The invention relates to a drafting system for conveying a sliver in the direction of an inlet opening of a vortex chamber of an air-jet spinning device, as well as to a method for operating a drafting system having an exit roller pair and at least one additional drafting system roller pair and/or apron roller pair, by means of which a sliver is supplied at a spinning station of an air-jet spinning machine for the production of a thread to a vortex chamber of an air-jet spinning device of the spinning station, wherein the exit roller pair can be driven decoupled from the at least one additional pair of drafting system rollers and/or apron rollers. In order to provide a method for operating a drawing system having a starting roller pair and at least one further stretching mill roller pair and/or a strand roller pair, and a drawing system, which allows a reliable preparation of the sliver end before the piecing process, it is provided that the starting roller pair is driven for combing the sliver end after a spinning interruption at a predetermined combing speed and the at least one stretching mill roller and/or belt roller pair upstream of the starting roller pair in the sliver direction is stopped or operated at a holding speed associated with the combing speed, which is at most 10% of the combing speed.

The invention relates to a drafting system for conveying a sliver in the direction of an inlet opening of a vortex chamber of an air-jet spinning device, as well as to a method for operating a drafting system having an exit roller pair and at least one additional drafting system roller pair and/or apron roller pair, by means of which a sliver is supplied at a spinning station of an air-jet spinning machine for the production of a thread to a vortex chamber of an air-jet spinning device of the spinning station, wherein the exit roller pair can be driven decoupled from the at least one additional pair of drafting system rollers and/or apron rollers. In order to provide a method for operating a drawing system having a starting roller pair and at least one further stretching mill roller pair and/or a strand roller pair, and a drawing system, which allows a reliable preparation of the sliver end before the piecing process, it is provided that the starting roller pair is driven for combing the sliver end after a spinning interruption at a predetermined combing speed and the at least one stretching mill roller and/or belt roller pair upstream of the starting roller pair in the sliver direction is stopped or operated at a holding speed associated with the combing speed, which is at most 10% of the combing speed.

A tensioning device for a spinning unit and/or stretching device. The tensioning device includes at least one roller, at least one belt, and at least one tension rod. The tensioning device can be transferred from a functional state into a non-functional state. The functional state is designed for positioning position the at least one roller in that the belt is designed and arranged for exerting a tension on the roller, in that the belt is further designed and arranged for running around a section of the roller and a section of the tension rod such that a tension is transferred from the tension rod onto the roller via the belt. In the non-functional state, the tensioning device is designed and configured such as to move the tension rod via tension on the belt, for removing the belt from the tension rod.

A tensioning device for a spinning unit and/or stretching device. The tensioning device includes at least one roller, at least one belt, and at least one tension rod. The tensioning device can be transferred from a functional state into a non-functional state. The functional state is designed for positioning position the at least one roller in that the belt is designed and arranged for exerting a tension on the roller, in that the belt is further designed and arranged for running around a section of the roller and a section of the tension rod such that a tension is transferred from the tension rod onto the roller via the belt. In the non-functional state, the tensioning device is designed and configured such as to move the tension rod via tension on the belt, for removing the belt from the tension rod.

A drafting device of a textile machine includes a roller and an opposed counter roller, each including a roller body and an axis of rotation, wherein the axis of rotation of one or both of the roller and the counter roller is mounted only at one end thereof. The roller is movably mounted between a resting position in which the roller body of the roller and of the counter roller are not in contact, and a load position in which the roller body of the roller and of the counter roller are pressed against one another along a contact region. The roller is movable from the resting position into a load position by moving into an intermediate position wherein the axes of rotation of the roller and of counter roller are aligned such that the contact region between the roller and the counter roller is smaller than in the load position of the roller.

A drafting device of a textile machine includes a roller and an opposed counter roller, each including a roller body and an axis of rotation, wherein the axis of rotation of one or both of the roller and the counter roller is mounted only at one end thereof. The roller is movably mounted between a resting position in which the roller body of the roller and of the counter roller are not in contact, and a load position in which the roller body of the roller and of the counter roller are pressed against one another along a contact region. The roller is movable from the resting position into a load position by moving into an intermediate position wherein the axes of rotation of the roller and of counter roller are aligned such that the contact region between the roller and the counter roller is smaller than in the load position of the roller.

Provided is a rubber for a textile roller and a preparation method therefor. The main material of the rubber for a textile roller is a nitrile butadiene rubber, added with conductive powder and conductive bands to form a net-node structure in the nitrile butadiene rubber by means of a mixing process, so that the rubber for a textile roller has a high electric conductivity, can timely export static electricity, and has good mechanical performance suitable for a textile roller, applicable in components of a spinning frame, a roving frame, a drawing frame and other textile machines.

Provided is a rubber for a textile roller and a preparation method therefor. The main material of the rubber for a textile roller is a nitrile butadiene rubber, added with conductive powder and conductive bands to form a net-node structure in the nitrile butadiene rubber by means of a mixing process, so that the rubber for a textile roller has a high electric conductivity, can timely export static electricity, and has good mechanical performance suitable for a textile roller, applicable in components of a spinning frame, a roving frame, a drawing frame and other textile machines.

A support element for a compacting device for two drawing system units of a spinning machine disposed next to each other, includes a suction channel that extends inside the support element and is connected to a suction zone of suction drums via openings of suction inserts. The end faces of the suction drums are open at one end and are disposed coaxially opposite each other at a distance. The suction drums are rotatably mounted on a shaft that is attached to the support element. The support element is formed from two half shells that form the suction channel and are connected to each other by way of attachment means, wherein each of the half shells has an outwardly projecting tubular suction insert. The suction inserts are disposed coaxially opposite each other, and each suction insert has at least one bearing element that is provided with a passage and has at least one brace, by way of which the shaft is held in the radial direction.

A support element for a compacting device for two drawing system units of a spinning machine disposed next to each other, includes a suction channel that extends inside the support element and is connected to a suction zone of suction drums via openings of suction inserts. The end faces of the suction drums are open at one end and are disposed coaxially opposite each other at a distance. The suction drums are rotatably mounted on a shaft that is attached to the support element. The support element is formed from two half shells that form the suction channel and are connected to each other by way of attachment means, wherein each of the half shells has an outwardly projecting tubular suction insert. The suction inserts are disposed coaxially opposite each other, and each suction insert has at least one bearing element that is provided with a passage and has at least one brace, by way of which the shaft is held in the radial direction.