JPS6344171Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a holder that supports dice.

Conventionally, for example, holders for dies for drawing out wire rods and finishing the outer surface of the wire have a recess for inserting the dies, and the dies are fixed by shrink-fitting, or holders are fixed by press-fitting. thing,
Some screw holes are drilled outside the recess and the die is fixed by tightening bolts.

However, a holder in which a die is integrally fixed by shrink fitting or press-fitting has the disadvantage that if the die becomes worn and damaged, it must be discarded together with the die, which is uneconomical. Further, in a holder in which the die is fastened with bolts, the threaded portion tends to loosen due to vibration during use, and it takes time to secure the die.

The purpose of this invention is to eliminate the above-mentioned drawbacks.

That is, in this invention, the side surface of the die is pressed and tightened by the camshaft portion of the rotating shaft member,
This is a die holder that can maintain a strong and stable fixed state and also allows the dice to be easily attached and detached.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings. As shown in Figs. 1 and 2, the die holder of this invention is provided with a circular recess 1 in the center of the upper surface into which a round die A is inserted, and a lower part of this recess 1 in the vertical direction for passing the workpiece. A cylindrical holder body 4 in which through-holes 2 are continuously provided, a shaft hole 3 having a center outside the recess 1 and partially connected to the recess 1 is bored, and the shaft hole 3 of this holder body 4 is It consists of a shaft member 5 for fixing the die that is rotatably fitted into it, and a disk-shaped protection plate 6 that is fitted on the top surface of the holder body 4. The holder body 4 has a horizontal threaded hole 7 that communicates with the shaft hole 3. The shaft member 5 includes a round head 9 having a hexagonal hole 8 for a tool, an eccentric circular cam shaft 10, and a thin round bar-shaped leg 12 having a groove 11 (see FIG. 3) around the periphery.
A ring 13 whose protruding surface goes in and out of the recess of the holder body 4 is fitted into the camshaft 10, and as shown in FIG. The side surface of A is pressed by the protruding surface of the ring 13 fitted to the camshaft 10 by turning the shaft member 5 with a necessary tool, and the groove 11 of the leg part 12 is pressed with the threaded rod 14 screwed into the horizontal screw hole 7. It is designed to be pressed to prevent it from coming off.

The recess 1 of the holder body 1 is formed to be shallower than the height of the die A by the thickness of the protection plate 6. Therefore, the upper surface of the die A and the upper surface of the protection plate 6 become the same surface.

As shown in FIG. 3, the axis of the shaft hole 3 of the holder body 4 is parallel to the axis of the recess 1, and the head round hole 15 is inserted from above in correspondence with the shaft member 5. It consists of a camshaft hole 16 with a slightly larger diameter than the round hole 15 and a small hole 17 for the leg, and the round hole 15 and the camshaft hole 1 are in the recess 1.
A part of the outer surface is connected to 6. Further, the horizontal screw hole 7 of the holder body 4 is provided on an extension line L (see FIG. 4) of a straight line that faces the center of the small hole 17 and connects the center of the holder body 4 and the center of the shaft hole 3.

As described above, the shaft member 5 has a camshaft portion 10.
When the ring 13 is fitted to the ring 13, the rotation for pressing the die A becomes relatively smooth, but the camshaft 10 can also be an eccentric circular camshaft that is integrated with the ring 13 and is larger than the head 9. .

The protective plate 6 is a disk-shaped tray having a through hole 18 in the center into which the die A is fitted, and when pushed into the top surface of the holder body 4, the holder body 4 is locked.

In the die holder of the present invention, in addition to providing a single shaft hole 3 around the recess 1 as described above, it is also possible to provide a plurality of shaft holes, for example, in symmetrical positions.

The die holder according to this invention has the structure as described above, and when using it, the die A is fitted into the recess 1 as shown in FIG.
A tool having a hexagonal part is fitted into the hexagonal hole 8 of the head 9 of the shaft member 5, and as shown in FIGS. 3 and 4,
When the eccentric protrusion of the ring 13 of the camshaft 10 presses the side surface of the die A using the leg 12 as a fulcrum and the threaded rod 14 is strongly tightened, the threaded rod 14 is inserted into the groove 11 of the shaft member 5. Since the tip of the shaft member 5 is inserted and pressed, the shaft member 5 is pressed in the direction of the die A, becomes unrotatable, and is fixed to prevent it from coming off. Moreover, when the protection plate 6 is fitted, the shaft hole 3 and the shaft member 5 are protected from chips of the die A and the like.

In addition, when removing die A, use threaded rod 1.
4, and turn the shaft member 5 with a tool to remove the cam shaft part 10.
It is better to disengage the die A from the die A.

As mentioned above, according to the die holder of this invention, the die can be attached and detached easily and quickly, leading to improved work efficiency, and since the sheath is fixed by a cam, its fixation is strong and can be maintained for a long time. In addition, it has excellent durability and can be used for a long time, so it is economical.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the invention, Fig. 2 is a vertical sectional side view showing the same assembled state;
3 is an enlarged view of the main part of FIG. 2, and FIG. 4 is a cross-sectional plan view taken along the line shown in FIG. 3. 1... recess, 2... through hole, 3... shaft hole, 4...
Holder body, 5... Shaft member, 6... Protective plate, 7...
...Horizontal screw hole, 10...Cam shaft part, 11...Groove, 1
2... Leg, 13... Ring, 14... Threaded rod,
A... Dice.

Claims (1)

[Scope of utility model registration request] A die-fitting recess is provided on the upper surface, and a through-hole for passing the workpiece is provided in the lower part of the recess, and one or more shaft holes are centered outside the recess and are partially connected to the recess. The holder body is comprised of a holder body with a hole in the holder body, and a die fixing shaft member rotatably fitted into the shaft hole of the holder body. consists of a head having a square hole for a tool, a camshaft whose protruding surface enters and exits a recess in the holder body, and a leg having a groove, and a die fitted into the recess in the holder body. A die holder in which a shaft member is rotated and pressed by a protruding surface of a cam shaft part, and a threaded rod screwed into a horizontal screw hole is pressed against a groove in a leg part to prevent it from coming off.