CA2227069C - Procede de fabrication d'elements de recouvrement de montant central et elements de recouvrement ainsi fabriques - Google Patents

Procede de fabrication d'elements de recouvrement de montant central et elements de recouvrement ainsi fabriques Download PDF

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Publication number
CA2227069C
CA2227069C CA002227069A CA2227069A CA2227069C CA 2227069 C CA2227069 C CA 2227069C CA 002227069 A CA002227069 A CA 002227069A CA 2227069 A CA2227069 A CA 2227069A CA 2227069 C CA2227069 C CA 2227069C
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CA
Canada
Prior art keywords
molding
generally parallel
horns
rigid
predetermined length
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.)
Expired - Fee Related
Application number
CA002227069A
Other languages
English (en)
Other versions
CA2227069A1 (fr
Inventor
Lassi Mauno Ojanen
Fritz Reichenberger
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.)
Decoma International Inc
Original Assignee
Decoma International Inc
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 Decoma International Inc filed Critical Decoma International Inc
Priority claimed from PCT/IB1996/001005 external-priority patent/WO1997003807A2/fr
Publication of CA2227069A1 publication Critical patent/CA2227069A1/fr
Application granted granted Critical
Publication of CA2227069C publication Critical patent/CA2227069C/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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/34—Moulds for undercut 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/44—Removing or ejecting moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0237—Side or rear panels
    • B60R13/025—Pillars; Roof rails
    • 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
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
    • B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

L'invention porte sur un procédé de fabrication d'éléments de recouvrement à parois minces (10) faisant intervenir un équipement de moulage (58) sous vide, consistant à effectuer un mouvement relatif entre une mince feuille (44) d'un matériau thermoplastique et l'équipement de moulage (58) sous vide (62), à y faire ensuite le vide afin de constituer une étanchéité périphérique avec une surface de la feuille (44). Ceci permet, d'une part, de mettre en contact plusieurs sections principales du corps de la feuille, espacées les unes des autres, avec des fourches de moulage (72), perpendiculairement, en règle générale, et, d'autre part, de mettre en contact des sections contiguës de la feuille chauffée (44) avec le pourtour de minces surfaces (22) de moulage de bords marginaux des fourches de moulage (72) ainsi qu'avec des surfaces de moulage à face tournée en dedans de manière à constituer plusieurs éléments de recouvrement à parois minces (10). Chacun de ces éléments de recouvrement comporte, d'une part, une section principale de corps possédant un bord marginal (14) en forme de U le long d'une de ses parties saillantes périphériques allongées, dont la forme permet un ajustement serré du bord marginal de la tôle d'une partie d'un véhicule, et, d'autre part, un rebord tourné (16) en dedans le long d'une de ses parties saillantes périphériques allongées opposées, dont la forme permet une adhérence à la surface tournée en dedans d'une partie d'un véhicule. La feuille et les éléments de recouvrement à parois minces sont alors séparés, à froid, de l'équipement de moulage sous vide; durant cette opération, les fourches de moulage (72) se déplacent de sorte que la configuration de surface formant des parties de la feuille (44) s'éloigne relativement des surfaces de moulage (60) selon une direction angulaire dont une composante va dans une direction permettant de détacher les minces surfaces (22) de moulage de bords marginaux des fourches de moulage (72) et de les éloigner relativement des bord marginaux (14) en forme de U des éléments de recouvrement à parois minces formés. Les éléments de recouvrement sont ensuite détachés de la feuille.
CA002227069A 1995-07-18 1996-07-17 Procede de fabrication d'elements de recouvrement de montant central et elements de recouvrement ainsi fabriques Expired - Fee Related CA2227069C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US50386395A 1995-07-18 1995-07-18
US08/503,863 1995-07-18
PCT/IB1996/001005 WO1997003807A2 (fr) 1995-07-18 1996-07-17 Procede de fabrication d'elements de recouvrement de montant central et elements de recouvrement ainsi fabriques

Publications (2)

Publication Number Publication Date
CA2227069A1 CA2227069A1 (fr) 1997-02-06
CA2227069C true CA2227069C (fr) 2007-02-06

Family

ID=37734898

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002227069A Expired - Fee Related CA2227069C (fr) 1995-07-18 1996-07-17 Procede de fabrication d'elements de recouvrement de montant central et elements de recouvrement ainsi fabriques

Country Status (1)

Country Link
CA (1) CA2227069C (fr)

Also Published As

Publication number Publication date
CA2227069A1 (fr) 1997-02-06

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