A baking varnish process for electric bicycle body

Abstract

The invention discloses a baking varnish process for an electric bicycle body, which effectively increases the adhesion of the spray paint, thereby increasing the high temperature resistance and peeling adjacent load of the frame after spray painting, and improving the spray painting quality of the frame. The process comprises the following steps: step S1, roughening the surface of the frame; step S2, dust removal of the frame; step S3, degreasing the frame; step S4, drying the frame; step S5, spray painting the frame; step S6, post-painting treatment. The invention has a novel structure, an ingenious conception, and is simple and convenient to operate, and effectively achieves the purpose of being able to completely dry the frame after washing, adds a function of allowing water on the frame to drip quickly, facilitates fixing the frame, and can quickly remove water drops on the frame, so that the device can quickly discharge liquid.

Description

Technical Field

[0001] The invention belongs to the technical field of frame production and spray painting, and relates to a baking paint process for an electric bicycle body. Background Art

[0002] An electric bicycle is a vehicle that uses batteries as auxiliary energy and is equipped with a motor, controller, battery, turning handle, brake handle and other operating components and a display instrument system on the basis of an ordinary bicycle. The body of the electric bicycle is the main structure of the electric bicycle, and the frame needs to be painted during the manufacturing process;

[0003] However, the paint adhesion of the final product of the existing painting process is insufficient for electric bicycles that need to be used for a long time. The critical load of peeling will be greatly affected after long-term use. In addition, there is a lack of pretreatment of the frame before painting, which makes it inconvenient to clean the frame. Therefore, a baking paint process for electric bicycle body that can improve the paint adhesion is needed to solve the above problems. Summary of the invention

[0004] In view of the above problems, the present invention proposes a baking varnish process for an electric bicycle body, which well solves the problems in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A baking varnish process for an electric bicycle body comprises the following steps:

[0007] Step S1: Roughening treatment of the frame surface:

[0008] The outer surface of the frame is roughened to increase the roughness of the frame surface;

[0009] Step S2: dust removal from the frame:

[0010] The frame roughened in step S1 is cleaned with a brush to remove dust from the surface of the frame;

[0011] Step S3: Degreasing the frame:

[0012] The frame that has been dust-removed in step S2 is placed in a degreasing agent at a temperature of 45°C for 20-25 minutes, and then rinsed with a large amount of clean water at 45°C;

[0013] Step S4: Drying of the frame:

[0014] The frame that has undergone the degreasing treatment in step S3 is placed in a cleaning center, and the surface of the frame is blown with air by a high-pressure blower to remove excess moisture and uncleaned dust on the surface of the frame;

[0015] Step S5: spray painting of the frame:

[0016] The frame after the processing in step S4 is spray-painted, and after spraying one side, the frame is rotated and the other side of the frame is spray-painted;

[0017] Step S6, treatment after painting:

[0018] The frame after the painting treatment in step S5 is placed in an air heater, slowly heated to 70-90° C. and then dried for 1.5 hours, and then heated to 165° C. and dried for 5 hours to obtain a finished product.

[0019] Preferably, the roughening treatment in step S1 is a sandblasting process, the blasting material is glass beads, and the sandblasting speed is 35-40 m / s.

[0020] Preferably, the degreasing agent in step S2 is an aqueous solution of trisodium phosphate, and the mass fraction of trisodium phosphate is 30%-34%.

[0021] Preferably, a plurality of movable fixed tooling is provided on the outer side of the conveyor body, a plurality of movable plates are provided on the outer side of the conveyor body, each of the fixed tooling is rotatably connected to the corresponding movable plate, a cleaning rack is fixedly connected to the upper side of the conveyor body, and an isolation cloth is fixedly connected to the front end, middle part and rear end of the cleaning rack, and the three isolation cloths divide the interior of the cleaning rack into a drying area and a wiping area, a plurality of rotating lotus nozzles are provided inside the drying area, and a rotatable wiping rack is symmetrically provided on the left and right sides of the wiping area.

[0022] Preferably, the upper side of the conveying body is symmetrically fixedly connected with a first fixed plate and a second fixed plate, a side of the first fixed plate close to the second fixed plate is fixedly connected with a plurality of first fixed teeth, a side of the second fixed plate close to the first fixed plate is fixedly connected with a plurality of second fixed teeth, the first fixed teeth and the second fixed teeth are staggered, and the upper sides of the first fixed plate and the second fixed plate are respectively fixedly connected with a plurality of lifting rods, and the lifting rods are symmetrically arranged relative to the conveying body.

[0023] Preferably, the fixed tooling includes a support frame rotatably connected to the corresponding movable plate, a hydraulic connecting pipe is fixedly connected to the inside of the support frame, a conical block is fixedly connected to the upper side of the hydraulic connecting pipe, a limit plate that can move up and down is connected to the middle of the hydraulic connecting pipe through a sliding key, a plurality of rubber strips that can extend outward are provided in the middle of the conical block, and a vibrator is fixedly connected to the middle of the support frame.

[0024] Preferably, a hydraulic communication groove is provided inside the conical block, and the lower side of the hydraulic communication groove is connected to the hydraulic connecting pipe. A hydraulic circular groove is provided in the middle of the support frame, and a plurality of connecting holes are provided on the lower side of the hydraulic connecting pipe. The interior of the hydraulic connecting pipe is connected to the hydraulic circular groove through the connecting holes. A power hydraulic cylinder is fixedly connected to the lower side of the limit plate, and the power hydraulic cylinder is placed between the hydraulic circular groove and the hydraulic connecting pipe.

[0025] Each of the rubber strips is fixedly connected to two connecting rods on one side close to the central axis of the conical block, a connecting hole is opened on the conical block corresponding to the position of each connecting rod, each connecting hole is connected to the hydraulic connecting groove, and a limit block is fixedly connected to the upper side of the limit plate.

[0026] Preferably, the lower side of the vibrator is electrically connected to a touch switch connected to the support frame, the lower side of the touch switch is provided with a connecting ring slidably connected to the support frame, the upper side of the connecting ring is provided with a plurality of first springs, the middle part of the support frame is fixedly connected to a position corresponding to each first spring, the upper side of each first spring abuts against the corresponding reset connecting block, the connecting ring and the lifting rod cooperate with each other to form a structure for starting the vibrator, and the lower side of the support frame is fixedly connected to a rotating gear, the rotating gear cooperates with the first fixed tooth and the second fixed tooth to form a structure for rotating the support frame.

[0027] Preferably, the upper side surfaces of the first fixing plate and the second fixing plate are both inclined surfaces, a plurality of first drainage ports are provided at the connection between the first fixing plate, the second fixing plate and the conveyor body, and a second drainage port connected one-to-one with the first drainage port is provided on the left and right sides of the conveyor body;

[0028] The interior of the drying area is fixedly connected with a plurality of air supply branches, each of the rotating lotus nozzles is connected to the corresponding air supply branch, an industrial fan is fixedly connected to the upper side of the cleaning rack, the lower side of the industrial fan is connected to an air supply main pipe, and the upper side of each air supply branch pipe is connected to the air supply main pipe.

[0029] Preferably, the wiping frame includes a rotating frame rotatably connected to the conveying body, a motor is fixedly connected to the middle of the rotating frame, a sun gear is fixedly connected to the output end of the motor, an outer gear ring is fixedly connected to the inside of the rotating frame, a plurality of planetary gears are meshed between the sun gear and the outer gear ring, a cleaning disk is fixedly connected to the side of each planetary gear away from the motor, a cleaning cotton is detachably connected to the side of each cleaning disk away from the planetary gear through Velcro, and a plurality of wiping cotton strips are fixedly connected to the outside of each cleaning cotton

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention uses a roughening step of a sandblasting process, and preferably the spray material is glass beads, which can increase the roughness of the frame surface and thus improve the adhesion of the paint coating.

[0032] 2. The present invention has a degreasing step of using trisodium phosphate for degreasing, which can be beneficial to the adhesion of subsequent coatings.

[0033] 3. The present invention has a cleaning center which can facilitate the staff to thoroughly clean the frame, which can not only quickly clean the liquid on the frame, but also further wipe the frame to increase the cleanliness of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the cleaning center in the present invention.

[0035] Figure 2 It is a schematic diagram of the internal structure of the cleaning rack in the present invention.

[0036] Figure 3 It is a schematic diagram of the explosion structure of the wiping rack in the present invention.

[0037] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of area A in the middle.

[0038] Figure 5 It is a schematic diagram of the structure of the fixing tool in the present invention.

[0039] Figure 6 It is a schematic diagram of the position of the hydraulic circular groove in the present invention.

[0040] In the figure: 1. conveyor body; 2. fixed tooling; 3. moving plate; 4. cleaning rack; 5. isolation cloth; 6. blow-drying area; 7. wiping area; 8. rotating lotus nozzle; 9. wiping rack; 10. first fixed plate; 11. second fixed plate; 12. first fixed tooth; 13. second fixed tooth; 14. lifting rod; 15. support frame; 16. hydraulic connecting pipe; 17. conical block; 18. limit plate; 19. rubber strip; 20. vibrator; 21. hydraulic connecting groove; 22. hydraulic circular groove; 23. connecting hole; 24, power hydraulic cylinder; 25, connecting rod; 26, connecting hole; 27, limit block; 28, touch switch; 29, connecting ring; 30, first spring; 31, rotating gear; 32, first drain outlet; 33, second drain outlet; 34, air supply branch pipe; 35, industrial fan; 36, rotating frame; 37, motor; 38, sun gear; 39, outer gear ring; 40, planetary gear; 41, cleaning disk; 42, cleaning cotton; 43, wiping cotton strip; 44, reset connecting block; 45, air supply main pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The following is combined with Figure 1-Figure 6 The specific implementation modes of the present invention are described in further detail.

[0043] Example 1

[0044] A baking varnish process for an electric bicycle body comprises the following steps:

[0045] Step S1: Roughening treatment of the frame surface:

[0046] The outer surface of the frame is roughened by sandblasting to increase the roughness of the frame surface and thus improve the adhesion of the paint coating. The spray material is glass beads and the sandblasting speed is 35-40m / s;

[0047] Step S2: dust removal from the frame:

[0048] The frame that has been roughened in step S1 is cleaned with a brush to remove dust on the surface of the frame to ensure the cleanliness of the surface of the frame;

[0049] Step S3: Degreasing the frame:

[0050] The frame that has been dust-removed in step S2 is immersed in an aqueous solution of trisodium phosphate with a mass fraction of 30%-34% and a temperature of 45°C for degreasing for 20-25 minutes, and then rinsed with a large amount of clean water at 45°C;

[0051] Step S4: Drying of the frame:

[0052] The frame that has undergone the degreasing treatment in step S3 is placed in a cleaning center, and the surface of the frame is blown with air by a high-pressure blower to remove excess moisture and uncleaned dust on the surface of the frame;

[0053] Step S5: spray painting of the frame:

[0054] The frame after the processing in step S4 is spray-painted, and after spraying one side, the frame is rotated and the other side of the frame is spray-painted;

[0055] Step S6, treatment after painting:

[0056] The frame after the painting treatment in step S5 is placed in an air heater, slowly heated to 70-90° C. and then dried for 1.5 hours, and then heated to 165° C. and dried for 5 hours to obtain a finished product.

[0057] Example 2

[0058] A baking varnish process for an electric bicycle body comprises the following steps:

[0059] Step S1: Roughening treatment of the frame surface:

[0060] The outer surface of the frame is roughened by sandblasting to increase the roughness of the frame surface and thus improve the adhesion of the paint coating. The spray material is glass beads and the sandblasting speed is 38m / s.

[0061] Step S2: dust removal from the frame:

[0062] The frame that has been roughened in step S1 is cleaned with a brush to remove dust on the surface of the frame to ensure the cleanliness of the surface of the frame;

[0063] Step S3: Degreasing the frame:

[0064] The frame that has been dust-removed in step S2 is immersed in a 32% sodium triphosphate aqueous solution at a temperature of 45°C for degreasing for 22 minutes, and then rinsed with a large amount of clean water at 45°C;

[0065] Step S4: Drying of the frame:

[0066] The frame that has undergone the degreasing treatment in step S3 is placed in a cleaning center, and the surface of the frame is blown with air by a high-pressure blower to remove excess moisture and uncleaned dust on the surface of the frame;

[0067] Step S5: spray painting of the frame:

[0068] The frame after the processing in step S4 is spray-painted, and after spraying one side, the frame is rotated and the other side of the frame is spray-painted;

[0069] Step S6, treatment after painting:

[0070] The frame after the painting treatment in step S5 is placed in an air heater, slowly heated to 80° C. and dried for 1.5 hours, and then heated to 165° C. and dried for 5 hours to obtain a finished product.

[0071] Example 3

[0072] A baking varnish process for an electric bicycle body comprises the following steps:

[0073] Step S1: Roughening treatment of the frame surface:

[0074] The outer surface of the frame is roughened by sandblasting to increase the roughness of the frame surface and thus improve the adhesion of the paint coating. The spray material is glass beads and the sandblasting speed is 40m / s.

[0075] Step S2: dust removal from the frame:

[0076] The frame that has been roughened in step S1 is cleaned with a brush to remove dust on the surface of the frame to ensure the cleanliness of the surface of the frame;

[0077] Step S3: Degreasing the frame:

[0078] The frame that has been dust-removed in step S2 is immersed in a 34% sodium triphosphate aqueous solution at a temperature of 45° C. for degreasing for 25 minutes, and then rinsed with a large amount of clean water at 45° C.;

[0079] Step S4: Drying of the frame:

[0080] The frame that has undergone the degreasing treatment in step S3 is placed in a cleaning center, and the surface of the frame is blown with air by a high-pressure blower to remove excess moisture and uncleaned dust on the surface of the frame;

[0081] Step S5: spray painting of the frame:

[0082] The frame after the processing in step S4 is spray-painted, and after spraying one side, the frame is rotated and the other side of the frame is spray-painted;

[0083] Step S6, treatment after painting:

[0084] The frame after the painting treatment in step S5 is placed in an air heater, slowly heated to 90° C. and dried for 1.5 hours, and then heated to 165° C. and dried for 5 hours to obtain a finished product.

[0085] Comparative Example 1

[0086] A baking varnish process for an electric bicycle body comprises the following steps:

[0087] Step S1: Roughening treatment of the frame surface:

[0088] The outer surface of the frame is roughened by using traditional sandpaper with a grit of 190.

[0089] Step S2: dust removal from the frame:

[0090] The frame that has been roughened in step S1 is cleaned with a brush to remove dust on the surface of the frame to ensure the cleanliness of the surface of the frame;

[0091] Step S3: Degreasing of the frame:

[0092] The frame that has undergone the dust removal treatment in step S2 is placed in a 30% by mass sodium phosphate aqueous solution at room temperature for immersion and degreasing for 20 minutes, and then rinsed with a large amount of clean water at room temperature;

[0093] Step S4: Drying of the frame:

[0094] The frame that has undergone the degreasing treatment in step S3 is placed in a cleaning center, and the surface of the frame is blown with air by a high-pressure blower to remove excess moisture and uncleaned dust on the surface of the frame;

[0095] Step S5: spray painting of the frame:

[0096] The frame after the processing in step S4 is spray-painted, and after spraying one side, the frame is rotated and the other side of the frame is spray-painted;

[0097] Step S6, treatment after painting:

[0098] The frame after the painting treatment in step S5 is placed in an air heater, slowly heated to 90° C. and dried for 1.5 hours, and then heated to 165° C. and dried for 5 hours to obtain a finished product.

[0099] The performance indexes of the frames processed by the above-mentioned embodiments 1-3 and comparative example 1 were tested respectively, and the test results are as follows:

[0100]

[0101] By comparing and analyzing the above table, it can be concluded that the frame treated by sandblasting with glass beads as the spray material and degreasing can effectively increase the adhesion of the paint, thereby increasing the high temperature resistance and peeling adjacent load of the painted frame, thereby improving the paint quality of the frame.

[0102] Further, by Figure 1-Figure 6In order to achieve the purpose of completely drying the washed frame, the cleaning center includes a conveyor body 1, a plurality of movable fixed tooling 2 is provided on the outside of the conveyor body 1, and a plurality of movable plates 3 are provided on the outside of the conveyor body 1. The conveyor body 1 is a plate conveyor, which is a prior art and will not be described in detail here. The movable plate 3 is the conveying plate of the plate conveyor, which can be moved by the transmission system inside the plate conveyor. Each of the fixed tooling 2 is rotatably connected to the corresponding movable plate 3. The conveyor body 1 A cleaning rack 4 is fixedly connected to the upper side of the cleaning rack 4, and a separation cloth 5 is fixedly connected to the front end, the middle part and the rear end of the cleaning rack 4, respectively. The separation cloth 5 is a transparent plastic cloth, and a vertical opening is opened in the middle thereof. The three separation cloths 5 divide the interior of the cleaning rack 4 into a drying area 6 and a wiping area 7. The drying area 6 is located at the rear side of the wiping area 7. A plurality of rotating lotus nozzles 8 are arranged inside the drying area 6. The rotating lotus nozzles 8 are prior art and will not be described in detail here. A rotatable wiping rack 9 is symmetrically arranged inside the wiping area 7.

[0103] When in use, the frame to be dried can be fixed by the fixing tool 2, and then the movable plate 3 drives the frame to be transported forward from the rear of the conveying body 1, and is blown by the rotating lotus nozzle 8 and wiped by the wiping frame 9 in turn to complete the drying process.

[0104] Further, by Figure 1-Figure 6 It is given that the upper side of the conveyor body 1 is symmetrically fixedly connected with a first fixed plate 10 and a second fixed plate 11, the first fixed plate 10 is fixedly connected to a side close to the second fixed plate 11 with a plurality of first fixed teeth 12, the second fixed plate 11 is fixedly connected to a side close to the first fixed plate 10 with a plurality of second fixed teeth 13, the first fixed teeth 12 and the second fixed teeth 13 are staggered, the upper sides of the first fixed plate 10 and the second fixed plate 11 are respectively fixedly connected with a plurality of lifting rods 14, the rear side of each of the lifting rods 14 is an inclined surface, and the lifting rods 14 are symmetrically arranged relative to the conveyor body 1.

[0105] Further, in order to achieve the purpose of rapid dripping of water on the frame, the fixed tooling 2 includes a support frame 15 rotatably connected to the corresponding movable plate 3, a hydraulic connecting pipe 16 is fixedly connected to the inside of the support frame 15, a conical block 17 is fixedly connected to the upper side of the hydraulic connecting pipe 16, a limit plate 18 that can move up and down is connected to the middle of the hydraulic connecting pipe 16 through a sliding key, a plurality of rubber strips 19 that can extend outward are provided in the middle of the conical block 17, the rubber strips 19 have a certain elasticity and can undergo a certain elastic deformation, and a vibrator 20 is fixedly connected to the middle of the support frame 15;

[0106] When in use, the positioning opening on the frame can be fixed by the conical block 17. Since the sizes of the positioning openings on different frames are different, the frame can be longitudinally supported by the limiting plate 18. When the frame is placed on the limiting plate 18, the limiting plate 18 will move downward under the action of the gravity of the frame. At this time, the rubber strip 19 will extend outward relative to the conical block 17, and then approach the inner wall of the positioning opening on the frame to fix the frame.

[0107] Furthermore, in order to facilitate the fixing of the vehicle frame, a hydraulic connecting groove 21 is provided inside the conical block 17, and the lower side of the hydraulic connecting groove 21 is connected to the hydraulic connecting pipe 16. A hydraulic circular groove 22 is provided in the middle of the support frame 15, and the lower side of the hydraulic connecting pipe 16 is fixedly connected to the bottom of the hydraulic circular groove 22. A plurality of connecting holes 23 are provided on the lower side of the hydraulic connecting pipe 16, and the interior of the hydraulic connecting pipe 16 is connected to the hydraulic circular groove 22 through the connecting holes 23. A power hydraulic cylinder 24 is fixedly connected to the lower side of the limit plate 18, and the power hydraulic cylinder 24 is placed between the hydraulic circular groove 22 and the hydraulic connecting pipe 16. The interior of the hydraulic connecting pipe 16 and the interior of the hydraulic circular groove 22 are filled with hydraulic oil, and a sealing ring is provided at the bottom of the power hydraulic cylinder 24.

[0108] Each of the rubber strips 19 is fixedly connected to one side close to the central axis of the conical block 17 with two connecting rods 25. A connecting hole 26 is provided on the conical block 17 at a position corresponding to each connecting rod 25. Each connecting hole 26 is connected to the hydraulic connecting groove 21. A limiting block 27 is fixedly connected to the upper side of the limiting plate 18. The limiting block 27 can limit the relative rotation between the frame and the limiting plate 18.

[0109] During use, when the power hydraulic cylinder 24 moves downward under the action of the limit plate 18, it will push the hydraulic oil on the lower side of the power hydraulic cylinder 24, so that it enters the hydraulic connecting pipe 16 through the connecting hole 23, thereby increasing the pressure inside the hydraulic connecting pipe 16. At this time, each connecting rod 25 will move outward, thereby driving the rubber strip 19 to extend outward to abut and fix the inner wall of the frame. Since there is a certain angle between the two connecting rods 25 connected to each rubber strip 19, when the connecting rod 25 is extended, the rubber strip 19 will be stretched and deformed. When the frame is removed from the limit plate 18, each rubber strip 19 will return to its original shape under the action of its own elastic force, and the fixing tooling 2 will also be reset.

[0110] Further, in order to enable the water droplets on the frame to be removed quickly, the lower side of the vibrator 20 is electrically connected to a light touch switch 28 connected to the support frame 15. The vibrator 20 and the light touch switch 28 are both prior arts and will not be described in detail here. A connecting ring 29 slidably connected to the support frame 15 is provided on the lower side of the light touch switch 28, and a plurality of first springs 30 are provided on the upper side of the connecting ring 29. A reset connecting block 44 is fixedly connected to the position of each first spring 30 in the middle part of the support frame 15, and the upper side of each first spring 30 abuts against the corresponding reset connecting block 44. The connecting ring 29 cooperates with the lifting rod 14 to form a structure for starting the vibrator 20. A rotating gear 31 is fixedly connected to the lower side of the support frame 15, and the rotating gear 31 cooperates with the first fixed tooth 12 and the second fixed tooth 13 to form a structure for rotating the support frame 15.

[0111] During use, when the fixed tooling 2 moves with the movable plate 3, the connecting ring 29 will contact the lifting rod 14, thereby causing the connecting ring 29 to move upward and contact the touch switch 28, turning on the vibrator 20 to vibrate the frame to shake off water droplets on its surface. When the fixed tooling 2 drives the frame to move, the rotating gear 31 will engage with the first fixed tooth 12 and the second fixed tooth 13 in sequence, thereby causing the fixed tooling 2 to drive the frame to rotate, so that the frame can be blown at different angles.

[0112] Furthermore, in order to quickly discharge the liquid, the upper side surfaces of the first fixing plate 10 and the second fixing plate 11 are both inclined surfaces, and a plurality of first drainage ports 32 are provided at the connection between the first fixing plate 10, the second fixing plate 11 and the conveying body 1, and a second drainage port 33 connected one-to-one with the first drainage port 32 is provided on the left and right sides of the conveying body 1;

[0113] A plurality of air supply branches 34 are fixedly connected inside the drying area 6, and each of the rotating lotus nozzles 8 is connected to the corresponding air supply branch 34. An industrial fan 35 is fixedly connected to the upper side of the cleaning rack 4. The industrial fan 35 is a prior art and will not be described in detail here. An air supply main pipe 45 is connected to the lower side of the industrial fan 35, and the upper side of each air supply branch pipe 34 is connected to the air supply main pipe 45.

[0114] When in use, the blown-off water droplets will be discharged from the cleaning rack 4 through the first drainage port 32 and the second drainage port 33 .

[0115] Furthermore, in order to wipe away the residual moisture, the wiping frame 9 includes a rotating frame 36 rotatably connected to the conveying body 1, a motor 37 is fixedly connected to the middle of the rotating frame 36, and a sun gear 38 is fixedly connected to the output end of the motor 37. An outer gear ring 39 is fixedly connected to the inside of the rotating frame 36, and a plurality of planetary gears 40 are meshed between the sun gear 38 and the outer gear ring 39. A cleaning disk 41 is fixedly connected to the side of each planetary gear 40 away from the motor 37, and a cleaning cotton 42 is detachably connected to the side of each cleaning disk 41 away from the planetary gear 40 through Velcro, and a plurality of wiping cotton strips 43 are fixedly connected to the outer side of each cleaning cotton 42. The cleaning cotton 42 is a water-washing cotton that can undergo a certain deformation, and the wiping cotton strips 43 are made of suede material and have good water absorption.

[0116] When in use, after starting the motor 37, the motor 37 will drive each planetary gear 40 to rotate through the sun gear, and then each planetary gear 40 will drive the cleaning cotton 42 to rotate through the corresponding cleaning disk 41, that is, each cleaning cotton 42 rotates around the central axis of the outer gear ring 39 while rotating on its own, so as to achieve a good wiping effect on the frame. The number of the first fixed teeth 12 and the second fixed teeth 13 is the same. When the frame enters the wiping area 7, the frame is facing front and back, and can smoothly pass through the middle of the two rotating frames 36. The rotating frame 36 is rotatably connected to the conveyor body 1, which can facilitate the frame to pass between the two rotating frames 36.

[0117] When the present invention is used, the positioning opening on the frame can be fixed by the conical block 17. Since the sizes of the positioning openings on different frames are different, the frame can be supported longitudinally by the limit plate 18. When the frame is placed on the limit plate 18, the limit plate 18 will move downward under the action of the gravity of the frame. At this time, the rubber strip 19 will extend outward relative to the conical block 17 and then approach the inner wall of the positioning opening on the frame to fix the frame. When the fixing tool 2 moves with the moving plate 3, the connecting ring 29 will contact the lifting rod 14, and then the connecting ring 29 will move upward to contact the light touch switch 28, turning on the vibrator 20 to vibrate the frame. When the fixed tooling 2 drives the frame to move, the rotating gear 31 will mesh with the first fixed tooth 12 and the second fixed tooth 13 in sequence, so that the fixed tooling 2 drives the frame to rotate, so that the frame can be blown at different angles. When the frame enters the wiping area 7, each motor 37 is in the starting state, and the motor 37 will drive each planetary gear 40 to rotate through the sun gear, and then each planetary gear 40 will drive the cleaning cotton 42 to rotate through the corresponding cleaning disk 41, that is, each cleaning cotton 42 rotates around the central axis of the outer gear ring 39 while rotating on its own, so as to achieve a good wiping effect on the frame.

[0118] The present invention has a novel structure, an ingenious conception, and is simple and convenient to operate. Through this design, the purpose of completely drying the frame after washing is effectively achieved, a function of quickly dripping water on the frame is added, the frame is convenient to fix, the water droplets on the frame can be quickly removed, and the device can quickly discharge the liquid.

[0119] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A baking varnish process for an electric bicycle body, characterized in that: The following steps are involved: Step S1, roughening treatment of the frame surface: The outer surface of the frame is roughened to increase the roughness of the frame surface; Step S2: dust removal of the frame: The frame roughened in step S1 is cleaned with a brush to remove dust from the surface of the frame; Step S3: Degreasing the frame: The frame that has been dust-removed in step S2 is placed in a degreasing agent at a temperature of 45°C for 20-25 minutes, and then rinsed with a large amount of clean water at 45°C; Step S4: Drying of the frame: The frame that has undergone the degreasing treatment in step S3 is placed in a cleaning center, and the surface of the frame is blown with air by a high-pressure blower to remove excess moisture and uncleaned dust on the surface of the frame; Step S5: spray painting of the frame: The frame after the processing in step S4 is spray-painted, and after spraying one side, the frame is rotated and the other side of the frame is spray-painted; Step S6, treatment after painting: The frame after the painting treatment in step S5 is placed in an air heater, slowly heated to 70-90° C. and then dried for 1.5 hours, and then heated to 165° C. and dried for 5 hours to obtain a finished product.

2. The electric bicycle body painting process according to claim 1, characterized in that: The roughening treatment in step S1 is a sandblasting process, the blasting material is glass beads, and the sandblasting speed is 35-40m / s.

3. The electric bicycle body painting process according to claim 1, characterized in that: In step S2, the degreasing agent is an aqueous solution of trisodium phosphate, and the mass fraction of trisodium phosphate is 30%-34%.

4. The electric bicycle body painting process according to claim 1, characterized in that: The cleaning center in step S3 includes a conveyor body, a plurality of movable fixed tooling is provided on the outer side of the conveyor body, a plurality of movable plates are provided on the outer side of the conveyor body, each of the fixed tooling is rotatably connected to the corresponding movable plate, a cleaning rack is fixedly connected to the upper side of the conveyor body, and an isolation cloth is fixedly connected to the front end, middle part and rear end of the cleaning rack, and the three isolation cloths divide the interior of the cleaning rack into a drying area and a wiping area, a plurality of rotating lotus nozzles are provided inside the drying area, and a rotatable wiping rack is symmetrically provided on the left and right sides of the wiping area.

5. The electric bicycle body painting process according to claim 4, characterized in that: The upper side of the conveying body is symmetrically fixedly connected with a first fixed plate and a second fixed plate, a side of the first fixed plate close to the second fixed plate is fixedly connected with a plurality of first fixed teeth, a side of the second fixed plate close to the first fixed plate is fixedly connected with a plurality of second fixed teeth, the first fixed teeth and the second fixed teeth are staggered, and the upper sides of the first fixed plate and the second fixed plate are respectively fixedly connected with a plurality of lifting rods, and the lifting rods are symmetrically arranged relative to the conveying body.

6. The process for baking varnish for an electric bicycle body according to claim 5, characterized in that: The fixed tooling includes a support frame rotatably connected to the corresponding movable plate, a hydraulic connecting pipe is fixedly connected to the inside of the support frame, a conical block is fixedly connected to the upper side of the hydraulic connecting pipe, a limit plate that can move up and down is connected to the middle of the hydraulic connecting pipe through a sliding key, a plurality of rubber strips that can extend outward are provided in the middle of the conical block, and a vibrator is fixedly connected to the middle of the support frame.

7. The baking varnish process for the electric bicycle body according to claim 6, characterized in that: A hydraulic connecting groove is provided inside the conical block, and the lower side of the hydraulic connecting groove is connected to the hydraulic connecting pipe. A hydraulic circular groove is provided in the middle of the support frame, and a plurality of connecting holes are provided on the lower side of the hydraulic connecting pipe. The interior of the hydraulic connecting pipe is connected to the hydraulic circular groove through the connecting holes. A power hydraulic cylinder is fixedly connected to the lower side of the limit plate, and the power hydraulic cylinder is placed between the hydraulic circular groove and the hydraulic connecting pipe. Each of the rubber strips is fixedly connected to two connecting rods on one side close to the central axis of the conical block, a connecting hole is opened on the conical block corresponding to the position of each connecting rod, each connecting hole is connected to the hydraulic connecting groove, and a limit block is fixedly connected to the upper side of the limit plate.

8. The process for baking varnish for an electric bicycle body according to claim 7, characterized in that: The lower side of the vibrator is electrically connected to a touch switch connected to the support frame, the lower side of the touch switch is provided with a connecting ring slidably connected to the support frame, the upper side of the connecting ring is provided with a plurality of first springs, the middle part of the support frame is fixedly connected to a position corresponding to each first spring, the upper side of each first spring abuts against the corresponding reset connecting block, the connecting ring and the lifting rod cooperate with each other to form a structure for starting the vibrator, the lower side of the support frame is fixedly connected to a rotating gear, the rotating gear cooperates with the first fixed tooth and the second fixed tooth to form a structure for rotating the support frame.

9. The electric bicycle body painting process according to claim 5, characterized in that: The upper side surfaces of the first fixing plate and the second fixing plate are both inclined surfaces, and a plurality of first drainage ports are provided at the connection points between the first fixing plate, the second fixing plate and the conveyor body, and second drainage ports connected one by one with the first drainage ports are provided on the left and right sides of the conveyor body; The interior of the drying area is fixedly connected with a plurality of air supply branches, each of the rotating lotus nozzles is connected to the corresponding air supply branch, an industrial fan is fixedly connected to the upper side of the cleaning rack, the lower side of the industrial fan is connected to an air supply main pipe, and the upper side of each air supply branch pipe is connected to the air supply main pipe.

10. The electric bicycle body painting process according to claim 4, characterized in that: The wiping frame includes a rotating frame rotatably connected to the conveying body, a motor is fixedly connected to the middle of the rotating frame, a sun gear is fixedly connected to the output end of the motor, an outer gear ring is fixedly connected to the inside of the rotating frame, a plurality of planetary gears are meshed between the sun gear and the outer gear ring, a cleaning disk is fixedly connected to the side of each planetary gear away from the motor, a cleaning cotton is detachably connected to the side of each cleaning disk away from the planetary gear through Velcro, and a plurality of wiping cotton strips are fixedly connected to the outer side of each cleaning cotton.

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