A circulating ink stack and control method based on three-dimensional printing of electronic equipment

Abstract

A circulating ink stack and control method based on three-dimensional printing of electronic equipment, comprising a circulating ink stack box, the rear of the circulating ink stack box is connected to an ink supply system through a movable secondary ink cartridge fixture and an automatic detection and ink supply system, the automatic detection and ink supply system, the automatic ink scraping and ink suction recovery system and the printing nozzle cooperate, the bottom of the circulating ink stack box is connected to an ink precipitation prevention device, and the front of the circulating ink stack box is connected to an automatic control panel; the automatic detection and ink supply system, the movable secondary ink cartridge fixture, the automatic control panel, and the ink precipitation prevention device are integrated into one through the circulating ink stack box, the automatic ink scraping and ink suction recovery system is placed under the printing nozzle, and the automatic control panel controls the automatic ink scraping and ink suction recovery system; the present invention integrates the functions of nozzle cleaning, ink supply, and ink recovery, and has the functions of absorbing excess ink on the printing nozzle, scraping and cleaning the nozzle, automatically detecting and providing ink, automatically recovering waste ink, and preventing solute precipitation in the ink.

Description

Technical Field

[0001] The present invention belongs to the technical field of three-dimensional printing of electronic equipment, and in particular relates to a circulating ink stack and a control method based on three-dimensional printing of electronic equipment. Background Art

[0002] In recent years, with the increasing popularity of the field of 3D printing of electronic equipment, the materials required for 3D printing of electronic equipment generally involve nano-metal silver solutions, photocurable resin solutions and nano-ceramic solutions. These three solutions are used as printing inks for electronic equipment. During the printing process, they will mainly cause problems such as insufficient ink in the ink cartridge, waste ink, and ink hanging on the print head and nozzle blockage. Previously, the solutions to these problems were usually manual, such as using disposable syringes to add and recycle ink, and using dust-free cloth and other materials to wipe the nozzle to solve the problems of ink hanging on the print head and nozzle blockage. Since the 3D printing process of electronic equipment is relatively complicated and takes a long time, it is often necessary to squeeze ink and clean the nozzle during the printing process to ensure good printing results. The manual processing method not only consumes manpower, but also has a certain impact on the printing effect and printing efficiency. Now there are simple ink scraping and ink absorption tools, which have optimized the process to a certain extent, but there is still a huge inconvenience.

[0003] The current cleaning and maintenance methods for ordinary flat printing nozzles are to use an ink scraper to scrape ink from a single nozzle (Chinese patent CN202221710847.5, named as an ink scraper assembly and ink stack with waste ink collection and guidance function), and an immersion sensor automatic ink supply device for ordinary printers (Chinese patent CN202122325974.5, named as a printer automatic ink supply system). Most of the current technologies are aimed at the field of ordinary ink flat printers, while in the field of three-dimensional printing of electronic equipment based on the above three materials, there is a lack of equipment that integrates nozzle cleaning, ink supply, and ink recovery.

[0004] In summary, the problems existing in the prior art are: the existing nozzle cleaning technologies are mostly aimed at ordinary plane printing and 3D printing of a single material, but in the field of 3D printing of electronic equipment, there is a gap in this technology, and the technologies related to ordinary plane printing and 3D printing cannot be applied to 3D printing of electronic equipment; with the current existing technology, the cleaning of the printing nozzle cannot achieve ink recovery, because there will be an ink test spraying process during the printing process. If there is no ink recovery function, it will lead to waste of precious metal ink materials; the current technology does not have an integrated ink circulation device and can only solve certain problems one-sidedly. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a circulating ink stack and control method based on three-dimensional printing of electronic equipment, which integrates the functions of nozzle cleaning, ink supply, and ink recovery, and has the functions of absorbing excess ink on the three-dimensional printing nozzle of electronic equipment, scraping and cleaning the nozzle, automatically detecting and providing ink, automatically recovering waste ink, preventing solute precipitation in the ink, and maintaining the uniform state of the ink.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A circulating ink stack based on three-dimensional printing of electronic equipment includes a circulating ink stack box 3, the rear of the circulating ink stack box 3 is connected to an automatic detection and ink supply system 1 through a movable secondary ink cartridge fixture 2, the automatic detection and ink supply system 1, an automatic ink scraping and ink absorption recovery system 5 and a printing nozzle cooperate, the bottom of the circulating ink stack box 3 is connected to an anti-ink precipitation device 6, and the front of the circulating ink stack box 3 is connected to an automatic control panel 4; the automatic detection and ink supply system 1, the movable secondary ink cartridge fixture 2, the automatic control panel 4, and the anti-ink precipitation device 6 are integrated into one through the circulating ink stack box 3, the automatic ink scraping and ink absorption recovery system 5 is placed below the printing nozzle, and the automatic control panel 4 controls the automatic ink scraping and ink absorption recovery system 5.

[0008] The automatic detection and ink supply system 1 comprises a primary ink cartridge 19 and a secondary ink cartridge 14;

[0009] The primary ink cartridge 19 is connected to a primary ink cartridge ink nozzle 110;

[0010] A secondary ink cartridge ink nozzle 15 is connected below the secondary ink cartridge 14, a secondary ink cartridge connector 12 is connected above the secondary ink cartridge 14 via a sealing ring 13, and an ultrasonic liquid level distance measuring device 11 is connected above the secondary ink cartridge connector 12;

[0011] The secondary ink cartridge ink nozzle 15 is connected to the ink supply peristaltic pump 17 through the ink supply pipe 111, and the ink supply peristaltic pump 17 is connected to the primary ink cartridge ink nozzle 110 through the ink supply pipe 111 through the one-way solenoid valve 16. The one-way solenoid valve 16 and the ink supply peristaltic pump 17 are fixed in the solenoid valve and ink supply peristaltic pump fixing frame 18.

[0012] The movable secondary ink cartridge clamp 2 includes a clamp mechanism fixing seat 25, to which a lateral movable frame 24 is connected, to which a plurality of fixing seat height fine-tuning mechanisms 23 are connected, and each fixing seat height fine-tuning mechanism 23 is connected to an ink cartridge bottom fixing seat 21 and an ink cartridge top fixing seat 22.

[0013] The circulating ink stack box 3 includes a shell 34; a primary ink cartridge mounting slot 31 is provided at the lower rear side of the shell 34, an automatic control panel mounting slot 33 is provided above the shell 34, and the automatic control panel 4 is installed on the automatic control panel mounting slot; the circulating ink stack control system hardware and wire integration box 32 are connected above the shell 34.

[0014] The automatic control panel 4 includes a liquid crystal display screen 41 , an ultrasonic vibration dispersion rod control button 42 , a solenoid valve control button 43 , an ink scraping control button 44 , and a liquid level distance measuring button 45 .

[0015] The automatic ink scraping and ink absorbing recovery system 5 comprises an ink absorbing peristaltic pump 51, the ink absorbing peristaltic pump 51 is connected to an ink absorbing peristaltic pump fixing frame 52, the ink absorbing peristaltic pump fixing frame 52 is connected to a tank shell 513, the inlet of the ink absorbing peristaltic pump 51 is connected to an ink absorbing channel 53, the ink absorbing channel 53 is connected to the tank shell 513, and the ink absorbing channel 53 is connected to a hemispherical ink absorbing head 54;

[0016] The scraper rotating shaft 56 is fixed on the tank shell 513 through the bearing 55, and the scraper rotating shaft 56 is connected with the scraper blade 57, the scraper blade 57 cooperates with the scraper blade cleaning tank 510, the scraper blade cleaning tank 510 is fixed on the tank shell 513, the scraper blade cleaning tank 510 is connected to the ink absorption channel 53, and the scraper rotating shaft 56 is connected to the scraper driving motor 512 through the coupling 511;

[0017] The outlet of the ink suction peristaltic pump 51 is connected to the ink recovery cartridge ink nozzle 58 provided above the ink recovery cartridge 59 through an ink suction pipe 514 .

[0018] The ink precipitation prevention device 6 comprises an amplitude transformer 61, which is connected to an ultrasonic generator 63 via an ultrasonic vibration sensor 62; the ink precipitation prevention device 6 is installed in a primary ink cartridge 19 filled with a nano-ceramic solution.

[0019] Three primary ink cartridges 19 filled with different solutions are placed in the primary ink cartridge mounting slot 31, the secondary ink cartridge 14 is connected to the ink cartridge bottom fixing seat 21 and the ink cartridge top fixing seat 22, the secondary ink cartridge connector 12 is installed on the top of the secondary ink cartridge 14, the ultrasonic liquid level measuring device 11 is installed on the other end of the secondary ink cartridge connector 12, and the single-way solenoid valve 16 and the ink supply peristaltic pump 17 are installed at the bottom of the shell 34 of the circulating ink stack box using the solenoid valve and ink supply peristaltic pump fixing bracket 18.

[0020] The fixture mechanism fixing seat 25 is installed outside the circulating ink stack control system hardware and wire integration box 32.

[0021] The ink suction peristaltic pump 51 and the ink suction peristaltic pump fixing frame 52 are installed on the side of the tank shell 513, the ink suction channel 53 is fixed at the bottom of the tank shell 513, the ink outlet is connected to the ink suction peristaltic pump 51, the hemispherical ink suction head 54 is installed on the ink inlet above the ink suction channel 53, the ink scraper 57 is connected to the ink scraper rotating shaft 56 with a mortise and tenon structure, and the four bearings 55 are respectively fixed on the inner side of the tank shell 513. The ink scraper driving motor 512 drives the ink scraper rotating shaft 56 to rotate. The ink scraper cleaning tank 510 is fixed at the bottom of the tank shell 513 and keeps a distance from the ink scraper 57 to avoid interference. The ink outlet of the ink suction peristaltic pump 51 is connected to the ink nozzle 58 of the recovery ink cartridge, and the waste ink is transported to the recovery ink cartridge 59 for storage through the ink suction peristaltic pump 51.

[0022] The ultrasonic generator 63 is connected to the side of the first-stage ink cartridge 19 through threads, and the horn 61 is placed inside the first-stage ink cartridge 19.

[0023] A control method for a circulating ink stack based on three-dimensional printing of electronic equipment, including control of ink supply, ink scraping and ink absorption, and control of an ink precipitation prevention device;

[0024] Ink supply control: A set of slicing programs calculates the amount of ink required for printing each layer of graphics, plus the product of the number of test sprays required for each layer of graphics and the amount of ink required for the test sprays, and records it as the amount of ink required for unit printing. The amount of ink required for a test spray and scraping after the K group of printing is recorded as the amount of ink required for unit scraping. Before the first printing, the control system controls the single-way solenoid valve 16 to open and the ink supply peristaltic pump 17 to pump out the amount of ink required for a unit of printing and the amount of ink required for a unit of scraping from the primary ink cartridge 19 to the secondary ink cartridge 14. The control system calculates the liquid level height of the ink in the secondary ink cartridge 14 and feeds this height back to the ultrasonic liquid level distance measuring device 11, which continuously measures the liquid level. The liquid level height of the secondary ink cartridge 14 is fed back to the control system. When the ink volume in the secondary ink cartridge 14 reaches the specified height G, the control system controls the single-way solenoid valve 16 and the ink supply peristaltic pump 17 to stop, and the ink pumping ends. When the last group of injections of the first layer of graphics is being performed, the ink supply process of the ink volume required for unit printing of the second layer of graphics and the ink volume required for unit scraping of the graphics is performed, and the ink supply process of subsequent graphics printing is cycled with the above-mentioned ink supply control method. If there is a process of debugging the injection during the printing process, the required ink volume is input into the automatic control panel 4, and the control system will control the single-way solenoid valve 16 and the ink supply peristaltic pump 17 to work, and pump the specified amount of ink from the primary ink cartridge 19 into the secondary ink cartridge 14.

[0025] Ink scraping and ink absorption: The ink material required for printing of an electronic device is one or more. Two ink scraping blades form a group, and the angle between the two ink scraping blades is α°. In the case of ink scraping, the angles between the two ink scraping blades 57 and the horizontal plane are α / 2°, that is, the angle with the plane of the print nozzle is α / 2°. The print nozzle moves downward in a direction perpendicular to the tank shell 513. The top of the ink scraping blade 57 and the hemispherical ink absorption head 54 are both in contact with the plane of the print nozzle. When the ink absorption peristaltic pump 51 is running, a negative pressure is formed between the hemispherical ink absorption head 54 and the print nozzle. environment, excess residual ink on the print nozzle will be sucked into the recovery ink cartridge 59; under the control of the printer, the print nozzle moves in a direction perpendicular to the ink scraping rotation axis 56, and first performs an ink absorbing process. When the print nozzle moves to the point where there is no contact with the hemispherical ink absorbing head 54, the ink absorbing peristaltic pump 51 stops moving. When the print nozzle completely passes through the two ink scraping blades 57, the control system controls the ink scraping drive motor 512 to rotate 180°, and the two above-mentioned ink scraping blades 57 are cleaned in the ink scraping blade cleaning tank 510. The above process is repeated for multiple scraping and ink absorbing cycles.

[0026] The control of the anti-ink precipitation device includes:

[0027] Control of the ink precipitation prevention device during non-printing process: timing control of the ultrasonic generator 63 to work once every A hours, and keep working for W minutes at a time;

[0028] Control of the ink precipitation prevention device during printing: During the printing process of each layer of graphics, when the reciprocal X groups of inkjet printing of each layer of graphics are printed, the control system sends a start signal to the ultrasonic generator 63 of the ink precipitation prevention device, and the amplitude change rod 61 changes the amplitude of the ultrasonic wave emitted by the ultrasonic generator 63, thereby increasing its vibration speed ratio, and mixing the ink in the first-level ink cartridge 19 evenly through ultrasonic waves. This process continues until the current layer of graphics is printed, and the control system sends a shutdown signal, and the ultrasonic generator stops emitting ultrasonic waves.

[0029] Combining all the above technical solutions, the beneficial effects of the present invention are:

[0030] (1) The present invention integrates ink supply, ink absorption and scraping, and ink precipitation prevention into one, and adopts a fully automatic control method, which fundamentally solves the problems of ink addition, recovery, storage, and nozzle cleaning in three-dimensional printing of electronic equipment.

[0031] (2) The ink supply control, ink scraping and ink absorption control and ink precipitation prevention device control in the present invention are based on the three-dimensional printing process of electronic equipment, and provide a set of scientific control methods, which can ensure the scientific nature of ink supply to the greatest extent, effectively improve the problems of ink hanging and nozzle blockage of the printing nozzle, and eliminate the problem of solute precipitation in the ink solution. The above three technical methods indirectly optimize the printing effect of electronic equipment.

[0032] (3) The control method of the present invention can be adjusted according to the actual conditions of the electronic equipment three-dimensional printing device and the ink solution. By changing the control method parameters and the mechanical mechanism of the present invention, the ink supply, ink scraping, ink absorption and anti-ink precipitation effects can be optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of a circulating ink stack based on three-dimensional printing of electronic equipment according to an embodiment of the present invention.

[0034] Figure 2 It is a schematic diagram of an automatic detection and ink supply system according to an embodiment of the present invention.

[0035] Figure 3 It is a schematic diagram of a movable secondary ink cartridge fixture according to an embodiment of the present invention.

[0036] Figure 4 It is a schematic diagram of a circulating ink stack box according to an embodiment of the present invention.

[0037] Figure 5 Schematic diagram of an automatic control panel according to an embodiment of the present invention.

[0038] Figure 6 It is a schematic diagram of an automatic ink scraping and ink absorbing recovery system according to an embodiment of the present invention.

[0039] Figure 7 It is a cross-sectional view of an automatic ink scraping and ink absorbing recovery system according to an embodiment of the present invention.

[0040] Figure 8 It is a schematic diagram of an ink precipitation prevention device according to an embodiment of the present invention.

[0041] Fig. 9 It is a schematic diagram of a control method for ink quantity detection, debugging and ink supply according to an embodiment of the present invention.

[0042] Fig.10 It is a schematic diagram of the ink scraping and ink absorption control method according to an embodiment of the present invention.

[0043] Fig.11 It is a schematic diagram of a control method of an ink precipitation prevention device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] like Figure 1As shown, a circulating ink stack based on three-dimensional printing of electronic equipment includes an automatic detection and ink supply system 1, a movable secondary ink cartridge fixture 2, a circulating ink stack box 3, an automatic control panel 4, an automatic ink scraping and ink absorbing recovery system 5, and an ink precipitation prevention device 6; the rear of the circulating ink stack box 3 is connected to the automatic detection and ink supply system 1 through the movable secondary ink cartridge fixture 2, the automatic detection and ink supply system 1, the automatic ink scraping and ink absorbing recovery system 5 and the printing nozzle cooperate, the bottom of the circulating ink stack box 3 is connected to the ink precipitation prevention device 6, and the front of the circulating ink stack box 3 is connected with the automatic control panel 4; the automatic detection and ink supply system 1, the movable secondary ink cartridge fixture 2, the automatic control panel 4, and the ink precipitation prevention device 6 are integrated into one through the circulating ink stack box 3, the automatic ink scraping and ink absorbing recovery system 5 is not integrated in the circulating ink stack box 3, and it is placed below the printing nozzle, but the automatic control panel 4 controls the automatic ink scraping and ink absorbing recovery system 5 through a wireless communication or wired communication module.

[0046] like Figure 2 As shown, the automatic detection and ink supply system 1 includes an ultrasonic liquid level ranging device 11, a secondary ink cartridge connector 12, a sealing ring 13, a secondary ink cartridge 14, a secondary ink cartridge ink nozzle 15, a single-way solenoid valve 16, an ink supply peristaltic pump 17, a solenoid valve and ink supply peristaltic pump fixing bracket 18, a primary ink cartridge 19, a primary ink cartridge ink nozzle 110, and an ink supply pipeline 111; its function is to manually debug and automatically detect the ink amount in the secondary ink cartridge 19 connected to the print head, and automatically add ink;

[0047] The primary ink cartridge 19 is connected to a primary ink cartridge ink nozzle 110;

[0048] A secondary ink cartridge ink nozzle 15 is connected below the secondary ink cartridge 14, a secondary ink cartridge connector 12 is connected above the secondary ink cartridge 14 via a sealing ring 13, and an ultrasonic liquid level distance measuring device 11 is connected above the secondary ink cartridge connector 12;

[0049] The secondary ink cartridge ink nozzle 15 is connected to the ink supply peristaltic pump 17 through the ink supply pipe 111, and the ink supply peristaltic pump 17 is connected to the primary ink cartridge ink nozzle 110 through the ink supply pipe 111 through the one-way solenoid valve 16. The one-way solenoid valve 16 and the ink supply peristaltic pump 17 are fixed in the solenoid valve and ink supply peristaltic pump fixing frame 18.

[0050] like Figure 3As shown, the movable secondary ink cartridge fixture 2 includes an ink cartridge bottom fixing seat 21, an ink cartridge top fixing seat 22, a fixing seat height fine-adjustment mechanism 23, a lateral moving frame 24, and a fixture mechanism fixing seat 25; the fixture mechanism fixing seat 25 is connected to the lateral moving frame 24, and the lateral moving frame 24 is connected to three fixing seat height fine-adjustment mechanisms 23, and each fixing seat height fine-adjustment mechanism 23 is connected to an ink cartridge bottom fixing seat 21 and an ink cartridge top fixing seat 22; the function of the movable secondary ink cartridge fixture 2 is to fix the secondary ink cartridge 14 and to continuously adjust the lateral position of the secondary ink cartridge 14.

[0051] like Figure 4 As shown, the circulating ink stack box 3 includes a primary ink cartridge installation slot 31, a circulating ink stack control system hardware and wire integration box 32, an automatic control panel installation slot 33, and a shell 34; a primary ink cartridge installation slot 31 is provided on the lower rear side of the shell 34, an automatic control panel installation slot 33 is provided above the shell 34, and a circulating ink stack control system hardware and a wire integration box 32 are connected to the top of the shell 34; the function of the circulating ink stack box 3 is to fix other systems and devices.

[0052] like Figure 5 As shown, the automatic control panel 4 includes a liquid crystal display screen 41, an ultrasonic vibration dispersion rod control button 42, a solenoid valve control button 43, an ink scraping control button 44, and a liquid level measuring button 45; the function of the automatic control panel 4 is to interact with the user, so that the user can view and control the operating status of the circulating ink stack in real time.

[0053] like Figure 6 , Figure 7 As shown, the automatic ink scraping and ink absorbing and recycling system 5 includes an ink absorbing peristaltic pump 51, an ink absorbing peristaltic pump fixing frame 52, an ink absorbing channel 53, a hemispherical ink absorbing head 54, a bearing 55, an ink scraping rotating shaft 56, an ink scraping blade 57, an ink recovery cartridge ink nozzle 58, an ink recovery cartridge 59, an ink scraping blade cleaning tank 510, a coupling 511, an ink scraping driving motor 512, a tank shell 513, and an ink absorbing pipeline 514;

[0054] The ink suction peristaltic pump 51 is connected to the ink suction peristaltic pump fixing frame 52, the ink suction peristaltic pump fixing frame 52 is connected to the tank shell 513, the ink suction peristaltic pump 51 is connected to the ink suction channel 53, the ink suction channel 53 is connected to the tank shell 513, and the ink suction channel 53 is connected to the hemispherical ink suction head 54;

[0055] The scraper rotating shaft 56 is fixed on the tank shell 513 through the bearing 55, and the scraper rotating shaft 56 is connected with the scraper blade 57, the scraper blade 57 cooperates with the scraper blade cleaning tank 510, the scraper blade cleaning tank 510 is fixed on the tank shell 513, the scraper blade cleaning tank 510 is connected to the ink absorption channel 53, and the scraper rotating shaft 56 is connected to the scraper driving motor 512 through the coupling 511;

[0056] The outlet of the ink suction peristaltic pump 51 is connected to the ink recovery cartridge ink nozzle 58 provided above the ink recovery cartridge 59 through an ink suction pipe 514 .

[0057] The automatic ink scraping and ink recovery system 5 is used to clean the print head and recover the waste residual ink.

[0058] like Figure 8 As shown, the ink precipitation prevention device 6 includes a variable amplitude rod 61, an ultrasonic vibration sensor 62, and an ultrasonic generator 63; the variable amplitude rod 61 is connected to the ultrasonic vibration sensor 62 and the ultrasonic generator 63; the ink precipitation prevention device 6 is installed in a primary ink cartridge 19 containing a nano-ceramic solution, and its function is to prevent the precipitation of nano-ceramic solutes in the nano-ceramic solution, resulting in uneven mixing of the solution and thus affecting the printing effect.

[0059] like Figure 1-Figure 8 As shown, three primary ink cartridges 19 containing different ink solutions are placed in the primary ink cartridge installation slot 31; the secondary ink cartridge 14 is connected to the ink cartridge bottom fixing seat 21 and the ink cartridge top fixing seat 22 by bolts, and the bolt knob of the ink cartridge bottom fixing seat 21 can adjust the front and rear positions of the secondary ink cartridge 14 for connecting the ink supply peristaltic pump 17; after the front and rear positions of the secondary ink cartridge 14 are determined, the secondary ink cartridge 14 can be fixed by adjusting the bolt knob of the ink cartridge top fixing seat 22, and the secondary ink cartridge connector 12 is installed on the top of the secondary ink cartridge 14 by threaded connection and sealed by the sealing ring 13. The ink cartridge 14 requires a negative pressure environment to ensure that the ink does not leak from the nozzle when not printing, so a connector for connecting to the negative pressure system is provided on the secondary ink cartridge connector 12. The ultrasonic liquid level measuring device 11 is threadedly installed on the other end of the secondary ink cartridge connector 12 and sealed with a sealing ring 13. The one-way solenoid valve 16 and the ink supply peristaltic pump 17 are installed on the bottom of the shell 34 of the circulating ink stack box by bolts using a solenoid valve and an ink supply peristaltic pump fixing bracket 18. The one-way solenoid valve 16 and the ink supply peristaltic pump 17 are connected to the primary ink cartridge 19 and the secondary ink cartridge 14 through the primary ink cartridge ink nozzle 110 and the secondary ink cartridge ink nozzle 15 respectively.

[0060] The fixture mechanism fixing seat 25 is installed on the outside of the circulating ink stack control system hardware and wire integrated box 32 by bolts, the automatic control panel 4 is installed on the automatic control panel mounting slot 33, the ink suction peristaltic pump 51 and the ink suction peristaltic pump fixing frame 52 are installed on the side of the tank shell 513 by screws, the ink suction channel 53 is fixed to the bottom of the inner side of the tank shell 513, the ink outlet of the ink suction channel 53 is connected to the ink suction peristaltic pump 51, the hemispherical ink suction head 54 is installed on the upper ink inlet of the ink suction channel 53 by thread, the ink scraping blade 57 is connected to the ink scraping rotating shaft 56 by a mortise and tenon structure, and each ink scraping blade 57 has 4 oblique drainage holes on the side. The purpose of the groove is to guide the ink on the top of the ink scraper blade to flow into the ink scraper blade cleaning groove 510 to prevent the ink from sticking to the top of the ink scraper blade and curing to affect the ink scraping effect. The four bearings 55 are fixed inside the groove shell 513 respectively. The ink scraper drive motor 512 drives the ink scraper rotating shaft 56 to rotate through the coupling 511 and the bearing. The ink scraper blade cleaning groove 510 is fixed at the bottom of the groove shell 513 and keeps a certain distance from the ink scraper blade 57 to avoid interference. The ink outlet of the ink suction peristaltic pump 51 is connected to the ink nozzle 58 of the recovery ink cartridge, and the waste ink is transported to the recovery ink cartridge 59 for storage through the ink suction peristaltic pump 51. The ultrasonic generator 63 is connected to the side of the primary ink cartridge 19 by a thread, and the ultrasonic vibration sensor 62 and the horn 61 are connected to the ultrasonic generator 63 in sequence, and the horn 61 is placed inside the primary ink cartridge 19.

[0061] A control method for a circulating ink stack based on three-dimensional printing of electronic equipment, including control of ink supply, ink scraping and ink absorption, and control of an ink precipitation prevention device;

[0062] The 3D printing of electronic equipment includes circuit board printing and antenna printing. The main method currently adopted is to divide the printed graphics into N layers (N is a positive integer). The type and amount of ink required for the graphics of each layer are different. In order to prevent the ink solute of the secondary ink cartridge from precipitating and thus affecting the printing effect, the amount of ink in the secondary ink cartridge should not be stored for a long time. The inkjet process of the electronic assembly 3D printing nozzle is briefly described. The printing substrate is used as a carrier. Different inks are sprayed from different nozzle holes of the printing nozzle according to the printing graphics. During the printing process, the printing nozzle is stationary, and the printing substrate moves back and forth perpendicular to the direction of the printing nozzle. The printing is basically triggered every time it passes under the printing nozzle. M times (M is a positive integer) of spraying are recorded as a group. There will be a test spray before each group is sprayed. During the printing process, K groups can be set to perform a test spray and ink scraping. The main purpose of both is to prevent nozzle blockage and ensure a good printing effect.

[0063] like Fig. 9As shown, ink supply control: a set of slicing programs calculates the amount of ink required for printing each layer of graphics, plus the product of the number of test sprays required for each layer of graphics and the approximate amount of ink required for the test sprays, and records it as the unit amount of ink required for printing. The approximate amount of ink required for a test spray and ink scraping after the K group of printing is recorded as the unit amount of ink required for ink scraping. Before the first printing, the control system controls the opening of the single-way solenoid valve 16 and the rotation of the motor of the ink supply peristaltic pump 17 to pump out a unit amount of ink required for printing and a unit amount of ink required for ink scraping from the primary ink cartridge 19 to the secondary ink cartridge 14. The control system calculates the liquid level height of the ink in the secondary ink cartridge 14 and feeds this height back to the ultrasonic liquid level distance measuring device 11. The ultrasonic liquid level distance measuring device 11 continuously measures the liquid level of the secondary ink cartridge 19. 4, and is fed back to the control system. When the ink volume in the secondary ink cartridge 14 reaches the specified height G, the control system controls the single-way solenoid valve 16 and the ink supply peristaltic pump 17 to stop the motor, and the ink pumping ends. When the last group of injections of the first layer of graphics is being performed, the ink supply process of the ink volume required for unit printing of the second layer of graphics and the ink volume required for unit scraping is performed, and the subsequent graphics printing ink supply process is cycled with the above-mentioned ink supply control method. If there are debugging injection processes and the like during the printing process, the required ink volume can be input in the automatic control panel 4, and the control system will control the single-way solenoid valve 16 and the ink supply peristaltic pump 17 to work, and the specified ink volume is pumped out from the primary ink cartridge 19 into the secondary ink cartridge 14. For the specific control method, refer to the above-mentioned graphics printing ink supply method.

[0064] like Fig.10 As shown, ink scraping and ink absorption: the purpose is to clean the print head before printing to ensure that the nozzle is not blocked and there is no ink hanging on the print head; under normal circumstances, the ink material required for printing of an electronic device is one or more, and two ink scraping blades form a group, and the angle between the two ink scraping blades is α°. Considering that different angles have different scraping effects on different inks, the ink scraping blade angle α set in the present invention is determined according to different embodiments. In this embodiment, α is set to 90°. In the case of ink scraping, the angles between the two ink scraping blades 57 and the horizontal plane are α / 2°, that is, the angle with the plane of the print head is α / 2°. The print head descends in a direction perpendicular to the slot shell 513, and the top of the ink scraping blade 57 The hemispherical ink absorbing head 54 and the printing nozzle are both in contact with the plane of the printing nozzle. When the ink absorbing peristaltic pump 51 is running, a negative pressure environment will be formed between the hemispherical ink absorbing head 54 and the printing nozzle, and the excess residual ink on the printing nozzle will be sucked into the recovery ink cartridge 59; the printing nozzle moves in a direction perpendicular to the ink scraping rotation axis 56 under the control of the printer, and first performs an ink absorbing process. When the printing nozzle moves to the point where there is no contact with the hemispherical ink absorbing head 54, the ink absorbing peristaltic pump 51 stops moving. When the printing nozzle completely passes through the two ink scraping blades 57, the control system controls the ink scraping drive motor 512 to rotate 180°, and the two above-mentioned ink scraping blades 57 are cleaned in the ink scraping blade cleaning tank 510. Multiple ink scraping and ink absorbing can be repeated in the above process.

[0065] like Fig.11 As shown, the control of the ink precipitation prevention device includes:

[0066] Control of the ink precipitation prevention device during the non-printing process: The ultrasonic generator 63 is controlled to work once every A hours (set to 2 hours in this embodiment) and keep working for W minutes (set to 2 minutes in this embodiment).

[0067] Control of the ink precipitation prevention device during printing: During the printing process of each layer of graphics, when the reciprocal X groups of inkjet printing of each layer of graphics are printed, the control system sends a start signal to the ultrasonic generator 63 of the ink precipitation prevention device, and the amplitude change rod 61 changes the amplitude of the ultrasonic wave emitted by the ultrasonic generator 63 (generally increases it), improves its vibration speed ratio, and thus improves efficiency, and mixes the ink in the primary ink cartridge 19 evenly through ultrasonic waves. This process continues until the current layer of graphics is printed, and the control system sends a shutdown signal, and the ultrasonic generator stops emitting ultrasonic waves.

[0068] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0069] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A circulating ink stack based on three-dimensional printing of electronic equipment, characterized in that: The invention comprises a circulating ink stack box (3), wherein the rear of the circulating ink stack box (3) is connected to an automatic detection and ink supply system (1) via a movable secondary ink cartridge fixture (2), the automatic detection and ink supply system (1), an automatic ink scraping and ink suction recovery system (5) and a printing nozzle cooperate with each other, the bottom of the circulating ink stack box (3) is connected to an ink precipitation prevention device (6), and the front of the circulating ink stack box (3) is connected to an automatic control panel (4); the automatic detection and ink supply system (1), the movable secondary ink cartridge fixture (2), the automatic control panel (4) and the ink precipitation prevention device (6) are integrated into one through the circulating ink stack box (3), the automatic ink scraping and ink suction recovery system (5) is placed below the printing nozzle, and the automatic control panel (4) controls the automatic ink scraping and ink suction recovery system (5); The automatic detection and ink supply system (1) comprises a primary ink cartridge (19) and a secondary ink cartridge (14); The first-level ink cartridge (19) is connected to a first-level ink cartridge ink nozzle (110); A secondary ink cartridge ink nozzle (15) is connected below the secondary ink cartridge (14); a secondary ink cartridge connector (12) is connected above the secondary ink cartridge (14) via a sealing ring (13); and an ultrasonic liquid level distance measuring device (11) is connected above the secondary ink cartridge connector (12); The secondary ink cartridge ink nozzle (15) is connected to the ink supply peristaltic pump (17) via an ink supply pipeline (111); the ink supply peristaltic pump (17) is connected to the primary ink cartridge ink nozzle (110) via the ink supply pipeline (111) via a single-way solenoid valve (16); the single-way solenoid valve (16) and the ink supply peristaltic pump (17) are fixed in a solenoid valve and ink supply peristaltic pump fixing frame (18); The movable secondary ink cartridge fixture (2) comprises a fixture mechanism fixing seat (25), the fixture mechanism fixing seat (25) is connected to a lateral moving frame (24), the lateral moving frame (24) is connected to a plurality of fixing seat height fine-adjusting mechanisms (23), each fixing seat height fine-adjusting mechanism (23) is connected to an ink cartridge bottom fixing seat (21) and an ink cartridge top fixing seat (22); The circulating ink stack box (3) comprises a shell (34); a primary ink cartridge mounting slot (31) is provided at the lower rear side of the shell (34); an automatic control panel mounting slot (33) is provided above the shell (34); the automatic control panel (4) is mounted on the automatic control panel mounting slot; the circulating ink stack control system hardware and a wire integration box (32) are connected above the shell (34); The automatic ink scraping and ink absorbing recovery system (5) comprises an ink absorbing peristaltic pump (51), the ink absorbing peristaltic pump (51) is connected to an ink absorbing peristaltic pump fixing frame (52), the ink absorbing peristaltic pump fixing frame (52) is connected to a tank shell (513), the ink absorbing peristaltic pump (51) is connected to an ink absorbing channel (53), the ink absorbing channel (53) is connected to the tank shell (513), and the ink absorbing channel (53) is connected to a hemispherical ink absorbing head (54); The ink scraping rotating shaft (56) is fixed to the tank shell (513) via a bearing (55); an ink scraping blade (57) is connected to the ink scraping rotating shaft (56); the ink scraping blade (57) cooperates with an ink scraping blade cleaning tank (510); the ink scraping blade cleaning tank (510) is fixed to the tank shell (513); the ink scraping blade cleaning tank (510) is connected to the ink absorption channel (53); and the ink scraping rotating shaft (56) is connected to an ink scraping driving motor (512) via a coupling (511); The outlet of the ink suction peristaltic pump (51) is connected to an ink recovery cartridge ink nozzle (58) provided above the ink recovery cartridge (59) via an ink suction pipe (514); The ink precipitation prevention device (6) comprises a horn (61), the horn (61) being connected to an ultrasonic generator (63) via an ultrasonic vibration sensor (62); the ink precipitation prevention device (6) is installed in a primary ink cartridge (19) containing a nano-ceramic solution; The control method of the circulating ink stack includes ink supply control, ink scraping and ink absorption control, and control of an ink precipitation prevention device; Ink supply control: A set of slicing programs calculates the amount of ink required for printing each layer of graphics plus the product of the number of test sprays required for each layer of graphics and the amount of ink required for the test sprays, and records it as the amount of ink required for unit printing. The amount of ink required for one test spray and ink scraping after the K group of printing is recorded as the amount of ink required for unit scraping. Before the first printing, the control system controls the single-way solenoid valve (16) to open and the ink supply peristaltic pump (17) to pump out the amount of ink required for a unit of printing and the amount of ink required for a unit of ink scraping from the primary ink cartridge (19) to the secondary ink cartridge (14). The control system calculates the ink volume in the secondary ink cartridge (14) and calculates the ink volume. The liquid level height is fed back to the ultrasonic liquid level distance measuring device (11), and the ultrasonic liquid level distance measuring device (11) continuously measures the liquid level height of the secondary ink cartridge (14) and feeds back to the control system. When the ink volume in the secondary ink cartridge (14) reaches the specified height G, the control system controls the single-way solenoid valve (16) and the ink supply peristaltic pump (17) to stop, and the ink pumping ends. When the last group of injections of the first layer of graphics is being performed, the ink supply process of the ink volume required for unit printing of the second layer of graphics and the ink volume required for unit scraping of the second layer of graphics is performed, and the ink supply process of subsequent graphics printing is cycled according to the above-mentioned ink supply control method. If there is a debugging process during the printing process, the required amount of ink is input in the automatic control panel (4), and the control system will control the one-way solenoid valve (16) and the ink supply peristaltic pump (17) to work, and pump out the specified amount of ink from the primary ink cartridge (19) into the secondary ink cartridge (14); Ink scraping and ink absorption: The ink material required for printing of an electronic device is one or more. Two ink scraping blades form a group, and the angle between the two ink scraping blades is α°. When scraping ink, the angles between the two ink scraping blades (57) and the horizontal plane are α / 2°, that is, the angles with the plane of the print head are α / 2°. The print head moves downward in a direction perpendicular to the slot shell (513). The top of the ink scraping blade (57) and the hemispherical ink absorption head (54) are both in contact with the plane of the print head. When the ink absorption peristaltic pump (51) is in operation, a negative pressure environment is formed between the hemispherical ink absorption head (54) and the print head. , the excess residual ink on the print head will be sucked into the recovery ink cartridge (59); the print head moves in a direction perpendicular to the scraper rotation axis (56) under the control of the printer, and first performs an ink absorption process. When the print head moves to a state where there is no contact with the hemispherical ink absorption head (54), the ink absorption peristaltic pump (51) stops moving. When the print head completely passes through the two scraper blades (57), the control system controls the scraper drive motor (512) to rotate 180°, and the two scraper blades (57) are cleaned in the scraper blade cleaning tank (510). The above process is repeated for multiple scraper and ink absorption cycles; The control of the anti-ink precipitation device includes: Control of the ink precipitation prevention device during the non-printing process: timing control of the ultrasonic generator (63) to work once every A hours and keep working for W minutes at a time; Control of the ink precipitation prevention device during the printing process: During the printing process of each layer of graphics, when the reciprocal X groups of ink jets are printed for each layer of graphics, the control system sends a start signal to the ultrasonic generator (63) of the ink precipitation prevention device, and the amplitude change rod (61) changes the amplitude of the ultrasonic wave emitted by the ultrasonic generator (63), thereby increasing its vibration speed ratio, and mixing the ink in the first-level ink cartridge (19) evenly through the ultrasonic wave. This process continues until the current layer of graphics is printed, and the control system sends a shutdown signal, and the ultrasonic generator stops emitting ultrasonic waves.

2. The circulating ink stack according to claim 1, characterized in that: The automatic control panel (4) comprises a liquid crystal display screen (41), an ultrasonic vibration dispersion rod control button (42), a solenoid valve control button (43), an ink scraping control button (44), and a liquid level distance measuring button (45).

3. The circulating ink stack according to claim 1, characterized in that: Three primary ink cartridges (19) containing different solutions are placed in the primary ink cartridge installation slot (31), the secondary ink cartridge (14) is connected to the ink cartridge bottom fixing seat (21) and the ink cartridge top fixing seat (22), the secondary ink cartridge connector (12) is installed on the top of the secondary ink cartridge (14), the ultrasonic liquid level ranging device (11) is installed on the other end of the secondary ink cartridge connector (12), and the single-way solenoid valve (16) and the ink supply peristaltic pump (17) are installed on the bottom of the shell (34) of the circulating ink stack box using the solenoid valve and the ink supply peristaltic pump fixing frame (18).

4. The circulating ink stack according to claim 1, characterized in that: The ink suction peristaltic pump (51) and the ink suction peristaltic pump fixing frame (52) are installed on the side of the tank shell (513), the ink suction channel (53) is fixed at the bottom of the tank shell (513), the ink outlet is connected to the ink suction peristaltic pump (51), the hemispherical ink suction head (54) is installed on the ink inlet above the ink suction channel (53), the ink scraping plate (57) is connected to the ink scraping rotating shaft (56) by a mortise and tenon structure, four bearings (55) are respectively fixed on the inner side of the tank shell (513), the ink scraping driving motor (512) drives the ink scraping rotating shaft (56) to rotate, the ink scraping plate cleaning tank (510) is fixed at the bottom of the tank shell (513) and keeps a distance from the ink scraping plate (57) to avoid interference, the ink outlet of the ink suction peristaltic pump (51) is connected to the ink nozzle (58) of the recovery ink cartridge, and the waste ink is transported to the recovery ink cartridge (59) for storage through the ink suction peristaltic pump (51).

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