A cable tensioning system including: a body defining a balance point; a cable receiving area having gripping elements configured to grip and bias a cable relative to the cable tensioning system; and a sensor configured to sense changes to a balance of the body about the balance point, wherein the cable tensioning system is configured to maintain the cable within a preset range of tensions

Method and system using a device for feeding yarn to a textile machine, operating discontinuously or with alternating motion, and a device compensating for changes in conditions for feeding or taking up yarn by the textile machine, the compensator device including a movable compensator that performs this compensation to maintain constant yarn tension even when conditions for feeding or taking up yarn change, the movable compensator being rigid and connected to an electric actuator, a control unit of this actuator capable of detecting displacement of the movable compensator from a predetermined resting position when there is a change in take-up or feeding of the yarn and capable of returning the movable compensator to the resting position after such change. Provision is made for continuously detecting yarn tension and operating the electric actuator to maintain tension constant. The compensator device used in this system operating according to the method.

A cable tension control device includes a pair of first active rollers clamping a cable therebetween, a first driver driving the first active rollers, a pair of second active rollers clamping the cable therebetween at an upstream position from the first active rollers, a second driver driving the second active rollers, a floating roller arranged between the first active rollers and the second active rollers and exerting a pushing force on the cable, and an actuator driving the floating roller to move vertically to adjust the pushing force exerted on the cable. A tension force applied on the cable is controlled to be equal to a predetermined tension force by controlling the pushing force and by controlling a speed difference between a first speed at which the first active rollers convey the cable forward and a second speed at which the second active rollers convey the cable forward.

A delivery device with actuators for delivering yarns in a textile machine, controllers for controlling the actuators, which comprise produce measurement signals as a measure of the drive torque of the actuators, and monitors for monitoring the tensions of the yarns using the measurement signals. Additionally, at least one embodiment concerns a method for monitoring the tension of yarns which are delivered in a textile machine by means of actuators, comprising producing measurement signals as a measure of the drive torque of the actuators, which is a measure of yarn tension, and monitoring the tension of the yarns using the measurement signals.

Method and system for feeding a twisted metal cable braided into a plurality of braids or a flat wire from a support or spool to a winder or winding machine, including unwinding the cable or wire from the spool, measuring a property of the cable or wire from among its tension, velocity and quantity, possible adjustment of the property and feeding the cable or wire to the machine with the property constant. The cable or wire is unwound in a controlled way in a direction at right angles to the axis of the spool directly from such spool or through a return member which receives the cable or wire from the spool from which it is unwound in an uncontrolled way, such controlled unwinding preventing the cable changing the structure of its braids through loosening or stretching and the wire undergoes torsion before its property is measured.

A system (10) for winding multiple elongated elements (12, 14) simultaneously under a substantially same tension on a single spool (16) comprises one pendulum arm (18) and one set of actuators (22) acting on the pendulum arm (18) and balancing with the sum of tensions of each elongated element (12, 14). The system (10) further comprises one or more balancing arms (26, 40): A first balancing arm (26) is attached to the pendulum arm (18), the other balancing arms (if any) are attached to the first balancing arm (26). Each balancing arm (26) is pivotable upon a balancing arm axis (28). A first set of one or more reversing pulleys (30) is positioned at one side of the first balancing arm axis (28) and a second set of one or more reversing pulleys (32) is positioned at the other side of said balancing arm axis (28). Each of the reversing pulleys (30, 32) guides an elongated element (12, 14) to be wound.

A method for controlling a pull motor, the method including generating an error signal based on a difference between a signal representing a force applied on a wire by a push motor and a signal representing a desired force applied on the wire by the push motor; comparing a signal representing a force applied on the wire by the pull motor and the error signal, and generating an output signal based on the comparison; and controlling an armature current of the pull motor based on the output signal is disclosed.

The invention relates to a system of spinning yarn that comprises a filament feed system configured to vary the tension applied to at least two continuous filaments before the filaments are introduced to a roving and twisted to form a yarn. The invention allows the filaments to be introduced to the roving when under tension, under no tension, or when under slack at set distances from the roving centre line by a specialized two filament guide.

A method for unwinding yarn is provided that allows for maximizing the draft of the yarn, while monitoring tension. The method includes providing a yarn package including elastic yarn; choosing a selected draft for said elastic yarn; unwinding the elastic yarn from the yarn package from a driven roll to yarn processing equipment at the selected draft which is determined by a ratio of a speed of the yarn at the yarn processing equipment to a speed of the driven roll; measuring tension in the elastic yarn; and providing an alarm when said tension reaches a critical level.

A method for obtaining a diameter is provided. The method is to be applied to a multi-roller module system and includes: designating a target linear velocity associated with a wire moving in the multi-roller module system, and a value of a presumed diameter parameter associated with a diameter of a main roller; calculating an initial rotational speed of the main roller; measuring a current rotational speed of the fixed-diameter rotating component; calculating an actual linear velocity of the wire; and determining that the value of the presumed diameter parameter equals an actual diameter of the main roller when it is determined that the ratio of the target linear velocity to the actual linear velocity is equal to one.