Composite film cooling mechanism and composite film preparation process

Abstract

The present application relates to the technical field of composite film processing, and specifically discloses a composite film cooling mechanism and a composite film preparation process. The composite film cooling mechanism includes a frame assembly, and a ventilation cooling assembly and a water injection cooling assembly respectively installed on the frame assembly. The ventilation cooling assembly includes a blowing part and an air suction part. The air suction part is rotatably arranged on the frame assembly, and the air outlet part is arranged on one side of the air suction part, and the output end faces the air suction part; the water injection cooling assembly includes a roller part, a water changing part and a rotating driving part. The roller part is rotatably arranged on the frame assembly, and the water changing part is connected to the roller part to inject and discharge cooling water. The rotating driving part is arranged on the frame assembly and connected to the roller part; the composite film preparation process includes: unfolding the substrate; coating; drying and curing; cooling and shaping using the composite film cooling mechanism; substrate pressing; winding. The composite film cooling mechanism of the present application has the advantage of improving the cooling effect of the composite film cooling and shaping step.

Description

Technical Field

[0001] The present application relates to the technical field of composite film processing, and in particular to a composite film cooling mechanism and a composite film preparation process. Background Art

[0002] During the composite film production process, adhesive is applied to a substrate, dried, and cured to form a film. The film is then cooled and laminated to the substrate before being rolled up. This cooling step helps the film solidify its shape, reducing the possibility of over-curing and shrinkage caused by residual heat, thereby ensuring film quality.

[0003] Currently, cooling is mostly performed using chilled rollers. These typically use cooling water injected into a hollow roller to lower the roller's surface temperature. As the film passes over the roller, heat transfer occurs between the roller and the film, cooling and setting the film. By controlling the warmth of the condensed water, chilled rollers achieve temperature-controlled cooling, saving space and reducing costs.

[0004] However, the cooling time of the cooling roller is too short to achieve complete cooling, and the temperature difference between the film and the cooling roller is too large, which makes the film prone to deformation or frequent breakage, resulting in poor cooling and shaping effect, so it needs to be improved. Summary of the Invention

[0005] In order to improve the cooling and shaping effect of the film cooling step, the present application provides a composite film cooling mechanism and a composite film preparation process.

[0006] In a first aspect, the present application provides a composite film cooling mechanism, which adopts the following technical solution:

[0007] A composite film cooling mechanism comprises a frame assembly, and a ventilation cooling assembly and a water injection cooling assembly respectively mounted on the frame assembly, the ventilation cooling assembly comprising a blowing member and an air suction member, the air suction member being rotatably arranged on the frame assembly, and the air suction member being in rolling contact with a side of a substrate not coated with the film; the blowing member being arranged on one side of the air suction member, and the output end of the blowing member facing the air suction member; the water injection cooling assembly comprising a roller member, a water changing member and a rotating driving member, the roller member being rotatably arranged on the frame assembly, and being in rolling contact with a side of a substrate not coated with the film, the water changing member being connected to the roller member to inject or discharge cooling water, and the rotating driving member being arranged on the frame assembly and connected to the roller member.

[0008] By adopting the above technical solution, the blowing element and the suction element cooperate to initially cool the film through air convection; the water changing element injects cooling water into the roller element, and the roller element is connected to the film to further cool the film through heat conduction; through two-step cooling, the cooling efficiency of the film is improved, and at the same time, the possibility of deformation or breakage of the film caused by excessive temperature difference between the film and the roller element is reduced, which greatly improves the cooling and shaping effect, and is conducive to ensuring the stable quality of the film.

[0009] In a specific feasible implementation scheme, the suction part includes a wind roller, a fixed shaft, a connecting pipe, a suction pipe and a heat dissipation fan, the fixed shaft and the connecting pipe are respectively arranged on the frame assembly, one end of the wind roller is rotatably connected to the fixed shaft, and the other end of the wind roller is rotatably connected to the connecting pipe, the connecting pipe is connected to the suction pipe, and the input end of the heat dissipation fan is connected to the end of the suction pipe away from the connecting pipe; the inner cavity of the wind roller is hollow and connected to the connecting pipe, and a plurality of suction holes are provided on the side wall of the wind roller.

[0010] By adopting the above technical solution, under the action of the heat dissipation fan, air enters the wind roller through multiple suction holes, and is then discharged by the heat dissipation fan through the connecting pipe and the suction pipe, thereby increasing the air circulation rate and improving the heat dissipation effect of air convection; at the same time, it can make the film / substrate adsorbed and adhered to the surface of the wind roller, reducing the possibility of unstable transmission of the film / substrate due to the wind force of the blowing part.

[0011] In a specific feasible implementation scheme, the blowing member includes an air expansion hood, an installation air duct, a blower and an air inlet duct, both ends of the installation air duct are connected to the frame assembly, and one end of the installation air duct passes through the frame assembly and is connected to the air inlet duct, and the end of the air inlet duct away from the installation air duct is connected to the output end of the blower; the air expansion hood is installed on the installation air duct; a plurality of air outlets are provided on the installation air duct and located in the side wall of the air expansion hood, any of the air outlets is communicated with the air expansion hood, and a plurality of blowing outlets are provided on the side wall of the air expansion hood facing the wind roller.

[0012] By adopting the above technical solution, the blower sends air from the air inlet pipe into the installation air duct, and then blows it out through the air expansion hood. The air expansion hood increases the blowing area, makes the wind force more dispersed, and reduces the possibility of damage to the film caused by concentrated and excessive wind force.

[0013] In a specific possible implementation scheme, the roller shaft component includes a rotating shaft, a heat-conducting outer roller, a heat-insulating inner roller and a mounting side plate, the rotating shaft is rotatably arranged on the frame assembly and connected to the rotating drive component, the mounting side plate is arranged on the rotating shaft, the heat-conducting outer roller is arranged between the two mounting side plates and is simultaneously connected to the two mounting side plates; the heat-insulating inner roller is arranged in the side wall of the heat-conducting outer roller, and the heat-insulating inner roller is simultaneously connected to the two mounting side plates; the outer side wall of the heat-insulating inner roller is against the inner side wall of the heat-conducting outer roller, and a cooling water trough is spirally arranged on the outer side wall of the heat-insulating inner roller, and a water injection hole and a drainage hole are respectively penetrated in the side walls of the cooling water trough, the water changing component is connected to the water injection hole to inject cooling water, and the water changing component is connected to the drainage hole to discharge cooling water.

[0014] By adopting the above technical solution, cooling water enters the cooling water tank from the water injection hole, reducing the temperature of the heat-conducting outer roller. The heat-conducting outer roller is connected to the film / substrate, plays a heat-conducting role, which is beneficial to reducing the temperature of the film.

[0015] In a specific feasible implementation scheme, two cooling water grooves are spirally arranged on the outer wall of the insulating inner roller, the two cooling water grooves are parallel to each other, and the water flow directions in the two cooling water grooves are opposite; the water injection holes are respectively opened at both ends of the insulating inner roller, and the drainage holes are respectively opened at both ends of the insulating inner roller.

[0016] By adopting the above technical solution, the water flow directions of the two cooling water troughs are opposite, which is conducive to ensuring the uniform temperature of the heat-conducting outer roller and improving the shaping and cooling effect of the film.

[0017] In a specific feasible implementation scheme, a water inlet chamber is provided at one end of the rotating shaft, and a water outlet chamber is provided at the other end; the water changing component includes a water inlet pipe, a water outlet pipe, a rotary joint, inner tube one and inner tube two, the water inlet pipe is connected to the rotating shaft through the rotary joint, and the water inlet pipe is communicated with the water inlet chamber; the water outlet pipe is connected to the rotating shaft through another rotary joint, and the water outlet pipe is communicated with the water outlet chamber; one end of each of the inner tube one is communicated with the water inlet chamber, and the other end is connected with any of the water injection holes; one end of each of the inner tube two is connected with the water outlet chamber, and the other end is connected with any of the drainage holes.

[0018] By adopting the above technical solution, cooling water enters the water inlet cavity through the water inlet pipe, and is then transported to the corresponding cooling water tank through one of the inner pipes 1 to cool the heat-conducting outer roller, and is then discharged to the water outlet cavity through the inner pipe 2, and finally discharged through the water outlet pipe.

[0019] In a specific embodiment, a thermal insulation sleeve is respectively provided on the outside of the side wall of any one of the inner tubes.

[0020] By adopting the above technical solution, the insulation sleeve ensures that the temperature of the cooling water is stable when it is transmitted in the inner pipe, which is beneficial to ensuring the cooling and shaping effect.

[0021] In a specific feasible implementation scheme, a plurality of fixing hoops are provided on the rotating shaft, wherein one of the inner tubes 1 is passed through the side walls of the plurality of fixing hoops and is connected to one of the water injection holes away from the water inlet chamber; and one of the inner tubes 2 is passed through the side walls of the plurality of fixing hoops and is connected to one of the drainage holes away from the water outlet chamber.

[0022] By adopting the above technical solution, the fixing hoop improves the position stability of the inner tube 1 and the inner tube 2, which is beneficial to reduce the possibility of breakage at the connection between the inner tube 1 and the inner tube 2 and the rotating shaft due to centrifugal action when the rotating shaft rotates.

[0023] In a specific possible implementation scheme, the rotating drive member includes a driving motor, a driving gear and a driven gear, the driving motor is mounted on the frame assembly, and the driving gear is connected to the output end of the driving motor; the driven gear is sleeved on the rotating shaft and meshed with the driving gear.

[0024] By adopting the above technical solution, the driving motor drives the driving gear to rotate, and the driven gear drives the rotating shaft to rotate, so that the heat-conducting outer roller and the heat-insulating inner roller rotate around the rotating shaft.

[0025] In a second aspect, the present application provides a process for preparing a composite adhesive film, which adopts the following technical solution:

[0026] A process for preparing a composite film, using the composite film cooling mechanism;

[0027] The preparation process of the composite film comprises the following steps:

[0028] The substrate is conveyed through a plurality of rollers for unrolling;

[0029] Feed the substrate into the glue tank and apply the glue on the substrate with a scraper;

[0030] The substrate coated with glue is sent into a multi-section oven to solidify and dry the glue to obtain a prefabricated adhesive film;

[0031] Cooling the prefabricated film through the composite film cooling mechanism;

[0032] The substrate is laminated onto the prefabricated adhesive film by a laminating roller to obtain a composite adhesive film;

[0033] Collect the paper.

[0034] In a specific embodiment, the cooling step includes: initially cooling the prefabricated film by a ventilation cooling component, and further cooling the prefabricated film by a water injection cooling component.

[0035] By adopting the above technical solution, the cooling and shaping effect of the prefabricated film is improved, which is beneficial to improving the forming effect of the film.

[0036] In summary, this application has the following beneficial technical effects:

[0037] 1. The suction element cooperates with the suction element to initially cool the film through air convection; the water exchange element injects cooling water into the roller element, and the roller element is in contact with the film, further cooling the film through heat conduction. This two-step cooling process improves the cooling efficiency of the film and reduces the possibility of deformation or breakage of the film caused by the large temperature difference between the film and the roller element, greatly improving the cooling and shaping effect, which helps to ensure the stability of the film quality.

[0038] 2. The suction piece increases the air circulation rate and improves the heat dissipation effect of air convection; at the same time, it can make the film / substrate adhere to the surface of the wind roller, reducing the possibility of unstable transmission of the film / substrate due to the wind force of the blowing piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic structural diagram of a composite film cooling mechanism in an embodiment of the present application;

[0040] Figure 2 is a schematic cross-sectional view in the vertical direction for illustrating the blowing member in an embodiment of the present application;

[0041] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0042] Figure 4 is a schematic cross-sectional view in the vertical direction for illustrating the air suction member in an embodiment of the present application;

[0043] Figure 5 is a schematic cross-sectional view in the vertical direction for illustrating a water injection cooling assembly in an embodiment of the present application;

[0044] Figure 6 It is an exploded schematic diagram used to illustrate the water injection cooling component in the embodiment of the present application.

[0045] Description of reference numerals:

[0046] 1. Frame assembly; 11. Support side panels; 12. Motor mounting base; 2. Ventilation and cooling assembly; 21. Blowing element; 211. Air diffuser; 2111. Blowing port; 212. Air duct installation; 2121. Air outlet; 213. Air inlet; 22. Air suction element; 221. Air roller; 2211. Air suction hole; 222. Fixed shaft; 223. Connecting pipe; 224. Air suction pipe; 225. Cooling fan; 3. Water injection cooling assembly; 4. Roller assembly; 41. Rotating shaft; 411 , water inlet chamber; 412, water outlet chamber; 413, fixing hoop; 42, heat-conducting outer roller; 43, heat-insulating inner roller; 431, cooling water trough; 432, water injection hole; 433, drainage hole; 44, installation side panel; 5, water changing parts; 51, water inlet pipe; 52, water outlet pipe; 53, rotary joint; 54, inner tube one; 541, insulation sleeve; 55, inner tube two; 6, rotating drive part; 61, drive motor; 62, drive gear; 63, driven gear; 7, water inlet end; 8, water outlet end. DETAILED DESCRIPTION

[0047] Example 1

[0048] This embodiment discloses a composite film cooling mechanism.

[0049] The following is combined with Figure 1-6 This application is described in further detail.

[0050] Reference Figure 1 The cooling mechanism of the composite film includes a frame assembly 1, a ventilation cooling assembly 2, and a water injection cooling assembly 3. The ventilation cooling assembly 2 includes a blowing member 21 and a suction member 22. The blowing member 21 and the suction member 22 are respectively arranged on the frame assembly 1. The blowing member 21 is arranged on one side of the suction member 22, and the output end of the blowing member 21 faces the suction member 22. The substrate carrying the cured film is transferred between the blowing member 21 and the suction member 22. The suction member 22 is in rolling contact with the side of the substrate not coated with the film, and the output end of the blowing member 21 faces the side of the substrate coated with the film. The water injection cooling assembly 3 is arranged on the frame assembly 1 and is in rolling contact with the side of the substrate not coated with the film.

[0051] Reference Figure 1 and Figure 2 The blowing member 21 outputs wind force to the film, which can dissipate heat from the film through air convection, thereby reducing the temperature of the film. The suction function of the suction member 22 is to keep the substrate attached to the suction member 22, thereby ensuring the unfolding of the substrate and reducing the possibility of positional displacement and unstable transmission of the substrate due to wind force during transmission. At the same time, it accelerates air circulation, further promotes the heat dissipation of the film, and increases the cooling rate of the film. The water injection cooling component 3 exchanges heat with the film, further cooling the film through heat conduction, thereby improving the cooling and shaping effect of the film.

[0052] Reference Figure 2 The blower assembly includes an air diffuser hood 211, an air duct installation 212, a blower (not shown), and an air inlet duct 213. The frame assembly 1 includes two opposing support side panels 11. The air duct installation 212 is fixed between the two support side panels 11. One end of the air duct installation 212 extends through one of the support side panels 11 to connect to the air inlet duct 213. The end of the air inlet duct 213, away from the air duct installation 212, is connected to the output end of the blower (not shown). The air diffuser hood 211 is mounted on the air duct installation 212.

[0053] Reference Figure 3 A plurality of air outlets 2121 are evenly arranged on the installation air duct 212, and the plurality of air outlets 2121 are communicated with the inner cavity of the air expansion cover 211, and a plurality of air blowing ports 2111 are evenly arranged on the side wall of the air expansion cover 211 facing the air suction member 22.

[0054] Reference Figure 1 and Figure 3 The blower (not shown) transmits air from the air inlet pipe 213 to the installation air duct 212, and then inputs it into the air expansion hood 211 through the air outlet 2121. The air expansion hood 211 disperses the air flow and blows it onto the film through multiple blowing ports 2111 to initially cool the film.

[0055] Reference Figure 4 The suction member 22 includes a roller 221, a fixed shaft 222, a connecting pipe 223, a suction pipe 224, and a heat dissipation fan 225. One end of the fixed shaft 222 is fixed to the side wall of one of the support side panels 11 facing the other support side panel 11. The other end of the fixed shaft 222 is rotatably connected to the roller 221, with a sealed bearing installed between the fixed shaft 222 and the roller 221. The end of the roller 221 away from the fixed shaft 222 is rotatably connected to the connecting pipe 223, with a sealed bearing installed between the fixed shaft 222 and the roller 221. The roller 221 is hollow and communicates with the connecting pipe 223. The end of the connecting pipe 223 away from the roller 221 passes through one of the support side panels 11 and is connected to the suction pipe 224. The end of the suction pipe 224 away from the connecting pipe 223 is connected to the input end of the heat dissipation fan 225. Multiple suction holes 2211 are evenly distributed throughout the side wall of the roller 221. Under the suction effect of the heat dissipation fan 225 , air flows into the wind roller 221 from the multiple air suction holes 2211 , passes through the connecting pipe 223 and the air suction pipe 224 , and is finally discharged by the heat dissipation fan 225 .

[0056] Reference Figure 4 The water injection cooling assembly 3 includes a roller member 4, a water changing member 5 and a rotating drive member 6. The roller member 4 is rotatably arranged between two supporting side plates 11. The water changing member 5 is connected to the roller member 4 to inject or discharge cooling water. The rotating drive member 6 is installed on one of the supporting side plates 11 and is connected to the roller member 4 to drive the rotation of the roller member 4.

[0057] Reference Figure 4 The roller assembly 4 includes a rotating shaft 41, a heat-conducting outer roller 42, a heat-insulating inner roller 43, and a mounting side plate 44. The rotating shaft 41 rotates simultaneously and passes through the two supporting side plates 11. A transition bearing is installed between each supporting side plate 11 and the rotating shaft 41. The two mounting side plates 44 are respectively connected to the rotating shaft 41. Each end of the heat-conducting outer roller 42 in the longitudinal direction is connected to the mounting side plate 44, and the central axis of the heat-conducting outer roller 42 coincides with the central axis of the rotating shaft 41. The heat-insulating inner roller 43 is arranged in the side wall of the heat-conducting outer roller 42, and the central axis of the heat-insulating inner roller 43 coincides with the central axis of the heat-conducting outer roller 42. Each end of the heat-insulating inner roller 43 in the longitudinal direction is connected to the mounting side plate 44.

[0058] Reference Figure 4 The outer wall of the insulating inner roller 43 abuts the inner wall of the heat-conducting outer roller 42. Two cooling water grooves 431 are spirally arranged on the outer wall of the insulating inner roller 43, and the two cooling water grooves 431 are parallel to each other. Each cooling water groove 431 has an injection hole 432 and a drainage hole 433. Each injection hole 432 is located at the end of the insulating inner roller 43 along its length, away from the other injection hole 432. Each drainage hole 433 is located at the end of the insulating inner roller 43 along its length, away from the other drainage hole 433.

[0059] Reference Figure 5 The water-changing component 5 includes an inlet pipe 51, an outlet pipe 52, a rotary joint 53, two inner tubes 1 54, and two inner tubes 2 55. One end of the rotating shaft 41 is designated as the water inlet end 7, and the other end is designated as the water outlet end 8. A water inlet chamber 411 is defined at the water inlet end of the rotating shaft 41, and a water outlet chamber 412 is defined at the water outlet end of the rotating shaft 41. The inlet pipe 51 is connected to the water inlet end 7 of the rotating shaft 41 via a rotary joint 53, and the inlet pipe 51 communicates with the water inlet chamber 411. The outlet pipe 52 is connected to the water outlet end 8 of the rotating shaft 41 via another rotary joint 53, and the outlet pipe 52 communicates with the water outlet chamber 412. One end of each inner tube 1 54 is connected to the water inlet end of the rotating shaft 41 and communicates with the water inlet chamber 411. The other end of each inner tube 1 54 is connected to the heat-insulating inner roller 43. Each inner tube 1 54 communicates with one of the cooling water troughs 431 through one of the water injection holes 432. One end of each inner tube 2 55 is connected to the water outlet end of the rotating shaft 41 and communicates with the water outlet chamber 412. The other end of each inner tube 2 55 is connected to the heat-insulating inner roller 43. Each inner tube 2 55 communicates with one of the cooling water troughs 431 through one of the water drainage holes 433.

[0060] Reference Figure 5 and Figure 6The outer surface of the rotating shaft 41 is provided with a plurality of fixing hoops 413. The inner tube 1 54, which communicates with the water injection hole 432 away from the water inlet end 7, is inserted into the sidewalls of some of these fixing hoops 413, while the inner tube 2 55, which communicates with the drainage hole away from the water outlet end 8, is inserted into the sidewalls of other fixing hoops 413. The fixing hoops 413 help to enhance the positional stability of the inner tube 1 54 and the inner tube 2 55.

[0061] Reference Figure 6 The outer surface of the inner tube 1 54 is covered with an insulation sleeve 541, which can be an insulation sponge glued and fixed on the inner tube 1 54. The insulation sleeve 541 ensures that the temperature of the cooling water is stable when it is transmitted in the inner tube 1 54, which is conducive to ensuring the cooling effect.

[0062] Reference Figure 6 The rotary drive member 6 includes a drive motor 61, a drive gear 62, and a driven gear 63. A motor mounting base 12 is provided on one of the support side plates 11. The drive motor 61 is mounted on the motor mounting base 12, and the output end of the drive motor 61 is connected to the drive gear 62. The driven gear 63 is sleeved on the rotating shaft 41 and rotates coaxially with the rotating shaft 41. The driven gear 63 is meshed with the driving gear. The drive motor 61 drives the drive gear 62 to rotate, which in turn drives the driven gear 63 and the rotating shaft 41 to rotate, causing the heat-conducting outer roller 42 and the air roller 221 to roll in contact with the side of the substrate facing away from the film, thereby improving heat transfer efficiency.

[0063] The implementation principle of the composite film cooling mechanism of the embodiment of the present application is as follows:

[0064] The wind roller 221 is in contact with the side of the substrate facing away from the film. The heat dissipation fan 225 extracts air. The air flows into the wind roller 221 through the multiple air suction holes 2211, passes through the connecting pipe and the air suction pipe 224, and is finally discharged by the heat dissipation fan 225. At the same time, the blower transmits the air from the air inlet pipe 213 to the installation air duct 212, and then inputs it into the air expansion cover 211 through the air outlet 2121. The air expansion cover 211 disperses the air flow and blows it onto the film through the multiple air blowing holes 2111, thereby initially cooling the film.

[0065] Cooling water enters the water inlet chamber 411 from the water inlet pipe 51, and then flows into the cooling water tank 431 through the two inner pipes 54, thereby reducing the temperature of the heat-conducting outer roller 42; the driving motor 61 drives the rotating shaft 41 to rotate, thereby causing the heat-conducting outer roller 42 and the wind roller 221 to roll in contact with the side of the substrate facing away from the film. Heat conduction occurs between the heat-conducting outer roller 42 and the film-substrate, further reducing the temperature of the film and cooling and shaping the film.

[0066] Example 2

[0067] This embodiment discloses a process for preparing a composite adhesive film, comprising the following steps:

[0068] Step 1: The substrate is unwound by conveying it through multiple rollers.

[0069] Step 2: The unfolded substrate is transferred into the glue tank, and the glue is applied to the substrate by a comma scraper.

[0070] Step 3: Send the glue-coated substrate into a multi-section oven for drying and curing to obtain a prefabricated adhesive film.

[0071] Step 4: Transfer the prefabricated film to the cooling mechanism for ventilation cooling and water injection cooling. Specifically including:

[0072] Combined with attachment Figure 1-6 , the prefabricated film is transferred to the wind roller 221, and the side not coated with the film contacts the wind roller 221. The blower sends the airflow into the air expansion cover 211 through the air inlet pipe 213 and the installation air pipe 212, and blows it out to the film through multiple blowing ports 2111 to perform preliminary cooling of the film; at the same time, under the suction action of the heat dissipation fan 225, the wind roller 221 inhales air, which speeds up the air flow efficiency and improves the heat dissipation effect; the prefabricated film continues to be transferred to the heat-conducting outer roller 42, and the side not coated with the film contacts the heat-conducting outer roller 42, heat conduction occurs with the heat-conducting outer roller 42, and is fully cooled and shaped under the action of cooling water;

[0073] Step 5: Laminating the substrate onto the cooled prefabricated film using a laminating roller to obtain a composite film;

[0074] Step 6: Roll up.

[0075] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A composite film cooling mechanism, characterized by: The invention comprises a frame assembly (1), and a ventilation cooling assembly (2) and a water injection cooling assembly (3) respectively mounted on the frame assembly (1); the ventilation cooling assembly (2) comprises a blowing member (21) and an air suction member (22); the air suction member (22) is rotatably mounted on the frame assembly (1), and the air suction member (22) is in rolling contact with a side of a substrate not coated with a film, and the substrate is attached to the air suction member (22); the blowing member (21) is mounted on one side of the air suction member (22), and the blowing member (21) is disposed on the other side of the air suction member (22). The output end of the cooling element (21) faces the air suction element (22); the water injection cooling assembly (3) comprises a roller element (4), a water changing element (5) and a rotary driving element (6); the roller element (4) is rotatably arranged on the frame assembly (1); the roller element (4) is in rolling contact with the side of the substrate not coated with the film; the water changing element (5) is connected to the roller element (4) to inject or discharge cooling water; the rotary driving element (6) is arranged on the frame assembly (1) and connected to the roller element (4); The air suction member (22) comprises an air roller (221), the inner cavity of the air roller (221) is hollow and communicates with the connecting pipe (223), and a plurality of air suction holes (2211) are provided through the side wall of the air roller (221); The roller shaft member (4) comprises a heat-insulating inner roller (43), and a cooling water groove (431) is spirally provided on the outer side wall of the heat-insulating inner roller (43); The air suction member (22) comprises a fixed shaft (222), a connecting pipe (223), an air suction pipe (224) and a heat dissipation fan (225); the fixed shaft (222) and the connecting pipe (223) are respectively arranged on the frame assembly (1); one end of the wind roller (221) is rotatably connected to the fixed shaft (222); the other end of the wind roller (221) is rotatably connected to the connecting pipe (223); the connecting pipe (223) is communicated with the air suction pipe (224); the input end of the heat dissipation fan (225) is connected to one end of the air suction pipe (224) away from the connecting pipe (223); the inner cavity of the wind roller (221) is hollow and communicates with the connecting pipe (223); The blowing member (21) comprises an air expansion hood (211), an installation air duct (212), a blower and an air inlet duct (213); both ends of the installation air duct (212) are connected to the frame assembly (1), and one end of the installation air duct (212) passes through the frame assembly (1) and is connected to the air inlet duct (213); the end of the air inlet duct (213) away from the installation air duct (212) is connected to the output end of the blower; the air expansion hood (211) is installed on the installation air duct (212); a plurality of air outlets (2121) are provided on the installation air duct (212) and located in the side wall of the air expansion hood (211), any of the air outlets (2121) is connected to the air expansion hood (211), and a plurality of air blowing ports (2111) are provided on the side wall of the air expansion hood (211) facing the wind roller (221).

2. The composite film cooling mechanism according to claim 1, characterized in that: The roller shaft member (4) comprises a rotating shaft (41), a heat-conducting outer roller (42) and a mounting side plate (44); the rotating shaft (41) is rotatably arranged on the frame assembly (1) and is connected to the rotary drive member (6); the mounting side plate (44) is arranged on the rotating shaft (41); the heat-conducting outer roller (42) is arranged between two mounting side plates (44) and is simultaneously connected to the two mounting side plates (44); the heat-insulating inner roller (43) is arranged in the side wall of the heat-conducting outer roller (42), and the heat-insulating inner roller (43) is arranged in the side wall of the heat-conducting outer roller (42). 3) connected to the two mounting side plates (44) at the same time; the outer side wall of the heat-insulating inner roller (43) abuts against the inner side wall of the heat-conducting outer roller (42), and a cooling water trough (431) is spirally provided on the outer side wall of the heat-insulating inner roller (43), and a water injection hole (432) and a drainage hole (433) are respectively provided through the side wall of the cooling water trough (431), the water-changing component (5) is connected to the water injection hole (432) to inject cooling water, and the water-changing component (5) is connected to the drainage hole (433) to discharge cooling water.

3. The composite film cooling mechanism according to claim 2, characterized in that: The two cooling water troughs (431) are parallel to each other, and the water flows in the two cooling water troughs (431) are in opposite directions; the water injection holes (432) are respectively opened at both ends of the heat-insulating inner roller (43), and the drainage holes (433) are respectively opened at both ends of the heat-insulating inner roller (43).

4. The composite film cooling mechanism according to claim 3, characterized in that: One end of the rotating shaft (41) is provided with a water inlet chamber (411), and the other end is provided with a water outlet chamber (412); the water changing component (5) comprises a water inlet pipe (51), a water outlet pipe (52), a rotary joint (53), an inner tube 1 (54) and an inner tube 2 (55); the water inlet pipe (51) is connected to the rotating shaft (41) through the rotary joint (53), and the water inlet pipe (51) is communicated with the water inlet chamber (411); the water outlet pipe (52) is connected to the rotating shaft (41) through another rotating joint (53), and the water outlet pipe (52) is connected to the water outlet chamber (412); one end of each of the inner tubes (54) is connected to the water inlet chamber (411), and the other end is connected to any of the water injection holes (432); one end of each of the inner tubes (55) is connected to the water outlet chamber (412), and the other end is connected to any of the drainage holes (433).

5. The composite film cooling mechanism according to claim 4, characterized in that: The side wall of any one of the inner tubes (54) is covered with a heat-insulating sleeve (541).

6. The composite film cooling mechanism according to claim 5, characterized in that: A plurality of fixing hoops (413) are provided on the rotating shaft (41), wherein one of the inner tubes (54) is passed through the side walls of the plurality of fixing hoops (413) and is communicated with one of the water injection holes (432) away from the water inlet chamber (411); and one of the inner tubes (55) is passed through the side walls of the plurality of fixing hoops (413) and is communicated with one of the water discharge holes (433) away from the water outlet chamber (412).

7. The composite film cooling mechanism according to claim 2, characterized in that: The rotary drive member (6) comprises a drive motor (61), a drive gear (62) and a driven gear (63); the drive motor (61) is mounted on the frame assembly (1); the drive gear (62) is connected to the output end of the drive motor (61); and the driven gear (63) is sleeved on the rotating shaft (41) and meshed with the drive gear (62).

8. A process for preparing a composite adhesive film, characterized in that: A composite film cooling mechanism according to any one of claims 1 to 7 is used; The preparation process of the composite film comprises the following steps: The substrate is conveyed through a plurality of rollers for unrolling; Feed the substrate into the glue tank and apply the glue on the substrate with a scraper; The substrate coated with glue is sent into a multi-section oven to solidify and dry the glue to obtain a prefabricated adhesive film; Cooling the prefabricated film through the composite film cooling mechanism; The substrate is laminated onto the prefabricated adhesive film by a laminating roller to obtain a composite adhesive film; Collect the paper.

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