DEVICE AND METHOD FOR SENSING A CHANGE OF YARN FEED BOBBIN

摘要

A device for sensing the change of feed bobbin for a yarn fed to a textile machine and originating from a first bobbin (B1) or a second bobbin (B2) connected together in head-tail manner comprises at least one first sensor (8) and one second sensor (9) at a passage section (7) of a support body (2), a control unit (10) associated with said first sensor (8) and second sensor (9), said first sensor (8) and said second sensor (9) generating first and second presence signals when the yarn unwound from the first bobbin (B1) or from the second bobbin (B2) passes in front of said first sensor (8) or second sensor (9), said control unit (10) receiving as input said first and/or second presence signal to generate at least one output signal representative of the first bobbin (B1) or of the second bobbin (B2) on the basis of said first or second presence signal.