Band tightening apparatus in a strapping machine

Details Band tightening apparatus in a strapping machine Band tightening apparatus in a strapping machine

1988-05-20

1990-04-03

Culver, Horace M.

Package making

Partial cover application

Band or tube

100 29, 100 32, B65B 1322, B65B 1306

Patent

active

049129082

ABSTRACT:
A strapping machine applies an article around a band. The band is advanced around an arch guide by forward-rotation rollers and is retracted or restored by reverse-rotation rollers. The reverse-rotation rollers comprise a reverse-rotation drive roller and a reverse-rotation touch roller which define a nip in which the band is gripped. The touch roller is displaced downwardly toward the drive roller by a cam which displaces an arm. The arm pulls downwardly upon a coil spring which is operably connected to the touch roller. A manual adjustment is provided which enables the amount of displacement of the touch roller to be easily adjusted. The cam may include projections of different radial dimension to exert different amounts of force on the band as the cam rotates.

REFERENCES:
patent: 4020756 (1977-05-01), Weiss
patent: 4120239 (1978-10-01), Pasic et al.
patent: 4383881 (1983-05-01), Sakaki
patent: 4635541 (1987-01-01), Kasuga
patent: 4724659 (1988-02-01), Mori et al.

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