Apparatus for lifting and lowering seaming head in can end seami

Details Apparatus for lifting and lowering seaming head in can end seami Apparatus for lifting and lowering seaming head in can end seami

1991-07-01

1992-08-18

Kisliuk, Bruce M.

Sheet metal container making

Apparatus applying closure to receptacle

Seamer

413 27, B21D 5126

Patent

active

051393824

ABSTRACT:
A can end double-seaming machine has a seaming head vertically movably mounted on a base and supporting a seaming chuck and a seaming roll. The seaming head is guided for its vertical movement by support posts on the base. Rotors are rotatably threaded on the support posts and rotatable by a motor for lifting and lowering the seaming head. A controller controls the motor to elevate the seaming head upwardly of a predetermined seaming position, then lower the seaming head downwardly of the seaming position, and thereafter elevate the seaming head to the seaming position, thereby positioning the seaming head in the seaming position. Since the seaming head is lowered downwardly of the seaming position and then lifted back to the seaming position, the seaming head is reliably and accurately be brought into the seaming position without a positional error which would otherwise be caused by the backlash between the rotors and the support posts.

REFERENCES:
patent: 796927 (1905-08-01), McGinnis
patent: 1209233 (1916-12-01), Troyner
patent: 2392728 (1946-01-01), Diezel
patent: 3030900 (1962-04-01), Munschauer et al.
patent: 3910212 (1975-10-01), Konoki

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