Abstract: A process for producing toothbrushes covered with bristles in an anchor-free manner, in which a tuft of bristles with cylindrical bristles and/or pointed bristles is introduced into a receiving recess of a mold of a bristle-providing machine and, by means of a profiled pin guided in the receiving recess, force is applied to the end facing the pin of the bristles of the tuft of bristles for the alignment thereof, so that the bristles of the tuft of bristles are aligned by means of an end face of the profiled pin and, as a result, form the topography that complements the topography of the end face of the profiled pin, wherein the profiled pin has on the end face that acts on the bristles a discontinuous surface, which forms multiple levels. This achieves a bristle area configuration that has multiple areas of use. A correspondingly produced toothbrush is also described.

Abstract: An automatic punching machine for making brushes comprises a slide connected to a first actuator for receiving bundles of fibers and feeding them to a brush body; a needle connected to a second actuator for inserting the bundles of fibers inside corresponding openings of the brush body; a first and a second sensor for detecting a first and second signal representing the position of the slide and of the needle; a memory containing data of a trend of a control parameter representing the position of the slide as a function of a synchronization parameter having a predetermined relationship with a parameter representing the needle position; a processor programmed for deriving in real time values of the synchronization parameter and for controlling the first actuator by feedback as a function of the first and second signals, the synchronization parameter and the data contained in the memory.

Abstract: Method for manufacturing brushes, characterized in that a device is applied consisting of at least one carrier (2) with openings (3) which are mutually arranged according to a certain pattern, whereby the fiber bundles which have to be provided in a brush body (5) can be put in this carrier (2), and whereby this method further consists in the combination of at least four steps (6-8-9-11), respectively, the lateral separation of fiber bundles (4) from at least one quantity of loose fibers (7); the provision, in a mechanical manner, step-by-step, of the aforementioned fiber bundles (4) in the aforementioned carrier (2); the transfer of the fiber bundles (4) which are placed in the carrier by means of this carrier (2) to a holder (10); and, by means of this holder (10), the fixation of the fiber bundles (4) in the brush body (5), or at least in a portion of the brush body.

Abstract: Brush filling apparatus comprising(a) longitudinally axially spaced rotary heads,(b) first structure to releasably couple three longitudinally extending brush cores to two of the heads, with the cores spaced about the axis,(c) second structure to rotate at least one of the heads about the axis, to rotate the cores between three index positions,(d) third structure to drill bristle receiving holes in a core at one of the positions,(e) fourth structure to fill bristles into the holes at a second of the positions, and(f) fifth structure to trim the filled bristles at a third of the positions.

Abstract: A process for inserting points (38) on a mandrel (36) and a machine for performing this process. A working head (40) simultaneously ensures the insertion of a point and the making of a perforation (112) in the mandrel by means of a punch (94). The perforation is made in the same longitudinal row as the inserted point and towards the front with respect to the latter, in such a way that it is subsequently possible to guide a point following a rotation of one or more turns of the mandrel. The invention is applicable to the production of members or bodies of revolution made from three-dimensional material.

Abstract: Device for handling brush bodies made of flexible material, characterized by the fact that it mainly consists of the combination of means for liberating brush bodies one at a time, means which punch holes in this brush bodies and means which maintain the brush body in the correct location during the punching of aforesaid holes; and means which maintain the brush body in the correct location during the filling thereof with fibres.