Patent ID: 9126799
Filing Date: 2015-09-08
Classification: B65H,D03D,D04B

Abstract:
1. A yarn storage feed device for unwinding yarn from a corresponding bobbin to be fed to a textile machine, the yarn storage feed device comprising: a casing; a control unit; a rotary drum driven by a respective electric motor, the motor being controlled and commanded by the control unit, the yarn winding onto the rotary drum in the form of turns; and an optical sensor, connected to the control unit and arranged to sense movement of the yarn, said optical sensor comprising: at least one fixed part with which said light emitter and light receiver elements are associated, said at least one fixed part comprising a fixed annular member coaxial with the rotary drum, the fixed annular member defining a void and being positioned about the rotary drum, wherein at least one of the plurality of light emitter elements, the plurality of light receiver elements, and combinations thereof are associated with the fixed annular member wherein the fixed annular member is located in a position to allow the yarn to move between said rotary drum and said fixed annular member,