Laser film compounding equipment and control method thereof

Abstract

The invention relates to laser film compounding equipment and a control method thereof, and relates to the technical field of packaging material compositing, the laser film compounding equipment comprises a machine body, and one side of the machine body is provided with a film uncoiling roller, a composite layer uncoiling roller and a laser paper uncoiling roller; the film uncoiling roller, the composite layer uncoiling roller and the laser paper uncoiling roller are sequentially and rotationally arranged on the machine body in the height direction of the machine body, a composite mechanism is arranged on the side, away from the film uncoiling roller, of the machine body and comprises a conveying belt and a hot pressing plate, and the conveying belt is arranged on the machine body in a conveying mode and conveys in the direction away from the film uncoiling roller. The hot pressing plate is arranged over the conveying belt in a sliding mode, the hot pressing plate slides in the direction close to or away from the conveying belt, the hot pressing plate has the temperature for melting the composite layer, and the effect of reducing the degumming separation probability of the laser film in the environment with the high humidity is achieved.

Description

Technical Field

[0001] The present application relates to the field of packaging material compounding, and in particular to a laser film compounding device and a control method of the compounding device. Background Art

[0002] Laser film packaging is a sub-industry in the packaging industry and has achieved rapid development. Compared with other products in the packaging industry, laser packaging materials not only have a novel and bright appearance, but also have high-tech anti-counterfeiting functions. It is known as the most cutting-edge technology product in the world's packaging and printing industry. The application field of laser materials has been very wide, and has been rapidly promoted in industries such as food, medicine, daily chemicals, tobacco and alcohol, clothing, gift packaging, and decorative materials.

[0003] Laser film is the main material for laser film packaging. The existing laser film is compounded by laser paper and CPP film. The compounding equipment unwinds the laser paper and CPP film, then applies adhesive between the laser paper and the CPP film and presses the laser paper and the CPP film to form a laser film. Since the viscosity of adhesive decreases in an environment with high humidity, the existing laser film and CPP film are prone to degumming and separation in an environment with high humidity, which greatly affects the normal use of the laser film. Summary of the invention

[0004] In order to reduce the probability of debonding and separation of the laser film in an environment with high humidity, the present application provides a laser film composite device.

[0005] The laser film composite equipment provided in this application adopts the following technical solution: A laser film composite device comprises a machine body, a film unwinding roller, a composite layer unwinding roller and a laser paper unwinding roller are arranged on one side of the machine body, the film unwinding roller, the composite layer unwinding roller and the laser paper unwinding roller are arranged on the machine body in sequence and rotate along the height direction of the machine body, a composite mechanism is arranged on the side of the machine body away from the film unwinding roller, the composite mechanism comprises a conveyor belt and a hot pressing plate, the conveyor belt is arranged on the machine body for conveying, the conveyor belt conveys in a direction away from the film unwinding roller, the hot pressing plate is slidably arranged directly above the conveyor belt, the hot pressing plate slides in a direction close to or away from the conveyor belt, and the hot pressing plate has a temperature for melting the composite layer.

[0006] By adopting the above technical scheme, a composite layer with a melting point higher than room temperature and lower than the shrinkage temperature of the film and the laser paper is selected, and the film and the laser paper are bonded and compounded through the molten composite layer by hot pressing with a hot pressing plate to form laser paper. The molten composite layer will not lose its viscosity or its viscosity will decrease due to humidity, which can reduce the probability of degumming and separation of the laser film in an environment with high humidity.

[0007] Optionally, the hot pressing plate includes a fixed frame and an adjusting block, the fixed frame is slidably set on the machine body, there are several adjusting blocks, and the several adjusting blocks are detachably installed on the fixed frame. The installation position of the adjusting blocks on the fixed frame is not fixed, and the adjusting blocks have a temperature for melting the composite layer.

[0008] Optionally, the regulating block is a hollow metal block, and an electric heating rod is arranged inside the regulating block.

[0009] Optionally, two through holes are provided on each of the adjustment blocks, both of which are connected to the interior of the adjustment block, and connecting pipes are provided between adjacent adjustment blocks, and the connecting pipes are connected to adjacent adjustment blocks through the through holes.

[0010] Optionally, the regulating block is filled with temperature control liquid, and the regulating blocks on both sides are respectively connected to a pressurized pipe and a pressure relief pipe.

[0011] Optionally, an air pressure detection sensor is provided on the regulating block, and a temperature sensor is provided on the regulating block.

[0012] Optionally, an air pressure detection sensor is provided on the regulating block, and a temperature sensor is provided on the regulating block.

[0013] Optionally, a compaction assembly is provided on the side of the composite structure facing away from the film unwinding roller, and the compaction assembly includes an upper compaction roller and a lower compaction roller, and the upper compaction roller and the lower compaction roller are both rotatably arranged on the machine body, the top of the lower compaction roller is flush with the upper surface of the conveyor belt, and the upper compaction roller is slidably arranged on the machine body, and the upper compaction roller slides toward or away from the lower compaction roller.

[0014] Optionally, a connecting rod is provided between the upper guide roller and the upper compacting roller, and the connecting rod drives the upper guide roller and the upper compacting roller to slide synchronously.

[0015] A laser film composite device and a control method of the composite device, comprising the following steps: S1: Adjust the height, adjust the height of the upper compacting tube and the upper guide roller, so that the distance between the upper guide roller and the lower guide roller and the distance between the upper compacting roller and the lower compacting roller are the same as the thickness of the composite laser film; S2: Install the adjusting blocks at the positions where hot pressing and laminating are required according to the actual laminating conditions, and connect the adjusting blocks through connecting pipes, so that the adjusting blocks at both ends are connected to the pressurizing pipe and the pressure relief pipe respectively; S3: Temperature adjustment: according to the melting temperature of the composite layer, a suitable temperature control liquid is selected, and the pressure in the adjustment block is adjusted to adjust the boiling point of the temperature control liquid, so that the boiling point of the temperature control liquid is higher than the melting temperature of the composite layer and lower than the shrinking temperature of the film and the laser paper; S4: Unwinding, unwinding the film, composite layer and laser paper respectively, and the film, composite layer and laser paper enter the guide assembly in the order from high to low; S5: Guided lamination: the guide component guides the film, the composite layer and the laser paper and then feeds them into the laminating mechanism for lamination; S6: Compacting and winding. The composite laser film is compacted by the compacting component and then wound by the winding roller.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. Select a composite layer with a melting point higher than room temperature and lower than the shrinkage temperature of the film and laser paper. Use a hot press plate to heat and melt the composite layer so that the film and laser paper are bonded and compounded through the melted composite layer to form laser paper. The melted composite layer will not lose its viscosity or reduce its viscosity due to humidity, which can reduce the probability of debonding and separation of the laser film in a high humidity environment; 2. Fill the regulating block with temperature control liquid through the pipeline. The temperature control liquid should be a liquid with a boiling point close to the temperature of melting the composite layer to control the temperature and reduce the heat shrinkage or melting of the film due to excessive temperature; 3. The temperature control liquid can control the temperature of the regulating block within a smaller range. The boiling point of the temperature control liquid can be adjusted by adjusting the air pressure so that the temperature of the regulating block will not exceed the boiling point of the control liquid, thereby reducing the probability of the temperature of the regulating block causing the film to shrink or melt; 4. The air pressure detection sensor and the temperature sensor can transmit the detected air pressure data and temperature data to the control unit in real time, and control the air pressure in the regulating block through the numerical value preset by the control unit, thereby controlling the temperature of the regulating block; 5. The compaction roller can perform heat exchange on the composite laser film while compacting, thereby reducing the temperature of the laser film and accelerating the cooling and solidification of the composite layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0018] Figure 2 It is a cross-sectional view of the overall structure of the embodiment of the present application.

[0019] Figure 3 yes Figure 2 Magnified view of part A in the middle.

[0020] Figure 4 It is a structural view of the hot pressing plate structure of an embodiment of the present application.

[0021] Figure 5 It is a schematic diagram of the overall structure of the embodiment of the present application from another perspective.

[0022] In the figure, 1. body; 2. placement slot; 3. film unwinding roller; 4. composite layer unwinding roller; 5. laser paper unwinding roller; 6. composite mechanism; 61. conveyor belt; 62. hot pressing plate; 621. fixing frame; 622. adjusting block; 7. electric heating rod; 8. through hole; 9. connecting pipe; 10. pressurized pipe; 11. pressure relief pipe; 12. air pressure detection sensor; 13. temperature sensor; 14. guide assembly; 141. upper guide roller; 142. lower guide roller; 15. guide block; 16. adjusting bolt; 17. compacting assembly; 171. upper compacting roller; 172. lower compacting roller; 18. compacting block; 19. guide rod; 20. connecting rod; 21. winding roller; 22. mounting frame; 23. support plate; 24. rib plate; 25. mounting hole; 26. screw; 27. nut. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-5 The present application is further described with specific embodiments: First of all, it should be noted that in the description of this application, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and other directional words appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application; in addition, if the terms "first", "second", "third" and other numerical quantifiers appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", and "connected" appear, they should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, a limited connection such as an interference fit, a transition fit, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; therefore, for ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0024] The present application embodiment discloses a laser film composite device, referring to Figure 1, including a rectangular body 1 erected on the ground, a film unwinding roller 3, a composite layer unwinding roller 4 and a laser paper unwinding roller 5 are arranged on one side of the length direction of the body 1, three placement slots 2 are opened on the body 1, the film unwinding roller 3, the composite layer unwinding roller 4 and the laser paper unwinding roller 5 are respectively placed in the placement slots 2 and rotatably arranged on the body 1, the film unwinding roller 3, the composite layer unwinding roller 4 and the laser paper unwinding roller 5 are respectively used for unwinding the film, the composite layer and the laser paper, and rolling the film. The composite layer roll and the laser paper roll are respectively put on the film unwinding roller 3, the composite layer unwinding roller 4 and the laser paper unwinding roller 5. The film, the composite layer and the laser paper are unwound by rotating the film unwinding roller 3, the composite layer unwinding roller 4 and the laser paper unwinding roller 5. In this embodiment, the melting temperature of the composite layer is higher than the normal temperature and lower than the temperature at which the unwound film and the laser paper shrink due to heat. The film unwinding roller 3, the composite layer unwinding roller 4 and the laser paper unwinding roller 5 are rotated in sequence along the height direction of the body 1 and are arranged on the body 1. The positions of the film and the laser paper can be interchanged. The position of the composite layer must be located between the film and the laser paper. A composite mechanism 6 is arranged on the side of the body 1 away from the film unwinding roller 3 in the length direction. The composite mechanism 6 includes a conveyor belt 61 arranged on the body 1 through roller conveying and a hot pressing plate 62 slidably arranged on the body 1 just above the conveyor belt 61. A lifting cylinder is arranged between the hot pressing plate 62 and the body 1. The hot pressing plate 62 is driven by the lifting cylinder to slide toward or away from the conveyor belt 61. The pressing plate 62 has a temperature for melting the composite layer, and the temperature is not enough to shrink the laser paper and the film. In this embodiment, the composite layer is made of modified PVC film. By adding a melting reducer, the melting temperature of the composite layer is adjusted to 80-100°C, preferably 85°C. The film in this embodiment is CPP film, which is a food-grade material. After being compounded with laser paper, it can be used for food packaging. At the same time, the heat shrinkage temperature of the CPP film is 100-125°C, which can reduce the probability of the film being melted when the composite layer is melted. The heat shrinkage temperature of laser paper is higher than that of CPP film. Therefore, in this embodiment, there is no need to consider the heat shrinkage temperature of laser paper too much. A composite layer with a melting point higher than room temperature and lower than the shrinkage temperature of the film and laser paper is selected. The composite layer is hot-pressed and melted by the hot pressing plate 62 so that the film and laser paper are pasted and compounded through the melted composite layer to form laser paper. The melted composite layer will not lose its viscosity or reduce its viscosity due to humidity, which can reduce the probability of degumming and separation of the laser film in a high humidity environment.

[0025] Reference Figure 2 , Figure 3 and Figure 4The hot pressing plate 62 includes a fixed frame 621 slidably set on the body 1 by a lifting cylinder and a plurality of adjusting blocks 622 detachably mounted on the fixed frame 621. The installation position of the adjusting blocks 622 on the fixed frame 621 is not fixed, and the number and size of the adjusting blocks 622 on the fixed frame 621 are also not fixed. In this embodiment, four adjusting blocks 622 are arranged, and the four sides of the four adjusting blocks 622 are rectangular and installed on the fixed frame 621. The adjusting blocks 622 have a temperature for melting the composite layer. The adjusting blocks 622, whose size, quantity and installation positions are not fixed, can be reasonably adjusted according to the actual hot pressing and compounding conditions. If hot pressing on four sides is required, four adjusting blocks 622 are arranged in a rectangular shape. If overall hot pressing and compounding are required, a fixed hot pressing plate 6 can be used. 2 to the position of the abutting film, and can also be spliced ​​into a whole large plate body by setting a thicker adjusting block 622, controlling the time interval of the pressing down of the hot pressing plate 62, ensuring that there are repeated areas on the composite laser film between two adjacent hot pressings, so as to ensure that all areas of the composite laser film are hot pressed, the top of the fixed frame 621 is composed of criss-cross rib plates 24, and the rib plates 24 are provided with mounting holes 25, and the adjusting block 622 is fixed with a screw 26, and the screw 26 passes through the mounting hole and then fixes the adjusting block 622 to the fixing frame 621 through the mounting nut 27; the adjusting block 622 is a hollow metal block, and the metal block is made of a metal with heat conductivity, preferably copper, and an electric heating rod 7 is arranged in the adjusting block 622, and the electric heating rod 7 is energized Then, the inside of the regulating block 622 is heated so that the regulating block 622 has the heat to melt the composite layer, and the composite layer is melted so that the laser paper and the film are adhered and composited together; two through holes 8 are provided on the regulating block 622, and the two through holes 8 are connected to the inside of the regulating block 622. A connecting pipe 9 is provided between adjacent regulating blocks 622, and the connecting pipe 9 is connected to adjacent regulating blocks 622 through the through hole 8. All regulating blocks 622 installed on the fixed frame 621 are connected to form a whole. The regulating blocks 622 at both ends have a through hole 8 connecting pipe 9 and a valve. The regulating block 622 is filled with a temperature control liquid through a pipeline. The temperature control liquid uses a liquid with a boiling point close to the temperature of the melting composite layer to control the temperature and reduce the excessive temperature to shrink or melt the film. The temperature control liquid introduced into the regulating block 622 is one third of the volume of the regulating block 622 and completely covers the electric heating rod 7. When the temperature control liquid reaches the required amount, the pressurized pipe 10 and the pressure relief pipe 11 are respectively connected to the regulating blocks 622 at both ends, and the pressurized pipe 10 and the pressure relief pipe 11 are respectively connected to the exhaust device and the blowing device. The air pressure in the regulating block 622 is controlled by blowing and exhausting. The boiling point of the temperature control liquid is adjusted by controlling the internal air pressure of the regulating block 622. The temperature control liquid can control the temperature of the regulating block 622 within a smaller range. The boiling point of the temperature control liquid is adjusted by adjusting the air pressure so that the temperature of the regulating block 622 will not exceed the boiling point of the control liquid, thereby reducing the probability that the temperature of the regulating block 622 causes the film to shrink or melt.The body 1 is fixedly provided with a support plate 23 on the side of the conveyor belt 61 away from the hot pressing plate 62. The support plate 23 can support the conveyor belt 61 and reduce the probability of deformation of the conveyor belt 61 caused by downward pressure of the hot pressing plate 62.

[0026] Reference Figure 1 and Figure 2 , an air pressure detection sensor 12 is arranged on the regulating block 622, the air pressure detection sensor 12 is inserted into the regulating block 622 and connected to the detection control unit, a temperature sensor 13 is arranged on the regulating block 622, and the temperature sensor 13 is connected to the detection control unit. The detection control unit in this embodiment is a general control unit that can receive electrical signals from the air pressure detection sensor 12 and the temperature sensor 13 and can control the blowing equipment and the exhaust equipment according to the detection results. A temperature value and an air pressure value are preset in the detection control unit. When the air pressure detection sensor 12 and the temperature sensor 13 can transmit the detected air pressure data and temperature data to the detection control unit in real time, when the detection control unit receives a signal that the temperature reaches the preset value, the boiling point of the temperature control liquid is lowered by adjusting the air pressure, thereby lowering the temperature of the regulating block 622. When the air pressure reaches the preset value, the composite pressure relief is stopped immediately or the pressure is increased to a safe value and then the composite processing is carried out after replacing the appropriate temperature control liquid.

[0027] Reference Figure 1 and Figure 2 A guide assembly 14 is provided on the machine body 1. The guide assembly 14 is provided between the film unwinding roller 3 and the composite mechanism 6. The guide assembly 14 includes an upper guide roller 141 and a lower guide roller 142. The upper guide roller 141 and the lower guide roller 142 are both rotatably provided on the machine body 1. The top of the lower guide roller 142 is flush with the upper surface of the conveyor belt 61. A guide block 15 is slidably provided on the machine body 1. The guide block 15 is slidably adjusted on the machine body 1 by an adjusting bolt 16. The adjusting bolt 16 is threadedly connected to the machine body 1 and rotatably installed on the guide block 15. The upper guide roller 141 is rotatably provided on the sliding block. The upper guide roller 141 is slidably provided on the machine body 1 through the guide block 15. The upper guide roller 141 slides toward or away from the lower guide roller 142. The guide roller can guide the film and the laser paper, shorten the distance between the film and the laser paper, and thus facilitate the composite mechanism 6 to composite.

[0028] Reference Figure 1 and Figure 5A compacting assembly 17 is arranged on the side of the composite mechanism 6 away from the film unwinding roller 3. The compacting assembly 17 includes an upper compacting roller 171 and a lower compacting roller 172. The upper compacting roller 171 and the lower compacting roller 172 are both rotatably arranged on the machine body 1. The top of the lower compacting roller 172 is flush with the upper surface of the conveyor belt 61. A compacting block 18 is slidably arranged on the machine body 1. A guide rod 19 is fixed on the compacting block 18. The guide rod 19 is slidably inserted on the machine body 1. The upper compacting roller 171 is rotatably arranged on the compacting block 18. The roller 171 is slidably arranged on the machine body 1 through the compacting block 18. The upper compacting roller 171 slides toward or away from the lower compacting roller 172. The compacting assembly 17 can compact the composite laser film to improve the composite firmness of the laser film. The upper guide roller 141 and the upper compacting roller 171 are rollers of the same diameter. A connecting rod 20 is arranged between the upper guide roller 141 and the upper compacting roller 171. One end of the connecting rod 20 is fixed to the compacting block 18, and the other end of the connecting rod 20 is fixed to the guide block 15. The connecting rod 20 drives the upper compacting roller 172 to move. The guide roller 141 and the upper compaction roller 171 slide synchronously, and the spacing between the upper compaction roller 171 and the lower compaction roller 172 and between the upper guide roller 141 and the lower guide roller 142 can be synchronously adjusted by setting the connecting rod 20, so as to facilitate the adjustment of the upper guide roller 141 and the upper compaction roller 171; the upper compaction roller 171 and the lower compaction roller 172 are uniformly hollow rollers, and the roller bodies are filled with coolant. The compaction rollers can perform heat exchange on the composite laser film while compacting, thereby reducing the temperature of the laser film and accelerating Cooling and solidification of the composite layer; a winding roller 21 is arranged on the side of the compaction component 17 that is rotatable away from the composite mechanism 6. The winding roller 21 can be mounted on the outside of the machine body 1 through an additional mounting frame 22, or can be mounted on the machine body 1 through a mounting frame 22 mounted on the machine head. The winding roller 21 is driven by a motor. In this embodiment, the mounting frame 22 slides vertically on the machine body 1 through a rodless cylinder, and the winding roller 21 that has wound up more laser film is lowered to the ground through the rodless cylinder, so that the laser film roll can be disassembled and replaced from the mounting frame 22 conveniently.

[0029] A laser film composite equipment and a control method for the composite equipment, which includes the following steps: S1: adjusting the height, adjusting the height of the upper compacting tube and the upper guide roller 141, so that the spacing between the upper guide roller 141 and the lower guide roller 142 and the spacing between the upper compacting roller 171 and the lower compacting roller 172 are the same as the thickness of the composite laser film; S2: installing the adjustment block 622, installing the adjustment block 622 at the position where hot pressing composite is required according to the actual composite situation, and connecting the adjustment blocks 622 through the connecting pipe 9, so that the adjustment blocks 622 at both ends are respectively connected to the pressurized pipe 10 and the pressure relief pipe 11; S3: temperature adjustment, according to the melting temperature of the composite layer, selecting a suitable temperature control liquid, and adjusting the pressure in the adjustment block 622 to adjust the boiling point of the temperature control liquid, so that The boiling point of the temperature control liquid is higher than the melting temperature of the composite layer and lower than the shrinkage temperature of the film and the laser paper; S4: unwinding, the film, composite layer and laser paper are unrolled separately, and enter the guide component 14 in the order of film, composite layer and laser paper from high to low; S5: guiding and compounding, the guide component 14 guides the film, composite layer and laser paper and then sends them into the compounding mechanism 6 for compounding. During compounding, the air pressure in the adjustment block 622 and the temperature of the adjustment block 622 are monitored in real time. When the temperature of the adjustment block 622 is higher than the preset temperature, the air pressure in the adjustment block 622 is reduced by vacuuming to lower the boiling point of the temperature control liquid, thereby reducing the temperature of the adjustment block 622; S6: compacting and winding, the composite laser film is compacted by the compacting component 17 and then wound by the winding roller 21.

[0030] The implementation principle of the embodiment of the present application is as follows: according to the thickness of the composite laser film, the height of the upper compacting roller 171 and the upper guide roller 141 is adjusted, and the adjustment block 622 is installed on the fixed frame 621 according to the composite requirements of the laser film. When the laser film is in sheets, four long strip-shaped adjustment blocks 622 can be selected to surround a rectangle to perform hot pressing composite on all sides of the laser film. The corresponding composite layer can also be selected in the form of a rectangular frame to reduce the use of materials and reduce costs. When the laser film needs to be composited as a whole, a larger width adjustment block 622 is selected to be combined into a larger block, and the pressing frequency of the hot pressing plate 62 is adjusted to make the entire laser film be hot pressed and composited. Once; the positions of the film unwinding roller 3 and the laser paper unwinding roller 5 can be interchanged, and the position of the composite layer unwinding roller 4 must be set between the film unwinding roller 3 and the laser paper unwinding roller 5; according to the melting point of the composite layer, a solution close to the melting point of the composite layer is selected as the temperature control liquid, and the boiling point of the temperature control liquid is controlled by air pressure to be 2-5°C higher than the melting point of the composite layer. At the same time, a temperature 5-7°C higher than the melting point of the composite layer is set as the preset value. When the temperature of the adjustment block 622 reaches the preset value, the boiling point of the temperature control liquid is lowered by reducing the pressure of the temperature control liquid, so that the adjustment block 622 is cooled to below the preset value, thereby reducing the probability of the adjustment block 622 being too hot, shrinking or melting the film.

[0031] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A laser film composite device, characterized in that: The invention comprises a machine body (1), wherein one side of the machine body (1) is provided with a film unwinding roller (3), a composite layer unwinding roller (4) and a laser paper unwinding roller (5), wherein the film unwinding roller (3), the composite layer unwinding roller (4) and the laser paper unwinding roller (5) are arranged on the machine body (1) in sequence and rotate along the height direction of the machine body (1), and a composite mechanism (6) is arranged on the side of the machine body (1) away from the film unwinding roller (3), wherein the composite mechanism (6) comprises a conveyor belt (61) and a hot pressing plate (62), wherein the conveyor belt (61) is arranged on the machine body (1) for conveying, and the conveyor belt (61) conveys in a direction away from the film unwinding roller (3), and the hot pressing plate (62) is arranged to slide directly above the conveyor belt (61), and the hot pressing plate (62) slides in a direction close to or away from the conveyor belt (61), and the hot pressing plate (62) has a temperature for melting the composite layer.

2. The laser film composite device according to claim 1, characterized in that: The hot pressing plate (62) comprises a fixed frame (621) and an adjusting block (622); the fixed frame (621) is slidably arranged on the machine body (1); there are a plurality of adjusting blocks (622); the plurality of adjusting blocks (622) are detachably mounted on the fixed frame (621); the positions of the adjusting blocks (622) mounted on the fixed frame (621) are not fixed; and the adjusting blocks (622) have a temperature for melting the composite layer.

3. The laser film composite device according to claim 2, characterized in that: The regulating block (622) is a hollow metal block, and an electric heating rod (7) is arranged inside the regulating block (622).

4. The laser film composite device according to claim 3, characterized in that: The regulating blocks (622) are each provided with two through holes (8), the two through holes (8) being connected to the interior of the regulating blocks (622), and connecting pipes (9) being provided between adjacent regulating blocks (622), the connecting pipes (9) being connected to adjacent regulating blocks (622) via the through holes (8).

5. The laser film composite device according to claim 4, characterized in that: The regulating block (622) is filled with a temperature control liquid, and the regulating blocks (622) on both sides are respectively connected to a pressurizing pipe (10) and a pressure relief pipe (11).

6. The laser film composite device according to claim 5, characterized in that: An air pressure detection sensor (12) is provided on the regulating block (622), and a temperature sensor (13) is provided on the regulating block (622).

7. The laser film composite device according to claim 6, characterized in that: The machine body (1) is provided with a guide assembly (14), the guide assembly (14) being arranged between the film unwinding roller (3) and the composite mechanism (6), the guide assembly (14) comprising an upper guide roller (141) and a lower guide roller (142), the upper guide roller (141) and the lower guide roller (142) both being rotatably arranged on the machine body (1), the top end of the lower guide roller (142) being flush with the upper surface of the conveyor belt (61), the upper guide roller (141) being slidably arranged on the machine body (1), and the upper guide roller (141) slidingly moving towards or away from the lower guide roller (142).

8. The laser film composite device according to claim 7, characterized in that: A compacting assembly (17) is arranged on the side of the composite structure (6) facing away from the film unwinding roller (3), and the compacting assembly (17) comprises an upper compacting roller (171) and a lower compacting roller (172), and the upper compacting roller (171) and the lower compacting roller (172) are both rotatably arranged on the machine body (1), and the top end of the lower compacting roller (172) is flush with the upper surface of the conveyor belt (61), and the upper compacting roller (171) is slidably arranged on the machine body (1), and the upper compacting roller (171) slides in a direction approaching or away from the lower compacting roller (172).

9. The laser film composite device according to claim 8, characterized in that: A connecting rod (20) is provided between the upper guide roller (141) and the upper compaction roller (171), and the connecting rod (20) drives the upper guide roller (141) and the upper compaction roller (171) to slide synchronously.

10. A laser film composite device and a control method of the composite device, used for the laser film composite device according to claim 9, comprising the following steps: S1: adjusting the height, adjusting the height of the upper compacting tube and the upper guide roller (141), so that the distance between the upper guide roller (141) and the lower guide roller (142) and the distance between the upper compacting roller (171) and the lower compacting roller (172) are the same as the thickness of the composite laser film; S2: installing the regulating blocks (622), and installing the regulating blocks (622) at positions where hot pressing and laminating are required according to actual laminating conditions, and connecting the regulating blocks (622) via connecting pipes (9), so that the regulating blocks (622) at both ends are respectively connected to the pressurizing pipe (10) and the pressure relief pipe (11); S3: temperature adjustment, selecting a suitable temperature control liquid according to the melting temperature of the composite layer, and adjusting the pressure in the adjustment block (622) to adjust the boiling point of the temperature control liquid, so that the boiling point of the temperature control liquid is higher than the melting temperature of the composite layer and lower than the shrinking temperature of the film and the laser paper; S4: unwinding, unwinding the film, the composite layer and the laser paper respectively, and the film, the composite layer and the laser paper enter the guide assembly (14) in the order from high to low; S5: guiding and laminating, the guiding component (14) guides the film, the composite layer and the laser paper and then feeds them into the laminating mechanism (6) for laminating; S6: compacting and winding, the composite laser film is compacted by a compacting component (17) and then wound by a winding roller (21).

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