A plastic film stretching cylinder mechanism

Abstract

The utility model discloses a kind of plastic film stretching roller mechanisms, it includes frame, the outer wall of the frame is provided with sliding slot, the sliding slot is slidably connected with moving frame, the moving frame is provided with upper roller assembly, the inside rotation of the frame is connected with screw rod, the screw rod is threadedly connected with moving frame, the inside fixed connection of the frame has first motor, the output of the first motor is fixedly connected with screw rod, the lower end of the frame is provided with lower roller assembly, the upper roller assembly includes guide roller, cooling roller, winding roller and second motor. Through the above structure, through the cooperation of the sliding slot of the frame outer wall, moving frame and screw rod, according to the different requirements of the thickness, material and the like of plastic film, the distance between upper and lower rollers is accurately adjusted, a variety of production scenarios are adapted, and multiple equipment cooperation is not required, production efficiency is improved, and equipment occupied space is saved.

Description

Technical Field

[0001] This utility model relates to the field of plastic film processing technology, specifically to a plastic film stretching roller mechanism. Background Technology

[0002] Plastic film is a thin film material made from polymer materials such as polyethylene, polypropylene, and polyester through processes such as blow molding and casting. It is widely used in packaging, agriculture, electronics, and other fields. By stretching the film, the molecular chains inside the film are aligned along the stretching direction, which significantly improves the film's mechanical properties (such as tensile strength and toughness), transparency, and barrier properties. At the same time, it optimizes dimensional stability, reduces shrinkage and deformation during use, and meets the specific performance requirements of the film in different scenarios.

[0003] However, the existing stretching roller mechanism has a fixed roller spacing, which cannot be quickly and accurately adjusted according to different specifications of plastic film, making it difficult to adapt to diverse production needs. In addition, multiple independent machines are required to complete the heating, stretching, cooling, and winding processes separately. When the plastic film is transferred between machines, problems such as wrinkles and displacement are likely to occur, affecting product quality and increasing equipment investment and floor space. Utility Model Content

[0004] This utility model provides a plastic film stretching roller mechanism that can precisely adjust the distance between the upper and lower rollers according to different requirements such as the thickness and material of the plastic film through the cooperation of the sliding groove on the outer wall of the frame, the moving frame and the screw. It can adapt to various production scenarios and does not require the cooperation of multiple machines, thus improving production efficiency and saving equipment space.

[0005] To achieve the above objectives, a plastic film stretching roller mechanism is provided, including a frame. A groove is provided on the outer wall of the frame, and a movable frame is slidably connected to the groove. An upper roller assembly is mounted on the movable frame. A screw is rotatably connected inside the frame and threadedly connected to the movable frame. A first motor is fixedly connected inside the frame, and its output end is fixedly connected to the screw. A lower roller assembly is located at the lower end of the frame. The groove is used to restrict the movement of the movable frame; the movable frame is used to facilitate the movement of the upper roller assembly; the upper roller assembly is used to facilitate the stretching of the plastic film; the screw is used to facilitate the movement of the movable frame; the first motor is used to drive the screw to rotate; and the lower roller assembly is used to facilitate the stretching of the plastic film.

[0006] According to the aforementioned plastic film stretching roller mechanism, the upper roller assembly includes a guide roller, a cooling roller, a take-up roller, and a second motor, and the movable frame is fixedly connected to a fixing rod. The guide roller is provided to facilitate the movement of the plastic film; the cooling roller is provided to facilitate the cooling of the plastic film; the take-up roller is provided to facilitate the winding of the plastic film; the second motor is provided to facilitate the rotation of the upper roller assembly; and the fixing rod is provided to facilitate the fixing of gears.

[0007] According to the aforementioned plastic film stretching roller mechanism, a first gear is fixedly connected to one end of the guide roller and the cooling roller, and a second gear is rotatably connected to the outer surface of the fixed rod via a bearing. The first gear meshes with the second gear. The first gear is provided to facilitate the rotation of the roller body, and the second gear is provided to facilitate the rotation of the first gear.

[0008] According to the plastic film stretching roller mechanism, the second motor is fixedly connected to the moving frame, and the output end of the second motor is fixedly connected to the guide roller.

[0009] According to the aforementioned plastic film stretching roller mechanism, the guide roller, cooling roller, and take-up roller are rotatably connected to the moving frame.

[0010] According to the aforementioned plastic film stretching roller mechanism, the lower roller assembly includes a heating roller, a stretching roller, a third motor, and a fourth motor, wherein the third motor and the fourth motor are fixedly connected to the frame. The heating roller is provided to facilitate heating the plastic film, the stretching roller is provided to facilitate stretching the plastic film, the third motor is provided to facilitate driving the heating roller to rotate, and the fourth motor is provided to facilitate driving the stretching roller to rotate.

[0011] According to the aforementioned plastic film stretching roller mechanism, the output end of the third motor is fixedly connected to the heating roller, and the output end of the fourth motor is fixedly connected to the stretching roller.

[0012] According to the aforementioned plastic film stretching roller mechanism, the heating roller and the stretching roller are rotatably connected to the frame.

[0013] The beneficial effects of this utility model are as follows: by cooperating with the sliding groove on the outer wall of the frame, the movable frame and the screw, the distance between the upper and lower rollers can be precisely adjusted according to different requirements such as the thickness and material of the plastic film, adapting to various production scenarios, and eliminating the need for multiple machines to cooperate, thereby improving production efficiency and saving equipment space.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a three-dimensional structural diagram of a plastic film stretching roller mechanism according to the present invention;

[0017] Figure 2 This is a front view structural diagram of a plastic film stretching roller mechanism according to the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the frame of a plastic film stretching roller mechanism according to this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the movable frame of a plastic film stretching roller mechanism according to this utility model.

[0020] Legend:

[0021] 1. Frame; 2. Slide rail; 3. Moving frame; 4. Upper roller assembly; 401. Guide roller; 402. Cooling roller; 403. Take-up roller; 404. Second motor; 5. Screw; 6. First motor; 7. Lower roller assembly; 701. Heating roller; 702. Stretching roller; 703. Third motor; 704. Fourth motor; 8. Fixing rod; 9. First gear; 10. Second gear. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figures 1 to 4 This utility model discloses a plastic film stretching roller mechanism, which includes a frame 1. A groove 2 is provided on the outer wall of the frame 1, and a movable frame 3 is slidably connected to the groove 2. The groove 2 provides vertical sliding guidance for the movable frame 3, ensuring that the movable frame 3 does not shift during adjustment and improving structural stability. The movable frame 3 is equipped with an upper roller assembly 4. A screw 5 is rotatably connected inside the frame 1 and threadedly connected to the movable frame 3. A first motor 6 is fixedly connected inside the frame 1, and the output end of the first motor 6 is fixedly connected to the screw 5. A lower roller assembly 7 is provided at the lower end of the frame 1.

[0024] The upper roller assembly 4 includes a guide roller 401, a cooling roller 402, a take-up roller 403, and a second motor 404. A fixed rod 8 is fixedly connected to the movable frame 3. A first gear 9 is fixedly connected to one end of the guide roller 401 and the cooling roller 402. A second gear 10 is rotatably connected to the outer surface of the fixed rod 8 via a bearing to reduce transmission friction. The first gear 9 meshes with the second gear 10. The second motor 404 provides power to the guide roller 401, and through the meshing of the first gear 9 and the second gear 10, drives the cooling roller 402 to rotate synchronously, ensuring that the speeds of the guide roller 401 and the cooling roller 402 are matched, preventing the film material from stretching or loosening due to speed differences.

[0025] The second motor 404 is fixedly connected to the moving frame 3, and the output end of the second motor 404 is fixedly connected to the guide roller 401. The guide roller 401, cooling roller 402, and take-up roller 403 are rotatably connected to the moving frame 3. The guide roller 401 guides the plastic film's transport path by rotation, preventing film offset or wrinkles and ensuring a flat film surface during processing. The cooling roller 402 rapidly cools and shapes the stretched plastic film, fixing the molecular chain orientation structure and improving the film's dimensional stability and mechanical properties. The take-up roller 403 winds the processed plastic film into a roll for easy subsequent storage and transportation.

[0026] The lower roller assembly 7 includes a heating roller 701, a stretching roller 702, a third motor 703, and a fourth motor 704. The heating roller 701 preheats the plastic film, softening it for subsequent stretching. The stretching roller 702 applies a stretching force to the plastic film due to its rotational speed difference, causing the molecular chains to align along the stretching direction, thus improving the film's strength and transparency. The third motor 703 and the fourth motor 704 are fixedly connected to the frame 1. The output end of the third motor 703 is fixedly connected to the heating roller 701, and the output end of the fourth motor 704 is fixedly connected to the stretching roller 702. The heating roller 701 and the stretching roller 702 are rotatably connected to the frame 1. The third motor 703 and the fourth motor 704 control the heating roller 701 and the stretching roller 702 respectively, allowing for flexible adjustment of the speed ratio to meet the process requirements of different stretching ratios.

[0027] Working Principle: During use, based on the material, thickness, and stretching process requirements of the plastic film, the first motor 6 outputs power to drive the screw 5 to rotate, causing the moving frame 3 to rise and fall along the slide 2, adjusting the distance between the upper roller assembly 4 and the lower roller assembly 7 to ensure that the film material can stably pass through each roller. Next, the first motor 6 outputs power to drive the first gear 9 to rotate, meshing with the second gear 10 to rotate, driving the guide roller 401 and cooling roller 402 to rotate. Then, the plastic film is guided by the guide roller 401 to contact the heating roller 701. The third motor 703 drives the heating roller 701 to rotate, heating and softening the film material. The heated film material is then transferred to the guide roller 401, and subsequently enters the stretching roller 702. The fourth motor 704 drives the stretching roller 702 to rotate at a set speed, achieving the stretching process of the film material through the speed difference. Afterward, the film material is shaped by the cooling roller 402. Finally, the winding roller 403 winds up the cooled and shaped film material into a roll.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A plastic film stretching roller mechanism, characterized in that, The machine includes a frame (1), the outer wall of which is provided with a sliding groove (2), a movable frame (3) is slidably connected to the sliding groove (2), the movable frame (3) is provided with an upper roller assembly (4), a screw (5) is rotatably connected inside the frame (1), the screw (5) is threadedly connected to the movable frame (3), a first motor (6) is fixedly connected inside the frame (1), the output end of the first motor (6) is fixedly connected to the screw (5), and a lower roller assembly (7) is provided at the lower end of the frame (1).

2. The plastic film stretching roller mechanism according to claim 1, characterized in that, The upper roller assembly (4) includes a guide roller (401), a cooling roller (402), a take-up roller (403), and a second motor (404). The moving frame (3) is fixedly connected to a fixing rod (8).

3. The plastic film stretching roller mechanism according to claim 2, characterized in that, One end of the guide roller (401) and the cooling roller (402) is fixedly connected to a first gear (9), and the outer surface of the fixed rod (8) is rotatably connected to a second gear (10) through a bearing. The first gear (9) meshes with the second gear (10).

4. A plastic film stretching roller mechanism according to claim 3, characterized in that, The second motor (404) is fixedly connected to the moving frame (3), and the output end of the second motor (404) is fixedly connected to the guide roller (401).

5. A plastic film stretching roller mechanism according to claim 4, characterized in that, The guide roller (401), cooling roller (402) and winding roller (403) are rotatably connected to the moving frame (3).

6. The plastic film stretching roller mechanism according to claim 1, characterized in that, The lower roller assembly (7) includes a heating roller (701), a stretching roller (702), a third motor (703), and a fourth motor (704), wherein the third motor (703) and the fourth motor (704) are fixedly connected to the frame (1).

7. A plastic film stretching roller mechanism according to claim 6, characterized in that, The output end of the third motor (703) is fixedly connected to the heating roller (701), and the output end of the fourth motor (704) is fixedly connected to the stretching roller (702).

8. A plastic film stretching roller mechanism according to claim 7, characterized in that, The heating roller (701) and stretching roller (702) are rotatably connected to the frame (1).

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