JPH0144175Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to the structure of a device that clamps parallelly when attaching a mold to a press or molding machine, or during machining and assembly work of a workpiece. be.

(Prior art) Conventional workpiece clamping devices either use a spacer at the same height as the workpiece on the opposite side of the device from the clamp, or require parallel adjustment using screws. It takes a lot of setup time, and in cases where the height is incorrectly adjusted, it is difficult to clamp the workpiece reliably.

(Problems to be Solved by the Invention) The object of the present invention is to make it possible to adjust the height of a parallel clamp device extremely easily and reliably, and to save labor by shortening the clamp setup time.

(Means for solving the problem) and (effect) A main tightening bolt and an auxiliary bolt are provided in the parallel clamp device, and a gear is provided to each bolt via the bolt (an intermediate gear may be provided if necessary). ) The rotation of the main tightening bolt for height adjustment is transmitted to the auxiliary bolt through synchronously rotating gears, and the main tightening bolt and the auxiliary bolt create vertical movement in parallel.This structure is explained in detail in the drawings below. do.

(Example) FIGS. 3 and 4 show a conventional clamping method and structure during setup for mounting a mold in press working.

FIG. 3 is a front view showing a mold clamping method using a spacer, and FIG. 4 is a front view showing a mold clamping method using an adjustment screw.

When clamping the mold 2 to the press 6 using the clamp plate 1 as shown in the figure, measure the height of the clamp part of the mold 2, and place a spacer 3 or auxiliary bolt at the same height as the clamp part on the opposite side of the clamp part. After performing the height adjustment in step 4, tighten the main tightening bolt 5.

In the case of such a device, setup time is required when clamping the mold, and if parallel adjustment is poor, forces are generated that move the mold back and forth and from side to side.
It has the disadvantage that reliable clamping is difficult.

Next, the present invention will be described in detail with reference to an illustrated embodiment.

FIG. 1 is a plan view when the mold is clamped, and FIG. 2 is a front sectional view of FIG. 1. As shown in the figure, the main tightening bolt 5, the auxiliary bolt 4, and the gear 7 are fixed in the rotational direction by a key 9, and have a spline structure that is free in the vertical direction.
As for the threaded portion of the clamp base 8, if the number of gears is an odd number, the same thread is provided, and if the number is an even number, a reverse thread with the same pitch is provided.

By rotating the main tightening bolt 5, the gear 7
At the same time, the auxiliary bolt 4 rotates synchronously through the clamp base 8, and at the same time performs parallel vertical movement by means of a screw provided on the clamp base 8. This allows the clamp plate 1 to move reliably in parallel, and the mold 2 to be reliably clamped in parallel to the press 6.

(Effects of the invention) According to the invention, it is possible to greatly shorten the setup time, which has been a problem in the past, and parallel clamping can be carried out very easily and reliably, so the effects are extremely large.

[Brief explanation of drawings]

FIG. 1 is a plan view of a press according to an embodiment of the present invention when the mold is clamped, FIG. 2 is a front sectional view of the press according to an embodiment of the present invention when the mold is clamped, and FIG. 3 is a conventional one. FIG. 4 is a front view of the press using the spacer according to the embodiment when the mold is clamped, and FIG. 4 is a front view of the press using the adjustment screw according to the conventional example when the mold is clamped.

Claims (1)

[Scope of utility model registration request] A parallel clamp device is provided with a main tightening bolt and an auxiliary bolt, and the main tightening bolt, which moves up and down by rotation, is provided with a gear that rotates in synchronization with the main tightening bolt, and the auxiliary bolt is provided with a gear, and the auxiliary bolt is provided with a gear. A parallel clamp device characterized in that the gear rotates in synchronization with the gear of the main tightening bolt, and both the main tightening bolt and the auxiliary bolt move up and down in parallel.