JPH06304683A - Production of lug type vessel cap - Google Patents

Production of lug type vessel cap

Info

Publication number
JPH06304683A
JPH06304683A JP5094639A JP9463993A JPH06304683A JP H06304683 A JPH06304683 A JP H06304683A JP 5094639 A JP5094639 A JP 5094639A JP 9463993 A JP9463993 A JP 9463993A JP H06304683 A JPH06304683 A JP H06304683A
Authority
JP
Japan
Prior art keywords
cup
molded product
shaped
liner
shaped molded
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
Application number
JP5094639A
Other languages
Japanese (ja)
Other versions
JP3333972B2 (en
Inventor
Kashiwa Murayama
柏 村山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Closures Co Ltd
Original Assignee
Japan Crown Cork Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Crown Cork Co Ltd filed Critical Japan Crown Cork Co Ltd
Priority to JP09463993A priority Critical patent/JP3333972B2/en
Publication of JPH06304683A publication Critical patent/JPH06304683A/en
Application granted granted Critical
Publication of JP3333972B2 publication Critical patent/JP3333972B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Closures For Containers (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To provide the producing method of a lug type vessel cap which can form an annular shaped liner on the outer circumferential part of the internal surface of the roof wall by the die-forming. CONSTITUTION:A circular shaped sheet is formed into a cup shaped forming article 2 having a circular shape roof and a cylindrical skirt 6 hung down from the periphery of the roof by pressing, and before or after hemming the top end of the skirt of the cup shaped forming article 2, an annular liner raw material 160 is supplied on the internal surface of the roof wall of the cup shaped forming article 2. After a liner 180 is formed by pressing the annular liner raw material 160, plural lugs 12 are formed by locally projecting the tip end of the skirt inward in a radial direction at intervals in the circumferential direction.

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、ラグ式容器蓋、更に詳
しくは、容器蓋の天面壁内面に環形状のライナーを形成
したラグ式容器蓋の製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rug type container lid, and more particularly to a method for manufacturing a rug type container lid in which a ring-shaped liner is formed on the inner surface of the top surface of the container lid.

【0002】[0002]

【従来の技術】容器頸部の外周面にねじ状またはリング
状の突条が形成されている容器を密封するための容器蓋
として、従来からラグ式容器蓋が実用に供されている。
このラグ式容器蓋は、特公昭38ー4295号公報に開
示されているように、円形天面壁と該天面壁の周縁から
垂下した円筒状スカートとを有し、該スカートの先端が
内巻きカール形状に形成せしめられ、該スカートの先端
には周方向に間隔を置いて局部的に半径方向内方に突出
する複数個のラグが形成されている。そして、容器開口
端を充分確実に密封するために、容器蓋の天面壁内面に
ライナーが形成されている。
2. Description of the Related Art A lug type container lid has been conventionally put into practical use as a container lid for sealing a container in which a screw-shaped or ring-shaped ridge is formed on the outer peripheral surface of a container neck.
As disclosed in Japanese Patent Publication No. 38-4295, this lug type container lid has a circular top surface wall and a cylindrical skirt hanging down from the peripheral edge of the top surface wall, and the tip of the skirt is curled inward. The skirt has a plurality of lugs, which are formed in a shape and locally protrude inward in the radial direction at intervals in the circumferential direction at the tip of the skirt. A liner is formed on the inner surface of the top wall of the container lid in order to seal the container opening end with sufficient certainty.

【0003】このようなラグ式容器蓋の従来用いられて
いる製造方法を図8(A)乃至図8(E)に基づいて説
明する。先ず、第1の工程では、ブリキ板またはクロム
処理鋼の如き適宜の金属製円形薄板にプレス加工を施し
て、図8(A)に示すように円形天面壁4と該天面壁4
の周縁から垂下した円筒状スカート6とを有するコップ
形状成形品2を成形する。次に、第2の工程において、
コップ形状成形品2のスカート6の先端にヘミング加工
を施し、図8(B)に示すように半径方向内方に屈曲す
る屈曲部8を形成する。スカート6の先端に屈曲部8が
形成されたコップ形状成形品2は、第3の工程におい
て、スカート6の先端に更にカーリング加工を施して、
図8(C)に示すように内巻きカール部10を形成する
とともに、周方向に間隔を置いた複数個所にラグ加工を
施して局部的に半径方向内方に突出する複数個のラグ1
2を形成する。次に、第4の工程において、図8(D)
に示すようにコップ形状成形品2を回転させつつノズル
14より塩化ビニルコンパウンド・ゾルを流し込む、所
謂スピンライニングにより天面壁4の内面外周部にライ
ナー素材16を供給する。最後に第5の工程において、
天面壁4の内面に供給されたライナー素材16を焼付・
乾燥機によって発泡または乾燥することにより、図8
(E)に示すように天面壁4の内面にライナー18を備
えたラグ式容器蓋が製作される。
A conventional manufacturing method of such a rug type container lid will be described with reference to FIGS. 8 (A) to 8 (E). First, in the first step, an appropriate metal circular thin plate such as a tin plate or a chrome-treated steel is subjected to press working to form a circular top surface wall 4 and the top surface wall 4 as shown in FIG. 8 (A).
And a cup-shaped molded product 2 having a cylindrical skirt 6 hanging down from the peripheral edge of. Next, in the second step,
A hemming process is applied to the tip of the skirt 6 of the cup-shaped molded product 2 to form a bent portion 8 that bends inward in the radial direction as shown in FIG. 8 (B). The cup-shaped molded product 2 in which the bent portion 8 is formed at the tip of the skirt 6 is further curled at the tip of the skirt 6 in the third step,
As shown in FIG. 8C, an inner curl portion 10 is formed, and a plurality of lugs 1 locally protruding inward in the radial direction are formed by lug processing at a plurality of circumferentially spaced locations.
Form 2. Next, in a fourth step, FIG.
The liner material 16 is supplied to the inner peripheral portion of the top wall 4 by so-called spin lining, in which the vinyl chloride compound sol is poured from the nozzle 14 while rotating the cup-shaped molded product 2 as shown in FIG. Finally, in the fifth step,
Baking the liner material 16 supplied on the inner surface of the top wall 4
By foaming or drying with a dryer, FIG.
As shown in (E), a rug type container lid having a liner 18 on the inner surface of the top wall 4 is manufactured.

【0004】しかるに、前記ライナー素材としての塩化
ビニルは、加熱せしめると塩素ガスを発生し、大気公害
として大きな社会問題となっている。そこで、ライナー
素材としてポリエチレン、ポリプロピレン等の有害ガス
を発生しない合成樹脂材料を用いることが考えられる
が、スピンライニングを行うためには、ライナー素材は
かなりの流動性を有する必要があり、ポリエチレン、ポ
リプロピレン等ではの使用可能範囲において加熱しても
要求される流動性は得られない。流動性を得るために、
ポリエチレン、ポリプロピレンを例えば、300℃程度
に加熱すると、組成分解を起こして所期の性質が失われ
るてしまう。従って、ポリエチレン、ポリプロピレン等
をライナー素材として使用する場合は、型押成形を用い
なければならない。しかしらがら、ラグ式容器蓋は、前
記したようにスカート6先端に周方向に間隔を置いて局
部的に半径方向内方に突出する複数個のラグが形成され
ているため、該ラグがライナー素材供給具や型押工具と
干渉し、その成形が極めて困難となる。
However, the vinyl chloride used as the liner material generates chlorine gas when heated, which poses a serious social problem as atmospheric pollution. Therefore, it is conceivable to use a synthetic resin material that does not generate harmful gas such as polyethylene or polypropylene as the liner material. However, in order to perform spin lining, the liner material needs to have considerable fluidity. In such a case, the required fluidity cannot be obtained even if heated in the usable range. To get liquidity,
When polyethylene or polypropylene is heated to, for example, about 300 ° C., composition decomposition occurs and the desired properties are lost. Therefore, when polyethylene, polypropylene or the like is used as the liner material, embossing must be used. However, in the lug type container lid, as described above, a plurality of lugs that locally protrude inward in the radial direction are formed at the tip of the skirt 6 at intervals in the circumferential direction. It interferes with the material supply tool and the embossing tool, making its forming extremely difficult.

【0005】[0005]

【発明が解決しようとする課題】本発明は上記事実に鑑
みてなされたものであり、その主たる技術的課題は、天
面壁の内面外周部に型押成形によって環形状のライナー
を形成することを可能にしたラグ式容器蓋の製造方法を
提供することにある。本発明の他の技術的課題は、以下
に述べる本発明の実施例の詳細な説明によって明らかに
されるであろう。
SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and its main technical problem is to form a ring-shaped liner on the inner peripheral portion of the top wall by embossing. An object of the present invention is to provide a method of manufacturing a rug type container lid that is made possible. Other technical problems of the present invention will become apparent from the detailed description of the embodiments of the present invention given below.

【0006】[0006]

【課題を解決するための手段】上記技術的課題を達成す
るために、本発明によれば、円形薄板をプレス加工によ
り円形天面と該天面の周縁から垂下した円筒状スカート
とを有するコップ形状成形品に成形する第1の工程と、
該コップ形状成形品の該天面壁内面に環形状のライナー
素材を供給する第2の工程と、該カップ状成形品の該天
面壁内面に供給された該環形状のライナー素材を型押成
形してライナーを形成する第3の工程と、該天面壁内面
に環形状のライナーが形成された該コップ状成形品の該
スカートの先端をヘミング加工する第4の工程と、該ヘ
ミング加工された該コップ状成形品の該スカートの先端
を周方向に間隔を置いて局部的に半径方向内方に突出せ
しめて複数個のラグを形成する第5の工程と、からなる
ラグ式容器蓋の製造方法が提供される。
In order to achieve the above technical object, according to the present invention, a cup having a circular top surface by pressing a circular thin plate and a cylindrical skirt hanging down from the peripheral edge of the top surface. A first step of molding into a shaped molded article,
A second step of supplying a ring-shaped liner material to the inner surface of the top wall of the cup-shaped molded product, and stamping and molding the ring-shaped liner material supplied to the inner surface of the top wall of the cup-shaped molded product. To form a liner, a fourth step of hemming the tip of the skirt of the cup-shaped molded product in which the ring-shaped liner is formed on the inner surface of the ceiling surface, and the hemming A method of manufacturing a lug-type container lid, which comprises a fifth step of locally projecting the tip of the skirt of the cup-shaped molded article inward in the radial direction at intervals in the circumferential direction to form a plurality of lugs. Will be provided.

【0007】また、本発明によれば、円形薄板をプレス
加工により円形天面と該天面の周縁から垂下した円筒状
スカートとを有するコップ形状成形品に成形する第1の
工程と、該コップ状成形品の該スカートの先端をヘミン
グ加工する第2の工程と、該コップ形状成形品の該天面
壁内面に環形状のライナー素材を供給する第3の工程
と、該カップ状成形品の該天面壁内面に供給された該環
形状のライナー素材を型押成形してライナーを形成する
第4の工程と、該カップ状成形品の該天面壁内面に該環
形状のライナーが形成されたコップ状成形品の該スカー
トの先端を周方向に間隔を置いて局部的に半径方向内方
に突出せしめて複数個のラグを形成する第5の工程と、
からなるラグ式容器蓋の製造方法が提供される。
According to the present invention, the first step of forming a circular thin plate into a cup-shaped molded product having a circular top surface and a cylindrical skirt hanging down from the peripheral edge of the top surface by press working, and the cup. The second step of hemming the tip of the skirt of the cup-shaped molded article, the third step of supplying a ring-shaped liner material to the inner surface of the top wall of the cup-shaped molded article, and the third step of the cup-shaped molded article. A fourth step of forming a liner by embossing the ring-shaped liner material supplied to the inner surface of the top wall, and a cup having the ring-shaped liner formed on the inner surface of the top wall of the cup-shaped molded article A fifth step of forming a plurality of lugs by locally protruding radially inwardly the tips of the skirt of the molded article at intervals in the circumferential direction,
A method of manufacturing a rug type container lid is provided.

【0008】[0008]

【作用】円形薄板をプレス加工により円形天面壁と該天
面壁の周縁から垂下した円筒状スカートとを有するコッ
プ形状成形品に成形し、該コップ形状成形品のスカート
の先端にヘミング加工を施す前或いは後に、該コップ形
状成形品の天面壁内面に環形状のライナー素材を供給
し、該環形状のライナー素材を型押成形してライナーを
形成した後、スカートの先端を周方向に間隔を置いて局
部的に半径方向内方に突出せしめて複数個のラグを形成
する。
Operation: A circular thin plate is pressed into a cup-shaped molded product having a circular top wall and a cylindrical skirt hanging down from the peripheral edge of the top wall, and before the hemming process is applied to the tip of the skirt of the cup-shaped molded product. Alternatively, after supplying a ring-shaped liner material to the inner surface of the top surface wall of the cup-shaped molded product and forming the liner by embossing the ring-shaped liner material, the skirt tips are circumferentially spaced. Locally projecting radially inward to form a plurality of lugs.

【0009】[0009]

【実施例】以下、添付図面を参照して、本発明によるラ
グ式容器蓋の製造方法の一実施例について詳細に説明す
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for manufacturing a rug type container lid according to the present invention will be described in detail below with reference to the accompanying drawings.

【0010】図1は本発明によるラグ式容器蓋の製造方
法の一実施例を示す工程図、図2はプレス加工機の要部
断面図、図3はライナー素材供給装置の要部断面図、図
4はライナー素材の型押成形機の要部断面図、図5はヘ
ミング加工機の要部断面図、図6はカーリングおよびラ
グ加工機の要部断面図である。本発明によるラグ式容器
蓋の製造方法は、先ず、第1の工程において、前記従来
の製造方法と同様に、ブリキ板またはクロム処理鋼の如
き適宜の金属製円形薄板にプレス加工を施して、図1
(A)に示すように円形天面壁4と該天面壁4の周縁か
ら垂下した円筒状スカート6とを有するコップ形状成形
品2を成形する。このプレス加工は、例えば図2に示す
従来公知のプレス加工機によって行うことができる。即
ち、下型部材322、324および326とからなる下
型320と、上型部材332、334、336および3
38とからなる上型330とによって構成されたプレス
機30の前記下型320上に金属製円形薄板を載置し、
前記上型330を油圧装置等によって図2に示すように
下降せしめることにより、図1(A)に示すように円形
天面壁4と該天面壁4の周縁から垂下した円筒状スカー
ト6とを有するコップ形状成形品2を成形する。
FIG. 1 is a process diagram showing an embodiment of a method for manufacturing a rug type container lid according to the present invention, FIG. 2 is a sectional view of a main part of a press machine, and FIG. 3 is a sectional view of a main part of a liner material supply device. FIG. 4 is a cross-sectional view of a main part of a liner material embossing molding machine, FIG. 5 is a cross-sectional view of a main part of a hemming processing machine, and FIG. 6 is a cross-sectional view of a main part of a curling and lug processing machine. The manufacturing method of the rug type container lid according to the present invention, first, in the first step, similar to the conventional manufacturing method, by pressing an appropriate metal circular thin plate such as a tin plate or chrome treated steel, Figure 1
As shown in (A), a cup-shaped molded product 2 having a circular top surface wall 4 and a cylindrical skirt 6 hanging down from the peripheral edge of the top surface wall 4 is formed. This press working can be performed by a conventionally known press working machine shown in FIG. 2, for example. That is, the lower mold 320 including the lower mold members 322, 324, and 326, and the upper mold members 332, 334, 336, and 3
A metal circular thin plate is placed on the lower mold 320 of the press machine 30 composed of an upper mold 330 composed of
By lowering the upper die 330 as shown in FIG. 2 by a hydraulic device or the like, the upper die 330 has a circular top wall 4 and a cylindrical skirt 6 hanging from the peripheral edge of the top wall 4 as shown in FIG. The cup-shaped molded product 2 is molded.

【0011】次に、プレス加工されたコップ形状成形品
2は、第2の工程であるライナー素材供給工程に移行さ
れ、コップ形状成形品2の天面壁4の内面外周部にライ
ナー素材供給装置によって図1(B)に示すようにポリ
エチレン、ポリプロピレン等の合成樹脂を加熱溶融した
環形状のライナー素材160が供給される。このライナ
ー素材160の供給は、例えば図3に示すライナー素材
供給装置によって行うことができる。即ち、コップ形状
成形品2を倒立状態で支持する支持台42と、該支持台
42の上方に配設され図示しない押出機に接続する導入
路を備えた柱状部材442と、ケーシング449と一体
に形成された筒状部材444と、前記柱状部材442の
下端に取り付けられた下部材446と、前記導入路に連
絡する円筒状通路447および該円筒状通路447と連
絡し外周面に開口する円環状排出路448とからなる柱
状内側部材44と、該柱状内側部材44の筒状部材44
4と前記ケーシング449との間に図において上下方向
に摺動可能に嵌合された筒状外側部材450と、前記ケ
ーシング449の下端に装着された案内部材460とを
有するライナー素材供給装置40によって、コップ形状
成形品2の天面壁4の内面外周部にライナー素材160
が供給される。該ライナー素材160の供給作動につい
て詳述する。コップ形状成形品2は支持台42上に倒立
状態で支持され、支持台42が上昇せしめられることに
より、前記案内部材460と嵌合して位置決めされる。
一方、前記筒状外側部材450が図示しない昇降装置に
よって円環状排出路448より上方に移動せしめられる
と、それまで閉じられていた円環状排出路448が開放
され、該環状排出路448の排出口からライナー素材1
60が流出する。ライナー素材が所定量流出した時点で
前記筒状外側部材450が下降せしめられ、これにより
円環状排出路448の排出口から流出したライナー素材
126が円環形状に切断されて、コップ形状成形品2の
天面壁4の内面外周部に円環形状のライナー素材160
が供給される。
Next, the press-formed cup-shaped molded product 2 is transferred to a liner material supplying step which is a second step, and the cup-shaped molded product 2 is provided on the inner peripheral surface of the top wall 4 of the cup-shaped molded product 2 by a liner material supplying device. As shown in FIG. 1B, a ring-shaped liner material 160 obtained by heating and melting a synthetic resin such as polyethylene or polypropylene is supplied. The liner material 160 can be supplied by, for example, the liner material supply device shown in FIG. That is, a support pedestal 42 for supporting the cup-shaped molded product 2 in an inverted state, a columnar member 442 provided above the support pedestal 42 and provided with an introduction path for connecting to an extruder not shown, and a casing 449 are integrally formed. A formed cylindrical member 444, a lower member 446 attached to the lower end of the columnar member 442, a cylindrical passage 447 communicating with the introduction passage, and an annular shape communicating with the cylindrical passage 447 and opening to the outer peripheral surface. A columnar inner member 44 including a discharge passage 448, and a tubular member 44 of the columnar inner member 44.
4 and the casing 449, a liner material supply device 40 having a tubular outer member 450 fitted slidably in the vertical direction in the figure, and a guide member 460 attached to the lower end of the casing 449. The liner material 160 is provided on the inner peripheral portion of the top wall 4 of the cup-shaped molded product 2.
Is supplied. The operation of supplying the liner material 160 will be described in detail. The cup-shaped molded product 2 is supported on the support base 42 in an inverted state, and when the support base 42 is raised, it is fitted and positioned with the guide member 460.
On the other hand, when the tubular outer member 450 is moved upward from the annular discharge passage 448 by a lifting device (not shown), the circular discharge passage 448 which has been closed until then is opened, and the discharge port of the annular discharge passage 448 is opened. From liner material 1
60 flows out. When the liner material flows out by a predetermined amount, the tubular outer member 450 is lowered, whereby the liner material 126 that has flowed out from the discharge port of the ring-shaped discharge path 448 is cut into a ring shape, and the cup-shaped molded product 2 An annular liner material 160 is provided on the inner peripheral portion of the top surface wall 4 of
Is supplied.

【0012】前記第2の工程においてコップ形状成形品
2の天面壁4の内面外周部に環形状のライナー素材16
0が供給されたら、コップ形状成形品2は、第3の工程
である型押成形工程に送られ、型押成形機により前記環
形状のライナー素材160に所要形状の型押成形が施さ
れて、図1(C)に示すように環形状のライナー180
が形成される。このライナー素材の型押成形は、例えば
図4に示す型押成形機によって行うことができる。即
ち、ライナー素材160が供給されたコップ形状成形品
2を倒立状態で支持する支持台52と、該支持台52の
上方に配設された柱状の型押部材542と該柱状型押部
材542に摺動可能に嵌合された筒状の型押部材544
とからなる型押工具54と、該筒状型押部材544に摺
動可能に嵌合された案内部材56とを有する型押成形機
50によって、コップ形状成形品2の天面壁4の内面外
周部に供給されたライナー素材160を所要の形状に型
押成形して、環形状のライナー180を成形する。該ラ
イナー180の成形作動について更に詳述に説明する。
ライナー素材160が供給されたコップ形状成形品2
は、支持台52上に倒立状態で支持され、支持台52が
上昇せしめられることにより、前記案内部材56と嵌合
して位置決めされる。一方、前記型押工具54が図示し
ない昇降装置によって下降せしめられるが、前記柱状型
押部材542が先にコップ形状成形品2の天面壁4の内
面に当接し、次いで前記筒状型押部材544が下降して
ライナー素材160を所要の形状に型押成形して、環形
状のライナー180を成形する。
In the second step, a ring-shaped liner material 16 is provided on the inner peripheral portion of the top wall 4 of the cup-shaped molded product 2.
When 0 is supplied, the cup-shaped molded product 2 is sent to the embossing molding step which is the third step, and the ring-shaped liner material 160 is embossed in the required shape by the embossing molding machine. , A ring-shaped liner 180 as shown in FIG.
Is formed. The embossing of this liner material can be performed by, for example, the embossing machine shown in FIG. That is, the support base 52 for supporting the cup-shaped molded product 2 supplied with the liner material 160 in an inverted state, the columnar embossing member 542 disposed above the support base 52, and the columnar embossing member 542. Cylindrical embossing member 544 slidably fitted
By the embossing molding machine 50 having the embossing tool 54 composed of and the guide member 56 slidably fitted to the cylindrical embossing member 544, the inner surface outer circumference of the top wall 4 of the cup-shaped molded product 2 is The liner material 160 supplied to the section is embossed into a desired shape to form a ring-shaped liner 180. The molding operation of the liner 180 will be described in more detail.
Cup-shaped molded product 2 supplied with liner material 160
Is supported on the support base 52 in an inverted state, and the support base 52 is raised to be fitted and positioned with the guide member 56. On the other hand, although the embossing tool 54 is lowered by an elevating device (not shown), the columnar embossing member 542 first comes into contact with the inner surface of the top surface wall 4 of the cup-shaped molded product 2, and then the cylindrical embossing member 544. Moves down to emboss the liner material 160 into a desired shape to form a ring-shaped liner 180.

【0013】このようにしてコップ形状成形品2の天面
壁4の内面外周部に環形状のライナー180が形成され
たならば、第4の工程であるヘミング加工工程に送られ
る。ヘミング加工工程では、コップ形状成形品2のスカ
ート6の先端にヘミング加工が施され、図1(D)に示
すように半径方向内方に屈曲する屈曲部8が形成され
る。このヘミング加工は、例えば図5に示すヘミング加
工機によって行うことができる。即ち、天面壁4の内面
外周部に環形状のライナー180を形成したコップ形状
成形品2を倒立状態で支持する支持台62と、該支持台
62の上方に配設されコップ形状成形品2の外周縁に沿
って転動する成形ローラ64とを有する従来公知のヘミ
ング加工機60によって、前記成形ローラ64をコップ
形状成形品2のスカート6の先端に押し当てつつ外周縁
に沿って転動することにより、半径方向内方に屈曲する
屈曲部8を形成する。
When the ring-shaped liner 180 is formed on the inner peripheral portion of the top wall 4 of the cup-shaped molded product 2 in this manner, it is sent to the hemming process which is the fourth process. In the hemming step, the tip of the skirt 6 of the cup-shaped molded product 2 is hemmed to form a bent portion 8 that bends radially inward as shown in FIG. 1 (D). This hemming process can be performed by a hemming machine shown in FIG. 5, for example. That is, a support base 62 for supporting the cup-shaped molded product 2 in which the ring-shaped liner 180 is formed on the outer peripheral portion of the inner surface of the top wall 4 in an inverted state, and the cup-shaped molded product 2 disposed above the support base 62. A conventionally known hemming machine 60 having a forming roller 64 rolling along the outer peripheral edge rolls along the outer peripheral edge while pressing the forming roller 64 against the tip of the skirt 6 of the cup-shaped molded product 2. Thus, the bent portion 8 that bends inward in the radial direction is formed.

【0014】次に、スカート6の先端はヘミング加工さ
れたコップ形状成形品2は最終工程であるカーリングお
よびラグ成形加工工程に送られ、スカート6の先端に更
にカーリング加工が施され、図1(E)に示すように内
巻きカール部10が形成されるとともに、周方向に間隔
を置いて複数個所にラグ加工が施されて局部的に半径方
向内方に突出する複数個のラグ12が形成されて、ラグ
式容器蓋が製作される。カーリングおよびラグ成形は、
例えば図6に示すカーリングおよびラグ加工機によって
行うことができる。即ち、ヘミング加工が施されたコッ
プ形状成形品2を倒立状態で支持する支持台72と、該
支持台72の上方に配設されたカーリング成形型74お
よびラグ成形型部材762、764、766とからなる
ラグ成形型76とを有する公知のカーリングおよびラグ
加工機70によって、コップ形状成形品2のスカート6
の先端に内巻きカール部10を形成するとともに、周方
向に間隔を置いて複数個所に局部的に半径方向内方に突
出する複数個のラグ12を形成する。
Next, the cup-shaped molded product 2 in which the tip of the skirt 6 has been hemmed is sent to the curling and lug forming step, which is the final step, and the tip of the skirt 6 is further subjected to curling processing. As shown in E), the inner curl portion 10 is formed, and a plurality of lugs 12 that locally protrude inward in the radial direction are formed by performing lug processing at a plurality of locations at intervals in the circumferential direction. Then, the rug type container lid is manufactured. Curling and lug molding
For example, the curling and lug processing machine shown in FIG. 6 can be used. That is, a support base 72 for supporting the hemmed cup-shaped molded product 2 in an inverted state, and a curling mold 74 and lug molding mold members 762, 764, 766 arranged above the support base 72. The skirt 6 of the cup-shaped molded product 2 is obtained by a known curling and lug processing machine 70 having a lug molding die 76 made of
An inner winding curl portion 10 is formed at the tip end of the lug 12, and a plurality of lugs 12 that locally protrude inward in the radial direction are formed at a plurality of positions at intervals in the circumferential direction.

【0015】以上のように、本実施例によれば、金属製
円形薄板にプレス加工を施し円形天面壁4と該天面壁4
の周縁から垂下した円筒状スカート6とを有するコップ
形状成形品2が成形された状態、即ち、スカート6の先
端にヘミング加工やカーリングおよびラグ成形加工を施
す前に、ライナー素材供給工程およびライナー素材型押
成形工程によって天面壁4の内面外周部に環形状のライ
ナー180を成形するようにしたので、ライナー成形時
にライナー素材供給具や型押工具と干渉するラグがない
ため、ラグ式容器蓋においてもポリエチレン、ポリプロ
ピレン等の合成樹脂材による環形状のライナーを容易に
形成することが可能である。
As described above, according to the present embodiment, the circular top plate 4 and the circular top wall 4 are formed by pressing the metal circular thin plate.
Of the cup-shaped molded product 2 having the cylindrical skirt 6 hanging from the periphery of the skirt 6, that is, before the hemming process, curling and lug molding process is performed on the tip of the skirt 6, the liner material supplying step and the liner material are performed. Since the ring-shaped liner 180 is formed on the outer peripheral portion of the inner surface of the top wall 4 by the embossing molding process, there is no lug that interferes with the liner material supply tool or the embossing tool during the liner molding. Also, it is possible to easily form a ring-shaped liner made of a synthetic resin material such as polyethylene or polypropylene.

【0016】図7は本発明によるラグ式容器蓋の製造方
法の他の実施例を示す工程図である。本実施例は、前記
図1に示す実施例の製造工程における、ヘミング加工工
程をプレス加工の次、即ち、ライナー成形工程であるラ
イナー素材供給工程およびライナー型押成形工程の前に
行うようにしたものである。即ち、本実施例は、第1の
工程で金属製円形薄板にプレス加工を施して、図7
(A)に示すように円形天面壁4と該天面壁4の周縁か
ら垂下した円筒状スカート6とを有するコップ形状成形
品2を成形し、第2の工程でコップ形状成形品2のスカ
ート6の先端にヘミング加工を行い、図7(B)に示す
ように半径方向内方に屈曲する屈曲部8を形成する。次
に、第3の工程でコップ形状成形品2の天面壁4の内面
外周部にライナー素材供給装置によって図7(C)に示
すようにポリエチレン、ポリプロピレン等の合成樹脂を
加熱溶融した環形状のライナー素材160が供給され、
第4の工程において型押成形機により前記環形状のライ
ナー素材160に所要形状の型押成形を施し、図7
(D)に示すようにコップ形状成形品2の天面壁4の内
面に環形状のライナー180を形成する。そして、最終
の第5工程で前記実施例と同様にスカート6の先端にカ
ーリング加工を施して、図7(E)に示すように内巻き
カール部10を形成するとともに、周方向に間隔を置い
て複数個所にラグ加工を施し局部的に半径方向内方に突
出する複数個のラグ12を形成して、ラグ式容器蓋を製
作する。なお、前記各工程における加工方法について
は、前記図2乃至図6に示す各加工機を使用することが
できる。
FIG. 7 is a process drawing showing another embodiment of the method for manufacturing a rug type container lid according to the present invention. In this embodiment, the hemming process in the manufacturing process of the embodiment shown in FIG. 1 is performed after the press working, that is, before the liner material supplying process and the liner embossing process, which are liner forming processes. It is a thing. That is, in this embodiment, the metal circular thin plate is pressed in the first step, and
As shown in (A), a cup-shaped molded product 2 having a circular top surface wall 4 and a cylindrical skirt 6 hanging down from the peripheral edge of the top surface wall 4 is molded, and in the second step, the skirt 6 of the cup-shaped molded product 2 is molded. A hemming process is performed on the tip of the to form a bent portion 8 that bends radially inward as shown in FIG. 7 (B). Next, in a third step, as shown in FIG. 7 (C), a synthetic resin such as polyethylene or polypropylene is heated and melted on the inner peripheral portion of the top wall 4 of the cup-shaped molded product 2 so as to form a ring shape. Liner material 160 is supplied,
In the fourth step, the ring-shaped liner material 160 is embossed into a desired shape by an embossing machine,
As shown in (D), a ring-shaped liner 180 is formed on the inner surface of the top wall 4 of the cup-shaped molded product 2. Then, in the final fifth step, the tip of the skirt 6 is curled in the same manner as in the above-described embodiment to form the inner curl portion 10 as shown in FIG. A plurality of lugs 12 are locally formed inward in the radial direction to form a rug type container lid. As for the processing method in each step, each processing machine shown in FIGS. 2 to 6 can be used.

【0017】図7に示す実施例においても、ライナー成
形工程であるライナー素材供給工程およびライナー型押
成形工程を、ラグ成形加工工程の前に実施するので、前
記図1に示した実施例と同様に、ライナー成形時にライ
ナー素材供給具や型押工具と干渉するラグがないため、
ラグ式容器蓋においてもポリエチレン、ポリプロピレン
等の合成樹脂材による環形状のライナーを容易に形成す
ることが可能である。
Also in the embodiment shown in FIG. 7, the liner material supplying step and the liner embossing step, which are the liner forming steps, are carried out before the lug forming step, so that it is the same as the embodiment shown in FIG. Since there is no lug that interferes with the liner material supply tool or embossing tool during liner molding,
Even in a rug type container lid, it is possible to easily form a ring-shaped liner made of a synthetic resin material such as polyethylene or polypropylene.

【0018】以上、本発明を図示の実施例に基づいて説
明したが、本発明は実施例のみに限定されるものではな
く、本発明の技術思想の範囲で種々の変形は可能であ
り、これらを本発明の技術的範囲から排除するものでは
ない。例えば、前記実施例においては、カーリング加工
とラグ加工を同時に行う例を示したが、これらを各々別
工程にとし、カーリング加工を施した後にラグ加工を行
ってもよい。即ち、本発明は、ラグ加工を行う前に型押
成形によりライナーを成形をすることが特徴であり、こ
れにより、ラグ式容器蓋においてもポリエチレン、ポリ
プロピレン等の合成樹脂材による環形状のライナーを容
易に形成することが可能となるのである。
Although the present invention has been described based on the illustrated embodiments, the present invention is not limited to the embodiments, and various modifications can be made within the scope of the technical idea of the present invention. Is not excluded from the technical scope of the present invention. For example, although the curling process and the lug process are performed at the same time in the above-mentioned embodiment, these may be performed in different steps, and the rug process may be performed after the curling process. That is, the present invention is characterized in that the liner is formed by embossing before performing the lug processing, whereby even in a rug type container lid, a ring-shaped liner made of a synthetic resin material such as polyethylene or polypropylene is used. It can be easily formed.

【0019】[0019]

【発明の効果】以上のように本発明によるラグ式容器蓋
の製造方法は、金属製円形薄板をプレス加工により成形
した円形天面壁と該天面壁の周縁から垂下した円筒状ス
カートとを有するコップ形状成形品の該スカートの先端
に、半径方向内方に突出する複数個のラグを成形加工す
る前に、天面壁の内面外周部に環形状のライナーを型押
成形によって成形するようにしたので、ライナー成形時
にライナー素材供給具や型押工具と干渉するラグがない
ため、ラグ式容器蓋においてもポリエチレン、ポリプロ
ピレン等の合成樹脂材による環形状のライナーを容易に
形成することが可能となる。
As described above, the method of manufacturing a rug type container lid according to the present invention has a cup having a circular top wall formed by pressing a circular metal thin plate and a cylindrical skirt hanging down from the peripheral edge of the top wall. Before forming a plurality of lugs protruding inward in the radial direction at the tip of the skirt of the shape-formed product, a ring-shaped liner is formed by embossing on the outer peripheral portion of the inner surface of the top wall. Since there is no lug that interferes with the liner material supply tool or the embossing tool during liner molding, it is possible to easily form a ring-shaped liner made of a synthetic resin material such as polyethylene or polypropylene even in a rug type container lid.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明によるラグ式容器蓋の製造方法の一実施
例を示す工程図。
FIG. 1 is a process drawing showing an embodiment of a method for manufacturing a rug type container lid according to the present invention.

【図2】プレス加工機の要部断面図。FIG. 2 is a sectional view of a main part of a press machine.

【図3】ライナー素材供給装置の要部断面図。FIG. 3 is a sectional view of a main part of a liner material supply device.

【図4】ライナー素材の押型成形機の要部断面図。FIG. 4 is a cross-sectional view of a main part of a liner material press molding machine.

【図5】ヘミング加工機の要部断面図。FIG. 5 is a cross-sectional view of a main part of a hemming machine.

【図6】カーリングおよびラグ加工機の要部断面。FIG. 6 is a cross-sectional view of a main part of a curling and lug processing machine.

【図7】本発明によるラグ式容器蓋の製造方法の他の実
施例を示す工程図。
FIG. 7 is a process drawing showing another embodiment of the method for manufacturing a rug type container lid according to the present invention.

【図8】従来用いられているラグ式容器蓋の製造方法を
示す工程図。
FIG. 8 is a process drawing showing a method of manufacturing a conventionally used rug type container lid.

【符号の説明】[Explanation of symbols]

2:コップ形状成形品 4:円形天面壁 6:円筒状スカート 8:屈曲部 10:カール部 12:ラグ 160:ライナー素材 180:ライナー 2: Cup-shaped molded product 4: Circular top surface wall 6: Cylindrical skirt 8: Bent portion 10: Curled portion 12: Lug 160: Liner material 180: Liner

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 円形薄板をプレス加工により円形天面と
該天面の周縁から垂下した円筒状スカートとを有するコ
ップ形状成形品に成形する第1の工程と、 該コップ形状成形品の該天面壁内面に環形状のライナー
素材を供給する第2の工程と、 該カップ状成形品の該天面壁内面に供給された該環形状
のライナー素材を型押成形してライナーを形成する第3
の工程と、 該天面壁内面に環形状のライナーが形成された該コップ
状成形品の該スカートの先端をヘミング加工する第4の
工程と、 該ヘミング加工された該コップ状成形品の該スカートの
先端を周方向に間隔を置いて局部的に半径方向内方に突
出せしめて複数個のラグを形成する第5の工程と、 からなるラグ式容器蓋の製造方法。
1. A first step of forming a circular thin plate into a cup-shaped molded product having a circular top surface and a cylindrical skirt hanging down from a peripheral edge of the top surface by press working, and the top of the cup-shaped molded product. A second step of supplying a ring-shaped liner material to the inner surface of the face wall, and a third step of forming the liner by embossing the ring-shaped liner material supplied to the inner surface of the top wall of the cup-shaped molded product
And a fourth step of hemming the tip of the skirt of the cup-shaped molded product in which a ring-shaped liner is formed on the inner surface of the top wall, and the skirt of the hemmed cup-shaped molded product. A fifth step of forming a plurality of lugs by locally projecting the distal ends of the tips inward in the radial direction at intervals in the circumferential direction, and a method for manufacturing a lug-type container lid, comprising:
【請求項2】 円形薄板をプレス加工により円形天面と
該天面の周縁から垂下した円筒状スカートとを有するコ
ップ形状成形品に成形する第1の工程と、 該コップ状成形品の該スカートの先端をヘミング加工す
る第2の工程と、 該コップ形状成形品の該天面壁内面に環形状のライナー
素材を供給する第3の工程と、 該カップ状成形品の該天面壁内面に供給された該環形状
のライナー素材を型押成形してライナーを形成する第4
の工程と、 該カップ状成形品の該天面壁内面に該環形状のライナー
が形成されたコップ状成形品の該スカートの先端を周方
向に間隔を置いて局部的に半径方向内方に突出せしめて
複数個のラグを形成する第5の工程と、 からなるラグ式容器蓋の製造方法。
2. A first step of forming a circular thin plate into a cup-shaped molded product having a circular top surface and a cylindrical skirt hanging down from a peripheral edge of the top surface by press working, and the skirt of the cup-shaped molded product. A second step of hemming the tip of the cup, a third step of supplying a ring-shaped liner material to the inner surface of the top wall of the cup-shaped molded product, and a third step of supplying the inner surface of the top wall of the cup-shaped molded product. Fourth, a liner is formed by embossing the ring-shaped liner material.
And the tip of the skirt of the cup-shaped molded product, in which the ring-shaped liner is formed on the inner surface of the top wall of the cup-shaped molded product, locally protrudes radially inward at intervals in the circumferential direction. A fifth step of forming at least a plurality of lugs, and a method of manufacturing a rug type container lid, comprising:
JP09463993A 1993-04-21 1993-04-21 Manufacturing method of rug type container lid Expired - Fee Related JP3333972B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09463993A JP3333972B2 (en) 1993-04-21 1993-04-21 Manufacturing method of rug type container lid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09463993A JP3333972B2 (en) 1993-04-21 1993-04-21 Manufacturing method of rug type container lid

Publications (2)

Publication Number Publication Date
JPH06304683A true JPH06304683A (en) 1994-11-01
JP3333972B2 JP3333972B2 (en) 2002-10-15

Family

ID=14115846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09463993A Expired - Fee Related JP3333972B2 (en) 1993-04-21 1993-04-21 Manufacturing method of rug type container lid

Country Status (1)

Country Link
JP (1) JP3333972B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100405263B1 (en) * 2001-03-21 2003-11-12 윤연홍 Lug cap and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100405263B1 (en) * 2001-03-21 2003-11-12 윤연홍 Lug cap and method thereof

Also Published As

Publication number Publication date
JP3333972B2 (en) 2002-10-15

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