Step 2 Go provides methods, tire mold expandable bead molding ring assembly and the mold for a green tire

摘要

Apparatus and methods for forming the expandable bead molding ring assembly 250, a tire 110 from a retracted and removed, in the inflated state in the radial direction, the expansion for molding a tire bead (112b) in the following the movement and provided with a two-phase to the combined state. 2 is driven by a step move easily be accomplished using a simple assembly of the components to be produced, the hub simple continuous downward (axially outward) of 209 to move the mold press (220) (320). A combination of annular elements provided with a spring is moving the hub in a two-stage conversion of a desired movement of the segments (254, 256) of the segmented bead molding ring 252. Frusto-conical cam surface (258, 266) is divided axially oriented force (420a, 420b), a radial force component (410a, 410b) and axial force components (415a, 415b) from the mold press to move 320 It is used to cause a radial movement (310) and axial movement (315) during the second step corresponding to the move. Spring resistance are in balance, stop surface is provided to control lists and accordingly a two-step movement. Preferably, the elements of the expandable bead molding ring assembly is assembled with the side wall mold, a single, different is easy to mold press and out for the mold replacement, repair, and easy to replace in order to adopt a different profile to be molded on beads of the tire structure unit (280 ) it is formed.