Extrusion molding device for PVC plastic production

The utility model provides an extrusion molding device for PVC (polyvinyl chloride) plastic production, which relates to the technical field of plastic production and comprises an outer shell, a collecting box is detachably mounted at the bottom of the inner wall of the outer shell, a first support rod is fixed at the bottom of one side of the outer shell, and a servo motor is fixed at the top of the first support rod. According to the device, when a telescopic air cylinder is controlled to drive a telescopic rod to extend to drive a main cutting blade to conduct downward pressing cutting, and when the main cutting blade does not touch a plastic plate, an extrusion plate is in contact with leftover materials, the main cutting blade continues to conduct downward pressing cutting, a spring is compressed, and a sliding rod slides in a second connecting rod; and a telescopic air cylinder is controlled to drive a telescopic rod to be shortened, at the moment, a main cutting blade is separated from the plastic, a s