13.3%和8.3%。The links mechanism of the remnant plastic film collector consists of elastic teeth and four-links mechanism. The elastic teeth fixes on links for feeding and gleaning the remnants film. In order to analyze the motion of elastic teeth and optimize its moving track, the mathematics model of the link mechanism was established in this paper. Many factors of restriction function were fuzzily disposed with fuzzy optimization principles and means. The fuzzy optimization problem was dealt with optimization gather intercept of level. Based on the known structure sizes of brace, frame and elastic teeth, optimal sizes of links and rockers, 390 mm and 385 mm, were worked out, and they are smaller 13.3% and 8.4% than before.