Bubble-free winding device capable of efficiently changing rolls

Abstract

The invention relates to the field of material winding processing, in particular to an efficient roll changing bubble-free winding device which comprises a rack, a self-adaptive positioning and cutting mechanism and a roll changing and winding mechanism. The self-adaptive positioning cutting mechanism comprises a positioning cutting assembly and a self-adaptive sliding assembly. The positioning cutting assembly comprises a pressing roller, a movable cutting knife, an abutting wheel and a pressing roller driving piece. The roll changing and winding mechanism comprises a rotation driving assembly and four winding rollers. The winding rollers sequentially rotate to the winding station from the replacement station, when the winding rollers of the replacement station rotate by 90 degrees to the winding station and abut against the adhesive film together with the pressing roller, the movable cutting knife turns over downwards and cuts the adhesive film, the pressing roller drives the winding rollers of the winding station to rotate reversely, the notch end of the adhesive film is completely attached to winding drum cores of the winding rollers, and the adhesive film is cut. And then the compression roller drives the wind-up roller to rotate in the forward direction for wind-up. According to the device, automatic roll changing and rolling are achieved, and meanwhile it can be guaranteed that the problems of wrinkling and bubbles of the adhesive film in the rolling process of the notch end of the adhesive film are avoided.

Description

Technical Field

[0001] This application relates to the field of material winding and processing, and in particular to a bubble-free winding device for efficient roll changing. Background Technology

[0002] In the field of material winding, especially in adhesive film processing, adhesive films are playing an increasingly important role in numerous industries such as electronics (3C products), packaging, and chemical materials, driven by continuous industrial development. Adhesive films come in a wide variety of types, including inorganic silicon films and organic films, each with its own characteristics to meet the diverse needs of different industries. Adhesive film processing production lines encompass multiple stages, including adhesive application, curing, slow-release winding, roll changing, and rewinding. The entire process must be continuous, without downtime, and the adhesive film must always be kept taut to ensure normal production and stable product quality. Roll changing and rewinding, as a crucial link, is of great significance for achieving efficient production, avoiding interruptions in the winding process, and ensuring production continuity.

[0003] To achieve continuous roll changing, conventional roll changing and winding devices typically employ a roll changing and winding mechanism and a cutting mechanism. The roll changing and winding mechanism generally consists of a rotating disk and multiple winding rollers arranged around it. Each winding roller has an independent drive unit to rotate, and the rollers are designed to be detachable for easy removal of the wound product and installation of the roll core. The rotating disk drives the winding rollers to switch between the replacement station and the winding station, allowing the film to be wound onto the roll core at the winding station. The cutting mechanism is slidable and used to cut the film between the winding station and the replacement station. During roll changing, to ensure curing effect and adhesive continuity while maintaining film tension, manual assistance is required to pull the cut end of the film from the winding station to the winding roller at the next replacement station and attach it to the outer circumference of the rotating winding roller to begin a new round of winding.

[0004] Existing roll changing and rewinding devices have significant shortcomings. They heavily rely on manual assistance to transfer the film during roll changing, making automated roll changing impossible. Manual operation has a high error rate, easily leading to accidental loosening of the film's cut end, resulting in film accumulation in the previous process. Furthermore, when manually transferring the film's cut end, because the rewinding roller is rotating, it is difficult for operators to quickly and smoothly adhere the film's cut end to the roll surface of the replacement roller, causing wrinkles and air bubbles to form between the film and the roll core during rewinding. This results in poor rewinding performance and an unsatisfactory appearance of the wound product, failing to meet the demands of the high-end film market. Summary of the Invention

[0005] In order to achieve automatic transfer of film for roll changing and rewinding, and to ensure that the film does not wrinkle or generate air bubbles between the film and the roll core during the rewinding process at the cut end, this application provides a high-efficiency, bubble-free rewinding device.

[0006] This application provides a high-efficiency, bubble-free winding device for roll changing, including a frame and an adaptive positioning cutting mechanism and a roll changing and winding mechanism disposed on the frame. The adaptive positioning cutting mechanism includes a positioning cutting component and an adaptive sliding component. The positioning cutting component includes a pressure roller, a movable cutting blade flipped above the pressure roller, an abutting wheel abutting against the bottom of the pressure roller, and a pressure roller drive component for driving the pressure roller to rotate. A gap is provided between the abutting wheel and the pressure roller for film to pass through. The roll changing and winding mechanism includes a rotation drive component and four winding rollers arranged in a square. The rotation drive component drives each winding roller to rotate sequentially from the replacement station to the winding station for winding. The take-up rollers at the take-up station respectively abut against both sides of the film. After the take-up is completed according to the preset take-up length, the take-up roller at the take-up station rotates 90° to the transition station. When the take-up roller at the replacement station rotates 90° to the take-up station and abuts against the film together with the pressure roller, the movable cutting blade flips downward and cuts the film between the take-up station and the transition station. The pressure roller drives the take-up roller at the take-up station to rotate in the opposite direction, so that the cut end of the film is completely in close contact with the roll core of the take-up roller. Then the pressure roller drives the take-up roller at the take-up station to rotate in the forward direction to achieve take-up. The adaptive sliding component is used to automatically adjust the distance between the positioning cutting component and the roll changing and take-up mechanism so that the pressure roller is always in contact with the film at the take-up station.

[0007] By adopting the above technical solution, the adaptive positioning cutting mechanism and the roll changing and winding mechanism work together to enable the winding device to automatically complete the roll changing and winding work without the need for manual assistance in transferring the film. During the roll changing process, under the control of the winding device's control system, after winding to the preset winding length, the winding roller at the winding station can automatically rotate to the transition station, and the winding roller at the replacement station can automatically rotate to the winding station and abut against the film together with the pressure roller. At this time, the movable cutting blade is controlled to flip downward and move horizontally to cut the film. After cutting, the pressure roller immediately drives the winding roller at the winding station to rotate in the opposite direction at a certain angle. The tension and pressure generated by the reverse rotation cause the cut end of the film, which was originally suspended vertically at the bottom of the winding roller, to fit tightly against the roll core of the winding roller, realizing the function of automatic film transfer, roll changing and winding, eliminating the problem of accidental loosening of the cut end of the film that may be caused by manual assistance. Moreover, this bonding method is flatter than manual bonding and reduces the wrinkling and air bubbles of the film during the winding process. Meanwhile, the adaptive sliding component can automatically adjust the distance between the positioning cutting component and the rewinding mechanism according to the working status of the rewinding mechanism, so that the pressure roller is always in contact with the film at the rewinding station, ensuring the tension and stable transmission of the film during the rewinding process, further improving the rewinding effect, making the rewound products more aesthetically pleasing, and enhancing the applicability of the rewinding device in the high-end film market.

[0008] Preferably, the positioning and cutting assembly further includes a support frame, the pressure roller and the abutment wheel are both disposed on the support frame, the pressure roller drive is disposed on the support frame, and the adaptive sliding assembly drives the support frame to slide back and forth.

[0009] By adopting the above technical solution, the pressure roller, abutment roller, and pressure roller drive are all mounted on the support frame, forming an integrated structure. When the adaptive sliding component drives the support frame to slide back and forth, it can drive the pressure roller, abutment roller, and pressure roller drive to move synchronously, thereby automatically adjusting the distance between the positioning and cutting component and the winding mechanism. Specifically, as the diameter of the film wound by the winding roller at the winding station increases, the film can push the pressure roller to move away from the winding roller. After the empty winding roller at the replacement station rotates to the winding station, the adaptive sliding component can drive the pressure roller to move closer to the winding roller, and together with the empty winding roller, abut the film. In this way, it can be ensured that the pressure roller is always in contact with the film at the winding station, realizing the adaptive adjustment of the device to different working conditions and ensuring the stability and continuity of the winding process.

[0010] Preferably, the adaptive sliding component includes a guide rail and a sliding drive component, the frame is provided with the guide rail, and the sliding drive component drives the support frame to slide along the guide rail.

[0011] By adopting the above technical solution, the adaptive sliding component is equipped with a guide rail mounted on the frame, and the sliding drive component can drive the support frame to slide along the guide rail. In this way, the distance between the positioning and cutting component and the roll changing and winding mechanism can be automatically adjusted according to the change of the winding station, so that the pressure roller is always in contact with the film at the winding station, ensuring the stable operation of the winding device.

[0012] Preferably, the movable cutting blade is rotatably mounted on the support frame via a flipping structure. The flipping structure includes a rotating shaft, a slide rail, and a gear rotating component. The rotating shaft, the slide rail, and the pressure roller shaft are parallel. The slide rail is fixedly mounted directly above the rotating shaft. The gear rotating component drives the rotating shaft to rotate, causing the slide rail to flip around the rotating shaft. The movable cutting blade is slidably mounted on the slide rail.

[0013] By adopting the above technical solution, since the rotating shaft, slide rail and pressure roller shaft are parallel, and the slide rail is fixedly set directly above the rotating shaft, when the gear rotating component drives the rotating shaft to rotate, it can drive the slide rail fixed to it to rotate around the rotating shaft. Since the movable cutting blade is slidably set on the slide rail, the rotation of the slide rail will cause the movable cutting blade to rotate together, thereby enabling the movable cutting blade to rotate downward to cut the film between the winding station and the transition station, thus achieving the purpose of precise film cutting.

[0014] Preferably, the gear rotating component includes a rack, a gear, and a cylinder. The rotating shaft is fixedly connected to the gear, the rack meshes with the gear, and the cylinder drives the rack to move vertically, thereby causing the gear to rotate in the forward or reverse direction.

[0015] By adopting the above technical solution, since the rotating shaft is fixedly connected to the gear and the rack meshes with the gear, when the cylinder drives the rack to move vertically, according to the meshing transmission principle of the gear and rack, the linear motion of the rack can drive the gear meshing with it to rotate in the forward or reverse direction, thereby causing the rotating shaft to rotate, thus driving the slide rail to rotate around the rotating shaft, so as to drive the movable cutting blade to rotate downward to cut the film between the winding station and the transition station, providing a stable and reliable driving method for the film cutting operation.

[0016] Preferably, the slide rail is fixedly connected to the rotating shaft via a support frame.

[0017] By adopting the above technical solution, the slide rail and the rotating shaft are fixedly connected by a support frame. On the one hand, this ensures the stability of the connection between the two, preventing the slide rail from becoming loose or shifting relative to the rotating shaft during equipment operation, and ensuring that the slide rail maintains a stable posture when it rotates with the rotating shaft. On the other hand, this stable connection method ensures that when the rotating shaft is driven by the gear rotating component, the rotating shaft can accurately drive the slide rail to rotate smoothly around it, thereby driving the movable cutting blade slidably set on the slide rail to complete the rotation action smoothly, so as to achieve precise cutting of the film between the winding station and the transition station, which helps to improve the working reliability and cutting accuracy of the entire winding device.

[0018] Preferably, there are four abutment wheels, and the four rotatable abutment wheels are horizontally arranged at the bottom of the pressure roller.

[0019] By adopting the above technical solution, setting the number of abutment rollers to four and horizontally positioned at the bottom of the pressure roller allows the four abutment rollers to jointly apply a stable and uniform supporting force to the film as it passes through the gap between them. Because they are arranged horizontally, each abutment roller can act on the film from different positions. This uniform force distribution helps reduce uneven local stress on the film during transport, thus better ensuring the flatness of the film during transport and preventing wrinkles. Simultaneously, uniform support also helps ensure stable transport of the film between the abutment rollers and the pressure roller, especially after the film is cut, as it helps to press the film down and prevent slippage.

[0020] Preferably, the positioning and cutting assembly further includes a guide roller, which is disposed on the support frame and located obliquely above the feed end of the pressure roller, and the adhesive film moves from the top of the guide roller to the bottom of the pressure roller.

[0021] By adopting the above technical solution, a guide roller is installed on the support frame, diagonally above the feed end of the pressure roller. The film moves from the top of the guide roller to the bottom of the pressure roller. Because the guide roller is positioned diagonally above the feed end of the pressure roller, the film can change its direction of travel before entering the pressure roller, avoiding the jamming or offset problems that may occur if the film enters the pressure roller directly at its original angle. At the same time, this arrangement can guide and tension the film, allowing it to enter the gap between the pressure roller and the abutment roller more smoothly and steadily, thereby improving the stability and winding quality of the film during the winding process.

[0022] Preferably, the rotation drive assembly includes a rotation shaft, rotating disks fixedly disposed on both sides of the rotation shaft, and a rotation drive component for driving the rotation shaft to rotate. The four take-up rollers are detachably disposed between two of the rotating disks, and both sides of the rollers are rotatably disposed on the rotating disks.

[0023] By adopting the above technical solution, the rotating drive unit drives the rotating shaft to rotate. Since the rotating disk is fixedly set on both sides of the rotating shaft, the rotation of the rotating shaft will drive the rotating disk to rotate. Since the four take-up rollers can be detachably set between the two rotating disks and are rotatably set on both sides of the rotating disk, the rotation of the rotating disk can drive each take-up roller to rotate from the replacement station to the take-up station in sequence for take-up, realizing the switching of the take-up roller station, ensuring the continuity of roll changing and take-up, and helping to improve production efficiency.

[0024] Preferably, both sides of the four take-up rollers are detachably connected to the rotating disk via locking cylinders. Both sides of the take-up rollers are provided with through holes. The locking cylinders are fixedly mounted on the rotating disk and drive their piston rods to extend into or retract from the through holes.

[0025] By adopting the above technical solution, since through holes are provided on both sides of the four take-up rollers and a locking cylinder is fixedly installed on the rotating disk, when it is necessary to disassemble the take-up rollers, the locking cylinder drives the piston rod to retract out of the through hole, thereby disengaging the take-up rollers from the rotating disk and facilitating the removal of the wound products from the take-up rollers; when it is necessary to install the take-up rollers, the take-up rollers are placed in a suitable position, and the locking cylinder drives the piston rod to extend into the through hole, thereby connecting the take-up rollers to the rotating disk and completing the installation of the take-up rollers. This facilitates the installation of the roll core onto the empty take-up rollers, thus achieving a detachable connection between the take-up rollers and the rotating disk, and facilitating the disassembly and installation of the take-up rollers.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The adaptive positioning cutting mechanism and the roll changing and rewinding mechanism work together. After completing the preset rewinding length, the rewinding roller at the rewinding station rotates to the transition station, and the rewinding roller at the replacement station rotates to the rewinding station. The moving cutter automatically cuts the film. Since the pressure roller and the rewinding roller at the rewinding station provide contact with the film, the cut end of the film can fall into the rewinding roller at the rewinding station. Then, the pressure roller drives the rewinding roller at the rewinding station to rotate in the opposite direction. Under the action of the reverse rotation, the cut end of the film can gradually and smoothly adhere to the core of the rewinding roller, so that the cut end of the film is completely in close contact with the core of the rewinding roller. This avoids wrinkling of the film and air bubbles between the film and the core during the film rewinding process, improving the rewinding effect. The entire process does not require manual transfer of the film, realizing automated roll changing, reducing the error rate of manual operation, and avoiding accidental loosening of the cut end of the film, which would cause film accumulation in the previous process. 2. As the position of the take-up roller in the roll changing and rewinding mechanism changes, the adaptive sliding component automatically adjusts the distance between the positioning and cutting component and the roll changing and rewinding mechanism, so that the pressure roller is always in contact with the film at the take-up station, thereby ensuring that the film is always in a taut state, ensuring the consistency of curing effect and the continuity of adhesive application. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the bubble-free rewinding device for efficient roll changing in this application; Figure 2 This is a front view of the bubble-free rewinding device for efficient roll changing according to this application; Figure 3 yes Figure 2 AA cross-section view; Figure 4 This is a structural diagram of the pressure roller of the bubble-free rewinding device for high-efficiency roll changing in this application; Figure 5 This is a structural diagram of the flipping structure of the bubble-free rewinding device for efficient roll changing in this application; Figure 6 This is an exploded view of the rewinding mechanism of the bubble-free rewinding device for efficient rewinding in this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Adaptive positioning and cutting mechanism; 3. Roll changing and rewinding mechanism; 21. Positioning and cutting assembly; 22. Adaptive sliding assembly; 23. Guide roller; 211. Pressure roller; 212. Moving cutting blade; 213. Abutment wheel; 214. Pressure roller drive component; 215. Support frame; 216. Tilting structure; 2161. Rotating shaft; 2162. Slide rail; 2163. Gear rotating component; 2164. Support frame; 2163a. ​​Rack; 2163b. Gear; 2163c. Cylinder; 221. Guide rail; 222. Sliding drive component; 31. Rotation drive assembly; 32. Rewinding roller; 33. Locking cylinder; 311. Rotating shaft; 312. Rotating disk; 313. Rotation drive component; 321. Through hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] This application provides an efficient, bubble-free winding device for roll changing, referring to... Figure 1 and Figure 2 The system includes a frame 1, an adaptive positioning and cutting mechanism 2, and a roll-changing and rewinding mechanism 3. Both the adaptive positioning and cutting mechanism 2 and the roll-changing and rewinding mechanism 3 are mounted on the frame 1 and work together under the program control of the control system. The adaptive positioning and cutting mechanism 2 accurately cuts the film and automatically adjusts its position, while the roll-changing and rewinding mechanism 3 enables the rewinding roller 32 to switch between different positions. Their close cooperation achieves automatic roll changing and bubble-free rewinding. This is because the adaptive positioning and cutting mechanism 2 accurately cuts the film and properly handles the cut end, ensuring it fits smoothly against the rewinding roller 32, while the roll-changing and rewinding mechanism 3 smoothly completes the position switching of the rewinding roller 32, guaranteeing the continuity and stability of the rewinding process.

[0031] Reference Figure 2 and Figure 3 Specifically, in this embodiment, the adaptive positioning and cutting mechanism 2 includes a positioning and cutting component 21, an adaptive sliding component 22, and a guide roller 23. The positioning and cutting component 21 is used to provide the driving force for winding and for cutting the film. The adaptive sliding component 22 is used to drive the positioning and cutting component 21 closer to or further away from the winding and changing mechanism 3. The guide roller 23 is used to guide the film from the discharge end of the deceleration device in the previous process to the positioning and cutting component 21.

[0032] Reference Figure 3 and Figure 4The positioning and cutting assembly 21 comprises a pressure roller 211, a movable cutting blade 212, abutment wheels 213, a pressure roller drive component 214 for driving the pressure roller 211, and a support frame 215. The pressure roller 211, abutment wheels 213, and guide roller 23 are all mounted on the support frame 215. The pressure roller drive component 214 is mounted on the support frame 215. The movable cutting blade 212 is rotated and positioned above the pressure roller 211. There are four abutment wheels 213, all horizontally positioned at the bottom of the pressure roller 211 and working together with the pressure roller 211 to abut against the adhesive film. A gap is formed between the abutment wheels 213 and the pressure roller 211, allowing the adhesive film to pass through. The pressure roller 211 is made of rubber, possessing a certain degree of elasticity and friction, facilitating the movement of the adhesive film and reducing damage to the film surface. The pressure roller drive component 214 is a servo motor, mounted on the support frame 215. Its output end is fixedly connected to the shaft of the pressure roller 211, driving the pressure roller 211 to rotate forward or backward around its horizontal axis. The servo motor can precisely control the speed and direction of the pressure roller 211, which is crucial for ensuring the speed and tension of the film winding. The abutment rollers 213 are made of soft rubber, which better grips the film when engaging with the pressure roller 211, while reducing damage to the film. All four abutment rollers 213 are mounted on a base that rotates around a horizontal axis, and the base is mounted on the support frame 215. The gap between the abutment rollers 213 and the pressure roller 211 is moderate, ensuring smooth film passage while applying sufficient pressure to maintain winding tension. The gap can be adjusted according to the thickness and material of the film.

[0033] Reference Figure 3 and Figure 5 The movable cutting blade 212 is rotatably mounted on the support frame 215 via a flipping structure 216. The flipping structure 216 includes a rotating shaft 2161, a slide rail 2162, two gear rotating parts 2163 located on both sides of the rotating shaft 2161, and a support frame 2164. The rotating shaft 2161 is made of high-strength alloy steel, which has high strength and toughness, ensuring that it will not deform during frequent rotation. The rotating shaft 2161 is horizontally mounted on the support frame 215 via bearings and is located directly above the pressure roller 211, ensuring its flexible rotation. The slide rail 2162 is made of aluminum alloy, which is lightweight and high-strength, reducing the weight of the entire flipping structure 216 while maintaining its strength. The slide rail 2162 is fixedly mounted above the rotating shaft 2161 via the support frame 2164, which provides a stable connection and is fixed by welding or bolting. Two gears 2163 jointly drive the rotating shaft 2161 to rotate, causing the slide rail 2162 to rotate around the rotating shaft 2161. The movable cutting blade 212 is driven by the cylinder 2163c to move horizontally back and forth along the slide rail 2162.

[0034] Each rotating gear component 2163 consists of a rack 2163a, a gear 2163b, and a cylinder 2163c. The rotating shaft 2161 is fixedly connected to the gear 2163b. The rack 2163a meshes with the gear 2163b. The cylinder 2163c drives the rack 2163a to move vertically, causing the rack 2163a to drive the gear 2163b to rotate in either the forward or reverse direction. When cutting the adhesive film, the cylinder 2163c pushes the rack 2163a to move, causing the rack 2163a to drive the gear 2163b to rotate, which in turn causes the rotating shaft 2161 to rotate. The slide rail 2162 then rotates around the rotating shaft 2161, causing the movable cutting blade 212 to rotate downwards and approach the adhesive film.

[0035] The adaptive sliding assembly 22 includes two guide rails 221 and two sliding drive components 222. Both guide rails 221 are fixedly mounted on the frame 1, and the two sliding drive components 222 jointly drive the support frame 215 to slide along the guide rails 221. The guide rails 221 are linear guide rails, which have high precision and ensure smooth reciprocating movement of the support frame 215. The sliding drive component 222 is a cylinder 2163c, which pushes the support frame 215 to move on the guide rails 221 via a piston rod.

[0036] The guide roller 23 is rotatably mounted on the support frame 215 at both ends via bearings. The guide roller 23 is parallel to the pressure roller 211 and located obliquely above the feed end of the pressure roller 211. The adhesive film moves from the top of the guide roller 23 to the bottom of the pressure roller 211. The function of the guide roller 23 is to guide the direction of the adhesive film, so that the adhesive film can smoothly enter between the pressure roller 211 and the abutment roller 213.

[0037] Reference Figure 1 and Figure 6 Specifically, in this embodiment, the winding and rewinding mechanism 3 includes a rotation drive assembly 31 and four rewinding rollers 32 arranged in a square. The rotation drive assembly 31 includes a rotation shaft 311, rotating disks 312 fixedly disposed on both sides of the rotation shaft 311, and a rotation drive component 313 that drives the rotation shaft 311. The rotation shaft 311 is a solid carbon steel shaft with sufficient strength to withstand the weight of the rewinding rollers 32 and the torque during rotation. The rotation drive component 313 is a conventional motor-reducer combination; the motor provides power, and the reducer lowers the rotational speed and increases the torque, ensuring that the rotation shaft 311 can rotate smoothly.

[0038] The four take-up rollers 32 are detachably mounted between the two rotating disks 312 at both ends via locking cylinders 33, allowing each roller to rotate around its horizontal axis. Specifically, each of the four take-up rollers 32 has a through hole 321 on both sides. The locking cylinder 33 is fixedly mounted on the rotating disk 312, and its piston rod extends into or retracts from the through hole 321. When the piston rod extends into the through hole 321, the take-up roller 32 rotates around the piston rod. When the take-up roller 32 has completed its winding operation and needs to be removed, the piston rod of the locking cylinder 33 retracts, allowing the take-up roller 32 to be removed from the rotating disk 312 and a new roll core to be fitted onto it. When installing the take-up roller 32, it is positioned, and the piston rod of the locking cylinder 33 extends and inserts into the through hole 321, rotatably mounting the take-up roller 32 onto the rotating disk 312. In this embodiment, the pressure roller 211 is an actively rotating roller, while the four take-up rollers 32 are all passive rollers and need to cooperate with the pressure roller 211 to achieve self-rotation for winding.

[0039] During operation, the rotation drive assembly 31 drives each take-up roller 32 to rotate sequentially from the replacement station to the take-up station for winding. The pressure roller 211 and the take-up roller 32 at the take-up station respectively abut against both sides of the film. The pressure roller 211 drives the take-up roller 32 to rotate forward to achieve winding. After winding is completed according to the preset winding length, the control system controls the rotation drive assembly 313 to drive the take-up roller 32 at the take-up station to rotate 90° to the transition station. The take-up roller 32 at the replacement station rotates 90° to the take-up station and abuts against the film together with the pressure roller 211. During this process, the control drive support frame 215 drives the pressure roller 211 to slide to adapt to the distance between the pressure roller 211 and the take-up roller 32 at the take-up station, so that the pressure roller 211 always abuts against the film together with the take-up roller 32 at the take-up station. Then, the control rotates the rotating shaft 2161 to rotate, causing the movable cutter 212 to flip downward and approach the film, reaching the film. After the cutting position is reached, the movable cutting blade 212 is controlled to move horizontally to cut the film between the winding station and the transition station. The film naturally falls onto the winding roller 32 of the winding station. When the film cutting action is completed, the pressure roller drive 214 is controlled to drive the pressure roller 211 to drive the winding roller 32 of the winding station to rotate in the opposite direction, so that the cut end of the film is completely in close contact with the roll core of the winding roller 32. Since the side of the film close to the winding roller 32 is sticky, it can achieve close contact. Then, the pressure roller 211 is driven to drive the winding roller 32 of the winding station to rotate in the forward direction, so that the winding roller 32 of the winding station can perform winding.

[0040] The implementation principle of this embodiment is as follows: The high-efficiency roll-changing bubble-free winding device of this embodiment achieves automatic roll changing and bubble-free winding through the coordinated operation of the adaptive positioning cutting mechanism 2 and the roll-changing winding mechanism 3. The positioning cutting component 21 in the adaptive positioning cutting mechanism 2 can accurately cut the film, and the tension of the film is ensured by the cooperation of the pressure roller 211 and the abutment wheel 213. The design of the movable cutting blade 212 makes the cutting process more flexible and accurate. The adaptive sliding component 22 can automatically adjust the position of the positioning cutting component 21 to ensure that the pressure roller 211 is always in contact with the film at the winding station. The rotation drive component 31 in the roll-changing winding mechanism 3 can drive the winding roller 32 to switch between different stations. The four winding rollers 32 arranged in a square make the roll-changing process more efficient. The detachable connection between the winding roller 32 and the rotating disk 312 facilitates the replacement of the core on the winding roller 32 and the collection of the wound product. The entire device avoids errors and air bubble problems caused by manual operation, improves production efficiency and product quality, meets the needs of the high-end film market, and is a major improvement over existing technology.

[0041] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-efficiency, bubble-free winding device for roll changing, characterized in that, The system includes a frame (1) and an adaptive positioning and cutting mechanism (2) and a roll changing and rewinding mechanism (3) disposed on the frame (1). The adaptive positioning and cutting mechanism (2) includes a positioning and cutting component (21) and an adaptive sliding component (22). The positioning and cutting component (21) includes a pressure roller (211), a movable cutting blade (212) flipped above the pressure roller (211), an abutting wheel (213) abutting the bottom of the pressure roller (211), and a pressure roller drive component (214) that drives the pressure roller (211) to rotate. A gap is provided between the abutting wheel (213) and the pressure roller (211) for the film to pass through. The roll changing and rewinding mechanism (3) includes a rotation drive component (31) and four rewinding rollers (32) arranged in a square. The rotation drive component (31) drives each of the rewinding rollers (32) to rotate sequentially from the replacement station to the rewinding station for rewinding. The pressure roller (211) and the take-up roller (32) of the take-up station respectively abut against both sides of the film. After the take-up is completed according to the preset take-up length, the take-up roller (32) of the take-up station rotates 90° to the transition station. When the take-up roller (32) of the replacement station rotates 90° to the take-up station and abuts against the film together with the pressure roller (211), the movable cutter (212) flips downward and cuts the film between the take-up station and the transition station. 11) Drive the take-up roller (32) of the take-up station to rotate in the opposite direction so that the cut end of the film is completely in close contact with the core of the take-up roller (32). Then the pressure roller (211) drives the take-up roller (32) of the take-up station to rotate in the forward direction to achieve take-up. The adaptive sliding component (22) is used to automatically adjust the distance between the positioning cutting component (21) and the roll changing and take-up mechanism (3) so that the pressure roller (211) is always in contact with the film of the take-up station.

2. The high-efficiency, bubble-free winding device for changing rolls according to claim 1, characterized in that, The positioning and cutting assembly (21) also includes a support frame (215), the pressure roller (211) and the abutment wheel (213) are both disposed on the support frame (215), the pressure roller drive (214) is disposed on the support frame (215), and the adaptive sliding assembly (22) drives the support frame (215) to slide back and forth.

3. The high-efficiency, bubble-free winding device for changing rolls according to claim 2, characterized in that, The adaptive sliding component (22) includes a guide rail (221) and a sliding drive (222). The frame (1) is provided with the guide rail (221), and the sliding drive (222) drives the support frame (215) to slide along the guide rail (221).

4. The high-efficiency, bubble-free winding device for changing rolls according to claim 2, characterized in that, The movable cutting blade (212) is rotatably mounted on the support frame (215) via a flipping structure (216). The flipping structure (216) includes a rotating shaft (2161), a slide rail (2162), and a gear rotating component (2163). The rotating shaft (2161), the slide rail (2162), and the pressure roller (211) are parallel to each other. The slide rail (2162) is fixedly mounted directly above the rotating shaft (2161). The gear rotating component (2163) drives the rotating shaft (2161) to rotate, thereby causing the slide rail (2162) to flip around the rotating shaft (2161). The movable cutting blade (212) is slidably mounted on the slide rail (2162).

5. The high-efficiency, bubble-free winding device for changing rolls according to claim 4, characterized in that, The gear rotating component (2163) includes a rack (2163a), a gear (2163b), and a cylinder (2163c). The rotating shaft (2161) is fixedly connected to the gear (2163b). The rack (2163a) meshes with the gear (2163b). The cylinder (2163c) drives the rack (2163a) to move vertically, thereby causing the gear (2163b) to rotate in the forward or reverse direction.

6. The high-efficiency, bubble-free winding device for changing rolls according to claim 4, characterized in that, The slide rail (2162) is fixedly connected to the rotating shaft (2161) via a support frame (2164).

7. The high-efficiency, bubble-free winding device for changing rolls according to claim 1, characterized in that, There are four abutment wheels (213), and the four rotatable abutment wheels (213) are horizontally arranged at the bottom of the pressure roller (211).

8. The high-efficiency, bubble-free winding device for changing rolls according to claim 2, characterized in that, The positioning and cutting assembly (21) also includes a guide roller (23), which is disposed on the support frame (215) and located obliquely above the feed end of the pressure roller (211). The adhesive film moves from the top of the guide roller (23) to the bottom of the pressure roller (211).

9. The high-efficiency, bubble-free winding device for changing rolls according to claim 1, characterized in that, The rotation drive assembly (31) includes a rotation shaft (311), a rotating disk (312) fixedly disposed on both sides of the rotation shaft (311), and a rotation drive component (313) for driving the rotation shaft (311) to rotate. The four take-up rollers (32) can be detachably disposed between the two rotating disks (312), and both sides of them are rotatably disposed on the rotating disks (312).

10. The high-efficiency, bubble-free winding device for changing rolls according to claim 9, characterized in that, The four take-up rollers (32) are detachably connected to the rotating disk (312) on both sides by locking cylinders (33). Each take-up roller (32) has a through hole (321) on both sides. The locking cylinder (33) is fixedly installed on the rotating disk (312) and drives its piston rod to extend into or retract from the through hole (321).

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