156results about "Smallware looms" patented technology

The present invention generally relates to a woven preform for reinforced composite materials and a method of making thereof. Specifically, the present invention is a method of machine weaving fiber preforms for polymer matrix composites that consist of closed perimeters with multiple intersecting members in their interiors. More specifically, the invention is a woven preform and a method of forming thereof with closed cells at the outer edges with continuous hoop reinforcement in each cell of the preform. The woven preform is woven flat in both the warp and weft directions, and then unfolded to achieve the final shape of the structure, and can be processed into composite structural components using known methods such as resin transfer molding or chemical vapor infiltration. Thus, complicated shapes of all sizes can be woven on a conventional loom using the instant method.

A three-dimensional multilayer fabric is provided. The fabric comprises a surface layer, a backing layer, and an intermediate layer connecting the surface layer and the backing layer. The surface layer includes sequential unstitched surface portions and sequential stitched surface portions formed in an alternating and repeating pattern. The unstitched surface portions of the surface layer are essentially composed of surface warp threads only, and the stitched surface portions of the surface layer are composed of the surface warp threads and intermediate warp threads. The backing layer includes sequential unstitched backing portions and sequential stitched backing portions formed in an alternating and repeating pattern. The unstitched backing portions of the backing layer are essentially composed of backing warp threads only, and the stitched backing portions of the backing layer are composed of the backing warp threads and the intermediate warp threads. The intermediate warp threads are woven without interlacing with weft threads on the surfaces of the unstitched backing portions. The intermediate layer includes sequential intermediate portions composed of the intermediate warp threads only. Each of the intermediate portions consists of a first intermediate portion and a second intermediate portion connected to the stitched surface portions and the stitched backing portions in an alternating and repeating pattern. The connecting warp threads of the intermediate layer exposed to the outside of the backing layer are sheared. Further provided is a method for the production of the fabric.

In order to make it possible to weave in a conductive thread, in particular an antenna thread, in a very wide variety of ways in a ribbon needle loom for manufacturing a strip, in particular a label strip, having a shedding apparatus for forming a shed (24) from warp threads (8), a weft insertion needle (26) for inserting weft thread loops, a reed (30) and having a feed apparatus (34) for a thread which has a blade (34) which dips into the shed (24) between warp threads (8) as far as under the insertion path of the weft insertion needle (26), it is proposed that the blade is arranged on a shaft (38) which is oriented transversely with respect to the warp direction. The shaft is connected to a first drive apparatus (40a) for performing a pivoting movement of the shaft. As a result of the pivoting, the blade (34) dips into and out of the shed (24). Furthermore, the shaft is connected to a second drive apparatus (44a) for movement in the axial direction. As a result, the blade (34) can be moved over the width of the strip (2).

The invention relates to a method for producing a woven belt strap (1), particularly an automobile safety belt strap, which is characterized in that the weft threads (8, 9) are alternately inserted from one belt strap side and then from the other belt strap side, during which at least the first of both warp threads (11, 11', 15, 15') remain on the respective weft entry side without being woven, and a catch thread (14, 14'), which loops the weft on the weft exit side, is drawn into the weave until the warp threads, which remained unwoven with the preceding weft, are woven by the catch thread loop.

The invention relates to a ribbon needleloom, comprising a heald device, forming a shed, which comprises heald frames (30), supporting heddles, at least one weft needle, at least one thread-feed device, a knitting needle, arranged on the side of the shed away from the weft needle and a reed. According to the invention, the heald frame (30) may be improved, by comprising at least one heald frame support (66), with a hollow rod (68) with an upper lateral introduction opening (72) for an upper heald rail (62) and a lower lateral introduction opening (74) for a lower heald rail (64), whereby the upright heald rails (62,64) are connected by means of a pressure rod (76) arranged in the hollow rod (68) and are tensioned against each other by means of a tensioning screw (78), arranged on an end piece of the hollow rod (68) coaxial to the pressure rod (76).

The loom contains a weaving station, at which warp yarns can be interwoven by means of at least one weft yarn, a device for supplying the warp yams, and a device for supplying the at least one weft yam. A shedding device for forming a shed from the warp yarns, and a weft insertion needle for inserting a weft yarn loop into the shed, are also present. The weft yam loop is tied off with a knitting needle and beaten with a reed. A take-down device serves to draw off the woven fabric that is produced. In order to produce a profiled woven article, the weaving station is assigned a fabric holder with a shaping aperture whose opening cross section corresponds substantially to the cross section of the profiled woven article that is to be produced with a round or polygonal cross section.

The invention relates to a method for weaving a webbing, comprising at least one first (right-hand) weft thread and at least one second (left-hand) weft thread, characterized in that the two weft threads are introduced into the same shed from both sides of the webbing, are wound around weft thread retainers in weft change loops, are substantially retained by the weft thread retainers until shed change and are then stripped off from the left thread retainers by the reed and after shed change and are bound against the stop.

A method of forming color change fiber, comprises preparing polymer base material and preparing color changeable material; mixing said polymer base material and said color changeable material with a weight percentage ratio; loading said mixed said polymer base material and said color changeable material into a melting apparatus; forming polymer fiber by spinning, weaving process, wherein said polymer fiber is color changeable when sunlight irradiates on said polymer fiber.

The invention discloses a novel high-speed flat ribbon loom which comprises a rack. A power mechanism, a warp feed mechanism, a weft feed mechanism, a catch end feed mechanism, an opening mechanism, a connecting rod weaving mechanism and a winding mechanism are arranged on the rack. The opening mechanism comprises a heald frame, a long-handled scimitar and spline pieces installed on a hub shaft. Due to the fact that wallboards of the rack are of an integrated structure, structural strength of the flat ribbon loom is improved, installation difficulty is lowered at the same time, the problem that a fault is prone to occurring due to the fact that bearing holes of the two wallboards are not concentric in a high-speed operation process is avoided, stable operation of the flat ribbon loom is guaranteed, and the service life of the shaft and bearings is prolonged; meanwhile, a transmission structure of the flat ribbon loom is redesigned, worm gear cases and a worm and gear structure with high machining and mounting difficulty are omitted, a mechanical structure is simpler and durable, and installation and maintenance cost is lower; loom body width and braid ribbon number limits are eliminated, the speed and yield of ribbons can be greatly improved, and production efficiency is improved.

The invention concerns a yarn brake (B) comprising a brake (L) electromagnetically stressed against a fixed braking surface (17), a housing (1) whereon the cover bearing the brake (L) is mounted such that it is capable of being lifted relative to the fixed braking surface (17), and at least an adjusting arbor (S) controlling the lifting movements of the cover, said arbor being mounted on the housing (S) in geometric association to the path of the yam (W). The invention is characterised in that the cover is a flap cover (K) mounted so as to be capable of being lifted about the adjusting arbor (S) for completely clearing the braking zone (12) of the yam tension device (B).

The invention relates to a tension control and compensation mechanism of a sample loom. The tension control and compensation mechanism is characterized by comprising a let-off support, let-off tension disks and a tension compensation mechanism, wherein a plurality of let-off tension disks for clamping warp yarn at certain pressure are uniformly distributed on the let-off support along the horizontal direction, and the tension compensation mechanism is installed above the let-off support. When the warp yarn tension is higher, a strip-shaped elastic sheet is bent to reduce the warp yarn tension so that the warp yarn tension keeps consistent, so that cracked ends caused by ultra-high tension are avoided. When the warp yarn tension decreases, a strip-shaped tension compensating sheet resets and unbends to return to the original position, and the warp yarn is tensioned so as to avoid the unclear shed. The structure is utilized for being matched with an original warp yarn system of the sample loom to realize the independent and stable let-off control on two or more types of warp yarn, so that the sample loom can be used for test weaving of seersucker, spandex fabric and patterned fabric, the test weaving range of the sample loom is expanded, and the equipment investment cost is reduced.

A method of converting an elongated web of filamentary textile material into lengths; of coherent labels for application to garments includes placing a first row of selvage on the web at a first predefined distance from a first outer edge thereof, the first predefined distance being greater than zero, placing a second row of selvage on the web at a second predefined distance from a second outer edge thereof, the second predefined distance being greater than zero, and placing at least a third row and a fourth row of selvage on the web between the first and second rows, a portion of the filamentary material separating each of the rows from the other. A following step includes cutting the web along a line lying between the third and fourth rows of selvage and at a predefined distance away from each of the third and fourth rows of selvage, the predefined distance being greater than zero.

A textile made by weaving while crossing stainless wires as warp yarn and silk yarns as weft yarn one by one alternately, and this textile is attached to a frame body to configure a wire grid. The pitch for the stainless wires is determined depending on a wavelength to be polarized and analyzed. Furthermore, the silk yarns are removed if necessary. This configuration avoids problems with cutting of metal wire or irregular intervals between metal wires because of long fine metal wires tightened parallel to each other in the frame body, and problems such as multiple reflection or interference on a substrate or a base material because of fine wire patterns made by etching or the like with the use of the substrate or base material, thereby obtaining an easily-manufactured, low-cost and high-precision wire grid for polarization and analysis of electromagnetic waves.

A jacquard ribbon loom with a central column, comprises a hollow central column over the machine platform, the main driving belt in the central column, a spigot and a power transmission member on thetop end of the central column, weft transmission member symmetrically on the two sides of the central column. The light jacquard ribbon loom is compact and stable due to the hollow central column.

The invention discloses a portable semi-automatic Kesi-weaving machine device. The portable semi-automatic Kesi-weaving machine device comprises a frame, a warp-conveying device, a wefting device and a coiling device. A motor opening device is arranged between the warp-conveying device and the coiling device. A pattern-reflecting plate is further installed between the motor opening device and the coiling device. The position, where the right side of the pattern-reflecting plate protrudes out of the frame, is provided with a pattern-reflecting plate hand wheel. A weft-beating device is arranged between the wefting device and the coiling device. The portable semi-automatic Kesi-weaving machine device has following advantages: the portable semi-automatic Kesi-weaving machine device is conveniently carried and favorably used for modern teaching; transfer from factorization to small-sized home-based design is achieved; a conventional mode of drawing on warp yarns is discarded so that a weaving mode is further realized; by adoption of the method of the pattern-reflecting plate, the effect of not deforming a finished product is achieved; and the opening device is flat during opening operation so that bright light rays are realized for facilitating selecting wefts.

In order to improve a loom for producing woven material (10) with an incorporated cover thread (12), it is proposed to provide a laying device for at least one cover thread (12) and also a warp-laying device (9) with warp-laying elements (14) for laying further warp threads (8). The warp-laying device (9) is designed such that it can make the further warp threads (8) penetrate from a starting position through the upper shed (5) to the lower shed (4), or through the lower shed to the upper shed, and therefore the weft-insertion device (7) crosses the further warp threads (8). The laying device has at least one cover-thread guide (13) which, in the starting position of the warp-laying device (9), can be displaced transversely to the warp threads (2) by way of a transverse-movement means.

The invention relates to a sample loom used for test weaving of leno weave. The sample loom comprises a frame, wherein the frame is sequentially provided with a back rest, heald frames, a sley and a breast beam from back to front, wherein a warp beam and a cloth roller are installed below the back rest and the breast beam; and a reed is installed on the sley. The sample loom is characterized in that each heald frame comprises a leno heald frame provided with leno heald; the upper end of each heald frame is connected with an electronic heald lifting mechanism for driving the lifting of the heald frame; the lower end of the heald frame is connected with a heald returning spring; and the back rest is provided with a let-off tension control mechanism. By utilizing the let-off tension control mechanism for controlling the doup end tension, the doup end tension keeps consistent, cracked ends and unclear shed caused by ultra-high tension born by doup ends in the twisting of the doup ends and standard ends are avoided, and leno weave samples are woven by combining conventional heddle with the doup ends. The woven leno weave sample fabric is small in difference and strong in representativeness, and the test weaving of samples does not need to be conducted on a large loom. The sample loom is simple in structure and low in equipment cost, reduces the research and development investment, and saves effective resources.

A device for driving crochet needles of a reaphook type braiding machine is provided, which comprises a rotary electrical actuator (6), the output shaft (7) of the rotary electrical actuator (6) is connected with a plurality of crochet needles (5)in dynamic linkage through devices (8,9) used for converting the rotation (F5) to translation (F2).