High-efficiency weaving and let-off method for double-layer lint

Abstract

The invention discloses a method for double-layer lint high-efficiency weaving. The method comprises steps of electronic let-off and the arrangement of positions of ground warps and pile warps, wherein the electronic let-off refers to that the ground warps and the pile warps are respectively arranged on a pile warp disc and a ground warp disc of an independent electronic let-off device, the ground warps and the pile warps are respectively arranged at an upper layer and a lower layer; as to the arrangement of positions of the ground warps and the pile warps, a yarn dividing device is used for dividing the ground warps into an upper layer and a lower layer; the ground warps and the pile warps at each layer form a diamond shed and then are sent to a shedding mechanism of a weaving machine. The let-off method realizes the tension uniformity of the ground warps and the free adjustment of the quantity and position height of the pile warps according to the requirements of a double-layer lint high-efficiency weaving process and can meet the requirements of double-layer lint high-speed air injection high efficiency weaving let-off process.

Description

technical field [0001] The invention relates to a warp let-off method for efficient weaving of double-layer fleece, which belongs to the technical field of textiles. Background technique [0002] Consistent and uniform ground warp tension, accurate pile warp position, and adjustable pile height are the basic requirements for high-speed weaving of double-layer fleece. [0003] At present, one kind of weaving of double-layer flannelette is the weaving technology of shuttle loom, which is affected by the low speed of the host machine of shuttle loom (below 150r / min), and mainly has low weaving efficiency (only about 10 meters can be weaved in 8 hours). double-layer flannelette), while using mechanical warp let-off and single shed technology, the adjustment of warp tension is not accurate, and the fabric quality is very unstable; the other is the weaving technology of rapier loom or low-speed air-jet loom. Similarly, affected by the low speed of the rapier loom and the low-spee...

AI Technical Summary

Problems solved by technology

[0003] At present, one kind of weaving of double-layer flannelette is the weaving technology of shuttle loom, which is affected by the low speed of the host machine of shuttle loom (below 150r / min), and mainly has low weaving efficiency (only about 10 meters can be weaved in 8 hours). double-layer flannelette), while using mechanical warp let-off and single shed technology, the adjustment of warp tension is not accurate, and the fabric quality is very unstable; the other is the weaving technology of rapier loom or low-speed air-jet loom. Similarly, affected by the low speed of the rapier loom and the low-speed air-jet loom (below 230r / min), there is also the problem of low weaving efficiency. Pile warp beams and ground warp beams are used to complete the let-off movement, but the warp let-off movement is mechanical let-off, which has disadvantages such as uneven warp let-off and inconvenient manual tight yarn feeding; and its double shed weaving technology, in the warp opening During the process, only one layer of warp yarns is lifted or lowered, while the other layer of warp yarns does not move, so the elongation of the upper and lower layers of warp yarns is different, resulting in excessive tension differences, resulting in unclear openings, affecting smooth weft insertion, and causing fabric defects ;At the same time, the velvet warp shaft adopts the method of friction disc to send the velvet warp, and the control of the velvet feeding amount is mechanically controlled, and the velvet warp gear can be adjusted to achieve different velvet heights. Through the gear, there is a disadvantage of inconvenient operation

Therefore, none of them can meet the warp let-off requirements of high-efficiency weaving of double-layer fleece, so that high-speed air-jet weaving of double-layer fleece cannot be realized.

[0004] At the same time, although the existing high-speed air-jet looms all use single-shed electronic warp let-off and electronic cashmere delivery, it is obvious that single-shed electronic warp let-off and electronic cashmere delivery cannot meet the requirements of large yarn volume for double-layer weaving; Electronic let-off and velvet delivery, but when weaving double-layer velvet, a large amount of ground warp and velvet warp are required under the high-speed weaving state of the main shaft, but due to the large amount of ground warp, it is first The amount of warp delivery is limited, even when a large amount of ground warp is sent, the warp tension will be very uneven, which cannot meet the requirements of warp delivery for weaving double-layer fabrics. The same problem exists in electronic cashmere feeding, and the cashmere height adjustment cannot be realized.

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