JP4933009B2 - Spray application nozzle - Google Patents

Spray application nozzle Download PDF

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Publication number
JP4933009B2
JP4933009B2 JP2001290880A JP2001290880A JP4933009B2 JP 4933009 B2 JP4933009 B2 JP 4933009B2 JP 2001290880 A JP2001290880 A JP 2001290880A JP 2001290880 A JP2001290880 A JP 2001290880A JP 4933009 B2 JP4933009 B2 JP 4933009B2
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JP
Japan
Prior art keywords
resin material
cylindrical
funnel
nozzle body
supply path
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Expired - Fee Related
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JP2001290880A
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Japanese (ja)
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JP2003094483A (en
Inventor
正訓 西野
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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  • Moulding By Coating Moulds (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a spray application nozzle which can form a colored coat uniform in thickness on a molding member when a resin material is supplied at a low pressure. SOLUTION: A resin molding material supply route 2 is formed in a nozzle main body 1. A cylindrical cavity part 6 communicating with the supply route 2, a cylindrical member 7, and a resin material guide part 3 in which a ring- shaped resin channel 8 is formed are provided. A resin material discharge member 5 having a funnel-shaped cavity part 9 communicating with the guide part 3 and an opening part 4 opening in the side of the nozzle main body 1 is provided. A core member 10 which is connected with the cylindrical member 7, is formed in the shape of a truncated cone facing the funnel-shaped cavity part 9, and has channel parts 11 in a truncated cone-shaped surface 10a is provided. The cylindrical cavity part 6 is decentered so that the central axis A1 faces the central axis A2 of the cylindrical member 7, and the channel 8 forms a narrow, small part between the cylindrical member 7 and the resin material supply route 6. The cylindrical member 7 has a tapered surface 7a.

Description

【0001】
【発明の属する技術分野】
本発明は、ウレタン樹脂、ウレア樹脂等の樹脂材料を成形部材に塗布するスプレー塗布ノズルに関するものである。
【0002】
【従来の技術】
従来、前記樹脂材料を成形部材に塗布するスプレー塗布ノズルとして、特公平7−83847号公報記載のもの等が知られている。
【0003】
前記スプレー塗布ノズルは、例えば図3示のように、樹脂材料の供給源に接続されるノズル本体1内に設けられた樹脂材料供給路2と、ノズル本体1の先端部に設けられ樹脂材料供給路2に連通する樹脂材料案内部3と、樹脂材料案内部3を介して供給される前記樹脂材料をノズル本体1の側面に開口する開口部4から吐出する吹き付けピース5とを備えている。
【0004】
前記樹脂材料案内部3は、円筒状空洞部6と、円筒状空洞部6内に配設された円柱状部材7を備え、円筒状空洞部6の側壁と円柱状部材7との間に環状の樹脂材料流路8が形成されている。前記吹き付けピース5は、樹脂材料案内部3に連通する漏斗状空洞部9を備え、漏斗状空洞部9の頂部に開口部4を備えている。吹き付けピース5内には、円錐台形状のコア10が円柱状部材7に連接して配設されていて、コア10は円錐台形状面10aに複数の螺旋状溝部11を備えている。
【0005】
前記スプレー塗布ノズルでは、まず、図示しないポンプ等により加圧された前記樹脂材料が樹脂材料供給路2を介して樹脂材料案内部3に供給される。樹脂材料案内部3に供給された樹脂材料は、円筒状空洞部6の側壁と円柱状部材7との間に形成された環状の樹脂材料流路8に沿って流れることにより、樹脂材料案内部3に充填される。そして、前記樹脂材料は、コア10に形成された螺旋状溝部11を介して漏斗状空洞部9に導入されることにより回転力が付与され、開口部4から成形部材の表面に吐出される。
【0006】
この結果、前記スプレー塗布ノズルによれば、前記樹脂材料により、前記成形部材の表面に被膜を形成することができる。
【0007】
一方、自動車のインストルパネル等の成形部材の表面にウレタン樹脂、ウレア樹脂等の樹脂材料からなる被膜が形成する場合には、前記樹脂材料を高圧に加圧すると、前記スプレー塗布ノズルから大量の前記樹脂材料が吐出されることになり、ダレ等の不良の原因となる。そこで、この場合には、前記スプレー塗布ノズルに供給される前記樹脂材料の加圧をできるだけ低圧として、吐出量を少なくすることが望まれる。
【0008】
しかしながら、前記スプレー塗布ノズルに、前記樹脂材料を低圧で供給すると、前記成形部材表面に形成される被膜の膜厚が不均一になったり、前記樹脂材料による前記被膜の着色が不均一になるという不都合がある。
【0009】
【発明が解決しようとする課題】
本発明は、かかる不都合を解消して、樹脂材料を低圧で供給したときに、成形部材表面に、均一な膜厚と着色とを備える被膜を形成することができるスプレー塗布ノズルを提供することを目的とする。
【0010】
【課題を解決するための手段】
本発明者らは、従来のスプレー塗布ノズルにおいて、樹脂材料を低圧で供給したときに、成形部材表面に形成される被膜の膜厚が不均一になったり、前記樹脂材料による着色が不均一になる理由について、種々検討を行った。この結果、従来のスプレー塗布ノズルでは、前記樹脂材料を低圧で供給すると、円筒状空洞部6の側壁と円柱状部材7との間に形成された環状の樹脂材料流路8に沿って、材料樹脂供給路2に近い位置ほど多量の樹脂材料が漏斗状空洞部9に導入され、材料樹脂供給路2から離れるに従って漏斗状空洞部9に導入される樹脂材料が逓減することを見出した。
【0011】
これは、樹脂材料案内部3では、材料樹脂供給路2から供給された前記樹脂材料に、材料樹脂供給路2に近い側から離れる側に向かって加圧が低くなる圧力勾配が形成される一方、従来のスプレー塗布ノズルでは、図4に示すように、円筒状空洞部6が円柱状部材7の中心軸Aと同軸に設けられていて、樹脂材料流通路8の幅が円柱状部材7の周囲で均一になっているためと考えられる。
【0012】
そこで、本発明のスプレー塗布ノズルは、前記目的を達成するために、ノズル本体と、該ノズル本体内に長さ方向に沿って設けられた樹脂材料供給路と、該ノズル本体の先端部に、長さ方向に対して略垂直に設けられ、該樹脂材料供給路に連通する円筒状空洞部と、該円筒状空洞部内に配設された円柱状部材とを備え、該円筒状空洞部の側壁と該円柱状部材との間に環状の樹脂材料流路が形成されている樹脂材料案内部と、該樹脂材料案内部に連通し、該円筒状空洞部側から該ノズル本体の側面に向けて次第に縮径する漏斗状空洞部と、該漏斗状空洞部の頂部で該ノズル本体の側面に開口する開口部とを備える樹脂材料吐出部材と、該円柱状部材に連接し、該漏斗状空洞部に対向する円錐台形状に設けられ、円錐台形状面に樹脂材料を該開口部に案内する複数の溝部を備え、該円柱状部材と同軸状に設けられたコア部材とからなり、該開口部から吐出される樹脂材料を成形部材に塗布するスプレー塗布ノズルにおいて、前記円筒状空洞部は、中心軸が、前記円柱状部材の中心軸に対し、該樹脂材料流路が該円柱状部材と該樹脂材料供給路との間で狭小部を形成するように偏心されていることを特徴とする。
【0013】
本発明のスプレー塗布ノズルでは、前記円筒状空洞部が、前記円柱状部材の中心軸に対して前記のように偏心されているので、前記樹脂材料流路の幅が前記樹脂材料供給路に近い側ほど狭く、該樹脂材料供給路から離れるほど広く形成される。そこで、前記樹脂材料案内部に充填される樹脂材料の量は前記樹脂材料供給路に近い側ほど少なく、該樹脂材料供給路から離れるほど多くなる。この結果、前記樹脂材料を低圧で供給したときには、前記樹脂材料案内部に充填される樹脂材料の量の勾配により前記圧力勾配が相殺され、該樹脂材料案内部から前記漏斗状空洞部に導入される樹脂材料の量が前記円柱状部材の周囲の各部で均一になる。
【0014】
従って、本発明のスプレー塗布ノズルによれば、前記樹脂材料を低圧で供給したときに、成形部材表面に、均一な膜厚と着色とを備える被膜を形成することができる。
【0015】
また、本発明のスプレー塗布ノズルは、前記円柱状部材が、前記コア部材と反対側の基部から該コア部材に向けて次第に縮径するテーパー面を備えることを特徴とする。前記円柱状部材は、前記テーパー面を備えることにより、前記樹脂材料案内部から前記漏斗状空洞部に向かって、前記樹脂材料を流れやすくすることができる。
【0016】
【発明の実施の形態】
次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明する。図1は本実施形態のスプレー塗布ノズルの説明的断面図であり、図2は図1のII−II線断面図である。
【0017】
本実施形態のスプレー塗布ノズルは、図1示のように、樹脂材料の供給源に接続されるノズル本体1内に設けられた樹脂材料供給路2と、ノズル本体1の先端部に設けられて樹脂材料供給路2に連通する樹脂材料案内部3と、樹脂材料案内部3を介して供給される前記樹脂材料をノズル本体1の側面に開口する開口部4から吐出する吹き付けピース5とを備えている。
【0018】
前記樹脂材料案内部3は、ノズル本体1の長さ方向に対して略垂直に設けられた円筒状空洞部6を備え、円筒状空洞部6は樹脂材料供給路2と連通している。また、樹脂材料案内部3は、円筒状空洞部6内に配設された円柱状部材7を備え、円筒状空洞部6の側壁と円柱状部材7との間に環状の樹脂材料流路8が形成されている。尚、円柱状部材7は、ノズル本体1に側面から螺着されている。
【0019】
前記吹き付けピース5は、円柱状部材7と反対側でノズル本体1に螺着されており、樹脂材料案内部3に連通する漏斗状空洞部9を備えている。漏斗状空洞部9は、円筒状空洞部3側からノズル本体1の側面に向けて、次第に縮径している。そして、前記開口部4は、漏斗状空洞部9の頂部でノズル本体1の側面に開口している。
【0020】
吹き付けピース5内には、円柱状部材7に連接し、漏斗状空洞部9に対向する円錐台形状に設けられたコア10が配設されている。コア10は、漏斗状空洞部9に対向する円錐台形状面に、前記樹脂材料を4開口部に案内する複数の溝部11を備えている。溝部11は、例えば、3条の螺旋状に形成される。
【0021】
ここで、円筒状空洞部6は、図2に示すように、その中心軸A1が、円柱状部材7の中心軸A2に対して、樹脂材料流路8が円柱状部材7と樹脂材料供給路2との間で狭小部8aを形成するように、偏心して配設されている。この結果、樹脂材料流路8の幅は、樹脂材料供給路2に近い側ほど狭く、樹脂材料供給路2から離れるほど広く形成されている。
【0022】
また、円柱状部材7は、図1に示すように、コア10と反対側の基部からコア10に向けて、次第に縮径するテーパー面7aを備えている。
【0023】
次に、本実施形態のスプレー塗布ノズルの作動について説明する。
【0024】
前記スプレー塗布ノズルでは、まず、図示しないポンプ等により加圧されたウレタン樹脂、ウレア樹脂等の樹脂材料が樹脂材料供給路2を介して樹脂材料案内部3に供給されると、該樹脂材料は、円筒状空洞部6の側壁と円柱状部材7との間に形成された環状の樹脂材料流路8に沿って流れることにより、樹脂材料案内部3に充填される。
【0025】
このとき、前記樹脂材料が低圧で供給されると、該樹脂材料には、材料樹脂供給路2に近い側から離れる側に向かって加圧が低くなる圧力勾配が形成される。
【0026】
一方、樹脂材料案内部3では、円筒状空洞部6の中心軸A1が円柱状部材7の中心軸A2に対して前記のように偏心して配設されており、樹脂材料流路8の幅が樹脂材料供給路2に近い側ほど狭く、樹脂材料供給路2から離れるほど広く形成されている。従って、樹脂材料案内部3に充填される前記樹脂材料の量は、樹脂材料供給路2に近いほど少なく、樹脂材料供給路2から離れるほど多くなる勾配が形成される。
【0027】
この結果、樹脂材料案内部3に充填される樹脂材料の量の前記勾配により、前記圧力勾配が相殺され、樹脂材料案内部3からは、円柱状部材7の周囲の各部で均一な量の前記樹脂材料が、円柱状部材7のテーパー面7aに沿ってコア10方向に流動し、コア10の円錐台形状面に形成された螺旋状溝部11を介して漏斗状空洞部9に導入される。そして、前記樹脂材料が、開口部4から成形部材の表面に吐出される。
【0028】
従って、本実施形態のスプレー塗布ノズルによれば、前記樹脂材料を低圧で供給したときに、成形部材表面に、均一な膜厚と着色とを備える被膜を形成することができる。
【図面の簡単な説明】
【図1】本発明のスプレー塗布ノズルの一実施形態の構成を示す説明的断面図。
【図2】図1のII−II線断面図。
【図3】従来のスプレー塗布ノズルの一実施形態の構成を示す説明的断面図。
【図4】図3のIV−IV線断面図。
【符号の説明】
1…ノズル本体、 2…樹脂材料供給路、 3…樹脂材料案内部、 4…開口部、 5…樹脂材料吐出部材、 6…円筒状空洞部、 7…円柱状部材、 8…樹脂材料流路、 9…漏斗状空洞部、 10…コア部材、 11…溝部。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spray application nozzle for applying a resin material such as urethane resin or urea resin to a molded member.
[0002]
[Prior art]
Conventionally, as a spray application nozzle for applying the resin material to a molded member, one described in Japanese Patent Publication No. 7-83847 is known.
[0003]
For example, as shown in FIG. 3, the spray application nozzle includes a resin material supply path 2 provided in a nozzle body 1 connected to a supply source of a resin material, and a resin material supply provided at the tip of the nozzle body 1. A resin material guide part 3 communicating with the path 2 and a spray piece 5 for discharging the resin material supplied through the resin material guide part 3 from an opening 4 opened on a side surface of the nozzle body 1 are provided.
[0004]
The resin material guide 3 includes a cylindrical cavity 6 and a columnar member 7 disposed in the cylindrical cavity 6, and an annular shape is provided between the side wall of the cylindrical cavity 6 and the columnar member 7. The resin material flow path 8 is formed. The spray piece 5 includes a funnel-shaped cavity 9 that communicates with the resin material guide 3, and includes an opening 4 at the top of the funnel-shaped cavity 9. In the spray piece 5, a truncated cone-shaped core 10 is disposed so as to be connected to the cylindrical member 7, and the core 10 includes a plurality of spiral grooves 11 on the truncated cone-shaped surface 10 a.
[0005]
In the spray application nozzle, first, the resin material pressurized by a pump or the like (not shown) is supplied to the resin material guide 3 through the resin material supply path 2. The resin material supplied to the resin material guide 3 flows along the annular resin material flow path 8 formed between the side wall of the cylindrical cavity 6 and the columnar member 7, thereby causing the resin material guide 3 is filled. Then, the resin material is introduced into the funnel-shaped cavity 9 through the spiral groove 11 formed in the core 10, so that a rotational force is applied, and the resin material is discharged from the opening 4 to the surface of the molded member.
[0006]
As a result, according to the spray application nozzle, a film can be formed on the surface of the molded member by the resin material.
[0007]
On the other hand, when a film made of a resin material such as urethane resin or urea resin is formed on the surface of a molded member such as an instrument panel of an automobile, when the resin material is pressurized to a high pressure, a large amount of the spray coating nozzle is used. Resin material is discharged, which causes defects such as sagging. Therefore, in this case, it is desired that the resin material supplied to the spray coating nozzle be pressed as low as possible to reduce the discharge amount.
[0008]
However, when the resin material is supplied to the spray application nozzle at a low pressure, the film thickness of the film formed on the surface of the molded member becomes non-uniform or the color of the film by the resin material becomes non-uniform. There is an inconvenience.
[0009]
[Problems to be solved by the invention]
The present invention eliminates such inconveniences and provides a spray application nozzle capable of forming a film having a uniform film thickness and color on the surface of a molded member when a resin material is supplied at a low pressure. Objective.
[0010]
[Means for Solving the Problems]
In the conventional spray application nozzle, when the resin material is supplied at a low pressure, the film thickness of the coating formed on the surface of the molded member becomes non-uniform, or the coloring by the resin material becomes non-uniform. Various studies were conducted on the reasons. As a result, in the conventional spray application nozzle, when the resin material is supplied at a low pressure, the material flows along the annular resin material flow path 8 formed between the side wall of the cylindrical cavity 6 and the columnar member 7. It has been found that the closer to the resin supply path 2, the more resin material is introduced into the funnel-shaped cavity 9, and the resin material introduced into the funnel-shaped cavity 9 gradually decreases with distance from the material resin supply path 2.
[0011]
This is because, in the resin material guide portion 3, a pressure gradient is formed in the resin material supplied from the material resin supply path 2 so that the pressure decreases toward the side away from the side closer to the material resin supply path 2. In the conventional spray application nozzle, as shown in FIG. 4, the cylindrical cavity 6 is provided coaxially with the central axis A of the columnar member 7, and the width of the resin material flow path 8 is the same as that of the columnar member 7. This is considered to be uniform around.
[0012]
Therefore, in order to achieve the above object, the spray application nozzle of the present invention has a nozzle body, a resin material supply path provided in the nozzle body along the length direction, and a tip of the nozzle body. A cylindrical cavity provided substantially perpendicular to the length direction and communicating with the resin material supply path; and a columnar member disposed in the cylindrical cavity, and a side wall of the cylindrical cavity A resin material guide part in which an annular resin material flow path is formed between the cylindrical member and the cylindrical material member, and communicates with the resin material guide part from the cylindrical cavity side toward the side surface of the nozzle body Resin material discharge member comprising a funnel-shaped cavity portion that gradually decreases in diameter, and an opening that opens to the side surface of the nozzle body at the top of the funnel-shaped cavity portion, and the funnel-shaped cavity portion connected to the columnar member The resin material is provided in the shape of a truncated cone opposite to A plurality of grooves for guiding consists of a core member provided in the circular columnar member coaxially, in a spray coating nozzle for coating the resin material discharged from the opening to the molding member, wherein the cylindrical cavity The center axis is eccentric with respect to the center axis of the columnar member so that the resin material flow path forms a narrow portion between the columnar member and the resin material supply path. Features.
[0013]
In the spray coating nozzle of the present invention, the cylindrical cavity is eccentric as described above with respect to the central axis of the columnar member, and therefore the width of the resin material flow path is close to the resin material supply path. The narrower the side, the wider the distance from the resin material supply path. Therefore, the amount of the resin material filled in the resin material guide portion is smaller on the side closer to the resin material supply path and increases as the distance from the resin material supply path is increased. As a result, when the resin material is supplied at a low pressure, the pressure gradient is offset by the gradient of the amount of the resin material filled in the resin material guide, and is introduced from the resin material guide into the funnel-shaped cavity. The amount of the resin material to be obtained is uniform at each part around the cylindrical member.
[0014]
Therefore, according to the spray application nozzle of the present invention, when the resin material is supplied at a low pressure, a film having a uniform film thickness and coloring can be formed on the surface of the molded member.
[0015]
The spray coating nozzle of the present invention is characterized in that the columnar member has a tapered surface that gradually decreases in diameter from the base on the opposite side to the core member toward the core member. The columnar member can easily flow the resin material from the resin material guiding portion toward the funnel-shaped cavity by providing the tapered surface.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 is an explanatory cross-sectional view of the spray application nozzle of the present embodiment, and FIG. 2 is a cross-sectional view taken along the line II-II of FIG.
[0017]
As shown in FIG. 1, the spray application nozzle of the present embodiment is provided at a resin material supply path 2 provided in a nozzle body 1 connected to a resin material supply source, and at the tip of the nozzle body 1. A resin material guide part 3 communicating with the resin material supply path 2 and a spray piece 5 for discharging the resin material supplied via the resin material guide part 3 from an opening 4 opened on the side surface of the nozzle body 1 are provided. ing.
[0018]
The resin material guide 3 includes a cylindrical cavity 6 provided substantially perpendicular to the length direction of the nozzle body 1, and the cylindrical cavity 6 communicates with the resin material supply path 2. The resin material guide 3 includes a columnar member 7 disposed in the cylindrical cavity 6, and an annular resin material flow path 8 between the side wall of the cylindrical cavity 6 and the columnar member 7. Is formed. The cylindrical member 7 is screwed to the nozzle body 1 from the side surface.
[0019]
The spray piece 5 is screwed to the nozzle body 1 on the side opposite to the columnar member 7 and includes a funnel-shaped cavity 9 communicating with the resin material guide 3. The funnel-shaped cavity 9 is gradually reduced in diameter from the cylindrical cavity 3 side toward the side surface of the nozzle body 1. The opening 4 opens at the side of the nozzle body 1 at the top of the funnel-shaped cavity 9.
[0020]
In the spray piece 5, a core 10 is provided which is connected to the columnar member 7 and has a truncated cone shape facing the funnel-shaped cavity 9. The core 10 includes a plurality of groove portions 11 for guiding the resin material to the four openings on a truncated cone-shaped surface facing the funnel-shaped cavity portion 9. The groove part 11 is formed in, for example, a triple spiral shape.
[0021]
Here, as shown in FIG. 2, the cylindrical hollow portion 6 has a central axis A 1 in which the resin material flow path 8 is connected to the cylindrical member 7 and the resin material with respect to the central axis A 2 of the cylindrical member 7. It is arranged eccentrically so as to form a narrow portion 8a with the supply path 2. As a result, the width of the resin material flow path 8 is narrower toward the side closer to the resin material supply path 2 and wider as it is farther from the resin material supply path 2.
[0022]
As shown in FIG. 1, the cylindrical member 7 includes a tapered surface 7 a that gradually decreases in diameter from the base opposite to the core 10 toward the core 10.
[0023]
Next, the operation of the spray application nozzle of this embodiment will be described.
[0024]
In the spray application nozzle, first, when a resin material such as urethane resin or urea resin pressurized by a pump (not shown) is supplied to the resin material guide 3 via the resin material supply path 2, the resin material is The resin material guide 3 is filled by flowing along an annular resin material flow path 8 formed between the side wall of the cylindrical cavity 6 and the columnar member 7.
[0025]
At this time, when the resin material is supplied at a low pressure, a pressure gradient is formed in the resin material such that the pressure decreases toward the side away from the side close to the material resin supply path 2.
[0026]
On the other hand, in the resin material guiding portion 3, the central axis A 1 of the cylindrical cavity portion 6 is arranged eccentrically with respect to the central axis A 2 of the columnar member 7 as described above, and The width is narrower toward the side closer to the resin material supply path 2 and wider toward the resin material supply path 2. Accordingly, a gradient is formed such that the amount of the resin material filled in the resin material guide 3 is smaller as it is closer to the resin material supply path 2 and increases as the distance from the resin material supply path 2 increases.
[0027]
As a result, the pressure gradient is canceled out by the gradient of the amount of the resin material filled in the resin material guide portion 3, and the resin material guide portion 3 has a uniform amount of the above-mentioned portions around the cylindrical member 7. The resin material flows in the direction of the core 10 along the tapered surface 7 a of the columnar member 7 and is introduced into the funnel-shaped cavity 9 through the spiral groove 11 formed on the truncated cone-shaped surface of the core 10. Then, the resin material is discharged from the opening 4 to the surface of the molded member.
[0028]
Therefore, according to the spray application nozzle of this embodiment, when the resin material is supplied at a low pressure, a film having a uniform film thickness and coloring can be formed on the surface of the molded member.
[Brief description of the drawings]
FIG. 1 is an explanatory cross-sectional view showing the configuration of an embodiment of a spray application nozzle of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is an explanatory cross-sectional view showing the configuration of an embodiment of a conventional spray application nozzle.
4 is a sectional view taken along line IV-IV in FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Nozzle main body, 2 ... Resin material supply path, 3 ... Resin material guide part, 4 ... Opening part, 5 ... Resin material discharge member, 6 ... Cylindrical hollow part, 7 ... Columnar member, 8 ... Resin material flow path 9 ... funnel-shaped cavity, 10 ... core member, 11 ... groove.

Claims (2)

ノズル本体と、該ノズル本体内に長さ方向に沿って設けられた樹脂材料供給路と、該ノズル本体の先端部に、長さ方向に対して略垂直に設けられ、該樹脂材料供給路に連通する円筒状空洞部と、該円筒状空洞部内に配設された円柱状部材とを備え、該円筒状空洞部の側壁と該円柱状部材との間に環状の樹脂材料流路が形成されている樹脂材料案内部と、該樹脂材料案内部に連通し、該円筒状空洞部側から該ノズル本体の側面に向けて次第に縮径する漏斗状空洞部と、該漏斗状空洞部の頂部で該ノズル本体の側面に開口する開口部とを備える樹脂材料吐出部材と、該円柱状部材に連接し、該漏斗状空洞部に対向する円錐台形状に設けられ、円錐台形状面に樹脂材料を該開口部に案内する複数の溝部を備え、該円柱状部材と同軸状に設けられたコア部材とからなり、該開口部から吐出される樹脂材料を成形部材に塗布するスプレー塗布ノズルにおいて、前記円筒状空洞部は、中心軸が、前記円柱状部材の中心軸に対し、該樹脂材料流路が該円柱状部材と該樹脂材料供給路との間で狭小部を形成するように偏心されていることを特徴とするスプレー塗布ノズル。A nozzle body, a resin material supply path provided in the nozzle body along the length direction, and provided at a front end portion of the nozzle body substantially perpendicular to the length direction, to the resin material supply path A cylindrical cavity portion that communicates with the columnar member disposed in the cylindrical cavity portion, and an annular resin material flow path is formed between the side wall of the cylindrical cavity portion and the columnar member. A resin material guide portion, a funnel-like cavity portion that communicates with the resin material guide portion and gradually decreases in diameter from the cylindrical cavity portion side to the side surface of the nozzle body, and at the top of the funnel-like cavity portion A resin material discharge member having an opening opening on a side surface of the nozzle body, a conical shape connected to the columnar member and facing the funnel-shaped cavity, and a resin material on the frustoconical surface comprising a plurality of grooves for guiding the opening, provided in the circular columnar member coaxially co A spray coating nozzle for applying a resin material discharged from the opening to a molded member, wherein the cylindrical cavity has a central axis that is less than the central axis of the columnar member. A spray coating nozzle characterized in that the path is eccentric so as to form a narrow portion between the cylindrical member and the resin material supply path. 前記円柱状部材は、前記コア部材と反対側の基部から該コア部材に向けて次第に縮径するテーパー面を備えることを特徴とする請求項1記載のスプレー塗布ノズル。The spray coating nozzle according to claim 1, wherein the cylindrical member includes a tapered surface that gradually decreases in diameter from a base portion opposite to the core member toward the core member.
JP2001290880A 2001-09-25 2001-09-25 Spray application nozzle Expired - Fee Related JP4933009B2 (en)

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JP6474162B2 (en) * 2016-04-28 2019-02-27 株式会社ニフコ Nozzle device

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US3762652A (en) * 1972-08-21 1973-10-02 Barry Wehmiller Co Nozzle for delivering a conic spray pattern
BE1003015A6 (en) * 1989-03-20 1991-10-22 Recticel Nozzle for spray gun for forming a layer polyurethane on a surface.
JPH0642707A (en) * 1992-07-24 1994-02-18 Ishikawajima Harima Heavy Ind Co Ltd Mixing device of desuperheater

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