JPH03334Y2

JPH03334Y2 -

Info

Publication number: JPH03334Y2
Application number: JP13480485U
Authority: JP
Priority date: 1985-09-03
Filing date: 1985-09-03
Publication date: 1991-01-09
Also published as: JPS6243716U

Description

【考案の詳細な説明】（産業上の利用分野）この考案は、発泡成形型に配置されて、発泡体
形成原料が注入される一体発泡用表皮材に関す
る。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a skin material for integral foaming, which is placed in a foaming mold and into which a foam-forming raw material is injected.

（従来の技術）自動車内装部品であるアーレムスト、クラツシ
ユパツド等の製造は、その作業の容易さから一体
発泡法によつて行われるのが一般である。(Prior Art) Automotive interior parts such as armrests and crash pads are generally manufactured by the integral foaming method due to ease of operation.

その一体発泡法とは、熱可塑性プラスチツクか
らなる表皮材を発泡成形型に配置し、該表皮材内
にウレタンフオーム原料等の発泡体成形原料を注
入して発泡体を形成し、同時に該発泡体と表皮材
との一体化を行うものである。 The integral foaming method involves placing a skin material made of thermoplastic plastic in a foam mold, injecting a foam molding raw material such as a urethane foam raw material into the skin material to form a foam, and at the same time forming a foam. The material is integrated with the skin material.

そして、一体発泡に用いられる表皮材には、発
泡成形型への配置時に正確な位置決めが可能なよ
うに、第３図の平面図、第４図の要部斜視図に示
す表皮材１０の如く、周囲に中空の円柱状突部
（通称ダボ）１２が形成されており、その突部１
２を発泡成形型１４の突部１６、及び凹部（図示
せず）に嵌合させて表皮材１０の正確な位置決め
が行われている。 The skin material used for integral foaming has a skin material 10 shown in the plan view of FIG. 3 and the perspective view of the main part of FIG. , a hollow cylindrical protrusion (commonly known as a dowel) 12 is formed around the periphery, and the protrusion 1
2 is fitted into the protrusion 16 and recess (not shown) of the foam mold 14 to accurately position the skin material 10.

（考案が解決しようとする問題点）ところが前記表皮材の突部１２は、スラツシユ
成形等による表皮材１０の成形時に、表皮材成形
用型の型面の円柱状突起に密着して形成され、且
つ頂部１２ａが薄肉化することから、表皮材１０
を表皮材成形用型から脱型する際に突部１２内面
と前記円柱状突起との空間が減圧となつて反転す
ることが往々にしてある。そして、そのように突
部１２が反転した表皮材１０は、発泡成形型１４
に配置する前に突部１２を正常な表皮材に戻して
おかねばならず、余分な作業が必要となつてい
た。(Problems to be Solved by the Invention) However, the protrusion 12 of the skin material is formed in close contact with a cylindrical protrusion on the mold surface of the mold for molding the skin material during molding of the skin material 10 by slush molding or the like. In addition, since the top portion 12a is thinned, the skin material 10
When the mold is removed from the mold for molding the skin material, the space between the inner surface of the protrusion 12 and the cylindrical protrusion is often reduced in pressure and reversed. The skin material 10 with the protrusions 12 inverted in this way is then molded into a foam mold 14.
The protrusions 12 had to be returned to normal skin material before being placed on the surface, which required extra work.

この考案は前記の点に鑑みてなされたもので、
位置決め用中空突部の反転を生じにくい表皮材の
提供を目的とするものである。 This idea was made in view of the above points,
The object of the present invention is to provide a skin material that does not easily cause the hollow protrusion for positioning to reverse.

（問題点を解決するための手段）この考案は、熱可塑性プラスチツクからなり、
発泡成形型への配置時の位置決め用中空突部を有
する一体発泡用表皮材において、該突部を中空角
柱形状としたことを特徴とするものである。(Means for solving the problem) This invention is made of thermoplastic,
A skin material for integrally foaming having a hollow protrusion for positioning when placed in a foam mold is characterized in that the protrusion has a hollow prismatic shape.

（作用）中空角柱形状は、側面が略直交しているので、
中空円柱と比べて変形し難い性質を有する。(Function) Since the hollow prismatic shape has substantially perpendicular sides,
It has the property of being less deformable than a hollow cylinder.

従つて、位置決め用中空突部を中空角柱形状と
するこの考案の表皮材は、表皮材成形用型からの
脱型時にその突部が反転しにくくなるのである。 Therefore, in the skin material of this invention in which the hollow protrusion for positioning has a hollow prismatic shape, the protrusion becomes difficult to turn over when removed from the mold for molding the skin material.

（実施例）第１図はこの考案一実施例である表皮材１８の
要部斜視図、第２図は表皮材１８の平面図であ
る。(Embodiment) FIG. 1 is a perspective view of a main part of a skin material 18 which is an embodiment of this invention, and FIG. 2 is a plan view of the skin material 18.

表皮材１８は、熱可塑性プラスチツクからなる
スラツシユ成形品で、フランジ部２０に発泡体成
形型への配置時の位置決め用中空突部２２を所定
数有する。 The skin material 18 is a slush molded product made of thermoplastic, and has a predetermined number of hollow protrusions 22 on the flange portion 20 for positioning when placed in a foam mold.

位置決め用中空突部２２は中空角柱形状からな
り、その寸法は表皮材の用途によつて異なるが、
クラツシユパツド用表皮材とした場合の一例とし
て、ａ＝25mm、ｂ＝ｃ＝７mmとしたものをあげる
ことができる。 The positioning hollow protrusion 22 has a hollow prismatic shape, and its dimensions vary depending on the use of the skin material.
An example of a skin material for a crash pad is one in which a=25 mm and b=c=7 mm.

このようにしてなる表皮材１８は、発泡体成形
時に、位置決め用中空突部２２を発泡成形型の突
部及び凹部に嵌合させて発泡成形型に配置され
る。そして、表皮材１８内にウレタンフオーム原
料等の発泡体形成原料が注入され、発泡体が表皮
材と一体となつて形成された後に、前記中空突部
２２が切除される。 The skin material 18 thus formed is placed in a foam mold by fitting the positioning hollow protrusions 22 into the protrusions and recesses of the foam mold during foam molding. Then, a foam forming raw material such as a urethane foam raw material is injected into the skin material 18, and after the foam is formed integrally with the skin material, the hollow protrusion 22 is cut off.

（考案の効果）この考案は、熱可塑性プラスチツク製の一体発
泡用表皮材において、発泡成形型への配置時の位
置決め用中空突部を中空角柱形形状としたもの
で、その中空角柱形状としたことによつて、表皮
材成形用型からの表皮材の脱型時に、位置決め用
中空突部の反転を生じにくくしたのである。(Effects of the invention) This invention is a thermoplastic plastic integrally foamed skin material in which the hollow protrusion for positioning when placed in a foam mold is shaped into a hollow prismatic shape; In particular, when the skin material is removed from the mold for molding the skin material, the hollow protrusion for positioning is less likely to be reversed.

従つて、この考案によれば、表皮材を発泡成形
型に配置する前に、位置決め用中空突部の反転を
直す必要が殆どなくなり、作業が簡略となる。 Therefore, according to this invention, there is almost no need to correct the inversion of the positioning hollow protrusion before placing the skin material in the foaming mold, which simplifies the work.

又、位置決め用中空突部が角柱形状であること
から、発泡成形型への配置位置の精度が向上する
利点もある。 Further, since the positioning hollow protrusion has a prismatic shape, there is also an advantage that the accuracy of the positioning position in the foaming mold is improved.

[Brief explanation of the drawing]

第１図及び第２図はこの考案一実施例に関し、
第１図は表皮材の要部斜視図、第２図は表皮材の
平面であり、第３図及び第４図は従来品に関し、
第３図は表皮材の平面図、第４図は表皮材を発泡
成形型に配置する際の要部斜視図である。２２……位置決め用中空突部。 Figures 1 and 2 relate to an embodiment of this invention.
Figure 1 is a perspective view of the main parts of the skin material, Figure 2 is a plane view of the skin material, and Figures 3 and 4 are related to conventional products.
FIG. 3 is a plan view of the skin material, and FIG. 4 is a perspective view of essential parts when the skin material is placed in the foam mold. 22...Hollow protrusion for positioning.

Claims

[Scope of utility model registration request]

A skin material for integral foaming made of thermoplastic plastic and having a hollow protrusion for positioning when placed in a foam mold, characterized in that the protrusion has a hollow prismatic shape.