JPH06255666A - Method and device for forming vertical slit in synthetic resin container cap - Google Patents

Method and device for forming vertical slit in synthetic resin container cap

Info

Publication number
JPH06255666A
JPH06255666A JP5042613A JP4261393A JPH06255666A JP H06255666 A JPH06255666 A JP H06255666A JP 5042613 A JP5042613 A JP 5042613A JP 4261393 A JP4261393 A JP 4261393A JP H06255666 A JPH06255666 A JP H06255666A
Authority
JP
Japan
Prior art keywords
container lid
cutter
tamper
vertical slit
container
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
JP5042613A
Other languages
Japanese (ja)
Other versions
JP3208613B2 (en
Inventor
Hidehiko Omi
英彦 近江
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 JP04261393A priority Critical patent/JP3208613B2/en
Publication of JPH06255666A publication Critical patent/JPH06255666A/en
Application granted granted Critical
Publication of JP3208613B2 publication Critical patent/JP3208613B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

PURPOSE:To securely remove a tamper-evident ring-shaped part, by providing a tamper-evident ring-shaped part at the lower end of skirt of a cover body through a joint and further, providing a weakened line formed at the joint and vertical slits from the lower end of the ring-shaped part to the weakened line. CONSTITUTION:A container cup 2 is provided with a cup body composed of a top wall 4 and a skirt 6 and a tamper-evident ring-shaped part 10 formed at the lower end of the skirt 6 through the joint 8. A weakened line composed of a plurality of slits 18 and bridges 20 is formed at the joint 8 and vertical slits 24 reaching thereto are made. When turning the container cup 2 to the opening direction, most of the slits 24 and the bridges 20 are broken, and the cup is opened in such a state that a part of the slits and the bridges are left unbroken at the skirt 6. Accordingly, the tamper-evident ring-shaped part 10 is completely separated at the weakened line on opening the cup and the cup is not left in the state fitted to the container neck. The vertical slits 24 can be formed by an axially transferring cutter after erecting the container cup 2 reversely.

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、合成樹脂製容器蓋にお
けるスカート部の下端に弱化ラインを介して一体に形成
されたタンパーエビデント環状部に、その下端から該弱
化ラインに達する縦スリットを成形する方法及び装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tamper-evidence annular portion integrally formed at the lower end of a skirt portion of a synthetic resin container lid via a weakening line, and a vertical slit reaching from the lower end to the weakening line. The present invention relates to a molding method and apparatus.

【０００２】[0002]

【従来の技術】飲料用ガラス瓶或いは合成樹脂製瓶の如
き容器のための容器蓋として、所謂タンパーエビデント
（不正明示）機能を備えた合成樹脂製容器蓋が広く実用
に供されている。かかる容器蓋は、天面壁と該天面壁か
ら垂下し内周面に容器頸部に形成された雄ねじと係合す
る雌ねじを備えたスカート部とからなる蓋本体と、該ス
カート部の下端に接続部を介して一体に形成され内周面
に複数の係止片を備えたタンパーエビデント環状部とか
らなり、該接続部に周方向に形成された弱化ラインと、
該タンパーエビデント環状部に形成された縦スリットと
を備えている。この縦スリットは、例えば特開平２ー２
３３１３号公報に開示された成形方法によって成形され
ている。即ち、該公報に開示された成形装置は、回転支
持体に設けられた複数の容器蓋載置部に倒立状態で載置
された容器蓋に挿入された内歯切断具と、該回転支持体
の外側に複数の容器蓋載置部に沿って配置された水平方
向切断刃と垂直方向切断刃を備えた静止外側切断具とを
具備し、前記内歯切断具を静止外側切断具側に押圧しつ
つ回動することによって、前記弱化ラインを構成する水
平方向スリットと縦スリットとを成形するようにしたも
のである。2. Description of the Related Art As a container lid for a container such as a glass bottle for drinks or a bottle made of synthetic resin, a synthetic resin container lid having a so-called tamper-evidence function is widely put into practical use. Such a container lid is connected to a lower end of the skirt portion, which is a lid main body including a top wall and a skirt portion having an internal thread hanging down from the top wall and engaging with an external thread formed on the neck of the container. A tamper-evidence annular portion having a plurality of locking pieces formed on the inner peripheral surface thereof integrally formed via the portion, and a weakening line formed in the connection portion in the circumferential direction,
And a vertical slit formed in the tamper-evidence annular portion. This vertical slit is, for example, disclosed in JP-A-2-2.
It is molded by the molding method disclosed in Japanese Patent No. 3313. That is, the molding apparatus disclosed in this publication includes an internal tooth cutting tool inserted into a container lid placed in an inverted state on a plurality of container lid placement portions provided on the rotary support, and the rotary support. A stationary outer cutting tool provided with a horizontal cutting blade and a vertical cutting blade arranged along a plurality of container lid mounting parts on the outside of the container, and pressing the internal tooth cutting tool to the stationary outer cutting tool side. By rotating while rotating, the horizontal slits and the vertical slits forming the weakening line are formed.

【０００３】而して、このような成形方法は、上記のよ
うに容器蓋に挿入された内歯切断具を静止外側切断具側
に押圧しつつ回動することにより切断作用を成すもので
あるから、前記縦スリットはタンパーエビデント環状部
の係止片を形成していない部分に設けなければならな
い。従って、容器頸部に装着された容器蓋の開栓時に、
前記縦スリットを開かせる力が十分でないと、タンパー
エビデント環状部の下端まで完全に切断できない場合が
生じる。このようにタンパーエビデント環状部の下端ま
で完全に切断できない場合には、開栓時に前記弱化ライ
ンでタンパーエビデント環状部が完全に切り離される
と、該タンパーエビデント環状部が容器頸部に係合した
状態で残される。このため、消費者に不快感を与えると
ともに、容器のリサイクル時に容器頸部に係合した状態
で残されているタンパーエビデント環状部を取り除かな
ければならず、その取り除き作業が極めて面倒である。Thus, such a molding method performs a cutting action by rotating the internal tooth cutting tool inserted into the container lid as described above while pressing it toward the stationary outer cutting tool. Therefore, the vertical slit must be provided in a portion of the tamper-evident annular portion where the locking piece is not formed. Therefore, when opening the container lid attached to the container neck,
If the force for opening the vertical slits is not sufficient, the lower end of the tamper-evident annular portion may not be completely cut. If the tamper-evident annular part cannot be completely cut to the lower end of the tamper-evident annular part as described above, when the tamper-evident annular part is completely cut off by the weakening line at the time of opening, the tamper-evident annular part is engaged with the container neck. It is left in a combined state. For this reason, it is uncomfortable for the consumer, and the tamper-evidence annular portion left in the state of being engaged with the neck of the container must be removed when the container is recycled, and the removing work is extremely troublesome.

【０００４】[0004]

【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、タ
ンパーエビデント環状部の内周面に係止片を備えた容器
蓋において、開栓時に、タンパーエビデント環状部を容
器頸部に係合した状態で残すことなく、確実に除去する
ことができるようにするために、タンパーエビデント環
状部の下端から弱化ラインに達する縦スリットを容易に
成形することができる成形方法及び装置を提供すること
である。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 provide a container lid having a locking piece on the inner peripheral surface of the tamper-evident annular portion. A vertical slit that reaches the weakening line from the lower end of the tamper-evidence annulus in order to ensure that the tamper-evidence annulus is removed without leaving the tamper-evidence annulus engaged with the container neck when opening. To provide a molding method and a device capable of easily molding. Other technical problems of the present invention will become apparent from the detailed description of the embodiments of the present invention given below.

【０００５】[0005]

【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、天面壁と該天面壁から垂下
し内周面に容器頸部に係合する雌ねじを備えたスカート
部とからなる蓋本体と、該スカート部の下端に接続部を
介して一体に形成され内周面に係止片を備えたタンパー
エビデント環状部とからなり、該接続部に周方向に形成
された弱化ラインと、該タンパーエビデント環状部の下
端から該弱化ラインに達する縦スリットとを備えた合成
樹脂製容器蓋における縦スリットを成形する方法におい
て、該容器蓋を容器載置部に倒立した状態で載置する工
程と、該載置された容器蓋を該容器載置部に保持する工
程と、該保持された容器蓋に対してその軸方向にカッタ
を移動させ、該タンパーエビデント環状部の下端から該
弱化ラインに達する縦スリットを成形する工程と、を含
むことを特徴とする合成樹脂製容器蓋における縦スリッ
ト成形方法が提供される。In order to achieve the above technical object, according to the present invention, a skirt provided with a top wall and a female screw hanging from the top wall and engaging with an inner peripheral surface of a container neck. A tamper-evidence annular portion integrally formed on the lower end of the skirt through a connecting portion and provided with a locking piece on the inner peripheral surface, and is formed in the connecting portion in the circumferential direction. In the method of forming a vertical slit in a synthetic resin container lid having a weakened line and a vertical slit reaching the weakened line from the lower end of the tamper-evidence annular portion, the container lid is inverted on the container mounting portion. The tamper evidence by moving the cutter in the axial direction with respect to the held container lid, and the step of placing the placed container lid in the container placing portion. Reach the weakening line from the lower end of the annulus Longitudinal slits forming methods in synthetic resin container closure, which comprises a step of forming the longitudinal slit, is provided.

【０００６】また、本発明によれば、天壁面と該天面壁
から垂下し内周面に容器口部に係合する雌ねじを備えた
スカート部とからなる蓋本体と、該スカート部の下端に
接続部を介して一体に形成され内周面に周方向に傾斜す
る複数の係止片を備えたタンパーエビデント環状部とか
らなり、該接続部に周方向に形成された弱化ラインと、
該タンパーエビデント環状部の下端から該弱化ラインに
達する縦スリットとを備えた合成樹脂製容器蓋における
縦スリットを成形する方法において、該容器蓋を容器載
置部に倒立した状態で載置する工程と、該載置された容
器蓋を該容器載置部に保持する工程と、該保持された容
器蓋に対してその軸方向にカッタを移動させ、該タンパ
ーエビデント環状部の下端から該弱化ラインに達する縦
スリットを成形する工程と、を含み、該カッタの長さ
を、該係止片を切断分離しない値に設定した、ことを特
徴とする合成樹脂製容器蓋における縦スリット成形方法
が提供される。Further, according to the present invention, a lid main body comprising a ceiling wall surface and a skirt portion having a female screw hanging down from the ceiling surface wall and engaging with an inner peripheral surface of the container mouth portion, and a lower end of the skirt portion. A tamper-evidence annular portion provided with a plurality of locking pieces that are integrally formed through the connection portion and are inclined in the circumferential direction on the inner peripheral surface, and a weakening line formed in the connection portion in the circumferential direction,
In a method of forming a vertical slit in a synthetic resin container lid having a vertical slit reaching the weakening line from the lower end of the tamper-evidence annular portion, the container lid is placed on the container placing portion in an inverted state. A step, a step of holding the placed container lid in the container placing part, a cutter is moved in the axial direction with respect to the held container lid, and the cutter is moved from a lower end of the tamper-evidence annular portion. Forming a vertical slit reaching the weakening line, wherein the length of the cutter is set to a value that does not cut and separate the locking piece, and a method for forming a vertical slit in a synthetic resin container lid. Will be provided.

【０００７】更に、本発明によれば、天面壁と該天面壁
から垂下し内周面に容器口部に係合する雌ねじを備えた
スカート部とからなる蓋本体と、該スカート部の下端に
接続部を介して一体に形成され内周面に先端が周方向に
傾斜する複数の係止片を備え下端に内向きにカールした
周状のカール部を形成したタンパーエビデント環状部と
からなり、該接続部に周方向に形成された弱化ライン
と、該タンパーエビデント環状部の下端から該弱化ライ
ンに達する縦スリットとを備えた合成樹脂製容器蓋にお
ける縦スリットを成形する方法において、該容器蓋を容
器載置部に倒立した状態で載置する工程と、該載置され
た容器蓋を該容器載置部に保持する工程と、該保持され
た容器蓋に対してその軸方向にカッタを移動させ、該タ
ンパーエビデント環状部の下端から該弱化ラインに達す
る縦スリットを成形する工程と、を含み、該カッタの長
さを、該カール部は切断し該係止片を切断分離しない値
に設定した、ことを特徴とする合成樹脂製容器蓋におけ
る縦スリット成形方法が提供される。Further, according to the present invention, a lid body comprising a top wall and a skirt portion having a female screw hanging down from the top wall and engaging with the container mouth portion on the inner peripheral surface, and a lower end of the skirt portion. A tamper-evidence annular portion having a plurality of locking pieces integrally formed through a connecting portion and having a distal end inclined in the circumferential direction on the inner peripheral surface, and a curl inwardly curled around the lower end. A method for forming a vertical slit in a synthetic resin container lid having a weakening line formed in the circumferential direction in the connecting portion and a vertical slit reaching the weakening line from the lower end of the tamper-evident annular portion, A step of placing the container lid in an inverted state on the container placing part, a step of holding the placed container lid on the container placing part, and an axial direction with respect to the held container lid. Move the cutter and move the tamper evidence ring Forming a vertical slit from the lower end of the portion to reach the weakening line, and the length of the cutter is set to a value that does not cut the curl portion and does not separate the locking piece. A method for forming a vertical slit in a synthetic resin container lid is provided.

【０００８】また、本発明によれば、天壁面と該天面壁
から垂下し内周面に容器口部に係合する雌ねじを備えた
スカート部とからなる蓋本体と、該スカート部の下端に
接続部を介して一体に形成されタンパーエビデント環状
部とからなり、該接続部に周方向に形成された弱化ライ
ンと、該タンパーエビデント環状部の下端から該弱化ラ
インに達する縦スリットとを備えた合成樹脂製容器蓋に
おける縦スリットを成形する装置において、静止基台
と、該静止基台に回転自在に支持された回転支持体と、
該回転支持体に配設けられた容器蓋載置部と、該回転支
持体に周方向に間隔を置いて配設され、該容器蓋載置部
に載置された容器蓋を倒立状態で保持する容器蓋保持手
段と、該容器蓋載置部に倒立状態で保持された容器蓋の
タンパーエビデント環状部の下端に対向して配設され、
タンパーエビデント環状部に縦スリットを成形するカッ
タと、該カッタを該容器蓋載置部に倒立状態で保持され
た容器蓋の弱化ラインまで移動させるカッタ移動手段
と、該回転支持体に配設された該容器蓋載置部、該容器
蓋保持手段及びカッタを供給域、保持域、縦スリット成
形域及び排出域を順次に通るように該回転支持体を回転
せしめる駆動手段と、該供給域において該容器蓋載置部
に容器蓋を倒立状態で供給するための容器蓋供給手段
と、該排出域において該容器蓋載置部に載置された該容
器蓋を排出するための容器蓋排出手段と、を具備するこ
とを特徴とする合成樹脂製容器蓋における縦スリット成
形装置が提供される。Further, according to the present invention, a lid main body composed of a ceiling wall surface and a skirt portion having a female thread hanging down from the ceiling wall and engaging with the container mouth portion on the inner peripheral surface, and a lower end of the skirt portion. A tamper-evidence annular portion integrally formed via a connecting portion, and a weakening line formed in the circumferential direction in the connecting portion, and a vertical slit reaching the weakening line from the lower end of the tamper-evident annular portion. In a device for forming a vertical slit in a synthetic resin container lid provided, a stationary base, and a rotary support rotatably supported by the stationary base,
A container lid mounting portion provided on the rotation support body and a container lid placed on the rotation support body with a space in the circumferential direction, and holding the container lid placed on the container lid mounting portion in an inverted state. And a container lid holding means that is disposed to face the lower end of the tamper-evidence annular portion of the container lid that is held in an inverted state on the container lid mounting portion,
A cutter for forming a vertical slit in the tamper-evidence annular part, a cutter moving means for moving the cutter to a weakening line of the container lid held in an inverted state on the container lid placing part, and a cutter provided on the rotary support. Drive means for rotating the rotary support so that the container lid placing part, the container lid holding means and the cutter thus cut pass through the supply area, the holding area, the vertical slit forming area and the discharge area in sequence, and the supply area. And container lid supply means for supplying the container lid to the container lid mounting portion in an inverted state, and container lid discharging for discharging the container lid placed on the container lid mounting portion in the discharge area A vertical slit forming apparatus for a synthetic resin container lid is provided.

【０００９】[0009]

【作用】容器蓋は容器載置部に倒立状態で載置して保持
され、該容器蓋の下端に設けられたタンパーエビデント
環状部には、該タンパーエビデント環状部の下端周縁に
対向して配設され容器蓋の軸方向に移動するカッタによ
って、その下端から弱化ラインに達する縦スリットが形
成される。The container lid is placed and held in an inverted state on the container placing portion, and the tamper-evidence annular portion provided at the lower end of the container lid faces the lower end peripheral edge of the tamper-evident annular portion. A vertical slit extending from the lower end to the weakening line is formed by the cutter that is arranged and moves in the axial direction of the container lid.

【００１０】[0010]

【実施例】以下、本発明による合成樹脂製容器蓋におけ
る縦スリット成形方法及び装置について、添付図面を参
照して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vertical slit forming method and apparatus for a synthetic resin container lid according to the present invention will be described in detail below with reference to the accompanying drawings.

【００１１】図１は本発明による縦スリット成形方法に
よって縦スリットが形成された合成樹脂製容器蓋の一例
を示すもので、一部を破断して示す正面図、図２は図１
に示す合成樹脂製容器蓋の底面図、図３は図１に示す合
成樹脂製容器蓋を容器頸部に装着した状態を示すもの
で、一部を破断して示す正面図である。図１乃至図３に
示す合成樹脂製容器蓋２は、圧縮成形又は射出成形の如
き適宜の成形法によってその全体がポリプロピレン又は
ポリエチレンの如き適宜の合成樹脂材料から成形されて
いる。この容器蓋２は、円形状の天面壁４と該天面壁の
周縁から垂下する円筒状のスカート部６とからなる蓋本
体と、該スカート部の下端に接続部８を介して一体に形
成されたタンパーエビデント環状部１０とを具備してい
る。スカート部６は比較的肉厚であり、その上部に半径
方向内方に突出する環状突条１２が形成されており、そ
の内周面には図３に示すように容器頸部３０の外周面に
形成された雄ねじ条３２と螺合する雌ねじ条１４が形成
されている。スカート部６の外周面には、そこに指をか
けて容器蓋２を回転せしめる際の指の滑りを防ぐための
凹凸乃至ローレット成形１６が施されている。前記接続
部８は比較的薄厚に形成されており、該接続部８には周
方向に間隔を置いて周方向に延びる複数個のスリット１
８と、該スリット１８間に残留せしめられている橋絡部
２０とからなる弱化ラインが形成されている。この弱化
ラインは例えば前述した特開平２ー２３３１３号公報に
開示された成形方法によって形成される。前記タンパー
エビデント環状部１０も比較的薄厚に形成されており、
その内周面には半径方向内方に突出し且つ先端が上方に
傾斜して形成された複数個の係止片２２が設けられてい
る。この係止片２２は図３に示すように容器頸部３０に
容器蓋２が所要通りに装着されると、容器頸部３０の外
周面の前記雄ねじ条３２より下方に形成された環状係止
フランジ３４に係合せしめられる。なお、図示の実施例
においては、天面壁４の裏面に密封ライナー２６が施さ
れている。このライナー２６は倒立状態に保持されてい
る容器蓋２の天面壁４の裏面に適宜の合成樹脂でよい溶
融状態のライナー素材を供給し、次いで容器蓋２内に所
要形状の型押工具を挿入し、天面壁４の裏面と前記環状
突条１２とによって規定される領域に型押成形すること
によって、好都合に施すことができる。FIG. 1 shows an example of a synthetic resin container lid in which vertical slits are formed by the vertical slit forming method according to the present invention, and is a partially cutaway front view, and FIG. 2 is shown in FIG.
3 is a bottom view of the synthetic resin container lid shown in FIG. 3, and FIG. 3 is a front view showing a state in which the synthetic resin container lid shown in FIG. The synthetic resin container lid 2 shown in FIGS. 1 to 3 is wholly molded from a suitable synthetic resin material such as polypropylene or polyethylene by a suitable molding method such as compression molding or injection molding. This container lid 2 is integrally formed with a lid body composed of a circular top wall 4 and a cylindrical skirt portion 6 hanging down from the peripheral edge of the top wall, and a connecting portion 8 at the lower end of the skirt portion. And a tamper-evidence annulus 10. The skirt portion 6 is relatively thick, and an annular protrusion 12 that protrudes radially inward is formed on the upper portion of the skirt portion 6. The inner peripheral surface of the skirt portion 6 has an outer peripheral surface of the container neck portion 30 as shown in FIG. A female thread 14 is formed which is screwed with the male thread 32 formed on the. The outer peripheral surface of the skirt portion 6 is provided with unevenness or knurling 16 for preventing slippage of the finger when the finger is put on the skirt portion 6 to rotate the container lid 2. The connecting portion 8 is formed to be relatively thin, and the connecting portion 8 has a plurality of slits 1 circumferentially spaced from each other and extending in the circumferential direction.
8 and a bridging portion 20 left between the slits 18, a weakening line is formed. This weakening line is formed by the molding method disclosed in, for example, Japanese Patent Laid-Open No. 23233/1990 mentioned above. The tamper-evidence annular portion 10 is also formed to be relatively thin,
A plurality of locking pieces 22 are provided on the inner peripheral surface thereof, the locking pieces 22 protruding inward in the radial direction and having the tips inclined upward. As shown in FIG. 3, when the container lid 2 is mounted on the container neck 30 as required, the locking piece 22 is an annular locking formed below the male thread 32 on the outer peripheral surface of the container neck 30. It is engaged with the flange 34. In the illustrated embodiment, the sealing liner 26 is provided on the back surface of the top wall 4. This liner 26 supplies a liner material in a molten state, which may be an appropriate synthetic resin, to the back surface of the top wall 4 of the container lid 2 held in an inverted state, and then inserts an embossing tool of a required shape into the container lid 2. However, it can be conveniently applied by performing the embossing molding on the area defined by the back surface of the top wall 4 and the annular projection 12.

【００１２】このように構成された容器蓋２のタンパー
エビデント環状部１０には、その下端から前記複数個の
スリット１８と複数個の橋絡部２０とからなる弱化ライ
ンに達する縦スリット２４が形成されている。このよう
に構成された容器蓋２は、図３に示す容器頸部３０への
装着状態から開栓時に、容器蓋２を開栓方向に回動する
と前記係止片２２が容器頸部３０の外周面に形成された
環状係止フランジ３４の下面に係合して容器蓋２の開栓
方向への移動が規制され、更に容器蓋２を開栓方向に回
動すると先ず縦スリット２４がその下端から押し広げら
れ、次に前記弱化ラインの複数個の橋絡部２０が１個乃
至数個を残して破断される。即ち、容器蓋２の回動によ
り前記橋絡部２０が次第に破断されていくが、橋絡部２
０の殆どが破断されると、タンパーエビデント環状部１
０には縦スリット２４が形成されているため、環状体と
しての保持力が失われるため、複数個の橋絡部２０の１
個乃至数個は破断されないで残される。従って、タンパ
ーエビデント環状部１０は縦スリット２４及び複数個の
橋絡部２０の大部分が破断され、スカート部６に一部が
接続された状態で開栓される。このため、タンパーエビ
デント環状部１０が開栓時に前記弱化ラインで完全に切
り離されて、容器頸部に係合した状態で残されることは
なく、タンパーエビデント環状部１０が容器頸部に残さ
れることによる消費者に与える不快感を未然に防止でき
るとともに、容器のリサイクル時においても容器頸部に
残されるタンパーエビデント環状部の取り除き作業をす
る必要がない。なお、容器蓋２の開栓時に、稀に前記複
数個の橋絡部２０の全部が破断され、タンパーエビデン
ト環状部１０が容器頸部３０に残されたとしても、タン
パーエビデント環状部１０には最初から完全に破断され
ている縦スリット２４が形成されているので、手で容易
に取り除くことができる。The tamper-evidence annular portion 10 of the container lid 2 thus constructed has a vertical slit 24 extending from the lower end thereof to a weakening line composed of the plurality of slits 18 and the plurality of bridging portions 20. Has been formed. In the container lid 2 configured as described above, when the container lid 2 is rotated in the opening direction when the container lid 2 is opened from the state of being attached to the container neck portion 30 shown in FIG. The movement of the container lid 2 in the opening direction is restricted by engaging with the lower surface of the annular locking flange 34 formed on the outer peripheral surface, and when the container lid 2 is further rotated in the opening direction, the vertical slit 24 is first moved. It is spread from the lower end, and then the plurality of bridging portions 20 of the weakening line are broken, leaving one or a few. That is, the bridging portion 20 is gradually broken by the rotation of the container lid 2, but the bridging portion 2
When most of the 0 is broken, the tamper-evidence annulus 1
Since the vertical slit 24 is formed at 0, the retaining force as an annular body is lost, so that the number of bridges 20
Pieces or pieces are left unbroken. Therefore, the tamper-evidence annular portion 10 is opened in a state where most of the vertical slits 24 and the plurality of bridging portions 20 are broken and a part is connected to the skirt portion 6. For this reason, the tamper-evidence annular portion 10 is not completely separated by the weakening line at the time of opening the cap and is not left in a state of being engaged with the container neck portion, and the tamper-evident annular portion 10 is left in the container neck portion. It is possible to prevent discomfort caused to the consumer due to the removal of the tamper evidence, and it is not necessary to remove the tamper-evident annular portion left on the neck of the container even when the container is recycled. In addition, even if all of the plurality of bridging portions 20 are rarely broken when the container lid 2 is opened and the tamper-evident annular portion 10 is left in the container neck portion 30, the tamper-evident annular portion 10 Since the vertical slit 24 which is completely broken from the beginning is formed in the sheet, it can be easily removed by hand.

【００１３】図４は本発明による縦スリット成形方法に
よって縦スリットが形成された合成樹脂製容器蓋の他の
例を示すもので、一部を破断して示す正面図、図５は図
４に示す合成樹脂製容器蓋の底面図、図６は図４に示す
合成樹脂製容器蓋を容器頸部に装着した状態を示すもの
で、一部を破断して示す正面図、図７は容器蓋のタンパ
ーエビデント環状部に形成される係止片と縦スリットと
の関係を示す説明図である。本実施例に示す合成樹脂製
容器蓋は、上記図１乃至図３に示す容器蓋２とタンパー
エビデント環状部以外は同様の構成であり、従って、同
一部材には同一符号を付して、その説明は省略する。容
器蓋２におけるスカート部６の下端に接続部８を介して
一体に形成されたタンパーエビデント環状部１０は、そ
の内周面に先端が周方向に傾斜する複数個のフラップ状
の係止片２７を備えている。該係止片２７は図５に示す
ように、容器蓋２の締付回転方向（矢印Ａ）に対して、
その先端が矢印Ａと反対方向に傾斜しており、その傾斜
方向後面２７２は、軸芯Ｏと係止片２７付け根の傾斜方
向後端２７４とを結ぶ線に対する傾斜角θが略３０度に
形成されている。タンパーエビデント環状部１０の下端
には、内向きにカールした周状のカール部２８が形成さ
れている。該カール部２８は容器蓋２の圧縮成形又は射
出成形時には、図４において２点鎖線で示されるように
形成されており、例えば特開平４ー３１１４６１号公報
に開示された方法によってカール状に形成される。FIG. 4 shows another example of the synthetic resin container lid in which the vertical slits are formed by the vertical slit forming method according to the present invention. FIG. 6 is a bottom view of the synthetic resin container cover shown in FIG. 6, FIG. 6 shows a state in which the synthetic resin container cover shown in FIG. FIG. 7 is an explanatory view showing a relationship between a locking piece formed in the tamper-evidence annular portion and a vertical slit. The synthetic resin container lid shown in this embodiment has the same configuration except the container lid 2 and the tamper-evidence annular portion shown in FIGS. 1 to 3, and therefore, the same members are designated by the same reference numerals, The description is omitted. The tamper-evidence annular portion 10 formed integrally with the lower end of the skirt portion 6 of the container lid 2 via the connecting portion 8 has a plurality of flap-like locking pieces whose tip is inclined in the circumferential direction on the inner peripheral surface thereof. It is equipped with 27. As shown in FIG. 5, the locking piece 27 is provided with respect to the tightening rotation direction (arrow A) of the container lid 2.
The tip is inclined in the direction opposite to the arrow A, and the rear surface 272 in the inclined direction is formed with an inclination angle θ with respect to the line connecting the shaft core O and the rear end 274 in the inclined direction of the base of the locking piece 27 at about 30 degrees. Has been done. At the lower end of the tamper-evidence annular portion 10, a curl portion 28 having a curl shape that is curled inward is formed. The curl portion 28 is formed as indicated by the chain double-dashed line in FIG. 4 when the container lid 2 is compression-molded or injection-molded. For example, the curl portion 28 is curled by the method disclosed in Japanese Patent Application Laid-Open No. 4-311461. To be done.

【００１４】このようにタンパーエビデント環状部１０
の内周面に先端が周方向に傾斜する複数個のフラップ状
の係止片２７を備えたものにおいては、容器蓋２の容器
頸部３０への装着時には該係止片２７が大きな抵抗とは
ならず、開栓時には該係止片２７が大きな抵抗となっ
て、弱化ラインの橋絡部２０の破断を容易にする。ま
た、タンパーエビデント環状部１０の下端に周状のカー
ル部２８を備えたものにおいては、開栓時において係止
片２７を下側から押さえつけるように作用して、係止片
２７の伸び、変形等を防止し、開栓時における係止片２
７の抵抗力を更に増大して、弱化ラインの橋絡部２０の
破断を更に容易に且つ確実にする。本実施例の合成樹脂
製容器蓋も上記実施例と同様に、容器蓋２は、図６に示
す容器頸部３０への装着状態から開栓時に、容器蓋２を
開栓方向に回動すると前記係止片２７が容器頸部３０の
外周面に形成された環状係止フランジ３４の下面に係合
して容器蓋２の開栓方向への移動が規制され、更に容器
蓋２を開栓方向に回動すると先ず縦スリット２４がその
下端から押し広げられ、次に前記弱化ラインの複数個の
橋絡部２０が１個乃至数個を残して破断される。即ち、
容器蓋２の回動により前記橋絡部２０が次第に破断され
ていくが、橋絡部２０の殆どが破断されると、タンパー
エビデント環状部１０には縦スリット２４が形成されて
いるため、環状体としての保持力が失われるため、複数
個の橋絡部２０の１個乃至数個は破断されないで残され
る。従って、タンパーエビデント環状部１０は縦スリッ
ト２４及び複数個の橋絡部２０の大部分が破断され、ス
カート部６に一部が接続された状態で開栓される。この
ため、タンパーエビデント環状部１０が開栓時に前記弱
化ラインで完全に切り離されて、容器頸部に係合した状
態で残されることはなく、タンパーエビデント環状部１
０が容器頸部に残されることによる消費者に与える不快
感を未然に防止できるとともに、容器のリサイクル時に
おいても容器頸部に残されるタンパーエビデント環状部
の取り除き作業をする必要がない。なお、容器蓋２の開
栓時に、稀に前記複数個の橋絡部２０の全部が破断さ
れ、タンパーエビデント環状部１０が容器頸部３０に残
されたとしても、タンパーエビデント環状部１０には最
初から完全に破断されている縦スリット２４が形成され
ているので、手で容易に取り除くことができる。In this way, the tamper-evident annular portion 10
In which a plurality of flap-shaped locking pieces 27 whose tip is inclined in the circumferential direction are provided on the inner peripheral surface of the container, the locking pieces 27 have a large resistance when the container lid 2 is mounted on the container neck 30. When the stopper is opened, the locking piece 27 has a large resistance and facilitates the breakage of the bridging portion 20 of the weakening line. Further, in the case where the tamper-evidence annular portion 10 is provided with the circumferential curl portion 28 at the lower end, it acts so as to press the locking piece 27 from below at the time of opening the cap, and the locking piece 27 extends, Locking piece 2 that prevents deformation and prevents the opening
The resistance of 7 is further increased to make breaking the bridging portion 20 of the weakening line easier and more reliable. Similarly to the above-described embodiment, the synthetic-resin container lid according to the present embodiment has a structure in which the container lid 2 is rotated in the opening direction when the container lid 2 is opened and the container lid is opened. The locking piece 27 engages with the lower surface of an annular locking flange 34 formed on the outer peripheral surface of the container neck 30 to restrict movement of the container lid 2 in the opening direction, and further open the container lid 2. When rotated in the direction, the vertical slits 24 are first spread from the lower end thereof, and then the plurality of bridging portions 20 of the weakening line are broken, leaving one or a few. That is,
The bridging portion 20 is gradually broken by the rotation of the container lid 2, but when most of the bridging portion 20 is broken, since the vertical slit 24 is formed in the tamper-evidence annular portion 10, Since the holding force as the annular body is lost, one or several of the plurality of bridging portions 20 are left without being broken. Therefore, the tamper-evidence annular portion 10 is opened in a state where most of the vertical slits 24 and the plurality of bridging portions 20 are broken and a part is connected to the skirt portion 6. For this reason, the tamper-evidence annular portion 1 is not completely separated by the weakening line at the time of opening the cap, and is not left in a state of being engaged with the neck portion of the container.
It is possible to prevent the consumer from feeling uncomfortable when 0 is left in the neck of the container, and it is not necessary to remove the tamper-evident annular portion left in the neck of the container when the container is recycled. In addition, even if all of the plurality of bridging portions 20 are rarely broken when the container lid 2 is opened and the tamper-evident annular portion 10 is left in the container neck portion 30, the tamper-evident annular portion 10 Since the vertical slit 24 which is completely broken from the beginning is formed in the sheet, it can be easily removed by hand.

【００１５】図８は上記容器蓋２のタンパーエビデント
環状部１０に縦スリット２４を形成するための、本発明
に従って構成された装置の一実施例を示す一部を破断し
た平面図、図９は図８におけるＢ−Ｂ線断面図、図１０
は図９におけるＣ−Ｃ線断面図である。図８乃至図１０
に示す装置は、全体を符号４０で示す主部を有する。こ
の主部４０は所定位置に固定された静止基台４２を有
し、該静止基台４２には、実質状鉛直に延びる静止支持
軸４４が配設されており、該静止支持軸４４の下端が複
数本の締付ボルト４６（図９にはその内の１本のみを図
示している）によって静止基台４２に固定されている。
該静止支持軸４４を包囲して略円筒状の回転支持体４８
が配設されており、該回転支持体４８は、その下端部が
軸受部材５０により、その上端部が軸受部材５２によっ
て前記静止基台４２及び静止支持軸４４に回転自在に支
持されている。該回転支持体４８の下端部には入力歯車
５４が設けられており、該入力歯車５４は適宜の駆動連
結手段（図示せず）を介して電動モータの如き回転駆動
源５６に駆動連結されている。かくして、回転支持体４
８は、駆動源５６の駆動力によって図８に矢印５８で示
す方向（図９において上方から見て反時計方向）に所定
速度で回転駆動せしめられる。回転支持体４８には、前
記入力歯車５４より上方に環状の容器蓋載置部４９が設
けられており、また、該容器蓋載置部４９の上方に環状
部材５１が固定されている。該環状部材５１の外周面に
は、図８に明示されているように周方向に所定間隔を置
いて略半円形状の複数個（図示の場合は９個）の切欠５
１２が形成されている。前記回転支持体４８の上部に
は、上下方向に間隔を置いて上部環状支持板６０及び下
部環状支持板６２が固定されている。これら上部環状支
持板６０及び下部環状支持板６２には、前記環状部材５
１に形成された複数個の切欠５１２に各々対応する位置
に周方向に所定間隔を置いて複数個（図示の場合は９
個）の貫通穴６０２及び６２２が各々形成されている。
該上部環状支持板６０及び下部環状支持板６２の各々対
応する位置に形成された複数個の貫通穴６０２及び６２
２には、双方を貫通して延びる複数本の軸体６４が配設
され、該貫通穴６０２及び６２２内に各々装着された軸
受スリーブ６６及び６８によって上下方向に摺動自在に
支持されている。FIG. 8 is a partially cutaway plan view showing an embodiment of an apparatus configured according to the present invention for forming a vertical slit 24 in the tamper-evidence annular portion 10 of the container lid 2, FIG. Is a sectional view taken along line BB in FIG.
FIG. 10 is a sectional view taken along line CC in FIG. 9. 8 to 10
The apparatus shown in FIG. 1 has a main part indicated by reference numeral 40. The main portion 40 has a stationary base 42 fixed at a predetermined position, and a stationary support shaft 44 extending substantially vertically is disposed on the stationary base 42, and a lower end of the stationary support shaft 44 is provided. Are fixed to the stationary base 42 by a plurality of tightening bolts 46 (only one of which is shown in FIG. 9).
A substantially cylindrical rotary support 48 that surrounds the stationary support shaft 44.
The rotary support 48 is rotatably supported at its lower end by a bearing member 50 and at its upper end by a bearing member 52 on the stationary base 42 and stationary support shaft 44. An input gear 54 is provided at the lower end of the rotary support 48, and the input gear 54 is drivingly connected to a rotary drive source 56 such as an electric motor through an appropriate drive connecting means (not shown). There is. Thus, the rotary support 4
8 is rotationally driven at a predetermined speed in a direction indicated by an arrow 58 in FIG. 8 (counterclockwise when viewed from above in FIG. 9) by the driving force of the driving source 56. The rotary support 48 is provided with an annular container lid mounting portion 49 above the input gear 54, and an annular member 51 is fixed above the container lid mounting portion 49. On the outer peripheral surface of the annular member 51, as shown in FIG. 8, a plurality of substantially semicircular notches 5 (9 in the case of illustration) at predetermined intervals in the circumferential direction.
12 are formed. An upper annular support plate 60 and a lower annular support plate 62 are fixed to the upper portion of the rotary support 48 at intervals in the vertical direction. The upper annular support plate 60 and the lower annular support plate 62 include the annular member 5
The plurality of cutouts 512 formed in 1 are spaced apart from each other at predetermined positions in the circumferential direction (in the case of the drawing, 9
Through holes 602 and 622, respectively.
A plurality of through holes 602 and 62 formed at corresponding positions of the upper annular support plate 60 and the lower annular support plate 62, respectively.
2, a plurality of shaft bodies 64 extending through both are disposed, and are supported slidably in the vertical direction by bearing sleeves 66 and 68 mounted in the through holes 602 and 622, respectively. .

【００１６】前記複数本の軸体６４は、該軸体６４を上
下方向に移動させるための昇降手段７０に連結されてい
る。該昇降手段７０は前記静止支持軸４４の上端部に固
定された円筒状のカムブロック７２を有しており、この
カムブロック７２の外周面には環状カム溝７２２が形成
されている。一方、軸体６４の各々の上端にはブラケッ
ト７４が固定され、該ブラケット７４にローラ７６が実
質上水平に延びる中心軸線を中心として回転自在に装着
されている。該ブラケット７４に装着されたローラ７６
の各々が、前記カムブロック７２の外周面に形成された
環状カム溝７２２に係合され、カム從動節として機能す
る。なお、ブラケット７４のカムブロック７２と対向す
る面は、図１０に示すようにカムブロック７２の外周面
と略同一半径の円弧面に形成されており、軸体６４のカ
ムブロック７２の外周面に沿った回動案内をするととも
に、軸体６４自身の回転を規制している。かくして、軸
体６４が回転支持体４８の回転に伴って回動せしめられ
る際に、軸体６４の各々は環状カム溝７２２の軌跡に従
って昇降せしめられる。これらカムブロック７２、ロー
ラ７６、ブラケット７４及び軸体６４によって、後述す
るカッタ及び容器蓋保持手段の移動手段を構成してい
る。The plurality of shaft bodies 64 are connected to an elevating means 70 for moving the shaft bodies 64 in the vertical direction. The elevating means 70 has a cylindrical cam block 72 fixed to the upper end of the stationary support shaft 44, and an annular cam groove 722 is formed on the outer peripheral surface of the cam block 72. On the other hand, a bracket 74 is fixed to the upper end of each shaft 64, and a roller 76 is rotatably mounted on the bracket 74 about a central axis extending substantially horizontally. Roller 76 mounted on the bracket 74
Each of them engages with an annular cam groove 722 formed on the outer peripheral surface of the cam block 72, and functions as a cam locomotion node. The surface of the bracket 74 facing the cam block 72 is formed as an arc surface having substantially the same radius as the outer peripheral surface of the cam block 72 as shown in FIG. Along with guiding the rotation, the rotation of the shaft 64 itself is restricted. Thus, when the shaft body 64 is rotated with the rotation of the rotation support body 48, each of the shaft bodies 64 is moved up and down according to the locus of the annular cam groove 722. The cam block 72, the roller 76, the bracket 74, and the shaft body 64 constitute a moving means for a cutter and a container lid holding means, which will be described later.

【００１７】前記複数本の軸体６４の各々下端には、図
１１に示すようにカッタ８０及び容器蓋保持手段９０が
装着されている。カッタ８０はカッタホルダ８２に２個
のビス８４によって取り付けられており、該カッタホル
ダ８２が前記軸体６４の下端に装着された円筒状の取付
部材１００の下端に２本のボルト１１０によって取付け
られている。該円筒状の取付部材１００は、その上端部
内周に雌ねじ１０２が形成されており、該雌ねじ１０２
を前記軸体６４の下端部に形成された雄ねじ６４２に螺
合することによって、軸体６４の下端に装着される。な
お、該円筒状の取付部材１００の下端には、フランジ部
１０４が形成されている。容器蓋保持手段９０は、内側
保持部材９２と外側保持部材９４とを有している。内側
保持部材９２は、その下端に容器蓋２の天面壁４裏面に
当接する押圧部９２２を備え、上端部には雌ねじ９２４
が形成されており、前記カッタホルダ８２に形成された
穴８２２を貫通して配設されている。該内側保持部材９
２の上端部に形成された雌ねじ９２４には、ばね座９３
２を備えたボルト９３が螺合されており、該ばね座９３
２と前記軸体６４との間にコイルスプリング１１２が配
設され、内側保持部材９２を常に下方に移動すべく偏倚
している。なお、内側保持部材９２はその上端部に装着
されたボルト９３のばね座９３２が、前記カッタホルダ
８２の上面に当接して下方への移動が規制されるように
なっている。外側保持部材９４は、環状乃至筒状に形成
され、前記取付部材１００及びカッタホルダ８２と勘合
して上下方向に摺動可能に配設されており、その下端内
周縁部に容器蓋２の下端外周縁部と係合する保持部９４
２が設けられている。外側保持部材９４には前記カッタ
ホルダ８２のカッタ取付部に対応する部分に切欠９４４
が形成されており、外切欠９４４とカッタホルダ８２の
カッタ取付部が嵌合することにより、外側保持部材９４
の回転が規制されるようになっている。この外側保持部
材９４は、その中間部に形成されたばね座９４６と前記
軸体６４の下部に取り付けられたばね受１１４（図９参
照）との間に配設されたコイルスプリング１１６によっ
て、常に下方に移動すべく偏倚されており、また、その
上端部内周に形成された係止部９４８が前記取付部材１
００の下端に形成されたフランジ部１０４に当接するこ
とによって、下方への移動が規制されるようになってい
る。なお、容器蓋保持手段９０の内側保持部材９２と外
側保持部材９４との関係においては、容器蓋保持手段９
０の下降時に外側保持部材９４が容器蓋２の下端外周縁
部（さらに詳しくはタンパーエビデント環状部１０の下
端周縁）に係合する以前に内側保持部材９２の押圧部９
２２が容器蓋２の天面壁４の裏面に当接し、上昇時にお
いては外側保持部材９４が容器蓋２の下端外周縁から離
脱した後に内側保持部材９２が容器蓋２の天面壁の裏面
から離脱するように構成されている。As shown in FIG. 11, a cutter 80 and a container lid holding means 90 are attached to the lower ends of the plurality of shaft bodies 64, respectively. The cutter 80 is attached to a cutter holder 82 by two screws 84, and the cutter holder 82 is attached to the lower end of a cylindrical attachment member 100 attached to the lower end of the shaft body 64 by two bolts 110. . The cylindrical mounting member 100 has an internal thread 102 formed on the inner periphery of the upper end thereof.
Is attached to the lower end of the shaft body 64 by screwing with a male screw 642 formed at the lower end of the shaft body 64. A flange portion 104 is formed at the lower end of the cylindrical mounting member 100. The container lid holding means 90 has an inner holding member 92 and an outer holding member 94. The inner holding member 92 includes a pressing portion 922 that abuts against the back surface of the top wall 4 of the container lid 2 at the lower end thereof, and an internal thread 924 at the upper end portion.
Is formed and penetrates through a hole 822 formed in the cutter holder 82. The inner holding member 9
The female screw 924 formed at the upper end of the
A bolt 93 provided with 2 is screwed, and the spring seat 93
A coil spring 112 is disposed between the shaft 2 and the shaft 64, and the inner holding member 92 is biased so as to always move downward. A spring seat 932 of a bolt 93 attached to the upper end of the inner holding member 92 comes into contact with the upper surface of the cutter holder 82 so that downward movement is restricted. The outer holding member 94 is formed in an annular shape or a tubular shape, and is fitted in the mounting member 100 and the cutter holder 82 so as to be slidable in the vertical direction. Holding part 94 engaging with the peripheral part
Two are provided. The outer holding member 94 has a cutout 944 at a portion corresponding to the cutter mounting portion of the cutter holder 82.
The outer holding member 94 is formed by fitting the outer notch 944 and the cutter attachment portion of the cutter holder 82.
The rotation of is regulated. The outer holding member 94 is constantly moved downward by a coil spring 116 arranged between a spring seat 946 formed in the middle of the outer holding member 94 and a spring receiver 114 (see FIG. 9) attached to the lower portion of the shaft 64. It is biased to move, and a locking portion 948 formed on the inner circumference of the upper end of the mounting member 1 is provided.
By contacting the flange portion 104 formed at the lower end of 00, the downward movement is restricted. Regarding the relationship between the inner holding member 92 and the outer holding member 94 of the container lid holding means 90, the container lid holding means 9
Before the outer holding member 94 engages with the outer peripheral edge of the lower end of the container lid 2 (more specifically, the lower peripheral edge of the annular portion 10 of the tamper-evidence part 10) at the time of descending 0, the pressing portion 9 of the inner retaining member 92 is pressed.
22 contacts the back surface of the top wall 4 of the container lid 2, and when rising, the outer holding member 94 separates from the lower peripheral edge of the lower end of the container lid 2, and then the inner holding member 92 separates from the back surface of the top wall of the container lid 2. Is configured to.

【００１８】図８を参照して説明すると、前記容器蓋載
置部４９と環状部材５１は、協働して容器蓋搬送手段を
構成する。回転支持部材４８が矢印５８で示す方向に回
転駆動せしめられると、容器蓋載置部４９及び環状部材
５１も矢印５８で示す方向に回転駆動せしめられ、該容
器蓋載置部４９及び環状部材５１は、供給域１４０、縦
スリット形成域１４４を含む保持域１４２及び排出域１
４６を順次に通る円形移動経路を通して移動せしめられ
る。供給域１４０においては、全体を符号１２０で示す
容器蓋供給手段によって前記容器蓋載置部４９上に容器
蓋２（かかる容器蓋は図１乃至図６示す形態であり、未
だ縦スリット２４が形成されていないものである）が倒
立状態で供給される。保持域１４２には、前記環状部材
５１の外周縁部に対して所定間隔を置いて円弧状に延び
る静止案内部材１５０が配設されている。この保持域１
４２において、前記容器蓋保持手段９０により容器蓋２
を前記容器蓋載置部４９上に倒立状態で保持し、この間
に縦スリット形成域１４４において、カッタ８０により
容器蓋２のタンパーエビデント環状部１０に、その下端
から弱化ラインに達する縦スリット２４を形成する。排
出域１４６には、縦スリットが形成された容器蓋を前記
容器蓋載置部４９から排出するための容器蓋排出手段１
６０が配設されている。Explaining with reference to FIG. 8, the container lid placing portion 49 and the annular member 51 cooperate to constitute a container lid conveying means. When the rotation support member 48 is rotationally driven in the direction indicated by the arrow 58, the container lid mounting portion 49 and the annular member 51 are also rotationally driven in the direction indicated by the arrow 58, and the container lid mounting portion 49 and the annular member 51. Is a supply area 140, a holding area 142 including a vertical slit forming area 144, and a discharge area 1.
It can be moved through a circular movement path that sequentially passes through 46. In the supply area 140, the container lid 2 is provided on the container lid mounting portion 49 by the container lid supply means indicated by reference numeral 120 (the container lid is in the form shown in FIGS. 1 to 6, and the vertical slit 24 is still formed). Not supplied) is supplied in an inverted state. In the holding area 142, a stationary guide member 150 extending in an arc shape is arranged at a predetermined distance from the outer peripheral edge of the annular member 51. This holding area 1
42, the container lid 2 is held by the container lid holding means 90.
Is held on the container lid mounting portion 49 in an inverted state, and in the vertical slit forming region 144, the cutter 80 is used to cover the tamper-evidence annular portion 10 of the container lid 2 and the vertical slit 24 reaching the weakening line from the lower end thereof. To form. In the discharge area 146, the container lid discharging means 1 for discharging the container lid having the vertical slit from the container lid placing portion 49.
60 are provided.

【００１９】図８を参照して容器蓋供給手段１２０につ
いて説明する。容器蓋供給手段１２０は、実質上鉛直方
向に延び回転自在に配設された回転軸１２２を有する。
この回転軸１２２には、略円板状のターレット板１２４
が固定されており、該ターレット板１２４の外周縁部に
は、周方向に間隔を置いて略半円形状の複数個（図示の
場合は９個）の切欠１２６が形成されている。該切欠１
２６の半径は、容器蓋２の外周半径に対応している。前
記ターレット板１２４の下方には、ターレット板１２４
の外周縁部に沿って円弧状に延びる部分１３２と、該円
弧状部分１３２の上流端（図８において左端）から図８
において左方へ直線状に延びる部分１３４とを有する静
止支持板１３０が配設されている。該静止支持板１３０
の上面は、前述した主部４０における容器蓋載置部４９
の上面と実質上同一レベルにあり、該静止支持板１３０
の前記円弧状部分１３２の下流端（図８において右端）
は、容器蓋載置部４９に近接せしめられている。静止支
持板１３０の前記直線状部分１３４の両側部上には、直
線上案内壁１３６及び１３８が設けられており、また、
静止支持板１３０の前記円弧状部分１３２外周縁部上に
は、ターレット板１２４の外周縁部に対して所定間隔を
置いて円弧状に延びる円弧状案内壁１３９が設けられて
いる。該円弧状案内壁１３９の下流端は、静止支持板１
３０の下流端を越えて前記容器蓋載置部４９上に突出し
ている。The container lid supply means 120 will be described with reference to FIG. The container lid supply means 120 has a rotation shaft 122 that extends substantially vertically and is rotatably arranged.
The rotating shaft 122 has a substantially disk-shaped turret plate 124.
Are fixed, and a plurality of substantially semicircular cutouts (nine in the illustrated case) 126 are formed at the outer peripheral edge of the turret plate 124 at intervals in the circumferential direction. The notch 1
The radius of 26 corresponds to the outer radius of the container lid 2. Below the turret plate 124 is a turret plate 124.
8 extending from the upstream end (the left end in FIG. 8) of the arc-shaped portion 132 to the arc-shaped portion 132 along the outer peripheral edge portion of FIG.
Is provided with a stationary support plate 130 having a portion 134 that linearly extends to the left. The stationary support plate 130
The upper surface of the container lid mounting portion 49 in the main portion 40 described above.
Of the stationary support plate 130 at substantially the same level as the upper surface of
Downstream end of the arcuate portion 132 (right end in FIG. 8)
Are placed close to the container lid mounting portion 49. Linear guide walls 136 and 138 are provided on both sides of the linear portion 134 of the stationary support plate 130, and
An arcuate guide wall 139 is provided on the outer peripheral edge of the arc-shaped portion 132 of the stationary support plate 130 and extends in an arcuate shape at a predetermined distance from the outer peripheral edge of the turret plate 124. The downstream end of the arc-shaped guide wall 139 has a stationary support plate 1
It projects beyond the downstream end of 30 onto the container lid mounting portion 49.

【００２０】次に、排出域１４６に配設された容器蓋排
出手段１６０について説明する。容器蓋排出手段１５０
は、一対の静止案内壁１６２及び１６４と静止案内板１
６６から構成されている。案内壁１６２は、排出域１４
６において前記円形移動経路に沿ってその外側を円弧状
に延び、次いで図８において上方に延びている。案内壁
１６４は、排出域１４６において前記円形移動経路に沿
ってその内側を円弧状に延び、次いで図８において上方
に延びている。該案内壁１６４の上流端部、即ち円弧状
に延びる部分は、図９から理解されるように、前記回転
支持体４８に固定されている前記環状部材５１の下方に
位置している。静止案内板１６６は、前記容器蓋載置部
４９に近接した上流端（図８において下端）から図８に
おいて上方へ延びている。静止案内板１６６の上面は、
前記容器蓋載置部４９の上面と実質上同一レベルに位置
せしめられている。Next, the container lid discharging means 160 arranged in the discharging area 146 will be described. Container lid discharging means 150
Is a pair of stationary guide walls 162 and 164 and the stationary guide plate 1.
It is composed of 66. The guide wall 162 is the discharge area 14
6 extends along the circular movement path in an arc shape on the outer side, and then extends upward in FIG. The guide wall 164 extends along the circular movement path in the discharge area 146 in a circular arc shape inside, and then extends upward in FIG. An upstream end portion of the guide wall 164, that is, a portion extending in an arc shape is located below the annular member 51 fixed to the rotary support 48, as understood from FIG. 9. The stationary guide plate 166 extends upward in FIG. 8 from an upstream end (lower end in FIG. 8) near the container lid mounting portion 49. The upper surface of the stationary guide plate 166 is
It is located substantially at the same level as the upper surface of the container lid mounting portion 49.

【００２１】以下、上述した合成樹脂製容器蓋における
縦スリット成形装置の作用について説明する。容器蓋供
給手段１２０の回転軸１２２及びターレット板１２４
は、前記電動モータ５６により駆動連結手段を介して、
前記回転支持体４８の回転（従って、前記環状部材５１
の回転）に同期して、矢印１２８で示す方向に回転駆動
せしめられる。縦スリットを形成すべき容器蓋２は、空
気流の如き適宜の搬送手段（図示せず）によって、静止
支持板１３０の直線状部分１３４上を図８において左方
から右方へ倒立状態で移動せしめられ、直線状部分１３
４の終端において、ターレット板１２４の切欠１２６に
収容される。該切欠１２６に収容された容器蓋２は、タ
ーレット板１２４の回転に伴って矢印１２８で示す方向
に前記環状部材５１と対向する位置まで搬送される。こ
の際、容器蓋２は円弧状案内壁１３９によって半径方向
外方へ離脱することが防止される。ターレット板１２４
によって環状部材５１と対向する位置まで搬送された容
器蓋２は、容器蓋載置部４９の上面に載置されるととも
に環状部材５１の切欠５１２に収容される。容器蓋載置
部４９上に載置され環状部材５１の切欠５１２に収容さ
れた容器蓋２は、それ以後、主部４０における回転支持
体４８の回転に従って、矢印５８で示す方向に搬送され
る。一方、前述のように容器蓋２が容器蓋載置部４９の
上面に載置されるとともに環状部材５１の切欠５１２に
収容された時点、即ち図１３において符号Ｐで示す位置
から主部４０における軸体６４及びその下端に装着され
たカッタ８０及び容器蓋保持手段９０が下降を開始す
る。そして、回転支持体４８が回転して軸体６４が保持
域１４２の始点である符号Ｑで示す位置に達すると、そ
の下端に装着された容器蓋保持手段９０における内側保
持部材９２の押圧部９２２が容器蓋２の天面壁４の裏面
に当接する。回転支持体４８が更に回転すると、軸体６
４は内側保持部材９２との間に配設されたコイルスプリ
ング１１２（図１１参照）のばね力に抗して更に下降せ
しめられ、その下端に装着された容器蓋保持手段９０の
外側保持部材９４が容器蓋２の下端外周縁部（さらに詳
しくはタンパーエビデント環状部１０の下端周縁）に係
合する。この状態が図１１に示すもので、外側保持部材
９４の下端内周縁部に形成された保持部９４２が、容器
蓋２のタンパーエビデント環状部１０の下端周縁と係合
し、内側保持部材９２とともに容器蓋２を容器蓋載置部
４９上に保持する。この時点において、カッタ８０も容
器蓋２のタンパーエビデント環状部１０の下端周縁と接
触する位置まで下降せしめられ、縦スリット形成域１４
４の始点である符号Ｒで示す位置に達する。この状態か
ら、回転支持体４８が更に回転すると、縦スリット形成
域１４４において軸体６４は、前記コイルスプリング１
１２及び外側保持部材９４との間に配設されたコイルス
プリング１１６のばね力に抗してタンパーエビデント環
状部１０の略軸方向長さだけ更に下降せしめられる。こ
の状態が図１２に示すもので、該軸体６４の下端に装着
されたカッタ８０によって、容器蓋２のタンパーエビデ
ント環状部１０には、その下端からスリット１８及び橋
絡部２０が形成された弱化ラインに達する縦スリットが
形成される。このように縦スリット形成域１４４におい
て容器蓋２のタンパーエビデント環状部１０に縦スリッ
トを形成した後、回転支持体４８が更に回転すると、縦
スリット形成域１４４の終点である符号Ｓで示す位置か
ら軸体６４は上昇せしめられる。このため、先ずカッタ
８０及び外側保持部材９４が容器蓋２のタンパーエビデ
ント環状部１０から離脱する。このとき、内側保持部材
９２の押圧部９２２がコイルスプリング１１２のばね力
によって容器蓋２の天面壁４の裏面を押圧しているの
で、外側保持部材９４の保持部９４２は、容器蓋２のタ
ンパーエビデント環状部１０の下端周縁との係合を容易
に解除することができる。次いで符号Ｔで示す保持域１
４２の終点から内側保持部材９２が容器蓋２の天面壁４
の裏面から離脱する。そして排出域１４６に入り、符号
Ｕで示す位置に達すると、内側保持部材９２の下端も容
器蓋２のタンパーエビデント環状部１０より上方に位置
せしめられる。この間に容器蓋２は、容器蓋排出手段１
６０の一対の静止案内壁１６２及び１６４と静止案内板
１６６のによって案内され、排出域１４６の終点付近に
達すると、空気流の如き適宜の搬送手段（図示せず）に
よって、図８において上方に移動せしめられ、容器蓋排
出手段１６０に沿って主部４０から排出される。The operation of the vertical slit forming device for the above-mentioned synthetic resin container lid will be described below. Rotating shaft 122 of container lid supply means 120 and turret plate 124
Is driven by the electric motor 56 via a drive connecting means.
Rotation of the rotary support 48 (hence the annular member 51
The rotation is driven in the direction indicated by the arrow 128 in synchronism with the rotation of FIG. The container lid 2 in which the vertical slit is to be formed is moved in an inverted state from the left side to the right side in FIG. 8 on the linear portion 134 of the stationary support plate 130 by an appropriate transfer means (not shown) such as an air flow. Straightened part 13
It is accommodated in the notch 126 of the turret plate 124 at the end of 4. The container lid 2 housed in the notch 126 is transported to the position facing the annular member 51 in the direction indicated by the arrow 128 as the turret plate 124 rotates. At this time, the container lid 2 is prevented from coming off in the radial direction by the arcuate guide wall 139. Turret board 124
The container lid 2 that has been conveyed to a position facing the annular member 51 by the above is placed on the upper surface of the container lid placing portion 49 and is accommodated in the notch 512 of the annular member 51. The container lid 2 placed on the container lid placing portion 49 and accommodated in the notch 512 of the annular member 51 is subsequently conveyed in the direction indicated by the arrow 58 in accordance with the rotation of the rotary support 48 in the main portion 40. . On the other hand, as described above, at the time when the container lid 2 is placed on the upper surface of the container lid placing portion 49 and is housed in the notch 512 of the annular member 51, that is, from the position indicated by the symbol P in FIG. The shaft 64, the cutter 80 attached to the lower end of the shaft 64, and the container lid holding means 90 start descending. Then, when the rotary support 48 rotates and the shaft 64 reaches the position indicated by the reference numeral Q, which is the starting point of the holding region 142, the pressing portion 922 of the inner holding member 92 in the container lid holding means 90 attached to the lower end thereof. Contacts the back surface of the top wall 4 of the container lid 2. When the rotary support 48 further rotates, the shaft 6
4 is further lowered against the spring force of a coil spring 112 (see FIG. 11) arranged between the inner holding member 92 and the outer holding member 94 of the container lid holding means 90 attached to the lower end thereof. Engages with the outer peripheral edge of the lower end of the container lid 2 (more specifically, the peripheral edge of the lower end of the tamper-evident annular portion 10). This state is shown in FIG. 11, and the holding portion 942 formed on the inner peripheral edge portion of the lower end of the outer holding member 94 engages with the lower end peripheral edge of the tamper-evidence annular portion 10 of the container lid 2, and the inner holding member 92. At the same time, the container lid 2 is held on the container lid mounting portion 49. At this point, the cutter 80 is also lowered to a position where it comes into contact with the lower end peripheral edge of the tamper-evidence annular portion 10 of the container lid 2, and the vertical slit forming area 14 is formed.
The position indicated by the symbol R, which is the starting point of 4, is reached. From this state, when the rotary support 48 further rotates, the shaft body 64 in the vertical slit formation region 144 moves the coil spring 1
12 and the outer holding member 94 are further lowered by the axial length of the tamper-evidence annular portion 10 against the spring force of the coil spring 116 disposed between the tamper-evident annular portion 10 and the outer holding member 94. This state is shown in FIG. 12, and a slit 80 and a bridging portion 20 are formed from the lower end of the tamper-evidence annular portion 10 of the container lid 2 by the cutter 80 attached to the lower end of the shaft body 64. A vertical slit reaching the weakened line is formed. After the vertical slit is formed in the tamper-evidence annular portion 10 of the container lid 2 in the vertical slit forming region 144 in this way, when the rotary support 48 is further rotated, the position indicated by the symbol S, which is the end point of the vertical slit forming region 144. Therefore, the shaft body 64 is raised. Therefore, first, the cutter 80 and the outer holding member 94 are separated from the tamper-evidence annular portion 10 of the container lid 2. At this time, since the pressing portion 922 of the inner holding member 92 presses the back surface of the top wall 4 of the container lid 2 by the spring force of the coil spring 112, the holding portion 942 of the outer holding member 94 is tampered with by the tamper of the container lid 2. The engagement with the peripheral edge of the lower end of the evidence annular portion 10 can be easily released. Next, the holding area 1 indicated by the symbol T
From the end point of 42, the inner holding member 92 is attached to the top wall 4 of the container lid 2.
Detach from the back side of. Then, when it enters the discharge area 146 and reaches the position indicated by the symbol U, the lower end of the inner holding member 92 is also positioned above the tamper-evidence annular portion 10 of the container lid 2. In the meantime, the container lid 2 is the container lid discharging means 1
Guided by a pair of stationary guide walls 162 and 164 and a stationary guide plate 166 of 60, when it reaches near the end point of the discharge area 146, it is moved upward in FIG. It is moved and discharged from the main portion 40 along the container lid discharging means 160.

【００２２】以上のようにして、容器蓋２のタンパーエ
ビデント環状部１０に、その下端からスリット１８及び
橋絡部２０が形成された弱化ラインに達する縦スリット
２４を形成することができるが、カッタ８０の長さによ
っては不具合が生ずることがある。即ち、図１乃至図３
に示すように容器蓋２のタンパーエビデント環状部１０
の内周面に形成された係止片２２が、半径方向内方に突
出している場合は問題はないが、図４乃至図６に示すよ
うに容器蓋２のタンパーエビデント環状部１０の内周面
に形成された係止片２７が、その先端が周方向に傾斜し
て形成されているものにおいては、カッタ８０の長さが
長いと、係止片２７の先端部を切り落としてしまう場合
がある。容器蓋２のタンパーエビデント環状部１０に形
成する縦スリットを係止片２７が存在しない部分に位置
決めして、カッタ８０により縦スリットを成形すればよ
いが、その都度位置決めすることは、大量生産に適しな
い。従って、容器蓋２の位置決めをすることなく縦スリ
ットを成形すると、図７に示すようにカッタ８０が係止
片２７上に位置し、しかもカッタ８０が係止片２７の先
端より内方に長い場合は、係止片２７の先端部を切り落
としてしまう。この切り落とされた片が容器蓋２の中に
残されたまま使用されると、容器蓋としての機能が損な
われることがある。従って、縦スリットを成形した後に
これを容器蓋から取り除く作業が必要となり、生産性の
面から好ましくない。As described above, the tamper-evidence annular portion 10 of the container lid 2 can be formed with the vertical slit 24 extending from the lower end to the weakening line where the slit 18 and the bridging portion 20 are formed. Problems may occur depending on the length of the cutter 80. That is, FIGS.
The tamper-evident annular part 10 of the container lid 2 as shown in FIG.
There is no problem if the locking piece 22 formed on the inner peripheral surface of the container protrudes inward in the radial direction, but as shown in FIGS. 4 to 6, inside the tamper-evident annular portion 10 of the container lid 2. In the case where the tip of the locking piece 27 formed on the peripheral surface is inclined in the circumferential direction, if the length of the cutter 80 is long, the tip of the locking piece 27 may be cut off. There is. The vertical slit formed in the tamper-evidence annular portion 10 of the container lid 2 may be positioned at a portion where the locking piece 27 does not exist, and the vertical slit may be formed by the cutter 80. Not suitable for. Therefore, if the vertical slit is formed without positioning the container lid 2, the cutter 80 is located on the locking piece 27 as shown in FIG. 7, and the cutter 80 is longer inward than the tip of the locking piece 27. In this case, the tip of the locking piece 27 is cut off. If the cut off piece is used while being left in the container lid 2, the function as the container lid may be impaired. Therefore, after forming the vertical slit, it is necessary to remove the vertical slit from the container lid, which is not preferable from the viewpoint of productivity.

【００２３】従って、本実施例においては、カッタ８０
の長さは、係止片２７の先端部を切断分離しない値に設
定されている。図７で示す例によれば、カッタ８０の長
さは、タンパーエビデント環状部１０の下端に形成され
たカール部２８は切断するが、係止片２７の先端部をタ
ンパーエビデント環状部１０から切断分離しない値に、
好ましくは２点鎖線で示すように係止片２７の傾斜方向
後面２７２から幅αだけ残して切断する値に設定する。
この幅αは、係止片２７の傾斜方向後面２７２近傍、例
えば係止片２７の厚さが０．５ｍｍ程度であれば、略
０．５ｍｍ程度が好ましい。即ち、開栓後に縦スリット
が成形された係止片を手で切断するのに、接続部の面積
が０．２５ｍｍ2 程度であれば、苦にならない強度であ
るからである。本実施例においては、更にカッタ８０の
配設角度も設定している。即ち、タンパーエビデント環
状部１０の下端にカール部を備えないものにおいては、
係止片２７の傾斜方向後面２７２の傾斜角が略３０度に
形成されている場合、係止片２７付け根の傾斜方向前端
２７６とタンパーエビデント環状部１０の軸芯Ｏとを結
ぶ線に対して、傾斜方向に略３０度、傾斜方向と反対方
向に略４０度の範囲に、カッタ８０を配設する。また、
タンパーエビデント環状部１０の下端にカール部２８を
備えたものにおいては、係止片２７の傾斜方向後面２７
２の傾斜角が略３０度に形成されている場合、係止片２
７つけ根の傾斜方向前端２３３とタンパーエビデント環
状部１０の軸芯Ｏとを結ぶ線に対して、傾斜方向に略２
５度、傾斜方向と反対方向に略４０度の範囲にカッタ８
０を配設し、前記係止片付け根の傾斜方向前端２３３か
ら内方へのカッタ長さを、係止片付け根の傾斜方向前端
２７６からカール部２８の内周面までより長く、係止片
付け根の傾斜方向前端２７６から係止片２７の傾斜方向
後面までより短い値に設定される。更に、係止片２７つ
け根の傾斜方向前端２７６とタンパーエビデント環状部
１０の軸芯Ｏとを結ぶ線に対して、傾斜方向に略２５度
から略３０度の範囲にカッタ８０を配設する。この場合
は、カッタの上限長さを規制する必要はない。以上、添
付図面を参照して本発明の好適実施例について説明した
が、本発明は図示の実施例に限定されるものではなく、
本発明の技術思想の範囲を逸脱することなく、種々の変
形が可能である。Therefore, in the present embodiment, the cutter 80
Is set to a value that does not cut and separate the tip portion of the locking piece 27. According to the example shown in FIG. 7, the length of the cutter 80 cuts the curl portion 28 formed at the lower end of the tamper-evidence annular portion 10, but the tip of the locking piece 27 is cut. To a value that does not separate from
Preferably, it is set to such a value that the width α is cut from the rear surface 272 in the inclined direction of the locking piece 27 as shown by the chain double-dashed line.
This width α is preferably about 0.5 mm in the vicinity of the rear surface 272 of the locking piece 27 in the inclined direction, for example, if the thickness of the locking piece 27 is about 0.5 mm. That is, it is because the strength is not so great when the area of the connecting portion is about 0.25 mm 2 for manually cutting the locking piece having the vertical slit formed after opening. In the present embodiment, the arrangement angle of the cutter 80 is also set. That is, in the case where the lower end of the tamper-evidence annular portion 10 is not provided with a curl portion,
When the inclination angle of the rear surface 272 in the inclination direction of the locking piece 27 is formed to be approximately 30 degrees, with respect to the line connecting the front end 276 in the inclination direction of the root of the locking piece 27 and the axis O of the tamper-evident annular portion 10. Then, the cutter 80 is arranged in the range of about 30 degrees in the tilt direction and about 40 degrees in the direction opposite to the tilt direction. Also,
In the case where the tamper-evident annular portion 10 is provided with the curl portion 28 at the lower end, the rear surface 27 of the locking piece 27 in the inclination direction is used.
When the inclination angle of 2 is approximately 30 degrees, the locking piece 2
7 about 2 in the direction of inclination with respect to the line connecting the front end 233 of the base of the base in the direction of inclination and the axis O of the tamper-evident annular portion 10.
Cutter 8 in the range of 5 degrees and approximately 40 degrees in the direction opposite to the tilt direction
0 is provided so that the cutter length from the front end 233 of the locking piece root in the inclined direction to the inside is longer than that from the front end 276 of the locking piece root in the inclined direction to the inner peripheral surface of the curl portion 28. It is set to a shorter value from the front end 276 of the root in the tilt direction to the rear surface of the locking piece 27 in the tilt direction. Further, the cutter 80 is arranged in the range of approximately 25 degrees to approximately 30 degrees in the inclination direction with respect to the line connecting the front end 276 of the base of the locking piece 27 in the inclination direction and the axis O of the tamper-evident annular portion 10. . In this case, it is not necessary to regulate the upper limit length of the cutter. Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the illustrated embodiments,
Various modifications can be made without departing from the scope of the technical idea of the present invention.

【００２４】[0024]

【発明の効果】以上説明したように、本発明によれば、
タンパーエビデント環状部の内周面に係止片を備えた容
器蓋においても、タンパーエビデント環状部の下端から
弱化ラインに達する縦スリットを容易に形成することが
できる。従って、該縦スリット部は容器蓋の開栓時に確
実に破壊され、タンパーエビデント環状部を容器頸部に
係合した状態で残すことなく、確実に除去することがで
きる。また、タンパーエビデント環状部の内周面に形成
された係止片の先端が周方向に傾斜して形成されている
容器蓋においても、縦スリット成形時に係止片の先端部
を切り落とすことがないため、縦スリット成形後に切り
落とし片の除去作業が不要となる。As described above, according to the present invention,
Also in the container lid provided with the locking piece on the inner peripheral surface of the tamper-evident annular portion, the vertical slit reaching the weakening line from the lower end of the tamper-evident annular portion can be easily formed. Therefore, the vertical slit portion is surely broken when the container lid is opened, and can be reliably removed without leaving the tamper-evidence annular portion in a state of engaging the container neck portion. Further, even in a container lid in which the tip of the locking piece formed on the inner peripheral surface of the tamper-evident annular portion is inclined in the circumferential direction, the tip of the locking piece can be cut off during vertical slit molding. Since there is no vertical slit, it is not necessary to remove the cut-off piece after forming the vertical slit.

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

【図１】本発明による縦スリット成形方法によって縦ス
リットが形成された合成樹脂製容器蓋の一例を示すもの
で、一部を破断して示す正面図。FIG. 1 is a front view showing an example of a synthetic resin container lid in which vertical slits are formed by a vertical slit forming method according to the present invention, a part of which is cut away.

【図２】図１に示す合成樹脂製容器蓋の底面図。FIG. 2 is a bottom view of the synthetic resin container lid shown in FIG.

【図３】図１に示す合成樹脂製容器蓋を容器頸部に装着
した状態を示すもので、一部を破断して示す正面図。FIG. 3 is a front view showing a state in which the synthetic resin container lid shown in FIG. 1 is attached to a container neck, a part of which is cut away.

【図４】図４は本発明による縦スリット成形方法によっ
て縦スリットが形成された合成樹脂製容器蓋の他の例を
示すもので、一部を破断して示す正面図。FIG. 4 is a front view showing another example of a synthetic resin container lid having vertical slits formed by the vertical slit forming method according to the present invention, with a part thereof broken away.

【図５】図４に示す合成樹脂製容器蓋の底面図。5 is a bottom view of the synthetic resin container lid shown in FIG. 4. FIG.

【図６】図４に示す合成樹脂製容器蓋を容器頸部に装着
した状態を示すもので、一部を破断して示す正面図。6 is a front view showing a state in which the synthetic resin container lid shown in FIG. 4 is attached to a container neck, and a part of the container lid is cut away.

【図７】容器蓋のタンパーエビデント環状部に形成され
る係止片と縦スリットとの関係を示す説明図。FIG. 7 is an explanatory diagram showing a relationship between a locking piece formed on the tamper-evidence annular portion of the container lid and a vertical slit.

【図８】容器蓋のタンパーエビデント環状部に縦スリッ
ト２４を形成するための、本発明に従って構成された装
置の一実施例を示す一部を破断した平面図。FIG. 8 is a partially cutaway plan view showing an embodiment of an apparatus configured according to the present invention for forming a vertical slit 24 in the tamper-evident annular portion of the container lid.

【図９】図８におけるＢ−Ｂ線断面図。9 is a sectional view taken along line BB in FIG.

【図１０】図９におけるＣ−Ｃ線断面図。10 is a cross-sectional view taken along the line CC in FIG.

【図１１】図８乃至図１０に示す装置に用いられるカッ
タ及び容器蓋保持手段の拡大断面図。11 is an enlarged cross-sectional view of a cutter and container lid holding means used in the device shown in FIGS. 8 to 10. FIG.

【図１２】図８乃至図１０に示す装置に用いられるカッ
タ及び容器蓋保持手段の縦スリット成形時を示す拡大断
面図。12 is an enlarged cross-sectional view showing a cutter and a container lid holding means used in the apparatus shown in FIGS. 8 to 10 during vertical slit forming.

【図１３】図８乃至図１０に示す装置に用いられるカッ
タ及び容器蓋保持手段の昇降状態を示す説明図。FIG. 13 is an explanatory view showing a lifted state of a cutter and a container lid holding means used in the apparatus shown in FIGS. 8 to 10.

【符号の説明】[Explanation of symbols]

２：合成樹脂製容器蓋 ４：天面壁 ６：スカート部 ８：接続部 １０：タンパーエビデント環状部 １８：スリット ２０：橋絡部 ２２：係止片 ２２：係止片 ２４：縦スリット ２７：係止片 ２８：カール部 ４０：主部 ４２：静止基台 ４４：静止支持軸 ４８：回転支持体 ４９：容器蓋載置部 ５６：回転駆動源 ６４：軸体 ７０：昇降手段 ７２：カムブロック ８０：カッタ ９０：容器蓋保持手段 ９２：内側保持部材 ９４：外側保持部材 １２０：容器蓋供給手段 １２２：回転軸 １２４：ターレット板 １６０：容器蓋排出手段 2: Synthetic resin container lid 4: Top wall 6: Skirt part 8: Connection part 10: Tamper-evidence annular part 18: Slit 20: Bridge part 22: Locking piece 22: Locking piece 24: Vertical slit 27: Locking piece 28: Curl portion 40: Main portion 42: Stationary base 44: Stationary support shaft 48: Rotation support body 49: Container lid mounting portion 56: Rotational drive source 64: Shaft body 70: Lifting means 72: Cam block 80: Cutter 90: Container Lid Holding Means 92: Inner Holding Member 94: Outer Holding Member 120: Container Lid Supplying Means 122: Rotation Shaft 124: Turret Plate 160: Container Lid Discharging Means

Claims (12)

【特許請求の範囲】[Claims] 【請求項１】 天面壁と該天面壁から垂下し内周面に容
器頸部に係合する雌ねじを備えたスカート部とからなる
蓋本体と、該スカート部の下端に接続部を介して一体に
形成され内周面に係止片を備えたタンパーエビデント環
状部とからなり、該接続部に周方向に形成された弱化ラ
インと、該タンパーエビデント環状部の下端から該弱化
ラインに達する縦スリットとを備えた合成樹脂製容器蓋
における縦スリットを成形する方法において、 該容器蓋を容器載置部に倒立した状態で載置する工程
と、 該載置された容器蓋を該容器載置部に保持する工程と、 該保持された容器蓋に対してその軸方向にカッタを移動
させ、該タンパーエビデント環状部の下端から該弱化ラ
インに達する縦スリットを成形する工程と、 を含むことを特徴とする合成樹脂製容器蓋における縦ス
リット成形方法。1. A lid main body comprising a top wall and a skirt portion having a female thread hanging down from the top wall and engaging an inner peripheral surface with a container neck portion; and a lower end of the skirt portion integrally formed with a connecting portion. A tamper-evidence annular portion formed on the inner peripheral surface with a locking piece, and a weakening line formed in the connection portion in the circumferential direction, and the weakening line reaching from the lower end of the tamper-evident annular portion. In a method of forming a vertical slit in a synthetic resin container lid having a vertical slit, a step of placing the container lid in an inverted state on a container placing part, and placing the placed container lid on the container placing part. And a step of moving the cutter in the axial direction with respect to the held container lid to form a vertical slit reaching the weakening line from the lower end of the tamper-evidence annular portion. Synthetic resin characterized by Longitudinal slits forming method in the container closure. 【請求項２】 天面壁と該天面壁から垂下し内周面に容
器頸部に係合する雌ねじを備えたスカート部とからなる
蓋本体と、該スカート部の下端に接続部を介して一体に
形成され内周面に周方向に傾斜する複数の係止片を備え
たタンパーエビデント環状部とからなり、該接続部に周
方向に形成された弱化ラインと、該タンパーエビデント
環状部の下端から該弱化ラインに達する縦スリットとを
備えた合成樹脂製容器蓋における縦スリットを成形する
方法において、 該容器蓋を容器載置部に倒立した状態で載置する工程
と、 該載置された容器蓋を該容器載置部に保持する工程と、 該保持された容器蓋に対してその軸方向にカッタを移動
させ、該タンパーエビデント環状部の下端から該弱化ラ
インに達する縦スリットを成形する工程と、を含み、 該カッタの長さを、該係止片を切断分離しない値に設定
した、 ことを特徴とする合成樹脂製容器蓋における縦スリット
成形方法。2. A lid main body comprising a ceiling wall and a skirt portion having a female thread hanging down from the ceiling wall and engaging an inner peripheral surface with a container neck portion, and a lower end of the skirt portion integrated with a connecting portion. A tamper-evidence annular portion having a plurality of locking pieces inclined in the inner peripheral surface in the circumferential direction, and a weakening line formed in the connecting portion in the circumferential direction, and the tamper-evidence annular portion. A method of forming a vertical slit in a synthetic resin container lid having a vertical slit reaching a weakening line from a lower end thereof, comprising the step of placing the container lid in an inverted state on a container placing part, and A step of holding the container lid on the container mounting portion, and a cutter is moved in the axial direction with respect to the held container lid to form a vertical slit from the lower end of the tamper-evidence annular portion to the weakening line. And a step of molding, The length of the cutter was set to a value that does not cut and separated locking piece, longitudinal slits forming methods in synthetic resin container closure, characterized in that. 【請求項３】 該係止片の傾斜方向後面の傾斜角が略３
０度に形成されており、該カッタを、該係止片付け根の
傾斜方向前端と該タンパーエビデント環状部の軸心とを
結ぶ線に対して傾斜方向に略３０度、傾斜方向と反対方
向に略４０度の範囲に配設する、請求項２記載の合成樹
脂製容器蓋における縦スリット成形方法。3. The inclination angle of the rear surface of the locking piece in the inclination direction is approximately 3.
The cutter is formed at 0 degrees, and the cutter is inclined by about 30 degrees with respect to a line connecting the front end of the locking piece base in the inclination direction and the axis of the tamper-evident annular portion, and the direction opposite to the inclination direction. The method for forming a vertical slit in a synthetic resin container lid according to claim 2, wherein the method is provided in a range of approximately 40 degrees. 【請求項４】 天面壁と該天面壁から垂下し内周面に容
器頸部に係合する雌ねじを備えたスカート部とからなる
蓋本体と、該スカート部の下端に接続部を介して一体に
形成され内周面に先端が周方向に傾斜する複数の係止片
を備え下端に内向きにカールした周状のカール部を形成
したタンパーエビデント環状部とからなり、該接続部に
周方向に形成された弱化ラインと、該タンパーエビデン
ト環状部の下端から該弱化ラインに達する縦スリットと
を備えた合成樹脂製容器蓋における縦スリットを成形す
る方法において、 該容器蓋を容器載置部に倒立した状態で載置する工程
と、 該載置された容器蓋を該容器載置部に保持する工程と、 該保持された容器蓋に対してその軸方向にカッタを移動
させ、該タンパーエビ デント環状部の下端から該弱化ラインに達する縦スリッ
トを成形する工程と、を含み、 該カッタの長さを、該カール部は切断し該係止片を切断
分離しない値に設定した、 ことを特徴とする合成樹脂製容器蓋における縦スリット
成形方法。4. A lid main body comprising a top wall and a skirt portion having a female screw hanging down from the top wall and engaging with the container neck portion on the inner peripheral surface, and a lower end of the skirt portion integrated with a connecting portion. A tamper-evidence annular portion having a plurality of locking pieces formed on its inner peripheral surface with its tip inclined in the circumferential direction and having a curl portion inwardly curled at its lower end. Forming a vertical slit in a synthetic resin container lid having a weakening line formed in a direction and a vertical slit reaching from the lower end of the tamper-evidence annular portion to the weakening line. Placing the container lid on the container in an inverted state, holding the placed container lid on the container placing portion, moving the cutter in the axial direction with respect to the held container lid, From the lower end of the tamper-evident annular part, Forming a vertical slit reaching the line, and setting the length of the cutter to a value at which the curl portion is cut and the locking piece is not cut and separated. Vertical slit forming method in. 【請求項５】 該係止片の傾斜方向後面の傾斜角が略３
０度に形成されており、該カッタは、該係止片付け根の
傾斜方向前端と該タンパーエビデント環状部の軸心とを
結ぶ線に対して傾斜方向に略２５度、傾斜方向と反対方
向に略４０度の範囲に配設し、該係止片付け根の傾斜方
向前端から内方へのカッタ長さを、該付け根の傾斜方向
前端から該カール部内周面までより長く、該付け根の傾
斜方向前端から該係止片の傾斜方向後面までより短い値
に設定した、請求項４記載の合成樹脂製容器蓋における
縦スリット成形方法。5. The inclination angle of the rear surface of the locking piece in the inclination direction is approximately 3.
The cutter is formed at 0 degrees, and the cutter is approximately 25 degrees in the inclination direction with respect to a line connecting the front end of the engagement piece root in the inclination direction and the axis of the tamper-evidence annular portion, and the direction opposite to the inclination direction. Is arranged in a range of approximately 40 degrees, and the cutter length from the front end in the inclination direction of the locking piece root is longer than the front end in the inclination direction of the root to the inner peripheral surface of the curl portion, and the inclination of the root is The method for forming vertical slits in a synthetic resin container lid according to claim 4, wherein the value is set to be shorter from the front end in the direction to the rear surface in the inclination direction of the locking piece. 【請求項６】 該係止片の傾斜方向後面の傾斜角が略３
０度に形成されており、該カッタは、該係止片付け根の
傾斜方向前端と該タンパーエビデント環状部の軸心とを
結ぶ線に対して傾斜方向に略２５度から略３０度の範囲
に配設した、請求項４記載の合成樹脂製容器蓋における
縦スリット成形方法。6. The tilt angle of the rear surface of the locking piece in the tilting direction is approximately 3.
The cutter is formed at 0 degrees, and the cutter is in the range of approximately 25 degrees to approximately 30 degrees in the inclination direction with respect to the line connecting the inclination direction front end of the locking piece root and the axis center of the tamper-evident annular portion. The method for forming a vertical slit in a synthetic resin container lid according to claim 4, wherein the vertical slit is formed. 【請求項７】 天面壁と該天面壁から垂下し内周面に容
器頸部に係合する雌ねじを備えたスカート部とからなる
蓋本体と、該スカート部の下端に接続部を介して一体に
形成されタンパーエビデント環状部とからなり、該接続
部に周方向に形成された弱化ラインと、該タンパーエビ
デント環状部の下端から該弱化ラインに達する縦スリッ
トとを備えた合成樹脂製容器蓋における縦スリットを成
形する装置において、 静止基台と、 該静止基台に回転自在に支持された回転支持体と、 該回転支持体に配設けられた容器蓋載置部と、 該回転支持体に周方向に間隔を置いて配設され、該容器
蓋載置部に載置された容器蓋を倒立状態で保持する容器
蓋保持手段と、 該容器蓋載置部に倒立状態で保持された容器蓋のタンパ
ーエビデント環状部の下端に対向して配設され、タンパ
ーエビデント環状部に縦スリットを成形するカッタと、 該カッタを該容器蓋載置部に倒立状態で保持された容器
蓋の弱化ラインまで移動させるカッタ移動手段と、 該回転支持体に配設された該容器蓋載置部、該容器蓋保
持手段及びカッタを供給域、保持域、縦スリット成形域
及び排出域を順次に通るように該回転支持体を回転せし
める駆動手段と、 該供給域において該容器蓋載置部に容器蓋を倒立状態で
供給するための容器蓋供給手段と、 該排出域において該容器蓋載置部に載置された該容器蓋
を排出するための容器蓋排出手段と、 を具備することを特徴とする合成樹脂製容器蓋における
縦スリット成形装置。7. A lid main body comprising a top wall and a skirt portion having a female thread hanging down from the top wall and engaging with the container neck on the inner peripheral surface, and a lid body integrally formed at the lower end of the skirt portion through a connecting portion. A container made of tamper-evidence annular portion, and a weakening line formed in the connecting portion in the circumferential direction, and a vertical resin slit extending from the lower end of the tamper-evident annular portion to the weakening line. In a device for forming a vertical slit in a lid, a stationary base, a rotary support rotatably supported by the stationary base, a container lid placing portion provided on the rotary support, and the rotary support. Container lid holding means, which are arranged at intervals in the circumferential direction on the body and hold the container lid placed on the container lid placing section in an inverted state, and are held in the container lid placing section in an inverted state. The bottom of the tamper-evidence annulus of the container lid A cutter for forming a vertical slit in the tamper-evidence annular part, a cutter moving means for moving the cutter to the weakening line of the container lid held in an inverted state on the container lid placing part, and the rotation. Driving means for rotating the rotary support so that the container lid placing part, the container lid holding means and the cutter arranged on the support sequentially pass through the supply area, the holding area, the vertical slit forming area and the discharge area. A container lid supply means for supplying the container lid to the container lid mounting portion in an inverted state in the supply area, and discharging the container lid mounted on the container lid mounting portion in the discharge area. A vertical slit forming device for a synthetic resin container lid, comprising: 【請求項８】 該容器蓋保持手段が該供給域、保持域、
縦スリット成形域及び排出域を順次移動する際に、該容
器蓋保持手段を所要通りに昇降せしめる昇降手段を付設
し、該昇降手段は、該供給域においては該容器蓋保持手
段を上昇せしめており、該保持域及び該縦スリット成形
域においては該容器蓋保持手段を下降位置に位置せしめ
て容器蓋を該容器蓋載置部に倒立状態で保持させ、該排
出域においては該容器蓋保持手段を上昇せしめて容器蓋
から離脱せしめる、請求項７記載の合成樹脂製容器蓋に
おける縦スリット成形装置。8. The container lid holding means comprises the supply area, the holding area,
When the vertical slit forming area and the discharge area are sequentially moved, an elevating means for raising and lowering the container lid holding means as required is attached, and the elevating means raises the container lid holding means in the supply area. In the holding area and the vertical slit forming area, the container lid holding means is positioned in the lowered position to hold the container lid on the container lid placing portion in an inverted state, and in the discharge area, the container lid holding The vertical slit forming device for a synthetic resin container lid according to claim 7, wherein the means is lifted up to be removed from the container lid. 【請求項９】 該容器蓋保持手段は、容器蓋内に挿入さ
れ容器蓋の天面壁の裏面を押圧する内側保持部材と、容
器蓋のタンパーエビデント環状部の下端周縁に係合する
外側保持部材とを有する、請求項８記載の合成樹脂製容
器蓋における縦スリット成形装置。9. The container lid holding means includes an inner holding member that is inserted into the container lid and presses a back surface of a top wall of the container lid, and an outer holding member that engages with a lower end peripheral edge of a tamper-evidence annular portion of the container lid. 9. A vertical slit forming device for a synthetic resin container lid according to claim 8, further comprising: a member. 【請求項１０】 該容器蓋保持手段の該内側保持部材及
び外側保持部材は、下降時においては該外側保持部材が
容器蓋のタンパーエビデント環状部の下端周縁に係合す
る以前に該内側保持部材が容器蓋の天面壁の裏面に当接
し、上昇時においては該外側保持部材が容器蓋のタンパ
ーエビデント環状部の下端周縁から離脱した後に該内側
保持部材が容器蓋の天面壁の裏面から離脱するように構
成した、請求項９記載の合成樹脂製容器蓋における縦ス
リット成形装置。10. The inner holding member and the outer holding member of the container lid holding means, when descending, the inner holding member before the outer holding member engages with a lower end peripheral edge of the tamper-evidence annular portion of the container lid. The member comes into contact with the rear surface of the top wall of the container lid, and when rising, the outer holding member separates from the lower end peripheral edge of the tamper-evidence annular portion of the container lid, and then the inner holding member comes from the rear surface of the top wall of the container lid. The vertical slit forming device for a synthetic resin container lid according to claim 9, which is configured to be detached. 【請求項１１】 カッタ移動手段は、該カッタが該供給
域、保持域、縦スリット成形域及び排出域を順次移動す
る際に、該カッタを所要通りに昇降せしめる昇降手段を
備え、該昇降手段は、該縦スリット成形域において該カ
ッタを倒立状態で保持された容器蓋の弱化ラインまで下
降せしめ、該排出域においては該カッタを上昇せしめて
容器蓋から離脱せしめるように構成した、請求項７記載
の合成樹脂製容器蓋における縦スリット成形装置。11. The cutter moving means comprises an elevating means for elevating and lowering the cutter as required when the cutter sequentially moves in the supply area, holding area, vertical slit forming area and discharge area. 7. The structure is configured such that in the vertical slit forming area, the cutter is lowered to a weakening line of the container lid held in an inverted state, and in the discharge area, the cutter is raised to be detached from the container lid. A vertical slit forming device for the synthetic resin container lid described. 【請求項１２】 該容器蓋保持手段及びカッタが該供給
域、保持域、縦スリット成形域及び排出域を順次移動す
る際に、該容器蓋保持手段及び該カッタを所要通りに昇
降せしめる共通の昇降手段を付設するとともに、該容器
蓋保持手段と該カッタとを相対移動可能に構成し、該共
通の昇降手段は、該供給域においては該保持手段及び該
カッタを上昇せしめており、該保持域及び該縦スリット
成形域においては該容器蓋保持手段を下降位置に位置せ
しめるとともに、該縦スリット成形域において該カッタ
を倒立状態で保持された容器蓋の該弱化ラインまで下降
せしめ、該排出域において該容器蓋保持手段及び該カッ
タを上昇せしめて該容器蓋から離脱せしめるように構成
した、請求項７記載の合成樹脂製容器蓋における縦スリ
ット成形装置。12. A common holder for raising and lowering the container lid holding means and the cutter as required when the container lid holding means and the cutter sequentially move in the supply area, holding area, vertical slit forming area and discharge area. The container lid holding means and the cutter are configured to be capable of moving relative to each other while the elevating means is attached, and the common elevating means raises the holding means and the cutter in the supply area. In the area and the vertical slit forming area, the container lid holding means is positioned at the lowered position, and in the vertical slit forming area, the cutter is moved down to the weakening line of the container lid held in an inverted state, and the discharge area is formed. 8. The vertical slit forming device for a synthetic resin container lid according to claim 7, wherein said container lid holding means and said cutter are lifted to separate from said container lid.
JP04261393A 1993-03-03 1993-03-03 Method and apparatus for forming vertical slit in container lid made of synthetic resin Expired - Fee Related JP3208613B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04261393A JP3208613B2 (en) 1993-03-03 1993-03-03 Method and apparatus for forming vertical slit in container lid made of synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04261393A JP3208613B2 (en) 1993-03-03 1993-03-03 Method and apparatus for forming vertical slit in container lid made of synthetic resin

Publications (2)

Publication Number Publication Date
JPH06255666A true JPH06255666A (en) 1994-09-13
JP3208613B2 JP3208613B2 (en) 2001-09-17

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ID=12640877

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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003072795A (en) * 2001-08-27 2003-03-12 Japan Crown Cork Co Ltd Cap made of synthetic resin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003072795A (en) * 2001-08-27 2003-03-12 Japan Crown Cork Co Ltd Cap made of synthetic resin

Also Published As

Publication number Publication date
JP3208613B2 (en) 2001-09-17

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