Pull tape winding device and high-precision roll-to-roll flexible electronic printing equipment

Abstract

The application belongs to the technical field of conductive circuit printing, and particularly relates to a pull tape winding device and high-precision roll-to-roll flexible electronic printing equipment. The pull tape winding device is used for pulling and recycling film materials in a conveying process. The pull tape winding device comprises a winding structure, a pulling structure and a tension adjusting structure. The winding structure and the pulling structure are arranged at intervals. The pulling structure is used for conveying the film materials to be wound towards the winding structure. The winding structure is used for winding and recycling the film materials. The tension adjusting structure is arranged between the pulling structure and the winding structure. The film materials pass through the tension adjusting structure. The tension adjusting structure is used for increasing or decreasing the tension of the film materials in the conveying process, so as to keep the tension of the film materials in the conveying process within a preset range. The application can solve the problems of how to improve the winding efficiency and how to improve the stability of the tension of the film materials.

Description

Technical Field

[0001] This invention belongs to the field of conductive circuit printing technology, and particularly relates to a tape winding device and a high-precision roll-to-roll flexible electronic printing equipment. Background Technology

[0002] In roll-to-roll flexible electronic printing equipment, conductive ink is typically printed onto a flexible substrate using a coating transfer structure. One step in this process involves a drying unit to heat and cure the conductive ink, ensuring the circuitry is firmly bonded to the film. The drying unit also ensures the conductive ink is cured evenly, preventing cracking and breakage, and maintaining consistent line material.

[0003] However, in existing roll-to-roll flexible electronic printing equipment, the film material has low winding efficiency after being heated and cured by the drying unit. Furthermore, the tension of the film material during winding is entirely determined by the traction force of the winding motor, making it difficult to control the consistency of the film material tension. If the tension increases, it can easily lead to the film material tearing, while if the tension decreases, the film material becomes too loose. Summary of the Invention

[0004] The purpose of this application is to provide a pull-belt winding device and a high-precision roll-to-roll flexible electronic printing equipment, aiming to solve the problems of how to improve winding efficiency and the stability of film tension.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, a belt winding device is provided for traction and recovery of film material during the conveying process. The belt winding device includes a winding structure, a traction structure, and a tension adjusting structure. The winding structure and the traction structure are spaced apart. The traction structure is used to traction the film material to be wound toward the winding structure. The winding structure is used to wind and recover the film material. The tension adjusting structure is located between the traction structure and the winding structure. The film material passes through the tension adjusting structure. The tension adjusting structure is used to maintain the tension of the film material within a preset range during the conveying process.

[0007] In some embodiments, the traction structure includes a traction roller and a driven roller spaced apart from each other and rotatable about their respective axes, the film material passing through the gap between the traction roller and the driven roller and being held between the traction roller and the driven roller, and the traction structure further includes a first drive member for driving the traction roller to rotate in order to traction the film material to move.

[0008] In some embodiments, the traction structure further includes a first support frame, a mounting block, and a second drive member. The traction roller is rotatably mounted on the first support frame, the driven roller is rotatably mounted on the mounting block, the mounting block is slidably connected to the first support frame, and the output end of the second drive member is connected to the mounting block to drive the mounting block and the driven roller to move toward or away from the traction roller.

[0009] In some embodiments, the belt winding device further includes a tension detection structure and a control structure. The tension detection structure is disposed at the upstream end of the traction structure and is used to detect the tension of the film material. The tension detection structure is communicatively connected to the control structure. The first drive member is communicatively connected to the control structure. The control structure is used to control the first drive member according to the tension detection structure to adjust the rotation speed of the traction roller.

[0010] In some embodiments, the tension adjustment structure includes a movable roller slidably disposed on the conveying path of the film material, a drive assembly for driving the movable roller to move in a preset direction, and a tension sensor for detecting the tension of the film material. The film material is wrapped around the movable roller, the movable roller is connected to the output end of the drive assembly, the tension sensor is disposed on the movable roller, and the control structure is communicatively connected to the tension sensor to control the drive assembly according to the tension sensor. The drive assembly drives the movable roller to move in a first direction or a second direction to keep the tension of the film material within the preset range, wherein the first direction and the second direction are opposite directions.

[0011] In some embodiments, the tension adjustment structure further includes a displacement sensor for detecting the position of the moving roller. The displacement sensor is communicatively connected to the control structure, and the winding structure is communicatively connected to the control structure. The control structure controls the winding structure according to the displacement sensor to adjust the winding speed of the winding structure.

[0012] In some embodiments, the winding structure includes a winding roller, a mounting plate, and a third drive member. The winding roller is rotatably connected to the mounting plate, and the extension direction of the winding roller is perpendicular to the surface of the mounting plate. The winding roller is used to wind the film material, and the winding roller is connected to the output end of the third drive member. The third drive member is communicatively connected to the control structure.

[0013] In some embodiments, the winding structure further includes a web-correcting motor, a transmission structure, and a web-correcting sensor. The transmission structure is connected to the output end of the web-correcting electrode and is connected to the mounting plate. The transmission structure is used to transmit the power of the web-correcting motor to the mounting plate to drive the mounting plate to move along the extension direction of the winding roller. The web-correcting sensor is mounted on the mounting plate and is used to detect the position of the film material. The web-correcting sensor and the web-correcting motor are communicatively connected to the control structure.

[0014] In some embodiments, a roller correction structure is further provided between the traction structure and the tension adjustment structure, through which the film material passes, and the roller correction structure is used to adjust the edge alignment of the film material.

[0015] Secondly, a high-precision roll-to-roll flexible electronic printing equipment is provided, which includes the aforementioned belt winding device.

[0016] The belt winding device provided in this application allows the traction structure to pull the film material out of the drying unit and convey it towards the winding structure while the winding structure is simultaneously winding and recovering the film material. The synchronous traction and winding structures effectively improve the winding efficiency of the film material. Furthermore, this application also includes a tension adjustment structure to coordinate the traction and winding structures. The tension adjustment structure can increase or decrease the tension of the film material during the conveying process, thereby keeping the tension of the film material within a preset range. This enables dynamic adjustment of the film material tension, effectively eliminating tension fluctuations and keeping the tension constant, thus improving the stability of the film material tension. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the belt winding device provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the film material conveying path in the tape winding device provided in the embodiments of this application;

[0020] Figure 3 yes Figure 1 A schematic diagram of the traction structure in the diagram;

[0021] Figure 4 yes Figure 1A schematic diagram of the tension detection structure in the diagram;

[0022] Figure 5 yes Figure 1 A schematic diagram of the tension adjustment structure in the diagram;

[0023] Figure 6 This is a partial structural schematic diagram of the tension adjustment structure provided in the embodiments of this application;

[0024] Figure 7 yes Figure 6 A schematic diagram of the right-side view structure;

[0025] Figure 8 yes Figure 1 A schematic diagram of the winding structure in the diagram;

[0026] Figure 9 yes Figure 1 A schematic diagram of the roller correction structure in the middle.

[0027] The following are the labeling elements in the figure:

[0028] 100. Traction structure; 110. Traction roller; 120. Driven roller; 130. First driving component; 140. First support frame; 141. Slide groove; 150. Mounting block; 160. Second driving component; 170. Elastic component; 200. Tension adjustment structure; 210. Drive assembly; 211. Drive motor; 212. Magnetic powder clutch; 213. Mounting seat; 220. Moving roller; 241. Rotating shaft; 242. Traction rope; 250. Conveying roller; 260. Second support frame; 261. Connecting block; 271. Tension sensor; 272. Displacement sensor; 291. Working platform; 292. Sliding connecting block; 293. Guide rail 300. Tension detection structure; 310. Rotary mounting base; 320. Pressure sensor; 330. Induction roller; 400. Winding structure; 410. Winding roller; 411. Inflation connector; 420. Mounting plate; 430. Third drive component; 440. Correction motor; 450. Transmission structure; 460. Correction sensor; 470. Transition roller; 480. Synchronous pulley mechanism; 490. Connecting plate; 491. Guide post; 500. Film material; 610. Third support frame; 620. Cooling roller; 700. Over-roll correction structure; 710. Drive roller; 720. Edge detection sensor; 730. Fourth drive component; 740. Fourth support frame. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Please see Figures 1 to 9This application provides a belt winding device for pulling and recovering film material 500 during the conveying process. The belt winding device of this application can be set at the discharge end of the drying unit. The belt winding device of this application can actively pull the film material 500 out of the drying unit and pull the film material 500 to the winding position for winding.

[0034] The belt winding device includes a winding structure 400, a traction structure 100, and a tension adjusting structure 200. The winding structure 400 and the traction structure 100 are arranged at intervals. The traction structure 100 is used to pull the film material 500 to be wound towards the winding structure 400. The winding structure 400 is used to wind and recycle the film material 500. The tension adjusting structure 200 is located between the traction structure 100 and the winding structure 400. The film material 500 passes through the tension adjusting structure 200. The tension adjusting structure 200 is used to maintain the tension of the film material 500 within a preset range during the conveying process.

[0035] The pull-and-rewind device provided in this application allows the film material 500 to be wound and recycled by the winding structure 400 while the traction structure 100 pulls the film material 500 to be wound out of the drying unit and conveys it towards the winding structure 400. The traction structure 100 and the winding structure 400 pull the film material 500 synchronously, which can effectively improve the winding efficiency of the film roll. In addition, this application also provides a tension adjustment structure 200 to coordinate the traction structure 100 and the winding structure 400. The tension adjustment structure 200 can increase or decrease the tension of the film material 500 during the conveying process, so that the tension of the film material 500 is kept within a preset range. In this way, the tension of the film material 500 can be dynamically adjusted, effectively eliminating tension fluctuations and keeping the tension constant, thereby improving the stability of the tension of the film material 500.

[0036] Furthermore, the traction structure 100 includes a traction roller 110 and a driven roller 120 that are spaced apart from each other and rotatable about their respective axes. The film 500 passes through the gap between the traction roller 110 and the driven roller 120 and is held between the traction roller 110 and the driven roller 120. The traction structure 100 also includes a first drive member 130, which is used to drive the traction roller 110 to rotate so as to jointly traction the film 500 with the driven roller 120.

[0037] Understandably, both the traction roller 110 and the driven roller 120 are cylindrical structures. When the film material 500 passes through the gap between the traction roller 110 and the driven roller 120, the outer peripheral walls of the traction roller 110 and the driven roller 120 contact the film material 500. The traction roller 110 rotates actively, while the driven roller 120 rotates passively. The traction roller 110 and the driven roller 120 together drive the film material 500 forward. Specifically, in this application, the rotation axis of the traction roller 110 and the rotation axis of the driven roller 120 are parallel to each other.

[0038] In some embodiments, the traction structure 100 further includes a first support frame 140, a mounting block 150, and a second drive member 160. The traction roller 110 is rotatably mounted on the first support frame 140, and the driven roller 120 is rotatably mounted on the mounting block 150. The mounting block 150 is slidably connected to the first support frame 140. The output end of the second drive member 160 is connected to the mounting block 150 to drive the mounting block 150 and the driven roller 120 to move toward or away from the traction roller 110.

[0039] In this embodiment, the driven roller 120 is positioned directly below the traction roller 110. The second driving member 160 drives the mounting block 150 and the driven roller 120 to move closer to or further away from the traction roller 110; that is, the second driving member 160 drives the mounting block 150 and the driven roller 120 to move vertically up and down. Specifically, there are two mounting blocks 150, and both ends of the driven roller 120 are rotatably mounted in the two mounting blocks 150.

[0040] In some embodiments, a groove 141 is provided on the first support frame 140. The extension direction of the groove 141 is the same as the movement direction of the driven roller 120, that is, in this embodiment, the groove 141 extends vertically up and down. Further, the mounting block 150 is slidably connected to the inner wall of the groove 141. Understandably, the two opposite outer walls of the mounting block 150 are slidably connected to the two opposite inner walls of the groove 141, thereby ensuring smooth movement of the mounting block 150 without deviation. Specifically, the groove 141 of this application penetrates the side wall of the first support frame 140.

[0041] Furthermore, an elastic element 170 is connected between the first support frame 140 and the mounting block 150. The elastic element 170 is disposed on the moving path of the mounting block 150. By setting the elastic element 170, a buffering effect can be achieved to prevent the mounting block 150 and the driven roller 120 from moving excessively, thereby increasing the force between the driven roller 120 and the traction roller 110, which could cause the film material 500 to be damaged or crushed.

[0042] In some embodiments, the belt winding device further includes a tension detection structure 300 and a control structure. The tension detection structure 300 is disposed at the upstream end of the traction structure 100. The tension detection structure 300 is used to detect the tension of the film material 500. The tension detection structure 300 is communicatively connected to the control structure. The first drive member 130 is communicatively connected to the control structure. The control structure is used to control the first drive member 130 according to the tension detection structure 300 to adjust the rotation speed of the traction roller 110.

[0043] Understandably, when the film material 500 is heated by the drying unit, it will shrink or stretch to a certain extent under the influence of gravity, tension, and temperature. This phenomenon will cause the film material 500 to be too tight or too loose. By setting the tension detection structure 300, the tightness of the film material 500 can be judged based on the tension signal detected by the tension detection structure 300, thereby controlling the differential movement of the traction roller 110 to compensate for the difference in travel between the front and rear, so that the traction structure 100 can pull the film material 500 with a preset traction force.

[0044] Specifically, when the tension detection structure 300 detects the tension of the film material 500 in real time, if the tension detection structure 300 detects that the current tension of the film material 500 is too high, it immediately feeds back a signal to the control structure. The controller outputs a command to the first drive member 130, which drives the rotation speed of the traction roller 110 to slow down, thereby reducing the tension of the film material 500 to a preset range. Alternatively, if the tension detection structure 300 detects that the current tension of the film material 500 is too low, it immediately feeds back a signal to the control structure. The controller outputs a command to the first drive member 130, which drives the rotation speed of the traction roller 110 to increase, thereby realizing closed-loop constant tension control.

[0045] Furthermore, the tension detection structure 300 includes a rotary mounting base 310, a pressure sensor 320, and a sensing roller 330. The sensing roller 330 is rotatably mounted on the rotary mounting base 310. The film material 500 is wrapped around the top surface of the sensing roller 330, so the film material 500 exerts a downward pressure on the top surface of the sensing roller 330. The rotary mounting base 310 is disposed on the top surface of the pressure sensor 320 and presses down on the pressure sensor 320. Therefore, the pressure sensor 320 can obtain the tension of the film material 500 by detecting the pressure received by the rotary mounting base 310.

[0046] Understandably, there are two rotary mounting bases 310 and two pressure sensors 320. The two ends of the sensing roller 330 are rotatably connected to the two rotary mounting bases 310 respectively. The two pressure sensors 320 are spaced apart. The two rotary mounting bases 310 are respectively positioned above the two pressure sensors 320. The two rotary mounting bases 310 are symmetrical to each other, thereby improving the accuracy of tension detection.

[0047] In some embodiments, the belt winding device further includes a third support frame 610 and a cooling roller 620. The cooling roller 620 is rotatably mounted on the third support frame 610. The third support frame 610 and the cooling roller 620 are located at the upstream end of the tension detection structure 300. The film material 500 is wound around the cooling roller 620. The cooling roller 620 can cool the film material 500 after it has been baked at a high temperature. Understandably, a cooling water channel can be provided inside the cooling roller 620. The heat exchange of the cooling water in the cooling water channel can maintain a low roller surface temperature of the cooling roller 620. Since the film material 500 is in contact with the roller surface of the cooling roller 620, the temperature of the film material 500 can be reduced.

[0048] In this embodiment, the height of the sensing roller 330 is higher than that of the cooling roller 620 and the traction roller 110, which allows the sensing roller 330 to better tension the film material 500, thereby improving the accuracy of the pressure sensor 320 in sensing pressure.

[0049] In some embodiments, the tension adjustment structure 200 includes a movable roller 220 slidably disposed on the conveying path of the film material 500, a drive assembly 210 for driving the movable roller 220 to move in a preset direction, and a tension sensor 271 for detecting the tension of the film material 500. The film material 500 is wrapped around the movable roller 220, the movable roller 220 is connected to the output end of the drive assembly 210, the tension sensor 271 is disposed on the movable roller 220, and the control structure is communicatively connected to the tension sensor 271 to control the drive assembly 210 according to the tension sensor 271. The drive assembly 210 drives the movable roller 220 to move in a first direction a or a second direction b so that the tension of the film material 500 is maintained within a preset range, wherein the first direction a and the second direction b are opposite directions.

[0050] The tension sensor 271 can detect the tension of the film material 500 in real time during the film material 500 conveying process. When a change in the tension of the film material 500 is detected, the tension sensor 271 transmits the tension change signal to the control structure. The control structure sends a command to the drive component 210, and the drive component 210 drives the moving roller 220 to move along the first direction a or the second direction b. In this way, the tension of the film material 500 can be dynamically adjusted, so that the tension of the film material 500 is reduced or increased to a preset range, effectively eliminating tension fluctuations and keeping the tension constant, thereby improving the accuracy of conductive line printing.

[0051] Understandably, when tension sensor 271 detects the tension of film material 500 in real time, if tension sensor 271 detects that the current tension of film material 500 is too high, it immediately feeds back a signal to the control structure. The controller outputs a command to drive component 210, which drives moving roller 220 to move along the first direction a, thereby reducing the tension of film material 500 to a preset range. Alternatively, if tension sensor 271 detects that the current tension of film material 500 is too low, it immediately feeds back a signal to the control structure. The controller outputs a command to drive component 210, which drives moving roller 220 to move along the second direction b, thereby increasing the tension of film material 500 to a preset range, thus achieving closed-loop constant tension control. It should be noted that, through the adjustment action of the belt winding device of this application, the tension of film material 500 fluctuates within a range of 1%, that is, the difference between the maximum tension of film material 500 and the preset tension value will not exceed 1% of the preset tension value, and the difference between the minimum tension of film material 500 and the preset tension value will not exceed 1% of the preset tension value.

[0052] In this application, the belt winding device also includes a conveyor roller 250 for guiding the conveyor roller 250 of the film material 500, which is wrapped around the conveyor roller 250. Optionally, multiple conveyor rollers 250 can be provided in the conveying path of the film material 500 to tension the film material 500 and to plan the conveying path of the film material 500.

[0053] In some embodiments, the belt winding device further includes a traction rope 242 and a rotating shaft 241. The rotating shaft 241 is connected to the output end of the drive assembly 210. One end of the traction rope 242 is fixed around the outer circumferential surface of the rotating shaft 241, and the other end of the traction rope 242 is connected to the movable roller 220. The rotating shaft 241 can rotate around its axis 241 to drive the traction rope 242 to pull the movable roller 220 to move in a preset direction. By using the traction rope 242 to pull the movable roller 220, the structure of the belt winding device can be simplified due to the small space occupied by the traction rope 242, which is beneficial for miniaturization. Optionally, the traction rope 242 can be a steel wire or fishing line, etc.

[0054] In some embodiments, the drive assembly 210 includes a magnetic powder clutch 212 and a drive motor 211. The power input end of the magnetic powder clutch 212 is connected to the drive shaft of the drive motor 211, and the power output end of the magnetic powder clutch 212 is connected to the rotating shaft 241. Preferably, the clutch is a magnetic powder clutch 212. By setting the magnetic powder clutch 212, the power output of the magnetic powder clutch 212 can be kept constant, thereby keeping the tension of the traction rope 242 constant, and enabling the magnetic powder clutch 212 to achieve high-precision power output. The magnetic powder clutch 212 is based on electromagnetic principles and utilizes magnetic powder to transmit torque. By controlling the input current, the output torque can be changed, and the torque is proportional to the excitation current within a specified torque range, thus serving as a linear adjustment element. When the coil is not energized, the input shaft rotates, and the magnetic powder adheres to the inner wall of the clamping ring under the action of centrifugal force. The output shaft and input shaft are not in contact; this is the idling state. When the coil is energized, the magnetic powder generates a magnetic flux under the action of magnetic lines of force, causing the output shaft and input shaft to rotate as a rigid body; this is the working state, thus achieving the purpose of torque transmission. The magnetic powder clutch 212 has the advantages of high linearity and high-precision torque control. Furthermore, since the torque depends only on the magnitude of the excitation current, the output torque is constant. It also boasts advantages such as fast response speed, simple structure, no pollution, no noise, no impact vibration, and energy saving.

[0055] In this application, the tension adjustment structure 200 further includes a mounting base 213, on which a rotating shaft 241 is mounted, and the rotating shaft 241 is rotatably connected to the mounting base 213. Optionally, the drive motor 211 is a servo motor. In some embodiments, the belt winding device further includes a second support frame 260, on which a movable roller 220 is mounted. A connecting block 261 is provided at one end of the second support frame 260 near the rotating shaft 241, and a traction rope 242 is connected to the connecting block 261. The axial direction of the movable roller 220 intersects the extension direction of the traction rope 242. Specifically, the axial direction of the movable roller 220 is perpendicular to the extension direction of the traction rope 242.

[0056] In some embodiments, tension sensor 271 is mounted on connecting block 261, and traction rope 242 passes through tension sensor 271 and is connected to connecting block 261. Tension sensor 271 is used to detect the tension of traction rope 242. When traction rope 242 pulls the support frame, the traction force on membrane material 500 and the tension of traction rope 242 are in a balanced state. Therefore, the tension of membrane material 500 can be obtained by detecting the tension of traction rope 242. When the tension of membrane material 500 changes instantaneously, the tension of traction rope 242 will also change.

[0057] In some embodiments, the tension adjustment structure 200 further includes a displacement sensor 272, which detects the position of the moving roller 220. The displacement sensor 272 is communicatively connected to the control structure, and the control structure controls the winding structure 400 according to the displacement sensor 272 to adjust the winding speed of the winding structure 400. By sensing the displacement of the moving roller 220 through the displacement sensor 272 and transmitting the displacement signal to the control structure, the displacement sensed by the displacement sensor 272 is compared with the displacement set value to form a closed-loop control. The control structure sends a command to the winding structure 400 to control the winding structure 400 to speed up or slow down the winding speed, thereby adjusting the feed amount of the film material 500 and effectively maintaining constant tension.

[0058] Understandably, by detecting the position of the moving roller 220, the displacement sensor 272 can limit the travel distance of the moving roller 220 and prevent it from moving excessively. Optionally, the displacement sensor 272 is a linear potentiometer.

[0059] In some embodiments, the tension adjustment mechanism further includes a working platform 291, a sliding connecting block 292, and a guide rail 293. The guide rail 293 is mounted on the top surface of the working platform 291, and the extension direction of the guide rail 293 is parallel to the extension direction of the traction rope 242. The support frame is connected to the sliding connecting block 292, and the sliding connecting block 292 is slidably connected to the guide rail 293. Through the cooperation between the sliding connecting block 292 and the guide rail 293, the resistance encountered by the second support frame 260 when moving is effectively reduced, making the movement of the moving roller 220 smoother, thereby improving the adjustment efficiency.

[0060] In some embodiments, the winding structure 400 includes a winding roller 410, a mounting plate 420, and a third drive member 430. The winding roller 410 is rotatably connected to the mounting plate 420. The extension direction of the winding roller 410 is perpendicular to the surface of the mounting plate 420. The winding roller 410 is used to wind the film material 500. The rotation of the winding roller 410 can drive the film material 500 to gradually wind into a roll. The winding roller 410 is connected to the output end of the third drive member 430. The third drive member 430 is communicatively connected to the control structure.

[0061] Understandably, the displacement sensor 272 senses the displacement of the moving roller 220 and transmits the displacement signal to the control structure. The displacement sensed by the displacement sensor 272 is compared with the displacement setpoint to form a closed-loop control. The control structure sends a command to the third drive unit 430, which controls the winding roller 410 to speed up or slow down its rotation, or to rotate it forward or backward, thereby adjusting the feed amount of the film material 500 and effectively maintaining constant tension. Specifically, one end of the winding roller 410 extends through the mounting plate 420, and the third drive unit 430 is connected to the winding roller 410 via a synchronous pulley mechanism 480.

[0062] Preferably, the take-up roller 410 of this application is an air-expanding shaft, which is connected to an inflation connector 411. The air-expanding shaft can be inflated through the inflation connector 411, allowing the shaft diameter to change according to the inflation amount, thereby adjusting the tension between the take-up roller 410 and the material roll. This enables very flexible and convenient adjustment of the rotational friction between the take-up roller 410 and the material roll, facilitating take-up. Furthermore, in this embodiment, a synchronous pulley mechanism 480 is connected between the third drive member 430 and the take-up roller 410. The synchronous pulley mechanism 480 can change the transmission direction of the power output from the third drive member 430, thereby adjusting the position of the third drive member 430 so that one end of the take-up roller 410 passes through the driven wheel of the synchronous pulley mechanism 480 and is exposed, facilitating inflation of the air-expanding shaft through the inflation connector 411.

[0063] In some embodiments, the winding structure 400 further includes a web-correcting motor 440, a transmission structure 450, and a web-correcting sensor 460. The transmission structure 450 is connected to the output end of the web-correcting electrode and is connected to the mounting plate 420. The transmission structure 450 is used to transmit the power of the web-correcting motor 440 to the mounting plate 420 to drive the mounting plate 420 to move along the extension direction of the winding roller 410. The web-correcting sensor 460 is mounted on the mounting plate 420 and is used to detect the position of the film material 500. The web-correcting sensor 460 and the web-correcting motor 440 are communicatively connected to the control structure.

[0064] Optionally, the transmission structure 450 is a screw and nut mechanism, and the winding structure 400 also includes a connecting plate 490. The connecting plate 490 is connected to the mounting plate 420 and is connected to the output end of the web guiding motor 440 through the screw and nut mechanism. The screw and nut mechanism can convert the rotational motion of the output shaft of the web guiding motor 440 into linear motion of the connecting plate 490 and the mounting plate 420, thereby driving the winding roller 410 to move in a straight line. Furthermore, a guide post 491 is connected between the connecting plate 490 and the mounting plate 420. The guide post 491 can guide the movement of the mounting plate 420 and prevent the mounting plate 420 from deviating.

[0065] The position deviation of the moving roller 220 is sensed by the correction sensor 460 and the position deviation signal is transmitted to the control structure. The position deviation sensed by the correction sensor 460 is compared with the position deviation set value to form a closed-loop control. The control structure sends a command to the correction motor 440 to control the correction motor 440 to drive the winding roller 410 to move along its extension direction, so that the edge of the film 500 is flush.

[0066] Understandably, in this application, the film material 500 includes two opposing long sides, which are parallel to the conveyor chain path of the film material 500. Furthermore, the fact that the edges of the film material 500 are flush means that the two long sides of the film material 500 are perpendicular to the extending direction of the winding roller 410. Optionally, the web guiding sensor 460 is an ultrasonic sensor.

[0067] In some embodiments, the winding structure 400 further includes a transition roller 470 for guiding the conveying of the film material 500. The film material 500 is wrapped around the transition roller 470, which is connected to the mounting plate 420, and the transition roller 470 is parallel to the extending direction of the winding roller 410. Optionally, multiple transition rollers 470 can be provided in the conveying path of the film material 500 to be wound up, so as to tension the film material 500 and to rationally plan the conveying path of the film material 500.

[0068] Since the edges of the film material 500 will shift and become uneven after passing through the drying unit, a roller correction structure 700 is also provided between the traction structure 100 and the tension adjustment structure 200 of this application. The film material 500 passes through the roller correction structure 700, which is used to adjust the edges of the film material 500 to be even.

[0069] Specifically, the over-roller correction structure 700 includes a drive roller 710, an edge detection sensor 720, a fourth drive element 730, and a fourth support frame 740. The drive roller 710 is rotatably connected to the fourth support frame 740, and the fourth support frame 740 is connected to the rotational output end of the fourth drive element 730. The film material 500 is wrapped around the drive roller 710. Specifically, two drive rollers 710 are provided, and the film material 500 is wrapped around both drive rollers 710 respectively. Specifically, the edge detection sensor 720 is an ultrasonic sensor, which can achieve a detection accuracy of 0.01mm.

[0070] This invention also proposes a high-precision roll-to-roll flexible electronic printing equipment, which includes a belt pulling and winding device. The specific structure of the belt pulling and winding device is as described in the above embodiments. Since this high-precision roll-to-roll flexible electronic printing equipment adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0071] In summary, the pull-and-rewind device provided in this application allows the film material 500 to be wound and recycled by the winding structure 400 while the traction structure 100 pulls the film material 500 out of the drying unit and conveys it towards the winding structure 400. The synchronous traction of the film material 500 by the traction structure 100 and the winding structure 400 effectively improves the winding efficiency of the film roll. Furthermore, this application also provides a tension adjustment structure 200 to coordinate the traction structure 100 and the winding structure 400. The tension adjustment structure 200 can increase or decrease the tension of the film material 500 during the conveying process, thereby keeping the tension of the film material 500 within a preset range. This enables dynamic adjustment of the tension of the film material 500, effectively eliminating tension fluctuations and keeping the tension constant, thereby improving the stability of the tension of the film material 500.

[0072] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A belt winding device for pulling and recovering film material (500) during the conveying process, characterized in that: The belt winding device includes a winding structure (400), a traction structure (100), and a tension adjusting structure (200). The winding structure (400) and the traction structure (100) are spaced apart. The traction structure (100) is used to pull the film material (500) to be wound towards the winding structure (400). The winding structure (400) is used to wind and recycle the film material (500). The tension adjusting structure (200) is located between the traction structure (100) and the winding structure (400). The film material (500) passes through the tension adjusting structure (200). The tension adjusting structure (200) is used to increase or decrease the tension of the film material (500) during the conveying process to maintain the tension of the film material (500) within a preset range. The winding device also includes a control structure; the tension adjustment structure (200) includes a movable roller (220) slidably disposed on the conveying path of the film material (500) and a drive assembly (210) for driving the movable roller (220) to move in a preset direction, the film material (500) being wrapped around the movable roller (220); the tension adjustment structure (200) also includes a displacement sensor (272), the displacement sensor (272) being used to detect the position of the movable roller (220), the displacement sensor (272) being communicatively connected to the control structure, the winding structure (400) being communicatively connected to the control structure, the control structure controlling the winding structure (400) according to the displacement sensor (272) to adjust the winding speed of the winding structure (400).

2. The belt winding device as described in claim 1, characterized in that: The traction structure (100) includes a traction roller (110) and a driven roller (120) spaced apart from each other and rotatable about their respective axes. The film material (500) passes through the gap between the traction roller (110) and the driven roller (120) and is held between the traction roller (110) and the driven roller (120). The traction structure (100) also includes a first drive member (130) for driving the traction roller (110) to rotate so as to jointly traction the film material (500) with the driven roller (120).

3. The belt winding device as described in claim 2, characterized in that: The traction structure (100) further includes a first support frame (140), a mounting block (150), and a second drive member (160). The traction roller (110) is rotatably mounted on the first support frame (140), and the driven roller (120) is rotatably mounted on the mounting block (150). The mounting block (150) is slidably connected to the first support frame (140). The output end of the second drive member (160) is connected to the mounting block (150) to drive the mounting block (150) and the driven roller (120) to move toward or away from the traction roller (110).

4. The belt winding device as described in claim 2 or 3, characterized in that: The belt winding device further includes a tension detection structure (300), which is located at the upstream end of the traction structure (100). The tension detection structure (300) is used to detect the tension of the film material (500). The tension detection structure (300) is communicatively connected to the control structure. The first drive member (130) is communicatively connected to the control structure. The control structure is used to control the first drive member (130) according to the tension detection structure (300) to adjust the rotation speed of the traction roller (110).

5. The belt winding device as described in claim 4, characterized in that: The tension adjustment structure (200) includes a tension sensor (271) for detecting the tension of the film material (500). The moving roller (220) is connected to the output end of the drive assembly (210). The tension sensor (271) is disposed on the moving roller (220). The control structure is communicatively connected to the tension sensor (271) to control the drive assembly (210) according to the tension sensor (271). The drive assembly (210) drives the moving roller (220) to move along a first direction or a second direction so that the tension of the film material (500) is maintained within the preset range. The first direction and the second direction are opposite directions.

6. The belt winding device as described in claim 5, characterized in that: The winding structure (400) includes a winding roller (410), a mounting plate (420), and a third drive member (430). The winding roller (410) is rotatably connected to the mounting plate (420). The extension direction of the winding roller (410) is perpendicular to the surface of the mounting plate (420). The winding roller (410) is used to wind the film material (500). The winding roller (410) is connected to the output end of the third drive member (430). The third drive member (430) is communicatively connected to the control structure.

7. The belt winding device as described in claim 6, characterized in that: The winding structure (400) further includes a web-correcting motor (440), a transmission structure (450), and a web-correcting sensor (460). The transmission structure (450) is connected to the output end of the web-correcting motor (440) and is connected to the mounting plate (420). The transmission structure (450) is used to transmit the power of the web-correcting motor (440) to the mounting plate (420) to drive the mounting plate (420) to move along the extension direction of the winding roller (410). The web-correcting sensor (460) is mounted on the mounting plate (420) and is used to detect the position of the film material (500). The web-correcting sensor (460) and the web-correcting motor (440) are communicatively connected to the control structure.

8. The belt winding device as described in claim 1, characterized in that: A roller correction structure (700) is also provided between the traction structure (100) and the tension adjustment structure (200). The film material (500) passes through the roller correction structure (700), which is used to adjust the edges of the film material (500) to be flush.

9. A high-precision roll-to-roll flexible electronic printing equipment, characterized in that: Includes the belt winding device as described in any one of claims 1 to 8.

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