Automatic sewing machine

Abstract

The invention provides a sewing machine capable of automatic tailoring and easily setting a sewing speed suitable for tailoring. The sewing machine comprises a needle bar with needles for vertical motion; a moving mechanism for moving a sewing; a sewing machine motor; an X axis motor and a Y axis motor for driving the moving mechanism; a control device for controlling the sewing machine motor, the X axis motor and the Y axis motor which enable a spindle rotary; a main encoder for detecting a rotary angle of the spindle; an X axis position sensor and a Y axis position sensor for detecting the position of the moving mechanism; an EEPROM for storing sewing data, the spindle rotary angle and the position of the moving mechanism; a CPU for calculating the stable time of the moving mechanism and the sewing machine motor rotary speed and the moving mechanism action starting angle corresponding to the stable time based on the storage content of the EEPROM.

Description

technical field [0001] The invention relates to an automatic sewing sewing machine, which moves a sewing object horizontally relative to the vertical movement position of a sewing needle, and forms stitches of a predetermined shape on the sewing object. Background technique [0002] Conventionally, there is known an automatic sewing machine that forms stitches of a predetermined shape on the cloth while moving a holding member holding the cloth in the horizontal direction relative to the vertical movement position of the sewing needle. As one form of an automatic sewing machine, there is a moving mechanism in which motors (X-axis and Y-axis) driven in respective directions are provided for two directions (X-axis and Y-axis) perpendicular to the horizontal plane. motor, Y-axis motor). [0003] Generally, the automatic sewing machine is at the phase when the sewing needle does not penetrate the sewing object, that is, the sewing needle rises and is pulled out from the sewing ...

AI Technical Summary

Problems solved by technology

[0004] When the movement timing of the above-mentioned moving mechanism deviates, the sewing needle may not be pulled out from the sewing product before the sewing product starts to move, and the sewing needle may start to move the sewing product in a state where the sewing needle penetrates the sewing product. , so the sewing needle will be pulled by the moving sewing object, and it will fall in a bent state, so-called needle pulling occurs, so that the needle thread loop cannot be caught by the kettle, and the so-called skipped stitches sometimes occur, or the sewing needle and Sewing machine parts snap together to damage the needle point and damage the fibers of the fabric

In addition, since the sewing product is moved while the sewing needle is pierced into the sewing product, the through hole of the sewing needle relative to the sewing product is widened and marks are left, or the position of the stitches is shifted, thereby degrading the quality of the product.

Images