Aluminum-plastic film compounding equipment for lithium battery packaging and processing technology of aluminum-plastic film compounding equipment

Abstract

The invention discloses aluminum-plastic film compounding equipment for lithium battery packaging. The aluminum-plastic film compounding equipment comprises a bracket, the heating roller is horizontally and rotatably arranged on the support, and a plurality of inserting holes used for inserting heating rods are formed in the heating roller in the axial direction; the supporting beam is arranged above the heating roller; the multiple pressure wheels are tightly arranged in the extending direction of the supporting beam, and all the pressure wheels are rotationally arranged on the supporting beam and can float up and down in the vertical direction; one adjusting mechanism is arranged on each pressure wheel and is used for adjusting the weight of the pressure wheel; and the flattening mechanism is arranged on the bracket and is used for flattening the aluminum plastic film. The complete pressing roller is divided into a plurality of pressure wheels capable of floating up and down, and due to the fact that the width of a single pressure wheel is small, all the pressure wheels can stably make contact with the aluminum-plastic film through up-down position adjustment under the condition that abrasion is uneven, and therefore the hot pressing effect on the aluminum-plastic film is guaranteed, and the compounding effect of compounding equipment on the aluminum-plastic film is improved. The invention further discloses a processing technology of the aluminum plastic film.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum-plastic film processing, and in particular relates to an aluminum-plastic film composite device for lithium battery packaging and a processing technology thereof. Background Art

[0002] Aluminum-plastic film is a composite material used for lithium battery packaging. It has the characteristics of high barrier properties, good cold stamping formability, puncture resistance, electrolyte stability and insulation. These properties make the aluminum-plastic film perform well in protecting internal electrodes and isolating the external environment.

[0003] Aluminum-plastic film is composed of multiple layers of materials, and a laminating machine is needed to laminate the multiple layers of materials. The laminating rollers of existing laminating machines have insufficient processing precision and uneven roller surfaces, which causes different forces on different parts of the aluminum-plastic film during lamination. Moreover, after long-term use, the laminating rollers wear unevenly, and the surface may be uneven or partially deformed, resulting in uneven pressure distribution. This leads to appearance defects such as uneven bonding strength, bubbles and wrinkles, and unstable barrier mechanical properties, resulting in reduced production efficiency and material waste.

[0004] Therefore, it is necessary to improve the composite equipment in the prior art. Summary of the invention

[0005] One of the purposes of the present invention is to overcome the defects in the prior art and provide an aluminum-plastic film composite device for lithium battery packaging, thereby improving the pressing effect of the composite device on the aluminum-plastic film.

[0006] To achieve the above purpose, the specific technical scheme of the aluminum-plastic film composite equipment for lithium battery packaging of the present invention is as follows: include: Bracket; A heating roller is horizontally rotatably arranged on the bracket, and the heating roller is provided with a plurality of plugging holes for plugging in heating rods along the axial direction, and the plugging holes are evenly spaced around the axis of the heating roller, and are used for heating the aluminum-plastic film; A support beam is disposed above the heating roller and is distributed parallel to the axial direction of the heating roller; A plurality of pressure wheels are closely arranged along the extension direction of the support beam, each of the pressure wheels is rotatably arranged on the support beam and can float up and down vertically; An adjustment mechanism, one of which is provided on each of the pressure wheels and is used to adjust the weight of the pressure wheel; A flattening mechanism is arranged on the support and is used for flattening the aluminum-plastic film.

[0007] Preferably, the pressure wheel includes a wheel seat and a wheel rim mounted on the wheel seat, the wheel rim is rotatably arranged around its own axis, the wheel seat is provided with a waist-shaped groove, the support beam passes through the waist-shaped groove, the wheel seat is slidably matched with the support beam along the length direction of the waist-shaped groove, and both sides of the wheel seat are interconnected with the support beam through elastic support members.

[0008] Preferably, the elastic support member includes a fixed sleeve sleeved on the outer periphery of the support beam, the fixed sleeve is provided with a locking member, the wheel seat is fixedly connected with a guide column distributed along the length direction of the waist-shaped groove, the guide column is slidably matched with a guide sleeve fixedly connected to the fixed sleeve, the guide column sleeve is provided with a spring, the two ends of the spring are respectively connected to the top of the guide column and the guide sleeve, and the spring is in a compressed state.

[0009] Preferably, the adjustment mechanism includes a load-bearing cavity opened inside the wheel seat, the bottom of the load-bearing cavity is connected to a flexible pipe, a power pump is provided on the pipe, a storage cavity for filling oil is opened inside the heating roller, and the pipe is connected to the inside of the storage cavity.

[0010] Preferably, the support beam is a hollow tubular structure, and a plurality of pipe penetration holes for penetrating pipes are arranged at the bottom of the support beam along its extension direction.

[0011] Preferably, two support beams are provided, and a plurality of pressure wheels are arranged on each of the two support beams. The pressure wheels on the two support beams are staggered, and two adjacent pressure wheels fit tightly together.

[0012] Preferably, the end faces of the rims of the two adjacent pressure wheels are fitted to each other and slidably connected, and an elastic jacket is sleeved on the outer circumference of the pressure wheel, and the width of the elastic jacket is less than or equal to the width of the rims.

[0013] Preferably, the leveling mechanism comprises two leveling rollers arranged parallel to the heating roller, a gap is provided between the two leveling rollers for the aluminum-plastic film to pass through, brush strips are provided on the leveling rollers, and both leveling rollers are provided with dust removal components.

[0014] Preferably, the smoothing roller is a hollow structure, the dust removal assembly includes a plurality of exhaust holes evenly distributed on the outer circumference of the smoothing roller, the end of the smoothing roller has a tubular support shaft, and the support shaft is connected to a vacuum pump via a rotary joint.

[0015] The second object of the present invention is to provide a processing technology for an aluminum-plastic film, comprising the following steps: Step 1, after unwinding the aluminum foil, clean the surface, apply glue on both sides and dry it to passivate the surface of the aluminum foil; Step 2, apply glue to the front side of the passivated aluminum foil, attach a PP film to the front side, and press it through a composite device; Step 3, hot-melting the PET particles and extruding them into a film, and attaching them to the back of the aluminum foil, and then laminating them through a composite device to obtain an aluminum-plastic film product; Step 4, inspect the finished aluminum-plastic film and cut off the uneven edges; Step 5: Cut the aluminum-plastic film after inspection, then pack it and wait for shipment.

[0016] The aluminum-plastic film composite equipment for lithium battery packaging and the processing technology thereof have the following advantages: by dividing the complete pressing roller into a plurality of pressure wheels that can float up and down, and because the width of a single pressure wheel is small, each pressure wheel can be adjusted up and down in the case of uneven wear to stably contact the aluminum-plastic film, thereby ensuring the hot pressing effect on the aluminum-plastic film and improving the composite effect of the composite equipment on the aluminum-plastic film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the composite device of the present invention from a first viewing angle; Figure 2 A schematic structural diagram of the composite device of the present invention from a second viewing angle; Figure 3 is a cross-sectional view of a composite device of the present invention; Figure 4 It is a structural schematic diagram of the heating roller of the present invention; Figure 5 It is a structural schematic diagram of the leveling roller of the present invention; Figure 6 It is a schematic diagram of the connection structure between the pressure wheel and the support beam of the present invention; Figure 7 It is a schematic diagram of the installation structure of the elastic support member of the present invention; Figure 8 It is a structural schematic diagram of the pressure wheel of the present invention; Fig. 9 is a cross-sectional view of a pressure wheel of the present invention; Fig.10 It is a structural schematic diagram of the fixing sleeve of the present invention; Explanation of the marks in the figure: 1. bracket; 2. leveling roller; 3. guide roller; 4. pressure wheel; 5. support beam; 6. heating roller; 7. dust removal assembly; 8. heating rod; 201. brush strip; 202. exhaust hole; 401. elastic jacket; 402. wheel rim; 403. bearing; 404. wheel seat; 405. power pump; 406. pipeline; 407. waist-shaped groove; 408. guide column; 409. spring; 410. fixing sleeve; 411. load-bearing cavity; 412. fastening screw; 413. guide sleeve; 501. pipe hole; 601. storage cavity; 602. plug-in hole; 701. rotary joint; 702. vacuum pump. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] The terms “top surface”, “bottom surface” and “underside” are used with reference to the normal use state of the composite device only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0020] like Figure 1-4 As shown, a flexible film composite device for lithium battery packaging is characterized in that it includes a bracket 1; a heating roller 6, which is horizontally rotatably arranged on the bracket 1, and the heating roller 6 is provided with a plurality of plug holes 602 for plugging in the heating rod 8 along the axial direction, and each plug hole 602 is evenly spaced around the axis of the heating roller 6 and is used to heat the aluminum-plastic film; a support beam 5, which is arranged above the heating roller 6 and is parallel to the axial distribution of the heating roller 6; a plurality of pressure wheels 4 are closely arranged along the extension direction of the support beam 5, and each pressure wheel 4 is rotatably arranged on the support beam 5 and can float up and down in the vertical direction; an adjusting mechanism, one of which is arranged on each pressure wheel 4, and is used to adjust the weight of the pressure wheel 4; a flattening mechanism is arranged on the bracket 1 and is used to flatten the aluminum-plastic film.

[0021] The above-mentioned composite equipment is suitable for, but not limited to, hot pressing operations between layers during the production of aluminum-plastic film. When in use, the aluminum-plastic film first passes through a flattening mechanism, which flattens the aluminum-plastic film and removes dust on the surface and bubbles between the film layers; a guide roller 3 is provided on the bracket 1, and under the guiding effect of the guide roller 3, the aluminum-plastic film surrounds the surface of the heating roller 6 for at least half a circle, and at the same time, pressure is applied to the aluminum-plastic film through a plurality of pressure wheels 4 located above the heating roller 6; a motor for driving the heating roller 6 to rotate is provided on the bracket 1, and a plug hole 602 for installing a heating rod 8 is provided on the end face of the heating roller 6, which can facilitate the disassembly, assembly and maintenance of the heating rod 8, and the evenly distributed heating rods can enable the heating roller 6 to press the aluminum-plastic film. The pressure wheels 4 are tightly connected to each other to reduce the gap between the pressure wheels 4, so that the pressure wheels 4 have a better hot pressing effect on the aluminum-plastic film; the setting of the adjustment mechanism is used to adjust the weight of the pressure wheel 4, thereby adjusting the pressure of the pressure wheel 4 on the aluminum-plastic film, so that it can provide different pressure requirements, thereby improving the practicality of the composite equipment; by dividing the pressure roller in the prior art into a plurality of pressure wheels 4 with smaller widths, when one or more of the pressure wheels 4 are worn to different degrees, the pressure wheel 4 can be adjusted up and down independently to make the worn pressure wheel 4 still fit closely with the aluminum-plastic film, thereby maintaining the hot pressing effect on the aluminum-plastic film, thereby improving the quality of the aluminum-plastic film produced by the composite equipment.

[0022] Compared with the prior art that uses the entire pressure roller to hot-press the aluminum-plastic film; the composite equipment uses multiple independently adjustable pressure wheels 4 and reduces the influence of its surface wear on the pressure provided by the pressure wheel 4 by narrowing the width of the pressure wheel 4, so as to provide stable and reliable pressure to the aluminum-plastic film and improve the composite effect of the aluminum-plastic film; and the pressure of each pressure wheel 4 can be adjusted independently to provide different pressure requirements; and according to the aluminum-plastic film of different widths, some of the pressure wheels 4 can be selected to apply pressure to the aluminum-plastic film, thereby reducing the wear of the equipment and reducing the load of the equipment.

[0023] A further improvement is, Figure 6-9 As shown, the pressure wheel 4 includes a wheel seat 404 and a wheel rim 402 mounted on the wheel seat 404. The wheel rim 402 is rotatably arranged around its own axis. The wheel seat 404 is provided with a waist-shaped groove 407. The support beam 5 passes through the waist-shaped groove 407. The wheel seat 404 is slidably matched with the support beam 5 shown along the length direction of the waist-shaped groove. Both sides of the wheel seat 404 are interconnected with the support beam 5 through elastic support members.

[0024] The wheel seat 404 and the wheel rim 402 of the above-mentioned pressure wheel 4 are connected by a bearing 403, so that the wheel rim 402 can rotate; the setting of the waist-shaped groove 407 enables it to slide up and down on the support beam 5, thereby realizing the up and down position adjustment of the pressure wheel 4; the support beam 5 is a flat structure, and its two sides are in contact with the inner walls of the two sides of the waist-shaped groove 407 to achieve the guiding and supporting effect on the wheel seat 4. The setting of the elastic support member applies an upward elastic force to the pressure wheel 4. When the adjusting mechanism adjusts the gravity of the pressure wheel 4, the pressure wheel 4 can be controlled to move up and down through the elastic support member, thereby adjusting the pressure of the pressure wheel 4 on the aluminum-plastic film; when the pressure wheel 4 is not needed, the gravity of the pressure wheel 4 can be reduced by the adjusting mechanism, so that the pressure wheel 4 is completely separated from the heating roller 6, so that the pressure wheel 4 is put away and stopped from being used, which can reduce the wear of the pressure wheel, thereby reducing the operating cost of the equipment.

[0025] A further improvement is, Figure 6-10 As shown, the elastic support member includes a fixed sleeve 410 sleeved on the outer periphery of the support beam 5, a locking member is arranged on the fixed sleeve 410, the wheel seat 404 is fixedly connected with a guide column 408 distributed along the length direction of the waist-shaped groove, the guide column 408 is slidably matched with a guide sleeve 413 fixedly connected with the fixed sleeve 410, the guide column 408 is sleeved with a spring 409, the two ends of the spring 409 are respectively connected to the top of the guide column 408 and the guide sleeve 413, and the spring 409 is in a compressed state. In the above-mentioned composite device, the locking part is a fastening screw 412, and the fixing and separation between the fixing sleeve 410 and the support beam 5 can be achieved by loosening the fastening screw 412, so that the disassembly and assembly between the pressure wheel 4 and the support beam 5 can be convenient; after the fixing sleeve 410 is fixed to the support beam 5, the guide sleeve 413 thereon cooperates with the guide column 408 on the wheel seat 404 to achieve the support and guiding effect on the wheel seat 404, thereby controlling the moving direction of the pressure wheel 4 and supporting the pressure wheel 4; the spring 409 exerts an upward thrust on the wheel seat 404, so that when the adjustment mechanism controls the weight of the pressure wheel 4, the lifting and lowering adjustment of the pressure wheel 4 can be achieved through the spring 409.

[0026] A further improvement is, Figure 6 and 9As shown, the adjustment mechanism includes a load-bearing cavity 411 opened inside the wheel seat 404, the bottom of the load-bearing cavity 411 is connected to a flexible pipe 406, a power pump 405 is arranged on the pipe 406, a storage cavity 601 for injecting oil is opened inside the heating roller 6, and the pipe 406 is connected to the inside of the storage cavity 601; the support beam 5 is a hollow tubular structure, and the bottom of the support beam 5 is arranged along its own extension direction with a plurality of through holes 501 for passing the pipe 406. One end of the pipe 406 is connected to the bottom of the load-bearing chamber 411, and the other end passes through the inside of the support beam 5 and is inserted into the storage chamber 601 along the axial direction of the heating roller 6. Oil is placed in the storage chamber 601. The power pump 405 can realize the back and forth transportation of oil between the load-bearing chamber 411 and the storage chamber 601. When the oil enters the load-bearing chamber 411, the overall weight of the pressure wheel 4 increases, thereby increasing the pressure of the pressure wheel 4 on the aluminum-plastic film. When the oil is extracted from the load-bearing chamber 411, the overall weight of the pressure wheel 4 decreases, thereby reducing the pressure of the pressure wheel 4 on the aluminum-plastic film. When all the oil in the load-bearing chamber 411 is extracted, the overall weight of the pressure wheel is less than the elastic force generated by the spring 409, so that the pressure wheel 4 rises upward under the action of the elastic force and separates from the heating roller 6.

[0027] The above-mentioned composite equipment stores the oil inside the heating roller 6, so that the equipment does not need to set up additional oil storage equipment, which can reduce the cost of the equipment, and the oil inside the heating roller 6 can store the heat generated by the heating rod 8, which has a certain insulation effect. With the transportation of the oil, the heat can also be transferred to the pressure wheel 4. The pressure wheel 4 also has a certain temperature, so that during the hot pressing process of the aluminum-plastic film, the temperature difference on both sides is reduced, and the hot pressing effect on the aluminum-plastic film is improved. In addition, the weight of the pressure wheel 4 can be controlled by the injection amount of oil to improve the control accuracy, thereby improving the accuracy of controlling the pressure size generated by the pressure wheel 4 on the aluminum-plastic film.

[0028] A further improvement is, Figure 6-9 As shown, two support beams 5 are provided, and a plurality of pressure wheels 4 are arranged on both support beams 5. The pressure wheels 4 on the two support beams 5 are arranged in a staggered manner, and two adjacent pressure wheels 4 are closely fitted. Since there is a certain gap between the pressure wheels 4, the gap cannot provide pressure to the aluminum-plastic film. In the above composite equipment, two support beams 5 are provided, and a plurality of staggered pressure wheels 4 are provided on both support beams 5, so that the pressure wheels 4 on the two support beams 5 can fill the position of the gap between the two pressure wheels 4, so that the entire aluminum-plastic film can be stably hot-pressed everywhere, ensuring the hot-pressing effect on the aluminum-plastic film.

[0029] A further improvement is, Figure 6-8As shown, the end faces of the rims 402 of two adjacent pressure wheels 4 are fitted and slidably connected to each other, and an elastic jacket 401 is sleeved on the outer periphery of the pressure wheel 4, and the width of the elastic jacket 401 is less than or equal to the width of the rim 402. A polytetrafluoroethylene layer is provided on the end face of the rim 402, thereby reducing the friction between the two adjacent rims 402, so that the pressure wheel 4 can overcome the friction to adjust the lifting and lowering, and reduce the resistance when the rim 402 rotates, and reduce the wear between adjacent rims 402; the elastic jacket 401 can be made of rubber, and the elastic jacket 401 is deformed after being squeezed, which can increase the contact area between the rim 402 and the aluminum-plastic film and improve the hot pressing effect; and the elastic jacket 401 can reduce wear and tear, and is easy to replace, thereby improving the convenience of equipment use.

[0030] A further improvement is, Figure 1 , 2 As shown in Figures 3 and 5, the smoothing mechanism includes two smoothing rollers 2 arranged parallel to the heating roller 6, with a gap between the two smoothing rollers 2 for the aluminum-plastic film to pass through, brush strips 201 are arranged on the smoothing rollers 2, and both smoothing rollers 2 are provided with dust removal components 7; the smoothing roller 2 is a hollow structure, the dust removal component 7 includes a plurality of exhaust holes 202 uniformly distributed on the outer peripheral surface of the smoothing roller 2, the end of the smoothing roller 2 has a tubular support shaft, and the support shaft is connected to a vacuum pump 702 through a rotary joint 701. In the above-mentioned composite equipment, the ends of the two smoothing rollers 2 are provided with gears meshing with each other, and one end of one of the smoothing rollers 2 is also connected to a motor, which drives the two smoothing rollers 2 to rotate in opposite directions. When the aluminum-plastic film passes between the two smoothing rollers 2, the brush strips 201 on the smoothing roller 2 brush the surface of the aluminum-plastic film in the opposite direction of the moving direction of the aluminum-plastic film, so that the film layer of the aluminum-plastic film is flattened by the brush strips 201, and dust or impurities on the surface of the aluminum-plastic film are removed at the same time, so as to clean and flatten the aluminum-plastic film; the brush strips 201 are V-shaped structures distributed on the smoothing roller 2, and when the brush strips 201 come into contact with the aluminum-plastic film, the V-shaped structure first The tip of the brush contacts the aluminum-plastic film, and then the bristle strips 201 at both ends gradually contact the aluminum-plastic film, thereby achieving the effect of squeezing the bubbles between the aluminum-plastic film layers to both sides, thereby improving the effect of removing the bubbles between the aluminum-plastic film layers; at the same time, the dust and impurities on the surface of the aluminum-plastic film can also be removed by the bristle strips 201, and the air inside the leveling roller 2 is extracted by the vacuum pump 701 to generate negative pressure inside the leveling roller 2, so that the dust and impurities brushed off are sucked into the interior of the leveling roller 2 through the exhaust holes 202, thereby achieving the cleaning effect of the bristle strips 201, thereby improving the cleaning effect of the aluminum-plastic film, and a filter element for absorbing dust can also be arranged inside the leveling roller 2.

[0031] By setting the above-mentioned smoothing roller 2, impurities and dust on the surface of the aluminum-plastic film can be reduced, and the aluminum-plastic film can be kept smooth, thereby reducing the probability of impurities subsequently reaching the surface of the pressure wheel 4, keeping the pressure wheel 4 clean, thereby slowing down the wear speed of the pressure wheel 4, extending its service life, and improving the hot pressing effect of the pressure wheel 4 on the aluminum-plastic film; the flattened aluminum-plastic film can also better contact with the pressure wheel 4, further improving the hot pressing effect of the equipment on the aluminum-plastic film.

[0032] A processing technology for aluminum-plastic film comprises the following steps: Step 1, after unwinding the aluminum foil, clean the surface, apply glue on both sides and dry it to passivate the surface of the aluminum foil; Step 2, apply glue to the front side of the passivated aluminum foil, attach a PP film to the front side, and press it through a composite device; Step 3, hot-melting the PET particles and extruding them into a film, and attaching them to the back of the aluminum foil, and then laminating them through a composite device to obtain an aluminum-plastic film product; Step 4, inspect the finished aluminum-plastic film and cut off the uneven edges; Step 5: Cut the aluminum-plastic film after inspection, then pack it and wait for shipment.

[0033] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An aluminum-plastic film composite equipment for lithium battery packaging, characterized in that: include: Bracket (1); A heating roller (6) is horizontally rotatably arranged on the bracket (1), the heating roller (6) is provided with a plurality of plug holes (602) for plugging in the heating rod (8) along the axial direction, the plug holes (602) being evenly spaced around the axis of the heating roller (6) and being used for heating the aluminum-plastic film; A support beam (5) is arranged above the heating roller (6) and is distributed parallel to the axial direction of the heating roller (6); A plurality of pressure wheels (4) are closely arranged along the extension direction of the support beam (5), and each of the pressure wheels (4) is rotatably arranged on the support beam (5) and can float up and down in the vertical direction; an adjusting mechanism, one being provided on each of the pressure wheels (4) and being used for adjusting the weight of the pressure wheel (4); A flattening mechanism is arranged on the support (1) and is used to flatten the aluminum-plastic film.

2. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 1, characterized in that: The pressure wheel (4) comprises a wheel seat (404) and a wheel rim (402) sleeved on the wheel seat (404); the wheel rim (402) is rotatably arranged around its own axis; the wheel seat (404) is provided with a waist-shaped groove (407); the support beam (5) penetrates the waist-shaped groove (407); the wheel seat (404) is slidably matched with the support beam (5) along the length direction of the waist-shaped groove; both sides of the wheel seat (404) are connected to the support beam (5) via elastic support members.

3. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 2, characterized in that: The elastic support member comprises a fixing sleeve (410) sleeved on the outer periphery of the support beam (5), the fixing sleeve (410) being provided with a locking member, the wheel seat (404) being fixedly connected with a guide column (408) distributed along the length direction of the waist-shaped groove, the guide column (408) being slidably matched with a guide sleeve (413) fixedly connected to the fixing sleeve (410), the guide column (408) being sleeved with a spring (409), the two ends of the spring (409) being respectively connected to the top end of the guide column (408) and the guide sleeve (413), and the spring (409) being in a compressed state.

4. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 1, characterized in that: The adjustment mechanism comprises a load-bearing chamber (411) opened inside the wheel seat (404); the bottom of the load-bearing chamber (411) is connected to a flexible pipe (406); a power pump (405) is arranged on the pipe (406); a storage chamber (601) for injecting oil is opened inside the heating roller (6); the pipe (406) is connected to the inside of the storage chamber (601).

5. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 4, characterized in that: The support beam (5) is a hollow tubular structure, and a plurality of pipe penetration holes (501) for penetrating pipes (406) are arranged at the bottom of the support beam (5) along its own extension direction.

6. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 1, characterized in that: Two support beams (5) are provided, and a plurality of pressure wheels (4) are arranged in an array on each of the two support beams (5). The pressure wheels (4) on the two support beams (5) are arranged in a staggered manner, and two adjacent pressure wheels (4) are tightly fitted together.

7. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 2, characterized in that: The end faces of the wheel rims (402) of the two adjacent pressure wheels (4) are fitted to each other and slidably connected, and an elastic jacket (401) is sleeved on the outer circumference of the pressure wheel (4), and the width of the elastic jacket (401) is less than or equal to the width of the wheel rim (402).

8. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 1, characterized in that: The smoothing mechanism comprises two smoothing rollers (2) arranged parallel to the heating roller (6), a gap being provided between the two smoothing rollers (2) for the aluminum-plastic film to pass through, brush strips (201) being provided on the smoothing rollers (2), and dust removal components (7) being provided on both the smoothing rollers (2).

9. The aluminum-plastic film composite equipment for lithium battery packaging according to claim 8, characterized in that: The leveling roller (2) is a hollow structure, the dust removal assembly (7) comprises a plurality of air extraction holes (202) evenly distributed on the outer peripheral surface of the leveling roller (2), the end of the leveling roller (2) has a tubular support shaft, and the support shaft is connected to a vacuum pump (702) via a rotary joint (701).

10. A process for processing aluminum-plastic film comprising the composite device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, after unwinding the aluminum foil, clean the surface, apply glue on both sides and dry it to passivate the surface of the aluminum foil; Step 2, apply glue to the front side of the passivated aluminum foil, attach a PP film to the front side, and press it through a composite device; Step 3, hot-melting the PET particles and extruding them into a film, and attaching them to the back of the aluminum foil, and then laminating them through a composite device to obtain an aluminum-plastic film product; Step 4, inspect the finished aluminum-plastic film and cut off the uneven edges; Step 5: Cut the aluminum-plastic film after inspection, then pack it and wait for shipment.

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