JPS5830136B2 - Leopard sheep - Google Patents
Leopard sheepInfo
- Publication number
- JPS5830136B2 JPS5830136B2 JP50157373A JP15737375A JPS5830136B2 JP S5830136 B2 JPS5830136 B2 JP S5830136B2 JP 50157373 A JP50157373 A JP 50157373A JP 15737375 A JP15737375 A JP 15737375A JP S5830136 B2 JPS5830136 B2 JP S5830136B2
- Authority
- JP
- Japan
- Prior art keywords
- skin
- foam
- mold
- shape
- undercut
- 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
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
この発明はアンダーカットを有する発泡成形品の製造法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a foam molded article having an undercut.
従来自動車の内装材、例えばインストルメントパッド、
グローブボックスリッド、コンソールボックス等は、半
硬質の塩ビ系樹脂シートを用いて凹形状に成形した表皮
の凹部に半硬質ウレタンフオームを注入発泡したもので
あった。Conventional automotive interior materials, such as instrument pads,
Glove box lids, console boxes, etc. were made by injecting and foaming semi-rigid urethane foam into the recesses of the skin formed into a concave shape using semi-rigid PVC resin sheets.
このような表皮付き発泡成形品における表皮ををアンダ
ーカット形状に成形することには種々の困難性があった
。There are various difficulties in forming the skin of such a skinned foam molded product into an undercut shape.
（１）真空成形後の表皮が金型から脱型しにくい。(1) The skin after vacuum forming is difficult to remove from the mold.
（２）アンダーカット部における真空吸引力不足による
形状不良が発生し易い。(2) Shape defects are likely to occur due to insufficient vacuum suction force at the undercut portion.
（３）発泡成形時にアンダーカット部の分割可能な発泡
型が必要である。(3) A foam mold with a divisible undercut portion is required during foam molding.
本発明は上記の問題点を解決した表皮付き発泡成形品の
製造法を提供することを目的とする。An object of the present invention is to provide a method for producing a foam molded article with a skin that solves the above problems.
すなわち熱可塑性樹脂シートから表皮を凹形状に真空成
形するに当たり、凹部とソバ部の稜線に緩い角度で内方
向に向かう溝を有する金型形状に成形し、脱型後これを
発泡型に入れて上記溝部分を最終製品の形状に保持しな
がら、発泡体を充填した後、ソバ部を切取ることを特徴
とするものである。In other words, when vacuum forming the skin into a concave shape from a thermoplastic resin sheet, it is molded into a mold shape that has grooves that go inward at a gentle angle on the ridge lines of the concave part and the buckwheat part, and after demolding, this is placed in a foaming mold. The method is characterized in that after filling the groove portion with the foam while maintaining the shape of the final product, the buckwheat portion is cut off.
本発明で用いられる熱可塑性樹脂シートの例としては、
半硬質塩ビシート、ＡＢＳ樹脂シート等が挙げられる。Examples of thermoplastic resin sheets used in the present invention include:
Examples include semi-rigid PVC sheets, ABS resin sheets, and the like.
充填される発泡体の代表例は半硬質ウレタンフオームで
あるが これに限られるものではない。A typical example of the foam to be filled is semi-rigid urethane foam, but it is not limited to this.
以下本発明を図面を用いて説明する。The present invention will be explained below using the drawings.
第１図は本発明で得られる表皮付き発泡成形品の横断面
を示し、１０は表皮、１２はウレタンフオーム、１４は
アンダーカット部、１６は表皮の端末である。FIG. 1 shows a cross section of a foam molded article with a skin obtained by the present invention, where 10 is the skin, 12 is the urethane foam, 14 is an undercut, and 16 is the end of the skin.
第２〜４図に本発明の各工程を示す。2 to 4 show each step of the present invention.
０．５〜１山厚程度の半硬質塩ビ系シートを第２図に示
す形状の金型２２で真空成形する。A semi-rigid PVC sheet having a thickness of approximately 0.5 to 1 mound is vacuum formed using a mold 22 having the shape shown in FIG.
１Ｂは凹部１０／とツバ部２０とがなす稜線に設けられ
た緩い角度（約３０〜６００の角度でツバ部から傾斜）
で凹部方向に向かう溝である。1B is a gentle angle provided on the ridgeline formed by the concave portion 10/ and the collar portion 20 (slanted from the collar portion at an angle of approximately 30 to 600 degrees)
This is a groove that goes toward the recess.
約１間程度の深さが好ましい。A depth of about 1 inch is preferred.
この場合真空成形後の表皮のアンダーカット部は顕著に
薄肉化している。In this case, the undercut portion of the skin after vacuum forming is noticeably thinner.
したがって金型２２からの表皮の脱型が非常に簡単にで
きる。Therefore, the skin can be removed from the mold 22 very easily.
この表皮１０を第３図に示す発泡型キャビティ２４内に
装着し、表皮１００アンダーカット部１を図のように発
泡型コア２６で押さえてウレタン原液を注入発泡させる
と、発泡圧で表皮のアンダ−カット部１４は最終製品の
形状に成形される。This skin 10 is installed in the foam mold cavity 24 shown in FIG. 3, and when the undercut part 1 of the skin 100 is pressed by the foam core 26 as shown in the figure and the urethane stock solution is injected and foamed, the undercut of the skin is caused by the foaming pressure. - The cut 14 is formed into the shape of the final product.
これを型から取り出して第４図に示すように端末部分１
６をナイフ２８で切断すると、第１図に示す表皮付き発
泡成形品を得ることができる。Take this out of the mold and as shown in Figure 4, the terminal part 1
6 with a knife 28, a foam molded product with a skin as shown in FIG. 1 can be obtained.
本発明によれば以下の効果が達成される。According to the present invention, the following effects are achieved.
（１）従来のアンダーカットなしの成形品と同じ工程で
成形できる。(1) Can be molded in the same process as conventional molded products without undercuts.
（２）端末部分の切断が容易である。(2) The terminal portion can be easily cut.
（３）分割型を使用しないのでパーティングラインが現
われず、商品価値が高い。(3) Since a split die is not used, no parting line appears, and the product value is high.
第１図は本発明方法で得られた表皮付き発泡成形品の横
断面図、第２図〜第４図は本発明方法の各工程を示し、
第２図は表皮の真空成形工程における金型部分の断面図
、第３図は発泡工程における金型部分の断面図、第４図
は表皮の不要部分を切断する工程を示す要部断面図であ
る。
符号の説明、１０・・・表皮、１２・・・ウレタンフオ
ーム、１４・・・アンダーカット部、１６・・・表皮の
端末、１８・・・溝、２０・・・ツバ部、２２・・・真
空成形型、２ ・・・発泡型キャビティ、２６・・・発
泡型コア、２８・・・ナイフ。FIG. 1 is a cross-sectional view of a foam molded product with a skin obtained by the method of the present invention, and FIGS. 2 to 4 show each step of the method of the present invention.
Figure 2 is a sectional view of the mold part in the vacuum forming process of the skin, Figure 3 is a sectional view of the mold part in the foaming process, and Figure 4 is a sectional view of essential parts showing the process of cutting off unnecessary parts of the skin. be. Explanation of the symbols: 10...Skin, 12...Urethane foam, 14...Undercut portion, 16...End of skin, 18...Groove, 20...Brim portion, 22... Vacuum forming mold, 2... Foaming mold cavity, 26... Foaming mold core, 28... Knife.
Claims (1)
るに当り、凹部とソバ部との稜線に緩い角度で内方向に
向かう溝を有する金型形状に成形し、脱型後これを発泡
型に入れて上記溝部分を最終製品の形状に保持しながら
、発泡体を充填した後、ツバ部を切取ることを特徴とす
るアンダーカットを有する表皮付き発泡成形品の製造法
。1. When vacuum forming the skin into a concave shape from a thermoplastic resin sheet, it is molded into a mold shape that has grooves that go inward at a gentle angle on the ridge line between the concave part and the buckwheat part, and after demolding, this is made into a foaming mold. 1. A method for producing a foam molded product with an undercut skin, which comprises filling the groove with foam and cutting off the brim portion while holding the groove portion in the shape of the final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50157373A JPS5830136B2 (en) | 1975-12-29 | 1975-12-29 | Leopard sheep |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50157373A JPS5830136B2 (en) | 1975-12-29 | 1975-12-29 | Leopard sheep |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5282971A JPS5282971A (en) | 1977-07-11 |
| JPS5830136B2 true JPS5830136B2 (en) | 1983-06-27 |
Family
ID=15648227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50157373A Expired JPS5830136B2 (en) | 1975-12-29 | 1975-12-29 | Leopard sheep |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5830136B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854170Y2 (en) * | 1979-03-09 | 1983-12-09 | 日立プラント建設株式会社 | Sedimentation pond |
| JP5901329B2 (en) * | 2012-02-09 | 2016-04-06 | 株式会社イノアックコーポレーション | Method for producing foam molded article and foam mold with bag-like body used therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3379800A (en) * | 1964-08-20 | 1968-04-23 | Goodyear Tire & Rubber | Method for making cushion structure |
-
1975
- 1975-12-29 JP JP50157373A patent/JPS5830136B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3379800A (en) * | 1964-08-20 | 1968-04-23 | Goodyear Tire & Rubber | Method for making cushion structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5282971A (en) | 1977-07-11 |
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