JPH0321781Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a device that is placed between two transfer press machines and that transports a workpiece from one transfer press machine to the other transfer press machine. The present invention relates to an apparatus that can be used when press working is performed by arranging transfer press machines in tandem.

[Background technology and its problems]

Transfer press machines can press workpieces in multiple stages using the feed bar's workpiece conveyance operation, so they can produce finished products by themselves, but for workpieces that require many press processes, a single transfer press is required. Since machines are not enough, it is necessary to increase the number of press processes by arranging two transfer press machines in tandem. As described above, depending on the pressed product, one transfer press machine may be used alone, or two transfer press machines may be used in combination.

When using them in conjunction after using them individually, adjust the electric circuits that drive the slides and feed bars of both transfer press machines, and set the vertical movement timing of each slide and the workpiece transfer timing of the feed bar to be the same. Must. Therefore, in the past, changing from single use to connected use of transfer press machines required troublesome work, and such a change was rarely implemented.

[Purpose of invention]

The purpose of this invention is to eliminate the need to match the vertical movement timing of the slides of both transfer press machines and the workpiece transfer timing of the feed bar when using transfer press machines in conjunction.
Therefore, to provide a work transfer device for a transfer press machine, which eliminates the need for troublesome adjustment work of electric circuits that drive slides and feed bars, and allows the transfer press machine to be used alone or in combination with ease. It's there.

[Means and actions for solving problems]

In order to achieve the above object, the present invention provides a device that is disposed between a first and a second transfer press machine, and is a device that conveys transfer presses one by one by the feed bar of the first transfer press machine. The machine is equipped with a work accumulation means for accumulating and storing a large number of works that have been carried out, and the works are transferred one by one from this work accumulation means to the feed bar of the second transfer press machine. .

That is, in the apparatus according to the present invention, the workpiece is not continuously transferred from the first transfer press machine to the second transfer press machine, but the workpiece is transferred from the first transfer press machine. are accumulated and stored in the workpiece storage means, and after this, the workpieces are transferred from the workpiece storage means to the second workpiece storage means.
It will be transported to a transfer press machine. This eliminates the need to move the slides of both transfer press machines up and down at the same timing, and also eliminates the need to operate the feed bars to transport the workpiece at the same timing.

Examples of the workpiece storage means include a stack device disposed on the side of the first transfer press machine for receiving the workpieces from the feedbar of the first transfer press machine, and a stacking device disposed on the side of the first transfer press machine for receiving the workpieces from the feedbar of the second transfer press machine, and a stacking device for receiving the workpieces from the feedbar of the second transfer press machine. It consists of a stacking device disposed on the side of the second transfer press machine for transfer, and a pallet that moves between the stacking device and the stacking device in order to send the workpieces stored in the stacking device to the stacking device. A large number of workpieces are accumulated and stored in stacking devices, stacking devices, and pallets.

〔Example〕

FIG. 1 is a plan view showing the arrangement of two transfer press machines including a conveying device according to this embodiment.
FIG. 2 is a perspective view of the conveyance device. These figures show the case where the transfer press machines are arranged in tandem and used in conjunction.

In FIG. 1, a conveying device 3 is arranged between a first transfer press machine 1 and a second transfer press machine 2, and on the left side of the first transfer press machine 1, a first transfer press A stacking device 4 for supplying workpieces to the machine 1 is provided, and on the right side of the second transfer press machine 2 a stacking device 5 for receiving finished products sent from the second transfer press machine 2 is provided.
First and second transfer press machines 1, 2
are each equipped with two feed bars 6 and 7, and the workpiece is transported by repeating the operations of the feed bars 6 and 7 approaching, raising, advancing, and descending for clamping the workpiece, and separating and retreating for unclamping the workpiece. . When the first and second transfer press machines 1 and 2 are used in conjunction,
In FIG. 1, the workpiece conveyance direction is from left to right in the first and second transfer press machines 1 and 2, so that the feed bars 6 and 7 move forward from the left to the right.

The conveying device 3 is the first transfer press machine 1
A stack device 8 disposed on the side, a de-stack device 9 disposed on the second transfer press machine 2 side, a pallet table 10, and a pallet whose upper surface is moved by a drive device (not shown). 11, and after the pallet 11 is moved from the stacking device 8 to the disk stacking device 9, it is circulated in the direction of the arrow in FIG. As shown in FIG. 2, a large number of works 12 are stored in the stack device 8, disk stack device 9, and pallet 11, and the stack device 8, disk stack device 9, and pallet 11 constitute a work storage means 13. Palette 1
There are multiple 1's, and each palette 11 is the base 1.
A plurality of arms 16 are attached to two pillars 15 erected in 4.
are arranged at equal intervals above and below.

The stack device 8 has chains 17 arranged front and rear, left and right, and each chain 17 is connected to an upper and lower sprocket 18, and a servo motor is transmitted through a drive force transmission path 19 composed of a bevel gear or the like. Chain 1 due to the driving force of 20
7 runs in a circular manner. As shown in FIG. 3, the running direction of the chain 17 is the direction in which the opposing inner parts 17A of the left and right chains 17 move downward. Locking members 21 are fixed to each chain 17 at equal pitches t, and the pitches t are the same as the vertical spacing of the arms 16 of the pallet 11.

As shown in FIG. 2, a cylinder 22 is arranged horizontally on the front side of the chain 17, and a plate-shaped extrusion member 23 is attached to the tip of a piston rod 22A of the cylinder 22. It reciprocates in the front and back direction between the left and right chains 17 while being guided by. These cylinders 22, extrusion members 23, etc. constitute an extrusion means 25 for extruding the work 12 from the stacking device 8 side to the pallet 11 side.

The disk stack device 9 has the same structure as the stack device 8, and the disk stack device 9 has front and rear,
The chain 26 is provided with chains 26 arranged on the left and right sides, and each chain 26, which is stretched between the upper and lower sprockets 27, is intermittently circulated by the driving force of the servo motor 29 transmitted through the driving force transmission path 28. The running direction of the chain 26 is opposite to that of the chain 17 of the stack device 8, and the opposing inner parts of the left and right chains 26 run upward.
As shown in FIG. 4, locking members 30 are fixed to each chain 26 at equal pitches, and this pitch is the same as the pitch t of the locking members 21 of the chain 17.

A cylinder 31 is arranged horizontally on the front side of the chain 26, and a piston rod 31 of the cylinder 31 is arranged horizontally on the front side of the chain 26.
A hook member 32 is provided at the tip of A. A moving rod 33 is provided on the back side of the chain 26, and the moving rod 33 is horizontally attached to connecting members 36 and 37 at both ends of a guide rod 35 that can move back and forth while being guided by a guide member 34. A piston rod 3 is attached to the tip of the moving rod 33.
A hook member 38 is attached which engages and separates from the hook member 32 of 1A.

A spring 39 is provided between the guide member 34 and the connecting member 36 and wound around the outer periphery of the guide rod 35. Further, the upper end of a plate-shaped retracting member 40 is connected to the moving rod 33, and as shown in FIG.
0 is smaller than the interval between the two pillars 15 of the pallet 11, and the retracting member 40 is connected to the moving rod 33.
The retracting member 40 is designed to be able to pass between these two pillars 15 when moving in unison with the two pillars 15. Also, as shown in Fig. 4, the moving rod 33 and the pallet 1
A distance h larger than the pitch t is provided between the workpiece 12 and the workpiece 12 stored in the uppermost stage.

The cylinder 31, moving rod 33, pulling member 40, etc. described above constitute a pulling means 41 for pulling the work 12 from the pallet 11 side to the disk stacking device 9 side.

Next, we will discuss the effect.

In FIG. 1, a workpiece 1 is supplied from a disk stacking device 4 to a first transfer press machine 1.
2 is sequentially sent to each stage of the first transfer press machine 1 by the above-mentioned work transfer operation of the feed bar 6, and is pressed by the vertical movement of the slide at each stage. After the press processing at the final stage of the first transfer press machine 1 is completed, the workpiece 12 is moved to the feed bar 6.
is transported above the stacking device 8 by the advancement of the
When the two feed bars 6 perform separation operation for workpiece unclamping, the workpiece 12 is moved to the chain 1.
It is placed on the uppermost level locking member 21 of No.7.

When the workpiece 12 is placed on the locking member 21, the inner part 17A of the chain 17 is pitched by the servo motor 20.
It moves intermittently downward. This intermittent running is performed each time one workpiece 12 is sent to the stacking device 8, and the stacking device 8 has a plurality of works 12.
are stored consecutively above and below. When the number of consecutively stored works 12 reaches the number that can be stored in the pallet 11 (six pieces in the illustrated example), the chain 1 is moved as shown in Fig. 3.
7 is made to travel _N1 times the pitch t by one intermittent travel. Thereafter, the chain 17 travels intermittently by pitches t until the same number of works 12 as the number of consecutively stored works 12 is accumulated, and thereafter the same operation is repeated.

As the chain 17 runs, the number of consecutive pieces of work 12 that can be stored in the pallet 11 is determined by the extrusion means 25.
When the extrusion member 23 is lowered to the height position of the extrusion member 23, the extrusion member 23 is moved forward by the operation of the cylinder 22, whereby the plurality of works 12 are pushed out from the stacking device 8 and are placed on standby facing the stacking device 8 in the front and back direction. It is placed on the arm 16 of the empty pallet 11. After this, the push-out member 23 retreats and returns to its original position.

Even if the chain 17 runs intermittently while the pushing member 23 is moving forward and backward in this manner, the pushing member 23 is stored in the stack device 8 by running the chain 17 N1 _times the pitch t. There is no interference with the workpiece 12 at the lowest stage, so the operating speed of the cylinder 22 may be slow.

The pallet 11 that has received the work 12 from the stacking device 8 is moved on the pallet table 10 to the disk stacking device 9 side.

In the disk stack device 9, the piston rod 31A of the cylinder 31 constituting the retracting means 41 moves forward, and the hook member 32 engages with the hook member 38 of the moving rod 33. Next, the piston rod 31
A moves backward and the moving rod 33 moves forward while compressing the spring 39. As a result of this movement, all the works 12 placed on the arm 16 of the pallet 11 are pushed forward by the pulling member 40 and transferred to the locking member 30 of the chain 26.

In this case, even if the chain 26 starts to travel intermittently at pitch t when the leading end of the work 12 is placed on the locking member 30, the distance between the moving rod 33 and the uppermost work 12 is larger than the pitch t. Since the interval h is provided, the uppermost workpiece 12 that rises together with the locking member 30 of the chain 26 does not come into contact with the moving rod 33. Therefore, the operating speed of the cylinder 31 may be slow.

After the work 12 is transferred from the pallet 11 to the disk stack device 9 as described above, the engagement between the hook members 32 and 38 is released, and the moving rod 33 is moved backward by the elastic force of the compressed spring 39. . The intermittent running of the chain 26 is not performed when the moving rod 33 moves forward, and the moving rod 3
3, the uppermost workpiece 12, which rises together with the locking member 30 of the chain 26, will not come into contact with the moving rod 30 because of the interval h, as described above.

The pallet 11, which has been emptied by the transfer of the workpieces to the stacking device 9, moves in the direction of the arrow in FIG. The next pallet 11 containing the workpiece 12 is sent to a position facing the disk stacking device 9 in the front and back direction, and this pallet 11
is the data stack device 9 by the next retraction means 41.
Wait for the work to be pulled in.

The workpiece 12 placed on the horizontal uppermost locking member 30 of the chain 26 constituting the disk stacking device 9 is attracted by the suction portion 43 of the vertically movable pick-up means 42 shown in FIG.
is transferred to two adjacent feed bars 7 for work clamping of the second transfer press machine 2. The work 12 delivered to the feed bar 7 is sent to each stage of the second transfer press machine 2 by the aforementioned work transfer operation of the feed bar 7, and after becoming a finished product at the final stage, it is transferred to the stacking device shown in Fig. 1. 5.

The work is transferred from the disk stack device 9 to the feed bar 7 of the second transfer press machine 2 when the chain 26 of the disk stack device 9 is pitched.
This is performed each time the transfer press machine 2 travels intermittently, whereby the workpieces 12 are supplied to the second transfer press machine 2 one by one. Further, at the bottom of the chain 26, a plurality of locking members 30 on which no workpieces 12 are placed are formed at a continuous height by intermittent running at intervals of pitch t, and as shown in FIG. When the guide rod 35 and the movable rod 33 that can accommodate a plurality of works 12 and move forward reach a height (N ₂ times the pitch t) at which they do not interfere with the lowest work 12 in the disk stack device 9, the retracting means 41, the next workpiece retraction operation is performed, and the same operation is repeated thereafter.

Note that due to the intermittent running of the chain 26, the workpiece 1
When the locking member 30 on which the transfer press 2 is not placed reaches the uppermost stage, the feed bar 7 is operated to convey the empty work, and the second transfer press machine 2 is operated in a so-called toothless operation.

As described above, the conveyance device 3 includes a work storage means 13 consisting of a stack device 8, a disk stack device 9, and a pallet 11 that can store and store a large number of works 12.
After the work 12 sent from the first transfer press machine 1 is accumulated in this work accumulation means 13, the work 12 is supplied to the second transfer press machine 2. 1
and the vertical movement timing of the slides of the second transfer press machines 1 and 2 and the feed bars 6 and 7.
Pressing can be performed by the first and second transfer press machines 1 and 2 even if the workpiece transfer timings of the two transfer press machines 1 and 2 do not match.

In addition, in order to prevent workpieces exceeding the workpiece storage capacity from being stored in the workpiece storage means 13, a second
The pressing speed of the first transfer press machine 2 is made faster than the pressing speed of the first transfer press machine 1. This adjustment work can be performed more easily than the work of matching the vertical movement timings of the slides of the first and second transfer press machines 1 and 2. When a workpiece is not supplied to the second transfer press machine 2 due to a difference in press working speed, the second transfer press machine 2 is operated in a toothless operation.

The above is a case where the first and second transfer press machines 1 and 2 are used in conjunction, but when these transfer press machines 1 and 2 are used individually, the first transfer press machine 1 The forward direction of the feed bar 6 of the second transfer press machine 2 is the same as in the case of connected use, the forward direction of the feed bar 7 of the second transfer press machine 2 is the opposite direction to that in the case of connected use, and the stack device 8 and the de-stack device 9 are separated. Alternatively, only the stacking device 9 can be replaced with a stacking device similar to the stacking device 8, and the pallet table 10 can be replaced with a finished product manufactured by the first and second transfer press machines 1 and 2. Use as a table for storing pallets.

In the above embodiment, the workpiece storage means 13 was composed of the stacking device 8, the disk stacking device 9, and the pallet 11, but the workpiece storage means is not limited to this and may be any other type of workpiece storage means. Any device may be used as long as it can accumulate and store a large number of works 12 fed one by one by one feed bar 6 and can transfer the works one by one to the feed bar of the second transfer press machine 2.

[Effect of idea]

According to the present invention, when transfer press machines are used in conjunction, the troublesome electrical circuit adjustment work to match the vertical movement timing of the slides of both transfer press machines and the workpiece conveyance timing of the feed bar is no longer necessary. As a result, work efficiency is improved, and the transfer press machine can be easily used alone or in combination.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the state in which the first and second transfer press machines including the conveyance device according to the present embodiment are connected and used, FIG. 2 is a perspective view showing the basic structure of the conveyance device, and FIG. A front view of the stacking device, FIG. 4 is a sectional view taken along the line -- in FIG. 2. 1...first transfer press machine, 2...
2nd transfer press machine, 3... Conveyance device, 6, 7... Feed bar, 8... Stacking device, 9... Distack device, 10... Pallet table, 11... Pallet, 12... Work,
13... Work accumulation means, 25... Extrusion means, 4
1... Pull-in means, 42... Pick-up means.

Claims (1)

[Claims for Utility Model Registration] A workpiece conveyance device disposed between a first and second transfer press machine, the workpiece conveyance device being disposed on the side of the first transfer press machine,
A stack device to which works are supplied from this transfer press machine, a disk stack device arranged on the side of a second transfer press machine and which supplies the works to this transfer press machine, and these stack devices and disk stack devices. a pallet that moves between the workpieces, a pushing means that pushes out the plurality of works that have been supplied to the stacking device and stored in the stacking device and transfers them to the pallet; The stacking device includes a pulling means for drawing and transferring the plurality of works from the pallet to the disk stacking device, and the stacking device includes a chain that circulates intermittently in the vertical direction, and a plurality of workpieces provided on the chain at equal pitches vertically. , a locking member on which the workpieces are placed and locked, and the extrusion means horizontally penetrates the interior of the stacking device to hold and hold the plurality of workspieces on the locking member. The disk stacking device has a pushing member for simultaneously pushing out the workpieces onto the pallet; has a locking member that is the same as the pitch, and the retracting means is movable in the horizontal direction upward from the uppermost workpiece stored in the pallet at a distance larger than the pitch. The movable rod is placed, and the movable rod is fixed to hang down from the movable rod.
a pulling member capable of simultaneously pulling and placing a plurality of works stored on the pallet on the locking member of the disk stacking device by horizontal movement of the moving rod; and a hook member provided at the tip of the moving rod. , which is disposed on the opposite side of the disk stack device from the movable rod, horizontally penetrates the inside of the disk stack device and engages with the hook member, and horizontally moves in the opposite direction to close the movable rod and the retractable rod. a hook member for moving a member from the pallet toward the stacking device, and the extrusion member of the extrusion means pushes out the work from the stacking device to the pallet when the chain of the stacking device A workpiece transfer device between transfer press machines, characterized in that the work is carried out after intermittently traveling the pitch by the number of works that can be accumulated and stored on a pallet, and then traveling a length multiple times the length of the pitch at once. .