Roller machine, bobbin winding margin detection device and use method of bobbin winding margin detection device

Abstract

The invention relates to a roller machine, a bobbin winding margin detection device and a use method of the bobbin winding margin detection device. Because the outer surface of a spool of a bobbin isprovided with a light-reflecting detection surface, a bobbin case is provided with a detection window, the outer side of the bobbin case is provided with a probe of a sensor, after a stitch on the spool of the bobbin is going to use up to make the light-reflecting detection surface exposed, the probe of the sensor can receive light rays transmitted by the detection window from the light-reflectingdetection surface and transmit the light rays to a sensor controller through optical fiber, the sensor controller judges the stitch margin on the spool according to the intensity of the received reflected light, and when the stitch margin is less than a set threshold, the sensor controller transmits alarm information to a sewing machine controller.

Description

technical field [0001] The invention relates to a roller machine, a bobbin winding residual detecting device and a using method thereof. Background technique [0002] The roller machine is a sewing machine with a special structure, mainly used for sewing some thicker materials such as shoes or leather. When the ordinary roller machine works normally, it has one or more upper threads and a corresponding number of bottom threads. The upper thread of the roller machine is outside the machine, generally more than 3000m, the operator can observe the use of the upper thread in real time during normal sewing, and can stop sewing and replace the upper thread when the upper thread is insufficient. However, due to the particularity of the structure of the roller machine, the bobbin thread needs to be wound on the bobbin separately during sewing, and installed separately inside the machine for independent use. Under normal circumstances, a bobbin can be wound with 30m~50m of bobbin thr...

AI Technical Summary

Problems solved by technology

However, because the roller car base is equipped with parts such as the rotary hook, the structure is relatively compact and the space is very narrow, therefore, the bottom thread sensor device of the existing sewing machine cannot be applied to the roller machine to realize the bottom thread detection function of the roller machine.

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