FR2691099A1 - Dispositif pour solidariser entre eux des objets en matériaux composites par application simultanée de chaleur et de pression. - Google Patents

Dispositif pour solidariser entre eux des objets en matériaux composites par application simultanée de chaleur et de pression. Download PDF

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Publication number
FR2691099A1
FR2691099A1 FR9205784A FR9205784A FR2691099A1 FR 2691099 A1 FR2691099 A1 FR 2691099A1 FR 9205784 A FR9205784 A FR 9205784A FR 9205784 A FR9205784 A FR 9205784A FR 2691099 A1 FR2691099 A1 FR 2691099A1
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FR
France
Prior art keywords
stack
pressure
frame
elastomer block
bladder
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
FR9205784A
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English (en)
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FR2691099B1 (fr
Inventor
Calventus Antoine
Bouchet Jean-Marie
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.)
Dassault Aviation SA
Original Assignee
Dassault Aviation SA
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 Dassault Aviation SA filed Critical Dassault Aviation SA
Priority to FR9205784A priority Critical patent/FR2691099B1/fr
Publication of FR2691099A1 publication Critical patent/FR2691099A1/fr
Application granted granted Critical
Publication of FR2691099B1 publication Critical patent/FR2691099B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining 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
    • B29C65/26—Hot fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/324—Avoiding burr formation
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/326—Shaping the burr, e.g. by the joining tool
    • 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
    • B29C66/40—General 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
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/434—Joining substantially flat articles for forming corner connections, fork connections or cross connections
    • B29C66/4344—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces
    • B29C66/43441—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces, H-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/812—General 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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General 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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/814—General 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
    • B29C66/8141—General 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
    • B29C66/81427—General 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 ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/814—General 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
    • B29C66/8145—General 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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General 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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/818—General 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
    • B29C66/8182—General 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
    • B29C66/81821—General 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General 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
    • B29C66/818—General 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
    • B29C66/8183—General 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 conducting constructional aspects
    • B29C66/81831—General 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 conducting constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B29C66/82421—Pneumatic or hydraulic drives using an inflatable element positioned between the joining tool and a backing-up part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
    • B29C2035/042—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids other than water
    • B29C2035/044—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids other than water mercury
    • 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
    • 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
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    • B29C66/8122—General 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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
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    • B29C66/8126—General 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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
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    • B29C66/818—General 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
    • B29C66/8181—General 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
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    • B29K2277/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as reinforcement
    • B29K2277/10—Aromatic polyamides [Polyaramides] or derivatives thereof
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    • B29K2905/00—Use of metals, their alloys or their compounds, as mould material
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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Ce dispositif, particulièrement adapté au soudage de matériaux composites, comprend: a) un ensemble chauffant comprenant une pièce d'appui métallique rigide (3) comportant un ou plusieurs moyens de chauffage, de préférence des tubes de transfert de chaleur à changement d'état (4), et destinée à venir en appui contre une face de l'empilement (2) des objets à solidariser, b) un ensemble presseur, destiné à venir en appui sur la face opposée de l'empilement, et comportant: - une vessie gonflable (11), en appui par un côté sur le bâti (1), - un bloc d'élastomère (13) disposé sur le côté opposé de la vessie, - une feuille métallique (14) intercalée entre le bloc d'élastomère et l'empilement (2), pour égaliser dans l'empilement à la fois la température et la pression transmise par le bloc d'élastomère.

Description

La présente invention est relative à un outillage chauffant destiné à l'assemblage des matériaux composites par soudage ou par collage.
En aéronautique, on utilise traditionnellement des structures métalliques assemblées par rivetage.
Récemment est apparue l'utilisation de matériaux composites constitués de fibres (carbone, aramide, verre), enrobées dans une résine thermoplastique ou thermodurcissable. Il est possible d'assembler des matériaux composites sans rivetage, par des techniques telles que le collage ou la co-cuisson. On peut obtenir ainsi les avantages suivants
- suppression des perçages pour les rivets, perçages qui affaiblissent les pièces et conduisent à les surdimentionner, et donc augmenter leur poids,
- gain de poids résultant de la suppression des rivets eux-mêmes,
- gain de temps sur les opérations de pose des rivets,
- obtention plus facile de l'étanchéité nécessaire pour les réservoirs ou les zones pressurisées.
Cependant le collage n'aboutit pas toujours aux caractéristiques mécaniques et chimiques désirées. En outre, si la colle est thermodurcissable, l'opération d'assemblage doit comprendre un passage dans un autoclave ou une étuve pendant un temps convenable, ce qui complique l'outillage et réduit les cadences.
Les techniques de co-cuisson comportent aussi un passage en autoclave ou en étuve, et présentent le même inconvénient.
D'autres techniques d'assemblage de matières composites existent
- Les composites thermoplastiques peuvent être assemblés par fusion localisée des deux pièces à assembler. Cette fusion nécessite un apport de chaleur.
- Les composites thermodurcissables peuvent être assemblés par polymérisation à chaud d'un film de colle à l'interface des deux pièces à assembler.
Ces techniques sont connues dans une technique qui est assez voisine de l'assemblage des objets, et qui est celle de la fabrication de pièces de matériaux composites à partir de feuilles empilées.
Le document GB-A-2.114.055 décrit un procédé de fabrication de thermoplastiques renforcés de fibres qui comprend les étapes suivantes
a) imprégner les fibres avec un matériau thermoplastique,
b) empiler alternativement des feuilles de matériaux thermoplastiques et les fibres imprégnées,
c) soumettre la pile à la chaleur à la pression, dans un moule préchauffé ou une presse dont les plateaux sont préchauffés, pour lier ensemble les feuilles thermoplastiques et les fibres,
d) laisser refroidir le moule ou la presse.
Dans l'étape c), les chaleur, pression, et temps opératoire doivent seulement être suffisants pour ledit collage.
Le document EP-A-0255.315 décrit un procédé analogue comportant l'emploi d'une presse à plateaux chauffés pour appliquer simultanément la chaleur et la pression à un empilement comprenant des feuilles thermoplastiques contenant des fibres.
Il est difficile d'obtenir une température homogène sur toute la surface d'un moule ou d'un plateau de presse, notamment à cause d'effets de bord et/ou d'une épaisseur non constante de la paroi de moule ou plateau.
Il est également difficile d'avoir une pression homogène, même avec des plateaux de presse bien parallèles, car l'épaisseur initiale de la pile n'est pas toujours constante et n'est pas facile à contrôler.
Dans le document US-A-4.765.942, on place l'empilement entre un support rigide et une membrane souple et liée de façon étanche au support sur les bords, on fait le vide dans l'espace limité par la membrane et le support , puis on place lrensemble dans une étuve pour le chauffer à la température désirée. Ce procédé permet une pression et une température homogènes mais il a pour inconvénients que la pression appliquée est la pression atmosphérique, dont on n'est pas le maître, et qui varie dans le temps, et que le chauffage en étuve est lent, ce qui rend le procédé coûteux pour une production importante.
L'absence d'un procédé satisfaisant d'assemblage par application de chaleur et de pression a pour conséquence que, dans de nombreux cas, notamment quand on désire assembler une tôle en matériau composite avec un autre élément, comme une pièce de renfort, on préfère utiliser la technique traditionnelle du rivetage.
La présente invention a pour but de fournir un appareillage qui permette d'assembler, de façon simple et rapide, des objets formés de matériaux composites, la jonction étant d'une qualité plus constante, d'un point à un autre, que celle des jonctions actuellement disponibles, tout en permettant une production de masse, avec un rapport qualité/ (prix et temps d'obtention) qui soit meilleur que selon les techniques actuelles.
Pour obtenir ce résultat, l'invention fournit un dispositif pour solidariser entre eux des objets par application simultanée de chaleur et de pression, comprenant
a) un ensemble chauffant comprenant une pièce métallique rigide portée par un bâti, à l'intérieur de laquelle sont disposés un ou plusieurs moyens de chauffage, cette pièce métallique présentant une surface de contact destinée à venir en appui contre une face de l'empilement des objets à solidariser,
b) un ensemble presseur, destiné à venir en appui sur la face opposée de l'empilement, et comportant
- une vessie gonflable, en appui par un côté sur le bâti,
- un bloc d'élastomère disposé sur le côté opposé de la vessie,
- une feuille métallique intercalée entre le bloc d'élastomère et l'empilement.
De préférence, le moyen de chauffage est un tube de transfert de chaleur à changement d'état, c'est-à-dire un corps creux étanche contenant un liquide en équilibre avec sa propre vapeur. Les échanges de chaleur à l'intérieur de ce corps creux se font par évaporation et condensation, et le transport de la chaleur est effectué par le fluide caloporteur. Cet ensemble possède une conductivité thermique très élevée qui compense les défauts d'homogénéité provenant des variations d'épaisseurs et des discontinuités. De tels tubes de transfert de chaleur sont commercialisés sous la dénomination "CALODUC" par la
Société Française : "Innovations Thermiques 38300-Montbonnot, France.
- la vessie gonflable assure une pression isostatique, donc constante, sur toute la surface,
- l'élastomère isole thermiquement la pile d'objets, le chauffage ne se faisant que du côté de l'ensemble chauffant, le pouvoir isolant de l'élastomère agit sur la pénétration de la zone fondue. L'élastomère permet aussi d'absorber les variations d'épaisseur provenant soit des tolérances de fabrication des pièces soit des changements de nombre de couches de composite,
- l'association de l'élastomère et de la vessie constitue un moyen économique pour réaliser une contreforme qui épouse parfaitement le profil de la section chauffante sans nécessiter de précision d'usinage,
- la feuille métallique possède une épaisseur, une largeur et un coefficient de conduction calculés pour assurer un étalement de la chaleur dans le sens transversal tout en ayant une souplesse suffisante pour ne pas nuire à la qualité de la répartition de pression.
De plus, elle empêche un contact direct entre l'élastomère et le matériau composite. Un tel contact serait de nature à dégrader profondément l'état de surface de l'élastomère et du matériau composite. Selon le cas, le métal n'adhère pas au matériau composite, ou bien l'adhérence peut être évitée à l'aide d'un agent de démoulage ou d'un film intercalaire, par exemple un film pelable, selon des techniques connues en elles-mêmes.
Dans le cas où le dispositif est destiné à solidariser un premier objet avec un second objet de plus petite extension transversale, le long d'une zone de bordure du second objet, on prévoit avantageusement que la pièce d'appui comporte une nervure d'appui contre laquelle le bord du second objet peut venir en appui pour un bon confinement de la zone fondue ou ramollie destinée à constituer la liaison, afin d'égaliser la température au voisinage du bord, et surtout d'empêcher un fluage non contrôlé. Un tel fluage, en effet, pourrait aboutir à libérer des extrémités de fibres incluses dans le matériau, et ces fibres pourraient alors blesser le personnel lors de manipulations ultérieures.
L'invention va maintenant être décrite de façon plus détaillée à l'aide des dessins, parmi lesquels
Figure 1 représente une coupe schématique du dispositif selon l'invention, et
Figures 2 et 3 sont des coupes de détail, à plus grande échelle, illustrant des variantes du dispositif.
La figure 1 montre que le dispositif comporte un bâti 1, représenté en forme de "col de cygne", de dimension prévue en fonction de la taille des objets à assembler. Ces objets sont, dans le cas de la figure 1, constitués par un empilement 2 de deux plaques de matière composite.
L'empilement 2 repose sur un ensemble chauffant formé d'une pièce d'acier en deux parties, 3A, 3B, superposées et assemblées entre-elles. A l'intérieur de la masse de la pièce 3 sont placés des "CALODUCS" à mercure 4, en contact thermique étroit avec la pièce 3. Ces "CALODUCS" sont, dans l'exemple décrit, des tubes d'acier inoxydable fermés à leurs extrémités, ou formant un circuit fermé, et dont le point haut se trouve dans le bloc 3, et le point bas est relié à un dispositif de chauffage 6, un passage de la phase vapeur à la phase liquide s' opérant dans le bloc 3, et définissant une température uniforme pour celui-ci. Le mercure a été choisi de préférence à un liquide organique en raison de la faible pression nécessaire pour obtenir l'ébullition dans la gamme de températures utilisées. En effet, la pression d'ébullition de ce corps reste sensiblement inférieure à deux bars absolus jusqu'a 400"C environ.
Pour améliorer la transmission de chaleur entre les tubes 4 du caloduc et la pièce 3, on a disposé une crème conductrice de la chaleur, constituée ici par une graisse contenant des particules de cuivre, entre ces tubes et les rainures à section en demi-cercle des parties 3A et 3B de la pièce 3 qui les reçoivent.
On a représenté en 7, une couche d'isolation, placée sous la partie inférieure 3B et destinée à limiter la transmission de chaleur de la pièce 3 vers le bâti. On notera que, dans une variante préférée, la pièce 3 est monobloc, les tubes 4 du "CALODUC" étant placés alors entre la pièce 3 et la couche d'isolation 7.
L'empilement 2 repose sur la face supérieure, ici sensiblement plane et horizontale, de la pièce 3, et, sur cet empilement 2 agit l'ensemble presseur, qu'on va maintenant décrire.
Une "virole" de guidage 8, fermée à son extrémité supérieure, est montée sur la partie supérieure du bâti, son extrémité ouverte étant dirigée vers le bas. A l'intérieur de la virole 8 est disposée une vessie 9, reliée à des moyens de gonflage symbolisés en 10, et qui peuvent être soit une pompe, soit un réservoir de gaz comprimé, comme de l'azote, soit, plus simplement, l'air comprimé du réseau de l'usine.
Dans l'exemple décrit, l'empilement 2 a, en vue de dessus, une forme rectangulaire, et la pièce 3, ainsi que la virole 8 ont des formes correspondantes.
Sous la vessie 9 est disposée une masse 11 d'élastomère silicone, dont la section, par un plan horizontal, est sensiblement la même que celle de la virole 8 et qui fait saillie vers le bas au-delà de l'extrémité de celle-ci. Dans l'exemple décrit, on utilise un élastomère de dureté 60 Shore A, sans que cette valeur soit limitative.
Entre la masse d'élastomère 11 et l'empilement 2, est intercalée une feuille 12 d'alliage d'aluminium. Les dimensions de cette feuille doivent être choisies avec soin en fonction du problème posé, car elle participe largement à la pénétration dans l'assemblage de la zone fondue ou ramollie, qui constituera la liaison. A la figure 1, la feuille 12 s'étend un peu au-delà des bords des pièces de l'empilement 2, ce qui garantit que la liaison s'étend jusqu'à ces bords. Les figures 2 et 3 montrent des dispositions différentes, correspondant à des cas particuliers. Dans les exemples décrits, pour la feuille 12, on a préféré un alliage d'aluminium présentant une grande déformabilité, en feuille de 1 à 2 mm d'épaisseur. On obtient ainsi une bonne égalisation de la température dans le sens transversal, et une bonne égalisation de la pression provenant de la vessie et transmise par le bloc d'élastomère 11. Il est clair que d'autres matériaux peuvent être utilisés, en fonction des problèmes posés.
Un agent de démoulage classique est utilisé pour éviter tout risque d'adhérence entre la feuille 12 et l'empilement. D'autres techniques sont possibles, comme on l'a dit plus haut.
La figure 2 montre une variante de la disposition de la figure 1, destinée à souder, sur une tôle de matière composite 20, un renforcement 21 en forme de cornière.
Dans ce cas, la tôle 20 s'étend largement au-delà des limites de la pièce 3 et de la feuille 12. On obtient, par le procédé de l'invention, et avec une pièce 3 et une feuille 12 de dimension adaptée, une soudure continue entre les pièces 20 et 21, de façon largement plus avantageuse que par les techniques usuelles de rivetage ou de soudage par point.
La figure 3 montre une variante de la figure 2, dans laquelle la face supérieure de la pièce 3 a simplement été pourvue d'une nervure 22, qui sert de surface d'appui pour l'extrémité de la pièce 21 en forme de cornière. Cette nervure constitue une barrière de confinement pour la zone fondue ou ramollie. La transmission de chaleur par la nervure 22 permet également d'obtenir avec une plus grande certitude un soudage efficace jusqu'au bord de cette pièce 21. On obtient ainsi une liaison à bords très réguliers.
On notera que la forme de la nervure est calculée pour permettre d'utiliser soit son bord gauche, comme représenté, soit son bord droit. On peut ainsi utiliser le même outillage pour assembler des pièces de formes symétriques.
Le caloduc 4, dans le cas d'une zone de liaison allongée, est disposé parallèlement à la plus grande dimension de la zone soudée et à peu près dans le plan longitudinal médian de celle-ci, de façon à obtenir une bonne homogénéité de température. On a pu souder ainsi, en une seule opération, des éléments de cornière atteignant une longueur de 1200 mm pour une largeur de 20 mm ou même 15 mm.
Sur les figures, la face supérieure de la pièce 3 paraît plane et horizontale. Elle peut également avoir une forme et une orientation différentes, adaptées à celle de l'empilement. Elle peut, notamment, être incurvée, pour permettre, par exemple, la soudure de renforts sur des surfaces gauches.

Claims (9)

REVENDICATIONS
1. Dispositif pour solidariser entre eux des objets empilés par application simultanée de chaleur et de pression, caractérisé en ce qu'il comprend
a) un ensemble chauffant comprenant une pièce d'appui métallique rigide (3) portée par un bâti (1), à l'intérieur de laquelle sont disposés un ou plusieurs moyens de chauffage (4), cette pièce métallique présentant une surface de contact destinée à venir en appui contre une face de l'empilement (2)des objets à solidariser,
b) un ensemble presseur, destiné à venir en appui sur la face opposée de l'empilement, et comportant
- une vessie gonflable (9), en appui par un côté sur le bâti (1),
- un bloc d'élastomère (11) disposé sur le côté opposé de la vessie,
- une feuille métallique déformable (12) intercalée entre le bloc d'élastomère et l'empilement (2), cette feuille ayant des dimensions et un coefficient de conduction calculés pour assurer à la fois une répartition homogène de la température sur sa surface de la liaison prévue, et une répartition homogène de la pression transmise par le bloc d'élastomère à l'empilement.
2. Dispositif selon la revendication 1, caractérisé en ce que le moyen de chauffage est un tube de transfert de chaleur à changement d'état.
3. Dispositif selon la revendication 2, caractérisé en ce que le tube de transfert de chaleur à changement d'état est un tube contenant du mercure (5).
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la vessie (9) et la partie du bloc d'élastomère (11) qui est en contact avec la vessie sont placées dans une virole de guidage (8) montée sur le bâti.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la feuille métallique déformable (12) est en un alliage d'aluminium à grande déformabilité.
6. Dispositif selon l'une des revendications 1 à 5 caractérisé en ce que la pièce d'appui (3) est démontable en deux parties, dont l'une (3B) est en appui sur le bâti (1) et l'autre (3A) comporte une surface de forme adaptée à celle de l'empilement pour venir en contact avec lui, et le, ou les moyens de chauffage (4) sont logés dans des rainures prévues dans les surfaces de contact entre lesdites parties (3A, 3B) de la pièce métallique.
7. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'une couche d'isolation (6) est intercalée entre la pièce d'appui (3) et le bâti (2), et le, ou les moyens de chauffage (4) sont logés entre la couche d'isolation et le bâti.
8. Dispositif selon l'une des revendications 1 à 7, et destiné à solidariser un premier objet (20) avec un second objet (21) de plus petite extension transversale, le long d'une zone de bordure du second objet, caractérisé en ce que la pièce d'appui (3) comporte une nervure d'appui (22) contre laquelle le bord du second objet peut venir en appui pour un bon confinement d'une zone fondue ou ramollie destinée à constituer la liaison.
9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce qu'un moyen de chauffage (4) est disposé parallèlement à l'allongement de la zone soudée, et à peu près dans le plan longitudinal médian de celle-ci.
FR9205784A 1992-05-13 1992-05-13 Dispositif pour solidariser entre eux des objets en materiaux composites par application simultanee de chaleur et de pression. Expired - Fee Related FR2691099B1 (fr)

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EP0749824A2 (fr) * 1995-06-19 1996-12-27 GR Systems Dispositif de pressage et procédé le soudage par recouvrement de feuilles en matière thermoplastique
FR2987305A1 (fr) * 2012-02-29 2013-08-30 Daher Aerospace Procede et dispositif pour le soudage a haute temperature d'un raidisseur sur un panneau composite a matrice thermoplastique
EP3132917A1 (fr) * 2013-02-05 2017-02-22 Graf Synergy S.r.L. Moyens de pression pour des dispositifs de soudage d'éléments profilés en matière plastique, notamment en pvc
US10569530B2 (en) 2012-03-06 2020-02-25 Stahls' Inc. Threadable heat transfer press with heated lower platen

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0749824A2 (fr) * 1995-06-19 1996-12-27 GR Systems Dispositif de pressage et procédé le soudage par recouvrement de feuilles en matière thermoplastique
EP0749824A3 (fr) * 1995-06-19 1997-07-30 Gr Systems Dispositif de pressage et procédé le soudage par recouvrement de feuilles en matière thermoplastique
FR2987305A1 (fr) * 2012-02-29 2013-08-30 Daher Aerospace Procede et dispositif pour le soudage a haute temperature d'un raidisseur sur un panneau composite a matrice thermoplastique
WO2013128140A1 (fr) * 2012-02-29 2013-09-06 Daher Aerospace Procédé et dispositif pour le soudage a haute température d'un raidisseur sur un panneau composite a matrice thermoplastique
US9919504B2 (en) 2012-02-29 2018-03-20 Daher Aerospace Device for high-temperature welding of a stiffener on a composite panel having a thermoplastic matrix
US10569530B2 (en) 2012-03-06 2020-02-25 Stahls' Inc. Threadable heat transfer press with heated lower platen
EP3132917A1 (fr) * 2013-02-05 2017-02-22 Graf Synergy S.r.L. Moyens de pression pour des dispositifs de soudage d'éléments profilés en matière plastique, notamment en pvc

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