Abstract: For producing a yarn (4) spun from a loose fibre array (2) using a vortex flow an apparatus is used in which between a fibre supply duct (1) and a yarn take-off tube (5) a vortex chamber (3) is provided. Into the vortex chamber (3) a fluid is injected via tangentially oriented nozzles (6), which subsequently is drained via an exhaust duct (7). This apparatus comprises a wall limiting the vortex chamber downstream zone formed e.g. by a wall plate (20). This plate separates the vortex chamber (3) from the exhaust duct (7), but for completely draining the fluid is provided with a plurality of openings (21) extending to the exhaust duct (7). Owing to the functional separation of the vortex chamber (3) from the exhaust duct (7), in which the inventive apparatus differs from the state of the art, the fibre losses are reduced.

Abstract: A card is equipped with a regulating drafting system at the card delivery arrangement. The measuring values for regulating the drafting system are obtained from the drafted fibre sliver. The sliver depositing device can be pre-controlled relative to the drafting system in order to keep the stresses in the fibre sliver between the drafting system and the sliver depositing device within limits. A fibre sliver storage device (11) is arranged upstream from the regulating drafting system (13) with relatively small capacity. In order to enable timely action if long term deviations are detected in the fibre sliver mass (m) delivered, a sensor (10) can be arranged between the card (1) and the regulating drafting system (13), and the base rotational speed (U14) of the drive (25, 26) of the regulating drafting system (13) can be adapted based on signals transmitted by the sensor (10).

Abstract: The present invention concerns a pneumatic spinning apparatus (1) for producing a yarn or thread spun from fibres. In a nozzle block (2) a hollow room (3) with a spindle (5) is arranged. At least one jet nozzle (4) serves for generating a rotating air stream in the hollow room (3). Opposite the spindle (5) a fibre guide means (6) is arranged, which in the yarn forming process serves as a false core. A fibre guide duct (11) merges from the exterior into the hollow room (3) at the foot end of the fibre guide means (6). The fibre guide duct (11) presents a variable cross-section along its length.

Abstract: EP-A-627505 describes a connecting system between a revolving flat bar of a revolving flat card and a flexible drive belt. The system is based on snap-in connections. According to EP-A-753610, every snap-in connection comprises two rails (230) which each touch an inclined surface (214, 216) on the belt. According to the present invention such a snap-in connection can be supplemented by a locking element (300) which prevents an inadvertent loosening of the snap-in connection.

Abstract: The method and an apparatus provide for the automatic provision and transfer of a reserve lap (WR) from a reserve position (RP) to a working position (AP) in a machine (K1 to K3) for processing wound laps and for the automatic discharge of an empty tube (H) from the working position (AP). The conveying system (K, 4) is provided to convey wound laps (W) or empty tubes (H) individually or in groups between a lap-processing (K1 to K3) and a lap-forming machine (KV). The control unit (8) of the conveying system (K, 4) is connected with a central control unit (ST) which is connected with the control unit (21, 22, 23) of the respective lap-processing machine (K1 to K3), with a conveyor (T) in the lap-forming machine (Ky), as well as with the control unit (20) of the lap-forming machine (Ky), and a transfer device (58, 60, 61, 63) which can be controlled via the control unit (21,22,23) of the respective lap-processing machine (K1 to K3).

Abstract: A nozzle for the treatment of threads is divided in the conveying direction into a conveying part, a compression section and a guiding part. The compression section, for the purpose of forming a yarn plug, includes fixedly arranged radially and axially directed lamellar. The ends of the lamellar which face the guiding part are neither in contact with each other nor with any surrounding parts of the nozzle so that fibers which are located in the gaps between the lamellar, and which radially exit the channel being formed by the lamellar can reach an inlet funnel of the guiding part or a plug guide tube respectively, without colliding with any edges.

Abstract: A device for grinding clothing teeth and wire, or for cleaning cylinders, in a textile machine includes a grinding part having an elastic layer and grinding elements embedded throughout the elastic layer. The elastic layer is formed into a shape for being pressed against the clothing teeth, wire, or cylinder of the textile machine, and is formed of a material such that the elastic layer is worn by the clothing teeth, wire, or cylinder. In this way, the underlying embedded grinding elements are exposed.

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: The invention relates to a method for controlling the draft of a fiber mixture (e.g. a sliver) of a textile machine, with sensors being provided which detect the fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit including at least one changeable drafting zone which compensates the fluctuations in mass. A delay time is provided in order to take into account the running time of the fiber mixture from the measuring sensor up to a control application point. A method is therefore proposed whereby, for the purpose of changing certain control parameters, the delivery speed of the fiber mixture and/or the comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass (setpoint) are used.

Abstract: A method for operating a bale opening machine (1) includes the step of defining a desired normal or operational take-off depth for the take-off device or extraction member (6) to be applied to all of the bales (7) of the bale lie. An actual take-off depth is computed for predetermined positions along the bale line as a function of the normal take-off depth and factors computed for the respective positions to take into account bale height differences and density differences between the bales. With respect to the bale height differences (4MAX−aMIN), the take-off factors have a proportional value based on a bale height at the respective positions compared to a total bale height difference between the highest and lowest bales. A total bale height is recomputed prior to each pass of the take-off device and the actual take-off depth factors are set to a value of 1 if the computed total bale height difference is reduced to at least the magnitude of the normal take-off depth.

Abstract: A method for controlling a ring spinning frame that has a drafting unit, a spindle, and a ring rail is provided. The method involves providing a clamping device for yarn in a position below a cop on the spindle. The method further involves the driving of the drafting unit, the spindle, and the ring rail in coordinated operation. Also included is changing the twisting of the yarn in order to obtain a matched strength during formation of the reverse winding at the end of the winding cop before reaching the cop bottom port within the last phase of the downward movement of the ring rail. Additionally, the yarn is brought into a section of the clamping device, and the spinning frame is slowed to a standstill. A spinning frame is also provided.

Abstract: In a fiber-processing machine with a separating edge, in which both fibers as well as air are guided past the edge in a substantially predetermined conveying direction, air layers loaded with dirt particles or waste are deflected by means of the edge from the stream of fibers/air. The removal of dirt is aided at first by means of blast air.

Abstract: The invention relates to a spinning device for the manufacture of a spun thread from a fiber bundle, surrounding a nozzle block (20) with one or more nozzles (21), which take effect on a fiber bundle which is conveyed at a suction drum (4) through the channels (14 and 15) against a spindle (32), and in this situation the rear fiber ends are taken up and rotated in the direction of rotation of the air flow in such a way that they rotate the front ends of the fibres which are already located in the yarn guide channel (45) to form a yarn (46).

Abstract: A device for adjusting the work gap between the points of the flat clothings and the points of the cylinder clothing of a card, whereby the flat bars being furnished with clothings are led over a partial area of the drum circumference on both sides of the card on sliding surfaces which are being provided with respective convex bent sliding guides, whereby the flat bars are being provided with flat heads, furnished with sliding surfaces, which slide alongside the sliding guides, the sliding guides each are being formed by a bent part and the radial position of the sliding surfaces of the sliding guides in relation to the axis of rotation of the drum is changeable by changing the local position of the parts is characterized in that those parts, each forming the sliding guides, are supported at several discrete supporting points and are shiftably arranged in relation to the supporting points, around the axis of rotation of the drum, whereby the sliding surfaces of the sliding guides, for adjusting the work gap,

Abstract: The invention relates to a spinning device for the production of a spun thread from a fiber bundle, comprising a nozzle part 6 with an upper nozzle part 7 and a lower nozzle part 8.

Abstract: In a spinning position of a spinning machine a longitudinal fibre array first is refined in a drafting process, and the refined fibre array (10) then is subject to a twist imparting process, and is taken off the twist-imparting zone as a yarn (11). In case of an interruption of the spinning process the intake into the refinement zone is stopped before the delivery from the refining zone is stopped in such a manner that the longitudinal fibre array is severed between the intake and the delivery zones forming a free front end zone. The free end (11) of the yarn, generated by the interruption of the spinning process is treated in such a manner that a yarn end zone (1) is formed tapering off, and is positioned upstream from the twist imparting zone. Ad the spinning process is resumed the movements of the yarn end zone (1) and of the fibre array front end zone (2) for imparting twist are coordinated in time sequence in such a manner that these two zones overlap as they are subject to the twist imparting process.

Abstract: In a spinning machine with a drafting arrangement (1), a condensing device (3) and a spinning device (5) for a fiber structure (71) each, with several such devices being disposed adjacent to one another in a spinning machine, and with a condensing element (31) with the condensing device (3), with a stationary suction element (37) being assigned to the condensing element (31) for discharging the air entering the suction element (37) through the condensing element (31), the suction element consists of a housing (37.1) and an insert (37.2), with the latter being displaceable with respect to the housing (37.1) along a guide means (44a, 44c, 44b) and being arrestable with respect to the housing (37.1).

Abstract: The method and an apparatus provide for the automatic provision and transfer of a reserve lap (WR) from a reserve position (RP) to a working position (AP) in a machine (K1 to K3) for processing wound laps and for the automatic discharge of an empty tube (H) from the working position (AP). The conveying system (K, 4) is provided to convey wound laps (W) or empty tubes (H) individually or in groups between a lap-processing (K1 to K3) and a lap-forming machine (KV). The control unit (8) of the conveying system (K, 4) is connected with a central control unit (ST) which is connected with the control unit (21, 22, 23) of the respective lap-processing machine (K1 to K3), with a conveyor (T) in the lap-forming machine (Ky), as well as with the control unit (20) of the lap-forming machine (Ky), and a transfer device (58, 60, 61, 63) which can be controlled via the control unit (21,22,23) of the respective lap-processing machine (K1 to K3).

Abstract: In a spinning machine with a plurality of spinning places each spinning place is provided with a yarn formation means (6) and a refining means (1) which is disposed upstream of the yarn formation means. Every spinning place is supplied with a longitudinal object made of staple fibers which is refined by the refining means (1) and is spun into a yarn by the yarn formation means (6). Every spinning place is provided with sensor means (10, 11) for detecting the fiber mass in the supplied fiber material and/or in the produced yarn. Moreover, at least a part of the refining means (1) can be driven or controlled in each spinning place independent from the other spinning places. A control and monitoring unit (12) produces control data on the basis of the measured data which concern the fiber mass and are produced in a spinning place, which control data are for the independently controllable parts of the refining means (1), and controls the same accordingly.

Abstract: The production of a core spun yarn (46) by means of fluid technique is performed with an apparatus according to the invention. The apparatus substantially comprises a fiber guide conduit (13) with a fiber guide surface (28) for guiding the fibers (F) of the fiber structure and a guide apparatus for guiding the continuous thread (C) into an inlet orifice (35) of a yarn guide conduit (7, 45) and a fluid device for producing a swirl flow about the inlet orifice (35) of the yarn guide conduit (7, 45). It further comprises with respect to the fiber guide surface (28) a guide means (5) contained in the thread guide means (4) for at least one continuous thread (C), so that said at least one continuous thread (C) can be spun over by the fibers (F) on the spindle (6, 32). The guide means (5) is either a groove (5.1) which is associated with the fiber guide surface (28), a bore (5.2) disposed below the fiber guide surface (28) or an individual tube-like element (5c), or one that is combined with a groove (5.