Gypsum plaster board surface spraying device and spraying method thereof

Abstract

The invention belongs to the technical field of gypsum plaster board surface spraying, and discloses a gypsum plaster board surface spraying device and a spraying method thereof.The gypsum plaster board surface spraying device comprises a workbench, an auxiliary mechanism is arranged in the workbench and extends to the outer side of the workbench, and the auxiliary mechanism comprises a feeding component, an adjusting component and a driving component; the auxiliary mechanism comprises a U-shaped frame, the U-shaped frame is fixedly connected to the top of the workbench, and four electric push rods are fixedly connected to the inner wall of the top of the U-shaped frame. The four electric push rods can be started, when the two fan blades are close to the gypsum plaster board body, the two rolling shafts can be driven by the two sliding blocks to reciprocate left and right, and due to the fact that the two gears are matched with the two racks correspondingly, the two rolling shafts are driven by the two sliding blocks to reciprocate left and right; by means of the structure, the two first rolling shafts can rotate while moving, and by means of the structure, the two fan blades can rotate while moving left and right in a reciprocating mode, so that the purpose of increasing the drying speed of the sprayed material on the surface of the gypsum plaster board body is achieved, and the working efficiency can be improved to the maximum degree.

Description

Technical Field

[0001] The present application relates to the technical field of surface spraying of gypsum boards, and more specifically, to a surface spraying device and a spraying method for gypsum boards. Background Art

[0002] Paper-faced gypsum board is made of building gypsum as the main raw material, with appropriate additives and fibers as the board core, and special paperboard as the surface. For example, Taishan series paper-faced gypsum board is a lightweight building thin board made of desulfurized gypsum, phosphogypsum or natural gypsum and surface paper as the main raw materials, with appropriate amounts of fiber, starch, coagulant, foaming agent and water.

[0003] Existing paper-faced gypsum boards, no matter how large, do not have a drying structure. After the slurry is sprayed on the gypsum board, it needs to dry for a period of time. Therefore, it needs to be left for a period of time before stacking. This process will waste a lot of time and greatly reduce work efficiency.

[0004] In order to solve the above problems, the present application provides a gypsum board surface spraying device and a spraying method thereof. Summary of the Invention

[0005] The present application provides a gypsum board surface spraying device and a spraying method thereof using the following technical solutions:

[0006] A gypsum board surface spraying device and a spraying method thereof, comprising a workbench, an auxiliary mechanism provided inside the workbench, the auxiliary mechanism extending to the outside of the workbench, the auxiliary mechanism comprising a feeding component, an adjusting component and a driving component;

[0007] The auxiliary mechanism includes a U-shaped frame, which is fixedly connected to the top of the workbench, and four electric push rods are fixedly connected to the inner wall of the top of the U-shaped frame. The bottom ends of the four electric push rods are fixedly connected to two connecting frames. A movable groove is opened at the bottom of the two connecting frames, and a rack is fixedly embedded in the two movable grooves. Gears are meshed in the two racks, and rollers are fixedly embedded in the two gears. The bottom ends of the two rollers are fixedly connected to fan blades, and sliders are sleeved on the outer sides of the top ends of the two rollers. Reciprocating screws are embedded in the two connecting frames, and the two reciprocating screws are respectively embedded in the two sliders. The two reciprocating screws and the two sliders are connected by a ball nut pair. A spray head is provided between the two connecting frames, and a connecting component is provided on the outside of the spray head.

[0008] Furthermore, the connecting component includes a through slot, which is opened on the top of the U-shaped frame. A hose is fixedly connected to the top of the spray head, and the top end of the hose passes through the through slot and extends to the top of the U-shaped frame.

[0009] With the above technical solution, by providing the through groove, it is possible to avoid restrictions on the hose during later use.

[0010] Furthermore, the two rollers are movably connected to the two sliders through bearings, the two reciprocating screws are movably connected to the two connecting frames through bearings, the tops of the two connecting frames are fixedly connected to guide plates, and the tops of the two guide plates extend to the interior of the two sliders respectively.

[0011] Through the above technical solution, by providing two guide plates, the two sliders can be limited, thereby making the two sliders more stable when moving left and right.

[0012] Furthermore, the driving component includes a motor 1, which is fixedly connected to one side of the front connecting frame, and the output shaft of the motor 1 is fixedly connected to the front reciprocating screw.

[0013] Furthermore, sprocket 1 and sprocket 2 are fixedly sleeved on the outer sides of one end of the two reciprocating screw rods, and chains are sleeved on the outer sides of sprocket 1 and sprocket 2. Sprocket 1 and sprocket 2 are connected by chain drive. Motor 2 is fixedly embedded in the through groove, and a worm is fixedly connected to the output shaft of motor 2. The front end of the worm is rotatably connected to the U-shaped frame, and a worm wheel is meshed with the bottom of the worm, and roller 2 is fixedly embedded in the worm wheel. Both ends of roller 2 are rotatably connected to both sides of the U-shaped frame, and a swing frame is fixedly sleeved on the outer side of roller 2. The bottom end of the swing frame is fixedly connected to the spray head, and the swing frame is located on one side of the worm wheel.

[0014] Through the above technical solution, the two reciprocating screws can rotate synchronously through the cooperation between sprocket 1, sprocket 2 and the chain, and the roller 2 can rotate through the engagement of the worm and the worm wheel.

[0015] Furthermore, the loading component includes a loading box, which is fixedly connected to the top of the workbench, and a plurality of paper-faced gypsum board bodies are embedded in the loading box. A plurality of rotating shafts are movably embedded in the workbench, and rollers are fixedly sleeved on the outer sides of the plurality of rotating shafts, two of which are sleeved on the outer sides of the rotating shafts, and push plates are fixedly connected on both sides of the conveyor belt, and the two push plates are symmetrically arranged with the center line of the conveyor belt as the axis.

[0016] Through the above technical solution, the conveyor belt cooperates with the two push plates, which can facilitate the pushing of the paper-faced gypsum board body in the later stage, thereby achieving the purpose of loading.

[0017] Furthermore, a fixed plate is fixedly connected to the front side of the loading box, and a motor three is fixedly connected to the front side of the fixed plate. The front end of one of the rotating shafts extends into the interior of the fixed plate and is rotatably connected, and the output shaft of the motor three is fixedly connected to one of the rotating shafts.

[0018] Through the above technical solution, by setting the fixing plate, the motor three can be supported, thereby making the motor three more stable during operation.

[0019] Furthermore, the adjusting component includes a lifting plate, which is located on one side of the loading box, and the lifting plate is fitted with one side of the loading box. A screw is threadedly inserted into the inner side of the top of the lifting plate, and a horizontal plate is movably sleeved on the outer side of the top of the screw. The horizontal plate is fixedly connected to the loading box, and a knob is fixedly connected to the top of the screw.

[0020] Through the above technical solution, by setting the screw, the thickness of the lifting plate can be relatively adjusted according to the thickness of the paper-faced gypsum board body in the later stage.

[0021] Furthermore, a connecting plate is fixedly connected to one side of the lifting plate, a spring is fixedly connected to the bottom of the connecting plate, the bottom end of the spring is fixedly connected to a limiting frame, the top end of the limiting frame passes through the spring and extends to the top of the connecting plate, the bottom of the limiting frame is fixedly connected to a movable frame, and a movable roller is movably provided on the outer side of the movable frame.

[0022] Through the above technical solution, by providing movable rollers, the phenomenon of warping of the paper-faced gypsum board body when being pushed can be avoided, and the stability of the paper-faced gypsum board body when being pushed can be improved.

[0023] Further, the following steps are included:

[0024] S1: When in use, first place the gypsum board body inside the loading box in sequence, then turn the knob according to the thickness of the gypsum board body to make the screw rotate, because the lifting plate fits against one side of the loading box, the height of the lifting plate can be adjusted to facilitate the discharge of the gypsum board body, then start the motor three, and drive one of the rotating shafts to rotate through the output shaft of the motor three, one of the rotating shafts can move the two push plates by matching with the conveyor belt and the other rotating shaft, here the distance between the two push plates is greater than the length of the gypsum board body, and as the two push plates move, the gypsum board body at the bottom of the loading box will be forced to move to the right;

[0025] S2: After the gypsum board is pushed out of the loading box, it passes the bottom of the movable roller. When the lower spring is stressed and deformed, it is in a compressed state. The movable roller rolls on the top of the gypsum board. At this time, the restoring force of the spring will exert a downward force on the gypsum board to prevent the gypsum board from warping when being pushed, thereby improving the stability of the gypsum board when being pushed.

[0026] S3: When the gypsum board body is located at the bottom of the U-shaped frame, start the second motor. Here, the second motor rotates forward for a certain period of time and then rotates in the reverse direction. This is a known technology and will not be described in detail here. The output shaft of the second motor drives the worm to rotate. The worm engages with the worm wheel to rotate the second roller. The second roller drives the spray head to swing back and forth through the swing frame to spray the surface of the gypsum board body. When the spraying operation is completed, the second motor can be turned off. At this time, the spray head is in a vertical state.

[0027] S4: Then start the four electric push rods, so that the telescopic ends of the four electric push rods are in a stretched state. When the two fan blades are close to the paper-faced gypsum board body, start motor 1, and drive the front reciprocating screw to rotate through the output shaft of motor 1. The front reciprocating screw cooperates with sprocket 1, sprocket 2 and the chain to make the rear reciprocating screw rotate together. Since the two guide blocks are matched with the two sliders respectively, they can limit the two sliders, so that the two sliders can be more stable when moving back and forth. When the two sliders move, the two rollers 1 will be driven to move. Since the two gears are matched with the two racks respectively, the two rollers 1 can be moved and rotated at the same time. Through the above structure, the two fan blades can be moved back and forth and rotated at the same time, so as to speed up the drying speed of the spray material on the surface of the paper-faced gypsum board body, so that the work efficiency can be maximized.

[0028] In summary, this application has the following beneficial technical effects:

[0029] This invention can start four electric push rods. When the two fan blades are close to the paper-faced gypsum board body, the two sliders can drive the two rollers to move back and forth. Because the two gears are matched with the two racks respectively, the two rollers can move and rotate at the same time. Through the above structure, the two fan blades can move back and forth and rotate at the same time, thereby accelerating the drying speed of the sprayed material on the surface of the paper-faced gypsum board body and maximizing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of this application;

[0031] Figure 2 For this application Figure 1 A magnified view of the structure at center A;

[0032] Figure 3 A partially cutaway perspective view of the present application;

[0033] Figure 4 A partial perspective view of this application;

[0034] Figure 5 This is a partial perspective view from below of the present application;

[0035] Figure 6 For this application Figure 4 Enlarged view of the structure at point B in the middle.

[0036] Description of the numbers in the figure:

[0037] 1. Workbench; 2. U-shaped frame; 3. Electric push rod; 4. Connecting frame; 5. Rack; 6. Gear; 7. Roller 1; 8. Fan blade; 9. Slider; 10. Reciprocating screw; 11. Spray head; 12. Hose; 13. Guide plate; 14. Motor 1; 15. Sprocket 1; 16. Sprocket 2; 17. Chain; 18. Motor 2; 19. Worm; 20. Worm gear; 21. Roller 2; 22. Swing frame; 23. Loading box; 24. Gypsum board body; 25. Rotating shaft; 26. Roller; 27. Conveyor belt; 28. Push plate; 29. Motor 3; 30. Lifting plate; 31. Screw; 32. Horizontal plate; 33. Connecting plate; 34. Spring; 35. Limit frame; 36. Movable frame; 37. Movable roller. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] Example:

[0042] The present application discloses a surface spraying device and a spraying method for a gypsum board. Figures 1 to 6 , including a workbench 1, an auxiliary mechanism is provided inside the workbench 1, the auxiliary mechanism extends to the outside of the workbench 1, and the auxiliary mechanism includes a feeding component, an adjusting component and a driving component;

[0043] The auxiliary mechanism includes a U-shaped frame 2, which is fixedly connected to the top of the workbench 1. Four electric push rods 3 are fixedly connected to the inner wall of the top of the U-shaped frame 2. The bottom ends of the four electric push rods 3 are fixedly connected to two connecting frames 4. A movable groove is opened at the bottom of the two connecting frames 4. Racks 5 are fixedly embedded in the two movable grooves. Gears 6 are meshed inside the two racks 5. Rollers 7 are fixedly embedded in the two gears 6. Fan blades 8 are fixedly connected to the bottom ends of the two rollers 7. Slide blocks 9 are sleeved on the outer sides of the tops of the two rollers 7. Reciprocating screws 10 are embedded in the two connecting frames 4. The two reciprocating screws 10 are respectively embedded in the two sliders 9. The two reciprocating screws 10 and the two sliders 9 are connected by ball nut pairs. A spray head 11 is provided between the two connecting frames 4.

[0044] See also Figure 4 and Figure 6 , a connecting component is provided on the outside of the spray head 11, and the connecting component includes a through groove, which is opened at the top of the U-shaped frame 2. A hose 12 is fixedly connected to the top of the spray head 11, and the top of the hose 12 passes through the through groove and extends to the top of the U-shaped frame 2. The two rollers 7 and the two sliders 9 are connected at the connection points through bearings. The two reciprocating screws 10 and the two connecting frames 4 are connected at the connection points through bearings. The tops of the two connecting frames 4 are fixedly connected with guide plates 13, and the tops of the two guide plates 13 extend to the inside of the two sliders 9 respectively;

[0045] See also Figure 3 and Figure 4 , the driving component includes a motor 14, which is fixedly connected to one side of the front connecting frame 4, and the output shaft of the motor 14 is fixedly connected to the front reciprocating screw 10, and the outer sides of one end of the two reciprocating screws 10 are respectively fixedly sleeved with a sprocket 15 and a sprocket 2 16, and a chain 17 is sleeved on the outer sides of the sprocket 15 and the sprocket 2 16. The sprocket 15 and the sprocket 2 16 are driven and connected by the chain 17, and a motor 2 18 is fixedly embedded in the through groove, and a worm 19 is fixedly connected to the output shaft of the motor 2 18. The front end of the worm 19 is rotatably connected to the U-shaped frame 2, and a worm wheel 20 is meshed with the bottom of the worm 19. A roller 21 is fixedly embedded in the worm wheel 20, and both ends of the roller 21 are rotatably connected to both sides of the U-shaped frame 2. A swing frame 22 is fixedly sleeved on the outer side of the roller 21, and the bottom end of the swing frame 22 is fixedly connected to the spray head 11, and the swing frame 22 is located on one side of the worm wheel 20;

[0046] See also Figure 1 and Figure 5 , the feeding component includes a feeding box 23, which is fixedly connected to the top of the workbench 1, and a plurality of paper-faced gypsum board bodies 24 are embedded in the feeding box 23. A plurality of rotating shafts 25 are movably embedded in the workbench 1, and rollers 26 are fixedly sleeved on the outside of the plurality of rotating shafts 25. Two of the rotating shafts 25 are sleeved on the outside of the conveyor belt 27, and push plates 28 are fixedly connected on both sides of the conveyor belt 27. The two push plates 28 are symmetrically arranged with the center line of the conveyor belt 27 as the axis. The front side of the feeding box 23 is fixedly connected to a fixed plate, and the front side of the fixed plate is fixedly connected to a motor three 29. The front end of one of the rotating shafts 25 extends to the inside of the fixed plate and is rotatably connected. The output shaft of the motor three 29 is fixedly connected to one of the rotating shafts 25;

[0047] See also Figure 1 and Figure 2 The adjusting component includes a lifting plate 30, which is located on one side of the loading box 23. The lifting plate 30 is fitted with one side of the loading box 23. A screw 31 is threadedly inserted into the inner side of the top of the lifting plate 30, and a cross plate 32 is movablely sleeved on the outer side of the top of the screw 31. The cross plate 32 is fixedly connected to the loading box 23, and a knob is fixedly connected to the top of the screw 31. One side of the lifting plate 30 is fixedly connected to the connecting plate 33, and the bottom of the connecting plate 33 is fixedly connected to a spring 34. The bottom end of the spring 34 is fixedly connected to a limiting frame 35. The top of the limiting frame 35 passes through the spring 34 and extends to the top of the connecting plate 33. The bottom of the limiting frame 35 is fixedly connected to a movable frame 36, and a movable roller 37 is movablely sleeved on the outer side of the movable frame 36.

[0048] The implementation principle of this embodiment is as follows: when in use, the gypsum board body 24 is first placed inside the loading box 23 in sequence, and then the knob is turned according to the thickness of the gypsum board body 24 to rotate the screw rod 31. Since the lifting plate 30 is in contact with one side of the loading box 23, the height of the lifting plate 30 can be adjusted to facilitate the discharge of the gypsum board body 24. Then, the motor 3 29 is started, and the output shaft of the motor 3 29 drives one of the rotating shafts 25 to rotate. One of the rotating shafts 25 is matched with the conveyor belt 27 and the other rotating shaft 25, so that the two push plates 28 can move. Here, the distance between the two push plates 28 is greater than the length of the gypsum board body 24. As the two push plates 28 move, the gypsum board body 24 at the bottom of the loading box 23 will be forced to move to the right;

[0049] After the gypsum board body 24 is pushed out of the loading box 23, the gypsum board body 24 will pass through the bottom of the movable roller 37. When the lower spring 34 is stressed and deformed, it is in a compressed state. The movable roller 37 rolls on the top of the gypsum board body 24. At this time, the restoring force of the spring 34 will exert a downward force on the gypsum board body 24 to prevent the gypsum board body 24 from warping when being pushed, thereby improving the stability of the gypsum board body 24 when being pushed;

[0050] When the gypsum board body 24 is located at the bottom of the U-shaped frame 2, the motor 2 18 is started. Here, the motor 2 18 rotates forward for a certain period of time and then rotates in the reverse direction. This can be set by programming. It is a well-known technology and will not be described in detail here. The worm 19 is driven by the output shaft of the motor 2 18 to rotate. The worm 19 is engaged with the worm gear 20 to rotate the roller 21. The roller 21 drives the spray head 11 to swing back and forth through the swing frame 22 to spray the surface of the gypsum board body 24. When the spraying operation is completed, the motor 2 18 can be turned off. At this time, the spray head 11 is in a vertical state;

[0051] Then the four electric push rods 3 are started, so that the telescopic ends of the four electric push rods 3 are in a stretched state. When the two fan blades 8 are close to the paper-faced gypsum board body 24, the motor 14 is started, and the front reciprocating screw rod 10 is driven to rotate by the output shaft of the motor 14. The front reciprocating screw rod 10 cooperates with the sprocket 15, the sprocket 2 16 and the chain 17 to make the rear reciprocating screw rod 10 rotate together. Because the two guide blocks are matched with the two sliders 9 respectively, the two sliders 9 can be limited, so that the two sliders 9 can be more stable when moving back and forth left and right. When the two sliders 9 move, the two rollers 7 will be driven to move. Because the two gears 6 are matched with the two racks 5 respectively, the two rollers 7 can be moved and rotated at the same time. Through the above structure, the two fan blades 8 can be reciprocated left and right and can be rotated at the same time, thereby accelerating the drying speed of the sprayed material on the surface of the paper-faced gypsum board body 24, so that the work efficiency can be maximized.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gypsum board surface spraying device, comprising a workbench (1), characterized in that: An auxiliary mechanism is provided inside the workbench (1), and the auxiliary mechanism extends to the outside of the workbench (1), and the auxiliary mechanism includes a loading component, an adjusting component, and a driving component; The auxiliary mechanism comprises a U-shaped frame (2), the U-shaped frame (2) is fixedly connected to the top of the workbench (1), the top inner wall of the U-shaped frame (2) is fixedly connected to four electric push rods (3), the bottom ends of the four electric push rods (3) are fixedly connected to two connecting frames (4), the bottoms of the two connecting frames (4) are each provided with a movable groove, the insides of the two movable grooves are each fixedly embedded with a rack (5), the insides of the two racks (5) are each meshed with a gear (6), and the insides of the two gears (6) are each fixedly embedded with a roller (7) ), the bottom ends of the two rollers (7) are fixedly connected with fan blades (8), the outer sides of the top ends of the two rollers (7) are sleeved with sliders (9), the interiors of the two connecting frames (4) are embedded with reciprocating screw rods (10), the two reciprocating screw rods (10) are respectively embedded in the interiors of the two sliders (9), the two reciprocating screw rods (10) and the two sliders (9) are connected by ball nut pairs, a spray head (11) is provided between the two connecting frames (4), and a connecting component is provided on the outer side of the spray head (11).

2. A gypsum board surface spraying device according to claim 1, characterized in that: The connecting component comprises a through slot, which is opened on the top of the U-shaped frame (2); a hose (12) is fixedly connected to the top of the spray head (11); the top end of the hose (12) passes through the through slot and extends to the top of the U-shaped frame (2).

3. The surface spraying device for gypsum board according to claim 1, characterized in that: The connection points between the two rollers (7) and the two sliders (9) are movably connected via bearings, and the connection points between the two reciprocating screws (10) and the two connecting frames (4) are movably connected via bearings. The tops of the two connecting frames (4) are fixedly connected with guide plates (13), and the tops of the two guide plates (13) extend into the interiors of the two sliders (9) respectively.

4. The surface spraying device for gypsum board according to claim 1, characterized in that: The driving component includes a motor 1 (14), the motor 1 (14) is fixedly connected to one side of the front connecting frame (4), and the output shaft of the motor 1 (14) is fixedly connected to the front reciprocating screw rod (10).

5. The surface spraying device for gypsum board according to claim 2, characterized in that: The outer sides of one end of the two reciprocating screw rods (10) are respectively fixedly sleeved with a sprocket wheel 1 (15) and a sprocket wheel 2 (16), and the outer sides of the sprocket wheel 1 (15) and the sprocket wheel 2 (16) are sleeved with a chain (17), and the sprocket wheel 1 (15) and the sprocket wheel 2 (16) are connected by the chain (17). The through groove is fixedly embedded with a motor 2 (18), and the output shaft of the motor 2 (18) is fixedly connected with a worm (19), and the worm (19) is connected to the motor 2 (18). ) is rotatably connected to the U-shaped frame (2), a worm wheel (20) is meshed at the bottom of the worm (19), a roller (21) is fixedly embedded inside the worm wheel (20), both ends of the roller (21) are rotatably connected to both sides of the U-shaped frame (2), a swing frame (22) is fixedly sleeved on the outside of the roller (21), the bottom end of the swing frame (22) is fixedly connected to the spray head (11), and the swing frame (22) is located on one side of the worm wheel (20).

6. The surface spraying device for gypsum board according to claim 1, characterized in that: The feeding component comprises a feeding box (23), the feeding box (23) is fixedly connected to the top of the workbench (1), a plurality of paper-faced gypsum board bodies (24) are embedded in the feeding box (23), a plurality of rotating shafts (25) are movably embedded in the workbench (1), the outer sides of the plurality of rotating shafts (25) are fixedly sleeved with rollers (26), two of the rotating shafts (25) are sleeved with conveyor belts (27), both sides of the conveyor belt (27) are fixedly connected with push plates (28), and the two push plates (28) are symmetrically arranged with the center line of the conveyor belt (27) as the axis.

7. The surface spraying device for gypsum board according to claim 6, characterized in that: The front side of the loading box (23) is fixedly connected to a fixed plate, and the front side of the fixed plate is fixedly connected to a motor three (29), the front end of one of the rotating shafts (25) extends into the interior of the fixed plate and is rotatably connected, and the output shaft of the motor three (29) is fixedly connected to one of the rotating shafts (25).

8. The surface spraying device for gypsum board according to claim 1, characterized in that: The adjusting component includes a lifting plate (30), the lifting plate (30) is located on one side of the loading box (23), the lifting plate (30) is in contact with one side of the loading box (23), a screw rod (31) is threadedly inserted into the inner side of the top of the lifting plate (30), a transverse plate (32) is movably sleeved on the outer side of the top of the screw rod (31), the transverse plate (32) is fixedly connected to the loading box (23), and a knob is fixedly connected to the top of the screw rod (31).

9. The surface spraying device for gypsum board according to claim 8, characterized in that: One side of the lifting plate (30) is fixedly connected to a connecting plate (33), the bottom of the connecting plate (33) is fixedly connected to a spring (34), the bottom end of the spring (34) is fixedly connected to a limiting frame (35), the top end of the limiting frame (35) passes through the spring (34) and extends to the top of the connecting plate (33), the bottom of the limiting frame (35) is fixedly connected to a movable frame (36), and the outer side of the movable frame (36) is movably sleeved with a movable roller (37).

10. A method for spraying a surface of a gypsum board using a spraying device, characterized in that: The following steps are involved: S1: When in use, first place the gypsum board body (24) in sequence inside the loading box (23), then turn the knob according to the thickness of the gypsum board body (24) to rotate the screw (31). Since the lifting plate (30) is in contact with one side of the loading box (23), the height of the lifting plate (30) can be adjusted to facilitate the discharge of the gypsum board body (24). Then, start the motor three (29), and drive one of the rotating shafts (25) to rotate through the output shaft of the motor three (29). One of the rotating shafts (25) can move two push plates (28) by matching with the conveyor belt (27) and the other rotating shaft (25). Here, the distance between the two push plates (28) is greater than the length of the gypsum board body (24). As the two push plates (28) move, the gypsum board body (24) at the bottom of the loading box (23) will be forced to move to the right; S2: After the gypsum board body (24) is pushed out of the loading box (23), the gypsum board body (24) will pass through the bottom of the movable roller (37). When the lower spring (34) is stressed and deformed, it is in a compressed state. The movable roller (37) rolls on the top of the gypsum board body (24). At this time, the restoring force of the spring (34) will exert a downward force on the gypsum board body (24) to avoid the gypsum board body (24) from warping when being pushed, thereby improving the stability of the gypsum board body (24) when being pushed; S3: When the gypsum board body (24) is located at the bottom of the U-shaped frame (2), the second motor (18) is started. Here, the second motor (18) rotates in the forward direction for a certain period of time and then rotates in the reverse direction (it can be set by programming, which is a known technology and will not be described in detail here). The output shaft of the second motor (18) drives the worm (19) to rotate. The worm (19) is engaged with the worm wheel (20), so that the second roller (21) rotates. The second roller (21) drives the spray head (11) to swing back and forth through the swing frame (22) to spray the surface of the gypsum board body (24). When the spraying operation is completed, the second motor (18) can be turned off. At this time, the spray head (11) is in a vertical state; S4: Then the four electric push rods (3) are started, so that the telescopic ends of the four electric push rods (3) are in a stretched state. When the two fan blades (8) are close to the paper-faced gypsum board body (24), the motor 1 (14) is started, and the output shaft of the motor 1 (14) drives the front reciprocating screw rod (10) to rotate. The front reciprocating screw rod (10) cooperates with the sprocket 1 (15), the sprocket 2 (16) and the chain (17), so that the rear reciprocating screw rod (10) can rotate together. Since the two guide blocks are matched with the two sliders (9), the two sliders ( 9) serves the purpose of limiting the position, thereby making the two sliders (9) more stable when moving back and forth. When the two sliders (9) move, they will drive the two rollers (7) to move. Because the two gears (6) are matched with the two racks (5) respectively, the two rollers (7) can move and rotate at the same time. Through the above structure, the two fan blades (8) can move back and forth and rotate at the same time, thereby accelerating the drying speed of the spray material on the surface of the paper-faced gypsum board body (24), so that the work efficiency can be maximized.

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