JPH08243662A - Device for piling up press-formed products - Google Patents

Abstract

PURPOSE: To carry-out press-formed products formed with the transfer press machine from a press machine in the condition of piling up. CONSTITUTION: A work receiving table 51 arranged at the last stage of the transfer press machine 10 and a cylinder 53 for elevating the work receiving table 51 are provided, and the press-formed products 20' are piled up on the work receiving table 52 and also, the piled up press-formed products 20' are carried out from the press machine 10 by utilizing a feed function of the transfer press machine 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for stacking press-formed products formed by a transfer press machine.

[0002]

2. Description of the Related Art As shown in FIG. 8, conventionally, a panel 2 which is a press-molded product delivered from a transfer press machine 1 is conveyed by a conveyor 3 to a terminal workbench 4, where a worker 5 After stacking an appropriate number of panels 2 by another worker, another operator 6 stacks the stacked panels 2 on the pallet 7.

Since the panels 2 are unloaded one after another from the transfer press machine 1 in a short cycle, the worker 5 is obliged to concentrate on the stacking work of the panels 2, and therefore, the panels 2 on the pallet 7 are inevitable. It is practically impossible for the worker 5 to handle the loading work.

[0004]

As described above, since the unloading cycle of the panel 2 to the conveyor 3 is short, the operator 5 is forced to make a great deal of effort. In addition, the pallet 7 has a panel 2
It is not desirable from the viewpoint of labor saving that two workers are required to mount the device.

In view of the above situation, an object of the present invention is to provide a stacking apparatus for press-formed products which allows the press-formed products formed by the transfer press machine to be stacked and carried out from the press machine. .

[0006]

SUMMARY OF THE INVENTION The present invention is an apparatus for stacking press-formed products formed by a transfer press machine, which is a work cradle arranged at the final stage of the transfer press machine, and the work cradle. An elevating means for intermittently ascending and descending between a first position and a second position above the first position, wherein the first position is the stage immediately preceding the final stage. The press-molded products supplied from the above are set to a height at which they can be sequentially stacked and placed on the work cradle, and the second position is the bottom-stage molded product of the press-molded products stacked on the work cradle. It is characterized in that the height is set so that the lift force of the transfer press machine can be applied.

[0007]

When the work cradle is in the first position, the press-formed products are sequentially stacked and placed on the work cradle. Then, when the work cradle is raised to the second position, the entire press-formed product stacked on the work cradle is carried out by the transfer press machine.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a transfer press machine 10 includes a vertical three-dimensional motion (clamp, lift,
A pair of feed bars 11 for performing advance, down, unclamp and return) are provided, and the molding material 20 is sequentially transferred to the first to fifth stages shown in FIG. The molding material 20 is subjected to predetermined press working by a mold (not shown) provided on the fourth stage.

Incidentally, in the first to fourth stages, for example, the processing shown in parentheses is carried out. Also,
Fingers 12-1 to 12-5 corresponding to the first to fifth stages are attached to the feed bar 11, respectively.

The conveyer 30 arranged on the downstream side of the transfer press machine 10 conveys the press-formed product processed by the press machine 10 to the terminal workbench 40 shown in FIG. It has two conveyor belts 31 parallel to each other along the feed direction of 11.

On the fifth stage of the transfer press machine 10, the work stacking mechanism 50 according to the present invention is arranged. As shown in FIG. 3, the work stacking mechanism 50 includes a work cradle 51 and a movable frame 5 that supports the cradle 51.
2 and a cylinder 53 for moving the movable frame 52 up and down.

The work pedestal 51 has guide bars 53 projecting from the four corners of its upper surface, and pin holes 54 formed in its front and rear ends, respectively. As shown in FIG. 1, the work pedestal 51 is placed on the upper surface of the movable frame 52 so as to be superposed on each other.
Each of the pins 55 is fitted into and positioned with respect to the movable frame 52.

FIG. 4 shows a system for controlling the cylinder 53. In the figure, the rotary cam switch 6
0 outputs the operation timing signal of the transfer press machine 10. Further, the work detection sensor 61
Is a limit switch for detecting a press-formed product transferred to the fifth stage of the transfer press machine 10, and is transferred to the fifth stage by the advance motion of the feed bar 11 as shown in FIG. 6 (a), for example. The press-formed product 20 ′ thus arranged is arranged so as to be detected above the pedestal 51.

The control unit 64 includes a rotary cam switch 6
0 and the output of the work detection sensor 61.
The cylinder control procedure illustrated in FIG. It should be noted that this control procedure is executed starting from the state where the feed bar 11 has completed the return motion.

In this procedure, first, the work stacking number counter 63 shown in FIG. 4 is reset, and the solenoid valve 65 is switched to retract the cylinder 53 (step 100). With the contraction of the cylinder 53, the work holder 51 can stack and arrange the press-formed products 20 'transferred to the fifth stage up to the descending end height H1 shown in FIG. 6A. Position (first position)
Will rise to.

Next, the rotary cam switch 50
It is determined whether the feed bar 11 shown in FIG. 1 has completed the advanced motion or not based on the output of (step 101). Then, the determination result of step 101 is N
In the case of O, the procedure is returned to step 101, and in the case of the determination result being YES, the work detection sensor 6
It is determined whether 1 is turned on (step 102).

Now, as shown by the solid line in FIG.
The press-formed product 20 'that has been processed is the feed bar 1 described above.
If it is transferred to above the work cradle 51 by the advance motion 1 of FIG.
Is turned on and the determination result of step 102 is YES.

In this case, the control unit 64 sends the ON signal of the work detection sensor 61 to the work stack number counter 63.
To the counter 63 and increment the count value n of the counter 63 by 1 (step 103). Since the counter 63 has been reset in advance in step 100, the count value n becomes 1 by the increment processing.

After the advance motion, the feed bar 11 descends to the position indicated by the broken line in FIG. 6 (a) by the down motion, and subsequently performs the unclamp motion. The press-formed product 20 ′ held by the finger 12-4 is released from the finger 12-4 by this unclamping motion and descends to the guide bar 5.
It is placed on the work receiving table 51 while being guided by 3. That is, the first press-formed product 20 ′ is placed on the work receiving table 51.

At the next step 104, it is judged whether or not the number of stacked sheets n reaches a preset number K (three sheets in this embodiment), but the current number of stacked sheets n counted by the counter 63 is 1. If so, the procedure returns to step 101.

When the count value n of the counter 63 becomes K (3 sheets) by repeating the procedure of steps 101 to 103, that is, when the result of the determination at step 102 is YES, the output of the rotary cam switch 60 is determined based on the output. It is determined whether or not the unclamp motion of the feed bar 11 is completed (step 105).

When the end of the unclamp motion is determined in step 105, the solenoid valve 65 is switched to operate to extend the cylinder 53 (step 106).
As a result, the work pedestal 51 rises to the ascending end height H2 (second position) shown in FIG. 6B.

As a result, the lowermost molded product 20 'of the press-molded products 20' stacked on the work pedestal 51.
Is the feed bar 1 before the start of the clamp motion
It is located slightly above the height of the finger 12-5 of 1 (see the solid line). The extension operation of the cylinder 53 ends during the return motion of the feed bar 11.

The feed bar 11 is sequentially moved to the position indicated by the broken line in FIG. 6B by the clamp motion and the lift motion which are executed subsequent to the return motion, and as a result, the K stacked on the work pedestal 51 is stacked. The press-formed product 20 ′ is picked up by the fingers 12-5 and lifted together with the feed bar 11.

The K press-formed products 20 'placed on the fingers 12-5 are transferred to above the conveyor 30 by the advance motion of the feed bar 11 and then by the down motion of the feed bar 11. As shown in FIG. 1, it is placed on the conveying surface of the conveyor 30, and thereafter conveyed by the conveyor 30 toward the terminal workbench 40 shown in FIG.

After extending the cylinder 53, the control unit 64 determines whether the feed bar 11 has started the advanced motion based on the output of the rotary cam switch 60 (step 107), and the determination result. If YES, the procedure returns to step 100.

After that, the same procedure as described above is repeatedly executed, so that the stacked press-formed products 20 'are successively supplied to the terminal workbench 40 by the conveyor 30. The work of stacking the press-formed products 20 'at 40 is unnecessary. Therefore, according to this embodiment, it is possible to eliminate an operator who stacks the press-formed products 20 ', that is, to save labor.

As is clear from the above description, the cylinder 53, the rotary cam switch 60, the work detection sensor 61, the counter 63, the control section 63 and the solenoid valve 65.
Serves as an elevating means for elevating and lowering the pedestal 51 each time a prescribed number K of press-formed products 20 'are stacked on the work pedestal 51, that is, as an elevating means for intermittently elevating the pedestal 51. .

In the above-described embodiment, the work receiving base 51 is detachably attached to the movable frame 52.
This is to correspond to press-formed products 20 'of various shapes and sizes. That is, a plurality of work pedestals 51 are prepared in advance according to the shape and size of the press-formed product 20 ′, and these are selectively mounted on the movable frame 52 using the pin holes 52 and the pins 55. In the above embodiment, the number of stacked press-formed products 20 'is counted by the counter 6.
Although it is controlled by the count value of 3, it is also possible to provide an appropriate sensor for detecting the stacking height of the press-molded products 20 'on the work cradle 51 and manage the stacking number by this sensor.

Further, in the above embodiment, the descending height H1 shown in FIG. 6A is fixedly set, but this descending height H1 is changed according to the number of stacked press-formed products 20 '. May be.

That is, as shown in FIG. 7, when the first press-formed product 20 'is placed, the work table 51 is positioned at a lower height than that in the case of FIG. 6 (a). H
1-1 is set, and thereafter, each time the number of stacked sheets is increased by one, the position of the work stand 51 is lowered by the vertical width of the press-formed product 20 ', and the descending heights H1-2, H1-3, ... May be sequentially set.

In this way, the descending distance of the press-formed product 20 'with respect to the work receiving base 51 can be shortened as much as possible,
It is possible to reduce noise and the like when the press-formed product 20 'is placed.

The press-formed product 20 'according to the embodiment.
Is drawn as a flat plate to avoid complication of the drawing, but actually has a partially curved shape. Therefore,
A gap resulting from the curved shape is formed between the press-formed products 20 ′ stacked on the work pedestal 51.

[0034]

According to the present invention, the press-formed products formed by the transfer press machine can be stacked, and the stacked press-formed products can be carried out by using the feed function of the transfer press machine. No need to stack press-formed products. Therefore, it is possible to eliminate workers who perform stacking work of press-formed products, that is, to save labor.

[Brief description of drawings]

FIG. 1 is a perspective view conceptually showing an embodiment of the present invention.

FIG. 2 is a plan view conceptually showing the structure of a feed bar of the transfer press machine.

FIG. 3 is a perspective view illustrating the configuration of a work stacking machine.

FIG. 4 is a block diagram illustrating a control system of a cylinder.

FIG. 5 is a flowchart illustrating a cylinder control procedure.

FIG. 6 is a conceptual diagram showing the operation of the embodiment.

FIG. 7 is a conceptual diagram showing another manner of setting the descending height of the work cradle.

FIG. 8 is a conceptual diagram showing a mode of stacking work of press-formed products in the related art.

[Explanation of symbols]

 10 Transfer Press Machine 11 Feed Bar 12-1 to 12-5 Finger 20 Molding Material 20 'Press Molded Product 30 Conveyor 51 Work Stand 52 Movable Frame 53 Cylinder 60 Rotary Cam Switch 61 Work Detection Sensor 63 Work Stack Number Counter 64 Control Unit 65 solenoid valve

Claims (1)

[Claims] 1. A device for stacking press-formed products formed by a transfer press machine, comprising: a work cradle (51) arranged at a final stage of the transfer press machine (10); and a work cradle. Elevating means (53, 60, 61, 63, 6) for elevating and lowering intermittently between the first position (H1) and the second position (H2) above the first position (H1).
4, 65), and the first position (H1) sequentially stacks the press-formed products (20 ′) supplied from the stage immediately before the final stage on the work table (51). It is set to a height at which it can be placed, and the second position (H2) is set to
A stacking device for press-formed products, characterized in that the press-formed products (20 ') stacked in 1) are set to a height such that the lift force of the transfer press machine (10) can be applied to the lowest-stage formed product. .