A polymer decorative film forming device with a tension self-regulating device

Abstract

The present invention relates to a polymer decorative film forming device with a tension self-regulating device applied in the field of polymer decorative film forming technology, comprising a polymer decorative film forming component and a self-regulating winding device for winding the decorative film, the self-regulating winding device comprising a roller and two fixed side plates, a cylinder diameter measuring mechanism is installed on the fixed side plates, the roller is connected to a driving member, and a winding intelligent controller is installed on the outer wall of the fixed side plate; the cylinder diameter measuring mechanism comprises a measuring shaft and a measuring cylinder, the bottom of the pressure base is installed on bearing 1, the bearing 1 is connected to the measuring shaft, and the pressure base is fixedly connected to spring 1; in the above-mentioned polymer decorative film forming device with tension self-regulating device, the tension change of the polymer decorative film during the winding process is detected by the self-regulating winding device, and the winding rate is automatically controlled to keep the tension within a certain range, thereby reducing the defects of the polymer decorative film and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to a decorative film forming device, in particular to a polymer decorative film forming device with a tension self-regulating device applied in the technical field of polymer decorative film forming. Background Art

[0002] Decorative film is a new type of decorative material made from high molecular polymer (PVC) as raw material, adding various additives, calendering and compounding. It can be compounded with substrates such as wood, plastic boards, aluminum boards, iron boards to make multi-purpose decorative materials. It is widely used in household appliances, audio surface decoration, interior decoration, interior decoration of airplanes, ships, and trains. In addition, it can also be used for billboards, etc.

[0003] The patent with publication number CN219839266U discloses a decorative film production tension adjustment device, which includes a base, wherein both ends of the middle of the upper surface of the base are fixedly installed with positioning plates, the lower end inner wall of the positioning plate is movably connected with an adjusting rod, and the outer wall of the adjusting rod is symmetrically sleeved with a support mechanism; a sleeve plate, wherein the sleeve plate is movably installed on the upper end outer wall of the positioning plate, the upper end of the sleeve plate is fixedly connected with a bracket, and the lower end inner wall of the bracket is installed with an adjusting roller; a handwheel rod, wherein the handwheel rod is movably installed on the upper end inner wall of the bracket, the inner wall of the bracket on the side of the handwheel rod is fixedly connected with a positioning rod, the outer wall of the positioning rod is symmetrically sleeved with a base, and the lower surface of the base is fixedly connected with a limiting sleeve.

[0004] In the above scheme, the decorative film production tension adjustment device is convenient for limiting the decorative film, thereby avoiding displacement of the decorative film when the tension is adjusted, which is beneficial to ensuring stable processing of the decorative film. However, it does not take into account that during the production and molding process of the polymer decorative film, there are certain requirements for the winding tension of the decorative film during the winding stage. Excessive or insufficient winding tension may cause defects in the molding of the decorative film. In order to ensure product quality, the defective decorative film will be cut off, which increases the production cost of the decorative film, reduces efficiency, and causes waste of production resources. Summary of the Invention

[0005] In view of the above-mentioned existing technologies, the technical problem to be solved by the present invention is that during the production and molding process of polymer decorative films, there are certain requirements for the winding tension of the decorative films during the winding stage. Excessive or insufficient winding tension may cause defects in the molding of the decorative film. In order to ensure product quality, the defective decorative film will be cut off, which will increase the production cost of the decorative film, reduce efficiency, and cause waste of production resources.

[0006] To solve the above problems, the present invention provides a polymer decorative film forming device with a self-regulating tension device, comprising a polymer decorative film forming assembly and a self-regulating winding device for winding the decorative film, the self-regulating winding device comprising a fixing mechanism, the fixing mechanism comprising a roller and two fixed side plates mounted at both ends of the roller, the fixed side plates respectively having a through hole 1 along the radial direction thereof and a through hole 2 matching the roller, a cylinder diameter measuring mechanism being slidably connected to the through hole 1, an output end of a driving member being fixedly connected to one end of the roller, a winding intelligent controller being mounted on the outer wall of the fixed side plate, and a torque sensor being provided in the driving member;

[0007] The cylinder diameter measuring mechanism includes a measuring shaft and a measuring cylinder fixedly installed on the measuring shaft. A sliding groove is opened in the through hole 1, and a pressure base is slidably connected in the sliding groove. The bottom of the pressure base is installed on the outer ring of the bearing 1, and the inner ring of the bearing 1 is fixedly connected to the measuring shaft. The top of the pressure base is fixedly connected to the spring 1, and the other end of the spring 1 is fixedly connected to the pressure top plate. The top of the pressure top plate is provided with a pressure sensor.

[0008] In the above-mentioned polymer decorative film forming equipment with a self-regulating tension device, the tension changes generated by the polymer decorative film during the winding process are detected by the self-regulating winding device, and the speed at which the self-regulating winding device winds up the polymer decorative film is automatically adjusted according to the tension changes, so that the tension of the polymer decorative film is always maintained within a constant range, thereby greatly avoiding defects generated during the winding of the polymer decorative film, reducing the parts cut off due to unqualified quality, improving production efficiency, reducing production costs, and reducing resource waste.

[0009] As a further improvement of the present application, the intelligent winding controller includes a main control module, an instruction module, and a detection module. The main control module is electrically connected to the instruction module and the detection module respectively, the instruction module is electrically connected to the driving component, and the detection module is electrically connected to the pressure sensor and the torque sensor respectively.

[0010] As a further improvement of the present application, the roller includes a driving shaft and a winding drum fixedly mounted on the driving shaft, the driving shaft is mounted on the inner ring of bearing two, the outer ring of bearing two is fixedly connected to the inner wall of through hole two, and the driving shaft two is fixedly connected to the output end of the driving member.

[0011] As a further improvement of the present application, the roller and the cylinder diameter measuring mechanism are both arranged along the radial direction of the fixed side plate, the measuring cylinder and the winding cylinder are fitted together, the measuring cylinder is made of elastic material, and the surfaces of the measuring cylinder and the winding cylinder are both smooth.

[0012] As another improvement of the present application, a winding measuring mechanism is provided on the measuring cylinder, which includes a pneumatic rod installed on the outer wall of the measuring cylinder, the input end of the pneumatic rod is fixedly connected to the winding cylinder, and a spring 2 is sleeved on the input end of the pneumatic rod.

[0013] As another improved supplement of the present application, a plurality of winding measuring mechanisms are provided, and the plurality of winding measuring mechanisms are evenly distributed along the axial direction of the measuring cylinder, and the winding cylinder is made of elastic material.

[0014] As another improved supplement to the present application, multiple pneumatic rods are provided, and the multiple pneumatic rods are distributed circumferentially along the measuring tube. The pneumatic rods include a pneumatic base and a pneumatic input rod plugged into the pneumatic base. The pneumatic base is fixedly installed on the measuring tube, and the pneumatic input rod is fixedly installed on the winding tube. A pneumatic sensor is provided in the pneumatic base, and the detection module is electrically connected to the pneumatic sensor.

[0015] As another improvement of the present application, a regularizing mechanism is provided on each fixed side panel, which is rotatably connected to the driving shaft. The regularizing mechanism includes a regularizing side panel, which is installed on the output end of the electric push rod. The electric push rod is fixedly installed on the fixed side panel. A through hole three corresponding to through hole one is provided on the regular side panel, and through hole three is slidably connected to the measuring shaft. A through hole four corresponding to through hole two is provided on the regular side panel, and through hole four is rotatably connected to the driving shaft. The instruction module is electrically connected to the electric push rod.

[0016] As another improvement of the present application, a plurality of electric push rods are provided, and the plurality of electric push rods are distributed circumferentially along the fixed side plate.

[0017] To summarize, during the winding process of the polymer decorative film, the roll diameter data of the wound polymer decorative film roll and the torque data applied to the roll drum are obtained through the drum diameter measuring mechanism provided on the fixed side plate and the torque sensor provided in the driving component. As the polymer decorative film is wound, the roll diameter of the formed polymer decorative film roll also increases. The measuring drum of the drum diameter measuring mechanism rises as the roll diameter of the polymer decorative film increases. The rise of the measuring drum drives the pressure base to rise synchronously. The rise of the pressure base compresses spring 1, and the pressure sensor provided on the top of the pressure plate also collects the corresponding pressure data. After calculating the pressure data, the roll diameter data of the polymer decorative film roll at this time can be obtained. The roll diameter data and the torque data are transmitted to the winding intelligent controller. The winding intelligent controller calculates the tension information applied to the polymer decorative film at this time, and adjusts the rotation speed of the driving component according to the tension information to maintain the tension applied to the polymer decorative film within a certain range. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the first and second embodiments of the present application;

[0019] Figure 2 This is a schematic structural diagram of the cylinder diameter measuring mechanism of the first and second embodiments of the present application;

[0020] Figure 3Schematic diagram of the drum structure of the first and second embodiments of this application;

[0021] Figure 4 This is a control principle diagram of the winding intelligent controller of the first embodiment of this application;

[0022] Figure 5 Schematic diagram of the position of the winding measurement mechanism of the first and second embodiments of the present application;

[0023] Figure 6 Schematic diagram of the winding measurement mechanism structure of the first and second embodiments of the present application;

[0024] Figure 7 Schematic cross-sectional view of the gas pressure rod structure of the first and second embodiments of the present application;

[0025] Figure 8 This is a schematic diagram of the regular mechanism structure of the first and second embodiments of this application;

[0026] Figure 9 This is a control principle diagram of the winding intelligent controller of the second embodiment of this application.

[0027] Description of the numbers in the figure:

[0028] 1. Fixing mechanism; 101. Fixing side plate; 102. Through hole 1; 103. Through hole 2; 2. Roller; 201. Winding drum; 202. Driving shaft; 203. Bearing 2; 3. Cylinder diameter measuring mechanism; 301. Measuring drum; 302. Measuring shaft; 303. Bearing 1; 304. Pressure base; 305. Spring 1; 306. Pressure top plate; 307. Pressure sensor; 4. Driving part; 5. Winding intelligent controller; 6. Winding measuring mechanism; 601. Winding drum; 602. Pneumatic rod; 603. Spring 2; 604. Pneumatic base; 605. Pneumatic input rod; 606. Pneumatic pressure sensor; 7. Regularizing mechanism; 701. Regularizing side plate; 702. Through hole 3; 703. Through hole 4; 704. Electric push rod. DETAILED DESCRIPTION

[0029] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1-4The invention discloses a polymer decorative film forming device with a self-regulating tension device, including a polymer decorative film forming component and a self-regulating winding device for winding the decorative film. The self-regulating winding device includes a fixing mechanism 1, which includes a roller 2 and two fixed side plates 101 installed at both ends of the roller 2. The fixed side plates 101 are respectively provided with a through hole 102 along the radial direction thereof and a through hole 2 103 matching the roller 2. A cylinder diameter measuring mechanism 3 is slidably connected to the through hole 102. The output end of the driving member 4 is fixedly connected to one end of the roller 2. The roller 2 includes a driving member 4. The driving shaft 202 and the winding drum 201 are fixedly mounted on the driving shaft 202. The driving shaft 202 is mounted on the inner ring of the second bearing 203. The outer ring of the second bearing 203 is fixedly connected to the inner wall of the second through hole 103. The second driving shaft 202 is fixedly connected to the output end of the driving member 4. The driving member 4 drives the driving shaft 202 to rotate, and the driving shaft 202 drives the winding drum 201 to rotate, which is used to wind up the polymer decorative film. The second bearing 203 set on the driving shaft 202 can reduce the wear of the driving shaft 202, reduce the maintenance frequency, and improve production efficiency.

[0032] A winding intelligent controller 5 is installed on the outer wall of the fixed side panel 101. The winding intelligent controller 5 will be used to collect various sensor data, process and judge the data, and then control the corresponding component actions. A torque sensor is provided in the driving member 4. The torque sensor is provided to measure the torque generated by the output end of the driving member 4 and the driving shaft 202 during the winding process of the polymer decorative film. The torque data collected by the torque sensor and the winding diameter data measured by the cylinder diameter measuring mechanism 3 can be calculated to obtain the tension of the polymer decorative film in the current state.

[0033] The polymer decorative film forming assembly hands over the processed polymer decorative film to the self-regulating winding device for winding. The driving part 4 drives the roller 2 to wind the polymer decorative film onto the roller 2. The winding speed of the polymer decorative film is controlled by the driving part 4. The roll diameter of the polymer decorative film gradually increases with the number of turns of the roller 2. The roller 2 and the drum diameter measuring mechanism 3 are both arranged along the radial direction of the fixed side plate 101. The drum diameter measuring mechanism 3 can measure the roll diameter of the polymer decorative film in the current state.

[0034] The cylinder diameter measuring mechanism 3 includes a measuring shaft 302, a measuring cylinder 301 fixedly mounted on the measuring shaft 302, a sliding groove is provided in the through hole 102, a pressure base 304 is slidably connected in the sliding groove, the bottom of the pressure base 304 is mounted on the outer ring of the bearing 1 303, the inner ring of the bearing 1 303 is fixedly connected to the measuring shaft 302, a spring 1 305 is fixedly connected to the top of the pressure base 304, the other end of the spring 1 305 is fixedly connected to the pressure top plate 306, a pressure sensor 307 is provided on the top of the pressure top plate 306, the measuring cylinder 301 is in contact with the winding drum 201, and during the winding process of the polymer decorative film, the measuring cylinder 301 and the winding drum 201 are in contact with each other, and the polymer decorative film will be wound when it is wound. The measuring cylinder 301 is lifted up, and the movement of the measuring cylinder 301 drives the measuring shaft 302 to move. The movement of the measuring shaft 302 drives the bearing 1 303 to move. The movement of the bearing 1 303 drives the pressure base 304 to move along the sliding groove. The pressure base 304 moves to compress the spring 1 305. The elastic force of the spring 1 305 is transmitted to the pressure sensor 307 through the pressure top plate 306. The pressure data generated by the pressure sensor 307 will be processed by the winding intelligent controller 5 and converted into the roll diameter of the polymer decorative film. During the winding process, the measuring cylinder 301 will apply a certain pressure to the wound polymer decorative film. In order to avoid damaging the surface of the polymer decorative film, the measuring cylinder 301 is made of elastic material, and the surfaces of the measuring cylinder 301 and the winding cylinder 201 are both smooth.

[0035] The winding intelligent controller 5 includes a main control module, an instruction module, and a detection module. The main control module is electrically connected to the instruction module and the detection module respectively. The instruction module is electrically connected to the driving component 4. The detection module is electrically connected to the pressure sensor 307 and the torque sensor respectively.

[0036] During the winding process, the polymer decorative film produced by the polymer decorative film forming assembly is fixed to the winding drum 201. The main control module controls the action of the driving component 4 through the instruction module to drive the winding drum 201 to rotate and wind the polymer decorative film onto the winding drum 201. The measuring cylinder 301 will be in close contact with the polymer decorative film. The main control module collects the pressure data of the pressure sensor 307 through the detection module, and compares the pressure data with the pressure curve (the main control module is preset with a pressure curve of corresponding winding diameter data and pressure data) to obtain the winding diameter data in the current state. The main control module collects the torque data of the torque sensor through the detection module, and calculates the torque data with the winding diameter data to obtain the tension data of the polymer decorative film in the current state, and compares the tension data with the specified tension (the main control module is preset with the specified tension in the current state). If the tension data is higher than the specified tension, the winding is too slow. The diameter data cannot be adjusted instantaneously, so the torque data needs to be adjusted. The main control module controls the driver 4 through the instruction module to increase the speed. Under the condition of the same power, the speed is inversely proportional to the torque. The higher the speed, the smaller the torque. After the difference between the tension data and the specified tension is less than a certain error range, the instruction module controls the driver 4 to maintain the current speed to ensure that the tension of the polymer decorative film is within a constant range; if the tension data is lower than the specified tension, the instruction module controls the driver 4 to reduce the speed and increase the tension data. After the difference between the tension data and the specified tension is less than a certain error range, the instruction module controls the driver 4 to maintain the current speed. The tension of the polymer decorative film is maintained within a certain range, so that the wound polymer decorative film has high consistency, fewer defects, and fewer parts that are cut off due to unqualified quality, thereby improving production efficiency, reducing production costs, and reducing resource waste.

[0037] The second implementation method:

[0038] Figure 5-9The shown embodiment shows a polymer decorative film forming device with a tension self-regulating device. Different from the first embodiment, a winding measuring mechanism 6 is added to the measuring cylinder 301. The winding measuring mechanism 6 includes a pneumatic rod 602. The pneumatic rod 602 is installed on the outer wall of the measuring cylinder 301. The input end of the pneumatic rod 602 is fixedly connected to the winding cylinder 601. The winding cylinder 601 is made of elastic material. A spring 2 603 is sleeved on the input end of the pneumatic rod 602. There are multiple pneumatic rods 602. The multiple pneumatic rods 602 are distributed circumferentially along the measuring cylinder 301. The pneumatic rod 602 includes a pneumatic base 604 and a pneumatic input rod 605 plugged into the pneumatic base 604. The pneumatic base 604 is fixedly installed on the measuring cylinder 301, and the pneumatic input rod 605 is fixedly installed on the winding cylinder 601. An air pressure sensor 606 is provided in the air pressure base 604. The detection module is electrically connected to the air pressure sensor 606. During the winding process, the winding measuring mechanism 6 is tightly attached to the cylinder. The rolled polymer decorative film, the measuring cylinder 301 and the polymer decorative film generate a certain pressure on the winding measuring mechanism 6. The elastic material of the winding sleeve deforms under pressure, driving the air pressure rod 602 close to the polymer film to move, and the air pressure input rod 605 moves toward the air pressure base 604, compressing the gas in the air pressure base 604. The movement of the air pressure input rod 605 simultaneously compresses the spring 2 603. The air pressure sensor 606 set in the air pressure base 604 will collect the air pressure data and send it to the detection module, which forwards it to the main control module. As the roller 2 rotates, the winding measuring mechanism 6 is driven to rotate in the opposite direction. At this time, the air pressure rod 602 originally close to the polymer decorative film will gradually move away from the polymer decorative film, the pressure it receives will decrease, and the spring 2 603 will be released, causing the air pressure input rod 605 to gradually return to its original position as it moves away from the polymer decorative film, while the other air pressure rod 602 will move closer to the polymer decorative film as the winding measuring mechanism 6 rotates.

[0039] There are multiple winding measurement mechanisms 6, which are evenly distributed along the axial direction of the measuring cylinder 301. They can detect poor winding that may occur during the winding process. Poor winding causes the rolled polymer decorative film to have side depressions or protrusions. At this time, in order to ensure the consistency of the polymer decorative film, the irregular polymer decorative film is cut off, resulting in material waste. Since the side depressions or protrusions will cause irregularities on the front side of the entire rolled polymer decorative film, multiple winding measurement mechanisms 6 are added to the measuring cylinder 301 to detect the winding condition of the polymer decorative film.

[0040] In addition, a regularizing mechanism 7 is added to each fixed side plate 101, and the regularizing mechanism 7 is rotatably connected to the driving shaft 202. The regularizing mechanism 7 includes a regularizing side plate 701, which is mounted on the output end of the electric push rod 704. The electric push rod 704 is fixedly mounted on the fixed side plate 101. A through hole 3 702 corresponding to the through hole 102 is opened on the regularizing side plate 701. The through hole 3 702 is slidably connected to the measuring shaft 302. The regularizing side plate 701 is opened with a through hole 102 corresponding to the through hole 102. 03 corresponds to the through hole four 703, the through hole four 703 is rotationally connected to the driving shaft 202, the instruction module is electrically connected to the electric push rod 704, and a plurality of electric push rods 704 are provided. The plurality of electric push rods 704 are distributed circumferentially along the fixed side plate 101. When the polymer decorative film in the winding becomes irregular, the electric push rod 704 is controlled to make the regular side plate 701 move toward the center and push back the protruding part of the side, so that the winding condition of the polymer decorative film is more regular, reducing the waste of resources.

[0041] During the winding process, the main control module collects the air pressure data of multiple air pressure sensors 606 through the detection module, and compares the multiple air pressure data with the specified air pressure (the specified air pressure in the current state is preset in the main control module). The difference between the air pressure data and the specified air pressure can be used to obtain the front state of the polymer decorative film in the winding process. When multiple air pressure data are abnormal, the main control module can analyze the specific adverse conditions of the polymer decorative film in the winding process based on the multiple abnormal air pressure data. For example, if multiple air pressure data show that the polymer decorative film in the winding process has side protrusions, the main control module controls the regularity of the side through the instruction module. The electric push rod 704 of the mechanism 7 causes the output end of the electric push rod 704 to drive the regular side edge closer to the side of the polymer decorative film being wound. At the same time, the instruction module controls the speed of the driving component 4 to increase, so that the tension of the polymer decorative film is reduced, which facilitates the regularization of the regular side plate 701. The regularizing side plate 701 pushes the side of the polymer decorative film to push the protruding polymer decorative film back. At this time, the instruction module controls the speed of the driving component 4 to return to the initial value, so that the tension returns to a constant range, and the pushed back polymer decorative film is fixed by friction. At this time, the instruction module controls the electric push rod 704 to make the electric push rod 704 drive the regular side plate 701 back to its original position.

[0042] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A polymer decorative film forming device with a tension self-regulating device, comprising a polymer decorative film forming assembly and a self-regulating winding device for winding the decorative film, characterized in that: The self-regulating winding device comprises a fixing mechanism (1), the fixing mechanism (1) comprises a roller (2) and two fixed side plates (101) installed at both ends of the roller (2), the fixed side plates (101) are respectively provided with a through hole (102) along the radial direction thereof and a through hole (103) matching the roller (2), a cylinder diameter measuring mechanism (3) is slidably connected in the through hole (102), one end of the roller (2) is fixedly connected to the output end of the driving member (4), a winding intelligent controller (5) is installed on the outer wall of the fixed side plate (101), and a torque sensor is provided in the driving member (4); The cylinder diameter measuring mechanism (3) includes a measuring shaft (302), a measuring cylinder (301) fixedly mounted on the measuring shaft (302), a sliding groove is provided in the through hole (102), a pressure base (304) is slidably connected in the sliding groove, the bottom of the pressure base (304) is mounted on the outer ring of the bearing (303), the inner ring of the bearing (303) is fixedly connected to the measuring shaft (302), a spring (305) is fixedly connected to the top of the pressure base (304), the other end of the spring (305) is fixedly connected to the pressure top plate (306), and a pressure sensor (307) is provided at the top of the pressure top plate (306); The winding intelligent controller (5) comprises a main control module, an instruction module, and a detection module, wherein the main control module is electrically connected to the instruction module and the detection module respectively, the instruction module is electrically connected to the driving member (4), and the detection module is electrically connected to the pressure sensor (307) and the torque sensor respectively; The measuring cylinder (301) is provided with a winding measuring mechanism (6), the winding measuring mechanism (6) comprising a pneumatic rod (602), the pneumatic rod (602) being mounted on the outer wall of the measuring cylinder (301), the input end of the pneumatic rod (602) being fixedly connected to the winding cylinder (601), and a spring 2 (603) being sleeved on the input end of the pneumatic rod (602); The winding measuring mechanisms (6) are provided in plurality, and the plurality of winding measuring mechanisms (6) are evenly distributed along the axial direction of the measuring cylinder (301), and the winding cylinder (601) is made of elastic material; There are multiple pneumatic rods (602), and the multiple pneumatic rods (602) are distributed along the circumference of the measuring tube (301). The pneumatic rods (602) include a pneumatic base (604) and a pneumatic input rod (605) plugged into the pneumatic base (604). The pneumatic base (604) is fixedly installed on the measuring tube (301), and the pneumatic input rod (605) is fixedly installed on the winding tube (601). A pneumatic sensor (606) is provided in the pneumatic base (604), and the detection module is electrically connected to the pneumatic sensor (606).

2. The polymer decorative film forming device with a tension self-regulating device according to claim 1, characterized in that: The roller (2) includes a driving shaft (202) and a winding drum (201) fixedly mounted on the driving shaft (202); the driving shaft (202) is mounted on the inner ring of the second bearing (203); the outer ring of the second bearing (203) is fixedly connected to the inner wall of the second through hole (103); and the driving shaft (202) is fixedly connected to the output end of the driving member (4).

3. The polymer decorative film forming device with a tension self-regulating device according to claim 2, characterized in that: The roller (2) and the cylinder diameter measuring mechanism (3) are both arranged along the radial direction of the fixed side plate (101); the measuring cylinder (301) and the winding cylinder (201) are fitted together; the measuring cylinder (301) is made of elastic material; and the surfaces of the measuring cylinder (301) and the winding cylinder (201) are both smooth.

4. The polymer decorative film forming device with a tension self-regulating device according to claim 1, characterized in that: Each of the fixed side plates (101) is provided with a regularizing mechanism (7), the regularizing mechanism (7) is rotatably connected to the driving shaft (202), the regularizing mechanism (7) comprises a regularizing side plate (701), the regularizing side plate (701) is mounted on the output end of the electric push rod (704), the electric push rod (704) is fixedly mounted on the fixed side plate (101), the regularizing side plate (701) is provided with a through hole three (702) corresponding to the through hole one (102), the through hole three (702) is slidably connected to the measuring shaft (302), the regularizing side plate (701) is provided with a through hole four (703) corresponding to the through hole two (103), the through hole four (703) is rotatably connected to the driving shaft (202), and the instruction module is electrically connected to the electric push rod (704).

5. The polymer decorative film forming device with a tension self-regulating device according to claim 4, characterized in that: A plurality of the electric push rods (704) are provided, and the plurality of the electric push rods (704) are distributed circumferentially along the fixed side plate (101).

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