Device for uniformly coating glue on back surface of impregnated paper

Abstract

The utility model belongs to the technical field of gum dipping paper coating, and particularly relates to a gum dipping paper back glue uniform coating device which comprises a base, an n-shaped supporting frame is fixed on the upper surface of the base, and a coating mechanism used for gluing gum dipping paper and a dust removal mechanism used for removing dust on the surface of the gum dipping paper are installed on the supporting frame. The dust removal mechanism comprises a dust suction assembly used for sucking dust and a dust collection assembly used for collecting the dust. By arranging the dust removal mechanism, the fan is used for generating negative pressure, and the dust on the surface of the impregnated paper is sucked through the dust suction hopper, so that the surface of the impregnated paper is in a clean and tidy state before gluing, and the negative effects of dust, impurities and other negative factors on the impregnated paper in the gluing process are reduced; and the quality and the gluing effect of the gummed paper finished product are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sizing of impregnated paper, and particularly relates to a device for evenly coating glue on the back of impregnated paper. Background Art

[0002] The full name of impregnated paper is melamine impregnated film paper, also known as "melamine" paper. It is a sizing paper made of plain base paper or printed decorative paper impregnated with amino resin and dried to a certain degree, with a certain resin content and volatile content. It can be glued to each other or to the substrate of artificial board by hot pressing. Coating equipment is used in the production process of impregnated paper.

[0003] For example, the Chinese patent with the publication number CN220346383U discloses a device for evenly coating glue on the back of impregnated paper, which relates to the technical field of impregnated paper coating. It includes an operating table, and a gantry frame is fixedly connected to the top of the operating table. On both sides of the opposite surfaces of the top of the operating table, a feeding mechanism and a receiving mechanism are respectively arranged. At both ends of one side of the contact surfaces of the feeding mechanism, the receiving mechanism and the operating table, a telescopic mechanism is respectively arranged. In the middle of one side of the outer wall of the operating table, an energy supply mechanism is arranged. At one end of the top of the gantry frame, a coating box is arranged, and a coating mechanism is arranged at the top end inside the gantry frame. By fixedly connecting second connecting arms to both ends of the top of one side of the operating table, and arranging a motor at one end of one of the second connecting arms, the rotating column is driven to rotate by the operation of the motor, and the receiving cylinder is driven to rotate by the rotation of the rotating column, so as to collect the impregnated paper with glue coated, thereby improving work efficiency and reducing the labor intensity of workers.

[0004] This patent has some disadvantages when in use. For example, the device in this patent lacks means for dealing with dust on the impregnated paper. When there is dust on the impregnated paper and the dust is not cleaned, when the sizing liquid finishes coating the impregnated paper, due to the existence of dust particles, there will be pores in the sizing liquid layer coated on the impregnated paper, the sizing liquid cannot completely enter the interior of the impregnated paper, and the impregnated paper will be deformed, etc., resulting in a reduction in the quality of the final impregnated paper. In view of this, we propose a device for evenly coating glue on the back of impregnated paper. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a device for evenly coating glue on the back of impregnated paper to solve the problems raised in the above background art.

[0006] In view of this, the utility model provides a device for evenly coating glue on the back of impregnated paper, including:

[0007] A base, wherein a support frame in a shape of a U is fixed to the upper surface of the base, a coating mechanism for gluing the dipped paper and a dust removal mechanism for removing dust on the surface of the dipped paper are installed on the support frame, the dust removal mechanism comprises a dust suction component for sucking dust and a dust collecting component for collecting dust, brackets are symmetrically arranged on the front and rear sides of the base, a winding roller and a collecting roller are rotatably installed on the two brackets respectively, a driving motor is installed on the bracket located on the rear side of the base, and the output shaft of the driving motor is coaxially connected with the collecting roller, the dust removal mechanism is located on the front side of the coating mechanism, and the winding roller is located on the front side of the collecting roller.

[0008] In the above technical solution, further, the coating mechanism includes:

[0009] A rubber box, the rubber box is fixedly mounted on the upper surface of a support frame, a vane pump is fixedly mounted on the circumferential side of the rubber box and on the upper surface of the support frame, the input end of the vane pump passes through the outer wall of the rubber box and extends to the inner cavity of the rubber box, the output end of the vane pump passes through the upper surface of the support frame and extends to the inner cavity of the support frame, a shunt pipe is arranged in the support frame and directly below the output end of the vane pump, a plurality of rubber outlet pipes linearly and evenly distributed are fixed on the lower surface of the shunt pipe, a nozzle is fixed on the bottom end of the rubber outlet pipe, a folded hose is fixed on the feed end of the upper surface of the shunt pipe, and the other end of the folded hose is fixed to the output end of the vane pump.

[0010] In the above technical solution, further, the coating mechanism also includes:

[0011] Two connecting blocks are symmetrically fixed at both ends of the shunt pipe, an electric push rod fixed to the inner top surface of the support frame is arranged directly above the connecting block, and the bottom end of the telescopic rod of the electric push rod is fixed to the upper surface of the connecting block, an upper pressure roller is rotatably installed between the two connecting blocks and located on the rear side of the shunt pipe, a lower pressure roller is arranged directly below the upper pressure roller, and bearing seats fixed to the inner wall of the support frame are symmetrically arranged at both ends of the lower pressure roller, and the lower pressure roller rotates in cooperation with the bearing seats.

[0012] In the above technical solution, further, the dust collection component includes:

[0013] An installation opening is provided on the upper surface of the support frame and is located in front of the coating mechanism. A fan is fixedly installed in the installation opening. A dust removal box is provided in the support frame and directly above the fan. The dust removal box is a frame-like structure with upper and lower openings, and the upper surface of the dust removal box is fixed to the lower surface of the fan. A plurality of groups of evenly distributed sliding members are fixed in the dust removal box, and the sliding members are composed of two symmetrically arranged guide rails, and the guide rails are fixed to the inner wall of the dust removal box. A dustproof net is slidably installed between the two guide rails, and an opening is provided on the side wall of the dust removal box to accommodate the dustproof net to slide out.

[0014] In the above technical solution, further, the dust collection assembly includes:

[0015] A dust collection box, which is fixedly installed on the lower surface of the dust removal box. The dust collection box has a left and right open and internally hollow structure. An air outlet and an air inlet are respectively provided on the upper surface and the lower surface of the dust collection box, and the air outlet and the air inlet are arranged in a staggered manner. Two dust collection plates arranged in a staggered manner are fixed in the inner cavity of the dust collection box. A dust suction hopper is fixed at the position of the air inlet on the lower surface of the dust collection box. Side plates are fixed at the openings on the left and right sides of the dust collection box through bolts. The dust collection plate has a J-shaped structure, and the hooked end of the dust collection plate is arranged downward.

[0016] In the above technical solution, further, limiting components are symmetrically arranged at the front and rear sides of the dust suction hopper inside the support frame. The limiting components are composed of two limiting rollers, and the limiting rollers are rotationally matched with the support frame.

[0017] In this technical solution, by setting the limiting components, it is avoided that the impregnated paper generates wrinkles during the operation of the dust removal mechanism, ensuring the flatness of the surface of the impregnated paper and improving the stability of the impregnated paper during the sizing process.

[0018] In the above technical solution, further, a protective net plate is fixed at the top opening of the installation port.

[0019] In this technical solution, by setting the protective net plate, it plays a good protective role for the fan located inside the installation port.

[0020] The beneficial effects of the present utility model are:

[0021] For the impregnated paper back glue uniform coating device, by setting the dust removal mechanism, negative pressure is generated by the fan, and the dust on the surface of the impregnated paper is sucked through the dust suction hopper, so that the surface of the impregnated paper before sizing is in a clean state, reducing the adverse effects caused by dust and impurities and other adverse factors on the impregnated paper during the sizing process, and improving the quality and sizing effect of the impregnated paper finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the structural distribution of the coating mechanism and the dust removal mechanism in the present utility model;

[0024] Figure 3 It is a schematic diagram of the coating mechanism in the present utility model;

[0025] Figure 4 It is a schematic diagram of the dust removal mechanism in the present utility model;

[0026] Figure 5 This is an exploded view of the dust removal box and the dust collection box in the present utility model;

[0027] Figure 6 This is a structural schematic diagram of the dust collection plate in the present utility model.

[0028] The markings in the figure are indicated as:

[0029] 1. Base; 2. Support frame; 3. Glue tank; 4. Vane pump; 5. Shunt pipe; 6. Glue outlet pipe; 7. Nozzle; 8. Folding hose; 9. Connecting block; 10. Electric push rod; 11. Upper pressure roller; 12. Lower pressure roller; 13. Bearing seat; 14. Installation port; 15. Fan; 16. Dust removal box; 17. Dust collection box; 18. Guide rail; 19. Dust-proof net; 20. Air outlet; 21. Air inlet; 22. Dust collection plate; 23. Dust suction hopper; 24. Side plate; 25. Limiting roller; 26. Protective net plate. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are 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 those of ordinary skill in the art belong to the scope protected by the present application.

[0031] In the description of the present application, it should be noted that the terms used here are only for describing specific implementation manners, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0032] It should be noted that in the description of the present application, terms such as "first" and "second" in the specification and claims are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0033] It should be noted that in the description of the present application, the orientation or positional relationships indicated by terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the terms "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0034] It should be noted that in the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0035] Embodiment 1:

[0036] Please refer to Figure 1 - Figure 6 As shown in the figure, this embodiment provides a device for uniformly coating glue on the back of impregnated paper, including:

[0037] A base 1, a support frame 2 in a shape of a 冂 is fixed on the upper surface of the base 1, a coating mechanism for gluing the dipped paper and a dust removal mechanism for removing dust from the surface of the dipped paper are installed on the support frame 2, the dust removal mechanism includes a dust suction component for sucking dust and a dust collection component for collecting dust, brackets are symmetrically arranged on the front and rear sides of the base 1, a winding roller and a collecting roller are rotatably installed on the two brackets, a driving motor is installed on the bracket located at the rear side of the base 1, and the output shaft of the driving motor is coaxially connected with the collecting roller, the dust removal mechanism is located at the front side of the coating mechanism, and the winding roller is located at the front side of the collecting roller;

[0038] In this embodiment, the coating mechanism includes:

[0039] Glue box 3, glue box 3 is fixedly mounted on the upper surface of support frame 2, vane pump 4 is fixedly mounted on the peripheral side of glue box 3 and on the upper surface of support frame 2, the input end of vane pump 4 passes through the outer wall of glue box 3 and extends to the inner cavity of glue box 3, the output end of vane pump 4 passes through the upper surface of support frame 2 and extends to the inner cavity of support frame 2, a shunt pipe 5 is arranged in support frame 2 and directly below the output end of vane pump 4, a plurality of glue outlet pipes 6 linearly and evenly spaced are fixed on the lower surface of shunt pipe 5, a nozzle 7 is fixed on the bottom end of glue outlet pipe 6, a folding hose 8 is fixed on the feeding end of the upper surface of shunt pipe 5, and the other end of folding hose 8 is fixed to the output end of vane pump 4;

[0040] In this embodiment, the coating mechanism further includes:

[0041] Two connecting blocks 9, the two connecting blocks 9 are symmetrically fixed at the two ends of the shunt pipe 5, an electric push rod 10 fixed to the inner top surface of the support frame 2 is arranged directly above the connecting block 9, and the bottom end of the telescopic rod of the electric push rod 10 is fixed to the upper surface of the connecting block 9, an upper pressure roller 11 is rotatably installed between the two connecting blocks 9 and located at the rear side of the shunt pipe 5, a lower pressure roller 12 is arranged directly below the upper pressure roller 11, and bearing seats 13 fixed to the inner wall of the support frame 2 are symmetrically arranged at both ends of the lower pressure roller 12, and the lower pressure roller 12 is rotatably matched with the bearing seat 13;

[0042] In this embodiment, the dust collection component includes:

[0043] The installation opening 14 is provided on the upper surface of the support frame 2 and is located at the front side of the coating mechanism. A blower 15 is fixedly installed in the installation opening 14. Inside the support frame 2 and directly above the blower 15, there is a dust removal box 16. The dust removal box 16 is in the shape of a frame with openings at both the top and bottom. The upper surface of the dust removal box 16 is fixed to the lower surface of the blower 15. Inside the dust removal box 16, multiple groups of uniformly distributed sliding members are fixed. The sliding member consists of two symmetrically arranged guide rails 18, and the guide rails 18 are fixed to the inner wall of the dust removal box 16. A dust-proof net 19 is slidably installed between the two guide rails 18. An opening for accommodating the dust-proof net 19 to slide out is provided on the side wall of the dust removal box 16;

[0044] In this embodiment, the dust collection assembly includes:

[0045] A dust collection box 17 is fixedly installed on the lower surface of the dust removal box 16. The dust collection box 17 has a hollow structure with openings on both the left and right sides. An air outlet 20 and an air inlet 21 are respectively provided on the upper surface and the lower surface of the dust collection box 17, and the air outlet 20 and the air inlet 21 are arranged in a staggered manner. Two staggered dust collection plates 22 are fixed inside the cavity of the dust collection box 17. A dust suction hopper 23 is fixed on the lower surface of the dust collection box 17 at the position of the air inlet 21. Side plates 24 are fixed to the openings on both sides of the dust collection box 17 by bolts. The dust collection plate 22 is in a J-shaped structure, and the hooked end of the dust collection plate 22 faces downward.

[0046] Among them, the working principle of this device is as follows:

[0047] First, insert the reel of the impregnated paper into the roller at the front side of the base 1, then draw the impregnated paper through the dust removal mechanism and the coating mechanism in sequence, and fix one end of the impregnated paper on the collecting roller. At this time, start the coating mechanism, the dust removal mechanism, and the drive motor;

[0048] The drive motor works to slowly pull the impregnated paper for winding. The coating mechanism works to apply glue to the upper surface of the impregnated paper. The dust removal mechanism works to remove dust and impurities on the upper surface before the impregnated paper is coated with glue;

[0049] When the coating mechanism works, the vane pump 4 transports the glue in the inner cavity of the support frame 2 to the folding hose 8. The glue enters the shunt pipe 5 through the folding hose 8 and then flows into a plurality of glue outlet pipes 6 in sequence, and is evenly sprayed on the upper surface of the impregnated paper through the nozzles 7. As the impregnated paper is continuously wound, the glue on the impregnated paper is evenly coated on the surface of the impregnated paper under the action of the upper pressure roller 11 and the lower pressure roller 12. In this process, the distance between the plurality of nozzles 7 and the bottom end of the upper pressure roller 11 and the impregnated paper can be adjusted by controlling the two electric push rods 10, so as to change the thickness of the glue coating;

[0050] When the dust removal mechanism is working, the fan 15 operates to generate negative pressure. At this time, suction is generated at the dust suction hopper 23 at the bottom end, and the dust on the upper surface of the impregnated paper is sucked into the dust collection box 17 through the dust suction hopper 23. The dust is blocked by the two dust collection plates 22, and the large particle impurities in the dust will remain in the dust collection box 17. A very small part of the relatively fine dust enters the upper dust removal box 16 through the air outlet 20 and is adsorbed and filtered under the action of the multiple dust-proof nets 19. When cleaning the multiple dust-proof nets 19, just pull the dust-proof nets 19 outward to clean them. When cleaning the dust collection box 17, it is necessary to remove the two side plates 24 and then rinse the inner cavity of the dust collection box 17 with clean water;

[0051] It is worth adding that support legs are fixedly installed at the lower surface of the base 1 and near the four corner positions. Universal wheels are installed at the bottom ends of the support legs. Hydraulic cylinders are symmetrically and fixedly installed at the lower surface of the base 1 and between two adjacent support legs. The bottom end of the telescopic rod of the hydraulic cylinder is fixedly installed with an anti-slip support block. By controlling the telescopic movement of the hydraulic cylinder, the moving or fixing method of the device is changed. When the universal wheels contact the ground, the device can be moved arbitrarily. When the anti-slip support block contacts the ground, the device is fixed on the ground and can no longer move freely. This is the prior art and will not be elaborated in this application.

[0052] By setting up the dust removal mechanism, negative pressure is generated by the fan 15, and the dust on the surface of the impregnated paper is sucked through the dust suction hopper 23, making the surface of the impregnated paper clean before gluing, reducing the adverse effects caused by dust and impurities and other adverse factors during the gluing process of the impregnated paper, and improving the quality and gluing effect of the finished impregnated paper.

[0053] Embodiment 2:

[0054] This embodiment provides an impregnated paper back glue uniform coating device. In addition to including the technical solutions of the above embodiment, it also has the following technical features. Limiting components are symmetrically arranged inside the support frame 2 and at the front and rear positions of the dust suction hopper 23. The limiting components are composed of two limiting rollers 25, and the limiting rollers 25 are rotationally matched with the support frame 2.

[0055] Among them, before the impregnated paper is glued, the impregnated paper passes through the two limiting components in sequence, so that the impregnated paper can be clamped and constrained by the limiting rollers 25 in the two limiting components.

[0056] By setting up the limiting components, it is avoided that the impregnated paper wrinkles when the dust removal mechanism is working, ensuring the flatness of the surface of the impregnated paper and improving the stability of the impregnated paper during the gluing process.

[0057] Embodiment 3:

[0058] This embodiment provides a device for evenly coating glue on the back of impregnated paper. In addition to including the technical solutions of the above embodiments, it also has the following technical features: a protective mesh plate 26 is fixed at the top opening of the mounting port 14.

[0059] Among them, by setting the protective mesh plate 26, a good protective effect is achieved on the blower 15 located in the mounting port 14.

[0060] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A device for uniformly coating glue on the back of impregnated paper, characterized in that: Including: A base (1), on the upper surface of which a U-shaped support frame (2) is fixed. A coating mechanism for applying glue to impregnated paper and a dust removal mechanism for removing dust on the surface of the impregnated paper are installed on the support frame (2). The dust removal mechanism includes a dust suction component for sucking dust and a dust collection component for collecting dust. Brackets are symmetrically arranged on the front and rear sides of the base (1). A winding roller and a collecting roller are respectively rotatably installed on the two brackets. A driving motor is installed on the bracket at the rear side of the base (1), and the output shaft of the driving motor is coaxially connected to the collecting roller. The dust removal mechanism is located in front of the coating mechanism, and the winding roller is located in front of the collecting roller.

2. The device for uniformly coating glue on the back of dipped paper according to claim 1, characterized in that: The coating mechanism includes: A glue tank (3), which is fixedly installed on the upper surface of the support frame (2). A vane pump (4) is fixedly installed on the upper surface of the support frame (2) around the glue tank (3). The input end of the vane pump (4) penetrates through the outer wall of the glue tank (3) and extends into the inner cavity of the glue tank (3). The output end of the vane pump (4) penetrates through the upper surface of the support frame (2) and extends into the inner cavity of the support frame (2). A shunt pipe (5) is arranged in the support frame (2) directly below the output end of the vane pump (4). A plurality of glue outlet pipes (6) linearly and equally spaced are fixed on the lower surface of the shunt pipe (5). A nozzle (7) is fixed at the bottom end of the glue outlet pipe (6). The feeding end on the upper surface of the shunt pipe (5) is fixed with a folding hose (8), and the other end of the folding hose (8) is fixed to the output end of the vane pump (4).

3. The device for uniformly coating glue on the back of dipped paper according to claim 2, characterized in that: The coating mechanism further includes: Two connecting blocks (9), which are symmetrically fixed at both ends of the shunt pipe (5). An electric push rod (10) fixed to the inner top surface of the support frame (2) is arranged directly above the connecting block (9), and the bottom end of the telescopic rod of the electric push rod (10) is fixed to the upper surface of the connecting block (9). An upper pressure roller (11) is rotatably installed between the two connecting blocks (9) and at the rear side of the shunt pipe (5). A lower pressure roller (12) is arranged directly below the upper pressure roller (11). Bearing seats (13) fixed to the inner wall of the support frame (2) are symmetrically arranged at both ends of the lower pressure roller (12). The lower pressure roller (12) is rotationally matched with the bearing seats (13).

4. The device for uniformly coating glue on the back of dipped paper according to claim 1, characterized in that: The dust suction component includes: The mounting opening (14) is provided on the upper surface of the support frame (2) and is located at the front side of the coating mechanism. A fan (15) is fixedly installed in the mounting opening (14). A dust removal box (16) is provided in the support frame (2) and directly above the fan (15). The dust removal box (16) is a frame-shaped structure with upper and lower openings, and the upper surface of the dust removal box (16) is fixed to the lower surface of the fan (15). A plurality of groups of evenly distributed sliding members are fixed in the dust removal box (16). The sliding members are composed of two symmetrically arranged guide rails (18), and the guide rails (18) are fixed to the inner wall of the dust removal box (16). A dustproof net (19) is slidably installed between the two guide rails (18), and the side wall of the dust removal box (16) is provided with an opening for accommodating the dustproof net (19) to slide out.

5. The device for uniformly coating glue on the back of dipped paper according to claim 4, characterized in that: The dust collection component comprises: A dust collecting box (17), wherein the dust collecting box (17) is fixedly mounted on the lower surface of the dust removal box (16), the dust collecting box (17) is a hollow structure with left and right openings, the upper surface and the lower surface of the dust collecting box (17) are respectively provided with an air outlet (20) and an air inlet (21), and the air outlet (20) and the air inlet (21) are arranged in a staggered manner, the inner cavity of the dust collecting box (17) is fixed with two staggered dust collecting plates (22), a dust hopper (23) is fixed on the lower surface of the dust collecting box (17) and located at the position of the air inlet (21), side plates (24) are fixed at the openings on the left and right sides of the dust collecting box (17) by bolts, the dust collecting plate (22) is a J-shaped structure, and the hook-shaped end of the dust collecting plate (22) is arranged downward.

6. The device for uniformly coating glue on the back of dipped paper according to claim 5, characterized in that: A limiting assembly is symmetrically arranged inside the support frame (2) and at the front and rear sides of the dust hopper (23); the limiting assembly is composed of two limiting rollers (25), and the limiting rollers (25) are rotatably matched with the support frame (2).

7. The device for uniformly coating glue on the back of dipped paper according to claim 4, characterized in that: A protective mesh plate (26) is fixed at the top opening of the installation opening (14).

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