CN1330808C

CN1330808C - Loom let-off bobbin rack for wearing flat coarse warp woven fabric

Info

Publication number: CN1330808C
Application number: CNB2003101226524A
Authority: CN
Inventors: 李国生; 朱苏康
Original assignee: Shanghai Textile Research Institute; Donghua University
Current assignee: Shanghai Textile Research Institute; Donghua University
Priority date: 2003-12-23
Filing date: 2003-12-23
Publication date: 2007-08-08
Anticipated expiration: 2023-12-23
Also published as: CN1554819A

Abstract

The present invention relates to a loom let-off bobbin rack for weaving flat coarse warp woven fabric in a textile industry, such as large tow carbon fiber woven fabric. The present invention is characterized in that a plurality of base racks which form in a ladder shape like the Chinese character 'ba', the base racks which are paralleled to the breadth direction of a loom are arranged at the back of the loom, the base racks are aligned right and left, two working faces of the base racks present an included angle from 10 DEG to 20 DEG, and the height of a yarn guiding ceramic hole of the front working face is lower than that of [a] yarn guiding ceramic hole of the back working face by 10mm to 30mm; each working face is provided with 7 to 8 layers and 8 to 9 rows of bobbins, the bobbins at the lower layer are deviated toward one direction with that of the corresponding bobbins at the upper layer in parallel, an interval of a yarn guiding hook and a corresponding bobbin rotation shaft is larger than 250mm, and operation passages are arranged among the base racks. The present invention has the advantages of uniform warp tensile force, high fabric rupture strength, low warp space running crossing abrasion and small occupation area, and the bobbin rack has simple structure.

Description

The loom let-off bobbin cradle of weaving flat coarse warp woven fabric

Technical field

The present invention relates to a kind of loom let-off bobbin cradle, particularly weave the loom let-off bobbin cradle of flat coarse warp woven fabrics such as large-tow carbon fiber woven fabric.

Background technology

The large-tow carbon fiber woven fabric is that a kind of carbon fiber that is used for composite strengthens framework material, uses the rigid rapier weaving machine weaving usually, is widely used in the member of Aeronautics and Astronautics device and bridge, building, the repairing of large-scale structures, enhancing.Because very thick as the carbon fiber bundle of warp thread, the warp on loom system of broadcasting of beam of a loom form can not satisfy continuously, produce in enormous quantities weaves needs.Therefore, from bobbin cradle, directly draw the large-tow carbon fiber warp thread, enter loom and weave, become the preferred plan that replaces the beam of a loom warp let-off.This scheme has also been cancelled warping technology, helps reducing fractureing, wearing and tearing of carbon fiber warp thread, guarantees the high strength and the intensity uniformity of framework material.

Figure 1 shows that existing a kind of loom let-off bobbin cradle schematic diagram of directly drawing warp thread, bobbin cradle and vertical setting of loom fabric width direction.Carbon fiber warp thread 4 is sent to loom from cheese 2 unwindings.Produce friction with bobbin rotating shaft 3 during bobbin 2 revolution in the unwinding process, be provided with the size that isolated plant is regulated this frictional force, and then the uniformity coefficient of adjusting warp tension, prevent that warp thread from excessively sending.The long-pending total quantity of warps that equals fabric of bobbin cradle top cylinder sublayer number and bobbin columns, because the fabric total quantity of warps is many, the bobbin package is big, owing to operated limitation in height, make the number of plies of bobbin generally be no more than 8～9 layers, therefore again, the bobbin columns must be bigger, causes to adopt longer bobbin cradle., contact space crossed for the yarn of avoiding unwinding must design be adopted bigger bobbin cradle both sides angle α.The bobbin cradle of this form causes warp thread tension force when passing through the expansion reed at loom rear significantly irregular, and the complications of yarn, wearing and tearing increase, and fabric mechanics is brought very adverse influence; And the bobbin cradle floor space is big, and it is far away that the workman operates route.

Summary of the invention

At the problems referred to above, the present invention proposes a kind of loom let-off bobbin cradle of new structure, purpose is to make warp tension even, and wearing and tearing reduce, and easy to operate, floor space is little.

The loom let-off bobbin cradle of prior art comprises several pedestals, is located at bobbin and bobbin rotating shaft on the pedestal, twizzle, tensioner, the yarn poteye of bobbin top and be positioned at lever jack on the pedestal top.Taked following measure for addressing the above problem the present invention.

1. adopt several pedestals of Eight characters staircase shape, pedestal is parallel with loom fabric width direction, be arranged at the rear of loom, align about each pedestal, the angle of former and later two working faces of pedestal is 10 °～2 0 °, yarn poteye on the leading face is than the low 10～30mm of yarn poteye on the back working face, and bobbin, bobbin rotating shaft, twizzle, all parts of tensioner are symmetrical arranged on former and later two working faces of pedestal.

2. the installation tube subnumber is 7～8 layers up and down on each working face of pedestal, about 8～9 row, i.e. 56～72 bobbins; Each row is consistent with the spacing of each layer bobbin, but down the position of one deck bobbin all is offset distance greater than 5mm to a direction abreast than the corresponding bobbin of last layer, avoids the mutual interference of unwinding warp thread phase.

Between twizzle and its corresponding bobbin rotating shaft distance greater than 250mm, to reduce unwinding tension and to prevent that the unwinding warp thread from intersect twining.

4. be provided with the operation aisle that width is 400～500mm between each pedestal.

Advantage of the present invention is: warp tension is even, and fabric breaking strength improves, and the fracture strength irregularity descends; The warp thread wearing and tearing reduce, and fabric is bright and clean, and weavy grain is even straight; Bobbin cradle is simple in structure, and it is easy to operate to keep off a car, and floor space is little.

Description of drawings

Accompanying drawing 1 is a kind of existing loom let-off bobbin cradle schematic diagram; Accompanying drawing 2 is general structure schematic diagram of the present invention; Accompanying drawing 3 is partial structurtes schematic diagram of the present invention; Accompanying drawing 4 is the structural representation of bobbin arrangement position skew on the working face.Among the figure:

1. the pedestal of bobbin cradle; 2. bobbin; 3. bobbin rotating shaft; 4. carbon fiber warp thread; 5. twizzle 6. tensioners; 7. yarn poteye; 8. lever jack; The leading face of A-pedestal; The back working face of B-pedestal; The angle of α-existing bobbin cradle both sides warp thread; Angle between pedestal two working face A, the B of β-Eight characters staircase shape of the present invention.

The specific embodiment

Material that each member of the present invention is adopted and existing loom let-off bobbin cradle indistinction do not have specific (special) requirements.Be symmetrically installed with bobbin 2, bobbin rotating shaft 3, twizzle 5, tensioner 6 on pedestal 1 two working face A, B, and yarn poteye 7, pedestal 1 top is equipped with lever jack 8, yarn poteye on the leading face is than the low 20mm of yarn poteye of back working face, the angle of working face A, B is 15 °, totally 63 of 7 layer of 9 row of bobbin are installed on each working face, and pedestal 1 is established 5 altogether, 630 of total quantity of warps.The wide 450mm in operation aisle between the pedestal 1, between twizzle 5 and the corresponding bobbin rotating shaft 3 apart from 320mm, lower floor bobbin position all is offset 8mm to the right abreast than the corresponding bobbin of last layer.

In the weaving process, carbon fiber warp thread 4 is from bobbin 2 unwindings, upwards arrive twizzle 5 with working face with paralleling, vertically upward by tensioner 6, yarn poteye 7, guide loom into then via lever jack 8 back horizontal directions, forward parallel from the warp thread piece that each working face is drawn, each warp thread does not disturb aloft the time mutually, draw the warp tension basically identical, arrange in order, help arranging yarn operation, running observation and broken end and handle.

Claims

1. the loom let-off bobbin cradle of weaving flat coarse warp woven fabric, comprise bobbin (2), bobbin rotating shaft (3), twizzle (5), tensioner (6), yarn poteye (7) and lever jack (8) on several pedestals (1), the pedestal (1), it is characterized in that described pedestal (1) is Eight characters staircase shape, and be arranged at the rear of loom abreast with loom fabric width direction, align about each pedestal, the angle β of former and later two working faces of pedestal (1) A, B is 10 °～20 °, and the yarn poteye on the leading face A (7) is than the low 10～30mm of the last yarn poteye of back working face B; Bobbin (2), bobbin rotating shaft (3), twizzle (5), tensioner (6) are symmetrical arranged on former and later two working faces of pedestal (1) A, B.

2. loom let-off bobbin cradle as claimed in claim 1, it is characterized in that the installation tube subnumber is 7～8 layers up and down on each working face of pedestal (1), about 8～9 row, and down the position of the bobbin of one deck than the corresponding bobbin of last layer all abreast to the distance of a direction skew greater than 5mm.

3. loom let-off bobbin cradle as claimed in claim 1 or 2 is characterized in that distance between twizzle (5) and its corresponding bobbin rotating shaft (3) is greater than 250mm.

4. loom let-off bobbin cradle as claimed in claim 1 or 2 is characterized in that being between each pedestal (1) the operation aisle of width 400～500mm.