NO137077B - PROCEDURE FOR CARRYING OUT A THERMOPLASTIC PIPE BRANCH ON A PIPE AND DEVICE FOR CARRYING OUT PROCEDURE - Google Patents
PROCEDURE FOR CARRYING OUT A THERMOPLASTIC PIPE BRANCH ON A PIPE AND DEVICE FOR CARRYING OUT PROCEDURE Download PDFInfo
- Publication number
- NO137077B NO137077B NO1232/70A NO123270A NO137077B NO 137077 B NO137077 B NO 137077B NO 1232/70 A NO1232/70 A NO 1232/70A NO 123270 A NO123270 A NO 123270A NO 137077 B NO137077 B NO 137077B
- Authority
- NO
- Norway
- Prior art keywords
- pipe
- branch
- pipe part
- zone
- bead
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 16
- 229920001169 thermoplastic Polymers 0.000 title claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 title claims description 4
- 238000003466 welding Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 15
- 239000011324 bead Substances 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000004049 embossing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 14
- 210000003128 head Anatomy 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001331 nose Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
- B29D23/003—Pipe joints, e.g. straight joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
- B29C65/2053—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position
- B29C65/2061—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding
- B29C65/2069—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined
- B29C65/2076—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined perpendicularly to the plane comprising the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
- B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/63—Internally supporting the article during joining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/822—Transmission mechanisms
- B29C66/8227—Transmission mechanisms using springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring 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
- B29C66/9141—Measuring 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
- B29C66/91411—Measuring 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring 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
- B29C66/9141—Measuring 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
- B29C66/91421—Measuring 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 joining tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring 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
- B29C66/9141—Measuring 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
- B29C66/91441—Measuring 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 the temperature being non-constant over time
- B29C66/91443—Measuring 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 the temperature being non-constant over time following a temperature-time profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring 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
- B29C66/9192—Measuring 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 in explicit relation to another variable, e.g. temperature diagrams
- B29C66/91921—Measuring 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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring 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
- B29C66/9192—Measuring 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 in explicit relation to another variable, e.g. temperature diagrams
- B29C66/91951—Measuring 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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to time, e.g. temperature-time diagrams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
- B29C66/9292—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams
- B29C66/92921—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams in specific relation to time, e.g. pressure-time diagrams
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
- F16L47/28—Joining pipes to walls or to other pipes, the axis of the joined pipe being perpendicular to the wall or to the axis of the other pipe
- F16L47/30—Joining pipes to walls or to other pipes, the axis of the joined pipe being perpendicular to the wall or to the axis of the other pipe using attaching means embracing the pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0045—Perforating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Denne oppfinnelse vedrører en fremgangsmåte ved utførel-se av en røravgrening av termoplast på en rørdel av samme eller et lignende materiale, hvor der på det sted på denne rørdel, hvor avgreningen skal kobles til, ved hjelp av et opphetet stempel med rørformet tverrsnitt og en diameter tilpasset avgreningens diameter og med en pregekant tilpasset avgreningens vinkel til rørde-lens lengdeakse, mykes opp en sone, på hvilken avgreningen, hvis forkant er tilpasset rørdelens diameter og vinkel og også varmet opp, anbringes, hvoretter der gjennom avgreningen og inn i rør-delens vegg skjæres en åpning som passer til tilkoblingsstedets form, idet avgreningen, etter å være anbragt på den oppmykede sone, først trykkes i lengderetningen mot den oppmykede sone som understøttes av en støttedel, således at der dannes en vulst som omgir tilkoblingsstedet. This invention relates to a method for performing a pipe branch of thermoplastic on a pipe part of the same or a similar material, where at the place on this pipe part, where the branch is to be connected, by means of a heated piston with a tubular cross-section and a diameter adapted to the diameter of the branch and with an embossing edge adapted to the angle of the branch to the longitudinal axis of the pipe part, a zone is softened, on which the branch, whose leading edge is adapted to the diameter and angle of the pipe part and also heated, is placed, after which through the branch and into the pipe part's wall, an opening is cut that fits the shape of the connection point, as the branch, after being placed on the softened zone, is first pressed in the longitudinal direction against the softened zone which is supported by a support part, so that a bead is formed that surrounds the connection point.
Hittil har det vært ansett mest hensiktsmessig å forme den ved påsveising dannede sveisevulst ved håndverksmessig bear-beidelse for dannelse av en jevnest mulig overgang mellom rørav-snittet og det avgrenende rørstykke og bare velge tilpresnings-trykket så høyt at ikke alt plastifisert materiale presses ut av sveisesonen. Until now, it has been considered most appropriate to shape the weld bead formed by welding on by manual processing to create the smoothest possible transition between the pipe section and the branching pipe piece and only choose the pressing pressure so high that not all plasticized material is pressed out of the welding zone.
Hensikten med oppfinnelsen er å forbedre den innled-ningsvis omtalte fremgangsmåte og derved oppnå en vesentlig bed- The purpose of the invention is to improve the initially mentioned method and thereby achieve a significant improvement
re røravgrening, bl.a. med større sveiseflate. En annen hensikt med oppfinnelsen er å tillate bruken av høyere trykk. Det særegne ved fremgangsmåten ifølge oppfinnelsen er at trykket på rør-avgreningen deretter avlastes og et stempel trykkes mot vulsten akseparallelt til avgreningen, således at der finner sted en radial forskyvning av plasten som danner vulsten samt en aksial forskyvning av materialet i rørdelen og således at begrensningslinjen for de to dele- som skal sveises sammen, sett i aksialsnitt, deformeres leppeformet og sveiseflaten derved økes i ve- re pipe branching, i.a. with a larger welding surface. Another object of the invention is to allow the use of higher pressures. The peculiarity of the method according to the invention is that the pressure on the pipe branch is then relieved and a piston is pressed against the bead axially parallel to the branch, so that there is a radial displacement of the plastic that forms the bead as well as an axial displacement of the material in the pipe part and so that the limit line for the two parts to be welded together, seen in axial section, is deformed into a lip shape and the welding surface is thereby increased in
sentlig grad. Ved fremgangsmåten er det mulig og hensiktsmessig å anvende trykk av størrelsesordenen 10 - 100 kp/cm 2 tilpasset typen av det benyttede materiale, for at kontaktflaten mellom de to deler som skal forbindes med hinannen skal få den mest egnede form. Dette er mulig uten at de ved anvendelsen av høye trykk kjente ulemper opptrer, fordi det plastifiserte materiale kan forflyttes i den ved pressestemplet bestemte retning. Ved tid-igere kjente fremgangsmåter dannes der ved høyere trykk en svek-kelse som skyldes utpressing av plastisk materiale fra sveisesonen. Denne ulempe unngås helt ved fremgangsmåten ifølge oppfinnelsen. late degree. With the method, it is possible and appropriate to use pressure of the order of magnitude 10 - 100 kp/cm 2 adapted to the type of material used, so that the contact surface between the two parts to be connected to each other will have the most suitable shape. This is possible without the disadvantages known from the use of high pressure occurring, because the plasticized material can be moved in the direction determined by the press piston. In previously known methods, a weakening is formed at higher pressures due to extrusion of plastic material from the welding zone. This disadvantage is completely avoided by the method according to the invention.
Oppfinnelsen angår også en anordning for utførelse av denne fremgangsmåte, hvilken anordning omfatter et opphetbart stempel for oppmykning av en ringformet sone på en rørdel, et trykkhode for påpressing av en røravgrening på den oppmykede sone, en støttedel som kan skyves inn i rørdelen for understøt-telse av denne, og en skjærefres til å forme en åpning på rør-delens tilkoblingssted, og det særegne ved denne anordning er at trykkhodet har to innbyrdes konsentriske og innbyrdes ikke-dreibare hylser som sammen begrenser et ringformet mellomrom for opptagning av røravgreningen, og hvis ender er således utformet at hodet kan anbringes på rørdelen i vinkelen for den røravgrening som skal fremstilles, og hvor den ytre hylse (11) har en innad avrundet endeflate som bevirker at plasten som danner vulsten som omgir sveisestedet, trykkes inn i røravgreningens område. Øvrige trekk ved anordningen fremgår av underkravene. The invention also relates to a device for carrying out this method, which device comprises a heatable piston for softening an annular zone on a pipe part, a pressure head for pressing a pipe branch onto the softened zone, a support part that can be pushed into the pipe part for support counting of this, and a cutting mill to form an opening at the connection point of the pipe part, and the peculiarity of this device is that the pressure head has two mutually concentric and mutually non-rotating sleeves which together limit an annular space for receiving the pipe branch, and if ends are designed in such a way that the head can be placed on the pipe part at the angle for the pipe branch to be produced, and where the outer sleeve (11) has an inwardly rounded end surface which causes the plastic that forms the bead that surrounds the welding point to be pressed into the area of the pipe branch. Other features of the device appear in the sub-requirements.
Oppfinnelsen skal forklares nærmere ved et eksempel under henvisning til tegningene, hvis fig. 1 viser en tilskåret eller frest røravgrening, fig. 2 viser skjematisk oppvarming av røravgreningen, fig. 3 viser et snitt av den oppvarmede rørav-grening, fig. 4 viser oppvarming av en rørdels ringformede sone, fig. 5 viser rørdelens ringformede, op<p>varmede sone sett ovenfra, og fig. 6 viser røravgreningen påsatt rørdelens oppvarmede sone; fig. 7 viser i aksialsnitt virkningen.av trykket på sveisesonen, hvor der benyttes et presseverktøy ifølge oppfinnelsen, fig. 8 viser den innsirklede med VIII betegnede del av fig. 7, fig. 9 viser utskjæring av en åpning i rørdelen etter sammensveising ved avgreningen, og fig. 10 viser den ferdige rørforbindelse; fig. 11 viser et temperaturtrykk- og tidsdiagram, fig. 12 viser i tverrsnitt et modifisert presseverktøy, fig. 13 viser en annen utførelse av presseverktøyet, fig. 14 og 15 viser snitt etter linjen XIV - XIV hhv. XV - XV på fig. 13, og fig. 16 - 20 viser fremgangsmåtetrinn under anvendelse av presseverktøyet ifølge fig. 13. The invention shall be explained in more detail by an example with reference to the drawings, if fig. 1 shows a cut or milled pipe branch, fig. 2 shows schematic heating of the pipe branch, fig. 3 shows a section of the heated pipe branch, fig. 4 shows the heating of the annular zone of a pipe part, fig. 5 shows the tubular part's annular, heated zone seen from above, and fig. 6 shows the pipe branch attached to the heated zone of the pipe part; fig. 7 shows in axial section the effect of the pressure on the welding zone, where a pressing tool according to the invention is used, fig. 8 shows the circled part designated VIII of fig. 7, fig. 9 shows a cutout of an opening in the pipe part after welding together at the branch, and fig. 10 shows the finished pipe connection; fig. 11 shows a temperature pressure and time diagram, fig. 12 shows a modified press tool in cross-section, fig. 13 shows another embodiment of the press tool, fig. 14 and 15 show sections along the line XIV - XIV respectively. XV - XV in fig. 13, and fig. 16 - 20 show method steps using the press tool according to fig. 13.
På tegningene er et rørstykke som skal danne en rørav-grening og som er av termoplast, såsom polyethylen, betegnet med 1 og er ved sin ende 2 formet således at det passer til overfla-ten av en rørdel 3 av samme materiale. Først anbringes rørstyk-ket 1 med sin ende 2 på en varmesylinder 4 som har samme diameter som rørdelen 3 og som er oppvarmet for polyethylen til 200° C. Rørstykkets 1 ende 2 presses mot sylinderen, hvorved det blir varmt og enden noe deformert, således at der dannes en kantvulst 5. På samme tid som rørstykket varmes, oppvarmes også rørdelen 3, til hvilket formål den, som vist på fig. 4, anbringes på en bærer 6 og. stives av med en innlagt sylinder 7, f.eks. av aluminium, for å hindre at den klapper sammen under de følgende pro-sesstrinn. Mot rørdelen 3 presses et varmeelement 8, hvis nedre ende 9 i form svarer til den tilskårne eller tilfreste ende 2 av rørstykket 1 og som også er oppvarmet til 200° C. Derved dannes en ringformet, myk sveisesone 10 som antydet på fig. 5. In the drawings, a piece of pipe which is to form a pipe branch and which is made of thermoplastic, such as polyethylene, is denoted by 1 and is shaped at its end 2 so that it fits the surface of a pipe part 3 of the same material. First, the pipe section 1 is placed with its end 2 on a heating cylinder 4 which has the same diameter as the pipe section 3 and which is heated for polyethylene to 200° C. The end 2 of the pipe section 1 is pressed against the cylinder, whereby it becomes hot and the end is somewhat deformed, thus that an edge bead 5 is formed. At the same time as the pipe section is heated, the pipe part 3 is also heated, for which purpose it, as shown in fig. 4, is placed on a carrier 6 and. stiffened with an inserted cylinder 7, e.g. of aluminium, to prevent it from collapsing during the following process steps. A heating element 8 is pressed against the pipe part 3, whose lower end 9 corresponds in shape to the cut or milled end 2 of the pipe piece 1 and which is also heated to 200° C. An annular, soft welding zone 10 is thereby formed as indicated in fig. 5.
Deretter anbringes rørstykkets 1 oppmykede ende 2 på rørdelens 3 oppvarmede sone og trykkes fast for å forbinde de oppvarmede flater, idet et trykkhode P som tjener som presseverk-tøy anbringes på eller over det forbundne rørstykke 1 som vist på fig. 7. Trykkhodet er således utformet at det fullstendig omgir sveisesonen og har en ytre hylse 11, f.eks. av aluminium, og en indre hylse 12 av stål. Det ringformede rom 13 mellom de to hylser er således dimensjonert at rørstykket 1 kan beveges aksialt med klaring i mellomrommet; rørstykket er lengere enn dette mellomrom. Trykkhodets P øvre del har mindre diameter og er utført således at den kan anbringes og festes til en pressestang av i og for seg kjent type. Den indre hylse 12 av stål er forbun-det med den ytre hylse 11 ved hjelp av en skrue 14 og en stift 15, således at hylsene ikke kan dreies innbyrdes. Et heleele-ment 16 er anbragt rundt den ytre hylse 11 for i nødstilfelle å kunne forvarme presseverktøyet til en temperatur på f.eks. 50° C. Next, the softened end 2 of the pipe section 1 is placed on the heated zone of the pipe section 3 and pressed firmly to connect the heated surfaces, a pressure head P which serves as a pressing tool being placed on or over the connected pipe section 1 as shown in fig. 7. The pressure head is designed in such a way that it completely surrounds the welding zone and has an outer sleeve 11, e.g. of aluminium, and an inner sleeve 12 of steel. The annular space 13 between the two sleeves is so dimensioned that the pipe piece 1 can be moved axially with clearance in the space; the piece of pipe is longer than this gap. The upper part of the pressure head P has a smaller diameter and is designed so that it can be placed and attached to a press rod of a known type per se. The inner sleeve 12 of steel is connected to the outer sleeve 11 by means of a screw 14 and a pin 15, so that the sleeves cannot be rotated in relation to each other. An integral element 16 is placed around the outer sleeve 11 in order to be able to preheat the press tool to a temperature of e.g. 50°C.
Hylsenes 11 og 12 frie ender er således formet at de passer til rørdelens 3 krumning. Den ytre hylse 11 har en innad avrundet endeflate 17, mens den indre hylses 12 endeflate har en fremstående kant 18 som tjener til å forme en rille 19 som dannes under presseoperasjonen. The free ends of the sleeves 11 and 12 are shaped in such a way that they fit the curvature of the tube part 3. The outer sleeve 11 has an inwardly rounded end surface 17, while the end surface of the inner sleeve 12 has a protruding edge 18 which serves to form a groove 19 which is formed during the pressing operation.
Ved hjelp av dette pressehode som altså belastes aksialt i pilens F retning, utøves der et trykk på f.eks. 5 0 kp/cm 2 som bevirker en radial forskyvning av den plast som danner vulsten og dermed også bevirker en aksial forskyvning av. materialet i rørstykket, således at begrensningslinjen 51 for de to deler som skal sveises sammen til en leppe, deformeres, sett i aksialsnitt, med den følge at sveiseflaten øker vesentlig. Dette fremgår av fig. 8. With the help of this press head, which is thus loaded axially in the direction of the arrow F, a pressure of e.g. 5 0 kp/cm 2 which causes a radial displacement of the plastic that forms the bead and thus also causes an axial displacement of. the material in the pipe piece, so that the limit line 51 for the two parts to be welded together to form a lip is deformed, seen in axial section, with the consequence that the welding surface increases significantly. This is evident from fig. 8.
Trykket opprettholdes i omtrent 5 - 10 sek, som det fremgår av fig. 11 som også viser temperaturforløpet, hvoretter presseverktøyet fjernes, underlagssylinderen 7 tas ut og en fres The pressure is maintained for approximately 5 - 10 seconds, as can be seen from fig. 11 which also shows the temperature course, after which the pressing tool is removed, the base cylinder 7 is taken out and a milling
20 føres inn i rørstykket 1 for å skjære gjennom bunnen av rillen - 19-, dvs. skjære ut en bunndel 21,- således at den ferdige rørfor-bindelse får det utseende som vist på fig. 10. 20 is introduced into the pipe piece 1 to cut through the bottom of the groove - 19-, i.e. cut out a bottom part 21, - so that the finished pipe connection takes on the appearance shown in fig. 10.
Fig. 12 viser en annen utførelse av trykkhodet som kan brukes for røravgreninger som skal danne en vinkel med rørdelen som er forskjellig fra 90°. Dette verktøy har en basisdel 22 med en ytre aluminiumhylse 23 som går ut fra basis og er omgitt av et varmeelement 24. Den indre hylse 25 av stål er på lignende måte som ifølge fig. 7 skrudd sammen med den ytre hylse (ikke vist på fig. 12). Endene 17' og 18' svarer til de tidligere omtalte Fig. 12 shows another embodiment of the pressure head which can be used for pipe branches which are to form an angle with the pipe part which is different from 90°. This tool has a base part 22 with an outer aluminum sleeve 23 which extends from the base and is surrounded by a heating element 24. The inner sleeve 25 of steel is in a similar way as according to fig. 7 screwed together with the outer sleeve (not shown in fig. 12). The ends 17' and 18' correspond to those previously mentioned
ender 17 hhv.'18. Mellomrommet 26 mellom hylsene er således dimensjonert at et rørstykke lett kan føres inn, og lengden av mellomrommet er her større enn lengden av rørstykket som benyttes. ends 17 or '18. The space 26 between the sleeves is dimensioned in such a way that a piece of pipe can easily be inserted, and the length of the space is here greater than the length of the piece of pipe that is used.
Fig. 13 - 15 viser en ytterligere utførelse av trykkhodet som også kan brukes til å presse et rørstykke 3 inn på varmeelementet og den oppmykede sone av rørdelen. Hodet har en ytre hylse 27 av aluminium og en indre hylse 28 av stål, sist-nevnte med en lukkedel 2 9 med en sentral boring. Lukkedelen er utstyrt med en flens 30, således at en forbindelsesring 31 og den ytre hylse 27 ved hjelp av skruer 32 kan forbindes med den indre hylse. Forbindelsesringen 31 er festet til den nedre ende av et pressestempel 33 ved en bajonettkobling. Også stemplet 33 har en boring for gjennomføring av en pressestang eller støter 34. Den indre hylse 28 er forsynt med to slisser 35, inn i hvilke der rager øvre, ytre ender av sperredeler 36 som kan svinge om tverrstifter 37 og som også har nedadrettede ender 36' og oventil holdeneser 36". En begerformet del 38 er skrudd nedenfra inn Fig. 13 - 15 show a further embodiment of the pressure head which can also be used to press a piece of pipe 3 onto the heating element and the softened zone of the pipe part. The head has an outer sleeve 27 of aluminum and an inner sleeve 28 of steel, the latter with a closing part 29 with a central bore. The closing part is equipped with a flange 30, so that a connecting ring 31 and the outer sleeve 27 can be connected to the inner sleeve by means of screws 32. The connecting ring 31 is attached to the lower end of a press piston 33 by a bayonet connection. The piston 33 also has a bore for the passage of a press rod or pusher 34. The inner sleeve 28 is provided with two slots 35, into which protrude the upper, outer ends of locking parts 36 which can swing about cross pins 37 and which also have downwardly directed ends 36' and above holding nose 36". A cup-shaped part 38 is screwed in from below
i den indre hylse og inneholder en fjær 39, hvis ene ende hviler mot begerets bunn og hvis annen ende hviler mot en flat støte 40 som av fjæren trykkes mot sperredelenes 36 underside for å trykke de øvre ender 36" utad. Ved virkningen av trykket fra støteren 34 trykkes støtstangen 41 i pilens retning nedad og svinger derved sperredelene 36 mot fjærens 39 kraft, således at holdenese-ne 36" trekkes inn. in the inner sleeve and contains a spring 39, one end of which rests against the bottom of the cup and the other end of which rests against a flat bump 40 which is pressed by the spring against the underside of the locking parts 36 to press the upper ends 36" outwards. By the effect of the pressure from the pusher 34, the push rod 41 is pressed in the direction of the arrow downwards and thereby swings the locking parts 36 against the force of the spring 39, so that the holding noses 36" are pulled in.
Dette verktøy benyttes til utførelse av fremgangsmåten ifølge oppfinnelsen, hvilket skal forklares nedenfor i forbindelse med fig. 16 til 20. This tool is used to carry out the method according to the invention, which will be explained below in connection with fig. 16 to 20.
Fjæren 39 bevirker at i støteren 41 utgangsstillingen befinner seg i den øvre endestilling, i vhilken røravsnittet 1' fører til anslaget 36" og mothakene 36" presses lett inn, således at røravsnittet ikke kan falle ut nedad. Det således holdte rørstykke 1' trykkes mot et sylindrisk varmeelement 4' som har samme form som rørdelen 3'. Ved 200° C varmes rørstykkets 1' ende som rager over de to hylsers ender opp til sveisetemperaturen, hvoretter det bres ut til sidene som vist ved 2' på fig. 16. Samtidig forsynes rørdelen 3' som på innersiden er forsynt med et støtterør 7', med en ringformet sveisesone 10' som er varmet opp til sveisetemperaturen ved hjelp av et varmeelement som er varmet opp til 200° C og som er utformet i samsvar med rørstykkets endeflate 1 og som presses mot røravsnittet 3'. Deretter trykkes rørstykkets 1' oppvarmede endeparti 2' mot rørde-lens 3' oppvarmede sone. The spring 39 causes the starting position in the pusher 41 to be in the upper end position, in which the pipe section 1' leads to the stop 36" and the barbs 36" are easily pressed in, so that the pipe section cannot fall out downwards. The thus held pipe section 1' is pressed against a cylindrical heating element 4' which has the same shape as the pipe section 3'. At 200° C, the end of the pipe piece 1' which projects over the ends of the two sleeves is heated up to the welding temperature, after which it is blown out to the sides as shown at 2' in fig. 16. At the same time, the pipe part 3', which is provided on the inside with a support pipe 7', is supplied with an annular welding zone 10' which is heated to the welding temperature by means of a heating element which is heated to 200° C and which is designed in accordance with the end surface 1 of the pipe piece and which is pressed against the pipe section 3'. The heated end portion 2' of the pipe section 1' is then pressed against the heated zone of the pipe section 3'.
Som vist på fig. 18 utøves et trykk F i aksial retning mot rørstykket 1', hvorved der oppnås en rett sveiselinje 50. Deretter skyves støteren 3 4 frem for å svinge sperredelene 36 As shown in fig. 18, a pressure F is exerted in the axial direction against the pipe piece 1', whereby a straight welding line 50 is obtained. Then the pusher 3 4 is pushed forward to swing the locking parts 36
og derved frigi rørstykket 1'. Pressens ende 33 beveger seg i retning mot den understøttede rørdel 3', således at både den ytre og den indre hylse 27 hhv. 28 beveger seg mot hovedrør- and thereby release the pipe piece 1'. The end 33 of the press moves in the direction of the supported pipe part 3', so that both the outer and the inner sleeve 27 respectively. 28 moves towards the main pipe-
delen 3' (fig. 19). Disse hylser utøver et trykk på omtrent 50 part 3' (fig. 19). These sleeves exert a pressure of approximately 50
2 ... 2 ...
kp/cm mot det materiale som danner de to vulster, således at materialet fra rørdelens 3' oppvarmede sone forskyves mot rørstyk-ket 1', som vist på fig. 20, med den- følge at den i tverrsnitt opprinnelig rettlinjede sveisesøm 50 deformeres i -retning oppad og antar omrisset av en leppe eller én rygg 51 med den følge at kontaktflaten blir større og sveisestedets styrke øker. kp/cm against the material which forms the two beads, so that the material from the heated zone of the pipe part 3' is displaced towards the pipe part 1', as shown in fig. 20, with the result that the initially rectilinear weld seam 50 in cross-section is deformed in the -direction upwards and assumes the outline of a lip or one ridge 51 with the result that the contact surface becomes larger and the strength of the weld increases.
Under denne<1>presseoperasjon blir rørstykket 1 ikke fast-holdt ved hjelp av sperrene 36, således at det kan forskyves oppad når det oppmykede materiale ved enden flyter oppad. Også ved denne utførelsesmåte rager innerhylsens 28 ytterkant sa langt frem at den kan trenge inn i rørdelens materiale for å danne en skillerille. During this<1>pressing operation, the pipe piece 1 is not held by means of the latches 36, so that it can be displaced upwards when the softened material at the end flows upwards. Also in this embodiment, the outer edge of the inner sleeve 28 protrudes so far forward that it can penetrate the material of the pipe part to form a separating groove.
Etter at presseverktøyet er fjernet fra de sammensvei-sede rørdeler, er rørforbindelsen helt ferdig, som vist på fig. 10. After the pressing tool has been removed from the welded pipe parts, the pipe connection is completely finished, as shown in fig. 10.
Som forklart bringes de to deler som skal sveises sammen, først på den i forbindelse med fig. 16 og 17 omtalte måte opp på myknings- eller sveisetemperatur og ikke noen. lavere temperatur, fordi ingen ytterligere oppvarming for oppnåelse av disse temperaturer finner sted under presseoperasjonen. As explained, the two parts to be welded are brought together, first on the one in connection with fig. 16 and 17 mentioned way up on softening or welding temperature and not any. lower temperature, because no further heating to achieve these temperatures takes place during the pressing operation.
Det sylindriske varmeelement for rørstykkets 1 ende kan varmes.opp elektrisk eller ved hjelp av gass eller annet brenn-- stoff.. Det samme gjelder oppvarming ved hjelp av varmeelementet av sonen på rørdelen. Dog kan de enkelte varmeelementer velges således at de tilfredsstiller arbeidsbetingelsene. De må kunne tilveiebringe de temperaturer som er nødvendig for sammensveising av delene. The cylindrical heating element for the 1 end of the pipe can be heated electrically or with the help of gas or other fuel. The same applies to heating using the heating element of the zone on the pipe part. However, the individual heating elements can be selected so that they satisfy the working conditions. They must be able to provide the temperatures necessary for welding the parts together.
Denne frémgangsmåte egner seg for alle sveisbare plas-ter. De i enkelte tilfelle benyttede temperaturer, tilpresnings-trykk og virketiden er avhengig av materialet og dettes vegg.tyk-kelse. Således har <p>olyethylen med molekylvekt 300 000 og tett-het 0,955 p/cm3 en sveisetemperatur på ca. 200° C. Når den benyttede rørdel har en ytterdiameter på 110 mm og en veggtykkelse på 3,5 mm, mens rørstykket som skal føres inn har en ytterdiameter på 63 mm og en veggtykkelse på 3 mm, må der for oppvarming til sveisetemperatur i løpet av ca. 90 sek utøves et trykk som avtar fra 0,5 kp/cm 2ned til 0. For dannelse av den ringformede sveisesone på rørdelen kreves et trykk på 29 kp/cm 2 i løpet av 25 sek og deretter ytterligere 35 sek uten trykk. Det trykk som må utøves mot vulsten når rørstykket presses mot rørdelen, ut- This procedure is suitable for all weldable plastics. The temperatures, pressing pressure and working time used in individual cases depend on the material and its wall thickness. Thus, polyethylene with a molecular weight of 300,000 and a density of 0.955 p/cm3 has a welding temperature of approx. 200° C. When the pipe part used has an outer diameter of 110 mm and a wall thickness of 3.5 mm, while the pipe piece to be inserted has an outer diameter of 63 mm and a wall thickness of 3 mm, for heating to welding temperature during of approx. For 90 sec, a pressure is applied which decreases from 0.5 kp/cm 2 down to 0. To form the annular welding zone on the pipe part, a pressure of 29 kp/cm 2 is required during 25 sec and then a further 35 sec without pressure. The pressure that must be exerted against the bead when the pipe piece is pressed against the pipe part, out-
gjør ca. 81 kp/cm 2 og må opprettholdes i 10 - 15 sek. make approx. 81 kp/cm 2 and must be maintained for 10 - 15 sec.
Claims (5)
Applications Claiming Priority (1)
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US86883369A | 1969-10-23 | 1969-10-23 |
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AT (1) | AT304206B (en) |
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US6022441A (en) * | 1996-12-27 | 2000-02-08 | Kawasumi Laboratories, Inc. | Medical device having a branch and process for producing the same |
JP2015112794A (en) * | 2013-12-11 | 2015-06-22 | 積水化学工業株式会社 | Production method of resin pipe |
US10343336B2 (en) * | 2016-02-10 | 2019-07-09 | Mcelroy Manufacturing, Inc. | Tool for fusing outlet fittings in a plastic pipe and method of using the tool |
CN114193757B (en) * | 2021-12-10 | 2023-07-07 | 华创天元实业发展有限责任公司 | Step-by-step steel skeleton plastic composite pipe inclined tee joint processing equipment and method |
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1970
- 1970-03-31 AT AT294370A patent/AT304206B/en not_active IP Right Cessation
- 1970-04-02 NO NO123270A patent/NO137077C/en unknown
- 1970-04-03 SE SE463470A patent/SE352276B/xx unknown
- 1970-04-03 NL NL7004861A patent/NL7004861A/xx unknown
- 1970-04-06 FI FI94470A patent/FI56137C/en active
- 1970-04-16 GB GB1265915D patent/GB1265915A/en not_active Expired
- 1970-04-20 IE IE506/70A patent/IE34107B1/en unknown
- 1970-04-27 FR FR7015201A patent/FR2046535A5/fr not_active Expired
- 1970-05-19 DE DE7018601U patent/DE7018601U/en not_active Expired
- 1970-05-28 JP JP4526470A patent/JPS5432825B1/ja active Pending
- 1970-06-01 CH CH814670A patent/CH526381A/en not_active IP Right Cessation
- 1970-07-10 BE BE753291D patent/BE753291A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL7004861A (en) | 1971-04-27 |
SE352276B (en) | 1972-12-27 |
FR2046535A5 (en) | 1971-03-05 |
AT304206B (en) | 1972-12-27 |
IE34107B1 (en) | 1975-02-05 |
NO137077C (en) | 1977-12-28 |
FI56137B (en) | 1979-08-31 |
GB1265915A (en) | 1972-03-08 |
JPS5432825B1 (en) | 1979-10-17 |
DE2024323B2 (en) | 1972-07-13 |
FI56137C (en) | 1979-12-10 |
IE34107L (en) | 1971-04-23 |
DE2024323A1 (en) | 1971-05-13 |
BE753291A (en) | 1970-12-16 |
DE7018601U (en) | 1970-08-06 |
CH526381A (en) | 1972-08-15 |
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