Electrophoretic coating equipment and coating method for automobile metal trim strips

Abstract

The present invention discloses an electrophoretic coating device and a coating method for automobile metal trim strips, which belong to the technical field of automobile metal accessories processing, and include an electrophoretic pool, both sides of the inner cavity of the electrophoretic pool are provided with slidable mobile frames, the top of the mobile frame is fixedly connected with a fixed box, the inner cavity of the mobile frame is provided with an opening and closing assembly, and the opening and closing assembly includes a plurality of rotating columns rotatably connected to the inner cavity of the mobile frame, and the surface of the rotating column is fixedly connected with a stripping filter plate. The present invention strips out a clean electrophoretic position for the electrophoretic processing of the metal trim strips through the coordinated use of the mobile frame, the opening and closing assembly and the mobile assembly, and moves the hanger to the electrophoretic position through the coordinated use of the gantry, the crane and the lifting frame, and at the same time, the electrophoretic liquid between the two mobile frames is filtered through the coordinated use of the filter box and the filter assembly, so as to achieve the purpose of effectively stripping impurities in the electrophoretic liquid and automatically shaping a clean electrophoretic space.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile metal parts processing, and in particular relates to an electrophoretic coating device for automobile metal trim strips and a coating method thereof. Background Art

[0002] Car decorative strips are parts used for car exterior decoration, usually made of plastic, rubber, metal and other materials. They can be installed in various parts of the car body to beautify the car's appearance and protect the body. Electrophoretic coating is a surface treatment technology, mainly used on the surface of metals, plastics and other materials. It deposits a uniform thin film on the surface of the object by electrophoresis. It combines the two process of electrophoresis and coating, and can effectively change the performance and appearance of the material surface.

[0003] The electrophoretic liquid used in the electrophoretic process is a recycled liquid. After long-term use, impurities in the electrophoretic liquid may cause uneven color on the product surface and affect the color stability. Solid particle impurities in the electrophoretic liquid will make the product surface rough and uneven, produce granular protrusions, and form obvious defects on the product surface. For this reason, it is necessary to provide an automotive metal trim electrophoretic coating equipment and a coating method thereof, which adopts a two-way stripping method, performs stripping operations before each electrophoresis, and filters the electrophoretic position at the same time, which can reduce the impurity content at the electrophoretic position again and improve the electrophoresis effect on the product. Summary of the invention

[0004] The purpose of the present invention is to provide an electrophoretic coating device and a coating method for automobile metal trim strips, which adopts a two-way stripping method, performs a stripping operation before each electrophoresis, and simultaneously performs a filtering operation on the electrophoresis position, which can further reduce the impurity content at the electrophoresis position and improve the electrophoresis effect on the product, so as to solve the above-mentioned technical problems.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: an electrophoretic coating device for automobile metal trim strips, comprising an electrophoretic pool: slidable movable frames are arranged on both sides of the inner cavity of the electrophoretic pool, a fixed box is fixedly connected to the top of the movable frame, an opening and closing assembly is arranged in the inner cavity of the movable frame, and the opening and closing assembly comprises a plurality of rotating columns rotatably connected to the inner cavity of the movable frame, a stripping filter plate is fixedly connected to the surface of the rotating column, and synchronous gears are fixedly connected to the surfaces of the two rotating columns located in the middle, and the two synchronous gears are meshed with each other, a worm gear is arranged in the inner cavity of the fixed box, and the worm gear is fixedly connected to the surface of the rotating column, and a first A stepper motor, the inner cavity of the fixed box is rotatably connected to a worm, the worm is meshed with a worm wheel, one end of the worm passes through the outside of the fixed box and is fixedly connected to the output shaft of the first stepper motor, a moving component is provided on the top of the movable frame, the front and rear sides of the electrostatic pool are fixedly connected to a filter box, the inner cavity of the filter box is provided with a filter component, a movable gantry is provided above the electrostatic pool, a crane is fixedly installed on the top of the inner cavity of the gantry, a lift frame is provided in the inner cavity of the gantry, a hanging frame is hung at the bottom of the lift frame, the top of the lift frame is fixedly connected to the lifting chain of the crane, and a plurality of metal decorative strips are engaged with the surface of the hanging frame.

[0006] Preferably, the bottom end of the rotating column passes through the bottom of the moving frame and is fixedly connected to a rotating member, and connecting plates are provided on the front and rear sides of the bottom of the moving frame, and the bottom end of the rotating member is rotatably connected to the connecting plates.

[0007] Preferably, the moving assembly includes a plurality of supporting sleeves fixedly connected to the top of the moving frame, the inner cavity of the supporting sleeves is rotatably connected to a rotating rod, the front and rear ends of the rotating rod are fixedly connected to gears, the front and rear sides of the top of the electric pool are paved with racks, and the gears and racks are meshed with each other.

[0008] Preferably, a second stepper motor is fixedly installed on the bottom of one side of the fixed box, a force-bearing bevel gear is fixedly connected to the surface of the rotating rod, an output shaft of the second stepper motor passes through the inner cavity of the fixed box and is fixedly connected to a driving bevel gear, and the force-bearing bevel gear and the driving bevel gear are meshed.

[0009] Preferably, the filter assembly includes a water pump fixedly mounted on one side of the filter box close to the electric pool, arc-shaped grooves are provided on the front and rear sides of the inner cavity of the electric pool, an extraction pipe is installed in the inner cavity of the arc-shaped groove, the top end of the extraction pipe is connected to the water inlet end of the water pump, and the water outlet end of the water pump is connected to the outlet pipe.

[0010] Preferably, the inner cavity of the filter box is fixedly connected to a support frame, a filter plate is installed on the top of the support frame, and an inclined guide plate is fixedly connected to the bottom of the inner cavity of the filter box. Both ends of the filter box close to the electric pool are fixedly connected to return pipes, one end of the return pipe is connected to the inner cavity of the filter box, and the other end of the return pipe passes through the inner cavity of the electric pool.

[0011] Preferably, a drain trough is provided on a side of the filter box away from the electrothermal pool, and the bottom of the inner cavity of the drain trough is flush with the top of the filter plate.

[0012] Preferably, support wheels are fixedly mounted on the front and rear sides of the bottom of the movable frame, and walking tracks matching the support wheels are laid on the front and rear sides of the bottom of the inner cavity of the electric pool.

[0013] Preferably, the front and rear sides of the inner cavity of the electrothermal pool are fixedly connected with two limiting guide rails, and the front and rear sides of the movable frame are embedded with two sliding seats, and the sliding seats are slidably connected to the surfaces of the limiting guide rails.

[0014] A method for electrophoretic coating of automobile metal trim strips, the coating method steps are as follows:

[0015] Step 1, first open the gantry, and drive the hanging frame to the center position of the electrophoretic pool through the movement of the gantry, then the second stepper motor is turned on and drives the driving bevel gear to rotate, because the driving bevel gear and the force bevel gear are in a meshing transmission state, the driving bevel gear drives the force bevel gear and the rotating rod to rotate, and the rotating rod drives the gear to rotate during the rotation of the gear, and because the gear and the rack are in a meshing transmission state, the gear drives the moving frame to slide in the inner cavity of the electrophoretic pool during the rotation process, and at this time, the two moving frames move back to back at the same time, so that the two moving frames drive the rotating column to move, and the impurities in the electrophoretic liquid are stripped by the rotating column and filtered on both sides of the inner cavity of the electrophoretic pool, and then, with the cooperation of the crane and the lifting frame, the hanging frame is moved downward, so that the hanging frame reaches the inner cavity of the electrophoretic pool, and is between the two moving frames for electrophoretic coating;

[0016] Step 2. After the electrophoretic coating is completed, the crane and the lifting frame are used together to drive the hanging frame to rise, and the hanging frame is separated from the inner cavity of the electrophoretic pool. Then the first stepper motor is turned on and drives the worm to rotate. Under the meshing transmission state of the worm and the worm wheel, the worm wheel rotates and drives the rotating column to rotate. At the same time, the two stripping filter plates are in meshing transmission rotation. Under the transmission action of the worm wheel, the two synchronous gears rotate in reverse, thereby causing the two rotating columns in the middle to rotate in reverse. At the same time, the two rotating columns in the middle drive the rotating parts at their bottom ends to rotate during the rotation process. Under the transmission action of the connecting plate, multiple rotating columns are simultaneously When the two moving frames are close to each other, the first stepper motor is turned on and rotates in the opposite direction, so that the worm, the worm wheel and the two rotating columns in the middle rotate in the opposite direction, so that the rotating column and the stripping filter plate rotate in the inner cavity of the moving frame, and then the rotating column closes the inner cavity of the moving frame, and then the rotating column closes the inner cavity of the moving frame, and a relatively closed state is generated between the two moving frames;

[0017] Step 3: Then the water pump is turned on, and the water pump extracts the electrophoresis liquid between the two movable racks through the extraction pipe, and transports the electrophoresis liquid to the top of the filter plate with the cooperation of the outlet pipe. At this time, under the filtering action of the filter plate, the impurities in the electrophoresis liquid are retained on the top of the filter plate, and the filtered electrophoresis liquid enters the inner cavity of the filter box, and is re-input into the inner cavity of the electrophoresis pool with the cooperation of the return pipe, so that the impurities between the two movable racks can be removed and wait for the secondary electrophoresis treatment.

[0018] The beneficial effects of the present invention are as follows: the present invention, through the coordinated use of a movable frame, an opening and closing assembly and a movable assembly, peels out a clean electrophoresis position for the electrophoresis processing of a metal decorative strip, and through the coordinated use of a gantry, a crane and a lifting frame, moves the hanger to the electrophoresis position, and at the same time, through the coordinated use of a filter box and a filter assembly, filters the electrophoresis liquid between the two movable frames, thereby achieving the purpose of effectively peeling off impurities in the electrophoresis liquid and automatically shaping a clean electrophoresis space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only exemplary and do not limit the present invention, wherein:

[0020] Figure 1 A front cross-sectional view of an embodiment of the present invention;

[0021] Figure 2It is a three-dimensional schematic diagram of an electrophoresis pool, a mobile frame, a fixed box, a mobile component and a filter component according to an embodiment of the present invention;

[0022] Figure 3 It is a three-dimensional schematic diagram of a moving frame, an opening and closing assembly and a moving assembly according to an embodiment of the present invention;

[0023] Figure 4 A three-dimensional cross-sectional view of a moving frame, an opening and closing assembly and a moving assembly according to an embodiment of the present invention;

[0024] Figure 5 It is a three-dimensional exploded view of an opening and closing component and a moving component of an embodiment of the present invention;

[0025] Figure 6 A three-dimensional cross-sectional view of a movable frame and an opening and closing assembly according to an embodiment of the present invention;

[0026] Figure 7 A three-dimensional schematic diagram of a filter box and a filter assembly according to an embodiment of the present invention;

[0027] Figure 8 It is a three-dimensional exploded view of a filter box and a filter assembly according to an embodiment of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Electric pool, 2. Mobile frame, 3. Fixed box, 4. Opening and closing assembly, 41. Rotating column, 42. Stripping filter plate, 43. Rotating part, 44. Connecting plate, 45. Synchronous gear, 46. Worm gear, 47. First stepper motor, 48. Worm, 5. Moving assembly, 51. Support sleeve, 52. Rotating rod, 53. Gear, 54. Rack, 55. Forced bevel gear, 56. Second stepper motor, 57. Driving bevel gear, 6. Filter box, 7. Filter assembly, 71. Water pump, 72. Extraction pipe, 73. Arc groove, 74. Outlet pipe, 75. Support frame, 76. Filter plate, 77. Inclined guide plate, 78. Return pipe, 79. Sewage trough, 8. Support wheel, 9. Walking track, 10. Limiting guide rail, 11. Sliding seat, 12. Gantry, 13. Crane, 14. Lifting frame, 15. Hanging rack. DETAILED DESCRIPTION

[0030] Hereinafter, embodiments of the electrophoretic coating device and coating method for automobile metal trim strips of the present invention will be described with reference to the accompanying drawings.

[0031] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be interpreted as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0032] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0033] Embodiment one: Figure 1-8The electrophoretic coating device for automobile metal trim strips of an embodiment of the present invention is shown, comprising an electrophoretic tank 1: slidable moving frames 2 are arranged on both sides of the inner cavity of the electrophoretic tank 1, support wheels 8 are fixedly installed on the front and rear sides of the bottom of the moving frames 2, and walking tracks 9 adapted to the support wheels 8 are laid on the front and rear sides of the inner cavity of the electrophoretic tank 1. Two limiting guide rails 10 are fixedly connected to the front and rear sides of the inner cavity of the electrophoretic tank 1, and two sliding seats 11 are embedded and arranged on the front and rear sides of the moving frames 2. The sliding seats 11 are slidably connected to the surface of the limiting guide rails 10, and the top of the moving frames 2 is fixed. The movable frame 2 is fixedly connected with a fixed box 3, and the inner cavity of the movable frame 2 is provided with an opening and closing assembly 4, which includes a plurality of rotating columns 41 rotatably connected to the inner cavity of the movable frame 2, and the surface of the rotating column 41 is fixedly connected with a stripping filter plate 42, and the bottom end of the rotating column 41 passes through the bottom of the movable frame 2 and is fixedly connected with a rotating member 43, and the front and rear sides of the bottom of the movable frame 2 are provided with connecting plates 44, and the bottom end of the rotating member 43 is rotatably connected with the connecting plate 44. Through the coordinated use of the rotating member 43 and the connecting plate 44, a linkage effect is played between the plurality of rotating columns 41, so that the two positions in the middle are connected. During the rotation process, each rotating column 41 can drive all the rotating columns 41 to rotate simultaneously, thereby simultaneously controlling the opening and closing of the stripping filter plate 42. The surfaces of the two rotating columns 41 in the middle are fixedly connected with synchronous gears 45, and the two synchronous gears 45 are meshed with each other. The inner cavity of the fixed box 3 is provided with a worm gear 46, and the worm gear 46 is fixedly connected to the surface of the rotating column 41. A first stepper motor 47 is fixedly installed on the top of one side of the fixed box 3. The inner cavity of the fixed box 3 is rotatably connected with a worm 48, and the worm 48 is meshed with the worm gear 46. One end of the worm 48 penetrates to the outer surface of the fixed box 3. The movable frame 2 is fixedly connected to the output shaft of the first stepper motor 47, a movable component 5 is arranged on the top of the movable frame 2, a filter box 6 is fixedly connected to the front and rear sides of the electrostatic pool 1, a filter component 7 is arranged in the inner cavity of the filter box 6, a movable gantry 12 is arranged above the electrostatic pool 1, a crane 13 is fixedly installed on the top of the inner cavity of the gantry 12, a lift frame 14 is arranged in the inner cavity of the gantry 12, a hanger 15 is hung at the bottom of the lift frame 14, the top of the lift frame 14 is fixedly connected to the hanging chain of the crane 13, and a plurality of metal decorative strips are engaged with the surface of the hanger 15.

[0034] Embodiment 2: It is basically the same as Embodiment 1, and furthermore, the moving assembly 5 includes a plurality of supporting sleeves 51 fixedly connected to the top of the moving frame 2, the inner cavity of the supporting sleeves 51 is rotatably connected to a rotating rod 52, the front and rear ends of the rotating rod 52 are fixedly connected to gears 53, the front and rear sides of the top of the electric pool 1 are paved with racks 54, the gears 53 and the racks 54 are meshed, a second stepping motor 56 is fixedly installed at the bottom of one side of the fixed box 3, a force-bearing bevel gear 55 is fixedly connected to the surface of the rotating rod 52, and the second stepping motor The output shaft of the machine 56 passes through the inner cavity of the fixed box 3 and is fixedly connected to the driving bevel gear 57. The force-bearing bevel gear 55 and the driving bevel gear 57 are meshed with each other. Through the setting of the moving component 5, the rotating rod 52 is driven to rotate under the drive of the second stepping motor 56 and the coordinated use of the force-bearing bevel gear 55 and the driving bevel gear 57. At the same time, under the coordinated use of the gear 53 and the rack 54, the moving frame 2 is driven to move in the inner cavity of the electrostatic pool 1, and then the stripping filter plate 42 can be driven to strip impurities in the inner cavity of the electrostatic pool 1.

[0035] Embodiment 3: It is basically the same as Embodiment 1, and furthermore, the filter assembly 7 includes a water pump 71 fixedly mounted on the side of the filter box 6 close to the electrothermal pool 1, arc-shaped grooves 73 are provided on the front and rear sides of the inner cavity of the electrothermal pool 1, an extraction pipe 72 is installed in the inner cavity of the arc-shaped groove 73, the top end of the extraction pipe 72 is connected to the water inlet end of the water pump 71, and the water outlet end of the water pump 71 is connected to the outlet pipe 74, the inner cavity of the filter box 6 is fixedly connected to a support frame 75, a filter plate 76 is installed on the top of the support frame 75, an inclined guide plate 77 is fixedly connected to the bottom of the inner cavity of the filter box 6, and both ends of the filter box 6 close to the electrothermal pool 1 are fixedly connected to a return pipe 78, and one end of the return pipe 78 is connected to the inner cavity of the filter box 6 The other end of the return pipe 78 penetrates into the inner cavity of the electrophoretic pool 1. A drain trough 79 is provided on the side of the filter box 6 away from the electrophoretic pool 1. The bottom of the inner cavity of the drain trough 79 is flush with the top of the filter plate 76. Through the setting of the filter assembly 7, the electrophoretic liquid between the two movable racks 2 is extracted and transported to the top of the filter plate 76 by the coordinated use of the water pump 71, the extraction pipe 72 and the outlet pipe 74. The electrophoretic liquid is filtered by the filter plate 76, and the filtered electrophoretic liquid is re-transported to the inner cavity of the electrophoretic pool 1 by the coordinated use of the inclined guide plate 77 and the return pipe 78, thereby reducing the impurities in the electrophoretic liquid between the two movable racks 2, thereby preventing the impurities from causing defects on the surface of the metal decorative strip.

[0036] A method for electrophoretic coating of automobile metal trim strips, the coating method steps are as follows:

[0037] Step 1, first open the gantry 12, and drive the hanger 15 to the center position of the electrophoretic pool 1 through the movement of the gantry 12, then the second stepper motor 56 is turned on and drives the driving bevel gear 57 to rotate. Since the driving bevel gear 57 and the force bevel gear 55 are in a meshing transmission state, the driving bevel gear 57 drives the force bevel gear 55 and the rotating rod 52 to rotate. During the rotation of the rotating rod 52, the gear 53 is driven to rotate. Since the gear 53 and the rack 54 are in a meshing transmission state, the gear 53 drives the moving frame 2 to slide in the inner cavity of the electrophoretic pool 1 during the rotation. At this time, the two moving frames 2 move back to back at the same time, so that the two moving frames 2 drive the rotating column 41 to move, and the impurities in the electrophoretic liquid are stripped by the rotating column 41 and filtered to both sides of the inner cavity of the electrophoretic pool 1. Then, with the cooperation of the crane 13 and the lifting frame 14, the hanger 15 is moved downward, so that the hanger 15 reaches the inner cavity of the electrophoretic pool 1 and is located between the two moving frames 2 for electrophoretic coating;

[0038] Step 2, after the electrophoretic coating is completed, the crane 13 and the lifting frame 14 are used in coordination to drive the hanger 15 to rise, and the hanger 15 is separated from the inner cavity of the electrophoretic pool 1, and then the first stepper motor 47 is turned on and drives the worm 48 to rotate. Under the meshing transmission state of the worm 48 and the worm wheel 46, the worm wheel 46 rotates and drives the rotating column 41 to rotate. At the same time, the two stripping filter plates 42 are in meshing transmission rotation. Under the transmission action of the worm wheel 46, the two synchronous gears 45 rotate in reverse, thereby causing the two rotating columns 41 in the middle to rotate in reverse. At the same time, the two rotating columns 41 in the middle drive the rotating member 43 at their bottom ends to rotate during the rotation process. Under the transmission action of the connecting plate 44, multiple rotating columns 41 At the same time, the two steps rotate, thereby causing the stripping filter plate 42 to rotate. At this time, the inner cavity of the mobile frame 2 is opened. Then, the second stepper motor 56 rotates in the opposite direction, and under the transmission action of the force bevel gear 55 and the driving bevel gear 57, the rotating rod 52 and the gear 53 are driven to rotate. With the cooperation of the rack 54, the two mobile frames 2 move toward each other and approach each other. After the two mobile frames 2 approach each other, the first stepper motor 47 is turned on and rotates in the opposite direction, causing the worm 48, the worm wheel 46 and the two rotating columns 41 in the middle to rotate in the opposite direction, causing the rotating column 41 and the stripping filter plate 42 to rotate in the inner cavity of the mobile frame 2, thereby causing the rotating column 41 to close the inner cavity of the mobile frame 2. At this time, a relatively closed state is generated between the two mobile frames 2.

[0039] Step 3, the water pump 71 is then turned on, and the water pump 71 extracts the electrophoresis liquid between the two movable racks 2 through the extraction pipe 72, and transports the electrophoresis liquid to the top of the filter plate 76 in cooperation with the outlet pipe 74. At this time, under the filtering effect of the filter plate 76, the impurities in the electrophoresis liquid are retained on the top of the filter plate 76, and the filtered electrophoresis liquid enters the inner cavity of the filter box 6, and is re-input into the inner cavity of the electrophoresis pool 1 in cooperation with the return pipe 78, so that the impurities between the two movable racks 2 can be removed and wait for the secondary electrophoresis treatment.

[0040] In summary: the automobile metal trim electrophoretic coating equipment and coating method thereof, through the coordinated use of the movable frame 2, the opening and closing component 4 and the movable component 5, peels out a clean electrophoretic position for the electrophoretic processing of the metal trim, and through the coordinated use of the gantry 12, the crane 13 and the lifting frame 14, the hanging frame 15 is moved to the electrophoretic position, and at the same time, through the coordinated use of the filter box 6 and the filter component 7, the electrophoretic liquid between the two movable frames 2 is filtered, so as to achieve the purpose of effectively stripping impurities in the electrophoretic liquid and automatically shaping a clean electrophoretic space.

[0041] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. An electrophoretic coating equipment for automobile metal trims, characterized in that: The invention comprises an electrothermal pool (1): a slidable movable frame (2) is arranged on both sides of the inner cavity of the electrothermal pool (1); a fixed box (3) is fixedly connected to the top of the movable frame (2); an opening and closing assembly (4) is arranged in the inner cavity of the movable frame (2); the opening and closing assembly (4) comprises a plurality of rotating columns (41) rotatably connected to the inner cavity of the movable frame (2); a stripping filter plate (42) is fixedly connected to the surface of the rotating columns (41); synchronous gears (45) are fixedly connected to the surfaces of two rotating columns (41) located in the middle; the two synchronous gears (45) are meshed with each other; a worm gear (46) is arranged in the inner cavity of the fixed box (3); the worm gear (46) is fixedly connected to the rotating columns (41); 41), a first stepper motor (47) is fixedly installed on the top of one side of the fixed box (3), a worm (48) is rotatably connected to the inner cavity of the fixed box (3), the worm (48) is meshed with the worm wheel (46), one end of the worm (48) passes through the outside of the fixed box (3) and is fixedly connected to the output shaft of the first stepper motor (47), the bottom end of the rotating column (41) passes through the bottom of the moving frame (2) and is fixedly connected to a rotating member (43), the front and rear sides of the bottom of the moving frame (2) are both provided with connecting plates (44), the bottom end of the rotating member (43) is rotatably connected to the connecting plate (44), and a moving component is provided on the top of the moving frame (2) (5), the moving assembly (5) comprises a plurality of supporting sleeves (51) fixedly connected to the top of the moving frame (2), the inner cavity of the supporting sleeves (51) is rotatably connected to a rotating rod (52), the front end and the rear end of the rotating rod (52) are both fixedly connected to a gear (53), the front side and the rear end of the top of the electric pool (1) are both paved with a rack (54), the gear (53) and the rack (54) are meshed, a second stepping motor (56) is fixedly installed at the bottom of one side of the fixed box (3), the surface of the rotating rod (52) is fixedly connected to a force-bearing bevel gear (55), the output shaft of the second stepping motor (56) passes through the inner cavity of the fixed box (3) and is fixedly connected to a driving gear (55). The driven bevel gear (57) is meshed with the force-bearing bevel gear (55). The front and rear sides of the electrostatic pool (1) are fixedly connected to a filter box (6). The inner cavity of the filter box (6) is provided with a filter assembly (7). A movable gantry (12) is provided above the electrostatic pool (1). A crane (13) is fixedly installed at the top of the inner cavity of the gantry (12). A lift frame (14) is provided in the inner cavity of the gantry (12). A hanger (15) is hung at the bottom of the lift frame (14). The top of the lift frame (14) is fixedly connected to a hanging chain of the crane (13). A plurality of metal decorative strips are engaged on the surface of the hanger (15).

2. The electrophoretic coating equipment for automobile metal trim strips according to claim 1, characterized in that: The filter assembly (7) comprises a water pump (71) fixedly mounted on a side of the filter box (6) close to the electric pool (1); the front and rear sides of the inner cavity of the electric pool (1) are both provided with arc-shaped grooves (73); an extraction pipe (72) is installed in the inner cavity of the arc-shaped groove (73); the top end of the extraction pipe (72) is connected to the water inlet end of the water pump (71); and the water outlet end of the water pump (71) is connected to a water outlet pipe (74).

3. The electrophoretic coating equipment for automobile metal trim strips according to claim 2, characterized in that: The inner cavity of the filter box (6) is fixedly connected to a support frame (75), a filter plate (76) is installed on the top of the support frame (75), and the bottom of the inner cavity of the filter box (6) is fixedly connected to an inclined guide plate (77). Both ends of the filter box (6) close to the electrothermal pool (1) are fixedly connected to a return pipe (78), one end of the return pipe (78) is connected to the inner cavity of the filter box (6), and the other end of the return pipe (78) passes through the inner cavity of the electrothermal pool (1).

4. The electrophoretic coating equipment for automobile metal trim strips according to claim 3, characterized in that: A sewage trough (79) is provided on a side of the filter box (6) away from the electrothermal pool (1), and the bottom of the inner cavity of the sewage trough (79) is flush with the top of the filter plate (76).

5. The electrophoretic coating equipment for automobile metal trim strips according to claim 4, characterized in that: Support wheels (8) are fixedly mounted on the front and rear sides of the bottom of the mobile frame (2), and walking tracks (9) compatible with the support wheels (8) are laid on the front and rear sides of the bottom of the inner cavity of the electrothermal pool (1).

6. The electrophoretic coating equipment for automobile metal trim strips according to claim 5, characterized in that: The front and rear sides of the inner cavity of the electrothermal pool (1) are fixedly connected to two limiting guide rails (10), and the front and rear sides of the movable frame (2) are embedded with two sliding seats (11), and the sliding seats (11) are slidably connected to the surfaces of the limiting guide rails (10).

7. A method for electrophoretic coating of automobile metal trim strips, which is applied to the electrophoretic coating device for automobile metal trim strips according to claim 6, characterized in that: The coating method steps are as follows: Step 1: First, the gantry (12) is opened, and the gantry (12) is moved to drive the bracket (15) to the center position of the electric pool (1), and then the second stepper motor (56) is turned on and drives the driving bevel gear (57) to rotate. Since the driving bevel gear (57) and the force bevel gear (55) are in a meshing transmission state, the driving bevel gear (57) drives the force bevel gear (55) and the rotating rod (52) to rotate. During the rotation of the rotating rod (52), the gear (53) is driven to rotate. Since the gear (53) and the rack (54) are in a meshing transmission state, the gear (53) is driven to rotate. During the rotation of the wheel (53), the movable frame (2) is driven to slide in the inner cavity of the electrophoretic pool (1). At this time, the two movable frames (2) simultaneously move in opposite directions, so that the two movable frames (2) drive the rotating column (41) to move. Impurities in the electrophoretic liquid are stripped by the rotating column (41) and filtered to both sides of the inner cavity of the electrophoretic pool (1). Subsequently, with the cooperation of the crane (13) and the lifting frame (14), the hanging frame (15) is moved downward, so that the hanging frame (15) reaches the inner cavity of the electrophoretic pool (1) and is located between the two movable frames (2) for electrophoretic coating. Step 2: After the electrophoretic coating is completed, the crane (13) and the lifting frame (14) are used in coordination to drive the hanger (15) to rise and separate the hanger (15) from the inner cavity of the electrophoretic pool (1). Then, the first stepper motor (47) is turned on and drives the worm (48) to rotate. Under the meshing transmission state of the worm (48) and the worm wheel (46), the worm wheel (46) rotates and drives the rotating column (41) to rotate. At the same time, the two stripping filter plates (42) are in meshing transmission rotation. Under the transmission action of the worm wheel (46), the two synchronous gears (45) rotate in opposite directions, thereby causing the two rotating columns (41) in the middle to rotate in opposite directions. At the same time, the two rotating columns (41) in the middle drive the rotating parts (43) at their bottom ends to rotate during the rotation process. Under the transmission action of the connecting plate (44), the multiple rotating columns (41) rotate simultaneously. When the two moving frames (2) are close to each other, the first stepper motor (47) is turned on and rotates in the opposite direction, causing the stripping filter plate (42) to rotate. At this time, the inner cavity of the moving frame (2) is opened. Then, the second stepper motor (56) rotates in the opposite direction, and under the transmission action of the force-bearing bevel gear (55) and the driving bevel gear (57), the rotating rod (52) and the gear (53) are driven to rotate. With the cooperation of the rack (54), the two moving frames (2) move towards each other and approach each other. After the two moving frames (2) approach each other, the first stepper motor (47) is turned on and rotates in the opposite direction, causing the worm (48), the worm wheel (46) and the two rotating columns (41) located in the middle to rotate in the opposite direction, causing the rotating column (41) and the stripping filter plate (42) to rotate in the inner cavity of the moving frame (2), thereby causing the rotating column (41) to seal the inner cavity of the moving frame (2). At this time, a relatively closed state is generated between the two moving frames (2); Step 3: The water pump (71) is then turned on, and the water pump (71) extracts the electrophoresis liquid between the two movable racks (2) through the extraction pipe (72), and transports the electrophoresis liquid to the top of the filter plate (76) in cooperation with the water outlet pipe (74). At this time, under the filtering action of the filter plate (76), impurities in the electrophoresis liquid are retained on the top of the filter plate (76), and the filtered electrophoresis liquid enters the inner cavity of the filter box (6), and is re-input into the inner cavity of the electrophoresis pool (1) in cooperation with the return pipe (78), so that the impurities between the two movable racks (2) are removed and wait for secondary electrophoresis treatment.

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