DE2619935A1 - Vorrichtung zum verschweissen von schlauchstuecken, insbesondere von vakuumfesten schlaeuchen aus thermoplastischem kunststoff - Google Patents

Vorrichtung zum verschweissen von schlauchstuecken, insbesondere von vakuumfesten schlaeuchen aus thermoplastischem kunststoff

Info

Publication number
DE2619935A1
DE2619935A1 DE19762619935 DE2619935A DE2619935A1 DE 2619935 A1 DE2619935 A1 DE 2619935A1 DE 19762619935 DE19762619935 DE 19762619935 DE 2619935 A DE2619935 A DE 2619935A DE 2619935 A1 DE2619935 A1 DE 2619935A1
Authority
DE
Germany
Prior art keywords
welding
tube
punch
hose
sealing
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.)
Granted
Application number
DE19762619935
Other languages
English (en)
Other versions
DE2619935C3 (de
DE2619935B2 (de
Inventor
Josef Drabinsky
Helmut Dipl Ing Feinle
Bernhard Leidig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE2619935A priority Critical patent/DE2619935C3/de
Publication of DE2619935A1 publication Critical patent/DE2619935A1/de
Publication of DE2619935B2 publication Critical patent/DE2619935B2/de
Application granted granted Critical
Publication of DE2619935C3 publication Critical patent/DE2619935C3/de
Expired 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B29B13/024—Hollow bodies, e.g. tubes or profiles
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • 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
    • B29C66/814—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
    • B29C66/81427—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 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/8181—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 cooling constructional aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • 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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • 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
    • B29L2023/005—Hoses, i.e. flexible

Landscapes

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

Description

  • Vorrichtung zum Ve rsc hwe if3en von :cli inuchs tücken,
  • insbesondere von vakuumfesten Schläuchen aus thermoplastischem Kunststoff Die erfindung betrifft eine Vorrichtung zum Verscliweißen von Schlauchstücken, insbesondere von vakuumfesten Schläuchen aus thermoplastischem Kunststoff, mit einem auf den Schlauch einwirkenden Heizelement und mit einem auf diesen absenkbaren zweiteiligen Schweißstempel.
  • Ls sind Vorrichtungen zum Verscliweißen von Schlauchs tücken aus thermoplastischem Kunststoff bekannt die im allgemeinen aus zwei beheizten, gegeneinander drückbaren Scliweißbacken bestehen.
  • Das Schlauchstück wird zwischen die Schweißbacken geschoben, danach werden die Schweißbacken gegeneinandergedrückt, wobei das eingeklemmte Schlauchstück bereits vorher oder durch die aufgeheizten Schweißbacken auf die erforderliche Schweißtemperatur gebracht und durch einen von den Scliweißbacken auf das erhitzte Schlauchstüuck einwirkenden Druck verschweißt wird.
  • Zum Verscliweißen von thermoplastischen Kunststoffen sind mehrere Verfahren bekannt, die sich im wesentlichen in der Erwärmung des Schweißgutes voneinander unterscheiden. Für die erfindungsgemäße Vorrichtung kann selbstverständlich jedes geeignete Schweißverfahren verwendet werden.
  • Beim Verschweißen eines Schlauches - das Schlauchstück wird im Boreich der Schweißuaht auf die Schweißtemperatur erhitzt und durch tekannte Mittel zusammengedrückt - mißt die schwei@uabt etwa das @ineinhall fache des ursprünglichen Schlauchdarchmessers. piese Verbreiterung ist jedoch bei einer Verwendung des Schlanches als l@impfungselement in einer Kraftstuffleitung ungeeignet.
  • Aufgabe der Erfindung ist es, mittels einer Vorrichtung die Bnden eines gegen äußeren Überdruch formstabilen Schlauches derart luftdicht zu verschweiGen, daß die Schbeißnähte den Burchumesser des ursprünglichen Sch@aurhstüches nicht überragen.
  • Diese Aufgabe wird dadurch ge@öst, daß der aus aber- und @nterteil bustel ende Schweißstempel seittich feststel@@de B@, re@@ @@@sflächen aufweist, die sich paqralle zur Schlauchlängsrichtung grstrecken.
  • Durch die Begrenzungsflächen kann sich das durch Wärum in plastischem Zustand versetzte Schlauchstück zwischen Ober- und Unterteil des druckbelasteten Schwei@stempels seitlich nicht ausdehnen und wird in den lichten Raum des Schlauches verdrängt, Um das Abfließen des plastischen kunststoffes in den Schlauchhohlraum zu begüastigen, kann der Schweißstempel an den knden verzugsweise konische Ausnehmungen aufweisen, welch@e einen Übergang vom Schlauchquerschnitt auf der abgequetscbten Schweißuabt verformen.
  • Darüber hinaus können die beiden gegenüberliegenden Begrenzungsflächen parallel zu einander sein und mit dem Ober- und Unterteil des Schweißstempels vorzugsweise einen rechteckigen @uerschnitt der Schweißnaht ergeben.
  • Außerdem kann der Abstand zwischen den Begrenzungsflächen gleich dem äußeren Schlauchdurchmesser sein.
  • Schließlich kann der Schweißstempel Anschläge zur Begrenzung der größtmöglichen Annäherung von Ober- und Unterteil aufweisen. Dieser begrenzte Abstand ist vorzugsweise etwa gleich der dopptelten Wandstärke des Schlauchstückes.
  • Anlland eines in der Zeichnung dargestellten Ausftihrungsbei s1>i.'Its soll die Erfindung näher erläutert werden. Es zeigen Fig. 1 einen Querschnitt durch den Schweißstempel in eingefahrenem Zustand, Fig. 2 eine Seitenansicht der Fig. 1 und Fig. 3 bis 5 eine Schweißvorrichtung im Prinzip.
  • Der in den Fig. 1 und 2 dargestellte Schweißstempel besteht aus einem Oberteil 1 und einem Unterteil 2, wobei das Unterteil zwei parallel zueinander angeordnete Anschläge 3, 4 mit Begrenzungsflächen 5, 6 ausweis, zwischen denen das eigentliche Druckteil 7 eingreift.
  • Ober- und Unterteil 1, 2 des Schweißstempels sind derart ausgelegt, daß im eingefahrenen Zustand, beim Aufliegen der Anschläge 3J 4, ein schmaler, rechteckiger Querschnitt 8 offenbleibt. An den Enden des Schweißstempels ist je eine Sackbohrung 10, 11 vorgesehen, die in je eine konische Ausnehmung 12, 13 zum rechteckigen Querschnitt 8 ausläuft.
  • Die eigentliche Vorrichtung (Fig. 3 - 5) besteht aus zwei Schlauchführungen 14 und 15, wobei die Führung 14 aus einem Material mit geringem Wärmeleitvermögen sein kann. Ein axial verschiebbares Heizelement 16, welches bei Offenstellung des Schweißstempels zwischen Oberteil 1 und Unterteil 2 gefahren werden kann, erwärmt das Schlauchstück 9 auf die erforderliche Schweißtemperatur.
  • Nach Erreichen der Schweißtemperatur fährt das lleizelement 16 zur Seite, so daß es um die Führung 14 zu liegen kommt, die den Schlauch während der Schweißdauer gegen Wärme abschirmt.
  • Nach dem Verschieben des EleizeLementes 16 schließen sich Ober-und Unterteil (1, 2) des Schweißstempels bis die Anschläge 3, 4 fest aufeinanderliegen. Beim Zusammenpressen von Ober- und Unterteil verschweißt die Schlauchwandung, die Schweißnaht erhält die gewünschte, durch den Schweißstempel festgelegte Form. Das überflüssige, sich im plastischen Zustand befindliche Material wird hierbei in das Innere des Schlauches 9 gedrückt, wo es zu einem Pfropfen erstarrt, so daß eine feste und absolut dichte Verschweißung gebildet wird. Während des Schweißens bzw. während der Abkühlungszeit wird die vorhergehende Schweißnaht durch ein Messer 17 derart getrennt, daß mit einer einzigen Schweißnaht jeweils zwei Schlaucshstückenden verschweißt sind. Um die Schweißzeit abzukürzen, können Ober- und Unterteil des Schweißstempels vorzugsweise durch Kühlwasser gekühlt werden.
  • Nach genügender Abkühlung fahren Ober- und Unterteil des Schweißstempels in die Ausgangsstellungen zurück, der Schlauch 9 wird vorgeschoben, während das Heizelement 16 wieder in die Heizstellung gebracht wird.
  • L e e r s e i t e

Claims (5)

  1. Ans ric1e Vorrichtung zum Verschweißen von Schlauchstücken, insbesondere von vakuumfesten Schläuchen aus thermoplnstischem Kunststoff, mit einem auf den Schlauch einwirkenden Heizelement iind nit einem auf diesen absenkbaren zweiteiligen Schweißstempel, dadurch gekennzeichnet, daß der aus Ober-und Unterteil (1, 2) bestebende Schweißstempel seitlich feststehende Begrenzungsflächen (5, 6) aufweist, die sich parallel zur Schtauchläbngsrichtung erstrecken.
  2. 2. Vorrichtung nach Anspruch 1 ,.Iurch gekennzeichnet, daß der Schweißstepel an den Endeii vorzugsweise konische Ausnehmungen (12, 13) aufweist, welche einen Übergang von Schlauchquerschnitt auf der abgequetschten Schweißnaht verformen.
  3. 3. Vorrichtung nach Auspruch 2 d a d u r c h g e k e n n z e i c h n e t, daß die beiden gegenüberliegenden Begrenzungsflächen (12, 13) parallel zu einander sind und in Verbindung mit dem Ober- und Unterteil (1, 2) des Schweißstempels vorzugsweise einen rechteckigen Querschnitt dr Schweißnaht ergeben.
  4. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß tier Abstand der Begrenzungsflächen (12, 13) gleich dem äußeren Schi auchdurclimesser ist.
  5. 5. Vorrichtung nach einem oder mehreren Ansprilehen 1 bis 4, dadurch gekennzeiellnet, tiall der SchweiLlstempel Anschläge (3, lt) zur Begrenzung der größtmöglichen Annäherung von Ober- und Unterteil (1, 2) aufweist.
DE2619935A 1976-05-06 1976-05-06 Vorrichtung zum Querverschweißen von Schlauchstücken aus thermoplastischem Kunststoff, insbesondere von vakuumfesten Schläuchen Expired DE2619935C3 (de)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996016791A1 (en) * 1994-12-02 1996-06-06 Shannon B.V. Method for introducing sealing edges into panels of thermoplastic material, and an assembly therefor
EP1133360A1 (de) * 1998-10-26 2001-09-19 Drummond Scientific Company Kapillarpipette und verfahren zu ihrer herstellung und anwendung
WO2021134486A1 (en) * 2019-12-31 2021-07-08 Fresenius Medical Care Deutschland Gmbh Peel seal tube closure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996016791A1 (en) * 1994-12-02 1996-06-06 Shannon B.V. Method for introducing sealing edges into panels of thermoplastic material, and an assembly therefor
NL9402035A (nl) * 1994-12-02 1996-07-01 Shannon Bv Werkwijze voor het aanbrengen van afdichtingsranden in panelen van thermoplastisch materiaal en een samenstel daarvoor.
EP1133360A1 (de) * 1998-10-26 2001-09-19 Drummond Scientific Company Kapillarpipette und verfahren zu ihrer herstellung und anwendung
EP1133360A4 (de) * 1998-10-26 2004-10-20 Drummond Scient Co Kapillarpipette und verfahren zu ihrer herstellung und anwendung
WO2021134486A1 (en) * 2019-12-31 2021-07-08 Fresenius Medical Care Deutschland Gmbh Peel seal tube closure

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DE2619935B2 (de) 1978-04-06

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