Bead edge stitch sewing machine

Abstract

The invention discloses a bead edge stitch sewing machine which comprises a head and a bottom plate. The head is arranged on the bottom plate; a cloth pricking mechanism is arranged in the head; the cloth pricking mechanism is connected with an upper shaft; the power drive of the upper shaft is implemented by a belt pulley; the upper shaft drives a lower shaft by two pairs of bevel gears and a vertical shaft; the lower shaft is connected with a thread expansion ring mechanism capable of ensuring stitches to be reliably formed; the thread expansion ring mechanism is arranged below the bottom plate; the lower shaft is fixedly connected with a thread shifting cam; the phase relation of the thread shifting cam and a sewing needle can be regulated; the thread shifting cam is connected with a thread shifting shaft by a thread shifting crank; the thread shifting shaft is connected with a thread shifting plate; the lower shaft is fixedly connected with a thread pushing cam; the phase relation of the thread pushing cam and the thread shifting cam can be regulated; the thread pushing cam is fixedly connected with a sliding block shaft by a thread pushing crank; a sliding block is movably arranged on the sliding block shaft; the sliding block can rotate relative to the sliding block shaft; the sliding block is in sliding fit with a groove part of a thread pushing rod; and the thread pushing rod is connected with a thread pushing plate. According to the invention, the perfect sewing effect can be achieved.

Description

Technical field [0001] The invention relates to a sewing machine, in particular to a bead stitch sewing machine. Background technique [0002] With the continuous development of society and economy, people pay more and more attention to their own clothing, not only requiring strong and durable clothing, but also increasingly pursuing the color and style of clothing. Bead sewing machine is a kind of double-needle single-thread decorative sewing machine that has emerged to meet people's wearing needs. The bead stitch is a single-thread chain stitch, and its stitch is characterized by a series of dripping water drops on the front of the sewing material, and a hand-stitched stitch on the back. [0003] The bead edge sewing machine includes a machine head and a bottom plate. The machine head is arranged on the bottom plate and an oil tank is arranged under the bottom plate. The head and bottom plate are processed and assembled by casting. [0004] The machine head is equipped with a pi...

AI Technical Summary

Problems solved by technology

[0006] In the existing bead edge sewing machine, when the thread push plate swings around the thread push plate shaft to push the thread, it will touch the sewing needle and the crochet needle, causing friction. When sewing at high speed, it is easy to skip stitches, which seriously affects the sewing performance

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