Patent ID: 6679426
Filing Date: 2004-01-20
Classification: B65B,B65G,G06M

Abstract:
Device for counting bars (10) that are being translated, in which the displacement of the bars towards and through the counting station is obtained by a worm-screw mechanism (11) which displaces the bars in a direction perpendicular to the axes of the bars themselves, said worm-screw being provided with a helical thread which defines, in any given plane passing through the longitudinal axis of the screw itself, a plurality of grooves or grooves (19) throughout the length of the screw, each of the said grooves accommodating at least one bar (17) being moved from one loading station to counting means (15) having a measuring axis (21), and in which the screw has a variable normal pitch (18) which increases in at least one portion of its length, wherein the said screw (11) presents, for at least part of its length, grooves (19) having at least part of a wall (23) with variable pitch increasing more rapidly than the normal pitch (18), the said increase in pitch being obtained by providing one of the walls (23) of each groove with means designed to force the position of the bars that may be present in a given groove into a plane that is substantially not parallel to the specific axis (21) of said counting means (15).