EP0346646B2 - Method and apparatus for manufacturing brush ware - Google Patents

Method and apparatus for manufacturing brush ware Download PDF

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Publication number
EP0346646B2
EP0346646B2 EP89109137A EP89109137A EP0346646B2 EP 0346646 B2 EP0346646 B2 EP 0346646B2 EP 89109137 A EP89109137 A EP 89109137A EP 89109137 A EP89109137 A EP 89109137A EP 0346646 B2 EP0346646 B2 EP 0346646B2
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EP
European Patent Office
Prior art keywords
bristles
bristle
utilization
clamping
side ends
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
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EP89109137A
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German (de)
French (fr)
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EP0346646B1 (en
EP0346646A2 (en
EP0346646A3 (en
Inventor
Georg Weihrauch
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Coronet Werke GmbH
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Coronet Werke GmbH
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Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B9/00Arrangements of the bristles in the brush body
    • A46B9/02Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B3/00Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/06Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by welding together bristles made of metal wires or plastic materials
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46DMANUFACTURE OF BRUSHES
    • A46D3/00Preparing, i.e. Manufacturing brush bodies
    • A46D3/04Machines for inserting or fixing bristles in bodies
    • A46D3/045Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body

Definitions

  • the invention relates to a method for manufacturing of bristle goods according to the generic term of Claim 1 and a device according to the preamble of claim 9 for performing the method.
  • bristle products for a variety of bristle products, in particular those common in the personal care field be used, e.g. Toothbrushes, fine Hand brushes, cosmetic brushes or the like, and such which are used for fine application of media, like brushes or the like, there are special requirements the quality of the bristles and the bristle trim. So the usage-side, free Bristle ends no sharp edges, fanning od. Like. Have, since they cause skin injuries - In the case of toothbrushes in particular to mucosal injuries - or to one uneven job. On top of that, Bristles with sharp-edged and irregular Wear out more quickly, break out etc. For this reason, the usage side Ends of the bristles are rounded so that ideally they form a spherical surface. The need to round the bristle ends and the problems that arise are including, for example, US-A-2,227,126 described.
  • bristles are generally made by a kind of grinding process on the finished brush (US-A-2 227 126), taking the guide of the grinding tool and / or the bristles should be such that all bristles of a bundle or an entire Bristle trim detected and rounded evenly become. In the known case, this happens through multi-stage grinding with form grinding tools different contour. Likewise done contouring individual bundles of bristles throughout Bristle trimming through elaborate shape grinding tools and a no less complex one Guiding the brush. Instead of using Shape grinding tools is for rounding the bristle ends also a plate or conical Grinding tool known in different Direction of movement, possibly with one Wobble, over the bristle trim moves.
  • the bristle bundle contoured at the end on the use side is then connected at the opposite end to the bristle carrier, which can be done by adhesive bonding (US Pat. No. 764,898) or by thermal melting of the bristle ends (US Pat. No. 2,664,316).
  • adhesive bonding US Pat. No. 764,898
  • thermal melting of the bristle ends US Pat. No. 2,664,316.
  • a largely mechanized process sequence is possible in that the bristle bundle is inserted into a guide channel which is closed at its end by a negative shape corresponding to the desired contour.
  • the bristle bundle, which is tightly guided in the guide channel is pushed into the negative shape with a piston, the effective piston surface of which in turn has the positive shape of the later contouring.
  • the invention is related to the manufacture of bristle goods aimed at both the bristles rounded at their usage end and also all bristle ends on one of one planar plane deviating envelope surface, with either the envelope surface of individual bristle bundles and / or the envelope surface of an entire Bristle trim is meant.
  • Rounding and contouring are so far either only complex form grinding processes (US-A-2 227,126) or thermal processes (US-A-2 426 328).
  • the invention is based on the object perfect rounding of the bristle ends with consistent and reproducible quality as well contouring individual bundles of bristles or of the entire bristle stock, in which the bristle ends are rounded to enable.
  • Bristles are then removed from the clamping released and axially shifted against each other, around any contour on the user side Generate ends. Only after rounding and The bristles on the bristle carrier are contoured attached.
  • Contouring the bristles after loosening from the clamping can for example by axial displacement against a negative form with the desired contour. After that you can then the bristles at their opposite ends using one of the known technologies on Bristle carriers are attached. With this procedure the quality remains during contouring of the rounded ends completely preserved so that a contoured bristle trim, if necessary only contoured individual bundles or one combined contouring of bundles and bristle trim in any shape of the Usable area is achieved.
  • the entire bristle trim can be Rounded in one operation and then contour and then after one the known methods, e.g. B. welding, Joining, gluing, injection or foaming attach the bristle holder.
  • the bristle goods to be produced from a multitude of groups that are too multifilament summarized bristles e.g. B. bundles, strips or packages
  • the Groups of bristles after machining the usage-side ends and releasing from the Clamping individually or in groups with yours usage-side ends against the negative form be contoured.
  • bristles can be placed inside single or multiple bundles, strips or packages of greater length or height exhibit. It is also possible to have round bristle bundles with narrow bristle strips or with bristle packs to combine within a trim and to contour differently, so that a Variety of cleaning options and optimal adaptation to a specific one Cleaning task is possible.
  • the method according to the invention can be both in so-called short cuts, that is about bristles cut to working length, brush or the like, as well as when processing from the endless strand carry out.
  • short cuts that is about bristles cut to working length, brush or the like
  • processing from the endless strand carry out In the latter type of Processing becomes the endless strand of the processing station cyclically according to that in each Working cycle fed to processed bristle length.
  • the method according to the invention is particularly advantageous Transfered in such a way that the bristles clamped at the leading end of the endless strand, at a distance from this end of the endless strand forming the ends on the usage side cut off at these ends mechanically or chemically processed after detaching from the Clamping against the feeder of the Endless strand contoured against the negative shape, at a distance from the opposite ends clamped and on this to form the fastening side Ends are cut.
  • the procedure is preferably such that the bristles or bristle units after trimming at the attachment-side ends released from the fixture, with these ends ahead in a position in which it attaches to the bristle holder be moved and clamped again become.
  • the Fastening ends one for all bristles uniform supernatant achieved the clamping also during the fastening phase is effective, so that this clamping is diverse Task accomplished, namely fixing on the one hand the bristles when cutting the endless strand, during the subsequent dressing or rounding of the usage ends when trimming the Bristles on the fastening ends and finally during the fortification phase.
  • the invention is based on one Device according to the preamble of claim 1 (U.S.-A-2,227,126).
  • this known device takes the holder with the bristles occupied bristle carriers and become the bristles with their ends guided over grinding tools.
  • a device designed according to the invention is instead characterized by the characterizing features of claim 3.
  • the clamping device at a distance Cutting device is assigned, by means of which Bristles to form the ends on the usage side can be cut to plan.
  • Another known device for Contouring the bristles is suitable (US-A-2 488 873, 2 664 316), consists of one of the bristles in one channel closely leading institution, one in the channel slidable on the mounting side End of the bristle-acting piston, one assigned to the guide device, the contour corresponding to the bristles at their ends on the usage side Negative form, in which the bristles by means of the piston, and one Device for attaching the bristles to the Bristle holder after pulling back the plunger.
  • This device is due to the invention adjusted that after editing and Loosen the clamping device of the pistons in the Channel is retractable to the bristles against the Shift negative form.
  • the bristle trim consists of a plurality of bundles, strips or bundles of bristles, and the latter are not contoured in themselves, but only the individual bristle groups with each other, so is Each group of bristles has a piston with a flat one Assigned thrust area, whose cross-section - like also the cross section of the guide channel - the corresponds to the bristle group. Should, however at the same time the bristle groups are contoured the piston can be a corresponding contoured thrust surface, e.g. similar to a reducing piston, exhibit. It should also be pointed out that after rounding and contouring the bristle groups not only in parallel, but also also in any angular position on the bristle holder can be minced. It is always guaranteed that the contour is maintained and Bristle ends evenly rounded within each contour lie.
  • the invention Device designed so that in flight with the conveyor the clamping device with one corresponding to the number of endless strands Number of channels is arranged that after inserting the leading ends of the Endless strands in the channels of the clamping device is closable, and that in the direction of conveyance before Clamping device for cutting Cutting the bristles from the endless strand and to Formation of the use-side bristle ends arranged is, with the device for rounding the usage ends in front of this and the Clamping device is movable.
  • Particularly advantageous for an optimal rounding is that by simultaneously cutting off the individual clamped bristle strands on a flat plane an exact flush of the bristle ends in a flat envelope surface is reached.
  • the guide device in the feed direction of the bristles behind the Clamping device and behind this a carrier the piston is arranged and that before the clamping device one on the machined bristle ends acting thrust device is arranged by means of the bristles into the channels of the guide device can be inserted until the user side Ends on the face near them close the clamping device flush.
  • This training ensures that the usage ends after trimming in a common level corresponding to the level reach the pusher and the subsequent Retract the pistons the bristles or Bristle groups that are exact for their contouring Travel distances. This is then, for example possible if the negative form in front of the front the clamping device is movable and then the pistons on the carrier into the channels of the Guide device are retractable.
  • a cutting device is after the guide device has left the ends protruding from this end face the bristles to form the fastening side Cuts off ends.
  • the cutting device are those that protrude due to the contouring Trimmed ends so that the resulting Attachment-side ends in one plan Level.
  • the cutting device for Cutting the bristles from the endless strand at the same time the cutting device for cutting off the End of the tensioning device protruding ends form.
  • the cut Bristles using the negative form open clamping device can be moved so far in this are up to their on a plane level lying attachment-side ends of the negative form opposite end of the clamping device with one for attachment to the bristle holder exceed the necessary length.
  • the negative form also serves as Push element for moving the bristles in an attachment position. The remains the Bristles have previously been contoured exactly.
  • the clamping device during attaching the bristles to the bristle carrier serve for axially securing the bristles, so that it fulfills a diverse function. Do they succeed individual operations at different workstations, so the clamping device with the Bristles move along and migrate from workstation to workstation. In this way of working must then one corresponding to the number of work stations Number of clamping devices available his.
  • FIG. 1a and FIG. 1b The processing is shown in FIG. 1a and FIG. 1b the bristles from the endless strand are shown schematically.
  • Three endless strands 1 are shown here, those supplied by coils by means of a conveyor become.
  • Two clamping devices arranged one behind the other 2, the guide channels 3 for the endless strands 1 and each have a slide 4, the the cross-section of the channels 3 narrowed like an aperture and fixed the endless strands 1 in this way.
  • the first clamping device 2 (in the drawing reproduced on the right) may be in the direction of conveyance be moved back and forth and through Clamping and then moving in the conveying direction with the second clamping device open at the same time 2 advance the endless strands 1 in cycles.
  • the peeling can also be done by means of a arranged behind the second clamping device 2 Clamping device 5 take place, likewise has a diaphragm-like slide 6, by means of which provided in the clamping device 5 Channels 7 can be narrowed.
  • a arranged behind the second clamping device 2 Clamping device 5 take place likewise has a diaphragm-like slide 6, by means of which provided in the clamping device 5 Channels 7 can be narrowed.
  • Figure 1a and 1b the latter embodiment is shown.
  • the Slide 6 moves into the closed position, so that the Endless strands 1 are clamped at their leading end are. Then the clamping device 5, as from the comparison of Figure 1a and 1b can be seen to the left by about the necessary amount Bristle length shifted. Then drives a cutting device 8 in front of the front face 9 of the front clamping device 2 and separates the individual bundles 10 from the endless strands 1 from. The ends later used for attachment 11 of the bundles 10 close approximately with the front End face of the clamping device 5, while the Free ends 12 on the usage side.
  • stage according to 1c is in front of the ends 12 on the usage side retracted a tapered grinding tool 13, the in a translational and a rotary Motion blends the ends on the usage side. If necessary, also a vertical one lying on the plane of the drawing or a wobbling one Motion overlaid.
  • a blind hole 19 for each bundle of bristles 10 has, the blind holes 19 with the channels 7 in the clamping device 5 and the channels 15 are aligned in the guide device 14.
  • the blind holes 19 have different depths. The floor the blind holes form the later contour of the Bristle bundle on the finished bristle product.
  • the carrier 20 with the piston 21 is on the Guide device 14 moves so that the pistons 21 penetrate into the guide channels 15 and move the bristles 10 inside so far until they hit the bottom of the blind holes 19, so that the user-side ends 12 of the Bristle bundles 10 lie in the desired contour, as shown in Figure 1f.
  • a spacer plate 23 may be provided between the clamping device 5 and the negative mold 18 retracted can be.
  • the bundles of bristles 10 with the clamping device 5 open shifted in the direction of its use-side end 12, by with a fixed clamping device 5 and guide device 14 of the carrier 20 with the piston 21 and the negative mold 18 synchronously be moved (in Figure 1g to right).
  • This has recesses, z. B. slots or the like.
  • the Bristle bundles 10 are penetrated. After another Clamping the bristle bundle 10 by means of Slider 6 in the clamping device 5 is done Cutting the cutting knife 22.
  • Figures 2a to 2e is a single bristle bundle 25 based on three lying in the drawing plane Single bristles 26 shown.
  • the pre-cut and combined into a bundle 25 Bristles 26 (Figure 2a) are first clamped and at their ends 27 by rounding prepared ( Figure 2b).
  • Figure 2c With the dashed Line in Figure 2c is the section for generating the fastening ends 29 and with 30, 31 of waste of different lengths, when cutting to length occurs, indicated.
  • the location of the bristles can 26 thereby fixed within the bundle 25 be that the bristles 26 on their attachment side End melted into a thickening 32 be ( Figure 2d).
  • This thickening 29 can then in a subsequent step for fastening serve within the bristle carrier 33, for example by injecting, foaming or Paste ( Figure 2e).
  • the method according to the invention is shown in FIG based on a finished bristle product in the form of a Toothbrush 34 shown, with the handle 35 one-piece back 36 is made of plastic. she has bristle bundles 37 and 38 different Length whose ends 39 or 40 lie in a contoured envelope surface and the are in turn contoured.
  • the bristle bundles 37 and 38 can - similar to that described in FIGS. 2d and 2e - By thickening 41 or 42 in Back 36 of toothbrush 34 may be anchored.
  • FIG 4 shows a round brush 43, such as that also used for dental care and not by means of an axial bearing 44 shown drive shaft is placed.
  • the round brush 43 has an outer bristle ring Bundle 45 at their ends on the usage side 46 are convexly contoured. Furthermore, the Round brush 43 from an inner bristle ring Bundles 47 at their usage ends 48 are contoured concave.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Fodder In General (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Feed For Specific Animals (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Borstenwaren nach dem Oberbegriff des Anspruchs 1 und eine Vorrichtung nach dem Oberbegriff des Anspruchs 9 zur Durchführung des Verfahrens.The invention relates to a method for manufacturing of bristle goods according to the generic term of Claim 1 and a device according to the preamble of claim 9 for performing the method.

Bei einer Vielzahl von Borstenwaren, insbesondere solchen, die allgemein im Bereich der Körperpflege eingesetzt werden, z.B. Zahnbürsten, feine Handbürsten, Kosmetik-Pinsel od. dgl., und solchen, die zum feinen Auftragen von Medien dienen, wie Pinsel od. dgl., bestehen besondere Anforderungen an die Qualität der Borsten und des Borstenbesatzes. So sollen die nutzungsseitigen, freien Enden der Borsten keine scharfen Kanten, Aufspleißungen od. dgl. aufweisen, da diese zu Hautverletzungen - im Falle von Zahnbürsten insbesondere zu Schleimhautverletzungen - oder zu einem ungleichmäßigen Auftrag führen. Hinzu kommt, daß Borsten mit scharfkantigem und unregelmäßigem Nutzungsende schneller verschleißen, ausbrechen etc. Aus diesem Grunde sollten die nutzungsseitigen Enden der Borsten verrundet werden, so daß sie im Idealfall eine sphärische Oberfläche bilden. Die Notwendigkeit des Verrundens der Borstenenden und die hierbei auftretenden Probleme sind umfassend beispielsweise in der US-A-2 227 126 beschrieben.For a variety of bristle products, in particular those common in the personal care field be used, e.g. Toothbrushes, fine Hand brushes, cosmetic brushes or the like, and such which are used for fine application of media, like brushes or the like, there are special requirements the quality of the bristles and the bristle trim. So the usage-side, free Bristle ends no sharp edges, fanning od. Like. Have, since they cause skin injuries - In the case of toothbrushes in particular to mucosal injuries - or to one uneven job. On top of that, Bristles with sharp-edged and irregular Wear out more quickly, break out etc. For this reason, the usage side Ends of the bristles are rounded so that ideally they form a spherical surface. The need to round the bristle ends and the problems that arise are including, for example, US-A-2,227,126 described.

Bei vielen Borstenwaren ist es ferner erwünscht, die Hüllfläche der Borstenenden zu konturieren, um entweder lokal gezielte Reinigungswirkung zu erreichen, wie dies beispielsweise bei Zahnbürsten der Fall ist, oder ein flächiges Auftragen beim Hin- und Herbewegen des Gerätes zu erzielen, wofür als Beispiel Rasierpinsel, Malerpinsel od. dgl. genannt werden können. Dabei kommt es entweder darauf an, dem freien Ende eines Borstenbündels eine bestimmte Kontur zu geben, oder aber sämtliche Borsten eines Borstenbesatzes zu konturieren. Bei bestimmten Bürsten kann sowohl eine Konturierung des einzelnen Borstenbündels, als auch des gesamten Borstenbesatzes erwünscht sein. Auch das Problem des Konturierens ist beispielsweise in der US-A-2 227 126 umfassend geschildert.For many bristle products, it is also desirable to contour the envelope surface of the bristle ends, to either locally targeted cleaning action to achieve, such as at Toothbrushing is the case, or an extensive application when moving the device back and forth achieve what for example shaving brushes, paintbrushes or the like. Here comes it either depends on the free end of one To give the bristle bundle a certain contour, or all the bristles of a bristle trim to contour. With certain brushes, both contouring the individual bristle bundle, as well as the entire bristle trim is desired his. Also the problem of contouring is included, for example, in US-A-2,227,126 portrayed.

Das Verrunden der nutzungsseitigen Enden der Borsten erfolgt bis heute im allgemeinen durch eine Art Schleifvorgang an der fertigen Bürste (US-A-2 227 126), wobei die Führung des Schleifwerkzeugs und/oder der Borsten so erfolgen sollte, daß alle Borsten eines Bündels bzw. eines gesamten Borstenbesatzes erfaßt und gleichmäßig verrundet werden. In dem bekannten Fall geschieht dies durch mehrstufiges Schleifen mit Formschleifwerkzeugen unterschiedlicher Kontur. Ebenso erfolgt das Konturieren einzelner Borstenbündel des gesamten Borstenbesatzes durch aufwendige Formschleifwerkzeuge und eine nicht minder aufwendige Führung der Bürste. Statt der Verwendung von Formschleifwerkzeugen ist zum Verrunden der Borstenenden auch ein teller- oder kegelförmiges Schleifwerkzeug bekannt, das in unterschiedlichen Bewegungsrichtungen, gegebenenfalls auch mit einer Taumelbewegung, über den Borstenbesatz fährt. Ein gleichförmiges Verrunden der Borstenenden kann auf diesem Weg nur erreicht werden, wenn die Borstenenden genau in einer Ebene und außerdem alle Borsten parallel zueinander ausgerichtet sind. Die erste Forderung wird dadurch zu erfüllen versucht, daß die freistehenden Enden der am Borstenträger befestigten Borsten mit rotierenden Messern beschnitten werden. Auch dabei verbleiben aber Längenunterschiede und es entstehen außerdem Schrägschnitte. Eine parallele Stellung aller Borsten läßt sich vielfach schon deshalb nicht verwirklichen, weil aus anwendungstechnischen Gründen winklig, z.B. V-förmig, gestellte Borsten erwünscht sind. Beide Umstände führen dazu, daß die Borsten keine rotationssymmetrisch geformten Enden, sondern ebene Schliffe, Schrägschliffe od. dgl. aufweisen.Rounding the usage ends of the To this day, bristles are generally made by a kind of grinding process on the finished brush (US-A-2 227 126), taking the guide of the grinding tool and / or the bristles should be such that all bristles of a bundle or an entire Bristle trim detected and rounded evenly become. In the known case, this happens through multi-stage grinding with form grinding tools different contour. Likewise done contouring individual bundles of bristles throughout Bristle trimming through elaborate shape grinding tools and a no less complex one Guiding the brush. Instead of using Shape grinding tools is for rounding the bristle ends also a plate or conical Grinding tool known in different Direction of movement, possibly with one Wobble, over the bristle trim moves. Uniform rounding of the bristle ends can only be achieved in this way if the bristle ends exactly in one plane and also all bristles aligned parallel to each other are. The first requirement thereby becomes tries to meet the free-standing ends of the bristles attached to the bristle holder with rotating Knives are trimmed. Remain here too but differences in length and it arises also bevel cuts. A parallel position all the bristles can therefore often not be realize because of application technology Angled reasons, e.g. V-shaped bristles are desired. Both circumstances lead to the fact that the bristles are not rotationally symmetrical Ends, but flat cuts, bevel cuts or Like. Have.

Zum Konturieren und Verrunden eines Borstenbesatzes, z.B. an Zahnbürsten, ist es ferner bekannt (EP-A-0 078 569), die freien Borstenenden durch Schneidwerkzeuge mechanisch zu bearbeiten, wobei die nicht zu bearbeitenden Borsten aus der Umlaufbahn des Schneidwerkzeugs herausgebogen werden. Dieses Verfahren ist aufwendig und ermöglicht nur die Herstellung einfacher, konkaver Konturen mit in der äußeren Reihe längeren Borsten als im inneren Bereich.For contouring and rounding bristle trimmings, e.g. on toothbrushes, it is also known (EP-A-0 078 569), the free bristle ends mechanically processed by cutting tools, the bristles not to be machined bent out of the orbit of the cutting tool become. This process is complex and only allows the production of simple, concave Contours with longer bristles in the outer row than inside.

Zum Verrunden der nutzungsseitigen Enden der Borsten und zum Konturieren einzelner Bündel bzw. des gesamten Borstenbesatzes ist ferner ein thermisches Verfahren bekannt (US-A-2 426 328). Hierbei werden die einzelnen Borsten an ihren Enden durch Berührung an einer Heizfläche aufgeschmolzen und verrundet. Dabei entstehen jedoch im Falle von Kunststoff-Borsten Verdickungen, die häufig unerwünscht sind. Diese Verdickungen sollen nach dem bekannten Verfahren entfernt werden, doch kann dann wiederum kein einwandfreies, sphärisches Borstenende erhalten werden. In gleicher Weise sollen einzelne Borstenbündel dadurch konturiert werden, daß sie auf entsprechend konturierte, geheizte Werkzeuge aufgestoßen werden. Auch hier ist die Entstehung einer definierten Kontur weitgehend dem Zufall überlassen und es ist vor allem nicht das Problem der Bildung von Verdickungen etc. gelöst.For rounding the ends on the usage side the bristles and for contouring individual bundles or the entire bristle stock is also a thermal process known (US-A-2 426 328). Here, the individual bristles at their ends melted by touching a heating surface and rounded. However, this creates in the case of plastic bristles thickening that are often undesirable. These thickenings are said to are removed by the known method, but then again no perfect, spherical bristle end can be obtained. In the same Individual bristle bundles are said to be thereby be contoured so that they are contoured accordingly, heated tools are pushed open. Here, too, is the emergence of a defined contour largely left to chance and it is especially not the problem of thickening etc. solved.

Keines der bekannten Verfahren zum rotationssymmetrischen Bearbeiten, insbesondere zum Verrunden der Borstenenden führt zu einer befriedigenden Qualität. Dies haben umfangreiche elektronenmikroskopische Untersuchungen an den auf dem Markt am weitesten verbreiteten Zahnbürsten gezeigt ("Zahnärztliche Mitteilungen" 1987, Heft 16 Seite 1740 bis 1745; "Quintessence International" 1988, Heft 2 Seite 87 bis 107).None of the known methods for rotationally symmetrical Editing, especially for rounding the bristle ends leads to a satisfactory one Quality. This has extensive electron microscopic Investigations on the most popular toothbrushes in the market shown ("Zahnärztliche Mitteilungen" 1987, issue 16 Pages 1740 to 1745; "Quintessence International" 1988, Issue 2 pages 87 to 107).

Das bloße Konturieren einzelner Borstenbündel hat sich schon in einem sehr frühen Stadium der Bürstentechnik bei Rasierpinseln und Malerpinseln als notwendig erwiesen. Bei einer bekannten Verfahrenstechnik (US-A-392 420, 1 923 884) wird das Borstenbündel mit seinem befestigungsseitigen Ende voraus auf eine Formfläche aufgestoßen, deren Kontur der gewünschten Kontur am nutzungsseitigen Ende entspricht. Die letztgenannte Kontur entsteht dadurch, daß sich die Borsten innerhalb des Bündels entsprechend der Kontur der Formfläche axial gegeneinander verschieben. Bei einem ähnlichen Verfahren wird das Borstenbündel mit seinem nutzungsseitigen Ende voraus in eine der gewünschten Kontur entsprechende Negativ-Form eingestoßen (US-A-764 898, 2 664 316). Anschließend wird dann das am nutzungsseitigen Ende konturierte Borstenbündel am gegenüberliegenden Ende mit dem Borstenträger verbunden, was durch Kleben (US-A-764 898) oder durch thermisches Aufschmelzen der Borstenenden (US-A-2 664 316) erfolgen kann. Im letztgenannten Fall ist ein weitgehend mechanisierter Verfahrensablauf dadurch möglich, daß das Borstenbündel in einen Führungskanal eingesetzt ist, der an seinem Ende durch eine der gewünschten Kontur entsprechende Negativ-Form abgeschlossen ist. Das im Führungskanal eng geführte Borstenbündel wird mit einem Kolben, dessen wirksame Kolbenfläche wiederum die Positiv-Form der späteren Konturierung aufweist, in die Negativ-Form geschoben. Ein ähnliches Vorgehen ist auch bei einer Zahnbürste bekannt (US-A-2 488 873), bei dem jedoch ein Bündel mit den befestigungsseitigen Enden voraus auf eine Positiv-Form mittels eines Kolbens mit entsprechender Negativ-Form, der am nutzungsseitigen Ende der Borsten angreift, aufgeschoben wird. Bei einem ähnlichen Verfahren (EP-A-0 142 885) werden sämtliche Borsten eines Borstenbesatzes, die sich in den Kanälen einer Führungseinrichtung befinden, mit einer auf ihr nutzungsseitiges Ende einwirkenden Schubplatte, die an ihrer Oberseite Negativ-Konturen für jeden Führungskanal aufweist, durch axiales Verschieben konturiert. Hier hängt jedoch die Exaktheit der Konturierung sehr maßgeblich und unkontrollierbar von den Reibungskräften innerhalb des Führungskanals und zwischen den Borsten ab. The mere contouring of individual bristle bundles has proven to be necessary at a very early stage of brush technology for shaving brushes and paintbrushes. In a known process technology (US-A-392 420, 1 923 884), the bristle bundle is pushed open with its fastening-side end in advance onto a shaped surface, the contour of which corresponds to the desired contour at the end on the usage side. The latter contour arises from the fact that the bristles within the bundle move axially relative to one another in accordance with the contour of the shaped surface. In a similar process, the bristle bundle is pushed into a negative shape corresponding to the desired contour with its end on the usage side (US Pat. No. 764,898, 2,664,316). The bristle bundle contoured at the end on the use side is then connected at the opposite end to the bristle carrier, which can be done by adhesive bonding (US Pat. No. 764,898) or by thermal melting of the bristle ends (US Pat. No. 2,664,316). In the latter case, a largely mechanized process sequence is possible in that the bristle bundle is inserted into a guide channel which is closed at its end by a negative shape corresponding to the desired contour. The bristle bundle, which is tightly guided in the guide channel, is pushed into the negative shape with a piston, the effective piston surface of which in turn has the positive shape of the later contouring. A similar procedure is also known for a toothbrush (US-A-2 488 873), in which, however, a bundle with the attachment-side ends ahead of a positive shape by means of a piston with a corresponding negative shape, which engages the use-side end of the bristles , is postponed. In a similar method (EP-A-0 142 885), all the bristles of a bristle stock that are located in the channels of a guide device are pushed through with a push plate acting on their use-side end, which has negative contours on the top for each guide channel contoured axial displacement. Here, however, the exactness of the contouring depends very significantly and uncontrollably on the frictional forces within the guide channel and between the bristles.

Die Erfindung ist auf die Herstellung von Borstenwaren gerichtet, bei denen sowohl die Borsten an ihrem nutzungsseitigen Ende verrundet und außerdem sämtliche Borstenenden auf einer von einer planen Ebene abweichenden Hüllfläche liegen, womit entweder die Hüllfläche einzelner Borstenbündel und/oder die Hüllfläche eines gesamten Borstenbesatzes gemeint ist. Für das kombinierte Verrunden und das Konturieren sind bisher entweder nur aufwendige Formschleifverfahren (US-A-2 227 126) oder thermische Verfahren (US-A-2 426 328) bekannt.The invention is related to the manufacture of bristle goods aimed at both the bristles rounded at their usage end and also all bristle ends on one of one planar plane deviating envelope surface, with either the envelope surface of individual bristle bundles and / or the envelope surface of an entire Bristle trim is meant. For the combined Rounding and contouring are so far either only complex form grinding processes (US-A-2 227,126) or thermal processes (US-A-2 426 328).

Der Erfindung liegt die Aufgabe zugrunde, ein einwandfreies Verrunden der Borstenenden mit gleichbleibender und reproduzierbarer Qualität sowie ein Konturieren einzelner Borstenbündel oder des gesamten Borstenbesatzes, bei denen die Borstenenden verrundet sind, zu ermöglichen.The invention is based on the object perfect rounding of the bristle ends with consistent and reproducible quality as well contouring individual bundles of bristles or of the entire bristle stock, in which the bristle ends are rounded to enable.

Ausgehend von dem Verfahren nach dem Oberbegriff des Anspruchs 1 (US-A-2 227 126) wird die Aufgabe gemäß der Erfindung in verfahrenstechnischer Hinsicht durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.Based on the procedure according to Preamble of claim 1 (US-A-2 227 126) the task according to the invention in process engineering Regarded solved by the characterizing features of claim 1.

In Abkehr von den meisten bekannten Verfahren werden bei der Erfindung die nutzungsseitigen Enden der Borsten vor deren Befestigung am Borstenträger bearbeitet, um eine rotationssymmetrische Ausbildung der Borstenenden zu erzielen. Dadurch werden alle qualitätsmindernden Einflüsse, die sich aus einer vorherigen Befestigung der Borsten am Borstenträger aufgrund von Fertigungstoleranzen (Borstenlänge) und Borstenstellung ergeben, eliminiert.In a departure from most known methods are the user side in the invention Ends of the bristles before they are attached to the bristle holder edited to be rotationally symmetrical To achieve formation of the bristle ends. Thereby all quality-reducing influences, resulting from a previous attachment of the bristles on the bristle carrier due to manufacturing tolerances (Bristle length) and bristle position result, eliminated.

Bei dem erfindungsgemäßen Verfahren werden die Borsten, die in Form von Kurzschnitten oder vom Endlosstrang verarbeitet werden können, so bereitgestellt, daß sich ihre nutzungsseitigen Enden auf einer ebenen Hüllfläche befinden. In diesem Zustand werden die Borsten mit Abstand von ihrem nutzungsseitigen Ende eingespannt und anschließend an diesen Enden verrundet. Dies kann in herkömmlicher Weise durch Schleifen, aber auch durch chemische Ätzverfahren od. dgl. geschehen. Durch die Tatsache, daß sämtliche Borsten in einer Ebene liegen, lassen sich die nutzungsseitigen Enden einwandfrei und gleichmäßig verrunden.In the method according to the invention the bristles in the form of short cuts or can be processed from the endless strand, so provided that their usage ends on a flat envelope. In this Condition the bristles at a distance from theirs clamped on the usage side and then rounded at these ends. This can be done in conventionally by grinding, but also done by chemical etching or the like. The fact that all bristles in one Layers are flat, the ends on the usage side round perfectly and evenly.

Die an ihren nutzungsseitigen Enden bearbeiteten Borsten werden anschließend aus der Einspannung gelöst und axial gegeneinander verschoben, um eine beliebige Kontur an den nutzungsseitigen Enden zu erzeugen. Erst nach dem Verrunden und Konturieren werden die Borsten an dem Borstenträger befestigt.Machined at their usage ends Bristles are then removed from the clamping released and axially shifted against each other, around any contour on the user side Generate ends. Only after rounding and The bristles on the bristle carrier are contoured attached.

Von besonderer Wichtigkeit beim erfindungsgemäßen Verfahren ist die Tatsache, daß die Borstenenden vor der Bearbeitung auf einer ebenen Hüllfläche liegen. Dies läßt sich dadurch erreichen, daß die Borsten mit diesen Enden an einer ebenen Fläche gestoßen werden, vorzugsweise jedoch ist vorgesehen, daß die Borsten nach dem Einspannen mit Abstand von der Einspannung zur Bildung der nutzungsseitigen Enden plan abgeschnitten und anschließend an diesen Enden bearbeitet werden. Damit ist gewährleistet, daß für jede einzelne Borste absolut gleiche Bedingungen der Bearbeitung vorliegen.Of particular importance in the invention Process is the fact that the bristle ends before processing on a plane Envelope surface. This can be achieved that the bristles with these ends on a flat Surface butt is preferred provided that the bristles after clamping at a distance from the clamping to form the Cut ends flat on the usage side and then processed at these ends. This ensures that for each individual bristle absolutely identical conditions of processing available.

Das Konturieren der Borsten nach dem Lösen aus der Einspannung kann beispielsweise durch axiales Verschieben gegen eine Negativ-Form mit der gewünschten Kontur erfolgen. Danach können dann die Borsten an ihren gegenüberliegenden Enden mit Hilfe einer der bekannten Technologien am Borstenträger befestigt werden. Bei diesem Verfahren bleibt während des Konturierens die Qualität der verrundeten Enden vollständig erhalten, so daß ein konturierter Borstenbesatz, gegebenenfalls auch nur konturierte Einzelbündel oder aber eine kombinierte Konturierung von Bündeln und Borstenbesatz in jeder beliebigen Formgebung der Nutzfläche erzielt wird.Contouring the bristles after loosening from the clamping can for example by axial displacement against a negative form with the desired contour. After that you can then the bristles at their opposite ends using one of the known technologies on Bristle carriers are attached. With this procedure the quality remains during contouring of the rounded ends completely preserved so that a contoured bristle trim, if necessary only contoured individual bundles or one combined contouring of bundles and bristle trim in any shape of the Usable area is achieved.

So kann gemäß einer Variante des erfindungsgemäßen Verfahrens insbesondere vorgesehen werden, daß sämtliche den Borstenbesatz einer Borstenware bildenden Borsten mit Abstand von ihren in einer planen Ebene liegenden, nutzungsseitigen Enden eingespannt, ihre nutzungsseitigen Enden mechanisch oder chemisch bearbeitet, anschließend aus der Einspannung gelöst und daraufhin gegen die Negativ-Form konturiert werden.Thus, according to a variant of the invention Procedure provided in particular be that all the bristle trim one Bristles forming bristles at a distance of yours, on a plane level, on the usage side Clamped ends, their usage side Finished mechanically or chemically, then released from the clamping and then be contoured against the negative form.

Auf diese Weise läßt sich der gesamte Borstenbesatz in einem Arbeitsgang verrunden und anschließend Konturieren und daraufhin nach einem der bekannten Verfahren, z. B. Schweißen, Fügen, Kleben, Einspritzen oder Einschäumen, an dem Borstenträger befestigen.In this way, the entire bristle trim can be Rounded in one operation and then contour and then after one the known methods, e.g. B. welding, Joining, gluing, injection or foaming attach the bristle holder.

Für den Fall, daß die herzustellende Borstenware aus einer Vielzahl von zu multifilen Gruppen zusammengefaßten Borsten, z. B. Bündein, Streifen oder Paketen besteht, kann gemäß einer bevorzugten Ausführungsform vorgesehen sein, daß die Gruppen von Borsten nach dem Bearbeiten der nutzungsseitigen Enden und dem Lösen aus der Einspannung einzeln oder gruppenweise mit ihren nutzungsseitigen Enden gegen die Negativ-Form konturiert werden.In the event that the bristle goods to be produced from a multitude of groups that are too multifilament summarized bristles, e.g. B. bundles, strips or packages, can be according to a preferred one Embodiment can be provided that the Groups of bristles after machining the usage-side ends and releasing from the Clamping individually or in groups with yours usage-side ends against the negative form be contoured.

Auf diese Weise können innerhalb eines Borstenbesatzes einzelne oder mehrere Bündel, Streifen oder Pakete eine größere Länge bzw. Höhe aufweisen. Es ist ferner möglich, runde Borstenbündel mit schmalen Borstenstreifen oder mit Borstenpaketen innerhalb eines Besatzes zu kombinieren und unterschiedlich zu konturieren, so daß eine Vielzahl von Reinigungsmöglichkeiten gegeben und eine optimale Anpassung an eine bestimmte Reinigungsaufgabe möglich ist.In this way, bristles can be placed inside single or multiple bundles, strips or packages of greater length or height exhibit. It is also possible to have round bristle bundles with narrow bristle strips or with bristle packs to combine within a trim and to contour differently, so that a Variety of cleaning options and optimal adaptation to a specific one Cleaning task is possible.

Das erfindungsgemäße Verfahren läßt sich sowohl bei sogenannten Kurzschnitten, das sind etwa auf Gebrauchslänge geschnittene Borsten, Pinsel od. dgl., wie auch beim Verarbeiten vom Endlosstrang durchführen. Bei der letztgenannten Art der Verarbeitung wird der Endlosstrang der Verarbeitungsstation taktweise entsprechend der in jedem Arbeitstakt zu verarbeitenden Borstenlänge zugeführt. Auf diese Verarbeitungsweise läßt sich das erfindungsgemäße Verfahren in besonders vorteilhafter Weise dadurch übertragen, daß die Borsten am vorlaufenden Ende des Endlosstrangs eingespannt, mit Abstand von diesem Ende vom Endlosstrang unter Bildung der nutzungsseitigen Enden abgeschnitten, an diesen Enden mechanisch oder chemisch bearbeitet, nach dem Lösen aus der Einspannung entgegen der Zuführeinrichtung des Endlosstrangs gegen die Negativ-Form konturiert, mit Abstand von den gegenüberliegenden Enden eingespannt und an diesen unter Bildung der befestigungsseitigen Enden zugeschnitten werden.The method according to the invention can be both in so-called short cuts, that is about bristles cut to working length, brush or the like, as well as when processing from the endless strand carry out. In the latter type of Processing becomes the endless strand of the processing station cyclically according to that in each Working cycle fed to processed bristle length. In this way of processing it can The method according to the invention is particularly advantageous Transfered in such a way that the bristles clamped at the leading end of the endless strand, at a distance from this end of the endless strand forming the ends on the usage side cut off at these ends mechanically or chemically processed after detaching from the Clamping against the feeder of the Endless strand contoured against the negative shape, at a distance from the opposite ends clamped and on this to form the fastening side Ends are cut.

Es wird also vom Endlosstrang in üblicher Weise ein Kurzschnitt gebildet, wobei das vorlaufende Ende die befestigungsseitigen Enden der Borsten bzw. Bündel bildet, während das an der Verarbeitungsstation durch Schnitt entstehende Ende die nutzungsseitigen Enden bildet. Diese werden dann mechanisch oder chemisch verrundet und durch Bewegen entgegen der Zuführrichtung des Endlosstrangs gegen die Negativ-Form konturiert. Aufgrund der Konturierung befinden sich die befestigungsseitigen Enden auf einer Hüllfläche, die von einer planen Ebene abweicht, so daß die Borsten an diesen Enden mit Vorteil in eine gemeinsame Ebene zurückgeschnitten werden, um sie dann am Borstenträger in herkömmlicher Weise zu befestigen.So it gets from the endless strand in the usual way a short cut, the leading End the attachment-side ends of the bristles or bundle forms while that at the processing station end created by cutting the forms ends on the usage side. Then these will mechanically or chemically rounded and by Move against the feed direction of the endless strand contoured against the negative form. by virtue of the contours are on the fastening side Ends on an enveloping surface that of deviates from a flat level so that the bristles at these ends with advantage in a common Level to be cut back on To attach bristle carriers in a conventional manner.

Dabei wird vorzugsweise so vorgegangen, daß die Borsten oder Borsteneinheiten nach dem Zuschneiden an den befestigungsseitigen Enden aus der Einspannung gelöst, mit diesen Enden voraus in eine Position, in der sie am Borstenträger befestigt werden, verschoben und erneut eingespannt werden.The procedure is preferably such that the bristles or bristle units after trimming at the attachment-side ends released from the fixture, with these ends ahead in a position in which it attaches to the bristle holder be moved and clamped again become.

Durch die vorgenannte Maßnahme wird an den befestigungsseitigen Enden ein für alle Borsten gleichmäßiger Überstand erzielt, wobei die Einspannung auch während der Befestigungsphase wirksam ist, so daß diese Einspannung eine vielfältige Aufgabe erfüllt, nämlich einerseits das Fixieren der Borsten beim Zuschneiden vom Endlosstrang, beim anschließenden Zurichten bzw. Verrunden der nutzungsseitigen Enden, beim Beschneiden der Borsten an den befestigungsseitigen Enden und schließlich während der Befestigungsphase.Through the above measure, the Fastening ends one for all bristles uniform supernatant achieved, the clamping also during the fastening phase is effective, so that this clamping is diverse Task accomplished, namely fixing on the one hand the bristles when cutting the endless strand, during the subsequent dressing or rounding of the usage ends when trimming the Bristles on the fastening ends and finally during the fortification phase.

Zur Lösung der Aufgabe in vorrichtungstechnischer Hinsicht geht die Erfindung aus von einer Vorrichtung nach dem Oberbegriff des Anspruchs 1 (US-A-2 227 126). Bei dieser bekannten Vorrichtung nimmt die Halterung den mit den Borsten besetzten Borstenträger auf und werden die Borsten mit ihren Enden über Schleifwerkzeuge geführt.To solve the problem in device technology In this respect, the invention is based on one Device according to the preamble of claim 1 (U.S.-A-2,227,126). In this known device takes the holder with the bristles occupied bristle carriers and become the bristles with their ends guided over grinding tools.

Eine erfindungsgemäß ausgebildete Vorrichtung zeichnet sich statt dessen durch die kennzeichnenden Merkmale des Anspruchs 3 aus.A device designed according to the invention is instead characterized by the characterizing features of claim 3.

In bevorzugter Ausführungsform ist vorgesehen, daß der Klemmeinrichtung mit Abstand eine Schneideinrichtung zugeordnet ist, mittels der die Borsten zur Bildung der nutzungsseitigen Enden plan zuschneidbar sind.In a preferred embodiment, that the clamping device at a distance Cutting device is assigned, by means of which Bristles to form the ends on the usage side can be cut to plan.

Eine andere bekannte Vorrichtung, die zum Konturieren der Borsten geeignet ist (US-A-2 488 873, 2 664 316), besteht aus einer die Borsten in einem Kanal eng führenden Einrichtung, einem in dem Kanal verschiebbaren, auf das befestigungsseitige Ende der Borsten wirkenden Kolben, einer der Führungseinrichtung zugeordneten, der Kontur der Borsten an ihren nutzungsseitigen Enden entsprechenden Negativ-Form, in die die Borsten mittels des Kolbens verschoben werden, und einer Einrichtung zum Befestigen der Borsten an dem Borstenträger nach dem Zurückziehen des Kolbens.Another known device for Contouring the bristles is suitable (US-A-2 488 873, 2 664 316), consists of one of the bristles in one channel closely leading institution, one in the channel slidable on the mounting side End of the bristle-acting piston, one assigned to the guide device, the contour corresponding to the bristles at their ends on the usage side Negative form, in which the bristles by means of the piston, and one Device for attaching the bristles to the Bristle holder after pulling back the plunger.

Diese Vorrichtung wird an die Erfindung dadurch angepaßt, daß nach dem Bearbeiten und Lösen der Klemmeinrichtung der Kolben in den Kanal einfahrbar ist, um die Borsten gegen die Negativ-Form zu verschieben.This device is due to the invention adjusted that after editing and Loosen the clamping device of the pistons in the Channel is retractable to the bristles against the Shift negative form.

Besteht der Borstenbesatz aus einer Mehrzahl von Borstenbündeln, -streifen oder -paketen, und werden letztere nicht in sich konturiert, sondern nur die einzelnen Borstengruppen untereinander, so ist jeder Borstengruppe ein Kolben mit einer ebenen Schubfläche zugeordnet, deren Querschnitt - wie auch der Querschnitt des Führungskanals - dem der Borstengruppe entspricht. Sollen hingegen gleichzeitig die Borstengruppen in sich konturiert werden, so kann der Kolben eine entsprechend konturierte Schubfläche, z.B. ähnlich einem Reduzierkolben, aufweisen. Es ist ferner darauf hinzuweisen, daß nach dem Verrunden und Konturieren die Borstengruppen nicht nur in Parallellage, sondern auch in beliebigen Winkelstellungen am Borstenträger beiestigt werden können. Immer ist gewährleistet, daß die Kontur beibehalten wird und innerhalb jeder Kontur gleichmäßig verrundete Borstenenden liegen.The bristle trim consists of a plurality of bundles, strips or bundles of bristles, and the latter are not contoured in themselves, but only the individual bristle groups with each other, so is Each group of bristles has a piston with a flat one Assigned thrust area, whose cross-section - like also the cross section of the guide channel - the corresponds to the bristle group. Should, however at the same time the bristle groups are contoured the piston can be a corresponding contoured thrust surface, e.g. similar to a reducing piston, exhibit. It should also be pointed out that after rounding and contouring the bristle groups not only in parallel, but also also in any angular position on the bristle holder can be minced. It is always guaranteed that the contour is maintained and Bristle ends evenly rounded within each contour lie.

Der unterschiedliche Überstand einzelner Borsten oder Borstengruppen innerhalb eines Borstenbesatzes, der durch die Verschiebung mittels der Kolben erzeugt wird, kann entweder durch unterschiedliche Hubwege der Kolben oder aber dadurch verwirklicht werden, daß alle Kolben an einem gemeinsamen Träger sitzen und entsprechend unterschiedliche Länge aufweisen.The different overhang of individual bristles or bristle groups within a bristle stock, which by the shift by means of Pistons can be generated either by different Strokes of the pistons or because of that be realized that all pistons on one common carrier sit and accordingly have different lengths.

Werden die Borsten oder Borstengruppen vom Endlosstrang verarbeitet und mittels einer Fördereinrichtung taktweise zugeführt, ist die erfindungsgemäße Vorrichtung so ausgebildet, daß in Flucht mit der Fördereinrichtung die Klemmeinrichtung mit einer der Anzahl der Endlosstränge entsprechenden Anzahl von Kanälen angeordnet ist, daß nach dem Einführen der vorlaufenden Enden der Endlosstränge in die Kanäle die Klemmeinrichtung schließbar ist, und daß in Förderrichtung vor der Klemmeinrichtung eine Schneideinrichtung zum Ablängen der Borsten vom Endlosstrang und zur Bildung der nutzungsseitigen Borstenenden angeordnet ist, wobei die Einrichtung zum Verrunden der nutzungsseitigen Enden vor diese und die Klemmeinrichtung verfahrbar ist. Besonders vorteilhaft für ein optimales Verrunden ist dabei, daß durch das gleichzeitige Abschneiden der einzeln eingespannten Borstenstränge in einer planen Ebene eine exakte Bündigkeit der Borstenenden in einer ebenen Hüllfläche erreicht wird.Are the bristles or bristle groups from Endless strand processed and by means of a conveyor fed in cycles, is the invention Device designed so that in flight with the conveyor the clamping device with one corresponding to the number of endless strands Number of channels is arranged that after inserting the leading ends of the Endless strands in the channels of the clamping device is closable, and that in the direction of conveyance before Clamping device for cutting Cutting the bristles from the endless strand and to Formation of the use-side bristle ends arranged is, with the device for rounding the usage ends in front of this and the Clamping device is movable. Particularly advantageous for an optimal rounding is that by simultaneously cutting off the individual clamped bristle strands on a flat plane an exact flush of the bristle ends in a flat envelope surface is reached.

Mit dieser Ausbildung der Vorrichtung lassen sich Borsten vom Endlosstrang taktweise in einer einzigen Arbeitsstation zuschneiden und an ihren nutzungsseitigen Enden zurichten. Statt dessen können die einzelnen Arbeitsschritte, wie Zuschneiden und Zurichten sowie die anschließenden Arbeitsgänge auch auf einer geschlossenen Bewegungsbahn mit einzelnen Bearbeitungsstationen durchgeführt werden, um auf diese Weise kürzere Taktzeiten zu erhalten.Let with this design of the device bristles from the endless strand intermittently in one cut only workstation and at their Trim ends on the usage side. Instead can do the individual steps, such as cropping and dressing and the subsequent operations even on a closed trajectory with individual processing stations be done to shorten this way Get cycle times.

Gemäß einem weiteren vorteilhaften Ausführungsbeispiel ist vorgesehen, daß die Führungseinrichtung in Zuführrichtung der Borsten hinter der Klemmeinrichtung und hinter dieser ein Träger mit den Kolben angeordnet ist und daß vor der Klemmeinrichtung eine auf die bearbeiteten Borstenenden einwirkende Schubeinrichtung angeordnet ist, mittels der die Borsten in die Kanäle der Führungseinrichtung so weit einschiebbar sind, bis die nutzungsseitigen Enden an der ihnen nahen Stirnseite der Klemmeinrichtung bündig abschließen.According to a further advantageous embodiment it is provided that the guide device in the feed direction of the bristles behind the Clamping device and behind this a carrier the piston is arranged and that before the clamping device one on the machined bristle ends acting thrust device is arranged by means of the bristles into the channels of the guide device can be inserted until the user side Ends on the face near them close the clamping device flush.

Mit dieser Ausbildung ist gewährleistet, daß die nutzungsseitigen Enden nach dem Zurichten in eine gemeinsame Ebene entsprechend der Ebene der Schubeinrichtung gelangen und beim anschließenden Einfahren der Kolben die Borsten bzw. Borstengruppen die für ihre Konturierung exakten Wege zurücklegen. Dies ist beispielsweise dann möglich, wenn die Negativ-Form vor die Stirnseite der Klemmeinrichtung verfahrbar ist und anschließend die Kolben an dem Träger in die Kanäle der Führungseinrichtung einfahrbar sind.This training ensures that the usage ends after trimming in a common level corresponding to the level reach the pusher and the subsequent Retract the pistons the bristles or Bristle groups that are exact for their contouring Travel distances. This is then, for example possible if the negative form in front of the front the clamping device is movable and then the pistons on the carrier into the channels of the Guide device are retractable.

Schließlich kann vorgesehen sein, daß an der der Negativ-Form abgekehrten Stirnseite der Klemmeinrichtung eine Schneideinrichtung angeordnet ist, die nach dem Wegfahren der Führungseinrichtung die diese Stirnseite überragenden Enden der Borsten unter Bildung der befestigungsseitigen Enden abschneidet. Mit der Schneideinrichtung werden die aufgrund der Konturierung überstehenden Enden so beschnitten, daß die entstehenden befestigungsseitigen Enden in einer planen Ebene liegen.Finally, it can be provided that at the the negative form facing away from the front of the Clamping device arranged a cutting device is after the guide device has left the ends protruding from this end face the bristles to form the fastening side Cuts off ends. With the cutting device are those that protrude due to the contouring Trimmed ends so that the resulting Attachment-side ends in one plan Level.

Sofern die gesamte Bearbeitung an einer Station stattfindet, kann die Schneideinrichtung zum Ablängen der Borsten vom Endlosstrang zugleich die Schneideinrichtung zum Abschneiden der die Stirnseite der Spanneinrichtung überragenden Enden bilden.Provided that the entire processing at one station takes place, the cutting device for Cutting the bristles from the endless strand at the same time the cutting device for cutting off the End of the tensioning device protruding ends form.

Um an den befestigungsseitigen Enden einen für die Befestigung notwendigen, gleichmäßigen Überstand aller Borsten bzw. Borstengruppen zu erhalten, ist vorzugsweise vorgesehen, daß die abgeschnittenen Borsten mittels der Negativ-Form bei geöffneter Klemmeinrichtung in dieser so weit verschiebbar sind, bis ihre in einer planen Ebene liegenden befestigungsseitigen Enden die der Negativ-Form abgekehrte Stirnseite der Klemmeinrichtung mit einer für ihre Befestigung am Borstenträger notwendigen Länge überragen.To one at the attachment ends necessary, uniform for fastening Protruding all bristles or bristle groups received, it is preferably provided that the cut Bristles using the negative form open clamping device can be moved so far in this are up to their on a plane level lying attachment-side ends of the negative form opposite end of the clamping device with one for attachment to the bristle holder exceed the necessary length.

Die Negativ-Form dient also zugleich als Schubelement zum Verschieben der Borsten in eine Befestigungsposition. Dabei bleibt die den Borsten zuvor verliehene Konturierung exakt bestehen.The negative form also serves as Push element for moving the bristles in an attachment position. The remains the Bristles have previously been contoured exactly.

Schließlich kann die Klemmeinrichtung während des Befestigens der Borsten am Borstenträger zum axialen Sichern der Borsten dienen, so daß sie eine vielfältige Funktion erfüllt. Erfolgen die einzelnen Arbeitsgänge an verschiedenen Arbeitsstationen, so wird die Klemmeinrichtung mit den Borsten mitbewegt und wandert von Arbeitsstation zu Arbeitsstation. Bei dieser Arbeitsweise muß dann eine der Anzahl der Arbeitsstationen entsprechende Anzahl von Klemmeinrichtungen vorhanden sein.Finally, the clamping device during attaching the bristles to the bristle carrier serve for axially securing the bristles, so that it fulfills a diverse function. Do they succeed individual operations at different workstations, so the clamping device with the Bristles move along and migrate from workstation to workstation. In this way of working must then one corresponding to the number of work stations Number of clamping devices available his.

Nachstehend ist die Erfindung anhand eines in der Zeichnung wiedergegebenen Ausführungsbeispiels beschrieben. In der Zeichnung zeigen:

Figur 1a - 1i
eine schematische Ansicht der für die Durchführung wesentlichen Bauteile einer Vorrichtung in den verschiedenen Stufen eines Verfahrens zur Herstellung einer Bürste;
Figur 2a - 2e
verschiedene Verfahrensstufen bei der Herstellung konturierter Borstengruppen, z. B. Borstenbündel;
Figur 3
ein Ausführungsbeispiel in Form einer Zahnbürste im Schnitt und
Figur 4
ein Ausführungsbeispiel einer Rundbürste im Schnitt.
The invention is described below using an exemplary embodiment shown in the drawing. The drawing shows:
Figure 1a - 1i
a schematic view of the essential components for the implementation of a device in the various stages of a method for producing a brush;
Figure 2a - 2e
different process stages in the production of contoured bristle groups, e.g. B. bundles of bristles;
Figure 3
an embodiment in the form of a toothbrush in section and
Figure 4
an embodiment of a round brush in section.

In Figur 1a und Figur 1b ist die Verarbeitung der Borsten vom Endlosstrang schematisch gezeigt. Hierbei sind drei Endlosstränge 1 gezeigt, die von Spulen mittels einer Fördereinrichtung zugeführt werden. Zu dieser Fördereinrichtung gehören zwei hintereinander angeordnete Spanneinrichtungen 2, die Führungskanäle 3 für die Endlosstränge 1 und je einen Schieber 4 aufweisen, der blendenartig den Querschnitt der Kanäle 3 verengt und auf diese Weise die Endlosstränge 1 fixiert. Die erste Spanneinrichtung 2 (in der Zeichnung rechts wiedergegeben) kann gegebenenfalls in Förderrichtung hin- und herbewegt werden und durch Spannen und anschließendes Bewegen in Förderrichtung bei gleichzeitig offener zweiter Spanneinrichtung 2 die Endlosstränge 1 taktweise vorschieben. Das Abziehen kann aber auch mittels einer hinter der zweiten Spanneinrichtung 2 angeordneten Klemmeinrichtung 5 erfolgen, die gleichfalls einen blendenartig wirkenden Schieber 6 aufweist, mittels dessen die in der Klemmeinrichtung 5 vorgesehenen Kanäle 7 verengt werden können. In Figur 1a und 1b ist letztgenannte Ausführung dargestellt.The processing is shown in FIG. 1a and FIG. 1b the bristles from the endless strand are shown schematically. Three endless strands 1 are shown here, those supplied by coils by means of a conveyor become. Belong to this funding facility two clamping devices arranged one behind the other 2, the guide channels 3 for the endless strands 1 and each have a slide 4, the the cross-section of the channels 3 narrowed like an aperture and fixed the endless strands 1 in this way. The first clamping device 2 (in the drawing reproduced on the right) may be in the direction of conveyance be moved back and forth and through Clamping and then moving in the conveying direction with the second clamping device open at the same time 2 advance the endless strands 1 in cycles. The peeling can also be done by means of a arranged behind the second clamping device 2 Clamping device 5 take place, likewise has a diaphragm-like slide 6, by means of which provided in the clamping device 5 Channels 7 can be narrowed. In Figure 1a and 1b, the latter embodiment is shown.

Nach dem Einführen der Endlosstränge 1 in die Kanäle 7 der Klemmeinrichtung 5 wird der Schieber 6 in die Schließlage bewegt, so daß die Endlosstränge 1 an ihrem vorlaufenden Ende eingeklemmt sind. Anschließend wird die Klemmeinrichtung 5, wie aus dem Vergleich von Figur 1a und 1b ersichtlich, nach links um etwa die notwendige Borstenlänge verschoben. Anschließend fährt eine Schneideinrichtung 8 vor die vordere Stirnseite 9 der vorderen Spanneinrichtung 2 und trennt die einzelnen Bündel 10 von den Endlossträngen 1 ab. Die später zur Befestigung dienenden Enden 11 der Bündel 10 schließen etwa mit der vorderen Stirnseite der Klemmeinrichtung 5 ab, während die nutzungsseitigen Enden 12 freistehen.After inserting the endless strands 1 in the channels 7 of the clamping device 5 is the Slide 6 moves into the closed position, so that the Endless strands 1 are clamped at their leading end are. Then the clamping device 5, as from the comparison of Figure 1a and 1b can be seen to the left by about the necessary amount Bristle length shifted. Then drives a cutting device 8 in front of the front face 9 of the front clamping device 2 and separates the individual bundles 10 from the endless strands 1 from. The ends later used for attachment 11 of the bundles 10 close approximately with the front End face of the clamping device 5, while the Free ends 12 on the usage side.

In der anschließenden Verfahrensstufe gemäß Figur 1c wird vor die nutzungsseitigen Enden 12 ein kegeliges Schleifwerkzeug 13 eingefahren, das in einer translatorischen und einer rotatorischen Bewegung die nutzungsseitigen Enden überschleift. Gegebenenfalls kann auch noch eine senkrecht zur Zeichenebene liegende oder eine taumelnde Bewegung überlagert sein.In the subsequent process stage according to 1c is in front of the ends 12 on the usage side retracted a tapered grinding tool 13, the in a translational and a rotary Motion blends the ends on the usage side. If necessary, also a vertical one lying on the plane of the drawing or a wobbling one Motion overlaid.

Nach dem Zurichten der nutzungsseitigen Enden 12 der Borstenbündel 10 wird vor die Klemmeinrichtung 5 eine Führungseinrichtung 14 eingefahren (Figur 1d), die eine den Kanälen 7 in der Klemmeinrichtung entsprechende Anzahl von fluchtenden Führungskanälen 15 aufweist. Zwischen die Klemmeinrichtung 5 und die Führungseinrichtung 14 wird gegebenenfalls noch eine Schneidplatte 16 eingesetzt, deren Aufgabe später erläutert wird. Durch Anheben des Schiebers 6 werden die Borstenbündel 10 in der Klemmeinrichtung 5 freigegeben. Auf die nutzungsseitigen Enden 12 der Borstenbündel 10 wirkt anschließend eine Schubeinrichtung 16 in Form einer Platte, welche die Borstenbündel 10 in die Führungskanäle 15 der Führungseinrichtung 14 verschiebt, bis sie mit den nutzungsseitigen Enden 12 mit der hinteren Stirnseite 17 der Klemmeinrichtung 5 bündig abschließen.After trimming the usage ends 12 of the bristle bundle 10 is in front of the clamping device 5 a guide device 14 retracted (Figure 1d), the one of the channels 7 in the Clamping device corresponding number of aligned Guide channels 15 has. Between the Clamping device 5 and the guide device 14 optionally becomes a cutting insert 16 used, whose task will be explained later. By lifting the slide 6, the bristle bundles 10 released in the clamping device 5. On the ends 12 of the bristle bundle on the use side 10 then acts a pusher 16 in the form of a plate, which the bristle bundle 10 in the guide channels 15 of the guide device 14 moves until it matches the usage-side ends 12 with the rear end face 17 of the clamping device 5 is flush.

Nach Fortbewegen der Schubeinrichtung 16 wird vor die hintere Stirnseite 17 der Klemmeinrichtung 5 eine Negativ-Form 18 gefahren (Figur 1e), die für jedes Borstenbündel 10 ein Sackloch 19 aufweist, wobei die Sacklöcher 19 mit den Kanälen 7 in der Klemmeinrichtung 5 und den Kanälen 15 in der Führungseinrichtung 14 fluchten. Die Sacklöcher 19 weisen unterschiedliche Tiefe auf. Der Boden der Sacklöcher bildet die spätere Kontur der Borstenbündel an der fertigen Borstenware.After the pusher 16 has moved is in front of the rear end face 17 of the clamping device 5 moved a negative mold 18 (FIG. 1e), a blind hole 19 for each bundle of bristles 10 has, the blind holes 19 with the channels 7 in the clamping device 5 and the channels 15 are aligned in the guide device 14. The blind holes 19 have different depths. The floor the blind holes form the later contour of the Bristle bundle on the finished bristle product.

An der gegenüberliegenden Seite der Klemmeinrichtung 5 und der Führungseinrichtung 14 ist ein Träger 20 mit einer der Anzahl der Führungskanäle 15 entsprechenden Anzahl von Kolben 21 angeordnet, die sich in ihrer Länge in gleicher Weise voneinander unterscheiden wie die Sacklöcher 19 in ihrer Tiefe.On the opposite side of the clamping device 5 and the guide device 14 a carrier 20 with one of the number of guide channels 15 corresponding number of pistons 21 arranged, which are the same in length Differentiate from each other like the blind holes 19 in depth.

Der Träger 20 mit den Kolben 21 wird auf die Führungseinrichtung 14 zubewegt, so daß die Kolben 21 in die Führungskanäle 15 eindringen und die darin befindlichen Borsten 10 so weit verschieben, bis sie am Boden der Sacklöcher 19 anstoβen, so daß die nutzungsseitigen Enden 12 der Borstenbündel 10 in der gewünschten Kontur liegen, wie dies in Figur 1f gezeigt ist.The carrier 20 with the piston 21 is on the Guide device 14 moves so that the pistons 21 penetrate into the guide channels 15 and move the bristles 10 inside so far until they hit the bottom of the blind holes 19, so that the user-side ends 12 of the Bristle bundles 10 lie in the desired contour, as shown in Figure 1f.

Anschließend werden der Träger 20 mit den Kolben 21 und die Führungseinrichtung 14 weggefahren (in Figur 1g nach links), so daß die Borstenbündel 10 mit ihren gegenüberliegenden Enden die Klemmeinrichtung 5 bzw. die davor angeordnete Schneidplatte 16 nach vorne überragen und mittels eines vor der Schneidplatte 16 geführten Schneidmessers 22 bündig zugeschnitten werden, so daß sie in einer gemeinsamen Ebene liegen (Figur 1h).Then the carrier 20 with the Piston 21 and the guide device 14 moved away (in Figure 1g to the left), so that the bristle bundle 10 with their opposite ends Clamping device 5 or the one arranged in front of it Extend the insert 16 forward and by means of a cutting knife guided in front of the cutting plate 16 22 can be cut flush so that they lie in a common plane (Figure 1h).

Um die endgültige Länge der Borsten festzulegen bzw. verschiedene Borstenlängen verwirklichen zu können, kann zusätzlich eine Distanzplatte 23 vorgesehen sein, die zwischen die Klemmeinrichtung 5 und die Negativ-Form 18 eingefahren werden kann. Zu diesem Zweck werden die Borstenbündel 10 bei geöffneter Klemmeinrichtung 5 in Richtung ihres nutzungsseitigen Endes 12 verschoben, indem bei feststehender Klemmeinrichtung 5 und Führungseinrichtung 14 der Träger 20 mit den Kolben 21 und die Negativ-Form 18 synchron verschoben werden (in Figur 1g nach rechts). Dadurch entsteht zwischen Klemmeinrichtung 5 und Negativ-Form 18 ein Spalt, in den die Distanzplatte 23 eingefahren wird. Diese weist Aussparungen, z. B. Schlitze od. dgl., auf, die von den Borstenbündeln 10 durchgriffen sind. Nach erneutem Einspannen der Borstenbündel 10 mittels des Schiebers 6 in der Klemmeinrichtung 5 erfolgt das Ablängen des Schneidmessers 22.To determine the final length of the bristles or realize different bristle lengths To be able to use a spacer plate 23 may be provided between the clamping device 5 and the negative mold 18 retracted can be. For this purpose the bundles of bristles 10 with the clamping device 5 open shifted in the direction of its use-side end 12, by with a fixed clamping device 5 and guide device 14 of the carrier 20 with the piston 21 and the negative mold 18 synchronously be moved (in Figure 1g to right). This creates between the clamping device 5 and negative form 18 a gap in which the Spacer plate 23 is retracted. This has recesses, z. B. slots or the like. On, by the Bristle bundles 10 are penetrated. After another Clamping the bristle bundle 10 by means of Slider 6 in the clamping device 5 is done Cutting the cutting knife 22.

Anschließend wird die Distanzplatte 23 zwischen Klemmeinrichtung 5 und Negativ-Form 19 ausgefahren (Figur 1h) und die Negativ-Form 19 in Richtung auf die Klemmeinrichtung 5 zubewegt, bis sie an diese anstößt, so daß die Borstenbündel 10 mit ihren befestigungsseitigen Enden 24 über die Schneidplatte 16 mit gleicher Länge überstehen (Figur 1i). In dieser Position werden die Enden 24 mit dem Borstenträger in nicht mehr gezeigter und im übrigen bekannter Weise verbunden.Then the spacer plate 23 between Clamping device 5 and negative mold 19 extended (Figure 1h) and the negative form 19 in Moved towards the clamping device 5 until abuts them so that the bristle bundle 10th with their attachment-side ends 24 over the Extend the insert 16 with the same length (Figure 1i). In this position, the ends 24 with the bristle holder in and no longer shown connected otherwise known manner.

In Figur 2a bis 2e ist ein einzelnes Borstenbündel 25 anhand von drei in der Zeichenebene liegenden Einzelborsten 26 gezeigt. Die vorgeschnittenen und zu einem Bündel 25 zusammengefaßten Borsten 26 (Figur 2a) werden zunächst eingespannt und an ihren Enden 27 durch Verrunden zugerichtet (Figur 2b). Anschließend werden die einzelnen Borsten 26 konturiert, indem sie mittels eines konturierten Kolbens in einem Führungskanal gegen eine Negativ-Form verschoben werden, so daß beispielsweise die mittlere Borste 26 bzw. eine größere Anzahl von Borsten im mittleren Bereich des Bündels 25 mit ihrem Ende 28 die übrigen Borsten überragt (Figur 2c). Mit der gestrichelten Linie in Figur 2c ist der Schnitt zur Erzeugung der befestigungsseitigen Enden 29 und mit 30, 31 der unterschiedlich lange Verschnitt, der beim Ablängen anfällt, angedeutet.In Figures 2a to 2e is a single bristle bundle 25 based on three lying in the drawing plane Single bristles 26 shown. The pre-cut and combined into a bundle 25 Bristles 26 (Figure 2a) are first clamped and at their ends 27 by rounding prepared (Figure 2b). Then the individual bristles 26 contoured by means of of a contoured piston in a guide channel against a negative form, so that, for example, the middle bristle 26 or one larger number of bristles in the middle area of the bundle 25 with its end 28 the rest Bristles protrude (Figure 2c). With the dashed Line in Figure 2c is the section for generating the fastening ends 29 and with 30, 31 of waste of different lengths, when cutting to length occurs, indicated.

Nach dem Konturieren kann die Lage der Borsten 26 innerhalb des Bündels 25 dadurch fixiert werden, daß die Borsten 26 an ihrem befestigungsseitigen Ende zu einer Verdickung 32 aufgeschmolzen werden (Figur 2d). Diese Verdickung 29 kann dann in einem folgenden Arbeitsschritt zum Befestigen innerhalb des Borstenträgers 33 dienen, beispielsweise durch Einspritzen, Einschäumen oder Einfügen (Figur 2e).After contouring, the location of the bristles can 26 thereby fixed within the bundle 25 be that the bristles 26 on their attachment side End melted into a thickening 32 be (Figure 2d). This thickening 29 can then in a subsequent step for fastening serve within the bristle carrier 33, for example by injecting, foaming or Paste (Figure 2e).

In Figur 3 ist das erfindungsgemäße Verfahren anhand einer fertigen Borstenware in Form einer Zahnbürste 34 gezeigt, deren mit dem Stiel 35 einstückiger Rücken 36 aus Kunststoff besteht. Sie weist Borstenbündel 37 und 38 unterschiedlicher Länge auf, deren nutzungsseitige Enden 39 bzw. 40 in einer konturierten Hüllfläche liegen und die ihrerseits konturiert sind. Die Borstenbündel 37 und 38 können - ähnlich wie zu Figur 2d und 2e beschrieben - mittels Verdickungen 41 bzw. 42 im Rücken 36 der Zahnbürste 34 verankert sein.The method according to the invention is shown in FIG based on a finished bristle product in the form of a Toothbrush 34 shown, with the handle 35 one-piece back 36 is made of plastic. she has bristle bundles 37 and 38 different Length whose ends 39 or 40 lie in a contoured envelope surface and the are in turn contoured. The bristle bundles 37 and 38 can - similar to that described in FIGS. 2d and 2e - By thickening 41 or 42 in Back 36 of toothbrush 34 may be anchored.

Figur 4 zeigt eine Rundbürste 43, wie sie beispielsweise gleichfalls zur Zahnpflege eingesetzt und mittels eines axialen Lagers 44 auf eine nicht gezeigte Antriebswelle aufgesetzt wird. Die Rundbürste 43 weist einen äußeren Borstenkranz aus Bündeln 45 auf, die an ihren nutzungsseitigen Enden 46 konvex konturiert sind. Ferner besitzt die Rundbürste 43 einen inneren Borstenkranz aus Bündeln 47, die an ihren nutzungsseitigen Enden 48 konkav konturiert sind.Figure 4 shows a round brush 43, such as that also used for dental care and not by means of an axial bearing 44 shown drive shaft is placed. The round brush 43 has an outer bristle ring Bundle 45 at their ends on the usage side 46 are convexly contoured. Furthermore, the Round brush 43 from an inner bristle ring Bundles 47 at their usage ends 48 are contoured concave.

Claims (20)

  1. Process for the production of bristle products from plastic with bristles whose utilization-side ends are rounded an which lie in a contour deviating from the bristle-side surface of a bristle carrier and are fastened with their opposite ends on said bristle carrier, characterized in that the bristles lying with the utilization-side ends in a plane are clamped at a distance from these ends by a clamping device, then rounded mechanically or chemically on their utilization-side ends, next loosened from the clamping and axially displaced and contoured and finally brought into a working position at a fastening device and fastened with the opposite ends on the bristle carrier.
  2. Process according to Claim 1, characterized in that the bristles after having been clamped are cut flat at a distance from the clamping for formation of the utilization-side end, and then worked on these ends.
  3. Process according to Claim 1 or 2, characterized in that the bristle after rounding are loosened from the clamping and contoured by axially displacing against a negative form and finally fastened with the opposite ends on the bristle carrier.
  4. Process according to one of Claims 1 to 3, characterized in that all of the bristles forming the bristle field of a bristle product are clamped at a distance from their utilization-side ends, lying in a plane, then their utilization-side ends are mechanically or chemically worked and then loosened from the clamping and afterward contoured against the negative form.
  5. Process according to one of Claims 1 to 3 for the production of bristle products with a large number of bristles gathered into multifilament groups, e.g:, bundles, strips or packets, characterized in that the groups of bristles, after working the utilization-side ends and loosening from the clamping, are contoured individually in groups with their utilization-side ends against the negative form.
  6. Process according to one of Claims 1 to 5, characterized in that the bristles, with their utilization-side ends in advance, are pressed against the negative form by axial displacement.
  7. Process according to one of Claims 1 to 6. wherein the bristles or bristle groups are processed from an endless strand supplied in cycles, characterized in that the bristles are clamped on the front-running end of the endless strand, cut off at a distance from this end of the endless strand, with formation of the utilization-side ends, worked mechanically or chemically on these ends, contoured against the negative form and counter to the supply device of the endless strand after loosening from the clamping, clamped at a distance from the opposite ends and cut at these ends, with formation of the fastening-side ends.
  8. Process according to one of Claims 1 to 7, characterized in that the bristles or bristle units are loosened from the clamping after the cutting on the fastening-side ends, and, with these ends in advance, are moved into a position in which they are fastened on the bristle carrier and again clamped.
  9. Apparatus for the production of bristle products from plastic with a bristle carrier and bristles fastened thereon whose utilization-side ends are rounded and are lying in a contour deviating from the fastening surface of the bristle carrier, with a holder positioning the bristles at a working station, a device capable of being brought to act on the utilization-side ends of the bristles for rounding these ends, and a device for fastening the opposite ends of the bristles to the bristle carrier, characterized in that a clamping device (5) is provided, as the holder, by means of which the bristles (10), individually or in groups, can be clamped at the working station at a distance from their utilization-side ends (12) lying in a plane, and can be brought at first into a working position at the device for rounding (13) and then to the fastening device, after axially displacing the bristles.
  10. Apparatus according to Claim 9, characterized in that the clamping device (5) is arranged at a distance from a cutting device, by means of which the bristles can be cut in a plane for formation of the utilization-side ends.
  11. Apparatus according to Claim 9 or 10 consisting of a device for guiding the bristles tightly in a canal, a piston capable of being displaced in the canal and acting on the fastening-side ends of the bristles, a negative form allocated to the guiding device and corresponding to the contour of the bristles on their utilization-side ends, in which the bristles are displaced by means of the piston, characterized in that after loosening the clamping device (5), the piston (21) can be driven into the canal (15), in order to displace the bristles (10) against the negative form (18).
  12. Apparatus according to Claim 11, characterized in that the guiding device (14) has several guiding canals (15), each for a group (10) of bristles, e.g. bundles, strips or packets, a piston (21) is provided for each guiding canal (15), and the pistons have different lengths, corresponding to the different displacement paths of the bristle units (10) until they settle on the negative form (18).
  13. Apparatus according to one of Claims 9 to 12 with a feed device supplying in cycles the bristles or bristle groups in the form of endless strands, characterized in that the clamping device (5), with a number of canals (7) corresponding to the number of endless strands (1) is located in alignment with the feed device, in that the clamping device (5) can be closed after feeding in the front-running ends (11) of the endless strands (1) into the canals, and in that, in the feed direction, before the clamping device (5) there is located a cutting device (8) for cutting to length the bristles (10) from the endless strand (1) and for formation of the utilization-side bristle ends (12).
  14. Apparatus according to one of Claims 9 to 13, characterized in that the device (13) for working the utilization-side ends (12) can be displaced before these and the clamping device (5).
  15. Apparatus according to one of Claims 9 to 14, characterized in that the guiding device (14) is located in the supply direction of the bristles (10) behind the clamping device (5) and behind this (5) is located a carrier (20) with the pistons (21), and in that, before the clamping device (5) is located a pushing device (16) acting on the worked bristle ends (12), and by means of which the bristles (20) can be displaced into the canals (15) of the guiding device (14) far enough until the utilization-side ends (12) are lying flush with the face (17) of the clamping device (5) near them.
  16. Apparatus according to one of Claims 9 to 15, characterized in that the negative form (18) can be displaced before the face (17) of the clamping device (5) and then the pistons (21) on the carrier (20) can be displaced into the canals (15) of the guiding device (14).
  17. Apparatus according to one of Claims 9 to 16, characterized in that, on the side of the clamping device (5) turned away from the negative form (18), there is located a cutting device (22), which, after moving away the guiding device (14), cuts the ends of the bristles (10) extending beyond this side, with formation of the fastening-side ends (24).
  18. Apparatus according to one of Claims 9 to 17, characterized in that the cutting device (8) for cutting to length the bristles (10) of the endless strand (1) also forms the cutting device (22) for cutting off the ends extending beyond the front side of the clamping-device (5).
  19. Apparatus according to one of Claims 9 to 18, characterized in that the cut bristles (10), with the clamping device being opened, can be displaced in this device (5) by means of the negative form (18) far enough until their fastening-side ends (24), lying in a plane, extend beyond the front side of the clamping device (5) turned away from the negative form (18) with a length necessary for their fastening to the bristle carrier.
  20. Apparatus according to one of Claims 9 to 19, characterized in that the clamping device (5) serves for axial securing of the bristles during the fastening of the bristles (10) on the bristle carrier.
EP89109137A 1988-06-15 1989-05-20 Method and apparatus for manufacturing brush ware Expired - Lifetime EP0346646B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3820372 1988-06-15
DE3820372A DE3820372C2 (en) 1988-06-15 1988-06-15 Method and device for producing bristle goods

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EP0346646A2 EP0346646A2 (en) 1989-12-20
EP0346646A3 EP0346646A3 (en) 1991-03-27
EP0346646B1 EP0346646B1 (en) 1994-09-21
EP0346646B2 true EP0346646B2 (en) 2002-04-24

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EP4403069A2 (en) 2016-04-20 2024-07-24 Trisa Holding AG Brush product

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CN1038580A (en) 1990-01-10
NO892473D0 (en) 1989-06-14
ES2060694T3 (en) 1994-12-01
MY104447A (en) 1994-03-31
FI892944A (en) 1989-12-16
MX170137B (en) 1993-08-09
FI892944A0 (en) 1989-06-15
ES2060694T5 (en) 2002-12-01
FI90390B (en) 1993-10-29
US4979782A (en) 1990-12-25
AR245353A1 (en) 1994-01-31
AU3646889A (en) 1989-12-21
CN1045528C (en) 1999-10-13
AU633489B2 (en) 1993-02-04
BR8902894A (en) 1990-02-01
NO179502B (en) 1996-07-15
NO179502C (en) 1996-10-23
KR970000804B1 (en) 1997-01-20
DK172097B1 (en) 1997-10-27
ATE111701T1 (en) 1994-10-15
DK292189D0 (en) 1989-06-14
IE891924L (en) 1989-12-15
IE64302B1 (en) 1995-07-26
HK1007477A1 (en) 1999-04-16
DK292189A (en) 1989-12-16
DD284591A5 (en) 1990-11-21
DE3820372A1 (en) 1989-12-21
EP0346646B1 (en) 1994-09-21
JPH02111305A (en) 1990-04-24
EP0346646A2 (en) 1989-12-20
JP2771255B2 (en) 1998-07-02
DE3820372C2 (en) 1997-07-24
SU1724003A3 (en) 1992-03-30
EP0346646A3 (en) 1991-03-27
DE58908382D1 (en) 1994-10-27
UA7837A1 (en) 1995-12-26
FI90390C (en) 1994-02-10
NO892473L (en) 1989-12-18
CA1328548C (en) 1994-04-19
NZ229553A (en) 1992-11-25

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