Sewing machines appear in our lives very soon, greatly facilitating people's daily life.
It even became an indispensable dowry in the 1980s. With the development of time and technological progress, the current sewing machine has made great progress, whether it is an industrial sewing machine or a household sewing machine. Now let's explain its basic knowledge.
The meaning of the sewing machine: The sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or stitched together. The sewing machine can sew cotton, linen, silk, wool, man-made fibers and other fabrics and leather, plastic, paper and other products. The stitches sewn are neat and beautiful, flat and firm, and the sewing speed is fast and easy to use. Classification of sewing machines: Sewing machines are mainly divided into industrial sewing machines and household sewing machines. Most of the industrial sewing machines belong to general-purpose sewing machines, including lockstitch sewing machines, chain sewing machines, overlock sewing machines and interlock sewing machines, etc. The usage rate is the highest; in the initial stage, they were basically single-needle, hand-operated sewing machines. Later, electric-driven sewing machines were invented, which have always become the mainstream in the market. Divided according to its mechanism and stitch form, it can be roughly classified into JA type, JB type, JG type, JH type. The picture below shows a type of household sewing machine-JG household electronic multifunctional sewing machine.
Distinguish by stitch and purpose. The stitches of the sewing machine can be classified into lock stitches and chain stitches. Representatives of domestic industrial machines: Zhongjie ZJ0318.
The composition of the sewing machine: General sewing machines are composed of four parts: head, base, transmission and accessories. The accessories of the sewing machine include needles, bobbins, knives, oil cans, etc.
Precautions for the sewing machine:
To ensure the cleanliness of the parts: through careful cleaning and washing, to ensure that the parts of the sewing machine are clean is the basis for ensuring the quality of the assembly and extending the service life of the sewing machine. Operate according to the procedure: If the assembly does not meet the specified technical requirements, the sewing machine will not work normally. The incorrect mutual position between parts and mechanisms also affects the working performance of the sewing machine.
Daily maintenance of the sewing machine:
1. Clean up the sewing machine and keep the overall clean.
2. Regularly add lubricating oil to keep the internal parts lubricated
Oiling parts:
(1) Each oil hole on the machine head, lubricate the upper shaft and the parts connected to the upper shaft.
(2) The components inside the panel and the movable parts connected to each component.
(3) Lubricate the presser foot bar, the needle bar and the parts connected to it.
(4) Wipe the movable parts of the lower part of the machine board and add less oil.
(5) The refueling amount of each refueling hole and refueling part need not be too much, just one or two drops will do.
