EP2130454B1 - Procédé de fabrication de brosses à dents à poils non ancrés - Google Patents

Procédé de fabrication de brosses à dents à poils non ancrés Download PDF

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Publication number
EP2130454B1
EP2130454B1 EP08010409.4A EP08010409A EP2130454B1 EP 2130454 B1 EP2130454 B1 EP 2130454B1 EP 08010409 A EP08010409 A EP 08010409A EP 2130454 B1 EP2130454 B1 EP 2130454B1
Authority
EP
European Patent Office
Prior art keywords
bristles
bristle
tapered
plate
pin
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.)
Active
Application number
EP08010409.4A
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German (de)
English (en)
Other versions
EP2130454A1 (fr
Inventor
Jost Loetscher
Oskar Trevisan
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.)
Trisa Holding AG
Original Assignee
Trisa Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP08010409.4A priority Critical patent/EP2130454B1/fr
Application filed by Trisa Holding AG filed Critical Trisa Holding AG
Priority to EP12004612.3A priority patent/EP2526815B1/fr
Priority to CN201410002061.1A priority patent/CN103767313B/zh
Priority to US12/991,528 priority patent/US8534769B2/en
Priority to PCT/EP2009/003999 priority patent/WO2009146909A2/fr
Priority to CN200980121035.8A priority patent/CN102056507B/zh
Publication of EP2130454A1 publication Critical patent/EP2130454A1/fr
Priority to US13/952,017 priority patent/US9173480B2/en
Application granted granted Critical
Publication of EP2130454B1 publication Critical patent/EP2130454B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0276—Bristles having pointed ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body

Definitions

  • the present invention relates to a method for producing anchorless bristled toothbrushes, wherein a bristle bundle is inserted into an exception recess of a tool of a bristle machine and acted on by a guided in the receiving recess pin on the pin facing the end of the bristles of the bristle bundle to their orientation.
  • Brushing machines which operate according to this method are well known and are manufactured and sold, for example, by the company GB Boucherie NV, Izegem, Belgium, as so-called AFT machines (Anchor Free Tufting Machines).
  • a device for fixing bristle tufts provided with bristle tufts to brush bodies is for example in document DE 200 06 311 U1 disclosed.
  • bristle machine for making anchorless toothbrushes is off DE 10 2006 026 712 known. This combines the methods already mentioned above.
  • a bristle carrying plate provided with bristle tufts is inserted into a cavity of an injection mold into which plastic is then injected (IMT) for anchoring and forming the remaining part of the brush head.
  • bristle anchorage of the described methods is implemented differently, however, the preparation, processing and feeding of bristles can be the same or similar.
  • the known methods and the abovementioned known boron machines on which these methods are carried out are designed for the machining of cylindrical conventional bristles, ie bristles which have a constant circular-cylindrical cross-section over their length.
  • the edges resulting from the cutting of the conventional bristles from the thread-like starting material are rounded on the later user side of the bristles by mechanical processing in the bristle machine in order to prevent the injury, in particular of the gums, during the use of the toothbrush. Due to the mechanical processing, the corresponding end of the conventional bristles assumes an approximately hemispherical shape.
  • the known methods and the known boron machines are intended and designed for the processing of cylindrical conventional bristles. Recently, the need for toothbrushes with sharpened bristles has risen, because such bristles are suitable for a good cleaning effect of the teeth, especially for the cleaning of the interdental area, and protect the gums.
  • Another object of this invention is to provide a toothbrush with chemically sharpened bristles, the ends of which have a special taper.
  • the non-feasible processability of pointed bristles on AFT machines chemically sharpened bristles having a tapered to a tip portion and a subsequent, having a blunt end cylindrical portion, bundle manner in the receiving recess a tool or a pallet introduced that the pointed Bristles are in their full length in the receiving recess.
  • a pin is acted on the tips;
  • the sharpened bristles are thereby pushed through a funnel plate; so that a desired height profile of the bristle field can be achieved.
  • the tips of the sharpened bristles are additionally mechanically processed prior to insertion into the receiving recess.
  • the tips of the sharpened bristles are mechanically machined directly in the bristle machine to remove the etch threads.
  • This allows the use of chemically sharpened bristles as they are available in the market. It would also be possible to perform the mechanical processing of chemically sharpened bristles outside the bristle machine, and then to supply these prepared sharpened bristles to the bristle process without further processing.
  • the tips of the bristles are ground during the mechanical processing.
  • a grinding wheel may preferably be used.
  • lasers, chemical, other mechanical or thermal processes or combinations thereof are possible.
  • bristles are used whose pointed portion has at least a length of 5 mm.
  • the sharpened portion is longer and measures between 7 and 12 mm, in particular between 8 and 11 mm.
  • Such sharpened bristles ensure, with a good cleaning effect, a particularly gentle treatment of the gums and a good cleaning of the interdental spaces.
  • the sharpened bristles in contrast to the consistently cylindrical conventional bristles, are held or clamped at least approximately in the transition region from the cylindrical to the pointed section during the mechanical machining of the tips.
  • this holding the tapered bristles is preferably carried out by means of a rounding disc, or by means of the rounding plate associated elements of the Beborstungsmaschine and a cooperating pressure element.
  • pointed bristles according to the method according to the invention and cylindrical conventional bristles can be simultaneously processed and anchored in the same brush head.
  • the bristles are in separate feed channels for the sharpened Bristles and separate feed channels for the conventional bristles introduced into the machine.
  • the pointed bristles are held aligned in the machining of the tips by means of a cooperating with the blunt end of the pointed bristles stop plate. This ensures that the tips of all sharpened bristles are mechanically processed and can not escape.
  • the sliding fit between the tool and the pin is configured such that the tips of the mechanically processed sharpened bristles have a larger diameter than the tolerance range of the sliding fit.
  • the bristle bundle preferably produces a topography only after the mechanical processing of the bristles.
  • the pointed bristles are placed before the mechanical processing of the tips, directed with the tip down, in a feed of Beborstungsmaschine and pressed in the feed channel by means of a pusher in the direction against an outlet of the feed channel, said Pusher acts on the cylindrical portion of the sharpened bristles.
  • the adapted material channel serves as a feed channel.
  • the bristle machine can simultaneously have fabric channels for consistently cylindrical conventional bristles and adapted feed channels for sharpened bristles.
  • the sharpened bristles are held in the feed channel by means of a limiting plate cooperating with the blunt end of the bristles. This, together with the mated arrangement of the pusher acting on the cylindrical portion of the pointed bristles, prevents lifting of the pointed bristles away from the bottom of the feed channel.
  • a known Beborstungsmaschine is used as a limiting plate in a preferred manner, the knock plate, but this is shut down. The usual knocking motion during the processing of cylindrical conventional bristles thus remains.
  • a bristle carrying plate having at least one passage is arranged on the tool, and the sharpened bristles of the bristle bundle are so moved through the pin by means of the pin Passage pushed that the pointed bristles project with a blunt end end portion of the cylindrical portion on the upper side of the underside of the Bristestentragplättchens. These end portions of the bristles are then fused to secure the sharpened bristles to the bristle support plate.
  • a funnel plate can be arranged directly on the tool, on which the bristle carrier plate is arranged. The funnel plate has at least one guide passage for the sharpened bristles, wherein this, seen from the tool, can be formed like a funnel-like tapered. Alternatively, and less preferably, this step is omitted if no bristle support plate is integrated in the process (eg, IMT).
  • conventional bristles are introduced into a further receiving recess of the tool previously.
  • further pin is acted on the processed ends of the conventional bristles to their orientation.
  • the bundle of conventional bristles can be given a topography.
  • topography is meant, in the context of the present invention, a surface defined by the tips of the pointed bristles or the respective ends of the conventional bristles, which is three-dimensionally shaped or may be flat, but then does not run at right angles to the longitudinal direction of the bristle bundle concerned.
  • the tips of the sharpened bristles are less mechanically machined than the ends of the conventional bristles.
  • the method according to the invention also makes it possible to produce anchorless bristled toothbrushes in which a bristle tuft has both pointed bristles and conventional bristles.
  • the sharpened bristles can be inserted into a receiving recess and the conventional bristles in a further receiving recess of the tool.
  • these receiving recesses lie directly next to each other.
  • the bristles can be conducted, preferably by means of a funnel plate, to a common passage of the bristle carrying plate.
  • the bristle carrier plate is subsequently attached to the head of a toothbrush body, as is known.
  • bundles of sharpened bristles can also be fastened directly to the head of the toothbrush body by forming corresponding passages on the latter.
  • a known boron machine is preferably used, whereby, as indicated in the respective claims, it is designed or operated differently for the processing of sharpened bristles.
  • the inventive method is used in particular for the production of electric and manual toothbrushes.
  • the method can generally be used for brushed products with pointed filaments, in particular for brushware in the cosmetics, personal care and medical industries.
  • the toothbrush may also have continuous cylindrical conventional bristles and / or rubber-elastic cleaning elements made of soft material.
  • FIG. 1 is a possible bristle carrier plate 10 shown in a perspective view obliquely from above. From its top 12 to the bottom 14 extend a number of passages 16. These have in the example shown a kidney-shaped or oval cross-section. The passages may also have a circular or any other cross section. From the bottom 14 is in the direction towards below a ring-shaped Zentri mecanicswulst 18, which extends at a small distance from the side edge of the bristle carrier plate 10 along this and is preferably formed wedge-shaped tapering towards the free end. Directly adjacent to the centering bead 18, on the underside 14 of the bristle carrier plate 10, a circumferential and along the side edge extending welding edge 19 is attached.
  • the welding edge 19 can of course also be provided at any other location laterally or on the underside of the bristle carrier plate 10. In particular, it is also possible to attach the welding edge to the centering bead 18.
  • FIG. 2 shows in the same representation as FIG. 1 the bristle support plate 10, which is provided by means of an AFT method with a schematically indicated bristle facing 20.
  • the bristle facing 20 has a bristle bundle 22 per passage 16.
  • Each of the bristle bundles 22 consists of a plurality of bristles; These are described in detail below.
  • FIG. 3 shows a head portion 24 and a portion of a subsequent neck portion 26 of a toothbrush body 28.
  • the head area 24 is of his in the FIG. 3 upper side 30 ago provided with a recess 32 which corresponds to the shape of the bristle carrying plate 10 and is limited by a bottom 34 substantially.
  • the side wall of this recess 32 has a circumferential shoulder, which forms a welding shoulder 35.
  • the back 36 of the toothbrush body 28 is located on the opposite side of the front 30 and is lying in the view shown below.
  • FIG. 4 shows the bristle carrier plate 10 provided with the bristle stock 20 inserted into the recess 32. The insertion is facilitated by the Zentri mecanicswulst 18.
  • the upper side 12 of the bristle carrier plate 10 is preferably aligned with the front side 30 of the toothbrush body 28.
  • the bristle carrier plate 10 is firmly connected to the toothbrush body 28, preferably by means of ultrasonic welding. In this case, a weld is performed in the region of the welding edge 19 and the welding paragraph 35.
  • the bristle facing 20 projects beyond the top 12.
  • FIG. 4 thus shows the head area and part of the neck area of a toothbrush 28 '.
  • other methods of bristle or bristle anchor anchoring can be used at this point (see, for example, method described further above).
  • the bristle carrier plate 10 is preferably made of a hard plastic, for example polypropylene PP), polyamide (PA), polyester (PET), polycyclohexanedimethanoltherastalate (PCT / PCT-A (acid-modified) / PCT-G (glycol-modified)), Polyethylene (PE), polystyrene (PS), styrene-acrylonitrile (SAN), polymethyl methacrylate (PMMA), acrylic buthadiene styrene (ABS), polyoxymethylene (POM), etc.
  • Polypropylene (PP) is preferably used with an E-modulus of 1000-2400 N / mm 2 , preferably 1300-1800 N / mm 2 .
  • the head portion 24 and the neck portion 26 of the toothbrush body 28 is made of one of these hard plastics.
  • the bristle carrier plate 10 and the toothbrush body 28 of the same hard plastic at least in the contact region of the two parts used.
  • both the bristle carrier plate 10 and the toothbrush body 28 can be produced in a multi-component injection molding process.
  • both the bristle carrying plate 10 and the toothbrush body 28 can each be constructed from one or more hard plastics and / or one or more soft plastics.
  • Low-density polyethylene (PE-LD), high-density polyethylene (PE-HD), polyethylene (PE), rubber-elastic material such as polyurethane (PUR), thermoplastic elastomer (TPE), etc. are particularly suitable as soft plastics.
  • the Shore A hardness of the soft plastic is preferably below 90.
  • the passages 16 are preferably arranged in hard plastic.
  • the soft plastics can be used both for the shaping of additional soft elastic cleaning elements on the bristle carrier plate 10 or on the head portion 24 are used or attached to the toothbrush body for functional or decorative purposes.
  • Chemically sharpened bristles 40 as in FIG. 5 are generally known and available on the market. They are preferably made of polyester, possible subgroups are polybutylene terephthalate (PBT) or polytrimethylene terephthalate (PTT). Polyamide (PA) is preferably used if the bristles are sharpened in another way, for example mechanically or thermally. In particular by chemical means, by etching, pointed bristles 40 may have at their tip 42 an extremely thin etching thread or residual thread 44, the mass of at least in one dimension less than 0.04 mm, often smaller 0.025 mm and usually less than 0.015 mm.
  • PBT polybutylene terephthalate
  • PTT polytrimethylene terephthalate
  • PA polyamide
  • pointed bristles 40 may have at their tip 42 an extremely thin etching thread or residual thread 44, the mass of at least in one dimension less than 0.04 mm, often smaller 0.025 mm and usually less than 0.015 mm.
  • the length of the pointed bristles 40 for use in a bristle machine is preferably between 14 mm and 20 mm, preferably 16-18 mm, more preferably 17 mm, with the bristles 40 tapered on one side and a blunt end on the side remote from the tip 42 46 have.
  • the in the FIG. 5 A recognizable relatively large variation in the length of the sharpened bristles results from the production process of the bristles.
  • the sharpened bristles 40 have a pointed portion 48 with the tip 42 and a cylindrical portion 50 with the blunt end 46.
  • the diameter of the cylindrical portion 50 is 0.10 mm to 0.25 mm, preferably 0.15 mm to 0.20 mm.
  • the length of the pointed portion 48 measured from the tip 42 is at least 5 mm, preferably between 7 and 12 mm, in particular between 8 mm and 11 mm.
  • the taper has at the free end, at the tip 42 in the region before the beginning of the etching, after the chemical sharpening usually has a diameter of 0.015 mm to 0.025 mm, preferably 0.016 mm to 0.018 mm.
  • both pointed bristles 40 as well as continuously cylindrical conventional bristles 86 may have cross-sectional areas deviating from a circular area.
  • they may have triangular, rectangular, square, rhomboidal, elliptical, polygonal, star-shaped, regular n-shaped, or irregularly shaped cross-sectional areas.
  • the tips 42 of the sharpened bristles 40 are preferably machined by means of a mechanical processing device, in particular a grinding wheel 52; see FIG. 7 , In this case, the pointed bristles 40 are held at least approximately in the transition region from the cylindrical portion 50 in the tapered portion 48.
  • a holding element 54 may for this purpose have an approximately U-shaped cutout into which the sharpened bristles 42 are inserted and in which the bristles 40 are retained by means of a spring-loaded pressing element 56, for example, during the mechanical processing.
  • the holding element 54 used is preferably an element integrated in the so-called rounding disk, which is supported by a clamping mechanism mounted outside the disk.
  • the tips 42 of the bristles 40 are directed downwardly and the overhead blunt ends 46 of the bristles 40 abut against a stop plate 58. This prevents the escape of tapered bristles 40 in the direction away from the grinding wheel 52 due to the pressure exerted by the grinding wheel 52 on the tips 42 of the bristles 40. While such abrasive wheels 52 are for removing the cutting edges and rounding off the blunt ends of full length cylindrical conventional bristles 86 - see FIG.
  • the tips 42 of the pointed bristles 40 between 3 seconds to 8 seconds, preferably 3.5 seconds to 6.5 seconds, especially between 4 to 6 seconds by means of the grinding wheel 52 processed, depending on Abrasiveness of the grinding wheel 52, process parameters and obtained result.
  • the processing time of the sharpened bristles 40 is thus shorter than the processing time of the continuous cylindrical conventional bristles 86. Both types of bristles can be used in the same brush head and thus simultaneously processed with different process parameters.
  • the grinding wheel 52 is driven in an eccentric shape, so that when viewed in the plane, it executes a stroke of 20 to 50 mm, preferably between 30 and 40 mm, in the two directions perpendicular to each other.
  • the stroke of the grinding wheel 52, measured in the longitudinal direction of the bristles 40, is between 0 and 1.5 mm, preferably between 0.2 to 0.6 mm.
  • the grinding wheel 52 is brought to the middle position of the tips 42 of the bristle bundle 22, after which it processes the tips between 0.3 and 3 seconds, preferably 0.5 to 1.5 seconds.
  • the position of the grinding wheel 52 is adjusted by 0.1 to 1 mm, preferably 0.2 to 0.6 mm, in the direction of the pointed bristles 40, after which the driven grinding wheel 52 for another 2 to 6 seconds, preferably 3 to 5 Seconds acting on the pointed bristles 40. It has been found that reliably any possible etching threads or residual threads 44 are removed, even at bristle tips 42, which are set back as a result of the variation of the total length of the bristles 40.
  • the mechanically processed pointed bristles 40 are fed to an intermediate storage in which they are brought together with already previously machined sharpened bristles 40 together.
  • This intermediate storage then bristles 40 for the formation of the bristle bundles 22, compare FIG. 2 taken in groups.
  • the pointed bristles 40 of the respective bundle 22 need not coincide with the aforementioned bundle for the mechanical processing of the tips 42.
  • the bristle bundles 22 can be assembled from a plurality of removed groups.
  • FIG. 8 shows a part of a tool 60, consisting of a block-like base body 62, also called pallet, and a funnel plate 63 of the bristle machine.
  • a receiving recess 64 Through the block-like base body 62 of the tool 60 extends, in the present case in the vertical direction, a receiving recess 64.
  • the cross section of this receiving recess 64 is constant over the entire length of the rectilinear receiving recess 64 in the block-like base body 62.
  • a pin 66 is guided in sliding fit.
  • the block-like basic body 62 with associated pins 66 is compared with one circular arc 98 FIG. 13 - filled with bundles of pointed bristles 40.
  • the sliding fit between the base body 62 and the pin 66 is configured such that the tips 42 of the mechanically machined sharpened bristles 40 have a larger diameter than the tolerance range of the sliding fit. This substantial improvement step prevents jamming of the pointed bristles 40 between the pin 66 and the receiving recess 64.
  • the movement of the pin 66 in the slip fit is restricted so that it is movable only in the block-like base body 62.
  • the pin 66 is, for example, concave shaped to give the respective bundles of bristles 22, in the final form, a convex topography.
  • the final shape of the bundles of bristles 22 is significantly influenced by the shape of the end face 68 of the pin 66.
  • a concave portion of the end face 68 of the pin 66 allows the sharpened bristles 40 to bundle specifically and thereby additionally avoids jamming.
  • a concave configuration instead of a concave configuration, however, other arbitrary topographies of the end face 68 of the pin 66 are possible.
  • a bristle bundle 22 taken from a number of previously mechanically treated pointed bristles 40 is inserted from above with the tips 42 below into the receiving recess 64 of the block-like base body 62, at least to the extent that all bristles 40 are completely in the Receiving recess 64 are located and the bristles 40 abut with its tip 42 on the end face 68 of the pin 66.
  • the topography or the profile of the bristle bundles 22 with sharpened bristles 40 is thus produced only after the mechanical processing of the tips 42.
  • the funnel plate 63 is placed on the block-like base body 62 and thereon, if provided in the process, a bristle carrier plate 10 such that the bristle bundle 22 associated with this passage 16 of the bristle carrier plate 10 is aligned with the corresponding guide passage 69 in the funnel plate 63.
  • the upper side 12 of the bristle carrying plate 10 comes to rest on the funnel plate 63, so that the underside 14 of the bristle carrying plate 10 is exposed upwards.
  • this guide passage 69 of the funnel plate 63 also corresponds to the receiving recess 64.
  • the pointed bristles 40 are moved upwards and pushed with their blunt end 46 through the funnel plate 63 and the passage 16 until an end portion 70 adjoining the blunt end 46 protrudes in the cylindrical portion 50 of the bristles 40 on the bottom 14 of the bristle plate 10.
  • a heating punch 72 (or other thermal means) is lowered onto or near the bristles 40 so that the end portions 70 of the bristles 40 melt and form on the underside 14 a bristle melt coating at least partially covering the bottom 14 and thereby the bristles 40 anchored to the bristle plate 10.
  • the base body 62 of the tool 60 may have a further receiving recess 64 'with further pin 66' guided therein.
  • cylindrical conventional bristles 86 are inserted along their length; These come with their previously mechanically machined ends 86 'on the end face 68 of the other pin 66' to the plant, which also a topography - as described above - can be formed.
  • the funnel plate 63 has a further guide passage 69 'which is aligned with the further receiving recess 64' and, on the other hand, is aligned with a passage 16 'of the bristle carrying plate 10 for conventional bristles 86.
  • the further pin 66 ' is displaced to push the bundle of conventional bristles 86 through the further passage 16' of the bristle support plate 10 until the bundle of conventional bristles 86 with an end portion 70 'on the underside 14 of the bristle carrying plate 10th protrudes.
  • the melting of this end portion 70 ' is carried out as described above.
  • this bristle enamel coating may consist of polyester (pointed bristles 40) and polyamide (conventional bristles 86). Since these non-affine materials do not combine in the bristle melt, it is preferable to ensure that groups of bristle bundles are formed with the individual materials where the bristle melt can combine within a group.
  • the similar bristle bundles are placed in this regard preferably in groups with immediate proximity. In this case, therefore, preferably the bristle bundles 22 are introduced from tapered bristles 40 or conventional bristles 86 in receiving recesses 64 or further receiving recesses 64 'which are adjacent - forming a group - arranged.
  • FIG. 9 shows a way to equip a bristle carrier plate 10 with a bristle tuft having both pointed bristles 40 and conventional bristles 86.
  • the base body 62 has a receiving recess 64, in which, as described above, pointed bristles 40, and close to a further receiving recess 64 ', in which conventional bristles 86 are introduced or become, compares FIG. 8 ,
  • the guide passages 69 and 69 'of the funnel plate 63 associated with these receiving recesses 64 and 64' converge toward each other in the direction of the bristle carrying platelets 10 arranged on the funnel plate 63 so that they form a single common outlet for the bristles 40 and 86 at this end.
  • the two passages 69 and 69 still form separate outlets, but which lie directly next to each other.
  • the outlet (s) are aligned with a bristle 40 and 86 common passage 16 of the bristle support plate 10.
  • the bundle 22 becomes sharpened and the bundle 22 of conventional bristles 40, 86 pushed through the common passage 10 therethrough, to the end portions thereof 70, 70 'protrude beyond the underside 14 of the bristle plate 10.
  • the bristles 40, 86 are fastened to the bristle carrying plate 10.
  • the provided with the bristle facing 20 bristle carrier plate 10 is, as in connection with the FIG. 4 explained, taken from the tool 60 and brought together with the toothbrush body 28 in accordance with the prior art known manner and fastened there.
  • the bristles 40, 86 are guided into a mold cavity instead of through the bristle platelet 10. Plastic is then injected into this mold cavity to form the brush head and to anchor the bristles 40, 86.
  • FIG. 10 shows a plan view of a portion of a feed channel 74 of a bristle 76. This is bounded below by a feed tray 78 and on both sides of mutually parallel feed walls 80.
  • the pointed in the feed channel 74 or optionally cylindrical bristles 40, 86 are by means of a bar-like pusher 82 is pressed in the direction of arrow A against an outlet 84 of the feed channel 74.
  • FIG. 11 shows a vertical longitudinal section through a portion of a material channel 74 'of a known AFT machine.
  • cylindrical conventional bristles 86 They stand with their end, which will later form the free end of the bristle stock 20, on the material channel bottom 78 ', this corresponds to the Zunaturalgeber 78.
  • the continuously constant diameter of the conventional bristles 86th is 0.15 mm to 0.25 mm. They usually have a length of 14 mm to 18 mm, preferably 16 mm.
  • the distance between the cloth channel bottom 78 'and the upper edge of the profile-shaped, rectangular in cross-section pusher 82 9 mm.
  • the distance between the feed channel bottom 78 and the upper edge of the pusher 82 should be greater, for example between 11 mm and 17 mm, preferably between 13 mm and 16 mm, in particular 14 mm, as in FIG FIG. 12 is indicated.
  • the position of the pusher 82 in the material channel 74 'of a known Beborstungsmaschine is indicated by dashed lines.
  • known AFT machines for making toothbrushes with pointed bristles 40 can be used.
  • An adaptation to be made is further up in the Related to the mechanical processing of the tips 42 of the pointed bristles 40 described.
  • Another is in how, in connection with the FIGS. 10 to 12 explains to arrange the pusher 82 at a greater distance to the material channel bottom 78.
  • cylindrical conventional bristles 86 and pointed bristles 40 may be simultaneously processed on a single bristle machine 86.
  • the bristle machine 76 in this case has both types of the above-described feed channels 74 and cloth channels 74 'and associated pushers 82.
  • a knock plate 88 'of the bristle machine is shut down and thus forms only a still-standing boundary plate 88.
  • the limiting plate 88 may be made larger, from the surface, so that it covers a larger part of the feed channel 74 than the known knock plate 88 'and thus substantially covers the entire feed channel 74 together with a cover plate 90 in the end region of the feed channel 74 , see also FIG.
  • the knock plate 88 ' is disposed parallel to the cloth channel bottom 78' at a minimum distance corresponding to at least approximately the length of the conventional bristles 86 and provided with a vertical reciprocating motion to act on the upper ends of the conventional bristles 86 to move against the cloth channel bottom 78 ', to abut against it and thus to align the bristles 86.
  • the stationary limiting plate 88 is arranged at a distance above the feed channel bottom 78, which is slightly, for example 0.1 mm to 0.5 mm, preferably 0 , 2 mm to 0.3 mm greater than the length of the pointed bristles 40.
  • FIG. 13 shows by way of example in plan view a bristle 76 - in the present case, a known AFT machine - which, as described above, adapted for the processing of tapered bristles 40.
  • the bristle machine 76 has two feed channels 74 or material channels 74 ', which are intended for pointed bristles 40 of different colors, for example.
  • a bristle machine 76 it is possible for a bristle machine 76 to have both feed channels 74 and material channels 74 '. for pointed bristles 40 as well as for conventional bristles 86 has.
  • the ratio of the number of feed channels is determined by the configuration of the bristle facing 20 of the toothbrush to be produced, or the respective bristle configuration.
  • the feed channels 74 or material channels 74 ' are formed as in the FIGS. 10 to 12 shown and described above.
  • the boundary plate 88 extends from the outlet 84 opposite to the direction of the arrow A seen over about 2/3 of the total length of the feed channel 74 and Stoffkanals 74 '.
  • At the upstream end of the cover plate 88 is hinged to the cover plate 90, which is folded up to insert bristle supply bundles.
  • the sharpened bristles 40 are delivered in bristle delivery bundles with the tip 42 of all the bristles 40 pointing in the same direction and the bristle delivery bundles having a diameter of, for example, 3 to 5 cm.
  • the shape of the bristle delivery bundles is preferably configured elliptical to rectangular, due to their transport medium, an elongated cardboard packaging.
  • the length of the bristle delivery bundles is from 40 mm to 60 mm, preferably from 45 mm to 55 mm with a width of 25 mm to 40 mm, preferably from 30 mm to 35 mm.
  • the width of the bristle delivery bundle substantially corresponds to the width of the feed channel 74. This allows a simpler insertion of the bristle delivery bundles into the feed channel 74 without having to over-deform the fragile bristle delivery bundles.
  • the bristle delivery bundles can be transported in this form easier and space-saving in an elongated cardboard packaging.
  • the bristle delivery bundle laterally around the bundle a holding strip of defined length, which holds the large number of pointed bristles 40 together. Due to the defined length of the holding strip, virtually no pressure is exerted on the sharpened bristles in the bristle delivery bundle.
  • the bristle delivery bundles are inserted with the tips 42 of the bristles 40 down into the feed channel 74 and cloth channel 74 ', manually advanced toward the already existing therein bristles 40, clamped by a manually operated slide in the direction against the pusher 82 and then manually , preferably freed from the holding strip in the vertical direction.
  • the pusher 82 is then automatically, after manual triggering, laterally out of the feed channel 74 or cloth channel 74 'extended, brought by the pressed carriages the newly inserted pointed bristles 40 in abutment with the already present in the feed channel 74 and material channel 74' pointed bristles 40 become.
  • the pusher 82 is moved back to the carriage and in turn applied behind the introduced bristles 40, in order to continue to press and guide all pointed bristles 40 present in the supply channel 74 or substance channel 74 'against the outlet 84.
  • a group of sharpened bristles 40 is separated from the supply. This can be done using a known boron machine in a known manner by means of a rounding disc 54 ', which may correspond to the holding element 54, see FIG. 7 , This has dashed lines indicated recesses into which the group of bristles 40 is pushed under the action of the pusher 82 into it.
  • the rounding disc 54 ' is then rotated about its axis at an angle to the mechanical working station of the tips 42 of the bristles 40. In FIG. 13 If the stop plate 58 is shown, below which the pressure element 56 cooperating with the rounding disk 54 'and the driven grinding wheel 52 are located, compare this FIG. 7 , In this mechanical processing of the tips 42 of the sharpened bristles 40, the possibly present etch threads or residual threads 44 are abraded and possibly the tips 42 minimally rounded or broken.
  • segments 96 In the present case, two groups of segments 96 are shown, which are independently movable along the trajectory 94.
  • the segments 96 form an intermediate bearing for the bristles 40 with machined tips 42.
  • the rounding disk 54 ' is further rotated in the same direction of rotation and, as soon as a recess with bristles 40 reaches the movement path 94, these bristles 40 become pushed into a corresponding segment 96 inside.
  • This process, as well as the control and the structure of the segments 96 and the delivery of bundles 22 of bristles 40 of the Segments 96 on the so-called circular arc 98 is commonly known from boron machines and in particular from AFT machines.
  • the circular arc 98 takes over from the relevant segment 96 a bundle 22 of bristles 40 and brings them to the tool 60 and the corresponding receiving recess 64 in the block-like base body 62, the pallet or the tool 60 of a Beborstungsmaschine; see also FIG. 8 ,
  • the bristles are guided instead of through the bristle platelet 10 into a mold cavity of an injection molding tool. Plastic is then injected into this mold cavity to form the brush head and anchor the bristles.
  • the bristle platelets 10 can be provided with soft-elastic cleaning elements, for example made of a soft plastic, which have been injection-molded in two or more component processes on the bristle carrier platelet 10.
  • the present invention allows bristle stockings 20 to be formed in which a single bristle tuft has both pointed bristles 40 and conventional bristles 86.
  • the pointed bristles 40 are processed according to the method according to the invention while the conventional bristles are processed according to the previously known method,
  • care is taken that the respective bristle bundles 22 have a mixture of sharpened bristles 40 and conventional bristles 86.
  • the alternative possibility should also be considered FIG. 9 and the description directed to this.
  • the invention can be used for bristle fields of various products.
  • manual toothbrushes electric toothbrushes with oscillating, pivoting or translational motion, vibration / sonic toothbrushes or toothbrushes with combined movements can be provided with pointed bristles.
  • tongue cleaning brushes or tongue-only cleaners are also used for toothbrushes arranged.

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

Claims (19)

  1. Méthode pour la fabrication de brosses à dents garnies sans ancrage de poils, dans laquelle un faisceau (22) de poils est introduit dans un évidement de réception (64) d'un outil (60) d'une machine de garnissage de poils (76) et une tige (66), guidée dans l'évidement de réception (64), agit sur l'extrémité des poils orientée vers la tige (66) pour aligner les poils (40) des faisceaux (22) de poils introduits, des poils (40) rétrécis chimiquement à une extrémité, qui présentent une partie (48) se terminant en une pointe (42) et une partie cylindrique (50) jointe à la partie (48) ayant une extrémité (46) émoussée, étant introduits dans l'évidement de réception (64) de telle sorte que les poils (40) rétrécis sont situés dans l'évidement de réception (64) dans toute leur longueur, la tige (66) agissant sur les pointes (42) afin d'aligner les poils (40) et les pointes (42) des poils (40) rétrécis étant en plus traités mécaniquement avant de les introduire dans l'évidement de réception (64).
  2. Méthode selon la revendication 1, caractérisée en ce que les pointes (42) des poils (40) rétrécis sont traités mécaniquement dans la machine de garnissage de poils (76).
  3. Méthode selon la revendication 1 ou 2, caractérisée en ce que lors du traitement mécanique, les pointes (42) des poils (40) rétrécis sont meulés, préférablement au moyen d'une meule (52).
  4. Méthode selon l'une des revendications 1 à 3, caractérisée en ce que sont utilisés des poils (40) rétrécis dont la partie (48) rétrécie a au moins une longueur de 5 mm, préférablement entre 7 mm et 12 mm, en particulier entre 8 mm et 11 mm.
  5. Méthode selon l'une des revendications 1 à 4, caractérisée en ce que, lors du traitement mécanique des pointes (42), les poils (40) rétrécis sont retenus au moins approximativement dans la zone de transition entre la partie cylindrique (50) et la partie (48) rétrécie, préférablement par un disque à arrondir (54') de la machine de garnissage de poils, en particulier d'une machine de type AFT, et par un élement exerçant une pression (56) qui interagit avec celui-ci.
  6. Méthode selon la revendication 5, caractérisée en ce que, lors du traitement mécanique des pointes (42), les poils (40) rétrécis sont retenus alignés au moyen d'une plaque d'arrêt (58) qui interagit avec l'extrémité (46) émoussée des poils (40).
  7. Méthode selon l'une des revendications 1 à 6, caractérisée en ce que les pointes (42) des poils (40) rétrécis sont traités mécaniquement de telle sorte que les pointes (42) présentent un diamètre qui est plus grand que l'intervalle de tolérance pour un ajustement coulissant entre l'outil (60) et la tige (66).
  8. Méthode selon l'une des revendications 1 à 7, caractérisée en ce qu'une topographie convexe est donnée au faisceau (22) de poils par la face frontale (68) de forme concave de la tige (66) agissant sur les pointes (20) des poils (40) rétrécis.
  9. Méthode selon l'une des revendications 1 à 7, caractérisée en ce qu'une topographie est créée sur le faisceau (22) de poils (40) rétrécis seulement après le traitement mécanique des pointes (42).
  10. Méthode selon l'une des revendications 1 à 9, caractérisée en ce que, avant le traitement mécanique des pointes (42), les poils (40) rétrécis sont positionnés avec les pointes (42) dirigées vers le bas dans un canal d'alimentation (74), en particulier un canal de matière (74') de la machine de garnissage de poils (76), en particulier de la machine de type AFT, et sont poussés dans le canal d'alimentation (74) au moyen d'un poussoir (82), dans la direction (A) d'une sortie (84) du canal d'alimentation (74), le poussoir (82) agissant sur la partie cylindrique (50) des poils (40).
  11. Méthode selon la revendication 10, caractérisée en ce que les poils (40) rétrécis sont retenus dans le canal d'alimentation (74) au moyen d'une plaque de confinement (88) qui interagit avec l'extrémité émoussée (46) des poils (40), en particulier au moyen d'une plaque stationnaire à tapoter (88') de la machine de garnissage de poils (76), en particulier de la machine de type AFT.
  12. Méthode selon l'une des revendications 1 à 11, caractérisée en ce qu'une plaquette de support de poils (10) présentant un passage (16) est disposée sur l'outil (60), en particulier sur une plaque avec cônes de pliage (63) disposée sur l'outil, les poils (40) rétrécis du faisceau (22) de poils sont poussés à travers le passage (16) au moyen d'une tige (66) de telle sorte que les poils (40) rétrécis sont en saillie au-delà de la face inférieure (14) située au-dessus de la plaquette de support de poils (10) avec une partie d'extrémité (70) de la partie cylindrique (50), cette partie d'extrémité présentant une extrémité émoussée (46), et la partie d'extrémité (70) des poils (40) sont fondus de façon à fixer les poils (40) rétrécis sur la plaquette de support de poils (10).
  13. Méthode selon l'une des revendications 1 à 11, caractérisée en ce que des poils conventionnels (86) cylindriques de façon continue, sont introduits dans un évidement de réception (64') supplémentaire de l'outil (60) de telle sorte que les poils conventionnels (86) sont situés dans l'évidement de réception (64') supplémentaire, une tige supplémentaire (66'), guidée dans l'évidement de réception (64') supplémentaire, agit sur cette extrémité des poils conventionnels orientée vers elle pour aligner les poils conventionnels (86) et cette extrémité des poils conventionnels (86) est traitée mécaniquement, préférablement dans la machine de garnissage de poils (76), avant l'introduction dans l'évidement de réception (64') supplémentaire.
  14. Méthode selon la revendication 13, caractérisée en ce que les poils (40) rétrécis sont traités mécaniquement pendant un temps de traitement plus court que les poils conventionnels (86).
  15. Méthode selon l'une des revendications 13 ou 14, caractérisée en ce que chaque fois un faisceau (22) de poils (40) rétrécis est introduit dans une multitude d'évidements de réception (64) de l'outil (60) proches les uns des autres et chaque fois un faisceau (22) de poils conventionnels (86) est introduites dans une multitude d'évidements de réception (64') supplémentaires de l'outil (60) proches les uns des autres.
  16. Méthode selon l'une des revendications 13 ou 14, caractérisée en ce qu'une plaquette de support de poils (10) présentant un passage (16) est disposée sur l'outil (60), en particulier sur une plaque avec cônes de pliage (63) disposée sur l'outil, les poils (40) rétrécis du faisceau (22) de poils sont poussés à travers le passage (16) au moyen de la tige (66), et les poils conventionnels (86) sont poussés ensemble à travers le passage (16) au moyen de la tige (66') supplémentaire, de telle sorte que les poils (40) rétrécis sont en saillie au-delà de la face inférieure (14) située au-dessus de la plaquette de support de poils (10) avec une partie d'extrémité (70) de la partie cylindrique (50) et que que les poils conventionnels (86) sont en saillie au-delà de la face inférieure (14) située au-dessus de la plaquette de support de poils (10) également avec une partie d'extrémité (70'), et les parties d'extrémité (70, 70') des poils (40, 86) sont fondus de façon à fixer les poils (40, 86) sur la plaquette de support de poils (10).
  17. Méthode selon l'une des revendications 12 ou 16, caractérisée en ce qu'une plaquette de support de poils (10) munie d'un complément (20) de poils est fixée dans la région de la tête (24) du corps de brosse à dents (28).
  18. Utilisation d'une machine de garnissage de poils (76), en particulier d'une machine de type AFT, pour la mise en oeuvre de la méthode selon l'une des revendications 1 à 17, une meule (52) traitant mécaniquement les pointes (42) des poils (40) rétrécis retenus par un disque à arrondir (54') et un poussoir (82) étant disposé dans un canal d'alimentation (74), en particulier d'un canal de matière (74') de la machine de type AFT, à une distance au-dessus de la base d'un canal (78') telle qu'il agit sur la portion cylindrique (50) des poils (40) rétrécis, qui ont leur pointe (42) orientée vers la base du canal(78').
  19. Utilisation selon la revendication 18, caractérisée en ce qu'une plaque à tapoter (88') de la machine de garnissage de poils, en particulier de la machine de type AFT, est maintenue stationnaire.
EP08010409.4A 2008-06-07 2008-06-07 Procédé de fabrication de brosses à dents à poils non ancrés Active EP2130454B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP12004612.3A EP2526815B1 (fr) 2008-06-07 2008-06-07 Brosse à dents avec faisceaux de soies mélangés et procédé de fabrication
EP08010409.4A EP2130454B1 (fr) 2008-06-07 2008-06-07 Procédé de fabrication de brosses à dents à poils non ancrés
US12/991,528 US8534769B2 (en) 2008-06-07 2009-06-04 Method for producing toothbrushes bristled in an anchorless manner
PCT/EP2009/003999 WO2009146909A2 (fr) 2008-06-07 2009-06-04 Procédé de fabrication de brosses à dents à empoilage sans ancrage
CN201410002061.1A CN103767313B (zh) 2008-06-07 2009-06-04 牙刷和用于制造无锚栽毛的牙刷的方法
CN200980121035.8A CN102056507B (zh) 2008-06-07 2009-06-04 用于制造无锚栽毛的牙刷的方法及载毛机的应用
US13/952,017 US9173480B2 (en) 2008-06-07 2013-07-26 Method for producing toothbrushes covered with bristles in an anchor-free manner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08010409.4A EP2130454B1 (fr) 2008-06-07 2008-06-07 Procédé de fabrication de brosses à dents à poils non ancrés

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP12004612.3A Division EP2526815B1 (fr) 2008-06-07 2008-06-07 Brosse à dents avec faisceaux de soies mélangés et procédé de fabrication
EP12004612.3A Division-Into EP2526815B1 (fr) 2008-06-07 2008-06-07 Brosse à dents avec faisceaux de soies mélangés et procédé de fabrication

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EP2130454A1 EP2130454A1 (fr) 2009-12-09
EP2130454B1 true EP2130454B1 (fr) 2015-10-28

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EP12004612.3A Active EP2526815B1 (fr) 2008-06-07 2008-06-07 Brosse à dents avec faisceaux de soies mélangés et procédé de fabrication
EP08010409.4A Active EP2130454B1 (fr) 2008-06-07 2008-06-07 Procédé de fabrication de brosses à dents à poils non ancrés

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EP12004612.3A Active EP2526815B1 (fr) 2008-06-07 2008-06-07 Brosse à dents avec faisceaux de soies mélangés et procédé de fabrication

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EP (2) EP2526815B1 (fr)
CN (2) CN102056507B (fr)
WO (1) WO2009146909A2 (fr)

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BE1017222A3 (nl) * 2006-07-12 2008-05-06 Frima G B Boucherie Nv Werkwijze voor het vervaardigen van borstels en inrichting daarbij toegepast.
KR100742196B1 (ko) * 2006-11-16 2007-07-24 주식회사 베스트화성 짧은 테이퍼 길이를 가지는 침상모의 제조방법 및 이방법에 의하여 제조된 칫솔
AR074602A1 (es) * 2008-12-15 2011-01-26 Glaxosmithkline Consumer Healt Una cabeza de cepillo de dientes
GB0822855D0 (en) * 2008-12-15 2009-01-21 Glaxosmithkline Consumer Health Novel device

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US20130333132A1 (en) 2013-12-19
EP2526815B1 (fr) 2018-04-18
WO2009146909A3 (fr) 2010-04-29
CN103767313A (zh) 2014-05-07
EP2526815A3 (fr) 2012-12-12
EP2130454A1 (fr) 2009-12-09
US20110109149A1 (en) 2011-05-12
WO2009146909A2 (fr) 2009-12-10
CN102056507B (zh) 2014-01-22
US9173480B2 (en) 2015-11-03
EP2526815A2 (fr) 2012-11-28
US8534769B2 (en) 2013-09-17
CN102056507A (zh) 2011-05-11
CN103767313B (zh) 2016-06-29

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