CH698798B1 - Thermoplastic resin pipes connecting method, involves arranging auxiliary pipe parts at holders, providing waste pipe parts opposite to pipe parts after separation and moving of holders, and welding waste pipe parts with each other - Google Patents

Thermoplastic resin pipes connecting method, involves arranging auxiliary pipe parts at holders, providing waste pipe parts opposite to pipe parts after separation and moving of holders, and welding waste pipe parts with each other Download PDF

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Publication number
CH698798B1
CH698798B1 CH01499/06A CH14992006A CH698798B1 CH 698798 B1 CH698798 B1 CH 698798B1 CH 01499/06 A CH01499/06 A CH 01499/06A CH 14992006 A CH14992006 A CH 14992006A CH 698798 B1 CH698798 B1 CH 698798B1
Authority
CH
Switzerland
Prior art keywords
pipe parts
lines
holders
auxiliary line
line parts
Prior art date
Application number
CH01499/06A
Other languages
German (de)
Inventor
Marcel Roell
Original Assignee
Wave Biotech 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 Wave Biotech Ag filed Critical Wave Biotech Ag
Priority to CH01499/06A priority Critical patent/CH698798B1/en
Publication of CH698798B1 publication Critical patent/CH698798B1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841Holding or clamping means for handling purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20Joining 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"
    • B29C65/2046Joining 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" using a welding mirror which also cuts the parts to be joined, e.g. for sterile welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802Positioning the parts to be joined, e.g. aligning, indexing or centring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/114Single butt joints
    • B29C66/1142Single butt to butt joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General 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
    • B29C66/51Joining 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
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5221Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/73General 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
    • B29C66/739General 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
    • B29C66/7392General 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
    • B29C66/73921General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/84Specific machine types or machines suitable for specific applications
    • B29C66/843Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432Machines for making separate joints at the same time mounted in parallel or in series
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/84Specific machine types or machines suitable for specific applications
    • B29C66/857Medical tube welding machines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02Welded joints; Adhesive joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2101/00Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12Thermoplastic materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The method involves arranging pipes (2, 4) in holders (6, 8). The holders are moved parallel and opposite to each other until separation points of the pipes lie opposite to each other. The holders are moved against each other to merge separation surfaces of the pipes with each other. Auxiliary pipe parts (38, 40) are arranged at the holders above and below the pipes such that the pipe parts are detected by a heated separation blade. Waste pipe parts (2a, 4a) are provided opposite to the pipe parts after separation and moving of the holders. The waste pipe parts are welded with each other. An independent claim is also included for a device for executing a method for connecting thermoplastic resin pipes.

Description

       

  Technisches Gebiet

  

[0001]    Die Erfindung betrifft ein Verfahren zum Verbinden zweier Leitungen aus thermoplastischem Kunststoff durch Verschweissen gemäss Oberbegriff des Anspruchs 1 sowie eine Vorrichtung zur Durchführung des Verfahrens gemäss Oberbegriff des Anspruchs 5.

Stand der Technik

  

[0002]    Ein Verfahren und eine Vorrichtung zum Verschweissen zweier Leitungen aus thermoplastischem Kunststoff durch Verschweissen der eingangs genannten Art sind bekannt und in den beiliegenden Fig. 1 bis 3 dargestellt. Zwei zu verschweissende Leitungen werden einander überlappend in zwei relativ und parallel zueinander verfahrbaren Halterungen angeordnet, die mit Abstand voneinander angeordnet sind. Zwischen diese Halterungen greift eine beheizte Trennklinge ein und trennt die Leitungen durch Aufschmelzen des Kunststoffes. Daraufhin werden die Halterungen parallel soweit gegeneinander verfahren, bis die Trennstellen der zu verbindenden Leitungen einander gegenüberstehen. Dann werden die Halterungen gegeneinander verfahren, um die Trennflächen der Leitungen miteinander zu verbinden, das heisst, miteinander zu verschmelzen.

   Nachteilig ist es, dass die abgetrennten Abfallleitungsteile freie Öffnungen aufweisen, aus denen restliche Behandlungsmedien austreten können, die in der Umgebung Schaden anrichten können.

Darstellung der Erfindung

  

[0003]    Aufgabe der Erfindung ist es, ein Verfahren und eine Vorrichtung der eingangs genannten Art weiter zu verbessern.

  

[0004]    Die gestellte Aufgabe wird gelöst:
<tb>a)<sep>Bei dem eingangs genannten Verfahren durch die erfindungswesentlichen Merkmale des Anspruchs 1;


  <tb>b)<sep>bei der eingangs genannten Vorrichtung durch die kennzeichnenden Merkmale des Anspruchs 5.

  

[0005]    Dabei haben die Massnahmen der Erfindung zunächst einmal zur Folge, dass die Abfallleitungsteile im Zuge des Verschweissens der Leitungsteile geschlossen werden, so dass keinerlei Verunreinigungen aus den Abfallleitungsteilen in die Umgebung gelangen können um dort Schaden anzurichten. Dies wird im Wesentlichen dadurch erreicht, dass die Halterungen auf beiden Seiten - vorzugsweise gleichen Abstand wie der Abstand zwischen den Ausnehmungen der zu verbindenden Leitungen - jeweils eine weitere Ausnehmung für die Aufnahme eines Hilfsleitungsteiles aufweisen, wobei die Hilfsleitungsteile von der Trennklinge ebenfalls erfasst werden und nach dem Trennen und Verfahren der Halterung die Abfallleitungsteile jeweils einem geschlossenen Hilfsleitungsteil gegenüberstehen und diese miteinander verbunden werden, werden.

  

[0006]    Vorteilhafte Ausgestaltungen des Verfahrens sind in den Ansprüchen 2 bis 4, sowie 6 und 7 beschrieben.

  

[0007]    Vorteilhaft ist es, wenn dabei von der Vorbereitungsphase bis zur Phase des Verschweissens und des nachfolgenden Abkühlens alle Leitungen so weit komprimiert werden, dass sie während dieser Zeit geschlossen sind (Anspruch 2 bzw. 6).

  

[0008]    Gemäss Anspruch 3 sind die Hilfsleitungsteile vorteilhafterweise jeweils separate, zumindest an einem Ende geschlossene, nicht kontaminierte Leitungsabschnitte.

  

[0009]    Die Hilfsleitungsteile werden gemäss Anspruch 4 bzw. 7 über die Trennebene hinaus in die gegenüberliegenden Halterungen geführt sind und ebenfalls getrennt.

  

[0010]    Die vorbenannten sowie die beanspruchten und in den nachfolgenden Ausführungsbeispielen beschriebenen, erfindungsgemäss zu verwendenden Elemente unterliegen in ihrer Grösse, Formgestaltung, Materialverwendung und ihrer technischen Konzeption keinen besonderen Ausnahmebedingungen, so dass die in dem jeweiligen Anwendungsgebiet bekannten Auswahlkriterien uneingeschränkt Anwendung finden können.

Kurze Beschreibung der Zeichnungen

  

[0011]    Nachfolgend werden an Hand der Zeichnungen einerseits der Stand der Technik (Fig.1bis 3) und andererseits Ausführungsbeispiele der Erfindung (Fig. 4 bis 6) näher beschrieben, dabei zeigen:
<tb>Fig. 1<sep>eine Vorrichtung mit zwei zu verbindenden Leitungen in Grundstellung und in Draufsicht;


  <tb>Fig. 2:<sep>die Vorrichtung der Fig. 1während des Trennens;


  <tb>Fig. 3:<sep>die Vorrichtung der Fig. 1während des Verschweissens;


  <tb>Fig. 4:<sep>die Vorrichtung der Fig. 1mit einer weiteren Aufnahme für einen Hilfsleitungsteil in Grundstellung;


  <tb>Fig. 5:<sep>die Vorrichtung der Fig. 4während des Trennens;


  <tb>Fig. 6:<sep>die Vorrichtung der Fig. 4nach dem Verschieben;


  <tb>Fig. 7<sep>eine geeignete Verschlusseinrichtung zum Abdichten der Leitungen beim Trennen; und


  <tb>Fig. 8<sep>eine Darstellung der Endprodukte nach dem Vorgang gemäss der vorliegenden Erfindung.

Stand der Technik und Wege zur Ausführung der Erfindung

  

[0012]    Die Fig. 1 bis 3 zeigen ein bekanntes Verfahren und eine bekannte Vorrichtung zum Verbinden zweier Leitungen 2, 4 aus thermoplastischem Kunststoff, die entweder starr oder vorzugsweise schlauchartig ausgebildet sein können. Die Vorrichtung enthält zwei Halterungen 6, 8, die parallel zueinander verfahrbar sind, wie der Pfeil 10 der Fig. 3 zeigt sowie gegeneinander wie Pfeil 12 ebenfalls in Fig. 3angibt. Jede Halterung 6, 8 enthält Ausnehmungen 14, 16 bzw. 18, 20 zur Aufnahme der miteinander zu verbindenden Leitungen 2, 4. Die Abfallleitungsteile 2a und 4a sind jeweils mit einem Verschluss 22, 24 versehen. Die Halterungen 6, 8 sind mit Abstand voneinander angeordnet, so dass eine beheizte Trennklinge die eingelegten Leitungen 2, 4 thermisch trennen kann, wie dies in Fig. 2dargestellt ist.

   Dabei werden die Trennflächen der Leitungen 2, 4 und ihre Abfallleitungsteile 2a und 4a aufgeschmolzen. Nach dem Entfernen des Trenngliedes 26 werden die Halterungen 6, 8 gemäss Pfeil 10 der Fig. 3 parallel zueinander verfahren bis die zu verbindenden Leitungsteile einander gegenüberstehen und dann gemäss Pfeil 12 gegeneinander verfahren, um die Leitungen 2, 4 durch eine Schweissnaht 28 miteinander zu verbinden, wie aus Fig. 3hervorgeht.

  

[0013]    Nachteilig ist nun, dass die Trennstellen 30, 32 der Abfallleitungsteile 2a, 4a freistehend und offen sind, so dass Reste eines Mediums aus den Abfallleitungsteilen 2a, 4a austreten und Schaden anrichten können. Um diesen Nachteil zu beseitigen, sind das bekannte Verfahren und die bekannte Vorrichtung aus den Figuren1 bis 3 entsprechend den Fig. 4 bis 6 erfindungsgemäss weitergebildet.

  

[0014]    Die Halterungen 6 und 8 weisen zwei zusätzliche Ausnehmungen 34, 36 und 34a, 36a auf, die oberhalb und unterhalb der Ausnehmungen 14, 16, 18 bzw. 20 angeordnet sind, und - im vorliegenden Ausführungsbeispiel - den gleichen Abstand aufweist, wie der Abstand zwischen den Ausnehmungen 14, 16; 18, 20 der zu verbindenden Leitungen 2, 4. In den zusätzlichen Ausnehmungen 34, 36 ist jeweils ein Hilfsleitungsteil 38, 40 angeordnet, der mit einem Verschluss 42, 44 versehen ist. Diese Hilfsleitungsteile 38, 40 sind über die Ebene der Trennklinge 26 hinaus in die gegenüberliegende Halterung in die Ausnehmungen 34a, 36a geführt, wie dies in Fig. 4dargestellt ist. Beim Trennen der Leitungen 2, 4 werden auch die Hilfsleitungsteile 38, 40 durchtrennt, wie dies in Fig. 5gezeigt ist.

   Nach dem Entfernen der Trennklinge 26 werden die Halterungen 6 und 8 gemäss Pfeil 10 parallel zueinander verfahren, bis die Leitungen 2, 4 einander gegenüberstehen. Gleichzeitig stehen aber die Abfallleitungsteile 2a, 4a den verschlossenen Enden der Hilfsleitungsteile 38, 40 gegenüber und beim gegeneinander Bewegen der Halterungen 6, 8 gemäss Pfeil 12 werden nicht nur die Leitungen 2, 4, sondern auch die Abfallleitungsteile 2a, 4a mit den Hilfsleitungsteilen 38, 40 verschweisst. Damit sind auch die Abfallleitungsteile 2a, 4a mittels einer Schweissnaht 46, 48 verschlossen und können entsorgt werden, ohne dass Medium aus den Abfallleitungsteilen 2a, 4a austreten kann. Übrig bleiben in den Ausnehmungen 34a und 36a die mit 38a und 40a bezeichneten Restabschnitte der Hilfsleitungsteile 38, 40.

  

[0015]    Wie in Fig. 7 dargestellt ist, sind die Halterungen 6 und 8 mit den Ausnehmungen 12, 14, 16, 18, 34, 36, 34a, 36a so ausgebildet, dass sich die Ausnehmungen im Bereich der beheizten Klinge 26 verjüngen, so dass die eingelegten Leitungen 2, 4, 38 und 40 dort komprimiert, d.h. zusammengepresst werden. Die Leitungsenden bleiben von der Vorbereitungsphase bis zur Phase des Verschweissens und des nachfolgenden Abkühlens durch das Komprimieren geschlossen. Sie bilden durch das Verschieben und das anschliessende Verschweissen bei ca. 100[deg.]C bis 400[deg.]C abgeschlossene Abfallleitungsteile 2b und 4b aus. Nach dem Öffnen der Halterungen 6 und 8 öffnet sich auch der Durchgang der Schweissverbindung der Leitungen 2, 4 wieder.

  

[0016]    Wie insbesondere in Fig. 8gezeigt ist, verbleiben die neue Leitung 100 mit der Schweissnaht 28, die möglicherweise kontaminierten, aber geschlossenen Abfallleitungsteile 2b und 4b mit den Schweissnähten 46 und 48 sowie die Restabschnitte 38a und 40a.

Bezugszeichenliste

  

[0017]    
<tb>2<sep>Leitung


  <tb>2a, 2b<sep>Abfallleitungsteil


  <tb>3<sep>Nutzleitung nach dem Prozess


  <tb>4<sep>Leitung


  <tb>4a, 4b<sep>Abfallleitungsteil


  <tb>6, 8<sep>Halterung


  <tb>10<sep>Verfahren parallel


  <tb>12<sep>Verfahren gegeneinander


  <tb>14, 16, 18, 20<sep>Ausnehmung


  <tb>22, 24<sep>Verschluss


  <tb>26<sep>Trennklinge


  <tb>28<sep>Schweissnaht


  <tb>30, 32<sep>Trennstelle


  <tb>34, 36<sep>Ausnehmung


  <tb>34a, 36a<sep>Ausnehmung


  <tb>38, 40<sep>Hilfsleitungsteil


  <tb>38a, 40a<sep>Restabschnitte


  <tb>42, 44<sep>Verschluss


  <tb>46, 48<sep>Schweissnaht


  <tb>100<sep>Leitung



  Technical area

  

The invention relates to a method for connecting two lines of thermoplastic by welding according to the preamble of claim 1 and an apparatus for performing the method according to the preamble of claim 5.

State of the art

  

A method and apparatus for welding two lines of thermoplastic material by welding of the type mentioned are known and illustrated in the accompanying Fig. 1 to 3. Two lines to be welded are arranged overlapping each other in two relatively parallel and movable mounts, which are arranged at a distance from each other. Between these holders engages a heated separating blade and separates the lines by melting the plastic. Then the brackets are moved parallel to each other until the separation points of the lines to be connected face each other. Then, the brackets are moved against each other to connect the parting surfaces of the lines together, that is, to fuse together.

   The disadvantage is that the separated waste line parts have free openings from which residual treatment media can escape, which can cause damage in the environment.

Presentation of the invention

  

The object of the invention is to improve a method and an apparatus of the type mentioned on.

  

The task is solved:
<tb> a) <sep> In the method mentioned by the features of claim 1 essential to the invention;


  <b> <b> <sep> in the device mentioned at the outset by the characterizing features of claim 5.

  

The measures of the invention initially have the consequence that the waste line parts are closed in the course of welding the pipe parts, so that no impurities can get out of the waste line parts in the environment to do damage there. This is essentially achieved in that the holders on both sides - preferably the same distance as the distance between the recesses of the lines to be connected - each having a further recess for receiving an auxiliary line part, the auxiliary line parts are also detected by the separating blade and after the separation and method of the holder, the waste line parts each face a closed auxiliary line part and these are connected to each other, are.

  

Advantageous embodiments of the method are described in claims 2 to 4, and 6 and 7.

  

It is advantageous if all lines are compressed so far from the preparation phase to the phase of welding and the subsequent cooling that they are closed during this time (claim 2 or 6).

  

According to claim 3, the auxiliary line parts are advantageously each separate, at least closed at one end, non-contaminated line sections.

  

The auxiliary line parts are guided according to claim 4 or 7 beyond the parting plane out into the opposite brackets and also separated.

  

The above-mentioned and the claimed and described in the following embodiments, according to the invention to be used elements are subject to their size, shape, material usage and their technical conception no special conditions of exception, so that the well-known in the respective field of application selection criteria can be applied without restriction.

Brief description of the drawings

  

Hereinafter, the prior art (Fig.1bis 3) and on the other hand embodiments of the invention (Figs. 4 to 6) described in more detail with reference to the drawings, in which:
<Tb> FIG. 1 <sep> a device with two lines to be connected in basic position and in plan view;


  <Tb> FIG. Fig. 2: <sep> the device of Fig. 1 during disconnection;


  <Tb> FIG. 3: <sep> the device of Fig. 1 during welding;


  <Tb> FIG. 4: <sep> the device of Figure 1 with a further receptacle for an auxiliary line part in the basic position.


  <Tb> FIG. 5: <sep> the device of Fig. 4 during disconnection;


  <Tb> FIG. Fig. 6: <sep> the device of Fig. 4 after shifting;


  <Tb> FIG. 7 <sep> a suitable closure device for sealing the lines during separation; and


  <Tb> FIG. 8 is a representation of the end products after the process according to the present invention.

State of the art and ways of carrying out the invention

  

1 to 3 show a known method and a known device for connecting two lines 2, 4 made of thermoplastic material, which may be formed either rigid or preferably tubular. The device comprises two holders 6, 8, which are movable parallel to each other, as the arrow 10 of FIG. 3 shows and against each other like arrow 12 also in Fig. 3angibt. Each holder 6, 8 contains recesses 14, 16 and 18, 20 for receiving the lines 2, 4 to be connected to one another. The waste line parts 2a and 4a are each provided with a closure 22, 24. The brackets 6, 8 are spaced apart so that a heated severing blade can thermally segregate the inlaid conduits 2, 4, as shown in FIG.

   In this case, the separating surfaces of the lines 2, 4 and their waste line parts 2a and 4a are melted. After removal of the separating member 26, the brackets 6, 8 according to arrow 10 of FIG. 3 are moved parallel to each other until the line parts to be joined face each other and then according to arrow 12 against each other to connect the lines 2, 4 by a weld 28 with each other as shown in FIG. 3.

  

The disadvantage is that the separation points 30, 32 of the waste line parts 2a, 4a are free-standing and open, so that residues of a medium from the waste line parts 2a, 4a escape and can cause damage. In order to eliminate this disadvantage, the known method and the known device from FIGS. 1 to 3 according to FIGS. 4 to 6 are developed according to the invention.

  

The brackets 6 and 8 have two additional recesses 34, 36 and 34a, 36a, which are arranged above and below the recesses 14, 16, 18 and 20, and - in the present embodiment - the same distance, as the distance between the recesses 14, 16; 18, 20 of the lines 2, 4 to be connected. In the additional recesses 34, 36, an auxiliary line part 38, 40 is arranged, which is provided with a closure 42, 44. These auxiliary line parts 38, 40 are guided beyond the plane of the separating blade 26 into the opposite support in the recesses 34a, 36a, as shown in Fig. 4dargestellt. When separating the lines 2, 4 and the auxiliary line parts 38, 40 are severed, as shown in Fig. 5.

   After removal of the separating blade 26, the holders 6 and 8 are moved parallel to each other according to arrow 10 until the lines 2, 4 face each other. At the same time, however, the waste pipe parts 2a, 4a face the closed ends of the auxiliary pipe parts 38, 40, and when the holders 6, 8 are moved relative to each other according to arrow 12, not only the pipes 2, 4 but also the waste pipe parts 2a, 4a with the auxiliary pipe parts 38, 40 welded. Thus, the waste line parts 2a, 4a are closed by means of a weld 46, 48 and can be disposed of without the medium from the waste line parts 2a, 4a can escape. Remain in the recesses 34a and 36a, the designated with 38a and 40a remaining portions of the auxiliary line parts 38, 40th

  

As shown in Fig. 7, the holders 6 and 8 with the recesses 12, 14, 16, 18, 34, 36, 34 a, 36 a are formed so that the recesses taper in the region of the heated blade 26, so that the inserted lines 2, 4, 38 and 40 are compressed there, ie be pressed together. The line ends remain closed from the preparation phase to the phase of welding and subsequent cooling by compression. They form by moving and the subsequent welding at about 100 ° C to 400 ° C completed waste line parts 2b and 4b. After opening the brackets 6 and 8, the passage of the welded connection of the lines 2, 4 opens again.

  

As particularly shown in Fig. 8, the new conduit 100 remains with the weld 28, the possibly contaminated but closed waste conduit portions 2b and 4b with the welds 46 and 48 and the remainder portions 38a and 40a.

LIST OF REFERENCE NUMBERS

  

[0017]
<Tb> 2 <sep> Line


  <tb> 2a, 2b <sep> waste pipe part


  <tb> 3 <sep> power line after the process


  <Tb> 4 <sep> Line


  <tb> 4a, 4b <sep> waste pipe part


  <tb> 6, 8 <sep> bracket


  <tb> 10 <sep> procedures in parallel


  <tb> 12 <sep> Proceeding against each other


  <tb> 14, 16, 18, 20 <sep> recess


  <tb> 22, 24 <sep> closure


  <Tb> 26 <sep> Release Blade


  <Tb> 28 <sep> weld


  <tb> 30, 32 <sep> separation point


  <tb> 34, 36 <sep> recess


  <tb> 34a, 36a <sep> recess


  <tb> 38, 40 <sep> auxiliary part


  <tb> 38a, 40a <sep> Remainders


  <tb> 42, 44 <sep> closure


  <tb> 46, 48 <sep> Welding seam


  <Tb> 100 <sep> Line


    

Claims (7)

1. Verfahren zum Verbinden zweier Leitungen (2, 4) aus thermoplastischem Kunststoff durch Verschweissen, wobei die zu verschweissenden Leitungen (2, 4) einander überlappend in zwei relativ und parallel zueinander verfahrbaren Halterungen (6, 8) angeordnet und mittels einer beheizten Trennklinge (26) unter Aufschmelzen des Kunststoffes gemeinsam durchtrennt werden, wobei daraufhin die Halterungen (6, 8) parallel soweit gegeneinander verfahren werden (10, 12), bis die Trennstellen der zu verbindenden Leitungen (2, 4, 100) einander gegenüberstehen, wobei dann die Halterungen (6, 8) gegeneinander verfahren werden, um die Trennflächen der Leitungen (2, 4) miteinander zu verschmelzen, dadurch gekennzeichnet, dass an den Halterungen (6, 8) oberhalb und unterhalb der Leitungen (2, 4) Hilfsleitungsteile (38, 40) so angeordnet sind, dass die Hilfsleitungsteile (38, 40) von der Trennklinge (26) 1. A method for connecting two lines (2, 4) of thermoplastic by welding, wherein the lines to be welded (2, 4) overlapping each other in two relatively parallel and movable mounts (6, 8) and arranged by means of a heated separating blade ( 26) are severed together with melting of the plastic, wherein then the holders (6, 8) are moved parallel as far against each other (10, 12) until the separation points of the lines to be connected (2, 4, 100) face each other, in which case Mounts (6, 8) are moved against each other to merge the parting surfaces of the lines (2, 4), characterized in that on the brackets (6, 8) above and below the lines (2, 4) auxiliary line parts (38, 40) are arranged so that the auxiliary line parts (38, 40) of the separating blade (26) ebenfalls erfasst werden und nach dem Trennen und Verfahren der Halterungen (6, 8) verbleibende Abfallleitungsteile (2a, 4a) jeweils einem geschlossenen Hilfsleitungsteil (38, 42; 40, 44) gegenüberstehen und diese miteinander verschweisst werden.  are also detected and after the separation and process of the holders (6, 8) remaining waste line parts (2a, 4a) each face a closed auxiliary line part (38, 42, 40, 44) and these are welded together. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Leitungen (2, 4) und vorzugsweise auch Hilfsleitungsteile (38, 40) von der Vorbereitungsphase bis zur Phase des Verschweissens und des nachfolgenden Abkühlens alle Leitungen so weit komprimiert werden, dass sie während dieser Zeit geschlossen sind. 2. The method according to claim 1, characterized in that the lines (2, 4) and preferably also auxiliary line parts (38, 40) from the preparation phase to the phase of welding and the subsequent cooling all lines are compressed so far that they during this Time are closed. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Hilfsleitungsteile (38, 40) jeweils separate, zumindest an einem Ende geschlossene (42, 44), nicht kontaminierte Leitungsabschnitte sind. 3. The method according to claim 1 or 2, characterized in that the auxiliary line parts (38, 40) are each separate, at least at one end closed (42, 44), non-contaminated line sections. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Hilfsleitungsteile (38, 40) über die Trennebene hinaus in die gegenüberliegenden Halterungen (6, 8) geführt sind. 4. The method according to claim 3, characterized in that the auxiliary line parts (38, 40) over the parting plane out into the opposite brackets (6, 8) are guided. 5. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, mit zwei im Abstand voneinander angeordneten, parallel zueinander und gegeneinander verfahrbaren Halterungen (6, 8), die jeweils Ausnehmungen (14, 16, 18, 20) zur parallelen Aufnahme von Leitungen aufweisen und zwischen denen eine beheizbare Trennklinge (26) aus- und einfahrbar ist, dadurch gekennzeichnet, dass die Halterungen (6, 8) auf jeder Seite vorzugsweise im gleichen Abstand wie der Abstand zwischen die Ausnehmungen (14, 16, 18, 20) der zu verbindenden Leitungen (2, 4) eine weitere Ausnehmung (34, 34a, 36, 36a) für die Aufnahme eines Hilfsleitungsteiles (38, 40) aufweisen. 5. Apparatus for carrying out the method according to claim 1, with two spaced apart, mutually parallel and mutually movable brackets (6, 8), each having recesses (14, 16, 18, 20) for receiving parallel lines and between in which a heatable separating blade (26) is extendable and retractable, characterized in that the holders (6, 8) on each side preferably at the same distance as the distance between the recesses (14, 16, 18, 20) of the lines to be connected (2, 4) have a further recess (34, 34a, 36, 36a) for receiving an auxiliary line part (38, 40). 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass sie so ausgebildet ist, dass sie Mittel zum Komprimieren aller Leitungen (2, 4, 38, 40) von der Vorbereitungsphase bis zur Phase des Verschweissens und des nachfolgenden Abkühlens aufweist. A device according to claim 5, characterized in that it is designed to have means for compressing all lines (2, 4, 38, 40) from the preparation phase to the phase of fusion and subsequent cooling. 7. Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass jeweils eine der zusätzlichen Ausnehmungen (34a, 36a) in der Halterung (6, 8) endet, während die andere der zusätzlichen Ausnehmungen (34, 36) durch die benachbarte Halterung (6, 8) hindurch geführt ist. 7. Apparatus according to claim 5 or 6, characterized in that in each case one of the additional recesses (34a, 36a) in the holder (6, 8) ends, while the other of the additional recesses (34, 36) by the adjacent holder (6 , 8) is guided through.
CH01499/06A 2006-09-20 2006-09-20 Thermoplastic resin pipes connecting method, involves arranging auxiliary pipe parts at holders, providing waste pipe parts opposite to pipe parts after separation and moving of holders, and welding waste pipe parts with each other CH698798B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH01499/06A CH698798B1 (en) 2006-09-20 2006-09-20 Thermoplastic resin pipes connecting method, involves arranging auxiliary pipe parts at holders, providing waste pipe parts opposite to pipe parts after separation and moving of holders, and welding waste pipe parts with each other

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01499/06A CH698798B1 (en) 2006-09-20 2006-09-20 Thermoplastic resin pipes connecting method, involves arranging auxiliary pipe parts at holders, providing waste pipe parts opposite to pipe parts after separation and moving of holders, and welding waste pipe parts with each other

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Publication number Priority date Publication date Assignee Title
WO2015060774A1 (en) * 2013-10-24 2015-04-30 Ge Healthcare Bio-Sciences Ab Apparatus for connection of thermoplastic tubing
CH711822A1 (en) * 2015-11-30 2017-05-31 Reed Electronics Ag Device for welding thermoplastic hoses.
WO2022256404A1 (en) * 2021-06-02 2022-12-08 Sotio Biotech Inc. Connection welding for automated sterile connection and fluid transfer

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US4864101A (en) * 1987-01-09 1989-09-05 Denco, Inc. Hybrid welding wafer
EP0471953A2 (en) * 1990-08-20 1992-02-26 Denco, Inc. Sterile entry/exit total containment process for closed systems using plastic tubes
EP0507321A1 (en) * 1991-04-05 1992-10-07 Terumo Kabushiki Kaisha Method and apparatus for joining tubes

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EP0134630A1 (en) * 1983-06-13 1985-03-20 E.I. Du Pont De Nemours And Company Sterile docking process, apparatus and system for thermoplastic resin tubes
US4864101A (en) * 1987-01-09 1989-09-05 Denco, Inc. Hybrid welding wafer
EP0471953A2 (en) * 1990-08-20 1992-02-26 Denco, Inc. Sterile entry/exit total containment process for closed systems using plastic tubes
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Publication number Priority date Publication date Assignee Title
WO2015060774A1 (en) * 2013-10-24 2015-04-30 Ge Healthcare Bio-Sciences Ab Apparatus for connection of thermoplastic tubing
US10183447B2 (en) 2013-10-24 2019-01-22 Ge Healthcare Bio-Sciences Ab Apparatus for connection of thermoplastic tubing
CH711822A1 (en) * 2015-11-30 2017-05-31 Reed Electronics Ag Device for welding thermoplastic hoses.
WO2017093216A1 (en) * 2015-11-30 2017-06-08 Reed Electronics Ag Device for welding tubes
CN108883582A (en) * 2015-11-30 2018-11-23 睿德电子股份公司 Equipment for welding hose
US20180345589A1 (en) * 2015-11-30 2018-12-06 Reed Electronics Ag Device for welding tubes
RU2720789C2 (en) * 2015-11-30 2020-05-13 Рид Электроникс Аг Device for tubes welding
US11077623B2 (en) 2015-11-30 2021-08-03 Reed Electronics Ag Device for welding tubes
CN108883582B (en) * 2015-11-30 2022-04-12 睿德电子股份公司 Device for welding hoses
WO2022256404A1 (en) * 2021-06-02 2022-12-08 Sotio Biotech Inc. Connection welding for automated sterile connection and fluid transfer

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