An adjustable thickness polyethylene film blowing machine

Abstract

This utility model discloses an adjustable-thickness polyethylene film blowing machine, belonging to the technical field of film blowing machines. It includes a base, with two evenly distributed support frames connected to the upper left side of the base. An extruder is mounted on the upper end of the support frames, and a stepper motor C is mounted on the left side of the extruder. A spiral discharge rod is connected to the output end of the stepper motor C. A discharge pipe is connected to the end of the extruder away from the stepper motor C, and a spacing adjustment mechanism is located at the end of the extruder near the discharge pipe. The film blowing machine body is mounted on the upper right side of the base, with a through pipe connected to the end of the film blowing machine body near the extruder. A feeding pipe is connected to the upper left side of the extruder, and a crushing pipe is connected to the upper end of the feeding pipe. A storage pipe is connected to the upper end of the crushing pipe, and a crushing component is mounted on the crushing pipe. A controller is located on the upper end of the base. The spacing adjustment mechanism includes a U-shaped plate connected to the extruder. This utility model enables adjustment of the gap size at the outlet of the discharge pipe, meeting the production needs of films with different thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of blown film machine technology, specifically to a polyethylene film blown film machine with adjustable thickness. Background Technology

[0002] Blown film is a plastic processing method that involves heating and melting plastic particles and then blowing them into a thin film. Typically, the polymer is extruded into a tubular preform, which is then blown into the required thickness by high-pressure air under good melt flow conditions. After cooling and shaping, it becomes a thin film. Nowadays, blown film machines are commonly used for blown film processing. Existing technologies have the problem that blown film machines cannot adjust the film thickness during the blowing process, resulting in low practicality and inefficiency when producing films of different thicknesses. To address this, we propose a polyethylene film blown film machine with adjustable thickness. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable-thickness polyethylene film blowing machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable-thickness polyethylene film blowing machine, comprising a base, two evenly distributed support frames connected to the upper left side of the base, an extruder mounted on the upper end of the support frames, a stepper motor C mounted on the left side of the extruder, a spiral discharge rod connected to the output end of the stepper motor C, a discharge pipe connected to the end of the extruder away from the stepper motor C, a spacing adjustment mechanism mounted on the end of the extruder near the discharge pipe, a blowing machine body mounted on the upper right side of the base, a through pipe connected to the end of the blowing machine body near the extruder, and a gap adjustment mechanism mounted on the upper end of the extruder. A feeding pipe is connected to the left side, and a crushing pipe is connected to the upper end of the feeding pipe. A storage pipe is connected to the upper end of the crushing pipe, and a crushing component is installed on the crushing pipe. A controller is installed on the upper end of the base. The spacing adjustment mechanism includes a U-shaped plate connected to the extruder. A stepper motor B is connected to the inner end of the U-shaped plate, and a rotating rod is connected to the output end of the stepper motor B. Two symmetrically arranged threaded grooves are opened on the outer periphery of the rotating rod. Two symmetrically arranged moving plates are threadedly connected to the rotating rod. A spacing adjustment plate is connected to the upper end of each moving plate. A guide post is slidably connected to the moving plate, and the guide post is connected to the U-shaped plate.

[0005] Preferably, the crushing assembly includes a stepper motor A connected to the crushing tube, a rotating shaft A connected to the output end of the stepper motor A, a gear A connected to the rotating shaft A, a gear B meshing with the gear A, a rotating shaft B connected to one end of the gear B near the crushing tube, a crushing roller B connected to the outer periphery of the rotating shaft B, and a crushing roller A connected to the outer periphery of the rotating shaft A.

[0006] Preferably, both shaft A and shaft B are rotatably connected to the crushing tube via bearings.

[0007] Preferably, the lengths of the crushing roller A and the crushing roller B are less than the inner diameter of the crushing tube.

[0008] Preferably, each of the spacing adjustment plates has a guide plate abutting its rear end, and the guide plate is connected to a U-shaped plate.

[0009] Preferably, the rotating rod is rotatably connected to the U-shaped plate via a bearing.

[0010] Preferably, the spacing adjustment plate is positioned to abut against the discharge pipe at one end near the discharge pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This device comprises a base, support frame, extruder, blown film machine body, feeding pipe, crushing pipe, storage pipe, spacing adjustment mechanism, discharge pipe, motor C, spiral discharge rod, through pipe, and controller. It allows for the feeding of film particles into the extruder via the storage pipe, crushing pipe, and feeding pipe. When film thickness adjustment is required, the controller powers a stepper motor B. The output of stepper motor B drives a rotating rod to rotate, which in turn moves the moving plates closer together. These moving plates then move the spacing adjustment plates closer together, causing them to slide against the guide post. As the two symmetrically arranged spacing adjustment plates gradually approach each other, the outlet of the discharge pipe is gradually blocked, reducing the effective outlet area. This invention allows for adjustment of the gap size at the outlet of the discharge pipe, meeting the production needs of films with different thicknesses.

[0012] 2. A crushing component is provided to crush particles arriving at the crushing tube from the storage tube. The controller supplies power to stepper motor A, which in turn drives shaft A to rotate, which in turn drives gear A to rotate. Gear A then drives gear B to rotate, which in turn drives shaft B to rotate. Shaft A drives crushing roller A to rotate forward, while shaft B drives crushing roller B to rotate in reverse. The rotation of crushing rollers A and B crushes the particles, improving the efficiency of subsequent extrusion. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the spacing adjustment mechanism of this utility model; Figure 4 This is a schematic diagram of the crushing component structure of this utility model.

[0014] In the diagram: 1. Base; 2. Support frame; 3. Extruder; 4. Blown film machine body; 5. Feeding pipe; 6. Crushing pipe; 7. Storage pipe; 8. Crushing assembly; 801. Stepper motor A; 802. Rotating shaft A; 803. Gear A; 804. Gear B; 805. Rotating shaft B; 806. Crushing roller A; 807. Crushing roller B; 9. Spacing adjustment mechanism; 901. U-shaped plate; 902. Stepper motor B; 903. Rotating rod; 904. Moving plate; 905. Spacing adjustment plate; 906. Guide column; 907. Guide plate; 10. Discharge pipe; 11. Motor C; 12. Spiral discharge rod; 13. Through pipe; 14. Controller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4This utility model provides a technical solution: an adjustable-thickness polyethylene film blowing machine, including a base 1, two evenly distributed support frames 2 connected to the upper left side of the base 1, an extruder 3 mounted on the upper end of the support frames 2, a stepper motor C11 mounted on the left side of the extruder 3, a spiral discharge rod 12 connected to the output end of the stepper motor C11, a discharge pipe 10 connected to the end of the extruder 3 away from the stepper motor C11, a spacing adjustment mechanism 9 mounted on the end of the extruder 3 near the discharge pipe 10, a blowing machine body 4 mounted on the upper right side of the base 1, a through pipe 13 connected to the end of the blowing machine body 4 near the extruder 3, and a feeding pipe 5 connected to the upper left side of the extruder 3. The upper end is connected to a crushing pipe 6, the upper end of the crushing pipe 6 is connected to a storage pipe 7, the crushing pipe 6 is equipped with a crushing component 8, the upper end of the base 1 is equipped with a controller 14, the spacing adjustment mechanism 9 includes a U-shaped plate 901 connected to the extruder 3, the inner end of the U-shaped plate 901 is connected to a stepper motor B902, the output end of the stepper motor B902 is connected to a rotating rod 903, the outer circumference of the rotating rod 903 has two symmetrically arranged threaded grooves, the rotating rod 903 is threadedly connected to two symmetrically arranged moving plates 904, the upper end of each moving plate 904 is connected to a spacing adjustment plate 905, the moving plate 904 is slidably connected to a guide post 906, and the guide post 906 is connected to the U-shaped plate 901.

[0017] Specifically, the crushing assembly 8 includes a stepper motor A801 ​​connected to the crushing tube 6. The output end of the stepper motor A801 ​​is connected to a rotating shaft A802. The rotating shaft A802 is connected to a gear A803. The gear A803 is meshed with a gear B804. The end of the gear B804 near the crushing tube 6 is connected to a rotating shaft B805. The outer periphery of the rotating shaft B805 is connected to a crushing roller B807. The outer periphery of the rotating shaft A802 is connected to a crushing roller A806. Both the rotating shaft A802 and the rotating shaft B805 are rotatably connected to the crushing tube 6 via bearings. The lengths of the crushing rollers A806 and B807 are less than the inner diameter of the crushing tube 6. The rear end of each spacing adjustment plate 905 abuts against a guide plate 907. The guide plate 907 is connected to a U-shaped plate 901. The rotating rod 903 is rotatably connected to the U-shaped plate 901 via a bearing. The end of the spacing adjustment plate 905 near the discharge pipe 10 is abutted against the discharge pipe 10.

[0018] Working principle: First, the particles arriving at the crushing tube 6 from the storage tube 7 are crushed. The controller 14 supplies power to the stepper motor A801. The output of stepper motor A801 ​​drives the rotating shaft A802 to rotate, which in turn drives the gear A803 to rotate. Gear A803 then drives gear B804 to rotate, which in turn drives the rotating shaft B805 to rotate. The rotating shaft A802 drives the crushing roller A806 to rotate forward, while the rotating shaft B805 drives the crushing roller B807 to rotate in reverse. Next, the film is extruded through the extruder 3. Before extrusion, if the film thickness needs to be adjusted, this... The stepper motor B902 can be powered by the controller 14. The output of the stepper motor B902 drives the rotating rod 903 to rotate, which in turn drives the moving plate 904 to move closer to each other. The moving plate 904 drives the spacing adjustment plate 905 to move closer to each other. At this time, the moving plate 904 and the guide post 906 slide. As the two symmetrically arranged spacing adjustment plates 905 slowly move closer, the outlet of the discharge pipe 10 is gradually blocked, and the effective area of ​​the outlet is reduced. This utility model realizes the adjustment of the gap size of the outlet of the discharge pipe 10, and realizes the production needs of films of different thicknesses.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable-thickness polyethylene film blowing machine, comprising a base (1), characterized in that: The upper left side of the base (1) is connected to two evenly distributed support frames (2). An extruder (3) is installed on the upper end of the support frame (2). A stepper motor C (11) is installed on the left side of the extruder (3). A spiral discharge rod (12) is connected to the output end of the stepper motor C (11). A discharge pipe (10) is connected to the end of the extruder (3) away from the stepper motor C (11). A spacing adjustment mechanism (9) is installed on the end of the extruder (3) near the discharge pipe (10). A blown film machine body (4) is installed on the upper right side of the base (1). A through pipe (13) is connected to the end of the blown film machine body (4) near the extruder (3). A feeding pipe (5) is connected to the upper left side of the extruder (3). A crushing pipe (6) is connected to the upper end of the feeding pipe (5). The end is connected to a storage pipe (7), the crushing pipe (6) is provided with a crushing component (8), the upper end of the base (1) is provided with a controller (14), the spacing adjustment mechanism (9) includes a U-shaped plate (901) connected to the extruder (3), the inner end of the U-shaped plate (901) is connected to a stepper motor B (902), the output end of the stepper motor B (902) is connected to a rotating rod (903), the outer periphery of the rotating rod (903) has two symmetrically arranged threaded grooves, the rotating rod (903) is threadedly connected to two symmetrically arranged moving plates (904), the upper end of each moving plate (904) is connected to a spacing adjustment plate (905), the moving plate (904) is slidably connected to a guide post (906), and the guide post (906) is connected to the U-shaped plate (901).

2. The polyethylene film blowing machine with adjustable thickness according to claim 1, characterized in that: The crushing assembly (8) includes a stepper motor A (801) connected to the crushing tube (6), a rotating shaft A (802) connected to the output end of the stepper motor A (801), a gear A (803) connected to the rotating shaft A (802), a gear B (804) meshing with the gear A (803), a rotating shaft B (805) connected to one end of the gear B (804) near the crushing tube (6), a crushing roller B (807) connected to the outer periphery of the rotating shaft B (805), and a crushing roller A (806) connected to the outer periphery of the rotating shaft A (802).

3. The polyethylene film blowing machine with adjustable thickness according to claim 2, characterized in that: Both the rotating shaft A (802) and the rotating shaft B (805) are rotatably connected to the crushing tube (6) via bearings.

4. The polyethylene film blowing machine with adjustable thickness according to claim 2, characterized in that: The lengths of the crushing rollers A (806) and B (807) are less than the inner diameter of the crushing tube (6).

5. The polyethylene film blowing machine with adjustable thickness according to claim 1, characterized in that: Each of the spacing adjustment plates (905) has a guide plate (907) abutting its rear end, and the guide plate (907) is connected to the U-shaped plate (901).

6. The polyethylene film blowing machine with adjustable thickness according to claim 1, characterized in that: The rotating rod (903) is rotatably connected to the U-shaped plate (901) via a bearing.

7. The polyethylene film blowing machine with adjustable thickness according to claim 1, characterized in that: The spacing adjustment plate (905) is positioned near the discharge pipe (10) and abuts against the discharge pipe (10).

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