ITTO930900A1 - Elemento di raccordo tubolare. - Google Patents

Elemento di raccordo tubolare. Download PDF

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Publication number
ITTO930900A1
ITTO930900A1 IT000900A ITTO930900A ITTO930900A1 IT TO930900 A1 ITTO930900 A1 IT TO930900A1 IT 000900 A IT000900 A IT 000900A IT TO930900 A ITTO930900 A IT TO930900A IT TO930900 A1 ITTO930900 A1 IT TO930900A1
Authority
IT
Italy
Prior art keywords
connecting element
plastic material
element according
parts
fitting
Prior art date
Application number
IT000900A
Other languages
English (en)
Inventor
Janos Kertesz
Original Assignee
Rasmussen Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rasmussen Gmbh filed Critical Rasmussen Gmbh
Publication of ITTO930900A0 publication Critical patent/ITTO930900A0/it
Publication of ITTO930900A1 publication Critical patent/ITTO930900A1/it
Application granted granted Critical
Publication of IT1261342B publication Critical patent/IT1261342B/it

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14598—Coating tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/005—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels the end of an internal lining
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining 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
    • B29C65/5057—Joining 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 positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • B29C70/76—Moulding on edges or extremities of the preformed part
    • B29C70/766—Moulding on edges or extremities of the preformed part on the end part of a tubular article
    • 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
    • F16L47/02—Welded joints; Adhesive 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B29C2045/14319—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles bonding by a fusion bond
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin welding
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining 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
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/5223—Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/02—Glass fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/07—Resins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/11—Shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)

Description

DESCRIZIONE dell'invenzione industriale dal titolo: ?Elemento di raccordo tubolare"
DESCRIZIONE
L'invenzione si riferisce ad un elemento di raccordo tubolare presentente materia sintetica termoplastica per l'attacco di una conduttura flessibile per fluido.
Per serbatoi di combustibile eseguiti di materia le sintetico ed utilizzati nell'industria dell'auto mobile, raccordi di materiale sintetico stampati ad iniezione e che servono ad esempio per l'attacco di un tubo flessibile di sfiato al tubo di riempimento oppure di un tubo flessibile al serbatoio, si colle gano mediante una semplice saldatura a rotazione con un'apertura nel tubo di riempimento o nel serba toio. Il serbatoio ed il raccordo consistono di'materiale sintetico non inquinante l'ambiente e:chimi csmente. compatibile , come HDPE(High-density-Polye'--thylen) non rinforzato, ds un lato per ottenere un collegamento saldato quanto pi? a tenuta ? possibile, particolarmente a tenuta di diffusione e, dall' altro lato per poter riutilizzare i materiali. Il materialepintetico inoltre deve avere una determinata flessibilit?, affinch? il serbatoio resiste ad una sollecitazione minima per urti, come pu? prodursi ad esempio nel caso di un incidente. Un siffatto materiale, in particolare HDPE non rinfor zato, presenta tuttavia la indesiderate propriet? che sotto sollecitazione di pressione locale eleva ta , anche a temperature ambiente, tende allo "scor rimento?, cio? tende a deviare ovvero praticamente scorre via. Se perci? una conduttura flessibile per fluidi, ad esempio un tubo flessibile di elastomero oppure un tubo di materia plastica flessibile, si collega per mezzo di un giunto ad innesto od a ser raggio che esercita una pressione localmente eleva ta sul raccordo e ci? anche se ci? avviene tramite un anello a sezione torica per la messa a tenute, al raccordo, esiste il pericolo che il collegamento tre il raccordo ed il giunto tubolare con l'andare del tempo perda la capacit? di tenuta a cause della ten denze allo scorrimento.
L'invenzione ? basata sul problema di indicare un raccordo tubolare di materiale sintetico termpoplastico per l'attacco di una conduttura flessibile, in particolare di un tubo flessibile di elastomero o di un tubo di materie plastica flessibile, il quale raccordo possa da un lato essere saldato a tenute stegna con un materiale chimicamente compatibile di un serbatoio, di uns conduttura tubolare o simili e dall?altro lato resiste ad alte:sollecitazioni di pres sione senza essenziale tendenza silo scorrimento.
Secondo l'invenzione, questo problema ? risolto attraverso il fatto che il raccordo presenta une pri ma parte ed una seconda parte, delle quali 18 prima ha una tendenza a scorrimento minore rispetto ella se conda ed ? collegete con la seconda parte raediante stampaggio ad iniezione intorno a queste.
In queste soluzione, la prima parte pu? essere col legata in modo fisso ed a tenuta con la conduttura per fluido mediante un giunto, in particolare un giun to rapido con guarnizione, preferibilmente ;n anello a sezione torica, e ci? anche sotto alta pressione di serraggio, senza che il collegamento tra la conduttura per fluido e la prima psrte del raccordo subisca un deterioramento di tenuta, perch? la tendenza a scorrimento del materiale delle prima parte ?, indipendentemente da'quella delle seconda perte, quanto pi? esigua ? possibile. Viceversa, la tendenza a scorrimento del materiale della seconda parte pu? essere essenzialmensuperiore rispetto a quella del materiale della prima perte, fintante? che il materiale della seconda parte ? chimicamente compatibile con quello del serbatoio, dell8 conduttura tubolare o simile, con cui l'estremit? della seconda parte opposta alla prima parte de ve essere collegate, e permette di essere collegato con lo stesso mediante saldatura a rotazione. Il collegamento delle due parti pu? essere ottenuto, previa scelta di materiali appropriati delle due parti, mediente stampaggio ad iniezione intorno ad una delle parti, per esempio della seconde parte, con il materia le.dell'altra parte, Poich? lo stampaggio ad avvolgimento viene eseguito allo stato caldo, ancora liquido, del materiale dell'altra parte, cosicch? il materiale della prima parte allo stampaggio ad iniezione si fonde parimenti e cos? le due parti si fondono insieme.
Preferibilmente, la prima parte consiste di materia le sintetico rinforzato e la seconda parte materiale sintetico non rinforzato. Ci? conferisce una resistenza meccanica e termica particolarmente alta in condizioni di elevata sollecitazione di pressione locale.
Ci? vele in misura particolarmente alta quando il materiale sintetico presenta HDPE.
Preferibilmente, il materiale sintetico non rinfor zato presenta HDPE e-quello rinforzato unaPA (poliam? mide) .
Inoltre, il materiale sintetico rinforzato pu? contenere fibre di vetro.
Se si utilizzano per le due parti materiali sintetici chimicamente incompatibili, il materiale sin tetico di una delle due parti pu? essere modificato in adesivit?, cosicch? attraverso il riscaldamento durante lo stampaggio ad iniezione in avvolgimento si unisce con l'altra parte.
Per ottenere che il collegamento delle due parti resista anche a forze di trazione massime, le superfici di collegamento delle due parti dovrebbero essere profilate.
L'invenzione e sue elaborazio.ni sono descritte con maggior dettaglio in quanto segue in base ed esempi di attuazione preferiti, illustrati nei disegni, in cui:
la fig. 1 ? una vista laterale di un primo esempio di attuazione di un raccordo secondo l'invenzione, e la fig. 2 ? una sezione assiale di un secondo esempio di attuazione del raccordo secondo l'invenzione con una parte di parete di un serbatoio, nella cui apertura il raccordo ? fissato mediante saldatura a ro tazione.
Il raccordo illustrato nella fig. 1 consiste di una prima parte 1 e di una seconda parte 2. La prima parte 1 contiene un materiale sintetico termoplastico modificato in adesivit?, con basse tendenze e scor rimento, preferibilmente una o pi? delle poliammidi PA 6, PA 6.6, PA 6.4, PA 11 e PA 12, con un rinfrozo di fibre di vetro. Le seconde parte 2 contiene parimenti un materiale sintetico termoplastico, me con maggiore tendenze a scorrimento, preferibilmente un HBFE senza rinforzo, in cui tuttavia le meterie plastico delle prime parte ? modificata in adesivit? in vista di un collegemento con le materie plastica della seconde.p.arte..Le. due parti 1 e 2 sono collegate tre di loro in modo che depprime si realizza le seconde parte, ed esempio mediente stero paggio ad iniezione o estrusione e corrugazione,men tre la sua estremit? da collegare con la parte 1 viene profilata con scanalature periferiche J. Poi, si stampa ad iniezione le parte 1, mentre l'estremi t? profilata delle parte 2 viene circondata simulte neamente dal materiale dells parte 1 in fase di stern paggio ad iniezione. Cos?, l'estremit? profilate del le parte 2 si fonde sul suo leto esterno per effetto del calore del calore delmeteriele ancore liquido delle parte 1, cosicch? - essendo il materiale delle parte 1 modificato in adesivit? corrispondentemente al materiale della parte 2 - le due parti subiscono une unione intime. Allo stesso tempo, anche il lato interno delle estremit? delle parte 1 collegata con le parte 2 assume una profilature corrispondente e quelle del lato esterno delle parte 2, per cui le due parti subiscono un collegamento non solo ed accoppiemento di forme, me enche ad accoppiamento di materiale.
La parte 2 presente, alle sua estremit? libere, una flangia 4, le quale mediente saldature e rotezio ne viene collegata con un'apertura laterale del tubo di riempimento di un serbatoio per combustibile di un autoveicolo.
Sul lato esterno della parte 1 ? ricavate una ner vatura di ritegno 5, la quale viene investita da un tubo flessibile di elastomero, qui un tubo flessibile di sfiato. Poi, intorno al tiatto di estremit? del tubo flessibile di sfiato situato tre la zona di collegamento delle due parti 1 e 2 e la nervatura di ritegno 5 viene chiusa in serraggio una fascetta per tubi flessibili. Anche ad un'alta pressione di ser -raggio non sussiste, a causa della bessa tendenza a scorrimento del materiale della parte 2, il pericolo che il materiale della parte 1 scorri via in corri -spondenza della zona di serraggio per effetto della pressione di serraggio. In alternativa ? anche possibi le utilizzare un giunto rapido, per esempio un giunto ad innesto, il quale consiste di un manicotto da intro durre nella parte 1, il quale si impegna sul lato esterno della parte 1 con bracci di ritegno a forma di ganci fino dietro alle nervatura di ritegno 5, mentre il tubi flessibile da accoppiare ? collegato a tenuta con il manicotto, e tra il manicotto e la parte 1 ? disposto un anello di tenuta a sezio ne torica. Anche in questo caso, a'causa della bassa tendenza a scorrimento del materiale della parte 1, non vi ? alcun pericolo che lo stesso scorre via in corrispondenza dell?anello di tenuta sotto la pressione del medesimo.
Nell'esempio di attuazione secondo la fig. 2, le due parti la e 2a del raccordo tubolare consistono dello stesso materiale come le parti 1 e 2 del raccor do tubolare secondo la fig; 1, solo che in questo caso la parte 2a ? stampata ad iniezione intorno alla parte la e dapprima si realizza la parte la, profi land? la sua estremit? da collegare con la parte 2a con scanalature periferiche 3a. La parte 2a ? saldate in un'apertura 6 della parete di un serbatoio 7 consi stente di HDPE.
Gli esempi di attuazione illustrati possono essere modificati in molti riguardi. Per esempio, in luogo del materiale della parte 1, la, si pu? modificare in adesivit? la parte 2, 2a, cio? il suo materiale. Se i materiali della parte 2, 2a non sono compativili con il materiale dell'apparecchio, con il quale il raccordo tubolare deve essere collegato mediante saldatura a rotazione, in alternativa ? anche possi bile di saldare tra la parte 2, 2a e l'apertura del l'apparecchio, alla quale si deve collegare il raccordo, una ulteriore parte che sia compatibile e con il materiale della parte 2, 2a e con quello del l'apparecchio, al quale deve essere saldato il raccordo.

Claims (7)

  1. RIVENDICAZIONI 1. Elemento di raccordo tubolare presentante ma teriale sintetico termoplastico per l'attacco di u na conduttura flessibile per fluido, caratterizzato dal fatto che l'elemento di raccordo presenta una prima parte (l,la) ed una seconda parte (2;2a), delle quali la prima psrte (l;la) ha una tendenza a scorrimento minore della seconda parte (2;2a) ed ? collegata con la seconda parte (2;2a) mediente stem paggio ad iniezione intorno a questa.
  2. 2. Elemento di raccordo secondo la rivendicazione 1, caratterizzato dal fatto che la prima parte (l;le) presenta materia plastica rinforzata e la seconda parte (2;2a) materia plastica non rinforzata.
  3. 3. Elemento di raccordo secondo la rivendicazione 2, caratterizzato dal fatto che la materia plastica presenta HDPE.
  4. 4-..Elemento di raccordo secondo la rivendicazione 2, caratterizzato dal fatto che la materia plastica non rinforzata presenta HDPE e la materia plastica rinforzata presenta PA.
  5. 5. Elemento di raccordo secondo una delle rivendi cazioni 2 a caratterizzato dal fatto che la materia plastica rinforzata contiene fibre di vetro.
  6. 6. Elemento di raccordo secondo una delle rivendi cazioni 2 8 5, caratterizzato dal fatto che la materia plastica di una (l;la) delle due parti (1,1a; 2,2a) ? modificata in adesivit?, cosicch? attraver so il riscaldamento allo stampaggio ad iniezione avvolgente si collega intimamente con l'altra parte (2;2a).
  7. 7. Elemento di raccordo secondo una delle rivendicazioni 1 a 6, caratterizzato dal fatto che le su perfici di collegamento delle due parti (l,la;2,2a) sono profilate (3)?
ITTO930900A 1992-11-27 1993-11-26 Elemento di raccordo tubolare. IT1261342B (it)

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FR2698678A1 (fr) 1994-06-03
JPH06270701A (ja) 1994-09-27
JP2715870B2 (ja) 1998-02-18
US5443098A (en) 1995-08-22
IT1261342B (it) 1996-05-14
ES1026273Y (es) 1994-09-01
DE4239909C1 (de) 1994-05-05
ES1026273U (es) 1994-04-01
FR2698678B1 (fr) 1995-02-10
ITTO930900A0 (it) 1993-11-26

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