JPH10305332A - Pressure unit with plural springs - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the generation of a stronger power possible, to reduce man hours greatly for designing, processing and mounting, and to improve the safety as well by using the pressure unit with built-in springs of plural numbers. SOLUTION: The pressure unit comprises a cylinder 12, inside of which is equipped with the plural numbers of springs 14, a movable part 10 which presses the springs upon being pressed from the direction of the upper part 15, and a mounting plate 13 attached at the bottom. The main unit is to be chosen in accordance with the pressure and stroke required at the designing time and is to be set at a given place by bolts and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure unit capable of easily generating a large force by setting a plurality of springs to one.

[0002]

2. Description of the Related Art A spring installation method shown in FIG. 1 is often used as a pressure source for a press die or the like. When installing this spring, its pressure and deflection are calculated, and the number and the mounting position are determined based on the calculation result. FIG.
If the movable range of 1 (upper mold) and 2 (lower mold) is within the spring free length S1, the spring does not dance or jump out and jumps out. It is necessary to provide a guide inside the spring as in 2 and hold the springs one by one. If a large pressure is required, a plurality of springs must be installed. However, there is a drawback that it takes a lot.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned disadvantages of the prior art. FIG. 5 is a cross-sectional view of the pressure unit of the present invention when no pressure is applied, FIG. 6 shows a state where pressure is applied from the direction of 15, and FIG. 7 shows an external shape of the product of the present invention. Is shown. By attaching this pressure unit to one upper mold or two lower molds in FIG. 3 with two to four bolts, the number of steps can be significantly reduced.

[0004]

[MEANS FOR SOLVING THE PROBLEMS] The product of the present invention (Claim 1)
Has an internal structure that has at least four or more coil springs, and sets several types of standards depending on the working pressure and the stroke. Select the best one for the mold design conditions.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 5, reference numeral 10 denotes a movable portion for applying pressure, which is held by a plurality of springs 14. 12 is the movable part 10
Is stopped at a specified position, and serves as a guide when moving. 13 and the cylinder 12 are fixed by welding or the like. The movable part 10 and the fixed plate 13 include
A spring guide 11 for fixing the position of the coil spring is provided. The fixing plate 13 is provided with a mounting hole 16 and is fixed to 1 or 2 in FIG. 3 by a bolt or the like.
In FIG. 5, by applying pressure from 15 directions,
A set stroke S3 can be issued, and FIG. 6 shows a state where pressure is applied from 15 directions. FIG. 3 shows a bottom dead center state in which pressure is applied to the pressure unit of the present invention;
FIG. 4 shows the released state.

[0006]

According to the present invention, there is an effect that a large force can be obtained by attaching one unit, and since the spring is not exposed to the outside,
Even if the spring is broken, there is an effect that the spring is not scattered and is safe.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a method of using a conventional coil spring.

FIG. 2 is a cross-sectional view when a conventional coil spring is fixed to one side.

FIG. 3 is a sectional view showing a use state at the time of bottom dead center of the product of the present invention.

FIG. 4 is a sectional view showing a use state at the time of top dead center of the product of the present invention.

FIG. 5 is a detailed sectional view of the product at the top dead center of the present invention.

FIG. 6 is a detailed sectional view of a bottom dead center of the product of the present invention.

FIG. 7 is an external perspective view of the product of the present invention.

Claims (1)

[Claims] A plurality of coil springs (1) are provided inside a cylinder (12).
A pressure unit in which a circular plate 10 having a cylindrical portion protruding is placed at the upper end of a coil spring 14, and a mounting plate 13 having a mounting hole 16 is provided at a lower end of a cylinder 12. .