Grinding device for drum brake

Abstract

The invention discloses a polishing device for a drum brake, and relates to the technical field of brake machining, and the polishing device is characterized in that the polishing device comprises a workbench, two sets of machining lines are arranged on the workbench, each machining line comprises an input mechanism, a conveying mechanism and an output mechanism which are sequentially arranged in the brake drum machining advancing direction, and the input mechanisms are used for inputting brake drums; the conveying mechanism is used for conveying the brake drums from the input mechanism to the output mechanism, the output mechanism is used for outputting the brake drums, and a grinding mechanism is arranged on the conveying mechanism. The grinding device of the drum brake can grind the brake drum to meet the requirements for accurate size and surface smoothness, the whole operation is automatically carried out, the reliability is high, the machining quality of the brake drum is guaranteed, the labor amount of workers is reduced, the labor intensity of the workers is reduced, the grinding efficiency of the brake drum is greatly improved, and the grinding efficiency of the brake drum is improved. And the requirement for large-batch machining of the brake drums can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of brake processing, in particular to a polishing device for drum brake. BACKGROUND

[0002] The drum brake is a common automobile braking system. Its structure mainly includes a brake drum, a brake shoe, a brake bottom plate, a brake cylinder, a return spring, a support pin, an adjuster, a brake master cylinder, a brake pipeline, a brake pedal, a vacuum booster and a parking brake device. The working principle of the drum brake is: when the driver steps on the brake pedal, the brake master cylinder generates hydraulic pressure, which is transmitted to the brake cylinder through the brake pipeline. The piston in the brake cylinder is pushed outward under the action of the hydraulic pressure, so that the brake shoe contacts the brake drum, friction is generated, the wheel is decelerated or stopped, and when the driver releases the brake pedal, the hydraulic pressure in the brake master cylinder disappears, and the return spring of the brake shoe pulls the brake shoe back to release the brake.

[0003] The brake drum is the core component of the drum brake, which is a rotating component connected with the wheel. When the brake works, the brake drum will contact the brake shoe to generate friction and achieve braking. Since the brake drum is mostly produced by casting, it needs to be polished after casting to remove surface burrs, scratches and other casting defects. The existing technology usually uses a grinding wheel or a grinding belt to polish the end face and side face of the brake drum to achieve accurate size and surface finish requirements. However, since the number of brake drums to be processed is usually large, manual polishing is low in efficiency, and errors are prone to occur in the process of feeding, polishing and discharging, thus there is a great unreliability, which not only increases the labor of workers and improves the labor intensity of workers, but also is very disorderly and does not meet the needs of mass production. SUMMARY

[0004] The purpose of the present application is to provide a polishing device for drum brake to solve the above problems.

[0005] The present application achieves the above-mentioned purpose through the following technical solutions: a polishing device for drum brake, comprising a workbench, two groups of processing lines are arranged on the workbench, the processing line comprises an input mechanism, a conveying mechanism and an output mechanism arranged in sequence along the processing direction of the brake drum; The input mechanism is used for inputting the brake drum; The conveying mechanism is used for conveying the brake drum from the input mechanism to the output mechanism; The output mechanism is used for outputting the brake drum; The conveying mechanism is provided with a grinding mechanism, which includes an end face grinding mechanism for grinding the end face of the brake drum and a side face grinding mechanism for grinding the side face of the brake drum. The end face grinding mechanism and the side face grinding mechanism each include a sanding belt and a driving mechanism for driving the sanding belt to operate. The driving mechanism includes two driving motors, and the output ends of the driving motors are connected to grinding wheels. The sanding belt is connected between the two grinding wheels. A plurality of tensioning rollers for supporting the sanding belt are rotatably connected to the workbench. The conveying mechanism includes a bracket fixedly mounted on the workbench, a conveying chain is provided on the bracket, and feeding clamp arms are provided at both ends of the conveying chain. The feeding clamp arms include a clamp and a translation mechanism for driving the clamp to translate along the Y-axis and Z-axis directions. The clamp includes a loading claw and a unloading claw parallel to each other. The loading claw is used to grab the brake drum from the input mechanism and release the brake drum on the output mechanism. The unloading claw is used to grab or release the brake drum from the conveying chain. A first cylinder is provided between the loading claw and the unloading claw, and the first cylinder is used to drive the loading claw and the unloading claw to move closer to or away from each other. The first cylinder is fixedly mounted on the loading claw, and a first push rod is provided on the first cylinder, and the first push rod is connected to the unloading claw.

[0006] As a further configuration of the present invention, the translation mechanism includes a sliding seat slidably connected to the bracket and a second cylinder connected to the sliding seat, the second cylinder is arranged along the direction of the Z axis, the second cylinder is provided with a second push rod, the second push rod is connected to the sliding seat, the sliding seat is provided with a third cylinder, the third cylinder is arranged along the direction of the Z axis, the third cylinder is provided with a third push rod, and the third push rod is connected to the clamp.

[0007] As a further configuration of the present invention, the loading air claw and the unloading air claw both include a clamping claw cylinder, and two clamping claws arranged opposite to each other are provided on the output end of the clamping claw cylinder, and the clamping claw cylinder is used to drive the two clamping claws to close or open.

[0008] As a further configuration of the present invention, the conveying chain includes several supporting sprockets rotatably connected to the workbench, the supporting sprockets are used to support the brake drum, and chains are meshed and connected between the supporting sprockets. A rotating motor is provided on the workbench, and a driving sprocket is connected to the output end of the rotating motor, and the driving sprocket is meshed and connected to the chain.

[0009] As a further configuration of the present invention, the input mechanism and the output mechanism both include a frame, an active roller and a driven roller are rotatably connected to the frame, a conveyor belt is connected between the active roller and the driven roller, and a power mechanism for driving the active roller to rotate is provided on the frame.

[0010] As a further configuration of the present invention, the power mechanism includes a power motor, and the power motor is connected to the active roller through a transmission assembly.

[0011] As a further configuration of the present invention, the transmission assembly includes a driving pulley and a driven pulley, the driving pulley is fixedly connected to the output end of the power motor, the driven pulley is connected to the driving roller, and a belt is connected between the driving pulley and the driven pulley.

[0012] In summary, the present invention has the following beneficial effects: The present invention performs processing simultaneously through two sets of processing lines. The brake drum to be processed is first placed in order on the input mechanism, and the input mechanism can continuously input the brake drum. When the brake drum moves to the end of the input mechanism, the transmission mechanism can transmit the brake drum from the input mechanism to the output mechanism, and finally output it through the output mechanism, thereby realizing automatic transmission of the brake drum, eliminating the tedious operation of manual transfer, and the operation is more orderly. In the process of the brake drum being transmitted through the transmission mechanism, the drive motor can drive the grinding wheel to rotate, thereby driving the grinding wheel to operate continuously, and the end face and side of the brake drum are continuously polished by the end face grinding mechanism and the side grinding mechanism respectively to achieve precise size and surface finish requirements. The entire operation is carried out automatically with high reliability, ensuring the processing quality of the brake drum, not only reducing the labor workload and labor intensity of the workers, but also greatly improving the grinding efficiency of the brake drum, and can be suitable for the needs of large-scale processing of brake drums. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle; Figure 3 for Figure 1 Schematic diagram of the enlarged structure at B in the middle; Figure 4 The structure of the present invention is schematically shown Figure 2 ; Figure 5 for Figure 4 Schematic diagram of the enlarged structure at C in the middle; Figure 6 The structure of the present invention is schematically shown Figure 3 .

[0014] Figure numerals: 1. workbench; 2. abrasive belt; 3. drive motor; 4. grinding wheel; 5. tensioning roller; 6. bracket; 7. loading claw; 8. unloading claw; 9. first cylinder; 10. first push rod; 11. sliding seat; 12. second cylinder; 13. second push rod; 14. third cylinder; 15. third push rod; 16. clamping cylinder; 17. clamping claw; 18. supporting sprocket; 19. chain; 20. rotating motor; 21. driving sprocket; 22. frame; 23. active roller; 24. driven roller; 25. conveyor belt; 26. power motor; 27. active pulley; 28. driven pulley; 29. ​​belt. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1 、 Figure 3 、 Figure 6As shown, a grinding device for a drum brake comprises a workbench 1, on which two sets of processing lines are arranged, the processing lines comprising an input mechanism, a transmission mechanism and an output mechanism arranged in sequence along the processing direction of the brake drum, the input mechanism is used to input the brake drum, the transmission mechanism is used to transmit the brake drum from the input mechanism to the output mechanism, the output mechanism is used to output the brake drum, a grinding mechanism is arranged on the transmission mechanism, the grinding mechanism comprises an end face grinding mechanism for grinding the end face of the brake drum and a side grinding mechanism for grinding the side face of the brake drum, the end face grinding mechanism and the side grinding mechanism both comprise a sanding belt 2 and a driving mechanism for driving the sanding belt 2 to operate, the driving mechanism comprises two driving motors 3, and a grinding wheel 4 is connected to the output end of the driving motor 3, the sanding belt 2 is connected between the two grinding wheels 4, and a number of tensioning rollers 5 for supporting the sanding belt 2 are rotatably connected to the workbench 1, so that when the device is in use, the two sets of processing lines can be used simultaneously The processing is carried out at the same time. First, the brake drum to be processed is placed on the input mechanism in order, and the input mechanism can continuously input the brake drum. When the brake drum moves to the end of the input mechanism, the transmission mechanism can transmit the brake drum from the input mechanism to the output mechanism, and finally output it through the output mechanism, thereby realizing the automatic transmission of the brake drum, eliminating the tedious operation of manual transfer, and the operation is more orderly. In the process of the brake drum being transmitted through the transmission mechanism, the drive motor 3 can drive the grinding wheel 4 to rotate, thereby driving the grinding wheel to operate continuously, and continuously grinding the end face and side face of the brake drum respectively through the end face grinding mechanism and the side grinding mechanism to achieve precise size and surface finish requirements. The entire operation is carried out automatically with high reliability, which ensures the processing quality of the brake drum, reduces the labor workload and labor intensity of the workers, and greatly improves the grinding efficiency of the brake drum, which can be suitable for the needs of large-scale processing of brake drums.

[0017] See also Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6As shown, the conveying mechanism includes a support 6 fixedly installed on the workbench 1, a conveying chain is arranged on the support 6, and feeding clamp arms are arranged at both ends of the conveying chain, the feeding clamp arms include clamps and a translation mechanism for driving the clamps to translate along the directions of Y axis and Z axis, the clamps include upper feeding air claws 7 and lower feeding air claws 8 which are parallel to each other, the upper feeding air claws 7 are used for grabbing the brake drum from the input mechanism and releasing the brake drum on the output mechanism, the lower feeding air claws 8 are used for grabbing or releasing the brake drum from the conveying chain, a first air cylinder 9 is arranged between the upper feeding air claws 7 and the lower feeding air claws 8, the first air cylinder 9 is used for driving the upper feeding air claws 7 and the lower feeding air claws 8 to move close to or away from each other, the first air cylinder 9 is fixedly installed on the upper feeding air claws 7, a first push rod 10 is arranged on the first air cylinder 9, and the first push rod 10 is connected with the lower feeding air claws 8, so that when the brake drum is input through the input mechanism and moves to the end of the input mechanism, the clamp can be driven to translate along the direction of Y axis by the translation mechanism, so that the clamp moves above the brake drum, then the clamp is driven to translate downward along the direction of Z axis by the translation mechanism, until the brake drum enters the inside of the upper feeding air claws 7, then the upper feeding air claws 7 can grab the brake drum from the input mechanism, then the clamp is driven to translate upward along the direction of Z axis by the translation mechanism, so that the brake drum rises with it, then the first air cylinder 9 is started, so that the first push rod 10 is retracted, so that the lower feeding air claws 8 move close to the upper feeding air claws 7, so as to move the brake drum close to the lower feeding air claws 8, then the lower feeding air claws 8 can grab the brake drum, then the first push rod 10 is driven to elongate, so that the lower feeding air claws 8 move above the conveying belt 25, then the lower feeding air claws 8 can release the brake drum, so that the brake drum is arranged on the conveying chain, after being conveyed from the first end to the end by the conveying chain, the brake drum on the conveying chain can be grabbed by the lower feeding air claws 8, then the brake drum is grabbed by the upper feeding air claws 7 and arranged on the output air cylinder, and finally output by the output mechanism, so that the operation is convenient and the efficiency is high.The conveying chain comprises a plurality of supporting sprockets 18 rotatably connected to the workbench 1 and used for supporting the brake drum, and a chain 19 rotatably connected between the supporting sprockets 18, a rotary motor 20 is arranged on the workbench 1, and a driving sprocket 21 is rotatably connected to an output end of the rotary motor 20 and rotatably connected with the chain 19, so that after the brake drum is placed on the supporting sprockets 18, the rotary motor 20 is driven to rotate the driving sprocket 21, and the conveying chain is driven to rotate, so that the brake drum is conveyed from the first end to the last end of the conveying chain, and the efficiency is high.

[0018] Please refer to Figure 1 、 Figure 3 、 Figure 4 It is shown that the input mechanism and the output mechanism both comprise a rack 22, a driving roller 23 and a driven roller 24 are rotatably connected to the rack 22, and a conveying belt 25 is rotatably connected between the driving roller 23 and the driven roller 24, and a power mechanism for driving the driving roller 23 to rotate is arranged on the rack 22, so that the driving roller 23 is driven to rotate by the power mechanism, and the driven roller 24 is driven to rotate by the conveying belt 25, and the conveying belt 25 is driven to rotate by the cooperation of the driving roller 23 and the driven roller 24, so that the transmission of the brake drum is realized, the power mechanism comprises a power motor 26, the power motor 26 is connected to the driving roller 23 through a transmission assembly, so that the driving roller 23 is driven to rotate by the transmission assembly by starting the power motor 26, so as to drive the conveying belt 25 to move, wherein the transmission assembly comprises a driving pulley 27 and a driven pulley 28, the driving pulley 27 is fixedly connected to an output end of the power motor 26, the driven pulley 28 is connected to the driving roller 23, and a belt 29 is connected between the driving pulley 27 and the driven pulley 28, so that the driving pulley 27 is driven to rotate by starting the power motor 26, and the driven pulley 28 is driven to rotate by the belt 29, so as to drive the driving roller 23 to rotate.

[0019] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiment, and any technical scheme falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and decorations without departing from the principle of the present application shall also be considered as the protection scope of the present application.

Claims

1. A grinding device for a drum brake, comprising a workbench (1), characterized in that: Two sets of processing lines are arranged on the workbench (1), and the processing lines include an input mechanism, a transmission mechanism and an output mechanism arranged in sequence along the processing direction of the brake drum; The input mechanism is used to input the brake drum; The transmission mechanism is used to transmit the brake drum from the input mechanism to the output mechanism; The output mechanism is used to output the brake drum; The transmission mechanism is provided with a grinding mechanism, the grinding mechanism comprising an end face grinding mechanism for grinding the end face of the brake drum and a side face grinding mechanism for grinding the side face of the brake drum, the end face grinding mechanism and the side face grinding mechanism both comprising a sanding belt (2) and a driving mechanism for driving the sanding belt (2) to operate, the driving mechanism comprising two driving motors (3), the output ends of the driving motors (3) are both connected to a grinding wheel (4), the sanding belt (2) is connected between the two grinding wheels (4), and a plurality of tensioning rollers (5) for supporting the sanding belt (2) are rotatably connected to the workbench (1); The conveying mechanism includes a bracket (6) fixedly mounted on the workbench (1), a conveying chain is provided on the bracket (6), and feeding clamp arms are provided at both ends of the conveying chain. The feeding clamp arms include a clamp and a translation mechanism for driving the clamp to translate along the Y-axis and the Z-axis. The clamp includes a loading claw (7) and a unloading claw (8) that are parallel to each other. The loading claw (7) is used to grab the brake drum from the input mechanism and release the brake drum on the output mechanism. The unloading claw (8) is used to grab or release the brake drum from the conveying chain. A first cylinder (9) is provided between the loading claw (7) and the unloading claw (8). The first cylinder (9) is used to drive the loading claw (7) and the unloading claw (8) to move closer to or farther from each other. The first cylinder (9) is fixedly mounted on the loading claw (7). A first push rod (10) is provided on the first cylinder (9), and the first push rod (10) is connected to the unloading claw (8).

2. A drum brake grinding device according to claim 1, characterized in that: The translation mechanism includes a sliding seat (11) slidably connected to the bracket (6) and a second cylinder (12) connected to the sliding seat (11), the second cylinder (12) is arranged along the direction of the Z axis, the second cylinder (12) is provided with a second push rod (13), the second push rod (13) is connected to the sliding seat (11), the sliding seat (11) is provided with a third cylinder (14), the third cylinder (14) is arranged along the direction of the Z axis, the third cylinder (14) is provided with a third push rod (15), and the third push rod (15) is connected to the clamp.

3. The grinding device for a drum brake according to claim 1, characterized in that: The loading air claw (7) and the unloading air claw (8) both include a clamping claw cylinder (16), and two clamping claws (17) arranged opposite to each other are provided at the output end of the clamping claw cylinder (16). The clamping claw cylinder (16) is used to drive the two clamping claws (17) to close or open.

4. The grinding device for a drum brake according to claim 1, characterized in that: The conveying chain includes a plurality of supporting sprockets (18) rotatably connected to the workbench (1), the supporting sprockets (18) are used to support the brake drum, and chains (19) are meshedly connected between the supporting sprockets (18). A rotating motor (20) is provided on the workbench (1), and a driving sprocket (21) is connected to the output end of the rotating motor (20), and the driving sprocket (21) is meshedly connected to the chain (19).

5. The grinding device for a drum brake according to claim 1, characterized in that: The input mechanism and the output mechanism both comprise a frame (22), a driving roller (23) and a driven roller (24) being rotatably connected to the frame (22), a conveyor belt (25) being connected between the driving roller (23) and the driven roller (24), and a power mechanism for driving the driving roller (23) to rotate being provided on the frame (22).

6. The grinding device for a drum brake according to claim 5, characterized in that: The power mechanism comprises a power motor (26), and the power motor (26) is connected to the active roller (23) via a transmission assembly.

7. A drum brake grinding device according to claim 6, characterized in that: The transmission assembly comprises a driving pulley (27) and a driven pulley (28), wherein the driving pulley (27) is fixedly connected to the output end of the power motor (26), the driven pulley (28) is connected to the driving roller (23), and a belt (29) is connected between the driving pulley (27) and the driven pulley (28).

Images