CN111185347A - Quantitative discharge device - Google Patents
Quantitative discharge device Download PDFInfo
- Publication number
- CN111185347A CN111185347A CN201910982079.5A CN201910982079A CN111185347A CN 111185347 A CN111185347 A CN 111185347A CN 201910982079 A CN201910982079 A CN 201910982079A CN 111185347 A CN111185347 A CN 111185347A
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- Prior art keywords
- discharge device
- control valve
- discharge
- flow
- valve
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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
- 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
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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
- 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
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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
- 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
- B05C11/1026—Valves
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0238—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants utilising compressed air or other gas acting directly or indirectly on liquids in storage containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0288—Container connection means
- B67D7/0294—Combined with valves
Abstract
The invention is used as a discharge device for discharging liquid in a syringe by gas supplied from a compressed gas source, and comprises a flow regulating tool for regulating the flow supplied to the syringe according to the residual quantity of the liquid in the syringe. Accordingly, the characteristics of the pressure wave transmitted to the nozzle are changed for the remaining solution of the syringe reduced according to the discharge, the area (open area) of the pipe is controlled, and even if the remaining solution is changed, the predetermined pressure wave is transmitted to the nozzle, so that the quantitative discharge can be realized. In addition, one or more flow rate adjusting tools are provided in the pipe constituting the constant-rate discharge device, and the opening area of the flow rate adjusting tool is increased in proportion to the gradual increase of the space in the discharge cylinder by repeating the discharge operation, so that the discharge amount can be kept constant.
Description
Technical Field
The present invention relates to a quantitative discharge device, and more particularly, to a dispenser capable of discharging liquid materials (resin, conductive adhesive, UV resin, various pastes) of various viscosities in a precisely quantitative manner.
Background
The pneumatic dispenser is constructed in such a manner that a pressure is applied to a syringe in the shape of an injector for a predetermined time to discharge the liquid in the syringe. A typical dispenser is constituted by an electronic valve, and controls high-pressure air flowing from an external air source at a predetermined pressure by 2 proportional control valves (regulators), and switches between supply to a first pipe for discharge and a second pipe for suction prevention and leakage prevention vacuum.
At ordinary times, the electronic valve opens the second pipeline to carry out vacuum operation, liquid absorption and leakage in the needle cylinder are prevented, if the discharge signal is started, the second pipeline is closed, the first pipeline is opened, liquid is discharged, after a preset time, the exhaust valve is opened to discharge air, then the first pipeline is closed, and the second pipeline is opened again to keep vacuum.
When the discharge process and the vacuum maintaining process are repeated as described above, the discharge amount gradually decreases as the liquid in the cylinder decreases and the space in the cylinder increases and the time for filling the space gradually decreases as shown in fig. 1, and thus there is a problem that the discharge amount cannot be quantitatively discharged.
To solve such a problem, the related art increases the pressure of the proportional control valve or delays the opening time of the electronic valve to achieve quantitative discharge.
However, the method of increasing the pressure of the control valve has the following problems: the method of quantitatively discharging the fuel by extending the opening time of the electronic valve is more stable than the pressure control because the error rate becomes high due to the characteristic pulsation phenomenon of the air and the desired discharge amount cannot be satisfied when the response time to the desired pressure is delayed.
(Prior art document)
(patent document)
(patent document 1) Korean laid-open patent publication No. 10-2017-0140117 (automatic quantitative liquid discharge device)
(patent document 2) Korean registered patent publication No. 10-0985754 (photosensitive liquid quantitative discharge monitoring system)
Disclosure of Invention
(problem to be solved)
The present invention has been made to solve the above problems, and an object of the present invention is to provide a constant-volume discharge device including: the characteristics of the pressure wave transmitted to the nozzle are changed according to the remaining solution of the syringe reduced by the discharge, the area (opening area) of the pipe is controlled, and the predetermined pressure wave can be transmitted to the nozzle even if the remaining solution is changed.
Another object of the present invention is to provide a quantitative discharge device as follows: the discharge rate can be kept constant by providing one or more flow rate control means in the pipe constituting the constant discharge device and increasing the opening area of the flow rate control means in proportion to the gradual increase in the space in the discharge cylinder by repeating the discharge.
(means for solving the problems)
The above object can be achieved by a metering discharge device as follows: as a discharge device, a liquid in the cylinder is discharged by a gas supplied from a compressed gas source, including a flow rate adjusting means that adjusts a flow rate supplied to the cylinder according to a remaining amount of the liquid in the cylinder.
Here, the quantitative discharge device includes: a source of compressed gas; an electronic valve connected to the compressed gas source and determining whether to supply gas of an adjusted pressure to the cylinder; a first proportional control valve disposed in a first discharge pipe that communicates the compressed gas source and the electronic valve; a second proportional control valve disposed in a second vacuum pipe connecting the compressed gas source and the electronic valve; a cylinder discharging the liquid filled inside by the gas supply of the electronic valve; a control unit for controlling the compressed gas source, the electronic valve, the first proportional control valve, and the second proportional control valve; wherein the flow regulating means is configured as a flow regulating control device provided in a conduit constituted by the fixed-amount discharge device.
In addition, the flow rate adjustment control device may include a flow rate control valve that changes an area of the pipe provided according to control of the control portion.
In addition, the flow rate adjustment control device may further include a pulsation stabilizing device that prevents a pulsation phenomenon in the installed pipe.
On the other hand, the flow control valve is provided in plurality in the constant-volume discharge device.
Here, the flow control valve is disposed in a pipe connecting the electronic valve and the syringe, and the area of the pipe supplied to the syringe can be increased by the control of the control unit in inverse proportion to the remaining amount of the liquid in the syringe.
In addition, the flow control valve may be disposed on a first pipe connecting the first proportional control valve and the electronic valve.
In addition, the flow control valve may be disposed on a second pipe connecting the second proportional control valve and the electronic valve.
(Effect of the invention)
According to the present invention, the characteristics of the pressure wave transmitted to the nozzle are changed for the remaining solution in the cylinder which is reduced according to the discharge, the area (open area) of the pipe is controlled, and even if the remaining solution is changed, the predetermined pressure wave can be transmitted to the nozzle, so that the quantitative discharge can be realized.
In addition, one or more flow rate adjusting tools are provided in the pipe constituting the constant-rate discharge device, and the opening area of the flow rate adjusting tool is increased in proportion to the gradual increase of the space in the discharge cylinder by repeating the discharge operation, so that the discharge amount can be kept constant.
Drawings
Fig. 1 is a schematic view illustrating a phenomenon in which a discharge amount is changed according to a remaining amount of liquid inside a cylinder as discharge is repeatedly performed;
FIG. 2 is a block diagram of the metering device of the present invention;
FIG. 3 is a block diagram illustrating another embodiment of the metered dose discharge device of the present invention;
FIG. 4 is a block diagram illustrating another embodiment of the metered dose discharge device of the present invention;
FIG. 5 is a schematic diagram showing the correlation between the pressure wave delivered to the nozzle according to the open area of the conduit and the mean value of the pressure wave in order to achieve a quantitative discharge;
fig. 6 to 12 are comparative diagrams showing response pressures obtained when the opening area is changed according to the remaining amount of fluid in the cylinder.
(description of reference numerals)
100: quantitative discharge device
10: compressed gas source
20: electronic valve
30: first proportional control valve
40: second proportional control valve
50: needle cylinder
60: control unit
70: flow regulation control device
72. 72a, 72b, 72 c: flow control valve
74: pulsation stabilizing device
Detailed Description
Hereinafter, the structure of the present invention will be described in detail with reference to the drawings.
Heretofore, if it is judged that detailed description of related known techniques may make the gist of the present invention unclear, detailed description thereof will be omitted. In the present specification, when it is described that one component is "connected" or "connected" to another component, the one component may be directly connected or connected to the other component, but it is also understood that the one component may be connected or connected to the other component with intervening components unless otherwise specified.
That is, the terms used in the present specification and claims should not be construed as being limited to dictionary meanings, and the terms should be construed as meanings and concepts conforming to the technical idea of the present invention on the basis of the principle that the concepts of the terms can be appropriately defined in order to explain the present invention in a best way.
Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and do not fully describe the technical idea of the present invention, and therefore it should be understood that various equivalents and modifications may be substituted in the standpoint of the present application.
FIG. 2 is a block diagram of the metering device of the present invention; FIG. 3 is a block diagram illustrating another embodiment of the metered dose discharge device of the present invention; FIG. 4 is a block diagram illustrating another embodiment of the metered dose discharge device of the present invention; FIG. 5 is a schematic diagram showing the correlation between the pressure wave delivered to the nozzle according to the open area of the conduit and the mean value of the pressure wave in order to achieve a quantitative discharge; fig. 6 and 12 are schematic diagrams comparing response pressures obtained when the opening area is changed according to the remaining amount of liquid in the cylinder.
Referring to fig. 2 to 4, the quantitative discharge device 100 of the present invention includes: a compressed gas source 10, an electronic valve 20, first and second proportional control valves 30 and 40, a syringe 50, a control unit 60 constituted by an embedded system, and a flow rate adjustment control device 70. In addition, pressure sensors (not shown) for detecting information of input pressure and output pressure are disposed at the front and rear ends of the flow rate adjustment control device 70, and wiring is provided to electrically connect the valves, the connection pipes of the syringes 50, and the above-described respective structures and the control section 60.
Here, the compressed gas source 10 is configured to supply pressure-regulated gas into the quantitative discharge device 100, and the electronic valve 20 is connected to the compressed gas source 10 and configured to determine whether or not to supply pressure-regulated gas to the syringe 50, and is configured as an electromagnetic valve that is opened and closed in accordance with an electrical control signal transmitted from the control unit 60 to switch between a discharge state and a vacuum state (discharge state, prevention of liquid leakage).
The first proportional control valve 30 is disposed on a first pipe for discharge communicating the compressed gas source 10 and the electronic valve 20, and the second proportional control valve 40 is disposed on a second pipe for vacuum communicating the compressed gas source 10 and the electronic valve 20, and performs a function of supplying a pressure to deliver the operation fluid from the nozzle of the cylinder 50 to the outside while maintaining the balance. That is, the first and second proportional control valves 30 and 40 are operated under the control of the control unit 60 during discharge and standby, respectively, and are configured to maintain the controlled pressures in the nozzle and the pipe of the syringe 50 of the constant-volume discharge device 100.
The syringe 50 is configured to supply gas through the electronic valve 20 and discharge the liquid filled therein, and the controller 60 controls the above-described respective configurations and the driving of the flow rate adjustment control device 70 and the exhaust valve to be described later.
Here, the exhaust valve and the vacuum exhaust shown in fig. 2 to 4 apply vacuum pressure to the pipes and tubes connected to the needle cylinder 50 to prevent the solution inside the needle cylinder 50 from leaking to the outside in a standby (non-discharge) state.
The flow rate adjustment control device 70 is a characteristic structure of the present invention, is provided in a pipe formed by the constant discharge device 100, and may include a flow rate control valve 72 and a storage part (not shown) to which characteristics of a pressure wave transmitted to a nozzle according to a variation in the amount of remaining liquid filled in the syringe 50 when discharge is performed by input pressure and pressure application time have been input, the flow rate control valve 72 adjusting an area (opening degree) of the pipe, and thus a flow area of supplied compressed air.
Specifically, with the flow control valve 72, the flow area of the pipe through which the compressed air flows is controlled by the flow control valve 72, that is, the flow area is adjusted, according to the remaining solution due to the reduction in discharge, and the pressure correction value corresponding to the reduced remaining solution is applied, and thus uniform discharge of the liquid can be achieved.
As shown in FIGS. 5-12, this concept of controlling the flow area is based on the phenomenon that the opening rate η of the conduit is regulated by the flow control valve to differently display the pressure wave communicated to the nozzle, i.e., the relationship between the residual solution and the average pressure has the characteristics of hydrodynamic characteristics, with the average pressure P being increased with the same applied pressure as the residual solution α increasesavgThe average pressure of the pressure wave transmitted to the nozzle increases as the opening rate of the pipe increases, and this characteristic controls the operation of the flow control valve 72 and the input value that enables the valve opening rate η of each remaining solution, which enables a predetermined average pressure to be achieved at the nozzle, to achieve a fixed amount of discharge.
The flow control valve 72 operates as follows.
First, the first and second proportional control valves 30 and 40 are controlled by a set discharge pressure/vacuum pressure, and when the control part 60 or an external device (controller, robot, etc.) receives a discharge signal, the set electronic valve 20 is opened for a set time period to discharge the liquid in the cylinder 50, and air is discharged through the discharge valve before closing the electronic valve 20, and then the state of the tube is maintained by vacuum. At this time, the flow control valve 72 passes air with an area set in advance, and when the liquid in the cylinder 50 decreases while the discharge is proceeding, the vacuum pressure is reduced in proportion to the liquid amount to prevent the liquid suction and the liquid leakage. At the same time, the area of the flow control valve 72 also increases in inverse proportion to the amount of liquid, thereby achieving quantitative discharge.
Here, in the control of the opening rate (η) of the flow rate control valve 72, when the liquid volume (α) of the syringe is 100%, the opening rate is set to the minimum value (η)min) When the liquid capacity (α) is 0%, the opening ratio is set to the maximum value (η)max). If the opening rate is fixed, the average value of the pressure wave applied to the cylinder becomes small in the process of reducing the liquid volume from 100% to 0% while the liquid discharge is performed. Accordingly, the average pressure value (P) based on the pressure sensor provided at the rear end of the electronic valve 20avg) The opening rate of the flow control valve 72 can be corrected by the following correction formula, and the opening rate can be applied:
the flow control valve 72 may be separately configured as shown in fig. 2, in which case the flow control valve 72a is disposed on a pipe connecting the electronic valve 20 and the syringe 50, and the area of the pipe supplied to the syringe 50 is increased in inverse proportion to the remaining amount of the liquid in the syringe 50 by the control of the controller 60.
As shown in fig. 3, a plurality of flow control valves 72 may be provided in the constant-volume discharge device 100, and the flow control device 70 may be constituted by a flow control valve 72a and a flow control valve 72b, wherein the flow control valve 72a is provided in a line connecting the electronic valve 20 and the syringe 50, and the flow control valve 72b is provided in a first line connecting the first proportional control valve 30 and the electronic valve 20.
In this case, the flow control valve 72b may be additionally provided with a pulsation stabilizing device 74, the pulsation stabilizing device 74 preventing a pulsation phenomenon (surging) in the pipe, the flow control valve 72a on the upper side is responsible for minutely controlling the flow area, and the flow control valve 72b on the lower side macroscopically controls the flow area, thereby enabling quantitative discharge through a more precise control area. Here, the pulsation stabilizer 74 may be configured as various means for preventing the pressure of the compressed air supplied from the compressed air source 10 from varying due to the opening and closing of various valves, and may be configured in a shape that increases the capacity of the flow control valve 72b at the position where the pulsation stabilizer 74 is provided.
As shown in fig. 4, the flow rate adjustment control device 70 may be configured by a flow rate control valve 72a, a flow rate control valve 72b, and a flow rate control valve 72c, wherein the flow rate control valve 72a is disposed on a pipe connecting the electronic valve 20 and the syringe 50, the flow rate control valve 72b is disposed on a first pipe connecting the first proportional control valve 30 and the electronic valve 20, and the flow rate control valve 72c is disposed on a second pipe connecting the second proportional control valve 40 and the electronic valve 20.
In this case, a pulsation stabilizing device 74 may be added to the flow control valves 72b, 72c, the pulsation stabilizing device 74 preventing a pulsation phenomenon (surging) in the pipe, the action being the same as described above, and then the upper pulsation stabilizing device stabilizes pulsation in the pipe at the time of discharge and the lower pulsation stabilizing device stabilizes pulsation in the pipe at the time of standby.
As described above, the constant-volume discharge device according to the present invention changes the characteristics of the pressure wave transmitted to the nozzle in response to the remaining amount of the solution in the cylinder which is reduced by the discharge, controls the area (open area) of the pipe, and transmits a predetermined pressure wave to the nozzle even if the remaining amount of the solution changes, thereby realizing the constant-volume discharge.
In addition, more than one flow rate regulating tool is set in the pipeline constituting the quantitative discharge device, and the opening area of the flow rate regulating tool is increased in proportion to the gradual increase of the space in the discharge syringe, so that the constant discharge amount can be maintained.
Although the present invention has been described with reference to the above embodiments and the accompanying drawings, the technical idea of the present invention is not limited to the embodiments and the accompanying drawings, and those skilled in the art of the present invention who have conventionally recognized the technical idea of the present invention can make various modifications and variations within the scope of the technical idea of the present invention and the claims.
Claims (8)
1. A quantitative discharge device as a discharge device for discharging a liquid in a cylinder by a gas supplied from a compressed gas source, characterized by comprising flow rate adjusting means for adjusting a flow rate supplied to the cylinder in accordance with a remaining amount of the liquid in the cylinder.
2. The metered dose discharge device of claim 1,
the quantitative discharge device includes:
a source of compressed gas;
an electronic valve connected to the source of compressed gas and determining whether to supply regulated pressure gas to the syringe;
a first proportional control valve disposed in a first discharge pipe that communicates the compressed gas source and the electronic valve;
a second proportional control valve disposed in a second vacuum pipe connecting the compressed gas source and the electronic valve;
a cylinder discharging the liquid filled inside by the gas supply of the electronic valve;
a control unit for controlling the compressed gas source, the electronic valve, the first proportional control valve, and the second proportional control valve;
wherein the flow regulating means is configured as a flow regulating control device arranged in a conduit constituted by the dosing discharge device.
3. The metered dose discharge device of claim 2,
the flow rate adjusting and controlling device includes a flow rate control valve that changes an area of a pipe provided according to control of the control portion.
4. The metered dose discharge device of claim 2,
the flow regulation and control device further comprises a pulsation stabilizing device, and the pulsation stabilizing device prevents the pulsation phenomenon in the arranged pipeline.
5. The metered dose discharge device of claim 3,
the flow control valve is provided in plurality on the constant-volume discharge device.
6. The metered dose discharge device of claim 3,
the flow control valve is disposed on a pipe connecting the electronic valve and the syringe, and the area of the pipe supplied to the syringe is increased by the control of the control unit in inverse proportion to the remaining amount of the liquid in the syringe.
7. The metered dose discharge device of claim 3,
the flow control valve is disposed on a first pipe connecting the first proportional control valve and the electronic valve.
8. The metered dose discharge device of claim 3,
the flow control valve is disposed on a second conduit connecting the second proportional control valve and the electronic valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180140057A KR102032065B1 (en) | 2018-11-14 | 2018-11-14 | The constant amount dispenser device |
| KR10-2018-0140057 | 2018-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111185347A true CN111185347A (en) | 2020-05-22 |
Family
ID=68542085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910982079.5A Pending CN111185347A (en) | 2018-11-14 | 2019-10-16 | Quantitative discharge device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102032065B1 (en) |
| CN (1) | CN111185347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114074913A (en) * | 2020-08-21 | 2022-02-22 | Geo科技有限公司 | Liquid distributor and precise calculation method for residual liquid amount in injector by using same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102362969B1 (en) | 2020-05-07 | 2022-02-18 | (주)우원티씨에스 | Syringe pump for quantitative dispensing, coating solution supply method and syringe pump cleaning method |
| KR102356550B1 (en) * | 2020-06-26 | 2022-01-27 | 주식회사 지오테크놀로지 | Dispenser and method for delivering micro-fixed quantity according to liquid level in syringe |
| KR102514635B1 (en) | 2021-01-25 | 2023-03-24 | 윤여록 | Wine dispenser using nitrogen extrusion |
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| JP3028596B2 (en) * | 1990-11-22 | 2000-04-04 | 松下電器産業株式会社 | Adhesive application method and adhesive application device |
| JP4663894B2 (en) * | 2001-03-27 | 2011-04-06 | 武蔵エンジニアリング株式会社 | Droplet forming method and droplet quantitative discharge apparatus |
| JP4512680B2 (en) * | 2003-03-18 | 2010-07-28 | 兵神装備株式会社 | Material supply system |
| KR100985754B1 (en) | 2008-11-21 | 2010-10-06 | (주)저스틴비디앤엘 | Photo resist dispense monitoring system |
| KR20170140117A (en) | 2016-06-10 | 2017-12-20 | (주)화소 | Quantified vent apparatus |
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- 2018-11-14 KR KR1020180140057A patent/KR102032065B1/en active IP Right Grant
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- 2019-10-16 CN CN201910982079.5A patent/CN111185347A/en active Pending
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| JPS63296863A (en) * | 1987-05-29 | 1988-12-02 | Matsushita Electric Ind Co Ltd | Viscous fluid coating apparatus |
| CN1431134A (en) * | 2002-01-11 | 2003-07-23 | 英业达股份有限公司 | Quantified type device for dripping glue |
| US20060163277A1 (en) * | 2003-10-06 | 2006-07-27 | Nordson Corporation | Compensating pressure controller for fluid dispenser and method |
| CN101817494A (en) * | 2009-01-09 | 2010-09-01 | 诺信公司 | Apparatus and method for pulsed dispensing of liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114074913A (en) * | 2020-08-21 | 2022-02-22 | Geo科技有限公司 | Liquid distributor and precise calculation method for residual liquid amount in injector by using same |
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| Publication number | Publication date |
|---|---|
| KR102032065B1 (en) | 2019-11-08 |
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