JP4908788B2 - Tubular member manufacturing method and manufacturing apparatus - Google Patents
Tubular member manufacturing method and manufacturing apparatus Download PDFInfo
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- JP4908788B2 JP4908788B2 JP2005192659A JP2005192659A JP4908788B2 JP 4908788 B2 JP4908788 B2 JP 4908788B2 JP 2005192659 A JP2005192659 A JP 2005192659A JP 2005192659 A JP2005192659 A JP 2005192659A JP 4908788 B2 JP4908788 B2 JP 4908788B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
本発明は、巻き締めにより開口部を封止するのに好適な蓋部材の取り付け方法に特徴をもつ管状部材の製造方法及び製造装置に関する。 The present invention relates to a tubular member manufacturing method and a manufacturing apparatus characterized by a method of attaching a lid member suitable for sealing an opening by winding.
密閉型電池は一端部が開口する管状の電池缶の内部に発電要素を挿入した後、開口部を蓋部材にて封止することにより製造している。蓋部材を電池缶に固定する従来技術としては、カシメ固定法にて行う方法が挙げられている(特許文献1)。 A sealed battery is manufactured by inserting a power generation element into a tubular battery can having one end opened, and then sealing the opening with a lid member. As a conventional technique for fixing the lid member to the battery can, there is a method performed by a caulking fixing method (Patent Document 1).
特許文献1の方法は外装缶開口部を金型を用いて約90度に内側に折り曲げる方法である。密閉性確保のためにガスケットなどのシール材が用いられている。特許文献1の方法ではガスケットを採用しているので、部品点数が多くなると共に、作業性の向上には限界があった。
本発明では上記実情に鑑み為されたものであり、簡便な方法で電池缶などの一端部が開口した管状部材の開口部に蓋部材を固定することが可能な管状部材の製造方法及びその製造方法に好適に用いることができる製造装置を提供することを解決すべき課題とする。 The present invention has been made in view of the above circumstances, and a method for manufacturing a tubular member capable of fixing a lid member to an opening of a tubular member having one end opened, such as a battery can, by a simple method, and its manufacture It is an object to be solved to provide a manufacturing apparatus that can be suitably used in a method.
(1)上記課題を解決する目的で、本発明者らは鋭意検討を行った結果、管状部材の開口部に蓋部材を固定する方法として巻き締めを採用することに思い至り、その巻き締めをプレス類似の手法にて行うことができる製造方法を開発し、以下の発明を完成した。 (1) In order to solve the above-mentioned problems, the present inventors have intensively studied and, as a result, came up with the idea of adopting winding tightening as a method for fixing the lid member to the opening of the tubular member. A manufacturing method that can be performed by a press-like technique was developed, and the following invention was completed.
(1−1)すなわち、上記課題を解決する本発明の管状部材の製造方法は、少なくとも一端部が開口する筒状部材と、該一端部に固定される蓋部材とを巻き締めする方法を採用した該一端部に該蓋部材を固定した管状部材の製造方法であって、
前記筒状部材の前記一端部と前記蓋部材とは少なくとも巻き締めされる部分において重なり合って密着する形状をもつ巻き締め部をそれぞれにもち、
該筒状部材及び該蓋部材それぞれの該巻き締め部を重ね合わせる工程と、
押し型を可動型、座屈防止金型を固定型とする金型により、
断面形状が、該巻き締め部を巻き締めした後の外形と同程度の形状をもつ曲線からなり、該巻き締め部の該一端部側がある部位に概ね沿って配設される巻き締めガイド部をもつ該押し型にて、該一端部が開口する方向から該巻き締め部に当接・押圧することで、重なり合った該巻き締め部の該一端部側が該押し型の該断面形状に沿って巻回される巻回工程と、
該巻回工程において、該座屈防止金型で該巻き締め部を支持することで座屈を防ぐ工程と、を有することを特徴とする。また、好適な態様として、前記筒状部材は、一端部のみが開口するものであるとよい。
(1-1) That is, the manufacturing method of the tubular member of the present invention that solves the above problem employs a method of winding a cylindrical member having at least one end opened and a lid member fixed to the one end. A method of manufacturing a tubular member in which the lid member is fixed to the one end,
The one end portion of the tubular member and the lid member each have a tightening portion having a shape that overlaps and closely adheres at a portion to be tightened,
Superimposing the winding portions of the tubular member and the lid member,
With a mold that makes the push mold movable and the buckling prevention mold fixed,
A winding guide portion that has a cross-sectional shape made of a curve having a shape similar to that of the outer shape after the tightening portion is tightened, and that is disposed substantially along a portion where the one end side of the tightening portion is located. at the press-type having, by the one end to pressed into contact in the winding-out fastening portion in a direction opening the one end side of the overlapped take--out fastening portion along the pusher type the cross-sectional shape winding A winding process to be rotated;
The winding step includes a step of preventing buckling by supporting the tightening portion with the buckling prevention mold. Moreover, as a suitable aspect, it is good that the said cylindrical member opens only one end part.
管状部材と蓋部材とに重なり合う巻き締め部を設け、その巻き締め部を開口方向から押し型で押圧することで、巻き締めが完了する。巻き締め部に当接する押し型の部位には巻き締め部が巻き締めされる断面形状に相当する断面形状を有する巻き締めガイド部が設けられており、押し型の押圧により巻き締め部の一端部側から順に巻き締めガイド部内の形状に沿って曲がって(巻かれて)いくことになる。巻き締めガイド部により巻き締め部が順次巻かれていくことで巻き締め部の一端部側は巻き締めガイド部の断面径をもつロール状に巻かれていく。巻き締め部の長さ及び巻き締めガイド部の断面形状を変化させることで巻き締めの回数・形状を制御できる。更に、押し型を開口部に押圧するときに管状部材などに座屈が生じないように座屈防止金型で巻き締め部を支持することで、安定して巻き締めを行うことができる。 A winding tightening portion is provided on the tubular member and the lid member, and the tightening is completed by pressing the winding tightening portion with a pressing die from the opening direction. A winding clamping guide portion having a cross-sectional shape corresponding to the cross-sectional shape around which the tightening portion is tightened is provided at a portion of the pressing die that comes into contact with the tightening portion, and one end portion of the tightening portion is pressed by the pressing die. It will bend (wind) along the shape in the winding guide part in order from the side. As the winding tightening portion is sequentially wound by the winding tightening guide portion, one end portion side of the winding tightening portion is wound into a roll having the cross-sectional diameter of the winding tightening guide portion. The number and shape of the tightening can be controlled by changing the length of the tightening portion and the cross-sectional shape of the tightening guide portion. Furthermore, when the pressing die is pressed against the opening , the winding member is supported by the buckling prevention mold so that the tubular member or the like does not buckle , so that the winding can be stably performed.
ここで、巻き締めガイド部に巻き締め部の一端部側が当接する部分の傾斜の方向により巻き締め部が巻かれていく方向が決定される。例えば、巻き締めガイド部の外方向で巻き締め部の一端部側に当接する場合には巻き締め部の一端部側は巻き締めガイド部に合わせて内側方向に折れ曲がっていく。反対に、巻き締めガイド部の内方向で巻き締め部の一端部側に当接する場合には巻き締め部の一端部側は巻き締めガイド部に合わせて外側方向に折れ曲がっていく。 Here, the direction in which the tightening portion is wound is determined by the direction of inclination of the portion where the one end portion side of the tightening portion abuts on the tightening guide portion. For example, in the case of coming into contact with one end side of the winding tightening portion in the outer direction of the winding tightening guide portion, the one end portion side of the winding tightening portion is bent inward along with the winding tightening guide portion. On the other hand, when it comes into contact with the one end side of the tightening portion in the inward direction of the tightening guide portion, the one end portion side of the winding tightening portion is bent outward in accordance with the tightening guide portion.
(1−2)前記管状部材の内周面には、該管状部材内に前記蓋部材が進入することを制限する縮径部を有することが望ましい。有底の缶などの開口部を蓋部材にて封止する場合など管状部材の一端部側に蓋部材を位置決めする有効な手段とすることができる。 (1-2) It is desirable that the inner peripheral surface of the tubular member has a reduced diameter portion that restricts the lid member from entering the tubular member. It can be an effective means for positioning the lid member on the one end side of the tubular member, such as when an opening such as a bottomed can is sealed with the lid member.
(1−3)前記巻き締め部は、前記管状部材の前記一端部及び前記蓋部材の全周にわたり形成され、該管状部材の該一端部は該蓋部材により封止されていることで、管状部材の一端部側の開口部を蓋部材にて封止することができる。 (1-3) The tightening portion is formed over the one end portion of the tubular member and the entire circumference of the lid member, and the one end portion of the tubular member is sealed by the lid member, thereby forming a tubular shape. The opening on one end side of the member can be sealed with a lid member.
(1−4)前記重ね合わせ工程後、前記巻回工程前に前記巻き締め部の前記一端部方向の先端部を巻回方向に応じて縮径又は拡径する工程を有することで、巻き締め部の一端部側を巻き締めガイド部にて確実に受けることができる。 (1-4) After the stacking step, before the winding step, the step of reducing the diameter of the distal end portion in the one end portion direction of the tightening portion in accordance with the winding direction is performed. The one end side of the part can be reliably received by the winding guide part.
(1−5)前記巻回工程後、巻回された前記巻き締め部を前記管状部材の径方向に押圧して扁平化させる扁平化工程を有することで、管状部材由来の巻き締め部と蓋部材由来の巻き締め部との密着性をより高めることができる。 (1-5) After the winding step, by having a flattening step of pressing and flattening the wound tightening portion in the radial direction of the tubular member, the winding member and the lid derived from the tubular member Adhesiveness with the winding part derived from a member can be improved more.
(1−6)前記巻き締め部は前記管状部材の内側方向に巻回され、前記座屈防止工程における前記巻き締め部の支持は、該巻き締め部の外周面に密着する座屈防止金型により行われることで、巻き締めされた巻き締め部が管状部材の径方向外側に突出することがなくなり、複数の管状部材を並べた場合でも巻き締め部による空間の無駄発生をなくすることができる。ここで、前記押し型の外周面は前記座屈防止金型の内周面に密着する形状にすることで、巻き締め部を内巻きにする際に押し型による管状部材の座屈が効果的に防止できる。 (1-6) The buckling part is wound in the inner direction of the tubular member, and the buckling prevention mold in close contact with the outer peripheral surface of the winding part is supported in the buckling prevention process. As a result, the tightened winding portion does not protrude outward in the radial direction of the tubular member, and even when a plurality of tubular members are arranged, it is possible to eliminate wasteful space due to the tightening portion. . Here, the outer peripheral surface of the pressing die is shaped so as to be in close contact with the inner peripheral surface of the buckling prevention die, so that the buckling of the tubular member by the pressing die is effective when the tightening portion is internally wound. Can be prevented.
(1−7)前記巻き締めガイド部は、前記巻き締め部に沿って延設された溝とすることが望ましい。巻き締めガイド部は巻き締め部を巻くことができる最小限の長さ、数だけ設けても十分に巻き締めを行うことができるが、巻き締め部に沿った状態で連続して設けた溝とすることで、より確実に巻き締めを行うことができる。 (1-7) The winding guide part is preferably a groove extending along the winding part. The winding guide portion can be sufficiently wound even if it is provided in the minimum length and number that can wind the winding portion, but the groove provided continuously along the winding portion and By doing so, it is possible to perform the tightening more reliably.
(2)上記課題を解決する本発明の管状部材の製造装置は、少なくとも一端部が開口する筒状部材と、該一端部に固定される蓋部材とを巻き締めする装置であって、
前記筒状部材の前記一端部と前記蓋部材とは少なくとも巻き締めされる部分において重なり合って密着する形状をもつ巻き締め部をそれぞれにもち、それぞれの該巻き締め部を重ね合わせた状態の該筒状部材及び該蓋部材に対して、
断面形状が、該巻き締め部を巻き締めした後の外形と同程度の形状をもつ曲線からなり、且つ、該巻き締め部の該一端部側がある部位に概ね沿って配設される巻き締めガイド部をもち、該一端部が開口する方向から該巻き締め部に当接・押圧することで、重なり合った該巻き締め部の該一端部側を該押し型の該断面形状に沿って巻回する可動型である押し型と、
該押し型が巻き締めする方向と反対の方向から該巻き締め部を支持することで座屈を防ぐ固定型である座屈防止金型と、を有することを特徴とする。
(2) The tubular member manufacturing apparatus of the present invention that solves the above-described problem is an apparatus that winds up a cylindrical member having at least one end opened and a lid member fixed to the one end.
The one end portion of the cylindrical member and the lid member each have a tightening portion having a shape that overlaps and adheres at least in a portion to be tightened, and the tube in a state in which the respective tightening portions are overlapped. For the shaped member and the lid member,
A winding guide in which the cross-sectional shape is a curve having a shape similar to that of the outer shape after the tightening portion is wound, and the winding tightening guide is arranged substantially along a portion where the one end side of the tightening portion is located The one end side of the overlapping tightening portion is wound along the cross-sectional shape of the pressing die by contacting and pressing the winding tightening portion from the direction in which the one end portion opens. A movable push mold,
It has a buckling prevention mold which is a fixed mold which prevents buckling by supporting the tightening portion from a direction opposite to the direction in which the pressing mold is tightened.
本発明の管状部材の製造方法及び製造装置によると、型にて押圧することで巻き締めが完了し、巻き締めの程度も制御可能なので、シール材を用いなくてもシール性に優れた管状部材を提供することができる。 According to the manufacturing method and the manufacturing apparatus of the tubular member of the present invention, since the tightening is completed by pressing with a mold and the degree of the tightening can be controlled, the tubular member having excellent sealing performance without using a sealing material Can be provided.
本発明の管状部材の製造方法は、少なくとも一端部が開口する筒状部材に対して、蓋部材を一端部に蓋部材を固定する方法に適用できる。ここで、管状部材と蓋部材との固定は一般的に巻き締めと称される方法にて行われる。巻き締めの回数・長さなどを調節することで、密封性などの必要な性能を得ることができる。 The tubular member manufacturing method of the present invention can be applied to a method in which a lid member is fixed to one end of a cylindrical member having at least one end opened. Here, the fixing of the tubular member and the lid member is performed by a method generally called winding. By adjusting the number and length of the tightening, necessary performance such as sealing performance can be obtained.
本発明が適用できる対象としては、リチウム電池などの密閉型電池の筐体としての有底の管状部材と蓋部材との固定や、食品や飲料物用の缶の封止など有底、無底を問わずに管状部材の開口する一端部に蓋部材を固定する方法一般に適用できる。管状部材の断面形状としては円形はもちろん角形などの多角形にも適用できる。なお、断面形状が多角形の場合には、巻き締め遂行の容易さの観点からは角部分は曲線にて丸めることが望ましい。 The object to which the present invention can be applied includes bottomed, bottomless, such as fixing of a bottomed tubular member and a lid member as a casing of a sealed battery such as a lithium battery, sealing of a can for foods and beverages, etc. Regardless of the method, the method of fixing the lid member to one end portion of the tubular member that is open can be generally applied. The cross-sectional shape of the tubular member can be applied to a polygon such as a square as well as a circle. When the cross-sectional shape is a polygon, it is desirable to round the corner portion with a curve from the viewpoint of easy winding.
管状部材と蓋部材との固定は管状部材の開口部の全周にわたって行わなず、一部分を巻き締めなしとすることもできる。管状部材の一端部と蓋部材とは、少なくとも巻き締めされる部分において重なり合って密着する形状をもつ巻き締め部をそれぞれにもつ。巻き締め部の開口部方向の長さは巻き締めを行う長さに応じて決定される。巻き締め部を長くする方が巻き締めの回数を多くすることができる。 The tubular member and the lid member may not be fixed over the entire circumference of the opening of the tubular member, and a part of the tubular member and the lid member may be unwound. One end portion of the tubular member and the lid member each have a tightening portion having a shape that overlaps and closely contacts at least a portion to be wound. The length of the tightening portion in the opening direction is determined according to the length for performing the tightening. The length of the tightening portion can increase the number of times of tightening.
管状部材の内周面は蓋部材が当接することで蓋部材の進入を制限し、管状部材の開口方向の位置決めができる縮径部を有することができる。有底の管状部材などでは蓋部材の位置決めに管状部材の内部から蓋部材を固定することができないからである。また、電池のように、内部に収納する発電要素を外力からの影響をなく必要がある場合にも有用である。 The inner peripheral surface of the tubular member can have a reduced diameter portion that restricts the entry of the lid member when the lid member abuts and can position the tubular member in the opening direction. This is because, for example, a bottomed tubular member cannot be fixed from the inside of the tubular member for positioning of the lid member. It is also useful when a power generation element housed inside is required to have no influence from external force, such as a battery.
本発明の管状部材の製造方法は重ね合わせ工程と巻回工程と座屈防止工程とその他の工程とを有する。重ね合わせ工程は管状部材と蓋部材とを重ね合わせる工程である。蓋部材の一端部の内周面に蓋部材を挿入・固定する工程である。 The method for manufacturing a tubular member of the present invention includes an overlapping process, a winding process, a buckling prevention process, and other processes. The overlapping process is a process of overlapping the tubular member and the lid member. This is a step of inserting and fixing the lid member on the inner peripheral surface of one end of the lid member.
巻回工程は、重なり合った巻き締め部の一端部側から押し型により押圧を行い、巻き締め部を順次ロールさせる工程である。押し型は断面形状が巻き締め部を巻き締めした後の外形と同程度の断面形状をもつ曲線からなり巻き締めガイド部をもつ。巻き締め部(特に巻き締めの初期に巻き締めされる巻き締め部の一端部側)が滑らかに滑るように、巻き締めガイド部の断面形状は滑らかな曲線にて構成されることが望ましい。例えば、巻き締めガイド部の断面形状としては半円形状やU字状などが例示できる。 The winding process is a process in which pressing is performed with a pressing die from one end side of the overlapped tightening portions, and the winding portions are sequentially rolled. The pressing die has a winding guide part having a cross-sectional shape made of a curve having a cross-sectional shape similar to that of the outer shape after the winding part is wound. It is desirable that the cross-sectional shape of the winding tightening guide portion is configured with a smooth curve so that the winding tightening portion (especially one end portion side of the tightening portion to be tightened in the initial stage of the tightening) slides smoothly. For example, examples of the cross-sectional shape of the winding guide portion include a semicircular shape and a U-shape.
巻き締め部の一端部側は巻き締めガイド部に当接することで、巻き締めガイド部の断面形状に倣って曲げられていく。巻き締めガイド部は巻き締め部の巻き締めが確実に遂行できるように巻き締め部の要所に配設されている。 One end portion side of the winding tightening portion comes into contact with the winding tightening guide portion and is bent following the cross-sectional shape of the winding tightening guide portion. The winding tightening guide portion is disposed at a main portion of the winding tightening portion so that the winding tightening portion can be reliably tightened.
例えば、管状部材の開口部の形状が直線部分と曲線部分とから成り立っている場合に、直線部よりも曲線部に対応する部位に対して、より多くの巻き締めガイド部を配設することで、より滑らかに巻き締めを行うことができる。可能ならば、巻き締め部の一端部側のすべてに対応する部位に巻き締めガイド部を連続的に延設することが巻き締めの確実性の観点からは望ましい。 For example, when the shape of the opening of the tubular member is composed of a straight portion and a curved portion, more winding tightening guide portions are disposed on the portion corresponding to the curved portion than the straight portion. Winding can be performed more smoothly. If possible, it is desirable from the viewpoint of the reliability of winding tightening to continuously extend the winding tightening guide portion to the part corresponding to all of the one end side of the winding tightening portion.
巻回工程では、巻き締め部(場合によっては管状部材のその他の部分も)に座屈が進行する方向に応力が加えられている。そこで、座屈防止工程として、巻き締め部を支持することで座屈の進行を防止する工程を有する。巻き締め部が管状部材の内側方向に巻回される場合に、本座屈防止工程における巻き締め部の支持は、巻き締め部の外周面に密着する座屈防止金型により行われることができる。 In the winding process, stress is applied to the tightening portion (in some cases, other portions of the tubular member) in a direction in which buckling proceeds. Therefore, the buckling prevention step includes a step of preventing the progress of buckling by supporting the winding portion. When the tightening portion is wound in the inner direction of the tubular member, the support of the tightening portion in the buckling prevention step can be performed by a buckling prevention mold that is in close contact with the outer peripheral surface of the tightening portion. .
その他の工程としては特に限定されず、一般的なその他の処理(例えば、管状部材を形成する工程など)を有することができる。本発明に関係する工程としては前記重ね合わせ工程後、前記巻回工程前に、重なり合った巻き締め部の一端部方向の先端部を巻回方向に応じて縮径又は拡径する工程を有することができる。予め巻き締め部の一端部側に曲げ(縮径又は拡径)を形成することで、巻回工程においてスムーズに巻き締めを行うことができる。具体的には内巻きの場合には縮径を、外巻きの場合には拡径を行うことが望ましい。 The other steps are not particularly limited, and may include other general treatments (for example, a step of forming a tubular member). As a process related to the present invention, after the overlapping process and before the winding process, there is a process of reducing the diameter of the end of the overlapped tightening portion in the direction of one end according to the winding direction. Can do. By forming a bend (reduced diameter or expanded diameter) on one end side of the tightening portion in advance, the tightening can be performed smoothly in the winding process. Specifically, it is desirable to reduce the diameter in the case of inner winding and to increase the diameter in the case of outer winding.
また、管状部材と蓋部材との密着をより完全なものにする目的で、前記巻回工程後、巻回された巻き締め部を管状部材の径方向に押圧して扁平化させる扁平化工程を有することができる。扁平化は対応する形状をもつ押し型を作成し、その押し型にて押圧することで達成できる。 Further, for the purpose of making the adhesion between the tubular member and the lid member more complete, a flattening step of flattening by pressing the wound tightening portion in the radial direction of the tubular member after the winding step is performed. Can have. Flattening can be achieved by creating a pressing die having a corresponding shape and pressing with the pressing die.
本発明の管状部材の製造方法について、以下、図面を参照しながら詳細に説明する。説明に用いる図面は模式図であり、各部の寸法、比率などは必ずしも正確なものではない(特に、部材の大きさに対する板厚など)。 The method for producing a tubular member of the present invention will be described in detail below with reference to the drawings. The drawings used for explanation are schematic diagrams, and the dimensions and ratios of the respective parts are not necessarily accurate (especially, the plate thickness with respect to the size of the members).
図1(a)に示すように、本実施例の管状部材の製造方法を適用する管状部材は一端部が開口する有底の管状部材である缶本体11と蓋部材12とである。缶本体11は、図1(b)の上面図に示すように、一端部に直交する断面が角が丸まった四角である直方体である。一端部近傍には巻き締め部111が設けられ、巻き締め部111の下端には径が縮めてある縮径部112が形成されている。縮径部112より図面上方は板厚が薄くされていることで縮径部112が形成されている。
As shown to Fig.1 (a), the tubular member which applies the manufacturing method of the tubular member of a present Example is the can
蓋部材12は缶本体11の開口部近傍に嵌合できる形状をもつ部材である。蓋部材12は巻き締め部121が設けられ、巻き締め部121の下端には缶本体11の縮径部112が当接して、蓋部材12を開口部から挿入した際にそれ以上、進入できないようになっている。
The
重ね合わせ工程:缶本体11と蓋部材12とを重ね合わせる。蓋部材12は缶本体11の一端部から挿入・嵌合させる。缶本体11の巻き締め部111と蓋部材12の巻き締め部121とは密着して重ね合わされている。
Superposition process: The
縮径工程:図2に示すように、重ね合わせた巻き締め部111、121の一端部側を縮径する工程である。図には示さないが、型内に挿入する前の重ね合わされた缶本体11及び蓋部材12に対して、一端部側から縮径の程度に応じた形状をもつ縮径型を押圧することで縮径する(拡径を行う場合(外巻きの場合)は反対に拡径を行う)。本図では蓋部材12は缶本体11内に挿入される前に巻き締め部121側が縮径されている。
Diameter reduction step: As shown in FIG. 2, this is a step of reducing the diameter of one end of the overlapped tightening
なお、縮径工程により、巻き締め部111、121を縮径しなくても良い場合があり、後述する巻回工程にて併せて、説明する。
In addition, there is a case where it is not necessary to reduce the diameters of the tightening
巻回工程及び座屈防止工程:重ね合わせられた缶本体11及び蓋部材12は座屈防止金型22内に挿入される。その後、上方から押し型21により押圧する。押し型21は、図2及び3に示すように、巻き締め部111、121の一端部側が当接できる巻き締めガイド部212が巻き締め部111、121が設けられている全周にわたって形成されている。巻き締めガイド部212の断面形状は半円形状であり、更に、中心部近傍には突起211が形成されている。押し型21を座屈防止金型22内に挿入すると、巻き締めガイド部212が巻き締め部111、121に当接する。
Winding step and buckling prevention step: The superimposed can
巻き締め部111、121の一端部側は内側に向くように縮径されており、また、巻き締めガイド部212の断面形状が滑らかな半円形状であるので、巻き締め部111、121の一端部側は巻き締めガイド部212の断面形状に倣って内側に曲げられていくことになる。
One end of the tightening
更に、押し型21にて押圧していくと、巻き締めガイド部212内から、巻き締め部111、121の一端部が飛び出すことになる。この場合に、巻き締め部111、121は、座屈防止金型22から離れ、巻き締めガイド部212にて曲げられ続けるので、飛び出した一端部はそのまま巻かれていくことになり、最終的には巻き締めが完成する(図4)。
Further, when the
巻き締め部111、121は、押し型21の進入に伴い、巻き締めガイド部212から拡径方向に応力が加わるが、座屈防止金型22により巻き締め部111、121の外周面から押圧・支持されていることで座屈が防止されている。
The winding
ここで、巻き締め部111、121の一端部側は縮径されているので、特に問題なく巻き締めガイド部212内に進入、巻回されていくが、一端部側が縮径されずにそのままである場合でも巻回工程を進めることができる。例えば、押し型21が座屈防止金型22に接する部分(巻き締めガイド部212の周辺)を鋭角状に形成することで、巻き締め部111、121と座屈防止金型22との間に押し型21を進入させるて巻回させることが可能になる。ここで、缶本体11や蓋部材12の一端部側は切断など行うことで形成されるが、切断時に僅かに縮径する方向に一端部を変形させることで、押し型21を進入させることに資することができる。
Here, since one end portion side of the tightening
扁平化工程:巻き締めが終了した後、押し型21を抜き取り、扁平金型(図略)にて押圧することで巻回した巻き締め部111、121を押しつぶして扁平化する。扁平化することで、缶本体11及び蓋部材12それぞれの巻き締め部111、121の間の密着性が向上する。
Flattening step: After the tightening is finished, the
(変形例1)
なお、扁平型としては押し型として図6に示すような分割された押し型23、24、25を採用することで押し型の抜き取り、扁平型の挿入といった工程が省略できる。押し型23、24、25は同心状の金型でそれぞれ独立して上下動させることができる。
(Modification 1)
In addition, as a flat type | mold, the process of extraction of a push type | mold and insertion of a flat type | mold can be skipped by employ | adopting the divided | segmented press type |
押し型23、24、25を用い、図2及び図3と同様にして巻き締め部111、121を巻回した後、押し型24を独立して下方向に動かすことで、図7に示すように、巻回した巻き締め部111、121を扁平化することができる。
As shown in FIG. 7, after the winding
(変形例2)
更に、図8に示すような分割された押し型26、27、28を採用することで、縮径工程も同一の押し型で行うことができる。つまり、座屈防止金型22から、巻き締め部111、121の一端部側を僅かに突出させた状態で分割された押し型にて押圧する。分割された押し型のうち、押し型28がまず巻き締め部111、121の一端部側に当接し、一端部側を縮径する(縮径工程)。押し型28の外径は座屈防止金型22の開口部より大きいので、座屈防止金型22内に挿入される前に停止される。
(Modification 2)
Furthermore, by adopting the divided pressing dies 26, 27, and 28 as shown in FIG. 8, the diameter reduction process can be performed with the same pressing dies. In other words, the buckling
巻き締め部111、121は、その後、金型26及び27の組み合わせにより、内側に曲がる方向に付勢され続け、巻回が終了した後に、金型27のみで押圧して扁平化工程も完了する(図略)。ここで、巻き締め部111、121は、金型27により、内側に曲げる方向に付勢され、金型26がなくても巻回工程が継続できる。
Thereafter, the tightening
11…缶本体 111…巻き締め部 112…縮径部
12…蓋部材 121…巻き締め部
21…押し型 211…突起 212…巻き締めガイド部
23、24、25…押し型(扁平型を兼ねている)
26、27、28…押し型(縮径工程用の型及び扁平型を兼ねている)
22…座屈防止金型
DESCRIPTION OF
26, 27, 28... Push mold (also serves as a mold for a diameter reduction process and a flat mold)
22 ... Buckling prevention mold
Claims (10)
前記筒状部材の前記一端部と前記蓋部材とは少なくとも巻き締めされる部分において重なり合って密着する形状をもつ巻き締め部をそれぞれにもち、
該筒状部材及び該蓋部材それぞれの該巻き締め部を重ね合わせる工程と、
押し型を可動型、座屈防止金型を固定型とする金型により、
断面形状が、該巻き締め部を巻き締めした後の外形と同程度の形状をもつ曲線からなり、該巻き締め部の該一端部側がある部位に概ね沿って配設される巻き締めガイド部をもつ該押し型にて、該一端部が開口する方向から該巻き締め部に当接・押圧することで、重なり合った該巻き締め部の該一端部側が該押し型の該断面形状に沿って巻回される巻回工程と、
該巻回工程において、該座屈防止金型で該巻き締め部を支持することで座屈を防ぐ工程と、を有することを特徴とする該一端部に該蓋部材を固定した管状部材の製造方法。 A method of winding a cylindrical member having at least one end opened and a lid member fixed to the one end,
The one end portion of the tubular member and the lid member each have a tightening portion having a shape that overlaps and closely adheres at a portion to be tightened,
Superimposing the winding portions of the tubular member and the lid member,
With a mold that makes the push mold movable and the buckling prevention mold fixed,
A winding guide portion that has a cross-sectional shape made of a curve having a shape similar to that of the outer shape after the tightening portion is tightened, and that is disposed substantially along a portion where the one end side of the tightening portion is located. at the press-type having, by the one end to pressed into contact in the winding-out fastening portion in a direction opening the one end side of the overlapped take--out fastening portion along the pusher type the cross-sectional shape winding A winding process to be rotated;
A step of preventing buckling by supporting the tightening portion with the buckling prevention mold in the winding step, and manufacturing the tubular member having the lid member fixed to the one end portion Method.
該管状部材の該一端部は該蓋部材により封止されている請求項1〜3のいずれかに記載の管状部材の製造方法。 The winding portion is formed over the entire circumference of the one end portion of the tubular member and the lid member,
The method for manufacturing a tubular member according to any one of claims 1 to 3 , wherein the one end portion of the tubular member is sealed with the lid member.
前記座屈防止工程における前記巻き締め部の支持は、該巻き締め部の外周面に密着する座屈防止金型により行われる請求項1〜6のいずれかに記載の管状部材の製造方法。 The tightening portion is wound in the inner direction of the tubular member,
The method of manufacturing a tubular member according to any one of claims 1 to 6 , wherein the support of the tightening portion in the buckling prevention step is performed by a buckling prevention mold that is in close contact with an outer peripheral surface of the tightening portion.
前記筒状部材の前記一端部と前記蓋部材とは少なくとも巻き締めされる部分において重なり合って密着する形状をもつ巻き締め部をそれぞれにもち、それぞれの該巻き締め部を重ね合わせた状態の該筒状部材及び該蓋部材に対して、
断面形状が、該巻き締め部を巻き締めした後の外形と同程度の形状をもつ曲線からなり、且つ、該巻き締め部の該一端部側がある部位に概ね沿って配設される巻き締めガイド部をもち、該一端部が開口する方向から該巻き締め部に当接・押圧することで、重なり合った該巻き締め部の該一端部側を該押し型の該断面形状に沿って巻回する可動型である押し型と、
該押し型が巻き締めする方向と反対の方向から該巻き締め部を支持することで座屈を防ぐ固定型である座屈防止金型と、を有することを特徴とする該一端部に該蓋部材を固定した管状部材の製造装置。 An apparatus for winding up a cylindrical member having at least one end opened and a lid member fixed to the one end,
The one end portion of the cylindrical member and the lid member each have a tightening portion having a shape that overlaps and adheres at least in a portion to be tightened, and the tube in a state in which the respective tightening portions are overlapped. For the shaped member and the lid member,
A winding guide in which the cross-sectional shape is a curve having a shape similar to that of the outer shape after the tightening portion is wound, and the winding tightening guide is arranged substantially along a portion where the one end side of the tightening portion is located The one end side of the overlapping tightening portion is wound along the cross-sectional shape of the pressing die by contacting and pressing the winding tightening portion from the direction in which the one end portion opens. A movable push mold,
A buckling prevention mold that is a fixed mold for preventing buckling by supporting the tightening portion from a direction opposite to the direction in which the pressing mold is tightened; An apparatus for manufacturing a tubular member with a fixed member.
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