The Research Of Vulcanization Equipment For Rubber Track Without Overlap Jiont

Rubber track is an annular rubber belt made of rubber and core metal/fiber material, which is mainly used as the walk part of agricultural machinery, engineering machinery, transport vehicle, etc. With the advantages of high-speed, anti-vibration, big-traction-force, low-noises,no damage to the road, resistance to wear and tear and long-life, rubber track enlarges the use scale of crawler and wheel-walking transport machinery. Now most enterprises manufacture rubber tracks by twice-vulcanized process with some problems: unuinformly vulcanized joint, easy to tears, low production efficiency. While the concurrent-vulcanizing process can solve the problems by vulcanizing rubber track at the same time. The equipment for rubber track without overlap joint by concurrent-vulcanizing process are researched and the main researches are as follow:(1) A new kind of vulcanization equipment for rubber track by concurrent-vulcanizing process is designed. In order to improve utilization, the mould is approximate elliptic and is divided as middle module, arc module, straight module. The displacement of all modules and oil-cylinders is calculated.(2) Kinematics simulation analysis: according to the STEP function of module displacement, the speed-time function and acceleration-time function of corresponding module are available by simulation, then the displacement-time function, speed-time function and acceleration-time function of internal module oil-cylinders are available. The simulation displacement of internal module oil-cylinders is consistent with the calculated value. The function of internal module oil-cylinder's displacement to internal module's displacement is available, so as the function of internal module oil-cylinder's speed to internal module's speed and the function of internal module oil-cylinder's acceleration to internal module's acceleration. There is no rigid impact in addition to small flexible impact of module movement.(3) The temperature field and the flux field of equipment are available by the static thermal analysis and the temperature field of all vulcanization modules is inspected to analyze temperature range and uniformity of mold cavity in detail. The temperature field and the flux field of equipment in 7200s are available by the transient thermal analysis of and the approximate heating time is got from the temperature rising trend of selected points on vulcanization modules. The temperature field and the flux field of rubber track and equipment are available by the static thermal analysis and the temperature field of rubber track is mainly inspected to discuss its temperature uniformity.(4) The static structural-thermal analysis is made according to given temperature and pressure by indirect coupling method and the deformation, stress, strain, safety factor, reaction force, contact pressure of the equipment are available. The stiffness of the vulcanization model are checked by calculating deformation value. The stress of some parts is bigger than the yield limit and become smaller after changing the material setting. The reaction forces value and direction of all fixed constraints are determined finally.