Sand blasting derusting device for automobile brake disc machining

Abstract

The utility model relates to the technical field of sand blasting derusting, in particular to a sand blasting derusting device for automobile brake disc machining, which comprises a feeding assembly, a spraying head, a rotary clamping mechanism and a recycling module. The feeding assembly conveys grinding materials through a feeding screw, the distance between the outlet end face of an injection head and the surface of the brake disc is adjustable, the clamping mechanism is rotated to enable the brake disc to rotate around the axis, and the recycling module separates the grinding materials and impurities through an annular material collecting groove and a filter screen. Preferably, an air flow auxiliary assembly is further included to form an air flow barrier, and grinding material splashing is avoided. Through the structural design, comprehensive treatment on the surface of the brake disc is achieved, the working efficiency and the operation convenience are improved, meanwhile, the adaptability of workpieces in complex shapes is enhanced, and an efficient and accurate solution is provided for automobile brake disc machining.

Description

Technical Field

[0001] This utility model belongs to the field of machining and surface treatment technology, specifically a sandblasting and rust removal device for processing automotive brake discs. Background Technology

[0002] In the manufacturing process of automotive parts, rust removal is often required for the surface of brake discs. Taking gray cast iron brake discs as an example, their surfaces typically develop an oxide layer or rust due to long-term use or storage, affecting subsequent processing and performance. To improve the surface quality of brake discs and enhance coating adhesion, sandblasting is a common pretreatment process. By using a sandblasting device to impact the surface of the brake disc with high-speed abrasive particles, the oxide layer and rust can be effectively removed, while simultaneously improving surface roughness.

[0003] Currently, a method for laser cladding on the surface of gray cast iron brake discs, published in CN114717549B on February 18, 2025, directly forms a metallurgically bonded cladding layer on the brake disc surface using laser cladding technology, eliminating the need for pretreatment such as sandblasting, preheating, and pre-applied substrate layers. While this method can significantly reduce energy consumption and improve surface properties, its main focus is on the laser cladding process itself, neglecting the crucial step of sandblasting for rust removal. Therefore, in scenarios requiring high-precision surface treatment, the applicability of this method is somewhat limited, and traditional sandblasting equipment is still necessary for pretreatment.

[0004] However, existing sandblasting and rust removal equipment has room for improvement in practical applications, such as in terms of work efficiency, ease of operation, and adaptability to complex-shaped workpieces. Therefore, there is a need in this field for a more efficient and precise sandblasting and rust removal device to meet diverse processing requirements. Utility Model Content

[0005] To address the aforementioned problems and needs, this disclosure proposes a novel technical solution that overcomes the shortcomings of existing sandblasting and rust removal devices in terms of working efficiency, ease of operation, and adaptability to complex-shaped workpieces by employing the following technical features, while also bringing other technical benefits. This utility model provides a sandblasting and rust removal device for processing automotive brake discs, comprising: a support frame composed of upper and lower plates; a feeding assembly having a guide channel extending along the abrasive conveying direction; a spray head disposed at the end of the guide channel and facing the brake disc surface; a rotating clamping mechanism for fixing the brake disc and enabling it to rotate around its own axis; and a recovery module located below the brake disc and arranged around its outer periphery for collecting the blasted abrasive and impurities; and an airflow auxiliary assembly.

[0006] Preferably, the sandblasting and rust removal device for processing automotive brake discs includes a support frame. The upper plate of the support frame is used to install the feeding assembly and the spray head, and the lower plate is used to install the recycling module. The rotating clamping mechanism is fixed at the center position of the support frame through a bearing seat, and the drive motor of the rotating clamping mechanism is connected to the brake disc through a gear transmission system. The drive motor is installed on the lower plate of the support frame. The first bevel gear of the gear transmission system is connected to the output shaft of the drive motor, the second bevel gear meshes with the first bevel gear, and the shaft of the second bevel gear meshes with the inner ring of the brake disc.

[0007] Preferably, the recycling module includes an annular collection trough and a filter screen. The annular collection trough is arranged around the outer periphery of the brake disc, and its bottom is inclined to guide the abrasive and impurities to flow to one side. The filter screen is located at the outlet of the annular collection trough and is used to separate the abrasive and impurities. A vibrator is provided above the filter screen to cause the filter screen to vibrate and accelerate the material separation.

[0008] Preferably, the sandblasting and rust removal device for automotive brake disc processing further includes an airflow auxiliary component, which comprises an air pump, an air pipe, and multiple nozzles. The air pump is mounted on the lower plate of the support frame, one end of the air pipe is connected to the air pump, and the other end is connected to the multiple nozzles through a branch pipe. The multiple nozzles are evenly distributed on the inner wall of the annular collection trough, and the outlet direction of the nozzles faces the surface of the brake disc, forming an airflow barrier around the brake disc to prevent abrasive material from splashing outside the device.

[0009] Preferably, the feeding assembly further includes a storage bin and a feeding screw. The storage bin is positioned above the upper plate of the support frame, and has a discharge port at its bottom, which communicates with the inlet of the guide channel. The feeding screw is located inside the guide channel, with one end connected to the output of a feeding motor, which is mounted on the outer wall of the storage bin. The blades of the feeding screw are clearance-fitted with the inner wall of the guide channel, and the rotation of the feeding screw pushes the abrasive material in the storage bin to the end of the guide channel.

[0010] Preferably, the rotating clamping mechanism further includes limiting discs, which are disposed on both sides of the brake disc and connected to the support frame via slide rails. The slide rails extend horizontally, and the limiting discs are fixed to the slide rails by locking bolts to adjust the spacing between the limiting discs, thereby accommodating brake discs of different diameters. An elastic washer is provided on the inner side of the limiting disc, which contacts the outer periphery of the brake disc to prevent displacement of the brake disc during rotation.

[0011] This utility model provides a sandblasting and rust removal device for automotive brake disc processing. Through a rotating clamping mechanism, the brake disc rotates around its own axis. Combined with the adjustable distance design of the spray head, it achieves comprehensive coverage of the brake disc surface. Simultaneously, the annular collection trough and filter design of the recovery module effectively separate abrasive particles from impurities, reducing resource waste. The airflow barrier formed by the airflow auxiliary component prevents abrasive splashing, improving the safety and cleanliness of the working environment. Furthermore, the feeding screw design of the feeding component ensures a continuous supply of abrasive particles, improving work efficiency. By adjusting the distance between the spray head and the brake disc surface, as well as the speed of the drive motor, it can be adapted to brake discs of different specifications, enhancing the applicability of the device.

[0012] This utility model, through the design and combination of the above-mentioned specific structures, solves the limitations of existing sandblasting and rust removal devices in processing complex-shaped workpieces, significantly improves work efficiency and ease of operation, and reduces the labor intensity of operators, providing a more efficient and precise solution for the automotive brake disc processing field. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a sandblasting and rust removal device for processing automotive brake discs according to this utility model.

[0014] Figure 2 This is a partial schematic diagram of the rotating clamping mechanism of a sandblasting and rust removal device for processing automotive brake discs according to this utility model;

[0015] Figure 3 This is a cross-sectional view of the rotating clamping mechanism of a sandblasting and rust removal device for processing automotive brake discs according to this utility model.

[0016] Figure 4 This is a schematic diagram of the feeding component of a sandblasting and rust removal device for processing automotive brake discs according to this utility model;

[0017] Figure 5 This is a schematic diagram of the annular material collection groove structure of a sandblasting and rust removal device for processing automotive brake discs according to this utility model;

[0018] In the picture:

[0019] 1. Feeding assembly; 11. Storage bin; 12. Feeding screw; 13. Feeding motor; 2. Spray head; 3. Rotary clamping mechanism; 31. Limiting plate; 32. Slide rail; 33. Drive motor; 34. Bevel gear one; 35. Bevel gear two; 4. Recycling module; 5. Air pump; 6. Annular collection trough; 7. Filter screen; 8. Nozzle; 9. Airflow auxiliary assembly; 10. Support frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] This utility model provides a sandblasting and rust removal device for processing automotive brake discs, the overall structure of which is as follows: Figure 1 As shown, the assembly includes a feeding component 1, a spray head 2, a rotating clamping mechanism 3, a recovery module 4, a support frame 10, an airflow auxiliary component 9, and other auxiliary parts. These components, through their rational design and layout, achieve highly efficient sandblasting and rust removal of the brake disc surface, while simultaneously solving the problems of abrasive waste, inconvenient operation, and insufficient adaptability to complex-shaped workpieces in existing technologies.

[0024] Example 1

[0025] It should be noted that the support frame 10 consists of two layers of plates. The upper plate is used to install the feeding assembly 1 and the spray head 2, while the lower plate is used to install the recycling module 4 and the drive motor 33, etc. The rotating clamping mechanism 3 is fixed to the center of the support frame 10 by bearing seats. Its specific structure includes a limiting plate 31, a slide rail 32, and an elastic pad. The limiting plate 31 is located on both sides of the brake disc and is connected to the support frame 10 through the slide rail 32, which extends horizontally. The limiting plate 31 is fixed to the slide rail 32 by locking bolts to adjust the spacing, thereby adapting to brake discs of different diameters. An elastic pad is provided on the inner side of the limiting plate 31. The elastic pad contacts the outer periphery of the brake disc to prevent... During rotation, the brake disc shifts. The drive motor 33 of the rotating clamping mechanism 3 is mounted on the lower plate of the support frame 10. The output shaft of the drive motor 33 is connected to the brake disc via a gear transmission system. Bevel gear 1 34 is connected to the output shaft of the drive motor, and bevel gear 2 35 meshes with bevel gear 1 34. The shaft of bevel gear 2 35 meshes with the inner ring of the brake disc, thereby achieving stable rotation of the brake disc around its own axis. When the inner circle of the brake disc is connected to the shaft of bevel gear 2 35, the user slides the limiting disc 31 along the slide rail 32 until the elastic washer contacts the brake disc at the appropriate position. Then, by tightening the bolts on the limiting disc 31, the position between the limiting disc 31 and the slide rail 32 is fixed and locked. When the brake disc is being rotated for rust removal, the user starts the drive motor 33. The output end of the drive motor 33 drives bevel gear 1 34 to rotate, bevel gear 1 34 meshes with bevel gear 2 35 to rotate, and the shaft of bevel gear 2 35 meshes with the inner ring of the brake disc, driving the brake disc to rotate for rust removal.

[0026] Example 2

[0027] In this embodiment, the feeding assembly 1 is disposed above the upper plate of the support frame 10, and includes a storage tank 11, a feeding screw 12, and a guide channel. The storage tank 11 is located at the top, and its bottom is provided with a discharge port, which is connected to the inlet of the guide channel. The feeding screw 12 is disposed inside the guide channel, and one end of the feeding screw 12 is connected to the output end of the feeding motor 13. The feeding motor 13 is mounted on the outer wall of the storage tank 11. The blades of the feeding screw 12 are in clearance fit with the inner wall of the guide channel. When the feeding motor 13 is started, the feeding screw 12 rotates and pushes the abrasive in the storage tank to the end of the guide channel. The guide channel extends along the abrasive conveying direction, and its end is connected to the spray head 2. The spray head 2 is positioned facing the surface of the brake disc. When sandblasting is required to remove rust, the user starts the feeding motor 13. Fine sand enters the guide channel from the bottom outlet of the storage box 11. The output end of the feeding motor 13 drives the feeding screw 12 to rotate. The rotation of the feeding screw 12 pushes the abrasive fine sand to the spray head 2, and then the spray head 2 sprays it onto the surface of the brake disc to remove rust.

[0028] Example 3

[0029] In addition, the recycling module 4 is located below the brake disc and surrounds its outer periphery. Its main structure includes an annular collection trough 6, a filter screen 7, and a vibrator. The annular collection trough 6 is arranged around the outer periphery of the brake disc, and its bottom is inclined to guide abrasive and impurities to flow to one side. The filter screen 7 is located at the outlet of the annular collection trough 6 to separate abrasive and impurities. A vibrator is located above the filter screen 7 to make the filter screen 7 vibrate to accelerate material separation. This design effectively avoids the mixing of abrasive and impurities, reduces resource waste, and improves recycling efficiency. The airflow auxiliary component 9 is located on the inner wall of the annular collection trough 6. The airflow auxiliary component 9 includes an air pump 5, an air pipe, and multiple nozzles 8. The air pump 5 is installed on the lower plate of the support frame 10. One end of the air pipe is connected to the air pump 5, and the other end is connected to multiple nozzles 8 through a branch pipe. Multiple nozzles 8 are evenly distributed on the inner wall of the annular collection trough 6, and the outlet direction of the nozzles 8 faces the surface of the brake disc, forming an airflow barrier around the brake disc. This airflow barrier effectively prevents abrasive particles from splashing outside the device, improving the safety and cleanliness of the working environment. When the brake disc is being derusted, the air pump 5 is started. The airflow blown by the air pump 5 is connected to the branch pipe through the air pipe, and then transmitted to multiple nozzles 8 through the branch pipe. Finally, the airflow is sprayed out from multiple nozzles 8 to form an airflow barrier, preventing the generated abrasive particles and impurities from splashing outside the device. The abrasive particles and impurities then enter the annular collection trough 6. The inclined bottom plate of the annular collection trough 6 moves the abrasive particles and impurities to the side close to the filter screen 7. The vibrator is started, and the abrasive particles and impurities on the filter screen 7 are vibrated by the vibrator to accelerate the separation of materials and fall into the collection box.

[0030] In actual operation, the brake disc to be processed is first placed on the rotating clamping mechanism 3, and the spacing of the limiting discs 31 is adjusted to ensure close contact with the outer circumference of the brake disc. Then, the drive motor 33 is started, driving the brake disc to rotate around its own axis via a gear transmission system. Simultaneously, the feeding motor 13 in the feeding assembly 1 is started, and the feeding screw 12 pushes the abrasive from the storage tank 11 to the end of the guide channel and sprays it onto the surface of the brake disc through the spray nozzle 2. The sprayed abrasive and impurities fall into the annular collection trough 6 of the recycling module 4. After separation by the filter screen 7, the abrasive is collected and reused, while the impurities are discharged. The airflow barrier formed by the airflow auxiliary assembly 9 effectively blocks abrasive splashing, ensuring the safety and cleanliness of the working environment.

[0031] Through the above structural design and operating principle, this utility model achieves comprehensive coverage of the brake disc surface, significantly improving work efficiency and ease of operation, while reducing the labor intensity of operators, providing a more efficient and precise solution for the automotive brake disc processing field.

[0032] To enable those skilled in the art to fully understand and implement this utility model, the operating principle and implementation steps of this utility model are further explained below in conjunction with specific application scenarios.

[0033] In actual operation, the brake disc to be processed is first placed on the rotating clamping mechanism 3. The spacing of the limiting discs 31 is adjusted by the slide rail 32 to ensure close contact with the outer circumference of the brake disc, and the elastic shims provide appropriate clamping force to prevent the brake disc from shifting during rotation. Subsequently, the drive motor 33 is started, and the first bevel gear 34 and the second bevel gear 35 mesh to drive the brake disc to rotate stably around its own axis. This design ensures that the brake disc is subjected to uniform force throughout the sandblasting process, avoiding uneven surface treatment caused by workpiece eccentricity.

[0034] At the same time, the feeding motor 13 in the feeding assembly 1 is started. The abrasive in the storage box enters the guide channel through the discharge port, and is transported to the end of the channel under the push of the feeding screw 12, and is sprayed at high speed onto the surface of the brake disc through the spray head 2.

[0035] As the sandblasting operation proceeds, the blasted abrasive and impurities fall into the annular collection trough 6 of the recovery module 4. Due to the inclined bottom of the annular collection trough 6, the abrasive and impurities flow to one side under gravity and are separated by the filter screen 7. The vibrator, through the periodic vibration generated by the eccentric block, accelerates the material separation process, ensuring that the abrasive can be efficiently recovered and reused, while impurities are discharged from the system. This design not only reduces resource waste but also significantly improves recovery efficiency, providing a guarantee for continuous operation.

[0036] The airflow assist component 9 plays a crucial role in the sandblasting process. The air pump 5 delivers compressed air to multiple nozzles 8 through air pipes, forming an airflow barrier around the brake disc. This barrier effectively prevents abrasive particles from splashing outside the device, while maintaining the cleanliness and safety of the working area. In addition, the airflow barrier can also guide some of the scattered abrasive particles back to the annular collection trough 6, further optimizing the abrasive utilization rate.

[0037] By combining the above steps and principles, this invention achieves comprehensive surface treatment of the brake disc. The rotating clamping mechanism 3 ensures the stability and uniform force distribution of the workpiece; the feeding assembly 1 guarantees the continuity of abrasive supply; and the recycling module 4 and the airflow auxiliary assembly 9 work together to solve the problems of abrasive waste and environmental pollution. Ultimately, this device not only significantly improves the efficiency and quality of sandblasting and rust removal but also reduces the labor intensity of operators, providing a more efficient and precise solution for the automotive brake disc processing field.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0039] The prior art markings: the spray head 2, the feeding motor 13, the drive motor 33 and the air pump 5 are all common knowledge in the field. They are used without modification, so the control method and circuit connection will not be described in detail.

[0040] It should be noted that all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device that can be controlled by a computer or other means. The detailed description of known functions and known components is omitted in the specific implementation of this disclosure. In order to ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand blasting rust removing device for automobile brake disc processing, characterized in that, include: The support frame (10) consists of two upper and lower plates. The feeding assembly (1) has a guide channel extending along the abrasive conveying direction. The spray head (2) is located at the end of the guide channel and faces the brake disc surface. The rotating clamping mechanism (3) is used to fix the brake disc and enable it to rotate around its own axis. The recycling module (4) is located below the brake disc and is arranged around the outer periphery of the brake disc for collecting the sprayed abrasive and impurities. It also includes an airflow auxiliary assembly (9).

2. The sand blasting rust removal device for automobile brake disc machining according to claim 1, characterized in that, The upper plate of the support frame (10) is used to install the feeding assembly (1) and the spray head (2), and the lower plate is used to install the recycling module (4). The rotating clamping mechanism (3) is fixed at the center of the support frame (10) through the bearing seat. The drive motor (33) of the rotating clamping mechanism (3) is located on the lower plate, and the drive motor (33) is connected to the brake disc through the gear transmission system.

3. The sand blasting rust removal device for automobile brake disc machining according to claim 1, characterized in that, The recycling module (4) includes an annular collection trough (6) and a filter screen (7). The annular collection trough (6) is arranged around the outer periphery of the brake disc, and the bottom of the annular collection trough (6) is inclined to guide the abrasive and impurities to flow to one side. The filter screen (7) is set at the outlet of the annular collection trough (6) to separate the abrasive and impurities. A vibrator is provided above the filter screen (7).

4. The sandblasting and rust removal device for processing automotive brake discs according to claim 1, characterized in that, The airflow auxiliary component (9) includes an air pump (5), an air pipe and multiple nozzles (8). The air pump (5) is installed on the lower plate of the support frame (10). One end of the air pipe is connected to the air pump (5), and the other end is connected to multiple nozzles (8) through a branch pipe. Multiple nozzles (8) are evenly distributed on the inner wall of the annular collection trough (6), and the outlet direction of the nozzles (8) faces the surface of the brake disc.

5. The sand blasting rust removal device for automobile brake disc machining according to claim 1, characterized in that, The feeding assembly (1) also includes a storage box (11) and a feeding screw (12). The storage box (11) is located above the upper plate of the support frame (10). The bottom of the storage box (11) is provided with a discharge port, which is connected to the inlet of the guide channel. The feeding screw (12) is located inside the guide channel. One end of the feeding screw (12) is connected to the feeding motor (13). The feeding motor (13) is installed on the outer wall of the storage box (11). The blades of the feeding screw (12) are in clearance fit with the inner wall of the guide channel.

6. The sand blasting rust removing device for automobile brake disc machining according to claim 1, characterized in that, The rotating clamping mechanism (3) also includes a limiting plate (31), which is located on both sides of the brake disc. The limiting plate (31) is connected to the support frame (10) via a slide rail (32). The slide rail (32) extends horizontally. The limiting plate (31) is fixed to the slide rail (32) by locking bolts to adjust the distance between the limiting plates (31). An elastic pad is provided on the inner side of the limiting plate (31), and the elastic pad contacts the outer periphery of the brake disc.

7. The sand blasting rust removing device for automobile brake disc machining according to claim 2, characterized in that, The drive motor (33) is mounted on the lower plate of the support frame (10). The first bevel gear (34) of the gear transmission system is connected to the output shaft of the drive motor. The second bevel gear (35) meshes with the first bevel gear (34). The shaft of the second bevel gear (35) meshes with the inner ring of the brake disc.

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