JPH01317740A - Auxiliary plug molding method in plastic molding - Google Patents
Auxiliary plug molding method in plastic moldingInfo
- Publication number
- JPH01317740A JPH01317740A JP14942688A JP14942688A JPH01317740A JP H01317740 A JPH01317740 A JP H01317740A JP 14942688 A JP14942688 A JP 14942688A JP 14942688 A JP14942688 A JP 14942688A JP H01317740 A JPH01317740 A JP H01317740A
- 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 18
- 238000000465 moulding Methods 0.000 title description 6
- 238000010137 moulding (plastic) Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 23
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- 231100000895 deafness Toxicity 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 208000016354 hearing loss disease Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はグラスチックの熟成形法、例えば、雌型を使用
する真空成形子圧縮空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）の改良に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a maturing molding method for glass, for example, an auxiliary plug molding method (plug assist method) used in compressed air pressure molding with a vacuum mold using a female mold. Regarding improvements.
（従来の技術）
雌型を使用する真空成形や圧縮空気圧成形によ〉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
になシやすい問題がある。(Prior Art) When obtaining a deep-drawn molded product by vacuum forming or compressed air pressure forming using a female mold, there is generally a problem that the thickness of the molded product tends to be uneven.
従来、との問題を解決する一手段として、第３図に示す
よ５に、熱可塑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。As a means of solving the conventional problem, as shown in Fig. 3, an auxiliary plug forming method is used in which a thermoplastic resin material sheet (2) is first pre-stretched with an auxiliary plug (3) and then molded. is publicly known.
（発明が解決しようとする課題）
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。(Problems 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、よプ詳しく検査すると、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、そこで本発明は、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 purpose of the present invention is to improve moldability by eliminating unevenness in wall thickness between the part of the product in contact with the auxiliary plug and other parts.
（課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
プラグを微振動させることを特徴とするものである。(Means for Solving the Problems) The present invention was devised to achieve the above objects, and
This method is characterized by slightly vibrating the auxiliary plug during the pre-tensioning process of the material sheet using the auxiliary plug.
（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）において補助プラグ（３）と接触する
部位がその予張時の密着によっ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ト（２）のすべ〕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
形品を得ることができる０本発明によれば、材料シート
の予張時に、補助プラグがＷするＯ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)
In this case, the reason why the wall 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 plug (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 of the material sheet (2) and improving the smoothness of the material sheet (2), it is possible to obtain a molded product with uniform wall thickness without suppressing elongation. During pre-tensioning, the auxiliary plug and the material sheet do not come into close contact with each other due to the auxiliary plug W and O, thus reducing the friction between the auxiliary plug and the material sheet.
（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、雌聾（１）の上に熱可履性樹脂材料シート（２）
をクランプした状態で配して加熱軟化させ１次に、第１
図に示すように、雌型（１）の内部に補助プラグ（３）
を下降させて材料シート伐）を予張する。この予張工程
において補助プラグ（３）を適宜な振動数と振幅で微振
動させる。この予張工程の終了後は、材料シート（２）
と＃ｌ ！１ （１）の間の空間（５）を真空にして材
料シート（２）を大気圧によってａｍ（ｔ）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＃ｉ ｍ （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 a thermoplastic resin material sheet (2) on top of the female deafness (1).
placed in a clamped state, heated and softened, and then
As shown in the figure, there is an auxiliary plug (3) inside the female mold (1).
Lower the material sheet to pre-tension it. In this pre-tensioning step, the auxiliary plug (3) is slightly vibrated at an appropriate frequency and amplitude. After completing this pre-stretching process, the material sheet (2)
And #l! 1. Vacuum the space (5) between (1) and press the material sheet (2) with am(t)K under atmospheric pressure to form the material. After that, cool and harden it, then remove the vacuum and #i If the molded product (4) is removed from (1), a molded product (4) with uniform wall thickness can be obtained as shown in FIG.
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、圧縮空気圧成形の場合も同様に適用可能で
ある。Although the above embodiments are applied to vacuum forming, it is of course applicable to compressed air forming.
（発明の効果）
本発明は上述したように構成されるので、補助プラグに
よシ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の部位
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 configured as described above, even if the material sheet is pre-stretched around the auxiliary plug, the wall thickness of the part of the molded product that comes into contact with the auxiliary plug will be lower than that of other parts, as in the conventional case. The thickness of the molded product does not become slightly larger than that of the molded product, and the thickness of the entire molded product becomes uniform, which has the effect of improving moldability.
第１図は本発明実施例の材料シートの予張工程を示す断
面、＠Ｘ図は本発明実施例で得られた成形品の断面図、
第３図は従来例の材料シートの予張工程を示す断面図、
第４図は従来例で得られた成形品の断面図である。
（１）・・・雌１１、（２）−・・材料シー）、（３）
・・・補助ブラダ、（４・・・成形品、（５）・・・空
間。
汀 １ 図
第３図
第４図
ＪユFigure 1 is a cross section showing the pre-tensioning process of a material sheet according to an example of the present invention, Figure @X is a cross-sectional view of a molded product obtained in an example of the present invention,
FIG. 3 is a sectional view showing the pre-stretching process of a conventional material sheet;
FIG. 4 is a sectional view of a molded product obtained in a conventional example. (1)...female 11, (2)--material sea), (3)
... Auxiliary bladder, (4... Molded product, (5)... Space. 1 Figure 3 Figure 4 J unit
Claims (1)
プラグを微振動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 slightly vibrating 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 |
|---|---|---|---|
| JP14942688A JPH066332B2 (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 |
|---|---|---|---|
| JP14942688A JPH066332B2 (en) | 1988-06-17 | 1988-06-17 | Auxiliary plug molding method in plastic molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01317740A true JPH01317740A (en) | 1989-12-22 |
| JPH066332B2 JPH066332B2 (en) | 1994-01-26 |
Family
ID=15474848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14942688A Expired - Lifetime JPH066332B2 (en) | 1988-06-17 | 1988-06-17 | Auxiliary plug molding method in plastic molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066332B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1442866A1 (en) * | 2001-10-30 | 2004-08-04 | Yoshino Kogyosho Co., Ltd. | CONTAINER, AND THERMAL FORMING DEVICE AND THERMAL FORMING METHOD THEREFOR |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6139860B2 (en) | 2011-11-29 | 2017-05-31 | 三菱重工業株式会社 | Electrolytic machining tool and electrolytic machining system |
-
1988
- 1988-06-17 JP JP14942688A patent/JPH066332B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1442866A1 (en) * | 2001-10-30 | 2004-08-04 | Yoshino Kogyosho Co., Ltd. | CONTAINER, AND THERMAL FORMING DEVICE AND THERMAL FORMING METHOD THEREFOR |
| EP1442866A4 (en) * | 2001-10-30 | 2009-11-25 | Yoshino Kogyosho Co Ltd | Container, and thermal forming device and thermal forming method therefor |
| US7762803B2 (en) | 2001-10-30 | 2010-07-27 | Yoshino Kogyosho Co., Ltd. | Container, thermo-molding apparatus and method for thermo-molding the same |
| US7799265B2 (en) | 2001-10-30 | 2010-09-21 | Yoshino Kogyosho Co., Ltd. | Method for thermo-molding a footed and bottomed cylindrical container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH066332B2 (en) | 1994-01-26 |
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