A blown film machine winding device

Abstract

This application relates to a blown film machine winding device, specifically in the field of plastic film manufacturing. It includes a support frame with side housings on opposite sides. The support frame contains a limiting roller and a flattening roller. By incorporating a second electric push rod, the angle of the rotating support plate can be adjusted by telescopic movement, driving the connecting box and connecting rod to rotate as a whole. A dual-axis motor drives the threaded rods on both sides to rotate synchronously, causing the threaded cylinder to move horizontally along the threaded rods. This moves the movable plate along the through hole, allowing precise adjustment of the distance between the two limiting auxiliary plates. This ensures the film remains centered and aligned during winding, preventing wrinkles or misalignment at the film edges. The combined use of the limiting roller and flattening roller provides preliminary flattening and guiding treatment before the film enters the winding stage, improving winding quality.

Description

Technical Field

[0001] This application relates to plastic film manufacturing, and more particularly to a blown film machine winding device. Background Technology

[0002] Existing blown film machine winding devices generally include a guide roller rotatably connected to the frame, a flattening roller rotatably connected to the frame, and a winding shaft mounted on the frame. One end of the flattening roller is connected to the drive mechanism. The outermost layer of the film wound around the guide roller and the winding shaft respectively abuts against the flattening roller. The blown film formed by the blown film machine passes through the guide roller and the flattening roller in sequence, and is finally wound onto the winding shaft.

[0003] A current patent (publication number: CN210026285U) discloses a blown film machine winding device and a plastic film roll production system, including a mounting frame, an adjustment mechanism, and a winding shaft. Both the adjustment mechanism and the winding shaft are mounted on the mounting frame and are rotatably connected to it. The film passes sequentially through the adjustment mechanism and the winding shaft. The adjustment mechanism increases the length of the film's travel path between the blown film machine outlet and the winding shaft to tension the film. Because the adjustment mechanism is located on the mounting frame, when the radius of the film roll on the winding shaft increases, the film between the blown film machine outlet and the winding shaft becomes loose. At this time, the adjustment mechanism rotates relative to the mounting frame, thereby increasing the length of the film's travel path between the blown film machine outlet and the winding shaft to tension the film. This avoids the problem of wrinkles and unevenness in the film wound onto the winding shaft.

[0004] While the device in the aforementioned comparative document solves the problem of wrinkles and unevenness in films wound onto the take-up roller, it lacks an anti-deviation function. During the winding process, the film's position is prone to shift, resulting in uneven edges on the wound film roll. This not only reduces the appearance quality of the film roll but may also cause stretching deformation or even breakage due to uneven local tension. To address these issues, a blown film machine winding device is proposed. Utility Model Content

[0005] The purpose of this application is to provide a blown film machine winding device with advantages such as anti-deviation function, which solves the problems in the prior art where the film is easily deviated during the winding process, resulting in uneven film roll edges, reduced appearance quality, and film stretching deformation or even damage caused by uneven local tension.

[0006] The blowing film machine winding device provided in this application adopts the following technical solution: it includes a support frame, and the support frame is provided with side shells on both sides. The support frame is provided with a limit roller and a flattening roller inside.

[0007] The support frame has two opposite sides connected by pins to a second electric push rod. A rotating rod is installed inside the support frame, and two rotating support plates are rotatably connected to the surface of the rotating rod. One end of the second electric push rod is movably connected to the side of the rotating support plate by a pin. A connecting rod and a connecting box are fixedly connected between the two rotating support plates. The connecting box is located at the bottom of the connecting rod. Two through holes are opened at the top of the connecting box. A dual-axis motor is fixedly connected inside the connecting box. A threaded rod is fixedly connected to the output end of the dual-axis motor. A threaded cylinder is threadedly connected to the surface of the threaded rod. A movable plate is fixedly connected to the surface of the threaded cylinder. The movable plate is slidably connected within the through holes. A limit auxiliary plate is fixedly connected to the top of the movable plate.

[0008] By adopting the above technical solution and setting a second electric push rod, the angle of the rotating support plate can be adjusted by telescopic adjustment, which can drive the connecting box and connecting rod to rotate as a whole. By setting a dual-axis motor, the operation of the dual-axis motor can drive the threaded rods on both sides to rotate synchronously, so that the threaded cylinder moves horizontally on the threaded rods, driving the movable plate to slide along the through hole, thereby allowing the distance between the two limiting auxiliary plates to be precisely adjusted. This can ensure that the film remains centered and aligned during the winding process, and can prevent wrinkles or deviations from the film edges. Through the coordinated setting of the limiting roller and the flattening roller, the film can be initially flattened and guided before entering the winding stage, which can improve the winding quality.

[0009] Preferably, both movable plates are slidably connected to the surface of the connecting rod;

[0010] By adopting the above technical solution and setting the connecting rod, a stable guiding support can be provided for the sliding of the movable plate, ensuring that the movable plate will not deviate or shake during horizontal movement. This can further improve the accuracy and stability of the limit auxiliary plate adjustment. At the same time, the connecting rod can also enhance the structural strength of the entire winding adjustment mechanism.

[0011] Preferably, two first electric push rods are fixedly connected to opposite sides inside the support frame, and a U-shaped plate is fixedly connected to the bottom end of each first electric push rod;

[0012] By adopting the above technical solution, and by setting a first electric push rod, the height of the U-shaped plate can be adjusted vertically through its telescopic movement, thereby flexibly changing the position of the U-shaped plate within the support frame. The U-shaped plate can limit the film during the winding process, ensuring that the film maintains a good tension state during the winding stage.

[0013] Preferably, the U-shaped plate has movable grooves on both sides inside, movable blocks are provided inside the movable grooves, and a rotating rod is tightly nested between two movable blocks through a bearing. An adjusting roller is fixedly connected to the surface of the rotating rod, and a pressure sensor is fixedly connected between the bottom of the movable block and the bottom of the movable groove.

[0014] By adopting the above technical solution and setting a pressure sensor, the pressure changes generated by the moving block can be monitored in real time, thereby reflecting the film tension on the adjusting roller. When the film tension is too high, the film will exert a large upward force on the adjusting roller. At this time, the pressure value detected by the pressure sensor decreases, and the feedback signal is transmitted to the control system. The control system adjusts the extension and retraction of the electric push rod to reduce the height of the U-shaped plate, thereby increasing the pressure of the adjusting roller on the film. This can prevent the film from being stretched, deformed, or broken due to excessive tension. When the film tension is too low, the weight of the adjusting roller will be entirely applied to the pressure sensor. At this time, the pressure value detected by the pressure sensor increases, and the signal is also fed back to the control system. The control system will control the electric push rod to extend to raise the height of the U-shaped plate, reducing the pressure of the adjusting roller on the film. This can prevent the film from becoming loose and wrinkled due to insufficient tension.

[0015] Preferably, a sliding groove is provided on the inner side of the movable groove, and sliding blocks are fixedly connected to both sides of the movable block, and the sliding blocks are slidably connected in the sliding groove.

[0016] By adopting the above technical solution and setting the cooperative structure of sliding groove and sliding block, the movement direction of the moving block can be precisely limited, which can ensure that the moving block slides stably in the vertical direction and avoid lateral displacement or shaking during pressure changes.

[0017] Preferably, the top of the support frame is fixedly connected to two opposite sides of the top, and an electric slide rail is fixedly connected between the two connecting plates. An electric slider is slidably connected inside the electric slide rail.

[0018] By adopting the above technical solution and setting a drive structure for the electric slide rail and the electric slider, the structure at the bottom of the electric slider can be moved flexibly.

[0019] Preferably, a cutting blade is provided at the bottom of the electric slider;

[0020] By adopting the above technical solution and setting a linkage structure between the cutting blade and the electric slider, the cutting blade can be driven by the electric slide rail to move quickly in the horizontal direction, and the film can be precisely cut after the blown film is completed.

[0021] Preferably, a door is provided on the front of the side shell;

[0022] By adopting the above technical solution and setting the opening and closing structure of the door and the side shell, a convenient passage can be provided for the maintenance, parts replacement and operation during the film winding process inside the device.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] This blown film machine winding device, by setting a second electric push rod, can adjust the angle of the rotating support plate by telescopic adjustment, which can drive the connecting box and connecting rod to rotate as a whole. By setting a dual-axis motor, the operation of the dual-axis motor can drive the threaded rods on both sides to rotate synchronously, so that the threaded cylinder moves horizontally on the threaded rods, and drives the movable plate to slide along the through hole, thereby allowing the distance between the two limiting auxiliary plates to be precisely adjusted. This can ensure that the film remains centered and aligned during the winding process, and can prevent wrinkles or deviations from the film edges. Through the cooperation of the limiting roller and the flattening roller, the film can be initially flattened and guided before entering the winding stage, which can improve the winding quality. Attached Figure Description

[0025] Figure 1 This is a frontal three-dimensional structural diagram of this application;

[0026] Figure 2 This is a side-view perspective three-dimensional structural diagram of this application;

[0027] Figure 3 This is a schematic diagram of the structure in which the groove is placed in this application;

[0028] Figure 4 This is a structural schematic diagram of the cross-section of the collection box in this application;

[0029] Figure 5 for Figure 4 A magnified cross-sectional view of the structure at point A in the middle.

[0030] In the diagram: 1. Support frame; 2. Side shell; 201. Door body; 3. Limiting roller; 4. First electric push rod; 401. U-shaped plate; 402. Movable groove; 403. Movable block; 404. Pressure sensor; 405. Sliding groove; 406. Sliding block; 407. Rotating rod; 408. Adjusting roller; 5. Flattening roller; 6. Connecting plate; 601. Electric slide rail; 602. Electric slider; 603. Cutting blade; 7. Second electric push rod; 8. Rotating support plate; 9. Connecting rod; 10. Connecting box; 1001. Dual-axis motor; 1002. Threaded rod; 1003. Threaded cylinder; 1004. Movable plate; 1005. Limiting auxiliary plate; 1006. Through hole; 11. Rotating rod. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0032] Example 1: A blown film machine winding device, referring to... Figure 1 , Figure 2 , Figure 4 and Figure 5 It includes a support frame 1, with side shells 2 on both sides of the support frame 1, and a limit roller 3 and a flattening roller 5 inside the support frame 1;

[0033] The support frame 1 has two opposite sides connected by pins to a second electric push rod 7. A rotating rod 11 is installed inside the support frame 1, and two rotating support plates 8 are rotatably connected to the surface of the rotating rod 11. One end of the second electric push rod 7 is movably connected to the side of the rotating support plate 8 by a pin. A connecting rod 9 and a connecting box 10 are fixedly connected between the two rotating support plates 8. The connecting box 10 is located at the bottom of the connecting rod 9. Two through holes 1006 are opened at the top of the connecting box 10. A dual-axis motor 1001 is fixedly connected inside the connecting box 10. A threaded rod 1002 is fixedly connected to the output end of the dual-axis motor 1001. A threaded cylinder 1003 is threadedly connected to the surface of the threaded rod 1002. A movable plate 1004 is fixedly connected to the surface of the threaded cylinder 1003. The movable plate 1004 is slidably connected within the through holes 1006. A limit auxiliary plate 1005 is fixedly connected to the top of the movable plate 1004. By setting the second electric push rod 7, the angle of the rotating support plate 8 can be adjusted by extension and retraction, which can drive the connecting box 10 and the connecting rod 9 to rotate as a whole, and can also dynamically adjust the retraction. The position of the winding roller is controlled by a dual-axis motor 1001. When the dual-axis motor 1001 operates, it drives the threaded rods 1002 on both sides to rotate synchronously, causing the threaded cylinder 1003 to move horizontally on the threaded rods 1002. This causes the movable plate 1004 to slide along the through hole 1006, thereby allowing precise adjustment of the distance between the two limiting auxiliary plates 1005. This ensures that the film remains centered and aligned during winding, preventing wrinkles or shifts at the film edges. The combination of the limiting roller 3 and the flattening roller 5 allows for preliminary flattening and guiding of the film before it enters the winding stage, improving winding quality. Both movable plates 1004 are slidably connected to the surface of the connecting rod 9. The connecting rod 9 provides stable guiding support for the sliding of the movable plates 1004, ensuring that the movable plates 1004 do not shift or wobble during horizontal movement. This further improves the accuracy and stability of the limiting auxiliary plates 1005 during adjustment. At the same time, the connecting rod 9 also enhances the structural strength of the entire winding adjustment mechanism.

[0034] Please see Figure 1 and Figure 3Two first electric push rods 4 are fixedly connected to opposite sides inside the support frame 1. A U-shaped plate 401 is fixedly connected to the bottom end of each first electric push rod 4. By extending and retracting the first electric push rods 4, the vertical height of the U-shaped plate 401 can be adjusted, thus flexibly changing the position of the U-shaped plate 401 within the support frame 1. The U-shaped plate 401 can limit the film during the winding process, ensuring that the film maintains good tension during the winding stage. Movable grooves 402 are provided on opposite sides inside the U-shaped plate 401. The 02 internal structure includes movable blocks 403, with a rotating rod 407 tightly nested between two movable blocks 403 via bearings. An adjusting roller 408 is fixedly connected to the surface of the rotating rod 407. A pressure sensor 404 is fixedly connected between the bottom of the movable blocks 403 and the bottom of the movable groove 402. By setting the pressure sensor 404, the pressure changes generated by the movable blocks 403 can be monitored in real time, thus reflecting the film tension on the adjusting roller 408. When the film tension is too high, the film will exert a large upward force on the adjusting roller 408. At this time, the pressure sensor 404... 04. The detected pressure value decreases, and a feedback signal is transmitted to the control system. The control system lowers the height of the U-shaped plate 401 by adjusting the extension and retraction of the electric push rod, thereby increasing the pressure of the adjusting roller 408 on the film. This prevents the film from stretching, deforming, or breaking due to excessive tension. When the film tension is too low, the weight of the adjusting roller 408 is entirely applied to the pressure sensor 404. At this time, the pressure value detected by the pressure sensor 404 increases, and a signal is also fed back to the control system. The control system then controls the electric push rod to extend to raise the height of the U-shaped plate 401, reducing the pressure. The pressure of the small adjusting roller 408 on the film can prevent the film from becoming loose and wrinkled due to insufficient tension. The inner side of the movable groove 402 is provided with a sliding groove 405. The movable block 403 is fixedly connected to the sliding blocks 406 on both sides. The sliding blocks 406 are slidably connected in the sliding groove 405. By setting the cooperation structure of the sliding groove 405 and the sliding blocks 406, the movement direction of the movable block 403 can be precisely limited, which can ensure that the movable block 403 slides stably in the vertical direction and avoids lateral displacement or shaking during pressure changes.

[0035] Please see Figure 1 and Figure 2The top of the support frame 1 is fixedly connected to two opposite sides of the top, and an electric slide rail 601 is fixedly connected between the two connecting plates 6. An electric slider 602 is slidably connected inside the electric slide rail 601. By setting the driving structure of the electric slide rail 601 and the electric slider 602, the structure at the bottom of the electric slider 602 can be flexibly moved. A cutting blade 603 is set at the bottom of the electric slider 602. By setting the linkage structure between the cutting blade 603 and the electric slider 602, the cutting blade 603 can be driven by the electric slide rail 601 to move quickly in the horizontal direction, so as to accurately cut the film after the film is blown. A door 201 is set on the front of the side shell 2. By setting the opening and closing structure of the door 201 and the side shell 2, a convenient passage can be provided for the maintenance, parts replacement and film winding process inside the device.

[0036] The implementation principle of this application embodiment is as follows: In use, first start the second electric push rod 7 to adjust the position of the rotating support plate 8 so that the rotating support plate 8 is close to the flattening roller 5. Then, place the pre-prepared take-up roller inside the two rotating support plates 8 and the limiting auxiliary plate 1005. After placement, pass the film to be rolled through the limiting roller 3, the adjusting roller 408 and the flattening roller 5 in sequence, and then wrap it around the surface of the take-up roller. Then, according to the width of the film, start the dual-axis motor 1001 through the control system. The dual-axis motor 1001 drives the threaded rod 1002 to rotate, so that the threaded cylinder 1003 drives the movable plate 1004 to slide along the through hole 1006, thereby adjusting the distance between the two limiting auxiliary plates 1005 until it matches the width of the film. After matching, the film can be rolled up.

[0037] During the winding process, the first electric push rod 4 and pressure sensor 404 are activated, and the height of the U-shaped plate 401 can be adjusted according to the tension requirements of the film, so that the adjusting roller 408 applies appropriate pressure to the film.

[0038] During the winding process, if the film tension changes, the pressure sensor 404 will detect the change in pressure value in real time and feed it back to the control system. The control system will then control the extension and retraction of the first electric push rod 4 to adjust the height of the U-shaped plate 401 to maintain the stability of the film tension.

[0039] During the winding process, the second electric push rod 7 extends and retracts, causing the rotating support plate 8 to rotate around the rotating rod 11. This can dynamically adjust the position of the winding roller, as well as the position of the connecting box 10 and the limiting auxiliary plate 1005, ensuring the stability of the film winding.

Claims

1. A blown film machine winding device, comprising a support frame (1), characterized in that: The support frame (1) is provided with side shells (2) on both sides, and the support frame (1) is provided with a limiting roller (3) and a flattening roller (5). The support frame (1) has two opposite sides connected by pins to a second electric push rod (7). The support frame (1) has a rotating rod (11) inside. The rotating rod (11) has two rotating support plates (8) rotatably connected to its surface. One end of the second electric push rod (7) is movably connected to the side of the rotating support plate (8) by a pin. A connecting rod (9) and a connecting box (10) are fixedly connected between the two rotating support plates (8). The connecting box (10) is located at the bottom of the connecting rod (9). The top of the connecting box (10) is located inside the top of the connecting rod (9). Two through holes (1006) are opened at the end. A dual-axis motor (1001) is fixedly connected inside the connecting box (10). A threaded rod (1002) is fixedly connected to the output end of the dual-axis motor (1001). A threaded cylinder (1003) is threadedly connected to the surface of the threaded rod (1002). A movable plate (1004) is fixedly connected to the surface of the threaded cylinder (1003). The movable plate (1004) is slidably connected in the through hole (1006). A limit auxiliary plate (1005) is fixedly connected to the top of the movable plate (1004).

2. The blown film machine winding device according to claim 1, characterized in that: Both of the movable plates (1004) are slidably connected to the surface of the connecting rod (9).

3. The blown film machine winding device according to claim 1, characterized in that: The support frame (1) has two first electric push rods (4) fixedly connected to each other on both sides inside, and the bottom of the first electric push rod (4) is fixedly connected to a U-shaped plate (401).

4. The blown film machine winding device according to claim 3, characterized in that: The U-shaped plate (401) has movable grooves (402) on both sides inside. Movable blocks (403) are provided inside the movable grooves (402). A rotating rod (407) is tightly nested between the two movable blocks (403) through a bearing. An adjusting roller (408) is fixedly connected to the surface of the rotating rod (407). A pressure sensor (404) is fixedly connected between the bottom of the movable block (403) and the bottom of the movable groove (402).

5. A blown film machine winding device according to claim 4, characterized in that: The movable groove (402) has a sliding groove (405) on its inner side. The movable block (403) has a sliding block (406) fixedly connected to each other on both sides. The sliding block (406) is slidably connected in the sliding groove (405).

6. The blown film machine winding device according to claim 1, characterized in that: The support frame (1) has connecting plates (6) fixedly connected to the top of both sides. An electric slide rail (601) is fixedly connected between the two connecting plates (6). An electric slider (602) is slidably connected inside the electric slide rail (601).

7. A blown film machine winding device according to claim 6, characterized in that: A cutting blade (603) is provided at the bottom of the electric slider (602).

8. The blown film machine winding device according to claim 1, characterized in that: The side shell (2) has a door (201) on its front.

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