Maintenance device for inkjet unit and inkjet printer

Abstract

The utility model relates to inkjet printing equipment maintenance technical field, concretely relates to a kind of maintenance device and printing control instrument of inkjet unit.To solve the technical problem that the existing cleaning method can only remove ink residue outside inkjet hole, cannot effectively remove internal residual, thereby leading to the technical problem that internal inkjet hole still exists blockage hidden danger.Utiltity model provides a kind of maintenance device of inkjet unit, maintenance device includes base and sealing unit;Maintenance device is used to maintain inkjet unit, inkjet unit has first surface, and first surface has inkjet hole;Sealing unit is movably connected base, when sealing unit is pushed by inkjet unit along direction of resistance, sealing unit can be switched from exposed state to sealing state;Wherein, in exposed state, sealing unit is separated from first surface, to make inkjet hole be in open environment;In sealing state, sealing unit is sealed with first surface, to make inkjet hole be in closed environment.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printing equipment maintenance technology, specifically to a maintenance device for an inkjet unit and a printing control instrument. Background Technology

[0002] Inkjet printers are widely recognized in the market due to their relatively low cost and high print quality. Their working principle is as follows: the inkjet unit of the inkjet printer sprays ink droplets onto the surface of a printing medium, such as paper, through tiny inkjet nozzles, thereby forming text or images.

[0003] However, if the inkjet nozzles are not used for a long time, they will be exposed to the air. The moisture in the ink in the nozzles will gradually evaporate, and the remaining pigment particles or resin components will solidify and deposit in the nozzles, forming ink residue. This will cause the nozzles to become clogged, ultimately resulting in abnormal printing function of the inkjet printer.

[0004] When the inkjet nozzles become clogged, there are two main types of common cleaning methods:

[0005] 1. Manual wiping: Use a wet wipe or special cleaning pad to wipe the surface of the inkjet unit to remove ink residue from the inkjet nozzles;

[0006] 2. Scraper device (e.g., doctor blade): The doctor blade scrapes away ink residue at the ink nozzle through the relative movement between itself and the inkjet unit.

[0007] However, regardless of the method used, they are essentially "post-cleaning," meaning they can only remove ink residue from the outside or ends of the inkjet nozzles. If the nozzles are already clogged inside, these methods cannot completely restore their smooth flow, and therefore cannot truly guarantee that the inkjet unit will not clog in the long term. Utility Model Content

[0008] This utility model provides a maintenance device and printing control instrument for an inkjet unit, which solves the technical problem that existing cleaning methods can only remove ink residue from the outside or end of the inkjet nozzle, but cannot effectively remove residue inside the inkjet nozzle, thus causing the inkjet nozzle to still have the risk of clogging.

[0009] The above-mentioned objectives of this utility model can be achieved by the following technical solutions:

[0010] This utility model provides a maintenance device for an inkjet unit. The inkjet unit has a first surface with inkjet nozzles. The maintenance device includes a base and a sealing unit. The sealing unit is movably connected to the base. When the sealing unit is pushed by the inkjet unit in a pushing direction, the sealing unit can switch from an exposed state to a sealed state. In the exposed state, the sealing unit is separated from the first surface, so that the inkjet nozzles are in an open environment. In the sealed state, the sealing unit is sealed to the first surface, so that the inkjet nozzles are in a closed environment.

[0011] According to one embodiment of the present invention, the base includes a support mechanism and a guide mechanism; the support mechanism has a receiving cavity and an installation port; the installation port is located at the upper end of the support mechanism and communicates with the receiving cavity; the guide mechanism is disposed on the support mechanism and is used to guide the sealing unit to move within the receiving cavity; the sealing unit is located within the receiving cavity and is movably connected to the guide mechanism.

[0012] According to one embodiment of the present invention, the guide mechanism is a slide rail disposed on the side wall of the receiving cavity. The slide rail includes a sealing section, which is inclined upward along the pushing direction. The sealing section includes an exposed end and a sealing end disposed opposite to each other. In the exposed state, the sealing unit is located at the exposed end; in the sealed state, the sealing unit is located at the sealing end.

[0013] According to one embodiment of the present invention, a connecting unit is further included, located within the receiving cavity, for connecting the support mechanism and the sealing unit in the sealed state, so as to lock the sealing unit in the sealed state.

[0014] According to one embodiment of the present invention, the connecting unit includes a male plug and a female plug that are detachably connected; the male plug is connected to the support mechanism, and the female plug is connected to the sealing unit; or, the male plug is connected to the sealing unit, and the female plug is connected to the support mechanism; wherein, in the sealed state, the male plug and the female plug are inserted into each other to lock.

[0015] According to one embodiment of the present invention, the connecting unit includes a locked connection state and a deactivated connection state; the slide further includes a disconnect segment for separating the male plug and the female plug, the disconnect segment extending along the pushing direction, and the end of the disconnect segment connecting with the sealing end of the sealing segment; when the sealing unit located at the sealing end is pushed into the disconnect segment by the inkjet unit, the connecting unit switches from the locked connection state to the deactivated connection state.

[0016] According to one embodiment of the present invention, the maintenance device further includes a reset unit disposed within the receiving cavity and located between the lower end of the sealing unit and the bottom of the receiving cavity. One end of the reset unit is connected to the cavity wall of the receiving cavity, and the other end of the reset unit is connected to the sealing unit. In the disconnected state, the reset unit can drive the sealing unit to reset from the sealed state to the exposed state.

[0017] According to one embodiment of the present invention, the sealing unit includes a sliding mechanism, a pushing mechanism, and a sealing mechanism; the sliding mechanism is located within the receiving cavity and is movably connected to the guiding mechanism; the pushing mechanism is disposed on the sliding mechanism for the inkjet unit to push against it; the sealing mechanism is disposed on the sliding mechanism and is used to seal against the first surface, and the sealing mechanism and the pushing mechanism are arranged sequentially along the pushing direction.

[0018] According to one embodiment of the present invention, it further includes a scraping unit, which is arranged sequentially with the base along the pushing direction.

[0019] This utility model also provides a printing controller, including a printing controller housing, a printing carriage, an inkjet unit, and a maintenance device for the inkjet unit of the above-described embodiments; the printing carriage is located inside the printing controller housing and is used to drive the inkjet unit to move; the inkjet unit is connected to the printing carriage; the maintenance device is located inside the printing controller housing.

[0020] The features and advantages of this utility model regarding the maintenance device for an inkjet unit and the printing control instrument are as follows:

[0021] By incorporating a sealing unit with a movable connecting base, the inkjet unit pushes the sealing unit from an exposed state to a sealed state. This keeps the inkjet nozzles in a closed environment during non-printing periods, preventing air contact and inhibiting ink evaporation and solidification. This proactive isolation and protection of the inkjet nozzles during idle periods overcomes the fundamental flaw of existing technologies that rely solely on post-printing scraping to prevent internal clogging. The working principle is as follows: when the inkjet unit pushes the sealing unit, the sealing unit moves from a position separated from the first surface to a position where it seals against the first surface, forming a closed environment. When the inkjet unit retracts, the sealing unit disengages from the sealing position, exposing the inkjet nozzles back to the environment for subsequent printing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of a maintenance device for an inkjet unit according to the present invention.

[0024] Figure 2 This is a three-dimensional schematic diagram of a maintenance device for an inkjet unit according to this utility model from another angle;

[0025] Figure 3 This is a three-dimensional schematic diagram of a maintenance device for an inkjet unit according to this utility model from another angle;

[0026] Figure 4 This is an exploded view of a maintenance device for an inkjet unit according to this utility model;

[0027] Figure 5 This is an exploded view of the sealing unit of this utility model;

[0028] Figure 6 This is a top view of a maintenance device for an inkjet unit according to this utility model;

[0029] Figure 7 yes Figure 6 A cross-sectional view along the AA direction;

[0030] Figure 8 This is a front view of the maintenance device for an inkjet unit of this utility model when it is not being maintained;

[0031] Figure 9 This is a front view of the inkjet unit maintenance device of this utility model during ink scraping.

[0032] Figure 10 This is a front view of a maintenance device for an inkjet unit according to this utility model, when it is ready to begin pushing.

[0033] Figure 11 This is a front view of the maintenance device for an inkjet unit of this utility model when it is sealed.

[0034] Figure 12 This is a front view of the maintenance device for an inkjet unit of this utility model when disconnected.

[0035] Reference numerals: 1000, inkjet unit; 1001, first surface; 100, maintenance device; 1, base; 11, support mechanism; 111, receiving cavity; 112, mounting port; 12, guide mechanism; 121, sealing section; 122, disconnection section; 2, sealing unit; 21, sliding mechanism; 211, guide post; 22, pushing mechanism; 23, sealing mechanism; 3, connecting unit; 31, male plug; 32, female plug; 4, reset unit; 5, doctor blade unit; 51, ink collection mechanism; 5100, ink-absorbing sponge; 52, partition plate; 5200, waste ink flow hole; 53, doctor blade mechanism; 501, inner cavity; 511, ink receiving cavity; 512, mounting cavity; 521, ink receiving opening; 522, mounting opening; T, pushing direction. Detailed Implementation

[0036] 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.

[0037] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no sequential order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "at least one" means one or more, and "multiple" means two or more. The use of the term "may" is intended to indicate that any attribute described that is included in "may" is optional.

[0038] In this embodiment, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0039] Implementation Method 1

[0040] like Figures 1 to 12As shown, this utility model provides a maintenance device 100 for an inkjet unit 1000. The inkjet unit 1000 has a first surface 1001 with inkjet nozzles. The maintenance device 100 includes a base 1 and a sealing unit 2. The sealing unit 2 is movably connected to the base 1. When the sealing unit 2 is pushed by the inkjet unit 1000 in a pushing direction, the sealing unit 2 can switch from an exposed state to a sealed state. In the exposed state, the sealing unit 2 is separated from the first surface 1001 so that the inkjet nozzles are in an open environment. In the sealed state, the sealing unit 2 is sealed to the first surface 1001 so that the inkjet nozzles are in a closed environment.

[0041] In specific implementation, by setting a sealing unit 2 that can be movably connected to the base 1, it is made to be exposed under the pushing action of the inkjet unit 1000 (e.g., Figure 10 (As shown) Switch to sealed state (e.g.) Figure 11 As shown in the diagram, this keeps the inkjet nozzles in a closed environment during non-printing periods, preventing air contact and inhibiting ink evaporation and solidification. This achieves active isolation and protection of the inkjet nozzles during idle periods, solving the fundamental defect of existing technologies that rely solely on post-printing scraping to prevent internal blockage of the inkjet nozzles. Its working principle is as follows: When the inkjet unit 1000 pushes against the sealing unit 2, the sealing unit 2 moves from a position separated from the first surface 1001 to a position where it seals against the first surface 1001, forming a closed environment; when the inkjet unit 1000 is removed, the sealing unit 2 disengages from the sealing position, allowing the inkjet nozzles to be exposed to the environment again for subsequent printing.

[0042] like Figures 1 to 3 As shown, in this embodiment, the inkjet unit 1000 can be an ink cartridge, a printhead connected to an ink tank, or a printing carriage equipped with a printhead or ink cartridge; the first surface 1001 can be located at the lower end of the inkjet unit 1000. The sealing unit 2 can be a rubber structural component, which acts as a cover to seal the first surface 1001. An open environment refers to an inkjet nozzle exposed to external air. A sealed environment can be a sealed cavity formed by the first surface 1001 and the sealing unit 2.

[0043] like Figures 1 to 3 As shown, according to one embodiment of the present invention, the base 1 includes a support mechanism 11 and a guide mechanism 12; the support mechanism 11 has a receiving cavity 111 and a mounting port 112; the mounting port 112 is located at the upper end of the support mechanism 11 and communicates with the receiving cavity 111; the guide mechanism 12 is disposed on the support mechanism 11 and is used to guide the sealing unit 2 to move within the receiving cavity 111; the sealing unit 2 is located within the receiving cavity 111 and is movably connected to the guide mechanism 12.

[0044] In practice, by setting a support mechanism 11 and a guide mechanism 12 in the base 1, the sealing unit 2 is located in the receiving cavity 111, thereby reducing the volume of the maintenance device; the guide mechanism 12 can guide the sealing unit 2 to move stably along a preset path, ensuring its positional accuracy when switching between the exposed state and the sealed state.

[0045] In this embodiment, the support mechanism 11 may be in the shape of a cuboid. Driven by the inkjet unit 1000, the sealing unit 2 may move within the support mechanism 11 along its length. The guide mechanism 12 may be a guide slide, a guide strip, or a guide rail.

[0046] like Figures 1 to 3 As shown, according to one embodiment of the present invention, the guide mechanism 12 is a slide, which is disposed on the side wall of the receiving cavity 111. The slide includes a sealing section 121, which is inclined upward along the self-pushing direction T. The sealing section 121 includes an exposed end and a sealing end disposed opposite to each other. In the exposed state, the sealing unit 2 is located at the exposed end; in the sealed state, the sealing unit 2 is located at the sealing end.

[0047] In a specific implementation, by providing a slide containing an inclined sealing section 121 on the side wall of the receiving cavity 111, the sealing unit 2 moves along an inclined path when pushed by the inkjet unit 1000, and finally covers the first surface from below, without the need to set up an additional linear motion mechanism that requires electrical control.

[0048] like Figures 1 to 3 As shown, in this embodiment, the side wall of the sealing unit 2 is provided with a guide post 211. The guide post 211 can be used as a component of the sliding mechanism 21 and is disposed on its side wall. The guide post 211 can be movably inserted in the slide and can move along the extension direction of the slide. That is, the sealing unit 2 can move in the direction of upward tilting from the pushing direction T, so that it gradually approaches the first surface 1001 and seals with it as the inkjet unit 1000 pushes against it.

[0049] like Figure 2 As shown, according to one embodiment of the present invention, a connecting unit 3 is also included, located in the receiving cavity 111, for connecting the support mechanism 11 and the sealing unit 2 in a sealed state, so as to lock the sealing unit 2 in a sealed state.

[0050] In a specific implementation, a connecting unit 3 is provided in the receiving cavity 111, and the sealing unit 2 is locked to the support mechanism 11 when it reaches the sealing end. That is, the support mechanism 11 is connected to the sealing unit 2 through the connecting unit 3, so as to ensure the continuous stability of the closed environment.

[0051] like Figure 2As shown, according to one embodiment of the present invention, the connecting unit 3 includes a male plug 31 and a female plug 32 that are detachably connected; the male plug 31 is connected to the support mechanism 11, and the female plug 32 is connected to the sealing unit 2; or, the male plug 31 is connected to the sealing unit 2, and the female plug 32 is connected to the support mechanism 11; wherein, in the sealed state, the male plug 31 and the female plug 32 are inserted into each other to lock.

[0052] In practice, the male plug 31 and the female plug 32 are respectively fixed to the support mechanism 11 and the sealing unit 2 (or vice versa). When the sealing unit 2 reaches the sealing end, the two automatically plug into each other to form a rigid lock.

[0053] In this embodiment, the male connector 31 and the female connector 32 can be existing technology. When the male connector 31 is first inserted into the female connector 32, the two are locked together and cannot be directly separated in the opposite direction of insertion. When unlocking is required, the male connector 31 can be pushed to a predetermined position in the insertion direction, and then pulled out in the opposite direction to achieve separation.

[0054] In some embodiments, the connecting unit 3 may include a latch and a slot that can cooperate. The latch corresponds to the male plug 31 in the above embodiments, and the slot corresponds to the female plug 32 in the above embodiments.

[0055] like Figure 2 As shown, according to one embodiment of the present invention, the connecting unit 3 includes a locked connection state and a deactivated connection state; the slide also includes a disconnecting segment 122 for separating the male plug 31 and the female plug 32, the disconnecting segment 122 extending along the pushing direction T, and the end of the disconnecting segment 122 connecting with the sealing end of the sealing segment 121; as shown Figure 11 and Figure 12 As shown, when the sealing unit 2 located at the sealing end is pushed by the inkjet unit 1000 and enters the disconnection section 122, the connection unit 3 switches from the locked connection state to the disconnection state.

[0056] In specific implementation, when the sealing unit 2 located at the sealing end is pushed into the disconnection segment 122 by the inkjet unit 1000 along the pushing direction T, the connecting unit 3 switches from the locked connection state to the disconnected connection state, providing a prerequisite for the subsequent reset of the sealing unit 2 (that is, switching from the sealed state back to the exposed state).

[0057] In this embodiment, the locked connection state means that after the male plug 31 and the female plug 32 are inserted, they form a mechanical lock. At this time, if force is applied in the opposite direction to the insertion direction, they cannot be separated. The released connection state means that in the locked connection state, when the male plug 31 continues to move a predetermined distance relative to the female plug 32 in the original insertion direction, its internal mechanical lock is released, and the male plug 31 can then be separated from the female plug 32 in the opposite direction to the insertion direction.

[0058] like Figures 3 to 7 As shown, according to one embodiment of the present invention, the maintenance device 100 further includes a reset unit 4, which is disposed in the receiving cavity 111 and located between the lower end of the sealing unit 2 and the bottom of the receiving cavity 111. One end of the reset unit 4 is connected to the cavity wall of the receiving cavity 111, and the other end of the reset unit 4 is connected to the sealing unit 2. In the disconnected state, the reset unit 4 can drive the sealing unit 2 to reset from the sealed state to the exposed state.

[0059] In practice, a reset unit 4 is installed at the bottom of the receiving cavity 111, with its two ends connected to the cavity wall and the sealing unit 2 respectively. After the connecting unit 3 is unlocked, it provides a restoring driving force, causing the sealing unit 2 to automatically return to the exposed end, ensuring that the inkjet nozzle is in an open environment and ready for the next print. Its working principle is as follows: the reset unit 4 stores energy when the sealing unit 2 is in the sealed state, and releases elastic potential energy when the connecting unit 3 is disconnected, driving the sealing unit 2 to return to the exposed end along the slide, completing the automatic reset from the sealed state to the exposed state.

[0060] In this embodiment, the reset unit 4 can be a spring, with one end of the spring connected to the bottom of the receiving cavity 111 and the other end of the spring connected to the lower end of the sliding mechanism 21.

[0061] Understandably, without the connection unit 3, when the printing carriage of an inkjet printer or other inkjet printing device is powered off, the pushing force of the inkjet unit 1000 against the sealing unit 2 will drop sharply, and the reset unit 4 will directly drive the sealing unit 2 back to the exposed end along the guide mechanism 12 (slide). In other words, without the connection unit 3, the printing carriage needs to be continuously powered even if the inkjet printer or other inkjet printing device is not performing a printing operation, which will cause unnecessary waste of electrical energy.

[0062] like Figure 4 and Figure 5 As shown, according to one embodiment of the present invention, the sealing unit 2 includes a sliding mechanism 21, a pushing mechanism 22, and a sealing mechanism 23; the sliding mechanism 21 is located in the receiving cavity 111 and is movably connected to the guide mechanism 12; the pushing mechanism 22 is disposed on the sliding mechanism 21 and is used for the inkjet unit 1000 to push against it; the sealing mechanism 23 is disposed on the sliding mechanism 21 and is used for sealing cooperation with the first surface 1001, and the sealing mechanism 23 and the pushing mechanism 22 are arranged sequentially along the pushing direction T.

[0063] In practical implementation, the pushing mechanism 22 receives the thrust from the inkjet unit 1000, the sliding mechanism 21 transmits the motion, and the sealing mechanism 23 performs the sealing action. The three work together to achieve structural decoupling of force transmission and sealing functions. Its working principle is as follows: the inkjet unit 1000 pushes against the pushing mechanism 22, and the force is transmitted through the sliding mechanism 21 to drive the sealing unit 2 to move as a whole. The sealing mechanism 23 follows and fits against the first surface 1001, realizing a step-by-step collaborative mechanism of "being pushed-conducting-sealing".

[0064] like Figure 5 As shown, in this embodiment, the pushing mechanism 22 can be an "L"-shaped plate structure, with one end connected to the upper end of the sliding mechanism 21 and the other end used for the side wall of the inkjet unit 1000 to push against it.

[0065] In some embodiments, the sealing unit 2 may further include an elastic mechanism. The sealing mechanism 23 is elastically connected to the sliding mechanism 21 through the elastic mechanism, which is used to apply a preload to the sealing mechanism 23 to ensure that when the sealing mechanism 23 mates with the first surface 1001, a stable and uniform sealing pressure is generated on the first surface 1001, thereby improving the reliability of the seal.

[0066] like Figure 3 As shown, according to one embodiment of the present invention, it also includes a scraping unit 5, which is arranged sequentially with the base 1 along the pushing direction T.

[0067] In practice, by setting the scraper unit 5 on the outer side of the base 1 along the pushing direction T, the inkjet unit 1000 contacts the scraper unit 5 before entering the sealing position to remove ink residue outside the inkjet hole, forming a double protection of "scraping before sealing".

[0068] like Figure 4 , Figure 6 and Figure 7As shown, in this embodiment, the ink-scraping unit 5 includes an ink-collecting mechanism 51, a partition plate 52, and an ink-scraping mechanism 53. The ink-collecting mechanism 51 is connected to the side wall of the support mechanism 11 and surrounds an inner cavity 501 and an opening at the upper end. The partition plate 52 is vertically disposed in the inner cavity 501 and divides the inner cavity 501 into an ink-receiving sub-cavity 511 and an installation sub-cavity 512, and divides the opening into an ink-receiving sub-opening 521 and an installation sub-opening 522. The ink-receiving sub-cavity 511 is used to install an ink-absorbing sponge 5100. The ink-receiving sub-opening 521 is used to supply ink for ink jetting. Unit 1000 pre-sprays waste ink above the ink receiving opening 521. The sprayed waste ink enters the ink-absorbing sponge 5100 of the ink receiving cavity 511 through the ink receiving opening 521 and is absorbed by the ink-absorbing sponge 5100. The doctor blade mechanism 53 can be a doctor blade. The doctor blade passes through the mounting opening 522 in the mounting cavity 512. The side wall of the doctor blade and the side wall of the mounting cavity 512 surround a waste ink flow channel. The partition plate 52 has a waste ink flow hole 5200. The ink receiving cavity 511 is connected to the waste ink flow channel through the waste ink flow hole 5200. The working principle is that when the inkjet unit 1000 moves along the pushing direction T, its first surface 1001 will come into contact with the ink scraping mechanism 53. The ink scraping mechanism 53 will scrape off the waste ink and ink residue at the inkjet hole on the first surface 1001. The scraped waste ink will enter the ink receiving cavity 511 through the waste ink channel and waste ink flow hole 5200 and be absorbed by the ink-absorbing sponge 5100.

[0069] Implementation Method 2

[0070] This utility model also provides a printing controller, including a printing controller housing, a printing carriage, an inkjet unit 1000, and a maintenance device 100 for the inkjet unit 1000 according to Embodiment 1; the printing carriage is located inside the printing controller housing and is used to drive the inkjet unit 1000 to move; the inkjet unit 1000 is connected to the printing carriage; the maintenance device 100 is located inside the printing controller housing.

[0071] The specific structure, working principle, and beneficial effects of the maintenance device 100 for the inkjet unit 1000 are the same as those in Implementation Method 1, and will not be repeated here.

[0072] The above descriptions are merely a few embodiments of this utility model. Those skilled in the art can make various modifications or variations to the embodiments of this utility model based on the content disclosed in the application documents without departing from the spirit and scope of this utility model.

Claims

1. A maintenance device for an inkjet unit, characterized by comprising: The maintenance device (100) includes a base (1) and a sealing unit (2); The maintenance device (100) is used to maintain the inkjet unit (1000), the inkjet unit (1000) having a first surface (1001) having inkjet holes; The sealing unit (2) is movably connected to the base (1). When the sealing unit (2) is pushed by the inkjet unit (1000) along the pushing direction (T), the sealing unit (2) can switch from an exposed state to a sealed state; wherein, In the exposed state, the sealing unit (2) is separated from the first surface (1001) so that the inkjet nozzle is in an open environment; In the sealed state, the sealing unit (2) is sealed to the first surface (1001) so that the inkjet nozzle is in a closed environment.

2. The maintenance device of an inkjet unit according to claim 1, characterized by The base (1) includes a support mechanism (11) and a guide mechanism (12); The support mechanism (11) has a receiving cavity (111) and a mounting port (112); the mounting port (112) is located at the upper end of the support mechanism (11) and communicates with the receiving cavity (111); The guide mechanism (12) is disposed on the support mechanism (11) and is used to guide the sealing unit (2) to move within the receiving cavity (111); The sealing unit (2) is located inside the receiving cavity (111) and is movably connected to the guide mechanism (12).

3. The maintenance device of an inkjet unit according to claim 2, characterized by The guide mechanism (12) is a slide rail, disposed on the side wall of the receiving cavity (111). The slide rail includes a sealing section (121), which is inclined upward along the pushing direction (T). The sealing section (121) includes an exposed end and a sealing end disposed opposite to each other. In the exposed state, the sealing unit (2) is located at the exposed end; In the sealed state, the sealing unit (2) is located at the sealing end.

4. The maintenance device of an inkjet unit according to claim 3, characterized in that, It also includes a connecting unit (3) for connecting the support mechanism (11) and the sealing unit (2) in the sealed state to lock the sealing unit (2) in the sealed state.

5. The maintenance device of an inkjet unit according to claim 4, characterized in that, The connecting unit (3) includes a male plug (31) and a female plug (32) that can be detachably connected; The male connector (31) is connected to the support mechanism (11), and the female connector (32) is connected to the sealing unit (2); or, The male connector (31) is connected to the sealing unit (2), and the female connector (32) is connected to the support mechanism (11); In the sealed state, the male plug (31) is inserted into the female plug (32) to lock it in place.

6. The maintenance device for the inkjet unit according to claim 5, characterized in that, The connection unit (3) includes a locked connection state and a deactivated connection state; The slide also includes a disconnect segment (122) for separating the male plug (31) and the female plug (32), the disconnect segment (122) extending along the pushing direction (T), and the end of the disconnect segment (122) being connected to the sealing end of the sealing segment (121); When the sealing unit (2) located at the sealing end is pushed into the disconnection segment (122) by the inkjet unit (1000), the connection unit (3) switches from the locked connection state to the disconnection state.

7. The maintenance device of an inkjet unit according to claim 6, characterized by The maintenance device (100) further includes a reset unit (4), which is disposed in the receiving cavity (111) and located between the lower end of the sealing unit (2) and the bottom of the receiving cavity (111). One end of the reset unit (4) is connected to the cavity wall of the receiving cavity (111), and the other end of the reset unit (4) is connected to the sealing unit (2). In the disconnected state, the reset unit (4) can drive the sealing unit (2) to reset from the sealed state to the exposed state.

8. The maintenance device of an inkjet unit according to Claim 2, characterized by The sealing unit (2) includes a sliding mechanism (21), a pushing mechanism (22) and a sealing mechanism (23). The sliding mechanism (21) is located in the receiving cavity (111) and is movably connected to the guide mechanism (12). The pushing mechanism (22) is disposed on the sliding mechanism (21) for the inkjet unit (1000) to push against it; The sealing mechanism (23) is disposed on the sliding mechanism (21) and is used to seal with the first surface (1001). The sealing mechanism (23) and the pushing mechanism (22) are arranged in sequence along the pushing direction (T).

9. The maintenance device of an inkjet unit according to any one of claims 1 to 8, characterized in that, It also includes a scraping unit (5), which is arranged in sequence with the base (1) along the pushing direction (T).

10. A stamping control instrument, characterized by, It includes a printer housing, a printer carriage, an inkjet unit (1000), and a maintenance device for the inkjet unit as described in any one of claims 1 to 9; The printing carriage is located inside the printing controller housing and is used to drive the inkjet unit (1000) to move; The inkjet unit (1000) is connected to the printing carriage; The maintenance device (100) is located inside the casing of the printing control instrument.

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