A flexible electronic gravure printing plate roller adjustment mechanism, method and printing press

Abstract

The present application belongs to the technical fields of flexible electronic preparation, and discloses a flexible electronic gravure printing plate roller adjusting mechanism, method and printing machine. The adjusting mechanism comprises a plate roller, a pressure adjusting mechanism and a multi-layer printing plate roller transverse adjusting mechanism. The pressure adjusting mechanism comprises a fixed plate, a wedge-shaped adjusting plate, a wedge-shaped fixed block and a first linear driving structure. The two ends of the plate roller are mounted on a plate roller mounting seat, the plate roller mounting seat is supported on the fixed plate and a pressure sensor is arranged between the plate roller mounting seat and the fixed plate. The top of the wedge-shaped adjusting plate is provided with a wedge-shaped linear guide rail, and the fixed plate is slidably connected to the wedge-shaped linear guide rail through the wedge-shaped fixed block. The first linear driving structure drives the wedge-shaped adjusting plate to move, so as to realize the up-down movement of the plate roller and further realize the pressure regulation and control of the plate roller. The present application can realize the precise pressure regulation and control of the gravure printing plate roller and the axial alignment adjustment of the plate roller during multi-layer printing, so as to be applicable to the gravure printing manufacturing of flexible electronic devices and be conducive to promoting the industrialization process of the flexible electronic device printing technology.

Description

Technical Field

[0001] This invention belongs to the technical field of flexible electronics fabrication, and more specifically, relates to a flexible electronic gravure printing plate roller adjustment mechanism, method, and printing machine. Background Technology

[0002] Printed flexible electronics is an important branch of the flexible electronics field and a core pathway to achieving low-cost, large-area, mass production of flexible devices. It is crucial for driving the electronics industry towards lightweight and green development, thereby enabling ubiquitous applications such as wearable medical devices and smart sensors. Its necessity lies in its ability to significantly reduce energy consumption and material waste through additive manufacturing, while also being compatible with roll-to-roll processes. This provides an economically feasible solution for massive applications such as the Internet of Things and smart packaging. Among various printing processes, gravure printing, thanks to its stable and high-efficiency production characteristics, is considered an important means to achieve roll-to-roll mass production of flexible electronic devices.

[0003] However, the performance of flexible electronic devices fabricated using gravure printing is constrained by the control precision of various process parameters. Among these, printing pressure has a crucial impact on the electrical performance of gravure-printed flexible electronic devices: sufficient and stable pressure ensures good contact between the printing plate / screen and the substrate, allowing for full ink transfer and improving pattern integrity and ink layer thickness uniformity. For conductive inks, moderate pressure helps nanoparticles to make close contact, forming better conductive pathways and improving conductivity. Simultaneously, it helps obtain clear pattern edges and maintain high resolution. Insufficient pressure leads to incomplete ink transfer, pattern defects, and uneven ink layers, severely reducing the consistency and reliability of device performance. Excessive pressure causes pattern spreading, ink bleeding, or "smudging," reducing resolution and even causing short circuits.

[0004] Currently, most gravure printing systems on the market are used for traditional packaging printing or coating, with few used for the production and manufacturing of flexible electronic devices. Packaging printing gravure printing machines mainly use color inks with relatively simple rheological properties, and do not have high requirements for the gravure roller pressure control function. Therefore, existing gravure printing equipment usually does not have a roller pressure control system, resulting in the lack of a precise gravure roller pressure control system in current gravure printing systems used for production and manufacturing. Consequently, there is a lack of dedicated gravure printing equipment and systems for the production and manufacturing of flexible electronic devices, which seriously restricts the industrialization process of flexible electronic device printing technology. Summary of the Invention

[0005] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a flexible electronic gravure printing roller adjustment mechanism, method and printing machine, which solves the problem that the current gravure printing system used for production and manufacturing lacks a precise control system for gravure roller pressure, thus lacking dedicated gravure printing equipment and systems for the production and manufacturing of flexible electronic devices, which seriously restricts the industrialization process of flexible electronic device printing technology.

[0006] To achieve the above objectives, according to one aspect of the present invention, a flexible electronic gravure printing plate roller adjustment mechanism is provided, comprising a plate roller and a pressure adjustment mechanism, wherein the pressure adjustment mechanism comprises a fixed plate, a wedge-shaped adjustment plate, a wedge-shaped fixing block and a first linear drive structure; both ends of the plate roller are rotatably mounted on a plate roller mounting seat, the plate roller mounting seat is supported on the fixed plate and a pressure sensor is provided between the plate roller mounting seat and the fixed plate; The wedge-shaped adjusting plate is movably disposed below the fixed plate. A wedge-shaped linear guide rail is provided on the top of the wedge-shaped adjusting plate near the fixed plate. The fixed plate is slidably connected to the wedge-shaped linear guide rail through the wedge-shaped fixing block, so that the fixed plate is in a horizontal state. The first linear drive structure is connected to the wedge-shaped adjusting plate and is used to drive the wedge-shaped adjusting plate to move, thereby realizing the up and down movement of the fixed plate and the printing roller, and then cooperating with the pressure sensor to realize the control of the printing roller pressure.

[0007] According to the flexible electronic gravure printing roller adjustment mechanism provided by the present invention, the wedge-shaped adjustment plate, the wedge-shaped fixing block and the first linear drive structure are respectively provided below the fixing plate and at the corresponding positions of the two ends of the roller; the pressure sensor is respectively provided between the roller mounting seat at both ends of the roller and the fixing plate for real-time detection of the printing pressure at both ends of the roller; The pressure sensors installed at the printing roller mounting seats at both ends of the printing roller, and the printing pressure adjustment mechanism based on the wedge-shaped adjustment plate installed below the fixed plate corresponding to both ends of the printing roller, are used to realize independent and precise control of the printing pressure at both ends of the printing roller during the printing process, so as to ensure the consistency of printing pressure along the entire axial direction of the printing roller.

[0008] According to the flexible electronic gravure printing roller adjustment mechanism provided by the present invention, the top of the wedge-shaped adjustment plate is provided with two parallel wedge-shaped linear guides of the same height, and the fixing plate is slidably connected to the two wedge-shaped linear guides through two wedge-shaped fixing blocks.

[0009] According to the flexible electronic gravure printing roller adjustment mechanism provided by the present invention, the pressure adjustment mechanism further includes a vertical fixing block and a vertical linear guide rail; the vertical fixing block is connected to the fixing plate, and the vertical fixing block is slidably connected to the vertical linear guide rail fixed on the equipment foundation, the vertical linear guide rail being arranged in the up-down direction.

[0010] According to the flexible electronic gravure printing plate roller adjustment mechanism provided by the present invention, the wedge-shaped adjustment plate is slidably disposed on the bottom of the base plate away from the fixed plate, and the first linear drive structure includes a plate roller lifting motor and a plate roller lifting screw connected by transmission, and a connecting seat is matched and connected to the plate roller lifting screw, and the connecting seat is connected to the wedge-shaped adjustment plate.

[0011] The flexible electronic gravure printing plate roller adjustment mechanism provided by the present invention further includes a plate roller axial alignment printing adjustment mechanism for use in multi-layer printing. The plate roller axial alignment printing adjustment mechanism includes a plate roller mounting plate and a second linear drive structure disposed between the plate roller mounting base and the fixed plate. The pressure sensor is disposed between the plate roller mounting base and the plate roller mounting plate. An alignment linear guide rail is provided on the fixed plate along the axial direction of the plate roller. The plate roller mounting plate is slidably connected to the alignment linear guide rail. The second linear drive structure is used to drive the plate roller mounting plate and the plate roller to move along the alignment linear guide rail to achieve axial alignment adjustment of the plate roller during multi-layer printing.

[0012] According to the flexible electronic gravure printing plate roller adjustment mechanism provided by the present invention, multiple alignment linear guides are arranged parallel and spaced apart on the fixed plate, and the plate roller mounting plate is slidably connected to the multiple alignment linear guides respectively. The second linear drive structure includes an alignment motor and an alignment lead screw connected by a transmission, wherein the nut seat on the alignment lead screw is connected to the printing roller mounting plate; The printing roller is connected to a drive motor, which is mounted on the printing roller mounting plate via a motor mounting bracket.

[0013] According to another aspect of the present invention, a method for adjusting a flexible electronic gravure printing plate roller is provided, based on the flexible electronic gravure printing plate roller adjusting mechanism described in any of the preceding claims, the method comprising: The pressure of the printing roller is monitored in real time using a pressure sensor. When there is a deviation between the real-time pressure obtained by the pressure sensor and the preset pressure, the first linear drive structure drives the wedge adjustment plate to move to adjust the height of the printing roller and thus adjust the pressure of the printing roller until the real-time pressure is consistent with the preset pressure.

[0014] According to another aspect of the present invention, a flexible electronic gravure printing machine is provided, comprising the flexible electronic gravure printing plate roller adjustment mechanism as described in any of the above claims, and further comprising a traction roller, a front upright plate, and a rear upright plate, wherein the front upright plate and the rear upright plate are disposed at both ends of the plate roller, the plate roller mounting seat is located between the front upright plate and the rear upright plate, the traction roller is in contact with the plate roller and one end is rotatably mounted on the front upright plate and the other end is rotatably mounted on the rear upright plate, and the printing substrate is used to pass through the traction roller and the plate roller for printing.

[0015] The flexible electronic gravure printing press provided by the present invention further includes a doctor blade assembly, an adjusting roller assembly, and an ink supply assembly; the doctor blade assembly is correspondingly arranged with the printing plate and is used to perform a doctor blade operation; the adjusting roller assembly includes a plurality of rollers rotatably disposed between the front upright plate and the rear upright plate and whose axial direction is parallel to the axial direction of the printing plate, for bypassing the printing substrate to adjust the wrap angle of the printing substrate passing through the traction roller; the ink supply assembly is installed on the front upright plate and / or the rear upright plate and is used to supply printing ink.

[0016] Overall, compared with the prior art, the flexible electronic gravure printing roller adjustment mechanism, method, and printing press provided by the present invention offer the following advantages: 1. By setting up a wedge-shaped adjusting plate, a wedge-shaped linear guide rail, and a wedge-shaped fixing block, the fixing plate supporting the printing roller is supported on the wedge-shaped adjusting plate. The vertical position of the printing roller can be adjusted by moving the wedge-shaped adjusting plate to adjust the pressure of the printing roller. In addition, in conjunction with a pressure sensor, the pressure of the printing roller can be precisely controlled. This structure can achieve precise control of the pressure of the gravure printing roller, and thus can be applied to the gravure printing manufacturing of flexible electronic devices, which is conducive to promoting the industrialization process of flexible electronic device printing technology. 2. Pressure sensors are installed at both ends of the printing roller to monitor the pressure on both sides, and wedge-shaped adjustment plates are installed on both sides below the fixed plate to allow independent adjustment of the pressure on both sides. This facilitates the independent and precise control of the pressure on both sides of the printing roller along the axial direction, ensuring the uniformity of printing pressure on both sides of the printing roller along the axial direction. 3. By setting two parallel wedge-shaped linear guides of the same height on the top of the wedge-shaped adjusting plate and connecting them to the fixed plate, it is not only beneficial to improve the stability of the fixed plate, but also to maximize the vertical span of the wedge-shaped linear guides within the limited height range of the wedge-shaped adjusting plate, thereby increasing the height adjustment range of the printing roller to accommodate more functions. The wedge-shaped linear guide adopts a two-slope design, which, compared to a single-slope design, can achieve greater efficiency in raising the plate roller height within a limited guide travel. It also enhances the stability of the printing system in the direction perpendicular to the plate roller axis, ensuring the stability of the dynamic pressure adjustment structure when the plate roller is under pressure with the traction roller during the printing process. 4. By setting a vertical fixing block in conjunction with a vertical linear guide rail, the vertical movement direction of the fixing plate and the printing roller can be guided and limited, thereby better limiting the vertical movement of the printing roller and improving the stability and effectiveness of pressure regulation. 5. By setting up a printing roller axial alignment adjustment mechanism between the pressure adjustment mechanism and the printing roller, and utilizing the printing roller mounting plate and the second linear drive structure between the printing roller mounting base and the fixed plate, as well as the alignment linear guide structure along the printing roller axial direction on the fixed plate, precise control of the left and right positions of the printing roller along the axial direction can be achieved without interfering with the pressure adjustment, so as to realize the alignment adjustment function of the printing roller axial direction during multi-layer printing. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the flexible electronic gravure printing machine provided by the present invention.

[0018] Figure 2 This is a schematic diagram of the flexible electronic gravure printing roller adjustment mechanism provided by the present invention.

[0019] Figure 3 This is a side view schematic diagram of the flexible electronic gravure printing machine provided by the present invention.

[0020] Figure 4 This is a hardware block diagram for device control provided by the present invention.

[0021] Figure 5 This is a flowchart of the equipment control process provided by the present invention.

[0022] Figure 6 This is a schematic diagram of the printing roller pressure control and compensation principle provided by the present invention.

[0023] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Printing roller assembly; 2. Doctor blade assembly; 3. Adjusting roller assembly; 4. Ink supply assembly; 5. Front vertical plate; 6. Base plate; 7. Rear vertical plate; 311. Roller; 101. Front mounting base; 102. Bearing housing; 103. Traction roller; 104. Coupling; 105. Rear mounting base; 106. Reducer; 107. Drive motor; 108. Printing roller mounting base; 109. Bearing housing; 110. Pressure sensor; 111. Bearing housing; 112. Coupling; 113. Motor mounting base; 114. Printing roller mounting plate; 115. Alignment motor; 116. Reducer; 117. Motor mount 118. Mounting plate; 119. Coupling; 120. Alignment screw; 121. Fixing plate; 122. Wedge linear guide; 123. Wedge adjusting plate; 124. Bottom linear guide; 125. Alignment linear guide; 126. Vertical linear guide; 127. Vertical fixing block; 128. Wedge fixing block; 129. Printing roller lifting motor; 130. Reducer; 131. Coupling; 132. Printing roller lifting screw; 133. Connecting seat. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Please see Figure 1 and Figure 2 This embodiment provides a flexible electronic gravure printing plate roller adjustment mechanism, which includes a plate roller and a pressure adjustment mechanism. The pressure adjustment mechanism includes a fixed plate 120, a wedge-shaped adjustment plate 122, a wedge-shaped fixing block 127, and a first linear drive structure. The two ends of the plate roller are rotatably mounted on a plate roller mounting base 108, and the plate roller mounting base 108 is supported on the fixed plate 120. A pressure sensor 110 is provided between the plate roller mounting base 108 and the fixed plate 120. The wedge-shaped adjusting plate 122 is movably disposed below the fixed plate 120. The wedge-shaped adjusting plate 122 is provided with a wedge-shaped linear guide rail 121 near the top of the fixed plate 120. The fixed plate 120 is slidably connected to the wedge-shaped linear guide rail 121 through the wedge-shaped fixing block 127, so that the fixed plate 120 is in a horizontal state. The first linear drive structure is connected to the wedge-shaped adjusting plate 122 and is used to drive the wedge-shaped adjusting plate 122 to move, thereby realizing the up and down movement of the fixed plate 120 and the printing roller, and then cooperating with the pressure sensor 110 to realize the control of the printing roller pressure.

[0026] In this embodiment, the fixing plate 120 supports the printing roller mounting base 108, and the printing roller is rotatably mounted on the printing roller mounting base 108. A pressure sensor 110 is installed between the printing roller mounting base 108 and the fixing plate 120 to monitor and acquire the pressure on the printing roller in real time. The fixing plate 120 is supported on the wedge-shaped linear guide rail 121, i.e., the wedge-shaped adjusting plate 122, by a wedge-shaped fixing block 127. The top of the wedge-shaped adjusting plate 122 is inclined, and the wedge-shaped linear guide rail 121 is also inclined. The inclined shape refers to the inclination relative to the fixed plate 120. Correspondingly, the upper surface of the wedge-shaped fixing block 127 is horizontal, and the lower surface is inclined to match the wedge-shaped linear guide 121, so as to support the fixed plate 120 and slide relative to the wedge-shaped linear guide 121. Thus, when the wedge-shaped adjusting plate 122 moves, the wedge-shaped linear guide 121 moves relative to the wedge-shaped fixing block 127 and the fixed plate 120, so as to adjust the height of the fixed plate 120 accordingly. The pressure of the printing roller can be adjusted by adjusting the height.

[0027] This embodiment enables precise pressure control of the gravure printing roller, making it suitable for gravure printing manufacturing of flexible electronic devices. It facilitates the formation of a high-precision dedicated gravure printing equipment system for mass roll-to-roll manufacturing of flexible electronic devices, and enables the gravure printing manufacturing of flexible electronic devices with high automation, wide material and substrate compatibility, controllable microstructure and thickness, and a balance between high precision and low cost. It solves a key technical problem that the industry urgently needs to address.

[0028] In some embodiments, the wedge-shaped adjusting plate 122, the wedge-shaped fixing block 127, and the first linear drive structure are respectively provided below the fixing plate 120 at positions corresponding to both ends of the printing roller; the pressure sensor 110 is respectively provided between the printing roller mounting base 108 at both ends of the printing roller and the fixing plate 120 for real-time detection of the printing pressure at both ends of the printing roller; the pressure sensor 110 provided at the printing roller mounting base 108 at both ends of the printing roller, and the printing pressure adjustment mechanism based on the wedge-shaped adjusting plate 122 installed below the fixing plate 120 at positions corresponding to both ends of the printing roller, are used to realize independent and precise control of the printing pressure at both ends of the printing roller during the printing process, so as to ensure the consistency of the printing pressure along the entire axial direction of the printing roller.

[0029] This embodiment takes into account existing gravure printing equipment for packaging printing. Because the pressure control precision requirements are not on the same order of magnitude as those for gravure printing of flexible electronic devices, current equipment generally lacks pressure sensing and feedback functions for the printing roller, and even more so, it lacks real-time monitoring of pressure at both ends of the printing roller's axial direction; that is, it lacks pressure sensing and feedback functions for the gravure printing roller, and even more so, it lacks precise control of printing pressure on both sides of the printing roller's axial direction. Based on this, it is proposed to install pressure sensors 110 at both ends of the printing roller to monitor the pressure on both sides, and to install wedge-shaped adjusting plates 122 on both sides below the fixed plate 120. The fixed plate 120 is slidably connected to the wedge-shaped linear guide rail 121 on both sides via wedge-shaped fixing blocks 127. Each of the wedge-shaped adjusting plates 122 on both sides is connected to a first linear drive structure, allowing independent control of the pressure on both sides. This facilitates independent and precise control of the pressure on both sides of the printing roller's axial direction, ensuring the uniformity of printing pressure on both sides of the printing roller's axial direction.

[0030] In some embodiments, reference Figure 2 The top of the wedge-shaped adjusting plate 122 is provided with two parallel wedge-shaped linear guide rails 121 of the same height. By setting the wedge-shaped linear guide rails 121 as two parallel sections, the fixing plate 120 is slidably connected to the two wedge-shaped linear guide rails 121 through two wedge-shaped fixing blocks 127. This not only improves the connection stability and support stability of the fixing plate 120 through the two connection points, which is conducive to maintaining stable and smooth up and down movement during pressure adjustment, but also helps to maximize the vertical span of the wedge-shaped linear guide rails 121 within the limited height range of the wedge-shaped adjusting plate 122, thereby increasing the height adjustment range of the printing roller to accommodate more functions.

[0031] In some embodiments, the pressure regulating mechanism further includes a vertical fixing block 126 and a vertical linear guide rail 125; the vertical fixing block 126 is connected to the fixing plate 120, and the vertical fixing block 126 is slidably connected to the vertical linear guide rail 125 fixed on the equipment foundation, the vertical linear guide rail 125 being arranged in the vertical direction. The equipment foundation is a gravure printing-related equipment structure used for fixed installation, which remains fixed during pressure regulation. By setting the vertical fixing block 126 to cooperate with the vertical linear guide rail 125, the vertical movement direction of the fixing plate 120 and the printing roller can be guided and limited, thereby better limiting the vertical movement of the printing roller and improving the stability and effectiveness of pressure regulation.

[0032] Optionally, the fixing plate 120 is connected to the vertical fixing blocks 126 at corresponding positions at both ends of the printing roller.

[0033] In some embodiments, the wedge-shaped adjusting plate 122 is slidably disposed on the base plate 6 away from the bottom of the fixed plate 120. The first linear drive structure includes a printing roller lifting motor 128 and a printing roller lifting screw 131 connected by transmission. A connecting seat 132 is matched and connected to the printing roller lifting screw 131. The connecting seat 132 is connected to the wedge-shaped adjusting plate 122.

[0034] Optionally, a bottom linear guide rail 123 can be provided at the bottom of the wedge-shaped adjusting plate 122, and a slider can be provided on the base plate 6. The bottom linear guide rail 123 is slidably connected to the slider, thereby achieving a movable connection. The movable connection structure of the wedge-shaped adjusting plate 122 can also be other, such as using a matching grooved guide rail structure to achieve a movable connection. There is no specific limitation, as long as the purpose is to achieve linear movement.

[0035] In some embodiments, the flexible electronic gravure printing roller adjustment mechanism further includes an axial alignment printing adjustment mechanism for multi-layer printing. This axial alignment printing adjustment mechanism includes a roller mounting plate 114 and a second linear drive structure disposed between the roller mounting base 108 and the fixed plate 120. A pressure sensor 110 is disposed between the roller mounting base 108 and the roller mounting plate 114. An alignment linear guide 124 is provided on the fixed plate 120 along the axial direction of the roller. The roller mounting plate 114 is slidably connected to the alignment linear guide 124. The second linear drive structure drives the roller mounting plate 114 and the roller to move along the alignment linear guide 124 to achieve axial alignment adjustment of the roller during multi-layer printing. The alignment adjustment mechanism is used to adjust the left and right offset of the printing roller during registration to achieve better printing. During printing, alignment adjustment can be performed first, followed by pressure adjustment.

[0036] In some embodiments, multiple alignment linear guide rails 124 are arranged parallel to each other on the fixing plate 120, and the printing roller mounting plate 114 is slidably connected to the multiple alignment linear guide rails 124 respectively; a slider can be connected to the bottom of the printing roller mounting plate 114 to achieve sliding connection along the alignment linear guide rails 124. Optionally, the multiple alignment linear guide rails 124 can be symmetrically arranged about the printing roller mounting plate 114 to better achieve the supporting function and improve stability.

[0037] The second linear drive structure includes an alignment motor 115 and an alignment lead screw 119 connected by a transmission. The nut seat on the alignment lead screw 119 is connected to the printing roller mounting plate 114. The alignment motor 115 can be mounted on the fixed plate 120, and the nut seat can be connected to the printing roller mounting plate 114 or a slider. The specific connection is not limited, as long as it can drive the printing roller mounting seat 108 to move.

[0038] The printing roller is connected to a drive motor, which is mounted on the printing roller mounting plate 114 via a motor mounting base 113 so that it can move together with the printing roller during alignment and adjustment.

[0039] In some embodiments, a flexible electronic gravure printing plate roller adjustment method is also provided, based on the flexible electronic gravure printing plate roller adjustment mechanism described in any one of the preceding embodiments, the method comprising: The pressure sensor 110 is used to monitor the pressure of the printing roller in real time. When there is a deviation between the real-time pressure obtained by the pressure sensor 110 and the preset pressure, the first linear drive structure is used to drive the wedge adjustment plate 122 to move to adjust the height of the printing roller and realize the adjustment of the printing roller pressure until the real-time pressure is consistent with the preset pressure.

[0040] Furthermore, a wedge-shaped adjusting plate 122, a wedge-shaped fixing block 127, and a first linear drive structure are respectively provided below the fixing plate 120 and corresponding to both ends of the printing roller; when pressure sensors 110 are respectively provided between the printing roller mounting base 108 at both ends of the printing roller and the fixing plate 120, the method further includes: using the pressure sensors 110 at both ends of the printing roller to monitor the pressure at both ends of the printing roller in real time; when there is a deviation between the real-time pressure obtained at either end and the preset pressure, the first linear drive structure corresponding to either end is used to drive the corresponding wedge-shaped adjusting plate 122 to move to adjust the height of either end of the printing roller to achieve pressure adjustment at either end of the printing roller until the real-time pressure is consistent with the preset pressure.

[0041] Furthermore, when the adjustment mechanism also includes an axial alignment printing adjustment mechanism for the printing roller used in multi-layer printing, the method further includes: using the printing roller mounting plate 114 between the printing roller mounting base 108 and the fixing plate 120 and the second linear drive structure, as well as the alignment linear guide rail 124 along the printing roller axis on the fixing plate 120 to achieve precise control of the left and right positions of the printing roller along the axial direction, so as to realize the alignment adjustment function of the printing roller axis during multi-layer printing.

[0042] In some embodiments, a flexible electronic gravure printing machine is also provided. The flexible electronic gravure printing machine includes the flexible electronic gravure printing plate roller adjustment mechanism described in any of the above embodiments, and further includes a traction roller 103, a front upright plate 5, and a rear upright plate 7. The front upright plate 5 and the rear upright plate 7 are disposed at both ends of the plate roller. The plate roller mounting seat 108 is located between the front upright plate 5 and the rear upright plate 7. The traction roller 103 is in contact with the plate roller and is rotatably mounted at one end on the front upright plate 5 and at the other end on the rear upright plate 7. The printing substrate is used to pass through the traction roller 103 and the plate roller for printing.

[0043] In some embodiments, the printing roller, traction roller, pressure adjustment mechanism, and alignment adjustment mechanism together form the printing roller assembly 1. For example... Figure 2The printing roller assembly 1 includes: a front mounting base 101, a bearing housing 102, a traction roller 103, a coupling 104, a rear mounting base 105, a reducer 106, a drive motor 107, a printing roller mounting base 108, a bearing housing 109, a pressure sensor 110, a bearing housing 111, a coupling 112, a motor mounting base 113, a printing roller mounting plate 114, an alignment motor 115, a reducer 116, a motor mounting plate 117, a coupling 118, an alignment screw 119, a fixing plate 120, a wedge-shaped linear guide rail 121, a wedge-shaped adjusting plate 122, a bottom linear guide rail 123, an alignment linear guide rail 124, a vertical linear guide rail 125, a vertical fixing block 126, a wedge-shaped fixing block 127, a printing roller lifting motor 128, a reducer 129, a coupling 130, a printing roller lifting screw 131, and a connecting base 132.

[0044] refer to Figure 2 The specific installation method is as follows: the front mounting seat 101 is fixed on the front upright plate 5, the rear mounting seat 105 is fixed on the rear upright plate 7, the traction roller 103 is mounted with bearing seats 102 at both ends and is erected between the front mounting seat 101 and the rear mounting seat 105, the drive motor 107 is connected to the reducer 106 and is fixedly connected to the rear mounting seat 105, and the inner side of the traction roller 103 is axially connected to the reducer 106 through the coupling 104; A bearing seat 109 is axially mounted on the outer side of the printing roller, and a bearing seat 111 is axially mounted on the inner side of the printing roller. The bearing seats 109 and 111 are respectively fitted and fixed in the printing roller mounting base 108. The drive motor 107 is connected to the reducer 106 and fixed on the side of the motor mounting base 113. The inner side of the printing roller is axially connected to the reducer 106 through a coupling 112. The printing roller mounting base 108 is fixed above the pressure sensor 110, and pressure sensors 110 are fixed on the upper surfaces of both ends of the printing roller mounting plate 114. Four alignment linear guides 124 are provided parallel below the printing roller mounting plate 114. The four alignment linear guides 124 are fixed parallel to the upper surface of the fixing plate 120. The alignment motor 115 and the reducer 116 are connected and fixed to the side of the motor mounting plate 117. The bottom surface of the motor mounting plate 117 is fixed to the upper surface of the fixing plate 120. One end of the alignment screw 119 is rotatably fixed below the printing roller mounting plate 114, and the other end is fixed above the fixing plate 120. It is axially connected to the reducer 116 through the coupling 118. Four vertical linear guide rails 125 are fixed on one side by vertical fixing blocks 126 around the upper surface of the fixing plate 120, two of which are fixed on the other side of the front upright plate 5, and the other two are fixed on the other side of the rear upright plate 7. The upper surfaces of the four wedge-shaped linear guides 121 are fixed in parallel to the lower surface of the fixing plate 120 by wedge-shaped fixing blocks 127. The lower surfaces of the two outer wedge-shaped linear guides 121 are fixed in parallel to the upper surface of the outer wedge-shaped adjusting plate 122, and the lower surfaces of the two inner wedge-shaped linear guides 121 are fixed in parallel to the upper surface of the inner wedge-shaped adjusting plate 122. The lower surfaces of the inner and outer wedge-shaped adjusting plates 122 are respectively fixed to the bottom linear guides 123. The two bottom linear guides 123 are slidably arranged in parallel on the upper surface of the base plate 6. The printing roller lifting motor 128 and the reducer 129 are connected and fixed on the side of the motor mounting base. The bottom surface of the motor mounting base is fixed on the upper surface of the base plate 6. One end of the printing roller lifting screw 131 is rotatably fixed to the connecting seat 132. The other end of the printing roller lifting screw 131 is axially connected to the reducer 129 through the coupling 130. The connecting seat 132 is fixed on the side of the wedge-shaped adjusting plate 122. When it is necessary to increase the pressure of the printing roller, the two printing roller lifting motors 128 rotate simultaneously, driving the printing roller lifting screw 131 to rotate, which in turn pushes the wedge adjusting plate 122 to move forward, thereby causing the printing roller to move upward and increasing the pressure between the printing roller and the traction roller 103; when it is necessary to decrease the pressure of the printing roller, the two printing roller lifting motors 128 rotate simultaneously, driving the printing roller lifting screw 131 to rotate, which in turn pushes the wedge adjusting plate 122 to move backward, thereby causing the printing roller to move downward and decreasing the pressure between the printing roller and the traction roller 103. When it is necessary to increase the pressure at the left end of the printing roller, the left printing roller lifting motor 128 rotates, driving the left printing roller lifting screw 131 to rotate, which in turn pushes the left wedge adjusting plate 122 to move forward, thereby causing the left side of the printing roller to move upward and increasing the pressure between the left side of the printing roller and the traction roller 103. When it is necessary to decrease the pressure at the left end of the printing roller, the left printing roller lifting motor 128 rotates, driving the left printing roller lifting screw 131 to rotate, which in turn pushes the left wedge adjusting plate 122 to move backward, thereby causing the left side of the printing roller to move downward and decreasing the pressure between the left side of the printing roller and the traction roller 103. The pressure adjustment method for the right side of the printing roller is the same as that for the left side.

[0045] The flexographic gravure printing press also includes a doctor blade assembly 2, an adjusting roller assembly 3, and an ink supply assembly 4; the doctor blade assembly 2 is correspondingly arranged with the printing plate and is used to perform the ink scraping operation; the adjusting roller assembly 3 includes a plurality of rollers 311 rotatably disposed between the front upright plate and the rear upright plate and whose axial direction is parallel to the axial direction of the printing plate, for bypassing the printing substrate to adjust the wrap angle of the printing substrate passing through the traction roller 103; the ink supply assembly 4 is installed on the front upright plate 5 and / or the rear upright plate 7 and is used to supply printing ink.

[0046] like Figure 3 The substrate passes between the printing roller and the traction roller 103, and simultaneously passes through the adjusting roller assembly. The roller 311 can adjust the wrap angle of the substrate as it passes through the traction roller 103.

[0047] like Figure 4 The equipment control hardware block diagram shows that the main controller is Beckhoff CX2020, the motor is a servo drive with EtherCat bus, the main control screen is used for setting equipment process parameters and overall control operations, the pressure detection module performs pressure detection tasks when the printing roller and traction roller are in contact, the traction roller module, printing roller module and printing roller lifting module are as execution units, and after receiving the corresponding instructions issued by the main controller according to the set process parameters, they execute their respective actions.

[0048] like Figure 5 The equipment control flowchart shows that after the printing roller is installed, the relevant parameters are set according to the process requirements. The printing roller pressure is set first, and after the printing roller rises to the position, the doctor blade parameters and ink supply parameters are set in sequence. After all parameters are set, the equipment is started. The printing roller motor, traction roller motor, doctor blade motor and ink supply motor start to rotate, and the corresponding modules start to work at the same time.

[0049] like Figure 6 The diagram illustrates the principle of printing roller pressure control and compensation. After the printing roller is installed and the pressure parameters are set, the printing roller lifting motor starts to rotate, pushing the printing roller upward. At the same time, the pressure detection module starts to work. When the detected printing roller pressure is less than the set pressure, the printing roller continues to rise. When the detected printing roller pressure is equal to the set pressure, the printing roller stops rising. When the detected printing roller pressure is greater than the set pressure, the printing roller lifting motor starts to rotate in the opposite direction, pushing the printing roller downward, until the detected printing roller pressure is equal to the set pressure, at which point the printing roller lifting stops.

[0050] The printing roller structure provided in this embodiment facilitates the acquisition of printing roller pressure and automatic compensation and adjustment of printing roller pressure, thereby improving the pressure stability of the printing roller during operation and thus improving the uniformity of the sensitive layer of printed flexible electronic devices such as flexible sensors.

[0051] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A flexible electronic gravure printing plate roller adjustment mechanism, characterized in that, The device includes a printing roller and a pressure regulating mechanism. The pressure regulating mechanism includes a fixed plate, a wedge-shaped adjusting plate, a wedge-shaped fixing block, and a first linear drive structure. The two ends of the printing roller are rotatably mounted on a printing roller mounting base. The printing roller mounting base is supported on the fixed plate, and a pressure sensor is provided between the printing roller mounting base and the fixed plate. The wedge-shaped adjusting plate is movably disposed below the fixed plate. A wedge-shaped linear guide rail is provided on the top of the wedge-shaped adjusting plate near the fixed plate. The fixed plate is slidably connected to the wedge-shaped linear guide rail through the wedge-shaped fixing block, so that the fixed plate is in a horizontal state. The first linear drive structure is connected to the wedge-shaped adjusting plate and is used to drive the wedge-shaped adjusting plate to move, thereby realizing the up and down movement of the fixed plate and the printing roller, and then cooperating with the pressure sensor to realize the control of the printing roller pressure.

2. The flexible electronic gravure printing plate roller adjustment mechanism as described in claim 1, characterized in that, The wedge-shaped adjusting plate, the wedge-shaped fixing block, and the first linear drive structure are respectively provided below the fixing plate and at the corresponding positions at both ends of the printing roller; the pressure sensors are respectively provided between the printing roller mounting base at both ends of the printing roller and the fixing plate, for real-time detection of the printing pressure at both ends of the printing roller; The pressure sensors installed at the printing roller mounting seats at both ends of the printing roller, and the printing pressure adjustment mechanism based on the wedge-shaped adjustment plate installed below the fixed plate corresponding to both ends of the printing roller, are used to realize independent and precise control of the printing pressure at both ends of the printing roller during the printing process, so as to ensure the consistency of printing pressure along the entire axial direction of the printing roller.

3. The flexible electronic gravure printing plate roller adjustment mechanism as described in claim 1, characterized in that, The top of the wedge-shaped adjusting plate is provided with two parallel wedge-shaped linear guide rails of the same height. The fixing plate is slidably connected to the two wedge-shaped linear guide rails through two wedge-shaped fixing blocks.

4. The flexible electronic gravure printing plate roller adjustment mechanism as described in claim 1, characterized in that, The pressure regulating mechanism further includes a vertical fixing block and a vertical linear guide rail; the vertical fixing block is connected to the fixing plate, and the vertical fixing block is slidably connected to the vertical linear guide rail fixed on the equipment foundation, the vertical linear guide rail being arranged in the up-down direction.

5. The flexible electronic gravure printing plate roller adjustment mechanism as described in claim 1, characterized in that, The wedge-shaped adjusting plate is slidably mounted on the base plate away from the bottom of the fixed plate. The first linear drive structure includes a printing roller lifting motor and a printing roller lifting screw connected by transmission. A connecting seat is matched and connected to the printing roller lifting screw, and the connecting seat is connected to the wedge-shaped adjusting plate.

6. The flexible electronic gravure printing plate roller adjustment mechanism as described in claim 1, characterized in that, It also includes a printing roller axial alignment adjustment mechanism for use in multi-layer printing. The printing roller axial alignment adjustment mechanism includes a printing roller mounting plate and a second linear drive structure disposed between the printing roller mounting base and the fixed plate. The pressure sensor is disposed between the printing roller mounting base and the printing roller mounting plate. An alignment linear guide rail is provided on the fixed plate along the axial direction of the printing roller. The printing roller mounting plate is slidably connected to the alignment linear guide rail. The second linear drive structure is used to drive the printing roller mounting plate and the printing roller to move along the alignment linear guide rail to achieve axial alignment adjustment of the printing roller during multi-layer printing.

7. The flexible electronic gravure printing plate roller adjustment mechanism as described in claim 6, characterized in that, Multiple alignment linear guides are arranged parallel to each other on the fixed plate, and the printing roller mounting plate is slidably connected to the multiple alignment linear guides respectively. The second linear drive structure includes an alignment motor and an alignment lead screw connected by a transmission, wherein the nut seat on the alignment lead screw is connected to the printing roller mounting plate; The printing roller is connected to a drive motor, which is mounted on the printing roller mounting plate via a motor mounting bracket.

8. A method for adjusting a flexible electronic gravure printing roller, characterized in that, Based on the flexible electronic gravure printing roller adjustment mechanism according to any one of claims 1-7, the method includes: The pressure of the printing roller is monitored in real time using a pressure sensor. When there is a deviation between the real-time pressure obtained by the pressure sensor and the preset pressure, the first linear drive structure drives the wedge adjustment plate to move to adjust the height of the printing roller and thus adjust the pressure of the printing roller until the real-time pressure is consistent with the preset pressure.

9. A flexible electronic gravure printing machine, characterized in that, The flexible electronic gravure printing plate roller adjustment mechanism according to any one of claims 1-7 further includes a traction roller, a front upright plate, and a rear upright plate. The front upright plate and the rear upright plate are disposed at both ends of the plate roller. The plate roller mounting seat is located between the front upright plate and the rear upright plate. The traction roller is in contact with the plate roller and is rotatably mounted on the front upright plate at one end and on the rear upright plate at the other end. The printing substrate is used to pass through the traction roller and the plate roller for printing.

10. The flexible electronic gravure printing machine as described in claim 9, characterized in that, It also includes a doctor blade assembly, an adjusting roller assembly, and an ink supply assembly; the doctor blade assembly is correspondingly arranged with the printing plate and is used to perform the ink scraping operation; the adjusting roller assembly includes a plurality of rollers rotatably disposed between the front upright plate and the rear upright plate and whose axial direction is parallel to the axial direction of the printing plate, for bypassing the printing substrate to adjust the wrap angle of the printing substrate passing through the traction roller; the ink supply assembly is installed on the front upright plate and / or the rear upright plate and is used to supply printing ink.

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