Conversion system tooling heater

Details Conversion system tooling heater Conversion system tooling heater

1992-09-02

1994-01-11

Larson, Lowell A.

Metal deforming

With temperature modification of tool or of specified...

Of tool

219250, 413 55, 83881, B21D 3716, D06F 7526

Patent

active

052770478

ABSTRACT:
The residual of an easy open can end is controlled by a band heater mounted on the anvil in conversion system tooling. The separation at closest approach of the score and anvil in the conversion tooling is altered as necessary by thermal expansion and contraction of the anvil as determined by the power supplied to the band heater. An electrical circuit supplies power to the heater and includes a thermocouple for maintaining the anvil at a set temperature. A loop control periodically diverts a finished end from the conveyor, measures the residual and adjusts power to the heater if necessary to bring the residual into specification.

REFERENCES:
patent: 3584487 (1971-06-01), Carlson
patent: 4624125 (1986-11-01), Bulso, Jr. et al.
patent: 4891529 (1990-01-01), Braun et al.
patent: 4958430 (1990-09-01), Grieb et al.
patent: 4989433 (1991-02-01), Harmon et al.

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