JPH07185699A - Metal plate unloader - Google Patents

Abstract

PURPOSE:To align a standard position of a metal plate to the next stage standard position by installing an unloader to pass through the upper side of a work table of a metal plate machine, and installing a gripper to push the end of the metal plate on the table following to running of the unloader. CONSTITUTION:A stock conveyer 7 is arranged on the right side of a punching press 1 through an auxiliary table 6, a metal plate W machined in the punching press 1 is conveyed out on the stock conveyer 7 with a metal plate unloader 8. Because this metal plate unloader 17 grips the end of the metal plate W with a gripper 18, pushes it on the work table and conveys it following to running of the unloader 17, the positional standard of the metal plate when it is conveyed out is a side nearby the metal plate machine. Therefore, when it is conveyed to the next stage's metal plate machine, the positional standard can be aligned if it is conveyed as it is, without reversing the metal plate W.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material unloader for carrying a plate material out of a plate material processing machine such as a punch press.

[0002]

2. Description of the Related Art FIG. 9 is a plan view showing an outline of a plate material processing line in which a plate material punched by a punch press is carried into a shearing machine and cut. This figure shows a line for installing the plate material unloader of the embodiment, and the conventional problem will be described with reference to this figure. In this plate material processing line, the plate material W processed by the punch press 1 is carried out onto the stock conveyor 7 by a gripper type unloader (not shown), and is placed below the stock conveyor 7 on a trolley 10 which is allowed to enter and exit. Loaded on. The plate material W loaded on the carriage 10 is transferred to the carriage 12 which is movable in parallel with the carriage 10 as indicated by an arrow A. The plate material W transferred to the carriage 12 is carried onto the work table 14 of the shearing machine 13 by a plate material loader having a suction pad, for example. Shirring machine 1
Instead of 3, the punch press of the next stage may be arranged.

[0003]

However, when the conventional drawer type plate unloader is used to carry out the plate material W from the punch press 1 to the stock conveyor 7,
Since the gripper of the plate unloader grips the right end of the plate W on the work table 4 of the punch press 1 and pulls it out onto the stock conveyor 7, the reference position of the plate W on the stock conveyor 7 is the right end corner. The left-right corner of the shearing machine 13 on the work table 14 is in the opposite left-right direction to the reference position P5, and the shearing machine 13
It is not possible to accurately perform position reference alignment of the plate material W in step 1. Particularly, when the plate material W has various sizes, it is difficult to match the position reference. For this reason, it is necessary to provide a reversing device for reversing the plate material W to the left and right and aligning it with the reference position P5 of the shearing machine 13 in the middle of the plate material carry-in path from the stock conveyor 7 to the shearing machine 13. There was a problem that it became complicated. Further, when the reversing device is not provided, it has to be manually reversed, which is troublesome.

An object of the present invention is to provide a plate material unloader capable of aligning a reference position of a plate material when it is unloaded from one plate material processing machine by a plate material unloader with a reference position of a plate material processing machine to be subsequently loaded. Is.

[0005]

A plate material unloader of the present invention is provided with an unloader which is installed on a erection rail so that it can travel freely and can pass above a work table of a plate material processing machine.
A gripper is provided at the lower end of the unloader to push the end of the plate material on the table as the unloader travels.

According to a second aspect of the present invention, there is provided a plate material unloader for moving a gripper up and down for moving the gripper up and down, a swing support device for swingably supporting the gripper up and down, and a gripper in a raised position. A rocking lock member for stopping rocking is provided.

[0007]

According to the plate material unloader having this structure, the end portion of the plate material on the work table of the plate material processing machine is gripped by the gripper, and the plate material is carried out by pushing it out from the work table as the unloader travels. The position reference of the plate material at this time is the side closer to the plate material processing machine. Therefore, when carrying in the plate material processing machine of the next stage, it is possible to carry in the plate material as it is without inverting it and align it with the position reference.

According to the second aspect of the present invention, since the gripper can be moved up and down by the gripper vertical movement device, when gripping the end of the plate material on the work table with the gripper, the gripper is moved to a position slightly lower than the upper surface of the table. It is possible to lower the grip to grip the end of the plate material, and after gripping, raise the gripper to a position slightly higher than the upper surface of the table to shift to the pushing operation. As a result, the plate material can be smoothly carried out without the gripper interfering with the table surface. Further, since the gripper can be elastically rocked up and down by the rocking support device, for example, when the plate material carried out on the stock conveyor is dropped onto the carriage below the conveyor, the gripper releases the grip of the plate material end portion. Until then, the gripping end of the plate material by the gripper does not bend and the plate material is not damaged. Further, while the gripper is in the raised position and the carrying-out operation is performed, the lock function of the swing lock member does not work and the gripper does not swing, so that the plate material can be carried out smoothly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a schematic plan view showing a part of a plate material processing line. A plate material loading table 2 is arranged on the left side of the punch press 1 via an auxiliary table 3, and the plate materials W loaded on the plate material loading table 2 are loaded onto the punch press 1 via the auxiliary table 3 by a plate material loader (not shown). It is loaded onto the work table 4. The reference position P2 of the plate material W on the work table 4 is the reference position P1 on the plate material loading table 2.
Aligned to the bottom left corner.

A stock conveyor 7 is arranged on the right side of the punch press 1 via an auxiliary table 6, and the plate material W processed by the punch press 1 is processed by a plate material unloader 8 (FIG. 1) of the embodiment of the present invention. It is carried out on the stock conveyor 7. Below the stock conveyor 7, a carriage 10 mounted on a rail 9 laid in a direction Y orthogonal to the carry-out direction X is arranged so that it can freely move in and out. The plate material W carried out on the stock conveyor 7 is a cart 1 that stands by below.
0 is dropped and loaded. Another carriage 12 is mounted on the rail 11 laid parallel to the rail 9 to the left side of the shearing machine 13, and the loading plate material W on the carriage 10 is transferred onto the carriage 12 by a transfer device (not shown). It The plate material W transferred onto the carriage 12 is loaded onto the work table 14 of the shearing machine 13 from a left side position of the shearing machine 13 by a plate material loader (not shown). The reference position P5 of the plate W on the work table 14 is set at the lower left corner as in the punch press 1. The plate material W processed by the shearing machine 13 is carried out by the conveyor 15. Instead of the shearing machine 13, a punch press in the next stage or another plate material processing machine may be installed.

The plate material unloader 8 that carries the plate material W onto the stock conveyor 7 from the work table 4 of the punch press 1 is horizontally installed from above the punch press 1 to above the stock conveyor 7 as shown in FIG. And a unloader 17 movably mounted on the rail 16, and a gripper 18 is provided at the lower end of the unloader 17 for gripping and pushing the end of the plate material W on the work table 4. Has been.

2, 3, and 4 are a front view, a side view, and a plan view of the plate material unloader 8, respectively.
Above the unloader 17, a plurality of traveling rollers 19 installed on the erection rail 16 and a motor 2 which is a traveling drive source.
0 is provided. The rotation output of the motor 20 is transmitted to the pinion 24 via the sprocket 21, the chain 22, and the sprocket 23. The pinion 24 is the erection rail 1
It is meshed with a rack 25 provided on the lower surface of 6 in the traveling direction. With this configuration, the unloader 17 travels along the erection rail 16 by driving the motor 20.

A cylinder 27 for retracting and rotating the gripper is rotatably supported on a frame 26 hanging from the upper portion of the unloader 17 via a bracket 28 and a horizontal support shaft 29, and a bracket is provided at the lower end of the frame 26. A gripper suspension base 32 is rotatably supported via 30 and a horizontal support shaft 31. The gripper suspension base 32 has a pin 33.
Is connected to the tip of the piston rod 27a of the cylinder 27, and the gripper suspension base 32 can be vertically swung by the forward / backward movement of the piston rod 27a.

The gripper suspension base 32 has a gripper 1
A supporting member 35 is suspended via an elevating cylinder 34, which serves as a gripper up-and-down moving device for moving up and down 8, and a guide rod 54. At the lower end of the support member 35, a gripper 18 including an upper jaw portion 18a and a lower jaw portion 18b is provided as shown in FIG. That is, the rear portion of the lower jaw portion 18b is vertically swingably connected to the lower end portion of the support member 35 via the rotating pin 36, and the middle portion of the upper jaw portion 18a is connected to the middle portion of the lower jaw portion 16b via the rotating pin 37. Connected to the department. Also,
A support plate 38 extending over both sides of the lower jaw 18b is fixed. A spring 39 is connected between the support plate 38 and the support member 35 to form a swing support device 38 that supports the gripper 18 so as to be elastically swingable up and down. An opening / closing cylinder 41 is provided in the upper jaw portion 18a, and an elevating rod 41a of the opening / closing cylinder 41 is brought into contact with the rear upper surface of the lower jaw portion 18b. As the elevating rod 41a moves up and down, the upper jaw 18a relatively swings up and down with respect to the lower jaw 18b about the pivot pin 37,
Thereby, the opening / closing operation of the gripper 18 is performed.

A swing lock member 43 is provided at the rear portion of the support plate 38, and this member 43 is provided at the lower end of the gripper suspension base 32 with the gripper 18 in the raised position. 42 (FIG. 2) and gripper 18
Stop swinging. Further, at the rear part of the support plate 38, a guide piece 44 is provided which is guided by the back surface of the hitting piece 42 as the gripper 18 moves up. Further, the gripper 18 is provided with a plate material detection sensor 45 that detects that the plate material W is sandwiched. The sensor 45 includes a sensor rod 47 that is provided on the side of the lower jaw portion 18b of the gripper 18 so as to be able to move forward and backward, and is biased toward the advancing side by a spring 46, and a proximity switch 48 that detects the backward movement of the sensor rod 47. .

As shown in the front view and the plan view of FIGS. 8A and 8B, the stock conveyor 7 has a roller table 49 installed on a conveyor frame 7a. The roller table 49 is formed in a blind shape by connecting both ends of a large number of rotatable rollers 50 between a pair of endless chains 51, 51. Endless chain 51 is sprocket 52
The sprocket 52 is driven by a motor (not shown) to move the roller table 49 from the accommodation space 53 at one end of the conveyor frame 7a to the carriage 10.
Can be extended above. This roller table 4
The sheet material W unloaded by the sheet material unloader 8 from the work table 4 of the punch press 1 is placed on the roller table 49 by feeding 9 and the upper portion of the carriage 10 is opened by retracting the roller table 49 to the accommodation space 53. The plate material W is loaded on the carriage 10.

The operation of the above configuration will be described. The plate material W processed by the punch press 1 and positioned at the reference position P2 on the work table 4 is carried out by the plate material unloader 8 onto the roller table 49 of the stock conveyor 7. In this carrying-out operation, the plate material unloader 8 passes over the work table 4 of the punch press 1 from the retracted position to move the plate material W.
When the gripper 18 goes to grip the end of the
As shown in (A), it is restricted to the posture rotated upward. That is, as shown by the chain line in FIG. 2, the piston rod 27a of the lifting cylinder 27 is retracted, and the gripper suspension base 32 is rotated about the horizontal pivot 31 from the drooping posture to the flipping posture. Is the position rotated upwards. Since the plate material unloader 8 moves to the plate material gripping position in such a posture, it does not interfere with the carriage 5 or the like when the punch press 1 is in operation when passing over the work table 4.

When the plate material unloader 8 moves to a position above the reference position P2 of the work table 4 which is the plate material gripping position, the plate material unloader 8 returns the gripper 18 to the hanging posture shown by the solid line in FIG. In this state, the gripper 18 faces the left end of the plate material W on the work table 4. From this state, the plate material unloader 8 is slightly moved to the stock conveyor 7 side while the gripper 18 is opened, and when the plate material detection sensor 45 detects the end of the plate material W, the lift cylinder 41 is operated to operate the gripper 18.
Close. As a result, the end of the plate material W is gripped by the gripper 18. Next, the gripper 18 is lifted to a position slightly higher than the work table 4 by operating the lifting cylinder 27, which is a gripper vertical movement device. At this raised position, as shown in FIG. 7, the rocking lock member 43 abuts against the contact piece 42 on the gripper suspension base 32 side, so that rocking of the gripper 18 about the pivot pin 36 is restricted.

The end portion of the plate material W is attached to the gripper 18 as described above.
The plate material unloader 8 is moved toward the stock conveyor 7 side while being gripped by. As a result, the gripper 18
The plate material W is pressed by the work table 4 of the punch press 1
It is carried out from above onto the roller table 49 of the stock conveyor 7 via the auxiliary table 6. The plate material unloader 8 stops when the gripper 18 moves to the movement position corresponding to the reference position P3 of the stock conveyor 7. As a result, the left end corner of the plate material W is aligned with the reference position P3 on the left end side of the stock conveyor 7. That is, the reference position P3 for positioning the plate material on the stock conveyor 7 in this case is aligned with the reference position P2 on the work table 4 of the punch press 1. Further, in this unloading operation, the gripper 18
Since the rocking is stopped by the rocking lock member 43, the plate material W can be pushed out stably and smoothly.

Roller table 49 of stock conveyor 7
After the plate material W is carried out, the gripper 18 is slightly lowered by lowering the lifting cylinder 27, which is a gripper vertical moving device. As a result, the swing lock member 43
The rocking lock of the gripper 18 is released. next,
The storage space 5 for the roller table 49 of the stock conveyor 7
3, the upper portion of the carriage 10 is opened (the gripper 18 is shown by a chain line in FIG. 8A), and the gripping of the plate material W by the gripper 18 is released. This allows
The plate material W drops onto the carriage 10 and is loaded. At this time,
Until the gripping of the plate material W by the gripper 18 is released, the gripper 18 is swingable around the rotation pin 36 (see FIG. 5).
Since it is indicated by the arrow a), an excessive bending force does not act on the grip portion of the plate W, and the plate W is not damaged.

The plate materials W loaded on the dolly 10 are transferred onto another dolly 12 by a carrying device (not shown) as shown in FIG. 9, and the work table of the shearing machine 13 is further laid from this dolly 12 by a plate material loader (not shown). 14 is loaded. Work table 14 of the shearing machine 13
Since the reference position P5 above is the same as the reference position P3 on the stock conveyor 7 on the left end side, the work table 1
It is possible to accurately position the plate material W on the plate 4.

[0022]

The plate unloader of the present invention is provided with an unloader that is installed so as to be able to travel along the erection rails and that can pass above the work table of the plate processing machine. At the lower end of the unloader, the plate on the table is installed. Since the gripper that pushes the end portion of the plate as the unloader travels is provided, the plate material on the plate material processing machine can be pushed out and carried out. Therefore, the unloading plate material is carried out so that the side on the plate material processing machine side becomes the reference position, and therefore the reference is aligned with the loader etc. of the plate material processing machine in the next process, so that when carrying out to the next process, there is no inversion etc. It can be transported as is.

According to the second aspect of the present invention, the gripper up-and-down device for moving the gripper up and down, the swing support device for swingably supporting the gripper up and down, and the gripper of the gripper in the raised position. Since a rocking lock member for stopping the rocking is provided, when gripping the end of the plate material on the work table with the gripper, the gripper is lowered to a position slightly lower than the table upper surface to grip the plate material end, and after gripping, By raising the gripper to a position slightly higher than the upper surface of the table and shifting to the pushing operation, the plate material can be smoothly carried out. Further, for example, when the plate material carried out on the stock conveyor is dropped onto the carriage below the conveyor, the gripper can be elastically rocked by the rocking support device until the gripper releases the grip of the plate material end portion. Yes,
The gripping end of the plate material by the gripper does not bend and the plate material is not damaged. Furthermore, during the carrying-out operation while the gripper is in the raised position, the lock function of the rocking lock member works and the gripper does not rock, so that the plate material can be carried out smoothly.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an operation of a plate material unloader that is an embodiment of the present invention.

FIG. 2 is a partially cutaway front view of the plate material unloader.

FIG. 3 is a partially cutaway side view of the plate material unloader.

FIG. 4 is a plan view of the plate material unloader.

5A is a partially cutaway front view of a gripper of the plate unloader, and FIG. 5B is a partially cutaway side view of the gripper.

6A is a sectional view taken along the line I-I in FIG. 5A, and FIG. 6B is a sectional view taken along the line II-II in FIG. 5A.

FIG. 7 is an explanatory view showing the raising operation of the gripper.

FIG. 8A is a partially cutaway front view of the stock conveyor,
(B) is a plan view of the stock conveyor.

FIG. 9 is a schematic plan view of a plate material processing line in which the plate material unloader is used.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Punch press (plate material processing machine), 4 ... Work table, 16 ... Erection rail, 17 ... Unloader, 18 ... Gripper, 34 ... Lifting cylinder (gripper up-and-down moving device), 3
6 ... Rotating pin, 38 ... Support plate, 39 ... Spring, 40 ... Swing support device, 42 ... Hitting piece, 43 ... Swing lock member, 4
4 ... Guide piece, W ... Plate material

Claims (2)

[Claims] 1. An unloader, which is movably installed on an erection rail and can pass above a work table of a plate processing machine, is provided with an end of the plate on the table at the lower end of the unloader as the unloader travels. Plate unloader equipped with a gripper to push. 2. A gripper up-and-down device for moving the gripper up and down, a swing support device for swingably supporting the gripper up and down, and a swing of the gripper with the gripper in a raised position. The plate material unloader according to claim 1, further comprising a rocking lock member for stopping.