JPH09502405A - Butt welding equipment for plastic joints, especially pipes - Google Patents

Butt welding equipment for plastic joints, especially pipes

Info

Publication number
JPH09502405A
JPH09502405A JP7528619A JP52861995A JPH09502405A JP H09502405 A JPH09502405 A JP H09502405A JP 7528619 A JP7528619 A JP 7528619A JP 52861995 A JP52861995 A JP 52861995A JP H09502405 A JPH09502405 A JP H09502405A
Authority
JP
Japan
Prior art keywords
heating
welded
heating element
joints
joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7528619A
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Japanese (ja)
Inventor
アーミン ドマー
ディーター ドマー
Original Assignee
アーミン ドマー
ディーター ドマー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アーミン ドマー, ディーター ドマー filed Critical アーミン ドマー
Publication of JPH09502405A publication Critical patent/JPH09502405A/en
Pending legal-status Critical Current

Links

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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface direct heating of the 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
    • 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
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by the type of welding mirror
    • B29C65/2015—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by the type of welding mirror being a single welding mirror comprising several separate heating surfaces in different planes, e.g. said heating surfaces having different temperatures
    • 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
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/245—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool the heat transfer being achieved contactless, e.g. by radiation
    • 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
    • B29C66/01—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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8187—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
    • B29C66/81871—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8182—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
    • B29C66/81821—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B29K2995/0027—Transparent for light outside the visible spectrum
    • 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
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

(57)【要約】 プラスチック接合部分、特に管の突合せ溶接のための装置が提案される。緊締装置によつて、溶着されるべき接合部分は、同軸上に位置決めされ且つ軸方向に相対運動される。溶着されるべき接合部分間へ固定可能な加熱装置（１５）によって、溶着されるべき接合部分の端面が必要な溶着温度に加熱される。それで赤外線を接合部分の端面に直接、照射するために加熱装置（１５）は少なくとも一つの平らな抵抗加熱要素（１９）を有する。赤外線透過ガラスセラミックス材の防護板は、抵抗加熱要素（１９）と溶着されるべき接合部分の端面との間に位置する別体の板として接合部分の端面から離間して設けられている。抵抗加熱要素によって、溶着されるべき接合部分の端面が、必要な溶着温度に非常に速く、省エネルギーによつて直接、加熱され、その場合、赤外線透過ガラスセラミックス材の接触防護板は熱伝達に殆ど影響を及ぼさない。 (57) Summary A device for butt welding of plastic joints, especially pipes, is proposed. By means of the tightening device, the joints to be welded are coaxially positioned and axially moved relative to each other. A heating device (15), which can be fixed between the joints to be welded, heats the end faces of the joints to be welded to the required welding temperature. The heating device (15) thus has at least one flat resistance heating element (19) for directing the infrared rays directly to the end faces of the joint. The infrared-transparent glass-ceramic protective plate is provided as a separate plate located between the resistance heating element (19) and the end face of the joint to be welded, and is spaced apart from the end face of the joint. Due to the resistance heating element, the end faces of the joints to be welded are heated very quickly to the required welding temperature and directly by energy saving, in which case the contact protection plate of infrared-transparent glass-ceramic material is mostly used for heat transfer. Has no effect.

Description

【発明の詳細な説明】 プラスチック接合部分、特に管の突合せ溶接装置 本発明は、溶着されるべきプラスチック接合部分を同軸上に位置決めするため 及び軸方向に相対運動させるための緊締装置を有し、プラスチック接合部分に赤 外線照射するために、溶着されるべきプラスチック接合部分を移動できる加熱装 置を備え、その場合加熱装置がプラスチック接合部分の端面に対し実質的に平行 且つ離間して位置する形式の、プラスチック接合部分、特に管の突合せ溶接装置 に関する。 溶着結合させる前に、溶着されるべき管を非接触加熱するためのこのような装 置はＤＥ ４０ １３ ４７１ Ａ１から公知である。そこに記載されている加 熱装置は、電気加熱できる複数の加熱カートリッジを収納した、一つのセラミッ クス層を有する金属板を備える。一方でこの公知の装置の短所は、塊状金属板の 加熱に少なからぬ時間とエネルギーを要し、冷却時間も比較的長く要することに ある。更なる短所は加熱装置が重く且つ製造コストが高く、特に金属層へセラミ ックス層を被覆するためのテクノロジーが問題で、即ち金属板を加熱する時に異 なる熱膨張率によって又はその他の原因でセラミックスがひび割れし、耐用寿命 が比較的短かくなるという問題が解決されなければならない。 更に非接着皮膜が被覆されている金属製加熱板を備えた、同形式のプラスチッ ク管用溶着機の加熱装置が公知である。この加熱 板はプラスチック管を圧縮するために、溶着されるべきプラスチック管に接続さ れた後、プラスチック管から取り外される。同形式の溶着機は、例えば７１２５ ４ディッツィンゲン所在のヴィドス、ヴェー．ドマー ゾェーネ ゲーエムベー ハー社のカタログ「プラスチック溶着技術」、ＤＥ−ＯＳ ２３ ３２ １７４ 、ＤＥ−ＡＳ ２７ ３４ ９１１及びＤＥ４０ １０ ５４１ Ｃ２から公知 である。特に化学工業ではしばしば化学的純度が高い管接続が要求される。それ で加熱装置の接触面は各溶着工程で余分に浄化しなければならないので、面倒且 つ高価であるが管の接合面の汚染の危険は残る。更に管は溶着時に先ず完全に特 定の力で加熱板へ押圧された後、この力は元へ戻されなければならない。従って 溶着工程は力及び作動が非常に正確に設定されなければならないので、比較的複 雑化する。 本発明の課題は、溶着されるべき接合部分の高速且つ省エネ加熱が、シンプル 且つ低コストで製造できる加熱装置で達成されるように、冒頭に記載の溶着装置 を改良することである。 この課題は、加熱装置が接合部分の端面に直接、赤外線を照射するために少な くとも一つの平らな抵抗加熱要素を有することと、赤外線透過ガラスセラミック ス材の防護板が別体として、各々対向している加熱要素と溶着されるべき接合部 分の端面との間に位置するという本発明で解決される。 本発明の実施例では抵抗要素による金属板加熱がなされないので、抵抗要素に よって加熱されるべき接合部分の端面へ直接、赤外線を照射することができる。 加熱エネルギーが節約される上に、 抵抗加熱要素によって生成される赤外線は、抵抗要素の始動後、実質的に時間差 なく加熱されるべき接合部分の端面に照射される。従って非常に速い加熱が可能 で、総合的に高速の溶着工程を可能にする。赤外線透過セラミックス材の防護板 は、機械的損傷に対して抵抗加熱要素を防護し、場合により電圧が印加される抵 抗加熱要素に直接接触されないように防護としてのみ機能する。ガラスセラミッ クス材は透過する赤外線照射を相対的に殆ど減衰させないので、溶着されるべき 接合部分の端面の加熱は非常に速く実質的に殆ど減速されない。即ち本発明の加 熱装置は実質的に少なくとも一つの抵抗加熱要素及び二つの防護板のみ備えてい るので、シンプル且つ非常に低コストの製造が可能である。また金属板を設けな いことによって加熱装置が非常に軽くなるので使いやすくなる。 従属請求項に記載の処置で請求項１記載の装置の効果的な発展と改良が可能で ある。 同時に優れた加熱効力を有する特にシンプルな機械的レイアウトが、平らな固 定装置の両側に二つの平らな抵抗加熱要素を設けることによって、達成される。 この固定装置は特に電気絶縁性耐熱板として形成され、耐熱板には両側に赤外線 を照射するために各々、抵抗加熱要素が取着可能である。 機械的にも電気的にも安全確実且つ楽に使える加熱装置は、両側の防護板が、 少なくとも一つの抵抗加熱要素を収納するために筒形筐体の対向する平らな両側 面を形成することで達成される。筒形になった筐体において防護板を短かい筒形 筐体要素の両側に 結合することが必要なだけである。 少なくとも一つの抵抗加熱要素は効果的に一つの平面にて曲折状及び／又は渦 巻状及び／又は環状に設けた加熱線又は加熱棒として形成される。加熱線が一本 の場合、渦巻状であってもよい。 接触加熱装置としての加熱装置を選択使用するために、少なくとも一つの抵抗 加熱要素側の熱照射で加熱可能であり、効果的に接合部分側で防護板へ取り付け 可能であり、且つ溶着されるべき接合部分へ接触可能である接触加熱要素が設け られている。従って、加熱装置は可変的に非接触照射加熱にも使え、例えば接触 加熱が特別な事例で効果的である場合には、接触加熱にも使える。 接触加熱要素の形状は、各用途に合わせられ且つシンプルな例では平板でよい 。管を差し込み溶着するためには接触加熱要素が一方で加熱棒を有し、他方で加 熱ソケットを有する。加熱棒及び加熱ソケットは例えば一つの平板状の接触加熱 要素に配設されるか又はそれと一体に形成してもよい。 接触加熱要素は効果的に金属、特にアルミニウム又はアルミニウム合金より形 成され且つそれ自体公知の方法で必要な位置に耐熱プラスチックの非接着皮膜で 被覆されればよい。 本発明の実施例は図示し且つ以下の説明で詳細に解説される。 図１ 溶着工程を説明するめの溶着装置の略図を示す。 図２ 本発明の加熱装置の端面図を示す。 図３ 図２に示されている加熱装置の縦断面図を示す。 図４ 平板として両側に設けられている接触加熱要素を示す。 図５ 一方に加熱棒、他方に加熱ソケットを有する接触加熱要 素を備えた実施例を示す。 図１の側面図に概略が示されている溶着装置は、これが例えば冒頭に掲記した ＤＥ ４０ １３ ４７１ Ａ１にも記載されているように、赤外線照射で溶着 されるべき管１０、１１の加熱時の溶着工程に役立つ。先ず溶着されるべき両管 １０、１１が緊締装置１２、１３に同軸上に緊締される。この両緊締装置１２、 １３は、土台であってもよい基台１４上に、矢印Ａ及びＢで示されている軸方向 に移動可能に設けられている。そして先ず離間した管端部において図示しない切 削装置が管端部間へ移動又は傾動され、次にその管端部が緊締装置１２、１３を 介して切削装置へ押圧される。この切削装置において突合せ溶接の正確な平行接 触面を得るために、管１０、１１端面に正面研削又は正面削りが行なわれる。切 削装置は例えばかんな刃を持つかんなディスクであればよい。管１０、１１が再 度互いに離間してから、切削装置が取り外され、板状加熱装置１５が挿入される 。加熱装置１５によって、特にプラスチック材の種類によって必要な溶着温度に 加熱するために、管１０、１１両端面に加熱装置１５から赤外線が照射される。 加熱装置の条件は加熱時間及び／又は図示しない温度センサを介して決定される 。そして加熱装置１５は再度管１０、１１の間から取り出され、両管１０、１１ は緊締装置１２、１３によって互いに圧接される。これはあらかじめ設定されて いる圧力機能によって行なわれる。これで溶着強度が増大し、両管１０、１１の 端面は互いに強固に溶着される。冷却後、緊締装置１２、１３が開かれ、溶着さ れた管が取り外される。 緊締装置とその作動過程の好適な実施例は冒頭の従来技術の記載に詳述されて いる。 加熱装置１５は図２及び３に詳細に示されている。加熱装置は短かい筒状筐体 要素１６を備え、この筐体要素の端面開口部は各々、赤外線透過性のガラスセラ ミックス材の防護板１７によって閉じられている。このようなガラスセラミック 板は、ほぼ黒に着色されたものが市販されており且つ特にキッチンレンジの加熱 面としても使える。防護板１７は筒状筐体要素１６と共に筒形筐体を形成する。 防護板１７間のほぼ中央に耐熱性且つ電気絶縁性材より形成されている固定板 １８が防護板１７に平行に筒状筐体要素１６に固着されている。固定板１８の両 側に抵抗加熱要素１９が取着されている。加熱棒が固定板１８面上に実質的に均 等に分布するように図２に示されているように渦巻状又は環状に曲げられている ので、抵抗加熱要素１９は平らな加熱要素として形成され、図２の加熱状態では 赤外線が面上にほぼ均等に分布して照射される平らな抵抗加熱要素が形成される 。このような加熱棒には電圧が印加され、貫流する電流で加熱される。加熱棒の 代わりに例えば渦巻形加熱線も使える。 更に固定板１８の両側に複数の抵抗加熱要素１９を設けることもでき、その場 合面上にほぼ均等に設けられているので、赤外線は、ほぼ均等に照射される。別 の実施例において、溶着されるべき管１０、１１の端面にほぼ一致する環状面領 域のみに照射されるように、相当する環状領域にのみ加熱要素１９を設けること も 可能である。 固定板１８の両側に二つの平らな抵抗加熱要素１９又はその他の抵抗加熱装置 を設ける代わりに、原理的に防護板１７間の中央に一つの平らな抵抗加熱装置を 設けてもよい。 殆どの用途において熱接触によって管を溶着するためには公知の加熱が効果的 である。図２及び３に示されている加熱装置１５を接触加熱装置としても使える ように、加熱装置１５の両側の平面には、図４に示されているように、防護板１ ７に取着可能な二つの金属製の板状接触加熱要素２１が設けられている。加熱さ れるべきプラスチック管と接触面との接着を避けるために、この接触加熱要素は 各々それ自体公知の耐熱プラスチック材の非接着皮膜２２を有する。接触加熱要 素２１の内側は抵抗加熱要素１９の赤外線照射で加熱され、接触加熱要素２１の 外側は、冒頭に記載の従来技術の記載に詳細に説明されているように、プラスチ ック管の溶着されるべき端面に接触している。接触加熱要素２１を離間した後、 加熱装置１５は、図１に示されているように、赤外線照射のために再度 非接触 作動する。 プラスチック接合部分の溶着の変形例は所謂、差し込み溶着である。この場合 嵌合可能な二つの管は半径方向の接触面に溶着される。差し込み溶着を図２及 び３に示されている加熱装置１５で可能にするために、図４に示されている加熱 装置１５の平らな端面には更に金属板が接触加熱要素２３として取着され、その 金属板の一方が円柱形加熱棒２４を有し、他方が管形加熱ソケット２５を有する 。取着した状態では加熱棒２４は加熱ソケット２５ と同軸上に位置する。 作動中に、加熱装置１５は接触加熱要素２３を加熱し、その接触加熱要素を介 して加熱棒２４及び加熱ソケット２５は内側から加熱され、次に破線で示されて いる太い管２６は加熱棒２４へ外嵌され、且つ同じく破線で示されている細い管 ２７が加熱ソケット２５に嵌入される。所望の溶着温度に加熱後、両管２６、２ ７は互いに離され、次に管２６、２７は溶着のため互いに嵌合される。 加熱棒２４及び加熱ソケット２５の接触加熱要素２１、２３の代わりに、特殊 溶着用の他の接触加熱要素が各々、取り外し可能に加熱装置２０に取り付けるこ とができる。同形式の全ての接触加熱要素と溶着されるべきプラスチック管との 各接触面は非接着皮膜を備える。 本発明は勿論プラスチック管の溶着に限定されず、様々な形状のプラスチック 接合部分も適切に端面側で互いに溶着でき（突合せ溶接）又は嵌め合いで溶着で きる（差し込み溶着）。 優れた且つ均等な照射を達成するために、防護板１７は黒色又は黒色調でもよ い。そのため、防護板１７のガラスセラミックス材は適切に着色されているか又 は照射側に耐熱材の暗色又は黒色層が被覆されていればよい。Detailed Description of the Invention              Butt welding equipment for plastic joints, especially pipes   The present invention is for co-axially positioning the plastic joint to be welded. And a tightening device for relative movement in the axial direction. A heating device that can move the plastic joint to be welded for external radiation. The heating device is substantially parallel to the end face of the plastic joint. Butt welding device for plastic joints, especially pipes, of the type that is spaced apart About.   Such equipment for contactless heating of the pipes to be welded prior to welding them together. The device is known from DE 40 13 471 A1. The additions listed there The heating device contains one heating cartridge that can be heated electrically. And a metal plate having a cus layer. On the other hand, the disadvantage of this known device is that the bulk metal plate Heating takes a considerable amount of time and energy, and cooling takes a relatively long time. is there. A further disadvantage is that the heating device is heavy and the manufacturing cost is high, especially when the ceramic layer is The technology for coating the coating layer is problematic, i.e. different when heating the metal plate. The ceramics will crack due to the thermal expansion coefficient of The problem of being relatively short should be solved.   A plastic heating plate of the same type with a metal heating plate coated with a non-adhesive film A heating device for a tube welding machine is known. This heating The plate is connected to the plastic tube to be welded, in order to compress the plastic tube. And then removed from the plastic tube. A welding machine of the same type has, for example, 7125 4 Vidos, Vitz, located in Ditzingen. Dommer Zone Game B Har company's catalog "Plastic welding technology", DE-OS 23 32 174 , DE-AS 27 34 911 and DE 40 10 541 C2 It is. Particularly in the chemical industry, pipe connections with high chemical purity are often required. That Therefore, the contact surface of the heating device must be cleaned up in each welding step, which is troublesome. Although it is expensive, there is still the risk of contamination of the pipe joints. In addition, the pipe must be completely After being pressed against the hot plate with a constant force, this force must be restored. Therefore The welding process is relatively complex because the force and actuation must be set very accurately. Clutter.   The object of the present invention is to simplify the high-speed and energy-saving heating of the joints to be welded. And a welding device as described at the beginning, as achieved with a heating device that can be manufactured at low cost Is to improve.   This problem is small because the heating device directly irradiates the end faces of the joint with infrared rays. Having at least one flat resistive heating element and an infrared transparent glass-ceramic The joint to be welded to the heating element facing each other as a separate protective plate of sluice It is solved by the present invention that it is located between the end face of the minute.   In the embodiment of the present invention, since the metal plate is not heated by the resistance element, Therefore, infrared rays can be directly radiated to the end faces of the joints to be heated. In addition to saving heating energy, The infrared radiation produced by the resistive heating element is substantially time lag after the resistive element is activated. Irradiation is applied to the end face of the joint portion to be heated without heating. Therefore very fast heating is possible Therefore, it enables a high-speed welding process comprehensively. Infrared transparent ceramic plate Protects the resistive heating element against mechanical damage and may It only serves as a protection against direct contact with the anti-heating element. Glass ceramic Cusse materials should be welded because they do not attenuate the transmitted infrared radiation relatively little. The heating of the end faces of the joint is very fast and practically hardly slowed down. That is, the addition of the present invention The heating device essentially comprises at least one resistance heating element and two protective plates. Therefore, simple and very low cost manufacturing is possible. Also, do not provide a metal plate This makes the heating device very light and easy to use.   The measures described in the dependent claims enable an effective development and improvement of the device according to claim 1. is there.   A particularly simple mechanical layout, which at the same time has a good heating effect, results in a flat solid This is achieved by providing two flat resistance heating elements on each side of the stationary device. This fixing device is specially designed as an electrically insulating heat-resistant plate, which has infrared rays on both sides. A resistive heating element can be attached to each of the two to illuminate the.   The heating device that can be used mechanically and electrically safely, reliably and comfortably has protective plates on both sides. Opposing flat sides of a tubular housing for housing at least one resistive heating element This is achieved by forming a face. The protective plate in the cylindrical case has a short cylindrical shape On both sides of the housing element It just needs to be combined.   The at least one resistive heating element effectively bends and / or swirls in one plane. It is formed as a heating wire or heating rod provided in a winding and / or annular shape. One heating wire In the case of, it may be spiral.   At least one resistor for selective use of the heating device as a contact heating device It can be heated by heat irradiation on the heating element side and is effectively attached to the protective plate at the joint side A contact heating element is provided which is capable of contacting the joint to be welded Have been. Therefore, the heating device can also be variably used for non-contact irradiation heating, such as contact It can also be used for contact heating, where heating is effective in special cases.   The shape of the contact heating element may be flat for each application and in a simple example . For inserting and welding the tubes, the contact heating element has a heating rod on the one hand and a heating rod on the other hand. Has a thermal socket. The heating rod and the heating socket are, for example, one plate-shaped contact heating It may be disposed on the element or formed integrally therewith.   Contact heating elements are effectively made of metal, especially aluminum or aluminum alloys. Made of heat-resistant plastic in the required position by a method known per se. It may be covered.   Embodiments of the invention are illustrated and described in detail in the description below.   1 is a schematic view of a welding device for explaining the welding process.   2 shows an end view of the heating device of the present invention.   3 shows a longitudinal sectional view of the heating device shown in FIG.   FIG. 4 shows a contact heating element provided on both sides as a flat plate.   Figure 5 Contact heating required with heating rod on one side and heating socket on the other An example including the element is shown.   The welding device schematically shown in the side view of FIG. Welding by infrared irradiation, as described in DE 40 13 471 A1 Useful for the welding process when heating the tubes 10, 11 to be performed. First the two tubes to be welded 10, 11 are fastened coaxially to the fastening devices 12, 13. Both tightening devices 12, 13 is an axial direction indicated by arrows A and B on a base 14 which may be a base It is provided to be movable. Then, first, at the separated pipe ends, a not-shown cut The shaving device is moved or tilted between the pipe ends and then the pipe ends engage the tightening devices 12, 13. It is pressed against the cutting device via. Accurate parallel connection of butt welding in this cutting device In order to obtain the tactile surface, the end faces of the tubes 10 and 11 are face-ground or face-ground. Off The cutting device may be, for example, a planer disc having a planer blade. Tubes 10, 11 After being separated from each other, the cutting device is removed and the plate-shaped heating device 15 is inserted. . The heating device 15 allows the welding temperature to be adjusted to the required welding temperature depending on the type of plastic material. Both ends of the tubes 10 and 11 are irradiated with infrared rays from the heating device 15 for heating. The condition of the heating device is determined via the heating time and / or a temperature sensor (not shown). . Then, the heating device 15 is again taken out from between the tubes 10 and 11, and both tubes 10 and 11 are removed. Are pressed against each other by the tightening devices 12, 13. This is preset It is performed by the pressure function. With this, the welding strength is increased, and both pipes 10 and 11 are The end faces are firmly welded together. After cooling, the tightening devices 12 and 13 are opened and welded. The broken tube is removed.   A preferred embodiment of the tightening device and its operating process is detailed in the description of the prior art at the beginning. I have.   The heating device 15 is shown in detail in FIGS. The heating device has a short cylindrical housing An element 16 is provided, each end opening of the housing element being provided with an infrared-transparent glass cell. It is closed by a guard plate 17 of mix material. Glass ceramic like this Plates that are almost black colored are on the market and especially for kitchen stoves. It can also be used as a surface. The guard plate 17 forms a tubular housing with the tubular housing element 16.   A fixing plate formed of a heat-resistant and electrically insulating material substantially in the center between the protective plates 17. 18 is secured to the tubular housing element 16 parallel to the protective plate 17. Both sides of the fixed plate 18 A resistance heating element 19 is attached to the side. The heating rod is substantially leveled on the surface of the fixed plate 18. It is bent in a spiral shape or an annular shape as shown in FIG. Therefore, the resistance heating element 19 is formed as a flat heating element and in the heating state of FIG. A flat resistive heating element is formed in which infrared rays are radiated almost evenly over the surface. . A voltage is applied to such a heating rod, and the heating rod is heated by an electric current flowing therethrough. Of heating rod Alternatively, for example, a spiral heating wire can be used.   Furthermore, it is possible to provide a plurality of resistance heating elements 19 on both sides of the fixing plate 18, Since they are provided almost evenly on the mating surface, the infrared rays are emitted almost uniformly. Another In the embodiment shown in FIG. Providing heating elements 19 only in the corresponding annular areas, so that only the areas are illuminated Also It is possible.   Two flat resistance heating elements 19 or other resistance heating devices on either side of the fixed plate 18. In principle, instead of installing a flat resistance heating device in the center between the protective plates 17, It may be provided.   Known heating is effective for welding tubes by thermal contact in most applications It is. The heating device 15 shown in FIGS. 2 and 3 can also be used as a contact heating device. As shown in FIG. 4, the protective plate 1 is provided on both sides of the heating device 15. Two metal plate-like contact heating elements 21 attachable to 7 are provided. Heated This contact heating element is designed to avoid the adhesion between the plastic tube and the contact surface Each has a non-adhesive coating 22 of a heat-resistant plastic material known per se. Contact heating required The inside of the element 21 is heated by the infrared irradiation of the resistance heating element 19, and the contact heating element 21 is heated. The outside is plastic, as detailed in the prior art description at the beginning. Is in contact with the end face of the heat pipe to be welded. After separating the contact heating element 21, As shown in FIG. 1, the heating device 15 is not contacted again for infrared irradiation. Operate.   A modified example of the welding of the plastic joint portion is so-called insertion welding. in this case   Two matable tubes are welded to the radial contact surface. Insert welding as shown in Figure 2 Heating device 15 shown in FIGS. 4 and 3, to enable the heating shown in FIG. On the flat end face of the device 15, a metal plate is further attached as a contact heating element 23, One of the metal plates has a cylindrical heating rod 24 and the other has a tubular heating socket 25 . In the attached state, the heating rod 24 is the heating socket 25. Located coaxially with.   In operation, the heating device 15 heats the contact heating element 23 through which it comes. The heating rod 24 and the heating socket 25 are heated from the inside, and The thick tube 26 that is fitted over the heating rod 24 and is also shown by the broken line is a thin tube. 27 is fitted in the heating socket 25. After heating to the desired welding temperature, both tubes 26, 2 7 are separated from each other and then the tubes 26, 27 are fitted together for welding.   Instead of the contact heating elements 21, 23 of the heating rod 24 and the heating socket 25, a special Each of the other contact heating elements for welding should be removably attached to the heating device 20. Can be. Between all contact heating elements of the same type and the plastic pipe to be welded Each contact surface comprises a non-adhesive coating.   Of course, the present invention is not limited to welding of plastic pipes, and various shapes of plastic can be used. The joints can also be welded together properly at the end faces (butt welding) or by fitting together. Possible (insertion welding).   In order to achieve good and even irradiation, the protective plate 17 can be black or black tone. Yes. Therefore, the glass-ceramic material of the protective plate 17 is appropriately colored. It is sufficient that the irradiation side is covered with a dark or black layer of a heat-resistant material.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ // Ｂ２９Ｌ 23:00 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI // B29L 23:00

Claims (1)

【特許請求の範囲】 １．溶着されるべき接合部分を同軸上に位置決めし、軸方向に相対運動させるた めの緊締装置を備え、接合部分に赤外線を照射するために溶着されるべき接合部 分を移動できる加熱装置を備え、該加熱装置が接合部分の端面に対し実質的に平 行且つ離間して位置する形式の、プラスチック接合部分、特に管の突合せ溶接装 置であって、加熱装置（１５）が接合部分（１０、１１）の端面に直接、赤外線 を照射するための少なくとも一つの平らな抵抗加熱要素（１９）を備え、赤外線 透過ガラスセラミックス材の防護板（１７）が別体として各々、抵抗加熱要素（ １９）と溶着されるべき接合部分（１０、１１）の端面との間に設けられている ことを特徴とする装置。 ２．二つの平らな抵抗加熱要素（１９）が一つの平らな固定装置（１８）の両側 に設けられていることを特徴とする請求項１に記載の装置。 ３．平らな固定装置（１８）が電気絶縁性耐熱板として形成されていることを特 徴とする請求項２記載の装置。 ４．少なくとも一つの抵抗加熱要素（１９）を収納するために両防護板（１７） が筒形筐体の対向する二つの平らな側面を形成することを特徴とする前記請求項 の一つに記載の装置。 ５．筐体が筒形に形成されていることを特徴とする請求項４記載 の装置。 ６．少なくとも一つの抵抗加熱要素（１９）が一つの平面にて曲折状及び／又は 渦巻状及び／又は環状に設けられている加熱線又は加熱棒として形成されている ことを特徴とする前記請求項の一つに記載の装置。 ７．加熱線が渦巻状加熱線として形成されていることを特徴とする請求項６記載 の装置。 ８．接合部分がプラスチック管であることを特徴とする前記請求項の一つに記載 の装置。 ９．接触加熱装置としての加熱装置（１５）を選択使用するために、少なくとも 一つの抵抗加熱要素（１９）側の赤外線照射で加熱可能で、効果的に接合部分側 で防護板（１７）へ取り付け可能で且つ溶着されるべき接合部分（１０、１１； ２６、２７）に接触可能である接触加熱要素（２１，２２；２３、２５）が設け られていることを特徴とする前記請求項の一つに記載の装置。 １０．接触加熱要素（２１、２３）が平板として形成されていることを特徴とす る請求項９記載の装置。 １１．管（２６、２７）を差し込み溶着結合させるための接触加熱要素（２３） が一方に加熱棒（２４）、他方に加熱ソケット（２５）を有することを特徴とす る請求項９又は１０記載の装置。 １２．接触加熱要素（２１、２３〜２５）が金属、特にアルミニウム又はアルミ ニウム合金から形成されていることを特徴とする請求項９から１１の一つに記載 の装置。 １３．少なくとも溶着されるべき接合部分に接触する位置に、接 触加熱要素（２１）が耐熱プラスチック材の非接着皮膜を備えることを特徴とす る請求項１２記載の装置。 １４．防護板（１７）が暗色調又は暗色に着色されているか又は各々、暗色の外 層又は外板を備えることを特徴とする前記請求項の一つに記載の装置。 １５．防護板（１７）が統一的に暗色にて形成されていることを特徴とする請求 項１４記載の装置。 １６．防護板（１７）の少なくとも照射側外面が黒色であることを特徴とする請 求項１４又は１５記載の装置。[Claims] 1. Position the joints to be welded coaxially and move them relative to each other in the axial direction. Joint to be welded to irradiate the joint with infrared light Equipped with a heating device that can move the Butt welding equipment for plastic joints, especially pipes, of the row and spaced type The heating device (15) directly attaches infrared rays to the end faces of the joints (10, 11). Infrared radiation, comprising at least one flat resistance heating element (19) for illuminating A protective plate (17) made of a transparent glass-ceramic material is provided as a separate body for each resistance heating element ( 19) and the end faces of the joints (10, 11) to be welded An apparatus characterized in that: 2. Two flat resistance heating elements (19) on both sides of one flat fixing device (18) The device according to claim 1, wherein the device is provided in the. 3. The flat fixing device (18) is specially designed as an electrically insulating heat-resistant plate. The device according to claim 2, which is an indicator. 4. Both guard plates (17) for accommodating at least one resistance heating element (19) Forming two opposing flat sides of the tubular housing. The device according to claim 1. 5. The housing is formed in a tubular shape. Equipment. 6. At least one resistance heating element (19) is bent and / or in one plane Formed as a heating wire or rod provided in a spiral and / or annular shape Device according to one of the preceding claims, characterized in that 7. 7. The heating wire is formed as a spiral heating wire. Equipment. 8. One of the preceding claims, characterized in that the joint is a plastic tube Equipment. 9. To selectively use the heating device (15) as a contact heating device, at least It can be heated by infrared irradiation on one resistance heating element (19) side, effectively joining side Joints (10, 11; which can be attached to the protective plate (17) with and to be welded Provided with contact heating elements (21, 22; 23, 25) which are capable of contacting 26, 27) Device according to one of the preceding claims, characterized in that it is provided. 10. Characterized in that the contact heating elements (21, 23) are formed as flat plates The device according to claim 9, wherein 11. Contact heating element (23) for inserting and welding the tubes (26, 27) Has a heating rod (24) on one side and a heating socket (25) on the other side The device according to claim 9 or 10, wherein: 12. The contact heating element (21, 23-25) is a metal, especially aluminum or aluminum 12. Formed from one of the claims 9 to 11, characterized in that it is formed from a nickel alloy. Equipment. 13. At least at the position where it contacts the joint to be welded. The heating element (21) is characterized in that it comprises a non-adhesive coating of heat-resistant plastic material. 13. The device according to claim 12, wherein 14． The guard plate (17) is dark or dark colored or, respectively, outside the dark colour. Device according to one of the preceding claims, characterized in that it comprises a layer or skin. 15. The protective plate (17) is integrally formed in a dark color. Item 14. The apparatus according to Item 14. 16. A contract characterized in that at least the outer surface of the protective plate (17) on the irradiation side is black. The apparatus according to claim 14 or 15.
JP7528619A 1994-05-10 1995-04-12 Butt welding equipment for plastic joints, especially pipes Pending JPH09502405A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4416518.8 1994-05-10
DE4416518A DE4416518A1 (en) 1994-05-10 1994-05-10 Device for the frontal welding of plastic profiles, in particular pipes
PCT/EP1995/001376 WO1995030534A1 (en) 1994-05-10 1995-04-12 Device for the butt-welding of plastic sections, especially pipes

Publications (1)

Publication Number Publication Date
JPH09502405A true JPH09502405A (en) 1997-03-11

Family

ID=6517802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7528619A Pending JPH09502405A (en) 1994-05-10 1995-04-12 Butt welding equipment for plastic joints, especially pipes

Country Status (4)

Country Link
EP (1) EP0708705A1 (en)
JP (1) JPH09502405A (en)
DE (1) DE4416518A1 (en)
WO (1) WO1995030534A1 (en)

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Publication number Publication date
DE4416518A1 (en) 1995-11-16
WO1995030534A1 (en) 1995-11-16
EP0708705A1 (en) 1996-05-01

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