| Method for weaving curved warp yarns and a woven fabric -> Monitor Keywords |
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Method for weaving curved warp yarns and a woven fabricRelated Patent Categories: Textiles: Weaving, Special-type LoomsMethod for weaving curved warp yarns and a woven fabric description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070079886, Method for weaving curved warp yarns and a woven fabric. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001] The present invention relates to the method for weaving curves on shuttle woven fabrics in the field of textile art. BACKGROUND ART [0002] Shuttle woven fabrics are means of livelihood and means of production widely used by mankind nowadays. They have wide applications in the field of clothing face fabric, decoration cloth materials and cloth used by the industries. The conventional shuttle woven fabrics follow all along the art requirement of perpendicular crossing of warp (longitudinal direction) and weft (transverse direction) and the cloth is woven by means of coordinative operation of five motions of warp let off, shedding, weft insertion, weft beating-up and take-up of the weaving machine. Especially all the current conventional metal reeds adopt vertical dents, all reeds dents are the same length, all metal reed dents are arranged in paralleled upright (of straight) direction and the density is all the same. The metal reed is fixed by the slay during the motion of Weft beating up, the metal reed is not allowed to have any looseness. [0003] The Structure of the current weaving machine is shown in FIG. 1. It includes, loom beam 11, back beam 12, warp Stopping blade 13, heddle frame 14, reed blade 15, weft insertion device 16, take-up wheel 17, guiding roller 18, cloth roller 19. Shuttle woven fabrics (also called woven fabrics or fabrics for short) are sheet like complex interwoven by warp 100 (longitudinal length) parallel to cloth edge and weft 200 (transverse width) perpendicular to cloth edge according to a regular rule. The principle for forming the fabric is: The loom beam 11 is located in the lower part at the back of the weaving machine on which are wound parallel warps. The loom beam is driven by warp let-off unit. After the warp 100 is sent out from the loom beam 11, it rounds the back beam 12, penetrates into the warp stopping blade 13 of the warp broken-end. Stop motion, the heddle 6 on the heddle frame 14 and the reed blade 15 of the metal reed. The weft 200 is guided into the shed by the weft insertion unit 16 (shown in the FIG. 1 is a shuttle) and the fabric 10 is formed at the shed. Afterwards, the fabric, drawn by the take-up wheel 17, Passes through the guiding roller 18, and finally is wound on the cloth roller 19. The above mentioned current weaving method and equipment make the outer appearance of the woven fabric rather dull, that is, all warp and weft cross into right angle crossed state, all warp and wed on cloth face side present straight line crossing, with all transverse lines being horizontal and all vertical lines being straight, and the density being the same. Therefore the design and the color of the fabric is limited in a certain degree. SUMMARY OF THE INVENTION [0004] In order to overcome the monotony of the current loom woven fabrics, the present invention aims to provide a kind of curve weaving method for shuttle woven fabrics and to provide fabric products. Such method, with new texture and ingenious designs, enables the woven fabrics to have the curved strip shape pattern of orderly sparseness and denseness which can upgrade the grade of the products by means of simple process. [0005] The technical scheme adopted by the present invention has the following steps: [0006] a) Straight and slant warp let-off; by means Of the cooperation of the warp let-off unit of the weaving machine, feeding the warp on the loom beam to the cloth tell of fabric, the fed quantity of the warp matches the take-up quantity required by the take-up unit. During the course of feeding warp, the lifting and descending unit draws the metal reed with vertical and slant dents the spacing between which is variable to make up and down reciprocating movement and to make the warp restricted by the slant reed blade of the metal reed to form the slant line state with respect to the fell of cloth, in which state, the slant (inclined) degree of the warp varies, and the warp will be sent to the fell of cloth of the fabric in the straight and slant line state. [0007] b) Shedding: the warp is divided into two upper and lower layers according to the process conditions of the fabric by the shedding unit of the weaving machine to form a rhombus shed and the shed thus formed makes the alternating up-down movement to provide the space for weft insertion. [0008] c) Weft insertion: under the action of the weft insertion unit, the wed insertion device inserts the weft between the two layers of warp which have formed into a rhombus shed. [0009] d) Beating up by lifting and descending movement: beating up the weft into the fell of cloth by means of the lifting and descending motion of straight vertical and slant dent metal reed mounted in the sliding groove of the slay and by making the forward and backward sector swing following the slay. [0010] e) Take-up: the take-up unit draws the fabric away from the fell of cloth. [0011] In the above-mentioned method, the lifting and descending range (amplitude) and the lifting and descending speed of the lifting and descending mechanism can be varied according to the process requirement. [0012] A kind of warp curve fabric of shuttle woven fabric, its feature is that the woven fabric product is woven by the slant line let-off warp and the weft which are in a non perpendicular crossing manner, the said warp presents a gradually and orderly varied curve arrangement in the fabric. The outward appearance of the fabric presents an obvious or hidden curve pattern. [0013] In the above-mentioned warp curve fabric of shuttle woven fabric, the warp and the wed are raw materials of various textile fibers, their colors may be the same or different one from the Other. [0014] A kind of special equipment for weaving warp curve fabrics, its feature is that it includes the lifting and descending component which is connected to the metal reed on the weaving machine and the driving component for driving the lifting and descending component; the said metal reed is a reed with straight and slant dents the spacing between which is variable. [0015] This metal reed with straight and slant dents the spacing between which is variable includes reed balk, reed blade and side reed crosspiece, said reed balk consists of upper reed balk and lower reed balk, multiple reed blades are respectively fixed in a slant or vertical manner between the upper reed balk and the lower reed balk, there are two side reed crosspieces which are situated on the two ends of the metal reed and are fixed respectively between the upper reed balk and the lower reed balk, the said driving component is disposed between the lifting and descending component and the cloth roller of the weaving machine. [0016] In the above-mentioned special equipment for weaving warp curve fabrics, the said reed with the straight and slant dents the spacing between which is variable is formed by the combination of multiple dent segments, the reed blades of each dent segment are arranged in a manner of sparseness and denseness from top to bottom or in a manner of sparseness and denseness from bottom to top. There are multiple reed blades disposed upright in each dent segment. The reed blades which form each such dent segment are arranged as straight-slant dent sparseness and denseness combination form, there is also a sliding groove which is fixed on frame of the machine, and the two ends of the metal reed with straight and slant dents the spacing between which is variable are disposed in the said sliding groove and can lift or descend in the sliding groove. [0017] In the above-mentioned special equipment for weaving warp curve fabrics, there is still a bush mounted on the loom swing shaft and the lifting and descending component is fixed on the bush. [0018] In the above-mentioned special equipment for weaving warp curve fabrics, the lifting and descending unit may consist of a lifting and descending mechanism in which the lifting and descending speed and travel distance can be changed. [0019] In the above-mentioned special equipment for weaving warp curve fabrics, the said driving component is a chain type driving mechanism, its driving chain wheel is mounted on the cloth roller of the weaving machine, and the driven chain wheel is mounted on the bush of the loom swing shaft. [0020] The present invention features the new structure, it can weave fabrics with Curve patterns having orderly sparseness and denseness, especially, the warp direction color strips on the face side of the dyed-yarn woven fabric have the graceful Curve form state and it can be used on currently available weaving machines having shuttle or without shuttle, it can upgrade markedly the rank (grade) of the products. BRIEF INTRODUCTION OF THE ACCOMPANYING DRAWINGS Continue reading about Method for weaving curved warp yarns and a woven fabric... Full patent description for Method for weaving curved warp yarns and a woven fabric Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Method for weaving curved warp yarns and a woven fabric patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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