Pressing and gluing device for packaging film processing

Abstract

The utility model belongs to the technical field of packaging film pressing and gluing equipment, and particularly relates to a pressing and gluing device for packaging film processing. Comprising a base, two supporting plates, two unwinding rollers, a first guiding assembly, a second guiding assembly, a glue groove used for containing a waterproof adhesive, an adjusting assembly, two gluing rollers used for coating the waterproof adhesive, a pressing and covering assembly, an unwinding driving assembly, a winding driving assembly and two packaging films arranged on the corresponding unwinding rollers in a winding mode. And the two supporting plates are fixedly mounted at the top of the base and are symmetrically arranged front and back. The pressing and gluing device is reasonable in design, simple and convenient to operate and convenient to use, packaging films can be pressed and glued quickly and efficiently, meanwhile, the gluing thickness can be adjusted according to needs, the gluing uniformity and the pressing and gluing effect can be guaranteed, and the situation that traditional pressing and gluing equipment occupies a large space can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging film pressing and coating equipment, and particularly relates to a pressing and coating device for packaging film processing. Background Art

[0002] During the processing of packaging films, it is often necessary to perform pressing and coating on two layers of packaging films to achieve the processing and production of multi-layer packaging films. When traditional paper-plastic packaging films are pressed, the plastic film is bonded to the paper packaging film, aiming to improve the water vapor barrier performance of the finished packaging film by using the plastic film. However, in order to meet environmental protection requirements, the current paper-plastic packaging does not meet the requirements of single-material disposable packaging films because the proportion of paper in the packaging film is 80%. Therefore, the proportion of paper in the packaging film needs to be increased to more than 95%. As a result, plastic films cannot be used in the packaging film. However, after not using plastic films, the water vapor barrier performance of the packaging film is greatly reduced. To solve this problem, it is necessary to perform waterproof treatment on the paper packaging film. When manufacturing this kind of packaging film, generally, a waterproof adhesive is coated between two layers of paper packaging films to improve the water vapor barrier performance. The manufacturing process generally unfolds the paper on the unwind of the laminator, passes through the guide rollers and enters the coating roller. After the coating roller evenly coats the waterproof adhesive in the glue tank on the paper, the paper passes through the guide rollers again and is bonded to the paper unfolded on the unwind at the compounding roller, and the air is discharged. Finally, it is wound into a roll shape at the rewind. Subsequently, after curing in the curing chamber, it can be cut into the required size on the slitter. The packaging film produced in this way has the following advantages: 1. The manufacturing process is simple, and existing dry laminators or solvent-free laminators can be used for production. 2. Compared with the method of coating on the surface of the paper, the waterproof layer of this product will not be damaged, and there is no need to consider problems such as the bonding strength with the ink and dissolving the ink.

[0003] However, when using the traditional pressing and coating method to perform pressing and coating operations on the above-mentioned packaging films, most of them only perform coating operations on one paper packaging film and then bond them. Moreover, the thickness of the coating is mostly adjusted manually by adjusting the coating amount. During the process of coating and pressing the above-mentioned packaging film with the existing pressing and coating device, the pressing force on the packaging film also needs to be adjusted by separately adjusting the distance between the pressing rollers. The operation is somewhat cumbersome, and the adjustment accuracy is low. It is not only easy to cause uneven coating, but also easy to cause problems such as damage to the packaging film or insecure pressing, which will affect the quality of packaging film processing. In addition, the traditional packaging film pressing and coating device also has the problem of large space occupation.

[0004] In view of the above situation, the purpose of the utility model is to provide a pressing and coating device for packaging film processing.

[0005] The information disclosed in this background section is only intended to enhance the overall understanding of the background of the present utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the present utility model is to solve the drawbacks mentioned in the above background technology, and a pressing and coating device for packaging film processing is proposed.

[0007] The above technical purpose of the present utility model is achieved through the following technical solutions: A pressing and coating device for packaging film processing, including a base, two support plates, two unwinding rollers, a first guiding assembly, a second guiding assembly, a glue tank for containing waterproof adhesive, an adjusting assembly, two coating rollers for coating waterproof adhesive, a pressing assembly, an unwinding driving assembly, a winding driving assembly, and two packaging films respectively wound around the corresponding unwinding rollers;

[0008] Both of the two support plates are fixedly installed on the top of the base and are symmetrically arranged front and back. The winding roller and the two unwinding rollers are respectively axially fixedly installed with lower rotating shafts and upper rotating shafts, and the lower rotating shaft and the two upper rotating shafts are detachably installed on the two support plates. The unwinding driving assembly and the winding driving assembly are both arranged on the two support plates and are respectively connected to the two upper rotating shafts and the lower rotating shaft. The first guiding assembly and the second guiding assembly are both arranged on one side of the two support plates close to each other. The glue tank is fixedly installed on one side of the two support plates close to each other. The first guiding assembly and the second guiding assembly are respectively arranged on the upper and lower sides of the glue tank. Both of the two coating rollers are rotatably installed on the glue tank and are symmetrically arranged. The adjusting assembly is arranged on the glue tank and is adapted to the two coating rollers. The pressing assembly is arranged on one side of the two support plates close to each other and is located below the second guiding assembly, and the winding roller is located below the pressing assembly. The two packaging films are respectively wound around the corresponding unwinding rollers, and the ends of the two packaging films away from the unwinding rollers are wound around the first guiding assembly, the outer sides of the two coating rollers away from each other, the second guiding assembly and the pressing assembly and then fixed and wound around the winding roller.

[0009] Preferably, the first guiding assembly includes two first guiding rollers. Two first guiding rollers which are arranged parallel to each other are rotatably installed on one side of the two support plates close to each other, and the two first guiding rollers are respectively in contact with the corresponding packaging films.

[0010] Preferably, the adjusting assembly includes a U-shaped plate, a second motor, a lead screw, a scraping plate, and a plurality of guiding rods. The U-shaped plate is fixedly installed on the top of the glue tank. A scraping plate adapted to the two coating rollers is slidably installed in the U-shaped plate. The lead screw is rotatably installed on the U-shaped plate. The second motor is fixedly installed on the top of the U-shaped plate, and the output shaft of the second motor is axially fixedly connected to the lead screw. The lead screw is in threaded connection with the scraping plate. A plurality of guiding rods which are vertically slidably connected with the U-shaped plate are fixedly installed on the top side of the scraping plate.

[0011] Preferably, the second guiding assembly includes two second guiding rollers. On one side of the two support plates close to each other, two second guiding rollers arranged in parallel are rotatably installed. Both packaging films pass through the side where the two second guiding rollers are close to each other and are respectively in contact with the corresponding second guiding rollers.

[0012] Preferably, the pressing and covering assembly includes two pressing rollers, four sliders, two chutes, two sliding rods and four springs. On one side of the two support plates close to each other, chutes are respectively opened. In the two chutes, two sliders are slidably installed. On the four sliders, two pressing rollers arranged in parallel are rotatably installed. On the inner walls on both sides of the chute, the same sliding rod is fixedly installed. The sliding rod is slidably connected with the two sliders. On one side of the two sliders located in the same chute away from each other, springs are respectively fixedly installed. One ends of the two springs away from each other are respectively fixedly connected with the inner wall on the corresponding side of the chute, and the springs are movably sleeved on the outer side of the sliding rod.

[0013] Preferably, the unwinding driving assembly includes a first motor, two first gears, a rotating pin and two second gears. The first motor is fixedly installed on the rear side of the front support plate. The rotating pin is rotatably installed on the front side of the front support plate. On the output shafts of the rotating pin and the first motor, second gears are fixedly sleeved. The two second gears are meshed with each other. On the front ends of the two upper rotating shafts, first gears are fixedly sleeved. The two first gears are respectively meshed with the corresponding second gears.

[0014] Preferably, the winding driving assembly includes a third motor, a third gear and a fourth gear. The front end of the lower rotating shaft extends to the front side of the front support plate and is sleeved with a third gear through a steel cable. The third motor is fixedly installed on the front side of the front support plate. On the output shaft of the third motor, a fourth gear is fixedly sleeved. The fourth gear is meshed with the third gear.

[0015] Preferably, four placing grooves are respectively opened on the two support plates. The width of the placing groove at the rear side is greater than that of the placing groove at the front side. Annular grooves are respectively opened on the upper rotating shaft and the lower rotating shaft. The upper rotating shaft and the lower rotating shaft are respectively movably connected with the front support plate through the annular grooves and the placing grooves at the front side, and the upper rotating shaft and the lower rotating shaft are respectively movably connected with the rear support plate through the placing grooves at the rear side, and the placing grooves are arranged obliquely upward.

[0016] Preferably, the first motor, the second motor and the third motor are all servo motors.

[0017] The beneficial effects of the utility model are:

[0018] First, the present utility model provides an efficient and stable packaging film gluing and laminating device. Its structural design is reasonable, and the operation is convenient. It can meet the needs of large-scale production. Through precise motor control, precise control of each link such as unwinding, gluing, laminating, and winding of the packaging film is achieved, thus ensuring the consistency and stability of the processing quality.

[0019] Secondly, the first guiding component and the second guiding component of the present utility model can effectively guide the path of the packaging film during the gluing process, avoiding the possible deviation or distortion of the packaging film during transmission, thus ensuring the uniformity and accuracy of gluing. At the same time, the setting of the adjusting component enables users to adjust the thickness of the adhesive on the gluing roller according to actual needs, further improving the flexibility and adaptability of gluing.

[0020] In addition, through the laminating operation of the two pressing rollers, the laminating component not only tightly presses the two glued packaging films together, but also effectively excludes the air between the two packaging films, ensuring the uniformity of laminating and gluing and the processing effect. This design not only improves the processing quality of the packaging film, but also extends the service life of the packaging film.

[0021] Furthermore, the adoption of the unwinding drive component and the winding drive component makes the entire device more stable and reliable during operation. The design that the first motor, the second motor, and the third motor are all servo motors can achieve precise speed control, avoiding problems such as deformation or damage of the packaging film caused by speed mismatch. At the same time, the use of servo motors also improves the automation degree of the entire device, reducing the difficulty and error of manual operation.

[0022] Finally, the support plate in the present utility model is ingeniously designed. By opening the placement groove and the annular groove, the upper rotating shaft and the lower rotating shaft can ensure good stability during work, and at the same time, the installation and disassembly of the unwinding roller and the winding roller become very convenient, thereby improving the maintenance efficiency and convenience of the equipment, and effectively reducing the situation of large space occupation.

[0023] In summary, the packaging film gluing and laminating device provided by the present utility model has the advantages of high efficiency, stability, flexibility, and easy maintenance, and is applicable to the processing and production of packaging films of various scales, which is of great significance for improving the production efficiency and reducing costs in the packaging film processing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 Schematic three - dimensional structure diagram of a pressing and coating device for packaging film processing proposed by the present utility model;

[0026] Figure 2 Schematic cross - sectional structure diagram of a pressing and coating device for packaging film processing proposed by the present utility model;

[0027] Figure 3 Schematic structure diagram of part A in a pressing and coating device for packaging film processing proposed by the present utility model;

[0028] Figure 4 Schematic three - dimensional structure diagram of the glue tank, glue - applying roller and adjusting assembly parts in a pressing and coating device for packaging film processing proposed by the present utility model;

[0029] Figure 5 Schematic three - dimensional structure diagram of the pressing component part in a pressing and coating device for packaging film processing proposed by the present utility model;

[0030] Figure 6 Schematic three - dimensional structure diagram of the unwinding drive assembly, upper rotating shaft and unwinding roller parts in a pressing and coating device for packaging film processing proposed by the present utility model.

[0031] In the figure: 1, base; 11, support plate; 2, unwinding roller; 21, upper rotating shaft; 22, gear one; 23, motor one; 24, gear two; 3, guide roller one; 4, glue tank; 41, glue - applying roller; 42, U - shaped plate; 43, glue - scraping plate; 431, motor two; 432, lead screw; 433, guide rod; 5, guide roller two; 6, pressing roller; 61, slider; 62, spring; 63, slide bar; 7, winding roller; 71, lower rotating shaft; 72, gear three; 73, motor three; 74, gear four; 8, packaging film. Detailed implementation manners

[0032] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0033] Refer to Figure 1-6, A laminating and gluing device for packaging film processing, comprising a base 1, two support plates 11, two unwind rollers 2, a glue tank 4 for containing waterproof adhesive, two glue rollers 41 for coating the waterproof adhesive, and two packaging films 8 respectively wound around the corresponding unwind rollers 2. The two support plates 11 are both fixedly installed on the top of the base 1 and are arranged symmetrically front and back. The winding roller 7 and the two unwind rollers 2 are respectively axially fixedly installed with a lower rotating shaft 71 and an upper rotating shaft 21, and the lower rotating shaft 71 and the two upper rotating shafts 21 are detachably installed on the two support plates 11. A first motor 23 is fixedly installed on the rear side of the front support plate 11. A rotating pin is rotatably installed on the front side of the front support plate 11. Gear two 24 is fixedly sleeved on both the rotating pin and the output shaft of the first motor 23. The two gear two 24 are meshed with each other. Gear one 22 is fixedly sleeved on the front ends of the two upper rotating shafts 21. The two gear one 22 are respectively meshed with the corresponding gear two 24, which can control the two unwind rollers 2 to perform the unwinding operation of the packaging film 8 synchronously. The front end of the lower rotating shaft 71 extends to the front side of the front support plate 11 and is sleeved with a steel cable with a gear three 72. A third motor 73 is fixedly installed on the front side of the front support plate 11. Gear four 74 is fixedly sleeved on the output shaft of the third motor 73. Gear four 74 is meshed with gear three 72, which can control the lower rotating shaft 71 to drive the winding roller 7 to perform the winding operation. Two guide rollers one 3 arranged parallel to each other are rotatably installed on the side of the two support plates 11 close to each other. The two guide rollers one 3 are respectively in contact with the corresponding packaging film 8, which can provide guidance for the packaging film 8 unwound from the unwind roller 2, so that it can stably pass through the glue roller and realize the gluing operation. The glue tank 4 is fixedly installed on the side of the two support plates 11 close to each other. The two glue rollers 41 are both rotatably installed on the glue tank 4 and are arranged symmetrically. Two guide rollers two 5 arranged parallel to each other are rotatably installed on the side of the two support plates 11 close to each other. Both packaging films 8 pass through the side of the two guide rollers two 5 close to each other and are respectively in contact with the corresponding guide rollers two 5, which can provide guidance for the coated packaging film 8 and facilitate the next laminating operation. A U-shaped plate 42 is fixedly installed on the top of the glue tank 4. A scraping plate 43 adapted to the two glue rollers is slidably installed in the U-shaped plate 42. A lead screw 432 is rotatably installed on the U-shaped plate 42. A second motor 431 is fixedly installed on the top of the U-shaped plate 42. The output shaft of the second motor 431 is axially fixedly connected to the lead screw 432, and the lead screw 432 is threadedly connected to the scraping plate 43. A plurality of guide rods 433 vertically slidably connected to the U-shaped plate 42 are fixedly installed on the top side of the scraping plate 43, which can adjust the thickness of the glue adhered to the glue roller 41 as needed, so as to facilitate the adjustment of the amount and thickness of the glue applied to the packaging film 8 by the glue roller 41. Sliding grooves are respectively opened on the side of the two support plates 11 close to each other. Two sliders 61 are slidably installed in each of the two sliding grooves. Two pressure rollers 6 arranged parallel to each other are rotatably installed on the four sliders 61. A same slide bar 63 is fixedly installed on the inner walls of both sides of the sliding groove.The sliding rod 63 is slidably connected to the two sliders 61. On the side of the two sliders 61 located in the same chute and away from each other, springs 62 are fixedly installed. The ends of the two springs 62 away from each other are respectively fixedly connected to the inner walls of the corresponding sides of the chute. The spring 62 is movably sleeved on the outside of the sliding rod 63 and can control the two pressure rollers 6 to perform a pressing operation on the two packaging films 8 after the gluing is completed. It can not only press and fix the two glued packaging films 8 together, but also discharge the air between the two packaging films 8, thereby ensuring the effect of the pressing and gluing operation of the packaging film 8. The two packaging films 8 are respectively wound around the corresponding unwinding rollers 2. The ends of the two packaging films 8 away from the unwinding rollers 2 are wound around the sides close to each other of the two guiding rollers 1-3, the sides away from each other of the two gluing rollers 41, the sides close to each other of the two guiding rollers 2-5, and the sides close to each other of the two pressure rollers 6 and then fixed and wound around the winding roller 7.

[0034] In this embodiment, in order to ensure that the upper rotating shaft 21 and the lower rotating shaft 71 rotate stably during operation, and at the same time facilitate the quick disassembly and assembly of the unwinding roller 2 and the winding roller 7, four placement grooves are provided on both support plates 11. The width of the placement groove at the rear is greater than the width of the placement groove at the front. The widths of the upper placement groove at the rear and the lower placement groove at the rear are respectively the same as the diameter of the upper rotating shaft 21 and the diameter of the lower rotating shaft 71. Annular grooves are provided on both the upper rotating shaft 21 and the lower rotating shaft 71. The upper rotating shaft 21 and the lower rotating shaft 71 are respectively movably connected to the front support plate 11 through the annular grooves and the front placement grooves. The upper rotating shaft 21 and the lower rotating shaft 71 are respectively movably connected to the rear support plate 11 through the rear placement grooves, and the placement grooves are arranged obliquely upward.

[0035] In this embodiment, in order to ensure the precise control of the unwinding and winding speeds, avoid the situation that the packaging film 8 is pulled and deformed during the pressing and gluing operation of the waterproof adhesive, which affects the processing quality, and at the same time achieve the precise adjustment of the height of the scraping plate 43 and the purpose of precisely controlling the thickness of the waterproof adhesive coated on the packaging film 8 by the gluing roller 41. For this reason, the first motor 23, the second motor 431, and the third motor 73 all adopt servo motors in the existing known technologies.

[0036] For the circuits, electronic components, and module mechanisms involved, existing technologies are adopted. Those skilled in the art can fully implement them without further elaboration. The content protected by this application does not involve improvements to software, circuits, and methods.

[0037] Working principle: When in use, first connect the power supply and adjust the height of the squeegee 43 through the lead screw 432 controlled by the second motor 431 according to the required thickness of the glue application, so as to control the distance between the squeegee 43 and the glue roller 41, and then be able to meet the requirement of controlling the glue application thickness. Then, place two unwinding rollers 2 wound with packaging films 8 of the same specification on the corresponding two placement grooves through the upper rotating shaft 21, and control the two unwinding rollers 2 to perform synchronous unwinding operations through the cooperation of the first motor 23, two second gears 24 and two first gears 22. The ends of the two packaging films 8 far from the unwinding rollers 2 are successively wound around two first guide rollers 3, two glue rollers 41, two second guide rollers 5 and two pressure rollers 6, and finally wound around and on the winding roller 7. Then, control the first motor 23 and the third motor 73 to work simultaneously, and respectively control the speeds of the first motor 23 and the third motor 73 through the servo controller, so that the length of the packaging film 8 released from the unwinding roller 2 in unit time is the same as the length wound by the winding roller 7 in the same time. As the unwinding roller 2 continuously unwinds and the winding roller 7 continuously winds, the packaging film 8 is stably wound around the glue roller 41 under the guidance of the first guide roller 3 to realize the glue application of the packaging film 8, and the excess glue is scraped off under the action of the squeegee 43. Then, after being guided by the second guide roller 5, it passes between the two pressure rollers 6. Under the cooperation of the spring 62, the slider 61 and the slide bar 63, the two pressure rollers 6 can perform a pressing operation on the glue-applied packaging film 8, which can not only squeeze the two packaging films 8 together, but also discharge the air between the two packaging films 8, thus completing the pressing and glue application operation of the packaging film 8 and realizing the continuous pressing and glue application operation of the two packaging films 8. It is not only convenient to operate, but also can improve the efficiency of the pressing and glue application operation of the packaging film 8, and can avoid the situation of pulling and deforming the packaging film 8 during the pressing and glue application operation of the packaging film 8, so as to ensure the quality of the pressing and glue application operation of the packaging film 8.

[0038] The above has introduced in detail a pressing and glue application device for packaging film processing provided by the present utility model. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea 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 modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A gluing device for packaging film processing, characterized in that: It comprises a base (1), two support plates (11), two unwinding rollers (2), a rewinding roller (7), a first guide component, a second guide component, a glue groove (4) for containing waterproof adhesive, an adjustment component, two adhesive rollers (41) for applying waterproof adhesive, a pressing component, an unwinding drive component, a rewinding drive component, and two packaging films (8) respectively wound around corresponding unwinding rollers (2); The two support plates (11) are fixedly mounted on the top of the base (1) and are arranged symmetrically in front and back. The winding roller (7) and the two unwinding rollers (2) are respectively axially fixedly mounted with a lower rotating shaft (71) and an upper rotating shaft (21), and the lower rotating shaft (71) and the two upper rotating shafts (21) can be detachably mounted on the two support plates (11). The unwinding drive assembly and the winding drive assembly are both arranged on the two support plates (11) and are respectively connected to the two upper rotating shafts (21) and the lower rotating shaft (71). The guide assembly 1 and the guide assembly 2 are both arranged on the side of the two support plates (11) close to each other. The glue groove (4) is fixedly mounted on the side of the two support plates (11) close to each other. The guide component 1 and the guide component 2 are respectively arranged on the upper and lower sides of the glue groove (4), the two upper glue rollers (41) are rotatably mounted on the glue groove (4) and are symmetrically arranged, the adjustment component is arranged on the glue groove (4) and is adapted to the two upper glue rollers (41), the pressing component is arranged on the side where the two support plates (11) are close to each other and is located below the guide component 2, and the winding roller (7) is located below the pressing component, the two packaging films (8) are respectively wound on the corresponding unwinding rollers (2), and the ends of the two packaging films (8) away from the unwinding rollers (2) are wound around the guide component 1, the side where the two upper glue rollers (41) are away from each other, the guide component 2 and the pressing component, and then fixed and wound on the winding roller (7).

2. The gluing device for packaging film processing according to claim 1, characterized in that: The guide assembly comprises two guide rollers (3). Two guide rollers (3) arranged parallel to each other are rotatably mounted on the side of the two support plates (11) close to each other. The two guide rollers (3) are respectively in contact with corresponding packaging films (8).

3. The gluing device for packaging film processing according to claim 1, characterized in that: The adjustment assembly comprises a U-shaped plate (42), a second motor (431), a screw (432), a rubber scraper (43) and a plurality of guide rods (433); the top of the rubber groove (4) is fixedly mounted with the U-shaped plate (42); a rubber scraper (43) adapted to the two rubber rollers is slidably mounted in the U-shaped plate (42); a screw (432) is rotatably mounted on the U-shaped plate (42); the top of the U-shaped plate (42) is fixedly mounted with the second motor (431); the output shaft of the second motor (431) is axially fixedly connected to the screw (432); the screw (432) is threadedly connected to the rubber scraper (43); and a plurality of guide rods (433) vertically slidably connected to the U-shaped plate (42) are fixedly mounted on the top side of the rubber scraper (43).

4. The gluing device for packaging film processing according to claim 1, characterized in that: The guide assembly 2 comprises two guide rollers 2 (5), and two guide rollers 2 (5) arranged parallel to each other are rotatably mounted on the side where the two support plates (11) are close to each other. The two packaging films (8) pass through the side where the two guide rollers 2 (5) are close to each other and contact the corresponding guide rollers 2 (5) respectively.

5. The gluing device for packaging film processing according to claim 1, characterized in that: The pressing component comprises two pressing rollers (6), four sliding blocks (61), two sliding grooves, two sliding rods (63) and four springs (62). The two support plates (11) are provided with sliding grooves on the sides close to each other. Two sliding blocks (61) are slidably installed in the two sliding grooves. Two pressing rollers (6) arranged parallel to each other are rotatably installed on the four sliding blocks (61). The same sliding rod (63) is fixedly installed on the inner walls on both sides of the sliding groove. The sliding rod (63) is slidably connected to the two sliding blocks (61). The two sliding blocks (61) in the same sliding groove are fixedly installed on the sides away from each other. The ends of the two springs (62) away from each other are respectively fixedly connected to the inner wall of the corresponding side of the sliding groove, and the springs (62) are movably sleeved on the outside of the sliding rod (63).

6. The gluing device for packaging film processing according to claim 1, characterized in that: The unwinding drive assembly comprises a motor 1 (23), two gear 1s (22), a rotating pin and two gear 2s (24); the motor 1 (23) is fixedly mounted on the rear side of the support plate (11) located at the front side; the rotating pin is rotatably mounted on the front side of the support plate (11) located at the front side; the output shaft of the rotating pin and the motor 1 (23) is fixedly sleeved with gear 2 (24); the two gear 2s (24) are meshed with each other; the front ends of the two upper rotating shafts (21) are fixedly sleeved with gear 1 (22); the two gear 1s (22) are respectively meshed with the corresponding gear 2 (24).

7. The gluing device for packaging film processing according to claim 6, characterized in that: The winding drive assembly comprises a motor three (73), a gear three (72) and a gear four (74); the front end of the lower rotating shaft (71) extends to the front side of the front support plate (11) and is provided with a gear three (72) in a steel cable sleeve; the motor three (73) is fixedly installed on the front side of the support plate (11) on the front side; a gear four (74) is fixedly sleeved on the output shaft of the motor three (73); the gear four (74) is meshed with the gear three (72); the motor one (23), the motor two (431) and the motor three (73) are all servo motors.

8. The gluing device for packaging film processing according to claim 1, characterized in that: Four placement grooves are provided on the two support plates (11), the width of the placement grooves on the rear side is greater than the width of the placement grooves on the front side, annular grooves are provided on the upper rotating shaft (21) and the lower rotating shaft (71), the upper rotating shaft (21) and the lower rotating shaft (71) are movably connected to the support plate (11) on the front side through the annular grooves and the placement grooves on the front side, and the upper rotating shaft (21) and the lower rotating shaft (71) are movably connected to the support plate (11) on the rear side through the placement grooves on the rear side, and the placement grooves are arranged to be inclined upward.

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