A yarn deflection unit for a textile machine, having a housing comprising a curved wall section for forming a radially outer wall section of a curved yarn deflection channel. The solution proposed by the invention is distinguished in that the curved wall section has a yarn guiding groove extending along the curvature for receiving and guiding a yarn.

The invention relates to a device for positioning at least one roller in a drawing device and/or in a spinning unit, and/or for tensioning at least one belt, in particular a running belt, in a drawing device and/or in a spinning unit, wherein the device comprises: the at least one roller which is rotatably mounted, the at least one belt, in particular a running belt, at least one tension rod, and at least one guide device for contacting the belt at at least one contact point for guiding the belt during operation of the at least one roller.

In order to improve and simplify the process of changing the belt, the at least one guide device is arranged and designed in such a way as to make the lower roller reversibly accessible for removing the belt and/or threading the belt, in particular without changing the relative positions of the roller, tension rod and/or belt to one another.

The invention relates to a device for positioning at least one roller in a drawing device and/or in a spinning unit, and/or for tensioning at least one belt, in particular a running belt, in a drawing device and/or in a spinning unit, wherein the device comprises: the at least one roller which is rotatably mounted, the at least one belt, in particular a running belt, at least one tension rod, and at least one guide device for contacting the belt at at least one contact point for guiding the belt during operation of the at least one roller.

In order to improve and simplify the process of changing the belt, the at least one guide device is arranged and designed in such a way as to make the lower roller reversibly accessible for removing the belt and/or threading the belt, in particular without changing the relative positions of the roller, tension rod and/or belt to one another.

Systems, apparatus, and methods for stretching wireline cables are provided. Tension is applied to a wireline within an engagement zone, either while the wireline is static or moving. The tension may be stabilized using a capstan. The wireline may be heated, coated, cleaned, stabilized, bent, or combinations thereof.

Systems, apparatus, and methods for stretching wireline cables are provided. Tension is applied to a wireline within an engagement zone, either while the wireline is static or moving. The tension may be stabilized using a capstan. The wireline may be heated, coated, cleaned, stabilized, bent, or combinations thereof.

The invention relates to a method for operating a textile machine which serves to produce roving (1), wherein during roving production a roving (1) having a protective twist is produced by means of at least one consolidating means from a fiber bundle (3) that is fed to the consolidating means, wherein the roving (1) produced by the consolidating means is wound by a winding device (5) onto a tube (7), wherein the roving (1) during the winding process is guided by means of a guide element (23) which is arranged between the consolidating means and the tube (7), and wherein the guide element (23) exerts a decelerating effect on the roving (1). According to the invention, it is proposed that the decelerating effect is adapted during operation of the textile machine in such a way that it is lower during a start procedure, while the roving (1) leaving the consolidating means is being brought into contact with a tube (7), preferably an empty tube (7), and/or during a tube change, while a wound tube (7) is being replaced by an empty tube (7), than during a winding process that takes place between the start procedure and the tube change. A textile machine for producing a roving (1) is also described, said textile machine having at least one controller which is designed to operate the textile machine in accordance with the method according to the invention.

The invention discloses a rigid-flexible coupling mechanism with variable rod length for fibre bundle tension control. In the transmitting process, the fibre bundle passes through the front guide roller, the tension regulating roller and the back guide roller sequentially. The front and back guide rollers have fixed positions, while the tension regulating roller has an adjustable position to regulate the fibre bundle tension. The invention uses the variable rod length rigid-flexible coupling mechanism with a combination of a servo motor and an electric actuator in a dual drive control mode, which can choose to use either a four-rod fixed length mechanism or a five-rod variable length mechanism to regulate the tension under different working conditions. This provides a more flexible control method, increases the regulating range of fibre bundle tension, improves the system response speed and regulation accuracy, and effectively avoids the wear of fibre bundle caused by tension fluctuations.

The invention discloses a rigid-flexible coupling mechanism with variable rod length for fibre bundle tension control. In the transmitting process, the fibre bundle passes through the front guide roller, the tension regulating roller and the back guide roller sequentially. The front and back guide rollers have fixed positions, while the tension regulating roller has an adjustable position to regulate the fibre bundle tension. The invention uses the variable rod length rigid-flexible coupling mechanism with a combination of a servo motor and an electric actuator in a dual drive control mode, which can choose to use either a four-rod fixed length mechanism or a five-rod variable length mechanism to regulate the tension under different working conditions. This provides a more flexible control method, increases the regulating range of fibre bundle tension, improves the system response speed and regulation accuracy, and effectively avoids the wear of fibre bundle caused by tension fluctuations.