JPS6213703Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clamper device for fixing a truck or a stack truck in a coil car, which is an automated press device.

Conventionally, there are various types of clamper devices, which combine a mechanism that operates a clamp rod to clamp an object and a mechanism that rotates the clamp rod to avoid the object, all of which are mechanical and Types in which clamping and unclamping operations are forcibly performed are often used.

The present invention has been made in order to provide a clamper device that is entirely simple and compact, using a mechanism that rotates the clamping rod using gravity.

Hereinafter, an embodiment of the present invention will be described based on the drawings.

In FIGS. 1 and 2, the cylinder 3 is rotatably held in the body 9 by a rotation fulcrum 4 and a bearing 5. That is, the cylinder 3 can freely rotate relative to the body 9. A piston 11 is built into the cylinder 3 and is movable by pressure fluid. The piston 11 has a tightening member 2 attached to the fuselage 9.
A clamp head 1 is fixedly mounted for clamping the device. The clamp head 1 performs a clamping action when the piston 11 is actuated by pressure fluid supplied through a passage provided in the lid 6b of the cylinder 3. Weight 1 inside cylinder 3
0 is provided, and the weight 10 is a spring 7 interposed between the weight 10 and the lid 6a of the cylinder 3.
Pressurized fluid is forced toward the center of rotation of the cylinder 3 and fitted into a second piston 12 fixed to the piston 11 on the opposite side of the clamp head 1, and supplied to a passage provided in the weight 10. As a result, the second piston 12 receives a force in a direction away from the second piston 12.

Pressure fluid is supplied to a passage B provided in the lid 6b of the cylinder 3 and a passage A provided in the weight 10 via a solenoid valve 8.

As is clear from FIG.
A rotary stopper 13 is provided on the opposite side, so that when the clamp rod 1 is unclamped, the cylinder 3 is slightly tilted clockwise and the cylinder 3 is
When it rotates 90 degrees clockwise, it comes into contact with the fuselage 9 and serves to limit the rotation limit.

The effect will be explained below.

(b) When unclamping Pressure fluid supplied to passage B is removed from solenoid valve 8.
When discharged by switching to the neutral position,
At this point, no pressure fluid is supplied to the passage A, so the action of the spring 7 causes the weight 10 to
moves toward the center of rotation of the cylinder 3, and the piston 11 is pushed by the spring 7 via the weight 10, so that the clamp head 1 rises and the clamping member 2 is released. At this time, a moment is applied due to the weight of the rotation stopper 13, so the cylinder 3 rotates slightly clockwise, and then a moment due to the weight of the clamp head 1 causes the clamp head 1 to rotate clockwise in FIG. Rotate.
When the rotation stopper 13 comes into contact with the body 9, the rotation of the cylinder 3 is stopped. It is now in an unclamped state.

(b) When clamping When pressure fluid is supplied to the passage A by switching the solenoid valve 8, the weight 10 moves away from the center of rotation of the cylinder 3. As a result, the counterclockwise moment increases in FIG. 1, so the cylinder 3 overcomes the clockwise moment and rotates counterclockwise, causing the clamp head 1 to stand up. Subsequently, when the solenoid valve 8 is switched to discharge the pressure fluid from the passage A and supply pressure fluid to the passage B, the clamp head 1 is lowered by the action of the piston 11 and the clamping member 2 is moved down.
is clamped to the fuselage 9.

Since the present invention has the above-described configuration, the clamper can be made simple and compact. Therefore, it is a relatively small device and can be used in applications where installation space is small.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view, Fig. 2 is a - sectional view in Fig. 1, 1 is a clamp head, 2 is a tightening member, 3 is a cylinder, 4 is a rotational fulcrum, 5 is a bearing, 6a, 6b is the lid, 7 is the spring, 8 is the solenoid valve, 9 is the fuselage, 1
0 is a weight, 11 is a piston, 12 is a second piston, and 13 is a rotation stopper.

Claims (1)

[Scope of utility model registration request] A cylinder 3 whose upper and lower longitudinally central side surfaces are rotatably supported on a rotational fulcrum 4 of a body 9, a piston 11 that fits into a cylinder chamber in the upper part of the cylinder 3 and is urged downward by pressure fluid, 11
Clamp head 1 fixed above and piston 1
1, a second piston 12 fixedly installed below the cylinder 3; A vertically movable weight 10 that urges the piston 11 upward via the piston 12 of
A rotary stopper 13 is fixed on the side opposite to the body 9 with respect to a vertical plane including the body 9, and abuts against the body 9 to restrict the rotation limit of the cylinder 3, and the piston 11 and the weight 10 are arranged in a fixed order of operation. A clamper device comprising a solenoid valve 8 for switching pressure fluid to control the pressure fluid.