The invention is used in intermittent hollow plastic part production. It is connected with at least one extruder used to compress a certain volume of melted plastics to a shaft placed along the center line. The shaft is surrounded by concentric helical tube distributors which lead the melted plastics to ring storing room at the bottom of the cylinder. Axial sliding cylinder is placed in the casing and injects the melted plastics in the storing room through ring chink connected to the bottom of the storing room.