JPH0475093B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a clamping device, and more particularly to a clamping device whose position is adjustable along a clamp guide provided on a carriage to support the clamping device.

B. Prior Art Conventionally, for example, in a numerically controlled turret punch press, etc., the clamper that grips a plate needs to change and adjust the position at which it grips the plate depending on the size, shape, etc. of the plate. These changes and adjustments are often done manually, and power-driven models have complicated and bulky drive mechanisms.

c Problems to be solved by the invention As mentioned above, manually moving and fixing the plate clamper is inefficient and undesirable from a safety standpoint, and power-driven clampers are large-scale and costly. There was a problem with the high cost.

d Means for solving the problem In view of the conventional problems as described above, the present invention has the following features:
A carriage supporting a plurality of clampers for gripping the plate material to be processed is provided to be movable in the X-axis direction, and at least one of the clampers is movable along a clamp guide in the X-axis direction provided on the carriage. and a movable stopper member for regulating the movement of the movable clamper with respect to the movement of the carriage in the X-axis direction in order to adjust the position of the movable clamper with respect to the clamp guide. A clamping device used in a position adjustment device for a plate material clamper, which is provided so as to be retractable in the movement area of the clamper in the X-axis direction, and includes a clamper body equipped with a lower claw for gripping the plate material, and a clamp guide provided on the clamper body. A tension claw capable of tightening and fixing the clamper body is attached and provided, and an upper claw is attached and provided to grip the plate material in cooperation with the lower claw, and the upper claw and the tension claw are operated together. A common cylinder is appropriately attached to the clamper body.

e Function With the above configuration, when the cylinder is operated, both the upper claw and the tensioning claw are operated, so when adjusting the position of the clamper body along the clamp guide, it is possible to easily adjust the position. It gets easier.

f Example Next, an example of the present invention will be described based on the drawings. 1 and 2 show a numerically controlled turret punch press 1 with a clamper position adjustment device. That is, upper and lower turrets 3 and 5
Various types of punches 7 and dies 9 are placed on the upper and lower sides, respectively, and a desired pair of punches 7 and dies 9 are placed on the upper and lower sides.
By rotating the lower turrets 3 and 5, they are positioned directly below the striker 11. The plate material to be processed (not shown) is held by a clamper 13, and the carriage 15 to which the clamper 13 is attached is
The carriage base 21 is moved in the X direction (up and down in the drawing) by the motor 17 and the feed screw 19, and the carriage base 21 to which the carriage 15 is attached is moved by the motor 23.
to move in the Y direction (left/right direction in the drawing). Therefore, the desired processing position of the plate material can be positioned between the punch 7 and the die 9, which are positioned directly below the striker 11, and processing such as punching can be performed.

FIG. 3 shows details of the clamper 13.
That is, the clamper 13 has a dovetail groove formed by the clamper body 27 and the tension claw 29 in the dovetail clamp guide 25 fixed to the carriage 15.
They are slidably attached by engaging with each other. The tension claw 29 is attached to the clamper body 27 with a pin 31, and a cylinder 33 is attached to the upper surface of the tension claw 29. cylinder 3
Piston rod 3 of piston 35 provided in 3
The upper claw 39 of the clamper is attached to the tip of the connecting pin 4.
1, and the upper claw 39 is rotatably attached to a lower claw 43 formed integrally with the clamper body 27 and a pin 45.

When compressed air for clamping is not supplied to the cylinder 33, the piston 35 is moved by the spring 47.
, the upper claw 39 rotates clockwise around the pin 45, and the upper claw 39 and the lower claw 43
There is no clamping force with. Further, since the tension claw 29 does not have the force to tighten the clamp guide 25, the tension claw 29 lightly presses the clamp guide 25 by the spring 49 provided between the tension claw 29 and the clamper main body 27.

When compressed air for clamping is supplied to the air chamber 51 of the cylinder 33, the piston 35 and the piston rod 37 rise, the upper claw 39 rotates counterclockwise around the pin 45, and the gap between it and the lower claw 43 increases. grip the plate material (not shown). At the same time cylinder 3
3 moves downward, and the tensioning claw 29 touches the pin 31.
The clamper 13 is fixed by rotating counterclockwise around the center and tightening the clamp guide 25.

Plate material support table 5 of turret punch press 1
3 is provided with a stopper 55 as shown in FIG. 6 at a position through which the clamper 13 passes, and a pin 57 serving as a stopper member is configured to protrude and retract from the upper surface of the support table 53 by means of a cylinder 59.

In such a configuration, when changing the position of the clamper 13, the cylinder 3 of the clamper 13
3 is removed, the force of the clamping claw 29 tightening the clamp guide 25 is released, and the pin 57 of the stopper 55 is made to protrude above the plate material support table 53.

Next, when the X-direction feed motor 17 is activated and the carriage 15 is moved in the (-X) direction (see Figure 2), the clamper 13 comes into contact with the pin 57, and when the carriage 15 is further moved, the clamper 13
stops in contact with the pin 57, and the clamp guide 25 of the carriage 15 (see Fig. 3)
move in the opposite direction along In this example, the distance between the two clampers is narrow, but if it is desired to widen the distance, the stopper 55 may be positioned between the two clampers.

After moving the clamper 13 to the desired position,
When a plate material is inserted between the upper and lower claws 39 and 43 and compressed air is supplied to the cylinder 33, the plate material is gripped by the upper and lower claws, and at the same time, the tensioning claw 29 tightens the clamp guide 25, and the clamper 13 is moved to the carriage. It is fixed at 15. Also, pin 5 of stopper 55
7 is lowered from the surface of the plate support table so that the movement of the clamper is not hindered.

As mentioned above, the plate material clamper position adjustment device uses the piston rod of one cylinder and the reaction force of the cylinder to grip and release the plate and fix and release the clamper. 27 and piston rod 37
A cam may be attached to the piston rod, and the clamp guide 25 may be tightened by pulling the clamping pawl 29 left and right during the upward movement of the piston rod.

g. Effects of the Invention As can be understood from the above description of the embodiments, the present invention basically provides a carriage 15 that supports a plurality of clampers 13 that grip a plate material to be processed.
is provided to be movable in the X-axis direction, and at least one of the clampers 13 is provided to be movable along a clamp guide 25 in the X-axis direction provided in the carriage 15. In order to adjust the position of the movable clamper 13, a stopper member 57 for regulating the movement of the movable clamper 13 with respect to the movement of the carriage 15 in the X-axis direction is moved in the X-axis direction of the movable clamper 13. This is a clamping device used for a position adjustment device for a plate material clamper, which is provided so as to be able to move in and out of a moving area. 27 is attached with a tensioning claw 29 which can be tightened and fixed, and an upper claw 39 is attached and provided which cooperates with the lower claw 43 to grip the plate material, and the upper claw 39 and the tensioning claw 29 are attached. A common cylinder 33 for operating together is appropriately attached to the clamper main body 27.

As is clear from the above configuration, in the present invention, the clamper body 27 equipped with the lower claw 43 for gripping the plate has an upper claw 3 that cooperates with the lower claw 43.
9 is attached to the clamper body 27, and a tensioning claw 29 capable of fixing the clamper body 27 to the clamp guide 25 is also attached. It is a configuration operated by.

According to the invention, therefore, the shared cylinder 3
3, both the upper claw 39 and the tensioning claw 29 are operated, and even though the clamp device is capable of adjusting the position of the clamper body 27 along the clamp guide 25, only one cylinder is required. This simplifies the configuration.

[Brief explanation of drawings]

1 and 2 are a front view and a plan view, respectively, of a numerically controlled turret punch press to which the present invention is applied, and FIGS. 3, 4, and 5 are a plan view, respectively, of the present invention. They are a front view and a side view. FIG. 6 is an explanatory diagram of the - cross section of FIG. 2. Explanation of symbols representing main parts in the drawings, 1...
...Numerically controlled turret punch press, 3... Upper turret, 5... Lower turret, 13... Clamper, 15... Carriage, 19... Feed screw, 2
1... Carriage base, 25... Clamp guide, 27... Clamper body, 29... Tightening claw, 31
... Pin, 33 ... Cylinder, 35 ... Piston, 37 ... Piston rod, 39 ... Upper claw, 4
1... Connecting pin, 43... Lower claw, 45... Pin,
47...Spring, 53...Plate support table, 55
...stoppa, 57...pin.

Claims (1)

[Claims] 1 Multiple clampers 1 that grip the plate material to be processed
A carriage 15 that supports 3 is provided movably in the X-axis direction, and at least one of the clampers 13 is provided so as to be movable along a clamp guide 25 in the X-axis direction provided on the carriage 15, In addition, in order to adjust the position of the movable clamper 13 with respect to the clamp guide 25, a stopper member 57 that restricts the movement of the movable clamper 13 with respect to the movement of the carriage 15 in the X-axis direction is moved. The clamping device is used as a position adjustment device for a plate material clamper that is provided so as to be retractable in the movement area of the clamper 13 in the X-axis direction, and the clamper body 27 is provided with a lower claw 43 for gripping the plate material. The clamp guide 25 is provided with a tensioning claw 29 that can tighten and fix the clamper body 27, and an upper claw 39 that cooperates with the lower claw 43 to grip the plate material is mounted and provided. and a common cylinder 33 for operating the clamping claws 29 together, is suitably mounted on the clamper body 27.