Sewing machine

Abstract

The invention belongs to the technical field of sewing equipment and relates to a sewing machine. The sewing machine comprises a first driver and a first connection rod, the first connection rod is rotationally connected to a machine shell bottom plate, one end of the first connection rod is connected with a movable part of the first driver, the other end of the first connection rod is connected with a movable part of a second driver, the movable part of the second driver is also connected with a second connection rod, the second connection rod is driven by the first driver to rotate so that the other end of the first driver can drive the second connection rod to move to adjust to a corresponding stitch length for dense sewing, and the action of the first driver is controlled by a controller. The sewing machine can solve the problems that in the prior art, after thread cutting, thread ends are not attractive due to different lengths, and the thread ends are too long after thread cutting, and the stitch length during sewing can be adjusted through a mechanical structure. Before thread cutting, a small segment of dense sewing or variable-stitch-length sewing is conducted, so that the thread ends become short after thread cutting, the left thread ends are firmly connected and not likely to fall off after being torn, the sewing effect is improved, and attractiveness is improved.

Description

technical field [0001] The invention belongs to the technical field of sewing equipment, and relates to a sewing machine. Background technique [0002] Lockstitch sewing machine is mainly a machine that uses a sewing thread to form a stitch on the sewing material, so that one or more layers of sewing material are interlaced or sewn together. It is usually divided into two purposes: thin material and thick material. Lockstitch sewing machine can sew cotton, linen, silk, wool, rayon and other fabrics and leather, plastic, paper and other products. Thin material is generally used for knitting, underwear, shirts, Uniforms, etc. Thick materials are generally used for all kinds of sportswear, jeans, fashion, coats, shoes and hats, leather, luggage, etc. Lockstitch machines are the most basic types of sewing equipment. [0003] At present, when the sewing machine trims the thread at the end of sewing, because the stitch length cannot be adjusted, the bottom thread end of one stitc...

AI Technical Summary

Problems solved by technology

[0003] At present, when the lockstitch sewing machine trims the thread at the end of sewing, because the stitch length cannot be adjusted, the bottom thread end of a stitch length cannot form self-locking, and two thread ends, one long and one short, appear at the trimming place of the material to be sewn, and two The thread ends are one long and one short, one front and one back, resulting in the thread ends left after thread trimming are not firm, and will fall off with a slight pull, affecting the sewing effect

In addition, the thread ends are long and lack aesthetic feeling

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