JPS5946767B2 - Plastic sheet molding method and molding device - Google Patents
Plastic sheet molding method and molding deviceInfo
- Publication number
- JPS5946767B2 JPS5946767B2 JP9974277A JP9974277A JPS5946767B2 JP S5946767 B2 JPS5946767 B2 JP S5946767B2 JP 9974277 A JP9974277 A JP 9974277A JP 9974277 A JP9974277 A JP 9974277A JP S5946767 B2 JPS5946767 B2 JP S5946767B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- plugs
- molding
- gap
- plug
- 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)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、冷蔵庫のプラスチック製内箱等を成形する方
法及び装置に関し、特に冷凍室、冷蔵庫等を一枚のシー
トで形成することに係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for molding a plastic inner box of a refrigerator, and more particularly to forming a freezer compartment, refrigerator, etc. from a single sheet.
従来においては第１図及び第２図に示すような冷蔵室１
、冷凍室２及び仕切り壁部３を一体に形成した内箱４を
形成するために、第３図に示すようなプラグアシストリ
バースドロップ成形法を用いられている。Conventionally, a refrigerator compartment 1 as shown in Fig. 1 and Fig. 2 is used.
In order to form the inner box 4 in which the freezer compartment 2 and the partition wall 3 are integrally formed, a plug assist reverse drop molding method as shown in FIG. 3 is used.
この成形法に用いる装置は、冷凍室と冷蔵室に相当する
形状の雌型５をチャンバーＴ内に有し、プラスチックシ
ート８を固定するクランプ９、シート８を加熱するヒー
タ１０、チャンバーＴ内に空気を導入する給気孔１１、
チャンバーＴ内の空気を吸引する吸引孔１２、さらに空
気を圧送、吸引する装置（図示せず）を有する。１３は
各室に対応するプラグであり、シート８をヒータ１０に
て加熱し、ヒータ１０を退去したのち空気を給気孔１１
より圧送してシートを予め膨張させ（第３図）、プラグ
１３を型５内に下降し（第４図）、チャンバー７内の空
気を吸引孔１２より吸引してシート８を型５にそわして
内箱４を成形するものである。The device used for this molding method has a female mold 5 in a chamber T with a shape corresponding to a freezing chamber and a refrigerator chamber, a clamp 9 for fixing a plastic sheet 8, a heater 10 for heating the sheet 8, and a female mold 5 in a chamber T. air supply hole 11 for introducing air;
It has a suction hole 12 that suctions the air in the chamber T, and a device (not shown) that pumps and suctions the air. 13 is a plug corresponding to each chamber, which heats the seat 8 with a heater 10, and after leaving the heater 10, air is supplied to the air supply hole 11.
The sheet is inflated in advance by pressure feeding (Fig. 3), the plug 13 is lowered into the mold 5 (Fig. 4), the air in the chamber 7 is sucked through the suction hole 12, and the sheet 8 is placed against the mold 5. Then, the inner box 4 is formed.
この場合、仕切部分３の肉厚が他に比べて薄くなるたみ
、第４図のＡ、Ｂ寸法をＡ寸法がＢ寸法に比べて小さく
なるようにしたり、または第５図のようにシート８の加
熱を仕切部分３に相当する部分が他の部分に比べてより
くなるようにマスク１４にて覆うようにしているがこれ
ら方法では所定肉厚をえるのが困難であつた。In this case, since the wall thickness of the partition part 3 is thinner than the other parts, the A and B dimensions in Figure 4 may be made smaller than the B dimension, or the sheet Although the mask 14 is used to cover the portion corresponding to the partition portion 3 with a mask 14 so that the heating of the portion 8 is heated more than other portions, it is difficult to obtain a predetermined thickness using these methods.
そこで、本発明は上記従来の欠点を解消し、仕切部分を
形成する内箱の肉厚をほぼ一定にする方法及び装置を提
供することを目的とするものである。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and apparatus that eliminates the above-mentioned conventional drawbacks and makes the wall thickness of the inner box that forms the partition portion substantially constant.
以下に本発明の一実施例を第６図を参照しながら詳細に
説明する。An embodiment of the present invention will be described in detail below with reference to FIG.
第６図において第１図〜第５図と同一符号は同一部分、
あるいは相当部分を表わすものである。従来の装置と大
きく異なる点はプラグ装置１５である。In Fig. 6, the same symbols as in Figs. 1 to 5 indicate the same parts.
Or it represents a considerable portion. The major difference from conventional devices is the plug device 15.
プラグ装置１５はベース１６に各室１、２に対応する個
数のプラグＩＴをプラグの対向面の間隙が調整できるよ
うにヒンジ１８にて可傾式に支持してある。１９はプラ
グ１７の反ヒンジ側に取付けたリンク２０をロツド２１
を介して上下動することにより前記間隙を調整する可傾
装置である。The plug device 15 has a base 16 that supports a number of plugs IT corresponding to each of the chambers 1 and 2 in a tiltable manner with a hinge 18 so that the gap between the facing surfaces of the plugs can be adjusted. 19 connects the link 20 attached to the anti-hinge side of the plug 17 to the rod 21
This is a tilting device that adjusts the gap by moving up and down through the tilting device.
次に上記装置による成形方法を説明する。Next, a molding method using the above apparatus will be explained.
シート８の予め膨張までは従来と同様であり、プラグ１
７の下降時に、可傾装置１９によりプラグ対向面間の寸
法をＤからＣになるように、プラグ１７の下降につれて
除々に狭ばめる。この動作によりシート８とプラグ１７
との間の摩擦とスリツプを調整して仕切り部分に引き込
まれるシートの絶対量を増加することによつて仕切り部
分の肉厚を向上できるものである。本発明は上記したよ
うに、プラグをヒンジにて隣り合うプラグの対向面間の
間隙を可動となるように支持し、前記シートを予め膨張
後前記プラグを雌型方向に移動しつつ前記間隙をせばめ
ることを特徴としたもので、次のような効果を有する。The process up to the pre-inflation of the sheet 8 is the same as before, and the plug 1
When the plug 7 is lowered, the tilting device 19 gradually narrows the dimension between the opposing faces of the plug from D to C as the plug 17 lowers. This action causes seat 8 and plug 17 to
By adjusting the friction and slip between the sheets and increasing the absolute amount of sheets drawn into the partition, the wall thickness of the partition can be increased. As described above, the present invention supports a plug using a hinge so as to be movable in the gap between opposing surfaces of adjacent plugs, and after inflating the sheet in advance, moves the plug in the female mold direction to close the gap. It is characterized by narrowing and has the following effects.
（１）本発明の方法及び装置によれば多数個取り深絞り
真空成形の仕切り壁の肉厚の調整がしやすく、所望の肉
厚を得ることができる。（２）また装置としては、従来
の成形機仕様を大巾に変えることなく実施できるため、
成形機費用が安価となる。(1) According to the method and apparatus of the present invention, the thickness of the partition wall in multi-cavity deep drawing vacuum forming can be easily adjusted and a desired thickness can be obtained. (2) Also, since the equipment can be implemented without major changes to the conventional molding machine specifications,
Molding machine costs are low.
（３）真空成形機の一応用例である圧空成形機には、プ
ラグを圧空箱で囲う必要があるが、本発明装置では構成
が単純なため圧空成形機にも応用できる。(3) In a pressure forming machine, which is an application example of a vacuum forming machine, it is necessary to surround the plug with a pressure box, but since the device of the present invention has a simple configuration, it can also be applied to a pressure forming machine.
第１図は冷蔵庫の内箱を示す斜視図、第２図は第１図の
Ｈ−Ｈ′線における断面図、第３図は従来の真空成形装
置の断面図、第４図はその動作の一過程を示す断面図、
第５図は他の従来例を示すヒータ部分の斜視図、第６図
は本発明の一実施例における成形装置の断面図である。
５・・・・・・雌型、８・・・・・・シート、１０・・
・・・・ヒータ、１１・・・・・・給気孔、１２・・・
・・・吸引孔、１７・・・・・・プラグ、１８・・・・
・・ヒンジ、１９・・・・・・可傾装置。Fig. 1 is a perspective view showing the inner box of a refrigerator, Fig. 2 is a sectional view taken along the line H-H' in Fig. 1, Fig. 3 is a sectional view of a conventional vacuum forming device, and Fig. 4 shows its operation. A cross-sectional view showing one process;
FIG. 5 is a perspective view of a heater portion showing another conventional example, and FIG. 6 is a sectional view of a molding apparatus according to an embodiment of the present invention. 5...Female type, 8...Sheet, 10...
... Heater, 11 ... Air supply hole, 12 ...
...Suction hole, 17...Plug, 18...
...Hinge, 19...Tilt device.
Claims (1)
ックシートを加熱するヒータと、前記各室に対応した数
のプラグとからなる成形装置を用い、前記プラグをヒン
ジにて隣り合うプラグの対向面間の間隙を可動となるよ
うに支持し、前記シートを予め膨張させた後、前記プラ
グを前記型方向へ移動させつつ前記間隙をせばめ、前記
シートの上下面間に圧力差を加えて前記シートを前記型
にそわすことを特徴とするプラスチックシートの成形方
法。 ２ 少なくとも二つ以上の室を有する雌型と、プラスチ
ックシートを加熱するヒータと、前記室に対応した数の
プラグと、前記プラグをヒンジにて隣り合うプラグの対
向面間の間隙を可動となるように支持するとともに、前
記シートを予膨張後前記プラグを前記型方向へ移動させ
つつ前記間隙をせばめる可傾装置と、前記シートと下面
間に圧力差を加える装置とからなるプラスチックシート
の成形装置。[Scope of Claims] 1. Using a molding device comprising a female mold having at least two or more chambers, a heater for heating a plastic sheet, and a number of plugs corresponding to the respective chambers, the plugs are attached by hinges. The gap between the facing surfaces of adjacent plugs is supported so as to be movable, and after the sheet is inflated in advance, the gap is narrowed while moving the plug toward the mold, and pressure is applied between the upper and lower surfaces of the sheet. A method for molding a plastic sheet, comprising: warping the sheet against the mold by applying a difference. 2. A female mold having at least two or more chambers, a heater for heating a plastic sheet, a number of plugs corresponding to the chambers, and a hinge that allows the plugs to be movable through the gap between opposing surfaces of adjacent plugs. a tilting device that narrows the gap while supporting the sheet and moving the plug toward the mold after pre-expanding the sheet; and a device that applies a pressure difference between the sheet and the lower surface. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9974277A JPS5946767B2 (en) | 1977-08-19 | 1977-08-19 | Plastic sheet molding method and molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9974277A JPS5946767B2 (en) | 1977-08-19 | 1977-08-19 | Plastic sheet molding method and molding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5433567A JPS5433567A (en) | 1979-03-12 |
| JPS5946767B2 true JPS5946767B2 (en) | 1984-11-14 |
Family
ID=14255457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9974277A Expired JPS5946767B2 (en) | 1977-08-19 | 1977-08-19 | Plastic sheet molding method and molding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946767B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2525651B (en) * | 2014-05-01 | 2018-08-08 | Gr8 Eng Ltd | Blow moulded container and manufacture thereof |
-
1977
- 1977-08-19 JP JP9974277A patent/JPS5946767B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5433567A (en) | 1979-03-12 |
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