Multifunctional electrophoretic coating system for automobile parts

Abstract

The present application relates to a kind of automobile parts multifunctional electrophoretic painting system, including electrophoresis chamber, the conveying mechanism being set in electrophoresis chamber, multiple equidistantly set in conveying mechanism and for supporting and shielding part support mechanism, set in the outside of electrophoresis chamber and for conveying part to support mechanism feeding mechanism, at least two set in electrophoresis chamber and for electrophoretic coating part electrophoretic mechanism and at least two set in electrophoresis chamber and respectively for the part of each electrophoretic mechanism electrophoretic coating after drying drying mechanism;Support mechanism includes the support frame being set in conveying mechanism, the support component being set in support frame and for supporting part and the shielding component being set in support component and for shielding the non-electrophoretic coating area when first electrophoretic coating shielding component.The present application solves the problem that the existing color coating is unstable, the degree of automation is low, the production cost is high, and the coating surface effect is poor.

Description

Technical Field

[0001] This invention relates to the field of automotive coating technology, and in particular to a multifunctional electrophoretic coating system for automotive parts. Background Technology

[0002] Automotive painting is the pinnacle of the painting industry, representing a country's highest level of painting expertise. Automotive painting production lines are large-scale, continuous, automated industrial production lines, demanding extremely high levels of automation, reliability, and coating quality from their equipment. Automotive painting typically uses electrophoretic coating systems. Electrophoretic coating is a coating method that uses an external electric field to cause pigments and resin particles suspended in an electrophoretic solution to migrate directionally and deposit onto the surface of a substrate, one of the electrodes. It is a special coating film formation method developed in recent years and is the most practically significant construction process for water-based coatings. It features water solubility, non-toxicity, and ease of automation control, and has been rapidly and widely applied across various industries.

[0003] Patent document CN101210338B discloses a method for multicolor electrophoretic coating on a metal substrate, comprising the following steps: performing a first partial ink printing treatment on the metal substrate to form an ink layer and a first partial exposed area on the surface of the metal substrate; performing a first electrophoretic coating treatment on the metal substrate to form a first coating layer on the first partial exposed area; removing the ink layer from the surface of the metal substrate to expose a second partial exposed area on the surface of the metal substrate; and performing a second electrophoretic coating treatment on the metal substrate to form a second coating layer on the second partial exposed area, wherein the first coating layer and the second coating layer are different colors. This invention also provides another method for multicolor electrophoretic coating on a metal substrate, in which, instead of directly performing the second electrophoretic coating after removing the ink layer in the aforementioned method, a second partial ink printing treatment is performed followed by the second electrophoretic coating treatment.

[0004] However, in actual production, the inventors found that existing color coatings for automotive parts require ink masking. Not only does the ink mix extensively with the electrophoretic solution after prolonged use, making the electrophoretic solution unstable and resulting in an uneven coating surface after electrophoresis, but the masking is mainly done manually, which requires a large amount of manpower, has a low degree of automation, low production efficiency, and poor color separation lines during manual operation, affecting the appearance of the coating surface. In addition, the ink needs to be removed during the second electrophoresis, which is not only difficult to recycle, resulting in material waste and increased production costs, but also difficult to remove ink, which easily leaves residues, causing an uneven coating surface after electrophoresis. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by incorporating a conveying mechanism in conjunction with a feeding mechanism, a support mechanism, two electrophoresis mechanisms, and two drying mechanisms. This allows for two electrophoretic coating operations during the automatic transfer of parts inside and outside the electrophoresis chamber. During the first electrophoretic coating operation, the non-electrophoretic coating areas of the parts are shielded by a shielding component. During the second electrophoretic coating operation, the shielding component opens, enabling two-tone coating of the parts. This solves the problems of unstable electrophoretic solution, low automation, high production costs, and poor coating surface effects in existing two-tone coating processes for automotive parts.

[0006] To address the above technical problems, the following technical solution is adopted: A multifunctional electrophoretic coating system for automotive parts, comprising:

[0007] An electrophoresis chamber, a conveying mechanism disposed within the electrophoresis chamber, a plurality of support mechanisms equally spaced on the conveying mechanism for supporting and shielding parts, a loading mechanism disposed outside the electrophoresis chamber for conveying the parts to the support mechanisms, at least two electrophoresis mechanisms disposed within the electrophoresis chamber for electrophoretic coating of the parts, and at least two drying mechanisms disposed within the electrophoresis chamber for drying the parts after electrophoretic coating by each of the electrophoresis mechanisms;

[0008] The support mechanism includes a support frame disposed on the conveying mechanism, a support assembly disposed on the support frame for supporting the part, and a masking assembly disposed on the support assembly for masking the non-electrophoretic coating area during the first electrophoretic coating.

[0009] Preferably, the support assembly includes a mounting base rotatably mounted on the support frame, a plurality of connecting posts slidably mounted on the mounting base and inserted into connecting holes on the part, electrodes mounted on the connecting posts and electrically connected to the inner wall of the connecting holes, two elastic connecting sleeves sleeved on the connecting posts and respectively located on both sides of the electrodes, a pressing block disposed at one end of the connecting posts, and a plurality of pressing sleeves disposed on the mounting base and respectively sleeved on each of the connecting posts. When the pressing block slides with the connecting post toward the pressing sleeve, the pressing block, in conjunction with the electrodes and the pressing sleeves, presses the two elastic connecting sleeves to deform until the elastic connecting sleeves connect and seal the two ends of the connecting hole.

[0010] Preferably, the masking assembly includes a cover plate slidably disposed on the mounting base and adapted to the non-electrophoretic coating area, a first elastic layer disposed on the side of the cover plate near the non-electrophoretic coating area for sealing the non-electrophoretic coating area, and a guide slope disposed on the side of the cover plate away from the non-electrophoretic coating area.

[0011] Preferably, the support mechanism further includes a fixing component disposed on the support frame and used to fix the part, thereby facilitating the rotation of the mounting base to switch the direction in which the connecting column 322 connects to the part;

[0012] The fixing assembly includes two clamping arms that are rotatably mounted on the support frame and can be opened and closed, a clamping part disposed on the clamping arms and adapted to the outer contour of the part, and a second elastic layer disposed on the clamping part near the part.

[0013] Preferably, the electrophoresis mechanism includes an electrophoresis pool disposed in the electrophoresis chamber, a nozzle assembly disposed in the electrophoresis pool and forcing the electrophoretic liquid in the electrophoresis pool to spray onto the parts, and a cleaning assembly disposed above the electrophoresis pool for cleaning the support mechanism and the parts.

[0014] Preferably, the nozzle assembly includes multiple arrays of first nozzles arranged on the inner wall of the electric pool, multiple sets of second nozzles movably arranged at the bottom of the electric pool, and a drive member arranged on the second nozzles and cooperating with the movement of the support mechanism to drive the second nozzles to move and always spray towards the part. The drive member can control the distance between the second nozzles and the part while driving the second nozzles to move.

[0015] Preferably, the driving component includes a hinge rod with one end hinged to the electric pool and the other end slidably connected to the second nozzle, a driving rod disposed on the second nozzle, a driving groove disposed in the electric pool and bent downward in the middle and slidably connected to the driving rod, a push rod disposed on the second nozzle and cooperating with the movement of the support mechanism to push the hinge rod to rotate with the second nozzle in the direction of movement of the support mechanism, and a first elastic member disposed in the electric pool and forcing the second nozzle to rotate with the hinge rod in the direction of movement away from the support mechanism.

[0016] Preferably, the cleaning assembly includes two covers that are movably disposed on both sides of the electrophoretic pool and cooperate with each other to cover the support mechanism, a liquid outlet formed at the lower end of the covers, a mounting bracket that is movably disposed inside the covers, and a plurality of air pipes disposed on the mounting brackets for blowing off the electrophoretic liquid on the support mechanism and the parts.

[0017] Preferably, the electrophoresis chamber has a U-shaped structure, with an inlet and an outlet respectively passing through both ends of the electrophoresis chamber. One end of the conveying mechanism is set inside the electrophoresis chamber through the inlet and led out through the outlet to form a ring structure.

[0018] The feeding mechanism includes a conveyor disposed outside the inlet and outlet and directly below the conveying mechanism, a first positioning component disposed on the conveyor and used to position the part being conveyed directly below the support mechanism, and a second positioning component disposed on the conveyor and used to position the connecting hole on the part.

[0019] Preferably, the first positioning component includes guide plates disposed on both sides of the conveyor and used to guide the part to the area directly below the support mechanism, and a positioning plate connected to the two guide plates and used to position the part directly above the second positioning component.

[0020] The second positioning component includes an extension rod that is movably mounted on the conveyor, a positioning rod that is slidably mounted on the extension rod, an elastic element mounted on the extension rod for forcing the positioning rod into the connection hole, and a drive roller mounted on the positioning plate for driving the part to rotate until the connection hole is aligned with the positioning rod.

[0021] The beneficial effects of this invention are:

[0022] (1) In this invention, by setting up a conveying mechanism in conjunction with a feeding mechanism and a support mechanism, the parts are automatically conveyed inside and outside the electrophoresis chamber. During the conveying process, two electrophoresis mechanisms and two drying mechanisms are used to perform two electrophoretic coating operations on the parts. The degree of automation is high, reducing labor costs. The electrophoretic coating operation ensures the cleanliness of the support mechanism and the parts, avoiding contamination of the electrophoretic liquid during the next electrophoretic coating. In the first electrophoretic coating operation, the parts are shielded from the non-electrophoretic coating area by a shielding component. In the second electrophoretic coating tank operation, the shielding component is opened to achieve color coating of the parts. The shielding component ensures that the edges of the non-electrophoretic coating area are neat and the surface of the area is clean, resulting in a good surface effect of color coating.

[0023] (2) In this invention, by setting a connecting column in conjunction with the extrusion block and the extrusion sleeve to extrude the elastic connecting sleeve to deform, the connection support of the parts is realized at the same time, the rotation of the mounting base facilitates the cleaning and drying of the parts, and the gap between the connecting hole and the extrusion sleeve and the connecting column is shielded and sealed, which avoids the difficulty in cleaning after the electrophoretic liquid enters, and also avoids the formation of electrophoretic coating on the connecting hole and the electrode inside it, thereby ensuring the stability of the electrode and the stability of the connecting hole during use. In addition, after fixing the parts with the fixing component, the direction of the connecting column connecting the parts can be adjusted so that the parts are immersed in the two electrophoretic cells in different directions, ensuring the shielding effect of the shielding component and improving the effect of each electrophoretic coating.

[0024] (3) In this invention, by setting a first nozzle and a second nozzle that moves with the support mechanism via a drive component, the electrophoretic liquid in the electrophoretic pool always flows toward the part that moves with the support mechanism. At the same time, with the distance between the first nozzle and the part on the front and rear sides of the electrophoretic pool fixed, the distance between the second nozzle and the part is ensured, so that the electrophoretic liquid flowing toward the part is relatively fixed, thereby improving the electrophoretic coating effect.

[0025] In summary, this system offers advantages such as stable electrophoretic solution, high degree of automation, low production cost, and good coating surface effect, making it particularly suitable for the field of automotive coating technology. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of a multifunctional electrophoretic coating system for automotive parts provided by the present invention.

[0028] Figure 2 This is a schematic diagram of the internal structure of the electrophoresis chamber provided by the present invention.

[0029] Figure 3 A schematic diagram of the support mechanism provided by the present invention.

[0030] Figure 4 The front view of the support mechanism provided by the present invention.

[0031] Figures 5-7 A diagram illustrating the usage process of the support mechanism provided by this invention.

[0032] Figure 8 This is a cross-sectional view of the support mechanism provided by the present invention supporting the parts.

[0033] Figure 9 Provided by the present invention Figure 8 A magnified view of a portion of point A in the middle.

[0034] Figure 10 This is a schematic diagram of the electrophoresis mechanism provided by the present invention.

[0035] Figure 11 This is a cross-sectional view of the electrophoretic coating process of the parts provided by the present invention.

[0036] Figure 12 Provided by the present invention Figure 10 A magnified view of a section at point B.

[0037] Figures 13-14 This is a diagram illustrating the movement process of the second nozzle provided by the present invention.

[0038] Figure 15 This is a schematic diagram of the feeding mechanism provided by the present invention.

[0039] Figure 16 Provided by the present invention Figure 15 A magnified view of a section at point C.

[0040] Figure 17 This is a schematic diagram of the structure of the part provided by the present invention. Detailed Implementation

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0042] Example 1

[0043] like Figures 1-3 as well as Figure 17 As shown, a multifunctional electrophoretic coating system for automotive parts includes:

[0044] Electrophoresis chamber 1, conveying mechanism 2 set inside electrophoresis chamber 1, multiple support mechanisms 3 set at equal intervals on conveying mechanism 2 for supporting and shielding parts 8, feeding mechanism 4 set outside electrophoresis chamber 1 for conveying parts 8 to support mechanism 3, at least two electrophoresis mechanisms 5 set inside electrophoresis chamber 1 for electrophoretic coating of parts 8, and at least two drying mechanisms 6 set inside electrophoresis chamber 1 for drying parts 8 after electrophoretic coating by each electrophoresis mechanism 5.

[0045] The support mechanism 3 includes a support frame 31 mounted on the conveying mechanism 2, a support assembly 32 mounted on the support frame 31 for supporting the part 8, and a shielding assembly 33 mounted on the support assembly 32 for shielding the non-electrophoretic coating area during the first electrophoretic coating.

[0046] In this embodiment, by setting up a conveying mechanism 2 in conjunction with a feeding mechanism 4 and a support mechanism 3, the parts 8 are automatically conveyed inside and outside the electrophoresis chamber 1. During the conveying process, two electrophoresis mechanisms 5 and two drying mechanisms 6 are used to perform two electrophoretic coating operations on the parts 8. The automation level is high, reducing labor costs. The electrophoretic coating operation ensures the cleanliness of the support mechanism 3 and the parts 8, avoiding contamination of the electrophoretic solution during the next electrophoretic coating. In the first electrophoretic coating operation, the parts 8 are shielded from the non-electrophoretic coating area by the shielding component 33. In the second electrophoretic coating operation, the shielding component 33 is opened to achieve the color coating of the parts 8. The shielding component 33 ensures that the edges of the non-electrophoretic coating area are neat and the surface of the area is clean, resulting in a good surface effect of the color coating.

[0047] In detail, firstly, the feeding mechanism 4 conveys the part 8 to the support mechanism 3, where it is supported by the support component 32. Then, the masking component 33 masks the non-electrophoretic coating areas of the part 8 from the first electrophoretic coating. Next, the conveyor 41, in conjunction with the support mechanism 3, conveys the part 8 to an electrophoretic coating unit 5 for the first electrophoretic coating. After the first electrophoretic coating, a drying mechanism 6 dries the part 8 supported on the support mechanism 3, forming a first coating 82 on the part 8 and ensuring the surfaces of the support mechanism 3 and the part 8 are clean. Then, the masking component 33 is opened to prevent damage to the undried first coating 82. The conveyor 41, in conjunction with the support mechanism 3, conveys the part 8 to another electrophoretic coating unit 5 for the second electrophoretic coating. After the second electrophoretic coating, another drying mechanism 6 dries the part 8 supported on the support mechanism 3, forming a second coating 83 on the non-electrophoretic coating areas from the first electrophoretic coating. Finally, the conveyor 41 conveys the two-color part 8 formed after the two electrophoretic coatings to the outside of the electrophoretic chamber 1 and removes the part 8 from the support mechanism 3, completing the production process.

[0048] It should be noted that the conveying mechanism 2 and the drying mechanism 6 themselves and their installation methods are existing technologies, and will not be described in detail here;

[0049] The support frame 31 is a telescopic rod structure, and the support component 32 is set at the telescopic end of the telescopic rod. The telescopic control part 8 moves with the support component 32 through the telescopic rod, which facilitates the support operation and subsequent electrophoretic coating operation, while reducing the structural complexity of the conveying mechanism 2 and making it easier to install.

[0050] In addition, this application does not limit the specific structure of part 8. Part 8 is referred to as a two-color wheel hub, including a body 84 and spokes 85. The connecting hole 81 is located at the end of the spokes 85 away from the body 84. The non-electrophoretic coating area of ​​the first electrophoretic coating is located on the outside of the spokes 85.

[0051] Furthermore, such as Figures 8-9As shown, the support assembly 32 includes a mounting base 321 rotatably mounted on the support frame 31, multiple connecting posts 322 slidably mounted on the mounting base 321 and inserted into the connecting holes 81 on the part 8, an electrode 323 mounted on the connecting post 322 and electrically connected to the inner wall of the connecting hole 81, two elastic connecting sleeves 324 sleeved on the connecting post 322 and located on both sides of the electrode 323, a pressing block 325 mounted at one end of the connecting post 322, and multiple pressing sleeves 326 mounted on the mounting base 321 and sleeved on each connecting post 322. When the pressing block 325 slides with the connecting post 322 toward the pressing sleeve 326, the pressing block 325, together with the electrode 323 and the pressing sleeve 326, presses the two elastic connecting sleeves 324 to deform until the elastic connecting sleeves 324 connect and seal the two ends of the connecting hole 81.

[0052] In this embodiment, by setting the connecting post 322 in conjunction with the extrusion block 325 and the extrusion sleeve 326 to extrude the elastic connecting sleeve 324 to deform, the connection support of the part 8 is achieved. At the same time, the rotation of the mounting base 321 facilitates the cleaning and drying of the part 8. It also achieves the shielding and sealing of the gap between the connecting hole 81 and the extrusion sleeve 326 and the connecting post 322, avoiding the difficulty in cleaning after the electrophoretic liquid enters, and also preventing the formation of an electrophoretic coating on the connecting hole 81 and the electrode 323 inside it, thereby ensuring the stability of the electrode 323 and the stability of the connecting hole 81 during use.

[0053] In detail, during use, the support frame 31 extends, and the connecting column 322 moves with the mounting base 321 toward the part 8 until the electrode 323 is connected to the inner wall of the connecting hole 81. Then, the connecting column 322 moves away from the part 8, causing the extrusion block 325 and the extrusion sleeve 326 to deform and connect the elastic connecting sleeve 324, sealing both ends of the connecting hole 81. When the mounting base 321 rotates, causing the part 8 to flip, it is easier to blow off the electrophoretic liquid on the part 8, and at the same time, it makes the heating more uniform during drying.

[0054] It should be noted that the mounting base 321 is rotatably mounted on the telescopic end of the support frame 31, and multiple connecting columns 322 are interconnected through connecting blocks 327, which facilitates simultaneous driving and sliding for synchronous operation.

[0055] Furthermore, such as Figures 3-5 As shown, the masking assembly 33 includes a cover plate 331 that is slidably disposed on the mounting base 321 and adapted to the non-electrophoretic coating area, a first elastic layer 333 disposed on the side of the cover plate 331 near the non-electrophoretic coating area and used to seal the non-electrophoretic coating area, and a guide slope 332 disposed on the side of the cover plate 331 away from the non-electrophoretic coating area.

[0056] In this embodiment, by setting the first elastic layer 333, the cover plate 331 has a better shielding effect on the non-electrophoretic coating area. At the same time, in conjunction with the guide slope 332, it is convenient to clean the electrophoretic liquid on the cover plate 331.

[0057] In detail, during use, the cover plate 331 moves toward the part 8 until the first elastic layer 333 deforms and seals the non-electrophoretic coating area. Then, the support frame 31 extends to insert the part 8 into the electrophoresis mechanism 5. At this time, the cover plate 331 is positioned above the part 8 along with the mounting base 321, which prevents the cover plate 331 from being immersed too deeply in the water, thereby preventing the electrophoretic liquid from entering between the cover plate 331 and the part 8 due to high water pressure or water flow impact, thus reducing the masking effect.

[0058] It should be noted that there are two guide slopes 332. The two guide slopes 332 are used to guide the electrophoretic liquid on the cover plate 331 to the outside on both sides, which makes it easier to clean off the attached electrophoretic liquid.

[0059] Furthermore, such as Figures 3-7 As shown, the support mechanism 3 also includes a fixing component 34 disposed on the support frame 31 and used to fix the part 8, thereby facilitating the rotation of the mounting base 321 to switch the direction of the connecting column 322 connecting the part 8;

[0060] The fixing assembly 34 includes two clamping arms 341 that are rotatably mounted on the support frame 31 and can be opened and closed, a clamping part 342 that is mounted on the clamping arms 341 and adapted to the outer contour of the part 8, and a second elastic layer 343 that is mounted on the clamping part 342 near the part 8.

[0061] In this embodiment, after fixing the part 8 by setting the fixing component 34, the direction of the connecting column 322 connecting the part 8 is adjusted after the first electrophoretic coating is completed. This adjusts the non-electrophoretic coating area on the part 8 during the first electrophoretic coating to face downwards. Then, during the second electrophoretic coating, only the lower part of the part 8 needs to be immersed in the electrophoretic solution for electrophoretic coating, which improves the electrophoretic coating effect and reduces the difficulty of subsequent cleaning and drying.

[0062] In detail, after the first electrophoretic coating is completed, the masking component 33 is first opened and the clamping arm 341 is closed so that the clamping part 342 clamps the part 8 through the second elastic layer 343. This makes the clamping stability high while avoiding scratching or even damaging the first coating 82 on the outer contour of the part 8. Then, the connecting post 322 slides so that the elastic connecting sleeve 324 returns to its deformation, and the connecting post 322 is separated from the top of the part 8. Then, the mounting base 321 is rotated so that the connecting post 322 rotates to the bottom of the part 8 and is connected to the part 8 from the bottom. Finally, the mounting base 321 is rotated so that the part 8 rotates with the connecting post 322 to adjust the non-electrophoretic coating area to face downwards, so that the lower part of the part 8 can be immersed in the electrophoretic solution for electrophoretic coating during the second electrophoretic coating.

[0063] It should be noted that the clamping arm 341 is rotatably mounted on the fixed end of the support frame 31, so that when the clamping arm 341 clamps the part 8, the mounting frame 533 can be moved by the extension and retraction of the support frame 31, thereby separating the connecting column 322 from the part 8.

[0064] In addition, the elastic connecting sleeve 324, the first elastic layer 333 and the second elastic layer 343 are all supported by materials such as rubber and latex, which have a certain deformation capacity, good sealing performance, good wear resistance and long service life.

[0065] Furthermore, such as Figure 10 As shown, the electrophoresis mechanism 5 includes an electrophoresis pool 51 disposed in the electrophoresis chamber 1, a nozzle assembly 52 disposed in the electrophoresis pool 51 and forcing the electrophoresis liquid in the electrophoresis pool 51 to spray onto the part 8, and a cleaning assembly 53 disposed above the electrophoresis pool 51 and used to clean the support mechanism 3 and the part 8.

[0066] In this embodiment, by setting up an electrophoretic pool 51 in conjunction with a nozzle assembly 52 to spray the electrophoretic liquid onto the part 8, the efficiency and effect of electrophoresis are improved. After the electrophoretic coating is completed, the part 8 and the support mechanism 3 are cleaned with the cleaning assembly 53, which facilitates the subsequent drying operation by the drying mechanism 6. At the same time, it reduces the impact on the stability of the electrophoretic liquid in the next electrophoretic coating operation.

[0067] It should be noted that when the electrophoresis pool 51 is energized, the electrophoresis liquid inside it becomes electrified. The electrophoresis pool 51 itself and its installation method are existing technologies and will not be described in detail here.

[0068] Furthermore, such as Figures 10-14As shown, the nozzle assembly 52 includes multiple arrays of first nozzles 521 arranged on the inner wall of the electric pool 51, multiple sets of second nozzles 522 movably arranged at the bottom of the electric pool 51, and a drive member 523 arranged on the second nozzles 522 and cooperating with the movement of the support mechanism 3 to drive the second nozzles 522 to move and always spray towards the part 8. The drive member 523 can control the distance between the second nozzles 522 and the part 8 while driving the second nozzles 522 to move.

[0069] In this embodiment, by setting a first nozzle 521 and a second nozzle 522 that moves with the support mechanism 3 via a drive member 523, the electrophoretic liquid in the electrophoretic pool 51 always flows toward the part 8 that moves with the support mechanism 3. At the same time, with the distance between the first nozzle 521 and the part 8 on the front and rear sides of the electrophoretic pool 51 fixed, the distance between the second nozzle 522 and the part 8 is ensured, so that the electrophoretic liquid flowing toward the part 8 is relatively fixed, thereby improving the electrophoretic coating effect.

[0070] In detail, when part 8 extends into the interior of one end of electrophoretic pool 51 along with support mechanism 3, the first nozzle 521 on three sides of electrophoretic pool 51, in conjunction with the second nozzle 522, sprays the electrophoretic liquid in electrophoretic pool 51 toward the periphery and lower end of part 8. When part 8 moves in electrophoretic pool 51 with support mechanism 3, support mechanism 3 drives the second nozzle 522 to move through drive component 523, adjusting the spray direction of second nozzle 522 and its distance from part 8, thereby improving the spraying effect of second nozzle 522. At the same time, multiple sets of second nozzles 522 cooperate with each other and with the first nozzles 521 on the front and rear sides of electrophoretic pool 51 to spray the electrophoretic liquid in electrophoretic pool 51 toward the periphery and lower end of part 8, improving the effect of the entire electrophoretic coating process.

[0071] It should be noted that both the first nozzle 521 and the second nozzle 522 include an installation tube 5211 and a plurality of nozzle bodies 5212 arrayed on the installation tube 5211. The installation tube 5211 facilitates the installation of the nozzle body 84 and also facilitates the movement of the installation tube 5211 to move the plurality of nozzle bodies 5212.

[0072] Furthermore, such as Figures 10-14As shown, the drive member 523 includes a hinge rod 5231 with one end hinged to the electric pool 51 and the other end slidably connected to the second nozzle 522, a drive rod 5232 disposed on the second nozzle 522, a drive groove 5233 disposed in the electric pool 51 and bent downward in the middle and slidably connected to the drive rod 5232, a push rod 5234 disposed on the second nozzle 522 and cooperating with the movement of the support mechanism 3 to push the hinge rod 5231 to rotate with the second nozzle 522 in the direction of movement of the support mechanism 3, and a first elastic member disposed in the electric pool 51 to force the second nozzle 522 to rotate with the hinge rod 5231 in the direction away from the support mechanism 3.

[0073] In this embodiment, the push rod 5234, in conjunction with the movement of the support mechanism 3, drives the second nozzle 522 to rotate with the hinge rod 5231, so that the second nozzle 522 always sprays towards the part 8. At the same time, in conjunction with the drive rod 5232 and the drive groove 5233, the second nozzle 522 is driven to move on the hinge rod 5231, thereby controlling the distance between the second nozzle 522 and the part 8. When the support mechanism 3 moves until it disengages from the push rod 5234, the first elastic element forces the second nozzle 522 to reset, making it convenient for the next use.

[0074] In detail, when the support mechanism 3 moves towards the second nozzle 522 and pushes the push rod 5234, the first elastic element deforms. The second nozzle 522 rotates from one side spraying towards the part 8 with the hinge rod 5231 to spray towards the bottom of the part 8. The drive rod 5232, in conjunction with the drive groove 5233, forces the second nozzle 522 to move away from the part 8, controlling the distance between the second nozzle and the part 8 within a certain range. When the support mechanism 3 moves away from the second nozzle 522 and pushes the push rod 5234, the first elastic element continues to deform. The second nozzle 522 rotates from the bottom spraying towards the part 8 with the hinge rod 5231 to spray towards the other side of the part 8. The drive rod 5232, in conjunction with the drive groove 5233, forces the second nozzle 522 to move towards the part 8, controlling the distance between the second nozzle and the part 8 within a certain range. When the support mechanism 3 disengages from the push rod 5234, the first elastic element returns to its original shape, forcing the second nozzle to rotate and reset with the hinge rod 5231, while simultaneously forcing the drive rod 5232 to slide and reset.

[0075] It should be noted that the end of the drive groove 5233 is connected to the separation groove 5235. When the drive rod 5232 slides to the end of the drive groove 5233, the separation groove 5235 forces the push rod 5234 to move away from the support mechanism 3 along with the drive rod 5232, thereby separating the push rod 5234 from the support mechanism 3.

[0076] Furthermore, such as Figure 10As shown, the cleaning assembly 53 includes two covers 531 that are movably disposed on both sides of the electrophoretic pool 51 and cooperate with each other to cover the support mechanism 3, an outlet 532 formed at the lower end of the cover 531, a mounting bracket 533 that is movably disposed inside the cover 531, and a plurality of air blowing pipes 534 disposed on the mounting bracket 533 for blowing off the electrophoretic liquid on the support mechanism 3 and the parts 8.

[0077] In this embodiment, by setting up a cover 531 in conjunction with an air blowing pipe 534 that moves with the mounting bracket 533, the electrophoretic liquid on the support mechanism 3 and the supported parts 8 can be blown off, ensuring the cleanliness of the support mechanism 3 and the parts 8. The blown-off electrophoretic liquid is recovered into the electrophoretic pool 51 through the outlet 532. In addition, some air blowing pipes 534 can extend into the interior of the body 84 through the spokes 85 to blow air and clean the inner wall of the body 84.

[0078] Furthermore, such as Figures 15-17 As shown, the electrophoresis chamber 1 has a U-shaped structure. The two ends of the electrophoresis chamber 1 are respectively provided with a feed inlet and a discharge outlet. One end of the conveying mechanism 2 is set inside the electrophoresis chamber 1 through the feed inlet and led out through the discharge outlet to form a ring structure.

[0079] The feeding mechanism 4 includes a conveyor 41 located outside the inlet and outlet and directly below the conveying mechanism 2, a first positioning component 42 located on the conveyor 41 and used to position the part 8 being conveyed directly below the support mechanism 3, and a second positioning component 43 located on the conveyor 41 and used to position the connecting hole 81 on the part 8.

[0080] In this embodiment, by setting the position of the part 8 and its connecting hole 81 in conjunction with the first positioning component 42 and the second positioning component 43, the support mechanism 3 on the conveying mechanism 2 can support the part 8 through the connecting hole 81. Then, the part 8 is conveyed by the ring-shaped conveying mechanism 2 in the U-shaped electrophoresis chamber 1 for electrophoretic coating and then re-conveyed to the conveyor 41. The part 8 after electrophoretic coating is output by the conveyor 41, which further improves the degree of automation.

[0081] It should be noted that the conveyor 41 is preferably a roller conveyor 41, and the second positioning component 43 can position the connecting hole 81 by extending the conveyor 41 between the rollers, which facilitates the installation of the second positioning component 43 and the realization of the positioning function.

[0082] In addition, a processing mechanism 7 is provided at one end of the electrophoresis chamber 1 near the feed inlet. The processing mechanism 7 is used to treat dust, oil stains and other contaminants on the support mechanism 3 and its support parts 8, so as to prevent dust, oil stains and other contaminants that are picked up outside the electrophoresis chamber 1 from entering the electrophoresis mechanism 5 and causing pollution. The processing mechanism 7 itself and its installation method are existing technologies and will not be described in detail here.

[0083] Furthermore, such as Figures 15-17 As shown, the first positioning component 42 includes guide plates 421 disposed on both sides of the conveyor 41 and used to guide the part 8 to the support mechanism 3 directly below, and positioning plate 422 connected to the two guide plates 421 and used to position the part 8 directly above the second positioning component 43.

[0084] The second positioning assembly 43 includes an extension rod 431 that is movably mounted on the conveyor 41, a positioning rod 432 that is slidably mounted on the extension rod 431, a second elastic element mounted on the extension rod 431 for forcing the positioning rod 432 into the connection hole 81, and a drive roller 433 mounted on the positioning plate 422 for driving the part 8 to rotate until the connection hole 81 is aligned with the positioning rod 432.

[0085] In this embodiment, by setting the guide plate 421 in conjunction with the positioning plate 422 to position the part 8 during the conveyor 41 conveying the part 8, the extension rod 431 can be moved upward, so that the positioning rod 432 moves towards the connecting hole 81, and then the drive roller 433 drives the part 8 to rotate until the connecting hole 81 is aligned with the positioning rod 432. Then, the second elastic member forces the positioning rod 432 to be inserted into the connecting hole 81 for positioning.

[0086] It should be noted that the first elastic element and the second elastic element are coil springs, torsion springs or leaf springs, etc., and their own installation methods are existing technologies. They are not shown in the attached drawings and will not be described in detail here.

[0087] Work process:

[0088] First, the feeding mechanism 4 transports the part 8 to the support mechanism 3. After being supported by the support component 32, the shielding component 33 shields the non-electrophoretic coating area on the part 8 during the first electrophoretic coating.

[0089] Next, the conveyor 41, in conjunction with the support mechanism 3, transports the part 8 to an electrophoresis mechanism 5 for the first electrophoretic coating. Then, a drying mechanism 6 dries the part 8 supported on the support mechanism 3, so that a first coating 82 is formed on the part 8.

[0090] Then, the masking component 33 is opened, and the conveyor 41, together with the support mechanism 3, transports the part 8 to another electrophoresis mechanism 5 for a second electrophoretic coating. Then, the part 8 supported on the support mechanism 3 is dried by another drying mechanism 6, so that a second coating 83 is formed on the non-electrophoretic coating area during the first electrophoretic coating.

[0091] Finally, the conveyor 41 transports the two-color parts 8 formed after two electrophoretic coating processes to the outside of the electrophoresis chamber 1, and then removes the parts 8 from the support mechanism 3, completing the production process.

[0092] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0093] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0094] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-functional electrophoretic coating system for automotive parts, characterized by, The application relates to an electrophoresis device, which comprises an electrophoresis chamber, a conveying mechanism arranged in the electrophoresis chamber, a plurality of support mechanisms arranged on the conveying mechanism at equal intervals and used for supporting and shielding parts, a feeding mechanism arranged outside the electrophoresis chamber and used for feeding the parts to the support mechanisms, at least two electrophoresis mechanisms arranged in the electrophoresis chamber and used for electrophoretic coating of the parts, and at least two drying mechanisms arranged in the electrophoresis chamber and respectively used for drying the parts after being electrophoretically coated by the electrophoresis mechanisms. The support mechanism comprises a support frame arranged on the conveying mechanism, a support assembly arranged on the support frame and used for supporting the parts, and a shielding assembly arranged on the support assembly and used for shielding non-electrophoretic coating areas of the parts during the first electrophoretic coating. The support assembly comprises a mounting base rotatably arranged on the support frame, a plurality of connecting rods slidingly arranged on the mounting base and inserted into connecting holes of the parts, electrodes arranged on the connecting rods and electrically connected to inner walls of the connecting holes, two elastic connecting sleeves sleeved on the connecting rods and respectively located on two sides of the electrodes, an extrusion block arranged at one end of the connecting rod, and a plurality of extrusion sleeves arranged on the mounting base and respectively sleeved on the connecting rods, when the extrusion block slides towards the extrusion sleeves along the connecting rods, the extrusion block extrudes the two elastic connecting sleeves together with the electrodes and the extrusion sleeves to deform until the elastic connecting sleeves are connected and sealed to two ends of the connecting holes. The shielding assembly comprises a cover plate slidingly arranged on the mounting base and matched with the non-electrophoretic coating areas, a first elastic layer arranged on one side of the cover plate close to the non-electrophoretic coating areas and used for sealing the non-electrophoretic coating areas, and a guide slope arranged on the other side of the cover plate away from the non-electrophoretic coating areas. The support mechanism further comprises a fixing assembly arranged on the support frame and used for fixing the parts, so that the mounting base can rotate to switch the direction of the connecting rods connecting the parts.

2. The multi-functional electrophoretic coating system for automobile parts according to claim 1, characterized in that, The fixing assembly comprises two clamping arms rotatably arranged on the support frame and capable of being opened and closed, a clamping part arranged on the clamping arms and matched with the outer contour of the parts, and a second elastic layer arranged on one side of the clamping part close to the parts. The electrophoresis mechanism comprises an electrophoresis pool arranged in the electrophoresis chamber, a nozzle assembly arranged in the electrophoresis pool and used for spraying electrophoretic liquid in the electrophoresis pool towards the parts, and a cleaning assembly arranged above the electrophoresis pool and used for cleaning the support mechanism and the parts.

3. The multi-functional electrophoretic coating system for automobile parts according to claim 1, characterized in that, The nozzle assembly comprises a plurality of groups of first nozzles arranged in an array on the inner wall of the electrophoresis pool, a plurality of groups of second nozzles movably arranged on the bottom of the electrophoresis pool, and a driving member arranged on the second nozzles and matched with the movement of the support mechanism to drive the second nozzles to move and always spray the parts, and the driving member can control the distance between the second nozzles and the parts while driving the second nozzles to move.

4. The multi-functional electrophoretic coating system for automobile parts according to claim 3, characterized in that, ​ 5. The multi-functional electrophoretic coating system for automobile parts according to claim 4, characterized in that, The driving member comprises a hinged rod hinged at one end to the electrophoresis tank and slidingly connected at the other end to the second nozzle, a driving rod arranged on the second nozzle, a driving groove arranged in the electrophoresis tank and having a middle part bent downward and slidingly connected to the driving rod, a pushing rod arranged on the second nozzle and cooperating with the movement of the supporting mechanism to push the hinged rod to rotate in the direction of movement of the second nozzle away from the supporting mechanism, and a first elastic member arranged in the electrophoresis tank and used to force the second nozzle to rotate in the direction of movement of the hinged rod away from the supporting mechanism.

6. The multi-functional electrophoretic coating system for automobile parts according to claim 3, characterized in that, The cleaning assembly comprises two cover bodies movably arranged on both sides of the electrophoresis tank and cooperating with each other to cover the supporting mechanism, a liquid outlet formed at the lower end of the cover body, a mounting frame movably arranged inside the cover body, and a plurality of blowing pipes arranged on the mounting frame and used to blow off the electrophoretic liquid on the supporting mechanism and the parts.

7. The multi-functional electrophoretic coating system for automobile parts according to claim 1, characterized in that, The electrophoresis chamber has a U-shaped structure, two ends of the electrophoresis chamber are respectively provided with a feeding port and a discharging port, one end of the conveying mechanism is arranged inside the electrophoresis chamber through the feeding port and is connected to the other end through the discharging port to form a ring-shaped structure; The feeding mechanism comprises a conveyor arranged outside the feeding port and the discharging port and located directly below the conveying mechanism, a first positioning assembly arranged on the conveyor and used to position the parts in the conveying process directly below the supporting mechanism, and a second positioning assembly arranged on the conveyor and used to position the connecting hole on the parts.

8. The multi-functional electrophoretic coating system for automobile parts according to claim 7, characterized in that, The first positioning assembly comprises guide plates arranged on both sides of the conveyor and used to guide the parts to be directly below the supporting mechanism, and a positioning plate connected to the two guide plates and used to position the parts directly above the second positioning assembly. The second positioning assembly comprises an extension rod movably arranged on the conveyor, a positioning rod slidingly arranged on the extension rod, a second elastic member arranged on the extension rod and used to force the positioning rod to be inserted into the connecting hole, and a driving roller arranged on the positioning plate and used to drive the parts to rotate until the connecting hole is aligned with the positioning rod.

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