An electric bicycle frame coating process

Abstract

The application discloses an electric bicycle frame coating process, comprising the following steps: hoisting the frame to a degreasing soaking pool, an acid pickling soaking pool and a phosphating soaking pool in sequence through a crane, hoisting the frame after soaking in each soaking pool to a high-pressure cleaning pool for high-pressure cleaning, and then entering the next soaking pool; then hoisting the frame to a grinding workshop for grinding, wiping the frame through non-woven fabric after grinding, and then blowing and cleaning the frame through high-pressure gas; then hoisting the frame to a primer electrostatic automatic spraying workshop for primer spraying, then sending the frame into a baking workshop for baking at 120 DEG C for 15-20 minutes, then cooling the frame through gas, then sending the frame into a finish electrostatic automatic spraying workshop for finish spraying, and then sending the frame into a baking workshop for baking at 140-150 DEG C for 15-20 minutes, so as to improve the production efficiency of bicycle frame coating.

Description

Technical Field

[0001] This invention belongs to the field of coating technology and relates to a coating process for electric bicycle frames. Background Technology

[0002] Electric bicycle frames are typically made by connecting metal components such as steel tubes after machining. To improve the lifespan of the frame, it needs to be painted. The painting process usually involves pretreatment processes such as degreasing, pickling, and cleaning, followed by the application of primer and topcoat. Only after passing inspection can the next process begin.

[0003] Bicycle frames are usually irregularly shaped, and to ensure the protective effect of the coating, all parts must be coated. Moreover, the coating process involves multiple steps, and the irregular shape reduces the production efficiency of the coating process. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a coating process for electric bicycle frames, which effectively solves the problem of low production efficiency in existing technologies.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An electric bicycle frame painting process includes the following steps:

[0007] S1: The chassis is hoisted sequentially by a crane to a degreasing soaking tank containing a low-alkaline cleaning agent solution, an acid pickling soaking tank containing an acid pickling solution, and a phosphating soaking tank containing a phosphating agent solution for soaking. After soaking in each soaking tank, the chassis is hoisted to a high-pressure cleaning tank for high-pressure cleaning before entering the next soaking tank. After soaking in the phosphating soaking tank, the chassis is cleaned with pure water in the high-pressure cleaning tank. After cleaning, the chassis is sent to the drying area for drying.

[0008] S2: The frame after S1 processing is hoisted to the polishing workshop for polishing. After polishing, the frame is wiped with non-woven cloth and then cleaned with high-pressure air.

[0009] S3: After the S2 process, the chassis is hoisted to the primer electrostatic automatic spraying workshop for primer spraying, and then sent to the baking workshop to bake at 120℃ for 15-20 minutes. After that, the chassis is cooled by gas, and after cooling, it is sent to the topcoat electrostatic automatic spraying workshop for topcoat spraying, and then sent to the baking workshop to bake at 140-150℃ for 15-20 minutes.

[0010] It also includes a water supply tank and a water return tank set in the high-pressure cleaning tank. The water supply tank is equipped with a high-pressure pump. The upper end of the water return tank is equipped with an installation plate. Multiple main pipes are rotatably installed on one side of the installation plate. The main pipes are installed in a linear array on the installation plate. Multiple sub-pipes are arranged in a linear array along the axial direction of the main pipes. The sub-pipes penetrate the installation plate. There are two mirror-symmetrical installation plates. The main pipes are connected to a driving component.

[0011] The driving component includes a fixed rod and a connecting rod. The fixed rod is installed at one end of the main tube. The ends of the fixed rods away from the main tube are rotatably connected to the same connecting rod. The mounting plate is hinged to a driving rod, and the output end of the driving rod is hinged to the connecting rod.

[0012] Optionally, a fixed rail is fixedly connected to the upper end of the return water tank, a clamping member is slidably installed on the upper end of the fixed rail, a reciprocating drive is installed on the fixed rail, and the output end of the reciprocating drive is connected to the clamping member.

[0013] Optionally, deformable rails are fixedly provided on both sides of the fixed rail, and the clamping member includes a mounting block. Two clamping plates are slidably mounted on the upper end of the mounting block. The clamping plates are slidably mounted on the deformable rail near the side of the deformable rail, and the spacing between the deformable rails gradually narrows from both ends toward the position of the mounting plate.

[0014] Optionally, an adjustable rod is fixedly installed on the side of the clamping plate near the deformable rail. The adjustable rod includes an adjusting tube, and adjusting rods are threaded to both ends of the adjusting tube. The adjusting rods are respectively connected to the clamping plate and the deformable rail.

[0015] Optionally, the mounting block is a strong magnetic block.

[0016] Optionally, the sub-tube arrays on adjacent mother tubes are arranged in a cross pattern.

[0017] Optionally, the mounting plate is fixedly connected to a limiting block, which is located near the end of the linkage rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. A mounting plate is set up, and a movable sub-tube array is set on the mounting plate. When the frame is transported between the two mounting plates by the trolley, the sub-tubes spray high-pressure jets to wash both sides of the frame. The main tube is driven to rotate by the drive component, so that the sub-tubes move back and forth in the fan-shaped surface. Some of the sub-tubes can wash the upper and lower sides of the frame steel pipes, so that the frame is washed as thoroughly as possible. The high-pressure washing of the frame by the sub-tube array on the two mounting plates reduces the time required to wash irregularly shaped frames, thereby improving the production efficiency of the painting process.

[0020] 2. When the overhead crane is lifting the car frame, it usually hangs the car frame with a hook-shaped piece. A fixed rail is set at the upper end, and a sliding clamp is set on the fixed rail. When the overhead crane lifts the car frame to the upper end of the clamp, the clamp holds the car frame and fixes the car frame together with the overhead crane. This reduces the swaying of the car frame when it is impacted by high-pressure water flow, makes it easier to clean, and reduces the impact damage to the car frame.

[0021] 3. The fixed rail and clamping parts are located between two mounting plates and need to withstand a certain amount of high-pressure water flow impact. The clamping work is completed by setting a deformable rail and clamping plate mechanism, which reduces the power or other power drive mechanisms of the clamping parts that are greatly affected by water flow, improves safety and reduces the cost of use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle;

[0024] Figure 3 yes Figure 1 Enlarged schematic diagram of part B;

[0025] Figure 4 This is a schematic diagram of the clamping component in an embodiment of the present invention;

[0026] Figure 5 yes Figure 4 An enlarged schematic diagram of section C.

[0027] Reference numerals: 11. Mounting plate; 111. Limiting block; 12. Main tube; 13. Daughter tube; 14. Driving component; 141. Fixing rod; 142. Linking rod; 143. Driving rod;

[0028] 2. Fixed rail; 21. Clamping component; 22. Deformable rail; 23. Mounting block; 24. Clamping plate; 25. Adjustable rod; 251. Adjusting tube; 252. Adjusting rod. Detailed Implementation

[0029] 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.

[0030] An electric bicycle frame coating process disclosed in this invention includes the following steps:

[0031] S1: The chassis is hoisted sequentially by a crane to a degreasing soaking tank containing a low-alkaline cleaning agent solution, an acid pickling soaking tank containing an acid pickling solution, and a phosphating soaking tank containing a phosphating agent solution for soaking. After soaking in each soaking tank, the chassis is hoisted to a high-pressure cleaning tank for high-pressure cleaning before entering the next soaking tank. After soaking in the phosphating soaking tank, the chassis is cleaned with pure water in the high-pressure cleaning tank. After cleaning, the chassis is sent to the drying area for drying.

[0032] S2: The frame after S1 processing is hoisted to the polishing workshop for polishing. After polishing, the frame is wiped with non-woven cloth and then cleaned with high-pressure air.

[0033] S3: After the S2 process, the chassis is hoisted to the primer electrostatic automatic spraying workshop for primer spraying, and then sent to the baking workshop to bake at 120℃ for 15-20 minutes. After that, the chassis is cooled by gas, and after cooling, it is sent to the topcoat electrostatic automatic spraying workshop for topcoat spraying, and then sent to the baking workshop to bake at 140-150℃ for 15-20 minutes.

[0034] Please see Figures 1-3 It also includes a water supply tank and a return water tank set in the high-pressure cleaning tank. A high-pressure pump is installed in the water supply tank, and an installation plate 11 is installed at the upper end. Multiple main pipes 12 are rotatably installed on one side of the installation plate 11. The main pipes 12 are installed in a linear array on the installation plate 11. Multiple sub-pipes 13 are arranged in a linear array along the axial direction of the main pipes 12. The sub-pipes 13 penetrate the installation plate 11. There are two mirror-symmetrical installation plates 11. The main pipes 12 are connected to a driving component 14. The driving component 14 includes a fixed rod 141 and a connecting rod 142. A fixed rod 141 is installed at one end of each main pipe 12. The ends of the fixed rods 141 away from the main pipes 12 are rotatably connected to the same connecting rod 142. A driving rod 143 is hinged to the installation plate 11. The output end of the driving rod 143 is hinged to the connecting rod 142.

[0035] Specifically, the bicycle frame painting process requires at least three cleaning operations. A mounting plate 11 is installed, and a movable sub-tube array 13 is installed on the mounting plate 11. When the frame is transported between two mounting plates 11 by a vehicle, the sub-tubes 13 spray high-pressure jets to wash both sides of the frame. The main tube 12 is driven to rotate by the drive component 14, causing the sub-tubes 13 to move back and forth in a fan-shaped area. Some of the sub-tubes 13 can wash the upper and lower sides of the frame steel tubes, so that the frame is washed as thoroughly as possible.

[0036] In this way, the high-pressure washing of the frame by the sub-tubes 13 array on the two mounting plates 11 reduces the time required for washing irregularly shaped frames, thereby improving the production efficiency of the painting process.

[0037] In some feasible configurations, the mounting plate 11 is rectangular, the main pipe 12 is a high-pressure water pipe, and both ends of the main pipe 12 are rotatably mounted on both sides of the mounting plate 11 via bearings. The sub-pipe 13 is a high-pressure nozzle. The mounting plate 11 has rectangular holes corresponding to the positions of the sub-pipe 13, and the sub-pipe 13 swings within the rectangular holes. The fixing rod 141 and the connecting rod 142 are both rectangular rods, and the drive rod 143 is selected as a cylinder. During the reciprocating motion of the drive rod 143, the connecting rod 142 slides and swings, thereby driving the fixing rod 141 to rotate the main pipe 12. The high-pressure pump obtains water or other pure water or other cleaning fluid from the water supply tank, transmits it through pipelines to the main pipe 12, and sprays it out from the sub-pipe 13. The water after rinsing the frame falls downward into the return water tank.

[0038] As one specific implementation of the electric bicycle frame coating process provided in the application, please refer to Figures 4-5 The upper end is fixedly connected to the fixed rail 2, and the upper end of the fixed rail 2 is slidably mounted with a clamping component 21. The fixed rail 2 is equipped with a reciprocating drive, and the output end of the reciprocating drive is connected to the clamping component 21.

[0039] In general, when the overhead crane is lifting the car frame, it usually hangs the car frame with a hook-shaped piece and a fixed rail 2 is set at the upper end. A sliding clamping piece 21 is set on the fixed rail 2. When the overhead crane lifts the car frame to the upper end of the clamping piece 21, the clamping piece 21 clamps the car frame and fixes the car frame together with the overhead crane. This reduces the swaying of the car frame when it is impacted by high-pressure water flow, makes it easier to clean, and reduces the impact damage to the car frame.

[0040] In some feasible embodiments, the fixed rail 2 and the reciprocating drive can be selected as ball screw mechanisms, and the clamping member 21 can be selected as a controllable clamping mechanism such as a pneumatic claw.

[0041] Further, please refer to Figure 5 The fixed rail 2 has deformable rails 22 fixedly installed on both sides. The clamping member 21 includes a mounting block 23. Two clamping plates 24 are slidably installed on the upper end of the mounting block 23. The clamping plates 24 are slidably installed on the deformable rails 22 on the side close to the deformable rails 22. The spacing between the deformable rails 22 gradually narrows from both ends toward the position of the mounting plate 11.

[0042] Based on the specific application scenario, the fixed rail 2 and the clamping component 21 are located between the two mounting plates 11 and need to withstand a certain amount of high-pressure water flow impact. The clamping work is completed by setting the deformable rail 22 and the clamping plate 24 mechanism, which reduces the power or other power drive mechanism of the clamping component 21 that is greatly affected by the water flow, thereby improving safety and reducing the cost of use.

[0043] Furthermore, an adjustable rod 25 is fixedly installed on the side of the clamping plate 24 near the deformable rail 22. The adjustable rod 25 includes an adjusting tube 251, and adjusting rods 252 are threaded to both ends of the adjusting tube 251. The adjusting rods 252 are respectively connected to the clamping plate 24 and the deformable rail 22.

[0044] It should be understood that by setting the adjustable rod 25, the distance between the clamping plate 24 and the deformation rail 22 can be adjusted, making it easy to adapt to the use of frames of different sizes.

[0045] In some feasible configurations, the deformable rail 22 is a C-shaped rail, the clamping plate 24 is a rectangular plate, the mounting block 23 is connected to the output end of the reciprocating drive, the upper end of the mounting block 23 is equipped with a connecting piece, the connecting piece has a sliding hole, the middle part of the adjustable rod 25 is slidably installed in the sliding hole, the end of the adjustable rod 25 away from the clamping plate 24 is fixedly connected to a C-shaped piece, the two ends of the C-shaped piece are rotatably mounted with rotating wheels, the two ends of the rotating wheels are rotatably engaged in the C-shaped rail, in order to facilitate the C-shaped piece to pass through the changing part of the deformable rail 22 from wide to narrow, the C-shaped piece is an elastic metal piece, which, in conjunction with its own C-shaped structure, gives the C-shaped piece a certain deformation and recovery ability, making it easy to adapt to the spacing changes of the deformable rail 22.

[0046] In some feasible methods, a strong magnetic block is installed on the mounting block 23. The frame is usually made of steel pipe. By setting the strong magnetic block, when the frame is lifted by the gantry crane to the upper end of the mounting block 23, the mounting block 23 generates a magnetic attraction force on the frame, which makes it easier for the frame to enter the middle area of ​​the clamping plate 24 for clamping. When using, the gantry crane should be adjusted so that when the frame is lifted to the stop position, the lowest point of the frame is directly opposite the reset position of the mounting block 23, so that the frame can enter the clamping position. When the frame structure is large or difficult to clamp, multiple mounting blocks 23 can be set to clamp multiple points of the frame.

[0047] As another specific embodiment of the electric bicycle frame painting process provided in the application, please refer to [link / reference]. Figure 3 The sub-tubes 13 on adjacent mother tubes 12 are arranged in a cross pattern.

[0048] Based on specific usage scenarios, the cross-arranged sub-tube array 13 ensures that the spraying areas of adjacent rows of sub-tubes 13 are located between adjacent columns of sub-tubes 13, allowing the high-pressure jet to cover the entire frame as much as possible and improving the cleaning effect.

[0049] As one specific implementation of the electric bicycle frame coating process provided in the application, please refer to Figure 2 The mounting plate 11 is fixedly connected to the limiting block 111, which is located near the end of the linkage rod 142.

[0050] It should be understood that by setting the limit block 111, the possibility of the linkage 142 moving too much and jamming the drive rod 143 is reduced. The limit block 111 should restrict the linkage 142 so that the fixed rod 141 swings back and forth within a limited angle.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coating process for an electric bicycle frame, characterized in that: Includes the following steps: S1: The chassis is hoisted sequentially by a crane to a degreasing soaking tank containing a low-alkaline cleaning agent solution, an acid pickling soaking tank containing an acid pickling solution, and a phosphating soaking tank containing a phosphating agent solution for soaking. After soaking in each soaking tank, the chassis is hoisted to a high-pressure cleaning tank for high-pressure cleaning before entering the next soaking tank. After soaking in the phosphating soaking tank, the chassis is cleaned with pure water in the high-pressure cleaning tank. After cleaning, the chassis is sent to the drying area for drying. S2: The frame after S1 processing is hoisted to the polishing workshop for polishing. After polishing, the frame is wiped with non-woven cloth and then cleaned with high-pressure air. S3: After the S2 process, the chassis is hoisted to the primer electrostatic automatic spraying workshop for primer spraying, and then sent to the baking workshop to bake at 120℃ for 15-20 minutes. After that, the chassis is cooled by gas, and after cooling, it is sent to the topcoat electrostatic automatic spraying workshop for topcoat spraying, and then sent to the baking workshop to bake at 140-150℃ for 15-20 minutes. It also includes a water supply tank and a water return tank set in the high-pressure cleaning tank. The water supply tank is equipped with a high-pressure pump. The upper end of the water return tank is equipped with an installation plate. Multiple main pipes are rotatably installed on one side of the installation plate. The main pipes are installed in a linear array on the installation plate. Multiple sub-pipes are arranged in a linear array along the axial direction of the main pipes. The sub-pipes penetrate the installation plate. There are two mirror-symmetrical installation plates. The main pipes are connected to a driving component. The driving component includes a fixed rod and a connecting rod. The fixed rod is installed at one end of the main tube. The fixed rod can be rotatably connected to the same connecting rod at the end away from the main tube. The mounting plate is hinged to a driving rod, and the output end of the driving rod is hinged to the connecting rod. The upper end of the return water tank is fixedly connected to a fixed rail. A clamping component is slidably mounted on the upper end of the fixed rail. A reciprocating drive is mounted on the fixed rail, and the output end of the reciprocating drive is connected to the clamping component. Deformable rails are fixedly arranged on both sides of the fixed rail. The clamping component includes a mounting block. Two clamping plates are slidably mounted on the upper end of the mounting block. The clamping plates are slidably mounted on the deformable rails near the side of the clamping plate. The spacing between the deformable rails gradually narrows from both ends toward the position of the mounting plate. An adjustable rod is fixedly mounted on the side of the clamping plate near the deformable rail. The adjustable rod includes an adjusting tube. Adjusting rods are threaded to both ends of the adjusting tube. The adjusting rods are respectively connected to the clamping plate and the deformable rail. A C-shaped piece is fixedly connected to the end of the adjustable rod away from the clamping plate. Rotating wheels are rotatably mounted on both ends of the C-shaped piece. The two ends of the rotating wheels are rotatably engaged in the C-shaped rail. The C-shaped piece is an elastic metal piece.

2. The electric bicycle frame coating process according to claim 1, characterized in that: The mounting block is a strong magnetic block.

3. The electric bicycle frame coating process according to claim 1, characterized in that: The sub-tube arrays on adjacent mother tubes are arranged in a cross pattern.

4. The electric bicycle frame coating process according to claim 1, characterized in that: The mounting plate is fixedly connected to a limiting block, which is located near the end of the linkage rod.

Images