Power-off protection control method, system and device for embroidery frame of embroidery machine

Abstract

The invention relates to a power-off protection control method for an embroidery frame of an embroidery machine, and the method specifically comprises the steps: obtaining a relative coordinate of the embroidery frame at a power-off position, and obtaining a motor shaft position of the embroidery frame at the power-off position through a motor encoder; after the embroidery machine is powered on, when the embroidery frame is positioned to the power-off position again, the following steps S1-S2 are executed; s1, controlling the tabouret to move to a rough error band of the relative coordinates, wherein the rough error band is an error range of positioning the tabouret by a sensor; and S2, according to a signal of a motor encoder, a motor shaft of the tabouret is controlled to rotate to the position of the motor shaft, so that the tabouret further moves to an accurate error belt of the relative coordinates, and the accurate error belt is smaller than and is contained in the rough error belt. According to the method, the position during power failure can be accurately found after power failure, a high-precision positioning sensor is not needed, only an encoder is added to the motor, the manufacturing cost is low, the structure is simple, and maintenance is easy.

Description

technical field [0001] The invention belongs to the technical field of textile machinery, and in particular relates to a power-off protection control method, system and device for an embroidery frame of an embroidery machine. Background technique [0002] The embroidery machine changes the position of the embroidery by moving the embroidery frame during the working process. In the middle of the work process, there may be an emergency shutdown due to power failure or safety reasons. After the machine is restored, in order to ensure that the previous embroidery work can be continued without wasting time and materials, it is necessary to return the embroidery frame to the position immediately before the shutdown to continue the embroidery work. However, when the embroidery machine is stopped, it cannot be guaranteed that the embroidery frame will not be passively displaced due to human or other factors. Dislocation of processing, destroying the entire product. [0003] Existi...

AI Technical Summary

Problems solved by technology

However, there is a millimeter-level error in the positioning ability of the sensor, and the positioning of the embroidery frame is different each time. Under the premise of positioning errors, there will be errors when the embroidery frame returns to the original point, and the embroidery position after restarting the machine is likely to be different. Deviate from the pause position before stopping