A calender for composite packaging film and a processing method thereof

Abstract

This invention discloses a calender for composite packaging film and its processing method, relating to the field of composite packaging film processing technology. It includes a calendering assembly, a traction assembly on one side of the calendering assembly, and an adjustment assembly above the calendering assembly for adjusting the spacing between the calendering rollers. A feeding plate for placing materials is fixedly connected to the other side of the calendering assembly. In this calender for composite packaging film and its processing method, when waste material is wound upwards above the guide rollers, a warm air blower is activated. The hot air generated by the warm air blower is continuously delivered to the air supply box through a pipe. The rotation of the impeller further drives the linkage shaft to rotate, thereby causing the fixed disc fixedly connected to the lower end of the linkage shaft to rotate synchronously. Simultaneously, the swing plate remains connected to the air supply box through a first guide pipe. The hot air in the air supply box is continuously delivered through the first guide pipe to the nozzles on the lower surface of the swing plate, softening the waste material.

Description

Technical Field

[0001] This invention relates to the field of composite packaging film processing technology, specifically to a calendering machine for composite packaging films and its processing method. Background Technology

[0002] Composite packaging film is a packaging material made of multiple layers of different materials through a specific process. It combines the excellent properties of each layer of material, such as barrier properties, mechanical strength, and heat-sealing properties. It has a wide range of applications in the food, pharmaceutical, and daily chemical industries. The calendering process is one of the key steps in the production of composite packaging film. It uses calendering rollers to roll the material to achieve the specified thickness and uniformity, while improving the physical properties of the material.

[0003] Existing technology 1 (Chinese patent with announcement number CN219311820U and announcement date of 2023-07-07) discloses a graphene film calendering device. The graphene film calendering device includes a calendering machine body and a calendering carrier plate mounted on the calendering machine body. At least a portion of the surface of the calendering carrier plate is provided with an exhaust structure. The exhaust structure is a protrusion formed on the surface of the calendering carrier plate, and an exhaust channel of the calendering carrier plate is formed between adjacent protrusions; or the exhaust structure is a groove formed on the surface of the calendering carrier plate, and the groove is an exhaust channel of the calendering carrier plate. By setting an exhaust structure on the calendering carrier plate carrying the graphene film, even if the graphene film is bonded to the calendering carrier plate during the calendering process, the air bubbles between the laminated graphene films can be discharged through the exhaust channels formed by the exhaust structure, which greatly improves the degassing problem of the graphene film during the calendering process and improves the preparation yield of the graphene film.

[0004] There is also a prior art (Chinese patent with announcement number CN223266103U, announcement date 2025-08-26) of a PTFE film calendering production equipment, including a calendering table, a calendering frame fixedly connected to the top of the calendering table, two connecting threaded sleeves rotatably connected to the inner side of the calendering frame, a transmission component fixedly connected to the outer side of the connecting threaded sleeves, a connecting threaded rod threadedly connected to the inner side of the connecting threaded sleeves, a connecting frame fixedly connected to the bottom end of the connecting threaded rod, an auxiliary calendering roller rotatably connected to the inner side of the connecting frame, a limit component fixedly connected to the outer side of the connecting frame, and a main calendering component fixedly connected to the outer side of the calendering frame. It has the advantages of being able to know the distance between the calendering rollers and facilitating the calendering of PTFE films of different thicknesses.

[0005] Existing calenders for composite packaging films still have some shortcomings in practical applications. During the calendering process, irregular waste often occurs at the edges of the composite packaging film. If this waste is not handled in time, it can easily accumulate on the equipment, affecting its normal operation and potentially even adversely affecting product quality.

[0006] Therefore, we propose a calender for composite packaging films and its processing method to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a calender for composite packaging film and its processing method, in order to solve the problem mentioned in the background art that irregular waste often occurs at the edges of composite packaging film during the calendering process. If this waste is not dealt with in time, it is easy to accumulate on the equipment, affecting the normal operation of the equipment and even potentially causing adverse effects on product quality.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a calender for composite packaging film and its processing method, comprising a calendering assembly, a traction assembly provided on the side of the calendering assembly, and an adjustment assembly for adjusting the spacing between the calendering rollers provided above the calendering assembly, and a feeding plate for placing materials fixedly connected to the other side of the calendering assembly, a guide roller for guiding the waste material on the side of the calendering assembly provided on the upper side of the calendering assembly, and a softening mechanism provided above the guide roller and in front of the calendering assembly, the softening mechanism supplying air to soften the waste material by reciprocating the swing plate contained therein, and a pushing mechanism provided between the feeding plates, the pushing mechanism simultaneously pushing the material in place through the operation of the softening mechanism, ensuring the continuity and stability of the material calendering.

[0009] Preferably, a positioning plate is fixedly connected to the side of the calendering assembly, and a cutting blade is fixedly connected to both sides of the positioning plate. The cutting blade is positioned with its blade facing the calendering roll, and the cut waste is wrapped around the guide roll.

[0010] Preferably, the softening mechanism includes a warm air blower fixedly installed on the calendering assembly, an air supply box fixedly connected to the calendering assembly, and the air outlet of the warm air blower is connected through the air supply box. An impeller is rotatably connected inside the air supply box, and the central axis of the impeller extends to the lower surface of the air supply box.

[0011] Preferably, the side of the calendering assembly is rotatably connected to a linkage shaft, and the lower end of the linkage shaft is fixedly connected to a fixed disk. A belt linkage assembly is provided between the linkage shaft and the central shaft of the wind turbine, and the linkage shaft drives the fixed disk to rotate through the belt linkage assembly.

[0012] Preferably, the swing plate is rotatably connected to the upper side of the calendering assembly, and a limit frame is fixedly connected to the upper side of the calendering assembly. The limit frame is arranged in an arc shape, and the side of the swing plate is slidably connected to the inside of the limit frame. An adjustment plate is hinged to the lower surface of the limit frame, and the other end of the adjustment plate is hinged to the side of the swing plate.

[0013] Preferably, a nozzle is fixedly connected to the lower surface of the swing plate, and a first guide tube is connected through the side of the nozzle, and the other end of the first guide tube is connected through the side of the air supply box.

[0014] Preferably, a drive disk is slidably connected to the outer side of the linkage shaft, and the drive disk is located above the drive disk. A second magnetic block is fixedly connected to the lower surface of the drive disk, and a first magnetic block is fixedly connected to the upper surface of the fixed disk. The first magnetic block and the second magnetic block are arranged in a ring array, and the first magnetic block and the second magnetic block have the same magnetism.

[0015] Preferably, an abutment plate is fixedly connected to the outer end of the drive plate, and the lower end of the abutment plate is arranged in an arc shape. A limit rod is fixedly connected to the side of the feeding plate, and a pusher plate is slidably connected between the two sets of limit rods. An abutment frame is fixedly connected to the rear side of the pusher plate, and the upper side of the abutment frame is arranged in an inclined shape. The lower end of the abutment plate contacts the inclined side of the abutment frame. A return spring is fixedly connected between the pusher plate and the end of the limit rod. A second guide tube is connected through the upper part of the pusher plate and the air supply box.

[0016] A calender for composite packaging film and its processing method, comprising the following steps:

[0017] S1. Place the material to be processed on the feeding plate, start the calendering assembly, and the calendering rollers inside the calendering assembly begin to rotate. At the same time, adjust the spacing between the upper and lower calendering rollers precisely according to the thickness requirements of the material by adjusting the assembly to ensure that the calendering effect meets the process standards. After calendering, the composite packaging film passes through the positioning plate with the assistance of the traction assembly. The cutting blades set on the side inside the positioning plate cut the side of the composite packaging film, thereby separating the irregular waste material on the side. The waste material generated by cutting is then wound upwards above the guide roller, waiting for subsequent processing.

[0018] S2. While the calendering operation is underway, the warm air blower is started. The hot air generated by the blower is delivered to the air supply box through pipes. As the airflow moves inside the air supply box, it drives the impeller to rotate, which in turn causes the fixed plate to rotate. The swing plate is connected to the air supply box through the first guide pipe. The hot air in the air supply box is then continuously delivered to the nozzles on the lower surface of the swing plate through the first guide pipe. As the swing plate swings back and forth, the hot air is evenly blown onto the surface of the waste material wrapped above the guide roller.

[0019] S3. During the rotation of the fixed plate, the drive plate moves up and down reciprocally. The lower end of the outer contact plate contacts the inclined edge of the contact frame and slides relative to it. Under the push of the contact plate, the contact frame drives the pusher plate to slide along the limit rod towards the calendering assembly, thereby realizing the reciprocating pushing action of the pusher plate on the feeding plate, continuously and stably pushing the material to be processed on the feeding plate between the calendering rollers of the calendering assembly, ensuring the continuity of material supply.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) A positioning plate is provided. The cutting blade inside the positioning plate can accurately cut the side of the composite packaging film after calendering, effectively separating the irregular waste material on the side, ensuring the neatness of the edge of the composite packaging film, and improving the appearance quality of the product. At the same time, the waste material generated by cutting can be wound upwards above the guide roller, providing a convenient conveying path for the subsequent waste material processing process, and avoiding the accumulation of waste material that affects the normal operation of the equipment.

[0022] (2) When the waste material is wound upward above the guide roller, the warm air blower is started. At this time, the hot air generated by the warm air blower is continuously delivered to the air supply box through the pipe. During the flow of the air supply box, the airflow will impact and drive the impeller to rotate. The central shaft of the impeller is connected to the linkage shaft through the belt linkage assembly. Therefore, the rotation of the impeller will further drive the linkage shaft to rotate, thereby driving the fixed plate fixedly connected to the lower end of the linkage shaft to rotate synchronously. At the same time, the swing plate is connected to the air supply box through the first guide tube. The hot air in the air supply box will be continuously delivered to the nozzle set on the lower surface of the swing plate through the first guide tube, which will soften the waste material.

[0023] (3) The swing plate can swing back and forth under the combined action of the limit frame and the adjustment plate. Therefore, the hot air sprayed from the nozzle will evenly cover and blow onto the waste surface wrapped above the guide roller as the swing plate swings. This hot air can soften the waste, making its material more flexible, which is convenient for subsequent curling and collection or other processing operations. It effectively avoids problems such as collection difficulties or equipment jamming caused by the waste being too hard.

[0024] (4) During the rotation of the fixed disk, the first magnetic blocks distributed in a ring array on its surface will generate intermittent like-pair repulsive forces with the second magnetic blocks distributed on the lower surface of the drive disk. The drive disk moves up and down continuously on the linkage shaft. The contact plate fixedly connected to the outer end of the drive disk moves up and down with it. When the contact plate moves down, its lower end will slide down along the inclined edge of the contact frame. Due to the guiding effect of the inclined edge, the contact frame will be subjected to a horizontal thrust, thereby driving the push plate to overcome the tension of the reset spring and slide along the limit rod towards the calendering assembly, pushing the material to be processed on the feeding plate forward a distance, ensuring that the material to be processed is continuously and evenly transported to the calendering rollers of the calendering assembly, effectively avoiding problems such as calendering thickness deviation and film wrinkles caused by untimely material supply or uneven pushing, and significantly improving the continuity and stability of calendering processing.

[0025] (5) The upper part of the pusher plate is connected to the air supply box through the second guide tube. Some of the hot air in the air supply box can be transported to the vicinity of the pusher plate through the second guide tube, which plays a certain role in preheating the material to be processed on the feeding plate. This helps the material to maintain a suitable temperature and softness before entering the calendering roll, and further optimizes the calendering effect. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the feeding plate of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the calendering assembly of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 5 This is a three-dimensional structural diagram of the air supply box of the present invention;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the fixed disk of the present invention;

[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of the limiting frame of the present invention;

[0033] Figure 8 This is a schematic diagram of the three-dimensional structure of the contact frame of the present invention;

[0034] Figure 9 This is a schematic diagram of the three-dimensional structure of the first magnetic block of the present invention.

[0035] In the diagram: 1. Calendering assembly; 2. Traction assembly; 3. Adjustment assembly; 4. Warm air blower; 5. Guide roller; 6. Feeding plate; 7. Air supply box; 8. Fan wheel; 9. Positioning plate; 10. Cutting blade; 11. Belt linkage assembly; 12. Linkage shaft; 13. Fixed plate; 14. Limiting frame; 15. Swinging plate; 16. Nozzle; 17. First guide tube; 18. Second guide tube; 19. Adjustment plate; 20. Drive plate; 21. First magnetic block; 22. Second magnetic block; 23. Contact plate; 24. Contact frame; 25. Limiting rod; 26. Return spring; 27. Push plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: As Figure 1 - Figure 4 The present invention provides the following technical solution: a calender for composite packaging film and its processing method, wherein a traction component 2 is provided on the side of the calender assembly 1, and an adjustment component 3 for adjusting the spacing between the calender rollers is provided above the calender assembly 1, and a feeding plate 6 for placing materials is fixedly connected to the other side of the calender assembly 1, a positioning plate 9 is also fixedly connected to the side of the calender assembly 1, and a cutting blade 10 is fixedly connected to both sides of the positioning plate 9, and the cutting edge of the cutting blade 10 is set facing the calender roller side, and the waste material after cutting is wrapped around the guide roller 5.

[0038] In actual calendering operations, the positioning plate 9 not only provides a stable installation base for the cutting blade 10, but its own structural design also plays a good guiding and positioning role in the conveying of the composite packaging film, ensuring that the film material can maintain a stable posture when passing through the cutting process, avoiding inaccurate cutting position due to film material deviation, and further ensuring the neatness of the edges of the waste material and the finished film after cutting. The setting of the guide roller 5 cleverly changes the conveying direction of the waste material, turning it from horizontal output to upward winding, saving space under the equipment, avoiding the waste material from falling and accumulating directly, and providing a reasonable installation position and conveying path for possible subsequent waste material recycling, making the entire calendering process more orderly and efficient.

[0039] Example 2: Figure 5 - Figure 7The present invention provides the following technical solution: a calender for composite packaging film and its processing method, wherein a guide roller 5 for guiding edge waste is provided on the upper side of the calender assembly 1, and a softening mechanism is provided above the guide roller 5 and in front of the calender assembly 1. The softening mechanism softens the waste by reciprocating the swing plate 15 contained therein. The softening mechanism includes a warm air blower 4 fixedly installed on the calender assembly 1, an air supply box 7 fixedly connected to the calender assembly 1, and the air outlet of the warm air blower 4 is connected through the air supply box 7. A fan wheel 8 is rotatably connected inside the air supply box 7, and the central axis of the fan wheel 8 extends to the lower surface of the air supply box 7. A linkage shaft 12 is rotatably connected to the side of the calender assembly 1, and the lower end of the linkage shaft 12 is fixed. A fixed plate 13 is connected, and a belt linkage assembly 11 is provided between the linkage shaft 12 and the central shaft of the impeller 8. The linkage shaft 12 drives the fixed plate 13 to rotate through the belt linkage assembly 11. The swing plate 15 is rotatably connected to the upper side of the calendering assembly 1, and a limit frame 14 is fixedly connected to the upper side of the calendering assembly 1. The limit frame 14 is arranged in an arc shape. The side of the swing plate 15 is slidably connected to the inside of the limit frame 14. An adjustment plate 19 is hinged to the side of the lower surface of the limit frame 14, and the other end of the adjustment plate 19 is hinged to the side of the swing plate 15. A nozzle 16 is fixedly connected to the lower surface of the swing plate 15, and a first guide tube 17 is connected through the side of the nozzle 16. The other end of the first guide tube 17 is connected through the side of the air supply box 7.

[0040] In practical applications, the heater 4 serves as the core power source for the softening mechanism. The temperature of the hot air it generates can be adjusted according to the characteristics of composite packaging film waste of different materials, ensuring that the hot air effectively softens the waste without damaging or melting it due to excessive temperature. The hot air delivered by the heater 4 is evenly distributed and impacts the impeller 8, ensuring the stability of the impeller 8's rotation and the continuity of power output. The impeller 8 can rotate efficiently under the propulsion of the airflow, and the power is stably transmitted to the linkage shaft 12 through the belt linkage assembly 11. The bearing connection between the linkage shaft 12 and the calendering assembly 1 ensures its smooth rotation and reduces energy loss. The fixed disc 13 rotates under the drive of the linkage shaft 12. At the same time, the adjusting plate 19 can drive the swing plate 15 to swing precisely back and forth within the arc-shaped track of the limiting frame 14. The arc-shaped structure design of the limiting frame 14 matches the swing trajectory of the swing plate 15, effectively limiting the swing plate 15 and reducing the frictional resistance during the swing process. Since the swing plate 15 is connected to the air supply box 7 through the first guide pipe 17, the hot air in the air supply box 7 will be continuously delivered to the nozzle 16 on the lower surface of the swing plate 15 through the first guide pipe 17. As the swing plate 15 swings back and forth, it will be evenly blown onto the waste surface wrapped above the guide roller 5, efficiently and evenly softening the waste, providing a strong guarantee for subsequent waste collection and treatment.

[0041] Example 3: Figure 7 - Figure 9 The present invention provides the following technical solution: a calender for composite packaging film and its processing method, wherein a pushing mechanism is provided between the feeding plates 6 and the feeding plate 6. The pushing mechanism, through the operation of the softening mechanism, synchronously pushes the fed material to ensure the continuity and stability of the calendering. The pushing mechanism includes a drive disk 20 slidably connected to the outer side of the linkage shaft 12, and the drive disk 20 is located above the drive disk 12. A second magnetic block 22 is fixedly connected to the lower surface of the drive disk 20, and a first magnetic block 21 is fixedly connected to the upper surface of the fixed disk 13. The first magnetic block 21 and the second magnetic block 22 are both arranged in a ring array. The first magnetic block 21 and the second magnetic block 22 are magnetically identical. The outer end of the drive disk 20 is fixedly connected to a contact plate 23, and the lower end of the contact plate 23 is arc-shaped. The side of the feeding plate 6 is fixedly connected to a limit rod 25, and a pusher plate 27 is slidably connected between the two sets of limit rods 25. The rear side of the pusher plate 27 is fixedly connected to a contact frame 24, and the upper side of the contact frame 24 is inclined. The lower end of the contact plate 23 contacts the inclined side of the contact frame 24. A return spring 26 is fixedly connected between the pusher plate 27 and the end of the limit rod 25. A second guide tube 18 is connected through the upper part of the pusher plate 27 and the air supply box 7.

[0042] During the rotation of the fixed disk 13, the first magnetic block 21 on the upper surface of the fixed disk 13 rotates with it. Since the first magnetic block 21 and the second magnetic block 22 on the lower surface of the drive disk 20 have the same magnetism, an intermittent repulsive force is generated between them during the rotation, pushing the drive disk 20 to slide upward on the linkage shaft 12. When the first magnetic block 21 and the second magnetic block 22 are misaligned, the drive disk 20 returns to its original position under its own gravity. This cycle repeats, causing the drive disk 20 to reciprocate up and down. While the drive disk 20 is moving up and down, the lower end of the contact plate 23 at its outer end contacts the inclined edge of the contact frame 24 and slides relative to it. Under the push of the contact plate 23, the contact frame 24 drives the pusher plate 27 to slide along the limit rod 25 towards the calendering assembly 1. When the push plate 27 moves upward and disengages from the contact frame 24, the push plate 27 slides back to its original position under the elastic restoring force of the push plate 26. This achieves the reciprocating pushing action of the push plate 27 on the feed plate 6, continuously and stably pushing the material to be processed on the feed plate 6 towards the calendering rollers of the calendering assembly 1, ensuring the continuity of material supply. At the same time, the hot air delivered to the vicinity of the push plate 27 through the second guide pipe 18 can preheat the bottom and surrounding environment of the material to be processed stacked on the feed plate 6, effectively preventing the material from becoming brittle due to low temperature, ensuring that the material has good plasticity when entering the calendering rollers, thereby further improving the quality uniformity of the calendered product.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A calender for composite packaging film, comprising a calendering assembly (1), wherein a traction assembly (2) is provided on one side of the calendering assembly (1), and an adjustment assembly (3) for adjusting the spacing between the calendering rollers is provided above the calendering assembly (1), and a feeding plate (6) for placing materials is fixedly connected to the other side of the calendering assembly (1), characterized in that, The upper side of the calendering assembly (1) is provided with a guide roller (5) for guiding the side waste material. A softening mechanism is provided above the guide roller (5) and in front of the calendering assembly (1). The softening mechanism reciprocates by swinging the swing plate (15) it contains to supply air to soften the waste material. A pushing mechanism is provided between the feeding plate (6) and the feeding plate (6). The pushing mechanism pushes the material in synchronously through the operation of the softening mechanism to ensure the continuity and stability of the material calendering.

2. The calendering machine for composite packaging film according to claim 1, characterized in that: The calendering assembly (1) is also fixedly connected to a positioning plate (9), and a cutting blade (10) is fixedly connected to both sides of the positioning plate (9). The cutting edge of the cutting blade (10) is set facing the calendering roller, and the cut waste is wrapped around the guide roller (5).

3. A calender for composite packaging film according to claim 2, characterized in that: The softening mechanism includes a heater (4) fixedly installed on the calendering assembly (1), an air supply box (7) fixedly connected to the calendering assembly (1), and the air outlet of the heater (4) is connected through the air supply box (7). An impeller (8) is rotatably connected inside the air supply box (7), and the central axis of the impeller (8) extends to the lower surface of the air supply box (7).

4. A calender for composite packaging film according to claim 3, characterized in that: The side of the calendering assembly (1) is rotatably connected to a linkage shaft (12), and the lower end of the linkage shaft (12) is fixedly connected to a fixed disk (13). A belt linkage assembly (11) is provided between the linkage shaft (12) and the central axis of the wind turbine (8). The linkage shaft (12) drives the fixed disk (13) to rotate through the belt linkage assembly (11).

5. A calender for composite packaging film according to claim 4, characterized in that: The swing plate (15) is rotatably connected to the upper side of the rolling assembly (1), and the upper side of the rolling assembly (1) is also fixedly connected to the limit frame (14), and the limit frame (14) is arranged in an arc shape. The side of the swing plate (15) is slidably connected to the inside of the limit frame (14). The lower surface of the limit frame (14) is hinged to the side of the adjustment plate (19), and the other end of the adjustment plate (19) is hinged to the side of the swing plate (15).

6. A calender for composite packaging film according to claim 5, characterized in that: A nozzle (16) is fixedly connected to the lower surface of the swing plate (15), and a first guide tube (17) is connected through the side of the nozzle (16), and the other end of the first guide tube (17) is connected through the side of the air supply box (7).

7. A calender for composite packaging film according to claim 6, characterized in that: The feeding mechanism includes a drive disk (20) slidably connected to the outside of the linkage shaft (12), and the drive disk (20) is located above the drive disk (20). A second magnetic block (22) is fixedly connected to the lower surface of the drive disk (20), and a first magnetic block (21) is fixedly connected to the upper surface of the fixed disk (13). The first magnetic block (21) and the second magnetic block (22) are arranged in a ring array, and the first magnetic block (21) and the second magnetic block (22) have the same magnetism.

8. A calender for composite packaging film according to claim 7, characterized in that: The outer end of the drive plate (20) is fixedly connected to a contact plate (23), and the lower end of the contact plate (23) is set in an arc shape. The side of the feeding plate (6) is fixedly connected to a limit rod (25), and a push plate (27) is slidably connected in front of the two sets of limit rods (25). The rear side of the push plate (27) is fixedly connected to a contact frame (24), and the upper side of the contact frame (24) is set in an inclined shape. The lower end of the contact plate (23) is in contact with the inclined side of the contact frame (24). A reset spring (26) is fixedly connected between the push plate (27) and the end of the limit rod (25). A second guide tube (18) is connected through the upper part of the push plate (27) and the air supply box (7).

9. A calender for composite packaging film and its processing method according to claim 8, characterized in that: Includes the following steps: S1. Place the material to be processed on the feeding plate (6), start the calendering assembly (1), the calendering roller inside the calendering assembly (1) starts to rotate, and at the same time, adjust the spacing between the upper and lower calendering rollers precisely according to the thickness requirements of the material by adjusting the assembly (3) to ensure that the calendering effect meets the process standard. After the calendering is completed, the composite packaging film passes through the positioning plate (9) under the assistance of the traction assembly (2). The cutting blade (10) set on the side inside the positioning plate (9) cuts the side of the composite packaging film, thereby separating the irregular waste material on the side. The waste material generated by cutting is then wound upwards above the guide roller (5) for subsequent processing. S2. While the calendering operation is underway, the heater (4) is started. The hot air generated by the heater (4) is delivered to the air supply box (7) through the pipe. When the airflow flows inside the air supply box (7), it drives the impeller (8) to rotate, which in turn causes the fixed plate (13) to rotate. The swing plate (15) is connected to the air supply box (7) through the first guide pipe (17). The hot air in the air supply box (7) will be continuously delivered to the nozzle (16) on the lower surface of the swing plate (15) through the first guide pipe (17). As the swing plate (15) swings back and forth, it is evenly blown onto the waste surface above the guide roller (5). S3. During the rotation of the fixed disk (13), the drive disk (20) moves up and down reciprocally. The lower end of the outer contact plate (23) contacts the inclined edge of the contact frame (24) and generates relative sliding. Under the push of the contact plate (23), the contact frame (24) drives the pusher plate (27) to slide along the limit rod (25) towards the calendering assembly (1), thereby realizing the reciprocating pushing action of the pusher plate (27) on the feeding plate (6), continuously and stably pushing the material to be processed on the feeding plate (6) to the calendering rollers of the calendering assembly (1), ensuring the continuity of material supply.

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