Polyester film stretching and rewinding machine
By introducing a combination design of guide rollers, stretching rollers, pressure rollers and pressure sensors into the polyester film stretching and rewinding machine, the problem of inaccurate stretching force control was solved, and precise control and flatness of film winding were achieved.
Patent Information
- Application Number
- CN202422909358.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing polyester film stretching and rewinding machines cannot accurately control the stretching force during winding, resulting in the film being wound too tightly or too loosely, which affects the winding effect.
The design employs a combination of a main mechanism and a pressing mechanism, including guide rollers, stretching rollers, pressing rollers, and pressure sensors. Through the cooperation of an electric telescopic rod and springs, it achieves precise control and pressing of the film tension, ensuring the winding effect.
It achieves precise tension control of film winding, avoiding excessively tight or loose winding, and improving the flatness and quality of winding.
Smart Images
Figure CN223534519U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of film rewinding machine technology, specifically a polyester film stretching and rewinding machine. Background Technology
[0002] Thin film is a thin, flexible, transparent sheet, mainly made of plastics, adhesives, rubber, or other materials. Thin films include optical films, composite films, superconducting films, polyester films, nylon films, plastic films, etc., and are widely used in electronics, machinery, printing, and other industries. During the production process, thin films require slitting and rewinding, which necessitates the use of appropriate slitting and rewinding machines.
[0003] The existing polyester film stretching and rewinding machines have the following drawbacks during use: the film needs to be stretched during winding to ensure its flatness, but the stretching force cannot be precisely controlled, which can easily lead to the film being wound too tightly or too loosely, affecting the winding effect. Therefore, there is room for improvement. Utility Model Content
[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.
[0005] Therefore, the technical solution adopted by this utility model is as follows: a polyester film stretching and rewinding machine, comprising: a main body mechanism and a pressing mechanism, wherein the main body mechanism comprises two symmetrically arranged side plates, a guide roller rotatably mounted on the opposite side plates, a top plate fixed to the top of the opposite side plates, an electric telescopic rod symmetrically mounted on the top plate, a U-shaped frame fixed to the bottom of the electric telescopic rod, sliders slidably arranged on both sides of the U-shaped frame, a pressure sensor mounted on the bottom of the slider, and a stretching roller rotatably mounted between the opposite sliders.
[0006] The pressing mechanism includes a first U-shaped bracket fixed on opposite side plates, a second U-shaped bracket slidably disposed on the first U-shaped bracket, a pressing roller rotatably mounted on the second U-shaped bracket, and a plurality of springs disposed between the first U-shaped bracket and the second U-shaped bracket.
[0007] In a preferred embodiment, the present invention can be further configured such that the U-shaped frame includes a rectangular plate fixed to the bottom end of the electric telescopic pole and a frame symmetrically fixed to both sides of the rectangular plate.
[0008] In a preferred embodiment, the present invention can be further configured such that: the slider is fitted into the frame, a first groove is formed on the opposite inner side of the frame, and a first protrusion is fixed on both sides of the slider, the first protrusion being fitted into the first groove.
[0009] In a preferred embodiment, the present invention can be further configured such that the bottom end of the pressure sensor is fixed to the inner bottom wall of the frame.
[0010] In a preferred embodiment, the present invention can be further configured such that: a second groove is formed on the opposite inner side of the first U-shaped bracket, and a second protrusion is fixed on both sides of the second U-shaped bracket, the second protrusion being fitted into the second groove.
[0011] In a preferred embodiment, the present invention can be further configured such that one end of the spring is connected to a first U-shaped bracket and the other end is connected to a second U-shaped bracket.
[0012] In a preferred embodiment, the present invention can be further configured such that the pressure roller is pressed against the take-up roller.
[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:
[0014] 1. In this utility model, guide rollers and take-up rollers are installed between opposite side plates, and a top plate is fixed at the top of the opposite side plates. An electric telescopic rod is installed on the top plate, and a U-shaped frame is installed at the bottom of the electric telescopic rod. Sliding blocks are slidably set on both sides of the U-shaped frame, and pressure sensors are installed at the bottom of the sliding blocks. The stretching roller is rotated and installed on the opposite sliding blocks. Through the above settings, when the electric telescopic rod drives the U-shaped frame to move upward, the tension of the film during winding is ensured. At the same time, as the stretching roller moves upward, the tension of the film increases, and the downward force on the take-up roller also increases. At this time, the pressure sensor monitors the downward force of the take-up tube in real time. After the value detected by the pressure sensor reaches the set value, the electric telescopic rod is turned off, which enables precise control of the winding tension and ensures the film winding effect.
[0015] 2. In this utility model, a first U-shaped bracket is installed on the inner side of the opposite side plate, and a second U-shaped bracket is slidably arranged inside the first U-shaped bracket. A pressure roller is installed on the second U-shaped bracket, and the pressure roller is close to the surface of the take-up roller. At the same time, multiple springs are installed between the first U-shaped bracket and the second U-shaped bracket. Through the above arrangement, the pressure roller can press the film wound by the take-up roller to prevent air bubbles from forming between the films, thereby affecting the winding effect and increasing the practical performance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional view of the present invention;
[0018] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;
[0019] Figure 4 This is a partial structural schematic diagram of the present invention.
[0020] Figure label:
[0021] 100. Main body; 110. Side plate; 120. Guide roller; 130. Take-up roller; 140. Top plate; 150. Electric telescopic rod; 160. U-shaped frame; 161. Rectangular plate; 162. Frame; 1621. First chute; 170. Slider; 171. First protrusion; 180. Pressure sensor; 190. Tension roller;
[0022] 200, clamping mechanism; 210, first U-shaped bracket; 211, second slide groove; 220, second U-shaped bracket; 221, second protrusion; 230, clamping roller; 240, spring. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.
[0024] Some embodiments of this utility model are described below with reference to the accompanying drawings.
[0025] Combination Figure 1-4 As shown, this embodiment provides a polyester film stretching and rewinding machine, including: a main body 100 and a pressing mechanism 200.
[0026] The main structure includes two symmetrically arranged side plates 110, a guide roller 120 rotatably mounted on the opposite side plates 110, a top plate 140 fixed to the top of the opposite side plates 110, an electric telescopic rod 150 symmetrically mounted on the top plate 140, a U-shaped frame 160 fixed to the bottom of the electric telescopic rod 150, a slider 170 slidably arranged on both sides of the U-shaped frame 160, a pressure sensor 180 mounted on the bottom of the slider 170, and a tension roller 190 rotatably mounted between the opposite sliders 170.
[0027] The side plate 110 is used to install other components, the guide tube is used to guide the film, the top plate 140 is used to install the electric telescopic rod 150 to ensure the stability of the electric telescopic rod 150, the electric telescopic rod 150 is used to install the U-shaped frame 160 and drive the U-shaped frame 160 to move up and down.
[0028] The U-shaped frame 160 includes a rectangular plate 161 fixed to the bottom of the electric telescopic rod 150 and a frame 162 symmetrically fixed to both sides of the rectangular plate 161. The slider 170 is fitted into the frame 162. A first groove 1621 is opened on the opposite inner side of the frame 162. A first protrusion 171 is fixed on both sides of the slider 170. The first protrusion 171 is fitted into the first groove 1621 to ensure the mobility of the slider 170. The slider 170 is used to install the stretching roller 190. The stretching roller 190 is used to stretch the film between the guide roller 120 and the winding roller 130 to ensure the tension of the film during winding and improve the winding effect.
[0029] The bottom end of the pressure sensor 180 is fixed to the inner bottom wall of the frame 162, and the top end is close to the bottom end of the slider 170. When the electric telescopic rod 150 drives the U-shaped frame 160 to move upward, the upward movement of the U-shaped frame 160 drives the pull rope roller to move upward, stretching the film between the guide roller and the take-up roller 130. At the same time, as the stretching roller 190 moves upward, the tension of the film increases, and the downward pull force on the take-up roller 130 also increases. At this time, the pressure sensor 180 monitors the downward pull force of the take-up tube in real time, so as to accurately control the tension of the take-up.
[0030] The pressing mechanism 200 is used to press the film on the take-up roller 130, and includes a first U-shaped bracket 210 fixed on the opposite side plate 110, a second U-shaped bracket 220 slidably disposed on the first U-shaped bracket 210, a pressing roller 230 rotatably mounted on the second U-shaped bracket 220, and a plurality of springs 240 disposed between the first U-shaped bracket 210 and the second U-shaped bracket 220.
[0031] The first U-shaped bracket 210 is used to install the second U-shaped bracket 220, and the second U-shaped bracket 220 is used to install the pressure roller 230. The first U-shaped bracket 210 has a second sliding groove 211 on its opposite inner side. The second protrusion 221 is fixed on both sides of the second U-shaped bracket 220. The second protrusion 221 is fitted into the second sliding groove 211 to limit the movement of the second U-shaped bracket. At the same time, one end of the spring 240 is connected to the first U-shaped bracket 210 and the other end is connected to the second U-shaped bracket 220. Under the action of the spring 240, it can ensure that the pressure roller 230 is always pressed against the film surface on the take-up roller 130, avoiding the generation of air bubbles between the films and improving the film take-up effect.
[0032] The working principle and usage process of this utility model are as follows: In use, the film is wound around the guide roller 120, stretch roller 190, and pressure roller 230 in sequence onto the take-up roller 130 to wind the film. During winding, the electric telescopic rod 150 is activated, driving the U-shaped frame 160 to move upward. The upward movement of the U-shaped frame 160 drives the stretch roller 190 to move upward, stretching the film between the guide roller 120 and the take-up roller 130. As the stretch roller 190 moves upward, the tension of the film increases, and the downward pull on the take-up roller 130 also increases. At this time, the pressure sensor 180 monitors the downward pull of the take-up tube in real time. After the value detected by the pressure sensor 180 reaches the set value, the electric telescopic rod 150 is turned off. At the same time, under the action of the spring 240, the second U-shaped bracket 220 drives the pressure roller 230 to always be in contact with the film surface on the take-up roller 130, pressing the film wound by the take-up roller 130 to prevent air bubbles from forming between the films.
[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A polyester film stretching and rewinding machine, comprising: The main body (100) and the pressing mechanism (200) are characterized in that the main body includes two symmetrically arranged side plates (110), a guide roller (120) rotatably mounted on the opposite side plates (110), a top plate (140) fixed to the top of the opposite side plates (110), an electric telescopic rod (150) symmetrically mounted on the top plate (140), a U-shaped frame (160) fixed to the bottom of the electric telescopic rod (150), a slider (170) slidably arranged on both sides of the U-shaped frame (160), a pressure sensor (180) mounted on the bottom of the slider (170), and a tension roller (190) rotatably mounted between the opposite sliders (170). The pressing mechanism (200) includes a first U-shaped bracket (210) fixed on the opposite side plate (110), a second U-shaped bracket (220) slidably disposed on the first U-shaped bracket (210), a pressing roller (230) rotatably mounted on the second U-shaped bracket (220), and a plurality of springs (240) disposed between the first U-shaped bracket (210) and the second U-shaped bracket (220).
2. The polyester film stretching and rewinding machine according to claim 1, characterized in that, The U-shaped frame (160) includes a rectangular plate (161) fixed to the bottom of the electric telescopic pole (150) and a frame (162) symmetrically fixed to both sides of the rectangular plate (161).
3. A polyester film stretching and rewinding machine according to claim 2, characterized in that, The slider (170) is fitted inside the frame (162). A first groove (1621) is opened on the opposite inner side of the frame (162). A first protrusion (171) is fixed on both sides of the slider (170). The first protrusion (171) is fitted inside the first groove (1621).
4. A polyester film stretching and rewinding machine according to claim 2, characterized in that, The pressure sensor (180) is fixed at its bottom end to the inner bottom wall of the frame (162).
5. A polyester film stretching and rewinding machine according to claim 1, characterized in that, The first U-shaped bracket (210) has a second groove (211) on its inner side, and the second U-shaped bracket (220) has a second protrusion (221) fixed on both sides, and the second protrusion (221) is fitted into the second groove (211).
6. A polyester film stretching and rewinding machine according to claim 1, characterized in that, One end of the spring (240) is connected to the first U-shaped bracket (210), and the other end is connected to the second U-shaped bracket (220).
7. A polyester film stretching and rewinding machine according to claim 1, characterized in that, The pressure roller (230) is pressed against the take-up roller (130).