Automatic uniform gluing mechanism based on brake shoe assembly

Abstract

The utility model discloses an automatic even gluing mechanism based on a brake shoe assembly, and relates to the technical field of gluing equipment, the automatic even gluing mechanism comprises a brake shoe assembly gluing device, a reciprocating linear execution device is installed on one side of the upper portion of the brake shoe assembly gluing device, a swing mechanism is arranged on one side of the reciprocating linear execution device, and the swing mechanism is connected with the brake shoe assembly gluing device. A driving motor drives a driving rod to drive a swing rod to swing in a reciprocating mode, a glue spraying head sprays glue in an arc shape, it is ensured that the surface of a brake shoe assembly can be evenly covered, meanwhile, a screw can be driven to rotate under driving of a servo motor, a trapezoidal sliding block is driven to move, and the relative position of the swing rod and the sliding block is flexibly adjusted; the size of a swing arc line of the swing rod is changed, then the spraying track of the glue spraying head is matched with the curved surface outline of the brake shoe assembly, the spraying blind area or glue accumulation phenomenon is avoided, and efficient and even gluing of the brake shoe assemblies of different specifications is achieved.

Description

Technical Field

[0001] This utility model relates to the field of adhesive coating equipment technology, specifically to an automatic uniform adhesive coating mechanism based on a brake shoe assembly. Background Technology

[0002] The brake shoe assembly is one of the core components of an automotive braking system (especially drum brakes). It is mainly used to realize the braking function of the vehicle. The main body is a metal shoe-shaped structure, which is the basic frame of the assembly. It is usually made of steel plate or cast iron, which has a certain strength and rigidity. Friction materials (such as brake shoe friction pads) are installed on the surface. The braking force is generated by friction with the brake drum. The brake shoe assembly is coated with adhesive by applying adhesive evenly to the surface of the brake shoe through an applicator or roller. This is used to firmly bond the friction pads to the brake shoe (metal substrate) to ensure the reliability and safety of the vehicle during braking.

[0003] Referring to the patent document: Patent Publication No. CN211989387U, Patent Publication Date 2020-11-24, this invention relates to a brake pad coating device, comprising: a first roller rotating in the opposite direction to the conveyor belt's conveying direction, and a second roller rotating in the same direction as the conveyor belt's conveying direction, the second roller being a rubber roller; both the first and second rollers have horizontally arranged roller shafts, and an adjustable first radial gap is provided between them; both ends of the first roller have flanges, the outer diameter of which is larger than the outer diameter of the first roller; the inner sides of the two flanges are respectively adjacent to the ends of the second roller; a glue supply pipe for providing adhesive is provided above the first and second rollers; the height difference between the bottom of the second roller and the conveyor belt is less than the thickness of the brake pad; the height difference between the bottom of the flange and the conveyor belt is greater than the thickness of the brake pad. The device features a simple structure, is easy to adjust, and has high coating efficiency.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Currently, when applying adhesive to brake shoe assemblies, automated adhesive application equipment often uses a single nozzle mounted on a reciprocating mechanism. This method is difficult to adapt to the complex arc-shaped structure and irregular adhesive application area of ​​brake shoes, resulting in uneven adhesive application. Consequently, problems such as broken adhesive lines and uneven thickness at overlaps are prone to occur during adhesive application, which in turn affects the product quality of brake shoe assemblies.

[0006] Therefore, this utility model provides an automatic uniform adhesive application mechanism based on the brake shoe assembly. Utility Model Content

[0007] To address the problem that existing automated adhesive application equipment often uses fixed-angle reciprocating linear motion to apply adhesive to brake shoe assemblies, which is difficult to adapt to the complex arc structure and irregular adhesive application area of ​​brake shoes, resulting in uneven adhesive application, the purpose of this utility model is to provide an automatic uniform adhesive application mechanism based on brake shoe assemblies.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic uniform adhesive application mechanism based on a brake shoe assembly, comprising a brake shoe assembly adhesive application device, wherein a reciprocating linear actuator is mounted on one side of the upper part of the brake shoe assembly adhesive application device, and a swing mechanism is provided on one side of the reciprocating linear actuator, the swing mechanism comprising:

[0009] The uniform spraying assembly includes a mounting bracket installed at the bottom of a reciprocating linear actuator. A fixed plate is fixedly installed on the middle of one side of the mounting bracket, and a screw is rotatably installed on the middle of the fixed plate. A servo motor is fixedly installed at the top of the mounting bracket, and the top of the screw is fixedly installed on the drive end of the servo motor. A trapezoidal slider is threaded onto the middle of the screw, and a moving block is fixedly installed on one side of the trapezoidal slider. A swing arm is rotatably installed on the middle of both sides of the moving block. A sliding block is slidably engaged on the middle of one side of each of the two swing arms, and a drive rod is rotatably installed on the middle of one side of each of the two sliding blocks. A drive assembly is provided on one side of one of the drive rods. A fixed bracket is rotatably installed on the lower part of the opposite sides of the two swing arms, and two symmetrically distributed spray nozzles are fixedly installed at the middle of the bottom of the fixed bracket.

[0010] An angle adjustment assembly, located at both ends of the mounting bracket, is used to adjust the angle of the spray nozzle.

[0011] Preferably, the angle adjustment assembly includes worm gears fixedly installed at both ends of the fixed frame, fixed covers fixedly installed on the lower parts of the opposite sides of the two swing rods, both ends of the fixed frame slidingly passing through the middle of the fixed covers, and worms rotatably installed on the upper parts of the two fixed covers, with the two worms meshing with the worm gears.

[0012] Preferably, the drive assembly includes a drive motor fixed to one side of the mounting bracket, with one end of a drive rod fixedly mounted on the drive end of the drive motor.

[0013] Preferably, both sides of the two swing rods are provided with limit grooves, and both sides of the two sliding blocks are slidably locked in the middle of the limit grooves.

[0014] Preferably, a spring is fixedly installed on the middle of one side of one of the swing rods, and the other side of the spring is fixedly installed on the middle of one side of the sliding block.

[0015] Preferably, a trapezoidal groove is provided in the middle of one side of the fixing plate, and the trapezoidal slider is slidably engaged in the middle of the trapezoidal groove.

[0016] Beneficial effects

[0017] This invention provides an automatic uniform adhesive application mechanism based on a brake shoe assembly. Compared with the prior art, it has the following advantages:

[0018] 1. This application uses a drive motor to drive a drive rod, which in turn drives a swing rod to swing back and forth, causing the glue spray head to spray glue in an arc shape. This ensures that the surface of the brake shoe assembly can be evenly covered. At the same time, a servo motor can drive a screw to rotate, which in turn moves a trapezoidal slider. This allows for flexible adjustment of the relative position of the swing rod and the slider, thereby changing the size of the swing arc of the swing rod. This makes the spray trajectory of the glue spray head match the curved surface contour of the brake shoe assembly, avoiding blind spots or glue accumulation, and achieving efficient and uniform glue application for brake shoe assemblies of different specifications.

[0019] 2. This application achieves a fine adjustment of the spray head angle by simultaneously rotating two worm gears, which in turn drive the meshing worm wheel to rotate, thereby causing the fixed frame to deflect. This allows the spray head to flexibly adjust the spray angle according to the glue application requirements of different parts of the brake shoe assembly, ensuring that the glue can be accurately sprayed onto the designated position. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional structural diagram of the uniform spraying component of this utility model.

[0022] Figure 3 This is a schematic diagram of another cross-sectional structure of the uniform spraying component of this utility model.

[0023] Figure 4 This is a cross-sectional structural diagram of the angle adjustment component of this utility model.

[0024] In the diagram: 1. Brake shoe assembly adhesive application equipment; 2. Swinging mechanism; 21. Uniform spraying component; 211. Mounting bracket; 212. Fixing plate; 213. Screw; 214. Trapezoidal slider; 2141. Trapezoidal groove; 215. Servo motor; 216. Moving block; 2161. Swing rod; 217. Drive motor; 2171. Drive rod; 218. Sliding block; 2181. Limiting groove; 2182. Spring; 219. Adhesive spray head; 22. Angle adjustment component; 221. Fixing bracket; 222. Fixing cover; 223. Worm gear; 224. Worm wheel; 3. Reciprocating linear actuator. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-4 This utility model provides a technical solution: an automatic uniform adhesive application mechanism based on a brake shoe assembly, including a brake shoe assembly adhesive application device 1. The device 1 consists of a frame (for supporting the main structure of the entire device and ensuring stability), a conveying mechanism (for continuously conveying workpieces and realizing assembly line operation), an adhesive application execution system (for applying adhesive to the brake shoe assembly), and electrical and control equipment (integrating electrical components (such as relays and circuit breakers) and a programmable logic controller (PLC) for coordinating the actions of various components and executing the adhesive application program). A reciprocating linear actuator 3 is installed on the upper side of the brake shoe assembly adhesive application device 1. This actuator 3 can use a square ball linear guide rail with four rows of circular arc grooves and four rows of steel balls at a 45-degree contact angle, capable of withstanding loads from the vertical and horizontal directions. Preload can be applied to improve rigidity. It is driven by a motor to rotate a lead screw, which in turn drives a slider to move linearly along the guide rail. Reciprocating movement is achieved by the forward and reverse rotation of the motor. A swing mechanism 2 is provided on one side of the reciprocating linear actuator 3. The swing mechanism 2 includes:

[0027] The uniform spraying assembly 21 includes a mounting bracket 211 installed at the bottom of the reciprocating linear actuator 3. A fixing plate 212 is fixedly installed on the middle of one side of the mounting bracket 211. A screw 213 is rotatably installed on the middle of the fixing plate 212. A servo motor 215 is fixedly installed at the top of the mounting bracket 211. The servo motor 215 is model IS17P-01 and has a high-resolution encoder. The servo motor 215 is connected to the PLC control system of the brake shoe assembly adhesive application equipment 1 through a dedicated servo driver. The PLC control system can send pulse signals and direction signals to the servo driver according to the preset brake shoe assembly curvature to precisely control the rotation angle and speed of the servo motor 215, thereby driving the screw 213 to move and adjust the swing angle of the spray head 219. The top of the screw 213 is fixedly installed on the drive end of the servo motor 215. A trapezoidal slider 214 is threadedly installed in the middle of the screw 213. A moving block 216 is fixedly installed on one side of the trapezoidal slider 214. Both sides of the moving block 216 are rotatably mounted on the middle. The device is equipped with two swing arms 2161, which are mounted on one end of a movable block 216 and connected by a rotating shaft. Driven by a drive motor 217, one swing arm 2161 swings, and the other swing arm 2161 swings synchronously via the rotating shaft. Each swing arm 2161 has a sliding block 218 slidably engaged at the center of one side, and each sliding block 218 has a drive rod 2171 rotatably mounted at the center of one side. One of the drive rods 2171 has a drive assembly on one side. The drive motor 217 of the drive assembly drives the drive rod 2171 to rotate, causing the sliding block 218 on one side to move back and forth on one side of the swing rod 2161, thereby driving the swing rod 2161 to swing back and forth. A fixed frame 221 is rotatably installed on the lower part of the opposite side of the two swing rods 2161. Two symmetrically distributed spray nozzles 219 are fixedly installed at the bottom center of the fixed frame 221. The spray nozzles 219 adopt a new precision nozzle design, which can accurately control the flow rate and spraying range of the glue, and ensure the uniformity of the glue application.

[0028] Angle adjustment components 22 are located at both ends of the fixing frame 221 and are used to adjust the angle of the spray nozzle 219.

[0029] The angle adjustment assembly 22 includes worm gears 224 fixedly installed at both ends of the fixed frame 221. Fixed covers 222 are fixedly installed on the lower parts of the opposite sides of the two swing rods 2161. Both ends of the fixed frame 221 slide through the middle of the fixed covers 222. Worms 223 are rotatably installed on the upper parts of the two fixed covers 222. Both worm gears 223 are meshed with the worm gears 224. The angle of the fixed frame 221, i.e., the angle of the spray nozzle 219, is adjusted through the transmission of the worm gears 223 and worm gears 224. The worm gears 223 and worm gears 224 have a self-locking function. A set of worm gears 223 and worm gears 224 is provided at both ends of the fixed frame 221, so that the angle of the spray nozzle 219 is fixed by the self-locking of the two sets of worm gears 223 and worm gears 224.

[0030] The drive assembly includes a drive motor 217 fixed to one side of the mounting bracket 211. One end of a drive rod 2171 is fixedly mounted on the drive end of the drive motor 217. The drive motor 217 is a model IM35ET020 with high torque output characteristics. The drive motor 217 is connected to the PLC control system of the brake shoe assembly glue application equipment 1 through a frequency converter. The PLC control system adjusts the output frequency of the frequency converter according to the glue application process requirements, thereby controlling the speed of the drive motor 217, and thus controlling the oscillation speed of the glue spray head 219 to avoid excessive or insufficient glue application.

[0031] Limiting grooves 2181 are provided on both sides of the two swing rods 2161, and the two sliding blocks 218 are slidably locked in the middle of the limiting grooves 2181 on both sides, so that the movement of the sliding blocks 218 can be limited by the limiting grooves 2181 to prevent them from deviating.

[0032] A spring 2182 is fixedly installed on the middle of one side of one of the swing rods 2161, and the other side of the spring 2182 is fixedly installed on the middle of one side of the sliding block 218. The elastic potential energy generated by the spring 2182 through the compression of the sliding block 218 generates a driving force for the reset of the sliding block 218, thereby providing power to the swing rod 2161 on the other side. Under the limitation of the spring 2182, the sliding block 218 on this side only swings back and forth with the swing rod 2161, and does not perform circular motion like the drive rod 2171 connected to the drive motor 217.

[0033] A trapezoidal groove 2141 is provided in the middle of one side of the fixed plate 212. The trapezoidal slider 214 is slidably locked in the middle of the trapezoidal groove 2141. The cross section of the trapezoidal groove 2141 is a trapezoidal structure, which can limit the trapezoidal slider 214 so that the trapezoidal slider 214 can slide along the trapezoidal groove 2141 under the rotation of the screw 213.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] During operation, the drive motor 217 drives the drive rod 2171 on one side to rotate. Since the drive rod 2171 rotates to the middle of the sliding block 218, the sliding block 218 slides back and forth on one side of the swing rod 2161 as the drive rod 2171 swings. This causes the two swing rods 2161 to swing back and forth, which in turn causes the spray nozzle 219 to swing in an arc shape, thereby spraying the brake shoe assembly conveyed by the conveying equipment below. At the same time, driven by the reciprocating linear actuator 3, the spray nozzle 219 slides back and forth along the guide rail, thereby evenly spraying the glue onto the surface of the brake shoe assembly.

[0036] Meanwhile, when facing brake shoe assemblies with different arc surfaces, the forward and reverse rotation of the servo motor 215 can drive the trapezoidal slider 214 to move, thereby adjusting the relative position of the two swing rods 2161 and the sliding block 218. When the swing rods 2161 move downward, the sliding block 218 can slide mainly on the side that rotates around the moving block 216, making the swing arc of the two swing rods 2161 larger. When the moving block 216 moves upward, the swing arc of the swing rods 2161 becomes smaller, thus adapting to the glue spraying of brake shoe assemblies with different arc surfaces.

[0037] When it is necessary to adjust the angle of the spray nozzle 219, the angle of the spray nozzle 219 can be adjusted by simultaneously rotating the two worm gears 224, causing the fixed bracket 221 to deflect to one side.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic uniform adhesive application mechanism based on a brake shoe assembly, comprising a brake shoe assembly adhesive application device (1), characterized in that: A reciprocating linear actuator (3) is installed on one side of the upper part of the brake shoe assembly adhesive application equipment (1). A swing mechanism (2) is provided on one side of the reciprocating linear actuator (3). The swing mechanism (2) includes: The uniform spraying assembly (21) includes a mounting bracket (211) installed on the lower part of the reciprocating linear actuator (3). A fixing plate (212) is fixedly installed on the middle of one side of the mounting bracket (211). A screw (213) is rotatably installed on the middle of the fixing plate (212). A servo motor (215) is fixedly installed on the top of the mounting bracket (211). The top of the screw (213) is fixedly installed on the drive end of the servo motor (215). A trapezoidal slider (214) is threadedly installed on the middle of the screw (213). A moving part is fixedly installed on one side of the trapezoidal slider (214). The movable block (216) has a swing arm (2161) rotatably mounted on the middle of both sides. A sliding block (218) is slidably mounted on the middle of one side of each of the two swing arms (2161). A drive rod (2171) is rotatably mounted on the middle of one side of each of the two sliding blocks (218). A drive assembly is provided on one side of one of the drive rods (2171). A fixed frame (221) is rotatably mounted on the lower part of the opposite side of the two swing arms (2161). Two symmetrically distributed glue spray heads (219) are fixedly mounted on the middle of the bottom end of the fixed frame (221). An angle adjustment component (22) is set at both ends of the fixing frame (221) and is used to adjust the angle of the spray nozzle (219).

2. The automatic uniform adhesive application mechanism based on the brake shoe assembly according to claim 1, characterized in that: The angle adjustment assembly (22) includes worm gears (224) fixedly installed at both ends of the fixed frame (221), fixed covers (222) fixedly installed on the lower part of the opposite sides of the two swing rods (2161), both ends of the fixed frame (221) slidingly passing through the middle of the fixed cover (222), and worm gears (223) rotatably installed on the upper part of the two fixed covers (222), and both worm gears (223) meshing with the worm gears (224).

3. The automatic uniform adhesive application mechanism based on the brake shoe assembly according to claim 1, characterized in that: The drive assembly includes a drive motor (217) fixed to one side of the mounting bracket (211), with one end of a drive rod (2171) fixedly mounted on the drive end of the drive motor (217).

4. The automatic uniform adhesive application mechanism based on the brake shoe assembly according to claim 1, characterized in that: Limiting grooves (2181) are provided on both sides of the two swing rods (2161), and the two sliding blocks (218) are slidably locked in the middle of the limiting grooves (2181) on both sides.

5. The automatic uniform adhesive application mechanism based on the brake shoe assembly according to claim 1, characterized in that: A spring (2182) is fixedly installed on the middle of one side of one of the swing rods (2161), and the other side of the spring (2182) is fixedly installed on the middle of one side of the sliding block (218).

6. The automatic uniform adhesive application mechanism based on the brake shoe assembly according to claim 1, characterized in that: A trapezoidal groove (2141) is provided in the middle of one side of the fixing plate (212), and a trapezoidal slider (214) is slidably locked in the middle of the trapezoidal groove (2141).

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