Research On The Radial Building Drum With Gap Compensation Function

The innovative design of radial tire building drum is the key of tire building equipment research. According to the production characteristics and structural features of all-steel radial tire, we proposed a new design of radial tire building drum with the telescopic ratioλ=2.5 and the function of gap compensation. According to the new design, gap slab was introduced to compensate the gap between the internal and external slabs at the limit position of the expansion, and the telescopic ratio limit (λ< 2) of slabs-stacked tire building drum was exceed, at the same time, the quality and accuracy of the tire forming process was improved. All these made a new progress in the acquirement of big axial and radial telescopic ratio of the mechanical tire building drum. Besides, because of the external slab driving internal and gap slab structure, the low bearing property was improved in the original structure of internal slab driving external slab. The following are the main contents.The design plan of the radial telescopic tire building drum with big telescopic ratio and the function of gap compensation was proposed. The specific structure of the main part was built. The movement principle was systematically introduced.Kinematics requirements of the building drum were summarized, then the interference analysis and kinematics design were studied, and the basic parameters of building drum and the main parameters of other structures were set. Considering the factors of non-interference conditions, kinematic requirements and the simple structure, the structural parameters were calculated using Matlab.The kinematics model of building drum was built, and the kinematic analysis, including displacement, velocity and acceleration analysis, were accomplished using vector analysis method. Specific examples were given to verify. The results showed that the proposed design and structural parameters met the non-interference conditions and kinematic requirements.The virtual prototype design was accomplished using SolidWorks. The motion simulation, the interference check, and the static stiffness analysis was studied to test the feasibility of its movement. The results met the design requirements.