JPS5929767Y2 - Container equipment for extrusion press - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a container device for an extrusion press, and more specifically, a container is detachably attached to a container holder via a lock ring, and the extrusion press can be used by flipping the container back and forth. The present invention relates to a container device for use in containers.

Conventional indirect extrusion press container devices, for example,
It was configured as shown in the figure.

In FIG. 1, 1 is a container, and a through hole is formed in the center of the container 1 along the axial direction.
A cylindrical liner 2 is fitted and fixed inside.

A die stem 4 attached to a die slide device section 3a of a stationary plate is inserted into the liner 2, and a die 5 is attached to the tip of the die stem 4.

The container 1 is detachably attached to a container holder 6, and a shear 7 for cutting products is attached to the container holder 6.

A cylinder 8 is attached to the fixed platen 3, and the tip of a piston rod 9 of this cylinder 8 is connected to the container holder 6 side, and by operating the cylinder 8, the container 1 can be moved freely. .

10 is a stem; the stem 10 is inserted into the sleeve 2 on the inner surface of the container 1 together with a dummy block;
and container 1 are synchronized with die stem 4, which is in a fixed state.
The billet (not shown), which is the metal to be formed, loaded into the sleeve 2 is pressed with great pressure between the dummy block 11 and the die 5 fixed to the tip of the die stem 4. Extrusion molding is performed by extruding from.

However, the inner side of the sleeve 2 on the side into which the die stem 4 of the container 1 is inserted is a portion to which a large force is applied at the start of extrusion molding, and this portion is subject to wear and tear first.

On the other hand, since the opposite side of the sleeve 2 is hardly used, it is not damaged by wear.

Therefore, after performing molding work for a certain period of time, it is possible to adopt a method in which the container 1 is moved back and forth, reattached, the undamaged side is placed on the die stem 4 side, and molding is continued again.

In order to detachably attach the container 1 to the container holder 6, grooves 1a are formed along the entire circumference on the outer peripheral surface of the container 1 near both ends in the axial direction.
A lock ring 12 is removably fitted into the container holder 6 to prevent the container 1 from shifting in the axial direction.
As shown in the figure, this was prevented by fitting a key 13 between the two.

However, in the past, as shown in the left half a of FIG. 2 and FIGS. 3 and 5, the lock ring groove 1a is formed with the same depth over the entire circumference.
3 is formed across the key groove 1b into which the key groove 1b is fitted.

However, when trying to cut a product using the shear 7 based on such a structure, as is clear from FIG. As shown on the right side of Figure 3, the lock ring 12 is not present in the groove 1a where the lock ring 12 fits when it is on the opposite side.
3, the pressure receiving area also decreases, and in this part, that is,
Stress is concentrated at the keyway 1b, resulting in damage to the container 1.

The present invention was developed in order to eliminate the above-mentioned drawbacks of the conventional technology, and the shape of the groove in which the lock ring is attached is modified in the area where shearing force is applied to the product. It is an object of the present invention to provide a container device for an extrusion press configured to eliminate stress concentration and prevent damage to the container.

In order to achieve the above objective, the present invention has a structure in which the depth of the fitting groove of the lock ring that communicates between the container and the container holder is deep in the shearing direction of the product and O in the direction perpendicular to the shearing direction. It was adopted.

Hereinafter, the present invention will be explained in more detail based on embodiments shown in the drawings.

6 and 7 illustrate one embodiment of the present invention. In the present invention, the groove 1 into which the lock ring 12 fits
A structure is adopted in which the shape of c is perpendicular to the direction in which shearing force is applied, that is, the depth of the key 13 is O in the horizontal direction, and the depth is maximum in the vertical direction. .

If such a structure is adopted, as is clear from Fig. 6, the depth of the lock ring fitting groove 1c will not be deeper than the keyway 1b in the direction perpendicular to the direction in which shearing force is applied. , as shown in FIG. 3, the lock ring groove 1 is deeper than the bottom surface of the key groove 1b and has no example.
Compared to the case where the keyway 1b is provided, the pressure-receiving area is increased, and even when shearing force is applied, the stress is not concentrated at the keyway 1b part as in the conventional case, and damage to the container may occur from this part. The disadvantages will no longer occur.

As is clear from the above explanation, in the present invention, the configuration is as described in the claims for utility model registration, and if there is a container shear, the key attachment part that receives the shearing force in the container is a lock ring. Because it is configured without grooves, the area that receives shearing force is large, and since there are no lock ring grooves in the areas where stress is applied, there is no stress concentration and damage to the container. Excellent results can be obtained.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing the conventional structure of an indirect extrusion press, the left half a of Fig. 2 is a front view of a container of the conventional structure, the right half of Fig. 2 is a front view of the container according to the present invention, and Fig. 3 The figure is a cross-sectional view taken along the line ■ to ■ of Figure 2.
5 is a sectional view taken along lines V to V in FIG. 3, FIG. 6 shows one embodiment of the present invention, and FIG.
7 is a sectional view taken along lines 1 to 2 in FIG. 6. 1...Container, Ia, 1c...Groove,
1b...Keyway, 4...Die stem,
5...Die, 6...Container holster,
7...Shear 10...Stem, 11
...Dummy block, 12...Lock ring, 13...Key.

Claims (1)

[Scope of utility model registration request] In a container device for an extrusion press configured to have a key between a container and a container holder and to detachably lock the container and the container holder with a lock ring, the depth of the lock ring groove provided in the container is determined in the shearing direction. A container device for an extrusion press, characterized in that the depth is set to zero in a direction perpendicular to the shear direction.