Classification of hosiery machines Hosiery machines can be classified according to the type of needle bed, the type of knitting needle and the number of needle cylinders (beds). The flat hosiery machine has a higher machine size, and produces flat-width hosiery pieces that change the width of each section according to the shape of the feet and legs. The round hosiery machine has a wide range of machine sizes. The production of tubular hosiery blanks is adapted to the shape of the foot by changing the loop size of each section, or using elastic yarn, or knitting and forming the toe and heel. The toe of the tubular stocking blank is closed to form a seamless stocking.
The production efficiency of flat hosiery machines was low, and round hosiery machines were widely used later. Hosiery machine structure The circular hosiery machine is mainly composed of yarn feeding mechanism, knitting mechanism, needle selection mechanism, control mechanism, transmission mechanism, density adjustment mechanism and pulling mechanism. Some hosiery machines also have opening and folding mechanisms. The flat hosiery machine still has a transfer mechanism.
The function of the yarn feeding mechanism is to draw the yarn from the bobbin into the knitting area. There are two types of negative and positive. Negative yarn feeding is the use of tension to draw the yarn from the bobbin. Although there are tensioners and tension compensation devices to control the tension and the amount of delivery, the difference in yarn tension is still large. Active yarn feeding uses a special device to feed the yarn into the knitting area at a constant linear speed, and the difference in yarn tension is small.
The function of the knitting mechanism is to pass the yarn through the loop forming machine to knit into a tubular sock blank or a flat-width sock. The knitting parts of the circular hosiery machine include knitting needles, sinkers, yarn guides and cams. Flat hosiery machines have knitting needles, yarn bending pieces, yarn splitting pieces, looping pieces, yarn guides and pressing pieces.
The knitting needles of the circular hosiery machine are arranged on the needle cylinder, and the yarn guide is fixed around the needle cylinder to feed the yarn into the knitting area. Several incoming lines are called a few lines, generally there are 1-12 lines, the more the lines, the higher the productivity. When the needle cylinder rotates, the latch needle moves up and down under the action of the triangle, and is knitted by the yarn guide. When knitting the heel and toe of the sock, the needle picker and the needle presser are used to narrow and open the knitting needles participating in the knitting to form a bag shape. The knitting needles of the flat hosiery machine are fixed in a row on the needle bed and move with the needle bed. The yarn guide moves along the needle bed to lay the yarn, and at the same time, weave through the cooperation of the yarn bending piece, the yarn dividing piece and the looping piece.
The function of the control mechanism is to control the entry or exit of relevant parts during the process of knitting a sock, and to control the needle cylinder, the speed and direction of rotation, and the length of the sock. The function of the transmission mechanism is to make each mechanism move according to a predetermined law. The needle cylinder of the circular hosiery machine not only rotates in one direction, but also rotates in two directions when knitting the heel and toe. The function of the needle selection mechanism is to arrange the pre-designed patterns in the needle selection device in sequence according to the requirements, and to make the knitting needles knit according to a certain procedure by transferring the parts. The function of the density adjustment mechanism is to adjust the density of each section when knitting socks. This is done by changing the relative position of the knitting needle and the sinker to adjust the bending depth. The function of the pulling mechanism is to draw the formed loops from the knitting area by means of heavy hammers, rollers, airflow, etc. during the weaving process.
The function of the opening and folding mechanism is to start the sock when there is no loop in the sock, and fold when the sock is knitted to a certain length, and fold the single-layer sock into double layers, so that the sock has a good It is elastic and does not produce curling. It is usually finished with sock hooks. The main function of the transfer mechanism is to use the transfer mechanism to move the loop from one needle to the other to change the knitting width of the sock and make it shape.
