Clamping device for assembling automobile plastic parts

The utility model discloses a clamping device for assembling automobile plastic parts, and relates to the technical field of automobile plastic part processing, the clamping device comprises a placing plate and a pushing assembly arranged on one side of the upper end of the placing plate, the middle part of the upper end of a supporting assembly is fixedly provided with an ejection assembly, and the ejection assembly is fixedly installed on the middle part of the upper end of the supporting assembly by adjusting the set height of a semicircular block. After the semi-circular block is arranged at the lower end of the automobile plastic part in a supporting mode, the pushing assembly and the butt clamping assembly are started to clamp the automobile plastic part, the supporting position of the semi-circular block can be adjusted according to the specific size of the automobile plastic part, and when the fixing position of the cylinder and the semi-circular block is determined, the long screw rod is fixed in a t