EP1239752B1 - Method for producing brushes and device for implementing said method - Google Patents

Method for producing brushes and device for implementing said method Download PDF

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Publication number
EP1239752B1
EP1239752B1 EP99964664A EP99964664A EP1239752B1 EP 1239752 B1 EP1239752 B1 EP 1239752B1 EP 99964664 A EP99964664 A EP 99964664A EP 99964664 A EP99964664 A EP 99964664A EP 1239752 B1 EP1239752 B1 EP 1239752B1
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EP
European Patent Office
Prior art keywords
flexible cleaning
cleaning element
bristle filaments
brush body
bristle
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 - Lifetime
Application number
EP99964664A
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German (de)
French (fr)
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EP1239752A1 (en
Inventor
Andreas Lanvers
Erwin Buchholz
Armin Seifert
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M&C Schiffer GmbH
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M&C Schiffer GmbH
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Publication date
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Publication of EP1239752A1 publication Critical patent/EP1239752A1/en
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Publication of EP1239752B1 publication Critical patent/EP1239752B1/en
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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D9/00—Machines for finishing brushes
    • A46D9/02—Cutting; Trimming

Definitions

  • the present invention relates to a method for producing brushes, in particular Toothbrushes in which a brush body is formed by injection molding in a mold cavity is, bristle filaments connected to form a bristle with the brush body and at least one is essentially parallel to the bristle filaments extending soft-elastic cleaning element, preferably by injection is formed on the brush body.
  • the brush In addition to the conventional bristle filaments, which usually form bundles of bristles are held together in the brush body, the brush also has Cleaning elements, preferably made of a thermoplastic elastomer.
  • the Cleaning elements are not only used to clean the teeth and the neighboring one Gums, but also the massage of the gums. Also improve the cleaning elements the application of dentifrices.
  • One after the generic Process manufactured and designed as a toothbrush is for example known from WO 96/15696.
  • Such a brush has so far not been able to assert itself since it is not the actual one Requirements are sufficient.
  • the user regularly brushes over expected the entire brush head.
  • the flexible cleaning elements should have a contour, i.e. a history of usage Ends that extend from the course of the bristle surface of the brush, i.e. of that area the brush body, which of the bristle filaments and / or the soft elastic Cleaning elements protrudes, differs.
  • the previously known method is relatively complex. So at first a recessed brush body made by injection molding and Bristle filaments after removal of the brush body with this through the recesses introduced brackets connected. After a possible post-processing of the ends of the bristle filaments on the use side, the brush body is once again in one Injection mold used and at least one flexible cleaning element molded onto the brush body by means of injection molding.
  • EP-0 458 999 discloses displacement plates that are individual to the geometry of the bristle field can be tailored to selectively individual bristle bundles to remove the bristle field from the sphere of action of the post-processing tool.
  • the expansion plates are partially axial Direction in relation to the longitudinal axis of the bristle bundle delivered to the user side Press the ends of the bristle bundles towards the brush body.
  • Embodiments are proposed in this prior art, with the Displacement plates from the area of influence of the post-processing tool removing bristle bundles at their ends on the usage side by the displacement tool to grasp and pull both outwards by an oblique movement as well as to deflect down towards the brush body.
  • the present invention is based on the object of the method for the production of brushes of the type mentioned in that brushes that a combination of flexible cleaning elements and bristle filaments have, without restriction of the bristle field geometry and / or the contour of the bristle can be produced, and a device suitable for carrying out the method to accomplish.
  • the present invention uses A method with the features of claim 1 or a method with the features proposed by claim 2.
  • the displacement of individual bristle filaments known from the prior art is also disadvantageous in that it cannot be reliably guaranteed that predetermined Bristle filaments or groups of bristle filaments, i.e. Bristle bundle in be processed in a defined manner, while other bristle filaments from the Processing area of the post-processing tool can be kept away.
  • This The first alternative of the proposed solution according to the invention becomes disadvantageous thereby safely avoided that the at least one flexible cleaning element is compressed by wires fed in the axial direction and that the user side The ends of the bristle filaments are guided past the supplied wires become.
  • the wires hitting the bristle filaments in a line almost have a negligible width, so that the bristle filaments push past the wires are, whereas the flexible cleaning element, especially at an elongated extension of the same, from which at least one wire is gripped and is pressed towards the brush body.
  • the preferred embodiment of the method according to the invention in which at least a wire, preferably several wires and particularly preferably a wire grid in the axial Direction of the bristle filaments is fed to the brush body and that or the flexible cleaning elements in the axial direction of the bristle filaments are compressed, is preferably developed such that the bristle filaments are supported on the wires during post-processing.
  • the above the Bristle surface arranged wires reduce the free bending length of the to be machined Bristle filaments and thus improve post-processing of their usage side Ends in a predetermined manner. An uncontrolled bending of the bristle filaments is particularly prevented when using a close-meshed wire mesh.
  • the soft elastic Cleaning element for removal from the sphere of activity of the Post-processing device gripped at its free end.
  • the state of the art Technology known displacement of individual bristle filaments can not with the required Accuracy. Individual bristle filaments to be displaced remain in the bristle field and are subjected to post-processing in an undesirable manner, whereas other bristle filaments to be processed from the effective range of the post-processing tool can be removed.
  • the flexible cleaning element is at least partially circumferential is enclosed.
  • gripping elements can be used that can be actuated Have grip areas. The procedure is particularly easy then constructively realize when an agent is delivered to the brush body which is at least one encompassing the flexible cleaning element Has gripping opening. The flexible element is caught in this gripping opening and laterally deflected by actuating the deliverable means. hereby it is safely prevented that bristle filaments to be reworked out of the effective range of the post-processing tool are accidentally removed.
  • FIG. 1 shows a brush 1, which in the exemplary embodiment shown is a toothbrush is formed and the brush head 2 in a schematically illustrated clamping device 3 is held.
  • the brush 1 at a transition between the brush head 2 and a neck area 4 by conical and against the Side surfaces and the top of the brush 1 adjacent pins 5 clamped and centered.
  • the toothbrush 1 is clamped in this Position with its underside on the clamping device.
  • the brush head 3 is also overlapped by the clamping device.
  • One in the FIGS. 2 and 3 include the post-processing tool in the exemplary embodiment shown a grinding roller 6 which is driven in rotation.
  • a frame 7 Between the brush head 2 and the grinding roller 6 is a frame 7, which is in the range of Brush head 2 is recessed.
  • This frame 7 is together with the grinding roller 6 supporting fork 8 height adjustable, essentially in the longitudinal direction of bristle filaments 9 formed on the brush head 2.
  • the clamped brush 1 has not only bristle filaments 9 on its brush head 2, but also a soft elastic extending essentially in the longitudinal direction of the brush Cleaning element 12 on.
  • This flexible cleaning element 12 is in the embodiment shown essentially as in the transverse direction in the middle of the brush head 2 standing wall.
  • post-processing is carried out by means of Injection molded brush.
  • the manufacturing process as such is for example known from DE 845 933, in addition to those in the form of bristle bundles summarized bristle filaments on the brush head 2 the soft elastic Cleaning element 12 are formed, as is for example from WO 96/15696 or US 5,628,082 is known. This is done in a separate injection molding step preferably thermoplastic elastomer by means of extrusion coating on the brush head 2 integrally formed.
  • the brush thus produced is in the last processing station shown in Figures 1 to 3 post-processed, i.e. the ends of the bristle bundles on the usage side rounded by grinding.
  • the grinding roller 6 together with the Frame 7 lowered.
  • the recess 11 of the frame 7. The individual filaments 9 slide past the wires 10, whereas the flexible cleaning element 12 in the direction of the bristle area the brush head 2 is pressed.
  • the Sanding roller 6 together with the frame 7 finally acts on the sanding roller 6 Use ends of the bristle filaments 9 and rounds them off. In doing so the bristle filaments 9 taken in the direction of rotation of the grinding roller 6 and against Curved wires 10, which hold the bristle filaments 9 due to their tension such an excessive retraction of the bristle filaments 9 before grinding prevent.
  • the invention is not restricted to this exemplary embodiment.
  • the arrangement of the wires spanning frame 7 are at the discretion of the person skilled in the art.
  • the wires should preferably be approximately at right angles to elongated soft-elastic cleaning elements run.
  • the arrangement, the density, is determined accordingly and the distribution of the wires according to the design of the soft or elastic Cleaning elements.
  • Also can be made of wires running at right angles to each other formed grid may be provided, which is arranged in the recess 11. By a close-meshed grid can support the bristle filaments during post-processing be improved.
  • FIGS. 4 to 7 show a further embodiment of a post-processing station shown.
  • This embodiment has one to that shown in Figures 1 to 3 Embodiment identical clamping device.
  • a displacement plate 22 is provided to the side surface of the brush head 2, which is shown in Fig. 4 in its starting position.
  • This displacement plate 22 forms a means with which arranged at the edge of the brush head 2 is essentially rod-shaped molded soft-elastic cleaning elements 23 from the effective range of a Post-processing tool, here a tool for grinding the Use ends of the bristle filaments can be removed.
  • the flexible cleaning elements 23 provided only on the outside of the brush head 2.
  • the soft elastic Cleaning elements 23 together with bundles of bristles 24 that alternate to the flexible cleaning elements 23 are provided, the side Edge of the bristle surface formed on the brush head 2.
  • the displacement plate 22 has teeth 25 at its end facing the brush head 2 which extend parallel to the longitudinal extent of the displacement plate 22. Between A slot 26 is recessed in each case adjacent teeth 25. The teeth are 25 limited by displacer cheeks 27, which are substantially perpendicular to the plane the displacement plate 22 extend. In a cross-sectional view, the Teeth from the bottom of an H or U-shaped profile, the legs of which through Displacement cheeks 27 are formed (see FIG. 5).
  • the teeth 25 each have a gripping opening 28 at a predetermined location. at In the exemplary embodiment shown, each gripping opening 28 is oval.
  • the teeth 15 are arranged in different levels and resemble the different positions the ends of the flexible cleaning elements 23 due to different lengths the same.
  • the displacement plates 22 are based on those penetrated by the bristle bundles 24 Bursting surface of the brush head 2 can be moved obliquely (see FIG. 5). From the in Fig. 4 starting position shown, the mutual displacement plates 22 on the Brush head 2 towards and towards the ends of the bristle bundles 24 in the direction of use of arrow F in Fig. 5 delivered. This infeed movement takes place at an angle to the longitudinal axis of the bristle filaments. During this infeed movement, the individual the teeth 25 surrounding displacement cheeks 27 the bristle filaments of the soft elastic cleaning elements 23 adjacent bristle bundle 24 in the slots 26.
  • the usage-side ends of the flexible cleaning elements 23 slide first with a progressive feed movement of the displacement plate 22 on the The underside of the teeth 25 facing the brush head 2. This state is shown in FIG. 5 shown. As the feed plate 22 progresses, spring finally the cleaning elements 23 into the oval gripping openings 28.
  • the displacement plate After only the flexible cleaning elements 23 with their upper free end have been caught in the oval gripping openings 28, the displacement plate retracted towards their home position.
  • the soft elastic Cleaning elements 23 at least partially circumferentially at the gripping openings 28 and are gripped in a simple manner by the displacement plate 22.
  • flexible cleaning elements 23 bent outwards about their longitudinal axis until the processing position shown in FIG. 7 has been reached.
  • the brush-side ends of the teeth 25 are flattened and tapered and accordingly have one is essentially parallel to the bristle surface, i.e. perpendicular to the filaments extending top. This upper side is in the processing position shown in FIG. 6 essentially in one plane with the bristle surface of the brush head Second

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  • Brushes (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Bürsten, insbesondere Zahnbürsten bei dem ein Bürstenkörper mittels Spritzgießen in einem Formnest gebildet wird, Borstenfilamente zur Ausbildung einer Beborstung mit dem Bürstenkörper verbunden werden und zumindest ein sich im wesentlichen parallel zu den Borstenfilamenten erstreckendes weichelastisches Reinigungselement vorzugsweise durch Anspritzen an dem Bürstenkörper ausgebildet wird.The present invention relates to a method for producing brushes, in particular Toothbrushes in which a brush body is formed by injection molding in a mold cavity is, bristle filaments connected to form a bristle with the brush body and at least one is essentially parallel to the bristle filaments extending soft-elastic cleaning element, preferably by injection is formed on the brush body.

Ein derartiges gattungsbildendes Verfahren ist beispielsweise aus der US 5,628,082 bekannt. Neben den herkömmlichen Borstenfilamenten, die üblicherweise zu Borstenbündeln zusammengefasst in dem Bürstenkörper gehalten sind, weist die Bürste zusätzlich Reinigungselemente, vorzugsweise aus einem thermoplastischen Elastomer auf. Die Reinigungselemente dienen nicht nur der Reinigung der Zähne und des benachbarten Zahnfleisches, sondern auch der Massage des Zahnfleisches. Auch verbessern die Reinigungselemente das Auftragen von Zahnreinigungsmitteln. Eine nach dem gattungsbildenden Verfahren hergestellte und als Zahnbürste ausgebildete Bürste ist beispielsweise aus der WO 96/15696 bekannt. Bei dieser vorbekannten Bürste sind definierte Bereiche für weichelastische Reinigungselemente einerseits und für Borstenbündel andererseits in Längsrichtung der Zahnbürste hintereinander vorgesehen. Die nutzungsseitigen Enden der Borstenbündel liegen bei der vorbekannten Bürste sämtlich in einer Ebene.Such a generic method is known for example from US 5,628,082. In addition to the conventional bristle filaments, which usually form bundles of bristles are held together in the brush body, the brush also has Cleaning elements, preferably made of a thermoplastic elastomer. The Cleaning elements are not only used to clean the teeth and the neighboring one Gums, but also the massage of the gums. Also improve the cleaning elements the application of dentifrices. One after the generic Process manufactured and designed as a toothbrush is for example known from WO 96/15696. There are defined areas in this known brush for flexible cleaning elements on the one hand and for bristle bundles on the other Longitudinal direction of the toothbrush is provided one behind the other. The usage ends the bristle bundle in the known brush is all in one plane.

Eine derartige Bürste konnte sich bis heute nicht durchsetzen, da sie nicht den tatsächlichen Anforderungen genügt. Regelmäßig wird von dem Benutzer eine Beborstung über den gesamten Bürstenkopf erwartet. Auch sollen nicht nur die weichelastischen Reinigungselemente eine Konturierung aufweisen, d.h. einen Verlauf der nutzungsseitigen Enden, der sich von dem Verlauf der Beborstungsfläche der Bürste, d.h. derjenigen Fläche des Bürstenkörpers, welcher von den Borstenfilamenten und/oder den weichelastischen Reinigungselementen durchragt ist, unterscheidet.Such a brush has so far not been able to assert itself since it is not the actual one Requirements are sufficient. The user regularly brushes over expected the entire brush head. Also not only the flexible cleaning elements should have a contour, i.e. a history of usage Ends that extend from the course of the bristle surface of the brush, i.e. of that area the brush body, which of the bristle filaments and / or the soft elastic Cleaning elements protrudes, differs.

Im übrigen ist das vorbekannte Verfahren verhältnismäßig aufwendig. So wird zunächst ein Ausnehmungen aufweisender Bürstenkörper mittels Spritzgießen hergestellt und Borstenfilamente nach Entnahme des Bürstenkörpers mit diesem durch in die Ausnehmungen eingebrachte Klammern verbunden. Nach einer eventuellen Nachbearbeitung der nutzungsseitigen Enden der Borstenfilamente wird der Bürstenkörper emeut in ein Spritzgießwerkzeug eingesetzt und zumindest ein weichelastisches Reinigungselement an dem Bürstenkörper mittels Umspritzen angeformt.Otherwise, the previously known method is relatively complex. So at first a recessed brush body made by injection molding and Bristle filaments after removal of the brush body with this through the recesses introduced brackets connected. After a possible post-processing of the ends of the bristle filaments on the use side, the brush body is once again in one Injection mold used and at least one flexible cleaning element molded onto the brush body by means of injection molding.

In der Bürstentechnik ist es bekannt, Teilbereiche eines Borstenfeldes vor der Nachbearbeitung umzulenken, um diese Teilbereiche des Borstenfeldes aus dem Wirkbereich eines Nachbearbeitungswerkzeuges zu entfernen. So offenbart die DE 197 28 493 A eine Lochplatte, die von dem zu bearbeitenden Teil des Borstenfeldes durchragt wird, jedoch andere, aus dem Wirkbereich des Nachbearbeitungswerkzeuges zu entfernende Borstenbündel seitlich verdrängt. Die Lochplatte wird bei diesem Stand der Technik im Wesentlichen in axialer Richtung bezogen auf die Längserstreckung der Borstenbündel zugestellt. Die EP-0 458 999 offenbart Verdrängerplatten, die individuell auf die Geometrie des Borstenfeldes zugeschnitten sein können, um selektiv einzelne Borstenbündel des Borstenfeldes aus dem Wirkungsbereich des Nachbearbeitungswerkzeuges zu entfernen. Die Verdängerplatten werden bei diesem Stand der Technik teilweise in axialer Richtung bezogen auf die Längsachse der Borstenbündel zugestellt, um die nutzungsseitigen Enden der Borstenbündel in Richtung auf den Bürstenkörper zu drücken. Bei alternativen Ausführungsformen wird in diesem Stand der Technik vorgeschlagen, mit den Verdrängerplatten die aus dem Wirkungsbereich des Nachbearbeitungswerkzeuges zu entfernenden Borstenbündel an ihren nutzungsseitigen Enden durch das Verdrängerwerkzeug zu fassen und durch eine schräge Bewegung sowohl nach außen zu ziehen als auch nach unten in Richtung auf den Bürstenkörper umzulenken.In brush technology, it is known to sub-areas of a bristle field before post-processing to redirect these partial areas of the bristle field out of the effective area a post-processing tool. For example, DE 197 28 493 A discloses a perforated plate which is penetrated by the part of the bristle field to be processed, however, others to be removed from the effective range of the post-processing tool Bristle bundle displaced laterally. The perforated plate is in this state of the art in Essentially in the axial direction related to the longitudinal extent of the bristle bundle delivered. EP-0 458 999 discloses displacement plates that are individual to the geometry of the bristle field can be tailored to selectively individual bristle bundles to remove the bristle field from the sphere of action of the post-processing tool. In this prior art, the expansion plates are partially axial Direction in relation to the longitudinal axis of the bristle bundle delivered to the user side Press the ends of the bristle bundles towards the brush body. With alternatives Embodiments are proposed in this prior art, with the Displacement plates from the area of influence of the post-processing tool removing bristle bundles at their ends on the usage side by the displacement tool to grasp and pull both outwards by an oblique movement as well as to deflect down towards the brush body.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, das Verfahren zur Herstellung von Bürsten der eingangs genannten Art dahingehend weiterzubilden, dass Bürsten, die eine Kombination aus weichelastischen Reinigungselementen und Borstenfilamenten aufweisen, ohne Beschränkung der Borstenfeldgeometrie und/oder der Kontur der Beborstung herstellbar sind, sowie eine zur Durchführung des Verfahrens geeignete Vorrichtung zu schaffen.The present invention is based on the object of the method for the production of brushes of the type mentioned in that brushes that a combination of flexible cleaning elements and bristle filaments have, without restriction of the bristle field geometry and / or the contour of the bristle can be produced, and a device suitable for carrying out the method to accomplish.

Zur Lösung des verfahrensmäßigen Problems wird mit der vorliegenden Erfindung ein Verfahren mit den Merkmalen von Anspruch 1 oder ein Verfahren mit den Merkmalen von Anspruch 2 vorgeschlagen. To solve the procedural problem, the present invention uses A method with the features of claim 1 or a method with the features proposed by claim 2.

Das aus dem Stand der Technik bekannte Verdrängen einzelner Borstenfilamente ist auch insofern nachteilig, als nicht zuverlässig gewährleistet werden kann, dass vorbestimmte Borstenfilamente oder Gruppen von Borstenfilamenten, d.h. Borstenbündel in definierter Weise nachbearbeitet werden, während andere Borstenfilamente aus dem Bearbeitungsbereich des Nachbearbeitungswerkzeuges ferngehalten werden. Dieser Nachteil wird bei der ersten Alternative des erfindungsgemäßen Lösungsvorschlages dadurch sicher vermieden, dass das zumindest eine weichelastische Reinigungselement durch in axialer Richtung zugestellte Drähte zusammengedrückt wird und dass die nutzungsseitigen Enden der Borstenfilamente an den zugestellten Drähten vorbeigeführt werden. Die linienförmig auf die Borstenfilamente auftreffenden Drähte haben eine nahezu zu vernachlässigende Breite, so dass die Borstenfilamente an den Drähten vorbeigedrückt werden, wohingegen das weichelastische Reinigungselement, insbesondere bei einer länglichen Erstreckung desselben, von dem mindestens einen Draht erfasst und auf den Bürstenkörper zu gedrückt wird.The displacement of individual bristle filaments known from the prior art is also disadvantageous in that it cannot be reliably guaranteed that predetermined Bristle filaments or groups of bristle filaments, i.e. Bristle bundle in be processed in a defined manner, while other bristle filaments from the Processing area of the post-processing tool can be kept away. This The first alternative of the proposed solution according to the invention becomes disadvantageous thereby safely avoided that the at least one flexible cleaning element is compressed by wires fed in the axial direction and that the user side The ends of the bristle filaments are guided past the supplied wires become. The wires hitting the bristle filaments in a line almost have a negligible width, so that the bristle filaments push past the wires are, whereas the flexible cleaning element, especially at an elongated extension of the same, from which at least one wire is gripped and is pressed towards the brush body.

Die bevorzugte Ausgestaltung des erfindungsgemäßen Verfahrens, bei der zumindest ein Draht, vorzugsweise mehrere Drähte und besonders bevorzugt ein Drahtgitter in axialer Richtung der Borstenfilamente auf den Bürstenkörper zu zugestellt wird und das oder die weichelastischen Reinigungselemente in axialer Richtung der Borstenfilamente zusammengedrückt werden, wird vorzugsweise derart weitergebildet, dass die Borstenfilamente sich während der Nachbearbeitung an den Drähten abstützen. Die oberhalb der Beborstungsfläche angeordneten Drähte verringern die freie Biegelänge der zu bearbeitenden Borstenfilamente und verbessern somit eine Nachbearbeitung ihrer nutzungsseitigen Enden in vorbestimmter Weise. Ein unkontrolliertes Verbiegen der Borstenfilamente wird insbesondere bei Verwendung eines engmaschigen Drahtgitters unterbunden. The preferred embodiment of the method according to the invention, in which at least a wire, preferably several wires and particularly preferably a wire grid in the axial Direction of the bristle filaments is fed to the brush body and that or the flexible cleaning elements in the axial direction of the bristle filaments are compressed, is preferably developed such that the bristle filaments are supported on the wires during post-processing. The above the Bristle surface arranged wires reduce the free bending length of the to be machined Bristle filaments and thus improve post-processing of their usage side Ends in a predetermined manner. An uncontrolled bending of the bristle filaments is particularly prevented when using a close-meshed wire mesh.

Bei der zweiten Alternative des erfindungsgemäßen Lösungsvorschlages wird das weichelastische Reinigungselement zum Entfernen aus dem Wirkungsbereich des Nachbearbeitungsgerätes an seinem freien Ende umgriffen. Das aus dem Stand der Technik bekannte Verdrängen einzelner Borstenfilamente kann nicht mit der geforderten Genauigkeit durchgeführt werden. Einzelne zu verdrängende Borstenfilamente verbleiben in dem Borstenfeld und werden einer Nachbearbeitung in unerwünschter Weise unterzogen, wohingegen andere zu bearbeitende Borstenfilamente aus dem Wirkungsbereich des Nachbearbeitungswerkzeuges entfernt werden.In the second alternative of the proposed solution according to the invention, the soft elastic Cleaning element for removal from the sphere of activity of the Post-processing device gripped at its free end. The state of the art Technology known displacement of individual bristle filaments can not with the required Accuracy. Individual bristle filaments to be displaced remain in the bristle field and are subjected to post-processing in an undesirable manner, whereas other bristle filaments to be processed from the effective range of the post-processing tool can be removed.

Bei der bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens werden das/die weichelastischen Reinigungselemente zumindest teilweise definiert gegriffen. Dies bedeutet, dass das weichelastische Reinigungselement zumindest teilweise umfänglich umschlossen wird. Hierzu können Greifelemente verwendet werden, die betätigbare Griffflächen haben. Besonders einfach lässt sich die Verfahrensführung dann konstruktiv verwirklichen, wenn ein Mittel auf den Bürstenkörper zugestellt wird, welches mindestens eine das weichelastische Reinigungselement umgreifende Greiföffnung aufweist. In dieser Greiföffnung wird das weichelastische Element gefangen und durch Betätigen des zustellbaren Mittels seitlich ausgelenkt. Hierdurch wird sicher verhindert, dass nachzubearbeitende Borstenfilamente aus dem Wirkungsbereich des Nachbearbeitungswerkzeuges versehentlich entfernt werden.In the preferred embodiment of the method according to the invention, the soft-elastic cleaning elements gripped at least partially defined. This means, that the flexible cleaning element is at least partially circumferential is enclosed. For this, gripping elements can be used that can be actuated Have grip areas. The procedure is particularly easy then constructively realize when an agent is delivered to the brush body which is at least one encompassing the flexible cleaning element Has gripping opening. The flexible element is caught in this gripping opening and laterally deflected by actuating the deliverable means. hereby it is safely prevented that bristle filaments to be reworked out of the effective range of the post-processing tool are accidentally removed.

Bevorzugte Weiterbildungen des erfindungsgemäßen Verfahrens sind in den Unteransprüchen 3 bis 5 angegeben. Preferred developments of the method according to the invention are in the subclaims 3 to 5 specified.

Zur Lösung des vorrichtungsmäßigen Aspekts der vorliegenden Erfindung wird eine Vorrichtung mit den Merkmalen der Ansprüche 6 bzw. 7 angegeben. Bevorzugte Weiterbildungen sind in den abhängigen Vorrichtungsansprüchen 8 bis 14 angegeben.To solve the device aspect of the present invention, a device with the features of claims 6 and 7 respectively. Preferred further training are specified in dependent device claims 8 to 14.

Die vorliegende Erfindung wird nachfolgend anhand von mehreren Ausführungsbeispielen in Verbindung mit der Zeichnung näher beschrieben. In dieser zeigen:

Fig. 1
eine schematische Draufsicht auf ein erstes Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung;
Fig.2
eine Seitenansicht des in Fig. 1 gezeigten Ausführungsbeipiels in einer ersten Position des Nachbearbeitungswerkzeuges;
Fig.3
die in Fig. 2 gezeigte Seitenansicht in einer zweiten Position des Nachbearbeitungswerkzeuges;
Fig. 4
eine schematische Draufsicht auf ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung in einer ersten Position;
Fig. 5
eine Schnittansicht entlang der Linie V-V gemäß der Darstellung in Figur 4;
Fig. 6
das in Fig. 4 gezeigte Ausführungsbeispiel in einer zweiten Position und
Fig. 7
das in den Figuren 4 und 6 gezeigte Ausführungsbeispiel in einer dritten Position.
The present invention is described in more detail below using several exemplary embodiments in conjunction with the drawing. In this show:
Fig. 1
a schematic plan view of a first embodiment of a device according to the invention;
Fig.2
a side view of the embodiment shown in Figure 1 in a first position of the post-processing tool.
Figure 3
the side view shown in Figure 2 in a second position of the post-processing tool.
Fig. 4
a schematic plan view of another embodiment of the device according to the invention in a first position;
Fig. 5
a sectional view taken along line VV as shown in Figure 4;
Fig. 6
the embodiment shown in Fig. 4 in a second position and
Fig. 7
the embodiment shown in Figures 4 and 6 in a third position.

Die Figur 1 zeigt eine Bürste 1, die bei dem gezeigten Ausführungsbeispiel als Zahnbürste ausgebildet ist und deren Bürstenkopf 2 in einer schematisch dargestellten Spanneinrichtung 3 gehalten ist. Hierzu wird die Bürste 1 an einem Übergang zwischen dem Bürstenkopf 2 und einem Halsbereich 4 durch konisch ausgebildete und gegen die Seitenflächen und die Oberseite der Bürste 1 anliegende Stifte 5 geklemmt und zentriert.FIG. 1 shows a brush 1, which in the exemplary embodiment shown is a toothbrush is formed and the brush head 2 in a schematically illustrated clamping device 3 is held. For this purpose, the brush 1 at a transition between the brush head 2 and a neck area 4 by conical and against the Side surfaces and the top of the brush 1 adjacent pins 5 clamped and centered.

Wie den Figuren 2 und 3 zu entnehmen ist, liegt die Zahnbürste 1 in dieser geklemmten Stellung mit ihrer Unterseite an der Einspanneinrichtung an. An seinem vorderen Ende ist der Bürstenkopf 3 darüber hinaus von der Einspanneinrichtung übergriffen. Ein in den Figuren 2 und 3 gezeigtes Nachbearbeitungswerkzeug umfasst bei dem gezeigten Ausführungsbeispiel eine Schleifrolle 6, die rotierend angetrieben ist. Zwischen dem Bürstenkopf 2 und der Schleifrolle 6 befindet sich ein Rahmen 7, der in dem Bereich des Bürstenkopfes 2 ausgespart ist. Dieser Rahmen 7 ist zusammen mit einer die Schleifrolle 6 tragenden Gabel 8 höhenverstellbar gelagert, und zwar im wesentlichen in Längsrichtung von an dem Bürstenkopf 2 ausgebildeten Borstenfilamenten 9.As can be seen from Figures 2 and 3, the toothbrush 1 is clamped in this Position with its underside on the clamping device. At its front end the brush head 3 is also overlapped by the clamping device. One in the FIGS. 2 and 3 include the post-processing tool in the exemplary embodiment shown a grinding roller 6 which is driven in rotation. Between the brush head 2 and the grinding roller 6 is a frame 7, which is in the range of Brush head 2 is recessed. This frame 7 is together with the grinding roller 6 supporting fork 8 height adjustable, essentially in the longitudinal direction of bristle filaments 9 formed on the brush head 2.

Wie der Figur 1 zu entnehmen ist, erstrecken sich von parallelen Längsseiten des Rahmens 7 Drähte 10 über die von dem Rahmen 7 umgebene Ausnehmung 11. Bei dem gezeigten Ausführungsbeispiel sind die Drähte 10 quer zur Längserstreckung der Bürste 1 gespannt.As can be seen in Figure 1, extend from parallel longitudinal sides of the frame 7 wires 10 over the recess 11 surrounded by the frame 11. In the In the embodiment shown, the wires 10 are transverse to the longitudinal extension of the brush 1 excited.

Die eingespannte Bürste 1 weist an ihrem Bürstenkopf 2 nicht nur Borstenfilamente 9, sondem auch ein sich im wesentlichen in Längsrichtung der Bürste erstreckendes weichelastisches Reinigungselement 12 auf. Dieses weichelastische Reinigungselement 12 ist bei dem gezeigten Ausführungsbeispiel im wesentlichen als in Querrichtung in der Mitte des Bürstenkopfes 2 aufstehende Wand ausgebildet.The clamped brush 1 has not only bristle filaments 9 on its brush head 2, but also a soft elastic extending essentially in the longitudinal direction of the brush Cleaning element 12 on. This flexible cleaning element 12 is in the embodiment shown essentially as in the transverse direction in the middle of the brush head 2 standing wall.

An der in den Figuren 1 bis 3 gezeigten Station erfolgt die Nachbearbeitung einer mittels Spritzgießen hergestellten Bürste. Das Herstellungsverfahren als solches ist beispielsweise aus der DE 845 933 bekannt, wobei zusätzlich zu den in Form von Borstenbündeln zusammengefassten Borstenfilamenten an dem Bürstenkopf 2 das weichelastische Reinigungselement 12 ausgeformt werden, wie dies beispielsweise aus der WO 96/15696 oder der US 5,628,082 bekannt ist. Hierzu wird in einem separaten Spritzgussschritt vorzugsweise thermoplastisches Elastomer mittels Umspritzen an dem Bürstenkopf 2 stoffschlüssig angeformt. At the station shown in FIGS. 1 to 3, post-processing is carried out by means of Injection molded brush. The manufacturing process as such is for example known from DE 845 933, in addition to those in the form of bristle bundles summarized bristle filaments on the brush head 2 the soft elastic Cleaning element 12 are formed, as is for example from WO 96/15696 or US 5,628,082 is known. This is done in a separate injection molding step preferably thermoplastic elastomer by means of extrusion coating on the brush head 2 integrally formed.

Die derart hergestellte Bürste wird in der letzten in den Figuren 1 bis 3 gezeigten Verarbeitungsstation nachbearbeitet, d.h. die nutzungsseitigen Enden der Borstenbündel werden durch Beschleifen verrundet. Zunächst wird die Schleifrolle 6 zusammen mit dem Rahmen 7 abgesenkt. Beim Absenken der Schleifrolle 6 in Richtung auf die Borstenfilamente 9 durchtritt die an der Beborstungsfläche des Bürstenkopfes 2 vorgesehene Beborstung sowie das weichelastische Reinigungselement die Ausnehmung 11 des Rahmens 7. Dabei schieben sich die einzelnen Filamente 9 an den Drähten 10 vorbei, wohingegen das weichelastische Reinigungselement 12 in Richtung auf die Beborstungsfläche des Bürstenkopfes 2 gedrückt wird. Bei einer fortschreitenden Absenkbewegung der Schleifrolle 6 zusammen mit dem Rahmen 7 wirkt schließlich die Schleifrolle 6 auf die nutzungsseitigen Enden der Borstenfilamente 9 ein und rundet diese ab. Dabei werden die Borstenfilamente 9 in Drehrichtung der Schleifrolle 6 mitgenommen und gegen die Drähte 10 gebogen, welche aufgrund ihrer Spannung die Borstenfilamente 9 halten und so ein übermäßiges Zurückweichen der Borstenfilamente 9 vor der Schleifbearbeitung verhindern.The brush thus produced is in the last processing station shown in Figures 1 to 3 post-processed, i.e. the ends of the bristle bundles on the usage side rounded by grinding. First, the grinding roller 6 together with the Frame 7 lowered. When lowering the grinding roller 6 in the direction of the bristle filaments 9 passes through the bristle provided on the bristle surface of the brush head 2 and the flexible cleaning element, the recess 11 of the frame 7. The individual filaments 9 slide past the wires 10, whereas the flexible cleaning element 12 in the direction of the bristle area the brush head 2 is pressed. With a progressive lowering movement of the Sanding roller 6 together with the frame 7 finally acts on the sanding roller 6 Use ends of the bristle filaments 9 and rounds them off. In doing so the bristle filaments 9 taken in the direction of rotation of the grinding roller 6 and against Curved wires 10, which hold the bristle filaments 9 due to their tension such an excessive retraction of the bristle filaments 9 before grinding prevent.

Nach Beendigung der Schleifbearbeitung wird die Schleifrolle 6 zusammen mit dem Rahmen 7 angehoben. Die im Anschluss an die Nachbearbeitung nunmehr fertiggestellte Bürste 1 kann entnommen und verpackt werden.After finishing grinding, the grinding roller 6 together with the Frame 7 raised. The one now completed after the post-processing Brush 1 can be removed and packed.

Die Erfindung ist nicht auf dieses Ausführungsbeispiel beschränkt. Die Anordnung der den Rahmen 7 überspannenden Drähte steht im Belieben des Fachmannes. Die Drähte sollten vorzugsweise etwa rechtwinklig zu länglich ausgebildeten weichelastischen Reinigungselementen verlaufen. Dementsprechend richtet sich die Anordnung, die Dichte und die Verteilung der Drähte nach der Ausgestaltung des oder der weichelastischen Reinigungselemente. Auch kann ein aus rechtwinklig zueinander verlaufenden Drähten gebildetes Gitter vorgesehen sein, welches in der Ausnehmung 11 angeordnet ist. Durch ein engmaschiges Gitter kann die Stützung der Borstenfilamente bei der Nachbearbeitung verbessert werden.The invention is not restricted to this exemplary embodiment. The arrangement of the wires spanning frame 7 are at the discretion of the person skilled in the art. The wires should preferably be approximately at right angles to elongated soft-elastic cleaning elements run. The arrangement, the density, is determined accordingly and the distribution of the wires according to the design of the soft or elastic Cleaning elements. Also can be made of wires running at right angles to each other formed grid may be provided, which is arranged in the recess 11. By a close-meshed grid can support the bristle filaments during post-processing be improved.

In den Figuren 4 bis 7 ist ein weiteres Ausführungsbeispiel einer Nachbearbeitungsstation gezeigt. Dieses Ausführungsbeispiel weist eine zu dem in den Figuren 1 bis 3 gezeigten Ausführungsbeispiel identische Spanneinrichtung auf. Im wesentlichen parallel zu der Seitenfläche des Bürstenkopfes 2 ist jeweils eine Verdrängerplatte 22 vorgesehen, die in Fig. 4 in ihrer Ausgangsposition gezeigt ist. Diese Verdrängerplatte 22 bildet ein Mittel, mit dem am Rand des Bürstenkopfes 2 angeordnete im wesentlichen stabförmig ausgeformte weichelastische Reinigungselemente 23 aus dem Wirkungsbereich eines Nachbearbeitungswerkzeuges, hier eines Werkzeuges zur Schleifbearbeitung der nutzungsseitigen Enden der Borstenfilamente entfernt werden können.FIGS. 4 to 7 show a further embodiment of a post-processing station shown. This embodiment has one to that shown in Figures 1 to 3 Embodiment identical clamping device. Essentially parallel a displacement plate 22 is provided to the side surface of the brush head 2, which is shown in Fig. 4 in its starting position. This displacement plate 22 forms a means with which arranged at the edge of the brush head 2 is essentially rod-shaped molded soft-elastic cleaning elements 23 from the effective range of a Post-processing tool, here a tool for grinding the Use ends of the bristle filaments can be removed.

Bei der in den Figuren 4 bis 7 gezeigten Bürste sind die weichelastischen Reinigungselemente 23 ausschließlich außen an dem Bürstenkopf 2 vorgesehen. Die weichelastischen Reinigungselemente 23 begrenzen zusammen mit Borstenbündeln 24, die alternierend zu den weichelastischen Reinigungselementen 23 vorgesehen sind, den seitlichen Rand der an dem Bürstenkopf 2 ausgebildeten Beborstungsfläche.In the brush shown in Figures 4 to 7 are the flexible cleaning elements 23 provided only on the outside of the brush head 2. The soft elastic Cleaning elements 23 together with bundles of bristles 24 that alternate to the flexible cleaning elements 23 are provided, the side Edge of the bristle surface formed on the brush head 2.

Die Verdrängerplatte 22 weist an ihrem dem Bürstenkopf 2 zugewandten Ende Zähne 25 auf, die sich parallel zu der Längserstreckung der Verdrängerplatte 22 erstrecken. Zwischen benachbarten Zähne 25 ist jeweils ein Schlitz 26 ausgespart. Die Zähne 25 sind durch Verdrängerwangen 27 begrenzt, die sich im wesentlichen rechtwinklig zu der Ebene der Verdrängerplatte 22 erstrecken. In einer Querschnittsansicht bilden somit die Zähne den Grund eines H- oder U-förmigen Profiles aus, dessen Schenkel durch die Verdrängerwangen 27 gebildet sind (vgl. Fig. 5).The displacement plate 22 has teeth 25 at its end facing the brush head 2 which extend parallel to the longitudinal extent of the displacement plate 22. Between A slot 26 is recessed in each case adjacent teeth 25. The teeth are 25 limited by displacer cheeks 27, which are substantially perpendicular to the plane the displacement plate 22 extend. In a cross-sectional view, the Teeth from the bottom of an H or U-shaped profile, the legs of which through Displacement cheeks 27 are formed (see FIG. 5).

Die Zähne 25 weisen an einer vorbestimmten Stelle jeweils eine Greiföffnung 28 auf. Bei dem gezeigten Ausführungsbeispiel ist jede Greiföffnung 28 oval ausgeformt. Die Zähne 15 sind in unterschiedlichen Ebenen angeordnet und gleichen die unterschiedliche Lage der Enden der weichelastischen Reinigungselemente 23 aufgrund unterschiedlicher Länge derselben aus.The teeth 25 each have a gripping opening 28 at a predetermined location. at In the exemplary embodiment shown, each gripping opening 28 is oval. The teeth 15 are arranged in different levels and resemble the different positions the ends of the flexible cleaning elements 23 due to different lengths the same.

Die Verdrängerplatten 22 sind bezogen auf die von den Borstenbündeln 24 durchragten Beborstungsfläche des Bürstenkopfes 2 schräg verschieblich (vg. Fig. 5). Von der in Fig. 4 gezeigten Ausgangslage werden die beiderseitigen Verdrängerplatten 22 auf den Bürstenkopf 2 zu und zu den nutzungsseitigen Enden der Borstenbündel 24 hin in Richtung des Pfeiles F in Fig. 5 zugestellt. Diese Zustellbewegung erfolgt schräg bezogen auf die Längsachse der Borstenfilamente. Bei dieser Zustellbewegung drücken die einzelnen, die Zähne 25 umgebenden Verdrängerwangen 27 die Borstenfilamente der den weichelastischen Reinigungselementen 23 benachbarten Borstenbündel 24 in die Schlitze 26. Die nutzungsseitigen Enden der weichelastischen Reinigungselemente 23 gleiten zunächst bei einer fortschreitenden Zustellbewegung der Verdrängerplatte 22 an der dem Bürstenkopf 2 zugewandten Unterseite der Zähne 25. Dieser Zustand ist in Figur 5 gezeigt. Bei einer fortschreitenden Zustellbewegung der Verdrängerplatte 22 federn schließlich die Reinigungselemente 23 in die ovalen Greiföffnungen 28 ein.The displacement plates 22 are based on those penetrated by the bristle bundles 24 Bursting surface of the brush head 2 can be moved obliquely (see FIG. 5). From the in Fig. 4 starting position shown, the mutual displacement plates 22 on the Brush head 2 towards and towards the ends of the bristle bundles 24 in the direction of use of arrow F in Fig. 5 delivered. This infeed movement takes place at an angle to the longitudinal axis of the bristle filaments. During this infeed movement, the individual the teeth 25 surrounding displacement cheeks 27 the bristle filaments of the soft elastic cleaning elements 23 adjacent bristle bundle 24 in the slots 26. The usage-side ends of the flexible cleaning elements 23 slide first with a progressive feed movement of the displacement plate 22 on the The underside of the teeth 25 facing the brush head 2. This state is shown in FIG. 5 shown. As the feed plate 22 progresses, spring finally the cleaning elements 23 into the oval gripping openings 28.

Nachdem sämtliche am Rand angeordneten Borstenbündel 24 auf diese Weise seitlich in die Schlitze 26 verdrängt und der obere Bereich der weichelastischen Reinigungselemente 23 in den jeweiligen Greiföffnungen 28 aufgenommen ist, wird die Zustellbewegung der Verdrängerplatte 22 gestoppt. Diese Endstellung ist in Fig. 6 gezeigt.After all the bristle bundles 24 arranged on the edge in this way laterally in the slots 26 displaced and the upper area of the flexible cleaning elements 23 is received in the respective gripping openings 28, the feed movement the displacement plate 22 stopped. This end position is shown in Fig. 6.

Nachdem ausschließlich die weichelastischen Reinigungselemente 23 mit ihrem oberen freien Ende in den ovalen Greiföffnungen 28 eingefangen worden sind, wird die Verdrängerplatte in Richtung auf ihre Ausgangsstellung zurückgezogen. Dabei liegen die weichelastischen Reinigungselemente 23 zumindest teilweise umfänglich an den Greiföffnungen 28 an und sind derart auf einfache Weise von der Verdrängerplatte 22 gegriffen. Bei fortschreitender Bewegung der Verdrängerplatten 22 in ihre Ausgangslage werden die weichelastischen Reinigungselemente 23 um ihre Längsachse nach außen gebogen, bis die in Fig. 7 gezeigte Bearbeitungsstellung erreicht ist. In dieser Bearbeitungsstellung sind die weichelastischen Reinigungselemente 23 aus dem Wirkbereich eines nicht dargestellten Nachbearbeitungswerkzeuges entfernt. Die bürstenseitigen Enden der Zähne 25 sind abgeflacht und schräg zulaufend ausgebildet und weisen dementsprechend eine sich im wesentlichen parallel zu der Beborstungsfläche d.h. rechtwinkelig zu den Filamenten erstreckende Oberseite auf. Diese Oberseite liegt in der in Fig. 6 gezeigten Bearbeitungsstellung im wesentlichen in einer Ebene mit der Beborstungsfläche des Bürstenkopfes 2.After only the flexible cleaning elements 23 with their upper free end have been caught in the oval gripping openings 28, the displacement plate retracted towards their home position. Here are the soft elastic Cleaning elements 23 at least partially circumferentially at the gripping openings 28 and are gripped in a simple manner by the displacement plate 22. at progressive movement of the displacement plates 22 in their starting position flexible cleaning elements 23 bent outwards about their longitudinal axis until the processing position shown in FIG. 7 has been reached. In this processing position are the flexible cleaning elements 23 from the effective range of a not shown Post-processing tool removed. The brush-side ends of the teeth 25 are flattened and tapered and accordingly have one is essentially parallel to the bristle surface, i.e. perpendicular to the filaments extending top. This upper side is in the processing position shown in FIG. 6 essentially in one plane with the bristle surface of the brush head Second

Im Anschluss an die Schleifbearbeitung der nutzungsseitigen Enden der Borstenfilamente werden die Verdrängerplatten 22 weiter von dem Bürstenkopf 2 weg verschoben, bis schließlich die weichelastischen Reinigungselemente 23 aus den Greiföffnungen 28 herausfedern und sich aufgrund ihrer Elastizität in ihre Ausgangslage zurückstellen. Die fertig nachbearbeitete Bürste 1 kann jetzt entnommen und verpackt werden.Following the grinding of the ends of the bristle filaments on the usage side the displacement plates 22 are moved further away from the brush head 2, until finally the flexible cleaning elements 23 from the gripping openings 28 spring out and return to their starting position due to their elasticity. The Finished brush 1 can now be removed and packed.

Claims (14)

  1. A method for producing brushes, in particular toothbrushes, the brush body (2) of which carries bristle filaments (9) and at least one flexible cleaning element (12, 23), comprising the following steps:
    forming the brush body (2) by means of injection molding and connecting the bristle filaments (9) to the brush body (2), and
    forming the at least one flexible cleaning element (12, 23) by injection onto the brush body (2),
    characterized in that following the formation of the flexible cleaning elements (12, 23) the useful ends of the bristle filaments (9) are finished, the flexible cleaning element (12, 23) being removed from the operative area of the finishing tool (6) at least during the finishing operation in that the at least one flexible cleaning element (12, 23) is compressed by at least one wire (10) fed substantially in axial direction of the bristle filaments (9) to the brush body (2), and that the useful ends of the bristle filaments (9) are guided past the fed wire (10).
  2. The method for producing brushes, in particular toothbrushes, the brush body (2) of which carries bristle filaments (9) and at least one flexible cleaning element (12, 23), comprising the following steps:
    forming the brush body (2) by means of injection molding and connecting the bristle filaments (9) to the brush body (2), and
    forming the at least one flexible cleaning element (12, 23) by injection onto the brush body (2),
    characterized in that following the formation of the flexible cleaning elements (12, 23) the useful ends of the bristle filaments (9) are finished, the flexible cleaning element (12, 23) being removed from the operative area of the finishing tool (6) at least during the finishing operation in that the at least one flexible cleaning element (12, 23) is introduced into a continuous grip opening (28) and gripped around circumferentially at least in part by the wall of the grip opening (28) and bent by the movement of the grip opening (28) relative to the brush around the longitudinal axis thereof.
  3. The method according to claim 2, characterized in that a grip element which grips around the at least one flexible cleaning element (12, 23) and comprises the grip opening (28) is supplied obliquely relative to the bristle filaments (9), that at least one flexible cleaning element (12, 23) is gripped and removed from the operative area of the finishing tool (6).
  4. The method according to claim 3, characterized in that the movement of the grip element is continued for removing the flexible cleaning element (12, 23) following the finishing operation.
  5. The method according to claim 3 or 4, characterized in that the movement of the means is along a straight line.
  6. An apparatus for finishing brushes, comprising a finishing tool (6) acting on the useful end of bristle filaments (9) secured to a bristle body (2) of the brush, and a clamping device (3) for the brush body (2),
    characterized by
    a means (10; 25) which is assigned to the clamping device (3) and acts on at least one flexible cleaning element (12; 23) secured to the brush body (2) and which is movable relative to the clamping device (3), and which comprises a plurality of wires (10) pressing substantially at a right angle relative to the bristle filaments (9) onto the at least one flexible cleaning element (12).
  7. The apparatus for finishing brushes, comprising a finishing tool (6) acting on the useful end of bristle filaments (9) secured to a bristle body (2) of the brush, as well as a clamping device (3) for the brush body (2),
    characterized by
    a means (10; 25) which is assigned to the clamping device (3) and acts on at least one flexible cleaning element (12; 23) secured to the brush body (2) and which is movable relative to the clamping device (3) and is obliquely displaceable relative to the longitudinal axis of the bristle filaments, the means (22) comprising at least one continuous grip opening (28) assigned to the flexible cleaning element (23).
  8. The apparatus according to claim 7, characterized in that the means (10; 25) can be supplied together with the finishing tool (6) to the brush body (2).
  9. The apparatus according to claim 7 or 8, characterized in that a grip opening (28) is provided for each flexible cleaning element (23).
  10. The apparatus according to any one of claims 7 to 9, characterized in that the means comprises teeth (25) and that the grip openings (28) are provided on the teeth (25).
  11. The apparatus according to claim 10, characterized in that the teeth (25) comprise a flat portion extending substantially at a right angle relative to the bristle filaments.
  12. The apparatus according to claim 10 or 11, characterized in that the teeth (25) comprise displacement cheeks (27) extending in parallel with the bristle filaments.
  13. The apparatus according to any one of claims 10 to 12, characterized in that the teeth (25) extend in different planes.
  14. The apparatus according to any one of claims 10 to 13, characterized in that the teeth (25) are shaped to extend in parallel with one another.
EP99964664A 1999-12-22 1999-12-22 Method for producing brushes and device for implementing said method Expired - Lifetime EP1239752B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1999/010328 WO2001045534A1 (en) 1999-12-22 1999-12-22 Method for producing brushes and device for implementing said method

Publications (2)

Publication Number Publication Date
EP1239752A1 EP1239752A1 (en) 2002-09-18
EP1239752B1 true EP1239752B1 (en) 2004-07-28

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ID=8167544

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Application Number Title Priority Date Filing Date
EP99964664A Expired - Lifetime EP1239752B1 (en) 1999-12-22 1999-12-22 Method for producing brushes and device for implementing said method

Country Status (4)

Country Link
US (1) US6808236B2 (en)
EP (1) EP1239752B1 (en)
DE (1) DE59910085D1 (en)
WO (1) WO2001045534A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY135457A (en) * 2003-07-23 2008-04-30 Lai Joo Koi Brush holder
EP2409598B1 (en) * 2010-07-22 2018-09-26 Braun GmbH Method for producing a toothbrush head
DE102016107641A1 (en) * 2016-04-25 2017-10-26 Gb Boucherie Nv Machine for the production of brushes
DE102019105877B4 (en) * 2019-03-07 2022-10-13 Zahoransky Ag Shearing device and brush manufacturing machine with shearing device and use of a shearing device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078569B1 (en) * 1981-11-04 1988-01-07 G.B. Boucherie, N.V. Device for separating rows of brush hairs
DE458999T1 (en) * 1990-05-31 1992-08-13 G.B. Boucherie N.V., Izegem, Be DEVICE FOR SHEARING BRUSHES OF A TOOTHBRUSH IN CERTAIN AREAS OF THE BRISTLE FIELD.
US5593213A (en) * 1994-03-11 1997-01-14 Gillette Canada Inc. Bristle finishing fork
GB9423421D0 (en) 1994-11-19 1995-01-11 Smithkline Beecham Plc Novel device
US5628082A (en) 1995-03-22 1997-05-13 Colgate-Palmolive Company Toothbrush with improved efficacy
BE1009283A3 (en) * 1995-04-05 1997-01-07 Boucherie Nv G B METHOD AND DEVICE FOR WORKING brushes.
DE19526933B4 (en) * 1995-07-24 2009-06-10 Anton Zahoransky Gmbh & Co. Apparatus for processing portions of a bristle field of brushes
DE19728493A1 (en) * 1996-07-06 1998-02-12 Zahoransky Anton Gmbh & Co Device for pushing outer bristles of brushes outward

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WO2001045534A1 (en) 2001-06-28
DE59910085D1 (en) 2004-09-02
EP1239752A1 (en) 2002-09-18
US20030001427A1 (en) 2003-01-02
US6808236B2 (en) 2004-10-26

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