WO2015015837A1 - ノズル装置 - Google Patents
ノズル装置 Download PDFInfo
- Publication number
- WO2015015837A1 WO2015015837A1 PCT/JP2014/059297 JP2014059297W WO2015015837A1 WO 2015015837 A1 WO2015015837 A1 WO 2015015837A1 JP 2014059297 W JP2014059297 W JP 2014059297W WO 2015015837 A1 WO2015015837 A1 WO 2015015837A1
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- WIPO (PCT)
- Prior art keywords
- nozzle
- liquid
- flux
- passage
- port
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3489—Composition of fluxes; Methods of application thereof; Other methods of activating the contact surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/082—Flux dispensers; Apparatus for applying flux
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
- H05K2203/0736—Methods for applying liquids, e.g. spraying
Definitions
- the present invention relates to a nozzle device.
- the spray-type flux coating apparatus described in Patent Document 1 includes a hollow cylinder that surrounds a nozzle that injects a flux liquid and extends above the nozzle.
- the diffusion range of the flux liquid can be narrowed by bringing the cylindrical body close to the printed circuit board. Thereby, for example, flux application to a local region in which a plurality of through holes are arranged becomes possible.
- the diffusion of the flux liquid itself is inevitable, so it is considered that the flux liquid may enter obliquely with respect to the through hole. That is, it is desirable that the flux liquid be ejected in a state where diffusion is suppressed as much as possible.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a nozzle device that can suppress diffusion at the time of liquid injection as much as possible.
- one aspect of the present invention is a nozzle device, An ejection port for ejecting the liquid supplied from the liquid supply device; A cylindrical nozzle body having therein a passage for guiding the liquid to the ejection port; With The nozzle body is formed with an intake port communicating with the outside of the nozzle body and the passage, When the liquid is guided through the passage to the injection port, outside air flows into the passage through the intake port, and an air flow toward the injection port is generated along the inner wall of the passage.
- the injection can be executed while suppressing the diffusion of the liquid as much as possible.
- the liquid supply device may include a connecting portion that allows the nozzle body to be detachably attached to a nozzle portion that ejects liquid.
- the connecting portion may be a cylindrical body having a hollow portion surrounding a part of the nozzle body.
- the connection portion is formed with an outside air communication port communicating with the outside of the connection portion and the hollow portion and communicating with the intake port.
- the inflow of outside air to the passage through the intake port is not hindered while protecting the nozzle portion and the nozzle body.
- the intake port may be disposed on the side opposite to the liquid ejecting direction with respect to the tip of the nozzle portion.
- the nozzle main body may have a peripheral wall that divides the passage at the base end.
- a notch is formed in a part of the peripheral wall.
- the inflow of outside air to the passage through the intake port is not hindered while ensuring the positioning of the nozzle portion with respect to the passage.
- FIG. 1 is an explanatory view showing a spray device including a nozzle device according to the first embodiment of the present invention.
- FIG. 2 is an enlarged view of the nozzle device of FIG.
- FIG. 3A is a diagram illustrating a state in which a flux liquid is ejected using the nozzle device of FIG. 1.
- FIG. 3B is a diagram illustrating a state in which the flux liquid is ejected using the nozzle device according to the comparative example.
- FIG. 4 is a diagram illustrating a nozzle device according to a first modification.
- FIG. 5 is a diagram illustrating a nozzle device according to a second modification.
- FIG. 6 is a view showing a nozzle device according to the second embodiment of the present invention.
- the flux spray device 100 includes a nozzle device 10, a base 110, and a moving device 30.
- the nozzle device 10 is connected to a flux liquid supply source (not shown).
- the nozzle device 10 is mounted on the base 110.
- the moving device 30 moves the nozzle device 10 together with the base 110.
- the nozzle device 10 is mounted on the base 110 so that the flux liquid is jetted upward.
- the base 110 is disposed below the transport device 300 that transports the printed circuit board 200.
- the moving device 30 is connected to the base 110. When the moving device 30 moves the base 110, the nozzle device 10 can freely move on the horizontal plane. That is, the nozzle device 10 is movable in the XY directions in FIG.
- the printed circuit board 200 provided with a plurality of mounting components 210 on the surface is supported at both ends by the conveying device 300 and is conveyed in the direction of arrow F.
- the conveying device 300 stops conveying the printed circuit board 200 at a predetermined flux application position, and the flux application operation by the nozzle device 10 is performed.
- the flux spray device 100 includes a control unit (not shown).
- the driving timing of the moving device 30 and the spray timing of the flux liquid are programmed in advance. Therefore, the flux can be applied to a desired region provided on the lower surface of the printed board 200.
- the printed circuit board 200 is sent to the next process, and the mounting component 210 is soldered to the portion where the flux is applied.
- the flux liquid (an example of a liquid) ejected by the nozzle device 10 is supplied from the first nozzle unit 1 as a liquid supply device.
- the 1st nozzle part 1 is provided with the 1st injection port 11 which is an injection port which injects a flux liquid.
- a first injection port 11 is formed at the tip of the first nozzle portion 1.
- the first injection port 11 is a first injection port for primary injection of flux liquid supplied from a flux liquid supply source (not shown).
- the flux liquid primarily ejected from the first nozzle unit 1 is secondarily ejected by the nozzle device 10 toward the flux application target.
- the nozzle device 10 includes a second nozzle portion 2.
- the second nozzle unit 2 includes a nozzle body 21 and a second injection port 22.
- the nozzle body 21 guides the flux liquid to the second injection port 22.
- the second injection port 22 secondary-injects the flux liquid toward the flux application target.
- the nozzle body 21 is formed in a cylindrical shape having a peripheral wall that partitions the parallel flow forming passage 4 (an example of a passage).
- the parallel flow forming passage 4 communicates the base end opening 20 and the second injection port 22.
- the proximal end opening 20 opens at the end of the nozzle body 21 on the side facing the first nozzle 1.
- the proximal end opening 20 surrounds the first injection port 11 of the first nozzle unit 1.
- the diameter of the base end opening 20 is smaller than the outer diameter of the first nozzle portion 1 and larger than the diameter of the first injection port 11.
- the diameter of the proximal end opening 20 is 6 mm, for example.
- the second nozzle part 2 is attached so that the base end opening 20 abuts on the first nozzle part 1.
- the proximal end opening 20 abuts on the distal end portion of the first nozzle portion 1 having a tapered shape.
- the first injection port 11 is arranged inside the nozzle body 21.
- the base end opening 20 of the second nozzle part 2 and the second injection port 22 have a circular cross section with the same diameter.
- the inner wall of the parallel flow forming passage 4 extends in parallel with the axis of the nozzle device 10.
- the outer peripheral surface of the tip of the nozzle body 21 is an inclined surface that is continuous with the second injection port 22 in order to make it easier to cut off the dripping of the flux injected from the second injection port 22. Due to this inclined surface, the diameter of the tip of the nozzle body 21 becomes smaller as it approaches the first injection port 22.
- the second nozzle unit 2 includes an intake port 23.
- the air inlet 23 is formed at the peripheral edge of the base end opening 20. More specifically, the air inlet 23 is formed by cutting out a part of the peripheral wall of the nozzle body 21 that defines the inlet portion of the parallel flow forming passage 4 including the base end opening 20.
- the air inlet 23 is formed by a plurality of (for example, four) notches arranged at equal intervals along the circumferential direction of the base end opening 20. One end of each notch is open. The size of each notch is, for example, a width of 3 mm and a height of 5 mm. Note that the shape of the air inlet 23 is not limited to this, and may be, for example, a round hole formed above the base end opening 20. Even if the proximal end opening 20 is in contact with the first nozzle portion 1, the inside and the outside of the nozzle body 21 are communicated with each other through the air inlet 23.
- the intake port 23 is formed to draw outside air into the nozzle body 21.
- the outside air flows into the parallel flow formation passage 4 through the intake port 23.
- an air flow is generated in the direction in which the flux liquid is guided along the inner wall of the nozzle body 21 (the direction toward the injection port 22).
- the outside air sucked from the intake port 23 forms a parallel air flow along the inner wall of the parallel flow forming passage 4.
- path 4 from the 1st injection port 11 of the 1st nozzle part 1 by this parallel airflow is injected from the 2nd injection port 22 as a parallel flow.
- the number of intake ports 23, the opening shape, the opening area, and the like can be determined as appropriate according to applications and specifications.
- the nozzle device 10 is provided as a separate body from the first nozzle unit 1 that functions as a liquid supply device connected to a flux liquid supply source. Therefore, the second nozzle part 2 is configured in a cap shape and is detachable from the first nozzle part 1.
- the second nozzle portion 2 includes a connecting portion 24.
- the connecting portion 24 has a cylindrical shape having a hollow portion surrounding a part of the nozzle body 21.
- the connecting part 24 comes into contact with the outer periphery of the first nozzle part 1. That is, the connecting portion 24 has an inner diameter that can be fitted to the outer peripheral surface of the first nozzle portion 1.
- the connecting portion 24 is fixed to the first nozzle portion 1 by a plurality of fixing screws 3.
- the plurality of fixing screws 3 are arranged at regular intervals in the circumferential direction of the connecting portion 24.
- the second nozzle part 2 is fixed to the first nozzle part 1 by a plurality of fixing screws 3 in a state where the connecting part 24 is fitted to the side surface of the first nozzle part 1.
- the second nozzle part 2 is fixed to the first nozzle part 1 by three fixing screws 3 arranged at equal intervals in the circumferential direction of the connecting part 24.
- the number of fixed screws 3 can be set as appropriate.
- the second nozzle unit 2 includes an outside air communication port 25.
- the outside air communication port 25 is formed to communicate the hollow portion of the connecting portion 24 with the outside of the connecting portion 24. Thereby, the outside air communication port 25 communicates with the intake port 23.
- the opening area, opening shape, and the like of the outside air communication port 25 can be set as appropriate, it is preferably formed below the intake port 23 provided in the nozzle body 21.
- two outside air communication ports 25 are formed so as to face each other slightly above a screw hole (not shown) for inserting the fixed screw 3.
- the outside air is connected to the intake port 23 formed in the nozzle body 21 through the outside air communication port 25. Can be introduced.
- the second nozzle part 2 includes a collar part 26.
- the flange portion 26 has an outer diameter that is approximately twice the outer diameter of the connecting portion 24.
- the collar portion 26 has a surface extending perpendicularly to the axis of the second nozzle portion 2, that is, a horizontal surface.
- the flux that has been sprayed upward from the second ejection port 22 and then fell on the printed circuit board 200 is received by the horizontal plane.
- the received fluxes can be removed together after solidifying at an appropriate thickness on the flange 26. Accordingly, it is possible to prevent the periphery of the nozzle device 10 from being contaminated with the flux liquid.
- the surface of the buttock 26 is given a gradient, and the received flux drips downward.
- the flux is actually viscous, it does not flow smoothly even if the gradient is applied to the flange 26, and may solidify with a halfway thickness. In this case, the cleaning efficiency is impaired.
- the collar portion 26 is dared to be a horizontal plane.
- a slight gradient is allowed, and it may be substantially horizontal.
- the upper end of the connecting portion 24 is integrated with the flange portion 26.
- the dimensions and the like of the connecting portion 24 are appropriately set according to the size and shape of the first nozzle portion 1. Specifically, when the connecting portion 24 is fitted to the first nozzle portion 1, the side farther from the second injection port 22 than the first injection port 11 (an example of the tip of the nozzle portion) (that is, the first injection).
- the peripheral wall of the nozzle main body 21 located on the opposite side of the flux liquid injection direction with respect to the mouth 11 is set to abut on the tip of the first nozzle part 1 (tapered so as to be tapered). Is made.
- the first injection port 11 is arranged in the parallel flow forming passage 4, and the notch formed in the peripheral wall defines the vent port 23 together with the tapered portion of the first nozzle unit 1. According to such a configuration, inflow of outside air to the parallel flow forming passage 4 through the intake port 23 is not hindered while ensuring positioning of the first nozzle portion 1 with respect to the parallel flow forming passage 4.
- FIG. 3A shows a state in which the flux liquid is sprayed by the nozzle device 10 according to the present embodiment.
- FIG. 3B shows a state in which the flux liquid is ejected by the nozzle device according to the comparative example.
- a mounted product 220 that should avoid adhesion of flux is attached to the flux application surface of the printed circuit board 200.
- the through holes 201, 202, and 203 are formed in a narrow region between the mounted products 220 and the flanges 220.
- the flux liquid enters the left and right through holes 201, 203 obliquely.
- the flux liquid may not be sufficiently applied to the inner walls of the left and right through-holes 201 and 203, particularly the inner walls located inside the through-hole row. That is, there is a risk of causing poor flux application and consequently poor soldering.
- the flux liquid is ejected using the nozzle device 10 according to the present embodiment
- the flux liquid is ejected from the second ejection port 22 as a parallel flow, as indicated by an arrow f1 in FIG. 3A.
- the reason why such a parallel flow is obtained will be described below.
- outside air is drawn into the parallel flow forming passage 4 of the nozzle main body 21 from the air inlet 23, and a parallel air flow along the inner wall is generated as indicated by an arrow A.
- the intake port 23 is formed on the side farther from the second injection port 22 than the first injection port 11 (that is, on the opposite side of the flux liquid injection direction with respect to the first injection port 11).
- the outside air can be efficiently introduced into the parallel flow forming passage 4 by using the generated negative pressure.
- the generated parallel airflow is ejected from the second ejection port 22 while forming an air wall as if it were an air curtain.
- the application width of the flux liquid can be suppressed, even in a narrow region formed between the mounting products 220, the flux can be reliably applied to the regions while avoiding adhesion to the mounting product 220. it can.
- the flux liquid sprayed in parallel flow in such a narrow region enters straightly into each of the three through holes 201 to 203, the flux liquid is surely distributed evenly to all the through holes and to the entire inner wall. Liquid can be applied.
- the flux spray device 100 including the nozzle device 10 according to the present embodiment since the flux liquid is injected as a parallel flow, the flux is used without masking even in a narrow region. Can be applied.
- the flux liquid sprayed from the first nozzle unit 1 is accompanied by diffusion, diffusion is possible by attaching the nozzle device 10 to the first nozzle unit 1 via the connecting unit 24. It is possible to spray the flux liquid suppressed to the printed circuit board 200.
- the flux liquid sprayed as a parallel flow enters straight into the plurality of through holes 201 to 203 arranged in such a narrow region. Therefore, a uniform and sufficient amount of flux can be applied to the inner walls of the through holes 201 to 203.
- FIG. 4 shows a nozzle device 10A according to a first modification.
- symbol is provided to the substantially same component as the nozzle apparatus 10 shown in FIG. 2, and the description which becomes repeated is abbreviate
- the nozzle device 10A according to the first modified example is configured to eject the sucked outside air spirally along the inner wall of the parallel flow forming passage 4 as indicated by an arrow A1.
- the shape of the air inlet 23 and the angle of the cut surface of the air inlet 23 with respect to the nozzle body 21 are appropriately determined in order to form the jet airflow spirally.
- FIG. 5 shows a nozzle device 10B according to a second modification.
- the peripheral edge portion of the flange portion 26 extends downward to a position that covers the outside air communication port 25.
- Such a configuration can more reliably prevent the falling flux from entering the outside air communication port 25.
- FIG. 6 shows a nozzle device 50 according to the second embodiment of the present invention. Note that the same reference numerals are given to the same components as those of the nozzle device 10 according to the first embodiment, and repeated descriptions are omitted.
- the nozzle device 50 can be applied to the flux spray device 100 shown in FIG. That is, the nozzle device 50 can be mounted on the base 110 of the flux spray device 100 in place of the nozzle device 10 described above, and the flux liquid can be applied.
- the nozzle device 50 according to the second embodiment is different from the nozzle device 10 according to the above-described first embodiment in the following points.
- the nozzle device 10 according to the first embodiment is configured separately from the first nozzle unit 1 serving as a liquid supply device.
- the first nozzle portion 1 and the second nozzle portion 2 are integrated to form a cylindrical nozzle body 210.
- the connecting part 24 and the fixing screw 3 are not particularly required.
- first nozzle part 1 and the second nozzle part 2 are not particularly limited.
- first nozzle portion 1 and the second nozzle portion 2 may be screwed together or may be integrally joined by welding or the like.
- the nozzle device 50 includes an intake port 230.
- the intake port 230 is formed on the outer peripheral surface of the nozzle device 50. That is, in the nozzle device 50 according to the second embodiment, the outside air communication port 25 provided in the nozzle device 10 according to the previous embodiment is not necessary.
- the intake port 230 is formed to draw outside air into the nozzle body 210.
- the outside air flows into the parallel flow formation passage 4 through the intake port 230. Thereby, an air flow can be generated in the direction in which the flux liquid is guided along the inner wall of the parallel flow forming passage 4.
- the flux liquid is injected as a parallel flow from the second injection port 22 as indicated by the arrow f1.
- the flux liquid can be reliably applied to the inner walls of the plurality of arranged through holes 201 to 203, and the quality of soldering performed in the subsequent process can be maintained in a good state.
- the nozzle devices 10 and 50 according to the present embodiment perform surface treatment such as fluorine processing.
- surface treatment such as fluorine processing.
- the overall shape and dimensions of the nozzle devices 10 and 50 according to the present embodiment can be designed as appropriate.
- the flux liquid is exemplified as an example of the liquid ejected by the nozzle device 10.
- other examples of the liquid ejected by the nozzle device 10 include paint such as paint.
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- Microelectronics & Electronic Packaging (AREA)
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- Electric Connection Of Electric Components To Printed Circuits (AREA)
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Abstract
Description
液体供給装置から供給される液体を噴射する噴射口と、
前記液体を前記噴射口に導く通路を内部に有する筒状のノズル本体と、
を備えており、
前記ノズル本体には、前記ノズル本体の外部と前記通路を連通する吸気口が形成されており、
前記液体が前記通路内を前記噴射口に導かれると、前記吸気口を通じて前記通路に外気が流入し、前記通路の内壁に沿って、前記噴射口に向かう空気流が発生する。
以下、添付の図面を参照して、第1の実施形態に係るノズル装置について具体的に説明する。なお、以下の説明においては、フラックススプレー装置が当該ノズル装置を備えている例を示す。そして、当該フラックススプレー装置を用いて、プリント基板に設けられたスルーホールにフラックス液を塗布する場合を例にとって説明する。しかし、以下の実施形態によってこの発明が限定されるものではない。
図4は第1の変形例に係るノズル装置10Aを示している。なお、図2に示したノズル装置10と実質的に同じ構成要素には同じ符号を付与し、繰り返しとなる説明は省略する。以降の各変形例についても同様である。
図5は、第2の変形例に係るノズル装置10Bを示している。第2の変形例に係るノズル装置10Bでは、鍔部26の周縁部が、外気連通口25を覆う位置まで下方に延びている。
図6は、本発明の第2の実施形態に係るノズル装置50を示している。なお、第1の実施形態に係るノズル装置10と同様な構成には、同一の参照符合を付与し、繰り返しとなる説明を省略する。
Claims (6)
- 液体供給装置から供給される液体を噴射する噴射口と、
前記液体を前記噴射口に導く通路を内部に有する筒状のノズル本体と、
を備えており、
前記ノズル本体には、前記ノズル本体の外部と前記通路を連通する吸気口が形成されており、
前記液体が前記通路内を前記噴射口に導かれると、前記吸気口を通じて前記通路に外気が流入し、前記通路の内壁に沿って前記噴射口へ向かう空気流が発生する、ノズル装置。 - 前記噴射口よりも下方に、前記ノズル本体の軸心に対して垂直方向に延びる面を有する鍔部を備えている、請求項1に記載のノズル装置。
- 前記液体供給装置が液体を噴射するノズル部に対して前記ノズル本体を着脱自在に取り付け可能とする連結部を備えている、請求項1または2に記載のノズル装置。
- 前記連結部は、前記ノズル本体の一部を包囲する中空部を有する筒状体であり、
前記連結部には、前記連結部の外部と前記中空部を連通するとともに、前記吸気口と連通する外気連通口が形成されている、請求項3に記載のノズル装置。 - 前記連結部が前記ノズル部に取り付けられたとき、前記吸気口は、前記ノズル部の先端を基準にして液体の噴射方向とは逆側に配置される、請求項3または4に記載のノズル装置。
- 前記ノズル本体は、前記通路を区画する周壁を基端部に有しており、
前記周壁の一部に切り欠きが形成されており、
前記連結部が前記ノズル部に取り付けられたとき、前記ノズル部の外周面に形成されたテーパ部に前記周壁が当接することにより、前記ノズル部の先端が前記通路内に配置されるとともに、前記切り欠きが前記テーパ部とともに前記吸気口を区画する、請求項5に記載のノズル装置。
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JP2019209335A (ja) * | 2018-05-31 | 2019-12-12 | 株式会社デンソーテン | 塗布装置および塗布方法 |
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JP5910787B1 (ja) * | 2015-10-22 | 2016-04-27 | 千住金属工業株式会社 | フラックス回収装置 |
JP2017225947A (ja) * | 2016-06-23 | 2017-12-28 | 株式会社デンソーテン | スプレー装置及びスプレー装置を用いた霧状体の噴射方法 |
JP7340388B2 (ja) * | 2019-08-21 | 2023-09-07 | 株式会社デンソーテン | はんだ付け装置 |
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- 2014-03-28 CN CN201480043013.5A patent/CN105432155B/zh active Active
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JP2006263562A (ja) * | 2005-03-23 | 2006-10-05 | Ricoh Elemex Corp | 液体吐出用ノズル及びそれを用いたフラックス塗布装置 |
JP2007083220A (ja) * | 2005-08-24 | 2007-04-05 | Takuma Co Ltd | 二流体噴射ノズルおよびオイルバーナ |
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JP2019209335A (ja) * | 2018-05-31 | 2019-12-12 | 株式会社デンソーテン | 塗布装置および塗布方法 |
JP7218098B2 (ja) | 2018-05-31 | 2023-02-06 | 株式会社デンソーテン | 塗布装置および塗布方法 |
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JP2015032641A (ja) | 2015-02-16 |
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CN105432155B (zh) | 2018-09-25 |
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