JP2756956B2 - Lifter for mold release device for processed products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of separating a processed product which is used, for example, when a metal plate material is subjected to face tapping by a press and a mold is released by raising a flange at an end of the processed product. The present invention relates to a lift for a mold device.

[0002]

2. Description of the Related Art Conventionally, as a device for releasing a processed product when a metal plate material is press-formed, for example, Japanese Unexamined Patent Publication No.
No. 478 is known.

[0003] The press-release product release apparatus described in the above-mentioned patent publication includes a guide mechanism urged upward by a spring material on a side surface of a lower mold, and a vertical movement guided by the guide mechanism. It has a lift mechanism that can be urged upward by the sprink material, and when the upper die is lowered to press-form the plate material to be processed, the lift mechanism is also lowered with the lowering of the guide mechanism. When the upper die is lifted after completion, the guide mechanism and the lift mechanism are raised by the urging force of the spring material, and the lift mechanism lifts the flange of the workpiece to release the die.

[0004]

However, in the above-described conventional release device, the contact portion of the lift mechanism which comes into contact with the flange portion of the press-formed product from below and moves up only vertically. Therefore, when the side surface of the lower mold is inclined in the direction in which the width increases from above to below, and the flange portion of the pressed product is in close contact with the inclined surface, the contact portion of the lift mechanism is at the lower end of the flange portion. Can not be released, so it may not be possible to release the mold. Moreover, even if the contact portion of the lift mechanism can receive the flange portion of the processed product from below, the processed product has a lower mold even though the contact portion is going to rise only in the vertical direction. Since the lift mechanism is inclined to rise along the side surface shape, the contact part is disengaged from the lower end of the flange part at the moment when the lift mechanism rises, so that the swing mechanism frequently occurs. Therefore,
In the above-mentioned conventional release apparatus, the release of the pressed product is extremely inefficient, and the flange portion may be damaged or bent, so that the design of the lower die or the pressed product may be limited. For this reason, there is a demand for a press-release product release apparatus that can press-mold any shape and that can reliably release the press-processed product by raising the flange portion.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned drawbacks and to provide a lifter which moves up and down by being guided by a guide mechanism. A contact member is provided on the portion so as to be tiltable in the front-rear direction, and the contact member is urged by an urging mechanism so that the contact portion at the upper end always tilts forward, and a contact member by the urging mechanism Is restricted by a stopper mechanism.

According to the present invention, the biasing mechanism is a spring material interposed between the lifter and the contact member, and the stopper mechanism is a screw mechanism provided on the contact member. Thus, the tilt range of the contact member is made variable.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The apparatus for releasing a processed product according to the present invention includes a lifter 1 that moves up and down while being guided by a guide mechanism (not shown).

The lifter 1 is in the form of a thick plate, and has a long groove 2 at the center thereof for mounting on a guide mechanism. The front and rear positions of the lifter 1 can be freely adjusted by the long groove 2 to be attached to the lift mechanism. Can be.

At the tip of the lifter 1, a U-shaped shaft support frame 3 is provided which is open at the top and bottom surfaces and the front surface.
An abutting member 4 of a processed product is provided inside the shaft support frame 3 so as to be tiltable in the front-back direction by a shaft 5.

The contact member 4 has a thick vertical plate shape, and has a horizontal shaft insertion tube portion 6 below the back surface, and the shaft 5 is inserted through the shaft insertion tube portion 6. Therefore, the contact member 4
Can be tilted in the front-rear direction with the shaft 5 as a fulcrum.

A contact portion 7 is provided at the upper end of the contact member 4 so as to extend forward, and a shallow lateral receiving groove 8 is formed on the upper surface of the contact portion 7. Also,
A stopper mechanism is provided below the abutting member 4 as a male screw rod 9 that is screwed from the front surface to the rear surface and penetrates the rear end portion 10 of the male screw rod 9 to the lower inner surface of the shaft support frame 3. Contact. Therefore, when the male screw rod 9 is rotated and moved in the front-rear direction below the front surface of the contact member 4, the rear end portion 10 remains in contact with the lower inner surface of the shaft support frame 3. Can be adjusted.

A support member 11 is provided above the shaft support frame 3 as a male screw rod which is screwed from the rear surface to the front surface and penetrates the support member 3. An urging mechanism 12, which is a coil spring material located inside, is attached, and the tip of the urging mechanism 12 is brought into contact with the upper back surface of the contact member 4, so that the upper part of the contact member 4 tilts forward. Energize.

Accordingly, the contact member 4 is urged by the urging mechanism 12 so that the upper part is tilted forward, and the urging force is received by the male screw rod 9.
When the male screw rod 9 is rotated and moved in the front-back direction, the inclination angle of the contact member 4 can be changed.

The lifter 1 of the present invention has the above-described structure, and when the workpiece b is released from the mold a, as shown in FIG. The lifter 1 is brought close to the side surface of the mold a so that the front surface of the contact portion 7 is pressed against the side surface of the mold a so that the upper surface of the contact portion 7 is almost upright. The flange portion c of b is received and engaged with the receiving groove 8.

In this state, when the lifter 1 is lifted by a lift mechanism (not shown), the contact portion 7 follows the side surface inclination of the mold frame a by the urging force of the urging mechanism 12 and comes into contact. The member 4 rises while tilting. Therefore,
By the raising of the contact member 4, the contact portion 7 can surely raise the flange portion c of the processed product b. Since it falls forward by the bias, it supports the flange portion c.

When adjusting the tilting range of the contact member 4 based on the inclination of the flange portion c or for other reasons, the male screw rod 9 is rotated and moved to move the contact member 4. What is necessary is just to set an inclination state.

The embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and may be implemented in any manner unless the configuration described in the claims is changed. be able to. For example, the urging mechanism and the stopper mechanism may have any configuration.

[0018]

In summary, according to the present invention, an abutting member is provided at a tip end portion so as to be tiltable in the front-rear direction, and the abutting member is
The present invention is characterized in that the biasing mechanism biases the contact portion at the upper end to always tilt forward, and that the range of tilt of the contact member by the biasing mechanism is regulated by a stopper mechanism.

Therefore, by merely bringing the lifter close to the mold, it is possible not only to raise the processed product without fail, but even if the side surface of the mold is inclined or has a loose arc shape, Since the contact member is tilted by the ascent, the flange portion does not come off from the contact portion. For this reason, not only no swing occurs, but also the processed product is not deformed, and the yield is remarkably improved.

According to the present invention, the biasing mechanism is a spring member interposed between the lifter and the contact member, and the stopper mechanism is a screw mechanism provided on the contact member. Thus, the tilting range of the contact member is made variable.

Therefore, the tilting range of the contact member can be changed by a simple operation, so that an optimum tilting state can be brought in accordance with the shape of the side surface of the mold, and the workpiece can be reliably swung when the mold is released. Can be prevented. Further, since the contact member can be reliably tilted with simple components, the practical value is high.

[Brief description of the drawings]

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

FIG. 2 is a side view of the same.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1;

FIG. 4 is a schematic view when a processed product is released from a mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lifter 2 Long groove 3 Shaft support frame 4 Contact member 5 Shaft 6 Shaft insertion cylinder part 7 Contact part 8 Receiving groove 9 Male screw rod 10 Rear end part 11 Support member 12 Biasing mechanism

Claims (2)

(57) [Claims] 1. A contact member is provided at a front end portion of the contact member so as to be tiltable in the front-rear direction, and the contact member is urged by an urging mechanism so that the contact portion at the upper end is always inclined forward.
A lifter for a workpiece release device, wherein a tilting range of a contact member by the urging mechanism is regulated by a stopper mechanism. 2. The urging mechanism is a spring material interposed between the lifter and the contact member, and the stopper mechanism is a screw mechanism provided on the contact member, and the contact member is tilted by adjusting the screw mechanism. The lifter according to claim 1, wherein the range is variable.