Patent ID: 9676024
Date: 2017-06-13
CPC Classifications: B22D

Claim:
1. A conveying device for molten metal in an injection die casting unit, the conveying device comprising: a storage container for the molten metal; a valve body; an adjustable valve rod connected to the valve body; a piston having an outer wall; a conveying duct in which the molten metal is deliverable to a mold cavity, wherein the conveying duct comprises a cylinder bore in which the piston is disposed in an axially adjustable manner, and wherein: a collection chamber for the molten metal, from which the molten metal is introducible through an onward line into the mold cavity as a result of an axial displacement of the piston; an annular space is formed between the outer wall of the piston and an inner wall of the cylinder bore; the annular space is connected via at least one filling bore to the collection chamber, wherein the molten metal from the storage container feeds into the at least one filling bore; an end of the at least one filling bore opens into the collection chamber and is closable by means of the valve body which is connected to the adjustable valve rod; and the valve rod is displaceably disposed in an axial bore of the piston.