Strapack Corporation

Kenji Fujii

Tsutomu Tagomori

Yasunori Sakaki

Seiichiro Koyama

Yosikatsu Aizawa

A strapping apparatus advances a band around an object to be strapped and then retracts and tightens the band against the object. Retraction of the band is performed by a driven roller. A touch roller is displaceable toward the driven roller to press the band thereagainst. The outer periphery of the driven roller comprises a flexible high friction material, and a circumferentially extending low friction material embedded in the high friction material and normally projecting radially outwardly therebeyond. When the band travels against the low-friction material it encounters little resistance. When the touch roller pushes the band against the driven roller, the low-friction material is pushed radially inwardly, enabling the band to contact and be driven by the high-friction material.

Band feeding and tightening apparatus for strapping machine

An arch guide for a strapping machine comprises corner sections interconnected by linear sections. Each of those sections includes inner and outer peripheral portions disposed, respectively, closer to and farther from a center of the guide. The inner and outer portions form a guide passage for the band, the passage being open at a side facing a guide plate. The open side of the arch guide is yieldably urged against the guide plate to close the open side. The inner portion extends toward the guide plate at an inwardly directed inclination to facilitate movement of the arch guide away from the guide plate when the band is being withdrawn from the passage. A guide extends from the leading end of a linear section into a trailing end of a corner section for directing an advancing band toward the outer portion of the corner section. The outer portion of at least the linear sections are yieldable in a direction away from the inner portion in a manner increasing the height of the height of the open side of the band passage. The guide plate carries an elastic material covered by a sheet of anti-wear, anti-friction material against which the open side of the arch guide is biased.

Growing community of inventors

Yamato, Japan

Kenji Fujii