Abstract: A weaving machine includes a shed forming device, a weft insertion device, and a weaving reed that beats up the weft threads at a beat up plane against an edge of the woven fabric. A guide device extends over a width of the woven fabric and is driven by a drive, the guide device being one or both of an upper guide unit that contacts a top surface of the woven fabric or a lower guide unit that contacts a bottom surface of the woven fabric. A control unit controls alternating movement of the guide unit along the direction of thickness of the woven fabric as the fabric is being woven based on information related to one or both of a structure of the woven fabric in the area of the beat up plane or a position of the warp threads in the open loom shed.

Abstract: An apparatus for drawing-off a web-shaped product from a weaving machine in a drawing-off direction includes: at least one clamp carrier having clamps for the web-shaped product; a carrier frame apparatus on which the clamp carrier is guided; a drive arrangement by which the clamp carrier is drivable back and forth in a motion range; and a support system for the web-shaped product. The support system is arranged in an area between the apparatus side facing toward the weaving machine and the clamp carrier, within the carrier frame apparatus, in such a manner so that a sagging of the web-shaped product in this area is avoided or limited by the support system.

Abstract: A method and an apparatus for producing and drawing-off a woven fabric web (2) with a weaving machine (1) make use of two clamp carriers (7.1, 7.2) with clamps (10.1, 10.2). The clamp carriers are driven back and forth parallel to a drawing-off direction of the fabric web. The clamp carriers are respectively drivable with a pair of drive spindles (14.1, 14.2) arranged so that the web center of the fabric web within the apparatus extends in an area between the two drive spindles of the respective clamp carrier. The fabric web is produced with successive main sections (4.1, 4.2, 4.3, 4.4) and auxiliary sections (3.1, 3.2, 3.3, 3.4, 3.5). The clamps are actuated so that the opening and closing of the clamps takes place only in the time segments of the production in which an auxiliary section of the fabric web is being produced.

Abstract: Apparatus and method for holding and feeding weft threads to the gripper of a weaving machine with drives, with which clamps for the weft threads are moved on motion paths into respectively a feed position, a transfer position and a ready position. The motion path of each clamp comprises a shape that is closed in itself. In that regard, the motion beginning of at least one of the clamps out of its ready position into its feed position takes place in a time segment that extends from the beginning of the beat-up motion of the weaving reed until the beat-up of the previously inserted weft thread against the beat-up line of the weaving machine.

Abstract: An apparatus has first and second coating nozzles for applying a liquid coating material respectively to two sides of a running flat material web, and has first and second rigid supply line sections for supplying the coating material to the respective coating nozzles. At least one of the coating nozzles is transferable from a working position to a maintenance position and back. In the working position, throughflow channels in the supply line sections communicate with one another to provide a throughflow of the coating material to the coating nozzles. When transferring at least one of the coating nozzles from the working position to the maintenance position, the rigid supply line sections are automatically moved relative to one another so that the throughflow channels therein are interrupted so as to interrupt the flow of the coating material to this coating nozzle.

Abstract: A film stretching plant is described, which comprises a furnace (3), which consists of several treatment zones (1, 1a) which each respectively comprise a ventilation unit (2). The film (4) is suppliable to the furnace (3) through a film inlet region (5) and is thermally treatable zone-wise in the treatment zones (1, 1a). The treatment fluid (6) supplied to the film stretching plant flows over the film (4) on its upper surface and its lower surface in the treatment zones (1, 1a). In the film stretching plant according to the invention, the treatment fluid (6) is circulatable in the respective treatment zone (1, a) by its associated respective ventilation unit (2) for the thermal treatment of the film (4), and a portion (6a) of the treatment fluid (6) is conveyed from the respective treatment zone (1) to the process-technically following treatment zone (1a).

Abstract: Method for measuring the fabric tension in a weaving machine, in which the fabric (1) is deflected by a deflecting shaft (2), wherein a bending force is applied onto the deflecting shaft (2) by the fabric (1). The flexure or bending displacement of the deflecting shaft (2) is measured by a sensor (3), which is arranged in an area between two supports (4.1, 4.2) of the deflecting shaft (2) on the weaving machine. The deflecting shaft (2) is connected with a machine frame (9) of the weaving machine via the two supports (4.1, 4.2). The spacing distance (A) between the two supports (4.1, 4.2) of the deflecting shaft (2) is reduced for larger fabric tensions to be measured and is increased for smaller fabric tensions to be measured. Furthermore, the invention relates to a corresponding weaving machine.

Abstract: An apparatus for supplying compressed air to air-consuming components of an air-jet weaving machine includes plural pneumatically controllable pressure regulators (1.1, 1.2, 1.3), that each respectively have a pneumatic control inlet (3.1, 3.2, 3.3), plural electrically switchable valves (6.1, 6.2, 6.3) that are respectively connected to the pneumatic control inlets, an electrically controllable pressure regulator (4), and a control pressure line (5) that connects the outlet of the electrically controllable pressure regulator to the valves, and through the valves to the pneumatic control inlets of the pneumatically controllable pressure regulators.

Abstract: Apparatus for the intermediate storage of two band-like weft materials (1, 21) for a weaving machine (3), with two storage containers (7, 27) in which respectively a U-shaped loop (12, 22) of a weft material (1, 21) can be formed. Machine elements (14, 34) for the application of tensile forces (15, 35) onto the weft material (1, 21) in the inner space (9, 29) of the respective storage container (7, 27) are present. The inner spaces (9, 29) of the two storage containers (7, 27) respectively orient one of their two narrow sides (10, 30) toward one another. Deflection elements (16, 36) are respectively arranged on the storage container (7, 27) in such a manner so that the respective weft material (1, 21) can be supplied to the inner space (9, 29) in a region (17, 37) that lies closer to that one of the two narrow sides (11, 31) of this inner space (9, 29), which is not oriented toward the inner space (9, 29) of the respective other storage container (7, 27).

Abstract: An apparatus (2) with a chain (1) that is arranged endlessly circulateable in the apparatus (2) includes a measuring apparatus (3) for measuring the stretching or elongation of the chain (1), with a first signal pick-up (4) and with a second signal pick-up (5), which are arranged at a spacing distance (D) relative to one another, which extends in the running direction over several chain links (6) of the chain (1). A first element for signal generation (7) is arranged on a first chain link (6.1) in such a manner so that with a circulating chain (1) a signal is produced upon running past the first signal pick-up (4). Several further elements for signal generation (8) are arranged on a second chain link (6.2) in such a manner so that with a circulating chain (1) a further signal is generated with each one of these further elements (8) upon running past the second signal pick-up (5).

Abstract: Shed formation on a weaving machine (2), which is driven by a main motor (3), with a shedding device (4), which is driven by a shedding motor (5), wherein in each motion cycle (N) of the weaving machine (2), a loom shed (7) formed by warp threads (8) of the weaving machine (2) is opened and closed dependent on a weave pattern, and wherein the synchronicity of the two motors (3, 5) is controlled by signals (10) of a control device (9). During a partial number (Tn1, Tn2) of motion cycles (N), the synchronicity of the two motors (3, 5) is changed in such a manner so that plural shed closure angles (FSW) at which the loom shed (7) in the respective motion cycles (N) is closed, form an increasing or decreasing sequence.

Abstract: Air-jet weaving machine with an apparatus for the supply of compressed air with several pneumatically adjustable pressure regulators (1.1, 1.2, 1.3), wherein the pneumatically adjustable pressure regulators (1.1, 1.2, 1.3) respectively comprise a pneumatic control inlet (3.1, 3.2, 3.3). Furthermore an electrically controllable pressure adjusting means (4) and a control pressure line (5) is present, in which various different air pressure values are producible by the electrically controllable pressure adjusting means (4). To each pneumatic control inlet (3.1, 3.2, 3.3), an electrically switchable valve (6.1, 6.2, 6.3) is allocated, by which the pneumatic control inlet (3.1, 3.2, 3.3) is connectable with the control pressure line (5).

Abstract: A weaving machine for producing a woven fabric has a shedding device to form a loom shed of warp material, a weft insertion device for inserting a preferably tape-shaped or band-shaped weft material into the loom shed, a drawing-off device for drawing off the finished fabric in a drawing-off direction, fabric movement device for moving the fabric back and forth in the warp direction to bring the last inserted weft material into contact with the binding point or fabric edge. A shed limiter device limits the opening of the loom shed from above and below the warp, and is movable back and forth in the warp direction. The shed limiter device only loosely bounds the fabric and essentially without actively clamping or pinching or contacting the fabric and/or the last inserted weft material, at least while moving in the direction opposite the drawing-off direction.

Abstract: A gripper head for the insertion of weft threads on a gripper weaving machine as well as a gripper weaving machine with such a gripper head. The gripper head thread clamp for the weft thread is controlled in a contact-free manner and with high transfer reliability of the weft thread even in the machine center.

Abstract: For producing woven fabrics with additional pattern effects, one or more effect threads are supplied substantially in the warp direction and are moved over neighboring warp threads in the weft direction, above a weft thread that is to be inserted, in various motion cycles of a weaving machine. Subsequently the effect threads are positioned below a subsequent weft thread, by submerging the effect threads into upwardly open reed gaps of a reed. To facilitate this, the reed includes first reed blades which, at their upper end, each include a sloping thread guide element projecting in the longitudinal direction of the reed, so as to at least partially extend over the upwardly facing opening of a neighboring reed gap. The reed further includes second reed blades having no such sloping thread guide elements. The guide elements guide the effect threads down into the proper reed gaps.

Abstract: For weaving pattern formation of a woven fabric with weft threads (3), warp threads (1) and effect threads (2), data sets (20) are produced according to a method in which data values are derived from weft sequence numbers (30) and from positions of interlacing points (P) of an effect thread (2) with the weft threads (3) in the pattern repeat (29). These data sets (20) are supplemented by further data values (31, 32, 33, 34) derived from the weaving pattern, in such a manner so that they form a pattern draft (28) for a weaving pattern with additional weft effects. In a weaving machine with devices for slidingly displacing effect threads (2) in the weft direction (12), the weaving pattern formation is derived from the data sets (20) of this pattern draft (28).

Abstract: An apparatus (2) with a chain (1) that is arranged endlessly circulateable in the apparatus (2) includes a measuring apparatus (3) for measuring the stretching or elongation of the chain (1), with a first signal pick-up (4) and with a second signal pick-up (5), which are arranged at a spacing distance (D) relative to one another, which extends in the running direction over several chain links (6) of the chain (1). A first element for signal generation (7) is arranged on a first chain link (6.1) in such a manner so that with a circulating chain (1) a signal is produced upon running past the first signal pick-up (4). Several further elements for signal generation (8) are arranged on a second chain link (6.2) in such a manner so that with a circulating chain (1) a further signal is generated with each one of these further elements (8) upon running past the second signal pick-up (5).

Abstract: A gripper head of a weaving machine has a clamping device for clamping a band-shaped weft material to be inserted into a loom shed of the weaving machine. The clamping device includes a stationary clamping jaw and a movable clamping jaw that is loaded by a spring and movable about a rotation axis. Each clamping jaw respectively has a clamping surface. The movable clamping jaw is actuatable by a control device to open the clamping device. The gripper head includes a frame, and the clamping surfaces are arranged essentially outside of the frame, but the spring and the rotation axis are arranged inside the frame.

Abstract: Shed formation on a weaving machine (2), which is driven by a main motor (3), with a shedding device (4), which is driven by a shedding motor (5), wherein in each motion cycle (N) of the weaving machine (2), a loom shed (7) formed by warp threads (8) of the weaving machine (2) is opened and closed dependent on a weave pattern, and wherein the synchronicity of the two motors (3, 5) is controlled by signals (10) of a control device (9). During a partial number (Tn1, Tn2) of motion cycles (N), the synchronicity of the two motors (3, 5) is changed in such a manner so that plural shed closure angles (FSW) at which the loom shed (7) in the respective motion cycles (N) is closed, form an increasing or decreasing sequence.

Abstract: Weaving machine (1) for producing a woven fabric (9) with shedding means (4) for alternately raising and lowering warp material (3) for forming a loom shed (5), with weft insertion means (6), which are arranged stationarily in the warp direction in a weft insertion zone (14), and which are for inserting a preferably tape-shaped or band-shaped weft material (7) into the loom shed (5), with drawing-off means (8) for drawing off the finished goods or woven fabric (9) in a drawing-off direction (AR), as well as with means (13, 10) for the fabric movement in the warp direction, by means of which the fabric edge (12) is moveable back and forth in a goods movement range (WB) between a downstream initial position (AG) and an upstream collecting or pick-up position (AH), in order to bring the respective last inserted weft material (7) into contact with the fabric edge (12) in the pick-up position (AH), characterized in that furthermore upper and lower limiting means (16) are provided, which limit the opening of the lo