Device for producing round brushes
AssigneeBorghi S.P.A.
InventorsEttore Magni, Enzo Ferrari
Life of this patent
Estimating the term…
Abstract
A method and apparatus for producing round brushes having bristles clamped between two wire portions of a folded wire, comprising a feed station and a subsequent finishing station, wherein in the feed station a wire is bent between two counter holders, and the feed station comprises a bristle feed device and a rotatable gripper adapted to grip the bent wire and twist it during the feed of bristles to anchor the bristles in the wire. In the finishing station, the twisted wire is held by a stationary gripper and further twisted by the rotatable gripper. The bristles are then cut on their outer side.
Claims16
An apparatus for manufacturing round brushes that include bristles clamped between two wire portions of a folded wire, comprising:
- a feed station and a subsequently arranged finishing station;
- the feed station having two opposed counter-brackets that are spaced apart from each other, a bristle feeding device and a rotatable gripper;
- the feed station being designed to bend a wire, which is transported into the feed station, transversely to a longitudinal direction of the wire between the opposed counter-brackets;
- the bristle feeding device being designed to feed bristles to the bent wire, and the rotatable gripper being designed to grasp the bent wire and twist the bent wire during the feeding of the bristles in order to anchor the bristles in the wire;
- the finishing station being designed to receive the twisted wire and to further twist the wire and cut the bristles on an outer end of the bristles;
- the finishing station having a finishing station gripper that can grasp a free end of the twisted wire;
- the apparatus having a rotatable base to which a plurality of rotatable grippers are attached and wherein, by rotating the base, the rotatable gripper together with the wire just twisted can be transferred from the feed station into the finishing station where the wire just twisted is grasped by the finishing station gripper, wherein the rotatable gripper can be put into rotation for the further twisting;
- and
- wherein a milling cutter or a knife is provided in the finishing station for cutting the bristles at the outer end.
A method of producing round brushes having bristles clamped between two wire portions of a folded wire, the method comprising steps of:
- in a feed station, a fed wire is bent transversely to its longitudinal direction between two opposed, spaced-apart counter-brackets and twisted by means of a rotatable gripper, bristles being fed to the bent wire during twisting to anchor them between twisted wire halves, and
- the twisted wire provided with the bristles is transferred to a finishing station by rotating a rotatable base and the rotatable gripper seated on the base,
- a finishing station gripper grasps free ends of the twisted wire halves in the finishing station,
- in the finishing station, the rotatable gripper is rotated to further twist the wire, and
- the bristles are subsequently cut at their outer ends in the finishing station.
Dependencies are inferred from the claim text.