Abstract: A measuring roller for a device for measuring a fiber composite (2), in particular on a draw frame, a carding engine or a comber, is made of a material of low thermal expansion (3) and has a surface coating (4). The measuring roller (1) features a shell surface (5) for clamping a fiber composite (6) along with a rotary axis (7). The shell surface (5) features a structure forming an air buffer, made of grooves (8), boreholes (9), and/or spherical projections (18).

Abstract: The invention relates to a measuring roller for a device for measuring a fiber composite (2), in particular on a draw frame, a carding engine or a comber, made of a material of low thermal expansion (3) and having a surface coating (4), whereas the measuring roller (1) features a shell surface (5) for damping a fiber composite (6) along with a rotary axis (7). In accordance with the invention, the shell surface (5) of the measuring roller (1) features a structure forming an air buffer, made of grooves (8), boreholes (9) and/or spherical projections (18).

Abstract: A process for the level adjustment of the can plate of a sliver can is proposed which is in a filling position at the output of a textile machine to be filled with fiber sliver F. The can plate is moved before the start of the filling process by a first moving device from a lower can plate position into a higher can plate position and is moved into the lower can plate position during the filling of the sliver can. The process according to the invention is characterized in that the can plate is moved before the start or during the starting phase of the filling process by a second moving device from the higher can plate position into an upper filling position after the sliver can enters a position to accept sliver from the textile machine. Furthermore, a suitable apparatus to perform the process is presented.

Abstract: A process for the level adjustment of the can plate (14) of a spinning can (10, 100) is proposed which is in a filling position at the output of a textile machine to be filled with fiber sliver F, whereby the can plate (14) is moved before the start of the filling process by a first moving device 17 from a lower can plate position into a higher can plate position and is moved into the lower can plate position during the filling of the spinning can (10, 100). The process according to the invention is characterized in that the can plate (14) is moved before the start or during the starting phase of the filling process by a second moving device (9; 109) from the higher can plate position into an upper filling position as the spinning can (10, 100) is in filling position. Furthermore a suitable apparatus is presented.

Abstract: Upon filling cans with fiber band, the movable bottom of the cans, as the filling process proceeds, moves downwardly from an initial upper to a lower final position. As this happens, between two elements, one inside, one outside the circumferential shell of the can, a force field is built up in such a way that the element inside the can supports the can bottom and because of the force field, this bottom is held at the same elevation as the element outside of the can. Further, the desired operating height of the can bottom can be correspondingly held. For the lowering of the can bottom, one of the two elements between which the force field exists, is moved relative to the other in the direction of the lower final positioning of the can bottom and the remaining element follows after, because of said force field, until both elements again stand across from one another at the same height.

Abstract: The present invention concerns a textile machine, particularly a stretch machine with a can agitation apparatus (7) and/or a can exchange apparatus (4) which is situated in a first chamber (3), which chamber (3) communicates with the space surrounding the textile machine (1). The drive mechanism (72 or 43) of the can agitation apparatus (7) and/or the can exchange apparatus is located in an additional chamber (8 or 5) which is separated from the first chamber (3) by an aerodynamic separative element (6 or 60). Through the separation elements (6 or 60), connection elements (71 or 42) extend from the drive mechanism (72 or 43) to the can agitation apparatus (7) and/or the can exchange apparatus (4). A cleaning element (9) is made available to the first chamber (3) which cleaning element (9) (not shown) is able to be brought into action at specified times.

Abstract: The invention relates to the filling of a flat can with fiber sliver by a textile machine which delivers a fiber sliver, such as a carding machine or a draw frame, whereby the flat can is moved under a stationary, rotating rotary plate. The invention significantly reduces the costs for the required movements of the flat can as compared to the state of the art. The process according to the invention for the traversing of a flat can during the filling process at a textile machine delivering a fiber sliver is realized in that the flat can is shifted laterally by tilting of the flat can around an axis in the return path of the traversing path. In the device according to the invention, the traversing mechanism is equipped with a tilting device. For this purpose, the tilting device is provided with a tilter and an axis around which the flat can is tilted.

Abstract: The instant invention relates to the deposit of the fiber sliver end after the filling of a flat can. It is the object of the invention to deposit and prepare the sliver end in the area of the filling station on a full flat can in order to facilitate automatic handling of the flat can during transportation as well as automatic handling of the sliver end on a spinning machine at the least possible cost. The invention assumes that the positions between outlet (15) of the rotary plate (12), severing device (18) and flat can (1) in relation to each other are adjustable and that an influence on the point of deposit of the sliver end and on the length of the sliver end results from this selected setting.

Abstract: A process, and machine for carrying out the process, for severing a fiber sliver at a textile machine includes conveying the fiber sliver by a pair calendar rollers through a sliver guiding channel of a rotary plate into a sliver can disposed below the rotary plate. The calendar rollers are stopped, and thus also the conveyance of the sliver. A severing point is defined in the sliver downstream of the calendar rollers by drafting the fiber sliver with a moveable clamping device at a desired location of the severing point. Once the fiber has been drafted at the severing point, the sliver is severed by displacement of the can from below the rotary plate.

Abstract: The process for the positioning of a fiber sliver end is characterized in that in the stopped position of the flat can a drafting point is formed in the fiber sliver between the pair of calendar rollers and the sliver guiding channel and in that subsequent displacement of the flat can into a transfer position causes the fiber sliver to be severed at the drafting point and to be pulled out of the rotary plate, so that it is positioned with a constant length on the flat can.

Abstract: The instant invention relates to the deposit of the fiber sliver end after the filling of a flat can. It is the object of the invention to deposit and prepare the sliver end in the area of the filling station on a full flat can in order to facilitate automatic handling of the flat can during transportation as well as automatic handling of the sliver end on a spinning machine at the least possible cost. The invention assumes that the positions between outlet (15) of the rotary plate (12), severing device (18) and flat can (1) in relation to each other are adjustable and that an influence on the point of deposit of the sliver end and on the length of the sliver end results from this selected setting.

Abstract: The invention is a process and a device for the jigging of a flat can in a textile draw frame. According to the invention, the flat can is subjected to different dynamic moments in the translational movement along the jigging path. It is a characteristic of the invention that the speed is regularly modified in proximity of the reversal points (P1, P2), i.e. in the area of the reversal paths (UW1, UW2). The jigging device is provided with a driving device which renders the constant translational movement changeable in proximity of the reversal point (P1, P2). The driving device may be a servomotor controlled by a computer which serves as the control device. In another embodiment the diving device is a different, less expensive electric motor on the drive shaft of which belt pulleys capable of being coupled are installed.

Abstract: A spinning or twisting device in which a yarn is to be back-fed into the bore of a pipe-shaped element subjected to negative pressure in order to repair a yarn break. This pipe-shaped element is made in form of a yarn draw-off pipe of an open-end spinning device or as part of a pneumatic twisting device.A presenting device is moved over and beyond the pipe-shaped element into a yarn inserting position. The end of the pipe-shaped element towards the moving path of the presenting device is provided with a nozzle which is provided, in relation to the bore, on its side towards the yarn inserting position of the presenting device with a yarn support, and on its side away from the yarn inserting position with a yarn insertion groove, oriented in the direction of movement of the presenting device. The bottom of the yarn insertion groove is at a greater distance from the moving path of the presenting device than the yarn support.