The Mixed Cocoon Reeling Model and the Distribution of the Cocoon Number of Different Cocoon Layers in the Raw Silk Reeling with Fixed Number of Cocoons

Based on the distribution theory of the cycle-length of cocoon filament,we discussed the dynamic process of the cocoon number of thick or thin cocoon filaments in the raw silk reeling with fixed number of cocoons.By establishing difference-differential dquation of the proccess,we obtained some related results about the cocoon number distribution of different cocoon layers and the rate of proper mixed state of cocoon number of different cocoon layers.The theoretical relationship between the cocoon properties,the reeling technic of workers and the mixed state of cocoon was elucidated.Bycomputer simulation,we verified the theoretical model and discussed the related problems in the process control of raw silk reeling with fixed number of cocoons.