Clamping and holding machine with tray stacking function and using method of clamping and holding machine

The invention discloses a clamping machine with tray stacking and a using method thereof.The clamping machine comprises a rack assembly, an X-axis moving assembly, a Z-axis lifting assembly, a clamp assembly and a control device, the X-axis moving assembly is arranged above the rack assembly, the Z-axis lifting assembly is arranged on the X-axis moving assembly, the top end of the clamp assembly is connected with the bottom end of the Z-axis lifting assembly, and the bottom end of the Z-axis lifting assembly is connected with the control device; the X-axis moving assembly can drive the clamp assembly and the Z-axis lifting assembly to move left and right in the X-axis direction, the Z-axis lifting assembly can drive the clamp assembly to vertically ascend and descend, and the control device is connected with the X-axis moving assembly, the Z-axis lifting assembly and the AGV to control operation. According to the clamping and embracing machine with the tray stacking function, the tray disassembling requiremen