Abstract: A tuft picker device for a brush making machine has a bristle magazine for holding a supply of loose bristles and a tuft picker having a tuft picking notch being movable past an open side of the bristle magazine in a working stroke. A shield member is adapted to be shifted across the tuft picker notch to change the effective depth thereof. The shield member can be adjusted by an adjusting device in each working stroke in order to vary the effective depth of the tuft picking notch from one working stroke to the next to change the size of a tuft engaged in the notch.

Abstract: 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.

Abstract: A bristle magazine for a broom or brush stuffing machine includes a receiving space for a multitude of bristles, a bending edge and a bracket opposite the bending edge for maintaining the bristles in a curved condition.

Abstract: A method of producing, by injection molding, a hollow cylindrical syringe body which is provided with a scale applied in the longitudinal direction. The scale is applied to a thin carrier film and the carrier film with the scale is inserted into the injection mold prior to the injection molding process.

Abstract: A tuft picker device for a brush making machine has a bristle magazine for holding a supply of loose bristles, a tuft picker having a tuft picking notch being movable past an open side of the bristle magazine in a working stroke. A shield member is adapted to be shifted across the tuft picker notch to change the effective depth thereof. The shield member can be adjusted by an adjusting device in each working stroke in order to vary the effective depth of the tuft picking notch from one working stroke to the next to change the size of a tuft engaged in the notch.

Abstract: A bristle magazine for a broom or brush stuffing machine includes a receiving space for a multitude of bristles, a bending edge and a bracket opposite the bending edge for maintaining the bristles in a curved condition.

Abstract: 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.

Abstract: A toothbrush comprises a brush body with a brush head and a carrier platelet attached to the brush head. A plurality of bristle bundles consisting of a thermoplastic material are attached anchor-less to the platelet. The brush head in addition has: bores, recesses or holes which have bristle bundles inserted and affixed with anchors or loops; and/or bores, recesses or holes which have knobs, pegs, pointed bristles or pointed cones inserted therein; and/or knobs, pegs, pointed bristles or pointed cones attached to the brush head.

Abstract: Method for manufacturing brushes, whereby, on one hand, fibers (3) are supplied to at least one filling tool (4) by means of at least one auxiliary device (15) comprising at least two fiber loading chambers (16-20) and, on the other hand, said fiber loading chambers (16-20) are replenished by taking up fibers (3) from at least two respective fiber supply channels (8-12), whereby, by means of the filling tool (4), the fibers (3) are inserted into brush bodies (6), wherein, on one hand, the supply of the fibers (3) from the fiber loading chambers (16-20) to the filling tool (4) and, on the other hand, the replenishing of the fiber loading chambers (16-20) with fibers (3) from the fiber supply channels (8-12) is realized by means of working cycles which as such are independent.

Abstract: A brush tufting machine includes a machine tool table having a slide that is displaceably guided on the machine tool table in at least two mutually orthogonal directions. A first drive is provided for reciprocating the slide in a first one of the two directions, and a second drive is provided for reciprocating the slide in a second one of the two directions. Two drums are mounted at the slide for rotation about parallel, spaced axes. Two tufting tools are arranged at the machine tool table at a distance from each other and each in opposition to a peripheral surface of one of the drums. The peripheral surface of each drum has brush body holders arranged thereon.

Abstract: A method of producing brushes by connecting plates of a plastic material, having each tufts of brush bristles attached thereto and projecting from a first face, to an attachment surface portion of a brush body made of plastic, in particular the same plastic, by means of ultrasonic welding of gluing. Each of the plates has a peripheral rim facing the brush body and having an edge formed thereon which acts as an energy concentrator in ultrasonic welding.

Abstract: Method for manufacturing brushes, whereby, on one hand, fibers (3) are supplied to at least one filling tool (4) by means of at least one auxiliary device (15) comprising at least two fiber loading chambers (16-20) and, on the other hand, said fiber loading chambers (16-20) are replenished by taking up fibers (3) from at least two respective fiber supply channels (8-12), whereby, by means of the filling tool (4), the fibers (3) are inserted into brush bodies (6), wherein, on one hand, the supply of the fibers (3) from the fiber loading chambers (16-20) to the filling tool (4) and, on the other hand, the replenishing of the fiber loading chambers (16-20) with fibers (3) from the fiber supply channels (8-12) is realized by means of working cycles which as such are independent.

Abstract: A tool for injection molding of toothbrush bodies of two different plastics components comprises two mold parts which can be moved relative to each other and together constitute four groups of parallel mold cavities. One of the mold parts has a recess for each group of mold cavities. A mold insert fits into the recess. Partial cavities are formed in the mold inserts, which partial cavities each correspond to a head portion of a toothbrush body. A first plastics component is injected into a first pair of groups of the mold cavities and a second plastics component is injected into a second pair of groups of the mold cavities. The mold cavities of the first pair of groups are arranged on the one side and those of the second group are arranged on the other side of a rotatable carrier arm to which the mold inserts are fastened. The mold cavities are arranged in each group parallel to each other and so as to have the same orientation.

Abstract: In a method of melting together axial ends of bunched fibers of thermoplastic material, the fiber ends are brought into contact with the heated surface of a stamp. The body of the stamp is heated by controlling an electric current passing through it. In one embodiment the stamp is cooled by a flow of compressed air before the stamp is separated from the fiber ends. In another embodiment, the stamp is separated from the melted fiber ends, heated to a higher temperature to vaporize any residual fiber material, and cooled by exposure to compressed air until it has no more than the temperature for melting the fiber material.

Abstract: In the proposed method of molding toothbrushes, a mold with relatively movable mold parts (14, 16) defining at least one molding cavity (20) corresponding in shape to a toothbrush body is used. One of the mold parts (16) has a brush head defining cavity portion with a plurality of holes (24) for partial penetration into the cavity portion of a like number of fiber tufts. Plasticized molding material is injected under pressure into the cavity (20). Pressure within the cavity is sensed during the injecting step. The injection is stopped when the pressure within the cavity exceeds a predetermined pressure value, thereby avoiding any leakage of molding material through the holes (24).

Abstract: In order to attach brush bristle tufts onto carriers made of thermoplastic material, which are formed with multiple holes according to a desired tuft pattern, the bristle tufts are first inserted into the holes in such a way that the bristle tips that are to be used protrude from one side while the bristle ends protrude only slightly from the holes on the opposite side. A heated punch has a multiplicity of conical or pyramidal projections. The projections of this punch penetrate between the holes into the mass of the carrier so that this mass softens and is pushed laterally into the interstices of the bristle tufts. In this manner, a tight interlock is created between the material of the bristles and that of the carrier.

Abstract: For implant molding of toothbrushes pre-cut and pre-rounded fiber of thermoplastic material are used. Loose fibers are presented to an endrounding tool in a tuft or bundle and the free ends of the fibers are exposed to a working surface of the tool. Relative movement between the fiber ends and working surface causes the material of the fibers to be heated by friction of a predetermined intensity. The fibers while they are exposed to the working surface of the tool are permitted to flex laterally and are held in an axial direction of the tuft or bundle with their free ends commonly defining a surface different from a plane which is perpendicular to the axial direction, thereby achieving a substantially consistent flexing resistance throughout the cross-section of the tuft or bundle with respect to lateral deflection upon engagement by the endrounding tool.

Abstract: Provided is a brush finishing machine including, arranged along an endless chain, finishing stations comprising at least one stamping press for marking the brush handles with decals transferred for application thereto from a foil advanced by an indexing mechanism provided upstream of the brush handles, the endless chain carrying at each chain link two brush bodies held spaced away from each other at the chain link, and the stamping press comprising two stamping dies located opposite the brush handles.

Abstract: A device for removing individual fiber tufts from a plurality of fiber bins of a brush making machine comprises a tuft remover, a counterpart matching the tuft remover and a movable slide arranged between the counterpart and the fiber bins. The slide has a plurality of through-passages each of which is associated with one of the fiber bins. The outer passages of the slide are inclined at an angle to the central passage. Between the central fiber bin and each of the outer fiber bins an associated ram is arranged. Each ram has an end face which faces the slide and either bears on one side surface area of the slide or applies pressure to the opposite end of one of the outer through-passages, depending on the respective position of the slide. The device allows the tuft remover to selectively pick up tufts of three different types of fiber.

Abstract: A tufting device for the filling tool of a brush tufting machine is provided which permits the operating stroke of the filling tool to be varied and adjusted without affecting operating speed and precision of operation. The tufting device has a guide block, a guide channel in the guide block, a tuft driver tongue driven with a reciprocating movement and movably received in the guide channel, and a header having a through channel aligned with the guide channel. The header and guide block are driven with a relative reciprocating movement towards and away from each other. The device further has a drive system with a rotating drive shaft, a cam on the drive shaft and a cam follower riding on the cam. The cam follower is driven by the cam with a reciprocating movement of a predetermined stroke length. The drive system further comprises a conversion mechanism for converting the reciprocating movement of a predetermined stroke length into a drive stroke of an adjustably variable length.