Auxiliary brake mechanism of magnetic powder clutch

Abstract

The utility model discloses an auxiliary brake mechanism of a magnetic powder clutch, which comprises an air expansion shaft, a deep groove ball bearing, a brake disc, an air compression disc brake, a power component, the magnetic powder clutch and a high-speed rotating air tap, the high-speed rotating air tap is arranged at the end of the air expansion shaft and is connected with the magnetic powder clutch, and the power component is in transmission connection with the magnetic powder clutch. The magnetic powder clutch is driven by the power assembly to drive the air expansion shaft to rotate so as to wind a pole piece roll, the end of the air expansion shaft is connected with a brake disc through a deep groove ball bearing, the air compression disc brake is located on one side of the brake disc, and the brake disc and the air compression disc brake form a brake structure. And a positive pressure air source air tap is arranged on the air compression disc brake, and when the material belt is broken and suddenly stopped, the brake disc is clamped by introducing a positive pressure air source, so that the air expansion shaft stops winding. When the material belt is broken and suddenly stopped, the air compression disc brake can apply torque in the same direction as the clutch to enable the material belt to stop rotating within set time.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic shafts, in particular to a magnetic powder clutch auxiliary brake mechanism. Background Art

[0002] The inflatable shaft is a special winding and unwinding shaft, that is, the surface of the shaft can bulge out after being inflated by an air gun, and the surface quickly retracts after being deflated. When the surface of the inflatable shaft bulges, the outer periphery of the inflatable shaft presses tightly against the components sleeved on the outer periphery of the inflatable shaft. After being deflated, people can take out the components sleeved on the outer periphery of the inflatable shaft. It is widely used in printing, coating, laminating and paper tape fields.

[0003] When winding the pole piece, the air shaft needs to be used in conjunction with the winder. The air shaft is connected to the clutch for rotation. When winding, the air shaft uses the positive pressure air source to expand the barrel, and the power source is connected to the sprocket to drive the clutch to rotate. The air shaft may break during the winding process. When the pole piece breaks, the pole piece roll is pressed by the belt pressing mechanism and the air shaft is braked suddenly to stop the winding action immediately, avoiding economic losses caused by flying tape and inconvenient tape connection. However, when the winding is braked suddenly, the acceleration torque is too large, which will cause the winding to fail to stop rotating in a short time, causing the pole piece to be torn and broken. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a magnetic powder clutch auxiliary brake mechanism, which can apply a torque in the same direction as the clutch through an air-pressure disc brake to stop the clutch from rotating within a set time when the material belt breaks and stops urgently.

[0005] The technical solution of the utility model is as follows:

[0006] A magnetic powder clutch auxiliary brake mechanism comprises an air shaft, a deep groove ball bearing, a brake disc, an air-compressed disc brake, a power assembly, a magnetic powder clutch and a high-speed rotating air nozzle, wherein the end of the air shaft is provided with a high-speed rotating air nozzle and is connected to the magnetic powder clutch, the power assembly is transmission-connected to the magnetic powder clutch, the magnetic powder clutch is driven by the power assembly to drive the air shaft to rotate to reel in the pole piece material roll, the end of the air shaft is connected with a brake disc via a deep groove ball bearing, the air-compressed disc brake is located on one side of the brake disc, the brake disc and the air-compressed disc brake constitute a brake structure, the air-compressed disc brake is provided with a positive-pressure air source air nozzle, when the material belt breaks and stops suddenly, the brake disc is clamped by the positive-pressure air source to stop reeling the air shaft.

[0007] Furthermore, the power assembly includes a power source, a sprocket and a chain. The power source is connected to the sprocket and drives the magnetic powder clutch to rotate through the chain.

[0008] Furthermore, the power source is an electric motor.

[0009] Furthermore, the brake disc is fixed by a locking nut.

[0010] Furthermore, a first dust cover is arranged outside the deep groove ball bearing.

[0011] Furthermore, the pneumatic disc brake is fixed by a mounting base.

[0012] Furthermore, a second dust cover is arranged outside the pneumatic disc brake.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a magnetic powder clutch auxiliary brake mechanism, which can apply a torque in the same direction as the clutch through an air-pressure disc brake to stop the rotation within a set time when the material belt breaks and the emergency stop occurs; the magnetic powder clutch auxiliary brake mechanism has a compact structure, simple and reliable operation, and occupies a small space, which is of great help to the lightweight and miniaturization of the entire equipment, can save costs, and reduce the number of equipment parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the structure of a magnetic powder clutch auxiliary brake mechanism provided by the utility model;

[0016] Figure 2 It is a structural schematic diagram of the brake structure of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0019] Example

[0020] See also Figure 1 , Figure 2The present embodiment provides a magnetic powder clutch auxiliary brake mechanism, comprising an inflatable shaft 1, a deep groove ball bearing, a brake disc 2, an air-compressed disc brake 3, a power assembly 4, a magnetic powder clutch 5 and a high-speed rotating air nozzle 6. A high-speed rotating air nozzle 6 is provided at the end of the inflatable shaft 1 and is connected to the magnetic powder clutch 5. The power assembly 4 is in transmission connection with the magnetic powder clutch 5. The magnetic powder clutch 5 is driven by the power assembly 4 to drive the inflatable shaft 1 to rotate to reel in the pole piece material roll. A brake disc 2 is connected to the end of the inflatable shaft 1 through a deep groove ball bearing. The brake disc 2 is fixed by a locking nut 7. The air-compressed disc brake 3 is located on one side of the brake disc 2 and is fixed by a mounting base 8. The brake disc 2 and the air-compressed disc brake 3 constitute a brake structure. A positive-pressure air source air nozzle 31 is provided on the air-compressed disc brake 3. When the material belt breaks and stops suddenly, the brake disc 2 is clamped by a positive-pressure air source to stop the inflatable shaft 1 from reeling.

[0021] The power assembly 4 includes a power source, a sprocket and a chain. The power source is a motor. The motor is connected to the sprocket and drives the magnetic powder clutch 5 to rotate through the chain.

[0022] When the pole piece is wound and the tape is broken, the tape pressing mechanism immediately presses the pole piece and the winding mechanism to stop rotating to prevent the material tape from flying and tearing. When the outer diameter of the material roll is large, the acceleration torque value generated by the sudden brake is large, which causes the winding mechanism to not stop rotating immediately. Because the rated torque value of the magnetic powder clutch 5 is less than the acceleration torque, it takes a certain amount of time to stop. In this case, the air shaft 1 is still in the winding state and the tension generated is greater than the pole piece tension, thereby breaking the pole piece. This embodiment takes lightweight, miniaturization, and cost reduction as design criteria, and adds an auxiliary brake mechanism within a limited mechanical design space to stop the air shaft 1 from rotating within a set time. When the motor stops rotating by sudden brake, the magnetic powder clutch 5 drives the air shaft 1 to continue rotating. At this time, the air disc brake 3 passes the positive pressure air source to the brake pads at both ends to clamp the brake disc 2. The torque generated is in the same direction as the clutch torque. The sum of the torque values ​​of the two is greater than the torque value of the air shaft 1, causing it to stop winding immediately.

[0023] Preferably, the material of the brake disc 2 is S136H, with a surface roughness of 12.5. This material has low processing cost, strong rigidity, light weight, and will not rust due to brake wear, avoiding the rust phenomenon of conventional carbon steel materials due to wear of surface rust-proof materials. The brake structure is also equipped with a dust cover. The first dust cover 9 set outside the deep groove ball bearing is used to prevent iron filings from entering the bearing and reducing the bearing life. The second dust cover 10 set outside the pneumatic disc brake 3 is used to gather the dust generated during emergency braking to prevent the dust from splashing due to centrifugal force and contaminating other mechanisms when the emergency braking speed is too fast.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic powder clutch auxiliary brake mechanism, characterized in that: It includes an inflatable shaft, a deep groove ball bearing, a brake disc, an air-compressed disc brake, a power assembly, a magnetic powder clutch and a high-speed rotating air nozzle. The end of the inflatable shaft is provided with a high-speed rotating air nozzle and is connected to the magnetic powder clutch. The power assembly is in transmission connection with the magnetic powder clutch. The magnetic powder clutch drives the inflatable shaft to rotate through the power assembly to reel in the pole piece material roll. The end of the inflatable shaft is connected with a brake disc through a deep groove ball bearing. The air-compressed disc brake is located on one side of the brake disc. The brake disc and the air-compressed disc brake constitute a brake structure. The air-compressed disc brake is provided with a positive-pressure air source air nozzle. When the material belt breaks and stops suddenly, the brake disc is clamped by passing the positive-pressure air source to stop the reeling of the inflatable shaft.

2. The magnetic powder clutch auxiliary brake mechanism according to claim 1, characterized in that: The power assembly comprises a power source, a sprocket and a chain. The power source is connected to the sprocket and drives the magnetic powder clutch to rotate through the chain.

3. A magnetic powder clutch auxiliary brake mechanism according to claim 2, characterized in that: The power source is a motor.

4. The magnetic powder clutch auxiliary brake mechanism according to claim 1, characterized in that: The brake disc is fixed by a locking nut.

5. The magnetic powder clutch auxiliary brake mechanism according to claim 1, characterized in that: A first dust cover is arranged outside the deep groove ball bearing.

6. The magnetic powder clutch auxiliary brake mechanism according to claim 1, characterized in that: The pneumatic disc brake is fixed via a mounting base.

7. The magnetic powder clutch auxiliary brake mechanism according to claim 1, characterized in that: A second dust cover is arranged outside the pneumatic disc brake.

Images