Electrophoretic coating mechanism and coating method for automobile body

Abstract

The invention discloses an automobile body electrophoretic coating mechanism and a coating method.The automobile body electrophoretic coating mechanism comprises an electrophoresis tank, an inner cavity electrophoresis enhancing assembly is fixedly arranged on the inner wall of the electrophoresis tank, the inner cavity electrophoresis enhancing assembly is composed of a movable supporting part and an anode head, and the movable supporting part is used for driving the anode head to move; the inner cavity electrophoresis enhancing assembly is designed, the inner cavity electrophoresis enhancing assembly is matched with the overturning type vehicle body fixing tool, and when a vehicle body is overturned to enter an inner cavity of the electrophoresis tank to be subjected to electrophoretic coating, the inner cavity electrophoresis enhancing assembly is matched with the overturning type vehicle body fixing tool; the movable anode head is automatically enabled to enter the vehicle body, and the anode head directly extends into the inner cavity of the vehicle body at a short distance, so that the electric field intensity of the surface of the inner cavity is greatly enhanced, the Faraday shielding effect is overcome, and it is ensured that the inner cavity wall can obtain a uniform and thick electrophoresis paint film.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile body electrophoretic coating, in particular to an automobile body electrophoretic coating mechanism. BACKGROUND

[0002] As a key process link in automobile coating production lines, electrophoretic coating plays a decisive role in the corrosion resistance and appearance quality of automobile bodies. In the process, the automobile body is immersed in an electrophoretic tank as a cathode, and the positively charged electrophoretic paint resin moves to the surface of the automobile body under the action of a direct current electric field and is deposited to form a uniform coating film.

[0003] Ordinary electrophoretic equipment usually arranges multiple fixed anodes in an electrophoretic tank for electrophoretic coating processing. However, due to the closed and semi-closed internal cavity structure of the automobile body, the "Faraday shielding effect" exists, which makes the electric field intensity inside the automobile body significantly weaker than that on the outer surface. This leads to the difficulty of the electrophoretic paint in penetrating into the internal cavity and uniformly depositing on the surface, often resulting in too thin or even no paint film covering in the internal cavity, which seriously affects the overall corrosion resistance life of the automobile body and becomes the weak link of the corrosion resistance of the whole vehicle.

[0004] That is, the prior art has the following technical problems: ordinary electrophoretic coating equipment uses fixed anodes and is affected by the "Faraday shielding effect", resulting in weak electric field in the internal cavity of the automobile body, and the electrophoretic paint is difficult to penetrate and uniformly deposit, and the internal cavity coating quality is poor. Therefore, the automobile body electrophoretic coating mechanism is proposed to solve the above problems. SUMMARY

[0005] The automobile body electrophoretic coating mechanism is provided in the embodiment to solve the problem that ordinary electrophoretic coating equipment in the prior art uses fixed anodes and is affected by the "Faraday shielding effect", resulting in poor internal cavity coating quality of the automobile.

[0006] According to one aspect of the application, an automobile body electrophoretic coating mechanism is provided, comprising: an electrophoretic tank, An internal cavity electrophoretic enhancement assembly is fixedly arranged at the inner wall of the electrophoretic tank, the internal cavity electrophoretic enhancement assembly is composed of a moving support part and an anode head, and the moving support part is used to drive the anode head to move; A turnover type vehicle body fixing tool is fixedly connected to the upper side of the electrophoretic tank, and the turnover type vehicle body fixing tool comprises: Track housings arranged on both sides of the upper end of the electrophoretic tank, Moving seats arranged on the two track housings, a rotating column rotatably connected between the two moving seats, a turnover seat fixedly connected to the rotating column, and the turnover seat used to support and fix the vehicle body; The follow-up linkage mechanism is further arranged between the turnover vehicle body fixing tool and the inner cavity electrophoresis enhancement assembly, and when the turnover seat is in a turnover state, the follow-up linkage mechanism drives the anode head to automatically move and insert the vehicle body.

[0007] Further, the upper surface of the track shell is slidably connected with a moving seat, both ends of the rotating column penetrate through the two moving seats and are rotationally connected with the moving seats, and the turnover seat is fixedly connected with a vehicle body fixing support.

[0008] Further, both ends of the rotating column are fixedly connected with a drive gear, and the side wall of the track shell is further fixedly connected with a fixed rack, and the drive gear and the fixed rack are in meshing engagement.

[0009] Further, the moving seat is driven to move by a drive assembly, and the drive assembly comprises: a moving slider arranged in the inner cavity of the track shell, the moving slider is slidably connected with the track shell, and the moving slider is fixedly connected with the moving seat; a drive screw threadedly engaged with the moving slider; a drive motor connected with the drive screw; a synchronous connecting shaft arranged between the two track shells, both ends of the synchronous connecting shaft are fixedly connected with a second bevel gear, and the arc wall of each of the two drive screws is fixedly connected with a first bevel gear, and the second bevel gear and the first bevel gear are in meshing engagement.

[0010] Further, the moving support part comprises a fixed sleeve, a moving sleeve and a support rod, the fixed sleeve is fixedly arranged at the inner cavity side wall of the electrophoresis tank, and the inner cavity of the fixed sleeve is slidably connected with the moving sleeve.

[0011] Further, a threaded sleeve is fixedly connected in the inner cavity of the moving sleeve, a rotating screw is rotationally connected in the inner cavity of the fixed sleeve, the rotating screw penetrates through the threaded sleeve and is in threaded engagement with the threaded sleeve.

[0012] Further, the inner cavity electrophoresis enhancement assembly is further provided with an adaptive extension component, comprising: a rotating seat, a moving seat, a lateral support frame and a contact roller, the rotating seat is rotationally connected with one end of the moving sleeve, the rotating seat is fixedly connected with a U-shaped fixing frame, the two side walls of the U-shaped fixing frame are fixedly connected with a fixed guide rod, the moving seat is slidably connected with the fixed guide rod, the two sides of the moving seat are fixedly connected with a connecting spring, one side wall of the moving seat is fixedly connected with a support rod, and the arc wall of the support rod is further fixedly connected with a plurality of lateral support frames, and one end of the lateral support frame is rotationally connected with the contact roller.

[0013] Further, the follow-up linkage mechanism comprises: The first rotating rod is fixedly connected with one end of the rotating screw rod, The second rotating rod is power-connected with the first rotating rod through bevel gear B and bevel gear A, and is power-connected with the synchronous connecting shaft through bevel gear C and bevel gear D.

[0014] Further, the automobile body electrophoretic coating method comprises the following steps: Step A: fixing and mounting the automobile body to be electrophoretic on the automobile body fixing support of the turnover seat; Step B: starting the driving motor, and driving the moving slide and the moving seat to move along the track shell through the driving screw rod; when the moving seat moves, the rotating column, the turnover seat fixed thereon and the automobile body are driven to turn over together through the driving gear and the fixed rack which are in mesh with each other, so that the automobile body is immersed in the electrophoretic liquid in the electrophoretic tank; Step C: while the moving seat moves, power is transmitted to the follow-up linkage mechanism through the synchronous connecting shaft; the second rotating rod of the follow-up linkage mechanism transmits the rotating motion to the first rotating rod through the bevel gear pair, and the first rotating rod drives the rotating screw rod to rotate; the rotating screw rod drives the moving sleeve and the supporting rod connected thereto to linearly extend through the thread cooperation with the threaded sleeve, so as to synchronously extend the anode head into the inner cavity of the automobile body which has completed the turnover; Step D: electrifying the electrophoretic tank, and applying an electric field between the anode head extended into the inner cavity of the automobile body and the automobile body as the cathode to perform the electrophoretic coating; Step E: after the electrophoresis is completed, the driving motor is reversely operated to reversely move the moving seat, so that the automobile body is turned over out of the electrophoretic tank and is reset; at the same time, the moving sleeve and the anode head are driven to retract and reset through the follow-up linkage mechanism, and finally the automobile body which has completed the electrophoresis is unloaded from the automobile body fixing support.

[0015] Through the above-mentioned embodiments of the present application, the inside of the helmet body can be assisted by the auxiliary heating structure, and the continuous heating can be performed during riding, so that the warm-keeping effect is better, the problem of overcooling of the head due to air inflow during riding is solved, the neck position of the wearer can be surrounded and protected from wind through the windproof surrounding structure, the warm-keeping effect is further improved, the fixing is convenient, the waterproof effect is better, and the helmet is suitable for use in rainy and snowy weather, and the problem of no protection for the neck position during riding is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 Overall structure schematic diagram of one embodiment of the present application; Figure 2 Front view structure schematic diagram of one embodiment of the present application; Figure 3 Top view structure schematic diagram of one embodiment of the present application; Figure 4 Schematic diagram of the turning-over of the turning-over vehicle body fixing tool of one embodiment of the present application before turning-over; Figure 5 Schematic diagram of the turning-over of the turning-over vehicle body fixing tool of one embodiment of the present application after turning-over; Figure 6 Connection overall schematic diagram of the inner cavity electrophoresis enhancement assembly of one embodiment of the present application; Figure 7 Structure schematic diagram of the driving assembly of one embodiment of the present application; Figure 8 Top view structure schematic diagram of the driving assembly of one embodiment of the present application; Figure 9 Specific structure schematic diagram of the inner cavity electrophoresis enhancement assembly of one embodiment of the present application; Figure 10 Internal structure schematic diagram of the inner cavity electrophoresis enhancement assembly of one embodiment of the present application.

[0018] In the figure: 1, electrophoresis tank; 2, turning-over vehicle body fixing tool; 201, track shell; 202, support frame; 203, moving seat; 204, rotating column; 205, turning-over seat; 206, vehicle body fixing support; 207, driving gear; 208, fixed rack; 3, driving assembly; 301, moving sliding block; 302, driving screw; 303, driving motor; 304, first bevel gear; 305, second bevel gear; 306, synchronous connecting shaft; 4, inner cavity electrophoresis enhancement assembly; 401, fixed sleeve; 402, moving sleeve; 403, rotating seat; 404, U-shaped fixing frame; 405, fixed guide rod; 406, connecting spring; 407, moving seat; 408, supporting rod; 409, anode head; 410, threaded sleeve; 411, rotating screw; 412, sealing ring; 413, lateral support frame; 414, contact roller; 5, follow-up linkage mechanism; 501, first rotating rod; 502, bevel gear A; 503, second rotating rod; 504, bevel gear B; 505, bevel gear C; 506, bevel gear D. DETAILED DESCRIPTION

[0019] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0020] Please refer to Figure 1 As shown in the figure, the automobile body electrophoresis coating mechanism comprises an electrophoresis tank 1, The inner wall of the electrophoresis tank 1 is fixedly provided with an inner cavity electrophoresis enhancement assembly 4, which is composed of a moving support part and an anode head 409, and the moving support part is used to drive the anode head 409 to move; The upper side of the electrophoresis tank 1 is fixedly connected with a turnover vehicle body fixing tool 2, which comprises: The track shells 201 are arranged on the upper ends of the two sides of the electrophoresis tank 1, The moving seats 203 are arranged on the two track shells 201, and the rotating column 204 is rotatably connected between the two moving seats 203, the rotating column 204 is fixedly connected with the turnover seat 205, and the turnover seat 205 is used to support and fix the vehicle body; The follow-up linkage mechanism 5 is further arranged between the turnover vehicle body fixing tool 2 and the inner cavity electrophoresis enhancement assembly 4, so that when the turnover seat 205 is in the turnover state, the follow-up linkage mechanism 5 drives the anode head 409 to move automatically and insert into the vehicle body.

[0021] In order to solve the problem that the electric field intensity generated by the ordinary fixed anode in the inner cavity of the vehicle body is weak due to the influence of the "Faraday shielding effect" when the ordinary electrophoresis equipment is used for electrophoresis coating processing of the vehicle body, and the electrophoretic paint is difficult to penetrate and deposit uniformly, the inner cavity electrophoresis enhancement assembly 4 is designed, which cooperates with the turnover vehicle body fixing tool 2 to automatically make the movable anode head 409 enter the inside of the vehicle body when the vehicle body is turned over to enter the inner cavity of the electrophoresis tank 1 for electrophoresis coating, and the anode head is directly and closely inserted into the inner cavity of the vehicle body, which greatly enhances the electric field intensity of the inner cavity surface, overcomes the "Faraday shielding effect", and ensures that the inner cavity wall can obtain uniform and thick electrophoretic paint film.

[0022] As a specific technical solution, please refer to Figure 1 And Figure 2As shown, the bottom of the track shell 201 is fixedly connected with a support frame 202 for stable support, the upper surface of the track shell 201 is slidably connected with a moving seat 203, the two ends of the rotating column 204 respectively penetrate through the two moving seats 203 and are rotationally connected with the moving seats 203, the arc-shaped wall of the rotating column 204 is fixedly connected with a turnover seat 205, the turnover seat 205 is fixedly connected with a vehicle body fixing support 206, the vehicle body fixing support 206 is used for supporting and fixing the vehicle body, by the technical scheme, please refer to Figure 4 and Figure 5 As shown, when the rotating column 204 rotates, the turnover seat 205 and the vehicle body fixing support 206 can be automatically driven to overturn, and the overturning of the vehicle body fixing support 206 can drive the vehicle body to overturn, so that the vehicle body overturns into the inner cavity of the electrophoresis tank 1 and is subjected to electrophoretic coating processing.

[0023] As a preferred technical scheme, please refer to Figure 4 and Figure 5 As shown, the two ends of the rotating column 204 are fixedly connected with a driving gear 207, and the side wall of the track shell 201 is also fixedly connected with a fixed rack 208, the driving gear 207 and the fixed rack 208 are in meshing relationship, by the technical scheme, please refer to Figure 4 and Figure 5 As shown, when the moving seat 203 moves to the right, the driving gear 207 can be driven to move to the right, and due to the meshing relationship between the driving gear 207 and the fixed rack 208, the driving gear 207 is automatically rotated, thereby driving the rotating column 204 to rotate, so that the vehicle body fixing support 206 overturns, realizing the overturning function of the vehicle body, and when the electrophoresis is completed, the moving seat 203 is moved to the left, thereby automatically driving the vehicle body fixing support 206 to overturn and reset, so that the vehicle body overturns and resets and is automatically separated from the inner cavity of the electrophoresis tank 1.

[0024] As a further technical scheme, please refer to Figure 6 and Figure 7 As shown, the moving seat 203 is driven to move by a driving assembly 3, and the driving assembly 3 comprises: A moving slider 301 arranged in the inner cavity of the track shell 201, the moving slider 301 is slidably connected with the track shell 201, and the moving slider 301 is fixedly connected with the moving seat 203; A driving screw 302 in screwing relationship with the moving slider 301, and the two ends of the driving screw 302 are rotationally connected with the inner wall of the track shell 201; A driving motor 303 connected with the driving screw 302 is fixedly arranged at one end of the track shell 201, and the output shaft end of the driving motor 303 is fixedly connected with one end of the driving screw 302. A synchronous connecting shaft 306 is arranged between the two track shells 201, both ends of the synchronous connecting shaft 306 extend into the inner cavities of the two track shells 201 and are rotationally matched with the track shells 201, both ends of the synchronous connecting shaft 306 are fixedly connected with second bevel gears 305, the arc-shaped walls of the two driving screws 302 are fixedly connected with first bevel gears 304, the second bevel gears 305 and the first bevel gears 304 are meshed with each other, through the technical scheme, the driving motor 303 can drive the driving screw 302 to rotate, thereby driving the moving slider 301 to move, and the rotation of the driving screw 302 can also drive the power to be synchronously transmitted to the driving screw 302 on the other side through the first bevel gears 304, the second bevel gears 305 and the synchronous connecting shaft 306, so that the driving screws 302 on the two sides move synchronously, and the moving sliders 301 on the two sides move synchronously, so that the turnover type vehicle body fixing tool 2 can move more stably.

[0025] Specifically, the driving motor 303 is a servo motor or a stepping motor, the output torque is not less than 50 N·m, the rotating speed range is 0~100 r / min, and a reducer is arranged to improve the output torque.

[0026] As a preferred technical scheme, please refer to Figure 9 and Figure 10 As shown in the drawings, the moving support part includes a fixed sleeve 401, a moving sleeve 402 and a support rod 408, the fixed sleeve 401 is fixedly arranged at the inner cavity side wall of the electrophoresis tank 1, the moving sleeve 402 is slidably connected in the inner cavity of the fixed sleeve 401, the moving sleeve 402 is connected with the support rod 408, one end of the support rod 408 is fixedly connected with an anode head 409, through the technical scheme, the movement of the moving sleeve 402 can drive the support rod 408 to move, thereby driving the anode head 409 to move, and the moving insertion function of the anode head 409 is realized, so that the anode head 409 extends into the vehicle body, the electric field intensity of the inner cavity surface is enhanced, the "Faraday shielding effect" is overcome, the uniform and thick electrophoretic paint film of the inner cavity wall is ensured, and the corrosion resistance of the vehicle body is improved.

[0027] As a further technical scheme, please refer to Figure 10As shown in the figure, the inner cavity of the moving sleeve 402 is fixedly connected with a threaded sleeve 410, the inner cavity of the fixed sleeve 401 is rotatably connected with a rotating screw 411, the rotating screw 411 penetrates through the threaded sleeve 410 and is in threaded cooperation with the threaded sleeve 410, through the rotation of the rotating screw 411, the threaded sleeve 410 can be driven to move, thereby driving the moving sleeve 402 to move, realizing the telescopic function of the moving sleeve 402.

[0028] Further, the moving sleeve 402 and the fixed sleeve 401 are fixedly provided with a sealing ring 412, which serves as a sealing function, the outer wall of the moving sleeve 402 is provided with a guide sliding groove, the inner wall of the fixed sleeve 401 is provided with a guide protrusion, the guide protrusion and the guide sliding groove are in sliding cooperation, forming a linear guide structure, which ensures the linear movement function of the moving sleeve 402 and avoids deflection.

[0029] As a preferred technical solution, please refer to Figure 9 and Figure 10 As shown in the figure, the inner cavity electrophoresis enhanced assembly 4 is further provided with a self-adaptive extension component, which comprises a rotating seat 403, a moving seat 407, a lateral support frame 413 and a contact roller 414, the rotating seat 403 is rotatably connected with one end of the moving sleeve 402, the rotating seat 403 is fixedly connected with a U-shaped fixing frame 404, the two side walls of the U-shaped fixing frame 404 are fixedly connected with a fixed guide rod 405, the moving seat 407 is slidably connected with the fixed guide rod 405, the two sides of the moving seat 407 are fixedly connected with a connecting spring 406, one side of the moving seat 407 is fixedly connected with a support rod 408, the arc-shaped wall of the support rod 408 is further fixedly connected with a plurality of lateral support frames 413, one end of the lateral support frame 413 is rotatably connected with the contact roller 414, through the technical solution, when the anode head 409 extends into the vehicle body, due to the different sizes of the internal space of different models of vehicle bodies, through the setting of the contact roller 414, when encountering an insurmountable obstacle after extending into the vehicle body, the anode head 409 can be automatically driven to move through extrusion, effectively avoiding the damage of mechanical collision to the equipment and the vehicle body, which is safe and reliable.

[0030] Preferably, the elastic coefficient of the connecting spring 406 is 10-20 N / mm, and the pre-pressing amount is 5-10 mm, so as to ensure that the anode head 409 can retreat in time when encountering an obstacle, specifically, the contact roller 414 is made of nylon or polyurethane material, the outer diameter is 30-50 mm, and the surface is smooth without burrs, so as to avoid scratching the inner wall of the vehicle body.

[0031] As a further technical solution, please refer to Figure 9 As shown in the figure, the follow-up linkage mechanism 5 comprises: A first rotating rod 501, one end of the first rotating rod 501 extends into the inner cavity of the fixed sleeve 401 and is fixedly connected with one end of the rotating screw rod 411, the first rotating rod 501 is rotationally connected with the fixed sleeve 401, A second rotating rod 503, the second rotating rod 503 is arranged at the outer wall of the electrophoresis tank 1, the second rotating rod 503 is connected with the electrophoresis tank 1 through a support, the second rotating rod 503 is rotationally connected with the support, the second rotating rod 503 is power-connected with the first rotating rod 501 through bevel gear B 504 and bevel gear A 502, the second rotating rod 503 is power-connected with the synchronous connecting shaft 306 through bevel gear C 505 and bevel gear D 506, through the technical scheme, when the synchronous connecting shaft 306 rotates, the second rotating rod 503 is driven to rotate through bevel gear D 506 and bevel gear C 505, the first rotating rod 501 is driven to rotate through bevel gear B 504 and bevel gear A 502 by the second rotating rod 503, thereby automatically driving the moving sleeve 402 to move, realizing the moving extension function of the anode head 409. The above technical scheme uses the kinetic energy of the body turning over as the only power source, realizes the synchronous movement of the anode head 409, does not need additional motors, sensors or control systems, has simple structure, strong anti-interference ability and corrosion resistance.

[0032] The automobile body electrophoretic coating method comprises the following steps: Step A: fixing and installing the body to be electrophoretic on the body fixing support 206 of the turnover seat 205; Step B: starting the driving motor 303, the driving motor 303 drives the moving slider 301 and the moving seat 203 to move along the rail shell 201 through the driving screw rod 302; when the moving seat 203 moves, the rotating column 204, the turnover seat 205 and the body fixed thereon are driven to turn over together through the driving gear 207 and the fixed rack 208 which are meshed with each other, so that the body is immersed in the electrophoretic liquid in the electrophoresis tank 1; Step C: while the moving seat 203 moves, power is transmitted to the follow-up linkage mechanism 5 through the synchronous connecting shaft 306; the second rotating rod 503 of the follow-up linkage mechanism 5 transmits the rotating motion to the first rotating rod 501 through the bevel gear pair, the first rotating rod 501 drives the rotating screw rod 411 to rotate; the rotating screw rod 411 drives the moving sleeve 402 and the supporting rod 408 connected therewith to linearly extend through the thread cooperation with the threaded sleeve 410, so as to synchronously extend the anode head 409 into the inner cavity of the body which has been turned over; Step D: power is supplied to the electrophoresis tank 1, an electric field is applied between the anode head 409 extending into the inner cavity of the body and the body as the cathode, and electrophoretic coating is carried out; Step E: after the electrophoresis is completed, the motor 303 is reversely driven to reversely move the moving seat 203, so that the vehicle body is turned out of the electrophoresis tank 1 and is reset; meanwhile, the moving sleeve 402 and the anode head 409 are driven to retract and reset through the follow-up linkage mechanism 5, and finally the vehicle body after the electrophoresis is completed is unloaded from the vehicle body fixing support 206.

[0033] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made by those skilled in the art based on the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automotive body electrophoretic painting mechanism comprising: An electrophoresis tank (1); The inner wall of the electrophoresis tank (1) is fixedly provided with an inner cavity electrophoresis enhancement assembly (4), the inner cavity electrophoresis enhancement assembly (4) is composed of a moving support part and an anode head (409), and the moving support part is used for driving the anode head (409) to move. The upper side of the electrophoresis tank (1) is fixedly connected with a turnover vehicle body fixing tool (2), and the turnover vehicle body fixing tool (2) comprises: Track housings (201) arranged on both sides of the upper end of the electrophoresis tank (1), Moving seats (203) arranged on the two track housings (201), and a rotating column (204) rotatably connected between the two moving seats (203), wherein the rotating column (204) is fixedly connected with a turnover seat (205), and the turnover seat (205) is used for supporting and fixing the vehicle body. The turnover vehicle body fixing tool (2) and the inner cavity electrophoresis enhancement assembly (4) are further provided with a follow-up linkage mechanism (5), so that when the turnover seat (205) is in a turnover state, the follow-up linkage mechanism (5) drives the anode head (409) to automatically move and insert into the vehicle body.

2. The automotive body electrophoretic painting mechanism according to claim 1, characterized by: The upper surface of the track housing (201) is slidably connected with the moving seat (203), the two ends of the rotating column (204) respectively penetrate through the two moving seats (203) and are rotatably connected with the moving seats (203), and the turnover seat (205) is fixedly connected with a vehicle body fixing support (206).

3. The automotive body electrophoretic painting mechanism according to claim 1, characterized by: The two ends of the rotating column (204) are fixedly connected with drive gears (207), and the side wall of the track housing (201) is further fixedly connected with a fixed rack (208), and the drive gears (207) and the fixed rack (208) are in meshing connection.

4. The automotive body electrophoretic painting mechanism according to claim 1, characterized by: The moving seat (203) is driven to move by a driving assembly (3), and the driving assembly (3) comprises: A moving slider (301) arranged in the inner cavity of the track housing (201), which is slidably connected with the track housing (201), and is fixedly connected with the moving seat (203); A drive screw (302) in screw connection with the moving slider (301); A drive motor (303) connected with the drive screw (302); A synchronous connecting shaft (306) arranged between the two track housings (201), the two ends of the synchronous connecting shaft (306) are fixedly connected with second bevel gears (305), the arc walls of the two drive screws (302) are fixedly connected with first bevel gears (304), and the second bevel gears (305) and the first bevel gears (304) are in meshing connection.

5. The automotive body electrophoretic painting mechanism according to claim 1 or 4, characterized by: The moving support part comprises a fixed sleeve (401), a moving sleeve (402) and a supporting rod (408), the fixed sleeve (401) is fixedly arranged at the inner cavity side wall of the electrophoresis tank (1), and the inner cavity of the fixed sleeve (401) is slidably connected with the moving sleeve (402).

6. The automotive body electrophoretic painting mechanism according to claim 5, characterized by: A threaded sleeve (410) is fixedly connected in the inner cavity of the moving sleeve (402), and a rotating screw rod (411) is rotatably connected in the inner cavity of the fixed sleeve (401), and the rotating screw rod (411) penetrates through the threaded sleeve (410) and is in threaded connection with the threaded sleeve (410).

7. The automotive body electrophoretic painting mechanism according to claim 6, characterized by: The inner cavity electrophoresis enhancing component (4) is further provided with a self-adaptive extension component, which comprises a rotating seat (403), a moving seat (407), lateral support frames (413) and contact rollers (414), the rotating seat (403) is rotatably connected to one end of the moving sleeve (402), a U-shaped fixing frame (404) is fixedly connected to the rotating seat (403), fixed guide rods (405) are fixedly connected between the two side walls of the U-shaped fixing frame (404), the moving seat (407) is slidably connected to the fixed guide rods (405), connecting springs (406) are fixedly connected to the two sides of the moving seat (407), a support rod (408) is fixedly connected to one side wall of the moving seat (407), and a plurality of lateral support frames (413) are fixedly connected to the arc-shaped wall of the support rod (408), and one end of each lateral support frame (413) is rotatably connected with a contact roller (414).

8. The automotive body electrophoretic painting mechanism according to claim 1, characterized by: The follow-up linkage mechanism (5) comprises: a first rotating rod (501) which extends to the inner cavity of the fixed sleeve (401) and is fixedly connected with one end of the rotating screw rod (411), a second rotating rod (503) which is in power connection with the first rotating rod (501) through bevel gear B (504) and bevel gear A (502), and is in power connection with the synchronous connecting shaft (306) through bevel gear C (505) and bevel gear D (506).

9. The automotive body electrophoretic painting mechanism according to any one of claims 1 to 8, leading to an automotive body electrophoretic painting method, characterized in that: The automobile body electrophoresis coating method comprises the following steps: Step A: fixing and mounting the automobile body to be electrophoresed on the automobile body fixing support (206) of the turnover seat (205); Step B: starting the driving motor (303), and driving the moving slider (301) and the moving seat (203) to move along the track shell (201) through the driving motor (303) and the driving screw rod (302); when the moving seat (203) moves, the rotating column (204), the turnover seat (205) fixed thereon and the automobile body are driven to rotate together through the driving gear (207) and the fixed rack (208) which are in mesh with each other, so that the automobile body is immersed in the electrophoretic solution in the electrophoresis tank (1); Step C: while the moving seat (203) moves, power is transmitted to the follow-up linkage mechanism (5) through the synchronous connecting shaft (306); the second rotating rod (503) of the follow-up linkage mechanism (5) transmits the rotating motion to the first rotating rod (501) through the bevel gear pair, and the first rotating rod (501) drives the rotating screw rod (411) to rotate; the rotating screw rod (411) drives the moving sleeve (402) and the support rod (408) connected thereto to linearly extend through the threaded connection with the threaded sleeve (410), so that the anode head (409) is synchronously extended into the inner cavity of the automobile body which has been rotated; Step D: power is supplied to the electrophoresis tank (1), an electric field is applied between the anode head (409) extending into the inner cavity of the vehicle body and the vehicle body as the cathode, and electrophoretic coating is performed; Step E: after the electrophoresis is completed, the motor (303) is driven to operate reversely, the moving seat (203) is reversely moved, the vehicle body is turned over out of the electrophoresis tank (1) and is reset, at the same time, the moving sleeve (402) and the anode head (409) are driven to retract and reset through the follow-up linkage mechanism (5), and finally the vehicle body after the electrophoresis is completed is unloaded from the vehicle body fixing support (206).

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