An automatic conveying device based on plate spring paint spraying

Abstract

The application discloses a kind of automatic conveying device based on plate spring paint spraying, it is related to plate spring electrophoresis paint spraying conveying processing field, including conveying frame, conveying belt, dismounting frame, tow carrier and power component, conveying belt bottom can be disassembled and assembled dismounting frame, tow carrier both ends are equipped with half-arc sleeve that wraps plate spring eye, inclined guide surface, half-arc sleeve bottom is equipped with wave-shaped guide groove, groove bottom capsule is connected, cavity is equipped with poking body, liquid flow along guide groove variable-speed flow extrusion capsule shrink, linkage poking body pushes inclined guide surface dynamic adjustment plate spring angle of placement, half-arc sleeve is equipped with flow guide edge and liquid inlet guide hole, guarantee eye fully electrophoresis;The application realizes workpiece posture self-adaptive adjustment by electrophoretic liquid flow, without additional driving element, electrophoresis has no dead angle, paint film is uniform, tool dismounting is convenient, and electrophoretic liquid can be recycled, and automation linkage is strong, operation is coherent and efficient, reduce production cost, adapt to multi-specification plate spring mass production electrophoresis paint spraying.

Description

Technical Field

[0001] This invention relates to the field of automated conveying and processing technology for leaf spring painting, specifically an automated conveying device based on leaf spring painting. Background Technology

[0002] As a core load-bearing component of vehicle suspension, leaf springs are used for a long time in environments with mud, rainwater, and acid and alkali corrosive media. The protective paint film formed by electrophoretic spraying on the surface directly determines the rust resistance and service life of the leaf spring. The electrophoretic process is a key step in leaf spring processing.

[0003] Currently, most leaf spring electrophoresis conveying fixtures in the industry adopt a fixed support structure, relying solely on simple brackets to support the entire leaf spring. The curved surface of the leaf spring and the posture of the rolled ears at both ends are fixed throughout the process, resulting in several production pain points: When conventional conveying fixtures are immersed in the curved section of the electrophoresis tank, the electrophoretic solution can only wash one side of the leaf spring surface, and the thickness of the paint film on the upper and lower areas of the curved surface varies greatly, making the surface prone to defects such as exposed substrate, pinholes, and runs; After the leaf spring rolled ears are locked, air and liquid accumulate in the inner cavity, making it difficult for the electrophoretic solution to fully contact the inner wall of the rolled ears, and the anti-corrosion layer at the root of the rolled ears is missing, making it prone to rust and breakage after long-term use.

[0004] Existing conveyor fixtures and conveyor belts are mostly welded as a single structure. When changing leaf springs of different lengths and curvatures, the entire fixture must be disassembled, which is cumbersome and significantly reduces changeover efficiency. The fixture lacks a lateral limiting structure, causing it to shift left and right when the conveyor belt is running at high speed, resulting in leaf springs colliding and scratching the workpiece surface. At the same time, traditional fixtures lack a self-adjusting structure, making it impossible to dynamically adjust the leaf spring placement angle according to the flow rate of the electrophoresis solution. They can only rely on extending the electrophoresis immersion time to improve the uniformity of the paint film, which lengthens the production cycle of a single batch, resulting in high energy consumption and production costs. Conventional conveying equipment lacks a fluid flow linkage adjustment mechanism, requiring the addition of cylinders and micro motors to adjust the leaf spring posture, resulting in complex equipment structures and high failure rates. The fixture lacks a glaze / electrophoresis solution guiding and recovery structure, causing excess electrophoresis solution to accumulate inside the fixture. After solidification, it is difficult to clean, and long-term use affects the electrophoresis quality of the workpiece. Therefore, we propose an automated conveying device based on leaf spring painting. Summary of the Invention

[0005] The purpose of this invention is to provide an automated conveying device based on leaf spring painting to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automated conveying device based on leaf spring painting, comprising a conveying frame, a curved section suitable for electrophoresis on the conveying frame, a limiting groove frame at the lower part of the conveying frame, a conveyor belt adapted to the conveying frame distributed within the limiting groove frame, multiple mounting holes distributed at the lower part of the conveyor belt according to the conveying pattern, and a disassembly frame installed at the mounting holes, and a power component for driving the conveyor belt provided on the outer side of the conveying frame; multiple carriers for placing leaf springs are assembled on the disassembly frame, and both ends of the carriers are provided with... The device has a semi-circular sleeve that wraps around the leaf spring's coiled part. The middle part of the carrier has an inclined guide surface for placing the curved plate of the leaf spring. The inclined guide surface is made of a corrosion-resistant thin sheet. The bottom of the semi-circular sleeve has a guide groove. The carrier has a placement cavity with actuating bodies distributed in the placement cavity. The actuating bodies are attached to the back of the inclined guide surface in the middle. At both ends of the placement cavity, there are capsules that connect to the bottom of the guide groove. The two ends of the actuating bodies are connected to the capsules. The electrophoretic liquid flows along the guide groove, causing the capsules to contract, thereby causing the actuating bodies to actuate the inclined guide surface.

[0007] Preferably, the guide groove is wavy, the capsule is integrally formed with the bottom of the guide groove, and the capsule is inclined. The electrophoretic liquid flows and is discharged along the wavy track of the guide groove at varying speeds. The electrophoretic liquid flowing at varying speeds causes the capsule to contract and deform.

[0008] Preferably, the actuating body includes an actuating crank disposed in the placement cavity. The actuating crank has a contact block in the middle, and the contact block is in contact with the back of the inclined guide surface. The two ends of the actuating crank are connected to hinge seats, and the hinge seats are connected to the outside of the capsule. When the variable-speed flowing electrophoretic liquid causes the capsule to contract and deform, it drives the actuating crank to squeeze the inclined guide surface in the placement cavity, so as to change the position of the arc-shaped plate on the inclined guide surface according to the flow rate of the electrophoretic liquid.

[0009] Preferably, a torsion spring is fixed to the back of the touch block, and one end of the torsion spring is connected to the inner wall of the placement cavity.

[0010] Preferably, the top and bottom of the guide groove are provided with guide slopes, and the sides of the guide groove are provided with overflow edges.

[0011] Preferably, the upper part of the semi-circular sleeve is thicker than the lower part, the upper part of the semi-circular sleeve is extensible, and the semi-circular sleeve is provided with multiple liquid inlet guide holes, and the outer edge of the semi-circular sleeve is provided with a flow guide edge.

[0012] Preferably, the disassembly frame includes a fixed horizontal plate, a threaded post is installed on the top of the fixed horizontal plate, the threaded post is threadedly connected to the mounting hole at the bottom of the conveyor belt, two rows of vertical plates are installed at the bottom of the fixed horizontal plate, and multiple sets of disassembly holes are opened on the vertical plates. Fixed posts fixed in the disassembly holes are installed on the back of both ends of the carrier.

[0013] Preferably, the outer side of the conveying frame is provided with a guide groove, and two connecting rods are installed on the fixed horizontal plate, with one end of the two connecting rods connected to a limiting guide wheel, and the two limiting guide wheels slide in the guide groove.

[0014] Preferably, the top of the conveyor belt is equipped with a protrusion that slides within a limiting groove, the inner ring of the conveyor belt is provided with a toothed belt, the power component includes a drive motor, the bottom of the drive motor is fixed in the installation position, and the output end of the drive motor is equipped with a drive gear that meshes with the toothed belt.

[0015] Preferably, a plurality of mounting frames are installed on the conveying frame, a rotating shaft is rotatably installed in the mounting frame, and a balance gear that meshes with the toothed belt is installed at the bottom of the rotating shaft. A column fixed to the mounting position is installed on the top of the conveying frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention relies on the curved section of the conveying frame for electrophoresis operation, and coordinates with the guide tank, the capsule, and the actuating body. The capsule contracts and deforms due to changes in the flow velocity of the electrophoretic liquid, simultaneously driving the actuating body to reciprocate and dynamically shift the tilted guide surface. This allows the immersion angle of the curved leaf spring surface to adaptively adjust with the flow rate of the electrophoretic liquid, eliminating the need for additional drive and adjustment components. The structure is simple and highly interconnected, ensuring full contact of the curved leaf spring surface with the electrophoretic liquid at multiple angles, eliminating dead zones, effectively solving problems such as uneven paint film thickness and undercoat drips, and significantly improving the quality of the finished electrophoretic painted leaf spring. The leaf spring conveying and electrophoresis posture adjustment are completed simultaneously, eliminating the need for mid-process stops to adjust the workpiece. This continuous operation significantly shortens the processing time for a single batch and is suitable for large-scale continuous production lines for leaf springs.

[0017] 2. This invention features a semi-circular sleeve that wraps around the leaf spring lug, along with a guide edge and multiple sets of liquid inlet holes. The electrophoretic liquid can completely wrap around the lug along the guide edge and continuously flush the inner cavity of the lug through the liquid inlet holes, expelling accumulated air and ensuring a complete and uniform paint film on the inner and outer walls of the lug, thus solving the industry pain point of weak corrosion resistance in lugs. The semi-circular sleeve is thicker at the top and thinner at the bottom, and the upper part is extensible, making it suitable for leaf spring lugs of various outer diameters. This enhances the versatility of the tooling. The modular disassembly and assembly structure with upper and lower layers allows for quick disassembly and assembly of the disassembly frame via threaded posts and the conveyor belt. The carrier can be independently disassembled by inserting the disassembly hole into the fixed post. When changing leaf springs of different specifications, only the corresponding carrier needs to be replaced, simplifying the changeover process. The limiting guide wheel and guide groove, along with the conveyor belt protrusion and limiting groove frame, form a double limiting structure, preventing the tooling from shifting left or right during the conveying process and avoiding collisions and scratches between the leaf springs.

[0018] 3. The wave-shaped guide groove of this invention, along with the guide slope and overflow edge, reduces the flow resistance of the electrophoretic liquid and guides excess electrophoretic liquid back into the electrophoresis tank, reducing the accumulation of electrophoretic liquid. The inner ring toothed belt of the conveyor belt is equipped with multiple sets of balanced gears for meshing transmission, combined with a flywheel transmission structure, ensuring smooth and vibration-free conveyor belt operation. The impact force of the liquid flow in the curved section is stable, and the posture adjustment action is continuous. The torsion spring on the back of the contact block can automatically reset and actuate the crank after the impact force of the liquid flow weakens, realizing the small reciprocating swing of the inclined guide surface, further improving the uniformity of electrophoresis on the plate surface. The tooling has excellent overall corrosion resistance, and excess electrophoretic liquid can be recycled and reused, reducing raw material production costs. The equipment has a high degree of automation, reducing manual intervention and the labor intensity of operators, and is suitable for large-scale leaf spring electrophoretic painting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of a partial explosion structure of the present invention; Figure 3 This is a schematic diagram of the structure after a partial cross-section of the transport frame; Figure 4 This is a structural diagram of the conveyor belt and power components; Figure 5 for Figure 4 A schematic diagram of the structure viewed from below; Figure 6 A schematic diagram of the structure of the drag carrier mounted on the leaf spring workpiece; Figure 7 A schematic diagram of the structure at the disassembly and assembly point of the frame and the towing carrier; Figure 8 This is a schematic diagram of a single towing carrier structure; Figure 9 This is a schematic diagram of the structure of the towing vehicle after partial cross-section. Figure 10 This is a structural diagram of the disassembly and assembly frame. Figure 11 This is a schematic diagram of the structure of the actuating component.

[0020] In the diagram: 1. Conveying frame; 2. Conveying belt; 3. Disassembly frame; 4. Power unit; 5. Carrier; 6. Semi-arc sleeve; 7. Actuating body; 8. Bag; 11. Bending section; 12. Limiting groove frame; 13. Guide groove; 14. Mounting frame; 15. Column; 21. Mounting hole; 22. Protrusion; 23. Toothed belt; 31. Fixed horizontal plate; 32. Threaded column; 33. Vertical plate; 34. Disassembly hole; 35. Fixed column; 36. Connecting rod; 37. Limiting guide wheel; 41. Drive motor; 42. Drive gear; 43. Rotating shaft; 44. Balance gear; 45. Drive flywheel; 46. Driven flywheel; 47. Transmission belt; 51. Inclined guide surface; 52. Placement cavity; 61. Guide groove; 62. Guide slope; 63. Overflow edge; 64. Liquid inlet guide hole; 65. Flow guide edge; 71. Actuating crank; 72. Contact block; 73. Hinge seat; 74. Torsion spring. Detailed Implementation

[0021] 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.

[0022] This invention provides a technical solution: an automated conveying device based on leaf spring painting. This automated conveying device mainly consists of a conveying frame 1, a conveyor belt 2, a disassembly frame 3, a drag carrier 5, a semi-arc sleeve 6, a toggle body 7, a bladder 8, and a power component 4. The entire device adopts a closed-loop conveying structure. The integrally formed curved section 11 of the conveying frame 1 serves as the electrophoresis work station. When the tooling moves cyclically with the conveyor belt 2 to the curved section 11, it is completely immersed in the electrophoresis liquid. The internal adjustment structure is driven by the liquid flow of the electrophoresis liquid to change the placement posture of the leaf spring. The entire device is modularly assembled, easy to disassemble and assemble, and provides stable conveying. It can simultaneously complete the entire process of leaf spring conveying, adaptive posture adjustment, and electrophoretic painting.

[0023] The conveyor frame 1 serves as the load-bearing base for the entire equipment. Multiple vertical columns 15 are fixed to the top of the conveyor frame 1, and the bottom of the columns 15 are locked to the workshop base for stable hoisting of the entire equipment. The middle section of the conveyor frame 1 features a one-piece, downward-bending curved section 11, which is entirely submerged below the surface of the electrophoresis tank, serving as the core operating area for leaf spring electrophoresis. The remaining straight sections correspond to loading / unloading and draining / transfer stations. A through-type limiting groove 12 is provided inside the lower side of the conveyor frame 1, with the internal width of the limiting groove 12 matching the width of the conveyor belt 2. The conveyor frame 1 is equipped with a guide groove 13 on the outside of the conveyor frame 1 along the conveying direction to cooperate with the limit guide wheel 37 to achieve lateral limit of the tooling; multiple sets of mounting frames 14 are fixed at intervals along the conveying path of the conveyor frame 1, and a rotating shaft 43 is mounted inside each mounting frame 14. The lower end of the rotating shaft 43 is fixed with a balance gear 44. The multiple sets of balance gears 44 evenly support the toothed belt 23 of the conveyor belt 2, disperse the running load of the conveyor belt, avoid the middle of the conveyor belt from sagging and jamming, and ensure that the conveying speed of the curved section 11 is uniform and stable.

[0024] The conveyor belt 2 is a closed-loop circulating conveyor. The top of the conveyor belt 2 has an integrally formed protrusion 22, which slides and is limited inside the limiting groove frame 12, and cooperates with the limiting groove frame 12 to limit the vertical displacement of the conveyor belt. The inner ring of the conveyor belt 2 has an integrally formed continuous toothed belt 23, which meshes with the drive gear 42 and the balance gear 44 to transmit power. The bottom of the conveyor belt 2 has multiple sets of threaded mounting holes 21 equidistantly opened along the conveying direction. The mounting holes 21 are used for quick assembly and disassembly of the frame 3. The number of tooling can be increased or decreased according to production needs to adapt to different production capacity requirements.

[0025] The disassembly frame 3 is an independent, detachable tooling base. The disassembly frame 3 includes a fixed horizontal plate 31, with threaded posts 32 vertically welded to the top surface of the fixed horizontal plate 31. The threaded posts 32 are screwed downwards into the mounting holes 21 at the bottom of the conveyor belt 2. Rotating the threaded posts 32 completes the overall disassembly and assembly of the disassembly frame 3, eliminating the need to disassemble the entire conveyor belt, making maintenance and production changeover operations convenient. Two rows of vertical plates 33 are symmetrically and parallelly welded to the bottom surface of the fixed horizontal plate 31. Each vertical plate 33 has multiple sets of disassembly holes 34 along its height. Disassembly holes 34 of different heights are adapted to accommodate the installation of the drag carrier 5 corresponding to leaf springs of different thicknesses and specifications. Fixed posts 35 extend outwards from the back of both ends of the drag carrier 5. The fixed posts 35 are inserted and locked into the corresponding height disassembly holes 34. Multiple drag carriers 5 can be simultaneously assembled on a single disassembly frame 3. Currently, multiple leaf springs are synchronously electrophoretically processed. Two connecting rods 36 are vertically connected downwards on both sides of the fixed horizontal plate 31. The bottom end of the connecting rod 36 is rotated and equipped with limiting guide wheels 37. The left and right sets of limiting guide wheels 37 are synchronously embedded in the guide groove 13 on the outside of the conveyor frame 1 and slide inside. During the process of the conveyor belt 2 driving the disassembly and assembly frame 3 to move, the limiting guide wheels 37 slide synchronously along the guide groove 13, forming a double limit with the protrusion 22 in the limiting groove frame 12, which prevents the tooling from swaying left and right during high-speed conveying and prevents the leaf springs from bumping and scratching the surface of the workpiece.

[0026] The carrier 5 is the core tooling that directly supports the leaf spring. The inclined guide surface 51 is formed in the middle of the carrier 5. The inclined guide surface 51 is made of corrosion-resistant thin metal sheet by stamping. The sheet itself has slight elasticity and can deform slightly under external pressure and return to its original position on its own. The upper surface of the inclined guide surface 51 supports the arc-shaped main body of the leaf spring. The lugs at both ends of the leaf spring are correspondingly engaged in the semi-arc sleeves 6 at both ends of the carrier 5 to complete the positioning.

[0027] The semi-circular sleeve 6 has a semi-enclosed arc structure. The upper wall thickness of the semi-circular sleeve 6 is greater than that of the lower wall thickness. The upper part is made of highly ductile and corrosion-resistant rubber material, which can be expanded outward to accommodate leaf springs with different outer diameter specifications. Multiple sets of through-type liquid inlet guide holes 64 are evenly opened on the side wall of the semi-circular sleeve. The outer edge of the opening of the semi-circular sleeve 6 is integrally formed with an outwardly inclined guide edge 65. When the leaf spring enters the bending section 11 with the tooling and is immersed in the electrophoretic solution, the electrophoretic solution quickly flows into the inner cavity of the semi-circular sleeve 6 along the guide edge 65. It continuously flushes the inner and outer walls of the ear through the liquid inlet guide holes 64. The air accumulated inside the ear is completely discharged with the liquid flow, avoiding the accumulation of air that may cause electrophoretic blanks or exposed substrate defects, and ensuring that the paint film at the root of the ear and the inner wall is evenly and completely adhered.

[0028] The bottom of the semi-circular sleeve 6 has a wavy guide groove 61 along the conveying direction. The top and bottom of the guide groove 61 are integrally formed with inclined guide slopes 62, which reduce the flow resistance of the electrophoretic liquid and ensure smooth liquid flow. The two sides of the guide groove 61 bulge upward to form overflow edges 63. Excess electrophoretic liquid flows along the overflow edges 63. The return electrophoresis tank prevents liquid from accumulating inside the carrier 5 and solidifying to contaminate the workpiece. The bottom of the guide tank 61 is integrally formed with an inclined bladder 8. The bladder 8 is a hollow elastic rubber structure. One end of the bladder 8 is connected to the inside of the guide tank 61, and the other end extends into the inside of the carrier 5 to place the cavity 52. ​​The inside of the carrier 5 is hollow and formed to place the cavity 52, which is used to accommodate the agitator 7. The two ends of the cavity 52 are connected to the two bladders 8 on both sides. When the electrophoretic liquid flows along the wavy guide tank 61, the wavy track changes the cross-sectional area of ​​the liquid flow, causing the liquid flow velocity to change periodically. The high-speed liquid flow impacts and squeezes the inside of the bladder 8, causing the bladder 8 to contract and deform under pressure. During the low-speed liquid flow stage, the bladder 8 rebounds and expands. The bladder 8 reciprocates and expands by relying on the variable speed of the liquid flow.

[0029] An actuating body 7 is installed inside the cavity 52. ​​The actuating body 7 includes an actuating crank 71, a contact block 72, a hinge seat 73, and a torsion spring 74. The actuating crank 71 extends laterally through the cavity 52. ​​The contact block 72 is fixed to the outer wall of the middle part of the actuating crank 71, and the top surface of the contact block 72 is in close contact with the back of the inclined guide surface 51. The left and right ends of the actuating crank 71 are respectively equipped with hinge seats 73, which are fixedly connected to the outer walls of the two side bladders 8. When the bladders 8 contract and expand, they can pull the actuating crank 71 to swing back and forth. The back of the contact block 72 is fixed with a torsion spring 74, and the other end of the torsion spring 74 is hooked to the inner side wall of the cavity 52. ​​The torsion spring 74 provides a reverse pulling force under normal conditions. When the bladders 8 are squeezed and contracted by the liquid flow, pulling the actuating crank 71 to swing, the contact block 72 pushes upward against the inclined guide surface 51. The inclined guide surface 51 is slightly raised, and the placement angle of the leaf spring arc plate is simultaneously shifted. When the liquid flow rate decreases and the capsule 8 rebounds and expands, the torsion spring 74 pulls the crank 71 to reset, the inclined guide surface 51 falls back, and the leaf spring plate returns to its initial inclined angle. Relying on the variable speed electrophoretic liquid flow that continuously circulates in the curved section 11, the capsule 8 and the crank 71 continuously swing back and forth in small amplitudes, driving the inclined guide surface 51 to periodically fine-tune the immersion angle of the leaf spring arc plate. The upper arc surface, lower arc surface, and side of the leaf spring are in full contact with the electrophoretic liquid in sequence, eliminating dead corners in the electrophoresis of the plate and greatly improving the uniformity of the paint film.

[0030] A power component 4 is fixed to the bottom outer side of the conveyor frame 1. The core of the power component 4 is a drive motor 41. The base of the drive motor 41 is locked to the fixed base in the workshop. The output shaft of the drive motor 41 is coaxially mounted with a drive flywheel 45. The drive gear 42 is rotatably mounted on the outer side of the conveyor frame 1. The driven flywheel 46 is coaxially fixed to the outer side of the drive gear 42. A transmission belt 47 is sleeved between the drive flywheel 45 and the driven flywheel 46. When the drive motor 41 is running, it drives the drive gear 42 to rotate continuously through the flywheel and the transmission belt 47. The drive gear 42 meshes with the outer side of the inner ring toothed belt 23 of the conveyor belt 2. The rotation of the drive gear 42 drives the toothed belt 23 to rotate in a cycle, thereby driving the entire conveyor belt 2 to move in a closed loop along the conveyor frame 1. Multiple sets of balancing gears 44 mesh synchronously with the toothed belt 23 to distribute the force on the toothed belt 23, ensuring that the conveyor belt 2 runs smoothly without slippage or jamming. The conveying speed of the curved section 11 is stable, the force of the liquid flow impacting the bladder 8 is uniform and controllable, and the attitude adjustment action is continuous and stable.

[0031] The working process of this automated conveying device is mainly divided into four stages: leaf spring loading and assembly, equipment start-up and conveying, fluid-linked electrophoresis in the bending section, and material discharge and production change. Each stage works in conjunction with the others to achieve the seamless operation of "adaptive adjustment of leaf spring placement angle by electrophoretic fluid flow" and "continuous automated conveying and electrophoresis". The specific working principle is as follows: Leaf spring loading and assembly: First, rotate the threaded post 32 to remove the entire disassembly frame 3 from the bottom of the conveyor belt 2. Place the leaf spring to be electrophoresed on the inclined guide surface 51 of the carrier 5. Insert the lugs at both ends of the leaf spring into the semi-circular sleeve 6. The extensible structure at the top of the semi-circular sleeve 6 adaptively expands and wraps around the lugs to complete the positioning of the leaf spring. Insert the fixing posts 35 at both ends of the carrier 5 into the corresponding height disassembly holes 34 of the vertical plate 33 to complete the locking. Then, align the threaded post 32 at the top of the disassembly frame 3 with the mounting hole 21 at the bottom of the conveyor belt 2 and tighten it. At the same time, insert the limiting guide wheel 37 into the guide groove 13 of the conveyor frame 1 to complete the overall assembly of the tooling and the conveyor belt.

[0032] Equipment Start-up and Continuous Conveying: Start-up power component 4 drive motor 41, drive motor 41 drives active flywheel 45 to rotate, active flywheel 45 drives driven flywheel 46 to rotate synchronously with active gear 42 through transmission belt 47, active gear 42 meshes with toothed belt 23 to drive conveyor belt 2 to carry out closed-loop circulation, multiple sets of balance gears 44 synchronously mesh to support toothed belt 23, ensuring that the conveyor belt runs smoothly without shaking, and the tooling is continuously conveyed to the electrophoresis tank of curved section 11 at a uniform speed with the conveyor belt.

[0033] Adaptive electrophoresis operation with fluid flow linkage in the curved section: After the tooling is transported to the curved section 11, it is completely immersed in the electrophoresis solution. The electrophoresis tank circulation system continuously generates directional fluid flow, and the liquid is divided into two streams for operation. One stream flows in along the guide edge 65 of the semi-circular sleeve 6 and continuously flushes the inner cavity of the leaf spring lug through multiple sets of liquid inlet guide holes 64, completely expelling the air accumulated inside the lug and ensuring complete electrophoresis of the inner and outer walls of the lug. The other stream flows at a variable speed along the wave-shaped guide groove 61 at the bottom of the semi-circular sleeve 6. The wave track changes the impact pressure of the fluid flow, periodically squeezing the bottom bladder 8 of the tank to contract and deform. The contraction of the bladder 8 pulls the hinge seat 73. The crank 71 is driven to swing, and the middle contact block 72 pushes the inclined guide surface 51 upward, and the inclination angle of the leaf spring arc plate changes synchronously. After the liquid flow rate decreases, the capsule 8 rebounds and expands. The torsion spring 74 pulls the crank 71 to reset, and the inclined guide surface 51 falls back. During the continuous reciprocating swing, the leaf spring arc plate is immersed in the electrophoretic liquid at multiple angles. The paint film thickness is uniform in all parts of the plate, without drips or exposed substrate defects. The overflow edges 63 on both sides of the guide groove 61 intercept excess electrophoretic liquid and collect it back along the groove, avoiding liquid accumulation inside the tooling.

[0034] Unloading and tooling changeover: After the electrophoresis process is completed, the conveyor belt transports the tooling carrying the leaf spring out of the curved section 11, and the straight section station naturally drains the excess electrophoretic liquid from the surface of the leaf spring; after the tooling cycle to the loading station, the machine stops, and the entire set of disassembly and assembly frame 3 can be removed by rotating the threaded column 32 in the opposite direction. The carrier 5 can be disassembled separately by pulling out the fixed column 35, and tooling adapted to different specifications of leaf springs can be quickly replaced. The processed leaf spring can be removed, and the excess electrophoretic liquid recovered in the electrophoresis tank can be filtered and reused to complete a complete leaf spring electrophoresis conveying and processing cycle.

[0035] 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.

[0036] 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 variations 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. An automated conveying device based on leaf spring painting, comprising a conveying frame (1) and a curved section (11) suitable for electrophoresis, characterized in that: The lower part of the conveying frame (1) is provided with a limiting groove (12), and a conveyor belt (2) adapted to the conveying frame (1) is distributed in the limiting groove (12). Multiple mounting holes (21) are distributed at the lower part of the conveyor belt (2) according to the conveying pattern, and a disassembly frame (3) is installed at the mounting hole (21). A power component (4) for driving the conveyor belt (2) is provided on the outside of the conveying frame (1). Multiple carriers (5) for placing leaf springs are assembled on the disassembly frame (3). The two ends of the carrier (5) are provided with semi-arc sleeves (6) that wrap the leaf spring coils. The middle part of the carrier (5) is provided with an inclined guide surface (51) for placing the curved plate of the leaf spring. The inclined guide surface (51) is made of corrosion-resistant sheet. The bottom of the semi-arc sleeve (6) is provided with a guide groove (61). The carrier (5) is provided with a placement cavity (52). A toggle body (7) is distributed in the placement cavity (52). The toggle body (7) is attached to the back of the inclined guide surface (51) in the middle. The two ends of the placement cavity (52) are installed with a capsule (8) that connects to the bottom of the guide groove (61). The two ends of the toggle body (7) are connected to the capsule (8). The electrophoretic liquid flows along the guide groove (61) and causes the capsule (8) to contract, thereby causing the toggle body (7) to move the inclined guide surface (51).

2. The automated conveying device based on leaf spring painting according to claim 1, characterized in that: The guide groove (61) is wavy, the capsule (8) and the bottom of the guide groove (61) are integrally formed, and the capsule (8) is inclined. The electrophoretic liquid flows and is discharged along the wavy track of the guide groove (61) at different speeds. The electrophoretic liquid flowing at different speeds causes the capsule (8) to contract and deform.

3. The automated conveying device based on leaf spring painting according to claim 2, characterized in that: The actuating body (7) includes an actuating crank (71) disposed in the placement cavity (52). A contact block (72) is provided in the middle of the actuating crank (71), and the contact block (72) is in contact with the back of the inclined guide surface (51). The two ends of the actuating crank (71) are connected to hinge seats (73), and the hinge seats (73) are connected to the outside of the capsule (8). When the variable-speed flowing electrophoretic liquid causes the capsule (8) to contract and deform, it causes the actuating crank (71) to squeeze the inclined guide surface (51) in the placement cavity (52) to change the position of the arc plate on the inclined guide surface (51) according to the flow rate of the electrophoretic liquid.

4. The automated conveying device based on leaf spring painting according to claim 3, characterized in that: A torsion spring (74) is fixed to the back of the touch block (72), and one end of the torsion spring (74) is connected to the inner wall of the placement cavity (52).

5. An automated conveying device based on leaf spring painting according to claim 2, characterized in that: The top and bottom of the guide groove (61) are provided with guide slopes (62), and the groove edge of the guide groove (61) is provided with overflow edge (63).

6. An automated conveying device based on leaf spring painting according to claim 1, characterized in that: The upper part of the semi-arc sleeve (6) is thicker than the lower part, and the upper part of the semi-arc sleeve (6) is extensible. The semi-arc sleeve (6) is provided with multiple liquid inlet guide holes (64), and the outer edge of the semi-arc sleeve (6) is provided with a flow guide edge (65).

7. An automated conveying device based on leaf spring painting according to claim 1, characterized in that: The disassembly frame (3) includes a fixed horizontal plate (31), a threaded post (32) is installed on the top of the fixed horizontal plate (31), the threaded post (32) is threadedly connected to the mounting hole (21) at the bottom of the conveyor belt (2), two rows of vertical plates (33) are installed at the bottom of the fixed horizontal plate (31), and multiple sets of disassembly holes (34) are opened on the vertical plates (33). The two ends of the carrier (5) are fixed posts (35) fixed in the disassembly holes (34) on the back.

8. An automated conveying device based on leaf spring painting according to claim 7, characterized in that: The outer side of the conveying frame (1) is provided with a guide groove (13), and two connecting rods (36) are installed on the fixed horizontal plate (31). One end of the two connecting rods (36) is connected to a limiting guide wheel (37), and the two limiting guide wheels (37) slide in the guide groove (13).

9. An automated conveying device based on leaf spring painting according to claim 1, characterized in that: The top of the conveyor belt (2) is fitted with a protrusion (22) that slides within the limiting groove frame (12). The inner ring of the conveyor belt (2) is provided with a toothed belt (23). The power component (4) includes a drive motor (41). The bottom of the drive motor (41) is fixed in the installation position. The output end of the drive motor (41) is fitted with a drive flywheel (45). The toothed belt (23) is meshed with a drive gear (42). A driven flywheel (46) is mounted on the shaft of the drive gear (42). The drive flywheel (45) and the driven flywheel (46) are driven by a transmission belt (47).

10. An automated conveying device based on leaf spring painting according to claim 9, characterized in that: Multiple mounting frames (14) are installed on the conveying frame (1). A rotating shaft (43) is rotatably installed inside the mounting frame (14), and a balance gear (44) that meshes with the toothed belt (23) is installed at the bottom of the rotating shaft (43). A column (15) that is fixed to the mounting position is installed on the top of the conveying frame (1).

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