WO2007118643A1 - Procédé de fabrication d'un corps façonné - Google Patents

Procédé de fabrication d'un corps façonné Download PDF

Info

Publication number
WO2007118643A1
WO2007118643A1 PCT/EP2007/003195 EP2007003195W WO2007118643A1 WO 2007118643 A1 WO2007118643 A1 WO 2007118643A1 EP 2007003195 W EP2007003195 W EP 2007003195W WO 2007118643 A1 WO2007118643 A1 WO 2007118643A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic profile
profile
cold
gripping device
shaping
Prior art date
Application number
PCT/EP2007/003195
Other languages
German (de)
English (en)
Inventor
Herbert Börger
Ulrich Schwarz
Original Assignee
Boerger Herbert
Ulrich Schwarz
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 Boerger Herbert, Ulrich Schwarz filed Critical Boerger Herbert
Publication of WO2007118643A1 publication Critical patent/WO2007118643A1/fr

Links

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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • A63B49/11—Frames made of non-metallic materials, other than wood with inflatable tubes, e.g. inflatable during fabrication
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations
    • 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
    • B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
    • B29L2031/5245—Rackets

Definitions

  • the invention is directed to a method for the production of a shaped body, starting from a plastic profile reinforced with unidirectional, incorporated, endless fibers.
  • the invention has for its object to design such a method so that a high degree of automation of the manufacturing process is achieved with relatively short clock characters with optimal shape and strength properties of the final product.
  • This object is achieved in that a bending shaping of the plastic profile by deforming the same between an outer and inner die, wherein the plastic profile is heated in the central region, the ends of the plastic profile are kept cold or cooled, the cold ends of the Plastic profiles are detected during the entire shaping operation of a gripping device and are acted upon by an axial tensile force, and wherein the cold ends are bent by means of the gripping device against the bending direction during the forming process.
  • the heating of the central region of the semifinished product takes place via the melting point.
  • the heated semi-finished blank is kept clamped at the cold ends, which must be designed so that they can be precisely controlled in different directions.
  • the deposition of the semifinished product or the plastic profile in the mold can be done relatively quickly.
  • the unidirectional continuous fibers always lie stretched smoothly in the laminate and are not compressed or torn, which would affect the performance of the resulting product extraordinarily negative.
  • the orientation of the captured cold profile ends relative to the component geometry during and after completion of the molding phase of the heated plastic profile, that is, in the time interval in which the molten matrix slipping allows the fibers against each other.
  • the embodiment according to the invention makes it possible to produce high-performance fiber-reinforced plastic parts with high productivity and a short cycle time.
  • a film sealing tube into a hollow plastic profile to be deformed, and to apply its ends in the blowing process with compressed air.
  • the method according to the invention is suitable, for example, for producing curved leaf springs or a tennis racket frame, wherein it can be provided that starting from a tubular thermoplastic extruded profile, the deformation begins at the outer vertex of the racket surface of the frame and the cooled ends begin at the end the shaping process outside of the racket style, which is formed by merging sections of the plastic profile parallel to each other, adjacent to each other.
  • the tube walls can either join directly to a central bar or on both sides of a, the Profiiate there separating hard or elastic intermediate plate rest, which may have a supporting or damping function.
  • Fig. 1 is a schematic drawing illustrating the principle of the method according to the invention.
  • Fig. 2 to 6 are schematic representations of various successive stages of the method according to the invention in the manufacture of a tennis racket frame.
  • a plastic profile 1 is shown, which, for example, as
  • Pipe is formed, which alike but also a solid profile, z. B. a bar profile of any cross section, can be.
  • the plastic profile 1 is present as a straight tube made of polyamide 6 with unidirectionally extending in the longitudinal direction, endless, incorporated into the plastic base material graphite reinforcing fibers.
  • the shaping method according to the invention is intended to bend the straight, tubular plastic profile 1, as shown in FIG. 1, in the initial state.
  • complex shapes can be realized by means of the method according to the invention, in the present case for Explanation of the invention particularly simple geometric relationships were used.
  • the middle region M is heated, while the two end sections E are kept cold.
  • the middle region is deformed between a male mold 2 and a female mold 3, as explained in greater detail below in connection with FIGS. 2 to 6.
  • the inner boundary region 4 is deformed with a bending radius Ri and the outer boundary region 5 with a bending radius R a , so that the unidirectional reinforcing fibers extending there are stretched differently, as shown in FIG. 1 by the arrow 6 for the length of the outer Fibers and is illustrated by the arrow 7 for the length of the internal fibers, wherein the arrowheads respectively denote the end of fiber sections of the same absolute length.
  • the cold ends are held by a gripping device and are pivoted outward in the direction of the arrow 8 by an angle ⁇ .
  • the die 3 consists of two pivotable about a pivot bearing 9 mold halves 10, 11 and the male part 2 of a molded part 12 with a circumferential groove 13 open in the radial direction corresponding to the outer contour of a tennis racket frame, wherein in this groove 13 for shaping a plastic lprofi profi 1 of polyamide 6 is inserted with carbon reinforcing fibers.
  • the cold ends E are grasped and held by means of a gripping device, wherein an axial tensile force in the direction of the arrows 14 and 15 is maintained during the entire shaping process.
  • Fig. 2 the initial phase is shown, in which the plastic profile 1 is still undeformed linear.
  • the plastic profile 1 is located in the mold groove 13 of the male part 2, and the female mold 3 or its mold halves 10, 11 are progressively folded together in the direction of the arrows 16, 17 As illustrated in connection with FIGS. 4 to 6, the plastic profile 1 is inserted further and further into the groove 13 around the male part 2. In this case, an axial tensile force is further maintained in the direction of the arrows 14 and 15 and the cold ends E, as shown in Fig. 4 to 6, against the bending of the plastic profile 1 in the form bent outward.
  • Fig. 6 illustrates the final state of the molding.
  • a film tube with a wall thickness of for example 200 microns of polyamide 6.6 be inserted, wherein the ends of the film tube (which is not shown in the figure) are subjected to pressure in accordance with the known blowing method to the Foil hose to the inner wall of the plastic profile to be deformed and the plastic profile 1 in turn against the inner wall of the mold halves 10, 11 of the die 3, so that a uniform outer contour is obtained.
  • the inner plastic tube provides a seal so that the compressed air can not escape even if the deformed profile should have received cracks or the like during the molding process.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un corps façonné en partant d'un profilé en matière plastique renforcé de fibres sans fin incorporées unidirectionnelle, comprenant le façonnage par flexion du profilé en matière plastique par déformation de celui-ci entre une matrice (3) extérieure et intérieure, le profilé (1) en matière plastique étant chauffé dans la partie centrale, les extrémités du profilé (1) en matière plastique étant maintenues froides ou étant refroidies, les extrémités E froides du profilé (1) en matière plastique étant saisies par un dispositif de préhension pendant toute l'opération de façonnage et soumises à une force de traction axiale et les extrémités E froides étant pliées au moyen du dispositif de préhension à l'opposé du sens de flexion lors du procédé de façonnage.
PCT/EP2007/003195 2006-04-15 2007-04-11 Procédé de fabrication d'un corps façonné WO2007118643A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006017771A DE102006017771A1 (de) 2006-04-15 2006-04-15 Verfahren zur Herstellung eines Formkörpers
DE102006017771.1 2006-04-15

Publications (1)

Publication Number Publication Date
WO2007118643A1 true WO2007118643A1 (fr) 2007-10-25

Family

ID=38308601

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/003195 WO2007118643A1 (fr) 2006-04-15 2007-04-11 Procédé de fabrication d'un corps façonné

Country Status (2)

Country Link
DE (1) DE102006017771A1 (fr)
WO (1) WO2007118643A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007047012A1 (de) 2007-10-01 2009-04-02 Thermoplast Composite Gmbh Verfahren zur Herstellung eines Formkörpers aus Kunststoff
DE102017120143A1 (de) 2017-09-01 2019-03-07 Groz-Beckert Kg Biegeverfahren und Biegevorrichtung zum Biegen eines Verbundwerkstoffstabes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017218997A1 (de) * 2017-10-24 2019-04-25 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zum Umformen eines Rohlings aus faserverstärktem Thermoplast

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108652A1 (fr) * 1982-06-14 1984-05-16 Cousin Freres S.A. Cadre de raquette de tennis et son procédé de fabrication
EP0199246A2 (fr) * 1985-04-22 1986-10-29 Aluminum Company Of America Procédé pour le déformage plastique d'objets creux allongés
JPH01108020A (ja) * 1987-10-21 1989-04-25 Mitsubishi Plastics Ind Ltd 合成樹脂管の曲げ加工法
US5456591A (en) * 1994-07-26 1995-10-10 Kun-Nan Lo Apparatus for preforming a main body of a racket frame from a softened fiber reinforced thermoplastic resin composite tube
JP2003200488A (ja) * 2002-01-08 2003-07-15 Sekisui Chem Co Ltd ポリオレフィン系樹脂ベンド管の製造方法

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3483055A (en) * 1966-03-28 1969-12-09 Robert Wayne Eshbaugh Method for forming a fiber glass racket frame
IT975226B (it) * 1972-06-20 1974-07-20 Kicherer K Procedimento per la fabbricazione di racchette da tennis
AT383307B (de) * 1980-12-01 1987-06-25 Dietzel Gmbh Vorrichtung zum herstellen eines gebogenen hohlkoerpers
US5326524A (en) * 1990-03-23 1994-07-05 Phillips Petroleum Company Method of making plastic rods
FR2681282B1 (fr) * 1991-09-17 1995-02-24 Acb Procede pour le cintrage dans un plan d'un profile en materiau composite constitue de fibres longues dans une matrice thermoplastique.
DE9405073U1 (de) * 1994-03-24 1994-06-01 Hsu, Henry Y.C., Taichung Schlägerrahmen aus einem Kompositmaterial
CN1074714C (zh) * 1994-03-24 2001-11-14 东丽株式会社 球拍及其制造方法
GB9610273D0 (en) * 1996-05-16 1996-07-24 Cardiotech International Limit Making an access graft
DE29723809U1 (de) * 1997-11-18 1999-04-15 Schulz, Hans Georg, 33609 Bielefeld Vorrichtung zum Verformen von Werkstücken aus thermoplastischen, dielektrischen Kunststoffen
DE10222256B4 (de) * 2002-05-16 2004-03-25 Wegener Gmbh Verfahren zum Biegen von Kunststoffrohren sowie Biegevorrichtung zur Durchführung dieses Verfahrens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108652A1 (fr) * 1982-06-14 1984-05-16 Cousin Freres S.A. Cadre de raquette de tennis et son procédé de fabrication
EP0199246A2 (fr) * 1985-04-22 1986-10-29 Aluminum Company Of America Procédé pour le déformage plastique d'objets creux allongés
JPH01108020A (ja) * 1987-10-21 1989-04-25 Mitsubishi Plastics Ind Ltd 合成樹脂管の曲げ加工法
US5456591A (en) * 1994-07-26 1995-10-10 Kun-Nan Lo Apparatus for preforming a main body of a racket frame from a softened fiber reinforced thermoplastic resin composite tube
JP2003200488A (ja) * 2002-01-08 2003-07-15 Sekisui Chem Co Ltd ポリオレフィン系樹脂ベンド管の製造方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007047012A1 (de) 2007-10-01 2009-04-02 Thermoplast Composite Gmbh Verfahren zur Herstellung eines Formkörpers aus Kunststoff
WO2009046795A1 (fr) 2007-10-01 2009-04-16 Thermoplast Composite Gmbh Procédé pour fabriquer un corps façonné à partir de matière plastique
US8695202B2 (en) 2007-10-01 2014-04-15 Thermoplast Composite Gmbh Method for the production of a moulded part from plastic material
DE102017120143A1 (de) 2017-09-01 2019-03-07 Groz-Beckert Kg Biegeverfahren und Biegevorrichtung zum Biegen eines Verbundwerkstoffstabes
WO2019042895A1 (fr) 2017-09-01 2019-03-07 Groz-Beckert Kommanditgesellschaft Procédé et dispositif de cintrage pour le cintrage d'une barre en matériau composite
US11724437B2 (en) 2017-09-01 2023-08-15 Solidian Gmbh Bending method for bending a composite bar

Also Published As

Publication number Publication date
DE102006017771A1 (de) 2008-03-27

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