Tension adjusting device for thin film winding

Abstract

The utility model discloses a tension adjusting device for thin film winding, and relates to the technical field of thin film winding. The utility model comprises: a mounting rack; the first rotating roller is rotatably mounted between the two sides of the inner wall of the mounting frame, a second rotating roller is rotatably mounted between the two sides of the inner wall of the mounting frame, and a driving assembly used for driving the first rotating roller and the second rotating roller to rotate synchronously is mounted on the mounting frame. The first rotating roller and the second rotating roller are driven by the driving assembly to rotate synchronously, a film is dragged between the first rotating roller and the second rotating roller and transmitted to the position between the two first tension rollers on the U-shaped frame, the tension applied to the film by the first tension rollers can be adjusted through vertical movement of the moving assembly, and therefore the film can be tensioned. The film winding device is suitable for films of different materials and specifications, uniform tension of the films in the winding process is guaranteed, tensile deformation of the films is reduced, the uniformity of the wound films is improved, and therefore the appearance quality of finished products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film winding, in particular to a tension adjusting device for film winding. Background Technique

[0002] There are mainly various methods for producing plastic films, such as blow molding, stretching molding, casting molding, etc. Among them, blow molding is to extrude the molten material plasticized by the barrel of the extruder through a forming die to form a cylindrical film blank, and then blow air with a certain pressure into the cylinder to blow up the cylindrical film blank plastic to reach the required film barrel diameter and thickness. After cooling and shaping, it becomes a film product, and after cutting and winding, it becomes a finished product.

[0003] When the existing winding machine pulls the plastic film, there are problems of non-adjustable and unstable traction force. For example, it is particularly obvious when dealing with films of different materials and sizes. Because of the different required tensions, it often leads to uneven stretching and deformation of different films with the same tension degree, which in turn affects the neatness of the finally wound film and reduces the appearance quality of the finished product. To solve the above-mentioned problems, the utility model provides a tension adjusting device for film winding. Content of the Utility Model

[0004] The purpose of the utility model is to provide a tension adjusting device for film winding to solve the problems mentioned in the above background technique.

[0005] The utility model specifically adopts the following technical solutions to achieve the above purpose: A tension adjusting device for film winding, comprising: a mounting frame; a first rotating roller, the first rotating roller is rotatably installed between the two sides of the inner wall of the mounting frame, a second rotating roller is rotatably installed between the two sides of the inner wall of the mounting frame, and a driving component for driving the first rotating roller and the second rotating roller to rotate synchronously is installed on the mounting frame; a U-shaped frame, the U-shaped frame is slidably installed between the two sides of the inner wall of the mounting frame, and two first tension rollers are rotatably installed symmetrically up and down between the two sides of the inner wall of the U-shaped frame; a moving component, the moving component is installed on the mounting frame and is used to drive the U-shaped frame to move up and down.

[0006] Further, the driving component includes a driving motor fixedly installed on one side of the mounting frame, one end of each of the first rotating roller and the second rotating roller is fixedly installed with a pulley, and the two pulleys are connected by a belt in transmission, and the output end of the driving motor is fixedly connected to one end of the first rotating roller.

[0007] Further, the moving component includes a lifting screw rod rotatably installed on one side of the mounting frame. A rotating motor is fixedly installed on one side of the mounting frame, and the output end of the rotating motor is fixedly connected to one end of the lifting screw rod. A fixing plate is fixedly installed on one side of the U-shaped frame, and the fixing plate is threadedly connected to the lifting screw rod.

[0008] Further, a positioning plate is fixedly installed between the two sides of the inner wall of the mounting frame. Two electric push rods are fixedly installed at the bottom of the positioning plate, and a support frame is fixedly installed between the telescopic ends of the two electric push rods. A second tension roller is rotatably installed between the two sides of the inner wall of the support frame.

[0009] Further, the heights of the two first tension rollers are higher than those of the first rotating roller and the second rotating roller, and the height of the first rotating roller is lower than that of the second rotating roller.

[0010] Further, the outer surfaces of the first rotating roller, the second rotating roller, the first tension roller, and the second tension roller are all smooth surfaces, and the materials are all stainless steel, and they are all hollow rollers.

[0011] The beneficial effects of the present utility model are as follows:

[0012] The present utility model drives the first rotating roller and the second rotating roller to rotate synchronously through the driving component. The film is drawn between the first rotating roller and the second rotating roller and transferred to between the two first tension rollers on the U-shaped frame. By moving the moving component up and down, the tension applied by the first tension roller to the film can be adjusted to adapt to films of different materials and specifications, ensuring uniform tension during the winding process of the film, reducing the stretching deformation of the film, improving the neatness of the wound film, and thus enhancing the appearance quality of the finished product. Description of the Drawings

[0013] Figure 1 is the three-dimensional structure diagram of the present utility model;

[0014] Figure 2 is the Figure 1 three-dimensional structure sectional view of the present utility model;

[0015] Figure 3 is the Figure 1 another three-dimensional structure diagram of the present utility model;

[0016] Figure 4 is the Figure 3 three-dimensional structure sectional view of the present utility model;

[0017] Figure 5 is the Figure 1 front view plane structure sectional view of the present utility model.

[0018] Reference numerals: 1, mounting bracket; 2, first rotating roller; 3, second rotating roller; 4, driving assembly; 41, driving motor; 42, pulley; 5, U-shaped bracket; 6, first tension roller; 7, moving assembly; 71, lifting screw; 72, rotating motor; 73, fixing plate; 8, positioning plate; 9, electric push rod; 10, support frame; 11, second tension roller. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0020] As Figure 1-5 shown, a tension adjusting device for film winding proposed in an embodiment of the present utility model includes: a mounting bracket 1;

[0021] A first rotating roller 2, the first rotating roller 2 is rotatably installed between two sides of the inner wall of the mounting bracket 1, a second rotating roller 3 is rotatably installed between two sides of the inner wall of the mounting bracket 1, and a driving assembly 4 for driving the first rotating roller 2 and the second rotating roller 3 to rotate synchronously is installed on the mounting bracket 1;

[0022] A U-shaped bracket 5, the U-shaped bracket 5 is slidably installed between two sides of the inner wall of the mounting bracket 1, and two first tension rollers 6 are rotatably installed between two sides of the inner wall of the U-shaped bracket 5 in a vertically symmetric distribution;

[0023] A moving assembly 7, the moving assembly 7 is installed on the mounting bracket 1 and is used to drive the U-shaped bracket 5 to move up and down.

[0024] Between the two inner sides of the mounting frame 1, a first rotating roller 2 and a second rotating roller 3 are installed. These two rotating rollers are synchronously driven by a driving assembly 4 installed on the mounting frame 1 to ensure the coordination of rotation. The U-shaped frame 5 is arranged to be able to slide up and down between the two inner sides of the inner wall of the mounting frame 1. Two first tension rollers 6 are symmetrically installed on the upper and lower sides of its inner wall. In order to achieve the adjustment of tension, a moving assembly 7 is also installed on the U-shaped frame 5. This assembly is responsible for driving the U-shaped frame 5 to move in the up and down direction on the inner wall of the mounting frame 1, thereby changing the relative positions between the first tension rollers 6 and the first rotating roller 2 and the second rotating roller 3, and further adjusting the tension of the film during the winding process. By driving the two first tension rollers 6 on the U-shaped frame 5 to move up and down through the moving assembly 7, the film can be pulled up or pressed down according to the actual situation, realizing the adjustment of the tension of the film during the winding process and improving its applicability. When the film needs to be wound, the driving assembly 4 drives the first rotating roller 2 and the second rotating roller 3 to rotate synchronously. The film is pulled between the first rotating roller 2 and the second rotating roller 3 and transmitted to between the two first tension rollers 6 on the U-shaped frame 5. By moving the moving assembly 7 up and down, the tension applied by the first tension rollers 6 to the film can be adjusted to adapt to films of different materials and specifications, ensuring uniform tension of the film during the winding process, reducing the stretching deformation of the film, and improving the neatness of the wound film. As the diameter of the reel increases, the up and down movement of the U-shaped frame 5 can adjust the tension in real time to adapt to the change in the contact angle between the film and the roller, ensuring the stability of the film tension throughout the winding process.

[0025] As Figure 4 shown, in some embodiments, the driving assembly 4 includes a driving motor 41 fixedly installed on one side of the mounting frame 1. One end of each of the first rotating roller 2 and the second rotating roller 3 is fixedly installed with a pulley 42. The two pulleys 42 are connected by a belt in a transmission manner. The output end of the driving motor 41 is fixedly connected to one end of the first rotating roller 2.

[0026] When the driving motor 41 starts and operates, it drives the first rotating roller 2 to rotate, thereby driving the pulley 42 on the first rotating roller 2. It transmits power to the pulley 42 of the second rotating roller 3 through the belt, and then drives the second rotating roller 3 to rotate, realizing the synchronous rotation of the two rotating rollers. This synchronous rotation mechanism ensures that when the film passes through the first rotating roller 2 and the second rotating roller 3, it can be evenly pulled and wound, reducing the problems of film stretching and deformation caused by uneven tension. In addition, the two first tension rollers 6 on the U-shaped frame 5 can dynamically adjust the up and down distances from the first rotating roller 2 and the second rotating roller 3 through the up and down movement of the moving assembly 7, thereby changing the tension applied to the film. This setting allows the operator to adjust the tension in real time according to the specific material and specifications of the film to obtain the best winding effect and ensure that the film remains neat and undamaged throughout the winding process.

[0027] As Figure 1 shown, in some embodiments, the moving component 7 includes a lifting screw rod 71 rotatably mounted on one side of the mounting frame 1. A rotating motor 72 is fixedly installed on one side of the mounting frame 1, and the output end of the rotating motor 72 is fixedly connected to one end of the lifting screw rod 71. A fixing plate 73 is fixedly installed on one side of the U-shaped frame 5, and the fixing plate 73 is threadedly connected to the lifting screw rod 71.

[0028] Start the rotating motor 72 to drive the lifting screw rod 71 to rotate, thereby driving the fixing plate 73 threadedly connected thereto to move up and down, and further driving the U-shaped frame 5 connected to the fixing plate 73 to move up and down, so as to realize the up and down movement of the two first tension rollers 6 to adjust the tension.

[0029] As Figure 5 shown, in some embodiments, a positioning plate 8 is fixedly installed between the two sides of the inner wall of the mounting frame 1. Two electric push rods 9 are fixedly installed at the bottom of the positioning plate 8, and a support frame 10 is fixedly installed between the telescopic ends of the two electric push rods 9. A second tension roller 11 is rotatably installed between the two sides of the inner wall of the support frame 10.

[0030] In the tension adjusting device for film winding, in addition to the components mentioned above, the following parts are also included to enhance its function and adjusting ability. When slightly adjusting the tension of the film, the electric push rod 9 can extend and retract according to the control signal, driving the support frame 10 to move towards the film. As the support frame 10 moves, the position of the second tension roller 11 will also change accordingly, gradually contacting the film, so as to realize the pressing of the second tension roller 11 on the film, and thus the tension of the film when passing through the second tension roller 11 can be adjusted. This setting can more finely control the tension distribution of the film, especially in the case of special tension control, and can ensure the tension uniformity of the film across the entire winding width.

[0031] As Figure 5 shown, in some embodiments, the heights of the two first tension rollers 6 are higher than the heights of the first rotating roller 2 and the second rotating roller 3, and the height of the first rotating roller 2 is lower than the height of the second rotating roller 3.

[0032] When winding the film, there is a height difference among the first tension roller 6, the first rotating roller 2, and the second rotating roller 3, avoiding the situation that they are on the same horizontal plane and affecting the winding of the film.

[0033] As Figure 4 shown, in some embodiments, the outer surfaces of the first rotating roller 2, the second rotating roller 3, the first tension roller 6, and the second tension roller 11 are all smooth surfaces and are all made of stainless steel, and they are all hollow rollers.

[0034] The stainless-steel material can prevent the outer surface from rusting and improve the service life. The smooth outer surface can prevent the film from being punctured. The first rotating roller 2, the second rotating roller 3, the first tension roller 6 and the second tension roller 11 are hollow rollers, which can reduce the gravitational inertia during the rotation of the rollers and adjust the tension during film winding more quickly.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tension adjustment device for film winding, characterized in that: include: Mounting frame (1); a first rotating roller (2), the first rotating roller (2) being rotatably mounted between two sides of the inner wall of the mounting frame (1), a second rotating roller (3) being rotatably mounted between two sides of the inner wall of the mounting frame (1), and a driving component (4) for driving the first rotating roller (2) and the second rotating roller (3) to rotate synchronously being mounted on the mounting frame (1); A U-shaped frame (5), the U-shaped frame (5) is slidably mounted between two sides of the inner wall of the mounting frame (1), and two first tension rollers (6) are rotatably mounted between the two sides of the inner wall of the U-shaped frame (5) in an up-down symmetrical distribution; A moving component (7), the moving component (7) is installed on the mounting frame (1), and is used to drive the U-shaped frame (5) to move up and down.

2. A film winding tension adjustment device according to claim 1, characterized in that: The driving assembly (4) comprises a driving motor (41) fixedly mounted on one side of the mounting frame (1); one end of each of the first rotating roller (2) and the second rotating roller (3) is fixedly mounted with a pulley (42); the two pulleys (42) are connected via a belt transmission; and the output end of the driving motor (41) is fixedly connected to one end of the first rotating roller (2).

3. A film winding tension adjustment device according to claim 1, characterized in that: The moving assembly (7) comprises a lifting screw (71) rotatably mounted on one side of the mounting frame (1); a rotating motor (72) is fixedly mounted on one side of the mounting frame (1); an output end of the rotating motor (72) is fixedly connected to one end of the lifting screw (71); a fixing plate (73) is fixedly mounted on one side of the U-shaped frame (5); and the fixing plate (73) is threadedly connected to the lifting screw (71).

4. A film winding tension adjustment device according to claim 1, characterized in that: A positioning plate (8) is fixedly installed between the two sides of the inner wall of the mounting frame (1), two electric push rods (9) are fixedly installed at the bottom of the positioning plate (8), a support frame (10) is fixedly installed between the telescopic ends of the two electric push rods (9), and a second tension roller (11) is rotatably installed between the two sides of the inner wall of the support frame (10).

5. The film winding tension adjusting device according to claim 1, characterized in that: The heights of the two first tension rollers (6) are higher than the heights of the first rotating roller (2) and the second rotating roller (3), and the height of the first rotating roller (2) is lower than the height of the second rotating roller (3).

6. A film winding tension adjustment device according to claim 4, characterized in that: The outer surfaces of the first rotating roller (2), the second rotating roller (3), the first tension roller (6) and the second tension roller (11) are all smooth surfaces and made of stainless steel, and they are all hollow rollers.

Images