A tpu film smoothing device
By introducing a tension adjustment mechanism and a heat transfer oil system into the TPU film smoothing device, the problems of tension and temperature control were solved, achieving stable smoothing of the TPU film and improving the smoothing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI GONGKUAN NEW MATERIALS CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-19
AI Technical Summary
Existing TPU film smoothing devices cannot adjust the tension during material transfer, resulting in poor smoothing quality and unsatisfactory smoothing effect at room temperature.
A TPU film smoothing device, including a tension adjustment mechanism, guide wheels, and a smoothing mechanism, is used. Tension adjustment and temperature control are achieved through a hollow shaft and a heat transfer oil system, ensuring synchronous rotation of the smoothing wheels and uniform heating.
It achieves stable tension adjustment and uniform heating of TPU film, improves smoothing effect, ensures that film is not easily stretched or loosened during smoothing, and enhances smoothing quality.
Smart Images
Figure CN224374859U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of film smoothing and technology, specifically a TPU film smoothing device. Background Technology
[0002] TPU film is a film material made of thermoplastic polyurethane. To avoid wrinkles during processing, its surface needs to be carefully smoothed.
[0003] Chinese Patent No. 202323422086.0 discloses a smoothing device for PU film composite fabrics, belonging to the field of composite fabric technology. It can assist in the adsorption of impurities and fabric lint during the air extraction process, ensuring stable cleaning of the composite fabric surface. It also minimizes the adhesion between the composite fabric and impurities during subsequent smoothing, thus guaranteeing the overall quality of the composite fabric. The smoothing device for PU film composite fabrics includes a top frame with a trapezoidal platform structure at the top. Two support components are symmetrically arranged on the top of the top frame. Two cleaning components for fabric cleaning are installed at one end of the top of the top frame. A first smoothing roller and a second smoothing roller are respectively installed at the end of the top of the top frame away from the cleaning components. Each cleaning component includes an adsorption box with a funnel-shaped adsorption cavity. Through holes are equidistantly arranged at the bottom of the adsorption cavity. Cleaning grooves are symmetrically arranged on the adsorption box, and a winding roller is rotatably arranged within the cleaning groove.
[0004] When using this invention, the tension of the material during transmission cannot be adjusted, and the smoothing at room temperature results in poor smoothing quality. Utility Model Content
[0005] The purpose of this invention is to provide a TPU film smoothing device to solve the problems mentioned in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a TPU film smoothing device, comprising a smoothing device; the smoothing device consists of a mounting frame, a tension adjusting mechanism, guide wheels, and a smoothing mechanism; the smoothing mechanism is installed at the upper end of the mounting frame; the tension adjusting mechanism is installed inside the mounting frame at the front end of the smoothing mechanism; the guide wheels are installed on the upper side of the mounting frame at the front end of the tension adjusting mechanism; a tension adjusting wheel is installed between the upper sides of the tension adjusting mechanism; the smoothing mechanism consists of two smoothing wheels; a hollow shaft is installed in the middle of the smoothing wheels; both ends of the hollow shaft are rotatably mounted on the upper side of the mounting frame; through holes are provided on both sides of the hollow shaft; liquid guiding slip rings are installed on both sides of the hollow shaft; the liquid guiding slip rings are fixedly installed on the outer side of the mounting frame; a gear is installed at one end of the hollow shaft; the other end of the hollow shaft is installed at the front end of a power mechanism; the power mechanism is installed on one side of the mounting frame; an oil cavity is provided inside the smoothing wheel, and the oil cavity is filled with heat-conducting oil.
[0007] Preferably, a heat-conducting plate is provided on the outer side of the hollow shaft, the heat-conducting plate is welded to the outer side of the hollow shaft, and the heat-conducting plate extends into the oil cavity.
[0008] Preferably, the power mechanism consists of an electric motor and a transmission, with the transmission mounted on one side of the mounting bracket via a bracket and the electric motor mounted on the other side of the transmission.
[0009] Preferably, the tension adjustment mechanism consists of a mounting groove, a slide rod, a spring, and a slider. The slider is slidably mounted on the outside of the slide rod, the slide rod is mounted inside the mounting groove, the mounting groove is mounted inside the mounting frame, and the spring is mounted on the outside of the slide rod at the upper end of the slider.
[0010] Preferably, a damping sleeve is provided on the inner side of the slider, and the damping sleeve is slidably mounted on the outer side of the slider rod.
[0011] Preferably, dynamic sealing rings are installed on both sides of the fluid guiding slip ring, and the dynamic sealing rings are installed on the outside of the hollow shaft.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The hollow shaft is connected to the heat transfer oil supply system through the liquid guide slip ring. The heat transfer oil enters the hollow shaft through the through hole and flows into the oil chamber of the smoothing wheel. The power mechanism drives the hollow shaft to rotate, which in turn causes the smoothing wheel to rotate. The heat transfer oil in the oil chamber flows with the rotation of the smoothing wheel, which can evenly transfer heat to the smoothing wheel and keep the smoothing wheel at a suitable temperature. This temperature allows the TPU film to maintain good flexibility during the smoothing process and makes it easier to eliminate wrinkles. In addition, the gears on the two smoothing wheels mesh with each other to ensure the synchronicity of their rotation and ensure that the pressure applied to the film is uniform and stable.
[0014] 2. The heat-conducting plate on the outside of the hollow shaft increases the contact area between the hollow shaft and the outside environment, accelerating the heat transfer efficiency. On the other hand, the heat-conducting plate extends into the oil cavity, allowing for more thorough contact with the heat-conducting oil inside. When the heat-conducting oil flows within the oil cavity, the heat-conducting plate can quickly absorb the heat from the oil and transfer it to the hollow shaft, or transfer the heat from the hollow shaft to the heat-conducting oil, thereby achieving efficient heat exchange. This ensures a more uniform and stable temperature between the hollow shaft and the smoothing wheel, further enhancing the smoothing effect on the TPU film.
[0015] 4. The tension adjustment mechanism regulates the tension of the TPU film through its structural characteristics. When the film tension changes, it generates a corresponding force on the tension adjustment wheel. If the tension increases, it pushes the slider upward along the slide bar. At this time, the spring is compressed, and the elastic force generated by the spring acts in the opposite direction on the slider, offsetting part of the tension and reducing the film tension. If the tension decreases, the spring pushes the slider downward along the slide bar, applying greater pressure to the film through the tension adjustment wheel, thus increasing the film tension. The mounting groove provides installation space for the slide bar, spring, and slider. The slide bar guides the slider's movement, ensuring that the slider can only move in a fixed direction, thereby stably adjusting the film tension. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the smoothing mechanism of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the smoothing roller of this utility model;
[0020] Figure 4 This is a schematic diagram of the tension adjustment mechanism of this utility model.
[0021] In the diagram: 1. Smoothing device; 2. Smoothing mechanism; 3. Tension adjustment mechanism; 4. Guide wheel; 5. Mounting groove; 6. Slide rod; 7. Spring; 8. Damping sleeve; 9. Slider; 10. Smoothing roller; 11. Gear; 12. Mounting bracket; 13. Fluid guide slip ring; 14. Power mechanism; 15. Gearbox; 16. Electric motor; 17. Through hole; 18. Oil chamber; 19. Fluid guide plate; 20. Hollow shaft; 21. Dynamic seal ring. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the present invention, a TPU film smoothing device includes a smoothing device 1. The smoothing device 1 consists of a mounting frame 12, a tension adjusting mechanism 3, guide wheels 4, and a smoothing mechanism 2. The smoothing mechanism 2 is installed at the upper end of the mounting frame 12. The tension adjusting mechanism 3 is installed inside the mounting frame 12 at the front end of the smoothing mechanism 2. The guide wheels 4 are installed on the upper side of the mounting frame 12 at the front end of the tension adjusting mechanism 3. Tension adjusting wheels are installed on the upper side of the tension adjusting mechanism 3. The smoothing mechanism 2 consists of two smoothing wheel sets. The smoothing wheel has a hollow shaft 20 installed in the middle. The two ends of the hollow shaft 20 are rotatably mounted on the upper side of the mounting frame 12. Through holes 17 are provided on both sides of the hollow shaft 20. Liquid guiding slip rings 13 are installed on both sides of the hollow shaft 20 and are fixedly installed on the outside of the mounting frame 12. Gears 11 are installed on one end of the hollow shaft 20. The other end of the hollow shaft 20 is installed at the front end of the power mechanism 14. The power mechanism 14 is installed on one side of the mounting frame 12. An oil cavity 18 is provided inside the smoothing wheel and is filled with heat-conducting oil.
[0024] A heat-conducting plate 19 is provided on the outer side of the hollow shaft. The heat-conducting plate 19 is welded to the outer side of the hollow shaft and extends into the oil cavity 18. The heat-conducting plate 19 on the outer side of the hollow shaft increases the contact area between the hollow shaft and the outside, thus accelerating the heat transfer efficiency. On the other hand, the heat-conducting plate 19 extends into the oil cavity 18, allowing it to make more full contact with the heat-conducting oil in the oil cavity 18. When the heat-conducting oil flows in the oil cavity 18, the heat-conducting plate 19 can quickly absorb the heat of the heat-conducting oil and transfer it to the hollow shaft, or transfer the heat of the hollow shaft to the heat-conducting oil, thereby achieving efficient heat exchange and ensuring that the temperature of the hollow shaft and the smoothing wheel is more uniform and stable, further improving the smoothing effect on the TPU film.
[0025] The power mechanism 14 consists of an electric motor 16 and a gearbox 15. The gearbox 15 is mounted on one side of the mounting bracket 12 via a bracket, and the electric motor 16 is mounted on the other side of the gearbox 15. The power mechanism 14 provides power for the rotation of the smoothing wheel. After the electric motor 16 starts, the output power is transmitted to the gearbox 15. The gearbox 15 adjusts the speed of the electric motor 16 according to actual needs and transmits the appropriate speed to the hollow shaft 20, thereby driving the smoothing wheel to rotate at an appropriate speed. This power transmission method can precisely control the speed of the smoothing wheel to match the conveying speed of the TPU film, ensuring that the film is not stretched due to excessive speed during the smoothing process, nor is the wrinkles not effectively smoothed due to excessively slow speed.
[0026] The tension adjustment mechanism 3 consists of a mounting groove 5, a slide bar 6, a spring 7, and a slider 9. The slider 9 is slidably mounted on the outside of the slide bar 6, which is mounted inside the mounting groove 5. The mounting groove 5 is mounted inside the mounting bracket 12. The spring 7 is mounted on the outside of the slide bar 6 at the upper end of the slider 9. The tension adjustment mechanism 3 adjusts the tension of the TPU film through its structural characteristics. When the tension of the film changes, it generates a corresponding force on the tension adjustment wheel. If the tension increases, it pushes the slider 9 upward along the slide bar 6. At this time, the spring 7 is compressed, and the elastic force generated by the spring 7 acts in the opposite direction on the slider 9, offsetting part of the tension and reducing the film tension. If the tension decreases, the spring 7 pushes the slider 9 downward along the slide bar 6, applying greater pressure to the film through the tension adjustment wheel, thus increasing the film tension. The mounting groove 5 provides mounting space for the slide bar 6, spring 7, and slider 9. The slide bar 6 provides guidance for the sliding of the slider 9, ensuring that the slider 9 can only move in a fixed direction, thereby stably adjusting the film tension. A damping sleeve 8 is provided on the inner side of the slider 9. The damping sleeve 8 is slidably installed on the outer side of the slide rod 6. When the slider 9 slides along the slide rod 6, the damping sleeve 8 on the inner side of the slider 9 will generate a certain frictional force between itself and the slide rod 6. This frictional force forms a damping effect, which can slow down the sliding speed of the slider 9 and prevent the slider 9 from moving rapidly due to sudden changes in film tension, making the tension adjustment process more stable. Through the damping effect of the damping sleeve 8, the tension adjustment wheel can be prevented from generating a violent impact force on the film, protecting the TPU film from damage, and ensuring a stable transition of film tension.
[0027] Dynamic sealing rings 21 are installed on both sides of the liquid guide slip ring 13. The dynamic sealing rings 21 are installed on the outside of the hollow shaft 20. During the rotation of the hollow shaft 20, the dynamic sealing rings 21 can tightly fit the surface of the hollow shaft 20, effectively preventing the heat transfer oil in the oil cavity 18 from leaking from the gap between the liquid guide slip ring 13 and the hollow shaft 20. At the same time, the dynamic sealing rings 21 can also prevent external dust, impurities, etc. from entering the oil cavity 18, ensuring the purity and performance of the heat transfer oil, ensuring the stability of heat transfer, thereby maintaining the normal working temperature of the smoothing wheel and ensuring the smoothing quality of the TPU film.
[0028] The working principle and usage process of this utility model: In this TPU film smoothing device 1, the components of the smoothing device 1 work together to achieve effective smoothing of the TPU film. When the TPU... When the film enters the device, it first passes through guide wheel 4, which provides initial guidance and positioning to ensure accurate entry into the subsequent processing mechanism. Next, the film reaches tension adjustment mechanism 3, which adaptively adjusts according to the film's tension to maintain a suitable tension state, preventing excessive tension from causing stretching and deformation, or insufficient tension from causing relaxation and affecting the smoothing effect. Subsequently, the film enters smoothing mechanism 2, composed of two smoothing wheels. These wheels rotate relative to each other, applying uniform pressure to the film from both sides to flatten the wrinkles on its surface. Simultaneously, the hollow shaft 20 is connected to the heat transfer oil supply system via liquid guide slip ring 13. Heat transfer oil enters the hollow shaft 20 through through hole 17 and flows into the oil chamber 18 of the smoothing wheel. Power mechanism 14 drives the hollow shaft 20 to rotate, thereby rotating the smoothing wheel. The heat transfer oil in the oil chamber 18 flows with the rotation of the smoothing wheel, evenly transferring heat to it and maintaining a suitable temperature. This temperature allows the TPU to... The film maintains good flexibility during the smoothing process, making it easier to eliminate wrinkles. Furthermore, the gears 11 on the two smoothing wheels mesh with each other, ensuring the synchronization of their rotation and ensuring that the pressure applied to the film is uniform and stable.
[0029] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A TPU film smoothing device, comprising a smoothing device (1); characterized in that: The smoothing device (1) consists of a mounting frame (12), a tension adjusting mechanism (3), a guide wheel (4), and a smoothing mechanism (2). The smoothing mechanism (2) is installed on the upper part of the mounting frame (12). The tension adjusting mechanism (3) is installed inside the mounting frame (12) at the front end of the smoothing mechanism (2). The guide wheel (4) is installed on the upper part of the mounting frame (12) at the front end of the tension adjusting mechanism (3). A tension adjusting wheel is installed on the upper part of the tension adjusting mechanism (3). The smoothing mechanism (2) consists of two smoothing wheels, and a hollow shaft (20) is installed in the middle of the smoothing wheels. The hollow shaft (20) is rotatably mounted on the upper side of the mounting frame (12) at both ends. Through holes (17) are provided on both sides of the hollow shaft (20). Liquid guide slip rings (13) are installed on both sides of the hollow shaft (20). The liquid guide slip rings (13) are fixedly installed on the outside of the mounting frame (12). Gears (11) are installed on one end of the hollow shaft (20). The other end of the hollow shaft (20) is installed at the front end of the power mechanism (14). The power mechanism (14) is installed on one side of the mounting frame (12). An oil cavity (18) is provided inside the smoothing wheel. The oil cavity (18) is filled with heat transfer oil.
2. The TPU film smoothing device according to claim 1, characterized in that: A heat-conducting plate (19) is provided on the outside of the hollow shaft (20). The heat-conducting plate (19) is welded to the outside of the hollow shaft (20) and extends into the oil cavity (18).
3. The TPU film smoothing device according to claim 1, characterized in that: The power mechanism (14) consists of an electric motor (16) and a transmission (15). The transmission (15) is mounted on one side of the mounting bracket (12) via a bracket, and the electric motor (16) is mounted on one side of the transmission (15).
4. The TPU film smoothing device according to claim 1, characterized in that: The tension adjustment mechanism (3) consists of a mounting groove (5), a slide rod (6), a spring (7) and a slider (9). The slider (9) is slidably mounted on the outside of the slide rod (6). The slide rod (6) is mounted inside the mounting groove (5). The mounting groove (5) is mounted inside the mounting bracket (12). The spring (7) is mounted on the outside of the slide rod (6) at the upper end of the slider (9).
5. A TPU film smoothing device according to claim 4, characterized in that: A damping sleeve (8) is provided on the inner side of the slider (9), and the damping sleeve (8) is slidably installed on the outer side of the slide rod (6).
6. The TPU film smoothing device according to claim 1, characterized in that: The liquid guide slip ring (13) is equipped with dynamic sealing rings (21) on both sides, and the dynamic sealing rings (21) are installed on the outside of the hollow shaft (20).