Patent ID: 7484947
Filing Date: 2009-02-03
Classification: B29C

Abstract:
1. A cooling and molding water tank for extrusion of a plastic complicated profile, comprising a tank body including a front end block, a rear end block, a top cover, two side plates, a bottom plate and a plurality of foot plates which are in bolted or hinged joint, wherein an inlet pipe is provided on the side plate of the water tank near the front end block, an outlet pipe is provided on the side plate of the water tank near the rear end block, and a vacuum valve and a vacuum gauge are provided on the top cover of the water tank, characterized in that a plurality of molding blocks and water collection plates are provided along the length direction inside the tank body, said molding blocks and water collection plates being spaced from each other, wherein at least a water passage is provided at a periphery of each of said molding blocks and an internal cavity is provided in each of said water collection plates such that said cooling water flows through said tank in a periphery-inner circle-periphery pattern, said internal cavity has a shape similar to that of said profile and a dimension larger than a peripheral dimension of said profile such that a gap of 0.5-8 mm is formed between the internal cavity of said water collection plate and said profile, whereby said profile is cooled homogeneously by said cooling water passing through said internal cavity.