SELF-CENTERING DEVICE FOR TIRE-CHANGING MACHINES

摘要

A self-centering device for tire-changing machines (1) comprising: a turntable (10) for support and fixation of wheels; a plurality of spikes (11), also known as jaws, having a body (17) that defines a base (18) and an opposite engaging tooth (19) and being slindingly arranged on a work surface (10A) of said turntable (10) between an active rim-holding position and an inactive rim-releasing position; means (12) for simultaneous actuation of said spikes (11) from said active position to said inactive position and vice versa; guide means (13, 14) formed in said turntable (10) for guiding said spikes (11); slider means (21, 23) for causing low-friction sliding of said spikes (11) being interposed between said spikes (11) and said turntable (10).