WO1989005718A1 - Procede et moule de compression permettant la fabrication de parties composites - Google Patents

Procede et moule de compression permettant la fabrication de parties composites Download PDF

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Publication number
WO1989005718A1
WO1989005718A1 PCT/SE1988/000682 SE8800682W WO8905718A1 WO 1989005718 A1 WO1989005718 A1 WO 1989005718A1 SE 8800682 W SE8800682 W SE 8800682W WO 8905718 A1 WO8905718 A1 WO 8905718A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
tool
manufacture
stages
mould half
Prior art date
Application number
PCT/SE1988/000682
Other languages
English (en)
Inventor
Gunnar Westerlund
Original Assignee
Ab Volvo
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 Ab Volvo filed Critical Ab Volvo
Publication of WO1989005718A1 publication Critical patent/WO1989005718A1/fr

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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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C43/06—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
    • B29C43/08—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts with circular movement, e.g. mounted on rolls, turntables
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/461—Rigid movable compressing mould parts acting independently from opening or closing action of the main mould
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • B29C2043/141—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making single layer articles
    • B29C2043/144—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making single layer articles using different moulds, i.e. the layer is compressed in consecutive steps by using different moulds for each portion of the article
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3621—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices a plurality of individual elements acting on the material in the same or diferent directions, e.g. making tubular T-joints, profiles
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/08—Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3017—Floor coverings

Definitions

  • the present invention relates to a method for manufac ⁇ turing composite components, in which a mixture of plastics material and reinforcing material is pressed between mould halves.
  • the invention also relates to a mould tool for carrying out the method, said tool comprising first and second mould halves which can be brought together so as to define a mould cavity there ⁇ between.
  • vehicle parts have been produced from composite materials within the vehicle manufacturing industry for some considerable time. This manufacture is primarily concerned with such vehicle body parts as wings, engine covers, rear deak lids (boot covers) and like vehicle parts made from reinforced thermo ⁇ etting resins, prefer ⁇ ably reinforced polyester plastics, and then primarily in respect of motor vehicles which are produced in relatively small numbers.
  • Other methods generally known in the art for manufacturing vehicle parts such as those afore- mentioned include wet pressing, injection and SMC-pre ⁇ ing methods. The two first mentioned methods are used in con ⁇ junction with preform glass-fibre reinforcements in which the glass fibres have been bonded together to form a readily handled body having a shape which conforms to that of the finished product.
  • this preform is placed in the bottom part of a mould and wetted with liquid plastic, which is poured over the preform with the form open, whereafter the mould is closed.
  • the plastic is injected into the mould cavity subsequent to closing the mould.
  • SMC-pressing methods there is used a starting material which comprises a mixture of fibres. resin and filler, which forms a leather-like sheet. A number .of such sheets are placed on part of a otrld sur- . face and flow plastically during the pressure ⁇ ha.se, to fill the mould cavity.
  • a common feature of the aforedescribed methods is that they require the provision of an intermediate product, which consequently requires the provision of intermediate . storage facilities, and none of these methods is suitable for direct application in the series manufacture of com ⁇ ponents which have large surfaces.
  • the plastics material first applied will begin to harden before the mould is closed, unless a slowly hardening plastics mixture is used. This would render the process too long for rational series produc ⁇ tion.
  • he injection method is also too slow to fulfil present day requirements of rational production processes.
  • the SMC-method is encumbered with a multiple of drawbacks, one of which is that the spread of mechanical strength values throughout the finished product is too excessive, due to unfavourable material flow.
  • the object of the present invention is to provide a method which can be used to manufacture composite products having large surfaces, and particularly surfaces which are seve ⁇ ral square meters in area, e.g. complete vehicle floors, while avoiding the drawbacks of the aforesaid methods and while enabling such products to be produced rationally and in series.
  • a mould tool for carrying out the method will have at least one mould half which is divided into several sepa ⁇ rate parts which can be moved individually in relation to the other mould half, so that the tool can be closed in stages, as material is sprayed onto the mould surface of the other mould half.
  • Figure 1 is a perspective view of a bottom mould half and a robot spray.
  • Figure 2 is a schematic, perspective view illustrating the various steps of the inventive method, and
  • Figure 3 is a sketch which illustrates the constructional principles of a mould tool.
  • the reference 1 identifies a bottom mould half or mould part of a mould tool which is refer ⁇ enced generally with 2 and which has an upper mould half 3 which is divided into four mutually separate mould parts 4, 5, 6 and 7.
  • the mould part ⁇ 1, 3 define therebetween a mould cavity for moulding a floor laminate consisting, for' instance, of a polyester plastic reinforced with glass , fibre.
  • a robot 8 equipped with a spray/fiber cutter 9 sprays a plastics mixture admixed with glass fibres directly onto the mould surface 10 of the bottom mould half.
  • Respective mould quarters 4-7 are lowered onto and pressed against the bottom mould half 1 and the material thereon rhythmically, in time with the application of material onto said bottom mould half.
  • mould pressure in the order of 0.1 bar, can be achieved by loading the mould part ⁇ 4-7 individually - with the aid of pre ⁇ sure exerting devices (not shown), e.g. compressed air piston-cylinder devices, in principle the same manner as that employed with conventional press tables.
  • pre ⁇ sure exerting devices e.g. compressed air piston-cylinder devices
  • Lower mould pressures can be achieved, by suitable adaptation of the weight of the mould parts 4-7, such that it will suffice simply to lower the mould part ⁇ into place on the bottom mould half.
  • the reference po ⁇ . 1 indicates the ⁇ tep at which material is charged to the bottom mould half.
  • po ⁇ . 2 indicates the step in which the material is compacted subsequent to all four mould parts having been placed in position with the aid of a crane 11,
  • po ⁇ . 3 indicates the step in which the material is hardened, and
  • pos. 4 indi- cates the step in which the finished floor laminate 12 is removed from the mould, subsequent to lifting away the top mould half.
  • Figure 3 illustrates schematically a mould tool whose top mould half 13 is divided into five mould parts 14, 15. 16, 17. 18, which are located sequentially in the longitudinal direction of the tool.
  • the mould parts are provided with guides and force exerting devices, for instance hydraulic or compressed air piston-cylinder de ⁇ vices for displacing the mould part ⁇ in the direction of the arrows shown in the Figure, and in opposite directions.
  • the robot 8 When applying material to the mould surface 10 of the bottom mould half 1, the robot 8 begins, by spraying material onto a region of the surface located opposite the mould part 14. Immediately this region of the surface has been coated with material, the mould part 14 is pressed against the material on the oppositely located region of the mould surface 10. Charging and pressing of material is carried out sequentially and in stages, in a corresponding manner (from left to right as seen in Figure 3), until finally the terminal mould part 18 is pressed against the underlying mould surface.
  • the mould part ⁇ 4-7 and 14-18 respectively may be cold or heated, depending on the type of plastics material to be moulded and on desired hardening times.
  • the heat transfer between mutually adjacent moulds can be limited as far as po ⁇ sible, by providing the ⁇ ides of the mould parts with recesses 20, so that the mould part ⁇ will only present small contacting surfaces therebetween, as illustrated in Figure 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Procédé et outil de moulage permettant de réaliser des produits composites de superficie importante, par exemple des planchers pour véhicules automobiles. On pulvérise une charge de matière comprenant une matière plastique mélangée avec des fibres, sur une surface de moulage (10) située sur un demi-moule (1). On presse par étapes une seconde moitié (13) à parties multiples, contre la matière, à mesure que la matière est chargée sur la surface de moulage.
PCT/SE1988/000682 1987-12-16 1988-12-14 Procede et moule de compression permettant la fabrication de parties composites WO1989005718A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8705017A SE460271B (sv) 1987-12-16 1987-12-16 Foerfarande och formverktyg foer framstaellning av kompositdetaljer
SE8705017-5 1987-12-16

Publications (1)

Publication Number Publication Date
WO1989005718A1 true WO1989005718A1 (fr) 1989-06-29

Family

ID=20370612

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000682 WO1989005718A1 (fr) 1987-12-16 1988-12-14 Procede et moule de compression permettant la fabrication de parties composites

Country Status (2)

Country Link
SE (1) SE460271B (fr)
WO (1) WO1989005718A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999017914A1 (fr) * 1997-10-02 1999-04-15 Borealis Gmbh Procede de pressage differencie
WO2017051383A1 (fr) * 2015-09-25 2017-03-30 Sabic Global Technologies B.V. Procédé de moulage à l'aide de noyaux de moule et appareil associé
US9890764B2 (en) * 2014-03-26 2018-02-13 General Electric Company Trailing edge cap for a rotor blade and method of manufacturing same
WO2019081904A1 (fr) * 2017-10-23 2019-05-02 Mclaren Automotive Limited Agencement de moulage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1175022A (fr) * 1957-05-13 1959-03-19 Renault Perfectionnements à la fabrication des préformes en fibres
US3901641A (en) * 1971-06-24 1975-08-26 Alusuisse Compacting step by step
US4514353A (en) * 1983-06-29 1985-04-30 International Paper Company Apparatus and method for forming a multi-compartmented tray from a sheet material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1175022A (fr) * 1957-05-13 1959-03-19 Renault Perfectionnements à la fabrication des préformes en fibres
US3901641A (en) * 1971-06-24 1975-08-26 Alusuisse Compacting step by step
US4514353A (en) * 1983-06-29 1985-04-30 International Paper Company Apparatus and method for forming a multi-compartmented tray from a sheet material

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999017914A1 (fr) * 1997-10-02 1999-04-15 Borealis Gmbh Procede de pressage differencie
US9890764B2 (en) * 2014-03-26 2018-02-13 General Electric Company Trailing edge cap for a rotor blade and method of manufacturing same
WO2017051383A1 (fr) * 2015-09-25 2017-03-30 Sabic Global Technologies B.V. Procédé de moulage à l'aide de noyaux de moule et appareil associé
US11117299B2 (en) 2015-09-25 2021-09-14 Sabic Global Technologies B.V. Method of molding using mold inserts and apparatus therefor
WO2019081904A1 (fr) * 2017-10-23 2019-05-02 Mclaren Automotive Limited Agencement de moulage
CN111491772A (zh) * 2017-10-23 2020-08-04 迈凯轮汽车有限公司 模制装置
GB2567699B (en) * 2017-10-23 2022-02-09 Mclaren Automotive Ltd Moulding arrangement
CN111491772B (zh) * 2017-10-23 2022-06-14 迈凯轮汽车有限公司 模制装置
EP3700729B1 (fr) * 2017-10-23 2023-07-26 McLaren Automotive Limited Agencement de moulage

Also Published As

Publication number Publication date
SE8705017D0 (sv) 1987-12-16
SE8705017L (sv) 1989-06-17
SE460271B (sv) 1989-09-25

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