CN101440548A - Method for weaving modified warp-rib fabric on air-jet loom - Google Patents

Abstract

The invention relates to a method for weaving variable warp rib fabrics with an air-jet loom. The method comprises: a weft insertion system of the prior air-jet loom is additionally provided with a weft yarn detection device; during weaving, a plain weave cam opening mechanism and a four-color weft selection air-jet loom provided with an electric reeling and electric run-in warp device with changed weft density are used. The warp run-in and the reeling amount of the loom change according to a set rule. With the change of the warp run-in and the reeling amount, in each opening, different number of weft yarn is led in according to the set weft insertion order, so the loom realizes the weaving of the changed weft rib fabric. The method has the advantages that: the variable warp rib fabrics is made by a method of introducing a different number of weft yarn in each opening, so the running speed of the loom is improved, the filling insertion rate and the yield is improved, the production cost is reduced and economic benefits of a weaving company is improved.

Description

The method of weaving modified warp-rib fabric on air-jet loom

Technical field

The present invention relates to a kind of woven fabric weaving method of field of textiles, especially a kind of weaving method of the modified warp-rib fabric that on air-jet loom, carries out.

Background technology

It is efficiently weaving of high yield, high-quality, low consumption that modern weaving technology one of pursues one's goal.Air-jet loom obtains develop rapidly in recent years owing to have characteristics such as speed of a motor vehicle height, automaticity height, good product quality, has become the capital equipment that fabric is produced.

Influence in the efficient woven factor of loom many, the latitude rate of going into of loom is a principal element.Go into the latitude rate and be meant that the loom per minute introduces the weft length of shed open, it is an index of weighing loom production capacity (output).Under the certain situation of loom reed width, going into the latitude rate is directly proportional with the weft yarn radical that the loom speed of a motor vehicle and each opening are introduced, and traditional air-jet loom filling insertion way to be each opening only introduce weft yarn is gone into the latitude rate and can only be realized by improving the loom speed of a motor vehicle so improve loom.But the real-world operation speed of a motor vehicle of air-jet loom is subjected to the influence of yarn qualities and preparatory technology and equipment, and the raising of going into the latitude rate is limited.And increase each weft yarn radical of introducing shed open, and can be under the not high condition of loom speed, realize the high latitude rate of going into.Particularly technology, the technology of preparatory process can't satisfy under the condition of high speed requirements of weaving process at present yarn qualities and before knitting, increasing each weft yarn radical of introducing shed open is to realize efficiently weaving of air-jet loom, improves the effective way of air-jet weaving business economic benefit.

A few days ago, the conventional woven method of modified warp-rib fabric adopts dobby shedding mechanism to weave mostly, and each opening is introduced a weft yarn, so it is lower to go into latitude rate (output).And each opening is introduced the method weaving modified warp-rib fabric of different radical weft yarns, because the weft yarn radical that each opening is introduced〉1, therefore, loom go into the latitude rate far above the conventional woven method, help improving going into latitude rate (output), reduce production costs and improving economic benefit of enterprises of loom.

Summary of the invention

Technical problem to be solved by this invention is the method that a kind of weaving modified warp-rib fabric on air-jet loom is provided at the prior art present situation, adopt this method to make loom under the constant situation of running speed, can make loom go into the latitude rate and output significantly improves, thereby reduce production costs, improve the business economic benefit.

The present invention solves the problems of the technologies described above the technical scheme that is adopted:

According to the modified warp-rib fabric design feature, adopt plain weave cam shedding mechanism and polychrome to select latitude, have the electronic take-up that becomes filling density, the air-jet loom realization of electronic letting-off device is weaved; When weaving, the Changing Pattern of counting according to fabric homologue, opening is introduced the weft yarn of different radicals each time, and according to the difference of wefting insertion radical each time, warp-feeding mechanism is sent the warp thread of weaving Len req accordingly, spooler deflects from fell with the fabric of respective length, makes the warp run-in of each opening and the amount of batching cooperate the wefting insertion radical and changes, and is implemented on the tabby basis to prolong homologue point and the acquisition modified warp-rib fabric.

The pneumatic picking of said method has following technical process: single thread bobbin → weft yarn checkout gear → weft accumulator → main burner → weft yarn is introduced shed open, the weft insertion system that employing is made of a plurality of weft yarn bobbins, weft yarn checkout gear, a plurality of weft accumulator and a plurality of main burners etc., weft yarn of each weft yarn bobbin supply, many weft yarns with a wefting insertion are introduced same weft accumulator respectively behind the weft yarn checkout gear, each weft accumulator is to there being a main burner.

The warp run-in of each opening and the amount of batching can be determined by given formula respectively.And with the control system of the filling density value of every latitude requirements of weaving process input loom, to guarantee that in weaving process the warp run-in of loom and the amount of batching are by the rule variation of setting, and the variation of the cooperation warp run-in and the amount of batching, opening is introduced the corresponding weft yarn of different radicals by the wefting insertion order of setting each time.

The present invention compares with the conventional woven method that existing each opening is introduced a weft yarn, has the following advantages:

1, the present invention adopts each opening to introduce the method weaving variation warp rib fabric of different radical weft yarns, it is 1～4 that each opening is introduced the weft yarn radical, therefore, under the constant situation of revolving speed of knitting machine, can make loom go into the latitude rate and output significantly improves, thereby reduce production costs, improve the business economic benefit.

2, the conventional woven method of modified warp-rib fabric, adopt dobby shedding mechanism to weave mostly, the each opening of the present invention is introduced the weaving method of different radical weft yarns, adopt the plain weave cam shedding mechanism to weave, and the high speed adaptability of plain weave cam shedding mechanism is better than dobby shedding mechanism, so the present invention can improve revolving speed of knitting machine more than 20%, helps improving the output and the economic benefit of enterprises of loom.

During 3, with weaving method Woven fabric of the present invention, weft yarn radical, warp run-in and the amount of batching that each opening is introduced can artificially be set, and present be that weft yarn radical, warp run-in and the amount of batching that each opening is introduced all is the fabric of constant through heavy flat fabric essence, it is a special case of modified warp-rib fabric, therefore, use method of the present invention, can weave equally, improve through heavy flat fabric woven and go into latitude rate and output through heavy flat fabric.

Description of drawings

Fig. 1 is a pneumatic picking system schematic of the present invention.

Fig. 2 is the fabric looming draft of the embodiment of the invention.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

A kind of modified warp-rib fabric is based on plain cloth, prolongs that different tissues is counted and heavy flat fabric that the floating long line length that obtains does not wait along warp thread direction.The fabric specification of present embodiment: JC80 ^s* 80 ^s220 * 180 63 " (JC7.38 * 7.38 866.1 * 354.3 160cm), fabric tissue is

Variation is through heavily flat.

Present embodiment adopts the plain weave cam shedding mechanism and has the electronic take-up that becomes filling density, the four looks confession latitude air-jet loom weaving of electronic letting-off device.The warp run-in of loom and the amount of batching change by the rule of setting, and cooperate the variation of the warp run-in and the amount of batching, and opening is introduced the corresponding weft yarn of different radicals by the wefting insertion order of setting each time.The Changing Pattern of warp run-in, the amount of batching and the pick count of each opening is determined respectively as follows:

Warp run-in L _j:

$L_{\mathrm{jn}}=\frac{100}{P_w\×(1-a_j)}\×n$

In the formula: L _Jn---warp run-in (mm)

a _j---the comprehensive shrinkage of warp thread (%)

P _w---pick count (root/10cm)

N---each latitude is introduced the weft yarn radical (root) of shed open

The amount of batching L _Bn:

$L_{\mathrm{bn}}=\frac{100}{P_w\×(1-a_1)}\×n$

In the formula: L _Bn---the amount of batching (mm)

P _w---pick count (root/10cm)

a ₁---machine shrinkage (%) under the fabric

Warp run-in L _j:

$L_{\mathrm{jn}}=\frac{100}{P_w\×(1-a_j)}\×n$

In the formula: L _Jn---warp run-in (mm)

a _j---the comprehensive shrinkage of warp thread (%)

P _w---pick count (root/10cm)

N---each latitude is introduced the weft yarn radical (root) of shed open

The amount of batching L _Bn:

$L_{\mathrm{bn}}=\frac{100}{P_w\×(1-a_1)}\×n$

In the formula: L _Bn---the amount of batching (mm)

P _w---pick count (root/10cm)

a ₁---machine shrinkage (%) under the fabric

The pneumatic picking of Ben Fafa has following technical process: single thread bobbin → weft yarn checkout gear → weft accumulator → main burner → weft yarn is introduced shed open, the weft insertion system that employing is made of weft yarn bobbin 1, weft yarn checkout gear 2, weft accumulator 3 and main burner 4 etc., weft yarn of each weft yarn bobbin 1 supply, many weft yarns with a wefting insertion are introduced same weft accumulator 3 respectively behind weft yarn checkout gear 2,3 pairs of each weft accumulators should have a main burner 4.According to the fabric tissue of present embodiment, the weft yarn number of introducing shed open has four kinds of situations, be respectively 1,2,3 and 4, so this weft insertion system is furnished with 4 weft accumulators and 4 main burners.

Present embodiment is according to weaving method of the present invention, and it weaves looming draft as shown in Figure 2.

As seen from Figure 2, adopt each shed open to introduce the weaving method of 1～4 weft yarn, its pegging plan is a card one on the other, so available plain weave cam shedding mechanism is weaved, each opening is introduced the weft yarn of different radicals.Its weaving principle is:

At first, specification requirement according to modified warp-rib fabric, set the Changing Pattern of pick count, the changing value of filling density is determined by given formula, and with the control system of the filling density value of every latitude requirements of weaving process input loom, guaranteeing in weaving process, according to the difference of wefting insertion radical each time, warp-feeding mechanism is sent the warp thread of weaving Len req accordingly, and spooler deflects from fell with the fabric of respective length.

Secondly, with reference to the weft insertion system schematic diagram of accompanying drawing 1 and

Modified warp-rib fabric looming draft Fig. 2 wefting insertion process is:

Wefting insertion for the first time, two weft yarns that unwinding is got off from two single thread bobbins, pass through the weft yarn checkout gear respectively, be around on the same weft accumulator 3a, and introduce same main burner 4a simultaneously, when pneumatic picking, from the air-flow of main burner 4a ejection two weft yarns are introduced shed open simultaneously, finish wefting insertion one time.

Wefting insertion for the second time, four weft yarns that unwinding is got off from four single thread bobbins, pass through the weft yarn checkout gear respectively, be around on the same weft accumulator 3b, and introduce same main burner 4b simultaneously, when pneumatic picking, from the air-flow of main burner 4b ejection four weft yarns are introduced shed open simultaneously, finish wefting insertion one time.

Wefting insertion for the third time, the weft yarn that unwinding is got off from the single thread bobbin passes through the weft yarn checkout gear respectively, be around on the weft accumulator 3c, and introduce main burner 4c, when pneumatic picking, from the air-flow of main burner 4c ejection weft yarn is introduced shed open simultaneously, finish wefting insertion one time.

The 4th wefting insertion, two weft yarns that unwinding is got off from two single thread bobbins, pass through the weft yarn checkout gear respectively, be around on the same weft accumulator 3a, and introduce same main burner 4a simultaneously, when pneumatic picking, from the air-flow of main burner 4a ejection two weft yarns are introduced shed open simultaneously, finish wefting insertion one time.

The 5th wefting insertion, three weft yarns that unwinding is got off from three single thread bobbins, pass through the weft yarn checkout gear respectively, be around on the same weft accumulator 3d, and introduce same main burner 4d simultaneously, when pneumatic picking, from the air-flow of main burner 4d ejection three weft yarns are introduced shed open simultaneously, finish wefting insertion one time.

The 6th wefting insertion, the weft yarn that unwinding is got off from the single thread bobbin passes through the weft yarn checkout gear respectively, be around on the weft accumulator 3c, and introduce main burner 4c, when pneumatic picking, from the air-flow of main burner 4c ejection weft yarn is introduced shed open simultaneously, finish wefting insertion one time.

Present embodiment is finished weaving of a tissue circulation through six wefting insertion.

Claims (5)

1, a kind of method of weaving modified warp-rib fabric on air-jet loom is characterized in that: this method adopts plain weave cam shedding mechanism and the polychrome that has the electronic take-up mechanism, electronic warp feeding mechanism and the pneumatic picking system that become filling density to select the latitude air-jet loom weaving; When weaving, the Changing Pattern of counting according to fabric homologue, shed open is once introduced single or many weft yarns, and according to the difference of wefting insertion radical each time, warp-feeding mechanism is sent the warp thread of weaving Len req accordingly, spooler deflects from fell with the fabric of respective length, realizes that the warp run-in of each opening and the amount of batching cooperate the wefting insertion radical and change.

2, according to the method for right 1 described weaving modified warp-rib fabric on air-jet loom, it is characterized in that: described pneumatic picking system includes a plurality of weft yarn bobbins, weft yarn checkout gear, a plurality of weft accumulator and a plurality of main burner, weft yarn of each weft yarn bobbin supply, many weft yarns with a wefting insertion are introduced same weft accumulator respectively behind the weft yarn checkout gear, each weft accumulator is to there being a main burner.

3, according to the method for right 1 or 2 described weaving modified warp-rib fabric on air-jet loom, it is characterized in that: according to weft yarn thickness difference, the weft yarn radical that shed open once can be introduced is the 1-4 root.

4, according to the method for right 1 or 2 described weaving modified warp-rib fabric on air-jet loom, it is characterized in that: the warp run-in of the each opening of described loom and the amount of batching draw respectively as follows:

Warp run-in L _j:

$L_{\mathrm{jn}}=\frac{100}{P_w\×(1-a_j)}\×n$

In the formula: L _Jn---warp run-in (mm)

a _j---the comprehensive shrinkage of warp thread (%)

P _w---pick count (root/10cm)

N---each latitude is introduced the weft yarn radical (root) of shed open

The amount of batching L _Bn:

$L_{b_n}=\frac{100}{P_w\×(1-a_1)}\×n$

In the formula: L _Bn---the amount of batching (mm)

P _w---pick count (root/10cm)

a ₁---machine shrinkage (%) under the fabric

N---each latitude is introduced the weft yarn radical (root) of shed open

5, according to the method for right 4 described weaving modified warp-rib fabric on air-jet loom, it is characterized in that: described pick count draws as follows:

$P_{\mathrm{Wn}}=\frac{100}{L_{\mathrm{bn}}}=\frac{P_W\×(1-a_1)}{n}$

In the formula: L _Bn---the amount of batching (mm)

P _w---pick count (root/10cm)

α ₁---machine shrinkage (%) under the fabric

N---each latitude is introduced the weft yarn radical (root) of shed open

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