Transfer printing device and high-precision roll-to-roll flexible electronic printing equipment

Abstract

The invention belongs to the technical field of conductive circuit printing, and particularly relates to a transfer printing device and high-precision roll-to-roll flexible electronic printing equipment. The transfer printing device is used for printing ink to a film material in the conveying process and comprises a support, a coating roller rotationally installed on the support, a transfer printing roller rotationally installed on the support, a first driving structure used for driving the coating roller to rotate and a second driving structure used for driving the transfer printing roller to rotate. The coating roller and the transfer printing roller are connected with the output end of the first driving structure and the output end of the second driving structure respectively, a film material conveying space is formed between the roller surface of the coating roller and the roller surface of the transfer printing roller, a pit used for being filled with ink is formed in the roller surface of the coating roller, and the coating roller and the transfer printing roller rotate in the opposite directions and jointly clamp and press the film material. And the printing ink in the pits is embossed to the surface of the film material. The problem of how to improve the printing effect and the printing precision of the transfer printing device can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of conductive circuit printing, and in particular relates to a transfer device and high-precision roll-to-roll flexible electronic printing equipment. Background Art

[0002] With the great progress in printing and packaging, Internet of Things, bioelectronics and brain-computer fusion, flexible electronic devices with reconfigurable functions, variable shapes and stretchable features have been widely used in high-tech fields such as intelligent communications, biomedicine, aerospace, etc., and are strategic emerging industries that are vigorously cultivated and developed in the national science and technology development plan. Flexible electronics is an electronic device made by precisely combining inorganic or organic conductive materials with soft and ductile film substrates. Unlike traditional silicon-based electronics based on rigid materials and substrates, flexible electronics can withstand certain deformations and have physical bending capabilities. Through reorganization and other methods, flexible electronic systems can achieve different performance and functions, which subversively changes the physical form of traditional electronic technology.

[0003] There have been many reports on the application of flexible printed electronic devices and theoretical discussions on printing technology, but there are few reports on the research and development of flexible electronic printing equipment as a carrier of flexible printed electronic technology, and the development is relatively lagging behind. The existing flexible printed electronic devices on the market are still far from industrial large-scale, large-area, high-precision and high-efficiency industrial production.

[0004] Considering the low manufacturing cost of gravure printing, compatibility with flexible substrates, and the characteristics of large-scale and strong compliance, the use of roll-to-roll (R2R) gravure printing technology to prepare flexible electronics is a technology with great application prospects. R2R gravure printing adopts a roll-type material collection and discharge processing method, that is, the flexible printed electronic substrate film in roll form is continuously unfolded for printing to complete the processing and manufacturing of electronic products. The roll-to-roll printing process technology can accurately transfer the circuit diagram to the surface of the unrolled flexible film unit that is transmitted forward under tension through the pressure transfer of conductive ink, and completes the precision coating and multi-layer overprinting during the film transmission process, which enables the large-scale, large-area, high-efficiency and high-precision printing preparation of flexible printed electronic films. However, in the existing roll-to-roll flexible electronic printing equipment, when the coating roller transfers the ink to the film material in the conveying process, the friction between the coating roller and the film material at the moment when the coating roller contacts the film material will increase the resistance of the film material transportation, thereby affecting the printing effect, and the existing flexible electronic printing equipment usually adopts soft wheel printing and screen printing, and the printing accuracy is low. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a transfer device and a high-precision roll-to-roll flexible electronic printing equipment, aiming to solve the problem of how to improve the printing effect of the transfer device and the secondary printing overprint accuracy.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] In a first aspect, a transfer device is provided for printing ink onto a film material in a conveying process, the transfer device comprising a support, a coating roller rotatably mounted on the support, a transfer roller rotatably mounted on the support, a first driving structure for driving the coating roller to rotate, and a second driving structure for driving the transfer roller to rotate, the coating roller and the transfer roller are respectively connected to an output end of the first driving structure and an output end of the second driving structure, a conveying space for the film material is formed between the roller surface of the coating roller and the roller surface of the transfer roller, a pit for filling the ink is provided on the roller surface of the coating roller, the coating roller and the transfer roller rotate in opposite directions and clamp the film material together to press the ink in the pit onto the surface of the film material.

[0008] In some embodiments, the transfer device further includes an ink scraping structure, which is disposed on the support and adjacent to the coating roller, and is used to scrape off the ink on the roller surface of the coating roller except for the pits.

[0009] In some embodiments, the transfer device also includes an ink tank, which is disposed on the support and stores the ink. During the rotation of the coating roller, the roller surface of the coating roller facing the ink tank is immersed in the ink so that the ink in the ink tank is filled into the pit.

[0010] In some embodiments, the transfer device includes a first mounting seat slidably disposed on the support, the coating roller is disposed on the first mounting seat, and the transfer device also includes a third driving structure, the first mounting seat is connected to the output end of the third driving structure, and the third driving structure is used to drive the mounting seat to move along a first direction, and the first direction is parallel to the extension direction of the coating roller and the transfer roller.

[0011] In some embodiments, the transfer device also includes an image sensor and a control structure, the image sensor is communicatively connected to the control structure, the third drive structure is communicatively connected to the control structure, the control structure is used to control the third drive structure according to the image sensor, and the image sensor is used to capture the image of the film material to monitor the printing condition of the film material.

[0012] In some embodiments, the transfer device also includes a fine-tuning structure and a second mounting seat, the support includes a base plate, the second mounting seat is slidably connected to the top surface of the base plate, the first mounting seat is slidably connected to the top surface of the second mounting seat, the fine-tuning structure is arranged on the base plate, the fine-tuning structure is used to drive the second mounting seat to move along a second direction so that the coating roller is close to or away from the transfer roller, and the second direction is perpendicular to the first direction.

[0013] In some embodiments, the support includes a first seat body, the first driving structure is fixed on the first seat body, the first seat body is rotatably provided with a rotating platform, the rotating platform is connected to the rotating output shaft of the first driving structure, the transfer device also includes an adjusting screw, the adjusting screw passes through the rotating platform, one end of the adjusting screw extends out of the first seat body, and the other end of the adjusting screw extends toward the coating roller, the adjusting screw is threadedly connected to the rotating platform so that the adjusting screw is locked or separated from one end of the coating roller, and the extension direction of the adjusting screw is parallel to the extension direction of the rotating output shaft.

[0014] In some embodiments, the support also includes a second seat body spaced apart from the first seat body, the coating roller is arranged between the first seat body and the second seat body, and the other end of the coating roller is rotatably connected to the second seat body, and the transfer device also includes a first adjustment structure and a second adjustment structure respectively arranged on the first seat body and the second seat body, the first adjustment structure is used to adjust the position of one end of the coating roller relative to the first seat body, and the second adjustment structure is used to adjust the position of the other end of the coating roller relative to the second seat body, so as to adjust the parallelism of the coating roller and the transfer roller.

[0015] In some embodiments, the rotating platform includes a turntable rotatably connected to the first seat body and a fixed block arranged on the side of the turntable facing the coating roller, the fixed block can move on the surface of the turntable, the first adjustment structure is adjacent to the fixed block, the first adjustment structure includes a locking seat, a rotating wheel, a locking bolt and a stop column, the stop column and the locking seat are arranged on opposite sides of the fixed block, the rotating wheel is rotatably arranged on the side of the locking seat close to the fixed block, the rotating wheel is in contact with the fixed block, the locking bolt is movably connected to the locking seat, and the locking bolt is used to lock or unlock the rotating wheel.

[0016] In a second aspect, a high-precision roll-to-roll flexible electronic printing equipment is provided, which includes the above-mentioned transfer device.

[0017] The transfer device provided by the present application has a coating roller and a transfer roller that rotate synchronously and clamp the film material, so that the ink in the pits can be gradually pressed onto the surface of the film material along the length direction of the film material at the tangent position of the coating roller and the transfer roller, and because the rotation directions of the coating roller and the transfer roller are arranged in opposite directions, the rotational friction between the coating roller and the film material can be effectively reduced, and the resistance to the film material transportation can be effectively reduced, thereby improving the printing effect of the transfer device; and the transfer device of the present application adopts gravure printing, which can improve printing accuracy compared with soft wheel printing and screen printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic diagram of the overall structure of the transfer device provided in an embodiment of the present application;

[0020] Figure 2 yes Figure 1 A right view structural diagram of ;

[0021] Figure 3 It is a partial structural schematic diagram of a transfer device provided in one embodiment of the present application;

[0022] Figure 4 is a partial structural schematic diagram of a transfer device provided in another embodiment of the present application;

[0023] Figure 5 yes Figure 1 Schematic diagram of the structure of the ink scraper.

[0024] Among them, the reference numerals in the figure are:

[0025] 10. Support; 11. First seat body; 12. Second seat body; 13. Third seat body; 14. Bottom plate; 141. Second guide rail; 15. Rotating platform; 151. Turntable; 152. Fixed block; 16. Adjusting screw; 20. Coating roller; 30. Transfer roller; 41. First driving structure; 42. Second driving structure; 43. Third driving structure; 50. Ink scraping structure; 511. Scraping blade; 512. Blade lining; 513. Blade pressing block; 52. Rotating shaft; 53. Connecting rod; 54. Scraper seat body; 55. Lifting cylinder; 56. Fine-tuning platform; 57. Swinging motor; 60. Ink tank; 71. First mounting seat; 711. First sliding connection block; 72. Second mounting seat; 721. First guide rail; 722. Second sliding connection block; 73. Fine-tuning structure; 81. Driving motor unit; 82. Image sensor; 91. First adjusting structure; 911. Locking seat; 912. Rotating wheel; 914. Stop column; 92. Second adjusting structure; 200. Film material. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work 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 drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] See also Figures 1 to 5 , an embodiment of the present application provides a transfer device for printing ink onto a film material 200 in a conveying process, the transfer device includes a support 10, a coating roller 20 rotatably mounted on the support 10, a transfer roller 30 rotatably mounted on the support 10, a first driving structure 41 for driving the coating roller 20 to rotate, and a second driving structure 42 for driving the transfer roller 30 to rotate, the coating roller 20 and the transfer roller 30 are respectively connected to the output end of the first driving structure 41 and the output end of the second driving structure 42, a conveying space for the film material 200 is formed between the coating roller 20 and the transfer roller 30, a pit for filling ink is provided on the roller surface of the coating roller 20, the coating roller 20 and the transfer roller 30 rotate in opposite directions and clamp the film material 200 together to press the ink in the pit onto the film material 200.

[0031] The transfer device provided by the present application has a coating roller 20 and a transfer roller 30 that rotate synchronously and clamp the film material 200, so that the ink in the pits can be gradually pressed onto the surface of the film material 200 along the length direction of the film material 200 at the tangential position of the coating roller 20 and the transfer roller 30, and because the rotation directions of the coating roller 20 and the transfer roller 30 are arranged in opposite directions, the rotational friction between the coating roller 20 and the film material 200 can be effectively reduced, and the resistance to the transportation of the film material 200 can be effectively reduced, thereby improving the printing effect of the transfer device; and the transfer device of the present application adopts gravure printing, which can improve printing accuracy.

[0032] It can be understood that the coating roller 20 and the transfer roller 30 rotate in opposite directions, that is, the coating roller 20 rotates in the counterclockwise direction, the transfer roller 30 rotates in the clockwise direction, and the extension direction of the coating roller 20 is parallel to the extension direction of the transfer roller 30. In addition, in the embodiment of the present application, the first drive structure 41 and the second drive structure 42 are both servo motors.

[0033] Specifically, the present application selects ink with a fineness of less than 5 um and a viscosity of less than 70S as the experimental slurry, and uses a release film as the printing substrate.

[0034] In some embodiments, the transfer device further includes an ink scraping structure 50, which is disposed on the support 10 and adjacent to the coating roller 20, and is used to scrape off the ink on the roller surface of the coating roller 20 except for the pits. It can be understood that only the ink in the pits is related to the shape of the printed circuit, and the roller surface of the coating roller 20 except for the pits may also have ink, so by scraping off the roller surface of the coating roller 20 with the ink scraping structure 50, the excess ink on the roller surface can be scraped off without affecting the ink in the pits, and only the ink in the pits is retained.

[0035] In some embodiments, the transfer device also includes an ink tank 60, which is disposed on the support 10 and stores ink in the ink tank 60. During the rotation of the coating roller 20, the roller surface of the coating roller 20 facing the ink tank 60 is immersed in the ink so that the ink in the ink tank 60 is filled into the pit.

[0036] By providing the ink groove 60, the ink can be attached to the coating roller 20 during the rotation of the coating roller 20, the structure becomes simple and the volume is smaller, and because the pits on the roller surface of the coating roller 20 can be completely immersed in the ink, it can effectively ensure that the pits are completely filled with ink, thereby improving the transfer effect, and the provision of the ink groove 60 makes debugging and maintenance more convenient.

[0037] In other possible embodiments, an ink pump may be provided to allow the ink to adhere to the coating roller 20 by spraying ink, or an ink roller immersed in an ink tank 60 may transfer ink to the coating roller 20. The present application does not impose a sole limitation on the manner in which the coating roller 20 obtains ink.

[0038] Specifically, Figure 5As shown, the ink scraping structure 50 includes a scraper assembly, a rotating shaft 52, a connecting rod 53, a scraper base 54 and a lifting cylinder 55. The scraper assembly is connected to the rotating shaft 52, and the rotating shaft 52 is rotatably mounted on the scraper base 54. The scraper assembly can rotate with the rotating shaft 52. The connecting rod 53 is connected to the rotating shaft 52. The rod body of the connecting rod 53 is connected to the output end of the lifting cylinder 55. The lifting cylinder 55 is used to lift the rod body of the connecting rod 53 to drive the rotating shaft 52 and the scraper assembly to rotate, so as to achieve the scraper assembly to fit the coating roller 20 or to separate from the coating roller 20. Further, the rotating shaft 52 is installed on the fine-tuning platform 56. By adjusting the fine-tuning screw, the front and rear position and the up and down position of the rotating shaft 52 can be adjusted, so that the position of the scraper assembly can be adjusted to make the scraper assembly fit better with the coating roller 20.

[0039] The ink scraping structure 50 further includes a swing motor 57, and the scraper seat body 54 is slidably arranged. The scraper seat body 54 is connected to the output end of the swing motor 57. The swing motor 57 can drive the scraper seat body 54 to move left and right, thereby driving the scraper assembly to move left and right, thereby effectively alleviating the problem of easy wear of the scraper assembly. Specifically, the scraper seat body 54 and the output end of the swing motor 57 can be connected through an eccentric wheel, so that the rotational motion can be converted into the linear motion of the scraper seat body 54 through the eccentric wheel.

[0040] Specifically, the scraper assembly includes a scraper blade 511, a blade liner 512 and a blade pressure block 513. The scraper blade 511 extends out of the blade liner 512, and the scraper blade 511 exceeds the blade liner 512 by 3mm to 5mm. The blade liner 512 hangs out of the blade pressure block 513 by 7mm to 25mm. The blade pressure block 513 is connected to the rotating shaft 52. The specific values ​​can be flexibly adjusted according to the diameter of the coating roller 20, the ink scraping speed, the viscosity of the ink, etc.

[0041] In order to scrape the ink cleanly, a hard knife cannot do it, so the scraper blade 511 of the present application adopts a soft blade and can adopt a grinding method. The scraper blade 511 is worn in the process of contacting the roller, and the grinding process is completed at the same time. The entire scraper blade 511 can be seamlessly attached to the roller surface to scrape the ink. In addition, in order to achieve a better and faster degree of cleaning of the ink, the scraper assembly is installed, and the force is applied to the coating roller 20. The coating roller 20 runs at high speed for 20 minutes, and then the ink is added for transfer.

[0042] Furthermore, if Figure 3 and Figure 4As shown, the transfer device includes a first mounting seat 71 slidably arranged on the support 10, and the coating roller 20 is arranged on the first mounting seat 71. The transfer device also includes a third driving structure 43. The first mounting seat 71 is connected to the output end of the third driving structure 43. The third driving structure 43 is used to drive the mounting seat to move along the first direction a. The first direction a is parallel to the extension direction of the coating roller 20 and the transfer roller 30. Therefore, by setting the third driving structure 43, the relative positions of the coating roller 20 and the transfer roller 30 along the first direction a can be adjusted.

[0043] Furthermore, the transfer device also includes an image sensor 82 and a control structure, the image sensor 82 is connected to the control structure for communication, the third drive structure 43 is connected to the control structure for communication, the control structure is used to control the third drive structure 43 according to the image sensor 82, and the image sensor 82 is used to collect the image of the film material 200 to monitor the printing condition of the film material 200. Specifically, the image sensor 82 of the present application is a CCD (Charge coupled Device) camera.

[0044] It is understandable that the transfer device usually needs to perform overprinting, which means that a second printing is performed on the basis of the first printing, and the lines of the second printing are overlapped on the lines of the first printing, and the position deviation of the two printed lines affects the overprinting accuracy. In order to ensure the accuracy of overprinting, the present application sets an image sensor 82 for real-time monitoring. The image sensor 82 monitors the trend of the line in real time. By presetting the monitored line position or MARK point, if the overprinting deviates, the image sensor 82 can calculate the position offset and transmit the signal to the control structure. The control structure sends an instruction to the third drive structure 43. The third drive structure 43 responds and drives the coating roller 20 to move along the first direction a, so that the position of the coating roller 20 is accurate, thereby improving the accuracy of the transfer. Furthermore, the transfer device also includes a drive motor unit 81, which can drive the image sensor 82 to move, thereby increasing the monitoring range of the image sensor 82.

[0045] In some embodiments, Figure 3 and Figure 4 As shown, the transfer device also includes a fine-tuning structure 73 and a second mounting seat 72, the support 10 includes a base plate 14, the second mounting seat 72 is slidably connected to the top surface of the base plate 14, the first mounting seat 71 is slidably connected to the top surface of the second mounting seat 72, the fine-tuning structure 73 is arranged on the base plate 14, the fine-tuning structure 73 is used to drive the second mounting seat 72 to move along the second direction b so that the coating roller 20 is close to or away from the transfer roller 30, and the second direction b is perpendicular to the first direction a.

[0046] The gap between the coating roller 20 and the transfer roller 30 can be adjusted by the fine-tuning structure 73. For example, when the gap between the coating roller 20 and the transfer roller 30 is large, the coating roller 20 is moved closer to the transfer roller 30 by the fine-tuning structure 73, thereby reducing the gap between the coating roller 20 and the transfer roller 30 to avoid the gap being too large to affect the transfer effect.

[0047] Optionally, the fine-tuning structure 73 can be a fine-tuning handle, and the fine-tuning handle is connected to a contact rod, which contacts the side of the second mounting seat 72. By rotating the fine-tuning handle, the contact rod can move forward and push the second mounting seat 72 forward.

[0048] Furthermore, a first guide rail 721 is provided on the top surface of the second mounting seat 72, and an extension direction of the first guide rail 721 is parallel to the first direction a. The first mounting seat 71 is connected to a first sliding connection block 711, and the first sliding connection block 711 is slidingly connected to the first guide rail 721. The first sliding connection block 711 cooperates with the first guide rail 721 to effectively reduce the resistance encountered by the first mounting seat 71 during movement, so that the movement of the coating roller 20 is smoother, thereby improving the adjustment efficiency.

[0049] Specifically, there are two groups of first sliding connection blocks 711 and first guide rails 721. The two first sliding connection blocks 711 are respectively connected to the two ends of the first mounting seat 71. The two groups of first guide rails 721 are parallel to each other and arranged at intervals. The two first sliding connection blocks 711 are respectively slidably connected to the two groups of first guide rails 721, thereby improving the stability of the movement of the coating roller 20, keeping the coating roller 20 balanced, and preventing the coating roller 20 from shifting during the movement.

[0050] Furthermore, a second guide rail 141 is provided on the top surface of the base plate 14, and the extension direction of the second guide rail 141 is parallel to the second direction b. The second mounting seat 72 is connected to a second sliding connection block 722, and the second sliding connection block 722 is slidingly connected to the second guide rail 141. The second sliding connection block 722 cooperates with the second guide rail 141 to effectively reduce the resistance encountered by the second mounting seat 72 during movement, so that the movement of the coating roller 20 is smoother, thereby improving the adjustment efficiency.

[0051] Specifically, the number of the second sliding connection blocks 722 and the number of the second guide rails 141 are both two groups, the two second sliding connection blocks 722 are respectively connected to the two ends of the second mounting seat 72, the two groups of second guide rails 141 are parallel to each other and arranged at intervals, and the two second sliding connection blocks 722 are respectively slidably connected to the two groups of second guide rails 141, thereby improving the stability of the movement of the coating roller 20, keeping the coating roller 20 balanced, and preventing the coating roller 20 from shifting during the movement.

[0052] In some embodiments, the support 10 includes a first base body 11, a first driving structure 41 is fixed on the first base body 11, a rotating platform 15 is rotatably provided on the first base body 11, and the rotating platform 15 is connected to the rotating output shaft of the first driving structure 41, and the transfer device also includes an adjusting screw 16, the adjusting screw 16 passes through the rotating platform 15, one end of the adjusting screw 16 extends out of the first base body 11, and the other end of the adjusting screw 16 extends toward the coating roller 20, the adjusting screw 16 is threadedly connected to the rotating platform 15 so that the adjusting screw 16 is locked or separated from one end of the coating roller 20, and the extension direction of the adjusting screw 16 is parallel to the extension direction of the rotating output shaft. When the adjusting screw 16 is locked with one end of the coating roller 20, the first driving structure 41 drives the rotating platform 15 to rotate, and the rotating platform 15 drives the adjusting screw 16 to rotate, thereby driving the coating roller 20 to rotate synchronously,

[0053] In actual use, the adjusting screw 16 can be separated from the coating roller 20 by screwing the adjusting screw 16, and the adjusting screw 16 can be screwed out of the rotating platform 15, at which time the coating roller 20 can be removed. When installing, the adjusting screw 16 only needs to be screwed and locked with the rotating platform 15 and the coating roller 20 to complete the installation. The installation process is simple, with few steps and easy operation, and the replacement efficiency is high, which is conducive to improving production efficiency. In addition, since the extension direction of the adjusting screw 16 is parallel to the extension direction of the rotating output shaft, one end of the adjusting screw 16 can extend out of the first seat body 11 and will not be interfered by the first driving structure 41, which is convenient for the operator to adjust the adjusting screw 16.

[0054] It can be understood that, since the transfer roller 30 does not need to be replaced frequently, the second driving structure 42 can be directly connected to the transfer roller 30 , which is more convenient to design and install.

[0055] In some embodiments, the support 10 also includes a second seat body 12 spaced apart from the first seat body 11, the coating roller 20 is arranged between the first seat body 11 and the second seat body 12, and the other end of the coating roller 20 is rotatably connected to the second seat body 12, and the transfer device also includes a first adjustment structure 91 and a second adjustment structure 92 respectively arranged on the first seat body 11 and the second seat body 12, the first adjustment structure 91 is used to adjust the position of one end of the coating roller 20 relative to the first seat body 11, and the second adjustment structure 92 is used to adjust the position of the other end of the coating roller 20 relative to the second seat body 12, so that the first adjustment structure 91 and the second adjustment structure 92 cooperate with each other to fine-tune the coating roller 20, thereby adjusting the parallelism of the coating roller 20 and the transfer roller 30.

[0056] In some embodiments, the rotating platform 15 includes a turntable 151 rotatably connected to the first seat body 11 and a fixed block 152 arranged on the side of the turntable 151 facing the coating roller 20, the fixed block 152 can move on the surface of the turntable 151, the first adjustment structure 91 is adjacent to the fixed block 152, the first adjustment structure 91 includes a locking seat 911, a rotating wheel 912, a locking bolt 913 and a blocking column 914, the rotating wheel 912 is rotatably arranged on the side of the locking seat 911 close to the fixed block 152, the rotating wheel 912 is in contact with the fixed block 152, the locking bolt 913 is movably connected to the locking seat 911, and the locking bolt 913 is used to lock or unlock the rotating wheel 912 so that the rotating wheel 912 and the blocking column 914 jointly clamp the fixed block 152 to abut against it, or the rotating wheel 912 is rollingly connected to the fixed block 152.

[0057] Specifically, there are two groups of first adjustment structures 91, and there are two groups of blocking columns 914. The fixed block 152 is a long block structure. The two groups of first adjustment structures 91 are respectively arranged on the upper and lower sides of the fixed block 152, and the two groups of first adjustment structures 91 are respectively arranged at both ends of the fixed block 152. When the locking bolt 913 unlocks the rotating wheel 912, the fixed block 152 is rollingly connected with the two rotating wheels 912, and the fixed block 152 can move left and right between the two groups of first adjustment structures 91, so as to fine-tune the position of one end of the coating roller 20; and when the locking bolt 913 locks the rotating wheel 912, the two rotating wheels 912 are stuck and no longer rotate, and the rotating wheels 912 and blocking columns 914 corresponding to the two sides of the fixed block 152 jointly clamp the fixed block 152, and the fixed block 152 is locked and cannot move left and right.

[0058] In addition, the support 10 further includes a third seat body 13, which is disposed between the first seat body 11 and the second seat body 12. The adjusting screw 16 sequentially passes through the first seat body 11 and the third seat body 13 and is connected to the coating roller 20. The third seat body 13 can support the adjusting screw 16. In addition, a bearing can be disposed on the third seat body 13, and the bearing sleeve is disposed on the adjusting screw 16, which can improve the smoothness of the rotation of the adjusting screw 16.

[0059] The present invention also proposes a high-precision roll-to-roll flexible electronic printing equipment, which includes a transfer device. The specific structure of the transfer device refers to the above embodiment. Since the 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 by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0060] To summarize, in the transfer device provided by the present application, the coating roller 20 and the transfer roller 30 rotate synchronously and clamp the film material 200, so that the ink in the pits can be gradually pressed onto the surface of the film material 200 along the length direction of the film material 200 at the tangential position of the coating roller 20 and the transfer roller 30, and because the rotation directions of the coating roller 20 and the transfer roller 30 are arranged in opposite directions, the rotational friction between the coating roller 20 and the film material 200 can be effectively reduced, and the resistance to the transportation of the film material 200 can be effectively reduced, thereby improving the printing effect of the transfer device; and the transfer device of the present application adopts gravure printing, which can improve printing accuracy.

[0061] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A transfer device for printing ink onto a film material (200) during transportation, Features: The transfer device comprises a support (10), a coating roller (20) rotatably mounted on the support (10), a transfer roller (30) rotatably mounted on the support (10), a first driving structure (41) for driving the coating roller (20) to rotate, and a second driving structure (42) for driving the transfer roller (30) to rotate. The coating roller (20) and the transfer roller (30) are respectively connected to the output end of the first driving structure (41) and the output end of the second driving structure (42). A conveying space for the film material (200) is formed between the roller surface of the coating roller (20) and the roller surface of the transfer roller (30). A pit for filling the ink is provided on the roller surface of the coating roller (20). The coating roller (20) and the transfer roller (30) rotate in opposite directions and clamp the film material (200) together to press the ink in the pit onto the surface of the film material (200).

2. The transfer device according to claim 1, Features: The transfer device further comprises an ink scraping structure (50), wherein the ink scraping structure (50) is arranged on the support (10) and is adjacent to the coating roller (20), and the ink scraping structure (50) is used to scrape off the ink on the roller surface of the coating roller (20) except for the pits.

3. The transfer device according to claim 2, Features: The transfer device also includes an ink tank (60), which is arranged on the support (10) and stores the ink in the ink tank (60). During the rotation of the coating roller (20), the roller surface of the coating roller (20) facing the ink tank (60) is immersed in the ink so that the ink in the ink tank (60) is filled into the pit.

4. The transfer device according to claim 1, Features: The transfer device comprises a first mounting seat (71) slidably arranged on the support (10), the coating roller (20) being arranged on the first mounting seat (71), and the transfer device further comprises a third driving structure (43), the first mounting seat (71) being connected to an output end of the third driving structure (43), and the third driving structure (43) being used to drive the mounting seat to move along a first direction, the first direction being parallel to an extension direction of the coating roller (20) and the transfer roller (30).

5. The transfer device according to claim 4, Features: The transfer device also includes an image sensor (82) and a control structure, wherein the image sensor (82) is communicatively connected to the control structure, and the third drive structure (43) is communicatively connected to the control structure, and the control structure is used to control the third drive structure (43) according to the image sensor (82), and the image sensor (82) is used to capture an image of the film material (200) to monitor the printing condition of the film material (200).

6. The transfer device according to claim 5, Features: The transfer device further comprises a fine-tuning structure (73) and a second mounting seat (72); the support (10) comprises a base plate (14); the second mounting seat (72) is slidably connected to the top surface of the base plate (14); the first mounting seat (71) is slidably connected to the top surface of the second mounting seat (72); the fine-tuning structure (73) is arranged on the base plate (14); the fine-tuning structure (73) is used to drive the second mounting seat (72) to move along a second direction so that the coating roller (20) is close to or away from the transfer roller (30); the second direction is perpendicular to the first direction.

7. The transfer device according to any one of claims 1 to 6, Features: The support (10) comprises a first base body (11), the first driving structure (41) is fixed on the first base body (11), the first base body (11) is rotatably provided with a rotating platform (15), the rotating platform (15) is connected to the rotating output shaft of the first driving structure (41), the transfer device also comprises an adjusting screw (16), the adjusting screw (16) passes through the rotating platform (15), one end of the adjusting screw (16) extends out of the first base body (11), the other end of the adjusting screw (16) extends toward the coating roller (20), the adjusting screw (16) is threadedly connected to the rotating platform (15), so that the adjusting screw (16) and one end of the coating roller (20) are locked or separated, and the extending direction of the adjusting screw (16) is parallel to the extending direction of the rotating output shaft.

8. The transfer device according to claim 7, Features: The support (10) further comprises a second base body (12) spaced apart from the first base body (11); the coating roller (20) is arranged between the first base body (11) and the second base body (12); the other end of the coating roller (20) is rotatably connected to the second base body (12); the transfer device further comprises a first adjustment structure (91) and a second adjustment structure (92) respectively arranged on the first base body (11) and the second base body (12); the first adjustment structure (91) is used to adjust the position of one end of the coating roller (20) relative to the first base body (11); the second adjustment structure (92) is used to adjust the position of the other end of the coating roller (20) relative to the second base body (12), so as to adjust the parallelism between the coating roller (20) and the transfer roller (30).

9. The transfer device according to claim 8, Features: The rotating platform (15) comprises a rotating disk (151) rotatably connected to the first base body (11) and a fixed block (152) arranged on the side of the rotating disk (151) facing the coating roller (20), wherein the fixed block (152) can move on the surface of the rotating disk (151), the first adjusting structure (91) is adjacent to the fixed block (152), and the first adjusting structure (91) comprises a locking seat (911), a rotating wheel (912), a locking bolt and A blocking column (914), wherein the blocking column (914) and the locking seat (911) are arranged on opposite sides of the fixed block (152), the rotating wheel (912) is rotatably arranged on a side of the locking seat (911) close to the fixed block (152), the rotating wheel (912) is in contact with the fixed block (152), the locking bolt is movably connected to the locking seat (911), and the locking bolt (913) is used to lock or unlock the rotating wheel (912).

10. A high-precision roll-to-roll flexible electronic printing equipment, Features: It comprises a transfer device as claimed in any one of claims 1 to 9.

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