Constant tension roll-to-roll transport mechanism for imprinting

Abstract

The utility model relates to the field of embossing technology, concretely relates to a constant tension roll-to-roll transmission mechanism for embossing, including frame, the frame is equipped with the material feeding shaft and the material collecting shaft in proper order along the transport direction, the end of material feeding shaft and material collecting shaft and located frame outside is equipped with the first motor and the second motor of driving its rotation respectively, material feeding shaft and material collecting shaft are respectively equipped with material feeding roller and material collecting roller on, be equipped with mould roll between material feeding roller and material collecting roller, the mould roll is passed in and is equipped with the mould axle that sets up on the frame and supplies its rotation, the side that mould roll is close to material collecting roller is equipped with cooling roller, the cooling roller is passed in and is equipped with the cooling axle that sets up on the frame and supplies its rotation, the end of cooling axle and located frame outside is equipped with the tension balance structure of driving cooling roller along the circumferential of mould roll reciprocating motion, the utility model can adjust the tension of film in embossing process, guarantee the constant tension of film.

Description

Technical Field

[0001] This utility model relates to the field of embossing technology, specifically to a constant tension roll-to-roll transport mechanism for embossing. Background Technology

[0002] Roll-to-roll transport is a highly efficient and continuous production method widely used in various imprinting technologies. For example, roll-to-roll UV-curable imprinting technology is characterized by its ability to efficiently and cost-effectively mass-produce micro- and nano-structures on thin films, making it widely applicable in aerospace, flexible electronics, and optical devices. A roll-to-roll UV-curable imprinting apparatus includes a transport mechanism, a coating mechanism, and an imprinting and curing mechanism. The film is transported via the transport mechanism, then coated with UV adhesive by the coating mechanism. As the UV-coated film passes through the imprinting and curing mechanism, the UV adhesive on the film is pressed into the desired pattern by support rollers and die rollers while simultaneously being cured by UV light. After demolding with the assistance of cooling rollers, the final product is obtained.

[0003] In the process of transporting film in a common roll-to-roll UV curing embossing device, although theoretically the feeding roller and the take-up roller are required to rotate synchronously, it is difficult to achieve this in actual production. Therefore, the feeding speed and the take-up speed cannot be kept completely consistent. When the feeding speed is less than the take-up speed, the film is stretched, resulting in excessive tension on the film, which may cause the film to deform and be damaged. When the feeding speed is greater than the take-up speed, the film relaxes, resulting in insufficient film tension to adhere to the mold roller, which affects the embossing quality. Utility Model Content

[0004] The present invention aims to provide a constant tension roll-to-roll transport mechanism for embossing, which can adjust the tension of the film during the roll-to-roll UV curing embossing process to ensure that the tension of the film remains constant during transportation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A constant tension roll-to-roll transport mechanism for embossing includes a frame. The frame has a feeding shaft and a take-up shaft arranged sequentially along the transport direction. A first motor driving the feeding shaft to rotate is located at the end of the feeding shaft and outside the frame. A feeding roller is sleeved on the feeding shaft. A second motor driving the take-up shaft to rotate is located at the end of the take-up shaft and outside the frame. A take-up roller is sleeved on the take-up shaft. A die roller is located between the feeding roller and the take-up roller. A die shaft mounted on the frame and used for the die roller to rotate passes through the die roller. A cooling roller is located on the side of the die roller near the take-up roller. A cooling shaft mounted on the frame and used for the cooling roller to rotate passes through the cooling roller. A tension balancing structure driving the cooling roller to reciprocate along the circumference of the die roller is located at the end of the cooling shaft and outside the frame.

[0006] In this invention, before the printing begins, one end of the film wound on the feeding roller is wound onto the take-up roller. Then, the first and second motors are turned on to start the transmission mechanism. The first and second motors drive the feeding and take-up shafts to rotate, and the rotating feeding and take-up shafts drive the feeding and take-up rollers to rotate, transporting the film from the feeding roller to the take-up roller. During the film transport process by the feeding and take-up rollers, the film first passes through the coating mechanism and is evenly coated with UV adhesive. Then, when it passes through the support roller and the die roller, the UV adhesive on the film is pressed into the desired pattern by the die roller and the support roller and cured by UV light. Finally, the film with cured UV adhesive is demolded by the cooling roller and continues to move towards the take-up roller until it is wound onto the take-up roller.

[0007] During film transport, the tension balancing structure can be activated to adjust the tension on the film by adjusting the position of the cooling shaft. When the tension on the film is too high, the tension balancing structure adjusts the cooling shaft to move downwards along the circumference of the mold roller. The cooling roller on the cooling shaft moves synchronously with the cooling shaft. As the cooling roller moves downwards along the circumference of the mold roller, the film is no longer pulled by the cooling roller, reducing the tension on the film and preventing deformation and damage. When the tension on the film is too low, the tension balancing structure adjusts the cooling shaft to move upwards along the circumference of the mold roller. The cooling roller on the cooling shaft moves synchronously with the cooling shaft. As the cooling roller moves upwards along the circumference of the mold roller, the cooling roller pulls the film upwards, making the film taut and better fit with the mold roller. This allows the texture on the mold roller to be more completely imprinted on the UV adhesive on the film, improving the imprinting quality.

[0008] It also includes a microprocessor and a tension sensor for detecting film tension, the tension sensor being located below the mold roller and mounted on the frame, and the microprocessor being electrically connected to both the tension sensor and the tension balancing structure.

[0009] In this invention, a microprocessor receives detection data from a tension sensor to control a tension balancing structure to adjust the tension on the film. A set tension value needs to be established that meets the imprinting requirements without deforming or damaging the film. When the tension sensor detects that the tension on the film exceeds the set value, the microprocessor controls the tension balancing structure to reduce the tension on the film; conversely, it controls the tension balancing structure to increase the tension on the film when the tension is less than the set value. By receiving detection data from the tension sensor and controlling the tension balancing structure to adjust the tension on the film, the microprocessor achieves automated control of the tension balancing structure, eliminating the need for manual operation.

[0010] The tension balancing structure includes a sliding member, which is disposed on the outside of the frame and connected to the end of the cooling shaft. Below the sliding member and located on the outside of the frame, there is a driving member that drives the sliding member to reciprocate along the circumferential direction of the mold roller. The driving member is electrically connected to the microprocessor.

[0011] In this invention, the microprocessor can control the drive component to drive the sliding component to reciprocate along the circumference of the mold roller. During the reciprocating motion of the sliding component along the axis of the mold roller, the cooling shaft reciprocates along the circumference of the mold roller with the sliding component and drives the cooling roller to move synchronously.

[0012] When the tension on the film is too high, the microprocessor controls the drive to drive the slider to move the cooling roller downwards along the circumference of the mold roller. The film is no longer pulled by the cooling roller, reducing the tension on the film and preventing deformation and damage. When the tension on the film is too low, the microprocessor controls the drive to drive the slider to move the cooling roller upwards along the circumference of the mold. The cooling roller pulls the film upwards, making the film more taut and better fit with the mold roller. This allows the texture on the mold roller to be more completely imprinted on the UV adhesive on the film, improving the imprinting quality.

[0013] The sliding component includes a slide rail, which is arc-shaped and disposed on the outside of the frame. A slider is sleeved on the slide rail. An arc-shaped opening is provided on the frame corresponding to the position of the slide rail. The opening allows the end of the cooling shaft to extend into and connect to the slider. A support rod is hinged to the side of the slider away from the cooling shaft. A drive component is hinged to the end of the support rod away from the slider.

[0014] In this invention, the driving component can drive the support rod to move the slider back and forth along the circumference of the mold roller on the slide rail. The opening on the frame allows the end of the cooling shaft to be connected to the slider, so that the cooling shaft can move back and forth along the circumference of the mold roller within the range of the opening as the slider moves, and drive the cooling roller to move synchronously.

[0015] When the tension on the film is too high, the control drive drives the support rod to move the cooling roller downwards along the circumference of the mold roller. The film is no longer pulled by the cooling roller, reducing the tension on the film and preventing deformation and damage. When the tension on the film is too low, the control drive drives the support rod to move the cooling roller upwards along the circumference of the mold. The cooling roller pulls the film upwards, making the film more taut and better fit with the mold roller. This allows the texture on the mold roller to be more completely imprinted on the UV adhesive on the film, improving the imprinting quality.

[0016] The drive unit includes a third motor, which is electrically connected to the microprocessor. The third motor is located below the slide rail and on the outside of the frame. The third motor has an output shaft facing the transport direction. The output shaft is coaxially connected to a lead screw extending in the transport direction. A nut sleeve is fitted on the lead screw. A fixing block is provided at the top of the nut sleeve. The fixing block is hinged to the support rod.

[0017] In this invention, a microprocessor controls a third motor to drive the nut sleeve to reciprocate along the lead screw. When the nut sleeve moves along the lead screw in the transport direction, the fixed block on the nut sleeve moves synchronously, and the support rod moves with the fixed block, causing the slider to move upward along the slide rail. When the nut sleeve moves along the lead screw away from the transport direction, the fixed block on the nut sleeve moves synchronously, and the support rod moves with the fixed block, causing the slider to move downward along the slide rail. The microprocessor-controlled third motor achieves automated control of the driving components, eliminating the need for manual operation.

[0018] Compared with the prior art, this utility model also has the following technical effects: In this invention, before the printing begins, one end of the film wound on the feeding roller is wound onto the take-up roller. Then, the first and second motors are turned on to start the transmission mechanism. The first and second motors drive the feeding and take-up shafts to rotate, and the rotating feeding and take-up shafts drive the feeding and take-up rollers to rotate, transporting the film from the feeding roller to the take-up roller. During the rotation of the feeding and take-up rollers and the transport of the film, the film first passes through the coating structure and is uniformly coated with UV adhesive. Then, when it passes through the support roller and the die roller, the UV adhesive on the film is pressed into the desired pattern by the die roller and the support roller and cured by UV light. Finally, the film with cured UV adhesive is demolded by the cooling roller and continues to move towards the take-up roller until it is wound onto the take-up roller.

[0019] During the film transport process, the microprocessor can receive the detection data from the tension sensor to control the third motor to drive the nut sleeve to reciprocate on the lead screw. The fixed block on the nut sleeve moves with the nut sleeve. During the reciprocating motion of the fixed block on the lead screw, the support rod moves with the fixed block and drives the slider to reciprocate along the circumference of the mold roller along the slide rail. During the reciprocating motion of the slider along the slide rail, the cooling shaft reciprocates along the circumference of the mold roller with the slider and drives the cooling roller to move synchronously.

[0020] When the tension sensor detects that the tension on the film exceeds a set value, the microprocessor controls the third motor to move the cooling roller downwards along the circumference of the mold roller. This reduces the tension on the film, preventing deformation and damage. Conversely, when the tension sensor detects that the tension on the film is less than the set value, the microprocessor controls the third motor to move the cooling roller upwards along the circumference of the mold roller, pulling the film upwards and ensuring better adhesion to the mold roller. This allows the texture on the mold roller to be more completely imprinted onto the UV adhesive on the film, improving the imprinting quality. By receiving data from the tension sensor and controlling the third motor to adjust the tension on the film, the microprocessor achieves automated control, eliminating the need for manual operation.

[0021] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0022] Figure 1 This is a front view of a constant tension roll-to-roll transport mechanism for embossing according to the present invention. Figure 2 This is a rear view of a constant tension roll-to-roll transport mechanism for embossing according to the present invention. Figure 3 This is a top view of a constant tension roll-to-roll transport mechanism for embossing according to the present invention.

[0023] The reference numerals in the accompanying drawings of the instruction manual include: frame 1, feeding shaft 2, receiving shaft 3, mold shaft 4, cooling shaft 5, feeding roller 6, receiving roller 7, support roller 8, mold roller 9, cooling roller 10, first motor 11, second motor 12, third motor 13, coating mechanism 14, ultraviolet lamp 15, tension sensor 16, slide rail 17, slider 18, opening 19, support rod 20, lead screw 21, nut sleeve 22, and fixing block 23. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] 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 illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0029] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

[0030] See the example. Figure 1 , Figure 2 and Figure 3 As shown, this embodiment is a constant tension roll-to-roll transport mechanism for embossing, including a frame 1. The frame 1 is provided with a feeding shaft 2 and a receiving shaft 3 in sequence along the transport direction. A first motor 11 is provided at the end of the feeding shaft 2 and outside the frame 1 to drive its rotation. A feeding roller 6 is sleeved on the feeding shaft 2. A second motor 12 is provided at the end of the receiving shaft 3 and outside the frame 1 to drive its rotation. A receiving roller 7 is sleeved on the receiving shaft 3. A mold roller 9 is provided between the feeding roller 6 and the receiving roller 7. A mold shaft 4, which is set on the frame 1 and allows the mold roller to rotate, passes through the mold roller 9. A cooling roller 10 is provided on the side of the mold roller 9 near the receiving roller 7. A cooling shaft 5, which is set on the frame 1 and allows the cooling roller 10 to rotate, passes through the cooling roller 10. A tension balance structure is provided at the end of the cooling shaft 5 and outside the frame 1 to drive the cooling roller 10 to reciprocate along the circumference of the mold roller 9. In this embodiment, before the printing begins, one end of the film wound on the feeding roller 6 is wound onto the receiving roller 7. Then, the first motor 11 and the second motor 12 are turned on to start the transmission mechanism. The first motor 11 and the second motor 12 drive the feeding shaft 2 and the receiving shaft 3 to rotate. Then, the rotating feeding shaft 2 and the receiving shaft 3 drive the feeding roller 6 and the receiving roller 7 to rotate, so that the film is transported from the feeding roller 6 to the receiving roller 7. During the process of the feeding roller 6 and the receiving roller 7 rotating and transporting the film, the film first passes through the coating mechanism 14 and is uniformly coated with UV adhesive. Then, when it passes through the support roller 8 and the mold roller 9, the UV adhesive on the film is pressed into the required pattern by the mold roller 9 in conjunction with the support roller 8 and cured by the UV lamp 15. Finally, the film with cured UV adhesive is demolded by the cooling roller 10 and continues to move towards the receiving roller 7 until it is wound onto the receiving roller 7.

[0031] During film transport, the tension balancing structure can be activated to adjust the tension on the film by adjusting the position of the cooling shaft 5. When the tension on the film is too high, the tension balancing structure adjusts the cooling shaft 5 to move downwards along the circumference of the mold roller 9. The cooling roller 10 on the cooling shaft 5 moves synchronously with the cooling shaft 5. As the cooling roller 10 moves downwards along the circumference of the mold roller 9 with the cooling shaft 5, the film is no longer pulled by the cooling roller 10, reducing the tension on the film and preventing deformation and damage. When the tension on the film is too low, the tension balancing structure adjusts the cooling shaft 5 to move upwards along the circumference of the mold roller 9. The cooling roller 10 on the cooling shaft 5 moves synchronously with the cooling shaft 5. As the cooling roller 10 moves upwards along the circumference of the mold roller 9 with the cooling shaft 5, the cooling roller 10 pulls the film upwards, making the film taut and better fit with the mold roller 9. This allows the texture on the mold roller 9 to be more completely imprinted on the UV adhesive on the film, improving the imprinting quality.

[0032] It also includes a microprocessor and a tension sensor 16 for detecting film tension. The tension sensor 16 is located below the mold roller 9 and is mounted on the frame 1. The microprocessor is electrically connected to the tension sensor 16 and the tension balancing structure, respectively. In this embodiment, the microprocessor can receive detection data from the tension sensor 16 to control the tension balancing structure to adjust the tension on the film. A set tension value needs to be set that meets the imprinting requirements without deforming or damaging the film. When the tension sensor 16 detects that the tension on the film is greater than the set value, the microprocessor controls the tension balancing structure to reduce the tension on the film; conversely, it controls the tension balancing structure to increase the tension on the film. By receiving detection data from the tension sensor 16 and controlling the tension balancing structure to adjust the tension on the film, the microprocessor achieves automated control of the tension balancing structure, avoiding manual operation.

[0033] The tension balancing structure includes a sliding member, which is located outside the frame 1 and connected to the end of the cooling shaft 5. Below the sliding member and located outside the frame 1, there is a driving member that drives the sliding member to reciprocate along the circumferential direction of the mold roller 9. The driving member is electrically connected to the microprocessor. In this embodiment, the microprocessor can control the drive component to drive the sliding component to reciprocate along the circumference of the mold roller 9. During the reciprocating motion of the sliding component along the axis of the mold roller 9, the cooling shaft 5 reciprocates along the circumference of the mold roller 9 with the sliding component and drives the cooling roller 10 to move synchronously.

[0034] When the tension on the film is too high, the microprocessor controls the drive to move the sliding component, causing the cooling roller 10 to move downwards along the circumference of the mold roller 9. This reduces the tension on the film, preventing deformation and damage. When the tension on the film is too low, the microprocessor controls the drive to move the sliding component, causing the cooling roller 10 to move upwards along the circumference of the mold. The cooling roller 10 pulls the film upwards, tightening it and ensuring better contact with the mold roller 9. This allows the patterns on the mold roller 9 to be more completely imprinted onto the UV adhesive on the film, improving the imprinting quality.

[0035] The sliding component includes a slide rail 17, which is arc-shaped and disposed on the outside of the frame 1. A slider 18 is sleeved on the slide rail 17. An arc-shaped opening 19 is opened on the frame 1 corresponding to the position of the slide rail 17. The opening 19 allows the end of the cooling shaft 5 to extend into and connect with the slider 18. A support rod 20 is hinged to the side of the slider 18 away from the cooling shaft 5. A driving component is hinged to the end of the support rod 20 away from the slider 18. In this embodiment, the driving component can drive the support rod 20 to move the slider 18 back and forth along the circumference of the mold roller 9 on the slide rail 17. The opening 19 on the frame 1 can be used to connect the end of the cooling shaft 5 to the slider 18, so that the cooling shaft 5 can move back and forth along the circumference of the mold roller 9 within the range of the opening 19 as the slider 18 moves, and drive the cooling roller 10 to move synchronously.

[0036] When the tension on the film is too high, the control drive unit drives the support rod 20 to move the cooling roller 10 downwards along the circumference of the mold roller 9. The film is no longer pulled by the cooling roller 10, reducing the tension on the film and preventing deformation and damage. When the tension on the film is too low, the control drive unit drives the support rod 20 to move the cooling roller 10 upwards along the circumference of the mold. The cooling roller 10 pulls the film upwards, making the film more taut and better fit with the mold roller 9. This allows the texture on the mold roller 9 to be more completely imprinted on the UV adhesive on the film, improving the imprinting quality.

[0037] The drive unit includes a third motor 13, which is electrically connected to the microprocessor. The third motor 13 is located below the slide rail 17 and is disposed on the outside of the frame 1. The third motor 13 has an output shaft facing the transport direction. The output shaft is coaxially connected to a lead screw 21 extending along the transport direction. A nut sleeve 22 is fitted on the lead screw 21. A fixing block 23 is provided at the top of the nut sleeve 22. The fixing block 23 is hinged to the support rod 20. In this embodiment, the microprocessor controls the third motor 13 to drive the nut sleeve 22 to reciprocate along the lead screw 21. When the nut sleeve 22 moves along the lead screw 21 in the transport direction, the fixing block 23 on the nut sleeve 22 moves synchronously, and the support rod 20 moves with the fixing block 23, causing the slider 18 to move upward along the slide rail 17. When the nut sleeve 22 moves away from the transport direction along the lead screw 21, the fixing block 23 on the nut sleeve 22 moves synchronously, and the support rod 20 moves with the fixing block 23, causing the slider 18 to move downward along the slide rail 17. The microprocessor-controlled third motor 13 achieves automated control of the driving components, avoiding manual operation.

[0038] In this embodiment, before the printing begins, one end of the film wound on the feeding roller 6 is wound onto the receiving roller 7. Then, the first motor 11 and the second motor 12 are turned on to start the transmission mechanism. The first motor 11 and the second motor 12 drive the feeding shaft 2 and the receiving shaft 3 to rotate. Then, the rotating feeding shaft 2 and the receiving shaft 3 drive the feeding roller 6 and the receiving roller 7 to rotate, so that the film is transported from the feeding roller 6 to the receiving roller 7. During the process of the feeding roller 6 and the receiving roller 7 rotating and transporting the film, the film first passes through the coating structure on the feeding roller 6 and is uniformly coated with UV adhesive. Then, when it passes through the support roller 8 and the mold roller 9, the UV adhesive on the film is pressed by the mold roller 9 in conjunction with the support roller 8 to form the required pattern and is cured by the UV lamp 15. Finally, the film with cured UV adhesive is demolded by the cooling roller 10 and continues to move toward the receiving roller 7 until it is wound onto the receiving roller 7.

[0039] During the film transport process, the microprocessor can receive the detection data from the tension sensor 16 to control the third motor 13 to drive the nut sleeve 22 to reciprocate on the lead screw 21. The fixing block 23 on the nut sleeve 22 moves with the nut sleeve 22. During the reciprocating motion of the fixing block 23 with the nut sleeve 22 on the lead screw 21, the support rod 20 moves with the fixing block 23, causing the slider 18 to reciprocate along the slide rail 17 along the circumference of the mold roller 9. During the reciprocating motion of the slider 18 along the slide rail 17, the cooling shaft 5 reciprocates along the circumference of the mold roller 9 with the slider 18 and drives the cooling roller 10 to move synchronously.

[0040] When tension sensor 16 detects that the tension on the film exceeds a set value, the microprocessor controls the third motor 13 to move the cooling roller 10 downwards along the circumference of the mold roller 9. The film is no longer pulled by the cooling roller 10, reducing the tension and preventing deformation or damage. When tension sensor 16 detects that the tension on the film is less than the set value, the microprocessor controls the third motor 13 to move the cooling roller 10 upwards along the circumference of the mold roller 9 with the cooling shaft 5. The cooling roller 10 pulls the film upwards, tightening it and ensuring better adhesion to the mold roller 9. This allows the patterns on the mold roller 9 to be more completely imprinted onto the UV adhesive on the film, improving the imprinting quality. By receiving the data from tension sensor 16 and controlling the third motor 13 to adjust the tension on the film, the microprocessor achieves automated control, eliminating the need for manual operation.

[0041] The above are merely embodiments of this solution. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this solution. These modifications and improvements should also be considered within the scope of protection of this solution, and will not affect the effectiveness of the implementation of this solution or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A constant tension roll-to-roll transport mechanism for embossing, characterized in that, The device includes a frame, with a feeding shaft and a receiving shaft arranged sequentially along the transport direction. A first motor is provided at the end of the feeding shaft and located outside the frame to drive its rotation. A feeding roller is sleeved on the feeding shaft. A second motor is provided at the end of the receiving shaft and located outside the frame to drive its rotation. A receiving roller is sleeved on the receiving shaft. A mold roller is provided between the feeding roller and the receiving roller. A mold shaft, mounted on the frame and used for the rotation of the mold roller, passes through the mold roller. A cooling roller is provided on the side of the mold roller near the receiving roller. A cooling shaft, mounted on the frame and used for the rotation of the cooling roller, passes through the cooling roller. A tension balance structure is provided at the end of the cooling shaft and located outside the frame to drive the cooling roller to reciprocate along the circumference of the mold roller.

2. The constant tension roll-to-roll transport mechanism for embossing according to claim 1, characterized in that: It also includes a microprocessor and a tension sensor for detecting film tension, the tension sensor being located below the mold roller and mounted on the frame, and the microprocessor being electrically connected to both the tension sensor and the tension balancing structure.

3. The constant tension roll-to-roll transport mechanism for embossing according to claim 2, characterized in that: The tension balancing structure includes a sliding member, which is disposed on the outside of the frame and connected to the end of the cooling shaft. Below the sliding member and located on the outside of the frame, there is a driving member that drives the sliding member to reciprocate along the circumferential direction of the mold roller. The driving member is electrically connected to the microprocessor.

4. The constant tension roll-to-roll transport mechanism for embossing according to claim 3, characterized in that: The sliding component includes a slide rail, which is arc-shaped and disposed on the outside of the frame. A slider is sleeved on the slide rail. An arc-shaped opening is provided on the frame corresponding to the position of the slide rail. The opening allows the end of the cooling shaft to extend into and connect to the slider. A support rod is hinged to the side of the slider away from the cooling shaft. A drive component is hinged to the end of the support rod away from the slider.

5. A constant tension roll-to-roll transport mechanism for embossing according to claim 4, characterized in that: The drive unit includes a third motor, which is electrically connected to the microprocessor. The third motor is located below the slide rail and on the outside of the frame. The third motor has an output shaft facing the transport direction. The output shaft is coaxially connected to a lead screw extending in the transport direction. A nut sleeve is fitted on the lead screw. A fixing block is provided at the top of the nut sleeve. The fixing block is hinged to the support rod.

Images