KR20150077734A - Moving bolster fixing apparatus and press machine having the same - Google Patents

Abstract

The present invention relates to a moving bolster fixing apparatus and a press machine having the same, and specifically, the moving bolster fixing apparatus comprises: a holding part formed to be protruded on an upper part of the front of a moving bolster; a locking part formed to lock the holding part on a bed upper part of the press machine on which the moving bolster is rightly positioned; a locking release part formed to release the lock of the holding part at the locking part; a sensing part formed to sense the locking and the releasing of the holding part at the locking part; a controller connected to the sensed part to control the locking part and the locking release part. Therefore, simultaneously with the moving bolster on the upper part of a bed correctly positioned for an exchange of a metal mold, the correctly positioned moving bolster can be rendered immobile, from which the time spent exchanging the metal mold can be shortened as compared to conventional art.

Description

[0001] MOVING BOLSTER FIXING APPARATUS AND PRESS MACHINE HAVING THE SAME [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a moving bolster fixing device and a press machine having the same, and more particularly, to a moving bolster fixing device installed to stop and fix a moving bolster in a fixed position during a mold exchange and a press machine having the same.

Generally, a press machine is a machine which performs a plastic working such as bending, bending, shearing and the like of a material mainly by using a mold. The kind is classified into a mechanical press and a hydraulic press according to a structure generating a compressive force. Small and medium sized presses.

In the case of a large press machine, since the mold itself is heavy, it takes a long time to perform the mold changing operation. Therefore, moving bolsters are frequently used to shorten the time for changing the mold and increase convenience. The mold is loaded on the upper part and moved to the upper part of the bed of the press machine through a rail connected to the inside and the outside of the press.

Therefore, the press machine having the moving bolster is provided with a device for stopping the moving bolster at the correct position when the mold is exchanged. Such a conventional technique is known from Korean Utility Model Publication No. 20-1998-053077.

1, a stopper block 12 is coupled to one side of a top surface of the bed 10, a stopper 22 corresponding to the stopper block 12 is mounted on a side surface of the moving bolster 20, The stopper 22 of the moving bolster 20 strikes the stopper block 12 of the bed 10 so that the moving bolster 20 is positioned and stopped at the upper portion of the bed 10.

However, in the related art, it was desired that the moving bolster stood at the top of the bed by stopping the stopper and the stopper block. However, since the stopper and the stopper block generate repulsive force on the stopper, There is a problem that one moving bolster is bounced back by the repulsive force and deviates from the correct position.

Therefore, when the moving bolster is moved out of the correct position, it needs to be corrected, which is time consuming and time-consuming due to the correction work, which causes a problem in the pressing process.

Korean Utility Model Publication No. 20-1998-053077 (1998, 10, 07)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a moving bolster fixing device for stopping a moving bolster in a fixed position, And to provide a press machine equipped with the same.

In order to accomplish the above object, the present invention provides a moving bolster fixing device installed to stop and fix a moving bolster at a predetermined position in a press machine, the moving bolster fixing device comprising: a locking part formed to protrude from a front lower part of the moving bolster; A locking part formed on an upper part of the bed of the press machine in which the moving bolster is positioned to lock the locking part; An unlocking portion formed on the locking portion to unlock the locking portion; A sensing unit formed on the locking unit to sense locking and unlocking of the locking unit; A control unit connected to the sensing unit to control the unlocking unit; And a control unit.

In the present invention, the latching portion may include a body fixed to the moving bolster; A latch which is inserted into the side surface of the body so as to be capable of being inserted and removed and whose front end is inclined; And a spring accommodated inside the body to push the rear end of the latch to apply an elastic force to the latch; And FIG.

In the present invention, the locking portion is fixed to a bed of the press and has a recessed recessed portion for inserting the body and the latch on an upper rear surface thereof; And a blocking piece protruding from the receiving portion of the main body so as to catch the latch inserted into the receiving portion.

In the present invention, the unlocking portion may include: a cylinder fixed to a side surface of the lock portion; And a piston rod which is formed at an end of the cylinder so as to be inserted into the accommodating portion and pushes the latch to pass through the blocking piece when the locking portion is unlocked; And FIG.

In the present invention, the sensing unit may be a limit switch inserted into the accommodating portion and having a button which comes into contact with the engaging portion in front of the limit switch.

In the present invention, any one of the moving bolt fastening devices described above is installed in the press machine.

As described above, according to the present invention, the moving bolster can be stopped at the upper position of the bed at the time of changing the mold and the movable moving bolster can be fixed so as not to move, There is an effect that can be done.

1 is a view showing a moving bolster stop device according to the prior art.
2 is a view showing an installation state of the moving bolt fixing device according to the present invention.
3 and 4 are partial plan views showing an operating state of the moving bolt fixing device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a moving bolt fixing device and a press machine having the same according to the present invention will be described in more detail with reference to the accompanying drawings.

Hereinafter, the same reference numerals will be used to denote the same or similar elements in all of the following drawings, and repetitive descriptions will be omitted. The following terms are defined in consideration of the functions of the present invention. It should be interpreted as meaning.

FIG. 2 is a view showing an installation state of the moving bolster fixing device according to the present invention, and FIGS. 3 and 4 are partial plan views showing an operating state of the moving bolster fixing device according to the present invention.

As shown in the drawings, the present invention is a moving bolster fastening apparatus 100 installed to stop and fix a moving bolster in a right position in a press machine, the structure of which is a locking part 110, a locking part 120, An unlocking unit 130, a sensing unit 140, and a control unit 150. [

First, the engaging portion 110 is formed to protrude from the front lower portion of the moving bolster 20.

The latching part 110 includes a body 111 to which the moving bolster 20 is fixed at the rear side, a latch 112 which is inserted into the side of the body so as to be slidable at a front end thereof, And a spring 113 which is received inward of the latch 112 to push the rear end of the latch 112 and applies an elastic force to the latch 112.

The locking part 120 is formed on the upper part of the bed 10 of the press machine in which the moving bolster 20 is positioned so as to lock the locking part 110.

The locking part 120 is fixed to the bed 10 of the press and includes a main body 121 having a receiving part 121a recessed to insert the body 111 and the latch 112 on the upper rear surface, And a blocking piece 122 protruding from the receiving portion 121a of the main body 121 so as to catch the latch 112 inserted in the receiving portion 121a.

In addition, the lock portion 120 is formed with an unlocking portion 130 to unlock the locking portion 110.

The unlocking part 130 includes a cylinder 131 fixed to a side surface of the locking part 120 and a locking part 120 formed to be inserted into the receiving part 121a at an end of the cylinder 131, And a piston rod 132 which pushes the latch 112 to pass through the stopper piece 122 when unlocking the stopper piece 122.

The sensing unit 140 is formed on the locking unit 120 to detect the locking and unlocking of the locking unit 110.

The sensing unit 140 includes a limit switch inserted into the accommodating portion 121a and having a button 141 for contacting the front of the engaging portion 110 in front.

The control unit 150 is connected to the sensing unit 140 to control the unlocking unit 130.

The press machine is provided with a moving bolster fixing device 100 including a locking part 110, a locking part 120, an unlocking part 130, a sensing part 140 and a control part 150.

The operation state of the present invention having the above-described structure will now be described.

The moving bolt 20 on which the mold A is placed moves to the upper part of the bed 10 as shown in Figures 2 and 3 so that the locking part 110 of the moving bolster 20 is moved to the locking part of the bed 10, The engaging portion 110 is locked and locked to the lock portion 120. Thus, the moving bolster 20 can not move any more and stops.

That is, the position of the lock part 120 is calculated in advance so that the moving bolster 20 can be positively positioned and is installed on the upper part of the bed 10, so that the moving bolster 20 stops at the moving bolster 20, .

When the latching part 110 is inserted into the receiving part 121a of the locking part 120, the latch 112 of the latching part 110 is locked in the locking part 120, The front end of the clasp 112 that abuts the blocking piece 122 is formed to be inclined so that the clasp 112 is pressed against the blocking piece 122 and slides, The body 111 and the latch 112 of the latching part 110 pass through the blocking piece 122 and then are inserted into the receiving part 121a of the locking part 120, . At this time, the spring 113 is compressed by the latch 112 in the body 111 of the latch 110.

As the spring 113 is resiliently restored by the elasticity of the latch 112 inserted into the receiving portion 121a, the front end of the latch 112 is caught by the blocking piece 122 while protruding outside the body 111 .

At this time, as the button 141 is pushed forward in the front of the locking part 110 inserted into the receiving part 121a, the sensing part 140 is locked by the locking part 110 and the locking part 120 to the control unit 150.

Therefore, the moving bolster 20 is fixed by the locking of the locking part 110 and the locking part 120, and can not move any more, and is positioned right above the bed 10.

2 and 4, when the moving bolt 20 is unlocked in order to exchange another mold A, the operator operates the unlocking part 130 through the control part 150, (110) to be unlocked at the lock portion (120).

That is, when the piston rod 132 is pushed inside the cylinder 131 of the unlocking part 130 to the inside of the accommodating part 121a and the latch 112 protruded into the accommodating part 121a is pushed, The body 111 and the latch 112 of the latching part 110 pass through the stopping piece 112 and then the lock 111 is pushed by the piston rod 132. As a result, (120). ≪ / RTI >

At this time, the detection unit 140 detects that the locking unit 110 and the locking unit 120 are unlocked as the button 141 is released from being pressed by the locking unit 110 in the forward direction, (150).

Accordingly, the moving bolster 20 can move in the bed 10 as the locking of the locking part 110 and the locking part 120 is released.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

10: Bed 20: Moving Bolster
100: Moving bolster fixing device 110:
111: body 112: latch
113: spring 120:
121: main body 121a:
122: stopping piece 130: unlocking part
131: cylinder 132: piston rod
140: sensing unit 141: button
150: Control part A: mold

Claims (6)

A moving bolster fastening device installed to stop and fix a moving bolster in a correct position in a press machine,
A locking part formed to protrude from a front lower portion of the moving bolster;
A locking part formed on an upper part of the bed of the press machine in which the moving bolster is positioned to lock the locking part;
An unlocking portion formed on the locking portion to unlock the locking portion;
A sensing unit formed on the locking unit to sense locking and unlocking of the locking unit;
A control unit connected to the sensing unit to control the unlocking unit; Wherein the moving bolster fixing device comprises:
The method according to claim 1,
[0027]
A body fixed to the moving bolster;
A latch which is inserted into the side surface of the body so as to be capable of being inserted and removed and whose front end is inclined; And
A spring accommodated inside the body to push the rear end of the latch and to apply an elastic force to the latch; Wherein the moving bolster fixing device comprises:
The method of claim 2,
The locking portion
A body fixed to a bed of the press and having a recessed recess for inserting the body and the latch on an upper rear surface thereof; And
And a blocking piece protruding from the receiving portion of the main body so as to catch the latch inserted into the receiving portion.
The method of claim 3,
The lock-
A cylinder fixed to a side surface of the lock portion; And
A piston rod which is formed at an end of the cylinder so as to be inserted into the accommodating portion and pushes the latch to pass through the stopper piece when the latch portion is unlocked; Wherein the moving bolster fixing device comprises:
The method according to claim 1,
Wherein the sensing unit is a limit switch inserted into the accommodating portion and having a button that comes into contact with the engaging portion at a front side thereof.
A press machine comprising the moving bolt fixing device according to any one of claims 1 to 5.

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