CN106335278A - Printing ink jetting device and printing ink jetting method - Google Patents
Printing ink jetting device and printing ink jetting method Download PDFInfo
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- CN106335278A CN106335278A CN201610410603.8A CN201610410603A CN106335278A CN 106335278 A CN106335278 A CN 106335278A CN 201610410603 A CN201610410603 A CN 201610410603A CN 106335278 A CN106335278 A CN 106335278A
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- ink
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- gun
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Classifications
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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
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14088—Structure of heating means
-
- 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
-
- 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
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14153—Structures including a sensor
-
- 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
-
- 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
- B41J2/17596—Ink pumps, ink valves
-
- 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- Ink Jet (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a printing ink jetting device and a printing ink jetting method, wherein changing of a printing ink temperature can be restrained even if a flow rate of printing ink supplied to an ink spraying head changes. The printing ink is circulated in a first route; a second route is branched from a branch part of the first route and then returns to a confluence part of the first route; a first pump inserted into the first route is used to convey the printing ink; a heater is used to heat the printing ink circulated in the first route; the ink spraying head inserted into the second route converts the printing ink which passes the second route into drips and then jets the drops; and a second pump inserted into the second route is used to convey the printing ink.
Description
The application advocates the priority based on Japanese patent application filed in 7 days July in 2015 the 2015-135857th.
The full content of this Japanese publication is by reference to being applied in this specification.
Technical field
The present invention relates to a kind of ink-jet apparatus and ink jet method spraying heated ink from ink gun.
Background technology
Have disclosed in following patent documentations 1 after ink gun (nozzle head) is by ink (thin-film material of liquid) droplet treatment
The ink-jet apparatus being sprayed.In this ink-jet apparatus, supply ink from the tank storing ink to ink gun, and
Unnecessary ink is recovered to tank from ink gun.In order to reduce the viscosity of ink, in tank and in the transport path of ink, to oil
Ink is heated.
Patent documentation 1: International Publication No. 2013/015093
If the emitted dose of ink gun changes, in transport path, the flow of the ink of circulation also can change.
Thus, changed by the flow of the ink of heater, therefore the temperature of ink also can change.If being supplied to ink gun
The temperature of ink change, then the ink injection of ink gun becomes unstable.
Content of the invention
Even if it is an object of the invention to provide a kind of flow of the ink being supplied to ink gun changes and also can press down
Ink-jet apparatus and ink jet method that ink temperature processed changes.
According to a viewpoint of the present invention, provide a kind of ink-jet apparatus, it has:
1st path, ink circulates in described 1st path；
2nd path, after the branch part branch in described 1st path, returns to the interflow position in described 1st path；
1st pump, is inserted on described 1st path and conveys described ink；
Heater, heats to the described ink of circulation in described 1st path；
Ink gun, is inserted on described 2nd path, and carries out flowing through after the described droplet of ink in described 2nd path
Injection；And
2nd pump, is inserted on described 2nd path and conveys described ink.
According to another viewpoint of the present invention, provide a kind of ink jet method, it is to spray institute using ink-jet apparatus
The method stating ink, described ink-jet apparatus have:
1st path, ink circulates in described 1st path；
2nd path, after the branch part branch in described 1st path, returns to the interflow position in described 1st path；
Heater, heats to the described ink of circulation in described 1st path；And
Ink gun, is inserted on described 2nd path, and is sprayed after described droplet of ink,
In described ink jet method,
So that described ink is circulated in described 1st path, and with described heater, described ink is heated, make institute
The part stating the described ink in the 1st path flows to described 2nd path, thus described ink is supplied to described ink gun,
Spray from described ink gun after being fed into the described droplet of ink of described ink gun.
If the flow flowing through the ink in the 2nd path changes, the flow flowing through the ink in the 1st path also can become
Change.Now, the ratio of the total flow to the ink flowing through the 1st path for the variable quantity is less than variable quantity to the ink flowing through the 2nd path
Total flow ratio.Because heater heats to the ink flowing through the 1st path, therefore, it is possible to suppress ink temperature to send out
Change dynamic.
Brief description
Fig. 1 is the skeleton diagram of the ink-jet apparatus based on embodiment.
Fig. 2 is the skeleton diagram of the ink-jet apparatus based on another embodiment.
Fig. 3 be more specifically represent the ink-jet apparatus based on embodiment illustrated in fig. 2 the part in the 1st path general
Sketch map.
Fig. 4 is the skeleton diagram of the ink-jet apparatus based on another embodiment.
The flow chart that Fig. 5 is the use of the ink jet method of the ink-jet apparatus shown in Fig. 4.
In figure: 10- the 1st path, 11- heater, 12- the 1st pump, 13- the 1st temperature sensor, 14- recuperation valve, 15- compensates
Tank, 20- the 2nd path, 21- ink gun, 22- the 2nd pump, 23- heat shield, 24- the 2nd temperature sensor, 25- nozzle bore, 26,27-
Pressure transducer, 28- the 3rd pump, 29- surge tank, 31- branch part, 32- collaborates position, 34- surge tank, 40- object stage, 41-
Substrate, 50- control device, 60- supplying tank, 61- the 1st Room, 62- the 2nd Room, 63- the 3rd Room, 65- air valve, 66- level transducer.
Specific embodiment
Below, with reference to Fig. 1, the ink-jet apparatus based on embodiment are illustrated.
The skeleton diagram of the ink-jet apparatus based on embodiment shown in Fig. 1.Ink-jet apparatus tool based on embodiment
There is the 1st path 10 making ink circulate.In the branch part 31 in the 1st path 10, the 2nd path 20 is from the 1st path 10 branch.2nd
Path 20 is collaborated with the 1st path 10 at interflow position 32.
Heater 11 and the 1st pump 12 are inserted on the 1st path 10.Such as electric heater can be used as heater 11.
Such as membrane pump can be used as the 1st pump 12.Heater 11 and the 1st pump 12 are preferably inserted in from interflow position 32 to branch
On the path of position 31.1st pump 12 conveys the ink in the 1st path 10.Convey ink by using the 1st pump 12, make ink the 1st
Circulate in path 10.Heater 11 heats to the ink of circulation in the 1st path 10.
1st temperature sensor 13 measures the temperature of the ink of circulation in the 1st path 10.Measurement result is input to control dress
Put 50.
Ink gun 21 and the 2nd pump 22 are inserted with the 2nd path 20.Identical with the 1st pump 12, can also as the 2nd pump 22
Using such as membrane pump.2nd pump 22 conveys the ink in the 2nd path 20.If making the 2nd pump 22 work, follow in the 1st path 10
A part for the ink of ring flows into the 2nd path 20 in branch part 31.The ink being flowed into the 2nd path 20 is flowing through the 2nd path
Ink interflow after 20, in interflow position 32 and the 1st path 10.
Ink gun 21 will be sprayed after the droplet of ink that the 2nd path 20 flows into.Not injected ink is from ink-jet
21 outflows, and return to the 1st path 10 via the 2nd path 20.Substrate 41 is held in opposed with ink gun 21 by object stage 40
Position on.By making the drop land of the ink spraying from ink gun 21 in substrate 41, make Ink Application in substrate 41.
Then, the excellent effect of above-described embodiment is illustrated.Represented from branch part 31 to interflow with q1
The flow of the ink flowing through in the 1st path 10 at position 32, represents the flow of the ink flowing through in the 2nd path 20 with q2.
It is equal to q1+q2 in the flow of the ink flowing through from position 32 to the 1st path 10 of branch part 31 of interflow.From ink gun 21
In the case of injection ink, the flow of the ink in the 2nd path 20 of ink gun 21 upstream side and in ink gun 21 downstream
The 2nd path 20 in ink flow different.Here, illustrating to the state not spraying ink from ink gun 21.
The flow flowing through the ink of heater 11 is q1+q2.If the flow q2 flowing through the ink of ink gun 21 changes
And becoming q2+ δ q2, then the flow flowing through the ink of heater 11 also changes δ q2.Variable quantity is to the total stream flowing through heater 11
The ratio (rate of change) of amount is δ q2/ (q1+q2).
As comparative example, the structure being inserted with ink gun on 1 circulating path is illustrated.In this comparative example,
1 circulating path is inserted with ink gun and heater.If represent the flow of the ink flowing through ink gun with q2, flow through
The flow of the ink of heater is also equal with q2.If the flow flowing through the ink of ink gun changes δ q2, flow through heater
The flow of ink also changes δ q2.Now, the ratio (rate of change) of the total flow to the ink flowing through heater 11 for the variable quantity is
δq2/q2.
Rate of change δ q2/ (q1+q2) in embodiment is less than the rate of change δ q2/q2 in comparative example.Therefore, according to reality
Apply the structure of example, then, compared with the structure of comparative example, the rate of change flowing through the ink flux of heater reduces.Therefore, it is possible to subtract
The amplitude of fluctuation of ink temperature when the little ink flux flowing through ink gun 21 changes.Amplitude of fluctuation due to temperature subtracts
Little, therefore, it is possible to improve the stability of ink injection.
In order to reduce the rate of change of the ink flux flowing through heater 11, preferably flow q1 is set to specific discharge q2 big.Logical
Cross the action controlling the 1st pump 12 and the 2nd pump 22, it is possible to achieve this flow set.
Then, as another comparative example, to jumbo ink tank being inserted with 1 circulating path and in ink tank
The structure of interior configuration having heaters illustrates.In this comparative example, by by the ink temperature control in jumbo ink tank
It is made as constant, the amplitude of fluctuation of temperature when ink flux changes can be reduced.However, the temperature with ink raises,
The deterioration of ink can be accelerated.If ink deteriorates, ink must be changed.If substantial amounts of ink is stored with the state of heating,
Substantial amounts of ink must be discarded when changing ink.
In the above-described embodiments, due to substantial amounts of ink need not be stored with the state of heating, energy therefore when changing ink
Enough amounts reducing the ink needing to discard.
Then, to the ink-jet apparatus based on embodiment from start working and make ink begin to warm to ink injection
Order till action illustrates.
First, so that the 1st pump 12 and heater 11 is worked, so that ink circulates in the 1st path 10, and ink is entered
Row heating.Now, the 2nd pump 22 is in halted state.Therefore, ink may not flow into the 2nd path 20.If flowing through the 1st path 10
The temperature of ink reach the 1st target temperature, then so that the 2nd pump 22 is worked, so that ink is flowed into the 2nd path 20.Afterwards, make
Ink gun 21 works, thus carrying out the injection of ink.
In said sequence, the low-temperature printing ink before heating may not flow into the 2nd path 20.Due to low-temperature printing ink viscosity relatively
Height, therefore, if low-temperature printing ink is flowed into the 2nd path 20, the pressure loss can become big, and the flow of ink can reduce.Therefore, in stream
Spend the period in the 2nd path 20, the heat dissipation capacity of ink can increase.As a result, the ink temperature in ink gun 21 reaches target temperature
Till need longer time.In an embodiment, due to heating after ink be flowed in the 2nd path 20, therefore, it is possible to from
The flow of ink can be set to larger at the very start.Therefore, it is possible to shortening the ink in ink gun 21 and reaching target temperature it is
Time only.
Then, with reference to Fig. 2 and Fig. 3, the ink-jet apparatus of another embodiment are illustrated.Hereinafter, to shown in Fig. 1
The different point of embodiment illustrate, and to general incomplete structure explanation.
The skeleton diagram of the ink-jet apparatus based on another embodiment shown in Fig. 2.2nd temperature sensor 24 measures ink-jet
The temperature of the ink in 21.The measurement result of the 2nd temperature sensor 24 is input to control device 50.
The pressure of the ink in the 2nd path 20 of input side that pressure transducer 26 measurement is connected to ink gun 21.Pressure
The pressure of the ink in the 2nd path 20 of outlet side that sensor 27 measurement is connected to ink gun 21.Pressure transducer 26,27
Measurement result is input to control device 50.Control device 50 can calculate according to the measurement result of pressure transducer 26,27
The pressure of the ink in ink gun 21.
The ink being fed to the 1st path 10 is stored in compensating tank 15.1st path 10 is inserted with recuperation valve 14.Oil
Ink is fed to the 1st path 10 from compensating tank 15 via recuperation valve 14.Recuperation valve 14 can make ink be fed to from compensating tank 15
Switch between the supply state in the 1st path 10 and the non-supply state not feeding ink.Control device 50 controls heater
11st, the 1st pump 12 and recuperation valve 14.
Fig. 3 is the outline of the part in the 1st path 10 more specifically representing the ink-jet apparatus based on the present embodiment
Figure.1st path 10 is inserted with supplying tank 60.It is provided with the 1st Room 61, the 2nd Room 62 and the 3rd Room 63 in supplying tank 60.From the 1st
Flow through the ink coming in path 10 after being flowed in supplying tank 60, be flowed in the 1st Room 61 from the lower end of the 1st Room 61.1st
Configuration having heaters 11 in room 61.Ink is heated by heater 11 when flowing through upward in the 1st Room 61 from below.
If the liquid level being flowed into the ink of the 1st Room 61 rises and exceedes certain altitude, ink overflows from the 1st Room 61 and flows
Enter to the 2nd Room 62.It is connected with the end of the upstream side in the 2nd path 20 in the lower end of the 2nd Room 62.2nd Room 62 and the 2nd path 20
Connecting portion is equivalent to branch part 31 (Fig. 2).Ink in 2nd Room 62 flows into the 2nd path 20 and is supplied to ink gun 21.From
2nd path 20 to ink gun 21 for the end of upstream side is coated by heat shield 23.Face downward in ink gun 21
On be provided with multiple nozzle bores 25.Ink after each nozzle bore 25 sprays droplet treatment.
If the liquid level of the ink in the 2nd Room 62 exceedes certain altitude, ink overflows from the 2nd Room 62 and is flowed into Room the 3rd
63.The ink flowing out from the lower end of the 3rd Room 63 returns to supplying tank 60 by the 1st path 10.1st Room 61, the 2nd Room 62 and
Room 3 63 constitutes the part in the 1st path 10.
The end in the downstream in the 2nd path 20 is connected to the side of the 3rd Room 63.The ink coming is flow through from the 2nd path 20
It is flowed into the 3rd Room 63.The connecting portion of the 2nd path 20 and the 3rd Room 63 is equivalent to interflow position 32 (Fig. 2).
It is inserted with surge tank 34 on the 2nd path 20 between ink gun 21 and the 2nd pump 22.Surge tank 34 suppresses by the 2nd
The pulsation of the ink flux that pump 22 produces is delivered to ink gun 21.
Air valve 65 is installed above supplying tank 60.In the state of opening air valve 65, atmospheric pressure puts on Room the 1st
61st, the liquid level of the ink in the 2nd Room 62 and the 3rd Room 63.In the present embodiment, in the period of ink-jet apparatus work, air valve
65 are in opening.
1st pump 12 and the 2nd pump 22 be controlled so as to be flowed into by the 1st path 10 flow-rate ratio of the ink of supplying tank 60 from
The flow of the ink that the 2nd Room 62 is supplied to ink gun 21 is many.Therefore, ink overflows to the 3rd Room 63 from the 2nd Room 62 all the time.Thus,
The liquid level of the ink in the 2nd Room 62 remains constant.The liquid level of the 3rd Room 63 is lower than the liquid level of the 2nd Room 62
In the range of changed up and down according to the amount of ink.
Supplying tank 60 is provided with level transducer 66.Level transducer 66 measures the liquid level of the ink in the 3rd Room 63.
As level transducer 66, it is possible to use such as ultrasonic type level transducer, floating type level transducer etc..Level transducer
66 measurement result is input to control device 50 (Fig. 2).
Supplying tank 60 is additionally provided with the 1st temperature sensor 13.1st temperature sensor 13 measures the oil in the such as the 2nd Room 62
The temperature of ink.
It is applied with the height depending on the liquid level in nozzle bore 25 and the 2nd Room 62 in the position of the nozzle bore 25 of ink gun 21
The head pressure of difference.The head pressure of the position putting on nozzle bore 25 by adjusting this difference of height, can be adjusted.If flowing through
The total amount of the ink in 1 path 10 and the 2nd path 20 changes, then the liquid level of the ink in the 3rd Room 63 can change,
But the liquid level of the ink in the 2nd Room 62 still keeps constant.Therefore, even if flowing through the ink in the 1st path 10 and the 2nd path 20
Total amount increase or decrease it is also possible to the head pressure on the position of the nozzle bore 25 of ink gun 21 is maintained constant.
Then, with reference to Fig. 4 and Fig. 5, another embodiment is illustrated.Hereinafter, to the embodiment shown in Fig. 2 and Fig. 3
Different points illustrates, and to general incomplete structure explanation.
The skeleton diagram of the ink-jet apparatus based on another embodiment shown in Fig. 4.Embodiment shown in Fig. 2 and Fig. 3
In, it is inserted with the 2nd pump 22 on than ink gun 21 farther downstream the 2nd path 20 of side.In the embodiment shown in fig. 4, except
Beyond 2nd pump 22, the 2nd path 20 than ink gun 21 upstream side is inserted with the 3rd pump 28.And, the 3rd pump 28 with
It is inserted with surge tank 29 on the 2nd path 20 between ink gun 21.
By controlling the output of the 2nd pump 22 and the 3rd pump 28, can adjust curved on the position of nozzle bore 25 of ink gun 21
Levels pressure.
The flow chart employing the ink jet method of the ink-jet apparatus of Fig. 4 shown in Fig. 5.In step s1, control
Device 50 processed makes the 1st pump 12 work, so that ink circulates in the 1st path 10.In step s2, control device 50 judgement is
No require supplementation with ink.Here, can be in the 3rd Room 63 measured by the level transducer 66 being installed in supplying tank 60
The liquid level of ink come to determine a need for supplement ink.If liquid level is less than reference value set in advance, judge to need
Ink to be supplemented.If more than value on the basis of liquid level, judge not need makeup oil ink.
In the case of being judged to require supplementation with ink, in step s3, ink is supplemented to the 1st path 10.Specifically,
Recuperation valve 14 is switched to supply state by control device 50.Thus, ink is fed to the 1st path 10 from compensating tank 15.If Room the 3rd
The liquid level of the ink in 63 becomes more than reference value, then stop the supplement of ink.Specifically, control device 50 is by recuperation valve 14
Switch to non-supply state from supply state.
If being judged to not need makeup oil ink in step s2, or ink supplement finishing, then in step in step s3
In s4, the ink in the 1st path 10 is made to start to warm up.Specifically, control device 50 makes heater 11 work.
In step s5, judge whether the temperature of the ink in the 1st path 10 reaches the 1st target temperature.Control device 50
This judgement can be carried out according to the measurement result of the 1st temperature sensor 13.If the temperature of ink not yet reaches the 1st target temperature
Degree, then make ink continue to circulate till reaching the 1st target temperature in the 1st path 10.
If the temperature of the ink of circulation reaches the 1st target temperature in the 1st path 10, in step s6, ink is made to open
Begin to flow into the 2nd path 20.Specifically, control device 50 makes the 2nd pump 22 and the 3rd pump 28 work.Thus, start to ink gun 21
Supply ink.Now, the 2nd pump 22 and the 3rd pump 28 are controlled so as to be operated with output set in advance.
When starting to the 2nd path 20 supply ink, constitute the temperature ratio of pipeline and the ink gun 21 in the 2nd path 20 etc.
1st target temperature is low.Therefore, the temperature being flowed into the ink in the 2nd path 20 flows in the 2nd path 20 with ink and drops
Low.Now, the pipeline in the 2nd path 20 and ink gun 21 etc. are heated by ink.
In step s7, judge whether the temperature of the ink in ink gun 21 reaches the 2nd target temperature.Control device 50
Measurement result according to the 2nd temperature sensor 24 to carry out this judgement.2nd target temperature is set to and the 1st target temperature almost phase
With.If the temperature of the ink in ink gun 21 not yet reaches the 2nd target temperature, ink is made to continue to flow through in the 2nd path 20
Till the temperature of ink reaches the 2nd target temperature.
If the temperature of the ink in ink gun 21 reaches the 2nd target temperature, in step s8, start to make in ink gun 21
Ink pressure rise control.For example, control device 50 reduces the output of the 2nd pump 22 (Fig. 2, Fig. 3) such that it is able to make spray
The pressure of the ink in ink 21 rises.Now, the flow flowing through the ink in the 2nd path 20 can reduce.2nd pump 22 is controlled so as to
Its output is reduced to output set in advance.
In addition it is also possible to make the output of both the 2nd pump 22 and the 3rd pump 28 all reduce.Now, if by the 2nd pump 22
The reduction amount of output be set to bigger than the reduction amount of the output of the 3rd pump 28, then the pressure of the ink in ink gun 21 will be gone up
Rise.In the case of being somebody's turn to do, the flow flowing through the ink in the 2nd path 20 also can reduce.
In step s9, judge whether the pressure of the ink in ink gun 21 rises to goal pressure.Control device 50
Measurement result according to pressure transducer 26,27 (Fig. 2) to carry out this judgement.If the pressure of the ink in ink gun 21 not yet rises
To goal pressure, then control the output of the 2nd pump 22 and the 3rd pump 28 until reaching goal pressure.For example, control device 50 makes output
Increased or decreased with step-length set in advance.
If the pressure of the ink in ink gun 21 reaches goal pressure, in step s10, according to pressure transducer 26,
27 measurement result carries out feedback control to the output of the 2nd pump 22 and the 3rd pump 28, so that the pressure of the ink in ink gun 21 falls
In permissible range.Ink gun 21 is made to work while the output to the 2nd pump 22 and the 3rd pump 28 carries out feedback control.Thus,
Spray the drop of ink from ink gun 21.
Then, the excellent effect of the embodiment shown in Fig. 4 and Fig. 5 is illustrated.In the present embodiment, flow into the 2nd
The ink in path 20 is heated to the 1st target temperature (step s5).By heating, the viscosity of ink, therefore from the beginning
Just the flow flowing through the ink in the 2nd path 20 can be set to higher.Therefore, with Fig. 1 embodiment identical, spray can be shortened
The temperature of the ink in ink 21 reaches the time till the 2nd target temperature.
In addition, in the embodiment shown in Fig. 4 and Fig. 5, in the moment (step s6) beginning to flow to the 2nd path 20 from ink
Pressure to the ink making in ink gun 21 rises the period of (step s8), the pressure ratio final goal of the ink in ink gun 21
Pressure is low.Therefore, until ink gun 21 starts to spray the period till ink, it is prevented from ink and leaks from ink gun 21.
In the period from step s6 to step s8, as described above, the output of the 2nd pump 22 or the 2nd pump 22 and the 3rd pump 28 this two
The output of person is set to higher than the output of (step s11) during ink injection action.Therefore, from step s6 to step s8
The flow that period is flow through during the flow-rate ratio ink injection action of the ink in the 2nd path 20 is more.By the 2nd path 20 will be flow through
The flow of ink is set to more, and the temperature that can shorten the ink in ink gun 21 reaches the time till the 2nd target temperature.
And, in the embodiment shown in Fig. 4 and Fig. 5, the pressure of the ink in ink gun 21 reach goal pressure it
Afterwards, carry out feedback control so that the pressure in ink gun 21 falls in permissible range.If the pressure of the ink in ink gun 21
Start this feedback control, then feedback control can become unstable sometimes in the state of larger with the difference of goal pressure.In above-mentioned reality
Apply in example, it can be avoided that feedback control is unstable.
More than, described the present invention according to embodiment, but the present invention is not limited to this.For example, can carry out respectively
Plant change, improvement, combination etc., this is obvious to those skilled in the art.
Claims (9)
1. a kind of ink-jet apparatus are it is characterised in that have:
1st path, ink circulates in described 1st path；
2nd path, after the branch part branch in described 1st path, returns to the interflow position in described 1st path；
1st pump, is inserted on described 1st path and conveys described ink；
Heater, heats to the described ink of circulation in described 1st path；
Ink gun, is inserted on described 2nd path, and is sprayed flowing through after the described droplet of ink in described 2nd path；
And
2nd pump, is inserted on described 2nd path and conveys described ink.
2. ink-jet apparatus according to claim 1 are it is characterised in that also have:
Compensating tank, is fed to the described ink in described 1st path for storage；
Recuperation valve, is feeding the supply state of described ink and is not feeding described ink to described 1st path from described compensating tank
Non- supply state between switch over；
1st temperature sensor, the temperature of measurement described ink of circulation in described 1st path；And
Control device, controls described recuperation valve, described heater, described 1st pump and described 2nd pump,
Described control device is controlled as follows:
Described recuperation valve is set to described supply state and makes described 1st pump work, so that described ink is in described 1st path
Middle circulation, and control described heater that described ink is heated,
Described recuperation valve is switched to described non-supply state, afterwards, is sentenced according to the measurement result of described 1st temperature sensor
Whether the temperature being scheduled on the described ink of circulation in described 1st path reaches the 1st target temperature,
If it is determined that reaching described 1st target temperature for the temperature of described ink, then make described 2nd pump work, thus starting to institute
State the 2nd path and supply described ink.
3. ink-jet apparatus according to claim 2 it is characterised in that
Described control device is controlled as follows:
Control the action of described 1st pump and described 2nd pump, so that from described the of described branch part to described interflow position
The flow that the flow-rate ratio of the described ink flowing through in 1 path flows through the described ink in described 2nd path is big.
4. ink-jet apparatus according to claim 3 it is characterised in that
Described 2nd pump is inserted in than on described ink gun farther downstream described 2nd path of side,
Described ink-jet apparatus also have:
3rd pump, is inserted on described 2nd path than described ink gun upstream side；And
2nd temperature sensor, the temperature of the described ink in described 2nd path is flow through in measurement,
Described control device is controlled as follows:
Whether the temperature judging to flow through the described ink in described 2nd path according to the measurement result of described 2nd temperature sensor
Reach the 2nd target temperature,
If it is determined that the temperature of the described ink for flowing through described 2nd path reaches described 2nd target temperature, then control the described 2nd
Pump and described 3rd pump, so that the pressure of the described ink in described ink gun rises.
5. ink-jet apparatus according to claim 4 it is characterised in that
Described ink-jet apparatus also have pressure transducer, and this pressure transducer measures the described ink in described ink gun
Pressure,
Described control device is controlled as follows:
Controlling described 2nd pump so that after the pressure of described ink in described ink gun rises, according to described pressure sensing
Whether the measurement result of device rises to goal pressure come the pressure to judge the described ink in described ink gun,
If it is determined that reaching described goal pressure, then according to described pressure transducer for the pressure of the described ink in described ink gun
Measurement result, feedback control is carried out to described 2nd pump and described 3rd pump, so that the pressure of the described ink in described ink gun
Power falls in permissible range.
6. a kind of ink jet method, it is the method spraying described ink using ink-jet apparatus, described ink injection dress
Put and have:
1st path, ink circulates in described 1st path；
2nd path, after the branch part branch in described 1st path, returns to the interflow position in described 1st path；
Heater, heats to the described ink of circulation in described 1st path；And
Ink gun, is inserted on described 2nd path, and is sprayed after described droplet of ink,
Described ink jet method is characterised by,
So that described ink is circulated in described 1st path, and with described heater, described ink is heated, make described
A part for described ink in 1 path flows to described 2nd path, thus described ink is supplied to described ink gun,
Spray from described ink gun after being fed into the described droplet of ink of described ink gun.
7. ink jet method according to claim 6 it is characterised in that
Before supplying described ink to described ink gun,
So that described ink is not flow through in described 2nd path, but so that described ink is circulated in described 1st path, and use
Described heater heats to described ink,
If the temperature of the described ink of circulation reaches the 1st target temperature in described 1st path, make in described 1st path
A part for the described ink of circulation flows to described 2nd path.
8. ink jet method according to claim 7 it is characterised in that
After making a part for the described ink of circulation in described 1st path begin to flow to described 2nd path, if flowing through described
The temperature of the described ink in the 2nd path reaches the 2nd target temperature, then so that the pressure of the described ink in described ink gun is increased.
9. ink jet method according to claim 8 it is characterised in that
After the pressure of the described ink making in described ink gun rises, the flow controlling described 2nd path is so that described spray
The pressure of the described ink in black head falls in permissible range, and is sprayed after described ink gun is by described droplet of ink
Penetrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-135857 | 2015-07-07 | ||
| JP2015135857A JP6479596B2 (en) | 2015-07-07 | 2015-07-07 | Ink ejection apparatus and ink ejection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106335278A true CN106335278A (en) | 2017-01-18 |
| CN106335278B CN106335278B (en) | 2018-06-15 |
Family
ID=57827249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610410603.8A Active CN106335278B (en) | 2015-07-07 | 2016-06-12 | Ink-jet apparatus and ink jet method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6479596B2 (en) |
| KR (1) | KR101929094B1 (en) |
| CN (1) | CN106335278B (en) |
| TW (1) | TWI623438B (en) |
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| CN110225827A (en) * | 2017-04-21 | 2019-09-10 | 惠普发展公司，有限责任合伙企业 | The recycling of fluid in printer |
| CN112188934A (en) * | 2018-07-02 | 2021-01-05 | 得立鼎工业株式会社 | Paint supply system |
| CN114302772A (en) * | 2019-08-30 | 2022-04-08 | 京瓷株式会社 | Circulation device |
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| KR102030563B1 (en) * | 2017-04-21 | 2019-10-10 | (주)대명티에스 | Sealer application apparatus for vehicle body |
| JP6980339B2 (en) * | 2017-09-05 | 2021-12-15 | 住友重機械工業株式会社 | Liquid material discharge device and liquid material discharge method |
| JP6941365B2 (en) * | 2017-12-19 | 2021-09-29 | 武蔵エンジニアリング株式会社 | Droplet ejection device and droplet ejection method |
| US11697289B2 (en) * | 2020-12-01 | 2023-07-11 | Toshiba Tec Kabushiki Kaisha | Liquid circulation device and liquid discharge apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106335278B (en) | 2018-06-15 |
| TWI623438B (en) | 2018-05-11 |
| JP2017018845A (en) | 2017-01-26 |
| JP6479596B2 (en) | 2019-03-06 |
| KR101929094B1 (en) | 2018-12-13 |
| TW201702084A (en) | 2017-01-16 |
| KR20170006255A (en) | 2017-01-17 |
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