WO2013031531A1 - 工具無しで分解組立可能な低吐出量用液体材料噴射バルブ - Google Patents
工具無しで分解組立可能な低吐出量用液体材料噴射バルブ Download PDFInfo
- Publication number
- WO2013031531A1 WO2013031531A1 PCT/JP2012/070653 JP2012070653W WO2013031531A1 WO 2013031531 A1 WO2013031531 A1 WO 2013031531A1 JP 2012070653 W JP2012070653 W JP 2012070653W WO 2013031531 A1 WO2013031531 A1 WO 2013031531A1
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- WIPO (PCT)
- Prior art keywords
- liquid material
- injection valve
- discharge amount
- material injection
- low discharge
- Prior art date
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
- B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/62—Arrangements for supporting spraying apparatus, e.g. suction cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
- B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
- B05B7/2435—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
- B05B7/2464—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device a liquid being fed by mechanical pumping from the container to the nozzle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
Definitions
- liquid materials such as a liquid photoresist agent, a surface protective film and a functional coating agent, in particular, a granular material are contained in an object to be coated such as a semiconductor silicon chip, a glass substrate, various resin substrates, and a metal member.
- the present invention relates to a low discharge amount liquid material injection valve for forming a thin film by atomizing a liquid material (hereinafter referred to as a liquid material containing a filler) extremely finely.
- Filler-filled liquid materials which are not high-viscosity liquid materials, cause sedimentation and aggregation of fillers, so it is not possible to apply thin films by spraying with a diluting solvent or the like to reduce viscosity, or using dispensers and other coating methods. Met.
- these materials are applied in a highly viscous liquid material in order to prevent the filler from settling.
- this high-viscosity material it is impossible to stably atomize with a low discharge amount, so a material with a high-viscosity region of 500 CPS or higher in which the filler does not settle, such as a dispenser or a screen printing method, is mounted 5 mm.
- a method of applying to the entire surface of an LED device having a square size to a 10 mm square size is employed.
- phosphors should be in direct contact with the surface of an LED chip made of a GaN or InGaN semiconductor that is equivalent to a 2mm square size to 3mm square size. It is desirable to apply a thin film directly on the semiconductor chip surface and then evaporate the solvent.
- a discharge valve that applies a low-viscosity coating material in which phosphor powder is mixed with a solvent or a solvent that also contains some insulating material while stirring without stirring or condensing can be considered. It is structurally impossible as a device that can be sprayed while performing. Therefore, there is a method of circulating a low-viscosity liquid as a method for obtaining a stirring effect. However, it is impossible to prepare a circulation circuit near the discharge nozzle and the needle for controlling the spray in terms of structure.
- liquid or melt particles equal to or higher than the level of ultrafine particles formed by ultrasonic atomization or airbrush spraying are formed, and supply adjustment of a desired amount of small or trace amounts of liquid is easily and reliably performed.
- it can be efficiently applied and adhered to the object to be coated, and it can be applied to the object to be coated such as a semiconductor silicon wafer, a glass substrate and various transparent members, a liquid photoresist agent, a surface protective film, a functional coating agent, etc.
- a spraying device for a small amount of liquid that forms a thin film of a liquid or a melt of the same by spray coating Patent Document 1.
- an automatic spray gun that forms a linear pattern in the machine (hereinafter referred to as an automatic gun) is fixedly assembled using several types of clamping screws to maintain confidentiality and mechanical strength. It had been. For this reason, it takes time to remove the fixing screw for cleaning the wetted part of the coating liquid. In addition, wear and tear due to repeated operation of the tightening screw, etc., and loss of parts due to the large number of parts As a result, it was difficult to maintain and cost.
- the present invention has been made in view of the above-described problems of the prior art, and is a low discharge amount liquid material injection valve that can be easily disassembled and assembled without tools and is easy to perform maintenance work such as cleaning and washing.
- the purpose is to provide.
- the present inventor has disassembled and assembled into a spray method called an air brush, which is a special spray method even with air spray, without using a screwdriver or a wrench tool.
- the present invention has been completed by finding that the above-mentioned problems can be solved by using a low-discharge-volume liquid material injection valve capable of achieving the above.
- a low discharge amount liquid material injection valve that can be disassembled and assembled without a tool according to the present invention includes a cylinder part in which a piston body is mounted so as to be movable up and down, and a base end side of the cylinder part And an adjuster portion having a micro-adjustment mechanism for moving the piston body up and down, and a liquid material inflow that is fitted to the tip end side of the cylinder portion and allows liquid material from the liquid material source to flow in.
- a liquid material injection valve body including a needle body that is inserted and has a tip reaching the opening of the discharge nozzle, the adjuster section, and a fluid body. Since the body portion is prevented from coming off the cylinder unit, characterized in that it comprises a and a pressing member for fixing the adjuster portion and fluids body.
- the low discharge amount means a discharge amount of about 0.1 cc to 5 cc per minute.
- the adjuster portion and the fluid body portion have an annular outer periphery, a recess is provided on the annular outer periphery, and the restraining member includes an engaging member that engages with the recess. It is preferable that the liquid material injection valve main body is fitted and supported by the holding member by engaging the attachment member with the recess.
- the holding member includes a base portion, and first and second U-shaped engaging members whose lower end portions are rotatably supported by the base portion, and the first and second U-shapes.
- the liquid material injection valve body is inserted into the gap between the lower ends of the engagement members, and the lower ends of the first and second U-shaped engagement members are engaged with the annular outer peripheral recesses of the fluid body portions.
- the upper end of the first and second U-shaped engaging members is engaged with the annular outer peripheral recess of the adjuster portion, so that the liquid material injection valve body is fitted and supported by the restraining member. Is preferable.
- a liquid material discharge portion is provided in the fluid body portion, the liquid material inflow portion and the liquid material discharge portion are communicated, and the excess liquid material flowing in from the liquid material inflow portion is the liquid material discharge portion.
- the liquid material is circulated and supplied by being discharged from the liquid and returning to the liquid material source.
- the liquid material is a liquid material containing a filler, and is a low discharge amount liquid material injection valve for injecting the filler-containing liquid material
- the needle body has a tapered tip
- the discharge nozzle includes A contact annular sheet having a contact surface corresponding to the inclination of the tip of the needle body is provided at the tip, and the tip of the needle body can project from the tip of the discharge nozzle.
- the discharge amount of the filler-containing liquid material can be adjusted by adjusting.
- Such a configuration is particularly preferably used when the average particle size of the filler size is around 8 to 10 ⁇ m and the maximum particle size is 30 ⁇ m.
- the tip angle of the needle body is preferably 5 ° to 30 °.
- the particle size distribution of the filler can be measured by a dynamic light scattering method using a dynamic light scattering particle size distribution measuring device or the like.
- the liquid material is a liquid material with a filler, and is a liquid material injection valve for low discharge amount for injecting the liquid material with a filler, wherein the needle body has a tapered tip, and the discharge nozzle has the A contact ring-shaped ring body having a contact portion corresponding to the inclination of the tip of the needle body, wherein the tip of the needle body is not allowed to protrude from the tip of the discharge nozzle, and the pulling margin of the needle body is adjusted;
- the discharge amount of the liquid material containing filler can be adjusted.
- This configuration is particularly preferably used when the average particle size of the filler size is around 20 to 30 ⁇ m and the maximum particle size is 80 ⁇ m. In this case, it is preferable that the tip angle of the needle body is 45 ° to 120 °.
- An air cap for restricting the flow path of the compressed air is provided below the opening of the discharge nozzle so that a mist-like air flow is formed when the liquid material is discharged. Is preferred.
- mist-like air flow is generated by an inner wall passage formed on the inner wall surface of the air cap.
- the said inner wall flow path is a groove
- channel was made to converge toward the exit opening part of the said air cap, and the said exit opening part respond
- mist-like air flow may be generated by a peripheral flow path formed around the outlet opening of the air cap.
- the air cap includes an inner cap and an outer cap, and an outer peripheral flow path is formed radially on the outer peripheral surface of the inner cap, and the outer peripheral flow path is converged toward the outlet opening. It may be.
- a liquid photoresist agent, a surface protective film and a functional coating are applied to an object to be coated such as a semiconductor silicon chip, a glass substrate, various resin substrates, and a metal member.
- a thin film can be formed by atomizing a liquid material such as an agent, particularly a filler-containing liquid material containing a particulate substance extremely finely.
- a white LED can be manufactured by applying a YAG phosphor-containing liquid material that easily settles to an LED device mounted with a GaN or InGaN chip while circulating the liquid. , Greatly contribute to the improvement of lighting efficiency, quality improvement and productivity.
- the liquid material injection valve for low discharge amount of the present invention has an advantage that cleaning can be easily disassembled and assembled in a short time without a tool, thereby reducing maintenance other than coating work and improving throughput.
- the low discharge amount liquid material injection valve that can be disassembled and assembled without a tool of the present invention, the low discharge amount liquid material that can be easily disassembled and assembled without a tool and is easy to perform maintenance work such as cleaning and washing. There is a remarkable effect that an injection valve can be provided.
- liquid material injection valve for low discharge amount that can be disassembled and assembled without using a tool of the present invention, the number of parts is reduced and the fixing screws necessary for assembling each part are minimized, and human manual work is required. There is an effect that can be disassembled and assembled with one touch.
- the liquid material injection valve for low discharge amount that can be disassembled and assembled without using a tool of the present invention, it is used for forming a semiconductor paste, a glass substrate and various members, particularly a conductive paste-containing melting agent or LED.
- Insulating liquid material containing phosphor is uniformly and thinly formed by spray coating to form a circular pattern with a diameter of 10 mm or less, especially about 2 mm to 9 mm, or a linear pattern with a width of 10 mm or less, especially about 1 mm to 9 mm. can do.
- FIG. 1 is an exploded perspective view showing an embodiment of a liquid material injection valve for low discharge amount that can be disassembled and assembled without a tool of the present invention.
- FIG. 2 is an exploded assembly explanatory view of a low discharge amount liquid material injection valve that can be disassembled and assembled without a tool shown in FIG. 1.
- FIG. 2 is an exploded assembly explanatory view of a low discharge amount liquid material injection valve that can be disassembled and assembled without a tool shown in FIG. 1.
- FIG. 2 is a cross-sectional view of the low discharge amount liquid material injection valve shown in FIG. It is a block diagram which shows valve
- FIG. 1 It is a top view which shows another embodiment of the air cap used for the liquid material injection valve for low discharge amounts of this invention. It is a top view which shows another embodiment of the air cap used for the liquid material injection valve for low discharge amounts of this invention. It is a top view which shows another embodiment of the air cap used for the liquid material injection valve for low discharge amounts of this invention. It is a top view which shows other embodiment of the air cap used for the liquid material injection valve for low discharge amounts of this invention. It is a perspective view which shows other embodiment of the air cap used for the liquid material injection valve for low discharge amount of this invention, Comprising: An inner side cap is shown. It is a perspective view which shows the state which attached the outer side cap to the inner side cap of the air cap shown in FIG.
- reference numeral 10 denotes an embodiment of a low discharge amount liquid material injection valve that can be disassembled and assembled without a tool of the present invention.
- the low discharge amount liquid material injection valve 10 is fitted to a cylinder portion 14 in which a piston body 12 is mounted so as to be movable up and down, and to the proximal end side of the cylinder portion 14.
- an adjuster portion 16 having a micro-adjustment mechanism for moving the piston body 12 up and down, and a liquid material inflow that is fitted to the tip end side of the cylinder portion 14 and allows liquid material from the liquid material source to flow in.
- a fluid body portion 22 having a portion 18 and an air inflow portion 20 through which compressed air from a compressed air source flows, a discharge nozzle 74 having an opening 77 attached to the fluid body portion 22, and the piston
- a liquid material comprising: a needle body 26 fitted into the axis of the body 12 and having a tip reaching the opening 77 of the discharge nozzle 74
- a configuration including a firing valve main body 28 and a holding member 30 for fixing the adjuster portion 16 and the fluid body portion 22 in order to prevent the adjuster portion 16 and the fluid body portion 22 from being detached from the cylinder portion 14.
- the adjuster portion 16 includes an adjustment screw 34 that is inserted into an adjustment string 32, and an upper body portion 38 that receives the adjustment screw 34 via an O-ring 36. Micro-adjustment is enabled by the adjustment mechanism.
- the upper body portion 38 at the lower end of the adjuster portion 16 has an annular outer periphery 40, and the annular outer periphery 40 is provided with a recess 42.
- Reference numeral 44 denotes an interlock ring for strengthening the assembly.
- the cylinder portion 14 is provided with a needle retainer 46 for holding the needle body 26, a piston body 12 into which a spring 48 is inserted, and an O large ring 50. And a middle body portion 54 that is screwed or fitted to the cylinder body 52 to supply air to the lower portion of the piston body 12 and urge the piston body 12 upward. And have.
- the middle body portion 54 has an opening 53 at the center thereof, and the needle body 26 is inserted into the axial center of the piston body 12 via a needle retainer 46, and the middle body via an O small ring 56. Part 54 is inserted.
- a compressed air inlet joint 58 is attached to the middle body portion 54, and the piston body 12 is urged upward by the compressed air from the compressed air supply source. In this way, the piston body 12 can be moved up and down by adjusting the supply amount of the compressed air.
- the fluid body portion 22 is fitted to the lower end portion of the middle body portion 54 that is the tip side of the cylinder portion 14.
- An inlet joint 60 for connecting a return rod of the liquid material is attached to the side surface of the fluid body portion 22, and the liquid material inflow portion 18 is connected to a liquid via a seal ring 62 and a tightening nut 64.
- a circulation joint 66 is screwed, and a liquid container 70 for accommodating a liquid material to be applied is attached to the liquid circulation joint 66 through an R adapter 68 fitted thereto.
- the fluid body portion 22 is provided with a liquid material discharge portion 92, and the liquid material inflow portion 18 and the liquid material discharge portion 92 are communicated with each other by a flow path 94, so that the liquid material inflow from the liquid material inflow portion 18 The excess material is discharged from the liquid material discharge unit 92 and returned to the liquid material source, whereby the liquid material is circulated and supplied.
- an air joint 72 for compressed air is attached to the air inflow portion 20 provided on the side surface of the fluid body portion 22, and compressed air is supplied from a compressed air supply source.
- a needle body 26 is inserted in the center, a discharge nozzle 74 through which the liquid material is discharged together with air, a needle cover 24 covering the needle body 26, and a flow path of compressed air.
- the air caps 78 for regulation are screwed respectively.
- the liquid material injection valve main body 28 is fitted to and supported by the restraining member 30 by engaging the upper end portion of 84 with the annular outer circumferential concave portion 42 of the adjuster portion 16. Note that the holding member 30 is attached to a desired place by the mounting bolt 90.
- FIGS. 1-10 an assembly example of the above-described low discharge amount liquid material injection valve 10 of the present invention is shown in FIGS.
- the fluid body portion 22 into which the discharge nozzle 74, the needle cover 24, and the air cap 78 are screwed together is fitted and combined with the middle body portion 54, whereby the first U-shaped engaging member 82 and the second U-shape of the holding member 30 are combined.
- the lower end portions of the first U-shaped engaging member 82 and the second U-shaped engaging member 84 are inserted into the gap 86 at the lower end portion of the annular engaging member 84 and the annular outer periphery of the fluid body portion 22. It is engaged with the recess 88 and fixed (FIGS. 3A and 3B).
- the adjuster portion 16 for adjusting the amount of liquid material by moving the piston body 12 up and down is screwed into the cylinder portion 14 and assembled (FIG. 3). (H) to (k)).
- the illustrated fluid body portion 22 is of a circulation type.
- Airbrush is a system that is often used as a small spray hand-held valve for painting plastic model parts and small products.
- the diameter of the opening of the discharge nozzle 74 is 0.5 mm or less, and the needle body 26 used for paint ejection control has a needle shape, and a coating liquid (liquid material) is formed along the needle-shaped needle body 26.
- a coating liquid liquid material
- the discharge amount can be reduced to 1 cc or less per minute, and even if the tip of the discharge nozzle 74 is close to the surface to be coated up to about 10 mm, liquid fine particles of 10 ⁇ m or less can be formed, and the coating efficiency is Since the discharge nozzle 74 is close, it can be applied to the object with a high efficiency of 80% or more.
- the airbrush system for hand-painting operation described above is used for the automatic application nozzle mechanism, and a thin and small circulation circuit is added in front of the discharge nozzle 74 to uniformly distribute, for example, a filler-filled liquid material. Succeeded in spray application.
- a low-viscosity liquid material made by mixing a resin containing a diluting solvent with a viscosity of 50 CPS or less into a volume ratio of about 30%, a circular pattern with a diameter of 10 mm or less without reducing the coating efficiency, It is also possible to form a linear pattern with a width of 10 mm or less.
- the tip of the needle body 26 that serves as a mechanism for controlling the discharge of the liquid material is angled with respect to the discharge nozzle 74 having a diameter of 0.5 mm or less. It has an acute structure of 10 ° or less, and protrudes to the center hole of the needle cover 24 at the outlet hole of the discharge nozzle 74, and when the liquid material is discharged, the opening as the allowance for the needle body 26 is 10 ⁇ m. Air atomization is made with a structure that can be adjusted in units.
- the liquid material In discharging the liquid material, when the liquid material oozes out along the tip of the ultrafine needle body 26, the liquid material is atomized by a negative pressure effect by a compressed air flow of 0.2 MPa or less around the tip, and the hole diameter is 0. . Further atomization pattern area and atomization pattern area are diffused by collision diffusion by a swirl type air flow ejected from a discharge nozzle 74 having a diameter of 5 mm or less and a needle cover 24 having a diameter of 2.0 mm or less with a compression pressure of 0.2 Mpa or less I also made it possible.
- the tip of the needle body 26 is tapered, the tip angle ⁇ 1 is 5 °, and the discharge nozzle 74 has a contact surface corresponding to the tip angle ⁇ 1 of the needle body 26.
- An abutting annular sheet 75 is provided at the tip thereof, the tip of the needle body 26 can be projected from the tip of the discharge nozzle 74, and a filler is contained by adjusting the pulling margin of the needle body 26.
- the discharge amount of the liquid material can be adjusted (FIGS. 5C and 5D).
- Such a configuration is particularly preferably used when the liquid material is a filler-containing liquid material and the filler size is small, especially when the average particle size of the filler size is around 8 to 10 ⁇ m and the maximum particle size is 30 ⁇ m.
- the liquid material injection valve 10 for low discharge amount is stored from a liquid material tank 98 which is a liquid material source containing a liquid material containing filler constantly stirred and moved by an electromagnetic stirrer 96.
- Liquid material supply pipe 102 for supplying a fixed amount of liquid material by a liquid material fixed supply pump 100, and a liquid material return pipe 104 for always returning the liquid material to the liquid material tank 98 is prepared. Regardless of the operation of the injection valve 10, the liquid material is always returned to the liquid material tank 98.
- the liquid material supply pipe 102 is connected to the liquid container 70, and the liquid material return pipe 104 is connected to the liquid material discharge unit 92 via the inlet joint 60.
- the discharge pressure when discharging with the liquid material injection valve 10 for low discharge amount is a pressure obtained by adding the resistance pressure of the liquid material return pipe to the pressure of the liquid material fixed supply pump 100. Furthermore, a compressed air supply pipe 106 for valve operation is connected to the middle body portion 54 of the liquid material injection valve 10 for low discharge amount via an inlet joint 58, and an air joint 72 is connected to the fluid body portion 22. The compressed air supply pipe 108 for atomization is connected, and the compressed air pressure can be adjusted by each air pressure regulator.
- each solenoid valve for example, in the normal atomization solenoid valve, the valve operation solenoid valve starts to operate about 100 ms after the operation starts, and when the discharge is finished, the valve operation solenoid valve is operated first.
- the sequence of terminating and terminating the atomizing solenoid valve after about 50 ms is suitable for the optimal atomization of the liquid material.
- the solenoid valve for valve operation when the solenoid valve for valve operation is operated, the compressed air flows into the cylinder body 52 into which the piston body 12 is inserted from the compressed air supply pipe 106 for valve operation.
- the body 12 is moved toward the adjustment screw 34, the rear end portion of the needle body 26 connected to the piston body 12 is abutted against the adjustment screw 34, and the stroke of the needle body 26 is stopped at a fixed position.
- the LED device 114 is particularly attached to the LED basket chip 116.
- the liquid material not applied enters the liquid material return pipe 104 made of a thin tube having a diameter of about 1.0 mm and returns to the liquid material tank 98.
- the atomized particles not only adhere to the LED chip 116 provided in the LED device 114 but also the end of the spray on the connecting thin wire or the reflector called the reflector, etc.
- the overspray is thinly attached. This film forming range can be adjusted by the atomizing compressed air supply pressure and the atomizing pattern compressed air supply pressure (or flow rate).
- the adjustment of the film formation amount that is, the discharge amount is related to the opening / closing amount of the adjustment screw 34 provided at the rear end portion of the low discharge amount liquid material injection valve 10.
- the discharge amount increases, and when the adjustment screw 34 is closed, the discharge amount decreases.
- the low discharge amount liquid material injection valve 10 shown as an example of illustration is a circulation type that circulates and uses a liquid material.
- the liquid material is a liquid material containing filler. It is particularly suitable when the filler size is small, especially when the average particle size of the filler size is around 8 to 10 ⁇ m and the maximum particle size is 30 ⁇ m.
- the liquid material is a liquid material containing a filler and the filler size is large, particularly when the average particle size of the filler size is about 20 to 30 ⁇ m and the maximum particle size is 80 ⁇ m, the liquid material for low discharge amount is suitably used.
- the injection valve is shown in FIG.
- reference numeral 118 indicates another embodiment of the liquid material injection valve for low discharge amount.
- the needle body 120 has a tapered tip, but the tip angle of the needle body 120 is larger than the needle body 26 of the low discharge amount liquid material injection valve 10. Yes.
- the tip angle ⁇ 2 of the needle body 120 is 45 ° is shown.
- the low discharge amount liquid material injection valve 118 has a contact annular ring body 124 (O-ring in the illustrated example) in which the discharge nozzle 122 having the opening 123 has a contact portion corresponding to the inclination of the tip of the needle body 120.
- the tip of the needle body 120 is not allowed to protrude from the tip of the discharge nozzle 122, and the discharge amount of the liquid material containing filler can be adjusted by adjusting the pulling amount of the needle body 120 ( FIG. 9 (c) and FIG. 9 (d)).
- a needle body 120 is inserted into the center of the lower surface of the fluid body portion 22, a discharge nozzle 122 for discharging the liquid material together with air is attached, and a cover member 126 serving as a needle cover and air cap is screwed. It has been.
- the other components of the low discharge amount liquid material injection valve 118 are the same as those of the low discharge amount liquid material injection valve 10 described above, and thus detailed description thereof is omitted.
- the air cap 76 or the cover member 126 used in the low discharge amount liquid material injection valves 10 and 118 of the present invention will be described.
- the cover member 126 is a needle cover / air cap
- the cover member 126 is included in the air cap referred to in the present specification as long as it functions as an air cap.
- the air cap 128 is provided below the openings of the discharge nozzles 74 and 122 and is an air cap for regulating the flow path of the compressed air. When the liquid material is discharged, the air cap 128 is atomized together with the liquid material. The air flow is formed.
- the air cap 128 has a base portion 130, a convex portion 132 provided in the base portion 130, and an outlet opening portion 134 opened in the convex portion 132.
- the outlet opening 134 is formed in a star shape, and five notches 136 are formed.
- an inner wall channel 138 is formed on the back side.
- the inner wall flow path 138 is a groove corresponding to the notch 136 and is converged toward the outlet opening 134 of the air cap 128.
- the outlet opening 134 has a notch 136 corresponding to the groove.
- five grooves that are inner wall flow paths 138 are formed. For this reason, when the liquid material is discharged, together with the liquid material, atomized air from the compressed air source travels along the inner wall flow path 138 and is discharged from the cut 136 so that the liquid material and the liquid material are discharged. A mist-like air flow is formed. The mist-like air is swirled while being mixed with the liquid material from the outlet opening 134 of the air cap 128.
- FIGS. 10 and 11 an example of a star shape in which five cuts 136 and five inner wall flow paths 138 are formed is shown. However, as long as the cuts and the inner wall flow paths are formed, for example, FIG. It is applicable also in the form as shown in FIG.
- the air cap 140 has a base part 142, a convex part 144 provided in the base part 142, and an outlet opening part 146 opened in the convex part 144.
- the outlet opening 146 has eight cuts 148 formed therein.
- An inner wall flow path is formed corresponding to the cut 148.
- the air cap 150 has a base portion 152, a convex portion 154 provided on the base portion 152, and an outlet opening portion 156 opened in the convex portion 154.
- the outlet opening 156 has five cuts 158.
- the cut 158 has a shape in which rectangular cuts are radially expanded, but such a cut can also be applied.
- An inner wall flow path is formed corresponding to the cut 158. As described above, it is preferable that five or more grooves which are inner wall flow paths are formed, and five or more notches are formed corresponding thereto.
- FIG. 14 shows another embodiment of an air cap used in the low discharge amount liquid material injection valves 10 and 118 of the present invention.
- the air cap 160 has a base portion 162, an outlet opening 164 provided in the base portion 162, and a plurality of surrounding flow paths 166 formed around the outlet opening 164.
- the mist-like air flow is generated by a plurality of peripheral flow paths 166 formed around the outlet opening 164 of the air cap 160. Thereby, it is comprised so that the flow of mist-like air may be formed with the said liquid material.
- the mist-like air is swirled while being mixed with the liquid material from the outlet opening 164 of the air cap 160.
- FIG. 15 and FIG. 16 show another embodiment of an air cap used in the low discharge amount liquid material injection valves 10 and 118 of the present invention.
- the air cap 170 includes an inner cap 172 and an outer cap 184, and an outer peripheral channel 174 is formed radially on the outer peripheral surface of the inner cap 172, and the outer peripheral channel 174 is converged toward the inner outlet opening 176. It has been.
- the inner cap 172 includes a base portion 178, a plurality of radial convex portions 180 provided on the base portion 178, and an outer peripheral flow path 174 formed on the outer peripheral surface thereof.
- the outer cap 184 includes an outer outlet opening 182 in the center thereof. Then, the flow path of the compressed air is regulated by fitting the outer cap 184. Thereby, it is comprised so that the flow of mist-like air may be formed with the said liquid material. Then, the mist-like air is swirled while being mixed with the liquid material from the inner outlet opening 176 and the outer outlet opening 182 of the air cap 170.
- the size of the atomized liquid particles after spraying is further refined by applying static electricity from the rear part of the needle body of the low discharge amount liquid material injection valve.
- parts other than the needle body are manufactured with insulating parts having a volume specific resistance value of 10 13 ⁇ ⁇ cm or more, and from the rear part of the needle body, the DC Connect a high voltage coated wiring to apply a DC high voltage of ⁇ 10000 V, add a polar solvent so that the liquid material not containing a filler is set to a volume resistivity value of 10 6 ⁇ ⁇ cm or less, and conductivity By making the value 10 mS / cm or less, it became possible to apply a low discharge amount with static electricity.
- liquid material is an aqueous material having a volume resistivity of 10 ⁇ ⁇ cm or less
- scattering of fine particles can be suppressed by setting the conductivity to 5 mS / cm or less.
- Example 1 Measurement of flow rate distribution of atomization pattern
- the viscosity of the liquid material was set to 30 CPS.
- a weight ratio 1 dilute solvent (mixed solvent of methyl ethyl ketone and toluene in a weight ratio of 1: 1) was added to a silicone sealant stock solution with a weight ratio of 1 (NV value 100%, viscosity 3000 CPS), and a weight ratio 1 YAG phosphor. was added to obtain a liquid material having a solid content ratio of 30% (about volume NV value 17%) and a viscosity of 30 CPS.
- the specific gravity of the liquid material was 1.3.
- the liquid material constant supply pump 100 is a tube pump with a hydraulic pressure of 0. 01 Mpa, discharge rate was 60 cc / min.
- the distance from the discharge nozzle 74 to the object to be coated was 20 mm.
- the atomizing compressed air pressure was changed from 0.1 Mpa to 0.2 Mpa.
- the discharge time was 100 ms.
- the stroke amount of the needle body 26 by the adjusting screw 34 of the liquid material injection valve for low discharge amount was 1 mm, and the discharge amount was 0.002 mg.
- the liquid material injection valve for low discharge amount was fixed, and the film thickness distribution immediately below was measured. The results are shown in FIG.
- Example 2 Evaluation of coating performance to conductive substrate (1)
- Material to be coated conductive substrate having surface electrical resistance of 10 6 ⁇ ⁇ cm 2
- Liquid material applied solid content is 26.2%
- Aqueous liquid moisture-proof insulation material manufactured by Nitto Shinko
- Liquid material viscosity 10 mPas
- Liquid material conductivity 2 mS / cm
- Emulsion particle size 0.2-6 ⁇ m microspheres
- Moving speed of low-discharge liquid material injection valve 200 mm / second standard
- Application width at one stroke 8 ⁇ 0.5 mm (almost no scattering)
- the distance between the liquid material injection valve for low discharge amount and the substrate surface is 30 mm standard.
- Coating coating pitch 7.5 mm (11)
- Static voltage applied from the rear of the needle body DC-10000 V, short-circuit current value 60 ⁇ A
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Abstract
Description
(実施例1)霧化パターンの流量分布の測定(1) 液体材料の粘度を30CPSに設定した。重量比1のシリコーン封止剤原液(NV値100%で粘度3000CPS)に対し重量比4の希釈溶剤(メチルエチルケトンとトルエンの重量比1:1の混合溶剤)を加え、重量比1のYAG蛍光体を加えて固形分比率30%(約体積NV値17%)で粘度30CPSの液体材料を得た。
(2)液体材料の比重は1.3であった。
(3)液体材料定量供給ポンプ100はチューブポンプで液圧0 .01 Mpa、吐出量は60cc/分とした。
(4)吐出ノズル74から被塗物(200mm角サイズのフラットガラス板)までの距離は20mmとした。
(5)霧化用圧縮空気圧力を0.1Mpa~0.2Mpaにそれぞれ変化させた。
(6) 吐出時間は100msとした。
(7) 低吐出量用液体材料噴射バルブのアジャストスクリュー34によるニードル体26のストローク量を1mmにし、吐出量を0.002mgとした。
(8) 低吐出量用液体材料噴射バルブを固定して、直下の膜厚分布を測定実施した。結果を図8に示す。
(1)被塗布材料:表面電気抵抗値106Ω・cm2にした導電性基板
(2)塗布した液体材料:固形分が26.2%(容積比)の水性エマルジョンである水性液状防湿絶縁剤材料(日東シンコー(株)製)
(3)液体材料粘度:10mPas
(4)液体材料導電率:2mS/cm
(5)エマルジョン粒子サイズ:0.2~6μm微小球
(6)低吐出量用液体材料噴射バルブ吐出量:4.6cc/min
(7)低吐出量用液体材料噴射バルブの移動速度:200mm/秒基準
(8)1ストローク時の塗布幅:8±0.5mm(飛散ほとんどなし)
(9)低吐出量用液体材料噴射バルブと基板面との距離30mm基準
(10)コーティング塗り重ねピッチ:7.5mm
(11)ニードル体の後部から印加した静電圧:DC-10000V、短絡電流値60μA
Claims (14)
- ピストン体を上下動可能に内装してなるシリンダ部と、前記シリンダ部の基端側に嵌着せしめられ、前記ピストン体を上下動せしめるためのマイクロアジャストメント機構を有するアジャスタ部と、前記シリンダ部の先端側に嵌着せしめられ、液体材料源からの液体材料を流入せしめる液体材料流入部と圧縮空気源からの圧縮空気を流入せしめるエアー流入部とを有するフルイドボディ部と、前記フルイドボディ部に連通して取り付けられ、開口部を有する吐出ノズルと、前記ピストン体の軸心に嵌挿せしめられ、先端が前記吐出ノズルの開口部まで到達するニードル体と、を備えた液体材料噴射バルブ本体と、前記アジャスタ部とフルイドボディ部がシリンダ部から外れるのを防止するため、アジャスタ部とフルイドボディ部とを固定するための抑え部材と、を含んでなることを特徴とする工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記アジャスタ部と前記フルイドボディ部とが円環状の外周を有し、前記円環状の外周に凹部を設けるとともに、前記抑え部材が前記凹部に係着する係着部材を有し、前記係着部材を前記凹部に係着せしめることで、前記液体材料噴射バルブ本体が前記抑え部材に嵌着支持されることを特徴とする請求項1記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記抑え部材が、ベース部と、前記ベース部に下端部が回動自在に支持される第一及び第二U字状係着部材と、を有し、前記第一及び第二U字状係着部材の下端部の隙間に前記液体材料噴射バルブ本体を挿入して前記第一及び第二U字状係着部材の下端部を前記フルイドボディ部の円環状の外周の凹部に係着し、前記第一及び第二U字状係着部材の上端部を前記アジャスタ部の円環状の外周の凹部に係着せしめることにより、前記液体材料噴射バルブ本体を抑え部材に嵌着支持せしめるようにしたことを特徴とする請求項2記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記フルイドボディ部に液体材料排出部を設け、前記液体材料流入部と前記液体材料排出部とを連通せしめ、前記液体材料流入部から流入した液体材料の余剰分が前記液体材料排出部から排出せしめられ、前記液体材料源へと戻すことで、前記液体材料が循環供給されるようにしてなることを特徴とする請求項1~3いずれか1項記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記液体材料が、フィラー入り液体材料であり、前記フィラー入り液体材料を噴射するための低吐出量用液体材料噴射バルブであって、前記ニードル体が先端先細状とされ、前記吐出ノズルが前記ニードル体の先端の傾斜に対応する当接面を有する当接環状シート体をその先端に備え、前記ニードル体の先端が前記吐出ノズル先端から突出可能とされてなり、前記ニードル体の引き代を調節することにより、前記フィラー入り液体材料の吐出量を調整可能としてなることを特徴とする請求項1~4いずれか1項記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記ニードル体の先端角度が5°~30°であることを特徴とする請求項5記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記液体材料が、フィラー入り液体材料であり、前記フィラー入り液体材料を噴射するための低吐出量用液体材料噴射バルブであって、前記ニードル体が先端先細状とされ、前記吐出ノズルが、前記ニードル体の先端の傾斜に対応する当接部を有する当接リング体を備え、前記ニードル体の先端が前記吐出ノズル先端から突出不能とされてなり、前記ニードル体の引き代を調節することにより、前記フィラー入り液体材料の吐出量を調整可能としてなることを特徴とする請求項1~4いずれか1項記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記ニードル体の先端角度が45°~120°であることを特徴とする請求項7記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記吐出ノズルの開口部の下方に、出口開口部を有し、圧縮空気の流路を規制するためのエアーキャップが設けられ、前記液体材料が吐出される際に霧状のエアーの流れが形成されてなることを特徴とする請求項1~8いずれか1項記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記霧状のエアーの流れは、前記エアーキャップの内壁面に形成された内壁流路によって発生せしめられることを特徴とする請求項9記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記内壁流路が、5つ以上形成された溝であり、前記溝が、前記エアーキャップの出口開口部に向かって集束せしめられてなり、前記出口開口部には、前記溝に対応した切り込みが形成されてなることを特徴とする請求項10記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記霧状のエアーの流れは、前記エアーキャップの出口開口部の周囲に形成された周囲流路によって発生せしめられることを特徴とする請求項9記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記エアーキャップが、内側キャップと外側キャップとを備え、前記内側キャップの外周面に外周流路が放射状に形成され、前記外周流路が前記出口開口部に向かって集束せしめられてなることを特徴とする請求項9記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
- 前記霧状のエアーが旋回しながら前記エアーキャップの出口開口部からの液体材料と混ざり合って噴出せしめられることを特徴とする請求項1~13いずれか1項記載の工具無しで分解組立可能な低吐出量用液体材料噴射バルブ。
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KR1020147000766A KR101751941B1 (ko) | 2011-09-02 | 2012-08-14 | 공구없이 분해조립가능한 저토출량용 액체재료 분사밸브 |
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US10189267B2 (en) | 2016-12-28 | 2019-01-29 | Seiko Epson Corporation | Liquid ejecting apparatus, liquid ejecting method, and computer program |
CN110038746A (zh) * | 2019-04-28 | 2019-07-23 | 宁波市奉化弘博自动化科技有限公司 | 一种高精度针雾阀 |
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KR101588017B1 (ko) | 2015-08-31 | 2016-01-25 | 이구환 | 고압력 분사용 디스펜서노즐 |
TWI642382B (zh) * | 2017-12-18 | 2018-12-01 | 群英企業股份有限公司 | Nozzle fixing unit |
CN110259750A (zh) * | 2019-07-15 | 2019-09-20 | 上海善佳机械设备有限公司 | 一种用于液体胶水的定量气体供给装置 |
TWI715369B (zh) * | 2019-12-24 | 2021-01-01 | 萬潤科技股份有限公司 | 吸液組件、液材承接方法及裝置 |
CN111889311A (zh) * | 2020-02-13 | 2020-11-06 | 苏州特瑞特机器人有限公司 | 一种微量气动喷雾阀 |
BR112022016747A2 (pt) * | 2020-03-11 | 2022-12-20 | Musashi Eng Inc | Método e aparelho de formação de película líquida plana |
KR102419859B1 (ko) * | 2020-12-21 | 2022-07-12 | 주식회사 프로텍 | 점성 용액 에어로졸 분사 장치 |
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- 2012-08-14 WO PCT/JP2012/070653 patent/WO2013031531A1/ja active Application Filing
- 2012-08-14 JP JP2013531203A patent/JP5661186B2/ja active Active
- 2012-08-14 CN CN201280039365.4A patent/CN103857474B/zh not_active Expired - Fee Related
- 2012-08-14 KR KR1020147000766A patent/KR101751941B1/ko active IP Right Grant
- 2012-08-30 TW TW101131526A patent/TWI526251B/zh active
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JP2001321701A (ja) * | 2000-03-08 | 2001-11-20 | Dyflex Corp | スプレーガン |
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JP2004243318A (ja) * | 2003-02-13 | 2004-09-02 | Illinois Tool Works Inc <Itw> | ガンに取りつけた自動空気式マニホールド |
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US10189267B2 (en) | 2016-12-28 | 2019-01-29 | Seiko Epson Corporation | Liquid ejecting apparatus, liquid ejecting method, and computer program |
CN110038746A (zh) * | 2019-04-28 | 2019-07-23 | 宁波市奉化弘博自动化科技有限公司 | 一种高精度针雾阀 |
Also Published As
Publication number | Publication date |
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TWI526251B (zh) | 2016-03-21 |
JP5661186B2 (ja) | 2015-01-28 |
KR101751941B1 (ko) | 2017-06-28 |
CN103857474A (zh) | 2014-06-11 |
TW201330933A (zh) | 2013-08-01 |
CN103857474B (zh) | 2016-04-13 |
JPWO2013031531A1 (ja) | 2015-03-23 |
KR20140060275A (ko) | 2014-05-19 |
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