Track intersection pin guide

Details Track intersection pin guide Track intersection pin guide

1992-07-31

1994-01-04

Dayoan, D. Glenn

Conveyors: power-driven

Conveyor arrangement for selecting among plural sources or...

By loading or unloading section at selected one of a...

198372, B65G 4746

Patent

active

052752739

ABSTRACT:
A non-powered, self-position-adjusting track intersection pin guide, or switch, is provided having a plate member that pivots in the plane of the crossing guide tracks that move article diverter shoes of a positive displacement sortation conveyor in a predetermined manner relative to the supporting surface of the conveyor. The plate member pivots between a first position guiding the diverter shoe guide elements along a first path and a second position guiding the diverter shoe guide elements along a second path. The plate member includes first and second cam members defining first and second cam surfaces. First and second guiding surfaces are additionally defined on the plate member, whereby the cam surfaces are selectively positioned in the first and second paths for actuations by a guide element moving along the respective path in order to rotate the cam surfaces and the guiding surfaces about a common pivot in order to guide movement of the guide elements. The pivot is upstream of the first and second cam surfaces with respect to travel of the guide elements in order to provide switching between first and second positions through an extremely small arc of travel. The cam surfaces are positioned in the guide tracks in a manner that they are actuated by the guide bearing of the diverter shoes wherein the guiding surfaces are positioned to act on the much narrower guide pin of the diverter shoes. Each of the cam members includes an additional cam surface for actuation by the guide pin of the diverter shoes in order to actuate the plate between first and second positions in the event that a bearing is missing from the diverter shoes, or is malfunctioning.

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Drawing of a prior art track intersection pin guide ("Crossing Assembly 30.degree."), Apr., 1990.

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