Buttonholing machine

Abstract

The invention provides a buttonholing machine. The buttonholing machine comprises a lower trimming mechanism used for cutting a bobbin thread and a presser foot lifting mechanism used for lifting a presser foot; the lower trimming mechanism comprises a lower trimming driving component and a lower trimming execution component which is connected with the lower trimming driving component and driven by the lower trimming driving component to act, the presser foot lifting mechanism comprises a presser foot lifting driving component and a presser foot lifting execution component which is connected with the presser foot lifting driving component and driven by the presser foot lifting driving component to act, and the lower trimming driving component and the presser foot lifting driving componentare driven by the same driving motor to act. According to the buttonholing machine, the lower trimming mechanism and the presser foot lifting mechanism can be simultaneously driven by one driving motor to act, so that the structure and electronic control of the buttonholing machine are greatly simplified and optimized, and then the manufacturing cost of the buttonholing machine can be greatly lowered.

Description

technical field [0001] The invention relates to a garment sewing device, in particular to a buttonhole machine. Background technique [0002] The buttonhole machine is a type of industrial sewing machine, which belongs to a special machine, and is mainly used to process buttonholes in various clothing. With the continuous development of technology, the buttonhole machine is also developing in the direction of semi-automation and full automation, so its functions are becoming more and more perfect. For example, the buttonhole machine can realize functions such as automatic thread trimming, automatic presser foot lifting, and automatic sewing. . For this reason, the upper thread trimming mechanism for cutting the upper thread, the lower thread trimming mechanism for cutting the bottom thread, and the presser foot lifting mechanism for lifting the presser foot are all configured in the buttonhole machine. At present, the upper thread trimming mechanism, the lower thread trimm...

AI Technical Summary

Problems solved by technology

At present, the upper thread trimming mechanism, the lower thread trimming mechanism and the presser foot lifting mechanism are respectively driven by three motors, so as to realize automatic upper thread trimming, automatic bottom thread trimming, and automatic presser foot lifting respectively. Therefore, the keyhole of this structure The mechanical structure and electric control of the machine are very complicated, the failure rate of the electric control is extremely high, and the cost is also high

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