GB1374843A - Brush making machines - Google Patents

Abstract

1374843 Brush making machines H ZAHORANSKY [trading as ANTON ZAHORANSKY] 7 Jan 1972 [7 Jan 1971] 872/72 Heading A4K [Also in Division B3] In a brush making machine having at least two drilling tools B1, B2 and a filling tool S1 positioned between two adjacent drilling tools, the tools are all located on one side of a carrier 7 comprising at least two members 9, 10 and 11, 12 each member supporting a workpiece holder 16 at each end, being mounted for rotation about a horizontal axis 8 independent of the other members and being moveable along the axis together with the other members, and axis 8 is carried by a support 6 which is moveable towards and away from the tools. During a working cycle of the machine, the two members are alternately rotated through 180 degrees such that a brush blank is collected by one end of the member being rotated and is presented to one of the drilling tools and a filled brush blank at the other end is presented to a shearing station and the whole of the carrier 7 is displaced along the axis 8 by a distance a corresponding to the distance between axes of adjacent tools such that the drilled brush blanks are presented to the filling tool and the completed brushes are removed, displacement of the carrier taking place alternately in opposite directions. Each member 9, 10 and 11, 12 comprises parallel struts 13, 14 to which the workpiece holders 16 are pivotally secured by studs 35, each workpiece holder being U-shaped in side profile and provided with jaws 401 for clamping the brush blank. Pivotal movement of the workpiece holders relative to the tools so that work may be carried out over the whole surface area of a blank is effected by ball races 43 running on a circular disc 45 having one portion fixed relative to the carrier 7 and one portion 47 axially displaceable relative to the carrier 7. Movement of the member through 180 degrees is effected by an hydraulic or pneumatic rack drive 80, 410 engaging with a freewheel gear 412. When rotation has been effected so that a brush blank is in a position to be worked on by one of the tools, the rack drive is disengaged from the gear-wheel 412 and a pair of teeth 506 on a fine adjustment rod engage with the gear-wheel such that pivotal movement of the workpiece holders is controlled by a template 501 connected to the rod 505 by a lever 502. The shearing station has a shearing head 92 having a rotary cutting roller 93, a fixed blade 93a and coaxially with the cutting roller a sensing roller (95) Fig. 16 (not shown) which runs along the edge of a cutting template 91 secured to the workpiece holder. A cleaning device 307 is provided on the carrier 100 on which the shearing head is mounted, carrier 100 being vertically adjustable on guide bars 302 which are moveable longitudinally of the machine. A brush making machine may be provided with three drilling tools and two filling tools in which case carrier 7 comprises four members Fig. 7 (not shown). In a modification Fig. 8 (not shown) each member of the carrier may have four workpiece holders spaced equidistantly about the axis 8, the members being rotated through 90 degrees to present a further blank to a tool instead of 180 degrees. (For Figures see next page)