A printing device and a printing apparatus

Abstract

The application belongs to the field of printing equipment and relates to a printing device and a printing equipment. The printing device comprises a printing mechanism, which comprises a first shell, a first containing cavity in the first shell, the first containing cavity being used for containing ink, a nozzle provided on the first shell, an ink ejection channel provided in the nozzle, the ink ejection channel being communicated with the first containing cavity and an external environment, a moving assembly provided in the first containing cavity, and the moving assembly comprising a moving piece and a protruding part provided on the moving piece, the protruding part corresponding to the position of the nozzle, and the moving piece being used for moving close to or away from the nozzle so that the protruding part is inserted into or away from the ink ejection channel. The printing mechanism of the embodiment of the application can effectively remove the blockage of the printing nozzle and improve the printing efficiency and quality.

Description

Technical Field

[0001] This application relates to the field of printing equipment technology, and more specifically, to a printing apparatus and printing equipment. Background Technology

[0002] Inkjet printing is an important research direction in the field of display technology. It aims to achieve efficient and low-cost fabrication of various functional layers through inkjet printing technology. Compared with traditional vacuum evaporation technology, inkjet printing technology can significantly reduce material consumption and production costs. Inkjet printing technology is a non-contact patterning technology that can precisely spray ink droplets onto designated positions on the substrate to achieve high-resolution patterning.

[0003] However, ink residue in the nozzles after printing can cause blockages, affecting printing efficiency and quality. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a printing device, which employs the following technical solution:

[0005] The printing device includes: a printing mechanism, the printing mechanism including: a first housing, the first housing having a first receiving cavity for containing ink;

[0006] The printhead is disposed on the first housing, and an inkjet channel is provided inside the printhead, the inkjet channel connecting the first receiving cavity and the external environment;

[0007] A movable component is disposed within the first receiving cavity, and the movable component includes a movable member and a protrusion disposed on the movable member. The protrusion corresponds to the position of the printhead, and the movable member is used to move closer to or further away from the printhead so that the protrusion enters or moves away from the inkjet channel.

[0008] Accordingly, this application also provides a printing device, which includes the aforementioned printing apparatus.

[0009] Compared with the prior art, the embodiments of this application have the following main advantages:

[0010] The printing mechanism of this application embodiment can effectively remove printhead clogging and improve printing efficiency and quality. Attached Figure Description

[0011] To more clearly illustrate the solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the printing apparatus according to an embodiment of this application;

[0013] Figure 2 This is another schematic diagram of the printing apparatus according to an embodiment of this application;

[0014] Figure 3 This is a schematic diagram showing the connection of the first housing, the moving component, and the connecting plate in the printing apparatus of this application embodiment;

[0015] Figure 4 This is an exploded view of the first housing and connecting assembly in the printing apparatus of this application embodiment;

[0016] Figure 5 This is a schematic diagram showing the partial connection relationship between the movable component and the first housing in the printing apparatus of this application embodiment;

[0017] Figure 6 This is an exploded view of the second housing according to an embodiment of this application.

[0018] Figure label:

[0019] 1. First housing; 2. Central axis; 3. Limiting component; 4. Elastic component; 5. Moving component; 6. Protrusion; 7. Second housing; 8. Second liquid inlet pipe; 9. Third liquid inlet pipe; 10. Second drive assembly; 11. Handle; 12. Sealing cover; 13. Top plate; 14. First liquid inlet pipe; 15. Printhead; 16. Inkjet channel; 17. Fixing post; 18. Internal thread; 19. Magnetic suction hole; 20. Through hole; 21. External thread; 201. Connecting hole; 202. Magnetic suction cylinder; 203. Column; 204. Magnetic suction head; 205. Connecting plate; 206. Second connecting part; 207. First magnetic suction component; 208. Detailed Implementation

[0020] 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, and 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. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application.

[0021] In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or operating state, specifically the orientation shown in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. Furthermore, in the description of this application, the term "comprising" means "including but not limited to". The terms first, second, third, etc., are used merely as illustrative purposes and do not impose numerical requirements or establish a numerical order.

[0022] In this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural.

[0023] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one," "at least one of the following," or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, "at least one of a, b, or c," or "at least one of a, b, and c," can both mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple.

[0024] Various embodiments of this application may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of this application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the referred range.

[0025] Printer printheads have inkjet channels for ink ejection, which often become clogged with dried ink or other contaminants, preventing normal ink ejection. Current technology often uses high-pressure gas jets to expel the clogs through an air jet device within the printer, but this method is costly and can easily damage the printhead. Alternatively, existing technology uses a brush to scrape the printhead surface to remove some of the clogs, but this method is ineffective at removing clogs within the inkjet channels, resulting in low cleaning efficiency.

[0026] To solve the above problems, please refer to... Figures 1-5This application provides a printing device, which includes a printing mechanism, and the printing mechanism includes a first housing 1, the first housing 1 having a first receiving cavity for containing ink;

[0027] The printhead 15 is disposed on the first housing 1, and the printhead 15 is provided with an inkjet channel 16, which connects the first receiving cavity and the external environment.

[0028] The movable component is disposed in the first receiving cavity and includes a movable member 5 and a protrusion 6 disposed on the movable member 5. The protrusion 6 corresponds to the position of the printhead 15. The movable member 5 is used to move closer to or further away from the printhead so that the protrusion 6 enters or moves away from the inkjet channel 16.

[0029] In this embodiment, when the printhead 15 is working, it can eject ink from the first receiving cavity through the inkjet channel 16. After being left for a long time, the ink remaining in the inkjet channel 16 of the printhead 15 dries and forms a blockage. At this time, the working process of the printing device is as follows: First, the user can control the moving component to move along the Z direction in the figure and approach the printhead 15, so that the protrusion 6 enters the inkjet channel 16 and contacts the blockage. Then, when the protrusion 6 passes through the inkjet channel 16 to the external environment, the blockage will be pushed out of the inkjet channel 16 by the protrusion 6, thereby achieving the effect of eliminating the blockage in the inkjet channel 16.

[0030] Therefore, the printing device of this embodiment can quickly remove the blockage in the printhead 15, thereby avoiding the printhead 15 from becoming clogged and improving the efficiency of the printhead 15. At the same time, the printing device of this embodiment has a simple structure and does not require the use of high-pressure printheads 15 or other components, thus resulting in low production costs.

[0031] For further details, please refer to... Figures 1-3 and Figure 5 The movable component divides the first receiving cavity into a first sub-receiving cavity and a second sub-receiving cavity, with the nozzle 15 located in the second sub-receiving cavity;

[0032] The printing device includes a first liquid inlet pipe 14, one end of which passes through the side wall of the first housing 1 and connects to the second sub-accommodation cavity.

[0033] In this embodiment, the moving component is provided with a through hole 20, through which a first liquid inlet pipe 14 passes. The first liquid inlet pipe 14 can guide external ink or other liquids into the first receiving cavity, enabling the printhead 15 to perform inkjet printing. The moving component can also serve to separate the first receiving cavity to a certain extent. Since the first liquid inlet pipe 14 connects to the second sub-receiving cavity, when the first liquid inlet pipe 14 delivers ink to the second sub-receiving cavity, it can prevent the ink from contacting other components in the first sub-receiving cavity and causing ink contamination. It can also prevent the ink from drying and corroding the components in the first sub-receiving cavity, thereby improving the inkjet printing quality and the service life of the printing device.

[0034] It should be understood that the inner wall of the first liquid inlet pipe 14 can be provided with an internal thread 18 to complete the threaded connection through the internal thread 18, thereby sealing the connection between itself and the external environment and preventing the ink in the first receiving cavity from being contaminated.

[0035] Further, please refer to Figures 1-3 and Figure 5 The printing device also includes a first driving assembly, which includes a limiting member 3, a connecting post (not marked in the figure), and an elastic member 4. The connecting post passes through the first housing 1 on the side away from the printhead 15, with one end connected to the moving member 5 and the other end provided with the limiting member 3. The elastic member 4 is sleeved on the outside of the connecting post, with one end abutting against the first housing 1 and the other end abutting against the limiting member 3; and / or,

[0036] Both the nozzle 15 and the protrusion 6 are multiple, and the protrusion 6 is arranged in a one-to-one correspondence with the nozzle 15.

[0037] In this embodiment, firstly, the user can press the limiting member 3 of the drive assembly along the Z direction in the figure, so that the connecting rod of the drive assembly pushes the moving assembly toward the printhead 15 to quickly complete the cleaning work of the printhead 15. Secondly, the elastic member 4 is constrained between the limiting member 3 and the first housing 1. When the limiting member 3 moves toward the first housing 1, the elastic member 4 can accumulate elastic potential energy; when the user no longer presses against the limiting member 3, the elastic member 4 will elastically deform to drive the limiting member 3 to automatically reset, thereby improving the user's efficiency in using the printing device. When there are multiple protrusions 6 and printheads 15, and the protrusions 6 are arranged one-to-one with the printheads 15, the user can quickly complete the removal of blockages from multiple printheads 15, thereby improving the efficiency of the printing device.

[0038] It should be understood that when the projected area of ​​the limiting member 3 on the first housing 1 is greater than the projected area of ​​the connecting column on the housing, the user can still reset the moving component by holding the limiting member 3 in the event that the elastic member 4 fails or falls off.

[0039] Further, please refer to Figures 1-2 and Figure 6 The nozzle anti-clogging mechanism also includes a second housing 7 and a second drive assembly 10. The second housing 7 is provided with a second receiving cavity for containing liquid. The first receiving cavity and the second receiving cavity are connected. The second drive assembly 10 is used to control the liquid to enter the first receiving cavity.

[0040] In this embodiment, the second drive component 10 can drive liquid into the first receiving cavity to remove residual ink in the first receiving cavity, thereby preventing residual ink in the first receiving cavity from re-entering the inkjet channel 16 and forming blockages; at the same time, it can also provide lubrication and soften blockages when the protrusion 6 removes the blockages entering the inkjet channel 16, thereby improving the blockage removal efficiency.

[0041] Further, please refer to Figures 1-2 and Figure 6 The printing mechanism further includes a second liquid inlet pipe 8, and the first receiving cavity and the second receiving cavity are connected through the second liquid inlet pipe 8.

[0042] Furthermore, the second drive assembly 10 abuts against the side wall of the second receiving cavity and is used to move closer to or further away from the second inlet pipe 8 to control the liquid to enter the first receiving cavity through the second inlet pipe 8.

[0043] In this embodiment, firstly, the second drive assembly 10 abuts against the side wall of the second receiving cavity, so when it moves toward the second liquid inlet pipe 8, it can effectively prevent liquid from overflowing; at the same time, the second drive assembly 10 itself acts as a limiting device, so that the second receiving cavity is sealed, which can achieve the effect of omitting the sealing device and reducing the manufacturing cost of the printing device; finally, the structure of the second drive assembly 10 in this embodiment is simple, so the production cost is low.

[0044] It should be understood that the second liquid inlet pipe 8 can connect to the second sub-receiving cavity, thus effectively preventing liquid from contacting the device in the first sub-receiving cavity, thereby preventing liquid from corroding the device and improving the service life of the printing device.

[0045] It should be understood that the second housing 7 can also be configured Figure 6 The third liquid inlet pipe 9 shown connects the second receiving cavity and the external environment to facilitate the replenishment of liquid to the second housing 7. The second housing 7 may also be equipped with a sealing cap 12, which seals the connection hole between the third liquid inlet pipe 9 and the external environment, thereby preventing internal liquid spillage or external contaminants from entering the liquid. A handle 11 may be provided on the side of the second drive assembly 10 away from the second receiving cavity, allowing the user to pull the second drive assembly 10 to reset it or drive it toward the second liquid inlet pipe 8. The structure of the first housing 1 can also be as described above. Figure 4 and Figure 5 As shown, it includes a sub-shell (not marked in the figure) and a top plate 13. The sub-shell has a groove inside, and the top plate 13 can be detachably connected to the sub-shell to seal the groove, thereby forming a first receiving cavity. This structure allows the first shell 1 to be easily disassembled to assemble the moving components and nozzle 15 and other structures in the first receiving cavity.

[0046] Furthermore, Figures 1-2 and Figure 6 The second drive assembly includes a liquid pump, which is disposed in the second receiving cavity on the side near the second inlet pipe 8.

[0047] In this embodiment, the liquid pump can provide greater power to ensure a continuous and stable flow of liquid into the first receiving chamber, thereby improving the efficiency of clearing blockages.

[0048] Furthermore, Figures 1-2 and Figure 6 The second inlet pipe includes a first opening and a second opening disposed opposite to each other. The first opening is connected to the second receiving cavity, and the second opening is connected to the first receiving cavity. Along the direction from the nozzle 15 to the moving assembly, the position of the first opening is higher than that of the second opening. The second drive assembly is used to move or rotate to block or open the first opening.

[0049] In this embodiment, the direction from the nozzle 15 to the moving component is the Z direction in the figure. Since the position of the first opening is higher than that of the second opening, the liquid will automatically enter the second receiving cavity under the action of gravity. At this time, the user can control the rate and timing of the liquid entering the first receiving cavity by driving the second component to block or open the first opening.

[0050] Furthermore, the liquid is a cleaning solution that reacts chemically with the blockage (mainly composed of ink) to dissolve it and form a liquid, thereby efficiently removing the blockage. It should be understood that the cleaning solution includes one or more of the following: water, acetonitrile-isopropyl acetate, chloroform, chlorobenzene, tetrahydrofuran, and glycol ether compounds.

[0051] Further, please refer to Figures 2-4 The printing device includes at least one connecting component and multiple printing mechanisms, with the first housings 1 of two adjacent printing mechanisms connected by the connecting component.

[0052] In this embodiment, because the printing mechanism can be connected by the connecting components, the printing mechanism of this embodiment can print a large area at the same time, thereby improving the working efficiency of the printing mechanism.

[0053] Further, please refer to Figures 2-4 The first housing 1 is provided with a connection hole 201.

[0054] The connecting assembly includes a connecting plate 205 and a first connecting portion 208 and a second connecting portion 206 disposed on the connecting plate 205. The first connecting portion 208 and the second connecting portion 206 are respectively disposed in the connecting holes 201 of two adjacent first housings 1, so that the first connecting portion 208 and the second connecting portion 206 are respectively connected to the two adjacent first housings 1.

[0055] In this embodiment, when multiple first housings 1 need to be connected, the connecting plate 205 can be placed between adjacent first housings 1 firstly, and then the connecting plate 205 can be moved along the Z direction in the figure so that the first connecting part 208 and the second connecting part 206 of the connecting plate 205 pass through the first housings 1 located on both sides of the connecting plate 205 respectively. At this time, the first connecting part 208 and the second connecting part 206 pass through the connecting hole 201 and can be engaged with the inner side wall of the first housing 1, thereby connecting adjacent first housings 1.

[0056] It should be understood that the first connecting part 208 and the second connecting part 206 can be interference-fitted with the connecting hole 201, which can prevent wobbling between adjacent first housings 1. If multiple first housings 1 are all provided with driving components, the limiting members 3 of the driving components of multiple first housings 1 can be connected to each other through structures such as connecting plates; at this time, after the user drives any driving component, the driving components of the other first housings 1 will also drive the moving components to move towards the printhead 15, thereby improving the efficiency of the printing device. If the connecting hole 201 is provided on the side wall of the first receiving cavity (X direction in the figure), the connecting plate 205 can be bent into a "U" shape, and the two outer side walls (X direction) of the connecting plate 205 are respectively provided with the first connecting part 208 and the second connecting part 206, thereby completing the connection between multiple first housings 1.

[0057] Further, please refer to Figures 2-4 The first housing 1 is also provided with a magnetic suction hole 19, and a magnetic suction cylinder 202 is provided in the first receiving cavity. The magnetic suction cylinder 202 communicates with the magnetic suction hole 19. The connecting assembly also includes a first magnetic suction member 207 and a second magnetic suction member connected to the connecting plate 205.

[0058] The first magnetic absorbing element 207 and the second magnetic absorbing element are respectively disposed in the magnetic absorbing cylinders 202 of two adjacent first housings 1 and are connected to the magnetic absorbing cylinders 202.

[0059] In this embodiment, firstly, the magnetic chuck 202 is located within the first receiving cavity. Therefore, when the first magnetic chuck 207 and the second magnetic chuck are respectively inserted into the magnetic chuck 202, the magnetic chuck 202 can not only prevent adjacent first housings 1 from misaligning along the Z-axis direction, but also prevent adjacent first housings 1 from moving along the XY plane in the figure, thereby achieving the effect of fixing multiple first housings 1 and improving the stability and service life of the printing device. Secondly, when the magnetic chuck 202, the first magnetic chuck 207, and the second magnetic chuck are connected, the magnetic force will guide the first magnetic chuck 207 and the second magnetic chuck into the magnetic chuck 202 within the adjacent first housings 1. Therefore, this embodiment can also guide the assembly between the connecting plate 205 and the adjacent first housings 1, thereby improving the assembly efficiency of the printing device.

[0060] It should be understood that at least one of the magnetic chuck 202 and the first magnetic chuck 207 is magnetic, and the other is metal or similarly magnetic, so that the two can be tightly connected by magnetic force; similarly, at least one of the magnetic chuck 202 and the second magnetic chuck is also magnetic, and the other is metal or similarly magnetic. The first magnetic chuck 207 tube can be pre-installed to be installed in the first receiving cavity before the moving assembly is installed.

[0061] The magnetic attraction position between the first magnetic tube and the first magnetic attractor 207 can be the side wall and top wall of the first magnetic attractor 207, or only the top wall of the first magnetic attractor 207. Similarly, the second magnetic attractor can also be set in this way. For example, taking the second magnetic attractor as an example, the second magnetic attractor can include a column 203 and a magnetic head 204. The magnetic head 204 is used to make a magnetic connection with the inner top wall of the magnetic cylinder 202, and the column 203 is used to pass through the magnetic cylinder 202. At this time, by reducing the magnetic attraction area, the production cost of the magnetic cylinder 202 and the second magnetic attractor can be reduced.

[0062] In some embodiments, a portion of the first housing 1 can be... Figure 2 The first housing 1 has a fixed post 17 and other structures to connect with external devices (such as a robotic arm) to move the printing position of the printhead 15. At this time, the first housing 1 relies on the connecting post, which provides high stability. The remaining parts of the first housing 1 do not need to be connected to the external device through the fixed post 17. The fixed post 17 can be provided with an external thread 21 to connect with the external device through the external thread 21.

[0063] Further, please refer to Figure 2 and Figure 4There are N first magnetic accumulators 207 and corresponding magnetic cylinders 202. There are N-1 first connecting parts 208. The first connecting parts 208 are located between adjacent first magnetic accumulators 207. There are N second connecting parts 206. There are N-1 second magnetic accumulators and their corresponding magnetic cylinders 202. The second magnetic accumulators are located between adjacent second connecting parts 206. Along the direction from one end of the first housing 1 to the other end of the first housing 1 of the connecting plate 205, the first connecting parts 208 and the first magnetic accumulators 207 are arranged opposite to each other. N≥2.

[0064] In this embodiment, Figure 4 There are two first magnetic suction components 207, one first connecting part 208, one second magnetic suction component, and two second connecting parts 206. Along the X direction in the figure, the first magnetic suction components 207 and the second connecting parts 206 are arranged opposite each other, and the second magnetic suction component and the first connecting part 208 are arranged opposite each other. Therefore, the end of the connecting plate 205 with the first magnetic suction component 207 has strong connection reliability and can be connected to the first housing 1 with structures such as the fixing post 17, ensuring that the connecting plate 205 is not easily detached. Meanwhile, the end of the connecting plate 205 with the second magnetic suction component has fewer first magnetic suction components 207, making it easier to disassemble and connect to the remaining parts of the first housing 1 without structures such as the fixing post 17, making that part of the first housing 1 easy to disassemble and install.

[0065] Further, please refer to Figure 3 and Figure 4 The magnetic suction hole 19, the connecting hole 201 and the third sub-through hole are the same size.

[0066] In this embodiment, the magnetic suction hole 19, the connecting hole 201, and the third sub-through hole are of the same size. Therefore, the printing device can disassemble any nozzle 15 so that the third sub-through hole corresponding to the disassembled nozzle 15 can be used as the magnetic suction hole 19 or the connecting hole 201, so as to improve the connection strength between the connecting plate 205 and the first housing 1 at any time according to the weight of the first housing 1.

[0067] Further, please refer to Figure 4 The first connecting part 208 includes a plurality of first sub-buckles. Each first sub-buckle includes a first connecting part and a first snap-fit ​​part that are connected to each other. The first connecting part passes through the connecting hole 201, and the first snap-fit ​​part abuts against the inner wall of the first receiving cavity. The first sub-buckles are arranged symmetrically about the central axis 2 of the connecting hole 201.

[0068] The second connecting part 206 includes a plurality of second sub-buckles. The second sub-buckles include interconnected second connecting parts and second snap-fit ​​parts. The second connecting parts pass through the connecting hole 201, and the second snap-fit ​​parts abut against the inner wall of the first receiving cavity. The second sub-buckles are arranged symmetrically about the central axis 2 of the connecting hole 201.

[0069] In this embodiment, because the first sub-buckle is symmetrically arranged about the central axis 2 of the connecting hole 201, an effective fixing structure can be formed between the first snap-fit ​​part and the inner wall of the first housing 1. For example, when there are three first sub-buckles, the first snap-fit ​​parts are symmetrically distributed at a 120° angle, and the connection points between the first snap-fit ​​parts and the inner wall of the first housing 1 are distributed in an equilateral triangle. Therefore, the connection stability between the connecting plate 205 and the first housing 1 is higher than that of other triangular connection points (e.g., isosceles triangle distribution). Similarly, when there are four first sub-buckles as shown in the figure, the first snap-fit ​​parts are symmetrically distributed at a 90° angle, and the connection points between them and the inner wall of the first housing 1 are distributed in a square. Therefore, the connection stability between the connecting plate 205 and the first housing 1 is higher than that of other rectangles (e.g., elongated rectangles).

[0070] Accordingly, please refer to Figures 1-6 This application also provides a printing device, which includes the printing apparatus of any of the above embodiments.

[0071] In this embodiment, the user can drive the moving component to move along the Z direction in the figure, so that the protrusion 6 gradually enters the inkjet channel 16 and contacts the blockage; finally, when the protrusion 6 passes through the inkjet channel 16 to the external environment, the blockage will be discharged synchronously. Therefore, the printing device of this embodiment can quickly complete the removal of blockages in multiple printheads 15, thereby avoiding printhead clogging and improving the efficiency of the printing device. At the same time, the printing device of this embodiment has a simple structure and does not require high-pressure printheads 15 or other components, thus resulting in low production costs.

[0072] The printing apparatus and printing device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A printing device, characterized in that, The printing mechanism includes: a first housing having a first receiving cavity for containing ink; The printhead is disposed on the first housing, and an inkjet channel is provided inside the printhead, the inkjet channel connecting the first receiving cavity and the external environment; A movable component is disposed within the first receiving cavity, and the movable component includes a movable member and a protrusion disposed on the movable member. The protrusion corresponds to the position of the printhead, and the movable member is used to move closer to or further away from the printhead so that the protrusion enters or moves away from the inkjet channel.

2. The printing apparatus according to claim 1, characterized in that, The movable component divides the first receiving cavity into a first sub-receiving cavity and a second sub-receiving cavity, with the nozzle located within the second sub-receiving cavity; The printing mechanism further includes a first liquid inlet pipe, one end of which passes through the first housing and connects to the second sub-accommodating cavity.

3. The printing apparatus according to claim 1, characterized in that, The printing mechanism further includes a first driving component, which includes a limiting member, a connecting post, and an elastic member. The connecting post passes through the first housing on the side away from the nozzle, with one end connected to the movable component and the other end provided with the limiting component. The elastic component is sleeved on the outside of the connecting post, with one end abutting against the first housing and the other end abutting against the limiting component; and / or, Both the nozzle and the protrusion are multiple, and the protrusion is arranged in a one-to-one correspondence with the nozzle.

4. The printing apparatus according to claim 2, characterized in that, The printing mechanism further includes a second housing and a second drive assembly. The second housing has a second receiving cavity for containing liquid. The second receiving cavity is connected to the first receiving cavity. The second drive assembly is used to control the liquid to enter the first receiving cavity.

5. The printing apparatus according to claim 4, characterized in that, The printing mechanism further includes a second liquid inlet pipe, and the first receiving cavity and the second receiving cavity are connected through the second liquid inlet pipe; The second drive assembly abuts against the side wall of the second receiving cavity and is used to move closer to or further away from the second inlet pipe to control the liquid to enter the first receiving cavity through the second inlet pipe.

6. The printing apparatus according to claim 5, characterized in that, The second drive assembly includes a liquid pump disposed within the second receiving cavity on a side near the second inlet pipe; and / or, The second inlet pipe includes a first opening and a second opening disposed opposite to each other. The first opening communicates with the second receiving cavity, and the second opening communicates with the first receiving cavity. Along the direction from the nozzle to the moving component, the position of the first opening is higher than that of the second opening. The second driving component is used to move or rotate to block or open the first opening.

7. The printing apparatus according to claim 1, characterized in that, The printing device includes at least one connecting component and multiple printing mechanisms, wherein the first housings of two adjacent printing mechanisms are connected by the connecting component.

8. The printing apparatus according to claim 7, characterized in that, The first housing is provided with a connection hole; The connecting assembly includes a connecting plate and a first connecting portion and a second connecting portion disposed on the connecting plate. The first connecting portion and the second connecting portion are respectively disposed in the connecting holes of two adjacent first housings, so that the first connecting portion and the second connecting portion are respectively connected to the two adjacent first housings.

9. The printing apparatus according to claim 8, characterized in that, The first housing is also provided with a magnetic suction hole, and a magnetic suction cylinder is provided in the first receiving cavity, the magnetic suction cylinder being in communication with the magnetic suction hole; The connecting assembly further includes a first magnetic chuck and a second magnetic chuck disposed on the connecting plate. The first magnetic chuck and the second magnetic chuck are respectively disposed in the magnetic cylinders of two adjacent first housings and connected to the magnetic cylinders.

10. A printing device, characterized in that, The printing device includes the printing apparatus described in any one of claims 1 to 9.

Images