Film tensioning device for biaxially oriented film production equipment

Abstract

The utility model discloses a film tensioning device for biaxially oriented film production equipment, which relates to the technical field of tensioning and comprises a tensioning mechanism fixedly mounted on the inner side of a supporting mechanism, the tensioning mechanism comprises a connecting shaft, a rotating block is detachably connected to the inner side of the connecting shaft, and a connecting rod is fixedly connected to the bottom of the rotating block. The connecting rod is sleeved with the pressing cylinder, the combined design of the pressing cylinder and the connecting rod can effectively control the tension degree of a film in the production process, the smoothness of the film in the two-way stretching process is ensured, the whole tensioning mechanism is compact in structure, the production efficiency and the product quality are improved, and the production cost is reduced. The three fixing cylinders are fixedly installed on the inner side of the connecting frame, the handle is fixedly connected to the outer side of the connecting frame, extra supporting and positioning can be provided in the film winding process, and an operator can easily adjust the position of the fixing mechanism through manual rotation by means of the handle.

Description

Technical Field

[0001] The utility model relates to the field of tensioning, in particular to a film tensioning device for a biaxially stretched film production device. Background Technique

[0002] A biaxially stretched film is a plastic film with a laminated structure, which is characterized in that it can be stretched in both the longitudinal and transverse directions to obtain better physical properties. This film is usually made by co-extruding polypropylene particles into a sheet and then stretching it in both the longitudinal and transverse directions. The biaxial stretching process makes the film have good physical stability, mechanical strength, airtightness, as well as high transparency and gloss. Due to its excellent physical properties, the biaxially stretched film is widely used in the printing and packaging field. For example, as the outer layer of a composite film, after being compounded with a polyethylene film, it can provide a packaging material with ideal moisture resistance, transparency, strength, stiffness and printability.

[0003] At present, there are some problems in the actual use of patents for biaxial film tensioning. An air dryer, a motor and a searchlight are installed on the tensioning device for observation. In this process, a lot of electric power support is required and workers need to work beside, thus wasting a large amount of energy and labor. Therefore, we propose a film tensioning device for a biaxially stretched film production device to solve the above problems. Content of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a film tensioning device for a biaxially stretched film production device to solve the problems of saving energy and labor when the device is working.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A film tensioning device for a biaxially stretched film production device, including a support mechanism, and a tensioning mechanism is fixedly installed inside the support mechanism;

[0006] The tensioning mechanism includes a connecting shaft, a rotating block is detachably connected inside the connecting shaft, a connecting rod is fixedly connected to the bottom of the rotating block, and a pressing cylinder is sleeved outside the connecting rod.

[0007] By adopting the above technical scheme, the rotating block and the connecting shaft are used in combination, which not only simplifies the maintenance process of the device, but also improves the overall flexibility and reliability. The combined design of the pressing cylinder and the connecting rod can effectively control the tension of the film during the production process, ensuring the flatness and stability of the film during the biaxial stretching process. The structure of the entire tensioning mechanism is compact and the operation is simple, which is beneficial to improving production efficiency and product quality.

[0008] Further, the support mechanism includes a first support plate and a second support plate.

[0009] By adopting the above technical solution, the first support plate and the second support plate cooperate with each other, which can provide good support stability for the conveying mechanism and the tensioning mechanism.

[0010] Furthermore, a conveying mechanism is provided inside the support mechanism. The conveying mechanism includes a first conveying cylinder. A second conveying cylinder is provided below the first conveying cylinder, and a third conveying cylinder is provided on one side of the second conveying cylinder.

[0011] By adopting the above technical solution, the first conveying cylinder provides preliminary conveying and support for the film, and is responsible for further conveying the film to the next processing stage. The second conveying cylinder ensures the smooth transmission and uniform tensioning of the film during the production process, thereby improving the production efficiency and the quality of the film.

[0012] Furthermore, rotating shafts are provided inside the first conveying cylinder, the second conveying cylinder and the third conveying cylinder. The inner sides of the first support plate and the second support plate are connected to both sides of the rotating shaft. The transmission shaft inside the third conveying cylinder passes through the first support plate and is connected to a motor.

[0013] By adopting the above technical solution, the connection between the rotating shaft and the support plate can ensure the stability and continuity of the film during the conveying process. The transmission shaft inside the third conveying cylinder passes through the first support plate and is connected to the motor, which ensures the effective transmission of power. At the same time, the conveying speed and tension state of the film can be precisely controlled through the motor.

[0014] Furthermore, a fixing mechanism is provided on the third conveying cylinder. The fixing mechanism includes two connecting frames. Three fixing cylinders are fixedly installed inside the connecting frames, and handles are fixedly connected to the outer sides of the connecting frames.

[0015] By adopting the above technical solution, additional support and positioning can be provided during the winding process of the film, ensuring the neatness and stability of the film during winding. The handles enable the operator to easily adjust the position of the fixing mechanism by manual rotation.

[0016] Furthermore, the connecting frames are placed on the first support plate and the second support plate.

[0017] By adopting the above technical solution, the fixing mechanism is made more stable, and at the same time, it is also convenient for the operator to adjust the position according to actual needs.

[0018] Furthermore, a scroll spring is provided inside the rotating block.

[0019] By adopting the above technical solution, small changes in the film during the tensioning process can be automatically compensated, keeping the film tension in a relatively constant state, and further improving the flatness and production quality of the film.

[0020] In summary, the main beneficial effects of the present utility model are as follows:

[0021] 1. The film tensioning device for the biaxially stretched film production equipment of the present utility model is detachably connected with a rotating block inside the connecting shaft. The bottom of the rotating block is fixedly connected with a connecting rod, and a pressing cylinder is sleeved outside the connecting rod. The rotating block and the connecting shaft are used in cooperation, which not only simplifies the maintenance process of the device, but also improves the overall flexibility and reliability. The combined design of the pressing cylinder and the connecting rod can effectively control the tension of the film during production, ensuring the flatness and stability of the film during biaxial stretching. The structure of the entire tensioning mechanism is compact and the operation is simple, which is beneficial to improving production efficiency and product quality. There is a fixing mechanism on the third transmission cylinder. The fixing mechanism includes two connecting frames. Three fixing cylinders are fixedly installed inside the connecting frames, and a handle is fixedly connected to the outside of the connecting frames, which can provide additional support and positioning during the winding process of the film, ensuring the neatness and stability of the film during winding. The handle enables the operator to easily adjust the position of the fixing mechanism by manually rotating.

[0022] 2. In the present utility model, a second transmission cylinder is provided below the first transmission cylinder, and a third transmission cylinder is provided on one side of the second transmission cylinder. Rotating shafts are provided inside the first transmission cylinder, the second transmission cylinder, and the third transmission cylinder. The inner sides of the first support plate and the second support plate are connected to both sides of the rotating shaft. The transmission shaft in the third transmission cylinder passes through the first support plate and is connected to a motor. The first transmission cylinder provides preliminary conveying and support for the film, and is responsible for further conveying the film to the next processing stage. The second transmission cylinder ensures the smooth transmission and uniform tension of the film during production, thereby improving production efficiency and film quality. The connection between the rotating shaft and the support plate can ensure the stability and continuity of the film during transmission. The transmission shaft in the third transmission cylinder passes through the first support plate and is connected to the motor, which ensures the effective transmission of power. At the same time, the transmission speed and tension state of the film can be precisely controlled through the motor. Description of the Drawings

[0023] Figure 1 It is the front view of the overall mechanism of the present utility model;

[0024] Figure 2 It is the schematic diagram of the overall mechanism of the present utility model;

[0025] Figure 3 It is the side view of the overall mechanism of the present utility model;

[0026] Figure 4 It is the schematic diagram of the tensioning mechanism of the present utility model.

[0027] In the figure: 1. Support mechanism; 101. First support plate; 102. Second support plate; 2. Conveying mechanism; 201. First conveying cylinder; 202. Second conveying cylinder; 203. Third conveying cylinder; 3. Tensioning mechanism; 301. Connecting shaft; 302. Rotating block; 303. Connecting rod; 304. Pressing cylinder; 4. Fixing mechanism; 401. Connecting frame; 402. Fixing cylinder; 403. Handle. Detailed implementation mode

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] The following will describe the embodiments according to the overall mechanism of the present invention. Embodiment 1:

[0032] The film tensioning device for a biaxially stretched film production device includes that the tensioning mechanism 3 includes a connecting shaft 301. A rotating block 302 is detachably connected to the inner side of the connecting shaft 301. A connecting rod 303 is fixedly connected to the bottom of the rotating block 302. A pressing cylinder 304 is sleeved outside the connecting rod 303. The cooperation of the rotating block and the connecting shaft not only simplifies the maintenance process of the device, but also improves the overall flexibility and reliability. The combined design of the pressing cylinder and the connecting rod can effectively control the tension of the film during production, ensuring the flatness and stability of the film during biaxial stretching. The structure of the entire tensioning mechanism is compact and the operation is simple, which is beneficial to improving production efficiency and product quality.

[0033] See also Figure 2 The support mechanism 1 includes a first support plate 101 and a second support plate 102. The first support plate and the second support plate cooperate with each other to provide good support stability for the transmission mechanism and the tensioning mechanism.

[0034] See also Figure 2 A conveying mechanism 2 is provided in the supporting mechanism 1, and the conveying mechanism 2 includes a first conveying cylinder 201, a second conveying cylinder 202 is provided below the first conveying cylinder 201, and a third conveying cylinder 203 is provided on one side of the second conveying cylinder 202. The first conveying cylinder provides preliminary conveying and support for the film and is responsible for further conveying the film to the next processing stage. The second conveying cylinder ensures smooth transmission and uniform tensioning of the film during the production process, thereby improving production efficiency and film quality.

[0035] See also Figure 2 A rotating shaft is provided in the first conveying cylinder 201, the second conveying cylinder 202 and the third conveying cylinder 203. The inner sides of the first support plate 101 and the second support plate 102 are connected to both sides of the rotating shaft. The transmission shaft in the third conveying cylinder 203 passes through the first support plate 101 and is connected to a motor. The connection between the rotating shaft and the support plate can ensure the stability and continuity of the film during the conveying process. The transmission shaft in the third conveying cylinder passes through the first support plate 101 and is connected to the motor, which ensures the effective transmission of power. At the same time, the conveying speed and tension state of the film can be accurately controlled by the motor. Embodiment 2:

[0036] Film tensioning devices for biaxially oriented film production equipment, such as Figures 1 to 4 As shown, a fixing mechanism 4 is provided on the third conveying cylinder 203, and the fixing mechanism 4 includes two connecting frames 401, three fixing cylinders 402 are fixedly installed on the inner side of the connecting frame 401, and a handle 403 is fixedly connected to the outer side of the connecting frame 401, which can provide additional support and positioning during the winding process of the film to ensure the neatness and stability of the film during winding, and the handle 403 allows the operator to easily adjust the position of the fixing mechanism by manual rotation.

[0037] See also Figure 3 The connecting frame 401 is placed on the first supporting plate 101 and the second supporting plate 102, so that the fixing mechanism is more stable and it is also convenient for the operator to adjust the position according to actual needs.

[0038] See also Figure 4 A reel spring is provided inside the rotating block 302, which can automatically compensate for slight changes in the film during the tensioning process, so that the film tension is maintained in a relatively constant state, further improving the flatness of the film and the production quality.

[0039] The implementation principle of this embodiment is as follows: First, the staff passes the biaxial film upward from the bottom of the second transfer cylinder 202 through the first transfer cylinder 201, and then downward along the first transfer cylinder 201 through the bottom of the pressing cylinder 304. Then, it passes through the middle of the fixing mechanism 4 and the third transfer cylinder 203. By adjusting the angles of the rotating block 302 and the connecting rod 303, the tension of the biaxially stretched film is adjusted. The motor is turned on for transmission. When the film is too tight, the tensioning mechanism 3 rotates along the film transmission direction. When the film is too loose, the reset performance of the shaft spring in the rotating block 302 is used to reversely reset the connecting rod 303 and the pressing cylinder 304 to ensure the tension of the film. During this process, by turning the handle 403, the film transmission on the third transfer cylinder 203 can be finally evenly tensioned.

[0040] Although the embodiments of the present invention have been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, mechanisms, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not contribute creatively to the embodiments according to their needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A film tensioning device for a biaxially oriented film production device, characterized in that: It comprises a support mechanism (1), wherein a tensioning mechanism (3) is fixedly mounted inside the support mechanism (1); The tensioning mechanism (3) comprises a connecting shaft (301), the inner side of the connecting shaft (301) is detachably connected to a rotating block (302), the bottom of the rotating block (302) is fixedly connected to a connecting rod (303), and the outer side of the connecting rod (303) is sleeved with a pressing cylinder (304).

2. The film tensioning device for biaxially oriented film production equipment according to claim 1, characterized in that: The support mechanism (1) comprises a first support plate (101) and a second support plate (102).

3. The film tensioning device for biaxially oriented film production equipment according to claim 2, characterized in that: A conveying mechanism (2) is provided inside the support mechanism (1), and the conveying mechanism (2) comprises a first conveying cylinder (201), a second conveying cylinder (202) is provided below the first conveying cylinder (201), and a third conveying cylinder (203) is provided on one side of the second conveying cylinder (202).

4. The film tensioning device for biaxially oriented film production equipment according to claim 3, characterized in that: A rotating shaft is provided in each of the first conveying cylinder (201), the second conveying cylinder (202) and the third conveying cylinder (203); the inner sides of the first support plate (101) and the second support plate (102) are connected to both sides of the rotating shaft; and a transmission shaft in the third conveying cylinder (203) passes through the first support plate (101) and is connected to a motor.

5. The film tensioning device for biaxially oriented film production equipment according to claim 4, characterized in that: The third transmission cylinder (203) is provided with a fixing mechanism (4), the fixing mechanism (4) comprising two connecting frames (401), three fixing cylinders (402) being fixedly mounted on the inner side of the connecting frames (401), and a handle (403) being fixedly connected to the outer side of the connecting frames (401).

6. The film tensioning device for biaxially oriented film production equipment according to claim 5, characterized in that: The connecting frame (401) is placed on the first supporting plate (101) and the second supporting plate (102).

7. The film tensioning device for biaxially oriented film production equipment according to claim 1, characterized in that: A reel spring is provided inside the rotating block (302).

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