JPH06201088A - Outer wrapping material welding method for vacuum heat insulating material - Google Patents
Outer wrapping material welding method for vacuum heat insulating materialInfo
- Publication number
- JPH06201088A JPH06201088A JP5000076A JP7693A JPH06201088A JP H06201088 A JPH06201088 A JP H06201088A JP 5000076 A JP5000076 A JP 5000076A JP 7693 A JP7693 A JP 7693A JP H06201088 A JPH06201088 A JP H06201088A
- Authority
- JP
- Japan
- Prior art keywords
- packaging material
- material container
- outer packaging
- flange
- lid
- 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
Landscapes
- Thermal Insulation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、冷蔵庫等に使用され
る真空断熱材の外包材溶着法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding an outer packaging material for a vacuum heat insulating material used in a refrigerator or the like.
【０００２】[0002]
【従来の技術】従来、真空断熱材の外包材としては、図
５に示すように、パーライトまたはシリカ粉末が充填さ
れた長方形の内包材容器１と、この内包材容器１を収納
する開口部が長方形の凹部２ｂを形成する底壁と側壁と
を有し、その側壁の縁から外向に延びるフランジ２ａを
有する長方形の外包材容器２と、上記フランジ２ａと重
なり、上記外包材容器２の凹部２ｂの開口部を蓋する長
方形の蓋材３とを備えたものがある。上記外包材容器２
は、ポリアクリロニトリル（厚さ２００〜３００μｍ）
とアルミニューム箔（厚さ５〜１０μｍ）とをラミネー
トしたバリヤー性を有するフィルムシートからなり、真
空成形等により上記凹部２ｂを成形している。また、上
記蓋材３は、ポリアクリロニトリル（厚さ５０〜１５０
μｍ）をアルミ蒸着（厚さ５〜１０μｍ）したポリエチ
レンテレフタレート等でラミネートしたものである。2. Description of the Related Art Conventionally, as an outer wrapping material for a vacuum heat insulating material, as shown in FIG. 5, a rectangular inner wrapping material container 1 filled with pearlite or silica powder and an opening for accommodating the inner wrapping material container 1 have been used. A rectangular outer packaging material container 2 having a bottom wall and a side wall forming a rectangular recess 2b and having a flange 2a extending outward from the edge of the side wall, and a recess 2b of the outer packaging material container 2 overlapping the flange 2a. And a rectangular lid member 3 that covers the opening of the. The outer packaging material container 2
Is polyacrylonitrile (thickness 200-300 μm)
And a aluminum foil (thickness 5 to 10 μm) are laminated to form a barrier film film, and the recess 2b is formed by vacuum forming or the like. The lid 3 is made of polyacrylonitrile (thickness 50 to 150).
(.mu.m) is laminated with polyethylene terephthalate or the like deposited by aluminum vapor deposition (thickness 5 to 10 .mu.m).
【０００３】上記従来の真空断熱材の外包材溶着法は、
図６に示すように、上記外包材容器２に内包材容器１を
収納した後、上記蓋材３を上記外包材容器２のフランジ
２ａと重なるようにして、図５における外包材容器２の
凹部２ｂの開口部を蓋する。そして、溶着機の溶着テー
ブル１０に固定された下部溶着レバー１１に上記外包材
容器２の側壁を押接して、図７における上記外包材容器
２のフランジ２ａと蓋材３とが重なる部分の領域Ａ，
Ｂ，Ｃに夫々、上部溶着レバー１２を押し付けて溶着す
る。そして、真空包材機（図示せず）により内包材容器
１内と外包材容器２内との空気を脱気した後、残りの上
記外包材容器２のフランジ２ａと蓋材３とが重なる部分
の領域Ｄを溶着して、真空断熱材を製造している。The above-mentioned conventional method for welding the outer packaging material of the vacuum heat insulating material is as follows.
As shown in FIG. 6, after the inner packaging material container 1 is housed in the outer packaging material container 2, the lid member 3 is overlapped with the flange 2a of the outer packaging material container 2 to form the recess of the outer packaging material container 2 in FIG. Cover the opening of 2b. Then, the side wall of the outer packaging material container 2 is pressed against the lower welding lever 11 fixed to the welding table 10 of the welding machine, and the region where the flange 2a of the outer packaging material container 2 and the lid material 3 overlap with each other in FIG. A,
The upper welding lever 12 is pressed against B and C, respectively, and welded. Then, after the air in the inner packaging material container 1 and the outer packaging material container 2 is deaerated by a vacuum packaging material machine (not shown), the flange 2a of the remaining outer packaging material container 2 and the lid member 3 overlap each other. The region D is welded to manufacture the vacuum heat insulating material.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記従来の
真空断熱材の外包材溶着法では、図７に示すように、上
記外包材容器２のフランジ２ａと蓋材３とが重なる部分
の領域Ａ，Ｂ，Ｃ，Ｄの溶着部分において、外包材容器
２に対する蓋材３の位置ずれによる溶着不良や、蓋材３
の弛みにより外包材容器２のフランジ２ａと蓋材３との
重なる部分の領域Ａ，Ｂ，Ｃ，Ｄの外包材容器２のフラ
ンジ２ａの長さとそれに対応する蓋材３の長さとが一致
せず、シワ１３が発生する。上記シワ１３により溶着部
分にスローリークが発生し、内部の真空度が低下するか
ら、真空断熱材としての断熱能力が低下するという問題
がある。また、上記シワ１３の発生により蓋材３の平面
度が悪いという欠点がある。However, in the conventional method for welding the outer packaging material of the vacuum heat insulating material, as shown in FIG. 7, the area A of the portion where the flange 2a of the outer packaging material container 2 and the lid material 3 overlap each other is shown in FIG. , B, C, and D at the welded portions, the welding failure due to the displacement of the lid material 3 with respect to the outer packaging material container 2, and the lid material 3
The length of the flange 2a of the outer packaging material container 2 and the corresponding length of the lid material 3 in the regions A, B, C, D of the overlapping portion of the flange 2a of the outer packaging material container 2 and the lid material 3 are matched by the slack. No, wrinkles 13 occur. The wrinkle 13 causes a slow leak in the welded portion, and the degree of vacuum inside is lowered, so that there is a problem that the heat insulating ability as the vacuum heat insulating material is lowered. Further, there is a drawback that the flatness of the lid member 3 is poor due to the generation of the wrinkles 13.
【０００５】そこで、この発明の目的は、溶着部分のシ
ワの発生をできるだけ防止して、溶着部分にスローリー
クが発生しない真空断熱材の外包材溶着法を提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for welding a vacuum heat insulating material to an outer packaging material by preventing wrinkles in the welded portion as much as possible and preventing slow leak in the welded portion.
【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、この発明の真空断熱材の外包材溶着法は、断熱材が
充填された内包材容器と、上記内包材容器を収納する凹
部を形成する底壁と側壁を有し、さらに側壁の縁から外
向に延びるフランジを有する外包材容器と、上記外包材
容器の上記フランジと重なり、上記外包材容器の開口部
を蓋する蓋材とからなる真空断熱材の外包材溶着法にお
いて、上記外包材容器のフランジと上記蓋材とを重ね
て、上記フランジと蓋材との重なる部分を数箇所でスポ
ット溶着した後、上記外包材容器のフランジと上記蓋材
との上記重なる部分を全て溶着することを特徴としてい
る。In order to achieve the above object, the method for welding an outer wrapping material of a vacuum heat insulating material according to the present invention comprises an inner wrapping material container filled with a heat insulating material and a recess for accommodating the inner wrapping material container. An outer packaging material container having a bottom wall and a side wall, and further having a flange extending outward from the edge of the side wall, and a lid material that overlaps the flange of the outer packaging material container and covers the opening of the outer packaging material container. In the outer packaging material welding method of the vacuum heat insulating material, the flange of the outer packaging material container and the lid material are overlapped, and spot welding is performed at several places where the flange and the lid material overlap, and then the flange of the outer packaging material container is used. It is characterized in that all of the overlapping portion with the lid material is welded.
【０００７】また、上記外包材容器のフランジと蓋材と
の互いに重なる部分は略矩形をしており、上記重なる部
分の四つの角部を上記外包材容器の上記側壁と上記フラ
ンジとのなす角が大きくなるように変形させて、上記四
つの角部をスポット溶着することが望ましい。Further, the overlapping portion of the flange of the outer packaging material container and the lid member is substantially rectangular, and four corners of the overlapping portion are formed by the side wall of the outer packaging material container and the flange. It is desirable that the four corners are spot-welded by deforming so as to increase.
【０００８】また、上記外包材容器の上記側壁と上記フ
ランジとのなす角を調節する調節手段で調節し、上記重
なる部分の四つの角部を変形させて、上記四つの角部を
スポット溶着することが望ましい。Further, the angle between the side wall and the flange of the outer packaging material container is adjusted by adjusting means, the four corners of the overlapping portion are deformed, and the four corners are spot-welded. Is desirable.
【０００９】[0009]
【作用】上記構成の真空断熱材の外包材溶着法は、断熱
材が充填された内包材容器を収納する外包材容器に、こ
の外包材容器のフランジと重なる蓋材で上記外包材容器
の開口部を蓋し、上記外包材容器のフランジと蓋材との
重なる部分を数箇所でスポット溶着した後、上記外包材
容器のフランジと上記蓋材との上記重なる部分を全て溶
着する。このように、上記蓋材の仮止めにより、蓋材の
弛みが蓋材全体に均等に広がって、シワが偏ることがな
くなると共に、シワの発生が少なくなる。そして、たと
えシワができても溶着部分にスローリークが起こるよう
な大きなシワや複雑なシワになることはない。したがっ
て、上記外包材容器のフランジと蓋材が重なる部分の溶
着部分のシワの発生をできるだけ少なくして、溶着部分
にスローリークが発生するのを防止できると共に、上記
蓋材３の平面度がよくなる。また、上記スポット溶着す
ることにより蓋材が仮止めされるから、上記外包材容器
のフランジと蓋材との重なる部分を溶着するとき、外包
材容器に対する蓋材の位置ずれが起きないから、溶着不
良とならない。したがって、上記溶着時の作業性が向上
すると共に、自動化への対応も容易となる。According to the method for welding the outer packaging material of the vacuum heat insulating material having the above-mentioned structure, the outer packaging material container for accommodating the inner packaging material container filled with the heat insulating material is opened by the lid material which overlaps the flange of the outer packaging material container. After covering the portion and spot welding the overlapping portion of the flange of the outer packaging material container and the lid material at several points, all the overlapping portions of the flange of the outer packaging material container and the lid material are welded. As described above, by temporarily fixing the lid member, the slack of the lid member is evenly spread over the entire lid member, the wrinkles are not biased, and the wrinkles are less likely to occur. And even if wrinkles are formed, they do not become large wrinkles or complicated wrinkles that cause slow leak in the welded portion. Therefore, it is possible to minimize the occurrence of wrinkles in the welded portion in the portion where the flange of the outer packaging material container and the lid material overlap with each other, prevent slow leak from occurring in the welded portion, and improve the flatness of the lid material 3. . In addition, since the lid material is temporarily fixed by spot welding, when the overlapping portion of the flange of the outer packaging material container and the lid material is welded, the lid material is not displaced with respect to the outer packaging material container. Not bad. Therefore, the workability at the time of welding is improved and the automation can be easily dealt with.
【００１０】また、上記外包材容器のフランジと蓋材と
の互いに重なる部分は略矩形をしており、上記重なる部
分の四つの角部を外包材容器の側壁とフランジとのなす
角が大きくなるように変形させて、上記四つの角部をス
ポット溶着した場合、上記蓋材が弛んでいても、蓋材の
溶着部分の長さとそれに対応する外包材容器のフランジ
の溶着部分の長さを略同じとすることができるので、上
記外包材容器のフランジと蓋材とが重なる溶着部分のシ
ワの発生をより少なくできる。Further, the overlapping portion of the flange of the outer packaging material container and the lid member is substantially rectangular, and the four corners of the overlapping portion form a large angle between the side wall of the outer packaging material container and the flange. When the four corners are spot-welded, the length of the welded portion of the lid material and the length of the welded portion of the flange of the outer packaging material container corresponding thereto are approximately the same even if the lid material is loose. Since they can be the same, it is possible to further reduce the occurrence of wrinkles in the welded portion where the flange of the outer packaging material container and the lid material overlap.
【００１１】また、上記外包材容器の側壁とフランジと
のなす角を調節する調節手段で調節し、上記外包材容器
のフランジと蓋材との互いに重なる部分の四つの角部を
変形させて、上記四つの角部をスポット溶着する場合
は、蓋材の弛み方が変っても、それに合わせて外包材容
器の側壁とフランジとのなす角を調節して、蓋材の溶着
部分の長さとそれに対応する外包材容器のフランジの溶
着部分の長さを略同じにできる。したがって、上記蓋材
の弛み方が変っても、上記外包材容器のフランジと蓋材
とが重なる溶着部分のシワの発生を防止できる。Also, the angle between the side wall of the outer packaging material container and the flange is adjusted by adjusting the four corners of the overlapping portion of the flange and the lid material of the outer packaging material container, When spot welding the above four corners, even if the slack of the lid material changes, adjust the angle formed by the side wall and the flange of the outer packaging material container accordingly, and the length of the welded portion of the lid material and that The length of the welded portion of the flange of the corresponding outer packaging material container can be made substantially the same. Therefore, even if the manner of slackening of the lid member changes, it is possible to prevent the occurrence of wrinkles in the welded portion where the flange of the outer packaging material container and the lid member overlap.
【００１２】[0012]
【実施例】以下、この発明の真空断熱材の外包材溶着法
を一実施例により詳細に説明する。EXAMPLES Hereinafter, the method for welding the outer packaging material of the vacuum heat insulating material of the present invention will be described in detail with reference to one embodiment.
【００１３】図１はこの発明の実施例の真空断熱材の構
成を示しており、１はパーライトまたはシリカ粉末が充
填された凹部１ｂを形成する底壁と側壁とを有する長方
形の内包材容器、２は上記内包材容器１を収納する凹部
２ｂを形成する底壁と側壁とを有し、その側壁の縁から
外向に延びるフランジ２ａを有する長方形の外包材容
器、３は上記外包材容器２のフランジ２ａと重なり、上
記外包材容器２の凹部２ｂの開口部を蓋する長方形の蓋
材３である。なお、上記内包材容器１は、その側壁の縁
から外向に延びるフランジ１ａを有しているが、このフ
ランジ１ａは上記外包材容器２のフランジ２ａより小さ
くしている。また、上記外包材容器２は、ポリアクリロ
ニトリル（厚さ２００〜３００μｍ）とアルミニューム
箔（５〜１０μｍ）とをラミネートしたバリヤー性を有
するフィルムシートからなり、真空成形等により上記凹
部２ｂを成形している。上記蓋材３は、ポリアクリロニ
トリル（厚さ５０〜１５０μｍ）をアルミ蒸着（厚さ５
〜１０μｍ）したポリエチレンテレフタレート等でラミ
ネートしたものである。FIG. 1 shows the structure of a vacuum heat insulating material according to an embodiment of the present invention, wherein 1 is a rectangular inner packaging material container having a bottom wall and a side wall forming a recess 1b filled with pearlite or silica powder, Reference numeral 2 denotes a rectangular outer packaging material container having a bottom wall forming a recess 2b for accommodating the inner packaging material container 1 and a side wall, and a flange 2a extending outward from an edge of the side wall, and 3 denotes the outer packaging material container 2. The rectangular lid member 3 overlaps the flange 2a and covers the opening of the recess 2b of the outer packaging material container 2. The inner packaging material container 1 has a flange 1a extending outward from the edge of the side wall of the inner packaging material container 1. The flange 1a is smaller than the flange 2a of the outer packaging material container 2. Further, the outer packaging material container 2 is made of a film sheet having a barrier property obtained by laminating polyacrylonitrile (thickness 200 to 300 μm) and aluminum foil (5 to 10 μm), and the recess 2b is formed by vacuum forming or the like. ing. The lid member 3 is formed by vapor-depositing polyacrylonitrile (thickness: 50 to 150 μm) on aluminum (thickness: 5).
It is laminated with polyethylene terephthalate or the like.
【００１４】図２はスポット溶着機の一部を示し、上記
外包材容器２より大きな平板形状の溶着ベース５の平面
に、上記外包材容器２の四つの側壁を挟んで位置決めす
る断面略台形の板状の位置決めガイド７の端面を固定し
ている。この位置決めガイド７に沿って、上記内包材容
器１を収納した外包材容器２を、外包材容器２の底面が
溶着ベース５の平面に接するように装着する。上記外包
材容器２のフランジ２ａの四つの角部（図２では２箇所
のみを示す）に対応する上記溶着ベース５の位置に、溶
着ベース５の平面に対して垂直方向に延びる調節手段と
しての高さ調整ネジ６ａを螺合している。上記高さ調整
ネジ６ａは、上記外包材容器２のフランジ２ａを所定の
高さまで持ち上げるように高さを調整して、固定用ロッ
クナット６ｂにより固定している。上記高さ調整ネジ６
ａで持ち上げられた外包材容器２のフランジ２ａの四つ
の角部をスポット溶着位置として、このフランジ２ａの
四つの角部を挟むようにスポット溶着ヘッド４を配置し
ている。FIG. 2 shows a part of the spot welding machine, which has a substantially trapezoidal cross-section for positioning the four side walls of the outer packaging material container 2 on the plane of a flat plate-shaped welding base 5 larger than the outer packaging material container 2. The end face of the plate-shaped positioning guide 7 is fixed. The outer packaging material container 2 accommodating the inner packaging material container 1 is mounted along the positioning guide 7 such that the bottom surface of the outer packaging material container 2 is in contact with the plane of the welding base 5. At the position of the welding base 5 corresponding to the four corners (only two locations are shown in FIG. 2) of the flange 2a of the outer packaging material container 2, as an adjusting means extending in a direction perpendicular to the plane of the welding base 5. The height adjusting screw 6a is screwed together. The height adjusting screw 6a is adjusted in height so that the flange 2a of the outer packaging material container 2 is lifted to a predetermined height, and is fixed by a fixing lock nut 6b. Height adjustment screw 6 above
The four corners of the flange 2a of the outer packaging material container 2 lifted by a are set as spot welding positions, and the spot welding head 4 is arranged so as to sandwich the four corners of the flange 2a.
【００１５】上記内包材容器１を収納した外包材容器２
に、上記外包材容器２のフランジ２ａに重なり、外包材
容器２の凹部２ｂの開口部を蓋するように蓋材３を装着
する。このとき、上記外包材容器２のフランジ２ａの四
つの角部は、高さ調整ネジ６ａにより外包材容器２の高
さＨ1より高い位置の高さＨ2まで持ち上げられている。
この高さＨ2を蓋材３の弛み具合によって調整する。す
なわち、図３に示すように、重ね合わせた上記外包材容
器２のフランジ２ａの例えば二つの角部と蓋材３の二つ
の角部３ａ，３ｂとをスポット溶着位置として、外包材
容器２のフランジ２ａのスポット溶着位置の間の実際の
部材の長さＬ1と、蓋材３の二つの角部３ａ，３ｂのス
ポット溶着位置の間の実際の部材の長さＬ2とが略一致
または長さＬ2が長さＬ1より少し大きくなるように、高
さ調整ネジ６ａにより高さＨ2を調整する。An outer packaging material container 2 containing the inner packaging material container 1
Then, the lid member 3 is attached so as to overlap the flange 2a of the outer packaging material container 2 and cover the opening of the recess 2b of the outer packaging material container 2. In this case, four corners of the flange 2a of the outer material container 2 is lifted to a height H 2 of greater than the height H 1 of the outer cover material container 2 position by a height adjusting screw 6a.
This height H 2 is adjusted by the degree of slack of the lid member 3. That is, as shown in FIG. 3, for example, two corners of the flange 2a of the outer packaging material container 2 that are overlapped with each other and two corners 3a and 3b of the lid material 3 are set as spot welding positions, and The length L 1 of the actual member between the spot welding positions of the flange 2a and the length L 2 of the actual member between the spot welding positions of the two corners 3a and 3b of the lid member 3 are substantially the same or The height H 2 is adjusted by the height adjusting screw 6a so that the length L 2 is slightly larger than the length L 1 .
【００１６】上記外包材容器２のフランジ２ａの四つの
角部と蓋材３の四つの角部３ａ，３ｂ，３ｃ，３ｄ（図
１に示す）とが重なる上記高さＨ2の位置で上記スポッ
ト溶着ヘッド４によりスポット溶着する。次ぎに、上記
スポット溶着機から、蓋材３が仮止めされ、内包材容器
１を収納した外包材容器２を取り出し、図示しない溶着
機により、図４に示すように、上記外包材容器２のフラ
ンジ２ａと蓋材３の重なり合う部分の三つの領域Ａ，
Ｂ，Ｃを溶着する。上記領域Ａ，Ｂ，Ｃの溶着後、真空
包装機（図示せず）により内包材容器１内と外包材容器
２内との空気を脱気する。そして、残りの上記外包材容
器２のフランジ２ａと蓋材３との重なり合う部分の領域
Ｄを上記溶着機により溶着する。At the position of the height H 2 where the four corners of the flange 2a of the outer packaging material container 2 and the four corners 3a, 3b, 3c, 3d of the lid member 3 (shown in FIG. 1) overlap each other. Spot welding is performed by the spot welding head 4. Next, the lid material 3 is temporarily fixed from the spot welding machine, and the outer packaging material container 2 accommodating the inner packaging material container 1 is taken out, and as shown in FIG. Three regions A where the flange 2a and the lid member 3 overlap,
Weld B and C. After welding the areas A, B, and C, the air in the inner packaging material container 1 and the outer packaging material container 2 is deaerated by a vacuum packaging machine (not shown). Then, the region D of the remaining overlapping portion of the flange 2a of the outer packaging material container 2 and the lid material 3 is welded by the welding machine.
【００１７】このように、上記蓋材３の外包材容器２へ
のスポット溶着による仮止めにより、蓋材３の弛みが蓋
材３全体に均等に広がって、シワが偏ることがなくなる
と共に、シワの発生が少なくなる。そして、たとえシワ
ができても溶着部分にスローリークが起こるような大き
いシワや複雑なシワにならない。したがって、上記外包
材容器２のフランジ２ａと蓋材３とが重なる部分の領域
Ａ，Ｂ，Ｃ，Ｄのシワの発生をできるだけ少なくして、
上記領域Ａ，Ｂ，Ｃ，Ｄにスローリークが発生するのを
防止できると共に、蓋材３の平面度がよくなり品質が従
来に比して向上する。また、上記スポット溶着すること
により蓋材３が仮止めされるから、上記外包材容器２の
フランジ２ａと蓋材３との重なる部分の領域Ａ，Ｂ，
Ｃ，Ｄを溶着するとき、外包材容器２に対する蓋材３の
位置ずれが起きないから、溶着不良とならない。したが
って、上記溶着時の作業性が向上すると共に、自動化へ
の対応も容易にできる。As described above, by temporarily fixing the lid member 3 to the outer wrapping material container 2 by spot welding, the looseness of the lid member 3 is spread evenly over the entire lid member 3, and the wrinkles are prevented from becoming uneven and the wrinkles are prevented. Is less likely to occur. Even if wrinkles are formed, they do not become large wrinkles or complicated wrinkles that cause a slow leak in the welded portion. Therefore, the occurrence of wrinkles in the regions A, B, C, and D where the flange 2a of the outer packaging material container 2 and the lid material 3 overlap is reduced as much as possible.
It is possible to prevent the slow leak from occurring in the areas A, B, C and D, and the flatness of the lid member 3 is improved to improve the quality as compared with the conventional one. Further, since the lid material 3 is temporarily fixed by the spot welding, the areas A, B of the overlapping portion of the flange 2a of the outer packaging material container 2 and the lid material 3,
When C and D are welded, the lid member 3 is not displaced with respect to the outer packaging material container 2, so that no welding failure occurs. Therefore, the workability at the time of welding can be improved and the automation can be easily dealt with.
【００１８】また、上記外包材容器２のフランジ２ａと
蓋材３との互いに重なる部分の領域Ａ，Ｂ，Ｃ，Ｄの四
つの角部を高さ調整ネジ６ａにより外包材容器２の高さ
Ｈ1より高い位置の高さＨ2まで持ち上げて、上記四つの
角部をスポット溶着しているので、上記蓋材３が弛んで
いても、図３に示す蓋材３の溶着部分の長さＬ1とそれ
に対応する外包材容器２のフランジ２ａの溶着部分の長
さＬ2を略同じにすることができる。したがって、上記
外包材容器２のフランジ２ａと蓋材３とが重なる部分の
溶着部分のシワの発生をより少なくすることができる。The four corners of the regions A, B, C, and D where the flange 2a of the outer packaging material container 2 and the lid material 3 overlap each other are fixed to the height of the outer packaging material container 2 by height adjusting screws 6a. lift to a height H 2 of higher than H 1 position, since the spot welding the four corners, even in the lid member 3 is slackened, the length of the welded portion of the lid 3 shown in FIG. 3 The length L 2 of the welded portion of the flange 2a of the outer packaging material container 2 corresponding to L 1 can be made substantially the same. Therefore, it is possible to further reduce the occurrence of wrinkles in the welded portion where the flange 2a of the outer packaging material container 2 and the lid material 3 overlap.
【００１９】また、上記蓋材３の弛み方が変っても、図
２，３に示すように、上記高さ調整ネジ６ａは、固定用
ロックナット６ｂをゆるめて、上記蓋材３の弛み方に合
わせて高さＨ2を調整することができるので、蓋材３の
溶着部分の長さＬ1とそれに対応する外包材容器２のフ
ランジ２ａの溶着部分の長さＬ2を略同じにできる。し
たがって、上記蓋材３の弛み方が変っても、上記外包材
容器２のフランジ２ａと蓋材３とが重なる溶着部分のシ
ワの発生を防止できる。Even if the slack of the lid member 3 changes, as shown in FIGS. 2 and 3, the height adjusting screw 6a loosens the fixing lock nut 6b to loosen the lid member 3. Since the height H 2 can be adjusted according to the above, the length L 1 of the welded portion of the lid member 3 and the corresponding length L 2 of the welded portion of the flange 2a of the outer packaging material container 2 can be made substantially the same. . Therefore, even if the slack of the lid member 3 is changed, it is possible to prevent wrinkles from being generated in the welded portion where the flange 2a of the outer packaging material container 2 and the lid member 3 overlap.
【００２０】上記実施例では、上記内包材容器１にパー
ライトまたはシリカ粉末を断熱材として用いたが、断熱
材は石綿やアルミナ繊維等を用いてもよい。In the above embodiment, pearlite or silica powder was used as the heat insulating material in the inner packaging material container 1, but asbestos or alumina fiber may be used as the heat insulating material.
【００２１】また、上記実施例では、スポット溶着する
箇所を上記外包材容器２のフランジ２ａと蓋材３とが重
なる領域の四つの角部としたが、上記四つの角部以外の
外包材容器２のフランジ２ａと蓋材３とが重なる領域に
スポット溶着してもよいのは勿論である。Further, in the above-mentioned embodiment, the spot welding is performed at the four corners of the region where the flange 2a of the outer packaging material container 2 and the lid material 3 overlap, but the outer packaging material container other than the four corner portions is used. Needless to say, spot welding may be performed in an area where the flange 2a of the second cover 2 and the lid member 3 overlap each other.
【００２２】[0022]
【発明の効果】以上より明らかなように、この発明の真
空断熱材の外包材溶着法よれば、断熱材が充填された内
包材容器を、外包材容器の底壁と側壁から形成された凹
部に収納する。さらに、上記外包材容器の側壁の縁から
外向に延びるフランジと重なるように、蓋材を外包材容
器の凹部の開口部に装着する。上記外包材容器のフラン
ジと蓋材との重なる部分を数箇所でスポット溶着した
後、上記外包材容器のフランジと蓋材との重なる部分を
全て溶着する。したがって、この発明によれば、上記蓋
材の仮止めにより、蓋材の弛みが蓋材全体に均等に広が
って、シワが偏ることがなくなると共に、シワの発生が
少なくなる。そして、たとえシワができても溶着部分に
スローリークが起こるような大きいシワや複雑なシワに
なることはない。したがって、上記外包材容器のフラン
ジと蓋材が重なる部分の溶着部分のシワの発生をできる
だけ少なくして、溶着部分にスローリークが発生するの
を防止することができると共に、蓋材の平面度がよくな
り品質が向上する。また、上記スポット溶着することに
より蓋材が仮止めされるから、上記外包材容器のフラン
ジと蓋材との重なる部分を溶着するとき、外包材容器に
対する蓋材の位置ずれが起きず、溶着不良が発生しな
い。したがって、従来に比して、溶着時の作業性が大幅
に向上すると共に、自動化への対応が容易となる。As is apparent from the above, according to the outer packaging material welding method of the vacuum heat insulating material of the present invention, the inner packaging material container filled with the heat insulating material is provided with the recess formed by the bottom wall and the side wall of the outer packaging material container. To store. Further, the lid member is attached to the opening of the concave portion of the outer packaging material container so as to overlap the flange extending outward from the edge of the side wall of the outer packaging material container. After spot welding the overlapping portions of the flange of the outer packaging material container and the lid material at several points, all the overlapping portions of the flange of the outer packaging material container and the lid material are welded. Therefore, according to the present invention, by temporarily fixing the lid member, the slack of the lid member is evenly spread over the entire lid member, and wrinkles are prevented from becoming uneven and wrinkles are less likely to occur. Even if wrinkles are formed, they do not become large wrinkles or complicated wrinkles that cause a slow leak in the welded portion. Therefore, it is possible to minimize the occurrence of wrinkles in the welded portion in the portion where the flange of the outer packaging material container and the lid material overlap, and to prevent the occurrence of slow leak in the welded portion, and the flatness of the lid material can be reduced. Improves and improves quality. Further, since the lid material is temporarily fixed by the spot welding, when the overlapping portion of the flange of the outer packaging material container and the lid material is welded, the lid material is not displaced with respect to the outer packaging material container, resulting in poor welding. Does not occur. Therefore, as compared with the prior art, the workability at the time of welding is greatly improved, and the automation can be easily handled.
【００２３】また、上記外包材容器のフランジと蓋材と
の互いに重なる部分は略矩形をして、上記重なる部分の
四つの角部を外包材容器の側壁とフランジとのなす角が
大きくなるように変形させて、上記四つの角部をスポッ
ト溶着する場合は、上記蓋材が弛んでいても、蓋材の溶
着部分の長さとそれに対応する外包材容器のフランジの
溶着部分の長さを略同じとすることができる。したがっ
て、上記外包材容器のフランジと蓋材とが重なる部分の
溶着部分のシワの発生をさらに少なくできる。Further, the overlapping portion of the flange of the outer wrapping material container and the lid member is substantially rectangular, and the four corners of the overlapping portion form a large angle between the side wall of the outer wrapping material container and the flange. When the four corners are spot-welded, the length of the welded portion of the lid material and the length of the welded portion of the flange of the outer packaging material container corresponding thereto are approximately the same even if the lid material is loose. Can be the same. Therefore, it is possible to further reduce the occurrence of wrinkles in the welded portion where the flange of the outer packaging material container and the lid material overlap.
【００２４】また、上記外包材容器の上記側壁と上記フ
ランジとのなす角を調節する調節手段で調節し、上記重
なる部分の四つの角部を変形させて、上記四つの角部を
スポット溶着する場合は、上記蓋材の弛み方が変って
も、それに合わせて外包材容器の側壁とフランジとのな
す角を調節して、蓋材の溶着部分の長さとそれに対応す
る外包材容器のフランジの溶着部分の長さを略同じにで
きる。したがって、上記蓋材の弛み方が変っても、上記
外包材容器のフランジと蓋材とが重なる部分の溶着部分
のシワの発生を防止することができる。Further, the angle between the side wall and the flange of the outer packaging material container is adjusted by adjusting means, the four corners of the overlapping portion are deformed, and the four corners are spot-welded. In this case, even if the slack of the lid changes, the angle between the side wall of the outer packaging material container and the flange is adjusted accordingly, and the length of the welded portion of the lid material and the corresponding flange of the outer packaging material container The lengths of the welded portions can be made substantially the same. Therefore, even if the slack of the lid member changes, it is possible to prevent wrinkles from being generated in the welded portion where the flange of the outer packaging material container and the lid member overlap.
【図１】 図１はこの発明の一実施例の真空断熱材の外
包材の構成を示す図である。FIG. 1 is a diagram showing a structure of an outer packaging material for a vacuum heat insulating material according to an embodiment of the present invention.
【図２】 図２は上記実施例のスポット溶着機の一部分
の側面図である。FIG. 2 is a side view of a portion of the spot welding machine of the above embodiment.
【図３】 図３は上記実施例のスポット溶着後の真空断
熱材の外包材の側面図である。FIG. 3 is a side view of an outer wrapping material for a vacuum heat insulating material after spot welding in the above embodiment.
【図４】 図４は上記実施例の溶着後の真空断熱材の外
包材の斜視図である。FIG. 4 is a perspective view of an outer wrapping material for the vacuum heat insulating material after welding in the above embodiment.
【図５】 図５は従来の真空断熱材の外包材の構成を示
す図である。FIG. 5 is a diagram showing a configuration of a conventional outer packaging material of a vacuum heat insulating material.
【図６】 図６は従来の溶着機の一部分の側面図であ
る。FIG. 6 is a side view of a part of a conventional welding machine.
【図７】 図７は上記従来の溶着機により製造された真
空断熱材の外包材の斜視図である。FIG. 7 is a perspective view of an outer packaging material of a vacuum heat insulating material manufactured by the conventional welding machine.
１…内包材容器、２…外包材容器、２ａ…フランジ、３
…蓋材、４…スポット溶着ヘッド、５…溶着ベース、６
ａ…高さ調整ネジ、６ｂ…固定用ロックナット、７…位
置決めガイド、１０…溶着テーブル、１１…下部溶着バ
ー、１２…上部溶着バー。DESCRIPTION OF SYMBOLS 1 ... Inner packaging material container, 2 ... Outer packaging material container, 2a ... Flange, 3
... Lid material, 4 ... Spot welding head, 5 ... Welding base, 6
a ... Height adjusting screw, 6b ... Fixing lock nut, 7 ... Positioning guide, 10 ... Welding table, 11 ... Lower welding bar, 12 ... Upper welding bar.
Claims (3)
有し、さらに側壁の縁から外向に延びるフランジを有す
る外包材容器と、 上記外包材容器の上記フランジと重なり、上記外包材容
器の開口部を蓋する蓋材とからなる真空断熱材の外包材
溶着法において、 上記外包材容器のフランジと上記蓋材とを重ねて、上記
フランジと蓋材との重なる部分を数箇所でスポット溶着
した後、上記外包材容器のフランジと上記蓋材との上記
重なる部分を全て溶着することを特徴とする真空断熱材
の外包材溶着法。1. An inner wrapping material container filled with a heat insulating material, an outer wrapping material container having a bottom wall and a side wall forming a recess for accommodating the inner wrapping material container, and further having a flange extending outward from an edge of the side wall. In the outer packaging material welding method of a vacuum heat insulating material, which overlaps with the flange of the outer packaging material container and covers the opening of the outer packaging material container, the flange of the outer packaging material container and the lid material are overlapped with each other. , Spot welding the overlapping portion of the flange and the lid material at several places, and then welding all the overlapping portion of the flange of the outer packaging material container and the lid material welding outer packaging material of the vacuum heat insulating material Law.
いに重なる部分は略矩形をしており、上記重なる部分の
四つの角部を上記外包材容器の上記側壁と上記フランジ
とのなす角が大きくなるように変形させて、上記四つの
角部をスポット溶着することを特徴とする請求項１に記
載の真空断熱材の外包材溶着法。2. A portion of the outer packaging material container where the flange and the lid material overlap with each other is substantially rectangular, and four corners of the overlapping portion are formed by the side wall of the outer packaging material container and the flange. The outer packaging material welding method for a vacuum heat insulating material according to claim 1, wherein the four corners are spot-welded by deforming so as to be larger.
ジとのなす角を調節する調節手段で調節し、上記重なる
部分の四つの角部を変形させて、上記四つの角部をスポ
ット溶着することを特徴とする請求項２に記載の真空断
熱材の外包材溶着法。3. An adjusting means for adjusting an angle formed by the side wall and the flange of the outer packaging material container is adjusted, and four corners of the overlapping portion are deformed to spot weld the four corners. The outer packaging material welding method for a vacuum heat insulating material according to claim 2, wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000076A JP2860220B2 (en) | 1993-01-04 | 1993-01-04 | Welding method for vacuum insulation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000076A JP2860220B2 (en) | 1993-01-04 | 1993-01-04 | Welding method for vacuum insulation material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06201088A true JPH06201088A (en) | 1994-07-19 |
| JP2860220B2 JP2860220B2 (en) | 1999-02-24 |
Family
ID=11464081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5000076A Expired - Fee Related JP2860220B2 (en) | 1993-01-04 | 1993-01-04 | Welding method for vacuum insulation material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2860220B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022092927A1 (en) * | 2020-11-02 | 2022-05-05 | Lg Electronics Inc. | Vacuum adiabatic body |
-
1993
- 1993-01-04 JP JP5000076A patent/JP2860220B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022092927A1 (en) * | 2020-11-02 | 2022-05-05 | Lg Electronics Inc. | Vacuum adiabatic body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2860220B2 (en) | 1999-02-24 |
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