US 5,509,594 AGranted

Device to control the feeding of the strap in a strapping machine

AssigneeOfficina Meccanica Sestese S.p.A.

InventorCesarino Maggioni

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Abstract

Device to control the feeding of the strap in a strapping machine, of the type wherein the strap (R) is guided on the periphery of at least one driving wheel (1) and at least one pressure wheel (4) is provided to press the strap (R) against the periphery of said driving wheel (1) so as to guarantee its feeding. An arm (8) is provided to oscillate between a guiding position, in which the arm at least partly surrounds the periphery of the driving wheel (1) so as to form a guiding channel (C3) for the strap (R), and an opening position of release, away from the driving wheel (1), into which the arm is moved by said strap when it stops, and in which it controls the removal of the pressure wheel (4) so as to release the feeding pressure. The oscillating arm (8) extends, beyond its part surrounding the periphery of the driving wheel (1), into a counter-bent portion which determines a saddle path (C4) for the strap (R).

Claims15

Dependent claims

A device to control feeding of a strap in a strapping machine of the type wherein said strap (R) is guided on a periphery of at least one driving wheel (1) and at least one pressure wheel (4), said at least one pressure wheel (4) is provided to press said strap (R) against the periphery of said driving wheel (1) so as to secure proper feeding , said device comprising:

an arm (8) oscillating between a guiding position and an opening position;
wherein in said guiding position, said arm (8) at least partly surrounds the periphery of said driving wheel (1) so as to form a guiding channel (C3) for said strap (R);
said arm (8) being movable by said strap to its opening position, means responsive to movement of said arm (8) to its opening position for controlling the stopping of said driving wheel (1);
and
said at least one pressure wheel (4) is associated with said oscillating arm (8) such that the at least one pressure wheel (4) is moved away from said driving wheel (1), so as to release a feeding pressure when said arm (8) is moved to its opening position.

2 more elements

Dependencies are inferred from the claim text.