Cam driving vibratory feed - has lever and roller bearings aligned on straight lines passing through cam bearing

摘要

The cam drives the vibratory feed for a rotary sheet-printing press. Its movement takes place in four stages of equal duration, having a roller-ended control lever and a spring guide lever. The levers (4,7) have the same dimensions and bear via rollers (3,6) against a cam (2), their bearings (5,8) and that (1) of the cam being in a first straight line (g1), while those (3.1, 6.1) of the rollers and the cam bearing are in a second straight line (g2). The roller bearings are at turning points in the movement pattern and symmetrical in relation to a reversal point. ADVANTAGE - Compact, low-cost and suitable for high working speeds.