JPH05123762A - Work carrying-in device for bender - Google Patents

Abstract

PURPOSE:To prevent the sagging and the buckling of a work and to restrain the tramping of the work at the time of carrying the work in a bender by holding up one sheet of the work from a work piling table fixing the height. CONSTITUTION:This device is composed of the work piling table 25 having the fixed height, arranged at the left side of a press brake 1 and storing the works W in the piling condition, an one sheet take-up device 7 arranged above this work piling table 25 and providing an attracting pad 41 as vertically movable, a work clamp 9 for clamping the work W and a loading device 11 as shiftable for carrying the work W clamped with this work clamp 9 into the press brake 1. Further, this device provides a work support 75 as withdrawable for supporting the lower surface of the work W in the one sheet take-up device 7 at the time of clamping the work W in the condition of holding up the work W with the attracting pad 41, with the work clamp 9 and carrying into the press brake 1 with the loading device 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work loading device for a bender for picking up works loaded on a work loading table one by one and loading them into a vendor.

[0002]

2. Description of the Related Art In order to automatically load a work into a conventional bender, a lifter table loaded with the work is provided near the bender, and a lifter table is provided to take out the work loaded on the lifter table one by one. A single picking device equipped with a suction pad that can move up and down is provided above the table.Furthermore, only one work is picked up by the suction pad of this single picking device, lifted, and then clamped by a work clamp. A work carrying-in device that can carry the work into the vendor by a loading device is conceivable.

In this work-carrying-in device, as the work loaded on the lifter table decreases as the machining progresses, the height of the work decreases, and the lifter table rises to the extent of the work loaded. The distance between the top surface and the pass line is always constant, so that a smooth single sheet can be taken.

[0004]

However, since the lifter table is adopted in the work carrying-in device, there is a problem that the cost is inevitably increased. To solve this problem, we adopted a fixed work loading table without using a lifter table, and picked up one work loaded on this work loading table using the suction pad provided in the single picking device. I made it work.

As a result, since the height of the work loading table is fixed, the distance between the upper surface of the loaded work and the pass line increases as the number of works decreases, and the work is picked up during the single-sheet picking operation. There are problems such as sagging, bending of the waist, flapping of the work when the work is carried in, and in some cases, the work comes off from the suction pad.

In order to solve the above-mentioned problems, an object of the present invention is to prevent the sagging of the work and the bending of the work which occur when the work is picked up when the work loading table is fixed in height, and at the time of carrying in the work. (EN) It is an object to provide a work loading device for a vendor that suppresses flapping of a work that occurs.

[0007]

In order to achieve the above object, the present invention provides a work loading table which is provided in the vicinity of a bender and has a fixed height for stocking work in a loaded state, and this work loading table. A single-piece picking device provided above the work piece and having a vertically movable suction pad; and a work clamp that clamps a work piece that is picked up and picked up from the work load table by a suction pad that is provided in the single piece picking device, It consists of a movable loading device that loads the work clamped by this work clamp to the bender, and when the work is lifted by the suction pad, clamped by the work clamp and transferred by the loading device to the bender, the bottom surface of the work A work support for supporting the To constitute a click carry-in device.

[0008]

By adopting the work loading device for a bender according to the present invention, the work loaded on the work loading table whose height is fixed can be lifted one by one from the upper surface by the suction pad of the single picking device. This lifted work is clamped by a work clamp. Further, the work clamped in the work clamp by the loading device is carried into the bender.

When the work lifted by the suction pad is clamped by the work clamp and loaded into the bender by the loading device, the work support provided in the single-sheet picking device is located below the work lifted by the suction pad from the retracted position. When the holding of the suction pad is released, the lower surface of the work is supported by the work support.

Therefore, when the work is clamped by the work clamp and is supported by the work support when it is carried into the bender by the loading device, the work is sagged, bent, flapping, or peeled off from the suction pad. It is carried in smoothly without causing any trouble.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Referring to FIG. 3, for example, a press brake 1 as a bender is arranged, and a material stocker 5 of a work loading device 3 is provided on the left side of the press brake 1, for example, and the material stocker 5 is also provided. A single-sheet picking device 7 is provided above the device 5. A loading device 11 is provided on the front side of the press brake 1 for moving the work clamp 9 in the work loading device 3 in the left-right direction. Further, on the right side of the press brake 1, there is provided a product stocker 13 for stocking the bent product G bent by the press brake 1.

The press brake 1 is provided with standing C-shaped side frames 15R and 15L, and a lower table 17 is fixedly provided on the lower front side of the side frames 15R and 15L. ing. On the upper part of the lower table 17, for example, a lower mold 19 for forming a recess is provided via a lower mold holder. Further, an upper table (ram) 21 which is vertically moved by a fluid cylinder (not shown) is provided on the front side of the upper portions of the side frames 15R and 15L. An upper mold 23 for molding, which has a convex shape, for example, is provided facing the mold 19 via an upper mold holder.

With the above configuration, the work W carried in by the work carry-in device 3 whose details will be described later is placed and positioned on the lower die 19. In this state, a fluid cylinder (not shown) is operated to move the upper table 21 up and down, whereby the work W is bent by the cooperation of the lower mold 19 and the upper mold 23.

A work stacking table 25 as the material stocker 5 in the work carry-in device 3 is fixed to the side wall of the lower table 17 in the press brake 1, for example. This work loading table 25 is the lower table 1
It may be provided near the side of 7.

A plurality of guide poles 27 are erected on the work loading table 25.
A plurality of works W are stacked in between. By this guide pole 27, the sheets are aligned and stacked without shifting in the front-rear direction. Lower table 17 of this work loading table 25
A plate material separating device 29 is provided on the side to easily separate the work W from the stacked work W when the work W is lifted. Since the specific configuration of the plate material separating device 29 is already known, detailed description thereof will be omitted.

The single-sheet picking device 7 is provided above the work stacking table 25. More specifically, for example, a U-shaped support frame 31 extending in the vertical direction is attached to the rear portion of the work stacking table 25. An upper and lower fluid cylinder 33 is provided on the upper frame 31U of the support frame 31.

A piston rod 35 is attached to the tip (lower end) of the up / down fluid cylinder 33, and
A vertically movable suction frame 37 is integrated with the lower end of the piston rod 33. This suction frame 37
A plurality of suction rods 39 extending downward are attached to the. At the lower end of each suction rod 39, the suction pad 4
1 is provided.

The suction pad 41 is for sucking the work W by sucking air by a vacuum device, and its concrete structure is already known.
Detailed description is omitted. The suction pad 41 may be made to attract the work W by a magnet.

With the above structure, the upper and lower fluid cylinder 33
When the suction frame 37 is lowered via the piston rod 35, the suction pad 41 comes into contact with the upper surface of the work W loaded on the work loading table 25, and the work W at the top is attached to the suction pad 41. Adsorbed. Next, by raising the suction frame 37, only the work W sucked by the suction pad 41 is lifted on the pass line. At this time, by operating the plate material separating device 29, the work W after the second work W is not lifted up and well separated and only one work W is lifted.

A loading device 11 in the work loading device 3 is provided in front of the press brake 1. More specifically, a support plate 43 is provided on the front portion of the lower table 17 in the press brake 1. A driven pulley 45 and a drive pulley 47 are provided on the left and right of the support plate 43, and a timing belt 49 is provided between the driven pulley 45 and the drive pulley 47.
Is wound.

A work clamp device 51 is attached to a part of the timing belt 49, and a work clamp 9 which is movable back and forth is provided at the tip of the work clamp device 51. One end of a rotary shaft 53 is attached to the shaft center of the drive pulley 47, and a pulley 55 is fitted to the other end of the rotary shaft 53.

A drive motor 57 is attached to the side frame 15R via a bracket or the like, and another pulley 6 is attached to an output shaft 59 of the drive motor 57.
1 is fitted. This pulley 61 and the pulley 55
A belt 63 is wound around and.

With the above structure, when the drive motor 57 is driven, the pulley 61 is rotated via the output shaft 59.
The rotation of the pulley 61 is transmitted to the drive pulley 47 via the belt 63, the pulley 55, and the rotating shaft 53. Therefore, when the drive pulley 47 is rotated, the timing belt 49 is rotated to travel, thereby causing the timing belt 4 to rotate.
The work clamp device 51 attached to a part of 9 is moved in the left-right direction, and the work clamp 9 is also moved in the same direction.

The work clamp device 51 is provided with, for example, a shaft-shaped payout pusher 65 for paying out the bent product G on the press brake 1. Further, a stopper 6 is provided at the rear portion of the lower mold 19.
7 is provided, and a work pusher device 69 is provided at the front part of the lower mold 19.

A product stocker 13 is provided on the right side of the press brake 1. The product stocker 1
Reference numeral 3 denotes a tilt table 71 for dropping the product G carried out from the press brake 1 downward, and a collecting box 73 for collecting the product G below the tilt table 71.
It consists of and.

A series of operations for loading the work W loaded on the work loading table 25 into the press brake 1 and bending the work W with the press brake 1 and then stacking the products G in the stacking box 73. Will be explained. First, the suction pad 41 of the single-sheet picking device 7 is lowered to suck the uppermost work W loaded on the work loading table 25. When the suction pad 41 is raised in this state and the plate material separating device 29 is operated,
The top work W is easily separated from the second and subsequent works W and only one work W is lifted on the pass line.

At this time, the work clamp device 51 stands by at the position of the left stroke end, and the work clamp 9 clamps one end side of the work W lifted on the pass line by the suction pad 41. When the work W is clamped by the work clamp 9, the holding of the suction pad 41 is released and the work clamp device 51 is moved to the stroke end in the right direction.

Next, when the work clamp 9 is unclamped, the work W is placed on the lower die 19 and the work clamp device 51 is returned to the stroke end on the left side. While the work clamp device 51 is returned, the work W is bent by the cooperation of the lower mold 19 and the upper mold 23.

Further, after the work W is carried into the press brake 1 by the work clamp 9 of the work clamp device 51, the suction pad 41 descends to adsorb the next work W and waits in a state where it is lifted up onto the path line. I will let you.

Therefore, at the same time when the bending work is completed by the press brake 1, the work clamp 9 moves the next work W
Clamp and load into the press brake 1. The product G processed by the payout pusher 65 provided in the work clamp device 51 while the next work W is carried in.
The product G is carried out to the tilt table 71 by being pushed to the right, and is dropped from the tilt table 71 to be stacked in the stacking box 73. By repeating this series of operations, a plurality of works W are automatically bent.

While the work W is lifted up to the pass line by the suction pad 41, one end of the work W is clamped by the work clamp 9 to release the holding of the suction pad 41.
Move the work clamp 9 to the right side of FIG.
Work support 7 for supporting the lower surface of the work W on the pass line when the work is carried into the press brake 1 side.
As shown in FIGS. 1 (A) and 1 (B), 5 is provided in the single-sheet picking device 7. That is, the guide pole 27 on the upper side in FIG. 1 (A) and on the left side in FIG. 1 (B).
A support frame 79 is integrated with the bracket 77 provided on the side, and a fluid cylinder 81 is attached to the support frame 79. A support roller 85 for supporting the work W is rotatably supported at the tip of a piston rod 83 mounted on the fluid cylinder 81.

With the above structure, when the fluid cylinder 81 is operated, the support roller 8 is moved through the piston rod 83.
5 moves linearly from the position indicated by the solid line to the position indicated by the chain double-dashed line in FIGS.

The operation when the work W is carried into the press brake 1 from the state where the work W is lifted by the suction pad 41 will be described in detail with reference to FIG. First, Figure 2
In (A), the suction pad 41 is lowered to attract the work W, and then the suction pad 41 is raised to above the pass line. Next, the fluid cylinder 81 is operated to linearly move the support roller 85 of the work support 75 as shown in FIG. 2 (B) to position the work W adsorbed on the adsorption pad 41 to a position below the work W. When the suction holding of the suction pad 41 is released, the lower surface of the work W is supported by the support roller 85. In this state, when the work clamp 9 is moved to the press brake 1 side as shown in FIG. 2 (C), the rear side of the work W, that is, the left side in FIG. 2 (C) is supported and moved by the support roller 85. .. Work W
When is carried into the press brake 1, the support roller 85 is retracted to its original position as shown in FIG.

The standby position, which is the retracted position of the support roller 85, stands by at a position where the work W does not interfere with the work W to be lifted.

As described above, when the work W is lifted up on the pass line, clamped by the work clamp 9 and carried into the press brake 1, the rear side of the work W is supported by the support roller 85, and the work W is supported. It can serve as a guide for W to assist smooth loading of the work W, prevent sagging of the work W and bending of the work W, and further suppress flapping during loading.

Instead of moving the support roller 85 linearly by using a rotary actuator or the like in the work support 75 instead of the fluid cylinder 81, the support roller 85 may be positioned below the work W lifted by the turning motion. Absent. Furthermore, instead of the support roller 85,
It may be a guide shaft or a plate. Further, a plurality of work supports 75 may be provided. Further, the position of the work support 75 may be any position as long as it can support the work W.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. Although the press brake 1 is used as the bender in the description, other press machines or bending machines can be used.

[0039]

As will be understood from the above description of the embodiments, according to the present invention, since the construction is as described in the claims, the work is lifted on the pass line. The work clamp can prevent the work from sagging and bending at the time of loading into the bender, and can also prevent the work from flapping when loading.

[Brief description of drawings]

1A and 1B show a work support which is a main part of the present invention, FIG. 1A being a plan view and FIG. 1B being a side view.

FIG. 2 is an operation explanatory diagram when a work is lifted on a pass line and carried in.

FIG. 3 is a perspective view of a press brake equipped with a work loading / unloading device embodying the present invention.

[Explanation of symbols]

 1 Press Brake (Bender) 3 Work Loading Device 5 Material Stocker 7 Single Picking Device 9 Work Clamp 11 Loading Device 17 Lower Table 19 Lower Die 21 Upper Table 23 Upper Die 25 Work Loading Table 41 Suction Pad 51 Work Clamping Device 75 Work support 81 Fluid cylinder 85 Support roller

Claims (1)

[Claims] 1. A sheet having a fixed height work stacking table which is provided near a bender and stocks work in a stacked state, and a suction pad which is provided above the work stacking table and is vertically movable. A picking device, a work clamp that clamps the work picked up and picked up from the work loading table by a suction pad provided in this one-piece picking device, and a movable work piece that carries the work clamped by this work clamp to the bender. A loading device, and a work support that supports the lower surface of the work when the work is lifted by the suction pad and clamped by the work clamp and carried in to the bender by the loading device is removably provided in the single picking device. A work loading device for a vendor, which is characterized by: