Abstract: An open-end spinning device has a spinning rotor defining a fiber collection groove between a rotor bottom and an open-end of the spinning rotor. The rotor further includes a wall extending from the fiber collection groove to the open end of generally less than 6.0 mm. A rotor cover has an extension reaching into the interior of the spinning rotor. The extension includes at least a portion of a fiber feeding channel for feeding a fiber and air mixture into the rotor. A feed surface is disposed essentially parallel to a plane through a fiber collection groove into the extension adjacent the fiber feeding channel so that fibers exiting the feeding channel are directed along the feed surface. The feed surface has a radial dimension so that an open radial distance of less than 4.0 mm exists between the feed surface and the wall or fiber collection groove which is directly radially opposite of the feed surface.

Abstract: The present invention relates to a process and device for the connection of a negative pressure channel provided with openings installed on a textile machine with a plurality of work stations. A service unit traveling alongside the textile machine is provided with a negative pressure line. The negative pressure channel has openings which are closed off by swiveling flaps. When the service unit is brought to a stop at one of the work stations, the flap associated with the work station is swivelled by means of an apparatus installed in the service unit and the negative pressure line is connected to the opening of the negative pressure channel. Before the service unit leaves the work station, the connection between the negative pressure channel and the negative pressure line is broken and the flap is necessarily swivelled by the apparatus so as to be in front of the opening in order to close the opening.

Abstract: A spinning plant preparation machine with a rotary plate for the depositing of fiber slivers in spinning cans, The basic body of the rotary plate is a casting, A cover is attached to the underside of the rotary plate, The cover is a cover plate which is presented in different, prefabricated states and is to be attached to the rotary plate.

Abstract: An open-end spinning device with a spinning rotor is supported by a shaft in a bearing arrangement. An axially rearwardly directed force is exerted on the rotor shaft in operation of the spinning device. The end of the rotor shaft bears against an aerostatic bearing which includes a bearing surface oppositely facing the end of the rotor shaft made of a carbon material. The rotor shaft has a bearing surface defined on the end thereof opposite the aerostatic bearing which is made at least in part of a carbide material.

Abstract: The present invention relates to a suction apparatus to be connected to a machine of the textile processing or prepration industry connected to a suction system (1a, 1b, 14) with a work area (a) and a first suction apparatus (3) which is stationary in the surrounding of the work area for the aspiration of fibers, small parts and/or particles (dirt) from the work area. With it a machine cleaning system is created which is able to clean problem zones of the work area of a machine without imosing a load on the space surrounding the machine. This is achieved if a second suction line (4, 16) in form of a hose that is flexible at least in sections the end (6) of which opening towards the work area (A) of the machine is freely movable for cleaning while its end attached to the machine is connected to the suction system (1a, 1b, 14) in order to introduce the aspired dirt into the suction system.

Abstract: A system for lubricating the lower roller bearings of a textile machine drafting equipment includes a base body with punched-out shapes movably mounted on the base body by way of adjusting devices. Bores are defined in the punched-out shapes for receipt of the lower roller bearings. An encapsulated lubrication system supplies lubricant to the bearings and includes a channel defined through the punched-out shape with an outlet into the bore and an inlet in communication with the channel defined through the base body which is in further communication with a source of lubricant at one end thereof. An excess lubricant removal channel is defined in the punched-out shape and has an opening in communication with the bore and an outlet on a side of the punched-out shape away from the operating area or space of the lower roller.

Abstract: A winding process for winding yarn into a cross-wound bobbin in the textile machine includes depositing the yarn on a bobbin in a transversing stroke by a transversing movement of a yarn guide. The process includes intermittently decreasing the traversing stroke from a maximum value to a minimum value and then increasing the value of the traversing stroke from the minimum value back to a relatively constant maximum value and holding the stroke at the maximum value for a predetermined period of time. The traversing frequency of the yarn guide is decreased to a relatively constant minimum value substantially simultaneously with the increasing of the traversing stroke from the minimum value back to the relatively constant maximum value. The traversing frequency is maintained at the constant minimum value for a predetermined period of time. The traversing frequency of the yarn guide is then increased from the constant minimum value after the predetermined period of time.

Abstract: The invention relates to a process to ensure precise autolevelling for the drafting of a fiber structure in a pre-spinning machine, whereby an open control circuit controls the drafting of the fiber sliver through the drafting rollers, whereby the fiber structure is clampingly held between drafting roller pairs and sensing roller pair during stoppage, whereby a pulse generator is able to produce impulses for the rotation of a pair of sensing rollers which are transmitted to an electronic memory during stoppage of the drafting equipment, and whereby the association of data and momentary position of the sliver events is maintained in the electronic memory during stoppage of the drafting equipment.During stoppage each impulse of the pulse generator is detected and evaluated by means of an electronic system (13, 15, 23) on the connection between pulse generator (4, 14, 19, 22) and electronic memory (3, 18, 26).

Abstract: A process and control system are provided for controlling a combination of spinning mill machines. The system includes the process of exchanging operational data and measured values between the machines on a plurality of different communication levels which are arranged in a hierarchy. The same communication protocol is used on all of the communication levels to improve the speed and ease of control of the combination of spinning mill machines.

Abstract: A compression bar for use in the main drafting zone of drafting rollers of the textile industry. The invention considerably reduces deposits on a compression bar. The fixed compression bar has a rectangular cross-section, with its narrow faces being rounded off. On the other hand, the compression bar is rotatably mounted about its longitudinal axis, whereby the compression bar has preferably a circular cross-section.

Abstract: A fiber sliver guidance system is provided for textile machine drafting equipment wherein a fiber sliver is drafted by pairs of drafting rollers and conveyed by a pair of delivery rollers to a calendar device. The guidance system is disposed between the delivery rollers and the calendar device and includes a plurality of nozzle inserts which define a fiber sliver channel between the delivery rollers and the calendar device. The fiber sliver channel has an axis defined by two axial segments which can be angled relative to each other. At least one of the nozzle inserts can be articulated relative to the other nozzle inserts about a swivel axis. The articulatable nozzle swivels automatically from an operating position to a closed position upon a back-up of fiber fleece in the fiber sliver channel.

Abstract: A fiber sliver guidance system for a textile machine drafting equipment is provided and includes a first nozzle section disposed relative to the delivery rollers to receive a fiber fleece therefrom and form the fiber fleece into a fiber sliver. A second nozzle section is connected to the first nozzle section to receive the fiber sliver therefrom. The second nozzle section includes an essentially cylindrical sliver channel disposed to guide the sliver to the nip of the calender rollers. The sliver channel of the second nozzle section includes a guiding section defined by spaced apart end segments which extend on opposite sides of an alongside the calender rollers past the nip. The side signals cooperate with the calender rollers to define a limited air loss channel for the fiber sliver directly to the nip.

Abstract: A process and device are provided to introduce a fiber fleece through the nip of a pair of calendar rollers. Pressurized air is directed to a cylindrical segment of a sliver guiding system down stream from a tapered conical section so that the pressurized air draws the fiber fleece through the sliver guiding system without requiring lateral venting or expansion of the pressurized air. The pressurized air vents from the front end of the cylindrical section adjacent the nip of the pair of calendar rollers.

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: A spinning rotor for an open-end spinning device is proposed which is provided with a smooth surface at the critical locations in order to avoid deposits within the spinning rotor at its inner surface. The ring-shaped zone of the inner surface of the spinning rotor near its edge as well as the area of its bottom may for instance be made especially smooth by polishing.

Abstract: In preparation of the piecing process in an open-end rotor spinning device, negative pressure is first applied in a housing containing the spinning rotor, and the rotor cover is brought from its operating position into a fiber evacuation position in which it is lifted off from the housing. Fiber feeding is then switched on. The fiber stream produced thereby, together with the air stream which conveys the fibers is deflected and is evacuated by means of the negative pressure prevailing in the housing over the open rotor edge from the interior of the rotor and from the housing, until the rotor cover is brought back into its operating position to convey fibers to the fiber collection groove.

Abstract: Disclosed is a process and a device for automatic introduction of a fiber sliver into a textile machine equipped with a feed mechanism. The end of the fiber sliver is brought into a defined receiving position in which it is introduced into the feed mechanism. A predetermined length of the end of the fiber sliver is seized. The sliver is then shortened to a second predetermined length and is then introduced into the feed mechanism.

Abstract: In an open-end rotor spinning device the area of the rotor cover (3) across from the rotor edge (23) is made in the form of a rotor impact surface (4). Impact surface (4) has an axial (41) as well as a radial impact surface (42). The rotor impact surface (4) may be part of an insert (40) which is made in the form of a wearing part throughout its entire cross-section.