CN219618755U - Front-end ink cartridge and ink jet printing apparatus - Google Patents

Abstract

The utility model belongs to the technical field of ink-jet printing, and particularly relates to a front-end ink box and ink-jet printing equipment. The front-end ink box comprises a main body, wherein at least one accommodating cavity is arranged in the main body; the first pipe connecting opening is positioned at the top of the main body, is communicated with the accommodating cavity and is used for being connected with the ink box through the ink pipe; the first interface is positioned at the bottom of the main body, is communicated with the accommodating cavity and is used for being directly connected with the spray head; the second connecting pipe opening is positioned on the side face of the main body, is communicated with the accommodating cavity and is used for being connected with the ink box through the ink pipe. The utility model can simplify the pipeline system between the front-end ink box and the spray head, improve the fluency of ink flow and effectively avoid the condition of air retention.

Description

Front-end ink cartridge and ink jet printing apparatus

Technical Field

The utility model relates to the technical field of ink-jet printing, in particular to a front-end ink box and ink-jet printing equipment.

Background

An inkjet printhead is a device that ejects tiny droplets of ink by squeezing the ink in a nozzle channel, and a stable ink supply is particularly important for the inkjet printhead to properly eject ink. Most of the currently used inkjet printheads use siphoning or negative pressure to control the pressure of the ink in the nozzle. The ink supply device generally includes a front-end ink tank and a rear-end ink tank. One end of the front ink box is connected with an ink inlet or an ink return opening of the ink jet printing head, and the other end of the front ink box is connected with the rear ink box. At present, the front-end ink box is usually connected with the spray heads by using ink pipes, but the front-end ink box and the spray heads are connected in a mode that a plurality of spray heads with a plurality of interfaces can lead to very complex pipelines, and the connection firmness is not beneficial to the plugging and unplugging of the pipelines, so that a plurality of inconveniences are caused for later maintenance. In order to ensure smooth supply of ink to the nozzle, the diameter of the pipeline and the smoothness of the interior of the pipeline can influence the smoothness of ink supply. When liquid flows through a section of pipeline, shearing stress is generated between the inner wall of the pipeline and the liquid, and the shearing stress is in direct proportion to the viscosity of the liquid, the tension of the liquid, the surface smoothness of the inner wall of the pipeline and the diameter of the pipeline, so that the smoothness of liquid supply needs to be ensured when the nozzle ejects a large amount of ink. Therefore, the air generated during the operation of the spray head is easy to stay in the pipeline by adopting a single-connection pipe mode, and particularly, the pipeline is more serious under the condition of buckling or insufficient inner diameter of the pipeline.

Disclosure of Invention

In view of the above, the embodiment of the utility model provides a front-end ink box and an inkjet printing device, which are used for solving the technical problems that the structure of the front-end ink box is complex in pipeline, the flow of ink is not smooth, and air stagnation is easy to occur when the structure of the front-end ink box is connected with a nozzle.

The technical scheme adopted by the utility model is as follows:

in a first aspect, the present utility model provides a front-end ink cartridge comprising:

a main body provided with at least one accommodating cavity;

the first pipe connecting opening is positioned at the top of the main body, is communicated with the accommodating cavity and is used for being connected with the ink box through the ink pipe;

the first interface is positioned at the bottom of the main body, is communicated with the accommodating cavity and is used for being directly connected with the spray head;

the second connecting pipe opening is positioned on the side face of the main body, is communicated with the accommodating cavity and is used for being connected with the ink box through the ink pipe.

Preferably, the first nozzle and the second nozzle are each adapted to be connected to a first ink cartridge.

Preferably, the first nozzle and the second nozzle are both ink inlet nozzles, or

The first nozzle is an exhaust nozzle, and the second nozzle is an ink inlet nozzle;

preferably, the first nozzle is connected to the first ink cartridge, and the second nozzle is connected to the second ink cartridge.

Preferably, the first nozzle is a circulating ink inlet nozzle, and the second nozzle is a circulating ink outlet nozzle.

Preferably, the front-end ink box further comprises a first pipe joint, the first pipe joint comprises a first connecting portion and a second connecting portion, the first connecting portion is connected with the second connecting port, the second connecting portion is communicated with the first connecting portion, and the axis direction of the second connecting portion is perpendicular to the axis direction of the first connecting portion.

Preferably, the front-end ink box further comprises a second pipe joint, the second pipe joint comprises a third connecting part and a fourth connecting part, the third connecting part is connected with the first interface pipe, and the axial directions of the third connecting part and the fourth connecting part are the same.

Preferably, the diameter of the first nozzle is larger than the diameter of the second nozzle and the diameter of the first port.

Preferably, the front-end ink box further comprises a sealing ring, the sealing ring is arranged at the position where the first interface is spliced with the spray head, the first connecting pipe opening is connected with the rear-end ink box through the ink pipe, the axial direction of the first connecting pipe opening is parallel to the axial direction of the accommodating cavity, the axial direction of the second connecting pipe opening is perpendicular to the axial direction of the accommodating cavity, the front-end ink box comprises a top wall, a bottom wall, a first side wall, a second side wall, a third side wall and a fourth side wall which are connected end to end in sequence, the top wall, the bottom wall, the first side wall, the second side wall, the third side wall and the fourth side wall enclose a main body of the front-end ink box, the first side wall and the second side wall are oppositely arranged, the second pipe opening is positioned on the first side wall, a first flange and a second flange are respectively arranged on the third side wall and the fourth side wall, one end of the first flange, which is far away from the first side wall, and the second end, which is far away from the first notch is arranged.

In a second aspect, the present utility model further provides an inkjet printing apparatus, including a rear ink cartridge, a nozzle, and the front ink cartridge according to the first aspect, wherein the front ink cartridge is connected to the nozzle and the rear ink cartridge, respectively.

The beneficial effects are that: the front-end ink box and the ink-jet printing equipment directly connect the first interface with the spray head, so that a connecting pipeline is not required to be additionally arranged between the first interface and the spray head, and the complexity of the pipeline is greatly simplified. Because the first interface and the spray head are directly connected, a pipeline connected in the middle is omitted, and therefore the condition that air generated by the spray head stays in the middle pipeline is avoided. Since the ink omits the process of flowing in the intermediate line, the flow of ink between the first interface and the ejection head is also smoother. Because the front-end ink box is directly connected with the spray head, the middle connecting part is omitted, and therefore the front-end ink box and the spray head are convenient to directly assemble and disassemble. Therefore, the reliability of connection between the front-end ink box and the spray head can be improved, and the front-end ink box can be maintained conveniently.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings required to be used in the embodiments of the present utility model will be briefly described, and it is within the scope of the present utility model to obtain other drawings according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic three-dimensional structure of a front-end ink cartridge of the present utility model;

FIG. 2 is a schematic view showing an exploded structure of a front-end ink cartridge according to the present utility model;

FIG. 3 is a cross-sectional view of the front-end cartridge of the present utility model;

FIG. 4 is a schematic three-dimensional structure of the front-end ink cartridge and the nozzle of the present utility model;

FIG. 5 is a schematic diagram showing an exploded structure of the front-end ink cartridge and the nozzle of the present utility model;

FIG. 6 is a schematic three-dimensional view of a first pipe joint according to the present utility model;

FIG. 7 is a schematic three-dimensional structure of a second pipe joint according to the present utility model;

FIG. 8 is a schematic three-dimensional structure of the front-end ink cartridge, the rear-end ink cartridge and the nozzle according to the present utility model;

fig. 9 is a schematic diagram showing the exploded structure of the front-end ink cartridge, the rear-end ink cartridge and the nozzle in the present utility model.

Parts and numbers in the figure:

front-end ink cartridge 100, main body 1, top wall 11, bottom wall 12, first side wall 13, second side wall 14, third side wall 15, fourth side wall 16, first flange 17, first notch 171, second flange 18, second notch 181, accommodation chamber 2, first nozzle 3, first interface 4, second nozzle 5, first pipe joint 6, first connection portion 61, second connection portion 62, second pipe joint 7, third connection portion 71, fourth connection portion 72, seal ring 8, rear-end ink cartridge 200, head 300, and plug 301.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. If not conflicting, the embodiments of the present utility model and the features of the embodiments may be combined with each other, which are all within the protection scope of the present utility model.

Example 1

As shown in fig. 1 and 2, the present utility model provides a front-end ink cartridge 100, the front-end ink cartridge 100 including a main body 1, a first nozzle 3, a first interface 4, and a second nozzle 5.

As shown in fig. 3, at least one accommodating cavity 2 is arranged on the main body 1; wherein the receiving chamber 2 is mainly used for storing ink. The number of the accommodating chambers 2 on the main body 1 may be one or a plurality. When the number of the accommodating cavities 2 is more than 1, the accommodating cavities 2 are mutually independent and are not communicated with each other. When the structure of the plurality of accommodating cavities 2 is adopted, one accommodating cavity 2 correspondingly stores one ink, and the plurality of accommodating cavities 2 can correspondingly store a plurality of different inks.

The first pipe connecting opening 3 in this embodiment is disposed at the top of the main body 1, one end of the first pipe connecting opening 3 is communicated with the accommodating cavity 2, the other end is connected with an ink pipe, and one end of the ink pipe far away from the first pipe interface is connected with the ink box, so that the first pipe interface is indirectly connected with the ink box through the ink pipe. Wherein the cartridge is a back end cartridge 200.

The second nozzle 5 in this embodiment is located at a side of the main body 1, and the second nozzle 5 is in communication with the accommodating cavity 2, and the second nozzle is used for connecting with the ink cartridge through an ink tube. One end of the second pipe joint in the embodiment is communicated with the accommodating cavity 2, the other end of the second pipe joint is connected with the ink pipe, and one end of the ink pipe far away from the second pipe joint is connected with the ink box, so that the second pipe joint is indirectly connected with the ink box through the ink pipe. Wherein the cartridge is a back end cartridge 200.

In this embodiment, the first interface 4 is disposed at the bottom of the main body 1, the first interface 4 is communicated with the accommodating cavity 2, and the first interface 4 is used for being directly connected with the spray head 300; the front-end ink cartridge 100 of the present embodiment directly connects the first interface 4 and the head 300 without passing through any other intermediate line. This eliminates the need for additional connecting lines between the first port 4 and the spray head 300, thereby greatly simplifying the complexity of the lines. Because the first connector 4 and the spray head 300 are directly connected, a pipeline connected in the middle is omitted, and therefore, the condition that air generated by the spray head 300 stays in the middle pipeline is avoided. The flow of ink between the first port 4 and the head 300 is also smoother, since the process of flowing in the intermediate line is omitted. In specific implementation, the first interface 4 and the nozzle 300 can be directly spliced, and the front-end ink box 100 and the nozzle 300 can be directly disassembled and assembled through simple plugging, so that the reliability of connection between the front-end ink box 100 and the nozzle 300 can be improved, and the front-end ink box 100 can be conveniently maintained.

The number of the first interfaces 4 of the bottom plate can be set according to the interfaces and the color configuration scheme of the spray head 300, and the first interfaces 4 of the bottom part and the accommodating cavity 2 of the front-end ink cartridge 100 also have a corresponding relationship.

As shown in fig. 4, the first interface 4 and the first nozzle 3 are respectively disposed at the top and bottom of the front-end ink cartridge 100, so that the front-end ink cartridge 100 can be conveniently connected to the rear-end ink cartridge 200 through the first nozzle 3, and the front-end ink cartridge 100 can be directly connected to the nozzle 300 through the first interface 4, so that the front-end ink cartridge 100 and the nozzle are not interfered with each other.

As shown in fig. 8, as one of the embodiments, the first nozzle 3 and the second nozzle 5 are used for connection with the first ink cartridge in this example. I.e. the first nozzle 3 and the second nozzle 5 are connected to the same cartridge.

In the case that the first nozzle 3 and the second nozzle 5 are connected with the same ink cartridge, the first nozzle 3 and the second nozzle 5 are both ink inlet nozzles. In this case, the first tube port at the top of the front-end ink cartridge 100 and the second tube port at the side lower are used for ink feeding, and in this way, the ink feeding speed can be significantly increased.

Under the condition that the first nozzle 3 and the second nozzle 5 are connected with the same ink box, the first nozzle 3 is an exhaust nozzle, and the second nozzle 5 is an ink inlet nozzle; i.e., the first tube interface at the top of the front-end cartridge 100 is used for venting air, while the second tube interface at the side below is used for ink intake. By adopting the mode, the gas generated by the spray head 300 can be rapidly and effectively discharged, and the gas is prevented from being detained in the pipeline.

In the case that the first nozzle 3 and the second nozzle 5 are connected with the same ink cartridge, the first nozzle 3 is a circulating ink inlet nozzle, and the second nozzle 5 is a circulating ink outlet nozzle. With the foregoing structure, a head-to-head cycle can be formed to clean the showerhead 300. Ink enters the front-end ink cartridge 100 from the first nozzle 3 at the top, and then flows out of the front-end ink cartridge 100 from the second nozzle 5 at the side.

As one of the embodiments, the first nozzle 3 is connected to the first ink cartridge and the second nozzle 5 is connected to the second ink cartridge in this example. I.e. the first tube interface and the second tube interface are connected to two different cartridges, respectively.

In the case that the first nozzle 3 and the second nozzle 5 are respectively connected with two different ink cartridges, the first nozzle 3 is a circulating ink inlet nozzle, and the second nozzle 5 is a circulating ink outlet nozzle. With the foregoing structure, a head-to-head cycle can be formed to clean the showerhead 300. Ink enters the front-end ink cartridge 100 from the first nozzle 3 at the top, and then flows out of the front-end ink cartridge 100 from the second nozzle 5 at the side.

As shown in fig. 6, as an alternative but advantageous embodiment, the front-end ink cartridge 100 further includes a first pipe joint 6 in this embodiment, the first pipe joint 6 includes a first connection portion 61 and a second connection portion 62, the first connection portion 61 is connected to the second pipe joint 5, the second connection portion 62 communicates with the first connection portion 61, and an axial direction of the second connection portion 62 is perpendicular to an axial direction of the first connection portion 61. The first pipe joint 6 of the present embodiment adopts two mutually perpendicular connection parts, so that the first pipe joint 6 can be connected with the second pipe joint 5 from the side of the front-end ink cartridge 100 and is connected with the rear-end ink cartridge 200 after being converted into a vertically upward direction.

As shown in fig. 7, as an alternative but advantageous embodiment, the front-end ink cartridge 100 further includes a second pipe joint 7 in this embodiment, the second pipe joint 7 includes a third connection portion 71 and a fourth connection portion 72, the third connection portion 71 is connected to the first pipe joint 3, and the axial directions of the third connection portion 71 and the fourth connection portion 72 are the same. Wherein the fourth connection portion 72 may be connected to the ink cartridge through an ink tube. Since the axial directions of the third connection portion 71 and the fourth connection portion 72 are the same, the second tube joint 7 can connect the first tube joint 3 and the ink tube communicating with the rear-end ink cartridge 200 from the top of the front-end ink cartridge 100.

As an alternative but advantageous embodiment, the diameter of the first mouthpiece 3 is in this example larger than the diameter of the second mouthpiece 5 and the diameter of the first mouthpiece 4. In this embodiment, a large-caliber ink tube is disposed on top of the front-end ink cartridge 100, and the upper part of the ink tube is connected with the ink cartridge. The air generated by the printing head can be well discharged through the printing head, and the ink supply can be supplemented when no air exists.

As an alternative but advantageous embodiment, as shown in fig. 5, the front-end cartridge 100 further includes a sealing ring 8 in this embodiment, where the sealing ring 8 is disposed at a position where the first port 4 is plugged with the nozzle 300. When the front-end ink box 100 and the spray head 300 are installed, the plug connector 301 above the spray head 300 can be inserted into the corresponding first interface 4, and the sealing ring 8 is sleeved on the plug connector 301, so that the sealing ring 8 is tightly pressed on the first interface 4 and the spray head 300 directly, and the plug connection position of the first interface 4 and the plug connector 301 is reliably sealed.

In this embodiment, the first pipe connecting port 3 is connected to the rear-end ink cartridge 200 through an ink pipe, the axial direction of the first pipe connecting port is parallel to the axial direction of the accommodating cavity 2, and the direction of the second pipe connecting port is perpendicular to the axial direction of the accommodating cavity 2.

The first nozzle 3 on the top of the front-end ink cartridge 100 is arranged parallel to the axial direction of the accommodating cavity 2, which is beneficial to smooth ink flowing between the accommodating cavity 2 and the first nozzle 3 and also beneficial to exhausting of the nozzle 300. Meanwhile, the direction of the second pipe connecting opening 5 is set to be perpendicular to the axis direction of the accommodating cavity 2, so that the pipelines connected with the first pipe connecting opening 3 and the second pipe connecting opening 5 can be mutually staggered in space.

As shown in fig. 2, the front-end ink cartridge 100 in this embodiment is substantially rectangular and mainly includes a top wall 11, a bottom wall 12, and first, second, third and fourth side walls 13, 14, 15 and 16 connected end to end in order, where the top wall 11, the bottom wall 12, the first, second, third and fourth side walls 13, 14, 15 and 16 enclose the main body 1 of the front-end ink cartridge 100.

The first side wall 13 and the third side wall 15 are oppositely arranged, the second side wall 14 and the fourth side wall 16 are oppositely arranged, the second pipe joint is positioned on the first side wall 13, a first flange 17 and a second flange 18 are respectively arranged on the second side wall 14 and the fourth side wall 16, a first notch 171 is arranged at one end, far away from the first side wall 13, of the first flange 17, and a second notch 181 is arranged at one end, far away from the first side wall 13, of the second flange 18.

As shown in fig. 2, 3 and 4, the above structure can limit the position of the nozzle 300 by using the notches on the flanges on both sides, so as to ensure the accuracy of the relative position of the front-end ink cartridge 100 and the nozzle 300 when being mounted. Since the flanges are provided on both sides of the second nozzle 5 and both sides of the first joint 4, and the notch is provided at one end away from the second nozzle 5, this embodiment does not affect the surrounding joints when positioning by the flange and notch mounting.

Example 2

As shown in fig. 8 and 9, the present embodiment provides an ink jet printing apparatus including a front-end ink cartridge 100, a head 300, and the front-end ink cartridge 100 described in embodiment 1, the front-end ink cartridge 100 being connected to the head 300 and the rear-end ink cartridge 200, respectively.

Since the front-end ink cartridge 100 of the ink jet printing apparatus of the present embodiment directly connects the first interface 4 and the head 300, there is no need to additionally provide a connection line between the first interface 4 and the head 300, thereby greatly simplifying the complexity of the line. Because the first connector 4 and the spray head 300 are directly connected, a pipeline connected in the middle is omitted, and therefore, the condition that air generated by the spray head 300 stays in the middle pipeline is avoided. Since the ink omits the process of flowing in the intermediate line, the flow of ink between the first interface 4 and the head 300 is also smoother. Since the front-end ink cartridge 100 is directly connected to the head 300, intermediate components are omitted, thereby facilitating the direct attachment and detachment of the front-end ink cartridge 100 to and from the head 300. This can not only improve the reliability of the connection between the front-end ink cartridge 100 and the head 300, but also facilitate maintenance of the front-end ink cartridge 100.

In the foregoing, only the specific embodiments of the present utility model are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present utility model is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present utility model, and they should be included in the scope of the present utility model.

Claims (10)

1. Front-end ink cartridge, its characterized in that includes:

a main body provided with at least one accommodating cavity;

the first connecting pipe opening is positioned at the top of the main body, is communicated with the accommodating cavity and is used for being connected with the ink box through the ink pipe;

the first interface is positioned at the bottom of the main body, is communicated with the accommodating cavity and is used for being directly connected with the spray head;

the second connecting pipe opening is positioned on the side face of the main body, is communicated with the accommodating cavity and is used for being connected with the ink box through the ink pipe.

2. The front-end ink cartridge of claim 1, wherein the first and second nozzles are each configured to connect with a first ink cartridge.

3. The front-end ink cartridge of claim 2, wherein the first and second nozzles are either ink inlet nozzles, or

The first nozzle is an exhaust nozzle, and the second nozzle is an ink inlet nozzle.

4. The front-end cartridge of claim 1, wherein the first nozzle is connected to a first cartridge and the second nozzle is connected to a second cartridge.

5. The front-end ink cartridge of claim 2 or 4, wherein the first nozzle is a circulating ink inlet nozzle and the second nozzle is a circulating ink outlet nozzle.

6. The front-end ink cartridge according to claim 1, further comprising a first pipe joint including a first connection portion and a second connection portion, the first connection portion being connected to the second connection port, the second connection portion being in communication with the first connection portion, an axial direction of the second connection portion being perpendicular to an axial direction of the first connection portion.

7. The front-end ink cartridge of claim 6, further comprising a second pipe joint comprising a third connection portion and a fourth connection portion, the third connection portion being connected to the first interface tube, the third connection portion and the fourth connection portion having the same axial direction.

8. The front-end ink cartridge of claim 1, wherein the diameter of the first nozzle is greater than the diameter of the second nozzle and the diameter of the first interface.

9. The front-end ink cartridge according to claim 1, further comprising a sealing ring, wherein the sealing ring is arranged at a position where the first interface is spliced with the spray head, the first connecting pipe opening is connected with the rear-end ink cartridge through an ink pipe, the axial direction of the first connecting pipe opening is parallel to the axial direction of the accommodating cavity, the axial direction of the second connecting pipe opening is perpendicular to the axial direction of the accommodating cavity, the front-end ink cartridge comprises a top wall, a bottom wall, a first side wall, a second side wall, a third side wall and a fourth side wall which are sequentially connected end to end, the top wall, the bottom wall, the first side wall, the second side wall, the third side wall and the fourth side wall enclose a main body of the front-end ink cartridge, the first side wall and the third side wall are oppositely arranged, the second side wall and the fourth side wall are oppositely arranged, the second connecting pipe opening is positioned on the first side wall, a first flange and a second flange are respectively arranged on the second side wall and the fourth side wall, one end of the first flange, which is far from the first side wall, a first notch is arranged, and the second notch is far from the first end is arranged on the first side wall.

10. An inkjet printing apparatus comprising a rear-end ink cartridge, a head, and the front-end ink cartridge of any one of claims 1 to 9, the front-end ink cartridge being connected to the head and the rear-end ink cartridge, respectively.