JPS5814014Y2 - Clamp mechanism in press machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mold clamping mechanism in a press machine.

In press machines, saving labor and time for setting press dies is an important element for improving productivity and reducing costs.

By the way, the clamp mechanism in a press machine is generally mounted by engaging a T-shaped leg part integral with the clamp body with a T-shaped groove of a bolster plate.

However, if the shape to be processed by the press machine changes and the shape and dimensions of the mold are different, the clamping position can be adjusted by sliding along the T-shaped groove of the bolster plate, so the mold Depending on the shape and dimensions, the clamping mechanism may not be able to clamp it.

In addition, the T-shaped leg that is integrated with the clamp body is pre-shaped to match the T-shaped groove of the bolster plate of the press machine, so the clamp mechanism is not compatible and cannot be used when replacing or using other press machines. In some cases, the entire clamping mechanism had to be replaced.

The present invention relates to a clamp mechanism in a press machine, and is an attempt to solve the above-mentioned problems of the conventional clamp mechanism.

Its features include a clamp body placed on a bolster plate, a horizontal shaft that supports a presser lever whose rear end is pushed up by a hydraulic cylinder, and a head and a bolster that are supported by a seat formed on the clamp body. A support rod having a base that engages with the T-shaped groove of the plate is vertically installed to be rotatable and removable as a separate body from the clamp body.

The purpose of this invention is that it can be installed using the T-shaped groove of the bolster plate, the clamp position can be adjusted according to the shape and dimensions of the mold, and only some parts can be replaced. An object of the present invention is to provide a clamp mechanism for a press machine that can save labor and time for mold setting by making the clamp mechanism compatible with each other.

The clamp mechanism A according to the present invention will be explained below with reference to illustrated embodiments.

Reference numeral 1 denotes a clamp body, which is placed on a bolster plate 2 on the bottom surface, with a presser lever 3 on the top, a hydraulic cylinder 4 for pushing up the lever on the rear, and a support rod 5 on the lower front.
are rotatable and removable relative to the main body 1, and are each provided with a restoring spring 6 in the center.

That is, the presser bar 3 is pivotally supported by a horizontal shaft 8 in a groove 7 formed in the upper part of the clamp body 1 from front to back, so that the front and rear parts thereof protrude.

The hydraulic cylinder 4 is integrally attached to the rear part of the clamp body 1 with a mounting screw 9, and the bottom surface is attached to a bolster plate 2.
The upper end of the piston rod 10 pushes up the rear lower surface of the presser lever 3 so that the front part of the lever 3 is pushed down.

The support frame 5 is formed by engaging a short rectangular prism-shaped base 11 formed at the bottom with a T-shaped groove 12 of the bolster plate 2, and extending a cylindrical part 13 formed above it vertically on the front part of the clamp body 1. A horizontal pin 15 for retaining the clamp is removably connected to the clamp body 1 in the front position by removably engaging with the concave groove 14, and a short cylindrical head 16 is formed on the upper part. It is rotatably supported by a stepped seat part 17 formed from the front part of the main body 1.

The restoring spring 6 has its upper end abutted against the inner upper surface of the spring interior hole 18 formed from the lower part of the slump body 1, and its lower end is suspended from the rear part of the presser lever 3 into the spring interior hole 18. The presser lever 3 is hooked onto the lower end head 20 of the bolt 19 to pull the rear part of the presser lever 3 downward.

In the figure, 21 is a cylinder lid, 22 is a pressure oil inlet, 2
3 indicates a die plate, and 26 indicates a horizontal shaft for supporting the bolt 19 on the clamp body 1.

Next, the operating conditions and effects of the present invention will be explained using the above embodiments.

The clamp mechanism A is installed by placing the lower surface of the clamp body 1 on the upper surface of the bolster plate 2, and attaching the lower base 11 of the support rod 5, which is attached separately from the main body 1, to the T-shaped groove 1 formed in the bolster plate 2. The clamp mechanism A is thereby mounted so as to be slidable along the T-shaped groove 12.

This clamp mechanism A can be installed in accordance with the shape and dimensions of the mold. First, Fig. 5 shows the installation state in which the longitudinal direction of the presser lever 3 is aligned with the T-shaped groove 12 formed in the bolster plate 2. be.

This is the same as mounting using a conventional clamp mechanism of this type, but for example, when the die plate 23 is placed on the bolster plate 2 in a press machine in which the T-shaped groove 12 is provided in the left-right direction of the bolster plate 2, If there is room for attaching the clamp mechanism A to the T-shaped grooves 12 on both sides, attach the clamp mechanism A there.

Then, with the long direction of the presser lever 3 aligned with the T-shaped groove 12, presser lever 3
This is the way to press it.

Next, FIG. 6 shows a state in which the presser lever 3 is installed with its longitudinal direction perpendicular to the T-shaped groove 12 formed in the bolster plate 2, which cannot be installed with conventional clamp mechanisms of this type. .

For example, if the die plate 23 is long in the left-right direction and short in the front-back direction, and it is placed on the bolster plate 2,
When the shape groove 12 does not have enough room to attach the clamp mechanism A,
If there are T-shaped grooves 12 at the front and rear positions of the die plate 23,
The clamp mechanism A is attached to the T-shaped groove 12, and the crank body 1 is rotated around the support bolt 5, and the die plate 23 is rotated so that the longitudinal direction of the presser lever 3 is perpendicular to the T-shaped groove 12.
is pressed down with a presser lever 3 from the front and back positions.

Further, FIG. 7 shows a state in which the presser lever 3 is mounted with the longitudinal direction thereof set at an arbitrary angle of 0 to 90 degrees with respect to the T-shaped groove 12, which also cannot be mounted using a conventional clamp mechanism.

For example, if the die plate 23 is long in the left-right direction and the front-back direction, and there is no room to attach the clamp mechanism A to the T-shaped groove 12 from either side, the four corners of the die plate 23 may be cut with a telter. be.

That is, the T-shaped groove 1 on the corner side of the die plate 23
Attach the clamp mechanism A to the die plate 23, rotate the clamp body 1 around the support rod 5, and hold the presser lever 3 in such a way that the longitudinal direction thereof is perpendicular to the side end surface 24 of the corner of the die plate 23. good.

When replacing the clamp mechanism A or installing it on another press machine, remove the retaining pin 15, remove the support rod 5, and remove the base 11 that engages with the T-shaped groove 12 of the bolster plate 2 of the press machine. It can be attached to a press machine simply by replacing the support rod 5 with the support rod 5.

In the above embodiment, the support rod 5 is removably provided by engaging with the groove 14 formed in the front part of the crank body 1 and being locked with the retaining pin 15, but the present invention is not limited to this. For example, as shown in FIG. 4, the groove 14 formed in the front part of the clamp body 1 is deep, the seat part 17 is not opened forward, and the head part 16 of the support rod 5 is formed shallowly in front of the seat part 17. It may be configured to be locked at the portion 25 to prevent it from coming off.

Further, the support rod 5 may be provided to be removable in the axial direction from the clamp body 1 by making the head 16 or the base 11 of the support rod 5 removable in the axial direction using a screw or other means.

As is clear from the above, the clamping mechanism in the press machine according to the present invention is installed using the T-shaped groove of the bolster plate, and the support rod, which has a base that fits in the T-shaped groove, is separate from the clamp body. It is removable from the body.

Therefore, unlike conventional products of this type, it can be installed on existing press machines with T-shaped grooves by replacing only the support rod, and it can also be installed on other press machines by replacing the clamp mechanism. It now has versatility and compatibility.

In addition, the clamp body and the support rod are rotatable relative to each other.

Therefore, as with conventional clamping mechanisms of this type, the presser lever can be placed in the same direction as the T-shaped groove of the bolster plate, as well as the presser lever can be placed perpendicular to the T-shaped groove, which is impossible with conventional clamp mechanisms. It is now possible to press in any direction depending on the shape and dimensions of the die plate.

Therefore, the present invention is useful as it contributes to labor saving and time reduction in mold setting.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a vertical side view, FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 4 is a cross-sectional plan view showing another embodiment, and FIGS. 5, 6, and 7 are all schematic plan views showing the state of use. Drawing code, A... Clamp mechanism, 1...
・Clamp body, 2... Bolster plate, 3
... Presser lever 4 ... Hydraulic cylinder,
5...Support rod, 8...Horizontal shaft, 11...
... Base, 12 ... T-shaped groove, 16 ...
...Head, 17... Seat.

Claims (1)

[Scope of utility model registration request] In a clamping mechanism for a press machine in which the rear part of a presser lever 3 supported by 8 shafts on the clamp body 1 is pushed up by a hydraulic cylinder 4, the hydraulic cylinder 4 is integrally attached to the rear part of the clamp body 1, and the T-shape of the bolster plate 2 is The support rod 5 with the base 11 engaged in the groove 12 is a separate member that can be removed from the clamp body 1, and the seat 17 of the clamp body 1 is rotatable with respect to the support rod 5. The head 16 of the support rod 5 is supported by
Clamp mechanism in press machine.