JPH05123760A - Apparatus for bending plate material - Google Patents

Abstract

PURPOSE:To quicken carrying-in and carrying-out of a lower die and to improve the efficiency of bending by executing the carrying-in and positioning of a plate material into a lower die and the ejection of a product after bending, in a bender. CONSTITUTION:At the front side of the bender 1 for bending the plate material W, a plate material carrying-in device 13 for separating the piled plate materials W at each one sheet and carrying it onto the lower die 7 in the bender 1 is arranged. Successively, at the back side position of the lower die 7, a product ejecting device 39 for ejecting the product P on the lower die 7 to the front side is arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material bending apparatus, and more specifically, to a product after the plate material is carried into a lower mold for bending the plate material and the product is bent. The present invention relates to a plate material bending apparatus including a device that is quickly carried out from a mold.

[0002]

2. Description of the Related Art Conventionally, for example, a strip-shaped plate material is provided with a U-shaped or a U-shaped end portion provided with a flange portion protruding outward (since the cross-sectional shape is a mountain hat shape, it is hat-bent). In some cases, when a product having a relatively simple cross-sectional shape is bent, a mold for bending the above-mentioned product in one step is attached to a press brake and processed. It is common.

Separately from the above, the press brake is equipped with a die for performing a V-shaped bending process, and the plate material is bent at a plurality of locations to bend the plate material into, for example, a U-shape. ing.

[0004]

SUMMARY OF THE INVENTION In the prior art,
In the former case, the plate material is carried in and out of the lower mold by hand, so there is a problem in improving work efficiency.

In the latter case, there is a problem in improving efficiency in the case of manual work, so automation is attempted by using an industrial robot or the like. In this case, the robot is expensive and the robot There is a problem that the teaching work takes time.

[0006]

SUMMARY OF THE INVENTION In view of the conventional problems as described above, according to the present invention, the laminated plate materials are separated one by one on the front side of a bending machine for bending the plate materials. In the bending machine, a plate material carrying-in device for carrying the product onto the lower mold is provided, and a product extruding device for extruding a product on the lower mold to the front side is provided at a rear position of the lower mold.

[0007]

According to the present invention having the above-mentioned structure, the plate materials separated by the plate material carry-in device are carried into the lower mold,
After being bent, it can be pushed out from the lower mold to the front side by the product pushing device, so that the plate material can be quickly carried in and out of the lower mold, and efficient bending can be performed. it can.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, a press brake is illustrated in this embodiment as a bending machine 1 for bending a plate material W. On the lower frame 5 attached to the lower portion of the side frame 3 in the bending machine 1, a lower die 7 for bending the plate material W is mounted. The upper mold 9 cooperating with the lower mold 7 is attached to the lower part of a ram 11 provided on the upper part of the side frame 3 so as to be vertically movable.

Since the structures of the bending machine 1 and the upper and lower molds 9 and 7 as described above are publicly known, a detailed description thereof will be omitted.

A plate material carrying-in device 13 is arranged on the front side of the bending machine 1. The plate material carry-in device 13 has a function of separating the stacked plate materials W one by one and carrying them into the lower mold 7.

The plate material carrying-in device 13 includes a plurality of wheels 15.
And a table 19 for supporting the stacked works W. The table 19 is provided with a plate member W using a magnet.
A plate material separator 21 for separating the sheets is attached.

Guide members 23 in the front-rear direction are provided on both upper sides of the frame body 17, and both left and right sides of a slide frame 25 are movably supported by the guide members 23. In order to move the slide frame 25 back and forth, an appropriate actuator 27 such as a fluid pressure cylinder is mounted.

An elevating cylinder 29 is attached to the slide frame 25, and an elevating frame 31 is attached to the lower end portion of the piston rod 29P of the elevating cylinder 29. A plurality of guide bars 33 are provided upright on the elevating frame 31, and a plurality of arms 35 extending toward the bending machine 1 are horizontally provided. The arms 35 are stacked at the tip thereof. A work holder 37 such as a vacuum pad or a magnet for adsorbing or magnetically adhering the plate material W is attached.

With the above structure, after the work holder 37 is positioned above the stacked plate materials W, the lifting cylinder 29 is operated to lower the lifting frame 31 to lower the uppermost plate material W. It can be held by the holder 37.

Therefore, after the work holder 37 holds the plate material W, the elevating frame 31 is raised and
By operating the actuator 27 to move the slide frame 25 to the bending machine 1, the plate material W held by the work holder 37 can be loaded onto the lower die 7.

The plate material W carried into the lower mold 7 as described above.
Of the pressing cylinder 43 for abutting and positioning the abutting member 41 on the back gauge device 39 of the folding machine 1.
Is attached to the frame body 17.

More specifically, a beam member 45 is attached to the frame 17 so that the vertical position can be adjusted (details are not shown), and the pressing cylinder 43 is attached to the beam member 45. The pressing cylinder 43 is provided corresponding to the height of the lower die 7, and a pressing pad 47 is attached to the tip end portion of the piston rod of the pressing cylinder 43.

With the above construction, the plate material W carried onto the lower die 7 is reliably brought into contact with the abutting member 41 of the back gauge device 39 by operating the pressing cylinder 43 and pressing it with the pressing pad 47. Therefore, the plate material W can be accurately positioned.

As described above, the plate material W is loaded onto the lower mold 7,
Further, after the accurate positioning, the ram 11 is lowered to bend the plate material W by the upper and lower molds 9 and 7.

In order to extrude the product P, which has been bent as described above, to the front side, the back gauge device 39 is used.
The abutting member 41 is provided so as to be movable back and forth.

More specifically, a support arm 49 is supported on both left and right sides of the rear surface of the lower frame 5, and a screw rod 53 rotatably supported by a bracket 51 provided on the support arm 49. The end of the support beam 55 supporting the contact member 41 is screwed.

Therefore, by rotating the screw rod 53 by the servo motor 57, the support beam 55 is moved in the front-rear direction (left-right direction in FIG. 1).
Therefore, by moving the support beam 55 to the left in FIG. 1, the product on the lower die 7 can be pushed and dropped to the front side (left side in FIG. 1) by the abutting member 41.

As described above, in order to store the product P pushed out and dropped to the front side, the wheel 5 is provided at the lower portion of the frame body 17.
A storage box 61 including 9 is movably arranged.

FIG. 3 shows a second embodiment, in which, instead of the back gauge device 39, an extrusion cylinder 63 is provided at the rear position of the lower mold 7 so that the front and rear positions can be adjusted. More specifically, the bracket 65 that supports the push-out cylinder 63 is mounted in a positionally adjustable manner via a mounting screw 67 so that the position can be adjusted back and forth.

Therefore, in this structure, the plate W is brought into contact with the extruding pad 69 provided on the piston rod of the extruding cylinder 63 so that the lower die 7 is positioned, and the product after the bending process is extruded by the extruding pad 69. It is to be pushed out to the front side.

[0026]

As can be understood from the above description of the embodiments, according to the present invention, the plate material W on the lower die 7 in the bending machine 1 can be carried in and positioned quickly. In addition, the product after bending can be extruded, and the plate can be efficiently bent.

[Brief description of drawings]

FIG. 1 is a side view of a plate bending apparatus according to the present invention.

FIG. 2 is a front view of a plate material carry-in device.

FIG. 3 is a side view showing a second embodiment.

[Explanation of symbols]

 1 Bending Machine 7 Lower Die 13 Plate Material Loading Device 39 Back Gauge Device 63 Extrusion Cylinder 43 Push Cylinder

Claims (1)

[Claims] 1. A plate material carry-in device for separating the stacked plate materials one by one and carrying them into a lower die of the bending machine is provided on the front side of a bending machine for bending the plate material, A plate material bending apparatus, characterized in that a product extruding device for extruding a product on a lower mold to the front side is provided at a rear position of the mold.