EP1665951A2 - Dispositif pour l'attachement de touffes de matériel thermoplastique sur des porte-soies pour la production de brosses et des brosses ainsi fabriquées - Google Patents

Dispositif pour l'attachement de touffes de matériel thermoplastique sur des porte-soies pour la production de brosses et des brosses ainsi fabriquées Download PDF

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Publication number
EP1665951A2
EP1665951A2 EP20050017847 EP05017847A EP1665951A2 EP 1665951 A2 EP1665951 A2 EP 1665951A2 EP 20050017847 EP20050017847 EP 20050017847 EP 05017847 A EP05017847 A EP 05017847A EP 1665951 A2 EP1665951 A2 EP 1665951A2
Authority
EP
European Patent Office
Prior art keywords
bristle
recess
solid body
tufts
brushes
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.)
Withdrawn
Application number
EP20050017847
Other languages
German (de)
English (en)
Other versions
EP1665951A3 (fr
Inventor
Bart Gerard Boucherie
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.)
GB Boucherie NV
Original Assignee
GB Boucherie NV
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 GB Boucherie NV filed Critical GB Boucherie NV
Publication of EP1665951A2 publication Critical patent/EP1665951A2/fr
Publication of EP1665951A3 publication Critical patent/EP1665951A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/04—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by mouldable materials, e.g. metals, cellulose derivatives, plastics
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body

Definitions

  • the invention relates to a device for fixing bristle tufts of thermoplastic material to carrier plates for the production of brushes. Furthermore, the invention relates to the brushes produced with the device, in particular toothbrushes. In these brushes, the carrier plates are mounted with the bristle tufts attached thereto in brush body or attached thereto.
  • brush bodies can be provided with a perforated field which corresponds to the desired bristle field.
  • the bristle bundles are then inserted into the holes of the brush body and anchored therein.
  • the anchoring of the bristle tufts in the brush body by means of pressed-metallic anchor plates or by means of loops.
  • the bristle tufts are attached to a carrier plate without loops or anchor plates, which are then installed or attached to a brush body ,
  • the carrier plate can with the Brush body can be connected by overmolding or welding.
  • the carrier plate is provided with holes corresponding to the desired hole pattern.
  • the bristle tufts are inserted into the holes, wherein on one surface of the carrier, the use-side ends of the bristle tufts and on the opposite side slightly protrude into the brush to be anchored axial ends of the bristle tufts.
  • a heated stamp is pressed, by means of which the ends of the bristle tufts are fused together and optionally converted into a thickening. Since both the bristle ends and the carrier plate are heated in this step, it is difficult to cause on the one hand the deformation required for proper anchoring of the bristles and, on the other hand, to prevent undesired deformation of the carrier plate.
  • the stamp has a body of electrically conductive material, on which two high-current electrical connections in the form of angled contact shoes are formed.
  • the body of the stamp has a thin-walled stamp plate, which can be stiffened by an angled edge strip.
  • Suitable materials for the production of the stamp are metals, on the one hand have sufficient mechanical strength, so that the desired for the rapid temperature change low heat capacity is ensured, on the other hand, however, have a relatively high resistivity, so that the electric heating power provided by a non-critical low electrical voltage can be.
  • the required heating currents are then values of one hundred amperes and more, for example two hundred amps at 7 volts, such high currents can be well controlled with available semiconductor elements. Due to the above criteria, stainless steel, titanium and NiCr-containing alloys are suitable materials for the production of the stamp.
  • Brushes in particular toothbrushes, are subject to rapid development, which calls for constantly new functional and design features.
  • the AFT process opens up new design possibilities by means of almost any cross-sectional shapes of the bristle tufts to be inserted into the carrier platelets.
  • One challenge is the integration of structured elements within a bristle field, e.g. B. elastomeric elements as special cleaning or massage elements, and the consideration of raised or recessed shapes of the carrier plate.
  • Such structural elements and designs can be produced in two-component injection molding with the carrier plates or molded on the body of the carrier plate or recessed.
  • attachment of the bristle tufts to such carrier plates proves to be problematic because the structural elements and shapes formed thereon or deformed by the heated die used to secure the tufts to the carrier plate can be deformed, damaged or destroyed.
  • the present invention makes it possible to apply the AFT method also to carrier plates having on or molded structural elements such as elastomer elements and / or raised or recessed designs.
  • the recess is congruent with the surface area of the carrier plate to be preserved by the stamp before being heated, so that the structural elements and configurations present there are protected against deformation or damage by the heated punch.
  • the recess or recesses but have a disturbance of the current distribution in the mass of the punch result.
  • each recess of the solid body is preferably surrounded by a circumferential bead.
  • the material thickening is preferably dimensioned so that the disturbance caused by the recess of the current distribution of the solid body passing through electrical current is substantially compensated.
  • a brush is created, which has a completely new design and can be manufactured in AFT technology.
  • This brush has on the one hand a bristle field with bristle tufts of any cross-sectional shape, but on the other hand elastomeric elements which are integrated into the bristle field, or generally projecting or recessed design and structural elements on the surface facing away from the bristle field.
  • The. Production of such a brush according to the AFT method is made possible only by the device according to the invention, since the base surfaces of the structural or design elements corresponding surface areas are recessed in the heatable stamp and the die despite the recesses homogeneous and heated uniformly over its surface by electrical current flow becomes.
  • the heatable stamp shown generally at 10 in FIG. 1, is part of an apparatus for manufacturing toothbrushes according to the AFT method explained in the introduction.
  • this method provided with bristle tufts carrier plate is inserted into a brush head and welded to it. Details of such a device can be found, for example, in EP 0 972 464 A1 and EP 0 972 465 A1.
  • the basic design and function of the punch 10 are described in detail in EP 1 136 017 B1.
  • stamp 10 are for producing a generally designated 12 brush head plate bristle tufts 14 a, 14 b, 14 c ... on a Carrier plate 16 attached by the projecting through the openings of the carrier plate bristle ends are fused by pressing the heated punch 10.
  • the punch 10 has two rectangular solid terminal blocks 18, 20 and integrally connected therebetween an elongated punch body 22.
  • the plunger body 22 consists of two coplanar terminal walls 24, 26 which extend from the terminal blocks 18 and 20 inwardly, two vertically from the terminal walls Angled support walls 28, 30 and a die plate 32 which extends between the support walls 28, 30 and has an elongated-oval shape corresponding to the shape of a toothbrush head.
  • the plunger body 22 forms a total of an electrical "heating resistor", which is traversed by the zoom over the terminal blocks 18, 20 electrical current and thereby heated.
  • the current distribution must be homogeneous, since the heat generated resistively depends on the current density.
  • the "heating resistor” as a very (infinitely) large number of individual resistors, which are connected in parallel between the terminal blocks 18, 20.
  • the brush head plate 12 has, in addition to the bristle tufts 14a, 14b, 14c ..., a structural element 34 which projects from the mounting side of the carrier plate 16 from the latter.
  • This structural element 34 may in particular be the base end of an elastomeric element which projects through an opening of the carrier plate 16 and is inserted on the bristle side into the bristle field.
  • Such an elastomer element can supplement the bristle tufts, for example as a massage element.
  • the structural element 34 may also be a molded pin or the like.
  • a carrier plate 12 a is shown which has a through opening 35 at the location of the structural element 34.
  • the surface corresponding to the base end of the structural member 34 and the opening 35 is recessed.
  • the recess 36 thus formed is bounded by a circumferential bead 38.
  • the dimensioning of the circumferential bead is carried out in such a way that the is compensated by the recess 36 caused disturbance of the current density. This avoids local overheating at the edge of the recess.
  • the brush head platelets 12 and 12a shown in FIGS. 1 and 1a are only examples which show the basic design possibilities which result from the combination of the AFT process with the two-component injection molding technique for the production of carrier platelets with molded-in or molded elastomer elements or with single or molded designs.
  • the finished carrier platelets with bristle tufts attached thereto and structural or design elements are then fastened to a brush body, as described, for example, in EP 0 972 464 A1 and EP 0 972 465 A1.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
EP20050017847 2004-10-22 2005-08-17 Dispositif pour l'attachement de touffes de matériel thermoplastique sur des porte-soies pour la production de brosses et des brosses ainsi fabriquées Withdrawn EP1665951A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200420016414 DE202004016414U1 (de) 2004-10-22 2004-10-22 Vorrichtung zur Befestigung von Borstenbüscheln aus thermoplastischem Kunststoff an Trägerplättchen zur Herstellung von Bürsten und damit hergestellte Bürste

Publications (2)

Publication Number Publication Date
EP1665951A2 true EP1665951A2 (fr) 2006-06-07
EP1665951A3 EP1665951A3 (fr) 2009-10-28

Family

ID=34223716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050017847 Withdrawn EP1665951A3 (fr) 2004-10-22 2005-08-17 Dispositif pour l'attachement de touffes de matériel thermoplastique sur des porte-soies pour la production de brosses et des brosses ainsi fabriquées

Country Status (2)

Country Link
EP (1) EP1665951A3 (fr)
DE (1) DE202004016414U1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0972465A1 (fr) 1998-07-14 2000-01-19 Firma G.B. BOUCHERIE, naamloze vennootschap Procédé de fabrication de brosses et machine de fabrication de brosses pour l'application de ce procédé
EP1136017B1 (fr) 2000-03-21 2003-06-25 G.B. Boucherie, N.V. Procédé et dispositif pour la fusion des extrêmités de poils

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4027288C2 (de) * 1990-08-29 2001-08-09 Coronet Werke Gmbh Vorrichtung zur Erzeugung von Borstenbündeln und Verfahren zur Herstellung von Borstenwaren mittels der Vorrichtung
DE19853030A1 (de) * 1998-11-18 2000-05-25 Coronet Werke Gmbh Verfahren zur Herstellung von Borstenwaren und Vorrichtung zur Durchführung des Verfahrens
ES2201626T3 (es) * 1999-12-22 2004-03-16 G.B. Boucherie, N.V. Procedimiento de fijacion de mechones de cerdas para cepillos en soportes de material termoplastico.
DE10259723A1 (de) * 2002-12-19 2004-07-01 Trisa Holding Ag Zahnbürste und Verfahren zu deren Herstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0972465A1 (fr) 1998-07-14 2000-01-19 Firma G.B. BOUCHERIE, naamloze vennootschap Procédé de fabrication de brosses et machine de fabrication de brosses pour l'application de ce procédé
EP0972464A1 (fr) 1998-07-14 2000-01-19 Firma G.B. BOUCHERIE, naamloze vennootschap Procédé de fabrication de brosses et machine de fabrication de brosses pour l'application de ce procédé
EP1136017B1 (fr) 2000-03-21 2003-06-25 G.B. Boucherie, N.V. Procédé et dispositif pour la fusion des extrêmités de poils

Also Published As

Publication number Publication date
EP1665951A3 (fr) 2009-10-28
DE202004016414U1 (de) 2005-02-24

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