A high resolution microstructure printhead that prevents clogging of the conduits

Abstract

The utility model discloses a kind of high-resolution microstructure printing head of anti-pipeline blockage, belong to printing head technical field, including printing head body, the end cap is installed in printing head body top, the filter plate is equipped in printing head body inside, filter hole is opened in the filter plate inside, printing head body bottom is equipped with a face nozzle, printing head body inside is slidably connected with a row of slide strips, a row of the slide strips top are equipped with a row of convex posts, rotating rod is rotatably connected in printing head body middle lower part, rotating rod outer surface is equipped with a row of eccentric discs, by rotating rotating rod, it drives eccentric disc to rotate, to drive slide strip and convex post to lift, reach the effect of cleaning impurity inside filter hole, can make filter hole restore original aperture and flow capacity, ink can be evenly, stably pass through filter hole, avoid the condition of ink supply pressure sharp rise or ink supply interruption due to local blockage, ensure that downstream nozzle ink output is consistent.

Description

Technical Field

[0001] This utility model relates to the field of printhead technology, specifically a high-resolution microstructure printhead that prevents pipeline blockage. Background Technology

[0002] The printhead is the core component of a printer or various printing equipment. Its core function is to accurately transfer printing materials such as ink onto the substrate based on digital signals, directly determining the clarity, speed, and stability of the print. In existing technologies, during use, impurities in the ink may clog the ink outlet pores of the printhead, affecting printing efficiency. This usually requires manual disassembly and cleaning, which is very inconvenient. However, a printing press anti-clogging printhead with the publication number CN222329310U allows ink to enter through the ink inlet. After the ink is filtered by the filter plate, it is ejected from the printing pores of the front cover to achieve printing. When cleaning and maintenance are required, the first solenoid valve is closed, and the second, third, and fourth solenoid valves are opened. The air pump blows high-pressure gas into the printhead housing. The high-pressure gas blows impurities from the filter plate out of the slag discharge port and blows out the blockages in the printing pores of the front cover, making maintenance very convenient.

[0003] While the aforementioned technology can blow impurities off the filter plate from the slag discharge port, it has the problem of not being able to clean the filter pores inside the filter plate. The filter pores become clogged by tiny particles or residues, and the unclogged filter pores have to bear more ink flow, which leads to uneven flow distribution between the filter pores. As impurities continue to accumulate, the unclogged filter pores are gradually filled, and eventually the overall permeability of the filter plate decreases significantly, or even forms a completely clogged dead zone. Utility Model Content

[0004] The purpose of this invention is to provide a high-resolution microstructure printhead that prevents pipe blockage, thereby solving the problem mentioned in the background art that current printheads on the market cannot clean the filter pores inside the filter plate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-resolution microstructure printhead for preventing pipeline blockage, comprising a printhead body, an end cap installed on the top of the printhead body, a filter plate inside the printhead body with filter holes inside the filter plate, a nozzle at the bottom of the printhead body, a row of slide bars slidably connected inside the printhead body, each of the slide bars having a row of protruding posts at its top, a rotating rod rotatably connected to the lower middle part of the printhead body, a row of eccentric discs on the outer surface of the rotating rod, and a cleaning component for cleaning the inside of the printhead body on the side of the printhead body.

[0006] Preferably, the cleaning assembly includes a ventilation duct disposed on one side of the printhead body, with fans installed in the upper and lower parts of the ventilation duct, a baffle inside the ventilation duct, and the lower output end of the fan connected to one end of the rotating rod.

[0007] Preferably, air inlet pipes are provided on the upper middle and lower middle parts of one side of the printing head body, and both air inlet pipes are connected to ventilation ducts. An air outlet pipe is connected to the other side of the printing head body, and a first solenoid valve is installed on the outer surface of both air inlet pipes and air outlet pipes.

[0008] Preferably, the end cap has mounting holes around its perimeter, a feed pipe is connected to the top of the end cap, and a second solenoid valve is provided on the outer surface of the feed pipe.

[0009] Preferably, the nozzles are arranged in a rectangular array, and all nozzles are made of ceramic material.

[0010] Preferably, the filter holes and protrusions are equidistantly distributed, and the positions of the filter holes and protrusions correspond to each other.

[0011] Preferably, the slider and the eccentric disk are on the same horizontal line, and the width of the slider and the width of the eccentric disk are the same.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By using filter plates and filter holes, the ink entering the printhead body is filtered, which can intercept particulate impurities and dried ink residue in the ink, prevent these substances from getting stuck in the nozzle and causing ink interruption, reduce the wear of the nozzle caused by repeated high-pressure cleaning, and extend the effective spraying life of the nozzle.

[0013] By rotating the rotating rod, the eccentric disk is driven to rotate, which in turn drives the slide bar and the convex column to rise and fall, thus cleaning the impurities inside the filter holes. This allows the filter holes to restore their original aperture and flow capacity, and the ink can pass through the filter holes evenly and stably, avoiding sudden increases in ink supply pressure or interruptions caused by local blockages, and ensuring consistent ink output from downstream nozzles.

[0014] The cleaning components effectively clean impurities on the filter plate surface and inside the nozzles, eliminating the need for frequent disassembly of parts and reducing downtime for cleaning. They also prevent long-term accumulation and compaction of impurities that could clog the filter holes, thus avoiding a sudden increase in ink supply pressure caused by filter plate blockage and reducing the risk of filter plate deformation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from below; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the connection structure between the ventilation duct and the baffle of this utility model; Figure 5 This is a schematic diagram of the connection structure between the rotating rod and the eccentric disk of this utility model; Figure 6 This is a schematic diagram of the connection structure between the ventilation duct and the air inlet pipe of this utility model.

[0016] In the diagram: 1. Printing head body; 2. End cap; 3. Filter plate; 4. Filter hole; 5. Nozzle; 6. Sliding strip; 7. Protruding column; 8. Rotating rod; 9. Eccentric disc; 10. Ventilation duct; 11. Fan; 12. Baffle; 13. Air inlet pipe; 14. Air outlet pipe; 15. Feed pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides the following technical solution: a high-resolution microstructure printing head that prevents pipeline blockage. Example 1: To solve the problem that existing printheads cannot clean the filter holes 4 inside the filter plate 3, the following is disclosed: a printhead body 1, with an end cap 2 installed on the top of the printhead body 1 (e.g., Figures 1-6 As shown), the printing head body 1 has a filter plate 3 inside, and filter holes 4 are opened inside the filter plate 3. A nozzle 5 is provided at the bottom of the printing head body 1. A row of slide bars 6 is slidably connected inside the printing head body 1. Each row of slide bars 6 has a row of protruding posts 7 at the top. A rotating rod 8 is rotatably connected to the lower part of the printing head body 1 (as shown). Figures 3-6 As shown), the outer surface of the rotating rod 8 is provided with a row of eccentric discs 9, which are used to drive the slide bar 6 to move up and down. Mounting holes are provided around the end cover 2. The top of the end cover 2 is connected to the feed pipe 15, and a second solenoid valve is provided on the outer surface of the feed pipe 15. The nozzles 5 are arranged in a rectangular array, and all nozzles 5 are made of ceramic material. The filter holes 4 and the protrusions 7 are equidistantly distributed, and the positions of the filter holes 4 and the protrusions 7 correspond to each other (e.g., ...). Figures 3-6 As shown in the figure, slider 6 and eccentric disk 9 are on the same horizontal line, and the width of slider 6 is the same as the width of eccentric disk 9.

[0019] First, connect the printhead body 1 and the end cap 2. Then, install the end cap 2 through the mounting holes. Next, ink enters the printhead body 1 through the feed pipe 15 at the top of the end cap 2 (e.g., ...). Figure 1 , Figures 3-6 As shown), the ink first flows through filter plate 3. The filter holes 4 inside filter plate 3 filter the ink, intercepting particulate impurities, dried residues, etc., to prevent impurities from directly entering the downstream and affecting nozzle 5. The filtered clean ink continues to flow downwards, eventually reaching the bottom nozzle 5 area, preparing for inkjet printing. The first solenoid valve can control the closing of the feed pipe 15. When the filter holes 4 become internally clogged due to long-term use, the rotating rod 8 can be rotated to drive the eccentric disk 9 to rotate synchronously (e.g., Figures 3-6 As shown, since the eccentric disk 9 and the slider 6 are on the same horizontal line and have the same width, when the eccentric disk 9 rotates, it will use its eccentric structure to push the corresponding slider 6 to slide up and down inside the print head body 1. This further drives the protrusion 7 to move up and down synchronously. Since the protrusion 7 and the filter hole 4 are positioned correspondingly, when the protrusion 7 moves up and down, it will enter the corresponding filter hole 4. Then, by squeezing, it will push out the impurities clogging the filter hole 4, achieving deep cleaning of the filter hole 4. The rectangular array of nozzles 5 ensures that the ink forms a regular pixel matrix on the substrate (e.g., ...). Figure 2 As shown in the figure, this avoids pattern breaks and differences in density caused by uneven distribution of nozzles 5, thereby achieving high resolution and uniform printing. The nozzles 5, made of ceramic material, have extremely high wear resistance, which can improve service life.

[0020] Example 2: Unlike Example 1, the cleaning component can clean the surface of the filter plate 3 and the inside of the nozzle 5. It discloses that: a cleaning component for cleaning the inside of the print head body 1 is provided on the side of the print head body 1. The cleaning component includes a ventilation duct 10 located on one side of the print head body 1, and fans 11 are installed in the upper and lower parts of the ventilation duct 10 (e.g., ...). Figure 1 , Figure 4 and Figure 6 As shown), the ventilation duct 10 is equipped with a baffle 12 to separate the space inside the ventilation duct 10. The output end of the fan 11 located below is connected to one end of the rotating rod 8. Air inlet pipes 13 are provided on the upper and lower middle parts of one side of the printing head body 1. Both air inlet pipes 13 are connected to the ventilation duct 10. An air outlet pipe 14 is connected to the other side of the printing head body 1. A first solenoid valve (such as...) is installed on the outer surface of both air inlet pipes 13 and air outlet pipe 14. Figure 3 and Figure 4 As shown), it is used to control the opening and closing of the air inlet pipe 13 and the air outlet pipe 14.

[0021] When the surface of filter plate 3 needs to be cleaned, the first solenoid valve of the upper air inlet pipe 13 opens, and the first solenoid valve of the air outlet pipe 14 opens simultaneously, starting the fan 11 in the upper part of the ventilation duct 10 (e.g., ...). Figure 1 , Figure 4 and Figure 6As shown), the high-pressure airflow generated by the blower 11 enters the interior of the printhead body 1 through the upper middle air inlet pipe 13, flows along the surface of the filter plate 3, blows the impurities accumulated on the surface of the filter plate 3 to the other side, and finally discharges through the air outlet pipe 14, preventing impurities from falling back into the filter holes 4 or ink path. When cleaning the inside of the nozzle 5, the first solenoid valve of the lower middle air inlet pipe 13 can be opened, and then the blower 11 in the lower middle part of the ventilation duct 10 can be started. The airflow generated enters the nozzle 5 area at the bottom of the printhead body 1 through the lower middle air inlet pipe 13 to purge the inside of the nozzle 5 (as shown). Figures 3-6 As shown), the tiny impurities stuck in the nozzle 5 are blown out. At the same time, when the fan 11 in the middle and lower part is started, it will further drive the rotating rod 8 to rotate, thereby driving the eccentric disk 9 to rotate.

[0022] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0023] The contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-resolution microstructure printhead for preventing pipeline blockage, comprising a printhead body (1) and an end cap (2) mounted on the top of the printhead body (1). Its features are: The printing head body (1) is provided with a filter plate (3) inside, and a filter hole (4) is provided inside the filter plate (3). A nozzle (5) is provided at the bottom of the printing head body (1). A row of slide bars (6) is slidably connected inside the printing head body (1). A row of protruding posts (7) is provided at the top of each row of slide bars (6). A rotating rod (8) is rotatably connected to the lower part of the printing head body (1). A row of eccentric discs (9) is provided on the outer surface of the rotating rod (8). A cleaning component for cleaning the inside of the printing head body (1) is provided on the side of the printing head body (1).

2. The high-resolution microstructure printhead for preventing pipeline blockage according to claim 1, characterized in that: The cleaning assembly includes a ventilation duct (10) located on one side of the printhead body (1). A fan (11) is installed in the upper and lower parts of the ventilation duct (10). A baffle (12) is provided inside the ventilation duct (10). The output end of the fan (11) located below is connected to one end of the rotating rod (8).

3. The high-resolution microstructure printhead for preventing pipeline blockage according to claim 2, characterized in that: The upper and lower parts of one side of the printing head body (1) are provided with air inlet pipes (13), and both air inlet pipes (13) are connected to the ventilation pipe (10). The other side of the printing head body (1) is connected to an air outlet pipe (14). The outer surfaces of the two air inlet pipes (13) and the air outlet pipe (14) are each equipped with a first solenoid valve.

4. The high-resolution microstructure printhead for preventing pipeline blockage according to claim 1, characterized in that: The end cap (2) has mounting holes around its perimeter, and the top of the end cap (2) is connected to a feed pipe (15), and a second solenoid valve is provided on the outer surface of the feed pipe (15).

5. A high-resolution microstructure printhead for preventing pipeline blockage according to claim 1, characterized in that: The nozzles (5) are arranged in a rectangular array, and all nozzles (5) are made of ceramic material.

6. A high-resolution microstructure printhead for preventing pipeline blockage according to claim 1, characterized in that: The filter holes (4) and the protrusions (7) are equidistantly distributed, and the positions of the filter holes (4) and the protrusions (7) correspond to each other.

7. A high-resolution microstructure printhead for preventing pipeline blockage according to claim 1, characterized in that: The slider (6) and the eccentric disk (9) are on the same horizontal line, and the width of the slider (6) and the width of the eccentric disk (9) are the same.

Images