JP2000126833A - Work supply device and work supply method using the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work supply device, which does not supply plural sheets of a work to a sheet working machine, by detecting a sheet thickness when clamping the work. SOLUTION: A work supply device has a work clamp detection means 35 to detect the position where an upper clamper 1 clamps a work W, a comparison means 60 to compare a detected value (t) by the work clamp detection means 35 with a work sheet thickness T inputted beforehand and an alarm means 61 to send an alarm when the detected value (t) is different from the work sheet thickness T.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work supply apparatus, and more particularly, to a work supply apparatus and a work supply apparatus which detect a thickness of a work when the work is clamped so as not to supply a plurality of works to a plate processing machine. It relates to the work supply method to be used.

[0002]

2. Description of the Related Art Conventionally, a manipulator 74 as a work supply device is installed in front of a plate processing machine, for example, a panel bender 70 (FIG. 6) via a positioning table 75 (FIG. 6A). And the manipulator 7
4, a pipe roller table 79 and a single sheet take-out device 78 are provided.

[0003] With this configuration, the work W picked up by the sheet picking device 78 is transferred to the pipe roller table 79.
And the pre-origin is set by the preset bar 80.

[0004] Then, the work W set at the pre-origin is set.
Is gripped by the gripper 76, transported on the pipe roller 81, loaded into the positioning table 75, and
7, the origin is set.

The work W whose origin is set is clamped by the upper clamper 82 (FIG. 6A) and the lower clamper 83 of the manipulator 74, and the side to be bent is rotationally positioned and then moved in the Y-axis direction. And bending position M (Fig. 6
(B)), and is bent by a bend beam 73 that is pinched and rotated by a top die 71 and a bottom die 72.

[0006]

However, the above conventional technique (FIG. 6) has the following problems.

That is, in FIG. 6A, when the single-sheet picking device 78 cannot pick up one piece of the work W for some reason or when the single-sheet picking device 78 is not installed,
A plurality of works W may be carried into the positioning table 75.

As a result, the manipulator 74 serving as a work supply device supplies a plurality of works W to the panel bender 70 (FIG. 6B), and corrects the top die 71, the bottom die 72, and the bend beam 73. Bending mold 73A
Excessive pressure acts on the reverse bending mold 73B and the mold is damaged.

The same applies to the work supply device of a shearing machine, which is a shearing machine. The work supply device supplies a plurality of works.
The lower blade and upper blade of the shearing machine are damaged.

[0010] An object of the present invention is to provide a work supply apparatus that detects a plate thickness when a work is clamped, thereby preventing a plurality of works from being supplied to a plate processing machine.

[0011]

In order to solve the above-mentioned problems, the present invention clamps a work W by an upper clamper 1 and a lower clamper 2 as shown in FIGS. Clamping unit 3 for detecting the position when the upper clamper 1 clamps the workpiece W in the workpiece supply device for supplying the workpiece W to the plate processing machine.
5, the detected value t by the work clamp position detecting means 35
Means 6 for comparing the workpiece thickness T with a previously input workpiece thickness T
0 and an alarm means 61 for issuing an alarm when the detected value t is different from the workpiece thickness T, and (1) the thickness T of the workpiece W as shown in FIG. Inputting work information including
(2) loading the work into the positioning table;
(3) lowering the upper clamper 1 to clamp the loaded work; (4) detecting the position when the upper clamper 1 clamps the work W; and (5) performing the step (4). The detected value t is
(1) a step of comparing the work thickness T inputted in the step (1), and (6) a step of issuing an alarm when the detected value t is different from the work thickness T. Is taking appropriate measures.

Therefore, according to the configuration of the present invention, the detected value t detected by the work clamp position detecting means 35 is
By comparing with the work thickness T inputted in advance, if both are different, an alarm is issued to give a warning to the operator, so that a plurality of works W are not supplied to the work material processing machine 30, Damage to the molds 33A and 33B is prevented.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 is an overall view showing an embodiment of the present invention.

In FIG. 1, a plate processing machine 30 is, for example, a panel bender.

The panel bender 30 has a top die 31 which can be moved up and down, sandwiches a work W in cooperation with a bottom die 32, and forms a bend beam 33 having a forward bending die 33A and a reverse bending die 33B. This is an ironing bending machine that bends the work W by turning vertically.

In front of the panel bender 30, a manipulator 34 as a work supply device is provided via a positioning table 41. .

The manipulator 34 has, for example, a C-shaped frame 39. An upper clamper 1 is mounted on an upper mounting member 39A on the C-shaped frame 39, and a lower mounting member 39B is mounted on the lower mounting member 39B (FIG. 2A). , The lower clamper 2 are attached.

The upper clamper 1 is mounted on a clamp arm 6, which has a linear motion bearing 7.
3 and is connected to the piston rod 8 of the clamp cylinder 5 via a bracket 9, and the clamp cylinder 5 is fixed to the mounting member 39A via the bracket 9.

With this configuration, the upper clamper 1 moves in the vertical direction, and clamps or unclamps the work W in cooperation with a lower turret 2 described later.

The upper clamper 1 has a built-in bearing, and is adapted to rotate when the lower clamper 2 rotates with the work W clamped.

The lower clamper 2 is disposed directly below the upper clamper 1, and is rotatably mounted by a motor M fixed to a mounting member 39B and a reduction gear 4 via a bracket 3 (FIG. 2A). By rotating the clamped work W together with the upper clamper 1, the side to be bent is selected.

The entire C-shaped frame 39 of the manipulator 34 is slidably connected to a guide rail 45 laid on a base 38 (FIG. 2A) and has a ball screw 3
7, a nut 36 is screwed, and the ball screw 37 is connected to the Y-axis motor My.

The positioning table 41 has a gap 4
6 (FIG. 1) is formed, and the C-shaped frame 39 of the manipulator 34 is inserted into the gap 46.

With this configuration, when the Y-axis motor My is driven to rotate the ball screw 37, the manipulator 34
The C-shaped frame 39 moves on the guide rail 45 along the gap 46 in the front-rear direction (Y-axis direction).

Accordingly, the workpiece W clamped by the upper clamper 1 and the lower clamper 2 and whose side to be bent is selected is bent at the bending position M (FIG. 2) according to the flange size.
(A)) can be positioned.

Further, a work clamp position detecting means 35 is provided on the mounting member 39A on the manipulator 34 (FIG. 1), and details thereof are as shown in FIG.

The work clamp position detecting means 35 detects the position when the upper clamper 1 clamps the work W (steps 106 to 107 in FIG. 5).

The work clamp position detecting means 35 includes, for example, a detecting head 35B and a linear scale 35A read by the detecting head 35B.

The detection head 35B is mounted on the back side of the clamp arm 6, and the linear scale 35A is mounted on a mounting member 39A.

With this configuration, when the work W is carried into the positioning table 41 (FIG. 3A), the clamp cylinder 5 operates to lower the upper clamper 1 attached to the clamp arm 6 (FIG. 3). (B)) The position when the upper clamper 1 clamps the work W in cooperation with the lower clamper 2 is determined by the work clamp position detecting means 3.
The detection is performed by the detection head 35B of No. 5 reading the scale value of the linear scale 35A.

The work clamp position detecting means 3
5 may be built in the clamp cylinder 5.

The work clamp position detecting means 35 is connected to a comparing means 60 (FIG. 1). The comparing means 60 has an alarm means 61, an input means 62 and a storage means 63.

The comparing means 60 is, for example, NC, and the read signal S from the work clamp position detecting means 35 is read.
1 is received, the detected value t of the work clamp position detecting means 35 is compared with the plate thickness T which is pre-input work information, and when both are different (step 10 in FIG. 5).
No. 8), an emergency measure is taken, for example, by transmitting an alarm signal S3 to an alarm means 61 described later.

The alarm means 61 is a monitor, a buzzer, a lamp, and the like. As described above, the alarm means 61 receives the alarm signal S3 from the comparing means 60 and issues an alarm to warn the worker. I have.

The input means 62 is constituted by a mouse, a keyboard, or the like, and by inputting work information such as the thickness T, shape, and length of the work W (step 10 in FIG. 5).
1) Create a machining program (Step 10 in FIG. 5)
1) The created machining program is stored in the storage means 63.

On the other hand, on the side of the manipulator 34 (FIGS. 1 and 2B), a pipe roller table 40 and a single-sheet picking device 50 are provided.

The single-sheet pick-up device 50 has a beam column frame 51, which surrounds a hydraulic lifter 59 (FIG. 1) and a material pallet P thereon. W is integrated.

A guide rail 52 extends from the beam frame 51 toward the pipe roller table 40, and a loader 53 is attached to the guide rail 52 so as to be able to run on its own. The stretch 54 is attached via a vertical guide 56.

A plurality of suction pads 57 are attached to the stretch 54, and the work W on the material pallet P
Are taken out one by one by suction.

The pipe roller table 40 has a preset bar 44. The workpiece W conveyed by the single-sheet pick-up device 50 is abutted against the preset bar 44 to set a pre-origin.

The pipe roller table 40 has a rotatable pipe roller 45. The workpiece W set at the pre-origin is gripped by the gripper 43 and transported on the pipe roller 45, and then the positioning table 41 And is set at the origin by abutting against the pin gauge 42 (step 103 in FIG. 5).

Hereinafter, the operation of the present invention having the above configuration will be described.
A description will be given based on FIG. 4 and FIG.

(1) Operation from input of work information to setting of origin of work W (steps 101 to 10 in FIG. 5)
3).

First, in step 101 of FIG. 5, work information is input, in step 102, a machining program is created, and in step 103, the work W is loaded and the origin is set.

That is, by inputting work information such as the thickness T, shape, and length of the work W from a mouse, a keyboard, or the like of the input means 62 (FIG. 1), a machining program is created, and the created machining program is created. Are stored in the storage means 63 (FIG. 1).

In this state, one work W is taken out by the single work take-out device 50, and the work W is set at the pre-origin by the pipe roller table 40.
Then, the original is set by contacting with the pin gauge 42 (FIG. 4A).

(2) Operation from movement of the manipulator 34 to detection of the work clamp position (steps 104 to 107 in FIG. 5).

Next, in step 104 of FIG. 5, the manipulator 34 is moved. In step 105, the upper clamper 1 starts lowering. In step 106, the upper clamper 1 stops and clamps the work W. At 107, the work clamp position is detected.

That is, when the work W is set at the origin on the positioning table 41 (FIG. 4 (A)), the manipulator 34 advances (FIG. 4 (B)), and the upper clamper 1 is moved to substantially the center of the work W. Stop when you come over the part.

Then, this time, the clamp cylinder 5 operates and the upper clamper 1 starts lowering, and the upper clamper 1 stops lowering and clamps the central portion of the work W (FIG. 4 (C)). .

At this time, the work clamp position detecting means 3
5 by reading the scale value of the linear scale 35A, the read signal S1 is transmitted to the comparing means 60 (FIG. 1), and the comparing means 60 detects the detection value t.
Is calculated.

(3) Generation of an alarm and emergency stop of the machine (steps 111 to 113 in FIG. 5).

Next, in step 108 of FIG.
It is determined whether or not the detected value t is equal to the work plate thickness T. If not (NO), in step 111,
Unclamp the work W, and in step 112,
An alarm is displayed, and in step 113, the machine is emergency stopped.

That is, in the comparing means 60, the calculated detection value t is compared with the work thickness T inputted in advance.

Then, for example, when the detected value t is the work plate thickness T
If it is larger and 3T (the right diagram in FIG. 4C), the comparing means 60 transmits the emergency stop signal S2 (FIG. 1) to the panel vendor 30 and sends the alarm signal S3 to the alarm means 61. Send to

As a result, the clamp cylinder 5 is operated to raise the upper clamper 1 to unclamp the clamped work W. The alarm means 61 displays an alarm on a monitor or the like to give a warning to the operator. Further, the panel bender 30 is brought to an emergency stop.

As a result, the plurality of works W are not supplied to the panel bender 30, and the dies 31, 32, 33
A and 33B (FIGS. 1 and 2) are prevented from being damaged.

(4) Positioning of work W and bending operation.

However, in step 108 of FIG.
If it is determined that the detected value t is equal to the work plate thickness T (YES, middle view of FIG. 4C), the work W is supplied to the panel bender 30 in Step 109, and Step 1 is performed.
At 10, bending is performed.

In the above-described embodiment, the panel bender 30 has been described in detail. However, the present invention is not limited to this, and may be applied to other plate processing machines, for example, a shearing machine, and the same effects are naturally obtained. It is.

[0061]

As described above, according to the present invention, the work supply device is provided with a work clamp position detecting means for detecting a position when the upper clamper clamps the work W, and a value detected by the work clamp position detecting means. The detection means detects the value detected by the work clamp position detection means in advance, by comprising a comparison means for comparing the work thickness with the work thickness input in advance, and an alarm means for issuing an alarm when the detected value is different from the work thickness. Compared to the input work plate thickness, if both are different, an alarm can be issued to give a warning to the operator, so that a plurality of works W are not supplied to the plate processing machine,
This has the effect of preventing damage to the mold and the like.

[0062]

[Brief description of the drawings]

FIG. 1 is an overall view showing an embodiment of the present invention.

FIG. 2 is a side view and a top view of FIG.

FIG. 3 shows a work clamp position detecting means 35 according to the present invention.
FIG.

FIG. 4 is a diagram illustrating the operation of the present invention.

FIG. 5 is a flowchart for explaining the operation of the present invention.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 REFERENCE SIGNS LIST 30 panel bender 34 manipulator 35 work clamp position detecting means 37 ball screw 39 C-shaped frame 40 pipe roller table 41 positioning table 42 pin gauge 43 gripper 44 preset bar 50 single-sheet pick-up device 60 comparing means 61 alarm means 62 input means 63 storage means

Claims (4)

[Claims] 1. A work supply device for clamping a work by an upper clamper and a lower clamper and supplying the clamped work to a plate material processing machine, wherein a work clamp position detection for detecting a position when the upper clamper clamps the work. Means comprising: means for comparing a value detected by the workpiece clamp position detecting means with a previously input workpiece thickness; and alarm means for issuing an alarm when the detected value differs from the workpiece thickness. Feeding device. 2. The apparatus according to claim 1, wherein said work clamp position detecting means comprises a detecting head and a linear scale.
Work supply device according to the above. 3. The work supply device according to claim 1, wherein the detection head is mounted on a clamp arm of an upper clamper, and a linear scale is mounted at a position facing the linear scale. 4. A step of inputting work information including a thickness of the work, a step of loading the work into the positioning table, and a step of lowering the upper clamper to clamp the loaded work. (4) a step of detecting the position of the workpiece when the upper clamper clamps the workpiece; (5) a step of comparing the detection value detected in the step (4) with the workpiece plate thickness input in the step (1). And (6) a step of issuing an alarm when the detected value differs from the workpiece plate thickness.