CN215321488U

CN215321488U - Ink circulation device for ink-jet printer

Info

Publication number: CN215321488U
Application number: CN202121473667.5U
Authority: CN
Inventors: 单健; 闫峂; 王家远; 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: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-28
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to an ink circulating device for an ink-jet printer, which is arranged on a trolley frame, wherein the bottom of the trolley frame is provided with a spray head bottom plate, and a spray head is arranged on the spray head bottom plate and comprises a secondary ink box, an ink pump, a filter and a degassing device; the ink outlet of the secondary ink box is communicated with the ink inlet of the nozzle and is used for providing ink for the nozzle; the ink inlet of the ink pump is communicated with the ink outlet of the spray head and is used for providing power for the flow of the ink; the ink inlet of the filter is connected with the ink outlet of the ink pump and is used for filtering particles in the ink; one port of the degassing device is connected with the filter, and the other port of the degassing device is connected with the secondary ink box and used for removing bubbles in the ink. The utility model has the advantages of small volume, light weight, short circulation path, good circulation effect, long service life, clean and tidy pipeline arrangement and good ink heating effect.

Description

Ink circulation device for ink-jet printer

Technical Field

The utility model relates to the technical field of ink-jet printing equipment, in particular to an ink circulating device for an ink-jet printer.

Background

The ink jet printer ejects ink drops on a printing medium through a printing nozzle to complete the printing of patterns or characters. In the printing process, air bubbles may be mixed when ink flows through each component, and the air bubbles are easy to cause the empty spraying of the printing nozzle; 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.

Chinese patent CN206394248U discloses an ink circulation device, including first pair of ink horn, the vice ink horn of second, negative pressure gas cylinder and bubble removal device, first pair of ink horn and the vice ink horn of second are two looks isostructure ink horn, first pair of ink horn and the vice ink horn of second are installed on ink horn support welded plate, respectively set up a bubble removal device in the top both ends position of first pair of ink horn, be used for getting rid of the bubble in the ink, be close to both ends position respectively at the back of the vice ink horn of second and set up a negative pressure gas cylinder, the in-process ink that prints at the shower nozzle circulates through first pair of ink horn and the vice ink horn of second and flows, be used for preventing that the ink from deposiing or taking place the dry knot.

The ink circulation process is as follows: when ink-jet printing is needed, ink in the main ink tank is connected with an ink inlet of a bubble removing device of the bubble removing device through an ink pipe, bubbles in the ink are removed after the ink passes through the bubble removing device, and then the ink is discharged through an ink outlet of the bubble removing device, the ink outlet of the bubble removing device is connected with an ink inlet of a first auxiliary ink box of the first auxiliary ink box, the ink which passes through the bubbles is discharged into the first auxiliary ink box body through the ink inlet of the first auxiliary ink box, when the nozzle sprays the ink, the ink in the first auxiliary ink box body is discharged through the ink outlet of the first auxiliary ink box and flows to the nozzle below, the nozzle supplies the ink for printing pictures and texts and circulates other ink at the same time, the ink for circulation flows into a cavity of the auxiliary ink box from an ink inlet of a second auxiliary ink box below the second auxiliary ink box through the ink pipe, and then flows out into the main ink tank through the ink outlet of the second auxiliary ink box, and the mode is circulated, the ink can continuously flow, and the ink at the nozzle can not dry and enter air bubbles, so that the spraying quality of the printer can be ensured.

The above prior art has the following problems:

1) two auxiliary ink boxes need to be placed on each type of ink on the printing trolley, and meanwhile, a negative pressure gas cylinder needs to be prevented on the printing trolley, when the printing color is more and the type of the ink is increased, the volume and the weight of the printing trolley are increased, for scanning type printing, the printing trolley needs to perform scanning movement back and forth, and the weight of the printing trolley influences the movement stability of the printing trolley, so that the printing quality is influenced;

2) the ink circulation adopts the major cycle mode that main ink tank, remove bubble device, first vice ink horn, shower nozzle, the vice ink horn of second, main ink tank connect gradually makes the ink circulation flow, because the route of flowing through of ink is longer, components and parts such as various pumps, valves of route lead to the pollution of ink easily, not only make the power of the device that provides power for the ink flow high, consume greatly, and the ink receives more easily in the circulation flow of long path and pollutes or produces the bubble, lead to the circulation effect of ink unsatisfactory, and shorten the life of components and parts such as filter.

In addition, when printing the ink that viscosity is higher, often need heat the ink to reduce the viscosity of ink, guarantee the smoothness of inkjet, prior art generally installs the heating plate in the side of second grade ink horn or bottom, but still has a certain distance between second grade ink horn and the printing shower nozzle, when the temperature in printing place is lower, and the heating effect to the ink is still unsatisfactory.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an ink circulating device for an ink-jet printer, which aims to solve the defects in the prior art, and the technical problem to be solved by the utility model is realized by the following technical scheme.

An ink circulation device for an ink-jet printer is arranged on a trolley frame, a nozzle bottom plate is arranged at the bottom of the trolley frame, a nozzle is arranged on the nozzle bottom plate, and the ink circulation device comprises a two-stage ink box, an ink pump, a filter and a degassing device; the ink outlet of the secondary ink box is communicated with the ink inlet of the nozzle and is used for providing ink for the nozzle; the ink inlet of the ink pump is communicated with the ink outlet of the spray head and is used for providing power for the flow of the ink; the ink inlet of the filter is connected with the ink outlet of the ink pump and is used for filtering particles in the ink; and one port of the degassing device is connected with the ink outlet of the filter, and the other port of the degassing device is connected with the secondary ink box and used for removing bubbles in the ink.

Preferably, an ink box support is arranged at the rear upper part of the trolley frame, and the second-stage ink box is arranged on the ink box support.

Preferably, the rear side plate of the trolley frame is provided with an installation plate, and the ink pump, the filter and the degasser are sequentially installed on the installation plate from bottom to top.

Preferably, the upper end of the mounting plate is provided with a bending part, the bending part is provided with a groove, and the groove is used for limiting and fixing the degassing device.

Preferably, an ink distributing device is arranged on the bottom plate of the spray head and provided with an ink supply groove, and the ink supply groove is communicated with the ink outlet of the secondary ink box and the ink inlet of the spray head and used for distributing ink in the secondary ink box to the spray head.

Preferably, the ink shunting device further comprises a backflow groove, and the backflow groove is communicated with the ink outlet of the spray head and the ink inlet of the ink pump and is used for recovering the ink in the spray head and enabling the ink to flow back to the secondary ink box through the ink pump, the filter and the degassing device.

Preferably, the ink shunting device comprises a box body positioned in the middle, and the ink supply groove and the backflow groove are arranged on the side face of the box body from top to bottom.

Preferably, the number of the ink supply grooves and the number of the return grooves are two, and the two ink supply grooves and the two return grooves are symmetrically arranged on the front side surface and the rear side surface of the box body respectively.

Preferably, the front side and the rear side of the box body are respectively sealed and covered with a front cover and a rear cover, and the front cover, the rear cover and the box body cover form four mutually independent ink cavities after being covered with the rear cover.

Preferably, a heating plate is arranged on the outer side of the ink shunting device.

When the ink jet head is used, ink flows out of the main ink tank, flows into the ink inlet below the secondary ink box through components such as a pump and a filter, flows into the spray head from the ink outlet of the secondary ink box, the spray head performs ink jet work and circulates other ink at the same time, the circulated ink circulates into the secondary ink box through the ink pump, the filter and the degassing device, and the ink forms small circulation among the secondary ink box, the spray head, the ink pump, the filter and the degassing device.

The ink circulating device provided by the utility model solves the problem that when pigment ink is printed, precipitates are generated in a secondary ink box or other components to block an ink path, so that printing is smoother, and the replacement and maintenance cost caused by component blocking is saved; the ink circulation flow is short, the pollution of the ink in the flowing process and the generation of bubbles are reduced, the quality of the ink entering the spray head is better, and the service life of parts such as a filter and the like is prolonged.

The setting of ink diverging device for the china ink pipe between second grade ink horn and the shower nozzle reduces by a wide margin, makes the pipeline arrangement in the printing dolly cleaner and tidier.

When printing the higher ink of viscosity, because ink diverging device sets up in near printing the shower nozzle, the setting of heating plate can heat the ink before the shower nozzle is printed to the entering for the ink mobility that gets into and print the shower nozzle is better, more does benefit to going on smoothly of print jobs.

In summary, the utility model has the advantages of small volume, light weight, short circulation path, good circulation effect, long service life, clean and tidy pipeline arrangement and good ink heating effect.

Drawings

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

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is a schematic perspective view of a mounting plate according to the present invention;

FIG. 4 is an exploded view of the ink distribution device of the present invention;

FIG. 5 is a schematic front view of the case according to the present invention;

FIG. 6 is a schematic view of the cross-sectional structure A-A of FIG. 5;

FIG. 7 is a rear view of the front cover of the present invention;

FIG. 8 is a schematic view of the cross-sectional structure B-B in FIG. 7;

the reference numbers in the drawings are, in order: 1. the ink supply device comprises a trolley frame, 2, a sprayer bottom plate, 3, a sprayer, 4, a two-stage ink box, 5, an ink pump, 6, a filter, 7, a degasser, 8, an ink shunting device, 81, a box body, 811, an ink supply tank, 812, a backflow tank, 813, an ink supply channel, 82, a front cover, 821, a backflow channel, 83, a rear cover, 84, sealing rings I and 85, sealing rings II and 9, an ink box support, 10, a mounting plate, 101, a bending part, 102 and a groove.

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, an ink circulation device for an inkjet printer is installed on a trolley frame 1, a nozzle bottom plate 2 is arranged at the bottom of the trolley frame 1, and a nozzle 3 is installed on the nozzle bottom plate 2, and the improvement is that: comprises a two-stage ink box 4, an ink pump 5, a filter 6 and a degassing device 7; the ink outlet of the secondary ink box 4 is communicated with the ink inlet of the spray head 3 and is used for providing ink for the spray head 3; the ink inlet of the ink pump 5 is communicated with the ink outlet of the spray head 3 and is used for providing power for the flow of ink; the ink inlet of the filter 6 is connected with the ink outlet of the ink pump 5 and is used for filtering particles in the ink; one port of the degassing device 7 is connected with the ink outlet of the filter 6, and the other port is connected with the secondary ink tank 4, and is used for removing bubbles in the ink.

In this embodiment, the ink flows out from the main ink tank, flows into the ink inlet below the secondary ink tank 4 through the components such as the pump and the filter, and flows into the head 3 from the ink outlet of the secondary ink tank 4, the head 3 performs ink jet operation while circulating other ink, the circulating ink circulates into the secondary ink tank through the ink pump 5, the filter 6, and the deaerator 7, and the ink forms a small circulation among the secondary ink tank 4, the head 3, the ink pump 5, the filter 6, and the deaerator 7. The ink circulation device provided by the embodiment solves the problem that when pigment ink is printed, precipitates are generated in a secondary ink box or other components to block an ink path, so that printing is smoother, and replacement and maintenance cost caused by component blocking are saved; the ink circulation flow is short, the pollution and the bubble generation of the ink in the flowing process are reduced, the ink entering the spray head 3 is better in quality, and the service life of parts such as a filter is prolonged.

Further, an ink box support 9 is arranged at the rear upper part of the trolley frame 1, and the secondary ink box 4 is arranged on the ink box support 9.

Further, a mounting plate 10 is arranged on a rear side plate of the trolley frame 1, and the ink pump 5, the filter 6 and the degasser 7 are sequentially mounted on the mounting plate 10 from bottom to top.

Further, referring to fig. 3, a bent portion 101 is disposed at an upper end of the mounting plate 10, a groove 102 is disposed on the bent portion 101, and the groove 102 is used for limiting and fixing the degassing device 7.

Furthermore, mounting holes are formed in the two sides of the groove 102 of the bending portion 101 of the mounting plate 10, and the fixing piece and the mounting holes are connected and fixed to fix the degassing device 7 in the groove 102, or a binding belt penetrates through the mounting holes to fix the degassing device 7 in the groove 102.

Further, the mounting plate 10 is a hollow thin plate, so that on one hand, the weight can be reduced, and on the other hand, the heat dissipation of components such as an ink pump is facilitated.

Example 2:

in addition to embodiment 1, referring to fig. 4, an ink flow distribution device 8 is disposed on the head bottom plate 2, the ink flow distribution device 8 has an ink supply groove 811, and the ink supply groove 811 is communicated with an ink outlet of the secondary ink cartridge 4 and an ink inlet of the head 3, and is configured to distribute ink in the secondary ink cartridge 4 to the head 3.

Further, the ink diversion device 8 further has a return tank 812, and the return tank 812 is communicated with the ink outlet of the ejection head 3 and the ink inlet of the ink pump 5, and is used for recovering the ink in the ejection head 3 and returning the ink to the secondary ink cartridge 4 through the ink pump 5, the filter 6 and the degassing device 7.

In this embodiment, when the ink shunting device 8 is used, the ink tubes led out from the ink outlet of the secondary ink cartridge 4 are connected to the ink shunting device 8, so that the ink tubes are communicated with the ink supply groove 811, and a plurality of ink tubes led out from the ink shunting device 8 are connected to the ink inlet of the nozzle 3 adjacent to the ink shunting device 8 on the nozzle bottom plate 2, so as to perform the function of ink supply shunting, and the ink in the nozzle 3 except for the ink used for jet printing is communicated with the backflow groove 812 of the ink shunting device 8 through the ink outlet of the nozzle, so that the ink in the nozzle 3 is recovered and flows back to the secondary ink cartridge 4 through the ink pump 5, the filter 6 and the degassing device 7. The arrangement of the ink shunting device 8 ensures that when the ink is connected to the nozzles 3 from the secondary ink box 4, one or two ink pipes are only led out from the secondary ink box 4 to be connected to the ink shunting device instead of being connected to the ink inlet of each nozzle 3 from the ink outlet of the secondary ink box 4, and similarly, the ink reflowing from the nozzles 3 does not need to be connected with the ink pump 5 from the ink outlet of each nozzle 3, only needs to be connected with the ink shunting device from the ink outlet of the nozzle 3, an ink pipe is led out from the ink shunting device 8 and is connected with the ink pump 5, the ink shunting device 8 and the spray head 3 are both arranged on the spray head bottom plate 2 and are adjacent to each other, the ink tubes connected between the ink flow distribution device 8 and the heads 3 are short and have a height only slightly higher than the height of the printing heads or the ink flow distribution device, the number of ink tubes between the second-stage ink box 4 and the spray head 3 is greatly reduced, and the arrangement of pipelines in the printing trolley is tidier.

Further, referring to fig. 5, the ink flow distribution device 8 includes a box 81 located in the middle, and the ink supply groove 811 and the return groove 812 are disposed on the side of the box 81 up and down.

Further, the entire case 81 is a thin rectangular parallelepiped. The long thin structure enables the ink shunting device to meet the shunting and backflow effects of a row of printing nozzles, saves space and enables the structure to be more compact.

Further, the ink supply groove 811 is disposed above the return groove 812.

Further, referring to fig. 6, the number of the ink supply grooves 811 and the number of the return grooves 812 are two, and the two ink supply grooves and the two return grooves are symmetrically disposed on the front and rear sides of the box 81, respectively.

Further, the front and rear sides of the box 81 are respectively sealed and covered with a front cover 82 and a rear cover 83, and the front cover 82 and the rear cover 83 are covered with the box 81 so that the ink supply groove 811 and the return groove 812 form four independent ink chambers.

Further, a sealing ring I84 is respectively disposed between the periphery of the ink supply groove 811 and the front cover 82 and the rear cover 83, and a sealing ring II85 is respectively disposed between the periphery of the return groove 812 and the front cover 82 and the rear cover 83.

Furthermore, grooves for accommodating the sealing rings I84 and II85 are formed on the box 81.

Further, the materials of the sealing ring I84 and the sealing ring II85 are rubber.

Further, the ink shunting device 8 is arranged between the two rows of nozzles 3. Because of the both sides of ink diverging device 8 all can accomplish reposition of redundant personnel and backward flow, set up and can shunt and backward flow for the printing shower nozzle of both sides respectively between two rows of shower nozzles 3, save space more.

Further, referring to fig. 6, an ink supply channel 813 is disposed on the box 81, wherein one end of the ink supply channel 811 is connected to the box 81, and the other end of the ink supply channel 813 penetrates through the upper end surface of the box 81.

Further, the upper end surface of the box body 81 is provided with a joint I matched with the ink supply channel 813.

Further, the joint I and the box body 81 are integrally formed. The integrated into one piece structure can effectively prevent the ink leakage problem at the interface of the joint I and the box body 81, and prolong the service life of the ink shunting device 8.

Further, as shown in fig. 7 and 8, the front cover 82 and the rear cover 83 are respectively provided with a return passage 821, one end of which is communicated with the return groove 812, and the other end of which penetrates through the upper end surfaces of the front cover 82 and the rear cover 83.

Further, the upper end surfaces of the front cover 82 and the rear cover 83 are respectively provided with a joint II matching with the return passage 821.

Further, the joint II is integrally formed with the front cover 82, and the joint II is integrally formed with the rear cover 83. The integrated into one piece structure can effectively prevent the ink leakage problem at the interface of joint II and front cover 82 and back cover 83, and prolong the service life of ink shunting device 8.

Example 3:

in addition to embodiment 2, a heating plate is disposed outside the ink flow dividing device 8.

In this embodiment, when printing the higher ink of viscosity, because ink diverging device sets up in near printing the shower nozzle, the setting of heating plate can heat the ink before the shower nozzle is printed to the entering for the ink mobility that gets into and print the shower nozzle is better, more does benefit to going on smoothly of print jobs.

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 example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates 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 those illustrated or otherwise described 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 numerals 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. The utility model provides an ink circulating device for ink jet printer, installs on dolly frame (1), the bottom of dolly frame (1) is equipped with shower nozzle bottom plate (2), install shower nozzle (3), its characterized in that on shower nozzle bottom plate (2): comprises a two-stage ink box (4), an ink pump (5), a filter (6) and a degassing device (7); the ink outlet of the secondary ink box (4) is communicated with the ink inlet of the spray head (3) and is used for providing ink for the spray head (3); the ink inlet of the ink pump (5) is communicated with the ink outlet of the spray head (3) and is used for providing power for the flow of ink; the ink inlet of the filter (6) is connected with the ink outlet of the ink pump (5) and is used for filtering particles in the ink; one port of the degassing device (7) is connected with the ink outlet of the filter (6), and the other port of the degassing device is connected with the secondary ink box (4) for removing bubbles in the ink.

2. The ink circulation device for an ink jet printer according to claim 1, wherein: an ink box support (9) is arranged at the rear upper part of the trolley frame (1), and the secondary ink box (4) is arranged on the ink box support (9).

3. The ink circulation device for an ink jet printer according to claim 1, wherein: the rear side plate of the trolley frame (1) is provided with a mounting plate (10), and the ink pump (5), the filter (6) and the degasser (7) are sequentially mounted on the mounting plate (10) from bottom to top.

4. An ink circulation device for an ink jet printer according to claim 3, wherein: the upper end of mounting panel (10) is equipped with portion of bending (101), be equipped with recess (102) on portion of bending (101), recess (102) are used for right degasser (7) carry on spacingly and fixed.

5. The ink circulation device for an ink jet printer according to claim 1, wherein: be equipped with ink diverging device (8) on shower nozzle bottom plate (2), ink diverging device (8) have confession china ink groove (811), supply china ink groove (811) with the play china ink mouth of second grade ink horn (4) and the china ink mouth of advancing of shower nozzle (3) are linked together for shunt the ink in the second grade ink horn (4) to shower nozzle (3).

6. The ink circulation device for an ink jet printer according to claim 5, wherein: the ink shunting device (8) is also provided with a backflow groove (812), and the backflow groove (812) is communicated with the ink outlet of the spray head (3) and the ink inlet of the ink pump (5) and is used for recycling the ink in the spray head (3) and enabling the ink to flow back to the secondary ink box (4) through the ink pump (5), the filter (6) and the degassing device (7).

7. The ink circulation device for an ink jet printer according to claim 6, wherein: the ink shunting device (8) comprises a box body (81) positioned in the middle, and the ink supply groove (811) and the backflow groove (812) are vertically arranged on the side face of the box body (81).

8. The ink circulation device for an ink jet printer according to claim 7, wherein: the number of the ink supply grooves (811) and the number of the return grooves (812) are two, and the ink supply grooves and the return grooves are symmetrically arranged on the front side surface and the rear side surface of the box body (81) respectively.

9. The ink circulation device for an ink jet printer according to claim 8, wherein: the front side and the rear side of the box body (81) are respectively sealed and covered with a front cover (82) and a rear cover (83), and the front cover (82) and the rear cover (83) are covered with the box body (81) to enable the ink supply groove (811) and the backflow groove (812) to form four mutually independent ink cavities.

10. The ink circulation device for an ink jet printer according to claim 9, wherein: and a heating sheet is arranged on the outer side of the ink shunting device (8).