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Comprehensive application of traditional technology intarsia on computerized knitting machines

Views: 1     Author: Site Editor     Publish Time: 2022-08-29      Origin: Site

1. Intarsia

The intarsia technology of computerized knitting machines refers to the knitting two or more pieces of different colors or types of yarns in the longitudinal direction to form a patterned fabric when forming a tissue. It is a new technology combining needle selection and yarn exchange, which is different from jacquard technology.

During jacquard knitting, some knitting needles selected in each course can move along the triangular track to hook up the colored yarn brought in by the machine head. Unselected needles do not participate in knitting, and the yarn floats. The reverse side of the fabric until the selected needle is knitted. During intarsia knitting, when the machine head drives another colored yarn to knit, the knitting needles that have knitted one colored yarn are not knitted, and the rest of the knitting needles are knitted.

In this way, each course consists of several stitches, and several colors of yarn cover the fabric's reverse side. In a double-sided weave, even if the yarn is not looped on the front, it will be looped on the reverse.

The application of intarsia technology can not only form patterns with different yarns like jacquard technology, but unlike jacquard knitting, the same yarn skips the unselected knitting needles to form floating lines or threads on the reverse side of the fabric. The sesame point effect is formed on the reverse side of the double-sided jacquard fabric, so it is called the no-dot jacquard technology.

The weave of the intarsia part can be single-sided plain stitch, tuck, etc., or double-sided weave such as a rib.

computerized knitting machines

2. Characteristics of intarsia fabrics

(1) The intarsia fabric has a unique pattern, clear pattern, pure color, and no overlapping of colored yarns on the back of the fabric, so it is more comfortable and gives a clear and elegant feeling

(2) There is no dotted line on the reverse side of the intarsia fabric, so the longitudinal and transverse elasticity of the fabric is not affected, and the fabric can not add extra weight so that the fabric performance is good.

3. The weaving principle of intarsia fabric Compared with jacquard

the formation process of intarsia weaves requires more weaving techniques. A prerequisite for forming intarsia fabrics is that the machine needs to have the ability to change the direction of a course formation so that for circular knitting machines to weave intarsia fabrics, it must have the function of knitting in both forward and reverse directions.

Weaving intarsia fabrics on flat and corten machines is a unique advantage. The main reason for the latter to form intarsia fabrics is: that during the weaving process, the movement range of the yarn guide is changed. That is, the yarn guide of each yarn can only lay yarn in its color area and after the yarn laying in the area is over. Leave the yarn feeder until the next flat knitting machine head returns to drive the weaving. At the edge of the following color area, another thread guide continues to weave the course.

4. Flat knitting intarsia and its weaving process

Manual intarsia flat knitting machine: Due to the advantages of intarsia fabrics, intarsia knitting functions are currently added to manual flat knitting machines. Its triangle adjustment and needle latch working state are utterly different from ordinary flat knitting machines. The multi-purpose manual intarsia flat knitting machine has only one needle bed 9 located at the rear needle bed of the ordinary flat knitting machine. High and low latch needles can be used.

Computerized knitting machines control intarsia flat knitting machines.

The flat knitting machine for computer-controlled intarsia can be a particular flat knitting machine for computer intarsia or a general computer jacquard flat knitting machine. Generally, computer-controlled flat knitting machines have the function of single-needle selection. If the principle of controlling the displacement of the yarn guide is adopted, intarsia fabrics with various patterns can be knitted efficiently.

5. Knitting principle of intarsia fabric on general computerized knitting machines

Since each course is woven with carrier pads corresponding to the color blocks, intarsia requires a particular device. The traditional V-type intarsia flat knitting machine needs to be equipped with a complex yarn guide positioning system, which will be moved to a new position after every few courses knitted, which requires stopping at the edge of the color block that changes according to the pattern and Rearranges the yarn guides.

The new computerized knitting machines are controlled by computer signals to control the dowels of the yarn guides, which can drive or put down each yarn guide at any place in the knitting width, without the need for special positioning blocks to knit intarsia products. Still, to more effectively knit and compare For complex intarsia weave, most computerized knitting machines also need to be equipped with a unique intarsia yarn guide, which can not only accurately lay the yarn on the selected knitting needle but also control the direction of the yarn guide. Swing left and right to quit work.

In intarsia knitting, when a specific yarn guide finishes knitting a particular color area, not raise the knitting needle of the following color area and hook the yarn of this yarn guide. This yarn guide can be used—the actuator swings at an angle as the program requires. When the machine head moves from left to right, the yarn guide swings to the left; otherwise, the yarn guide swings to the right; the middle position is the position that participates in weaving.

(1) Bottoming technology

In recent years, users of computerized knitting machines have embraced references to the technology. The bottoming technique is to give the fabric tension before knitting preparation so that the bottoming of the garment piece can be quickly and save yarn, and it can also be knitted individually.

(2) The function of starting the bottom plate

Although the sinker function on the computerized knitting machines can play the function of pressing down the coil, the machine consumes a certain amount of yarn to make the tension of the cloth uniform during the process from the start of knitting to the action of the pulling device on the cloth. Only then can we start ordinary weaving, which wastes time and yarn, and the woven fabrics are connected, which is inconvenient for sewing and post-processing, and there is no need to weave yarn.

(3) The working principle of the bottom plate

The lifting bottom plate is a plate parallel to the mouth of the needle bed, and there are soft needles similar to groove needles on the plate. When the lifting bottom plate rises, the machine first knits a double rib of 3+3 turns (the thick needle size is 1 +1 killing rib, this turn is woven with elastic yarn, the density is high, and there is enough space to pull down when the bottom plate is lowered), when the bottom plate rises, the bottom needle is inserted into the intersection of the 3+3 rib so that the crossed thread of the rib enters the needle hook of the bottom needle. The bottom plate passes through the mechanism, and the needle tube is raised so that the needle mouth is closed. The hook yarn is lowered to the bottom of the mouth of the needle bed, then the yarn knitting and The yarn feeder are brought into the weaving, and the cloth weaving can be carried out after the above steps are completed.

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