Cloth automatic edge aligning device of sewing machine

Abstract

The invention relates to a cloth automatic edge aligning device of a sewing machine. The cloth automatic edge aligning device comprises a detecting mechanism and a regulating mechanism, wherein the detecting mechanism comprises a sensor assembly, a support frame of the sensing assembly is in an E shape and is arranged in a Y direction, three groups of sensors parting vertical arrangement are arranged on a PCB (printed circuit board) arranged at the middle layer, each sensor is a correlation type multipoint sensor, the pair of the upper and lower sensors arranged at the outer side of an E-shaped notch are primary positioning sensors, the two pairs of the upper and lower sensors arranged at the inner side of the E-shaped notch are precise positioning sensors, and the regulating mechanism is divided into an upper layer regulating mechanism and a lower layer regulating mechanism which are respectively used for regulating upper layer cloth and lower layer cloth. The cloth automatic edge aligning device of the sewing machine has the advantages that the edge aligning detection precision is high, the regulation precision is high, the structural design of the sensor assemblies is ingenious, the upper and lower layer cloth detecting efficiency is high, the edge aligning regulation resistance is small, the edge aligning regulating cloth contact area is large, the primary positioning sensors achieve the cloth pre-judgment effect, the cloth edge pressing incapability due to cloth monitoring incapability cannot occur even when the radian of a cloth piece is smaller, and the sewing quality is improved.

Description

technical field [0001] The invention relates to an automatic edge-aligning device for sewing machine cloth, which belongs to the technical field of industrial sewing machines. Background technique [0002] At present, the automatic edge alignment mechanism of sewing machines on the market is that the edge adjustment wheel is pressed on the fabric. Through the reflective photoelectric sensor, the motor drives the positive and negative rotation of the edge adjustment wheel, so that the fabric moves back and forth in the direction of the edge adjustment, thus Realize the function of automatic edge alignment; the detection of the edge position adopts the reflective single-point sensor to detect the edge position. [0003] Since the adjusting wheel directly presses on the fabric, it is equivalent to a single point of contact. When the curvature of the fabric is small, it will not be able to press the edge of the fabric, resulting in the inability to align the edge and affecting t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing sewing machine cloth automatic edge-aligning device, the reflective single-point sensor, the detection accuracy is insufficient, and because the adjustment wheel is directly pressed on the cloth, which is equivalent to a single-point contact, when the cloth radian If it is too small, the edge of the selvage will not be pressed, resulting in the inability to align the edge, which will affect the quality of fabric sewing

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