Automatic feeding device for plates

An automatic feeding device for plates comprises a support, sliding guide rails, a bearing tray, a tray lifting mechanism and a pushing mechanism. According to the outer sides of the periphery of the support except the upper end and the lower end, a feeding port is formed in one side and is opened, and the other three sides are respectively provided with a vertical sliding guide rail. Discharge ports are formed in the upper portions of the two sides adjacent to the feeding port, the tray lifting mechanism is arranged on the side opposite to the feeding port, the bearing tray is arranged on the three sliding guide rails and is connected with the tray lifting mechanism, the pushing mechanism is arranged at the upper end of the support, a lifting sensor used for detecting whether the plates are piled in place or not is arranged on the side face of the bearing tray, and a pushing sensor used for detecting whether the upper plates reach a pushing position or not is arranged at the upper end of the support. The tray lifting mechanism drives the bearing tray to vertically ascend and descend, and the pushing mechanism pushes the uppermost plate out. The device is simple in structure, one single plate in the piled plates can be automatically conveyed, work is reliable, and efficiency is high.