A kind of brake pad powder spraying chamber heating chamber transition mechanism with anti-dust falling

Abstract

The utility model relates to brake pad production and manufacturing technical field, and disclose a kind of brake pad powder spraying chamber heating chamber transition mechanism with anti-dust, including the first transmission belt and the second transmission belt of different height, the limiting roller for being used to contact with workpiece is arranged in the junction of the first transmission belt close to the second transmission belt, and the flow guide plate for being used to turn over workpiece is located in the limiting roller close to the second transmission belt side, the limiting roller is hollow cylinder, and surface is equipped with multiple through-holes, the limiting roller is internally provided with cleaning fan blade, the outer wall of limiting roller is coated with rubber layer, to avoid scratch when contacting with workpiece, the utility model cooperates through limiting rod, limiting roller and flow guide plate, realizes brake pad double-sided cleaning using gravity overturning, improves coating quality;Adjusting screw can adapt to different workpiece size, enhance production line flexibility;Pure mechanical structure uses gravity and transmission belt airflow drive, realizes high-efficiency zero-energy-consumption powder cleaning.

Description

Technical Field

[0001] This utility model relates to the field of brake pad manufacturing, and in particular to a transition mechanism for the brake pad powder spraying chamber and heating chamber with anti-powder-shedding function. Background Technology

[0002] In the manufacturing process of brake pads, powder coating is applied to the metal backing plate to improve its corrosion resistance, insulation performance, and aesthetics. The main process involves: first, powder coating is evenly sprayed onto the brake pad surface in a powder spraying chamber using electrostatic adsorption; then, the workpiece is conveyed to a heating chamber for heat curing to form a robust coating. Currently, the transition area between the powder spraying chamber and the heating chamber is generally equipped with anti-powder and powder-removing mechanisms to remove excess powder that has not been firmly adsorbed onto the workpiece surface, preventing contamination of the heating chamber or affecting the curing quality.

[0003] Because brake pads are typically carried and transported by a conveyor chain (such as a hanger or support roller) with one side facing upwards during the conveying process, existing powder removal methods (such as air blowing, fixed brushes, or top vibration) can only effectively clean the upward-facing surface of the workpiece. The bottom surface of the workpiece, which is in direct contact with or adjacent to the conveyor chain (i.e., the side facing the conveyor chain), forms a "cleaning dead zone." This easily leads to incomplete cleaning, which in turn affects product quality. Excess powder adhering to the bottom surface of the brake pad cannot be effectively removed. When the workpiece enters the high-temperature heating chamber, this powder will melt and flow, contaminating the coating surface that should be clean. This results in appearance defects such as particles, pits, or flow marks on the cured workpiece. In severe cases, it can even affect the adhesion and uniformity of the coating, reducing product yield.

[0004] Therefore, a transition mechanism for the brake pad powder spraying chamber and heating chamber with anti-powder-falling features was designed. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a transition mechanism between the powder coating chamber and the heating chamber of brake pads with anti-powder-falling features. This solves the problem of "dead zones" on the bottom surface caused by the single-sided upward conveying of workpieces after powder coating, which results in residual powder entering the heating chamber and contaminating the coating. This leads to defects such as particles and pitting in the product, severely impacting quality and yield.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A transition mechanism for the heating chamber of a brake pad powder spraying chamber with anti-powder-falling features includes a first conveyor belt and a second conveyor belt with different heights, a limiting roller disposed at the junction of the first conveyor belt and the second conveyor belt for contacting the workpiece, and a guide plate located on the side of the limiting roller near the second conveyor belt for flipping the workpiece.

[0007] Preferably, the limiting roller is a hollow column with multiple through holes on its surface, and a cleaning fan blade is provided inside the limiting roller.

[0008] Preferably, the outer wall of the limiting roller is covered with a rubber layer to avoid scratching when it comes into contact with the workpiece.

[0009] Preferably, the guide plate has an arc-shaped surface with a central depression and convex sides, so that the workpiece can be centered when flipped.

[0010] Preferably, the guide plate is angled as a whole, and a rotating shaft is fixedly installed on its top section.

[0011] Preferably, both ends of the rotating shaft are fixedly installed with fixing blocks, the fixing blocks have through holes, and the fixing blocks are provided with first fixing screws that pass through the through holes to fix the rotation angle of the rotating shaft.

[0012] Preferably, the two sides of the rotating shaft are provided with mounting brackets that are slidably connected to the sliding grooves on the two sides of the frame of the second conveyor belt.

[0013] Preferably, the two mounting brackets are fixedly connected by a horizontal plate, on which a plurality of fan blades are fixedly arranged in a linear array; the bottom of the mounting bracket is T-shaped and the surface is provided with a through hole, and the internal thread of the through hole is provided with a second fixing screw for fixing the position of the mounting bracket.

[0014] Preferably, a limiting rod for flipping the workpiece from a lateral posture to a longitudinal posture is installed on the frame of the first conveyor belt away from the second conveyor belt.

[0015] Preferably, a protective cover is fixedly provided at the connection between the first conveyor belt and the second conveyor belt, and a collection box for collecting dust is placed at the bottom of the first conveyor belt and the second conveyor belt.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes the synergistic action of a limiting rod, limiting roller, and guide plate to achieve automatic and stable workpiece rotation using height difference and gravity. This effectively solves the cleaning dead-angle problem caused by the single-sided upward orientation in traditional conveying and cleaning methods, enabling all-around cleaning of powder adhering to both sides of the brake pads. This significantly improves the curing quality of the coating and product yield. By loosening the first and second fixing screws, the angle of the guide plate and its distance from the limiting roller can be easily adjusted, allowing the device to quickly adapt to brake pad workpieces of different sizes and specifications, greatly enhancing the flexibility of the production line. The combination of mechanical rotation to expose the surface and airflow to remove powder, with the rotation power derived from gravity and the fan blades driven by the airflow generated by the conveyor belt itself, achieves highly efficient cleaning. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structural relationship between the limiting roller and the guide plate of this utility model; Figure 3 This is a schematic diagram showing the structural relationship between the guide plate and the mounting bracket of this utility model; Figure 4 This is a schematic diagram showing the detailed structure of the guide plate of this utility model.

[0019] Drawing number descriptions: 1. First conveyor belt; 11. Limiting rod; 2. Second conveyor belt; 3. Limiting roller; 4. Guide plate; 41. Rotating shaft; 42. Fixing block; 421. First fixing screw; 43. Mounting bracket; 431. Horizontal plate; 432. Second fixing screw; 44. Fan blade; 5. Protective cover; 6. Collection box. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0022] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0023] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0024] Please see Figure 1-4 A transition mechanism for the heating chamber of a brake pad powder spraying chamber with anti-powdering features includes a first conveyor belt 1 and a second conveyor belt 2 with different heights, a limiting roller 3 set at the junction of the first conveyor belt 1 and the second conveyor belt 2 for contacting the workpiece, and a guide plate 4 located on the side of the limiting roller 3 near the second conveyor belt 2 for flipping the workpiece. The limiting roller 3 is a hollow cylinder with multiple through holes on its surface. The limiting roller 3 has cleaning blades inside and a rubber layer on its outer wall to prevent scratches when it comes into contact with the workpiece. The cleaning blades inside the limiting roller 3 can rotate by friction when the workpiece comes into contact with its surface, thereby sweeping the contact surface of the workpiece and helping to remove the attached powder. The guide plate 4 has an arc-shaped surface with a concave center and convex sides, so that the workpiece can be centered when flipping. The guide plate 4 is set at an angle, and a rotating shaft 41 is fixedly installed on the top section. Fixing blocks 42 are fixedly installed at both ends of the rotating shaft 41. The fixing blocks 42 have through holes and first fixing screws 421 that pass through the through holes to fix the rotation angle of the rotating shaft 41. The two sides of the rotating shaft 41 are rotatably connected to the sliding grooves on the two sides of the frame of the second conveyor belt 2. The two mounting brackets 43 are fixedly connected by a horizontal plate 431. Multiple fan blades 44 arranged in a linear array are fixedly installed on the horizontal plate 431. The bottom of the mounting bracket 43 is T-shaped and has through holes on the surface. The internal threads of the through holes are provided with second fixing screws 432 for fixing the position of the mounting bracket 43. This invention provides a transition mechanism for the heating chamber of a brake pad powder coating chamber with anti-powder-falling features. By utilizing the combined use of the limiting roller 3 and the guide plate 4, it achieves double-sided cleaning of the brake pad, effectively solving the problem of cleaning dead zones in traditional single-sided cleaning methods. When the brake pad that has been powder coated is horizontally conveyed to the end via the first conveyor belt 1, it first contacts the limiting rod 11, causing the workpiece to smoothly change from a horizontal posture to a side-standing position, preparing for subsequent flipping cleaning. Subsequently, the side-standing workpiece is conveyed to the junction of the first conveyor belt 1 and the second conveyor belt 2. Utilizing the height difference between the two conveyor belts, the workpiece begins to fall naturally under the action of gravity. During the fall, the bottom of the workpiece first contacts the limiting roller 3. The rubber layer covering the surface of the limiting roller 3 provides effective cushioning, preventing scratches on the surface of the coated workpiece. At the same time, the cleaning fan blades inside the limiting roller 3 rotate under the drive of the contact friction force of the workpiece, sweeping the bottom surface of the workpiece, achieving preliminary auxiliary powder cleaning. Next, the upper part of the workpiece tilts towards and contacts the guide plate 4 behind it. The unique concave center and convex arc-shaped surface structure of the guide plate 4 ensures that the workpiece remains in the center position during its descent, thus smoothly completing a 180-degree flip and fully exposing the bottom surface that was originally facing the transfer roller and difficult to clean. The key to the entire powder cleaning process lies in the interaction between the workpiece and the guide plate 4. The guide plate 4, through the rotating shaft 41 and the adjustable mounting bracket 43, forms a stable support structure, making the flipping action precise and reliable. Multiple fan blades 44, which are fixed on the horizontal plate 431 and arranged in a linear array, rotate under the airflow caused by the operation of the second conveyor belt 2, generating a directional airflow that blows toward the surface of the workpiece that is being flipped. Through a coordinated powder cleaning mechanism that is mainly mechanical flipping and supplemented by airflow cleaning, the front and back sides of the brake pad are thoroughly cleaned. The flipping action exposes all surfaces of the workpiece, while the airflow promptly blows away and carries away the shaken-off suspended powder. All the removed powder is sealed inside the protective cover 5 and finally falls into the collection box 6 at the bottom under the action of gravity for unified collection. The second fixing screw 432 and the first fixing screw 421 can be loosened by manually turning them, so as to adjust the position of the mounting bracket 43 and the angle of the rotating shaft 41, thereby adjusting the interval between the guide plate 4 and the limiting roller 3 and the angle of the guide plate 4, which is convenient for adapting to workpieces of different sizes and lengths for flipping.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A transition mechanism for the heating chamber of a brake pad powder spraying chamber with anti-powder-falling features, characterized in that, It includes a first conveyor belt (1) and a second conveyor belt (2) of different heights, a limiting roller (3) disposed at the junction of the first conveyor belt (1) and the second conveyor belt (2) for contacting the workpiece, and a guide plate (4) located on the side of the limiting roller (3) near the second conveyor belt (2) for flipping the workpiece.

2. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 1, characterized in that: The limiting roller (3) is a hollow column with multiple through holes on its surface, and a cleaning fan blade is provided inside the limiting roller (3).

3. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 2, characterized in that: The outer wall of the limiting roller (3) is covered with a rubber layer to avoid scratching when it comes into contact with the workpiece.

4. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 3, characterized in that: The guide plate (4) has an arc-shaped surface with a central depression and convex sides, so that the workpiece can be centered when it is flipped.

5. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 4, characterized in that: The guide plate (4) is set at an angle, and a rotating shaft (41) is fixedly set on its top section.

6. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powdering feature according to claim 5, characterized in that: Both ends of the rotating shaft (41) are fixedly installed with fixing blocks (42). The fixing blocks (42) have through holes and are provided with first fixing screws (421) that pass through the through holes to fix the rotation angle of the rotating shaft (41).

7. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 6, characterized in that: The two sides of the rotating shaft (41) are provided with mounting brackets (43) that are slidably connected to the sliding grooves on both sides of the frame of the second conveyor belt (2).

8. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 7, characterized in that: The two mounting brackets (43) are fixedly connected by a horizontal plate (431), on which a plurality of fan blades (44) are fixedly arranged in a linear array. The bottom of the mounting bracket (43) is T-shaped and has a through hole on its surface. The internal thread of the through hole is provided with a second fixing screw (432) for fixing the position of the mounting bracket (43).

9. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 1, characterized in that: A limiting rod (11) for flipping the workpiece from a lateral posture to a longitudinal posture is installed on the frame of the first conveyor belt (1) away from the second conveyor belt (2).

10. The transition mechanism for the brake pad powder spraying chamber heating chamber with anti-powder-falling feature according to claim 1, characterized in that: A protective cover (5) is fixedly installed at the connection between the first conveyor belt (1) and the second conveyor belt (2), and a collection box (6) for collecting dust is placed at the bottom of the first conveyor belt (1) and the second conveyor belt (2).

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