How to make EPS foam mold

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EPS plastic foam is a kind of polystyrene foam plastic. It is widely used in packaging and heat preservation due to its light weight, firmness, shock absorption, low moisture absorption, easy molding, good water resistance, heat insulation, and low price. , waterproof, heat insulation, shock absorption and other fields, is one of the most widely used plastics in the world today. The molding of plastic foam is completed by using molds. The existing EPS plastic foam molding molds are basically composed of an upper die and a lower punch. The mold cavities of different shapes formed by the upper die and the lower die are used for processing. plastic foam. However, the mold is heavy, and it takes more physical effort to open and close the mold.
The utility model discloses a four-petal mold foaming mold, which comprises an upper mold, a lower mold, a cylinder arranged on the upper mold and a first mandrel arranged between the upper mold and the lower mold, the upper mold and the second A second core mold is arranged between one core mold, the piston rod of the cylinder passes through the second core mold and is fixedly connected with the first core mold, and a guiding structure is arranged between the first core mold and the second core mold; A limiting structure is arranged between the second core mold and the upper mold. For the four-lobe mold foaming mold of the above technical solution, the cylinder drives the relative movement of the first core mold and the second core mold to realize mold closing and parting, and the guide structure can guide the relative movement of the first core mold and the second core mold , to avoid radial movement errors during movement, the limit structure can ensure the distance between the second mandrel and the upper mold, facilitate mold cleaning after mold splitting, and effectively curb the occurrence of safety accidents.

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