EP1302129B1 - Dispositif pour fabriquer des articles de brosserie, en particulier de brosses à dents - Google Patents

Dispositif pour fabriquer des articles de brosserie, en particulier de brosses à dents Download PDF

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Publication number
EP1302129B1
EP1302129B1 EP02018310A EP02018310A EP1302129B1 EP 1302129 B1 EP1302129 B1 EP 1302129B1 EP 02018310 A EP02018310 A EP 02018310A EP 02018310 A EP02018310 A EP 02018310A EP 1302129 B1 EP1302129 B1 EP 1302129B1
Authority
EP
European Patent Office
Prior art keywords
bristle
discharge opening
filaments
magazine
feed chute
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02018310A
Other languages
German (de)
English (en)
Other versions
EP1302129A1 (fr
Inventor
Bernd Dr. Stein
Bryan Flood
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.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP1302129A1 publication Critical patent/EP1302129A1/fr
Application granted granted Critical
Publication of EP1302129B1 publication Critical patent/EP1302129B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/08—Preparing uniform tufts of bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/08—Parts of brush-making machines
    • A46D3/082—Magazines for bristles; Feeding bristles to magazines; Knot picking

Definitions

  • the present invention relates to a device for producing brushware, in particular toothbrushes, according to the preamble of patent claim 1.
  • the brush-stuffing device described therein has a bristle gripper to each divide a small bundle of bristles from a larger supply of bristles in a bristle magazine and supply them to the stuffing tool which anchors the bristle bundle together with a fastening anchor or a staple in the brush body.
  • the separation of small brush bundles or tufts is accomplished by providing the bristle gripper with a recess which passes along the bristle reservoir, filling the gap from the container with bristles.
  • DE-1 938 937 A1 an apparatus for making brushes having at least two bristle sorts in each bundle of bristles, each bristle sort being kept separate from the other, and wherein the bristles are removed during a feeding operation and supplied to a stuffing tool of a brush making machine.
  • two bristle magazines are provided with a rectangular cross-section, along the lower end of which run along appropriate bristle grippers and remove the desired bristle bundles.
  • the bristle magazine has a substantially quadrangular cross-section.
  • the smooth side walls have in the central region on one side a curvature, which tapers the cross section to a rectangle with a reduced base area. This area of reduced cross section has about one third of the total length of the bristle magazine.
  • To accomplish the bristle flow is at the top of the bristle magazine exerted by a hydraulic press on a pressure plate pressure.
  • a conveyor chain arranged parallel to the longitudinal axis in the lower region.
  • the desired number of bristles is gripped and fed to the brush holder.
  • FIG. 1 A schematic representation of the filament flow in the known devices of the prior art is shown in FIG.
  • the reference numeral 1 denotes the filament feed or the bristle magazine.
  • the bristle magazine 1 has a square cross section and is bounded laterally by rectangular guide walls 2. Within the rectangular guide walls 2 filaments 4 are arranged of pre-cut length. At the upper level of the bristle magazine 1 in the plane of the drawing, a pressure plate 3 is arranged on which a hydraulic force is applied in the direction of the arrow A. As a result, the filaments 4 are pressed down.
  • a perpendicular to the longitudinal axis of the bristle magazine 1 slidable bristle gripper 6 is arranged according to FIG.
  • the bristle gripper 6 is also referred to as a "picker tooling" or “picker bar”.
  • the bristle gripper 6 moves alternately back and forth along the arrow directions B.
  • the bristle gripper 6 On the side facing the bristle magazine 1, the bristle gripper 6 has recesses 7 for receiving bristles or filaments 11, the recesses 7 being also referred to as "tuft-eyes".
  • the filaments 11 located in the depressions 7 form a tufts of bristles to be fastened on a toothbrush head during subsequent processing. Due to the asymmetrical picking out of the bristle tufts, there are dead zones 5 in the bristle magazine 1, which are also referred to as "filament bridging" and which interrupt the filament flow.
  • the bristle magazine at its removal point a the cross-section of the bristle magazine corresponding discharge opening, which is closed by the bristle gripper.
  • the bristle gripper consists of a crescent-shaped, about an axis rotatable slide, at its opposite the discharge opening closure surface is formed one or more recesses for receiving filaments.
  • a disadvantage of the known Filamentzu slaughterhouse is that here zones occur in which no continuous Filamentfluß develops. Unsymmetrical picking of the filament tufts leads to dead zones and unevenness in the number of filaments per tuft.
  • the filament flow is interrupted by so-called “bridging” or “arching”.
  • "arching” or “bridging” refers to an apparent clumping of the bristle bundles, by which the flow of the solid is stopped. This has a negative effect on process safety and product quality.
  • the object of the present invention is to provide an improved apparatus for producing toothbrushes, which avoids the disadvantages of the prior art.
  • This device is intended in particular to enable the cost-effective production of brush products with high process reliability and product quality.
  • the device according to the invention ensures increased product quality, greater process reliability and greater output. Furthermore, it is possible by the device according to the invention to provide the required number of filaments per bristle gripper hub or per picker hub.
  • the magazine bottom is cup-shaped and preferably has a spherical, ellipsoidal or a similar homogeneous surface design.
  • a further advantageous embodiment of the device for producing brushed goods provides the features of claim 3. This ensures that the bristle gripper grips the filaments symmetrically from the middle of the shaft.
  • FIG. 1 shows a hereinafter referred to as a bristle magazine 8 feed unit, which is used in a brush manufacturing machine, not shown.
  • the bristle magazine 8 preferably has a rectangular cross section. Other cross sections are also conceivable.
  • the sides of the elongated bristle magazine 8 are formed in the present embodiment by rectangular guide walls 9 made of sheet steel, which are interconnected, preferably welded at metal.
  • a pressure plate 10 is arranged in its receiving space 22, to which a pressure force is applied in the direction of the arrow C. The pressure plate 10 rests on the pre-cut to a predetermined length filament bundle 21.
  • the filament bundle 21 consists of many individual, preferably extruded from plastic, very thin bristles or filaments 11, which run parallel to the pressure plate 10 and the guide walls 9, which are very close together and all the same length.
  • corresponding guide means are provided at the transition from the pressure plate 10 to the guide walls 9 to prevent tilting of the pressure plate 10 in the receiving space 22 of the bristle magazine 8.
  • the pressure force C is applied in the present case by a hydraulic cylinder, not shown, on the pressure plate 10, preferably made of sheet steel or plastic.
  • the bristle magazine 8 has arcuate guide walls 9 which are arched towards the center and form the magazine bottom 17.
  • the magazine bottom 17 forms part of the guide walls 9 of preferably drawn sheet steel.
  • the magazine bottom 17 can also be welded at its upper ends to the guide walls 9.
  • the transition 23 of the magazine bottom 17 in the guide wall 9 is smooth polished designed to form no obstacle to the transport of the filaments 11. This is further enhanced by the guide wall 9 tapers uniformly in the region of the transition 23 to the discharge opening 13, so that at the discharge opening, the thickness of the guide wall 9 is very thin and therefore virtually no stage and thus a congestion of the filaments 4 can arise ,
  • the bristle magazine 8 can also be made in one piece as a deep-drawn part.
  • the magazine bottom 17 of the bristle magazine 8 is substantially cup-shaped and has at its lowest point a discharge opening 13, which runs at a very small distance from the upper edge 16 of the bristle gripper 14 in order not to lose any filaments 11 when passing the bristle gripper 14.
  • the discharge opening 13 in this case has an outlet cross-section, which is dimensioned so large that thereby formed in the bristle gripper 14 receiving spaces 15 are fully filled when driving past with filaments 11.
  • the size of the receiving spaces 15 correspond to the desired bristle tufts size.
  • the discharge opening 13 may be formed adjustable in the present embodiment, so that different bristle tufts sizes with the same magazine, but with a different bristle gripper 14, can be generated.
  • the adjustment mechanism (not shown) can be formed in the present case, characterized in that the magazine bottom 17 is formed of displaceable metal sheets, which release a larger or smaller gap opening through which correspondingly more or less filaments 11 could emerge from the bristle magazine 8.
  • the bristle gripper 14 is arranged perpendicular to the longitudinal axis 20 of the bristle magazine 8.
  • the bristle gripper 14 is essentially constructed of a rectangular solid material having on its upper side 16 one or more groove-shaped and successively arranged receiving spaces 15 for receiving filaments 11, which, when the receiving spaces 15 are completely filled with these, form loose bristle tufts 19 ,
  • the receiving space (s) 15 run parallel to the filaments 11 arranged in the feed chute (18) which, in turn, are perpendicular to the plane of the drawing or, in other words, perpendicular to the longitudinal axis 20 of the feed chute 18.
  • the bristle gripper 14 may also be formed in a circular arc, so that this instead of a reciprocating motion performs a rotational movement and thereby receives in its receiving space 15 many filaments 11 to form individual bristle tufts 19 (not shown).
  • the pressure plate 10 is removed to load the bristle magazine 8 with bristles or filaments 11 pre-cut length.
  • the discharge opening 13 which may also be circular arc-shaped, covered by the horizontally extending in Fig. 1 flat top 16 of the bristle gripper 14, so that during the Auf colllvorgangs no bristles can escape from the bristle magazine 8, as shown in Fig. 1st is shown.
  • the pressure plate 10 is again, like a movable magazine cover, placed and connected to a hydraulic lever of a hydraulic cylinder (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)

Claims (5)

  1. Dispositif pour fabriquer des articles de brosserie, en particulier des brosses à dents, avec un magasin de poils (8), qui comprend un puits d'alimentation (18) délimité par des parois de guidage (9) pour recevoir des filaments (11) coupés à longueur, serrés les uns contre les autres et orientés parallèlement aux parois de guidage (9), dans lequel le puits d'alimentation (18) présente une ouverture de sortie (13), qui est limitée par un attrape-poils (14) fermant par l'extérieur l'ouverture de sortie (13) et par laquelle des filaments (11) sont fournis à un espace de réception (15) formé dans l'attrape-poils (14), dans lequel l'espace de réception (15) n'accepte qu'une certaine quantité de filaments (11), les rassemble en touffes (19) qui sont alors envoyées à d'autres stations en vue de leur traitement ultérieur, caractérisé en ce que les parois de guidage (9) du puits d'alimentation (18) présentent des segments en forme d'arc (17) s'amincissant en direction de l'ouverture de sortie (13).
  2. Dispositif selon la revendication 1, caractérisé en ce que les segments en forme d'arc (17) forment le fond de magasin du puits d'alimentation (18) et ont une section longitudinale essentiellement en forme de cercle ou de parabole.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'ouverture de sortie (13) est disposée au centre du puits d'alimentation (18) et en ce que les segments en forme d'arc (17) sont symétriques par rapport à l'axe longitudinal (20) du puits d'alimentation (18).
  4. Dispositif selon la revendication 1, caractérisé en ce que l'ouverture de sortie (13) est formée d'une part selon la grosseur des touffes (19) à saisir par l'attrape-poils (14) et d'autre part au point le plus bas du magasin de poils (8).
  5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que l'ouverture de sortie (13) présente une section d'ouverture variable.
EP02018310A 2001-10-12 2002-08-14 Dispositif pour fabriquer des articles de brosserie, en particulier de brosses à dents Expired - Lifetime EP1302129B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10150576 2001-10-12
DE10150576A DE10150576A1 (de) 2001-10-12 2001-10-12 Vorrichtung zum Herstellen von Bürstenwaren, insbesondere Zahnbürsten

Publications (2)

Publication Number Publication Date
EP1302129A1 EP1302129A1 (fr) 2003-04-16
EP1302129B1 true EP1302129B1 (fr) 2007-09-19

Family

ID=7702389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02018310A Expired - Lifetime EP1302129B1 (fr) 2001-10-12 2002-08-14 Dispositif pour fabriquer des articles de brosserie, en particulier de brosses à dents

Country Status (4)

Country Link
US (1) US6880896B2 (fr)
EP (1) EP1302129B1 (fr)
AT (1) ATE373430T1 (fr)
DE (2) DE10150576A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017101044U1 (de) * 2017-02-24 2018-05-25 Zahoransky Ag Entnahmevorrichtung und Bürstenherstellungsmaschine mit einer solchen
DE102017104887B4 (de) * 2017-03-08 2020-11-12 Zahoransky Ag Verfahren zur Entnahme von Borstenbündeln aus einem Borstenvorrat, Entnahmevorrichtung und Bürstenherstellungsmaschine mit einer Entnahmevorrichtung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US340184A (en) * 1886-04-20 Leonard young
DE86012C (fr) *
US521630A (en) * 1894-06-19 Brush-machine
US1070861A (en) * 1913-01-13 1913-08-19 Anthony Vanderveld Bristle-bed for brush-machines.
DE1028969B (de) * 1955-09-03 1958-04-30 Zahoransky Anton Fa Verfahren und Vorrichtung zum Zufuehren von Borstenbuendeln bei Buersten-Herstellungsmaschinen
US3367719A (en) * 1966-06-27 1968-02-06 Carlson Tool & Machine Co Bristle magazine for brushmaking machine
DE1938937A1 (de) * 1969-07-31 1971-02-11 Zahoransky Anton Fa Verfahren und Vorrichtung zum Herstellen von Buersten mit mindestens zwei Borstensorten
DE2632328C2 (de) * 1976-07-17 1986-08-28 Zahoransky, Anton, 7868 Todtnau Verfahren zum Herstellen von Bürsten sowie Bürstenherstellungsmaschine zur Durchführung des Verfahrens
DE2911668A1 (de) * 1979-03-24 1980-09-25 Boucherie Nv G B Doppelfasermagazin fuer buerstenherstellungsmaschinen
BE902770A (nl) * 1985-06-28 1985-12-30 Boucherie Nv G B Inrichting voor de vezeltoevoer aan een vulwerktuig van een borstelvervaardigingsmachine.
DE19734615A1 (de) * 1997-08-09 1998-09-24 Braun Ag Verfahren und Vorrichtung zur Herstellung eines eine Mehrzahl von Borstenbüscheln aufweisenden Borstenträgers insbesondere einer Zahnbürste
DE29715117U1 (de) * 1997-08-22 1998-12-24 G.B. Boucherie N.V., Izegem Vorrichtung zur Entnahme von einzelnen Faserbündeln aus Faserkästen einer Bürstenherstellungsmaschine
BE1011547A3 (nl) * 1997-11-14 1999-10-05 Boucherie Nv G B Inrichting voor het toevoeren van vezels aan een vulwerktuig bij een borstelvervaardigingsmachine.
DE19808883C1 (de) * 1998-03-03 1999-10-07 Woehler Tech Buersten Maschine Abteiler, insbesondere zur Separierung von Besatzmaterial zur Herstellung von Bürsten, wie z. B. Streifenbürsten
EP0972464B9 (fr) * 1998-07-14 2009-03-25 Firma G.B. BOUCHERIE, naamloze vennootschap Procédé de fabrication de brosses et machine de fabrication de brosses pour l'application de ce procédé

Also Published As

Publication number Publication date
EP1302129A1 (fr) 2003-04-16
DE10150576A1 (de) 2003-04-30
US6880896B2 (en) 2005-04-19
DE50210915D1 (de) 2007-10-31
US20030071512A1 (en) 2003-04-17
ATE373430T1 (de) 2007-10-15

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