Clutch control system of cold header

Abstract

The utility model discloses a clutch control system of a cold header. The clutch control system comprises a fixed seat, a rotating shaft, a belt pulley, an output gear, a multi-piece pneumatic clutch and a pneumatic release type spring brake. The rotating shaft is installed on the fixing base through a bearing. The output gear is fixed to the rotating shaft through a first tensioning sleeve. One end of the rotating shaft is in transmission connection with the belt pulley through the clutch, and the other end of the rotating shaft is connected with the brake; the clutch and the brake are communicated with the air pump through air pipes, and the hole pipe is fixed to the rotating shaft through a second tensioning sleeve. The system controls the clutch to be pressed or separated (transmitting or cutting off power) and the brake to be released or braked (releasing or locking a rotating shaft) through the air pump, and stable starting, smooth gear shifting, overload protection and torsional vibration attenuation are achieved. The problem that an existing cold header clutch is prone to being damaged due to overload is solved, and equipment reliability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold header technical field, concretely relates to a kind of clutch control system for cold header, to solve the problem that existing cold header is easily damaged in operation due to sudden overload or impact. BACKGROUND

[0002] Cold header is the key equipment of metal plastic processing, which realizes feeding, cutting, upsetting and other processes by main motor driving transmission system. Clutch control system is usually arranged in transmission system to control power transmission and disconnection, and ensure the precise control of slider movement. However, if the clutch of existing cold header encounters sudden overload or impact in operation, the clutch needs to directly bear overload energy, which is easily damaged due to friction overheating or structural deformation, affecting the service life of equipment and production continuity. SUMMARY

[0003] The utility model aims at providing a kind of cold header clutch control system, which realizes overload protection, smooth start and torsional vibration attenuation by optimizing the cooperative control structure of clutch and brake, to avoid the damage of clutch due to overload.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of cold header clutch control system, comprising fixed seat, rotating shaft, belt pulley, output gear, clutch and brake;The rotating shaft is rotatably mounted on the fixed seat by the first bearing;The output gear is coaxially fixedly connected to the rotating shaft by the first tensioner;The belt pulley is rotatably mounted on one side of the fixed seat by the second bearing, and one end of the rotating shaft is drivingly connected with the belt pulley through the clutch;The other end of the rotating shaft is connected with the brake, and the brake is fixedly installed on the fixed seat;The clutch is a multi-plate pneumatic clutch, and the brake is a pneumatic release type spring brake;The clutch and the brake are communicated with the air pump through the air pipe respectively;The middle hole pipe of the clutch and the middle hole pipe of the brake are coaxially fixedly connected to the rotating shaft through the second tensioner.

[0005] Further, the multi-plate pneumatic clutch comprises driving disc, driven disc and piston assembly, the driving disc rotates synchronously with the belt pulley, the driven disc rotates synchronously with the rotating shaft, and the piston assembly drives the driving disc and the driven disc to press or separate by air pressure.

[0006] Further, the pneumatic release type spring brake comprises brake shell, brake shoe and return spring, the brake shoe is pressed against the outer wall of the middle hole pipe by the return spring, the brake shell is fixed on the fixed seat, and the middle hole pipe is released from braking when the brake shoe is driven by air pressure to separate from the brake shell.

[0007] Furthermore, a damping spring is provided between the driving plate and the driven plate of the multi-plate pneumatic clutch to buffer the periodic torsional vibration impact of the transmission shaft.

[0008] The beneficial effects of the utility model are:

[0009] 1. Smooth start: The multi-plate pneumatic clutch contacts the friction plates through progressive pressing, eliminating the impact at the start and avoiding equipment shaking.

[0010] 2. Ensure smooth gear shifting: The clutch is disengaged first when shifting gears, reducing the pressure during gear engagement, reducing impact, and extending the life of the transmission system.

[0011] 3. Overload protection: When a sudden overload occurs, the clutch master and slave plates slip, consuming the overload energy through friction to prevent damage to the clutch and subsequent components.

[0012] 4. Torsional vibration shock attenuation: The damping spring in the clutch can buffer the periodic torsional vibration of the drive shaft and reduce equipment fatigue loss.

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of a specific embodiment of the present utility model;

[0015] Figure 2 It is a schematic cross-sectional structural diagram of a specific implementation method of the present utility model.

[0016] Explanation of the accompanying drawings: 1-fixed seat; 2-rotating shaft; 3-first bearing; 4-output gear; 5-first tensioning sleeve; 6-pulley; 7-second bearing; 8-clutch; 9-brake; 10-second tensioning sleeve, 11-driving disc; 12-driven disc; 13-piston assembly. DETAILED DESCRIPTION

[0017] The present invention is described in detail below through examples, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0018] like Figure 1 、 Figure 2 As shown, this embodiment discloses a clutch control system for a cold heading machine, comprising a fixed base 1, a rotating shaft 2, a pulley 6, an output gear 4, a clutch 8, and a brake 9. The fixed base 1 serves as the mounting base, and the rotating shaft 2 is rotatably supported on the fixed base 1 via a first bearing 3. The output gear 4 is interference-connected to the rotating shaft 2 via a first tensioning sleeve 5, ensuring synchronous power output. The pulley 6 is mounted on the right side of the fixed base 1 via a second bearing 7 and can rotate freely relative to the rotating shaft 2.

[0019] The clutch 8 is a multi-plate pneumatic clutch, which is installed on the right end of the rotating shaft 2 and is in transmission connection with the belt pulley 6. The clutch 8 mainly comprises a driving disc 11, a driven disc 12 and a piston assembly 13. The driving disc 11 is connected with the belt pulley 6 through bolts, so that the two are synchronously rotated. The driven disc 12 is connected with the rotating shaft 2 through a spline. The piston assembly 13 drives the driving disc 11 and the driven disc 12 to be pressed together (power transmission) or separated (power cut-off) through air pressure. The middle hole pipe of the clutch 8 is fixed with the rotating shaft 2 through the second tension sleeve 10, so as to ensure torque transmission.

[0020] The brake 9 is a pneumatic release type spring brake, which is installed on the right side of the fixed seat 1. The brake 9 mainly comprises a brake shell, a brake shoe and a return spring. The brake shell is fixed on the fixed seat 1, and the brake shoe and the return spring are arranged in the brake shell. The middle hole pipe passes through the brake shoe. Under normal circumstances, the return spring presses the brake shoe to tightly hold the middle hole pipe (brake is implemented). When the air pump supplies air to the brake 9, the air pressure pushes the brake shoe to separate from the middle hole pipe (brake is released).

[0021] The middle hole pipe of the clutch 8 and the middle hole pipe of the brake 9 are coaxially fixed and connected to the rotating shaft 2 through the second tension sleeve 10.

[0022] When working, the main motor is started, and the air pump is started synchronously.

[0023] Air is supplied to the brake 9, the brake shoe separates from the middle hole pipe, and the brake is released.

[0024] Air is supplied to the clutch 8, the piston assembly 13 pushes the driving disc 11 and the driven disc 12 to be pressed together, the main motor drives the belt pulley 6 to rotate through the belt, the belt pulley 6 drives the rotating shaft 2 to rotate through the clutch 8, and then the subsequent transmission components (such as a crankshaft and a sliding block) are driven to work through the output gear 4, so as to realize processes such as feeding and upsetting.

[0025] When a sudden overload (such as blank blocking) occurs, the load torque exceeds the rated friction force of the clutch 8, the driving disc 11 and the driven disc 12 slip, and the overload energy is consumed through friction, so as to avoid damage to the clutch and the subsequent components. At the same time, the damping spring in the clutch 8 buffers the torsional vibration impact of the transmission shaft, and reduces the fatigue loss of the equipment.

[0026] When stopping or braking is needed, the air pump stops supplying air.

[0027] The piston assembly 13 of the clutch 8 is reset, the driving disc 11 and the driven disc 12 are separated, and the power transmission between the belt pulley 6 and the rotating shaft 2 is cut off.

[0028] The return spring of the brake 9 pushes the brake shoe to tightly hold the middle hole pipe, and brakes the rotating shaft 2, so as to ensure that the equipment is quickly stopped.

[0029] The above technical scheme can achieve the following technical effects:

[0030] 1. Smooth start: The multi-plate pneumatic clutch eliminates the impact of the starting moment and avoids equipment shaking through the gradual compression of the friction plate contact.

[0031] 2. Smooth gear shifting: The clutch is first separated during gear shifting, reducing the pressure when the gears mesh, reducing impact, and prolonging the life of the transmission system.

[0032] 3. Overload protection: When a sudden overload occurs, the clutch driving and driven plates slip, consuming the overload energy through friction, preventing damage to the clutch and subsequent components.

[0033] 4. Torsional vibration impact attenuation: The damping spring in the clutch can buffer the periodic torsional vibration of the transmission shaft, reducing equipment fatigue loss.

Claims

1. A cold heading machine clutch control system, characterized in that: The invention comprises a fixed seat (1), a rotating shaft (2), a pulley (6), an output gear (4), a clutch (8) and a brake (9); the rotating shaft (2) is rotatably mounted on the fixed seat (1) through a first bearing (3); the output gear (4) is coaxially fixedly connected to the rotating shaft (2) through a first tension sleeve (5); the pulley (6) is rotatably mounted on one side of the fixed seat (1) through a second bearing (7), and one end of the rotating shaft (2) is transmission-connected to the pulley (6) through a clutch (8); the other end of the rotating shaft (2) is connected to a brake (9), and the brake (9) is fixedly mounted on the fixed seat (1); the clutch (8) is a multi-plate pneumatic clutch, and the brake (9) is a pneumatic release spring brake; the clutch (8) and the brake (9) are respectively connected to an air pump through an air pipe; the center hole tube of the clutch (8) and the center hole tube of the brake (9) are respectively coaxially fixedly connected to the rotating shaft (2) through a second tension sleeve (10).

2. The cold heading machine clutch control system according to claim 1, characterized in that: The multi-plate pneumatic clutch (8) comprises a driving disc (11), a driven disc (12) and a piston assembly (13); the driving disc (11) rotates synchronously with the pulley (6), the driven disc (12) rotates synchronously with the rotating shaft (2), and the piston assembly (13) drives the driving disc (11) and the driven disc (12) to engage or disengage through air pressure.

3. The cold heading machine clutch control system according to claim 1, characterized in that: The pneumatic release spring brake (9) comprises a brake housing, a brake shoe and a return spring; the brake shoe is pressed against the outer wall of the central hole tube by the return spring, the brake housing is fixed to the fixing seat (1), and the central hole tube releases the brake when the brake shoe is pushed away from the brake housing by air pressure.

4. The cold heading machine clutch control system according to claim 1, characterized in that: A damping spring is provided between the driving disc (11) and the driven disc (12) of the multi-plate pneumatic clutch (8).

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