JPS639518A - Manufacture of synthetic resin product with decorative skin body - Google Patents
Manufacture of synthetic resin product with decorative skin bodyInfo
- Publication number
- JPS639518A JPS639518A JP15349486A JP15349486A JPS639518A JP S639518 A JPS639518 A JP S639518A JP 15349486 A JP15349486 A JP 15349486A JP 15349486 A JP15349486 A JP 15349486A JP S639518 A JPS639518 A JP S639518A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- cavity
- sprue
- mold
- decorative skin
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 28
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 abstract description 3
- 229920001169 thermoplastic Polymers 0.000 abstract description 3
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000010010 raising Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 208000028804 PERCHING syndrome Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、たとえば、自動車の内装材などとして用いる
装飾表皮体を有する合成樹脂製品の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a method for manufacturing a synthetic resin product having a decorative skin body used, for example, as an interior material for an automobile.
（従来の技術）
従来、表面に装飾表皮体を有する合成樹脂製品の製造に
あたっては、たとえば、特開昭５５−１０９６５９号公
報に示される方法が用いられている。(Prior Art) Conventionally, in manufacturing synthetic resin products having a decorative skin on the surface, a method disclosed in, for example, Japanese Patent Application Laid-open No. 109659/1983 has been used.
この方法は、第６図に示すように、金型１として、スプ
ルー・２を有する固定型３と可動型４とを対設し、この
固定型３と可動型４との間に、表面に起毛５を有する布
地などの装飾表皮体６を配置し、第７図に示すように、
上記固定型３と可動型４を型閉して、スプルー２からキ
ャビティ内に熱可塑性の溶融合成樹脂７を射出し、第８
図に示すように、表面に装飾表皮体６を一体に有する合
成樹脂製品８を成形するものである。In this method, as shown in FIG. 6, a fixed mold 3 having a sprue 2 and a movable mold 4 are installed as a mold 1, and a surface is formed between the fixed mold 3 and the movable mold 4. A decorative skin body 6 such as a cloth having a nap 5 is placed, and as shown in FIG.
The fixed mold 3 and the movable mold 4 are closed, and the thermoplastic molten synthetic resin 7 is injected from the sprue 2 into the cavity.
As shown in the figure, a synthetic resin product 8 integrally having a decorative skin body 6 on its surface is molded.
（発明が解決しようとする問題点）
上記の製造方法の場合、装飾表皮体６のスプルー２の内
端部、すなわち、キャビティへの流入部と対向する部分
６ａはスプルー２を通って射出されて来る溶融合成樹脂
７が一番最初に当る場所であり、装飾表皮体６の他の部
分に比べて射出圧力が最も高く作用し、そのため、装飾
表皮体６の細かな隙間から表面へ合成樹脂が浸透する現
象が発生し、第８図に示すように、製品８のスプルー２
と対向して溶融合成樹脂７が直接当たる位芦にしみ９が
でき、表面の外観が損なわれる。(Problems to be Solved by the Invention) In the case of the above manufacturing method, the inner end of the sprue 2 of the decorative skin body 6, that is, the portion 6a facing the inlet into the cavity is injected through the sprue 2. This is the first place that the incoming molten synthetic resin 7 hits, and the injection pressure is highest compared to other parts of the decorative skin 6, so that the synthetic resin flows from the small gaps in the decorative skin 6 to the surface. A penetration phenomenon occurs, and as shown in Figure 8, the sprue 2 of product 8
A stain 9 is formed on the reed where the molten synthetic resin 7 directly contacts the reed, which impairs the appearance of the surface.
本発明は、上述のような問題を解決しようとするもので
、表面にしみなどが出ない外観の良好な合成樹脂製品を
１υることを目的とするものである。The present invention is intended to solve the above-mentioned problems, and aims to provide a synthetic resin product with a good appearance and without stains on the surface.
（問題点を解決するための手段）
本発明の装飾表皮体を有する合成樹脂製品の製造方法は
、金型内に装飾表皮体を配置し、上記金型のスプルーか
らキャビティ内に溶融合成樹脂を射出して表面に装飾表
皮体を有する合成樹脂製品を製造するにあたり、上記金
型のスプルーの内端部に分流用の駒を設け、上記スプル
ーから導入される溶融合成樹脂を胴内を通してキャビテ
ィ内に分流射出するものである。(Means for Solving the Problems) The method of manufacturing a synthetic resin product having a decorative skin body according to the present invention includes arranging a decorative skin body in a mold, and injecting a molten synthetic resin into the cavity from the sprue of the mold. When manufacturing a synthetic resin product that has a decorative skin on its surface by injection, a diversion piece is provided at the inner end of the sprue of the mold, and the molten synthetic resin introduced from the sprue is passed through the body and into the cavity. It injects a separate flow into the
（作用）
本発明は、金型のスプルーから導入される溶融合成樹脂
を胴内を通してキャビティ内に分流射出することにより
、スプルーからの射出圧力を駒の内底面部で受け、スプ
ルーからキャビティ内に射出される溶融合成樹脂がキャ
ビティへの流入部において装飾表皮体に直接当らないよ
うにして射出成形するものである。(Function) The present invention allows the molten synthetic resin introduced from the sprue of the mold to be injected into the cavity through the inside of the mold in a separate flow, so that the injection pressure from the sprue is received by the inner bottom surface of the piece, and the resin is injected from the sprue into the cavity. Injection molding is performed in such a way that the molten synthetic resin does not come into direct contact with the decorative skin body at the inflow portion into the cavity.
（実施例） 以下、本発明の一実施例を図面を参照して説明する。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図に示すように、金型１として、スプルー２を有す
る固定型３と可動型４とを対設し、上記スプルー２の内
端部に分流用の駒１１を設ける。As shown in FIG. 1, a mold 1 includes a fixed mold 3 having a sprue 2 and a movable mold 4 facing each other, and a piece 11 for diverting flow is provided at the inner end of the sprue 2.
この分流用の駒１１は、第２図に示すように、射出され
る溶融合成樹脂と同材質または溶融合成樹脂より溶ｉａ
温度がやや高い合成樹脂材料によって一体に形成され、
円盤状の本体１２の一面に導入口筒１３が突設されてい
るとともに、本体１２の周囲部に上記導入口部１３と連
通した少なくとも２個以上の４個等複数個の導出口１４
が形成されている。As shown in FIG.
It is integrally formed from a synthetic resin material with a slightly high temperature.
An inlet tube 13 is provided protruding from one surface of the disc-shaped main body 12, and a plurality of outlet ports 14, such as at least two or more four outlet ports, communicate with the inlet port 13 on the periphery of the main body 12.
is formed.
そうして、第１図のように、固定型３のスプルー２の内
端部に駒１１の導入口筒１３を嵌合して固定型３に駒１
１を装着する。ついで、この駒１１を設けた固定！！、
！３のキャビテイ面からパーチイングラ゛ イン面
に沿って表面に起毛５を有する布地などの装飾表皮体６
を添着し、固定型３と可動型４との間に装飾表皮体６を
配置する。Then, as shown in FIG.
Attach 1. Next, fix this piece 11! ! ,
! A decorative skin body 6 such as fabric having a raised surface 5 from the cavity surface of 3 along the perching line surface.
is attached, and a decorative skin body 6 is placed between the fixed mold 3 and the movable mold 4.
ついで、第３図に示すように、固定を３と可動型４とを
型閉して、スプルー２から熱可塑性合成樹脂の溶融合成
樹脂７を導入する。この溶融合成樹脂７は、第４図に示
すように、駒１１の導入口筒１３から本体１２の各導出
口１４からキャビティ内に分流侵入する。この際、溶融
合成樹脂７は導入口筒１３からこれに対向する本体１２
の内底面にぶつかり、各導出口１４からキャビティ内に
いっばいに広がり、充填され、第５図に示すように、駒
１１を埋設して表面に装飾表皮体６を一体に有する合成
樹脂製品８が成形される。Then, as shown in FIG. 3, the fixed mold 3 and the movable mold 4 are closed, and a molten thermoplastic synthetic resin 7 is introduced from the sprue 2. As shown in FIG. 4, the molten synthetic resin 7 enters into the cavity in a branched manner from the inlet tube 13 of the piece 11 to the outlet ports 14 of the main body 12. At this time, the molten synthetic resin 7 is transferred from the inlet tube 13 to the main body 12 opposite thereto.
The synthetic resin product 8 spreads out into the cavity from each outlet 14 and is filled, as shown in FIG. is formed.
本発明によれば、金型のスプル一部における射出圧力の
部分的集中の援用が行なわれ、これによって、装飾表皮
体によって覆われた製品の表面に対する成形時の部分的
浸透現象が防止でき、表面外観のよい製品を得ることが
できる。According to the present invention, the injection pressure is partially concentrated in a part of the sprue of the mold, thereby preventing the phenomenon of partial penetration of the surface of the product covered by the decorative skin during molding. A product with a good surface appearance can be obtained.
第１図は本発明の方法の一実施例を示す断面図、第２図
は第１図の駒の斜視図、第３図および第４図は射出状態
を示す一部の断面図、第５図は製品の断面図、第６図は
従来の方法を示す断面図、第７図は第６図の射出状態を
示す一部の断面図、第８図は製品の斜視図である。
１・・金型、２・・スプルー、６・・装飾表皮体、７・
・溶融合成樹脂、８・・製品、１１・・駒。
峯ＡＭFig. 1 is a sectional view showing an embodiment of the method of the present invention, Fig. 2 is a perspective view of the piece in Fig. 1, Figs. 3 and 4 are partial sectional views showing the injection state, and Fig. 5. 6 is a sectional view of the product, FIG. 6 is a sectional view showing a conventional method, FIG. 7 is a partial sectional view showing the injection state of FIG. 6, and FIG. 8 is a perspective view of the product. 1. Mold, 2. Sprue, 6. Decorative skin, 7.
- Molten synthetic resin, 8...product, 11...piece. Mine AM
Claims (1)
ーからキャビティ内に溶融合成樹脂を射出して表面に装
飾表皮体を有する合成樹脂製品を製造するにあたり、 上記金型のスプルーの内端部に分流用の駒を設け、上記
スプルーから導入される溶融合成樹脂を駒内を通してキ
ャビティ内に分流射出することを特徴とする装飾表皮体
を有する合成樹脂製品の製造方法。(1) When manufacturing a synthetic resin product having a decorative skin on the surface by arranging a decorative skin in the mold and injecting molten synthetic resin into the cavity from the sprue of the mold, the sprue of the mold A method for manufacturing a synthetic resin product having a decorative skin body, characterized in that a piece for diverting flow is provided at the inner end of the sprue, and the molten synthetic resin introduced from the sprue is injected in a divided flow into a cavity through the piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15349486A JPS639518A (en) | 1986-06-30 | 1986-06-30 | Manufacture of synthetic resin product with decorative skin body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15349486A JPS639518A (en) | 1986-06-30 | 1986-06-30 | Manufacture of synthetic resin product with decorative skin body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS639518A true JPS639518A (en) | 1988-01-16 |
| JPH047976B2 JPH047976B2 (en) | 1992-02-13 |
Family
ID=15563784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15349486A Granted JPS639518A (en) | 1986-06-30 | 1986-06-30 | Manufacture of synthetic resin product with decorative skin body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS639518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533097A1 (en) * | 2003-11-11 | 2005-05-25 | Sony Ericsson Mobile Communications AB | An injection mould for in-mould decoration and plastic article obtained using the mould |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836151U (en) * | 1971-09-03 | 1973-04-28 |
-
1986
- 1986-06-30 JP JP15349486A patent/JPS639518A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836151U (en) * | 1971-09-03 | 1973-04-28 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533097A1 (en) * | 2003-11-11 | 2005-05-25 | Sony Ericsson Mobile Communications AB | An injection mould for in-mould decoration and plastic article obtained using the mould |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH047976B2 (en) | 1992-02-13 |
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