JP2004051198A - Method of heating seal part of resin tube - Google Patents

Method of heating seal part of resin tube Download PDF

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Publication number
JP2004051198A
JP2004051198A JP2002214456A JP2002214456A JP2004051198A JP 2004051198 A JP2004051198 A JP 2004051198A JP 2002214456 A JP2002214456 A JP 2002214456A JP 2002214456 A JP2002214456 A JP 2002214456A JP 2004051198 A JP2004051198 A JP 2004051198A
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JP
Japan
Prior art keywords
resin tube
tube
heating
seal
resin
Prior art date
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Granted
Application number
JP2002214456A
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Japanese (ja)
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JP3768462B2 (en
Inventor
Toshitada Sakai
酒井　利忠
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Waiel Ind Co Ltd
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Waiel Ind Co Ltd
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Priority to JP2002214456A priority Critical patent/JP3768462B2/en
Priority to TW092136318A priority patent/TWI231798B/en
Publication of JP2004051198A publication Critical patent/JP2004051198A/en
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Classifications

    • 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

Landscapes

  • 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)

Abstract

<P>PROBLEM TO BE SOLVED: To perform a uniform heating of an end segment becoming a seal part of a resin tube by a device for heating the seal part of the resin tube so as to attain a superior seal and at the same time to make a superior outer appearance of the seal. <P>SOLUTION: This device for heating a seal part of a resin tube is constituted so that hot air is injected through a plurality of injection holes 6a at the extremity end of a nozzle 6 to heat an inner circumferential part at an end part 2c becoming a clamp seal part of the resin tube 1, and when the inner circumferential part of the end part 2c becoming the clamp seal part of the resin tube 1 is heated, the resin tube 1 is rotated. <P>COPYRIGHT: (C)2004,JPO

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孔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製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製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、前記搬送治具９又は昇降部材１２を回転させると、該搬送治具９と共に、前記樹脂性チューブ１も回転し、該樹脂性チューブ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を回転させる場合は、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、例えば、係合部材（図示せず）又は磁石（図示せず）等で予め係合又は吸着させておく。又、前記樹脂性チューブ１を回転させる方法は、前述の方法に限定されるものではなく、他の方法を用いることも可能である。
【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孔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製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、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]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for heating a seal portion of a resin tube, and particularly to a seal portion of the resin tube for clamping and sealing a resin tube for filling a filler such as cosmetics or an adhesive. In the resin tube heating device for heating and blowing the hot air to the end to soften and melt, the inner peripheral portion of the end serving as the sealing portion of the resin tube is uniformly heated, so that it is favorable. The present invention relates to a method for heating a seal portion of a resin tube so that a simple seal can be obtained.
[0002]
Problems to be solved by the prior art and the invention
A conventional resin tube of this type will be described with reference to FIGS. In FIG. 4, reference numeral 1 denotes a resin tube as a finished product filled with a filler such as a cosmetic or an adhesive, and the resin tube 1 is formed of a flexible synthetic resin. A neck 2a having a spout (not shown) at one end of the tube body 2 and a shoulder 2b connecting the neck 2a and the end of the tube body 2 over the entire circumference thereof. 2, a threaded cap 3 is detachably provided on the neck 2a, and the tube body 2 is filled with a filling material (not shown). The other end is clamp-sealed by heat fusion.
[0003]
Next, the method of filling the resin tube 1 with the filling material and the method of clamping and sealing 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. 3, the resinous tube 1 is held upside down, the end 2 c located above the tube body 2 is opened, and the filling nozzle 4 for filling the filling material F is connected to the end. 2c to fill the tube body 2 with the filler F.
[0004]
Next, as shown in FIG. 6, the resin tube 1 is carried into a sealing portion heating device 5, and the resin tube 1 is raised to open an end 2 c serving as a clamp seal portion of the resin tube 1. The tip of the nozzle 6 for hot-air jet provided in the seal-portion heating device 5 is inserted into the inside thereof for a predetermined length.
[0005]
Here, the sealing portion heating device 5 will be described. A nozzle 6 provided in the sealing portion heating device 5 has a plurality of orifices 6a, 6a,... The nozzle 6 is connected to a hot air generator (not shown) provided with a heat source. It is also known that a simple gap nozzle type (slit type) jet hole is used instead of the simple multi-hole nozzle type jet holes 6a.
[0006]
The nozzle 6 is surrounded by an exhaust pipe 7 at a predetermined interval. The exhaust pipe 7 has a downstream side (an upper side in the figure) connected to a blower (not shown) for sucking exhaust gas. The lower end of the exhaust pipe 7 extends slightly below the tip of the nozzle 6, and an inward flange 7b having an opening 7a at the center is formed at the lower end. The portion 7a is formed to have a slightly larger diameter than the outer diameter of the end 2c of the tube main body 2 in the open state.
[0007]
The hot air supplied from the hot air generator flows into the nozzle 6, and the hot air blown out from the simple perforated nozzle-type blowout holes 6 a provided in the nozzle 6 forms the resin tube 1. After the inner peripheral portion of the end portion 2c is heated, it flows out into the exhaust pipe 7 as hot exhaust, and the hot exhaust is sucked by a blower (not shown) installed on the downstream side of the exhaust pipe 7 and It is discharged downstream of the exhaust pipe 7.
[0008]
When the circumferential portion of the end portion 2c of the resin tube 1 is heated to a predetermined temperature and softened and melted, the resin tube 1 is removed from the sealing portion heating device 5, and as shown in FIG. The end portion 2c of the tube body 2 is carried into the seal clamp device 8 shown in FIG. 8 in a state where the end portion 2c is expanded in a tulip shape by softening and melting, and the tube body 2 is softened and melted by the clamp portion 8a of the seal clamp device 8. The finished end 2c is clamped, fused and sealed.
[0009]
However, the seal portion heating device 5 is configured to heat the inner peripheral portion of the end portion 2c of the tube main body 2 with the hot air blown out from the plurality of spray holes 6a of the simple multi-hole nozzle type provided in the nozzle 6. Particularly, the vicinity of the ejection holes 6a, 6a,... Is heated to a high temperature, and heating spots A, A,. Then, heating spots B, B... Also occur on the outer circumference of the end 2c corresponding to the heating spots A, A.
[0010]
Due to the heating spots A, A ..., the sealing strength of the inner peripheral portion of the end portion 2c may be weakened, and the heating spots B, B ... may deteriorate the appearance of the outer peripheral portion of the end portion 2c. Causes variation. Therefore, the occurrence of a defective rate becomes large, and the quality assurance accuracy is lowered.
[0011]
Therefore, in the resin tube sealing section heating device, the end portion of the resin tube serving as the clamp seal portion is uniformly heated to obtain a good seal and to improve the appearance of the end portion of the resin tube. Therefore, a technical problem to be solved arises, and an object of the present invention is to solve the problem.
[0012]
[Means for Solving the Problems]
The present invention has been proposed to achieve the above object, and is configured to blow hot air from a blowout hole at a nozzle tip to heat an inner peripheral portion of an end portion serving as a clamp seal portion of a resin tube. In the apparatus for heating a seal portion of a resin tube, a method for heating a seal portion of a resin tube, which rotates the resin tube when an inner peripheral portion of an end portion serving as a clamp seal portion of the resin tube is heated. It is.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. For convenience of description, the same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.
[0014]
The present invention relates to a sealing unit heating apparatus 5 shown in FIG. 1, which heats an inner peripheral portion of an end portion 2 c serving as a clamp seal portion of a resinous tube 1 when the resinous tube 1 is rotated by an axis of the resinous tube 1. The rotation T is performed around the heart.
[0015]
That is, in the sealing portion heating device 5, the resin tube 1 is raised, and the end portion 2 c of the resin tube 1 serving as a clamp seal portion is opened to the opening of the exhaust pipe 7 of the sealing portion heating device 5. 7a, and when hot air is blown out from the blowout hole 6a of the nozzle 6 of the seal portion heating device 5 to the inner peripheral portion of the end portion 2c of the resinous tube 1, the resinous tube 1 is connected to the resinous tube. The rotation T is performed about one axis.
[0016]
Next, a method of rotating the resin tube 1 by rotation T will be described with reference to FIGS. The resinous tube 1 is pressed into a conveying jig 9, and the conveying jig 9 is placed on a receiving portion 11 of a conveying device 10 and conveyed. Is transported into the sealing unit heating device 5, the transporting device 10 stops, and the elevating member 12 disposed below the transporting device 10 moves up. The jig 9 is placed and the transfer jig 9 is lifted away from the receiving portion 11, and the resinous tube 1 is also raised together with the transfer jig 9, and the end of the resinous tube 1 is moved as described above. After the portion 2c is loosely inserted into the opening 7a of the exhaust pipe 7 of the sealing portion heating device 5, it is heated.
[0017]
At this time, when the transport jig 9 or the elevating member 12 is rotated, the resin tube 1 is rotated together with the transport jig 9, and the end 2c of the resin tube 1 is heated while rotating. When the elevating member 12 is rotated, the elevating member 12 and the transport jig 9 are connected to each other by, for example, an engaging member (FIG. (Not shown) or a magnet (not shown) or the like. Further, the method of rotating the resin tube 1 is not limited to the above-described method, and another method can be used.
[0018]
Thus, when the end 2c of the resin tube 1 is heated, the end tube 2c is heated evenly in the inner peripheral direction by rotating the resin tube 1 so that the inner peripheral surface thereof is particularly uniform. As shown in FIG. 3, a uniform softened molten surface C is obtained in the inner circumferential direction.
[0019]
Therefore, a good seal can be obtained by the uniform softened and melted surface C without the occurrence of the heating unevenness of the conventional example on the inner peripheral surface of the end portion 2c of the resin tube 1 and the outer peripheral surface of the end portion 2c. Also, a good appearance can be obtained without the occurrence of heating spots, and thereby, there is no variation in production, and stable production can be performed. Therefore, it is possible to increase the accuracy of quality assurance.
[0020]
The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.
[0021]
【The invention's effect】
As described in detail in the above-described embodiment, the present invention provides a resin configured to blow hot air from a blowing hole at a nozzle tip to heat an inner peripheral portion of an end portion serving as a clamp seal portion of a resinous tube. In the heating device for the sealing portion of the tube made of resin, the resin tube is rotated when the inner peripheral portion of the end portion serving as the clamp seal portion of the resin tube is heated, so that the end portion serving as the clamp seal portion of the resin tube is provided. The inner peripheral surface is uniformly heated in the inner peripheral direction to obtain a uniform softened molten surface, and therefore, a uniform softened molten surface without the occurrence of the heating unevenness of the conventional example on the inner peripheral surface of the end portion. As a result, a good seal can be obtained, and a good appearance can be obtained without heat spots on the outer peripheral surface of the end portion. This makes it possible to eliminate variations in production and achieve stable production. Enhance It can become such, an invention which achieves the positive Chodai Naru effect.
[Brief description of the drawings]
FIG. 1 is a partially cut-away longitudinal sectional view of a sealing device heating device for a resin tube showing a state of heating the resin tube while rotating the resin tube, according to the embodiment of the present invention.
FIG. 2A is a plan view of a resin tube transfer device.
(B) A partially cut-away vertical cross-sectional view of a resin tube transfer device.
FIG. 3 shows one embodiment of the present invention, and is a front view of a resinous tube on which a uniform softened molten surface is formed.
FIG. 4 is a front view of the completed resin tube.
FIG. 5 is a partially cut-away longitudinal sectional view of a filling device showing a conventional example and showing a state immediately after filling of a resinous tube.
FIG. 6 shows a conventional example and is a partially cutaway longitudinal sectional view of a device for heating a sealing portion of a resin tube.
FIG. 7 is a partially cut-away longitudinal sectional view showing a conventional example and showing a state after heating a sealing portion of a resin tube.
FIG. 8 is a partially cutaway longitudinal sectional view showing a conventional example and showing a clamped state of a resin tube.
FIG. 9 is a front view showing a conventional example and showing a state after a clamp seal of a resin tube.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Resin-made tube 2c End part 5 Seal part heating device 6 Nozzle 6a Spout hole T Rotation

Claims (1)

ノズル先端部の噴出孔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製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ことを特徴とする樹脂製チューブのシール部加熱方法。In a resin tube seal portion heating device configured to blow hot air from a discharge hole at a nozzle tip portion to heat an inner peripheral portion of an end portion serving as a clamp seal portion of the resin tube, Wherein the resin tube is rotated at the time of heating the inner peripheral portion of the end portion serving as the clamp seal portion.
JP2002214456A 2002-07-23 2002-07-23 Heating method for sealing part of resin tube Expired - Lifetime JP3768462B2 (en)

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TW092136318A TWI231798B (en) 2002-07-23 2003-12-19 Seal portion heating method for resinous tube

Applications Claiming Priority (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010023798A1 (en) * 2008-08-26 2010-03-04 株式会社資生堂 Sealing device for resin tube container
CN113120294A (en) * 2021-04-06 2021-07-16 武汉佰力博科技有限公司 Full-automatic packaging hardware of biological sample

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114368520B (en) * 2022-01-29 2024-02-02 金蓉 Toothpaste preparation equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010023798A1 (en) * 2008-08-26 2010-03-04 株式会社資生堂 Sealing device for resin tube container
JP2010052182A (en) * 2008-08-26 2010-03-11 Shiseido Co Ltd Sealing device for resin tube container
CN113120294A (en) * 2021-04-06 2021-07-16 武汉佰力博科技有限公司 Full-automatic packaging hardware of biological sample

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JP3768462B2 (en) 2006-04-19
TWI231798B (en) 2005-05-01
TW200521033A (en) 2005-07-01

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