JPH01301313A - Manufacture of head rest - Google Patents
Manufacture of head restInfo
- Publication number
- JPH01301313A JPH01301313A JP63133823A JP13382388A JPH01301313A JP H01301313 A JPH01301313 A JP H01301313A JP 63133823 A JP63133823 A JP 63133823A JP 13382388 A JP13382388 A JP 13382388A JP H01301313 A JPH01301313 A JP H01301313A
- Authority
- JP
- Japan
- Prior art keywords
- foamed resin
- stay
- skin
- protrusion
- head rest
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011347 resin Substances 0.000 claims abstract description 34
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000000071 blow moulding Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 3
- 238000010125 resin casting Methods 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000013022 venting Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 210000002615 epidermis Anatomy 0.000 description 11
- 210000003491 skin Anatomy 0.000 description 8
- 239000006260 foam Substances 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、自動車等のヘッドレストの製造方法に関する
もので、さらにくわしくは内部に充填する発泡樹脂を効
率よく充填し、しがち発泡樹脂より発生したガスを内部
に残すことなく形成することのできるヘッドレストの製
造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing headrests for automobiles, etc., and more specifically, to efficiently fill the inside with foamed resin and eliminate gases that tend to be generated from the foamed resin. This invention relates to a method for manufacturing a headrest that can be formed without leaving any residue inside.
従来の技術
ヘッドレストを座席に固定するステイを内部に埋め込ん
だ軟質プラスチックからなる表皮内に発泡樹脂を注入す
るヘッドレストの製造方法は特開昭６０−８０１８号公
報により公知である。BACKGROUND OF THE INVENTION A method for manufacturing a headrest in which foamed resin is injected into a skin made of soft plastic in which stays for fixing the headrest to the seat are embedded is known from Japanese Patent Laid-Open No. 8018/1983.
発明が解決すべき課題
上記した製造方法では、表皮内に充填した発泡樹脂から
発生したガスが表皮の内側に溜り、そのガスにより表皮
の内側に発泡樹脂が充填されていない部分が発生ずる。Problems to be Solved by the Invention In the manufacturing method described above, gas generated from the foamed resin filled in the epidermis accumulates inside the epidermis, and this gas causes areas inside the epidermis that are not filled with the foamed resin.
この未充填部分は、肢終的に空洞となり、押えると容易
に変形し充分な保護緩衝性が得られないばかりか外観上
も好ましいものではなかった。This unfilled portion ended up being hollow, easily deformed when pressed, and not only did it not provide sufficient protection and cushioning properties, but it was also undesirable in terms of appearance.
課題を解決する手段と作用
本発明は上記課題を解決するために、
パリスン内にステイを配置し、分割金型を閉めてバリス
ンをブロー成形することにより、ステイの中央部分を内
包する枕部とその下端の二つの突出部からなる表皮を軟
質プラスチックにて形成するとともに、突出部に発泡樹
脂注入孔及びガス抜き孔を形成し、発泡樹脂注入孔より
発泡樹脂を注入し発泡樹脂から発生したガスをガス抜き
孔より抜きながら形成する
ようにしたものである。Means and Effects for Solving the Problems In order to solve the above-mentioned problems, the present invention arranges a stay in a parison, closes a divided mold, and blow-moldes the parison, thereby creating a pillow part that includes the center part of the stay. The skin consisting of the two protruding parts at the lower end is made of soft plastic, and a foamed resin injection hole and a gas vent hole are formed in the protruding part, and the foamed resin is injected through the foamed resin injection hole, and the gas generated from the foamed resin is formed. The gas is formed while being removed from the gas vent hole.
本発明はステイの中央部分を内包する枕部とその下端の
二つの突出部からなる表皮を軟質プラスチックにて形成
するとともに、突出部に発泡樹脂注入孔及びガス抜き孔
を形成したので、発泡樹脂注入孔から注入した発泡樹脂
が表皮内に充填されて行き、発泡が進行してゆく段階で
発生するガスが他方の突出部に集り、この部分に形成し
たガス抜き孔から効率良く除去することが可能であり、
表皮内部に密に発泡樹脂を形成することができるのであ
る。In the present invention, the skin consisting of the pillow part that includes the center part of the stay and the two protruding parts at the lower end of the pillow part is made of soft plastic, and the protruding part has a foam resin injection hole and a gas vent hole. The foamed resin injected through the injection hole fills the skin, and as the foaming progresses, the gas generated collects at the other protrusion and can be efficiently removed from the gas vent hole formed in this area. It is possible and
This allows foamed resin to be formed densely inside the epidermis.
実施例 本発明の一実施例を図面に基づき説明する。Example An embodiment of the present invention will be described based on the drawings.
第１図は本発明により得られたヘッドレストの全体斜視
図を示す、ヘッドレスト１は、ヘッドレスト本体２とス
テイ３より形成されている。ヘッドレスト本体２は軟質
プラスチックからなる表皮４とその内部の発泡樹脂５か
ら構成され、ステイ３はＵ字状の金属で、ヘッドレスト
本体２内にその中央部分が埋め込まれ、ステイ３の先端
が外部に露出している。FIG. 1 shows an overall perspective view of a headrest obtained according to the present invention. The headrest 1 is formed of a headrest main body 2 and a stay 3. The headrest body 2 is composed of a skin 4 made of soft plastic and a foamed resin 5 inside.The stay 3 is a U-shaped metal whose central part is embedded within the headrest body 2, and the tip of the stay 3 is external. exposed.
製造に際して先ず第２図に示すように押出機（図示せず
）にて加熱混練溶融したプラスチックをヘッド６より管
状パリスジ７として分割金型８．８の間に押出垂下する
。このプラスチックとしては、可塑剤をポリ塩化ビニル
１００部に対して６０部含んだ軟質ポリ塩化ビニル等の
軟質プラスチックが使用される。バリスン７内にＵ字状
の金属製ステイ３を入れて予め指定された位置にて固定
保持する。ステイ３のＵ字状の角部分３ａには断熱部材
９が配置され、分割金型８．８の型閉め時のバリスジ７
がステイ３に接触して不測に溶着したり、バリスジ７が
部分的に冷却されることを防止するものであり、これに
よりブロー成形された表皮４の表面にスジ等の外観不良
が防止される。In manufacturing, first, as shown in FIG. 2, plastic is heated, kneaded, and melted using an extruder (not shown) and extruded from the head 6 into a tubular paris 7 and suspended between the split molds 8 and 8. As this plastic, a soft plastic such as soft polyvinyl chloride containing 60 parts of plasticizer per 100 parts of polyvinyl chloride is used. A U-shaped metal stay 3 is inserted into a ballisne 7 and fixedly held at a prespecified position. A heat insulating member 9 is disposed at the U-shaped corner portion 3a of the stay 3, and the burr ridge 7 when the split mold 8.8 is closed.
This prevents the burr 7 from coming into contact with the stay 3 and being unexpectedly welded, and from partially cooling the burr 7. This prevents appearance defects such as streaks on the surface of the blow-molded skin 4. .
分割金型８．８の内面にはヘッドレスト本体２の形状が
凹設賦形されたキャビティ１０を成している９次に分割
金型８．８を閏めてパリスン７内に吹込みノズル（図示
せず）よりに圧力流体を導入し、パリスジ７にキャビテ
ィ１０の形状を形成する。このとき、突出部１１の一方
１１ａ（二発泡樹脂注入孔１２を形成する１次いで、分
割金型８．８よりスティ３を内包する表皮４を取出し、
突出部１１を上にして、発泡樹脂注入孔１２が上を向く
ように配置し、表皮４内に圧力を加えて表皮４表面を緊
張させてから、複数の針にて微少な複数のガス抜き孔１
３を突出部１１の他方１１ｂに形成する。この発泡樹脂
注入孔１２及びガス抜き孔１３は、突出部１１の上部に
形成し、しかも突出部１１の互いの一方にそれぞれ形成
する。この際複数の針は加熱されているのが好ましく、
このようにすることにより表皮に接触させるだけで、容
易に穿孔することができる０次いで、発泡樹脂注入孔１
２に密着固定した発泡樹脂注入ノズル１４を挿入して発
泡樹脂を注入する０表皮４内に入った発’Ｉ！、Ｖｊ４
脂は発泡しながら表皮４内に沿って埋めてゆき、他方の
突出部１１ｂに向かう、この突出部１１ｂに発泡による
ガスが溜り、ガス抜き孔１３より表皮の外側に抜くこと
ができる。また、突出部１１に形成される表皮４とステ
ィ３とが接触する保持部１５ａ、１５ｂに０，５〜３−
の微少な隙間を形成しておくことにより、さらに、経時
的に発生したガスを効率良く抜きとることができる。The inner surface of the split mold 8.8 forms a cavity 10 in which the shape of the headrest main body 2 is formed. (not shown) to form a cavity 10 in the paris 7. At this time, one side 11a of the protrusion 11 (the one forming the two foamed resin injection holes 12), then the skin 4 containing the stay 3 is taken out from the split mold 8.8,
Place the foamed resin injection hole 12 facing upward with the protrusion 11 facing upward, apply pressure inside the epidermis 4 to make the surface of the epidermis 4 taut, and then perform multiple minute degassing with multiple needles. Hole 1
3 is formed on the other side 11b of the protrusion 11. The foamed resin injection hole 12 and the gas vent hole 13 are formed in the upper part of the protrusion 11, and are formed on one side of the protrusion 11, respectively. At this time, it is preferable that the plurality of needles be heated.
By doing this, the holes can be easily drilled just by contacting the epidermis.Next, the foamed resin injection holes 1
Insert the foam resin injection nozzle 14 tightly fixed into the foam resin injection nozzle 2 and inject the foam resin into the epidermis 4! ,Vj4
The fat fills up the inside of the epidermis 4 while foaming, and gas from the foaming accumulates in this protrusion 11b toward the other protrusion 11b, and can be discharged to the outside of the epidermis through the gas vent hole 13. In addition, 0,5 to 3-
By forming such a small gap, gas generated over time can be further efficiently removed.
発明の効果
本発明は以上のように構成したので、発泡樹脂の充填時
に発生するガスを効率よく抜取ることが可能であり、表
皮内部に密に発泡樹脂を形成することができるのである
。Effects of the Invention Since the present invention is constructed as described above, it is possible to efficiently extract the gas generated when filling the foamed resin, and it is possible to form the foamed resin densely inside the epidermis.
【図面の簡単な説明】
第１図は本発明の実施例に係るヘッドレストの全体斜視
図、第２図はブロー成形工程を示す側面図、第３図は発
泡樹脂の充填前の状態を示す側面図、第４図は発泡樹脂
の充填時を示す側面図である。
■・・ヘッドレスト ３ ・ステイ
４・・表皮 ５ ・発泡樹脂
７・・バリスン ８・・分割金型
１１ ・突出部 １２・・発泡樹脂注入孔１３・
ガス抜き孔[Brief Description of the Drawings] Fig. 1 is an overall perspective view of a headrest according to an embodiment of the present invention, Fig. 2 is a side view showing the blow molding process, and Fig. 3 is a side view showing the state before filling with foamed resin. FIG. 4 is a side view showing the state of filling with foamed resin. ■...Headrest 3 - Stay 4... Skin 5 - Foamed resin 7... Balison 8... Split mold 11 - Protrusion 12... Foamed resin injection hole 13.
Gas vent hole
Claims (1)
ンをブロー成形することにより、ステイの中央部分を内
包する枕部とその下端の二つの突出部からなる表皮を軟
質プラスチックにて形成するとともに、突出部に発泡樹
脂注入孔及びガス抜き孔を形成し、発泡樹脂注入孔より
発泡樹脂を注入し発泡樹脂から発生したガスをガス抜き
孔より抜きながら形成することを特徴とするヘッドレス
トの製造方法。By placing the stay inside the parison, closing the split mold, and blow-molding the parison, a skin consisting of a pillow part containing the center part of the stay and two protruding parts at its lower end is formed from soft plastic. A method for manufacturing a headrest, characterized in that a foamed resin injection hole and a gas vent hole are formed in the protrusion, foamed resin is injected through the foamed resin injection hole, and gas generated from the foamed resin is removed from the gas vent hole. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63133823A JPH0624734B2 (en) | 1988-05-31 | 1988-05-31 | Headrest manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63133823A JPH0624734B2 (en) | 1988-05-31 | 1988-05-31 | Headrest manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01301313A true JPH01301313A (en) | 1989-12-05 |
| JPH0624734B2 JPH0624734B2 (en) | 1994-04-06 |
Family
ID=15113874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63133823A Expired - Fee Related JPH0624734B2 (en) | 1988-05-31 | 1988-05-31 | Headrest manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624734B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06328550A (en) * | 1993-05-20 | 1994-11-29 | Mitsubishi Yuka Badische Co Ltd | Composite molded body and its manufacture |
| US10495704B2 (en) | 2013-11-20 | 2019-12-03 | Aspect Imaging Ltd. | Shutting assembly for closing an entrance of an MRI device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105506A (en) * | 1983-11-14 | 1985-06-11 | Tokyo Seat Kk | Preparation of integrally blow-molded piece |
-
1988
- 1988-05-31 JP JP63133823A patent/JPH0624734B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105506A (en) * | 1983-11-14 | 1985-06-11 | Tokyo Seat Kk | Preparation of integrally blow-molded piece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06328550A (en) * | 1993-05-20 | 1994-11-29 | Mitsubishi Yuka Badische Co Ltd | Composite molded body and its manufacture |
| US10495704B2 (en) | 2013-11-20 | 2019-12-03 | Aspect Imaging Ltd. | Shutting assembly for closing an entrance of an MRI device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624734B2 (en) | 1994-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |