CN109397882B - Cleaning device and method for ink-jet printing nozzle - Google Patents
Cleaning device and method for ink-jet printing nozzle Download PDFInfo
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- CN109397882B CN109397882B CN201811373721.1A CN201811373721A CN109397882B CN 109397882 B CN109397882 B CN 109397882B CN 201811373721 A CN201811373721 A CN 201811373721A CN 109397882 B CN109397882 B CN 109397882B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/16552—Cleaning of print head nozzles using cleaning fluids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Ink Jet (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
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Abstract
The embodiment of the application provides a cleaning device and a cleaning method for an ink-jet printing nozzle, which are used for simplifying a nozzle cleaning flow, improving the wettability of ink and the nozzle and improving the spitting uniformity of ink-jet printing ink from a nozzle. The embodiment of this application provides a belt cleaning device of inkjet printing shower nozzle, the device includes: the device comprises a connecting part used for connecting the spray head of the ink-jet printer and an evacuating unit connected with the connecting part.
Description
Technical Field
The application relates to the technical field of ink-jet printing, in particular to a cleaning device and a method for an ink-jet printing nozzle.
Background
The organic light emitting display device has the advantages of self-luminescence, fast response, wide viewing angle, high brightness, bright color, lightness and thinness, etc., and thus becomes an important display technology. At present, an organic light emitting layer of the organic light emitting display device can be formed in an ink jet printing mode, poor wettability of ink and an ink jet printing nozzle can cause ink to be incapable of wetting the whole nozzle, and uniformity of ink spitting can be affected by subsequently utilizing the nozzle to perform ink jet printing. Before ink is filled into a nozzle for ink-jet printing, the nozzle is usually cleaned, in order to make the ink wet the pipelines and nozzles in the nozzle well, in the prior art, the cleaning of the nozzle needs to replace different solvents, and the solvent is discharged from the nozzle by using printer control software, so that the ink soaks all the pipelines to discharge all air, and the ink wets the pipelines and the nozzle well, so as to achieve the optimal ink-jet state, for example, the sequential filling sequence of benzyl riddle, toluene, ink solvent and ink can be adopted. However, in the method for cleaning the nozzle provided by the prior art, most of the used solvents are controlled poisons, the operation time for cleaning the nozzle is long, and it is generally impossible to determine whether the cleaning process completely discharges air and wets all the pipelines and nozzles. In summary, the method for cleaning the nozzle in the prior art is complex, the cleaning liquid is not easy to obtain, and the wettability of the ink and the nozzle is not good.
Disclosure of Invention
The embodiment of the application provides a cleaning method and a cleaning device for an ink-jet printing nozzle, a display panel and a preparation method of the display panel, and aims to simplify a nozzle cleaning process, improve the wettability of ink and the nozzle and improve the spitting uniformity of ink-jet printing ink from a nozzle.
The embodiment of this application provides a belt cleaning device of inkjet printing shower nozzle, the device includes: the device comprises a connecting part used for connecting the spray head of the ink-jet printer and an evacuating unit connected with the connecting part.
The utility model provides a belt cleaning device of shower nozzle is printed in inkjet, owing to including the evacuation unit, thereby can change the inside atmospheric pressure of shower nozzle through the mode of evacuation, force the inside solvent that is located the shower nozzle to flow from the shower nozzle, make the air simultaneously, aqueous vapor is discharged from the nozzle, the mode that changes the inside atmospheric pressure of shower nozzle through the evacuation can make the more easily moist shower nozzle of solvent, can promote the infiltration nature of solvent and shower nozzle, improve the homogeneity that the inkjet printing ink was vomited from the nozzle, and then promote the inkjet and print the homogeneity that forms film thickness, promote the display effect who shows the product, promote user experience. Moreover, the cleaning device for the ink-jet printing nozzle can only utilize one cleaning agent to wet the nozzle without adopting a plurality of cleaning agents to replace the wetting nozzle, can simplify the nozzle cleaning flow, realizes the quick cleaning of the nozzle, can further realize the quick replacement of ink, and can save the time of ink-jet printing.
Optionally, the evacuation unit comprises: the liquid storage device comprises a vacuumizing part, a liquid storage part, a first passage and a second passage which are mutually connected through the liquid storage part, wherein the first passage is connected with the connecting part, and the second passage is connected with the vacuumizing part.
Optionally, the evacuation unit comprises: the device comprises a vacuumizing part, a liquid storage part, a three-way control part, and a third passage, a fourth passage and a fifth passage which are connected with each other through the three-way control part, wherein the connecting part is connected with the third passage, the vacuumizing part is connected with the fourth passage, and the liquid storage part is connected with the fifth passage; the three-way control component is used for: and controlling the third passage to be communicated with the fourth passage or controlling the third passage to be communicated with the fifth passage.
The cleaning device of shower nozzle is printed in inkjet that this application embodiment provided, when needs carry out evacuation processing, control through three-way control part door the third passageway with the fourth passageway switches on, and is right through fourth passageway and third passageway the shower nozzle carries out evacuation processing to can change the inside atmospheric pressure of shower nozzle, make and force the solvent that is located the shower nozzle inside to flow from the shower nozzle, make air, aqueous vapor discharge from the nozzle simultaneously, before the inside solvent of shower nozzle flows out to three-way control part, control through three-way control part door the third passageway with the fifth passageway switches on, makes the solvent flow to holding the liquid part. The mode that changes the inside atmospheric pressure of shower nozzle through the evacuation can be so that the solvent wets the shower nozzle more easily, can promote the infiltration nature of solvent and shower nozzle, improves the homogeneity that ink-jet printing ink was spit out from the nozzle, and then promotes the homogeneity that ink-jet printing formed film thickness, promotes the display effect who shows the product, promotes user experience. Moreover, the cleaning device for the ink-jet printing nozzle can only utilize one cleaning agent to wet the nozzle without adopting a plurality of cleaning agents to replace the wetting nozzle, can simplify the nozzle cleaning flow, realizes the quick cleaning of the nozzle, can further realize the quick replacement of ink, and can save the time of ink-jet printing.
Optionally, the first via is a transparent via.
Optionally, the third via is a transparent via.
This makes it possible to determine whether or not the substance discharged from the head includes only the solvent using the transparent path.
Optionally, the cleaning device further comprises: an optical detection section including a light source and a light shift amount detection unit, the optical detection section being configured to: the light emitted by the light source is controlled to be incident on the transparent passage and emergent from the transparent passage, and the light offset quantity emergent from the transparent passage is detected.
The cleaning device that this application embodiment provided is owing to be provided with optical detection part to whether the solvent that can be more accurate definite follow shower nozzle outflow includes the bubble, whether thoroughly moist of judgement shower nozzle that can be more accurate.
Optionally, the cleaning device further comprises: a solvent detection unit and a control unit; the solvent detection component is used for: determining whether the solvent flowing out of the spray head flows to a preset position of the third passage; the control component is configured to: when the solvent flows to the preset position, the three-way control part is controlled to enable the third passage and the fifth passage to be communicated and enable the third passage and the fourth passage to be closed.
The cleaning device provided by the embodiment of the application is provided with the solvent detection part and the control part, so that the automation of the control of the cleaning device can be realized, and the cleaning of the spray head of the ink-jet printer is more convenient.
The method for cleaning the ink-jet printing nozzle by adopting the cleaning device provided by the embodiment of the application comprises the following steps:
connecting the cleaning device with the spray head through the connecting part;
and vacuumizing by using the vacuumizing unit so that the solvent in the spray head flows out of the spray head.
The cleaning method of inkjet printing shower nozzle that this application embodiment provided, it is right owing to utilize the evacuation part the shower nozzle carries out evacuation processing, thereby can change the inside atmospheric pressure of shower nozzle, make the solvent that is located the shower nozzle inside compulsorily flow from the shower nozzle, make the air simultaneously, aqueous vapor is discharged from the nozzle, thereby can make the more easily moist shower nozzle of solvent, can promote the infiltration nature of solvent and shower nozzle, improve the homogeneity that inkjet printing ink was spitted out from the nozzle, and then promote the homogeneity that inkjet printing formed film thickness, promote the display effect who shows the product, promote user experience. Moreover, the cleaning method of the ink-jet printing nozzle provided by the embodiment of the application can be used for wetting the nozzle only by using one cleaning agent without adopting a plurality of cleaning agent replacements to wet the nozzle, so that the nozzle cleaning process can be simplified, the nozzle can be quickly cleaned, ink can be quickly replaced, and the time for ink-jet printing can be saved.
Optionally, the evacuation unit comprises: the evacuating device comprises an evacuating component, a liquid storage component, a first passage and a second passage, wherein the evacuating unit is used for evacuating so that the solvent in the spray head flows out of the spray head, and the evacuating device specifically comprises:
vacuumizing by using the vacuumizing part, so that the solvent in the spray head flows out of the spray head, and the solvent flows to the liquid storage part through the first passage;
alternatively, the vacuum unit includes: the liquid storage device comprises a vacuumizing component, a liquid storage component, a three-way control component, and a third passage, a fourth passage and a fifth passage which are connected with each other through the three-way control component, wherein the vacuumizing unit is used for vacuumizing so that a solvent in the spray head flows out of the spray head, and the liquid storage device specifically comprises:
controlling the three-way control component to enable the third passage and the fourth passage to be communicated and the fifth passage and the fourth passage to be closed, and vacuumizing by using the vacuumizing component to enable the solvent in the sprayer to flow out of the sprayer;
controlling the three-way control means so that the third passage and the fourth passage are closed and the third passage and the fifth passage are communicated, so that the solvent flows to a liquid storage means.
Optionally, the method further comprises: determining whether the solvent flowing out of the spray head includes bubbles; filling the nozzle with ink when it is determined that the solvent flowing out of the nozzle does not include bubbles;
the first passage is a transparent passage; the cleaning device comprises an optical detection component, determines whether the solvent flowing out of the spray head comprises bubbles, and specifically comprises the following steps:
controlling light emitted by the light source to be incident on the first passage;
detecting the offset of the light emitted from the first passage, determining whether the offset is equal to a preset offset, and if so, determining that the solvent flowing out of the spray head does not contain bubbles; the preset offset is as follows: a shift amount of light emitted from the transparent passage when only the solvent flowing out from the head is included in the transparent passage;
or, the third passage is a transparent passage; the cleaning device comprises an optical detection component, determines whether the solvent flowing out of the spray head comprises bubbles, and specifically comprises the following steps:
controlling light emitted by the light source to be incident on the third passage;
detecting the offset of the light emitted from the third passage, determining whether the offset is equal to a preset offset, and if so, determining that the solvent flowing out of the spray head does not contain bubbles; the preset offset is as follows: when the transparent passage includes only the solvent flowing out from the head, the amount of shift of the light emitted from the transparent passage is small.
According to the cleaning method of the spray head, the optical detection component is utilized, so that whether the solvent flowing out of the spray head comprises bubbles can be determined more accurately, and whether the spray head is thoroughly wetted can be judged more accurately.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cleaning device for an inkjet printing head according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another cleaning apparatus for an inkjet print head according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a cleaning apparatus for an inkjet print head according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a cleaning apparatus for an inkjet print head according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a cleaning apparatus for an inkjet print head according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a method for cleaning an inkjet print head according to an embodiment of the present disclosure.
Detailed Description
The cleaning device for the inkjet printing nozzle provided by the embodiment of the application is shown in fig. 1-5, and the cleaning device 5 comprises: a connecting part 6 for connecting the ink-jet printer nozzle 1 and a vacuum pumping unit 19.
It should be noted that, the inside of the nozzle to be cleaned includes air and may also include residual moisture, and in the process of cleaning the nozzle, when the air or moisture is not completely discharged, after the ink is filled, the wettability of the ink and the nozzle is poor, and in the process of forming a film by subsequent inkjet printing, the ink is not uniformly sprayed, so that the thickness of the formed film is not uniform, and when an inkjet printing process is adopted to prepare an OLED light-emitting layer, the thickness of the light-emitting layer is not uniform, which affects the display effect.
The utility model provides a belt cleaning device of shower nozzle is printed in inkjet, owing to including the evacuation unit, thereby can change the inside atmospheric pressure of shower nozzle through the mode of evacuation, force the inside solvent that is located the shower nozzle to flow from the shower nozzle, make the air simultaneously, aqueous vapor is discharged from the nozzle, the mode that changes the inside atmospheric pressure of shower nozzle through the evacuation can make the more easily moist shower nozzle of solvent, can promote the infiltration nature of solvent and shower nozzle, improve the homogeneity that the inkjet printing ink was vomited from the nozzle, and then promote the inkjet and print the homogeneity that forms film thickness, promote the display effect who shows the product, promote user experience. Moreover, the cleaning device for the ink-jet printing nozzle can only utilize one cleaning agent to wet the nozzle without adopting a plurality of cleaning agents to replace the wetting nozzle, can simplify the nozzle cleaning flow, realizes the quick cleaning of the nozzle, can further realize the quick replacement of ink, and can save the time of ink-jet printing.
Optionally, in the cleaning apparatus shown in fig. 1 provided in this embodiment of the present application, the vacuum unit 19 includes: a vacuum-pumping means 8, a liquid-storing means 9, and a first passage 20 and a second passage 21 connected to each other through the liquid-storing means 9, wherein the first passage 20 is connected to the connecting means 6, and the second passage 21 is connected to the vacuum-pumping means 8.
Optionally, the connection between the second passage and the liquid storage member is such that the solvent flowing out of the head cannot reach the second passage after flowing into the liquid storage member.
In this way, the vacuumizing component is used for vacuumizing, so that the solvent flows into the liquid storage component through the first passage, the solvent cannot be sucked into the vacuumizing part even if the vacuumizing component does not stop working, and the phenomenon that the solvent is sucked into the vacuumizing component to influence the work of the cleaning device can be avoided.
Alternatively, in fig. 1, the junction of the second passage and the reservoir member is located at the top of the reservoir member.
In fig. 1 as an example, the head 1 includes: a reservoir 2, a nozzle 3 and a flow-through line 4 communicating the reservoir 2 with said nozzle 3. When the air is not exhausted, the solvent is exhausted together with the air, and if the air is exhausted, the substance exhausted from the nozzle only comprises the solvent.
Optionally, the first via is a transparent via.
This makes it possible to determine whether or not the substance discharged from the nozzle includes only the solvent using the transparent passage. For example, whether or not there are bubbles in the discharged solvent can be observed through the transparent passage, and if there are no bubbles in the discharged solvent, it can be considered that the air in the head is exhausted, the solvent completely wets the head, and then ink filling can be performed. Specifically, a material resistant to solvent corrosion may be selected as the material of the transparent passage.
Alternatively, as shown in fig. 2, on the basis of the cleaning device shown in fig. 1, the cleaning device 5 further includes: an optical detection component 13, the optical detection component 13 including a light source 14 and a light shift amount detection unit 15, the optical detection component 13 being configured to: the light emitted from the control light source 14 enters the transparent passage 16 and exits the transparent passage 16, and the amount of light shift exiting the transparent passage 16 is detected.
It should be noted that, when the solvent flows into the transparent passage, the light emitted from the light source enters the transparent passage, and the angle of refraction of the light is different between when the bubble is present in the solvent and when the bubble is absent in the solvent, and therefore, the amount of light shift emitted from the transparent passage when the bubble is present in the solvent is different from the amount of light shift emitted from the transparent passage when the bubble is absent in the solvent, and whether or not the bubble is included in the solvent can be determined based on the detected amount of light shift. The cleaning device that this application embodiment provided is owing to be provided with optical detection part to whether the solvent that can be more accurate definite follow shower nozzle outflow includes the bubble, whether thoroughly moist of judgement shower nozzle that can be more accurate.
Of course, the vacuum unit can also adopt other arrangement modes.
Alternatively, as shown in fig. 3, in the cleaning apparatus provided in the embodiment of the present application, the vacuum unit 19 includes: a vacuum pumping part 8, a liquid storage part 9, a three-way control part 10, and a third passage 7, a fourth passage 11 and a fifth passage 12 which are connected with each other through the three-way control part 10, wherein the connecting part 6 is connected with the third passage 7, the vacuum pumping part 8 is connected with the fourth passage 11, and the liquid storage part 9 is connected with the fifth passage 12; the three-way control part 10 is used for: and controlling the third passage 7 to be communicated with the fourth passage 11 or controlling the third passage 7 to be communicated with the fifth passage 12.
When the cleaning device of the ink-jet printing nozzle provided by the embodiment of the application needs to be vacuumized, the third passage is controlled to be communicated with the fourth passage through a three-way control part, the spray head is vacuumized through the fourth passage and the third passage, thereby changing the air pressure inside the spray head, forcing the solvent inside the spray head to flow out of the spray head, simultaneously, air and water vapor are discharged from the nozzle, when the solvent in the spray head flows out to the front of the three-way control part, the third channel is controlled to be communicated with the fifth channel through a three-way control component, so that the solvent flows to the liquid storage component, and the third passage and the fourth passage are controlled to be closed by a three-way control part, so that the solvent is prevented from being sucked into a vacuumizing part, the cleaning device of shower nozzle that this application embodiment provided promptly can realize the evacuation and avoid the solvent to inhale evacuation part through tee bend control unit. The mode that changes the inside atmospheric pressure of shower nozzle through the evacuation can be so that the solvent wets the shower nozzle more easily, can promote the infiltration nature of solvent and shower nozzle, improves the homogeneity that ink-jet printing ink was spit out from the nozzle, and then promotes the homogeneity that ink-jet printing formed film thickness, promotes the display effect who shows the product, promotes user experience. Moreover, the cleaning device for the ink-jet printing nozzle can only utilize one cleaning agent to wet the nozzle without adopting a plurality of cleaning agents to replace the wetting nozzle, can simplify the nozzle cleaning flow, realizes the quick cleaning of the nozzle, can further realize the quick replacement of ink, and can save the time of ink-jet printing.
Optionally, the third via is a transparent via.
This makes it possible to determine whether or not the substance discharged from the nozzle includes only the solvent using the transparent passage. For example, whether or not there are bubbles in the discharged solvent can be observed through the transparent passage, and if there are no bubbles in the discharged solvent, it can be considered that the air in the head is exhausted, the solvent completely wets the head, and then ink filling can be performed.
Specifically, a material resistant to solvent corrosion may be selected as the material of the transparent passage.
Optionally, as shown in fig. 4, on the basis of the cleaning apparatus shown in fig. 3 provided in the embodiment of the present application, the cleaning apparatus 5 further includes: an optical detection component 13, the optical detection component 13 including a light source 14 and a light shift amount detection unit 15, the optical detection component 13 being configured to: the light emitted from the control light source 14 enters the transparent passage 16 and exits the transparent passage 16, and the amount of light shift exiting the transparent passage 16 is detected.
It should be noted that, when the solvent flows into the transparent passage, the light emitted from the light source enters the transparent passage, and the angle of refraction of the light is different between when the bubble is present in the solvent and when the bubble is absent in the solvent, and therefore, the amount of light shift emitted from the transparent passage when the bubble is present in the solvent is different from the amount of light shift emitted from the transparent passage when the bubble is absent in the solvent, and whether or not the bubble is included in the solvent can be determined based on the detected amount of light shift. The cleaning device that this application embodiment provided is owing to be provided with optical detection part to whether the solvent that can be more accurate definite follow shower nozzle outflow includes the bubble, whether thoroughly moist of judgement shower nozzle that can be more accurate.
Optionally, as shown in fig. 5, the cleaning device further includes: a solvent detection section 17 and a control section (not shown); the solvent detection section 17 is configured to: determining whether the solvent flowing out of the head flows to a preset position 18 of the third path; the control component is configured to: when the solvent flows to the preset position 18, the three-way control part 10 is controlled to enable the third passage 7 and the fifth passage 12 to be communicated and enable the third passage 7 and the fourth passage 11 to be closed. Because the cleaning device is provided with the solvent detection part and the control part, the automation of the control of the cleaning device can be realized, and the cleaning of the spray head of the ink-jet printer is more convenient.
Optionally, in the cleaning device shown in fig. 1 to 5 provided in the embodiment of the present application, the nozzle connecting part 6 is a nozzle cover for hermetically connecting the nozzle.
The material of the nozzle cap can be selected from Polytetrafluoroethylene (PTFE), for example. When the cleaning device provided by the embodiment of the present application is used to clean the nozzle, the vacuum pumping component performs vacuum pumping on the nozzle, and the vacuum pumping parameter may be, for example, 1 torr (torr). When the evacuation component includes a three-way control component, the three-way control component can be, for example, a three-way control valve.
Based on the same inventive concept, an embodiment of the present application further provides a method for cleaning an inkjet printing head by using the cleaning apparatus provided in the embodiment of the present application, as shown in fig. 6, the method includes:
s101, connecting the cleaning device with the spray head through the connecting part;
s102, vacuumizing by using the vacuumizing unit to enable the solvent in the spray head to flow out of the spray head.
The cleaning method of inkjet printing shower nozzle that this application embodiment provided, it is right owing to utilize the evacuation part the shower nozzle carries out evacuation processing, thereby can change the inside atmospheric pressure of shower nozzle, make the solvent that is located the shower nozzle inside compulsorily flow from the shower nozzle, make the air simultaneously, aqueous vapor is discharged from the nozzle, thereby can make the more easily moist shower nozzle of solvent, can promote the infiltration nature of solvent and shower nozzle, improve the homogeneity that inkjet printing ink was spitted out from the nozzle, and then promote the homogeneity that inkjet printing formed film thickness, promote the display effect who shows the product, promote user experience. Moreover, the cleaning method of the ink-jet printing nozzle provided by the embodiment of the application can be used for wetting the nozzle only by using one cleaning agent without adopting a plurality of cleaning agent replacements to wet the nozzle, so that the nozzle cleaning process can be simplified, the nozzle can be quickly cleaned, ink can be quickly replaced, and the time for ink-jet printing can be saved.
Optionally, the evacuation unit comprises: the step S102 of vacuumizing by using the vacuumizing unit to make the solvent in the nozzle flow out of the nozzle specifically includes:
vacuumizing by using the vacuumizing part, so that the solvent in the spray head flows out of the spray head, and the solvent flows to the liquid storage part through the first passage;
alternatively, the vacuum unit includes: the step S102 of vacuumizing by using the vacuumizing unit to make the solvent in the nozzle flow out of the nozzle specifically includes:
controlling the three-way control component to enable the third passage and the fourth passage to be communicated and to enable the third passage and the fourth passage to be closed, and vacuumizing by using the vacuumizing component to enable the solvent in the sprayer to flow out of the sprayer;
controlling the three-way control means so that the third passage and the fourth passage are closed and the third passage and the fifth passage are communicated, so that the solvent flows to a liquid storage means.
Optionally, the spray head connecting part is a spray head cover connected with the spray head in a sealing way; connecting the cleaning device with the spray head through the connecting part specifically comprises:
and the cleaning device is hermetically connected with the spray head through the spray head cover.
Optionally, the method further comprises: determining whether the solvent flowing out of the spray head includes bubbles; when it is determined that the solvent flowing out from the head does not include bubbles, the head is subjected to ink filling.
For example, the solvent in the transparent passage can be observed for the presence of bubbles, and if so, the air in the spray head is not discharged, otherwise, the air in the spray head is discharged. Further, the vacuum process may be performed a plurality of times until it is determined that the substance discharged from the nozzle includes only the solvent. Of course, other ways of determining whether the solvent flowing from the spray head includes bubbles may be used.
For a cleaning device in which the vacuum unit includes a vacuum pumping part, a liquid storage part, a first passage and a second passage, optionally, the first passage is a transparent passage; the cleaning device comprises an optical detection component, determines whether the solvent flowing out of the spray head comprises bubbles, and specifically comprises the following steps:
controlling light emitted by the light source to be incident on the first passage;
detecting the offset of the light emitted from the first passage, determining whether the offset is equal to a preset offset, and if so, determining that the solvent flowing out of the spray head does not contain bubbles; the preset offset is as follows: a shift amount of light emitted from the transparent passage when only the solvent flowing out from the head is included in the transparent passage;
for the cleaning device in which the vacuumizing unit comprises a vacuumizing part, a liquid storage part, a three-way control part, and a third passage, a fourth passage and a fifth passage which are connected with each other through the three-way control part, optionally, the third passage is a transparent passage; the cleaning device comprises an optical detection component, determines whether the solvent flowing out of the spray head comprises bubbles, and specifically comprises the following steps:
controlling light emitted by the light source to be incident on the third passage;
detecting the offset of the light emitted from the third passage, determining whether the offset is equal to a preset offset, and if so, determining that the solvent flowing out of the spray head does not contain bubbles; the preset offset is as follows: when the transparent passage includes only the solvent flowing out from the head, the amount of shift of the light emitted from the transparent passage is small.
According to the cleaning method of the spray head, the optical detection component is utilized, so that whether the solvent flowing out of the spray head comprises bubbles can be determined more accurately, and whether the spray head is thoroughly wetted can be judged more accurately.
Optionally, controlling the three-way control component to close the third passage and the fourth passage and to communicate the third passage and the fifth passage, so that the solvent flows to a liquid storage component specifically includes:
determining whether the solvent flows to a preset position in the third path;
and if so, controlling the three-way control part to close the third passage and the fourth passage and conduct the third passage and the fifth passage so that the solvent flows to a liquid storage part.
For example, a cleaning device provided with a solvent detection unit and a control unit may be used, and the solvent detection unit may be used to determine whether the solvent flowing out from the nozzle flows to a preset position of the third passage; by utilizing the control part, when the solvent flows to the preset position, the three-way control part is controlled to enable the third passage and the fifth passage to be communicated and enable the third passage and the fourth passage to be closed, so that the automation of controlling the cleaning device can be realized, and the cleaning of the spray head of the ink-jet printer is more convenient.
To sum up, the cleaning device and the method for the inkjet printing nozzle provided by the embodiment of the application change the air pressure inside the nozzle by utilizing the vacuumizing component, so that the solvent in the nozzle can be forced to flow out from the nozzle, air and water vapor are easily discharged completely in the process that the solvent flows through the circulation pipeline under the condition that the air pressure in the nozzle is changed, the solvent wets the nozzle more easily, the wettability of the solvent and the nozzle can be improved, the wettability of the ink and the nozzle after the ink is filled can be improved, and the uniformity of the inkjet printing ink discharged from the nozzle is improved. And, can only utilize a cleaner alright with wetting the shower nozzle, need not to adopt multiple cleaner replacement to come wetting shower nozzle, can simplify shower nozzle washing flow, realize the quick washing to the shower nozzle, and then can realize quick replacement ink, can save the time of inkjet printing.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (6)
1. An apparatus for cleaning an inkjet print head, the apparatus comprising: the connecting part is used for connecting the spray head of the ink-jet printer, and the vacuumizing unit is connected with the connecting part; the vacuum pumping unit includes: the device comprises a vacuumizing part, a liquid storage part, a three-way control part, and a third passage, a fourth passage and a fifth passage which are connected with each other through the three-way control part, wherein the connecting part is connected with the third passage, the vacuumizing part is connected with the fourth passage, and the liquid storage part is connected with the fifth passage; the three-way control component is used for: and controlling the third passage to be communicated with the fourth passage or controlling the third passage to be communicated with the fifth passage.
2. The apparatus of claim 1, wherein the third passageway is a transparent passageway.
3. The apparatus of claim 2, wherein the cleaning device further comprises: an optical detection section including a light source and a light shift amount detection unit, the optical detection section being configured to: the light emitted by the light source is controlled to be incident on the transparent passage and emergent from the transparent passage, and the light offset quantity emergent from the transparent passage is detected.
4. The apparatus of claim 1, wherein the cleaning device further comprises: a solvent detection unit and a control unit; the solvent detection component is used for: determining whether the solvent flowing out of the spray head flows to a preset position of the third passage; the control component is configured to: when the solvent flows to the preset position, the three-way control part is controlled to enable the third passage and the fifth passage to be communicated and enable the third passage and the fourth passage to be closed.
5. A method of cleaning an ink jet printing head using a cleaning apparatus according to any one of claims 1 to 4, the method comprising:
connecting the cleaning device with the spray head through the connecting part;
vacuumizing by using the vacuumizing unit so that the solvent in the spray head flows out of the spray head;
the vacuum pumping unit includes: the liquid storage device comprises a vacuumizing component, a liquid storage component, a three-way control component, and a third passage, a fourth passage and a fifth passage which are connected with each other through the three-way control component, wherein the vacuumizing unit is used for vacuumizing so that a solvent in the spray head flows out of the spray head, and the liquid storage device specifically comprises:
controlling the three-way control component to enable the third passage and the fourth passage to be communicated and to enable the third passage and the fourth passage to be closed, and vacuumizing by using the vacuumizing component to enable the solvent in the sprayer to flow out of the sprayer;
controlling the three-way control means so that the third passage and the fourth passage are closed and the third passage and the fifth passage are communicated, so that the solvent flows to the liquid storage means.
6. The method of claim 5, further comprising: determining whether the solvent flowing out of the spray head includes bubbles; filling the nozzle with ink when it is determined that the solvent flowing out of the nozzle does not include bubbles;
the third passage is a transparent passage; the cleaning device comprises an optical detection component, the optical detection component comprises a light source and a light deviation amount detection unit, whether the solvent flowing out of the spray head comprises bubbles is determined, and the method specifically comprises the following steps:
controlling light emitted by the light source to be incident on the third passage;
detecting the offset of the light emitted from the third passage, determining whether the offset is equal to a preset offset, and if so, determining that the solvent flowing out of the spray head does not contain bubbles; the preset offset is as follows: when the transparent passage includes only the solvent flowing out from the head, the amount of shift of the light emitted from the transparent passage is small.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811373721.1A CN109397882B (en) | 2018-11-19 | 2018-11-19 | Cleaning device and method for ink-jet printing nozzle |
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| CN201811373721.1A CN109397882B (en) | 2018-11-19 | 2018-11-19 | Cleaning device and method for ink-jet printing nozzle |
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| CN109397882A CN109397882A (en) | 2019-03-01 |
| CN109397882B true CN109397882B (en) | 2020-01-07 |
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| CN100584619C (en) * | 1994-09-16 | 2010-01-27 | 精工爱普生株式会社 | Ink cartridge for inkjet recording equipment |
| FR2814395B1 (en) * | 2000-09-26 | 2003-03-28 | Imaje Sa | METHOD AND DEVICE FOR CLEANING NOZZLES FOR INK-JET PRINTERS, AND PRINT HEAD AND PRINTER INCORPORATING SUCH A DEVICE |
| CN101225892B (en) * | 2008-02-21 | 2010-06-02 | 北京美科艺数码科技发展有限公司 | Three-way valve |
| JP5793728B2 (en) * | 2011-09-27 | 2015-10-14 | 株式会社Ｓｃｒｅｅｎホールディングス | Inkjet printing apparatus and purge method thereof |
| CN206733814U (en) * | 2017-05-27 | 2017-12-12 | 纳晶科技股份有限公司 | A kind of cleaning device of ink jet printing head |
| CN207535501U (en) * | 2017-12-08 | 2018-06-26 | 西斯特姆（中国）科技有限公司 | The improved structure of printing head cleaning device |
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| CN1494653A (en) * | 2001-04-16 | 2004-05-05 | ά | Optical bubble detection system |
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