CN104914597A - Apparatus for protecting dispenser condensation and method for operating the same - Google Patents
Apparatus for protecting dispenser condensation and method for operating the same Download PDFInfo
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- CN104914597A CN104914597A CN201510106594.9A CN201510106594A CN104914597A CN 104914597 A CN104914597 A CN 104914597A CN 201510106594 A CN201510106594 A CN 201510106594A CN 104914597 A CN104914597 A CN 104914597A
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- pressure
- valve
- negative pressure
- supply pipe
- discharge
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- 238000009833 condensation Methods 0.000 title claims abstract description 69
- 230000005494 condensation Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 126
- 230000002265 prevention Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 abstract description 43
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 235000015110 jellies Nutrition 0.000 description 16
- 239000008274 jelly Substances 0.000 description 16
- 238000007599 discharging Methods 0.000 description 10
- 239000011261 inert gas Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000004020 luminiscence type Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
- B05C11/101—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to weight of a container for liquid or other fluent material; responsive to level of liquid or other fluent material in a container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
- B05C11/1013—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to flow or pressure of liquid or other fluent material
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Coating Apparatus (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to an apparatus for protecting dispenser condensation and a method for operating the same, and more specifically, an apparatus for protecting liquid condensation at nozzle tips when coating liquid such as liquid crystal and mash to a substrate, and a method for operating the same. According to the embodiment of the invention, the method includes: providing discharge supply pressure in a positive pressure mode to a pressure supply pipe connected to a syringe so as to discharge the liquid through the nozzle of the syringe; providing discharge resistant pressure in a first negative mode to the pressure supply pipe to block liquid discharge when liquid discharge stops; and avoiding liquid condensation in the nozzle through blocking liquid discharge, and providing the liquid condensation resistance pressure of second negative pressure less than the discharge resistant pressure to the pressure supply pipe.
Description
Technical field
The present invention relates to a kind of for preventing the equipment of the liquid condensation in divider and a kind of for preventing the method for the liquid condensation in divider, and more particularly, relate to a kind of for preventing equipment and the method for operating of the liquid condensation at the tip place at nozzle when the liquid of such as liquid crystal or pastel is coated to substrate.
Background technology
Liquid crystal display (liquid crystal display; LCD) be manufacture by the following method: for forming multiple pattern of pixels on single substrate, another substrate corresponding thereto forms color filter layers, in conjunction with two glass substrate, and then by preordering method by Liquid crystal pour in space, described space is formed by two substrates combined and internal sealant.
Operation for pastel being discharged into glass substrate by predetermined pattern during the manufacture of foregoing liquid crystal display is undertaken by the equipment being used for discharging pastel.
Exhaust apparatus for pastel being discharged into flat substrate comprises: a platform, and upper substrate and lower substrate are located thereon; Divider, it comprises the syringe being filled with starting material (pastel) and nozzle pastel being disposed to the substrate on platform; Sensor, it measures the gap between substrate and nozzle; Driver, it raises divider; Transfer part, it flatly moves divider; And controller, the operation of its control dispenser.
In order to use exhaust apparatus to form pattern in the substrate, first, the gap between sensor measurement substrate and nozzle is used.In addition, by vertically moving up and down the gap that divider controls between substrate and nozzle.Next, by forming desired jelly pattern from moving divider during nozzle discharge raw material.
Such as, when jelly pattern is formed at the edge for the substrate of single panel, jelly pattern 20 has shape as illustrated in Figure 1.As illustrated in Figure 1, jelly pattern 20 has the shape at the center sealing substrate 10 from the edge of substrate 10.Herein, jelly pattern 20 is formed by the straight part 23 at the edge but not each corner that are positioned at substrate 10, and described straight part has uniform width and height.In addition, jelly pattern 20 is formed by the sweep 22 of each corner being positioned at substrate 10, runs through jelly pattern 20, and described sweep has uniform width and height.
Therefore, pastel discharges from the starting point 21 as initial point, and then arrives the end point 24 before immediately preceding starting point 21, around straight part 23 and sweep 22 to form jelly pattern 20.
But, after discharge jelly pattern, need the stand-by period for the formation of ensuing jelly pattern.Now, liquid condensation (drop) occurs in the tip of nozzle.Liquid condensation is coalescent because of the pressure of the scallop-height generation of the starting material reason syringe at the lower end place of nozzle.Therefore, after liquid condensation phenomenon occurs in past stand-by period, and raw-material viscosity is not considered.
Owing to liquid condensation phenomenon, unexpectedly discharge large content of starting materials in the starting point of next jelly pattern, possibility is uneven on the whole to make the height of pattern.
In order to prevent liquid condensation, using and being used for residual pressure being maintained the method for fixed value or being used for allowing other surface of the nib contacts substrate of nozzle to prevent liquid from the method for nozzle discharge.But have following problem for method residual pressure being maintained fixed value: the amount depending on the liquid of use, liquid condensation may still there will be, and on the contrary, liquid can be inhaled in nozzle.Method for the surface allowing the nib contacts substrate of nozzle has following problem: the surrounding of nozzle may may damage contaminated and nozzle.
[relevant technical literature]
[patent documentation]
No. 10-2013-0007134th, (patent documentation 1) Korea Patent Laid publication
Summary of the invention
This disclosure provides a kind of for preventing equipment and the method for the liquid condensation in the nozzle of the syringe for divider.In addition, this disclosure prevents liquid after having discharged liquid to be inhaled in the nozzle for the syringe of divider.This disclosure provides a kind of contaminated equipment of surrounding and method of the nozzle for preventing syringe.
According to one exemplary embodiment of the present invention, a kind of for preventing the method for the liquid condensation in divider from comprising: by by malleation form discharge supply pressure being provided to the pressure supply pipe that is connected to syringe by the nozzle discharge liquid of syringe; By stoping pressure to be provided to the discharge that pressure supply pipe stops liquid discharge when hope stops discharge liquid by the first negative pressure form; And by stoping the discharge of liquid and then by for being less than the liquid condensation that discharge stops the liquid condensation of the second negative pressure of pressure protection pressure to be provided to pressure supply pipe to prevent in nozzle.
The discharge of liquid can comprise malleation is provided to pressure supply pipe as discharge supply pressure, it is provided to the second negative pressure valve of pressure supply pipe by turning off atmospheric pressure valve atmospheric pressure being provided to pressure supply pipe, the first negative pressure valve the first negative pressure being provided to pressure supply pipe and the second negative pressure by the pressure for being less than the first negative pressure, and opens the malleation valve presetting malleation being provided to pressure supply pipe.
The prevention of the discharge of liquid can comprise by turning off malleation valve, the second negative pressure valve, atmospheric pressure valve and only open the first negative pressure valve and the first negative pressure is provided to pressure supply pipe stops pressure as discharge.
The prevention of the discharge of liquid can comprise and the first negative pressure is provided to pressure supply pipe stops pressure as discharge, it by being transformed into atmosphere pressure state by turning off malleation valve, the first negative pressure valve and the second negative pressure valve and only opening atmospheric pressure valve goalkeeper pressure supply pipe, and then only opens the first negative pressure valve.
The preventing of liquid condensation in nozzle can comprise and the second negative pressure is provided to pressure supply pipe prevents pressure by turning off malleation valve, atmospheric pressure valve and the first negative pressure valve and only opening the second negative pressure valve as liquid condensation.
The preventing of liquid condensation in nozzle can comprise and the differential pressure between malleation and the first negative pressure is provided to pressure supply pipe prevents pressure by turning off atmospheric pressure valve and the second negative pressure valve and only opening malleation valve and the first negative pressure valve as liquid condensation.
Second negative pressure can be less than the first negative pressure.First negative pressure can scope from-20Kpa to-10Kpa, and the second negative pressure can scope from-3Kpa to-1Kpa.
According to another exemplary embodiment of the present invention, a kind of for preventing the equipment of the liquid condensation in divider from comprising: malleation valve, it is configured to presetting malleation to be provided to pressure supply pipe; Atmospheric pressure valve, it is configured to atmospheric pressure to be provided to pressure supply pipe; First negative pressure valve, it is configured to the first negative pressure to be provided to pressure supply pipe; Second negative pressure valve, it is configured to the second negative pressure being less than the first negative pressure to be provided to pressure supply pipe; Pressure supply pipe, it is configured to allow malleation valve, atmospheric pressure valve, the first negative pressure valve and the second negative pressure valve be communicated with as a supply pipe with syringe; And open and close controller, it is configured to when stoping liquid to discharge from syringe, turn off malleation valve, the second negative pressure valve and atmospheric pressure valve and only open the first negative pressure valve to stop pressure to be provided to pressure supply pipe discharge by the first negative pressure form, and then turning off malleation valve, atmospheric pressure valve and the first negative pressure valve and open the second negative pressure valve and prevent pressure so that the second negative pressure is provided to pressure supply pipe as liquid condensation.
According to an one exemplary embodiment more of the present invention, a kind of equipment of the liquid condensation for preventing divider comprises: malleation valve, and it is configured to presetting malleation to be provided to pressure supply pipe; Atmospheric pressure valve, it is configured to atmospheric pressure to be provided to pressure supply pipe; First negative pressure valve, it is configured to the first negative pressure to be provided to pressure supply pipe; Second negative pressure valve, it is configured to the second negative pressure being less than the first negative pressure to be provided to pressure supply pipe; Pressure supply pipe, it is configured to allow malleation valve, atmospheric pressure valve, the first negative pressure valve and the second negative pressure valve be communicated with as a supply pipe with syringe; And opening and closing controller, it is configured to when stoping liquid to discharge from syringe, turn off malleation valve, the second negative pressure valve and atmospheric pressure valve and only open the first negative pressure valve to stop pressure to be provided to pressure supply pipe discharge by the first negative pressure form, and then turn off atmospheric pressure valve and the second negative pressure valve and open malleation valve and the first negative pressure valve prevents pressure so that the differential pressure between malleation and the first negative pressure is provided to pressure supply pipe as liquid condensation.
Described equipment can comprise further: pressure-sensing sensor, and it is configured to the pressure checking pressure supply pipe; And residual volume detection sensor, it is configured to the residual volume of the liquid sensing syringe.
Open and close controller can be used in the pressure-sensing sensor inspection pressure supply pipe in atmosphere pressure state after discharge pressure at liquid, and discharge is stoped pressure and liquid condensation to prevent Stress control from arriving desired pressure with the residual volume of the pressure and liquid that depend on pressure supply pipe by the residual volume of liquid to use residual volume detection sensor to check.
According to one exemplary embodiment of the present invention, by preventing for the liquid condensation in the nozzle of the syringe of divider to make the minimize contamination of the surrounding of nozzle.Therefore, the inconvenience of nozzle cleaning operation can be solved.In addition, according to one exemplary embodiment of the present invention, speed is responded in the discharge improved in the nozzle being inhaled into syringe by preventing liquid when next time discharging.
Accompanying drawing explanation
Fig. 1 illustrates that jelly pattern is formed at the figure of the outward appearance of the edge on the surface for single panel.
Fig. 2 is the skeleton view of the equipment for discharging pastel.
Fig. 3 illustrates the figure according to the equipment for preventing the cohesion in the nozzle of syringe of one exemplary embodiment of the present invention.
Fig. 4 illustrates the process flow diagram preventing the process of the liquid condensation in divider according to one exemplary embodiment of the present invention.
Embodiment
Hereafter will describe exemplary embodiment of the present invention in detail referring to accompanying drawing.But the present invention is limited to hereafter disclosed one exemplary embodiment, but can implement in various different formats.To only provide these one exemplary embodiment to make disclosure of the present invention complete, and allow those skilled in the art to recognize scope of the present invention completely.Assembly on accompanying drawing can through amplifying to describe the present invention, and same components will be represented by same reference numbers.
Fig. 2 is the skeleton view of the equipment for discharging pastel.
Hereafter, although (such as) is described as the example of divider by the present invention for the equipment discharging pastel, obviously, except for discharging except the equipment of pastel, the present invention also can be applicable to the equipment for discharging various liquid, such as, for discharging the equipment of liquid crystal.Herein, the example of liquid can comprise there is low-viscosity liquid (such as, water), there is full-bodied liquid (such as, liquid crystal, colloidal sol, various mixing material, slurry and pastel) and liquid mixture.
One exemplary embodiment exhaust apparatus according to the present invention comprises the divider that substrate is located platform 30 thereon and comprises syringe 100, described syringe 100 has nozzle 110, the pastel for raw material is discharged into substrate 10 on platform 30 to form jelly pattern 20 by described nozzle 110.
Substrate S can be any one in the upper substrate and lower substrate used in display panels.In the case, although do not illustrate in upper substrate, (such as) colored filter and common electrode are formed in upper substrate, and (such as) thin film transistor (TFT) and pixel electrode are formed in lower substrate.In addition, when by forming display panels in conjunction with upper substrate and lower substrate, the multiple pattern P be made up of metal pastel can be formed in any one in upper substrate and lower substrate to conduct between upper substrate and lower substrate.According to one exemplary embodiment of the present invention, by (such as) silver (Ag) pastel as being stored in the syringe 100 of divider and the pastel be discharged in substrate S.
Syringe 100 is mobile to form pattern P in substrate S in X-axis and Y direction by buanch unit.In the case, platform 30 and syringe 100 are moved (actuation movement) by the drive unit of such as motor and track.Certainly, various devices in addition can be used.Multiple syringe 100 moves (actuation movement) by single drive unit.Herein, driver element can be controlled by single buanch unit to drive all syringes 100 simultaneously.
The foregoing describe the situation of syringe 100 flatly movement in X-axis and Y direction.But the present invention is not limited to this, and therefore platform 30 can move that pastel is discharged into substrate 10 in X-axis and Y direction.In addition, both platform 30 and syringe 100 all can move to discharge pastel in X-axis and Y direction, and platform 30 move on an axis direction and syringe 100 can to move with discharge on another axis direction be the pastel of liquid.
Though undeclared, divider comprises range sensor (undeclared).Range sensor is spaced apart with the gap between gaging nozzle 110 and substrate 10 with nozzle 110 through installing.Range sensor is configured with towards the radiative luminescence unit of substrate 10 (undeclared) and the light receiving unit (undeclared) receiving the light launched from luminescence unit (undeclared).In the case, luminescence unit (undeclared) and light receiving unit (undeclared) are configured to one, and can through settling with the preset distance that is spaced from each other.In addition, syringe 100 rises based on the measured value measured by range sensor and declines, and can be therefore (such as) 40 μm by the clearance control between substrate 10 and nozzle 110.
But, after discharge jelly pattern, need the stand-by period forming ensuing jelly pattern.Now, liquid condensation (drop) occurs in the tip of nozzle.Liquid condensation is coalescent because of the pressure of the raw-material scallop-height generation in the pastel reason syringe 100 at the lower end place of nozzle.
In order to prevent the liquid condensation of the end at nozzle, one exemplary embodiment of the present invention checks the residual volume of remaining pastel after the discharge of pastel in syringe 100, and perform the internal pressure controlled to maintain syringe 100 for each step, prevent the liquid condensation of the residual volume owing to pastel thus.This will describe referring to Fig. 3.
Fig. 3 illustrates the figure according to the equipment for preventing the liquid condensation in the nozzle of syringe of one exemplary embodiment of the present invention.
The syringe 100 being filled with pastel is installed to the head unit (undeclared) of configuration divider, and nozzle 110 is arranged under syringe 100.By nozzle 110, the pastel be filled in syringe 100 is discharged into outside, and the substrate 10 therefore on platform 30 is formed with jelly pattern.The residual volume detection sensor 420 of the residual volume of the liquid in sensing syringe can be connected to syringe 100.
For preventing the equipment of the liquid condensation in divider from comprising valve module 200, its carry out opening and closing for determine whether syringe 100 and valve module 200 is connected to syringe 100 pressure supply pipe 500 in pressure is provided.Valve module 200 comprises: malleation valve 240, and presetting malleation is provided to pressure supply pipe 500 by it; Atmospheric pressure valve 230, atmospheric pressure is provided to pressure supply pipe 500 by it; First negative pressure valve 210, the first negative pressure is provided to pressure supply pipe 500 by it; With the second negative pressure valve 220, the second negative pressure is provided to pressure supply pipe 500 by it.
Malleation valve 240 carries out opening and closing inert gas (such as, Ar, the N for determining whether to provide from malleation supply module 330 under being the set pressure of just (+) pressure pattern
2gas) be provided to pressure supply pipe 500.When opening malleation valve 240, the inert gas of malleation is provided to pressure supply pipe 500, and when turning off malleation valve 240, the malleation by malleation valve 240 is not provided to pressure supply pipe 500.Just (+) pressure is presetting pressure and is provided by malleation supply module 330.In the case, malleation meaning is equal to or greater than the pressure of any reference or normal pressure.Such as, when reference pressure is zero (0), malleation meaning is equal to or greater than the pressure of zero.Malleation supply module 330 can comprise compression generator 331, raised pressure compressor reducer 332 and proportional pressure control valve 333.When compression generator 331 produces predetermined pressure inert gas to be provided to raised pressure compressor reducer 332, inert gas is provided to proportional pressure control valve 333 by raised pressure compressor reducer 332, thus by the pressure increase of inert gas to 1MPa, and the inert gas increasing to 1MPa is controlled the malleation (such as, about 0 to 10Kpa) for setting and in check inert gas is provided to the entrance of malleation valve 240 by proportional control valve 333.
Atmospheric pressure valve 230 carries out opening and closing, for determining whether, atmospheric pressure is provided to pressure supply pipe 500.When opening atmospheric pressure valve 230, under pressure supply pipe 500 is maintained outside atmospheric pressure, and when turning off atmospheric pressure valve 230, outside atmosphere pressure is not provided to pressure supply pipe 500.
First negative pressure valve 210 carries out opening and closing, for determining whether, the first negative pressure is provided to pressure supply pipe 500 from the first negative voltage supply module 310.When opening the first negative pressure valve 210, the first negative pressure is provided to pressure supply pipe 500, and when turning off the first negative pressure valve 210, the first negative pressure by the first negative pressure valve 210 is not provided to pressure supply pipe 500.First negative (-) pressure has the first negative pressure value of setting.In the case, negative pressure meaning is less than the pressure of any reference or normal pressure.Such as, when normal pressure is zero (0), negative pressure means minus pressure, that is, negative pressure.The first negative pressure is provided by the first negative voltage supply module 310.First negative voltage supply module 310 can comprise the first vacuum pump 311 and the first degree of accuracy vacuum governor 312.When the first vacuum pump 311 produces the first negative pressure, degree of accuracy vacuum governor 312 control the first negative pressure be desired first negative value (such as, first negative pressure of-20Kpa to-10Kpa), and in check first negative pressure is provided to the entrance of the first negative pressure valve 210.
Second negative pressure valve 220 carries out the second negative pressure opened and closed for determining whether the tiny structure for being less than the first negative pressure provided from the first negative pressure valve 210 and is provided to pressure supply pipe 500 from the second negative voltage supply module 320.When opening the second negative pressure valve 220, the second negative pressure is provided to pressure supply pipe 500, and when turning off the second negative pressure valve 220, the second negative pressure by the second negative pressure valve 220 is not provided to pressure supply pipe 500.Second negative pressure is had the second negative pressure value of setting and is provided by the second negative voltage supply module 320.In the case, the second negative pressure is the pressure compared with the first negative pressure described above, and is less than the first negative pressure as negative value.That is, the absolute value of the second negative pressure is less than the absolute value of the first negative pressure.Therefore, as compared with the first negative pressure, under being negative direction is applied to the power of object, the second negative pressure is even more weak.Second negative voltage supply module 320 can comprise the second vacuum pump 321 and the second degree of accuracy vacuum governor 322.When the second vacuum pump 321 produces negative pressure, second degree of accuracy vacuum governor 322 is produced as second negative pressure (such as, being the second negative pressure of-3Kpa to-1Kpa of tiny structure) of the pressure being less than the first negative pressure and the second negative pressure produced is provided to the entrance of the second negative pressure valve 220.In order to reference, malleation valve 240, atmospheric pressure valve 230, first negative pressure valve 210 and the second negative pressure valve 220 can be embodied as electromagnetic electronic valve.
Pressure supply pipe 500 is malleation valve 240, atmospheric pressure valve 230, first negative pressure valve 210 is communicated with using the supply pipe passed through as a supply pipe with syringe 100 with the first negative pressure valve 220.Therefore, pressure in pressure supply pipe 500 depends on malleation valve 240, atmospheric pressure valve 230, first negative pressure valve 210 and the first negative pressure valve 220, and whether each is opened and changes, and therefore impact is connected to the discharge pressure of the pastel in the syringe 100 of pressure supply pipe 500.Therefore, the pressure in pressure supply pipe 500 equals the pressure of the pastel be applied in syringe 100.In addition, the pressure-sensing sensor 410 of the pressure in pressure sensor supply pipe 500 can be provided further.
Open and close controller 600 and the discharge supply pressure in malleation form is provided to the pressure supply pipe 500 of syringe 100 to control malleation valve 240, atmospheric pressure valve 230, first negative pressure valve 210 and the first negative pressure valve 220 respectively, to pass through nozzle 110 discharge liquid of syringe 100.Namely, when hope discharges pastel by syringe 100, open and close controller 600 and turn off atmospheric pressure valve 230, first negative pressure valve 210 and the second negative pressure valve 220 and only open malleation valve 240 so that the discharge supply pressure in malleation form is provided to pressure supply pipe 500.
In addition, open and close controller 600 to be controlled, for stoping the discharge of pastel to prevent pastel to be inhaled into the inside of nozzle, to prevent pastel to be discharged by following two methods simultaneously.
For prevent pastel be inhaled in nozzle the first method simultaneously preventing pastel to be discharged first turn off malleation valve 240, second negative pressure valve 220, atmospheric pressure valve 230 and only open the first negative pressure valve 210 with by the first negative pressure form by discharge stop pressure be provided to pressure supply pipe 500, thus stop liquid be discharged.In order to stop the pastel by nozzle discharge, only opening the first negative pressure valve 210 so that first negative pressure of scope from-20Kpa to-10Kpa is provided to pressure supply pipe 500, stoping pressure as discharge.Next, in order to prevent the liquid condensation in nozzle, turning off malleation valve 240, atmospheric pressure valve 230 and the first negative pressure valve 210 and only open the second negative pressure valve 220 so that the second negative pressure is provided to pressure supply pipe 500, stoping the liquid condensation of pressure to prevent pressure as being less than discharge.Opening the second negative pressure valve 220 prevents pressure to be sucked in nozzle to prevent pastel second negative pressure of the scope for micro-pressure from-3Kpa to-1Kpa to be provided to pressure supply pipe 500 as liquid condensation, prevents the pastel for liquid from discharging from the nozzle 110 of syringe 100 simultaneously.
In addition, for prevent pastel be inhaled in nozzle the second method simultaneously preventing pastel to be discharged first turn off malleation valve 240, second negative pressure valve 220, atmospheric pressure valve 230 and only open the first negative pressure valve 210 with by the first negative pressure form by discharge stop pressure be provided to pressure supply pipe 500, thus stop liquid be discharged.Next, turning off atmospheric pressure valve 230 and the second negative pressure valve 220 and open malleation valve 240 and the first negative pressure valve 210 so that the differential pressure between malleation and the first negative pressure is provided to pressure supply pipe 500, stoping the liquid condensation of pressure to prevent pressure as being less than discharge.Differential pressure between malleation and the first negative pressure results from pressure supply pipe 500.Such as, being produced as the pressure of-3Kpa to-1Kpa of the differential pressure that the malleation by first negative pressure of-20Kpa to-10Kpa being added to 0Kpa to 17Kpa obtains, can being maintained in pressure supply pipe 500, preventing pressure as liquid condensation.When the first method, need to convert the first negative pressure state to second negative pressure, and therefore, respond speed relatively low.On the other hand, as the second method, the discharge of liquid stops and then adding malleation preventing pressure as between malleation and the first negative pressure and differential pressure to provide liquid condensation immediately, makes the response speed of the discharge of prevention pastel accelerate thus.
Meanwhile, opening and closing controller 600 can stop pressure and liquid condensation to prevent pressure by control discharge.In atmosphere pressure state after discharge liquid, opening and closing controller 600 uses pressure-sensing sensor 410 to calculate the pressure of pressure supply pipe 500, and discharge stops pressure and liquid condensation to prevent Stress control from arriving desired pressure with the residual volume of the pressure and pastel that depend on pressure supply pipe 500 by the residual volume using residual volume detection sensor 420 to calculate the pastel (liquid) in syringe.Such as, in the atmosphere pressure state of not discharge liquid, when by the first negative pressure inspection of pressure supply pipe 500 for reducing time, pastel can be discharged, and therefore can more increase liquid condensation and prevent pressure.On the contrary, in the atmosphere pressure state of not discharge liquid, when using the pressure inspection of pressure supply pipe 500 for having high first negative pressure as negative value time, conversely pastel can be incorporated in nozzle and therefore can more to reduce liquid condensation and prevent pressure.
Fig. 4 illustrates the process flow diagram preventing the process of the liquid condensation in divider according to one exemplary embodiment of the present invention.
Perform the process (S410) coming by the nozzle discharge liquid of syringe 100 by by malleation form discharge supply pressure being provided to the pressure supply pipe 500 being connected to syringe 100.When wishing discharge liquid, turn off the atmospheric pressure valve 230 atmospheric pressure being provided to pressure supply pipe 500, the first negative pressure valve 210 the first negative pressure being provided to pressure supply pipe 500 and the second negative pressure of the pressure for being less than the first negative pressure be provided to the second negative pressure valve 220 of pressure supply pipe 500, and only open presetting malleation is provided to pressure supply pipe 500 malleation valve 240 malleation is provided to pressure supply pipe 500 as discharge supply pressure.
In order to be prevented the liquid condensation in nozzle by the discharge of prevention pastel when the nozzle by syringe 100 is applied for the pastel of liquid, first, pressure is stoped to be provided to pressure supply pipe 500 to stop the discharge (S420) of pastel the discharge in the first negative pressure form.Turn off malleation valve 240, second negative pressure valve 220 and atmospheric pressure valve 230 and only open the first negative pressure valve 210 and stop pressure the first negative pressure to be provided to pressure supply pipe 500 as discharge.First negative pressure has the size of scope from-20Kpa to-10Kpa to destroy the pastel of pastel syringe 100 and discharge.But, first can perform process discharge pressure state being converted to atmosphere pressure state before applying first negative pressure.Namely, turn off malleation valve 240, first negative pressure valve 210 and the second negative pressure valve 220 and only open atmospheric pressure valve 230 to convert pressure supply pipe 500 to atmosphere pressure state, and then only open the first negative pressure valve 210, thus the first negative pressure is provided to pressure supply pipe 500 and stops pressure as discharge.The discharge discharge pressure of malleation form being converted immediately to the first negative pressure stops the peripheral unit of pressure-affectable such as valve, and therefore can perform process discharge pressure being converted to atmosphere pressure state and then discharge prevention pressure.
After stoping pastel to stop the nozzle of syringe 100, perform the liquid condensation being provided as the pressure being less than discharge prevention pressure and prevent pressure as absolute value to prevent the liquid condensation in nozzle and to prevent pastel to be introduced in the process (S430) of the inside of nozzle.Even after discharge stops, when providing the first negative pressure of the size with-20Kpa to-10Kpa continuously, the problem be incorporated into by pastel conversely in nozzle can be there is.Therefore, in order to prevent above problem, after the discharge of pastel stops, providing the liquid condensation being less than the first negative pressure to prevent pressure to prevent the liquid condensation in nozzle and to prevent pastel to be incorporated in nozzle conversely.
The method that inside for preventing pastel to be inhaled into nozzle prevents pastel to be discharged simultaneously can be formed by following two methods.
Being inhaled in nozzle for preventing pastel the first method simultaneously preventing pastel to be discharged turn off malleation valve 240, atmospheric pressure valve 230 and the first negative pressure valve 210 and only open the second negative pressure valve 220 so that the second negative pressure is provided to pressure supply pipe 500, stoping the liquid condensation of pressure to prevent pressure as being less than discharge.Opening the second negative pressure valve 220 prevents pressure to be sucked in nozzle to prevent pastel second negative pressure of the scope for micro-pressure from-3Kpa to-1Kpa to be provided to pressure supply pipe 500 as liquid condensation, prevents the pastel for liquid from discharging from the nozzle 110 of syringe 100 simultaneously.
In addition, being inhaled in nozzle for preventing pastel the second method simultaneously preventing pastel to be discharged turn off atmospheric pressure valve 230 and the second negative pressure valve 220 and open malleation valve 240 and the first negative pressure valve 210 so that the differential pressure between malleation and the first negative pressure is provided to pressure supply pipe 500, stoping the liquid condensation of pressure to prevent pressure as being less than discharge.Such as, the positive pressure range of usable range from 0Kpa to-17Kpa and the first negative pressure from-20Kpa to-10Kpa, and therefore described differential pressure, as differential pressure therebetween, can be provided to pressure supply pipe 500 and prevent pressure as liquid condensation by the pressure of generation-3Kpa to-1Kpa.The discharge of liquid stops, and then provides malleation to prevent pressure as the differential pressure between malleation and the first negative pressure to provide liquid condensation immediately, makes the response speed of the discharge of prevention pastel accelerate thus.
The present invention describes referring to accompanying drawing and foregoing example embodiment, but it is not limited to this, and is limited by appended claims.The present invention hereafter differently can be changed when the technical spirit of claims of description and revise when not departing from by those skilled in the art.
Claims (13)
1. for preventing a method for the liquid condensation in divider, it is characterized in that, comprising:
By by malleation form discharge supply pressure being provided to the nozzle discharge liquid that the pressure supply pipe being connected to syringe comes by described syringe;
When hope stops the described liquid of discharge, by stoping pressure to be provided to the described discharge that described pressure supply pipe stops described liquid discharge by the first negative pressure form; And
By stoping the described discharge of described liquid and then by for being less than the described liquid condensation that described discharge stops the liquid condensation of the second negative pressure of pressure to prevent pressure to be provided to described pressure supply pipe to prevent in described nozzle.
2. method according to claim 1, it is characterized in that, the described discharge of described liquid comprises described malleation is provided to described pressure supply pipe as described discharge supply pressure, its by turning off, atmospheric pressure is provided to described pressure supply pipe atmospheric pressure valve, the first negative pressure be provided to the first negative pressure valve of described pressure supply pipe and the second negative pressure of the pressure for being less than described first negative pressure be provided to the second negative pressure valve of described pressure supply pipe, and open the malleation valve presetting malleation being provided to described pressure supply pipe.
3. method according to claim 2, it is characterized in that, the described prevention of the described discharge of described liquid comprises and described first negative pressure is provided to described pressure supply pipe stops pressure by turning off described malleation valve, described second negative pressure valve, described atmospheric pressure valve and only opening the first negative pressure valve as described discharge.
4. method according to claim 3, it is characterized in that, the described prevention of the described discharge of described liquid comprises and described first negative pressure is provided to described pressure supply pipe stops pressure as described discharge, it by being transformed into atmosphere pressure state by turning off described malleation valve, described first negative pressure valve and described second negative pressure valve and only opening pressure supply pipe described in described atmospheric pressure valve goalkeeper, and then only opens described first negative pressure valve.
5. method according to claim 2, it is characterized in that, described in the described liquid condensation in described nozzle, prevent from comprising described second negative pressure is provided to described pressure supply pipe prevents pressure by turning off described malleation valve, described atmospheric pressure valve and described first negative pressure valve and only opening described second negative pressure valve as described liquid condensation.
6. method according to claim 2, it is characterized in that, described in the described liquid condensation in described nozzle, prevent from comprising the differential pressure between described malleation and described first negative pressure is provided to described pressure supply pipe prevents pressure by turning off described atmospheric pressure valve and described second negative pressure valve and opening described malleation valve and described first negative pressure valve as described liquid condensation.
7., according to described method arbitrary in claim 2 to 6, it is characterized in that, described second negative pressure is less than described first negative pressure.
8. method according to claim 7, is characterized in that, described first range of negative pressure is from-20Kpa to-10Kpa.
9. method according to claim 7, is characterized in that, described second range of negative pressure is from-3Kpa to-1Kpa.
10. for preventing an equipment for the liquid condensation in divider, it is characterized in that, comprising:
Malleation valve, it is configured to presetting malleation to be provided to pressure supply pipe;
Atmospheric pressure valve, it is configured to atmospheric pressure is provided to described pressure supply pipe;
First negative pressure valve, it is configured to the first negative pressure to be provided to described pressure supply pipe;
Second negative pressure valve, it is configured to the second negative pressure being less than described first negative pressure to be provided to described pressure supply pipe;
Described pressure supply pipe, it is configured to allow described malleation valve, described atmospheric pressure valve, described first negative pressure valve and described second negative pressure valve be communicated with as a supply pipe with syringe; And
Open and close controller, it is configured to when stoping described liquid from described syringe discharge, turn off described malleation valve, described second negative pressure valve and described atmospheric pressure valve and only open described first negative pressure valve to stop pressure to be provided to described pressure supply pipe discharge by the first negative pressure form, and then turn off described malleation valve, described atmospheric pressure valve and described first negative pressure valve and open described second negative pressure valve and prevent pressure so that described second negative pressure is provided to described pressure supply pipe as liquid condensation.
11. 1 kinds for preventing the equipment of the liquid condensation in divider, is characterized in that, comprising:
Malleation valve, it is configured to presetting malleation to be provided to pressure supply pipe;
Atmospheric pressure valve, it is configured to atmospheric pressure is provided to described pressure supply pipe;
First negative pressure valve, it is configured to the first negative pressure to be provided to described pressure supply pipe;
Second negative pressure valve, it is configured to the second negative pressure being less than described first negative pressure to be provided to described pressure supply pipe;
Described pressure supply pipe, it is configured to allow described malleation valve, described atmospheric pressure valve, described first negative pressure valve and described second negative pressure valve be communicated with as a supply pipe with syringe; And
Open and close controller, it is configured to when stoping described liquid from described syringe discharge, turn off described malleation valve, described second negative pressure valve and described atmospheric pressure valve and only open described first negative pressure valve with by the first negative pressure form by discharge stop pressure be provided to described pressure supply pipe, and then turn off described atmospheric pressure valve and described second negative pressure valve and open described malleation valve and described first negative pressure valve prevents pressure so that the differential pressure between described malleation and described first negative pressure is provided to described pressure supply pipe as liquid condensation.
12. equipment according to claim 10 or 11, is characterized in that comprising further:
Pressure-sensing sensor, it is configured to the pressure checking described pressure supply pipe; And
Residual volume detection sensor, it is configured to the residual volume of the described liquid sensing described syringe.
13. equipment according to claim 12, it is characterized in that, described opening and closing controller checks the described pressure of described pressure supply pipe at described liquid described pressure-sensing sensor be used in atmosphere pressure state after discharge, and described discharge stops pressure and described liquid condensation to prevent Stress control from arriving desired pressure with the described residual volume of the described pressure and described liquid that depend on described pressure supply pipe by the described residual volume of described liquid to use described residual volume detection sensor to check.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0028723 | 2014-03-12 | ||
| KR1020140028723A KR101597236B1 (en) | 2014-03-12 | 2014-03-12 | Apparatus for protecting dispenser condensation and method for operating the same |
Publications (2)
| Publication Number | Publication Date |
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| CN104914597A true CN104914597A (en) | 2015-09-16 |
| CN104914597B CN104914597B (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510106594.9A Expired - Fee Related CN104914597B (en) | 2014-03-12 | 2015-03-11 | For preventing the method and equipment of the liquid condensation in distributor |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101597236B1 (en) |
| CN (1) | CN104914597B (en) |
| TW (1) | TWI660792B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110621415A (en) * | 2017-05-31 | 2019-12-27 | 欧瑞康美科（美国）公司 | Powder feed control system and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102153183B1 (en) * | 2018-11-23 | 2020-09-07 | 김정선 | pressure controller for meniscus pressure of ink-jet nozzle |
| KR102490968B1 (en) * | 2020-11-19 | 2023-01-26 | 김숭현 | dispenser capable of precisely controlling meniscus of syringe |
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| KR101911701B1 (en) * | 2011-12-28 | 2018-10-26 | 주식회사 탑 엔지니어링 | Paste dispenser and method for controlling the same |
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- 2014-03-12 KR KR1020140028723A patent/KR101597236B1/en active IP Right Grant
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- 2015-03-11 CN CN201510106594.9A patent/CN104914597B/en not_active Expired - Fee Related
- 2015-03-12 TW TW104107832A patent/TWI660792B/en not_active IP Right Cessation
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| CN1550829A (en) * | 2003-05-09 | 2004-12-01 | Lg.菲利浦Lcd株式会社 | Liquid crystal distributing system and method for distributing liquid crystal material using said system |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI660792B (en) | 2019-06-01 |
| CN104914597B (en) | 2019-06-04 |
| KR20150106538A (en) | 2015-09-22 |
| TW201534403A (en) | 2015-09-16 |
| KR101597236B1 (en) | 2016-02-25 |
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