Hot melt adhesive film rewinding device with accurate tension control and automatic deviation correction functions

Abstract

The utility model provides a hot melt adhesive film rewinding device with accurate tension control and automatic deviation correction functions, which has the accurate tension control and automatic deviation correction functions and comprises a rack, an unwinding component, a driving roller group and a winding component with the automatic deviation correction function are sequentially arranged on the rack, and a controller is arranged on the rack. The unwinding roller and the winding roller are driven by an unwinding servo motor and a winding servo motor respectively, and the sliding table used for correcting deviation is driven by a servo electric cylinder. And the controller is connected with the unwinding servo motor, the winding servo motor and the tension sensing roller to form an automatic tension control closed-loop system. And the controller is also connected with the deviation rectifying sensor and the servo electric cylinder to form an automatic deviation rectifying control system. According to the polymer hot melt adhesive film winding device, the tension of a hot melt adhesive film and the offset error of the end face of a coiled material can be rapidly and accurately adjusted, the consistency of the tension of the hot melt adhesive film and the flatness of the end face of the coiled material in the whole rewinding process are ensured, the product quality is remarkably improved, and the polymer hot melt adhesive film winding device belongs to the technical field of polymer hot melt adhesive film winding devices.

Description

Technical Field

[0001] The utility model relates to hot melt adhesive film auxiliary processing equipment, in particular to a hot melt adhesive film rewinding device with precise tension control and automatic deviation correction functions. Background Art

[0002] Hot melt adhesive film is a solid film adhesive material with release paper, release film or without substrate, which is made of thermoplastic resin or elastomer as base material, with tackifier, plasticizer, antioxidant, flame retardant and filler added, and then melt mixed, and then formed through a series of processes such as extrusion, casting, and winding. Its significant advantages include high bonding strength, environmental protection without solvent pollution, good toughness, large elongation at break and excellent resilience, so it is widely used in industrial fields such as wood, electronic appliances, automobile interior manufacturing, clothing and shoes.

[0003] In order to facilitate transportation and storage, facilitate further processing and use, correct product misalignment, and improve the flatness and appearance quality of the coil, the formed hot melt adhesive film coil usually needs to be rewound by a rewinding device. During the rewinding process, it is particularly important to accurately control the tension of the hot melt adhesive film and the deviation of the coil end surface, which is directly related to the quality of the rewound product.

[0004] At present, there are mainly two ways of tension adjustment mechanism in hot melt adhesive film rewinding device: one is to connect the magnetic powder clutch at the output end of the traction motor, and adjust the current of the magnetic powder clutch according to the tension data measured in real time by the tension sensor, so as to automatically control the tension and speed of the hot melt adhesive film; the other is to change the stroke of the adjustment roller through the telescopic movement of the driving mechanism (such as cylinder, hydraulic cylinder, rolling screw nut pair, etc.) to control the tension or relaxation of the hot melt adhesive film during the rewinding process, so as to adjust its tension. However, both of the above methods are indirect methods of controlling the tension of the hot melt adhesive film, and have the disadvantages of low control accuracy and poor stability.

[0005] In addition, during the rewinding process, due to the disturbance of various random factors (such as mechanical vibration, etc.) at the production site, the end face of the rolled hot melt adhesive film will usually be offset to a certain extent, affecting the appearance of the product. Therefore, it is usually necessary to set a correction component in the rewinding device to control the offset accuracy of the end face of the coil in real time to keep the end face of the rolled hot melt adhesive film flat. At present, in industrial production, the driving unit of the correction component is still mainly air cylinders and hydraulic cylinders, which have disadvantages such as slow response speed and poor positioning accuracy, which to a certain extent affects the quality and production efficiency of the product. Utility Model Content

[0006] In view of the technical problems existing in the prior art, the purpose of the utility model is to provide a hot melt adhesive film rewinding device with precise tension control and automatic deviation correction functions, which can quickly and accurately control the tension of the hot melt adhesive film and the deviation accuracy of the end face of the coil during the rewinding process, effectively improving the production efficiency and quality of the product.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function comprises a frame, an unwinding assembly, a transmission roller group, a winding assembly, and a controller. The unwinding assembly, the transmission roller group, and the winding assembly are arranged on the frame in sequence from front to back; the unwinding assembly comprises an unwinding roller; the transmission roller group comprises a guide roller, a flattening roller, and a tension sensing roller arranged in parallel with each other; the winding assembly comprises a slide, a left and right translation mechanism, a hot melt adhesive film winding mechanism, a release paper winding mechanism, a belt transmission mechanism, a deviation correction sensor, and a hot melt adhesive film winding mechanism. The winding mechanism includes a hot melt adhesive film winding roller, and the release paper winding mechanism includes a release paper winding roller. Both the hot melt adhesive film winding mechanism and the release paper winding mechanism are installed on a slide, and the slide is installed on a frame through a left and right translation mechanism. The hot melt adhesive film winding roller and the release paper winding roller are rotated synchronously through a belt transmission mechanism; the tension sensing rod is connected to the controller, and the controller controls the rotation speed of the unwinding roller, the hot melt adhesive film winding roller, and the release paper winding roller; the deviation correction sensor is connected to the controller, and the controller controls the operation of the left and right translation mechanism.

[0009] Preferably, the unwinding assembly also includes an unwinding servo motor with a reducer, a first motor bracket, a slider coupling, a semi-open bearing seat, a rolling bearing, and a plum head handle screw; the unwinding roller is installed in the mounting hole of the semi-open bearing seat through the rolling bearing, the plum head handle screw locks the rolling bearing in the mounting hole of the semi-open bearing seat, the semi-open bearing seat is installed on the frame, the unwinding servo motor is fixed to the frame through the first motor bracket, and the slider coupling is arranged between the unwinding servo motor and the unwinding roller.

[0010] Preferably, the hot melt adhesive film winding mechanism also includes a winding servo motor with a reducer, a second motor bracket, a slider coupling, a semi-open bearing seat, a rolling bearing, and a plum head handle screw; the hot melt adhesive film winding roller is installed in the mounting hole of the semi-open bearing seat through the rolling bearing, the plum head handle screw locks the rolling bearing in the mounting hole of the semi-open bearing seat, the semi-open bearing seat is installed on the slide, the winding servo motor is fixed on the slide through the second motor bracket, and the slider coupling is arranged between the winding servo motor and the hot melt adhesive film winding roller.

[0011] Preferably, the release paper winding mechanism also includes an intermediate shaft, an axle frame, a slider coupling, a semi-open bearing seat, a rolling bearing, and a plum head handle screw; the release paper winding roller is installed in the mounting hole of the semi-open bearing seat through the rolling bearing, the plum head handle screw locks the rolling bearing in the mounting hole of the semi-open bearing seat, the semi-open bearing seat is installed on the slide, the intermediate shaft is installed on the slide through the axle frame, the intermediate shaft is connected to the belt drive mechanism, and the intermediate shaft is connected to the release paper winding roller through the slider coupling.

[0012] Preferably, the slider coupling comprises a convex and concave half coupling, wherein the end face of one of the cylindrical convex and concave half couplings is provided with a protrusion arranged along the diameter, and the end face of the other is provided with a groove arranged along the diameter, and the protrusion is embedded in the groove to realize the connection between the convex and concave half couplings.

[0013] Preferably, the left and right translation mechanism includes a slide drive mechanism and a linear guide pair; the linear guide pair includes a linear guide and a slider, the linear guide and the slider are respectively fixed to the frame and the slide by screws, and the slider translates left and right along the linear guide; the slide drive mechanism drives the slide to translate.

[0014] Preferably, the slide drive mechanism includes a servo electric cylinder and an electric cylinder bracket; the servo electric cylinder is mounted and fixed on the electric cylinder bracket, and the rod head of the piston rod of the servo electric cylinder is hinged to the slide through a pin; the electric cylinder bracket is fixed to the bottom end of the frame by screws.

[0015] Preferably, the belt transmission mechanism comprises an active synchronous pulley, a driven synchronous pulley and a synchronous belt; the active synchronous pulley is arranged in the hot melt adhesive film winding mechanism, and the driven synchronous pulley is arranged in the release paper winding mechanism.

[0016] Preferably, the deviation correction sensor is U-shaped, located between the tension sensing roller and the hot melt adhesive film winding roller, and is fixed to the side end of the frame through a sensor bracket.

[0017] Preferably, in the transmission roller group, the guide roller, flattening roller and tension sensing roller are arranged in sequence from front to back; the number of flattening rollers is two, and the heights of the two flattening rollers are consistent; the number of tension sensing rollers is one; the hot melt adhesive film winding roller is located above and behind the tension sensing roller, and the release paper winding roller is located below and behind the tension sensing roller.

[0018] Compared with the existing rewinding device, the utility model has the following advantages and effects:

[0019] (1) The unwinding roller and the rewinding roller in the utility model are driven by an unwinding servo motor and a rewinding servo motor respectively, and the servo motors have excellent response speed and excellent output torque adjustment performance. During the rewinding process, based on the tension data measured in real time by the tension sensing roller, the output torque of the rewinding and unwinding servo motors is independently controlled to quickly and accurately adjust the tension of the hot melt adhesive film, thereby ensuring the consistency of the hot melt adhesive film tension during the entire rewinding process and significantly improving the quality of the product.

[0020] (2) The controller is connected with the unwinding servo motor, the winding servo motor, and the tension sensing rod to form a tension automatic control closed-loop system to accurately control the tension of the hot melt adhesive film during the winding process.

[0021] (3) The controller is connected with the deviation correction sensor and the servo electric cylinder to form an automatic deviation correction control system to accurately control the deviation accuracy of the end surface of the hot melt adhesive film coil during the winding process.

[0022] (4) The utility model is provided with a hot melt adhesive film winding mechanism and a release paper winding mechanism, which can be used to rewind hot melt adhesive film rolls with release paper or release film. When the release paper winding mechanism is idle, it is also suitable for rewinding hot melt adhesive film rolls without a substrate.

[0023] (5) In the present invention, the driving unit of the deviation correction component adopts a servo electric cylinder, which has a higher response speed and excellent positioning accuracy compared with existing air cylinders, hydraulic cylinders, etc. This provides a guarantee for the rapid and accurate control of the deviation error of the end face of the coil.

[0024] (6) The specific arrangement of each roller in the unwinding assembly, drive roller group, and winding assembly (including arrangement order and arrangement position) ensures the rewinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a structural schematic diagram of a hot melt adhesive film rewinding device with precise tension control and automatic deviation correction functions.

[0026] Figure 2 It is a structural schematic diagram of the unwinding component.

[0027] Figure 3 It is an exploded diagram of the unwinding component.

[0028] Figure 4 It is a structural schematic diagram of the winding component.

[0029] Figure 5 It is an exploded schematic diagram of the winding component.

[0030] The numbers in the above figures are as follows: 1-frame; 2-unwinding assembly; 3-drive roller group; 4-winding assembly; 201-unwinding servo motor; 202-first motor bracket; 203-slider coupling; 204-semi-open bearing seat; 205-rolling bearing; 206-hexagon head handle screw; 207-unwinding roller; 301-guide roller; 302-flattening roller; 303-tension sensor rod; 304-bearing seat; 401-slide; 402-hot melt adhesive film winding mechanism; 403-release paper winding mechanism; 404-same Step belt; 405—correction sensor; 406—slide drive mechanism; 407—linear guide pair; 402-1—winding servo motor; 402-2—second motor bracket; 402-3—driving synchronous pulley; 402-4—hot melt adhesive film winding roller; 403-1—driven synchronous pulley; 403-2—intermediate shaft; 403-3—shaft frame; 403-4—release paper winding roller; 406-1—servo electric cylinder; 406-2—electric cylinder bracket; 407-1—linear guide; 407-2—slider; 408—pin shaft. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0032] Figure 1-4 The specific structure of the hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function of the utility model is shown, which includes a frame 1, on which an unwinding assembly 2, a transmission roller group 3 and a winding assembly 4 with automatic deviation correction function are arranged in parallel in sequence. The transmission roller group 3 includes a guide roller 301, a flattening roller 302 and a tension sensing rod 303 arranged in parallel with each other, and the two ends of the guide roller 301, the flattening roller 302 and the tension sensing rod 303 are respectively rotatably connected to a bearing seat 304 fixed on the frame 1.

[0033] like Figure 2 and 3 As shown, the unwinding assembly 2 includes an unwinding servo motor 201 with a reducer, a first motor bracket 202, a slider coupling 203, a semi-open bearing seat 204, a rolling bearing 205, a plum head handle screw 206, and an unwinding roller 207. The inner ring of the rolling bearing 205 is installed and fixed to the shaft neck position at both ends of the unwinding roller 207 in an interference fit manner, and the outer ring of the rolling bearing 205 is installed in the mounting hole of the semi-open bearing seat 204 and is locked and fixed by the plum head handle screw 206. The unwinding servo motor 201 is installed and fixed on the first motor bracket 202. The slider coupling 203 includes a convex and a concave half coupling, and the convex and concave half couplings are respectively fixed to the output shaft end of the unwinding servo motor 201 and the power input end of the unwinding roller 207 by key connection. The unwinding assembly 2 is fixed to the frame 1 as a whole through the first motor bracket 202 and the semi-open bearing seat 204 (as shown in FIG. Figure 1 shown).

[0034] like Figure 4 and 5 As shown, the winding assembly 4 includes a slide 401, a hot melt adhesive film winding mechanism 402, a release paper winding mechanism 403, a belt transmission mechanism, and a deviation correction sensor 405 (see Figure 1 ), slide drive mechanism 406, linear guide pair 407. The hot melt adhesive film winding mechanism 402 and the release paper winding mechanism 403 are arranged in parallel and are both fixed on the slide 401, and are connected by a belt transmission mechanism to achieve synchronous winding of the hot melt adhesive film and the release paper. The linear guide pair 407 includes a linear guide 407-1 and a slider 407-2. The linear guide 407-1 and the slider 407-2 are fixed to the frame 1 and the slide 401 respectively by screws. The slide drive mechanism 406 is hinged to the slide 401 through a pin 408 and is fixedly installed at the bottom end of the frame 1 (such as Figure 1 As shown), under the action of the slide drive mechanism 406, the slide 401 can move back and forth quickly along the linear guide rail 407-1.

[0035] like Figure 5 As shown, the hot melt adhesive film winding mechanism 402 includes a winding servo motor 402-1 with a reducer, a second motor bracket 402-2, a slider coupling 203, a semi-open bearing seat 204, a rolling bearing 205, a plum head handle screw 206, and a hot melt adhesive film winding roller 402-4. The active synchronous pulley 402-3 of the belt transmission mechanism is also arranged in the hot melt adhesive film winding mechanism 402. The inner ring of the rolling bearing 205 is installed and fixed on the shaft neck position at both ends of the hot melt adhesive film winding roller 402-4 in an interference fit manner, and the outer ring of the rolling bearing 205 is installed in the mounting hole of the semi-open bearing seat 204 and is locked and fixed by the plum head handle screw 206. The winding servo motor 402-1 is installed and fixed on the second motor bracket 402-2. The active synchronous pulley 402-3 is installed and fixed on the output shaft of the winding servo motor 402-1 by a key. The slider coupling 203 includes a male and female half coupling, which are respectively fixed to the output shaft end of the winding servo motor 402-1 and the power input end of the hot melt adhesive film winding roller 402-4 through key connection. The hot melt adhesive film winding mechanism 402 is fixed to the slide table (such as the second motor bracket 402-2 and the semi-open bearing seat 204) as a whole. Figure 4 shown).

[0036] like Figure 5As shown, the release paper winding mechanism 403 includes an intermediate shaft 403-2, a shaft frame 403-3, a slider coupling 203, a semi-open bearing seat 204, a rolling bearing 205, a plum head handle screw 206, and a release paper winding roller 403-4. The driven synchronous pulley 403-1 in the belt transmission mechanism is also arranged in the release paper winding mechanism 40. The inner ring of the rolling bearing 205 is installed and fixed on the shaft neck positions at both ends of the release paper winding roller 403-4 in an interference fit manner, and the outer ring of the rolling bearing 205 is installed in the installation hole of the semi-open bearing seat 204 and is locked and fixed by the plum head handle screw 206. The slider coupling 203 includes a convex and concave half coupling. The intermediate shaft 403-2 is installed in the bearing hole of the shaft frame 403-3. The driven synchronous pulley 403-1 and the male half coupling are fixed to the two ends of the intermediate shaft 403-2 through key connection; the female half coupling is fixed to the power input end of the release paper winding roller 403-4 through key connection. The release paper winding mechanism 403 is fixed to the slide table (such as Figure 4 shown).

[0037] like Figure 5 As shown, the slide drive mechanism 406 includes a servo electric cylinder 406-1 and an electric cylinder bracket 406-2. The servo electric cylinder 406-1 is mounted and fixed on the electric cylinder bracket 406-2, and the rod head of the piston rod of the servo electric cylinder 406-1 is hinged to the slide 401 through a pin 408. The electric cylinder bracket 406-2 is fixed to the bottom end of the frame 1 (such as Figure 1 shown).

[0038] like Figure 4 and 5 As shown, the driving synchronous pulley 402 - 2 and the driven synchronous pulley 403 - 1 are connected by a synchronous belt 404 to achieve synchronous winding of the hot melt adhesive film and the release paper.

[0039] like Figure 1 As shown, the deviation correction sensor 405 is U-shaped, located between the tension sensing roller 303 and the hot melt adhesive film winding roller 402-4, and is fixed to the side end of the frame 1 through a sensor bracket.

[0040] Furthermore, the hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function provided by the utility model also includes a controller (not shown in the figure). The controller is connected with the unwinding servo motor 201, the winding servo motor 402-1, and the tension sensing rod 303 to form a tension automatic control closed loop system to accurately control the tension of the hot melt adhesive film during the winding process. In addition, the controller is also connected with the deviation correction sensor 405 and the servo electric cylinder 406-1 to form an automatic deviation correction control system to accurately control the deviation accuracy of the end face of the hot melt adhesive film during the winding process.

[0041] The working principle of the present invention will be described below by taking the rewinding process of the hot melt adhesive film with release paper as an example.

[0042] First, the hot melt adhesive film with release paper released by the unwinding roller 207 passes through the guide roller 301, the flattening roller 302 and the tension sensing roller 303 in sequence, and then the release paper and the hot melt adhesive film are manually peeled off. Then, the hot melt adhesive film is pulled through the U-shaped groove of the correction sensor 405 and then wound onto the surface of the hot melt adhesive film winding roller 402-4 and fixed; at the same time, the peeled release paper is pulled and wound onto the surface of the release paper winding roller 403-4 and fixed.

[0043] Subsequently, the unwinding servo motor 201 and the winding servo motor 402-1 are started to start the rewinding operation of the hot melt adhesive film. During the rewinding process, the tension sensing roller 303 measures the tension of the hot melt adhesive film in real time and feeds it back to the controller. The controller compares the measured value of the tension with the set value, and automatically adjusts the torque and speed of the unwinding servo motor 201 and the winding servo motor 402-1 according to the error value between the two, thereby ensuring that the hot melt adhesive film is always maintained at a constant tension level during the entire rewinding process to complete the rewinding.

[0044] If during the rewinding process, due to random factors in the production process (such as machine vibration, etc.), the hot melt adhesive film coil is misaligned during the winding process (misalignment will cause the end surface of the coil to be uneven), the correction sensor 405 can quickly detect the deviation of the hot melt adhesive film and transmit the deviation signal to the controller. The controller controls the servo electric cylinder 406-1 according to the size and direction of the deviation. The servo electric cylinder 406-1 will drive the slide 401 to move slightly, correct the deviation in time to eliminate the deviation error, thereby ensuring that the end surface of the wound hot melt adhesive film coil always remains flat, thereby ensuring the appearance and quality of the product.

[0045] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. Hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function, characterized by: It includes a frame, an unwinding component, a transmission roller group, a winding component, and a controller. The unwinding component, the transmission roller group, and the winding component are arranged on the frame in sequence from front to back; the unwinding component includes an unwinding roller; the transmission roller group includes a guide roller, a flattening roller, and a tension sensing rod that are arranged parallel to each other; the winding component includes a slide, a left and right translation mechanism, a hot melt adhesive film winding mechanism, a release paper winding mechanism, a belt transmission mechanism, and a deviation correction sensor. The hot melt adhesive film winding mechanism includes a hot melt adhesive film winding roller, and the release paper winding mechanism includes a release paper winding roller. Both the hot melt adhesive film winding mechanism and the release paper winding mechanism are installed on the slide, and the slide is installed on the frame through the left and right translation mechanism. The hot melt adhesive film winding roller and the release paper winding roller are rotated synchronously through the belt transmission mechanism; the tension sensing rod is connected to the controller, and the controller controls the rotation speed of the unwinding roller, the hot melt adhesive film winding roller, and the release paper winding roller; the deviation correction sensor is connected to the controller, and the controller controls the operation of the left and right translation mechanism.

2. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 1, characterized in that: The unwinding assembly also includes an unwinding servo motor with a reducer, a first motor bracket, a slider coupling, a semi-open bearing seat, a rolling bearing, and a plum head handle screw; the unwinding roller is installed in the mounting hole of the semi-open bearing seat through the rolling bearing, the plum head handle screw locks the rolling bearing in the mounting hole of the semi-open bearing seat, the semi-open bearing seat is installed on the frame, the unwinding servo motor is fixed to the frame through the first motor bracket, and the slider coupling is arranged between the unwinding servo motor and the unwinding roller.

3. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 1, characterized in that: The hot melt adhesive film winding mechanism also includes a winding servo motor with a reducer, a second motor bracket, a slider coupling, a semi-open bearing seat, a rolling bearing, and a plum head handle screw; the hot melt adhesive film winding roller is installed in the mounting hole of the semi-open bearing seat through the rolling bearing, the plum head handle screw locks the rolling bearing in the mounting hole of the semi-open bearing seat, the semi-open bearing seat is installed on the slide, the winding servo motor is fixed on the slide through the second motor bracket, and the slider coupling is arranged between the winding servo motor and the hot melt adhesive film winding roller.

4. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 1, characterized in that: The release paper winding mechanism also includes an intermediate shaft, an axle frame, a slider coupling, a semi-open bearing seat, a rolling bearing, and a plum head handle screw; the release paper winding roller is installed in the mounting hole of the semi-open bearing seat through the rolling bearing, the plum head handle screw locks the rolling bearing in the mounting hole of the semi-open bearing seat, the semi-open bearing seat is installed on the slide, the intermediate shaft is installed on the slide through the axle frame, the intermediate shaft is connected to the belt transmission mechanism, and the intermediate shaft is connected to the release paper winding roller through the slider coupling.

5. A hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to any one of claims 2 to 4, characterized in that: The slider coupling includes a male and a female half coupling. The end face of one of the cylindrical male and female half couplings is provided with a protrusion arranged along the diameter, and the end face of the other end face is provided with a groove arranged along the diameter. The protrusion is embedded in the groove to realize the connection between the male and female half couplings.

6. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 1, characterized in that: The left and right translation mechanism includes a slide drive mechanism and a linear guide pair; the linear guide pair includes a linear guide rail and a slider, the linear guide rail and the slider are respectively fixed to the frame and the slide by screws, and the slider translates left and right along the linear guide rail; the slide drive mechanism drives the slide to translate.

7. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 6, characterized in that: The slide drive mechanism includes a servo electric cylinder and an electric cylinder bracket; the servo electric cylinder is installed and fixed on the electric cylinder bracket, and the rod head of the piston rod of the servo electric cylinder is hinged to the slide through a pin shaft; the electric cylinder bracket is fixed to the bottom end of the frame by screws.

8. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 1, characterized in that: The belt transmission mechanism comprises an active synchronous pulley, a driven synchronous pulley and a synchronous belt; the active synchronous pulley is arranged in the hot melt adhesive film winding mechanism, and the driven synchronous pulley is arranged in the release paper winding mechanism.

9. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 1, characterized in that: The deviation correction sensor is U-shaped, located between the tension sensing roller and the hot melt adhesive film winding roller, and is fixed to the side end of the frame through a sensor bracket.

10. The hot melt adhesive film rewinding device with precise tension control and automatic deviation correction function according to claim 1, characterized in that: In the transmission roller group, the guide roller, flattening roller and tension sensing rod are arranged in sequence from front to back; there are two flattening rollers, and the heights of the two flattening rollers are consistent; there is one tension sensing rod; the hot melt adhesive film winding roller is located above and behind the tension sensing rod, and the release paper winding roller is located below and behind the tension sensing rod.

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