JPH1159874A - Work piece dropping down mistake preventing device for work piece shooter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work piece dropping down mistake preventing device for a work piece shooter whereby a work piece can be discharged to drop down without resistance on a free bear in the case of taking out the work piece after punch press work, by providing the free bear able to protrude/sink in a shooter table of the work piece shooter. SOLUTION: In a work piece shooter in a plate material work machine of turret punch press or the like, a work piece press up mechanism A having a free bear 1 able to protrude/sink is provided in a shooter table 5, in the case of taking out a work piece W after work by this work piece press up mechanism A, the work piece W is discharged to drop down in a manner wherein it is floated from a surface of the shooter table 5, and a work piece dropping down mistake is previously prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work shooter for a work shooter of a plate processing machine such as a turret punch press, which prevents a work from being dropped by a work.

[0002]

2. Description of the Related Art A work shooter such as a turret punch press is arranged so that its shooter table is surrounded by fixed tables such as a reposition table and a center table. Although the mechanism is designed to be able to move up and down on the table in order to prevent interference with the clamp device to be clamped, it is customary that the shooter table of the work shooter is not provided with a free bear.

FIGS. 2A and 2B show a work lifting mechanism A.
In the case of a conventional table that does not use a free table, in a fixed table such as a center table, the free bear has a mechanism that can move up and down to prevent interference with the clamp device, but it is difficult to provide a similar mechanism on the shooter table. It is the current situation.

In addition, for example, in the case of a product having a corner R, that is, in the case of processing a product in which microjoining cannot be performed, the work W can be performed without stopping the operation of the processing machine body.
Is a very useful and convenient device.

[0005]

However, in the above-mentioned conventional example, when the oil or grease such as grease adheres to the surface of the work, the work comes into close contact with the shooter table of the work shooter and can slide down. There is a problem that there is a possibility that a so-called drop mistake may occur, for example, a trouble may occur due to being caught in the middle.

The present invention has been made in view of the above-mentioned point, and a work carrier is provided with a free bear which can freely move in and out of a shooter table, and when the work is taken out after punch press processing, the work has a resistance on the free bear. It is an object of the present invention to provide a work shooter work fall error prevention device which can be dropped and discharged without any trouble.

[0007]

The present invention can solve the above-mentioned problems by providing the following constitution.

(1) In a work shooter of a plate material processing machine such as a turret punch press, a work lifting mechanism having a free bearer which can freely move in and out of a shooter table is provided.
This work lifting mechanism prevents the work from falling out of the work shooter by lifting and discharging the work from the surface of the shooter table when taking out the work after processing. apparatus.

(2) The work lifting mechanism suspends, via a spring, a free bear base on which a free bear is mounted on the lower surface of a shooter table inclined downward by the action of a cylinder / piston about a hinge located on the processing machine side as a fulcrum. The shooter table is provided with a hole large enough to allow the free bear to look into its head, and when the shooter table is inclined downward and reaches a predetermined angle, the free bear base is lowered from below. An arm with rollers is placed on the side of the stand for the shooter table to push up the spring in the direction of compressing the spring against the force of the spring, and the work floats on the free bear with its head protruding from the surface of the shooter table The workpiece is placed in such a way that the workpiece is safely dropped and discharged to a predetermined position. The device for preventing a work from being dropped by a work shooter according to the above (1), characterized in that:

[0010]

Embodiments of the present invention will be described below.

FIG. 1 (a) is a longitudinal sectional side view showing a main part of a work fall prevention device for a work shooter according to the present invention, and FIG. 1 (b) is a view showing an operation state of a work shooter when a work is dropped and discharged. FIG. 2A is a plan view showing a situation around a conventional work shooter, and FIG. 2B is an enlarged vertical sectional view taken along line AA of the conventional example.

Referring to the drawings, reference numeral 1 denotes a free bear (here, a free bear is made up of a hard sphere such as metal or synthetic resin, and a pedestal thereof. 2 means a free-bear base, 3 is a spring (spiral spring), 4 is a hole, 5 is a shooter table, and is a lower surface of the shooter table 5. A free bear base 2 is suspended via a spring 3, the free bear 1 is placed on the upper surface of the free bear base 2, and a hole 4 is formed in the shooter table 5. The hole 4 is large enough to allow the free bear 1 to protrude. When the shooter table 5 tilts downward and the tilt angle reaches a predetermined angle, the shooter table 5 just hits the vicinity of the lower surface center of the free bear base 2 from below. Then, the roller 6 is rotatably supported by the tip of an arm 7 disposed on the side of the stand 9 so as to push up the free bear base 2, and the free bear 1 can freely move up and down on the upper surface of the shooter table 5 through the hole 4. The work lifting mechanism A is configured as follows.

At the tip of the shooter table 5, a pivot 11 is provided rotatably connected to the cylinder / piston 10. At one base of the shooter table 5, when the shooter table 5 is rotated and inclined. A support shaft 8 (hinge) serving as a fulcrum is provided at the upper end of the stand 9.

Reference numeral 12 denotes a support shaft provided at the base of the cylinder / piston 10, which supports the cylinder / piston 10 at the base of the stand 9.

The operation will be described based on the above configuration.

The workpiece W, which has been processed in the preceding step, is placed on the shooter table 5 by a clamp device (not shown) in a state where the free bear 1 is immersed on the lower surface of the shooter table 5 and does not protrude from the upper surface. Then, the contraction of the cylinder piston 10 causes the cylinder
Since the tip of the piston 10 and the tip of the shooter table 5 are connected by the support shaft 11, the tip of the support shaft 8 (hinge) provided at the other end of the shooter table 5 starts rotating and tilting downward. The inclination angle reaches a predetermined angle, and the roller 6 provided at the tip of the arm 7 fixed to the side of the stand 9 abuts on the roller 6, and the base of the cylinder 6 is supported by the base of the stand 9. If the rotation and inclination continue downward due to the contraction action, the roller 6
The free bear base 2 opposes the force of the spring 3 and compresses the spring, and is pushed up in the counterclockwise direction opposite to the shooter table 5 that rotates and tilts clockwise, and is mounted on the free bear base 2. The free bear 1 protrudes its head from the hole 4 formed in the shooter table 5 to lift the work W from the surface of the shooter table 5 and is placed on the free bear 1 in a point contact manner. With the help of the rotation of the free bear 1, which freely rotates, the free bear 1 can be safely dropped and discharged without being caught.

When the work W has been dropped and discharged, the cylinder / piston 10 starts to extend, and each element starts to operate in a direction opposite to that described above, and the roller 6 and the free bear which are in contact with the lower surface of the free bear base 2 The base 2 is separated, the shooter table 5 continues to rotate counterclockwise around the support shaft 8 (hinge), the spring 3 starts to return to its original position, and the free bear 1 is moved to the shooter table 5.
Begin to sink its head from hole 4 of the shooter table 5
Returns to the horizontal state, and all the elements return to the original state.

When the free bear is pushed up and protrudes to the upper surface of the shooter table, a shock absorber or the like is used together to prevent the free bear from hitting the work vigorously.
The force for pushing up the work may be adjusted.

Further, the push-up mechanism has a simple structure, a notch hole is formed in the shooter table without using a free bear, a spring, an arm with a roller, and the like, and a push-up bar is provided at a predetermined angle on the side of the stand. When the shooter table is tilted downward, the push-up bar penetrates a notch hole drilled in the shooter table, and pushes up the upper end of the tilted work from below. Is also good.

In addition, a plunger (locking portion) is provided on the reposition table adjacent to the shooter table so as to be locked when the shooter table is closed. A safety device may be provided so that the shooter table does not tilt and open even if the air is not supplied and the cylinder loses its power.

[0021]

According to the present invention, there is provided an effect that a free bear is provided on a shooter table of a work shooter so that the work can be retracted, and when the work is taken out after punch press processing, the work can be dropped and discharged on the free bear without resistance.

[Brief description of the drawings]

FIG. 1 (a) is a vertical sectional side view showing a configuration of a main part of a device for preventing a work fall of a work shooter according to the present invention, and FIG.

2A is a plan view showing a situation around a work shooter of a conventional example, and FIG. 2B is an enlarged vertical sectional side view taken along the line AA of the conventional example.

[Explanation of symbols]

 Reference Signs List 1 free bear 2 free bear base 3 spring (spiral spring) 4 hole 5 shooter table 6 roller 7 arm 8 support shaft (hinge) 9 stand 10 cylinder / piston 11 support shaft 12 support shaft A work lifting mechanism W work

Claims (2)

[Claims] In a work shooter of a plate material processing machine such as a turret punch press, a work lifting mechanism having a free bearer which can freely move in and out of a shooter table is provided, and when the work is taken out after processing by the work lifting mechanism, the work is moved to the shooter table. An apparatus for preventing a workpiece from being dropped by a work shooter, wherein the workpiece is dropped and discharged so as to float from the surface of the workpiece, thereby preventing a workpiece from being dropped. 2. The work lifting mechanism according to claim 1, wherein a free bear base on which a free bear is mounted is suspended via a spring on a lower surface of a shooter table inclined downward by the action of a cylinder / piston with a hinge located on a processing machine side as a fulcrum. The shooter table is provided with a hole large enough to allow the free bear to look into its head. When the shooter table is inclined downward and reaches a predetermined angle, the free bear base is moved from below by the spring. An arm with a roller was placed on the side of the stand for the shooter table to push up the spring in the direction of compressing the spring against the force of the work, and the work floated on the free bear whose head protruded from the surface of the shooter table And the workpiece is safely dropped and discharged to a predetermined position. The work faller device according to claim 1, wherein: