JPH0530820Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a device for feeding a plate material to a press machine.

(Prior Art) Press workpieces are broadly divided into coil-shaped ones (hereinafter referred to as coil materials) and plate-shaped ones (hereinafter referred to as plate materials). Coil materials are used when pressing large quantities of the same product, and plate materials are used when pressing small quantities.

In a press processing line that uses plate materials for high-mix, low-volume production, the plates loaded on the loading section are carried one by one by a feeding device and placed on another feeding device located near the press machine. is sent to the press machine.

A feeding device for feeding a plate material through a press machine includes, for example, a large number of free rollers, a chain conveyor placed on both sides of the free rollers, and claws attached to the chain of the chain conveyor. The plate material is placed on a free roller and the claw pushes the edge of the plate material on the side opposite to the press machine, thereby sending the plate material to the press machine.

(Problems to be solved by the invention) With the conventional configuration, there is a limit to how close the claws can be to the lower die of the press, and the edge of the plate on the opposite side of the press, that is, near the terminal edge, has a limit. Since it cannot be sent to the lower die, this part is not used for press processing and is ultimately discarded, which has the disadvantage of wasting material.

It is also conceivable to use another device for the final feeding of the plate material, but this would result in a complicated configuration.

(Means for solving the problem) This invention was made to solve the above problem, and its gist is that in a device that feeds a plate material to a press machine, (a) (b) A plurality of conveyors are fixed on the endless belt at intervals in the sheet material feeding direction, and the sheet materials are placed directly on the upper surface of the conveyor, which is orthogonal to the endless belt. (c) a first support stand in the form of a long plate, which is long in the direction; A second belt is connected to the belt, and the end on the press machine side is a free end extending in the tangential direction of the endless belt, and the terminal end of the plate material is directly placed on the free end.
(iv) A support stand provided on this second support stand, and the terminal end of the plate placed on the free end of the second support stand is connected to the second support stand.
(e) a chuck mechanism that grips the terminal end by pressing it onto a support base; A feeding device for press plates, comprising: a position regulating member for positionally regulating both widthwise edges of a plate placed thereon;

(Function) When sending the plate material to the press machine, first
The support stand and the second support stand are positioned on the linear moving section on the upper surface side of the conveyor, and in this state, the plate material is lowered from above onto the conveyor in a horizontal position, and the first support stand and the second support stand are placed on the top side of the conveyor. Place it on top. At this time,
The end of the plate material (the end on the opposite side from the press machine) is
Place it on the free end of the support base. Then, the terminal end of the plate material is gripped by the check mechanism, and both widthwise edges of the plate material are regulated by the position regulating members to position the plate material at the correct position.

As long as the second support is on the linear moving part of the endless belt, the free end of the second support extends in the tangential direction of the belt, so it is not suspended in the air but remains stable on the belt. Riding with attitude. Therefore, when the plate material is placed as described above, the plate material is stably supported on the first and second support stands fixed on the belt. Furthermore, in this state, the terminal end of the plate material is held by pressing it against the second support base, so that the plate material is firmly held on the endless belt in a stable posture.

Then, by driving the conveyor in this state, the plate material is sent to the press machine. At this time, the widthwise position of the board is always regulated by the position regulating member, and the end is gripped by a chuck mechanism, so even if the board is long, it will remain in the correct position.
It is sent to the press without shifting laterally. Finally, since the free end of the second support base separates from the endless belt of the conveyor, the chuck mechanism can be brought closer to the lower mold, and the plate material can be fed to the lower mold to the vicinity of the end. As a result, the plate material can be pressed using a press machine without waste.

(Example) Hereinafter, an example of this invention will be described based on the drawings from FIG. 1 to FIG. 7.

In FIGS. 1 and 2, numeral 10 indicates a gate-type press machine, and this press machine 10 includes a frame 11 having a supply port 11a and a take-out port 11b, and a bolster 12 supported by this frame 11. , a plurality of lower molds 13 installed on a bolster 12, and an upper mold 14 that is slidably supported by a frame 11 and moves up and down with respect to the lower molds 13.

A work supply system is connected to the press machine 10. To explain in detail, an uncoiler 20 (support device) is arranged at a position away from the press 10. On the straight line connecting the uncoiler 20 and the press machine 10, there is a leveler 25, a first feeder 4
0. The second feeding devices 50 according to the present invention are arranged in order from the uncoiler 20 side.

The uncoiler 20 is well-known and will not be described in detail, but it is supported by a base 21, a plurality of mandrel arms 22 that are rotatably supported with respect to the base 21, and can be expanded and contracted in the radial direction, and each mandrel arm 22. A pair of receiving members 23 are provided. The leveler 25 is also known and includes a housing 26 having an inlet 26a and an outlet 26b, and a number of rollers 27 built into the housing 26.

As shown in FIGS. 3 and 4, the first feeding device 40 and the second feeding device 50 share a common base 3.
It is set to 0.

To explain the first feeding device 40, the base 3
A housing 41 is fixed to the upper surface of the end of the uncoiler 20 (the right end in FIGS. 3 and 4). The housing 41 has an inlet 41a.
An outlet port 41b is formed. Housing 4
1 includes a drive roller 43 and a press roller 44. The drive roller 43 is driven by a shaft 45
The shaft 45 is rotatably supported by the housing 41. The holding roller 44 is rotatably supported by a shaft 46, and the shaft 46 is urged downward by a spring (not shown). As a result, the press roller 44 is pressed against the drive roller 43. An air cylinder 48 is fixed to the upper surface of the housing 41 via a bracket 47, and when the rod 48a of the air cylinder 48 is extended, the press roller 44 is pulled up via a link mechanism 49. .

On the upper surface of the base 30, the second feeding device 50 is placed between the first feeding device 40 and the press machine 10. This second feeding device 50
has a conveyor 51, a chuck mechanism 60 that is moved by the conveyor 51, and two sets of guide mechanisms 70.

The conveyor 51 has a frame 52, which has a U-shaped longitudinal section and is fixed to the upper surface of the base 30, with one end inserted into the supply port 11a of the press 10. Shafts 53 and 54 are rotatably supported at both ends of the frame 52, and pulleys 5 are attached to the shafts 53 and 54.
5 and 56 are fixed. These pulleys 55,
A steel belt 57 (endless belt) is stretched between the belts 56 and rotates around the belt. At the upper edge of the frame 52 and the end on the press machine 10 side,
An edge member 59 having a small coefficient of friction is attached.

The chuck mechanism 60 is provided on a support stand (second support stand) 61. As shown in FIG. 5, both ends of the steel belt 57 are connected to the lower surface of the support base 61 by rivets 61a, so that the steel belt 57 is in an endless state. The connection point between the steel belt 57 and the support stand 61 by the rivet 61a is the end of the support stand 61 on the press machine 10 side (the left end in FIG. 5).
The support base 61 is therefore free with respect to the steel belt 57 between this end and the connection point.

This free end extends in the tangential direction of the steel belt 57 and rides on the steel belt 57 in the section where the steel belt 57 moves linearly. The terminal end of the plate material 101 is placed directly on this free end. Further, the support stand 61 is connected to the pair of edge members 59
It is designed to be placed on top and guided.

The chuck mechanism 60 has the following configuration. That is, at the two corners of the support stand 61 on the uncoiler 20 side, a pair of air cylinders 6 are provided on the upper surface thereof.
2 is rotatably supported by a bracket 62b. A pair of bearings 64 are fixed to two corners of the support stand 61 on the press machine 10 side.
4, both ends of a shaft 63 extending in a direction perpendicular to the steel belt 57 are rotatably supported. One end of each link 65 is fixed to both ends of the shaft 63, and each link 65
The other end is the rod 62a of the air cylinder 62.
is rotatably connected to the tip of the

A pair of mounting members 66 are supported on the shaft 63 inside a pair of bearings 64 . A storage hole 66a for storing the shaft 63 is formed in the mounting member 66, and a key 67 is fitted and fixed into the inner peripheral surface of the storage hole 66a. This key 67 is fitted into a long groove 63a formed on the outer peripheral surface of the shaft 63. This long groove 63a extends in the axial direction of the shaft 63. Thereby, the mounting member 66 can be adjusted to slide in the axial direction with respect to the shaft 63,
Relative rotation is not possible.

A slit 66b is formed in the mounting member 66 and is connected to the storage hole 66a. In addition, one of the parts facing each other through this slit 66b has
A through hole 66c is formed, and a screw hole 66d is formed on the other side.
is formed. When the mounting member 66 tightens the shaft 63 by screwing the screw 68 inserted through the through hole 66c into the screw hole 66d, the mounting member 66 becomes unable to slide, and the mounting member 66 is fixed to the shaft 63. In addition,
By loosening the screw 68, the mounting member 66 can be slidably adjusted.

A flange portion 6 is provided on the opposing surfaces of the pair of mounting members 66.
6e is formed, and a pressing member 69 with a pointed tip is screwed into this collar portion 66e.
The holding member 69 is locked in the screwed-in state by a fixing nut 69a.

The chuck mechanism 60 grips the end of the plate 101 by pressing the plate 101 against the upper surface of the support base 61 using the presser member 69.

The two sets of guide mechanisms 70 are disposed close to the press machine 10 (forward in the sheet material feeding direction) from the chuck mechanism 60 and are spaced apart from each other in the sheet material feeding direction, and as shown in FIG. A support stand (first
(support stand) 71. This support stand 71
is composed of a long plate that is long in the direction perpendicular to the steel belt 57, and both ends of the lengthwise direction are as follows.
Like the support base 61 of the chuck mechanism 60, it is placed on and guided by the edge member 59 of the frame 52.

Support stand (second support stand) 6 of chuck mechanism 60
1 and the upper surfaces 61c, 71c of the support stand (first support stand) 71 of the guide mechanism 70 serve as mounting surfaces on which the plate material 101 and the coil material 102 are placed, as will be described later.

A pair of roller mechanisms (position regulating members) 72 are supported on a support base 71 of the guide mechanism 70 so as to be slidably adjustable. More specifically, as shown in FIG. 7, the support base 71 has a long hole 71a formed along its longitudinal direction. In the elongated hole 71a, the width of the upper part is narrower than the width of the lower part, and a step 71b is formed at the boundary. A nut 73 is housed in the elongated hole 71a from below, and a screw 74 is screwed into the nut 73, passing through the elongated hole 71a from above.

A bearing 78 is fastened and fixed between the head of the screw 74 and the upper surface of the support base 71 via a washer 75, a collar 76, and a stepped sleeve 77. A rubber roller 79 having a tapered upper portion is rotatably supported by the bearing 78. Note that the sleeve 77 is tightened with the tightening force of the screw 74.
is pressed against the upper surface of the support base 71, thereby fixing the roller mechanism 72 in a predetermined position. By loosening the screw 74, the roller mechanism 72 can be slid along the longitudinal direction of the support base 71.

As shown in FIG. 3, a motor 31 and a clutch 32 are arranged inside the base 30, and these motor 31 and clutch 32 are connected via toothed pulleys 33a, 33b and a timing belt 34. has been done. Further, a shaft 45 that supports a drive roller 43 of a first feeding device 40 is connected to the clutch 32 via toothed pulleys 33c, 33d and a timing belt 35. Furthermore, the clutch 32 is provided with a second feeding device 5.
The shaft 53 of the conveyor 51 of No. 0 is connected via toothed pulleys 33e, 33f and a timing belt 36. This clutch 32 is used to switch between the driving of the first feeding device 40 and the second feeding device 50.

As shown in FIGS. 3 and 4, the base 30 has a side projecting from the second feeding device 50, and this projecting portion 30a is formed lower than the other portions. A stacking section 80 for the plate material 101 is provided on this projecting section 30a. More specifically, a large number of free rollers 82 are arranged in parallel on the upper surface of the projecting portion 30a with brackets 81 interposed therebetween. In the vicinity of this free roller 82, a plate material 10
A regulating member 83 that performs longitudinal positioning of 1
and two regulating members 84 for positioning the plate material 101 in the width direction. Regulation member 84
is adapted to be slidably adjusted in accordance with the width of the plate material 101. The free roller 82 includes
A support stand 85 loaded with plate materials 101 is placed thereon.

A third feeding device 90 is arranged between the loading section 80 and the second feeding device 50. The third feeding device 90 includes a rectangular frame 91 arranged above the loading section 80 and the third feeding device 90.
This frame 91 has four pillars 9.
2 and is supported in a cantilevered manner. The frame 91 is provided with a pair of rails 91a extending in a direction orthogonal to the conveyor 51, and a slide table 94 is supported by the rails 91a so as to be horizontally movable. On the other hand, in the center of the frame 91 is a middle crosspiece 9.
1b, and an air cylinder 93 is fixed to this middle crosspiece 91b.

The tip of the rod 93a of the air cylinder 93 is connected to the slide table 94. Slide stand 9
Another air cylinder 95 is fixed in the center of 4,
Sleeves 96 are fixed to both sides of the air cylinder 95. Rod 95a of air cylinder 95
penetrates the slide base 94 and projects downward. Further, a guide rod 96a is inserted through the sleeve 96 so as to be movable up and down. air cylinder 95
A lifting platform 97 is fixed to the lower ends of the rod 95a and the guide rod 96a. A large number of horizontally extending arms 98 are fixed to the lifting platform 97, and suction cups 99 for vacuum suction are attached to both ends of the arms 98.

In the above configuration, the plate material 101 is pressed into the press machine 10.
We will explain the case of press processing for high-mix, low-volume production.

As described above, the plate material 101 is loaded on the loading section 80 and is sent to the second feeding device 50 by the third feeding device 90. To be more specific, the air cylinder 93 is driven to extend the rod 93a, and the slide table 94 is moved from the position directly above the second feeding device 50 to the position directly above the loading section 80.
horizontal movement along 1a. Next, the air cylinder 95 fixed to the slide table 94 is driven to extend the rod 95a and lower the elevating table 97. Then, among the stacked plates 101, the top one is sucked by a suction cup 99.

Next, the rod 95a of the air cylinder 95 is retracted to lift the plate 101. Next, the rod 93a of the air cylinder 93 is retracted to horizontally move the plate 101 from a position directly above the loading section 80 to a position directly above the second feeding device 50. Next, the rod 95a of the air cylinder 95 is extended to lower the plate material 101.

In addition, apart from this, a support stand 61 is fixed to the chuck mechanism 60 by driving the steel belt 57.
and the support base 71 of the guide mechanism 70 are connected to the belt 5.
7 at a predetermined position on the linear moving section. From this state, the plate material 101 is lowered, and the free ends of the support bases 61 of the chuck mechanism 60 and the upper surfaces 61c and 7 of the support bases 71 of the two guide mechanisms 70 are
1c, and once placed, the suction state by the suction cup 99 is released.

After this, the rod 95a of the air cylinder 95 is
is retracted, and the lifting platform 97 is raised. In addition, plate material 1
01 is guided by the taper of the rubber roller 79 of the guide mechanism 70 on both sides in the width direction and is reliably positioned at the correct position.

After the plate material 101 is placed on the support stands 61, 71, the rod 62a of the air cylinder 62 of the chuck mechanism 60 is extended and the link 65 is rotated. Then, the shaft 63 rotates following this, and the pair of attachment members 66 rotate, and the pointed tip of the presser member 69 fixed to the attachment members 66 is connected to the end of the plate material 101 (on the uncoiler 20 side). 2 corner portions) against the support stand 71, and grasp this end.

As described above, the chuck mechanism 60 allows the plate material 1 to
01, the motor 31 is started to rotate the pulley 55 of the conveyor 51. Note that the clutch 32 connects the motor 31 and the shaft 53 of the second feeding device 50, and releases the connection between the motor 31 and the shaft 45 of the first feeding device 40. As the pulley 55 rotates, the upper side of the steel belt 57 moves toward the press 10, and accordingly, the plate 101 is sent toward the press 10.

During this movement, the plate material 101 is
With the chuck mechanism 6 resting stably on top of 1,
0, the terminal end is firmly held, and both side edges are positionally regulated by rubber rollers 79 of the guide mechanism 70. Therefore, even if the plate material 101 is long, it is sent to the press machine 10 in the correct posture without shifting laterally.

Then, when the end of the plate material 101 on the press machine 10 side is placed on the first lower die 13 of the press machine 10,
The feeding of the plate material 101 by the conveyor 51 is temporarily stopped, and then the upper mold 14 is lowered and the plate material 101 is
Cut 1. The cut workpiece is transferred to the next lower mold 13
Press processing such as drawing and drilling is performed one after another using the upper die 14 and the upper die 14, and finally the product is taken out from the take-out port 11b. From the first lower mold 13 to the lower mold 1 of the next process
3 and the final removal from the lower die 13 are performed by a robot (not shown) installed in the press machine 10.

The plate material 101 is cut several times by the first lower die 13 and the upper die 14 as described above while being intermittently conveyed.
When the last remaining short plate material 101 is placed on the lower mold 13, the chuck mechanism 60 enters the supply port 11a of the press 10 and further approaches the lower mold 13. As shown in FIG. 5, the support stand 61 is free with respect to the steel belt 57 between the end on the press machine 10 side (the left end in the figure) and the connection point to the steel belt 57 by a rivet 61a. Therefore, this part can be made to protrude from the pulley 56 toward the lower die 13, and as a result, the chuck mechanism 6
0 as close as possible to the lower die 13, and the last remaining short plate 101 near the terminal edge is moved to the lower die 1.
You can definitely place it on 3.

After the final remaining portion of the plate material 101 is placed on the lower die 13, the rod 62a of the air cylinder 62 is retracted, the pressing member 69 is released from the plate material 101, and the gripping state is released. Thereafter, the motor 31 is reversely rotated to return the chuck mechanism 60 to the end of the conveyor 61 on the first feeding device 40 side. Note that after the chuck mechanism 60 is retracted from the lower mold 13, the above-mentioned press working is performed. As described above, the plate material 101 can be completely fed to the lower die 13 up to the vicinity of the end edge and subjected to press working, and waste of material can be eliminated.

Between the time when the conveyor 51 starts driving and the time when the chuck mechanism 60 returns to its original position, the third feeding device 90 transports the plate material 101 from the loading section 80 to the position directly above the second feeding device 50, as described above. Waiting at the terminal, and repeating the same operation from now on.

Next, the coil material 102 is sent to the press machine 10,
A case of press working for mass production of a small number of products will be explained. The coil material 102 is inserted into the mandrel arm 22 of the uncoiler 20, and both sides of the coil material 102 are supported by receiving materials 23. Pull out the end of the coil material 102 and insert it between the rollers 27 from the inlet 26a of the housing 26 of the leveler 25, and
Pull it out from 6b. Furthermore, it is inserted between the drive roller 43 and the pressing roller 44 through the introduction port 41a of the housing 41 of the second feeding device 40.

Switch the clutch 32 in advance, and then switch the motor 3.
1 is connected to a shaft 45 that supports a drive roller 43. When the motor 31 is driven in this state, the drive roller 43 rotates and the coil material 102
is sent toward the press machine 10. Coil material 102
is pulled out from the uncoiler 20, and the leveler 2
When passing through 5, the curling habit is corrected. Coil material 1
02 is sent to the press machine 10 while being placed on the upper surfaces 61c and 71c of the support stands 61 and 71, and is cut by the first lower mold 13 and upper mold 14, and then press-processed in the same manner as in the case of the plate material 101 described above. be done. The coil material 102 is rotated by the intermittent rotation of the drive roller 43.
The coil material 102 is fed intermittently, but at this time, the rubber rollers 79 of the guide mechanism 70 restrict both side edges of the coil material 102, so that the coil material 102 is accurately fed to the lower mold 13 without being laterally displaced.

Note that even if the widths of the plate material 101 and the coil material 102 are different, the positions can be adjusted by sliding the pair of mounting members 66 of the chuck mechanism 60 and sliding the roller mechanism 72 of the guide mechanism 70. 101 can be reliably gripped by the chuck mechanism 60, and both side edges of the plate material 101 and the coil material 102 can be reliably guided by the rubber rollers 79.

This invention is not limited to the above-mentioned embodiments, and various embodiments are possible. For example, this invention may be applied to a supply system that only feeds board materials. Specifically, in FIGS. 3 and 4, the function of feeding the coil material, that is, the first feeding device is omitted. In this case, the chuck mechanism may grip the center of the plate at the end opposite to the press.

Further, the plate material feeding device of the present invention can be used in various types of press machines, such as press machines that employ a punching method.

(Effects of the invention) As explained above, in this invention, the free end of the second support base to which the chuck mechanism is fixed separates from the endless belt at the end of the conveyor, so the chuck mechanism can be moved closer to the lower die of the press. be able to.
Therefore, it becomes possible to press the plate material to the vicinity of the end, and waste of material can be avoided. Moreover, there is no need to separately provide a device for feeding the portion near the end of the plate material to the lower die, and the structure is simple.

Furthermore, in this invention, since the free end of the second support base extends in the tangential direction of the endless belt,
As long as the support stand is on the linear moving part of the endless belt, the free end does not float in the air and rides on the belt in a stable posture. Therefore, the plate material can be placed on the first support stand and the second support stand in a stable posture. Furthermore, since the plate is held in this stable placement position by being pressed onto the second support base by the chuck mechanism, the load of the plate is not forced on the chuck mechanism. In other words, since the chuck mechanism does not support the entire load of the plate, it is possible to stably grip the plate without increasing the gripping force of the chuck mechanism. Further, since the position regulating members constantly regulate the position of both widthwise edges of the plate material, the plate material can be stably held without the risk of misalignment.

From the above, according to the present invention, even if the board is long, it can be maintained in an extremely stable and correct posture.
This has the advantage of being able to be sent to the press without shifting laterally.

[Brief explanation of the drawing]

The drawings from FIG. 1 to FIG. 7 show one embodiment of this invention. FIGS. 1 and 2 are schematic diagrams of a feeding system equipped with the plate material feeding device of this invention, with FIG. 1 showing the case of feeding a plate material, and FIG. 2 showing the case of feeding a coil material, respectively. FIG. 3 is a side view of the feeding device, FIG. 4 is a plan view thereof, FIG. 5 is an enlarged side view of the chuck mechanism, FIG. 6 is a front view of the guide mechanism, and FIG. FIG. 3 is an enlarged cross-sectional view taken along the line. DESCRIPTION OF SYMBOLS 10...Press machine, 50...Second feeding device (board material feeding device), 51...Conveyor, 57...Steel belt (endless belt), 60...Chuck mechanism, 61...Support stand (second support ), 70...
Guide mechanism, 71... support stand (second support stand),
72...Roller mechanism (position regulating member), 101...
...Plate material.

Claims (1)

[Scope of Claim for Utility Model Registration] In a device for conveying plate materials to a press machine, (a) a conveyor for conveying the plate materials to the press machine by placing the plate materials on the upper surface of a rotating endless belt; (b) on the endless belt, (c) a first support stand in the form of a long plate that is long in a direction orthogonal to the endless belt, on which a plurality of support stands are fixed at intervals in the sheet material feeding direction and on which the sheet materials are directly placed; It is arranged at the rear of the belt in the sheet material feeding direction, and is connected to the endless belt at a position spaced apart from its own end on the press machine side, and the end on the press machine side extends in the tangential direction of the endless belt. a second free end on which the terminal end of the plate is directly placed;
(iv) A support stand provided on this second support stand, and the terminal end of the plate placed on the free end of the second support stand is connected to the second support stand.
(e) a chuck mechanism that grips the terminal end by pressing it onto the support base; A feeding device for press plate materials, comprising: a position regulating member for positionally regulating both widthwise edges of a plate material placed thereon;