Patent ID: 6463847
Filing Date: 2002-10-15
Classification: B65B

Abstract:
A device for hoop-casing an object by means of a thermo-weldable plastic strip (1) strapped around it, in whichthe device is provided with a means for tensioning the plastic strip (1) and a means for friction-welding two mutually overlapping strip portions of the tensioned plastic strip (1) between two welding jaws (2, 3), each of these means can be driven by a motor, each of these motors can be controlled by a switch (4, 5) via a control circuit, each of these switches (4, 5) can be actuated by a cam (6, 7), the cams (6, 7) can be rotated about a common rotation axis (8), while one of the cams (6) can be driven by means of a control shaft (10), at least one of the welding jaws (2) can be displaced in a direction orthogonal to the rotation axis (8) while being adjustable by means of a cam gear (13), and the cam gear (13) comprises a cam disk (14) that can be rotated about the rotation axis (8) along with the cam (6) that can be driven by means of the control shaft (10), and a telescopic tappet (15) that is arranged between the cam disk (14) and the displaceable welding jaw (2) and is telescopically retractable or extensible in a direction orthogonal to the rotation axis (8) and is spring-loaded in a direction of extension thereof, characterized in that: a rotational position of the cam disk (14) is adjustable relative to the cam (6) that can be driven by means of the control shaft (10), when performing jointly a rotation about the rotation axis (8), the cam disk (14) and the cam (6) driven by means of the control shaft (10) and adjusted with respect to the cam disk (14) can be rotated in restricted manner with respect to the device between end positions, and the other cam (7) can be rotated in restricted manner between end positions.