JP4034863B2 - Heat sealing device for automatic packaging machine - Google Patents

Heat sealing device for automatic packaging machine Download PDF

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Publication number
JP4034863B2
JP4034863B2 JP34454097A JP34454097A JP4034863B2 JP 4034863 B2 JP4034863 B2 JP 4034863B2 JP 34454097 A JP34454097 A JP 34454097A JP 34454097 A JP34454097 A JP 34454097A JP 4034863 B2 JP4034863 B2 JP 4034863B2
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Japan
Prior art keywords
heat seal
rolls
roll
pair
horizontal
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JPH11165714A (en
Inventor
堅互 間宮
直樹 川見
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Sanko Machinery Co Ltd
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Sanko Machinery Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint 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
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/816—General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8223—Worm or spindle mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8416—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
    • B29C66/92611—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by controlling or regulating the gap between the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9261—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools
    • B29C66/92651—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the displacement of the joining tools by using stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/816—General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Package Closures (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、自動包装機に用いて好適なヒートシール装置に関するものであって、具体的には、包装フイルムに横シールを施す横ヒートシール装置に関するものである。
【０００２】
【従来の技術】
自動包装機に用いる包装フイルムは、その品質や材質等の各種要素によって厚さと性状が異なるため、この厚さと性状が異なる包装フイルムを、対向して回転する一対の横ヒートシールロールの間で挟圧して横シールするように構成したダイロールシール方式の自動包装機に用いる場合は、包装フイルムの種類に合せて横ヒートシールロールの間隔を調節する必要があった。
【０００３】
そこで従来は、横ヒートシールロール本体に取付ける横シール部材（シールバー）を任意の厚さ（幅）のものに交換することによって、上記ロール間の間隔を調節していた。
【０００４】
図３と図４は上記従来の構造を説明した断面図と分解斜視図であって、図中、Ｆは包装品、ＹとＸは左右一対の横ヒートシールロールで、ＹＡとＸＡはそのロール本体、ＹＤとＸＤはロール本体ＹＡ，ＸＡの回転軸、ＳＨは横シール部、ＹＢとＸＢは各ロール本体ＹＡ，ＸＡの両端部に夫々取付けた軸間基準フランジ、ＹＣ…とＸＣ…は両ロール本体ＹＡ，Ｘの周面に形成した取付溝に嵌込んで取付けるシールバーで、このシールバーＹＣとＸＣを交換することによって横ヒートシールロールＹ，Ｘ間の間隔Ｈを調節する仕組に成っている。
【０００５】
しかし、上記シールバーＹＣ，ＸＣを交換して横ヒートシールロールＹ，Ｘ間の間隔Ｈを調節する構造のものは、間隔Ｈを調節する度に横ヒートシールロールＹ，Ｘを包装機側から取外して各シールバーＹＣ，ＸＣを交換しなくてはならないため、調節作業が非常に面倒で手間と時間が掛る問題があった。
【０００６】
これに対して、例えば特開平１−２３８９２２号公報の第８図及び特開平４−１１４８４１号公報の第２図に記載されているヒートシール装置は、一対の横ヒートシールロールのうち、一方を固定式に、他方を可動式に構成して、この可動式に構成した他方の横ヒートシールロールをアジャストボルト或はシリンダ機構を用いて移動調節することによって、横ヒートシールロールＹ，Ｘの間隔Ｈを調節するものであって、間隔調節を比較的簡単に行える特徴を備えている。
【０００７】
【発明が解決しようとする課題】
ところが、上記従来のヒートシール装置は、いずれもアジャストボルト或はシリンダ機構をマニュアル操作して、間隔Ｈを殆ど作業者の勘を頼りに調節するものであるから、包装フイルムの厚さである数μ〜十数μの極めて精密な間隔（クリアランス）調節を充分な精度にて行うことが甚だ困難であると共に、調節には可成りの時間が掛る問題があり、間隔調節を終えた後であっても、暫時試しシールを続けながら実寸法と横シールの具合を監視して微調節を繰返す必要があるため、その間、包装フイルムや充填材料（被包装材料）が可成りの量無駄に消費されてしまう不経済性もあった。
【０００８】
従って本発明の技術的課題は、ダイロールシール方式の自動包装機に於いて、一対の横ヒートシールロールの間隔（クリアランス）を、包装フイルムの品種や厚さ、或は、材質等の要素毎に予め設定したプログラムに従って、数値制御によってワンタッチで正確に調節することである。
【０００９】
【課題を解決するための手段】
上記の技術的課題を解決するために本発明で講じた手段は以下の如くである。
【００１０】
包装フイルムを、対向して回転する一対の横ヒートシールロールの間で挟圧して横シールするように構成したダイロールシール方式の自動包装機であって、
【００１１】
前記一対の横ヒートシールロールのうち、少なくとも一方を固定構造にして他方を可動構造にし、この他方の横ヒートシールロールを可動自在に支えるガイド部材の一側面に対して、モータの回転に従って進退螺動自在に螺装した調節ネジ軸を当接させて一対の横ヒートシールロール間の間隔を設定すると共に、他方の横ヒートシールロールを可動自在に支えるガイド部材の他側面に対して、調節ダイヤルと加圧バネを当接させて可動側横ヒートシールロールを固定側横ヒートシールロールに押圧するように構成し、 前記一対の横ヒートシールロールを用いて横シール動作を行う際は、包装フイルムの品質、厚さ、材質等の各要素に基づいた数値制御プログラムが上記モータを回転させて、横ヒートシールロール間の間隔が設定されると共に、この設定された間隔が変化することなく、加圧バネの加圧移動によって発生する間隔が加わるように動くこと。
【００１２】
上記請求項１に係る手段によれば、メモリに記憶したプログラムを呼び出すことによって、一対の横ヒートシールロールの間隔を、使用する包装フイルムの品種、厚さ、材質等の要素に合った間隔に短時間で自動的に、且つ、正確に調節することができるものであって、間隔調節の簡略化と、試しシールによる包装フイルムと充填材料の無駄な消費を可及的に少くすることを可能にする。
【００１３】
即ち、請求項１に係る手段によれば、プログラムに従って数値制御されるモータが調節ネジ軸を作動することによって、可動側横ヒートシールロールを固定側横ヒートシールロールに対して接離方向に移動させて、これ等一対の横ヒートシールロールの間隔を使用する包装フイルムに合った間隔に自動調節することを可能にする。
【００１４】
更に、上記請求項１に係る手段によれば、包装フイルムの厚さが増えても、両横ヒートシートロールの設定間隔は変わらずに、加圧バネが圧縮されて両横ヒートシールロールの間隔を広げることができるため、ロール圧着力を包装フイルムの厚さに合わせて変化させることができる。
【００１５】
以上の如くであるから、上記の手段によって上述した技術的課題を解決して、前記従来の技術の問題点を解消することができる。
【００１６】
【発明の実施の形態】
以下に、上述した本発明に係る自動包装機用ヒートシール装置の実施の形態を図面と共に説明すると、図１は本発明の全体を一部を断面にして示した構成図、図２はその要部の側断面図を示したものであって、これ等の図面に於いて夫々符号１と２で全体的に示したのは一対の横ヒートシールロールで、１Ａと２Ａはそのロール本体、１Ｂ，１Ｂと２Ｂ，２Ｂは各ロール本体１Ａ，２Ａの両端部側に取付けた軸間基準フランジ、１Ｃ…、２Ｃ…は各ロール本体１Ａ，２Ａの周面に等間隔に取付けたシールバー、１Ｄと２Ｄは各ロール本体１Ａ，２Ａの両端部軸方向に突設した回転軸で、図示の場合は一方の横ヒートシールロール１が固定構造で、他方の横ヒートシールロール２が可動構造に成っている。
【００１７】
また、３は自動包装機（図示せず）側の固定フレーム、１Ｅ，１Ｅは取付部材６，６を介して固定フレーム３に取付けた固定式軸受で、これ等固定式軸受１Ｅ，１Ｅの間に上記固定構造と成る一方の横ヒートシールロール１の回転軸１Ｄ，１Ｄが回転自在に支持されている。
【００１８】
２Ｅ，２Ｅは自動包装機のフレーム（（図示省略）に上記固定式軸受１Ｅ，１Ｅに対して移動自在（接離自在）に取付けた可動式軸受で、これ等可動式軸受２Ｅ，２Ｅの間には上述した可動構造と成る他方の横ヒートシールロール２の回転軸２Ｄ，２Ｄが回転自在に支持され、また、各可動式軸受２Ｅ，２Ｅにはその移動をガイドするためのガイド部材７，７が取付けられている。
【００１９】
５，５は、その各先端部５ａ，５ａを上記可動式軸受２Ｅ，２Ｅの一側面（具体的にはガイド部材７，７の一側面）に夫々当接するように、自動包装機の固定フレーム４，４又は上述した取付部材６，６のいずれかに進退螺動自在に螺装した調節ネジ軸で、１０Ｍ，１０Ｍは軸継手（図示省略）を介して各調節ネジ軸５，５に接続したサーボモータの如きモータ、１１はこれ等モータ１０Ｍ，１０Ｍを取付けた支持台である。
【００２０】
８，８は自動包装機の固定フレーム９，９に取付けた調節ダイヤルで、この調節ダイヤル８，８の先端部と、上述した各可動式軸受ダイヤル２Ｅ，２Ｅの他側面（具体的にはガイド部材７，７の他側面）との間には、可動式軸受２Ｅ，２Ｅを常時固定式軸受１Ｅ，１Ｅの方向に加圧移動させる加圧バネ８Ｓ，８Ｓが介在されていて、上述した各モータ１０Ｍ，１０Ｍの正逆回転と上記加圧バネ８Ｓ，８Ｓの弾発作用によって、上記各軸受１Ｅ，１Ｅと２Ｅ，２Ｅ間の間隔、具体的には、横ヒートシールロール１，２間の間隔Ｈ（クリアランス）を広挟自在に調節できる仕組に成っている。
【００２１】
尚、上述した調節ダイヤル８，８及び加圧バネ８Ｓ，８Ｓに代えてエアーシリンダやその他のクッション部材を取付けて、可動式軸受２Ｅ，２Ｅを加圧する場合もあって、加圧部材としていずれのものを使用するかは任意とする。
【００２２】
更に図１に於いて、１２はマイクロコンピュータを用いて構成した上記各モータ１０Ｍ，１０Ｍ用の制御部、１３はこの制御部１２に対して上述した間隔Ｈを数値制御するための各種プログラムを入力するためのテンキー等の間隔設定手段、１４はシステムプログラムや各種データ類を記憶するメモリである。
【００２３】
図２に示すように一対の横ヒートシールロール１，２によって挟圧されて横シールＳＨされる包装品Ｆは、使用する包装フイルムの品種や厚さ、或は、材質等の各要素に従って、上記横シール部ＳＨの最も好ましい厚さが夫々異なり、必然的に両横ヒートシールロール１，２間の間隔Ｈも異なるものであるから、本発明では、上記包装フイルムの各要素毎に求められる好ましい間隔Ｈに設定するための数値制御用のプログラムを、予め間隔設定手段１３を用いて制御部１２のメモリ１４（ＲＡＭ）に多数記憶せしめておくことにより、各モータ１０Ｍ，１０Ｍの作動を制御しようとするものである。
【００２４】
そして使用する包装フイルムが決まったら、制御部１２に設けた操作部（図示省略）を操作してその要素に適合した数値制御用プログラムをメモリ１４から選んで呼出し、このプログラムに従って各モータ１０Ｍ，１０Ｍ（回転パルス）を制御作動して各調節ネジ軸５，５を前進又は後退螺動することにより、両横ヒートシールロール１，２の間隔Ｈを使用する包装フイルムに合った最も好ましい状態に自動的に設定することができる。
【００２５】
更に本発明では、上記包装フイルムの厚さが途中で増えた場合には、両横ヒートシールロール１と２の設定間隔を変化させることなく、加圧バネ８Ｓが圧縮されて両横ヒートシールロール１，２の間隔を広げるため、ロール圧着力を包装フイルムの厚さに合わせて変化させることができる。
【００２６】
尚、図面にはモータ１０Ｍ，１０Ｍによって作動される間隔調節部材として調節ネジ軸５，５が記載されているが、これは実施の一例であって、例えば、モータ１０Ｍ，１０Ｍによって回転されるカム円盤のような作動装置を用いて、可動式軸受２Ｅ，２Ｅを押圧移動するように構成してもよく、その選択は任意とする。
【００２６】
【発明の効果】
以上述べた次第で、本発明に係る自動包装機用ヒートシール装置によれば、一対の横ヒートシールロールの間隔を数値制御によって使用する包装フイルムに合った最も好ましい状態に設定することができると共に、包装フイルムの厚さの変化にも、設定間隔を変えずに加圧バネの弾発作用で追従できるものであって、両ロール間の間隔をワンタッチで極めて簡単に、且つ、正確に設定できるため、操作が頗る簡単であり、而かも、包装フイルムの変更時に無駄な試しシールの量を可及的に少くできる経済性も備えるものであって、ダイロールシール方式の自動包装機に実施して洵に好適なものである。
【図面の簡単な説明】
【図１】 本発明に係る自動包装機用ヒートシール装置の全体を一部を断面にして示した構成図である。
【図２】 本発明の要部の断面図である。
【図３】 従来装置の断面図である。
【図４】 従来装置の分解斜視図である。
【符号の説明】
１，２ 一対の横ヒートシールロール
１Ｅ 固定軸受
２Ｅ 可動軸受
５ 調節ネジ
８Ｓ 加圧バネ
１０Ｍ モータ
１２ 制御部
１３ 間隔設定手段
１４ メモリ
Ｈ ロール間隔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat seal device suitable for use in an automatic packaging machine, and specifically to a horizontal heat seal device that performs a horizontal seal on a packaging film.
[0002]
[Prior art]
Since the packaging film used in the automatic packaging machine has different thickness and properties depending on various factors such as quality and material, the packaging film having different thickness and properties is sandwiched between a pair of transverse heat-sealing rolls that rotate opposite to each other. When used in a die roll seal type automatic packaging machine configured to perform horizontal sealing by pressing, it is necessary to adjust the distance between the horizontal heat sealing rolls according to the type of the packaging film.
[0003]
Therefore, conventionally, the interval between the rolls has been adjusted by exchanging a lateral seal member (seal bar) attached to the lateral heat seal roll body with an arbitrary thickness (width).
[0004]
3 and 4 are a sectional view and an exploded perspective view illustrating the above-described conventional structure, in which F is a packaged product, Y and X are a pair of left and right horizontal heat seal rolls, and YA and XA are the rolls. The main body, YD and XD are the rotation shafts of the roll main bodies YA and XA, SH is the horizontal seal portion, YB and XB are inter-axis reference flanges attached to both ends of each roll main body YA and XA, and YC ... and XC ... are both It is a seal bar that fits into the mounting groove formed on the peripheral surface of the roll body YA, X, and is configured to adjust the distance H between the transverse heat seal rolls Y, X by exchanging this seal bar YC and XC. ing.
[0005]
However, in the structure in which the seal bar YC, XC is replaced and the distance H between the horizontal heat seal rolls Y, X is adjusted, the horizontal heat seal rolls Y, X from the packaging machine side each time the distance H is adjusted. Since the seal bars YC and XC have to be removed and replaced, there is a problem that adjustment work is very troublesome and takes time and effort.
[0006]
On the other hand, for example, the heat sealing apparatus described in FIG. 8 of Japanese Patent Laid-Open No. 1-238922 and FIG. 2 of Japanese Patent Laid-Open No. 4-114841 has one of a pair of horizontal heat seal rolls. The distance between the horizontal heat seal rolls Y and X is fixed by making the other movable and adjusting the movement of the other horizontal heat seal roll by using an adjusting bolt or a cylinder mechanism. It adjusts H and has the feature that the interval can be adjusted relatively easily.
[0007]
[Problems to be solved by the invention]
However, the above conventional heat sealing devices are all manually adjusting the adjustment bolt or cylinder mechanism to adjust the interval H with the operator's intuition, so that the number of the packaging film is the number. It is extremely difficult to perform very precise interval (clearance) adjustment between μ and tens of μs with sufficient accuracy, and there is a problem that adjustment takes a considerable amount of time. However, since it is necessary to repeat the fine adjustment by monitoring the actual dimensions and the condition of the horizontal seal while continuing the trial seal for a while, a considerable amount of packaging film and filling material (material to be wrapped) are wasted. There was also uneconomical nature.
[0008]
Therefore, the technical problem of the present invention is that in a die roll seal type automatic packaging machine, the distance (clearance) between a pair of transverse heat seal rolls is determined for each element such as the type, thickness, or material of the packaging film. According to a program set in advance, one-touch accurate adjustment is performed by numerical control.
[0009]
[Means for Solving the Problems]
Means taken in the present invention to solve the above technical problems are as follows.
[0010]
A die roll seal type automatic wrapping machine configured to sandwich and seal a packaging film between a pair of transverse heat seal rolls rotating opposite to each other,
[0011]
Of the pair of horizontal heat seal rolls, at least one is fixed and the other is movable. One side surface of a guide member that movably supports the other horizontal heat seal roll is advanced and retracted as the motor rotates. An adjusting dial is set against the other side surface of the guide member that movably supports the other side heat seal roll while abutting an adjustment screw shaft that is movably screwed to set a distance between the pair of side heat seal rolls. When the transverse sealing operation is performed using the pair of transverse heat seal rolls, the packaging film is used. The numerical control program based on each element such as quality, thickness, material, etc. rotates the motor and sets the interval between the transverse heat seal rolls. Without this set interval is changed, to move to join the spacing generated by the pressure movement of the pressure springs.
[0012]
According to the means according to claim 1, by calling the program stored in the memory, the distance between the pair of transverse heat seal rolls is adjusted to the distance suitable for the factors such as the type, thickness, and material of the packaging film to be used. It can be adjusted automatically and accurately in a short time, simplifying the interval adjustment and minimizing wasteful consumption of packaging film and filling material by trial sealing. To.
[0013]
That movement, according to the means according to claim 1, by the motor actuating the adjusting screw shaft which is numerically controlled in accordance with the program, the contact and separation direction of the movable-side transverse heat seal roll to the fixed side lateral heat seal rolls This makes it possible to automatically adjust the distance between the pair of transverse heat seal rolls to a distance suitable for the packaging film to be used.
[0014]
Furthermore, according to the means according to the first aspect, even if the thickness of the packaging film is increased, the setting interval of the both side heat sheet rolls is not changed, and the pressure spring is compressed and the interval between the both side heat seal rolls is reduced. Therefore, the roll pressing force can be changed according to the thickness of the packaging film.
[0015]
Since it is as mentioned above, the technical problem mentioned above can be solved by the above-mentioned means, and the problem of the above-mentioned conventional technology can be solved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The embodiment of the heat sealing apparatus for an automatic packaging machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a part of the whole of the present invention, and FIG. In these drawings, reference numerals 1 and 2 generally indicate a pair of transverse heat seal rolls, 1A and 2A being the roll body, 1B , 1B and 2B, 2B are inter-axis reference flanges attached to both ends of each roll body 1A, 2A, 1C ..., 2C ... are seal bars, 1D attached to the peripheral surfaces of the roll bodies 1A, 2A at equal intervals, 1D And 2D are rotating shafts protruding in the axial direction of both ends of each roll body 1A, 2A. In the illustrated case, one horizontal heat seal roll 1 has a fixed structure and the other horizontal heat seal roll 2 has a movable structure. ing.
[0017]
Reference numeral 3 denotes a fixed frame on the automatic packaging machine (not shown) side, and 1E and 1E are fixed bearings attached to the fixed frame 3 via attachment members 6 and 6, between these fixed bearings 1E and 1E. Further, the rotation shafts 1D and 1D of one of the horizontal heat seal rolls 1 having the fixed structure are rotatably supported.
[0018]
2E and 2E are movable bearings which are attached to a frame (not shown) of the automatic packaging machine so as to be movable (contact / separate) with respect to the fixed bearings 1E and 1E, and between these movable bearings 2E and 2E. The rotary shafts 2D and 2D of the other lateral heat seal roll 2 having the above-described movable structure are rotatably supported, and the movable bearings 2E and 2E are guided by guide members 7 for guiding the movement thereof. 7 is attached.
[0019]
Reference numerals 5 and 5 denote fixed frames of the automatic packaging machine such that the front end portions 5a and 5a abut one side surface of the movable bearings 2E and 2E (specifically, one side surface of the guide members 7 and 7), respectively. 4, 4 or the above-described mounting members 6 and 6 are screwed into the adjusting screw shafts so that they can be moved forward and backward, and 10M and 10M are connected to the adjusting screw shafts 5 and 5 via shaft couplings (not shown). A motor 11 such as a servo motor is a support base on which these motors 10M and 10M are mounted.
[0020]
Reference numerals 8 and 8 denote adjustment dials attached to the fixed frames 9 and 9 of the automatic packaging machine. The adjustment dials 8 and 8 and the other side surfaces of the movable bearing dials 2E and 2E described above (specifically, guides). Pressure springs 8S, 8S that press and move the movable bearings 2E, 2E in the direction of the fixed bearings 1E, 1E are interposed between the other side surfaces of the members 7, 7 and By the forward / reverse rotation of the motors 10M, 10M and the elastic action of the pressure springs 8S, 8S, the distance between the bearings 1E, 1E and 2E, 2E, specifically, between the horizontal heat seal rolls 1, 2 The structure is such that the interval H (clearance) can be freely adjusted.
[0021]
In addition, instead of the adjustment dials 8 and 8 and the pressure springs 8S and 8S described above, air cylinders or other cushion members may be attached to pressurize the movable bearings 2E and 2E. It is optional whether to use a thing.
[0022]
Further, in FIG. 1, 12 is a control unit for each of the motors 10M and 10M configured by using a microcomputer, and 13 inputs various programs for numerically controlling the above-described interval H to the control unit 12. An interval setting means 14 such as a numeric keypad for performing the operation is a memory for storing a system program and various data.
[0023]
As shown in FIG. 2, the packaged product F, which is sandwiched by the pair of lateral heat seal rolls 1 and 2 and laterally sealed SH, is in accordance with the elements such as the type and thickness of the packaging film used, or the material. Unlike people most preferred thickness husband of the transverse sealing unit SH, also because different from inevitably interval H between the two transverse heat seal rolls 1 and 2, the present invention is determined for each element of the packaging film Numerous numerical control programs for setting the preferred interval H are stored in advance in the memory 14 (RAM) of the control unit 12 using the interval setting means 13, thereby controlling the operation of the motors 10M and 10M. It is something to try.
[0024]
When a packaging film to be used is determined, an operation unit (not shown) provided in the control unit 12 is operated to select and call a numerical control program suitable for the element from the memory 14, and according to this program, each motor 10M, 10M By automatically operating (rotating pulse) and screwing the adjusting screw shafts 5 and 5 forward or backward, the most preferable state suitable for the packaging film using the distance H between the two lateral heat seal rolls 1 and 2 is automatically obtained. Can be set automatically .
[0025]
Furthermore, in the present invention, when the thickness of the packaging film is increased in the middle, the pressure spring 8S is compressed without changing the set interval between the both side heat seal rolls 1 and 2, and the both side heat seal rolls. In order to widen the interval between 1 and 2, the roll pressing force can be changed in accordance with the thickness of the packaging film.
[0026]
In the drawing, adjustment screw shafts 5 and 5 are described as interval adjusting members operated by the motors 10M and 10M. However, this is an example, and for example, cams rotated by the motors 10M and 10M. You may comprise so that the movable bearings 2E and 2E may be pressed and moved using an actuator like a disk, and the selection is arbitrary.
[0026]
【The invention's effect】
Depending described above, in the heat-sealing device for automatic packaging machine according to the present invention it is possible to set the most favorable conditions to suit the packaging film used by the numerical control the spacing of the pair of transverse heat sealing roll The change of the thickness of the packaging film can be followed by the elastic action of the pressure spring without changing the set interval, and the interval between both rolls can be set very easily and accurately with one touch. Therefore, it is easy to operate, and also has the economy of reducing the amount of wasteful trial seals as much as possible when changing the packaging film. It is suitable for cocoons.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram showing a part of an entire heat sealing apparatus for an automatic packaging machine according to the present invention in section.
FIG. 2 is a cross-sectional view of a main part of the present invention.
FIG. 3 is a cross-sectional view of a conventional device.
FIG. 4 is an exploded perspective view of a conventional device.
[Explanation of symbols]
1, 2 A pair of transverse heat seal rolls 1E Fixed bearing 2E Movable bearing 5 Adjustment screw 8S Pressurizing spring 10M Motor 12 Controller 13 Interval setting means 14 Memory H Roll interval

Claims (1)

包装フイルムを、対向して回転する一対の横ヒートシールロールの間で挟圧して横シールするように構成したダイロールシール方式の自動包装機であって、
前記一対の横ヒートシールロールのうち、少なくとも一方を固定構造にして他方を可動構造と成し、
この他方の横ヒートシールロールを可動自在に支えるガイド部材の一側面に対して、モータの回転に従って進退螺動自在に螺装した調節ネジ軸を当接させて一対の横ヒートシールロール間の間隔を設定すると共に、他方の横ヒートシールロールを可動自在に支えるガイド部材の他側面に対して、調節ダイヤルと加圧バネを当接させて可動側横ヒートシールロールを固定側横ヒートシールロールに押圧するように構成し、
前記一対の横ヒートシールロールを用いて横シール動作を行う際は、包装フイルムの品質、厚さ、材質等の各要素に基づいた数値制御プログラムが上記モータを回転させて、横ヒートシールロール間の間隔が設定されると共に、この設定された間隔が変化することなく、加圧バネの加圧移動によって発生する間隔が加わるように動くことを特徴とする自動包装機用ヒートシール装置。A die roll seal type automatic wrapping machine configured to sandwich and seal a packaging film between a pair of transverse heat seal rolls rotating opposite to each other,
Of the pair of transverse heat seal rolls, at least one is a fixed structure and the other is a movable structure,
An adjustment screw shaft screwed so as to be able to advance and retreat in accordance with the rotation of the motor is brought into contact with one side surface of a guide member that movably supports the other side heat seal roll, and a distance between the pair of side heat seal rolls. In addition, the adjustment side and the pressure spring are brought into contact with the other side of the guide member that movably supports the other horizontal heat seal roll, so that the movable side heat seal roll becomes the fixed side heat seal roll. Configured to press,
When performing a horizontal sealing operation using the pair of horizontal heat sealing rolls, a numerical control program based on each element such as the quality, thickness, and material of the packaging film rotates the motor to move between the horizontal heat sealing rolls. The automatic sealer heat seal apparatus is characterized in that the set interval is set, and the set interval does not change and moves so as to add the interval generated by the pressurizing movement of the pressurizing spring .
JP34454097A 1997-11-28 1997-11-28 Heat sealing device for automatic packaging machine Expired - Fee Related JP4034863B2 (en)

Priority Applications (1)

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JP4742754B2 (en) * 2005-08-31 2011-08-10 大日本印刷株式会社 Embossing device
JP4742755B2 (en) * 2005-08-31 2011-08-10 大日本印刷株式会社 Embossing device
JP5075607B2 (en) * 2007-12-14 2012-11-21 三光機械株式会社 Press mechanism for heat seal roll
FR3001180B1 (en) * 2013-01-18 2015-07-10 Batscap Sa ROLLING DEVICE, ROLLING METHOD, ELECTROLYTE FILM THUS OBTAINED, AND ENERGY STORAGE ASSEMBLY FORMED FROM AT LEAST ONE LAMINATED FILM
JP6258648B2 (en) * 2013-09-20 2018-01-10 株式会社イシダ Packaging machine
JP6817705B2 (en) * 2016-01-28 2021-01-20 株式会社エム・シー・ケー Sheet processing equipment
CN114644153A (en) * 2022-03-25 2022-06-21 安徽瑞程机械设备有限公司 Seal mechanism among pillow packagine machine

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