JPH0110112Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clamp device for easily attaching a press mold or a cutter. Conventionally, this type of press mold or cutter has been attached using bolts or the like, or using hydraulic pressure or air pressure.

However, using bolts or the like takes time to attach and detach, and a large tightening force is required, and using hydraulic or pneumatic pressure increases the size of the device.

Therefore, in order to improve these drawbacks of the conventional type, the object of the present invention is to provide a clamping device that has a simple structure and operation and can perform reliable locking.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 5 show a first embodiment, and the reference numeral 1
is the body. The body 1 has a through hole 1a drilled in the horizontal direction, a hole 1b drilled in the vertical direction perpendicular to the hole 1a, a recess 1c formed by cutting out a predetermined width in the middle of the body, and the recess. a hole 1d that penetrates from the bottom surface of the through hole 1a perpendicularly to the through hole 1a;
A square hole 1e communicating with the through hole 1a is provided directly below the through hole 1a.

Reference numeral 2 designates a piston fitted in the through hole 1a of the body 1.

The piston 2 has the square hole 1 approximately at the lower center.
A rectangular groove 2a that opens on the e side, and a hemispherical groove 2 that opens in an inclined manner toward the hole 1d at the upper position on the opposite side.
b, and an elongated hole 2c that passes through one end of the piston in a manner orthogonal to the axial direction.

The fitted piston 2 is then inserted into the body 1.
It is fitted into the rectangular groove 2a from the square hole 1e side of the body 1 and is slidably fitted only in the axial direction by a rotation stopper 3 attached to the piston 2 with a bolt, and both ends are fitted into the through hole 1a of the body 1. Each stopper 4, 4 mounted therein is locked so that movement in the axial direction is restricted.

Next, a clamp member 5 is fitted into the recess 1c of the body 1, and the clamp member 5 is pivotally supported at its substantially central portion by a pin 6 mounted in the body 1 and parallel to the piston 2. has been done.
One end of the clamp member 5 is formed with an inclined hemispherical groove 7a on the lower surface, a head 7b on the upper surface capable of receiving an adjustment jig such as a hexagonal wrench, and a screw is carved on the outer peripheral surface. An adjustment screw 7 is screwed together so that it can be adjusted vertically.

Between the hemispherical groove 2b of the piston 2 and the hemispherical groove 7a of the clamp member 5, a lever 9 made of a cylindrical member having spherical ends is normally installed with a constant inclination.

On the other hand, a presser portion 5b is formed on the other end side of the clamp member 5, and a spring 8 is provided between the lower surface of the clamp member 5 adjacent to the presser portion 5b and the body 1.
is attached and acts in the vertical direction.

Further, an operating member 10 is installed in a vertical hole 1b formed in the body 1. The lower end of the operating member 10 has a small diameter portion 10a eccentric to one side from the shaft center, and the small diameter portion projects into the long hole 2c of the piston 2, and the upper end of the operating member 10 has a hexagonal head. Spanner hook 10b for operation by etc.
is formed.

In addition, a reduced diameter portion 10c is formed in the middle of the operating member 10, and a pin or the like is interposed in the reduced diameter portion.
0 is rotatable within the hole 1b of the body 1.

Although the clamping device having the above configuration is not shown, it is attached to a press machine or the like, and the holding part 5 of the clamping member 5 is
The member w to be fastened is held between the body 1 and the body 1, and its operation will be explained below.

Normally, the clamp member 5 is in the state shown in FIG. 2, and an upward force is applied to the holding portion 5a side of the clamp member 5 by the elastic force of the spring 8 with the pin 6 as a fulcrum.

Therefore, a gap is created between the holding portion 5a and the body 1, and the member w to be fastened is inserted into the gap.

When a spanner is fitted to the spanner hook 10b formed at the upper end of the operating member 10 and rotated in either the left or right direction, an eccentric small diameter portion at the lower end of the operating member 10 projects into the elongated hole 2c of the piston 2. 10a presses the piston 2.

As a result, the piston 2 slides inside the through hole 1a and moves to the left in the drawing, and the lever 9 fitted into the piston shifts from an inclined state to a vertical state, and the upper end of the lever 9 moves toward the clamp member 5. Press the adjustment screw 7 side upward.

Therefore, the clamp member 5 swings about the pin 6 as a fulcrum against the elastic force of the spring 8 so that a downward force is applied to the holding portion 5a side.

By further turning the operating member 10, the lever 9
is raised to a vertical state, and the member w to be fastened inserted between the holding part 5a of the clamp member 5 and the body 1
is pressed and clamped, and when the lever 9 is moved to a position beyond the top dead center (vertical position in this case) and stops rotating, the fastened member w is firmly clamped.

Note that the clamp can be easily released by simply turning the operating member 10 in the opposite direction.

Next, FIG. 6 is a longitudinal section similar to FIG. 2 according to a second embodiment of the present invention, and FIG. 7 is a longitudinal section according to a third embodiment. In this case, the numerals shown in each figure are in the 20s and 30s in place of the numerals used in the first embodiment in order to have a correspondence with the first embodiment and to facilitate explanation. ing.

The second embodiment is provided with two levers 29 for swinging the clamp member 25 in order to increase the clamping force against the fastened member, and the other structure and operation are the same as those of the first embodiment. Almost the same.

In the third embodiment, two levers 39 are provided to increase the clamping force as in the second embodiment.
Whereas the operating members 10 and 20 were provided on the first side, the operating member 30 is provided between the clamp member 35 and the piston 32.

This makes it easy to install in places with limited installation space.

Furthermore, by using two levers as in the second and third embodiments, the piston, the lever, and the clamp member form a parallelogram, and when the lever rises due to the movement of the piston, the clamp is closed. This has the effect that the members can be moved smoothly.

As described above, the clamping device of the present application has an inclined lever interposed between the piston and the clamp member, and moves the piston with the operating member to raise the lever in the vertical direction, thereby swinging the clamp member. The other end portion is configured to clamp the member to be fastened, and the member to be fastened can be reliably and firmly clamped with a simple configuration and operation.

In this case, in particular, loosening due to vibrations can be prevented by moving the vertically raised clamp to a position slightly beyond the vertical position and stopping.

[Brief explanation of drawings]

1 to 5 show the first embodiment of the present application,
1 is an overall perspective view, FIG. 2 is a sectional view taken along the - line in FIG. 1, FIG. 3 is a sectional view taken along the - line in FIG. 2, and FIG. 4 is a sectional view taken along the - line in FIG. 5 is a sectional view taken along the - line in FIG. 3, FIG. 6 is a vertical sectional view corresponding to FIG. 2 according to the second embodiment of the present application, and FIG. 7 is a cross-sectional view corresponding to FIG. 2 according to the third embodiment of the present application. FIG. 3 is a corresponding longitudinal cross-sectional view. Explanation of symbols, 1, 21, 31...Body, 2,
22, 32... Piston, 3, 23, 33... Rotation stopper, 4, 24, 34... Stopper, 5,
25, 35... Clamp member, 6... Pin, 7,
27, 37...adjustment screw, 8...spring, 9,2
9, 39... lever, 10, 20, 30... operating member.

Claims (1)

[Scope of utility model registration request] a body; a clamp member having an intermediate portion pivotally supported on the body so as to be swingable; and a clamp member having a presser portion formed at one end thereof capable of clamping a member to be fastened between the body; a piston that is slidably inserted and disposed across the lower side of the other end of the clamp member; and a piston that is provided with rotation means that abuts the one end of the piston when the piston rotates. an operating member formed with an eccentric shaft portion that presses and slides the clamp member, one end of which is engaged with the other end of the clamp member, and the other end of which is engaged with the piston, and the piston is pressed and slid by the operating member; A clamp device comprising a lever that swings the clamp member by moving between an inclined position and a vertical position.