Cam follower assembly for indexing conveyors

Details Cam follower assembly for indexing conveyors Cam follower assembly for indexing conveyors

1984-10-02

1986-02-04

Reeves, Robert B.

Conveyors: power-driven

Conveyor section

Reciprocating conveying surface

74 8915, 104167, 198747, B65G 2504, B61B 1300

Patent

active

045679797

ABSTRACT:
In an indexing conveyor that employs a helically grooved drive shaft to propel a shuttle carriage that is, in turn, coupled with a product-bearing dolly, the carriage is provided with a drive connection assembly comprising a pair of follower rollers that are received within the drive shaft groove. The rollers are carried by a swivel bar on opposite sides of its axis, which is perpendicular to the axis of rotation of the drive shaft. The assembly further includes a spring that biases the swivel bar in one direction so as to maintain the followers in engagement with the leading and trailing surfaces respectively of the shaft within the groove when the shaft is at rest or rotating at constant speed. Under rapid acceleration or deceleration of the drive shaft, pivotal movement in the opposite direction against the action of the spring causes both followers to engage the trailing surface during acceleration and the leading surface during deceleration. Impact loading in the drive connection is thereby eliminated and precise positioning of the product-bearing dolly is assured.

REFERENCES:
patent: 3331257 (1967-07-01), Gerber
patent: 3842961 (1974-10-01), Burson
patent: 4322987 (1982-04-01), Gartner
patent: 4440038 (1984-04-01), Potter

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