CN107574561B

CN107574561B - Technological weaving method of rough warp knitted fabric

Info

Publication number: CN107574561B
Application number: CN201710703263.2A
Authority: CN
Inventors: 邓中民; 袁慧文; 黄嘉俊; 柯薇; 刘恋; 陈濡泽; 叶美月
Original assignee: Wuhan Textile University
Current assignee: Wuhan Textile University
Priority date: 2017-08-16
Filing date: 2017-08-16
Publication date: 2020-06-26
Anticipated expiration: 2037-08-16
Also published as: CN107574561A

Abstract

The invention belongs to the technical field of warp knitting, and particularly relates to a technological knitting method of a rough warp knitted fabric. The method adopts a single-needle bed sheet jacquard warp knitting machine, and tongue needles on a machine table of the warp knitting machine are arranged at intervals; the jacquard guide bar and the bottom bars of the warp knitting machine draw respective warps to run, and jacquard yarns entering the latch needles for knitting can be changed into thicker yarns; on the basis of the existing jacquard knitting principle, the knitting principle of jacquard is changed by reasonably changing a latch needle, and the woven warp knitted fabric has the advantages of low density, uneven surface, non-fineness and unevenness, and finally rough warp knitted fabric is obtained.

Description

Technological weaving method of rough warp knitted fabric

Technical Field

The invention belongs to the technical field of warp knitting, and particularly relates to a technological knitting method of a rough warp knitted fabric.

Background

The concept of modern people on sports shoes is continuously updated and changed along with the rapid development of economy, people not only meet the visual beauty, but also pay more attention to the style of fabrics, pursue to return to simplicity and reality, and achieve a harmonious self-image beauty through comfort, randomness and individuation of wearing. The rough fabric has the characteristics of rough hand feeling and the like by means of uneven yarn thickness and uneven cloth cover, and is in line with trend.

In the past, in the Sundajie weaving factory, knitting needles are drawn out one by one on a weft knitting single-side circular knitting machine (24 needles/25.4 mm), namely the knitting needles actually participating in the work are 12 needles/25.4 mm, meanwhile, various machine-operating parameters such as triangular arrangement, a yarn-threading mode, yarn-feeding tension and the like and fabric tissue design are correspondingly adjusted and designed, and finally rough weft-knitted fabrics are knitted on a common circular knitting machine. Nowadays, rough fabrics are mainly formed by weft knitting and tatting knitting, and have low production efficiency and high cost. Warp knitted fabrics generally show the characteristics of fineness, stable texture and the like, and meanwhile, the production efficiency of the warp knitting technology is high. Weft knitting products are low in production efficiency and high in cost, and most enterprises can select warp knitting fabrics with high use efficiency and low cost.

Raschel machines with jacquard devices we call jaka raschel machines. Typically 3 to 8 guide bars are provided, wherein 1 or 2 is used for the jacquard guide bars. It uses the deflection of jacquard guide needle to form pattern. Jacquard is the most effective method of forming patterns in warp knitting processes. There has been a constant development since the advent of the jacquard warp knitting machine in 1884, from mechanical to electronic, corded to cordless.

Jacquard warp knitting machine classification and application thereof

Jacquard warp knitting machines have developed rapidly in the last decade, from mechanical jacquard devices to electromagnetically controlled jacquard devices and from electromagnetic to the present piezoelectric, i.e. Piezo jacquard systems. The successful development of Piezo jacquard has enabled the speed of the machine to be increased by 50%, up to 1300rpm and the jacquard principle to be further developed. According to the jacquard principle, the jacquard weaving machine can be divided into a loop type, a weft insertion type, a yarn pressing type and a floating pattern type.

a. Looping jacquard warp knitting machine

The looping type jacquard warp knitting machine is also called Raschelttronic, and mainly comprises two models of RSJ4/1 and RSJ5/1 which replace a KSJ3/1 tricot warp knitting machine tricottonic, and the looping type jacquard warp knitting machine has wide application in women underwear, swimwear and beach clothes.

b. Weft insertion jacquard raschel warp knitting machine

Weft insertion jacquard warp knitting machines have earlier RJ4/1 warp knitting machines. Jacquard warp knitting machines of this type are now generally no longer used alone. The weft-insertion jacquard principle is also applied in MRPJ25/1, MRPJ43/1, MRPJ73/1, MRPJF59/1/24 multi-bar warp knitting machines and RDPJ6/2 double-needle-bed jacquard warp knitting machines. In addition, the jacquard comb at the back of the floating pattern jacquard warp knitting machine also adopts the weft insertion principle, and the weft insertion jacquard comb in the jacquard machines is generally used for forming the pattern base fabric.

c. Yarn pressing type jacquard raschel warp knitting machine

This class of machines is typically RJPC 4F-NE. The old machine types comprise RJG5F-NE, RJG 5/2F-NE-and RJSC 4F-NE. The pattern produced by the machine has a three-dimensional effect and is mainly used for producing curtains and tablecloths.

d. Emboss type jacquard raschel warp knitting machine

This type of jacquard machine is also called crime swatter nylon, and the Cliptronic warp knitting machines mainly include RJWB3/2F, RJWB 4/2F, RJWB 8/2F (6/2F) and RJWBS 4/2F (5/1F). Its successful development makes the jacquard principle have further development, now it can control not only the transverse deviation of jacquard needle, but also the longitudinal direction of jacquard yarn to make it implement independent float effect. And this class of machines, which used single mesh curtains, tablecloths and the like from the past, has now successfully penetrated into the lace field and is used in the production of women's underwear, tights and outerwear fabrics.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a technological weaving method of a wild warp-knitted fabric.

The technical scheme provided by the invention is as follows:

a technological weaving method of a wild-type warp-knitted fabric comprises the following steps:

1) carrying out warp knitting by adopting a single-needle single-jacquard latch needle warp knitting machine, and configuring latch needles of the single-needle-bed single-jacquard latch needle warp knitting machine in a one-to-one mounting mode;

2) taking two warps as a unit warp, and drawing each unit warp into a corresponding latch needle by a jacquard guide bar for weaving.

Specifically, the single-needle bed sheet jacquard latch needle warp knitting machine used in the technical scheme can be Raschel cluster nylon with the model number of RSJ 4/1.

Specifically, a jacquard guide bar and a bottom bar of the single-needle single-jacquard tongue needle warp knitting machine draw respective warps to run.

Specifically, the diameter of the warp yarn drawn by the jacquard guide bar is larger than or equal to the diameter of the warp yarn commonly used by single-needle bed sheet jacquard tongue needle warp knitting machines.

Furthermore, the diameter of the warp drawn by the bottom comb is larger than or equal to that of the warp commonly used by the single-needle bed sheet jacquard tongue needle warp knitting machine.

Furthermore, the number of the single-needle bed sheet jacquard latch needle warp knitting machine is reduced by half. The number of the warp knitting machine is expressed by the number of needles per unit length of the needle bed. The number of the machine is halved, namely the number of the needles is halved, and the needles are arranged at intervals corresponding to the latch needles.

The process knitting method of the rough warp knitting fabric adopts a single-needle bed sheet jacquard warp knitting machine, and latch needles on a machine table of the warp knitting machine are installed at intervals; the jacquard guide bar and the bottom bars of the warp knitting machine draw respective warps to run, and jacquard yarns entering the latch needles for knitting can be changed into thicker yarns; on the basis of the existing jacquard weaving principle, the weaving principle of the jacquard is changed by reasonably changing the latch needle, and the woven warp knitted fabric has the advantages of low density, uneven surface, non-fineness and unevenness, and finally rough shape.

Drawings

FIG. 1 is a schematic diagram of a conventional latch needle weaving process.

FIG. 2 is a schematic diagram of the new latch needle weaving.

Fig. 3 is a schematic diagram of a conventional new three-wire set.

Fig. 4 is a schematic diagram of a new three-needle knitting.

Fig. 5 is a comparison diagram of the conventional new three-needle knitting principle and the new three-needle knitting principle.

In the figure, 1, pan head, 2, warp, 3, JK1.1 yarn guide needle, 4, JK1.2 yarn guide needle, 5, latch needle, 6, projection of 1 yarn guide needle, 7, threading and yarn aligning, 8 and yarn laying number.

Detailed Description

The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.

Referring to fig. 1, a traditional latch needle weaving schematic diagram includes a pan head 1, the pan head 1 is in an H shape, warps 2 uniformly surround the pan head 1, the warps 2 respectively pass through a JK1.1 yarn guide needle 3 and a JK1.2 yarn guide needle 4 at intervals, and one warp 2 enters a latch needle 5 for weaving.

Referring to fig. 2, a new latch needle is schematically woven, warps 2 are uniformly wound on a pan head 1, the warps 2 respectively penetrate through a JK1.1 yarn guide needle 3 and a JK1.2 yarn guide needle 4 at intervals, and two warps 2 penetrating through the JK1.1 yarn guide needle 3 and the JK1.2 yarn guide needle 4 enter the same latch needle 5 for weaving.

Referring to fig. 3, 16 states occur by the deflection of the signal before and after the needle on the basis of the cam of 0-1/2-1// and a warp thread 2 passes over the projection 6 of a thread guide, i.e. loops on the corresponding latch needle 5. In fig. 3(d), the warp thread 2 simultaneously passes over the projection of two guide needles, which is called a heavy warp, and in fig. 3(g), the floating line indicates that the warp thread 2 does not pass over the projection of any guide needle.

Referring to fig. 4, the latch needles are installed one by one so that the cams are 0-2/4-2//, wherein the deeper stitch laying trajectory is 16 knitting principles of the theoretical new three needles, and the shallower stitch laying trajectory is 16 knitting principles of the actual new three needles after the latch needles are installed one by one. In fig. 4(d), the warp threads 2 are looped over the projections 6 of the two yarn guide needles in odd courses, but only over one latch needle 5 due to the alternate mounting of the latch needles, and the warp threads 2 are looped over the projections 6 of the three yarn guide needles in even courses, but only over two latch needles 5 due to the alternate mounting of the latch needles.

Referring to fig. 5, a conventional new three-needle and new three-needle knitting principle comparison diagram of JK1.1 is shown, wherein 7 represents a threading and yarn-pairing mode, "1" represents threading, "■" represents empty threading, fig. 5(a) is a diagram of a green stitch yarn running of the conventional new three needles when the cam is 0-1/2-1// showing a thin stitch fabric effect, fig. 5(b) is a diagram of a red stitch yarn running of the conventional new three needles when the cam is 0-1/2-1// showing a thick stitch fabric effect, fig. 5(c) is a diagram of a red stitch yarn running of the conventional new three needles when the cam is 0-1/3-1// showing a thick stitch fabric effect, fig. 5(c) is a diagram of a heavy warp yarn running of the conventional new three needles when the cam is 0-1/2-1// when the cam is 0-1/3-1// showing a thick stitch fabric effect, the pad yarn running number is 0-1/3-1/////(c) showing a diagram of a thick stitch yarn running since the cam is installed at a spacing of one needle spacing between the needle, a needle is increased by a distance of a three needle needles after the cam is a needle crossing over a needle, a needle stitch yarn running of a needle, a needle stitch yarn, a needle is a needle crossing a needle of a needle stitch yarn running of a needle stitch yarn running of a needle, a needle stitch yarn, a needle is a needle of a needle stitch yarn running of a needle stitch yarn, a needle of a needle stitch yarn, a needle of a needle stitch yarn, a needle of a needle stitch yarn running of a needle is a needle, a needle stitch yarn of a needle, a needle stitch yarn running of a needle stitch yarn of a needle stitch yarn running of a needle stitch yarn of a needle, a needle of a needle is a needle of a needle, a needle of a.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A technological weaving method of a wild-type warp-knitted fabric is characterized by comprising the following steps:

2) two warp yarns are taken as a unit warp yarn, each guide needle penetrates one warp yarn, and a jacquard guide bar pulls each unit warp yarn to enter a corresponding latch needle for weaving.

2. The process weaving method of rough warp knit according to claim 1, characterized in that: the jacquard guide bar and the bottom bar of the single-needle bed sheet jacquard tongue needle warp knitting machine draw respective warp yarns to run.

3. The process weaving method of rough warp knit according to claim 1, characterized in that: the diameter of the warp yarn drawn by the jacquard guide bar is larger than or equal to the diameter of the warp yarn commonly used by the single-needle single-jacquard tongue needle warp knitting machine.

4. The process weaving method of rough warp knit according to claim 3, characterized in that: the diameter of the warp yarn drawn by the bottom comb is larger than or equal to that of the warp yarn commonly used by the single-needle bed sheet jacquard tongue needle warp knitting machine.

5. The process weaving method of rough warp knit according to claim 1, characterized in that: the number of the single-needle bed sheet jacquard latch needle warp knitting machine is reduced by half.