An electro-fluidic jet head debugging device and an inkjet printing system

Abstract

The application relates to an electro-fluid ejection head debugging device and an inkjet printing system, comprising: a mounting seat for installing an ink storage part; a transposition mechanism which drives the mounting seat to sequentially pass through a feeding station, an ink feeding station and a position adjustment station; an ink feeding mechanism which is located at the ink feeding station and comprises a quantitative ink discharging assembly for injecting a functional liquid into a needle body; a position adjustment mechanism which is located at the position adjustment station and comprises a pulling assembly and an imaging assembly, the pulling assembly is used for clamping the needle body and driving the needle body to move relative to the mounting part of the ink storage part, and the imaging assembly is used for imaging the needle body, the imaging field of the imaging assembly comprises a calibration point, and the needle tip of the needle body is adapted to move to the calibration point. The application improves the preparation accuracy and efficiency before the use of the ejection head by automatically feeding ink and adjusting the position of the ink storage part at the ink feeding station and the position adjustment station in sequence, and is suitable for the preparation operation requirements of a large number of ejection heads.

Description

Technical Field

[0001] This application relates to the field of electro-hydraulic printing auxiliary equipment, and in particular to an electro-hydraulic printhead adjustment device and an inkjet printing system. Background Technology

[0002] Inkjet printing technology, as an additive manufacturing technology, has advantages such as non-contact, large area, no need for photomasks, rapid manufacturing, low cost of finished products, and direct pattern creation on planar / curved substrates. It is the main manufacturing technology for printed electronics that will replace the long process of photolithography / vacuum (development, etching, exposure and cleaning, etc.) and is widely used in display, sensing, chip, energy, aerospace and other fields.

[0003] Electrofluid inkjet printing technology uses an electric field to pull droplets out of the nozzle, making the diameter of the printed dots much smaller than the nozzle diameter. This reduces the diameter of the ejected droplets, meeting the printing requirements for higher pixel density and greatly improving printing resolution.

[0004] Generally, a current-voltage printhead includes a power supply section and an ink storage section, which are assembled to form the current-voltage printhead. The ink storage section includes a mounting section and a needle body, with the needle body inserted into the mounting section. To ensure the consistency of the current-voltage printhead, when the needle body and the mounting section are assembled into the ink storage section, the distance from the tip of the needle body to the mounting section must be consistent.

[0005] In related technologies, before using an electrohydraulic printhead, a power supply unit and an ink reservoir unit need to be prepared separately. The preparation of the electrohydraulic printhead is then completed by assembling the power supply unit and the ink reservoir unit. During the preparation of the ink reservoir unit, functional fluid needs to be injected into the needle body, and the relative position of the needle body and the mounting part needs to be adjusted.

[0006] However, both ink filling and needle position adjustment in the ink storage section require manual operation. This manual operation results in inconsistent ink amounts each time the needle is filled, and it is also difficult to accurately adjust the needle to the designated position relative to the mounting base when adjusting the needle position. Furthermore, the adjustment efficiency is low, making it difficult to meet the preparation needs of a large number of electro-hydraulic printheads. Summary of the Invention

[0007] This application provides a current-current printhead adjustment device and an inkjet printing system to solve the problem that manual operation for preparing the ink storage section in related technologies is inaccurate and inefficient, and cannot meet the preparation needs of a large number of current-current printheads.

[0008] In a first aspect, an electro-hydraulic nozzle adjustment device is provided, comprising:

[0009] Mounting base, the mounting base is used for mounting the ink storage unit, and the top of the needle of the ink storage unit is arranged in an open manner;

[0010] A shifting mechanism is connected to the mounting base to drive the mounting base to pass sequentially through the feeding station, the ink filling station and the position adjustment station;

[0011] The ink supply mechanism is located at the ink supply station and includes a metering ink dispensing component. The needle body is adapted to move with the mounting base to directly below the metering ink dispensing component, and the metering ink dispensing component is used to inject functional liquid into the needle body.

[0012] A position adjustment mechanism is located at a position adjustment station. The position adjustment mechanism includes a pulling component and an imaging component. The pulling component is used to clamp the needle body and drive the needle body to move relative to the mounting part of the ink storage part. The imaging component is used to image the needle body. The imaging field of view of the imaging component includes a calibration point. The needle tip of the needle body is adapted to move to the calibration point.

[0013] In some embodiments, the electro-hydraulic nozzle adjustment device further includes a correction mechanism, which is installed on the drive end of the switching mechanism and is drivenly connected to the mounting base. The driving direction of the correction mechanism is set at an angle to the driving direction of the switching mechanism.

[0014] The correction mechanism drives the mounting base to move, ensuring that the needle is directly below the quantitative ink dispensing component.

[0015] In some embodiments, the metering ink dispensing component includes:

[0016] Upper inkstone;

[0017] A syringe, wherein the syringe sleeve is mounted on the ink reservoir;

[0018] A squeeze drive assembly, the drive end of which is adapted to press down the piston rod of the syringe.

[0019] In some embodiments, the ink holder includes:

[0020] seat body;

[0021] The fixing seat is fixed to the base body;

[0022] A pressure plate is slidably mounted on the base and positioned above the fixed base, forming a clamping space between the pressure plate and the fixed base; the sleeve includes a limiting plate, which is located between the pressure plate and the fixed base, and the pressure plate presses the limiting plate onto the fixed base.

[0023] In some embodiments, the extrusion drive assembly includes:

[0024] A pressure block is slidably and vertically disposed on the base body and located above the fixed base; a placement groove is provided on the side of the pressure block and an installation groove is provided on the bottom surface of the pressure block; a pressure plate is provided on the top of the piston rod, the pressure plate extends into the placement groove, and the piston rod extends to the bottom of the pressure block through the installation groove;

[0025] A linear module is connected to the pressure block drive to drive the pressure block to move up and down.

[0026] In some embodiments, the inking mechanism further includes:

[0027] Ink feeder frame, wherein the ink feed base is slidably and vertically mounted on the ink feeder frame;

[0028] A lifting drive component is installed on the ink upper frame and is driven to connect with the ink upper base to drive the ink upper base to move up and down.

[0029] The ink seat descends to allow the syringe needle to be inserted into the needle body.

[0030] In some embodiments, the mounting base is provided with a mounting structure for fixing the ink storage part; the mounting structure includes a mounting hole, and the mounting part is inserted into the mounting hole to form a plug-in engagement with the mounting base.

[0031] In some embodiments, the pull assembly includes:

[0032] The gripper is used to hold the needle body;

[0033] A pulling drive component is connected to the gripper drive to drive the gripper to move up and down.

[0034] In some embodiments, the imaging component includes:

[0035] An imaging element is used to image the needle body, and the imaging direction is set at an angle to the driving direction of the switching mechanism.

[0036] A supplementary lighting component, which is used to provide supplementary lighting to the needle body.

[0037] The beneficial effects of the technical solution provided in this application include:

[0038] This application provides an embodiment of an electro-hydraulic printhead debugging device. After the ink storage unit is loaded at the feeding station, the switching mechanism drives the ink storage unit to sequentially fill ink at the ink filling station and adjust the needle position at the position adjustment station, thus completing the preparation work of the ink storage unit of the printhead. Therefore, the debugging and preparation operation of the ink storage unit has a reasonable cycle time and high efficiency, which is suitable for the preparation needs before the use of a large number of printheads.

[0039] At the ink filling station, the quantitative ink dispensing component fills the needle body with functional liquid according to the set functional liquid volume to ensure the consistency of ink filling for each needle body, which is not affected by human experience and operation, thus improving ink filling accuracy and efficiency.

[0040] After inking is complete, the ink reservoir moves to the position adjustment station. The imaging component images the position of the needle body. Firstly, it determines the height of the needle tip and, in conjunction with the pulling component, moves the needle body relative to the mounting part to adjust its position. Using a calibration point within the imaging field of view as a reference, it ensures that the distance from the needle tip to the mounting part is the required distance. This ensures that after the batch ink reservoirs are adjusted, the relative positions of the needle body and the mounting part are consistent, improving the consistency of the ink reservoirs and enhancing the printing quality of subsequent printheads. Secondly, by imaging the needle body, the imaging component can determine the state of the functional fluid inside the needle, especially at the needle tip, and identify the presence of air bubbles, thus removing ink reservoirs that do not meet the requirements.

[0041] Therefore, this electro-hydraulic printhead adjustment device enables automatic pre-use preparation of the ink reservoir, achieving high ink filling accuracy, high position adjustment accuracy, and high printhead preparation efficiency, thus meeting the needs of preparing printheads for large-scale use.

[0042] Secondly, an inkjet printing system is provided, including the electro-hydraulic printhead adjustment device as described above.

[0043] Another embodiment of this application provides an inkjet printing system. Since it includes the above-mentioned electro-hydraulic printhead adjustment device, the beneficial effects of the inkjet printing system are the same as those of the above-mentioned electro-hydraulic printhead adjustment device, and will not be repeated here. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 A schematic diagram of the electro-hydraulic nozzle debugging device provided in the embodiments of this application;

[0046] Figure 2 A schematic diagram of the inking mechanism provided in an embodiment of this application;

[0047] Figure 3 A front view of the inking mechanism provided in an embodiment of this application;

[0048] Figure 4 A schematic diagram of the mounting base, the shifting mechanism, and the correction mechanism provided in the embodiments of this application;

[0049] Figure 5 A schematic diagram of the ink filling mechanism provided in this application embodiment injecting ink into the needle body;

[0050] Figure 6 A schematic diagram of the ink storage unit during position adjustment provided in an embodiment of this application;

[0051] Figure 7 A schematic diagram of the pull-out assembly provided in an embodiment of this application;

[0052] Figure 8 This is a schematic diagram of the needle imaging results provided in an embodiment of this application.

[0053] In the diagram: 1. Mounting base; 1a. Mounting structure; 2. Positioning mechanism; 3. Correction mechanism; 4. Inking mechanism; 41. Quantitative ink dispensing assembly; 411. Ink dispensing base; 4111. Base body; 4112. Fixing base; 4113. Pressure plate; 4114. Stop block; 4115. Guide rod; 412. Injector; 4121. Sleeve; 4121a. Limiting plate; 4122. Piston rod; 4122a. Pressure plate; 4123. Needle; 413. Extrusion drive assembly; 4131. Pressure... Block; 4131a, Placement slot; 4131b, Mounting slot; 4132, Linear module; 4133, Locking plate; 4134, Locking bolt; 42, Ink feed frame; 43, Lifting drive component; 5, Position adjustment mechanism; 51, Pulling assembly; 511, Gripper; 512, Pulling drive component; 513, Pulling frame; 52, Imaging assembly; 521, Imaging component; 522, Fill light component; 523, Focusing drive component; a, Calibration point; A, Ink storage section; A1, Mounting section; A2, Needle body. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] This application provides a current-current printhead adjustment device and an inkjet printing system. The current-current printhead adjustment device automatically applies ink and adjusts the position of the ink reservoir at the ink application station and the position adjustment station, improving the accuracy and efficiency of printhead preparation before use and meeting the preparation needs of large-volume printhead use. This application solves the problem that in related technologies, manual operation for preparing the ink reservoir is inaccurate and inefficient, and cannot meet the preparation needs of large-volume current-current printheads.

[0056] Reference Figure 1 and Figure 2 A current-current printhead adjustment device includes a mounting base 1, a switching mechanism 2, an inking mechanism 4, and a position adjustment mechanism 5. The mounting base 1 is used for mounting the ink reservoir A. The switching mechanism 2 moves the mounting base 1 and the ink reservoir A sequentially to the inking mechanism 4 and the position adjustment mechanism 5. The inking mechanism 4 and the position adjustment mechanism 5 enable automatic inking and position adjustment of the ink reservoir A, accurately and efficiently completing the pre-use preparation work for the printhead, meeting the needs of large-volume printhead use.

[0057] This electro-hydraulic printhead adjustment device enables automatic pre-use preparation of the ink storage unit A, achieving high ink filling accuracy, high position adjustment accuracy, and high efficiency in printhead preparation, thus meeting the needs of preparing printheads for large-scale use.

[0058] Reference Figure 4 The mounting base 1 is provided with a mounting structure 1a, which is used to install the ink storage unit A. The ink storage unit A includes a mounting part A1 and a needle body A2. The mounting part A1 is mounted on the mounting base 1 through the mounting structure 1a, and the top of the needle body A2 is arranged to be open to support the subsequent ink filling mechanism 4 to inject functional liquid into the needle body A2.

[0059] Reference Figure 4 Specifically, the mounting structure 1a includes a mounting hole, which is formed on the mounting base 1 and extends to the top surface of the mounting base 1. When the ink storage part A is installed, the mounting part A1 is inserted into the mounting hole to engage with the mounting base 1, and the positioning surface at the top of the mounting part A1 abuts against the mounting base 1 to achieve height positioning of the mounting part A1.

[0060] With this setup, before adjusting the position of the needle body A2 relative to the mounting part A1, the relative position of the mounting part A1 and the mounting base 1 is determined, i.e., the position of the mounting part A1 is positioned. This makes the subsequent adjustment of the position of the needle body A2 more precise, thus improving the accuracy of the needle body A2 position adjustment.

[0061] It is understandable that the positioning surface of the mounting part A1 is a side or end face of the mounting part A1, which is positioned by abutting against the mounting base 1 to determine the height position of the mounting part A1, thereby determining the position of the mounting part A1.

[0062] In some embodiments, the mounting structure 1a may further include a threaded hole, and the mounting part A1 is threadedly connected to the mounting base 1 via the mounting structure 1a. In some embodiments, the mounting structure 1a may further include a clamping structure or a snap-fit ​​structure to fix the mounting part A1 by clamping.

[0063] Reference Figure 1 In this configuration, the feeding station, ink filling station, and position adjustment station are arranged sequentially along a straight line, meaning the driving direction of the switching mechanism 2 is arranged along a straight line. This facilitates quick and precise switching of the mounting base 1 and the ink storage section A on the mounting base 1 to the designated station. In other embodiments, the feeding station, ink filling station, and position adjustment station may also be arranged sequentially along a curve or a broken line.

[0064] In this embodiment, the driving direction of the shifting mechanism 2 is arranged along the first direction. In this embodiment, the first direction is the left-right direction. For ease of understanding, the first direction is the X-axis direction in the figure.

[0065] Reference Figure 1 and Figure 4 In this embodiment, the shifting mechanism 2 includes a linear motor, a lead screw mechanism, or a belt mechanism. The shifting mechanism 2 is driven to the mounting base 1, which can drive the mounting base 1 to move in the first direction, thereby sending the mounting base 1 and the ink storage part A to the feeding station, the ink filling station, and the position adjustment station.

[0066] Reference Figures 1-3 The ink-filling mechanism 4 is arranged at the ink-filling station and is used to apply ink to the needle body A2. The ink-filling mechanism 4 includes a metering ink dispensing component 41. When the needle body A2 moves to the ink-filling station with the mounting base 1, the needle body A2 is located directly above the metering ink dispensing component 41, and the metering ink dispensing component 41 injects functional liquid into the needle body A2.

[0067] This setup utilizes the quantitative ink dispensing component 41 to automatically infuse ink into the needle body A2, resulting in more precise control of the ink dispensing amount and better consistency of the ink dispensing amount into the needle body A2 each time, thus improving the accuracy and consistency of ink dispensing.

[0068] Reference Figures 1 to 4 Furthermore, preferably, the electro-hydraulic nozzle adjustment device also includes a correction mechanism 3. The correction mechanism 3 is installed on the drive end of the positioning mechanism 2, and the correction mechanism 3 is drivenly connected to the mounting base 1. This allows the correction mechanism 3 to drive the mounting base 1 to move in the correction direction, and the positioning mechanism 2 to drive the mounting base 1 to move in the positioning direction.

[0069] In this embodiment, the direction of movement of the mounting base 1 driven by the correction mechanism 3 is the second direction, which is the front-back direction. For ease of understanding, the second direction is the Y-axis direction in the figure.

[0070] The driving direction of the correction mechanism 3 is set at an angle to the driving direction of the shifting mechanism 2, that is, the first direction and the second direction are set at an angle. In this embodiment, preferably, the driving direction of the correction mechanism 3 is perpendicular to the driving direction of the shifting mechanism 2.

[0071] This configuration utilizes the correction mechanism 3 to move the mounting base 1, thereby changing the position of the mounting base 1 and the ink storage unit A in the second direction. This ensures that the needle body A2 is directly below the quantitative ink dispensing assembly 41, and that the ink dispensing end of the quantitative ink dispensing assembly 41 is aligned with the ink inlet at the top of the needle body A2.

[0072] In some embodiments, the inking mechanism 4 further includes a visual positioning element connected to the quantitative ink dispensing component 41. The visual positioning element positions the needle A2 by imaging it, and the corresponding control mechanism 2 and correction mechanism 3 operate to deliver the needle A2 directly below the ink dispensing end of the quantitative ink dispensing component 41. The visual positioning element includes a camera.

[0073] Reference Figures 2-5 The quantitative ink dispensing assembly 41 includes an ink upper seat 411, a syringe 412, and a pressure drive assembly 413. The sleeve 4121 of the syringe 412 is mounted on the ink upper seat 411, and the drive end of the pressure drive assembly 413 is adapted to press down the piston rod 4122 of the syringe 412.

[0074] With this configuration, the piston rod 4122 of the syringe 412 is squeezed by the squeeze drive assembly 413 to move the piston rod 4122 relative to the sleeve 4121 of the syringe 412, thereby squeezing out the functional liquid in the sleeve 4121 and inking the needle body A2. By controlling the movement distance of the piston rod 4122, the amount of functional liquid injected into the needle body A2 each time can be controlled.

[0075] Reference Figures 2-5 Specifically, the ink holder 411 includes a seat body 4111, a fixed seat 4112, and a pressure plate 4113. The fixed seat 4112 is fixed to the seat body 4111 by bolts. The pressure plate 4113 is slidably mounted on the seat body 4111 and is located above the fixed seat 4112, forming a clamping space between the pressure plate 4113 and the fixed seat 4112.

[0076] Reference Figures 2-5 In this embodiment, the sleeve 4121 includes a limiting plate 4121a, which is integrally formed on the top edge of the sleeve 4121 and protrudes from the circumferential outer side of the sleeve 4121. The limiting plate 4121a is located between the pressure plate 4113 and the fixing seat 4112, and the pressure plate 4113 presses the limiting plate 4121a onto the fixing seat 4112.

[0077] With this configuration, the limiting plate 4121a is supported by the fixed base 4112, and the pressure plate 4113 presses the limiting plate 4121a onto the fixed base 4112, thereby fixing the limiting plate 4121a and conveniently and quickly fixing the sleeve 4121. The pressure plate 4113 uses its own weight to press the sleeve 4121.

[0078] Reference Figures 2-5 Furthermore, the ink holder 411 also includes a stop block 4114, which is fixed to the top surface of the fixing seat 4112 and at the edge of the top surface of the fixing seat 4112. The stop block 4114 is used to support the pressure plate 4113 to prevent the pressure plate 4113 from directly pressing against the fixing seat 4112, thereby leaving a gap between the pressure plate 4113 and the fixing seat 4112 to facilitate separation of the pressure plate 4113 and the fixing seat 4112. In this embodiment, the height of the stop block 4114 is less than the thickness of the limiting plate 4121a.

[0079] In some embodiments, the ink holder 411 further includes a pressing drive component, which is installed on the holder body 4111 and is driven to connect with the pressure plate 4113 to drive the pressure plate 4113 to move up and down. By driving the pressure plate 4113 to descend, the limiting plate 4121a of the sleeve 4121 is pressed to fix the sleeve 4121. By driving the pressure plate 4113 to rise, the pressing state on the limiting plate 4121a is released.

[0080] This configuration, using the pressure plate 4113 and the fixing seat 4112 to install the syringe 412, enables quick installation and removal of the syringe 412, improving the efficiency of installation and removal.

[0081] Reference Figures 2-5 The extrusion drive assembly 413 includes a pressure block 4131 and a linear module 4132. The linear module 4132 drives the pressure block 4131 to press down the piston rod 4122, so that the piston rod 4122 extrudes the functional liquid in the sleeve 4121. The linear module 4132 includes a lead screw mechanism or a linear motor.

[0082] With this setup, by setting the distance at which the pressure block 4131 descends each time, the quantitative control of the functional liquid injected into the needle A2 can be achieved.

[0083] Reference Figures 2-5Specifically, the pressure block 4131 is slidably and vertically mounted on the base 4111, and is located above the fixed base 4112. In this embodiment, the ink base 411 also includes multiple guide rods 4115, all of which are mounted on the base 4111 and are arranged vertically. The pressure block 4131 is sleeved on the guide rods 4115 to guide the pressure block 4131 and improve the lifting accuracy of the pressure block 4131. In addition, the pressure plate 4113 is also sleeved on the guide rods 4115 to limit and guide the pressure plate 4113.

[0084] Reference Figures 2-5 The pressure block 4131 has a placement groove 4131a on its side and an installation groove 4131b on its bottom surface. The installation groove 4131b and the placement groove 4131a are connected, and the end of the installation groove 4131b is open.

[0085] Reference Figures 2-5 In this embodiment, a pressure plate 4122a is integrally formed on the top of the piston rod 4122. The pressure plate 4122a extends into the placement groove 4131a, and the piston rod 4122 extends to the bottom of the pressure block 4131 through the mounting groove 4131b.

[0086] With this configuration, the pressure plate 4122a of the piston rod 4122 extends into the placement groove 4131a of the pressure block 4131, while the limiting plate 4121a of the sleeve 4121 is located between the pressure plate 4113 and the fixed seat 4112. Therefore, after the syringe 412 is installed on the ink filling seat 411, the installation of the syringe 412 is more stable, and the sleeve 4121 and the piston rod 4122 are less likely to shake. This ensures that when the piston rod 4122 is pushed, the piston rod 4122 moves only relative to the sleeve 4121 to squeeze out the functional liquid, thus improving the accuracy of ink filling.

[0087] Reference Figures 2-5 Furthermore, the extrusion drive assembly 413 also includes a locking bolt 4134, which extends from the top of the pressure block 4131 into the placement groove 4131a and is threadedly connected to the pressure block 4131. The locking bolt 4134 abuts against the pressure plate 4122a of the piston rod 4122 to fix the piston rod 4122 onto the pressure block 4131, thereby further improving the consistency of movement between the pressure block 4131 and the piston rod 4122 and ensuring that as the pressure block 4131 descends, the piston rod 4122 pushes out a specified amount of functional fluid.

[0088] Reference Figures 2-5Preferably, the compression drive assembly 413 further includes a locking plate 4133, which is located within the placement groove 4131a. The locking plate 4133 is used to press the pressure plate 4122a on top of the piston rod 4122. The locking plate 4122a is pressed against the locking plate 4133 by a locking bolt 4134. This prevents the pressure plate 4122a from being deformed due to concentrated force at a single point, and avoids damage to the piston rod 4122.

[0089] Reference Figure 1 , Figure 2 and Figure 5 The ink supply mechanism 4 further includes an ink supply frame 42 and a lifting drive component 43. The ink supply base 411 is slidably mounted on the ink supply frame 42 via a track; the lifting drive component 43 is installed on the ink supply frame 42 and is drivenly connected to the ink supply base 411 to drive the ink supply base 411 to move up and down. In this embodiment, the lifting drive component 43 includes a linear motor, a cylinder, or a lead screw mechanism.

[0090] Reference Figure 5 When the needle body A2 is located directly below the ink outlet of the syringe 412, the ink seat 411 descends to drive the needle 4123 of the syringe 412 into the needle body A2.

[0091] This configuration, by lowering the syringe 412 needle body A2 to insert the syringe 412 needle tip 4123 into the needle body A2 before injecting ink into the needle body A2, avoids the waste of functional liquid due to overflow, which would affect the actual amount of functional liquid injected into the needle body A2, thus improving ink injection accuracy and reliability.

[0092] Reference Figure 1 and Figure 6 The position adjustment mechanism 5 is located at the position adjustment station and includes a pull-out assembly 51 and an imaging assembly 52. ​​The pull-out assembly 51 is used to clamp the needle body A2 and drive the needle body A2 to move relative to the mounting part A1 of the ink storage part A. It should be noted that in this embodiment, after the needle body A2 is inserted into the mounting part A1, the frictional force between the needle body A2 and the mounting part A1 is less than the frictional force between the mounting part A1 and the mounting base 1 after it is inserted into the mounting base 1. While the pull-out assembly 51 drives the needle body A2 to move relative to the mounting part A1, it does not drive the mounting part A1 to move relative to the mounting base 1.

[0093] Reference Figures 6-8 The imaging component 52 is used to image the needle body A2 and determine the position of the needle body A2 based on the imaging results.

[0094] Reference Figures 6-8 Specifically, the imaging field of view of the imaging component 52 includes a calibration point a, and the tip of the needle body A2 is adapted to move to the calibration point a.

[0095] With this setup, after ink filling is complete, the ink reservoir A moves to the position adjustment station. The imaging component 52 images the position of the needle body A2. Firstly, it determines the height of the needle tip of needle body A2 and, in conjunction with the pulling component 51, moves needle body A2 relative to the mounting part A1 to adjust its position. Using the calibration point a within the imaging field of view as a reference, it ensures that the distance from the needle tip of needle body A2 to the mounting part A1 is the required distance. This ensures that after the batch ink reservoirs A are adjusted, the relative positions of needle body A2 and mounting part A1 are consistent, improving the consistency of ink reservoirs A and enhancing the printing quality of subsequent printheads. Secondly, by imaging needle body A2, the imaging component 52 can determine the state of the functional liquid inside needle body A2, especially inside the needle tip, and identify the presence of air bubbles, thus removing ink reservoirs A that do not meet the requirements.

[0096] Reference Figures 6-8 The drawing assembly 51 includes a gripper 511, a drawing drive 512, and a drawing frame 513. The drawing drive 512 is mounted on the drawing frame 513. The gripper 511 is used to hold the needle body A2. The drawing drive 512 is driven by the gripper 511 to drive the gripper 511 to move up and down. The drawing drive 512 includes a lead screw mechanism or a linear motor. The gripper 511 includes a pneumatic gripper 511.

[0097] With this configuration, after the needle body A2 moves to the position adjustment mechanism 5 along with the mounting base 1, the needle body A2 is located at the clamping position of the gripper 511. The gripper 511 clamps the needle body A2, and the pull drive 512 drives the gripper 511 to rise and fall, thereby driving the needle body A2 to rise and fall relative to the mounting base 1, so as to adjust the position of the needle body A2 relative to the mounting base 1.

[0098] Furthermore, the correction mechanism 3 adjusts the position of the mounting base 1 so that the needle body A2 is located in the middle of the two clamping ends of the gripper 511, so as to avoid the needle body A2 tilting or even being damaged relative to the mounting part A1 when clamping the needle body A2.

[0099] Reference Figures 6-8 The imaging component 52 includes an imaging element 521 and a supplementary lighting element 522. The imaging element 521 is used to image the needle body A2, and the imaging direction is set at an angle to the driving direction of the switching mechanism 2. The supplementary lighting element 522 is used to provide supplementary lighting to the needle body A2. The needle body A2 is located between the supplementary lighting element 522 and the imaging element 521. In this embodiment, the imaging element 521 includes a camera, and the supplementary lighting element 522 includes an LED light.

[0100] This configuration, through supplemental lighting, makes the imaging result of the imaging element 521 clearer, ensuring clear imaging of the needle tip position of the needle body A2, and accurately imaging the state of the functional fluid inside the needle body A2. Furthermore, the arrangement of the imaging element 521 and the supplemental lighting element 522 does not interfere with the movement path of the mounting base 1.

[0101] Reference Figures 6-8 Furthermore, the imaging assembly 52 also includes a focusing drive 523, which is drivenly connected to the imaging assembly 521 to change the distance between the imaging assembly 521 and the needle body A2, ensuring that the needle body A2 is within the focal plane of the imaging assembly 521 and guaranteeing clear imaging. The focusing drive 523 includes a linear motor or a lead screw mechanism.

[0102] This application provides an embodiment of an electro-hydraulic printhead debugging device. After the ink storage unit A is loaded at the feeding station, the switching mechanism 2 drives the ink storage unit A to sequentially fill ink at the ink filling station and adjust the position of the needle body A2 at the position adjustment station, thus completing the preparation work of the ink storage unit A of the printhead. Therefore, the debugging and preparation operation of the ink storage unit A has a reasonable cycle time and high efficiency, which is suitable for the preparation needs before the use of a large number of printheads.

[0103] At the ink filling station, the quantitative ink dispensing component 41 fills the needle body A2 with functional liquid according to the set functional liquid volume to ensure the consistency of ink filling for each needle body A2, which is not affected by human experience and operation, thus improving ink filling accuracy and efficiency.

[0104] After inking is completed, the ink reservoir A moves to the position adjustment station. The imaging component 52 images the position of the needle body A2. Firstly, it determines the height of the needle tip of the needle body A2 and, in conjunction with the pulling component 51, moves the needle body A2 relative to the mounting part A1 to adjust its position. Using the calibration point a within the imaging field of view as a reference, it ensures that the distance from the needle tip of the needle body A2 to the mounting part A1 is the required distance. This ensures that after the batch ink reservoirs A are adjusted, the relative positions of the needle body A2 and the mounting part A1 are consistent, improving the consistency of the ink reservoirs A and enhancing the printing quality of subsequent printheads. Secondly, by imaging the needle body A2, the imaging component 52 can determine the state of the functional liquid inside the needle body A2, especially inside the needle tip, and identify the presence of air bubbles, thus removing ink reservoirs A that do not meet the requirements.

[0105] Therefore, this electro-hydraulic printhead adjustment device enables automatic pre-use preparation of the ink storage unit A, achieving high ink filling accuracy, high position adjustment accuracy, and high printhead preparation efficiency, thus meeting the preparation needs before the use of a large number of printheads.

[0106] Secondly, an inkjet printing system is provided, including the electro-hydraulic printhead adjustment device as described above.

[0107] Another embodiment of this application provides an inkjet printing system. Since it includes the above-mentioned electro-hydraulic printhead adjustment device, the beneficial effects of the inkjet printing system are the same as those of the above-mentioned electro-hydraulic printhead adjustment device, and will not be repeated here.

[0108] In the description of this application, it should be understood that in the accompanying drawings, the positive direction of "X" represents the right, and correspondingly, the negative direction of "X" represents the left; the positive direction of "Y" represents the front, and correspondingly, the negative direction of "Y" represents the rear; the terms "X", "Y", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0109] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0110] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0111] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A current-current nozzle adjustment device, characterized in that, It includes: Mounting base, the mounting base is used for mounting the ink storage unit, and the top of the needle of the ink storage unit is arranged in an open manner; A shifting mechanism is connected to the mounting base to drive the mounting base to pass sequentially through the feeding station, the ink filling station and the position adjustment station; The ink-filling mechanism is located at the ink-filling station and includes a metering ink dispensing component. The needle body is adapted to move with the mounting base to directly below the metering ink dispensing component, which is used to inject functional liquid into the needle body. The metering ink dispensing component includes an ink-filling base, a syringe, and a squeezing drive component. The sleeve of the syringe is installed on the ink-filling base. The driving end of the squeezing drive component is adapted to press down the piston rod of the syringe. The ink-filling mechanism also includes an ink-filling frame and a lifting drive component. The ink-filling base is slidably and vertically mounted on the ink-filling frame. The lifting drive component is mounted on the ink-filling frame and is drivenly connected to the ink-filling base to drive the ink-filling base to move vertically. The ink-filling base descends to insert the needle of the syringe into the needle body. A position adjustment mechanism is located at a position adjustment station. The position adjustment mechanism includes a pulling component and an imaging component. The pulling component is used to clamp the needle body and drive the needle body to move relative to the mounting part of the ink storage part. The imaging component is used to image the needle body. The imaging field of view of the imaging component includes a calibration point. The needle tip of the needle body is adapted to move to the calibration point.

2. The electro-hydraulic nozzle adjustment device according to claim 1, characterized in that, It also includes a correction mechanism, which is installed on the drive end of the switching mechanism and is drivenly connected to the mounting base. The driving direction of the correction mechanism is set at an angle to the driving direction of the switching mechanism. The correction mechanism drives the mounting base to move, ensuring that the needle is directly below the quantitative ink dispensing component.

3. The electro-hydraulic nozzle adjustment device according to claim 1, characterized in that, The ink holder includes: seat body; The fixing seat is fixed to the base body; A pressure plate is slidably mounted on the base and positioned above the fixed base, forming a clamping space between the pressure plate and the fixed base; the sleeve includes a limiting plate, which is located between the pressure plate and the fixed base, and the pressure plate presses the limiting plate onto the fixed base.

4. The electro-hydraulic nozzle adjustment device according to claim 3, characterized in that, The extrusion drive assembly includes: A pressure block is slidably and vertically disposed on the base body and located above the fixed base; a placement groove is provided on the side of the pressure block and an installation groove is provided on the bottom surface of the pressure block; a pressure plate is provided on the top of the piston rod, the pressure plate extends into the placement groove, and the piston rod extends to the bottom of the pressure block through the installation groove; A linear module is connected to the pressure block drive to drive the pressure block to move up and down.

5. The electro-hydraulic nozzle adjustment device according to claim 1 or 2, characterized in that, The mounting base is provided with a mounting structure for fixing the ink storage part; the mounting structure includes a mounting hole, and the mounting part is inserted into the mounting hole to form a plug-in fit with the mounting base.

6. The electro-hydraulic nozzle adjustment device according to claim 1 or 2, characterized in that, The pull-out assembly includes: The gripper is used to hold the needle body; A pulling drive component is connected to the gripper drive to drive the gripper to move up and down.

7. The electro-hydraulic nozzle adjustment device according to claim 1 or 2, characterized in that, The imaging component includes: An imaging element is used to image the needle body, and the imaging direction is set at an angle to the driving direction of the switching mechanism. A supplementary lighting component, which is used to provide supplementary lighting to the needle body.

8. An inkjet printing system, characterized in that, Includes the electro-hydraulic nozzle adjustment device as described in any one of claims 1 to 7.

Images