Abstract: Device and process for the regulation of thread winding onto a bobbin by applying a desired contact pressure Pc of the operating bobbin, providing the bobbin-holder arm with a counterweighing counterthrust Pp, on the basis of a pre-established trend of the value of Pc in relation to the advance length of the bobbin, indicating the weight of the bobbin in relation to the ratio between the length reached and indicating the rising a angle of the bobbin-holder arm, calculating the weight component due to the bobbin and said arm and applying a counterthrust Pp equal to the difference between said component and the pre-established value of the contact pressure Pc referred to the length reached.

Abstract: Process for measuring the length of the yarn wound onto a bobbin which, at discreet intervals, determines the length of yarn wound in a tangential direction, the length of yarn wound in an axial direction, combining them to obtain the precise partial length wound spirally onto the bobbin at each interval and integrating the partial lengths progressively indicated during the advancement of the bobbin to obtain the overall length.

Abstract: The invention relates to a device and a process for the handling and control of the yarn (1) in a crosswinding head of a crosswinding machine in bobbin (2) doffing operations, said crosswinding machine being equipped with a series of crosswinding heads and at least one service trolley (13), in which the yarn (1) run is moved to a definite position, near the end portion of its course from the pirn to the bobbin (2) and the yarn (1) is subsequently drawn from a handling device (12) of the service trolley (13), cut and, after removal of the bobbin (2), its end coming from the pirn, is arranged on a new winding tube.

Abstract: The invention relates to a device for the automatic doffing of bobbins in a crosswinding machine, of the type comprising a rolling chute (5) on which the bobbin is free to roll towards a conveyor belt (4), wherein said rolling chute (5) is hinged around a rotation pin (8), around which it can rotate varying the level difference between its ends, a flap (9) being hinged to the end of said rolling chute (5) facing the conveyor belt (4), whose portion facing the conveyor belt (4) slides on a fixed supporting counter-edge (11).

Abstract: The invention relates to a device and process for handling and controlling the yarn (2) in a crosswinding head of a crosswinding machine during the starting operations of a new lot, said crosswinding machine being equipped with a series of crosswinding heads and at least one service trolley (16), wherein the end of the yarn (2) of a new pirn is collected by the suction mouth (7) on the pirn (1) side and delivered to the joining device (9), from where it is, in turn, collected by the suction mouth (8) on the side of the bobbin and, after the suction mouth (8) has rotated until it is close to the driving and traversing cylinder (6), engaging the yarn (2) on its back during the movement, which is transferred from this to the handling device (15) of the service trolley (16).

Abstract: A method for joining textile yarns to restore their continuity each time this becomes necessary in a winding unit, wherein the method is implemented in a joining device which operates several successive steps, one following another, to achieve a continuous connection. The individual operations involved in the method for joining being independent of each other and being autonomous and flexible in their implementation, each implemented step being subjected to an acceptance check based on predetermined quality standards before proceeding to the next operation in the same joining cycle.

Abstract: A method and device for the continuous automatic monitoring and control of the tension to which yarn is subjected in a winding unit, in particular in an automatic bobbin winding unit, in which along the travel path the clamping force of the braking washers on the yarn is continuously and automatically controlled on the basis of parameters defining the type of yarn being wound and the operational, technical and geometrical characteristics of the feed package being unwound and those of the overlying bobbin under formation.

Abstract: A conveyor system for an automatic coning machine having coning units for unwinding thread from spools carried by disks. The system has a feeding conveyor for transporting the spools on carrying disks to the coning machine and a removal conveyor for transporting exhausted spool carrying disks from the coning machine. Passages traverse adjacent coning units which are interconnected to and between the conveying and removal conveyors. Feeders are provided for, at least, the feeding conveyor. The feeders are connected to and movable with the feeding conveyor, wherein the feeders are spaced apart from one another and wherein each of said feeders includes an engaging member for contacting a spool carrying disk and moving the spool carrying disk along the feeding conveyor, and a jutting member movably connected to the feeder which contacts the engaged spool carrier disk for guiding the spool carrier disk in a desired position along the conveyor.

Abstract: A conveyor system for an automatic coning machine having coning units for unwinding thread from spools carried by disks, wherein the system has a conveyor for feeding the spool carrying disks to the machine. A plurality of paths are connected to the feeding conveyor, wherein a path traverses an adjacent coning unit and includes a standby position adjacent the feeding conveyor for receiving spool carrying disks and an unwinding station at the coning unit for receiving spool carrying disks from the standby position.

Abstract: A method and apparatus serves to wind yarn on a forming bobbin driven by a grooved drive roller in a collection station, in such a manner as to prevent ribbing during the continuous superposing of the various layers of winding, hence rendering the subsequent technical operations to be undergone by the bobbin yarn both possible and simple. The apparatus includes a control unit having a keyboard, a mini-computer and a motive source which angularly positions the bobbin carrier arm such that the collection station operates in regions not in proximity with regions undergoing a ribbing effect.