JPH01317741A - Auxiliary plug molding method in plastic molding - Google Patents
Auxiliary plug molding method in plastic moldingInfo
- Publication number
- JPH01317741A JPH01317741A JP14942788A JP14942788A JPH01317741A JP H01317741 A JPH01317741 A JP H01317741A JP 14942788 A JP14942788 A JP 14942788A JP 14942788 A JP14942788 A JP 14942788A JP H01317741 A JPH01317741 A JP H01317741A
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary plug
- material sheet
- female mold
- molded product
- wall thickness
- 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
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000465 moulding Methods 0.000 title description 4
- 238000010137 moulding (plastic) Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 22
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000007666 vacuum forming Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分ＩＩＦ） 本発明はプラスチックの熟成形法、例えば。[Detailed description of the invention] (Industrial use portion IIF) The present invention relates to a method for aging plastics, e.g.
ｐａ軍を使用する真空成形中圧ｍ！２！気圧成形におい
て利用される補助プラグ成形法（プラグアシスト法）Ｏ
＆ｊＬに関する。Vacuum forming medium pressure m using PA military! 2! Auxiliary plug forming method (plug assist method) used in air pressure forming
Regarding &jL.
（従来の技術）
＃１型を使用する真空成形子圧縮空気圧成形によシ深絞
シの成形品を得る場合は、一般的に成形品Ｏ肉厚が不均
一にな〕中すい問題がある。(Prior art) When obtaining a deep-drawn molded product by compressed air pressure forming using a vacuum forming device using mold #1, there is generally a problem that the wall thickness of the molded product becomes uneven and that the molded product is hollow. .
従来、とＯ問題を解決する一手段として５ｆＸｃｓ図に
示すように、熱可胆性樹脂の材料シート（２）を−旦補
助プラグ（３）によって予張してから成形する補助プラ
グ成形法が公知である。Conventionally, as a means of solving the O problem, there has been an auxiliary plug molding method in which a thermoplastic resin material sheet (2) is first pre-stretched with an auxiliary plug (3) and then molded, as shown in the 5fXcs diagram. It is publicly known.
（発明が解決しようとする４Ｗ１）
従来の補助プラグ成形法によれば、比較的均一な肉厚の
成形品（４）を得ることが可能である。(4W1 to be solved by the invention) According to the conventional auxiliary plug molding method, it is possible to obtain a molded product (4) with a relatively uniform wall thickness.
しかし、よ〕詳しく検査すると、第４図に示すように、
予張工程で補助プラグ（３）と接触する部位（４ａ）の
肉厚が他の部位の肉厚に比べて僅かに大きくなることが
避けられない、そζで本発明は、補助プラグ成形におい
て、成形品における補助プラグの接触した部位と他の部
位の肉厚の不均一を解消して成形性を向上せしめること
を目的とする。However, upon closer inspection, as shown in Figure 4,
It is inevitable that the wall thickness of the part (4a) that contacts the auxiliary plug (3) in the pre-stretching process becomes slightly larger than the wall thickness of other parts. The object of the present invention is to improve moldability by eliminating unevenness in wall thickness between the part of the molded product that is in contact with the auxiliary plug and the other parts.
（１１１題を解決するための手段）
本発明は上記目的を達成するために案出されたもので、
補助プラグによる材料シートの予張工程において、補助
プラグを回転させることを特徴とするものである。(Means for solving problem 111) The present invention was devised to achieve the above object, and
In the process of pre-tensioning the material sheet using the auxiliary plug, the auxiliary plug is rotated.
（作 用）
従来の補助プラグ成形法によって得られた成形品（４）
において、補助プラグ（３）と接触する部位（４ａ）の
肉厚が他の部位の肉厚に比べて僅かく大きくなるのは、
材料シート（２）において補助ブラダ（３）と接触する
部位がその予張時の密着によりて摩擦を生じるのですベ
シにくくなって伸びを抑えられることが主な原因である
。従って、予張時の補助プラグ（３）と材料シート（２
）の接触部の摩擦を減じて材料シー［２）Ｏすベシをよ
くすれば伸びが抑えられることもなく肉厚が均一な成形
品を得るととができる。本発明によれば、材料シートの
予張時に１補助ブツダが回転す６ので、補助プラグと材
料シートが密着せず、従って、補助プラグと材料シート
間の摩擦が減少するものである。(Function) Molded product obtained by conventional auxiliary plug molding method (4)
The reason why the thickness of the part (4a) that contacts the auxiliary plug (3) is slightly larger than that of other parts is because
The area of the material sheet (2) that comes into contact with the auxiliary bladder (3) causes friction due to its close contact during pre-tensioning.The main cause is that it becomes difficult to bend and elongation is suppressed. Therefore, during pre-tensioning, the auxiliary plug (3) and the material sheet (2
) By reducing the friction at the contact area and improving the material sheath [2), it is possible to obtain a molded product with uniform wall thickness without suppressing elongation. According to the present invention, since one auxiliary pot rotates 6 when the material sheet is pretensioned, the auxiliary plug and the material sheet do not come into close contact with each other, and therefore the friction between the auxiliary plug and the material sheet is reduced.
（実施例） 実施例について第１図及び第２図を参照して説明する。(Example) An embodiment will be described with reference to FIGS. 1 and 2.
まず、雌ｍ（１）の上に熱可塑性樹脂材料シート（２）
を少ランプした状態で配して加熱軟化させ、次に、第１
図に示すように、ｊｔｔｍ（１）Ｏ内部に補助プラグ（
３）を下降させて材料シート（２）を予張する。この予
張工程において補助プラグ（３）をその中心軸線を中心
にして適宜回転数で回転させる。この予張工程の終了後
は、材料シート（２）と雌Ｍｌ （１）の間の空間（５
）を真空にして材料シー）（２）を大気圧によって雌ｍ
１（１）Ｋ圧着させて成形し、その後、冷却して硬化さ
せてから真空をきって雌型（１）から取）出せば、第２
図に示すように、肉厚が均一な成形品（４）を得ること
ができる。First, place the thermoplastic resin material sheet (2) on top of the female m (1).
Place it under a slight lamp and heat it to soften it, then apply the first
As shown in the figure, there is an auxiliary plug (
3) to pre-tension the material sheet (2). In this pre-tensioning step, the auxiliary plug (3) is rotated about its central axis at an appropriate number of revolutions. After this pre-tensioning step, the space (5) between the material sheet (2) and the female Ml (1) is
) is evacuated and the material sheet (2) is heated to a female m by atmospheric pressure.
1 (1) K press and mold, then cool and harden, then turn off the vacuum and take out from the female mold (1).
As shown in the figure, a molded article (4) with uniform wall thickness can be obtained.
尚、上記の実施例は真空成形の場合に適用したものであ
るが、勿論、圧縮空気圧成形ＯＮｓ会も同様に適用可能
である。Although the above embodiment is applied to vacuum forming, it is of course applicable to compressed air pressure forming ONS in the same way.
（発明の効果）
本発明は上述したよう＆ＣＷ成されるので、補助プラグ
によ）材料シートを予張した場合でも、従来のごとく成
形品において補助プラグと接触した部位の肉厚が他Ｏ部
位の肉厚に比べて僅かに大きくなるということがなく、
成形品全体の肉厚が均一になって成形性が向上する効果
がある。(Effects of the Invention) Since the present invention is made by &CW as described above, even when the material sheet is pre-stretched (by the auxiliary plug), the wall thickness of the part of the molded product that comes into contact with the auxiliary plug is different from that of the other O part as in the conventional case. It does not become slightly larger than the wall thickness of the
This has the effect of making the thickness of the entire molded product uniform and improving moldability.
１１１１図は本発明実施例の材料シートの予張工程を示
す断面、＠２図は本発明実施例で得られた成形品ｏｖＲ
ｇ図、第３図は従来例の材料シートの予張工程を示す断
面図、ｇ４図は従来例で得られた成形品ＯＭ面図である
。
（１）−・・雌型、（２）−・・材料シート、（３）・
・・補助プラグ、（４・・・成形品、（５）・・・空間
。
第１図
第３図
第４図
工Figure 1111 is a cross section showing the pre-stretching process of the material sheet of the example of the present invention, and Figure @2 is the molded product ovR obtained in the example of the present invention.
Fig. g and Fig. 3 are cross-sectional views showing the pre-tensioning process of the material sheet in the conventional example, and Fig. g4 is an OM view of the molded product obtained in the conventional example. (1)--Female mold, (2)--Material sheet, (3)-
... Auxiliary plug, (4... Molded product, (5)... Space. Figure 1 Figure 3 Figure 4 Construction
Claims (1)
プラグを回転させることを特徴とする補助プラグ成形法
。An auxiliary plug forming method characterized by rotating the auxiliary plug during the pre-stretching process of the material sheet using the auxiliary plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14942788A JPH01317741A (en) | 1988-06-17 | 1988-06-17 | Auxiliary plug molding method in plastic molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14942788A JPH01317741A (en) | 1988-06-17 | 1988-06-17 | Auxiliary plug molding method in plastic molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01317741A true JPH01317741A (en) | 1989-12-22 |
| JPH0564577B2 JPH0564577B2 (en) | 1993-09-14 |
Family
ID=15474871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14942788A Granted JPH01317741A (en) | 1988-06-17 | 1988-06-17 | Auxiliary plug molding method in plastic molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01317741A (en) |
-
1988
- 1988-06-17 JP JP14942788A patent/JPH01317741A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0564577B2 (en) | 1993-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01317741A (en) | Auxiliary plug molding method in plastic molding | |
| JP3280700B2 (en) | Manufacturing method of laminated rubber products | |
| JPH01317740A (en) | Auxiliary plug molding method in plastic molding | |
| JP2767388B2 (en) | Plastic molding method and molding apparatus | |
| JP2984874B2 (en) | Sheet inlaying method for foam molded product surface | |
| JP2797220B2 (en) | Method and apparatus for manufacturing synthetic resin molded product | |
| JPH0114014B2 (en) | ||
| JPH01317738A (en) | Auxiliary plug molding method in plastic molding and auxiliary plug | |
| US5026267A (en) | Apparatus for forming thermoplastic material | |
| JPS6331732A (en) | Thermoforming of vessel and the like | |
| JPH01317739A (en) | Auxiliary plug molding method in plastic molding | |
| JPH03138114A (en) | Manufacture of stamping molded product | |
| RU2807475C1 (en) | Method for manufacturing plastic elements with convex contour of a given shape | |
| JPH0730339Y2 (en) | Mold for fiber reinforced composite material | |
| JPH0245578B2 (en) | SEIKEITENSHAHOHO | |
| JP2869615B2 (en) | Method and apparatus for compressed air molding of plastic molded products | |
| JPH03147819A (en) | Manufacture of diaphragm | |
| JPS63111032A (en) | Deep draw packing method | |
| JPH046890Y2 (en) | ||
| JPH0483630A (en) | Manufacture of skin member | |
| JPS6216126A (en) | Forming of sheet material | |
| JPH02220815A (en) | Manufacture of plastic molded product with skin material | |
| JPH0235660B2 (en) | CHIJIMIMOYONONETSUKASOSEIGOSEIJUSHIFUIRUMUOYOBISEIZOHO | |
| JPS6456534A (en) | Molding method of flange made of fiber-reinforced plastic | |
| JPH06101878B2 (en) | Method of manufacturing a dust cap for a speaker |