Patent ID: 8683919
Filing Date: 2014-04-01
Classification: B29C,B65B

Abstract:
1. A strap forming assembly in a strapping machine for feeding a strapping material around a load, positioning, tensioning and sealing the strapping material around the load, the strapping machine having a feed head for feeding the strapping material into the strapping machine, the feed head having a driven feed wheel includes a feed wheel groove, a strap chute through which the strapping material is passed and a sealing head to seal overlapping courses of the strapping material to one another, the strapping material traversing from the feed head, through sealing head and the strap chute to define a strap path, the strap forming assembly, comprising: a first forming wheel having a circumferential groove formed in a rim thereof; and a second forming wheel cooperating with the first forming wheel and the driven feed wheel, the second forming wheel having a mating a circumferential crown extending therefrom, wherein the first and second forming wheels cooperate to define a forming wheel nip therebetween, the forming wheel nip being non-planar and wherein strapping material fed into the forming wheel nip is permanently, longitudinally deformed, and wherein the second forming wheel cooperates with the driven feed wheel, the driven feed wheel having a groove for receiving the circumferential crown and defining a nip therebetween, the nip configured to pre-form the strapping material prior to introduction to the forming wheel nip.