JPH0724896B2 - Press machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pressing device, and more specifically, a stationary lower part having a lower forming tool and an upper movable part having an upper forming tool and vertically movable with respect to the stationary lower part. Related to press equipment.

<Prior Art> Conventionally, a press device having a stationary lower part having a lower forming tool and a movable upper part having an upper forming tool and vertically moved with respect to the stationary lower part has been put into practical use. In such a pressing device, the stationary lower part is provided with a frame body. The frame body includes a bottom frame, a pair of side frames that extend upward from the bottom frame at a distance in the left-right direction, and an upper frame that connects upper ends of the side frames to each other. And a space surrounded by each of the side frames and the upper frame. Since the crankshaft for vertically moving the movable upper part is rotatably supported by the pair of side frames, the part of the crankshaft between the side frames is positioned in the space of the frame body. The movable top includes a single upper crosshead. A pair of crank portions is provided at both ends of the portion of the crankshaft between the side frames. Then, in the processing region existing between the stationary lower part and the movable upper part, the material to be processed is processed by the cooperation of the lower forming tool and the upper forming tool.

In the conventional press machine as described above, there are the following problems in relation to the discharging device mounted to discharge the workpiece processed in the processing area.

That is, in order to discharge the workpiece processed in the processing area, in the conventional pressing device, a special chute is provided on the upper frame. The chute is arranged so as to extend obliquely downward from the upper frame to the outside of the device through the space of the frame body.

(1) By providing such a chute on the upper frame, the shape of the upper frame must be changed, and as a result, the strength of the upper frame and the strength of the frame body are reduced.

(2) Further, since the workpiece is allowed to freely fall through the inclined portion of the chute, the workpiece is hard to fall and sometimes stays in the middle. In order to remove the accumulated work pieces, the equipment must be stopped, which reduces the operation rate. When the chute has a duct shape, it is difficult to remove the accumulated work piece.

(3) Since the chute is arranged in a narrow space, the structure of the device becomes complicated.

(4) On the other hand, when the chute is gutter-shaped, it is relatively easy to remove the accumulated work, but since the chute is not closed, scraps or dust such as cutting chips scatter in the space of the frame body. Then, the drive system such as the crank shaft arranged in the space is damaged.

A device for discharging a work piece, scrap, or the like by arranging a conveyor such as a belt conveyor or a movable pedestal below the pressing device is, for example, Jikken Sho-
1864, JP-B-49-15345, JP-B-60-182, and the like.

(5) However, in these devices, the processed material, scrap, or the like is dropped directly onto a conveyor such as a belt conveyor, so that the processed material, scrap, or the like may be scattered around. Further, in a device for directly dropping a processed product or the like onto the belt conveyor, the belt conveyor will be damaged. Further, it is necessary to arrange a container for accommodating them at the end of the transfer device and drop the processed material, scrap or the like dropped on the transfer device into the container.

Further, as disclosed in Japanese Utility Model Publication No. 60-182, in the case where the belt conveyor is configured to pass under the lower press die, a channel-shaped groove extending from one end to the other end is formed below the lower press die. However, it is necessary to design the shape of the lower press die to a special specification, which reduces the strength (this is the same as the problem of (1) above).

On the other hand, in the above-mentioned conventional pressing device, there are the following problems with the balancer mounted on the crankshaft.

That is, in order to balance the crankshaft, in the conventional press device, a pair of balancers is mounted on the outer side of each of the pair of cranks provided on the crankshaft in the axial direction via another crank. (There are two balancers in total).

(A) Due to the existence of two balancers, it is necessary to balance both balancers. That is, if the mounting position is deviated due to the difference in the distance from the central portion of the crankshaft in the axial direction between the crank portions to each balancer, and the weight of each balancer is different, imbalance occurs between both balancers, New vibration occurs on the crankshaft. Especially, the rotation of the crankshaft is, for example, 1800 rpm to 2000 rpm
When the speed is high, the vibration becomes remarkable, which causes problems such as generation of noise, deterioration of durability of each part, deterioration of processing accuracy, and the like. Therefore, when mounting each balancer, particularly strict precision is required in processing, weight, assembly, etc., and the cost becomes high, and it is extremely difficult to maintain high precision for a long period of time. Therefore, it is practically impossible to prevent the generation of the new vibration, and the vibration of the entire apparatus becomes large. as a result,
It is not possible to sufficiently cope with the speeding up of the rotation of the crankshaft, and hence the speeding up of machining.

(B) In some cases, the distances from the central portion of the crankshaft in the axial direction between the crank portions to the balancers cannot be set equal in advance due to the layout. That is, the distance from the central portion of the crankshaft to each balancer is unbalanced in the axial direction. As a result, the crankshaft twists,
Since imbalance will occur in bending etc.,
New vibration occurs on the crankshaft. Therefore, similarly to the above, problems such as generation of noise, deterioration of durability of each part, deterioration of processing accuracy, and the like occur, and vibration of the entire apparatus increases. As a result, it is not possible to sufficiently cope with the speeding up of the rotation of the crankshaft and hence the speeding up of the machining.

(C) By providing two balancers, a space in the axial direction is required, the size of the entire apparatus becomes large and the configuration becomes complicated.

(D) The crankshaft becomes long due to the fact that the balancers are provided on the outer side of the crankshaft in the axial direction of the respective crank portions. Therefore, it is necessary to increase the rigidity of the crankshaft. This adds weight and costs.

<Objects of the Invention> The present invention has been made in view of the above facts, and a first object of the present invention is to easily and surely process a workpiece without lowering the strength of the frame and further improving the efficiency of the process. It is an object of the invention to provide an improved pressing device that can be discharged from the area.

The second object of the present invention is to make the device compact,
It is an object of the present invention to provide an improved press device capable of reliably reducing the vibration of the crankshaft and achieving high-speed processing.

<Summary of the Invention> In order to achieve the first object of the present invention, according to the present invention, a stationary lower part having a lower forming tool, and a movable part having an upper forming tool and moved up and down with respect to the stationary lower part. An upper part, and the stationary lower part includes a bottom frame, a pair of side frames extending upward from the bottom frame with a gap in the left-right direction, and an upper frame connecting between upper ends of the side frames. And a lower molding tool provided above the upper frame, and the frame body has a space surrounded by the bottom frame, each of the side frames, and the upper frame. However, the crankshaft for vertically moving the movable upper part is rotatably supported by the pair of side frames, so that the portions of the crankshaft between the side frames are formed of the frame body. Position in the space In the pressing device for processing the material to be processed by the cooperative operation of the lower forming tool and the upper forming tool in the processing region existing between the stationary lower part and the movable upper part, the upper frame of the stationary lower part is A workpiece storage space is formed below the processing region, and the workpiece storage space includes a through hole formed in the upper frame so as to extend in the front-rear direction. A communication hole that communicates the processed region with the workpiece storage space is formed so that the processed product processed in the region is dropped to a receiving region in the workpiece storage space, which exists below the processing region. A container transport mechanism for transporting a workpiece receiving container in which the workpiece is stored is provided in association with the workpiece storage space, and the container transport mechanism passes the workpiece receiving container through the workpiece storage space. The front and rear The pressing device is configured to be conveyed from one side toward the other side, and the workpiece processed in the processing area is dropped into the workpiece receiving container conveyed to the receiving area. , Can be provided.

In order to achieve the second object of the present invention, according to the present invention, a stationary lower part having a lower forming tool, and a movable upper part having an upper forming tool and moved up and down with respect to the stationary lower part, The stationary lower portion is a frame body including a bottom frame, a pair of side frames extending upward from the bottom frame with a space in the left-right direction, and an upper frame connecting upper ends of the side frames. The lower molding tool is provided above the upper frame, and the frame body has a space surrounded by the bottom frame, each of the side frames, and the upper frame, and the movable upper part. A crankshaft for vertically moving the crankshaft is rotatably supported by the pair of side frames, so that portions of the crankshaft between the side frames are positioned in the space of the frame body. And the movable top is A pair of crank portions are provided at both ends of a portion of the crankshaft between the side frames, the crankshaft including a single upper crosshead. In a press device for working a material to be worked by the cooperative operation of the lower forming tool and the upper forming tool, a pair of lower cross heads are arranged in relation to the crank shaft, and one lower end of the crank portion is The lower crosshead is connected to one of the lower crossheads via a connecting means, and the other lower end of the crank portion is connected to the other of the lower crossheads via a connecting means. Each of the lower crossheads has a connecting rod. Is connected to the upper crosshead through the crankshaft, and at the substantially central portion of the crankshaft between both ends supported by each of the side frames, another crank portion is provided.
Provided is a pressing device, which is equipped with two balancers.

<Preferred specific example of the invention> Hereinafter, one specific example of the pressing apparatus configured according to the present invention will be described with reference to the accompanying drawings.

1. Overall Configuration of Pressing Apparatus When the overall configuration of the illustrated pressing apparatus is outlined with reference to FIGS. 1 and 2, mainly FIG. 1, the illustrated pressing apparatus moves vertically with respect to a stationary lower portion 4 and a stationary lower portion 4. It comprises a press body 2 with a movable upper part 6 to be driven. The stationary lower portion 4 is a frame including a bottom frame 14, a pair of side frames extending upward from the bottom frame 14 at intervals in the left-right direction, and an upper frame 12 connecting upper ends of the side frames. It has a body 10. Reference numeral 8 indicates a lower frame, which includes a bottom frame 14 and a pair of side walls that extend upward from the bottom frame 14 at a distance in the left-right direction.
The bottom frame 14 and the pair of side walls are integrally provided.
The side wall 18a is provided on the upper end of the left side wall provided on the bottom frame 14.
Is fixed, and the side wall 18b is fixed to the upper end of the right side wall provided on the bottom frame 14. The left side wall and the side wall 18a of the bottom frame 14 and the right side wall and the side wall 18b of the bottom frame 14 constitute the pair of side frames.
Both ends of the upper frame 12 are fixed to the upper ends of the side walls 18a and 18b. A space surrounded by the bottom frame 14, the pair of side walls, and the upper frame 12 is formed in the frame body 10. Legs 16 are provided on the lower surface of the bottom frame 14, and the stationary lower portion 4 is installed on the floor (not shown) via the legs 16. A crankshaft 20 is rotatably mounted between the side walls 18a and 18b. One end side (the left end in FIG. 1) of the crankshaft 20 penetrates the side wall 18a and projects outward, and the drive gear 22 is fixed to the projecting portion. Although not shown, the drive gear 22 is drivingly connected to a main electric motor that constitutes a main drive source of the press machine through an appropriate transmission mechanism. Therefore, the crankshaft 20 is rotated in a predetermined direction by the action of the main electric motor (not shown). The other end side (the right end in FIG. 1) of the crankshaft 20 penetrates the side wall 18b and projects into the space defined by the lower frame 8, the side wall 18b and the auxiliary frame 24,
The flywheel 26 and the flywheel are attached to the protruding end.
A clutch 28 connected to 26 and a brake 30 connected to the auxiliary frame 24 are mounted. A pair of first crank portions 32 and 34 are provided on both sides at an intermediate portion of the crankshaft 20 (a portion existing between the side walls 18a and 18b of the frame body 10), and the pair of first crank portions 32 and Second between 34
The crank portion 36 of is provided. The pair of first crank portions 32 and 34 respectively include first connecting means 38 and 40.
Is connected to the lower crossheads 42 and 44 via. A balancer 48 is attached to the second crank portion 36 via a second connecting means 46. Furthermore, a pair of left and right parts of the upper frame 12 (left part in FIGS. 1 and 2) are spaced apart in the front-rear direction (direction perpendicular to the paper surface in FIG. 1, vertical direction in FIG. 2). Connecting rods 50 and 52 are mounted so as to be vertically slidable (Fig. 2). The connecting loads 50 and 52 extend in the vertical direction, the lower ends thereof are attached to one lower crosshead 42, and the upper end sides thereof are respectively supporting members 54 attached to the upper surface of the upper frame 12.
It penetrates through (only one is shown in FIG. 1) and projects upward. Also, the right portion of the upper frame 12 (see FIGS. 1 and 2)
A pair of connecting rods 56 and 58 are also mounted on the right part of the drawing at intervals in the front-rear direction so as to be slidable in the vertical direction (Fig. 2). , Their lower ends are attached to the other lower crosshead 44, and their upper ends pass upward through the support members 60 (only one is shown in FIG. 1) attached to the upper surface of the upper frame 12, respectively. It is protruding.

On the other hand, the movable upper part 6 has an upper crosshead 62. The upper crosshead 62 has a substantially rectangular shape, and its four corners are mounted on the projecting upper ends of the connecting rods 50, 52, 56 and 58 by nut members 64 (two are shown in FIG. 1) as required. There is.

A processing region P exists between the stationary lower portion 4 and the movable upper portion 6 described above, and required processing is performed in the processing region P. More specifically, the lower die set base 64 is mounted on the upper surface of the upper frame 12 of the stationary lower portion 4, and the lower die set 66 is mounted on the upper surface of the lower die set base 64. The lower forming tool 68 as described above is mounted. On the other hand, an upper die set base 70 is attached to the lower surface of the upper cross head 62 of the movable upper portion 6, an upper die set 72 is attached to the lower surface of the upper die set base 70, and the upper die set 72 has a punch-like shape. Upper forming tool (not shown)
Is installed. Further, in relation to the processing area P,
A material conveying means 74 for conveying the material to be processed through the processing area P is additionally provided. The material conveying means 74 is disposed on the right side of the press body 2 in FIG. 1 and intermittently conveys the material to be processed in the direction indicated by the arrow 76. The material conveying means 74, which may be in a form known per se, is used in the press body 2 during a processing period (a period in which the lower forming tool 68 of the stationary lower part 4 and the upper forming tool of the movable upper part 6 act on the material to be processed existing in the processing region P). ), The feeding of the work material is stopped, and the press body 2
Is a non-machining period (the upper forming tool of the movable upper part 6 is the machining area P
In a period in which the material to be processed existing above is separated from the material to be processed in the above), the material to be processed is advanced toward the processing region P by a predetermined amount.

Therefore, in the above-described pressing apparatus, for example, the sheet-shaped material to be processed is indicated by the arrow 76 by the action of the material conveying means 74.
It is conveyed toward the processing area P in the direction indicated by. On the other hand, in the press body 2, the lower crossheads 42 and 44 are moved up and down via the first connecting means 38 and 40 by the rotation of the crankshaft 20 in a predetermined direction, and via the second connecting means 46. Balancer 48 is moved up and down. The balancer 48 is
It moves up and down in the opposite direction to the lower crossheads 42 and 44, moves downward when the lower crossheads 42 and 44 move upward, and moves upward when the lower crossheads 42 and 44 move downward. To be done. When the lower crossheads 42 and 44 are moved upward, the upper crosshead 62 of the movable upper part 6 is moved upward via the connecting rods 50, 52, 56 and 58, and thus the lower forming tool 68 of the stationary lower part 4 is moved. Movable upper part 6
The upper forming tool (not shown) is moved upward. When the lower crossheads 42 and 44 are moved downward, the upper crossheads are connected via the connecting rods 50, 52, 56 and 58.
62 is moved downwards and thus the upper forming tool (not shown) of the movable upper part 6 is moved downward relative to the lower forming tool 68 of the stationary lower part 4. Therefore, by the above-mentioned vertical movement of the movable upper part 6 with respect to the stationary lower part 4, the machining time and the non-machining time are continuously repeated, and during the machining time (when the movable upper part 6 is in the position near the bottom dead center). Lower forming tool 68 of stationary lower part 4 and upper forming tool of movable upper part 6 (not shown)
Punching is performed on the material to be processed existing in the processing area P by the cooperation of the above, and the upper forming tool (not shown) of the movable upper part 6 is present in the processing area P in the non-processing time. It has no effect on the material.

Referring to FIG. 2 as well, in the illustrated pressing apparatus, the workpiece storage space S is further provided below the processing region P in correspondence therewith.
Is provided, and the workpiece processed by punching in the processing region P is dropped into the accommodation space S. In a specific example, the accommodation space S penetrates one side of the upper frame 12, that is, from the front side to the other side, that is, the rear side in the front-rear direction. A container transport mechanism 80 for transporting through the accommodation space S is additionally provided. Also arrow
A container supply mechanism 84 is disposed at the upstream end of the container transfer mechanism 80 when viewed in the receiving container transfer direction indicated by 82. The container supply mechanism 84 serves to supply the receiving container 78, in which the workpiece is not stored, to the upstream end of the container transport mechanism 80. Further, arrow 82
A container discharge holding mechanism 86 is disposed at the downstream end of the container transfer mechanism 80 when viewed in the receiving container transfer direction indicated by. The container discharge / holding mechanism 86 has a function of discharging the receiving container 78 containing the workpiece from the downstream end of the container transport mechanism 8 and holding it as required.

With this configuration, the receiving container 78 supplied by the operation of the container supply mechanism 84 is conveyed in the direction indicated by the arrow 82 by the operation of the container conveying mechanism 80, and is the workpiece receiving area below the processing area P. Hold in Q as required. While the receiving container 78 is held in the receiving area Q, a workpiece that has been punched as described above in the processing area P of the press body 2 is dropped into the receiving container 78 and received. To be When a predetermined number of workpieces are received in the receiving container 78 (in other words, the movable portion 6 of the press body 2 moves up and down a predetermined number of times), the receiving container 78 held in the receiving area Q is transferred to the container transport mechanism 80. By the action, it is again conveyed in the direction shown by the arrow 82, and is discharged and held in the container discharge holding mechanism 86 as described later.

Next, the configuration of each part of the press device configured as described above will be described in more detail.

Crankshaft and Related Elements With reference to FIGS. 3 and 4 together with FIG. 1, the crankshaft and related elements in the illustrated press machine will be described.

Mainly referring to FIG. 3, the crankshaft 20 rotated in a predetermined direction is rotatably mounted between the side walls 18a and 18b of the frame body 10 via bearing members 88 and 90. The crankshaft 20 is a round bar having a circular cross section in a specific example.
92 and three bush members 94, 96 and 98, the first crank portions 32 and 34 and the second crank portion 36 are mounted by mounting the bush members 94, 96 and 98 at predetermined positions on the round bar 92. It is configured. That is, as shown in an enlarged manner in FIG. 3, the bush member 94 is axially spaced at an intermediate portion of both end portions supported by the bearing members 88 and 90 of the round rod 92.
And 96 are fixed by locking members 100 and 102, and a bush member 98 is fixed by a locking member 104 between the portions of the intermediate portion where the bush members 94 and 96 are mounted. The bush members 94, 96 and 98 have eccentric circular cross-section portions 94a, 96a and 98a, respectively.
96 parts 94a and 96a are the first crank part of the crankshaft 20
32 and 34, and the portion 98a of the bush member 98 constitutes the second crank 36 of the crankshaft 20. As a specific example,
The second crank portion 36 described above, that is, the portion 98a of the bush member 98 is preferably disposed substantially axially in the center between both end portions of the crankshaft 20 supported by the bearing members 88 and 90, and The pair of first crank portions 32 and 34, that is, the portions 94a and 96a of the bush members 94 and 96 are preferably arranged axially symmetrically with respect to the second crank portion 36. In the specific example, the portion of the crankshaft 20 between the first crank portion 32 and the second crank portion 36 and the portion between the second crank portion 36 and the first crank portion 38 are respectively bearing members. It is rotatably supported by hanging parts 12a and 12b formed integrally with the upper frame 12 via 106 and 108.

As described above, the first crank portions 32 and 34 are connected to the lower cross head 42 through the first connecting means 38 and 40.
And 44. One of the first connecting means 38 and its related elements and the first connecting means 40 and its related elements have substantially the same structure, and one of them will be described next. The first connecting means 38 (or 40) comprises a connecting rod 110, a connecting screw 112 and a head mounting member 114. The connecting rod 110 has a rod portion 116, and the rod portion 116 is engraved with a female screw portion. Such connecting rod 110
Is rotatably mounted on the first crank portion 32 (or 34) of the crankshaft 20 via a bearing member 118. Also,
The connecting screw 112 is provided with a male screw portion on the outer peripheral surface on one end side and a ball portion 120 on the other end. The connecting screw 112 is connected to the connecting rod 110 by screwing the male screw portion of the connecting screw 112 with the female screw portion of the connecting rod 110. The other end of the connecting screw 112 is connected to the head mounting member 114. The head mounting member 114 has a ball receiving portion formed on the upper surface, and a male screw portion is engraved on the lower end portion thereof. The head mounting member 114 is configured such that the ball portion 120 of the connecting screw 112 is rotatably inserted into the receiving portion, and the locking member 122 that locks the ball portion 120 is attached to the opening portion of the receiving portion. The upper end is connected to the other end of the connecting screw 112, that is, the lower end. On the other hand, the lower crosshead 42 (or 44) is composed of an elongated, substantially rectangular parallelepiped block, a through hole 124 is formed in the central portion in the longitudinal direction thereof, and a female screw portion is engraved in the lower portion of the through hole 124. . And such a lower crosshead
By screwing the male thread portion of the head mounting member 114 into the female thread portion of 42 (or 44), the lower crosshead 42 (or 4
4) is attached to the head mounting member 114. As described above, the lower ends of the connecting rods 50 and 52 (or 56 and 58) are attached to both ends of the lower crosshead 42 (or 44) in the longitudinal direction. In the specific example, the lock nut 126 is screwed to the lower protrusion that protrudes downward from the lower crosshead 42 (or 44) of the head mounting member 114.

The balancer 48 is attached to the second crank portion 36 via the second connecting means 46 as described above. Second
The connecting means 46 includes a connecting rod 128, which is connected to the crankshaft through a bearing member 130.
It is rotatably mounted on the second crank portion 36 of 20.
The connecting rod 128 has a rod portion 132, and a pin member 134 is press-fitted at the tip of the rod portion 132.
On the other hand, the balancer 48 has a substantially rectangular parallelepiped-shaped balancer body 136, and the balancer body 136 is integrally provided with projections 138 and 140. Then, the protrusions 138 and 140 of the balancer 48 are rotatably attached to both ends of the pin member 134 fixed to the connecting rod 128 via bearing members 142 and 144. In the specific example, the balancer body 136
Are configured to be guided in the vertical direction by the parts 146 and 148 of the lower frame 8. Further, the portion 94a of the bush members 94 and 96 that form the first crank portions 32 and 34.
And 96a and the bush member 9 forming the second crank portion 36.
As is easily understood from FIG. 3, the portion 98a of 8 is eccentric in the substantially opposite direction, and the first connecting means
38 and 40 connecting rod 110 and second connecting means 4
The connecting rod 128 of 6 is moved substantially in the opposite direction.

With such a configuration, when the crankshaft 20 is rotated in a predetermined direction, the connecting rod 110 of the first connecting means 38 and 40 is moved up and down by the action of the first crank portions 32 and 34. , Thereby connecting the lower crosshead through the connecting screw 112 and the head mounting member 114.
42 and 44 are moved up and down. This way, the continuous rod 50,5
2, 56 and 58 are moved up and down, and thus the movable upper part 6, in other words, the upper cross head 62 and the upper forming tool (not shown) mounted on the movable upper part 6 are moved up and down in accordance with the rotation of the crankshaft 20. To be done. At this time, the second crank part
By the action of 36, the connecting rod 120 of the second connecting means 46 is moved up and down, whereby the balancer 48 is also moved up and down while being guided by the parts 146 and 148 of the lower frame 8. The balancer 48 has the lower crosshead 42 as described above.
Since the movable parts 6 and 44 are moved in the opposite direction, the balancer 48 moves downward when the movable upper part 6 moves upward, and the balancer 48 moves upward when the movable upper part moves downward.

In the pressing device described above, the stationary lower part and the movable upper part 6
To adjust the distance between the lower forming tool 68 of the stationary lower part 4 and the upper forming tool (not shown) of the movable upper part 6 in the top dead center position.
Position adjustment mechanism 1 in relation to head mounting members 114 of 38 and 40
50 are arranged. Referring to FIG. 4 together with FIG. 3,
The illustrated position adjusting mechanism 150 is a connection for driving and connecting the pair of rotation adjusting means 153 and 154 arranged in association with the head mounting member 114 of the first connecting means 38 and 40 and the rotation adjusting means 152 and 154. Including means 156. Rotation adjusting means 152 and
154 has substantially the same structure, and one rotation adjusting means 152 provided in association with the head mounting member 114 of the one first connecting means 38 will be described next. The illustrated rotation adjusting means 152 (or 154) includes a rotating member 158 having a shaft portion and a flange portion provided at one end of the shaft portion. The shaft of the rotating member 158 is rotatably supported by a supporting member 162 mounted on a fixed member 160 fixed to the upper surface of the bottom frame 14 of the lower frame 8 via a bearing member 164. An annular member 166 is fixed to the flange portion of the rotating member 158, and a worm wheel 168 is fixed to the outer peripheral surface of the annular member 166. On the inner peripheral surface of the annular member 166, a pair of recesses 170 are formed at opposing portions. On the other hand, the first
At the lower end of the head mounting member 114 of the connecting means 38 (or 40) of FIG.
Rollers 174 are rotatably mounted on both ends of the head mounting member 114. Then, the head mounting member 11
The rollers 17 mounted on the four are respectively received in the recesses 170 formed in the member 166 so as to be vertically movable. In the specific example, the roller 174 with respect to the annular member 166, and thus the head mounting member 114, is allowed to move up and down. In order to reliably prevent the head mounting member 114 from rotating in the clockwise direction or the counterclockwise direction relative to the annular member 166), the rollers 174 corresponding to the respective recesses 170 of the annular member 166 are prevented. A member 176 having a U-shaped cross section is interposed therebetween.

Further, the connecting means 156 shown in the figure is the rotation adjusting means 152 and 154.
A rod member 178 extending therethrough is provided. Rod member 178
In the specific example, the rotation adjusting means 15 has one end on one side.
2 is rotatably supported by the support portions 182a and 182b of the support member 180 fixed to the upper surface of the bottom frame 14 of the lower frame 8, and the other end side is close to the other rotation adjusting means 154 and the lower frame 8 Of the support member 184, which is fixed to the upper surface of the bottom frame 14 of the lower frame 8, is rotatably supported by the support portions 186a and 186b of the support member 184, and the middle portion of the support portion 188 of the support member 188 fixed to the upper surface of the bottom frame 14 of the lower frame 8. It is rotatably supported by. A worm 192 is fixed to a portion between the portions of the rod member 178 supported by the support portions 182a and 182b,
The worm 192 is meshed with the worm wheel 168 of the rotation adjusting means 152. Also, the support portion of the rod member 178
The worm 194 is also fixed to a portion between the portions supported by 186a and 186b, and the worm 194 is meshed with the worm wheel 168 of the rotation adjusting means 154. The other end of the rod member 178 projects outward from the support portion 186b of the support member 184, and the gear 196 is fixed to the projecting end. Although not shown, the gear 196 is drivingly connected to an electric motor capable of rotating in the forward and reverse directions through an appropriate transmission means.

As described above, when the electric motor (not shown) is rotated in the predetermined direction (or the direction opposite to the predetermined direction), the worms 192 and 194 move in the same direction via the gear 196 and the rod member 178. The worm wheel 168 of the rotation adjusting means 152 and 154 is rotated by the arrow 198 (or 2) in FIG.
00) Rotate in the direction shown. Thus, the rotation adjusting means
In 152 and 154, the annular member 166 is also rotated integrally, and the recess 170 of the annular member 166 is inserted through the member 176 into the pin member 1.
The head mounting member 114 is also rotated integrally with the annular member 166 in the direction indicated by the arrow 198 (or 200) by acting on the roller 174 mounted on the 72. Head mounting member of one of the first connecting means 38
When 114 is rotated in the direction indicated by arrow 198 (or 200),
The lower crosshead 42 and the lock nut 126 are attached to the head mounting member 1.
When the head attachment agent 114 of the other first connecting means 40 is rotated in the direction indicated by the arrow 198 (or 200), the lower cross is moved relative to the lower part 14 (or the upper part). The head 44 and the lock nut 126 are attached to the head mounting member 114.
It is moved downward (or upward) relative to. Therefore, the rotation adjusting means 152 via the drive connecting means 156.
When the worm wheels 168 of 154 and 154 are rotated in the direction shown by the arrow 198 (or 200), the lower crossheads 42 and 44 are simultaneously moved downward (or upward), and the connected lots 50, 52, 56 are moved.
The upper crosshead 62 is also moved downwards (or upwards) via the and 58, and thus the distance between the stationary lower part 4 and the movable upper part 6, in other words, the lower forming tool 68 of the stationary lower part 4 and its movable position at the top dead center position. The spacing of the top forming tools (not shown) on the top 6 is adjusted as desired.

Since the illustrated press device has the above-described configuration,
It has the following advantages.

First, the crankshaft 20 is composed of a round bar 92 and bush members 94, 96 and 98 attached to the round bar 92, and the first crank parts 32 and 34 and the second crank part 36 are the bush members 94.
Parts 96a and 96a and parts 98a of the bush member 98.
Since it is composed of a, compared to the conventional crankshaft with which the crank part is integrally provided, the crankshaft 20 can be machined more easily and its accuracy can be increased, which corresponds to the speeding up of machining. can do.

Secondly, since the balancer 48 is mounted in the central portion of the crankshaft 20, more specifically, substantially in the central portion in the axial direction between the portions of the crankshaft 20 supported by the press body 2, the entire press device is downsized. It is also possible to cope with speeding up. That is, in the conventional press machine, the balancers are arranged at both ends of the crankshaft, so that the space for the balancer becomes large and the entire machine becomes large, and the rigidity of the crankshaft also needs to be increased. In addition, it is necessary to balance the two due to the presence of two balancers, and it is not possible to satisfactorily deal with high-speed machining. On the other hand, in the illustrated press device, since the balancer 48 is mounted substantially in the center of the crankshaft 20, the space existing in the press device is effectively used to effectively downsize the entire device. The balancer 48 can be installed in the center of the press body 2 in the width direction.
Can be positioned, the vibration of the device can be effectively suppressed, and the processing speed can be increased, and the above-mentioned drawbacks existing in the related art can be eliminated.

Container Transport Mechanism and Related Elements Next, the configuration of the container transport mechanism 80 and related elements will be described with reference to FIGS. 5 and 7 together with FIG. 1 and FIG.

First, referring to FIGS. 1 and 2, in the illustrated press device, as described above, the workpiece storage space S is provided below the processing region P in correspondence with the processing region P. The workpiece storage space S is composed of a through hole 13 formed in a substantially central portion of the upper frame 12 so as to extend in the front-rear direction. The through hole 13 includes an upper end wall of the frame 12, hanging parts 12a and 12b formed integrally with the upper end wall, and a bottom wall 12c formed integrally with the hanging parts 12a and 12b so as to connect the hanging parts 12a and 12b. It is formed in an enclosed (partitioned) form. Therefore, the accommodation space S is the space formed in the frame body 10 (within the space thereof, the crankshaft 20 and the first connecting means).
38 and 40, lower crossheads 42 and 44, second connecting means 4
6, the balancer 48, the position adjusting mechanism 150, etc. are housed) and are provided so as to exist as (spaced) independent from. The accommodation space S is communicated with the processing area P, and the workpiece processed in the processing area P is dropped into the accommodation space S by its own weight. That is, in the specific example, through holes are formed in the upper part of the lower forming tool 68, the lower die set 66, the lower die set base 64, and the upper frame 12, respectively. 20
Specify 2.

The illustrated container transport mechanism 80 is attached in association with the accommodation space S described above. As shown in FIG. 2, the container transport mechanism 80 is disposed in the accommodation space S, and one side thereof, that is, the upstream side in the receiving container transport direction indicated by the arrow 82, projects forward from the front surface of the press body 2, The side, that is, the downstream side when viewed in the receiving container transport direction indicated by the arrow 82, projects rearward from the rear surface of the press body 2. The container transport mechanism 80 includes a pair of guide plates 204 that penetrate the accommodation space S and extend in the front-rear direction.
And 206. The guide plates 204 and 206 are laterally (at left and right in FIGS. 1 and 2) spaced apart from each other, and the inner surfaces of the guide plates 204 and 206 are provided with a plurality of support rollers that constitute container supporting means. 208 is arrow 82
They are mounted at intervals in the receiving container transport direction indicated by. Each of the plurality of support rollers 208 is rotatably mounted via a support shaft 210. A container supply region R exists at the upstream end of the container transport mechanism 80, and in the container supply region R, the support plate 212 is fixed to the inner surfaces of the guide plates 204 and 206. In addition, the container transport mechanism 8
A container discharge area T exists on the downstream end side of 0, and in this container discharge area T, a support plate 214 is fixed to the inner surfaces of the guide plates 204 and 206. The illustrated container transport mechanism 80 further includes a container moving means for moving the receiving container 78. The container moving means includes a pair of rotating members 216 and 218 and a winding transmission member 220 wound between the rotating members 216 and 218. The rotating members 216 and 218, which can be composed of, for example, sprockets, are arranged such that one of them (the rotating member 216) is rotatably disposed outward of one end of the guide plates 204 and 206, that is, in the front-rear direction, and the other ( A rotating member 218) is rotatably arranged outside the other ends of the guide plates 204 and 206, that is, rearward and rearward.
The rotating member 218 is drivingly connected to the electric motor M via an appropriate transmission means (not shown), and is rotated in the direction shown by an arrow 222 (FIG. 2) by the action of the electric motor M. Further, the winding transmission member 220, which may be formed of, for example, a chain, is wound between the rotating members 216 and 218, the pulling side 220a is located between the guide plates 204 and 206, and the loose side 220b is the guide plate. It is located outside of 204. A plurality of action pieces 224 are mounted on the winding transmission member 220 at a predetermined interval. In the concrete example, as can be easily understood from FIG. 2, the winding transmission member 220 and the winding transmission member 220 are attached to the end plates 226 and 228 fixed between both ends of the guide plates 204 and 206. A notch is formed so that the operating piece 224 can pass therethrough.

On the other hand, the workpiece container 78 in which the workpiece is housed is the second container.
As shown in FIGS. 6, 6 and 9, it has a box shape with an open top surface. And in a specific example, such a receiving container
The 78 is configured to be transported while being placed on the support table 230. That is, the support base 230 has a rectangular support plate 232, and four side edges of the support plate 232 are provided with protrusions 234 protruding upward. Also support plate 232
Support projections 236 are provided at intervals on the upper surface of the receiving container 78, and the receiving container 78 is mounted on the support projections 236 of the support base 230 as required as shown in FIGS. 6 and 9. In such a mounted state, the lower portion of the receiving container 78 is received between the projections 234 of the support base 230 as required, and thus the receiving container 78 is supported by the support base.
Moved with 230.

Since it is as described above, referring to FIG.
When 8 is rotated in the direction indicated by arrow 222, the winding transmission member
The pull side 220a of 220 moves in the direction indicated by arrow 82, ie, upward in FIG. Thus, the winding transmission member 22
The operating piece 224 provided on the receiving container 78 (in the specific example, as shown in FIG.
Abutting on the container) and the movement of the action piece 224 in the direction of the arrow 82.
The receiving container 78 located above 2 is conveyed toward the workpiece receiving area Q, and further conveyed through the receiving area Q to the container discharge area T, and thus the support plate 214. During the transportation, the support base 230 is supported by the support rollers 208 and is moved while being guided by the guide plates 204 and 206.

The illustrated container transport mechanism 80 further includes container restraining means 238 for restraining the receiving container 78 in the receiving region Q in relation to the workpiece receiving region Q, and the receiving container 78 positioned above in the receiving region Q. Included is container locating means 240 for selectively locating the active position and the inactive position located below.
Mainly referring to FIGS. 5 and 6, the container restraining means 238 shown in the figure is a pair of upstream restraining pieces 242 disposed upstream of the receiving area Q when viewed in the receiving container conveying direction indicated by an arrow 82. And a pair of downstream side restraining pieces 244 disposed on the downstream side of the receiving area Q when viewed in the transport direction, and the upstream side restraining piece 242 is placed in the receiving area Q by the action of the upstream actuating mechanism 246. It is selectively positioned at a restraining position for restraining (position shown in FIGS. 5, 6 and 7-B) and a releasing position for releasing the restraint of the receiving container 78 (position shown in FIG. 7-A). Further, the downstream restraining piece 244 selects a restraining position (the position shown in FIG. 5) where the receiving container 78 is restrained in the receiving area Q by the action of the downstream actuating mechanism 248 and a releasing position where the restraint of the receiving container 78 is released. It is designed to be positioned. In the specific example, the pair of upstream restraining pieces 242 and the upstream actuating mechanism 2
46 and the pair of downstream side restraining pieces 244 and the downstream side operating mechanism 248 have substantially the same configuration. Next, the configurations of the upstream side restraining piece 242 and the upstream side operating mechanism 246 will be described. Referring to FIGS. 7-A and 7-B together with FIGS. 5 and 6, the illustrated upstream actuation mechanism 246 includes a pair of rotating shafts 250 and 252.
A pneumatic cylinder mechanism 254 that constitutes an operation source for rotating the rotary shafts 250 and 252 is provided. More specifically, the one rotary shaft 250 is disposed inside the guide plate 204 and is rotatably supported by a support member 256 fixed to a plate member 255 mounted on the bottom surface defining the accommodation space S. . The other rotating shaft 252 is disposed inside the guide plate 206, and is rotatably supported by a supporting member 258 fixed to a plate member 255 mounted on the bottom surface defining the accommodation space S. One end sides of the rotary shafts 250 and 252 project somewhat forward from the front surface of the accommodation space S, and these projecting ends are rotatably supported by the plate member 260. The plate member 260 is fixed to the mounting member 262,
Is attached to a part 264 of the container transport mechanism 80. A connecting piece is attached to the protruding end of the rotary shaft 250 protruding from the plate member 260.
One end of the connecting piece 266 is fixed, and the other end of the connecting piece 266 is connected with the connecting bolt 26.
It is pivotally connected to one end of a connecting member 270 via 8. The other end of the connecting member 270 is further provided with a pin member 272.
It is rotatably connected to the U-shaped connecting member 274 via. Similar to the rotating shaft 250 described above, one end of the connecting piece 276 is also fixed to the protruding end of the rotating shaft 252 protruding from the plate member 260, and the other end of the connecting piece 276 is one end of the connecting member 280 via the connecting bolt 278. It is connected to the part so that it can rotate, and this connecting member 2
The other end of 80 is pivotally connected to the connecting member 274 via the pin member 272. On the other hand, the pneumatic cylinder mechanism 254
Is attached to a mounting member 262, and its output rod 254a is screwed to the connecting member 274 through a through hole (not shown) formed in the mounting member 262. A guide roller 282 is rotatably attached to the pin member 272 attached to the connecting member 274, and the guide roller 282 is vertically movable in a vertically extending elongated hole 284 formed in the plate member 260. It is accepted. Then, the rotary shaft 250 of the actuating mechanism 246 described above.
Upstream side restraining pieces 242 are fixed to the other end sides of 252 and 252, respectively.

As such, when the pneumatic cylinder mechanism 254 is contracted, the guide roller 282 is connected via the connecting member 274, as will be readily understood by comparing FIGS. 7-A and 7-B. Are moved downward in the slot 284. Thus, the other ends of the connecting members 270 and 280 are also moved downward with the movement of the connecting member 274, whereby the connecting piece 266 is swung in the counterclockwise direction shown by the arrow 286 (Fig. 7-A). At the same time, the connecting piece 276 is turned clockwise as indicated by arrow 288 (FIG. 7-A). When the connecting piece 266 is swung in this way, the rotary shaft 250 is also swung integrally in the direction indicated by the arrow 286, and the connecting piece 27
When the 6 is turned like this, the rotary shaft 252 and the arrow 288 are integrated with this.
Swivel in the direction indicated by, and thus the pneumatic cylinder mechanism 252
Contracting causes one upstream restraint piece 242 to swivel in the direction shown by arrow 286 and the other upstream restraint piece 242 to swivel in the direction shown by arrow 288. Then, when the pneumatic cylinder mechanism 254 is contracted by a predetermined amount, the guide roller 282 is positioned at the lower end of the elongated hole 284, and the state shown in FIGS. 6 and 7-B is obtained.
That is, the rotary shaft 250 is moved through the connecting member 270 and the connecting piece 266 by a predetermined amount (in the specific example, in a counterclockwise direction in FIG. 7A).
The rotary shaft 252 is rotated by a predetermined amount (approximately 90 degrees clockwise in FIG. 7A in the specific example) via the connecting member 280 and the connecting piece 276, and the upstream side restraining piece 242 is rotated. Are positioned in a substantially upright restrained position. In such a restraining position, as shown in FIGS. 6 and 7-B, the upper end side of the upstream restraining piece 242 is the bottom surface of the receiving container 78 (the supporting table 230 on which the receiving container 78 is placed in the specific example). The protrusion of the receiving container 78 in the direction opposite to the direction indicated by the arrow 82 is reliably prevented by the action of the upstream side restraining piece 242. On the other hand, when the pneumatic cylinder mechanism 254 is extended, the guide roller 282 is extended through the connecting member 274 to form the elongated hole 284.
The inside can be moved upwards. Thus, contrary to the above, the connection member 270 and the connection member 270 are moved along with the movement of the connection member 272.
The other end of 280 is moved upward, which causes the connecting piece 266
Is turned clockwise as indicated by arrow 290 (FIG. 7-B), and connecting piece 276 is turned counterclockwise as indicated by arrow 292 (FIG. 7-B). When the connecting piece 266 is swung, the rotary shaft 250 is also swung in the direction indicated by an arrow 290 integrally with this, and when the connecting piece 276 is swiveled, the rotary shaft 252 is integrally turned with this.
Is also swung in the direction indicated by the arrow 292, and thus the extension of the pneumatic cylinder mechanism 252 causes one of the upstream restraining pieces 242 to move in the arrow direction.
In the direction indicated by 290, the other upstream side restraint piece 242 is indicated by the arrow 29.
It turns in the direction indicated by 2. And pneumatic cylinder mechanism 2
When 54 is extended by a predetermined amount, the guide roller 282
It is located at the upper end of the inside and is in the state shown in FIG. 7-A. That is, the rotary shaft 250 is rotated about 90 degrees clockwise in FIG. 7-B through the connecting member 270 and the connecting piece 266, and the rotating shaft 252 is rotated through the connecting member 280 and the connecting piece 276 in the seventh direction. B
In the figure, it is rotated approximately 90 degrees counterclockwise and the upstream restraint
242 is positioned in a release position that is substantially horizontal. In this release position, as shown in FIG. 7-A, the upstream restraint piece 242 is located below the upper end of the support roller 208 and does not act on the receiving container 78 (support stand 230 in the specific example). Thus, the above-mentioned restraint of the receiving container 78 is released, and the receiving container 78 becomes movable on the support roller 208.

The downstream actuation mechanism 248 has substantially the same configuration as the upstream actuation mechanism 246 as described above, and includes a pair of rotary shafts 250 and
252 and a pneumatic cylinder mechanism (not shown) that constitutes an operation source for rotating the rotary shafts 250 and 252, and downstream restraining pieces 244 are fixed to the rotary shafts 250 and 252, respectively. Therefore, similar to the operation of the upstream side operating mechanism 246, when the pneumatic cylinder mechanism (not shown) of the downstream side operating mechanism 248 is contracted, the contraction of the pneumatic cylinder mechanism causes the rotating shaft 250 and 252 is rotated as predetermined, the downstream restraint piece 244 is positioned in a substantially upright restraint position,
On the other hand, when the pneumatic cylinder mechanism (not shown) is expanded, the expansion of the pneumatic cylinder mechanism causes the rotary shafts 250 and 252 to rotate as required in the same manner as described above, and the downstream side restraining piece
242 is positioned in a release position that is substantially horizontal.

The illustrated container positioning means 240 also includes a positioning member 294. 5, FIG. 6, FIG. 7-A and FIG. 7-B
Referring to the drawing, in the specific example, the positioning member 294 is 4
Each positioning member 294 has a tip end,
A roller 298 is rotatably attached via a short shaft 296.
These locating members 294 are attached in association with the upstream actuation mechanism 246, and the two locating members 294 are axially arranged at the other end of the rotary shaft 250 (a portion existing in the receiving area Q). The remaining two positioning members 294, which are fixed at intervals, are fixed to the other end of the other rotary shaft 252 (the portion existing in the receiving area Q) at intervals in the axial direction.
Therefore, as can be easily understood, the four positioning members 29
4 is operated by the action of the upstream actuation mechanism 246 (the fifth position
It is selectively positioned between the positions shown in FIGS. 6, 6 and 7-B) and the non-acting position (the position shown in FIG. 7-A).
That is, when the pneumatic cylinder mechanism 254 of the upstream actuation mechanism 246 is contracted as required, the rotary shaft 25 is moved as described above.
0 and 252 are rotated approximately 90 degrees as required, and each positioning member
294 is positioned in a substantially upright working position (at this time, the upstream restraining piece 242 is positioned in the restraining position). In this operating position, as shown in FIG. 7-B, the rollers 298 mounted on the positioning members 294 act on the bottom surface of the receiving container 78 (the bottom surface of the support base 230 in the specific example) existing in the receiving area Q. And move it upwards, and the receiving container 7
8 is held at the receiving position located above the support roller 208. On the other hand, when the pneumatic cylinder mechanism 254 is extended as required, the rotary shafts 250 and 252 are rotated by approximately 90 degrees as required as described above, and the positioning members 294 are substantially horizontal non-acting positions. (At this time, the upstream restraining piece 242 is positioned at the release position). In this non-acting position, as shown in FIG. 7-A, the bottom surface of the receiving container 78 in which the rollers 298 mounted on the respective positioning members 294 exist in the receiving area Q (in the specific example, the support base 230).
(The bottom surface of) and does not act on this bottom surface,
The cradle 78 is supported on the support roller 208. In the specific example, the positioning member 294 of the container positioning means 240 is moved by the upstream actuation mechanism 246 that moves the upstream restraint piece 242, but instead of this, a separate actuation mechanism is provided, and by this actuation mechanism. The locating member 294 may be selectively biased into the working position and the non-working position.

In the illustrated press device, further, in the lower part of the communication hole 202 that connects the processing area P and the accommodation space S, in the receiving area 78 existing in the receiving area Q, the workpiece processed in the processing area P is required. A guide member 300 for guiding the vehicle is arranged (FIG. 1). The guide member 300 is formed of a tubular member, and the lower end side of the guide member 300 projects from the lower surface of the communication hole 202 to the inside of the accommodation space S to some extent. In the specific example, the guide member 300 described above is preferably further configured as follows. That is, when the positioning member 294 is positioned at the working position and the receiving container 78 is held at the receiving position, the lower end of the guide member 300 is positioned at the receiving container 78.
Positioned inside (which ensures that the work piece processed in the processing area P is received in the receiving container 78) and the positioning member 294 is positioned in the non-acting position so that the receiving container 78 rests on the support roller 208. When supported, the lower end of the guide member 300 is located above the receiving container 78 (this ensures that the upper part of the receiving container 78 does not come into contact with the guide member 300 when moving). Is preferred.

Container Supply Mechanism Next, the illustrated container supply mechanism 84 will be described with reference to FIGS. 8 and 9 together with FIG.

The illustrated container supply mechanism 84 includes a moving table 302 and a container supply holding means 304 mounted on the moving table 302. In the specific example, two container holding means 304 are provided on the moving table 302, but if the number of workpiece receiving containers 78 to be supplied is reduced, a larger number may be provided. If it is good, one may be provided.

Mainly referring to FIG. 2 and FIG. 8, the container supply holding means 304 shown in the drawing has a guide plate 306 arranged at intervals.
And 308. The guide plates 306 and 308 are attached to the upper ends of the support members 310 and 312 and the side wall plate 314, respectively, and the support members 310 and 312 and the side wall plate 314 are installed.
The lower end of is attached to the moving table 302 (in FIG. 8, only the guide plate 306 and its related elements are shown). Therefore, in a specific example, as shown in FIG. 8, one end side (left end side in FIG. 8) of the guide plates 306 and 308 is supported by the moving table 302 via the side wall plate 314, and the other end side thereof ( The right end side in FIG. 8) is supported by the moving table 302 via the supporting member 310, and the intermediate portion thereof is supported by the moving table 302 via the supporting member 312. Rollers 316 and 318 are further provided at both ends of the above-mentioned guide plates 306 and 308, respectively.
An endless conveyor belt 320 is wound around 6 and 318. In the specific example, roller 316 includes guide plates 306 and 308.
The roller 318 is rotatably mounted on one end of the guide plate 306, and the roller 318 is rotatably mounted on the other end of the guide plate 306. The plate piece 322 is rotatably mounted on the other end of the guide plate 308. (Not shown) is rotatably mounted. The conveyor belt 320 is located between the guide plates 306 and 308, extends substantially horizontally from one end wound around the roller 318 toward the roller 316, and is wound around the roller 316. The roller 324 is rotatably mounted between the mounting members 326 (only one of which is shown in FIG. 8) and the roller 328 which is rotatably mounted between the mounting members 326 (only one of which is shown in FIG. 8). Above roller 318
It reaches the above-mentioned one end which is wrapped around. The roller 328 is drivingly connected to an electric motor 330 that constitutes a drive source, and
Is rotated in the direction indicated by the dashed arrow 332.
Therefore, the above-described transport belt 320 moves in the direction indicated by arrow 334 by the action of the electric motor 330, in other words, in the direction in which the upper traveling portion 320a moves from the other end side of the guide plates 306 and 308 toward one end side thereof. Be moved. Then, the plate pieces 32 attached to the guide plates 306 and 308
By changing the position of 2, the tension of the conveyor belt 320 is adjusted. In the specific example, the receiving container 78 is placed on the upper traveling portion 320a of the conveyor belt 320 and is conveyed as required by the movement of the conveyor belt 320 in the direction indicated by the arrow 334 (see FIG. 9). In relation to this, the support plate 336 is disposed below the upper traveling portion 320a of the conveyor belt 320. The support plate 336 extends substantially horizontally from one end to the other end of the guide plates 306 and 308 facing the upper traveling portion 320a, and
It is fixed between 306 and 308 and also fixed to the upper end of the inner wall plate 338.

The moving table 302 on which the container supply / holding means 304 is mounted is moved to the base 342 through the moving mechanism 340 in the front-back direction (vertical direction in FIG. 2, vertical direction in FIGS. 8 and 9). It is installed freely. The moving mechanism 340 includes a pair of rails 344 and 346 arranged at both ends of the base 342.
Is included. The rails 344 and 346 are fixed to the upper surfaces of the mounting plates 348 and 350 attached to both ends of the base 342, respectively, and extend in the front-back direction. On the other hand, mounting plates 352 and 354 are attached to both ends of the moving table 302, and U-shaped support brackets 356 and 358 are fixed to the lower surfaces of the mounting plates 352 and 354, respectively. Further, one support bracket 356 is rotatably mounted with rollers 360 having flange portions on both side edges, and the rollers 360 are supported by one rail 344 (specifically, a portion between both flange portions of the roller 360 is a rail. A cylindrical roller 362 is rotatably mounted on the other support bracket 358, and the roller 362 is supported on the other rail 346. Therefore, the movable table 302 is reliably moved in the front-rear direction along the rail 344 due to the fact that both flange portions of the rollers 360 are located on both sides of the rail 344 on one end side of the movable table 302. The moving mechanism 340 further includes a pneumatic cylinder mechanism 3 for moving the moving table 302.
Contains 64. The main body side of the pneumatic cylinder mechanism 364 is the base 3
It is attached to a mounting member 366 fixed to 42, and its rod side is connected to a moving rod 368. The moving rod 368 extends in the lateral direction, and pinions 370 and 372 are rotatably attached to both ends of the moving rod 368. One of the pinions 370 is a rack 374 fixed to a mounting plate 348 and a mounting plate.
The pinion 372 located between the racks 376 fixed to 352 and meshed with them is the rack 378 fixed to the mounting plate 250 and the rack 38 fixed to the mounting plate 354.
It is located between 0 and meshed with them. The rack 374
And 376 extend in the anteroposterior direction inside rail 344 substantially parallel to rail 344, and racks 378 and 380 include rails 378 and 380.
Inside the 346, it extends in the front-rear direction substantially parallel to the rail 346. In the specific example, further, L-shaped members 382 and 384 are fixed to the upper surfaces of the attachment members 348 and 350, and the attachment members 382 and 384 have restraining members 386 and 3 having protrusions.
88 is installed. Meanwhile, support brackets 356 and 358
Rollers 390 and 392 are rotatably mounted on the outer surface of one of the restraint members 386, the protrusions of which are located above the rollers 390, and the other restraint member 388 whose protrusions are located above the rollers 392. . Therefore, when the moving table 302 moves upward, the rollers 390 and 392 contact the protrusions of the restraining members 386 and 388,
Thus, upward movement of the moving table 302, in other words, the rollers 360 and 362 are reliably prevented from coming off the rails 344 and 346.

With this configuration, when the pneumatic cylinder mechanism 364 is extended, the moving rod 368 is moved toward the back side (upward in FIG. 2) in the direction perpendicular to the paper surface in FIG.
The container supply-holding means 304 is positioned at the position shown by the solid line in FIG. 2 (when positioned at such a position, the receiving container 78 is transferred from the container supply-holding means 304 located in the front-rear direction to the container 78 as understood from FIG. It is supplied to the supply area Q of the transport mechanism 80). During such movement, the pinions 370 and 372 move rearward and backward in the front-rear direction while rotating on the racks 374 and 378 fixed to the base 342.
Since the moving table 302 moves backward and forward in the front-rear direction, that is, upward in FIG. 2 by the rotation of the racks 372 and 372, the moving amount of the moving table 302 is twice the extension amount of the pneumatic cylinder mechanism 364. Becomes On the other hand, when the pneumatic cylinder mechanism 364 is contracted, the moving rod 368 is moved toward the surface (the downward direction in FIG. 2) perpendicular to the paper surface in FIG. 8, and the container supply holding means 304 is moved to the direction shown in FIG. It is positioned at the position indicated by the chain double-dashed line (when positioned at such a position, the receiving container 78 is transferred from the container supply / holding means 304 at the rear in the front-rear direction to the supply region Q of the container transport mechanism 80, as can be understood from FIG. During such movement, the pinions 370 and 372 move forward and backward on the racks 374 and 378 fixed to the base 342 while rotating, and the rotation of the pinions 370 and 372 causes the rack 37 to move.
Since the moving table 302 moves forward and backward in the front-rear direction, that is, downward in FIG.
The amount of movement of 2 is twice the amount of contraction of the pneumatic cylinder mechanism 364.

Mainly referring to FIG. 9, the container supply holding means 304
Each of them is provided with a first movement prevention means 394, a second movement prevention means 396, and a forced movement means 398 (in FIG. 9, container supply holding means located forward in the front-rear direction).
Show only those attached to 304). The first movement preventing means 394 is disposed on one end side of the guide plates 306 and 308, and is located at the downstream end of the conveyor belt 320 in the receiving container supply direction (the receiving container 78 located at the left end in FIG. 2). ) Acts to prevent the movement of. The illustrated first movement preventing means 394 is a pair of pneumatic cylinder mechanisms 400 attached to the end wall plate 399 (only one of which is shown in FIG. 9).
Is included. Output rod 400 of each pneumatic cylinder mechanism 400
A connecting rod 402 is connected to a, and a blocking member 406 having a movement blocking portion 404 extending upward is attached to the connecting rod 402 (only one of them is shown in FIG. 9). One of the movement blocking portions 404 of the blocking member 406 is located between the guide plate 306 and the conveyor belt 320, and the other of them is located between the guide plate 308 and the conveyor belt 320. Therefore, when the pneumatic cylinder mechanism 400 is extended, the connecting rod 4
The blocking member 406 is moved upward via 02, and the blocking member 406
Is positioned at the working position shown by the solid line in FIG. 9 (at this working position, the upper end side of the movement blocking portion 404 projects somewhat above the upper surface of the upper traveling portion 320a of the transport belt 320), while When the pneumatic cylinder mechanism 400 is contracted,
The blocking member 406 is moved downward via the connecting rod 402,
The blocking member 406 is positioned at the non-acting position shown by the chain double-dashed line in FIG. 9 (in the non-acting position, the movement blocking part 404 is located below the upper traveling part 320a of the transport belt 320). Further, the second movement preventing means 396 is disposed on the upstream side of the first movement preventing means 394 in the receiving container supply direction, and the second movement preventing means 396 is located on the conveying belt 320 from the downstream end in the receiving container supply direction.
It acts to prevent the second receiving container 78 (the receiving container 78 located second from the left in FIG. 2) from moving. The illustrated second movement preventing means 396 includes a pair of pneumatic cylinder mechanisms 412 (only one of which is shown in FIG. 9) attached to a support plate 408 fixed to the inner wall plate 338. A blocking member 414 is attached to the output rod 412a of each pneumatic cylinder mechanism 412 (only one is shown in FIG. 9). Each blocking member 414 extends upward, one of which is located between the guide plate 306 and the conveyor belt 320 and the other of which is located between the guide plate 308 and the conveyor belt 320. Therefore, when the pneumatic cylinder mechanism 412 is extended, the blocking member 414 is moved upward, and the blocking member 414 moves to the ninth position.
The operating position shown by the solid line in the figure (at such operating position,
The upper end side of the blocking member 414 is the upper running portion 320a of the conveyor belt 320.
Projecting somewhat above the upper surface of the)),
On the other hand, when the pneumatic cylinder mechanism 412 is contracted, the blocking member 4
14 is moved downward, and the blocking member 414 is in the non-acting position shown by the chain double-dashed line in FIG. 9 (in the non-acting position, the blocking member 414 is located below the upper traveling portion 320a of the transport belt 320). Positioned. Further, the forced moving means 398 is
The receiving container 78 is disposed movably in the receiving container supply direction in relation to the receiving container 78 located on the downstream end of the conveying belt 320 in the receiving container supply direction, and the receiving container 78 is directed toward the supply region Q of the container transfer mechanism 80. It acts to forcibly move it. The illustrated forced moving means 398 includes a pneumatic cylinder mechanism 416 attached to the inner wall plate 338. Pneumatic cylinder mechanism 416
The output rod 416a penetrates through a through hole (not shown) formed in the inner wall plate 338 and projects, and a support member 418 is attached to the projecting end of the output rod 416a. The supporting member 418 is located between the pair of blocking members 414 of the second movement blocking means 396, and has a pair of pneumatic cylinder mechanisms 420 (the ninth block) on its upper surface.
(Only one side is shown in the drawing) is mounted, and the moving member 422 is mounted on the output rod 420a of the pneumatic cylinder mechanism 420. Each moving member 422 extends upward, one of them is located between the guide plate 306 and the conveyor belt 320, and the other of them is located between the guide plate 308 and the conveyor belt 420. In the specific example, the pair of moving members 422 of the forced moving means 398 are the pair of movement blocking portions of the first movement blocking means 394.
It is arranged inside the pair of blocking members 414 of 404 and the second movement blocking means 396. Therefore, the pneumatic cylinder mechanism 41
When 6 is extended, the support member 418 is moved in the receiving container supply direction, that is, to the left in FIG. 9, and the pair of pneumatic cylinder mechanisms 420 are positioned at the first position shown by the chain double-dashed line in FIG. On the other hand, when the pneumatic cylinder mechanism 416 is contracted,
The support member 418 is moved in the direction opposite to the receiving container supply direction, that is, to the right in FIG. 9, and the pair of pneumatic cylinder mechanisms is moved.
The 420 is positioned in the second position shown by the solid line in FIG. Further, when the pneumatic cylinder mechanism 420 is expanded, the moving member 422 is moved upward, and the moving member 422 is shown by a solid line in FIG. 9 (more specifically, the pneumatic cylinder mechanism 420 is the second
Is indicated by a solid line in the state of the above position, and is also indicated by a chain double-dashed line in the state of the above-mentioned first position). Of the moving member 422 is moved downward, and the pneumatic cylinder mechanism 42 is contracted, the moving member 422 is moved downward,
The moving member 422 is shown by a chain double-dashed line in FIG. 9 (more specifically, it is shown by a chain double-dashed line when the pneumatic cylinder mechanism 420 is in the second position). The moving member 422 is positioned below the upper traveling portion 320a of the conveyor belt 320).

In relation to the first movement preventing means 394, the second movement preventing means 396, and the forced movement means 398, the support table 230 on which the receiving container 78 is placed is configured as follows. Referring to FIG. 9, in the lower portion of the front end of the support table 230 in the receiving container conveying direction, the width direction of the support table 230 (the direction perpendicular to the paper surface in FIG. 9).
Four notches 424 (one shown in FIG. 9) are formed at intervals in the space, and four notches 424 are also provided at the lower part of the rear end of the support table 230 in the receiving container transport direction at intervals in the width direction. Cutout
426 (one shown in FIG. 9) is formed. A pair of outer notches 424 formed in the front end of the support base 230.
(One of them is shown in FIG. 9) is provided at a portion corresponding to the movement blocking portion 404 of the first movement blocking means 394 and the blocking member 414 of the first movement blocking means 396, and the rear end of the support base 230. A pair of inner notches 426 (one of which is shown in FIG. 9) formed in the moving member 4 of the forced moving means 398.
It is provided in the part corresponding to 22. Therefore, as shown in FIG. 9, when the first movement preventing means 394 is in the operating position, the pair of movement preventing portions 404 of the preventing member 406 forms a pair of outside outer portions formed in the lower portion of the front end of the support base 230. Cutout 4
It becomes possible to contact the bottom portion of 24, and the movement blocking portion 404 comes into contact with the notch 424, whereby the movement of the support base 230, and thus the receiving container 78, is reliably stopped. On the other hand, when the first movement prevention unit 394 is in the non-acting position, the pair of movement prevention units 404 retracts below the support plate 232 of the support base 230, and the support base 230 on the transport belt 320, and thus the support base 230. It does not act on the container 78. Further, when the second movement blocking means 396 is in the above-mentioned operating position, the pair of blocking members 4
14 can contact the bottom of the pair of outer cutouts 424 formed in the lower part of the front end of the support base 230, and the blocking member 414 contacts the cutout 424 to support the support base 23.
0, therefore the movement of the receiving container 78 is reliably stopped. On the other hand, when the second movement blocking means 396 is in the non-acting position, the pair of blocking members 414 retracts below the support plate 232 of the support base 230, and the support base 23 on the conveyor belt 320.
0, and therefore does not act on the receiving container 78. Further, when the forced moving means 398 is moved to the working position while the receiving container 78 is stopped by the first movement preventing means 394, the pair of moving members 422 cause the pair of moving members 422 to move.
A pair of inner notches 426 formed in the lower part of the rear end of 30
The support pedestal 230, and thus the receiving container 78, is forcibly moved toward the supply region R of the container transfer mechanism 80 by the movement of the forced moving means 398, which will be described later, from the second position to the first position. Be moved. On the other hand, when the forced moving means 398 is in the non-acting position, the pair of moving members 422 retracts below the support plate 232 of the support 230 on the conveyor belt 320 and acts on the support 230, and thus the receiving container 78. There is no such thing. In the embodiment described above, the pair of outer notches 426 formed at the rear end of the support base 230 has the same shape as the pair of outer notches 424 formed at the front end thereof.
Of the movement blocking means 394 of the second movement blocking means 394 and the blocking member 414 of the second movement blocking means 396, and a pair of inner notches 4 formed at the front end of the support base 230.
24 is provided at a portion corresponding to the moving member 422 of the forced moving means 398, similarly to the inner partial cutout 426 formed at the rear end. Therefore, as is easily understood, even if the support base 230 is placed on the conveyor belt 320 with the front-back direction reversed, no inconvenience occurs.

In the concrete example, the receiving container 78 is forcibly moved toward the supply region R of the container transport mechanism 80 by providing the forcibly moving means 398, but the receiving container 78 is required by the action of the transport belt 320. As described above, the forced movement means 398 can be omitted if the movement can be reliably performed.

Container Discharge Holding Mechanism Next, the illustrated container discharge holding mechanism 86 will be described with reference to FIG. 2 and FIG. The illustrated container ejection holding mechanism
86 includes a moving table 430 and container holding means 432 mounted on the moving table 430. The container holding means 432 is preferably configured to hold all the receiving containers 78 supplied from the container supply mechanism 84 and discharged from the discharge area T through the receiving area Q, and corresponds to the container supply holding means 304 in a specific example. And two are provided. The illustrated container holding means 432 has guide plates 434 and 436 arranged at intervals. The bottom wall plate 438 is fixed between the guide plates 434 and 436, and both ends of the bottom wall plate 438 are attached to the moving table 430 via the support legs 440.
As shown in FIG. 10, the guide plates 434 and 436 are inclined downward from one end adjacent to the discharge area T of the container transport mechanism 80 toward the other end.
A plurality of support rollers 442 are rotatably mounted between 4 and 436 at intervals in the longitudinal direction. Further, a stop member 444 is arranged on the other end side of the guide plates 434 and 436, and the stop member 444 mounts its L-shaped mounting member 446 on the bottom wall plate 43.
It is attached by fixing it to 8. Therefore, as will be easily understood, when the receiving container 78 is discharged from the discharge area T to the container holding means 432, the receiving container 78 moves downward on the supporting roller 442 toward the stop member 444 by its own weight, By contacting the stop member 444, it is held on the support roller 442 as required.

The moving table 430, to which the container holding means 432 is attached, is attached to the base 450 via the moving mechanism 448 so as to be movable in the front-back direction (vertical direction in FIG. 2, vertical direction in FIG. 10). . The moving mechanism 448 for moving the moving table 430 is the moving table 302 (8th unit) of the container supply mechanism 84.
The configuration is substantially the same as the moving mechanism 340 for moving the drawing). That is, the moving mechanism 448 includes a pair of rails 452 and 454 arranged at both ends of the base 342, and rollers 460 and 462 rotatably attached to both ends of the moving table 430 via support brackets 456 and 458 ( In a specific example, one roller 460 is provided with flange portions on both side edges, and the roller 46
0 and 462 are supported by rails 452 and 454. The moving mechanism 448 further includes a pneumatic cylinder mechanism 464, and an output rod (not shown) of the pneumatic cylinder mechanism 464 is a moving rod 466.
Are linked to. Pinions 468 and 470 are rotatably attached to both ends of the moving rod 466, and a pinion 4698 and
470 is located between racks 472 and 474 fixed to the base 450 side and racks 476 and 478 fixed to the moving table 430 side, and meshed with both racks respectively. In the specific example,
In addition, the support brackets 456 and 458 have rollers 480 and 4 to ensure that the movable table 430 is prevented from moving upward.
82 is rotatably mounted, and correspondingly the base 450
High-speed members 484 and 486 having protrusions projecting above the rollers 480 and 482 are mounted on the shafts via L-shaped members 488 and 490. Therefore, the moving table 430 is mounted on the rail 4
It is surely moved back and forth along 52 and 454. When the pneumatic cylinder mechanism 464 is extended, the moving rod 4
66 is moved to the back side (upward in FIG. 2) in the direction perpendicular to the paper surface in FIG. 10, and the container discharge holding mechanism 86 is positioned at the position indicated by the chain double-dashed line in FIG. 2 (positioned at such position). Then, as can be understood from FIG. 2, the container 78 in the discharge area T is discharged toward the container holding means 432 in the front-rear direction). On the other hand, pneumatic cylinder mechanism 4
When 64 is contracted, the moving rod 466 is moved toward the front side (downward in FIG. 2) perpendicular to the paper surface in FIG. 10, and the container discharge holding mechanism 86 is positioned at the position shown by the solid line in FIG. (When positioned in such a position, as will be understood from FIG. 2, the receiving container 78 in the discharge area T is
Is discharged toward the container holding means 432 at the rear in the front-rear direction).

Referring to FIG. 2, in relation to the container holding means 432 described above, a pneumatic cylinder mechanism 492 is arranged on the side of the discharge area T opposite to the side on which the container holding means 432 is arranged. ing. When the pneumatic cylinder mechanism 492 is extended, its output rod 492a projects into the discharge area T and acts on the receiving container 78 in the discharge area T to hold it as shown by the chain double-dashed line in FIG. Discharge toward the means 432. On the other hand, when the pneumatic cylinder mechanism 492 is contracted, as shown by the solid line in FIG.
It does not act on the receiving container 78 in the discharge area T.
Incidentally, in the specific example, an opening 494 is formed at a required position of the guide plate 204, and when the pneumatic cylinder mechanism 492 is extended, the output rod 492a thereof is projected into the discharge area T through the opening 494.

Control System Next, the control system of the illustrated press machine will be described mainly with reference to FIG. In the illustrated specific example, eight detecting means for detecting the support table 230 on which the receiving container 78 is placed are provided. The detection means S1 and S2 are arranged at the downstream end of each container supply holding means 304 of the container supply mechanism 84 when viewed in the container supply direction. Detection means S3 is a container transport mechanism
It is arranged in 80 supply regions R. The detection means S4 is arranged in the receiving area Q of the container transport mechanism 80. The detecting means S5 is arranged between the supply area R and the receiving area Q. The detecting means S6 is arranged in the discharge area T of the container transport mechanism 80. Further, the detection means S7 and S8 are container discharge holding mechanisms.
The container holding means 432 of 86 is arranged at the upstream end of the container discharge direction. These detecting means S1 to S8 can be constituted by mechanical micro switches or proximity switches known per se.

In the container supply mechanism 84, the conveyor belt 320 is always the arrow 3
34 (FIG. 8), the blocking member 406 of the first movement blocking means 394 is normally held in the working position shown by the solid line in FIG. 9 and the blocking member of the second movement blocking means 396. 414 is held in the operating position shown by the solid line in FIG. 9, the pneumatic cylinder mechanism 420 of the forced moving means 398 is held in the second position shown by the solid line in FIG. 9, and its moving member 422 is shown in FIG. Is held in the operating position indicated by the solid line. Therefore, the pair of movement preventing portions 404 of the first movement preventing means 394 are provided in the pair of outer notches 424 formed at the front end of the support base 230 located at the downstream end of the container supply holding means 304 in the container supply direction. The support pedestal 230 is positioned to prevent movement of the support pedestal 230, and the support pedestal 230 (and thus the receiving container 78) located at the downstream end in the container supply direction is held in the state shown in FIG. Further, the pair of blocking members 414 of the second movement blocking means 396 has a pair of outer notches 424 formed at the front end of the support base 230 located second from the downstream end of the container feeding and holding means 304 in the container feeding direction. The support pedestal 230 which is located inside and blocks the movement of the support pedestal 230 and is located second from the downstream end in the container supply direction (hence the receiving container 78) is also held in the state shown in FIG. Further, the pair of moving members 422 of the forced moving means 398 are positioned in a pair of inner notches 426 formed at the rear end of the support base 230 located at the downstream end of the container supply holding means 304 in the container supply direction. (See Fig. 9).

In this state, when the receiving container 78 is conveyed from the supply region R of the container conveying mechanism 80 toward the receiving region Q as described later, and the detecting means S5 detects the support table 230 (and thus the receiving container 78), the pneumatic cylinder mechanism. 400 (Fig. 9) is deactivated. Thus, the blocking member 406 of the first movement blocking means 394.
Is positioned in a non-acting position shown by a chain double-dashed line in FIG.
The movement of the receiving container 78, which has been stopped by the first movement preventing means 394, becomes possible. Pneumatic cylinder mechanism 400
Is contracted, then the pneumatic cylinder mechanism 416 (Fig. 9)
Is activated. As a result, the pneumatic cylinder mechanism 416 is extended, and the pneumatic cylinder mechanism 420 (FIG. 9) is moved from the second position to the first position shown by the chain double-dashed line in FIG. 9 via the support member 418. Be moved. During such movement, the moving member 422 is held in the working position, and therefore, the moving member 422 acts on the rear end portion of the support base 230 to forcibly move in the feeding direction toward the feeding region R. (Note that at this time, since the conveyor belt 320 is also moving in the direction indicated by the arrow 334, the conveyor belt 320 also acts to move the receiving container 78).

As described above, the receiving container 78 is moved and supplied to the supply region R as required (in the specific example, in order to allow the supply of the receiving container 78 to the supply region R, the guide plate 206 is provided). The upper end portion is notched as required) and the detecting means S3 detects the supplied support base 230 (hence, the receiving container 78), whereby the pneumatic cylinder mechanisms 412 and 420 (FIG. 9) are detected. The pneumatic cylinder mechanism 400 (FIG. 9) is energized while being deenergized. Pneumatic cylinder mechanism 4
When 12 is deenergized and contracted, second movement blocking means 396
The blocking member 414 of FIG. 9 is positioned at the non-acting position indicated by the chain double-dashed line in FIG. 9, and the receiving container 78 stopped by the second movement blocking means 396 is blocked by the transport belt 320. Moved towards means 394. When the pneumatic cylinder mechanism 420 is deenergized and contracted,
The moving member 422 of the forced moving means 396 is moved to a non-acting position shown by a chain double-dashed line in FIG. 9 (shown in FIG. 9 when the pneumatic cylinder mechanism 420 is in the second position). The member 422 does not act on the receiving container 78 of the conveyor belt 320. Further, when the pneumatic cylinder mechanism 400 is urged and extended, the movement blocking portion 4 of the first movement blocking means 394.
04 is positioned in the working position. Thus, the receiving container 78 being moved by the action of the transport belt 320.
(The receiving container 78 located at the downstream end on the conveying belt 320 in the container supply direction) can be brought into contact with the movement blocking unit 404. Then, the pneumatic cylinder mechanism 416 (FIG. 9) is deenergized. Thus, the pneumatic cylinder mechanism 416 is contracted, and the pneumatic cylinder mechanism 420 is moved from the first position to the second position via the mounting member 418. During such movement, since the moving member 422 is held at the non-acting position, the moving member 422 does not act on the receiving container 78 being moved by the conveyor belt 320.

When the receiving container 78 located at the downstream end in the container supply direction on the conveyor belt 320 is moved to the first movement preventing means 394 as described above, a pair of outer notches formed at the front end of the support base 230. The portions come into contact with the pair of movement blocking portions 404 of the blocking member 406 in the working position to reliably stop the movement of the receiving container 78 (the receiving container 78 is held in the state shown in FIG. 9). . When the receiving container 78 moves to the position shown in FIG. 9, the detecting means S1 is located at the downstream end in the container supply direction (in other words, the supporting base stopped by the first movement preventing means 394). 230) and the pneumatic cylinder mechanisms 412 and 420 (9th
(Fig.) Is activated. When the pneumatic cylinder mechanism 412 is urged and extended, the blocking member 414 is positioned at the above-mentioned working position, and the support base is located second from the downstream end in the container supply direction.
230 (and thus the receiving container 78) is also reliably stopped by the blocking member by 414 (this also stops the movement of the support table 230 located subsequent to the support table 230). Also,
When the pneumatic cylinder mechanism 420 is urged and extended, the moving member 42 is positioned at the working position, and the upper end side of the moving member 422 of the support base 230 stopped by the first movement preventing means 394. Positioned within a notch 426 formed in the rear end.

Thus, the receiving container 78 in which the workpiece is not accommodated is supplied from the container supply mechanism 84 to the supply region R of the container transport mechanism 80, and in the container supply mechanism 84, the next receiving container 78 is in the supply standby state.

In the specific example, the detecting means S1 and S2 are further controlled as follows. First, although the first movement prevention means 394 is positioned at the above-mentioned operating position, the detection means
When S1 (or S2) does not detect the support base 230 for a predetermined period of time, in other words, the support base 230, and thus the receiving container, is placed on the container supply / holding means 304 located forward (or backward) in the front-rear direction.
If 78 is not present, the pneumatic cylinder mechanism 364 (8th
Figure) is deactivated (or energized). Thus, the pneumatic cylinder mechanism 364 is contracted (or extended), and the container supply / holding means 304 is positioned at the position shown by the chain double-dashed line (or solid line) in FIG. Thus, when the supply of the receiving container 78 from the container supply / holding means 304 located forward (or backward) in the front-rear direction is completed, the receiving container 78 is then transferred from the container supply / holding means 304 located rearward (front) in the front-rear direction. It is supplied to the supply region R of the container transport mechanism 80.

Further, in other words, when the detection means S1 and S2 do not detect the support 230 (and thus the receiving container 78) for a predetermined period of time despite the fact that both the first movement preventing means 394 are positioned at the above-mentioned operating position, in other words And container supply holding means 30 for both
When the support table 230 is not present on the container 4, a warning lamp (not shown) is turned on to inform the operator that the receiving container 78 to be supplied is not present on the container supply holding means 304.

The container transport mechanism 80 and the container discharge holding mechanism 86 are controlled as follows.

When the movable body 6 moves up and down in the press body 2 to finish a predetermined number of processes as described above (the number of processes can be known, for example, by detecting the number of rotations of the crankshaft 20), the press body is pressed. 2 stops.
In addition, the workpiece is the receiving area Q in the accommodation space S as described above.
When the press body 2 is stopped by being dropped into the receiving container 78 located at, the receiving container 78 contains a predetermined number of workpieces. When the press body 2 is stopped, next, the downstream side operating mechanism 24
8 pneumatic cylinder mechanism (not shown) and upstream actuation mechanism 2
46 pneumatic cylinder mechanisms 254 (Figs. 5 and 6) are energized. When the pneumatic cylinder mechanism of the downstream side operating mechanism 248 is urged and extended, the pair of downstream side restraining pieces 244 are positioned at the release position via the rotating shafts 250 and 252. When the pneumatic cylinder mechanism 254 of the upstream actuation mechanism 246 is urged and extended, the pair of upstream restraint pieces 242 are positioned at the release position shown in FIG. 7-A via the rotary shafts 250 and 252. And each locating member 294 is positioned in the inoperative position shown in Figure 7-A. As a result, as shown in FIG. 7-A, the receiving container 78 in the receiving area Q is supported by the support roller 208, the constraint of the receiving container 78 by the restraining pieces 242 and 244 is released, and the receiving container 78 is It can move freely on the receiving roller 208.

After that, the electric motor M is rotated. That way,
The rotating member 218 is rotated in the direction indicated by the arrow 222, and the pulling side 220a of the winding electric member 220 is moved in the direction indicated by the arrow 82. In this way, the 1 provided on the winding electric member 220
One working piece 224 acts on the support table 230 in the receiving area Q and another working piece 224 exists in the supply area R (the support table 230 is previously supplied to the supply area R as described above). The support base 230 located in the receiving area Q by the movement of the winding transmission member 220, and thus the receiving container 78 (a predetermined number of workpieces are stored in the receiving container 78). And the supporting table 230 located in the supply region R, and thus the receiving container 78 (the workpiece is not housed in the receiving container 78) are supported by the supporting rollers 208 and guided by the guide plates 204 and 206. While moving in the direction indicated by arrow 82.

When the receiving container 78 is thus transported and the receiving container 78 transported from the supply region R toward the receiving region Q passes through the detecting means S5, the detecting means S5 detects the support table 230. Thus, as described above, the pneumatic cylinder mechanism 400 (FIG. 9) of the container supply mechanism 84 is deenergized, and the new receiving container 78 is supplied to the supply region R of the container transport mechanism 80 as described below. It Further, in this way, the pneumatic cylinder mechanism (not shown) of the downstream side operating mechanism 248 is deenergized, and the rotary shafts 250 and 252 are rotated.
The downstream-side restraint piece 244 is positioned at the restraint position shown in FIG. 5 via the, and the downstream-side restraint piece 244 can come into contact with the support base 230 moved toward the receiving region R.

Then, the support table 230 from the supply region R, and thus the receiving container 7
When 8 is conveyed to the receiving area Q, the detecting means S4 detects the supporting table 230. As a result, the rotation of the electric motor M is stopped, the pneumatic cylinder mechanism (FIGS. 5 and 6) of the upstream actuation mechanism 246 is deenergized, and the upstream restraint is performed via the rotary shafts 250 and 252. The piece 242 is positioned in the restrained position shown in FIGS. 5, 6 and 7-B and each positioning member 294 is positioned in the working position shown in FIGS. 5, 6 and 7-B. Thus, the upstream restraint piece 24
The downstream side restraining piece 244 is positioned at the restraining position together with 2, and the support base 230, that is, the receiving container 78 transported to the receiving area Q, is securely held in the receiving area Q. Further, when the positioning member 294 is positioned at the working position, each roller 298 acts on the lower surface of the support base 230 to move it upward, and the receiving container 78 held in the receiving area Q is shown in FIGS. It is held at the receiving position shown in FIG. 7-B. When the detection means S4 detects the support table 230, the press body 2 is operated again, and the material to be processed is processed in the processing region P as required. At this time, the receiving container 78 in the receiving area Q
Is securely held in the receiving area Q by the action of the restraining pieces 242 and 244 and is surely held in the receiving position by the action of the positioning member 294. Therefore, the workpieces machined in the processing region P communicate with each other. It is surely dropped into the receiving container 78 through the hole 202.

In addition, the support 230 from the supply region R, and thus the receiving container 78.
Is conveyed to the receiving area Q, the support base 230 located in the receiving area Q, that is, the receiving container 78 is conveyed from the receiving area Q to the discharge area T. Thus, the detection means
S6 detects the support 230 and the pneumatic cylinder mechanism 492 is urged. When the pneumatic cylinder mechanism 492 is extended, the output rod 492a of the pneumatic cylinder mechanism 492 acts on the support table 230 located in the discharge area T, and the support table 230, and thus the receiving container 78, is held by the container holding means 432.
Is discharged to. (In a specific example, the upper end of the other end of the guide plate 206 is cut out as required to allow the above-described discharge of the receiving container 78). Container holding means 432
The receiving container 78 discharged onto the support roller 44 due to its own weight.
2 is moved toward the stop member 444, and is held on the container holding means 432 as required by contacting the stop member 444 or the receiving container 78 held on the container holding means 432. Next, the pneumatic cylinder mechanism 492 is contracted, and the output rod 492a of the pneumatic cylinder mechanism 492 is retracted from the discharge area T.

Thus, the receiving container 78 containing the workpiece is conveyed from the receiving region Q to the discharge region T, and discharged and held on the container holding means 432 of the container discharge holding mechanism 86 by the action of the pneumatic cylinder mechanism 492. On the other hand, a new receiving container 78 is transported from the supply region R to the receiving region Q to which the receiving container 78 has been moved.

The receiving container 78 is held in the receiving area Q, and the workpiece processed in the processing area P is received in the receiving area Q.
It is accommodated in a receiving container 78 held by the container as required. still,
As will be easily understood, when the new receiving container 78 does not exist, in other words, when the receiving container 78 is not supplied from the supply region to the receiving region Q, the detecting means S4 is the support base.
It does not detect 230 and therefore a new receiving container 7
The operation of the press body 2 will not be restarted until 8 is filled.

In the specific example, the following control is further performed in relation to the detection means S7 and S8. First, when the detection means S7 (or S8) continues to detect the support table 230 for a predetermined time, in other words, the container holding means 432 located in the front (or rear) direction in the front-rear direction.
When the required number of supporting bases 230, and thus the receiving container 78, are held and the next receiving container 78 cannot be discharged, the pneumatic cylinder mechanism 464 (FIG. 10) is deenergized (or biased). ) Will be done. Thus, the pneumatic cylinder mechanism 464 is contracted (or expanded), and the container holding means 432 is positioned at the position shown by the solid line (or the chain double-dashed line) in FIG. Thus, when the discharge of the receiving container 78 from the discharge region T of the container transport mechanism 80 to the container holding means 432 located in the front (or rear) of the front-rear direction is completed, the receiving container 78 then moves to the discharge region T.
Container holding means located at the rear (or front) in the front-back direction from
It is discharged onto 432.

In addition, the detection means S7 and S8 continue for a predetermined time and the support stand 230
, In other words, both container holding means 432
When the required number of supporting bases 230, and thus the receiving containers 78, are held and the next receiving container 78 cannot be discharged to the container discharge holding mechanism 86, a warning lamp (not shown) is turned on and the operator Is informed that the receiving container 78 cannot be discharged onto the container holding means 432.

Although one specific example of the pressing apparatus configured according to the present invention has been described above, the present invention is not limited to this specific example, and various modifications and corrections can be made without departing from the scope of the present invention. is there.

For example, in the specific example, the receiving container 78 is supported by the support base 230 and is conveyed integrally with the support base 230.
Alternatively, the receiving container 78 may be directly conveyed.

<Effects of the Invention> According to the present invention, first, it is possible to easily and surely discharge a workpiece from a processing region without lowering the strength of the frame and further improving the efficiency of the process. Less than,
The effect will be described in detail in relation to the configuration.

(1) A workpiece storage space is formed below the stationary lower frame corresponding to the processing region, and the workpiece storage space is a through hole formed in the upper frame so as to extend in the front-rear direction.

Since it is a through hole, it forms a structure in which the upper, lower, left and right sides are closed by walls. As a result, the strength of the upper frame is substantially improved. In the embodiment, a pair of left and right hanging parts are integrally formed with the upper wall of the upper frame. The through hole is easily formed by integrally providing the wall. Since the hanging parts that face each other at intervals are connected by the bottom part and the closed structure is formed on the upper part, the strength of the upper frame is substantially improved. Therefore, the strength of the upper frame is remarkably improved as compared with the conventional structure in which the chute is provided.

(2) Since the workpiece storage space is a closed structure including a through hole formed in the upper frame so as to extend in the front-rear direction, it is separated from the space of the frame body in which the drive system such as the crankshaft is arranged. . As a result, it is possible to reliably prevent scrap or dust such as cutting chips from scattering into the space of the frame body and damaging the drive system such as the crankshaft arranged in the space. Is guaranteed.

(3) The upper frame connects the processing area and the processing object storage space so that the processing object processed in the processing area is dropped to the receiving area in the processing object storage space, which is located below the processing area. A communication hole is formed.

Since the communication hole is formed in the vertical direction, the workpiece can easily fall into the receiving area without staying midway like a conventional chute having an inclined portion. Therefore, it is not necessary to stop the device for removing the workpiece, so that the operation rate is improved.

(4) Since only the communication hole is formed in the upper frame and it is not necessary to provide the chute, the structure of the device becomes extremely compact.

(5) A container transporting mechanism that transports a workpiece receiving container in which the workpiece is stored is provided in association with the workpiece storage space. The container transport mechanism transports the workpiece receiving container from one side in the front-back direction to the other side through the workpiece storage space, and the workpiece processed in the processing area falls into the workpiece receiving container transferred to the receiving area. It is designed to be punished.

Therefore, since the workpiece falls directly into the workpiece container, unlike the conventional device using the belt conveyor, there is no possibility that the workpiece or scrap will be scattered around. In addition, the conveyor such as a belt conveyor is not damaged. Further, since the workpieces can be dropped directly into the workpiece receiving container, a container for accommodating them is disposed at the end of the transport device as in the conventional case, and the workpieces or scraps dropped on the transport device can be retained. Eliminates the step of dropping into a container. That is, the transport mechanism in the present invention is
Unlike a conventional device that directly receives and conveys falling workpieces and the like to a conveyor device such as a belt conveyor, it conveys a workpiece container, and the workpiece container is directly used in the next process. Can be transported. Therefore,
Compared with the conventional method, the processing steps are omitted and the efficiency is improved.

According to the present invention, secondly, the vibration of the crankshaft can be surely reduced and the processing speed can be increased while the device is made compact. Hereinafter, the effect will be described in detail in relation to the configuration.

(A) One balancer is attached to the crankshaft substantially at the center between both ends supported by each of the side frames via another crank.

Therefore, it is not necessary to balance the balancers with each other as in the conventional device having two balancers, and therefore, the processing, weight, and assembly of the balancers are not required to be particularly strict as in the conventional case. Further, the balancer for reducing the vibration of the crankshaft is prevented from becoming a new source of vibration as in the conventional case. As a result, the vibration of the crankshaft can be reliably reduced at a relatively low cost, and the vibration of the entire device is reduced. As a result, the rotation speed of the crankshaft and hence the processing speed can be achieved relatively easily.

In the present invention, a pair of lower crossheads is arranged in relation to the crankshaft, one lower end of the crank portion is connected to one lower crosshead via a connecting means, and the other lower end of the crank portion is connected. Is connected to the other of the lower crossheads via a connecting means, and each of the lower crossheads is connected to the upper crosshead via a connecting rod.

With this configuration, the lower crosshead is divided into left and right parts, and therefore, a relatively large space is formed between each crank portion and each lower crosshead below the crankshaft. By forming this space, the balancer
The above-described configuration is possible in which the crankshaft is mounted substantially at the center between both ends supported by each of the side frames.

(B) Further, since the balancer is mounted on the crankshaft substantially at the center between both ends supported by each of the side frames, the balancer for reducing the vibration of the crankshaft is
As in the conventional case, it is prevented from becoming a new source of vibration. Furthermore, since the balancer is located at the center of the device, the vibration of the entire device is reduced more effectively.

As a result, the vibration of the crankshaft can be reduced extremely effectively, so that the vibration of the entire device is reduced. As a result, the rotation speed of the crankshaft and hence the processing speed can be achieved relatively easily.

(C) Since the balancer is mounted on the crankshaft substantially at the center between the ends supported by each of the side frames, the axial space is significantly shortened as compared with the prior art.

As a result, the entire device becomes significantly compact and the configuration is simplified.

(D) Since the balancer is mounted substantially in the center of the crankshaft between both ends supported by each of the side frames, the crankshaft becomes shorter than the conventional one.

As a result, there is no need to increase the rigidity of the crankshaft as in the conventional case. This reduces weight and lowers costs.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a simplified example of a specific example of a pressing apparatus configured according to the present invention. FIG. 2 is a cross-sectional view showing a view from the line II-II in FIG. FIG. 3 is a cross-sectional view showing a lower portion of the pressing device shown in FIG. FIG. 4 is a sectional view taken along the line IV-IV in FIG. FIG. 5 is a view showing the workpiece storage space of the pressing device of FIG. 1 as seen from above. FIG. 6 is a cross-sectional view showing an upstream operation mechanism and its related elements in the container transport mechanism of the pressing device of FIG. 1. 7-A and 7-B are views for explaining the operation of the upstream side operating mechanism of FIG. 6, respectively. FIG. 8 is a front view showing a container supply mechanism attached to the pressing device of FIG. FIG. 9 is a view for explaining the operation of the container supply mechanism shown in FIG. FIG. 10 is a front view showing a container discharge holding mechanism attached to the pressing device of FIG. 1. 2 ... Press body 4 ... Stationary lower part 6 ... Movable upper part 20 ... Crank shafts 32 and 34 ... First crank part 36 ... Second crank part 42 and 44 ... Lower crosshead 48 ... Balancer 62 …… Upper crosshead 68 …… Lower forming tool 78 …… Receiving container 80 …… Container transport mechanism 84 …… Container supply mechanism 86 …… Container discharge holding mechanism P …… Processing area Q …… Receiving area R …… Supply Area S: Workpiece storage space T: Discharge area

Claims (2)

[Claims] 1. A stationary lower part having a lower forming tool, and a movable upper part having an upper forming tool and moved up and down with respect to the stationary lower part, the stationary lower part comprising a bottom frame and a bottom frame. A frame body including a pair of side frames extending upward with a space in the left-right direction and an upper frame connecting between upper ends of the side frames is provided, and the lower molding tool is provided above the upper frame. And the frame body is
There is a space surrounded by the bottom frame, each of the side frames, and the upper frame, and a crank shaft for vertically moving the movable upper part is rotatably supported by the pair of side frames. By doing so, the portion of the crankshaft between each of the side frames is positioned in the space of the frame body, and the lower forming tool is provided in the processing region existing between the stationary lower portion and the movable upper portion. In a press device for processing a material to be processed by the cooperative operation of the upper forming tool, a work accommodating space is formed below the stationary lower frame corresponding to the processing region, The accommodation space is formed of a through hole formed in the upper frame so as to extend in the front-rear direction, and the processed product processed in the processing region is present below the processing region in the upper frame. A work receiving container in which a work is accommodated in relation to the work accommodating space is formed with a communication hole for communicating the work area with the work accommodating space so as to be dropped into the receiving area in the accommodation space. A container transport mechanism for transporting the workpiece is attached, and the container transport mechanism transports the workpiece receiving container from one side in the front-rear direction to the other side through the workpiece storage space, and a workpiece processed in the processing region. Is configured to be dropped into the workpiece receiving container conveyed to the receiving area. 2. A stationary lower part having a lower forming tool, and a movable upper part having an upper forming tool and moved up and down with respect to the stationary lower part, the stationary lower part comprising a bottom frame and the bottom frame. A frame body including a pair of side frames extending upward with a space in the left-right direction and an upper frame connecting between upper ends of the side frames is provided, and the lower molding tool is provided above the upper frame. And the frame body is
There is a space surrounded by the bottom frame, each of the side frames, and the upper frame, and a crank shaft for vertically moving the movable upper part is rotatably supported by the pair of side frames. By doing so, the portion of the crankshaft between each of the side rams is positioned within the space of the frame body, the movable upper portion including a single upper crosshead, A pair of cranks is provided at both ends of the portion between each of the side frames, and by the cooperation of the lower forming tool and the upper forming tool in a processing region existing between the stationary lower portion and the movable upper portion. In a press device for processing a material to be processed, a pair of lower crossheads is arranged in relation to the crankshaft, and one lower end of the crank portion is connected to one of the lower crossheads via a connecting means. , The other lower end of the crank portion is connected to the other of the lower crossheads via a connecting means, and each of the lower crossheads is connected to the upper crosshead via a connecting rod, , At the substantially central portion between both ends supported by each of the side frames, through another crank portion.
A press device, which is equipped with two balancers.