Surface spraying device for advertising cloth processing

Abstract

The invention relates to the technical field of spraying equipment, and discloses a surface spraying device for advertising cloth processing, which comprises a rack, a connecting shell is slidably connected to an inner cavity of the rack, a smoothing plate is rotatably connected to an inner cavity of the connecting shell, a connecting shell is fixedly connected to the surface of the smoothing plate, and a smoothing head is slidably connected to an inner cavity of the connecting shell. A first reset spring is arranged on the face, opposite to the smoothing head, of the connecting shell, the top of the smoothing head is fixedly connected with an adjusting assembly, the adjusting assembly comprises two extrusion blocks, the two extrusion blocks are fixedly connected to the top of the smoothing head, are in a stair shape and are symmetrically designed, and an inner cavity of the connecting shell is rotationally connected with a rotary knob. One end of the rotary knob is fixedly connected with two extrusion columns, the surfaces of the two extrusion blocks are subjected to rounding treatment, the bottoms of the two extrusion columns are arc-shaped, inner cavities of the two extrusion columns are slidably connected with limiting assemblies, the limiting assemblies comprise limiting columns, and the limiting columns are slidably connected to the inner cavities of the two extrusion columns.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying equipment, and particularly to a surface spraying device for advertising cloth processing. Background Art

[0002] A surface spraying device for advertising cloth processing is a device specifically used for spraying treatment on the surface of advertising cloth or other similar materials. This device has a wide range of applications in fields such as advertising production, sign production, and display layout. Its main function is to evenly spray coatings or other types of decorative materials onto the surface of advertising cloth or other materials through a spraying device, in order to achieve the purposes of beautification, protection, or enhancement of material properties;

[0003] When processing advertising cloth with 3D three-dimensional characters, the commonly used surface spraying device has certain limitations during the flattening process. Firstly, most of the existing devices lack the function of an independently pressing head in design, which will bring significant problems when processing advertising cloth with complex three-dimensional structures. For example, when pressing advertising cloth with fine three-dimensional characters, due to the inability of the pressing head to press independently, uneven pressure will occur. Especially at the edge of the characters, obvious "white edge" defects will appear in places where the pressure is too light, thus affecting the beauty of the advertising cloth;

[0004] In view of this, the present invention proposes a surface spraying device for advertising cloth processing to solve the above technical problems. Summary of the Invention

[0005] In view of the deficiencies in the above background art, the present invention provides a technical solution for a surface spraying device for advertising cloth processing. By designing multiple flattening heads and adjustment components, each flattening head can be independently adjusted in height. The flattening head is used to flatten the advertising cloth during the spraying process to ensure the uniformity of the advertising cloth surface. The adjustment component can adjust the height of each flattening head to meet the requirements of different positions and thicknesses of the advertising cloth. In this way, when processing advertising cloth with complex three-dimensional structures (such as fine three-dimensional characters), it can ensure that each flattening head can apply pressure evenly, avoiding defects such as "white edges" at the edge of the characters. At the same time, the working principle of this device is: by adjusting the components to separately adjust the height of each flattening head to match the uneven parts of the advertising cloth surface, so as to ensure uniform adsorption of the spraying material while achieving uniform flattening of the advertising cloth, and achieving a flat and defect-free spraying effect.

[0006] The present invention provides the following technical solution: A surface spraying device for advertising cloth processing, including a frame;

[0007] A connecting frame is slidably connected to the inner cavity of the frame. A screed plate is rotatably connected to the inner cavity of the connecting frame. A connecting shell is fixedly connected to the surface of the screed plate. A screed head is slidably connected to the inner cavity of the connecting shell. A first return spring is arranged on the opposite surfaces of the connecting shell and the screed head. An adjusting assembly is fixedly connected to the top of the screed head;

[0008] The adjusting assembly includes two extrusion blocks. The two extrusion blocks are fixedly connected to the top of the screed head. The two extrusion blocks are in a staircase shape and are symmetrically designed. A knob is rotatably connected to the inner cavity of the connecting shell. One end of the knob is fixedly connected with two extrusion columns. The surfaces of the two extrusion blocks are chamfered. The bottoms of the two extrusion columns are in an arc shape;

[0009] A limiting assembly is slidably connected to the inner cavities of the two extrusion columns. The limiting assembly includes a limiting column. The limiting column is slidably connected to the inner cavities of the two extrusion columns.

[0010] As a preferred technical solution of the present invention, the limiting assembly further includes a plurality of limiting holes. The limiting holes are opened on the tops of the two extrusion blocks. A sliding ring is slidably connected to the surface of the knob. One end of the limiting column is fixedly connected with one end of the sliding ring. A connecting plate is fixedly connected to the surface of the knob. A second return spring is arranged on the opposite surfaces of the connecting plate and the sliding ring. A guiding column is fixedly connected to the bottom of the connecting plate. The inner cavity of the sliding ring is slidably matched with the surface of the guiding column.

[0011] As a preferred technical solution of the present invention, the connecting frame and the inner cavity of the screed plate are connected by an electric push rod. The two ends of the electric push rod are respectively hinged to the connecting frame and the screed plate. A threaded rod and a guiding rod are respectively arranged in the inner cavity of the frame. A threaded hole matched with the threaded rod and a guiding hole matched with the guiding rod are arranged inside the connecting frame. One end of the threaded rod is fixedly connected with a servo motor. The servo motor is fixedly installed on the rear surface of the frame.

[0012] As a preferred technical solution of the present invention, a plurality of conveying rollers are rotatably connected to the inner cavity of the frame. The plurality of conveying rollers are equidistantly distributed along the conveying direction of the advertising cloth. Synchronous wheels are fixedly connected to both ends of each conveying roller. A synchronous belt is sleeved in the inner cavity of the synchronous wheel. One end of one of the conveying rollers is fixedly connected with a second motor. The second motor is fixedly installed on the outer side wall of the frame.

[0013] As a preferred technical solution of the present invention, a pressing roller is slidably connected to the inner cavity of the frame. A third return spring is arranged between the pressing roller and the frame. The axes of the pressing rollers are parallel and located in the same vertical plane.

[0014] As a preferred technical solution of the present invention, a housing is bolted to the top of the frame. A paint box is fixedly connected to the top of the housing. A feed pump is bolted to the top of the paint box. The output end of the feed pump is connected to a feed pipe. One end of the feed pipe extends into the inner cavity of the housing and is connected to a spray head.

[0015] As a preferred technical solution of the present invention, a damping bearing is provided at the position where the screed plate is rotatably connected to the connecting frame. The outer ring of the damping bearing is fixedly connected to the inner cavity of the connecting frame, and the inner ring is fixedly connected to the rotating shaft of the screed plate.

[0016] As a preferred technical solution of the present invention, the spray heads are arranged at equal intervals along the conveying direction of the advertising cloth, and the spray heads are connected to the feed pipe through rotatable joints.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By designing a plurality of screed heads and corresponding adjusting components, the present invention can independently adjust the height of each screed head, so as to ensure that the pressure is evenly distributed in each part during the pressing process. This design effectively solves the problem of uneven pressure in the prior art, significantly improves the screeding effect, completely eliminates the "white edge" defect, and improves the overall aesthetics of the advertising cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is an exploded view of the present invention;

[0021] Figure 3 is a partially enlarged view of the present invention;

[0022] Figure 4 is a schematic structural diagram of the threaded rod of the present invention;

[0023] Figure 5 is a schematic structural diagram of the screed plate of the present invention;

[0024] Figure 6 is a cross-sectional view of the present invention;

[0025] Figure 7 is a schematic structural diagram of the extrusion block of the present invention;

[0026] Figure 8 is a schematic structural diagram of the extrusion column of the present invention;

[0027] Figure 9 is a schematic structural diagram of the spray head of the present invention.

[0028] In the figure: 1, frame; 101, connecting frame; 2, screed board; 201, connecting shell; 202, screed head; 203, first return spring; 3, extrusion block; 301, knob; 302, extrusion column; 4, limit post; 401, limit hole; 402, sliding ring; 403, connecting plate; 404, second return spring; 405, guiding post; 5, electric push rod; 501, threaded rod; 502, servo motor; 6, conveying roller; 601, synchronous pulley; 602, synchronous belt; 603, second motor; 7, extrusion roller; 701, third return spring; 8, housing; 801, paint tank; 802, feed pump; 803, feed pipe; 804, nozzle. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-9 As shown, a surface spraying device for advertising cloth processing includes a frame 1. A connecting frame 101 is slidably connected to the inner cavity of the frame 1. A screed board 2 is rotatably connected to the inner cavity of the connecting frame 101. A connecting shell 201 is fixedly connected to the surface of the screed board 2. A screed head 202 is slidably connected to the inner cavity of the connecting shell 201. A first return spring 203 is provided on the opposite surface of the connecting shell 201 and the screed head 202. An adjusting assembly is fixedly connected to the top of the screed head 202. The adjusting assembly includes two extrusion blocks 3. The two extrusion blocks 3 are fixedly connected to the top of the screed head 202. The two extrusion blocks 3 are in a staircase shape and are symmetrically designed. A knob 301 is rotatably connected to the inner cavity of the connecting shell 201. One end of the knob 301 is fixedly connected with two extrusion columns 302. The surfaces of the two extrusion blocks 3 are rounded off, and the bottoms of the two extrusion columns 302 are in an arc shape;

[0031] When it is necessary to adjust the height of the screed head 202, first unlock the extrusion column 302, and then rotate the knob 301 to drive the two extrusion columns 302 to rotate, so that the two extrusion columns 302 extrude the surfaces of the two extrusion blocks 3 to adjust the height of the screed head 202. When adjusting the height, rotating clockwise will cause the screed head 202 to move upward under the action of the first return spring 203, while rotating counterclockwise will cause the screed head 202 to move downward;

[0032] The inner cavities of the two extrusion columns 302 are both slidably connected with limiting components. The limiting components include limiting columns 4. The limiting columns 4 are slidably connected to the inner cavities of the two extrusion columns 302. The limiting components further include a plurality of limiting holes 401. The limiting holes 401 are opened at the tops of the two extrusion blocks 3. A sliding ring 402 is slidably connected to the surface of the knob 301. One end of the limiting column 4 is fixedly connected to one end of the sliding ring 402. A connecting plate 403 is fixedly connected to the surface of the knob 301. A second return spring 404 is provided on the opposite surfaces of the connecting plate 403 and the sliding ring 402. A guiding column 405 is fixedly connected to the bottom of the connecting plate 403. The inner cavity of the sliding ring 402 is slidably matched with the surface of the guiding column 405;

[0033] When it is necessary to unlock the extrusion column 302, hold the sliding ring 402 with two fingers and move the sliding ring 402 downward. The downward movement of the sliding ring 402 drives the limiting column 4 to move upward, so that the limiting column 4 disengages from the inner cavity of the limiting hole 401 to unlock the extrusion column 302;

[0034] When it is necessary to lock the extrusion column 302, first align the limiting column 4 with the limiting hole 401. After the alignment is completed, release the sliding ring 402. At this time, the sliding ring 402 moves downward by itself under the action of the second return spring 404 and drives the limiting column 4 to be inserted into the inner cavity of the limiting hole 401 to lock the extrusion column 302;

[0035] By providing the guiding column 405, the guiding column 405 is mainly used to limit the sliding ring 402;

[0036] A connection frame 101 is connected to the inner cavity of the screed plate 2 through an electric push rod 5. The two ends of the electric push rod 5 are respectively hinged to the connection frame 101 and the screed plate 2. A threaded rod 501 and a guiding rod are respectively provided in the inner cavity of the frame 1. A threaded hole matching with the threaded rod 501 and a guiding hole matching with the guiding rod are provided inside the connection frame 101. One end of the threaded rod 501 is fixedly connected to a servo motor 502. The servo motor 502 is fixedly installed on the rear surface of the frame 1;

[0037] By providing the electric push rod 5, the electric push rod 5 is mainly used to adjust the angle of the screed plate 2 so that the screed head 202 contacts the surface of the advertising cloth;

[0038] When it is necessary to move the screed head 202, start the servo motor 502. The servo motor 502 drives the threaded rod 501 to rotate. The rotation of the threaded rod 501 drives the connection frame 101 to move. The movement of the connection frame 101 drives the screed plate 2 and the screed head 202 to move to level the surface of the advertising cloth;

[0039] A plurality of conveying rollers 6 are rotatably connected to the inner cavity of the frame 1. The plurality of conveying rollers 6 are equidistantly distributed along the conveying direction of the advertising cloth. Both ends of each conveying roller 6 are fixedly connected with synchronous wheels 601. A synchronous belt 602 is sleeved in the inner cavity of the synchronous wheel 601. One end of one of the conveying rollers 6 is fixedly connected with a second motor 603, and the second motor 603 is fixedly installed on the outer side wall of the frame 1;

[0040] When the advertising cloth is placed on the surfaces of the plurality of conveying rollers 6, start the second motor 603. The second motor 603 can drive one of the conveying rollers 6 to rotate. One of the conveying rollers 6 rotates and then drives the synchronous wheel 601 to rotate. The synchronous wheel 601 rotates and then drives the synchronous belt 602 to rotate. The synchronous belt 602 rotates and then drives the plurality of synchronous wheels 601 to rotate, so that the plurality of conveying rollers 6 rotate synchronously to convey the advertising cloth;

[0041] A pressing roller 7 is slidably connected to the inner cavity of the frame 1. A third return spring 701 is provided between the pressing roller 7 and the frame 1. The axis of the pressing roller 7 is parallel and located in the same vertical plane;

[0042] By setting the pressing roller 7, when feeding the advertising cloth through the feeding port of the device, the pressing roller 7 will adaptively lift under the action of the third return spring 701, so that the pressing roller 7 is always in contact with the surface of the advertising cloth, and the surface of the advertising cloth is squeezed and initially smoothed;

[0043] A housing 8 is bolted to the top of the frame 1. A paint tank 801 is fixedly connected to the top of the housing 8. A feed pump 802 is bolted to the top of the paint tank 801. The output end of the feed pump 802 is connected with a feed pipe 803. One end of the feed pipe 803 extends into the inner cavity of the housing 8 and is connected with a spray head 804;

[0044] During use, the paint in the inner cavity of the paint tank 801 is pumped by the feed pump 802. The paint enters the inner cavity of the feed pipe 803 through the feed pump 802 and is sprayed out from the spray head 804 through the feed pipe 803 to perform spraying operation on the advertising cloth;

[0045] A damping bearing is provided at the position where the flattening plate 2 is rotatably connected to the connecting frame 101. The outer ring of the damping bearing is fixedly connected to the inner cavity of the connecting frame 101, and the inner ring is fixedly connected to the rotating shaft of the flattening plate 2.

[0046] The spray heads 804 are arranged equidistantly along the conveying direction of the advertising cloth. The spray heads 804 are connected to the feed pipe 803 through rotatable joints;

[0047] Since the spray head 804 is connected to the feed pipe 803 through a rotary joint, the user can remove the spray head 804 through the rotary joint and replace it with a suitable spray head 804.

[0048] Before using this advertising cloth spraying device, two basic preparation tasks need to be completed. First, pour the paint that meets the spraying requirements of the device (select the corresponding type of paint according to the material of the advertising cloth and the spraying effect) into the inner cavity of the paint tank 801. During the addition process, pay attention to observing the scale line set on the side of the paint tank 801 to ensure that the paint addition amount reaches above the lowest scale line to meet the usage requirements of subsequent spraying operations;

[0049] At the same time, the initial position of the flattening plate 2 of the device is at the output port of the device; at this time, the flattening plate 2 maintains a horizontal state, and the flattening head 202 at its bottom is parallel to the plane of the output port and the distance is zero, in a standby state, ready for the subsequent flattening operation of the advertising cloth;

[0050] When it is necessary to spray the advertising cloth, first, according to the type of the advertising cloth (such as the material is canvas, light box cloth, etc., with different thicknesses), adjust the height of the flattening head 202. The operator pulls the sliding ring 402 with two fingers, applying an upward pulling force to make the sliding ring 402 move upward along the guide post 405. The sliding ring 402 is connected to the limit post 4 through a connecting rod. Therefore, the upward movement of the sliding ring 402 will drive the limit post 4 to move upward until the limit post 4 completely disengages from the inner cavity of the limit hole 401, thus releasing the limit lock on the extrusion post 302 and completing the unlocking operation;

[0051] Then, rotate the knob 301. The rotation of the knob 301 will drive the two extrusion posts 302 to rotate synchronously. When the knob 301 is rotated clockwise by 30 degrees, the extrusion surface of the extrusion post 302 gradually separates from the surface of the extrusion block 3. At this time, the second return spring 404 installed between the flattening head 202 and the connection shell 201 restores its elastic deformation due to the disappearance of the pressure of the extrusion post 302, generating an upward elastic force to push the flattening head 202 to rise by 1.5 mm. On the contrary, when the knob 301 is rotated counterclockwise by 30 degrees, the extrusion surface of the extrusion post 302 gradually presses against the surface of the extrusion block 3, applying a downward pressure to the extrusion block 3. The extrusion block 3 drives the flattening head 202 to move downward, compressing the second return spring 404 to make the flattening head 202 descend by 1.5 mm. The operator can rotate the knob 301 multiple times according to the actual needs of the advertising cloth until the flattening head 202 is adjusted to the appropriate height. After the adjustment is completed, release the sliding ring 402. With the assistance of the second return spring 404, the limit post 4 falls back and inserts into the inner cavity of the limit hole 401 to lock the extrusion post 302 to ensure the height of the flattening head 202 is fixed;

[0052] Then, start the second motor 603. The output shaft of the second motor 603 is fixedly connected to the rotating shaft of one of the conveying rollers 6 through a coupling. Therefore, the rotation of the second motor 603 will drive the rotation of the conveying roller 6. A synchronous pulley 601 is fixedly installed on the rotating shaft of the conveying roller 6. The synchronous pulley 601 meshes with the synchronous belt 602. When the conveying roller 6 rotates, the synchronous pulley 601 rotates accordingly, thereby driving the synchronous belt 602 to circulate between multiple synchronous pulleys 601. Synchronous pulleys 601 are also respectively installed on the rotating shafts of the other conveying rollers 6. The rotation of the synchronous belt 602 will drive these synchronous pulleys 601 to rotate synchronously, thereby realizing the synchronous rotation of multiple conveying rollers 6 and providing power for the conveying of the advertising cloth.

[0053] Then, place the advertising cloth to be sprayed at the feeding port of the device and slowly insert the advertising cloth between the squeezing roller 7 and the conveying roller 6. When the advertising cloth is inserted between the squeezing roller 7 and the conveying roller 6, the thickness of the advertising cloth will cause the squeezing roller 7 to receive an upward or downward pressure. The third return spring 701 will automatically expand and contract according to the magnitude of the pressure, driving the squeezing roller 7 to perform adaptive lifting and lowering, so that the squeezing roller 7 is always in close contact with the surface of the advertising cloth, squeezing the surface of the advertising cloth and initially smoothing out possible wrinkles or unevenness on the surface of the advertising cloth, preparing for subsequent fine smoothing and spraying.

[0054] When the surface of the advertising cloth moves below the nozzle 804, start the servo motor 502. The rotation of the servo motor 502 will drive the rotation of the threaded rod 501, and then cause the connecting frame 101 to move along the axial direction of the threaded rod 501. The connecting frame 101 is connected to the flattening plate 2. Therefore, the movement of the connecting frame 101 will drive the flattening plate 2 and the flattening head 202 to move towards the squeezing roller 7. The operator can set the moving distance through the control system of the device. After moving to the predetermined position, turn off the servo motor 502 to stop the movement of the flattening plate 2 and the flattening head 202.

[0055] Next, start the electric push rod 5. The telescopic end of the electric push rod 5 is hinged to the flattening plate 2. By the telescopic action of the electric push rod 5, adjust the angle of the flattening plate 2 to make the flattening head 202 fully contact the surface of the advertising cloth. After the contact is completed, start the servo motor 502 again to reverse the rotation of the threaded rod 501, driving the connecting frame 101 and the flattening head 202 to move back to the initial position. During the reset process, the flattening head 202 moves along the surface of the advertising cloth with a constant pressure, finely smoothing the surface of the advertising cloth, further eliminating the fine wrinkles on the surface of the advertising cloth, ensuring the flatness of the surface of the advertising cloth, and providing a good foundation for the spraying operation.

[0056] After the smoothing is completed, start the material feeding pump 802. The material feeding pump 802 is connected to the inner cavity of the paint tank 801 through the suction pipe, and is connected to the spray head 804 through the material feeding pipe 803. When the material feeding pump 802 works, the paint in the inner cavity of the paint tank 801 is extracted. Under the pressure of the material feeding pump 802, the paint enters the inner cavity of the material feeding pipe 803 through the material feeding pump 802, and is sprayed out from the spray head 804 through the material feeding pipe 803. The spray head 804 adopts an atomizing spray head, which can evenly spray the paint on the surface of the advertising cloth to ensure that the spraying effect is uniform and delicate;

[0057] During the spraying process, start the second motor 603 again to make the conveying roller 6 rotate, driving the advertising cloth to continuously move. Under the combined action of the conveying roller 6 and the pressing roller 7, the advertising cloth is conveyed forward at a constant speed (the speed can be set according to the spraying effect and the paint drying time), realizing continuous operation of spraying while conveying. The sprayed advertising cloth finally exits the inner cavity of the device through the discharge port of the device. The operator can receive the sprayed advertising cloth at the discharge port for subsequent processing or storage.

[0058] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present invention, the filling patterns are only for differentiating the layers and are not subject to any other limitations.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface spraying device for processing advertising cloth, comprising: Rack(1); The invention is characterized in that: the inner cavity of the frame (1) is slidably connected to a connecting frame (101), the inner cavity of the connecting frame (101) is rotatably connected to a smoothing plate (2), the surface of the smoothing plate (2) is fixedly connected to a connecting shell (201), the inner cavity of the connecting shell (201) is slidably connected to a smoothing head (202), the opposite surfaces of the connecting shell (201) and the smoothing head (202) are provided with a first return spring (203), and the top of the smoothing head (202) is fixedly connected to an adjustment component; The adjustment component comprises two extrusion blocks (3), the two extrusion blocks (3) are fixedly connected to the top of the smoothing head (202), the two extrusion blocks (3) are in the shape of stairs and are symmetrically designed, the inner cavity of the connection shell (201) is rotatably connected to a knob (301), one end of the knob (301) is fixedly connected to two extrusion columns (302), the surfaces of the two extrusion blocks (3) are chamfered, and the bottoms of the two extrusion columns (302) are in an arc shape; The inner cavities of the two extrusion columns (302) are both slidably connected to a limiting assembly, wherein the limiting assembly comprises a limiting column (4), and the limiting column (4) is slidably connected to the inner cavities of the two extrusion columns (302).

2. The surface spraying device for processing advertising cloth according to claim 1 is characterized in that: The limiting assembly further comprises a plurality of limiting holes (401), wherein the limiting holes (401) are provided at the tops of the two extrusion blocks (3); a sliding ring (402) is slidably connected to the surface of the knob (301); one end of the limiting column (4) is fixedly connected to one end of the sliding ring (402); a connecting plate (403) is fixedly connected to the surface of the knob (301); a second return spring (404) is provided on the opposite surfaces of the connecting plate (403) and the sliding ring (402); a guide column (405) is fixedly connected to the bottom of the connecting plate (403); and an inner cavity of the sliding ring (402) is slidably matched with the surface of the guide column (405).

3. The surface spraying device for processing advertising cloth according to claim 1, characterized in that: The connecting frame (101) and the inner cavity of the smoothing plate (2) are connected via an electric push rod (5); the two ends of the electric push rod (5) are respectively hinged to the connecting frame (101) and the smoothing plate (2); the inner cavity of the frame (1) is respectively provided with a threaded rod (501) and a guide rod; the interior of the connecting frame (101) is provided with a threaded hole cooperating with the threaded rod (501) and a guide hole cooperating with the guide rod; one end of the threaded rod (501) is fixedly connected to a servo motor (502); and the servo motor (502) is fixedly mounted on the rear surface of the frame (1).

4. The surface spraying device for processing advertising cloth according to claim 1, characterized in that: The inner cavity of the frame (1) is rotatably connected to a plurality of conveying rollers (6), and the plurality of conveying rollers (6) are equidistantly distributed along the conveying direction of the advertising cloth. Both ends of each conveying roller (6) are fixedly connected to a synchronous wheel (601), and the inner cavity of the synchronous wheel (601) is sleeved with a synchronous belt (602). One end of one of the conveying rollers (6) is fixedly connected to a second motor (603), and the second motor (603) is fixedly mounted on the outer wall of the frame (1).

5. The surface spraying device for processing advertising cloth according to claim 1, characterized in that: The inner cavity of the frame (1) is slidably connected to a squeezing roller (7), a third return spring (701) is provided between the squeezing roller (7) and the frame (1), and the axes of the squeezing rollers (7) are parallel and located in the same vertical plane.

6. The surface spraying device for processing advertising cloth according to claim 1, characterized in that: The top of the frame (1) is bolted to a shell (8), the top of the shell (8) is fixedly connected to a paint box (801), the top of the paint box (801) is bolted to a feed pump (802), the output end of the feed pump (802) is connected to a feed pipe (803), one end of the feed pipe (803) extends to the inner cavity of the shell (8) and is connected to a spray head (804).

7. The surface spraying device for processing advertising cloth according to claim 1, characterized in that: A damping bearing is provided at the position where the caressing plate (2) and the connecting frame (101) are rotatably connected, the outer ring of the damping bearing being fixedly connected to the inner cavity of the connecting frame (101), and the inner ring being fixedly connected to the rotating shaft of the caressing plate (2).

8. The surface spraying device for processing advertising cloth according to claim 6, characterized in that: The nozzles (804) are arranged at equal distances along the conveying direction of the advertising cloth, and the nozzles (804) are connected to the conveying pipe (803) via a rotatable joint.

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