JP2006150426A - Apparatus for manufacturing can body and method for manufacturing can body - Google Patents

Apparatus for manufacturing can body and method for manufacturing can body Download PDF

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JP2006150426A
JP2006150426A JP2004347251A JP2004347251A JP2006150426A JP 2006150426 A JP2006150426 A JP 2006150426A JP 2004347251 A JP2004347251 A JP 2004347251A JP 2004347251 A JP2004347251 A JP 2004347251A JP 2006150426 A JP2006150426 A JP 2006150426A
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cylindrical body
bottomed cylindrical
opening
neck
peripheral surface
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JP4637555B2 (en
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Masahiro Hosoi
正宏 細井
Fumihiko Usui
文彦 臼井
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing can body in which the formation of a can body of fresh specifications or the like is more easily made possible by reducing the quantity of forming tools, an improvement in production efficiency is achieved and the man-hours for maintenance can be reduced, and an apparatus for manufacturing the can body. <P>SOLUTION: The apparatus for manufacturing the can body is equipped with at least a plurality of neck-in dies 10, in which a lubricating oil coating application means 13 for applying a lubricating oil to an aperture of a bottomed cylindrical body W is disposed between an outer peripheral surface of a core section 11 in at least one of another dies 10 excluding the dies 10 for applying diameter reduction processing in the final among the neck-in dies 10 and an inner peripheral surface of a core section 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、缶体の製造装置および缶体の製造方法に関するものである。   The present invention relates to a can body manufacturing apparatus and a can body manufacturing method.

従来から、金属製の缶体は、一般にＤＩ加工により形成された有底筒状体に各種成形加工が施されて形成されている。
このような成形加工を施すための缶体の製造装置として、従来から例えば下記特許文献１に示されるような、有底筒状体を保持する保持装置と、前記有底筒状体の開口部に成形加工を施す複数の成形ツールが備えられたツール保持部と、前記保持装置および前記ツール保持部の少なくとも一方に連結されて互いが接近離間し、かつ軸線回りに相対的に間欠的に回転移動するように駆動する構成とされた駆動部とが備えられた構成が知られている。この構成において、前記ツール保持部を前記保持装置に対して相対的に接近移動させたときに、前記成形ツールによって前記有底筒状体に成形加工を施し、次いで、後退移動させたときに、前記ツール保持部を前記保持装置に対して相対的に所定角度だけ回転移動させる。その後、前記接近離間および回転移動を繰り返すことによって、順次有底筒状体に成形加工を施して缶体に成形する構成が知られている。 Conventionally, metal cans have been formed by subjecting a bottomed cylindrical body generally formed by DI processing to various forming processes.
Conventionally, as a can manufacturing apparatus for performing such a forming process, for example, as shown in Patent Document 1 below, a holding device that holds a bottomed cylindrical body, and an opening of the bottomed cylindrical body A tool holding portion provided with a plurality of forming tools that perform forming processing, and connected to at least one of the holding device and the tool holding portion so as to approach and separate from each other and rotate relatively intermittently around the axis. 2. Description of the Related Art A configuration including a drive unit configured to drive so as to move is known. In this configuration, when the tool holding portion is moved relatively close to the holding device, the bottomed cylindrical body is subjected to molding by the molding tool, and then moved backward. The tool holding portion is rotated and moved by a predetermined angle relative to the holding device. After that, by repeating the approach and separation and rotational movement, a configuration is known in which a bottomed cylindrical body is sequentially molded into a can body.

ところで、前記ツール保持部には、一般に前記成形ツールとして、有底筒状体の開口部に縮径加工を施すネックイン金型が複数備えられており、該ネックイン金型は、前記有底筒状体の開口部からその内側に挿入されて配置される中子部と、円筒状に形成されてその内側に前記有底筒状体の開口部が挿入される外子部とを備えるとともに、前記有底筒状体に対して相対的に前進移動する過程において、前記外子部の内周面が前記有底筒状体の開口部の外周面に摺接しながらこれを径方向内方に向けて押圧し、かつ前記中子部の外周面が前記開口部の内周面を支持することによって前記縮径加工を施す構成とされている。   By the way, the tool holding portion is generally provided with a plurality of neck-in molds for reducing the diameter of the opening of the bottomed cylindrical body as the molding tool, and the neck-in mold is provided with the bottomed mold. A core portion that is inserted and disposed inside the opening of the cylindrical body, and an outer core portion that is formed in a cylindrical shape and into which the opening of the bottomed cylindrical body is inserted. In the process of moving forward relative to the bottomed cylindrical body, the inner peripheral surface of the outer core portion is slidably in contact with the outer peripheral surface of the opening of the bottomed cylindrical body, and this is radially inward. And the outer peripheral surface of the core portion supports the inner peripheral surface of the opening portion to perform the diameter reduction processing.

このような縮径加工においては、有底筒状体の前記開口部の内外周面と前記中子部の外周面および前記外子部の内周面とが引っ掛かる等して、良好な成形加工が阻害されることを防ぐために、有底筒状体の開口部に潤滑油を塗布することがなされている。これを実現するための手段として、例えば、ツール保持部において、ネックイン金型の配設位置よりも前の加工位置に、前記成形ツールの一つとして、有底筒状体の開口部に潤滑油を塗布するための潤滑油塗布用のツールを他のツールと独立して設けたり、あるいは複数のネックイン金型が、互いに隣接するように前記ツール保持部に工程順に備えられている場合には、その中間地点に前記潤滑油塗布用のツールを設けたりする構成が採用されている。   In such a diameter reduction processing, the inner and outer peripheral surfaces of the opening of the bottomed cylindrical body, the outer peripheral surface of the core portion, and the inner peripheral surface of the outer core portion are hooked, etc. In order to prevent this from being hindered, lubricating oil is applied to the opening of the bottomed cylindrical body. As a means for realizing this, for example, in the tool holding portion, in the processing position before the arrangement position of the neck-in mold, as one of the forming tools, the opening of the bottomed cylindrical body is lubricated. When a lubricant application tool for applying oil is provided independently of other tools, or when a plurality of neck-in molds are provided in the tool holder in order of processes so as to be adjacent to each other. Employs a configuration in which a tool for applying the lubricating oil is provided at an intermediate point.

これにより、ネックイン金型によって前記縮径加工を施す直前、あるいは前記縮径加工が施される過程で、前記開口部に塗布されていた潤滑油が少なくなったときに、有底筒状体の前記開口部に潤滑油を塗布することが可能になり、良好な成形加工を実現できるようになっている。
特開２００４−１２３２３１号公報 As a result, the bottomed cylindrical body immediately before the diameter reducing process is performed by the neck-in mold or when the lubricating oil applied to the opening is reduced in the course of the diameter reducing process. It is possible to apply a lubricating oil to the opening, and a good molding process can be realized.
Japanese Patent Laid-Open No. 2004-123231

しかしながら、このような構成では、前記成形ツールとして潤滑油塗布用のツールが他のツールと独立して設けられ、前記縮径加工を施すための成形ツールがネックイン金型と潤滑油塗布用のツールとの２種類になるので、ツール保持部内における縮径加工のための占有スペースが、他の成形加工を施すための成形ツールと比べて大きくなり、このため、例えば、新仕様の缶体を形成するのに伴い、新たな成形ツールをツール保持部に取り付けようとしたときに、その取り付け用のスペースが不足する等の制限を受け易いという問題があった。また、有底筒状体はその開口部に潤滑油が塗布されるためだけに、前記接近離間および回転移動されなければならず、高効率生産を阻害するおそれもあった。さらに、成形ツールの数量が多い分だけ装置のメンテナンス工数も多くなるおそれがあった。   However, in such a configuration, a tool for applying lubricant as the forming tool is provided independently of other tools, and the forming tool for performing the diameter reduction processing is used for the neck-in mold and the lubricant application. Because it becomes two types of tools, the occupied space for the diameter reduction processing in the tool holding part becomes larger than the molding tools for performing other molding processes. For this reason, for example, a new specification can body As it is formed, there is a problem that when a new molding tool is to be attached to the tool holding portion, it is likely to be restricted such as a lack of space for attachment. In addition, the bottomed cylindrical body has to be moved toward and away from and rotated only because the lubricating oil is applied to the opening, which may hinder high-efficiency production. Furthermore, there is a possibility that the number of man-hours for maintenance of the apparatus increases as the number of molding tools increases.

本発明は、このような事情を考慮してなされたもので、成形ツールの数量を減らすことにより、新たな仕様の缶体を形成する場合等にその対応を容易にするとともに、生産効率の向上を図ることができ、かつメンテナンス工数も低減させることが可能になる缶体の製造装置および缶体の製造方法を提供することを目的とする。   The present invention has been made in consideration of such circumstances, and by reducing the number of molding tools, it is possible to easily cope with the case where a can body having a new specification is formed, and to improve production efficiency. An object of the present invention is to provide a can body manufacturing apparatus and a can body manufacturing method capable of reducing the maintenance man-hours.

このような課題を解決して、前記目的を達成するために、本発明の缶体の製造装置は、ＤＩ加工により形成された有底筒状体を保持する保持装置と、該有底筒状体に成形加工を施す複数の成形ツールを有するツール保持部とを備え、該ツール保持部に工程順に設けられた前記各成形ツールによって順次前記有底筒状体に対して加工を施すことにより缶体に成形する構成とされた缶体の製造装置であって、前記ツール保持部には、前記成形ツールとして、前記有底筒状体の開口部に縮径加工を施すネックイン金型が複数備えられ、これらの金型の少なくとも一部は、それぞれのネックイン金型が互いに隣接するように前記ツール保持部に前記工程順に備えられ、該ネックイン金型は、前記有底筒状体の開口部からその内側に挿入されて配置される中子部と、円筒状に形成されてその内側に前記有底筒状体の開口部が挿入される外子部とを備えるとともに、前記有底筒状体に対して相対的に前進移動する過程において、前記外子部の内周面が前記有底筒状体の開口部の外周面に摺接しながらこれを径方向内方に向けて押圧し、かつ前記中子部の外周面が前記開口部の内周面を支持することによって前記縮径加工を施す構成とされ、前記一部のネックイン金型のうち、最後に前記縮径加工を施す金型を除く他の金型の少なくとも一つにおける、前記中子部の外周面と前記外子部の内周面との間には、前記有底筒状体の開口部に潤滑油を塗布する潤滑油塗布手段が配設されていることを特徴とする。   In order to solve such problems and achieve the above object, the can manufacturing apparatus of the present invention includes a holding device for holding a bottomed cylindrical body formed by DI processing, and the bottomed cylindrical shape. A tool holder having a plurality of molding tools for molding the body, and by sequentially processing the bottomed cylindrical body with the molding tools provided in the tool holder in order of steps. A can body manufacturing apparatus configured to be molded into a body, wherein the tool holding portion includes a plurality of neck-in dies for reducing the diameter of an opening of the bottomed tubular body as the molding tool. And at least a part of the molds are provided in the tool holding unit in the order of the processes so that the respective neck-in molds are adjacent to each other, and the neck-in molds are formed of the bottomed cylindrical body. Inserted and placed inside the opening A core portion and an outer core portion that is formed in a cylindrical shape and into which the opening of the bottomed tubular body is inserted are moved forward relative to the bottomed tubular body. In the process, while the inner peripheral surface of the outer core portion is in sliding contact with the outer peripheral surface of the opening of the bottomed cylindrical body, the outer peripheral surface is pressed radially inward, and the outer peripheral surface of the core portion is The diameter reduction process is performed by supporting an inner peripheral surface of the opening, and at least one of the other neck molds excluding the mold to be subjected to the diameter reduction process at last. In one, between the outer peripheral surface of the core portion and the inner peripheral surface of the outer core portion, lubricating oil application means for applying lubricating oil to the opening of the bottomed cylindrical body is disposed. It is characterized by being.

また、本発明の缶体の製造方法は、請求項１または２に記載の缶体の製造装置を用いて、前記有底筒状体を缶体に成形することを特徴とする。   Moreover, the manufacturing method of the can body of this invention forms the said bottomed cylindrical body into a can body using the manufacturing apparatus of the can body of Claim 1 or 2. It is characterized by the above-mentioned.

本発明に係る缶体の製造装置および缶体の製造方法によれば、前記中子部の外周面と前記外子部の内周面との間に、前記潤滑油塗布手段が備えられているので、ネックイン金型により前記縮径加工を施すときに、その次のネックイン金型による前記縮径加工において、前記開口部と前記中子部および外子部との良好な滑り性を確保するために、予め前記開口部に潤滑油を塗布することができる。したがって、それぞれのネックイン金型が互いに隣接するように前記ツール保持部に前記工程順に備えられた前記一部のネックイン金型において、前記工程順の中間地点に、潤滑油塗布用のツールをネックイン金型と独立して配設する必要がなく、ツール保持部内における前記縮径加工のための占有スペースを抑えることが可能になり、例えば新たな仕様の缶体を形成する場合等に、容易に対応することができる。また、前記縮径加工および潤滑油の塗布の双方を同時に実施することが可能になり、缶体の高効率生産を実現することができる。さらに、前記成形ツールの数量を抑えられることから、装置のメンテナンス工数の低減を図ることができる。   According to the can body manufacturing apparatus and the can body manufacturing method according to the present invention, the lubricating oil applying means is provided between the outer peripheral surface of the core portion and the inner peripheral surface of the outer core portion. Therefore, when the diameter-reducing process is performed by the neck-in mold, in the diameter-reducing process by the next neck-in mold, good slipping between the opening, the core part, and the outer part is ensured. In order to do this, lubricating oil can be applied to the opening in advance. Accordingly, in the part of the neck-in molds provided in the process order in the tool holding portion so that the respective neck-in molds are adjacent to each other, a tool for applying a lubricant is provided at an intermediate point in the process order. It is not necessary to arrange independently from the neck-in mold, and it becomes possible to suppress the occupied space for the diameter reduction processing in the tool holding portion, for example, when forming a can body of a new specification, etc. It can be easily handled. Moreover, it becomes possible to implement both the said diameter reduction process and application | coating of lubricating oil simultaneously, and can implement | achieve highly efficient production of a can. Furthermore, since the number of the molding tools can be reduced, the maintenance man-hours of the apparatus can be reduced.

ここで、前記潤滑油塗布手段により、前記有底筒状体が相対的に前進端位置に到達したとき、または前記ネックイン金型を前記有底筒状体に対して相対的に後退移動させ、前記有底筒状体の開口部を該金型から抜き出すまでの間に、該開口部に潤滑油を塗布することが望ましい。
この場合、前記潤滑油塗布手段を有するネックイン金型において、潤滑油が塗布された後の有底筒状体の開口部が、中子部の外周面および外子部の内周面に対向して移動する距離を最小限に抑えることが可能になり、前記塗布された潤滑油が中子部の外周面および外子部の内周面によって拭われることを抑制することが可能になる。したがって、前記潤滑油を前記開口部に確実に保持させて、この有底筒状体を次のネックイン金型に供することができる。 Here, when the bottomed cylindrical body reaches the forward end position relatively by the lubricating oil application means, or the neck-in mold is moved backward relative to the bottomed cylindrical body. It is desirable to apply lubricating oil to the opening until the opening of the bottomed cylindrical body is extracted from the mold.
In this case, in the neck-in mold having the lubricating oil application means, the opening of the bottomed cylindrical body after the lubricating oil is applied faces the outer peripheral surface of the core portion and the inner peripheral surface of the outer core portion. Thus, the moving distance can be minimized, and the applied lubricating oil can be suppressed from being wiped by the outer peripheral surface of the core portion and the inner peripheral surface of the outer portion. Accordingly, the bottomed cylindrical body can be used for the next neck-in mold while the lubricating oil is reliably held in the opening.

以下、本発明に係る缶体の製造装置および缶体の製造方法の一実施形態を、図１から図４を参照しながら説明する。本実施形態では、缶体としてボトル缶を例に挙げて以下説明する。この製造装置２０は、図３に示すように、ＤＩ加工により形成された有底筒状体Ｗを保持するワーク保持部３０と、この有底筒状体Ｗに各種成形加工を施す成形ツール４２を保持するツール保持部４０と、両保持部３０、４０を駆動する駆動部２２とを備えている。これらの保持部３０、４０は、有底筒状体Ｗを保持するワーク保持側と、成形ツール４２を保持するツール保持側とが対向するように配設されている。  Hereinafter, an embodiment of a can body manufacturing apparatus and a can body manufacturing method according to the present invention will be described with reference to FIGS. 1 to 4. In the present embodiment, a bottle can is taken as an example of a can body and will be described below. As shown in FIG. 3, the manufacturing apparatus 20 includes a work holding unit 30 that holds a bottomed cylindrical body W formed by DI processing, and a molding tool 42 that performs various molding processes on the bottomed cylindrical body W. A tool holding unit 40 for holding the holding unit 30 and a driving unit 22 for driving both holding units 30 and 40. These holding portions 30 and 40 are disposed so that the work holding side that holds the bottomed cylindrical body W and the tool holding side that holds the forming tool 42 face each other.

ワーク保持部３０は、有底筒状体Ｗをその開口部がツール保持部４０の成形ツール４２と対向するように保持する構成とされている。さらに本実施形態のワーク保持部３０は、前記駆動部２２に連結された支持軸２１にその軸線回りに間欠回転可能に支持された円盤状のワーク保持部本体３１を備えるとともに、該本体３１の、ツール保持部４０と対向する表面における外周縁部に、有底筒状体Ｗを保持する保持装置３２が複数環状に配列された構成とされている。なお、本実施形態の保持装置３２は、有底筒状体Ｗの開口部とは非接触で、かつ該筒状体Ｗの底部を把持することによって、有底筒状体Ｗを保持するようになっている。また、図４では、複数の保持装置３２の一部を図示し、残りの保持装置３２の図示は省略している。   The work holding unit 30 is configured to hold the bottomed cylindrical body W such that the opening thereof faces the forming tool 42 of the tool holding unit 40. Furthermore, the work holding unit 30 of the present embodiment includes a disk-shaped work holding unit main body 31 supported on the support shaft 21 connected to the driving unit 22 so as to be intermittently rotatable about the axis thereof. A plurality of holding devices 32 that hold the bottomed cylindrical body W are arranged in a ring shape on the outer peripheral edge portion of the surface facing the tool holding portion 40. Note that the holding device 32 of the present embodiment holds the bottomed cylindrical body W by holding the bottom of the cylindrical body W without being in contact with the opening of the bottomed cylindrical body W. It has become. In FIG. 4, some of the plurality of holding devices 32 are illustrated, and the remaining holding devices 32 are not illustrated.

ツール保持部４０は、支持軸２１にその軸線方向に進退可能に支持された円盤状のツール保持部本体４１を備えるとともに、該本体４１の、ワーク保持部３０と対向する表面における外周縁部に、複数の成形ツール４２が、前記ワーク保持部３０における保持装置３２の配設ピッチと同等のピッチで環状に配列された構成とされている。前記複数の成形ツール４２としては、有底筒状体Ｗの開口部に縮径加工を施すための後述する複数のネックイン金型１０や、該金型により有底筒状体Ｗの開口部に形成された口金部に雄ねじ部を形成するためのねじ成形用ツール、有底筒状体Ｗの開口部に潤滑油を塗布する潤滑油塗布用ツール、有底筒状体Ｗの開口端を切削するトリミング装置、該筒状体Ｗの開口端部にカール部を形成するためのカール部形成用ツール等があり、前記ワーク保持部３０により対向させられた有底筒状体Ｗに各加工段階に応じた加工を施すことができるように、これらの成形ツール４２がツール保持部本体４１に工程順に環状配置された構成とされている。   The tool holding portion 40 includes a disk-shaped tool holding portion main body 41 supported by the support shaft 21 so as to be able to advance and retreat in the axial direction, and on the outer peripheral edge portion of the main body 41 on the surface facing the work holding portion 30. The plurality of forming tools 42 are arranged in an annular shape at a pitch equivalent to the arrangement pitch of the holding devices 32 in the work holding unit 30. As the plurality of molding tools 42, a plurality of neck-in molds 10, which will be described later, for reducing the diameter of the opening of the bottomed cylindrical body W, or the opening of the bottomed cylindrical body W by the mold. A screw forming tool for forming a male screw part in the base part formed on the base, a lubricant application tool for applying lubricant to the opening of the bottomed cylindrical body W, and an open end of the bottomed cylindrical body W. There is a trimming device for cutting, a curling part forming tool for forming a curled part at the opening end of the cylindrical body W, etc., and each processing to the bottomed cylindrical body W opposed by the work holding part 30 These forming tools 42 are configured to be annularly arranged in the tool holder main body 41 in the order of processes so that processing according to the stages can be performed.

なお、前記複数のネックイン金型１０は、ツール保持部本体４１の複数個所に断続的に配設されており、それぞれの個所においては、互いに隣接するように前記工程順に連続して、または単独で配設され、これらの各個所の間を埋めるように前述したトリミング装置やねじ成形用ツール等が配設されている。また、前記潤滑油塗布用ツールは、互いに隣接するように前記工程順に連続して配設された複数のネックイン金型１０については、最初の縮径加工を施す金型１０の直前に、また前記単独で配設されたネックイン金型１０についても、その直前にそれぞれ配設されている。   The plurality of neck-in molds 10 are intermittently disposed at a plurality of locations on the tool holding portion main body 41, and at each location, the plurality of neck-in dies 10 are consecutively arranged in the order of the processes so as to be adjacent to each other. The above-described trimming device, screw forming tool, and the like are disposed so as to fill the space between these portions. In addition, the plurality of neck-in molds 10 that are arranged in the order of the processes so as to be adjacent to each other may be provided immediately before the mold 10 that is subjected to the first diameter reduction processing. Each of the neck-in molds 10 disposed independently is also disposed immediately before that.

支持軸２１の軸線を回転中心とするワーク保持部３０（ワーク保持部本体３１）の間欠的な回転停止位置は、開口部をツール保持部４０側に向けた各有底筒状体Ｗの缶軸が各成形ツール４２の中心軸にそれぞれ一致するように設定されて、駆動部２２によるワーク保持部本体３１の間欠的回転によって、各有底筒状体Ｗは次工程用の各成形ツール４２に対向する位置に回転移動させられて、次の段階の加工が施される構成とされている。つまり、ツール保持部４０が前進してワーク保持部３０とツール保持部４０とが互いに接近したときに、各成形ツール４２が各工程に応じた加工を有底筒状体Ｗに施し、両保持部３０、４０が互いに離間したときに各有底筒状体Ｗに次工程用の成形ツール４２が対向するようにワーク保持部３０が回転移動するようになっている。このように、両保持部３０、４０が接近して加工を行い、離間および回転するという動作が繰り返されることにより、有底筒状体Ｗに肩部および口金部等が順次形成されてボトル缶１に成形される構成とされている。   The intermittent rotation stop position of the work holding part 30 (work holding part main body 31) centering on the axis of the support shaft 21 is the can of each bottomed cylindrical body W with the opening part facing the tool holding part 40 side. Each bottomed cylindrical body W is set to each molding tool 42 for the next process by setting the axis to coincide with the central axis of each molding tool 42 and intermittently rotating the work holding unit main body 31 by the drive unit 22. It is set as the structure which is rotated and moved to the position which opposes, and the process of the next step is given. That is, when the tool holding unit 40 moves forward and the workpiece holding unit 30 and the tool holding unit 40 approach each other, each forming tool 42 performs processing corresponding to each process on the bottomed cylindrical body W, and holds both of them. When the parts 30 and 40 are separated from each other, the work holding part 30 is rotated so that the molding tool 42 for the next process faces the bottomed cylindrical body W. In this way, by repeating the operations in which the holding portions 30 and 40 approach each other, perform separation, and rotation, the shoulder portion and the base portion are sequentially formed on the bottomed cylindrical body W, and the bottle can 1 to be molded.

ところで、前記ネックイン金型１０は、図１および図２に示すように、有底筒状体Ｗの開口部からその内側に挿入されて配置される中子部１１と、円筒状に形成されてその内側に有底筒状体Ｗの開口部が挿入される外子部１２とを備えるとともに、有底筒状体Ｗに対して前進移動する過程において、外子部１２の先端部内周面（以下、「押圧部」という）１２ａが有底筒状体Ｗの開口部の外周面に摺接しながらこれを径方向内方に向けて押圧し、かつ中子部１１の先端部外周面が前記開口部の内周面を支持することによって前記縮径加工を施す構成とされている。そして、有底筒状体Ｗの開口部のうち、前記押圧部１２ａを通過した部分の内外周面は、中子部１１の外周面および外子部１２の内周面に案内されるようになっている。   By the way, as shown in FIGS. 1 and 2, the neck-in mold 10 is formed in a cylindrical shape with a core portion 11 that is inserted and arranged inside the opening of the bottomed cylindrical body W. And the outer core portion 12 into which the opening of the bottomed cylindrical body W is inserted, and in the process of moving forward relative to the bottomed cylindrical body W, the inner peripheral surface of the distal end portion of the outer core portion 12 12a (hereinafter referred to as “pressing portion”) presses the outer peripheral surface of the bottomed tubular body W in the radial direction while slidingly contacting the outer peripheral surface of the bottomed cylindrical body W, and the outer peripheral surface of the tip portion of the core portion 11 The diameter reduction processing is performed by supporting the inner peripheral surface of the opening. And the inner and outer peripheral surface of the part which passed the said press part 12a among the opening parts of the bottomed cylindrical body W is guided to the outer peripheral surface of the core part 11 and the inner peripheral surface of the outer core part 12. It has become.

なお、中子部１１および外子部１２はともに円筒状とされ、中子部１１は外子部１２の内側に該外子部１２と同軸的に配設されている。また、中子部１１の内側１１ａは、図示しないエア供給手段と連結されており、このネックイン金型１０による縮径加工の際に、有底筒状体Ｗの内側底部に向けてエアを供給できるようになっている。すなわち、前記縮径加工の際に、有底筒状体Ｗに所定の内圧をかけることができるようになっている。以上の構成は、ツール保持部本体４１に配設された全てのネックイン金型１０に共通の構成である。   The core portion 11 and the outer core portion 12 are both cylindrical, and the core portion 11 is disposed coaxially with the outer core portion 12 inside the outer core portion 12. Further, the inner side 11 a of the core part 11 is connected to an air supply means (not shown), and air is directed toward the inner bottom part of the bottomed cylindrical body W during the diameter reduction processing by the neck-in mold 10. It can be supplied. That is, a predetermined internal pressure can be applied to the bottomed cylindrical body W during the diameter reduction processing. The above configuration is a configuration common to all the neck-in molds 10 arranged in the tool holding unit main body 41.

ここで、ツール保持部本体４１に備えられた全てのネックイン金型１０の中で、互いに隣接するように前記工程順に連続して配設された複数のネックイン金型１０については、これらの金型１０のうち、最後に前記縮径加工を施す金型１０を除く他の金型１０の少なくとも一つにおいて、中子部１１の外周面と外子部１２の内周面との間に、有底筒状体Ｗの開口部に潤滑油を塗布する潤滑油塗布手段１３が配設されている。すなわち、前記工程順に連続して配設された複数のネックイン金型１０のうち、前記工程順の中間地点に位置するネックイン金型１０に潤滑油塗布手段１３が備えられている。   Here, among all the neck-in molds 10 provided in the tool holding part main body 41, the plurality of neck-in molds 10 which are continuously arranged in the order of the processes so as to be adjacent to each other are as follows. In at least one of the molds 10 other than the mold 10 that is subjected to the diameter reduction process at the end, the gap between the outer peripheral surface of the core portion 11 and the inner peripheral surface of the outer core portion 12. The lubricating oil application means 13 for applying the lubricating oil to the opening of the bottomed cylindrical body W is disposed. In other words, among the plurality of neck-in molds 10 that are continuously arranged in the order of the processes, the lubricant application means 13 is provided in the neck-in mold 10 located at the intermediate point in the order of the processes.

この潤滑油塗布手段１３は、例えばフェルトや不職布等といった柔軟性がありかつ含液性のある材質によりリング状に形成されている。そして、該リング状に形成された潤滑油塗布手段１３の内径部が、中子部１１の外周面に形成された溝部１１ｂに嵌め込まれ、潤滑油塗布手段１３の外径部が、前記溝部１１ｂと対向する部分の外子部１２の内周面に形成された溝部１２ｂに嵌め込まれて、ネックイン金型１０に配設されている。   The lubricating oil applying means 13 is formed in a ring shape from a flexible and liquid-containing material such as felt or unemployed cloth. And the inner diameter part of the lubricating oil application means 13 formed in the ring shape is fitted into the groove part 11b formed on the outer peripheral surface of the core part 11, and the outer diameter part of the lubricating oil application means 13 is the groove part 11b. Is fitted in a groove 12b formed on the inner peripheral surface of the outer core portion 12 at a portion opposite to the outer core portion 12, and is disposed in the neck-in mold 10.

この構成において、外子部１２の外周面には前記溝部１２ｂに連通する給油孔１２ｃが穿設されており、これらの給油孔１２ｃは例えばニップル等を介して図示しない潤滑油供給手段と連結されるようになっている。また、給油孔１２ｃは、図２に示すように、外子部１２の周方向に互いに等間隔をあけて複数穿設されており、これらの給油孔１２ｃの全てが前記潤滑油供給手段と連結された構成とされている。これにより、前記潤滑油供給手段からの潤滑油が複数の給油孔１２ｃを介して潤滑油塗布手段１３に向けて供給され、この潤滑油が潤滑油塗布手段１３に含浸されるようになっている。なお、前記潤滑油としては、例えばパーム油、食用油、水添食用油、ペトロラタム，ポリエチレンワックス、合成パラフィン、ノルマルブチルステアレート等の１種類または２種類以上の混合物が挙げられる。また、本実施形態では、全ての給油孔１２ｃは同形同大とされている。   In this configuration, oil supply holes 12c communicating with the groove 12b are formed in the outer peripheral surface of the outer core part 12, and these oil supply holes 12c are connected to a lubricating oil supply means (not shown) via a nipple or the like, for example. It has become so. Further, as shown in FIG. 2, a plurality of oil supply holes 12c are formed at equal intervals in the circumferential direction of the outer core portion 12, and all of these oil supply holes 12c are connected to the lubricating oil supply means. It is set as the structure. As a result, the lubricating oil from the lubricating oil supplying means is supplied toward the lubricating oil applying means 13 through the plurality of oil supply holes 12c, and the lubricating oil applying means 13 is impregnated. . Examples of the lubricating oil include one or a mixture of two or more of palm oil, edible oil, hydrogenated edible oil, petrolatum, polyethylene wax, synthetic paraffin, normal butyl stearate, and the like. Moreover, in this embodiment, all the oil supply holes 12c are made into the same shape and the same size.

ここで、潤滑油塗布手段１３は、ワーク保持部３０と対向する表面（以下、「下面」という）が、ネックイン金型１０（ツール保持部本体４１）が有底筒状体Ｗに対して前進端位置に到達したときに、有底筒状体Ｗの開口端面よりも約０．５ｍｍ〜１．０ｍｍ程度底部側（ワーク保持部３０側）に位置するようにネックイン金型１０に配設されている。すなわち、潤滑油塗布手段１３は、ネックイン金型１０が有底筒状体Ｗに対して前進端位置に到達したときに、この筒状体Ｗの開口部に潤滑油を塗布する構成とされている。   Here, the lubricating oil application means 13 has a surface (hereinafter referred to as a “lower surface”) facing the work holding portion 30, and the neck-in mold 10 (tool holding portion main body 41) with respect to the bottomed cylindrical body W. When reaching the forward end position, the neck-in mold 10 is arranged so as to be positioned about 0.5 mm to 1.0 mm on the bottom side (work holding part 30 side) from the opening end surface of the bottomed cylindrical body W. It is installed. That is, the lubricating oil application means 13 is configured to apply lubricating oil to the opening of the cylindrical body W when the neck-in mold 10 reaches the forward end position with respect to the bottomed cylindrical body W. ing.

以上のように構成された製造装置２０により、有底筒状体Ｗをボトル缶に成形する方法について説明する。
まず、有底筒状体Ｗは、図４に示すように、供給部３３により保持装置３２に供給されて保持装置３２に保持され、その後、ワーク保持部本体３１の間欠的回転によって、ツール保持部４０に備えられた潤滑油塗布用のツールに対向配置される。そして、ツール保持部本体４１の進退移動によって、有底筒状体Ｗの開口部に潤滑油が塗布される。 A method of forming the bottomed cylindrical body W into a bottle can by the manufacturing apparatus 20 configured as described above will be described.
First, as shown in FIG. 4, the bottomed cylindrical body W is supplied to the holding device 32 by the supply unit 33 and is held by the holding device 32, and then the tool is held by the intermittent rotation of the work holding unit main body 31. It is disposed opposite to the lubricant application tool provided in the section 40. Then, the lubricant is applied to the opening of the bottomed tubular body W by the forward and backward movement of the tool holder main body 41.

その後、前記間欠的回転により、この有底筒状体Ｗは、前記潤滑油塗布手段１３を有さないネックイン金型１０に対向配置され、次いで、ツール保持部本体４１の前進移動により、ネックイン金型１０の中子部１１が有底筒状体Ｗの開口部からその内側に挿入されるとともに、外子部１２の内側に有底筒状体Ｗの開口部が挿入される。さらに前進移動を続けることにより、外子部１２の押圧部１２ａが有底筒状体Ｗの開口部の外周面に摺接しながらこれを径方向内方に向けて押圧し、かつ中子部１１の外周面が前記開口部の内周面を支持して、該開口部に縮径加工が施される。その後、同様に前進移動を続けることで、有底筒状体Ｗの開口部に、その底部側に向けて順次縮径加工が施されるとともに、該加工が施された部分は、その内外周面が中子部１１の外周面および外子部１２の内周面に案内された状態で、これら１１、１２の隙間を金型１０の後端側（ツール保持部４０側）に向かって相対的に移動する。   After that, due to the intermittent rotation, the bottomed cylindrical body W is disposed opposite to the neck-in mold 10 that does not have the lubricating oil application means 13, and then the tool holder main body 41 moves forward to move the neck The core 11 of the in-mold 10 is inserted into the inside of the bottomed cylindrical body W from the opening thereof, and the opening of the bottomed cylindrical body W is inserted into the inside of the outer core 12. Furthermore, by continuing the forward movement, the pressing portion 12a of the outer core portion 12 presses the outer circumferential surface of the bottomed cylindrical body W toward the radially inner side while slidingly contacting the outer peripheral surface of the bottomed cylindrical body W, and the core portion 11 The outer peripheral surface supports the inner peripheral surface of the opening, and the diameter of the opening is reduced. After that, by continuing the forward movement in the same manner, the diameter reduction processing is sequentially performed toward the bottom side of the opening of the bottomed cylindrical body W, and the processed portions are the inner and outer peripheries. With the surface guided to the outer peripheral surface of the core portion 11 and the inner peripheral surface of the outer core portion 12, the gap between these 11 and 12 is relatively directed toward the rear end side (tool holding portion 40 side) of the mold 10. Move on.

そして、ツール保持部本体４１が前進端位置に到達した後に、ツール保持部本体４１を後退移動させ、以降同様にして、有底筒状体Ｗは、前記中間地点に配設された潤滑油塗布手段１３を有するネックイン金型１０に対向配置するまで、この塗布手段１３を有さないネックイン金型１０により順次縮径加工が施される。なお、この過程において、前記潤滑油塗布用ツールにより前記開口部に塗布された潤滑油は、中子部１１および外子部１２により拭われることとなる。   Then, after the tool holder main body 41 reaches the forward end position, the tool holder main body 41 is moved backward, and thereafter, the bottomed tubular body W is applied with the lubricating oil disposed at the intermediate point. Until the neck-in mold 10 having the means 13 is opposed to the neck-in mold 10, the diameter reduction processing is sequentially performed by the neck-in mold 10 not having the coating means 13. In this process, the lubricant applied to the opening by the lubricant application tool is wiped by the core 11 and the outer core 12.

次いで、この有底筒状体Ｗは、潤滑油塗布手段１３を有する前記中間地点のネックイン金型１０に対向配置した際、該金型１０により、前述した縮径加工が施されるとともに、ツール保持部本体４１が前進端位置に到達したときに、該筒状体Ｗの開口端は潤滑油塗布手段１３の前記下面にめり込む。この際、潤滑油塗布手段１３に含浸されていた潤滑油が有底筒状体Ｗの開口部内外周面に塗布される。その後、ツール保持部本体４１を後退移動させて、ネックイン金型１０から有底筒状体Ｗの開口部を抜き出す。
そしてさらに、ワーク保持部本体３１を回転移動させる等することによって、前記開口部に潤滑油が塗布された有底筒状体Ｗは、前記潤滑油塗布手段１３を有さない次のネックイン金型１０により前記縮径加工が施され、以降同様の進退移動および回転移動を繰り返し、その都度ネックイン金型１０により縮径加工が施されるとともに、他の成形ツール４２により成形加工が施されることによってボトル缶１に成形され、このボトル缶１は、図４に示すように、取り出し手段３４により次工程に搬送される。 Next, when the bottomed cylindrical body W is disposed opposite the neck-in mold 10 at the intermediate point having the lubricating oil application means 13, the mold 10 is subjected to the aforementioned diameter reduction processing, When the tool holder main body 41 reaches the forward end position, the open end of the cylindrical body W is recessed into the lower surface of the lubricant applying means 13. At this time, the lubricating oil impregnated in the lubricating oil applying means 13 is applied to the inner peripheral surface of the opening of the bottomed cylindrical body W. Thereafter, the tool holder main body 41 is moved backward to extract the opening of the bottomed cylindrical body W from the neck-in mold 10.
Further, the bottomed tubular body W in which the lubricant is applied to the opening by rotating and moving the work holder main body 31 is the next neck-in gold that does not have the lubricant application means 13. The diameter reduction process is performed by the mold 10, and thereafter the same forward / backward movement and rotation movement are repeated, and each time the diameter reduction process is performed by the neck-in mold 10 and the molding process is performed by another molding tool 42. Thus, the bottle can 1 is formed, and the bottle can 1 is conveyed to the next step by the take-out means 34 as shown in FIG.

以上説明したように本実施形態によるボトル缶の製造装置およびボトル缶の製造方法によれば、中子部１１の外周面と外子部１２の内周面との間に、潤滑油塗布手段１３が備えられているので、ネックイン金型１０により前記縮径加工を施すときに、その次のネックイン金型１０による前記縮径加工において、前記開口部と中子部１１および外子部１２との良好な滑り性を確保するために、予め前記開口部に潤滑油を塗布することができる。したがって、それぞれのネックイン金型１０が互いに隣接するようにツール保持部４０に前記工程順に備えられた一連のネックイン金型１０において、前記工程順の中間地点に、前記潤滑油塗布用ツールをネックイン金型１０と独立して配設する必要がなく、ツール保持部４０内における前記縮径加工のための占有スペースを抑えることが可能になり、例えば新たな仕様のボトル缶１を形成する場合等に、容易に対応することができる。また、前記縮径加工および潤滑油の塗布の双方を同時に実施することが可能になり、ボトル缶１の高効率生産を実現することができる。さらに、成形ツール４２の数量を抑えられることから、装置１０のメンテナンス工数の低減を図ることができる。   As described above, according to the bottle can manufacturing apparatus and the bottle can manufacturing method according to the present embodiment, the lubricating oil applying means 13 is provided between the outer peripheral surface of the core portion 11 and the inner peripheral surface of the outer core portion 12. Therefore, when the diameter-reducing process is performed by the neck-in mold 10, the opening, the core part 11, and the outer part 12 are formed in the diameter-reducing process by the next neck-in mold 10. In order to ensure good slipperiness, lubricating oil can be applied to the opening in advance. Therefore, in the series of neck-in molds 10 provided in the process order in the tool holder 40 so that the respective neck-in molds 10 are adjacent to each other, the lubricant application tool is provided at an intermediate point in the process order. There is no need to dispose the neck-in mold 10 independently, and the occupied space for the diameter-reducing process in the tool holding unit 40 can be suppressed. For example, a bottle can 1 having a new specification is formed. It is possible to easily cope with cases. Moreover, it becomes possible to implement both the said diameter reduction process and application | coating of lubricating oil simultaneously, and can implement | achieve the highly efficient production of the bottle can 1. FIG. Furthermore, since the number of molding tools 42 can be reduced, the maintenance man-hours of the apparatus 10 can be reduced.

本実施形態では、前記潤滑油塗布手段１３により、ツール保持部４０が前進端位置に到達したときに、有底筒状体Ｗの開口部に潤滑油を塗布するので、潤滑油塗布手段１３を有するネックイン金型１０において、潤滑油が塗布された後の有底筒状体Ｗの開口部が、中子部１１の外周面および外子部１２の内周面に対向して移動する距離（以下、「対向移動距離」という）を最小限に抑えることが可能になり、前記塗布された潤滑油が中子部１１の外周面および外子部１２の内周面によって拭われることを抑制することが可能になる。したがって、前記潤滑油を前記開口部に確実に保持させて、この有底筒状体Ｗを次のネックイン金型１０に供することができる。
また、給油孔１２ｃが、外子部１２の周方向に互いに等間隔をあけて複数穿設されるとともに、全て同形同大とされているので、潤滑油塗布手段１３にその全周に亙って均一な量の潤滑油を含浸させることが可能になり、有底筒状体Ｗの開口部にその全周に亙ってむらなく潤滑油を塗布することができる。 In the present embodiment, when the tool holding unit 40 reaches the forward end position by the lubricating oil application unit 13, the lubricating oil is applied to the opening of the bottomed cylindrical body W. In the neck-in mold 10 having the distance, the opening of the bottomed cylindrical body W after the lubricant is applied moves to face the outer peripheral surface of the core portion 11 and the inner peripheral surface of the outer core portion 12. (Hereinafter referred to as “opposing movement distance”) can be minimized, and the applied lubricant is prevented from being wiped by the outer peripheral surface of the core portion 11 and the inner peripheral surface of the outer core portion 12. It becomes possible to do. Therefore, the bottomed cylindrical body W can be used for the next neck-in mold 10 while the lubricating oil is reliably held in the opening.
In addition, a plurality of oil supply holes 12c are formed at equal intervals in the circumferential direction of the outer core portion 12 and all have the same shape and size. Thus, a uniform amount of lubricating oil can be impregnated, and the lubricating oil can be uniformly applied to the opening of the bottomed cylindrical body W over the entire circumference.

なお、本発明の技術的範囲は前記実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。例えば、潤滑油塗布手段１３は、それぞれのネックイン金型１０が互いに隣接するように前記工程順にツール保持部４０に備えられた場合に、これらの金型１０のうち、最後に縮径加工を施すネックイン金型１０を除く他の金型１０の少なくとも一つに設けられた構成であれば、この潤滑油塗布手段１３を配設するネックイン金型１０の位置および個数は特に限られるものではない。   The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, when the tool holding unit 40 is provided in the order of the processes so that the neck-in molds 10 are adjacent to each other, the lubricant application unit 13 performs the diameter reduction process at the end of the molds 10. The position and number of the neck-in molds 10 on which the lubricating oil applying means 13 is disposed are particularly limited as long as the configuration is provided in at least one of the other molds 10 excluding the neck-in mold 10 to be applied. is not.

また、潤滑油が含浸された潤滑油塗布手段１３に、前記前進端位置に到達した有底筒状体Ｗの開口端を押付けることにより、該開口部に潤滑油を塗布する構成を示したが、これに限られるものではなく、例えば噴霧や滴下により塗布するようにしてもよい。この場合、ネックイン金型１０を有底筒状体Ｗに対して相対的に後退移動させ、前記開口部を該金型１０から抜き出すまでの間に、この開口部に潤滑油を塗布することも可能となって、当該金型１０における前記対向移動距離をさらに抑えることが可能になる。したがって、中子部１１および外子部１２により前記塗布された潤滑油が拭われることを確実に抑制することができる。   In addition, a configuration is shown in which the lubricating oil is applied to the opening by pressing the opening end of the bottomed cylindrical body W that has reached the forward end position against the lubricating oil application means 13 impregnated with the lubricating oil. However, it is not restricted to this, For example, you may make it apply | coat by spraying or dripping. In this case, the neck-in mold 10 is moved backward relative to the bottomed cylindrical body W, and the lubricant is applied to the opening until the opening is extracted from the mold 10. It becomes possible, and it becomes possible to further suppress the opposing movement distance in the mold 10. Therefore, it is possible to reliably suppress the applied lubricating oil from being wiped by the core portion 11 and the outer core portion 12.

さらに、前記実施形態では、缶体としてボトル缶を例に挙げて説明したが、これに限られるものではなく、例えば開口部に缶蓋が巻き締められてなるいわゆる缶を形成するための缶体を形成する場合にも適用可能であり、開口部にネックイン加工が複数回施されて形成される缶体であればその構成は特に限定されるものではない。   Furthermore, in the said embodiment, although the bottle can was mentioned as an example and demonstrated as a can body, it is not restricted to this, For example, the can body for forming what is called a can by which a can lid is wound around an opening part The structure is not particularly limited as long as it is a can body that is formed by necking in the opening a plurality of times.

成形ツールの数量を減らすことにより、新たな仕様の缶体を形成する場合等にその対応を容易にするとともに、生産効率の向上を図ることができ、かつメンテナンス工数も低減させることが可能になる。   By reducing the number of molding tools, it is possible to easily cope with the formation of cans with new specifications, improve production efficiency, and reduce maintenance man-hours. .

本発明の一実施形態として示したボトル缶の製造装置において、要部拡大断面側面図である。It is a principal part expanded sectional side view in the manufacturing apparatus of the bottle can shown as one Embodiment of this invention. 図１に示すボトル缶の製造装置のＸ１線―Ｘ１線矢視断面図である。FIG. 2 is a cross-sectional view of the bottle can manufacturing apparatus shown in FIG. 本発明の一実施形態として示したボトル缶の製造装置を示す概略側面図である。It is a schematic side view which shows the manufacturing apparatus of the bottle can shown as one Embodiment of this invention. 図３に示すボトル缶の製造装置のＸ２−Ｘ２線矢視断面図である。It is X2-X2 arrow directional cross-sectional view of the bottle can manufacturing apparatus shown in FIG.

符号の説明Explanation of symbols

１ ボトル缶（缶体）
１０ ネックイン金型
１３ 潤滑材塗布手段
２０ 製造装置
３２ 保持装置
４０ ツール保持部
４２ 成形ツール
Ｗ 有底筒状体
1 Bottle can (can body)
DESCRIPTION OF SYMBOLS 10 Neck-in metal mold | die 13 Lubricant application means 20 Manufacturing apparatus 32 Holding apparatus 40 Tool holding part 42 Molding tool W Bottomed cylindrical body

Claims (3)

ＤＩ加工により形成された有底筒状体を保持する保持装置と、該有底筒状体に成形加工を施す複数の成形ツールを有するツール保持部とを備え、該ツール保持部に工程順に設けられた前記各成形ツールによって順次前記有底筒状体に対して加工を施すことにより缶体に成形する構成とされた缶体の製造装置であって、
前記ツール保持部には、前記成形ツールとして、前記有底筒状体の開口部に縮径加工を施すネックイン金型が複数備えられ、これらの金型の少なくとも一部は、それぞれのネックイン金型が互いに隣接するように前記ツール保持部に前記工程順に備えられ、
該ネックイン金型は、前記有底筒状体の開口部からその内側に挿入されて配置される中子部と、円筒状に形成されてその内側に前記有底筒状体の開口部が挿入される外子部とを備えるとともに、前記有底筒状体に対して相対的に前進移動する過程において、前記外子部の内周面が前記有底筒状体の開口部の外周面に摺接しながらこれを径方向内方に向けて押圧し、かつ前記中子部の外周面が前記開口部の内周面を支持することによって前記縮径加工を施す構成とされ、
前記一部のネックイン金型のうち、最後に前記縮径加工を施す金型を除く他の金型の少なくとも一つにおける、前記中子部の外周面と前記外子部の内周面との間には、前記有底筒状体の開口部に潤滑油を塗布する潤滑油塗布手段が配設されていることを特徴とする缶体の製造装置。 A holding device for holding a bottomed cylindrical body formed by DI processing and a tool holding portion having a plurality of forming tools for forming the bottomed cylindrical body, and provided in the tool holding portion in order of steps A can body manufacturing apparatus configured to be formed into a can body by sequentially processing the bottomed tubular body by the formed molding tools,
The tool holding portion is provided with a plurality of neck-in molds for reducing the diameter of the opening of the bottomed cylindrical body as the molding tool, and at least a part of these molds is provided with each neck-in mold. The tool holder is provided in the order of the processes so that the molds are adjacent to each other,
The neck-in mold has a core portion that is inserted and arranged inside the opening of the bottomed cylindrical body, and is formed in a cylindrical shape with the opening of the bottomed cylindrical body inside. And an outer peripheral surface of the opening of the bottomed cylindrical body in the process of moving forward relative to the bottomed cylindrical body. It is configured to apply the diameter reduction process by pressing it radially inward while being in sliding contact with the outer peripheral surface of the core portion and supporting the inner peripheral surface of the opening portion,
Out of the partial neck-in molds, the outer peripheral surface of the core part and the inner peripheral surface of the outer core part in at least one of the other molds excluding the mold subjected to the diameter reduction process at the end. Between the two, there is provided a lubricating oil applying means for applying lubricating oil to the opening of the bottomed cylindrical body. 請求項１記載の缶体の製造装置において、
前記潤滑油塗布手段は、前記有底筒状体が相対的に前進端位置に到達したとき、または前記ネックイン金型を前記有底筒状体に対して相対的に後退移動させ、前記有底筒状体の開口部を該金型から抜き出すまでの間に、該開口部に潤滑油を塗布する構成とされたことを特徴とする缶体の製造装置。 In the can manufacturing apparatus according to claim 1,
The lubricating oil application means moves the necked-in mold backward relative to the bottomed cylindrical body when the bottomed cylindrical body reaches a relatively advanced end position, or relative to the bottomed cylindrical body. An apparatus for producing a can body, characterized in that a lubricating oil is applied to the opening until the opening of the bottom cylindrical body is extracted from the mold. 請求項１または２に記載の缶体の製造装置を用い、前記有底筒状体を缶体に成形することを特徴とする缶体の製造方法。

A method for producing a can body, wherein the bottomed tubular body is formed into a can body using the can body producing apparatus according to claim 1.

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Publication number Priority date Publication date Assignee Title
JP2018523580A (en) * 2015-07-30 2018-08-23 ベルヴァック・プロダクション・マシーナリー・インコーポレイテッドＢｅｌｖａｃ Ｐｒｏｄｕｃｔｉｏｎ Ｍａｃｈｉｎｅｒｙ，Ｉｎｃ． Lubrication-free sealing device for neck forming machine
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