Abrégé

The invention relates to a bristle insert (10), in particular for a brush, formed by at least one package comprising a portion of plastic bristles (12), the ends of which are fused to one another in such a way that a self-supporting retaining element (14) is formed. The invention also relates to a brush having such a bristle insert (10) and to a method for producing such a bristle insert.

Classes IPC  ?

• A46B 3/06 - Brosses caractérisées par la façon dont les soies sont fixées ou assemblées dans ou sur le corps ou la monture de la brosse en soudant ensemble des soies de fils métalliques ou de matières plastiques

Abrégé

The invention relates to the use of carrier plates (10) having holes (12) for fiber bundles (16) and at least one hole (14) or recess for a soft elastic element (22) used for producing brushes, particularly toothbrushes. The fiber bundles are inserted into the holes, and the fastening ends of the fiber bundle protruding out of the holes are attached to the carrier plate by fusing. The hole or recess for a soft elastic element is thereby at least largely kept away from the fused material. The soft elastic element is produced by injecting in an injection mold through the hole or recess, forming a layer (24) of the soft elastic material on the side of the fused fastening ends of the fiber bundle. The carrier plate is combined with a brush body before or after injecting the soft elastic material. To this end, the brush body is either produced separately and connected to the carrier plate by welding or the like, or the carrier plate is encapsulated by the mass of the brush body.

Classes IPC  ?

• A46B 3/04 - Brosses caractérisées par la façon dont les soies sont fixées ou assemblées dans ou sur le corps ou la monture de la brosse au moyen de matières moulables, p. ex. métaux, dérivés de la cellulose, plastiques
• A46B 3/06 - Brosses caractérisées par la façon dont les soies sont fixées ou assemblées dans ou sur le corps ou la monture de la brosse en soudant ensemble des soies de fils métalliques ou de matières plastiques
• A46D 3/00 - Préparation des montures

Abrégé

Device (1) for manufacturing injection molding pieces (2) which mainly consists of a stack mold (3) with a central cubical part (4) and two mold impressions (9,10), whereby the device (1) is provided with a cooling station (15) and an ejection station (16) as well as four holders (17-20) for holding an injection molding piece (2), which are formed as a piece (17-20) which can be taken out of the cube and which partly co-determines a mold impression (9,10), and with means (24) to detach the holders (17-20) from the cube faces (5, 13, 6, 14) with mold impressions (9, 10) and to put them in the latter again, as well as means (25) to each time move the holders (17-20) a quarter of a turn to a following cube face (13, 6, 14, 5) after the injection molding.

Classes IPC  ?

• B29C 45/04 - Appareils de moulage par injection avec moules mobiles

Abrégé

Method for manufacturing brushes with a brush body and bundles of fibres provided thereon, whereby the bundles of fibres (4) are fixed in the brush body (5) or at least a part of the brush body (5') by means of a holder (10) for bundles of fibres (4), whereby the holder (10) forms a part of the finished brush body, characterised in that the brush body (5) is transparent for at least a part, at least at the holder (10), and in that the method provides an object (13) between the holder (10) and the brush body (5') or the above-mentioned part of the brush body (5) which is visible through a transparent part of the brush body.

Classes IPC  ?

• A46D 3/06 - Machines pour à la fois percer les montures et insérer les soies
• A46D 3/04 - Machines à insérer ou fixer les soies dans les montures

Abrégé

Method for manufacturing brushes, characterised in that it consists in (A) providing an amount of loose fibres (1) provided with a base end (2) and a sharp tip (3) and which are all oriented in the same direction; (B) composing fibre bundles (4) from this loose amount of fibres (1); (C) pushing the fibre bundles (4) one by one in openings (5) of a support (6) by exerting a pushing force on one far end, in particular on the base end (2) of the fibres (1) according to the longitudinal direction; (D) providing a holder (7) on the support (6) which is provided with openings (5) corresponding to the fibre pattern which must be realised in the brush; (E) pushing the fibre bundles (4) from the support (6) into the openings (5) of the holder (7) by exerting a pushing force on the same above-mentioned base end (2) of the fibres in the same direction as the above- mentioned push movement, whereby it is made sure that the fibre bundles (4) still partly protrude from the holder (7) with the base ends (2); (F) connecting the above-mentioned base ends (2) of the fibre bundles (4) to each other or to a brush body (10) and (G) removing the holder (7) again.

Classes IPC  ?

• A46D 3/04 - Machines à insérer ou fixer les soies dans les montures

Abrégé

Device (1) for manufacturing injection moulding pieces (2) which mainly consists of a stack mould (3) with a central cubical part (4) and two mould impressions (9,10), whereby the device (1) is provided with a cooling station (15) and an ejection station (16) as well as four holders (17-20) for holding an injection moulding piece (2), which are formed as a piece (17-20) which can be taken out of the cube and which partly co-determines a mould impression (9,10), and with means (24) to detach the holders (17-20) from the cube faces (5,13,6,14) with mould impressions (9,10) and to put them in the latter again, as well as means (25) to each time move the holders (17-20) a quarter of a turn to a following cube face (13,6,14,5) after the injection moulding.

Classes IPC  ?

• B29C 45/16 - Fabrication d'objets multicouches ou polychromes

Abrégé

A brush stuffing machine comprising a bristle magazine and a stuffing tool which is movable between a bundle take-over position and a stuffing position, the stuffing tool is pivotally mounted about an axis for movement on a circular arc between the take-over position and the stuffing position.

Classes IPC  ?

• A46D 3/04 - Machines à insérer ou fixer les soies dans les montures

Abrégé

Method for manufacturing brushes, whereby bundles of fibers (2) are provided in openings (3) in a brush body (4) by a filling tool (5) of the type which at least consists of a bundle remover (7) for separating bundles of fibers (2) from a fiber magazine (8), a mechanism (9) for supplying fastening material (10) in order to fix the bundles of fibers (2) in the openings (3), a filling tool slide (11) moving to and fro to guide the bundles of fibers (2) to the brush body (4) and a needle (13) to put every bundle of fibers (2) concerned in the corresponding opening (3) together with a fastening element (14) formed of the fastening material (10), wherein at least the filling tool slide (11) is controlled by an individual electric drive element (27).

Classes IPC  ?

• A46D 3/04 - Machines à insérer ou fixer les soies dans les montures