JP3768462B2 - Heating method for sealing part of resin tube - Google Patents

Heating method for sealing part of resin tube Download PDF

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Publication number
JP3768462B2
JP3768462B2 JP2002214456A JP2002214456A JP3768462B2 JP 3768462 B2 JP3768462 B2 JP 3768462B2 JP 2002214456 A JP2002214456 A JP 2002214456A JP 2002214456 A JP2002214456 A JP 2002214456A JP 3768462 B2 JP3768462 B2 JP 3768462B2
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Prior art keywords
resin tube
tube
heating
seal portion
inner peripheral
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JP2004051198A (en
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利忠 酒井
徹 宮田
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Shiseido Co Ltd
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Shiseido Co Ltd
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Priority to JP2002214456A priority Critical patent/JP3768462B2/en
Priority to TW092136318A priority patent/TWI231798B/en
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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
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
    • 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
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43123—Closing the ends of squeeze tubes, e.g. for toothpaste or cosmetics
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 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
    • B29C66/81433—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 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 being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 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 being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • B29C66/70—General 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
    • B29C66/73—General 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
    • B29C66/739—General 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
    • B29C66/7392—General 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
    • B29C66/73921—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Closing Of Containers (AREA)
  • Package Closures (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、樹脂性チューブのシール部加熱方法に関するものであり、特に、化粧品や接着材等の充填物を充填するための樹脂性チューブをクランプシールすべく、該樹脂性チューブのシール部となる端部に熱風を噴出して加熱し、軟化溶融させる樹脂性チューブのシール部加熱装置に於て、前記樹脂性チューブのシール部となる端部の内周部を均一に加熱することにより、良好なシールを得られるようにした樹脂性チューブのシール部加熱方法に関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来の此種樹脂性チューブについて図４乃至図９に従って説明する。図４に於て、１は化粧品或いは接着材等の充填物が充填された完成品としての樹脂性チューブであり、該樹脂性チューブ１は可撓性の合成樹脂で成形され、該樹脂性チューブ１のチューブ本体２一端部には注出口（図示せず）を備えた首部２ａと、該首部２ａと該チューブ本体２端部とを全周に及んで結合する肩部２ｂとが該チューブ本体２と一体に成形されており、該首部２ａにねじ付きキャップ３が着脱自在に設けられており、更に、該チューブ本体２内に充填物（図示せず）が充填され、前記チューブ本体２の他端部は熱融着によりクランプシールされている。
【０００３】
次に、前記樹脂性チューブ１の充填物充填方法及びクランプシールの方法を説明すると、先ず、図５に示す如く、前記樹脂性チューブ１にキャップ３を取付けて前記注出口を閉じると共に、該キャップ３側を下方にして該樹脂性チューブ１を上下逆方向に保持し、前記チューブ本体２の上方に位置する端部２ｃを開口させ、充填物Ｆを充填するための充填ノズル４を該端部２ｃ内に挿入し、該チューブ本体２内に充填物Ｆを充填する。
【０００４】
次に、図６に示す如く、前記樹脂性チューブ１をシール部加熱装置５内に搬入し、該樹脂性チューブ１を上昇させて該樹脂性チューブ１のクランプシール部となる端部２ｃの開口内に、該シール部加熱装置５に設けられた熱風噴出用のノズル６先端部を所定長さ挿入させる。
【０００５】
ここで、該シール部加熱装置５について説明すると、該シール部加熱装置５に設けられたノズル６は先端部外周に熱風を放射方向に噴出する単純多孔ノズル式の複数の噴出孔６ａ，６ａ…が開穿されており、該ノズル６は熱源を備えた熱風発生器（図示せず）に接続されている。尚、前記単純多孔ノズル式の噴出孔６ａ，６ａ…に代えて、単純隙間ノズル式（スリット式）噴出孔を用いるものも知られている。
【０００６】
又、前記ノズル６は所定間隔を有して排気管７に囲繞されており、該排気管７は下流側（図に於て上部側）が排気を吸引するためのブロアー（図示せず）に接続され、該排気管７の下端部は前記ノズル６の先端部よりもやや下方に延設され、該下端部には中央部に開口部７ａを備えた内向きフランジ７ｂが形成され、該開口部７ａは前記チューブ本体２の端部２ｃの開口状態に於ける外径よりもやや大径に形成されている。
【０００７】
而して、前記熱風発生器から供給された熱風は前記ノズル６内に流入し、該ノズル６に設けられた単純多孔ノズル式の噴出孔６ａ，６ａ…から噴出した熱風が前記樹脂性チューブ１の端部２ｃ内周部を加熱した後、高熱排気として前記排気管７内に流出し、該高熱排気は該排気管７の下流側に設置されたブロアー（図示せず）によって吸引されて該排気管７の下流側に排出される。
【０００８】
そして、前記樹脂性チューブ１の端部２ｃの円周部が所定温度に加熱されて軟化溶融されると、該樹脂性チューブ１は前記シール部加熱装置５から取り外され、図７に示す如く、該チューブ本体２の端部２ｃが軟化溶融によってチューリップ状に拡径した状態で図８に示すシールクランプ装置８内に搬入され、該シールクランプ装置８のクランプ部８ａによって前記チューブ本体２の軟化溶融された端部２ｃがクランプされて融着しシールされる。
【０００９】
然しながら、前記シール部加熱装置５は、前記ノズル６に設けられた単純多孔ノズル式の複数の噴出孔６ａ，６ａ…から噴出した熱風が前記チューブ本体２の端部２ｃ内周部を加熱するため、特に、該噴出孔６ａ，６ａ…近傍が高温に加熱され図９に示す加熱斑Ａ，Ａ…が発生する。そして、該内周部の加熱斑Ａ，Ａ…に対応する該端部２ｃの外周部にも加熱斑Ｂ，Ｂ…が発生する。
【００１０】
前記加熱斑Ａ，Ａ…によって、前記端部２ｃ内周部のシール強度が弱くなると共に、前記加熱斑Ｂ，Ｂ…によって該端部２ｃ外周部の外観が悪くなる虞があり、生産上のバラつきを発生させる。従って、不良率の発生が大となり、品質保証精度が低くなる。
【００１１】
そこで、樹脂製チューブのシール部加熱装置に於て、樹脂性チューブのクランプシール部となる端部を均一に加熱して、良好なシールを得ると共に、樹脂性チューブの端部の外観を良好にするために解決すべき技術的課題が生じてくるのであり、本発明は該課題を解決することを目的とする。
【００１２】
【課題を解決するための手段】
本発明は上記目的を達成するために提案されたものであり、ノズル先端部の噴出口から熱風を噴出して樹脂性チューブのクランプシール部となる端部内周部を加熱するように構成されて成る樹脂性チューブのシール部加熱装置に於いて、前記樹脂性チューブのクランプシール部となる端部内周部の加熱時に、該樹脂性チューブを回転させる樹脂性チューブのシール部加熱方法において、
上記樹脂性チューブは搬送装置の受け部に載置された搬送治具に圧挿支持されて搬送され、前記シール部加熱装置内に搬送されて停止すると共に、該搬送装置下方に配置された昇降部材の上昇によって前記搬送治具及び樹脂性チューブを前記搬送装置の受け部から離反上昇させて樹脂性チューブのクランプシール部となる端部を前記シール部加熱装置の排気管の開口部内に遊挿し、その時、該昇降部材を回転させて、該搬送治具と共に該樹脂性チューブを回転させ、且つ、前記昇降部材と搬送治具とを係合部材又は磁石で予め係合又は吸着させて回転させる樹脂性チューブのシール部加熱方法を提供するものである。
【００１３】
【発明の実施の形態】
以下、本発明の一実施の形態を図１乃至図３に従って詳述する。尚、説明の都合上、従来例と同一構成部分については同一符号を付してその説明を省略する。
【００１４】
本発明は、図１に示すシール部加熱装置５に於て、樹脂性チューブ１のクランプシール部となる端部２ｃ内周部の加熱時に、該樹脂性チューブ１を該樹脂性チューブ１の軸心を中心として回転Ｔさせるようにしたものである。
【００１５】
即ち、前記シール部加熱装置５に於て、前記樹脂性チューブ１を上昇させて、該樹脂性チューブ１のクランプシール部となる端部２ｃを該シール部加熱装置５の排気管７の開口部７ａ内に遊挿し、該シール部加熱装置５のノズル６の噴出孔６ａから該樹脂性チューブ１の端部２ｃの内周部に熱風を噴出する時に、該樹脂性チューブ１を該樹脂性チューブ１の軸心を中心に回転Ｔさせるようにしたものである。
【００１６】
次に、該樹脂性チューブ１を回転Ｔさせる方法を図１及び図２に従って説明する。該樹脂性チューブ１は、搬送治具９に圧挿され、該搬送治具９は搬送装置１０の受け部１１に載置されて搬送されるが、前記搬送治具９と共に前記樹脂性チューブ１が前記シール部加熱装置５内に搬送されると、該搬送装置１０は停止すると共に、該搬送装置１０の下方に配設された昇降部材１２が上昇し、該昇降部材１２上部に前記搬送治具９が載置され該搬送治具９が前記受け部１１から離反して上昇し、該搬送治具９と共に前記樹脂性チューブ１も上昇して、前述の如く、該樹脂性チューブ１の端部２ｃが前記シール部加熱装置５の排気管７の開口部７ａ内に遊挿された後、加熱される。
【００１７】
その時、昇降部材１２を回転させると、搬送治具９と共に、前記樹脂チューブ１も回転し、前記樹脂チューブ１の端部２ｃは回転しながら加熱される。尚、前記昇降部材１２を回転させるに際し、該昇降部材１２と前記搬送治具９とが互いに空回りしないように、該昇降部材１２と該搬送治具９とを係合部材（図示せず）又は磁石（図示せず）で予め係合又は吸着させておく。
【００１８】
斯くして、前記樹脂性チューブ１はその端部２ｃが加熱される時、該樹脂性チューブ１を回転することにより、該端部２ｃはその内周面が特に内周方向に均一に加熱され、図３に示す如く、内周方向に均一な軟化溶融面Ｃが得られる。
【００１９】
従って、前記樹脂性チューブ１の端部２ｃの内周面に従来例の加熱斑が発生することがなく均一な軟化溶融面Ｃによって良好なシールが得られると共に、該端部２ｃの外周面にも加熱斑が発生せず良好な外観が得られ、これによって、生産上のバラつきが無くなり安定した生産ができるため、品質の保証精度を高めることが可能となる。
【００２０】
尚、本発明は、本発明の精神を逸脱しない限り種々の改変を為すことができ、そして、本発明が該改変されたものに及ぶことは当然である。
【００２１】
【発明の効果】
本発明は上記一実施の形態に詳述したように、ノズル先端部の噴出口から熱風を噴出して樹脂性チューブのクランプシール部となる端部内周部を加熱するように構成されて成る樹脂性チューブのシール部加熱装置に於いて、前記樹脂性チューブのクランプシール部となる端部内周部加熱時に、該樹脂性チューブを回転させるので、該樹脂性チューブのクランプシール部となる端部はその内周面が内周方向に均一に加熱されて均一な軟化溶融面が得られ、従って、前記端部の内周面に従来例の加熱斑が発生することもなく均一な軟化溶融面によって良好なシールが得られると共に、該端部の外周面にも加熱斑が発生せず良好な外観が得られる。
また、上記樹脂性チューブは搬送装置の受け部に載置された搬送治具に圧挿支持されて搬送され、前記シール部加熱装置内に搬送されて停止すると共に、該搬送装置下方に配置された昇降部材の上昇によって前記搬送治具及び樹脂性チューブを前記搬送装置の受け部から離反上昇させて樹脂性チューブのクランプシール部となる端部を前記シール部加熱装置の排気管の開口部内に遊挿し、その時、該昇降部材を回転させて、該搬送治具と共に該樹脂性チューブを回転させ、且つ、前記昇降部材と搬送治具とを係合部材又は磁石で予め係合又は吸着させて回転させるので、昇降部材と樹脂性チューブを支持する搬送治具とが互いに空回りすることがなく回転することにより、樹脂性チューブの端部内周面が内周方向に均一に加熱され、効率的に均一な軟化溶融面が得られる。
これ等によって、生産上のバラつきが無くなり安定した生産ができるため、品質の保証精度を高めることが可能となる等、正に著大なる効果を奏する発明である。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示し、樹脂性チューブを回転させながら加熱する状態を示す樹脂性チューブのシール部加熱装置の一部切欠縦断面図。
【図２】（ａ）樹脂性チューブの搬送装置の平面図。
（ｂ）樹脂性チューブの搬送装置の一部切欠縦断面図。
【図３】本発明の一実施の形態を示し、均一な軟化溶融面が形成された樹脂性チューブの正面図。
【図４】完成した樹脂性チューブの正面図。
【図５】従来例を示し、樹脂性チューブの充填直後の状態を示す充填装置の一部切欠縦断面図。
【図６】従来例を示し、樹脂性チューブのシール部加熱装置の一部切欠縦断面図。
【図７】従来例を示し、樹脂性チューブのシール部加熱後の状態を示す一部切欠縦断面図。
【図８】従来例を示し、樹脂性チューブのクランプシール状態を示す一部切欠縦断面図。
【図９】従来例を示し、樹脂性チューブのクランプシール後の状態を示す正面図。
【符号の説明】
１ 樹脂性チューブ
２ｃ 端部
５ シール部加熱装置
６ ノズル
６ａ 噴出孔
Ｔ 回転[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for heating a sealing portion of a resinous tube, and in particular, the sealing portion of the resinous tube is used for clamping and sealing a resinous tube for filling a filler such as a cosmetic or an adhesive. It is good by uniformly heating the inner peripheral part of the end part which becomes the sealing part of the resinous tube in the sealing part heating device of the resinous tube which heats by blowing hot air to the end part and softening and melting it The present invention relates to a method for heating a sealing portion of a resinous tube so that a good seal can be obtained.
[0002]
[Prior art and problems to be solved by the invention]
A conventional resin tube will be described with reference to FIGS. In FIG. 4, reference numeral 1 denotes a resin tube as a finished product filled with cosmetics or a filling material such as an adhesive, and the resin tube 1 is formed of a flexible synthetic resin. 1 is provided with a neck 2a provided with a spout (not shown) at one end of the tube main body 2 and a shoulder 2b connecting the neck 2a and the end of the tube main body 2 over the entire circumference. 2, a threaded cap 3 is detachably provided on the neck 2 a, and a filling material (not shown) is filled in the tube body 2. The other end is clamp-sealed by heat sealing.
[0003]
Next, the filling method and clamp sealing method of the resin tube 1 will be described. First, as shown in FIG. 5, a cap 3 is attached to the resin tube 1 to close the spout and the cap is closed. The resin tube 1 is held in the upside down direction with the 3 side facing downward, the end 2c located above the tube body 2 is opened, and the filling nozzle 4 for filling the filling F is provided at the end. The tube body 2 is filled with the filler F.
[0004]
Next, as shown in FIG. 6, the resinous tube 1 is carried into the seal portion heating device 5, and the resinous tube 1 is lifted to open the end 2 c serving as a clamp seal portion of the resinous tube 1. Inside, the tip of the nozzle 6 for jetting hot air provided in the seal portion heating device 5 is inserted for a predetermined length.
[0005]
Here, the seal portion heating device 5 will be described. The nozzle 6 provided in the seal portion heating device 5 has a plurality of simple porous nozzle type jet holes 6a, 6a for jetting hot air radially around the tip end portion. The nozzle 6 is connected to a hot air generator (not shown) having a heat source. It is also known that a simple clearance nozzle type (slit type) injection hole is used instead of the simple porous nozzle type injection holes 6a, 6a.
[0006]
The nozzle 6 is surrounded by an exhaust pipe 7 with a predetermined interval, and the exhaust pipe 7 is a blower (not shown) for sucking exhaust gas on the downstream side (upper side in the figure). The lower end portion of the exhaust pipe 7 extends slightly below the tip end portion of the nozzle 6, and an inward flange 7b having an opening 7a at the center is formed at the lower end portion. The part 7a is formed to have a diameter slightly larger than the outer diameter in the open state of the end 2c of the tube body 2.
[0007]
Thus, the hot air supplied from the hot air generator flows into the nozzle 6, and the hot air jetted from the simple porous nozzle type jet holes 6 a, 6 a. After heating the inner peripheral portion of the end portion 2c, it flows into the exhaust pipe 7 as high-temperature exhaust, and the high-temperature exhaust is sucked by a blower (not shown) installed on the downstream side of the exhaust pipe 7. It is discharged downstream of the exhaust pipe 7.
[0008]
When the circumferential portion of the end portion 2c of the resinous tube 1 is heated to a predetermined temperature and softened and melted, the resinous tube 1 is removed from the seal portion heating device 5, and as shown in FIG. The end 2c of the tube body 2 is expanded into a tulip shape by softening and melting and is carried into the seal clamp device 8 shown in FIG. 8, and the tube body 2 is softened and melted by the clamp portion 8a of the seal clamp device 8. The end portion 2c is clamped and fused and sealed.
[0009]
However, the seal portion heating device 5 heats the inner peripheral portion of the end portion 2c of the tube body 2 by the hot air blown from a plurality of simple porous nozzle type jet holes 6a, 6a provided in the nozzle 6. In particular, the vicinity of the ejection holes 6a, 6a,... Is heated to a high temperature, and heating spots A, A,. And the heating spots B, B ... also generate | occur | produce also in the outer peripheral part of this edge part 2c corresponding to the heating spots A, A ... of this inner peripheral part.
[0010]
The heating spots A, A ... may weaken the sealing strength of the inner periphery of the end 2c, and the heating spots B, B ... may deteriorate the appearance of the outer periphery of the end 2c. Causes variation. Therefore, the defect rate is increased and the quality assurance accuracy is lowered.
[0011]
Therefore, in the resin tube seal part heating device, the end part that becomes the clamp seal part of the resin tube is uniformly heated to obtain a good seal, and the appearance of the end part of the resin tube is improved. Therefore, a technical problem to be solved arises, and the present invention aims to solve the problem.
[0012]
[Means for Solving the Problems]
The present invention has been proposed in order to achieve the above-described object, and is configured to heat hot air from a nozzle outlet at a nozzle tip to heat an inner peripheral portion of an end serving as a clamp seal portion of a resinous tube. In the resin tube seal portion heating apparatus, in the resin tube seal portion heating method of rotating the resin tube at the time of heating the inner peripheral portion of the end serving as the clamp seal portion of the resin tube,
The resin tube is press-supported and transported by a transport jig placed on a receiving portion of the transport device, transported into the seal portion heating device, stopped, and moved up and down disposed below the transport device. The conveying jig and the resin tube are lifted away from the receiving portion of the conveying device by raising the member, and the end portion that becomes the clamp seal portion of the resin tube is loosely inserted into the opening of the exhaust pipe of the sealing portion heating device. , then, by rotating the lifting member, rotating the該樹greasy tube together with the conveying jig, and to rotate said elevating member and the conveying jig in advance engagement or adsorbed by the engaging member or magnet A method for heating a sealing portion of a resin tube is provided.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. For convenience of explanation, the same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.
[0014]
In the seal portion heating apparatus 5 shown in FIG. 1, the resin tube 1 is attached to the shaft of the resin tube 1 when the inner peripheral portion of the end portion 2 c serving as a clamp seal portion of the resin tube 1 is heated. It is designed to rotate T around the heart.
[0015]
That is, in the seal portion heating device 5, the resin tube 1 is raised, and the end portion 2 c serving as a clamp seal portion of the resin tube 1 is opened to the exhaust pipe 7 of the seal portion heating device 5. When the hot air is ejected into the inner peripheral portion of the end portion 2c of the resin tube 1 from the ejection hole 6a of the nozzle 6 of the seal portion heating device 5, the resin tube 1 is inserted into the resin tube 1 In this example, the rotation T is made about the axis of one.
[0016]
Next, a method for rotating the resin tube 1 will be described with reference to FIGS. The resinous tube 1 is press-fitted into a conveying jig 9, and the conveying jig 9 is placed on the receiving portion 11 of the conveying device 10 and conveyed, and together with the conveying jig 9, the resinous tube 1. Is transported into the seal portion heating device 5, the transport device 10 stops and the elevating member 12 disposed below the transport device 10 rises, and the transport treatment is placed above the elevating member 12. The tool 9 is placed and the transport jig 9 is lifted away from the receiving portion 11, and the resin tube 1 is also lifted together with the transport jig 9, and as described above, the end of the resin tube 1 is raised. After the part 2c is loosely inserted into the opening 7a of the exhaust pipe 7 of the seal part heating device 5, it is heated.
[0017]
At that time, when the elevating member 12 is rotated, the resin tube 1 is also rotated together with the conveying jig 9, and the end 2c of the resin tube 1 is heated while rotating. Incidentally, upon rotating the lifting member 12, as該昇and descending member 12 and the transfer jig 9 is not idling each other, (not shown) engaging members and elevating member 12 and the transfer jig 9 or It is previously engaged or attracted with a magnet (not shown).
[0018]
Thus, when the end 2c of the resin tube 1 is heated, the inner surface of the end 2c is heated evenly in the inner periphery direction by rotating the resin tube 1. As shown in FIG. 3, a uniform softened and melted surface C is obtained in the inner circumferential direction.
[0019]
Therefore, a heat seal of the conventional example is not generated on the inner peripheral surface of the end portion 2c of the resin tube 1 and a good softening and melting surface C is obtained, and a good seal is obtained on the outer peripheral surface of the end portion 2c. In addition, heating spots do not occur and a good appearance can be obtained. As a result, there is no variation in production and stable production can be achieved, so that the quality assurance accuracy can be increased.
[0020]
It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified one.
[0021]
【The invention's effect】
As described in detail in the above embodiment, the present invention is a resin configured to heat the inner peripheral portion of the end portion that becomes the clamp seal portion of the resin tube by blowing hot air from the outlet of the nozzle tip portion. Since the resin tube is rotated at the time of heating the inner peripheral portion of the end that becomes the clamp seal portion of the resin tube, the end portion that becomes the clamp seal portion of the resin tube is The inner peripheral surface is uniformly heated in the inner peripheral direction to obtain a uniform softened and melted surface. Therefore, the uniform softened and melted surface does not generate the heating spots of the conventional example on the inner peripheral surface of the end portion. A good seal can be obtained, and heating spots are not generated on the outer peripheral surface of the end portion, and a good appearance can be obtained.
The resin tube is press-supported and transported by a transport jig placed on the receiving portion of the transport device, transported into the seal unit heating device, stopped, and disposed below the transport device. When the lifting member is raised, the conveying jig and the resin tube are lifted away from the receiving portion of the conveying device, and the end portion that becomes the clamp seal portion of the resin tube is placed in the opening of the exhaust pipe of the sealing portion heating device. loosely inserted, at that time, and by rotating the lifting member, rotating the該樹greasy tube together with the conveying jig, and, previously engaged or adsorbed by the engaging member or a magnet and said lifting member and the transfer jig because rotated, by a conveying jig for supporting the lifting member and the resinous tube is rotated without the idle one another, inner peripheral surface of an end portion of the resinous tube is uniformly heated in the inner circumferential direction, effectively One softening melt surface can be obtained.
As a result, there is no variation in production and stable production can be achieved, so that it is possible to increase the quality assurance accuracy.
[Brief description of the drawings]
FIG. 1 is a partially cutaway longitudinal sectional view of a sealing portion heating apparatus for a resinous tube showing a state in which the resinous tube is heated while rotating, according to an embodiment of the present invention.
FIG. 2A is a plan view of a resin tube conveying apparatus.
(B) The partially cut away longitudinal cross-sectional view of the conveyance apparatus of a resin tube.
FIG. 3 is a front view of a resin tube showing an embodiment of the present invention and having a uniform softened and melted surface formed thereon.
FIG. 4 is a front view of a completed resin tube.
FIG. 5 is a partially cutaway longitudinal sectional view of a filling device showing a conventional example and showing a state immediately after filling with a resin tube.
FIG. 6 is a partially cutaway longitudinal sectional view of a resin tube sealing portion heating device showing a conventional example.
FIG. 7 is a partially cutaway longitudinal sectional view showing a conventional example and showing a state after heating a sealing portion of a resinous tube.
FIG. 8 is a partially cutaway longitudinal sectional view showing a conventional example and showing a clamp seal state of a resin tube.
FIG. 9 is a front view showing a conventional example and a state after clamp sealing of a resin tube.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Resin tube 2c End part 5 Seal part heating apparatus 6 Nozzle 6a Ejection hole T Rotation

Claims (1)

ノズル先端部の噴出口から熱風を噴出して樹脂性チューブのクランプシール部となる端部内周部を加熱するように構成されて成る樹脂性チューブのシール部加熱装置に於いて、前記樹脂性チューブのクランプシール部となる端部内周部の加熱時に、該樹脂性チューブを回転させる樹脂性チューブのシール部加熱方法において、
上記樹脂性チューブは搬送装置の受け部に載置された搬送治具に圧挿支持されて搬送され、前記シール部加熱装置内に搬送されて停止すると共に、該搬送装置下方に配置された昇降部材の上昇によって前記搬送治具及び樹脂性チューブを前記搬送装置の受け部から離反上昇させて樹脂性チューブのクランプシール部となる端部を前記シール部加熱装置の排気管の開口部内に遊挿し、その時、該昇降部材を回転させて、該搬送治具と共に該樹脂性チューブを回転させ、且つ、前記昇降部材と搬送治具とを係合部材又は磁石で予め係合又は吸着させて回転させることを特徴とする樹脂性チューブのシール部加熱方法。In the resin tube sealing portion heating apparatus configured to heat hot air from a nozzle outlet at a tip end of the nozzle to heat an inner peripheral portion of the end serving as a clamp seal portion of the resin tube, the resin tube In the method of heating the sealing portion of the resin tube, the resin tube is rotated at the time of heating the inner peripheral portion of the end that becomes the clamp seal portion of
The resin tube is press-supported and transported by a transport jig placed on a receiving portion of the transport device, transported into the seal portion heating device, stopped, and moved up and down disposed below the transport device. The conveying jig and the resin tube are lifted away from the receiving portion of the conveying device by raising the member, and the end portion that becomes the clamp seal portion of the resin tube is loosely inserted into the opening of the exhaust pipe of the sealing portion heating device. , then, by rotating the lifting member, rotating the該樹greasy tube together with the conveying jig, and to rotate said elevating member and the conveying jig in advance engagement or adsorbed by the engaging member or magnet A method for heating a sealing portion of a resinous tube, characterized in that:
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Application Number Priority Date Filing Date Title
JP2002214456A JP3768462B2 (en) 2002-07-23 2002-07-23 Heating method for sealing part of resin tube

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JP5553137B2 (en) * 2008-08-26 2014-07-16 株式会社 資生堂 Resin tube container sealing device
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CN114368520B (en) * 2022-01-29 2024-02-02 金蓉 Toothpaste preparation equipment

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