JP3656393B2 - Outlet plug mounting device - Google Patents

Outlet plug mounting device Download PDF

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Publication number
JP3656393B2
JP3656393B2 JP05618798A JP5618798A JP3656393B2 JP 3656393 B2 JP3656393 B2 JP 3656393B2 JP 05618798 A JP05618798 A JP 05618798A JP 5618798 A JP5618798 A JP 5618798A JP 3656393 B2 JP3656393 B2 JP 3656393B2
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JP
Japan
Prior art keywords
plug
flange
ultrasonic welding
spout
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.)
Expired - Fee Related
Application number
JP05618798A
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Japanese (ja)
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JPH11235767A (en
Inventor
征記 三好
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.)
Toppan Inc
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Toppan Inc
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Priority to JP05618798A priority Critical patent/JP3656393B2/en
Publication of JPH11235767A publication Critical patent/JPH11235767A/en
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Publication of JP3656393B2 publication Critical patent/JP3656393B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841Holding or clamping means for handling purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841Holding or clamping means for handling purposes
    • B29C65/7847Holding or clamping means for handling purposes using vacuum to hold at least one of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112Single lapped joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • B29C66/53247Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63Internally supporting the article during joining
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832Reciprocating joining or pressing tools
    • B29C66/8322Joining or pressing tools reciprocating along one axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • B29L2031/7162Boxes, cartons, cases
    • B29L2031/7166Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

PROBLEM TO BE SOLVED: To simplify a structure by simply supplying, supporting and positioning a port plug and correctly and precisely conducting it. SOLUTION: In a port plug supporting unit for receiving, holding and conveying a port plug l to a predetermined position of an outer surface of a carton, characteristics of a profile shape of the plug 1 or more specifically characteristics of a molding of a synthetic resin of the plug 1 are elastically deformable at the molding such as a locking protrusion provided at a flange 1C or the plug 1. And hence without saying, the flange 1C largely overhangs radially outward of a port plug body 1A so that a front surface and a rear surface (bottom) have smooth surfaces. Further, it is held by utilizing mainly a vibration horn 6 of an ultrasonic welder by utilizing an easily molding process.

Description

【0001】
【発明の属する技術分野】
本発明は、例えば紙製の、液体や粉類、あるいは米などの穀類を収容する容器の注ぎ口に口栓を取付けるための注出口栓の取付装置、更に詳しくは、口栓を紙製の容器に取り付ける際に、この口栓の供給、支持、位置決めに有効な注出口栓の取付装置に関する。
【0002】
【従来の技術】
従来、この種の容器は、内外面にプラスチックが被覆されることによって防水加工が施された紙製で、折り畳まれ封止された平坦な四角形の底を有した角筒から形成されている。また、この角筒の周壁の上部が切り妻屋根形状に折り畳まれ封止されている。そして、注ぎ口がこの角筒の周壁の上部の切り妻屋根形状領域の一方の傾斜面に形成され、この注ぎ口に対応して口栓が固定されている。この容器には、例えば牛乳、果汁、日本酒、更には醤油などの液体調味料の他、粉類、あるいは米などの穀類が充填される。
【0003】
ところで、このような容器に前記口栓を固定するのには、次のような手順と手段が採用されていた。すなわち、まず前記充填物が先にこの容器に充填され、次いで上端開口が密封される。次に、この密封された容器の壁の外表面の注ぎ口周囲領域が、電気ヒーターから送風されてくる温風により加熱溶融される。引き続き口栓支持部材により支持されている口栓の底も、温風によって加熱溶融される。次いで、口栓の底が、口栓支持部材により、この密封容器の壁の外表面の注ぎ口周囲領域に押圧されることにより、注ぎ口周囲領域に溶着固定される(例えば特公昭59−4300号公報参照)。
【0004】
【発明が解決しようとする課題】
ところが、このような従来のヒートシール方式による口栓取付手段は、口栓の底の加熱溶融作業と、前記容器の壁の外表面の注ぎ口周囲領域の加熱溶融作業とが、それぞれ別々の場所で、別の加熱手段によって行われている。しかも、注ぎ口周囲領域に対する口栓の固定作業が、さらに別の場所で行われるので、加熱溶融作業の開始から口栓の固定作業の終了までに、比較的多くの時間を費やしていた。併せて比較的大きな作業空間も必要としているので、充填密封装置が大型化する傾向にあった。
【0005】
しかも、この従来の大型の充填密封装置によって、単位時間当たりの口栓固定作業の効率化を意図すると、充填密封装置の構造が更に複雑にならざるを得なかった。
【0006】
また、この従来の手段では、口栓を前記容器に固定するときには、充填物が既に充填されている上に、容器の底と、切り妻屋根形状の上部とが既に密封されている。このため、口栓の底を固定するべく、これを前記容器の外表面の切り妻屋根形状領域の注ぎ口周囲領域に対して押しつけると、切り妻屋根形状領域が内側に撓んでしまう。その結果、この容器の外表面の切り妻屋根形状領域の注ぎ口周囲領域に対して、口栓の底の十分な密着が果たせず、ひいては注ぎ口周囲領域に対して、口栓の底の十分な固定が行われなくなる。
【0007】
また、この容器の外表面の切り妻屋根形状の注ぎ口周囲領域を加熱することにより、既に充填されている充填物の変質を招来するおそれもあった。
【0008】
そこで、この従来の注出口栓の取付装置の問題点を改めるための一つの手段として、次のような提案がなされている。
この提案は、前記従来のような完全に密封された容器を使用せず、以下に示す装置、部品、そして素材から構成されている。
すなわち、一端が密封されていると共に、他端が開口されている筒状の材料。この筒状の材料の、前記他端開口側から内部に挿入され、この筒状の材料の壁の内表面に対して所定の位置に対応した領域において当接し、外表面の所定の位置を内部から支持する内面支持部材、つまりアンビル。外部から供給された口栓を支持し、筒状の材料の壁の外表面上の所定の位置に口栓の底を当接させる口栓支持部材。そして、この口栓支持部材により支持されている口栓が、筒状の材料の壁の外表面上の所定の位置に当接された時、超音波を口栓の底に適応して底を加熱溶融させることにより、口栓の底を筒状の材料の外表面の所定の位置に溶着固定する超音波溶着手段。以上から構成されたものである(一例として、特公平7−98371号公報参照)。
【0009】
この提案の優れている点は、まず第1に、口栓の固定が精度良く行える点である。その理由は、先に示した温風を用いて口栓を取り付ける旧来のヒートシール方式に比べて、口栓を取り付ける筒状の材料の外表面の切り妻屋根形状領域の注ぎ口周囲領域に相当する部位が、内部からアンビル、すなわち容器受け部材で支えられているために、口栓を外表面から押圧しても、この注ぎ口周囲領域が内側に撓むことがないからである。
【0010】
また、第2点は、口栓を注ぎ口周囲領域に相当する部位に当接させた状態から超音波によって加熱溶融しながら押圧固定するために、固定に要する時間を大幅に短縮でき、作業効率の格段の向上を図れる点である。
【0011】
更に、口栓を溶着固定するに当たって、従来のヒートシール方式を採用する手段は、複数のステーションを用いて、分業的に処置が施される。しかし、この提案では、多数の作業工程を連続的に組み合わせて構成される充填装置の、その多くの作業工程の内の一つ、あるいは二つのステーション内(作業工程)において完結する構成が採用されているために、装置の小型化と、システムの簡素化とを一挙に図ることもできる。
【0012】
そして、第3点は、超音波により口栓の底を加熱溶融させて、口栓の底を筒状の材料の外表面に溶着固定するもので、容器内に充填物を充填する前に口栓が先付けされる手段を採用したことで、充填物の変質を招来するといった不都合が解消された点である。
【0013】
ところで、この新しい提案では、筒形状に形成されたホーン部を備え、このホーン部の底表面には真空源に連通されて成る超音波溶着手段が、口栓を保持するための支持部材の役割を果たしていた。すなわち、このホーン部の先端の開口を利用し、ここにキャップ付きの口栓のキャップが挿入されるようにし、口栓が挿入されると前記真空源が働き、キャップ付きの口栓の外方フランジを、ホーン部の先端面に当接させた状態で、ホーン部先端に吸着支持されるようしている。
【0014】
本発明者は、この新しい提案を更に発展的に改良するべく鋭意研究を重ね、口栓の供給、支持そして位置決めが簡便でしかも的確、かつ、精度良く行える新規な注出口栓の取付装置を開発するに至ったので、ここに提案する。
【0015】
本発明は、折り畳み封止されて平坦な底を有した筒の上端開口から、この容器内に挿入される容器受け部材と、この容器受け部材に対向して配置された超音波溶着手段とを備え、容器の外表面の所定の位置に口栓を押し付けながら、これを超音波溶着手段によって、固着させるようにした注出口栓の取付装置であって、口栓の供給、支持、そして位置決めが、簡便で、しかも的確、かつ、精度良く行え、併せて簡素な構成にまとめ得るようにすることを課題とする。
【0016】
【課題を解決するための手段】
口栓を受入れ保持してこれを容器の外表面の所定の位置に運ぶ、口栓の支持手段が、この口栓の外形形状の特性をうまく活用したことである。すなわち、この種注出口栓は合成樹脂素材で成形されているので、弾性変形し易く、また、いうまでもなくフランジが口栓本体の半径方向外方に大きく張り出して、表面並びに裏面(底)が平滑面であり、更には成形加工が容易であることなど、を生かして、主として前記超音波溶着手段の振動ホーンを利用して保持されるように構成されたことである。
すなわち、口栓を受入れ保持して、これを容器の外表面の所定の位置に運ぶ、口栓の支 持手段が、口栓のフランジが挿通できるに足る挿通穴を備えるとともに、この挿通穴の内面には、所定間隔で係止爪が設けられていて、この爪の突出端から前記挿通穴の中心までの寸法が、前記フランジの半径よりも小さな寸法に設定され、口栓のフランジの弾性変形によって、このフランジが、この係止爪を越えて超音波溶着手段側に強制的に移行されるように構成され、併せて前記超音波溶着手段の振動ホーンの先端と、この係止爪との間でフランジが挟持されるように構成されたことである。
【0017】
この手段によれば、フランジの弾性変形を生かして、口栓の支持手段に設けられた係止爪を利用して振動ホーンとの共同作業で、フランジを挟持して、的確、しかも簡便に係止保持させることができる
【0018】
したがって、この発明は次の効果を有する。
まず、本発明は、基本的に以下の4つの効果を有する。
つまり、その第1点は、口栓を取り付ける容器の外表面の切り妻屋根形状領域の注ぎ口周囲領域に相当する部位が、内部からアンビル、すなわち容器受け部材で支えられている。そのため、口栓を外表面から押圧しても、この注ぎ口周囲領域が内側に撓むことがなく、口栓の固定が精度良く行える。
【0019】
また、第2点は、口栓を注ぎ口周囲領域に相当する部位に当接させ、この状態から超音波によって、加熱溶融、そして押圧固定するから、固定に要する時間を大幅に短縮でき、作業効率の格段の向上が図れる。
【0020】
更に、第3点は、口栓を溶着固定するに当たって、従来のヒートシール方式を採用する手段は、複数のステーションを用いて、分業的に処置が施される。しかし、この提案では、多数の作業工程を連続的に組み合わせて構成される充填装置の多くの作業工程の内の一つ、あるいは二つのステーション内(作業工程)において完結する構成が採用されている。したがって、装置の小型化とシステムの簡素化とを一挙に図ることもできる。
【0021】
そして、第4点は、容器内に液体を充填する前に、超音波で口栓の底を加熱溶融させて、口栓の底を容器の外表面に溶着固定して、これを先付けする手段を採用されている。その結果、充填物の変質を招来するといった不都合が解消される。
【0022】
そして、この発明は、特に以下の効果を有する。
すなわち、本発明は、口栓を、いわば機械的に支持できることと合わせて、口栓のフランジの弾性変形や、フランジの平滑面など、口栓の備える本質的な特性をうまく利用して、挟持という支持手段が採用される。したがって、口栓の供給、支持、そして位置決めが簡便で、しかも的確、かつ、精度良く行え、併せて簡素な構成に纏めることができた。
【0023】
この発明において、口栓を受入れ保持してこれを容器の外表面の所定の位置に運ぶ、口栓の支持手段が、この口栓の外形形状の特性を生かして、主として前記超音波溶着手段の振動ホーンを利用して保持されるような構成と合わせて、前記容器受け部材と超音波溶着手段の振動ホーンとの間に前記超音波溶着手段の振動ホーンの往復摺動経路内外に出退して、前記口栓支持手段に口栓を供給する口栓供給手段が配設されることが好ましい。
このように、口栓供給手段が設けられることで、口栓の供給が一層簡便で、しかも的確に行える上に、自動化並びに省力化に貢献できるからである。
【0024】
更に、この発明において、容器受け部材と、超音波溶着手段の振動ホーンとの間に、前記超音波溶着手段の振動ホーンの往復摺動経路内外に出退して、前記口栓支持手段に口栓を供給する口栓供給手段が配設されているとともに、口栓を受入れ保持して、これを容器の外表面の所定の位置に運ぶ、口栓の支持手段が、前記口栓供給手段と超音波溶着手段の振動ホーンとの間に配設され、この口栓の支持手段が口栓のフランジが挿通できるに足る挿通穴を備えるとともに、この挿通穴の内面には、所定間隔で係止爪が設けられていて、この爪の突出端から前記挿通穴の中心までの寸法が、前記フランジの半径よりも小さな寸法に設定され、口栓のフランジの弾性変形によって、このフランジが、この挿通穴内を前記口栓供給手段側から、この係止爪を越えて超音波溶着手段側に強制的に、強制的に移行されるように構成され、併せて前記振動ホーンの先端とこの係止爪との間でフランジが挟持されるように構成されるのが好ましい。
このような、口栓が、この支持手段に設けられた係止爪と、振動ホーンの先端とで挟持されて保持される構成は、その保持姿勢が、常に所期通り、的確に維持できる。その結果、口栓の供給、支持、そして位置決めが簡便で、しかも的確、かつ、精度良く行え、併せて簡素な構成に纏めることができる。
【0025】
また、前記口栓の支持手段が、口栓を受入れ保持する挿通穴が設けられた腕と、この腕を振動ホーン側へ引き寄せる強制引き寄せ手段とを備え、弾性変形によって、フランジが、前記挿通穴内を前記口栓供給手段側から、この係止爪を越えて超音波溶着手段側に、強制的に移行された後の口栓を、この強制引き寄せ手段で、前記腕を振動ホーン側へ引き寄せることによって、この振動ホーンの先端と、前記挿通穴に設けられた係止爪との間で、口栓のフランジが挟持されるように構成されているのが好ましい。
このように、前記腕を、超音波溶着手段側へ、強制的に引き寄せると、前記挿通穴に設けられた係止爪と振動ホーンとによる口栓のフランジの挟持作用の精度が格段に高くなる。その結果、保持姿勢が、常に所期どおり、一段と的確に維持され、口栓の供給、支持、そして位置決めが簡便で、しかも的確、かつ、精度良く行え、併せて簡素な構成に纏めることができる。
【0026】
また、前記口栓供給手段は、前記振動ホーンの往復摺動経路内に突入して後、振動ホーン側にも移行可能に構成されるのが好ましい。
このように、口栓供給手段が、振動ホーン側にも移行されることによって、口栓が、支持手段に対して、強制的に押圧されたり、圧入されたりするので、口栓を支持手段に保持させる作用がより的確に達成される。その結果、保持姿勢が、常に所期どおり、一段と的確に維持され、口栓の供給、支持、そして位置決めが簡便で、しかも的確、かつ、精度良く行え、併せて簡素な構成に纏めることができる。
【0027】
更に、前記口栓の支持手段は、以下の構成を備えるのが好ましい。
前記超音波溶着手段に対して、この超音波溶着手段の前記容器受け部材に対する接近離間の作動に連動して、共に前記容器受け部材に対して、接近離間自在に構成されている。そして、また、常時は、口栓受入れ及び保持の所期の待機姿勢にあるときの前記超音波溶着手段との所定の相対間隔が保たれ、この口栓の支持手段の前記容器受け部材側への摺動が阻止された後は、前記超音波溶着手段が所定距離この容器受け部材側へ摺動して、両者の相対間隔を狭めることができる連動手段が設けられている。
このように、連動手段が採用されると、口栓支持装置による口栓の保持、容器の外表面の所定の位置への移送、そして保持の解除、の一連の作動が、超音波溶着手段の口栓の溶着固定のための一連の作動に連動しておこなわれる。その結果、装置の構成を格段に簡素に纏めることができる。
【0028】
【0029】
以上述べたとおり、本発明は、口栓は常に所定の姿勢で的確に保持されるから、受入れ、それに引き続く容器の外表面の所定の位置までへの移送が、口栓の脱落などの不都合もなく所期の溶着固定に好ましい好適な姿勢で行え、溶着固定も好適な姿勢で行える。その結果精度の高い溶着固定が可能になった。
【0030】
【発明の実施の形態】
以下、本発明の好適な実施の形態を図1乃至図12を参照して、以下詳細に説明する。
図12には、本発明の注出口栓の取付装置により口栓1が取り付けられ、かつ、図示しない液体充填装置によって充填密封された後の口栓付き密封容器と称されるカートン2の上部が示されている。この充填密封された後のカートンは、内外表面にプラスチックが被覆されることにより、防水加工された紙製の四角筒状の材料から形成されており、四角形状の平坦な底を備えている。図に示されるように、このカートン2の上部は周壁2Aが切り妻屋根形状に折り畳まれ、そして熱溶着により封止されている。そしてこの切り妻屋根形状部分2Bの一方に注ぎ口2Cが形成されており、この注ぎ口2Cに対応させて口栓1が溶着固定されている。また、注ぎ口2Cはカートン2の周壁2Aの内表面に貼着された密封フィルム2Dにより閉塞されている。
【0031】
また、この実施の形態において、口栓1は、図11,図12に示されるように、円筒形状の口栓本体1Aとキャップ1Bとを備えている。そして、キャップ1Bは、口栓本体1Aの外周面に形成された雄ねじに螺合されて、この口栓本体1Aに、繰り返し着脱可能である。また、この口栓1は、前記容器1の注ぎ口2Cに、同心的に溶着固定される。口栓本体1Aの下端には、外方へ突出されたフランジ1Cが、一体的に設けられている。そして、このフランジ1Cの底が、前記カートン2の外表面の注ぎ口2C周辺領域に固定されることで、前記の溶着固定が達成される。
【0032】
(第1の実施の形態)
図1において、図示されていないが、爪を備えた搬送装置によって容器、例えば角筒状のカートン2が紙面垂直方向に搬送される。この搬送装置の上方には、フレーム3によって支持された容器受け部材4、例えばステンレス製で角筒状のアンビルが固定されている。
【0033】
この容器受け部材4の側方、図上右方には、注ぎ口2Cの口栓溶着手段としての超音波溶着装置5が配置されている。この超音波溶着装置5は、前記容器受け部材4側に向かって突設された振動ホーン6と、これを支持する支持台枠7を備えている。そして、下方に設けられた直線状の案内路8にガイドされながら、図示しない駆動装置によって駆動され、矢印A−A’方向へ往復スライドする。つまり、前記容器受け部材4に対して、直線状に近づいたり、離れたりするように構成されている。また、前記振動ホーン6の先端には、開口6Aが設けられている。この開口6Aは、その内径寸法が、前記口栓1のキャップ1Bの外径寸法よりもわずかに大きく、また、奥行きが、キャップ1Bの高さ寸法よりもやゝ大きく、設定されている。
【0034】
前記容器受け部材4と、支持台枠7との間には、前記容器受け部材4側から超音波溶着装置5側に向かって順に、口栓1の供給手段としての口栓供給装置9と、口栓1の支持手段としての口栓支持装置10が設けられている。
【0035】
この口栓供給装置9は、前記振動ホーン6の往復摺動経路内に、その経路外から経路内へ出退自在に設けられている。そして、遊端(下端)に、口栓1の保持吸着部9Aが設けられていて、ここに、図外口栓供給シュートから、間歇的に繰り出されてくる口栓1を、真空吸着するように構成されている。また、この口栓供給装置9は、振動ホーン6の往復摺動経路内に突入した後、この振動ホーン6の往復摺動方向、つまり図中A−A’方向に沿って振動ホーン6の先端側に横移動できるように構成されている。
【0036】
前記口栓支持装置10は、前記口栓供給装置9に吸着保持された口栓1を受入れてこれを保持し、併せて保持した口栓1を、前記容器受け部材4が挿入された、カートン2の所定の位置の外表面に対応する位置に運ぶものである。
【0037】
この口栓支持装置10の具体的な構成は、図1,図2に示されるとおりで、以下に示す構成を備える。すなわち、遊端に、前記口栓1のフランジ1Cの直径よりもやゝ大きな径を備えた、挿通穴としての丸穴11が設けられた腕12を有している。この腕12の下部は、腕支持台枠13の上に設けられたガイドレール14に支持される。この腕支持台枠13は、前記振動ホーン6の往復摺動経路に沿った方向に、前記超音波溶着装置5に関連付けて往復動される。また、腕12も、前記ガイドレール14を介して、やはり前記振動ホーン6の往復摺動経路に沿った方向に、往復摺動案内自在に支持されている。この腕12の、前記振動ホーン6の往復摺動経路に沿った方向の、往復摺動案内は、前記腕支持台枠13上の前記超音波溶着装置5側に配された、流体圧シリンダ15によって強制的に行われる。
【0038】
したがって、前記超音波溶着装置5並びに前記腕支持台枠13は、共に下部に配された前記ガイドレール8にガイドされながら、矢印A−A’方向へ往復スライドする。つまり、前記容器受け部材4に対して直線状に近づいたり、離れたりするように構成されている。
【0039】
また、前記超音波溶着装置5と、前記腕支持台枠13との間には、開きコイルバネ16が介装されている。また、この腕支持台枠13の、前記容器受け部材4側には、所定の距離を隔ててストッパー17が設けられ、このレバー支持台枠13の、一定距離以上の、容器受け部材4側への摺動を牽制するように構成されている。
【0040】
また、前記超音波溶着装置5の前記容器受け部材4側にも、所定の距離を隔ててストッパー18が設けられ、この超音波溶着装置5の、一定距離以上の、容器受け部材4側への摺動を牽制するように構成されている。
【0041】
前記両ストッパー17,18の相対的な配置位置関係は、以下の条件で設定されている。すなわち、前記超音波溶着装置5の容器受け部材4側への摺動に伴って、口栓支持装置10も共に容器受け部材4側に摺動されるが、この口栓支持装置10の前記腕12が容器受け部材4が嵌入されているカートン2の直前に至ったとき、この口栓支持装置10の腕支持台枠13が、ストッパー17に当接され、それ以上の容器受け部材4側への摺動が阻止される。しかし、この時点では、前記超音波溶着装置5は、引き続き容器受け部材4側への摺動が許されていて、さらに所定距離を容器受け部材4側に摺動し、最終的には、前記振動ホーン6の先端が前記カートン2の外表面から口栓1のフランジ1Cの肉厚に相当する寸法にまで近接した時点でストッパー18に当接されて、その容器受け部材4側への摺動が阻止されるように構成されている。この超音波溶着装置5と口栓支持装置10との摺動量の差は、両装置の間に介装された前記開きコイルバネ16が圧縮されることによって生じるように構成されている。
【0042】
前記腕12に設けられた丸穴11には、図2に示されるように、内面に、周方向所定間隔置きで複数個(図例では3個)の係止爪20が突設されている。この係止爪20の突出端から、この丸穴11の中心までの寸法が、前記口栓1のフランジ1Cの半径よりもやゝ小さな寸法に設定されている。このように構成されることによって、口栓1のフランジ1Cの弾性変形によって、このフランジ1Cが、この丸穴11内を、前記口栓1の口栓供給装置9側から、この係止爪20を越えて超音波溶着装置5側に、強制的に移行される。
【0043】
次いで、上記第1の実施の形態の作用を説明する。
先ず、上方が開口されているカートン2の上記開口には、図1に示されるように、容器受け部材4が挿入されている。このカートン2は、図示されていないが、底が平坦な四角形状に折り畳まれて密封され、かつ、液体などの充填物はまだ充填されていない。この容器受け部材4は、カートン2の注ぎ口2Cを閉塞するために、カートン2の内表面に貼着されている密封フィルム2Dに当接している。したがって、カートン2の内表面は注ぎ口2Cの周辺領域を、記密封フィルム2Dを介してこの容器受け部材4によって支持されている。図中、カートン2の周壁2Aの上部に示されている二点鎖線は、このカートンの上部を密封するために切り妻屋根形状に折り畳むたときの筋押し線である。
【0044】
前記カートン2の上部開口へ容器受け部材4を嵌入させる手段としては、所定の位置に固定的に設置された容器受け部材4に対し、カートン2が下方より接近して、行われたり、このやり方とは逆に、上下方向に移動しないカートン2に対して容器受け部材4が上方より接近することにより行われたり、更にはカートン2と容器受け部材4とが互いに接近し合うことによっても行われるもので、いずれの手段も採用できる。また、このとき、前記超音波溶着装置5並びに口栓支持装置10はともに、図1に示されるように、互いに容器受け部材4からは最も遠ざかっていて、所期の待機姿勢に保たれている。
【0045】
次いで、図3、図4示されるように、下端に口栓1を吸引保持した口栓供給装置9が、図外駆動装置によって下降し、前記振動ホーン6の往復摺動経路内に突入されて所定の位置、つまり口栓支持装置10の前記腕12に設けられた丸穴11に対応する上下高さ相当位置まで下降する。この下降動作が完了すると、次には、この口栓口栓供給装置9は、前記振動ホーン6の往復摺動方向、つまり図中A−A’方向に沿って、この振動ホーン6の先端側に向かって横移動する。そして、口栓1を、そのキャップ1B側から順に腕12の丸穴11内に挿入させる。更なる挿入によって、前記フランジ1Cが係止爪19の容器受け部材4側の側面に引っ掛かるが、更に挿入作動が継続される。最終的には、このフランジ1Cの辺縁を弾性変形させながらこの係止爪19を越えて、フランジ1Cを振動ホーン6の先端側へと移行させる。ここで、この口栓供給装置9の横移動が、停止し、その口栓吸着作動も終了し、口栓1は、この丸穴11内に受入れ保持される。
【0046】
この口栓1の丸穴11内への挿入が完了すると同時に、機を逸せず、前記流体圧シリンダ15が作動し、図5に示されるように、腕12が振動ホーン6の先端側に強制的に引き寄せられる。この動作によって、振動ホーン6の先端が、この丸穴11に嵌入されてゆき、キャップ1Bが、この振動ホーン6の先端に設けられた開口6A内に挿入されてゆく。そして、最終的には、この振動ホーン6の先端で、このフランジ1Cの振動ホーン側表面が押圧されるまで摺動される。これによつて、口栓1は、図6に示されるように、丸穴11内において、係止爪19と振動ホーン6の先端との間にフランジ1Cがしっかりと挟持された形で受入れ保持されことになる。したがって、口栓1の保持姿勢は格段に的確で、所期の目的を達成するのに十分な好ましい姿勢に保たれることになる。
【0047】
なお、口栓1が供給される姿勢は、図1、図2に示されるように、口栓1の軸線が水平方向に向かい、フランジ1Cが垂直方向に沿った姿勢となっている。
【0048】
口栓1の受入れが完了すると、図外駆動装置によって、前記口栓供給装置9は、振動ホーン6の往復摺動経路外に引退する。引き続いて、図外駆動装置の働きで、前記超音波溶着装置5が、容器受け部材4側に向かって摺動される。この超音波溶着装置5の摺動に伴って、前記開きコイルバネ16を介して、口栓支持装置10も共に、両者の所期の待機姿勢にある時の、図1に示される、相対間隔を保ったままで、容器受け部材4側に向かって摺動されることになる。
【0049】
口栓支持装置10が所定距離を摺動すると、これがストッパー17に当接されてその摺動が阻止される。この摺動が阻止される位置は、前記口栓支持装置10の腕12が前記カートン2の外表面にほゞ当接する位置である。しかし、前記超音波溶着装置5はいまだストッパー18に当接しないために、引き続き容器受け部材4側に向かって摺動る。このときの超音波溶着装置5の摺動によって、前記口栓支持装置10との間に介装されている、開きコイルバネ16が押圧圧縮される。これによって、この超音波溶着装置5と口栓支持装置10との前記待機姿勢のあるときの相対間隔が狭まる。したがって、図7に示されるように、前記振動ホーン6は、丸穴11内の口栓1のフランジ1Cをそのまま先端で容器受け部材4側に押圧し、フランジ1Cを再び弾性変形させながら、係止爪19による係止を解いて、口栓1をカートン2側に押し出し、前記注ぎ口2Cに対して同心的に配置した状態で、口栓1のフランジ1Cの底をカートン2の外表面の注ぎ口周辺領域にピタリと当接させる。このときには、カートン2の内表面の注ぎ口2C周辺領域が、密封フィルム2Dを介して、容器受け部材4により支持されているので、カートン2の注ぎ口2C周辺領域は、内方に撓んで湾曲するおそれがない。したがって、カートン2の外表面の注ぎ口周辺領域への口栓1のフランジ1Cの底の当接圧はその底全域にわたって均一となる。
【0050】
前記振動ホーン6は、図1に示されるように、超音波発生源20に連結されている。そして、口栓1のフランジ1Cの底がカートン2の外表面の注ぎ口周辺領域に当接したとき、この超音波発生源20が作動し、振動ホーン6へ超音波が伝達されて、この振動ホーン6が超音波振動子として機能する。この結果、図11に示されるように、振動ホーン6の先端から伝達された超音波が、フランジ1Cの底、及びカートン2の外表面の注ぎ口周辺領域のプラスチック被覆とを、瞬時に加熱溶融するので、口栓1のフランジ1Cは、このカートン2の外表面の注ぎ口周辺領域に溶着固定される。底全域にわたり均一な当接圧でカートン2の外表面の注ぎ口周辺領域に当接されている口栓1のフランジ1Cは、このカートン2の外表面の注ぎ口周辺領域に十分強固に溶着固定されることになる。
【0051】
超音波加熱溶融により、口栓1のフランジ1Cが、前記カートン2の外表面の注ぎ口周辺領域に溶着固定されるに必要な所定時間が経過した後、超音波発生源20から振動ホーン6への超音波の伝達が停止される。そして、超音波溶着装置5は、図外駆動装置によって、振動ホーン6の先端を口栓1から離間させるように摺動されてゆき、次の口栓1が供給されるための所期の待機位置にまで、復帰後退されて行くことになる。
【0052】
また、この超音波溶着装置5の所期の待機姿勢への摺動復帰に先立って、まず、前記腕支持台枠13の後退に伴って、前記開きコイルスプリング16も、その弾性反発力で所期の待機姿勢の状態の、無負荷の姿勢にまで伸長復帰する。そして、この超音波溶着装置5と口栓支持装置10との相対間隔を、所期の待機姿勢のときの間隔まで、戻すように働く。このようにして、超音波溶着装置5並びに口栓支持装置10共々、所期の口栓1の受入れ及び保持の姿勢に復帰される。
【0053】
なお、前記第1の実施の形態では、口栓支持装置10の腕12に設けられた口栓1の挿通穴が、丸穴11で示されている。しかし、必ずしも丸穴である必要はなく、三角、四角、あるいはそれ以上の多角の穴も採用できる。要するに、口栓1のフランジ1Cと上記の寸法関係に有る係止爪を備えた穴であれば、その形状、構造は、いかなるものも包含される。
【0054】
また、この口栓支持装置10の容器受け部材4側への摺動を阻止するために、図に示されるようなストッパー17が採用されている。しかし、このストッパー17に代えて、容器受け部材4が挿入され、図1の姿勢にあるカートン2の外表面に、前記腕12を、直に当接されるように構成することもできる。つまり、この腕12をストッパー17の代わりとして機能させるものである。
【0055】
更に、この第1の実施の形態では、前記口栓供給装置9が振動ホーン6の往復摺動軌跡内に突入した後、横移行される動作に関連付けて、口栓1が、口栓支持装置の挿通穴11内に嵌入されるように構成されている。しかし、この口栓供給装置9の横移行によってもたらされる作用を、腕12の強制的な超音波溶着装置5側への引っ張りをつかさどる流体圧シリンダ15に兼用させることもできる。つまり、口栓供給装置9は、単に振動ホーン6の往復摺動軌跡内への出退のみの作動に止まるように構成する。そして、前記横移行によってもたらされる作用を、前記腕12が、流体圧シリンダ15の作動よって、この口栓供給装置9側にも、強制的に摺動されるように構成することで賄う。これによって、口栓のフランジ1Cが、弾性変形されて挿通穴11内の係止爪19を越えて、振動ホーン6の先端側に向かって押し込まれるようにすることもできる。
このようにすることによって、口栓供給装置9に対する作動システムの簡素化が図れる。ただし、口栓供給装置9の口栓吸着の解除のタイミングが、上記の作用の説明でなされた条件よりもやゝ遅れる必要がある。つまり、フランジ1Cの表面に振動ホーン6の先端が当接されるまでは、口栓吸着の作動が継続されるのが好ましい。
【0056】
(第2の実施の形態)
上述した第1の実施の形態に示された口栓支持装置10の代わりとして、図8、図9に示されるような代替構造も採用できる。効果上は、前記第1の実施の形態と同様であるが、更に構造が格段にシンプルになる効果を有している。
この第2の実施の形態では、前記超音波溶着装置5の振動ホーン6の先端に、真空吸着手段によって、口栓1を保持するものである。すなわち、この振動ホーン6の先端部周壁21の先端に、周方向所定間隔置きで、複数個の吸引口22が開設される。そして、この吸引口22それぞれに、この振動ホーン6の先端部周壁21内を貫通して設けられた、吸引路23が連結され、更に、これらの吸引路23が、真空源24に接続される。
【0057】
このように、複数個の吸引口22によってフランジ1Cを吸引すると、フランジ1Cに部分的な凹凸や曲がりあって、フランジ1Cの全周がぴたりと振動ホーン6の先端に密着しない場合であっても、良好な吸引保持を可能にする。したがって、単一の吸引口による吸引保持に比べて、その保持性能が格段に改善され、口栓1の保持姿勢は、格段に的確で、所期の目的を達成するのに十分に好ましい姿勢に保たれることになる。
【0058】
いうまでもなく、この第2の実施の形態による場合は、第1の実施の形態で採用された口栓支持装置10は不要で、前記口栓供給装置9と超音波溶着装置5とで、所期の目的が達成されるので、全体構造が格段にシンプルになり、省エネルギー化にも貢献する。
【0059】
なお、図8中に示される構成の内、前記第1の実施の形態の構成と同様の構成を備えた口栓供給装置9と超音波溶着装置5、更に容器受け部材4に関しては、具体的な構造並びに作用が、前記第1の実施の形態と同様であるから、同じ符号を付してその構造の詳細な説明は割愛した。
【0060】
(第3の実施の形態)
上述した第1あるいは第2の実施の形態に示された口栓支持装置10の代わりとして、図10に示される代替構造も採用できる。効果上は、前記第1の実施の形態と同様であるが、更に構造が格段にシンプルになる効果を有している。
この第3の実施の形態では、前記超音波溶着装置5の振動ホーン6の先端で直に口栓1を挿入保持しようとするものである。すなわち、この振動ホーン6の先端に設けられた前記開口6Aと、口栓1のフランジ1Cの根元に形成された、半径方向外方に突出された、口栓1の中心からこの突出端までの半径が、前記開口6Aの半径よりもやゝ大きな寸法に設定されている係止突起1Dとから構成される。前記口栓供給装置9によって、口栓1を、この開口6Aに、前記係止突起1Dの突出端を弾性変形させながら、挿入させる。
【0061】
このような手段によると、フランジ1Cに部分的な凹凸や曲がりなどの有無にはかかわりなく、良好な保持を可能にする。したがって、吸引保持に比べても、その保持性能が更に高まり、口栓1の保持姿勢は格段に的確で、所期の目的を達成するのに十分な好ましい姿勢に保たれることになる。
【0062】
いうまでもなく、この第3の実施の形態による場合でも、第1の実施の形態で採用された口栓支持装置10は不要である。前記口栓供給装置9と超音波溶着装置5とで、所期の目的が達成されるので、全体構造が格段にシンプルになり、省エネルギー化にも貢献する。
【0063】
なお、上述した各実施の形態では、カートン2の注ぎ口2Cを密封する密封フィルム2Dが、カートン2の内表面に貼着された場合を例示した。しかし、この密封フィルム2Dが、前記口栓1のフランジ1Cの底に強力に貼着され、この密封フィルム2Dを、底とともに、カートン2の外表面の注ぎ口周辺領域に、溶着された場合にも適用できる。その外、口栓本体1Aの底近くに、使用に当たって、注ぎ口を開口すべく、破断可能な閉止蓋体を備えた口栓や、キャップの開き動作に伴って、前記カートン2の注ぎ口2Cを密封する密封フィルム2Dを切断する切断刃体を備えた口栓なども採用できる。これらは、いずれもフランジを備えていることが必須であることはいうまでもない。
【0064】
また、上述した各実施の形態では、口栓1は、カートン2ノ外方から溶着固定される場合を例示した。しかし、本発明は、このいわゆる外付け方式専用に採用されるものではなく、図示しないが、従来の内付け方式と併用できる点にも特徴がある。つまり、一例として、特許第2503470号の特許公報に示されているような構造である。すなわち、口栓が、カートンの内側から注出口に挿入されて仮装着され、これを溶着手段によって、容器に固着する手段にも簡便に装着して、内、外の両方式を一つの液体充填装置に共存させることも簡便に採用できる。この場合、一つのステーション内に併存させる手段と、工程の中で前後2つのステーションに分けて装着させる手段とを採用できる。いずれにしても、口栓供給装置の口栓供給シュートの先端から口栓受取手段への受渡し位置が、内付けと外付けとでは異なるために、この口栓供給シュートは両方式の口栓受取手段へ位置変更が可能な構成が採用される必要があることはいうまでもない。
【0065】
このように、内、外の両方式を併存させることによって、口栓の取付け作業の更に格段の効率アップを図れ、併せて省エネルギー、省資源の向上も果たせ、ひいては製品のコストダウンに大きく貢献できる。
【図面の簡単な説明】
【図1】 注出口栓の取付装置の第1の実施の形態を示し、装置全体構造を概略的に表した一部切欠き正面図である。
【図2】 図1の口栓支持装置の腕に形成された挿通穴の構造と、これに受け入れられる口栓との相対関係を説明し、(A)はその要部の拡大側面図、(B)はその要部の拡大断面図である。
【図3】 作用の説明図である。
【図4】 作用の説明図である。
【図5】 作用の説明図である。
【図6】 作用の説明図である。
【図7】 作用の説明図で、超音波溶着手段によって口栓がカートンの外表面の所定の位置に溶着固定される状態を説明した要部の断面図である。
【図8】 注出口栓の取付け手段の第2の実施の形態を示し、装置の要部を概略的に表した一部切欠き正面図である。
【図9】 図8の口栓支持手段の要部を拡大して説明した断面図である。
【図10】 第3の実施の形態を示し、口栓支持手段の要部を拡大して説明した断面図である。
【図11】 口栓がカートンの外表面に溶着固定されるときの、振動ホーン、口栓、カートンそしてアンビルの相対位置を説明する要部の一部切欠き拡大断面図である。
【図12】 超音波溶着装置によって、口栓がカートンの外表面の所定の位置に、溶着固定され、充填物が充填されて密封された後の、口栓付き容器の上部を概略的に示す一部切欠き外観図である。
【符号の説明】
1…口栓、1A…口栓本体、1B…キャップ、1C…フランジ、1D…係止突起、2…容器、2A…周壁、2B…切り妻屋根形状部分、2C…注ぎ口、2D…密封フィルム、4…容器受け部材、5…超音波溶着手段、6…振動ホーン、6A…開口、9…口栓供給手段、10…口栓支持手段、11…挿通穴、12…腕、16…開きコイルスバネ、19…係止爪、22…吸引口。
[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a spout plug attachment device for attaching a spout to a spout of a container containing, for example, paper, cereal such as liquid, flour, or rice, and more specifically, a spout made of paper. The present invention relates to a spout stopper attachment device that is effective for supplying, supporting, and positioning the stopper when it is attached to a container.
[0002]
[Prior art]
  Conventionally, this type of container is made of a paper tube that is waterproofed by covering its inner and outer surfaces with plastic, and is formed of a square tube having a flat rectangular bottom that is folded and sealed. Further, the upper part of the peripheral wall of the rectangular tube is folded and sealed in a gable roof shape. And a spout is formed in one inclined surface of the gable roof shape area | region of the upper part of the surrounding wall of this square tube, and the stopper is fixed corresponding to this spout. For example, milk, fruit juice, sake, and liquid seasonings such as soy sauce, as well as flours and grains such as rice are filled in the container.
[0003]
  By the way, the following procedure and means have been adopted to fix the stopper to such a container. That is, the container is first filled with the filling, and then the upper end opening is sealed. Next, the area around the spout on the outer surface of the wall of the sealed container is heated and melted by hot air blown from an electric heater. Subsequently, the bottom of the plug supported by the plug support member is also heated and melted by the hot air. Next, the bottom of the spout is welded and fixed to the peripheral area of the spout by being pressed against the peripheral area of the spout on the outer surface of the wall of the sealed container by the spigot support member (for example, Japanese Patent Publication No. 59-4300). No. publication).
[0004]
[Problems to be solved by the invention]
  However, such a conventional heat-sealing-type plug attachment means has different locations for the heating and melting operation at the bottom of the plug and the heating and melting operation in the area surrounding the spout on the outer surface of the container wall. This is done by another heating means. In addition, since the operation of fixing the plug to the region surrounding the spout is performed in another place, a relatively large amount of time was spent from the start of the heating and melting operation to the end of the operation of fixing the plug. In addition, since a relatively large working space is required, the filling and sealing device tends to increase in size.
[0005]
  Moreover, if the conventional large filling and sealing device is intended to improve the efficiency of the stopper fixing operation per unit time, the structure of the filling and sealing device has to be further complicated.
[0006]
  Further, according to this conventional means, when the stopper is fixed to the container, the filling is already filled, and the bottom of the container and the upper part of the gable roof shape are already sealed. For this reason, if this is pressed against the spout surrounding area of the gable roof-shaped area on the outer surface of the container to fix the bottom of the spigot, the gable roof-shaped area will bend inward. As a result, the bottom of the spout cannot be sufficiently adhered to the area around the spout of the gable roof-shaped area on the outer surface of the container, and as a result, the bottom of the spout is sufficient to the area around the spout. Will not be fixed.
[0007]
  Further, heating the area around the spout of the gable roof shape on the outer surface of the container may cause alteration of the already filled material.
[0008]
  Then, the following proposal is made | formed as one means for correcting the problem of this conventional spout stopper attachment device.
  This proposal does not use a completely sealed container as in the prior art, but consists of the following devices, parts, and materials.
  That is, a cylindrical material having one end sealed and the other end opened. This cylindrical material is inserted into the inside from the opening side of the other end, abuts against the inner surface of the wall of the cylindrical material in a region corresponding to a predetermined position, and the predetermined position on the outer surface is set inside. An inner support member, that is, an anvil. A plug support member for supporting a plug supplied from the outside and bringing the bottom of the plug into contact with a predetermined position on the outer surface of a wall of a cylindrical material. When the plug supported by the plug support member is brought into contact with a predetermined position on the outer surface of the wall of the cylindrical material, the bottom is closed by applying ultrasonic waves to the bottom of the plug. Ultrasonic welding means for welding and fixing the bottom of the plug to a predetermined position on the outer surface of the cylindrical material by heating and melting. It consists of the above (refer to Japanese Patent Publication No. 7-98371 as an example).
[0009]
  The first advantage of this proposal is that the faucet can be fixed with high accuracy. The reason is equivalent to the area around the pour spout of the gable roof shape area on the outer surface of the cylindrical material to which the plug is attached, compared to the conventional heat seal method that attaches the plug using the hot air shown above This is because the region around the spout is supported from the inside by an anvil, that is, a container receiving member, so that the region around the spout does not bend inward even if the spout is pressed from the outer surface.
[0010]
  In addition, the second point is that the time required for fixing can be greatly shortened since the stopper is pressed and fixed while being heated and melted with ultrasonic waves from a state where the stopper is brought into contact with the region corresponding to the peripheral region of the spout. It is the point which can aim at the remarkable improvement of.
[0011]
  Further, in welding and fixing the plug, the means adopting the conventional heat seal method is treated in a divided manner using a plurality of stations. However, in this proposal, a configuration is adopted in which a filling device configured by continuously combining a large number of work processes is completed in one of the many work processes or in two stations (work processes). Therefore, it is possible to reduce the size of the device and simplify the system at once.
[0012]
  The third point is that the bottom of the plug is heated and melted by ultrasonic waves, and the bottom of the plug is welded and fixed to the outer surface of the cylindrical material. Before filling the container with the filler, By adopting a means in which the stopper is attached in advance, the inconvenience of causing deterioration of the filling material is solved.
[0013]
  By the way, in this new proposal, an ultrasonic welding means comprising a horn portion formed in a cylindrical shape and communicating with a vacuum source on the bottom surface of the horn portion serves as a support member for holding the plug. Was played. That is, using the opening at the tip of this horn part, the cap of the cap with cap is inserted here, and when the plug is inserted, the vacuum source works and the outside of the cap with cap The flange is sucked and supported at the tip of the horn part in a state where the flange is in contact with the tip surface of the horn part.
[0014]
  The present inventor has conducted intensive research to further improve this new proposal, and has developed a novel spout plug attachment device that is simple, accurate, and accurate in supplying, supporting and positioning the plug. I have made a proposal here.
[0015]
  The present invention comprises a container receiving member inserted into a container from an upper end opening of a cylinder that is folded and sealed and has a flat bottom, and an ultrasonic welding means disposed opposite to the container receiving member. A spout plug attachment device which is fixed by ultrasonic welding means while pressing the cap on a predetermined position on the outer surface of the container, and is provided with a supply, support and positioning of the plug It is an object of the present invention to be simple, accurate, accurate, and combined into a simple configuration.
[0016]
[Means for Solving the Problems]
  The stopper support means for receiving and holding the stopper and transporting it to a predetermined position on the outer surface of the container successfully utilizes the characteristics of the outer shape of the stopper. In other words, the seed spout stopper is formed of a synthetic resin material.So, bulletNeedless to say, the flange protrudes greatly outward in the radial direction of the plug body, the front surface and the back surface (bottom) are smooth surfaces, and the molding process is easy. It is configured to be held mainly by utilizing the vibration horn of the ultrasonic welding means.
  In other words, the stopper is received and held and transported to a predetermined position on the outer surface of the container. The holding means has an insertion hole sufficient to allow the flange of the cap to be inserted, and an inner surface of the insertion hole is provided with a locking claw at a predetermined interval, and the center of the insertion hole from the protruding end of the claw The size of the flange is set to be smaller than the radius of the flange, and the flange is forced to move to the ultrasonic welding means side beyond the locking claw by elastic deformation of the flange of the plug. In addition, the flange is sandwiched between the tip of the vibration horn of the ultrasonic welding means and the locking claw.
[0017]
  According to this means, it is provided on the support means of the plug by making use of the elastic deformation of the flange.ClerkUsing a pawl, the flange can be clamped together with the vibration horn to accurately and easily hold it.Can.
[0018]
  Therefore, this invention has the following effects.
  First, the present invention basically has the following four effects.
  That is, the first point is that a portion corresponding to the spout peripheral region of the gable roof-shaped region on the outer surface of the container to which the stopper is attached is supported from the inside by the anvil, that is, the container receiving member. Therefore, even if the spout is pressed from the outer surface, the spout peripheral area does not bend inward, and the spout can be fixed with high accuracy.
[0019]
  The second point is that the spout is brought into contact with the region corresponding to the area surrounding the spout, and from this state, the heat is melted and pressed and fixed, so that the time required for fixing can be greatly shortened. The efficiency can be greatly improved.
[0020]
  Furthermore, the third point is that, when the plug is welded and fixed, the means adopting the conventional heat sealing method is provided with a plurality of stations in a divided manner. However, in this proposal, a configuration that is completed in one or two stations (work processes) of many work processes of a filling apparatus configured by continuously combining a large number of work processes is adopted. . Therefore, the downsizing of the apparatus and the simplification of the system can be achieved at once.
[0021]
  And, the fourth point is a means for heating and melting the bottom of the spout with ultrasonic waves before filling the liquid into the container, and welding and fixing the bottom of the spout to the outer surface of the container, and pre-attaching it. Has been adopted. As a result, the inconvenience of causing the quality change of the packing is eliminated.
[0022]
  And this invention has the following effects especially.
  That is, the present invention, together with the ability to mechanically support the plug,BulletClamping by making good use of the essential characteristics of the plug, such as sexual deformation and the smooth surface of the flangeThatSupport means are employed. Therefore, the supply, support and positioning of the plugs are simple, accurate and accurate, and can be combined into a simple configuration.
[0023]
  In this invention, the stopper supporting means for receiving and holding the stopper and transporting it to a predetermined position on the outer surface of the container mainly utilizes the characteristics of the outer shape of the stopper, and is mainly used for the ultrasonic welding means. In combination with a configuration in which a vibration horn is used to hold the vibration horn of the ultrasonic welding means between the container receiving member and the vibration horn of the ultrasonic welding means, it moves in and out of the reciprocating sliding path of the vibration horn of the ultrasonic welding means. In addition, it is preferable that a plug supply means for supplying the plug to the plug support means is provided.
  Thus, the provision of the plug supply means makes it possible to supply the plug more easily and accurately, and contribute to automation and labor saving.
[0024]
  Furthermore, in this invention,A plug that moves in and out of the reciprocating sliding path of the vibration horn of the ultrasonic welding means between the container receiving member and the vibration horn of the ultrasonic welding means, and supplies the plug to the plug support means A means for supporting the plug, which is provided with the supply means and receives and holds the plug and transports it to a predetermined position on the outer surface of the container,The plug supply means;,Between the vibration horn of the ultrasonic welding means, The means for supporting this spoutAn insertion hole is provided so that the flange of the plug can be inserted, and an inner surface of the insertion hole is provided with a locking claw at a predetermined interval, and the dimension from the protruding end of the claw to the center of the insertion hole is The flange is set to a size smaller than the radius of the flange, and the flange is inserted into the insertion hole by elastic deformation of the flange of the spigot.,It is configured to forcibly transfer from the plug supply means side to the ultrasonic welding means side beyond the locking claw, and at the same time, the tip of the vibration horn and the locking claw It is preferable that the flange is sandwiched between them.
  Such a configuration in which the plug is held by being held between the locking claw provided on the support means and the tip of the vibration horn can maintain the holding posture accurately and always as expected. As a result, the supply, support, and positioning of the plugs can be performed easily, accurately and accurately, and can be combined into a simple configuration.
[0025]
  Further, the stopper support means includes an arm provided with an insertion hole for receiving and holding the stopper, and a forced pulling means for pulling the arm toward the vibration horn side, and the flange is inserted into the insertion hole by elastic deformation. From the plug supply means side, over the locking claw, to the ultrasonic welding means side, the plug that has been forcibly transferred is pulled to the vibrating horn side by the forced pulling means. Therefore, it is preferable that the flange of the plug is sandwiched between the tip of the vibration horn and the locking claw provided in the insertion hole.
  As described above, when the arm is forcibly pulled toward the ultrasonic welding means, the accuracy of the pinch flange clamping action by the locking claw and the vibration horn provided in the insertion hole is remarkably increased. . As a result, the holding posture is always properly maintained as expected, and the plug supply, support, and positioning are simple, accurate and accurate, and can be combined into a simple configuration. .
[0026]
  Moreover, it is preferable that the plug supply means is configured to be able to move to the vibration horn side after entering the reciprocating sliding path of the vibration horn.
  Thus, the plug supply means is also moved to the vibrating horn side, so that the plug is forcibly pressed against or pressed into the support means. The holding action is more accurately achieved. As a result, the holding posture is always properly maintained as expected, and the plug supply, support, and positioning are simple, accurate and accurate, and can be combined into a simple configuration. .
[0027]
  Furthermore, it is preferable that the means for supporting the plug has the following configuration.
  Both the ultrasonic welding means are configured to be close to and away from the container receiving member in conjunction with the approach and separation of the ultrasonic welding means from the container receiving member. In addition, normally, a predetermined relative distance is maintained from the ultrasonic welding means when the plug is received and held in the intended standby posture, and the stopper support means toward the container receiving member side. After the sliding is prevented, the ultrasonic welding means is slid a predetermined distance toward the container receiving member, and an interlocking means is provided which can narrow the relative distance between the two.
  Thus, when the interlocking means is employed, a series of operations of holding the stopper by the stopper support device, transferring the container to the outer surface of the container, and releasing the holding are performed by the ultrasonic welding means. It is performed in conjunction with a series of operations for fixing and fixing the plug. As a result, the configuration of the apparatus can be greatly simplified.
[0028]
[0029]
  As described above, according to the present invention, since the stopper is always accurately held in a predetermined posture, the reception and subsequent transfer to a predetermined position on the outer surface of the container may cause inconvenience such as dropping of the stopper. It can be performed in a suitable posture preferable for the intended welding and fixing, and welding and fixing can also be performed in a suitable posture. As a result, high-precision welding and fixing became possible.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS.
  FIG. 12 shows an upper part of a carton 2 called a sealed container with a stopper after the stopper 1 is attached by the spout stopper attachment device of the present invention and is filled and sealed by a liquid filling device (not shown). It is shown. The carton after being filled and sealed is formed of a water-resistant square paper tube material by covering the inner and outer surfaces with plastic, and has a rectangular flat bottom. As shown in the figure, the upper part of the carton 2 has a peripheral wall 2A folded into a gable roof shape and sealed by heat welding. A spout 2C is formed on one side of the gable roof-shaped portion 2B, and the spigot 1 is welded and fixed so as to correspond to the spout 2C. The spout 2C is closed by a sealing film 2D attached to the inner surface of the peripheral wall 2A of the carton 2.
[0031]
  In this embodiment, the plug 1 includes a cylindrical plug body 1A and a cap 1B, as shown in FIGS. The cap 1B is screwed into a male screw formed on the outer peripheral surface of the plug body 1A, and can be repeatedly attached to and detached from the plug body 1A. The spout 1 is concentrically welded and fixed to the spout 2C of the container 1. A flange 1C protruding outward is integrally provided at the lower end of the plug body 1A. The bottom of the flange 1 </ b> C is fixed to the peripheral area of the spout 2 </ b> C on the outer surface of the carton 2, thereby achieving the above-described welding fixation.
[0032]
(First embodiment)
  In FIG. 1, although not shown, a container, for example, a rectangular carton 2 is transported in a direction perpendicular to the paper surface by a transport device having a claw. A container receiving member 4 supported by the frame 3, for example, a stainless steel square tube anvil, is fixed above the conveying device.
[0033]
  An ultrasonic welding device 5 as a spout welding means for the spout 2C is disposed on the side of the container receiving member 4 and on the right side in the figure. The ultrasonic welding apparatus 5 includes a vibration horn 6 projecting toward the container receiving member 4 and a support frame 7 that supports the vibration horn 6. Then, while being guided by a linear guide path 8 provided below, it is driven by a driving device (not shown) to slide back and forth in the direction of arrow A-A ′. In other words, the container receiving member 4 is configured to approach or separate from a straight line. Further, an opening 6 </ b> A is provided at the tip of the vibration horn 6. The opening 6A is set such that its inner diameter is slightly larger than the outer diameter of the cap 1B of the plug 1 and its depth is slightly larger than the height of the cap 1B.
[0034]
  Between the container receiving member 4 and the support frame 7, a plug supply device 9 as supply means for the plug 1 in order from the container receiving member 4 side toward the ultrasonic welding device 5 side, A plug support device 10 as a support means of the plug 1 is provided.
[0035]
  The plug supply device 9 is provided in the reciprocating sliding path of the vibration horn 6 so as to be able to move out and out of the path. The free end (lower end) is provided with a holding suction portion 9A for the plug 1 so as to vacuum-suck the plug 1 that is intermittently drawn from the external port plug supply chute. It is configured. Further, the plug supply device 9 enters the reciprocating sliding path of the vibration horn 6 and then the tip of the vibration horn 6 along the reciprocating sliding direction of the vibration horn 6, that is, the AA ′ direction in the drawing. It can be moved sideways.
[0036]
  The stopper support device 10 receives and holds the stopper 1 adsorbed and held by the stopper supply device 9, and holds the stopper 1 in the carton in which the container receiving member 4 is inserted. 2 to the position corresponding to the outer surface of the predetermined position.
[0037]
  The specific configuration of the plug support device 10 is as shown in FIGS. 1 and 2 and includes the following configuration. That is, the free end has an arm 12 provided with a round hole 11 as an insertion hole having a diameter slightly larger than the diameter of the flange 1C of the plug 1. The lower part of the arm 12 is supported by a guide rail 14 provided on the arm support frame 13. The arm support frame 13 is reciprocated in association with the ultrasonic welding device 5 in the direction along the reciprocal sliding path of the vibration horn 6. The arm 12 is also supported by the guide rail 14 so as to be capable of reciprocating sliding in the direction along the reciprocating sliding path of the vibrating horn 6. The reciprocating sliding guide of the arm 12 in the direction along the reciprocating sliding path of the vibration horn 6 is a fluid pressure cylinder 15 arranged on the ultrasonic welding device 5 side on the arm support base frame 13. Forced by.
[0038]
  Accordingly, the ultrasonic welding device 5 and the arm support base frame 13 both reciprocately slide in the direction of the arrow A-A ′ while being guided by the guide rail 8 disposed at the lower part. That is, the container receiving member 4 is configured to approach or move away from a straight line.
[0039]
  An open coil spring 16 is interposed between the ultrasonic welding device 5 and the arm support frame 13. Further, a stopper 17 is provided at a predetermined distance on the container support member 4 side of the arm support frame 13, and the lever support frame 13 toward the container reception member 4 side beyond a certain distance. It is comprised so that sliding of this may be checked.
[0040]
  Further, a stopper 18 is also provided at a predetermined distance on the container receiving member 4 side of the ultrasonic welding device 5, and the ultrasonic welding device 5 has a predetermined distance or more toward the container receiving member 4 side. It is comprised so that sliding may be checked.
[0041]
  The relative arrangement positional relationship between the stoppers 17 and 18 is set under the following conditions. That is, as the ultrasonic welding device 5 slides toward the container receiving member 4 side, the plug support device 10 is also slid toward the container receiving member 4 side. When 12 reaches just before the carton 2 in which the container receiving member 4 is inserted, the arm support frame 13 of the plug support device 10 is brought into contact with the stopper 17 and further toward the container receiving member 4 side. Is prevented from sliding. However, at this time, the ultrasonic welding device 5 is allowed to continue sliding toward the container receiving member 4 side, and further slides a predetermined distance toward the container receiving member 4 side. When the tip of the vibration horn 6 comes close to the dimension corresponding to the thickness of the flange 1C of the plug 1 from the outer surface of the carton 2, it comes into contact with the stopper 18 and slides toward the container receiving member 4 side. Is configured to be prevented. The difference in sliding amount between the ultrasonic welding device 5 and the plug support device 10 is configured to be generated by compressing the open coil spring 16 interposed between the two devices.
[0042]
  As shown in FIG. 2, a plurality of (three in the illustrated example) locking claws 20 protrude from the inner surface of the round hole 11 provided in the arm 12 at predetermined intervals in the circumferential direction. . The dimension from the protruding end of the locking claw 20 to the center of the round hole 11 is set to be slightly smaller than the radius of the flange 1C of the plug 1. With this configuration, due to the elastic deformation of the flange 1 </ b> C of the plug 1, the flange 1 </ b> C moves through the round hole 11 from the plug supply device 9 side of the plug 1 to the locking claw 20. Over and over to the ultrasonic welding apparatus 5 side.
[0043]
  Next, the operation of the first embodiment will be described.
  First, as shown in FIG. 1, a container receiving member 4 is inserted into the opening of the carton 2 whose upper side is opened. Although not shown, the carton 2 is sealed by being folded into a flat square shape at the bottom and not filled with a filling such as a liquid. The container receiving member 4 is in contact with a sealing film 2D attached to the inner surface of the carton 2 in order to close the spout 2C of the carton 2. Therefore, the inner surface of the carton 2 is supported by the container receiving member 4 through the sealing film 2D in the peripheral region of the spout 2C. In the figure, a two-dot chain line shown at the upper part of the peripheral wall 2A of the carton 2 is a bracing line when folded into a gable roof shape to seal the upper part of the carton.
[0044]
  As a means for fitting the container receiving member 4 into the upper opening of the carton 2, the carton 2 is approached from below with respect to the container receiving member 4 fixedly installed at a predetermined position. On the contrary, it is performed when the container receiving member 4 approaches from above the carton 2 that does not move in the vertical direction, and further when the carton 2 and the container receiving member 4 approach each other. Any means can be adopted. At this time, the ultrasonic welding device 5 and the stopper support device 10 are both farthest from the container receiving member 4 and maintained in the intended standby posture, as shown in FIG. .
[0045]
  Next, as shown in FIG. 3 and FIG. 4, the plug supply device 9 with the plug 1 sucked and held at the lower end is lowered by the drive device outside the figure and is inserted into the reciprocating sliding path of the vibration horn 6. It descends to a predetermined position, that is, a position corresponding to the vertical height corresponding to the round hole 11 provided in the arm 12 of the plug support device 10. When the lowering operation is completed, the plug supply device 9 next moves the tip end side of the vibration horn 6 along the reciprocating sliding direction of the vibration horn 6, that is, along the AA ′ direction in the drawing. Move sideways toward. Then, the spigot 1 is inserted into the round hole 11 of the arm 12 in order from the cap 1B side. By further insertion, the flange 1C is caught on the side surface of the locking claw 19 on the container receiving member 4 side, but the insertion operation is further continued. Finally, the flange 1C is moved to the tip side of the vibration horn 6 over the locking claw 19 while elastically deforming the edge of the flange 1C. Here, the lateral movement of the plug supply device 9 is stopped, the plug adsorbing operation is ended, and the plug 1 is received and held in the round hole 11.
[0046]
  As soon as the insertion of the plug 1 into the round hole 11 is completed, the fluid pressure cylinder 15 is operated without losing the machine, and the arm 12 is moved to the tip side of the vibration horn 6 as shown in FIG. It is forcibly drawn. By this operation, the tip of the vibration horn 6 is inserted into the round hole 11, and the cap 1 </ b> B is inserted into the opening 6 </ b> A provided at the tip of the vibration horn 6. Finally, the vibration horn 6 is slid at the tip of the vibration horn 6 until the vibration horn side surface of the flange 1C is pressed. As a result, the plug 1 is received and held in a form in which the flange 1C is firmly held between the locking claw 19 and the tip of the vibration horn 6 in the round hole 11, as shown in FIG. Will be. Therefore, the holding posture of the spigot 1 is remarkably accurate, and is maintained in a preferable posture sufficient to achieve the intended purpose.
[0047]
  The posture in which the plug 1 is supplied is such that the axis of the plug 1 is in the horizontal direction and the flange 1C is in the vertical direction, as shown in FIGS.
[0048]
  When the acceptance of the plug 1 is completed, the plug supply device 9 is retracted out of the reciprocating sliding path of the vibration horn 6 by an unillustrated driving device. Subsequently, the ultrasonic welding device 5 is slid toward the container receiving member 4 side by the action of the driving device (not shown). As the ultrasonic welding device 5 slides, both of the plug support devices 10 through the open coil springs 16 have the relative intervals shown in FIG. While being kept, it is slid toward the container receiving member 4 side.
[0049]
  When the plug support device 10 slides a predetermined distance, it comes into contact with the stopper 17 and the sliding is prevented. The position where the sliding is prevented is a position where the arm 12 of the spigot support device 10 is substantially in contact with the outer surface of the carton 2. However, since the ultrasonic welding device 5 is not yet in contact with the stopper 18, it continues to slide toward the container receiving member 4 side.YouThe By sliding the ultrasonic welding device 5 at this time, the open coil spring 16 interposed between the plug support device 10 is pressed and compressed. As a result, the relative distance between the ultrasonic welding device 5 and the plug support device 10 when the standby position is in the narrowed state is reduced. Therefore, as shown in FIG. 7, the vibrating horn 6 is engaged with the flange 1C of the spigot 1 in the round hole 11 as it is, pressing the flange 1C toward the container receiving member 4 side as it is, and elastically deforming the flange 1C again. With the pawl 19 unlocked, the spout 1 is pushed out to the carton 2 side, and the bottom of the flange 1C of the spout 1 is placed on the outer surface of the carton 2 while being concentrically disposed with respect to the spout 2C. It is brought into contact with the spout peripheral area. At this time, since the area around the spout 2C on the inner surface of the carton 2 is supported by the container receiving member 4 via the sealing film 2D, the area around the spout 2C of the carton 2 is bent inward and curved. There is no fear. Therefore, the contact pressure of the bottom of the flange 1C of the stopper 1 to the spout peripheral region on the outer surface of the carton 2 is uniform over the entire bottom.
[0050]
  The vibration horn 6 is connected to an ultrasonic wave generation source 20 as shown in FIG. When the bottom of the flange 1C of the spigot 1 comes into contact with the spout peripheral area on the outer surface of the carton 2, the ultrasonic wave generation source 20 is activated, and the ultrasonic wave is transmitted to the vibration horn 6 and this vibration is generated. The horn 6 functions as an ultrasonic transducer. As a result, as shown in FIG. 11, the ultrasonic wave transmitted from the tip of the vibrating horn 6 instantaneously heats and melts the bottom of the flange 1 </ b> C and the plastic coating around the spout on the outer surface of the carton 2. Therefore, the flange 1 </ b> C of the spout 1 is welded and fixed to the spout peripheral area on the outer surface of the carton 2. The flange 1C of the spigot 1 that is in contact with the peripheral area of the spout on the outer surface of the carton 2 with a uniform contact pressure over the entire bottom is welded and fixed sufficiently firmly to the peripheral area of the spout on the outer surface of the carton 2. Will be.
[0051]
  After a predetermined time necessary for the flange 1C of the spigot 1 to be welded and fixed to the spout peripheral region on the outer surface of the carton 2 by ultrasonic heating and melting, the ultrasonic source 20 to the vibrating horn 6 is passed. The transmission of ultrasonic waves is stopped. Then, the ultrasonic welding device 5 is slid by the unillustrated driving device so as to separate the tip of the vibration horn 6 from the plug 1 and waits for the next plug 1 to be supplied. It will be returned to the position.
[0052]
  Further, prior to the sliding return of the ultrasonic welding device 5 to the desired standby posture, first, as the arm support base frame 13 is retracted, the open coil spring 16 is also subjected to its elastic repulsion. Return to the no-load posture in the waiting posture of the initial period. And it works so that the relative space | interval of this ultrasonic welding apparatus 5 and the spigot support apparatus 10 may be returned to the space | interval at the time of an expected stand-by posture. In this way, the ultrasonic welding device 5 and the plug support device 10 are both returned to the intended posture of receiving and holding the plug 1.
[0053]
  In the first embodiment, the insertion hole of the plug 1 provided on the arm 12 of the plug support device 10 is indicated by the round hole 11. However, the hole is not necessarily a round hole, and a triangular, square, or more polygonal hole can also be adopted. In short, any shape and structure are included as long as the hole is provided with a locking claw having the above-described dimensional relationship with the flange 1C of the plug 1.
[0054]
  Further, in order to prevent the stopper support device 10 from sliding toward the container receiving member 4 side, a stopper 17 as shown in the figure is employed. However, instead of the stopper 17, the container receiving member 4 may be inserted so that the arm 12 is brought into direct contact with the outer surface of the carton 2 in the posture of FIG. 1. That is, this arm 12 is made to function as a substitute for the stopper 17.
[0055]
  Further, in the first embodiment, the plug 1 is connected to the plug support device in association with the operation of lateral movement after the plug supply device 9 enters the reciprocating sliding locus of the vibration horn 6. It is comprised so that it may fit in the insertion hole 11 of this. However, the action brought about by the lateral shift of the plug supply device 9 can also be used for the fluid pressure cylinder 15 that holds the force of the arm 12 toward the ultrasonic welding device 5 side. That is, the plug supply device 9 is configured so as to stop only for the reciprocating sliding trajectory of the vibration horn 6. Then, the action brought about by the lateral transition is provided by configuring the arm 12 to be slid on the side of the plug supply device 9 by the operation of the fluid pressure cylinder 15. Thereby, the flange 1C of the plug can be elastically deformed so as to be pushed toward the distal end side of the vibration horn 6 beyond the locking claw 19 in the insertion hole 11.
  In this way, the operation system for the plug supply device 9 can be simplified. However, the timing of releasing the plug adsorbing of the plug supplying device 9 needs to be slightly delayed from the conditions made in the description of the above action. That is, it is preferable that the operation of sucking the plug is continued until the tip of the vibration horn 6 is brought into contact with the surface of the flange 1C.
[0056]
(Second Embodiment)
  As an alternative to the plug support device 10 shown in the first embodiment described above, an alternative structure as shown in FIGS. 8 and 9 can also be adopted. Although the effect is the same as that of the first embodiment, there is an effect that the structure is remarkably simplified.
  In the second embodiment, the plug 1 is held at the tip of the vibration horn 6 of the ultrasonic welding device 5 by vacuum suction means. That is, a plurality of suction ports 22 are opened at predetermined intervals in the circumferential direction at the distal end of the distal end peripheral wall 21 of the vibration horn 6. Each suction port 22 is connected to a suction path 23 provided through the tip peripheral wall 21 of the vibration horn 6, and further, these suction paths 23 are connected to a vacuum source 24. .
[0057]
  Thus, even when the flange 1C is sucked by the plurality of suction ports 22, even if the flange 1C is partially uneven or bent, the entire circumference of the flange 1C is not tightly attached to the tip of the vibration horn 6. Enables good suction retention. Accordingly, the holding performance is remarkably improved as compared with suction holding by a single suction port, and the holding posture of the plug 1 is remarkably accurate and sufficiently preferable to achieve the intended purpose. Will be kept.
[0058]
  Needless to say, in the case of the second embodiment, the plug support device 10 employed in the first embodiment is unnecessary, and the plug supply device 9 and the ultrasonic welding device 5 Since the intended purpose is achieved, the overall structure becomes much simpler and contributes to energy saving.
[0059]
  Of the configurations shown in FIG. 8, the plug supply device 9 and the ultrasonic welding device 5 having the same configuration as the configuration of the first embodiment and the container receiving member 4 are specifically described. Since the structure and operation are the same as those of the first embodiment, the same reference numerals are given and the detailed description of the structure is omitted.
[0060]
(Third embodiment)
  As an alternative to the plug support device 10 shown in the first or second embodiment described above, an alternative structure shown in FIG. Although the effect is the same as that of the first embodiment, there is an effect that the structure is remarkably simplified.
  In the third embodiment, the plug 1 is intended to be inserted and held directly at the tip of the vibration horn 6 of the ultrasonic welding device 5. In other words, the opening 6A provided at the tip of the vibration horn 6 and the flange 1C of the plug 1 are formed at the base of the flange 1C and project outward in the radial direction from the center of the plug 1 to the protruding end. The locking projection 1D has a radius that is set to a size slightly larger than the radius of the opening 6A. The plug supply device 9 allows the plug 1 to be inserted into the opening 6A while elastically deforming the protruding end of the locking projection 1D.
[0061]
  According to such a means, it is possible to hold the flange 1C satisfactorily regardless of the presence or absence of partial unevenness or bending. Therefore, the holding performance is further enhanced as compared with the suction holding, and the holding posture of the plug 1 is remarkably accurate, and is maintained in a preferable posture sufficient to achieve the intended purpose.
[0062]
  Needless to say, even in the case of the third embodiment, the plug support device 10 employed in the first embodiment is unnecessary. Since the plug supply device 9 and the ultrasonic welding device 5 achieve the intended purpose, the overall structure becomes much simpler and contributes to energy saving.
[0063]
  In each embodiment mentioned above, the case where sealing film 2D which seals spout 2C of carton 2 was stuck on the inner surface of carton 2 was illustrated. However, when the sealing film 2D is strongly adhered to the bottom of the flange 1C of the spigot 1 and the sealing film 2D is welded together with the bottom to the spout peripheral region of the outer surface of the carton 2. Is also applicable. In addition, near the bottom of the spigot body 1A, a spout with a closure lid that can be broken to open the spout in use, or a spout 2C of the carton 2 with the opening operation of the cap. A plug provided with a cutting blade body for cutting the sealing film 2D for sealing can also be adopted. Needless to say, it is essential that all of these have flanges.
[0064]
  Further, in each of the above-described embodiments, the case where the plug 1 is welded and fixed from the outside of the carton 2 is illustrated. However, the present invention is not employed exclusively for this so-called external system, and although not shown, it is also characterized in that it can be used in combination with a conventional internal system. That is, as an example, the structure is as shown in Japanese Patent No. 2503470. That is, the plug is inserted into the spout from the inside of the carton and temporarily attached, and this is simply attached to the means for fixing to the container by welding means, so that both the inner and outer types are filled with one liquid. Coexistence with the apparatus can also be easily adopted. In this case, it is possible to adopt means for coexisting in one station and means for attaching to two stations before and after in the process. In any case, since the delivery position from the tip of the plug supply chute of the plug supply device to the plug receiving means is different between the internal and external attachments, this plug supply chute has both types of plug reception. Needless to say, it is necessary to adopt a configuration capable of changing the position of the means.
[0065]
  In this way, by combining both the inner and outer systems, it is possible to further improve the efficiency of attaching the spigot, and at the same time, improve the energy and resource savings, which can greatly contribute to the cost reduction of the product. .
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view schematically showing an entire structure of a device according to a first embodiment of a spout stopper mounting device.
FIG. 2 explains the relative relationship between the structure of the insertion hole formed in the arm of the plug support device of FIG. 1 and the plug received therein, (A) is an enlarged side view of the main part, B)ThatIt is an expanded sectional view of the principal part.
FIG. 3 is an explanatory view of the action.
FIG. 4 is an explanatory diagram of the action.
FIG. 5 is an explanatory view of the action.
FIG. 6 is an explanatory view of the action.
FIG. 7 is an explanatory view of the operation, and is a cross-sectional view of a main part illustrating a state in which the plug is welded and fixed at a predetermined position on the outer surface of the carton by the ultrasonic welding means.
FIG. 8 is a partially cutaway front view schematically showing a main part of the apparatus, showing a second embodiment of a spout plug attaching means.
9 is an enlarged cross-sectional view illustrating a main part of the stopper support means of FIG.
FIG. 10 is a cross-sectional view illustrating a third embodiment and illustrating an enlarged main part of the plug support means.
FIG. 11 is a partially cutaway enlarged cross-sectional view of the main part for explaining the relative positions of the vibrating horn, the plug, the carton and the anvil when the plug is welded and fixed to the outer surface of the carton.
FIG. 12 schematically shows the upper part of a container with a stopper after the stopper is welded and fixed at a predetermined position on the outer surface of the carton by an ultrasonic welding apparatus, and the filler is filled and sealed. FIG.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 1 ... Mouth plug, 1A ... Mouth plug body, 1B ... Cap, 1C ... Flange, 1D ... Locking protrusion, 2 ... Container, 2A ... Perimeter wall, 2B ... Gable roof shape part, 2C ... Spout, 2D ... Sealing film DESCRIPTION OF SYMBOLS 4 ... Container receiving member, 5 ... Ultrasonic welding means, 6 ... Vibrating horn, 6A ... Opening, 9 ... Plug support means, 10 ... Plug support means, 11 ... Insertion hole, 12 ... Arm, 16 ... Open coil spring , 19 ... locking claw, 22 ... suction port.

Claims (5)

折り畳み封止されて平坦な底を有した筒の上端開口から、この容器内に挿入される容器受け部材と、この容器受け部材に対向して配置された超音波溶着手段とを備え、容器の外表面の所定の位置に口栓を押し付けながら、これを超音波溶着手段によって、固着させるようにした注出口栓の取付装置であって、口栓を受入れ保持して、これを容器の外表面の所定の位置に運ぶ、口栓の支持手段が、口栓のフランジが挿通できるに足る挿通穴を備えるとともに、この挿通穴の内面には、所定間隔で係止爪が設けられていて、この爪の突出端から前記挿通穴の中心までの寸法が、前記フランジの半径よりも小さな寸法に設定され、口栓のフランジの弾性変形によって、このフランジが、この係止爪を越えて超音波溶着手段側に強制的に移行されるように構成され、併せて前記超音波溶着手段の振動ホーンの先端と、この係止爪との間でフランジが挟持されるように構成されていることを特徴とする注出口栓の取付装置。A container receiving member inserted into the container from the upper end opening of the cylinder which is folded and sealed and has a flat bottom, and an ultrasonic welding means disposed opposite to the container receiving member, An apparatus for attaching a spout stopper, which is fixed by ultrasonic welding means while pressing the stopper on a predetermined position on the outer surface, and accepts and holds the stopper, which is attached to the outer surface of the container. The plug support means to be carried to a predetermined position of the plug has an insertion hole sufficient to allow the flange of the plug to be inserted, and an inner surface of the insertion hole is provided with a locking claw at a predetermined interval. The dimension from the protruding end of the claw to the center of the insertion hole is set to be smaller than the radius of the flange, and this flange is ultrasonically welded beyond the locking claw by elastic deformation of the flange of the plug. It will be forced to move to the means side It is configured, together the the tip of the vibrating horn of the ultrasonic welding means, the mounting device of the spout plug which is characterized by being configured so the flange is sandwiched between the engagement claw. 折り畳み封止されて平坦な底を有した筒の上端開口から、この容器内に挿入される容器受け部材と、この容器受け部材に対向して配置された超音波溶着手段とを備え、容器の外表面の所定の位置に口栓を押し付けながら、これを超音波溶着手段によって、固着させるようにした注出口栓の取付装置であって、前記容器受け部材と、超音波溶着手段の振動ホーンとの間に、前記超音波溶着手段の振動ホーンの往復摺動経路内外に出退して、前記口栓支持手段に口栓を供給する口栓供給手段が配設されているとともに、口栓を受入れ保持して、これを容器の外表面の所定の位置に運ぶ、口栓の支持手段が、前記口栓供給手段と、超音波溶着手段の振動ホーンとの間に配設され、この口栓の支持手段が口栓のフランジが挿通できるに足る挿通穴を備えるとともに、この挿通穴の内面には、所定間隔で係止爪が設けられていて、この爪の突出端から前記挿通穴の中心までの寸法が、前記フランジの半径よりも小さな寸法に設定され、口栓のフランジの弾性変形によって、このフランジが、この挿通穴内を前記口栓供給手段側から、この係止爪を越えて超音波溶着手段側に強制的に移行されるように構成され、併せて前記振動ホーンの先端と、この係止爪との間でフランジが挟持されるように構成されていることを特徴とする注出口栓の取付装置。A container receiving member inserted into the container from the upper end opening of the cylinder which is folded and sealed and has a flat bottom, and an ultrasonic welding means disposed opposite to the container receiving member, while pressing the plugging in position of the outer surface, by ultrasonic welding means which, I attached device der spout plug which is adapted to fix a front SL container receiving member, the vibration of the ultrasonic welding means between horn, said by projecting and retracting the reciprocating sliding path and out of the vibrating horn of the ultrasonic welding means, together with the spout supply means for supplying a plugging is arranged in the spout support means, the mouth A stopper supporting means for receiving and holding the stopper and transporting it to a predetermined position on the outer surface of the container is disposed between the stopper supplying means and the vibration horn of the ultrasonic welding means. The plug support means has an insertion hole that allows the flange of the plug to be inserted. In addition, locking claws are provided at predetermined intervals on the inner surface of the insertion hole, and the dimension from the protruding end of the claw to the center of the insertion hole is set to be smaller than the radius of the flange. By the elastic deformation of the flange of the plug, the flange is configured to be forced to move from the plug supply means side to the ultrasonic welding means side through the stopper supply means side in the insertion hole, In addition , the spout plug attachment device is configured such that a flange is sandwiched between the tip of the vibration horn and the locking claw . 前記口栓の支持手段は、口栓を受入れ保持する挿通穴が設けられた腕を備えるとともに、この腕を振動ホーン側へ引き寄せる、強制引き寄せ手段を備え、フランジの弾性変形によって、このフランジが、前記挿通穴内を前記口栓供給手段側から、この係止爪を越えて超音波溶着手段側に強制的に移行された後の口栓を、この強制引き寄せ手段で前記腕を振動ホーン側へ引き寄せることによって、この振動ホーンの先端と、前記挿通穴に設けられた係止爪との間で口栓のフランジが挟持されるように構成されている請求項1又は請求項2のいずれかに記載の注出口栓の取付装置。The plug support means includes an arm provided with an insertion hole for receiving and holding the plug, and also includes a forced pulling means for pulling the arm toward the vibration horn side. The plug after forcibly transferred from the plug supply means side to the ultrasonic welding means side in the insertion hole from the plug supply means side is drawn to the vibration horn side by the forced drawing means. Accordingly, the flange of the plug is configured to be sandwiched between the tip of the vibration horn and the locking claw provided in the insertion hole. A spout plug attachment device. 前記口栓供給手段は、前記振動ホーンの往復摺動経路内に突入して後、振動ホーン側にも移行可能に構成されている請求項2又は請求項3のいずれかに記載の注出口栓の取付装置。The spout plug according to any one of claims 2 and 3, wherein the plug supply means is configured to be able to move to the vibration horn side after entering the reciprocating sliding path of the vibration horn. Mounting device. 前記口栓の支持手段は、前記超音波溶着手段に対して、この超音波溶着手段の前記容器受け部材に対する接近離間の作動に連動して、共に前記容器受け部材に対して、接近離間自在に構成されているとともに、常時は、口栓受入れ及び保持の所期の待機姿勢にある時の前記超音波溶着手段との所定の相対間隔が保持され、且つ、この口栓の支持手段の前記容器受け部材側への摺動が阻止された後は、前記超音波溶着手段が所定距離この容器受け部材側へ摺動して、両者の相対間隔を狭めることができる連動手段が設けられている請求項1乃至請求項3のいずれかに記載の注出口栓の取付装置。 The support means for the plugs can be moved toward and away from the container receiving member in conjunction with the operation of moving the ultrasonic welding means toward and away from the container receiving member. In addition, the container is normally maintained at a predetermined relative distance from the ultrasonic welding means when the plug is in a standby posture for receiving and holding the plug, and the stopper is supported by the container. After the sliding to the receiving member side is prevented, there is provided an interlocking means capable of narrowing the relative distance between the ultrasonic welding means by sliding to the container receiving member side by a predetermined distance. The spout stopper attachment device according to any one of claims 1 to 3.
JP05618798A 1998-02-19 1998-02-19 Outlet plug mounting device Expired - Fee Related JP3656393B2 (en)

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JP05618798A JP3656393B2 (en) 1998-02-19 1998-02-19 Outlet plug mounting device

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JP3656393B2 true JP3656393B2 (en) 2005-06-08

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Publication number Priority date Publication date Assignee Title
ES2224966T3 (en) * 2000-05-23 2005-03-16 Societe Des Produits Nestle S.A. A SET WITH A BAG AND AN ACCESSORY, AS WELL AS A PROCEDURE FOR MANUFACTURING.
WO2003104090A1 (en) * 2002-06-05 2003-12-18 International Paper Company Container patch and method of formation
JP5616679B2 (en) * 2010-04-30 2014-10-29 株式会社フジシールインターナショナル Sealing device for bag making machine
DE102013202766A1 (en) 2013-02-20 2014-08-21 Ms Spaichingen Gmbh Rundsonotrode
CN117359950B (en) * 2023-12-05 2024-02-13 东风亚普汽车部件有限公司 Welding device for oil tank filling pipe

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