Paint spraying equipment and method for electric bicycle frame production

Abstract

The invention relates to the technical field of bicycle frame production, in particular to paint spraying equipment and method for electric bicycle frame production, the paint spraying equipment and method for electric bicycle frame production comprise a paint spraying table, fixing plates are symmetrically and fixedly connected to the top of the paint spraying table, and a clamping mechanism is installed in the paint spraying table; the clamping mechanism can effectively conduct accurate clamping according to bicycle frames of different sizes, the production efficiency and the coating quality can be remarkably improved, the pipe diameter, the length and the geometric structure of the bicycle frame are automatically matched through the self-adaptive clamp system, it can be ensured that various bicycle frames are kept in the stable posture in the spraying process, and the spraying quality is improved. And displacement and shaking caused by manual supporting deviation or infirm fixing are avoided, so that the defects of uneven coating thickness, paint leakage and the like are reduced, the deformation risk caused by uneven stress of the frame can be reduced through accurate clamping, the device is especially important to lightweight carbon fiber or special-shaped pipe frames, and the adhesive force and durability of the coating are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bicycle frame manufacturing technology, specifically to a painting equipment and method for producing electric bicycle frames. Background Technology

[0002] Electric bicycle frame painting equipment is an automated or semi-automated industrial device specifically designed for frame surface coating. Its core function is to precisely control paint spraying parameters (such as atomization pressure, spray width, and flow rate) to evenly cover the metal or composite material surface of the frame with paint, forming a protective, decorative, and functional coating. This equipment typically integrates a paint supply system, a spraying unit, an environmental control module (such as temperature / humidity regulation), and an exhaust gas treatment device. It can adapt to the coating needs of different frame materials (such as aluminum alloy and carbon fiber) and supports processes such as multi-color switching and partial masking. Simultaneously, it reduces paint overspray and environmental pollution through negative pressure spray booths or electrostatic adsorption technology, ultimately achieving efficient, stable, and environmentally friendly frame surface treatment results.

[0003] Currently, many bicycle frame painting operations are still mainly done manually. Operators need to hold the spray gun and paint each surface one by one. This not only limits efficiency due to spraying speed and physical strength, but also makes the uniformity of the coating susceptible to human factors (such as hand tremors and fluctuations in spraying distance). At the same time, the existing painting process lacks intelligent clamping systems for different sized frames, relying mostly on simple fixing fixtures or manual support. This makes small-sized frames prone to displacement due to unstable clamping, while large-sized frames may deform due to uneven stress, leading to problems such as coating thickness deviation, paint leakage, or surface defects. It is difficult to meet the precision and yield requirements of mass production.

[0004] Therefore, we propose a painting equipment and method for the production of electric bicycle frames. Summary of the Invention

[0005] The purpose of this invention is to provide a painting equipment and method for producing electric bicycle frames, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a painting equipment and method for producing electric bicycle frames. It includes: a painting station, with fixed plates symmetrically and fixedly connected to the top of the painting station; and a clamping mechanism, which is installed inside the painting station. The clamping mechanism includes telescopic rods, which are symmetrically installed on the inner wall of the painting station. A clamping platform is fixedly connected to the front end of each telescopic rod, and a limit rod is slidably installed inside the top of the clamping platform. A spring is fixedly connected to the outer side of the limit rod.

[0007] Preferably, the spray booth has a sliding groove inside, a bidirectional threaded rod is rotatably installed on the back of the spray booth, sliding blocks are engaged with the outer sides of both ends of the bidirectional threaded rod, and the sliding blocks are slidably connected to the spray booth through the sliding groove. A mounting plate is fixedly connected to the front end of the sliding block, and a connecting plate is fixedly connected to the front end of the mounting plate.

[0008] Preferably, the clamping mechanism further includes a limiting plate. The limiting plate is fixedly connected to the top end of the limiting rod, and a clamping plate is fixedly connected to the other end of the limiting rod. A rotary motor is installed at one end of the bidirectional threaded rod, and the output end of the rotary motor is fixedly connected to the bidirectional threaded rod. The rotary motor drives the bidirectional threaded rod to rotate, causing the meshing sliding block to slide along the sliding groove inside the paint spraying station. Then, the horizontal distance between the two clamping platforms is adjusted by the mounting plate and the connecting plate to initially fit the two ends of the frame. At the same time, the telescopic rod is finely adjusted in front and behind to ensure that the frame is in the optimal painting position. When the clamping plate contacts the surface of the frame, the limiting rod slides along the inside of the top of the clamping platform and compresses the spring. The elastic force generated by the spring limits the sliding stroke of the limiting rod through the limiting plate, forming an adaptive pressure clamping structure, which can not only firmly fix frames of different sizes, but also avoid frame deformation due to uneven force.

[0009] Preferably, a lead screw is rotatably installed inside the bottom of the spray booth, and a meshing block is engaged with the outside of the lead screw. Scrapers are fixedly connected to both ends of the meshing block. Collection ports are opened on both sides of the bottom of the spray booth, and a collection box is installed at the front end of the bottom of the spray booth. The drive motor synchronously drives the turntable, rotating rod, and lead screw to rotate through a belt pulley transmission system. The turntable drives the frame to rotate at a uniform speed, ensuring that the paint sprayed by the nozzle according to the preset parameters can cover the surface of the frame in all directions and evenly, avoiding defects such as uneven coating thickness and paint leakage. The rotating rod drives the partition plate to unfold, dividing the spray booth into a spraying area and a non-spraying area, effectively preventing paint from splashing and contaminating the non-spraying areas. At the same time, the rotation of the lead screw drives the meshing block to drive the scraper to slide along the bottom of the spray booth, scraping the dripping excess paint to the collection ports on both sides.

[0010] Preferably, a rotating rod is rotatably installed between the two fixed plates, a partition plate is fixedly connected to the outside of the rotating rod, a dispensing cylinder is installed on the top of the spray booth, a feed pipe is fixedly connected to the outside of the top of the dispensing cylinder, a transport pipe is fixedly connected to the outside of the bottom of the dispensing cylinder, and a spray nozzle is installed on the top of the inner wall of the spray booth.

[0011] Preferably, the spray booth has turntables symmetrically mounted on both sides, with the front end of each turntable fixedly connected to a telescopic rod. A first pulley is fixedly connected to the other end of each turntable, and a second pulley is mounted at one end of the rotating rod and the lead screw. A connecting belt is mounted on the outer side of the first and second pulleys. A motor bracket is fixedly connected to one side of the spray booth, and a drive motor is mounted on the top of the motor bracket. The output end of the drive motor passes through the inside of the motor bracket and is fixedly connected to the first pulley.

[0012] Preferably, the front end of the spray booth is equipped with a control panel, and both the rotating motor and the drive motor are electrically controlled by the control panel.

[0013] Step 1: Connect the main power supply of the painting equipment and start the self-test program through the control panel to confirm that the rotating motor, drive motor, telescopic rod, nozzle and other components are operating normally. Then, according to the material, size and coating requirements of the vehicle frame to be painted, preset parameters such as nozzle atomization pressure, spray width, paint flow rate, telescopic rod extension stroke and lead screw rotation speed on the control panel. At the same time, inject the corresponding paint into the mixing cylinder and stir for 5-8 minutes to ensure that the paint is evenly mixed before conveying it to the nozzle supply pipeline and expelling the air in the pipeline.

[0014] Step 2: Open the equipment protective door and place the vehicle frame to be painted stably on the clamping area at the top of the paint spray table. Start the clamping mechanism through the control panel. Rotate the motor to drive the bidirectional threaded rod to move the sliding block to adjust the horizontal distance of the clamping table. Fine-tune the front and rear positions of the telescopic rod to make the clamping plate fit against both ends of the vehicle frame. The limit rod achieves adaptive pressure clamping under the elastic force of the spring to prevent the vehicle frame from deforming or shifting. After clamping is completed, start the stability test. Drive the vehicle frame to rotate slowly through the turntable. Stop after confirming that there is no shaking or deviation and maintain the initial spraying posture.

[0015] Step 3: Rotate the lever to unfold the partition plate, dividing the paint booth into a painting area and a non-painting area. Apply masking film to the parts of the frame that do not need to be painted. Then use compressed air to blow away impurities from the frame surface. If there is oil on the surface, wipe it with an environmentally friendly degreaser and dry it to ensure that the frame surface is clean and free of oil and water stains, providing a good foundation for paint adhesion.

[0016] Step 4: Start the spraying program via the control panel. The drive motor drives the turntable, rotating rod, and lead screw to rotate synchronously through the belt pulley transmission structure. The turntable drives the frame to rotate at a uniform speed, the rotating rod drives the partition plate to maintain isolation, and the nozzle sprays paint evenly according to the preset parameters. At the same time, the lead screw drives the meshing block to drive the scraper to slide along the bottom of the spray table, scraping the dripping paint to the recycling port and finally collecting it in the recycling box, realizing the simultaneous operation of spraying and paint recycling.

[0017] Step 5: After the spraying time reaches the preset time, the equipment will automatically stop feeding and rotating. After the spray nozzle stops working, keep the partition plate in the unfolded state and let it stand for 5-10 minutes to allow the coating to initially cure. Then, control the clamping mechanism to release the frame through the control panel, open the protective door, take out the frame and transfer it to the curing area. Dry or naturally cure according to the corresponding paint requirements. At the same time, clean the spray nozzle, dispensing cylinder and recycling box, turn off the equipment power, and complete a single painting operation.

[0018] Compared with the prior art, the beneficial effects of the present invention are: In terms of coating quality, relying on the adaptive clamping mechanism, the spacing can be adjusted by the bidirectional threaded rod, and the position can be finely adjusted by the telescopic rod. Combined with the elastic clamping structure of the limit rod and spring, it can accurately and stably fix the frames of different sizes and materials (including lightweight carbon fiber and irregularly shaped tubing). This avoids displacement and shaking caused by manual support or simple tooling. At the same time, the frame can rotate at a constant speed under the drive of the turntable. Combined with the preset atomization pressure, spray width and flow parameters of the nozzle, it can ensure that the paint evenly covers the surface of the frame, effectively reducing defects such as uneven coating thickness, paint leakage and surface defects, significantly improving coating adhesion and durability, ensuring product coating consistency and meeting the yield requirements of large-scale production.

[0019] In terms of production efficiency, the equipment integrates functions such as parameter preset, automatic clamping, synchronous spraying and recycling, eliminating the need for manual spraying of each surface and frequent adjustment of fixed fixtures, which greatly shortens the painting cycle of a single frame. Furthermore, the operation of each component is centrally controlled through the control panel, reducing the physical exertion and skill threshold of operators and minimizing the impact of human factors on the production rhythm. Compared with traditional manual spraying methods, production efficiency is increased by more than 30%, making it suitable for the needs of mass production of frames.

[0020] In terms of resource utilization and environmental protection, the recycling structure composed of the lead screw, meshing block and scraper at the bottom of the spray booth can scrape the dripping excess paint to the recycling port and collect it into the recycling box in real time, realizing paint recycling and reuse, reducing paint waste rate by 20%-30% and saving production costs; at the same time, the partition plate's partition isolation design can prevent paint splashing, and together with the equipment's built-in exhaust gas treatment module (default adaptation), it reduces paint volatilization and environmental pollutant emissions, meeting environmental protection production standards. Attached Figure Description

[0021] Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is the second schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the clamping mechanism of the present invention; Figure 4 This is one of the structural schematic diagrams of the present invention; Figure 5 This is a second partial structural schematic diagram of the present invention.

[0022] In the diagram: 1. Spray painting station; 2. Fixing plate; 3. Sliding groove; 4. Two-way threaded rod; 5. Sliding block; 6. Mounting plate; 7. Connecting plate; 8. Telescopic rod; 9. Clamping platform; 10. Limiting rod; 11. Spring; 12. Limiting plate; 13. Clamping plate; 14. Rotating motor; 15. Lead screw; 16. Engaging block; 17. Scraper; 18. Recycling port; 19. Recycling box; 20. Rotating rod; 21. Divider plate; 22. Dispensing cylinder; 23. Feed pipe; 24. Transport pipe; 25. Spray nozzle; 26. Turntable; 27. First pulley; 28. Second pulley; 29. ​​Connecting belt; 30. Motor bracket; 31. Drive motor; 32. Control panel. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-5 A painting equipment and method for producing electric bicycle frames, comprising: Spray painting station 1, with fixed plates 2 symmetrically fixedly connected to its top; A clamping mechanism is installed inside the spray booth 1. The clamping mechanism includes a telescopic rod 8. The telescopic rod 8 is symmetrically installed on the inner wall of the spray booth 1. A clamping platform 9 is fixedly connected to the front end of the telescopic rod 8. A limit rod 10 is slidably installed inside the top of the clamping platform 9. A spring 11 is fixedly connected to the outside of the limit rod 10.

[0025] Please see Figure 1-5 The spray booth 1 has a sliding groove 3 inside. A bidirectional threaded rod 4 is rotatably installed on the back of the spray booth 1. Sliding blocks 5 are engaged with the outer sides of both ends of the bidirectional threaded rod 4. The sliding blocks 5 are slidably connected to the spray booth 1 through the sliding groove 3. A mounting plate 6 is fixedly connected to the front end of the sliding block 5. A connecting plate 7 is fixedly connected to the front end of the mounting plate 6.

[0026] Please see Figure 1-5The clamping mechanism also includes a limiting plate 12. The limiting plate 12 is fixedly connected to the top end of the limiting rod 10, and a clamping plate 13 is fixedly connected to the other end of the limiting rod 10. A rotating motor 14 is installed at one end of the bidirectional threaded rod 4, and the output end of the rotating motor 14 is fixedly connected to the bidirectional threaded rod 4. The rotating motor 14 drives the bidirectional threaded rod 4 to rotate, causing the sliding block 5 to slide along the sliding groove 3 inside the paint spraying station 1. Then, the horizontal distance between the two clamping stations 9 is adjusted by the mounting plate 6 and the connecting plate 7, so that it initially fits the two ends of the frame. At the same time, the telescopic rod 8 is finely adjusted in front and behind to ensure that the frame is in the optimal spraying position. When the clamping plate 13 contacts the surface of the frame, the limiting rod 10 slides along the inside of the top end of the clamping station 9 and squeezes the spring 11. The elastic force generated by the spring 11 limits the sliding stroke of the limiting rod 10 through the limiting plate 12, forming an adaptive pressure clamping structure, which can not only firmly fix frames of different sizes, but also avoid frame deformation due to uneven force.

[0027] Please see Figure 1-5 The spray booth 1 has a lead screw 15 rotatably mounted inside its bottom end, and a meshing block 16 is engaged with the outside of the lead screw 15. Scrapers 17 are fixedly connected to both ends of the meshing block 16. Collection ports 18 are opened on both sides of the bottom end of the spray booth 1, and a collection box 19 is installed at the front end of the bottom of the spray booth 1. The drive motor 31 synchronously drives the turntable 26, the rotating rod 20, and the lead screw 15 to rotate through the belt pulley transmission system. The turntable 26 drives the frame to rotate at a uniform speed, ensuring that the paint sprayed by the nozzle 25 according to the preset parameters can cover the surface of the frame in all directions and evenly, avoiding defects such as uneven coating thickness and paint leakage. The rotating rod 20 drives the partition plate 21 to unfold, dividing the spray booth 1 into a spraying area and a non-spraying area, effectively preventing paint from splashing and contaminating the non-spraying areas. At the same time, the rotation of the lead screw 15 drives the meshing block 16 to drive the scraper 17 to slide along the bottom end of the spray booth 1, scraping the excess paint dripping to the collection ports 18 on both sides.

[0028] Please see Figure 1-5 A rotating rod 20 is rotatably installed between the two fixed plates 2. A partition plate 21 is fixedly connected to the outside of the rotating rod 20. A dispensing cylinder 22 is installed on the top of the spray booth 1. A feed pipe 23 is fixedly connected to the outside of the top of the dispensing cylinder 22. A transport pipe 24 is fixedly connected to the outside of the bottom of the dispensing cylinder 22. A spray nozzle 25 is installed on the top of the inner wall of the spray booth 1.

[0029] Please see Figure 1-5The spray booth 1 has symmetrically rotating turntables 26 installed on both sides. The front end of the turntable 26 is fixedly connected to the telescopic rod 8. The other end of one turntable 26 is fixedly connected to a first pulley 27. A second pulley 28 is installed at one end of the rotating rod 20 and the lead screw 15. A connecting belt 29 is installed on the outside of the first pulley 27 and the second pulley 28. A motor bracket 30 is fixedly connected to one side of the spray booth 1. A drive motor 31 is installed on the top of the motor bracket 30, and the output end of the drive motor 31 passes through the inside of the motor bracket 30 and is fixedly connected to the first pulley 27.

[0030] Please see Figure 1-5 The front end of the spray painting station 1 is equipped with a control panel 32, and the rotating motor 14 and the drive motor 31 are both electrically controlled by the control panel 32.

[0031] A painting method for manufacturing electric bicycle frames includes the following steps: Step 1: Connect the main power supply of the spray painting equipment and start the self-test program through the control panel 32 to confirm that the rotating motor 14, drive motor 31, telescopic rod 8, nozzle 25 and other components are operating normally. Then, according to the material, size and coating requirements of the vehicle frame to be painted, preset parameters such as the atomization pressure of the nozzle 25, spray width, paint flow rate, telescopic rod 8 extension stroke and lead screw 15 rotation speed on the control panel 32. At the same time, inject the corresponding paint into the mixing cylinder 22 and stir for 5-8 minutes to ensure that the paint is evenly mixed before conveying it to the supply pipeline of the nozzle 25 and expelling the air in the pipeline.

[0032] Step 2: Open the equipment protective door and place the vehicle frame to be painted stably on the top clamping area of ​​the paint spraying table 1. Start the clamping mechanism through the control panel 32. Rotate the motor 14 to drive the bidirectional threaded rod 4 to drive the sliding block 5 to adjust the horizontal distance of the clamping table 9. The telescopic rod 8 is finely adjusted to make the clamping plate 13 fit against both ends of the vehicle frame. The limit rod 10 achieves adaptive pressure clamping under the elastic force of the spring 11 to prevent the vehicle frame from deforming or shifting. After clamping is completed, start the stability test. Drive the vehicle frame to rotate slowly through the turntable 26. Stop after confirming that there is no shaking or deviation and maintain the initial spraying posture.

[0033] Step 3: Rotate the lever 20 to unfold the partition plate 21, dividing the paint booth 1 into a painting area and a non-painting area. Apply masking film to the parts of the frame that do not need to be painted. Then use compressed air to blow away impurities from the frame surface. If there is oil on the surface, wipe it with an environmentally friendly degreaser and dry it to ensure that the frame surface is clean and free of oil and water stains, providing a good foundation for paint adhesion.

[0034] Step 4: Start the spraying program via the control panel 32. The drive motor 31 drives the turntable 26, rotating rod 20 and lead screw 15 to rotate synchronously through the belt pulley transmission structure. The turntable 26 drives the frame to rotate at a uniform speed, the rotating rod 20 drives the partition plate 21 to maintain isolation, and the nozzle 25 sprays paint evenly according to the preset parameters. At the same time, the lead screw 15 drives the meshing block 16 to drive the scraper 17 to slide along the bottom of the spray table 1, scraping the dripping paint to the recycling port 18, and finally collecting it into the recycling box 19, so as to realize the simultaneous operation of spraying and paint recycling.

[0035] Step 5: After the preset spraying time is reached, the equipment automatically stops feeding and rotating. After the spray nozzle 25 stops working, keep the partition plate 21 in the unfolded state and let it stand for 5-10 minutes to allow the coating to initially cure. Then, control the clamping mechanism to release the carriage through the control panel 32, open the protective door, take out the carriage, and transfer it to the curing area. Dry or allow it to cure naturally according to the corresponding paint requirements. At the same time, clean the spray nozzle 25, the dispensing cylinder 22, and the recycling box 19. Turn off the equipment power to complete a single painting operation. Working principle: After the equipment is started, the main power is first connected and the system self-check is completed through the control panel 1 at the front of the spray booth to ensure that key components such as the rotating motor 2, drive motor 3, telescopic rod 4, nozzle 5, and lead screw 6 are free from jamming and malfunction. Then, according to the material, size and coating requirements of the vehicle frame to be treated, the operator presets various core parameters on the control panel 1, including the atomization pressure, spray width and paint flow of nozzle 5, the extension stroke of telescopic rod 4, the rotation speed of bidirectional threaded rod 7 and the scraping frequency of lead screw 6, etc. At the same time, the corresponding paint is injected into the mixing cylinder 8 and the built-in stirring device 9 is started. After 5-8 minutes of thorough stirring, the uniform and sediment-free paint is transported to the nozzle 5 supply pipeline 11 through the transport pipe 10 and the air in the pipeline 11 is purged to avoid the problem of material interruption or air bubbles during spraying. During the frame clamping stage, the operator places the frame to be painted on the top center area of ​​the paint station 12, and then activates the clamping mechanism 13 through the control panel 1. The rotating motor 2 drives the bidirectional threaded rod 7 to rotate, causing the meshing sliding block 14 to slide along the sliding groove 15 inside the paint station 12. Then, the horizontal distance between the two clamping platforms 18 is adjusted by the mounting plate 16 and the connecting plate 17 to make them initially fit the two ends of the frame. At the same time, the telescopic rod 4 is finely adjusted in front and behind to ensure that the frame is in the optimal painting position. When the clamping plate 19 contacts the surface of the frame, the limiting rod 20 moves along the inside of the top of the clamping platform 18. Sliding and squeezing the spring 21, the elastic force generated by the spring 21 limits the sliding stroke of the limiting rod 20 through the limiting plate 22, forming an adaptive pressure clamping structure. This structure can not only firmly fix frames of different sizes, but also avoid frame deformation due to uneven force. It is especially suitable for lightweight carbon fiber or irregularly shaped tubular frames. After clamping, the drive motor 3 drives the second pulley 25 to rotate through the first pulley 23 and the connecting belt 24, which in turn drives the turntable 26 to rotate slowly. Simultaneously, it drives the telescopic rod 4 and the clamped frame to perform stability testing. After confirming that there is no shaking or deviation, it maintains the initial spraying posture. After entering the spraying stage, the drive motor 3 synchronously drives the turntable 26, the rotating rod 28 and the lead screw 6 through the belt pulley transmission system 27. The turntable 26 drives the frame to rotate at a uniform speed, ensuring that the paint sprayed by the nozzle 5 according to the preset parameters can cover the surface of the frame in all directions and evenly, avoiding defects such as uneven coating thickness and paint leakage. The rotating rod 28 drives the partition plate 29 to unfold, dividing the paint station 12 into a spraying area and a non-spraying area, effectively preventing paint from splashing and contaminating the non-spraying areas. At the same time, the lead screw 6 rotates to drive the meshing block 30 to drive the scraper 31 to slide along the bottom of the paint station 12, scraping the dripping excess paint to the recycling ports 32 on both sides, and finally collecting it into the recycling box 33 at the bottom to achieve resource recycling and reuse.After the spraying operation reaches the preset time, the equipment automatically stops feeding and rotating, and keeps the partition plate 29 in the unfolded state for 5-10 minutes to allow the coating to initially cure. Then, the clamping mechanism 13 is controlled to reverse through the control panel 1 to release the carriage. The operator opens the protective door 34 to remove the carriage and transfer it to the curing area 35 for subsequent drying or natural curing. At the same time, the spray nozzle 5, the dispensing cylinder 8 and the recycling box 33 are cleaned, and the equipment power is turned off. The entire working process is controlled by the control panel 1 to centrally control the operating rhythm of each component, forming an automated closed loop of "parameter preset - self-test adaptation - precise clamping - rotary spraying - synchronous recycling - curing and picking up parts". This not only greatly improves the spraying efficiency and coating quality, but also reduces human error and resource waste, meeting the requirements of large-scale production for precision, stability and environmental protection.

[0036] 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.

[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A painting equipment and method for producing electric bicycle frames, characterized in that, include: A spray painting station (1) is provided, with fixed plates (2) symmetrically fixedly connected to the top of the spray painting station (1); The clamping mechanism is installed inside the spray painting station (1). The clamping mechanism includes a telescopic rod (8). The telescopic rod (8) is symmetrically installed on the inner wall of the spray painting station (1). The front end of the telescopic rod (8) is fixedly connected to a clamping platform (9). A limit rod (10) is slidably installed inside the top of the clamping platform (9). A spring (11) is fixedly connected to the outside of the limit rod (10).

2. The painting equipment for producing electric bicycle frames according to claim 1, characterized in that: The spray booth (1) has a sliding groove (3) inside. A two-way threaded rod (4) is rotatably installed on the back of the spray booth (1). Sliding blocks (5) are engaged on the outer sides of both ends of the two-way threaded rod (4). The sliding blocks (5) are slidably connected to the spray booth (1) through the sliding groove (3). A mounting plate (6) is fixedly connected to the front end of the sliding block (5). A connecting plate (7) is fixedly connected to the front end of the mounting plate (6).

3. The painting equipment for producing electric bicycle frames according to claim 1, characterized in that: The clamping mechanism also includes a limiting plate (12), the top end of the limiting rod (10) is fixedly connected to the limiting plate (12), the other end of the limiting rod (10) is fixedly connected to a clamping plate (13), one end of the bidirectional threaded rod (4) is equipped with a rotating motor (14), and the output end of the rotating motor (14) is fixedly connected to the bidirectional threaded rod (4).

4. The painting equipment for producing electric bicycle frames according to claim 1, characterized in that: The bottom end of the spray painting station (1) is rotatably installed with a lead screw (15), and a meshing block (16) is engaged with the outside of the lead screw (15). Scrapers (17) are fixedly connected to both ends of the meshing block (16). Recycling ports (18) are opened on both sides of the bottom end of the spray painting station (1), and a recycling box (19) is installed at the front end of the bottom of the spray painting station (1).

5. The painting equipment for producing electric bicycle frames according to claim 1, characterized in that: A rotating rod (20) is rotatably installed between the two fixed plates (2). A partition plate (21) is fixedly connected to the outside of the rotating rod (20). A dispensing cylinder (22) is installed on the top of the spray booth (1). A feed pipe (23) is fixedly connected to the outside of the top of the dispensing cylinder (22). A transport pipe (24) is fixedly connected to the outside of the bottom of the dispensing cylinder (22). A spray nozzle (25) is installed on the top of the inner wall of the spray booth (1).

6. The painting equipment for producing electric bicycle frames according to claim 1, characterized in that: The spray booth (1) has turntables (26) symmetrically mounted on both sides. The front end of the turntable (26) is fixedly connected to the telescopic rod (8). The other end of one turntable (26) is fixedly connected to a first pulley (27). The rotating rod (20) and the lead screw (15) are connected to a second pulley (28). The first pulley (27) and the second pulley (28) are connected to a connecting belt (29). The spray booth (1) has a motor bracket (30) fixedly connected to one side. The top of the motor bracket (30) is equipped with a drive motor (31), and the output end of the drive motor (31) passes through the inside of the motor bracket (30) and is fixedly connected to the first pulley (27).

7. The painting equipment for producing electric bicycle frames according to claim 1, characterized in that: The front end of the spray booth (1) is equipped with a control panel (32), and the rotating motor (14) and the drive motor (31) are both electrically controlled by the control panel (32).

8. A painting method for producing an electric bicycle frame based on claims 1 to 7 includes the following steps: Step 1: Connect the main power supply of the painting equipment and start the self-test program through the control panel (32) to confirm that the rotating motor (14), drive motor (31), telescopic rod (8), nozzle (25) and other components are operating normally. Then, according to the material, size and coating requirements of the car frame to be painted, preset parameters such as the atomization pressure of the nozzle (25), spray width, paint flow rate, telescopic rod (8) extension stroke, and screw (15) rotation speed on the control panel (32). At the same time, inject the corresponding paint into the mixing cylinder (22) and stir for 5-8 minutes to ensure that the paint is mixed evenly and then transported to the nozzle (25) supply pipeline to expel the air in the pipeline. Step 2: Open the protective door of the equipment and place the car frame to be painted stably on the top clamping area of ​​the spray table (1). Start the clamping mechanism through the control panel (32), rotate the motor (14) to drive the bidirectional threaded rod (4) to drive the sliding block (5) to adjust the horizontal distance of the clamping table (9), and finely adjust the front and rear position of the telescopic rod (8) so that the clamping plate (13) fits against both ends of the car frame. The limit rod (10) achieves adaptive pressure clamping under the elastic force of the spring (11) to avoid deformation or displacement of the car frame. After clamping is completed, start the stability test. Drive the car frame to rotate slowly through the turntable (26). Stop and maintain the initial spraying posture after confirming that there is no shaking or deviation. Step 3: Rotate the lever (20) to unfold the partition plate (21), dividing the paint booth (1) into a spraying area and a non-spraying area. Apply masking film to the parts of the frame that do not need to be sprayed. Then use compressed air to blow away impurities from the frame surface. If there is oil on the surface, wipe it with an environmentally friendly degreaser and dry it to ensure that the frame surface is clean and free of oil and water stains, providing a good foundation for paint adhesion. Step 4: Start the spraying program through the control panel (32). The drive motor (31) drives the turntable (26), rotating rod (20) and lead screw (15) to rotate synchronously through the belt pulley transmission structure. The turntable (26) drives the frame to rotate at a constant speed. The rotating rod (20) drives the partition plate (21) to maintain the isolation state. The nozzle (25) sprays the paint evenly according to the preset parameters. At the same time, the lead screw (15) drives the meshing block (16) to drive the scraper (17) to slide along the bottom of the spray table (1) to scrape the dripping paint to the recycling port (18) and finally collect it into the recycling box (19), so as to realize the simultaneous spraying and paint recycling. Step 5: After the spraying reaches the preset time, the equipment will automatically stop feeding and rotating. After the nozzle (25) stops working, keep the partition plate (21) in the unfolded state and let it stand for 5-10 minutes to allow the coating to initially cure. Then, control the clamping mechanism to release the frame through the control panel (32), open the protective door to take out the frame and transfer it to the curing area. Dry or cure naturally according to the corresponding coating requirements. At the same time, clean the nozzle (25), the dispensing cylinder (22) and the recycling box (19), turn off the equipment power, and complete a single painting operation.

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