Compound equipment for film coating processing of soft package material

Abstract

The utility model provides a compound device for soft package material laminating processing, which comprises a rack, and an unwinding assembly, a coating press-fit assembly, a multi-section press-fit assembly, a drying assembly, a cooling assembly and a winding roller which are sequentially arranged along a feeding direction and are connected with the rack, the multi-section press-fit assembly comprises a first press-fit assembly, a second press-fit assembly and a third press-fit assembly which are sequentially arranged in parallel from top to bottom, the drying assembly and the cooling assembly are arranged below the third press-fit assembly, and the unwinding assembly and the winding roller are arranged in parallel; the unwinding assembly and the winding roller are arranged on the left side of the multi-section pressing assembly and are movably connected with the rack, and the equipment can adapt to different aluminum foil and paper compounding processes through mutual cooperation of the unwinding assembly, the coating pressing assembly, the multi-section pressing assembly, the drying assembly, the cooling assembly and the winding roller.

Description

Technical Field

[0001] The utility model relates to the technical field of film laminating equipment, in particular to a composite equipment for film laminating processing of soft package materials. Background Technique

[0002] The film laminating process is a processing technology that covers a composite film on the surface of materials such as paper, cloth, and leather, and makes them tightly bonded together through hot pressing or adhesives. When packaging cigarettes, the cigarettes will be packaged in a customized cigarette case. At the same time, a protective material composed of a soft package material and a metal foil will be arranged between the cigarette case and the cigarettes. The soft package materials include base paper, PET film, OPP base film, etc., and the metal foils include aluminum foil and gold foil. The most common protective material used in cigarette packaging boxes is composite aluminum foil paper, which is composed of paper and aluminum foil through a composite equipment. The film laminating process can produce composite aluminum foil paper for the inner lining of cigarette packaging. The composite aluminum foil paper has the functions of preserving the fragrance, preventing mildew, blocking light and gas of cigarettes, and can play a role in protecting tobacco products to a certain extent. In the existing composite equipment, the composite method of aluminum foil and paper is a one-step forming processing method of pressing - drying - winding. However, for this traditional composite equipment, the composite methods and process parameters that can be provided are relatively fixed, and there is only one pressing. When facing the composite of aluminum foils and papers of different specifications, there may be unstable pressing quality of the aluminum foil composite paper and delamination occurs.

[0003] Based on the above situation, in the prior art, the patent with the publication number of CN209904181U discloses a composite machine for covering paper on the surface of aluminum foil, including a frame, a material rack, an electric winding roller, an aluminum foil shaft and a paper covering shaft. On one side of the top of the frame, a material rack is fixedly arranged. On the other side of the top of the frame, an electric winding roller is fixedly arranged. An aluminum foil shaft is arranged on the surface of the material rack, and a paper covering shaft is arranged on one side of the top of the aluminum foil shaft. A first support is arranged on one side of the frame. This composite machine can effectively remove dust from the bonding surfaces of the aluminum foil and the paper covering through a dust suction nozzle and a dust collector. Through a pump, the glue in the glue bucket can be effectively conveyed to the nozzle, so as to spray the bonding surfaces of the aluminum foil and the paper covering. Through the electric hydraulic telescopic rod on the pre-pressing support, the working position of its corresponding bearing seat can be effectively adjusted to facilitate the extrusion of the aluminum foil paper by the extrusion roller. The aluminum foil paper is secondarily extruded by the extrusion equipment on the final pressing support, and is suitable for being widely promoted and used.

[0004] However, the composite machine in this patent still has some deficiencies in combination with the actual situation. The composite method used in the above equipment is a composite form of pressing - drying - pressing - winding. Compared with single pressing, an additional pressing step is added, which increases the bonding degree of the aluminum foil and the paper to a certain extent. However, this composite form makes the equipment may not be able to adapt to the characteristic changes of the aluminum foil and the paper in different pressing stages, resulting in insufficient bonding between the aluminum foil and the paper, and the composite aluminum foil paper has problems of insufficient structural strength. Summary of the Utility Model

[0005] In view of the technical defects existing in the background art, the present utility model proposes a composite device for laminating soft package materials. In order to further solve the above technical problems and meet the actual needs, the specific technical solutions are as follows:

[0006] A composite device for laminating soft package materials, comprising a frame, a unwinding assembly, a coating and pressing assembly, a multi-stage pressing assembly, a drying assembly, a cooling assembly, and a winding roller, which are sequentially arranged along the material feeding direction and connected to the frame. The multi-stage pressing assembly includes a first pressing assembly, a second pressing assembly, and a third pressing assembly. The first pressing assembly, the second pressing assembly, and the third pressing assembly are arranged in parallel from top to bottom. The drying assembly and the cooling assembly are arranged below the third pressing assembly. The unwinding assembly and the winding roller are arranged in parallel, and the unwinding assembly and the winding roller are arranged on the left side of the multi-stage pressing assembly and are movably connected to the frame.

[0007] Furthermore, the structures of the first pressing assembly, the second pressing assembly, and the third pressing assembly are the same. The multi-stage pressing assembly includes a tension adjusting assembly, a first heating plate, and a pressing component. The first heating plate is arranged parallel up and down. The tension adjusting assembly is symmetrically arranged on the left and right sides of the first heating plate. The pressing component is arranged between the tension adjusting assemblies and is placed on the discharging side of the first heating plate.

[0008] Furthermore, the tension adjusting assembly includes tension detection rollers and tension adjusting rollers that are symmetrically arranged on both sides of the first heating plate in sequence. The two ends of the tension adjusting roller are provided with first electric cylinders that are movably connected. The cylinder body ends of the first electric cylinders are fixedly connected to the frame. The two ends of the tension adjusting roller are movably sleeved with movable sleeves. The telescopic rod ends of the first electric cylinders are fixedly connected to the movable sleeves. The two ends of the tension detection roller are movably connected to the frame. At the position of the movable sleeve on the frame, there are corresponding lifting chutes that can cooperate with the movable sleeve to slide up and down.

[0009] Furthermore, the pressing component includes an upper pressing roller, a lower pressing roller, and a second electric cylinder. The upper pressing roller and the lower pressing roller are arranged parallel up and down. The two ends of the upper pressing roller are respectively provided with upper fixed shaft sleeves that are movably connected. The two ends of the lower pressing roller are respectively provided with lower fixed shaft sleeves that are movably connected. The second electric cylinder is vertically arranged at the two ends of the upper pressing roller. The cylinder body end of the second electric cylinder is fixedly connected to the frame. The telescopic rod end of the second electric cylinder is fixedly connected to the upper fixed shaft sleeve.

[0010] Furthermore, the upper fixed shaft sleeve and the lower fixed shaft sleeve are provided with installation grooves that are arranged corresponding up and down. A spring is arranged between the upper fixed shaft sleeve and the lower fixed shaft sleeve. The upper and lower ends of the spring are respectively placed in the installation grooves. A pressure detector is arranged between the lower end of the spring and the installation groove.

[0011] Furthermore, the unwinding assembly includes a first unwinding roller and a second unwinding roller respectively connected to the frame, and the first unwinding roller is arranged below the second unwinding roller.

[0012] Furthermore, the coating and laminating assembly includes laminating rollers arranged in parallel up and down, and a spray gun arranged on the left side of the first unwinding roller and perpendicular to the feeding direction of the coiled material.

[0013] Furthermore, the drying component includes a second heating plate which is arranged in parallel up and down and connected to the frame on one side. The cooling component includes a cooling orifice plate, an air pipeline, and an air compressor which are arranged in parallel up and down. A surface of the cooling orifice plate close to the coil is provided with a plurality of evenly distributed air jet holes, and the air pipeline is respectively connected to the cooling orifice plate and the air compressor.

[0014] The beneficial effects of the utility model are:

[0015] The utility model enables the equipment to adapt to different composite processes of aluminum foil and paper through the mutual cooperation among the unwinding component, the coating and pressing component, the multi-stage pressing component, the drying component, the cooling component and the winding roller. The first pressing component, the second pressing component and the third pressing component are arranged on the structure, and the pre-pressing temperature, pressing pressure and pressing tension of the first pressing component, the second pressing component and the third pressing component can be set separately, so that the equipment can better adapt to different laminating processes, thereby increasing the bonding strength between the aluminum foil and the paper and improving the composite quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of a multi-stage pressing assembly of the utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the cooling hole plate of the utility model

[0019] Reference numerals: frame 1, unwinding assembly 2, first unwinding roller 21, second unwinding roller 22, multi-stage pressing assembly 3, first pressing assembly 30, second pressing assembly 31, third pressing assembly 32, tension adjusting assembly 33, tension detecting roller 331, tension adjusting roller 332, first electric cylinder 333, lifting chute 334, movable sleeve 335, first heating plate 34, pressing member 35, upper pressing roller 351, upper fixed bushing 352, second electric cylinder 353, lower pressing roller 354, lower fixed bushing 355, mounting groove 356, spring 357, pressure detector 358, coating and pressing assembly 7, spraying gun 71, pressing roller 72, drying assembly 4, second heating plate 41, cooling assembly 5, cooling hole plate 51, air conveying pipeline 52, air compressor 53, air spraying hole 54. Detailed implementation manners

[0020] The implementation manners of the present utility model will be described below in conjunction with the accompanying drawings and related embodiments. The implementation manners of the present utility model are not limited to the following embodiments, and the relevant necessary components involved in the present utility model should be regarded as well-known technologies in the technical field, which can be known and mastered by those skilled in the technical field.

[0021] As Figures 1 to 3 shown, the present utility model provides a technical solution: a composite device for laminating soft packaging materials, including a frame 1, an unwinding assembly 2, a coating and pressing assembly 7, a multi-stage pressing assembly 3, a drying assembly 4, a cooling assembly 5, and a winding roller 6, which are sequentially arranged along the material feeding direction and connected to the frame 1. The multi-stage pressing assembly 3 includes a first pressing assembly 30, a second pressing assembly 31, and a third pressing assembly 32. The first pressing assembly 30, the second pressing assembly 31, and the third pressing assembly 32 are arranged in parallel from top to bottom. The drying assembly 4 and the cooling assembly 5 are arranged below the third pressing assembly 32. The unwinding assembly 2 and the winding roller 6 are arranged in parallel, and the unwinding assembly 2 and the winding roller 6 are arranged on the left side of the multi-stage pressing assembly 3 and are movably connected to the frame 1.

[0022] The utility model realizes an integrated production process from unwinding, coating, pressing, drying to cooling and winding through the coordinated work of various components, greatly improving the production efficiency. The unwinding assembly 2 is used to place and release the aluminum foil and paper to be laminated. The unwinding assembly 2 can smoothly feed the materials into the subsequent processing procedures. The spraying gun 71 of the coating and pressing device is perpendicular to the feeding direction of the coil material and is used to spray glue on the surface of the paper or aluminum foil to prepare for the subsequent lamination process. The pressing roller 72 preliminarily presses the aluminum foil and paper coated with glue to make the two preliminarily adhere. Each section of the multi-section pressing assembly 3 includes a tension adjusting assembly 33, a first heating plate 34 and a pressing component 35. Through multi-section pressing, the bonding strength between the aluminum foil and the paper is gradually enhanced. The second heating plate 41 of the drying assembly 4 further heats and dries the pressed aluminum foil and paper to remove the moisture in the glue and make the bonding more firm. The cooling hole plate 51 of the cooling assembly 5 is provided with air spraying holes 54 on its surface and is communicated with an air compressor 53 through an air conveying pipe 52 to quickly cool the dried aluminum foil and paper, prevent the materials from deforming, and at the same time help to improve the structural strength of the product. The winding roller 6 winds the composite aluminum foil paper that has completed all processing procedures for subsequent packaging and use. A driving motor (not shown) is provided on the frame 1, and the driving motor can drive the first unwinding roller 21, the second unwinding roller 22, the tension detection roller 331, the pressing roller 72, the winding roller 6 and the lower pressing roller 354 to work.

[0023] Through the combination form of the first pressing assembly 30, the second pressing assembly 31 and the third pressing assembly 32, the utility model can increase the bonding strength between the aluminum foil and the paper. The multi-section pressing assembly 3 presses the aluminum foil and the paper multiple times, and heats and adjusts the tension during the pressing process, thereby enhancing the bonding strength between the aluminum foil and the paper and avoiding the delamination of the composite aluminum foil paper. At the same time, the first pressing assembly 30, the second pressing assembly 31 and the third pressing assembly 32 are all equipped with a tension adjusting assembly 33, a first heating plate 34 and a pressing component 35, which can flexibly adjust the process parameters according to the characteristics of different materials and the needs of the pressing stage to ensure stable pressing quality and improve the overall quality of the product.

[0024] As Figure 1 and Figure 2 shown, as a preferred embodiment of the utility model, the first pressing assembly 30, the second pressing assembly 31 and the third pressing assembly 32 have the same structure. The multi-section pressing assembly 3 includes a tension adjusting assembly 33, a first heating plate 34 and a pressing component 35. The first heating plate 34 is arranged parallel up and down. The tension adjusting assemblies 33 are symmetrically arranged on the left and right sides of the first heating plate 34. The pressing component 35 is arranged between the tension adjusting assemblies 33 and is placed on the discharging side of the first heating plate 34.

[0025] The first pressing component 30, the second pressing component 31, and the third pressing component 32 of the multi-stage pressing component 3 are arranged in parallel from top to bottom. Structurally, they all include a tension adjustment component 33, a first heating plate 34, and a pressing component 35. Through multi-stage pressing, the bonding strength between the aluminum foil and the paper is gradually enhanced. The tension adjustment component 33 is symmetrically arranged on the left and right sides of the first heating plate 34, which can ensure that during the processing, the tension of the aluminum foil and the paper can be evenly and precisely controlled during the heating and pressing stages. It can effectively prevent problems such as wrinkles, stretching, or tearing caused by uneven material tension. The first heating plate 34 is arranged parallel up and down. By heating simultaneously from above and below, it can ensure that the aluminum foil and the paper are evenly heated during the heating process. The pressing component 35 is arranged between the tension adjustment components 33 and is placed on the discharging side of the first heating plate 34, enabling the aluminum foil and the paper to be immediately pressed after being heated and softened or pretreated. It can reduce the transfer time between various links of the aluminum foil and the paper and avoid the possibility of offset between the aluminum foil and the paper due to transmission. At the same time, the pressing component 35 can apply a uniform pressing force to further improve the pressing quality of the aluminum foil paper.

[0026] As Figure 1 and Figure 2 shown, as a preferred embodiment of the present utility model, the tension adjustment component 33 includes a tension detection roller 331 and a tension adjustment roller 332 that are symmetrically arranged on both sides of the first heating plate 34 in sequence. The two ends of the tension adjustment roller 332 are provided with first electric cylinders 333 that are movably connected. The cylinder body end of the first electric cylinder 333 is fixedly connected to the frame 1. The two ends of the tension adjustment roller 332 are movably sleeved with movable sleeves 335. The telescopic rod end of the first electric cylinder 333 is fixedly connected to the movable sleeve 335. The two ends of the tension detection roller 331 are movably connected to the frame 1. The frame 1 is correspondingly provided with a lifting chute 334 at the position of the movable sleeve 335 that can cooperate with the movable sleeve 335 to slide up and down.

[0027] The two ends of the tension detection roller 331 are movably connected to the frame 1. When the aluminum foil and the paper pass through, the tension detection roller 331 can sense and measure the tension of the material. The two ends of the tension adjustment roller 332 are provided with first electric cylinders 333 that are movably connected. The movable sleeve 335 is movably sleeved at the two ends of the tension adjustment roller 332. The tension adjustment roller 332 can freely rotate within the movable sleeve 335. The movable sleeve 335 is fixedly connected to the telescopic rod end of the first electric cylinder 333. At the same time, the frame 1 is provided with a lifting chute 334 that cooperates with the movable sleeve 335 to slide up and down, providing guidance and support for the up and down movement of the tension adjustment roller 332. As the telescopic rod of the first electric cylinder 333 extends or contracts, the movable sleeve 335 slides up and down within the lifting chute 334, thereby driving the tension adjustment roller 332 to move up and down. The included angle or contact area of the material passing through the tension adjustment roller 332 is changed, thereby adjusting the tension of the material.

[0028] As Figure 1 and Figure 2 shown, as a preferred embodiment of the present utility model, the pressing component 35 includes an upper pressing roller 351, a lower pressing roller 354 and a second electric cylinder 353. The upper pressing roller 351 and the lower pressing roller 354 are arranged parallel to each other up and down. At both ends of the upper pressing roller 351, upper fixed shaft sleeves 352 are respectively arranged in a movable connection manner. At both ends of the lower pressing roller 354, lower fixed shaft sleeves 355 are respectively arranged in a movable connection manner. The second electric cylinder 353 is vertically arranged at both ends of the upper pressing roller 351. The cylinder body end of the second electric cylinder 353 is fixedly connected to the frame 1, and the telescopic rod end of the second electric cylinder 353 is fixedly connected to the upper fixed shaft sleeve 352. The upper fixed shaft sleeve 352 and the lower fixed shaft sleeve 355 are provided with mounting grooves 356 corresponding to each other up and down. A spring 357 is arranged between the upper fixed shaft sleeve 352 and the lower fixed shaft sleeve 355. The upper and lower ends of the spring 357 are respectively placed in the mounting grooves 356. A pressure detector 358 is arranged between the lower end of the spring 357 and the mounting groove 356.

[0029] The upper pressing roller 351 and the lower pressing roller 354 are arranged parallel to each other up and down. The upper pressing roller 351 can rotate freely within the upper fixed shaft sleeve 352, and the lower pressing roller 354 can rotate freely within the lower fixed shaft sleeve 355. The lower fixed shaft sleeve 355 is installed in the frame 1. When the aluminum foil and the paper enter the pressing area, both apply pressure to the material together to achieve the pressing of the material. The second electric cylinder 353 is vertically arranged at both ends of the upper pressing roller 351. The cylinder body end of the second electric cylinder 353 is fixedly connected to the frame 1, and the telescopic rod end is fixedly connected to the upper fixed shaft sleeve 352. When the second electric cylinder 353 is started, the telescopic rod extends downward, pushing the upper fixed shaft sleeve 352 and the upper pressing roller 351 to move downward until they are in close contact with the lower pressing roller 354 and apply sufficient pressure. A spring 357 is arranged between the upper fixed shaft sleeve 352 and the lower fixed shaft sleeve 355. The upper and lower ends of the spring 357 are respectively placed in the mounting grooves 356. The spring 357 plays a buffering role here, which can absorb the impact force and vibration generated during the pressing process, and at the same time helps to maintain the stability of the pressing force. A pressure detector 358 is arranged between the lower end of the spring 357 and the mounting groove 356, which is used to detect the pressure change during the pressing process. When the pressure reaches the preset value, the second electric cylinder 353 temporarily stops running to maintain a constant pressing force.

[0030] As Figure 1 and Figure 2 shown, as a preferred embodiment of the present utility model, the unwinding assembly 2 includes a first unwinding roller 21 and a second unwinding roller 22 respectively connected to the frame 1. The first unwinding roller 21 is arranged below the second unwinding roller 22. The coating and pressing assembly 7 includes a pressing roller 72 arranged parallel to each other up and down, and a spraying gun 71 arranged on the left side of the first unwinding roller 21 and perpendicular to the feeding direction of the coil material.

[0031] The first unwinding roller 21 and the second unwinding roller 22 of the unwinding assembly 2 are used to correspondingly place the aluminum foil and the paper. The winding roller 6 is located at the end of the processing flow and is responsible for winding the composite aluminum foil paper after a series of processing treatments. The spraying gun 71 in the coating and pressing assembly 7 is responsible for evenly spraying glue, adhesive or other bonding materials on the surface of the aluminum foil or the paper, and the pressing roller 72 is responsible for tightly pressing the aluminum foil and the paper together through the adhesive.

[0032] As Figure 1 and Figure 3 shown, as a preferred embodiment of the present utility model, the drying assembly 4 includes a second heating plate 41 which is arranged parallel up and down and one side surface of which is connected to the frame 1. The cooling assembly 5 includes a cooling hole plate 51, an air delivery pipeline 52, and an air compressor 53 which are arranged parallel up and down. A plurality of evenly distributed air spraying holes 54 are provided on the surface of the cooling hole plate 51 close to the coil material. The air delivery pipeline 52 is respectively communicated with the cooling hole plate 51 and the air compressor 53.

[0033] The drying assembly 4 and the cooling assembly 5 are respectively responsible for the drying and cooling processes of the materials in the equipment. The function of the drying assembly 4 is to remove moisture and solvents in the processing. The drying assembly 4 heats the composite aluminum foil paper through the second heating plate 41 arranged parallel up and down, so that the moisture, solvents or volatile components in the materials are quickly evaporated, and the adhesive between the aluminum foil and the paper can be quickly hardened, because the remaining moisture or solvents may affect the curing effect of the adhesive. The cooling assembly 5 quickly cools the dried composite aluminum foil paper through the cooling hole plate 51 arranged parallel up and down and the air delivery pipeline 52 communicated with the air compressor 53. A plurality of evenly distributed air spraying holes 54 are provided on the cooling hole plate 51, which can ensure that the cold air is evenly sprayed on the surface of the composite aluminum foil paper to achieve uniform cooling. The air compressor 53 in the cooling assembly 5 can adjust the pressure and flow rate of the output air flow according to needs, so as to control the cooling speed.

[0034] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A composite device for coating soft packaging materials, comprising a frame (1), characterized in that: The invention comprises an unwinding assembly (2), a coating and laminating assembly (7), a multi-stage laminating assembly (3), a drying assembly (4), a cooling assembly (5), and a winding roller (6) which are sequentially arranged along the material feeding direction and connected to a frame (1); the multi-stage laminating assembly (3) comprises a first laminating assembly (30), a second laminating assembly (31), and a third laminating assembly (32); the first laminating assembly (30), the second laminating assembly (31), and the third laminating assembly (32) are sequentially arranged in parallel from top to bottom; the drying assembly (4) and the cooling assembly (5) are arranged below the third laminating assembly (32); the unwinding assembly (2) and the winding roller (6) are arranged in parallel; the unwinding assembly (2) and the winding roller (6) are arranged on the left side of the multi-stage laminating assembly (3) and are movably connected to the frame (1).

2. The composite equipment for film coating of soft packaging materials according to claim 1, characterized in that: The first pressing assembly (30), the second pressing assembly (31) and the third pressing assembly (32) have the same structure. The multi-stage pressing assembly (3) comprises a tension adjustment assembly (33), a first heating plate (34) and a pressing component (35). The first heating plate (34) is arranged in parallel up and down. The tension adjustment assembly (33) is symmetrically arranged on the left and right sides of the first heating plate (34). The pressing component (35) is arranged between the tension adjustment assemblies (33) and is placed on the discharge side of the first heating plate (34).

3. The composite equipment for film coating of soft packaging materials according to claim 2, characterized in that: The tension adjustment assembly (33) comprises a tension detection roller (331) and a tension adjustment roller (332) which are symmetrically arranged on both sides of the first heating plate (34) in sequence; two ends of the tension adjustment roller (332) are provided with a first electric cylinder (333) which is movably connected; a cylinder end of the first electric cylinder (333) is fixedly connected to the frame (1); two ends of the tension adjustment roller (332) are movably sleeved with a movable sleeve (335); a telescopic rod end of the first electric cylinder (333) is fixedly connected to the movable sleeve (335); two ends of the tension detection roller (331) are movably connected to the frame (1); and a lifting slot (334) which can cooperate with the movable sleeve (335) to slide up and down is correspondingly arranged on the frame (1) at the position of the movable sleeve (335).

4. The composite equipment for film coating of soft packaging materials according to claim 2, characterized in that: The pressing component (35) comprises an upper pressing roller (351), a lower pressing roller (354) and a second electric cylinder (353); the upper pressing roller (351) and the lower pressing roller (354) are arranged in parallel up and down; the two ends of the upper pressing roller (351) are respectively provided with upper fixed shaft sleeves (352) that are movably connected; the two ends of the lower pressing roller (354) are respectively provided with lower fixed shaft sleeves (355) that are movably connected; the second electric cylinder (353) is vertically arranged at the two ends of the upper pressing roller (351); the cylinder end of the second electric cylinder (353) is fixedly connected to the frame (1); and the telescopic rod end of the second electric cylinder (353) is fixedly connected to the upper fixed shaft sleeve (352).

5. The composite equipment for film coating of soft packaging materials according to claim 4, characterized in that: The upper fixed shaft sleeve (352) and the lower fixed shaft sleeve (355) are provided with mounting grooves (356) correspondingly at the upper and lower parts thereof; a spring (357) is provided between the upper fixed shaft sleeve (352) and the lower fixed shaft sleeve (355); upper and lower ends of the spring (357) are respectively placed in the mounting grooves (356); and a pressure detector (358) is provided between the lower end of the spring (357) and the mounting groove (356).

6. The composite equipment for film coating of soft packaging materials according to claim 1, characterized in that: The unwinding assembly (2) comprises a first unwinding roller (21) and a second unwinding roller (22) respectively connected to the frame (1); the first unwinding roller (21) is arranged below the second unwinding roller (22).

7. The composite equipment for film coating of soft packaging materials according to claim 1, characterized in that: The coating and laminating assembly (7) comprises laminating rollers (72) arranged in parallel up and down, and a spray gun (71) arranged on the left side of the first unwinding roller (21) and perpendicular to the material feeding direction of the coil.

8. The composite equipment for film coating of soft packaging materials according to claim 1, characterized in that: The drying component (4) comprises a second heating plate (41) which is arranged in parallel with each other and one side of which is connected to the frame (1). The cooling component (5) comprises a cooling hole plate (51) which is arranged in parallel with each other, an air pipeline (52), and an air compressor (53). A surface of the cooling hole plate (51) close to the coil is provided with a plurality of evenly distributed air injection holes (54). The air pipeline (52) is respectively connected to the cooling hole plate (51) and the air compressor (53).

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