Study On Friction Moment Of Rewinding Shaft For Slitter Machine

The action of the rewinding shaft for slitter machine is to wind the multi-reel materials on one shaft; rewinding quality is determined by moment degree and coherence of the rewinding shaft. The thesis studies on the output moment that affects the rewinding shaft and combines the theory with practice to confirm the ideal values of the input pressure and output moment in order to provide the scientific basis for the slitter design and application, therefore it has a certain theoretic and practical value.The main study for the subject:(1) In the light of parameters of the slitting materials, web width, minimum slitting width and reel diameter, we got the output moment range and accuracy requirement for each slip-ring in order to provide the basis for confirming the parameters of the slip-shaft.(2) Analyzing the basic requirement of slip-shaft ballonet, comparing strain- strength, elongation rate, shock absorption and friction coefficient for various rubbers, we confirmed the best material for slip-shaft ballonet. We also did the experiments to check the relationship between input and output pressures for different ballonets in order to confirm the best parameter.(3) Studying the relationship among slip-ring material and its surface roughness, and friction moment, we have confirmed the slip-ring material by analytical method. We also did the qualitative analysis and experiment test for slip-ring roughness and friction moment in order to confirm the suitable roughness for the slip-ring material for making it the optimal state.(4) We confirmed the species for the slip-key material by theoretic analysis and we got the optimal recipe by doing experiment. We try to reserve the good characters of Teflon: heat resistance, cold resistance, corrosion resistance, self-lubrication and non-viscosity and improve the other characters for Teflon of abrasion, low hardness and easy to cold-flow in order to make the slip-key moment stable, identical, wear resistance and keep the product at the same high quality.(5) According to the actual working requirements, we try to make the input pressure and output moment at the approaching value for the slip-shaft in order to get the required accuracy and guarantee the quality of rewinding reel.