A tire inner composite layer spraying device

Abstract

This utility model belongs to the field of tire inner composite layer spraying technology, specifically a tire inner composite layer spraying device, including: a frame, a PLC controller mounted on the frame, a first drive motor mounted on one side of the frame, and a bidirectional screw fixedly connected to the output end of the first drive motor; the first drive motor drives the bidirectional screw to rotate, thereby adjusting the distance between the two rotating rods, thus restricting the position of the tire during the inner wall spraying process and preventing the tire from falling off. Furthermore, the distance between the two sets of adjusting blocks can be adjusted by the rotation of the bidirectional screw. Factories do not need to purchase separate dedicated equipment for different specifications of passenger car tires, SUV tires, light truck tires, etc.; one device can cover most product lines, thereby expanding the applicability of the composite layer spraying device and saving time on changing fixtures, thus significantly improving production efficiency and automation, and ultimately enhancing the practicality of the device.

Description

Technical Field

[0001] This utility model belongs to the field of tire inner composite layer spraying technology, specifically a tire inner composite layer spraying device. Background Technology

[0002] In the tire manufacturing process, in order to improve the tire's puncture resistance, self-healing or airtight performance, it is usually necessary to spray a special sealant or composite coating on the inner wall of the formed tire, thus requiring a tire inner composite layer spraying device.

[0003] The existing composite coating equipment includes: a frame, a safety guard, a tire clamping mechanism, a drive motor, and a spray gun movement mechanism. The operator places the tire on the frame, and the clamping mechanism automatically tightens and fixes the tire, allowing the spray gun to enter the tire along a preset path. At the same time, the feed pump starts, causing the tire to rotate while the spray gun moves, thus spraying the tire. After the spraying is completed, the spray gun retracts and the clamping mechanism releases, allowing the operator to remove the tire and complete the composite coating process.

[0004] However, existing composite layer spraying devices still have some problems. The distance between their tire clamping mechanisms is fixed, which can only clamp and fix tires of the same size, thus reducing the applicable range of the spraying device and consequently reducing its practicality. Therefore, a tire inner composite layer spraying device is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and address the problems of existing equipment, this utility model proposes a tire inner composite layer spraying device.

[0006] The technical solution adopted by this utility model to solve its technical problem is a tire inner composite layer spraying device, including: a frame, on which a PLC controller is installed, a first drive motor is installed on one side of the frame, and a bidirectional screw is fixedly connected to the output end of the first drive motor. One end of the bidirectional screw is rotatably connected to the inside of the frame. Two sets of adjusting blocks are threadedly connected to the bidirectional screw. Both sets of adjusting blocks have internal threads, which are opposite and match the threads on the bidirectional screw. Positioning rods are symmetrically threaded to the upper surface of the adjusting blocks. A rotating rod is rotatably connected to the positioning rod. A second drive motor is installed on one side of the frame. A first transmission rod is fixedly connected to the output end of the second drive motor. An internal toothed transmission belt is driven to one end of the first transmission rod. A second transmission rod is driven to the inner surface of the internal toothed transmission belt. A pulley is fixedly connected to one end of both the first and second transmission rods. The distance between the two sets of adjusting blocks can be adjusted by the rotation of the bidirectional screw. Therefore, the factory does not need to purchase special equipment for different specifications of car tires, SUV tires, light truck tires, etc., thereby expanding the application range of the composite layer spraying device.

[0007] Preferably, the pulley is meshed with the internal toothed drive belt, and the first and second drive rods are rotatably connected inside the frame. The first and second drive rods rotate in the same direction and at the same speed, which can drive the tire to be sprayed to rotate during the operation of the spraying device, thereby changing the contact area between the inner wall of the tire and the paint spray head, making the spraying more convenient.

[0008] Preferably, an electric telescopic rod is installed on one side of the frame. A connecting plate is fixedly connected to the telescopic end of the electric telescopic rod. A transmission pipe is threaded onto the connecting plate. The transmission pipe passes through the frame and is connected to a material pump at one end. The electric telescopic rod drives the paint spray head and cleaning brush to move, which is coordinated with the rotation speed of the tire to change the spraying position on the inner wall of the tire and avoid uneven spraying caused by different contact time between the inner wall of the tire and the paint spray head.

[0009] Preferably, the other end of the transmission tube is threaded to a paint spray head, and the connecting plate is threaded to a dust suction pipe. One end of the dust suction pipe is fixedly connected to a dust cover, and the other end of the dust suction pipe is fixedly connected to a cleaning brush. The dust cover can cover the dust that has been swept out, thereby preventing dust from covering the surface of the paint spray head.

[0010] Preferably, the other end of the suction pipe is threaded to a dust collection box, the dust collection box is equipped with a filter screen, and a fan is installed on one side of the dust collection box. The dust swept out is sucked into the dust collection box by the fan and the suction pipe. After being separated by the filter screen, it is discharged outward through the exhaust port, so that the dust remains inside the dust collection box.

[0011] Preferably, the dust collection box has an exhaust vent on one side and a door hinged on the other side. The PLC controller is used to control the start and stop of the first drive motor, the second drive motor, the electric telescopic rod, the paint spray head, and the fan. By controlling the first drive motor, the second drive motor, the electric telescopic rod, the paint spray head, and the fan through an external controller, the ease of use of the spraying device is improved.

[0012] The advantages of this invention are as follows: By driving the bidirectional screw to rotate through the first drive motor, the distance between the two rotating rods can be adjusted, thereby restricting the position of the tire during the inner wall spraying process and preventing the tire from falling off. Furthermore, the distance between the two sets of adjusting blocks can be adjusted by the rotation of the bidirectional screw. Factories do not need to purchase special equipment for different specifications of passenger car tires, SUV tires, light truck tires, etc. One device can cover most product lines, thereby expanding the applicability of the composite layer spraying device. At the same time, it saves the time of changing fixtures, thus greatly improving production efficiency and automation, and thus improving the practicality of the device.

[0013] This utility model's cleaning brush comes into direct contact with the inner wall of the tire and rotates in coordination with the tire. The surface to be coated is first cleaned by the cleaning brush, and then the coating is applied to the paint spray head for composite layer treatment. The dust collected during cleaning is sucked into the dust collection box through the suction pipe, allowing the paint to directly contact the clean rubber surface, forming a strong mechanical and chemical bonding force. This fundamentally prevents the coating from blistering, cracking, or large-area peeling due to bumps and flexing during future use, thereby improving the quality of the composite layer coating on the inner wall of the tire. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0015] Figure 1 This is a schematic diagram of the overall structure; Figure 2 This is a schematic cross-sectional view of the overall structure; Figure 3 This is a schematic diagram of the positioning component; Figure 4 This is a schematic diagram of the transmission assembly; Figure 5 This is a schematic diagram of the spraying assembly.

[0016] In the diagram: 1. Frame; 2. PLC controller; 3. First drive motor; 4. Bidirectional screw; 5. Adjusting block; 6. Positioning rod; 7. Rotating rod; 8. Second drive motor; 9. First transmission rod; 901. Pulley; 10. Internal toothed transmission belt; 11. Second transmission rod; 12. Electric telescopic rod; 13. Connecting plate; 14. Transmission pipe; 15. Spray head; 16. Dust suction pipe; 17. Dust cover; 18. Cleaning brush; 19. Dust collection box; 20. Fan; 21. Filter screen. Detailed Implementation

[0017] 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 scope of protection of the present utility model.

[0018] Please see Figure 1-5 As shown, a tire inner composite layer spraying device includes a frame 1, on which a PLC controller 2 is mounted. A first drive motor 3 is mounted on one side of the frame 1. A bidirectional screw 4 is fixedly connected to the output end of the first drive motor 3. One end of the bidirectional screw 4 is rotatably connected inside the frame 1. Two sets of adjusting blocks 5 are threadedly connected to the bidirectional screw 4. Both sets of adjusting blocks 5 have internal threads, which are opposite and match the threads on the bidirectional screw 4. Positioning rods 6 are symmetrically threaded onto the upper surface of the adjusting blocks 5. A rotating rod 7 is rotatably connected to the positioning rod 6. A second drive motor 8 is installed on one side of the frame 1. A first transmission rod 9 is fixedly connected to the output end of the second drive motor 8. An internal toothed transmission belt 10 is driven to one end of the first transmission rod 9. A second transmission rod 11 is driven to the inner surface of the internal toothed transmission belt 10. A pulley 901 is fixedly connected to one end of both the first transmission rod 9 and the second transmission rod 11. The pulley 901 meshes with the internal toothed transmission belt 10 for transmission. Both the first transmission rod 9 and the second transmission rod 11 are rotatably connected inside the frame 1. In tire manufacturing, to improve puncture resistance, self-healing, or airtightness, a special sealant or composite coating is typically sprayed onto the inner wall of the molded tire. This necessitates a tire inner composite layer spraying device. In practical use, the tire to be coated is placed on the first transmission rod 9 and the second transmission rod 11, positioned between two sets of adjusting blocks 5. The PLC controller 2 then activates the first drive motor 3, rotating the adjusting blocks 5. This causes the two sets of adjusting blocks 5 to move in opposite directions, changing the distance between them. When the rotating rods 7 on both sides are in contact with the tire's sides, the first drive motor 3 is turned off, fixing the position of the rotating rods 7. This restricts the position of the rotating rods during the inner wall coating process, preventing tire detachment. Furthermore, the distance between the two sets of adjusting blocks 5 can be adjusted by the rotation of the bidirectional screw 4, eliminating the need for the factory to process different sizes of passenger car tires, S-type tires, etc. Specialized equipment is purchased for UV tires, light truck tires, etc., and one machine can cover most product lines, thereby expanding the application range of the composite layer spraying device. At the same time, it saves the time of changing clamps, which can greatly improve production efficiency and automation, and thus improve the practicality of the device. Then, the side of the tire close to the electric telescopic rod 12 is pressed down so that the connecting plate 13 can enter the tire. Then, the second drive motor 8 is started by the PLC controller 2, which drives a set of pulleys 901 and the first transmission rod 9 to rotate. This drives the internal tooth transmission belt 10 to drive the transmission. The internal teeth of the internal tooth transmission belt 10 drive another set of pulleys 901 and the second transmission rod 11 to rotate, so that the first transmission rod 9 and the second transmission rod 11 rotate in the same direction and at the same speed. During the operation of the spraying device, the tire to be sprayed is rotated, thereby changing the contact area between the inner wall of the tire and the paint spray head 15, making the spraying more convenient.

[0019] Please see Figure 1-5 As shown, an electric telescopic rod 12 is installed on one side of the frame 1. A connecting plate 13 is fixedly connected to the telescopic end of the electric telescopic rod 12. A transmission pipe 14 is threaded onto the connecting plate 13. The transmission pipe 14 passes through the frame 1 and is connected to a material pump at one end. A paint spray head 15 is threaded onto the other end of the transmission pipe 14. A dust suction pipe 16 is threaded onto the connecting plate 13. A dust cover 17 is fixedly connected to one end of the dust suction pipe 16. A cleaning brush 18 is fixedly connected to one end of the dust suction pipe 16. A dust collection box 19 is threaded onto the other end of the dust collection box 19. A filter screen 21 is installed inside the dust collection box 19. A fan 20 is installed on one side of the dust collection box 19. An exhaust port is opened on one side of the dust collection box 19, and a door is hinged on the other side. The PLC controller 2 is used to control the start and stop of the first drive motor 3, the second drive motor 8, the electric telescopic rod 12, the paint spray head 15, and the fan 20. After the tire is fixed, manually lift the side closest to the connecting plate 13 downwards. Start the electric telescopic rod 12 via PLC controller 2 to push the paint nozzle 15 and cleaning brush 18 into the tire. Then connect the external suction pump to the paint tank. Start the suction pump and paint nozzle 15 via PLC controller 2 to draw paint from the paint tank into the transmission pipe 14. The paint is then atomized by the paint nozzle 15 and sprayed onto the inner wall of the tire. Simultaneously, start the fan 20 via PLC controller 2. Because the cleaning brush 18 is relatively long, it can directly contact the inner wall of the tire and rotate with the tire, thus cleaning the inner wall of the tire during the spraying process. The cleaned dust is then sucked into the dust collection box 19 through the suction pipe 16 and filtered through the filter 2. After separation, the dust is discharged outward through the exhaust port, leaving the dust inside the dust collection box 19. When the tire is being sprayed, its spraying surface is first cleaned by the cleaning brush 18, and then sprayed with a composite layer by the paint nozzle 15. This allows the paint to directly contact the clean rubber surface, forming a strong mechanical and chemical bonding force. This fundamentally prevents the coating from blistering, cracking, or large-area peeling due to bumps and flexing during future use, thereby improving the quality of the composite layer spraying on the inner wall of the tire. In coordination with the tire rotation speed, the electric telescopic rod 12 moves the paint nozzle 15 and the cleaning brush 18 every certain number of tire rotations, changing the spraying position on the inner wall of the tire and avoiding uneven spraying due to different contact times between the inner wall of the tire and the paint nozzle 15.

[0020] Working principle: The tire to be coated with the composite layer is placed on the first transmission rod 9 and the second transmission rod 11, positioned between the two sets of adjusting blocks 5. Then, the first drive motor 3 is started via the PLC controller 2, driving the adjusting blocks 5 to rotate. This causes the two sets of adjusting blocks 5 to move in opposite directions, thus changing the distance between them. When the rotating rods 7 on both sides are in contact with the sides of the tire, the first drive motor 3 is turned off, restricting the tire's position. After the tire is fixed, the side closest to the connecting plate 13 is manually lifted downwards. The second drive motor 8 is started via the PLC controller 2, driving a set of pulleys 901 and the first transmission rod 9 to rotate. This, in turn, drives the internal toothed transmission belt 10, which in turn drives the other set of pulleys 901 and the second transmission rod 11 to rotate. This causes the first transmission rod 9 and the second transmission rod 11 to rotate in the same direction and at the same speed. During the operation of the spraying device, the tire to be coated rotates, changing the contact area between the tire's inner wall and the paint spray head 15. The electric telescopic mechanism is then activated via the PLC controller 2. The lever 12 pushes the paint nozzle 15 and cleaning brush 18 into the tire. Then, the external material pump is connected to the paint tank. The PLC controller 2 starts the material pump and the paint nozzle 15. The paint nozzle 15 atomizes the paint and sprays it onto the inner wall of the tire. Simultaneously, the PLC controller 2 starts the fan 20, allowing the cleaning brush 18 to directly contact the inner wall of the tire and rotate with the tire, thus cleaning the inner wall during the spraying process. The cleaned dust is then sucked into the dust collection box 19 through the suction pipe 16. The tire is then sprayed with... During the coating process, the surface to be coated is first cleaned by the cleaning brush 18, and then sprayed with a composite layer by the paint head 15. This allows the paint to directly contact the clean rubber surface, preventing the coating from blistering, cracking, or peeling off in large areas due to bumps or flexing during future use. In coordination with the tire rotation speed, the electric telescopic rod 12 moves the paint head 15 to switch to the cleaning brush 18 every certain number of tire rotations, changing the spraying position on the inner wall of the tire and avoiding uneven spraying caused by different contact times between the inner wall of the tire and the paint head 15.

[0021] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A tire inner compound layer spraying apparatus, characterized by: include: A frame (1) is provided, on which a PLC controller (2) is installed. A first drive motor (3) is installed on one side of the frame (1). A bidirectional screw (4) is fixedly connected to the output end of the first drive motor (3). One end of the bidirectional screw (4) is rotatably connected to the inside of the frame (1). Two sets of adjusting blocks (5) are threadedly connected to the bidirectional screw (4). Both sets of adjusting blocks (5) have internal threads. The internal threads of the two sets of adjusting blocks (5) are opposite and match the threads on the bidirectional screw (4). (5) has a symmetrical threaded connection to a positioning rod (6), and a rotating rod (7) is rotatably connected to the positioning rod (6). A second drive motor (8) is installed on one side of the frame (1). A first transmission rod (9) is fixedly connected to the output end of the second drive motor (8). An internal toothed transmission belt (10) is connected to one end of the first transmission rod (9). A second transmission rod (11) is connected to the inner surface of the internal toothed transmission belt (10). A pulley (901) is fixedly connected to one end of both the first transmission rod (9) and the second transmission rod (11).

2. A tire inner composite layer spraying device according to claim 1, characterized in that: The pulley (901) is meshed with the internal toothed drive belt (10) for transmission, and the first drive rod (9) and the second drive rod (11) are both rotatably connected inside the frame (1).

3. A tire inner composite layer spraying device according to claim 1, characterized in that: An electric telescopic rod (12) is installed on one side of the frame (1). A connecting plate (13) is fixedly connected to the telescopic end of the electric telescopic rod (12). A transmission pipe (14) is threaded onto the connecting plate (13). The transmission pipe (14) passes through the frame (1) and is connected to a material pump at one end.

4. The tire inner composite layer spraying device according to claim 3, characterized in that: The other end of the transmission pipe (14) is threaded to a paint spray head (15), and a dust suction pipe (16) is threaded to the connecting plate (13). A dust cover (17) is fixedly connected to one end of the dust suction pipe (16), and a cleaning brush (18) is fixedly connected to one end of the dust suction pipe (16).

5. A tire inner composite layer spraying apparatus according to claim 4, characterized in that: The other end of the suction pipe (16) is threaded to a dust collection box (19), and a filter screen (21) is installed inside the dust collection box (19). A fan (20) is installed on one side of the dust collection box (19).

6. The tire inner composite layer spraying device according to claim 5, characterized in that: The dust collection box (19) has an exhaust vent on one side and a door hinged on the other side. The PLC controller (2) is used to control the start and stop of the first drive motor (3), the second drive motor (8), the electric telescopic rod (12), the paint spray head (15) and the fan (20).

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