US 5,540,142 AGranted

Machine for strapping sheet metal coil

AssigneeSignode Corporation

InventorsJan Mieleszuk, Stanislaw Witczak

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Abstract

In a machine for strapping a sheet metal coil, two rollers support such a coil with its axis extending transversely. A carriage mounted upon a fixed base is longitudinally movable toward and away from the rollers. A strapping head cradle mounted upon the carriage is movable with the carriage and is pivotable about a transverse axis. Two strap-guiding arms mounted upon the cradle, extend forwardly, and are movable with the cradle, pivotable with the cradle, and pivotable on the cradle between a closed position defining a closed path for a strap and an opened position enabling the strap-guiding arms to clear the supported coil when the cradle is moved with the carriage. A coil-sensing arm extending over the strap-guiding arms is mounted upon the carriage, movable with the carriage, and pivotable about a transverse axis. Fluid-powered mechanisms coact with the cradle and with the coil-sensing arm, by means of a pivotal connection defining a transverse axis, for pivoting the cradle less rapidly and the coil-sensing arm simultaneously but more rapidly.

Claims13

Dependent claims

A machine for strapping a sheet metal coil, which has an eye defining an axis of said coil, comprising:

a fixed base;
support means for supporting said coil with said axis extending transversely;
a carriage movably mounted upon said fixed base so as to be movable longitudinally toward and away from said support means and said coil supported upon said support means;
a cradle pivotably mounted upon said carriage about a transverse axis so as to be pivotable toward and away from said coil;
a pair of strap-guiding arms pivotably mounted upon said cradle between a closed position wherein said strap-guiding arms define a path for feeding a strap through said eye of said coil supported upon said support means, and an open position wherein said strap-guiding arms are remote from said coil supported upon said support means so as to permit a coil to be mounted upon or removed from said support means;
a coil-sensing arm mounted upon said carriage for engagement with said coil when said cradle is pivotably moved toward said coil;
and
means for pivoting said strap-guiding arms, when said coil-sensing arm engages said coil supported upon said support means such that said strap-guiding arms are moved to said closed position so as to define said path which extends along said axis defined by said eye of said coil supported upon said support means.

5 more elements

Dependencies are inferred from the claim text.