| 摘要 |
An apparatus for regulating the tension of a strap wound around a package on a package strapping machine. The apparatus has a frame having a package support surface provided with a strap guiding frame into which the package is inserted and into which the strap is fed to form a strap loop around the package, a driving roller rotatably mounted on the frame for bearing against the strap and rotatable in a direction for tensioning the strap to tighten the strap around the inserted package, a press roller movable toward and away from the driving roller for holding the strap in driving engagement against the driving roller or releasing it therefrom, the press roller pressure being adjustable. A strap conduit is pivotally mounted on the frame for passing the strap from the driving roller to the strap guiding frame, a linkage is movably mounted on the frame below the strap conduit, a spring has one end secured to the strap conduit and the other end secured to the linkages and a rod connects the linkage to the adjusting means and is movable for changing the tension of the spring for adjusting the pressure applied by the press roller to the driving roller.
|
