JPH05329Y2 - - Google Patents
Info
- Publication number
- JPH05329Y2 JPH05329Y2 JP1987163736U JP16373687U JPH05329Y2 JP H05329 Y2 JPH05329 Y2 JP H05329Y2 JP 1987163736 U JP1987163736 U JP 1987163736U JP 16373687 U JP16373687 U JP 16373687U JP H05329 Y2 JPH05329 Y2 JP H05329Y2
- Authority
- JP
- Japan
- Prior art keywords
- polyurethane
- injection
- stock solution
- injection head
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 claims description 50
- 239000007924 injection Substances 0.000 claims description 50
- 229920002635 polyurethane Polymers 0.000 claims description 48
- 239000004814 polyurethane Substances 0.000 claims description 48
- 239000011550 stock solution Substances 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000005187 foaming Methods 0.000 claims description 15
- 238000001746 injection moulding Methods 0.000 claims description 11
- 239000012948 isocyanate Substances 0.000 claims description 9
- 150000002513 isocyanates Chemical class 0.000 claims description 9
- 229920005862 polyol Polymers 0.000 claims description 9
- 150000003077 polyols Chemical class 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
《産業上の利用分野》
本考案は、車両用シートのパツド等を成形する
ためのポリウレタン高圧射出成形装置の注入器に
関する。[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to an injector for a high-pressure polyurethane injection molding apparatus for molding vehicle seat pads and the like.
《従来の技術》
従来のポリウレタン高圧射出成形装置の注入器
としては、第３図に示すようなものが知られてい
る。<<Prior Art>> As a conventional injector for a polyurethane high-pressure injection molding apparatus, the one shown in FIG. 3 is known.
この注入器は、縦方向に配設されその中間部内
周壁にポリウレタン注入口１を備えた筒体状の注
入ヘツド２と、このヘツド２に一体形成されポリ
ウレタン注入口１に連通した連通孔１ａにポリオ
ールＡを注入するポリオール注入口３及びイソシ
アネートＢを注入するイソシアネート注入口４を
それぞれ備えたポリウレタン原液注入器５と、注
入ヘツド２の上部から挿入されポリウレタン注入
口１を開閉する第１クリーニングシヤフト６と、
連通孔１ａに挿入されポリオール注入口３及びイ
ソシアネート注入口４を開閉する第２クリーニン
グシヤフト７とから構成されている。 This syringe includes a cylindrical injection head 2 which is arranged vertically and has a polyurethane injection port 1 on the inner circumferential wall of its intermediate portion, and a communication hole 1a formed integrally with this head 2 and communicating with the polyurethane injection port 1. A polyurethane stock solution injector 5 equipped with a polyol injection port 3 for injecting polyol A and an isocyanate injection port 4 for injecting isocyanate B, and a first cleaning shaft 6 inserted from the top of the injection head 2 to open and close the polyurethane injection port 1. and,
The second cleaning shaft 7 is inserted into the communication hole 1a and opens and closes the polyol injection port 3 and the isocyanate injection port 4.
そして、注入ヘツド２下部には、発泡型８にポ
リウレタン原液を注入するための開口９が設けら
れている。この開口９は、単に筒体状の注入ヘツ
ド２の外形状にあつた形状の穴が形成されている
だけで、この開口９から注入されたポリウレタン
原液はその直下にある発泡型８内に落ちて発泡型
８の内側形状に合つた製品を作るようになつてい
る。 An opening 9 is provided at the bottom of the injection head 2 for injecting the polyurethane stock solution into the foam mold 8. This opening 9 is simply a hole formed in a shape that matches the outer shape of the cylindrical injection head 2, and the polyurethane stock solution injected from this opening 9 falls into the foaming mold 8 located directly below it. A product that matches the inner shape of the foaming mold 8 is manufactured using the foaming mold 8.
《考案が解決しようとする問題点》
ところが、前述のような構造の注入器では、ポ
リウレタン原液が発泡型８内の一箇所に集中的に
注入される。そして、ポリウレタン原液は、注入
が進んで第３図中実線１１で示す状態から一点鎖
線１２で示すように、スリツト等の段差部１３，
１４を乗り越えて次第に広がるが、ポリウレタン
原液は粘性が高く角部１５，１６へは進入し難い
ので、段差部１３，１４でエア溜まりが発生しや
すくなるという問題点がある。<<Problems to be Solved by the Invention>> However, in the injector having the above-mentioned structure, the polyurethane stock solution is injected in a concentrated manner into one location in the foaming mold 8. As the injection proceeds, the polyurethane stock solution moves from the state shown by the solid line 11 in FIG. 3 to the state shown by the dashed line 12 at the stepped portion 13 such as a slit,
The polyurethane gradually spreads over the step 14, but since the polyurethane concentrate is highly viscous and does not easily penetrate into the corners 15 and 16, there is a problem in that air pockets are easily formed at the step portions 13 and 14.
本考案は、ポリウレタン原液の一箇所への集中
的な注入による弊害を確実に除去できるポリウレ
タン高圧射出成形装置の注入器を提供することを
目的とする。 An object of the present invention is to provide an injector for a high-pressure polyurethane injection molding apparatus that can reliably eliminate the adverse effects of concentrated injection of raw polyurethane solution into one location.
《問題点を解決するための手段》
本考案のポリウレタン高圧射出成形装置の注入
器は、ポリオールとイソシアネートとが混合され
たポリウレタン原液の注入口を、筒体状の注入ヘ
ツドの中間部に形成し、前記注入ヘツドの一端に
前記ポリウレタン原液を型に注入する開口を設
け、かつ前記注入口を開閉するクリーニングシヤ
フトを前記注入ヘツドの他端より挿入して注入ヘ
ツド内で摺動可能に設け、更に前記注入ヘツドの
前記開口にポリウレタン原液の前記開口から発泡
型内への流出時に前記発泡型内にポリウレタン原
液を拡散させる拡散器を配置し、前記拡散器を支
持棒を介して前記クリーニングシヤフトに固定し
たことを特徴とする。<Means for Solving the Problems> The injector of the high-pressure polyurethane injection molding apparatus of the present invention has an injection port for a polyurethane stock solution containing a mixture of polyol and isocyanate formed in the middle of a cylindrical injection head. , an opening for injecting the polyurethane stock solution into the mold is provided at one end of the injection head, and a cleaning shaft for opening and closing the injection port is inserted from the other end of the injection head to be slidable within the injection head; A diffuser is arranged in the opening of the injection head to diffuse the polyurethane stock solution into the foaming mold when the polyurethane stock solution flows out from the opening into the foaming mold, and the diffuser is fixed to the cleaning shaft via a support rod. It is characterized by what it did.
《作用》
注入器の開口から流出したポリウレタン原液
は、拡散器で拡散されて発泡型内の広い範囲に散
布される。これにより、ポリウレタン原液は段差
部を乗り越える必要はなくなり、段差部の角部へ
も充分に進入するようになる。<<Operation>> The polyurethane stock solution flowing out from the opening of the syringe is diffused by the diffuser and spread over a wide area within the foaming mold. This eliminates the need for the polyurethane stock solution to go over the stepped portion, and allows the polyurethane stock solution to sufficiently enter the corners of the stepped portion.
《実施例》
第１図及び第２図は、本考案のポリウレタン高
圧射出成形装置の注入器を示す側断面図である。<<Example>> FIGS. 1 and 2 are side sectional views showing an injector of a high-pressure polyurethane injection molding apparatus of the present invention.
本考案の注入器の全体構成は、前述した従来の
注入器とほぼ同様である。つまり、本考案の注入
器は、縦方向に配設されその中間部内周壁にポリ
ウレタン注入口２０を備えた筒体状の注入ヘツド
２１と、このヘツド２１に一体形成されポリウレ
タン注入口２０に連通した連通孔２０ａにポリオ
ールＡを注入するポリオール注入口２２及びイソ
シアネートＢを注入するイソシアネート注入口２
３をそれぞれ備えたポリウレタン原液供給部２４
と、注入ヘツド２１の上部から挿入して、注入ヘ
ツド２１内を摺動可能に設けられ、ポリウレタン
注入口２０を開閉する第１クリーニングシヤフト
２５と、連通孔２０ａに挿入されポリオール注入
口２２及びイソシアネート注入口２３を開閉する
第２クリーニングシヤフト２６とから構成されて
いる。 The overall structure of the syringe of the present invention is almost the same as the conventional syringe described above. In other words, the injector of the present invention includes a cylindrical injection head 21 which is arranged vertically and has a polyurethane injection port 20 on the inner circumferential wall of its intermediate portion, and a cylindrical injection head 21 which is integrally formed with this head 21 and communicates with the polyurethane injection port 20. A polyol injection port 22 for injecting polyol A into the communication hole 20a and an isocyanate injection port 2 for injecting isocyanate B.
Polyurethane stock solution supply section 24 each having 3
A first cleaning shaft 25 is inserted from the top of the injection head 21 to be slidable inside the injection head 21 and opens and closes the polyurethane injection port 20, and a first cleaning shaft 25 is inserted into the communication hole 20a and is slidably provided inside the injection head 21 to open and close the polyurethane injection port 20. A second cleaning shaft 26 opens and closes the injection port 23.
そして、注入ヘツド２１下部の開口２７には、
その開口２７から流出するポリウレタン原液を四
方へ拡散させるためのテーパ状の拡散器２８が配
設されている。この拡散器２８は支持棒２９によ
つてクリーニングシヤフト２５に固定されてい
る。 In the opening 27 at the bottom of the injection head 21,
A tapered diffuser 28 is provided to diffuse the polyurethane stock solution flowing out from the opening 27 in all directions. This diffuser 28 is fixed to the cleaning shaft 25 by a support rod 29.
以上のように構成された注入器は、第１及び第
２クリーニングシヤフト２５，２６が各注入口２
０，２２，２３を閉鎖した第１図の状態から第２
図のように各注入口２０，２２，２３を開放する
と、ポリオールＡとイソシアネートＢとが連通孔
２０ａ内で混合しながらポリウレタンとなりポリ
ウレタン注入口２０から注入ヘツド２１内に流入
して開口２７から図示しない発泡型から流出す
る。そして、開口２７から流出するときのポリウ
レタンはテーパ状の拡散器２８で四方へ拡散され
発泡型内の広い範囲に散布される。これにより、
ポリウレタンは、その発泡が進む過程において、
発泡型内のスリツト等の段差を乗り越えて広がる
必要がなくなり、エア溜まりの発生を解消でき
る。 In the injector configured as described above, the first and second cleaning shafts 25 and 26 are connected to each injection port 2.
From the state shown in Figure 1 with 0, 22, and 23 closed, to the 2nd
When the injection ports 20, 22, and 23 are opened as shown in the figure, polyol A and isocyanate B mix in the communication hole 20a and become polyurethane, flowing into the injection head 21 from the polyurethane injection port 20 and flowing from the opening 27 as shown in the figure. Do not foam to flow out from the mold. The polyurethane flowing out from the opening 27 is diffused in all directions by the tapered diffuser 28 and spread over a wide area within the foaming mold. This results in
During the foaming process of polyurethane,
It is no longer necessary to spread over steps such as slits in the foaming mold, and the generation of air pockets can be eliminated.
《考案の効果》
本考案のポリウレタン高圧射出成形装置の注入
器によれば、拡散器でポリウレタンを発泡型内の
広い範囲に分散させて注入することができるの
で、型内に注入されたポリウレタンの発泡が進む
過程において、スリツト等の段差を乗り越えて広
がる必要がなくなり、段差の角部に発生しやすい
エア溜まりの発生を確実に解消することができる
利点がある。<<Effect of the invention>> According to the injector of the polyurethane high-pressure injection molding apparatus of the present invention, polyurethane can be dispersed and injected over a wide range within the foaming mold using the diffuser, so that the polyurethane injected into the mold can be injected. In the process of foaming, there is no need to spread over steps such as slits, and there is an advantage that air pockets that tend to occur at the corners of steps can be reliably eliminated.
しかも、本考案のポリウレタン高圧射出成形装
置の注入器によれば、その拡散器が、クリーニン
グシヤフトに支持棒を介して固定するという構成
を採つているので、注入ヘツド内に対してクリー
ニングシヤフトを摺動させて、注入ヘツド内の残
留ポリウレタン原液をクリーニングする際、同時
に発泡型側に移動することとなり、これによつ
て、注入ヘツドの開口を大きくすることができ、
残留ポリウレタン原液を容易に且つ迅速にクリー
ニングすることができ、しかも、前記拡散器を動
かす独立した機構を要せず、クリーニングシヤフ
トの動力源を利用することができ、これに伴い装
置全体の構造を簡単にすることができる。 Moreover, according to the injector of the high-pressure polyurethane injection molding apparatus of the present invention, the diffuser is fixed to the cleaning shaft via the support rod, so that the cleaning shaft cannot be slid against the inside of the injection head. When the polyurethane stock solution remaining in the injection head is cleaned by moving it, it simultaneously moves to the foaming mold side, thereby making it possible to enlarge the opening of the injection head.
The remaining polyurethane stock solution can be easily and quickly cleaned, and the power source of the cleaning shaft can be used without requiring an independent mechanism to move the diffuser, and the overall structure of the device can be reduced accordingly. It can be done easily.
第１図は本考案のポリウレタン高圧射出成形装
置の注入器を示す側断面図、第２図は第１図に示
す注入器をポリウレタン注入状態にした側断面
図、第３図は従来のポリウレタン高圧射出成形注
入器を示す側断面図である。
２０……ポリウレタン注入口、２１……注入ヘ
ツド、２５……クリーニングシヤフト、２７……
開口、２８……拡散器、２９……支持棒、Ａ……
ポリオール、Ｂ……イソシアネート。
Figure 1 is a side sectional view showing the injector of the high-pressure polyurethane injection molding apparatus of the present invention, Figure 2 is a side sectional view of the injector shown in Figure 1 in a polyurethane injection state, and Figure 3 is a conventional high-pressure polyurethane injection molding device. FIG. 2 is a side cross-sectional view of an injection molding injector. 20... Polyurethane injection port, 21... Injection head, 25... Cleaning shaft, 27...
Opening, 28... Diffuser, 29... Support rod, A...
Polyol, B...isocyanate.
Claims (1)
リウレタン原液の注入口を、筒体状の注入ヘツド
の中間部に形成し、前記注入ヘツドの一端に前記
ポリウレタン原液を型に注入する開口を設け、か
つ前記注入口を開閉するクリーニングシヤフトを
前記注入ヘツドの他端より挿入して注入ヘツド内
で摺動可能に設け、更に前記注入ヘツドの前記開
口にポリウレタン原液の前記開口から発泡型内へ
の流出時に前記発泡型内にポリウレタン原液を拡
散させる拡散器を配置し、前記拡散器を支持棒を
介して前記クリーニングシヤフトに固定したこと
を特徴とするポリウレタン高圧射出成形装置の注
入器。 An injection port for a polyurethane stock solution containing a mixture of polyol and isocyanate is formed in the middle part of a cylindrical injection head, and an opening for injecting the polyurethane stock solution into a mold is provided at one end of the injection head, and the injection port A cleaning shaft that opens and closes is inserted from the other end of the injection head and is slidably provided within the injection head, and furthermore, when the polyurethane stock solution flows out from the opening into the foaming mold, the foaming mold is inserted into the opening of the injection head. 1. An injector for a high-pressure polyurethane injection molding apparatus, characterized in that a diffuser for diffusing a polyurethane stock solution is disposed inside the injector, and the diffuser is fixed to the cleaning shaft via a support rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987163736U JPH05329Y2 (en) | 1987-10-28 | 1987-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987163736U JPH05329Y2 (en) | 1987-10-28 | 1987-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0168812U JPH0168812U (en) | 1989-05-08 |
| JPH05329Y2 true JPH05329Y2 (en) | 1993-01-07 |
Family
ID=31448725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987163736U Expired - Lifetime JPH05329Y2 (en) | 1987-10-28 | 1987-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05329Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019523839A (en) * | 2016-05-30 | 2019-08-29 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Method for manufacturing sandwich building components |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52127971A (en) * | 1976-04-19 | 1977-10-27 | Goodyear Tire & Rubber | Process for manufacture of molded foam product |
| JPS5630838A (en) * | 1979-08-18 | 1981-03-28 | Bayer Ag | Method and device for manufacturing molding from multiple component reaction mixture |
| JPS56155738A (en) * | 1980-04-03 | 1981-12-02 | Bayer Ag | Method and device for manufacturing mixture, which consist of at least two fluid reactive component and filler and form solid plastic or foam plastic |
-
1987
- 1987-10-28 JP JP1987163736U patent/JPH05329Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52127971A (en) * | 1976-04-19 | 1977-10-27 | Goodyear Tire & Rubber | Process for manufacture of molded foam product |
| JPS5630838A (en) * | 1979-08-18 | 1981-03-28 | Bayer Ag | Method and device for manufacturing molding from multiple component reaction mixture |
| JPS56155738A (en) * | 1980-04-03 | 1981-12-02 | Bayer Ag | Method and device for manufacturing mixture, which consist of at least two fluid reactive component and filler and form solid plastic or foam plastic |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0168812U (en) | 1989-05-08 |
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