Tire unstacker

The utility model relates to a tire unstacker. The tire unstacker comprises an electronic control system, a machine frame, a lifting mechanism, a clamping mechanism and an ejecting mechanism. The clamping mechanism comprises a clamping driving device, a clamping support and a synchronous support. The lifting mechanism comprises a speed reducing motor, at least two sets of chain wheels and a lifting movable support. The two sets of chain wheels are connected through a chain. The speed reducing motor is electrically connected with the electronic control system and drives one set of chain wheels at the top end of the machine frame through a transmission shaft. The machine frame is longitudinally provided with a linear guide rail. The lifting movable support is connected to the linear guide rail in a sliding mode and is driven by the chain to move along the linear guide rail. The synchronous support is installed on the lifting movable support, and the synchronous support is respectively connected with the clampin