Sewing material detecting device and automatic presser foot height adjusting system for sewing machine

Abstract

The invention provides a sewing material detecting device for a sewing machine. The sewing machine comprises a machine head and a table plate. The sewing material detecting device for the sewing machine is characterized in that the sewing material detecting device comprises a mounting plate, a circuit board and a sewing material thickness detector, the mounting plate is fixed to the machine head, the circuit board and the sewing material thickness detector are fixed on the mounting plate, the circuit board comprises a micro-control unit, the sewing material thickness detector exactly faces the table plate, and the sewing material thickness detector is connected with the micro-control unit through the circuit board. The sewing material detecting device for the sewing machine is mounted on the machine head of the sewing machine, the thickness of sewing materials to be sewn on the table plate of the sewing machine can be accurately detected through the sewing material thickness detector and the micro-control unit, the lifting height of presser feet is adjusted accurately according to the detected thickness of the sewing materials, a strong basis is provided for the adjustment of the lifting height of the presser feet, and accurate full automatic control over the sewing machine can be ensured.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a sewing material detection device and a presser foot height automatic adjustment system for the sewing machine. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. The sewing machine can sew fabrics such as cotton, hemp, silk, wool, and artificial fibers, and products such as leather, plastic, and paper. convenience. At present, sewing machines are mainly divided into two categories: household sewing machines and industrial sewing machines. Among them, industrial sewing machines include lockstitch sewing machines, chain sewing machines, overlock sewing machines and interlock sewing machines. A sewing machine generally consists of a machine head, a machine base, a transmission mechanism and a control mechanism. The machine head is an imp...

AI Technical Summary

Problems solved by technology

[0007] 3. If the sewing material to be sewed is thick and the sewing speed is fast, there may be phenomena such as broken needles and unsightly stitches. Therefore, it is also necessary to control the sewing speed of the sewing machine by controlling the frequency of the artificial foot stepping on the dynamic pressure plate. This method greatly reduces the sewing efficiency, and has higher technical requirements for sewing workers

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