Building board spraying process

Abstract

The invention relates to the technical field of plate spraying, and discloses a building plate spraying process which comprises the following steps: S1, polishing the surface of a building plate, removing impurities on the outer surface of the building plate, placing the pretreated building plate on a rack table of a spraying device, and spraying the building plate on the rack table; and the building boards are transversely conveyed through the conveying assembly on the rack table. According to the building board spraying process, the first conveying part is arranged for conveying the building board with the side edge sprayed, and the second conveying part is arranged for conveying the building board with the side edge sprayed, so that the spraying mechanism can conveniently spray the building board; and the building board with the side edge being sprayed can be dried through the first drying piece, the situation that when the building board is conveyed, coating which is thoroughly solidified on the building board adheres to the second conveying piece is avoided, and then the integrity of spraying machining of the building board is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plate spraying, in particular to a building plate spraying process. Background Art

[0002] Building boards are generally used in home decoration, and are used to make cabinets, doors and windows, or floors. In order to extend the service life of wood and expand the use of wood, it is necessary to perform anti-corrosion spraying on the surface of wooden boards. The Chinese invention patent with publication number CN115318480B discloses a board spraying device and a spraying method for wardrobe processing. The bottom and the retaining edge of the lifting limit structure can be used to limit the upper and lower sides of the board to prevent the board from shifting. There is no need to fix the board separately. At the same time, the board surface can be cleaned during the board conveying process. In addition, the device can realize multi-sided spraying of the board through the spraying device, thereby improving the spraying efficiency.

[0003] In the related art, in order to improve the efficiency of the spraying processing of building boards, the existing board spraying processing generally adopts the board conveying method to convey the board to the spraying position, and the spraying treatment is carried out through the spraying mechanism. Although the existing board spraying process can spray the front and back of the building boards, in order to ensure its stability during transportation, the existing building boards generally provide corresponding fixing mechanisms to position the boards. For example, there will be obstructions at the position where the conveying mechanism contacts the board and the position where the side of the board is positioned, so that the area cannot be sprayed during the spraying processing of the board. Therefore, manual repair of the unsprayed position is still required later, which reduces the integrity of the building board spraying. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a building board spraying process, which is used to transport the building boards sprayed on the sides through the setting of a first conveying member, and is used to transport the building boards after spraying on the sides through the setting of a second conveying member, so as to facilitate the spraying mechanism to spray the building boards, and the building boards sprayed on the sides can be dried by the first drying member to avoid the completely solidified paint on the building boards adhering to the second conveying member when the building boards are transported, thereby improving the integrity of the building board spraying process, and solving the problem that the existing building board spraying process can usually only spray the front and back sides of the boards when spraying the building boards, and cannot spray the sides of the boards, thereby reducing the integrity of the building board spraying.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a building board spraying process, comprising the following steps:

[0008] S1. Grind the surface of the building board to remove impurities on the outer surface of the building board, place the pre-treated building board on the rack of the spraying device, and transport the building board horizontally through the conveying assembly on the rack;

[0009] S2, conveying the building board to the first spraying part in the spraying mechanism by a supporting manner through the first conveying part in the conveying assembly, spraying two side edges of the building board by the first spraying part, and conveying the building board by the first conveying part in a middle supporting manner, so that the two side edges of the building board are exposed;

[0010] S3, drying the building board after side spraying by the first drying member in the drying mechanism, and then continuously conveying the dried building board laterally by the second conveying member in the conveying assembly in a supporting manner, wherein the second conveying member conveys the building board by supporting the two sides of the building board, so that the middle part of the bottom of the building board is exposed;

[0011] S4. Finally, the middle part of the bottom and top surfaces of the building board is sprayed by the second spraying member in the spraying mechanism, and the building board after the bottom and top surfaces are sprayed is dried by the second drying member.

[0012] Preferably, it further comprises a spraying device for spraying the building board, the spraying device comprises a frame platform, and a conveying assembly for transversely conveying the building board is arranged on the top of the frame platform;

[0013] The frame is provided with a spraying mechanism for spraying the building board, the spraying mechanism comprising a first spraying member for spraying the two sides of the building board and a second spraying member for spraying the top, bottom and both ends of the building board;

[0014] The interior of the frame is provided with a drying mechanism for drying the sprayed building boards, and the drying mechanism includes a first drying component for drying the sprayed building boards on the two sides and a second drying component for drying the sprayed building boards on the top, bottom and both ends.

[0015] Preferably, the conveying assembly includes a first conveying member for conveying the building board for spraying and drying the two side edges and a second conveying member for conveying the building board for spraying and drying the top, bottom and both ends of the building board;

[0016] The first conveying member comprises two first transmission shafts rotatably connected to the inside of the frame, the outer surfaces of the two first transmission shafts are connected by two first conveyor belts, and the tops of the two first conveyor belts are in contact with the center of the bottom of the building board;

[0017] The second conveying member includes two second transmission shafts rotatably connected to the inside of the frame, and the outer surfaces of the two second transmission shafts are transmission-connected through two second conveyor belts, and the tops of the two second conveyor belts are respectively in contact with the two side surfaces of the bottom of the building board.

[0018] Preferably, a motor for rotationally driving one of the first transmission shafts or one of the second transmission shafts is fixedly connected to the frame, and one of the first transmission shafts and one of the second transmission shafts are connected via a transmission belt.

[0019] Preferably, the first spraying member comprises two U-shaped frames, and the interiors of the two U-shaped frames are fixedly connected to a plurality of first spraying nozzles arranged in a U shape;

[0020] The second spraying member includes two spraying pipes fixed inside the frame, the two spraying pipes are respectively located at the top and bottom of the conveying assembly, and the outer surfaces of the two spraying pipes are fixedly connected to a row of second spraying nozzles, and the two rows of second spraying nozzles are symmetrical;

[0021] A material box is installed at the bottom of the frame, and the material box is communicated with the inside of two U-shaped frames and two spraying pipes respectively through two feeding pipes, and solenoid valves are installed on the two feeding pipes.

[0022] Preferably, the first drying member comprises two U-shaped tubes, and the outer surfaces of the two U-shaped tubes are each provided with a plurality of hot air holes arranged in a U shape;

[0023] The second drying component includes a heating main pipe fixed inside the rack, and the outer surfaces of the two heating main pipes are provided with strip-shaped air guide holes. A hot air blower is fixedly connected to the back of the rack, and the hot air outlet of the hot air blower is fixedly connected to the inside of the two U-shaped tubes and the two heating main pipes through two groups of hot air pipes.

[0024] Preferably, a positioning assembly for symmetrically processing the building board on the conveying assembly is provided inside the rack;

[0025] The positioning assembly includes a U-shaped frame fixed to the bottom of the rack platform, the U-shaped frame is internally rotatably connected to a bidirectional threaded rod, the outer surfaces of both ends of the bidirectional threaded rod are threadedly connected to threaded blocks, the two threaded blocks are both slidably connected to the inside of the U-shaped frame, one side of the two threaded blocks is fixedly connected to a positioning plate for symmetrical processing of building panels through a bracket, and one end of the bidirectional threaded rod is fixedly connected to a rotating handle.

[0026] Preferably, the other sides of the two threaded blocks are fixedly connected with connecting frames, and the two connecting frames are connected to the first spraying part and the first drying part.

[0027] (III) Beneficial effects

[0028] Compared with the prior art, the present invention provides a building board spraying process, which has the following beneficial effects:

[0029] 1. The present invention is used to transport building boards that are sprayed on the side through the provision of a first conveying member, and is used to transport building boards that have been sprayed on the side through the provision of a second conveying member, so that the spraying mechanism can spray the unsprayed positions of the building boards, and the building boards that are sprayed on the side can be dried through the first drying member, so as to avoid the completely solidified paint on the building boards adhering to the second conveying member when the building boards are transported, which not only causes pollution to the conveying member, but also reduces the problem of spraying effect of the building boards, thereby improving the integrity of the spraying process of the building boards.

[0030] 2. The present invention arranges two positioning plates to position the two side edges of the building board, thereby ensuring the centering effect of the building board and improving the conveying effect of the conveying assembly on the building board. The rotation of the bidirectional threaded rod can drive the two threaded blocks to move in relative or separate directions. The relative or separate movement of the two threaded blocks can drive the two positioning plates to move relative or separate, thereby satisfying the synchronous centering and positioning work of building boards of different sizes and improving the practicability of the positioning assembly.

[0031] 3. The present invention can drive the first spraying part and the first drying part to be adjusted by the relative or separate movement of the two threaded blocks, thereby meeting the spraying and drying work of plates of different sizes, and by adopting a synchronous driving method with the two positioning plates, the positioning distance of the two positioning plates can be transmitted to the first spraying part and the first drying part, without the need to calibrate the adjustment distance of the first spraying part and the first drying part separately, thereby further improving the convenience of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the steps of the spraying process of the building board of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the spraying device of the present invention;

[0034] Figure 3 For the present invention Figure 2 Schematic diagram of spraying of the spraying device;

[0035] Figure 4 For the present invention Figure 1 Bottom view of the structure of the middle rack;

[0036] Figure 5 For the present invention Figure 2 A schematic structural diagram of the first conveying member;

[0037] Figure 6 For the present invention Figure 5 The structural diagram of the positioning component;

[0038] Figure 7 For the present invention Figure 2 Schematic diagram of the combination of the spraying mechanism and the drying structure;

[0039] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the second conveying member.

[0040] In the figure: 1. Rack table;

[0041] 2. Conveying assembly; 21. Motor; 22. Transmission belt; 23. First conveying member; 231. First transmission shaft; 232. First conveying belt; 24. Second conveying member; 241. Second transmission shaft; 242. Second conveying belt;

[0042] 3. Spraying mechanism; 31. First spraying part; 311. U-shaped frame; 312. First spraying nozzle; 32. Second spraying part; 321. Spraying pipe; 322. Second spraying nozzle; 323. Material box;

[0043] 4. Drying mechanism; 41. First drying element; 411. U-shaped tube; 412. Hot air hole; 42. Second drying element; 421. Heating main pipe; 422. Hot air blower;

[0044] 5. Positioning assembly; 51. U-shaped frame; 52. bidirectional threaded rod; 53. threaded block; 54. positioning plate; 55. connecting frame. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment 1:

[0047] Refer to the attached Figure 1 , a building board spraying process, comprising the following steps:

[0048] S1, grinding the surface of the building board to remove impurities on the outer surface of the building board, placing the pre-treated building board on the rack 1 of the spraying device, and horizontally conveying the building board through the conveying component 2 on the rack 1;

[0049] S2, the first conveying member 23 in the conveying assembly 2 conveys the building board to the first spraying member 31 in the spraying mechanism 3 in a supporting manner, and the first spraying member 31 sprays the two side edges of the building board. The first conveying member 23 conveys the building board in a middle supporting manner, so that the two side edges of the building board are exposed;

[0050] By exposing the two side edges of the building board, it is convenient to spray and dry the two side edges of the building board by the first spraying member 31 and the first drying member 41;

[0051] S3, drying the building board after side spraying by the first drying member 41 in the drying mechanism 4, and then continuously conveying the dried building board laterally by the second conveying member 24 in the conveying assembly 2 in a supporting manner, and the second conveying member 24 conveys the building board by supporting the two sides of the building board, so that the middle part of the bottom of the building board is exposed;

[0052] The middle part of the bottom of the building board is exposed so that the second spraying member 32 can spray the top and bottom surfaces of the building board, thereby improving the integrity of the spraying process of the building board;

[0053] S4. Finally, the middle part of the bottom and top surfaces of the building board is sprayed by the second spraying member 32 in the spraying mechanism 3, and the building board after spraying on the bottom and top surfaces is dried by the second drying member 42.

[0054] Refer to the attached Figures 2 to 8 , and also includes a spraying device for spraying the building board, the spraying device includes a frame 1, and a conveying component 2 for horizontally conveying the building board is arranged on the top of the frame 1;

[0055] The conveying assembly 2 is provided to convey the building board laterally, thereby improving the orderliness of the conveying of the building board and improving the efficiency of the spraying process of the building board;

[0056] A spraying mechanism 3 for spraying the building board is arranged inside the frame 1, and the spraying mechanism 3 includes a first spraying member 31 for spraying the two sides of the building board and a second spraying member 32 for spraying the top, bottom and both ends of the building board;

[0057] The spraying mechanism 3 includes a first spraying member 31 for spraying the two side edges of the building board and a second spraying member 32 for spraying the top, bottom and both ends of the building board, so that the first spraying member 31 is used to preferentially spray the two side edges of the building board, and the second spraying member 32 is used to spray other unsprayed positions of the building board, thereby improving the integrity of the spraying of the building board;

[0058] The rack 1 is provided with a drying mechanism 4 for drying the sprayed building board, and the drying mechanism 4 includes a first drying member 41 for drying the sprayed building board on the two sides and a second drying member 42 for drying the sprayed building board on the top, bottom and both ends;

[0059] The drying mechanism 4 includes a first drying component 41 for drying the building boards after spraying on the two sides and a second drying component 42 for drying the building boards after spraying on the top, bottom and both ends, so that the building boards after spraying on the sides can be dried by the first drying component 41 and the building boards after secondary spraying can be dried by the second drying component 42, thereby improving the drying integrity of the building boards.

[0060] Refer to the attached Figure 1 , Figure 4 , Figure 5 , Figure 7 and Figure 8 The conveying assembly 2 includes a first conveying member 23 for conveying the building board for spraying and drying the two side edges and a second conveying member 24 for conveying the building board for spraying and drying the top, bottom and both ends of the building board;

[0061] The first conveying member 23 is provided to convey the building board sprayed on the side, and the second conveying member 24 is provided to convey the building board sprayed on the side, so that the spraying mechanism 3 can spray the unsprayed position of the building board;

[0062] The first conveying member 23 includes two first transmission shafts 231 rotatably connected to the inside of the frame 1, and the outer surfaces of the two first transmission shafts 231 are connected by two first conveyor belts 232, and the tops of the two first conveyor belts 232 are in contact with the center of the bottom of the building board;

[0063] The building board is conveyed by supporting the middle part of the two first conveyor belts 232, so that the two sides of the building board are exposed, so that the spraying device sprays the two sides of the building board first, so that the subsequent conveying component 2 conveys the building board through the sprayed position, thereby improving the integrity of the spraying of the building board;

[0064] The second conveying member 24 includes two second transmission shafts 241 rotatably connected to the inside of the frame 1, and the outer surfaces of the two second transmission shafts 241 are transmission-connected through two second conveyor belts 242, and the tops of the two second conveyor belts 242 are respectively in contact with the two side surfaces of the bottom of the building board;

[0065] The building board is conveyed by two second conveyor belts 242 in a side support manner, so that the unsprayed positions of the building board are exposed, thereby improving the spraying effect of the subsequent second spraying parts 32 .

[0066] Refer to the attached Figure 1 , Figure 4 , Figure 5 , Figure 7 and Figure 8 A motor 21 for rotating and driving one of the first transmission shafts 231 or one of the second transmission shafts 241 is fixedly connected to the frame 1, and one of the first transmission shafts 231 and one of the second transmission shafts 241 are connected to each other through a transmission belt 22;

[0067] The motor 21 adopts an adjustable speed electric motor in the prior art, and is set using the connection method and encoding method of the prior art, and is used to drive one of the first transmission shafts 231 or the second transmission shaft 241 to rotate. Through the setting of the transmission belt 22, it is used to drive the first conveying member 23 and the second conveying member 24 to connect, thereby forming a rotational drive operation of the entire conveying assembly 2.

[0068] Refer to the attached Figures 6 to 8 The first spraying member 31 includes two U-shaped frames 311, and the interiors of the two U-shaped frames 311 are fixedly connected to a plurality of first spraying nozzles 312 arranged in a U shape;

[0069] The two U-shaped frames 311 are used to discharge the spraying liquid into the two groups of first spraying nozzles 312, and the two sides of the building board are sprayed by the two groups of first spraying nozzles 312, so as to improve the orderliness of the spraying process of the building board;

[0070] The second spraying member 32 includes two spraying tubes 321 fixed inside the frame 1, the two spraying tubes 321 are respectively located at the top and bottom of the conveying assembly 2, and the outer surfaces of the two spraying tubes 321 are fixedly connected with a row of second spraying nozzles 322, and the two rows of second spraying nozzles 322 are symmetrical;

[0071] The spraying liquid is discharged to two rows of second spraying nozzles 322 through two spraying pipes 321, and the top and bottom surfaces of the building board are sprayed through the two rows of second spraying nozzles 322. One row of second spraying nozzles 322 is located between the two second conveyor belts 242, so as to spray the unsprayed positions of the building board, thereby ensuring the integrity of the spraying of the building board;

[0072] A material box 323 is installed at the bottom of the frame 1, and the material box 323 is connected to the inside of the two U-shaped frames 311 and the two spraying pipes 321 through two feeding pipes, and solenoid valves are installed on the two feeding pipes;

[0073] The two feeding pipes are used to discharge the spray paint in the material box 323 into the first spray part 31 and the second spray part 32 . The two solenoid valves are used to control the feeding conditions of the first spray part 31 and the second spray part 32 .

[0074] Embodiment 2: Based on embodiment 1, the difference is that;

[0075] Refer to the attached Figures 6 to 8 The first drying member 41 includes two U-shaped tubes 411, and the outer surfaces of the two U-shaped tubes 411 are provided with a plurality of hot air holes 412 arranged in a U shape;

[0076] The second drying member 42 includes a heating main pipe 421 fixed inside the rack 1, and the outer surfaces of the two heating main pipes 421 are provided with strip-shaped air guide holes. A hot air blower 422 is fixedly connected to the back of the rack 1, and the hot air outlet of the hot air blower 422 is fixedly connected to the inside of the two U-shaped pipes 411 and the two heating main pipes 421 through two sets of hot air pipes.

[0077] The hot air blower 422 is connected to an external power source and a control switch, and is used to discharge the generated hot air to the two heating main pipes 421 and the two U-shaped pipes 411 through the hot air pipe;

[0078] The two U-shaped tubes 411 are used to guide the hot air generated by the hot air blower 422 through a plurality of hot air holes 412 arranged in a U shape, so as to dry the sprayed positions on the two sides of the building board, thereby preventing the completely solidified paint on the building board from adhering to the second conveying member 24 when the building board is conveyed, which not only causes pollution to the conveying member, but also reduces the spraying effect of the building board;

[0079] The hot air is discharged to the building board formed by the secondary spraying through the strip-shaped air guide holes opened on the two heating main pipes 421, thereby completing the final drying of the building board.

[0080] Embodiment 3: Based on embodiment 1, the difference is that;

[0081] Refer to the attached Figure 6 , a positioning assembly 5 for symmetrically processing the building board on the conveying assembly 2 is arranged inside the frame 1;

[0082] The positioning assembly 5 is used to center the spray-coated building board to ensure the stability of its transportation and the effect of spraying.

[0083] The positioning assembly 5 includes a U-shaped frame 51 fixed to the bottom of the frame 1, a bidirectional threaded rod 52 is rotatably connected inside the U-shaped frame 51, and thread blocks 53 are threadedly connected to the outer surfaces of both ends of the bidirectional threaded rod 52, and the two thread blocks 53 are slidably connected to the inside of the U-shaped frame 51, and one side of the two thread blocks 53 is fixedly connected to a positioning plate 54 for symmetrically processing the building board through a bracket, and one end of the bidirectional threaded rod 52 is fixedly connected to a rotating handle;

[0084] By setting up two positioning plates 54, the two side edges of the building board are positioned to ensure the centering effect of the building board, thereby improving the conveying effect of the conveying component 2 on the building board. By rotating the handle, the bidirectional threaded rod 52 can be driven to rotate, and then the two threaded blocks 53 can be driven to move in relative or separate directions. The relative or separate movement of the two threaded blocks 53 can drive the two positioning plates 54 to move relative or separate, thereby satisfying the synchronous centering and positioning work of building boards of different sizes and improving the practicality of the positioning component 5.

[0085] The other sides of the two threaded blocks 53 are fixedly connected with connecting frames 55, and the two connecting frames 55 are connected to the first spraying member 31 and the first drying member 41;

[0086] By the movement of the two threaded blocks 53 in the relative or separate directions or in the separate directions, the first spraying member 31 and the first drying member 41 can be driven to adjust, thereby meeting the spraying and drying work of plates of different sizes, and by adopting a synchronous driving mode with the two positioning plates 54, the positioning distance of the two positioning plates 54 can be transmitted to the first spraying member 31 and the first drying member 41, without the need to calibrate the adjustment distance of the first spraying member 31 and the first drying member 41 separately, thereby further improving the convenience of adjustment;

[0087] The two U-shaped frames 311 in the first spraying member 31 and the two U-shaped tubes 411 in the first drying member 41 are fixedly connected to the two connecting frames 55 respectively.

[0088] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A building board spraying process, characterized in that: The following steps are involved: S1, grinding the surface of the building board to remove impurities on the outer surface of the building board, placing the pre-treated building board on a frame (1) of a spraying device, and horizontally conveying the building board through a conveying component (2) on the frame (1); S2, using the first conveying member (23) in the conveying assembly (2) to convey the building board to the first spraying member (31) in the spraying mechanism (3) in a supporting manner, spraying the two side edges of the building board by the first spraying member (31), wherein the first conveying member (23) conveys the building board in a middle supporting manner, so that the two side edges of the building board are exposed; S3, drying the building board after spraying on the side by using the first drying member (41) in the drying mechanism (4), and then continuously conveying the dried building board laterally by using the second conveying member (24) in the conveying assembly (2) in a supporting manner, wherein the second conveying member (24) conveys the building board by supporting the two sides of the building board, so that the middle part of the bottom of the building board is exposed; S4. Finally, the middle part between the bottom and top surfaces of the building board is sprayed by the second spraying member (32) in the spraying mechanism (3), and the building board after spraying on the bottom and top surfaces is dried by the second drying member (42).

2. A building board spraying process according to claim 1, characterized in that: It also comprises a spraying device for spraying building boards, the spraying device comprising a frame platform (1), and a conveying component (2) for transversely conveying the building boards is arranged on the top of the frame platform (1); A spraying mechanism (3) for spraying the building board is arranged inside the machine frame (1), and the spraying mechanism (3) comprises a first spraying member (31) for spraying the two sides of the building board and a second spraying member (32) for spraying the top, bottom and both ends of the building board; The frame (1) is provided with a drying mechanism (4) for drying the sprayed building board inside, and the drying mechanism (4) comprises a first drying member (41) for drying the sprayed building board on two sides, and a second drying member (42) for drying the sprayed building board on the top, bottom and both ends.

3. A building board spraying process according to claim 1, characterized in that: The conveying assembly (2) comprises a first conveying member (23) for conveying the building board for spraying and drying the two side edges, and a second conveying member (24) for conveying the building board for spraying and drying the top, bottom and both ends of the building board; The first conveying member (23) comprises two first transmission shafts (231) rotatably connected to the inside of the frame platform (1); the outer surfaces of the two first transmission shafts (231) are connected in transmission via two first conveyor belts (232); the tops of the two first conveyor belts (232) are in contact with the center position of the bottom of the building board; The second conveying member (24) comprises two second transmission shafts (241) rotatably connected to the inside of the frame platform (1); the outer surfaces of the two second transmission shafts (241) are transmission-connected via two second conveyor belts (242); the tops of the two second conveyor belts (242) are respectively in contact with two side surfaces of the bottom of the building board.

4. A building board spraying process according to claim 3, characterized in that: A motor (21) for rotationally driving one of the first transmission shafts (231) or one of the second transmission shafts (241) is fixedly connected to the frame (1), and one of the first transmission shafts (231) and one of the second transmission shafts (241) are connected in transmission via a transmission belt (22).

5. A building board spraying process according to claim 1, characterized in that: The first spraying member (31) comprises two U-shaped frames (311), and a plurality of first spraying nozzles (312) arranged in a U shape are fixedly connected inside the two U-shaped frames (311); The second spraying member (32) comprises two spraying pipes (321) fixed inside the frame (1), the two spraying pipes (321) are respectively located at the top and bottom of the conveying component (2), and the outer surfaces of the two spraying pipes (321) are both fixedly connected to a row of second spraying nozzles (322), and the two rows of second spraying nozzles (322) are symmetrical; A material box (323) is installed at the bottom of the frame (1), and the material box (323) is connected to the inside of two U-shaped frames (311) and two spray pipes (321) respectively through two supply pipes, and solenoid valves are installed on the two supply pipes.

6. A building board spraying process according to claim 1, characterized in that: The first drying element (41) comprises two U-shaped tubes (411), and the outer surfaces of the two U-shaped tubes (411) are each provided with a plurality of hot air holes (412) arranged in a U shape; The second drying component (42) comprises a heating main pipe (421) fixed inside the frame (1); the outer surfaces of the two heating main pipes (421) are provided with strip-shaped air guide holes; a hot air blower (422) is fixedly connected to the back of the frame (1); the hot air outlet of the hot air blower (422) is fixedly connected to the inside of the two U-shaped pipes (411) and the two heating main pipes (421) through two groups of hot air pipes.

7. A building board spraying process according to claim 1, characterized in that: A positioning component (5) for symmetrically processing the building board on the conveying component (2) is arranged inside the machine frame (1); The positioning assembly (5) comprises a U-shaped frame (51) fixed to the bottom of the frame platform (1); a bidirectional threaded rod (52) is rotatably connected inside the U-shaped frame (51); the outer surfaces of both ends of the bidirectional threaded rod (52) are threadedly connected to threaded blocks (53); the two threaded blocks (53) are slidably connected to the inside of the U-shaped frame (51); one side of the two threaded blocks (53) is fixedly connected to a positioning plate (54) for symmetrically processing the building board through a bracket; and one end of the bidirectional threaded rod (52) is fixedly connected to a rotating handle.

8. A building board spraying process according to claim 7, characterized in that: The other sides of the two threaded blocks (53) are fixedly connected with a connecting frame (55), and the two connecting frames (55) are connected to the first spraying member (31) and the first drying member (41).

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