NO20200117A1 - - Google Patents

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Publication number
NO20200117A1
NO20200117A1 NO20200117A NO20200117A NO20200117A1 NO 20200117 A1 NO20200117 A1 NO 20200117A1 NO 20200117 A NO20200117 A NO 20200117A NO 20200117 A NO20200117 A NO 20200117A NO 20200117 A1 NO20200117 A1 NO 20200117A1
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Norway
Prior art keywords
welding
wire
welded
path
along
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NO20200117A
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Norwegian (no)
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Priority to NO20200117A priority Critical patent/NO20200117A1/no
Priority to NO20220794A priority patent/NO20220794A1/en
Priority to PCT/NO2021/050031 priority patent/WO2021154094A1/en
Publication of NO20200117A1 publication Critical patent/NO20200117A1/no

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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
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3432Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C65/34Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3444Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a ribbon, band or strip
    • 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
    • B29C65/34Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • 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
    • B29C65/34Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • 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
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
    • 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap 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
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832Reciprocating joining or pressing tools
    • B29C66/8322Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832Reciprocating joining or pressing tools
    • B29C66/8322Joining or pressing tools reciprocating along one axis
    • B29C66/83221Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824Actuating mechanisms
    • B29C66/8242Pneumatic or hydraulic drives
    • 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
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824Actuating mechanisms
    • B29C66/8248Pressure application by weights
    • 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
    • B29K2705/00Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/08Transition metals
    • B29K2705/10Copper

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

Description

Beskrivelse Description

Fagfelt Professional field

[001] Oppfinnelsen angår sveising av termoplast, mer presist et sveisesystem for sveising av termoplast ved hjelp av sveisetråd eller sveisebånd av metall som påføres sveisebanen [001] The invention relates to the welding of thermoplastics, more precisely a welding system for welding thermoplastics by means of welding wire or metal welding tape that is applied to the welding path

og som oppvarmes ved hjelp av strøm og resistans i sveisetråden eller sveisebåndet. and which is heated using current and resistance in the welding wire or welding tape.

Bakgrunn Background

[002] Oppfinner jobber til daglig med konstruksjoner av termoplast og mange arbeidstimer i bedriften går med til sveising av termoplast. Dagens sveisemetode omfatter bruk av sveiseapparat som varmer opp et punkt ved hjelp av varmluft og/eller kontakt med en varm flate. Sveisepunktet flyttes bortover langs sveisebanene. Det benyttes såkalte ekstrudere hvor en oppvarmet/smeltet sveisesveisetråd presses ut på en oppvarmet sveisebane av termoplast eller termoplasten varmes opp og presses sammen uten sveisetråd. [002] The inventor works on a daily basis with constructions of thermoplastics and many working hours in the company are spent welding thermoplastics. Today's welding method includes the use of welding equipment that heats up a point using hot air and/or contact with a hot surface. The welding point is moved further along the welding paths. So-called extruders are used where a heated/melted welding wire is pushed out onto a heated welding path made of thermoplastic or the thermoplastic is heated and pressed together without welding wire.

[003] Det er kjent fra f.eks. EP 0281347 B1 å feste termoplast ved hjelp av elektrisk ledende sveisetråder som varmes opp ved hjelp av resistans. Videre er det kjent fra US2012/0231272 å anvende en ‘sveiseelektrode’ laget av en elektrisk ledende sveisetråd omhyllet av termoplast til såkalt termoplastisk elektrofusjonssveising. [003] It is known from e.g. EP 0281347 B1 to attach thermoplastics by means of electrically conductive welding wires which are heated by means of resistance. Furthermore, it is known from US2012/0231272 to use a 'welding electrode' made of an electrically conductive welding wire sheathed in thermoplastic for so-called thermoplastic electrofusion welding.

Kort oppsummering av oppfinnelsen Brief summary of the invention

[004] Oppfinnelsen beskriver et sveisesystem for sveising av termoplast langs en sveisebane omfattende en sveiseledning omfattende minst ett fleksibelt sveisebånd eller minst én sveisetråd, begge av metall som kan varmes opp ved elektrisk resistans. [004] The invention describes a welding system for welding thermoplastics along a welding path comprising a welding line comprising at least one flexible welding band or at least one welding wire, both of metal which can be heated by electrical resistance.

Videre omfatter sveisesystemet festemidler for å feste sveiseledningen langs sveisebanen og trykkpåføringsmidler for å trykke termoplastdelene som skal sveises sammen. Videre omfatter sveisesystemet en justerbar strømkilde for å varme opp sveiseledningen til ønsket temperatur og kontaktmidler for å opprette en elektrisk krets gjennom sveiseledningen ved hjelp av strømkilden. Sveiseledning påføres ved minst én av de tre følgende lokasjoner: Langs sveisebanen mellom de to termoplastdelene som skal sveises. Hvis minst én av termoplastdelene som skal sveises er tynne, på yttersiden langs sveisebanen av én av de tynne termoplastdelene som skal sveises. Hvis minst én av termoplastdelene som skal sveises er tynne, på minst én pressbjelke som trykkes inntil yttersiden langs sveisebanen av én av de tynne termoplastdelene (2, 3) som skal sveises ved hjelp av trykkpåføringsmidlene. Furthermore, the welding system comprises fastening means for fastening the welding wire along the welding path and pressure application means for pressing the thermoplastic parts to be welded together. Furthermore, the welding system comprises an adjustable power source to heat the welding wire to the desired temperature and contact means to create an electrical circuit through the welding wire by means of the power source. Welding wire is applied at at least one of the following three locations: Along the welding path between the two thermoplastic parts to be welded. If at least one of the thermoplastic parts to be welded is thin, on the outside along the welding path of one of the thin thermoplastic parts to be welded. If at least one of the thermoplastic parts to be welded is thin, on at least one pressure beam which is pressed against the outer side along the welding path of one of the thin thermoplastic parts (2, 3) to be welded by means of the pressure application means.

Kort beskrivelse av figurene Brief description of the figures

[005] For bedre forståelse av oppfinnelsen har vi laget noen tegninger som viser noen utførelsesformer av oppfinnelsen. I disse figurene viser samme referansetall til samme trekk i forskjellige figurer. [005] For a better understanding of the invention, we have made some drawings that show some embodiments of the invention. In these figures, the same reference number refers to the same feature in different figures.

[006] [006]

Figur 1 viser sveisetråder som er plassert mellom to termoplastdeler som skal sveises sammen. Figure 1 shows welding wires that are placed between two thermoplastic parts to be welded together.

Figur 2 viser sveisebånd som er plassert mellom to termoplastdeler som skal sveises sammen. Figure 2 shows welding tape which is placed between two thermoplastic parts to be welded together.

Figur 3 viser innføring av et teflonlag mellom sveisebånd og termoplastdelene som skal sveises. Figure 3 shows the introduction of a Teflon layer between the welding tape and the thermoplastic parts to be welded.

Figur 4 viser anvendelse av en ters til å påføre trykk til sveisen. Figure 4 shows the use of a tester to apply pressure to the weld.

Figur 5 viser anvendelse av sveisetråd mellom to rør som skal sveises sammen og som presses sammen ved hjelp av stropper. Figure 5 shows the use of welding wire between two pipes which are to be welded together and which are pressed together using straps.

Figur 6a, b og c viser forskjellige former for skjøting av fleksible termoplastduker. Figure 6a, b and c show different forms of splicing of flexible thermoplastic fabrics.

Figur 7 viser anvendelse av en tvinge som trykkpåføringsmiddel og to pressbjelker som fordeler trykket langs sveisebanen. Figure 7 shows the use of a clamp as a means of applying pressure and two pressure beams which distribute the pressure along the welding path.

Figur 8 Viser en seksjon av duker som skjøtes ved hjelp av tvinger to pressbjelker og en strømkilde med kontaktmidler. Figure 8 shows a section of cloths that are joined by means of forceps, two press beams and a power source with contact means.

Figur 9 viser et eksempel på en H-formet sveiselist. Figure 9 shows an example of an H-shaped welding strip.

Figur 10 a og b viser en T-formet sveiselist henholdsvis ovenfra og i tverrsnitt. Figure 10 a and b shows a T-shaped welding strip from above and in cross section, respectively.

Detaljert beskrivelse Detailed description

[007] Oppfinnelsen beskriver et sveisesystem for sveising av termoplast. I mangel av en felles betegnelse for tråd og bånd anvender vi ordet sveiseledning 1 som i denne teksten betyr én eller flere fleksible sveisetråder 1b eller sveisebånd 1a av metall som kan varmes opp ved hjelp av tilført strøm. En sveiselinje er den linjen på de respektive termoplastdeler 2, 3 som det skal sveises langs eller linjen hvor de to delene er sveiset sammen. [007] The invention describes a welding system for welding thermoplastics. In the absence of a common term for wire and tape, we use the word welding wire 1 which in this text means one or more flexible welding wires 1b or welding tape 1a made of metal that can be heated using supplied current. A welding line is the line on the respective thermoplastic parts 2, 3 along which it is to be welded or the line where the two parts are welded together.

[008] Systemet omfatter en sveiseledning 1 som omfatter minst ett fleksibelt sveisebånd 1a eller sveisetråd 1b som kan varmes opp ved elektrisk resistans. [008] The system comprises a welding line 1 which comprises at least one flexible welding band 1a or welding wire 1b which can be heated by electrical resistance.

Sveisebåndet eller sveisetråden kan være laget av mange forskjellige metalltyper, men det er en stor fordel at sveiseledningen 1 kan bøyes og endre retning når det påføres termoplasten som skal sveises. Sveisesystemet kan brukes både på tynnere duker av termoplast, slik som geomembraner, og på faste strukturer av termoplast, slik som båter, oppdrettsanlegg eller rørkonstruksjoner. The welding tape or welding wire can be made of many different types of metal, but it is a great advantage that the welding wire 1 can be bent and change direction when it is applied to the thermoplastic to be welded. The welding system can be used both on thinner sheets of thermoplastic, such as geomembranes, and on fixed structures of thermoplastic, such as boats, fish farms or pipe structures.

[009] I en utførelsesform er metallet i sveiseledningen kobber. En typisk tykkelse av et sveisebånd av kobber vil være fra 0,2 mm til 1 mm. Kobber har vist seg å fungere bra med hensyn til pris, resistans, fleksibilitet og tilstrekkelig motstandsdyktighet mot mekaniske påvirkninger. [009] In one embodiment, the metal in the welding line is copper. A typical thickness of a welding strip of copper will be from 0.2 mm to 1 mm. Copper has proven to perform well in terms of price, resistance, flexibility and sufficient resistance to mechanical influences.

[010] Ved anvendelse av sveisetråder i stedet for sveisebånd har vi oppnådd gode resultater med sveisetråder av kobber som er 0,5 - 2 mm i diameter. Fordelen med sveisetråder fremfor sveisebånd er at en mindre andel av sveisen annulleres på grunn av sveisetrådens mindre utstrekning i bredden. Vanligvis vil ikke sveiseledningen feste seg særlig godt til termoplasten. [010] When using welding wires instead of welding tape, we have achieved good results with copper welding wires that are 0.5 - 2 mm in diameter. The advantage of welding wires over welding tape is that a smaller proportion of the weld is canceled due to the welding wire's smaller width. Generally, the welding wire will not adhere very well to the thermoplastic.

[011] Bredden på sveisebåndet er i størrelsesorden 2-20 mm. Hvis det blir for bredt vil det være vanskelig å lage en kurve med sveisebåndet uten og krølle det og dermed bevirke ujevn oppvarming av termoplasten. Der hvor sveisebåndet er festet vil det som antydet ikke bli et bruddsterkt feste mellom to deler 2, 3 av termoplast som skal sveises, også av denne årsak bør ikke sveisebåndet være for bredt. En god løsning er to metallsveisebånd som løper parallelt langs sveisebanen. På denne måten oppstår det tre parallelle sveiselinjer som gir en stabil og god konstruksjon. [011] The width of the welding band is in the order of 2-20 mm. If it becomes too wide, it will be difficult to make a curve with the welding tape without curling it and thus causing uneven heating of the thermoplastic. Where the welding tape is attached, as indicated, there will not be an unbreakable attachment between two parts 2, 3 of thermoplastic to be welded, also for this reason the welding tape should not be too wide. A good solution is two metal welding bands that run parallel along the welding path. In this way, three parallel welding lines are created, which gives a stable and good construction.

[012] I kjente sveisemetoder av termoplast anvendes gjerne et verktøy som oppvarmer termoplasten raskt og flyttes langs sveisebanen med jevn fart. Dette gir en styrke i sveisen på typisk 60 % av det usveisede materialet. Metoden i henhold til oppfinnelsen gir en styrke på lagom 80 % av det usveisede materiale. Årsaken til dette ligger i at det er en langsom og mer homogen oppvarming som foregår samtidig over hele sveisebanen mens det ved punktsveisning blir en rask oppvarming som er vanskelig å få homogen. Det vil si at sveising med punktsveising i større grad er avhengig av en dyktig og utholdende håndverker / sveiser. Hvis konstruksjonen som skal sveises tillater det, kan termoplasten også bøyes langs sveisebanene under sveising til en ønsket vinkel. Dette lar seg av opplagte årsaker ikke gjøre ved vanlig sveising hvor hele lengden ikke er oppvarmet samtidig. [012] In known welding methods of thermoplastics, a tool is often used which heats the thermoplastic quickly and is moved along the welding path at a steady speed. This gives a strength in the weld of typically 60% of the unwelded material. The method according to the invention gives a strength of about 80% of the unwelded material. The reason for this lies in the fact that there is a slow and more homogeneous heating that takes place simultaneously over the entire welding path, while spot welding results in rapid heating that is difficult to achieve homogeneously. This means that welding with spot welding is largely dependent on a skilled and persistent craftsman / welder. If the structure to be welded allows it, the thermoplastic can also be bent along the welding paths during welding to a desired angle. For obvious reasons, this cannot be done with normal welding where the entire length is not heated at the same time.

[013] Sveisesystemet omfatter videre festemidler for å gjøre det mulig å feste sveisebåndet 1a eller sveisetråden 1b til en ønsket gjenstand. I én utførelsesform, ved anvendelse av sveisebånd er festemidlene et lim som festes på minst én side av sveisebåndet slik at sveisebåndet fremstår som en metalltape. Ved anvendelse av sveisetråd 1b freses eller skjæres et spor eller sveisetrådrenne 9 i denne ene platen som skal sammenføyes, sveisetrådrennen holder sveisetråden fast under montering og oppvarming slik at den ikke flytter seg ut av posisjon. [013] The welding system further comprises fasteners to make it possible to attach the welding tape 1a or the welding wire 1b to a desired object. In one embodiment, when using welding tape, the fixing means is an adhesive which is attached to at least one side of the welding tape so that the welding tape appears as a metal tape. When using welding wire 1b, a groove or welding wire channel 9 is milled or cut in this one plate to be joined, the welding wire channel holds the welding wire firmly during assembly and heating so that it does not move out of position.

[014] For å oppnå et ønsket trykk ved sveising omfatter systemet trykkpåføringsmidler 4. Trykkpåføringsmidlene kan være vekter, tvinger 4c, stropper 4a eller terser 4b, gjerne i kombinasjon med pressbjelker 7 for å fordele trykket langs sveisebanen. Trykket regnes ut iht. til standard for termoplastsveising. Momentnøkkel brukes for å kontrollere trykket, når man bruker ters eller tvinger. [014] In order to achieve a desired pressure during welding, the system includes pressure application means 4. The pressure application means can be weights, forceps 4c, straps 4a or cutters 4b, preferably in combination with pressure beams 7 to distribute the pressure along the welding path. The pressure is calculated according to to the standard for thermoplastic welding. A torque wrench is used to control the pressure, when using ters or forceps.

[015] Som vist i figur 4 kan det brukes sugekopper påmontert en ters 4b som trykkpåføringsmidler 4 ved sammensveising av stive legemer. I én utførelse omfatter trykkpåføringsmidelene en sugekopp festet på hver sin ende av en arm med en skrue eller jekkemekanisme i midten, hvor skrue eller jekkemekanismen trykker mot området som skal sveises enten direkte på konstruksjonen eller via en pressbjelke som fordeler trykket langs sveisebanen. [015] As shown in Figure 4, suction cups mounted on a third 4b can be used as pressure application means 4 when welding rigid bodies together. In one embodiment, the pressure application means comprise a suction cup attached to each end of an arm with a screw or jack mechanism in the middle, where the screw or jack mechanism presses against the area to be welded either directly on the structure or via a pressure beam that distributes the pressure along the weld path.

[016] Sveiseledningen festes mellom de to delene 2, 3 som skal sveises eller på én av yttersidene hvis termoplasten ikke er for tjukk. Ved sveising av duker og membraner påføres sveiseledningen 1 fortrinnsvis på yttersiden langs sveisebanen til én eller begge av termoplastdelene som skal sveises. I en annen utførelsesform påføres sveiseledningen 1, fortrinnsvis et sveisebånd 1a, på minst én av en første og andre pressbjelke 7a, 7b, hvor den første pressbjelke legges direkte ovenfor den andre med de to delene som skal sveises imellom. Dette kan gjøres på en del forskjellige måter som vist i figurene 6a, 6b og 7. Figur 6a og b viser løsninger hvor et sveisebånd 1a er festet til en pressbjelke og et teflonlag 8 er festet utenpå sveisebåndet. Teflonlaget hindrer at sveisebåndet festes til termoplasten etter oppvarming. Figur 6c viser en utførelsesform hvor fliker fra hver termoplastdel legges oppå hverandre på et flatt gulv. [016] The welding wire is attached between the two parts 2, 3 to be welded or on one of the outer sides if the thermoplastic is not too thick. When welding cloths and membranes, the welding wire 1 is preferably applied to the outside along the welding path of one or both of the thermoplastic parts to be welded. In another embodiment, the welding line 1, preferably a welding band 1a, is applied to at least one of a first and second press beam 7a, 7b, where the first press beam is placed directly above the other with the two parts to be welded between. This can be done in a number of different ways as shown in figures 6a, 6b and 7. Figures 6a and b show solutions where a welding band 1a is attached to a pressure beam and a Teflon layer 8 is attached to the outside of the welding band. The Teflon layer prevents the welding tape from sticking to the thermoplastic after heating. Figure 6c shows an embodiment where tabs from each thermoplastic part are placed on top of each other on a flat floor.

[017] I en utførelsesform trekkes en flik fra hver duk, som skal sveises sammen, opp og sammen. Den ene fliken trekkes ca. dobbelt så langt opp som den andre og foldes over den andre fliken. En første pressbjelke 7a med sveisebånd 1a legges så inntil den andre fliken som er foldet over den første fliken og en andre pressbjelke 7b legges inntil motsatt side av folden som er oppstått og press påføres med tvinger eller klemmer. [017] In one embodiment, a tab is pulled from each cloth, which is to be welded together, up and together. One tab is pulled approx. twice as far up as the other and folded over the other flap. A first pressure beam 7a with welding tape 1a is then placed next to the second flap which is folded over the first flap and a second pressure beam 7b is placed next to the opposite side of the fold that has occurred and pressure is applied with forceps or clamps.

[018] I en annen utførelse, vist i figur 6b, trekkes to like store fliker fra hver termoplastduk opp og sammen. Deretter foldes en skjøtedel 10 over de to flikene i dukene og det anvendes en første og andre pressbjelke 7a og 7b som begge har sveisebånd påmontert. Hvis det er akseptabelt at en skjøteflik står opp etter endt arbeid er det mulig å sveise dukene direkte sammen uten skjøtedel. [018] In another embodiment, shown in figure 6b, two equally sized flaps from each thermoplastic cloth are pulled up and together. Then, a joint part 10 is folded over the two flaps in the cloths and a first and second pressure beam 7a and 7b are used, both of which have welding tape attached. If it is acceptable for a joint flap to stand up after work has been completed, it is possible to weld the sheets directly together without a joint part.

[019] Figur 7 viser en utførelse hvor det anvendes sveisetråder 1b mellom dukene og derfor intet sveisebånd på pressbjelkene som påføres trykk ved hjelp av en tvinge. I denne utførelsen blir sveisetråden liggende i duken etter sveising. [019] Figure 7 shows an embodiment where welding wires 1b are used between the cloths and therefore no welding band on the pressure beams which are applied with pressure by means of a clamp. In this version, the welding wire remains in the cloth after welding.

[020] Ved sveising av termoplast av mer strukturell / stivere karakter er trykkpåføringsmidlene 4 fortrinnsvis minst én av vekter, stropper 4a og tvinger 4c, hvor det også kan være fordelaktig å anvende disse i kombinasjon med pressbjelker 7 som fordeler trykket langs sveisebanen. [020] When welding thermoplastics of a more structural / stiffer nature, the pressure application means 4 are preferably at least one of weights, straps 4a and forceps 4c, where it can also be advantageous to use these in combination with pressure beams 7 which distribute the pressure along the welding path.

[021] Når det fleksible sveisebåndet 1a ikke påføres termoplastdelene som skal sveises, men påføres f. eks en pressbjelke 7 er det fordelaktig med et avstøtende lag f.eks. et teflonlag 8 mellom sveisebanen og sveisebåndet. På den måten unngås det at det fleksible sveisebåndet rives av pressbjelken under demontering ved utført sveising og pressbjelken er umiddelbart klar til bruk. [021] When the flexible welding tape 1a is not applied to the thermoplastic parts to be welded, but applied to e.g. a pressure beam 7, it is advantageous to have a repellent layer e.g. a Teflon layer 8 between the welding path and the welding band. In this way, it is avoided that the flexible welding band is torn from the press beam during disassembly when welding has been carried out and the press beam is immediately ready for use.

[022] Ved anvendelse av fleksibel sveisetråd på stivere/fastere konstruksjoner er det fordelaktig å frese ut eller skjære sveisetrådrenner 9 langs sveisebanen som sveisetråden 1b kan legges ned i. Denne utførelsesformen muliggjør at sveisetrådene holdes på plass mens termoplastdelene manøvreres til riktig posisjon. [022] When using flexible welding wire on stiffer/firmer structures, it is advantageous to mill out or cut welding wire channels 9 along the welding path into which the welding wire 1b can be laid. This embodiment enables the welding wires to be held in place while the thermoplastic parts are maneuvered into the correct position.

[023] Ved strømbrudd må sveisebanen bli kald før prosessen gjenopptas, for å være sikker på at korrekt sveisetemperatur oppnås og ikke overstiges. [023] In the event of a power failure, the welding path must be cooled before the process is resumed, to be sure that the correct welding temperature is achieved and not exceeded.

[024] Videre omfatter sveisesystemet en justerbar strømkilde for å varme opp metallsveisebåndet til ønsket temperatur og kontaktmidler for å opprette en elektrisk krets gjennom sveiseledningen 1 ved hjelp av strømkilden. Kontaktmidlene 6 vil typisk være to elektrisk ledende klemmer som festes til hver sin ende av sveiseledningen og til hver sin ledning som fører til hver sin pol på den justerbare strømkilden. [024] Furthermore, the welding system comprises an adjustable power source to heat the metal welding band to the desired temperature and contact means to create an electric circuit through the welding line 1 by means of the power source. The contact means 6 will typically be two electrically conductive clamps that are attached to each end of the welding wire and to each wire leading to each pole of the adjustable current source.

[025] I en utførelsesform kan sveiseledningen bakes inn i en sveiselist 11 av termoplast. Sveiselisten 11 har et tverrsnitt som er det samme i lengderetningen av listen og som er formet som én av: sirkel, T-form, H-form, rektangel eller trekant. For eksempel er en H-form anvendbar til å skjøte sammen plater med. [025] In one embodiment, the welding wire can be baked into a welding strip 11 of thermoplastic. The welding strip 11 has a cross-section which is the same in the longitudinal direction of the strip and which is shaped as one of: circle, T-shape, H-shape, rectangle or triangle. For example, an H-shape can be used to join boards together.

[026] I én utførelse er sveiseledningen i sveiselisten en flerhet parallelle tråder eller bånd fordelt over tverrsnittet av sveiselisten. I en annen utførelse er sveiseledningen to sveiseledninger 1, slik som vist i figur 10a, med elektrisk kontakt, f.eks. ved hjelp av et kontaktstykke 13 i den ene enden. Figuren viser også hvordan sveiselister kan koples sammen ved hjelp av han 12b og hun 12a kontakter. [026] In one embodiment, the welding line in the welding strip is a plurality of parallel wires or bands distributed over the cross-section of the welding strip. In another embodiment, the welding line is two welding lines 1, as shown in Figure 10a, with electrical contact, e.g. by means of a contact piece 13 at one end. The figure also shows how welding strips can be connected together using male 12b and female 12a contacts.

[027] Sveisesystemet anvendes ved hjelp av en fremgangsmåte for sveising av termoplast langs en sveisebane hvor fremgangsmåten omfatter følgende trinn: [027] The welding system is used using a method for welding thermoplastics along a welding path where the method includes the following steps:

a) Å feste sveiseledning 1 langs sveisebanen til minst én av termoplastdelene som skal sveises eller til en pressbjelke 7 som presses mot nevnte sveisebane. Det sistnevnte fungerer bare hvis minst én av termoplastdelene er tynne slik som en duk eller membran. b) Å påføre trykk langs sveisebanen ved hjelp av trykkpåføringsmidler. Størrelsen av trykket som påføres skal være i henhold til ‘Standarder for plastsveising’. a) Attaching welding wire 1 along the welding path to at least one of the thermoplastic parts to be welded or to a pressure beam 7 which is pressed against said welding path. The latter only works if at least one of the thermoplastic parts is thin such as a cloth or membrane. b) Applying pressure along the weld path using pressure application means. The amount of pressure applied must be in accordance with 'Standards for plastic welding'.

Trykkpåføringsmidlene kan være vekter, stropper 4a , terser 4b, klemmer og tvinger 4c. Hvis strukturene som skal sveises ikke er tilstrekkelig stive kan det være nødvendig med en eller flere pressbjelker som fordeler trykket langs sveisebanen. The pressure application means can be weights, straps 4a, tercers 4b, clamps and forceps 4c. If the structures to be welded are not sufficiently rigid, it may be necessary to use one or more pressure beams that distribute the pressure along the welding path.

c) Å feste sveiseledningen 1 til den justerbare strømkilden 5 ved hjelp av kontaktmidlene 6. c) Attaching the welding wire 1 to the adjustable current source 5 using the contact means 6.

d) Å sveise de to termoplastdelene 2, 3 sammen ved å strømsette sveiseledningen 1 med strømparametere som er i henhold til ‘Standarder for plastsveising’. (F.eks. EN 13067, DS INF. 70-1-7, NS:416-1-2:2008, EN 12201-2-3, ISO 12176-2, ISO 13950) d) To weld the two thermoplastic parts 2, 3 together by energizing the welding wire 1 with current parameters that are according to 'Standards for plastic welding'. (E.g. EN 13067, DS INF. 70-1-7, NS:416-1-2:2008, EN 12201-2-3, ISO 12176-2, ISO 13950)

Innholdsliste Table of contents

1 Sveiseledning 1 Welding wire

1a Fleksibelt sveisebånd 1a Flexible welding tape

1b Fleksibel sveisetråd 1b Flexible welding wire

2, 3 Termoplastdelene som skal sveises 2, 3 The thermoplastic parts to be welded

4 Trykkpåføringsmidler 4 Pressure application agents

4a Stropper 4a Straps

4b Ters 4b Ters

4c Tvinge 4c Force

5 Justerbar strømkilde 5 Adjustable power source

6 Kontaktmidler 6 Contact means

7 Pressbjelke 7 Press beam

7a Første pressbjelke 7a First press beam

7b Andre pressbjelke 7b Second pressure beam

8 Teflonlag 8 Teflon layers

9 Sveisetrådrenne 9 Welding wire chute

10 Skjøtedel 10 Joint part

11 Sveiselist 11 Welding strip

12a og b Han og hunkontakt 12a and b Male and female contact

13 Kontaktstykke 13 Contact piece

Claims (17)

PatentkravPatent claims 1. Sveisesystem for sveising av termoplast langs en sveisebane omfattende:1. Welding system for welding thermoplastics along a welding path comprising: en sveiseledning (1) omfattende minst ett fleksibelt sveisebånd (1a) eller minst én sveisetråd (1b), begge av metall som kan varmes opp ved elektrisk resistans,a welding line (1) comprising at least one flexible welding band (1a) or at least one welding wire (1b), both of metal that can be heated by electrical resistance, festemidler for å feste sveiseledningen (1) langs sveisebanen,fastening means to fasten the welding wire (1) along the welding path, trykkpåføringsmidler (4) for å trykke termoplastdelene som skal sveises sammen,pressure application means (4) for pressing the thermoplastic parts to be welded together, en justerbar strømkilde (5) for å varme opp sveiseledningen (1) til ønsket temperatur,an adjustable power source (5) to heat the welding wire (1) to the desired temperature, kontaktmidler (6) for å opprette en elektrisk krets gjennom sveiseledningen (1) ved hjelp av strømkilden,contact means (6) for creating an electric circuit through the welding wire (1) by means of the current source, hvor sveiseledning påføres ved minst én av de tre følgende lokasjoner:where welding wire is applied at at least one of the three following locations: langs sveisebanen mellom de to termoplastdelene (2, 3) som skal sveises, hvis minst én av termoplastdelene som skal sveises er tynne, på yttersiden langs sveisebanen av én av de tynne termoplastdelene som skal sveises, hvis minst én av termoplastdelene som skal sveises er tynne, på minst én pressbjelke (7) som trykkes inntil yttersiden langs sveisebanen av én av de tynne termoplastdelene (2, 3) som skal sveises ved hjelp av trykkpåføringsmidlene (4).along the welding path between the two thermoplastic parts (2, 3) to be welded, if at least one of the thermoplastic parts to be welded is thin, on the outside along the welding path of one of the thin thermoplastic parts to be welded, if at least one of the thermoplastic parts to be welded is thin , on at least one pressure beam (7) which is pressed against the outer side along the welding path of one of the thin thermoplastic parts (2, 3) to be welded using the pressure application means (4). 2. Sveisesystem ifølge krav 1 hvor festemidlene er et lim som festes på minst én side av metallsveisebåndet (1a) slik at metallsveisebåndet fremstår som en metalltape.2. Welding system according to claim 1 where the fastening means are an adhesive which is attached to at least one side of the metal welding band (1a) so that the metal welding band appears as a metal tape. 3. Sveisesystem ifølge krav 1 hvor festemidlene er sveistrådrenner 9 som freses eller skjæres ut i minst én av termoplastdelene som skal sveises, hvori sveistrådene kan klemmes ned.3. Welding system according to claim 1, where the fastening means are welding wire channels 9 which are milled or cut out in at least one of the thermoplastic parts to be welded, in which the welding wires can be clamped down. 4. Sveisesystem ifølge krav 1 hvor sveiseledningen (1) er av kobber.4. Welding system according to claim 1, where the welding line (1) is made of copper. 5. Sveisesystem ifølge krav 1 og 4 hvor sveisebåndet (1a) er 0,2 til 0,5 mm tykt. 5. Welding system according to claims 1 and 4 where the welding band (1a) is 0.2 to 0.5 mm thick. 6. Sveisesystem ifølge krav 1 og 4 hvor sveisebåndet (1a) er mellom 2 og 20 mm bredt.6. Welding system according to claims 1 and 4, where the welding band (1a) is between 2 and 20 mm wide. 7. Sveisesystem ifølge krav 1 og 4 hvor sveisetråden (1b) er 0,5 til 2 mm i diameter.7. Welding system according to claims 1 and 4 where the welding wire (1b) is 0.5 to 2 mm in diameter. 8. Sveisesystem ifølge krav 1 hvor trykkpåføringsmidlene (4) er minst én av: vekter, tvinger (4c), klemmer, stropper (4a) og terser (4b).8. Welding system according to claim 1, where the pressure application means (4) are at least one of: weights, forceps (4c), clamps, straps (4a) and tercers (4b). 9. Sveisesystem ifølge krav 1 hvor minst ett sveisebånd festes til en pressbjelke (7).9. Welding system according to claim 1 where at least one welding band is attached to a pressure beam (7). 10. Sveisesystem ifølge krav 10 hvor et teflonlag (8) er festet til yttersiden av sveisebåndet(ene) (1a).10. Welding system according to claim 10, where a Teflon layer (8) is attached to the outside of the welding tape(s) (1a). 11. Sveisesystem ifølge krav 1 hvor kontaktmidlene (6) er to elektrisk ledende klemmer som festes til hver sin ende av sveiseledningen og til hver sin ledning som fører til hver sin pol på den justerbare strømkilden.11. Welding system according to claim 1 where the contact means (6) are two electrically conductive clamps which are attached to each end of the welding wire and to each wire leading to each pole of the adjustable current source. 12. Sveisesystem ifølge krav 1 hvor det tilveiebringes en første og andre pressbjelke (7a, 7b) for anvendelse sammen med trykkpåføringsmidler (4) av typen terser (4b), klemmer eller tvinger (4c) ved skjøting av duker.12. Welding system according to claim 1 where a first and second pressure beam (7a, 7b) is provided for use together with pressure application means (4) of the type of cutters (4b), clamps or forceps (4c) when joining cloths. 13. Sveisesystem ifølge krav 1 hvor sveiseledningen (1) bakes inn i en sveiselist (11) av termoplast.13. Welding system according to claim 1, where the welding wire (1) is baked into a welding strip (11) of thermoplastic. 14. Sveisesystem ifølge krav 13 hvor sveiselisten har et tverrsnitt formet som én av: sirkel, T-form, H-form, rektangel og trekant.14. Welding system according to claim 13, where the welding strip has a cross-section shaped like one of: circle, T-shape, H-shape, rectangle and triangle. 15. Sveisesystem ifølge krav 13 hvor sveiseledningen er en flerhet parallelle tråder eller bånd fordelt over tverrsnittet av sveiselisten.15. Welding system according to claim 13, where the welding line is a plurality of parallel wires or bands distributed over the cross-section of the welding strip. 16. Sveisesystem ifølge krav 13 hvor sveiseledningen er to sveiseledninger med elektrisk kontakt i den ene enden ved hjelp av et kontaktstykke (13).16. Welding system according to claim 13, where the welding line is two welding lines with electrical contact at one end by means of a contact piece (13). 17. Fremgangsmåte for sveising av termoplast langs en sveisebane med sveisesystemet ifølge krav 1, hvor fremgangsmåten omfatter følgende trinn:17. Method for welding thermoplastics along a welding path with the welding system according to claim 1, where the method comprises the following steps: a) å feste minst én sveiseledning (1) langs sveisebanen til minst én av termoplastdelene som skal sveises, eller, hvis minst én av termoplastdelene er tynne, til en pressbjelke som presses mot nevnte tynne termoplastdel langs sveisebanen, b) å påføre trykk langs sveisebanen ved hjelp av trykkpåføringsmidler, a) to attach at least one welding wire (1) along the welding path to at least one of the thermoplastic parts to be welded, or, if at least one of the thermoplastic parts is thin, to a pressure beam that is pressed against said thin thermoplastic part along the welding path, b) to apply pressure along the welding path by means of pressure application means, c) å feste sveiseledningen 1 til den justerbare strømkilden 5 ved hjelp av kontaktmidlene 6, ogc) attaching the welding wire 1 to the adjustable current source 5 by means of the contact means 6, and d) å sveise de to termoplastdelene 2, 3 sammen ved å strømsette sveiseledningen 1. d) to weld the two thermoplastic parts 2, 3 together by energizing the welding wire 1.
NO20200117A 2020-01-31 2020-01-31 NO20200117A1 (en)

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GB1121850A (en) * 1964-11-14 1968-07-31 Furukawa Electric Co Ltd A jointing method of pipe shaped plastics and the jointing materials
US5407514A (en) * 1988-02-03 1995-04-18 E. O. Butts Consultants Ltd. Method for welding thermoplastic materials
EP0498602A3 (en) * 1991-02-06 1992-10-07 Nippon Zeon Co., Ltd. Composite molding and production process and use thereof
CH690990A5 (en) * 1996-02-22 2001-03-30 Fischer Georg Rohrleitung Method, heating mat and sleeve for connecting plastic pipes.
US6131954A (en) * 1996-05-28 2000-10-17 Campbell; Steve Weldable couple for electrofusion coupling of profile wall thermoplastic pipes without a separate coupler
CN105307839B (en) * 2013-05-08 2017-06-23 Tsc创新有限公司 The method and apparatus installed for pipe-line system and repaired
ES2896265T3 (en) * 2018-05-29 2022-02-24 Fischer G Rohrleitungssysteme Ag electric welding tape

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