JPH0415380Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention has an upper arm and a lower arm that face each other vertically, and a punch can be rotatably attached to the tip of the upper arm, and The present invention relates to a mold holder that rotatably supports a die, and more particularly, to a mold holder that allows easy die replacement.

(Prior art) In a mold holder in which a punch is rotatably supported at the tip of the upper arm and a die is rotatably supported at the tip of the lower arm, the punch is attached to the tip of the upper arm so that it can move up and down. The die is detachably supported on a cylindrical punch guide provided at the lower arm, and the die is detachably supported on a die holder provided at the tip of the lower arm.

(Problems to be Solved by the Invention) The punch guide allows the punch to be fixed by tightening, but by releasing the tightening, the punch can be easily attached to and removed from the punch guide.
However, the die holder consists of an inner ring that is rotatably fitted into an outer ring attached to the tip of the lower arm, and the die is fixed within the inner ring with a set screw. be. Therefore, in order to attach and detach the die to and from the inner ring, it is necessary to loosen and tighten the setscrew, which is quite troublesome.

(Means for solving the problem) In view of the above-mentioned conventional problems, this invention rotatably supports a punch at the tip of the upper arm,
The die corresponding to the punch is rotatably supported at the tip of the lower arm provided below the upper arm, and the inner ring is rotatable inside the outer ring attached to the tip of the lower arm. and an inner ring is provided to be freely tightened and fixed by the outer ring, and a key groove is formed on the outer circumferential surface of the die and is protruding inward from the inner ring and is freely engageable and detachable from a key provided on the inner ring.
The die 17 is attached to and detached from the inner ring, and in order to prevent the die from slipping out of the inner ring and fix it, a rubber elastic member whose tip end slightly protrudes inward from the inner circumferential surface of the inner ring is used. A member is provided on the inner ring at a position spaced apart in the circumferential direction from the position of the key.

(Function) With the above configuration, the die is mounted with the keyway aligned with the key provided on the inner ring, so that the relationship between the inner ring and the die can be maintained in a constant direction. When the die is attached to the inner ring, the die is regulated and fixed so that it does not slip out of the inner ring due to the accumulated force of the rubber elastic member provided in the inner ring, and the die is fixed so that it does not slip out of the inner ring. This prevents the die from slipping out of the inner ring due to vibration or the like. The die can be removed from the inner ring by lifting the die against the restriction due to the stored force of the elastic member, and the die can be easily attached and detached.

(Example) Hereinafter, one example of the present invention will be described in detail using the drawings.

Figure 1 shows a mold holder 1 that is used in a punch press or the like to hold a pair of punches and dies in alignment without directly attaching them to a slide or bolster, allowing for rapid mold exchange. It is.

The mold holder 1 has an upper arm 7 disposed above the lower arm 3 with a gap part 5 in between, a punch 11 is mounted near the tip of the upper arm 7 via a punch guide 9, and an outer ring 13 is mounted on the lower arm 3. Die 17 through inner ring 15
is provided.

The front half of the outer ring 13 rests on the dive block 19 near the tip of the lower arm 3, and the rear half rests on the lower arm 3 via an auxiliary ring 21, and the keyway 23 is inserted into the keyway 23 from the lower arm 3. A protruding key 25 is engaged.

The die block 19 is fixed to the lower arm 3 with two bolts 27, 27 shown in FIG. When pushed down in the direction, the rightward tension of the two horizontal bolts 33, 33 is released and the bolts can be removed toward the tip side.

As is clear from FIG. 4, a portion of the outer ring 13 is provided with a radial cut groove 35, and a tightening bolt 37 is provided that straddles the cut groove 35.

As mentioned above, the rotation of the lower arm 3 and the outer ring 13 is restricted by the key 25, but when the tightening bolt 37 mentioned above is loosened, the inner ring 15 moves to the outer ring 1.
It is possible to rotate within 3.

The rotation of the die 17 and the inner ring 15 is restricted by a key 49 shown in FIG. 4, so that they are forced to rotate integrally.

At the tip of the die block 19 described above, an indexing plate 41 is provided extending approximately 90 degrees, for example.
The direction of the die 17 can be easily set by inserting pins 45 into pin holes 43 provided at 15-degree intervals and rotating the arms 47 fixed to the inner ring 15 to abut them.

For rotation to any angle that is not a multiple of 15 degrees, use pin 4.
An appropriate block gauge is used around the inner ring 15 to determine the position of the inner ring 15, and first of all, to determine the rotational position of the die 17.

The die 17 is attached to the inner ring 15 due to the necessity of changing the direction.
A key 49 is provided between the die 17 and the die 17, and a key groove 39 is also engaged with the die 17.

A radial bottomed hole 49' is provided at a position spaced apart from the key 49 in the circumferential direction of the ring 15, and a rod-shaped elastic member 51 (for example, a urethane rod) is inserted into the bottomed hole 49' as shown in FIG. The elastic member 51 is press-fitted into the inner ring 49, and the distal end portion of the elastic member 51 slightly protrudes inward from the inner circumferential surface of the inner ring 15.

The rod-shaped elastic member 51 is provided with a longitudinally parallel striped protrusion 53 on its outer periphery, and the end in contact with the die 17 is formed into a taper 55 having a small diameter.

In the above configuration, the inner ring 15 is rotated and fixed as appropriate with respect to the outer ring 13, and the die 17 supported by the inner ring 15 is fixed.
To replace the punch 11 and the die 17 when the punch 11 is rotated in response to the 11
Remove. After that, from the inner ring 15 to the die 17
At the same time as removing and installing a separate die 17,
A separate punch 11 is attached to the punch guide 9.

When the die 17 is attached to and removed from the inner ring 15, the die 17 is regulated and fixed so as not to slip out of the inner ring 15 by the accumulated force of the elastic member 51 provided in the inner ring 15. Therefore, the die 17 is removed against the regulating force due to the stored force of the elastic member 51, and the separate die 17 is removed from the key 4.
9 with the keyway 39, and the tip of the elastic member 51 is strongly fitted into the inner ring 15 to elastically deform it, and the die 17 can be easily attached and detached.

(Effects of the Invention) As can be understood from the above description of the embodiments, the present invention has a punch 11 rotatably supported at the tip of the upper arm 7, and a lower arm 3 provided below the upper arm 7. A die 17 corresponding to the punch 11 is provided at the tip of the
The mold holder is rotatably supported, and the inner ring 15 is rotatable in the outer ring 13 attached to the tip of the lower arm 3, and the inner ring 15 can be tightened and fixed by the outer ring 13. A key groove 39 is formed on the outer circumferential surface of the die 17 and is provided on the outer circumferential surface of the die 17 so as to protrude inwardly from the inner ring 15 and can be freely engaged with and detached from the key 49 provided on the inner ring 15. In order to prevent the die 17 from slipping out of the inner ring 15 and fix it, a rubber elastic member 51 is provided, the tip of which slightly protrudes inward from the inner circumferential surface of the inner ring 15. , is provided on the inner ring 15 at a position spaced apart in the circumferential direction from the position of the key 49.

Therefore, according to the present invention, the relationship between the inner ring and the die can be maintained in a fixed direction by fitting the die so that the key groove is aligned with the key provided in the inner ring. When the die is attached to the inner ring, the accumulated force of the rubber elastic member provided in the inner ring prevents the die from slipping out of the inner ring and fixes the die. This prevents the die from slipping out of the inner ring due to, etc. The die can be removed from the inner ring by lifting the die against the regulating force due to the stored force of the elastic member, and the die can be easily attached and detached.

[Brief explanation of drawings]

Fig. 1 is a side view of a mold holder implementing the present invention, Fig. 2 is a front view of the same as above, Fig. 3 is a side view and rear view of a rod-shaped elastic member, and Fig. 4 is a cross-sectional view taken along the - cross section in Fig. 1. FIG. 5 is a cross-sectional view taken along the - arrow in FIG. 4. Explanation of symbols representing main parts of the drawings: 1...mold holder, 13...outer ring, 15...inner ring,
17...Die, 49'...Bottomed hole, 51...Elastic member.

Claims (1)

[Scope of utility model registration request] A mold holder is formed by rotatably supporting a punch 11 at the tip of an upper arm 7 and rotatably supporting a die 17 corresponding to the punch 11 at the tip of a lower arm 3 provided below the upper arm 7. Then, an inner ring 15 is rotatably provided in an outer ring 13 attached to the tip of the lower arm 3, and the inner ring 15 is freely tightened and fixed by the outer ring 13, and protrudes inward from the inner ring 15. A key groove 39 is formed on the outer circumferential surface of the die 17 and is removably engaged with a key 49 provided on the inner ring 15, and the die 17 is provided removably with the inner ring 15. A rubber elastic member 51 whose distal end slightly protrudes inward from the inner circumferential surface of the inner ring 15 is placed at a position spaced apart in the circumferential direction from the position of the key 49 in order to prevent it from slipping out of the inner ring 15 and fix it. A mold holder characterized in that it is provided on an inner ring 15.