Accumulation conveyor.

摘要

An accumulation conveyor (25) includes a plurality of product conveying zones (A,B....N) arranged in tandem, each zone including a series of conveying rollers (30). Each zone includes an actuator (38) for moving a drive belt (40) against the rollers (30) to drive them. Each zone includes a product sensor (42) comprising a mechanical sensor (46) and a valve (62). The valve (62) is pneumatically coupled to the actuator (38) of an upstream zone for causing operation thereof. When a particular one of the actuators (38) is operated, the mechanical sensor (42) positioned in its zone is retracted below the conveying rollers (30). <IMAGE>