Anti-deviation mechanism of plastic film blowing machine

By installing an electric telescopic rod and a drive motor anti-deviation mechanism on the blown film machine, the problem of plastic film deviation during the blown film process is solved, enabling real-time film correction and tension control, thereby improving production efficiency and film quality.

CN223790989UActive Publication Date: 2026-01-13CHIPING ZHETAI PLASTIC IND CO LTD
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Patent Information

Application Number
CN202520409884.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-01-13
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

In existing technologies, plastic films are prone to shifting during the blown film process, resulting in uneven film thickness. Traditional anti-shifting methods rely on manual inspection, which is inefficient and cannot be corrected accurately in real time, making it difficult to meet the needs of modern large-scale high-quality production.

Method used

An anti-deviation mechanism for a plastic film blowing machine is adopted. It uses an electric telescopic rod and a drive motor to drive a threaded rod. Through the U-shaped block compression and adjustment of the pressure roller height, combined with the tension spring and the adjustment of the conveyor roller spacing, the plastic film can be corrected in real time and the tension can be controlled to avoid deviation and breakage.

Benefits of technology

It enables real-time and precise correction and tension control of plastic film, improving film flatness and production efficiency, reducing manual intervention, and lowering production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an anti-deviation mechanism of a plastic film blowing machine, which relates to the technical field of plastic processing equipment and comprises a rack, a first conveying roller and a second conveying roller are arranged on the inner side of the rack, and an air inducing box is fixedly mounted on the surface of the rack. The electric telescopic rod is started to enable the output end of the electric telescopic rod to push the connecting block, the connecting block is in sliding connection with the frame and matched with the guide rod, and then the connecting plate and the U-shaped block are driven to move, so that when the plastic film deviates, the U-shaped block can extrude the side face of the plastic film, the deviation direction of the plastic film is effectively corrected, and the plastic film is prevented from being damaged. The first driving motor drives the first threaded rod to rotate, so that the height position of the second pressure roller can be adjusted, the first pressure roller and the second pressure roller are matched, different pressures can be applied to a plastic film, the pressure is adjusted according to the actual situation of the plastic film, the flatness of the plastic film is improved, and the plastic film is prevented from deviating in an auxiliary mode; the plastic film is prevented from being damaged by overlarge pressure.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic processing equipment especially relates to a plastic film blowing machine's anti -drift mechanism. BACKGROUND

[0002] With the vigorous development of plastic product industry, the demand for plastic film shows a significant growth trend in quantity and quality. Plastic film is widely used in packaging, agriculture, industry and many other fields, and its quality directly affects the performance and market competitiveness of related products. In the plastic film production process, the blowing machine as the core equipment undertakes the key task of converting plastic raw materials into film.

[0003] In the prior art, plastic film is prone to deviation during the blowing process. Once the plastic film deviates, the thickness uniformity of the film is destroyed. In the packaging field, plastic film with uneven thickness may rupture when bearing the weight of packaged articles, which cannot effectively protect the products. Deviated plastic film cannot be neatly wound in the winding process, resulting in loose winding. Not only is the raw material wasted, but additional manpower and time are also required for processing, significantly increasing production costs. Traditional anti-deviation methods mostly rely on regular manual inspection and manual adjustment. This method is extremely inefficient and cannot monitor and correct the deviation of the plastic film in real time and accurately. It is difficult to meet the urgent needs of modern large-scale and high-quality plastic film production. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems in the prior art that traditional anti-deviation methods mostly rely on regular manual inspection and manual adjustment, which is extremely inefficient and cannot monitor and correct the deviation of the plastic film in real time and accurately. A plastic film blowing machine anti-deviation mechanism is provided.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an anti-deviation mechanism for a plastic film blowing machine, comprising a frame, a conveyor roller one and a conveyor roller two provided on the inner side of the frame, an air duct fixedly mounted on the surface of the frame, an air outlet pipe fixedly connected to the output end of the air duct, an air outlet hood provided on the inner side of the frame, a winding frame fixedly mounted on the surface of the frame, a winding roller provided on the inner side of the winding frame, a winding motor fixedly mounted on the side of the winding frame, a frame fixedly mounted on the surface of the frame, a connecting plate slidably connected to the inner side of the frame, and a U-shaped connector fixedly connected to one end of the connecting plate. The frame has a connecting block fixedly connected to the other end of the connecting plate, an electric telescopic rod fixedly installed on the side of the frame, a guide rod fixedly installed inside the frame, a pressure roller one and a pressure roller two inside the frame, a sliding block rotatably connected to one end of the pressure roller two, a threaded rod one rotatably connected inside the frame, a drive motor one fixedly installed on the surface of the frame, a slide rod one fixedly installed inside the frame, a tension spring sleeved on the surface of the slide rod one, an insert block fixedly connected to the lower surface of the frame, a slot opened on the surface of the frame, and a hexagonal bolt threaded into the inside of the frame.

[0006] Preferably, one end of the air outlet pipe is connected to the air inlet of the air outlet hood, and the output end of the winding motor is fixedly connected to one end of the winding roller.

[0007] Preferably, the connecting block is slidably connected to the frame, and the output end of the electric telescopic rod is fixedly connected to the side of the connecting block.

[0008] Preferably, there are two sets of connecting plates, connecting blocks, and U-shaped blocks, and the connecting blocks are slidably connected to the guide rods.

[0009] Preferably, the output end of the drive motor is fixedly connected to one end of the threaded rod, the threaded rod is threadedly connected to the sliding block, and the sliding block is slidably connected to the slide rod.

[0010] Preferably, one end of the tension spring is fixedly connected to the side of the sliding block, and the other end of the tension spring is fixedly connected to the inside of the frame.

[0011] Preferably, the insert block and the slot are slidably connected, and the hexagonal bolt and the slot are threadedly connected.

[0012] Preferably, the two ends of the conveying roller 2 are rotatably connected to moving blocks, the inside of the frame is rotatably connected to a threaded rod 2, the surface of the frame is fixedly mounted with a drive motor 2, and the inside of the frame is fixedly mounted with a slide rod 2.

[0013] Preferably, the output end of the second drive motor is fixedly connected to one end of the second threaded rod, and the second threaded rod is threadedly connected to the moving block.

[0014] Preferably, the movable block is slidably connected to the frame, and the movable block is slidably connected to the slide rod.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, by activating the electric telescopic rod, its output end pushes the connecting block. Since the connecting block is slidably connected to the frame and cooperates with the guide rod, it drives the connecting plate and the U-shaped block to move. When the plastic film deviates, the U-shaped block can squeeze the side of the plastic film, effectively correcting the deviation direction of the plastic film. By driving the first drive motor to drive the first threaded rod to rotate, the height position of the second pressure roller can be adjusted. The first pressure roller and the second pressure roller cooperate to apply different pressures to the plastic film. The pressure can be adjusted according to the actual situation of the plastic film to improve the flatness of the plastic film and help prevent the plastic film from deviating. At the same time, the tension spring can provide a certain buffer to avoid excessive pressure from damaging the plastic film.

[0017] 2. In this utility model, the drive motor 2 drives the threaded rod 2 to rotate, so that the moving block, which is threadedly connected to the threaded rod 2 and slidably connected to the slide rod 2, drives the conveying roller 2 to move. The distance between the conveying roller 1 and the conveying roller 2 can be adjusted, thereby accurately controlling the tension of the plastic film during the conveying process, avoiding problems such as plastic film breakage due to excessive tension or plastic film wrinkles and displacement due to insufficient tension. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of an anti-deviation mechanism for a plastic film blowing machine is provided for this utility model;

[0019] Figure 2 This utility model provides an exploded view of the connecting plate, U-shaped block, and electric telescopic rod of the anti-deviation mechanism for a plastic film blowing machine;

[0020] Figure 3 This utility model provides an exploded view of pressure roller 1, pressure roller 2, and threaded rod 1 of an anti-deviation mechanism for a plastic film blowing machine;

[0021] Figure 4 This utility model proposes an anti-deviation mechanism for a plastic film blowing machine. Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 An exploded view of the frame of an anti-deviation mechanism for a plastic film blowing machine is provided for this utility model.

[0023] Figure 6The present invention provides an exploded view of the conveyor roller 2, threaded rod 2, and slide rod 2 of the anti-deviation mechanism for a plastic film blowing machine.

[0024] Legend: 1. Frame; 2. Conveyor Roller 1; 3. Conveyor Roller 2; 4. Air Box; 5. Air Outlet Pipe; 6. Air Outlet Hood; 7. Rewind Frame; 8. Rewind Roller; 9. Rewind Motor; 10. Frame; 11. Connecting Plate; 12. U-shaped Block; 13. Connecting Block; 14. Electric Telescopic Rod; 15. Guide Rod; 16. Pressure Roller 1; 17. Pressure Roller 2; 18. Sliding Block; 19. Threaded Rod 1; 20. Drive Motor 1; 21. Slide Rod 1; 22. Tension Spring; 23. Insert Block; 24. Slot; 25. Hex Bolt; 26. Moving Block; 27. Threaded Rod 2; 28. Drive Motor 2; 29. ​​Slide Rod 2. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1: As Figures 1-6As shown, this utility model provides a technical solution: an anti-deviation mechanism for a plastic film blowing machine, including a frame 1, with a conveyor roller 2 and a conveyor roller 3 on the inner side of the frame 1, an air box 4 fixedly installed on the surface of the frame 1, an air outlet pipe 5 fixedly connected to the output end of the air box 4, an air outlet hood 6 on the inner side of the frame 1, a winding frame 7 fixedly installed on the surface of the frame 1, a winding roller 8 on the inner side of the winding frame 7, a winding motor 9 fixedly installed on the side of the winding frame 7, a frame 10 fixedly installed on the surface of the frame 1, a connecting plate 11 slidably connected to the inner side of the frame 10, a U-shaped block 12 fixedly connected to one end of the connecting plate 11, a connecting block 13 fixedly connected to the other end of the connecting plate 11, an electric telescopic rod 14 fixedly installed on the side of the frame 10, a guide rod 15 fixedly installed inside the frame 10, a pressure roller 16 and a pressure roller 17 inside the frame 10, a sliding block 18 rotatably connected to one end of the pressure roller 17, and a rotatably connected... The frame 10 has a threaded rod 19, a drive motor 20 fixedly mounted on its surface, a slide rod 21 fixedly mounted inside the frame 10, a tension spring 22 sleeved on the surface of the slide rod 21, an insert block 23 fixedly connected to the lower surface of the frame 10, a slot 24 opened on the surface of the frame 1, and a hexagonal bolt 25 threadedly connected inside the frame 1. One end of the air outlet pipe 5 is connected to the air inlet of the air outlet hood 6. The output end of the take-up motor 9 is fixedly connected to one end of the take-up roller 8. The connecting block 13 is slidably connected to the frame 10. The output end of the electric telescopic rod 14 is fixedly connected to the side of the connecting block 13. There are two sets of connecting plates 11, connecting blocks 13, and U-shaped blocks 12. The connecting block 13 is slidably connected to the guide rod 15. The output end of the drive motor 20 is fixedly connected to one end of the threaded rod 19. The threaded rod 19 is threadedly connected to the slide block 18. The slide block 18 is slidably connected to the slide rod 21. One end of the tension spring 22 is connected to the slide block 18. The side is fixedly connected, the other end of the tension spring 22 is fixedly connected to the inside of the frame 10, the insert 23 is slidably connected to the slot 24, and the hex bolt 25 is threadedly connected to the slot 24.

[0028] In this embodiment, after the plastic film is extruded from the blown film machine, it is initially conveyed by conveyor roller 2 and conveyor roller 3. The airflow generated by the blower box 4 enters the air outlet hood 6 through the air outlet pipe 5, which plays an auxiliary role in shaping and stabilizing the plastic film. During the conveying process, if the plastic film deviates, the electric telescopic rod 14 is activated, and its output end pushes the connecting block 13 to slide along the frame 10. The connecting block 13 drives the connected connecting plate 11 and U-shaped block 12 to move. The two sets of U-shaped blocks 12 squeeze the deviated plastic film from both sides, making it return to the correct position. At the same time, when it is necessary to adjust the pressure of the pressure roller on the plastic film, the drive motor 20 is activated. The screw rod 19 rotates, and the screw rod 19 is threadedly connected to the sliding block 18. With the cooperation of the sliding rod 21 and the tension spring 22, the sliding block 18 drives the pressure roller 17 to move up and down, working in conjunction with the pressure roller 16 to adjust the pressure on the plastic film according to the actual situation, improve the flatness of the plastic film, and further prevent the plastic film from shifting. In addition, the frame 10 is slidably connected to the slot 24 on the frame 1 through the insert 23 and fixed by the hexagonal bolt 25, which facilitates the installation and disassembly of the frame 10 and related components, and facilitates equipment maintenance and repair. The winding motor 9 on the winding frame 7 drives the winding roller 8 to rotate, and winds up the processed plastic film.

[0029] Example 2: As Figures 1-6 As shown, the two ends of the conveyor roller 23 are rotatably connected to the moving blocks 26, the inside of the frame 1 is rotatably connected to the threaded rod 27, the surface of the frame 1 is fixedly mounted with the drive motor 28, the inside of the frame 1 is fixedly mounted with the slide rod 29, the output end of the drive motor 28 is fixedly connected to one end of the threaded rod 27, the threaded rod 27 is threadedly connected to the moving block 26, the moving block 26 is slidably connected to the frame 1, and the moving block 26 is slidably connected to the slide rod 29.

[0030] In this embodiment, when it is necessary to adjust the tension of the plastic film, the second drive motor 28 is started. The second drive motor 28 drives the second threaded rod 27 to rotate. Since the moving block 26 is threadedly connected to the second threaded rod 27, and the moving block 26 is slidably connected to the frame 1 under the guidance of the second slide rod 29, the moving block 26 will move along the direction of the second slide rod 29, thereby driving the second conveyor roller 3 rotatably connected to its two ends to move. By adjusting the distance between the second conveyor roller 3 and the first conveyor roller 2, the tension of the plastic film can be precisely controlled. If the plastic film becomes loose during the conveying process, the second conveyor roller 3 can be moved away from the first conveyor roller 2 to increase the tension of the plastic film. If the tension of the plastic film is too high, the second conveyor roller 3 can be moved closer to the first conveyor roller 2 to reduce the tension. This can effectively avoid problems such as plastic film deviation, wrinkles or cracks caused by improper tension, improve the stability and quality of the plastic film in the blown film process, and ensure the smooth progress of the entire blown film production process.

[0031] The working principle of this embodiment is as follows: When the blown film machine starts working, the plastic film is extruded from the blown film machine and first enters the area between conveyor roller 2 and conveyor roller 3 for conveying. At this time, the air box 4 starts working, and the generated airflow is conveyed to the air hood 6 through the air outlet pipe 5, which plays a role in assisting the shaping and stabilization of the plastic film. During the conveying process, if the plastic film deviates, the electric telescopic rod 14 is activated, and its output end pushes the connecting block 13 to slide along the frame 10. The connecting block 13 drives the connected connecting plate 11 and U-shaped block 12 to move. The two sets of U-shaped blocks 12 move from both sides to support the deviated plastic film. The pressure is applied to return the plastic film to its correct position. Simultaneously, when the pressure of the pressure roller on the plastic film needs adjustment, the drive motor 20 is activated. The drive motor 20 drives the threaded rod 19 to rotate. The threaded rod 19 is threadedly connected to the sliding block 18. With the cooperation of the sliding rod 21 and the tension spring 22, the sliding block 18 drives the pressure roller 17 to move up and down, working in conjunction with the pressure roller 16 to adjust the pressure on the plastic film according to its actual condition, improving the flatness of the plastic film and further preventing film deviation. In addition, the frame 10 slides through the insert block 23 into the slot 24 on the frame 1. The frame 10 and related components are connected by hexagonal bolts 25, facilitating installation and disassembly, and enabling equipment maintenance and repair. The winding motor 9 on the winding frame 7 drives the winding roller 8 to rotate, winding the treated plastic film. When it is necessary to adjust the tension of the plastic film, the drive motor 28 is started, which drives the threaded rod 27 to rotate. Since the moving block 26 is threadedly connected to the threaded rod 27, and the moving block 26 is slidably connected to the frame 1 under the guidance of the slide rod 29, the moving block 26 will move along the direction of the slide rod 29, thereby driving the film to rotate. The conveyor roller 2 3, which is rotatably connected to both ends of the conveyor roller 2, moves. By adjusting the distance between the conveyor roller 2 3 and the conveyor roller 1 2, the tension of the plastic film can be precisely controlled. If the plastic film becomes loose during the conveying process, the conveyor roller 2 3 can be moved away from the conveyor roller 1 2 to increase the tension of the plastic film. If the tension of the plastic film is too high, the conveyor roller 2 3 can be moved closer to the conveyor roller 1 2 to reduce the tension. This can effectively avoid problems such as plastic film deviation, wrinkles or cracks caused by improper tension, improve the stability and quality of the plastic film in the blown film process, and ensure the smooth progress of the entire blown film production process.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An anti-deviation mechanism for a plastic film blowing machine, comprising a frame (1), characterized in that: The inner side of the frame (1) is provided with conveyor roller 1 (2) and conveyor roller 2 (3). The surface of the frame (1) is fixedly installed with an air box (4). The output end of the air box (4) is fixedly connected with an air outlet pipe (5). The inner side of the frame (1) is provided with an air outlet hood (6). The surface of the frame (1) is fixedly installed with a winding frame (7). The inner side of the winding frame (7) is provided with a winding roller (8). The side of the winding frame (7) is fixedly installed with a winding motor (9). The surface of the frame (1) is fixedly installed with a frame (10). The inner side of the frame (10) is slidably connected with a connecting plate (11). One end of the connecting plate (11) is fixedly connected with a U-shaped block (12). The other end of the connecting plate (11) is fixedly connected with a connecting block (13). The frame (10) An electric telescopic rod (14) is fixedly installed on the side of the frame (10). A guide rod (15) is fixedly installed inside the frame (10). A pressure roller (16) and a pressure roller (17) are provided inside the frame (10). A sliding block (18) is rotatably connected to one end of the pressure roller (17). A threaded rod (19) is rotatably connected inside the frame (10). A drive motor (20) is fixedly installed on the surface of the frame (10). A sliding rod (21) is fixedly installed inside the frame (10). A tension spring (22) is sleeved on the surface of the sliding rod (21). An insert (23) is fixedly connected to the lower surface of the frame (10). A slot (24) is opened on the surface of the frame (1). A hexagonal bolt (25) is threadedly connected inside the frame (1).

2. The anti-deviation mechanism of the plastic film blowing machine according to claim 1, characterized in that: One end of the air outlet pipe (5) is connected to the air inlet of the air outlet hood (6), and the output end of the winding motor (9) is fixedly connected to one end of the winding roller (8).

3. The anti-deviation mechanism of the plastic film blowing machine according to claim 1, characterized in that: The connecting block (13) is slidably connected to the frame (10), and the output end of the electric telescopic rod (14) is fixedly connected to the side of the connecting block (13).

4. The anti-deviation mechanism of the plastic film blowing machine according to claim 1, characterized in that: The number of the connecting plate (11), connecting block (13) and U-shaped block (12) is two sets, and the connecting block (13) is slidably connected to the guide rod (15).

5. The anti-deviation mechanism of the plastic film blowing machine according to claim 1, characterized in that: The output end of the drive motor (20) is fixedly connected to one end of the threaded rod (19), the threaded rod (19) is threadedly connected to the sliding block (18), and the sliding block (18) is slidably connected to the sliding rod (21).

6. The anti-deviation mechanism of the plastic film blowing machine according to claim 1, characterized in that: One end of the tension spring (22) is fixedly connected to the side of the sliding block (18), and the other end of the tension spring (22) is fixedly connected to the inside of the frame (10).

7. The anti-deviation mechanism of the plastic film blowing machine according to claim 1, characterized in that: The insert (23) is slidably connected to the slot (24), and the hexagonal bolt (25) is threadedly connected to the slot (24).

8. The anti-deviation mechanism of the plastic film blowing machine according to claim 1, characterized in that: The two ends of the conveying roller (3) are rotatably connected to moving blocks (26), the inside of the frame (1) is rotatably connected to threaded rod (27), the surface of the frame (1) is fixedly installed with drive motor (28), and the inside of the frame (1) is fixedly installed with slide rod (29).

9. The anti-deviation mechanism of the plastic film blowing machine according to claim 8, characterized in that: The output end of the second drive motor (28) is fixedly connected to one end of the second threaded rod (27), and the second threaded rod (27) is threadedly connected to the moving block (26).

10. The anti-deviation mechanism of the plastic film blowing machine according to claim 8, characterized in that: The movable block (26) is slidably connected to the frame (1), and the movable block (26) is slidably connected to the slide bar (29).