A plastic film feeding mechanism

Abstract

This utility model relates to the field of plastic film production and processing technology, and discloses a plastic film feeding mechanism, including a support column, an unwinding assembly on the outer wall of the support column, a support plate fixedly connected to the outer wall of the support column, a limit assembly on the inner wall of the support plate, a conveying roller rotatably connected inside the support column, and a lifting assembly on the outer wall of the support column; the lifting assembly includes a lifting plate, the outer wall of the lifting plate being slidably connected to the outer wall of the support column, a threaded rod threadedly connected inside the lifting plate, and a lifting frame slidably connected to the outer wall of the lifting plate. In this utility model, a motor drives the threaded rod to rotate, causing the threaded rod to drive the lifting plate, connecting plate four, and lifting plate two to rise or fall along the guide rod, thereby adjusting the height of the mounting column and allowing the device to adapt to different film roll states.

Description

Technical Field

[0001] This utility model relates to the field of plastic film production and processing technology, and in particular to a plastic film feeding mechanism. Background Technology

[0002] In the field of plastic film production and processing, the plastic film feeding mechanism, as a basic and key piece of equipment, plays an important role in the smoothness of the entire production process and product quality. With the continuous expansion of the application range of plastic products, the demand for plastic film is increasing, and higher requirements are being placed on the accuracy, stability and adaptability of the film feeding process.

[0003] Most existing plastic film feeding mechanisms employ relatively simple mechanical structures. They typically support the film roll with ordinary brackets, rely on manual adjustment of the film's conveying path, and use a basic motor drive to rotate the film roll to achieve feeding. Their technical principle is mainly based on the rotational power transmission of the motor, lacking an effective mechanism to deal with complex situations during film conveying. In terms of adjusting film tension, they often rely solely on simple conveyor wheels, which cannot adjust the position of the conveyor wheels to change the tightness of the film.

[0004] However, there is a prominent problem with the existing technology: due to the limited adaptability of the existing feeding mechanism to film rolls in different states, it is difficult to accurately adjust the film conveying height. As a result, in the actual feeding process, the operator lacks an effective buffer mechanism when adjusting the film tension. If the adjustment is improper, the film is easily torn when the tension is too high. This not only seriously affects the feeding efficiency, but frequent film tearing also increases production costs. At the same time, it also threatens the safety and stability of the equipment, and may even cause equipment failure, affecting the normal operation of the entire production process. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a plastic film feeding mechanism, which aims to improve the existing plastic film feeding mechanism's limited adaptability to film rolls in different states, difficulty in accurately adjusting the conveying height, and lack of an effective buffering mechanism. This results in the film being easily torn due to improper tension adjustment, which in turn affects feeding efficiency, increases costs, and threatens the safety and stability of the equipment and the normal operation of the production process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plastic film feeding mechanism, comprising a support column, an unwinding assembly provided on the outer wall of the support column, a support plate fixedly connected to the outer wall of the support column, a limit assembly provided on the inner wall of the support plate, a conveying roller rotatably connected inside the support column, and a lifting assembly provided on the outer wall of the support column.

[0007] The lifting assembly includes a lifting plate one, the outer wall of which is slidably connected to the outer wall of a support column, a threaded rod threadedly connected to the inner wall of the lifting plate one, a lifting frame two slidably connected to the outer wall of the lifting plate one, a motor two fixedly connected to the upper surface of the lifting frame two, one end of the threaded rod fixedly connected to the output end of the motor two, a connecting plate four fixedly connected to the outer wall of the lifting plate one, a lifting plate two fixedly connected to the outer wall of the connecting plate four, a guide rod slidably connected to the inner wall of the lifting plate two, a lifting frame one slidably connected to the outer wall of the lifting plate two, both ends of the guide rod fixedly connected to the inner wall of the lifting frame one, and an adjustment assembly provided on the upper surface of the lifting plate two.

[0008] Furthermore, the adjustment assembly includes a mounting column, the lower surface of which is fixedly connected to the upper surface of the lifting plate two, a return spring one is provided on the upper surface of the lifting plate two, and a conveying roller three is slidably connected to the outer wall of the mounting column, with one end of the return spring one fixedly connected to the outer wall of the conveying roller three.

[0009] Furthermore, the limiting component includes a connecting block one, the outer wall of the connecting block one is fixedly connected to the outer wall of the support plate, the lower surface of the connecting block one is fixedly connected to an mounting plate, the mounting plate has an internal mounting hole and a limiting plate is slidably connected inside, the limiting plate has a pull rod slidably connected inside, the outer wall of the pull rod is provided with a return spring two, one end of the return spring two is fixedly connected to the outer wall of the limiting plate.

[0010] Furthermore, a second connecting block is fixedly connected to the outer wall of the support column, the outer wall of the second connecting block is fixedly connected to the outer wall of the lifting frame 2, a third connecting block is fixedly connected to the outer wall of the support column, the outer wall of the third connecting block is fixedly connected to the outer wall of the lifting frame 1, a second conveying roller is fixedly connected inside the second connecting block, and the outer wall of the second conveying roller is fixedly connected to the inside of the third connecting block.

[0011] Furthermore, the outer wall of the second lifting plate is slidably connected to the outer wall of the support column.

[0012] Furthermore, a support platform is fixedly connected to the outer wall of the lifting frame, a support frame is fixedly connected to the upper surface of the support platform, a cylinder is fixedly connected to the upper surface of the support frame, and a pressure plate is fixedly connected to the output end of the cylinder.

[0013] Furthermore, the unwinding assembly includes a support block, the outer wall of the support block is fixedly connected to the outer wall of the support column, a rotating shaft is rotatably connected inside the support block, an air shaft is fixedly connected to the outer wall of the rotating shaft, a motor is fixedly connected to the outer wall of the support block, and the outer wall of the rotating shaft is fixedly connected to the output end of the motor.

[0014] Furthermore, a conveying roller is fixedly connected inside the support column.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the screw rod is driven to rotate by the second motor, which in turn drives the first lifting plate, the fourth connecting plate, and the second lifting plate to rise or fall along the guide rod, thereby adjusting the height of the mounting column. This allows the device to adapt to different film roll states. The reset spring 1 set between the mounting column and the second lifting plate and the first lifting plate provides a buffer when the device feeds the plastic film, reducing the occurrence of film tearing caused by excessive tension adjusted by the operator. This improves the feeding efficiency of the device and enhances its safety and stability.

[0017] 2. In this utility model, the pull rod is pulled up by overcoming the elastic force of the second return spring, causing the pull rod to disengage from the mounting hole on the mounting plate. This releases the pull rod from the limiting plate, allowing the limiting plate to slide to a suitable position within the first connecting block. Then, the pull rod is released, allowing it to return to the mounting hole under the elastic action of the second return spring, thus fixing the limiting plate. This allows the mechanism to adjust the width between the limiting plates according to the size of the plastic film, thereby limiting plastic films of different sizes and preventing the plastic film from shifting during feeding, which could lead to reduced production efficiency or even machine damage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a plastic film feeding mechanism proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the cylinder part of a plastic film feeding mechanism proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of a portion of the return spring structure of a plastic film feeding mechanism proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the limiting plate part of a plastic film feeding mechanism proposed in this utility model.

[0022] Legend:

[0023] 1. Support column; 2. Support block; 3. Rotating shaft one; 4. Air shaft; 5. Motor one; 6. Connecting block one; 7. Mounting plate; 8. Conveyor roller one; 9. Connecting block two; 10. Conveyor roller two; 11. Lifting plate one; 12. Return spring one; 13. Conveyor roller three; 14. Support platform; 15. Support frame; 16. Cylinder; 17. Pressure plate; 18. Motor two; 19. Support plate; 20. Lifting frame one; 21. Limiting plate; 22. Connecting block three; 23. Lifting frame two; 24. Lifting plate two; 25. Connecting plate four; 26. Threaded rod; 27. Guide rod; 28. Return spring two; 29. ​​Pull rod; 30. Mounting hole; 31. Mounting column. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-4 An embodiment of this utility model provides a plastic film feeding mechanism, including a support column 1, an unwinding assembly on the outer wall of the support column 1, a support plate 19 fixedly connected to the outer wall of the support column 1, the support plate 19 fixedly connected to the outer wall of the support column 1 provides effective support for the limiting assembly, improving the stability of the device, a limiting assembly on the inner wall of the support plate 19, a conveying roller 8 rotatably connected inside the support column 1, and a lifting assembly on the outer wall of the support column 1;

[0026] The lifting assembly includes a lifting plate 11, the outer wall of which is slidably connected to the outer wall of a support column 1. A threaded rod 26 is threadedly connected to the inside of the lifting plate 11. A lifting frame 23 is slidably connected to the outer wall of the lifting plate 11. A motor 28 is fixedly connected to the upper surface of the lifting frame 23. One end of the threaded rod 26 is fixedly connected to the output end of the motor 28. A connecting plate 4 25 is fixedly connected to the outer wall of the lifting plate 11. A lifting plate 24 is fixedly connected to the outer wall of the connecting plate 4 25. A guide rod 27 is slidably connected to the inside of the lifting plate 24. A lifting frame 20 is slidably connected to the outer wall of the lifting plate 24. Both ends of the guide rod 27 are fixedly connected to the inner wall of the lifting frame 20. The threaded rod 26 is driven to rotate by the motor 28, causing the threaded rod 26 to drive the lifting plate 11, the connecting plate 4 25, and the lifting frame 24. The second lifting plate 24 rises or falls along the guide rod 27, thereby adjusting the height of the mounting column 31 so that the device can adapt to different film roll states. The upper surface of the second lifting plate 24 is provided with an adjustment component; the adjustment component includes the mounting column 31, the lower surface of the mounting column 31 is fixedly connected to the upper surface of the second lifting plate 24, and the upper surface of the second lifting plate 24 is provided with a return spring 12. The outer wall of the mounting column 31 is slidably connected to the conveyor roller 13, and one end of the return spring 12 is fixedly connected to the outer wall of the conveyor roller 13. The return spring 12 provided between the mounting column 31 and the second lifting plate 24 and the first lifting plate 11 provides a buffer for the device when feeding plastic film, so that the device can reduce the occurrence of film tearing caused by excessive tension adjusted by the operator, and improve the feeding efficiency of the device.

[0027] Specifically, by turning on motor 218, the threaded rod 26 is driven to rotate, causing the threaded rod 26 to drive the lifting plate 11, connecting plate 425, and lifting plate 24 to rise or fall along the guide rod 27, thereby adjusting the height of the mounting column 31. This allows the device to adapt to different film roll states. The reset spring 12, installed between the mounting column 31 and the lifting plate 24 and the lifting plate 11, provides a buffer when the device feeds the plastic film, reducing the risk of film tearing due to excessive tension adjusted by the operator. This improves the feeding efficiency of the device and enhances its safety and stability.

[0028] Reference Figure 2 and Figure 4The limiting component includes a connecting block 6, the outer wall of which is fixedly connected to the outer wall of the support plate 19. A mounting plate 7 is fixedly connected to the lower surface of the connecting block 6. A mounting hole 30 is provided inside the mounting plate 7. A limiting plate 21 is slidably connected inside the connecting block 6. The limiting plate 21 limits the plastic film to move stably in the device when it is being fed. A pull rod 29 is slidably connected inside the limiting plate 21. A return spring 28 is provided on the outer wall of the pull rod 29. One end of the return spring 28 is fixedly connected to the outer wall of the limiting plate 21. The elastic force of the return spring 28 makes the pull rod 29 stably installed in the mounting hole 29 when the device is running.

[0029] Specifically, by overcoming the elastic force of the second return spring 28, the pull rod 29 is pulled up, causing the pull rod 29 to disengage from the mounting hole 30 on the mounting plate 7. This releases the pull rod 29 from limiting the limit plate 21, allowing the limit plate 21 to slide to a suitable position within the connecting block 6. Then, the pull rod 29 is released, allowing it to return to the mounting hole 30 under the elastic action of the second return spring 28, thus fixing the limit plate 21. This allows the mechanism to adjust the width between the limit plates 21 according to the size of the plastic film, thereby limiting different sizes of plastic films and preventing the plastic film from shifting during feeding, which could lead to reduced production efficiency or even machine damage.

[0030] Reference Figure 1 and Figure 2 A connecting block 2 9 is fixedly connected to the outer wall of the support column 1. The outer wall of the connecting block 2 9 is fixedly connected to the outer wall of the lifting frame 2 23. A connecting block 3 22 is fixedly connected to the outer wall of the support column 1. The outer wall of the connecting block 3 22 is fixedly connected to the outer wall of the lifting frame 1 20. A conveying roller 2 10 is fixedly connected inside the connecting block 2 9. The outer wall of the conveying roller 2 10 is fixedly connected to the inside of the connecting block 3 22.

[0031] Specifically, by cooperating with the conveyor roller 210 and conveyor roller 313, which are fixedly connected inside the connecting block 32, the tension of the film at different positions is adjusted to ensure that it maintains a suitable and stable tension throughout the feeding process; the outer wall of the lifting plate 24 is slidably connected to the outer wall of the support column 1.

[0032] Reference Figure 1 and Figure 2The outer wall of the lifting frame 10 is fixedly connected to a support platform 14, the upper surface of the support platform 14 is fixedly connected to a support frame 15, the upper surface of the support frame 15 is fixedly connected to a cylinder 16, and the output end of the cylinder 16 is fixedly connected to a pressure plate 17; the unwinding assembly includes a support block 2, the outer wall of the support block 2 is fixedly connected to the outer wall of the support column 1, the inside of the support block 2 is rotatably connected to a rotating shaft 3, the outer wall of the rotating shaft 3 is fixedly connected to an air shaft 4, the outer wall of the support block 2 is fixedly connected to a motor 5, and the outer wall of the rotating shaft 3 is fixedly connected to the output end of the motor 5; the inside of the support column 1 is fixedly connected to a conveying roller 8.

[0033] Specifically, during the cutting of the plastic film, the cylinder 16 drives the pressure plate 17 to press the plastic film, preventing the plastic film from springing back after cutting and causing uneven or even interrupted feeding. By filling the air shaft 4 with gas, the air shaft 4 fixes the raw material, ensuring that the roller wrapped with the plastic film will not shift on the outer wall of the air shaft 4 during feeding, thus preventing uneven feeding of the plastic film. The motor 5 drives the air shaft 4 to rotate the film roll, providing power for feeding. The conveyor roller 8, which is fixedly connected inside the support column 1, initially provides tension to the plastic film.

[0034] Working principle: When the plastic film feeding mechanism is needed, first place the roller wrapped with the plastic film on the outer wall of the air shaft 4. At this time, the operator needs to fill the air shaft 4 with gas to fix the raw material, ensuring that the roller wrapped with the plastic film will not shift on the outer wall of the air shaft 4 during feeding, which would cause uneven feeding of the plastic film. Then, the operator needs to adjust the limit plate 21 according to the size of the plastic film. At this time, the operator needs to overcome the elastic force of the return spring 28 to pull up the pull rod 29. The mechanism disengages from the mounting hole 30 on the mounting plate 7, thereby releasing the limit plate 21 from the pull rod 29. This allows the limit plate 21 to slide within the connecting block 6 to a suitable position. Then, the pull rod 29 is released, returning to the mounting hole 30 under the elastic action of the return spring 28, thus fixing the limit plate 21. This allows the mechanism to adjust the width between the limit plates 21 according to the size of the plastic film, limiting the size of plastic films and preventing the film from shifting during feeding, which could reduce production efficiency or even damage the machine. Turning on motor 218 drives the threaded rod 26 to rotate, which in turn moves the lifting plate 11, connecting plate 425, and lifting plate 24 along the guide rod 27 to rise or fall, thereby adjusting the height of the mounting column 31. This allows the device to adapt to different film roll conditions. A return spring 12, located between the mounting column 31 and the lifting plate 24 and the lifting plate 11, provides a buffer when feeding the plastic film, reducing the risk of damage to the film due to excessive tension adjusted by the operator. The tearing situation improves the feeding efficiency of the device and enhances its safety and stability. Finally, the motor 5 and cylinder 16 are turned on to make the thin roll start to roll and feed. It passes through the conveyor roller 8, conveyor roller 3 13, conveyor roller 2 10, and between conveyor roller 3 13 in sequence, and finally passes under the pressure plate 17. When cutting the plastic film, the cylinder 16 drives the pressure plate 17 to press the plastic film, so as to prevent the plastic film that has not been fed after cutting from rebounding, which would cause uneven feeding or even interruption of feeding.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic film feeding mechanism, comprising a support column (1), characterized in that: The outer wall of the support column (1) is provided with an unwinding assembly, the outer wall of the support column (1) is fixedly connected with a support plate (19), the inner wall of the support plate (19) is provided with a limit assembly, the inside of the support column (1) is rotatably connected with a conveying roller (8), and the outer wall of the support column (1) is provided with a lifting assembly. The lifting assembly includes a lifting plate (11), the outer wall of which is slidably connected to the outer wall of the support column (1), a threaded rod (26) is threadedly connected to the inside of the lifting plate (11), a lifting frame (23) is slidably connected to the outer wall of the lifting plate (11), a motor (18) is fixedly connected to the upper surface of the lifting frame (23), one end of the threaded rod (26) is fixedly connected to the output end of the motor (18), a connecting plate (25) is fixedly connected to the outer wall of the lifting plate (11), a lifting plate (24) is fixedly connected to the outer wall of the connecting plate (25), a guide rod (27) is slidably connected to the inside of the lifting plate (24), a lifting frame (20) is slidably connected to the outer wall of the lifting plate (24), both ends of the guide rod (27) are fixedly connected to the inner wall of the lifting frame (20), and an adjustment assembly is provided on the upper surface of the lifting plate (24).

2. The plastic film feeding mechanism according to claim 1, characterized in that: The adjustment assembly includes a mounting column (31), the lower surface of which is fixedly connected to the upper surface of the lifting plate (24), a return spring (12) is provided on the upper surface of the lifting plate (24), a conveying roller (13) is slidably connected to the outer wall of the mounting column (31), and one end of the return spring (12) is fixedly connected to the outer wall of the conveying roller (13).

3. The plastic film feeding mechanism according to claim 1, characterized in that: The limiting component includes a connecting block (6), the outer wall of which is fixedly connected to the outer wall of the support plate (19), and a mounting plate (7) is fixedly connected to the lower surface of the connecting block (6). The mounting plate (7) has a mounting hole (30) inside. A limiting plate (21) is slidably connected inside the connecting block (6). A pull rod (29) is slidably connected inside the limiting plate (21). A return spring (28) is provided on the outer wall of the pull rod (29). One end of the return spring (28) is fixedly connected to the outer wall of the limiting plate (21).

4. The plastic film feeding mechanism according to claim 1, characterized in that: The outer wall of the support column (1) is fixedly connected to the connecting block 2 (9), the outer wall of the connecting block 2 (9) is fixedly connected to the outer wall of the lifting frame 2 (23), the outer wall of the support column (1) is fixedly connected to the connecting block 3 (22), the outer wall of the connecting block 3 (22) is fixedly connected to the outer wall of the lifting frame 1 (20), the inner wall of the connecting block 2 (9) is fixedly connected to the conveying roller 2 (10), and the outer wall of the conveying roller 2 (10) is fixedly connected to the inner wall of the connecting block 3 (22).

5. The plastic film feeding mechanism according to claim 1, characterized in that: The outer wall of the lifting plate 2 (24) is slidably connected to the outer wall of the support column (1).

6. The plastic film feeding mechanism according to claim 1, characterized in that: A support platform (14) is fixedly connected to the outer wall of the lifting frame (20). A support frame (15) is fixedly connected to the upper surface of the support platform (14). A cylinder (16) is fixedly connected to the upper surface of the support frame (15). A pressure plate (17) is fixedly connected to the output end of the cylinder (16).

7. The plastic film feeding mechanism according to claim 1, characterized in that: The unwinding assembly includes a support block (2), the outer wall of which is fixedly connected to the outer wall of the support column (1), a rotating shaft (3) is rotatably connected inside the support block (2), an air shaft (4) is fixedly connected to the outer wall of the rotating shaft (3), a motor (5) is fixedly connected to the outer wall of the support block (2), and the outer wall of the rotating shaft (3) is fixedly connected to the output end of the motor (5).

8. The plastic film feeding mechanism according to claim 1, characterized in that: The support column (1) has a conveying roller (8) fixedly connected inside.

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