Printing, packaging and film covering device and using method

Abstract

The invention discloses a printing and packaging film laminating device and a using method, and relates to the technical field of printing and packaging film laminating, the device comprises a box body, a hot-pressing laminating assembly is installed at the upper end of the box body, and a plastic film roll unwinding assembly is installed at the position, on one side of the input end of the hot-pressing laminating assembly, of the upper end of the box body; a printing packaging paper roll unwinding assembly is installed at the upper end of the box body on the side, away from the hot-pressing attaching assembly, of the plastic film roll unwinding assembly, a die cutting assembly is installed at the upper end of the box body on the side of the output end of the hot-pressing attaching assembly, and a waste winding assembly is installed on the side wall of the box body on the side of the output end of the die cutting assembly. According to the device, chippings and dust on the printing packaging paper are cleaned through a cleaning block, the chippings and dust are prevented from influencing film covering of the printing packaging paper, under the action of a compressor and an expansion valve, an evaporator absorbs heat in a heat dissipation frame to cool the printing packaging paper processed by a hot-pressing laminating assembly, and the heat dissipation efficiency is improved. And the condenser preheats the printed packaging paper coated with the film.

Description

Technical Field

[0001] The invention relates to the technical field of printing and packaging laminating, and in particular to a printing and packaging laminating device and a use method thereof. Background Art

[0002] Package printing is the printing on various packaging materials, with decorative patterns, designs or words printed on the packaging to make the product more attractive or more descriptive, thereby conveying information and increasing sales. The printed packaging after lamination can enhance the gloss, fastness and visual effect.

[0003] The existing printing and packaging laminating device generally installs the printed rolled packaging paper on the input end of the laminating equipment to transport the printed packaging paper. However, since the printed dye has a certain viscosity and the printed packaging papers will be squeezed against each other after being rolled, if debris enters the printed packaging paper, the debris can easily be firmly fixed on the printed packaging paper. General suction and sweeping equipment cannot clean such stubborn debris, affecting the subsequent lamination of the printed packaging paper.

[0004] In view of the above problems, an improved printing and packaging laminating device and a method of use are now designed. Summary of the invention

[0005] The object of the present invention is to provide a printing and packaging laminating device and a method of use to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A printing and packaging laminating device comprises a box body, the upper end of which is equipped with a hot pressing laminating assembly for fixing and laminating the printing and packaging paper and the film together, the upper end of the box body on the input end side of the hot pressing laminating assembly is equipped with a plastic film roll unwinding assembly, the upper end of the box body on the side of the plastic film roll unwinding assembly away from the hot pressing laminating assembly is equipped with a printing and packaging paper roll unwinding assembly, the upper end of the box body on the output end side of the hot pressing laminating assembly is equipped with a die-cutting assembly for die-cutting the printed and packaging paper after lamination, and a waste material rewinding assembly for rewinding the waste material after die-cutting is installed on the side wall of the box body on the output end side of the die-cutting assembly, and the printing and packaging paper roll unwinding assembly The components, plastic film roll unwinding component, hot pressing laminating component, die-cutting component and waste material winding component all adopt existing technologies and are not described in detail. A cleaning frame is installed at the upper end of the box between the printed packaging paper roll unwinding component and the plastic film roll unwinding component, and a laminating preheating frame is installed at the upper end of the box between the plastic film roll unwinding component and the hot pressing laminating component. A cleaning mechanism for cleaning debris and dust on the printed packaging paper is arranged inside the cleaning frame, a liquid spraying mechanism for spraying coating liquid is arranged on the cleaning frame and the laminating preheating frame, and a cooling preheating mechanism for cooling the printed packaging after hot pressing is arranged between the hot pressing laminating component and the die-cutting component.

[0008] As a further solution of the present invention: the cleaning mechanism includes an elastic telescopic rod, which is vertically installed on the top of the cleaning frame, and a mounting plate is horizontally installed on the output end of the elastic telescopic rod, and a limit rod is horizontally installed on the side wall of the mounting plate facing the printed packaging paper roll unwinding assembly, and a baffle is installed on the end of the limit rod away from the mounting plate, and a second sliding plate is arranged on the limit rod, and a cleaning block for cleaning debris and dust on the printed packaging paper is installed at the lower end of the second sliding plate, and an alarm mechanism is arranged on the limit rod for alarming when encountering debris stuck on the printed packaging paper.

[0009] As a further solution of the present invention: a triangular supporting rib is provided at the connection between the elastic telescopic rod and the top of the cleaning frame for stably connecting the elastic telescopic rod and the cleaning frame.

[0010] As a further solution of the present invention: the alarm mechanism includes a first sliding plate, the second sliding plate is slidably sleeved on the side wall of the limit rod, the first sliding plate is slidably sleeved on the side wall of the limit rod between the second sliding plate and the mounting plate, a spring is sleeved on the limit rod between the first sliding plate and the second sliding plate, the two ends of the spring are respectively mounted on the first sliding plate and the second sliding plate, a pressure sensor is installed on the side wall of the mounting plate close to the first sliding plate, the first sliding plate is pressed tightly against the detection end of the pressure sensor, and an alarm for receiving the pressure sensor signal is installed on the upper end of the cleaning frame.

[0011] As a further solution of the present invention: the liquid spraying mechanism comprises a coating liquid delivery pipe rack, which is vertically installed on the top of the cleaning frame on one side close to the plastic film roll and unwinding assembly, the input end of the coating liquid delivery pipe rack is connected to the coating liquid delivery equipment through a pipeline, and several output ends of the coating liquid delivery pipe rack are equipped with coating liquid nozzles for spraying coating liquid, and an electric-controlled valve is installed on the pipeline at the input end of the coating liquid nozzle, an upper bonding block is horizontally installed on one side of the bonding preheating frame close to the plastic film roll and unwinding assembly, a lower bonding block used in conjunction with the upper bonding block is horizontally installed on the inner wall of the bonding preheating frame directly below the upper bonding block, and a liquid collecting frame for receiving squeezed overflow coating liquid is installed inside the bonding preheating frame below the lower bonding block.

[0012] As a further solution of the present invention: a smooth elastic silicone pad for pushing the printed packaging paper and the film is installed on the upper end of the lower laminating block.

[0013] As a further scheme of the present invention: the cooling and preheating mechanism includes an expansion valve and a compressor, a heat dissipation frame is installed on the upper end of the box between the hot pressing and laminating components, two evaporators are horizontally installed inside the heat dissipation frame, and the two evaporators are arranged on the upper and lower sides of the printed packaging paper after lamination, two condensers are installed inside the laminating and preheating frame close to the hot pressing and laminating component, and the two condensers are arranged on the upper and lower sides of the printed packaging paper after lamination, the expansion valve and the compressor are both installed inside the box, the input end of the condenser is connected to the output end of the compressor through a pipeline, the output end of the condenser is connected to the input end of the expansion valve through a pipeline, the output end of the evaporator is connected to the input end of the compressor through a pipeline, and the input end of the evaporator is connected to the output end of the expansion valve through a pipeline.

[0014] As a further solution of the present invention: the condenser and the evaporator are respectively supported and fixed on the inner walls of the preheating frame and the heat dissipation frame through pipe clamps.

[0015] As a further solution of the present invention: exhaust fans for timely exhausting hot air are provided on both sides of the upper end of the heat pressing bonding component.

[0016] A method for using a printing and packaging laminating device comprises the following steps:

[0017] Step 1: The printed packaging paper on the printed packaging paper roll unwinding assembly passes through the lower end of the cleaning block, the lower end of the coating liquid nozzle, between the upper laminating block and the lower laminating block, between the two condensers, the hot pressing laminating assembly, between the two evaporators, and the die-cutting assembly in sequence. At the same time, the coating on the plastic film roll unwinding assembly passes through the upper laminating block and the lower laminating block, between the two condensers, the hot pressing laminating assembly, between the two evaporators, and the die-cutting assembly in sequence. The printed packaging paper is initially laminated between the upper laminating block and the lower laminating block. After die-cutting by the die-cutting assembly, the waste is rolled up by the waste winding assembly, which provides moving force for the printed packaging paper and the film.

[0018] Step 2: When the printed wrapping paper enters the cleaning frame, under the action of elastic force, the elastic telescopic rod pushes the mounting plate to move downward, the mounting plate drives the limiting rod to move downward, the limiting rod drives the second sliding plate and the cleaning block to move downward, so that the cleaning block is tightly attached to the upper end of the printed wrapping paper, and as the printed wrapping paper moves, the cleaning block cleans the debris and dust on the printed wrapping paper.

[0019] When debris that cannot be easily cleaned is stuck on the printed packaging paper, the debris will push the cleaning block to move, and the cleaning block will drive the second sliding plate to move. The second sliding plate compresses the push spring, and the spring pushes the first sliding plate to move. The first sliding plate squeezes the pressure sensor, causing the pressure value detected by the pressure sensor to increase. When it is greater than the set value, the pressure sensor sends a signal to the alarm, causing the alarm to sound and reminding the staff to handle it.

[0020] Step 3: The coating liquid conveying equipment conveys the coating liquid to the coating liquid conveying pipe rack and the coating liquid nozzle. The coating liquid nozzle sprays the coating liquid onto the printed packaging paper. The printed packaging paper and the film are bonded together between the upper bonding block and the lower bonding block. The coating liquid that is squeezed out flows along the side wall of the lower bonding block to the inside of the liquid collecting frame.

[0021] Step 4: The compressor compresses the refrigerant into high-temperature and high-pressure gas, causing it to release heat in the condenser to preheat the printed packaging paper after lamination. The paper then enters the evaporator at a reduced pressure and becomes low-temperature and low-pressure gas, thereby absorbing the heat around the evaporator to achieve refrigeration inside the heat dissipation frame.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention cleans the debris and dust on the printed packaging paper by means of a cleaning block, thereby preventing the debris and dust from affecting the lamination of the printed packaging paper and improving the lamination quality of the printed packaging paper.

[0024] At the same time, when encountering firmly stuck debris, the debris will push the cleaning block to move, and the cleaning block drives the second sliding plate, the spring, and the first sliding plate to squeeze the pressure sensor. When the extrusion pressure is greater than the equipment value, the machine will stop and the alarm will sound, reminding the staff to handle it.

[0025] Under the action of the compressor and the expansion valve, the evaporator of the present invention absorbs the heat inside the heat dissipation frame to cool the printed packaging paper after the hot pressing and laminating assembly is processed, and the condenser preheats the printed packaging paper after the lamination, thereby improving the efficiency of the hot pressing processing of the hot pressing and laminating assembly.

[0026] The present invention controls the number of coating liquid nozzles opened according to the width of the printed packaging paper to avoid waste of coating liquid. At the same time, the coating liquid that is squeezed and overflowed is collected by the lower bonding block to avoid the coating liquid from polluting the surrounding environment of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the cleaning mechanism in the present invention.

[0029] Figure 3 It is a schematic diagram of the structure of the cooling and preheating mechanism in the present invention.

[0030] Figure 4 It is a schematic diagram of the structure of the interior of the preheating frame in the present invention.

[0031] Wherein: 1. Box body; 2. Printing and packaging paper roll unwinding assembly; 3. Alarm; 4. Cleaning frame; 5. Coating liquid delivery pipe rack; 6. Plastic film roll unwinding assembly; 7. Upper laminating block; 8. Laminating preheating frame; 9. Hot pressing laminating assembly; 10. Evaporator; 11. Heat dissipation frame; 12. Die-cutting assembly; 13. Waste material winding assembly; 14. Lower laminating block; 15. Liquid collecting frame; 16. Electric control valve; 17. Coating liquid nozzle; 18. Mounting plate; 19. First sliding plate; 20. Limit rod; 21. Cleaning block; 22. Second sliding plate; 23. Baffle; 24. Spring; 25. Pressure sensor; 26. Elastic telescopic rod; 27. Expansion valve; 28. Compressor; 29. ​​Condenser. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 4 In an embodiment of the present invention, a printing and packaging laminating device includes a box body 1, a hot pressing laminating component 9 for fixing and laminating printing and packaging paper and a film together is installed on the upper end of the box body 1, a plastic film roll unwinding component 6 is installed on the upper end of the box body 1 on the input end side of the hot pressing laminating component 9, a printing and packaging paper roll unwinding component 2 is installed on the upper end of the box body 1 on the side of the plastic film roll unwinding component 6 away from the hot pressing laminating component 9, a die-cutting component 12 for die-cutting the printed and packaging paper after lamination is installed on the upper end of the box body 1 on the output end side of the hot pressing laminating component 9, a waste material rewinding component 13 for rewinding the waste material after die-cutting is installed on the side wall of the box body 1 on the output end side of the die-cutting component 12, and the printed and packaging paper roll unwinding component 2 is installed on the upper end of the box body 1 on the output end side of the die-cutting component 12. The unwinding assembly 2, the plastic film roll unwinding assembly 6, the hot pressing laminating assembly 9, the die-cutting assembly 12, and the waste material winding assembly 13 all adopt the existing technology and are not described in detail. A cleaning frame 4 is installed on the upper end of the box body 1 between the printed packaging paper roll unwinding assembly 2 and the plastic film roll unwinding assembly 6, and a laminating preheating frame 8 is installed on the upper end of the box body 1 between the plastic film roll unwinding assembly 6 and the hot pressing laminating assembly 9. A cleaning mechanism for cleaning debris and dust on the printed packaging paper is arranged inside the cleaning frame 4, and a spray mechanism for spraying coating liquid is arranged on the cleaning frame 4 and the laminating preheating frame 8. A cooling and preheating mechanism for cooling the printed packaging after hot pressing is arranged between the hot pressing laminating assembly 9 and the die-cutting assembly 12.

[0034] The cleaning mechanism includes an elastic telescopic rod 26, which is vertically mounted on the top of the cleaning frame 4, and a mounting plate 18 is horizontally mounted on the output end of the elastic telescopic rod 26. A limit rod 20 is horizontally mounted on the side wall of the mounting plate 18 facing the printing and packaging paper roll unwinding assembly 2, and a baffle 23 is mounted on the end of the limit rod 20 away from the mounting plate 18. A second sliding plate 22 is arranged on the limit rod 20, and a cleaning block 21 for cleaning debris and dust on the printing and packaging paper is installed at the lower end of the second sliding plate 22. The limit rod 20 is provided with an alarm mechanism for alarming when encountering debris stuck on the printing and packaging paper.

[0035] The alarm mechanism includes a first sliding plate 19, the second sliding plate 22 is slidably sleeved on the side wall of the limiting rod 20, the first sliding plate 19 is slidably sleeved on the side wall of the limiting rod 20 between the second sliding plate 22 and the mounting plate 18, a spring 24 is sleeved on the limiting rod 20 between the first sliding plate 19 and the second sliding plate 22, and the two ends of the spring 24 are respectively mounted on the first sliding plate 19 and the second sliding plate 22, a pressure sensor 25 is installed on the side wall of the mounting plate 18 close to the first sliding plate 19, the first sliding plate 19 is pressed tightly against the detection end of the pressure sensor 25, and an alarm 3 for receiving the signal of the pressure sensor 25 is installed on the upper end of the cleaning frame 4.

[0036] When in use, under the action of elastic force, the elastic telescopic rod 26 pushes the mounting plate 18 to move downward, the mounting plate 18 drives the limiting rod 20 to move downward, the limiting rod 20 drives the second sliding plate 22 and the cleaning block 21 to move downward, so that the cleaning block 21 is tightly attached to the upper end of the printed packaging paper. As the printed packaging paper moves, the cleaning block 21 cleans the debris and dust on the printed packaging paper.

[0037] When debris that cannot be easily cleaned is stuck and fixed on the printed packaging paper, the debris will push the cleaning block 21 to move, and the cleaning block 21 will drive the second sliding plate 22 to move. The second sliding plate 22 compresses the pushing spring 24, and the spring 24 pushes the first sliding plate 19 to move. The first sliding plate 19 squeezes the pressure sensor 25, so that the pressure value detected by the pressure sensor 25 becomes larger. When it is greater than the set value, the pressure sensor 25 sends a signal to the alarm 3, causing the alarm 3 to sound an alarm and reminding the staff to handle it.

[0038] The liquid spraying mechanism comprises a coating liquid conveying pipe rack 5, which is vertically mounted on the top of the cleaning frame 4 on one side close to the plastic film reel unwinding assembly 6, the input end of the coating liquid conveying pipe rack 5 is connected to the coating liquid conveying equipment through a pipeline, and several output ends of the coating liquid conveying pipe rack 5 are equipped with coating liquid nozzles 17 for spraying coating liquid, and an electric control valve 16 is installed on the pipeline at the input end of the coating liquid nozzle 17, and an upper bonding block 7 is horizontally mounted on the side of the bonding preheating frame 8 close to the plastic film reel unwinding assembly 6, and a lower bonding block 14 used in conjunction with the upper bonding block 7 is horizontally mounted on the inner wall of the bonding preheating frame 8 directly below the upper bonding block 7, and a smooth elastic silicone pad for pushing the printed packaging paper and the film is installed on the upper end of the lower bonding block 14, and a liquid collecting frame 15 for receiving the extruded overflowed coating liquid is installed inside the bonding preheating frame 8 below the lower bonding block 14.

[0039] Before use, the number of openings of the electric control valve 16 is controlled according to the width of the printed packaging paper. When in use, the coating liquid delivery device delivers the coating liquid to the coating liquid delivery pipe rack 5 and the coating liquid nozzle 17. The coating liquid nozzle 17 sprays the coating liquid onto the printed packaging paper. The printed packaging paper and the film are bonded together between the upper bonding block 7 and the lower bonding block 14. The coating liquid that is squeezed out flows along the side wall of the lower bonding block 14 to the inside of the liquid collecting frame 15.

[0040] The cooling and preheating mechanism includes an expansion valve 27 and a compressor 28. A heat dissipation frame 11 is installed at the upper end of the box body 1 between the hot pressing and laminating component 9 and the die-cutting component 12. Two evaporators 10 are horizontally installed inside the heat dissipation frame 11. The two evaporators 10 are arranged on the upper and lower sides of the printed packaging paper after lamination. Two condensers 29 are installed inside the laminating and preheating frame 8 near the side of the hot pressing and laminating component 9. The two condensers 29 are arranged on the upper and lower sides of the printed packaging paper after lamination. The expansion valve 27 and the compressor 28 are both installed inside the box body 1. The input end of the condenser 29 is connected to the output end of the compressor 28 through a pipeline, the output end of the condenser 29 is connected to the input end of the expansion valve 27 through a pipeline, the output end of the evaporator 10 is connected to the input end of the compressor 28 through a pipeline, and the input end of the evaporator 10 is connected to the output end of the expansion valve 27 through a pipeline.

[0041] When in use, the compressor 28 compresses the refrigerant into a high-temperature and high-pressure gas, causing it to release heat in the condenser 29, thereby preheating the printed packaging paper after coating. The refrigerant is then depressurized by the coating liquid nozzle 17 and enters the evaporator 10 to become a low-temperature and low-pressure gas, thereby absorbing the heat around the evaporator 10 to achieve refrigeration inside the heat dissipation frame 11.

[0042] Working principle of a printing and packaging laminating device:

[0043] Before use, the printed packaging paper on the printed packaging paper roll unwinding assembly 2 passes through the lower end of the cleaning block 21, the lower end of the coating liquid nozzle 17, between the upper laminating block 7 and the lower laminating block 14, between the two condensers 29, the hot pressing laminating assembly 9, between the two evaporators 10, and the die-cutting assembly 12 in sequence. At the same time, the coating on the plastic film roll unwinding assembly 6 passes through the upper laminating block 7 and the lower laminating block 14, between the two condensers 29, the hot pressing laminating assembly 9, between the two evaporators 10, and the die-cutting assembly 12 in sequence. The printed packaging paper is preliminarily coated between the upper laminating block 7 and the lower laminating block 14. After die-cutting by the die-cutting assembly 12, the waste is rolled up by the waste winding assembly 13, which provides moving force for the printed packaging paper and the film.

[0044] When the printed wrapping paper enters the cleaning frame 4, under the action of elastic force, the elastic telescopic rod 26 pushes the mounting plate 18 to move downward, the mounting plate 18 drives the limiting rod 20 to move downward, the limiting rod 20 drives the second sliding plate 22 and the cleaning block 21 to move downward, so that the cleaning block 21 is tightly attached to the upper end of the printed wrapping paper. As the printed wrapping paper moves, the cleaning block 21 cleans the debris and dust on the printed wrapping paper.

[0045] When debris that cannot be easily cleaned is stuck and fixed on the printed packaging paper, the debris will push the cleaning block 21 to move, and the cleaning block 21 will drive the second sliding plate 22 to move. The second sliding plate 22 compresses the pushing spring 24, and the spring 24 pushes the first sliding plate 19 to move. The first sliding plate 19 squeezes the pressure sensor 25, so that the pressure value detected by the pressure sensor 25 becomes larger. When it is greater than the set value, the pressure sensor 25 sends a signal to the alarm 3, causing the alarm 3 to sound an alarm and reminding the staff to handle it.

[0046] At the same time, the coating liquid conveying equipment conveys the coating liquid to the coating liquid conveying pipe rack 5 and the coating liquid nozzle 17, and the coating liquid nozzle 17 sprays the coating liquid onto the printed packaging paper. The printed packaging paper and the film are bonded together between the upper bonding block 7 and the lower bonding block 14, and the coating liquid that is squeezed out flows along the side wall of the lower bonding block 14 to the inside of the liquid collecting frame 15.

[0047] At the same time, the compressor 28 compresses the refrigerant into a high-temperature and high-pressure gas, causing it to release heat in the condenser 29, thereby preheating the printed packaging paper after coating. The refrigerant is then depressurized by the coating liquid nozzle 17 and enters the evaporator 10 to become a low-temperature and low-pressure gas, thereby absorbing the heat around the evaporator 10 to achieve refrigeration inside the heat dissipation frame 11.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A printing and packaging laminating device, comprising a box body (1), wherein a hot pressing and laminating assembly (9) for fixing and laminating printed packaging paper and film together is installed at the upper end of the box body (1), a plastic film unwinding assembly (6) is installed at the upper end of the box body (1) on the input end side of the hot pressing and laminating assembly (9), a printing and packaging paper unwinding assembly (2) is installed at the upper end of the box body (1) on the side of the plastic film unwinding assembly (6) away from the hot pressing and laminating assembly (9), a die-cutting assembly (12) for die-cutting the printed packaging paper after lamination is installed at the upper end of the box body (1) on the output end side of the hot pressing and laminating assembly (9), and a waste material rewinding assembly (13) for rewinding waste material after die-cutting is installed on the side wall of the box body (1) on the output end side of the die-cutting assembly (12), characterized in that: A cleaning frame (4) is installed at the upper end of the box body (1) between the printed packaging paper roll unwinding assembly (2) and the plastic film roll unwinding assembly (6); a laminating preheating frame (8) is installed at the upper end of the box body (1) between the plastic film roll unwinding assembly (6) and the hot pressing laminating assembly (9); a cleaning mechanism for cleaning debris and dust on the printed packaging paper is arranged inside the cleaning frame (4); a liquid spraying mechanism for spraying coating liquid is arranged on the cleaning frame (4) and the laminating preheating frame (8); and a cooling preheating mechanism for cooling the printed packaging after hot pressing is arranged between the hot pressing laminating assembly (9) and the die cutting assembly (12).

2. A printing and packaging laminating device according to claim 1, characterized in that: The cleaning mechanism comprises an elastic telescopic rod (26), the elastic telescopic rod (26) being vertically mounted on the top of the cleaning frame (4), a mounting plate (18) being horizontally mounted on the output end of the elastic telescopic rod (26), a limiting rod (20) being horizontally mounted on the side wall of the mounting plate (18) facing the printing and packaging paper roll unwinding assembly (2), a baffle plate (23) being mounted on the end of the limiting rod (20) away from the mounting plate (18), a second sliding plate (22) being arranged on the limiting rod (20), a cleaning block (21) for cleaning debris and dust on the printing and packaging paper being mounted on the lower end of the second sliding plate (22), and an alarm mechanism for giving an alarm when encountering debris stuck on the printing and packaging paper being arranged on the limiting rod (20).

3. A printing and packaging laminating device according to claim 2, characterized in that: A triangular supporting rib plate is provided at the connection point between the elastic telescopic rod (26) and the top of the cleaning frame (4) for stably connecting the elastic telescopic rod (26) and the cleaning frame (4).

4. A printing and packaging laminating device according to claim 2, characterized in that: The alarm mechanism comprises a first sliding plate (19), the second sliding plate (22) is slidably sleeved on the side wall of the limiting rod (20), the first sliding plate (19) is slidably sleeved on the side wall of the limiting rod (20) between the second sliding plate (22) and the mounting plate (18), a spring (24) is sleeved on the limiting rod (20) between the first sliding plate (19) and the second sliding plate (22), two ends of the spring (24) are respectively mounted on the first sliding plate (19) and the second sliding plate (22), a pressure sensor (25) is mounted on the side wall of the mounting plate (18) close to the first sliding plate (19), the first sliding plate (19) is pressed tightly against the detection end of the pressure sensor (25), and an alarm (3) for receiving a signal from the pressure sensor (25) is mounted on the upper end of the cleaning frame (4).

5. The printing and packaging laminating device according to claim 1, characterized in that: The liquid spraying mechanism comprises a coating liquid delivery pipe rack (5), the coating liquid delivery pipe rack (5) is vertically mounted on the top of the cleaning frame (4) on one side close to the plastic film reel unwinding assembly (6), the input end of the coating liquid delivery pipe rack (5) is connected to the coating liquid delivery device through a pipeline, a plurality of output ends of the coating liquid delivery pipe rack (5) are all equipped with coating liquid spray heads (17) for spraying coating liquid, an electric control valve (16) is installed on the pipeline at the input end of the coating liquid spray head (17), an upper bonding block (7) is horizontally mounted on one side of the bonding preheating frame (8) close to the plastic film reel unwinding assembly (6), a lower bonding block (14) used in conjunction with the upper bonding block (7) is horizontally mounted on the inner wall of the bonding preheating frame (8) directly below the upper bonding block (7), and a liquid collecting frame (15) for receiving the coating liquid that overflows from the bonding preheating frame (8) below the lower bonding block (14) is installed inside the bonding preheating frame (8) below the lower bonding block (14) 6. A printing and packaging laminating device according to claim 5, characterized in that: The upper end of the lower laminating block (14) is provided with a smooth elastic silica gel pad for pushing the printed packaging paper and the film.

7. The printing and packaging laminating device according to claim 1, characterized in that: The cooling and preheating mechanism comprises an expansion valve (27) and a compressor (28); a heat dissipation frame (11) is installed at the upper end of the box body (1) between the hot pressing and laminating assembly (9) and the die cutting assembly (12); two evaporators (10) are installed horizontally inside the heat dissipation frame (11); the two evaporators (10) are arranged on the upper and lower sides of the printed packaging paper after lamination; two condensers (29) are installed inside the laminating and preheating frame (8) near the hot pressing and laminating assembly (9); the two condensers (29) are arranged The expansion valve (27) and the compressor (28) are both installed inside the box (1), the input end of the condenser (29) is connected to the output end of the compressor (28) through a pipeline, the output end of the condenser (29) is connected to the input end of the expansion valve (27) through a pipeline, the output end of the evaporator (10) is connected to the input end of the compressor (28) through a pipeline, and the input end of the evaporator (10) is connected to the output end of the expansion valve (27) through a pipeline.

8. The printing and packaging laminating device according to claim 7, characterized in that: The condenser (29) and the evaporator (10) are respectively supported and fixed on the inner walls of the preheating frame (8) and the heat dissipation frame (11) by means of pipe hoop supports.

9. The printing and packaging laminating device according to claim 1, characterized in that: Both sides of the upper end of the heat-pressing laminating component (9) are provided with exhaust fans for timely exhausting hot air.

10. A method for using the printing and packaging laminating device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The printed packaging paper on the printed packaging paper roll unwinding assembly (2) passes through the lower end of the cleaning block (21), the lower end of the coating liquid nozzle (17), between the upper bonding block (7) and the lower bonding block (14), between the two condensers (29), the hot pressing bonding assembly (9), between the two evaporators (10), and the die-cutting assembly (12) in sequence. At the same time, the coating on the plastic film roll unwinding assembly (6) passes through the upper bonding block (7) and the lower bonding block (14), between the two condensers (29), the hot pressing bonding assembly (9), between the two evaporators (10), and the die-cutting assembly (12) in sequence. The printed packaging paper is initially coated between the upper bonding block (7) and the lower bonding block (14). After die-cutting by the die-cutting assembly (12), the waste is rolled up by the waste winding assembly (13), and at the same time, a moving force is provided for the printed packaging paper and the film. Step 2: When the printed packaging paper enters the cleaning frame (4), the elastic telescopic rod (26) pushes the mounting plate (18) to move downward under the action of elastic force, the mounting plate (18) drives the limiting rod (20) to move downward, the limiting rod (20) drives the second sliding plate (22) and the cleaning block (21) to move downward, so that the cleaning block (21) is closely attached to the upper end of the printed packaging paper, and as the printed packaging paper moves, the cleaning block (21) cleans the debris and dust on the printed packaging paper; When debris that cannot be easily cleaned is stuck and fixed on the printed packaging paper, the debris will push the cleaning block (21) to move, the cleaning block (21) drives the second sliding plate (22) to move, the second sliding plate (22) compresses the pushing spring (24), the spring (24) pushes the first sliding plate (19) to move, the first sliding plate (19) squeezes the pressure sensor (25), so that the pressure value detected by the pressure sensor (25) increases, and when it is greater than the set value, the pressure sensor (25) sends a signal to the alarm (3), so that the alarm (3) alarms and reminds the staff to handle it; Step 3: The coating liquid conveying device conveys the coating liquid to the coating liquid conveying pipe rack (5) and the coating liquid nozzle (17), and the coating liquid nozzle (17) sprays the coating liquid onto the printed packaging paper. The printed packaging paper and the film are bonded together between the upper bonding block (7) and the lower bonding block (14), and the coating liquid that is squeezed out flows along the side wall of the lower bonding block (14) to the inside of the liquid collecting frame (15); Step 4: The compressor (28) compresses the refrigerant into a high-temperature and high-pressure gas, causing it to release heat in the condenser (29) to preheat the printed packaging paper after lamination. The refrigerant is then depressurized by the laminating liquid nozzle (17) and enters the evaporator (10) to become a low-temperature and low-pressure gas, thereby absorbing the heat around the evaporator (10) to achieve refrigeration inside the heat dissipation frame (11).

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