There are mainly two types of stitches of embroidery machines, lock stitches and chain stitches, of which lock stitches are widely used. There are two working principles of embroidery machines, one is the needle for embroidery control operations, and the other is for feeding materials for embroidery control operations. The color change of the stitches of the computerized embroidery machine is realized by changing the needle, so there are single-needle and multi-needle computerized embroidery machines; there are single-head and multi-head computerized embroidery machines that process several identical patterns at the same time. It should be pointed out that the computerized embroidery machine should be used with the computerized embroidery pattern-making system. There are two types of embroidery machines: semi-automatic embroidery machines and automatic embroidery machines. Computerized automatic embroidery machines are widely used. The embroidery technology of embroidery machines is divided into single-sided embroidery and double-sided embroidery. Based on flat embroidery, embroidery operations such as tape embroidery, roll embroidery, and convex embroidery are carried out.

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