CN109501470A - A kind of ink feeding system and its control method, inkjet-printing device - Google Patents
A kind of ink feeding system and its control method, inkjet-printing device Download PDFInfo
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- CN109501470A CN109501470A CN201910028112.0A CN201910028112A CN109501470A CN 109501470 A CN109501470 A CN 109501470A CN 201910028112 A CN201910028112 A CN 201910028112A CN 109501470 A CN109501470 A CN 109501470A
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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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
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Abstract
The invention discloses a kind of ink feeding system and its control methods, inkjet-printing device, are related to inkjet printing technology field, and the thicknesses of layers printed to solve the problems, such as inkjet-printing device in the related technology is non-uniform and invents.The ink feeding system, including multiple sub- ink feeding systems, for every sub- ink feeding system, sub- ink feeding system includes main ink-feeding device, the first ink-feeding device, the first feeding path, ink-suuplying pump and control valve, main ink-feeding device includes the first ink storage chamber, first ink-feeding device includes the second ink storage chamber, the first end of first feeding path is connected with the first ink storage chamber, second end with the printing head of inkjet-printing device for being connected, along the direction of ink supply, ink-suuplying pump, the second ink storage chamber, control valve are set in turn on the first feeding path.The present invention can be used for the printing of luminous organic material or thin-film package organic material in pixel unit in OLED display panel.
Description
Technical field
The present invention relates to inkjet printing technology field more particularly to a kind of ink feeding system and its control methods, inkjet printing
Device.
Background technique
Inkjet printing technology is exactly first to generate small ink droplet, and ink gun is recycled tiny ink droplet to be directed to the position of setting
On, there is many advantages, such as print pattern is high-quality, level is abundant, details is clear.Currently, inkjet printing technology have application to it is aobvious
The manufacturing field of showing device, for example, in OLED (Organic Light-Emitting Diode, Chinese paraphrase are as follows: organic light emission
Diode) in panel manufacturing process, the preparation of novel R/G/B luminescence unit and TFE (Thin Film Encapsulation,
Chinese paraphrase are as follows: thin-film package) coating of organic film all applied to inkjet printing technology.
Inkjet printing is carried out on inkjet-printing device, and the ink material that inkjet-printing device is used at work is logical
It crosses ink feeding system and is delivered to printing head (print head), ink material is equably then printed to by glass by printing head
On glass substrate, film layer structure needed for formation process, it can be seen that, ink feeding system is composition portion important in inkjet-printing device
Point, the quality for whether being rationally directly related to inkjet-printing device printing of ink feeding system design.
The ink feeding system of one of the relevant technologies inkjet-printing device, as shown in Figure 1, including main ink-feeding device 01, the
One ink-feeding device 02, ink-suuplying pump 03 and feeding path 04, the number of main ink-feeding device 01 are two, and each main ink-feeding device 01 is
Including the first ink storage chamber 011, the first ink-feeding device 02 includes the second ink storage chamber 021, and one end of feeding path 04 passes through two confessions
Black branch 05 is connected with the first ink storage chamber 011 of two main ink-feeding devices 01 respectively, and the other end is used for and inkjet-printing device
Printing head be connected, ink-suuplying pump 03, the second ink storage chamber 021 are successively set on feeding path 04, each ink supply branch 05
On be all provided with a control valve 06.In printing, a control valve 06 is opened, another control valve 06 is closed, and is made in print procedure
From a main ink-feeding device 01 to printing head ink supply；It is another after the ink material in a main ink-feeding device 01 is finished
A main ink-feeding device 01 starts to printing head ink supply, meanwhile, operator can replace the main ink-feeding device 01 for filling ink
The main ink-feeding device 01 that above-mentioned ink is finished, so that inkjet-printing device be made to continue working down.
In the ink feeding system of the inkjet-printing device, after being finished due to the ink material in a main ink-feeding device 01
New main ink-feeding device 01 is needed replacing, then the ink in the ink supply branch 05 that the main ink-feeding device 01 after replacement is connected
It has been drained off, that is, is filled with gas in the ink supply branch 05, then the main ink-feeding device 01 after replacement is again to printing
When spray head ink supply, due to the effect that ink-suuplying pump 03 is aspirated, in the ink exported of the main ink-feeding device 01 and ink supply branch 05
Gas interaction, be easy to produce bubble, the bubble of generation enters in printing head through the second ink storage chamber 021, to make
It is uneven at printed films thickness degree, reduce the quality of inkjet-printing device printing.
Summary of the invention
The embodiment of the present invention provides a kind of ink feeding system and its control method, inkjet-printing device, for solving related skill
The non-uniform problem of the thicknesses of layers printed of inkjet-printing device in art.
In order to achieve the above objectives, in a first aspect, the embodiment of the invention provides a kind of ink feeding system, including multiple sub- ink supply
System, for each sub- ink feeding system, the sub- ink feeding system includes main ink-feeding device, the first ink-feeding device, the first confession
Black access, ink-suuplying pump and control valve, the main ink-feeding device include the first ink storage chamber, and first ink-feeding device includes the second storage
Black chamber, the first end of first feeding path are connected with first ink storage chamber, and second end is used for and inkjet-printing device
Printing head be connected, along the direction of ink supply, the ink-suuplying pump, second ink storage chamber, the control valve are set in turn in
On first feeding path.
Further, first ink-feeding device further include first pressure regulating device, in the first liquid level sensor extremely
One few, the first pressure regulating device is used to adjust the pressure in second ink storage chamber, first liquid level sensor
For measuring the liquid level in second ink storage chamber.
Further, in the case where first ink-feeding device includes first pressure regulating device, first pressure
Apparatus for adjusting force includes vacuum system and connecting line, and the first end of the connecting line is connected with the vacuum system, the
Two ends are connected with second ink storage chamber, so as to form access between second ink storage chamber and the vacuum system.
Further, it is connected at the top of the second end of the vacuum line and second ink storage chamber.
It further, further include the second ink-feeding device and the second feeding path, the first end of second feeding path is equal
It is connected with the second end of multiple first feeding paths, the second end of second feeding path is used to spray with the printing
Head is connected；Second ink-feeding device includes third ink storage chamber, and the third ink storage chamber is located on second feeding path,
And the position of the ink entrance of the third ink storage chamber is lower than the position of the ink outlet port of second ink storage chamber；Wherein, described
The ink entrance of three ink storage chambers passes through second feeding path, the ink outlet port of first feeding path and second ink storage chamber
It is connected.
Further, second ink-feeding device further includes second pressure regulating device, in the second liquid level sensor
At least one, the second pressure regulating device is used to adjust the pressure in the third ink storage chamber, second level sensing
Device is used to measure the liquid level in the third ink storage chamber.
Further, the main ink-feeding device further includes third pressure-regulating device, and the third pressure-regulating device is used
Pressure in adjusting first ink storage chamber.
Further, the third pressure regulating unit includes gas source and snorkel, the first end of the snorkel with
The gas source is connected, and second end is connected with first ink storage chamber.
Second aspect, the embodiment of the invention provides a kind of inkjet-printing devices, including in printing head and first aspect
The ink feeding system, in each sub- ink feeding system, the second end of first feeding path and the printing head
It is connected, and the position of the ink outlet port of second ink storage chamber is higher than the printing head；Wherein, second ink storage chamber
Ink outlet port is connected by first feeding path with the printing head.
Further, described in the case where the ink feeding system further includes the second ink-feeding device and the second feeding path
The position of the ink outlet port of third ink storage chamber is higher than the printing head；Wherein, the ink outlet port of the third ink storage chamber passes through described
Second feeding path is connected with the printing head.
The third aspect, the embodiment of the invention provides a kind of control method of ink feeding system as described in first aspect,
The following steps are included: multiple sub- ink feeding systems are one by one to printing head ink supply, when one of them described sub- ink feeding system is to described
When printing head ink supply, in other each sub- ink feeding systems, the control valve closing of at least one sub- ink feeding system,
Ink-suuplying pump is opened, until the liquid level in the second ink storage chamber corresponding to the ink-suuplying pump reaches preset value.
Ink feeding system provided in an embodiment of the present invention and its control method, inkjet-printing device, since ink feeding system includes
Multiple sub- ink feeding systems, sub- ink feeding systems multiple in this way can successively to printing head ink supply, when a sub- ink feeding system to
When printing head ink supply, other sub- ink feeding systems can start ink-suuplying pump and ink material is evacuated to second from the first ink storage chamber
It is stood in ink storage chamber, more bubble caused by change owner ink-feeding device can rupture elimination in standing in this way, then other
When sub- ink feeding system starts again at ink supply, in the second ink storage chamber through standing after ink can enter in printing head with
For printing, so as to avoid bubble from entering the non-uniform phenomenon of printing thicknesses of layers caused in printing head, in turn
Be conducive to improve the print quality of the inkjet-printing device；Simultaneously as ink enters the second ink storage chamber in sub- ink feeding system
Middle standing is to cut between sub- ink feeding system in this way in other sub- ink feeding systems normally to what is carried out during printing head ink supply
When changing jobs, ink enters the time for standing in the second ink storage chamber and being just not take up normal work, to guarantee that inkjet printing fills
The duration of printing is set, and then is conducive to improve the working efficiency of inkjet-printing device.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of one of the relevant technologies ink feeding system of inkjet-printing device；
Fig. 2 is the schematic diagram of the ink feeding system of the inkjet-printing device in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or
It is more than two.
In the description of invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be to be connected directly, the connection inside two elements can also be can be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
In a first aspect, the embodiment of the invention provides a kind of ink feeding systems, as shown in Fig. 2, including multiple sub- ink feeding systems
10, for every sub- ink feeding system 10, sub- ink feeding system 10 is logical including main ink-feeding device 1, the first ink-feeding device 2, the first ink supply
Road 3, ink-suuplying pump 4 and control valve 5, main ink-feeding device 1 include the first ink storage chamber 11, and the first ink-feeding device 2 includes the second ink storage chamber
21, the first end of the first feeding path 3 is connected with the first ink storage chamber 11, and second end is used for the printing with inkjet-printing device and sprays
Head (not shown) is connected, along the direction (namely flow direction of the ink in the first feeding path 3) of ink supply, ink supply
The 4, second ink storage chamber 21 of pump, control valve 5 are set in turn on the first feeding path 3.
The illustratively course of work of the ink feeding system by taking ink feeding system includes two sub- ink feeding systems 10 as an example below: such as
Shown in Fig. 2, inkjet-printing device in printing, sub- ink feeding system 10a and sub- ink feeding system 10b one by one to printing head ink supply,
For example sub- ink feeding system 10a is first opened to printing head ink supply, that is, the unlatching of ink-suuplying pump 4 of sub- ink feeding system 10a, control valve 5
It opens, second ink storage chamber of the ink material in the first ink storage chamber 11 of main ink-feeding device 1 through ink-suuplying pump 4, the first ink-feeding device 2
21, control valve 5 enters in printing head；After the ink material of main ink-feeding device 1 is finished in group ink feeding system 10a, sub- confession
Ink system 10a stops to printing head ink supply, that is, the ink-suuplying pump 4 of sub- ink feeding system 10a is closed, control valve 5 is closed；So
Afterwards, sub- ink feeding system 10b starts to printing head ink supply, that is, the ink-suuplying pump 4 of sub- ink feeding system 10b is opened, control valve 5 is opened
It opens, meanwhile, the main ink-feeding device 1 that ink material is finished in sub- ink feeding system 10a is replaced with to the main ink supply for filling ink material
Device 1, after replacement is completed, the ink-suuplying pump 4 of sub- ink feeding system 10a is opened, and control valve 5 still closes, ink material is taken out
Into the second ink storage chamber 21 until liquid level reaches preset value, then the ink-suuplying pump 4 of sub- ink feeding system 10a is closed, and ink material exists
It is stood in the second ink storage chamber 21 of sub- ink feeding system 10a, in this way because bubble caused by more change owner ink-feeding device 1 can be quiet
It sets middle rupture to eliminate, until sub- ink feeding system 10a is started again to printing head ink supply, then sub- ink feeding system 10b is also taken
With the above-mentioned identical step of sub- ink feeding system 10a, circulation is gone down always, until inkjet-printing device printing terminates.
Ink feeding system provided in an embodiment of the present invention, since it includes multiple sub- ink feeding systems 10, sub- ink supply multiple in this way
System 10 can be successively to printing head ink supply, and when a sub- ink feeding system 10 is to when printing head ink supply, other sons are supplied
Ink system 10, which can start ink-suuplying pump 4 and be evacuated to ink material in the second ink storage chamber 21 from the first ink storage chamber 11, to be stood, in this way
Bubble caused by more change owner ink-feeding device 1 can rupture elimination in standing, then other sub- ink feeding systems 10 again
When starting ink supply, the ink in the second ink storage chamber 21 after standing can be entered for printing in printing head, thus
The non-uniform phenomenon of printing thicknesses of layers caused by being entered to avoid bubble in printing head, and then be conducive to improve and be somebody's turn to do
The print quality of inkjet-printing device；
Simultaneously as it is in other sub- ink feeding systems that ink, which enters standing in the second ink storage chamber 21, in sub- ink feeding system 10
10 normally to what is carried out during printing head ink supply, and in this way between sub- ink feeding system 10 when switch operating, ink is entered
The time for being just not take up normal work is stood in second ink storage chamber 21, thus guarantee the duration of inkjet-printing device printing, into
And be conducive to improve the working efficiency of inkjet-printing device；
In addition, the ink feeding system is to eliminate ink in such a way that ink is stood during a sub- ink feeding system 10 works
Bubble in water, in this way between sub- ink feeding system 10 when switch operating, just without by that will be discharged with bladdery ink
Mode bubble is eliminated, thus be conducive to save printing needed for ink, and then reduce marking ink cost.
It should be understood that (1), in order to guarantee in every sub- ink feeding system 10, second positioned at the first ink-feeding device 2 stores up
Ink in black chamber 21 can smoothly enter into printing head, and the position of the ink outlet port of the second ink storage chamber 21 can be higher than printing
Spray head can enter printing head from the ink that the ink outlet port of the second ink storage chamber 21 comes out so under gravity
In；(2) in the ink feeding system of inkjet-printing device when just starting to work, first sub- ink supply system to printing head ink supply
Eliminating for bubble can be solved being discharged with bubble ink or by way of standing a period of time in system 10.
During sub- 10 ink supply of ink feeding system, since ink-suuplying pump 4 needs the second ink storage chamber to the first ink-feeding device 2
Gas in first feeding path 3, also can also be sent in the second ink storage chamber 21 by 21 conveying inks during conveying ink,
Such that the pressure in the second ink storage chamber 21 can increase, in order to balance the second ink storage chamber 21 and extraneous pressure, such as
Shown in Fig. 2, the first ink-feeding device 2 further includes first pressure regulating device 22, and first pressure regulating device 22 is for adjusting second
Pressure in ink storage chamber 21.By the way that first pressure regulating device 22 is arranged, in this way, being conveyed in ink-suuplying pump 4 to the second ink storage chamber 21
The pressure in the second ink storage chamber 21 can be adjusted during ink, so that the second ink storage chamber 21 and extraneous air pressure balance,
To guarantee ink smooth delivery of power into printing head.
Wherein, the structure of first pressure regulating device 22 is not unique, for example, as shown in Fig. 2, first pressure regulating device
22 may include vacuum system 221 (such as vacuum pump etc.) and connecting line 222, first end and the vacuum system of connecting line 222
System 221 is connected, and second end is connected with the second ink storage chamber 21, so as to be formed between the second ink storage chamber 21 and vacuum system 221
Access.When the pressure in the second ink storage chamber 21 is larger, vacuum system 221 is opened, and the gas in the second ink storage chamber 21 is extracted out
A part, to make the second ink storage chamber 21 and extraneous air pressure balance.In addition, first pressure regulating device 22 also may include pressure
Dynamic balance valve, equilibrated valve are set on the first ink-feeding device 2, when the pressure in the second ink storage chamber 21 reaches preset pressure value
When, balanced valve is opened, and communicates with the outside world the second ink storage chamber 21, to make the second ink storage chamber 21 and extraneous air pressure balance.Phase
Than the embodiment that first pressure regulating device 22 includes equilibrated valve, first pressure regulating device 22 includes vacuum system 221
With the embodiment of connecting line 222, vacuum system 221 can be bigger to the pressure controlled range in the second ink storage chamber 21, can
So as to keep the state of tiny structure in the second ink storage chamber 21, ink is evacuated to the second ink storage chamber to be more conducive to ink-suuplying pump 4
In 21.
It include connecting line in vacuum system 221 and the embodiment of connecting line 222 in first pressure regulating device 22
The position that 222 second end is connect with the second ink storage chamber 21 is not also unique, for example, as shown in Fig. 2, the second of connecting line 222
End can be connected with the top of the second ink storage chamber 21.In addition, the second end of connecting line 222 can also be with the second ink storage chamber 21
It is connected in the middle part of its short transverse.Compared to the second end of connecting line 222 and the second ink storage chamber 21 along its short transverse
The embodiment that middle part is connected, the embodiment that the second end of connecting line 222 is connected with the top of the second ink storage chamber 21, is supplying
During pump 4 conveys ink to the second ink storage chamber 21, the liquid level of ink be difficult to flood the second end of connecting line 222 with
The gas vent of junction in second ink storage chamber 21, the volume that such second ink storage chamber 21 contains ink would not be by second end and the
The limitation of link position in two ink storage chambers 21, to be conducive to improve the ink holding capacity of the second ink storage chamber 21.
In sub- ink feeding system 10 to during printing head ink supply, for the ease of ink in the second ink storage chamber 21 of control
Volume, as shown in Fig. 2, the first ink-feeding device 2 further includes the first liquid level sensor 23, the first liquid level sensor 23 is for measuring the
Liquid level in two ink storage chambers 21.It, can be by ink supply when the liquid level in the second ink storage chamber 21 is greater than preset upper limit value
Pump 4 is closed, to stop conveying ink into the second ink storage chamber 21；When the liquid level in the second ink storage chamber 21 is lower than pre-determined lower limit
When value, ink-suuplying pump 4 can be opened, to convey ink into the second ink storage chamber 21.Just by the first liquid level sensor 23 of setting
The liquid level that can control in the second ink storage chamber 21 fluctuates within a preset range, prevents the quantity of ink mistake in the second ink storage chamber 21
It is more or very few.
Wherein, as shown in Fig. 2, the first liquid level sensor 23 may include multiple (such as 3) first sub- liquid level sensor
231, multiple first sub- liquid level sensors 231 are all set in the second ink storage chamber 21, and are located at different height, in this way when the
When liquid level in two ink storage chambers 21 is reached at the sub- liquid level sensor 231 of different location first, the first sub- liquid level sensor at this
231 can generate electric signal, accurately to obtain the liquid level in the second ink storage chamber 21.
In ink feeding system provided in an embodiment of the present invention, the first ink-feeding device 2 may include first pressure regulating device 22,
It does not include the first liquid level sensor 23；Also it may include the first liquid level sensor 23, do not include first pressure regulating device 22；This
It can also not only include outside first pressure regulating device 22, but also including the first liquid level sensor 23, it above can be according to the actual situation
Setting, is not specifically limited herein.
In ink feeding system provided in an embodiment of the present invention, the second end of the first feeding path 3 of every sub- ink feeding system 10
Can directly it be connected with printing head；In addition, the second end of the first feeding path 3 of every sub- ink feeding system 10 can indirectly with
Printing head is connected, specific as shown in Fig. 2, the ink feeding system can also include the second ink-feeding device 6 and the second feeding path 7,
The first end of second feeding path 7 is connected with the second end of multiple first feeding paths 3, and the second of the second feeding path 7
End with printing head for being connected；Second ink-feeding device 6 includes third ink storage chamber 61, and third ink storage chamber 61 is located at the second ink supply
On access 7, and the position of the ink entrance of third ink storage chamber 61 is lower than the position of the ink outlet port of the second ink storage chamber 21, third ink storage
The ink entrance of chamber 61 is connected by the second feeding path 7, the first feeding path 3 with the ink outlet port of the second ink storage chamber 21.Wherein,
The position of the ink entrance of third ink storage chamber 61 is to guarantee the second ink storage chamber lower than the position of the ink outlet port of the second ink storage chamber 21
Ink in 21 can smoothly enter under gravity in third ink storage chamber 61 after ink-suuplying pump 4 stops working.Phase
Than the embodiment that the second end of the first feeding path 3 of every sub- ink feeding system 10 is directly connected with printing head, every height is supplied
The embodiment that the second end of first feeding path 3 of ink system 10 is connected with printing head indirectly, due in the first feeding path 3
Second end and printing head between be provided with the second ink-feeding device 6, the third ink storage chamber 61 of such second ink-feeding device 6 can be with
Play the role of intermediate buffering, reduces ink impact to printing head out from the second ink storage chamber 21 that ink-suuplying pump 4 conveys, from
And guarantee the normal ink-jet of printing head.
During sub- 10 ink supply of ink feeding system, ink enters third ink storage chamber 61 or ink from third ink storage chamber 61
Meeting during discharge is so that the pressure in third ink storage chamber 61 generates variation, in order to balance third ink storage chamber 61 and the external world
Pressure, as shown in Fig. 2, the second ink-feeding device 6 further includes second pressure regulating device 62, second pressure regulating device 62 is used for
Adjust the pressure in third ink storage chamber 61.By the way that second pressure regulating device 62 is arranged, in this way, to 61 delivered ink of third ink storage chamber
The pressure in third ink storage chamber 61 can be adjusted during water, so that third ink storage chamber 61 and extraneous air pressure balance, from
And guarantee ink smooth delivery of power into printing head.
Wherein, the structure of second pressure regulating device 62 is not unique, for example, as shown in Fig. 2, second pressure regulating device
62 may include air pump 621 and pipeline 622, and the first end of pipeline 622 is connected with air pump 621, second end and third ink storage chamber
61 are connected, so as to form access between third ink storage chamber 61 and air pump 621.When the pressure in third ink storage chamber 61 is larger,
Air pump 621 is opened, and extracts the gas in third ink storage chamber 61 out a part, to keep third ink storage chamber 61 and extraneous air pressure flat
Weighing apparatus；When the pressure in third ink storage chamber 61 is smaller, air pump 621 is opened, and a part of gas is inputted into third ink storage chamber 61, from
And make third ink storage chamber 61 and extraneous air pressure balance.In addition, second pressure regulating device 62 also may include equilibrated valve,
Equilibrated valve is set on the second ink-feeding device 6, when the pressure in third ink storage chamber 61 reaches preset pressure value, balanced valve
It opens, communicates with the outside world third ink storage chamber 61, to make third ink storage chamber 61 and extraneous air pressure balance.Compared to second pressure
Regulating device 62 includes the embodiment of equilibrated valve, and second pressure regulating device 62 includes the implementation of air pump 621 and pipeline 622
Example, air pump 621 can be bigger to the pressure controlled range in third ink storage chamber 61, can make to keep suitable in third ink storage chamber 61
When pressure, thus be more conducive to ink enter third ink storage chamber 61 or from third ink storage chamber 61 be discharged.
In sub- ink feeding system 10 to during printing head ink supply, for the ease of ink in control third ink storage chamber 61
Volume, as shown in Fig. 2, the second ink-feeding device 6 further includes the second liquid level sensor 63, the second liquid level sensor 63 is for measuring the
Liquid level in three ink storage chambers 61.When the liquid level in third ink storage chamber 61 is greater than preset upper limit value, can will control
Valve 5 is closed, to stop conveying ink into third ink storage chamber 61；When the liquid level in third ink storage chamber 61 is lower than pre-determined lower limit
When value, control valve 5 can be opened, to convey ink into third ink storage chamber 61.Just by the second liquid level sensor 63 of setting
The liquid level that can control in third ink storage chamber 61 fluctuates within a preset range, prevents the quantity of ink mistake in third ink storage chamber 61
It is more or very few, so as to accurately control the quantity of ink entered in printing head.
Wherein, as shown in Fig. 2, the second liquid level sensor 63 may include multiple (such as 4) second sub- liquid level sensor
631, multiple second sub- liquid level sensors 631 are all set in third ink storage chamber 61, and are located at different height, in this way when the
When liquid level in three ink storage chambers 61 is reached at the sub- liquid level sensor 631 of different location second, the second sub- liquid level sensor at this
631 can generate electric signal, accurately to obtain the liquid level in third ink storage chamber 61.
In ink feeding system provided in an embodiment of the present invention, the second ink-feeding device 6 may include second pressure regulating device 62,
It does not include the second liquid level sensor 63；Also it may include the second liquid level sensor 63, do not include second pressure regulating device 62；This
It can also not only include outside second pressure regulating device 62, but also including the second liquid level sensor 63, it above can be according to the actual situation
Setting, is not specifically limited herein.
During sub- 10 ink supply of ink feeding system, since ink-suuplying pump 4 will be in the first ink storage chamber 11 of main ink-feeding device 1
Ink extraction, can also extract the gas in the first ink storage chamber 11 out during extracting ink out, such that the first ink storage
Pressure reduction in chamber 11, in order to balance the first ink storage chamber 11 and extraneous pressure, as shown in Fig. 2, main ink-feeding device 1 is also
Including third pressure-regulating device 12, third pressure-regulating device 12 is used to adjust the pressure in the first ink storage chamber 11.In this way,
Ink-suuplying pump 4 can adjust the pressure in the first ink storage chamber 11 during the pumping ink water in the first ink storage chamber 11, so that first
Ink storage chamber 11 and extraneous air pressure balance, to guarantee that ink is successfully extracted out from the first ink storage chamber 11.
Wherein, the structure of third pressure-regulating device 12 is not unique, for example, as shown in Fig. 2, third pressure-regulating device
12 may include gas source 121 and snorkel 122, and the first end of snorkel 122 is connected with gas source 121, second end and the first storage
Black chamber 11 is connected.When the pressure in the first ink storage chamber 11 is smaller, gas source 121 is opened, and inputs one into the first ink storage chamber 11
Portion gas, to make the first ink storage chamber 11 and extraneous air pressure balance.In addition, third pressure-regulating device 12 also may include
Equilibrated valve, equilibrated valve are set on main ink-feeding device 1, when the pressure in the first ink storage chamber 11 is lower than preset pressure value
When, balanced valve is opened, and communicates with the outside world the first ink storage chamber 11, to make the first ink storage chamber 11 and extraneous air pressure balance.Phase
Than the embodiment of third pressure-regulating device 12 including equilibrated valve, third pressure-regulating device 12 include gas source 121 (such as
Air pump) and pipeline 622 embodiment, gas source 121 can be bigger to the pressure controlled range in the first ink storage chamber 11, can make
Pressure appropriate is kept in first ink storage chamber 11, is extracted out from the first ink storage chamber 11 to be more conducive to ink.
In ink feeding system provided in an embodiment of the present invention, main ink-feeding device 1 can be ink supply tank, or other ink supply
Container is not specifically limited herein；First ink-feeding device 2 can be ink supply tank, or other ink-feeding containers, this is not yet
It is specifically limited；Second ink-feeding device 6 can be ink supply tank, or other ink-feeding containers, also this be not specifically limited.
Second aspect, the embodiment of the invention provides a kind of inkjet-printing devices, as shown in Fig. 2, include printing head and
Ink feeding system described in first aspect, in every sub- ink feeding system 10, the second end and printing head of the first feeding path 3
It is connected, and the position of the ink outlet port of the second ink storage chamber 21 is higher than printing head；Wherein, the ink outlet port of the second ink storage chamber 21 is logical
The first feeding path 3 is crossed to be connected with printing head.
The technical effect of the technical issues of inkjet-printing device provided in an embodiment of the present invention is solved and generation, with
The technical effect of the technical issues of ink feeding system in one side is solved and generation is identical, and details are not described herein.
As shown in Fig. 2, in the case where ink feeding system further includes the second ink-feeding device 6 and the second feeding path 7, third storage
The position of the ink outlet port of black chamber 61 is higher than printing head；It is arranged in this way, the ink in third ink storage chamber 61 can be in weight
It is smoothly entered in printing head under the action of power, without consuming additional energy.
Wherein, the ink outlet port of third ink storage chamber 61 is connected by the second feeding path 7 with printing head.
The third aspect, the embodiment of the invention provides a kind of control method of ink feeding system as described in first aspect,
The following steps are included: multiple sub- ink feeding systems 10 are one by one to printing head ink supply；Such as shown in Fig. 2, sub- ink feeding system 10a and son
Ink feeding system 10b is one by one to printing head ink supply, and when sub- ink feeding system 10a stops ink supply, sub- ink feeding system 10b starts ink supply；
When sub- ink feeding system 10b stops ink supply, sub- ink feeding system 10a starts ink supply, is recycled down with this, until printing finishes.
When one of them sub- ink feeding system 10 is to when printing head ink supply, in other each sub- ink feeding systems 10, at least
The control valve 5 of one (can be one, be also possible to multiple) sub- ink feeding system 10 is closed, ink-suuplying pump 4 is opened, until the ink supply
Liquid level in second ink storage chamber 21 corresponding to pump 4 reaches preset value；Such as shown in Fig. 2, group ink feeding system 10a is sprayed to printing
When head ink supply, the control valve 5 of sub- ink feeding system 10b is closed, ink-suuplying pump 4 is opened, until the second ink storage chamber of sub- ink feeding system 10b
Liquid level in 21 reaches preset value, stands ink to eliminate bubble in the second ink storage chamber 21.
The technology of the technical issues of control method of ink feeding system provided in an embodiment of the present invention is solved and generation effect
Fruit, with the ink feeding system in first aspect the technical issues of solved and the technical effect of generation is identical, details are not described herein.
Phase in Installation practice appeared in the control method embodiment of the ink feeding system with above-mentioned ink feeding system
Same or similar feature, specifically can refer to the description in the Installation practice of above-mentioned ink feeding system, details are not described herein.
In the description of this specification, particular features, structures, materials, or characteristics can be real in any one or more
Applying can be combined in any suitable manner in example or example.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (11)
1. a kind of ink feeding system, which is characterized in that described for each sub- ink feeding system including multiple sub- ink feeding systems
Sub- ink feeding system includes main ink-feeding device, the first ink-feeding device, the first feeding path, ink-suuplying pump and control valve, the main ink supply
Device include the first ink storage chamber, first ink-feeding device include the second ink storage chamber, the first end of first feeding path with
First ink storage chamber is connected, and second end with the printing head of inkjet-printing device for being connected, along the direction of ink supply, institute
Ink-suuplying pump, second ink storage chamber, the control valve is stated to be set in turn on first feeding path.
2. ink feeding system according to claim 1, which is characterized in that first ink-feeding device further includes first pressure tune
At least one of regulating device, first liquid level sensor, the first pressure regulating device is for adjusting second ink storage chamber
In pressure, first liquid level sensor is used to measure liquid level in second ink storage chamber.
3. ink feeding system according to claim 2, which is characterized in that in first ink-feeding device include first pressure tune
In the case where regulating device, the first pressure regulating device includes vacuum system and connecting line, and the first of the connecting line
End be connected with the vacuum system, second end is connected with second ink storage chamber so that second ink storage chamber with it is described
Access is formed between vacuum system.
4. ink feeding system according to claim 3, which is characterized in that the second end of the vacuum line and second storage
It is connected at the top of black chamber.
5. ink feeding system according to any one of claims 1 to 4, which is characterized in that further include the second ink-feeding device and
Second feeding path, the first end of second feeding path are connected with the second end of multiple first feeding paths,
The second end of second feeding path with the printing head for being connected；Second ink-feeding device includes third ink storage
Chamber, the third ink storage chamber is located on second feeding path, and the position of the ink entrance of the third ink storage chamber is lower than
The position of the ink outlet port of second ink storage chamber；
Wherein, the ink entrance of the third ink storage chamber passes through second feeding path, first feeding path and described the
The ink outlet port of two ink storage chambers is connected.
6. ink feeding system according to claim 5, which is characterized in that second ink-feeding device further includes second pressure tune
At least one of regulating device, second liquid level sensor, the second pressure regulating device is for adjusting the third ink storage chamber
In pressure, second liquid level sensor is used to measure liquid level in the third ink storage chamber.
7. ink feeding system according to any one of claims 1 to 4, which is characterized in that the main ink-feeding device further includes
Third pressure-regulating device, the third pressure-regulating device are used to adjust the pressure in first ink storage chamber.
8. ink feeding system according to claim 7, which is characterized in that the third pressure regulating unit includes gas source and leads to
Tracheae, the first end of the snorkel are connected with the gas source, and second end is connected with first ink storage chamber.
9. a kind of inkjet-printing device, which is characterized in that including printing head and confession according to any one of claims 1 to 8
Ink system, in each sub- ink feeding system, the second end of first feeding path is connected with the printing head, and
And the position of the ink outlet port of second ink storage chamber is higher than the printing head；
Wherein, the ink outlet port of second ink storage chamber is connected by first feeding path with the printing head.
10. inkjet-printing device according to claim 9, which is characterized in that in the ink feeding system further include the second confession
In the case where black device and the second feeding path, the position of the ink outlet port of the third ink storage chamber is higher than the printing head；
Wherein, the ink outlet port of the third ink storage chamber is connected by second feeding path with the printing head.
11. a kind of control method of such as ink feeding system according to any one of claims 1 to 8, which is characterized in that including following
Step: multiple sub- ink feeding systems are one by one to printing head ink supply, when one of them described sub- ink feeding system is to the printing head
When ink supply, in other each sub- ink feeding systems, the control valve of at least one sub- ink feeding system is closed, ink-suuplying pump is opened
It opens, until the liquid level in the second ink storage chamber corresponding to the ink-suuplying pump reaches preset value.
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| CN113910777A (en) * | 2021-09-24 | 2022-01-11 | 新印科技股份有限公司 | Ink supply system of ink-jet printer |
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