A film-coated hot melt adhesive brushing device

Abstract

The present invention discloses a film-coated hot melt adhesive brushing device, specifically including a heat preservation glue storage device for receiving and storing glue while keeping it warm, a rotating distribution device that rotates to circulate and soak in the heat preservation glue storage device, and a circulating carrier device that is connected to the heat preservation glue storage device and continuously carries a film to form a plane in contact with the rotating distribution device for glue brushing. In the present invention, the rotating distribution device rotates to circulate and soak in the glue in the heat preservation glue storage device, and replenishes the glue to avoid excessive shedding of the glue during rotation, which affects the glue brushing effect. Moreover, by scraping off the glue exceeding the preset thickness, the amount of glue brushed when the rotating distribution device contacts the film is controlled, improving the uniformity of glue distribution during glue brushing, and further improving the forming quality of the gypsum board. In addition, the circulating carrier device carries the film in contact with the rotating distribution device, ensuring effective contact between the film and the rotating distribution device so that the glue and the film are effectively in contact, further improving the glue brushing effect.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum board coating and gluing, and in particular to a coating hot melt adhesive gluing device. Background Art

[0002] Gypsum board is a material widely used in the field of construction. It has excellent properties such as sound insulation, heat insulation and fire prevention. In the production process of gypsum board, it needs to be laminated after the gypsum board is formed. During the lamination process, glue needs to be brushed on one side of the film to ensure the fit of the film.

[0003] In the prior art, when applying glue to the film, a horizontal scraper is generally used to guide the solid glue melted by a hot melt machine, and the glue is discharged through a slender glue outlet provided on the horizontal scraper and then smeared on one side of the film. However, when applying glue to the film in this way, since the glue outlet is relatively slender, the glue output at each location of the glue outlet cannot be well controlled during the extrusion of the glue, so that the thickness of the glue applied to the film is also different, resulting in insufficient contact between the film and the gypsum board when the film is laminated, and a large amount of glue overflows when the film is pressed for lamination, affecting the molding quality of the gypsum board. Summary of the invention

[0004] The purpose of the present invention is to provide a hot melt adhesive coating device for coating, which solves the problem that the existing gypsum board cannot effectively control the amount of glue discharged from each part when coating the glue through the slender glue outlet on the horizontal scraper, resulting in inconsistent amount of glue applied on the film and affecting the molding quality of the gypsum board.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0006] A hot melt adhesive coating device for coating, specifically comprising:

[0007] A heat-insulating glue storage device, used to be connected to the outlet of the hot melt machine to receive glue and store it in a heat-insulating manner;

[0008] A rotating distribution device is arranged on the heat-insulating glue storage device, and circulates and infiltrates the heat-insulating glue storage device by rotating, and replenishes and receives the glue in the heat-insulating glue storage device before the position in contact with the membrane, and scrapes off the glue on the surface exceeding a preset thickness by rotating;

[0009] The circulating bearing device is connected with the heat-insulating glue storage device and continuously bears the film to form a plane in contact with the rotating distribution device for glue coating, and the rotating bearing device moves synchronously with the film when bearing the film.

[0010] As a preferred embodiment of the present invention, the heat-insulating glue storage device includes a frame, on which there is an open box with an open top and filled with glue. A supplementary glue tank filled with glue is arranged on the open box. The bottom of the supplementary glue tank is provided with a glue outlet controlled by a valve to open and close. Heat-insulating layers are arranged inside both the open box and the supplementary glue tank;

[0011] Wherein, the open box covers the outer side of the rotary distribution device that is lower than the height of the rotation center of the rotary distribution device, and the supplementary glue tank covers the outer side of the rotary distribution device that is higher than the height of the rotation center of the rotary distribution device.

[0012] As a preferred embodiment of the present invention, heating plates are arranged on the outer walls of both the open box and the supplementary glue tank.

[0013] As a preferred embodiment of the present invention, the rotary distribution device includes a glue-brushing roller rotatably arranged on the inner side wall of the open box and a feeding pipe communicated with the glue outlet. A lifting device is arranged on the outer wall of the feeding pipe, and the end of the lifting device is connected with a scraping pipe slidably sleeved on the outer wall of the feeding pipe. The end of the scraping pipe is provided with an arc-shaped opening that matches the surface shape of the glue-brushing roller and is used for scraping off the excess glue on the surface of the glue-brushing roller;

[0014] Wherein, both the feeding pipe and the scraping pipe are arranged vertically and are located on the side of the vertical center line of the glue-brushing roller that is closer to the side where the glue-brushing roller contacts the film, and the straight line where the center of the arc of the arc-shaped opening is located coincides with the rotation center of the glue-brushing roller.

[0015] As a preferred embodiment of the present invention, two external connection plates are symmetrically arranged on the scraping pipe with respect to the radial cross-section at the center of the glue-brushing roller. Each external connection plate is provided with a scraping plate that slidably contacts both ends of the glue-brushing roller and is used for scraping off the glue that overflows outside the glue-brushing roller.

[0016] As a preferred embodiment of the present invention, the scraping plate includes a straight plate part and a curved plate part. The straight plate part is connected to the external connection plate, and the curved plate part is connected to one side of the straight plate part and extends obliquely downward around the rotation center of the glue-brushing roller, and the inclination direction is away from the position where the glue-brushing roller contacts the film.

[0017] As a preferred embodiment of the present invention, the straight plate part is rotatably connected to the external connection plate through a torsion spring, and a limit stop block is arranged on the external connection plate. The straight plate part contacts the limit stop block under the elastic force of the torsion spring.

[0018] As a preferred embodiment of the present invention, an arc-shaped groove is provided on one side of the curved panel portion facing the supplementary glue water tank, and one side of the arc-shaped groove extends to the side of the curved panel portion in contact with the glue brushing roller.

[0019] As a preferred embodiment of the present invention, the circulating carrying device includes two linear motion structures arranged on the frame and having the same running direction. A connecting seat is arranged on each linear motion structure, a telescopic device moving in a direction perpendicular to the film is arranged on each connecting seat, and a carrying plate for alternately carrying the film is arranged at the end of each telescopic device;

[0020] Wherein, the distance between the two linear motion structures in a direction perpendicular to the motion direction and the length of the carrying plate are both greater than the width of the film, and the motion direction of the linear motion structure is parallel to the motion direction of the film.

[0021] As a preferred embodiment of the present invention, an elastic pad for contacting the film is provided on the surface of the carrying plate.

[0022] The present invention has the following beneficial effects compared with the prior art:

[0023] In the present invention, the rotation distribution device rotates to circulate and soak in the glue in the heat preservation glue storage device, and supplementary glue is provided to avoid excessive shedding of the glue during rotation, which affects the glue brushing effect. Moreover, by scraping off the glue exceeding the preset thickness, the amount of glue brushed when the rotation distribution device contacts the film is controlled, the uniformity of glue distribution during glue brushing is improved, and thus the forming quality of the gypsum board is improved. And the circulating carrying device carries the film to contact the rotation distribution device, ensuring effective contact between the film and the rotation distribution device so that the glue and the film are effectively contacted, further improving the glue brushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extending according to the provided drawings without creative efforts.

[0025] Figure 1 FIG. is a schematic side cross-sectional structure diagram of a hot melt adhesive brushing device for film laminating provided by an embodiment of the present invention;

[0026] Figure 2 FIG. is a partial side structure diagram of a hot melt adhesive brushing device for film laminating provided by an embodiment of the present invention;

[0027] Figure 3This is a schematic structural diagram of the squeegee provided by the embodiment of the present invention.

[0028] The reference numerals in the figure are respectively represented as follows:

[0029] 1 - Thermal insulation glue storage device; 2 - Rotating distribution device; 3 - Circulating bearing device;

[0030] 101 - Frame; 102 - Open box; 103 - Supplementary glue water tank; 104 - Glue outlet; 105 - Thermal insulation layer; 106 - Heating plate;

[0031] 201 - Glue brushing roller; 202 - Feeding pipe; 203 - Lifting device; 204 - Scraping pipe; 205 - Arc-shaped opening; 206 - External connecting plate; 207 - Squeegee; 208 - Straight plate part; 209 - Curved panel part; 210 - Limit stop block; 211 - Arc-shaped groove;

[0032] 301 - Linear motion structure; 302 - Connecting seat; 303 - Telescopic device; 304 - Bearing plate; 305 - Elastic pad. Specific embodiments

[0033] 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.

[0034] As Figures 1 to 3 shown, the present invention provides a hot melt adhesive brushing device for film laminating, specifically including:

[0035] A thermal insulation glue storage device 1, which is used to connect with the outlet of the hot melt machine to receive the glue and store it in a heat-insulated manner.

[0036] A rotating distribution device 2, which is arranged on the thermal insulation glue storage device 1 and circulates and infiltrates in the thermal insulation glue storage device 1 by rotation, and receives the glue in the thermal insulation glue storage device 1 before the position in contact with the film and scrapes off the glue on the surface exceeding the preset thickness by rotation.

[0037] A circulating bearing device 3, which is connected with the thermal insulation glue storage device 1 and continuously bears the film to form a plane in contact with the rotating distribution device 2 for glue coating, and the rotating bearing device 3 moves synchronously with the film when bearing the film.

[0038] When the present invention is in use, after the solid glue is melted in the hot melt machine, it is received and stored in a heat-insulated manner by the thermal insulation glue storage device 1 to prevent the glue from solidifying again.

[0039] Part of the rotation distribution device 2 is always immersed in the glue in the heat preservation glue storage device 1, and through rotation, it circulates into the glue in the heat preservation glue storage device 1 by itself for immersion so as to be coated with glue, ensuring the effectiveness of the rotation distribution device 2 in brushing glue on the film.

[0040] Secondly, before the rotation distribution device 2 contacts the film for brushing glue, it replenishes glue through the heat preservation glue storage device 1 again, avoiding excessive shedding of the glue on the surface of the rotation distribution device 2 under the action of centrifugal force during rotation, which affects the brushing glue effect.

[0041] And by scraping, the glue exceeding the preset thickness is removed, so as to ensure that the thickness of the glue on the surface of the rotation distribution device 2 is as consistent as possible before contacting the film, enabling the glue obtained by each part of the film during brushing to be maximally consistent, avoiding the problem that the inconsistent glue application amount leads to ineffective adhesion to the surface of the gypsum board, and avoiding the problem that excessive glue overflows after the film is pressed onto the surface of the gypsum board, which affects the forming quality.

[0042] The circulation carrier device 3 is used to carry the film to provide a support plane, enabling the rotation distribution device 2 to have sufficient support force when contacting the film for brushing glue, and avoiding the occurrence of a brushing glue gap between the film and the rotation distribution device 2 during brushing glue, which affects the brushing glue effect.

[0043] The heat preservation glue storage device 1 includes a frame 101, on which an open box 102 with an open top and filled with glue is provided. A supplementary glue tank 103 filled with glue is provided on the open box 102. A glue outlet 104 controlled by a valve is provided at the bottom of the supplementary glue tank 103. Heat preservation layers 105 are provided inside both the open box 102 and the supplementary glue tank 103.

[0044] Among them, the open box 102 is covered on the outside of the rotation distribution device 2 at a height less than the rotation center height of the rotation distribution device 2, and the supplementary glue tank 103 is covered on the outside of the rotation distribution device 2 at a height greater than the rotation center height of the rotation distribution device 2.

[0045] When the heat preservation glue storage device 1 is in use, the frame 101 is used to provide support. Both the open box 102 and the supplementary glue tank 103 are used to hold glue and are heat-preserved through the heat preservation layer 105, avoiding the glue from solidifying due to temperature drop and affecting the normal progress of the brushing glue process.

[0046] The open box 102 has an open top so that the lower part below the rotation center of the rotation distribution device 2 is immersed in the glue in the open box 102, ensuring that the surface of the rotation distribution device 2 is fully coated with glue to brush the film.

[0047] The glue outlet 104 is connected to the rotating distribution device 2 to replenish glue before the rotating distribution device 2 contacts the film, thereby preventing the glue on the surface of the rotating distribution device 2 from being separated due to rotation and affecting the glue brushing effect on the film.

[0048] Heating plates 106 are provided on the outer walls of the open box 102 and the glue replenishing box 103 .

[0049] The heating plate 106 is provided to provide heat, thereby further preventing the glue from solidifying and ensuring the normal progress of the glue application process.

[0050] The rotating distribution device 2 includes a glue brush roller 201 rotatably arranged on the inner wall of the open box 102 and a feed pipe 202 connected to the glue outlet 104, a lifting device 203 is arranged on the outer wall of the feed pipe 202, and the end of the lifting device 203 is connected to a scraper tube 204 which is slidably sleeved with the outer wall of the feed pipe 202, and the end of the scraper tube 204 is provided with an arc-shaped opening 205 which matches the surface shape of the glue brush roller 201 and is used to scrape off excess glue on the surface of the glue brush roller 201.

[0051] Among them, the feeding pipe 202 and the scraper pipe 204 are both arranged in the vertical direction and are located on the side where the center line of the rubber brush roller 201 in the vertical direction is biased towards the contact between the rubber brush roller 201 and the film, and the straight line where the arc center of the arc-shaped opening 205 is located coincides with the rotation center of the rubber brush roller 201.

[0052] When the rotary distribution device 2 is in use, the glue brush roller 201 is driven to rotate by a driving device such as a motor, so that a part of the glue brush roller 201 circulates in the open box 102 to ensure that the surface is fully coated with glue.

[0053] At the same time, the glue in the glue box 103 is replenished through the feed pipe 202 and released to the surface of the glue brush roller 201 through the arc-shaped opening 205 of the scraper tube 204, and the rotation of the glue brush roller 201 makes the surface of the glue brush roller 201 move relative to the arc-shaped opening 205, so that the glue exceeding the preset thickness is scraped off through the arc-shaped opening 205, and the glue on the surface of the glue brush roller 201 is subsequently roughly the same, so that the thickness of the film coated when it contacts the glue brush roller 201 is roughly the same, thereby improving the uniformity of the glue brushing, avoiding the problem of inconsistent glue application amount resulting in ineffective bonding between the film and the gypsum board surface, and avoiding the problem of excessive glue overflow after the film is pressed to the gypsum board surface, affecting the molding quality.

[0054] Secondly, the scraper tube 204 is driven to move along the axial direction by the lifting device 203, so that the distance between the arc-shaped mouth 205 and the surface of the glue brush roller 201 can be adjusted, thereby adjusting and controlling the thickness of the glue attached to the surface of the glue brush roller 201 to meet different production needs.

[0055] Moreover, the glue scraping pipe 204 is located on the side of the glue brushing roller 201 where the vertical center line of the glue brushing roller 201 deviates towards the glue brushing side, so that the position where the arc-shaped opening 205 controls the glue thickness by scraping the glue on the glue brushing roller 201 is as close as possible to the position where the glue brushing roller 201 brushes the film, thereby minimizing the change in the thickness of the glue adhering to the surface of the glue brushing roller 201, further improving the uniformity when brushing the film with glue, and further improving the forming quality of the gypsum board.

[0056] In this embodiment, the lifting device 203 is a mechanical structure or device such as a hydraulic push rod or an electric push rod that can move in a straight line.

[0057] In this embodiment, the length of the glue brushing roller 201 is greater than the width of the film to ensure effective and sufficient glue brushing on the film.

[0058] Two external connecting plates 206 are symmetrically arranged on the radial cross-section of the glue scraping pipe 204 at the center of the glue brushing roller 201. Each external connecting plate 206 is provided with a scraper 207 that slidably contacts both ends of the glue brushing roller 201 to scrape off the glue that overflows outside the glue brushing roller 201.

[0059] By connecting the scraper 207 through the external connecting plate 206, the scraper 207 slidably contacts both ends of the glue brushing roller 201, thereby scraping off the glue that overflows above the horizontal axial cross-section at both ends of the glue brushing roller 201, and preventing the solidification of the overflowing glue from affecting the distribution of the glue.

[0060] The scraper 207 includes a straight plate portion 208 and a curved plate portion 209. The straight plate portion 208 is connected to the external connecting plate 206, and the curved plate portion 209 is connected to one side of the straight plate portion 208 and extends obliquely downward around the rotation center of the glue brushing roller 201, and the inclination direction is away from the position where the glue brushing roller 201 contacts the film.

[0061] The straight plate portion 207 slidably contacts both ends of the glue brushing roller 201 to directly scrape off the glue that overflows from the glue brushing roller 201, and the scraped glue is guided by the curved plate portion 209 to slide into the open-top box 102, avoiding the problem that the glue solidifies after sliding to the rotation connection between the glue brushing roller 201 and the inner wall of the open-top box 201 and affecting the normal rotation of the glue brushing roller 201.

[0062] The straight plate portion 208 is rotatably connected to the external connecting plate 206 through a torsion spring, and a limit stop block 210 is arranged on the external connecting plate 206. The straight plate portion 208 contacts the limit stop block 210 under the elastic force of the torsion spring.

[0063] That is, the straight plate portion 208 can rotate. When the straight plate portion 208 and the curved plate portion 209 scrape off the glue that overflows from the glue brushing roller 201, if the straight plate portion 208 and the curved plate portion 209 rub against each other during the sliding contact with the end of the glue brushing roller 201, this will hinder the normal rotation of the glue brushing roller 201.

[0064] The straight plate part 208 is rotationally connected to the external plate 206. At this time, it can drive the straight plate part 208 and the curved plate part 209 to rotate and compress the torsion spring, so that the straight plate part 208 has a certain buffer. After being able to slide with the end of the glue application roller 201, the straight plate part 208 and the curved plate part 209 can automatically reset under the elastic force of the torsion spring, improving the practicability.

[0065] Moreover, through the arranged limit stop block 210, when the straight plate part 208 normally scrapes the glue at the end of the glue application roller 201, it remains in contact with the limit stop block 210 through the elastic force of the torsion spring, avoiding the rotation of the straight plate part 208 under a small resistance and ensuring the effective scraping of the glue.

[0066] An arc-shaped groove 211 is arranged on one side of the curved plate part 209 facing the supplementary glue water tank 103, and one side of the arc-shaped groove 211 extends to the side where the curved plate part 209 contacts the glue application roller 201.

[0067] Through the arranged arc-shaped groove 211, when the curved plate part 209 scrapes the glue, it guides the glue to slide down at the same time and restricts the glue from sliding down along the axial direction of the glue application roller 201, avoiding the problem that the glue slides to the connection part between the glue application roller 201 and the open box 102 and solidifies, affecting the normal rotation of the glue application roller 201.

[0068] The circulating loading device 3 includes two linear motion structures 301 arranged on the frame 101 and having the same running direction. A connecting seat 302 is arranged on each linear motion structure 301, a telescopic device 303 moving in a direction perpendicular to the film is arranged on each connecting seat 302, and a loading plate 304 for alternately loading the film is arranged at the end of each telescopic device 303.

[0069] Wherein, the distance between the two linear motion structures 301 in a direction perpendicular to the motion direction and the length of the loading plate 304 are both greater than the width of the film, and the motion direction of the linear motion structure 301 is parallel to the motion direction of the film.

[0070] When the circulating loading device 3 is in use, the two linear motion structures 301 drive the two connecting seats 302 to move in a direction parallel to the motion direction of the film, so that when one loading plate 304 is driven by the telescopic device 303 to contact the film, the other loading plate 304 moves away from the film under the drive of the telescopic device 303 and moves in the opposite direction to the loading plate 304 contacting the film under the drive of the linear motion structure 301.

[0071] When this carrier plate 304 moves in the reverse direction to the edge of another carrier plate 304 that contacts the film, the telescopic device 304 drives this carrier plate 304 to contact the film again and contact the edge of the previous carrier plate 304. At this time, this carrier plate 304 is located at the rear position of the previous carrier plate 304 in the moving direction.

[0072] Then, the telescopic device 303 drives the aforementioned carrier plate 304 to disengage from the film and repeats the above actions, so that the film is always carried by the carrier plate 304, so that the film has sufficient support to maintain effective contact with the glue brushing roller 201, and avoid the contact gap between the glue brushing roller 201 and the film from affecting the glue brushing effect.

[0073] An elastic pad 305 for contacting the film is provided on the surface of the carrier plate 304.

[0074] By contacting the film through the provided elastic pad 305, the film has a buffering effect and undergoes a slight deformation when being brushed with glue by the glue brushing roller 201, thereby increasing the contact area between the film and the glue brushing roller 201, and then improving the glue brushing effect.

[0075] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A film-coated hot melt adhesive brushing device, characterized in that Specifically include: A heat-insulating glue storage device (1), which is used to connect to the outlet of a hot melt machine to receive glue and store it while keeping it warm; A rotating distribution device (2), which is arranged on the heat-insulating glue storage device (1), circulates and soaks in the heat-insulating glue storage device (1) by rotating, supplements and receives the glue in the heat-insulating glue storage device (1) before the position of contacting the film, and scrapes off the glue with a surface thickness exceeding a preset thickness by rotating; A circulating carrying device (3), which is connected to the heat-insulating glue storage device (1), continuously carries a film to form a plane to contact the rotating distribution device (2) for glue coating, and the circulating carrying device (3) moves synchronously with the film when carrying the film; The heat-insulating glue storage device (1) includes a frame (101), an open-top box (102) filled with glue is arranged on the frame (101), a supplementary glue tank (103) filled with glue is arranged on the open-top box (102), a glue outlet (104) controlled to open and close by a valve is arranged at the bottom of the supplementary glue tank (103), and heat-insulating layers (105) are arranged inside both the open-top box (102) and the supplementary glue tank (103); Among them, the open-top box (102) is wrapped outside the rotating distribution device (2) with a height less than the rotation center height of the rotating distribution device (2), and the supplementary glue tank (103) is wrapped outside the rotating distribution device (2) with a height greater than the rotation center height of the rotating distribution device (2); The rotating distribution device (2) includes a glue-brushing roller (201) rotatably arranged on the inner side wall of the open-top box (102) and a blanking pipe (202) communicated with the glue outlet (104). A lifting device (203) is arranged on the outer wall of the blanking pipe (202), a scraping pipe (204) slidably sleeved on the outer wall of the blanking pipe (202) is connected to the end of the lifting device (203), and an arc-shaped opening (205) which is matched with the surface shape of the glue-brushing roller (201) and is used for scraping off the redundant glue on the surface of the glue-brushing roller (201) is arranged at the end of the scraping pipe (204); Among them, the blanking pipe (202) and the scraping pipe (204) are both arranged in the vertical direction and are located on the side of the vertical center line of the glue-brushing roller (201) deviating from the side where the glue-brushing roller (201) contacts the film, and the straight line where the arc center of the arc-shaped opening (205) is located coincides with the rotation center of the glue-brushing roller (201).

2. The hot melt adhesive brushing device with a film coating according to claim 1, wherein Heating plates (106) are arranged on the outer walls of both the open-top box (102) and the supplementary glue tank (103).

3. A hot melt adhesive brushing device with a film coating, characterized in that, Two external connection plates (206) are symmetrically arranged on the scraping pipe (204) with respect to the radial cross-section at the center of the glue-brushing roller (201), and a scraping plate (207) which is in sliding contact with both ends of the glue-brushing roller (201) and is used for scraping off the glue overflowing outside the glue-brushing roller (201) is arranged on each external connection plate (206).

4. A hot melt adhesive brushing device with film coating according to claim 3, characterized in that, The squeegee (207) includes a straight plate portion (208) and a curved plate portion (209). The straight plate portion (208) is connected to the external plate (206). The curved plate portion (209) is connected to one side of the straight plate portion (208) and extends obliquely downward around the rotation center of the glue application roller (201), and the oblique direction is away from the position where the glue application roller (201) contacts the film.

5. A hot melt adhesive brushing device with a film coating, characterized in that, The straight plate portion (208) is rotatably connected to the external plate (206) through a torsion spring, and a limit stop block (210) is provided on the external plate (206). The straight plate portion (208) contacts the limit stop block (210) under the elastic force of the torsion spring.

6. The hot melt adhesive brushing device with a film coating according to claim 4, characterized in that, An arc-shaped groove (211) is provided on one side of the curved plate portion (209) facing the supplementary glue water tank (103), and one side of the arc-shaped groove (211) extends to the side where the curved plate portion (209) contacts the glue application roller (201).

7. A hot melt adhesive brushing device with a film coating, characterized in that, The circulating carrier device (3) includes two linear motion structures (301) provided on the frame (101) and having the same running direction. A connecting seat (302) is provided on each linear motion structure (301). A telescopic device (303) that moves in a direction perpendicular to the film is provided on each connecting seat (302). A carrier plate (304) for alternately carrying the film is provided at the end of each telescopic device (303); Among them, the distance between the two linear motion structures (301) in a direction perpendicular to the moving direction and the length of the carrier plate (304) are both greater than the width of the film, and the moving direction of the linear motion structure (301) is parallel to the moving direction of the film.

8. A hot melt adhesive brushing device with a film coating, characterized in that, An elastic pad (305) for contacting the film is provided on the surface of the carrier plate (304).

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