JPH0541647U - Plate positioning device for plate processing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To improve plate positioning accuracy. [Structure] The plate material positioning device 40 includes an end locator 41 with which the end surface of the plate material can abut, and a groove portion 47 that movably supports the end locator 41 in the Y-axis direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plate material positioning device, and more particularly to a plate material positioning device for a plate material processing machine for positioning a plate material on a work table of the plate material processing machine.

[0002]

[Prior art and its problems]

 For example, a plate material processing machine such as a punch press machine is generally provided with an end locator for laterally positioning the plate material on a work table. This end locator is arranged on the front side of the work table on the side of the work table. Further, the positioning of the plate material in the front-rear direction is performed by the end portion of the gripping portion of the work holder arranged at the front end portion of the work table.

When positioning the plate material, for example, the plate material is carried into the work table by a plate material carrying-in device such as a loader, and the end surface of the plate material is brought into contact with the end portions of the end locator and the work holder gripping part. Positioning is performed in the left-right direction and front-back direction. However, the conventional end locator is fixed to the work table side on the front end side of the work table. Therefore, depending on the size of the plate material, the positioning cannot be performed stably, and the positioning accuracy may deteriorate.

An object of the present invention is to improve the positioning accuracy of a plate material.

[0005]

[Means for Solving the Problems]

 A plate material positioning device for a plate material processing machine according to the present invention is a device for positioning a plate material on a work table of a plate material processing machine, and includes a contact portion and a support portion. The abutting portion is arranged laterally of the work table so that the end surface of the plate material can abut. The support part is arranged between the work table and the contact part, and supports the contact part so as to be movable in the front-back direction of the work table.

[0006]

[Action]

 In the present invention, the abutment portion is movable in the front-back direction of the work table by the support portion. Therefore, by appropriately moving the abutting portion to the front and rear of the work table in accordance with the size of the plate material, it is possible to perform stable positioning in accordance with the plate material size and improve positioning accuracy.

[0007]

【Example】

 1 and 2 show a punch press machine as a plate material processing machine to which an embodiment of the present invention is adopted. The punch press machine 1 is mainly configured by a lower frame 2, an upper frame 3 arranged above the lower frame 2, and a throat portion 4 supporting the upper frame 3 at the rear.

A fixed table 10 is arranged at the center of the upper surface of the lower frame 2. A pair of guide rails 5 and 6 are arranged on both sides of the upper surface of the lower frame 2. A carriage 7 is arranged on the guide rails 5 and 6 so as to be movable in the depth direction (Y-axis direction). On the carriage 7, movable tables 8 and 9 arranged on both sides of the fixed table 10 are fixed. The movable table 8 and 9 and the fixed table 10 constitute a work table. The carriage 7 is provided with a cross slide 15 having a pair of work holders 13 and 14 for holding the plate material 11 so as to be movable in the left-right direction (X-axis direction). In addition, a positioning end portion for positioning the plate member 11 in the Y-axis direction is provided in the grip portion of each of the work holders 13 and 14. A sensor for detecting the contact of the plate member 11 is provided at the positioning end. The moving mechanism of the carriage 7 is arranged below the moving table 9, and is composed of a servo motor 16, a ball screw 17 connected to the servo motor 16, and a ball nut 18 screwed to the ball screw 17. The ball nut 18 is fixed to the lower surface of the moving table 9. On the other hand, the moving mechanism of the cross slide 15 is arranged in the carriage 7, and is screwed to the servo motor 20 arranged at the left end portion in the carriage 7, the ball screw 21 connected thereto, and the ball screw 21. And a ball nut 23. The ball nut 23 is fixed to the cross slide 15.

An upper turret 12 that houses a plurality of punches is rotatably provided on the upper frame 3. The upper turret 12 is provided with a patch head that moves up and down by a crank mechanism (not shown). On the other hand, on the lower frame 2 side, a lower turret 22 that houses a plurality of dies is arranged to face the upper turret 12. A die head is provided on the side of the lower turret 22, and the die head is arranged to face the punch head. The punching head and the die head constitute a processing head 25.

A positioning device 40 according to an embodiment of the present invention is provided on the side of the moving table 8. The positioning device 40 mainly includes an end locator 41 with which the end surface of the plate member 11 can come into contact, a guide block 42 that supports the end locator 41, and a cylinder 43 that drives the guide block 42.

A sensor 44 is provided on the end surface of the end locator 41 on the plate member 11 side to detect that the end surface of the plate member 11 is in contact. Inside the guide block 42, a cylinder 45 for driving the end locator 41 up and down is arranged. The tip of the piston rod 45a of the cylinder 45 is connected to the lower portion of the end locator 41. Further, on the end surface of the guide block 42 on the moving table 8 side, a protruding portion 46 that protrudes toward the moving table 8 and extends in the Y-axis direction is formed. The protrusion 46 has a T-shaped cross section. On the other hand, on the end surface of the moving table 8, a groove portion 47 having a T-shaped cross section extending in the Y-axis direction is formed. The protrusion 46 of the guide block 42 is engaged in the groove 47, and the guide block 42 is movable in the groove 47 in the Y-axis direction. In addition, a plurality of recesses 48 are formed on the side wall of the groove 47 in the Y-axis direction. A cylinder 49 is horizontally provided at the other end of the guide block 42. The piston rod 49a of the cylinder 49 is horizontally inserted through the guide block 42 and the protrusion 46. A tapered stopper 60 is provided at the tip of the piston rod 49a, and the stopper 60 can be engaged with the recess 48 on the moving table 8 side. As a result, the end locator 41 can be locked at any position in the Y-axis direction.

A control panel 30 is arranged on the side of the throat section 4. A keyboard 31, a tape reader 32, etc. are arranged on the control panel 30. A control unit 30 as shown in FIG. 4 is arranged in the throat unit 4. The control unit 30 includes a microcomputer including a CPU, ROM, RAM and the like. A keyboard 31, a tape reader 32, a processing head 25, and servomotors 16 and 20 are connected to the control unit 30. Further, the control unit 30 is connected with a cylinder 45 for raising and lowering the end locator, a drive control unit 46 for the end locator moving cylinder 43, a cylinder 49 for driving the stopper, a sensor 44 and other input / output units.

On the other hand, the cylinder 43 is connected to a 4-port 3-position switching valve 50 with a solenoid valve. The solenoids 51 and 52 of the switching valve 50 are connected to the cylinder drive controller 46. Further, the cylinder 43 is provided with a sensor 53 for detecting the moving position of the piston rod 43a. The detection signal of the sensor 53 is input to the cylinder drive control unit 46.

The punch press machine 1 described above is controlled by the control unit 30 and operates as described below. 5 and 6 are control flowcharts thereof. When the program starts, initial settings such as setting the moving tables 8 and 9, the carriage 7 and the end locator 41 to initial positions are made in step S1 of FIG. In this initial setting, the end locator 41 is immersed in the guide block 42, and the guide block 42 is moved to the cylinder 43 side. Next, in step S2, a work start command is waited for. When a work start command is input from the keyboard 31, the process proceeds to step S3. In step S3, the first command step of the NC program is read.

In step S5, it is determined whether or not the read command step is a plate material movement command. If not, the process proceeds to step S6, and it is determined whether or not the command step is a plate material processing command. In step S7, it is determined whether the command step is a command to perform another process. Then, in step S8, it is determined whether or not all the command steps of the NC program have been processed. If the command step still remains, the process returns to step S4 to read the next command step.

If it is determined in step S4 that the plate material movement command has been issued, the process proceeds to step S9, and the positioning subroutine shown in FIG. 6 is executed. 6, in step S10, the cylinder 43 is driven to move the guide block 42 and the end locator 41 in the Y-axis direction. When the cylinder 43 is driven, the cylinder drive control unit 46 switches and controls the switching valve 50 based on the plate material information (especially size) read from the NC program.

For example, in the case of a large plate material, the solenoid 52 is turned on to retract the piston rod 43a of the cylinder 43. As a result, the end locator 41 moves together with the guide block 42 in the Y-axis direction to the cylinder 43 side (see the chain double-dashed line in FIG. 4). The movement amount of the piston rod 43a is detected by the sensor 53, and this detection signal is input to the cylinder drive control unit 46. When the end locator 41 moves to a predetermined position, the solenoid 52 is turned off and the switching valve 51 is switched to the neutral position C. As a result, the end locator 41 is arranged at a predetermined position in the Y axis direction. Next, in step S11, the stopper 60 is projected through the piston rod 49a by driving the cylinder 49. As a result, the stopper 60 engages with the recess 48 on the movable table 8 side, and the end locator 41 is locked in the Y-axis direction. Next, in step S12, the piston 45 a is projected by driving the cylinder 45, and the end locator 41 is projected above the moving table 8.

Next, in step S13, the completion of positioning is awaited. This positioning process is performed by a loader (not shown) as a plate material loading device. That is, the loader holding the plate material 11 is carried in above the moving tables 8 and 9, and the loader moves the plate material 11 on the moving tables 8 and 9 toward the end locator 41 and the work holders 13 and 14. When the plate material end face comes into contact with the sensor 44 of the end locator 41 and the positioning end portions in the grips of the work holders 13 and 14 due to the movement of the plate material, the sensors of the sensor 44 and the work holders 13 and 14 cause the plate material to move. The contact signal is detected and a detection signal is output. When the detection signal from each sensor is input to the control unit 30, the positioning process of the plate material is completed, and the program proceeds from step S13 to step S14. In step S14, one end of the plate material 11 is gripped by the work holders 13 and 14. Next, in step S15, the end locator 41 is lowered by driving the cylinder 45. After the processing in step S15, the program returns to the main routine of FIG. 5 and proceeds to step S16. In step S16, the cross slide 15 and the carriage 7 are moved in the X-axis and Y-axis directions by driving the servo motors 16 and 20, respectively, and the plate member 11 is moved.

If the command step read in step S4 is determined to be a plate material processing command, the process proceeds from step S6 to step S17. In step S17, desired punches and dies are selected by rotating the turrets 12 and 22. Then, using the selected punches and dies, the processing head 25 performs processing according to the NC program on the plate material 11.

If the command step read in step S4 is a step for commanding other processing, the process proceeds from step S7 to step S18. In step S18, processing according to the command is performed. When all the steps have been read, the determination in step S8 becomes Yes, and the operation of this punch press machine ends.

In this embodiment, since the end locator 41 automatically moves in the Y-axis direction according to the plate material information read from the NC program, stable positioning is possible for plate materials of various sizes. The positioning accuracy can be improved. [Other Embodiments] In the above embodiment, the cylinder 43 and the drive control unit 46 thereof are used to automatically move the end locator 41 in the Y-axis direction. The configuration may be omitted.

In this case, for example, the operator may move the end locator 41 to an appropriate position in the Y-axis direction every time the lot of plate material changes.

[0023]

[Effect of the device]

 According to the plate material positioning device for a plate material processing machine of the present invention, since the abutting portion with which the plate material end surface can abut is movable in the work table front-back direction, the plate material positioning accuracy can be improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a punch press machine according to an embodiment of the present invention.

FIG. 2 is a partial plan view thereof.

FIG. 3 is an enlarged partial view of FIG.

FIG. 4 is a schematic block diagram of a control unit of the punch press machine.

FIG. 5 is a control flowchart thereof.

FIG. 6 is a control flowchart thereof.

[Explanation of symbols]

 1 Punch press machine 8, 9, 10 Work table 11 Plate material 41 End locator 46 Projection part

Claims (1)

[Scope of utility model registration request] 1. A plate material positioning device for a plate material processing machine for positioning a plate material on a work table of a plate material processing machine, the contacting part being arranged laterally of the work table and capable of contacting an end surface of the plate material. A plate material positioning device for a plate material processing machine, comprising: a support part, which is disposed between the work table and the contact part and movably supports the contact part in the front-back direction of the work table.