JPH0320080Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch for a press machine.

Conventionally, the clutch that dynamically connects and disconnects the rotary shaft of a press machine and the flywheel rotatably supported on the rotary shaft was installed between the outer surface of the flywheel and the rotary shaft. The disadvantage is that the protruding length of the rotating shaft becomes large and the weight of the clutch imparts a large bending moment to the rotating shaft.

The purpose of the present invention is to eliminate this drawback by providing a friction plate in the center of the flywheel, and installing a cylinder device for dynamic disconnection inside the flywheel, thereby shortening the protrusion length of the rotating shaft of the press from the machine body. An object of the present invention is to provide a clutch for a press machine that can reduce the bending moment of a rotating shaft. Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, the structure of the clutch is shown.

A press body 1 rotatably supports a press rotating shaft 2. A flywheel 4 is rotatably supported at the end of a rotary shaft 2 protruding from the body 1 via two ball bearings 3, 3. There are two ball bearings 3, 3 on the rotating shaft 2.
A clutch hub 5 is fixed at a position between.
A clutch plate 6 having internal teeth that mesh with the external teeth of the clutch hub 5 is held on the outer periphery of the clutch hub 5 so as to be allowed to move slightly in the axial direction. Friction plates 7 are attached to both sides of the outer periphery of the clutch plate 6, respectively.
A receiving plate 8 is fixed to the inner surface of the flywheel 4 on the body 1 side, facing the friction plate 7 of the clutch plate 6. On the opposite side, a push plate 9 that is guided by the inner periphery of the flywheel 4 and is movable slightly in the axial direction is provided in opposition. A cylinder chamber 10 facing in the axial direction is provided near the end surface of the rotary shaft 2 in a portion of the flywheel 4 opposite to the body 1, and a piston 11 is fitted therein. A pin 13 that slidably penetrates the bottom plate 12 of the cylinder chamber 10 is provided between the piston 11 and the push plate 9.
There are multiple books. At the center of the end face of the flywheel 4 on the side opposite to the fuselage 1, there is an air supply metal fitting 1 having an air supply/discharge port (not shown) communicating with the cylinder chamber 10.
4 is rotatably provided.

When compressed air is supplied to the cylinder chamber 10 from the air supply metal 14, the piston 11 is urged toward the fuselage 1 side, presses the push plate 9 against the friction plate 7 of the clutch plate 6 via the pin 13, and the flywheel 4 The clutch plate 6 is sandwiched between the clutch plate 6 and the receiving plate 8, and the rotational force of the flywheel 4 is transmitted to the rotating shaft 2 via the clutch hub 5. The surface of the push plate 9 on the friction plate 7 side and the flywheel 4
A plurality of springs 15 are provided between the push plate 9 and the inner surface thereof to bias the push plate 9 in a direction opposite to the biasing force of the piston 11. An oil filler port 16 that supplies lubricating oil to the push plate 9 and the clutch plate 6, and an oil filler port 17 that supplies lubricant oil to the piston 11 are provided on the outer peripheral surface of the flywheel 4. A V-groove (not shown) is provided on the outer periphery of the flywheel 4, and the flywheel 4 is connected to a main motor (not shown) by a V-belt.

Next, we will discuss the effect. In the state shown in FIG. 1, the air in the cylinder chamber 10 is exhausted from the air supply fitting 14, and the piston 11 is moved to the right via the push plate 9 and pin 13 by the biasing force of the spring 15, and the clutch is disengaged. Rotating shaft 2 is a brake (not shown)
It has been stopped by. When operating the press, compressed air is supplied from the air supply fitting 14 to the cylinder chamber 10 at the same time as the brake is released, and the piston 1
1 is biased leftward to press the push plate 9 against the friction plate 7 of the clutch plate 6 through the pin 13, thereby sandwiching the clutch plate 6 between it and the receiving plate 8. The rotational force of the flywheel 4, which is rotationally driven by the main motor, is transmitted to the rotating shaft 2 via the clutch plate 6 and clutch hub 5. Since the clutch is installed inside the flywheel 4 and the clutch plate 6 is provided between the ball bearings 3 and 3 that support the flywheel 4, the center of gravity of the flywheel 4 can be brought closer to the fuselage 1, and the flywheel The rotating shaft 2 receives centrifugal force due to the weight of 4 and unbalanced weight.
The bending moment can be reduced.

As is clear from the above description, according to the present invention, by providing the friction plate between the ball bearings that support the flywheel, it is possible to shorten the protrusion length of the rotating shaft that supports the flywheel and clutch from the aircraft body. Therefore, the bending moment of the rotating shaft can be reduced, and the accuracy and life of the supporting part of the rotating shaft are less likely to be impaired, which has great practical effects and advantages.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the embodiment. 1 is the press body, 2 is the rotating shaft, 3 is the ball bearing, 4 is the flywheel, 5 is the clutch hub, 6 is the clutch plate, 7 is the friction plate, 8 is the receiving plate, 9
is a push plate, 10 is a cylinder chamber, 11 is a piston, 1
2 is a bottom plate, 13 is a pin, 14 is an air supply metal fitting, 15 is a spring, 16 is a fuel filler port, and 17 is a fuel filler port.

Claims (1)

[Claims for Utility Model Registration] In a clutch that dynamically connects and disconnects the flywheel and rotating shaft of a press machine, it surrounds the shaft end of the rotating shaft 2 protruding from the body 1 of the press, and has a space between the rotating shaft 2. A flywheel 4 is rotatably supported by ball bearings 3, 3 fitted with a space between them, and a flywheel 4 is provided with a hollow portion corresponding to the space between the ball bearings 3, 3, and a space between the ball bearings 3, 3 of the rotating shaft 2. , a friction plate 7 which is restrained from rotation and supported so as to be able to move slightly in the axial direction; a cylinder device that presses and holds the friction plate 7 against the inner surface of the flywheel 4; and a spring 15 that is provided between the inner surface of the flywheel 4 and the piston 11 and biases the piston 11 in a direction that pushes the piston 11 back. A clutch for a press machine comprising: