Printhead sealing and humidification device and inkjet printing equipment

Abstract

This application discloses a printhead sealing and moisturizing device and an inkjet printing device, applicable to the inkjet printing field. The device includes: a sealing and moisturizing assembly, comprising a sealing mechanism for forming a sealed space for the nozzle; and a lifting assembly disposed below the sealing mechanism, comprising a spring mechanism and a drive mechanism. The spring mechanism includes multiple springs and first positioning pins, with the first positioning pins disposed below and movably connected to the sealing mechanism. Springs are sleeved on the first positioning pins. The drive mechanism drives the sealing mechanism to move up and down, and the springs drive the sealing mechanism to move towards the nozzle. This application controls the up and down movement of the sealing mechanism through the drive mechanism, achieving positioning between the sealing mechanism and the nozzle. When the sealing mechanism moves upward, the spring mechanism increases the force between the sealing mechanism and the printhead, thereby improving the sealing and moisturizing effect of the sealing mechanism on the nozzle and reducing nozzle clogging.

Description

Technical Field

[0001] This invention relates to the field of inkjet printing, specifically to a printhead sealing and moisturizing device and an inkjet printing device. Background Technology

[0002] Inkjet printers are currently a popular type of printing equipment, and the printhead, as the most important component, has been widely applied in various fields along with the rise of inkjet printing. However, printheads are expensive consumables, and their lifespan is determined by various factors, one of which is nozzle clogging caused by ink drying. To solve this problem, traditional sealing methods mostly involve placing a sealing gasket on a moisture-retaining cap, which is then placed under the printhead to achieve a seal. However, this method is prone to incomplete sealing, resulting in poor sealing performance, and nozzle clogging in inkjet printers still occurs frequently. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a printhead sealing and moisturizing device and an inkjet printing device, which can improve the sealing effect of the printhead and reduce the occurrence of nozzle clogging.

[0004] In a first aspect, this application provides a nozzle sealing and moisturizing device, comprising:

[0005] A sealing and moisturizing assembly, the sealing and moisturizing assembly including a sealing mechanism for forming a sealing space for a nozzle;

[0006] A lifting assembly is provided below the sealing mechanism. The lifting assembly includes a spring mechanism and a drive mechanism. The spring assembly includes multiple springs and a first positioning pin. The multiple first positioning pins are located below the sealing mechanism and are movably connected to the sealing mechanism. The springs are sleeved on the first positioning pins. The drive mechanism is used to drive the sealing mechanism to move up and down to adjust the distance between the sealing mechanism and the nozzle. The springs are used to drive the sealing mechanism to move along the first positioning pins toward the nozzle.

[0007] The nozzle sealing and moisturizing device according to the first aspect of this application has at least the following beneficial effects: When it is necessary to seal and moisturize the nozzle, the nozzle is placed above the sealing mechanism, and the drive mechanism is activated. The drive mechanism moves the sealing mechanism upward. When the sealing mechanism moves to a preset position, since the top of the first positioning pin is movably connected to the sealing mechanism, the spring can drive the sealing mechanism to move along the first positioning pin towards the nozzle, thereby increasing the interaction force between the seal and the nozzle assembly, making the contact between the two tighter, and improving the sealing and moisturizing effect on the nozzle. When the nozzle needs to be used, the drive mechanism drives the sealing mechanism to move downward, facilitating the normal operation of the nozzle. This application controls the up and down movement of the sealing mechanism through the drive mechanism to achieve the positioning of the sealing mechanism and the nozzle. When the sealing mechanism moves upward, the spring mechanism increases the interaction force between the sealing mechanism and the nozzle, thereby improving the sealing and moisturizing effect of the sealing mechanism on the nozzle, thus reducing the occurrence of nozzle clogging and increasing the service life of the nozzle.

[0008] According to some embodiments of the first aspect of this application, the driving mechanism includes a plurality of first connecting members, second connecting members, connecting rods, and a driving member. The first connecting members are symmetrically arranged at both ends of the sealing mechanism. The plurality of first connecting members are fixedly connected to the sealing mechanism. The first connecting members are provided with rotating holes. The second connecting members are elliptical in shape and are disposed in the rotating holes. The connecting rods are sequentially inserted through the plurality of second connecting members and are connected to the second connecting members. The driving member is used to drive the connecting rods to rotate, thereby adjusting the rotation angle of the second connecting members and driving the sealing mechanism to move up and down.

[0009] According to some embodiments of the first aspect of this application, the nozzle sealing and moisturizing assembly further includes a mounting box, the sealing mechanism and the lifting assembly are disposed in the mounting box, and the mounting box is provided with a slide rail to be slidably connected to the nozzle base plate where the nozzle is located via the slide rail.

[0010] According to some embodiments of the first aspect of this application, the driving mechanism further includes two third connecting members, which are disposed on opposite sidewalls of the mounting box. The first connecting member and the sealing mechanism are disposed between the two third connecting members. One end of the connecting rod is rotatably connected to one of the third connecting members, and the other end of the connecting rod passes through the first connecting member and the other third connecting member. The other end of the connecting rod is connected to the driving member, and the third connecting member is provided with a bearing mounting hole. A bearing is disposed in the bearing mounting hole, and the connecting rod passes through the bearing.

[0011] According to some embodiments of the first aspect of this application, the mounting box is provided with a plurality of second positioning pins on the side different from the slide rail, and the mounting box is connected to the nozzle base plate where the nozzle is located through the second positioning pins.

[0012] According to some embodiments of the first aspect of this application, the mounting box is provided with at least one first magnet on the side different from the slide rail, and the mounting box is magnetically connected to a preset position on the nozzle base plate where the nozzle is located via the first magnet.

[0013] According to some embodiments of the first aspect of this application, the sealing mechanism includes a sealing gasket and a gasket mounting member. The sealing gasket has a protrusion for sealing the nozzle, and the gasket mounting member is used to fix the sealing gasket. According to some embodiments of the first aspect of this application, the sealing and moisturizing assembly further includes a moisturizing mechanism. The moisturizing mechanism includes a moisturizing box for storing moisturizing liquid. The moisturizing box has a moisturizing hole, and the sealing mechanism has a vent hole. The moisturizing box is connected to the sealing mechanism through a connecting pipe that connects the moisturizing hole and the vent hole.

[0014] Secondly, this application provides an inkjet printing device, comprising:

[0015] A nozzle assembly, comprising a nozzle body and a nozzle, wherein one end of the nozzle body is connected to the nozzle;

[0016] The nozzle sealing and moisturizing device according to any one of the first aspects, wherein the nozzle sealing and moisturizing device is disposed below the nozzle assembly.

[0017] Since the inkjet printing equipment described in the second aspect uses the printhead sealing and moisturizing device described in any one of the first aspects, it has the beneficial effects of the first aspect of this application.

[0018] According to some embodiments of the second aspect of this application, the nozzle assembly further includes a nozzle base plate, the nozzle body is disposed above the nozzle base plate, the nozzle base plate is provided with a nozzle mounting hole, the nozzle is disposed through the nozzle mounting hole, the nozzle base plate is provided with a plurality of positioning holes and a second magnet, and the nozzle base plate is connected to the mounting box through the positioning holes and the second magnet.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the nozzle sealing and moisturizing device provided in the embodiments of this application;

[0022] Figure 2 This is a top view of the mounting box of the nozzle sealing and moisturizing device provided in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the lifting assembly of the nozzle sealing and moisturizing device provided in the embodiments of this application;

[0024] Figure 4 This is another structural schematic diagram of the lifting assembly of the nozzle sealing and moisturizing device provided in the embodiments of this application;

[0025] Figure 5 This is a side view of the lifting assembly of the nozzle sealing and moisturizing device provided in the embodiments of this application.

[0026] Figure 6 This is a schematic diagram of the printhead base plate of the inkjet printing device provided in the embodiments of this application;

[0027] Figure label:

[0028] Sealing mechanism 110; sealing gasket 111; gasket mounting part 112; vent 113;

[0029] Lifting assembly 200; spring 211; first positioning pin 212; drive mechanism 220; first connecting piece 221; rotating hole 222; second connecting piece 223; connecting rod 224; drive piece 225; third connecting piece 226; bearing 227;

[0030] Humidifying box 310; First connector 320; Second connector 330;

[0031] Mounting box 400; slide rail 410; second positioning pin 420; first magnet 430; sliding handle 440;

[0032] Nozzle assembly 500; Nozzle base plate 510; Nozzle mounting hole 511; Second magnet 512; Positioning hole 513. Detailed Implementation

[0033] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that the embodiments of this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the embodiments of this application with unnecessary detail.

[0034] It should be noted that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0035] It should also be understood that references to "one embodiment" or "some embodiments" in the specification of embodiments of this application mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0036] In the description of this application, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features. It should be understood that directional descriptions, such as "up," "down," "front," "back," "left," and "right," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application.

[0037] In the description of the embodiments of this application, unless otherwise expressly limited, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this application in combination with the specific content of the technical solution.

[0038] Inkjet printers are currently a popular type of printing equipment, and the printhead, as the most important component, has been widely applied along with the rise of inkjet printing. However, printheads are expensive consumables, and their lifespan is determined by various factors, one of which is nozzle clogging caused by ink drying. To solve this problem, traditional sealing methods mostly place a sealing gasket on a moisturizing cap, which is then placed under the printhead to achieve a seal. Traditional moisturizing methods often use a moisturizing fluid inside the sealing gasket, relying on the evaporation of the fluid to keep the nozzle moist and prevent ink drying. However, because the sealing gasket can only hold a small amount of moisturizing fluid, it cannot provide long-term moisturization. Furthermore, due to poor sealing, the external environment affects the evaporation rate of the moisturizing fluid, often resulting in unsatisfactory moisturizing effects, and nozzle clogging in inkjet printers still occurs frequently.

[0039] Based on this, this application provides a printhead sealing and moisturizing device and an inkjet printing device. This application controls the up-and-down movement of the sealing mechanism via a drive mechanism to achieve positioning of the sealing mechanism and the nozzle. When the sealing mechanism moves upward, a spring mechanism increases the force between the sealing mechanism and the printhead, thereby improving the sealing and moisturizing effect of the sealing mechanism on the nozzle, thus reducing nozzle clogging and extending the nozzle's service life.

[0040] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0041] Reference Figures 1 to 6 The nozzle sealing and moisturizing device provided in this application embodiment includes a sealing and moisturizing component and a lifting component 200.

[0042] Among them, the sealing and moisturizing component includes a sealing mechanism 110, which is used to form a sealing space for the nozzle.

[0043] A lifting assembly 200 is disposed below the sealing mechanism 110. The lifting assembly 200 includes a spring mechanism and a drive mechanism 220. The spring assembly 211 includes multiple springs 211 and first positioning pins 212. The multiple first positioning pins 212 are disposed below the sealing mechanism 110 and movably connected to the sealing mechanism 110. The springs 211 are sleeved on the first positioning pins 212. The drive mechanism 220 is used to drive the sealing mechanism 110 to move up and down to adjust the distance between the sealing mechanism 110 and the nozzle. The springs 211 are used to drive the sealing mechanism 110 to move along the first positioning pins 212 toward the nozzle.

[0044] It should be noted that when the nozzle needs to be sealed and moisturized, the nozzle is placed above the sealing mechanism 110, and the drive mechanism 220 is activated. The drive mechanism 220 moves the sealing mechanism 110 upward. When the sealing mechanism 110 moves to the preset position, since the top of the first positioning pin 212 is movably connected to the sealing mechanism 110, the spring 211 can drive the sealing mechanism 110 to move along the first positioning pin 212 towards the nozzle, thereby increasing the interaction force between the seal and the nozzle assembly 500, making the contact between the two tighter, and improving the sealing and moisturizing effect on the nozzle. When the nozzle needs to be used, the drive mechanism 220 drives the sealing mechanism 110 to move downward, facilitating the normal operation of the nozzle. This application controls the up and down movement of the sealing mechanism 110 through the drive mechanism 220 to achieve the positioning of the sealing mechanism 110 and the nozzle. When the sealing mechanism 110 moves upward, the spring 211 assembly increases the interaction force between the sealing mechanism 110 and the nozzle, thereby improving the sealing and moisturizing effect of the sealing mechanism 110 on the nozzle, thus reducing the occurrence of nozzle clogging and increasing the service life of the nozzle.

[0045] It should be noted that the first positioning pin 212 is movably connected to the sealing mechanism 110, and the drive mechanism 220 and the spring mechanism can drive the sealing mechanism to move up and down within a certain range along the first positioning pin 212.

[0046] It should be noted that when sealing and moisturizing, under the action of spring 211, the sealing mechanism 110, i.e. the sealing gasket 111, is pushed upward and makes full contact with the nozzle assembly 500, thus achieving a good sealing effect.

[0047] It should be noted that the sealing mechanism 110 includes at least a sealing gasket 111, which is used to seal the nozzle, so that the nozzle maintains a good sealing and moisturizing effect to reduce the drying of the ink in the nozzle.

[0048] Understandably, referring to Figure 4 and Figure 6 The driving mechanism 220 includes multiple first connecting members 221, second connecting members 223, connecting rods 224, and a driving member 225. The multiple first connecting members 221 are symmetrically arranged at both ends of the sealing mechanism 110. The first connecting members 221 are fixedly connected to the sealing mechanism 110. The first connecting members 221 are provided with rotating holes 222. The second connecting members 223 are elliptical and are disposed in the rotating holes 222. The connecting rods 224 are sequentially inserted through the multiple second connecting members 223 and are connected to the second connecting members 223. The driving member 225 is used to drive the connecting rods 224 to rotate, so as to adjust the rotation angle of the second connecting members 223, thereby driving the sealing mechanism 110 to move up and down.

[0049] It should be noted that when sealing and moisturizing, the nozzle assembly 500 is placed above the sealing mechanism 110, and the drive component 225 is activated. The drive component 225 drives the connecting rod 224 to rotate, thereby adjusting the rotation angle of the second connecting component 223. Since the second connecting component 223 is elliptical, when the part of the second connecting component 223 that is farther from the axis of the connecting rod 224 is facing the sealing mechanism 110, the sealing mechanism 110 moves upward. When the sealing mechanism 110 moves to the preset position, the spring 211 drives the sealing mechanism 110 to move towards the nozzle, increasing the force between it and the nozzle assembly 500, making the contact between the two tighter and improving the sealing and moisturizing effect on the nozzle. When the part of the second connecting component 223 that is closer to the axis of the connecting rod 224 is away from the sealing mechanism 110, the sealing mechanism 110 moves downward, which is deviates from the normal operation of the nozzle assembly 500. This application controls the up-and-down movement of the sealing mechanism 110 by adjusting the rotation angle of the second connector 223. When the sealing mechanism 110 moves upward, the force between the sealing mechanism 110 and the nozzle assembly 500 is increased, thereby improving the sealing and moisturizing effect of the sealing mechanism 110 on the nozzle, thus reducing the occurrence of nozzle clogging and increasing the service life of the nozzle.

[0050] Understandably, referring to Figure 1 The nozzle sealing and moisturizing assembly also includes a mounting box 400, a sealing mechanism 110 and a lifting assembly 200 disposed within the mounting box 400. The mounting box 400 is provided with a slide rail 410 to be slidably connected to the nozzle base plate 510 where the nozzle is located.

[0051] It should be noted that the installation box 400 is more convenient and quick to set up. When it is necessary to seal and moisturize the nozzle, the installation box 400 can be moved directly to the bottom of the nozzle assembly 500 via the slide rail 410. The sealing and moisturizing components and the lifting components 200 inside the installation box 400 can then seal and moisturize the nozzle.

[0052] It should be noted that one end of the first positioning pin 212 is fixedly connected to the sealing mechanism 110, i.e., the rubber gasket mounting part 112, by a screw, and the other end of the first positioning pin 212 is fixed inside the mounting box 400 by a screw. In addition, the hole where the sealing mechanism 110 connects to the first positioning pin 212 is unthreaded, and the screw connecting the first positioning pin 212 to the sealing mechanism 110 has a certain width. Therefore, the sealing mechanism 110 can slide along the first positioning pin 212 within a specified range, which is determined by the width of the screw.

[0053] Understandably, referring to Figure 2 and Figure 4The drive mechanism 220 also includes two third connectors 226, which are disposed on two opposite side walls of the mounting box 400. The first connector 221 and the sealing mechanism 110 are disposed between the two third connectors 226. One end of the connecting rod 224 is rotatably connected to one of the third connectors 226, and the other end of the connecting rod 224 passes through the first connector 221 and the other third connector 226. The other end of the connecting rod 224 is connected to the drive component 225. The third connector 226 is provided with a bearing 227 mounting hole, and a bearing 227 is disposed in the bearing 227 mounting hole. The connecting rod 224 passes through the bearing 227.

[0054] It should be noted that the drive mechanism 220 also includes two third connecting members 226. The two third connecting members 226 are fixed on two opposite side walls of the mounting box 400. The first connecting member 221 and the sealing mechanism 110 are disposed between the third connecting members 226. One end of the connecting rod 224 is rotatably connected to one of the third connecting members 226, that is, this connection relationship has no effect on the rotation of the connecting rod 224. The other end of the connecting rod 224 passes through multiple first connecting members 221 and another third connecting member 226 and is disposed outside the mounting box 400. The other end of the connecting rod 224 is connected to the drive member 225. Outside the mounting box 400, the rotation angle of the second connecting member 223 can be controlled by controlling the drive member 225, which is more convenient and faster.

[0055] It should be noted that the drive component 225 is set as a hand-cranked rotating head, and the distance of the sealing mechanism 110 moving up and down can be controlled by manually cranking the hand-cranked rotating head.

[0056] It should be noted that the drive unit 225 can also be set as a stepper motor, and the current position of the sealing mechanism 110 can be detected by the built-in program of the stepper motor.

[0057] It should be noted that the first connector 221 is a square part with two countersunk screw holes, and the rubber gasket mounting part 112 is provided with corresponding threaded holes. The first connector 221 and the rubber gasket mounting part 112, i.e. the sealing mechanism 110, can be fixed by screws.

[0058] It should be noted that the second connecting member 223 is connected to the connecting rod 224 by a kimming screw, and the driving member 225 is also connected to the connecting rod 224 by a kimming screw. When the driving member 225 is rotated, the connecting rod 224 and the second connecting member 223 can rotate accordingly.

[0059] Understandably, referring to Figure 5 The third connector 226 is provided with a bearing 227 mounting hole, and a bearing 227 is provided in the bearing 227 mounting hole. The connecting rod 224 passes through the bearing 227.

[0060] It should be noted that bearing 227 is a component that fixes and reduces the coefficient of friction of the load during mechanical transmission. In other words, it is a component used to reduce the coefficient of friction during power transmission and to keep the center position of the shaft fixed. The setting of bearing 227 makes the rotation of connecting rod 224 smoother.

[0061] Understandably, referring to Figure 3 The mounting box 400 has multiple second positioning pins 420 on one side that is different from the slide rail 410. The mounting box 400 is connected to the nozzle base plate 510 where the nozzle is located through the second positioning pins 420.

[0062] It should be noted that the second positioning pin 420 is provided to facilitate precise positioning between the sealing mechanism 110 and the nozzle assembly 500. When sealing and moisturizing, the mounting box 400 is pushed along the sliding direction of the slide rail 410 until the second positioning pin 420 on the moisturizing cover is inserted into the positioning hole 513. At this time, the sealing mechanism 110 in the mounting box 400 is located directly below the nozzle, which facilitates the subsequent movement of the sealing mechanism 110 by the lifting assembly 200.

[0063] Understandably, referring to Figure 3 The mounting box 400 is provided with at least one first magnet 430 on the side different from the slide rail 410. The mounting box 400 is magnetically connected to the nozzle base plate 510 where the nozzle is located through the first magnet 430.

[0064] It should be noted that the placement of the first magnet 430 provides another layer of protection for determining the position between the nozzle assembly 500 and the sealing mechanism 110.

[0065] It should be noted that in actual use, the sliding mounting box 400 positions the sealing mechanism 110 below the nozzle. At this time, the sealing mechanism 110 is in a lowered state. Once the second positioning pin 420 on the moisturizing cover enters the positioning hole 513 and the moisturizing cover is attracted to the magnet, it proves that the sealing position is correct. Rotate the hand to turn the rotating head, causing the sealing mechanism 110 to rise and correctly seal below the nozzle. In addition, under the action of the spring 211 and the lifting mechanism, the sealing gasket 111 is pushed up, while the nozzle is pressed down. The interaction force makes the sealing effect good.

[0066] Understandably, referring to Figure 3 The sealing mechanism 110 includes a sealing gasket 111 and a gasket mounting member 112. The sealing gasket 111 is provided with a protrusion for sealing the nozzle, and the gasket mounting member 112 is used to fix the sealing gasket 111.

[0067] It should be noted that the sealing gasket 111 on the side close to the nozzle has protrusions around its perimeter. When the sealing mechanism 110 seals with the nozzle, the protrusions are located between the nozzle and the bottom edge of the nozzle body to ensure a precise seal on the nozzle.

[0068] It should be noted that the side of the sealing gasket 111 that connects with the gasket mounting component 112 is provided with multiple cylindrical rubber heads, and the gasket mounting component 112 is provided with multiple mounting grooves corresponding to the cylindrical rubber heads, so as to realize the fixed installation of the sealing gasket 111. In addition, due to the limitations of its own material, the sealing gasket 111 is not convenient to be directly raised or lowered. The gasket mounting component 112 is designed to facilitate the raising and lowering of the sealing gasket 111.

[0069] It should be noted that the size of the gasket mounting part 112 is larger than that of the sealing gasket 111 in order to facilitate the installation of the sealing gasket 111.

[0070] It should be noted that the shape of the sealing gasket 111 can be set as needed. In this embodiment, the sealing gasket 111 is set as a rectangle.

[0071] Understandably, referring to Figure 3 The sealing and moisturizing component also includes a moisturizing mechanism, which includes a moisturizing box 310 for storing moisturizing liquid. The moisturizing box 310 has a moisturizing hole, and the sealing mechanism 110 is provided with a vent hole 113. The moisturizing box 310 is connected to the sealing mechanism 110 through a connecting pipe that connects the moisturizing hole and the vent hole 113.

[0072] It should be noted that the sealing gasket 111 is provided with a vent hole 113, and the gasket mounting part 112 is also provided with a through hole. The through hole is connected to the moisture-retaining hole through an air pipe, and the vent hole 113 is connected to the through hole on the gasket mounting part 112, thereby making the moisture-retaining hole and the vent hole 113 connected.

[0073] It should be noted that the moisturizing mechanism also includes a first connector 320 and a second connector 330. The first connector 320 is located on one side of the moisturizing box 310, and the second connector 330 is located on one side of the rubber pad mounting part 112. The sealing rubber pad 111 is provided with a vent hole 113. The second connector 330 is connected to the vent hole 113, and the first connector 320 and the second connector 330 are connected through an air pipe.

[0074] It should be noted that when the nozzle needs to be sealed, the first connector 320 and the second connector 330 are opened, so that the humidification box 310 is connected to the vent 113 at the sealing gasket 111. The humidifying liquid in the humidification box 310 can moisturize the ink at the nozzle and reduce its drying. In addition, the sealing mechanism 110 completely seals the nozzle surface of the printhead, isolating the air at the nozzle from the outside air. Since the nozzle is only connected to the humidification box 310, the air environment at the nozzle is the same as the air environment in the humidification box 310. No matter how the external environment changes, the nozzle can be moisturized, which greatly reduces the impact of the external environment on the printhead's moisturization.

[0075] It should be noted that the moisturizing mechanism provided in this application embodiment does not have any requirements on the size of the moisturizing box 310. The moisturizing box 310 can hold enough moisturizing liquid to ensure that the nozzle is in a moist state.

[0076] It should be noted that both the first connector 320 and the second connector 330 are bent pagoda connectors. The first connector 320 is connected to the humidification box 310 by threads, and the second connector 330 is connected to the rubber pad mounting part 112 by a threaded structure.

[0077] It should be noted that a sliding handle 440 is provided on the outside of the mounting box 400. The sliding handle 440 is threaded to the outside of the mounting box 400, and the sliding handle 440 facilitates the sliding of the mounting box 400.

[0078] It should be noted that, referring to Figures 1 to 6The nozzle sealing and moisturizing device provided in this application embodiment has multiple second positioning pins 420 on the moisturizing cover of the mounting box 400. The mounting box 400 is connected to the nozzle base plate 510 where the nozzle is located through the second positioning pins 420, which can ensure the accuracy of the position of the mounting box 400. In addition, this application provides a first magnet 430 on the moisturizing cover. When the moisturizing cover is closed and the first magnet 430 and the second magnet 512 on the nozzle base plate 510 are attracted, the moisturizing cover and the nozzle base plate 510 are tightly attached. Through the design of the second positioning pins 420 and the magnetic attraction design, the precise positioning between the sealing mechanism 110 and the nozzle can be achieved, which is more convenient and faster. This embodiment of the application provides a sealing gasket 111, i.e., a sealing mechanism 110, below the nozzle. The sealing gasket 111 is controlled to rise and fall by a drive mechanism 220. When the moisturizing cover is closed, the sealing gasket 111 is rotated up so that it completely covers the nozzle, thereby achieving a sealing effect on the nozzle. Due to the second positioning pin 420 and the magnetic design, the sealing position is accurately positioned, reducing the occurrence of poor sealing effect caused by improper sealing position. At the same time, a spring 211 is provided below the sealing gasket 111. Since the top of the first positioning pin 212 is movably connected to the sealing mechanism 110, the spring 211 can drive the sealing mechanism 110 to move along the first positioning pin 212 toward the nozzle. Under the action of the spring mechanism, the nozzle presses against the sealing gasket 111, so that the sealing gasket 111 completely seals and covers the bottom of the nozzle, further enhancing the sealing performance of the nozzle. Finally, this application features an independent moisturizing box 310 containing moisturizing liquid, which is connected to the vent 113 on the sealing gasket 111. When the nozzle is in a sealed state, the moisturizing liquid in the moisturizing box 310 evaporates, making the air environment at the nozzle consistent with that inside the moisturizing liquid box, thus avoiding the influence of the external environment on the nozzle and ensuring a good moisturizing effect. At the same time, due to the good sealing performance of the sealing mechanism 110, the moisturizing liquid is not easily dispersed into the external environment, ensuring the effective use of the moisturizing liquid, reducing waste, and improving the service life of the nozzle.

[0079] On the other hand, this application provides an inkjet printing device, including a printhead assembly 500 and the aforementioned printhead sealing and moisturizing device.

[0080] The nozzle assembly 500 includes a nozzle body and a nozzle, with one end of the nozzle body connected to the nozzle.

[0081] The nozzle sealing and moisturizing device is located below the nozzle assembly 500.

[0082] Understandably, referring to Figure 2The nozzle assembly 500 also includes a nozzle base plate 510, with the nozzle body disposed above the nozzle base plate 510. The nozzle base plate 510 is provided with a nozzle mounting hole 511, through which the nozzle is disposed. The nozzle base plate 510 is provided with multiple positioning holes 513 and a second magnet 512. The nozzle base plate 510 is connected to the mounting box 400 through the positioning holes 513 and the second magnet 512.

[0083] It should be noted that the positioning hole 513 is set to correspond with the second positioning pin 420, and the first magnet 430 is set to correspond with the second magnet 512.

[0084] It should be noted that the inkjet printing device provided in this application embodiment includes a printhead assembly 500 and a printhead sealing and moisturizing device. The moisturizing cover of the mounting box 400 is provided with a plurality of second positioning pins 420. The mounting box 400 is connected to the printhead base plate 510 where the nozzle is located through the second positioning pins 420, which can ensure the accuracy of the position of the mounting box 400. In addition, this application provides a first magnet 430 on the moisturizing cover. When the moisturizing cover is closed and the first magnet 430 and the second magnet 512 on the printhead base plate 510 are attracted, the moisturizing cover is tightly attached to the printhead base plate 510. Through the design of the second positioning pins 420 and the magnetic attraction design, the precise positioning between the sealing mechanism 110 and the nozzle can be achieved, which is more convenient and faster. This embodiment of the application provides a sealing gasket 111, i.e., a sealing mechanism 110, below the nozzle. The sealing gasket 111 is controlled to rise and fall by a drive mechanism 220. When the moisturizing cover is closed, the sealing gasket 111 is rotated up so that it completely covers the nozzle, thereby achieving a sealing effect on the nozzle. Due to the second positioning pin 420 and the magnetic design, the sealing position is accurately positioned, reducing the occurrence of poor sealing effect caused by improper sealing position. At the same time, a spring 211 is provided below the sealing gasket 111. Since the top of the first positioning pin 212 is movably connected to the sealing mechanism 110, the spring 211 can drive the sealing mechanism 110 to move along the first positioning pin 212 toward the nozzle. Under the action of the spring mechanism, the nozzle presses against the sealing gasket 111, so that the sealing gasket 111 completely seals and covers the bottom of the nozzle, further enhancing the sealing performance of the nozzle. Finally, this application includes an independent moisturizing box 310 containing moisturizing liquid, which communicates with the vent 113 on the sealing gasket 111. When the nozzle is in a sealed state, the moisturizing liquid in the moisturizing box 310 evaporates, ensuring that the air environment at the nozzle is consistent with that inside the moisturizing liquid box. This avoids the influence of the external environment on the nozzle, ensuring a good moisturizing effect. Simultaneously, due to the excellent sealing performance of the sealing mechanism 110, the moisturizing liquid is not easily dissipated into the external environment, ensuring the effective use of the moisturizing liquid, reducing waste, and increasing the nozzle's lifespan. The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless there is conflict.

Claims

1. A nozzle sealing and humidification device, characterized in that, include: A sealing and moisturizing assembly, the sealing and moisturizing assembly including a sealing mechanism for forming a sealing space for a nozzle; A lifting assembly is disposed below the sealing mechanism. The lifting assembly includes a spring mechanism and a drive mechanism. The spring mechanism includes multiple springs and a first positioning pin. The multiple first positioning pins are disposed below the sealing mechanism and are movably connected to the sealing mechanism. The springs are sleeved on the first positioning pins. The drive mechanism is used to drive the sealing mechanism to move up and down to adjust the distance of the sealing mechanism relative to the nozzle. The springs are used to drive the sealing mechanism to move along the first positioning pins toward the nozzle. The nozzle sealing and moisturizing device further includes a mounting box. The sealing mechanism and the lifting assembly are disposed in the mounting box. The mounting box is provided with a slide rail to be slidably connected to the nozzle base plate where the nozzle is located. At least one first magnet is provided on the side of the mounting box different from the slide rail, and at least one second magnet is provided on the nozzle base plate where the nozzle is located. The mounting box is magnetically connected to the nozzle base plate through the first magnet and the second magnet. The mounting box has multiple second positioning pins on the side different from the slide rail, and the nozzle base plate has multiple positioning holes. The mounting box is connected to the nozzle base plate through the second positioning pins and the positioning holes. The driving mechanism includes multiple first connectors, second connectors, connecting rods, and a driving component. The multiple first connectors are symmetrically arranged at both ends of the sealing mechanism. The first connectors are fixedly connected to the sealing mechanism and have rotating holes. The second connectors are elliptical in shape and are disposed within the rotating holes. The connecting rods are sequentially inserted through the multiple second connectors and are connected to the second connectors. The driving component drives the connecting rods to rotate, thereby adjusting the rotation angle of the second connectors and driving the sealing mechanism to move up and down.

2. The nozzle sealing and moisturizing device according to claim 1, characterized in that, The driving mechanism further includes two third connecting members, which are disposed on opposite side walls of the mounting box. The first connecting member and the sealing mechanism are disposed between the two third connecting members. One end of the connecting rod is rotatably connected to one of the third connecting members, and the other end of the connecting rod passes through the first connecting member and the other third connecting member. The other end of the connecting rod is connected to the driving member. The third connecting member is provided with a bearing mounting hole, in which a bearing is disposed. The connecting rod passes through the bearing.

3. The nozzle sealing and moisturizing device according to claim 1, characterized in that, The sealing mechanism includes a sealing gasket and a gasket mounting component. The sealing gasket has a protrusion for sealing the nozzle, and the gasket mounting component is used to fix the sealing gasket.

4. The nozzle sealing and moisturizing device according to claim 1, characterized in that, The sealing and moisturizing component further includes a moisturizing mechanism, which includes a moisturizing box for storing moisturizing liquid. The moisturizing box has a moisturizing hole, and the sealing mechanism has a vent hole. The moisturizing box is connected to the sealing mechanism through a connecting pipe that connects the moisturizing hole and the vent hole.

5. An inkjet printing device, characterized in that, include: A nozzle assembly, comprising a nozzle body and a nozzle, wherein one end of the nozzle body is connected to the nozzle; The nozzle sealing and moisturizing device as described in any one of claims 1 to 4, wherein the nozzle sealing and moisturizing device is disposed below the nozzle assembly.

6. The inkjet printing device according to claim 5, characterized in that, The nozzle assembly also includes a nozzle base plate, the nozzle body is disposed above the nozzle base plate, the nozzle base plate is provided with a nozzle mounting hole, the nozzle is disposed through the nozzle mounting hole, the nozzle base plate is provided with multiple positioning holes and a second magnet, and the nozzle base plate is connected to the mounting box through the positioning holes and the second magnet.

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