JPH0743503Y2 - Clutch / brake device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement in a clutch / brake device used in a press machine and similar machines.

[Prior Art] Conventionally, a clutch / brake device in which a clutch device and a brake device are interlocked with each other is configured to transmit the rotation of a flywheel in a press machine to a drive shaft (crankshaft) and stop the rotation of the drive shaft. Is used. In many cases, conventionally, a clutch disc is provided on the flywheel side, and a piston for engaging and disengaging the clutch is provided on the drive shaft side.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional configuration, there are usually a plurality of rotary output generating units such as a hydraulic piston with a friction plate, and the mounting holder, hydraulic piping, etc. are considerably heavy. It becomes a member. Further, in order to abut against the mating clutch disc, it is arranged so as to project on the outer periphery of the driven rotary member. For these reasons, the rotational inertial force of the driven-side rotating member is made extremely large, which imposes a heavy load on the brake device or the like for stopping the driven-side rotating member within a short time after releasing the engagement of the clutch device. Alternatively, with a small-capacity braking device, it takes a long time to completely stop, which reduces the operating rate of the machine. In addition, the brake lining on the brake device side is heavily consumed, which is also disadvantageous in terms of maintenance management.

The object of the present invention was devised in view of the above-mentioned conventional problems. A clutch device in which the weight of the driven side rotating member and the rotational inertial force have been remarkably reduced by devising the structure to reduce the load on the brake device, the bearing, etc. Is provided.

[Means for Solving the Problems] In view of the above-mentioned conventional problems, the present invention provides a clutch / brake device that transmits rotation to a drive shaft and brakes the rotation of the drive shaft, so as to be freely rotatable. A clutch disc fixed to the drive shaft is arranged between brackets provided opposite to the flywheel provided, and a piston provided with a friction plate that can clamp the clutch disc is provided reciprocally. Cylinders are provided on the bracket so as to face each other, and a holding member having one lining capable of holding a brake disc fixed to the drive shaft is provided movably in the axial direction of the drive shaft, and the one lining is provided. The holding member is equipped with a cylinder having a piston having the other lining opposed to and reciprocatingly movable.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.

Referring to FIG. 1, FIG. 2 and FIG. 3, the frame 3 of the punching press 1 is composed of right and left side plates 5A, 5B and appropriate connecting plates 7 connecting both side plates 5A, 5B. . In the case of the present embodiment, the frame 3 has a structure in which C-shaped frames face each other to form a gate shape.
It may be a C-shaped frame.

On the frame 3, an upper turret 9 having a large number of punches (not shown) and a lower turret 11 having a die (not shown) corresponding to the punches are rotatably supported vertically facing each other. Further, the frame 3 is provided with a work transfer device 13 which holds the work W and is movable in the front-back and left-right directions. The configurations of the upper turret 9, the lower turret 11, and the work transfer device 13 are those used in the conventional turret punch press, and thus detailed description thereof will be omitted.

The left and right side plates 5A and 5B are rotatably supported in the vicinity of both ends of a drive shaft 15 such as a crank shaft or an eccentric shaft for vertically moving a ram capable of pressing the punch. . A clutch device is provided at one end of the drive shaft 15.
A flywheel 19 incorporating 17 is mounted, and a brake device 21 is mounted on the other end. The right side plate 5B
A motor 25 is attached to the outer side surface of the flywheel 19 via a bracket 23, and the motor 25 is linked to the flywheel 19 via a belt 27. The motor 25, the flywheel 19 and the like are covered by a right side cover 29 mounted on the right side plate 5B, and the brake device 21 is provided on the left side plate.
It is covered by the left side cover 31 attached to 5A.

The drive shaft 15 is rotatably supported on the side plate 5B, and
A flywheel 19 incorporating a clutch device 17 is mounted on one end of the drive shaft 15. More specifically, as shown in FIGS. 4 and 5, the clutch disc 33 of the clutch device 17 is fixed via the key 35 to the drive shaft 15 rotatably supported by the side plate 5B. is there. Further, the clutch disc 33 is integrally fixed to the drive shaft 15 by an end plate 37 with a bolt 39 or the like.

A rotary disc 43 is rotatably supported on the boss portion 33B of the clutch disc 33 via a plurality of bearings 41. As shown in FIG. 4, the rotary disc 43 has a symmetrical shape divided into left and right, sandwiches the clutch disc 33, and uses a plurality of bolts 47 together with a plurality of split ring members 45, which will be described in detail later. The clutch disc is constructed integrally
It is rotatably supported by 33.

At least one split ring member 45 is provided, and in this embodiment, two split ring members are formed as described above, and a plurality of holes or grooves (not shown) are provided, and the split ring members have different masses. The split ring member 45 is held on the rotary disc 43 by a plurality of bolts 47, and the V-belt is attached to the outer circumference.
It has grooves such as 27.

In addition, in the outer peripheral portions of the rotating disk 43 facing each other,
A substantially U-shaped groove 49 is bored as shown in FIG. 5, and a bracket 53 in which each pressing device (cylinder) 51 is built in the groove 49 is provided with a plurality of bolts together with the split ring member 45.
The clutch discs 33 are provided so as to face each other symmetrically by 55.

With the above configuration, at least one split ring member having a mass suitable for the press function and processing conditions is provided on the rotary disc 43 facing the flywheel 19 which is split into two.
45 is clamped, the pressing device 51 is activated, the clutch disc
The flywheel 19 can obtain the moment of inertia that matches the processing conditions by pressing and holding 33 to be integral. Therefore, by selectively selecting and combining the split ring members 45, the split ring members 45 can be freely used according to the function of the press.

The bracket 53 is provided with a hole 57, and the hole 57 is provided with a movable piston 59 which is operated by hydraulic pressure in the left-right direction in FIG. Fourth end of the piston 59
A friction plate 61 is mounted on the right side in the figure,
A plate 63 is fixed to the left side of the drawing by screws 65.

An elastic member 67 such as urethane rubber is inserted between the bracket 53 and the plate 63, and on the left side in FIG. Further, the elastic member
Inside the 67, a collar 69 for detecting the limit wear amount of the friction plate 61 is provided.

Further, the hydraulic pressure for moving the piston 59 in the left-right direction in FIG. 4 is supplied to the oil chamber 71 through a hydraulic system passage described later. That is, the hydraulic pressure as the hydraulic system path is supplied from a hydraulic source (not shown) via a rotary joint 73 having a generally known structure, and a support plate 75 for supporting the rotary joint 73 fixed to the end surface of the rotary disc 43. Flexible pipe passing through oil passage A provided in
It is sent from the oil passage B to the oil chamber 71 via 77. Sealing members 79, 81, and 83 are attached to the piston 59 to prevent oil leakage.

With the above configuration, the hydraulic pressure is supplied from the hydraulic source (not shown) to the oil passages A and B.
Through the oil chamber 71 and moving the piston 59 to the right in FIG. 4, the friction plate 61 mounted on the right side of the piston 59 comes into contact with the rotating clutch disc 33, and the clutch device The 17 clutch will be engaged and the flywheel 19 will be rotated. To disconnect the clutch device 17, hydraulic pressure is removed from the oil chamber 71.
That is, the reaction force of the elastic member 67 causes the piston 59 to move to the fourth position.
It will be performed by moving to the left side in the figure.

By repeating ON / OFF of the clutch device 17, when the friction plate 61 is worn to the wear limit amount, the collar 69 is between the bracket 53 and the plate 63, and is fitted into the piston 59. Therefore, it is restricted by the collar 69 and cannot be further displaced, and therefore the clutch device 17 is not suddenly activated. This state can be almost determined by the contact sound between the collar 69 and the bracket 53, the plate 63 or the contact impact force. Further, when it is difficult to judge due to factory noise, vibration, etc., a small notch groove or the like may be provided at the end of the elastic member 67 so that the remaining gap amount of the collar 69 can be directly viewed and judged. As a result, the wear limit amount of the friction plate 61 can be detected, and a situation such as measurement error or forgetting measurement can be prevented.

When the clutch device 17 is disengaged, the drive shaft
Only the clutch disc 33 is fixed to the 15 side, and the brake device 21 attached to the other end of the drive shaft
The burdened weight is greatly reduced compared to the conventional one.

Furthermore, a piston, which is an output generation unit mounted on the drive side flywheel 19, is provided, and it is easy to increase or decrease the number of pistons mounted or the number of operations, so the output of the clutch device 17 as a whole can be controlled freely. Yes, you can choose freely.

Next, the other end of the drive shaft 15 is rotatably supported by the side plate 5A, and the brake device 21 is attached to the other end of the drive shaft 15. More specifically, as shown in FIG. 6, the boss portion 85B of the brake disc 85 of the brake device 21 is fixed to the drive shaft 15 via the key 87.

A bracket 89 is integrally provided on the upper portion of the side plate 5A. Inside the bracket 89, the brake disc 85 is provided by a guide pin 91 inserted into the side plate 5A and the bracket 89.
A holding member 95 that holds the friction plates 93A and 93B by sandwiching the plate is attached. A groove 97 is formed in the center of the upper portion of the holding member 95, and the guide pin 91 is attached to a fixing member 99 extending in the groove 97 up and down. Fixed member 99
Coil springs 101 and 103 are provided in grooves 97 formed on both sides of the coil spring. As a result, the friction plate 93 held by the holding member 95 is
The A and 93B accurately hold the brake disc 85. Incidentally, linings 103A and 103B are attached to the inner sides of the friction plates 93A and 93B, respectively.
The brake disc 85 is brought into contact with and the brake is applied.

A groove 10 formed on the left side of the holding member 95 in FIG.
A piston 109 is provided in the inside 7 through a plurality of seal members 111. The friction plate 93A is inserted and attached to the right side portion of the piston 109. A cylindrical member 113 having a flange is attached by a pin 115 to a hole formed in the center of the left side portion of the piston 109. The piston 10
A disc spring 119 is interposed between the groove 117 formed in the hole 9 and the sleeve 113S of the cylindrical member 113 by urging it to the right in FIG. The cylindrical member 113 is attached to the left side surface of the holding member 95 in FIG. 6 with a plurality of adjusting bolts 121. Moreover, the collar 123 of which the length is set is fitted into one of the plurality of adjusting bolts 121 so that the space B corresponds to the limit wear amount of the lining 103A attached to the inside of the friction plate 93A.

With the above structure, the groove formed on the left side of the holding member 95.
The hydraulic pressure communicating with the oil passage used in the above-mentioned clutch device 17 is sent to the piston chamber 125 formed between 107 and the piston 109 provided in the groove 107. When hydraulic pressure is supplied to the piston chamber 125, the piston 109 moves to the left in FIG. 6 against the biasing force of the disc spring 119, and the lining 103A of the friction plate 93A is separated from the brake disc 85. Further, by releasing the hydraulic pressure from the piston chamber 125, the piston 109 is urged by the disc spring 119 so that the lining 103A of the return friction plate 93A comes into contact with the brake disc 85 and the brake is applied.

By repeatedly turning the brake device 21 on and off, the friction plate 9
Wear occurs on the linings 103A and 103B of the 3A and 93B. Adjust the limit wear of the linings 103 and 103B beforehand with the adjustment bolt 121.
It will be detected by the collar 123 inserted in the.

[Effects] As will be understood from the above description of the embodiments, the present invention is essentially a clutch / brake device that transmits rotation to the drive shaft (15) and brakes the rotation of the drive shaft (15). The drive shaft (15) between the bracket (53) provided so as to face the flywheel (19) rotatably provided.
A clutch disc (33) fixed to the clutch disc (33) is arranged, and a piston (59) having a friction plate (61) that can press the clutch disc (33) is reciprocally movable. Provided facing each other on the bracket (53),
A holding member (95) provided with one lining (103B) that can clamp the brake disc (85) fixed to the drive shaft (15) is provided so as to be movable in the axial direction of the drive shaft (15), A cylinder having a piston (109) having the other lining (103A) facing the one lining (103B) so as to reciprocate is attached to the holding member (95).

As is apparent from the above structure, in the present invention, the clutch disc 33 is attached to the drive shaft 15, and the cylinder provided with the piston 59 provided with the friction plate 61 that clamps the clutch disc 33 is the flywheel 19 side. It is provided in. Further, a brake disk 85 is attached to the drive shaft 15, and a brake device 21 including a lining that can press the brake disk 85 is provided separately.

Therefore, according to the present invention, there are few accessories that rotate integrally with the drive shaft 15, and it is possible to rapidly transmit the rotation from the flywheel 19 to the drive shaft 15 and to stop the rotation of the drive shaft 15 rapidly. Is.

Further, in the present invention, the holding member 95 in the brake device 21 is provided so as to be movable in the axial direction, and the piston 109 having one lining 103B provided on the holding member 95 and the other lining 103A facing the lining 103B. Since the cylinder provided with is mounted on the holding member 95,
Brake disc 85 fixed to 15 with both linings 10
When the brakes are clamped by 3A and 103B for braking, no force in the thrust direction acts on the brake disc 85, and the brake disc 85 is not deformed in the thrust direction.

[Brief description of drawings]

FIG. 1 is a front view of a punching press embodying the present invention. FIG. 2 is a plan view of FIG. FIG. 3 is a side view of FIG. FIG. 4 is an enlarged cross-sectional view of the IV arrow part in FIG. FIG. 5 is an enlarged cross-sectional view of the V arrow portion in FIG. FIG. 6 is an enlarged cross-sectional view taken along the arrow VI in FIG. [Description of Symbols Representing Main Parts of Drawing] 15 ... Drive Shaft, 17 ... Clutch Device 19 ... Flywheel, 21 ... Brake Device 33 ... Clutch Disc, 51 ... Pressing Device (Cylinder) 59 ... Piston, 61 ... Friction Plate 85 … Brake discs 93A, 93B… Friction plates, 95… Holding members 103A, 103B… Lining 109… Pistons

Claims (1)

[Scope of utility model registration request] 1. A clutch / brake device for transmitting rotation to a drive shaft (15) and braking the rotation of the drive shaft (15), which is provided facing a rotatably provided flywheel (19). A clutch disc (33) fixed to the drive shaft (15) is arranged between the brackets (53), and a piston (59) is provided with a friction plate (61) that can clamp the clutch disc (33). Pressure cylinders (51), which are reciprocally movable, are provided on the bracket (53) so as to face each other.
A holding member (95) provided with one lining (103B) that can clamp the brake disc (85) fixed to the drive shaft (15) is provided so as to be movable in the axial direction of the drive shaft (15), A clutch characterized in that the holding member (95) is equipped with a cylinder having a piston (109) provided with the other lining (103A) facing the one lining (103B) so as to be reciprocally movable. -Brake device.