Pre-coating film adhesive layer laminating device and production process thereof

Abstract

The present invention belongs to the technical field of pre-coating film glue coating, and relates to a pre-coating film glue layer laminating device and its production process, including a conveyor belt, a laminating mechanism, a glue feeding mechanism and an adjusting mechanism, the laminating mechanism includes a support tube and a columnar airbag, the two ends of the support tube are respectively connected with an air inlet pipe and an exhaust pipe, the air inlet pipe and the exhaust pipe are connected to the columnar airbag; the glue feeding mechanism includes a glue preparation box and a glue transfer roller, the glue transfer roller is mounted above the columnar airbag, and a glue outlet is opened at the bottom of the glue preparation box; the adjusting mechanism includes a limit tube slidably sleeved on both ends of the columnar airbag. The air inlet pipe inflates into the support tube and enters the columnar airbag, so that the middle section of the columnar airbag bulges, the glue feeding mechanism covers the glue liquid on the columnar airbag, the columnar airbag presses the glue layer on the pre-coating film, and the limit tube blocks the two ends of the columnar airbag for a distance, so that the unblocked length of the middle section of the columnar airbag is equal to the width of the pre-coating film, and then the length of the expanded part of the columnar airbag is the same as the width of the pre-coating film.

Description

Technical Field

[0001] The invention relates to the technical field of pre-coating film glue coating, in particular to a pre-coating film glue layer laminating device and a production process thereof. Background Art

[0002] Pre-coating refers to the process of pre-gluing and rewinding plastic film and then compounding it with paper printed products. The pre-coating factory first applies glue on the film according to the specifications and format, then rewinds it for the user to choose, and then compounds it with the printed product. Laminating is to coat the plastic film with adhesive, and then heat and pressurize it to bond it with the paper printed product to form a paper-plastic integrated product. The laminated printed product has a smoother and brighter surface due to the extra layer of thin and transparent plastic film, thereby improving the gloss and fastness of the printed product. The existing pre-coating glue coating device for pre-coating production does not cover the glue layer evenly, and the edge glue layer is easy to overflow during spraying, affecting the production quality of the pre-coating film.

[0003] The patent with authorization announcement number CN215465742U discloses a pre-coating film gluing device, including a coating roller, whose axis is arranged horizontally and whose top is in contact with the bottom of the film; a pressure roller, which is arranged above the coating roller, and the film is pressed between the coating roller and the pressure roller; a circulation box, whose top is open and the bottom of the coating roller extends into the circulation box; a receiving box, which contains glue; a spray pipe, which is located in the circulation box and directly below the coating roller, and has a plurality of nozzles on the top for spraying glue to the coating roller; a circulation pipe, which is used to send the glue that falls into the circulation box into the receiving box; a glue inlet pipe, which is used to send the glue in the receiving box into the spray pipe; and a scraper, which is arranged on one side of the coating roller; the glue is always in a circulating state, and there is no glue accumulation in the circulation box. However, this patent still has some shortcomings: it is difficult to change the length of the coating roller when using a traditional coating roller for lamination; when the pre-coated film is narrow, the excess adhesive layer on the coating roller easily overflows to the outside of the pre-coated film; when the pre-coated film is wide, the coating roller cannot cover the entire pre-coated film. Therefore, traditional coating rollers are difficult to adapt to the production needs of pre-coated films of different widths. Summary of the invention

[0004] In order to solve the problem that it is difficult to cover adhesive layers on pre-coated films of different widths, the present invention provides a pre-coated film adhesive layer laminating device and a production process thereof.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a pre-coated film glue layer laminating device, including a conveyor belt for conveying pre-coated film, and also including a laminating mechanism, a glue feeding mechanism and an adjusting mechanism. The laminating mechanism includes a support tube with a hollow interior, the support tube is mounted above the conveyor belt, the surface of the support tube is covered with a columnar airbag, a plurality of air outlet holes are evenly distributed on the tube wall of the support tube, the two ends of the support tube are respectively connected to an air inlet pipe and an exhaust pipe, the air inlet pipe and the exhaust pipe are connected to the columnar airbag through the air outlet holes, and the columnar airbag can expand to after inflation. Fitting with the surface of the pre-coated film; the glue feeding mechanism includes a glue preparation box and a glue transfer roller, the glue transfer roller is mounted above the cylindrical airbag, and when the cylindrical airbag is inflated, the surface of the glue transfer roller can abut against the surface of the cylindrical airbag, and a glue outlet is provided at the bottom of the glue preparation box, and the glue outlet abuts against the surface of the glue transfer roller, and the glue preparation box is used to press a glue layer onto the surface of the glue transfer roller; the adjustment mechanism includes a limiting cylinder slidably mounted at both ends of the cylindrical airbag, and the diameter of the limiting cylinder is smaller than the diameter of the cylindrical airbag after expansion.

[0006] Preferably, the adjustment mechanism also includes a base, a worm gear mechanism, a guide rod and a sliding plate. The worm gear mechanism is rotatably mounted on the base, the top of the sliding plate is fixedly connected to the end of the limiting cylinder away from the cylindrical airbag, the bottom of the sliding plate is slidably connected to the guide rod, the guide rod is horizontally fixed on the base, the axis of the guide rod is parallel to the axis of the support cylinder, the worm wheel of the worm gear mechanism is threadedly connected to the middle part of the sliding plate through a screw, and the worm gear mechanism drives the limiting cylinder to move through the sliding plate.

[0007] Preferably, the laminating mechanism also includes a main shaft, a bracket, a fixed disk and a sealing cover, the two ends of the support tube are coaxially fixedly connected to the main shaft through the fixed disk, the sealing cover is rotatably sleeved on the two ends of the support tube, the sealing cover is used to seal the two ends of the support tube, the air intake pipe and the exhaust pipe are connected to the interior of the support tube through the sealing cover, and the main shaft passes through the sealing cover and is slidably connected to the sealing cover.

[0008] Preferably, a wear-resistant ring is rotatably mounted on one end of the limiting cylinder close to the middle of the cylindrical airbag, and when the cylindrical airbag is inflated, the end of the wear-resistant ring can be pressed against the edge of the inflated position of the cylindrical airbag.

[0009] Preferably, a glue feed pipe and a plurality of nozzles are fixed in the glue preparation box, the glue feed pipe is horizontally fixed in the middle of the glue preparation box, the outer wall of the glue preparation box is fixedly connected to the bracket, the glue feed pipe is connected to the glue pipeline, and the plurality of nozzles are arranged at equal intervals at the bottom of the glue feed pipe and are connected to the glue feed pipe, and the nozzles are set toward the glue outlet at the bottom of the glue preparation box.

[0010] Preferably, a heating wire is fixed inside the transfer roller.

[0011] Preferably, a heating cylinder is installed at the inlet end of the air intake pipe, and the heating cylinder is used to heat the air transported by the air intake pipe.

[0012] The production process of pre-coating film adhesive layer lamination adopts the above-mentioned pre-coating film adhesive layer lamination device, comprising the following steps: S1, loading, placing the pre-coating film to be processed on a conveyor belt, and driving the pre-coating film to move by the conveyor belt;

[0013] S2, prepare glue, put the glue layer raw materials into the glue preparation box, so as to facilitate the subsequent pressing of the glue layer on the pre-coated film;

[0014] S3, limit adjustment, adjusting the length of the columnar airbag through the adjustment mechanism so that the length of the columnar airbag is equal to the width of the pre-coating film;

[0015] S4, glue layer processing, the conveyor belt transports the pre-coated film to the bottom of the columnar airbag, and the glue in the glue preparation box is pressed tightly onto the pre-coated film through the columnar airbag to form a glue layer.

[0016] The beneficial effects of the present invention are:

[0017] A laminating mechanism and an adjusting mechanism are provided, and air is inflated into the supporting tube of the laminating mechanism through an air inlet pipe, and the gas in the supporting tube enters the columnar airbag from the air outlet, so that the middle section of the columnar airbag bulges and fits onto the surface of the pre-coated film, and the glue liquid is covered on the columnar airbag through the glue feeding mechanism, and finally the glue is pressed onto the surface of the pre-coated film through the columnar airbag. The limiting tube of the adjusting mechanism blocks the two ends of the columnar airbag for a distance, so that the unblocked length of the middle section of the columnar airbag is equal to the width of the pre-coated film, and then gas is inflated into the supporting tube and the columnar airbag through the air inlet pipe to expand the columnar airbag. At this time, the two ends of the columnar airbag cannot expand because they are blocked by the limiting tube, so that only the unblocked part of the columnar airbag can expand to contact with the surface of the pre-coated film, and then the length of the expanded part of the columnar airbag is the same as the width of the pre-coated film, so as to press the glue on the columnar airbag onto the pre-coated film and prevent the glue layer from overflowing from the side of the pre-coated film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the worm gear mechanism of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the cylindrical airbag of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the sealing cover of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the support tube of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the fixed disk of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the glue transfer roller of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the rubber delivery hose of the present invention.

[0027] Figure numerals: 1. pre-coating film; 2. conveyor belt; 3. laminating mechanism; 4. glue feeding mechanism; 5. adjusting mechanism; 6. supporting cylinder; 7. cylindrical air bag; 8. air inlet pipe; 9. exhaust pipe; 10. glue preparation box; 11. glue transfer roller; 12. glue outlet; 13. limiting cylinder; 14. base; 15. worm gear mechanism; 16. guide rod; 17. sliding plate; 18. main shaft; 19. bracket; 20. fixed plate; 21. sealing cover; 22. wear-resistant ring; 23. glue feeding hose; 24. nozzle; 25. glue pipeline; 26. heating cylinder. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] like Figures 1 to 8As shown, the present invention provides an embodiment of a pre-coated film adhesive layer laminating device, comprising a conveyor belt 2 for conveying a pre-coated film 1, and also comprising a laminating mechanism 3, a glue feeding mechanism 4 and an adjusting mechanism 5. The laminating mechanism 3 comprises a support tube 6 with a hollow interior, the support tube 6 is mounted above the conveyor belt 2, the surface of the support tube 6 is covered with a columnar air bag 7, a plurality of air outlet holes are evenly distributed on the tube wall of the support tube 6, the two ends of the support tube 6 are respectively connected with an air inlet pipe 8 and an exhaust pipe 9, the air inlet pipe 8 and the exhaust pipe 9 are connected to the columnar air bag 7 through the air outlet holes, when the pre-coated film 1 is pressed with the adhesive layer, firstly, air is inflated into the support tube 6 through the air inlet pipe 8, and the gas in the support tube 6 enters from the air outlet holes The cylindrical airbag 7 is inserted into the cylindrical airbag 7, so that the middle section of the cylindrical airbag 7 bulges and fits on the surface of the pre-coated film 1, while the two ends of the cylindrical airbag 7 are still in contact with and pressed on the support tube 6, so that the support tube 6 can drive the cylindrical airbag 7 to rotate, and the position of the cylindrical airbag 7 can also be limited by the support tube 6 to prevent the cylindrical airbag 7 from shifting during use. The glue liquid is covered on the cylindrical airbag 7 through the glue feeding mechanism 4, and finally the glue is pressed onto the surface of the pre-coated film 1 through the cylindrical airbag 7. The cylindrical airbag 7 directly contacts the surface of the pre-coated film 1 for covering, and the glue layer can also be evenly distributed on the surface of the pre-coated film 1 to prevent the glue layer from being pressed too thickly.

[0030] The laminating mechanism 3 also includes a main shaft 18, a bracket 19, a fixed disk 20 and a sealing cover 21. The two ends of the support tube 6 are coaxially fixedly connected to the main shaft 18 through the fixed disk 20. The sealing cover 21 is rotatably sleeved on the two ends of the support tube 6. The sealing cover 21 is used to seal the two ends of the support tube 6. The air inlet pipe 8 and the exhaust pipe 9 are connected to the interior of the support tube 6 through the sealing cover 21. The main shaft 18 passes through the sealing cover 21 and is slidably connected to the sealing cover 21. The main shaft 18 is driven to rotate by a motor. When the main shaft 18 rotates, it will drive the support tube 6 to rotate through the fixed disk 20, while the sealing cover 21 and the air inlet pipe 8 and the exhaust pipe 9 connected to the sealing cover 21 will not rotate with the main shaft 18, so that the columnar airbag 7 can be smoothly inflated and deflated. The rotation of the support tube 6 can drive the columnar airbag 7 to rotate, thereby completing the pressing action of the glue liquid.

[0031] The glue feeding mechanism 4 includes a glue preparation box 10 and a glue transfer roller 11. The glue transfer roller 11 is mounted above the columnar airbag 7. When the columnar airbag 7 is inflated, the surface of the glue transfer roller 11 can abut against the surface of the columnar airbag 7. A glue outlet 12 is provided at the bottom of the glue preparation box 10. The glue outlet 12 abuts against the surface of the glue transfer roller 11 so that the glue can cover the glue transfer roller 11 from the glue outlet 12. A glue feeding pipe 23 and a plurality of nozzles 24 are also fixed in the glue preparation box 10. The glue feeding pipe 23 is horizontally fixed in the middle of the glue preparation box 10. The outer wall of the glue preparation box 10 is fixedly connected to the bracket 19. The glue feeding pipe 23 A glue pipeline 25 is connected to the top, and multiple nozzles 24 are arranged at equal intervals at the bottom of the glue feeding pipe 23 and are connected to the glue feeding pipe 23. The nozzles 24 are set toward the glue outlet 12 at the bottom of the glue preparation box 10. The glue is covered on the glue transfer roller 11 through the nozzles 24. The nozzles 24 are set in the glue preparation box 10. On the one hand, it can prevent the glue from splashing and wasting. On the other hand, the excess glue can also be temporarily stored in the glue preparation box 10, and then covered on the glue transfer roller 11 from the glue outlet 12 at the bottom of the glue preparation box 10 to avoid glue waste. At the same time, the glue is temporarily stored in the glue preparation box 10, which can also prevent the glue from coagulating quickly.

[0032] A heating wire is fixed inside the glue transfer roller 11, and the glue transfer roller 11 is heated by the heating wire. After the glue is adsorbed on the surface of the glue transfer roller 11, the heated glue transfer roller 11 can prevent the glue on its surface from cooling and condensing, so as to improve the fluidity of the glue and facilitate covering the columnar airbag 7 with the glue. A heating cylinder 26 is also installed at the inlet end of the air inlet pipe 8. The heating cylinder 26 is used to heat the air transported by the air inlet pipe 8 so as to heat the columnar airbag 7 and prevent the glue on the surface of the columnar airbag 7 from cooling and condensing, so as to evenly press the glue layer onto the surface of the pre-coated film 1.

[0033] The adjusting mechanism 5 comprises a limiting tube 13 slidably mounted on both ends of the cylindrical airbag 7 , and the diameter of the limiting tube 13 is smaller than the diameter of the cylindrical airbag 7 after expansion. The adjusting mechanism 5 also includes a base 14, a worm gear mechanism 15, a guide rod 16 and a sliding plate 17. The worm gear mechanism 15 is rotatably installed on the base 14. The top of the sliding plate 17 is fixedly connected to the end of the limiting cylinder 13 away from the cylindrical airbag 7. The bottom of the sliding plate 17 is slidably connected to the guide rod 16. The guide rod 16 is horizontally fixed on the base 14. The axis of the guide rod 16 remains parallel to the axis of the supporting cylinder 6. The worm wheel of the worm gear mechanism 15 is threadedly connected to the middle part of the sliding plate 17 through a screw rod, and the screw rod has two opposite threads. The adjusting mechanism 5 is provided with two sliding plates 17, and the two sliding plates 17 are respectively threadedly connected to the two opposite threads on the screw rod in a one-to-one correspondence. When the worm gear mechanism 15 drives the limiting cylinder 13 to move through the sliding plate 17, the limiting cylinders 13 located at both ends of the cylindrical airbag 7 can be moved closer to or away from each other.

[0034] The working principle of the adjustment mechanism 5 is as follows: before the pre-coated film 1 is pressed, the worm gear is rotated to move the sliding plate 17 along the guide rod 16. When the sliding plate 17 moves, it can drive the limiting cylinders 13 at both ends of the columnar airbag 7 to move closer to or farther away from each other, and the two ends of the columnar airbag 7 are blocked by the limiting cylinder 13 for a distance, so that the unblocked length of the middle section of the columnar airbag 7 is equal to the width of the pre-coated film 1, and then gas is filled into the support cylinder 6 and the columnar airbag 7 through the air inlet pipe 8 to expand the columnar airbag 7. At this time, the two ends of the columnar airbag 7 are blocked by the limiting cylinder 13 and therefore cannot expand, so that only the unblocked part of the columnar airbag 7 can expand to contact the surface of the pre-coated film 1, and then the length of the expanded part of the columnar airbag 7 is the same as the width of the pre-coated film 1, so that the glue on the columnar airbag 7 can be covered on the pre-coated film 1 and the glue layer can be prevented from overflowing from the side of the pre-coated film 1.

[0035] A wear-resistant ring 22 is rotatably installed at one end of the limiting cylinder 13 close to the middle of the cylindrical airbag 7. When the cylindrical airbag 7 is inflated, the end of the wear-resistant ring 22 can be pressed against the edge of the expanded position of the cylindrical airbag 7. When the cylindrical airbag 7 is inflated and rotates, it can drive the wear-resistant ring 22 to rotate together, while the limiting cylinder 13 remains stationary, thereby reducing the friction between the edge of the expanded position of the cylindrical airbag 7 and the edge of the limiting cylinder 13, and preventing the edge of the limiting cylinder 13 from cutting the rotating cylindrical airbag 7 and causing the cylindrical airbag 7 to rupture.

[0036] The production process of pre-coating film adhesive layer lamination adopts the above-mentioned pre-coating film adhesive layer lamination device, comprising the following steps: S1, loading, placing the pre-coating film 1 to be processed on the conveyor belt 2, and driving the pre-coating film 1 to move by the conveyor belt 2;

[0037] S2, preparing glue, putting the glue layer raw material into the glue preparation box 10, so as to facilitate the subsequent pressing of the glue layer on the pre-coating film 1;

[0038] S3, limit adjustment, adjusting the length of the columnar airbag 7 through the adjustment mechanism 5, so that the length of the columnar airbag 7 is equal to the width of the pre-coating film 1;

[0039] S4, glue layer processing: the conveyor belt 2 conveys the pre-coating film 1 to the bottom of the columnar airbag 7, and the glue in the glue preparation box 10 is pressed tightly onto the pre-coating film 1 through the columnar airbag 7 to form a glue layer.

[0040] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pre-coating film adhesive layer laminating device, comprising a conveyor belt (2) for conveying a pre-coating film (1), characterized in that: It also comprises a laminating mechanism (3), a glue feeding mechanism (4) and an adjusting mechanism (5), wherein the laminating mechanism (3) comprises a support tube (6) with a hollow interior, wherein the support tube (6) is mounted above the conveyor belt (2), wherein the surface of the support tube (6) is covered with a columnar airbag (7), wherein a plurality of air outlet holes are evenly distributed on the tube wall of the support tube (6), wherein the two ends of the support tube (6) are respectively connected with an air inlet pipe (8) and an air outlet pipe (9), wherein the air inlet pipe (8) and the air outlet pipe (9) are connected to the columnar airbag (7) via the air outlet holes, and wherein the columnar airbag (7) can expand to fit the surface of the pre-coated film (1) after being inflated; The glue feeding mechanism (4) comprises a glue preparation box (10) and a glue transfer roller (11); the glue transfer roller (11) is mounted above the columnar airbag (7); when the columnar airbag (7) is inflated, the surface of the glue transfer roller (11) can abut against the surface of the columnar airbag (7); a glue outlet (12) is provided at the bottom of the glue preparation box (10); the glue outlet (12) abuts against the surface of the glue transfer roller (11); the glue preparation box (10) is used to press a glue layer onto the surface of the glue transfer roller (11); The regulating mechanism (5) comprises a limiting cylinder (13) slidably mounted on both ends of the columnar airbag (7); the diameter of the limiting cylinder (13) is smaller than the diameter of the columnar airbag (7) after expansion; The limiting cylinder (13) of the regulating mechanism (5) blocks the two ends of the columnar airbag (7) for a distance, so that the unblocked length of the middle section of the columnar airbag (7) is equal to the width of the pre-coated film (1). Then, gas is filled into the support cylinder (6) and the columnar airbag (7) through the air inlet pipe (8) to expand the columnar airbag (7). At this time, the two ends of the columnar airbag (7) are blocked by the limiting cylinder (13) and cannot expand. The middle section of the columnar airbag (7) bulges and fits on the surface of the pre-coated film (1). The two ends of the columnar airbag (7) still keep in contact with the support cylinder (6) and are pressed against the support cylinder (6), so that the support cylinder (6) can drive the columnar airbag (7) to rotate.

2. The pre-coating film adhesive layer laminating device according to claim 1 is characterized in that: The adjusting mechanism (5) further comprises a base (14), a worm gear mechanism (15), a guide rod (16) and a sliding plate (17); the worm gear mechanism (15) is rotatably mounted on the base (14); the top of the sliding plate (17) is fixedly connected to an end of the limiting cylinder (13) away from the cylindrical airbag (7); the bottom of the sliding plate (17) is slidably connected to the guide rod (16); the guide rod (16) is horizontally fixed to the base (14); the axis of the guide rod (16) is parallel to the axis of the supporting cylinder (6); the worm wheel of the worm gear mechanism (15) is threadedly connected to the middle part of the sliding plate (17) via a screw; the worm gear mechanism (15) drives the limiting cylinder (13) to move via the sliding plate (17).

3. The pre-coating film adhesive layer laminating device according to claim 1 is characterized in that: The laminating mechanism (3) further comprises a main shaft (18), a bracket (19), a fixed disk (20) and a sealing cover (21); the two ends of the support tube (6) are coaxially fixedly connected to the main shaft (18) via the fixed disk (20); the sealing cover (21) is rotatably sleeved on the two ends of the support tube (6); the sealing cover (21) is used to seal the two ends of the support tube (6); the air inlet pipe (8) and the exhaust pipe (9) are connected to the interior of the support tube (6) via the sealing cover (21); the main shaft (18) passes through the sealing cover (21) and is slidably connected to the sealing cover (21).

4. The pre-coating film adhesive layer laminating device according to claim 1 is characterized in that: A wear-resistant ring (22) is rotatably mounted on one end of the limiting cylinder (13) close to the middle of the columnar airbag (7); when the columnar airbag (7) is inflated, the end of the wear-resistant ring (22) can be tightly pressed against the edge of the inflated position of the columnar airbag (7).

5. The pre-coating film adhesive layer laminating device according to claim 3 is characterized in that: A glue feeding pipe (23) and a plurality of nozzles (24) are also fixed in the glue preparation box (10); the glue feeding pipe (23) is horizontally fixed in the middle of the glue preparation box (10); the outer wall of the glue preparation box (10) is fixedly connected to the bracket (19); the glue feeding pipe (23) is connected to a glue liquid pipeline (25); the plurality of nozzles (24) are arranged at equal intervals at the bottom of the glue feeding pipe (23) and are connected to the glue feeding pipe (23); the nozzles (24) are arranged toward the glue outlet (12) at the bottom of the glue preparation box (10).

6. The pre-coating film adhesive layer laminating device according to claim 1, characterized in that: A heating wire is fixed inside the transfer roller (11).

7. The pre-coating film adhesive layer laminating device according to claim 1 is characterized in that: A heating cylinder (26) is also installed at the inlet end of the air intake pipe (8), and the heating cylinder (26) is used to heat the air transported by the air intake pipe (8).

8. A production process for laminating a pre-coated film adhesive layer, characterized in that: The pre-coating film adhesive layer laminating device according to any one of claims 1 to 7 further comprises the following steps: S1, loading, placing the pre-coated film (1) to be processed on the conveyor belt (2), and driving the pre-coated film (1) to move via the conveyor belt (2); S2, preparing glue, placing the glue layer raw material into a glue preparation box (10) to facilitate the subsequent lamination of the glue layer on the pre-coated film (1); S3, limit adjustment, adjusting the length of the columnar airbag (7) by means of the adjustment mechanism (5) so that the length of the columnar airbag (7) is equal to the width of the pre-coated film (1); S4, adhesive layer processing, the conveyor belt (2) conveys the pre-coated film (1) to the bottom of the columnar airbag (7), and the adhesive in the adhesive preparation box (10) is pressed onto the pre-coated film (1) through the columnar airbag (7) to form an adhesive layer.

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