JP3159275B2 - Powder slush molding method for skin material - Google Patents
Powder slush molding method for skin materialInfo
- Publication number
- JP3159275B2 JP3159275B2 JP2637393A JP2637393A JP3159275B2 JP 3159275 B2 JP3159275 B2 JP 3159275B2 JP 2637393 A JP2637393 A JP 2637393A JP 2637393 A JP2637393 A JP 2637393A JP 3159275 B2 JP3159275 B2 JP 3159275B2
- Authority
- JP
- Japan
- Prior art keywords
- skin material
- molding
- molding die
- powder
- rotation
- 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 - Fee Related
Links
Landscapes
- Moulding By Coating Moulds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、樹脂パウダーを収容し
たパウダーボックスと、所定温度に加熱された状態に在
る成形用金型とを、成形用金型でパウダーボックスの開
口端を塞いだ状態で回転せしめ、樹脂パウダーを成形用
金型の成形面に接触、溶融させて表皮材を得るようにし
た表皮材のパウダースラッシュ成形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder box containing a resin powder and a molding die heated to a predetermined temperature, the opening end of the powder box being closed by the molding die. The present invention relates to a powder slush molding method for a skin material, which is rotated in a state, and a resin material is brought into contact with a molding surface of a molding die and melted to obtain a skin material.
【０００２】[0002]
【従来の技術】従来、かかる成形方法は、たとえば特開
平２−２０４０１０号公報等により既に知られている。2. Description of the Related Art Conventionally, such a molding method has been already known, for example, from Japanese Patent Application Laid-Open No. 2-204010.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記従来の
ものは、均等な肉厚の表皮材を得るための成形方法であ
るが、合成樹脂から成る表皮材を成形するにあたって、
製品によっては表皮材の一部の肉厚を他の部分よりも厚
くしたいと言う要望があり、上記従来のものは、そのよ
うな要望には応え得ない。The above-mentioned conventional method is a molding method for obtaining a skin material having a uniform thickness.
Depending on the product, there is a demand that the thickness of a part of the skin material be thicker than the other parts, and the above-mentioned conventional one cannot meet such a demand.
【０００４】そこで、特開平４−２８８２０９号公報に
開示された技術のように、成形用金型の一部を他の部分
よりも高温度に加熱することにより該高温加熱部への樹
脂パウダー付着量を他の部分よりも多くして、部分的に
肉厚となった表皮材を得るようにしたものもあるが、成
形用金型の一部が高温度となっていることにより表皮材
が部分的に変色し、実用化が困難であるだけでなく、成
形用金型の一部を他の部分よりも高温度に制御するのが
困難である。Thus, as in the technique disclosed in Japanese Patent Application Laid-Open No. 4-288209, a part of the molding die is heated to a higher temperature than the other part, so that the resin powder adheres to the high-temperature heating part. There is also a case where the amount is made larger than the other parts to obtain a partially thick skin material, but the skin material is partially Not only is it partially discolored and difficult to put to practical use, but it is also difficult to control a part of the molding die to a higher temperature than other parts.
【０００５】本発明は、かかる事情に鑑みてなされたも
のであり、部分的に厚肉とした表皮材がその部分的な変
色を回避して簡単に得られるようにした表皮材のパウダ
ースラッシュ成形方法を提供することを目的とする。The present invention has been made in view of the above circumstances, and a powder slush molding of a skin material in which a partially thick skin material is easily obtained by avoiding the partial discoloration. The aim is to provide a method.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明によれば、表皮材の一部を厚肉部として形成
するにあたって、成形用金型およびパウダーボックスの
回転途中で、成形用金型の成形面のうち前記厚肉部に対
応する部分が下方位置となったときに、成形用金型およ
びパウダーボックスの回転を所定時間だけ一旦停止させ
る。According to the present invention, in order to achieve the above object, according to the present invention, when a part of a skin material is formed as a thick portion, a molding die and a powder box are rotated during rotation. When the portion corresponding to the thick portion of the molding surface of the forming die is at the lower position, the rotation of the forming die and the powder box is temporarily stopped for a predetermined time.
【０００７】[0007]
【実施例】以下、図面により本発明の一実施例について
説明する。An embodiment of the present invention will be described below with reference to the drawings.
【０００８】図１ないし図４は本発明の一実施例を示す
ものであり、図１は本発明方法で得られた表皮材の正面
図、図２は図１の２−２線断面図、図３は成形装置の縦
断面図、図４は成形過程を順次示す図である。1 to 4 show an embodiment of the present invention. FIG. 1 is a front view of a skin material obtained by the method of the present invention, FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is a longitudinal sectional view of the molding apparatus, and FIG. 4 is a view sequentially showing the molding process.
【０００９】先ず図１および図２において、この表皮材
５は、乗用車両におけるインストルメントパネル用とし
て成形されるものであり、フロント・ウインド越しに光
および熱を受ける部分の強度を高くすべく、範囲Ｗで示
す上部が厚肉部５ａとしてその厚みＴａを他の部分の厚
みＴよりも厚くして形成される。First, in FIGS. 1 and 2, this skin material 5 is molded for use in an instrument panel of a passenger vehicle. In order to increase the strength of a portion that receives light and heat through a front window, The upper portion indicated by the range W is formed as the thick portion 5a with the thickness Ta being larger than the thickness T of the other portions.
【００１０】図３において、表皮材５の成形にあたって
は、ポリ塩化ビニル等の合成樹脂から成るたとえば粒径
１４０μｍ程度の樹脂パウダー６を内部に収納したパウ
ダーボックス７と、このパウダーボックス７にその開口
端を塞ぐようにして重ね合わされる成形用金型８とを準
備する。成形用金型８は、内面に成形面８ａを有してニ
ッケルや銅等により電鋳法で製作される。この成形用金
型８は、パウダーボックス７の開口端に結着される保持
フレーム１０に、その保持フレーム１０に設けられた複
数の支持脚１１…によって固定的に支持される。而して
パウダーボックス７の開口端を成形用金型８で塞ぐよう
にして相互に結合された成形用金型８およびパウダーボ
ックス７は、成形用金型８をたとえば２３０〜２５０°
Ｃに加熱した状態で、回転軸１２を中心として回転せし
められる。In FIG. 3, when forming the skin material 5, a powder box 7 containing a resin powder 6 made of a synthetic resin such as polyvinyl chloride and having a particle size of about 140 μm, for example, and an opening in the powder box 7 are formed. A molding die 8 to be overlapped so as to close the end is prepared. The molding die 8 has a molding surface 8a on the inner surface and is manufactured by electroforming with nickel, copper, or the like. The molding die 8 is fixedly supported by a plurality of support legs 11 provided on the holding frame 10 attached to the opening end of the powder box 7. Thus, the molding die 8 and the powder box 7 which are connected to each other so as to close the opening end of the powder box 7 with the molding die 8, make the molding die 8 e.g.
C is rotated about the rotating shaft 12 while being heated to C.
【００１１】図４において、表皮材５の成形にあたって
は、先ず樹脂パウダー６を収容したパウダーボックス７
の開口端を成形用金型８で塞いだ状態で、該パウダーボ
ックス７および成形用金型８を、図４（ａ）〜図４
（ｄ）で示すように、回転軸１２を中心としてたとえば
４秒間で正転方向に１回転させる。これにより樹脂パウ
ダー６は成形面８ａに接触して溶融し、均等厚の溶融成
形膜が成形面８ａに形成される。In FIG. 4, when forming the skin material 5, first, a powder box 7 containing a resin powder 6 is formed.
The powder box 7 and the molding die 8 are connected to each other in a state where the opening end of the
As shown in (d), the motor is rotated once in the forward direction around the rotating shaft 12 in, for example, four seconds. As a result, the resin powder 6 comes into contact with the molding surface 8a and melts, and a molten molded film having a uniform thickness is formed on the molding surface 8a.
【００１２】この正転方向の１回転後、図４（ｅ）〜図
４（ｈ）で示すように、パウダーボックス７および成形
用金型８を逆転方向に１回転させる。しかも該逆転方向
への回転途中で、成形面８ａのうち表皮材５の厚肉部５
ａに対応する部分が下方位置となった状態、すなわち図
４（ｇ）の状態で、成形用金型８およびパウダーボック
ス７の回転を所定時間たとえば２〜３秒間だけ一旦停止
させる。After one rotation in the normal rotation direction, the powder box 7 and the molding die 8 are rotated once in the reverse rotation direction as shown in FIGS. 4 (e) to 4 (h). Moreover, during the rotation in the reverse direction, the thick portion 5 of the skin material 5 of the molding surface 8a is formed.
4 (g), the rotation of the molding die 8 and the powder box 7 is temporarily stopped for a predetermined time, for example, 2 to 3 seconds.
【００１３】ところで、成形面８ａのうち下方位置に在
る部分には、樹脂パウダー６がその自重により密接し、
成形面８ａから熱が伝わり易いので、樹脂パウダー６の
成形面８ａへの接触、溶融が促進されるものであり、上
述のように、成形用金型８およびパウダーボックス７を
その回転途中で一旦停止すると、成形面８ａのうち表皮
材５の厚肉部５ａに対応する部分には、樹脂パウダー６
の重量がかかる時間が他の部分よりも長くなることによ
り、その部分での樹脂パウダー６の溶融量が他の部分よ
りも多くなる。したがって逆転方向の回転終了後に、成
形面８ａ上に形成されている溶融成形膜の冷却・固化に
よる成形終了時には、部分的に厚肉部５ａを有した表皮
材５を得ることが可能となる。By the way, the resin powder 6 is in close contact with the lower part of the molding surface 8a due to its own weight.
Since heat is easily transmitted from the molding surface 8a, the contact and melting of the resin powder 6 with the molding surface 8a are promoted. As described above, the molding die 8 and the powder box 7 are temporarily rotated during the rotation. When stopped, the resin powder 6 is applied to a portion of the molding surface 8a corresponding to the thick portion 5a of the skin material 5.
When the weight of the resin powder 6 is longer than that of the other portions, the amount of the resin powder 6 melted at that portion becomes larger than that of the other portions. Therefore, after the rotation in the reverse direction is completed, when the molding by cooling and solidifying the melt-formed film formed on the molding surface 8a is completed, the skin material 5 having a partially thick portion 5a can be obtained.
【００１４】而して本発明者の実験によると、たとえば
厚肉部５ａの厚みＴａを１．０〜１．３ｍｍとし、他の
部分の厚みＴを０．５〜０．７ｍｍとした表皮材５を得
ることができた。According to an experiment conducted by the present inventor, for example, a skin material in which the thickness Ta of the thick portion 5a is 1.0 to 1.3 mm and the thickness T of the other portions is 0.5 to 0.7 mm. 5 could be obtained.
【００１５】上記実施例では、成形用金型８およびパウ
ダーボックス７を正転方向に１回転させた後の逆転途中
でその回転を一旦停止するようにしたが、それには限ら
ず、正転方向のみの回転を行なうようにするとともにそ
の回転途中で一旦停止するようにしてもよい。In the above embodiment, the molding die 8 and the powder box 7 are rotated once in the normal rotation direction and then temporarily stopped during the reverse rotation. However, the present invention is not limited to this. Only the rotation may be performed, and the rotation may be temporarily stopped during the rotation.
【００１６】以上、本発明の実施例を詳述したが、本発
明は上記実施例に限定されるものではなく、特許請求の
範囲に記載された本発明を逸脱することなく種々の設計
変更を行なうことが可能である。Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.
【００１７】[0017]
【発明の効果】以上のように本発明によれば、表皮材の
一部を厚肉部として形成するにあたって、成形用金型お
よびパウダーボックスの回転途中で、成形用金型の成形
面のうち前記厚肉部に対応する部分が下方位置となった
ときに、成形用金型およびパウダーボックスの回転を所
定時間だけ一旦停止させるので、必要最小限の樹脂パウ
ダーにより表皮材の一部を厚肉に形成することが容易に
可能となり、金型の一部を高温度にする必要がないので
表皮材が部分的に変色することもない。As described above, according to the present invention, when a part of the skin material is formed as a thick portion, a part of the molding surface of the molding die is formed during rotation of the molding die and the powder box. When the portion corresponding to the thick portion is at the lower position, the rotation of the molding die and the powder box is temporarily stopped for a predetermined time, so that a part of the skin material is thickened with a minimum necessary resin powder. And the skin material does not partially discolor because there is no need to raise the temperature of a part of the mold.
【図１】本発明方法で得られた表皮材の正面図である。FIG. 1 is a front view of a skin material obtained by the method of the present invention.
【図２】図１の２−２線断面図である。FIG. 2 is a sectional view taken along line 2-2 of FIG.
【図３】成形装置の縦断面図である。FIG. 3 is a longitudinal sectional view of a molding device.
【図４】成形過程を順次示す図である。FIG. 4 is a view sequentially showing a molding process.
５ 表皮材 ５ａ 厚肉部 ６ 樹脂パウダー ７ パウダーボックス ８ 成形用金型 ８ａ 成形面 Reference Signs List 5 skin material 5a thick part 6 resin powder 7 powder box 8 molding die 8a molding surface
Claims (2)
ボックス（７）と、所定温度に加熱された状態に在る成
形用金型（８）とを、成形用金型（８）でパウダーボッ
クス（７）の開口端を塞いだ状態で回転せしめ、樹脂パ
ウダー（６）を成形用金型（８）の成形面（８ａ）に接
触、溶融させて表皮材（５）を得るようにした表皮材の
パウダースラッシュ成形方法において、表皮材（５）の
一部を厚肉部（５ａ）として形成するにあたって、成形
用金型（８）およびパウダーボックス（７）の回転途中
で、成形用金型（８）の成形面（８ａ）のうち前記厚肉
部（５ａ）に対応する部分が下方位置となったときに、
成形用金型（８）およびパウダーボックス（７）の回転
を所定時間だけ一旦停止させることを特徴とする表皮材
のパウダースラッシュ成形方法。1. A powder box (7) containing a resin powder (6) and a molding die (8) heated to a predetermined temperature are separated by a powder box (8). (7) The skin is rotated with the open end closed, and the resin powder (6) is brought into contact with the molding surface (8a) of the molding die (8) and melted to obtain a skin material (5). In the method of powder slush molding of a material, when a part of the skin material (5) is formed as a thick portion (5a), the molding die (8) and the molding die (7) are rotated during the rotation. When the portion corresponding to the thick portion (5a) in the molding surface (8a) of (8) is at the lower position,
A powder slush molding method for a skin material, wherein the rotation of the molding die (8) and the powder box (7) is temporarily stopped for a predetermined time.
ス（７）を正転方向に１回転させた後に、逆転方向に１
回転させる途中でその回転を所定時間だけ一旦停止させ
ることを特徴とする請求項１記載の表皮材のパウダース
ラッシュ成形方法。2. The molding die (8) and the powder box (7) are rotated once in the normal direction and then rotated in the reverse direction.
2. The powder slush molding method for a skin material according to claim 1, wherein the rotation is temporarily stopped for a predetermined time during the rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2637393A JP3159275B2 (en) | 1993-02-16 | 1993-02-16 | Powder slush molding method for skin material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2637393A JP3159275B2 (en) | 1993-02-16 | 1993-02-16 | Powder slush molding method for skin material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06238685A JPH06238685A (en) | 1994-08-30 |
| JP3159275B2 true JP3159275B2 (en) | 2001-04-23 |
Family
ID=12191713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2637393A Expired - Fee Related JP3159275B2 (en) | 1993-02-16 | 1993-02-16 | Powder slush molding method for skin material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3159275B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101787291B1 (en) * | 2016-12-27 | 2017-10-18 | 한국가스공사 | Drawing apparatus for phc pile and drawing method for for phc pile thereof |
| KR101985786B1 (en) * | 2016-07-22 | 2019-06-14 | (주)아리터 | Method for Raising and Connecting the Pile and Basement Pile Manufacturing Method using the Same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009018612A (en) * | 2007-07-10 | 2009-01-29 | Toyoda Gosei Co Ltd | Vehicular center cluster panel |
-
1993
- 1993-02-16 JP JP2637393A patent/JP3159275B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101985786B1 (en) * | 2016-07-22 | 2019-06-14 | (주)아리터 | Method for Raising and Connecting the Pile and Basement Pile Manufacturing Method using the Same |
| KR101787291B1 (en) * | 2016-12-27 | 2017-10-18 | 한국가스공사 | Drawing apparatus for phc pile and drawing method for for phc pile thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06238685A (en) | 1994-08-30 |
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