JPH115199A - Brake for mechanical press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake for a mechanical press, which controls the abrasion of a facing, and secures the stability in braking, and prevents the dispersion of the accuracy of the press stop position. SOLUTION: A disc 16 is directly fixed at one end of an eccentric axis 4 by a connecting ring 17. The first disc plate 20 is closely touched to a spring 19, which energizes one side of a facing 12 installed in a disc 16, a pin 21, one end of which is closely touched to the first disc plate 20, is slidably installed and the second disc plate 22 is closely touched to the other face of the facing 12. A piston 24, which is closely touched to the other end of the pin 21 and releases the facing 12 clipped between the first and second disc plates 21 and 22, is installed inside a brake body 23, and the brake body 23 which fixes the second disc plate, is guided slidably by a guide pin 25 installed on the side face of the frame of the mechanical press so as to constitute a separate type brake.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separate type brake in which a disk in which a friction plate provided with a facing and a hub are integrally formed is directly fixed to one end of a drive shaft or a crank shaft of a mechanical press. It is.

[0002]

2. Description of the Related Art A separate type brake in which a disk is fixed directly to one end of a drive shaft or a crank shaft of a mechanical press in the prior art is disclosed in Japanese Utility Model Publication No. 60-2348. In Japanese Utility Model Publication No. 60-2348, a friction plate having a hub directly fixed to the shaft end is sandwiched between a holding plate and a friction disk, and a pressing plate that comes into contact with one surface of the friction plate with a biasing spring is inserted through a pin. The friction disk and the brake body are released by a piston provided in the brake body, and are fixed to the frame. By directly fixing the friction plate to the shaft end, the shaft moves in the axial direction via the clutch-side friction plate by the piston provided in the clutch body, and the brake-side friction plate is slightly separated from the friction disk. Helping to release the brakes, brakes.

[0003]

By modifying the brake of the mechanical press in the above-mentioned prior art,
The present invention aims to improve the stability at the time of brake braking and the accuracy of the press stop position by suppressing the wear of the facing that occurs at the time of brake braking and release.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to integrate a friction plate and a hub, each of which is provided with a facing with a fastening member at one end of a drive shaft or a crank shaft of a mechanical press. The formed disk is directly fixed, and a first disk plate contacting with one side of a facing provided on the disk by a spring and a pin contacting one end with the first disk plate are slidably provided. The second disk plate is brought into contact with the other surface.
A piston that comes into contact with the other end of the pin and releases the facing that is sandwiched between the first disk plate and the second disk plate is provided in the brake body, and a guide pin that stands upright on the side surface of the frame of the mechanical press. A separate type brake for slidably guiding a brake body on which a two-disc plate is fixed is constructed.

[0005]

FIG. 1 is an overall view of a mechanical press according to an embodiment of the present invention. As shown in FIG. 1, an eccentric shaft 4 constituting a so-called crankshaft of a mechanical press is rotatably supported by a frame 2A on a crown 2 of the mechanical press 1. The eccentric portions 4A and 4A of the eccentric shaft 4 The connecting members 3 are connected by connecting rods 5 and 5, and the slide 3 moves up and down by rotation of the eccentric shaft 4.

A main motor 6 is connected to one end of the eccentric shaft 4.
A flywheel 8 that rotates via a belt 7 by the power of the flywheel 8 is provided. A clutch 9 that transmits and disconnects the power is provided on a side surface of the flywheel 8, and a flywheel 8 is mounted on the other end of the eccentric shaft 4. A brake 10 for braking is provided. In the center of the mechanical press 1,
A dynamic equilibrium device 11 is provided for eliminating a dynamic imbalance relating to the inertial force of the vertical movement of the slide 3 during the press operation and preventing generation of vibration.

FIG. 2 is a structural view of a separate type brake 10 according to an embodiment of the present invention, and FIG. 3 is a structural view of a clutch 9 used in the present embodiment. As shown in FIG. 2, a brake disc 16 in which a brake friction plate 13 provided with brake facings 12, 12 on both surfaces is integrally formed by sandwiching the brake friction plate 13 between a first ring plate 14 and a first hub 15. It is directly fixed to one end of the eccentric shaft 4 of the mechanical press 1 by a ring 17. Brake disc 1
One surface of the brake facing 12 provided on the first brake disk plate 20 is in contact with a first brake disk plate 20 urged by a first spring 19 provided inside the casing 18. Contact pin 21
Brake disc plate 22 provided with a slidable plate
Abut.

The second brake disc plate 22 is fixed to a brake body 23, and the brake body 23
A first piston 24 is provided inside which comes into contact with the other end of the pin 21 and presses and releases the brake facing 12 sandwiched between the first brake disc plate 20 and the second brake disc plate 22 by pressurized air. A plurality of first guide pins 25, 2
5 stands up and guides the brake body 23 and the second brake disc plate 22 slidably.

As shown in FIG. 3, a boss support 30 is fixed to the side surface of the frame 2A of the mechanical press 1, and the rolling bearings 31, 3 arranged in parallel on the boss support 30.
A flywheel 8 rotatably supported via 1 is provided, and a clutch 9 is provided on a side surface of the flywheel 8. Clutch disk 32 of clutch 9
Is integrally formed by sandwiching a clutch friction plate 34 having clutch facings 33, 33 on both surfaces between a second ring plate 35 and a second hub 36, and an eccentric shaft 4 of the mechanical press 1 by a second fastening ring 37. Is fixed directly to the other end of.

The first clutch disk plate 38 fixed to the flywheel 8 has a plurality of second guide pins 3.
9 and 39 are erected, and the leading end is fitted to the clutch body 40. Between the first clutch disc plate 38 and the clutch body 40 connected by the second guide pins 39, 39, the second clutch disc plate 41 slidably penetrates the second guide pins 39, 39 and is sandwiched. Is established. The second clutch disc plate 41 is provided with the clutch body 4.
The first clutch disc plate 38 and the second clutch disc plate 41 are slidably guided by the second guide pins 39 and 39 by a second piston 42 which is provided inside the cylinder and is pressed by pressure air. 33,
33 is abutted.

The second contacting the clutch facing 33
The clutch disc plate 41 is
When the pressure air in the air chamber 40 </ b> A between the first clutch disc plate 38 and the second piston 42 is exhausted, the air is released by being urged by the second spring 43 provided on the first clutch disc plate 38.

By directly fixing the brake disk 16 and the clutch disk 32 to the eccentric shaft 4, the eccentric shaft 4 is axially moved through the clutch disk 32 by the second piston 42 provided in the clutch body 40 (this embodiment). In the right direction), and slightly separates the brake disc 16 from the second brake disc plate 22 so that the brake 1
Although the second brake disk plate 22 fixed to the brake body 23 is slidably guided by the first guide pins 26, the brake release and the release during the brake release and release are assisted. Brake disc plate 2
One-sided phenomena between the brake facings 0 and 22 and the brake facings 12 and 12 can be prevented, and wear of the brake facings 12 and 12 can be suppressed.

In the embodiment of the present invention, the brake 10 and the clutch 9 are fixed directly to the eccentric shaft 4. However, the brake and the clutch are provided on the drive shaft of a mechanical press provided with a speed reduction mechanism. Needless to say, this may be done.

[0014]

As is apparent from the above description, according to the present invention, it is possible to suppress the abrasion of the facing which occurs at the time of brake braking, secure the stability at the time of brake braking, and prevent the variation in the accuracy of the press stop position. Mechanical press brakes can be provided.

[Brief description of the drawings]

FIG. 1 is an overall front view of a mechanical press according to an embodiment of the present invention.

FIG. 2 is a structural view of a brake according to an embodiment of the present invention.

FIG. 3 is a structural diagram of a clutch used in an embodiment of the present invention.

[Explanation of symbols]

1 is a mechanical press, 2 is a crown, 2A is a frame, 3 is a slide, 4 is an eccentric shaft, 4A is an eccentric part, 5 is a connecting rod, 6 is a main motor, 7 is a belt, 8 is a flywheel, 9 is a clutch, 10 is a brake, 11 is a dynamic balancing device, 12 is a brake facing, 13 is a brake friction plate, 14 is a first ring plate, and 15 is a first ring plate.
Hub, 16 is a brake disc, 17 is a first fastening ring, 18 is a casing, 19 is a first spring, 20 is a first brake disc plate, 21 is a pin, 22 is a second brake disc plate, 23 is a brake body, 24 Is a first piston, 25 is a first guide pin, 30 is a boss support, 31 is a rolling bearing, 32 is a clutch disc,
33 is a clutch facing, 34 is a clutch friction plate,
35 is a second ring plate, 36 is a second hub, 37 is a second fastening ring, 38 is a first clutch disc plate,
39 is a second guide pin, 40 is a clutch body, 40A
Is an air chamber, 41 is a second clutch disc plate, 42
Is a second piston, and 43 is a second spring.

Claims (1)

[Claims] 1. A separate type brake in which a disk in which a friction plate provided with a facing and a hub are integrally formed is directly fixed to one end of a drive shaft or a crankshaft of a mechanical press. A disk directly fixed to one end of a shaft or a crankshaft by a fastening member; b) a first disk plate abutted by a spring biasing one surface of a facing provided on the disk; c) a first disk plate at one end. A second disk plate that is slidably provided with a pin that abuts against the other surface of the facing, and d) abuts on the other end of the pin and is sandwiched between the first disk plate and the second disk plate. A brake body having a piston for releasing the facing inside and a second disk plate fixed; Provided upright on the arm side, the brake body and mechanical press brake, characterized in that the guide pin and a second disc plate slidably guided, in that configuration.