JPH05212472A - Sheet holding device - Google Patents

Abstract

PURPOSE:To provide the sheet holding device which can automatically hold according to the size of sheet. CONSTITUTION:The 1st work clamp 23, an end part of a sheet W, which has been taken on by one is clamped and reciprocated to the specified direction and a conveyer device 19 that the metal sheet W of the state being clamped with this 1st work clamp 23 is mounted and reciprocated to the specified direction are provided in freely reciprocating by opposing to the 1st work clamp 23. The 2nd work clamp 25 having an abutting sensor 27 that the other end of the sheet W is abutted with the top end and clamped, and a push bar 37 which is made as one body with this 2nd work clamp 25, abutted to the conveyer device 19 and position the conveyer device 19, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material holding device capable of holding a plate material regardless of the size of the plate material.

[0002]

2. Description of the Related Art Conventionally, a plate material holding device for holding both end portions of a plate material is provided with guide rails along the work table at both end portions of a work table on which the plate material is placed, and movable arm members are provided on the guide rails. , And a plurality of work clamps were attached to this arm member. One arm member is arranged at each end of the guide rail, and when the plate material is loaded and placed on the work table, one arm member is moved to one end surface position of the plate material, and the arm member is moved. The work clamp provided on the other arm member is moved to the other end surface position of the plate member by gripping the work clamp provided on the other side of the arm member. The other end of the plate material is gripped by.

[0003]

However, in the above-described conventional plate material holding device, the arm member is manually moved in accordance with the size of the plate material. Therefore, the work clamp must be moved and positioned in accordance with the size of the plate material. It was a difficult task, and labor was spent on making many corrections. Also, there is an inappropriate position for the work clamp depending on the plate material, and in that case, in order to change the position of the work clamp, the arm member is removed from the guide rail and the work clamp position is changed, which cannot be automated. There was a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to automatically hold a plate material in accordance with the size of the plate material with a simple structure without using human hands. It is intended to provide a plate material holding device.

[0005]

In order to achieve the above object, a plate material holding device of the present invention comprises a first work clamp that reciprocates in a predetermined direction by clamping one end of a single plate material. A conveyor device that mounts a plate material clamped by the first work clamp and reciprocates in a predetermined direction; and a conveyor device that is reciprocally provided so as to face the first work clamp, and that is provided at the tip thereof. A second work clamp having a butting sensor for abutting and clamping the other end of the plate material; and a push bar integrated with the second work clamp for abutting the conveyor device and positioning the conveyor device. It is characterized by

[0006]

The plate material holding device of the present invention having the above-described structure is
A first work clamp grips one end of a single plate material, and a conveyor device is inserted below the plate material gripped by the first work clamp to place the plate material,
The workpiece clamp and the conveyor device move in a predetermined direction and stop in synchronization.

Next, when the second work clamp moves from the direction opposite to the first work clamp, the push bar mounted on the second work clamp contacts the conveyor device, and the second work clamp is reached. The conveyor device is retracted and positioned with the movement of. Due to this positioning, the plate material clamped by the first work clamp has the other end projected from the end of the conveyor device by a predetermined length. The end portion of the projected plate material is clamped by the second work clamp, and the conveyor device is moved to the rear of the first work clamp by the signal of the abutment sensor provided on the second work clamp, and the plate material is moved. Both end portions of are clamped by the first and second work clamps, respectively.

Therefore, regardless of the size of the plate material, when a single plate material is taken to a predetermined position by the first work clamp and the conveyor device, the second work clamp provided in the opposite direction moves. The other end of the plate material is gripped by.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

Referring to FIGS. 1 and 2, the plate material holding device 1 is provided with columns 3 standing upright on the floor at appropriate intervals in the left-right direction (Y-axis direction) of FIG. A support frame 5 having a frame structure is provided on these columns 3. Inside the side plate provided in the Y-axis direction of the support frame 5, guide rails 7 extending from one end of the support frame 5 to a position beyond the center are respectively provided horizontally and below the side plate in the height direction. It is provided on the side. A small guide rail 9 which is parallel to the guide rail 7 and which is also on the upper side is extended from one end of the side plate to the vicinity of the center in the Y-axis direction.

A gutter-shaped conveyor frame 11 having an open upper portion is movably provided on the guide rail 7, and a cylindrical pulley 13 is provided on the upper and left end portions of the upper side of the conveyor frame 11. The pulley 13 is rotatably supported by the conveyor frame 11.
As shown in FIG. 2, the pulley 13 is divided into at least three portions 13A, 13B and 13C at predetermined intervals, and each pulley 13A, 13B and 13C is pivotally supported by a support shaft 15. Each of these pulleys 13A, 13B, 13
A belt 17 formed endlessly with an elastic body such as rubber is wound around C, and constitutes a conveyor device 19.

Each of the belts 13 described above is rotated rightward or leftward along the Y-axis by a drive motor (not shown) attached to the lower surface of the conveyor frame 11 and placed on the belt 17. It is possible to move the placed plate material or the like. The conveyor device 19 is guided by the guide rail 7 by a moving motor provided on the lower surface of the conveyor frame 11 and a rack and pinion (none of which is shown) provided on the lower side of the guide rail 7. Are reciprocated in the Y-axis direction.

A clamp frame 21 is movably provided on the small guide rail 9, and a plurality of first work clamps 23 are attached to the clamp frame 21 at appropriate intervals in the X-axis direction. .. This plurality of first
All of the work clamps 23 are clamp frames 2
It is provided so as to be movable in the X-axis direction along the axis 1, and the clamp position in the X-axis direction of the plate material clamped to this can be selected.

A clamp frame driving motor (not shown) is provided in the clamp frame 21, and, for example, the pinion of the clamp frame driving motor is
The clamp frame 9 is engaged with a rack (not shown) provided on the lower side of the small guide rail 9, and the clamp frame 9 is reciprocated along the small guide rail 9 in the Y-axis direction by the driving of the clamp frame driving motor. To be done.

A second work clamp 25 is provided on the other end side of the supporting frame 5 so as to face the first work clamp 23.
Is provided. The second work clamp 25 is composed of a plurality of work clamps like the first work clamp 23, and is provided at the same height as the first work clamp 23. The gripping portion of the second work clamp 25 is provided with an abutting sensor 27 which is embedded in the gripping portion when it comes into contact with the plate W, and the gripping portion is automatically closed by a signal from the abutting sensor 27. The plate material W can be reliably gripped.

The second work clamp 25 is provided on the clamp frame 29 so as to be movable in the X-axis direction, and like the first work clamp 23, the clamp position of the plate material W in the X-axis direction can be selected. It is provided. The clamp frame 29 is provided with a reinforcing member 31 formed of a U-shaped channel, and a piston rod 35 of a fluid cylinder 33 attached to the support frame 5 is connected to the reinforcing member 31. Therefore, the operation of the fluid cylinder 33 causes the piston rod 35 to move,
The second work clamp 27 is adapted to be moved forward and backward in the Y-axis direction.

Below the second work clamp 25, a push bar 37 is provided below the reinforcing member 31. The push bar 37 is a bar member of a square or round bar and is provided at a height to be brought into contact with the support shaft 15 of the conveyor device 19, and is protruded at least at two positions as shown in FIG. The shafts 15 are brought into contact with each other.

In this embodiment, as shown in FIGS. 1 and 2, a gate-shaped frame 39 is provided outside the support frame 5 near the center in the Y-axis direction, and the gate-shaped frame 39 has a plate material. A W single-taker 41 is provided. The one-piece take-up device 41 includes a fluid cylinder 43 vertically provided on a lower surface of an upper frame of the gate frame 39, and a suction arm 4 provided on a piston rod 45 of the fluid cylinder 43.
7 and a plurality of vacuum pads 49 vertically extending downward from the suction arm 47.

A stacking device 51 for stacking the plate materials W and moving them up and down is provided just below the single-sheet picking device 41 and below the support frame 5. The stacking device 51 includes a plurality of plate materials W.
A plate 53 for loading the plates, the plate 53 and the base 5
The pantograph 57 for connecting 5 to each other and a fluid cylinder (not shown) are provided, and the plate 53 can be moved vertically by the pantograph 57 by the operation of the fluid cylinder.

The plate material holding apparatus 1 of this embodiment having the above-mentioned structure
The operation will be described.

1 and 2, the first work clamp 23 and the conveyor device 19 are moved to the left end side of the support frame 5, and the second work clamp 25 is moved to the right side of the support frame 5 by the fluid cylinder 33. Move to.

First, the fluid cylinder of the loading device 51 is operated to position the plate 53 at a constant height position. That is, the uppermost plate material W loaded on the plate 53 is positioned and fixed at a position slightly lower than the guide rail 7. Next, the fluid cylinder 43 of the single-sheet picking device 41 is operated to bring the vacuum pad 49 into pressure contact with the plate material W, and a separately provided fluid source is operated to adsorb one plate material W and raise the vacuum pad 49 to raise the plate material. One end of W is adjusted to the height of the grip portion of the first work clamp 23. Next, the first work clamp 23 is moved to the right, and the grip portion of the work clamp 23 grips one end of the plate material W.
Next, the vacuum pad 49 is removed from the plate W and the single-sheet picking device 41 is raised to stand by at the original position.
The conveyor device 19 is moved to the right.

When the conveyor device 19 reaches the lower side of the first work clamp 23, the belt 17 is moved to the conveyor device 19 position.
Drive in the direction opposite to the traveling direction. The driving speed is the same as the moving speed of the conveyor device 19. The back surface of the plate material W whose one end is gripped by the drive of the belt 17 is placed on the conveyor device 19 without being scratched, and when the plate material W is completely placed on the conveyor device 19, the conveyor device 19 stops.

The operation will be described below with reference to FIG.
FIG. 3A shows a state in which the plate material W gripped by the first work clamp 23 is placed on the conveyor device 19 and the conveyor device 19 is stopped. Next, when the second work clamp 25 moves forward by the operation of the fluid cylinder 33, the push bar 37 comes into contact with the support shaft 15 of the conveyor device 19 as shown in FIG. This push bar 3
The belt 17 of the conveyor device 19 is rotated in the clockwise direction by the abutment of 7 on the support shaft 15,
9 is retracted in the direction of the arrow in the figure, and the second work clamp 2
5 moves forward in synchronization with the backward speed of the conveyor device 19.
Then, as shown in FIG. 3C, when the end portion of the plate material W is projected from the conveyor device 19, the projecting portion abuts the abutment sensor 27 provided on the second work clamp 25, and the abutment is performed. The sensor 27 is pushed into the grip portion.
When the butting sensor 27 is completely pushed into the grip portion, as shown in FIG.
The gripping part 5 is closed to grip the plate material W, and the fluid cylinder 33
Operation is stopped and the plate material W moves to the first work clamp 23.
And the second work clamp 25.
Then, the conveyor device 19 continues the backward movement and stops at a predetermined position.

As described above, in the plate material holding apparatus 1 of the present embodiment, one end of the plate material W picked up by the first work clamp 23 is held and placed on the conveyor device 19,
The second work clamp 25 is brought closer from the opposite side facing the first work clamp 23, and the other end of the plate W is moved to the second side.
Since the workpiece W is approached until it is gripped by the work clamp 25, the plate W can be automatically held regardless of the length of the plate W in the Y-axis direction. In holding the plate material W, when the clamp positions of the first work clamp 23 and the second work clamp 25 interfere with the processing position of the plate material W to be clamped, the first work clamp 23 side is previously set. It can be displaced in the X-axis direction with the clamp frame 21, and can be avoided in any case by shifting with the clamp frame 29 on the second work clamp 25 side. Therefore, the plate material holding device 1 of the present embodiment can correct the clamp position in the Y-axis direction and the X-axis direction.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0027]

As described above, according to the present invention, since the structure is as described in the claims, the structure is simple without using human hands and automatically according to the size of the plate material. The plate material can be held.

[Brief description of drawings]

FIG. 1 is a side view of a plate holding device according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an operation explanatory view of the main part of FIG.

[Explanation of symbols]

 1 Plate Material Holding Device 19 Conveyor Device 23 First Work Clamp 25 Second Work Clamp 27 Impact Sensor 37 Push Bar

Claims (1)

[Claims] 1. A first work clamp that reciprocates in a predetermined direction by clamping one end of a single plate material, and a plate material clamped by the first work clamp is placed and predetermined. A conveyor device that reciprocates in the direction,
A second work clamp, which is provided so as to reciprocately oppose the first work clamp and has an abutment sensor for clamping the other end of the plate material by abutting the other end thereof, and the second work clamp. And a push bar which is integrated with the conveyor device and contacts the conveyor device to position the conveyor device.