CN212353293U

CN212353293U - Anti-return ink box

Info

Publication number: CN212353293U
Application number: CN202020856275.6U
Authority: CN
Inventors: 郑大航
Original assignee: Zhuhai National Resources & Jingjie Printing Technology Co ltd
Current assignee: Zhuhai National Resources & Jingjie Printing Technology Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-01-15
Anticipated expiration: 2030-05-20

Abstract

The utility model relates to the technical field of printer parts, in particular to an anti-backflow ink box, which comprises a shell, an ink outlet and an air inlet, wherein the shell is also internally provided with a pressure reducing cavity, a pressure reducing cavity and an anti-capillary structure, and the ink outlet is communicated with an ink storage cavity through the pressure reducing cavity, the pressure reducing cavity and the anti-capillary structure in sequence; the ink outlet of the utility model is sequentially communicated with the pressurizing cavity, the pressure reducing cavity and the anti-capillary structure, the ink outlet is arranged upwards possibly due to misoperation in the transportation or storage process, the anti-capillary structure can prevent ink from flowing back, and the problems of ink leakage and even damage to an ink box in the transportation or storage process are avoided; and guarantee through the pressure boost effect in pressure boost chamber that the ink outlet realizes supplying ink fast, and realize low pressure control through the pressure reduction effect in pressure reduction chamber, avoid appearing falling the phenomenon of black colour mixture, but also can guarantee the pressure balance of ink horn inside through pressure boost chamber and pressure reduction chamber intercommunication design.

Description

Anti-return ink box

Technical Field

The utility model relates to a printer part technical field especially relates to an anti-return ink horn.

Background

Ink jet printing is a well established and widely used printing technique, and whether bubble or piezo printing is used, ink jet printing systems typically require some way of stably and controllably feeding the liquid medium to be printed to the print head. A common method is to create a certain negative pressure in the ink cartridge, and during printing, the ink in the ink cartridge is delivered to the printing head under the suction force of the printing head; the negative pressure in the ink cartridge may be produced by various methods such as a method of producing a negative pressure in the ink cartridge by a mechanical valve or a method of producing a negative pressure in the ink cartridge by absorbing ink with a porous material, etc.; the precision requirement of a mechanical valve required for maintaining pressure stability is high, so that the prior art mostly adopts a structure that a porous material absorbs ink, the installation requirement of the sponge is high, poor printing is easy to occur if the sponge is not installed in place, and the installation quality of the sponge is difficult to detect after the sponge is installed, so that the quality of an ink control box is difficult to control.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an anti-backflow ink box for adopt the sponge to prevent anti-backflow in solving the prior art, and the design that adopts the sponge has a high cost, is difficult to detect the problem of sponge installation quality.

The utility model provides a technical scheme that its technical problem adopted does: the utility model provides an anti-return ink box, includes casing, ink outlet and air inlet, be provided with storage ink chamber in the casing, ink outlet sets up the bottom of casing, the air inlet sets up the top of casing, still be provided with pressure reduction chamber, pressure boost chamber and anti capillary structure in the casing, ink outlet passes through in proper order pressure boost chamber, pressure reduction chamber and anti capillary structure with storage ink chamber intercommunication.

As a further improvement of the scheme, the pressurizing cavity is communicated with the ink outlet through a depressurization groove.

As a further improvement of the above scheme, the anti-capillary structure is disposed on a side of the ink storage cavity close to the ink outlet.

As a further improvement of the above scheme, the anti-capillary structure includes an ink suction cavity, and the ink suction cavity is communicated with the ink storage cavity through an ink suction port.

As a further improvement of the scheme, two sides of the bottom of the ink absorption cavity are respectively provided with a connecting port, one of the connecting ports is communicated with the ink absorption port, and the other connecting port is communicated with the pressure reduction cavity.

As a further improvement of the above scheme, the pressurizing cavity is communicated with the ink outlet through a connecting groove.

As a further improvement of the above aspect, a volume of the pressurizing chamber near the ink outlet portion is smaller than a volume of the pressurizing chamber far from the ink outlet portion.

As a further improvement of the scheme, the ink storage device further comprises an air inlet hole, wherein the air inlet hole is formed in the bottom of the ink storage cavity, and the air inlet hole is communicated with the air inlet through an air inlet groove.

As a further improvement of the scheme, a filter chip is further arranged between the air inlet hole and the air inlet groove.

As a further improvement of the above scheme, an ink outlet chamber is arranged between the ink outlet and the pressure increasing chamber.

The beneficial effects of the utility model are that: the ink outlet of the utility model is sequentially communicated with the pressurizing cavity, the pressure reducing cavity and the anti-capillary structure, the ink outlet is arranged upwards possibly due to misoperation in the transportation or storage process, the anti-capillary structure can prevent ink from flowing back, and the problems of ink leakage and even damage to an ink box in the transportation or storage process are avoided; and guarantee through the pressure boost effect in pressure boost chamber that the ink outlet realizes supplying ink fast, and realize low pressure control through the pressure reduction effect in pressure reduction chamber, avoid appearing falling the phenomenon of black colour mixture, but also can guarantee the pressure balance of ink horn inside through pressure boost chamber and pressure reduction chamber intercommunication design.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an internal structure view of a backflow prevention ink cartridge according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the anti-backflow cartridge according to an embodiment of the present invention;

FIG. 3 is a schematic view of an ink outlet of the backflow prevention ink cartridge according to an embodiment of the present invention facing upward;

fig. 4 is a schematic structural view of the anti-backflow ink cartridge according to the embodiment of the present invention.

Wherein: a housing 100; an ink storage chamber 101; a depressurization chamber 102; a plenum chamber 103; a pressure reducing tank 104; an ink suction chamber 105; an ink suction port 106; an ink outlet 200; an air inlet 300; an air intake hole 301; an air intake duct 302; a filter chip 303; an ink outlet chamber 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the present number, and the terms greater than, less than, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, an anti-backflow ink cartridge includes a housing 100, and an ink outlet 200 and an air inlet 300 respectively disposed on the housing 100, wherein an ink storage chamber 101 is disposed in the housing 100, and a pressure reducing chamber 102, a pressure increasing chamber 103, and an anti-capillary structure are further disposed in the housing 100, the ink outlet 200 is disposed at the bottom of the housing 100, the air inlet 300 is disposed at the top of the housing 100, and the ink outlet 200 is sequentially communicated with the pressure increasing chamber 103, the pressure reducing chamber 102, the anti-capillary structure, and the ink storage chamber 101, and when in use, ink is stored in the ink storage chamber 101 and flows out through the anti-capillary structure, the pressure reducing chamber 102, the pressure increasing chamber 103, and the ink outlet 200 in sequence, so as to supply ink; when the ink box is transported or stored, the ink outlet 200 is stored upwards due to misoperation, the anti-capillary structure can reduce ink and block, and the problem of ink leakage and even damage to the ink box is avoided, specifically, when the ink outlet 200 is placed upwards, the ink in the pressure increasing cavity 103 and the pressure reducing cavity 102 is pumped into the ink storing cavity 101 due to the fact that the pressure increasing cavity 103 and the pressure reducing cavity 102 are both communicated with the ink storing cavity 101, and the cavity phenomenon of the pressure increasing cavity 103 and the pressure reducing cavity 102 is caused, so that the ink is prevented from flowing out of the ink outlet 200; when the ink-jet printer is used, the ink outlet 200 is placed downwards, so that ink flows into the pressure increasing cavity 103 and the pressure decreasing cavity 102, the ink can reach the ink outlet 200 in time when the ink-jet printer is used, and the problem of color shortage during printing is avoided; when the ink outlet 200 is stored towards the side, the anti-capillary structure is immersed in the ink storage cavity 101 to form a loop, so that the ink outlet 200 is ensured not to leak ink; in the ink supplying process, the pressure reducing cavity 102 can reduce the pressure of the ink on the printing head to protect the printing head and avoid the phenomenon of ink drop and color mixing of the printing head, specifically, the volume of the pressure reducing cavity 102 is smaller than that of the ink storage cavity 101, the ink in the ink storage cavity 101 flows into the pressure reducing cavity 102 through an anti-capillary structure, and then the pressure reducing cavity 102 supplies ink to the ink outlet 200 to realize pressure reduction, that is, the pressure of the ink outlet 200 is easily dropped due to the overlarge pressure provided by the large volume of the ink outlet 400, the pressure reducing cavity 102 arranged between the ink storage cavity 101 and the ink outlet 200 can effectively reduce the pressure of the ink outlet 200, so that the ink drop phenomenon caused by the instantaneous increase of the ink outlet pressure is avoided; the pressure reducing cavity 102 is connected with the pressure increasing cavity 103, the pressure increasing cavity 103 provides enough pressure for the printing head so as to realize rapid ink supply and ensure the smoothness of printing, and the pressure reducing cavity 102 and the pressure increasing cavity 103 are communicated and arranged to form a relationship of mutual association and mutual restriction, thereby ensuring the pressure balance of the whole ink box; the utility model adopts the anti-capillary structure to prevent the ink from flowing back, cancels the conventional structural design adopting sponge, reduces the number of parts of the ink box and reduces the manufacturing cost; and the structure that the pressure reduction cavity 102 is connected with the pressure increase cavity 103 can effectively avoid ink leakage and solve the problem of ink supply, and the performance of stable printing is improved.

In some embodiments, referring to fig. 1 and 2, the pressure increasing chamber 103 and the pressure reducing chamber 102 are communicated through a pressure reducing tank 104, and the pressure reducing tank 104 may be tubular and is communicated with the bottom of the pressure reducing chamber 102 and the top of the pressure increasing chamber 103, so as to avoid the pressure increasing chamber 103 providing excessive ink supply pressure, and ink is conveyed through the pressure reducing tank 104 to achieve stable and rapid ink supply effect.

In some embodiments, referring to fig. 1 and 2, the anti-capillary structure is disposed on a side of the film storage cavity close to the ink outlet 200, and the anti-capillary structure includes an ink suction cavity 105, the ink suction cavity 105 communicates with the film storage cavity through an ink suction port 106, specifically, two sides of the bottom of the ink suction cavity 105 are respectively provided with a connection port, one of the connection ports communicates with the ink suction port 106, the other ink suction port 106 communicates with the pressure reduction cavity 102, the ink suction cavity 105 functions to block the communication between the anti-capillary pressure reduction cavity 102 and the ink storage cavity 101 through the anti-capillary structure when the ink outlet 200 is placed upwards, so as to ensure that ink is difficult to flow from the ink storage cavity 101 into the pressure reduction cavity 102 and the pressure increase cavity 103, and avoid ink leakage.

In some embodiments, the pressure increasing chamber 103 and the ink outlet 200 are communicated with a connecting groove, and the ink outlet 400 is further disposed between the ink outlet 200 and the pressure increasing chamber 103, that is, the pressure increasing chamber 103 and the ink outlet 400 are communicated through the connecting groove, which may be in a sealed tubular shape, and ink may flow from the pressure increasing chamber 103 to the ink outlet 200 along the connecting groove, specifically, the connecting groove may extend upward from the bottom of the pressure increasing chamber 103 to the top of the housing 100, and extend downward after being bent to communicate with the ink outlet 200 to increase the length of the connecting groove, which aims to ensure that ink at the bottom of the pressure increasing chamber 103 is sucked, and prevent residual ink in the pressure increasing chamber 103.

In some embodiments, referring to fig. 2, the volume of the portion of the pressurizing chamber 103 close to the ink outlet 200 is smaller than the volume of the portion far from the ink outlet 200, and in other embodiments, the pressurizing chamber 103 may have an inverted frustum shape or a chamfered frustum shape with a large top and a small bottom.

In some embodiments, referring to fig. 1 to 4, the housing 100 further includes an air inlet hole 301, specifically, the air inlet hole 301 is disposed at the bottom of the ink storage cavity 101, the air inlet hole 301 communicates with the air inlet 300 through an air inlet slot 302, the air inlet slot 302 may be in a sealed tubular shape, and the air inlet slot 302 is at least bent from the top to the bottom of the housing 100, so as to increase the length of the air inlet slot 302 and avoid an ink leakage accident; further, a filter element 303 is further disposed between the air inlet hole 301 and the air inlet slot 302, the filter element 303 can be disposed in the air inlet hole 301, and the purpose of the filter element 303 is to make ink adhere to the surface of the filter element 303 to form surface tension, so that the ink is difficult to leak from the air inlet hole 301 and the air inlet slot 302, and the outside air can enter along the air inlet slot 302 through the air inlet 300, so that a certain negative pressure is maintained in the ink storage chamber 101.

It should be noted that the connection channel between the anti-capillary structure and the depressurization chamber 102 may be a capillary channel, and further, a capillary channel with a smaller tube diameter may be used.

The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.

Claims

1. The utility model provides an anti-return ink box, its characterized in that, includes casing, ink outlet and air inlet, be provided with storage ink chamber in the casing, ink outlet sets up the bottom of casing, the air inlet sets up the top of casing, still be provided with pressure reduction chamber, pressure boost chamber and anti capillary structure in the casing, ink outlet passes through in proper order pressure boost chamber, pressure reduction chamber and anti capillary structure with storage ink chamber intercommunication.

2. The anti-backflow ink cartridge as claimed in claim 1, wherein the pressurization chamber and the ink outlet port are communicated through a depressurization groove.

3. The anti-backflow ink cartridge as claimed in claim 1, wherein the anti-capillary structure is disposed in the ink storage chamber on a side thereof adjacent to the ink outlet.

4. The ink cartridge as claimed in claim 1 or 3, wherein the anti-capillary structure comprises an ink suction chamber communicating with the ink reservoir through an ink suction port.

5. The ink cartridge as claimed in claim 4, wherein the ink suction chamber has connection ports on both sides of the bottom thereof, one of the connection ports communicating with the ink suction port and the other connection port communicating with the pressure reducing chamber.

6. The anti-backflow ink cartridge as claimed in claim 1, wherein the pressurization chamber and the ink outlet are communicated through a connection groove.

7. The backflow prevention ink cartridge as claimed in claim 1, wherein a volume of the pressurizing chamber near the ink outlet portion is smaller than a volume of the pressurizing chamber far from the ink outlet portion.

8. The anti-backflow ink cartridge as claimed in claim 1, further comprising an air inlet hole, wherein the air inlet hole is disposed at a bottom of the ink storage chamber, and the air inlet hole are communicated through an air inlet groove.

9. The anti-backflow ink cartridge as claimed in claim 8, wherein a filter chip is further disposed between the air inlet hole and the air inlet groove.

10. The backflow prevention ink cartridge as claimed in claim 1, wherein an ink outlet chamber is provided between the ink outlet and the pressurizing chamber.