Structure Optimization And Reliability Analysis On Key Components Of The Feeding Device In Rubber Mixing Line

The feeding device of rubber mixing line is used to transport rubber material amongseveral open rubber mixing machines when the rubber mixing machine squeeze repeatedly.The device reduces the manual labor greatly and improves the production efficiency.The forearm and middle arm is the key parts of feeding device and the structure and size oftwo arms affects the overall performance of the feeding device directly. In this paper, twoarms will be optimized by finite element analysis software and the reliability of optimizedstructure will be analyzed to solve the problem that the design margin is too large. Thedetail contents include the following:The specific structure of the feeding device has been determined according to therequirements. The three-dimensional model of two arms has been built. The distribution ofequivalent stress and deformation state of two arms has been obtained with the finiteelement analysis software. Two arms have been optimized with the appropriate designvariables and state variables by the structure optimization design module. The fatiguereliability and sensitivity of two arms have been analyzed with the reliability analysismodule. The fatigue reliability value of two arms have been obtained, reducing a lot offatigue experiment, the reliability of the optimized parts have been verified and theparameters of influential maximum equivalent stress and deformation have been analyzed.The key components of the feeding device have been optimized and the fatiguereliability of optimized arms has been analyzed. The design margin of key componentshave been reduced and the volume of forearm and middle arm have been fell30%and50%respectively, the production cost also has been reduced. The fatigue reliability of theoptimized key components has been verified. This paper provides an important designreference for similar parts.