JPH0454121Y2 - - Google Patents
Info
- Publication number
- JPH0454121Y2 JPH0454121Y2 JP1985172473U JP17247385U JPH0454121Y2 JP H0454121 Y2 JPH0454121 Y2 JP H0454121Y2 JP 1985172473 U JP1985172473 U JP 1985172473U JP 17247385 U JP17247385 U JP 17247385U JP H0454121 Y2 JPH0454121 Y2 JP H0454121Y2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- plug member
- cylindrical
- inner plug
- outer diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 17
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000010112 shell-mould casting Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Landscapes
- Closures For Containers (AREA)
Description
この考案は、容器の口部に装着されて注ぎ口を
形成する中栓部材を備えたキヤツプ、いわゆるポ
アリツプキヤツプに関するものである。
This invention relates to a cap provided with an inner stopper member that is attached to the mouth of a container to form a spout, a so-called pour lip cap.
従来、実公昭34−5893号公報に記載されている
ものが知られている。この公報には、第５図に示
すように天井２０と周壁２１とを有する円筒状の
蓋２２と、筒部２４と鍔縁２５と注下部２６とか
らなる差込材２７とが記載されている。前記差込
材２７は、ポリエチレンあるいは類似の材料から
なり、その筒部２４を瓶２８の口部２９に弾性的
に差し込み、鍔縁２５を瓶２８の口部２９の内周
面に当接させて装着されるもので、瓶２８の内容
液が瓶２８の外側に沿って流下するのを防止でき
るものである。
ところで、前記公報に記載の差込材２７にあつ
ては、これを瓶口部に装着する場合、蓋２２と別
に装着しなければならない不満があつた。
そこで本考案者は、同様の機能を有し、しかも
蓋２２と一緒に瓶口部に装着できるキヤツプ用ガ
スケツトを実開昭57−186357号公報で提案した。
第６図に示すように、このガスケツト４２は、
鍔縁２５の外方にブリツジ４０を介して環状部材
４１を設けたものである。このガスケツト４２に
おいては、第７図に示すように、蓋２２の内側に
ガスケツト４２の環状部材４１をはめ込み、蓋２
２と一体化した状態で瓶の口部に装着できる。
しかしながら、このような蓋２２とガスケツト
４２とが一体化されたものをキヤツピングマシー
ンによつて瓶口部に装着すると、キヤツピング不
良が多い問題が生じた。
本考案者らがこの問題を調査したところ、この
キヤツピング不良の原因はキヤツプリリース工程
でガスケツト４２の筒部２４が瓶口部にうまく入
らないためであることが判明した。
即ち、周知のキヤツピングマシーンには、第８
図に示すような、キヤツプリリース機構４３が設
けられており、ここに斜めに保持された蓋２２が
移動する瓶４４の口部に引つ掛けられて瓶４４の
口部に被せられるようになつている。ところが、
前記ガスケツト４２が蓋２２内に取り付けられて
いると、ガスケツト４２が瓶口部の上端面に乗つ
てしまい、蓋２２が瓶口部に十分深く被さらない
場合がある。これが前記キヤツピング不良の原因
であつた。
この問題を解決するために、本考案者らは、先
に実願昭60−98981号（実開昭62−6252号公報）
により、第１図に示す構造を有するポアリツプキ
ヤツプを提案した際に、中栓部材２の下部に一つ
の工夫を施した。
先に提案したポアリツプキヤツプ（以下、単に
キヤツプと略称する。）は、円筒状の筒部１ａお
よびこの筒部１ａの上部開口を閉じる頂板部１ｂ
からなる金属製のキヤツプシエル１と、このキヤ
ツプシエル１内に収められ上記キヤツプシエル１
が装着される容器の口部に嵌め合わされてその容
器の注ぎ口を形成する合成樹脂製の中栓部材２と
からなるものである。上記キヤツプシエル１の筒
部１ａには、頂板部１ｂから若干間隔をもち、か
つ周方向に沿つて筒部１ａの半径方向内方に突出
するグルーブ１ｃが形成されている。中栓部材２
は、容器口部内に嵌め込まれる上下開口する筒状
の嵌入部７と、この嵌入部７の上端縁に半径方向
外方に向けて延設されたフランジ部６と、このフ
ランジ部６の外周に若干離間して設けられると共
に上記キヤツプシエル１の筒部１ａの上部に内接
する外径を有するリング部４と、このリング部４
と上記フランジ部６を連結する切り離し容易なブ
リツジ部５とで形成されている。
この先に提案したポアリツプキヤツプにおい
て、本考案者らがキヤツピング性を改善するため
に行つた工夫は、中栓部材２の嵌入部７の下部に
小径の筒状第２周部１１を設けた点である。
このように小径の筒状第２周部１１を設ける
と、キヤツピングマシーンのキヤツプリリース機
構によりこのポアリツプキヤツプを瓶口部に被せ
たとき、この第２周部１１が瓶の口部の内側に速
やかに入るので、前記ガスケツト４２の場合のよ
うなキヤツピング不良を解消できる。
Conventionally, the one described in Japanese Utility Model Publication No. 34-5893 is known. This publication describes a cylindrical lid 22 having a ceiling 20 and a peripheral wall 21, as shown in FIG. There is. The insertion material 27 is made of polyethylene or a similar material, and its cylindrical portion 24 is elastically inserted into the mouth 29 of the bottle 28, and the brim 25 is brought into contact with the inner peripheral surface of the mouth 29 of the bottle 28. This can prevent the liquid inside the bottle 28 from flowing down along the outside of the bottle 28. By the way, there was a complaint that the insert 27 described in the above-mentioned publication had to be attached separately from the lid 22 when it was attached to the mouth of the bottle. Therefore, the present inventor proposed in Japanese Utility Model Application Publication No. 57-186357 a cap gasket which has a similar function and can be attached to the bottle mouth together with the lid 22. As shown in FIG. 6, this gasket 42 is
An annular member 41 is provided outside the flange 25 via a bridge 40. In this gasket 42, as shown in FIG. 7, the annular member 41 of the gasket 42 is fitted inside the lid 22, and the lid 2
It can be attached to the mouth of the bottle while integrated with 2. However, when such an integrated lid 22 and gasket 42 is attached to the mouth of the bottle using a capping machine, a problem arises in that there are many capping defects. The inventors of the present invention investigated this problem and found that the cause of the capping failure was that the cylindrical portion 24 of the gasket 42 did not fit properly into the bottle opening during the cap release process. That is, the well-known capping machine includes an eighth capping machine.
As shown in the figure, a cap release mechanism 43 is provided, in which the lid 22 held diagonally is hooked onto the mouth of the moving bottle 44 and placed over the mouth of the bottle 44. ing. However,
If the gasket 42 is installed inside the lid 22, the gasket 42 may rest on the upper end surface of the bottle mouth, and the lid 22 may not cover the bottle mouth deeply enough. This was the cause of the capping failure. In order to solve this problem, the present inventors first published Utility Model Application No. 60-98981 (Utility Model Application No. 62-6252).
Therefore, when we proposed a pore lip cap having the structure shown in FIG. 1, we added one innovation to the lower part of the inner plug member 2. The previously proposed pore lip cap (hereinafter simply referred to as cap) has a cylindrical tube portion 1a and a top plate portion 1b that closes the upper opening of the tube portion 1a.
A metal cap 1 made of
The inner stopper member 2 is made of synthetic resin and is fitted into the mouth of the container to form the spout of the container. A groove 1c is formed in the cylindrical portion 1a of the cap shell 1 at a slight distance from the top plate portion 1b and protrudes inward in the radial direction of the cylindrical portion 1a along the circumferential direction. Inner plug member 2
, a cylindrical fitting part 7 which is fitted into the container mouth and has a vertical opening, a flange part 6 extending radially outward on the upper edge of this fitting part 7, and a flange part 6 on the outer periphery of the flange part 6. a ring part 4 which is provided slightly apart and has an outer diameter inscribed in the upper part of the cylindrical part 1a of the cap shell 1;
and a bridge portion 5 that connects the flange portion 6 and is easily separated. In the previously proposed pore lip cap, the present inventors have devised a device to improve capping performance by providing a small-diameter cylindrical second circumferential portion 11 at the bottom of the insertion portion 7 of the inner plug member 2. It is a point. By providing the small-diameter cylindrical second circumferential portion 11 in this way, when this pour cap is placed over the bottle mouth by the cap release mechanism of the capping machine, this second circumferential portion 11 will close to the bottle mouth. Since it quickly enters the inside of the gasket 42, it is possible to eliminate capping defects as in the case of the gasket 42 described above.
ところがこのポアリツプキヤツプにおいては、
次のような解決すべき課題が生じた。
キヤツプの中栓部材２は、合成樹脂で形成さ
れており一般に射出成形法で製造されるが、こ
の中栓部材２を射出成形する際には、嵌入部７
が金型から円滑に脱型されるように、かつまた
突き出し跡が目立たないように嵌入部７の下端
面をエジエクトして脱型せざるを得ない。
ところがこのポアリツプキヤツプではキヤツ
プを容器に装着する際の作業性等を考慮して、
中栓部材２の下部に縮径された第２周部を設け
たので、エジエクトしたとき嵌入部７が座屈し
易く、中栓部材２を脱型できない事故が起き易
い。
またこのポアリツプキヤツプを組みたてるた
めにキヤツプシエル１に中栓部材をはめ込む
際、中栓部材２の下端を押すと、中栓部材２の
嵌入部７が座屈して、中栓部材２をしつかりと
はめ込むことができないトラブルが発生するこ
とがあつた。
本考案は前記課題を解決するためになされたも
ので、実願昭60−98981号で提案したポアリツプ
キヤツプを構成する中栓部材の成形性を改善する
こと、およびキヤツプシエル内への中栓部材装着
作業の作業性を改善することを目的とする。
However, with this pore lip cap, the following issues arose that needed to be resolved. The inner plug member 2 of the cap is made of synthetic resin and is generally manufactured by injection molding.
It is necessary to eject the lower end surface of the fitting part 7 so that it can be smoothly removed from the mold, and so that the ejection marks are not noticeable. However, with this pore lip cap, in consideration of workability when attaching the cap to the container,
Since the second peripheral portion having a reduced diameter is provided at the lower part of the inner plug member 2, the fitting portion 7 is likely to buckle when ejected, and an accident in which the inner plug member 2 cannot be removed from the mold is likely to occur. Also, when fitting the inner plug member into the cap shell 1 to assemble this pour cap, if the lower end of the inner plug member 2 is pushed, the fitting part 7 of the inner plug member 2 will buckle, causing the inner plug member to There have been cases where problems have arisen in which it has not been possible to fit it firmly. The present invention was made in order to solve the above-mentioned problems, and aims to improve the moldability of the inner plug member that constitutes the pore lip cap proposed in Utility Application No. 60-98981, and to The purpose is to improve the workability of plug member attachment work.
本考案のポアリツプキヤツプは、
金属製のキヤツプシエルと、このキヤツプシエ
ル内に収められキヤツプシエルを取り付ける容器
の注ぎ口を形成する合成樹脂製の中栓部材とから
なり、
前記キヤツプシエルが、頂板部と筒部とを有
し、筒部の上部側に内側に突出するグルーブが形
成されたものであり、
前記中栓部材が、容器口部内に嵌め込まれる上
下開口した筒状の嵌入部と、この嵌入部の上端縁
に嵌入部の半径方向外方に向けて延設されたフラ
ンジ部と、このフランジ部の外周に若干離間して
設けられると共に上記キヤツプ本体の筒部の上部
に内接する外径を有するリング部と、このリング
部と上記フランジ部を連結する切り離し容易なブ
リツジとで形成されたポアリツプキヤツプにおい
て、
上記中栓部材の嵌入部の上部側が筒状の第１周
部とされ、この第１周部の下側に下斜め内側へ漸
次縮径するテーパ部を介して第１周部より小径の
筒状第２周部が形成されると共に、
上記第１周部の外径Ａ、内径Ｂおよび第２周部
の外径Ｃの寸法関係が次式
Ｂ＜Ｃ＜Ａ
で設定されていることを特徴とするポアリツプキ
ヤツプである。
The pour cap of the present invention consists of a metal cap shell and a synthetic resin inner cap member that is housed within the cap shell and forms a spout of a container to which the cap shell is attached, and the cap shell has the following features: It has a top plate part and a cylindrical part, and a groove protruding inward is formed on the upper side of the cylindrical part, and the inner plug member has a vertically opened cylindrical fitting part that is fitted into the container mouth part. , a flange part extending radially outward of the fitting part on the upper edge of the fitting part, and a flange part provided on the outer periphery of the flange part at a slight distance from the other part, and inscribed in the upper part of the cylindrical part of the cap main body. In the pore lip cap formed of a ring portion having an outer diameter and an easily separable bridge connecting the ring portion and the flange portion, the upper side of the insertion portion of the inner plug member is a cylindrical first peripheral portion. A cylindrical second circumferential portion having a diameter smaller than that of the first circumferential portion is formed below the first circumferential portion through a tapered portion whose diameter gradually decreases diagonally downward and inward, and This is a pore lip cap characterized in that the dimensional relationship among the outer diameter A, the inner diameter B, and the outer diameter C of the second peripheral portion is set by the following formula: B<C<A.
第２周部の外径Ｃが第１周部の外径Ａ以上にな
ると、中栓部材の嵌入部が容器の口部内に入りに
くくなり、第２周部を設けた意味がなくなる。
また第２周部の外径Ｃが第１周部の内径Ｂ以下
になると、第１周部と第２周部との径方向の重な
りがなくなるので、後述する本考案の作用効果が
得られない。
本考案のポアリツプキヤツプにおいては、第２
周部の外径を前述のように第１周部の外径および
内径との関係において所定の範囲に定めたので、
第１周部と第２周部とは径方向で部分的に重な
る。従つてこの中栓部材を射出成形し脱型する時
に中栓部材の下端をエジエクトすると、その力が
中栓部材の上端まで伝わり、中栓部材の座屈が防
止される。
また本考案のポアリツプキヤツプを組み立てる
ためにキヤツプシエルに中栓部材をはめ込む際に
は、中栓部材を押し込む力が中栓部材の上端まで
伝わるので、嵌入部の第１周部と第２周部との間
で座屈するのを防止できる。
When the outer diameter C of the second circumferential portion becomes greater than the outer diameter A of the first circumferential portion, it becomes difficult for the fitting portion of the inner plug member to enter the mouth of the container, and there is no point in providing the second circumferential portion. Further, when the outer diameter C of the second circumferential portion becomes equal to or less than the inner diameter B of the first circumferential portion, there is no overlap in the radial direction between the first circumferential portion and the second circumferential portion, so that the effects of the present invention described later can be obtained. do not have. In the pore lip cap of the present invention, the second
Since the outer diameter of the circumferential portion was set within a predetermined range in relation to the outer diameter and inner diameter of the first circumferential portion as described above,
The first circumferential portion and the second circumferential portion partially overlap in the radial direction. Therefore, when the lower end of the inner plug member is ejected when the inner plug member is injection molded and demolded, the force is transmitted to the upper end of the inner plug member, thereby preventing buckling of the inner plug member. Furthermore, when fitting the inner plug member into the cap shell to assemble the pour cap of the present invention, the force for pushing the inner plug member is transmitted to the upper end of the inner plug member. This can prevent buckling with the surrounding parts.
以下、図面を参照してこの考案のキヤツプを詳
しく説明する。
第１図〜第４図は、この考案によるキヤツプＫ
を示すもので、このキヤツプＫは、概略キヤツプ
シエル１と中栓部材２とからなるものである。こ
のキヤツプシエル１はアルミニウム等の金属板か
らなるものであつて、このものは円筒状の筒部１
ａと、この筒部１ａの上部開口を閉じる頂板部１
ｂとからなるものである。筒部１ａの上端部分に
は、頂板部１ｂと若干間隔をもち、周方向に沿つ
て筒部１ａの半径方向内方に突出するグルーブ１
ｃが形成されている。また、筒部１ａの下端縁に
はブリツジ１ｄを介してピルフアープルーフバン
ド１ｅが設けられている。
このキヤツプシエル１の頂板部１ｂの内面側に
は、ライナー３が設けられている。このライナー
３は後述する中栓部材２のフランジ部６の上部周
面に当接して容器口部を密閉するものである。こ
のライナー３は、塩化ビニールシート、ポリエチ
レンシート等のライナー素材を貼着することによ
り、あるいはポリエチレン等のインシエルモール
ド成形する等の方法により形成されている。
ライナー３が設けられたキヤツプシエル１に
は、中栓部材２が収められている。中栓部材２
は、第３図に示すようにポリエチレン、ポリプロ
ピレンなどの熱可塑性を有する樹脂を材料として
射出成形法などにより一体形成したしたもので、
このものは、リング部４とブリツジ部５とフラン
ジ部６と嵌入部７とからなるものである。
リング部４は、キヤツプシエル１のグルーブ１
ｃとライナー３との間において、筒部１ａに内接
する環状の部材であつて、このものの外径は、筒
部１ａの内接する部分とほぼ等しく設定され、キ
ヤツプシエル１のグルーブ１ｃの内径よりも大き
く設定されている。また、このリング部４の内径
は、後述するフランジ部６の外径よりも若干大き
く設定されている。
リング部４の下端部には、リング部４の半径方
向内方に複数の小片状のブリツジ部５……が設け
られ、これらのブリツジ部５……には、キヤツプ
Ｋが装着される容器の注ぎ口を形成するフランジ
部６が連設されている。このフランジ部６は、環
状の部材であつて、このものの外径は、容器口部
の上端部の外径とほぼ等しく、かつ上記リング部
４の内径よりも若干小さく形成されている。この
フランジ部６の上部周面には、第２図に示すよう
に、まず、フランジ部６とブリツジ部５……との
境界からフランジ部６の半径方向内方に向つて漸
次真っ直ぐ緩く上昇する傾斜面部６ａが形成さ
れ、続いてこの傾斜面部６ａの上端に滑らかな曲
面状にフランジ部６の内面まで下向する曲面部６
ｂが形成されている。また、フランジ部６の外周
の下面側には、全周にわたつて内容物を注ぎ出し
た際の液切れを良くする切り欠き部６ｃが形成さ
れている。
このフランジ６の下端部には、嵌入部７が形成
されている。この嵌入部７は、略円筒体であつ
て、このものはキヤツプＫが装着される容器口部
に嵌め込まれ、中栓部材２を容器口部に固定せし
めるものである。この嵌入部７の上部は筒状の第
１周部９とされており、この外周面には全周にわ
たつて４条の抜け止め用の凸状８……が設けられ
ている。この第１周部９の下側には、第１周部９
の半径方向内方に漸次縮径するテーパ部１０が形
成され、このテーパ部１０の下側には、第１周部
９より小径の筒状の第２周部１１が形成されてい
る。ここで、第１周部９、テーパ部１０および第
２周部１１の各部位は、それぞれ軸線を同一とし
ており、第１周部９の外径Ａ、内径Ｂおよび第２
周部１１の外径Ｃの寸法関係は、射出成形時に第
２周部１１、テーパ部１０および第１周部９の近
傍部分が内側に座屈しない条件などにより決めら
れ、具体的には、次式
Ｂ＜Ｃ＜Ａ ……（１）
で設定される。第２周部１１の外径Ｃが第１周部
９の外径Ａより大きいものでは、中栓部材２の嵌
入部７が容器の口部内に嵌合されにくくなる不都
合が生じる。また、第２周部１１の外径Ｃが第１
周部９の内径Ｂより小さいものでは、この中栓部
材２を射出成形金型から脱型するためにエジエク
トした時にテーパ部１０を含む第２周部１１と第
１周部９との間が内側に座屈し易くなり、脱型時
に嵌入部７の下端をエジエクトしても中栓部材２
の脱型が極めて困難になる不都合が生じる。また
中栓部材２をキヤツプシエル１内にはめ込む際に
嵌入部７が座屈するトラブルも発生し易くなる。
さらに、第２周部１１の外径Ｃは、第１周部９
の外径Ａと内径Ｂとの和の二分の一にほぼ等しい
ことが望ましい。また上記テーパ部１０の第１周
部９に対する傾斜角度θは、上記（１）式で示さ
れる第１周部９の外径Ａ、内径Ｂおよび第２周部
１１の外径Ｃの寸法関係またはテーパ部１０の傾
斜面の長さ寸法などにより決められるが、通常５
〜60度程度の範囲とされ、好ましくは20〜45度程
度の範囲とされる。
中栓部材２の第２周部１１の下端部内側には、
ボトム部１２が形成されている。このボトム部１
２は、中栓部材２の半径方向の中心に設けられた
傘状の中心部１２ａと、そこから同じ傾斜で放射
状に延び、嵌入部７の下端部にひろがる３本の板
部１２ｂ……とから形成されている。
このように形成された中栓部材２は、そのリン
グ部がキヤツプシエル１のグルーブ１ｃとライナ
ー３との間に嵌め合わされることによりキヤツプ
シエル１に脱落しないように収容されている。
次に上記の構成からなるキヤツプＫ中栓部材２
の形成方法、キヤツプＫの組み立て方法および使
用方法について説明する。まず、例えばポリエチ
レンなどの熱可塑性を有する樹脂材料を図示しな
い射出成形装置内で樹脂材料の種類に応じた成形
温度まで加温し、かつ離型剤などを内面に塗布し
た成形金型内に高圧充填する。次に、この成形金
型を冷却して内部の樹脂材料を固化された後、図
示しない成形品取り出し装置などを用いて所定の
形状に成形された中栓部材２を取り出す。この
際、中栓部材２が、中栓部材２の外面側を形成す
る可動金型に取り付いた状態で型開きが行なわ
れ、ついで金型の突き出し機構によつて第２周部
１１の下端が中栓部材２の軸栓方向に沿つて上方
（第２図中Ｓ方向）にエジエクトされ、これによ
り中栓部材２が脱型される。このポアリツプキヤ
ツプでは、第２周部１１の外径が前記の範囲に設
定されているので、第２周部１１、テーパ部１０
および第１周部９の部分は座屈することなく、成
形金型から容易に離間する。
次に、キヤツプシエル１の頂板部１ｂ上にイン
シエルモールド装置などを用いてライナー３を設
け、このキヤツプシエル１の内部に上記の成形方
法により得られた中栓部材２を嵌着するようにし
てキヤツプＫを組み立てる。この際、中栓部材２
の下端を押してキヤツプシエル１に押し込む。す
ると中栓部材２のリング部４がキヤツプシエル１
のグルーブ１ｃに当接した後、これを乗り越える
ようにしてグルーブ１ｃとライナー３との間に嵌
め込まれる。
このようにして組み立てられたキヤツプＫは、
例えば瓶詰製品の製造工程でまず前記キヤツプリ
ース機構４３からキヤツピング対象となる瓶など
の容器口部１３に被せられる。この際、キヤツプ
Ｋの中栓部材２の下端部には小径の第２周部１１
が設けられているので、容器口部１３に嵌まり易
くなつている。次に、この中栓部材２の嵌入部７
は、キヤツピングマシン１４のプレツシヤーブロ
ツク１４ａによつて容器口部１３に圧入され、こ
れとほぼ同時に、キヤツプＫの筒部１ａには、ね
じ切りロール１４ｂによつてねじが転造されて巻
き締められる。この際、プレツシヤブロツク１４
ａの圧力によりリング部４がリング部４の軸線方
向下方に変位し、この変位に伴つてブリツジ部５
……が相対的に上に動いて切断されるとともに、
フランジ部６の上端部がライナー３に当接され
る。このキヤツプＫを圧入するプレツシヤーブロ
ツク１４ａの周縁部分には、中栓部材２のフラン
ジ部上面６ａの傾斜面部６ｃとほぼ平行なテーパ
面１４ｃが形成されており、これによりキヤツプ
Ｋは正しい角度に導かれて容器口部１３に正確に
圧入される。
次に、容器から内容物を注ぎ出すためにキヤツ
プＫを取り外すと、第４図に示すように中栓部材
２の嵌入部７およびフランジ部６が容器口部１３
に残留し、キヤツプシエル１がこのキヤツプシエ
ル１の内部に残留したリング部４とともに取り外
される。この状態で容器を傾けると内容物は、中
栓部材２の嵌入部７の内からフランジ部６の上面
を介して注ぎ出される。そして内容物の注出が終
了して容器を起立させると内容物は、中栓部材２
のフランジ部６の切り欠き部６ｄにより液だれす
ることなく容器内に戻される。
上記の実施例では、中栓部材２のフランジ部６
の外周縁部に切り欠き部６ｄを設けたことによ
り、容器口部１３の内容物の液だれを防止するこ
とができる。
以上説明したように、この実施例のポアリツプ
キヤツプでは、上下開口する筒状の嵌入部７の下
端部に第１周部９より小径の筒状第２周部１１が
連設された中栓部材２の、上記第１周部９の外径
Ａ、内径Ｂおよび第２周部１１の外径Ｃの寸法関
係を、Ｂ＜Ｃ＜Ａとなるように設定したので、第
１周部９と第２周部１１とは径方向で部分的に重
なる。従つて本実施例のポアリツプキヤツプの中
栓部材２を射出成形し脱型する時に中栓部材２の
下端をエジエクトすると、その力が中栓部材２の
上端まで伝わる。よつて本考案のキヤツプによれ
ば、成形時の中栓部材２の座屈を防止することが
でき、中栓部材２の成形性を改善できる。
また本実施例のポアリツプキヤツプを組み立て
るためにキヤツプシエル１に中栓部材２をはめ込
む際には、中栓部材２を押し込む力が中栓部材２
の上端まで伝わるので、嵌入部７の第１周部９と
第２周部１１との間で座屈するのを防止できる。
よつて本実施例のポアリツプキヤツプによれば、
キヤツプシエル１へ中栓部材２を装着する作業の
作業性を改善することができる。
The cap of this invention will be explained in detail below with reference to the drawings. Figures 1 to 4 show the cap K according to this invention.
This cap K generally consists of a cap shell 1 and an inner plug member 2. This cap shell 1 is made of a metal plate such as aluminum, and has a cylindrical portion 1.
a, and a top plate part 1 that closes the upper opening of this cylindrical part 1a.
It consists of b. A groove 1 is provided at the upper end portion of the cylindrical portion 1a, having a slight distance from the top plate portion 1b, and protruding inward in the radial direction of the cylindrical portion 1a along the circumferential direction.
c is formed. Further, a pilfer-proof band 1e is provided on the lower edge of the cylindrical portion 1a via a bridge 1d. A liner 3 is provided on the inner surface of the top plate portion 1b of the cap shell 1. This liner 3 contacts the upper circumferential surface of a flange portion 6 of an inner plug member 2, which will be described later, to seal the mouth of the container. The liner 3 is formed by pasting a liner material such as a vinyl chloride sheet or a polyethylene sheet, or by in-shell molding of polyethylene or the like. A cap shell 1 provided with a liner 3 houses an inner plug member 2. Inner plug member 2
As shown in Figure 3, it is integrally formed using thermoplastic resin such as polyethylene or polypropylene by injection molding.
This one consists of a ring part 4, a bridge part 5, a flange part 6, and a fitting part 7. The ring portion 4 is connected to the groove 1 of the cap shell 1.
c and the liner 3, an annular member inscribed in the cylindrical portion 1a, the outer diameter of which is set approximately equal to the inscribed portion of the cylindrical portion 1a, and larger than the inner diameter of the groove 1c of the cap shell 1. is also set large. Further, the inner diameter of this ring portion 4 is set to be slightly larger than the outer diameter of a flange portion 6, which will be described later. A plurality of small piece-like bridge parts 5 are provided at the lower end of the ring part 4 inwardly in the radial direction of the ring part 4, and these bridge parts 5 are provided with a container to which a cap K is attached. A flange portion 6 forming a pouring spout is continuously provided. The flange portion 6 is an annular member, and its outer diameter is approximately equal to the outer diameter of the upper end of the container opening, and is slightly smaller than the inner diameter of the ring portion 4. As shown in FIG. 2, the upper circumferential surface of the flange portion 6 gradually rises straightly and gently inward from the boundary between the flange portion 6 and the bridge portion 5 in the radial direction of the flange portion 6. A sloped surface portion 6a is formed, and then a curved surface portion 6 that extends downward to the inner surface of the flange portion 6 in a smooth curved shape is formed at the upper end of the sloped surface portion 6a.
b is formed. Further, a cutout portion 6c is formed on the lower surface side of the outer periphery of the flange portion 6 to facilitate draining of the liquid when pouring out the contents over the entire circumference. A fitting portion 7 is formed at the lower end of the flange 6 . This fitting part 7 is a substantially cylindrical body, and is fitted into the mouth of the container to which the cap K is attached, thereby fixing the inner plug member 2 to the mouth of the container. The upper part of the fitting part 7 is a cylindrical first circumferential part 9, and the outer circumferential surface thereof is provided with four protrusions 8 for preventing slipping off over the entire circumference. On the lower side of this first circumferential portion 9, a first circumferential portion 9 is provided.
A tapered portion 10 whose diameter gradually decreases inward in the radial direction is formed, and a cylindrical second circumferential portion 11 having a smaller diameter than the first circumferential portion 9 is formed below this tapered portion 10 . Here, each part of the first peripheral part 9, the tapered part 10, and the second peripheral part 11 has the same axis, and the outer diameter A, the inner diameter B of the first peripheral part 9, and the second peripheral part 9 have the same axis.
The dimensional relationship of the outer diameter C of the peripheral part 11 is determined by the condition that the second peripheral part 11, the tapered part 10, and the vicinity of the first peripheral part 9 do not buckle inward during injection molding, and specifically, It is set by the following formula: B<C<A (1). If the outer diameter C of the second circumferential portion 11 is larger than the outer diameter A of the first circumferential portion 9, a problem arises in that the fitting portion 7 of the inner plug member 2 is difficult to fit into the mouth of the container. Further, the outer diameter C of the second circumferential portion 11 is
If the diameter is smaller than the inner diameter B of the circumferential portion 9, when the inner plug member 2 is ejected from the injection mold, there will be a gap between the second circumferential portion 11 including the tapered portion 10 and the first circumferential portion 9. It becomes easy to buckle inward, and even if the lower end of the insertion part 7 is ejected during demolding, the inner plug member 2
This causes the inconvenience that demolding is extremely difficult. Further, when the inner plug member 2 is fitted into the cap shell 1, the fitting portion 7 is likely to buckle. Furthermore, the outer diameter C of the second circumferential portion 11 is the same as that of the first circumferential portion 9.
It is desirable that the diameter be approximately equal to one half of the sum of the outer diameter A and the inner diameter B. Further, the inclination angle θ of the tapered portion 10 with respect to the first circumferential portion 9 is determined by the dimensional relationship between the outer diameter A, the inner diameter B of the first circumferential portion 9, and the outer diameter C of the second circumferential portion 11, as shown by the above equation (1). Or, it is determined by the length of the inclined surface of the tapered part 10, etc., but usually 5
The range is approximately 60 degrees, preferably 20 to 45 degrees. Inside the lower end of the second peripheral portion 11 of the inner plug member 2,
A bottom portion 12 is formed. This bottom part 1
2 includes an umbrella-shaped central portion 12a provided at the radial center of the inner plug member 2, and three plate portions 12b extending radially from there at the same inclination and extending to the lower end of the insertion portion 7. It is formed from. The inner plug member 2 formed in this manner is housed in the cap shell 1 so that its ring portion is fitted between the groove 1c of the cap shell 1 and the liner 3 so that it does not fall off. Next, the cap K inner plug member 2 having the above structure is
The method of forming the cap K, the method of assembling the cap K, and the method of using it will be explained. First, a thermoplastic resin material such as polyethylene is heated to a molding temperature appropriate for the type of resin material in an injection molding device (not shown), and then placed under high pressure in a mold with a mold release agent coated on the inner surface. Fill. Next, after this molding die is cooled to solidify the resin material inside, the inner plug member 2 molded into a predetermined shape is taken out using a molded product taking out device (not shown) or the like. At this time, the mold is opened with the inner plug member 2 attached to the movable mold forming the outer surface of the inner plug member 2, and then the lower end of the second circumferential portion 11 is opened by the ejecting mechanism of the mold. The inner plug member 2 is ejected upward (direction S in FIG. 2) along the axial plug direction, and the inner plug member 2 is thereby demolded. In this bore lip cap, since the outer diameter of the second circumferential portion 11 is set within the above range, the second circumferential portion 11, the tapered portion 10
The first circumferential portion 9 is easily separated from the molding die without buckling. Next, a liner 3 is provided on the top plate portion 1b of the cap shell 1 using an in-shell molding device, and the inner plug member 2 obtained by the above molding method is fitted inside the cap shell 1. Assemble cap K. At this time, the inner plug member 2
Press the bottom edge of and push it into cap shell 1. Then, the ring part 4 of the inner plug member 2 is attached to the cap shell 1.
After contacting the groove 1c, the liner 3 is fitted between the groove 1c and the liner 3 so as to overcome this. Cap K assembled in this way is
For example, in the manufacturing process of a bottled product, the cap is first placed on the mouth part 13 of a container such as a bottle to be capped from the cap weathing mechanism 43. At this time, the lower end of the inner plug member 2 of the cap K has a second circumferential portion 11 with a small diameter.
is provided, so that it can be easily fitted into the container opening 13. Next, the insertion part 7 of this inner plug member 2
is press-fitted into the container opening 13 by the pressure block 14a of the capping machine 14, and at the same time, a thread is rolled into the cylindrical portion 1a of the cap K by the thread cutting roll 14b. It is wrapped tightly. At this time, the pressure block 14
The ring part 4 is displaced downward in the axial direction of the ring part 4 due to the pressure a, and with this displacement, the bridge part 5
... moves relatively upward and is cut off,
The upper end of the flange portion 6 is brought into contact with the liner 3. A tapered surface 14c is formed on the peripheral edge of the pressure block 14a into which the cap K is press-fitted, and is approximately parallel to the sloped surface 6c of the upper surface 6a of the flange portion of the inner plug member 2, so that the cap K can be pressed at the correct angle. and is accurately press-fitted into the container opening 13. Next, when the cap K is removed in order to pour out the contents from the container, the fitting part 7 and flange part 6 of the inner plug member 2 are inserted into the container mouth part 13 as shown in FIG.
The cap shell 1 is removed together with the ring portion 4 remaining inside the cap shell 1. When the container is tilted in this state, the contents are poured out from inside the fitting part 7 of the inner plug member 2 through the upper surface of the flange part 6. When the container is stood up after dispensing the contents, the contents are transferred to the inner plug member 2.
The notch 6d of the flange 6 allows the liquid to be returned into the container without dripping. In the above embodiment, the flange portion 6 of the inner plug member 2
By providing the notch 6d on the outer peripheral edge of the container, dripping of the contents of the container opening 13 can be prevented. As explained above, in the pore lip cap of this embodiment, a cylindrical second circumferential portion 11 having a smaller diameter than the first circumferential portion 9 is connected to the lower end of the cylindrical fitting portion 7 that opens upwardly and downwardly. Since the dimensional relationship between the outer diameter A and inner diameter B of the first circumferential portion 9 and the outer diameter C of the second circumferential portion 11 of the plug member 2 is set so that B<C<A, the first circumferential portion 9 and the second peripheral portion 11 partially overlap in the radial direction. Therefore, when the lower end of the inner plug member 2 of the pore lip cap of this embodiment is injection molded and demolded, the force is transmitted to the upper end of the inner plug member 2. Therefore, according to the cap of the present invention, buckling of the inner plug member 2 during molding can be prevented, and the moldability of the inner plug member 2 can be improved. Furthermore, when fitting the inner plug member 2 into the cap shell 1 in order to assemble the pore lip cap of this embodiment, the force for pushing the inner plug member 2 is applied to the inner plug member 2.
Since it is transmitted to the upper end of the fitting portion 7, buckling between the first circumferential portion 9 and the second circumferential portion 11 of the fitting portion 7 can be prevented.
Therefore, according to the pore lip cap of this embodiment,
The workability of attaching the inner plug member 2 to the cap shell 1 can be improved.
以上説明したように本考案では、上下開口する
筒状の嵌入部の下端部にテーパ部を介して第１周
部より小径の筒状第２周部が連設された中栓部材
の、上記第１周部の外径Ａ，内径Ｂおよび第２周
部の外径Ｃの寸法関係を、Ｂ＜Ｃ＜Ａとなるよう
に設定したので、第１周部と第２周部とは径方向
で部分的に重なる。従つて本考案の中栓部材を射
出成形し脱型する時に中栓部材の下端をエジエク
トすると、その力が中栓部材の上端まで伝わる。
よつて本考案のキヤツプによれば、成形時の中栓
部材の座屈を防止することができ、中栓部材の成
形性を改善できる。
また本考案のポアリツプキヤツプを組み立てる
ためにキヤツプシエルに中栓部材をはめ込む際に
は、中栓部材を押し込む力が中栓部材の上端まで
伝わるので、嵌入部の第１周部と第２周部との間
で座屈するのを防止できる。よつて本考案のポア
リツプキヤツプによれば、キヤツプシエルへの中
栓部材装着作業の作業性を改善することができ
る。
As explained above, in the present invention, the inner plug member has a cylindrical second circumferential portion having a smaller diameter than the first circumferential portion, which is connected to the lower end of the cylindrical fitting portion opening upwardly and downwardly through the tapered portion. Since the dimensional relationship between the outer diameter A and inner diameter B of the first circumferential portion and the outer diameter C of the second circumferential portion is set so that B<C<A, the first circumferential portion and the second circumferential portion are partially overlap in direction. Therefore, when the lower end of the inner plug member of the present invention is injection molded and demolded, the force is transmitted to the upper end of the inner plug member.
Therefore, according to the cap of the present invention, buckling of the inner plug member during molding can be prevented, and the moldability of the inner plug member can be improved. Furthermore, when fitting the inner plug member into the cap shell to assemble the pour cap of the present invention, the force for pushing the inner plug member is transmitted to the upper end of the inner plug member. This can prevent buckling with the surrounding parts. Therefore, according to the pore lip cap of the present invention, the workability of attaching the inner plug member to the cap shell can be improved.
第１図ないし第４図はこの考案の対象となるポ
アリツプキヤツプの一例を示し、第１図は一部断
面視した正面図、第２図は同例の中栓部材の要部
拡大断面図、第３図は同例のキヤツプを容器口部
に装着した状態を示す一部断面視した正面図、第
４図は同キヤツプを開封した状態を示す一部断面
視した正面図、第５図は従来例の断面図、第６図
は本考案者らが先に提案したキヤツプ用ガスケツ
トを示す断面図、第７図は同ガスケツトを蓋に取
り付けて瓶口部に装着した状態を示す断面図、第
８図は周知のキヤツピング装置に設けられている
キヤツプリリース機構を示す正面図である。
Ｋ……キヤツプ（ポアリツプキヤツプ）、１…
…キヤツプシエル、１ａ……筒部、１ｂ……頂板
部、１ｃ……グルーブ、２……中栓部材、４……
リング部、５……ブリツジ部、７……嵌入部、９
……第１周部、Ａ……第１周部の外径、Ｂ……第
２周部の内径、１０……テーパ部、１１……第２
周部、Ｃ……第２周部の外径。
Figures 1 to 4 show an example of the pore lip cap to which this invention is applied, with Figure 1 being a partially sectional front view and Figure 2 being an enlarged cross-section of the main part of the inner plug member of the same example. Figure 3 is a partially sectional front view showing the cap of the same example attached to the container opening, Fig. 4 is a partially sectional front view showing the same cap opened, and Fig. 5 The figure is a cross-sectional view of a conventional example, Figure 6 is a cross-sectional view of a cap gasket previously proposed by the present inventors, and Figure 7 is a cross-sectional view of the gasket attached to the lid and attached to the mouth of the bottle. 8 are front views showing a cap release mechanism provided in a known capping device. K...cap (pore lip cap), 1...
... Cap shell, 1a ... Cylinder part, 1b ... Top plate part, 1c ... Groove, 2 ... Inner plug member, 4 ...
Ring part, 5... Bridge part, 7... Fitting part, 9
...First circumferential portion, A...Outer diameter of first circumferential portion, B...Inner diameter of second circumferential portion, 10...Tapered portion, 11...Second
Peripheral part, C...outer diameter of the second peripheral part.
Claims (1)
に収められキヤツプシエルを取り付ける容器の注
ぎ口を形成する合成樹脂製の中栓部材とからな
り、 前記キヤツプシエルが頂板部と筒部とを有し、
筒部の上部側に内側に突出するグルーブが形成さ
れたものであり、 前記中栓部材が、容器口部内に嵌め込まれる上
下開口した筒状の嵌入部と、この嵌入部の上端縁
に嵌入部の半径方向外方に向けて延設されたフラ
ンジ部と、このフランジ部の外周に若干離間して
設けられると共に上記キヤツプ本体の筒部の上部
に内接する外径を有するリング部と、このリング
部と上記フランジ部を連結する切り離し容易なブ
リツジとで形成されたポアリツプキヤツプにおい
て、 上記中栓部材の嵌入部の上部側が筒状の第１周
部とされ、この第１周部の下側に下斜め内側へ漸
次縮径するテーパ部を介して第１周部より小径の
筒状第２周部が形成されると共に、 上記第１周部の外径Ａ、内径Ｂおよび第２周部
の外径Ｃの寸法関係が次式 Ｂ＜Ｃ＜Ａ で設定されていることを特徴とするポアリツプキ
ヤツプ。[Scope of Claim for Utility Model Registration] Consisting of a metal cap shell and a synthetic resin inner stopper member that is housed within the cap shell and forms a spout of a container to which the cap shell is attached, the cap shell being a top plate part and It has a cylindrical part,
A groove protruding inward is formed on the upper side of the cylindrical part, and the inner plug member has a cylindrical fitting part with a vertical opening that is fitted into the container opening, and a fitting part on the upper edge of the fitting part. a flange portion extending radially outward; a ring portion provided on the outer periphery of the flange portion at a slight distance therefrom and having an outer diameter inscribed in the upper portion of the cylindrical portion of the cap body; and an easy-to-separate bridge connecting the flange part, the upper side of the insertion part of the inner plug member is a cylindrical first peripheral part, and the lower part of the first peripheral part is A cylindrical second peripheral part having a smaller diameter than the first peripheral part is formed through a tapered part whose diameter gradually decreases diagonally downward and inward on the side, and the outer diameter A, the inner diameter B of the first peripheral part, and the second peripheral part are formed. A pore lip cap characterized in that the dimensional relationship of the outer diameter C of the portion is set by the following formula: B<C<A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985172473U JPH0454121Y2 (en) | 1985-11-09 | 1985-11-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985172473U JPH0454121Y2 (en) | 1985-11-09 | 1985-11-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6280847U JPS6280847U (en) | 1987-05-23 |
| JPH0454121Y2 true JPH0454121Y2 (en) | 1992-12-18 |
Family
ID=31109038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985172473U Expired JPH0454121Y2 (en) | 1985-11-09 | 1985-11-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454121Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52116445U (en) * | 1976-03-01 | 1977-09-03 | ||
| JPS57186357U (en) * | 1981-05-22 | 1982-11-26 | ||
| JPS58136451U (en) * | 1982-03-11 | 1983-09-13 | 株式会社ヤクルト本社 | Carbonated water bottle sealing device |
-
1985
- 1985-11-09 JP JP1985172473U patent/JPH0454121Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6280847U (en) | 1987-05-23 |
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