A winding mechanism for a PET film
By designing a PET film winding mechanism, and utilizing a combination of connecting rods, limiting bolts, pressing rollers, and guide rollers, the problems of loosening and skewing of PET film during winding were solved, achieving a tight and neat winding effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YULAN NEW MATERIAL SCI & TECH CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-24
AI Technical Summary
PET film is prone to loosening during the winding process, which affects the winding effect.
A PET film winding mechanism is adopted, including a winding frame, an adjustment mechanism, a compression mechanism, and a guiding mechanism. Through the combined design of connecting rods, limit bolts, pressing rollers, and guiding rollers, the PET film is tightened and guided to avoid loosening and skewing.
This effectively prevents the PET film from loosening and tilting during the winding process, improving the tightness and neatness of the winding.
Smart Images

Figure CN224547634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of film winding technology, and in particular to a winding mechanism for PET film. Background Technology
[0002] PET protective film, also known as high-temperature resistant polyester film, plays a vital role in multiple fields due to its excellent physical properties, chemical stability, dimensional accuracy, high transparency, and recyclability. It is widely used not only in magnetic recording, photosensitive materials, and electronics, but also in electrical insulation, industrial films, and packaging decoration. Furthermore, PET protective film can be processed into everyday items such as LCD screen protectors for mobile phones, LCD TVs, and mobile phone buttons.
[0003] Currently, after PET film is processed and produced, it is wound up by a winding machine. However, during the winding process, the PET film becomes loose due to the transport of multiple conveyor rollers over a certain distance, which affects the winding effect. To address this issue, we propose a PET film winding mechanism. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a PET film winding mechanism.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A PET film winding mechanism includes a winding frame with a PET film roll wound on its surface. An adjustment mechanism is fixedly connected to the top of the winding frame, and a pressing mechanism is fixedly connected to one end of the adjustment mechanism. A pressing mechanism is installed below the pressing mechanism, and a guide mechanism is fixedly connected to the other end of the adjustment mechanism.
[0007] Preferably, the adjusting mechanism includes a guide column, which is fixedly connected to the top of the winding frame, and a connecting rod is sleeved on the surface of the guide column, with a limiting bolt threaded into the top of the connecting rod.
[0008] Preferably, the extrusion mechanism includes a fixing block, one end of the connecting rod is fixedly connected to the fixing block, and an adjusting stud is inserted inside the fixing block, with a nut threaded onto the top of the adjusting stud.
[0009] Preferably, a connecting frame is connected to the lower part of the adjusting stud via a bearing, and a connecting slider is fixedly connected to the inner side of the connecting frame.
[0010] Preferably, the pressing mechanism includes a first mounting frame, the connecting slider is slidably inserted into the side of the first mounting frame, and a pressing roller is mounted inside the first mounting frame via a bearing.
[0011] Preferably, the guiding mechanism includes a fixed frame, the other end of the connecting rod is fixedly connected to the fixed frame, and a second mounting frame is fixedly connected above the fixed frame, with a guide roller mounted inside the second mounting frame via a bearing.
[0012] Preferably, the cross-section of the fixing frame is U-shaped, and the inner wall dimension of the fixing frame is larger than the surface dimension of the winding shaft above the winding frame.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This device uses a guide column fixedly connected to the top of the winding frame to facilitate the installation of two connecting rods. The connecting rods can then drive the fixing block to install the connecting frame. The connecting frame and the connecting slider can then easily connect and install the first mounting frame and the pressing roller. When the nut is turned, the first mounting frame can drive the pressing roller to press against the surface of the PET film roll, which can increase the tension of the PET film roll and prevent the PET film roll from loosening during winding, thus affecting the winding process.
[0015] 2. This device moves along the surface of the guide post via the connecting rod, which allows the fixed frame to drive the second mounting frame and the guide roller to come into contact with the side of the PET film roll. This serves to limit and guide the winding of the PET film roll, preventing it from tilting during winding. When the limiting bolt is rotated, it can press the limiting bolt against the surface of the guide post, facilitating the function of the limiting connecting rod. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of a PET film winding mechanism proposed in this utility model;
[0017] Figure 2 for Figure 1 A three-dimensional schematic diagram of the extrusion mechanism and the guiding mechanism in the middle;
[0018] Figure 3 for Figure 1 A three-dimensional schematic diagram of the adjusting stud and the second mounting frame structure;
[0019] Figure 4 for Figure 1 A three-dimensional cross-sectional view of the fixed block and connecting frame structure.
[0020] In the diagram: 1. Winding frame; 2. PET film roll;
[0021] 3. Adjustment mechanism; 31. Guide column; 32. Connecting rod; 33. Limit bolt;
[0022] 4. Extrusion mechanism; 41. Fixing block; 42. Adjusting stud; 43. Nut; 44. Connecting frame; 45. Connecting slider;
[0023] 5. Pressing mechanism; 51. First mounting frame; 52. Pressing roller;
[0024] 6. Guiding mechanism; 61. Fixed frame; 62. Second mounting frame; 63. Guide roller. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] Reference Figure 1-4 A PET film winding mechanism includes a winding frame 1, on which a PET film roll 2 is wound. An adjustment mechanism 3 is fixedly connected to the top of the winding frame 1, and a pressing mechanism 4 is fixedly connected to one end of the adjustment mechanism 3. A pressing mechanism 5 is installed below the pressing mechanism 4. The pressing mechanism 5 can conveniently press the PET film roll 2. A guide mechanism 6 is fixedly connected to the other end of the adjustment mechanism 3. The function of the two sets of guide mechanisms 6 can be conveniently adjusted through the adjustment mechanism 3.
[0027] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the adjustment mechanism 3 includes a guide post 31. The guide post 31 is fixedly connected to the top of the winding frame 1, and a connecting rod 32 is sleeved on the surface of the guide post 31. A limiting bolt 33 is threaded into the top of the connecting rod 32. The cross-section of the guide post 31 is rectangular, and a through hole adapted to the guide post 31 is opened in the connecting rod 32, so that the connecting rod 32 can slide along the surface of the guide post 31, which plays the role of limiting and guiding the connecting rod 32.
[0028] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the extrusion mechanism 4 includes a fixed block 41, one end of the connecting rod 32 is fixedly connected to the fixed block 41, and an adjusting stud 42 is inserted inside the fixed block 41. A nut 43 is threaded on the upper part of the adjusting stud 42. By rotating the nut 43, the function of the adjusting stud 42 can be easily adjusted.
[0029] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the lower part of the adjusting stud 42 is connected to the connecting frame 44 via a bearing, and the inner side of the connecting frame 44 is fixedly connected to the connecting slider 45. By connecting the lower part of the adjusting stud 42 to the connecting frame 44 via a bearing, the adjusting stud 42 can easily push the connecting frame 44.
[0030] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the pressing mechanism 5 includes a first mounting frame 51, a connecting slider 45 is slidably inserted into the side of the first mounting frame 51, and a pressing roller 52 is installed inside the first mounting frame 51 through a bearing. The connecting slider 45 is driven by the connecting frame 44 to slide along the groove opened on the side of the first mounting frame 51, which plays the role of adjusting the connecting rod 32. The pressing roller 52 installed in the first mounting frame 51 can squeeze the PET film roll 2, which makes it easier to tighten the wound PET film roll 2.
[0031] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the guiding mechanism 6 includes a fixed frame 61, the other end of the connecting rod 32 is fixedly connected to the fixed frame 61, and a second mounting frame 62 is fixedly connected above the fixed frame 61. A guide roller 63 is installed inside the second mounting frame 62 through a bearing. The guide roller 63 rotates inside the second mounting frame 62 to facilitate the guiding of the winding PET film roll 2 and prevent the PET film roll 2 from becoming skewed.
[0032] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the cross-section of the fixing frame 61 is set to U-shape, and the inner wall size of the fixing frame 61 is larger than the surface size of the winding shaft above the winding frame 1. By setting the cross-section of the fixing frame 61 to U-shape, the fixing frame 61 can drive the second mounting frame 62 and the guide roller 63 to be set on both sides of the PET film roll 2.
[0033] Working principle: When this utility model is in use, when the winding frame 1 is in use, according to the attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 By rotating the limiting bolt 33, the limiting bolt 33 can be moved away from the surface of the guide post 31. At this time, by moving the connecting rod 32, the connecting rod 32 can be moved along the surface of the guide post 31, which makes it convenient to adjust the distance between the two sets of fixed frames 61. This makes it convenient for the second mounting frame 62 to drive the guide roller 63 to abut against the side of the PET film roll 2, thus guiding the PET film roll 2 to rewind. At this time, rotating the limiting bolt 33 can make the limiting bolt 33 press against the surface of the guide post 31, thus limiting the connecting rod 32. When the PET film roll 2 is rewinding, rotating the nut 43 can make the adjusting stud 42 push the connecting frame 44 to move, which makes it convenient for the first mounting frame 51 to drive the pressing roller 52 to press against the surface of the PET film roll 2, thus keeping the PET film roll 2 taut during rewinding.
[0034] The above is the complete working principle of this utility model.
[0035] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.
[0036] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
[0037] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. A PET film winding mechanism, comprising a winding frame (1), characterized in that, The surface of the winding frame (1) is wrapped with PET film rolls (2), an adjustment mechanism (3) is fixedly connected above the winding frame (1), and a pressing mechanism (4) is fixedly connected to one end of the adjustment mechanism (3), and a pressing mechanism (5) is installed below the pressing mechanism (4). A guide mechanism (6) is fixedly connected to the other end of the adjustment mechanism (3).
2. The PET film winding mechanism according to claim 1, characterized in that, The adjustment mechanism (3) includes a guide column (31), the guide column (31) is fixedly connected above the winding frame (1), and a connecting rod (32) is sleeved on the surface of the guide column (31), and a limiting bolt (33) is threaded into the upper part of the connecting rod (32).
3. The PET film winding mechanism according to claim 2, characterized in that, The extrusion mechanism (4) includes a fixed block (41), one end of the connecting rod (32) is fixedly connected to the fixed block (41), and an adjusting stud (42) is inserted inside the fixed block (41), and a nut (43) is threaded on the top of the adjusting stud (42).
4. The PET film winding mechanism according to claim 3, characterized in that, The adjusting stud (42) is connected to a connecting frame (44) via a bearing below, and a connecting slider (45) is fixedly connected to the inner side of the connecting frame (44).
5. The PET film winding mechanism according to claim 4, characterized in that, The pressing mechanism (5) includes a first mounting frame (51), the connecting slider (45) is slidably inserted into the side of the first mounting frame (51), and a pressing roller (52) is installed inside the first mounting frame (51) through a bearing.
6. The PET film winding mechanism according to claim 2, characterized in that, The guiding mechanism (6) includes a fixed frame (61), the other end of the connecting rod (32) is fixedly connected to the fixed frame (61), and a second mounting frame (62) is fixedly connected above the fixed frame (61). A guide roller (63) is installed inside the second mounting frame (62) through a bearing.
7. A PET film winding mechanism according to claim 6, characterized in that, The cross-section of the fixed frame (61) is U-shaped, and the inner wall dimension of the fixed frame (61) is larger than the surface dimension of the winding shaft above the winding frame (1).