Dome-head parts orientation and singling feed comprizes rotation-symmetric smooth-faced body with variably-pitched spiral guide contour facing orienting flat.

摘要

The conveyor body (5) is rotated symmetrically round an axis (4) and has amooth surfce (5') powered round the inclined axis (4). The smooth body surface (5') has a spiralling raised contour (6) and is confronted by a flat (7) which is so arranged relative the body (5) that the vertical projection of a point from the smooth surface to the front of the flat element (7) describes a vertically ascending movement on the flat element (7) as the body rotates. The flat is spaced from the smooth body surface by the height of the spiralling contour (6) and the contour pitch varies along the body such as to increase with increasing distance from the screw etc reservoir (3) and/or from screw feeder. Thus in the area of small pitch difference, this difference at least equals the screw head size as compared with the area of large pitch difference where the difference is the length of the screw at least. The conveyor body is powered by a variable speed motor (9), preferably stepping motor, giving a body rotation speed round axis (4) of 0.05 Hz. The screws are accepted by rail or tube (10) and/or a hole in the main body (1).