针对耙齿式残膜回收机脱膜难、效率低的问题,运用Box-Behnken的中心组合试验方法对残膜回收机脱膜机构的工作参数进行了试验研究,以刮板角度、刮板安装位置、刮板长度为影响因素,以初次脱膜率、缠膜率为试验指标进行3因素3水平的响应面试验;建立了响应面数学模型,分析了各影响因素对作业质量的影响,同时对影响因素进行了综合优化.试验结果表明:初次脱膜率影响显著顺序依次为刮板角度、刮板安装位置、刮板长度;缠膜率影响显著顺序依次为刮板角度、刮板长度、刮板安装位置;最优工作参数组合为刮板角度为70°、刮板安装位置为95mm、刮板长度为480mm,对应的初次脱膜率和缠膜率为94.7%、1.29%,且各性能指标和理论优化值相对误差均小于5%.研究结果可为耙齿式残膜回收机脱膜机构的结构完善和作业参数优化提供依据.%In order to improve the work quality of the film stripping mechanism of the rake teeth type residual film recovery machine, increase film stripping mechanism in initial film removal rate and reduce in wrap film rate, this paper using Box-Behnken central composite test method of parameters by the film stripping mechanism of residual film recovery machine of test research, to scraper angle, scraper installation position, the length of the scraper factors, so as to initial film removal rate and wrap film rate for index test of three factors and three levels of response surface experiments.The mathematical model of response surface was established, and analyzing the influence factors on the quality of work, and optimizing the influence factors.Test results show that the significant sequence of initial film removal rate of followed by scraper angle, scraper installation position, the length of the scraper;significant sequence of wrap film rate followed by angle of scraper, length of scraper and installation position of scraper;the optimal parameter combination for the scraper angle is 70 degrees, the scraper installation position is 95mm, the scraper length is 480mm, corresponding to the initial film removal rate is 94.7%, the film wrapping rate is 1.29% ,the performance and theory optimization values of relative error was less than 5%.The results can be used for the film receiving mechanism of tooth type residual film stripping machine perfect design and provide a basis for optimization of operating parameters.
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