JP3007212B2 - Manufacturing method of stainless steel vacuum double container - Google Patents
Manufacturing method of stainless steel vacuum double containerInfo
- Publication number
- JP3007212B2 JP3007212B2 JP4007393A JP739392A JP3007212B2 JP 3007212 B2 JP3007212 B2 JP 3007212B2 JP 4007393 A JP4007393 A JP 4007393A JP 739392 A JP739392 A JP 739392A JP 3007212 B2 JP3007212 B2 JP 3007212B2
- Authority
- JP
- Japan
- Prior art keywords
- bottle
- inner bottle
- press
- mouth
- stainless steel
- 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 - Fee Related
Links
Landscapes
- Automatic Assembly (AREA)
- Thermally Insulated Containers For Foods (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は魔法瓶等に使用されるス
テンレス鋼製真空二重容器の製造方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a stainless steel vacuum double container used for a thermos or the like.
【０００２】[0002]
【従来の技術】従来、ステンレス鋼製真空二重容器の製
造には、図３に示すように、外瓶１２の口部１２ｂを支
持台１３に固定してから、その外瓶１２の胴１２ｃ内に
内瓶１１を挿入し、内瓶１１の底１１ａを圧入治具１４
で押圧して内瓶１１の口部１１ｂを外瓶１２の口部１２
ｂに嵌合する方法が採用されている。そして、このよう
にして内瓶１１を外瓶１２に挿入した後、それらの口部
１１ｂ，１２ｂを接合するとともに、外瓶１２の胴１２
ｃに底（図示せず）を接合し、内瓶１１と外瓶１２の間
の空間を排気処理して真空にするようになっている。な
お、内瓶１１の底１１ａは球面で耐圧構造になっている
が、この内瓶１１の底１１ａに当接する圧入治具１４も
球面になっている。2. Description of the Related Art Conventionally, in manufacturing a vacuum double container made of stainless steel, as shown in FIG. 3, a mouth portion 12b of an outer bottle 12 is fixed to a support table 13, and then a body 12c of the outer bottle 12 is fixed. The inner bottle 11 is inserted into the inside, and the bottom 11a of the inner bottle 11 is
And press the mouth 11b of the inner bottle 11 to the mouth 12 of the outer bottle 12.
The method of fitting to b is adopted. Then, after the inner bottle 11 is inserted into the outer bottle 12 in this manner, the mouth portions 11b and 12b are joined, and the body 12 of the outer bottle 12 is joined.
The bottom (not shown) is joined to c, and the space between the inner bottle 11 and the outer bottle 12 is evacuated to create a vacuum. Although the bottom 11a of the inner bottle 11 is spherical and has a pressure-resistant structure, the press-fitting jig 14 that contacts the bottom 11a of the inner bottle 11 is also spherical.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
製造方法では、外瓶１２の胴１２ｃ内に挿入された内瓶
１１が図３に示すように傾いていても、その状態のまま
圧入治具１４で押圧されるので、内瓶１１と外瓶１２が
接触してしまい、断熱性が損なわれる虞れがあった。こ
のため、従来の真空二重容器は、内瓶１１と外瓶１２の
間の隙間を大きく（４ｍｍ程度）採って両者が接触しな
いようにする必要があった。したがって、従来の真空二
重容器は内瓶１１の内径の割に外瓶１２の外径が大きく
て、コンパクト性に欠けていた。本発明は、かかる問題
点を解決するのを課題とし、内瓶と外瓶の間の隙間が小
さくても内瓶が傾いて外瓶に接触することのないステン
レス鋼製真空二重容器の製造方法を提供することを目的
とするものである。However, in the conventional manufacturing method, even if the inner bottle 11 inserted into the body 12c of the outer bottle 12 is inclined as shown in FIG. Since the inner bottle 11 and the outer bottle 12 are in contact with each other, there is a possibility that the heat insulating property is impaired. For this reason, in the conventional vacuum double container, it is necessary to take a large gap (about 4 mm) between the inner bottle 11 and the outer bottle 12 so that they do not come into contact with each other. Therefore, in the conventional vacuum double container, the outer diameter of the outer bottle 12 is larger than the inner diameter of the inner bottle 11, and the compactness is lacking. An object of the present invention is to solve such a problem, and to manufacture a stainless steel vacuum double container in which the inner bottle is not inclined and does not come into contact with the outer bottle even if the gap between the inner bottle and the outer bottle is small. It is intended to provide a method.
【０００４】[0004]
【課題を解決するための手段】前記目的を達成するた
め、本発明は、外瓶の銅内に内瓶を挿入し、内瓶の底を
圧入治具で押圧して内瓶の口部を外瓶の口部に嵌合し、
それらの口部を接合するとともに、外瓶の銅に底を接合
した後、内瓶と外瓶の間の空間を真空にするステンレス
鋼製真空二重容器の製造方法において、内瓶の底中央に
凹又は凸状の係合部を設け、該内瓶の外面を係合部の近
傍を除いて銅又はアルミニウムの箔で覆う一方、内瓶の
底を押圧する圧入治具に前記内瓶の係合部に係合するガ
イド部を設けて、内瓶と外瓶の間の隙間を２ｍｍ程度に
し、当該圧入治具のガイド部を内瓶の係合部に係合する
ことにより、内瓶をガイドしつつ押圧するようにした。In order to achieve the above object, the present invention is to insert an inner bottle into the copper of the outer bottle and press the bottom of the inner bottle with a press-fitting jig to open the mouth of the inner bottle. Fits into the mouth of the outer bottle,
In the method of manufacturing a stainless steel vacuum double container in which the mouth is joined and the bottom is joined to the copper of the outer bottle and then the space between the inner bottle and the outer bottle is evacuated, the center of the bottom of the inner bottle is A concave or convex engaging portion is provided on the inner bottle, and the outer surface of the inner bottle is covered with copper or aluminum foil except for the vicinity of the engaging portion, while the inner bottle is inserted into a press-fitting jig that presses the bottom of the inner bottle. By providing a guide portion that engages with the engagement portion, making the gap between the inner bottle and the outer bottle approximately 2 mm, and engaging the guide portion of the press-fitting jig with the engagement portion of the inner bottle, Is pressed while being guided.
【０００５】[0005]
【作用】この発明によれば、外瓶の胴内に挿入された内
瓶の底を圧入治具により押圧すると、圧入治具のガイド
部が内瓶の係合部に係合して内瓶が外瓶の中心から外れ
ないようにガイドされる。したがって、内瓶は傾くこと
なく押圧されて、その口部が外瓶の口部に嵌合する。According to the present invention, when the bottom of the inner bottle inserted into the body of the outer bottle is pressed by the press-fitting jig, the guide portion of the press-fitting jig engages with the engaging portion of the inner bottle and the inner bottle is engaged. Is guided so as not to deviate from the center of the outer bottle. Therefore, the inner bottle is pressed without tilting, and its mouth fits into the mouth of the outer bottle.
【０００６】[0006]
【実施例】次に、本発明の実施例を図面に従って説明す
る。図１において、１はステンレス鋼製の内瓶、２は底
２ａ（図２参照）を接合する前のステンレス鋼製の外
瓶、３は支持台、４は圧入治具である。内瓶１の底１ａ
は内方に膨出する球面で形成され、その中央には内側に
押し込まれた円形凹状の係合部５が形成されている。ま
た、この内瓶１の外面は、係合部５の近傍を除いて、輻
射防止及び後述する排気処理後に遊離するガスを吸収さ
せるための銅又はアルミニウムからなる箔６で覆われて
いる。Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a stainless steel inner bottle, 2 is a stainless steel outer bottle before joining the bottom 2a (see FIG. 2), 3 is a support stand, and 4 is a press-fitting jig. Bottom 1a of inner bottle 1
Is formed by a spherical surface that bulges inward, and a circular concave engaging portion 5 that is pushed inward is formed at the center thereof. The outer surface of the inner bottle 1 is covered with a foil 6 made of copper or aluminum for preventing radiation and absorbing gas liberated after an exhaust process described below, except for the vicinity of the engaging portion 5.
【０００７】支持台３には、外瓶２の口部２ｂが嵌合す
る嵌合穴７が形成されている。圧入治具４は図示しない
駆動装置によって昇降可能になっており、その押圧面に
は前記内瓶１の係合部５に係合する円形凸状のガイド部
８が形成されている。なお、前記係合部５の内径が大き
すぎると、容量ロスが大きく、また、底１ａが薄板であ
るので変形が生じやすい。逆に、小さすぎると、この係
合部５に係合するガイド部８の摩耗量が大きくなり、耐
久性が悪い。したがって、係合部５は２０ｍｍ程度の小
径が適当である。The support base 3 has a fitting hole 7 into which the mouth 2b of the outer bottle 2 fits. The press-fitting jig 4 can be moved up and down by a driving device (not shown), and a circular convex guide portion 8 that engages with the engaging portion 5 of the inner bottle 1 is formed on a pressing surface thereof. If the inner diameter of the engaging portion 5 is too large, the capacity loss is large, and the bottom 1a is a thin plate, so that the bottom 1a is easily deformed. Conversely, if it is too small, the amount of wear of the guide portion 8 engaging with the engaging portion 5 increases, and the durability is poor. Therefore, it is appropriate that the engaging portion 5 has a small diameter of about 20 mm.
【０００８】本実施例に係る製造方法では、まず、図１
に示すように、外瓶２を上下逆にしてその口部２ｂを支
持台３の嵌合穴７に嵌合する。次に、内瓶１を上下逆に
して外瓶２の胴２ｃ内に挿入し、その口部１ｂを外瓶２
の口部２ｂの奥に当接させる。そして、圧入治具４を降
下させて内瓶１の底１ａを押圧してゆく。このとき、内
瓶１が多少傾いていたとしても、圧入治具４のガイド部
８が内瓶１の底１ａの係合部５に係合してゆき、胴２ｃ
の中心に戻されて直立状態になる。また、内瓶１は、圧
入治具４による押圧中に、ガイド部８によって外瓶２の
胴２ｃの中心から外れないようにガイドされるので、真
っ直ぐに押圧されてその口部１ｂが外瓶２の口部２ｂに
嵌合してゆく。In the manufacturing method according to this embodiment, first, FIG.
As shown in (2), the outer bottle 2 is turned upside down and its mouth 2b is fitted into the fitting hole 7 of the support base 3. Next, the inner bottle 1 is turned upside down and inserted into the body 2c of the outer bottle 2, and its mouth 1b is
To the back of the mouth 2b. Then, the press-in jig 4 is lowered to press the bottom 1 a of the inner bottle 1. At this time, even if the inner bottle 1 is slightly inclined, the guide portion 8 of the press-fitting jig 4 engages with the engaging portion 5 of the bottom 1a of the inner bottle 1, and the body 2c
It is returned to the center and stands upright. Also, the inner bottle 1 is guided by the guide portion 8 so as not to deviate from the center of the body 2c of the outer bottle 2 while being pressed by the press-fitting jig 4, so that the inner bottle 1 is pressed straight and its mouth 1b is pulled out. 2 into the mouth 2b.
【０００９】したがって、内瓶１と外瓶２の間の隙間が
小さくても、その隙間を維持したまま内瓶１と外瓶２が
一体化される。このため、内瓶１と外瓶２の間の隙間が
従来の４ｍｍより小さい例えば２ｍｍ程度のコンパクト
な容器でも容易に組み立てることができる。このように
して、内瓶１と外瓶２を一体化した後、図２中２点鎖線
で示すように、外側に膨出するとともに、チップ管９が
接続された底２ａを、外瓶２の胴２ｃの端部に嵌合した
後、内瓶１の口部１ｂと外瓶２の口部２ｂを溶接接合
し、さらに外瓶２の胴２ｃと底２ａを溶接接合する。そ
して、チップ管９を介して内瓶１と外瓶２の間の空間の
空気を排気処理し、チップ管９を圧潰して真空状態に封
じ込めて、最後に外瓶２の底２ａを図２中実線で示すよ
うに内方に押し込む。Therefore, even if the gap between the inner bottle 1 and the outer bottle 2 is small, the inner bottle 1 and the outer bottle 2 are integrated while maintaining the gap. Therefore, it is possible to easily assemble a compact container having a gap between the inner bottle 1 and the outer bottle 2 smaller than the conventional 4 mm, for example, about 2 mm. After integrating the inner bottle 1 and the outer bottle 2 in this way, as shown by a two-dot chain line in FIG. After that, the mouth 1b of the inner bottle 1 and the mouth 2b of the outer bottle 2 are welded together, and the body 2c of the outer bottle 2 and the bottom 2a are welded together. Then, the air in the space between the inner bottle 1 and the outer bottle 2 is exhausted through the tip tube 9, the tip tube 9 is crushed and sealed in a vacuum state, and finally the bottom 2a of the outer bottle 2 is closed as shown in FIG. Push inward as shown by the solid line.
【００１０】なお、前記実施例では、内瓶１の底１ａの
係合部５を円形凹状にし、圧入治具４のガイド部８を円
形凸状にしたが、これと逆に内瓶１の係合部５を凸状に
し、圧入治具４のガイド部８をその係合部５に係合する
凹状にしてもよい。これらの係合部５、ガイド部８の形
状は、円錐形や球形にすることも可能である。また、本
発明に係る製造方法は、前記実施例のように内瓶１が内
方に膨出する球面状の底１ａを有するものに限らず、外
方に膨出する球面あるいは平面状の底１ａを有するもの
にも適用可能であることは言うまでもない。In the above-described embodiment, the engaging portion 5 of the bottom 1a of the inner bottle 1 has a circular concave shape, and the guide portion 8 of the press-fitting jig 4 has a circular convex shape. The engaging portion 5 may be formed in a convex shape, and the guide portion 8 of the press-fitting jig 4 may be formed in a concave shape in which the engaging portion 5 is engaged. The shapes of the engaging portion 5 and the guide portion 8 can be conical or spherical. Further, the manufacturing method according to the present invention is not limited to the method in which the inner bottle 1 has the spherical bottom 1a that bulges inward as in the above embodiment, but the spherical or planar bottom bulges outward. It is needless to say that the present invention is applicable to those having 1a.
【００１１】[0011]
【発明の効果】以上の説明から明らかなように、本発明
によれば、内瓶は圧入治具のガイド部によってガイドさ
れて、傾くことなくその口部が外瓶の口部に嵌合するの
で、内瓶と外瓶の間の隙間が小さいステンレス鋼製真空
二重容器が容易に製造される。すなわち、従来と内径は
同じであるが外径の小さい、あるいは従来と外径は同じ
であるが内径が大きく背が低いコンパクトな容器を製造
することができる。As is apparent from the above description, according to the present invention, the inner bottle is guided by the guide portion of the press-fitting jig, and its mouth fits into the mouth of the outer bottle without tilting. Therefore, a stainless steel vacuum double container with a small gap between the inner bottle and the outer bottle is easily manufactured. In other words, it is possible to manufacture a compact container having the same inner diameter and a smaller outer diameter as the conventional one, or a compact container having the same outer diameter as the conventional but a large inner diameter and a short height.
【図１】 本発明に係るステンレス鋼製真空二重容器の
製造方法の一工程を示す断面図である。FIG. 1 is a sectional view showing one step of a method for manufacturing a stainless steel vacuum double container according to the present invention.
【図２】 本発明に係る方法により製造されたステンレ
ス鋼製真空二重容器の断面図である。FIG. 2 is a sectional view of a stainless steel vacuum double container manufactured by the method according to the present invention.
【図３】 従来のステンレス鋼製真空二重容器の製造方
法の一工程を示す断面図である。FIG. 3 is a cross-sectional view showing one process of a conventional method for manufacturing a vacuum double container made of stainless steel.
１…内瓶、１ａ…内瓶底、１ｂ…内瓶口部、２…外瓶、
２ａ…外瓶底、２ｂ…外瓶口部、２ｃ…外瓶胴、４…圧
入治具、５…係合部、８…ガイド部。1 ... inner bottle, 1a ... inner bottle bottom, 1b ... inner bottle mouth, 2 ... outer bottle,
2a: outer bottle bottom, 2b: outer bottle mouth, 2c: outer bottle body, 4: press-fitting jig, 5: engaging portion, 8: guide portion.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭64−31048（ＪＰ，Ｕ) 実開 昭60−125029（ＪＰ，Ｕ) 実開 昭61−151834（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B23P 19/02 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Open to the public Showa 64-31048 (JP, U) Open to the public Showa 60-125029 (JP, U) Open to the public Showa 61-151834 (JP, U) (58) Field (Int.Cl. 7 , DB name) B23P 19/02
Claims (1)
圧入治具で押圧して内瓶の口部を外瓶の口部に嵌合し、
それらの口部を接合するとともに、外瓶の銅に底を接合
した後、内瓶と外瓶の間の空間を真空にするステンレス
鋼製真空二重容器の製造方法において、 内瓶の底中央に凹又は凸状の係合部を設け、該内瓶の外
面を係合部の近傍を除いて銅又はアルミニウムの箔で覆
う一方、内瓶の底を押圧する圧入治具に前記内瓶の係合
部に係合するガイド部を設けて、 内瓶と外瓶の間の隙間を２ｍｍ程度にし、 当該圧入治具のガイド部を内瓶の係合部に係合すること
により、内瓶をガイドしつつ押圧することを特徴とする
ステンレス鋼製真空二重容器の製造方法。1. Inserting the inner bottle into the copper of the outer bottle, pressing the bottom of the inner bottle with a press-in jig to fit the mouth of the inner bottle into the mouth of the outer bottle,
A method for manufacturing a stainless steel vacuum double container that joins their mouths and joins the bottom to the copper of the outer bottle, and then vacuums the space between the inner bottle and the outer bottle. A concave or convex engaging portion is provided on the inner bottle, and the outer surface of the inner bottle is covered with copper or aluminum foil except for the vicinity of the engaging portion, while the inner bottle is inserted into a press-fitting jig that presses the bottom of the inner bottle. By providing a guide portion that engages with the engaging portion, making the gap between the inner bottle and the outer bottle approximately 2 mm, and engaging the guide portion of the press-fitting jig with the engaging portion of the inner bottle, A method for producing a vacuum double container made of stainless steel, wherein the container is pressed while guiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007393A JP3007212B2 (en) | 1992-01-20 | 1992-01-20 | Manufacturing method of stainless steel vacuum double container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007393A JP3007212B2 (en) | 1992-01-20 | 1992-01-20 | Manufacturing method of stainless steel vacuum double container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05192823A JPH05192823A (en) | 1993-08-03 |
| JP3007212B2 true JP3007212B2 (en) | 2000-02-07 |
Family
ID=11664675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4007393A Expired - Fee Related JP3007212B2 (en) | 1992-01-20 | 1992-01-20 | Manufacturing method of stainless steel vacuum double container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3007212B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6113590B2 (en) * | 2013-07-04 | 2017-04-12 | 株式会社長井技研 | Manufacturing method and manufacturing apparatus for double container member |
| CN105215218B (en) * | 2015-08-12 | 2017-11-24 | 膳魔师（江苏）家庭制品有限公司 | A kind of Dewar bottle inner and outer pipes and outer tube bottom press-in jig and method of press-fitting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60125029U (en) * | 1984-02-02 | 1985-08-23 | 富士重工業株式会社 | Automatic component reverse feed built-in device |
| JPH026994Y2 (en) * | 1985-03-12 | 1990-02-20 | ||
| JPH0440608Y2 (en) * | 1987-08-21 | 1992-09-24 |
-
1992
- 1992-01-20 JP JP4007393A patent/JP3007212B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05192823A (en) | 1993-08-03 |
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