Article strapping arrangement with a synchronous motors connecte

Details Article strapping arrangement with a synchronous motors connecte Article strapping arrangement with a synchronous motors connecte

1994-04-22

1995-11-21

Gerrity, Stephen F.

Presses

Binding

With automatic or material-triggered control

100 26, 100 29, B65B 1322

Patent

active

054677017

ABSTRACT:
A package strapper with three motor-driven mechanisms, specifically a strap feed, a strap stretcher, and a strap-end fastener. The mechanisms are mounted on a strap track that loops around the package. The strap feed includes at least two wheels, each forced against one side of the strap by a spring. The motor that drives the strap feed can be reversed. The strap-stretcher wheel is between the feed and the track and is partly loosely surrounded by a strap guide. One end of the guide opens into the track. The strap-feed motor and the strap-stretcher motor are asynchronous three-phase motors. They are connected to a frequency converter that supplies them with electricity of varying frequency and potential and controlled by controls or by a processor integrated into the frequency converter. A manually adjustable terminal strap-tension selector is connected to the controls or to the processor. The frequency of the electricity that powers the strap-stretcher motor is varied in accordance with the prescribed terminal tension. The electricity that powers the strap-feed motor is varied in accordance with frequency and phase.

REFERENCES:
patent: 3804001 (1974-04-01), Longerich et al.
patent: 3946921 (1976-03-01), Noguchi
patent: 4016023 (1977-04-01), Takami
patent: 4435945 (1984-03-01), Rohrig
patent: 5146847 (1992-09-01), Lyon et al.

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