FR2924972A1 - Procede de mise en forme permettant le soudage d'une piece rapportee sur une piece a mouler. - Google Patents

Procede de mise en forme permettant le soudage d'une piece rapportee sur une piece a mouler. Download PDF

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Publication number
FR2924972A1
FR2924972A1 FR0759791A FR0759791A FR2924972A1 FR 2924972 A1 FR2924972 A1 FR 2924972A1 FR 0759791 A FR0759791 A FR 0759791A FR 0759791 A FR0759791 A FR 0759791A FR 2924972 A1 FR2924972 A1 FR 2924972A1
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FR
France
Prior art keywords
mold
substrate
insert
zone
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR0759791A
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English (en)
Other versions
FR2924972B1 (fr
Inventor
Hugo Piccin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faurecia Interieur Industrie SAS
Original Assignee
Faurecia Interieur Industrie SAS
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Filing date
Publication date
Application filed by Faurecia Interieur Industrie SAS filed Critical Faurecia Interieur Industrie SAS
Priority to FR0759791A priority Critical patent/FR2924972B1/fr
Publication of FR2924972A1 publication Critical patent/FR2924972A1/fr
Application granted granted Critical
Publication of FR2924972B1 publication Critical patent/FR2924972B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/52Heating or cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/022Particular heating or welding methods not otherwise provided for
    • B29C65/028Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30Electrical means
    • B29C65/305Electrical means involving the use of cartridge heaters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30Electrical means
    • B29C65/32Induction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841Holding or clamping means for handling purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/305Decorative or coloured joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/348Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394General 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 thermoset
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8182General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
    • B29C66/81821General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832Reciprocating joining or pressing tools
    • B29C66/8322Joining or pressing tools reciprocating along one axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421Measuring 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441Measuring 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
    • B29C66/91443Measuring 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
    • B29C66/91445Measuring 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 by steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192Measuring 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
    • B29C66/91921Measuring 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
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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Plasma & Fusion (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne essentiellement un procédé de moulage d'un substrat plastique (2.1, 2.2) au moyen d'un moule (1) comportant deux demi-moules (1.1, 1.2). Dans ce procédé, on dispose au moins une pièce rapportée (4) en thermoplastique à l'état solide à l'intérieur d'une ouverture (5) ménagée dans un des demi-moules (1.1, 1.2). Conformément à l'invention, on adapte localement la température du moule (1) dans une zone régulée (7) située autour de la pièce rapportée (4), de sorte que l'interface (17) entre la pièce rapportée (4) et le substrat (2.1, 2.2) puissent atteindre une température permettant le soudage de la pièce (4) sur le substrat (2.1, 2.2) tout en évitant la déformation de ladite pièce rapportée.

Description

Procédé de mise en forme permettant le soudage d'une pièce rapportée sur une pièce à mouler [0001]. La présente invention concerne un procédé de moulage d'une pièce plastique. L'invention a notamment pour but d'effectuer simultanément le moulage de la pièce plastique et le soudage d'une pièce rapportée en thermoplastique sur la pièce plastique à mouler.
[0002]. L'invention trouve une application particulièrement avantageuse, mais non exclusive, pour souder des pièces thermoplastiques sur un médaillon de porte de véhicule automobile lors du moulage dudit médaillon. [0003]. Dans les procédés de moulage classiques, on dispose à l'intérieur d'un moule un matériau thermodurcissable ou thermoplastique, de matériau pouvant être associé à des fibres naturelles. La forme désirée est imposée au matériau en fermant le moule qui met sous pression le matériau.
[0004]. On rappelle qu'un matériau thermodurcissable perd définitivement toute plasticité sous l'effet de la chaleur en prenant sa forme définitive dès la première montée en température, tandis qu'un matériau thermoplastique peut fondre ou ramollir sous l'effet de la chaleur sans que ses propriétés soient largement modifiées et ainsi faire l'objet de plusieurs moulages successifs. [0005]. Suivant la nature du matériau, le moule est chauffé ou non. En effet, dans le cas d'un matériau thermoplastique, le matériau est chauffé avant d'être disposé à l'intérieur d'un moule froid. Alors que dans le cas d'un matériau thermodurcissable, le moule chauffe le matériau disposé à l'intérieur afin de le polymériser. [0006]. Dans l'état de la technique, pour attacher une pièce rapportée en thermoplastique (obtenue par exemple par injection) à une pièce thermoformée obtenue par moulage, on colle la pièce rapportée sur la pièce thermoformée après l'étape de moulage de la pièce thermoformée.
[0007]. Toutefois, d'un point de vue économique, il serait avantageux de pouvoir effectuer en même temps le moulage du matériau disposé dans le moule pour obtenir la pièce thermoformée, appelé substrat, et le soudage de la pièce rapportée sur la pièce thermoformée.
[0008]. Ce soudage pourrait être effectué par fusion des matériaux à l'endroit de l'interface entre le substrat et la pièce rapportée, à l'intérieur du moule, comme décrit dans les documents JP-8229966 et JP-2003181933.
[0009]. Toutefois, la température recommandée pour effectuer le moulage du substrat et la température recommandée pour la fusion à l'interface entre le substrat et la pièce rapportée peuvent être sensiblement incompatibles. En particulier, la température recommandée pour effectuer le moulage risque d'engendrer la déformation de la pièce rapportée.
[00010]. Il existe donc le besoin d'un procédé permettant simultanément le moulage du substrat et le soudage de la pièce rapportée sur le substrat tout en évitant la déformation de la pièce rapportée. [00011]. L'invention comble notamment ce besoin en proposant un moule présentant des ouvertures destinées à recevoir les pièces thermoplastiques rapportées, des zones régulées en température à une température différente de celle du reste du moule étant ménagées autour de ces ouvertures.
[00012]. Suivant la nature du matériau à thermoformer, la zone est régulée soit en chaud de manière à présenter une température supérieure à la température du moule, soit en froid de manière à présenter une température inférieure à la température du moule. Dans les deux cas, la pièce rapportée est maintenue à une température telle qu'elle ne se déforme pas et que l'interface entre le substrat et la pièce rapportée puisse atteindre la température de fusion des deux matériaux.
[00013]. Ainsi, lors du moulage d'une pièce thermodurcissable, on refroidit la zone régulée par rapport au reste du moule en la maintenant par exemple à une température comprise entre 120 et 170 degrés alors que le reste du moule présente une température de l'ordre de 200 degrés. Dans cette mise en oeuvre, le soudage se produit en fin de cycle de moulage lorsqu'une énergie suffisante a été apportée à l'interface entre les matériaux pour qu'ils puissent entrer en fusion.
[00014]. A cet effet, la zone régulée est délimitée par des barrières thermiques qui isolent thermiquement la zone régulée du reste du moule. En outre, un fluide de refroidissement parcoure la zone régulée afin d'en extraire des calories pour la refroidir.
[00015]. En revanche, lors du moulage d'une pièce thermoplastique, on chauffe la zone régulée par rapport au reste du moule en la maintenant à une température comprise entre 20 et 170°C, alors que le reste du moule présente une température de l'ordre de 20°C.
[00016]. A cet effet, la zone régulée est délimitée par des barrières thermiques qui isolent la zone régulée du reste du moule. Des inducteurs positionnés autour de la zone régulée permettent de chauffer par induction ladite zone régulée.
[00017]. L'invention concerne donc un procédé de moulage d'un substrat plastique au moyen d'un moule comportant deux demi-moules caractérisé en ce qu'il comporte les étapes suivantes : - on dispose au moins une pièce rapportée en thermoplastique à l'état solide à l'intérieur d'une ouverture ménagée dans un des demi-moules, - on dispose le substrat à l'intérieur du moule de manière que ce substrat recouvre la pièce rapportée, et - on ferme le moule en le maintenant sous pression de manière à imposer la forme souhaitée au substrat, et - on adapte localement la température du moule dans une zone régulée située autour de la pièce rapportée, la température de cette zone régulée étant différente de celle du reste du moule, de sorte que - la pièce rapportée et le substrat puissent atteindre leur température de fusion uniquement à l'endroit de l'interface entre ladite pièce rapportée et le substrat afin de permettre le soudage de la pièce rapportée sur le substrat, - tout en évitant la déformation de ladite pièce rapportée. [00018]. Selon une mise en oeuvre, le substrat étant un plastique thermodurcissable, on chauffe l'ensemble du moule lors de l'opération de moulage afin de polymériser le substrat, et on refroidit la zone régulée par rapport au reste du moule. [00019]. Selon une mise en oeuvre, on chauffe l'ensemble du moule à une température d'environ 200°C, et on maintient la zone régulée à une température comprise entre 120°C et 170°C.
[00020]. Selon une mise en oeuvre, pour refroidir la zone régulée, on délimite cette zone régulée au moyen de barrières thermiques afin de l'isoler thermiquement du reste du moule et on en extrait des calories en faisant circuler un liquide de refroidissement.
[00021]. Selon une mise en oeuvre, le substrat étant un plastique thermoplastique chauffé avant d'être disposé dans le moule, on refroidit le moule lors de l'opération de moulage afin de solidifier le substrat, et on chauffe la zone régulée par rapport au reste du moule.
[00022]. Selon une mise en oeuvre, on refroidit l'ensemble du moule à une température d'environ 20°C, et on maintient la zone régulée à une température comprise entre 20°C et 170°C.
[00023]. Selon une mise en oeuvre, pour chauffer la zone régulée, on 20 délimite la zone régulée au moyen de barrières thermiques et on chauffe par induction cette zone régulée.
[00024]. L'invention concerne en outre un moule destiné au moulage d'un substrat plastique comportant : - un demi-moule inférieur et un demi-moule supérieur, 25 - une cavité ménagée dans un des demi-moules destinée à accueillir une pièce rapportée en thermoplastique à l'état solide, et -une zone régulée située autour de la cavité, la température de cette zone étant différente de celle du reste du moule, de sorte que - la pièce rapportée et le substrat puissent atteindre leur température de fusion uniquement à l'endroit de l'interface entre ladite pièce rapportée et le substrat afin de permettre le soudage de la pièce rapportée sur le substrat, - tout en évitant la déformation de ladite pièce rapportée.
[00025]. Selon une réalisation, le moule comporte des barrières thermiques délimitant la zone régulée pour isoler thermiquement la zone régulée du reste du moule.
[00026]. Selon une réalisation, les barrières thermiques sont des plaques de type DME.
[00027]. Selon une réalisation, le moule étant destiné à mouler un substrat thermodurcissable, le moule comporte des moyens pour chauffer le substrat, la zone régulée comportant des moyens, tels qu'un circuit de refroidissement, pour refroidir la pièce rapportée.
[00028]. Selon une réalisation, le moule étant destiné à mouler un substrat thermoplastique, il comporte des moyens pour refroidir le substrat, la zone régulée comportant des moyens, tels que des bobines électriques, pour chauffer la pièce rapportée par induction.
[00029]. Selon une réalisation, la zone régulée comporte un matériau thermiquement conducteur.
[00030]. Selon une réalisation, le matériau thermiquement conducteur contient du cuivre.
[00031]. L'invention sera mieux comprise à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Ces figures ne sont données qu'à titre illustratif mais nullement limitatif de l'invention. Elles montrent : [00032]. Figure 1 : une vue de côté d'un moule selon l'invention permettant de mouler un matériau thermodurcissable tout en soudant une pièce rapportée sur la pièce moulée ; [00033]. Figures 2a-2c : des représentations schématiques des étapes du procédé selon l'invention mis en oeuvre au moyen du moule de la figure 1 ;
[00034]. Figure 2d : une représentation schématique de la pièce obtenue à l'issue des étapes des figures 2a-2c ; [00035]. Figure 3: une représentation d'un moule selon l'invention permettant de mouler un matériau thermoplastique tout en soudant une pièce rapportée sur la pièce moulée ;
[00036]. Figures 4a-4c : des représentations schématiques des étapes du procédé selon l'invention mis en oeuvre au moyen du moule de la figure 3 ; [00037]. Figure 4d : une représentation schématique de la pièce obtenue à l'issue des étapes des figures 4a-4c.
[00038]. Les éléments identiques conservent la même référence d'une figure à l'autre.
[00039]. La figure 1 montre une vue en coupe d'un moule 1 selon l'invention comportant un demi-moule inférieur 1.1 et un demi-moule 1.2 supérieur. Ce moule 1 est utilisé pour mouler un substrat 2.1 thermodurcissable et souder simultanément sur la pièce moulée une pièce rapportée 4 en thermoplastique à l'état solide obtenue préalablement par injection ou par thermoformage.
[00040]. Dans une mise en oeuvre, la pièce à mouler est un médaillon appartenant à un panneau de porte d'un véhicule automobile tandis que la pièce 4 à souder sur ce médaillon est un insert thermoplastique.
[00041]. Plus précisément, pour polymériser le substrat 2.1, le moule 1 est parcouru par un liquide chaud, tel que de l'huile chaude, qui circule à l'intérieur d'un réseau de canalisations 6 ménagé à l'intérieur des demi- moules 1.1 et 1.2. [00042]. Par ailleurs, le demi-moule inférieur 1.1 comporte une cavité 5 destinée à accueillir la pièce rapportée 4. Ce demi-moule 1.1 comporte une zone régulée 7 située autour de la cavité 5, cette zone régulée 7 étant délimitée par des barrières thermiques 8.
[00043]. Ces barrières thermiques 8 permettent d'isoler thermiquement la zone régulée 7 du reste du moule 1 chauffé. Ces barrières thermiques 8 peuvent par exemple être des plaques de DME (résine thermodurcissable) thermiquement isolantes.
[00044]. Par ailleurs, la zone régulée 7 est parcourue par un fluide de refroidissement qui circule à l'intérieur d'un réseau de canalisations 10 10 ménagé à l'intérieur de la zone régulée 7.
[00045]. En outre, de préférence, la zone régulée 7 contient un matériau thermiquement conducteur, tel que du cuivre, afin que le liquide de refroidissement puisse extraire le maximum de chaleur de la zone 7. La zone régulée 7 présente ainsi en coupe une structure feuilletée barrière 15 thermique/matériau conducteur/barrière thermique.
[00046]. Pour mouler le substrat 2.1 et souder simultanément la pièce rapportée 4 sur la pièce moulée, on effectue les étapes suivantes.
[00047]. Tout d'abord, comme représenté sur la figure 2a, la pièce rapportée 4 est positionnée à l'intérieur de la cavité 5, de manière que la 20 surface externe 14 de la pièce 4 se situe sensiblement dans le prolongement de la surface 15 du moule 1, la pièce 4 pouvant s'étendre légèrement au-delà de la surface 15 afin de faciliter la phase de soudage.
[00048]. Dans une deuxième étape représentée sur la figure 2b, on dispose le substrat 2.1 associé à des fibres naturelles sur le demi-moule 1.1, de 25 manière que ce substrat 2.1 recouvre la surface 14 affleurante de la pièce 4.
[00049]. Dans une troisième étape représentée sur la figure 2c, le moule supérieur 1.2 est descendu et pressé contre le moule inférieur 1.1 de manière à imprimer la forme du moule au substrat 2.1. [00050]. Le moule 1 présente une température de l'ordre de 200°C afin de polymériser le substrat 2.1, tandis que la zone régulée 7 présente une température comprise entre 130 et 170°C.
[00051]. La température de l'interface 17 entre le substrat 2.1 et la pièce rapportée 4 est adaptée afin de permettre la fusion du substrat 2.1 et de la pièce rapportée 4 uniquement à l'endroit dudit interface 17, tout en évitant la déformation de la pièce 4.
[00052]. La fusion à l'interface 17 des matériaux de la pièce à mouler 2.1 et de la pièce rapportée 4 est observable en fin du cycle de moulage lorsque le substrat 2.1 est suffisamment polymérisé pour que la réticulation du substrat à l'interface 17 puisse se réaliser.
[00053]. Une fois la cuisson du substrat 2.1 effectuée, la pièce obtenue est retirée du moule 1. Cette pièce, représentée sur la figure 2d, comporte un insert 4 intégré dans la pièce moulée en forme de médaillon. [00054]. En variante, la cavité 5 et la zone régulée 7 sont ménagés dans le demi-moule supérieur 1.2 et/ou les demi-moules 1.1, 1.2 sont chauffés par un système à induction.
[00055]. La figure 3 montre une réalisation d'un moule 1 permettant de mouler un substrat 2.2 thermoplastique et souder simultanément sur la pièce moulée une pièce rapportée 4 en thermoplastique à l'état solide obtenue préalablement par injection ou par thermoformage.
[00056]. Dans cette réalisation, les demi-moules 1.1 et 1.2 présentent la même structure que ceux de la figure 1 à l'exception du fait que le réseau de canalisations 6 est remplacé par un circuit de canalisations 18 parcouru par un liquide de refroidissement afin de refroidir le moule 1.
[00057]. En outre, le réseau de canalisations 10 est remplacé par des bobines 19 de chauffage par induction positionnées autour de la zone régulée 7, à la surface du moule 1, afin de chauffer par induction la zone régulée 7.
[00058]. Pour mouler le substrat 2.2 et souder simultanément la pièce rapportée 4 sur la pièce moulée, on effectue les étapes suivantes.
[00059]. Tout d'abord, dans une étape non représentée, le substrat thermoplastique 2.2 associé à des fibres naturelles est chauffé.
[00060]. Comme représenté sur la figure 4a, la pièce rapportée 4 est positionnée à l'intérieur de la cavité 5, de manière que la surface externe 14 de la pièce 4 se situe sensiblement dans le prolongement de la surface 15 du moule 1, la pièce 4 pouvant s'étendre légèrement au-delà de la surface 15 afin de faciliter la phase de soudage.
[00061]. Dans une deuxième étape représentée sur la figure 4b, on dispose le substrat 2.2 chaud sur le demi-moule 1.1, de manière que ce substrat 2.2 recouvre la surface 14 affleurante de la pièce rapportée 4.
[00062]. Dans une troisième étape représentée sur la figure 4c, le moule supérieur 1.2 est descendu et pressé contre le moule inférieur 1.1 de manière à imprimer la forme du moule au substrat 2.2.
[00063]. Le moule 1 présente une température de l'ordre de 20°C afin de solidifier le substrat 2.2, tandis que la zone régulée 7 présente une température comprise entre 20 et 170°C. [00064]. La température de l'interface 17 entre le substrat 2.2 et la pièce rapportée 4 est adaptée afin de permettre la fusion du substrat 2.2 et de la pièce rapportée 4 uniquement à l'endroit dudit interface 17, tout en évitant la déformation de la pièce rapportée 4.
[00065]. La fusion à l'interface 17 simultanée des matériaux du substrat 2.2 et de la pièce 4 est observable au début du cycle de moulage lorsque le substrat 2.2 chaud déposé apporte suffisamment d'énergie pour que la fusion des matériaux à l'interface 17 puisse être réalisée. 9 [00066]. Une fois que le substrat 2.2 est solidifié, la pièce obtenue est retirée du moule 1. Cette pièce, représentée sur la figure 4d, comporte un insert 4 intégré dans la pièce moulée en forme de médaillon de porte.

Claims (8)

REVENDICATIONS
1. Procédé de moulage d'un substrat plastique (2.1,
2.2) au moyen d'un moule (1) comportant deux demi-moules (1.1, 1.2) caractérisé en ce qu'il comporte les étapes suivantes : - on dispose au moins une pièce rapportée (4) en thermoplastique à l'état solide à l'intérieur d'une ouverture (5) ménagée dans un des demi-moules (1.1, 1.2), - on dispose le substrat (2.1, 2.2) à l'intérieur du moule (1) de manière que ce substrat (2.1, 2.2) recouvre la pièce rapportée (4), et - on ferme le moule (1) en le maintenant sous pression de manière à imposer la forme souhaitée au substrat (2.1, 2.2), et - on adapte localement la température du moule (1) dans une zone régulée (7) située autour de la pièce rapportée (4), la température de cette zone régulée (7) étant différente de celle du reste du moule (1), de sorte que - la pièce rapportée (4) et le substrat (2.1, 2.2) puissent atteindre leur température de fusion uniquement à l'endroit de l'interface (17) entre ladite pièce rapportée (4) et le substrat (2.1, 2.2) afin de permettre le soudage de la pièce rapportée (4) sur le substrat, - tout en évitant la déformation de ladite pièce rapportée (4). 2. Procédé selon la revendication 1, caractérisé en ce que, le substrat (2.1) étant un plastique thermodurcissable, on chauffe l'ensemble du moule (1) lors de l'opération de moulage afin de polymériser le substrat (2.1, 2.2), et on refroidit la zone régulée (7) par rapport au reste du moule (1).
3. Procédé selon la revendication 2, caractérisé en ce que : - on chauffe l'ensemble du moule (1) à une température d'environ 200°C, et on maintient la zone régulée (7) à une température comprise entre 120°C et 170°C.
4. Procédé selon la revendication 2 ou 3, caractérisé en ce que pour refroidir la zone régulée (7), on délimite cette zone régulée (7) au moyen de barrières thermiques (8) afin de l'isoler thermiquement du reste du moule (1) et on en extrait des calories en faisant circuler un liquide de refroidissement.
5. Procédé selon la revendication 1, caractérisé en ce que, le substrat (2.2) étant un plastique thermoplastique chauffé avant d'être disposé dans le moule (1), on refroidit le moule (1) lors de l'opération de moulage afin de solidifier le substrat (2.2), et on chauffe la zone régulée (7) par rapport au reste du moule (1).
6. Procédé selon la revendication 5, caractérisé en ce que on refroidit l'ensemble du moule (1) à une température d'environ 20°C, et on maintient la 10 zone régulée (7) à une température comprise entre 20°C et 170°C.
7. Procédé selon la revendication 5 ou 6, caractérisé en ce que pour chauffer la zone régulée (7), on délimite la zone régulée (7) au moyen de barrières thermiques (8) et on chauffe par induction cette zone régulée (7). 15
8. Moule destiné au moulage d'un substrat (2) plastique comportant : - un demi-moule inférieur (1.1) et un demi-moule supérieur (1.2), - une cavité (5) ménagée dans un des demi-moules (1.1, 1.2) destinée à accueillir une pièce rapportée (4) en thermoplastique à l'état solide, et 20 - une zone régulée (7) située autour de la cavité (5), la température de cette zone (7) étant différente de celle du reste du moule (1), de sorte que - la pièce rapportée (4) et le substrat (2.1, 2.2) puissent atteindre leur température de fusion uniquement à l'endroit de l'interface (17) entre ladite pièce rapportée (4) et le substrat (2.1, 2.2) afin de permettre le soudage de la 25 pièce rapportée (4) sur le substrat, - tout en évitant la déformation de ladite pièce rapportée (4). 13. Moule selon la revendication 8, caractérisé en ce qu'il comporte des barrières thermiques (8) délimitant la zone régulée (7) pour isoler 30 thermiquement la zone régulée (7) du reste du moule (1). 14. Moule selon la revendication 9, caractérisé en ce que les barrières thermiques (8) sont des plaques de type DME. 35 11. Moule selon l'une des revendications 8 à 10, caractérisé en ce quele moule (1) étant destiné à mouler un substrat thermodurcissable (2.1), le moule (1) comporte des moyens (6) pour chauffer le substrat (2.1), la zone régulée (7) comportant des moyens (10), tels qu'un circuit de refroidissement, pour refroidir la pièce rapportée (4). 12. Moule selon l'une des revendications 8 à 11, caractérisé en ce que le moule (1) étant destiné à mouler un substrat thermoplastique (2), il comporte des moyens (18) pour refroidir le substrat (2), la zone régulée (7) comportant des moyens (19), tels que des bobines électriques, pour chauffer la pièce rapportée (4) par induction. 13. Moule selon l'une des revendications 8 à 12, caractérisé en ce que la zone régulée (7) comporte un matériau thermiquement conducteur. 14. Moule selon la revendication 13, caractérisé en ce que le matériau thermiquement conducteur contient du cuivre.
FR0759791A 2007-12-12 2007-12-12 Procede de mise en forme permettant le soudage d'une piece rapportee sur une piece a mouler. Active FR2924972B1 (fr)

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WO2014114955A1 (fr) * 2013-01-25 2014-07-31 Penso Holdings Ltd Procédé et appareil pour la production de composants en fibre de carbone
EP3789174A1 (fr) * 2019-09-05 2021-03-10 Motherson Innovations Company Limited Composant de revêtement intérieur de forme tridimensionnelle pour un véhicule automobile ainsi que dispositif et procédé de fabrication d'un tel composant de revêtement intérieur

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US5196151A (en) * 1990-09-11 1993-03-23 Toyoda Gosei Co., Ltd. Method for producing foam base material product with securing device
US5804018A (en) * 1992-06-12 1998-09-08 Donnelly Corporation Method for making vehicular panel assembly
EP1892077A1 (fr) * 2006-08-24 2008-02-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Procédé et dispositif de fabrication d'un composant de matériau composite renforcé par des fibres

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US5196151A (en) * 1990-09-11 1993-03-23 Toyoda Gosei Co., Ltd. Method for producing foam base material product with securing device
DE4137249C1 (fr) * 1991-11-13 1993-02-11 Gurit-Essex Ag, Freienbach, Ch
US5804018A (en) * 1992-06-12 1998-09-08 Donnelly Corporation Method for making vehicular panel assembly
EP1892077A1 (fr) * 2006-08-24 2008-02-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Procédé et dispositif de fabrication d'un composant de matériau composite renforcé par des fibres

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014114955A1 (fr) * 2013-01-25 2014-07-31 Penso Holdings Ltd Procédé et appareil pour la production de composants en fibre de carbone
EP3789174A1 (fr) * 2019-09-05 2021-03-10 Motherson Innovations Company Limited Composant de revêtement intérieur de forme tridimensionnelle pour un véhicule automobile ainsi que dispositif et procédé de fabrication d'un tel composant de revêtement intérieur

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