Abstract: Disclosed is a linear motor that can exert a high propulsive force and reduce cogging. A stator has a plurality of core units in a stroke direction. Each of the core units has a first core having a first magnetic pole and a second magnetic pole, which is different in polarity from the first magnetic pole, coils wound around the first core, a second core having a third magnetic pole and a fourth magnetic pole, which is different in polarity from the third magnetic pole, and coils wound around the second core. The third magnetic pole faces the first magnetic pole, and the fourth magnetic pole faces the second magnetic pole. A movable element is sandwiched between the first magnetic poles and the third magnetic poles, and between the second magnetic poles and the fourth magnetic poles.

Abstract: Thread-guiding device for apparatus for winding a thread onto a support rotatable by associated actuating means, at least one element for receiving and guiding the thread to be wound, the element for receiving and guiding the thread to be wound being integral with a thread guiding device of the magnetic/electromagnetic.

Abstract: An electrostatic actuator is described, which can be used for moving a yarn fed continuously in a textile machine in a direction orthogonal to the longitudinal direction of the yarn, between two end positions.

Abstract: A device for winding, at high speed, a yarn onto a rotating support comprises a yarn delivery system, displaced so as to undergo a to-and-fro movement parallel to the surface of said support with rapid deceleration and acceleration at the point of reversal of the to-and-fro movement. A depositing yarn guide of the delivery system is displaced by means of a moving element or cursor associated with a magnetized plate of a linear motor, supplied with two-phase or three-phase current. The stator is formed by at least one assembly of elementary modules placed either face to face or placed so that each lies in the extension of another, each having a plurality of C-shaped magnetic circuits that define, between the ends of their separated legs, an airgap inside which the magnetized plate is positioned, comprising an alternation of North and South poles (N and S), which constitutes the moving element that displaces the cursor carrying the yarn guide.

Abstract: Thread-guiding device for apparatus for winding a thread onto a support rotatable by associated actuating means, at least one element for receiving and guiding the thread to be wound, the element for receiving and guiding the thread to be wound being integral with a thread guiding device of the magnetic/electromagnetic.

Abstract: This device for winding, at high speed, a yarn onto a rotating support and comprising a yarn delivery system (5, 6), displaced so as to undergo a to-and-fro movement parallel to the surface of said support with rapid deceleration and acceleration at the point of reversal of the to-and-fro movement, is noteworthy in that the depositing yarn guide (6) is displaced by means of a moving element or cursor (5) associated with a magnetized plate (1) of a linear motor, supplied with two-phase or three-phase current, and in which the stator is formed by at least one assembly of elementary modules placed either face to face or placed so that each lies in the extension of another, each having a plurality of C-shaped magnetic circuits (4) that define, between the ends of their separated legs, an airgap inside which the magnetized plate (1) is positioned, comprising an alternation of North and South poles (N and S), which constitutes the moving element that displaces the cursor (5) carrying the yarn guide (6).

Abstract: A thread guide (33) for traversing and guiding a thread (5) in a rotating winding bobbin (1) for producing a cross-wound bobbin in a bobbin winder of a textile machine by controlling vibrations of the thread guide. The thread guide (33) is permanently and directly connected to at least one energy accumulator (20,21) throughout the entire traversing motion. The potential energy of the energy accumulator (20,21) increases continuously after the dead center of the traversing area. A substantially harmonious oscillating mechanical system is thus formed with the thread guide.

Abstract: A winding device (1) for a textile machine producing cheeses (8), having a cheese drive mechanism (5) acting on a tube receiving plate (6), a separately driveable yam cross-winding device (10), and a support and clamping roller (9), in frictional contact with the cheese (8) during winding operation. A braking device (20) is assigned for braking the support and clamping roller (9) when the winding operation is interrupted.

Abstract: A textile machine thread traversing device includes a traversing arm and a holding device to retain the arm as it moves in a back and forth motion. A drive mechanism is connected to the holding device to rotate the holding device relative to a turning axis. A programmable control system is configured with the drive mechanism and includes a detecting device disposed to detect the angular position of the traversing arm and to control the drive mechanism as a function of the angular position.

Abstract: A winding device (1) for a textile machine producing cheeses (8), having a cheese drive mechanism (5) acting on a tube receiving plate (6), a separately driveable yarn cross-winding device (10), and a support and clamping roller (9), in frictional contact with the cheese (8) during winding operation. A braking device (20) is assigned for braking the support and clamping roller (9) when the winding operation is interrupted.

Abstract: A yarn guide imparts a traversing motion to a yarn being delivered to a rotationally driven takeup bobbin in a textile yarn winding operation to create a cross-wound bobbin, or cheese. The yarn guide includes a fork-like yarn guide pivoted about a pivot axis substantially perpendicular to the axis of the takeup bobbin, and an electromagnetic mechanism for driving the guide. The electromagnetic mechanism includes an air gap, a plurality of magnets disposed along the air gap, a plurality of yokes and at least one electrical coil extending into and moveable along the air gap with the traversing yarn guide. The magnets are disposed along the air gap and generate magnetic field lines which extend in a substantially perpendicular direction through the air gap.