EP1136017A1 - Procédé et dispositif pour la fusion des extrêmités de poils - Google Patents

Procédé et dispositif pour la fusion des extrêmités de poils Download PDF

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Publication number
EP1136017A1
EP1136017A1 EP01106375A EP01106375A EP1136017A1 EP 1136017 A1 EP1136017 A1 EP 1136017A1 EP 01106375 A EP01106375 A EP 01106375A EP 01106375 A EP01106375 A EP 01106375A EP 1136017 A1 EP1136017 A1 EP 1136017A1
Authority
EP
European Patent Office
Prior art keywords
stamp
carrier plate
heated
plate
fiber 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.)
Granted
Application number
EP01106375A
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German (de)
English (en)
Other versions
EP1136017B1 (fr
Inventor
Bart Gerard Boucherie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GB Boucherie NV
Original Assignee
GB Boucherie NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP00105386A external-priority patent/EP1136016A1/fr
Application filed by GB Boucherie NV filed Critical GB Boucherie NV
Priority to EP20010106375 priority Critical patent/EP1136017B1/fr
Publication of EP1136017A1 publication Critical patent/EP1136017A1/fr
Application granted granted Critical
Publication of EP1136017B1 publication Critical patent/EP1136017B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/06—Brushes 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body

Definitions

  • the invention relates to a method for fusing the axial ends of bundled fibers made of thermoplastic, in which the fiber ends in contact with a heated surface of a stamp to be brought.
  • the invention further relates to a device for Attachment of bristle tufts for brushes to carrier plates thermoplastic plastic.
  • the carrier plates with the attached Tufts of bristles are built into brush bodies, particularly for the production of toothbrushes.
  • brushes Basically can brush bodies be provided with a perforated field, that corresponds to the desired bristle field.
  • the bundles of bristles become then inserted and anchored in the holes of the brush body.
  • the bristle tufts are anchored in the brush body using anchor plates or slings, however, requires very powerful and therefore elaborate machines.
  • the tufts of bristles attached to a support plate, which is then in a brush body is installed.
  • the carrier plate can with the brush body can be connected by injection molding or welding.
  • the carrier plate is provided with holes according to the desired hole pattern.
  • the tufts of bristles are inserted into the holes, taking on a surface of the carrier, the ends of the bristle tufts on the usage side and on the opposite side those to be anchored in the brush
  • the axial ends of the bristle tufts protrude slightly.
  • Against this ends of the bristle tufts to be anchored in the brush body heated stamp pressed through the ends of the bristle tufts fused together and possibly formed into a thickening become.
  • the invention provides a method for fusing the axial Provided ends of bundled fibers of thermoplastic material, in which the fiber ends with a heated surface of a Be brought into contact with the stamp.
  • the Stamp heated in its mass by controlled electrical current flow, which enables extremely fast and precisely controllable temperature changes of the stamp.
  • the fiber ends are with a heated surface of a stamp, which then is suddenly cooled. Only after the surface has cooled down the fiber ends are separated from it. This allows the Detach the fused fiber ends from the heated surface and have a geometry determined by the shape of the surface. At this Variant, the use of a non-stick coating is advantageous.
  • the fiber ends are first just like the first variant with one on a first Temperature heated surface in contact. Then will the area separated from the fiber ends, but the temperature the area remains unchanged. After that, the surface is on brought a second, higher temperature to adhere to the surface Evaporate residues of the fiber material. In the last step the surface is cooled down again to the first temperature.
  • the adhesive properties of the heated surface the heated fiber material is not critical, so that there is a non-stick layer superfluous.
  • Fibers for the Brush production mostly consists of a thermoplastic like poyamide ("nylon"). This material can be used with the specified Form the process well.
  • the invention also provides a device for fastening Bristle tufts on carrier plates for the production of brushes for Provided with the action of the stamp on the bristle ends done in a controlled and reproducible manner, so that the desired deformation of the bristle ends without undesired deformation of the carrier plate is guaranteed.
  • the stamp is heated by electrical current flow and cooled by a flowing cooling medium.
  • the stamp leaves heat up very quickly and specifically through the flow of electrical current, especially if, according to the preferred embodiment, a has low heat capacity so that it quickly a temperature cycle can go through, in one phase of the cycle by the flowing cooling medium can be cooled quickly again.
  • the stamp by controlling the electrical current alternately to a first one Temperature at which it is brought into contact with the fiber ends, and heated to a second, higher temperature at which the surface adhering fiber material evaporates.
  • the carrier plate itself is only slightly heated, since the stamp is driven by the electrical Current flow only briefly to melt the bristle ends required temperature heated and then immediately cooled again becomes.
  • the stamp preferably has a body made of electrically conductive Material on which two electrical high-current connections in the form of angled contact shoes are formed.
  • the body of the stamp has a thin-walled stamp plate that is angled by a Edge strips can be stiffened.
  • Suitable materials for manufacturing of the stamp are metals that on the one hand have sufficient mechanical Have strength so that for rapid temperature changes desired low heat capacity is guaranteed, on the other hand but have only a moderately high specific resistance, thus the electrical heating power through an uncritically low electrical voltage can be provided.
  • the necessary Heating currents are then a hundred amperes and more, for example two hundred amperes at 7 volts, but can be done in this way Control high currents well with available semiconductor devices. Due to the criteria mentioned are stainless steel, titanium and NiCr-containing alloys suitable materials for the production of the Stamp.
  • Compressed air is preferably used to cool the stamp. Because of the low heat capacity of the stamp can be directly Blowing with compressed air can be cooled again in a very short time, see above that cycle times in the range of one second are possible.
  • stamps are arranged in a group on a stamp carrier plate, and the the same number of carrier plates is placed opposite the stamps inserted into corresponding openings in a support plate.
  • the Stamps are preferably electrically in on the stamp carrier plate Series connected so that the current of the heating current does not increase. This measure is particularly useful when the stamp carrier plate with the stamps relative to those in the support plate arranged carrier plate is moved back and forth, then the electrical supply lines for the heating current must be moved, so that large conductor cross sections would be unfavorable.
  • the method fibers 1 are bundled from plastic, in particular e.g. a perforated plate 2, and placed on a stop 3.
  • the stop 3 can be flat or a profiled shaped surface have and thus for profiling the bristles by means of axial displacement the bristles are used in a known manner.
  • the free fiber ends are opposite to one through electric current flow heatable stamp 4 of any shape in particular with a shaped surface.
  • the stamp 4 has a low heat capacity, so that it is by electrical resistance heating heated very quickly and by a flowing cooling medium can be cooled down just as quickly.
  • the stamp 4 is heated to a temperature T 1 .
  • the punch 4 is pressed against the fiber ends, as shown in FIGS. 1 and 2. The fiber ends are melted and reshaped.
  • FIG. 3 the stamp 4 is then rapidly cooled by targeted blowing with compressed air. Only then, in a fourth step, FIG. 4, is the stamp separated from the now fused and cleanly formed fiber ends.
  • this is used for Manufacture of toothbrushes in which a tuft of bristles is provided Carrier plate inserted into a brush head and with it is welded. Details of such a device are, for example EP 0 972 464 A1 and EP 0 972 465 A1.
  • a stamp carrier plate 12 On a stand 10 (Fig. 5) is a stamp carrier plate 12 by means of Guide rods 14 arranged vertically back and forth, wherein the drive is ensured by a pneumatic cylinder 16.
  • Four support bases 18 are attached to the underside of the carrier plate 12, each have a downward heatable stamp 20 wear.
  • a Carrier plate 26 made of plastic can be used with a perforated field is provided according to the desired bristle field.
  • a compressed air line branched on the stamp carrier plate 12 28 can be supplied to the device with targeted blows of compressed air, which are aimed directly at the stamp 20.
  • To the stamp carrier plate 12 also stir two flexible power cables 30, over the one controlled electrical current can be supplied by pulse duration modulation can.
  • FIG. 6 shows details of the device in the area of an individual Stamp.
  • This stamp 20 the design of which can be seen in more detail in FIG. 5 is made of a metallic body, in particular stainless steel, with a thin-walled stamp plate 20a and two molded, angled high-current connections in the form of right-angled Contact shoes 20b, 20c. These contact shoes 20b, 20c serve at the same time for attaching the stamp 20 to the support bases 18, The electrical interconnection of the four stamps 20 is also carried out is.
  • the power cables 30 directly connected to a cable lug.
  • the Support base 18 are provided with openings 18a through the stamp support plate 12 connected to the compressed air line 28 are and the compressed air flow directly against the stamp plate 20a judge.
  • the carrier plate 26 inserted into the opening 24 of the support plate 22 in such a way that its peripheral edge is supported on all sides by the edge of the opening 24 is.
  • the tufts of bristles inserted into the holes in the carrier plates 32 protrude on the side of the stamp 20 by 2 to 3 millimeters out of the carrier plate 26 and are on the opposite Supported side on a bumper plate or stop 34.
  • This Stop can either be designed flat or with a shaped surface be provided at the same time for profiling the tufts of bristles by axially moving the individual bristles within one Tuft is used.
  • the stamp 20 is on the carrier plate facing surface provided with pointed projections 36, the Tips are directed against the area of the carrier plate, the surrounds the holes, and thus the tufts of bristles. Furthermore, the against the surface of the stamp facing the carrier plate with a non-stick coating Mistake.
  • the four stamps 20 are on the stamp carrier plate 12 electrically connected in series.
  • the interconnection the stamp can be made by individual cable sections or by suitable ones Design of the support base 18 take place.
  • the stamp is thin-walled component, which is formed by suitable curves Ribs, a raised peripheral edge and the angled contact shoes a high degree of dimensional stability is imparted.
  • At least one is the stamp 20, but preferably each stamp, associated with a temperature sensor 40.
  • the or each temperature sensor 40 is equipped with a controller 42 connected, which drives an electrical power supply 44, at the Outputs the power cable 30 are connected.
  • the power supply 44 works preferably with pulse duration modulation.
  • the body is made up each stamp 20 made of stainless steel.
  • the wall thickness in the area of Stamp plate 20a is only a fraction of a millimeter.
  • At a length of the stamp plate in the range of 20 millimeters and one Width of about 10 millimeters results in a heating output of about 1400 watts, corresponding to a current of 200 amps at 7 volts.
  • the Body of the stamp has such a low heat capacity that the cycle of heating and cooling on the order of magnitude of a second. The rapid cooling takes place alone by a controlled blast of compressed air that hits the surface of the stamp plate is judged.
  • the carrier plate 26 in addition to the support plate 22 by a movable support ring 48 attacks.
  • the support ring 48 has a passage opening provided for the passage of the stamp 20.
  • the support ring 48 improved the support on the peripheral edge of the support plate 26 to one Deformation of the same by the action of the heated stamp 20 to prevent.
  • this version of the device one becomes special ensures good dimensional accuracy of the support plate 26, so that at the subsequent welding to the brush head a clean connection arises.
  • the through holes are expanded on the side of the fiber ends to be fused, in particular conical.
  • Thickenings are formed, which are denoted by 5 in FIG. 10 are.
  • the "pull-out force" i.e. the tensile force in the direction "A" in Fig. 10 in which a tuft of the carrier plate 26 triggers, significantly enlarged.
  • Another increase is achieved in that the plasticized mass of the fused At least fiber ends by pressing the heated stamp is reshaped in some areas into a continuous layer, such as indicated at 6 in Fig. 10.
  • the first two steps of the second variant of the method correspond to the first two steps of the first variant.
  • the punch 4 is heated to a first temperature T 1 and pressed against the fiber ends, as shown in FIGS. 11 and 12.
  • T 1 first temperature
  • the punch 4 is now lifted off the fiber ends, but its temperature is maintained unchanged (FIG. 13).
  • T 2 a second, higher temperature
  • the stamp 4 is rapidly cooled to the temperature T 1 by targeted blowing with compressed air (FIG. 15).
  • the temperature T 1 is about 250 ° C to 300 ° C and the temperature T 2 is about 600 ° C to 700 ° C.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
EP20010106375 2000-03-21 2001-03-19 Procédé et dispositif pour la fusion des extrêmités de poils Expired - Lifetime EP1136017B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20010106375 EP1136017B1 (fr) 2000-03-21 2001-03-19 Procédé et dispositif pour la fusion des extrêmités de poils

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00105386A EP1136016A1 (fr) 2000-03-21 2000-03-21 Procédé et dispositif pour la fusion des extrêmités de poils
EP00105386 2000-03-21
EP20010106375 EP1136017B1 (fr) 2000-03-21 2001-03-19 Procédé et dispositif pour la fusion des extrêmités de poils

Publications (2)

Publication Number Publication Date
EP1136017A1 true EP1136017A1 (fr) 2001-09-26
EP1136017B1 EP1136017B1 (fr) 2003-06-25

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1839528A3 (fr) * 2006-03-14 2007-12-26 Firma G.B. Boucherie N.V. Procédé et dispositif pour la fusion des extrêmités des faisceaux de poils thermoplastique
EP2078472A1 (fr) 2008-01-10 2009-07-15 G.B. Boucherie, N.V. Tampon pour presser des faisceaux de fibres
US20110041273A1 (en) * 2008-04-01 2011-02-24 Bart Gerard Boucherie Brush, in particular for household or industrial applications
CN105828662A (zh) * 2013-12-18 2016-08-03 吉列公司 用于熔合热塑性长丝的端部的装置
BE1024474B1 (de) * 2017-03-27 2018-04-24 Bart Gerard Boucherie Druckplatteneinheit für eine Bürstenherstellungsvorrichtung sowie Bürstenherstellungsvorrichtung
DE102017130442A1 (de) 2017-12-19 2019-06-19 V-Air Machines Gmbh Verfahren und Vorrichtung zum Herstellen von Bürsten

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004016414U1 (de) 2004-10-22 2005-02-24 Firma G.B. Boucherie N.V. Vorrichtung zur Befestigung von Borstenbüscheln aus thermoplastischem Kunststoff an Trägerplättchen zur Herstellung von Bürsten und damit hergestellte Bürste
EP1661485A3 (fr) 2004-11-19 2012-07-11 FIRMA G.B. BOUCHERIE, naamloze vennootschap Brosse à dents
DE102007047066B4 (de) * 2007-10-01 2016-08-11 Zahoransky Ag Bürstenherstellungsmaschine
DE202011109451U1 (de) 2011-12-22 2012-01-31 Gb Boucherie Nv Vorrichtung zum Herstellen von Bürsten, insbesondere Zahnbürsten

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2539417A1 (de) * 1974-09-04 1976-03-18 Bruno Hersche Verfahren zur herstellung einer buerste mit kunststoffborsten
EP0405204B1 (fr) 1989-06-24 1994-09-07 Frisetta GmbH Dispositif et procédé pour façonner une répartition de soies ou une touffe de soies
US5474366A (en) * 1993-02-02 1995-12-12 Anton Zahoransky Method of assembling a brush having bristles
DE19542393A1 (de) * 1995-11-14 1997-05-15 Zahoransky Anton Gmbh & Co Verfahren zum Herstellen von Bürsten sowie Bürstenherstellungsmaschine
DE19738256A1 (de) * 1997-09-02 1999-03-11 Rueb F A Holding Gmbh Verfahren und Vorrichtung zum Herstellen von Borstenfeldern sowie damit hergestelltes Borstenfeld
DE19818553C1 (de) * 1998-04-24 1999-08-05 Rueb F A Holding Gmbh Verfahren zur Herstellung einer Zahnbürste aus Kunststoff
EP0972464A1 (fr) 1998-07-14 2000-01-19 Firma G.B. BOUCHERIE, naamloze vennootschap Procédé de fabrication de brosses et machine de fabrication de brosses pour l'application de ce procédé

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2539417A1 (de) * 1974-09-04 1976-03-18 Bruno Hersche Verfahren zur herstellung einer buerste mit kunststoffborsten
EP0405204B1 (fr) 1989-06-24 1994-09-07 Frisetta GmbH Dispositif et procédé pour façonner une répartition de soies ou une touffe de soies
US5474366A (en) * 1993-02-02 1995-12-12 Anton Zahoransky Method of assembling a brush having bristles
DE19542393A1 (de) * 1995-11-14 1997-05-15 Zahoransky Anton Gmbh & Co Verfahren zum Herstellen von Bürsten sowie Bürstenherstellungsmaschine
DE19738256A1 (de) * 1997-09-02 1999-03-11 Rueb F A Holding Gmbh Verfahren und Vorrichtung zum Herstellen von Borstenfeldern sowie damit hergestelltes Borstenfeld
DE19818553C1 (de) * 1998-04-24 1999-08-05 Rueb F A Holding Gmbh Verfahren zur Herstellung einer Zahnbürste aus Kunststoff
EP0972464A1 (fr) 1998-07-14 2000-01-19 Firma G.B. BOUCHERIE, naamloze vennootschap Procédé de fabrication de brosses et machine de fabrication de brosses pour l'application de ce procédé
EP0972465A1 (fr) 1998-07-14 2000-01-19 Firma G.B. BOUCHERIE, naamloze vennootschap Procédé de fabrication de brosses et machine de fabrication de brosses pour l'application de ce procédé

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1839528A3 (fr) * 2006-03-14 2007-12-26 Firma G.B. Boucherie N.V. Procédé et dispositif pour la fusion des extrêmités des faisceaux de poils thermoplastique
EP1985200A1 (fr) 2006-03-14 2008-10-29 Firma G.B. Boucherie N.V. Procédé de fonte des extrémités axiales de fibres en faisceau constituées de matière synthétique thermoplastique
EP2078472A1 (fr) 2008-01-10 2009-07-15 G.B. Boucherie, N.V. Tampon pour presser des faisceaux de fibres
US20110041273A1 (en) * 2008-04-01 2011-02-24 Bart Gerard Boucherie Brush, in particular for household or industrial applications
US8893344B2 (en) * 2008-04-01 2014-11-25 Gb Boucherie Nv Brush, in particular for household or industrial applications
CN105828662A (zh) * 2013-12-18 2016-08-03 吉列公司 用于熔合热塑性长丝的端部的装置
BE1024474B1 (de) * 2017-03-27 2018-04-24 Bart Gerard Boucherie Druckplatteneinheit für eine Bürstenherstellungsvorrichtung sowie Bürstenherstellungsvorrichtung
WO2018177594A1 (fr) * 2017-03-27 2018-10-04 Gb Boucherie Nv Unité de plaques d'impression pour un dispositif de fabrication de brosses et dispositif de fabrication de brosses
DE102017130442A1 (de) 2017-12-19 2019-06-19 V-Air Machines Gmbh Verfahren und Vorrichtung zum Herstellen von Bürsten

Also Published As

Publication number Publication date
EP1136017B1 (fr) 2003-06-25

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