Abstract:

As the bottoms of some spinnerets are spherical and they would become bulge if some blocked microholes bear overpressure frequently, then the CCD can not get clear image of the microholes on the spinneret, so the machine can not detect the microholes correctly. To solve the incorrect phenomenon and the low efficiency of atuo-focusing to every hole, the paper puts forward an auto-focusing method based on machine vision, the machine focuses on the microholes when the lens moves to the next circle or the detected diameter value bigger than the standard one, so that the machine can automatically detect microholes with high accuracy and enhance the efficiency of detection.