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Package strapping machine

  • US 4,575,994 A
  • Filed: 11/29/1984
  • Issued: 03/18/1986
  • Est. Priority Date: 12/05/1983
  • Status: Expired due to Term
First Claim
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1. A package strapping machine comprising a top board on which a package to be strapped is loaded and having an elongated opening therein for allowing a strap which is to be strapped around a package to be pulled therethrough, a base plate disposed under said top board, a main shaft held on said base plate in parallel with the elongation of said opening, a pivotal member adapted to transversely turn pivotally on said main shaft and having a lateral projection on its upper free end for allowing an overlapping portion of said strap to be fed beneath said lateral projection parallel to said elongated opening to be pressed against the under surface of said lateral projection, the length of said lateral projection measured in the direction traversing the path along which said strap is fed being substantially equal to the breadth of said strap, two clamps and a pressing means mounted on said pivotal member under said lateral projection and adapted to move up and down so as to press said strap against the under surface of said lateral projection, a cam mechanism mounted on said pivotal member under said two clamps and said pressing means so as to impart up-and-down motion to said two clamps and said pressing means, a welding means for welding said overlapping portion, and a sidepiece secured to the under surface of said top board and having a surface flush with a longitudinal edge of said elongated opening, means for pivoting said pivotal member to an upright position so that the end face of said lateral projection contacts said surface of said sidepiece thereby forming a guideway through which the strap is inserted beneath said lateral projection.

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