A Method for Optimal Design of the Flow Channel of the Head of a Tire Rubber Extruder

Abstract

The invention provides an optimal design method for flow channels of tire rubber extruder heads. The method comprises the steps of firstly, building a head flow channel model and calculating optimal structure parameter design values of a head flow channel on the basis of Polyflow mold flow analysis, a Plackett Buman test method, a response surface analysis method and a simulated annealing optimization algorithm; testing the effectiveness of the Polyflow mold flow analysis method through simulated and measured values of the cross-sectional area of an extruded rubber material; establishing an optimized objective function through the response surface analysis; testing the effectiveness of a response surface model through variance analysis; and carrying out optimized analysis on the objectivefunction by adopting the simulated annealing optimization algorithm. By adopting the method provided by the invention, the law that flow channel parameters influence the rubber material extruding is mastered; the calculation results are combined to ensure that the flow velocity of the internal rubber material in a designed and manufactured head flow channel is uniform and the edge warping phenomenon disappears; and therefore, the quality of rubber products is increased, the new product developing cycle is shortened, the production efficiency is increased and the objective requirements of highefficiency and accuracy of a rubber material extruding die are met.

Description

technical field The invention relates to the field of tire rubber extrusion production, and relates to a method for optimizing the design of the flow path of the head of a tire rubber extruder Background technique There is still a significant gap between domestic tire brands and foreign brands, mainly due to the lack of independent research and development capabilities of my country's tire industry. The production of tires with superior performance is not only related to reasonable tire structure design and excellent process production level, but also the quality of the rubber parts itself plays an important role. There are many factors that affect the extrusion quality of rubber materials, such as the design of the flow channel of the nozzle, the shape of the mouth, the screw speed, the traction speed and the extrusion temperature, etc. If these parameters are not matched, many defects will appear in the rubber parts during the extrusion process. , such as irregularities s...

AI Technical Summary

Problems solved by technology

The domestic design of the extrusion die mainly adopts the "trial and error" method to test the extrusion quality of the rubber compound. This method has a lot of blindness, and has the disadvantages of long cycle time and high cost.

Images