Reflective film winding apparatus with tension adjustment

Abstract

The utility model belongs to the technical field of reflection film production equipment, especially a reflection film winding equipment with tension adjustment, including base, still including transition mechanism, tension adjustment mechanism and blanking mechanism who set up in sequence on the base along reflection film conveying direction, the tension adjustment mechanism includes tension adjustment subassembly, first tension detection spare and first drive mechanism, the blanking mechanism includes adjustable roll -up subassembly, second tension detection spare and second drive mechanism, second tension detection spare is integrated on adjustable roll -up subassembly, and is linked with second drive mechanism, through " pressure transmitter + wireless transmission type film pressure sensor " double point detection, avoid single detection point to miss tension fluctuation, the detection precision of remarkable promotion, avoid film material to appear stretch, wrinkle and so on Problem, adopt servo motor and sensor linkage, can according to film roll diameter change real -time compensation tension, need not manual intervention, and production efficiency is significantly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of reflective film production equipment, specifically relating to a reflective film winding device with tension adjustment. Background Technology

[0002] As a key material in optics, architecture and other fields, the quality of reflective film winding directly affects the subsequent processing and use. For example, in backlight modules, wrinkles in reflective film can lead to uneven light reflection and reduce the brightness of display devices; while the stretching deformation of reflective film used in buildings can affect its thermal insulation performance and service life.

[0003] Existing winding equipment mostly uses fixed tension mechanisms (such as spring tension rollers), which cannot adjust the tension in real time according to changes in film thickness and winding diameter, easily leading to film stretching and wrinkling of thick films. During the winding process, as the film roll diameter increases, the fixed tension mechanism cannot compensate for the tension fluctuations caused by the diameter change, requiring frequent manual stops for adjustment, which is inefficient and has poor adjustment accuracy.

[0004] To address the aforementioned problems, this utility model proposes a reflective film winding device with tension adjustment. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a reflective film winding device with tension adjustment, which is convenient to use, easy to adjust, and has high safety performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reflective film winding device with tension adjustment, including a base, and further including a transition mechanism, a tension adjustment mechanism and a feeding mechanism sequentially arranged on the base along the reflective film conveying direction; The tension adjustment mechanism is used to dynamically adjust the tension of the film material. It includes a tension adjustment component that can move in the vertical direction, a first tension detection element for detecting the tension of the film material, and a first drive mechanism for driving the tension adjustment component to move. The first tension detection element is linked with the first drive mechanism to collect film material tension data in real time. The feeding mechanism is used to realize the film material winding. It includes an adjustable winding assembly for winding the film material, a second tension detection element for detecting the tension of the film material during the winding process, and a second drive mechanism for adjusting the winding diameter. The second tension detection element is integrated on the adjustable winding assembly and is linked with the second drive mechanism to collect the tension data of the film material after winding in real time.

[0007] As a preferred technical solution of this utility model, the transition mechanism includes a first side plate and a transition roller; The two first side uprights are symmetrically fixed to the top surface of the base; The transition roller is rotatably mounted on the inner side of the two first side uprights; The axis of the transition roller is perpendicular to the conveying direction of the reflective film, and is used to guide the film material smoothly into the tension adjustment mechanism.

[0008] As a preferred technical solution of this utility model, the tension adjustment assembly includes a lifting seat, a bearing seat, and a tension adjustment roller, and the first tension detection element is a pressure transmitter; The two lifting seats are symmetrically distributed and are vertically mounted above the base via the first drive mechanism, and an installation port is provided on the lifting seats; The bearing housing is installed inside the mounting port; The tension adjusting roller is rotatably positioned between the two bearing seats; The pressure transmitter is clamped between the inner top surface of the mounting port and the bearing seat, and is used to convert the film pressure on the tension regulating roller into a tension electrical signal.

[0009] As a preferred technical solution of this utility model, the first driving mechanism includes an internally threaded tube, a threaded column, a first servo motor, an active synchronous pulley, a driven synchronous pulley, an active synchronous belt, a linkage synchronous pulley, and a linkage synchronous belt; The internally threaded tube is fixed to the bottom surface of the lifting seat, and the internally threaded tube has internal threads; The threaded column is rotatably mounted on the top surface of the base and engages with the internal threaded pipe thread. The first servo motor is fixed to the top surface of the base, and the active synchronous wheel is fixed to the output shaft of the first servo motor; The driven synchronous pulley is fixed to the threaded column, and the driving synchronous belt is tensioned to the driving synchronous pulley through the driven synchronous pulley; A synchronous pulley is fixed on each of the two threaded posts, and the synchronous belt is tensioned through the two synchronous pulleys.

[0010] As a preferred embodiment of this utility model, the tension adjustment mechanism further includes a guide block and a guide column; The two guide blocks are symmetrically fixed at both ends of the lifting seat, and the guide column is fixed to the top surface of the base and passes through the guide blocks.

[0011] As a preferred technical solution of this utility model, it also includes a second side plate and a second servo motor; Two second side uprights are symmetrically distributed and movably disposed on the top of the base, and the adjustable winding assembly is rotatably disposed between the two second side uprights; The second servo motor is fixed to the outer side of the second side plate and is used to drive the adjustable winding assembly to rotate in order to wind up the film material.

[0012] As a preferred technical solution of this utility model, the adjustable winding assembly includes a rotating disk, a mounting shaft, an arc-shaped inner support plate, and a flipping support arm, and the second tension detection element is a wireless transmission type thin film pressure sensor. The two rotating disks are symmetrically distributed, and the mounting shaft is fixed to the outer side of the rotating disk and rotatably connected to the second side plate. Multiple arc-shaped inner support plates are distributed at equal intervals along the circumferential direction; The two sets of flipping support arms are symmetrically distributed, and one end of each flipping support arm is hinged to the arc-shaped inner support plate, and the other end is hinged to the corresponding rotating disk. The wireless transmission type thin film pressure sensor is attached to the outer wall of the arc-shaped inner support plate and is used to detect the contact pressure between the film material and the arc-shaped inner support plate during the winding process; The second drive mechanism is used to drive the two second side plates to move toward each other or in opposite directions.

[0013] As a preferred technical solution of this utility model, the second drive mechanism includes a fixed plate, a threaded screw, and a third servo motor; The two fixing plates are symmetrically fixed to the top surface of the base; The threaded screw is rotatably mounted between the two fixed plates, and the two second side plates respectively engage with the two reverse threads of the threaded screw. The third servo motor is fixed to the outer wall of the fixed plate and is used to drive the threaded screw to rotate.

[0014] As a preferred embodiment of the present invention, the second driving mechanism further includes a guide rod; The two guide rods are symmetrically fixed between the two fixing plates and pass through the second side plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. By using a dual-point detection system of "pressure transmitter + wireless transmission type thin film pressure sensor", tension fluctuations are avoided from being missed at a single detection point, which significantly improves the detection accuracy and prevents problems such as stretching and wrinkling of the film material. 2. By using a servo motor and sensor linkage, tension can be compensated in real time according to changes in the film roll diameter, without the need for manual intervention, significantly improving production efficiency.

[0016] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0017] 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: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the isometric structure of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 This is an isometric structural diagram of the adjustable winding assembly in this utility model; Figure 5 This utility model Figure 2 A schematic diagram of the enlarged longitudinal adjustment mechanism in the middle; Figure 6 This utility model Figure 2 A magnified schematic diagram of the lateral adjustment mechanism.

[0018] In the diagram: 1. Base; 2. Transition mechanism; 21. First side plate; 22. Transition roller; 3. Tension adjustment mechanism; 31. Lifting seat; 311. Mounting port; 32. Bearing seat; 33. Tension adjustment roller; 34. Pressure transmitter; 35. First drive mechanism; 351. Internal threaded tube; 352. Threaded column; 353. First servo motor; 354. Driving synchronous pulley; 355. Driven synchronous pulley; 356. Driving synchronous belt; 357. Linkage synchronous pulley; 3 58. Synchronous belt; 36. Guide block; 37. Guide column; 4. Feeding mechanism; 41. Second side plate; 42. Adjustable winding assembly; 421. Rotary disk; 422. Mounting shaft; 423. Arc-shaped inner support plate; 424. Tilting support arm; 425. Wireless transmission type thin film pressure sensor; 43. Second servo motor; 44. Second drive mechanism; 441. Fixing plate; 442. Threaded screw; 443. Third servo motor; 444. Guide rod. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-6The present invention provides the following technical solution: a reflective film winding device with tension adjustment, including a base 1, and further including a transition mechanism 2, a tension adjustment mechanism 3 and a feeding mechanism 4 arranged sequentially on the base 1 along the reflective film conveying direction.

[0021] Furthermore, by Figure 1 and Figure 2 As shown, in this embodiment, the tension adjustment mechanism 3 is used to dynamically adjust the film tension. It includes a tension adjustment component that can move vertically, a first tension detection element for detecting the film tension, and a first drive mechanism 35 for driving the tension adjustment component. The first tension detection element is linked to the first drive mechanism 35 to collect film tension data in real time. The unloading mechanism 4 is used to realize film winding. It includes an adjustable winding component 42 for winding the film, a second tension detection element for detecting the film tension during winding, and a second drive mechanism 44 for adjusting the winding diameter. The second tension detection element is integrated into the adjustable winding component 42 and is linked to the second drive mechanism 44. After collecting tension data of the film material after winding, the above scheme is adopted. When using the reflective film winding equipment of this application, a PLC control system is used. Before the reflective film winding operation is started, the operator uses the human-machine interface of the PLC control system to preset the tension threshold range of the first tension detection element, the winding tension target value of the second tension detection element, and the initial speed and roll diameter increment coefficient of the adjustable winding assembly 42, etc., according to the material of the reflective film to be wound (such as PET base film, PVC base film), thickness (usually 50-200μm) and winding requirements (such as roll diameter range 300-800mm, tension setting value 50-200N).

[0022] After the operation begins, the reflective film released by the external unwinding device first enters the transition mechanism 2. Its core function is to correct the posture of the film material and guide its conveying, eliminating any lateral deviation (such as left and right movement) that may occur during the unwinding process.

[0023] Subsequently, the membrane material after the transition enters the tension adjustment mechanism 3. At this time, the first tension detection element integrated at the inlet end of the tension adjustment component collects the current tension data of the membrane material in real time and converts the analog signal into a digital signal, which is then transmitted to the PLC control system. After receiving the data, the PLC immediately compares and analyzes it with the preset tension threshold range. If the membrane tension is detected to be lower than the lower threshold (e.g., the threshold is set to 80N, but the actual measured tension is 70N), the PLC determines that the membrane is in a relaxed state and then sends an action command to the first drive mechanism 35 to drive the tension adjustment component to move downward in the vertical direction, increasing the envelope length and contact angle of the membrane in the tension adjustment mechanism 3, thereby increasing the tension of the membrane until the tension data fed back by the first tension detection component rises back to the threshold range, and the PLC controls the first drive mechanism 35 to stop operating. If the membrane tension is detected to be higher than the upper limit threshold (e.g., 90N in actual detection), the PLC determines that there is a risk of overstretching of the membrane material and immediately instructs the first drive mechanism 35 to drive the tension adjustment component to move upward, reduce the membrane material envelope length and contact angle, and reduce the tension until the tension returns to the normal range, forming a dynamic closed loop of tension adjustment.

[0024] After the initial tension adjustment, the film material enters the feeding mechanism 4 for winding. During the winding process, the second tension detection element (which rotates synchronously with the adjustable winding assembly 42) integrated on the outside of the adjustable winding assembly 42 collects the tension data of the film material winding in real time and transmits the data to the PLC. The PLC compares this data with the preset winding tension target value and performs precise control of the second drive mechanism 44. If the tension fed back by the second tension detection element is higher than the target value (e.g., the target value is 100N, but the actual value is 110N), in addition to adjusting the rotation speed, the PLC can also finely adjust the winding diameter of the adjustable winding assembly 42 through the second drive mechanism 44 to reduce the squeezing force when the film is wound and reduce the tension. If the tension is lower than the target value, the rotation speed and pressure are adjusted in the opposite direction to ensure that the film maintains uniform tension during the winding process and to avoid wrinkling of the roll, misalignment between layers, or stretching deformation of the film.

[0025] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the transition mechanism 2 includes a first side plate 21 and a transition roller 22; the two first side plates 21 are symmetrically fixed to the top surface of the base 1; the transition roller 22 is rotatably installed on the inner side of the two first side plates 21; the axis of the transition roller 22 is perpendicular to the conveying direction of the reflective film, and is used to guide the film material smoothly into the tension adjustment mechanism 3. After adopting the above scheme, when the operation is started, the reflective film released by the external unwinding device first enters the transition mechanism 2: after the film material is output from the unwinding roller, it adheres to the outer circular surface of the transition roller 22 in a horizontal posture and passes over the top of the transition roller 22.

[0026] Optionally, by Figures 1-3As shown, in this embodiment, the tension adjustment assembly includes a lifting seat 31, a bearing seat 32, and a tension adjustment roller 33. The first tension detection element is a pressure transmitter 34. Two lifting seats 31 are symmetrically distributed and are vertically and vertically mounted above the base 1 via a first drive mechanism 35. An installation port 311 is provided on the lifting seat 31. The bearing seat 32 is installed in the installation port 311. The tension adjustment roller 33 is rotatably disposed between the two bearing seats 32. The pressure transmitter 34 is sandwiched between the inner top surface of the installation port 311 and the bearing seat 32, and is used to transmit the pressure of the film material received by the tension adjustment roller 33. Force is converted into tension electrical signal. After adopting the above scheme, when the film material enters the tension adjustment mechanism 3 after the posture is corrected by the transition mechanism 2, it will wrap around the outer surface of the tension adjustment roller 33 with a preset envelope angle (usually 30°-60°, set according to the elastic coefficient of the film material). At this time, the tension of the film material will be transmitted to the bearing seats 32 on both sides through the tension adjustment roller 33. Since the tension adjustment roller 33 is installed in the bearing seat 32 through the bearing rotation, the radial pressure generated by the tension of the film material will cause the bearing seat 32 to generate a small squeeze in the direction of the inner top surface of the mounting port 311 of the lifting seat 31.

[0027] The pressure transmitter 34, which is clamped between the inner top surface of the mounting port 311 and the bearing seat 32, will sense this extrusion force in real time, convert the mechanical pressure signal into a standard current signal, and transmit it to the PLC control system. The PLC will use the analog-to-digital converter module to parse the current signal into a specific tension value, and then compare it with the preset tension threshold range in real time.

[0028] Optionally, by Figures 1-3 , Figure 5 As shown, in this embodiment, the first drive mechanism 35 includes an internally threaded tube 351, a threaded post 352, a first servo motor 353, a driving synchronous pulley 354, a driven synchronous pulley 355, a driving synchronous belt 356, a linkage synchronous pulley 357, and a linkage synchronous belt 358; the internally threaded tube 351 is fixed to the bottom surface of the lifting seat 31, and the internally threaded tube 351 has internal threads; the threaded post 352 is rotatably mounted on the top surface of the base 1 and threadedly engaged with the internally threaded tube 351; the first servo motor 353 is fixed to the top surface of the base 1, and the driving synchronous pulley 354 is fixed to the output shaft of the first servo motor 353; the driven synchronous pulley 355 is fixed... On the threaded post 352, the active synchronous belt 356 is tensioned to the active synchronous belt 354 via the driven synchronous belt 355; on both threaded posts 352, there are linkage synchronous belts 357, and the linkage synchronous belt 358 is tensioned via the two linkage synchronous belts 357. With the above scheme, when the PLC issues a descent command (when the film tension is low), the output shaft of the first servo motor 353 rotates clockwise, driving the active synchronous belt 354 fixed at the shaft end to rotate synchronously. The active synchronous belt 354 transmits power to the driven synchronous belt 355 through the tensioned active synchronous belt 356, and the threaded post 352 rotates clockwise accordingly.

[0029] Meanwhile, both threaded posts 352 are fixed with a linkage synchronous pulley 357 at their lower ends, and the linkage synchronous belt 358 is tensioned by the two linkage synchronous pulleys 357 to form a synchronous transmission structure. Therefore, when the first threaded post 352 rotates, the second threaded post 352 will rotate synchronously at the same speed and in the same direction through the meshing transmission of the linkage synchronous pulley 357 and the linkage synchronous belt 358, ensuring the consistency of power transmission on both sides.

[0030] When the threaded column 352 rotates clockwise, the internal threaded tube 351 moves downward in a straight line along the axis of the threaded column 352 under the influence of the thread friction (rotational motion is converted into linear motion), which in turn drives the lifting seat 31, which is rigidly connected to the internal threaded tube 351, to descend synchronously.

[0031] Conversely, the threaded column 352 rotates counterclockwise and drives the internal threaded tube 351 to move the lifting seat 31 upward, thereby raising the tension adjusting roller 33.

[0032] Preferably, by Figures 1-3 As shown in this embodiment, the tension adjustment mechanism 3 also includes a guide block 36 and a guide column 37; the two guide blocks 36 are symmetrically fixed at both ends of the lifting seat 31, and the guide column 37 is fixed to the top surface of the base 1 and passes through the guide block 36. With the above scheme, when in use, the guide column 37 strictly restricts the movement trajectory of the lifting seat 31, so that it only moves vertically up and down along the axial direction of the guide column 37, avoiding the horizontal radial offset that may be caused by the thread transmission gap in the first drive mechanism 35.

[0033] Optionally, by Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, it also includes a second side plate 41 and a second servo motor 43; the two second side plates 41 are symmetrically distributed and movably disposed on the top of the base 1, and the adjustable winding assembly 42 is rotatably disposed between the two second side plates 41; the second servo motor 43 is fixed to the outer side of the second side plate 41 and is used to drive the adjustable winding assembly 42 to rotate in order to wind up the film material.

[0034] The adjustable take-up assembly 42 includes a rotating disk 421, a mounting shaft 422, an arc-shaped inner support plate 423, and a flipping support arm 424. The second tension detection element is a wireless transmission type membrane pressure sensor 425. Two rotating disks 421 are symmetrically distributed, and the mounting shaft 422 is fixed to the outer side of the rotating disk 421 and rotatably connected to the second side upright plate 41. Multiple arc-shaped inner support plates 423 are evenly spaced along the circumference. Two sets of flipping support arms 424 are symmetrically distributed, with one end of the flipping support arm 424 hinged to the arc-shaped inner support plate 423 and the other end hinged to the corresponding rotating disk 421. The wireless transmission type membrane pressure sensor 425 is used for detection. Force sensor 425 is attached to the outer wall of arc-shaped inner support plate 423 to detect the contact pressure between the film material and arc-shaped inner support plate 423 during the winding process; second drive mechanism 44 is used to drive the two second side upright plates 41 to move in opposite directions. With the above scheme, when the film material enters the adjustable winding assembly 42, its end is manually guided and fixed to the core surface formed by arc-shaped inner support plate 423. PLC commands the second servo motor 43 to start, and its output shaft drives the mounting shaft 422 to rotate through the coupling, which drives the rotating disk 421 to rotate synchronously with arc-shaped inner support plate 423, and the film material winding begins.

[0035] During the winding process, the wireless transmission type film pressure sensor 425 detects the contact pressure between the film material and the arc-shaped inner support plate 423 in real time: the tension of the film material is transmitted to the arc-shaped inner support plate 423 through the winding layers, causing the wireless transmission type film pressure sensor 425 to generate a resistance change, which is converted into a 0-5V voltage signal. This signal is then transmitted to the receiving module of the PLC via a wireless module (such as a Bluetooth module). The PLC converts the pressure signal into the actual tension value and compares it with the preset winding tension target value (such as 100N). If the detected tension is higher than the target value (e.g., 110N), the PLC immediately reduces the output speed of the second servo motor 43, reduces the speed difference between the film material linear speed and the upstream tension adjustment mechanism 3, and reduces the winding tension. If the detected tension is lower than the target value (e.g., 90N), the speed of the second servo motor 43 is increased to increase the winding tension, thus forming a real-time closed-loop control of the winding tension.

[0036] As the film material continues to be wound up, the roll diameter gradually increases. The PLC triggers the second drive mechanism 44 at regular intervals (e.g., once every 5 minutes, depending on the winding speed of the film material; the faster the winding speed, the shorter the time interval): driving the two second side uprights 41 to move towards each other along the guide rail (the distance between them decreases), causing the two rotating disks 421 to move closer to each other synchronously.

[0037] When the spacing of the rotating disks 421 decreases, the flipping support arm 424 flips outward due to the change in the spacing between the hinge points at both ends, pushing the arc-shaped inner support plate 423 to expand radially outward. Since multiple arc-shaped inner support plates 423 are evenly distributed along the circumference and the flipping support arm 424 moves synchronously, the expanded inner support structure still maintains a perfect circle, ensuring that the film material is evenly stressed when it is wound up.

[0038] During this process, the wireless transmission type thin film pressure sensor 425 will simultaneously detect the pressure change of the film material on the expanded arc-shaped inner support plate 423. The PLC will combine the new roll diameter data to correct the tension conversion coefficient and avoid tension detection deviation caused by the change of the inner support diameter.

[0039] Optionally, by Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, the second drive mechanism 44 includes a fixed plate 441, a threaded screw 442, and a third servo motor 443. The two fixed plates 441 are symmetrically fixed to the top surface of the base 1. The threaded screw 442 is rotatably installed between the two fixed plates 441, and the two second side plates 41 are respectively engaged with the two reverse threads of the threaded screw 442. The third servo motor 443 is fixed to the outer wall of the fixed plate 441 and is used to drive the threaded screw 442 to rotate. With the above scheme, when in use, the PLC sends a start command to the third servo motor 443. When the third servo motor 443 drives the threaded screw 442 to rotate clockwise, under the action of the reverse threads, the left second side plate 41 moves to the left along the threaded screw 442, and the right second side plate 41 moves to the right along the threaded screw 442, realizing the reverse synchronous separation of the two. When the threaded screw 442 rotates counterclockwise, the two second side plates 41 move towards each other synchronously.

[0040] The movement of the second side plate 41 can synchronously drive the rotating disk 421 to move in opposite directions, thereby adjusting the winding diameter of the adjustable winding assembly 42.

[0041] Optionally, by Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown in this embodiment, the second drive mechanism 44 further includes guide rods 444; the two guide rods 444 are symmetrically fixed between the two fixed plates 441 and pass through the second side plate 41. With the above solution, during use, the movement direction of the second side plate 41 is restricted by the two guide rods 444, ensuring that the second side plate 41 can only move along the axial direction of the guide rods 444, thus avoiding deviation of the second side plate 41.

[0042] It should be noted that the pressure transmitter 34, the first servo motor 353, the wireless transmission type thin film pressure sensor 425, the second servo motor 43, and the third servo motor 443 are all commercially available conventional equipment. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0043] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0044] Components not described in detail in this article are existing technologies.

[0045] The working principle and usage process of this utility model: When in use, the reflective film winding equipment of this utility model adopts a PLC control system; Before starting the reflective film winding operation, the operator uses the human-machine interface of the PLC control system to preset the tension threshold range of the first tension detection piece, the winding tension target value of the second tension detection piece, and the initial speed and roll diameter increment coefficient of the adjustable winding assembly 42, etc., according to the material (such as PET base film, PVC base film), thickness and winding requirements of the reflective film to be wound. After the operation begins, the reflective film released by the external unwinding device first enters the transition mechanism 2. Its core function is to correct the posture of the film material and guide its conveying, eliminating any lateral deviation (such as left and right movement) that may occur during the unwinding process. Subsequently, the membrane material after the transition enters the tension adjustment mechanism 3. At this time, the first tension detection element integrated at the inlet end of the tension adjustment component collects the current tension data of the membrane material in real time and converts the analog signal into a digital signal, which is then transmitted to the PLC control system. After receiving the data, the PLC immediately compares and analyzes it with the preset tension threshold range. If the membrane tension is detected to be lower than the lower threshold (e.g., the threshold is set to 80N, but the actual measured tension is 70N), the PLC determines that the membrane is in a relaxed state and then sends an action command to the first drive mechanism 35 to drive the tension adjustment component to move downward in the vertical direction, increasing the envelope length and contact angle of the membrane in the tension adjustment mechanism 3, thereby increasing the tension of the membrane until the tension data fed back by the first tension detection component rises back to the threshold range, and the PLC controls the first drive mechanism 35 to stop operating. If the membrane tension is detected to be higher than the upper limit threshold (e.g., 90N in actual detection), the PLC determines that there is a risk of overstretching of the membrane material and immediately instructs the first drive mechanism 35 to drive the tension adjustment component to move upward, reduce the membrane material envelope length and contact angle, reduce the tension, until the tension returns to the normal range, forming a dynamic closed loop of tension adjustment. After the initial tension adjustment, the film material enters the feeding mechanism 4 for winding. During the winding process, the second tension detection element (which rotates synchronously with the adjustable winding assembly 42) integrated on the outside of the adjustable winding assembly 42 collects the tension data of the film material winding in real time and transmits the data to the PLC. The PLC compares this data with the preset winding tension target value and performs precise control of the second drive mechanism 44. If the tension fed back by the second tension detection element is higher than the target value (e.g., the target value is 100N, but the actual value is 110N), in addition to adjusting the rotation speed, the PLC can also finely adjust the winding diameter of the adjustable winding assembly 42 through the second drive mechanism 44 to reduce the extrusion force when the film is wrapped and reduce the tension. If the tension is lower than the target value, the rotation speed and pressure are adjusted in the opposite direction to ensure that the film material maintains uniform tension during the winding process, and to avoid wrinkling of the roll, misalignment between layers or stretching deformation of the film material.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is 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 reflective film winding device with tension adjustment, comprising a base (1), characterized in that, It also includes a transition mechanism (2), a tension adjustment mechanism (3) and a feeding mechanism (4) arranged sequentially on the base (1) along the conveying direction of the reflective film; The tension adjustment mechanism (3) is used to dynamically adjust the tension of the film material. It includes a tension adjustment component that can move in the vertical direction, a first tension detection element for detecting the tension of the film material, and a first drive mechanism (35) for driving the tension adjustment component to move. The first tension detection element is linked with the first drive mechanism (35) to collect film material tension data in real time. The feeding mechanism (4) is used to realize the film material winding. It includes an adjustable winding assembly (42) for winding the film material, a second tension detection element for detecting the tension of the film material during the winding process, and a second drive mechanism (44) for adjusting the winding diameter. The second tension detection element is integrated on the adjustable winding assembly (42) and is linked with the second drive mechanism (44) to collect the tension data of the film material after winding in real time.

2. The reflective film winding device with tension adjustment according to claim 1, characterized in that: The transition mechanism (2) includes a first side plate (21) and a transition roller (22); The two first side uprights (21) are symmetrically fixed to the top surface of the base (1); The transition roller (22) is rotatably mounted on the inner side of the two first side uprights (21); The axis of the transition roller (22) is perpendicular to the conveying direction of the reflective film, and is used to guide the film material smoothly into the tension adjustment mechanism (3).

3. The reflective film winding device with tension adjustment according to claim 1, characterized in that: The tension adjustment assembly includes a lifting seat (31), a bearing seat (32), and a tension adjustment roller (33), and the first tension detection element is a pressure transmitter (34). The two lifting seats (31) are symmetrically distributed and can be lifted and lowered above the base (1) via the first drive mechanism (35). An installation port (311) is provided on the lifting seat (31). The bearing housing (32) is installed in the mounting port (311); The tension adjusting roller (33) is rotatably disposed between the two bearing seats (32); The pressure transmitter (34) is sandwiched between the inner top surface of the mounting port (311) and the bearing seat (32) to convert the pressure of the film material on the tension regulating roller (33) into a tension electrical signal.

4. The reflective film winding device with tension adjustment according to claim 3, characterized in that: The first drive mechanism (35) includes an internally threaded tube (351), a threaded column (352), a first servo motor (353), an active synchronous pulley (354), a driven synchronous pulley (355), an active synchronous belt (356), a linkage synchronous pulley (357), and a linkage synchronous belt (358). The internally threaded tube (351) is fixed to the bottom surface of the lifting seat (31), and the internally threaded tube (351) has an internal thread; The threaded column (352) is rotatably mounted on the top surface of the base (1) and threadedly engaged with the internal threaded tube (351); The first servo motor (353) is fixed to the top surface of the base (1), and the active synchronous wheel (354) is fixed to the output shaft of the first servo motor (353); The driven synchronous pulley (355) is fixed on the threaded post (352), and the driving synchronous belt (356) is tensioned with the driving synchronous pulley (354) through the driven synchronous pulley (355); A linkage timing pulley (357) is fixed on each of the two threaded posts (352), and the linkage timing belt (358) is tensioned by the two linkage timing pulleys (357).

5. A reflective film winding device with tension adjustment according to claim 3, characterized in that: The tension adjustment mechanism (3) also includes a guide block (36) and a guide column (37). The two guide blocks (36) are symmetrically fixed at both ends of the lifting seat (31), and the guide column (37) is fixed to the top surface of the base (1) and passes through the guide block (36).

6. The reflective film winding device with tension adjustment according to claim 1, characterized in that: It also includes a second side plate (41) and a second servo motor (43); Two second side uprights (41) are symmetrically distributed and movably disposed on the top of the base (1), and the adjustable winding assembly (42) is rotatably disposed between the two second side uprights (41); The second servo motor (43) is fixed to the outer side of the second side plate (41) and is used to drive the adjustable winding assembly (42) to rotate in order to wind up the film material.

7. A reflective film winding device with tension adjustment according to claim 6, characterized in that: The adjustable winding assembly (42) includes a rotating disk (421), a mounting shaft (422), an arc-shaped inner support plate (423), and a flip support arm (424). The second tension detection element is a wireless transmission type thin film pressure sensor (425). The two rotating disks (421) are symmetrically distributed, and the mounting shaft (422) is fixed to the outer side of the rotating disk (421) and rotatably connected to the second side plate (41); Multiple arc-shaped inner support plates (423) are distributed at equal intervals along the circumferential direction; The two sets of the flip support arms (424) are symmetrically distributed, and one end of the flip support arm (424) is hinged to the arc-shaped inner support plate (423) and the other end is hinged to the corresponding rotating disk (421); The wireless transmission type thin film pressure sensor (425) is attached to the outer wall of the arc-shaped inner support plate (423) and is used to detect the contact pressure between the film material and the arc-shaped inner support plate (423) during the winding process; The second drive mechanism (44) is used to drive the two second side plates (41) to move toward each other or in opposite directions.

8. A reflective film winding device with tension adjustment according to claim 7, characterized in that: The second drive mechanism (44) includes a fixed plate (441), a threaded screw (442), and a third servo motor (443). The two fixing plates (441) are symmetrically fixed to the top surface of the base (1); The threaded screw (442) is rotatably mounted between the two fixed plates (441), and the two second side plates (41) respectively engage with the two reverse threads of the threaded screw (442); The third servo motor (443) is fixed to the outer wall of the fixed plate (441) and is used to drive the threaded screw (442) to rotate.

9. A reflective film winding device with tension adjustment according to claim 8, characterized in that: The second drive mechanism (44) also includes a guide rod (444). The two guide rods (444) are symmetrically fixed between the two fixing plates (441) and pass through the second side plate (41).

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