Die assembly

The invention discloses a mold assembly, and relates to the technical field of molds, the mold assembly comprises a bottom mold, the bottom mold is provided with a top mold, the bottom mold is provided with a top block, the top block is provided with an ejector pin, the bottom mold is provided with a compression chamber, the top end of the ejector pin is provided with a spray hole, the top mold is provided with a pressing switch valve, and the input end of the pressing switch valve is provided with a release agent injection connecting pipe; according to the mold assembly, the top mold is pulled to move outwards, the top mold is firstly separated from a plastic product, then the bottom mold is pulled to move outwards along with the top mold, and the first spring pushes the ejector pin to be separated from the plastic product in the injection molding groove, so that the problem that the ejector pin is adhered to the plastic product is solved, and meanwhile air in the pressing chamber enters the space between th