JP2536786Y2 - Press-type side pin retaining device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing a side pin from engaging with a pad provided on an upper die body in a press die.

[0002]

2. Description of the Related Art As shown in FIG. 3, a pad 2 is provided on an upper die body 1 of a press die, and a side pin 3 is inserted into the upper die body 1 to lock the pad. The pad 2 is engaged with the concave groove 2a.

As a mechanism for preventing the side pin 3 from coming off, as shown in FIGS. 3 and 4, an annular groove 3a is provided at the head of the side pin 3, and a plate 5 engaged with the annular groove 3a is bolted to a bolt 6 This is a structure attached to the upper mold body 1 by

[0004]

In the above-mentioned conventional retaining mechanism, the bolt 6 must be completely removed from the upper die body 1 and the plate 5 must be removed when the side pin 3 is inserted and removed, and the work is extremely troublesome. In this case, quick removal and insertion of the side pins 3 cannot be obtained, and the removed plate 5 and bolts 6 may be lost. There is a problem that the engagement is released from the annular groove 3a.

It is an object of the present invention to provide a retaining device which solves the above-mentioned conventional problems.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide an annular ring provided on the head of the side pin and pivotally connected to a bolt fixed to the upper die body so as to be openable and closable. A pair of left and right gripping claws that engage with the groove, a spring that constantly urges the gripping claws in the closing direction, and a resilient stopper link that maintains the closed state of the gripping claws at the knob of the gripping claws. It is characterized by having.

[0007]

With the above arrangement, the side pins can be prevented from coming off and pulled out by opening and closing the gripping claws always attached to the upper die body.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes an apparatus main body of the present invention. As shown in FIG. 2, the device body 10 includes a pair of left and right gripping claws 11 that engage with an annular groove 3 a provided in the head of the side pin 3 fitted into the upper die body 1 of the press mold. The grip 11a of the gripping claw 11 includes a spring 13 that constantly biases the gripping claw 11 in the closing direction, and a resilient stopper link 14 that maintains the gripping claw 11 in the closed state.

The apparatus main body 10 having the above-described structure is attached to the upper main body 1 in the vicinity of the side pin 3 fitted with the opening / closing pivot point by the bolt 12, and is opened / closed with the bolt 12 as a fulcrum.

Since the present invention has the structure as described above, the pair of left and right gripping claws 11 are normally urged in the closing direction by the spring 13 as shown by 1A in FIG. The side pin 3 is prevented from coming off in the axial direction by engaging with the annular groove 3a provided on the side surface. At this time, the stopper link 14 extends in a straight line, and
1 is prevented from opening.

When the side pin 3 is to be inserted and removed, the grip 11a of the gripping claw 11 is pinched with a fingertip and pressed in a direction in which the gripping claws 11 approach each other, as shown in FIG. 11 opens with the bolt 12 as a fulcrum, and at the same time the stopper link 14 bends beyond the dead point. As a result, the gripping claw 11 is disengaged from the annular groove 3a in the head of the side pin 3, and the side pin 3 can be freely inserted and removed.

When the gripping portion 11a is released in the open state of the gripping claws 11, the pair of left and right gripping claws 11 is automatically closed by the spring 13 and engages with the annular groove 3a in the head of the side pin 3. Thus, the side pin 3 is prevented from coming off.

[0013]

As described above, the side pin retaining device according to the present invention engages with the annular groove provided on the head of the side pin, which is pivotally mounted on the head of the side pin with the bolt fixed to the upper die body as a fulcrum. A pair of left and right gripping claws, a spring that constantly biases the gripping claws in the closing direction, and a gripping portion of the gripping claws,
Since the stopper device is provided with the resilient stopper link for maintaining the closed state of the gripping claws, the retaining device main body is always integral with the upper die main body and is not lost when the side pin is inserted or removed.

Further, the release of the side pin from being stopped can be performed by one-touch operation of pinching the gripping portion of the gripping claw, and the time for attaching and detaching the side pin is reduced.

Further, the stopper link for holding the closed state of the gripping claws prevents the gripping claws from opening due to vibration or the like, thereby ensuring the safety of preventing the side pins from dropping off naturally.

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a sectional view of the present invention.

FIG. 3 is a sectional view of a conventional apparatus.

FIG. 4 is a front view of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper die main body 2 Pat 3 Side pin 3a Annular groove 10 Device main body 11 Gripping claw 11a Knob part 12 Bolt 13 Spring 14 Stopper link

Claims (1)

(57) [Scope of request for utility model registration] An apparatus for retaining a side pin, which is inserted into an upper die body of a press die and engages with a pad, wherein the side pin is pivotally mounted on a bolt fixed to the upper die body as a fulcrum so as to be openable and closable. A pair of left and right gripping claws that engage with the annular groove provided in the head of the pin, a spring that constantly biases the gripping claws in the closing direction, and a gripping portion of the gripping claws maintain the closed state of the gripping claws. A press-type side pin retaining device comprising: a resilient stopper link.