JPS6232662Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a press processing device.

In press processing equipment, when feeding a plate into a press mold by gripping the rear end of the plate, if the plate itself is large and heavy, the tip will bend downward due to its own weight, causing the lower die to bend. It may hit the side of the recess, making it impossible to feed the board smoothly.

Therefore, in the past, it has been common practice to separately attach a guide device to the press processing machine to guide the plate material upward in the press mold in order to solve the above problem (for example, see Utility Model Application Publication No. 160610/1983). However, the addition of the above-mentioned guide device makes the press working equipment expensive, and there are problems in that the above-mentioned guide device may not be able to be incorporated into the press working equipment depending on the size, shape, etc. of the press die. Ta.

In view of this, the present invention performs pressing of the preceding plate material between the female die surface of the lower die and the male die surface of the upper die, and at the same time presses the blank holder on the plate material loading side and the lower die blank holder section. To provide a press working device which prevents the tip of the trailing plate from being bent downward when the trailing plate is fed to the female die surface by bending the tip of the trailing plate into a warped shape. It is something.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

1 is a press processing device, 2 is a plate material, 3 is a pallet loaded with the plate material 2, 4 is a roll feeder, 5 is a conveyor equipped with a suction cup 6 for conveying the plate material 2 from the pallet 3 to the roll feeder 4, 7 is a roll feeder 4
A table lifter 8 receives the plate material 2 sent out from the table lifter 7.
This is a loader that supplies the press processing equipment 1 to the press processing apparatus 1.

In the press processing apparatus 1, 11 is an upper die;
12 is a lower mold. The upper die 11 includes a male die 13 having a male die surface 13a, a male die holder 14, an upper plate 15, and blanks on a plate material loading side and a plate material carrying out side that are vertically movably supported in a recess 16 provided in the upper plate 15. holders 17 and 18, each blank holder 17 and 1
8 is constantly urged downward by a spring 19. On the other hand, the lower mold 12 has a female mold 21 having a female mold surface 21a corresponding to the male mold surface 13a on the bolster 20.
The lower die blank holder part 22 on the plate material loading side has a wrinkle holding part 23 for the preceding plate material 2a to be pressed by the male die 13 and the female die 21,
A stopper 24 for abutting the tip of the trailing plate material 2b is fixed to the outside of the wrinkle presser 23, and a lower mold side bending surface for bending the tip of the trailing plate material 2b into a warped shape is provided outside the stopper 24. 25 is formed. Note that 26 is a support member with a flat upper surface that supports the trailing plate material 2b.

Then, the blank holder 17 on the plate material loading side of the upper mold 11 is provided with a cavity 27 into which the stopper 24 of the lower mold 12 is fitted, and the lower mold side bending mold surface is provided on the outer lower surface of the cavity 27. An upper mold side bending mold surface 28 corresponding to 25 is formed.

In addition, in the table lifter 7, 29
30 is a piston rod connected to the table 29, and 31 is a cylinder. In addition, in the loader 8, 3
2 is a guide rail, 33 is a traveling body attached to the guide rail 32, 34 is an arm attached to the traveling body 33, and 35 is a gripper provided at the tip of the arm.

Next, to explain the operation of the above embodiment, the plate material 2
is sent from the pallet 3 to the roll feeder 4 by the conveyor 5, from the roll feeder 4 to the table 29 of the table lifter 7, and is positioned by coming into contact with the stopper 24 of the press processing device 1.
As the upper die 11 descends, the pressing work of the preceding plate material 2a that has already been supplied between the male die 13 and the female die 21 and the bending process of the trailing plate material 2b that has been supplied onto the table lifter 7 are completed. done at the same time. That is, as the upper mold 11 descends, the blank holders 17 and 18 are first brought into pressure contact with the leading end and rear end of the preceding plate material 2a, and the upper mold side bending die surface 28 of the blank holder 17 on the sheet material carrying side moves backward. The tip of the plate material 2b is pressed against the male die 1.
3, the leading plate material 2a is pressed, and the leading end of the trailing plate material 2b is bent into a warped shape between the upper mold side bending mold surface 28 and the lower mold side bending mold surface 25. After that, the upper die 11 rises,
The preceding plate material 2a is pushed up by an ejector and taken out to the discharge side of the press processing apparatus 1. The trailing plate material 2b is lifted by the lifting of the table 29 by the table lifter 7, and then moved to the loader 8.
The rear end portion is gripped by a gripper 35 and supplied between the male die 13 and the female die 21 of the press working device 1 . At this time, the tip of the trailing plate material 2b is bent into a warped shape, which prevents large downward deflection, and the tip has high rigidity in the width direction, so the side edge is bent downward. This also prevents deflection of the
It is smoothly supplied onto the female mold 21 without hitting the side surface of the female mold surface 21a. Moreover, even if it hits the side surface of the female mold surface 21a, since the tip is curved, it is smoothly guided and supplied onto the female mold 21.

As described above, according to the present invention, since the leading end of the trailing board is bent into a warped shape at the same time as the pressing of the leading board, the following This prevents the tip of the plate material from bending downward, making it possible to smoothly feed the plate material, and since the bending process is performed using the upper blank holder and the lower blank holder, the plate material guidance is not required as in the conventional method. An excellent effect can be obtained in that no equipment is required and the cost of the press working equipment can be reduced.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and are longitudinal sectional views showing a series of flows of a plate material in press working in relation to a press working apparatus. 1...Press processing device, 2...Plate material, 2a...
Leading plate material, 2b... Trailing plate material, 11... Upper mold, 1
2... Lower die, 13a... Male die surface, 14... Male die holder, 17, 18... Blank holder, 21a...
... Female mold surface, 22 ... Lower mold blank holder part, 25
...Bending mold surface on the lower mold side, 28...Bending mold surface on the upper mold side.

Claims (1)

[Scope of utility model registration request] In a device that processes plate material supplied into a press die, the lower die is equipped with a female die surface for press processing, and a bending die surface for bending the tip of the plate material into a warp shape is formed on the lower die blank holder portion on the side where the plate material is carried in. The upper mold has a male mold surface corresponding to the female mold surface, and a blank holder having a mold surface corresponding to the bending mold surface is mounted so as to be movable up and down and always urged downward. The leading plate material is pressed between the female die surface and the male die surface, and at the same time, the tip of the trailing plate material is bent between the blank holder and the lower die blank holder part. A press working apparatus characterized in that the row plate material can be supplied to the female die surface while preventing the tip from bending downward.