阅读说明：本技术 一种辅助高性能织物织造纬纱引入装置、织机及方法 (Weft yarn introducing device, loom and method for assisting high-performance fabric weaving ) 是由 张典堂 段亚弟 钱坤 于 2020-04-30 设计创作，主要内容包括：本发明公开了一种辅助高性能织物织造纬纱引入装置,包括两段圆角三棱柱体纬纱引入辅助装置部分,左右各自一段固定安装在打纬机构旁边。针对在织造高性能纤维高厚平板及回转体织物时开口不清的问题,提出一种纬纱引入辅助方式,目的在于获得更清晰的梭口,有利于引纬。采用本发明纬纱引入辅助方式,能够使得在织造高性能织物中开口清晰,减少纱线摩擦磨损,降低参数离散性,提升织物体积含量,保证织物外观平整,对之后高性能织物增强复合材料的性能起着关键作用。(The invention discloses an auxiliary high-performance fabric weaving weft yarn introduction device which comprises two sections of rounded triangular prism weft yarn introduction auxiliary device parts, wherein the left section and the right section are respectively and fixedly arranged beside a beating-up mechanism. Aiming at the problem that the opening is not clear when weaving high-performance fiber high-thickness flat plates and revolving body fabrics, a weft yarn introduction auxiliary mode is provided, and the weft yarn introduction auxiliary mode aims to obtain a clearer shed and is beneficial to weft insertion. By adopting the weft yarn introduction auxiliary mode, the method can clear the opening in the woven high-performance fabric, reduce the friction and wear of the yarn, reduce the parameter discreteness, improve the volume content of the fabric, ensure the smooth appearance of the fabric, and play a key role in the performance of the subsequent high-performance fabric reinforced composite material.)

1. The weft yarn introduction device for assisting high-performance fabric weaving is characterized by comprising at least two sections of rounded triangular prisms (5), wherein at least one of the top angles of the cross section of each section of rounded triangular prism (5) is a rounded corner, and the edge corresponding to the rounded corner faces towards a fabric (1).

2. The device for assisting the introduction of weft threads for the weaving of high-performance fabrics according to claim 1, characterized in that the rounded triangular prism (5) has a cross section in the form of an isosceles or equilateral triangle.

3. The weft yarn insertion device for assisting in weaving of high-performance fabrics according to claim 1 or 2, characterized in that the three apex angles of the cross section of the rounded triangular prism (5) are rounded structures with equal radius.

4. A weaving machine comprising a weaving machine body, characterized in that a weft insertion device for assisting the weaving of a high-performance fabric (1) according to any one of claims 1 to 3 is additionally arranged on the weaving machine body.

5. Weaving machine according to claim 4, characterized in that the rounded triangular prisms (5) are arranged on both sides of the weaving machine body, mirror-imaged or symmetrical with respect to the weaving machine body.

6. The loom of claim 5, wherein the power take-off structure is provided on each side of the loom body, and the power take-off structure comprises:

the rotary driving devices are positioned on two sides of the loom body, and output shafts face to the rounded triangular prism (5) and are driven by the main shaft;

and the cam component is connected with an output shaft of the rotary driving device, and the output position of the cam component is connected with the rounded triangular prism (5).

7. Weaving machine according to claim 5, characterized in that the rounded triangular prism (5) is provided with connecting elements (4) on its two end faces facing away from each other, which connecting elements (4) connect the rounded triangular prism (5) to the output position of the cam assembly for the transmission of power of the weaving machine.

8. A weaving machine as claimed in claim 5 wherein the cam assemblies on either side of the weaving machine body move in synchronism.

9. A method for inserting weft yarns into an auxiliary high-performance fabric (1), characterized in that a weft yarn inserting device for weaving of the auxiliary high-performance fabric (1) according to any one of claims 1 to 3 and a weaving machine according to any one of claims 4 to 8 are applied.

10. A method for assisting the weft insertion of a high-performance fabric (1), characterized in that it comprises the following steps: before weft insertion, the initial positions of the rounded triangular prisms (5) are positioned at two sides of the loom body and keep a distance with the shed (2); starting the loom body, wherein the rounded triangular prism (5) moves along the weft direction and extends into the shed (2); at the moment, the rotary driving device is started to drive the cam component to rotate, the cam component drives the rounded triangular prism (5) to move along the warp direction, the rounded triangular prism (5) is pushed to the fabric (1) from the weaving opening along the lower layer of warp in the shed (2), and the two sections of cylinders respectively exit from the shed (2) after finishing the carding work; and (4) weft insertion and beating-up of the loom body to finish weaving work.

Technical Field

The invention relates to the technical field of textile accessories, in particular to an auxiliary high-performance fabric weaving weft yarn introducing device.

Background

Due to the poor cohesion and transverse performance of high-performance fibers such as carbon fibers, silicon carbide fibers, quartz fibers and the like, when the high-thickness flat plate and revolving body fabrics are woven by the fibers, fiber entanglement and hairiness are increased frequently, so that the opening is unclear, the yarn strength is reduced, the production efficiency is reduced, and finally the mechanical property and the quality of the high-performance fiber reinforced composite material cannot be guaranteed.

How to improve the opening clearness is a key problem for ensuring the weaving of high-performance fabrics. Generally, in the conventional weaving process, weft insertion is performed immediately after the shedding. However, the fibers are intertwined during weaving, the shed opening is unclear, and the upper and lower layer warps are not in the same plane in the front of the shed. The effective space at the front part of the shed is the smallest, the weft insertion condition is the worst, the front and back integrated stroke and the tension are similar, the density of the warp yarns for weaving the fabric is high, and the pile yarn defects are increased.

Disclosure of Invention

The invention aims to provide an auxiliary high-performance fabric weaving weft yarn introduction device, wherein before weft insertion, the auxiliary weft insertion device is added to improve the opening definition and ensure weft insertion, so that the weaving related key effect of high-quality high-performance fabric is realized; the method has the advantages of keeping weaving openings clear, reducing the friction of yarns and ensuring the strength of the yarns and the quality of fabrics. The technical scheme is as follows:

the utility model provides an auxiliary high performance fabric weaving woof draw-in device, includes two sections at least fillet triangular prism, has at least one in every section fillet triangular prism's the cross section apex angle for the fillet, and the edge that the fillet corresponds is towards the fabric.

Further, the cross section of the round triangular prism is an isosceles or equilateral triangle.

Further, three apex angles of the cross section of the rounded triangular prism are rounded structures with equal radius.

Another object of the present invention is to provide a loom including a loom body, wherein the loom body is further provided with an auxiliary high-performance fabric weaving weft yarn insertion device as described in any one of the above.

Furthermore, the rounded triangular prisms are arranged on two sides of the loom body in a mirror image or symmetrical mode by taking the loom body as a reference.

Further, loom body both sides respectively are equipped with power take off structure, and power take off structure includes: the rotary driving devices are positioned on two sides of the loom body, and output shafts face to the rounded triangular prism and are driven by the main shaft; and the cam component is connected with an output shaft of the rotary driving device, and the output position of the cam component is connected with the rounded triangular prism.

Furthermore, two end faces of the rounded triangular prism, which deviate from each other, are respectively provided with a connecting piece, and the connecting pieces are used for connecting the rounded triangular prism to the output position of the cam assembly and transmitting the power of the loom.

Further, the cam assemblies on both sides of the loom body move synchronously.

The invention also aims to provide an auxiliary high-performance fabric weft yarn introduction method, which applies any one of the auxiliary high-performance fabric weaving weft yarn introduction device and the weaving machine; the method comprises the following steps: before weft insertion, the initial positions of the rounded triangular prisms are positioned at two sides of the loom body and keep a distance from a shed; starting the loom body, wherein the rounded triangular prism moves along the direction of the weft and extends into a shed; the rotary driving device is started to drive the cam component to rotate, the cam component drives the rounded triangular prism to move along the warp direction, the rounded triangular prism is pushed to the fabric along the lower layer of warp in the shed, and the two sections of cylinders respectively withdraw from the shed after finishing the carding work; and (4) weft insertion and beating-up of the loom body to finish weaving work.

The invention has the following beneficial effects:

1. the invention creatively adds a weft yarn introduction auxiliary device on the traditional loom, which comprises two sections of rounded triangular prism weft yarn introduction auxiliary device parts, wherein the left section and the right section are fixedly arranged on two sides of a loom body respectively. Because high performance fiber is easily fluffed and tangled when weaving, and fluffing is along the yarn direction, uses this auxiliary device, before the wefting insertion, the lower floor warp in the shed is being followed to the fillet triangular prism, through the motion from weaving the mouth to the fabric direction, and the fibre that will stretch out the line body is combed smoothly, has improved the shed definition to the wefting insertion. The textile structure thus treated can protect yarn strength, reduce yarn faults and improve product quality.

Drawings

FIG. 1 is an enlarged view of the working section of the weft insertion aid;

FIG. 2 is a structural view of a left-section rounded triangular prism;

FIG. 3 is a schematic diagram of the movement of the rounded triangular prism driven into the cloth fell, and the arrow indicates the movement direction of the rounded triangular prism;

FIG. 4 is a schematic diagram of the movement of a rounded triangular prism from a cloth fell to a fabric in a tidying manner, and an arrow indicates the movement direction of the rounded triangular prism;

FIG. 5 is a clear shed formed during weaving;

in the figure, 1, fabric; 2. a shed; 4. a connecting member; 5. a rounded triangular prism; alpha is a shuttle muzzle angle; beta is the top angle of the cross section of the cylinder; the arrow direction is the carding direction; l1, front shed; l2, rear shed; h1, -half shed height; h2, full shed height.

Detailed Description