JPH04220124A - Workpiece conveyance device in transfer press machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a workpiece conveying device in a transfer press machine, and more particularly, the present invention relates to a workpiece conveying device in a transfer press machine, and more particularly, the present invention relates to a workpiece conveying device in a transfer press machine, and more particularly, the present invention relates to a workpiece conveying device in a transfer press machine, which allows a suction plate installed in the transfer press machine to be easily replaced. Regarding a conveyance device.

0002

[Prior Art] Conventionally, in a transfer press machine, molds for various presses are arranged in a row at equal intervals in the conveyance direction of the workpiece, and a suction plate that moves while holding the workpiece is placed between each mold. A series of compositional processing is performed continuously by using a transport device to sequentially transport the workpieces processed in each mold to the mold for the next step. Regarding this type of device, the present applicant has already disclosed
No. 4297 and Japanese Unexamined Patent Publication No. 61-235310 propose a high-speed and stable conveying device.

In this case, the suction disk is attached to a handling bar that is perpendicular to the direction of conveyance of the workpiece, and it becomes necessary to replace it depending on the type of workpiece, deterioration over time, etc. In order to meet this requirement, a support mechanism is provided on the moving bolster, and after the handling bar is once held by the support mechanism, it is removed from the conveyance path integrally with the moving bolster.

0004

[Problems to be Solved by the Invention] However, as mentioned above, a special support mechanism must be provided in order to replace the suction disk, and it is also necessary to separate the moving bolster from the feed bar that serves as a means of supplying the workpiece. As a result, a considerable amount of time is wasted.

The present invention solves this kind of problem, and makes it possible to easily and quickly replace the suction disc for conveying the workpiece in a transfer press machine, and also to simplify the structure. It is also an object of the present invention to provide a work transfer device for a transfer press machine that is easy to handle.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for molding a workpiece made of a thin plate member by sequentially conveying it to a plurality of molds arranged in a linear manner. In the transfer press machine, the mold is disposed on a moving bolster along the conveyance direction of the workpiece, and the moving bolster has a guide rail extending in the conveyance direction of the workpiece, and the mold is displaced along the guide rail. The present invention is characterized in that a truck is optionally provided, a driving member that is displaceable in the vertical direction is provided on the truck, a handling bar is bridged over the driving member, and a suction plate is provided on the handling bar in a replaceable manner.

[0007]

[Function] In the work transfer device for the transfer press machine according to the present invention, when it becomes necessary to replace the suction plate, the moving bolster and the cart attached to it are taken out as a unit and attached to the handling bar. The suction disc that has been removed can be replaced with another suction disc externally.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the work conveying device for a transfer press machine according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a transfer press machine in which a workpiece conveyance device according to a first embodiment of the present invention is incorporated. This transfer press machine 10
Several types of press dies are arranged along the conveyance direction of the workpiece W made of a thin plate material to perform required compositional processing on the workpiece W. That is, the transfer press machine 1
Rail members 14a and 14b having concave grooves perpendicular to the transport direction of the workpiece W are disposed on the bed 12 of 0, and the rail members 14a and 14b are provided with wheels 16a,
A moving bolster 18 having 16b is provided.

[0010] The moving bolster 18, which is in the form of a housing with both ends open, is provided with guide rails 20, 20 along the conveyance direction of the workpiece W at its lower part. Carts 22a to 22e are arranged on the guide rails 20, 20 at equal intervals and connected to each other by connection bars 24a to 24d. That is, as shown in FIG. 3, the truck 22a has wheels 26a and 26b that roll on guide rails 20 and 20, and a support member 28 is held on the wheels 26a and 26b.

The support member 28 is provided with a cylinder mechanism (driving member) 30, and a cylinder rod 32 of the cylinder mechanism 30 is engaged with a handling bar, which will be described later. As easily understood from FIG. 3, the guide rail 2
0, 20, etc. are provided on both sides of the moving bolster 18.

Lower molds 36a to 36d are fixed to the moving bolster 18 at equal intervals, while upper molds 38a to 38a are opposed to these lower molds 36a to 36d.
8d is fixed to a vertically movable slide 40 via an adapter plate 42. This lower mold 36a
To the left of the lower die 36d, there is provided a carry-in station 44 where the workpieces W are stacked, and to the right of the lower die 36d, a carry-out station 45 for carrying out the processed workpiece W is provided. The lower die 36a and the upper die 38a are drawing dies, the lower die 36b and the upper die 38b are trimming dies, and the lower die 36c and the upper die 38c are bending dies. 36d and upper mold 38d are piercing molds. The workpiece W is processed into a predetermined sheet metal product through a drawing process, a trimming process, a bending process, and a piercing process in sequence using these molds while being transported.

The lower molds 36 are arranged at equal intervals as described above.
Handling bars 46 are replaceably installed on the cylinder rods 32, 32 of the cylinder mechanisms 30, 30 for a to 36d, respectively, and suction discs 48, 48 are replaceably engaged with the handling bars 46.

The transfer press machine 10 as described above is provided with a drive mechanism 56 that sequentially moves the workpiece W among the loading station 44, the lower molds 36a to 36d, and the unloading station 45. This drive mechanism 56 includes a drive shaft 60 connected to a drive source (not shown),
A first bevel gear 62 attached to the tip meshes with a second bevel gear 64, and a driving side gear 66 and a driven side gear 70 that rotate around a shaft 68 are integrated with the second bevel gear 64. A gear 72 meshes between them, and a shaft 68
A cam 74 is pivotally attached to the cam 74 . A rotor 80 provided at a bent portion at one end of a lever 78 that is swingable about a shaft 76 is in sliding contact with the outer circumference of the cam 74 .

On the other hand, the trolley 22e further includes a connecting bar 8.
2 are connected, and this connection bar 82 is connected to a connection bar 86 via a connector 84, and the connection bar 86 is connected to the trolley 2.
It is connected to a pitch adjustment means 90 for adjusting the reciprocating movement distance of 2a to 22e. This pitch adjustment means 9
0 is connected to the other end of the lever 78.

The pitch adjustment means 90 includes a first slide table 92 and a second slide table 94 that are horizontally slidable along a guide rail 91, and a drive source installed on the first slide table 92. A pulse motor 96 is provided. A ball screw 102 supported via a bearing member 100 fixed to the first slide table 92 is connected to a rotating shaft 98 extending from the pulse motor 96, and a nut member 104 is connected to the ball screw 102. is screwed on. The nut member 104 is the second
It is fixed to a slide table 94, and this second slide table 94 is connected to the carriage 22a via the connection bar 86.

As shown in FIG. 2, a pair of carts 22
A handling bar 46 is installed between a to 22e,
A stay 106 for each handling bar 46
Suction discs 48, 48 serving as work holding means are attached via.

Next, the operation of the transfer press machine and workpiece conveyance device constructed as described above will be explained.

First, the general operation of the drive mechanism 56 will be explained. In FIG. 1, when a drive source (not shown) is driven and the drive shaft 60 rotates, the rotation direction of the drive shaft 60 is changed via the first bevel gear 62 and the second bevel gear 64, and further from the gear 66. The signal is transmitted to the gear 70 via the gear 72, and the cam 74 rotates about the shaft 68 as a fulcrum. As the cam 74 rotates, this cam 74
The lever 78 on which the rotor 80 is slidably in rolling contact swings, and the five sets of carts 22a to 22e, which are connected to the other end via the pitch adjustment means 90, are integrally connected to the guide rail 20, 20 via wheels 26a, 26b. During this time, the cylinder mechanism 30 is energized, and the cylinder rod 32 is displaced up and down in synchronization with the displacement operation of the drive mechanism 56. That is, as shown in FIG. 4, the suction disc 48 of the handling bar 46 installed on each of the carts 22a to 22e periodically moves the processed work W from the initial standby position A to the take-out position B.
It is possible to move along the trajectory shown in the figure to reach a delivery position C to one of the lower dies 36a to 36d where the next stage of processing is performed. During this time, the workpiece W is set on one of the lower molds 36a to 36d, and the suction disk 4
While the upper dies 8 and 48 are moving along the positions A to C, the upper dies 38a to 38d are lowered and predetermined processing steps are carried out, respectively.

In the present invention, the pitch adjustment means 90 changes the distance of the outward path of the suction plate 48 from the standby position A to the take-out position B, and the distance of the return path from the delivery position C to the standby position A after transferring the workpiece W. It is used when setting it shorter than . That is, when the lever 78 swings and the carts 22a to 22e on which the suction disks 48 are installed move forward and backward, this distance is adjusted by the pitch adjustment means 90 that connects the lever 78 and the carts 22a to 22e. This is being carried out by In other words, in FIG. 5, when the carts 22a to 22e move in the direction of the arrow X to pick up the work W, the pulse motor 96 is driven, and the ball screw 102 at the tip of the rotating shaft 98 rotates. by ball screw 10
The carts 22a to 22e connected to a second slide table 94 integral with the second slide table 94 are relatively displaced by a distance corresponding to the number of rotations of the pulse motor 96 in the direction of arrow Y, which is opposite to the direction of movement thereof.

On the other hand, after the conveyance of the workpiece W is completed, the carts 22a to 22e similarly move along the arrow X in order to return to their original positions.
When moving in the direction, the pulse motor 96 rotates in the opposite direction in the pitch adjustment means 90, and as a result, the relative moving distance of the carts 22a to 22e increases, and as a result, the suction disk 48 as shown in FIG.
The distance of the outbound and return trips can be adjusted.

Next, the case where the suction disk 48 is replaced according to the type, shape, etc. of the workpiece W will be explained.

First, by loosening the connector 84, the connection between the connecting bars 82 and 86 is released. In this state, the cylinder mechanism 30 is driven, the cylinder rod 32 is lowered, and the moving bolster 18 is pulled out in a direction perpendicular to the transport direction of the workpiece W. That is, the wheels 16a are placed along the rail members 14a, 14b.
, 16b are rolled, and the moving bolster 18 held by the wheels 16a, 16b is pulled out from the production line. Next, on this pulled out moving bolster 18, the handling bar 46 is removed from the cylinder rod 32 and a new handling bar 46 equipped with the desired suction disk 48 is attached to the cylinder rod 32, or the handling bar 46 is attached to the cylinder rod 32. bar 4
6 is held, the suction plate 4 of the handling bar 46 is
After replacing only the suction disk 8 with a new suction disk 48, the moving bolster 18 is returned to the production line.

As can be understood from the above embodiments, especially when replacing the suction disc 48, the handling bar 46
There is no need for a support device or the like to support the. Furthermore, since the moving bolster 18 can be easily taken out along the rail members 14a, 14b, replacement work is facilitated. Moreover, it is easy to handle and the mechanism itself can be simplified.

Next, a workpiece conveying device according to a second embodiment of the present invention will be explained with reference to FIG. Note that the same reference numerals as in the first embodiment shown in FIG. 1 indicate the same components, and detailed explanation thereof will be omitted.

In this second embodiment, the cylinder rods 32 extending upward from the cylinder mechanisms 30 arranged in the transport direction of the workpiece W are integrally fixed to each other via a rod-shaped connecting member 110. . Therefore, when the handling bar 46 is moved left and right via the drive mechanism 56 while moving up and down under the action of the cylinder mechanism 30, it is possible to effectively prevent the handling bar 46 from vibrating integrally with the cylinder rod 32. Therefore, in particular, the transport work of the workpiece W can be easily sped up, and the overall efficiency of the molding process for the workpiece W can be improved.

Next, a work conveyance device according to a third embodiment of the present invention will be explained with reference to FIGS. 7 and 8. Note that the same reference numerals as in the first embodiment indicate the same components, and detailed explanation thereof will be omitted.

In this case, in the third embodiment, a column 120 is fixed on the moving bolster 18, and the column 120 is fixed on the moving bolster 18.
Guide rails 122a and 122b are supported at the upper ends of the guide rails 122a and 122b. These guide rails 122a, 122b are hollow and open at the lower end.
, 122b, a plurality of trolleys 126a, 126b are supported via wheels 124a, 124b that roll within them. Cylinder mechanisms (driving members) 128a, 128b are attached to each of the trolleys 126a, 126b, pointing downward, and a handling bar 46 is exchangeably attached to cylinder rods 130a, 130b extending downward from the cylinder mechanisms 128a, 128b. and each cylinder rod 130
a and 130b are connecting members 132a and 13
They are integrally fixed via 2b.

Therefore, the third embodiment has the same effects as the first and second embodiments described above, and
In particular, since the workpiece conveyance device is arranged above the moving bolster 18, there is an advantage that a space can be secured above the moving bolster 18.

[0030]

[Effects of the Invention] According to the workpiece conveyance device for a transfer press machine according to the present invention, the following effects can be obtained.

[0031] A handling bar equipped with a suction plate is installed on the trolley via a drive member that can be raised and lowered, and
This truck is configured to move on a moving bolster. As a result, especially when replacing the suction disk,
The supporting device for the handling bar that was required in the past is no longer required, and the moving bolster can be easily removed from the workpiece conveyance device, making suction plate replacement easier and more efficient. can be done. Furthermore, the mechanism itself can be simplified and the ease of handling can be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a transfer press machine incorporating a work transfer device according to a first embodiment of the present invention.

FIG. 2 is an explanatory plan view of the transfer press machine.

FIG. 3 is a partially longitudinal side view of the transfer press machine.

FIG. 4 is an explanatory diagram schematically showing a displacement operation of a suction disk of the transfer press machine.

FIG. 5 is an explanatory diagram schematically showing a displacement operation of a suction disk of the transfer press machine.

FIG. 6 is a schematic front view of a transfer press machine incorporating a work transfer device according to a second embodiment of the present invention.

FIG. 7 is a perspective explanatory view of a workpiece conveyance device according to a third embodiment of the present invention.

FIG. 8 is an explanatory partial plan view of a transfer press machine incorporating the workpiece conveyance device according to the third embodiment.

[Explanation of symbols]

10...Transfer press machine 18...Moving bolster 22a to 22e...Dolly 36a-36d...lower mold 38a-38d...upper mold 44... Loading station 45...Export station 46...Handling bar 48...Suction board 90...Pitch adjustment means 96...Pulse motor 102...Ball screw 110...Connection member 122a, 122b...Guide rail 126a, 126b...Dolly 128a, 128b...Cylinder mechanism 132a, 132b...Connecting member

Claims (6)

[Claims] [Claim 1] In a transfer press machine that molds a workpiece made of a thin plate member by sequentially transporting it to a plurality of molds arranged in a linear manner, the workpiece is placed on a moving bolster along the transporting direction. The mold is disposed, the moving bolster has a guide rail extending in the workpiece transport direction, a truck is provided so as to be displaceable along the guide rail, and a drive member is disposed on the truck in a vertical direction. 1. A workpiece conveyance device for a transfer press machine, characterized in that a handling bar is provided as a bridge between the driving member and a suction disc is replaceably provided on the handling bar. 2. The transfer device according to claim 1, wherein a plurality of carts are supported by the guide rail, and each drive member provided on the carts is integrally fixed to each other by a connecting member. Workpiece conveyance device in a press machine. 3. The apparatus according to claim 2, wherein the drive member has a cylinder mechanism, and the cylinder rods of the cylinder mechanism are integrally fixed to each other by a connecting member. Device. 4. A workpiece conveyance device for a transfer press machine according to claim 1 or 2, wherein the moving bolster is replaceably bridged to the drive member. 5. The apparatus according to claim 1, wherein the moving bolster is configured to be movable integrally with the cart in a direction perpendicular to the conveyance direction of the workpiece. Conveyance device. 6. The workpiece conveyance device for a transfer press machine according to claim 1, wherein the drive member is configured to expand and contract in the vertical direction in synchronization with the displacement operation of the truck.