A preparation device for inkjet printing flexible electromagnetic metamaterial and its operation method

Abstract

This invention belongs to the field of printing electromagnetic materials technology, specifically a fabrication apparatus for inkjet printing flexible electromagnetic metamaterials. The apparatus includes: a frame, with a support platform fixedly connected inside the frame, and a support frame fixedly connected to the upper surface of the support platform; a raw material roll, with an unwinding mechanism between the raw material roll and the support platform for fixing the raw material roll; an inkjet printer body, with an adjustment mechanism between the inkjet printer body and the support platform for fixing the inkjet printer body; a reduction soaking tank, fixedly connected to the upper surface of the support platform; a conveyor frame, with multiple first drive rollers rotatably connected to the conveyor frame; and a take-up roll, with a take-up mechanism between the take-up roll and the support platform for fixing the take-up roll. This invention also provides an operation method for inkjet printing flexible electromagnetic metamaterials. This invention features a roll-to-roll fabrication process that significantly shortens the production cycle, improves production efficiency, and meets the needs of large-scale industrial production.

Description

Technical Field

[0001] This invention belongs to the field of printing electromagnetic materials technology, specifically a device for preparing flexible electromagnetic metamaterials by inkjet printing and its operation method. Background Technology

[0002] With the rapid development of modern electronic technology, the demand for materials with special electromagnetic properties is increasing. Flexible electromagnetic metamaterials have attracted widespread attention due to their potential applications in wearable electronics, flexible displays, electromagnetic shielding, and electromagnetic compatibility. Because of their unique electromagnetic properties and adjustability, flexible electromagnetic metamaterials have broad application prospects in electronics, communications, medicine, and military fields.

[0003] However, traditional methods for fabricating flexible electromagnetic metamaterials have some limitations. Traditional fabrication processes often involve batch production, with PI film raw materials being fed into the fabrication device in the form of individual sheets. The PI film raw materials are then coated with silver ink and subjected to a reduction reaction before being collected. Current fabrication methods cannot achieve continuous production, requiring the continuous feeding of individual PI film raw materials into the fabrication device, resulting in low production efficiency. Summary of the Invention

[0004] To address the problems mentioned above, this invention provides an apparatus and method for preparing inkjet-printed flexible electromagnetic metamaterials. In the process of preparing the flexible electromagnetic metamaterials, a roll-to-roll method is adopted, where the raw material roll is fed and the reel is rolled up sequentially. The PI film can continuously pass through the inkjet printer body, the reduction soaking tank, and the conveyor frame to complete the preparation of the flexible electromagnetic metamaterials, greatly improving the preparation speed. Compared with the traditional batch processing method for single PI films, the roll-to-roll preparation process significantly shortens the production cycle, improves production efficiency, and meets the needs of large-scale industrial production.

[0005] This invention provides an apparatus for fabricating flexible electromagnetic metamaterials by inkjet printing, comprising:

[0006] The frame has a support platform fixedly connected inside it, and a support frame is fixedly connected to the upper surface of the support platform.

[0007] The raw material roll is provided with an unwinding mechanism between the raw material roll and the support platform for fixing the raw material roll;

[0008] The inkjet printer body has an adjustment mechanism between it and the support platform for fixing the inkjet printer body.

[0009] The restoration soaking tank is fixedly connected to the upper surface of the support platform;

[0010] The conveyor frame is fixedly connected to the upper surface of the support platform, and multiple first drive rollers are rotatably connected to the conveyor frame.

[0011] A take-up coil is provided, and a take-up mechanism is provided between the take-up coil and the support platform to fix the take-up coil.

[0012] Furthermore, a drying rack is fixedly connected to the conveyor frame and placed below the first drive roller, and an upward-blowing fan is fixedly connected inside the drying rack.

[0013] Furthermore, the top of the conveyor frame is provided with a fixing groove, and a flexible scraper that abuts against the upper surface of the flexible electromagnetic metamaterial is inserted into the fixing groove.

[0014] Furthermore, a first support rod, a second support rod, and a third support rod are sequentially connected to the top of the support frame along the conveying direction of the flexible electromagnetic metamaterial. The first support rod is connected to a first camera positioned above the inkjet printer body's output port, the second support rod is connected to a second camera positioned above the conveyor frame's input port, and the third support rod is connected to a third camera positioned above the conveyor frame's output port. The first, second, and third cameras are electrically connected to a display terminal.

[0015] Furthermore, a color mark sensor is fixedly connected to the bottom inner wall of the immersion tank, and the color mark sensor is electrically connected to the display terminal. A flexible support plate is fixedly connected to the upper surface of the conveyor rack, and a temperature sensor placed above the drying rack is fixedly connected to the flexible support plate. The temperature sensor is electrically connected to the display terminal.

[0016] Furthermore, the unwinding mechanism includes a crossbeam slidably connected to a support frame. A pair of vertical sidewalls of the support frame are respectively fixedly connected to a first rack. A dual-axis motor is fixedly connected to the sidewall of the crossbeam. The output shafts of the dual-axis motors are respectively fixedly connected to rotating rods rotatably connected to the crossbeam. The ends of the rotating rods are fixedly connected to a first gear meshing with the first rack. A pair of sliding seats are slidably connected to the side of the crossbeam away from the dual-axis motor. A second rack is fixedly connected to the side of the crossbeam near the sliding seats. A first motor is fixedly connected to the sliding seats. The output shaft of the first motor is fixedly connected to a second gear meshing with the second rack. A vertical beam is connected to the side of the sliding seats near the raw material roll. The vertical beam is slidably connected to the sliding seats. A third rack is fixedly connected to the sidewall of the vertical beam. A second motor is fixedly connected to the sliding seats. The output shaft of the second motor is fixedly connected to a third gear meshing with the third rack. A connecting assembly for fixing the end of the raw material roll is connected to the vertical beam.

[0017] Furthermore, the connecting assembly includes a connecting seat that is bolted to the side wall of the vertical beam. A flexible gripper is fixedly connected to the side of the connecting seat away from the vertical beam. The end of the raw material roll is inserted into the flexible gripper, and the end of the raw material roll is fixedly connected to the flexible gripper by bolts.

[0018] Furthermore, the adjustment mechanism includes a first support base fixedly connected to the upper surface of the support platform, a third motor fixedly connected to the first support base, a first lead screw fixedly connected to the output shaft of the third motor, a first connecting block threadedly connected to the first lead screw and slidably connected to the first support base, a second support base fixedly connected to the upper surface of the first connecting block, a fourth motor fixedly connected to the second support base, a second lead screw fixedly connected to the output shaft of the fourth motor, a second connecting block threadedly connected to the second lead screw and slidably connected to the second support base, and the upper surface of the second connecting block fixedly connected to the inkjet printer body.

[0019] Furthermore, the unwinding mechanism includes a first fixed seat and a second fixed seat fixedly connected to the upper surface of the support platform. The second fixed seat is rotatably connected to a rotating block, and the rotating block is provided with a rotating groove for the end of the take-up roll to be inserted. A sixth motor is fixedly connected to the side wall of the first fixed seat. A pair of clamping blocks are provided between the output shaft of the sixth motor and the end of the take-up roll, and the pair of clamping blocks are fixed by bolts.

[0020] This invention also provides a method for inkjet printing flexible electromagnetic metamaterials, comprising:

[0021] S1. Install the raw material roll: Connect and fix the end of the raw material roll to the flexible clamp with bolts, and then connect and fix the connecting seat to the vertical beam with bolts. Adjust the position of the raw material roll in the length direction, width direction and height direction of the support frame by using the dual-axis motor, the first motor and the second motor respectively.

[0022] S2. Install the take-up roll: Insert one end of the take-up roll into the rotating groove, and connect and fix the other end of the take-up roll to the output shaft of the sixth motor through the clamping block. Clamp and fix the clamping block with bolts so that the PI film on the raw material roll passes through the inkjet printer body, the reduction soaking tank and the conveyor frame in sequence and then is wound onto the take-up roll.

[0023] S3. Adjust the position of the inkjet printer body: Adjust the position of the inkjet printer body on the support frame in the length and width directions using the third and fourth motors;

[0024] S4. Inkjet printing: The inkjet printer body sprays ink onto the PI film inside the inkjet printer body.

[0025] S5. Reduction Immersion: The PI film that has left the inkjet printer body enters the reduction immersion bath for immersion and reaction.

[0026] S6. Drying and conveying: The flexible electromagnetic metamaterial leaving the reduction soaking tank is conveyed to the conveyor frame, the blower blows air upwards, and the drying frame dries the flexible electromagnetic metamaterial above.

[0027] S7. Process monitoring: The first camera, the second camera and the third camera transmit images to the display terminal respectively, the color mark sensor transmits color density values ​​to the display terminal, and the temperature sensor transmits temperature values ​​to the display terminal.

[0028] S8. Take-up roll take-up: The sixth motor drives the take-up roll to rotate. The rotating take-up roll takes up the processed flexible electromagnetic metamaterial, completing the preparation of inkjet printed flexible electromagnetic metamaterial.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] (1) In the process of preparing flexible electromagnetic metamaterials by inkjet printing, the raw material roll feeding and the take-up roll take-up roll are rolled together. The PI film can continuously pass through the inkjet printer body, the reduction soaking tank and the conveyor to complete the preparation of flexible electromagnetic metamaterials, which greatly improves the preparation speed of flexible electromagnetic metamaterials. Compared with the traditional batch processing method of single PI film, the roll-to-roll preparation process significantly shortens the production cycle, improves production efficiency and meets the needs of large-scale industrial production.

[0031] (2) A pair of fixed grooves are provided on the upper surface of the conveyor frame. A flexible scraper is inserted into the fixed groove. The flexible scraper abuts against the upper surface of the flexible electromagnetic metamaterial. The flexible scraper is used to scrape off small particles of the circuit on the surface of the flexible electromagnetic metamaterial without damaging the surface of the flexible electromagnetic metamaterial.

[0032] (3) The first camera captures the surface condition of the inkjet-printed flexible electromagnetic metamaterial and transmits the image to the display terminal. The staff can observe the surface condition of the inkjet-printed flexible electromagnetic metamaterial through the display terminal. The second camera is placed on the feeding side of the conveyor frame. The second camera captures the surface condition of the flexible electromagnetic metamaterial after the reduction reaction and transmits the image to the display terminal. The staff can observe the surface condition of the flexible electromagnetic metamaterial after the reduction reaction through the display terminal. The third camera is placed on the discharging side of the conveyor frame. The third camera captures the surface condition of the flexible electromagnetic metamaterial after the drying process and transmits the image to the display terminal. The staff can observe the surface condition of the flexible electromagnetic metamaterial after the drying process through the display terminal. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1This is a schematic diagram of the structure of an embodiment of this application;

[0035] Figure 2 This is a schematic diagram illustrating the inkjet printer body in this embodiment;

[0036] Figure 3 This is a schematic diagram illustrating the flexible scraper in this embodiment;

[0037] Figure 4 This is a schematic diagram illustrating the first camera in this embodiment;

[0038] Figure 5 This is a schematic diagram illustrating the second camera in this embodiment;

[0039] Figure 6 This is a schematic diagram illustrating the third camera in this embodiment;

[0040] Figure 7 This is a schematic diagram illustrating the color mark sensor in this embodiment;

[0041] Figure 8 This is a schematic diagram illustrating the crossbeam in this embodiment;

[0042] Figure 9 This is a schematic diagram illustrating the first gear in this embodiment;

[0043] Figure 10 This is a schematic diagram illustrating the second gear in this embodiment;

[0044] Figure 11 This is a schematic diagram illustrating the third gear in this embodiment;

[0045] Figure 12 This is a schematic diagram illustrating the flexible gripper in this embodiment;

[0046] Figure 13 This is a schematic diagram illustrating the first lead screw in this embodiment;

[0047] Figure 14 This is a schematic diagram illustrating the clamping block in this embodiment.

[0048] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Support platform; 21. Support frame; 211. First support rod; 2111. Roller; 2112. Second slide rail; 2113. Slider; 2114. First receiving rod; 2115. First camera; 212. Second support rod; 2121. Second receiving rod; 2122. Second camera; 213. Third support rod; 2131. Third receiving rod; 2132. Third camera; 214. First slide rail; 22. Original 23. Inkjet printer body; 24. Adjustment mechanism; 241. First support base; 242. Third motor; 243. First lead screw; 244. First connecting block; 245. Second support base; 246. Fourth motor; 247. Second lead screw; 248. Second connecting block; 25. Reduction soaking tank; 251. Color mark sensor; 252. Second drive roller; 26. Conveyor frame; 261. First drive roller; 262. Drive assembly; 2621. Fifth motor Machine; 2622, Fourth gear; 2623, Transmission gear; 2624, Connecting rod; 263, Drying rack; 2631, Fan; 264, Fixing groove; 265, Flexible scraper; 27, Take-up roll; 28, Flexible receiving plate; 281, Temperature sensor; 3, Unwinding mechanism; 31, Crossbeam; 311, Traveling wheel; 32, First rack; 33, Dual-axis motor; 34, Rotating rod; 35, First gear; 36, Sliding seat; 361, First guide rail; 362 363. Second rack; 364. First motor; 3631. Second gear; 37. Vertical beam; 371. Second guide rail; 372. Third rack; 38. Second motor; 381. Third gear; 39. Connecting assembly; 391. Connecting seat; 392. Flexible gripper; 4. Winding mechanism; 41. First fixed seat; 42. Second fixed seat; 43. Rotating block; 431. Rotating groove; 44. Sixth motor; 45. Clamping block; 5. First observation window; 6. Second observation window. Detailed Implementation

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0050] The following is in conjunction with the appendix Figure 1 To be continued Figure 14 The invention is described in detail with specific embodiments.

[0051] like Figures 1 to 14As shown, the present invention provides a fabrication apparatus for flexible inkjet printing of flexible electromagnetic metamaterials, comprising a frame 1, a support platform 2 fixedly connected to the inner wall of the frame 1, and a support frame 21 fixedly connected to the upper surface of the support platform 2. A raw material roll 22 is mounted on the support frame 21, and PI film raw material is wound around the raw material roll 22. An unwinding mechanism 3 is provided between the raw material roll 22 and the support frame 21. The unwinding mechanism 3 fixes both ends of the raw material roll 22 and supports both ends of the raw material roll 22. During the unwinding process, the raw material roll 22 rotates relative to its ends around its own axis. The unwinding mechanism 3 can drive the raw material roll 22 to move along the length, width, and height directions of the support frame 21, respectively, thereby adjusting the position of the raw material roll 22.

[0052] The upper surface of the support platform 2 is provided with an inkjet printer body 23. An adjustment mechanism 24 is provided between the inkjet printer body 23 and the support platform 2. The adjustment mechanism 24 supports the inkjet printer body 23 and can drive the inkjet printer to move along the length and width directions of the support frame 21 to adjust the position of the inkjet printer body 23.

[0053] The pre-prepared silver ink is added into the inkjet printer body 23. The PI film material after being unwound from the material roll 22 passes through the inside of the inkjet printer body 23. The inkjet printer body 23 sprays ink onto the upper surface of the PI film material. After the ink is sprayed, the PI film material leaves the inkjet printer body 23.

[0054] A reduction soaking tank 25 is fixedly connected to the upper surface of the support platform 2. The reduction soaking tank 25 is filled with a pre-prepared copper plating solution. The PI film leaving the inkjet printer body 23 enters the reduction soaking tank 25 and reacts. The PI film leaving the reduction soaking tank 25 after passing through the inside of the reduction soaking tank 25 leaves the reduction soaking tank 25.

[0055] A conveyor frame 26 is fixedly connected to the upper surface of the support platform 2. Several first drive rollers 261 are rotatably connected to the conveyor frame 26. A drive assembly 262 for driving the first drive rollers 261 to rotate is connected to the conveyor frame 26. A drying rack 263 is fixedly connected to the conveyor frame 26. The drying rack 263 is placed below the first drive rollers 261. The drying rack 263 uses electric heating to heat and dry the flexible electromagnetic metamaterial above the first drive rollers 261.

[0056] The flexible electromagnetic metamaterial, after leaving the reduction soaking tank 25, is placed on the conveyor frame 26. The first drive roller 261 conveys the flexible electromagnetic metamaterial, and the drying rack 263 heats and dries the flexible electromagnetic metamaterial after soaking and reduction to dry the residual liquid on the surface of the flexible electromagnetic metamaterial.

[0057] A take-up roll 27 is provided above the support platform 2. A take-up mechanism 4 is provided between the take-up roll 27 and the support. The take-up mechanism 4 fixes the end of the take-up roll 27. The take-up mechanism 4 drives the take-up roll 27 and the end of the take-up roll 27 to rotate together. The flexible electromagnetic metamaterial that leaves the conveyor frame 26 is wound on the take-up roll 27. The take-up roll 27 takes up the prepared flexible electromagnetic metamaterial.

[0058] In the process of preparing flexible electromagnetic metamaterials by inkjet printing, the raw material roll 22 is fed out and the take-up roll 27 is taken up and rolled together. The PI film can continuously pass through the inkjet printer body 23, the reduction soaking tank 25 and the conveyor 26 to complete the preparation of flexible electromagnetic metamaterials. This greatly improves the preparation speed of flexible electromagnetic metamaterials. Compared with the traditional batch processing method of single PI film, the roll-to-roll preparation process significantly shortens the production cycle, improves production efficiency and meets the needs of large-scale industrial production.

[0059] The natural continuity of the roll-to-roll process ensures the stability of the flexible electromagnetic metamaterial during transmission. Combined with inkjet printing of the inkjet printing body, this solution can achieve uniform fabrication of large-area flexible electromagnetic metamaterials.

[0060] The upper surface of the conveyor frame 26 is provided with a pair of fixing grooves 264, and a flexible scraper 265 is inserted into the fixing grooves 264. The flexible scraper 265 abuts against the upper surface of the flexible electromagnetic metamaterial. The flexible scraper 265 is used to scrape off small particles of the circuit on the surface of the flexible electromagnetic metamaterial without damaging the surface. The insertion of the flexible scraper 265 into the fixing grooves 264 facilitates the installation of the flexible scraper 265.

[0061] The top of the support frame 21 is connected to a first support rod 211, a second support rod 212, and a third support rod 213, all of which are slidably connected to the support frame 21. A pair of vertical sidewalls of the support frame 21 are fixedly connected to a first slide rail 214. Rollers 2111 are rotatably connected to the sidewalls of the first support rod 211, the second support rod 212, and the third support rod 213, respectively. The rollers 2111 are in rolling contact with the first slide rail 214. The positions of the first support rod 211, the second support rod 212, and the third support rod 213 can be adjusted along the length of the first slide rail 214.

[0062] The vertical sidewalls of the first support rod 211, the second support rod 212, and the third support rod 213 are respectively fixedly connected to the second slide rails 2112. Two sliders 2113 are slidably connected to each second slide rail 2112. The sidewall of the slider 2113 near the first support rod 211 is fixedly connected to the first receiving rod 2114, and the first receiving rod 2114 is fixedly connected to the first camera 2115. The sidewall of the slider 2113 near the second support rod 212 is fixedly connected to the second receiving rod 2121, and the second receiving rod 2121 is fixedly connected to the second camera 2122. The slider 2113 near the third support rod 213 is fixedly connected to the third receiving rod 2131, and the third receiving rod 2131 is fixedly connected to the third camera 2132. The positions of the first camera 2115, the second camera 2122, and the third camera 2132 can be adjusted along the length of the corresponding second slide rail 2112.

[0063] The first camera 2115, the second camera 2122, and the third camera 2132 are each electrically connected to a display terminal, which in this embodiment is a computer or a monitor. The first camera 2115 is positioned above the inkjet printer body 23's discharge port. The first camera 2115 captures the surface condition of the inkjet-printed flexible electromagnetic metamaterial and transmits the image to the display terminal, allowing staff to observe the surface condition of the inkjet-printed flexible electromagnetic metamaterial through the display terminal.

[0064] The second camera 2122 is placed on the feeding side of the conveyor 26. The second camera 2122 captures the surface condition of the flexible electromagnetic metamaterial after the reduction reaction is completed and transmits the image to the display terminal. The staff can observe the surface condition of the flexible electromagnetic metamaterial after the reduction reaction is completed through the display terminal.

[0065] The third camera 2132 is placed on the side of the conveyor 26 where the material is discharged. The third camera 2132 captures the surface condition of the flexible electromagnetic metamaterial after the drying process is completed and transmits the image to the display terminal. The staff can observe the surface condition of the flexible electromagnetic metamaterial after the drying process through the display terminal.

[0066] A color mark sensor 251 is fixedly connected to the inner wall of the bottom of the reduction soaking tank 25. The color mark sensor 251 is electrically connected to the display terminal. Since the copper plating solution is light blue, the color mark sensor 251 detects the color concentration of the copper plating solution. As the reaction in the reduction soaking tank 25 continues, the color of the copper plating solution gradually becomes lighter. The color mark sensor 251 transmits the detected color concentration value to the display terminal. By observing the value, the staff can replenish or replace the copper plating solution in time when the value is lower than the required value.

[0067] A flexible support plate 28 is fixedly connected to the upper surface of the conveyor rack 26. A temperature sensor 281 is fixedly connected to the upper surface of the flexible support plate 28. The temperature sensor 281 is electrically connected to the display terminal. The temperature sensor 281 is placed above the drying rack 263. The temperature sensor 281 detects the temperature above the drying rack 263 and transmits the temperature value to the display terminal. By observing the temperature value, the operator can adjust the heating temperature of the drying rack 263 to reach a suitable drying temperature when the temperature is too high or too low.

[0068] Multiple fans 2631 are fixedly connected to the inner wall of the bottom surface of the drying rack 263. The fans 2631 blow air upwards, and during the air blowing process, the heat of the drying rack 263 is quickly brought into contact with the surface of the flexible electromagnetic metamaterial by the air, thereby improving the drying efficiency.

[0069] The unwinding mechanism 3 includes a crossbeam 31 placed inside a support frame 21. A pair of vertical sidewalls of the support frame 21 are respectively fixedly connected to a first rack 32. A traveling wheel 311 is rotatably connected to the side of the support frame 21 near the first rack 32. The traveling wheel 311 is in rolling connection with the upper surface of the first rack 32.

[0070] A dual-axis motor 33 is fixedly connected to the side of the crossbeam 31 away from the raw material roll 22. The output shafts of the dual-axis motor 33 are respectively fixedly connected to rotating rods 34. The rotating rods 34 are rotatably connected to the crossbeam 31. A first gear 35 is fixedly connected to the end of the rotating rod 34 away from the dual-axis motor 33. The first gear 35 and the first rack 32 are configured to mesh and connect in a one-to-one correspondence.

[0071] A pair of sliding seats 36 are fixedly connected to the side of the crossbeam 31 near the raw material roll 22. A first guide rail 361 is fixedly connected to the side of the crossbeam 31 near the sliding seats 36, and the sliding seats 36 are slidably connected to the first guide rail 361. A second rack 362 is fixedly connected to the side of the crossbeam 31 near the sliding seats 36. A first motor 363 is fixedly connected to the side of each sliding seat 36 away from the crossbeam 31. A second gear 3631 is fixedly connected to the output shaft of the first motor 363, and the second gear 3631 meshes with the second rack 362.

[0072] A vertical beam 37 is connected to the side of the sliding seat 36 near the raw material roll 22. A second guide rail 371 is fixedly connected to the vertical side wall of the vertical beam 37, and the vertical beam 37 is slidably connected to the sliding seat 36 through the second guide rail 371. A third rack 372 is fixedly connected to one vertical side wall of the vertical beam 37, and a second motor 38 is fixedly connected to the side wall of the sliding seat 36. A third gear 381 is fixedly connected to the output shaft of the second motor 38, and the third gear 381 meshes with the third rack 372.

[0073] A connecting component 39 is provided on the side of the vertical beam 37 near the end of the raw material roll 22. The connecting component 39 connects and fixes the end of the raw material roll 22 to the vertical beam 37. When the raw material roll 22 is unloaded, the end of the raw material roll 22 is fixed, and the raw material roll 22 rotates relative to the end of the raw material roll 22.

[0074] The output shaft of the dual-axis motor 33 drives the rotating rod 34 to rotate, which in turn drives the first gear 35 to rotate. This causes the crossbeam 31 to move along the length of the support frame 21, thereby adjusting the distance between the material roll 22 and the inkjet printer body 23. The output shaft of the first motor 363 drives the second gear 3631 to rotate, causing the sliding seat 36 to move along the width of the support frame 21, thereby adjusting the position of the material roll 22 in the width direction of the support frame 21. The output shaft of the third motor 242 drives the third gear 381 to rotate, causing the vertical beam 37 to move vertically, thereby adjusting the position of the material roll 22 in the vertical direction.

[0075] The connecting assembly 39 includes a connecting seat 391 connected to the side wall of the vertical beam 37, and the connecting seat 391 and the vertical beam 37 are fixedly connected by bolts. A flexible gripper 392 is fixedly connected to the side of the connecting seat 391 away from the vertical beam 37, and the end of the raw material roll 22 is inserted into the inner wall of the flexible gripper 392, and the end of the raw material roll 22 and the flexible gripper 392 are fixedly connected by bolts.

[0076] When it is necessary to replace the raw material roll 22, unscrew the bolts on the connecting seat 391, then remove the connecting seat 391 and the raw material roll 22, and then remove the bolts on the flexible gripper 392 to separate the end of the raw material roll 22 from the flexible gripper 392. Replace with a new raw material roll 22, and then connect and fix the end of the raw material roll 22 to the flexible gripper 392 with bolts. Connect and fix the connecting seat 391 to the vertical beam 37 with bolts.

[0077] The adjustment mechanism 24 includes a first support base 241 fixedly connected to the upper surface of the support platform 2, a third motor 242 fixedly connected to the first support base 241, a first lead screw 243 fixedly connected to the output shaft of the third motor 242, the first lead screw 243 being rotatably connected to the first support base 241, a first connecting block 244 being threadedly connected to the first lead screw 243, and the first connecting block 244 being slidably connected to the first support base 241.

[0078] A second support base 245 is fixedly connected to the upper surface of the first connecting block 244. A fourth motor 246 is fixedly connected to the second support base 245. A second lead screw 247 is fixedly connected to the output shaft of the fourth motor 246. The second lead screw 247 is rotatably connected to the second support base 245. A second connecting block 248 is threadedly connected to the second lead screw 247. The second connecting block 248 is slidably connected to the second support base 245. The inkjet printer body 23 is fixedly connected to the upper surface of the second connecting block 248.

[0079] The output shaft of the third motor 242 drives the first lead screw 243 to rotate, and the first lead screw 243 drives the first connecting block 244 to move along the length direction of the support frame 21, thereby adjusting the position of the inkjet printer body 23 in the length direction of the support frame 21; the output shaft of the fourth motor 246 drives the second lead screw 247 to rotate, and the second lead screw 247 drives the second connecting block 248 to move along the width direction of the support frame 21, thereby adjusting the position of the inkjet printer body 23 in the width direction of the support frame 21.

[0080] The drive assembly 262 includes a fifth motor 2621 fixedly connected to the side wall of the conveyor frame 26. The output shaft of the fifth motor 2621 is fixedly connected to the end of one of the first drive rollers 261. Each first drive roller is fixedly equipped with a fourth gear 2622. A transmission gear 2623 is provided between two adjacent fourth gears 2622. The transmission gear 2623 meshes with the two adjacent fourth gears 2622. A connecting rod 2624 is rotatably connected to the transmission gear 2623. The connecting rod 2624 is fixedly connected to the inner wall of the conveyor frame 26.

[0081] The output shaft of the fourth motor 246 drives one of the first transmission rollers 261 to rotate. The first transmission roller 261 drives the adjacent first transmission roller 261 to rotate through the fourth gear 2622 and the transmission gear 2623. By setting the transmission gear 2623 between two adjacent fourth gears 2622, the rotation direction of all the first transmission rollers 261 can be kept consistent.

[0082] The reduction immersion tank 25 is rotatably connected to multiple second drive rollers 252. When the flexible electromagnetic metamaterial passes through the reduction immersion tank 25, the second drive rollers 252 support and transport the flexible electromagnetic metamaterial. The driving method for driving the second drive rollers 252 to rotate is the same as the driving method for driving the first drive roller 261 to rotate, and will not be described again here.

[0083] The winding mechanism 4 includes a first fixed seat 41 and a second fixed seat 42 fixedly connected to the upper surface of the support platform 2. The second fixed seat 42 is rotatably connected to a rotating block 43. The rotating block 43 has a rotating groove 431 on the side near the take-up roll 27. One end of the take-up roll 27 is inserted into the rotating groove 431.

[0084] A sixth motor 44 is fixedly connected to the side wall of the first fixed base 41. A pair of clamping blocks 45 are provided between the output shaft of the sixth motor 44 and the end of the take-up roll 27. The output shaft of the sixth motor 44 and the end of the take-up roll 27 are respectively placed between the two clamping blocks 45, which are fixedly connected by bolts. Tightening the bolts connects and fixes the end of the take-up roll 27 to the output shaft of the sixth motor 44. When the output shaft of the sixth motor 44 rotates, it drives the take-up roll 27 to rotate through the clamping blocks 45 to take up the material.

[0085] When it is necessary to replace the take-up roll 27, unscrew the bolts connected to the clamping block 45, separate the clamping block 45 from the end of the take-up roll 27, move the take-up roll 27 to separate the end of the take-up roll 27 from the rotating groove 431, then replace with a new take-up roll 27, and insert the end of the take-up roll 27 into the rotating groove 431 again, and connect and fix the end of the take-up roll 27 to the output shaft of the sixth motor 44 through the clamping block 45.

[0086] A first observation window 5 is fixedly connected to the frame 1, and a second observation window 6 is also slidably connected to the frame 1. The second observation windows 6 are set in two pairs, with the two second observation windows 6 in each pair placed on both sides of the frame 1.

[0087] The first observation window 5 and the second observation window 6 facilitate the observation of the working conditions inside the frame 1 by the staff. When it is necessary to replace the raw material roll 22, the staff can move the second observation window 6 near the raw material roll 22 to open the second observation window 6, which is convenient for the staff to replace the raw material roll 22. When it is necessary to replace the take-up roll 27, the staff can move the second observation window 6 near the take-up roll 27 to open the second observation window 6, which is convenient for the staff to replace the take-up roll 27.

[0088] This invention also provides a method for preparing flexible inkjet-printed electromagnetic metamaterials, comprising the following steps:

[0089] S1. Install raw material roll 22: Connect and fix the end of raw material roll 22 to flexible clamp 392 with bolts, and then connect and fix connecting seat 391 to vertical beam 37 with bolts. Adjust the position of raw material roll 22 in length direction, width direction and height direction of support frame 21 by dual-axis motor 33, first motor 363 and second motor 38 respectively.

[0090] S2. Install take-up roll 27: Insert one end of take-up roll 27 into rotating groove 431, and connect and fix the other end of take-up roll 27 to the output shaft of sixth motor 44 through clamping block 45. Clamp and fix clamping block 45 with bolts so that the PI film on raw material roll 22 passes through inkjet printer body 23, reduction soaking tank 25 and conveyor frame 26 in sequence and then is wound onto take-up roll 27.

[0091] S3. Adjust the position of the inkjet printer body 23: Adjust the position of the inkjet printer body 23 on the support frame 21 in the length and width directions by using the third motor 242 and the fourth motor 246.

[0092] S4, Inkjet printing: The inkjet printer body 23 sprays ink onto the PI film that has passed through the inside of the inkjet printer body 23.

[0093] S5, Reduction Immersion: The PI film that has left the inkjet printer body 23 enters the reduction immersion tank 25 for immersion and reaction.

[0094] S6. Drying and conveying: The flexible electromagnetic metamaterial leaving the reduction soaking tank 25 is conveyed to the conveyor frame 26. The blower blows air upwards, and the drying frame 263 dries the flexible electromagnetic metamaterial above.

[0095] S7. Process monitoring: The first camera 2115, the second camera 2122 and the third camera 2132 transmit the images to the display terminal respectively, the color mark sensor 251 transmits the color density value to the display terminal, and the temperature sensor 281 transmits the temperature value to the display terminal.

[0096] S8, Take-up roll 27 takes up material: The sixth motor 44 drives the take-up roll 27 to rotate. The rotating take-up roll 27 takes up the processed flexible electromagnetic metamaterial, thus completing the preparation of inkjet printed flexible electromagnetic metamaterial.

[0097] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the nature and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention.

Claims

1. A method for printing flexible electromagnetic metamaterials using inkjet printing, applied to an apparatus for preparing flexible electromagnetic metamaterials using inkjet printing, characterized in that... include: S1. Install the raw material roll (22): Connect and fix the end of the raw material roll (22) to the flexible clamp (392) with bolts, and then connect and fix the connecting seat (391) to the vertical beam (37) with bolts. Adjust the position of the raw material roll (22) in the length direction, width direction and height direction of the support frame (21) by the dual-axis motor (33), the first motor (363) and the second motor (38) respectively. S2. Install the take-up roll (27): Insert one end of the take-up roll (27) into the rotating groove (431), and connect the other end of the take-up roll (27) to the output shaft of the sixth motor (44) through the clamping block (45). Clamp the clamping block (45) with bolts so that the PI film on the raw material roll (22) passes through the inkjet printer body (23), the reduction soaking tank (25), and the conveyor frame (26) in sequence and then winds onto the take-up roll (27). S3. Adjust the position of the inkjet printer body (23): Adjust the position of the inkjet printer body (23) on the support frame (21) in the length and width directions by using the third motor (242) and the fourth motor (246); S4, Inkjet printing: The inkjet printer body (23) sprays ink onto the PI film inside the inkjet printer body (23); S5, Reduction Immersion: The PI film leaving the inkjet printer body (23) enters the reduction immersion tank (25) for immersion and reaction; S6. Drying and conveying: The flexible electromagnetic metamaterial leaving the reduction soaking tank (25) is conveyed to the conveyor rack (26), the blower blows air upwards, and the drying rack (263) dries the flexible electromagnetic metamaterial above. S7. Process monitoring: The first camera (2115), the second camera (2122) and the third camera (2132) transmit the images to the display terminal respectively, the color mark sensor (251) transmits the color density value to the display terminal, and the temperature sensor (281) transmits the temperature value to the display terminal. S8, Take-up roll (27) Take-up: The sixth motor (44) drives the take-up roll (27) to rotate. The rotating take-up roll (27) takes up the processed flexible electromagnetic metamaterial and completes the preparation of inkjet printed flexible electromagnetic metamaterial. The apparatus for fabricating flexible electromagnetic metamaterials by inkjet printing includes: A frame (1) is fixedly connected inside the frame (1), and a support platform (2) is fixedly connected to the upper surface of the support platform (2); Raw material roll (22), and an unwinding mechanism (3) for fixing the raw material roll (22) is provided between the raw material roll (22) and the support platform (2); An inkjet printer body (23) is provided between the inkjet printer body (23) and the support platform (2) for fixing the inkjet printer body (23); A reduction soaking tank (25) is fixedly connected to the upper surface of the support platform (2); A conveyor frame (26) is fixedly connected to the upper surface of the support platform (2), and a plurality of first transmission rollers (261) are rotatably connected to the conveyor frame (26); A take-up roll (27) is provided between the take-up roll (27) and the support platform (2), and a take-up mechanism (4) is provided for fixing the take-up roll (27).

2. The method for printing flexible electromagnetic metamaterials by inkjet printing according to claim 1, characterized in that, The conveyor frame (26) is fixedly connected to a drying rack (263) located below the first transmission roller (261), and an upward-blowing fan (2631) is fixedly connected inside the drying rack (263).

3. The method for printing flexible electromagnetic metamaterials by inkjet printing according to claim 1, characterized in that, The top of the conveyor frame (26) is provided with a fixing groove (264), and a flexible scraper (265) that abuts against the upper surface of the flexible electromagnetic metamaterial is inserted into the fixing groove (264).

4. The method for inkjet printing flexible electromagnetic metamaterials according to claim 1, characterized in that, The top of the support frame (21) is sequentially connected with a first support rod (211), a second support rod (212), and a third support rod (213) along the flexible electromagnetic metamaterial conveying direction. The first support rod (211) is connected to a first camera (2115) placed above the discharge port of the inkjet printer body (23). The second support rod (212) is connected to a second camera (2122) placed above the inlet of the conveyor frame (26). The third support rod (213) is connected to a third camera (2132) placed above the discharge port of the conveyor frame (26). The first camera (2115), the second camera (2122), and the third camera (2132) are electrically connected to a display terminal.

5. The method for printing flexible electromagnetic metamaterials by inkjet printing according to claim 4, characterized in that, A color mark sensor (251) is fixedly connected to the bottom inner wall of the reduction soaking tank (25). The color mark sensor (251) is electrically connected to the display terminal. A flexible support plate (28) is fixedly connected to the upper surface of the conveyor frame (26). A temperature sensor (281) is fixedly connected to the flexible support plate (28) and placed above the drying rack (263). The temperature sensor (281) is electrically connected to the display terminal.

6. A method for printing flexible electromagnetic metamaterials using inkjet printing according to any one of claims 1 to 5, characterized in that, The unwinding mechanism (3) includes a crossbeam (31) slidably connected to a support frame (21). A pair of vertical sidewalls of the support frame (21) are respectively fixedly connected to a first rack (32). A dual-axis motor (33) is fixedly connected to the sidewall of the crossbeam (31). The output shafts of the dual-axis motor (33) are respectively fixedly connected to rotating rods (34) rotatably connected to the crossbeam (31). The ends of the rotating rods (34) are fixedly connected to a first gear (35) meshing with the first rack (32). A pair of sliding seats (36) are slidably connected to the side of the crossbeam (31) away from the dual-axis motor (33). A second rack (362) is fixedly connected to the side of the crossbeam (31) near the sliding seats (36). (36) A first motor (363) is fixedly connected, and the output shaft of the first motor (363) is fixedly connected to a second gear (3631) that meshes with a second rack (362). A vertical beam (37) is connected to the side of the sliding seat (36) near the raw material roll (22). The vertical beam (37) is slidably connected to the sliding seat (36). A third rack (372) is fixedly connected to the side wall of the vertical beam (37). A second motor (38) is fixedly connected to the sliding seat (36). The output shaft of the second motor (38) is fixedly connected to a third gear (381) that meshes with the third rack (372). A connecting assembly (39) for fixing the end of the raw material roll (22) is connected to the vertical beam (37).

7. The method for printing flexible electromagnetic metamaterials by inkjet printing according to claim 6, characterized in that, The connecting assembly (39) includes a connecting seat (391) that is bolted to the side wall of the vertical beam (37). A flexible gripper (392) is fixedly connected to the side of the connecting seat (391) away from the vertical beam (37). The end of the raw material roll (22) is inserted into the flexible gripper (392). The end of the raw material roll (22) and the flexible gripper (392) are fixedly connected by bolts.

8. The method for printing flexible electromagnetic metamaterials by inkjet printing according to claim 6, characterized in that, The adjustment mechanism (24) includes a first support base (241) fixedly connected to the upper surface of the support platform (2), a third motor (242) fixedly connected to the first support base (241), a first lead screw (243) fixedly connected to the output shaft of the third motor (242), a first connecting block (244) threadedly connected to the first support base (241), a second support base (245) fixedly connected to the upper surface of the first connecting block (244), a fourth motor (246) fixedly connected to the second support base (245), a second lead screw (247) fixedly connected to the output shaft of the fourth motor (246), a second connecting block (248) threadedly connected to the second support base (245), and the upper surface of the second connecting block (248) fixedly connected to the inkjet printer body (23).

9. The method for printing flexible electromagnetic metamaterials by inkjet printing according to claim 6, characterized in that, The unwinding mechanism (3) includes a first fixed seat (41) and a second fixed seat (42) fixedly connected to the upper surface of the support platform (2). The second fixed seat (42) is rotatably connected to a rotating block (43). The rotating block (43) is provided with a rotating groove (431) for the end of the take-up roll (27) to be inserted. A sixth motor (44) is fixedly connected to the side wall of the first fixed seat (41). A pair of clamping blocks (45) are provided between the output shaft of the sixth motor (44) and the end of the take-up roll (27). The pair of clamping blocks (45) are fixedly connected by bolts.

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