CN114211884B

CN114211884B - Secondary ink box for ink-jet printer

Info

Publication number: CN114211884B
Application number: CN202111494751.XA
Authority: CN
Inventors: 单健; 王家远; 闫峂; 脱占贺; 单川
Original assignee: Beijing Yuande Electric Science And Technology LLC
Current assignee: Beijing Yuande Electric Science And Technology LLC
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-09-30
Anticipated expiration: 2041-12-08
Also published as: CN114211884A; WO2023103488A1

Abstract

The invention relates to a two-stage ink box for an ink-jet printer, which comprises an ink box body, a rear end cover and a front end cover, wherein the rear end cover and the front end cover are respectively sealed and covered with the ink box body, an ink supply cavity and a backflow ink cavity are respectively arranged in the ink box body and are respectively positioned at the left side and the right side of the ink box body, the bottoms of the ink supply cavity and the backflow ink cavity are respectively provided with a plurality of ink through holes, liquid level sensors for detecting the ink amount in the ink cavities are respectively arranged in the ink supply cavity and the backflow ink cavity, a negative pressure cavity I communicated with the ink supply cavity is arranged above the ink supply cavity, and a negative pressure cavity II communicated with the backflow ink cavity is arranged above the backflow ink cavity. The secondary ink box for the ink-jet printer, provided by the invention, is ingenious in design, and has the beneficial effects of preventing ink precipitation, effectively removing bubbles, being high in printing stability, being good in constant temperature effect and being strong in reliability.

Description

Secondary ink box for ink-jet printer

Technical Field

The invention relates to the technical field of ink-jet printing equipment, in particular to a secondary ink box for an ink-jet printer.

Background

The printing trolley of the ink-jet printer is provided with a secondary ink box, which is also called a secondary ink box. Ink flows from the main ink box to the secondary ink box, and then the secondary ink box supplies the ink to each spray head. In order to ensure the normal supply of ink, a liquid level sensor is always arranged on the secondary ink box and used for detecting the ink amount in the ink box, so that the ink supply can be stopped in time when the ink box is short of ink or the ink amount is enough; the ink cavity of the secondary ink box is also connected with a negative pressure system and a positive pressure system, the negative pressure system is used for adjusting the negative pressure value in the ink cavity to ensure the normal ink supply of the spray head, and the positive pressure system is used for pressing the spray head to dredge the spray hole when the spray hole is blocked.

When the pigment ink is printed, because the pigment ink contains tiny particles, precipitates are easily generated in a secondary ink box or other components, so that an ink inlet and an ink outlet of an ink tube or the components are blocked, and more seriously, a spray head is blocked, so that the loss is large. When ink is supplied from the main ink tank to the secondary ink tank, bubbles are mixed when the ink flows through each component, and the bubbles easily cause empty ejection of the printing head, so that degassing treatment needs to be performed on the ink entering the secondary ink tank. The prior art disclosed in chinese patent CN206394248U adopts a large circulation mode in which a main ink tank, a bubble removing device, a first sub ink tank, a nozzle, a second sub ink tank, and a main ink tank are connected in sequence to make ink flow circularly, and since the ink flow path is long and passes through various components such as pumps and valves, contamination of the ink is easily caused, which not only makes the power of the device for providing power for ink flow high and consumes much, but also makes the ink more easily contaminated or bubbles generated in the long-path circulating flow, resulting in an unsatisfactory effect of ink circulation, and shortens the service life of components such as a filter; and circulation is realized between the secondary ink box and the spray head through the action of the pump, and the pump can generate pulse vibration during working, so that the ink circulation pressure at the spray head is unstable, and the printing of the spray head is influenced.

When the ink-jet printer normally works, the requirement on the working temperature of ink is high, the working temperature of the ink is generally 23-26 ℃, when the temperature is too high, the ink is easy to volatilize, so that the ink is easy to dry, when the temperature is too low, the fluidity of the ink is poor, the two conditions can cause the ink discharging of the nozzle to be poor, and the printing quality is influenced, so that the ink supplied to the printing nozzle by the secondary ink box needs to be kept at a proper temperature to keep good fluidity. In the prior art disclosed in chinese patent CN202088668U, although the temperature of the ink in the secondary ink cartridge can be controlled within a constant range, the cooling component, the heat dissipation component and the heating component are arranged around the secondary ink cartridge, which increases the volume and weight of the secondary ink cartridge, when the types of ink required for printing are many, a plurality of secondary ink cartridges need to be installed, which increases the overall volume and weight of the nozzle carriage, affects the stability of the carriage movement, and further affects the printing quality; in actual printing work, certain temperature difference also exists between the temperature of the ink in the spray head and the temperature of the ink in the secondary ink box, and when the temperature of the ink in the secondary ink box is proper, the temperature of the ink in the printing spray head is often not in the proper temperature range, so that the printing quality is influenced.

In addition, if a liquid level sensor in the ink cavity of the secondary ink box breaks down, ink is easily sucked back to a negative pressure passage, and components in the negative pressure passage are damaged, so that the problem of ink suck-back needs to be considered when the pressure value in the ink cavity of the secondary ink box is adjusted by negative pressure.

In summary, the following problems exist in the prior art:

1) the ink circulation path is long, so that the ink is easily polluted or secondarily generates bubbles, the circulation effect is not ideal, and the service life of components is influenced;

2) circulation is realized between the secondary ink box and the spray head through the action of the pump, and the pump can generate pulse vibration when working, so that the ink circulation pressure at the spray head is unstable, and the printing of the spray head is influenced;

3) the thermostatic device of the secondary ink box not only increases the volume and the weight of the secondary ink box, but also has undesirable thermostatic effect on ink;

4) it is necessary to prevent the ink from being sucked back into the negative pressure path.

Disclosure of Invention

The invention aims to provide a two-stage ink box for an ink-jet printer, which aims to solve the defects in the prior art, and the technical problem to be solved by the invention is realized by the following technical scheme.

The utility model provides a second grade ink horn for ink jet printer, including the ink box body, respectively with rear end housing and front end housing that the mutual sealed lid of ink box body closed, be equipped with the confession ink chamber and the backward flow china ink chamber that are located its left and right sides respectively in the ink box body, supply the china ink chamber with the bottom in backward flow china ink chamber is equipped with a plurality of logical black holes respectively, supply the china ink chamber with the backward flow china ink intracavity is equipped with the level sensor who is used for detecting china ink intracavity china ink volume respectively, the top in confession china ink chamber is equipped with the negative pressure chamber I rather than being linked together, the top in backward flow china ink chamber is equipped with the negative pressure chamber II rather than being linked together.

Preferably, the ink return cavity is communicated with a main ink tank of the printer, the ink return cavity is communicated with one end of a degasser, and the other end of the degasser is communicated with the ink supply cavity.

Preferably, the liquid level sensor in the backflow ink cavity comprises a low liquid level sensor II and a high liquid level sensor II.

Preferably, an ink tube II is arranged in the backflow ink cavity, the ink tube II is arranged between the front end cover and the rear end cover, is perpendicular to the front end cover and is lower than the low liquid level sensor II in height, and a plurality of through holes II are formed in the bottom of the ink tube II.

Preferably, an ink inlet joint I is installed on the outer side of the front end cover, an ink inlet hole is formed in the inner side of the front end cover, the ink inlet hole is communicated with the ink inlet joint I, an ink tube II is installed in the ink inlet hole, and the diameter of the ink inlet hole is larger than that of the ink tube II.

Preferably, an ink outlet joint is installed on the outer side of the front end cover, the ink outlet joint is communicated with the ink tube II, and a plurality of through holes III are formed in the upper end of one end part, close to the ink inlet hole, of the ink tube II.

Preferably, the interval between the through holes II of the bottom of the ink tube II far away from the ink inlet end is smaller than the interval between the through holes II near the ink inlet end.

Preferably, the liquid level sensors in the ink supply cavity comprise a low liquid level sensor I, a middle liquid level sensor I and a high liquid level sensor I.

Preferably, an ink tube I is arranged in the ink supply cavity, the ink tube I is arranged between the front end cover and the rear end cover, is perpendicular to the front end cover and is lower than the low liquid level sensor I in height, and a plurality of through holes I which penetrate through the ink tube I in the left-right direction are formed in the ink tube I.

Preferably, an ink inlet joint II is installed on the outer side of the front end cover, an ink tube installation hole II is formed in the inner side of the front end cover, and one end of the ink tube I is installed in the ink tube installation hole II and communicated with the ink inlet joint II.

Preferably, the interval between the through holes I on the ink tube I far from the end of the ink tube mounting hole II is smaller than the interval between the through holes I near the end of the ink tube mounting hole II.

Preferably, bosses respectively matched with the ink supply cavity, the ink return cavity, the negative pressure cavity I and the negative pressure cavity II of the ink cartridge body are arranged on the inner side of the front end cover, and sealing rings are respectively arranged between the peripheries of the ink supply cavity, the ink return cavity, the negative pressure cavity I and the negative pressure cavity II and the front end cover.

Preferably, the inner side of the rear end cover is provided with bosses respectively matched with the ink supply cavity, the backflow ink cavity, the negative pressure cavity I and the negative pressure cavity II of the ink cartridge body, and sealing rings are respectively arranged between the peripheries of the ink supply cavity, the backflow ink cavity, the negative pressure cavity I and the negative pressure cavity II and the rear end cover.

Preferably, a constant temperature water cavity is arranged between the ink supply cavity and the ink return cavity, and the constant temperature water cavity is communicated with a constant temperature water system.

Preferably, the constant temperature water cavity comprises a water cavity I positioned on the right side of the ink supply cavity and a water cavity II positioned on the left side of the backflow ink cavity, and an isolation cavity is arranged between the water cavity I and the water cavity II.

Preferably, a water inlet joint is installed on the outer side of the front end cover, one end of the water inlet joint is communicated with the water cavity I, the other end of the water inlet joint is communicated with a water outlet of the constant-temperature water system, a water outlet joint is installed on the outer side of the front end cover, one end of the water outlet joint is communicated with the water cavity II, the other end of the water outlet joint is communicated with a water inlet of the constant-temperature water system, and water through openings are respectively formed in the bottoms of the water cavity I and the water cavity II, which are close to one end of the rear end cover.

Preferably, the lower end of the front end cover is provided with a water circulation joint I, the water circulation joint I is communicated with the water cavity I, the lower end of the rear end cover is provided with a water circulation joint II, and the water circulation joint II is communicated with the water cavity II.

Preferably, keep apart the top in chamber and be equipped with the malleation chamber rather than being linked together, it is used for the holding washing liquid to keep apart the chamber, the bottom of keeping apart the chamber is equipped with a plurality of liquid through holes, it is equipped with level sensor to keep apart the intracavity, level sensor includes low level sensor III and high level sensor III.

Preferably, a cleaning liquid joint is installed on the outer side of the front end cover and communicated with the isolation cavity.

Preferably, the inboard of front end housing be equipped with respectively with water cavity I, water cavity II, keep apart the chamber, malleation chamber assorted boss, water cavity I, water cavity II, keep apart the periphery in chamber, malleation chamber and be equipped with the sealing washer between the front end housing respectively.

Preferably, the inboard of rear end cap be equipped with respectively with water cavity I, water cavity II, keep apart the chamber, malleation chamber assorted boss, water cavity I, water cavity II, keep apart the periphery in chamber, malleation chamber and be equipped with the sealing washer between the rear end cap respectively.

Preferably, the lower ends of the ink supply cavity and the ink return cavity of the ink box body are respectively provided with an electromagnetic valve, and the electromagnetic valves are respectively communicated with the ink through holes of the ink supply cavity and the ink return cavity.

Preferably, the lower end of the ink cartridge body is provided with a through groove, and the solenoid valve is mounted at the lower end of the ink cartridge body through a screw and a square nut.

The invention provides a secondary ink box for an ink-jet printer, which has the following beneficial effects:

1) one part of the ink in the ink supply cavity is used for printing, and the other part of the ink circulates between the secondary ink box and the printing nozzle, so that the circular flow of the ink is ensured, the nozzle is prevented from being blocked by the ink due to the generation of precipitates, the circular flow is short, and the pollution and the possibility of generating bubbles of the ink in the circular flow process are reduced;

2) the ink circulation between the secondary ink box and the printing nozzle generates circulating power by the pressure difference in the two negative pressure cavities, so that the mode of providing the circulating power by a pump in the prior art is replaced, the influence of the pulse vibration of the pump on the nozzle printing is avoided, and the printing stability is improved;

3) when the liquid level sensor in the ink supply cavity or the ink return cavity breaks down to cause excessive overflow of ink, the negative pressure cavity can serve as an ink overflow cavity to play a buffering role, damage to components and parts caused by the fact that ink is sucked back into the negative pressure channel is avoided, and reliability is higher;

4) a circulation passage for degassing is arranged between the ink return cavity and the ink supply cavity, so that bubbles in ink supplied to the printing nozzle are removed, and the printing quality is improved; meanwhile, the circulation and the degassing circulation between the secondary ink box and the printing spray head are divided into two paths, and the modes of providing power by negative pressure and providing power by a pump are respectively adopted, so that the printing stability is ensured, the ink precipitation is avoided, and air bubbles are removed;

5) the positions of the through holes on the ink tube I and the ink tube II are skillfully arranged, so that the fluidity of the ink can be enhanced, and bubbles in the ink can be removed conveniently;

6) the arrangement of the constant-temperature water cavity ensures that the ink supplied to the printing nozzle has good fluidity; the arrangement of the water cavity I, the water cavity II and the isolation cavity can better ensure that the ink in the ink supply cavity is in a constant temperature, so that the ink supplied to the printing nozzle has good fluidity; the arrangement of the circulating passages among the water cavity I, the water pipe on the bottom plate and the water cavity II ensures that the ambient environment of the printing nozzle arranged on the bottom plate is in a proper temperature, and the good fluidity of the ink in the printing nozzle can be ensured;

7) the positive pressure cavity and the isolation cavity are arranged to realize positive pressure dredging and cleaning of the printing spray head by the cleaning liquid;

8) the arrangement of the liquid level sensor enables the whole device to have higher reliability, and the liquid is effectively prevented from being emptied or overflowing;

9) the arrangement of bosses on the front end cover and the rear end cover and the arrangement of the sealing rings ensure that the sealing effect is better;

10) the through groove at the lower end of the ink box body is arranged, so that the installation position of the electromagnetic valve is flexible and adjustable, and the installation is firmer.

In conclusion, the secondary ink box for the ink-jet printer, provided by the invention, is ingenious in design, and has the beneficial effects of preventing ink precipitation, effectively removing bubbles, being high in printing stability, being good in constant temperature effect and being high in reliability.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of an ink cartridge body according to the present invention;

FIG. 3 is a rear view of the present invention;

FIG. 4 is a perspective view of the outside of the rear end cap of the present invention;

FIG. 5 is a schematic perspective view of the inside of the rear end cap of the present invention;

FIG. 6 is a schematic front view of the present invention;

FIG. 7 is a perspective view of the outer side of the front end cap according to the present invention;

FIG. 8 is a perspective view of the inside of the front end cap of the present invention;

FIG. 9 is a schematic view showing an assembly structure of ink tubes I and II according to the present invention;

FIG. 10 is a schematic top view of an ink tube II according to the present invention;

FIG. 11 is a schematic bottom view of an ink tube II according to the present invention;

the reference numbers in the drawings are, in order: 1. an ink box body 11, an ink supply cavity 12, a backflow ink cavity 13, a negative pressure cavity I, 14, a negative pressure cavity II, 15, a water cavity I, 16, a water cavity II, 17, an isolation cavity 18, a positive pressure cavity 19, a through groove 2, a rear end cover 201, a low liquid level sensor I, 202, a middle liquid level sensor 203, a high liquid level sensor I, 204, a low liquid level sensor II, 205, a high liquid level sensor II, 206, a pressure sensor I, 207, a pressure sensor II, 208, a low liquid level sensor III, 209, a high liquid level sensor III, 210, a water circulation connector II, 211, an ink pipe mounting hole I, 3, a front end cover, 301, an ink inlet connector I, 302, an ink outlet connector 303, an ink inlet connector II, 304, an air inlet connector I, 305, an air inlet connector II, 306, a water inlet connector, 307, a water outlet connector 308, an air inlet connector III, 309, a cleaning liquid connector 310, a water circulation connector I, 311. ink inlet hole 312, ink tube mounting holes II, 4, ink tubes I, 5, ink tubes II, 6 and electromagnetic valve.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1:

referring to fig. 1 and 2, a secondary ink cartridge for an ink jet printer is improved in that: including the ink cartridge body 1, respectively with rear end cap 2 and front end housing 3 that the mutual sealed lid of ink cartridge body 1 closed, be equipped with the confession ink chamber 11 and the backward flow china ink chamber 12 that are located its left and right sides respectively in the ink cartridge body 1, supply china ink chamber 11 with the bottom in backward flow china ink chamber 12 is equipped with a plurality of china ink holes that lead to respectively, supply china ink chamber 11 with be equipped with the level sensor who is used for detecting china ink intracavity china ink volume in the backward flow china ink chamber 12 respectively, the top of supplying china ink chamber 11 is equipped with the negative pressure chamber I13 rather than being linked together, the top in backward flow china ink chamber 12 is equipped with the negative pressure chamber II14 rather than being linked together.

In this embodiment, the printing nozzle is installed at the bottom of the printing module, the secondary ink cartridge is installed above the printing nozzle, the bottom of the ink supply chamber 11 and the bottom of the ink return chamber 12 are respectively provided with a plurality of ink through holes, the ink supply chamber 11 is communicated with the ink inlet hole of the printing nozzle through the ink through hole at the lower end, the ink return chamber 12 is communicated with the ink outlet hole of the printing nozzle through the ink through hole at the lower end, and then a passage is formed among the ink supply chamber 11, the printing nozzle, and the ink return chamber 12. The vacuum degree in the negative pressure cavity I13 is set to be smaller than the vacuum degree in the negative pressure cavity II14, so that a pressure difference is formed between the negative pressure cavity II14 and the negative pressure cavity I13, after ink enters the printing nozzle, a part of ink is sprayed onto a printing medium by the printing nozzle, and a part of ink flows back to the backflow ink cavity 12 from an ink outlet of the printing nozzle under the action of negative pressure, namely, a part of ink in the ink supply cavity 11 is used for printing, and a part of ink circulates between the secondary ink box and the printing nozzle, so that the circulating flow of ink is ensured, the nozzle is prevented from being blocked by the ink generated precipitates, the circulating flow is short, and the pollution and the possibility of generating bubbles of the ink in the circulating flow process are reduced. The ink circulation between the secondary ink box and the printing nozzle generates the circulating power by the pressure difference in the two negative pressure cavities, the mode of providing the circulating power by the pump in the prior art is replaced, the influence of the pulse vibration of the pump on the nozzle printing is avoided, and the printing stability is improved. The arrangement of the negative pressure cavity I13 and the negative pressure cavity II14 can generate pressure difference to provide power for ink circulation on one hand, and on the other hand, when the liquid level sensor in the ink supply cavity or the ink return cavity breaks down to cause excessive overflow of ink, the negative pressure cavity can also serve as an ink overflow cavity to play a buffering role, so that damage to components and parts caused by the fact that ink is sucked to the negative pressure channel reversely is avoided.

Further, a pressure sensor I is arranged in the negative pressure cavity I13, and a pressure sensor II is arranged in the negative pressure cavity II 14.

Further, the pressure sensor I and the pressure sensor II are mounted on the front end cover 3.

Example 2:

on the basis of embodiment 1, the ink return chamber 12 communicates with a main ink tank of the printer, the ink return chamber 12 communicates with one end of a degassing device, and the other end of the degassing device communicates with the ink supply chamber 11.

In this embodiment, the ink in the main ink tank is continuously pumped into the return ink chamber 12 by the pump, the ink pumped into the return ink chamber 12 by the main ink tank is inevitably doped with bubbles, and the bubble-doped ink enters the printing head and is easy to generate an empty jet phenomenon during printing, so that the printing quality is affected, therefore, another circulation path is arranged between the return ink chamber 12 and the ink supply chamber 11, and the circulation path is used for removing bubbles in the ink entering the ink supply chamber 11, namely, the ink in the return ink chamber 12 flows into the degassing device under the action of the pump, and enters the ink supply chamber 11 after being degassed by the degassing device, so that the quality of the ink supplied to the printing head by the ink supply chamber 11 is ensured.

Example 3:

on the basis of embodiment 2, referring to fig. 3 to 8, the liquid level sensors in the ink return chamber 12 include a low liquid level sensor II204 and a high liquid level sensor II 205.

Further, the low liquid level sensor II204 and the high liquid level sensor II205 are mounted on the rear end cap 2 and are disposed in the ink return chamber 12.

Further, an ink tube II5 is disposed in the ink return chamber 12, the ink tube II5 is mounted between the front end cap 3 and the rear end cap 2, is perpendicular to the front end cap 3, and has a height lower than the low liquid level sensor II204, and referring to fig. 11, a plurality of through holes II are disposed at the bottom of the ink tube II 5.

Further, an ink inlet joint I301 is installed on the outer side of the front end cover 3, an ink inlet hole 311 is formed in the inner side of the front end cover 3, the ink inlet hole 311 is communicated with the ink inlet joint I301, the ink tube II5 is installed in the ink inlet hole 311, and the diameter of the ink inlet hole 311 is larger than that of the ink tube II 5.

Further, an ink outlet connector 302 is mounted on the outer side of the front end cover 3, the ink outlet connector 302 is communicated with the ink tube II5, and as shown in fig. 10, a plurality of through holes III are formed in the upper end of one end of the ink tube II5 close to the ink inlet 311.

Further, the interval between the through holes II at the end of the bottom of the ink tube II5 far away from the ink inlet 311 is smaller than the interval between the through holes II near the end of the ink inlet 311.

Further, the liquid level sensors in the ink supply chamber 11 include a low liquid level sensor I201, a medium liquid level sensor 202, and a high liquid level sensor I203.

Further, the low liquid level sensor I201, the middle liquid level sensor 202 and the high liquid level sensor I203 are mounted on the rear end cap 2 and are disposed in the ink supply chamber 11.

Further, an ink tube I4 is disposed in the ink supply chamber 11, the ink tube I4 is mounted between the front end cap 3 and the rear end cap 2, is perpendicular to the front end cap 3, and has a height lower than the low liquid level sensor I201, and referring to fig. 9, a plurality of through holes I are disposed on the ink tube I4 and penetrate through the through holes from left to right.

Further, an ink inlet joint II303 is mounted on the outer side of the front end cover 3, an ink tube mounting hole II312 is disposed on the inner side of the front end cover 3, and one end of the ink tube I4 is mounted in the ink tube mounting hole II312 and is communicated with the ink inlet joint II 303.

Further, the interval between the through holes I on the ink tube I4 far from the end of the ink tube mounting hole II312 is smaller than the interval between the through holes I near the end of the ink tube mounting hole II 312.

In this embodiment, the low level sensor II204 in the ink return chamber 12 ensures that the ink amount in the ink return chamber 12 is always kept at a proper height, the high level sensor II205 is used to avoid ink overflow caused by excessive ink amount, and the position of the ink tube II5 is lower than the low level sensor, so as to ensure that the ink tube II5 is always placed in the ink. The ink in the main ink tank enters the ink return cavity 12 from the ink inlet joint I through the ink inlet hole 311, the ink in the ink return cavity 12 enters the ink tube II5 through the through hole II at the bottom of the ink tube II5 and the through hole III at the upper end of one end of the ink tube II5 close to the ink inlet hole 311 under the action of a pump, and flows out into the degassing device through the ink outlet joint 302 under the action of the pump, the through hole II is arranged at the bottom of the ink tank II5, because the ink is easy to precipitate at the bottom end of the ink cavity, the ink at the bottom of the ink chamber can be sucked upwards from the bottom to flow the ink at the bottom of the ink cavity, the precipitation is better avoided, the through hole III on the ink tube II5 close to one end of the ink inlet hole 311 is arranged at the upper end, because the ink at the ink inlet hole 311 is the ink in the main ink tank, the content of the air bubbles is higher, the quality of the ink with bubbles is high, the bubbles are generally at the upper part, and the arrangement of the through hole III is convenient for pumping the ink with the higher content into the degassing device, so that the degassing effect is better. Ink is through degasser degasification back, get into and flow out through the through-hole I of ink pipe I4 both sides by advancing black joint 303, the low level sensor I201 in the ink supply chamber 11 guarantees the minimum ink volume in the ink supply chamber II, prevent that the ink volume from being empty, it can spray to lead to printing shower nozzle nothing, well level sensor is used for guaranteeing that the ink volume in the ink supply chamber 11 keeps at suitable height all the time, high level sensor I203 is used for avoiding the ink volume too much and leads to excessive ink, the position of ink pipe I4 is less than low level sensor I201, then guarantee that ink pipe I4 is arranged in the ink all the time, produce the bubble when avoiding the ink to flow out from through-hole I.

The through holes I and II on the ink tubes I and II 4 and 5 are sparser on the side close to the front end cap 3 than on the side close to the rear end cap 2, so that ink is more drawn away from the far end of the ink inlet 311, the fluidity of the ink is enhanced, and the generation of precipitates is avoided.

Further, an ink tube mounting hole I211 is formed in the inner side of the rear end cap 2, and the other ends of the ink tube I4 and the ink tube II5 are respectively mounted in the ink tube mounting hole I211.

Further, the inner side of the front end cover 3 is provided with bosses respectively matched with the ink supply cavity 11, the backflow ink cavity 12, the negative pressure cavity I13 and the negative pressure cavity II14 of the ink cartridge body 1, and sealing rings are respectively arranged between the peripheries of the ink supply cavity 11, the backflow ink cavity 12, the negative pressure cavity I13 and the negative pressure cavity II14 and the front end cover 3.

Further, the inner side of the rear end cap 2 is provided with bosses respectively matched with the ink supply cavity 11, the backflow ink cavity 12, the negative pressure cavity I13 and the negative pressure cavity II14 of the ink cartridge body 1, and sealing rings are respectively arranged between the peripheries of the ink supply cavity 11, the backflow ink cavity 12, the negative pressure cavity I13 and the negative pressure cavity II14 and the rear end cap 2.

The arrangement of the boss and the sealing ring enables the sealing effect between the ink box body 1 and the front end cover 3 and the rear end cover 2 to be better.

Example 4:

on the basis of any one of the above embodiments, a constant temperature water chamber is arranged between the ink supply chamber 11 and the ink return chamber 12, and the constant temperature water chamber is communicated with a constant temperature water system.

In this embodiment, the constant temperature water chamber is provided to adjust the temperature of the ink in the ink supply chamber 11 and the ink return chamber 12, so that the ink supplied to the print head has good fluidity.

Example 5:

on the basis of embodiment 4, the constant temperature water chamber includes a water chamber I15 located on the right side of the ink supply chamber 11 and a water chamber II16 located on the left side of the ink return chamber 12, and an isolation chamber 17 is provided between the water chamber I15 and the water chamber II 16.

Further, water supply connector 306 is installed in the outside of front end housing 3, water supply connector 306 one end with water cavity I15 is linked together, the other end is linked together with constant temperature water system's delivery port, water connection 307 is installed in the outside of front end housing 3, water connection 307's one end with water cavity II16 is linked together, the other end is linked together with constant temperature water system's water inlet, water cavity I15 with water cavity II16 is close to the bottom of 2 one ends of rear end housing is equipped with logical water mouth respectively.

In this embodiment, the ink in the main ink tank is supplied to the backflow ink chamber 12, the ink in the ink supply chamber 11 is supplied to the printing nozzle, after the ink in the ink supply chamber 11 is printed by the printing nozzle, the rest of the ink flows back to the backflow ink chamber 12, obviously, the temperature of the ink in the backflow ink chamber 12 is lower than that in the ink supply chamber 11, the constant temperature water chamber is divided into the water chamber I15 and the water chamber II16, and the isolation chamber 17 is arranged between the water chamber I15 and the water chamber II16, so as to avoid the mutual influence of the water temperatures in the water chamber I15 and the water chamber II16, and to better ensure that the ink in the ink supply chamber 11 is at a constant temperature, so that the ink supplied to the printing nozzle has good fluidity. After entering the water cavity I15, the constant temperature water in the constant temperature water system adjusts the temperature of the ink in the ink supply cavity 11, the water through hole at the lower end of the water cavity I15 is communicated with the water through hole at the lower end of the water cavity II16 through a water pipe, the water in the water cavity I15 flows back to the water cavity II16 through the water pipe and flows out to the constant temperature water system through the water outlet joint 307, so that a circulating water path is formed, and the ink supplied to the printing nozzle has good fluidity.

Example 6:

on the basis of embodiment 5, the lower end of the front end cover 3 is provided with a water circulation joint I310, the water circulation joint I310 is communicated with the water cavity I15, the lower end of the rear end cover 2 is provided with a water circulation joint II210, and the water circulation joint II210 is communicated with the water cavity II 16.

In this embodiment, a water pipe is arranged on the bottom plate on which the printing nozzle is installed, and the constant-temperature water in the water cavity I15 is distributed downwards into the water pipe on the bottom plate through the water circulation joint I310 to adjust the temperature of the bottom plate, so that the surrounding environment of the printing nozzle installed on the bottom plate is at a proper temperature, and thus good fluidity of ink in the printing nozzle can be ensured, and the printing quality is improved.

Example 7:

on

embodiment

5 or 6 basis, keep apart the top of chamber 17 and be equipped with the malleation chamber 18 rather than being linked together, keep apart chamber 17 and be used for the holding washing liquid, the bottom of keeping apart chamber 17 is equipped with a plurality of liquid through holes, it is equipped with level sensor in the chamber 17 to keep apart, level sensor includes low level sensor III208 and high level sensor III 209.

Further, a cleaning liquid joint 309 is installed on the outer side of the front end cover 3, and the cleaning liquid joint 309 is communicated with the isolation cavity 17.

In this embodiment, keep apart the holding washing liquid in the chamber 17 and be linked together through leading to the liquid hole and printing the shower nozzle, when printing the shower nozzle and appear blockking up or need wash, exert the malleation in keeping apart chamber 17 through positive pressure chamber 18 to press the washing liquid and dredge and wash printing the shower nozzle in printing the shower nozzle. The low liquid level sensor III208 is used for ensuring the minimum liquid amount of the cleaning liquid and avoiding the cleaning liquid from being emptied, and the high liquid level sensor III209 can avoid the overflow caused by the excessive liquid amount.

Further, a positive pressure joint 308 is installed on the front end cover 3, and the positive pressure joint 308 is communicated with the positive pressure cavity 18.

Further, the inboard of front end housing 3 be equipped with respectively with water chamber I15, water chamber II16, keep apart chamber 17, positive pressure chamber 18 assorted boss, the periphery of water chamber I15, water chamber II16, keep apart chamber 17, positive pressure chamber 18 with be equipped with the sealing washer between the front end housing 3 respectively.

Further, the inboard of rear end cap 2 be equipped with respectively with water chamber I15, water chamber II16, keep apart chamber 17, positive pressure chamber 18 assorted boss, the periphery of water chamber I15, water chamber II16, keep apart chamber 17, positive pressure chamber 18 with be equipped with the sealing washer between the rear end cap 2 respectively.

Example 8:

on the basis of any of the above embodiments, the lower ends of the ink supply chamber 11 and the return ink chamber 12 of the ink cartridge body 1 are respectively provided with an electromagnetic valve 6, and the electromagnetic valves 6 are respectively communicated with the ink through holes of the ink supply chamber 11 and the return ink chamber 12.

Further, a through groove 19 is formed in the lower end of the cartridge body 1, and the solenoid valve 6 is mounted to the lower end of the cartridge body 1 by a screw and a square nut.

In this embodiment, the installation position of the solenoid valve 6 is flexibly adjustable due to the arrangement of the through groove 19, and the solenoid valve 6 is fixedly installed at the lower end of the ink cartridge body 1 through a screw and a square nut arranged in the through groove 19, so that the solenoid valve 6 is more firmly installed on the ink cartridge body 1 made of aluminum than the solenoid valve 6 is directly installed on the ink cartridge body made of aluminum.

It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described of illustrated herein.

Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented in other different ways, such as by rotating it 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.

In the foregoing detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like symbols typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A kind of ink-jet printer uses the second grade ink horn, characterized by that: the ink box comprises an ink box body (1), and a rear end cover (2) and a front end cover (3) which are sealed and covered with the ink box body (1) respectively, wherein an ink supply cavity (11) and a backflow ink cavity (12) which are respectively positioned at the left side and the right side of the ink box body are arranged in the ink box body (1), a plurality of ink through holes are respectively arranged at the bottoms of the ink supply cavity (11) and the backflow ink cavity (12), liquid level sensors for detecting the ink amount in the ink cavity are respectively arranged in the ink supply cavity (11) and the backflow ink cavity (12), a negative pressure cavity I (13) communicated with the ink supply cavity (11) is arranged above the ink supply cavity (11), and a negative pressure cavity II (14) communicated with the backflow ink cavity (12) is arranged above the backflow ink cavity; supply china ink chamber (11) with be equipped with constant temperature water cavity between backward flow china ink chamber (12), constant temperature water cavity and constant temperature water system are linked together, constant temperature water cavity is including being located supply china ink chamber (11) right side water cavity I (15) and being located backward flow china ink chamber (12) left water cavity II (16), water cavity I (15) with be equipped with between water cavity II (16) and keep apart chamber (17), the top of keeping apart chamber (17) is equipped with rather than positive pressure chamber (18) that are linked together, keep apart chamber (17) and be used for the holding washing liquid, the bottom of keeping apart chamber (17) is equipped with a plurality of liquid holes that lead to, it is equipped with level sensor in chamber (17) to keep apart, level sensor includes low level sensor III (208) and high level sensor III (209).

2. A secondary ink cartridge for an ink jet printer according to claim 1, wherein: the ink return cavity (12) is communicated with a main ink tank of the printer, the ink return cavity (12) is communicated with one end of a degassing device, and the other end of the degassing device is communicated with the ink supply cavity (11).

3. A secondary ink cartridge for an ink jet printer according to claim 2, wherein: the liquid level sensors in the ink return cavity (12) comprise a low liquid level sensor II (204) and a high liquid level sensor II (205).

4. A secondary ink cartridge for an ink jet printer according to claim 3, wherein: be equipped with ink pipe II (5) in backward flow ink chamber (12), ink pipe II (5) install in between front end housing (3) and rear end cap (2), with front end housing (3) mutually perpendicular and highly be less than low level sensor II (204), the bottom of ink pipe II (5) is equipped with a plurality of through-holes II.

5. A secondary ink cartridge for an ink jet printer according to claim 4, wherein: an ink inlet joint I (301) is installed on the outer side of the front end cover (3), an ink inlet hole (311) is formed in the inner side of the front end cover (3), the ink inlet hole (311) is communicated with the ink inlet joint I (301), the ink tube II (5) is installed in the ink inlet hole (311), and the diameter of the ink inlet hole (311) is larger than that of the ink tube II (5).

6. A secondary ink cartridge for an ink jet printer according to claim 5, wherein: an ink outlet joint (302) is installed on the outer side of the front end cover (3), the ink outlet joint (302) is communicated with an ink tube II (5), and a plurality of through holes III are formed in the upper end of one end portion, close to the ink inlet hole (311), of the ink tube II (5).

7. A secondary ink cartridge for an ink jet printer according to claim 6, wherein: the interval between the through holes II at the end of the ink tube II (5), which is far away from the ink inlet hole (311), is smaller than the interval between the through holes II at the end close to the ink inlet hole (311).

8. A secondary ink cartridge for an ink jet printer according to claim 6, wherein: the liquid level sensors in the ink supply cavity (11) comprise a low liquid level sensor I (201), a middle liquid level sensor (202) and a high liquid level sensor I (203).

9. A secondary ink cartridge for an ink jet printer according to claim 8, wherein: be equipped with china ink pipe I (4) in confession china ink chamber (11), china ink pipe I (4) install in between front end housing (3) and rear end cap (2), with front end housing (3) mutually perpendicular and highly be less than low level sensor I (201), be equipped with a plurality of through-holes I that run through about on china ink pipe I (4).

10. A secondary ink cartridge for an ink jet printer according to claim 9, wherein: an ink inlet joint II (303) is installed on the outer side of the front end cover (3), an ink tube installation hole II (312) is formed in the inner side of the front end cover (3), and one end of an ink tube I (4) is installed in the ink tube installation hole II (312) and communicated with the ink inlet joint II (303).

11. A secondary ink cartridge for an ink jet printer according to claim 10, wherein: the interval between the through holes I at the end of the ink tube I (4) far away from the ink tube mounting hole II (312) is smaller than the interval between the through holes I at the end of the ink tube mounting hole II (312).

12. A secondary ink cartridge for an ink jet printer according to claim 11, wherein: the inner side of the front end cover (3) is provided with bosses which are respectively matched with an ink supply cavity (11), a backflow ink cavity (12), a negative pressure cavity I (13) and a negative pressure cavity II (14) of the ink cartridge body (1), and sealing rings are respectively arranged between the peripheries of the ink supply cavity (11), the backflow ink cavity (12), the negative pressure cavity I (13) and the negative pressure cavity II (14) and the front end cover (3).

13. A secondary ink cartridge for an ink jet printer according to claim 11, wherein: bosses respectively matched with the ink supply cavity (11), the backflow ink cavity (12), the negative pressure cavity I (13) and the negative pressure cavity II (14) of the ink box body (1) are arranged on the inner side of the rear end cover (2), and sealing rings are respectively arranged between the peripheries of the ink supply cavity (11), the backflow ink cavity (12), the negative pressure cavity I (13) and the negative pressure cavity II (14) and the rear end cover (2).

14. A secondary ink cartridge for an ink jet printer as claimed in claim 1, wherein: the utility model discloses a water treatment device, including front end cover (3), front end cover (3) outside is installed water supply connector (306), water supply connector (306) one end with water cavity I (15) are linked together, the other end is linked together with constant temperature water system's delivery port, water supply connector (307) are installed in the outside of front end cover (3), the one end of water supply connector (307) with water cavity II (16) are linked together, the other end is linked together with constant temperature water system's water inlet, water cavity I (15) with water cavity II (16) are close to the bottom of rear end cover (2) one end is equipped with logical water mouth respectively.

15. A secondary ink cartridge for an ink jet printer according to claim 14, wherein: the water circulation joint I (310) is installed at the lower end of the front end cover (3), the water circulation joint I (310) is communicated with the water cavity I (15), the water circulation joint II (210) is installed at the lower end of the rear end cover (2), and the water circulation joint II (210) is communicated with the water cavity II (16).

16. A secondary ink cartridge for an ink jet printer according to claim 1, wherein: and a cleaning liquid joint (309) is arranged on the outer side of the front end cover (3), and the cleaning liquid joint (309) is communicated with the isolation cavity (17).

17. A secondary ink cartridge for an ink jet printer according to claim 16, wherein: the inboard of front end housing (3) be equipped with respectively with water cavity I (15), water cavity II (16), keep apart chamber (17), malleation chamber (18) assorted boss, water cavity I (15), water cavity II (16), keep apart the periphery in chamber (17), malleation chamber (18) and be equipped with the sealing washer between front end housing (3) respectively.

18. A secondary ink cartridge for an ink jet printer according to claim 16, wherein: the inboard of rear end cap (2) be equipped with respectively with water cavity I (15), water cavity II (16), keep apart chamber (17), malleation chamber (18) assorted boss, water cavity I (15), water cavity II (16), keep apart the periphery in chamber (17), malleation chamber (18) and be equipped with the sealing washer between rear end cap (2) respectively.

19. A secondary ink cartridge for an ink jet printer according to claim 1, wherein: the lower ends of an ink supply cavity (11) and a backflow ink cavity (12) of the ink box body (1) are respectively provided with an electromagnetic valve (6), and the electromagnetic valves (6) are respectively communicated with ink through holes of the ink supply cavity (11) and the backflow ink cavity (12).

20. A secondary ink cartridge for an ink jet printer according to claim 19, wherein: the lower end of the ink box body (1) is provided with a through groove (19), and the electromagnetic valve (6) is arranged at the lower end of the ink box body (1) through a screw and a square nut.