Battery box part electrophoretic uniform spraying device

Abstract

This invention relates to the field of surface treatment equipment for new energy battery components, and discloses a uniform electrophoretic spraying device for battery box components. The device includes a vertical linear module, a crossbeam fixedly mounted on the drive end slide of the vertical linear module, a housing fixedly mounted at the end of the crossbeam, a cylinder disposed at the inner bottom of the housing, a central shaft movably mounted in the middle of the cylinder, and an output shaft movably mounted at the inner bottom of the cylinder. The output shaft is connected to the inner end of the central shaft via a torsion beam, a spring fixedly mounted in the middle of the torsion beam, and a rotating disk fixedly mounted at the bottom end of the output shaft extending to the outside of the cylinder. This invention features stable clamping force and strong adaptability. By alternating clamping, it eliminates spraying dead angles. Combining circular motion and oscillating vibration, it improves electrophoretic uniformity and efficiency, reduces coating defects, provides convenient automated operation, and ensures part quality and production stability.

Description

Technical Field

[0001] This invention relates to the field of surface treatment equipment for new energy battery components, specifically to a uniform electrophoretic coating device for battery box components. Background Technology

[0002] In the field of new energy battery manufacturing, the battery box, as the core protective and installation carrier, directly affects the overall safety and service life of the battery pack due to its surface corrosion resistance and insulation performance. Electrophoretic spraying, with its characteristics of uniform coating, strong adhesion, and excellent corrosion resistance, has become the mainstream surface treatment process for battery box components. Currently, the electrophoretic spraying equipment commonly used in the industry mostly uses simple clamping mechanisms to fix the components and then immerse them in the electrophoresis tank. It relies on a single lifting or rotating motion to achieve spraying, and the overall structural design is relatively simple, making it difficult to meet the increasingly higher requirements of the new energy battery industry for the surface treatment precision of components.

[0003] Existing electrophoretic coating equipment suffers from several technical defects: First, the clamping mechanism is poorly designed, often employing rigid clamping or ordinary spring clamping. Rigid clamping can easily damage the surface of parts or result in loose clamping, while ordinary spring clamping is unstable due to the change in elasticity with deformation, making it difficult to maintain a constant clamping force. This can lead to displacement of parts during electrophoresis, affecting the uniformity of coating. Second, clamping areas are prone to forming coating dead zones. In traditional clamping methods, the clamping points of parts are in a fixed state for a long time, and these areas cannot fully contact the electrophoretic solution, resulting in missing coatings or insufficient thickness, requiring subsequent manual repair and increasing production costs. Third, the movement of parts in the electrophoretic solution is limited. Simple lifting or rotation is insufficient to ensure that all parts of the surface are uniformly subjected to the electric field, easily leading to defects such as uneven coating thickness, bubble adhesion, and runoff. At the same time, the electrophoresis efficiency is low under the single movement mode, making it unsuitable for mass production needs.

[0004] With the rapid development of industries such as new energy vehicles and energy storage equipment, the market has placed higher demands on the production efficiency and product quality of battery box components. This requires ensuring the uniformity and integrity of the electrophoretic coating to improve corrosion resistance and insulation performance, optimizing clamping methods to avoid component damage, and simultaneously improving electrophoresis efficiency to reduce production costs. Therefore, developing an electrophoretic coating device for battery box components that features stable clamping, eliminates spraying dead zones, and improves electrophoretic uniformity and efficiency has become an urgent need for the industry. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a uniform electrophoretic coating device for battery box components, which solves the technical problems of unstable clamping force, dead corners in coating, poor coating uniformity, and low electrophoretic efficiency in traditional electrophoretic coating devices.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a battery box component electrophoretic uniform spraying device, comprising a vertical linear module, a crossbeam fixedly mounted on the drive end slide of the vertical linear module, a housing fixedly mounted at the end of the crossbeam, a cylinder provided at the inner bottom of the housing, a central shaft movably mounted in the inner middle of the cylinder, an output shaft movably mounted at the inner bottom of the cylinder, the output shaft being connected to the inner end of the central shaft via a torsion beam, a spring plate fixedly mounted in the middle of the torsion beam, and a rotating disk fixedly mounted at the bottom end of the output shaft extending to the outside of the cylinder.

[0007] Preferably, brackets are fixedly installed at the four corners of the rotating disk, and the ends of the brackets are fixedly installed at the top four corners of the fixed frame. Two first guide rods are fixedly installed on both sides of the inner bottom of the fixed frame. Slider blocks are movably installed on the outer diameters of both sides of the first guide rods. Bending clamps are fixedly installed at the bottom ends of the sliders. Smooth rods are movably installed on both sides of the inner top of the fixed frame. Threaded rods are fixedly installed on the outer diameters of both sides of the smooth rods. The outer diameters of the threaded rods are threaded to the inner side of the movable block. A rotating frame is movably arranged below the movable block. A spring plate is fixedly installed at the bottom end of the movable block, and the ends of the spring plates extend into the interior of the rotating frame on the corresponding side. Pressure rollers are fixedly installed on the inner side of the inner wall of the rotating frame, and the outer ends of the pressure rollers abut against the inner surface of the spring plate on the corresponding side.

[0008] Preferably, a first rotating shaft is movably mounted on the top of the housing, a first motor is fixedly mounted at the middle of the top of the crossbeam, a drive wheel is fixedly mounted on the drive end of the first motor, a driven wheel is fixedly mounted on the top of the first rotating shaft, and the outer diameters of the driven wheel and the drive wheel are connected by a transmission belt.

[0009] Preferably, the bottom end of the first rotating shaft extends into the interior of the housing and is fixedly mounted with an eccentric frame. A second rotating shaft is movably mounted in the middle of the eccentric frame. A transmission gear is fixedly mounted on the outer diameter of the second rotating shaft. An internal gear ring is fixedly mounted in the middle of the housing, and the inner end of the internal gear ring meshes with the outer end of the transmission gear. The bottom end of the internal gear ring is fixedly mounted on the top of the cylinder.

[0010] Preferably, the bottom end of the second rotating shaft extends into the interior of the cylinder and is fixedly mounted with a driving gear. A side shaft is movably mounted on one side of the inner top of the cylinder. A driven gear is fixedly mounted on the outer diameter of the middle part of the side shaft and meshes with the inner end of the driving gear.

[0011] Preferably, a first cam is fixedly installed at the bottom end of the side shaft, a second cam is fixedly installed at the top end of the central shaft, and a rocker arm is movably installed at the end of the second cam, with the end of the rocker arm movably installed at the end of the first cam.

[0012] Preferably, anti-slip strips are fixedly installed on the bottom of the inner end of each of the bending clamps.

[0013] Preferably, a second guide rod is fixedly installed on the inner top of the fixed frame near the two light rods, and the outer diameter of the second guide rod is movably set on the other side of the corresponding movable block.

[0014] Preferably, the inner ends of the rotating frame are movably mounted with connecting rods, and the ends of the connecting rods are movably mounted on the top of the corresponding slider.

[0015] Preferably, worm gears are fixedly installed on the outer diameter of the middle part of the optical rod, and a second motor is fixedly installed at the bottom center of the rotating disk. A worm is fixedly installed on the drive end of the second motor, and the two sides of the worm are respectively meshed with the inner ends of the two worm gears.

[0016] Preferably, an electrophoresis tank is provided on one side of the vertical linear module.

[0017] This invention provides a device for uniform electrophoretic coating of battery box components. It has the following beneficial effects:

[0018] 1. The present invention utilizes the cooperative structure of the spring plate and the pressure roller. The relative sliding generated by the pressure roller when bending the spring plate can dynamically compensate for the change in the elastic force of the spring plate with the degree of bending, so that the elastic force of the spring plate is always uniform and stable. This allows the clamping force of the bending clamp to keep the parts constant, avoiding the displacement of parts due to excessively loose clamping or the deformation of parts due to excessively tight clamping, and effectively protecting the structural integrity of the battery box components.

[0019] 2. This invention uses a second motor to drive the forward and reverse rotation cycle, and two sets of bending clamps on the front and rear sides to achieve alternating clamping. While ensuring that the parts are always stably clamped, the parts that were originally clamped are exposed to the electrophoretic liquid, completely eliminating the spraying dead corners caused by traditional clamping methods, and allowing the electrophoretic coating to be evenly covered on all parts of the surface of the parts.

[0020] 3. In the electrophoresis process of this invention, the components simultaneously undergo two movements: first, a circular motion achieved through eccentric frame transmission, ensuring that all parts of the component surface are uniformly subjected to the electric field; second, a rapid oscillating vibration achieved through a central shaft and torsion beam drive, effectively breaking the adhesion inertia of the electrophoretic liquid on the component surface. The combined effect of these two movements significantly improves the uniformity of the electrophoretic coating, avoiding problems such as uneven coating thickness and missed spraying.

[0021] 4. The rapid oscillating vibration of this invention can not only accelerate the reaction rate between the electrophoretic liquid and the surface of the parts and improve the electrophoresis efficiency, but also effectively remove air bubbles attached to the surface of the parts, avoiding defects such as pinholes and pits in the coating caused by air bubbles; at the same time, it reduces the phenomenon of electrophoretic liquid dripping when the parts are lifted, ensuring uniform coating thickness and reducing the workload of subsequent polishing, repair and other processes. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the shell in this invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the cylinder in this invention;

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic diagram of the fixed frame structure in this invention;

[0027] Figure 6 This is a schematic diagram of the structure of the movable block in this invention;

[0028] Figure 7 for Figure 5 Enlarged view of section B in the middle.

[0029] The components include: 1. Vertical linear module; 2. Horizontal frame; 3. Housing; 4. First rotating shaft; 5. First motor; 6. Driving wheel; 7. Driven wheel; 8. Transmission belt; 9. Cylinder; 10. Eccentric frame; 11. Second rotating shaft; 12. Transmission gear; 13. Internal gear ring; 14. Driving gear; 15. Side shaft; 16. Driven gear; 17. First cam; 18. Central shaft; 19. Second cam; 20. Rocker arm; 21. Input... 21. Output shaft; 22. Torsion beam; 23. Spring piece; 24. Rotating disk; 25. Bracket; 26. Fixed frame; 27. First guide rod; 28. Slider; 29. ​​Bending clamp; 30. Anti-slip strip; 31. Smooth rod; 32. Threaded rod; 33. Movable block; 34. Second guide rod; 35. Rotating frame; 36. Spring plate; 37. Pressure roller; 38. Connecting rod; 39. Worm gear; 40. Second motor; 41. Worm; 42. Electrophoresis tank. Detailed Implementation

[0030] The technical solutions in 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.

[0031] Example:

[0032] Please see the appendix Figure 1 -Appendix Figure 7 This invention provides a device for uniform electrophoretic coating of battery box components, such as... Figure 1As shown, the device includes a vertical linear module 1, which serves as the core of the lifting drive. This module drives the subsequent connected components to achieve stable vertical movement, providing power support for the components to be immersed in the electrophoresis tank 42 or removed from the electrophoresis solution. A crossbeam 2 is fixedly mounted on the drive end slide of the vertical linear module 1. The crossbeam 2 plays a crucial role in connecting the vertical linear module 1 and the housing 3, stably transmitting the driving force of the vertical linear module 1 to the housing 3 and the clamping and transmission mechanisms below, ensuring the synchronization and stability of the overall movement. The housing 3 is fixedly mounted at the end of the crossbeam 2. The housing 3 is the internal... The transmission gear 12, internal gear ring 13, and drive gear 14, among other core transmission components, provide a closed installation space, effectively preventing impurities from the electrophoresis working environment from entering and affecting transmission accuracy. This also protects the internal components. A cylinder 9 is located at the bottom of the housing 3, providing a mounting platform for components such as the central shaft 18, output shaft 21, and torsion beam 22, ensuring orderly movement of each component within the cylinder and enabling synchronous movement with the eccentric frame 10. The central shaft 18 is movably mounted in the center of the cylinder 9. As the core driving component for the oscillating motion, the central shaft 18 can drive the first cam 17, the rocker arm 20, and the... The two cams 19 work together to achieve small-angle reciprocating oscillation, thereby transmitting power to the torsion beam 22. An output shaft 21 is movably mounted on the inner bottom of the cylinder 9. The output shaft 21 connects the torsion beam 22 and the rotating disk 24, converting the torque transmitted by the torsion beam 22 into the oscillation power of the rotating disk 24, while also bearing the weight of the rotating disk 24 and the clamping mechanism below. The output shaft 21 is connected to the inner end of the central shaft 18 via the torsion beam 22. The torsion beam 22 has good elasticity and torque transmission performance, storing torque and transmitting it to the output shaft 21 when the central shaft 18 oscillates. Furthermore, as the deflection speed increases, it can generate a resonant force. The vibration increases the output torque of the output shaft 21 to counteract the load of the electrophoretic liquid. A spring plate 23 is fixedly installed in the middle of the torsion beam 22. The spring plate 23 can help the torsion beam 22 enhance the elastic reset performance, further optimize the stability of torque transmission, and prevent the torsion beam 22 from plastic deformation due to long-term swing. The bottom end of the output shaft 21 extends to the outside of the cylinder 9 and is fixedly installed with a rotating disk 24. The rotating disk 24 serves as an intermediate carrier connecting the output shaft 21 and the fixed frame 26. It can simultaneously bear the installation and power transmission functions of the second motor 40, and can follow the output shaft 21 to achieve a composite motion of circular motion and reciprocating swing.

[0033] In this embodiment, brackets 25 are fixedly installed at each of the four corners of the rotating disk 24. The brackets 25 adopt a high-strength structural design to evenly transmit the movement and supporting force of the rotating disk 24 to the four corners of the fixed frame 26, ensuring that the fixed frame 26 remains horizontal and stable during movement and avoiding component misalignment due to uneven force. The ends of the brackets 25 are fixedly installed at the top four corners of the fixed frame 26. The fixed frame 26 provides an overall mounting frame for the clamping mechanism components such as the first guide rod 27, the guide rod 31, and the movable block 33, integrating each clamping component into a stable functional unit to ensure coordinated and synchronous clamping actions. Two first guide rods 27 are fixedly installed on both sides of the inner bottom of the fixed frame 26. The first guide rods 27 are sliders 28. The sliding mechanism provides precise guidance, restricting the slider 28 to move only in the horizontal direction, preventing it from shifting or jamming during movement, and ensuring the clamping accuracy of the bending clamp 29. Slider 28s are movably mounted on both outer diameters of the first guide rod 27. As an intermediate component connecting the first guide rod 27, the bending clamp 29, and the connecting rod 38, the slider 28 can slide flexibly on the first guide rod 27, simultaneously transmitting the driving force of the rotating frame 35 to the bending clamp 29 to execute the clamping action. The bottom end of each slider 28 is fixedly mounted with a bending clamp 29. The bending clamp 29 adopts a structural design adapted to the shape of the battery box components, with its inner end directly contacting the components. It clamps and releases the components by moving inward or outward, serving as the clamping mechanism. The core actuator, the fixed frame 26, has two movable guide rods 31 mounted on its inner top sides. These guide rods 31, as the core shaft for power transmission, rotate under the drive of the worm gear 39, thereby driving the threaded rods 32 on their outer diameters to rotate synchronously, providing power for the movement of the movable blocks 33. Threaded rods 32 are fixedly mounted on the outer diameters of both sides of the guide rods 31. The threaded rods 32 employ a bidirectional thread design, allowing the rotation of the guide rods 31 to drive the movable blocks 33 on both sides to move in opposite directions, providing a structural basis for the alternating clamping of the front and rear bending clamping rods 29. The outer diameters of the threaded rods 32 are threadedly connected to the inner side of the movable blocks 33. The movable blocks 33, as the intermediate component connecting the threaded rods 32 and the rotating frame 35, can rotate under the drive of the threaded rods 32. The horizontal movement is achieved under the limiting action of the second guide rod 34, and then the power is transmitted to the slider 28 through the rotating frame 35. The rotating frame 35 is movably arranged below each movable block 33. The rotating frame 35 adopts a rotatable linkage structure, which can achieve angular rotation under the push of the movable block 33 and the traction of the connecting rod 38. At the same time, the clamping force is adjusted by the cooperation of the pressure roller 37 and the spring plate 36. The bottom end of each movable block 33 is fixedly installed with a spring plate 36, and the end of each spring plate 36 extends into the interior of the corresponding side rotating frame 35. The spring plate 36 has good elastic deformation capability and can generate elastic recovery force under the extrusion of the rotating frame 35, providing a stable clamping force for the bending clamp 29. Moreover, its elastic characteristics can be dynamically compensated by the sliding of the pressure roller 37.Pressure rollers 37 are fixedly installed on the inner side of the inner wall of the rotating frame 35, and the outer ends of the pressure rollers 37 abut against the inner surface of the corresponding spring plates 36. The pressure rollers 37 can slide along the surface of the spring plates 36 when the rotating frame 35 rotates, dynamically adjusting the lever arm of the spring plates 36 to compensate for changes in their elasticity with the degree of bending, ensuring uniform and stable clamping force.

[0034] Furthermore, a first rotating shaft 4 is movably mounted on the top of the housing 3. This first rotating shaft 4 serves as a power transmission shaft connecting the drive wheel 6 and the eccentric frame 10, transmitting the rotational power of the first motor 5 to the eccentric frame 10, causing it to perform circular motion. The first motor 5 is fixedly mounted at the top center of the crossbeam 2. As one of the power sources for the device's composite motion, the first motor 5 provides stable rotational power, and its forward and reverse rotation cycles adjust the motion of subsequent transmission mechanisms. The drive end of the first motor 5 is fixedly mounted with a drive wheel 6, which is connected to a transmission belt. The driven wheel 7 is fixedly installed at the top of the first shaft 4. The driven wheel 7 receives the power from the driving wheel 6 through the transmission belt 8, which drives the first shaft 4 to rotate synchronously, ensuring the stability and synchronicity of power transmission. The outer diameters of the driven wheel 7 and the driving wheel 6 are connected by the transmission belt 8. The transmission belt 8 is made of high-strength and wear-resistant material, which can achieve efficient power transmission between the driving wheel 6 and the driven wheel 7, and has a certain buffering effect to reduce vibration and noise during transmission.

[0035] Furthermore, the bottom end of the first rotating shaft 4 extends into the interior of the housing 3 and is fixedly mounted with an eccentric frame 10. The eccentric frame 10 adopts an eccentric structure design, which can perform circular motion under the drive of the first rotating shaft 4, thereby driving the cylinder 9, the rotating disk 24 and the lower clamping mechanism to perform circular motion synchronously, providing a motion basis for the uniform electrophoresis of the components. A second rotating shaft 11 is movably mounted in the middle of the eccentric frame 10. The second rotating shaft 11 serves as an intermediate shaft connecting the transmission gear 12 and the drive gear 14. It can rotate under the drive of the transmission gear 12 and simultaneously revolve with the eccentric frame 10. The transmission gear 12 is fixedly mounted on the outer diameter of the second rotating shaft 11. The transmission gear 12 and the inner... The gear ring 13 meshes and rotates during revolution due to the action of the tooth surface of the internal gear ring 13, thereby transmitting power to the second rotating shaft 11. The internal gear ring 13 is fixedly installed in the middle of the housing 3, and the inner end of the internal gear ring 13 is meshed with the outer end of the transmission gear 12. The internal gear ring 13 is fixedly installed, and its inner tooth surface provides a meshing basis for the transmission gear 12. Through the gear meshing relationship, the transmission gear 12 is forced to rotate during revolution, realizing secondary power transmission. The bottom end of the internal gear ring 13 is fixedly installed on the top end of the cylinder 9. This installation method ensures that the internal gear ring 13 and the cylinder 9 form a stable integral structure, avoiding the influence of relative displacement on meshing accuracy during transmission.

[0036] Furthermore, the bottom end of the second rotating shaft 11 extends into the interior of the cylinder 9 and is fixedly mounted with a drive gear 14. The drive gear 14 meshes with the driven gear 16, which can transmit the rotational power of the second rotating shaft 11 to the side shaft 15, thereby realizing the direction of power and speed adjustment. The side shaft 15 is movably mounted on one side of the inner top of the cylinder 9. The side shaft 15 serves as a power shaft connecting the driven gear 16 and the first cam 17, and can transmit the rotational power of the driven gear 16 to the first cam 17, causing the first cam 17 to rotate synchronously. The driven gear 16 is fixedly mounted on the outer diameter of the middle part of the side shaft 15, and the driven gear 16 meshes with the inner end of the drive gear 14. The driven gear 16 receives the power of the drive gear 14 and drives the side shaft 15 to rotate. Through the gear meshing transmission ratio design, it is ensured that the first cam 17 obtains a suitable rotational speed, providing precise power for the swing of the central shaft 18.

[0037] Furthermore, a first cam 17 is fixedly installed at the bottom end of the side shaft 15. The first cam 17 adopts an eccentric wheel structure and can rotate under the drive of the side shaft 15. Through the change of its contour, it drives the rocker arm 20 to reciprocate, thereby driving the second cam 19 to move. The second cam 19 is fixedly installed at the top end of the central shaft 18. The second cam 19 cooperates with the rocker arm 20 to convert the reciprocating swing of the rocker arm 20 into a small-angle reciprocating deflection of the central shaft 18, thereby realizing the transmission of swing power. The rocker arm 20 is movably installed at the end of the second cam 19, and the end of the rocker arm 20 is movably installed at the end of the first cam 17. The rocker arm 20, as a transmission component connecting the first cam 17 and the second cam 19, can convert the rotational motion of the first cam 17 into linear reciprocating motion, thereby driving the second cam 19 to drive the central shaft 18 to swing, ensuring the continuity of power transmission.

[0038] Furthermore, anti-slip strips 30 are fixedly installed on the bottom inner end of the bending clamp 29. The anti-slip strips 30 are made of elastic material with a high coefficient of friction, which can increase the friction between the bending clamp 29 and the surface of the parts, effectively preventing the parts from sliding during clamping or movement, while avoiding direct contact between the bending clamp 29 and the parts, thus ensuring the appearance quality of the parts.

[0039] Furthermore, a second guide rod 34 is fixedly installed on the inner top of the fixed frame 26 near the two light rods 31, and the outer diameter of the second guide rod 34 is movably set on the other side of the corresponding movable block 33. The second guide rod 34 and the threaded rod 32 cooperate to form a bidirectional guide structure, which can restrict the movement direction of the movable block 33, ensure that the movable block 33 can only move smoothly in the horizontal direction, avoid the movable block 33 from twisting or shifting due to the rotation of the threaded rod 32, and ensure the accuracy of the clamping action.

[0040] Furthermore, each inner end of the rotating frame 35 is movably mounted with a connecting rod 38, and the end of each connecting rod 38 is movably mounted on the top of the corresponding side slider 28. As a transmission component connecting the rotating frame 35 and the slider 28, the connecting rod 38 can convert the rotational motion of the rotating frame 35 into the horizontal sliding of the slider 28. At the same time, when the movable block 33 pushes the rotating frame 35 to rotate, the connecting rod 38 pulls the slider 28 to move synchronously, thereby realizing the clamping and releasing action of the bending clamp 29.

[0041] Furthermore, worm gears 39 are fixedly installed on the outer diameter of the middle part of the smooth rod 31. The worm gears 39 mesh with the worm 41 to form a worm gear transmission mechanism, which has the functions of speed reduction and torque increase and self-locking. It can smoothly transmit the power of the second motor 40 to the smooth rod 31, and at the same time ensure that the smooth rod 31 remains fixed when it stops rotating, so as to avoid accidental failure of clamping force. The second motor 40 is fixedly installed at the middle of the bottom end of the rotating disk 24. The second motor 40 serves as the power source of the clamping mechanism and can provide forward and reverse rotation power. By driving the worm 41 to rotate, the clamping force is adjusted and the clamping action is alternated. The drive end of the second motor 40 is fixedly installed with the worm 41, and the two sides of the worm 41 are respectively meshed with the inner ends of the two worm gears 39. The worm 41 adopts a double-headed worm design, which can drive the worm gears 39 on both sides to rotate synchronously, ensuring that the rotation speed and direction of the two smooth rods 31 are completely consistent, thereby realizing the synchronous action of the front and rear side bending clamping rods 29.

[0042] Furthermore, an electrophoresis tank 42 is provided on one side of the vertical linear module 1. The electrophoresis tank 42 is used to hold the electrophoretic liquid and provide working space for the electrophoretic spraying of battery box components. Its size and depth are adapted to the lifting stroke of the device and the specifications of the components, ensuring that the components can be fully immersed in the electrophoretic liquid for uniform spraying. At the same time, the structural design of the electrophoresis tank 42 facilitates the circulation and replacement of the electrophoretic liquid, ensuring the continuity and stability of the electrophoresis operation.

[0043] Working principle:

[0044] The battery box component to be electrophoretically coated, such as the outer shell, is placed inside the bending clamp 29. Then, the second motor 40 is started, driving the worm gear 41 to rotate, which in turn rotates the worm wheels 39 and the guide rod 31 on both sides. The rotation of the guide rod 31 causes the threaded rod 32 on the outer diameter to rotate. Using the limiting effect of the second guide rod 34, the two movable blocks 33 on the front side move inward simultaneously, while the two movable blocks 33 on the rear side move outward synchronously. When the two movable blocks 33 on the front side move inward, they drive the two bending clamps 29 on the front side to move inward synchronously via the rotating frame 35 and the slider 28. Once the inner side of the bending clamp 29 contacts the component, the second motor 40 continues to control the movable blocks 33 to move inward. At this time, the slider 28 will drive the two movable blocks 29 to move inward via the connecting rod 38. When the rotating frame 35 rotates, it bends the spring plate 36 via the pressure roller 37. The elastic force generated by the bent spring plate 36 applies pressure to the slider 28 in the opposite direction, thereby causing the bending clamp 29 to apply clamping force to the part and clamp it tightly. When the pressure roller 37 bends the spring plate 36, it slides relative to the surface of the part, causing the lever arm of the bent spring plate 36 to change continuously. This compensates for the change in elastic force of the spring plate 36 as the degree of bending changes, so that the elastic force generated by the spring plate 36 remains uniform and stable. This also ensures that the bending clamp 29 maintains a stable clamping force on the part. Subsequently, the vertical linear module 1 controls the slide at the drive end to descend, placing the clamped part into the electrophoresis tank 42 and immersing it in the electrophoresis solution to begin electrophoresis spraying. In the electrophoretic coating process, the second motor 40 controls the drive shaft to switch between forward and reverse rotation. When the drive shaft of the second motor 40 reverses, the two bending clamps 29 on the front side move outward to gradually loosen the parts, while the two bending clamps 29 on the rear side move inward to re-clamp the parts. By using the two sets of bending clamps 29 on the front and rear sides to alternately clamp the parts, the parts are kept clamped at all times, and electrophoretic coating can also be performed on the dead corners of the clamping area, improving the coating quality. At the same time, the first motor 5 is started, which drives the drive wheel 6 to rotate. Through the transmission belt 8, the driven wheel 7 and the first rotating shaft 4 are driven to rotate. When the first rotating shaft 4 rotates, it drives the eccentric frame 10 to perform a circular motion. The cylinder 9 and rotating disk 24 drive the fixed frame 26 to move, thereby causing the parts to move in a circular motion within the electrophoresis tank 42. This ensures that all parts of the parts are uniformly subjected to the electric field, improving the uniformity of electrophoresis. Furthermore, when the eccentric frame 10 moves in a circular motion, it drives the transmission gear 12 to move accordingly. The transmission gear 12 meshes with the internal gear ring 13, causing itself to rotate. The rotation of the transmission gear 12 drives the second rotating shaft 11 and the driving gear 14 to rotate. The driving gear 14 drives the driven gear 16 and the side shaft 15 to rotate, thereby causing the first cam 17 to rotate. The rotation of the first cam 17, through the action of the rocker arm 20 and the second cam 19, causes the central shaft 18 to reciprocate at a small angle. Once the central shaft 18 begins to oscillate...The torsion beam 22 is deflected at one end, storing and transmitting torque to the other end. This causes the output shaft 21 and the rotating disk 24 to reciprocate, resulting in a complex motion of circular motion and rapid oscillation within the electrophoresis solution. This significantly improves electrophoresis efficiency and effectively prevents air bubbles from adhering to the surface of the components and prevents dripping after lifting. As the deflection speed of the torsion beam 22 increases, the oscillations at both ends gradually synchronize. The resulting resonance increases the torque output by the output shaft 21, effectively counteracting the load exerted by the electrophoresis solution on the moving components and enhancing the oscillation effect.

[0045] 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 battery box component electrophoretic uniform spraying device, comprising a vertical linear module (1), characterized in that, A crossbeam (2) is fixedly installed on the drive end slide of the vertical linear module (1). A housing (3) is fixedly installed at the end of the crossbeam (2). A cylinder (9) is provided at the bottom of the housing (3). A central shaft (18) is movably installed in the middle of the cylinder (9). An output shaft (21) is movably installed at the bottom of the cylinder (9). The inner end of the output shaft (21) is connected to the inner end of the central shaft (18) through a torsion beam (22). A spring piece (23) is fixedly installed in the middle of the torsion beam (22). The bottom end of the output shaft (21) extends to the outside of the cylinder (9) and a rotating disk (24) is fixedly installed thereon. A bracket (25) is fixedly installed at each of the four corners of the rotating disk (24). The ends of the brackets (25) are fixedly installed at the top four corners of the fixed frame (26). Two first guide rods (27) are fixedly installed on both sides of the inner bottom of the fixed frame (26). Slider blocks (28) are movably installed on the outer diameter of both sides of the first guide rods (27). A bending clamp rod (29) is fixedly installed at the bottom of each slider (28). A smooth rod (31) is movably installed on both sides of the inner top of the fixed frame (26). The outer diameter of the smooth rod (31) is fixedly installed on both sides of the smooth rod (31). A threaded rod (32) is fixedly installed on each of the movable blocks (33). The outer diameter of the threaded rod (32) is threadedly connected to the inner side of the movable block (33). A rotating frame (35) is movably arranged below each movable block (33). A spring plate (36) is fixedly installed at the bottom of each movable block (33), and the end of the spring plate (36) extends into the interior of the rotating frame (35) on the corresponding side. A pressure roller (37) is fixedly installed on the inner side of the inner wall of the rotating frame (35), and the outer end of the pressure roller (37) abuts against the inner surface of the spring plate (36) on the corresponding side.

2. The battery box component electrophoretic uniform spraying device according to claim 1, characterized in that, The top of the housing (3) is movably mounted with a first rotating shaft (4), the top center of the cross frame (2) is fixedly mounted with a first motor (5), the drive end of the first motor (5) is fixedly mounted with a drive wheel (6), the top of the first rotating shaft (4) is fixedly mounted with a driven wheel (7), and the outer diameters of the driven wheel (7) and the drive wheel (6) are connected by a transmission belt (8).

3. The battery box component electrophoretic uniform spraying device according to claim 2, characterized in that, The bottom end of the first rotating shaft (4) extends into the interior of the housing (3) and is fixedly mounted with an eccentric frame (10). The middle part of the eccentric frame (10) is movably mounted with a second rotating shaft (11). A transmission gear (12) is fixedly mounted on the outer diameter of the second rotating shaft (11). An internal gear ring (13) is fixedly mounted in the middle of the inner part of the housing (3), and the inner end of the internal gear ring (13) meshes with the outer end of the transmission gear (12). The bottom end of the internal gear ring (13) is fixedly mounted on the top of the cylinder (9).

4. The battery box component electrophoretic uniform spraying device according to claim 3, characterized in that, The bottom end of the second rotating shaft (11) extends into the interior of the cylinder (9) and is fixedly installed with a drive gear (14). A side shaft (15) is movably installed on one side of the inner top of the cylinder (9). A driven gear (16) is fixedly installed on the outer diameter of the middle part of the side shaft (15), and the driven gear (16) meshes with the inner end of the drive gear (14).

5. The battery box component electrophoretic uniform spraying device according to claim 4, characterized in that, The bottom end of the side shaft (15) is fixedly mounted with a first cam (17), the top end of the central shaft (18) is fixedly mounted with a second cam (19), the end of the second cam (19) is movably mounted with a rocker arm (20), and the end of the rocker arm (20) is movably mounted with the end of the first cam (17).

6. The battery box component electrophoretic uniform spraying device according to claim 1, characterized in that, Anti-slip strips (30) are fixedly installed on the bottom of the inner end of each bending clamp (29).

7. The battery box component electrophoretic uniform spraying device according to claim 1, characterized in that, The inner top of the fixed frame (26) is fixedly installed with a second guide rod (34) on one side near the two light rods (31), and the outer diameter of the second guide rod (34) is movably set on the other side inside the corresponding movable block (33).

8. The battery box component electrophoretic uniform spraying device according to claim 1, characterized in that, The inner end of the rotating frame (35) is movably mounted with a connecting rod (38), and the end of the connecting rod (38) is movably mounted on the top of the corresponding slider (28).

9. The electrophoretic uniform spraying device for battery box components according to claim 1, characterized in that, Worm gears (39) are fixedly installed on the outer diameter of the middle part of the optical rod (31). A second motor (40) is fixedly installed at the middle of the bottom end of the rotating disk (24). A worm (41) is fixedly installed at the drive end of the second motor (40), and the two sides of the worm (41) are respectively meshed with the inner ends of the two worm gears (39).

10. The electrophoretic uniform spraying device for battery box components according to claim 1, characterized in that, An electrophoresis tank (42) is provided on one side of the vertical linear module (1).

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