Surface spraying treatment equipment for signboard

Abstract

The invention relates to the technical field of paint spraying equipment, and particularly discloses surface spraying treatment equipment for signboards, which comprises a spraying box with sliding holes in two sides, and further comprises a paint box and a spraying mechanism which are arranged in the spraying box, the coating box is fixedly connected with the spraying box; the spraying mechanism comprises a spraying pipe, a wall block, a uniformizing block, a plurality of spraying assemblies arranged in the length direction of the spraying pipe at equal intervals, uniformizing holes formed in the spraying pipe and a power assembly used for driving the uniformizing block to reciprocate in the length direction of the wall block. The spraying pipe is communicated with the paint box; the wall block is fixedly connected with the inner wall of the spraying pipe; the uniformizing blocks are connected with the wall blocks in a sliding mode and can slide in and out of the uniformizing holes. The problem that an existing treatment device cannot guarantee that paint can be evenly distributed on a marking label is solved.

Description

Technical Field

[0001] This invention relates to the field of spray painting equipment technology, and more specifically to a surface spraying treatment device for signage. Background Technology

[0002] With current technology, sign production usually requires painting. However, if the paint is not dried after painting, it is easy for the paint to be scratched when the signs are stored, affecting product quality.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN221789830U discloses a signboard surface coating treatment device, comprising a frame, with a conveyor fixedly mounted in the middle of the frame. The device includes a sign conveying system with a spraying unit fixed to the top for spraying the sign surface and a drying unit fixed to the bottom for drying the paint. The drying unit comprises a heating plate and fan blades. The bottom of the heating plate is fixedly connected to the bottom of the inner wall of the frame, and a temperature controller is fixedly connected to the top of the heating plate. This system increases the internal temperature of the device through the heating plate and accelerates the airflow within the device through the fan blades, thus ensuring the paint on the sign surface dries quickly and preventing scratches after spraying, thereby avoiding any impact on the quality of the sign.

[0004] The above-mentioned device has the following problems in actual use: In the process of using the device, relying solely on the spraying of paint from the nozzle can easily cause paint blind spots or uneven paint distribution on the signs and labels. Due to the poor fluidity of the paint, the paint cannot be evenly distributed on the signs and labels or fill the paint blind spots by its own flow, which means that it cannot guarantee that the paint can be evenly distributed on the signs and labels. Summary of the Invention

[0005] This invention provides a surface spraying treatment device for signs and labels to solve the problem that existing treatment devices cannot guarantee that the paint can be evenly distributed on the signs and labels.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a surface spraying treatment device for signs and labels, comprising a spraying box with sliding holes on both sides, and further comprising a paint tank and a spraying mechanism disposed within the spraying box; the paint tank and the spraying box are fixedly connected; the spraying mechanism includes a spraying pipe, a wall block, a uniform block, a plurality of spraying components equidistantly arranged along the length direction of the spraying pipe, uniform holes opened on the spraying pipe, and a power component for driving the uniform block to reciprocate along the length direction of the wall block; the spraying pipe is connected to the paint tank; the wall block and the spraying pipe are connected internally. The wall is fixedly connected; the uniform block is slidably connected to the wall block, and the uniform block can slide in and out of the uniform hole; the spraying assembly includes a column, a disc, a fine nozzle, a coarse nozzle, a spray hole on the column, a side hole on the spray pipe, and a power unit for driving the intermittent rotation of the spray pipe; the column is rotatably connected to the side hole, and the column is connected to the spray pipe; the disc is fixedly connected to the outer wall of the spray pipe, and the disc is in contact with the column; both the fine nozzle and the coarse nozzle are connected to the disc; both the fine nozzle and the coarse nozzle are located on the movement trajectory of the spray hole, and both the fine nozzle and the coarse nozzle can be connected to the spray hole.

[0007] The principles and advantages of this scheme are: While the sign is being moved into the spray box along the sliding hole, the motor is started, and the output shaft of the motor drives the drive shaft to rotate.

[0008] The paint is sprayed in two alternating modes: a fine spray and a coarse spray. These two different spray patterns ensure the paint is applied more evenly and thoroughly to the sign, resulting in a more three-dimensional and layered effect. This enhances the overall effectiveness of the paint application, improving both the efficiency and quality of the sign painting process.

[0009] After the fine and coarse sprays are applied to the sign, the paint spreader continuously moves back and forth towards the sign's location. This allows the fine and coarse sprays to be evenly distributed, filling in any paint blind spots. This ensures the paint can be applied to any area of ​​the sign, guaranteeing the quality of the paint job.

[0010] Furthermore, the spraying assembly also includes a coating section; the coating section includes a movable block, a distribution pipe, a coarse screen plate, a side hole opened on the spraying pipe, and a drive unit for driving the movable block to reciprocate along the axial direction of the column; the movable block is slidably connected to the spraying pipe; the distribution pipe is fixedly connected to the movable block, the distribution pipe is slidably connected to the side hole, and the distribution pipe communicates with the spraying pipe; the coarse screen plate is fixedly connected to the distribution pipe.

[0011] The separate spray nozzles are designed to increase the number of paint spray points, allowing the liquid paint to be sprayed between adjacent nozzles and applied to the sign. This process further enriches the layering of the paint's effect on the sign, enabling the paint to more effectively treat the sign.

[0012] The design of the spray nozzles, which allow them to continuously move closer to or further away from the sign's location, is intended to mitigate the effects of the paint's own gravity, thereby expanding the area on which the paint acts on the sign. This allows the paint to be sprayed along a linear path, thus improving the paint's utilization rate.

[0013] The purpose of setting up the coarse screen is to divide the paint into several larger diameter paint streams, thereby enabling the paint to be sprayed in separate streams, which further expands the effective range of the paint.

[0014] Furthermore, the coating section also includes a linkage unit; the linkage unit includes a linkage tube, a fine screen plate, a recessed block, a linkage block, a first spring, a linkage hole on the coating tube, a through hole on the spray tube, and a linkage component for driving the linkage block to reciprocate along the length of the recessed block; the linkage tube is connected to the spray tube, the linkage tube is in contact with the linkage hole, the linkage tube is slidably connected to the inner wall of the coating tube, and the linkage tube can slide in and out of the through hole; the fine screen plate is fixedly connected to the linkage tube; the recessed block is fixedly connected to the inner wall of the spray tube; the linkage block is slidably connected to the recessed block, and the linkage block abuts against the linkage tube; the two ends of the first spring are respectively connected to the inner walls of the linkage tube and the coating tube.

[0015] The linkage pipe and fine mesh plate are designed to further divert the paint flow, allowing it to be sprayed from different points in several smaller diameter streams onto the sign, thus enhancing the layering of the paint's effect on the sign. This enables the paint to be applied to the sign in a comprehensive and three-dimensional manner in multiple ways.

[0016] The linkage tube can slide into the branch tube, which first allows the paint to be applied directly to the sign in liquid form through the through hole, thus enriching the paint spraying pattern; then, the overlap of the fine screen and the coarse screen makes the paint distribution pattern more dense and three-dimensional, thereby promoting a better paint distribution effect.

[0017] Through the above process, the paint can be used to completely and three-dimensionally spray the signs in various forms, thus comprehensively enhancing the efficiency and quality of the paint spraying on the signs.

[0018] Furthermore, the coating section also includes an auxiliary unit; the auxiliary unit includes a piston cylinder, a piston block, an inlet pipe, and a hose; the piston cylinder is fixedly connected to the inner wall of the spray pipe; the piston block is slidably connected to the piston cylinder, and the piston block is fixedly connected to the movable block; both ends of the inlet pipe and the hose are respectively connected to the piston cylinder and the coating pipe.

[0019] By using the piston cylinder, the flow rate of paint into the manifold can be increased, thereby ensuring the diversion effect of paint flow through the manifold, which enables the paint to be sprayed and diverted efficiently.

[0020] Furthermore, it also includes a drying assembly; the drying assembly includes a hot air component, an air duct, a control block, an air guide hole on the air duct, and a moving part for driving the control block to reciprocate along the width direction of the air guide hole; the hot air component is fixedly connected to the paint box; the air duct is fixedly connected to the spray pipe, and the air duct is connected to the air outlet of the hot air component; the control block is slidably connected to the inner wall of the air duct, and the air guide hole is located on the movement trajectory of the control block.

[0021] The purpose of the air duct is to dry the areas where the uniform coating has been applied, thereby accelerating the drying speed of the paint and reducing interference caused by the paint's own flow, thus ensuring the quality of the sign painting.

[0022] During the reciprocating motion of the control block, the flow rate and pressure of the hot air can be controlled, thereby enabling the hot air to efficiently and thoroughly dry the signboard in different forms, thus enhancing the drying effect of the hot air.

[0023] Furthermore, the drying assembly also includes several air-driving sections equidistantly arranged along the length of the air duct; each air-driving section includes a rotating shaft, air-driving blades, and a moving part for driving the rotating shaft to rotate; the rotating shaft is rotatably connected to the air duct; the air-driving blades are fixedly connected to the rotating shaft and face the air-driving holes.

[0024] By rotating the fan blades, the speed at which hot air acts on the sign can be accelerated, thereby enabling the hot air to dry the sign more efficiently and improving the drying efficiency of the sign.

[0025] Furthermore, it also includes a drive shaft and a drive component for rotating the drive shaft; the drive shaft is rotatably connected to the spray box; the power unit includes a power shaft, a first gear, and an incomplete ring rack; the power shaft is rotatably connected to the spray pipe and fixedly connected to the column cylinder; the first gear is fixedly connected to the power shaft; the incomplete ring rack is fixedly connected to the drive shaft; the first gear meshes with the incomplete ring rack.

[0026] During the intermittent rotation of the incomplete annular rack, the incomplete annular rack can intermittently drive the first gear to rotate. During the rotation of the first gear, the cylinder is driven to rotate synchronously through the power shaft, that is, the cylinder can rotate intermittently.

[0027] Furthermore, the drive unit includes a side shaft, a first cam, a second spring, and an auxiliary component for driving the side shaft to rotate; the side shaft is rotatably connected to the spray box; the first cam is rotatably connected to the side shaft and abuts against the movable block; the two ends of the second spring are respectively connected to the movable block and the outer wall of the spray tube.

[0028] During the rotation of the side shaft, the first cam rotates synchronously. During the rotation of the first cam, when the protrusion of the first cam abuts against the movable block, the movable block moves away from the side shaft, and the second spring is compressed; when the protrusion of the first cam no longer abuts against the movable block, the piston block returns to its original position under the action of the second spring, and the movable block moves closer to the side shaft.

[0029] Furthermore, the linkage components include a linkage shaft, a second cam, a third spring, and a belt; the linkage shaft is rotatably connected to the spray pipe; the second cam is fixedly connected to the linkage shaft and abuts against the linkage block; the two ends of the third spring are respectively connected to the linkage block and the concave block; the two ends of the belt are respectively sleeved on the power shaft and the linkage shaft.

[0030] During the rotation of the power shaft, the linkage shaft moves synchronously via a belt. During the movement of the linkage shaft, the second cam rotates synchronously. During the rotation of the second cam, when the protruding part of the second cam abuts against the linkage block, the linkage block moves towards the position of the linkage tube, and the third spring is compressed; when the protruding part of the second cam no longer abuts against the linkage block, the linkage block resets under the action of the third spring, and the linkage block moves away from the position of the linkage tube.

[0031] Furthermore, the auxiliary components include a first bevel gear and a second bevel gear; the first bevel gear is fixedly connected to the drive shaft; the second bevel gear is fixedly connected to the side shaft; and the first bevel gear meshes with the second bevel gear.

[0032] During the rotation of the first bevel gear, the first bevel gear meshes with the second bevel gear, which in turn drives the side shaft to rotate. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of an embodiment of a surface spraying treatment device for signage according to the present invention.

[0034] Figure 2 for Figure 1 A schematic diagram of the internal structure of the spray coating box.

[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0036] Figure 4 for Figure 2 A schematic diagram of the partial structure viewed from the left.

[0037] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0038] Figure 6 for Figure 2 A schematic diagram of the internal structure of the spray nozzle.

[0039] Figure 7 for Figure 6 Enlarged view of point C in the middle.

[0040] Figure 8 for Figure 6 A partial structural diagram in the rear view direction.

[0041] Figure 9 for Figure 8 Enlarged view of point D in the middle. Detailed Implementation

[0042] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings of the instruction manual include: spray box 1, paint box 2, spray pipe 3, uniform block 4, column cylinder 5, disc 6, fine nozzle 7, coarse nozzle 8, movable block 9, branch pipe 10, coarse screen plate 11, linkage pipe 12, fine screen plate 13, concave block 14, linkage block 15, piston cylinder 16, piston block 17, hot air heater 18, air guide pipe 19, control block 20, rotating shaft 21, fan blade 22, drive shaft 23, power shaft 24, first gear 25, incomplete ring rack 26, side shaft 27, first cam 28, second spring 29, linkage shaft 30, second cam 31, belt 32, first bevel gear 33, second bevel gear 34, drive block 35, second gear 36, third gear 37, wall block 38, second rack 39, elliptical disc 40, fourth spring 41, worm gear 42, motor 43, sliding hole 44, uniform hole 45.

[0043] The basic implementation examples are as follows: Figure 1 , 2 As shown in numbers 3, 4, 5, 6, 7, 8, and 9: This invention provides a surface coating treatment device for signs and labels, including a spray box 1 with sliding holes 44 on both sides, a paint tank 2 disposed inside the spray box 1, and a spraying mechanism; the paint tank 2 is fixedly connected to the spray box 1 and stores paint in the paint tank 2; the spraying mechanism includes a spray pipe 3, a wall block 38, a uniform block 4, a plurality of spraying components equidistantly arranged along the length direction of the spray pipe 3, uniform holes 45 opened on the spray pipe 3, and a power component for driving the uniform block 4 to reciprocate along the length direction of the wall block 38; the spray pipe 3 is connected to the paint tank 2; the wall block 38 is fixedly connected to the inner wall of the spray pipe 3; the uniform block 4 is slidably connected to the wall block 38. The uniform block 4 is located inside the uniform hole 45, and the uniform block 4 can slide in and out of the uniform hole 45; the spraying assembly includes a column cylinder 5, a disc 6, a fine nozzle 7, a coarse nozzle 8, a spray hole on the column cylinder 5, a side hole on the spraying pipe 3, and a power unit for driving the spraying pipe to rotate intermittently; the column cylinder 5 is rotatably connected to the side hole, and the column cylinder 5 communicates with the spraying pipe 3; the disc 6 is fixed to the outer wall of the spraying pipe 3, and the disc 6 is in contact with the column cylinder 5; the disc 6 has two symmetrically arranged mounting holes, and the fine nozzle 7 and the coarse nozzle 8 are respectively connected to the two mounting holes; the fine nozzle 7 and the coarse nozzle 8 are both located on the movement trajectory of the spray hole, and the fine nozzle 7 and the coarse nozzle 8 can respectively communicate with the spray hole.

[0044] The spraying assembly also includes a coating section; the coating section includes a movable block 9, a branch pipe 10, a coarse screen plate 11, a side hole on the spraying pipe 3, and a drive unit for driving the movable block 9 to reciprocate along the axial direction of the column cylinder 5; the movable block 9 is slidably connected to the spraying pipe 3; the branch pipe 10 is fixedly connected to the movable block 9, the branch pipe 10 is slidably connected to the side hole, and the branch pipe 10 communicates with the spraying pipe 3; the coarse screen plate 11 is fixedly connected to the branch pipe 10.

[0045] The coating section also includes a linkage unit; the linkage unit includes a linkage tube 12, a fine screen plate 13, a recessed block 14, a linkage block 15, a first spring, a linkage hole on the branch tube 10, a through hole on the spray tube 3, and a linkage component for driving the linkage block 15 to reciprocate along the length of the recessed block 14; the linkage tube 12 is connected to the spray tube 3, the linkage tube 12 is in contact with the linkage hole, the linkage tube 12 is slidably connected to the inner wall of the branch tube 10, and the linkage tube 12 can slide in and out of the through hole; the fine screen plate 13 is fixedly connected to the linkage tube 12; the recessed block 14 is fixedly connected to the inner wall of the spray tube 3; the linkage block 15 is slidably connected to the recessed block 14, and the linkage block 15 abuts against the linkage tube 12; the two ends of the first spring are respectively connected to the inner wall of the linkage tube 12 and the branch tube 10.

[0046] The coating section also includes an auxiliary unit; the auxiliary unit includes a piston cylinder 16, a piston block 17, an inlet pipe, and a hose; the piston cylinder 16 is fixedly connected to the inner wall of the spray pipe 3; the piston block 17 is slidably connected to the piston cylinder 16, and the piston block 17 is fixedly connected to the movable block 9; both ends of the inlet pipe and the hose are respectively connected to the piston cylinder 16 and the branch pipe 10; a first one-way valve is installed on the inlet pipe for paint to flow unidirectionally from the inlet pipe to the piston cylinder 16; a second one-way valve is installed on the hose for paint to flow unidirectionally from the piston cylinder 16 to the hose, and the length of the hose is suitable for the reciprocating motion of the branch pipe 10.

[0047] It also includes a drying assembly; the drying assembly includes a hot air component, an air duct 19, a control block 20, an air guide hole on the air duct 19, and a moving part for driving the control block 20 to reciprocate along the width direction of the air guide hole; the hot air component is a hot air blower 18, which is fixedly connected to the paint box 2; the air duct 19 is fixedly connected to the spray pipe 3, and the air duct 19 is connected to the air outlet of the hot air blower 18; the control block 20 is slidably connected to the inner wall of the air duct 19, the control block 20 is in contact with the inner wall of the air duct 19, and the air guide hole is located on the movement trajectory of the control block 20.

[0048] The drying assembly also includes several air-driving sections equidistantly arranged along the length of the air duct 19; each air-driving section includes a rotating shaft 21, an air-driving blade 22, and a moving part for driving the rotating shaft 21 to rotate; the rotating shaft 21 is rotatably connected to the air duct 19; the air-driving blade 22 is located inside the air duct 19, the air-driving blade 22 is fixedly connected to the rotating shaft 21, and the air-driving blade 22 faces the air-driving hole.

[0049] It also includes a drive shaft 23 and a drive component for rotating the drive shaft 23; the drive shaft 23 is rotatably connected to the spray box 1; the power unit includes a power shaft 24, a first gear 25, and an incomplete ring rack 26; the power shaft 24 is rotatably connected to the spray pipe 3 and fixedly connected to the column cylinder 5; the first gear 25 is fixedly connected to the power shaft 24; the incomplete ring rack 26 is fixedly connected to the drive shaft 23; the first gear 25 meshes with the incomplete ring rack 26.

[0050] The drive unit includes a side shaft 27, a first cam 28, a second spring 29, and an auxiliary component for driving the side shaft 27 to rotate. The side shaft 27 is rotatably connected to the spray box 1. The first cam 28 is rotatably connected to the side shaft 27 and abuts against the movable block 9. The second spring 29 is sleeved on the movable block 9, and the two ends of the second spring 29 are respectively connected to the movable block 9 and the outer wall of the spray pipe 3.

[0051] The linkage components include a linkage shaft 30, a second cam 31, a third spring, and a belt 32; the linkage shaft 30 is rotatably connected to the spray pipe 3; the second cam 31 is fixedly connected to the linkage shaft 30 and abuts against the linkage block 15; the third spring is located inside the recess 14, and the two ends of the third spring are respectively connected to the linkage block 15 and the recess 14; the two ends of the belt 32 are respectively sleeved on the power shaft 24 and the linkage shaft 30.

[0052] The auxiliary components include a first bevel gear 33 and a second bevel gear 34; the first bevel gear 33 is fixedly connected to the drive shaft 23; the second bevel gear 34 is fixedly connected to the side shaft 27; the first bevel gear 33 and the second bevel gear 34 mesh.

[0053] The power assembly includes several drive units equidistantly arranged along the length of the spray pipe 3; each drive unit includes a drive block 35, a side shaft, a second gear 36, a third gear 37, a first rack, a second rack 39, and a side groove on the drive block 35; the drive block 35 is slidably connected to the spray pipe 3 and the air duct 19 respectively, and the drive block 35 is fixedly connected to the control block 20; the side shaft is fixedly connected to the inner wall of the spray pipe 3; the second gear 36 and the third gear 37 are both fixedly connected to the side shaft; the first rack is fixedly connected to the side groove; the second rack 39 is slidably connected to the inner wall of the spray pipe 3, and the second rack 39 is fixedly connected to the uniform block 4; the first rack meshes with the second gear 36; the second rack 39 meshes with the third gear 37.

[0054] The motion unit includes several motion units equidistantly arranged along the length of the spray pipe 3; the motion unit includes an elliptical disk 40 and a fourth spring 41; the elliptical disk 40 is fixedly connected to the power shaft 24 and abuts against the drive block 35; the fourth spring 41 is sleeved on the movable block 9, and the two ends of the fourth spring 41 are fixedly connected to the inner walls of the movable block 9 and the air guide pipe 19, respectively.

[0055] The side shaft 27 is a screw; the moving part is a worm gear 42; the worm gear 42 is fixedly connected to the drive shaft 23, and the worm gear 42 meshes with the worm.

[0056] The driving component is a motor 43; the motor 43 is fixedly connected to the paint box 2; the output shaft of the motor 43 is fixedly connected to the drive shaft 23.

[0057] Specific implementation process: While the sign is being moved into the spray box 1 along the sliding hole 44, the motor 43 is started, and the output shaft of the motor 43 drives the drive shaft 23 to rotate. During the rotation of the drive shaft 23, the incomplete ring rack 26 rotates synchronously. During the intermittent rotation of the incomplete ring rack 26, the incomplete ring rack 26 can intermittently drive the first gear 25 to rotate. During the rotation of the first gear 25, the column cylinder 5 is driven to rotate synchronously through the power shaft 24, that is, the column cylinder 5 can rotate intermittently.

[0058] During the intermittent rotation of the column cylinder 5, the spray nozzles can intermittently communicate with the fine nozzle 7 and the coarse nozzle 8. This allows the paint introduced into the spray pipe 3 to be sprayed out as fine and coarse sprays alternate between the fine nozzle 7 and the coarse nozzle. These two different spray patterns ensure that the paint is applied more evenly and fully to the sign, resulting in a more three-dimensional and layered distribution of the paint on the sign. This makes the paint's effect more significant, thus improving the efficiency and quality of sign painting.

[0059] During the rotation of the power shaft 24, the elliptical disk 40 rotates synchronously. During the rotation of the elliptical disk 40, when the major axis end of the elliptical disk 40 abuts against the drive block 35, the drive block 35 moves towards the position of the air duct 19, and the fourth spring 41 is compressed; when the minor axis end of the elliptical disk 40 abuts against the drive block 35, the drive block 35 resets under the action of the fourth spring 41, and moves away from the position of the air duct 19. During the movement of the drive block 35, the first rack moves synchronously. During the movement of the first rack, the first rack drives the side shaft to rotate through the first gear 25. During the rotation of the side shaft, the second gear 36 rotates synchronously. During the rotation of the second gear 36, the second rack 39 can drive the uniform block 4 to slide in and out of the uniform hole 45.

[0060] Therefore, after the fine and coarse sprays are applied to the sign, the equalizing block 4 continuously reciprocates towards the sign's location. This allows the fine and coarse sprays to be evenly distributed under the action of the equalizing block 4, filling in any paint blind spots. This ensures the paint can be applied to any location on the sign, guaranteeing the quality of the paint application.

[0061] During the rotation of the drive shaft 23, the meshing of the first bevel gear 33 and the second bevel gear 34 drives the worm gear to rotate. During the rotation of the worm gear, the first cam 28 rotates synchronously. During the rotation of the first cam 28, when the protrusion of the first cam 28 abuts against the movable block 9, the movable block 9 moves away from the side shaft 27, and the second spring 29 is compressed; when the protrusion of the first cam 28 no longer abuts against the movable block 9, the piston block 17 resets under the action of the second spring 29, and the movable block 9 moves closer to the side shaft 27. During the movement of the movable block 9, the branch pipe 10 moves synchronously.

[0062] The purpose of the branch pipe 10 is to increase the number of paint spraying points, thereby enabling the liquid paint to be sprayed between two adjacent column cylinders 5 and applied to the sign. Through the above process, the layering of the paint's effect on the sign is further enriched, thus enabling the paint to more effectively treat the sign.

[0063] The purpose of the branch pipe 10 being able to continuously move closer to or further away from the location of the sign is to mitigate the impact of the paint's own gravity, thereby expanding the range of the paint's action on the sign and enabling the paint to be sprayed along the line, thus improving the utilization rate of the paint.

[0064] The purpose of setting the coarse screen plate 11 is to divide the paint into several paint streams with larger diameters, thereby enabling the paint to be sprayed in separate streams, which further expands the effective range of the paint.

[0065] During the rotation of the power shaft 24, the linkage shaft 30 moves synchronously via the belt 32. During the movement of the linkage shaft 30, the second cam 31 rotates synchronously. During the rotation of the second cam 31, when the protruding shaft of the second cam 31 abuts against the linkage block 15, the linkage block 15 moves towards the position of the linkage tube 12, and the third spring is compressed; when the protruding part of the second cam 31 no longer abuts against the linkage block 15, the linkage block 15 returns to its original position under the action of the third spring, and the linkage block 15 moves away from the position of the linkage tube 12. During the movement of the linkage block 15, the linkage tube 12 can slide in and out of the branch tube 10 under the combined action of the first spring and the linkage block 15.

[0066] The linkage pipe 12 and the fine mesh plate 13 are designed to further divert the paint, allowing it to be sprayed from different points in several smaller diameter streams onto the sign, thus enhancing the layering of the paint's effect on the sign. This enables the paint to be applied to the sign in a comprehensive and three-dimensional manner.

[0067] The linkage pipe 12 can slide into the branch pipe 10, which first allows the paint to be applied directly to the sign in liquid form through the through hole, thus enriching the paint spraying pattern; then, the fine screen plate 13 and the coarse screen plate 11 overlap, making the paint distribution pattern more dense and three-dimensional, thereby promoting a better paint distribution effect.

[0068] Through the above process, the paint can be used to completely and three-dimensionally spray the signs in various forms, thus comprehensively enhancing the efficiency and quality of the paint spraying on the signs.

[0069] During the movement of movable block 9, piston block 17 moves synchronously. During the movement of piston block 17, piston cylinder 16 can draw paint from spray pipe 3 into inlet pipe 10. Therefore, under the action of piston cylinder 16, the flow rate of paint into inlet pipe 10 can be increased, thereby ensuring the diversion effect of paint flow through inlet pipe 10, that is, enabling paint to be sprayed and diverted efficiently.

[0070] The purpose of the air duct 19 is to dry the area where the uniform block 4 has been applied, thereby accelerating the drying speed of the paint and reducing the interference caused by the paint's own flow, thus ensuring the painting quality of the sign.

[0071] During the movement of the drive block 35, the control block 20 moves synchronously. Therefore, during the reciprocating motion of the control block 20, the flow rate and pressure of the hot air can be controlled, thereby enabling the hot air to efficiently and thoroughly dry the signboard in different forms, thus enhancing the drying effect of the hot air.

[0072] During the rotation of the worm gear, the worm gear drives the rotating shaft 21 to rotate via the worm wheel 42. During the rotation of the rotating shaft 21, the fan blades 22 rotate synchronously. By rotating the fan blades 22, the speed at which hot air acts on the nameplate can be accelerated, thereby enabling the hot air to perform more efficient drying treatment on the nameplate, thus improving the drying efficiency of the hot air on the nameplate.

[0073] In summary, by applying paint in various forms to the signs, the layering and three-dimensionality of the paint finish are comprehensively enriched, thus ensuring painting efficiency. Furthermore, the use of hot air at multiple flow rates for drying further improves the quality of the paint application.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A surface coating treatment device for signs and nameplates, comprising a coating box with sliding holes on both sides, characterized in that: It also includes a paint tank and a spraying mechanism installed inside the spraying box; the paint tank is fixedly connected to the spraying box; the spraying mechanism includes a spraying pipe, a wall block, a uniform block, several spraying components equidistantly arranged along the length of the spraying pipe, uniform holes opened on the spraying pipe, and a power component for driving the uniform block to reciprocate along the length of the wall block; the spraying pipe is connected to the paint tank; the wall block is fixedly connected to the inner wall of the spraying pipe; the uniform block is slidably connected to the wall block, and the uniform block can slide in and out of the uniform holes; the spraying components include a column, a disc, a fine nozzle, a coarse nozzle, spray holes opened on the column, side holes opened on the spraying pipe, and a power unit for driving the spraying pipe to rotate intermittently; the column is rotatably connected to the side holes, and the column is connected to the spraying pipe; the disc is fixedly connected to the outer wall of the spraying pipe, and the disc is in contact with the column; both the fine nozzle and the coarse nozzle are connected to the disc; both the fine nozzle and the coarse nozzle are located on the movement trajectory of the spray holes, and both the fine nozzle and the coarse nozzle can communicate with the spray holes.

2. The surface spraying treatment equipment for signs and nameplates according to claim 1, characterized in that: The spraying assembly also includes a coating section; the coating section includes a movable block, a distribution pipe, a coarse screen, a side hole on the spraying pipe, and a drive unit for driving the movable block to reciprocate along the axial direction of the column; the movable block is slidably connected to the spraying pipe; the distribution pipe is fixedly connected to the movable block, the distribution pipe is slidably connected to the side hole, and the distribution pipe communicates with the spraying pipe; the coarse screen is fixedly connected to the distribution pipe.

3. The surface spraying treatment equipment for signs and labels according to claim 2, characterized in that: The coating section also includes a linkage unit; the linkage unit includes a linkage tube, a fine screen plate, a recessed block, a linkage block, a first spring, a linkage hole on the coating tube, a through hole on the spray tube, and a linkage component for driving the linkage block to reciprocate along the length of the recessed block; the linkage tube is connected to the spray tube, the linkage tube is in contact with the linkage hole, the linkage tube is slidably connected to the inner wall of the coating tube, and the linkage tube can slide in and out of the through hole; the fine screen plate is fixedly connected to the linkage tube; the recessed block is fixedly connected to the inner wall of the spray tube; the linkage block is slidably connected to the recessed block, and the linkage block abuts against the linkage tube; the two ends of the first spring are respectively connected to the inner walls of the linkage tube and the coating tube.

4. The surface spraying treatment equipment for signs and labels according to claim 3, characterized in that: The coating section also includes an auxiliary unit; the auxiliary unit includes a piston cylinder, a piston block, an inlet pipe, and a hose; the piston cylinder is fixedly connected to the inner wall of the spray pipe; the piston block is slidably connected to the piston cylinder, and the piston block is fixedly connected to the movable block; both ends of the inlet pipe and the hose are respectively connected to the piston cylinder and the coating section.

5. The surface spraying treatment equipment for signs and nameplates according to claim 1, characterized in that: It also includes a drying assembly; the drying assembly includes a hot air component, an air duct, a control block, an air guide hole on the air duct, and a moving part for driving the control block to reciprocate along the width of the air guide hole; the hot air component is fixedly connected to the paint box; the air duct is fixedly connected to the spray pipe, and the air duct is connected to the air outlet of the hot air component; the control block is slidably connected to the inner wall of the air duct, and the air guide hole is located on the movement trajectory of the control block.

6. The surface spraying treatment equipment for signs and nameplates according to claim 5, characterized in that: The drying assembly also includes several air-driving sections equidistantly arranged along the length of the air duct; each air-driving section includes a rotating shaft, air-driving blades, and a moving part for driving the rotating shaft to rotate; the rotating shaft is rotatably connected to the air duct; the air-driving blades are fixedly connected to the rotating shaft and face the air-driving holes.

7. The surface spraying treatment equipment for signs and nameplates according to claim 6, characterized in that: It also includes a drive shaft and a drive component for rotating the drive shaft; the drive shaft is rotatably connected to the spray box; the power unit includes a power shaft, a first gear, and an incomplete ring rack; the power shaft is rotatably connected to the spray pipe and fixedly connected to the column cylinder; the first gear is fixedly connected to the power shaft; the incomplete ring rack is fixedly connected to the drive shaft; the first gear meshes with the incomplete ring rack.

8. The surface spraying treatment equipment for signs and nameplates according to claim 7, characterized in that: The drive unit includes a side shaft, a first cam, a second spring, and an auxiliary component for driving the side shaft to rotate; the side shaft is rotatably connected to the spray box; the first cam is rotatably connected to the side shaft and abuts against the movable block; the two ends of the second spring are respectively connected to the movable block and the outer wall of the spray tube.

9. The surface spraying treatment equipment for signs and nameplates according to claim 8, characterized in that: The linkage components include a linkage shaft, a second cam, a third spring, and a belt; the linkage shaft is rotatably connected to the spray pipe; the second cam is fixedly connected to the linkage shaft and abuts against the linkage block; the two ends of the third spring are respectively connected to the linkage block and the concave block; the two ends of the belt are respectively sleeved on the power shaft and the linkage shaft.

10. A surface spraying treatment device for signage according to claim 9, characterized in that: The auxiliary components include a first bevel gear and a second bevel gear; the first bevel gear is fixedly connected to the drive shaft; the second bevel gear is fixedly connected to the side shaft; the first bevel gear and the second bevel gear mesh.

Images