JPS58115275A - Manufacture of box body - Google Patents
Manufacture of box bodyInfo
- Publication number
- JPS58115275A JPS58115275A JP56212877A JP21287781A JPS58115275A JP S58115275 A JPS58115275 A JP S58115275A JP 56212877 A JP56212877 A JP 56212877A JP 21287781 A JP21287781 A JP 21287781A JP S58115275 A JPS58115275 A JP S58115275A
- Authority
- JP
- Japan
- Prior art keywords
- female mold
- mold
- box
- partition
- chambers
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000005192 partition Methods 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 13
- 229920003002 synthetic resin Polymers 0.000 claims description 13
- 239000000057 synthetic resin Substances 0.000 claims description 13
- 238000000465 moulding Methods 0.000 description 7
- 239000006261 foam material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007666 vacuum forming Methods 0.000 description 6
- 239000006260 foam Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Refrigerator Housings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、冷蔵庫等の箱体の製造方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a box for a refrigerator or the like.
従来の冷蔵庫の断熱箱体は冷凍室と冷蔵室を連続して合
成樹脂により一体形成した内箱の前記画室間を仕切る仕
切壁に区画断熱壁を設けたものとして、特公昭４８−２
８７７９号公報に記載する発明があった。これには中子
を合成樹脂発泡材にて作った真空成型加工法において、
中子を金型とその先端部を形成する合成樹脂発泡材にて
形成す２−、、、−
ることによって、前述の欠点を解消することを述べてい
る。しかし、真空成形加工をする時、金型は一定温度に
加熱されるものである。ところが、中子の部分は、加熱
された金型とその先端部の合成樹脂発泡材にて、形成さ
れているため、成型時の中子の温度は、合成樹脂発泡材
の方が金型に比べ低温となシ、成形時の被真空成型材の
伸びに差を生じ、成型品に、歪や境界線にラインが入っ
たりし、品質上問題があった。また、中子の先端部を形
成している合成樹脂発泡材は、真空成型時に中子の上に
載置しているので、シートの伸びが室の大きさＫよって
異なってくるため、いずれか一方に引っばられて傾いた
り、ずれたりする欠点を有していた。The heat insulating box body of a conventional refrigerator is an inner box which is integrally formed with a synthetic resin and has a continuous freezer compartment and a refrigerator compartment, and a partition heat insulating wall is provided on the partition wall that partitions the compartments.
There was an invention described in Publication No. 8779. In this method, the core is made of synthetic resin foam material using a vacuum forming process.
It is stated that the above-mentioned drawbacks can be overcome by forming the core from a synthetic resin foam material that forms the mold and its tip. However, during vacuum forming, the mold is heated to a constant temperature. However, since the core is made of a heated mold and the synthetic resin foam material at its tip, the temperature of the core during molding is higher than that of the synthetic resin foam material. If the temperature is lower than that, there will be a difference in the elongation of the vacuum-formed material during molding, causing quality problems such as distortion and border lines in the molded product. In addition, since the synthetic resin foam material that forms the tip of the core is placed on top of the core during vacuum forming, the elongation of the sheet differs depending on the chamber size K. It had the disadvantage of being pulled to one side, causing it to tilt or shift.
そこで本発明はこのよう々欠点を解消し内箱等の成型の
工数を削減し、かつ、金型製作費用の低減を図り、しか
も、成型品の品質の向上を図り、かつ製造時の不安定要
素を除去し、不良率の低減を図った箱体の製造方法を提
供するものである。Therefore, the present invention eliminates these drawbacks, reduces the number of man-hours for molding the inner box, etc., reduces mold manufacturing costs, improves the quality of the molded product, and improves the stability of the manufacturing process. The present invention provides a method for manufacturing a box body in which elements are removed and the defective rate is reduced.
以下本発明の一実施例を、図を参考に説明する。An embodiment of the present invention will be described below with reference to the drawings.
３ 、望 −・
１は合成樹脂より形成された内箱２を、外箱３内に収容
して、両箱２，３間に発泡断熱材４を充填した断熱箱体
である。この断熱箱体１は図示しないが冷蔵庫に用いら
れるものである。そのため、内箱２は上下２室５，６に
形成され、上室５側に冷却システムの冷却器（図示せず
）が設けられている。壕だ、内箱２は前記２室５，６が
一体に形成されるもので、そのため２室５，６の一体の
仕切壁５ａ、６ａ間に合成樹脂発泡材よシなる区画断熱
壁７があらかじめ設けられるとともに、上室５の奥部の
底面には、前記冷却器で生成された除霜水を集める受皿
８が形成されている。そして、この受皿８は排水パイプ
（図示せず）を介して庫外に除霜水を導ひくものである
。3. Desired 1 is a heat insulating box body in which an inner box 2 made of synthetic resin is housed in an outer box 3, and a foamed heat insulating material 4 is filled between both boxes 2 and 3. Although not shown, this heat insulating box 1 is used for a refrigerator. Therefore, the inner box 2 is formed into two upper and lower chambers 5 and 6, and a cooler (not shown) of the cooling system is provided on the upper chamber 5 side. The inner box 2 is formed by integrally forming the two chambers 5 and 6, and therefore a partition insulation wall 7 made of synthetic resin foam is provided between the integral partition walls 5a and 6a of the two chambers 5 and 6. A saucer 8 is provided in advance and is formed on the bottom of the inner part of the upper chamber 5 to collect the defrosting water generated by the cooler. This saucer 8 guides the defrosting water to the outside of the refrigerator via a drainage pipe (not shown).
次に第２図〜第４図を参考に内箱２の成形を説明すると
、９は器状の雌金型で、各室５，６に対応した凹部９ａ
、９ｂとその底部に真空引き用の空気孔１ｏが多数形成
されている。前記区画断熱壁７は雌金型９の凹部９ａ、
９ｂ間の底部に形成された溝１１及び第５図の如く両側
壁に形成され特開昭５８−１１５２７５＜２）
る一対の突部１２′より成る溝状の支持部１２に着脱自
在に設けられるもので、これによシ雌金型９を２分割す
る。そして、雌金型９の凹部９ｂ側に位置した区画断熱
壁７の面には凹部１３が形成されている。この凹部１３
は前述の受皿８を形成するものである。そして、雌金型
９の上部開口にヒータ１４にて加熱される合成樹脂より
なるシート板１５が設けられている（第２図に示す状態
）。Next, the molding of the inner box 2 will be explained with reference to FIGS. 2 to 4. Reference numeral 9 is a container-shaped female mold, and concave portions 9a corresponding to the respective chambers 5 and 6 are shown.
, 9b and a large number of air holes 1o for vacuuming are formed at the bottom thereof. The partition insulation wall 7 is a recess 9a of the female mold 9,
9b and a pair of protrusions 12' formed on both side walls as shown in FIG. With this, the female mold 9 is divided into two parts. A recess 13 is formed on the surface of the compartment heat insulating wall 7 located on the recess 9b side of the female mold 9. This recess 13
forms the above-mentioned saucer 8. A sheet plate 15 made of synthetic resin heated by a heater 14 is provided in the upper opening of the female mold 9 (as shown in FIG. 2).
そして、雌金型９の空気孔１ｏより空気を引くと、前記
シート板１５は雌金型９に沿って第３図に示すように変
形をする。さらに空気を引くと、第４図に示すようにシ
ート板１５は２室５，６を有した内箱２に形成されるも
のである。Then, when air is drawn through the air hole 1o of the female mold 9, the sheet plate 15 is deformed along the female mold 9 as shown in FIG. When the air is further drawn, the sheet plate 15 is formed into an inner box 2 having two chambers 5 and 6, as shown in FIG.
このとき、前記区画断熱壁７はシート板１５の仕切壁５
ａ、６ａ間と接合して固定されるものである。また、前
記空気孔１ｏのうち一部を区画断熱壁７の凹部１３近傍
に位置させることにより、凹部１３ヘシート板１５がよ
シ密接して形成されるものである。At this time, the partition wall 7 is the partition wall 5 of the sheet board 15.
It is fixed by joining between a and 6a. Further, by locating a portion of the air holes 1o near the recess 13 of the partition heat insulating wall 7, the sheet plate 15 is formed in closer contact with the recess 13.
このように、内箱２の成型と同時に、区画断熱５ペーニ
・
壁７が取付けられるので、この区画断熱壁７に設けられ
た凹部１３にも、シート板１５が沿って成形されるため
、凹部成型後の金型を抜く際の工数の低減、また区画断
熱壁７の成形金型の製作費の低減を図ることができる。In this way, since the compartment insulation wall 7 is installed at the same time as the inner box 2 is molded, the sheet plate 15 is also molded along the recess 13 provided in the compartment insulation wall 7, so that the recess It is possible to reduce the number of man-hours required to remove the mold after molding, and also to reduce the manufacturing cost of the mold for forming the compartment heat insulating wall 7.
しかも、２室の区画部は合成樹脂発泡材より々る区画断
熱壁７だけを型として成型されるため、型温度が一定で
あり、しかも雌金型９との境界は、内箱２の奥面であり
、既にシート板１５が成型されて伸び切った箇所である
ので、型温度の差によって仕切壁５ａ、６ａ部分に歪や
ラインが入ることがなく、高品質の内箱２を提供できる
。Moreover, since the two chamber compartments are molded using only the compartment insulation wall 7 made of synthetic resin foam material, the mold temperature is constant, and the boundary with the female mold 9 is located at the back of the inner box 2. Since this is the area where the sheet plate 15 has already been molded and fully expanded, there will be no distortion or lines in the partition walls 5a and 6a due to the difference in mold temperature, and a high quality inner box 2 can be provided. .
また、区画断熱壁７は、雌金型９に設けた支持部１２に
よって、確実に雌金型９に挾持されており、真空成型時
に、区画断熱壁７が、シート板１５の伸びる際に、室５
，６のいずれの方にも傾くことが々く、確実晩成型が可
能となる。しかも、突起１２′の反区画断熱壁７側に円
弧Ｒを設け、この円弧の接線に、区画断熱壁７の面７′
がくるように、区画断熱壁７の４隅に段部１７を設ける
ことによ６ベー
り室５、室６との角は段がつくことがなく、連続的に成
型され、かつ、円弧が設けであるので、無理な吸引をす
ることなくなだらかに成型ができる。Further, the partition insulation wall 7 is securely held in the female mold 9 by the support part 12 provided on the female mold 9, and when the sheet plate 15 is expanded during vacuum forming, the partition insulation wall 7 is Room 5
, 6, which allows reliable late-forming. In addition, an arc R is provided on the side opposite to the compartment heat insulating wall 7 of the protrusion 12', and a tangent to this arc is connected to the surface 7' of the compartment heat insulating wall 7.
By providing stepped portions 17 at the four corners of the compartment insulation wall 7 so that the angles of the compartment insulation walls 7 come together, the corners with the six-base chambers 5 and 6 are not stepped, but are formed continuously and have circular arcs. This allows for smooth molding without excessive suction.
さらに、このような内箱２を外箱３に組み込にて発泡断
熱材４を充填すると区画断熱壁７の雌金型９の溝に入っ
ていた部分が発泡断熱材４で覆われることになるので、
２室５，６の区画部の強度が増すものである。Furthermore, when such an inner box 2 is assembled into an outer box 3 and filled with foam insulation material 4, the portion of the compartment insulation wall 7 that was in the groove of the female mold 9 will be covered with the foam insulation material 4. So,
This increases the strength of the partitions of the two chambers 5 and 6.
このように本発明は器状に形成された雌金型と、区画断
熱壁とを備え、区画断熱壁を雌金型内に形成された支持
部に着脱自在に嵌合させて雌金型内を複数の室に分割せ
しめ、その後合成樹脂シートを真空成形にて前期複数の
室に沿った箱を形成し、かつ各室の仕切壁間に区画断熱
壁を一体に設けた箱体の製造方法で、従来の方法に比べ
、凹部形成後、成形金型を分割して取出す工数が低減で
きると共に、仕切壁形成の金型費の低減を図９、しかも
、仕切壁は区画断熱壁だけを型として成型されるため、
型温度が全体として一定であり、雌金型との境界は、箱
の奥面であり、既に絞り切った箇７ベ・・
所であるので、型温度の差によって箱の仕切壁面に歪や
ラインが入ることが力＜、高品質の箱を製造できる。ま
た、真空成形時に区画断熱壁が支持部で固定されている
ので、ガタッキによシ真空成形時移動し室の大きさが変
ったりすることがない。As described above, the present invention includes a female mold formed in the shape of a container and a partitioned insulating wall, and the partitioned insulating wall is removably fitted into a support portion formed within the female mold, so that the partitioned insulating wall is removably fitted into the female mold. A method for manufacturing a box body, in which a box is divided into a plurality of chambers, and then a synthetic resin sheet is vacuum-formed to form a box along the plurality of chambers, and a partition insulation wall is integrally provided between the partition walls of each chamber. Compared to the conventional method, it is possible to reduce the man-hours required to divide and take out the molding mold after forming the recess, and also to reduce the mold cost for forming the partition wall. Because it is molded as
The temperature of the mold is constant as a whole, and the boundary with the female mold is at the back of the box, where it has already been squeezed out, so the difference in mold temperature will cause distortion on the partition wall of the box. The power of the line allows us to manufacture high quality boxes. Furthermore, since the compartment heat insulating walls are fixed by the support portions during vacuum forming, there is no chance of looseness or movement during vacuum forming, which would cause the size of the chamber to change.
第１図は本発明の一実施例の方法を採用して製造した断
熱箱の縦断面図、第２図〜第４図は本製造方法の過程を
示す断面図、第５図は第４図Ａ−Ａ′断面図である。
２・・・・・・内箱（箱）、５，６・・・・・・室、７
・・・・・・・断熱壁、９・・・・・・雌金型、１２・
・・・・・支持部、１５・・・・・・合成樹脂シート。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名特開
昭５８−１１５２７５（３）
第１図
１４FIG. 1 is a vertical cross-sectional view of a heat-insulating box manufactured using the method of one embodiment of the present invention, FIGS. 2 to 4 are cross-sectional views showing the process of this manufacturing method, and FIG. It is an AA' cross-sectional view. 2... Inner box (box), 5, 6... Chamber, 7
・・・・・・Insulation wall, 9・・・Female mold, 12・
...Supporting part, 15...Synthetic resin sheet. Name of agent: Patent attorney Toshio Nakao and one other person JP-A-58-115275 (3) Figure 1 14
Claims (1)
熱壁を雌金型内に形成された支持部に着脱自在に嵌合さ
せて雌金型内を複数の室に分割せしめ、その後に合成樹
脂シートを真空成形にて前記複数の室に沿った箱に形成
し、かつ各室の仕切壁間に区画断熱壁を一体に設けた箱
体の製造方法。It is equipped with a female mold formed into a container shape and a compartmental insulating wall, and the compartmental insulating wall is removably fitted into a support portion formed in the female mold to divide the inside of the female mold into a plurality of chambers. A method of manufacturing a box body, in which a synthetic resin sheet is then vacuum-formed to form a box along the plurality of chambers, and partition insulation walls are integrally provided between the partition walls of each chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56212877A JPS58115275A (en) | 1981-12-28 | 1981-12-28 | Manufacture of box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56212877A JPS58115275A (en) | 1981-12-28 | 1981-12-28 | Manufacture of box body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58115275A true JPS58115275A (en) | 1983-07-08 |
Family
ID=16629736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56212877A Pending JPS58115275A (en) | 1981-12-28 | 1981-12-28 | Manufacture of box body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58115275A (en) |
-
1981
- 1981-12-28 JP JP56212877A patent/JPS58115275A/en active Pending
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