Abstract: A spindle drive type winding apparatus wherein a spindle onto which a bobbin for winding a yarn thereonto to form a yarn package is inserted is driven so that a predetermined winding factor is controlled in accordance with a predetermined program. The spindle drive type winding apparatus is provided with a control device which comprises:a peripheral speed detector for detecting the peripheral speed of the yarn package and generating a peripheral speed signal;a control for controlling the rotational speed of the spindle and generating a control signal;a circuit for calculating the wound amount of the yarn package based on the peripheral speed signal emitted from the peripheral speed detector and the signal emitted from the control and for generating a radius signal; anda function generator for emitting a programmed winding signal obtained in accordance with a pattern based on theradius signal emitted from the calculating circuit.

Abstract: A spindle drive type yarn winding apparatus comprises a yarn traverse device and a spindle for inserting a bobbin.The apparatus further comprises:mechanism for adjusting the wind ratio connected to the traverse device or the spindle;a first synchronous motor connected to the traverse device and driving the traverse device;a second synchronous motor connected to the spindle and driving the spindle; anda frequency variable power source capable of connecting to both the first and second motors.The apparatus can wind a yarn at a constant wind ratio.

Abstract: A bobbin holder comprises a rotatable support device and a holding device mounted on the support device for holding a bobbin inserted thereon. The bobbin holding device comprises a pair of bobbin holding members made of an elastomer. Each bobbin holding member has a cylindrical portion and a coned disc portion extending from the cylindrical portion and having an outer surface for engaging the bobbin. The bobbin holding device further includes a cylindrical spacer inerted onto the cylindrical portions of the pair of bobbin holding members, and a device for axially urging the coned disc portions of the bobbin holding members so as to expand said coned disc portions.

Abstract: A safety device of a spindle drive type winding apparatus wherein the rotational speed of a spindle on which a yarn package is formed is controlled in accordance with a peripheral speed of a yarn package formed on the spindle or tension in yarn to be wound to form a yarn package in such a manner that the rotational speed is gradually decreased during a normal winding operation. The device comprises:a member for detecting the driving rotational speed of the spindle;a minimum value holding member for holding the minimum value of the driving rotational speed of the spindle from the start of the normal winding operation to the time just before the measurement of the rotational speed by means of the detecting member; anda member for comparing the rotational speed detected by the detecting member with the minimum value held in the minimum value holding member and for emitting a stop signal to the winding apparatus when the rotational speed is larger than the minimum value by at least a predetermined allowance.