PE film winding and rolling device

Abstract

This disclosure relates to the technical field of PE film processing. One embodiment of this disclosure provides a PE film winding and rewinding device, including: a frame and an inner frame. The inner frame is fixed to the bottom of the frame body. A winding assembly is disposed inside the frame body, and a pressing assembly is disposed on the inner frame. The winding assembly includes a fixed bushing and a movable bushing. The fixed bushing and the movable bushing are rotatably connected to both sides of the frame body. The fixed bushing is driven to rotate by electricity. A transmission rod is inserted into the movable bushing. Several locking rods are provided on the end faces of both the fixed bushing and the transmission rod. A winding shaft is inserted between the fixed bushing and the transmission rod. Several locking slots are opened at both ends of the winding shaft, and the locking slots are inserted and connected to the locking rods. Several connecting ears are provided on the movable bushing. Through the above technical solution, the technical problems of the prior art, which require auxiliary tools to separate the shaft and the transmission mechanism when loading and unloading the roll material, are cumbersome in operation, and are prone to phenomena such as film loosening and wrinkling during the winding process, are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of PE film processing, and specifically to a PE film winding and rewinding device. Background Technology

[0002] In the production and processing of PE film, winding is a crucial step in achieving product shaping, storage, and transportation, and the winding quality directly affects the subsequent performance of the PE film. Traditional PE film winding devices have significant technical shortcomings in practical applications, mainly in terms of ease of loading and unloading and winding tightness.

[0003] Traditional winding devices typically use fixed-structure rolls, requiring auxiliary tools to separate the shaft from the transmission mechanism during loading and unloading. This cumbersome process not only prolongs roll changeover time and reduces production continuity but also increases the risk of edge damage due to improper manual handling. Furthermore, traditional devices lack sufficient tension adjustment precision for PE films of varying thicknesses, leading to film loosening and wrinkling during winding. This is especially problematic at high speeds, where gaps can form within the roll, potentially causing collapse and deformation during storage or transportation.

[0004] Furthermore, some devices lack alignment guidance for the film roll ends, resulting in uneven edges after winding, requiring additional trimming and increasing production costs. These drawbacks make traditional winding devices unable to meet the requirements of modern PE film production for efficient roll changing and tight winding, necessitating a new type of optimized winding device to overcome these technical bottlenecks. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a PE film winding device, which solves the technical problems in the prior art that require auxiliary tools to separate the shaft and transmission mechanism when loading and unloading the roll, the operation steps are cumbersome, and the film layer is prone to loosening and wrinkling during the winding process.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a PE film winding and rewinding device, comprising:

[0007] The frame and the inner frame, wherein the inner frame is fixed to the bottom of the frame body;

[0008] A winding assembly, wherein the winding assembly is disposed inside the frame;

[0009] A clamping assembly, which is disposed on the inner frame;

[0010] The winding assembly includes a fixed bushing and a movable bushing. The fixed bushing and the movable bushing are rotatably connected to both sides of the frame. The fixed bushing is driven to rotate by electricity. A transmission rod is inserted into the movable bushing. Several locking rods are provided on the end faces of both the fixed bushing and the transmission rod.

[0011] As a further technical solution, a take-up shaft is inserted between the fixed bushing and the transmission rod. Both ends of the take-up shaft are provided with several slots, which are inserted and connected to the locking rod. The movable bushing is provided with several connecting ears.

[0012] As a further technical solution, one end of the transmission rod is provided with several movable frames, each of which is movably fitted into the connecting ear, and each movable frame is fitted with a spring. One end of the transmission rod is provided with a handle.

[0013] As a further technical solution, the clamping assembly includes a transmission groove, which is formed on the top of the inner frame. A pair of slide rails are provided in the transmission groove, and a moving block is slidably connected on the slide rails. The moving block is connected in the transmission groove by a linear drive.

[0014] As a further technical solution, a crossbeam is provided on the movable block, and a pair of connecting rods are rotatably connected to both ends of the crossbeam via pins. A tension spring is connected between the connecting rods and the crossbeam, and a pressure roller is rotatably connected between the pair of opposing connecting rods.

[0015] As a further technical solution, the pressure roller is attached to both sides of the take-up shaft, and the pressure roller is slightly lower than the height of the take-up shaft.

[0016] As a further technical solution, both the lever and the slot are arranged in a cross-shaped pattern.

[0017] As a further technical solution, the connecting rod can rotate outward by 30° through its connection with the crossbar pin.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] 1. In this disclosure, the winding assembly solves the problem of cumbersome loading and unloading of traditional winding shafts through an elastic locking structure. The cross-shaped locking levers precisely engage with the locking slots, and the springs provide continuous preload force, ensuring stable transmission without slippage. Pulling the lever allows for quick loading and unloading of the winding shaft, eliminating the need for tools and significantly reducing roll changeover time. This design balances transmission reliability and ease of operation, improves production continuity, avoids film roll damage caused by manual operation, and adapts to the needs of winding shafts of different specifications.

[0020] 2. In this disclosure, the clamping assembly, through its follow-up clamping design, solves the problem of film layer loosening and wrinkling during winding. A tension spring drives the clamping roller to always adhere to both sides of the PE film, automatically adjusting its angle as the film roll diameter increases to maintain stable pressure and prevent interlayer gaps. The moving block adjusts its position along the slide rail to ensure that the clamping range covers the entire width of the PE film. This structure makes the wound film roll tight and flat, reducing the risk of collapse during storage and transportation, improving product quality stability, and adapting to the winding needs of PE films of different thicknesses. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0023] Figure 2 This is an isometric drawing of the present disclosure;

[0024] Figure 3 This is an isometric sectional view of the present disclosure;

[0025] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0026] In the diagram: 1. Frame; 2. Inner frame; 3. Rewinding assembly; 3-1. Fixed bushing; 3-2. Movable bushing; 3-3. Transmission rod; 3-4. Locking rod; 3-5. Rewinding shaft; 3-6. Locking slot; 3-7. Connecting ear; 3-8. Movable frame; 3-9. Spring; 3-10. Handle; 4. Pressing assembly; 4-1. Transmission groove; 4-2. Slide rail; 4-3. Moving block; 4-4. Crossbar; 4-5. Connecting rod; 4-6. Tension spring; 4-7. Pressing roller. Detailed Implementation

[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0030] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figures 1-4 As shown, a PE film winding and rewinding device according to an embodiment of the present disclosure is illustrated, comprising:

[0034] The frame 1 and the inner frame 2 are fixed to the bottom of the frame 1.

[0035] A winding assembly 3 is disposed inside the frame 1;

[0036] Clamping assembly 4 is disposed on the inner frame 2;

[0037] The winding assembly 3 includes a fixed bushing 3-1 and a movable bushing 3-2. The fixed bushing 3-1 and the movable bushing 3-2 are rotatably connected to both sides of the frame 1. The fixed bushing 3-1 is driven to rotate by electricity. A transmission rod 3-3 is inserted into the movable bushing 3-2. Several locking rods 3-4 are provided on the end faces of both the fixed bushing 3-1 and the transmission rod 3-3. A winding shaft 3-5 is inserted between the fixed bushing 3-1 and the transmission rod 3-3. Several slots 3-6 are provided at both ends of the winding shaft 3-5. The slots 3-6 are inserted into the locking rods 3-4. Several connecting ears 3-7 are provided on the movable bushing 3-2. Several movable frames 3-8 are provided at one end of the transmission rod 3-3. The movable frames 3-8 are movably fitted into the connecting ears 3-7. Springs 3-9 are fitted on each movable frame 3-8. A handle 3-10 is provided at one end of the transmission rod.

[0038] In some examples, in order to achieve stable winding of PE film and convenient loading and unloading of winding shaft 3-5, a winding assembly 3 is designed. The assembly includes a fixed bushing 3-1 and a movable bushing 3-2 on both sides of the frame 1, which are rotatably connected by bearings. The fixed bushing 3-1 is driven by a motor, and the transmission rod 3-3 in the movable bushing 3-2 can slide axially. The locking rods 3-4 on the end faces of the two are distributed in a ring and are adapted to the locking grooves 3-6 at both ends of the winding shaft 3-5.

[0039] The connecting lug 3-7 on the movable bushing 3-2 corresponds one-to-one with the movable frame 3-8 at one end of the transmission rod 3-3. The movable frame 3-8 is slidably fitted inside the connecting lug 3-7, and the spring 3-9 is fitted on the movable frame 3-8, with its two ends abutting against the ends of the connecting lug 3-7 and the movable frame 3-8 respectively. The handle 3-10 is vertically fixed to the exposed end of the transmission rod 3-3. During operation, pulling the handle 3-10 causes the transmission rod 3-3 to compress the spring 3-9, causing the movable frame 3-8 to slide along the connecting lug 3-7. After the slots 3-6 at both ends of the take-up shaft 3-5 are aligned with the locking rod 3-4, the handle 3-10 is released, the spring 3-9 returns to its original position, pushing the transmission rod 3-3 to move. The locking rod 3-4 inserts into the slot 3-6, and the rotation of the fixed bushing 3-1 drives the take-up shaft 3-5 to rotate synchronously through the locking rod 3-4, achieving stable winding of the PE film.

[0040] When the take-up shaft 3-5 needs to be replaced, simply pull the lever 3-10 again to disengage the locking lever 3-4 from the slot 3-6, and it can be removed without disassembling other parts. The preload of the spring 3-9 ensures a tight fit between the locking lever 3-4 and the slot 3-6, preventing slippage during winding. The sliding fit between the movable frame 3-8 and the connecting ear 3-7 ensures smooth movement of the transmission rod 3-3. This assembly, through its elastic locking structure, achieves stable transmission of the take-up shaft 3-5, simplifies loading and unloading operations, and improves roll changing efficiency.

[0041] like Figures 1-4 As shown, this embodiment proposes that the pressing assembly 4 includes a transmission groove 4-1, which is formed on the top of the inner frame 2. A pair of slide rails 4-2 are provided in the transmission groove 4-1. A moving block 4-3 is slidably connected to the slide rails 4-2. The moving block 4-3 is connected to the transmission groove 4-1 by a linear drive. A crossbeam 4-4 is provided on the moving block 4-3. A pair of connecting rods 4-5 are rotatably connected to both ends of the crossbeam 4-4 by a pin. A tension spring 4-6 is connected between the connecting rods 4-5 and the crossbeam 4-4. A pressing roller 4-7 is rotatably connected between the pair of opposing connecting rods 4-5.

[0042] In some examples, in order to achieve continuous compression of the PE film during the winding process, a compression assembly 4 is designed. The slide rail 4-2 is fixed along the length direction in the transmission groove 4-1 at the top of the inner frame 2 of the assembly. The slider at the bottom of the moving block 4-3 is slidably connected to the slide rail 4-2 and is driven to move along the slide rail 4-2 by a linear drive device such as a cylinder or lead screw.

[0043] The horizontal frame 4-4 at the top of the movable block 4-3 is fixed horizontally. The connecting rods 4-5 at both ends are rotatably connected to the horizontal frame 4-4 via pins. The two ends of the tension spring 4-6 are hooked onto the hanging rings on the middle of the connecting rod 4-5 and the side of the horizontal frame 4-4, respectively. The lower ends of the two opposing connecting rods 4-5 are rotatably connected to the pressure roller 4-7 via bearings. The roller surface is in contact with the PE film roll on the winding shaft 3-5. During operation, the tension of the tension spring 4-6 causes the connecting rod 4-5 to drive the pressure roller 4-7 to apply pressure to the PE film roll, ensuring a tight fit between the film layers. As the winding diameter increases, the PE film roll pushes the pressure roller 4-7 upward, and the connecting rod 4-5 rotates around the pin and stretches the tension spring 4-6. The tension increases with the deformation, maintaining a stable clamping force.

[0044] A linear drive unit moves the movable block 4-3 along the slide rail 4-2, adjusting the position of the pressure roller 4-7 according to the winding width to ensure complete coverage of the PE film. The cooperation between the slide rail 4-2 and the movable block 4-3 ensures smooth movement of the pressure structure, while the elastic characteristics of the tension spring 4-6 adapt to changes in roll diameter, keeping the pressure force within a suitable range. This assembly, through its elastic follow-up pressure design, effectively prevents gaps between PE film layers during winding, ensuring the stability of winding quality.

[0045] For example, such as Figure 1 As shown, the pressure roller 4-7 is attached to both sides of the take-up shaft 3-5, and the pressure roller 4-7 is slightly lower than the height of the take-up shaft 3-5.

[0046] In some examples, the pressure rollers 4-7 are positioned against the two sides of the winding shaft 3-5, slightly below its height, allowing them to apply inward pressure to the wound PE film from both sides. This prevents the edges of the PE film from curling up during winding, ensuring the film roll remains flat on both sides. The slightly lower position allows the pressure to better conform to the winding trajectory of the film roll, maintaining stable pressure even as the film roll diameter increases, thus improving winding tightness.

[0047] For example, such as Figure 1 As shown, the locking rod 3-4 and the locking slot 3-6 are both distributed in a cross shape.

[0048] In some examples, the cross-shaped distribution of the locking levers 3-4 and slots 3-6 enhances the stability of the connection. The cross-shaped distribution ensures more even force distribution, preventing wobbling or slippage when the winding shaft 3-5 rotates. This structure makes the engagement of the locking levers 3-4 and slots 3-6 more secure, ensuring efficient power transmission, smooth winding, and reducing tension fluctuations during PE film winding.

[0049] For example, such as Figure 1 As shown, the connecting rod 4-5 can rotate outward by 30° through the pin connection with the crossbar 4-4.

[0050] In some examples, the connecting rod 4-5 can rotate outward by 30° to accommodate the increase in film roll diameter during winding. When the film roll thickens, the connecting rod 4-5 rotates outward, causing the pressure roller 4-7 to move outward synchronously with the film roll, while the tension of the tension spring 4-6 maintains the clamping force. The 30° rotation angle provides ample space for changes in film roll diameter, ensuring stable clamping effect throughout the winding process.

[0051] In actual use: Pulling the handle 3-10 compresses the spring 3-9 on the transmission rod 3-3, and the movable frame 3-8 slides along the connecting ear 3-7. Align the slots 3-6 at both ends of the take-up shaft 3-5 with the locking rods 3-4 of the fixed bushing 3-1 and the transmission rod 3-3. Release the handle 3-10, and the spring 3-9 returns to its original position, pushing the transmission rod 3-3. The locking rod 3-4 inserts into the slots 3-6 to complete the fixation. The fixed bushing 3-1 rotates, causing the take-up shaft 3-5 to rotate, and the PE film begins to wind. At the same time, the moving block 4-3 moves along the slide rail 4-2 to adjust the position of the crossbeam 4-4. Under the action of the tension spring 4-6, the connecting rod 4-5 drives the pressure roller 4-7 to adhere to both sides of the PE film. As the diameter of the film roll increases, the connecting rod 4-5 rotates outward and stretches the tension spring 4-6 to maintain stable pressure. After winding is complete, pull the lever 3-10 to disengage the locking lever 3-4 from the slot 3-6, and remove the winding shaft 3-5. No auxiliary tools are required throughout the process, achieving efficient winding and tight winding.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A PE film winding and winding device characterized by, include: The frame (1) and the inner frame (2) are fixed inside the bottom of the frame (1); A winding assembly (3) is disposed inside the frame (1); A clamping assembly (4) is disposed on the inner frame (2); The winding assembly (3) includes a fixed bushing (3-1) and a movable bushing (3-2). The fixed bushing (3-1) and the movable bushing (3-2) are rotatably connected to both sides of the frame (1). The fixed bushing (3-1) is driven to rotate by electricity. A transmission rod (3-3) is inserted into the movable bushing (3-2). Both the fixed bushing (3-1) and the transmission rod (3-3) have several locking rods (3-4) on their end faces.

2. The PE film winding and rolling device according to claim 1, characterized in that, A take-up shaft (3-5) is inserted between the fixed bushing (3-1) and the transmission rod (3-3). Both ends of the take-up shaft (3-5) are provided with several slots (3-6). The slots (3-6) are inserted and connected to the locking rod (3-4). Several connecting ears (3-7) are provided on the movable bushing (3-2).

3. The PE film winding and rolling device according to claim 2, characterized in that, The transmission rod (3-3) has several movable frames (3-8) at one end, and each movable frame (3-8) is movably fitted into the connecting ear (3-7). Each movable frame (3-8) is fitted with a spring (3-9), and the transmission rod (3-3) has a handle (3-10) at one end.

4. The PE film winding and rolling device according to claim 2, characterized in that, The clamping assembly (4) includes a transmission groove (4-1) which is opened on the top of the inner frame (2). A pair of slide rails (4-2) are provided in the transmission groove (4-1). A moving block (4-3) is slidably connected on the slide rails (4-2). The moving block (4-3) is connected in the transmission groove (4-1) by a linear drive.

5. The PE film winding and rolling device according to claim 4, characterized in that, A crossbeam (4-4) is provided on the movable block (4-3). A pair of connecting rods (4-5) are rotatably connected to both ends of the crossbeam (4-4) by a pin. A tension spring (4-6) is connected between the connecting rods (4-5) and the crossbeam (4-4). A pressure roller (4-7) is rotatably connected between the pair of opposing connecting rods (4-5).

6. The PE film winding and rolling device according to claim 5, characterized in that, The pressure roller (4-7) is attached to both sides of the take-up shaft (3-5), and the pressure roller (4-7) is slightly lower than the height of the take-up shaft (3-5).

7. The PE film winding and rolling device according to claim 2, characterized in that, Both the lever (3-4) and the slot (3-6) are arranged in a cross shape.

8. The PE film winding and rolling device according to claim 5, characterized in that, The connecting rod (4-5) can rotate outward by 30° through the pin connection with the crossbar (4-4).

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