CN107538922A - Ink jetting pressure control device - Google Patents
Ink jetting pressure control device Download PDFInfo
- Publication number
- CN107538922A CN107538922A CN201610996105.6A CN201610996105A CN107538922A CN 107538922 A CN107538922 A CN 107538922A CN 201610996105 A CN201610996105 A CN 201610996105A CN 107538922 A CN107538922 A CN 107538922A
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- CN
- China
- Prior art keywords
- pressure
- sensor
- pressure control
- control valve
- connecting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- B41J2/17566—Ink level or ink residue control
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet
- B41J2/03—Ink jet characterised by the jet generation process generating a continuous ink jet by pressure
-
- 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
- B41J2/14032—Structure of the pressure chamber
-
- 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
Landscapes
- Ink Jet (AREA)
- Coating Apparatus (AREA)
Abstract
The present invention relates to a kind of digital internal pressure controlling device, it is used to minimize overshoot or undershoot (Over＆Under Shooting), solve the problems, such as to be occurred by the setting (Setting) for simulating (Analogue) mode, prevent the operating interruptions caused by the catastrophic failure of valve, the digital internal pressure controlling device is characterised by, including：First connecting portion, it is attached in the form of the negative pressure for supplying below 30KPa；Second connecting portion, it is attached in the form of highest 0.1MPa malleation or below 70kPa negative pressure are supplied according to control signal；Pipe arrangement block, it includes the multiple pipelines connected with the first connecting portion and second connecting portion, and forms the passage supplied to the pressure supplied in first and second connecting portion；First sensor, its negative pressure to the pressure feed pipe measure；Second sensor, its negative pressure and malleation to the pressure feed pipe measure；First and second interior pressure control valve, its basis perform ON/OFF so as to be controlled to ink gun internal pressure in the negative pressure measured by the first sensor；Pressure control valve in 3rd and the 4th, it performs ON/OFF so as to be controlled to ink gun internal pressure according in the negative pressure measured by the second sensor or malleation, is provided simultaneously with preventing mutual interlocking (Inter lock) function of opening.
Description
Technical field
The present invention relates to a kind of ink jetting pressure control device, relates more particularly to a kind of device, described device is used for will
Overshoot or undershoot (Over＆Under Shooting) minimize, and solve the setting by simulating (Analogue) mode
(Setting) the problem of occurring, the operating interruptions caused by the catastrophic failure of valve are prevented.
Background technology
According to registration patent 10-1065265 (providing ink and pressure regulation integrating device) number, content is disclosed directly below：" relate to
And a kind of providing ink and pressure regulation integrating device, it is characterised in that including：Chamber (chamber), it accommodates ink；It is main
Chamber, it carries out preparing storage to the ink for supplying to the chamber；Spray nozzle part, it is communicated in the chamber and will be from institute
The ink of chamber transfer is stated to outer jet；First valve, its flowing to the ink between main chamber room and the chamber
Cut off or connected；Second valve, its flowing to the ink between the chamber and the spray nozzle part are cut off or connected
Connect；Piston, it is configured at the upside for the ink for being contained in the chamber, causes that ink is closed in the chamber, and can carry out
Straight line back and forth movement；Piston drive division, it provides driving force to the piston；Sensor, it is arranged at the chamber, to by ink
Pressure caused by the loading of water measures；
Control unit, it receives the pressure that is measured from the sensor and to piston described in the piston drive division output control
Signal, the situation by the spray nozzle part to outside jet ink, with the water level decreasing for the ink for being contained in the chamber,
The piston declines, the situation that ink is filled to the chamber interior, and first valve is opened, and second valve is closed,
The piston rises.”
Look-ahead technique document Prior Art
【Patent document】
(patent document 0001) registration patent 10-1065265 (providing ink and pressure regulation integrating device)
The content of the invention
But there are the following problems for pressure control device for existing MPC (Meniscus pressure contriller).
1) according to the increased primary starting time delay phenomenon of storage tank capacity of chemicals feeder (Reservoir)
Reference picture 3 and Fig. 4, make use of existing 50mL, due at present in container (Reservoir) storage tank capacity expansion extremely
Existing head (head) internal pressure controlling device is used in the case of 2L, thus delay (Delay) problem for starting the time occurs.
When maximum (Max) pressure that can apply in view of the suction side valve (Valve) by head internal pressure controlling device is -10k Paasches
Block (Pa) it is horizontal when, -5k Pa etc. goal pressure is reached from barotropic state can occur time delay more than 10 seconds (sec).This
It is because must after for head (Head) maintenance (Maintenance) discharge (Purging) and suction (Suction) technique
It must be immediately converted as printing (Printing) technique, so ultimately resulting in the delays in work of equipment.
In order to solve described problem, although currently in order to shortening the primary starting time (Rising Time) and connecting in addition
Equipment (Utility) use as a kind of interim measure, but can not learn that slave unit (Utility) negative pressure is converted to basis
The correct condition of the control negative pressure of head pressure control device.
Therefore, take time after carrying out testing (Test) repeatedly, set device (Utility) the negative pressure open hour, if through
Certain time is spent, then by control right transfer to head pressure control device, control slave unit (Utility) is transferred to a pressure
The problem of existing during control device is occurred by excessive or less setting value (Overshooting＆
Undershooting the discharge wild effect of the ink caused by).
2) according to the opening of the valve of sensor senses and calibration (Calibration)
Reference picture 5, existing internal pressure control valve to two valves for being respectively present in positive pressure side and suction side in order to enter
Row controls and possesses PS1/PS2 and NS1 and NS2 sensor.Operated for the switch (On/Off) of accurate valve, according to
The gradient of the measured value of pressure should be identical possessed by NS1 and NS2, PS1 and PS2 sensor, needs to utilize current potential for this
The other calibration (Calibration) of device.But sensor as in all can not possess identical measured value, pass through school
Accurate amendment is also and incorrect.
Moreover, AD cards (not shown) that the reference signal for coming from computer is transfused to and positioned at the AD cards rear end and controlling
The problem of size of the Da cards (not shown) of threshold values is larger, therefore the space availability ratio that pressure control device be present reduces.
3) to the monitoring (Monitoring) of fault time of valve
As shown in Figure 10, as helical ring (Sprial Ring) internal rubber seal caused by frequently switching manipulation
(Sealing) partly by breakage so as to which the maloperation for spilling (Leakage), thus causing pressure of slight pressure occur, but simultaneously
In the absence of the breakage that can perceive the part in advance so that the method prevented problem.
Therefore, it is an object of the present invention to solve following technical task.
First, when solving to reach target (Target) pressure according to storage tank capacity untill startup time (Rising
Time while delay issue), setting manufal operation time (Time) is automatically switched to, so as to minimize control slave unit
(Utility) negative pressure from negative pressure to ink jetting pressure control device change when excessive or less setting value problem (Over＆
Under Shooting) generation.
Second, in order to solve by for ensuring pressure line is formed between existing sensor simulation (Analogue) mode
The problem that setting (Setting), sets the numerical limit (Digital according to a sensor (Sensor)
Limit), and to being set and being controlled according to the pressure of microprocessor (Micro Processor).
3rd, as shown in fig. 6, the scheme as the fault time for monitoring valve, calculates (Count) and is used for ON/OFF
The clock (Clock) of threshold values (Valve), so as to when the coefficient for reaching the life-span corresponding to normal spiral ring (Spirial Ring)
(Count) during 90% degree of value, set in the form of exporting the alarm for the part replacement of valve.
The present invention for realizing the purpose is related to a kind of ink jetting pressure control device, and it is to from inkjet printing nozzle
End is necessarily controlled to the head pressure of storage trough for ink (Reservoir) medicine ullage, prevents soaking for nozzle face in front
(Wetting) while, for maintaining inkjet nozzle front end meniscus (Meniscus) state of certain level all the time, and keep
The uniformity (Uniformity) and impact precision, the ink jetting pressure control device of ink discharge rate (Volume) include：
First connecting portion, it is attached in the form of below supply -30KPa negative pressure；Second connecting portion, it is with according to control signal
The form of supply highest 0.1MPa malleation or below -70kPa negative pressure is attached；Pipe arrangement block, it includes and described the
One connecting portion and multiple pipelines of second connecting portion connection, and form and the pressure supplied in first and second connecting portion is carried out
The passage of supply；First sensor, its negative pressure to the pressure feed pipe measure；Second sensor, it is to the pressure
The negative pressure and malleation of power supply pipe measure；First and second interior pressure control valve, its basis are surveyed in the first sensor
The negative pressure of amount performs ON/OFF so as to be controlled to ink gun internal pressure；Pressure control valve in 3rd and the 4th, it is according to described the
Negative pressure or malleation measured by two sensors perform ON/OFF so as to be controlled to ink gun internal pressure, are provided simultaneously with preventing from opening
Mutual interlocking (Interlock) function.
Based on the composition, have the effect that.
During negative-pressure operation at initial stage, in order that storage trough for ink (Reservoir) internal pressure of atmosphere pressure state reaches use
In the stress level (Level) of vacuum cavitations, pass through the pressure of below the second connecting portion application -70kPa, now, the 3rd
Interior pressure control valve is into closed mode, and according to first sensor, first and second interior pressure control valve performs on/off operation, when reaching valve
During the pressure of door switching point (Point), it is perceived in second sensor, and passes through control operation, the control of the 4th internal pressure
Valve is into closed mode, and pressure control valve all is matched somebody with somebody according to what the operation of pressure control valve in the 3rd was connected into open state in the 3rd
Plumber block body is operated by control pressure；
When malleation applies right overhead, in the 3rd after the shutoff operation of pressure control valve, malleation pressure control valve out of according to the 4th
The second connecting portion of opening be transferred to head, now, according to second sensor, if above setting malleation pressure feed extremely
Pipe arrangement block, then prevent from additionally supplying malleation while pressure control valve is closed in the 4th.
In embodiment, in addition to：Liquid level detecting sensor, its situation about being flowed back to decoction into the pipe arrangement block are entered
Row perceives；Pressure control valve in 5th, it is used for the medicine caused by the maloperation from storage trough for ink (Reservoir) level sensor
Pressure control valve in the described 3rd and the 4th is protected in liquid backflow；If perceive backflow, institute from the liquid level detecting sensor
State pressure control valve in the 5th and be automatically converted to standby open state.
In embodiment, including：Sensor board, it includes sensor portion, ADC, DAC；Digital control plate, it includes control
Plate, the control panel include memory, MCU, power supply unit, communication unit, and the control panel and the sensor board pass through cable modem
The connection of letter line and the power line that the oriented sensor board supply power supply is set.
In embodiment, including：Alarm, advance pair be arranged at it is common inside first and second described interior pressure control valve
The life-span corresponding standard value of helical ring (Sprial Ring) stored, and to first and second described interior pressure control valve
Switching manipulation be monitored, inform it is the failsafe valve time when more than the standard value.
In embodiment, the negative pressure supplied to the first connecting portion is below -30KPa, is supplied to the second connecting portion
The malleation given is up to 0.1MPa, or negative pressure is below -70kPa.
In embodiment, the first sensor S1 measures to interior pressure control valve V1, V2 negative pressure, second sensor
S2 is measured to the negative pressure and malleation of pressure feed pipe, monitored, and pressure control valve V3 bottom is provided with and is used in the 3rd
Policer operation confirms the abnormal 3rd sensor S3 of the presence or absence of first sensor S1, and can be cut by switching switch (not shown)
Change the function using first sensor S1 and 3rd sensor S3.
It is as follows according to advantage possessed by the preferable effect of the present invention.
First, change digital (Digital) is limited according to the setting of simulation potentiometer, so that more accurate pressure
Setting is possibly realized, therefore can accomplish the raising of control precision.
Second, existing analog form is contrasted, is set because the reduction of number of sensors can save for the zero point of pressure
Put and the time of band setting, and the reduction due to replacing quantity when sensor fault occurs can accomplish the section of maintenance cost
About.
3rd, from it is existing from PC in a manner of the analogue value obtains the standard value (Reference) about pressure it is different, will
The standard value (Reference) for coming from PC is stored in and is equipped with microprocessor (Micro Processor) plate, and in real time
Control valve, so as to accomplishing the increase of Valve controlling speed, and due in the prior art from PC to pressure control valve
Communication cable (Cable) length is more than 10m, while controls multiple pressure controllers, thus with can solve communication when send out
The advantages of omission problem of raw daily record data (Log Data) etc..
In addition, the 4th, due to the fault time of valve can be grasped in advance by monitoring function, therefore with can prevent by dashing forward
The advantages of the problems such as working time of process equipment caused by right failure shortens.
Brief description of the drawings
Fig. 1 is the block diagram for illustrating the ink jetting pressure control device according to the present invention.
Fig. 2 is the block diagram for showing to be formed according to the valve of the ink jetting pressure control device of the present invention.
The block diagram for the problem of Fig. 3 is for illustrating existing pressure control device.
The chart for the problem of Fig. 4 is for illustrating existing pressure control device.
The block diagram for the problem of Fig. 5 is for illustrating existing internal pressure control valve.
Fig. 6 is block diagram for the purpose of illustrating the invention.
Fig. 7 is the block diagram for illustrating the solution method of the present invention.
Fig. 8 is the chart for the operation for showing the internal pressure control valve according to the present invention.
Fig. 9 is the block diagram for the embodiment for showing the ink jetting pressure control device according to the present invention.
Figure 10 is comparison diagram of the helical ring internal rubber seal normally with damage.
Embodiment
Hereinafter, the present invention is described in detail referring to the drawings.
Fig. 1 is the block diagram for illustrating the ink jetting pressure control device according to the present invention, and Fig. 2 is to show to be used to illustrate this hair
The block diagram that the valve of the ink jetting pressure control device of bright solution method is formed, Fig. 7 are the solution methods for illustrating the present invention
Block diagram, Fig. 8 be show according to the present invention internal pressure control valve operation chart, Fig. 9 be show according to the present invention spray
The block diagram of the embodiment of black pressure control device.
A kind of device that the digital pressure control device of the invention of diagram is discussed further below：It from ink jet printing to spraying
The head pressure to storage trough for ink (Reservoir) medicine ullage is held necessarily to be controlled, prevented the leaching of nozzle face in face of mouth
While wet (Wetting), for maintaining inkjet nozzle front end meniscus (Meniscus) state of certain level all the time, and protect
Hold ink discharge rate (Volume) uniformity (Uniformity) and impact precision.
Therefore, the digital pressure control device of the invention shown in Fig. 1 includes：Decoction supply unit 11, it is carried out to decoction
Supply；Head internal pressure control unit 12, its correct internal pressure is controlled；Head 10, it is print head；Liquid level control unit 13, its
The highest order horizontal level of decoction is controlled；Storage trough for ink 14, it is stored and supplied to ink；Fluid temperature controls
Portion 15, its temperature to decoction are controlled；Valve controlling portion 16, it is controlled to valve；Waveform control unit 17, it is to pressure
Reeb shape is controlled.
As shown in Fig. 2 digital pressure control device includes：First connecting portion (Uti-1), it is with below supply -30KPa
The form of negative pressure is attached；Second connecting portion (Uti-2), its with supplied according to control signal highest 0.1MPa malleation or-
The form of below 70kPa negative pressure is attached.
Including：Pipe arrangement block, it includes the multiple pipelines connected with the first connecting portion and second connecting portion, and forms
The passage supplied to the pressure supplied in first and second connecting portion；First sensor S1, it is to the pressure feed
The negative pressure of pipe measures；Second sensor S2, its negative pressure and malleation to the pressure feed pipe measure.
Including:First and second interior pressure control valve V1, V2, it is performed according in the negative pressure measured by the first sensor
ON/OFF to ink gun internal pressure so as to be controlled；Pressure control valve V3, V4 in 3rd and the 4th, it is according in the described second sensing
Negative pressure or malleation measured by device perform ON/OFF so as to be controlled to ink gun internal pressure, are provided simultaneously with preventing the mutual of opening
(Interlock) function is interlocked, the action effect including the interior pressure control valve is observed referring to Fig. 2 and Fig. 7.
During negative-pressure operation at initial stage, in order that storage trough for ink (Reservoir) internal pressure of atmosphere pressure state reaches use
In the stress level (Level) of vacuum cavitations, pass through the pressure of below the second connecting portion application -70kPa.
Now, pressure control valve is into closed mode in the 3rd, and according to first sensor, first and second interior pressure control valve performs
On/off operation, when reaching the pressure of valve transfer point (Point), it is perceived in second sensor, and pass through control
Operation, pressure control valve is into closed mode in the 4th, and pressure control valve is into open state in the 3rd, according to the behaviour of pressure control valve in the 3rd
All pipe arrangement blocks for making to be connected are operated by control pressure；
When malleation applies right overhead, in the 3rd after the shutoff operation of pressure control valve, malleation pressure control valve out of according to the 4th
The second connecting portion of opening be transferred to head, now, according to second sensor, if above setting malleation pressure feed extremely
Pipe arrangement block, then prevent from additionally supplying malleation while pressure control valve is closed in the 4th.
Furthermore it is preferred that also include：Liquid level detecting sensor, its situation about being flowed back to decoction into the pipe arrangement block
Perceived；Pressure control valve in 5th, it is used for caused by the maloperation from storage trough for ink (Reservoir) level sensor
Pressure control valve in the described 3rd and the 4th is protected in decoction backflow.Now, if perceived back from the liquid level detecting sensor
Stream, then pressure control valve is automatically converted to standby open state in the described 5th.
The first sensor S1 is measured to interior pressure control valve V1, V2 negative pressure, and second sensor S2 is supplied pressure
Negative pressure and malleation to pipe are measured, monitored, and pressure control valve V3 bottom is provided with 3rd sensor S3 in the 3rd, institute
State 3rd sensor S3 and be used for the abnormal policer operation confirmations of the presence or absence of S1, and switch is changeable to be passed using first by switching
Sensor S1 and 3rd sensor S3 function.
Therefore, first sensor S1 is measured to pressure feed pipe V1, V2 negative pressure, controlled, S2 pairs of second sensor
The negative pressure and malleation of pressure feed pipe are measured, monitored, and pressure control valve V3 bottom is provided with the 3rd sensing in the 3rd
Device S3, the 3rd sensor S3 are used for the abnormal policer operations of the presence or absence of first sensor S1 and confirmed, and lead to as needed
Cross switching switch (not shown) changeable function using first sensor S1 and 3rd sensor S3.
It generally compare 3rd sensor S3, first sensor S1 performed as main sensors operate thus to first and
Pressure control valve is controlled in second, still, when first sensor S1 abnormal operations, then 3rd sensor S3 prior to S1 to pressure
Power is controlled.
Digitlization inscape in the present invention to pressure control device observe as follows.
As shown in Fig. 7 right side, pressure control device of the invention includes：Sensor board 41, it include sensor portion,
ADC、DAC；Digital control plate, it includes control panel, and the control panel includes memory, MCU, power supply unit, communication unit, the control
Making sheet is connected by wire communication line with the sensor board and sets the power line of the oriented sensor board supply power supply.
Furthermore it is preferred that in order to inform the failsafe valve time including alarm, advance pair with being arranged at described first and the
The life-span corresponding standard value of common helical ring (Sprial Ring) in two inside pressure control valve is stored, and to institute
The switching manipulation for stating first and second interior pressure control valve is monitored, and is informed when more than the standard value when being failsafe valve
Between.
Label declaration
10：Head
11：Decoction supply unit
12：Head internal pressure control unit
13：Liquid level control unit
14：Storage trough for ink
15：Fluid temperature control unit
16：Valve controlling portion
17：Waveform control unit
Claims (6)
1. a kind of ink jetting pressure control device, it in face of inkjet printing nozzle to holding the water to storage trough for ink medicine ullage
Head pressure is necessarily controlled, prevents while soaking of nozzle face, for maintaining the inkjet nozzle front end of certain level all the time
Meniscus states, and keep the uniformity of ink discharge rate and impact precision, the ink jetting pressure control device to include：
First connecting portion, it is attached in the form of supplying certain negative pressure；
Second connecting portion, it is attached in the form of supplying malleation or certain negative pressure according to control signal；
Pipe arrangement block, it includes the multiple pipelines connected with the first connecting portion and second connecting portion, and forms to first
And the passage that the pressure that is supplied of second connecting portion is supplied；
First sensor, its negative pressure to the pressure feed pipe measure；
Second sensor, its negative pressure and malleation to the pressure feed pipe measure；
First and second interior pressure control valve, it performs ON/OFF so as to spray according in the negative pressure measured by the first sensor
Black head internal pressure is controlled；
Pressure control valve in 3rd and the 4th, its according to the negative pressure measured by the second sensor or malleation perform ON/OFF from
And ink gun internal pressure is controlled, it is provided simultaneously with preventing the mutual interlock function of opening；
During negative-pressure operation at initial stage, in order that the storage trough for ink internal pressure of atmosphere pressure state reaches the pressure for vacuum cavitations
Level, by the pressure of below the second connecting portion application -70kPa, now, pressure control valve is into closed mode, root in the 3rd
According to first sensor, first and second interior pressure control valve performs on/off operation, when reaching the pressure of valve transfer point, second
Sensor perceives to it, and by control operation, and pressure control valve is into closed mode in the 4th, and pressure control valve is into opening in the 3rd
State is put, is operated according to all pipe arrangement blocks that the operation of pressure control valve in the 3rd is connected by control pressure；
When malleation applies right overhead, in the 3rd after the shutoff operation of pressure control valve, malleation pressure control valve out of according to the 4th is opened
The second connecting portion put is transferred to head, now, according to second sensor, if above setting malleation pressure feed to pipe arrangement
Block, then prevent from extraly supplying malleation while pressure control valve is closed in the 4th.
2. ink jetting pressure control device according to claim 1, it is characterised in that also include：
Liquid level detecting sensor, its situation about being flowed back to decoction into the pipe arrangement block perceive；
Pressure control valve in 5th, it is used to protect institute in the decoction backflow caused by the maloperation from storage trough for ink level sensor
State pressure control valve in the 3rd and the 4th；If perceive backflow, the 5th internal pressure control from the liquid level detecting sensor
Valve is automatically converted to standby open state.
3. digital pressure control device according to claim 1, it includes：
Sensor board, it includes sensor portion, ADC, DAC；Digital control plate, it includes control panel, and the control panel includes depositing
Reservoir, MCU, power supply unit, communication unit, the control panel are connected by wire communication line with the sensor board and set oriented institute
State the power line of sensor board supply power supply.
4. digital pressure control device according to claim 1, it includes：
Alarm, the life-span of the advance pair of common helical ring with being arranged inside first and second described interior pressure control valve are corresponding
Standard value is stored, and the switching manipulation to first and second interior pressure control valve is monitored, when more than the standard
Inform it is the failsafe valve time during value.
5. ink jetting pressure control device according to claim 1, it is characterised in that
The negative pressure supplied to the first connecting portion is below -30KPa, and the malleation supplied to the second connecting portion is up to
0.1MPa, or negative pressure are below -70kPa.
6. ink jetting pressure control device according to claim 1, it is characterised in that
Described first sensor internal pressure control valve V1, V2 negative pressure are measured, and second sensor is born to pressure feed pipe
Pressure and malleation are measured, monitored, and pressure control valve V3 bottom is provided with 3rd sensor (S3) in the 3rd, and the described 3rd
Sensor (S3) is used for the abnormal policer operation of the presence or absence of first sensor and confirmed, and switch is changeable to use the by switching
The function of one sensor and 3rd sensor (S3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160080425A KR101694278B1 (en) | 2016-06-27 | 2016-06-27 | Ink-jet pressure controller for Meniscus pressure |
| KR10-2016-0080425 | 2016-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107538922A true CN107538922A (en) | 2018-01-05 |
| CN107538922B CN107538922B (en) | 2019-03-12 |
Family
ID=57810779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610996105.6A Active CN107538922B (en) | 2016-06-27 | 2016-10-28 | Ink jetting pressure control device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101694278B1 (en) |
| CN (1) | CN107538922B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409364A (en) * | 2019-01-08 | 2020-07-14 | 高山技术株式会社 | Pressure regulating device of ink-jet printer and regulating method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6935718B2 (en) * | 2017-10-11 | 2021-09-15 | セイコーエプソン株式会社 | Liquid discharge device, its manufacturing method and maintenance method |
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| KR101694278B1 (en) | 2017-01-09 |
| CN107538922B (en) | 2019-03-12 |
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