EP1476043A1 - Clamping device and method for holding bunches of filaments - Google Patents

Clamping device and method for holding bunches of filaments

Info

Publication number
EP1476043A1
EP1476043A1 EP02806856A EP02806856A EP1476043A1 EP 1476043 A1 EP1476043 A1 EP 1476043A1 EP 02806856 A EP02806856 A EP 02806856A EP 02806856 A EP02806856 A EP 02806856A EP 1476043 A1 EP1476043 A1 EP 1476043A1
Authority
EP
European Patent Office
Prior art keywords
filament
clamping device
movable clamping
tufts
holding
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
EP02806856A
Other languages
German (de)
French (fr)
Other versions
EP1476043B1 (en
Inventor
Michael Vankov
Bernd Stein
Christian Stief
Michael Machlitt
Uwe Tretrop
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 EP1476043A1 publication Critical patent/EP1476043A1/en
Application granted granted Critical
Publication of EP1476043B1 publication Critical patent/EP1476043B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A46B3/08—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by clamping
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A46B9/045—Arranged like in or for toothbrushes specially adapted for cleaning a plurality of tooth surfaces simultaneously
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/04—Preparing bristles
    • 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
    • A46D3/047—Machines for inserting or fixing bristles in bodies for clamping or gluing bristles into rings, e.g. paint brushes, brooms

Definitions

  • the present invention relates to a clamping device according to the preamble of claim 1 and a method for holding filament tufts according to claim 8.
  • US 4,979,782 describes a method and an apparatus for producing bristle goods made of plastic.
  • the bristleware has a bristle carrier and bristles, the ends of which are shaped to be misshapen, while the attachment ends of the bristles are attached to the bristle side of the bristle carrier.
  • the bristles are clamped in a clamping device, while the ends of the bristles are in a flat plane. Then the ends of the bristles are rounded uniformly while they are clamped in the flat plane.
  • the clamp holding the bristles is then released, and then the use ends of the bristles are axially displaced relative to each other. As a result, the desired outer contour of the bristles is achieved.
  • DE 40 06 325 A1 describes a method for processing the bristles of a brush, in which the bristles are clamped at a distance from the ends on the use side, cut at the desired dimensions, and then by means of a flat grinding surface arranged perpendicular to the bristle extension, all of whose points on circular paths same diameter are moved, processed. To adjust the pressure, the grinding surface is moved towards the bristles and to influence the processing result, the bristles are laterally supported between their clamping and their ends on the user side in a variable, but always the same distance from the grinding surface for all bristles.
  • EP 0 567 672 B1 describes a method for producing toothbrushes with special profiles of the tufts inserted into the head of the brush body. With this method, the finishing step of trimming and rounding the bristle ends on the use side can be omitted if fibers which have already been rounded are introduced.
  • the tufts of bristles are introduced into through holes in through holes before being connected to the bristle carrier, which are arranged in a pattern which corresponds to that of the holes in the bristle carrier.
  • Each hole of the clamping device is connected to a clamping element. The ends of the bristles stand up over both sides of the clamp.
  • a pressure part with a profiled side is moved forward into engagement with the protruding ends of the bristles in order to press the bristles axially into the through holes.
  • the two ends of the bristles are aligned in parallel surfaces, the shape of which corresponds to profiled sides.
  • the clamp members are then actuated to hold the bristles in the clamp frame while the ends are in alignment.
  • the base ends of the bristles are then inserted into the holes of the bristle holder.
  • WO 01/91607 A2 describes a clamping device for retaining filament tufts of different sizes, in which a movable clamping element is guided between two fixed clamping elements. The filament tufts run through through openings of the clamping elements, which are aligned when not in use.
  • the object of the present invention is to provide an improved device and an improved method for holding filament tufts which avoids the disadvantages of the prior art. Furthermore, the invention is intended in particular to avoid the range of fluctuation in the filament tuft diameters, as occurs in full-area clamping according to the conventional methods.
  • a clamping device has the features of claim 1.
  • the division into a plurality of movable clamping elements causes a different displacement of the movable clamping elements of the clamping device to take place with different tuft sizes.
  • the clamping force exerted on the different tufts of bristles in the individual segments of the bristle field formed by the tufts of filaments can be optimized.
  • this prevents tufts from falling out which would not be adequately held due to their small size, and on the other hand prevents a clamping device designed in this way from damaging or shearing off filaments of larger tufts which are too tightly gripped in conventional clamping devices from the prior art to prevent smaller tufts from falling out.
  • a plurality of such clamping devices can be used side by side or one behind the other in a brush manufacturing machine.
  • the solution according to the invention is particularly suitable for brush manufacturing machines with a material store in which the bristle material is provided on material rolls, that is to say so-called “spool feeding systems”.
  • Another advantageous development of the clamping device according to the invention according to claim 1 provides the features of claim 4. This can be done, for example, by means of movable clamping elements that slide against one another and slide on one another.
  • each movable clamping element clamps only a part, ie only a certain segment, of the entire bristle field. All segments together then form the entire bristle field.
  • only filament tufts run through the respective movable clamping elements, which are actually held by this movable clamping element.
  • An advantageous embodiment of the clamping device according to the invention provides the features of claim 5. By dividing the clamping force over a large number of segments, the clamping forces exerted on the filament tuft can be fine-tuned. Furthermore, complicated bristle fields with different tuft sizes can be clamped with a consistently high product quality.
  • clamping device provides the features of claim 6. This makes it possible to act on the clamping device at one point, for example by means of pneumatic pressure. Alternatively, an electromagnetic or hydraulic pressurization is also possible, the latter being less suitable due to the risk of oil leakage and the low working speed. Alternatively, however, several pressure plates per clamping device are also possible. The respective movable clamping elements can then be controlled individually and separately from one another.
  • clamping device provides the features of claim 7.
  • Compression springs made of metal or plastic or components made of elastomeric plastic are used as spring-damper elements. In this way, for example, a metered, damped transmission of the centrally introduced pressure force to the respective clamping elements is possible. Furthermore, the spring-damper elements bring about an additional pushing back of the pressure plate as soon as the applied pressure force is removed.
  • the method according to the invention for holding filament tufts by means of a clamping device with fixed and at least two movable clamping elements has the following steps: feeding filament tufts of different tuft sizes from a spool-feeding system into the clamping device.
  • the supplied material can, for example, be unwound from one or more rolls.
  • Clamping the filament tuft with the clamping force required for the respective tuft size by moving the movable clamping elements relative to the fixed clamping elements, at least two segments being generated in the bristle field formed by the filament tuft.
  • the clamping force is defined on the one hand by the tuft size and on the other hand by the maximum permissible clamping force to avoid filament damage.
  • Performing an optional processing step Transfer of the filament tuft and loosening the clamping elements.
  • the bristle tufts can already be arranged in the shape desired for a bristle field, for example on the brush head of a toothbrush. All process steps run fully automatically and at high speed. By dividing the tuft of filaments gripped by the clamping device into two or more segments, a safe process sequence with a consistently high product quality is made possible. It is advantageous that the clamping device has as many segments as possible for complicated bristle fields.
  • the spring-damper elements can be designed, for example, as compression springs made of metal or plastic or as corresponding spring-elastic rubber elements. By selecting the desired spring stiffness, an additional setting option is offered in addition to the setting of the pressure force on the pressure plate.
  • 1a shows a schematic sectional view of a first embodiment of a clamping device according to the invention in the unattended state
  • 1b shows a schematic sectional view of the first embodiment according to FIG. 1 in the actuated state
  • FIG. 2a-2b show a schematic illustration of a bristle field produced by means of a clamping device according to FIG. 1;
  • 3a -3b is a schematic sectional view of a second embodiment of a clamping device according to the invention.
  • FIG. 4a-4b show a schematic sectional view in the direction of arrow A along the section line III-III of the clamping device from FIG. 2;
  • Fig. 5 is a schematic representation of a by means of a clamping device
  • Fig. 3 produced bristle field.
  • FIG. 1 a and 1 b show a schematic sectional view of a first advantageous embodiment of a clamping device 1 according to the invention for holding filament tufts 2, 3, 4 according to the present invention.
  • the clamping device 1 has a plurality of fixed clamping elements 17 arranged one behind the other in the filament longitudinal direction,
  • the fixed clamping elements 17, 18, 19, 20 each have horizontal through openings 7 in the plane of the drawing for receiving a first filament tuft 2, a second filament tuft 3 and a third filament tuft 4.
  • the second filament tuft 3 and the third filament tuft 4 are a first movable one Clamping element 8, a second movable clamping element 9 and a third movable clamping element 10 are arranged one behind the other in the fixed clamping elements 17, 18, 19, 20.
  • the movable clamping elements 8, 9, 10 are essentially designed as rectangular metal plates.
  • the first movable clamping element 8, the second movable clamping element 9 and the third movable clamping element 10 are arranged one behind the other in the spaces formed as guide surfaces 14 between the fixed clamping elements 17, 18, 19, 20.
  • the movable clamping elements 8, 9, 10 each have a spring-damper element 6 made in the present exemplary embodiment from elastomer plastic.
  • the spring-damper elements 6 are each arranged in the drawing plane in FIG. 1 at the upper end of the movable clamping elements 8, 9, 10 and protrude beyond the upper edge of the fixed clamping elements 17, 18, 19, 20.
  • the spring-damper elements 6 form the connection to a pressure plate 5.
  • the pressure plate 5 is made of the same material as the movable clamping elements 8, 9, 10, that is to say of machined metal.
  • the pressure plate 5 is essentially designed as a rectangular surface which extends into the plane of the drawing and which is subjected to a compressive force from a pneumatic piston (not shown).
  • the pressure plate 5 On its underside, the pressure plate 5 has projections which extend into the plane of the drawing and which are connected to the spring-damper elements 6.
  • the first movable clamping element 8, the second movable clamping element 9 and the third movable clamping element 10 each have two horizontal wide through openings 12 and one horizontal narrow through opening 13 in the present exemplary embodiment. 1a, the through openings 7 of the fixed clamping elements 17, 18, 19, 20 are arranged in alignment with the through openings 12, 13 of the movable clamping elements 8, 9, 10. The through openings 12, 13 are larger than or equal to the through openings 7.
  • the narrow through opening 13 of the first movable clamping element 8 is provided for the first filament tuft 2.
  • the narrow through opening 13 of the second movable clamping element 9 is provided for the second filament tuft 3.
  • the narrow through opening 13 of the third movable clamping element 10 is provided for the third filament tuft 4. If, as shown in FIG.
  • a force is applied in the direction of arrow F to the pressure plate 5 of the clamping device 1, the first movable clamping element 8, the second movable clamping element 9 and the third movable clamping element 10 move in the direction of the arrow F in the drawing , ie down.
  • the first filament tuft 2 which runs through the narrow through opening 13 of the movable clamping element 8, is displaced downward and clamped.
  • the spring-damper element 6 arranged between the first movable clamping element 8 and the pressure plate 5 is simultaneously compressed by the resistance of the first filament tuft 2.
  • the second filament tuft 3 and the third filament tuft 4, which also pass through the first movable clamping element 8, are not influenced by the vertical displacement of the first movable clamping element 8, since they each pass through wide through openings 12, the diameter of which corresponds at least to the maximum displacement path of the movable clamping element 8.
  • the second movable clamping element 9 By moving the second movable clamping element 9 downward in the drawing, the second filament tuft 3, which runs through the narrow through opening 13 of the second movable clamping element 9, is moved downward and clamped. In this process, the elastomeric spring-damper element 6 arranged between the second movable clamping element 9 and pressure plate 5 is simultaneously compressed by the resistance from the second filament tuft 3.
  • the first and third filament tufts 2, 4, which also pass through the second movable clamping element 9, are not influenced by the vertical displacement of the second movable clamping element 9, since they each pass through wide through openings 12, the diameter of which is selected such that even with maximum displacement of the second movable clamping element 9 no contact with the respective filament tufts 2, 4 takes place.
  • the third movable clamping element 10 acts in the same way as in the first movable clamping element 8 and in the second movable clamping element 9.
  • the third filament tuft 4 is clamped, while the first filament tuft 2 and the second filament tuft 3 due to the wide through openings 12 in the third movable clamping element 10 are not clamped.
  • the movable clamping elements 8, 9, 10 project downward when the filament tufts 2, 3, 4 are clamped the fixed clamping elements 17, 18, 19, 20 out, that is, the movable clamping elements 8, 9, 10 protrude from the guide surfaces 14.
  • the ends of the filament tufts 2, 3, 4 protruding in the clamping device 1 via the outer fixed clamping elements 17, 20 can be processed in the desired manner, for example by rounding, cutting to length or fusing.
  • the bristle field can then be transferred to an intermediate magazine.
  • the clamping device 1 is then relaxed, that is to say the movable clamping elements 8, 9, 10 are moved back into their starting position and the clamping on the filament tufts 2, 3, 4 is thereby released.
  • the clamping device 1 is relaxed by retracting the pressure plate 5.
  • the movable clamping elements 8, 9, 10 if necessary due to different filament tuft thicknesses or due to special filaments introduced into the respective filament tufts 2, 3, 4 with different thicknesses and / or elasticity, cause the spring-damper elements 6 to deflect differently and different emigration of the movable clamping elements 8, 9, 10 can cause.
  • the three movable clamping elements 8, 9, 10 shown in the exemplary embodiment can thus be displaced independently of one another and, due to their hole geometry, each influence a different part of the bristle field, as a result of which the present exemplary embodiment is divided into three segments.
  • FIGS. 2a and 2b show a bristle field with three segments A, B and C, as can be generated by the clamping device 1 according to FIG. 1 by way of example.
  • Figures 3a and 3b show a schematic sectional view of a second advantageous embodiment of a clamping device 1 according to the invention for holding filament tufts 2, 16 according to the present invention.
  • the clamping device 1 has a first movable clamping element 8, a second movable clamping element 9 and a third movable clamping element 10, which are arranged horizontally displaceably in the drawing.
  • the three movable clamping elements 8, 9, 10 slide directly one above the other on sliding surfaces 15, that is to say the movable clamping elements 8, 9, 10 are arranged parallel to one another in the longitudinal direction of the filament.
  • the bristle field is divided into three segments by the clamping device 1 according to the second embodiment.
  • the three movable clamping elements 8, 9, 10 are each provided on one side with a spring-damper element 6.
  • the pressure plate 5 is vertical in the drawing, i.e. perpendicular to the spring damper elements 6, arranged.
  • the pressure plate 5 is made of machined metal.
  • the movable clamping elements 8, 9, 10, as shown in FIG. 3b for the actuated state are moved towards each other in the direction of arrow D and E by the pressure plates 5 of the clamping device 1.
  • the upper first movable clamping element 8 and the lower third movable clamping element 10 move parallel to one another in the direction of arrow E from right to left.
  • the middle second movable clamping element 9 moves in the opposite direction, ie from left to right in the direction of arrow D.
  • Different filament tuft thicknesses or introduced special filaments with different thickness and / or elasticity also cause the spring-damper elements 6 (not shown) to deflect differently in the second embodiment of the clamping device 1.
  • Figures 4a and 4b show sectional views in the direction of arrow A along the section line III - III of the embodiment according to Figures 3a and 3b.
  • the fixed clamping elements 11 are visible, between which the movable clamping elements 8, 9, 10 are slidably received. Furthermore, the fixed clamping elements 11 have speaking through openings 7 for receiving the filament tuft 2, 16, in the sectional view of FIG. 4, the first filament tuft 2 can be seen.
  • the first movable clamping element 8 By moving the pressure plate 5 in the direction of arrow E (see FIG. 4b), the first movable clamping element 8 is moved to the left and the spring-damper element 6 is compressed. The first filament tuft 2 is thereby clamped and can be processed in the desired manner, for example. The same applies to the filament tufts 16 not visible in this illustration.
  • the bristle field thus clamped can be cut to length, machined and transferred to an intermediate magazine. Clamping with a plurality of movable clamping elements 8, 9, 10 divides the bristle field into several segments, as can be seen by way of example from the illustration in FIG. The three segments A ', B' and C are indicated therein. This prevents unwanted slipping out of filament tufts of different tuft sizes, as is evident in FIG. 5 for the first filament tuft 2 and the filament tufts 16. In addition, damage or shearing of the filament tufts 2, 16 is prevented by the division into segments in the present exemplary embodiment.

Abstract

A clamping device for restraining filament tufts in a bristle cluster includes fixed and movable clamping plates. The clamping plates have apertures that are aligned in the unloaded position and that are offset relative to each other in the loaded position. The movable clamping plates can be displaced relative to the fixed clamping plates, and each movable clamping plate secures a specific portion of the bristle cluster.

Description

Klemmvorrichtung und Verfahren zum Festhalten von FilamentbuschelnClamping device and method for holding filament tufts
Die vorliegende Erfindung betrifft eine Klemmvorrichtung gemäß dem Oberbegriff des Patentanspruchs 1 und ein Verfahren zum Festhalten von Filamentbuscheln nach Patentanspruch 8.The present invention relates to a clamping device according to the preamble of claim 1 and a method for holding filament tufts according to claim 8.
Aus dem Stand der Technik sind eine Vielzahl von derartigen Verfahren und Vorrichtungen bekannt. So beschreibt beispielsweise die US 4,979,782 ein Verfahren und eine Vorrichtung zur Herstellung von Borstenware aus Kunststoff. Die Borstenware weist dabei einen Borstenträger und Borsten auf, deren Gebrauchsenden unförmig gerundet sind, während die Befestigungsenden der Borsten an der Borstenseite des Borstenträgers befestigt sind. Bei der Herstellung werden die Borsten in einer Klemmvorrichtung geklemmt, während die Gebrauchsenden der Borsten in einer flachen Ebene sind. Dann werden die Gebrauchsenden der Borsten gleichförmig abgerundet, während sie in der flachen Ebene geklemmt sind. Anschließend wird die Klemme gelöst, die die Borsten zurückhält, und danach werden die Gebrauchsenden der Borsten relativ zueinander axial versetzt. Hierdurch wird die gewünschte Außenkontur der Borsten erzielt.A large number of such methods and devices are known from the prior art. For example, US 4,979,782 describes a method and an apparatus for producing bristle goods made of plastic. The bristleware has a bristle carrier and bristles, the ends of which are shaped to be misshapen, while the attachment ends of the bristles are attached to the bristle side of the bristle carrier. During manufacture, the bristles are clamped in a clamping device, while the ends of the bristles are in a flat plane. Then the ends of the bristles are rounded uniformly while they are clamped in the flat plane. The clamp holding the bristles is then released, and then the use ends of the bristles are axially displaced relative to each other. As a result, the desired outer contour of the bristles is achieved.
Die DE 40 06 325 A1 beschreibt ein Verfahren zum Bearbeiten von Borsten einer Bürste, bei dem die Borsten mit Abstand von den nutzungsseitigen Enden eingespannt, an diesen auf Wunschmaß geschnitten und anschließend mittels einer zur Borstenerstreckung senkrecht angeordneten, ebenen Schleiffläche, deren sämtliche Punkte auf Kreisbahnen gleichen Durchmessers bewegt werden, bearbeitet werden. Zur Einstellung des Andrucks wird die Schleiffläche in Richtung auf die Borsten zugestellt und zur Beeinflussung des Bearbeitungsergebnisses werden die Borsten zwischen ihrer Einspannung und ihren nutzungsseitigen Enden in veränderbarem, für alle Borsten jedoch stets gleichem Abstand von der Schleiffläche seitlich abgestützt.DE 40 06 325 A1 describes a method for processing the bristles of a brush, in which the bristles are clamped at a distance from the ends on the use side, cut at the desired dimensions, and then by means of a flat grinding surface arranged perpendicular to the bristle extension, all of whose points on circular paths same diameter are moved, processed. To adjust the pressure, the grinding surface is moved towards the bristles and to influence the processing result, the bristles are laterally supported between their clamping and their ends on the user side in a variable, but always the same distance from the grinding surface for all bristles.
Die EP 0 567 672 B1 beschreibt ein Verfahren zum Herstellen von Zahnbürsten mit speziellen Profilen der in den Kopf des Bürstenkörpers eingesetzten Büschel. Bei diesem Verfahren kann der Endbearbeitungsschritt des Beschneidens und Verrundens der gebrauchsseitigen Borstenenden entfallen, wenn bereits verrundete Fasern eingebracht werden. Zu diesem Zweck werden die Borstenbüschel vor dem Verbinden mit dem Borstenträger in Durchgangslöcher eine Klemmvorrichtung eingebracht, die in einem Muster angeordnet sind, welches demjenigen der Löcher des Borstenträgers entspricht. Dabei steht jedes Loch der Klemmvorrichtung mit einem Klemmelement in Verbindung. Die Enden der Borsten stehen über beide Seiten der Klemmvorrichtung hervor. Wenn sich die Klemmelemente der Klemmvorrichtung in einem gelösten Zustand befinden, wird ein Druckteil mit einer profilierten Seite nach vorne in Eingriff mit den hervorstehenden Enden der Borsten bewegt, um die Borsten axial in die Durchgangslöcher hinein zu drücken. Dadurch werden die beiden Enden der Borsten in parallelen Flächen ausgerichtet, deren Gestalt profilierten Seiten entspricht. Dann werden die Klemmelemente betätigt, um die Borsten in dem Klemmrahmen zu halten, während sich die Enden in ausgerichtetem Zustand befinden. Die Basisenden der Borsten werden dann in die Löcher des Borstenhalters eingebracht.EP 0 567 672 B1 describes a method for producing toothbrushes with special profiles of the tufts inserted into the head of the brush body. With this method, the finishing step of trimming and rounding the bristle ends on the use side can be omitted if fibers which have already been rounded are introduced. For this purpose, the tufts of bristles are introduced into through holes in through holes before being connected to the bristle carrier, which are arranged in a pattern which corresponds to that of the holes in the bristle carrier. Each hole of the clamping device is connected to a clamping element. The ends of the bristles stand up over both sides of the clamp. When the clamping elements of the clamping device are in a released state, a pressure part with a profiled side is moved forward into engagement with the protruding ends of the bristles in order to press the bristles axially into the through holes. As a result, the two ends of the bristles are aligned in parallel surfaces, the shape of which corresponds to profiled sides. The clamp members are then actuated to hold the bristles in the clamp frame while the ends are in alignment. The base ends of the bristles are then inserted into the holes of the bristle holder.
Schließlich beschreibt die WO 01/91607 A2 eine Klemmvorrichtung zum Zurückhalten von Filamentbuscheln verschiedener Größe, bei der ein bewegliches Klemmelement zwischen zwei feststehenden Klemmelementen geführt wird. Die Filamentbuschel laufen dabei durch im unbetatigten Zustand fluchtende Durchgangsöffnungen der Klemmelemente hindurch.Finally, WO 01/91607 A2 describes a clamping device for retaining filament tufts of different sizes, in which a movable clamping element is guided between two fixed clamping elements. The filament tufts run through through openings of the clamping elements, which are aligned when not in use.
Alle bekannte Vorschubeinheiten in sogenannten „Spool-Feeding-Anlagen" weisen den Nachteil auf, daß bei der Büschelbildung aus Einzelfilamenten zwangsläufig größere Abweichungen im Büschelumfang und im Büscheldurchmesser entstehen. Diese können durch das Spannen mittels bekannter Spanntechniken nicht kompensiert werden. Die maximal einstellbare Klemmkraft wird vielmehr durch den größten „Tuf bestimmt, d.h. durch das größte Borstenbüschel. Ein stärkeres Komprimieren der Tufts führt zu Beschädigungen an den Filamenten. Dies hat zur Folge, daß kleinere Tufts schlechter geklemmt werden und aus der Klemme herausrutschen können. Dieses Problem wird aufgrund der unterschiedlichen Komprimierbarkeit bei variabler Tuftgröße noch verstärkt.All known feed units in so-called "spool-feeding systems" have the disadvantage that larger tufts in the tuft circumference and tuft diameter inevitably arise when forming tufts from individual filaments. These tensions cannot be compensated for by tensioning using known tensioning techniques. The maximum adjustable clamping force becomes Rather determined by the largest "tuf", ie by the largest tufts of bristles. A stronger compression of the tufts leads to damage to the filaments. This has the consequence that smaller tufts are clamped more poorly and can slip out of the clamp. This problem is caused by the different Compressibility with variable tuft size increased.
Aufgabe der vorliegenden Erfindung ist es, eine verbesserte Vorrichtung und ein verbessertes Verfahren zum Festhalten von Filamentbuscheln zur Verfügung zu stellen, welche die Nachteile des Standes der Technik vermeidet. Ferner soll durch die Erfindung insbesondere die Schwankungsbreite der Filamentbüscheldurchmesser, wie sie bei der vollflächigen Klemmung gemäß den herkömmlichen Verfahren auftritt, vermieden werden.The object of the present invention is to provide an improved device and an improved method for holding filament tufts which avoids the disadvantages of the prior art. Furthermore, the invention is intended in particular to avoid the range of fluctuation in the filament tuft diameters, as occurs in full-area clamping according to the conventional methods.
Diese Aufgabe wird erfindungsgemäß durch eine Klemmvorrichtung mit den Merkmalen des Patentanspruchs 1 und ein Verfahren zum Festhalten von Filamentbuscheln mit den Merkmalen des Patentanspruchs 8 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung werden in den Unteransprüchen beschrieben. Durch die vorliegende Erfindung werden die Nachteile des Standes der Technik überwunden. Insbesondere wird ein ungewolltes Herausrutschen von Filamentbuscheln aus der Fi- lamentzuführvorrichtung durch ungenügende Klemmung aufgrund unterschiedlicher Tuftgrößen vermieden. Außerdem reduziert sich hierdurch die Schwankungsbreite der einzelnen Filamentbüscheldurchmesser. Ferner wird eine Beschädigung der Filamente aufgrund zu hoher Klemmkraft wirksam vermieden.This object is achieved by a clamping device with the features of claim 1 and a method for holding filament tufts with the features of claim 8. Advantageous refinements and developments of the invention are described in the subclaims. The disadvantages of the prior art are overcome by the present invention. In particular, unwanted slipping of filament tufts out of the filament feed device due to insufficient clamping due to different tuft sizes is avoided. This also reduces the fluctuation range of the individual filament tuft diameters. Furthermore, damage to the filaments due to excessive clamping force is effectively avoided.
Eine erfindungsgemäße Klemmvorrichtung weist die Merkmale des Patentanspruchs 1 auf. Dabei bewirkt die Aufteilung in mehrere bewegliche Klemmelemente, daß bei unterschiedlichen Tuftgrößen eine unterschiedliche Verschiebung der beweglichen Klemmelemente der Klemmvorrichtung erfolgt. Hierdurch kann die jeweils auf die unterschiedlichen Borstenbüschel ausgeübte Klemmkraft in den einzelnen Segmenten des durch die Filamentbuschel gebildeten Borstenfeldes optimiert werden. Dies Verhindert zum einen das Herausfallen von Tufts, die aufgrund ihrer geringen Größe nicht ausreichend gehalten würden, und zum anderen Verhindert eine derart ausgestaltete Klemmvorrichtung das Beschädigen oder Abscheren von Filamenten größerer Tufts, die bei herkömmlichen Klemmvorrichtungen vom Stand der Technik zu fest gefaßt werden, um ein Herausfallen kleinerer Tufts zu verhindern. In einer Bürstenherstellungsmaschine können mehrere derartige Klemmvorrichtungen nebeneinander oder hintereinander zum Einsatz kommen. Die erfindungsgemäße Lösung ist insbesondere für Bürstenherstellungsmaschinen mit einem Materialspeicher, in dem das Borstenmaterial auf Materialrollen bereitgestellt wird, das heißt so genannte „Spool-Feeding- Anlagen", geeignet.A clamping device according to the invention has the features of claim 1. The division into a plurality of movable clamping elements causes a different displacement of the movable clamping elements of the clamping device to take place with different tuft sizes. In this way, the clamping force exerted on the different tufts of bristles in the individual segments of the bristle field formed by the tufts of filaments can be optimized. On the one hand, this prevents tufts from falling out which would not be adequately held due to their small size, and on the other hand prevents a clamping device designed in this way from damaging or shearing off filaments of larger tufts which are too tightly gripped in conventional clamping devices from the prior art to prevent smaller tufts from falling out. A plurality of such clamping devices can be used side by side or one behind the other in a brush manufacturing machine. The solution according to the invention is particularly suitable for brush manufacturing machines with a material store in which the bristle material is provided on material rolls, that is to say so-called “spool feeding systems”.
Eine vorteilhafte Weiterbildung der erfindungsgemäßen Klemmvorrichtung nach Patentanspruch 1 sieht die Merkmale des Patentanspruchs 2 vor. Beispielsweise kann dies durch hintereinander angeordnete bewegliche Klemmelemente in einem Feststehendes Klemmelement erfolgen.An advantageous development of the clamping device according to the invention according to claim 1 provides the features of claim 2. For example, this can be done by moving clamping elements arranged one behind the other in a fixed clamping element.
Eine andere vorteilhafte Weiterbildung der erfindungsgemäßen Klemmvorrichtung nach Patentanspruch 1 sieht die Merkmale des Patentanspruchs 3 vor. Dadurch wird bewirkt, daß nur die engen Durchgangsöffnungen eine Klemmwirkung auf die darin geführten Filamentbuschel entfalten, während die durch die weiten Durchgangsöffnungen geführten Filamentbuschel nicht geklemmt werden. Auf diese Weise wird erreicht, daß jedes bewegliche Klemmelement nur einen Teil, das heißt nur ein bestimmtes Segment, des gesamten Borstenfeldes klemmt. Alle Segmente zusammen ergeben dann das gesamte Borstenfeld. Eine andere vorteilhafte Weiterbildung der erfindungsgemäßen Klemmvorrichtung nach Patentanspruch 1 sieht die Merkmale des Patentanspruchs 4 vor. Dies kann beispielsweise durch gegeneinander verschiebbare aufeinander gleitende bewegliche Klemmelemente erfolgen. Auf diese Weise wird eine Alternative Möglichkeit geschaffen, daß jedes bewegliche Klemmelement nur einen Teil, das heißt nur ein bestimmtes Segment, des gesamten Borstenfeldes klemmt. Alle Segmente zusammen ergeben dann das gesamte Borstenfeld. Im Gegensatz zur ersten Ausführungsform gemäß Patentanspruch 2 und 3 laufen hier nur Filamentbuschel durch die jeweiligen beweglichen Klemmelemente, die auch tatsächlich von diesem beweglichen Klemmelement festgehalten werden.Another advantageous development of the clamping device according to the invention according to claim 1 provides the features of claim 3. This has the effect that only the narrow through openings develop a clamping effect on the filament tufts guided therein, while the filament tufts guided through the wide through openings are not clamped. In this way it is achieved that each movable clamping element clamps only a part, that is to say only a certain segment, of the entire bristle field. All segments together then form the entire bristle field. Another advantageous development of the clamping device according to the invention according to claim 1 provides the features of claim 4. This can be done, for example, by means of movable clamping elements that slide against one another and slide on one another. In this way, an alternative possibility is created that each movable clamping element clamps only a part, ie only a certain segment, of the entire bristle field. All segments together then form the entire bristle field. In contrast to the first embodiment according to claim 2 and 3 here only filament tufts run through the respective movable clamping elements, which are actually held by this movable clamping element.
Eine vorteilhafte Ausbildungsform der erfindungsgemäßen Klemmvorrichtung sieht die Merkmale des Patentanspruchs 5 vor. Durch die Aufteilung der Klemmkraft auf eine Vielzahl von Segmenten, kann eine sehr feine Abstimmung der auf die Filamentbuschel ausgeübten Klemmkräfte erfolgen. Ferner können komplizierte Borstenfelder mit unterschiedlichsten Tuftgröße mit gleichbleibend hoher Produktqualität geklemmt werden.An advantageous embodiment of the clamping device according to the invention provides the features of claim 5. By dividing the clamping force over a large number of segments, the clamping forces exerted on the filament tuft can be fine-tuned. Furthermore, complicated bristle fields with different tuft sizes can be clamped with a consistently high product quality.
Eine weitere vorteilhafte Ausbildungsform der erfindungsgemäßen Klemmvorrichtung sieht die Merkmale des Patentanspruchs 6 vor. Hierdurch ist es möglich die Klemmvorrichtung an einem Punkt, beispielsweise mittels pneumatischen Druck, zu beaufschlagen. Alternativ ist auch eine elektromagnetische oder hydraulische Druckbeaufschlagung möglich, wobei letztere wegen der Gefahr von Olleckagen und der niedrigen Arbeitsgeschwindigkeit weniger geeignet ist. Alternativ sind aber auch mehrere Andruckplatten pro Klemmvorrichtung möglich. Dabei können dann die jeweiligen beweglichen Klemmelemente individuell und getrennt voneinander angesteuert werden.Another advantageous embodiment of the clamping device according to the invention provides the features of claim 6. This makes it possible to act on the clamping device at one point, for example by means of pneumatic pressure. Alternatively, an electromagnetic or hydraulic pressurization is also possible, the latter being less suitable due to the risk of oil leakage and the low working speed. Alternatively, however, several pressure plates per clamping device are also possible. The respective movable clamping elements can then be controlled individually and separately from one another.
Noch eine weitere vorteilhafte Ausführungsform der erfindungsgemäßen Klemmvorrichtung sieht die Merkmale des Patentanspruchs 7 vor. Als Feder-Dämpfer-Elemente kommen dabei beispielsweise Druckfedern aus Metall oder Kunststoff oder Bauteile aus elastomerem Kunststoff zur Anwendung. Hierdurch wird beispielsweise eine dosierte, gedämpfte Weiterleitung der zentral eingeleiteten Druckkraft an die jeweiligen Klemmelemente möglich. Ferner bewirken die Feder-Dämpfer-Elemente ein zusätzliches Zurückschieben der Andruckplatte, sobald die aufgebrachte Druckkraft wegfällt.Yet another advantageous embodiment of the clamping device according to the invention provides the features of claim 7. Compression springs made of metal or plastic or components made of elastomeric plastic are used as spring-damper elements. In this way, for example, a metered, damped transmission of the centrally introduced pressure force to the respective clamping elements is possible. Furthermore, the spring-damper elements bring about an additional pushing back of the pressure plate as soon as the applied pressure force is removed.
Das erfindungsgemäße Verfahren zum Festhalten von Filamentbuscheln mittels einer Klemmvorrichtung mit feststehenden und mindestens zwei beweglichen Klemmelementen, weist dabei folgende Schritte auf: Zuführen von Filamentbuscheln unterschiedlicher Tuftgrö- ße aus einer Spool-Feeding-Anlage in die Klemmvorrichtung. Dabei kann das zugeführte Material beispielsweise von einer oder mehreren Rollen abgewickelt werden. Klemmen der Filamentbuschel mit der für die jeweilige Tuftgröße erforderlichen Klemmkraft durch Verschieben der beweglichen Klemmelemente relativ zu den feststehenden Klemmelementen, wobei mindestens zwei Segmente in dem durch die Filamentbuschel gebildeten Borstenfeld erzeugt werden. Dabei wird die Klemmkraft einerseits durch die Tuftgröße und andererseits von der maximal zulässigen Klemmkraft zur Vermeidung von Filamentbeschädigung definiert. Durchführen eines optionalen Bearbeitungsschritts; Übergabe der Filamentbuschel und Lösen der Klemmelemente.The method according to the invention for holding filament tufts by means of a clamping device with fixed and at least two movable clamping elements has the following steps: feeding filament tufts of different tuft sizes from a spool-feeding system into the clamping device. In this case, the supplied material can, for example, be unwound from one or more rolls. Clamping the filament tuft with the clamping force required for the respective tuft size by moving the movable clamping elements relative to the fixed clamping elements, at least two segments being generated in the bristle field formed by the filament tuft. The clamping force is defined on the one hand by the tuft size and on the other hand by the maximum permissible clamping force to avoid filament damage. Performing an optional processing step; Transfer of the filament tuft and loosening the clamping elements.
Die Borstenbüschel können dabei bereits in der für ein Borstenfeld, beispielsweise auf dem Bürstenkopf einer Zahnbürste, gewünschten Form angeordnet sein. Sämtliche Verfahrensschritte laufen vollautomatisch und mit hoher Geschwindigkeit ab. Durch die Unterteilung des von der Klemmvorrichtung erfaßten Filamentbüschels in zwei oder mehrere Segmente wird ein sicherer Verfahrensablauf mit gleichbleibend hoher Produktqualität ermöglicht. Dabei ist es vorteilhaft, daß die Klemmvorrichtung bei komplizierten Borstenfeldern möglichst viele Segmente aufweist.The bristle tufts can already be arranged in the shape desired for a bristle field, for example on the brush head of a toothbrush. All process steps run fully automatically and at high speed. By dividing the tuft of filaments gripped by the clamping device into two or more segments, a safe process sequence with a consistently high product quality is made possible. It is advantageous that the clamping device has as many segments as possible for complicated bristle fields.
Eine vorteilhafte Weiterbildung des erfindungsgemäßen Verfahrens sieht die Merkmale des Patentanspruchs 9 vor. Hierdurch wird eine einfache Möglichkeit zur Anpassung der An- druckkraft auf die jeweilige Tuftgröße in den einzelnen Segmenten vorgestellt. Dabei können die Feder-Dämpfer-Elemente beispielsweise als Druckfedern aus Metall oder Kunststoff oder als entsprechende federelastische Gummielemente ausgebildet sein. Durch die Auswahl der gewünschten Federsteif ig keit wird neben der Einstellung der Druckkraft auf die Andruckplatte eine zusätzliche Einstellmöglichkeit geboten.An advantageous development of the method according to the invention provides the features of patent claim 9. This provides a simple way of adapting the contact pressure to the respective tuft size in the individual segments. The spring-damper elements can be designed, for example, as compression springs made of metal or plastic or as corresponding spring-elastic rubber elements. By selecting the desired spring stiffness, an additional setting option is offered in addition to the setting of the pressure force on the pressure plate.
Schließlich sieht noch eine weitere vorteilhafte Weiterbildung des erfindungsgemäßen Verfahrens die Merkmale des Patentanspruchs 10 vor. Hier wird ein möglicher optionaler Bearbeitungsschritt gezeigt. Es sind aber auch andere Bearbeitungsschritte, mehrere Bearbeitungsschritte oder kein Bearbeitungsschritt möglich.Finally, a further advantageous development of the method according to the invention provides the features of patent claim 10. A possible optional processing step is shown here. However, other processing steps, multiple processing steps or no processing step are also possible.
Weitere Ausgestaltungen und Vorteile der Erfindung werden im folgenden mit Bezug auf die beigefügten Zeichnungen beschrieben. Darin zeigen:Further refinements and advantages of the invention are described below with reference to the accompanying drawings. In it show:
Fig. 1a eine schematische Schnittansicht einer ersten Ausführungsform einer erfindungsgemäßen Klemmvorrichtung im unbetatigten Zustand; Fig. 1b eine schematische Schnittansicht der ersten Ausführungsform gemäß Fig. 1 im betätigten Zustand;1a shows a schematic sectional view of a first embodiment of a clamping device according to the invention in the unattended state; 1b shows a schematic sectional view of the first embodiment according to FIG. 1 in the actuated state;
Fig. 2a -2b eine schematische Darstellung eines mittels einer Klemmvorrichtung nach Fig. 1 hergestellten Borstenfeides;2a-2b show a schematic illustration of a bristle field produced by means of a clamping device according to FIG. 1;
Fig. 3a -3b eine schematische Schnittansicht einer zweiten Ausführungsform einer erfindungsgemäßen Klemmvorrichtung;3a -3b is a schematic sectional view of a second embodiment of a clamping device according to the invention;
Fig. 4a - 4b eine schematische Schnittansicht in Pfeilrichtung A entlang der Schnittlinie III - III der Klemmvorrichtung aus Fig. 2;4a-4b show a schematic sectional view in the direction of arrow A along the section line III-III of the clamping device from FIG. 2;
Fig. 5 eine schematische Darstellung eines mittels einer Klemmvorrichtung nachFig. 5 is a schematic representation of a by means of a clamping device
Fig. 3 hergestellten Borstenfeldes.Fig. 3 produced bristle field.
Nachfolgend werden zwei vorteilhafte Ausführungsformen der vorliegenden Erfindung anhand der beigefügten Zeichnungen Beschrieben. Dabei werden gleiche oder ähnliche Bauteile mit gleichen Bezugszeichen bezeichnet.Two advantageous embodiments of the present invention are described below with reference to the accompanying drawings. The same or similar components are designated with the same reference numerals.
Fig. 1 a und Fig. 1 b zeigen eine schematische Schnittansicht einer ersten vorteilhaften Ausführungsform einer erfindungsgemäßen Klemmvorrichtung 1 zum Festhalten von Filamentbuscheln 2, 3, 4 gemäß der vorliegenden Erfindung. Die Klemmvorrichtung 1 weist dabei in Filamentlängsrichtung mehrere hintereinander angeordnete feststehende Klemmelement 17,1 a and 1 b show a schematic sectional view of a first advantageous embodiment of a clamping device 1 according to the invention for holding filament tufts 2, 3, 4 according to the present invention. The clamping device 1 has a plurality of fixed clamping elements 17 arranged one behind the other in the filament longitudinal direction,
18, 19, 20 auf, das heißt die beweglichen Klemmelemente 8, 9, 10 sind in mehreren Ebenen hintereinander angeordnet. Die feststehenden Klemmelemente 17, 18, 19, 20 weisen jeweils in der Zeichnungsebene horizontale Durchgangsöffnungen 7 zur Aufnahme eines ersten Filamentbüschels 2, eines zweiten Filamentbüschels 3 und eines dritten Filamentbüschels 4 auf. Dabei sind die Durchgangsöffnungen 7 in den feststehenden Klemmelementen 17, 18,18, 19, 20, that is to say the movable clamping elements 8, 9, 10 are arranged one behind the other in several planes. The fixed clamping elements 17, 18, 19, 20 each have horizontal through openings 7 in the plane of the drawing for receiving a first filament tuft 2, a second filament tuft 3 and a third filament tuft 4. The through openings 7 in the fixed clamping elements 17, 18,
19, 20 im vorliegenden Ausführungsbeispiel bereits derart angeordnet, daß sie ein gewünschtes Borstenfeld auf einem Zahnburstenkopf ergeben, wie in Fig. 2a und in Fig. 2b gezeigt.19, 20 in the present exemplary embodiment have already been arranged such that they produce a desired bristle field on a toothbrush head, as shown in FIG. 2a and in FIG. 2b.
Senkrecht zu den horizontalen Durchgangsöffnungen 7 und somit auch senkrecht zur Längsachse des aus polymeren Kunstfasern bestehenden ersten Filamentbuschel 2, des zweiten Filamentbüschels 3 und des dritten Filamentbüschels 4, sind ein erstes bewegliches Klemmelement 8, ein zweites bewegliches Klemmelement 9 und ein drittes bewegliches Klemmelement 10 in den feststehenden Klemmelementen 17, 18, 19, 20 hintereinander angeordnet. Die beweglichen Klemmelemente 8, 9 10 sind dabei im wesentlichen als rechtek- kige Metallplatten ausgebildet. Das erste bewegliche Klemmelement 8, das zweite bewegliche Klemmelement 9 und das dritte bewegliche Klemmelement 10 sind dabei in dem als Führungsflächen 14 ausgebildeten Zwischenräumen zwischen den feststehenden Klemmelementen 17, 18, 19, 20 längsverschieblich hintereinander angeordnet.Perpendicular to the horizontal through openings 7 and thus also perpendicular to the longitudinal axis of the first filament tuft 2 consisting of polymer synthetic fibers, the second filament tuft 3 and the third filament tuft 4 are a first movable one Clamping element 8, a second movable clamping element 9 and a third movable clamping element 10 are arranged one behind the other in the fixed clamping elements 17, 18, 19, 20. The movable clamping elements 8, 9, 10 are essentially designed as rectangular metal plates. The first movable clamping element 8, the second movable clamping element 9 and the third movable clamping element 10 are arranged one behind the other in the spaces formed as guide surfaces 14 between the fixed clamping elements 17, 18, 19, 20.
Die beweglichen Klemmelemente 8, 9, 10 weisen jeweils ein im vorliegenden Ausführungsbeispiel aus elastomerem Kunststoff hergestelltes Feder-Dämpfer-Element 6 auf. Dabei sind die Feder-Dämpfer-Elemente 6 jeweils in der Zeichnungsebene in Fig. 1 am oberen Ende der beweglichen Klemmelemente 8, 9, 10 angeordnet und stehen über den oberen Rand der feststehenden Klemmelemente 17, 18, 19, 20 hervor. Die Feder-Dämpfer-Elemente 6 bilden im vorliegenden Ausführungsbeispiel die Verbindung zu einer Andruckplatte 5.The movable clamping elements 8, 9, 10 each have a spring-damper element 6 made in the present exemplary embodiment from elastomer plastic. The spring-damper elements 6 are each arranged in the drawing plane in FIG. 1 at the upper end of the movable clamping elements 8, 9, 10 and protrude beyond the upper edge of the fixed clamping elements 17, 18, 19, 20. In the present exemplary embodiment, the spring-damper elements 6 form the connection to a pressure plate 5.
Die Andruckplatte 5 ist im vorliegenden Ausführungsbeispiel aus dem gleichen Material wie die beweglichen Klemmelemente 8, 9, 10 hergestellt, das heißt aus spanend bearbeitetem Metall. Die Andruckplatte 5 ist im wesentlichen als rechteckige sich in die Zeichnungsebene erstreckende Fläche ausgebildet, die von einem nicht dargestellten Pneumatikkolben mit einer Druckkraft beaufschlagt wird. An ihrer Unterseite weist die Andruckplatte 5 sich in die Zeichnungsebene hinein erstreckende Vorsprünge auf, die mit den Feder-Dämpfer- Elementen 6 verbunden sind.In the present exemplary embodiment, the pressure plate 5 is made of the same material as the movable clamping elements 8, 9, 10, that is to say of machined metal. The pressure plate 5 is essentially designed as a rectangular surface which extends into the plane of the drawing and which is subjected to a compressive force from a pneumatic piston (not shown). On its underside, the pressure plate 5 has projections which extend into the plane of the drawing and which are connected to the spring-damper elements 6.
Ferner weisen das erste bewegliche Klemmelement 8, das zweite bewegliche Klemmelement 9 und das dritte bewegliche Klemmelement 10 im vorliegenden Ausführungsbeispiel je zwei horizontale weite Durchgangsöffnungen 12 und je eine horizontale enge Durchgangsöffnung 13 auf. Im unbetatigten Zustand der Klemmvorrichtung 1 gemäß Fig. 1a sind die Durchgangsöffnungen 7 der feststehenden Klemmelemente 17, 18, 19, 20 fluchtend zu den Durchgangsöffnungen 12, 13 der beweglichen Klemmelemente 8, 9, 10 angeordnet. Die Durchgangsöffnungen 12, 13 sind dabei größer oder gleich den Durchgangsöffnungen 7. Dabei ist die enge Durchgangsöffnung 13 des ersten beweglichen Klemmelements 8 für das erste Filamentbuschel 2 vorgesehen. Die enge Durchgangsöffnung 13 des zweiten beweglichen Klemmelements 9 ist für das zweite Filamentbuschel 3 vorgesehen. Schließlich ist die enge Durchgangsöffnung 13 des dritten beweglichen Klemmelements 10 für das dritte Filamentbuschel 4 vorgesehen. Wird nun, wie in Fig. 1b dargestellt, eine Kraft in Pfeilrichtung F auf die Andruckplatte 5 der Klemmvorrichtung 1 aufgebracht, so verschieben sich das erste bewegliche Klemmelement 8, das zweite bewegliche Klemmelement 9 und das dritte bewegliche Klemmelement 10 in der Zeichnung in Pfeilrichtung F, d.h. nach unten.Furthermore, the first movable clamping element 8, the second movable clamping element 9 and the third movable clamping element 10 each have two horizontal wide through openings 12 and one horizontal narrow through opening 13 in the present exemplary embodiment. 1a, the through openings 7 of the fixed clamping elements 17, 18, 19, 20 are arranged in alignment with the through openings 12, 13 of the movable clamping elements 8, 9, 10. The through openings 12, 13 are larger than or equal to the through openings 7. The narrow through opening 13 of the first movable clamping element 8 is provided for the first filament tuft 2. The narrow through opening 13 of the second movable clamping element 9 is provided for the second filament tuft 3. Finally, the narrow through opening 13 of the third movable clamping element 10 is provided for the third filament tuft 4. If, as shown in FIG. 1b, a force is applied in the direction of arrow F to the pressure plate 5 of the clamping device 1, the first movable clamping element 8, the second movable clamping element 9 and the third movable clamping element 10 move in the direction of the arrow F in the drawing , ie down.
Durch die vertikale Verschiebung des ersten beweglichen Klemmelements 8 wird das erste Filamentbuschel 2, welches durch die enge Durchgangsöffnung 13 des beweglichen Klemmelements 8 läuft, nach unten verschoben und eingeklemmt. Bei diesem Vorgang wird gleichzeitig durch den entgegengebrachten Widerstand des ersten Filamentbüschels 2 das zwischen erster Bewegliches Klemmelement 8 und Andruckplatte 5 angeordnete Feder- Dämpfer-Element 6 komprimiert. Das ebenfalls durch das erste bewegliche Klemmelement 8 hindurchlaufende zweite Filamentbuschel 3 und das dritte Filamentbuschel 4 werden durch die Vertikalverschiebung des ersten beweglichen Klemmelements 8 nicht beeinflußt, da sie jeweils durch weite Durchgangsöffnungen 12 hindurchlaufen, deren Durchmesser zumindest dem maximalen Verschiebeweg des beweglichen Klemmelements 8 entspricht.Due to the vertical displacement of the first movable clamping element 8, the first filament tuft 2, which runs through the narrow through opening 13 of the movable clamping element 8, is displaced downward and clamped. In this process, the spring-damper element 6 arranged between the first movable clamping element 8 and the pressure plate 5 is simultaneously compressed by the resistance of the first filament tuft 2. The second filament tuft 3 and the third filament tuft 4, which also pass through the first movable clamping element 8, are not influenced by the vertical displacement of the first movable clamping element 8, since they each pass through wide through openings 12, the diameter of which corresponds at least to the maximum displacement path of the movable clamping element 8.
Durch die Verschiebung des zweiten beweglichen Klemmelements 9 in der Zeichnung nach unten, wird das zweite Filamentbuschel 3, welches durch die enge Durchgangsöffnung 13 des zweiten beweglichen Klemmelements 9 läuft, nach unten verschoben und eingeklemmt. Bei diesem Vorgang wird gleichzeitig durch den vom zweiten Filamentbuschel 3 entgegengebrachten Widerstand das zwischen zweitem beweglichen Klemmelement 9 und Andruckplatte 5 angeordnete elastomere Feder-Dämpfer-Element 6 komprimiert. Die ebenfalls durch das zweite bewegliche Klemmelement 9 hindurchlaufenden ersten und dritten Filamentbuschel 2, 4, werden durch die Vertikalverschiebung des zweiten beweglichen Klemmelements 9 nicht beeinflußt, da sie jeweils durch weite Durchgangsöffnungen 12 hindurchlaufen, deren Durchmesser so gewählt ist, daß auch bei maximaler Verschiebung des zweiten beweglichen Klemmelements 9 keine Berührung mit den jeweiligen Filamentbuscheln 2, 4 stattfindet.By moving the second movable clamping element 9 downward in the drawing, the second filament tuft 3, which runs through the narrow through opening 13 of the second movable clamping element 9, is moved downward and clamped. In this process, the elastomeric spring-damper element 6 arranged between the second movable clamping element 9 and pressure plate 5 is simultaneously compressed by the resistance from the second filament tuft 3. The first and third filament tufts 2, 4, which also pass through the second movable clamping element 9, are not influenced by the vertical displacement of the second movable clamping element 9, since they each pass through wide through openings 12, the diameter of which is selected such that even with maximum displacement of the second movable clamping element 9 no contact with the respective filament tufts 2, 4 takes place.
In gleicher Weise, wie bei dem ersten beweglichen Klemmelement 8 und bei dem zweiten beweglichen Klemmelement 9, wirkt das dritte bewegliche Klemmelement 10. Dabei wird das dritte Filamentbuschel 4 geklemmt, während das erste Filamentbuschel 2 und das zweite Filamentbuschel 3 aufgrund der weiten Durchgangsöffnungen 12 in dem dritten beweglichen Klemmelement 10 nicht geklemmt werden. Wie Fig. 1b zu entnehmen ist, ragen die beweglichen Klemmelemente 8, 9, 10 bei Klemmung der Filamentbuschel 2, 3, 4 nach unten über die feststehenden Klemmelemente 17, 18, 19, 20 heraus, das heißt, die beweglichen Klemmelemente 8, 9, 10 stehen aus den Führungsflächen 14 hervor.The third movable clamping element 10 acts in the same way as in the first movable clamping element 8 and in the second movable clamping element 9. The third filament tuft 4 is clamped, while the first filament tuft 2 and the second filament tuft 3 due to the wide through openings 12 in the third movable clamping element 10 are not clamped. As can be seen in FIG. 1b, the movable clamping elements 8, 9, 10 project downward when the filament tufts 2, 3, 4 are clamped the fixed clamping elements 17, 18, 19, 20 out, that is, the movable clamping elements 8, 9, 10 protrude from the guide surfaces 14.
An dieser Stelle ist noch zu erwähnen, daß in Fig. 1 b der Eindruck erweckt wird, als wenn die Filamentbuschel 2, 3, 4 durch die Klemmelemente 8, 9, 10 abgeschert worden sind. Dies ist natürlich gar nicht der Fall. Die übertriebene Darstellung der Verschiebung der Klemmelemente 8, 9, 10 soll zeigen, daß hier diese quer zu den feststehenden Durchgangsöffnungen 7 verschoben werden und die Büschel 2, 3, 4 eingeklemmt sind. Die Verschiebung beträgt in Wirklichkeit nur einige Hundertstel Millimeter, d.h. die Durchgangsöffnungen 13 sind nur um Hundertstel Millimeter versetzt zu den Durchgangsöffnungen 7 angeordnet, was bereits schon zur Klemmung der Büschel führt.At this point it should also be mentioned that in Fig. 1 b the impression is given as if the filament tufts 2, 3, 4 have been sheared off by the clamping elements 8, 9, 10. Of course, this is not the case. The exaggerated representation of the displacement of the clamping elements 8, 9, 10 is to show that here they are moved transversely to the fixed through openings 7 and the tufts 2, 3, 4 are clamped. The shift is actually only a few hundredths of a millimeter, i.e. the through openings 13 are only offset by hundredths of a millimeter from the through openings 7, which already leads to the clamping of the tufts.
Im geklemmten Zustand können die in der Klemmvorrichtung 1 über die äußeren feststehenden Klemmelemente 17, 20 überstehenden Enden der Filamentbuschel 2, 3, 4 in der gewünschten Weise, beispielsweise durch Verrunden, Ablängen oder Verschmelzen, bearbeitet werden. Nach abgeschlossener Bearbeitung kann das Borstenfeld dann an ein Zwischenmagazin übergeben werden. Die Klemmvorrichtung 1 wird dann entspannt, das heißt, die beweglichen Klemmelemente 8, 9, 10 werden in ihre Ausgangsposition zurückgefahren und die Klemmung an den Filamentbuscheln 2, 3, 4 wird dadurch gelöst. Das Entspannen der Klemmvorrichtung 1 erfolgt im vorliegenden Ausführungsbeispiel durch das Zurückfahren der Andruckplatte 5.In the clamped state, the ends of the filament tufts 2, 3, 4 protruding in the clamping device 1 via the outer fixed clamping elements 17, 20 can be processed in the desired manner, for example by rounding, cutting to length or fusing. After processing has been completed, the bristle field can then be transferred to an intermediate magazine. The clamping device 1 is then relaxed, that is to say the movable clamping elements 8, 9, 10 are moved back into their starting position and the clamping on the filament tufts 2, 3, 4 is thereby released. In the present exemplary embodiment, the clamping device 1 is relaxed by retracting the pressure plate 5.
Ferner ist noch anzumerken, daß die beweglichen Klemmelemente 8, 9, 10 gegebenenfalls aufgrund unterschiedlicher Filamentbüscheldicken oder aufgrund von in die jeweiligen Filamentbuschel 2, 3, 4 eingebrachten Sonderfilamenten mit unterschiedlicher Dicke und/oder Elastizität, ein unterschiedliches Einfedern der Feder-Dämpfer-Elemente 6 und unterschiedliches Auswandern der beweglichen Klemmelemente 8, 9, 10 bewirken kann. Die im Ausführungsbeispiel gezeigten drei beweglichen Klemmelemente 8, 9, 10 sind also unabhängig voneinander verschieblich und beeinflussen aufgrund ihrer Lochgeometrie jeweils einen anderen Teil des Borstenfeldes, wodurch im vorliegenden Ausführungsbeispiel eine Aufteilung in drei Segmente gegeben ist.It should also be noted that the movable clamping elements 8, 9, 10, if necessary due to different filament tuft thicknesses or due to special filaments introduced into the respective filament tufts 2, 3, 4 with different thicknesses and / or elasticity, cause the spring-damper elements 6 to deflect differently and different emigration of the movable clamping elements 8, 9, 10 can cause. The three movable clamping elements 8, 9, 10 shown in the exemplary embodiment can thus be displaced independently of one another and, due to their hole geometry, each influence a different part of the bristle field, as a result of which the present exemplary embodiment is divided into three segments.
Die Segmentaufteilung ist auch den schematischen Darstellungen in Fig. 2a und 2b zu entnehmen. Darin ist ein Borstenfeld mit drei Segmenten A, B und C dargestellt, wie es beispielhaft von der Klemmvorrichtung 1 gemäß Fig. 1 erzeugt werden kann. Figuren 3a und 3b zeigen eine schematische Schnittansicht einer zweiten vorteilhaften Ausführungsform einer erfindungsgemäßen Klemmvorrichtung 1 zum Festhalten von Filamentbuscheln 2, 16 gemäß der vorliegenden Erfindung. Die Klemmvorrichtung 1 weist dabei ein erstes bewegliches Klemmelement 8, ein zweites bewegliches Klemmelement 9 und ein drittes bewegliches Klemmelement 10 auf, die in der Zeichnung horizontal verschieblich angeordnete sind. Im Gegensatz zum ersten Ausführungsbeispiel, gleiten die drei bewegliche Klemmelemente 8, 9, 10 direkt auf Gleitflächen 15 übereinander, das heißt, die beweglichen Klemmelemente 8, 9, 10 sind in Filamentlängsrichtung in einer Ebene parallel zueinander angeordnet. Durch die Klemmvorrichtung 1 gemäß der zweiten Ausführungsform wird das Borstenfeld in drei Segmente unterteilt.The segmentation can also be seen in the schematic representations in FIGS. 2a and 2b. This shows a bristle field with three segments A, B and C, as can be generated by the clamping device 1 according to FIG. 1 by way of example. Figures 3a and 3b show a schematic sectional view of a second advantageous embodiment of a clamping device 1 according to the invention for holding filament tufts 2, 16 according to the present invention. The clamping device 1 has a first movable clamping element 8, a second movable clamping element 9 and a third movable clamping element 10, which are arranged horizontally displaceably in the drawing. In contrast to the first exemplary embodiment, the three movable clamping elements 8, 9, 10 slide directly one above the other on sliding surfaces 15, that is to say the movable clamping elements 8, 9, 10 are arranged parallel to one another in the longitudinal direction of the filament. The bristle field is divided into three segments by the clamping device 1 according to the second embodiment.
Dabei sind die drei beweglichen Klemmelemente 8, 9, 10 jeweils an einer Seite mit einem Feder-Dämpfer-Element 6 versehen. Die Feder-Dämpfer-Elemente 6, die im vorliegenden Ausführungsbeispiel aus elastomerem Kunststoff hergestellt sind, sind an ihrem den beweglichen Klemmelementen 8, 9, 10 entgegengesetzten Ende mit einer Andruckplatte 5 verbunden. Die Andruckplatte 5 ist dabei in der Zeichnung vertikal, d.h. senkrecht zu den Feder- Dämpfer-Elementen 6, angeordnet. Die Andruckplatte 5 ist aus spanend bearbeitetem Metall hergestellt.The three movable clamping elements 8, 9, 10 are each provided on one side with a spring-damper element 6. The spring-damper elements 6, which in the present exemplary embodiment are made of elastomeric plastic, are connected to a pressure plate 5 at their end opposite the movable clamping elements 8, 9, 10. The pressure plate 5 is vertical in the drawing, i.e. perpendicular to the spring damper elements 6, arranged. The pressure plate 5 is made of machined metal.
Bei der erfindungsgemäßen Lösung gemäß der zweiten Ausführungsform, werden die beweglichen Klemmelemente 8, 9, 10, wie in Fig. 3b für den betätigten Zustand dargestellt, jeweils in Pfeilrichtung D und E durch die Andruckplatten 5 der Klemmvorrichtung 1 aufeinander zu bewegt. Dabei bewegen sich das obere erste bewegliche Klemmelement 8 und das untere dritte bewegliche Klemmelement 10 parallel zueinander in Pfeilrichtung E von rechts nach links. Das mittlere zweite bewegliche Klemmelement 9 bewegt sich in entgegengesetzter Richtung, das heißt von links nach rechts in Pfeilrichtung D. Je stärker die Feder- Dämpfer-Elemente 6 dabei komprimiert werden, desto größer wird die entsprechende Federkraft. Unterschiedliche Filamentbüscheldicken oder eingebrachte Sonderfilamente mit unterschiedlicher Dicke und/oder Elastizität bewirken auch bei der zweiten Ausführungsform der Klemmvorrichtung 1 unterschiedliches Einfedern der Feder-Dämpfer-Elemente 6 (nicht dargestellt).In the solution according to the invention according to the second embodiment, the movable clamping elements 8, 9, 10, as shown in FIG. 3b for the actuated state, are moved towards each other in the direction of arrow D and E by the pressure plates 5 of the clamping device 1. The upper first movable clamping element 8 and the lower third movable clamping element 10 move parallel to one another in the direction of arrow E from right to left. The middle second movable clamping element 9 moves in the opposite direction, ie from left to right in the direction of arrow D. The more the spring-damper elements 6 are compressed, the greater the corresponding spring force. Different filament tuft thicknesses or introduced special filaments with different thickness and / or elasticity also cause the spring-damper elements 6 (not shown) to deflect differently in the second embodiment of the clamping device 1.
Figuren 4a und 4b zeigen Schnittansichten in Pfeilrichtung A entlang der Schnittlinie III - III der Ausbildungsform nach Figuren 3a und 3b. In dieser Ansicht werden die feststehenden Klemmelemente 11 sichtbar, zwischen denen die beweglichen Klemmelemente 8, 9, 10 verschieblich aufgenommen sind. Ferner weisen die feststehenden Klemmelemente 11 ent- sprechende Durchgangsöffnungen 7 zur Aufnahme der Filamentbuschel 2, 16 auf, in der Schnittansicht nach Fig. 4 ist das erste Filamentbuschel 2 erkennbar.Figures 4a and 4b show sectional views in the direction of arrow A along the section line III - III of the embodiment according to Figures 3a and 3b. In this view, the fixed clamping elements 11 are visible, between which the movable clamping elements 8, 9, 10 are slidably received. Furthermore, the fixed clamping elements 11 have speaking through openings 7 for receiving the filament tuft 2, 16, in the sectional view of FIG. 4, the first filament tuft 2 can be seen.
Durch das Verschieben der Andruckplatte 5 in Pfeilrichtung E (siehe Fig. 4b), wird das erste bewegliche Klemmelement 8 nach links verschoben und das Feder-Dämpfer-Element 6 komprimiert. Das erste Filamentbuschel 2 wird dadurch geklemmt und kann beispielsweise in gewünschter Weise bearbeitet werden. Entsprechendes gilt für die in dieser Darstellung nicht sichtbaren Filamentbuschel 16.By moving the pressure plate 5 in the direction of arrow E (see FIG. 4b), the first movable clamping element 8 is moved to the left and the spring-damper element 6 is compressed. The first filament tuft 2 is thereby clamped and can be processed in the desired manner, for example. The same applies to the filament tufts 16 not visible in this illustration.
Das so geklemmte Borstenfeld kann abgelängt, bearbeitet und an ein Zwischenmagazin übergeben werden. Durch das Klemmen mit mehreren beweglichen Klemmelementen 8, 9, 10 wird das Borstenfeld in mehrere Segmente unterteilt, wie beispielhaft der Darstellung gemäß Fig. 5 zu entnehmen ist. Darin sind die drei Segmente A', B' und C angedeutet. Hierdurch wird ein ungewolltes Herausrutschen von Filamentbuscheln unterschiedlicher Tuftgröße, wie dies in Fig. 5 bei dem ersten Filamentbuschel 2 und den Filamentbuscheln 16 deutlich wird, vermieden. Außerdem wird ein Beschädigen oder Abscheren der Filamentbuschel 2, 16 durch die im vorliegenden Ausführungsbeispiel erfolgte Aufteilung in Segmente verhindert. The bristle field thus clamped can be cut to length, machined and transferred to an intermediate magazine. Clamping with a plurality of movable clamping elements 8, 9, 10 divides the bristle field into several segments, as can be seen by way of example from the illustration in FIG. The three segments A ', B' and C are indicated therein. This prevents unwanted slipping out of filament tufts of different tuft sizes, as is evident in FIG. 5 for the first filament tuft 2 and the filament tufts 16. In addition, damage or shearing of the filament tufts 2, 16 is prevented by the division into segments in the present exemplary embodiment.

Claims

Patentansprüche: claims:
1. Klemmvorrichtung (1) zum Festhalten einer Vielzahl von Filamentbuscheln (2, 3, 4; 2, 16) eines an einem Zahnburstenkopf anzubringenden Borstenfeldes, wobei die Klemmvorrichtung (1) feststehende und bewegliche Klemmelemente (8, 9, 10, 11, 17, 18, 19, 20) aufweist, die zum Hindurchführen der Filamentbuschel (2, 3, 4: 2, 16) durch die Klemmelementebenen jeweils Durchgangslöcher (7, 12, 13) aufweisen, die im unbetatigten Zustand der Klemmvorrichtung (1) fluchtend angeordnet sind und die im betätigten Zustand der Klemmvorrichtung (1) versetzt zueinander angeordnet sind, um die Filamentbuschel (2, 3, 4; 2, 16) quer zur Filamentlängsrichtung einzuklemmen und dadurch festzuhalten, dadurch gekennzeichnet, daß in der Klemmvorrichtung (1) mehrere bewegliche Klemmelemente (8, 9, 10) vorgesehen sind, die relativ zu den feststehenden Klemmelementen (11; 17, 18, 19, 20) verschiebbar sind, wobei jedes der beweglichen Klemmelemente (8, 9, 10) zum Festhalten jeweils eines anderen Teils des Borstenfeldes vorgesehen ist.1. Clamping device (1) for holding a plurality of filament tufts (2, 3, 4; 2, 16) of a bristle field to be attached to a toothbrush head, the clamping device (1) being fixed and movable clamping elements (8, 9, 10, 11, 17 , 18, 19, 20) which have through holes (7, 12, 13) for the passage of the filament tufts (2, 3, 4: 2, 16) through the clamping element planes, which are aligned when the clamping device (1) is not in use are and which are arranged offset to one another in the actuated state of the clamping device (1) in order to clamp the filament tufts (2, 3, 4; 2, 16) transversely to the filament longitudinal direction and thereby hold them, characterized in that in the clamping device (1) a plurality of movable Clamping elements (8, 9, 10) are provided which are displaceable relative to the fixed clamping elements (11; 17, 18, 19, 20), each of the movable clamping elements (8, 9, 10) for holding a different part of each Borst enfeldes is provided.
2. Klemmvorrichtung (1) zum Festhalten einer Vielzahl von Filamentbuscheln (2, 3, 4; 2, 16) nach Patentanspruch 1, dadurch gekennzeichnet, daß die beweglichen Klemmelemente (8, 9, 10) in Filamentlängsrichtung in mehreren2. Clamping device (1) for holding a plurality of filament tufts (2, 3, 4; 2, 16) according to claim 1, characterized in that the movable clamping elements (8, 9, 10) in the longitudinal direction of the filament in several
Ebenen hintereinander angeordnet sind.Layers are arranged one behind the other.
3. Klemmvorrichtung (1) zum Festhalten einer Vielzahl von Filamentbuscheln (2, 3, 4; 2, 16) nach Patentanspruch 2, dadurch gekennzeichnet, daß in den beweglichen Klemmelementen (8, 9, 10) jeweils enge Durchgangsöffnungen (12) vorgesehen sind.3. Clamping device (1) for holding a plurality of filament tufts (2, 3, 4; 2, 16) according to claim 2, characterized in that in each case narrow through openings (12) are provided in the movable clamping elements (8, 9, 10) ,
4. Klemmvorrichtung (1) zum Festhalten einer Vielzahl von Filamentbuscheln (2, 3, 4; 2, 16) nach Patentanspruch 1, dadurch gekennzeichnet, daß die beweglichen Klemmelemente (8, 9, 10) in Filamentlängsrichtung in einer Ebene parallel zueinander angeordent sind. 4. Clamping device (1) for holding a plurality of filament tufts (2, 3, 4; 2, 16) according to claim 1, characterized in that the movable clamping elements (8, 9, 10) are arranged parallel to one another in the longitudinal direction of the filament in one plane ,
5. Klemmvorrichtung (1) zum Festhalten einer Vielzahl von Filamentbuscheln (2, 3, 4; 2, 16) nach einem der vorangehenden Patentansprüche, dadurch gekennzeichnet, daß mehr als zwei, vorzugsweise drei bewegliche Klemmelemente (8, 9, 19) vorgesehen sind.5. clamping device (1) for holding a plurality of filament tufts (2, 3, 4; 2, 16) according to one of the preceding claims, characterized in that more than two, preferably three movable clamping elements (8, 9, 19) are provided ,
6. Klemmvorrichtung (1) zum Festhalten einer Vielzahl von Filamentbuscheln (2, 3, 4; 2, 16) nach einem der vorangehenden Patentansprüche, dadurch gekennzeichnet, daß zumindest eine Andruckplatte (5) vorgesehen ist, über die auf die beweglichen6. Clamping device (1) for holding a plurality of filament tufts (2, 3, 4; 2, 16) according to one of the preceding claims, characterized in that at least one pressure plate (5) is provided, via which on the movable
Klemmelemente (8, 9, 10) eine Kraft aufbringbar ist.Clamping elements (8, 9, 10) a force can be applied.
7. Klemmvorrichtung (1) zum Festhalten einer Vielzahl von Filamentbuscheln (2, 3, 4; 2, 16) nach einem der vorangehenden Patentansprüche, dadurch gekennzeichnet, daß die beweglichen Klemmelemente (8, 9, 10) über Feder-Dämpfer-Elemente (6) mit7. clamping device (1) for holding a plurality of filament tufts (2, 3, 4; 2, 16) according to one of the preceding claims, characterized in that the movable clamping elements (8, 9, 10) via spring-damper elements ( 6) with
Druck beaufschlagbar sind.Pressure can be applied.
8. Verfahren zum Festhalten von Filamentbuscheln mittels einer Klemmvorrichtung (1) mit feststehenden und mindestens zwei beweglichen Klemmelementen (8, 9, 10, 11, 17, 18, 19, 20), welches folgende Schritte aufweist:8. A method for holding filament tufts by means of a clamping device (1) with fixed and at least two movable clamping elements (8, 9, 10, 11, 17, 18, 19, 20), which comprises the following steps:
Zuführen von Filamentbuscheln (2, 3, 4; 16) unterschiedlicher Tuftgröße aus einer Spool-Feeding-Anlage in die Klemmvorrichtung (1);Feeding filament tufts (2, 3, 4; 16) of different tuft sizes from a spool-feeding system into the clamping device (1);
Klemmen der Filamentbuschel (2, 3, 4; 16) mit der für die jeweilige Tuftgröße erforderlichen Klemmkraft durch Verschieben der beweglichen Klemmelemente (8, 9, 10) relativ zu den feststehenden Klemmelementen (11; 17, 18, 19, 20), wobei mindestens zwei Segmente in dem durch die Filamentbuschel (2, 3, 4; 16) gebildeten Borstenfeld erzeugt werden;Clamping the filament tuft (2, 3, 4; 16) with the clamping force required for the respective tuft size by moving the movable clamping elements (8, 9, 10) relative to the fixed clamping elements (11; 17, 18, 19, 20), whereby at least two segments are generated in the bristle field formed by the filament tufts (2, 3, 4; 16);
Durchführen eines optionalen Bearbeitungsschritts; Übergabe der Filamentbuschel (2, 3, 4; 16) und Lösen der Klemmelemente (8, 9, 10).Performing an optional processing step; Transfer of the filament tuft (2, 3, 4; 16) and loosening the clamping elements (8, 9, 10).
9. Verfahren zum Festhalten von Filamentbuscheln nach Patentanspruch 8, wobei das Verfahren ferner folgende Schritte aufweist:9. A method for holding filament tufts according to claim 8, the method further comprising the following steps:
Anpassen der Andruckkraft an die jeweilige Tuftgröße über entsprechende Feder- Dämpfer-Elemente (6). Adjust the pressure force to the respective tuft size using the corresponding spring-damper elements (6).
0. Verfahren zum Festhalten von Filamentbuscheln nach Patentanspruch 8, wobei das Verfahren als optionalen Bearbeitungsschritt das Verrunden und / oder Ablängen der Filamentbuschel aufweist. 0. A method for holding filament tufts according to claim 8, wherein the method comprises rounding and / or cutting the filament tuft to length as an optional processing step.
EP02806856A 2002-02-20 2002-11-28 Clamping device and method for holding bunches of filaments Expired - Lifetime EP1476043B1 (en)

Applications Claiming Priority (3)

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DE10207019A DE10207019A1 (en) 2002-02-20 2002-02-20 Clamping device and method for holding filament tufts
DE10207019 2002-02-20
PCT/EP2002/013442 WO2003070050A1 (en) 2002-02-20 2002-11-28 Clamping device and method for holding bunches of filaments

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EP1476043B1 EP1476043B1 (en) 2007-08-01

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US (1) US6820941B2 (en)
EP (1) EP1476043B1 (en)
AT (1) ATE368398T1 (en)
AU (1) AU2002367691A1 (en)
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EP2676572B1 (en) 2012-06-19 2018-07-04 Braun GmbH Carrier for cleaning elements and method for using such carriers in the production of toothbrush heads

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FR1453829A (en) * 1965-03-05 1966-07-22 Method of manufacturing brushes and the like
US4635313A (en) * 1983-11-16 1987-01-13 North American Philips Corporation Brush with self retaining bristles
DE3820372C2 (en) 1988-06-15 1997-07-24 Coronet Werke Gmbh Method and device for producing bristle goods
DE4006325A1 (en) 1990-03-01 1991-09-05 Schlerf Coronet Werke Brush bristle active end processing - clamps bristle tufts at distance from active end, cuts them to size, and grinds active ends
DE4027108A1 (en) * 1990-08-28 1992-03-05 Schlerf Coronet Werke METHOD FOR CONNECTING BRUSH BRUSHES TO A PLASTIC BRUSH SUPPORT AND DEVICE THEREFOR
ES2076604T3 (en) 1992-04-28 1995-11-01 Boucherie Nv G B A METHOD OF PRODUCING TOOTHBRUSHES.
GB2287901B (en) * 1994-03-29 1998-05-06 Boucherie Nv G B A brush making machine
ES2177106T3 (en) * 1997-10-30 2002-12-01 Schlesinger Maschb Gmbh PROCEDURE AND DEVICE FOR THE MANUFACTURE OF PIG PRODUCTS.
US6439669B1 (en) 1999-08-31 2002-08-27 Gillette Canada Company Filament gripper
US6588851B1 (en) 2000-05-26 2003-07-08 Kenan Bible Clamp for retaining bristle bundles of various sizes

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Title
See references of WO03070050A1 *

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US20030155802A1 (en) 2003-08-21
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US6820941B2 (en) 2004-11-23
ATE368398T1 (en) 2007-08-15

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