Types and specifications of sewing machines

A sewing machine, also known as a disc sewing machine, commonly known as a seam sewing machine, is a machine that uses sewing thread to sew sweater cuffs.
1、 Types of sewing machines
1. The most widely sold and widely used bending needle sewing machine in the market is the bending needle sewing machine. The variety and specifications of the bending needle sewing machine are cheap, the operation protection is simple, the production efficiency is high, and it is widely loved by customers;
2. It is a straight needle sewing disc machine, which is characterized by changing the traditional connecting rod structure of the previous disc sewing machine, and using cam method to drive various parts, making the whole machine less prone to deformation. The straight large needle has strong penetration and is particularly suitable for sewing thick fabrics, making it less prone to damage or breakage. The variety and specifications of the sewing machine are higher than those of curved needles;
3. It is a fully automatic sewing machine, a fully automatic sewing machine, currently supplied by Black Horse brand from South Korea and Conti company from Italy. These sewing machines are high standard and efficient sweater fast sewing machines with stable structure and low failure rate. However, the variety and specifications of the sewing machine are high, ranging from tens of thousands per unit, and have not been promoted in China;
4. It is a straight seam sewing machine, and this type of sewing machine is still good for sewing straight seams. It cannot solve the problem of upper collar, and its function is fundamentally similar to the automatic sewing machine mentioned above.
2、 Specifications of the sewing machine
The opening of the sweater is done on a sewing machine, and the machine number of the sewing machine should match the machine number of the sweater weaving machine. When selecting the machine number of the sewing machine, please refer to the table below. When stitching woolen sweaters, the horizontal sleeve wear is 2-3 rows, and the vertical sleeve wear is 1-2 stitches. When sewing woolen sweaters, a piece of 28x2tex~31x2tex worsted yarn of the same color is commonly used as the sewing thread; When sewing synthetic fiber products, garment raw materials are commonly used as stitching thread. No skewed or overlapping stitches are allowed during the opening process. This is used for shoulder closure and sleeve fitting. The elongation of shoulder seams should be greater than 110%, and the elongation of hanging shoulder seams should be greater than 130%.