Direct-writing printing array needle wiping device

Abstract

The utility model provides a direct writing printing array needle wiping device which comprises a wiping assembly and a driving assembly, the wiping assembly comprises a liquid box used for containing cleaning liquid, a rolling brush arranged in the liquid box and a liquid level measuring mechanism arranged on the inner side wall of the liquid box, and the driving assembly is used for driving the rolling brush to rotate forwards and backwards; the liquid level measuring mechanism is used for measuring the liquid level of the cleaning liquid in the liquid box in real time and sending out an alarm signal when the cleaning liquid is used up. The rotary rolling brush stained with the cleaning agent can automatically clean the direct-writing printing array needle head, and bristles of the rolling brush are soft and not prone to damage a spray head. During cleaning, the direct-writing printing array needle head extends into the liquid box containing the cleaning liquid until the direct-writing printing array needle head makes contact with bristles of the rolling brush, the driving assembly drives the rolling brush to rotate forwards and backwards to achieve cleaning of the direct-writing printing array needle head, and cleaning of residual high-viscosity ink difficult to clean of the direct-writing printing array needle head can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of direct-write printing technology, and in particular to a direct-write printing array needle wiping device. Background Technology

[0002] With the continuous development of science and technology, direct-write printing technology is a high-precision ink-based additive manufacturing technology applied to high-precision, micro-scale applications such as semiconductor packaging and display panel manufacturing. Typically, during the printing process, some printing material adheres to the nozzle tip after a certain period of printing. This necessitates wiping the nozzle to ensure that the deposits do not affect print quality. The usual practice is to manually or with a camera check the nozzle for deposits at regular intervals, and then manually wipe them away. However, manual wiping is unsuitable for automated production lines. It's impossible to dedicate a separate station to this task. Furthermore, manual wiping is inconsistent and increases overall process time, leading to poor product consistency and reduced production efficiency.

[0003] A Chinese patent document, CN220808536 U, discloses a "Roller Brush Type Printhead Cleaning Device." This device includes a roller brush, a drive mechanism for rotating the roller brush forward and backward, and a roller brush assembly / disassembly mechanism. A cleaning tank for holding cleaning fluid is located below the roller brush, and the roller brush is installed in the cleaning tank via the assembly / disassembly mechanism. This invention automates the cleaning of printheads using a roller brush coated with cleaning fluid, effectively removing residual high-viscosity, difficult-to-clean ink. However, this roller brush type printhead cleaning device cannot directly test the fluid level, and it cannot prompt for manual replenishment when the cleaning fluid is running low, resulting in low cleaning efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a direct-write printing array needle wiping device to solve the problems of the instability of the existing direct-write printing array needle manual wiping method, which increases the working time of the entire process, resulting in poor product consistency and reduced production efficiency.

[0005] To achieve the above-mentioned and other related objectives, this utility model is implemented through the following technical solutions.

[0006] This utility model provides a direct-write printing array needle wiping device, including a wiping assembly and a driving assembly. The wiping assembly includes a liquid tank for holding cleaning fluid, a roller brush disposed in the liquid tank, and a liquid level measuring mechanism disposed on the inner side wall of the liquid tank. The driving assembly is used to drive the roller brush to rotate forward and backward. The liquid level measuring mechanism is used to measure the liquid level of the cleaning fluid in the liquid tank in real time and to issue an alarm signal when the cleaning fluid is used up.

[0007] In the above-described technical solution of this application, the direct-write printing array nozzles can be automatically cleaned by rotating a roller brush dipped in cleaning agent. The brush bristles are soft and do not easily damage the printhead. During cleaning, the direct-write printing array nozzle is inserted into the liquid tank containing cleaning solution until it comes into contact with the brush bristles. The drive assembly drives the roller brush to rotate forward and backward to clean the direct-write printing array nozzles. This method can effectively clean high-viscosity and difficult-to-clean ink residues on the direct-write printing array nozzles. The liquid level measuring mechanism can measure the liquid level in the liquid tank in real time and issue an alarm signal when the cleaning solution is depleted, reminding the user to replenish the liquid in time, ensuring a continuous wiping process and improving production efficiency.

[0008] Preferably, the drive assembly includes a base and a drive motor and a synchronous wheel transmission mechanism mounted on the base. The liquid box is mounted on the base. The roller brush includes a roller and bristles on the outer surface of the roller. The roller is connected to the synchronous wheel transmission mechanism. The drive motor is used to drive the synchronous wheel transmission mechanism to rotate the roller forward and backward.

[0009] Preferably, the synchronous pulley transmission mechanism includes a driving pulley, a driven pulley, and a synchronous belt wound around the driving pulley and the driven pulley. The roller is provided with a male and female drive head that mesh with each other at one end near the synchronous pulley transmission mechanism, and a handle locking member at the other end. One end of the roller passes through the liquid box and is connected to the driving pulley through the female drive head, and the other end passes through the liquid box and is fixed by the handle locking member. The drive motor is used to drive the driving pulley to rotate forward and backward.

[0010] The synchronous pulley transmission mechanism, combined with the male and female transmission heads, makes the power transmission more stable and prevents strong vibrations. This avoids the phenomenon of liquid tank tipping and spillage of cleaning fluid during the automated wiping process of the direct-write printing array needles, which could contaminate the equipment.

[0011] Preferably, a limiting mechanism is provided between the base and the liquid tank. The limiting mechanism includes a liquid tank mounting groove on the base, a plug-in pin on the bottom of the mounting groove, a positioning pin on the side of the mounting groove, a plug-in hole on the bottom of the liquid tank, and a positioning hole on the outer wall of the liquid tank. The plug-in pin is adapted to the plug-in hole, and the positioning pin is adapted to the positioning hole. In the above technical solution of this application, by providing a limiting mechanism between the base and the liquid tank, on the one hand, the device can be quickly installed and disassembled; on the other hand, it can ensure that the base and the liquid tank remain relatively stable during the automated wiping process driven by the drive motor to the direct-write printing array needles, preventing the liquid tank from tipping over and causing cleaning fluid to spill and contaminate the equipment.

[0012] Preferably, the liquid level measuring mechanism includes a liquid level measuring cavity disposed on the inner side wall of the liquid box, a float disposed in the liquid level measuring cavity, and a proximity sensor. The liquid level measuring cavity is connected to the liquid box. The float can rise or fall with the liquid level of the cleaning liquid in the liquid box. When the cleaning liquid is used up, the proximity sensor is triggered to issue an alarm signal.

[0013] The float, propelled by its own buoyancy, rises and falls with the liquid level. When the cleaning fluid is nearly depleted, causing the float to drop to a certain position, it triggers a proximity sensor to send an alarm signal, prompting manual replenishment of cleaning fluid. The proximity sensor's vertical position is adjustable, allowing for the setting of the warning liquid level according to specific needs.

[0014] Preferably, a roller brush cleaning plate is provided inside the liquid tank near the roller brush. The roller brush cleaning plate is used to contact the roller brush when it rotates clockwise and counterclockwise to remove dirt from the surface of the roller brush. The roller brush cleaning plate can also agitate the bristles while the roller brush is rotating, using the elasticity of the bristles to shake off the dirt adhering to the bristles, thus achieving self-cleaning of the roller brush.

[0015] Preferably, the liquid tank includes a liquid trough with an open structure and a sealed top cover, the sealed top cover having a needle insertion hole for receiving the array of needles to be cleaned, and the roller brush being disposed near the needle insertion hole.

[0016] Preferably, the bottom of the sealing top cover is provided with a liquid baffle plate, which is located on both sides of the needle insertion hole. The angle between the liquid baffle plate and the sealing top cover is adjustable to control the amount of cleaning fluid carried by the roller brush.

[0017] During the automated wiping process of the direct-write printing array needles, due to the high rotation speed of the roller brush, the cleaning fluid adhering to the brush bristles will be thrown out from the needle insertion hole under the strong centrifugal force, contaminating the equipment. In order to avoid the above phenomenon, this application sets baffles on both sides of the needle insertion hole, and makes the angle between the baffles and the sealing top cover adjustable. On the one hand, it can control the amount of cleaning fluid carried by the roller brush and scrape off the excess cleaning fluid, and on the other hand, it can prevent the cleaning fluid adhering to the brush bristles from being thrown out from the needle insertion hole.

[0018] Preferably, the liquid container further includes a rotating assembly for controlling the opening and closing of the sealing top cover and a latch assembly for fastening the sealing top cover. The latch assembly includes a first latch member disposed on the sealing top cover and a second latch member disposed at the opening of the liquid container. The first latch member has a locking hook, and the second latch member has a latch for locking the locking hook.

[0019] The cleaning fluid contains volatile substances. A rotating component is used to control the rapid opening and closing of the sealing top cover. A latch component is used to ensure that the sealing top cover does not spring open due to vibration during the automated wiping process of the direct-write printing array needles, thereby improving the operational stability of the device.

[0020] Preferably, the side wall of the liquid box is provided with an observation window.

[0021] Preferably, seals are provided between the transmission male head and the liquid tank, between the handle locking member and the liquid tank, and between the sealing top cover and the liquid tank to ensure that the cleaning fluid does not leak.

[0022] As described above, the direct-write printing array needle wiping device of this invention has the following beneficial effects:

[0023] (1) The direct-write printing array needles can be automatically cleaned by rotating a roller brush dipped in cleaning agent. The brush bristles are soft and do not easily damage the printhead. During cleaning, the direct-write printing array needles are inserted into the liquid tank containing cleaning solution until they come into contact with the brush bristles. The drive component drives the roller brush to rotate forward and backward to clean the direct-write printing array needles. This can clean the high-viscosity and difficult-to-clean ink residue on the direct-write printing array needles. The liquid level measuring mechanism can measure the liquid level in the liquid tank in real time and issue an alarm signal when the cleaning solution is used up to remind timely replenishment, ensuring a continuous wiping process and improving production efficiency.

[0024] (2) The synchronous pulley transmission mechanism, combined with the transmission male and transmission female heads, can make the power transmission more stable and prevent strong vibrations. This avoids the phenomenon of liquid box tipping and cleaning liquid overflowing and contaminating the equipment during the automatic wiping process of the direct-write printing array needles.

[0025] (3) Set baffles on both sides of the needle insertion hole and make the angle between the baffles and the sealing top cover adjustable. On the one hand, the amount of cleaning liquid carried by the roller brush can be controlled and excess cleaning liquid can be scraped off. On the other hand, the cleaning liquid adhering to the brush bristles will be thrown out from the needle insertion hole.

[0026] (4) Because the liquid box is easy to get dirty and needs to be removed and cleaned frequently, the liquid box and base of this application adopt a quick-release design, which can quickly replace the roller brush and liquid box, improving the convenience and efficiency of cleaning; in addition, the liquid box of this application does not contain electrical components, so there is no risk of damaging the components during cleaning, making it safer. Attached Figure Description

[0027] Figure 1 The diagram shows the structure of a direct-write printing array needle wiping device.

[0028] Figure 2 The diagram shows the structure of the driving component.

[0029] Figure 3 The diagram shows the structure of the wiping assembly.

[0030] Figure 4 Displayed as Figure 3 Rear view.

[0031] Figure 5 The diagram shown is a cross-sectional view of the wiping assembly.

[0032] Reference numerals: Liquid box 1, Liquid tank 11, Insertion hole 111, Positioning hole 112, Observation window 113, Seal 114, Sealing top cover 12, Needle insertion hole 121, Liquid baffle 122, Roller brush cleaning plate 13, Rotating assembly 14, First latch component 15, Lock hook 151, Second latch component 16, Lock 161, Roller brush 2, Roller 21, Drive male head 211, Drive female head 212, Handle locking component 213, Bearing 214, Brush bristles 22, Base 3, Liquid box mounting slot 31, Insertion pin 311, Positioning pin 312, Drive motor 4, Drive wheel 41, Driven wheel 42, Synchronous belt 43, Liquid level measuring chamber 5, Float ball 51, Proximity sensor 52, Liquid level measuring chamber cover plate 53. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0034] Please see Figures 1 to 5It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0035] like Figure 1 As shown, this utility model provides a direct-write printing array needle wiping device, including a wiping assembly and a driving assembly. The wiping assembly includes a liquid tank 1 for holding cleaning fluid, a roller brush 2 disposed inside the liquid tank, and a liquid level measuring mechanism disposed on the inner side wall of the liquid tank. The driving assembly is used to drive the roller brush to rotate forward and backward. The liquid level measuring mechanism is used to measure the liquid level of the cleaning fluid in the liquid tank in real time and issue an alarm signal when the cleaning fluid is used up. The driving assembly includes a base 3 and a drive motor 4 and a synchronous pulley transmission mechanism disposed on the base. The synchronous pulley transmission mechanism includes a driving pulley 41, a driven pulley 42, and a synchronous belt 43 wound around the driving pulley and the driven pulley. The liquid tank is mounted on the base. The roller brush includes a roller shaft 21 and bristles 22 disposed on the outer surface of the roller shaft. The roller shaft is connected to the synchronous pulley transmission mechanism. The drive motor is used to drive the synchronous pulley transmission mechanism to drive the roller shaft to rotate forward and backward.

[0036] like Figure 2 and Figure 5 As shown, the roller has a male drive head 211 and a female drive head 212 meshing with each other at one end near the synchronous pulley transmission mechanism, and the other end has a... Figure 3 The handle locking component 213 shown has a sealing component between it and the liquid tank. One end of the roller passes through the liquid box and is connected to the drive wheel via a transmission female head. The other end passes through the liquid box and is fixed by the handle locking component. The drive motor is used to drive the drive wheel to rotate forward and backward.

[0037] like Figure 2 , Figure 3 and Figure 5As shown, a limiting mechanism is provided between the base and the liquid box. The limiting mechanism includes a liquid box mounting groove 31 on the base, a plug-in pin 311 on the bottom surface of the liquid box mounting groove, a positioning pin 312 on the side surface of the liquid box mounting groove, a plug-in hole 111 on the bottom of the liquid box, and a positioning hole 112 on the outer side wall of the liquid box. The plug-in pin is adapted to the plug-in hole, and the positioning pin is adapted to the positioning hole.

[0038] like Figure 4 As shown, the liquid level measuring mechanism includes a liquid level measuring cavity 5 disposed on the inner side wall of the liquid box, a float 51 disposed in the liquid level measuring cavity, and a proximity sensor 52. The liquid level measuring cavity is connected to the liquid box, and a transparent liquid level measuring cavity cover 53 is provided outside the liquid level measuring cavity. A sealing element 114, specifically an O-ring, is provided between the liquid level measuring cavity and the liquid level measuring cavity cover. The float can rise or fall with the liquid level of the cleaning liquid in the measuring liquid box, and when the cleaning liquid is used up, the float triggers the proximity sensor to issue an alarm signal.

[0039] like Figure 5 As shown, a roller brush cleaning plate 13 is provided in the liquid box near the roller brush. The roller brush cleaning plate is used to contact the roller brush when the roller brush rotates forward and backward to remove dirt from the surface of the roller brush.

[0040] like Figure 3 and Figure 4 As shown, the liquid tank includes a liquid trough 11 with an open structure, a sealed top cover 12, a rotating assembly 14 for controlling the opening and closing of the sealed top cover, and a latch assembly for fastening the sealed top cover. A sealing element 114 is provided between the sealed top cover and the liquid trough. The sealed top cover has a needle insertion hole 121 for accommodating the array of needles to be cleaned. The roller brush is positioned near the needle insertion hole. A baffle plate 122 is provided at the bottom of the sealed top cover, located on both sides of the needle insertion hole. The angle between the baffle plate and the sealed top cover is adjustable, specifically achieved using an angle adjustment mechanism in the prior art, such as a damping hinge. The baffle plate controls the amount of cleaning liquid carried by the roller brush. The latch assembly includes a first latch member 15 on the sealed top cover and a second latch member 16 at the opening of the liquid tank. An observation window 113 is provided on the side wall of the liquid trough.

[0041] like Figure 5 As shown, the first latching member has a locking hook 151, and the second latching member has a locking buckle 161 for locking the locking hook. The transmission male connector 211 is fitted with a bearing 214, and a seal 114, specifically a shaft seal, is provided between the transmission male connector 211 and the liquid tank 11.

[0042] The working principle of the direct-write printing array needle wiping device of this utility model is as follows:

[0043] Before starting work, add cleaning fluid to the liquid box: pull down the plug pin 311, remove the liquid box 1, open the latch assembly, flip open the sealing top cover 12, inject the cleaning fluid into the liquid tank 11, then close the sealing top cover, lock the latch assembly, install the liquid box on the base 3, and position it by the plug pin and the positioning pin. After positioning, engage the transmission female head 212 and the transmission male head 211.

[0044] When the machine starts working, the drive motor 4 drives the drive wheel 41 to rotate through the synchronous belt 43, which in turn drives the driven wheel 42 to rotate, which in turn drives the transmission female head 212 to rotate. The transmission female head drives the transmission male head 211 and the roller brush 2 to rotate in turn. The direct writing printing array needles descend and pass through the needle insertion hole 121 on the sealed top cover to contact the brush bristles 22. The roller brush, which is soaked in cleaning solution, rotates forward and reverse in turn to wipe the direct writing printing array needles clean.

[0045] In summary, this invention automates the cleaning of direct-write printing array nozzles by rotating a brush dipped in cleaning agent. The brush bristles are soft and unlikely to damage the printhead. During cleaning, the direct-write printing array nozzle is inserted into the cleaning solution tank until it contacts the brush bristles. A drive assembly then rotates the brush in both directions to clean the nozzle, effectively removing residual high-viscosity and difficult-to-clean ink. A liquid level measuring mechanism measures the cleaning solution level in the tank in real time and issues an alarm when the solution is depleted, reminding the user to replenish the solution promptly. This ensures a continuous wiping process and improves production efficiency. Because the liquid tank is prone to getting dirty and requires frequent disassembly for cleaning, this invention features a quick-release design for the liquid tank and base, allowing for rapid replacement of the brush and tank, improving cleaning convenience and efficiency. Furthermore, the liquid tank does not contain electrical components, eliminating the risk of damage to components during cleaning and enhancing safety. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial applicability.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A direct-write printing array needle wiping device, characterized in that, The device includes a wiping assembly and a driving assembly. The wiping assembly includes a liquid tank (1) for holding cleaning fluid, a roller brush (2) disposed in the liquid tank, and a liquid level measuring mechanism disposed on the inner side wall of the liquid tank. The driving assembly is used to drive the roller brush to rotate forward and backward. The liquid level measuring mechanism is used to measure the liquid level of the cleaning fluid in the liquid tank in real time and to issue an alarm signal when the cleaning fluid is used up. The drive assembly includes a base (3) and a drive motor (4) and a synchronous wheel transmission mechanism mounted on the base, and the liquid box is mounted on the base; A limiting mechanism is provided between the base and the liquid box. The limiting mechanism includes a liquid box mounting groove (31) on the base, a plug-in pin (311) on the bottom surface of the liquid box mounting groove, a positioning pin (312) on the side of the liquid box mounting groove, a plug-in hole (111) on the bottom of the liquid box, and a positioning hole (112) on the outer side wall of the liquid box. The plug-in pin is adapted to the plug-in hole, and the positioning pin is adapted to the positioning hole. The liquid level measuring mechanism includes a liquid level measuring cavity (5) located on the inner wall of the liquid box, a float (51) located in the liquid level measuring cavity, and a proximity sensor (52) located on the base. The liquid level measuring cavity is connected to the liquid box. The float can rise or fall with the liquid level of the cleaning liquid in the liquid box. When the cleaning liquid is used up, the proximity sensor is triggered to issue an alarm signal.

2. The direct-write printing array needle wiping device according to claim 1, characterized in that: The roller brush includes a roller (21) and bristles (22) on the outer surface of the roller. The roller is connected to a synchronous wheel transmission mechanism. The drive motor is used to drive the synchronous wheel transmission mechanism to rotate the roller forward and backward.

3. The direct-write printing array needle wiping device according to claim 2, characterized in that: The synchronous pulley transmission mechanism includes a driving pulley (41), a driven pulley (42), and a synchronous belt (43) wrapped around the driving pulley and the driven pulley. The roller is provided with a male transmission head (211) and a female transmission head (212) that mesh with each other at one end of the synchronous pulley transmission mechanism, and a handle locking member (213) at the other end. One end of the roller passes through the liquid box and is connected to the driving pulley through the female transmission head, and the other end passes through the liquid box and is fixed by the handle locking member. The drive motor is used to drive the driving pulley to rotate forward and backward.

4. The direct-write printing array needle wiping device according to claim 1, characterized in that: The liquid box is provided with a roller brush cleaning plate (13) near the roller brush. The roller brush cleaning plate is used to contact the roller brush when the roller brush rotates forward and backward to remove dirt from the surface of the roller brush.

5. The direct-write printing array needle wiping device according to claim 3, characterized in that: The liquid box includes a liquid tank (11) with an open structure and a sealed top cover (12). The sealed top cover is provided with a needle insertion hole (121) for receiving the array needles to be cleaned. The roller brush is positioned close to the needle insertion hole.

6. The direct-write printing array needle wiping device according to claim 5, characterized in that: The bottom of the sealing top cover is provided with a liquid baffle (122), which is located on both sides of the needle insertion hole. The angle between the liquid baffle and the sealing top cover is adjustable to control the amount of cleaning liquid carried by the roller brush.

7. The direct-write printing array needle wiping device according to claim 5, characterized in that: The liquid tank also includes a rotating assembly (14) for controlling the opening and closing of the sealing top cover and a latch assembly for fastening the sealing top cover. The latch assembly includes a first latch member (15) disposed on the sealing top cover and a second latch member (16) disposed at the opening of the liquid tank. The first latch member has a locking hook (151) and the second latch member has a latch (161) for locking the locking hook.

8. The direct-write printing array needle wiping device according to claim 5, characterized in that: The side wall of the liquid tank is provided with an observation window (113); a sealing element (114) is provided between the transmission male head and the liquid tank, between the handle locking element and the liquid tank, and between the sealing top cover and the liquid tank.

Images