JPH0318080Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a press clutch.

Conventionally, in a press, a flywheel driven by a main electric motor is rotatably supported around the rotation axis of the press by a pair of ball bearings.
A clutch hub is provided on a rotating shaft extending outward from the flywheel, a housing is provided on the flywheel that protrudes around the clutch hub, and friction plates that engage with the clutch hub and friction plates that engage with the housing are alternately incorporated into the shaft. A cylinder device fixed to the flywheel is installed on the outside of these friction plates, and the pistons are moved between the friction plates by compressed air. A clutch was provided to move and press toward. Therefore, the rotating shaft of the clutch is long and protrudes, and a large load is applied to the supporting part of the rotating shaft.In addition, the clutch protrudes from the side of the flywheel, which increases the size of the clutch, and the protruding part rotates together with the flywheel. There were drawbacks such as the need to pay extra attention to interference.

The purpose of the present invention is to eliminate these drawbacks, and by incorporating the clutch into the flywheel by utilizing the empty space of the flywheel, the outer size is made smaller, there is no protrusion, so the appearance is beautiful, and the rotating shaft is shortened. To provide a press clutch capable of reducing the load on a support part. Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a rotary shaft 2 rotatably supported by a press body 1 is connected to a flywheel 4 via a pair of ball bearings 3, 3 on the outer periphery of its end.
is rotatably provided. flywheel 4
The inside is empty, and a clutch hub 5 is fixed to the rotating shaft 2 between ball bearings 3, 3. A housing 6 is fixed to a portion of the flywheel 4 facing the outer periphery of the clutch hub 5. Friction plates 7 having internal teeth that mesh with the external teeth of the clutch hub 5 and friction plates 8 having external teeth that mesh with the internal teeth of the housing 6 are installed alternately.
One side (the left side in the drawing) of the friction plates 7 and 8 abuts the flywheel 4, and a push plate 9 for pushing the other side in the axial direction is slidably provided on the inner diameter portion of the flywheel 4. A partition wall 10 is provided outside the push plate 9 (on the right side in the figure). The partition wall 10 has a rotating shaft 2
A plurality of guide pins 11 are erected toward the push plate 9 on the same circumference centered on the axis of the press plate 9 . A hole is provided in the push plate 9 at a position corresponding to the guide pin 11 of the partition wall 10, and the push plate 9 is slidably guided by the guide pin 11.

A lid 12 of a vacant chamber of the flywheel 4 whose interior is a cylinder is fixed to the outside of the partition wall 10. A piston 13 that moves axially toward the partition wall 10 is fitted into the cylinder of the lid 12 . A plurality of pins 14 are provided between the piston 13 and the push plate 9 on the same circumference and slidably penetrate the partition wall 10. A rotary joint 15 is connected to the center of the lid 12.
A compressed air supply/discharge port 16 provided in the piston 13 communicates with the right cylinder chamber of the piston 13. In order to push back the piston 13 and push plate 9 and release the contact between the friction plates 7 and 8 when compressed air is exhausted from the supply/discharge port 16, a plurality of springs 17 are inserted through the housing 6 and arranged on the same circumference. is provided between the push plate 9 and the inner surface of the flywheel 4.

Next, we will discuss the effect. When the clutch is engaged, compressed air is supplied from the supply/discharge port 16 of the rotary joint 15. The piston 13 moves to the left and presses the friction plates 7 and 8 via the pin 14 and the push plate 9.
is pressed against the inner surface of the flywheel 4. The friction plates 7 and 8 are in close contact with each other and transmit the rotational force of the flywheel 4 to the rotating shaft 2 via the housing 6, the friction plates 7 and 8, and the clutch hub 5. At this time, the push plate 9 is engaged with the flywheel 4 via the partition wall 10 by the guide pin 11, so that the friction plates 7 and 8 are pressed.
Close contact is quickly and effectively achieved. When the air is exhausted from the supply/discharge port 16, the biasing force of the piston 13 is removed, the piston 13 is biased to the right by the spring 17 via the push plate 9 and the pin 14, and moves, and the friction plates 7 and 8 are rapidly loosened. The clutch is broken and the close contact is broken.

As is clear from the above description, according to the present invention, the push plate 9 supports the guide pin 11 erected on the partition wall 10.
Since the clutch is engaged with the flywheel and rotates together with the flywheel 4, power is quickly transmitted when the clutch is brought into contact. It has great practical effects and advantages, such as the absence of any other protrusions, which makes it beautiful and compact, and the rotating shaft can be shortened, so the load on the support part due to overhang can be reduced compared to conventional models.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a flywheel section provided with an embodiment. 1 is the fuselage, 2 is the rotating shaft, 3 is the ball bearing, 4 is the flywheel, 5 is the clutch hub, 6
is a housing, 7 is a friction plate, 8 is a friction plate, 9 is a push plate, 10 is a partition, 11 is a guide pin, 12 is a lid,
13 is a piston, 14 is a pin, 15 is a rotary joint, 16 is a supply/discharge port, and 17 is a spring.

Claims (1)

[Claims for Utility Model Registration] In a clutch that connects and disconnects power between the rotary shaft of the press and the flywheel, it is rotatably provided at the shaft end of the rotary shaft 2 protruding from the body of the press, and A bulkhead 10 provided in the middle of a cavity opening into the air, a flywheel 4 whose body side is supported by ball bearings 3, 3, a clutch hub 5 fixed to the rotating shaft 2 between the ball bearings 3, 3, A clutch housing 6 is provided on the inner periphery of the flywheel 4 in correspondence with the clutch hub 5, and friction plates 6 and 7 are provided to engage with the clutch hub 5 and the clutch housing 6, respectively, and are stacked alternately in the axial direction. , a press plate 9 provided between the friction plates 6 and 7 and the partition wall 10 and movable in the axial direction guided by a guide pin 11 erected on the side surface of the partition wall 10; and a hollow opening of the flywheel 4. a lid 12 having a piston 13 which is provided in a cylinder chamber that closes off the partition wall and is urged toward the partition wall 10 with pressurized air in a cylinder chamber that opens inward; and the pin 14 with both end surfaces in contact with the push plate 9.
A press clutch comprising: a spring 17 which is housed in a hole passing through the housing 6 in the axial direction and biases the flywheel 4 and the push plate 9 in a direction to separate them from each other.