Automatic coating assembly line

Abstract

The utility model relates to the technical field of coating, in particular to an automatic coating assembly line which comprises a first conveying wheel set, and a surface spraying structure is arranged on the first conveying wheel set. The conveying tail end of the first conveying wheel set is connected with the conveying starting end of the second conveying wheel set, and the conveying direction of the second conveying wheel set is inclined relative to the conveying direction of the first conveying wheel set. The conveying inclined end of the second conveying wheel set is connected with one side of a third conveying wheel set, the conveying direction of the third conveying wheel set is consistent with the conveying direction of the third conveying wheel set, the conveying tail end of the third conveying wheel set is connected with the conveying starting end of a fourth conveying wheel set, and a steering assembly is arranged between the third conveying wheel set and the fourth conveying wheel set. A surface spraying structure is arranged on the fourth conveying wheel set, a bottom face spraying structure is arranged on the bottom face of the fourth conveying wheel set, and a drying assembly is arranged at the conveying tail end of the fourth conveying wheel set. The utility model solves the technical problem of quickly spraying and drying all surfaces of an object in a coating assembly line under the condition that the object is continuously conveyed.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and more specifically, to an automated coating production line. Background Technology

[0002] Coating is the process of spraying paint onto the surface of an object. An automated coating production line is a set of automated spraying production equipment that uses a conveyor to move workpieces at a certain speed and direction, moving them to the corresponding designated locations in the process flow. When the workpiece passes through the automatic spraying device, it undergoes precise spraying. Simultaneously, a drying device dries and cures the sprayed workpiece.

[0003] If every surface of an object needs to be coated in an existing automated coating production line, it requires more processes or pauses between processes to adjust the coating, which has a certain impact on efficiency.

[0004] A Chinese utility model patent, titled "A Filter Housing Spraying Device" and with publication number CN217094012U, includes a production line conveyor. The conveyor has a fixed block at its top, with a gear seat rotatably connected to the top of the fixed block. The gear seat has a mounting groove at its top, within which a housing is housed. The device housing contains a partition that divides the space into a spraying chamber and a drying chamber. This utility model allows the gear seat to rotate as it moves along with the production line conveyor, then sprays the housing evenly through several nozzles, creating a streamlined production line operation.

[0005] Although this invention can evenly rotate and spray the surface of an object, it still cannot spray the bottom surface of the object, and cannot achieve the effect of quickly spraying all surfaces. Utility Model Content

[0006] The purpose of this application is to provide an automatic coating production line that solves the technical problem of rapidly spraying and drying all surfaces of an object while the object is being transported continuously.

[0007] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0008] An automated coating production line includes a conveyor wheel assembly with a surface spraying structure mounted on it.

[0009] Preferably, the conveying end of the first conveying wheel group is connected to the conveying starting end of the second conveying wheel group, and the conveying direction of the second conveying wheel group is inclined relative to the conveying direction of the first conveying wheel group.

[0010] Preferably, the conveying inclined end of the second conveying wheel set is connected to one side of the third conveying wheel set, the conveying direction of the third conveying wheel set is consistent with the conveying direction of the first conveying wheel set, and the second conveying wheel set and the third conveying wheel set are arranged side by side.

[0011] The conveying end of the third conveying wheel set is connected to the conveying starting end of the fourth conveying wheel set, and a turning assembly is arranged between the third conveying wheel set and the fourth conveying wheel set.

[0012] Preferably, the fourth conveying wheel set comprises a fourth base and a fourth roller shaft, the top of the fourth base is provided with the fourth roller shaft on both sides in an inclined manner, the inclined bottom end of the fourth roller shaft is located inside the fourth base, and the inclined top end of the fourth roller shaft is located outside the fourth base.

[0013] Preferably, the fourth conveying wheel set is provided with a surface spraying structure, the bottom surface of the fourth conveying wheel set is provided with a bottom surface spraying structure, and the conveying end of the fourth conveying wheel set is provided with a drying assembly.

[0014] Preferably, the first conveying wheel set comprises a first base and a first roller shaft.

[0015] Preferably, the two ends of the first roller shaft are vertically rotatably arranged on the inner walls on both sides of the top of the first base, and the top of the first base is uniformly arranged with a plurality of first roller shafts along the length direction thereof.

[0016] Preferably, the second conveying wheel set comprises a second base and a second roller shaft, and the third conveying wheel set comprises a third base and a third roller shaft.

[0017] Preferably, the two ends of the second roller shaft are arranged on the inner walls on both sides of the top of the second base in an inclined manner, and the top of the second base is uniformly arranged with a plurality of second roller shafts along the length direction thereof.

[0018] Preferably, the two ends of the third roller shaft are vertically rotatably arranged on the inner walls on both sides of the top of the third base, and the top of the third base is uniformly arranged with a plurality of third roller shafts along the length direction thereof.

[0019] Preferably, the first end of the second roller shaft is close to one end of the third roller shaft, and the first end of the second roller shaft is closer to the first conveying wheel set than the other end thereof.

[0020] Preferably, the conveying direction of the second conveying wheel set is from the conveying starting end of the second conveying wheel set to the conveying end of the third conveying wheel set.

[0021] Preferably, the surface spraying structure comprises a vertical plate, the top of the vertical plate is provided with a top plate, the top plate is vertically provided with a top nozzle, and the nozzle of the top nozzle faces the top surface of the first conveying wheel set or the fourth conveying wheel set.

[0022] Preferably, the inner side of the vertical plate is provided with a side nozzle, and the nozzle of the side nozzle faces the inside of the first conveying wheel set or the fourth conveying wheel set.

[0023] Preferably, the inner side wall surface of the vertical plate is arranged obliquely relative to the top plate surface, and the included angle between the inner side wall surface of the vertical plate and the top plate surface is greater than ninety degrees.

[0024] Preferably, a sliding groove is vertically arranged on the outer wall surface of the vertical plate, the top plate is vertically and slidingly connected in the sliding groove, and at least one threaded hole is formed through the plate surface of the top plate.

[0025] Preferably, a bolt member is arranged in the threaded hole in a threaded matching mode, and a threaded end of the bolt member abuts against a bottom surface of the sliding groove.

[0026] Preferably, the turning assembly comprises a fixed plate and a roller, the fixed plate is fixed at a conveying end of the third conveying wheel set and located at a side of the third conveying wheel set close to the second conveying wheel set, the roller is rotationally arranged on the fixed plate and located in a conveying direction of the third conveying wheel set.

[0027] Preferably, the drying assembly comprises a temperature insulation sleeve plate, the temperature insulation sleeve plate is arranged at a conveying end of the fourth conveying wheel set, and a plurality of heating pipes are arranged in the temperature insulation sleeve plate.

[0028] The technical scheme has at least the following advantages and beneficial effects:

[0029] In the utility model, the top surface and the two side surfaces of the object are automatically sprayed through the setting of the first conveying wheel set and the surface spraying structure.

[0030] In the utility model, the object placed freely is offset to the third conveying wheel set through the setting of the second conveying wheel set, the third conveying wheel set and the turning assembly, the left-right horizontal position of the object is limited, only linear motion is carried out, positioning is realized, and accurate turning is facilitated.

[0031] In the utility model, the roller only contacts the edge line of the object after spraying through the setting of the fourth conveying wheel set, and the influence on the spraying surface in the conveying process is reduced. DRAWINGS

[0032] Figure 1 It is a structural schematic view of the utility model.

[0033] Figure 2 It is a front view structural schematic view of the utility model.

[0034] Figure 3 It is a top view structural schematic view of the utility model.

[0035] Figure 4 It is a rear view structural schematic view of the utility model.

[0036] Figure 5 It is a partial structural schematic view of the surface spraying structure in the utility model.

[0037] In the figure: 1-transport wheel group one, 101-first base, 102-first roller shaft, 103-first drive assembly, 2-surface spraying structure, 201-vertical plate, 202-top plate, 203-top nozzle, 204-top liquid pipe, 205-side nozzle, 206-slotted hole, 207-threaded hole, 3-transport wheel group two, 301-second base, 302-second roller shaft, 303-second drive assembly, 4-transport wheel group three, 401-third base, 402-third roller shaft, 403-third drive assembly, 5-turning assembly, 501-fixed plate, 502-roller, 6-transport wheel group four, 601-fourth base, 602-fourth roller shaft, 603-fourth drive assembly, 7-bottom surface spraying structure, 701-bottom nozzle, 702-bottom liquid pipe, 8-drying assembly, 801-temperature insulation sleeve plate, 802-heating pipe. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. If the terms "center", "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. It should also be noted that, unless otherwise explicitly specified and limited, if the terms "set", "install", "connect" appear, they should be understood broadly, for example, they can be fixedly connected, or detachably connected, or integrally connected; they can be mechanically connected, or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or the connection between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] EMBODIMENT

[0041] Please refer to Figures 1-5The utility model provides a kind of automatic coating assembly line, including conveying wheel group one 1, surface spraying structure 2, conveying wheel group two 3, conveying wheel group three 4, steering assembly 5, conveying wheel group four 6, bottom surface spraying structure 7, drying assembly 8.

[0042] Further, conveying wheel group one 1 is the starting end of the entire automatic coating assembly line, and the coated object enters the assembly line for coating work from conveying wheel group one 1.

[0043] Conveying wheel group one 1 is provided with surface spraying structure 2, which can spray the upper surface and the left and right side surfaces of the object. During spraying, the conveying of conveying wheel group one 1 will not stop.

[0044] Further, the conveying end of conveying wheel group one 1 is connected to the conveying starting end of conveying wheel group two 3. The conveying direction of conveying wheel group two 3 is inclined relative to the conveying direction of conveying wheel group one 1, so that the object on conveying wheel group two 3 is offset to the conveying inclined end of conveying wheel group two 3 during conveying.

[0045] The conveying inclined end of conveying wheel group two 3 is connected to one side of conveying wheel group three 4. The conveying direction of conveying wheel group three 4 is consistent with the conveying direction of conveying wheel group. Conveying wheel group two 3 and conveying wheel group three 4 are arranged side by side, so that the object on conveying wheel group two 3 is offset from the inclined end to conveying wheel group three 4 for conveying.

[0046] Preferably, since the position of the object is not fixed when it is placed on conveying wheel group one 1, after the top surface and the side surfaces of the object are sprayed, the remaining surfaces need to be positioned for further spraying on the assembly line. This facilitates the adjustment of the sprayed surfaces of the object.

[0047] Therefore, when the object reaches conveying wheel group two 3, it is continuously conveyed while being offset towards conveying wheel group three 4. After the entire object is offset to conveying wheel group three 4, it will only be conveyed in a straight line by conveying wheel group three 4. At this time, the position of the object is fixed after the offset is completed, thereby positioning the object for adjusting the direction of the object.

[0048] Further, the conveying end of conveying wheel group three 4 is connected to the conveying starting end of conveying wheel group four 6. Steering assembly 5 is arranged between conveying wheel group three 4 and conveying wheel group four 6.

[0049] The steering assembly 5 includes a fixed plate 501 and a roller 502. The fixed plate 501 is fixed to the conveying end of conveying wheel group three 4 and located on the side of conveying wheel group three 4 close to conveying wheel group two 3. The roller 502 is rotatably arranged on the fixed plate 501 and located in the conveying direction of conveying wheel group three 4.

[0050] Preferably, when the article is transmitted from the third conveying wheel set 4, the front end surface side of the article is blocked by the roller 502, and then the article is driven by the third conveying wheel set 4 to make a circular motion along the axis of the roller 502. The roller 502 rotates, so that the front and rear end surfaces of the article are rotated to the left and right ends during the conveying process, instead of the left and right end surfaces, and the left and right end surfaces of the article are rotated to the front and rear ends, instead of the front and rear ends, to realize the rotation of the article by 90 degrees during the conveying process.

[0051] The surface spraying structure 2 is arranged on the third conveying wheel set 4, the bottom surface of the third conveying wheel set 4 is provided with the bottom surface spraying structure 7, and the conveying end of the third conveying wheel set 4 is provided with the drying assembly 8.

[0052] Preferably, the turned article enters the third conveying wheel set 4, the surface spraying structure 2 sprays the left and right end surfaces that are not sprayed after turning, and the bottom surface spraying structure 7 sprays the bottom surface of the article, so that all the surfaces of the article are sprayed, and then the sprayed article is conveyed to the drying assembly 8 for rapid drying of the coating.

[0053] Please refer to Figure 3 In the embodiment, the first conveying wheel set 1 includes a first base 101, a first roller shaft 102, and a first driving assembly 103.

[0054] Specifically, the two ends of the first roller shaft 102 are vertically rotatably arranged on the inner walls on both sides of the top of the first base 101, the top of the first base 101 is uniformly arranged with a plurality of first roller shafts 102 along the length direction, one side of the first base 101 is fixedly connected with the first driving assembly 103, and the driving end of the first driving assembly 103 is fixedly connected with the first roller shaft 102, so as to drive the first roller shaft 102 to rotate and realize the conveying of the article.

[0055] Further, the second conveying wheel set 3 includes a second base 301, a second roller shaft 302, and a second driving assembly 303.

[0056] The third conveying wheel set 4 includes a third base 401, a third roller shaft 402, and a third driving assembly 403.

[0057] Specifically, the two ends of the second roller shaft 302 are obliquely rotatably arranged on the inner walls on both sides of the top of the second base 301, the top of the second base 301 is uniformly arranged with a plurality of second roller shafts 302 along the length direction, and one side of the second base 301 is fixedly connected with the second driving assembly 303.

[0058] Specifically, the two ends of the third roller shaft 402 are vertically rotatably arranged on the inner walls on both sides of the top of the third base 401, the top of the third base 401 is uniformly arranged with a plurality of third roller shafts 402 along the length direction, and the third base 401 is fixedly connected with the third driving assembly 403 on one side, and the driving end of the third driving assembly 403 is fixedly connected with the third roller shaft 402, so as to drive the third roller shaft 402 to rotate.

[0059] The first end of the second roller shaft 302 is close to one end of the third roller shaft 402, and the first end of the second roller shaft 302 is close to the conveying wheel set one 3 relative to the other end, so that the second roller shaft 302 is arranged in an inclined manner relative to the first roller shaft 102 and the third roller shaft 402, and the conveying direction of the conveying wheel set two 3 is from the conveying starting end of the conveying wheel set two 3 to the conveying end of the conveying wheel set three 4.

[0060] It is worth noting that the wall height of the top side wall of the second base 301 and the third base 401, which are abutted and connected by the conveying wheel set two 3 and the conveying wheel set three 4, is lower than the conveying surface of the roller shaft, so that the articles are not blocked and interfered by the base when passing from the conveying wheel set two 3 to the conveying wheel set three 4.

[0061] Further, the conveying wheel set four 6 comprises a fourth base 601, a fourth roller shaft 602, and a fourth driving assembly 603.

[0062] Specifically, the fourth base 601 is arranged with the fourth roller shaft 602 on both sides of the top in an inclined manner, the inclined bottom end of the fourth roller shaft 602 is located inside the top surface of the fourth base 601, the inclined top end of the fourth roller shaft 602 is located on the outer wall of the fourth base 601, the two symmetrical fourth roller shafts 602 on the fourth base 601 form a V-shaped structure, the fourth driving assembly 603 is fixedly arranged on the outer wall of the fourth base 601, and the driving end of the fourth driving assembly 603 is fixedly connected with the fourth roller shaft 602.

[0063] When the articles are in the conveying wheel set four 6, the fourth roller shaft 602 in a V-shaped structure rolls, which can maintain the straight conveying of the articles, and can only roll in contact with the edges and corners of the articles through the inclined shaft surface, so as to reduce the contact area between the fourth roller shaft 602 and the sprayed end surface of the articles, and avoid scratching the coating when the articles are conveyed after being coated.

[0064] Please refer to Figures 2-5 In the embodiment, the surface spraying structure comprises a vertical plate 201, a top plate 202, a top nozzle 203, a top liquid pipe 204, a side nozzle 205, a sliding groove 206, and a threaded hole 207.

[0065] Specifically, two vertical plates 201 are vertically fixed on the first base 101 (or the fourth base 601), and a top plate 202 is slidably arranged on the top of the vertical plate 201. A plurality of top nozzles 203 are vertically arranged on the top plate 202, and the spray nozzles of the top nozzles 203 are directed to the top surface of the conveying wheel set one 1 or the conveying wheel set four 6, for spraying the top surface of the object. The front end of the top nozzle 203 is a spray nozzle, and the rear end is connected to a top liquid pipe 204. The top liquid pipe 204 is connected to an external pump assembly. The spraying liquid is pumped into the top liquid pipe 204 by the pump assembly, and then sprayed out by the top nozzle 203 under high pressure, thereby realizing the spraying function.

[0066] The inner side of the vertical plate 201 is provided with a plurality of side nozzles 205 arranged in an up-down direction. The spray nozzles of the side nozzles 205 are directed to the left and right end surfaces of the object in the conveying wheel set one 1 or the conveying wheel set four 6. The side nozzles 205 are also connected to the top liquid pipe 204.

[0067] The plurality of top nozzles and the plurality of side nozzles 205 are connected to the same top liquid pipe 204.

[0068] The inner side wall surface of the vertical plate 201 is arranged obliquely relative to the plate surface of the top plate 202, and the oblique angle between the inner side wall surface of the vertical plate 201 and the plate surface of the top plate 202 is greater than ninety degrees. The side nozzles 205 on the inner wall of the vertical plate 201 are arranged obliquely, which increases the spraying area of the side nozzles 205 on the side surface of the object, and facilitates more uniform coverage of the side surface of the object.

[0069] In addition, the outer wall surface of the vertical plate 201 is also vertically provided with a sliding groove 206. The sliding groove 206 is vertically and slidably connected to the top plate 202, so that the top plate 202 can vertically slide. At least one threaded hole 207 is formed in the plate surface of the top plate 202. A threaded bolt is threadedly arranged in the threaded hole 207. The threaded end of the threaded bolt abuts against the bottom surface of the sliding groove 206. When the threaded bolt is tightened in the threaded hole 207, the top plate 202 is fixed by the friction assembly of the threaded bolt, so that the top plate 202 is no longer displaced, facilitating spraying. When the spraying height needs to be adjusted, the threaded bolt can be loosened for adjustment.

[0070] Further, the bottom spraying structure 7 comprises a bottom nozzle 701 and a bottom liquid pipe 702.

[0071] A plurality of bottom nozzles 701 are vertically arranged through the fourth base 601. The spray nozzles of the bottom nozzles 701 are directed to the upper side of the fourth base 601, for spraying the bottom surface of the object. The other end of the bottom nozzle 701 away from the spray nozzle is connected to the bottom liquid pipe 702. A plurality of bottom nozzles 701 are connected to one bottom liquid pipe 702. The bottom liquid pipe 702 is connected to an external pump assembly.

[0072] Further, in the embodiment, the drying assembly 8 comprises a heat insulation sleeve plate 801 fixedly arranged at the conveying end of the conveying wheel set 6 and completely covering the articles on the fourth roller shaft 602, and a plurality of heating pipes 802 are arranged in the heat insulation sleeve plate 801, so that the coating on the surface of the articles can be rapidly dried by the heating of the heating pipes 802, thereby improving the efficiency.

[0073] The heat insulation sleeve plate 801 can insulate the temperature and avoid the heat generated by the heating pipes 802 from rapidly escaping, thereby reducing the drying efficiency, and the heating pipes 802 are fixedly arranged on the inner wall of the heat insulation sleeve plate 801 and also arranged on the fourth supporting seat, so that the bottom surface of the articles can be dried.

[0074] Thus far, the embodiments of the utility model have been described in detail. In order to avoid obscuring the concept of the utility model, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions of the utility model herein according to the above description, and the scope of the utility model is defined by the appended claims.

Claims

1. An automatic painting assembly line comprising a first conveying wheel set (1), a surface spraying structure (2) being arranged on the first conveying wheel set (1), characterized in that ； The conveying end of the conveying wheel group one (1) is connected to the conveying starting end of the conveying wheel group two (3), and the conveying direction of the conveying wheel group two (3) is obliquely arranged relative to the conveying direction of the conveying wheel group one (1); One side of the conveying wheel group three (4) is connected to the conveying oblique end of the conveying wheel group two (3), the conveying direction of the conveying wheel group three (4) is consistent with the conveying direction of the conveying wheel group, and the conveying wheel group two (3) and the conveying wheel group three (4) are arranged side by side; The conveying end of the conveying wheel group three (4) is connected to the conveying starting end of the conveying wheel group four (6), and a turning assembly (5) is arranged between the conveying wheel group three (4) and the conveying wheel group four (6); The conveying wheel group four (6) comprises a fourth base (601) and a fourth roller shaft (602), and the fourth roller shaft (602) is obliquely arranged on the top of the fourth base (601) on both sides, the oblique bottom end of the fourth roller shaft (602) is located inside the fourth base (601), and the oblique top end of the fourth roller shaft (602) is located outside the fourth base (601). The conveying wheel group four (6) is provided with a surface spraying structure (2), the bottom surface of the conveying wheel group four (6) is provided with a bottom surface spraying structure (7), and the conveying end of the conveying wheel group four (6) is provided with a drying assembly (8).

2. The automatic painting line according to claim 1, characterized in that, The conveying wheel group one (1) comprises a first base (101) and a first roller shaft (102); The two ends of the first roller shaft (102) are vertically rotatably arranged on the inner walls on both sides of the top of the first base (101), and a plurality of first roller shafts (102) are uniformly arranged on the top of the first base (101) along the length direction.

3. The automatic painting line according to claim 1, characterized in that, The conveying wheel group two (3) comprises a second base (301) and a second roller shaft (302), and the conveying wheel group three (4) comprises a third base (401) and a third roller shaft (402); The two ends of the second roller shaft (302) are obliquely rotatably arranged on the inner walls on both sides of the top of the second base (301), and a plurality of second roller shafts (302) are uniformly arranged on the top of the second base (301) along the length direction. The two ends of the third roller shaft (402) are vertically rotatably arranged on the inner walls on both sides of the top of the third base (401), and a plurality of third roller shafts (402) are uniformly arranged on the top of the third base (401) along the length direction. The first end of the second roller shaft (302) is close to one end of the third roller shaft (402), and the first end of the second roller shaft (302) is close to the conveying wheel group one (1) relative to the other end; The conveying direction of the conveying wheel group two (3) is from the conveying starting end of the conveying wheel group two (3) to the conveying end of the conveying wheel group three (4).

4. The automatic painting line according to claim 1, characterized in that, The surface spraying structure (2) comprises a vertical plate (201), and the top of the vertical plate (201) is provided with a top plate (202), and the top plate (202) is vertically provided with a top nozzle (203), and the nozzle of the top nozzle (203) faces the top surface of the conveying wheel group one (1) or the conveying wheel group four (6); The inner side of the vertical plate (201) is provided with a side nozzle (205), and the nozzle of the side nozzle (205) faces the inside of the conveying wheel group one (1) or the conveying wheel group four (6).

5. An automatic painting line as claimed in claim 4, characterized in that, The inner side wall surface of the vertical plate (201) is arranged obliquely relative to the plate surface of the top plate (202), and the included angle between the inner side wall surface of the vertical plate (201) and the plate surface of the top plate (202) is greater than ninety degrees.

6. An automatic painting line as claimed in claim 5, characterized in that, The outer wall surface of the vertical plate (201) is vertically provided with a sliding groove (206), the top plate (202) is vertically and slidingly connected in the sliding groove (206), and at least one threaded hole (207) penetrates through the plate surface of the top plate (202); A threaded bolt is arranged in the threaded hole (207) in a threaded matching mode, and the threaded end of the threaded bolt abuts against the bottom surface of the sliding groove (206).

7. The automatic painting line as claimed in claim 1, wherein The turning assembly (5) comprises a fixed plate (501) and a roller (502), the fixed plate (501) is fixed at the conveying end of the third conveying wheel set (4) and is located at the side of the third conveying wheel set (4) close to the second conveying wheel set (3), the roller (502) is rotatably arranged on the fixed plate (501) and is located in the conveying direction of the third conveying wheel set (4).

8. The automatic painting line as claimed in claim 1, wherein The drying assembly (8) comprises a heat insulation sleeve plate (801), the heat insulation sleeve plate (801) is arranged at the conveying end of the fourth conveying wheel set (6), and a plurality of heating pipes (802) are arranged in the heat insulation sleeve plate (801).

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