Melting unit for a moulding machine and a moulding machine

Abstract

A melting unit for an injection unit of a moulding machine, includes a melting vessel, an induction coil surrounding the melting vessel at least in areas for the inductive melting of a conductive material to be arranged in the melting vessel. At least in that area where it is surrounded by the induction coil, the melting vessel has an irradiation area that is substantially permeable to an electromagnetic field, and has a delivery opening for the melted conductive material. The melting vessel consists of a non-metallic material at least in the radiation area and in that the melting vessel has an uninterrupted lateral surface.

1 . A melting unit for an injection unit of a moulding machine, comprising a melting vessel, an induction coil surrounding the melting vessel, at least in areas for the inductive melting of a conductive material to be arranged in the melting vessel, wherein at least in that area where it is surrounded by the induction coil the melting vessel has an irradiation area that is substantially permeable to an electromagnetic field, and a delivery opening for the melted conductive material, wherein the melting vessel consists of a non-metallic material at least in the radiation area and in that the melting vessel has an uninterrupted lateral surface. 
     
     
         2 . The melting unit according to  claim 1 , wherein the melting vessel consists of the non-metallic material up to the delivery opening, wherein it is preferably provided that a mechanical strengthening structure for the melting vessel is provided in an injection area adjacent to the delivery opening or extending up to the latter. 
     
     
         3 . The melting unit according to  claim 1 , wherein the melting vessel has an injection area, extending from the delivery opening in the direction of the radiation area, which consists of a metallic material, wherein it is preferably provided that the injection area extends up to the radiation area. 
     
     
         4 . The melting unit according to  claim 3 , wherein a tempering device for tempering the injection area is provided. 
     
     
         5 . The melting unit according to  claim 1 , wherein the non-metallic material of the radiation area is graphite, stone, ceramic, ceramic alloy or glass. 
     
     
         6 . The melting unit according to  claim 1 , wherein a dispensing device is provided, by which a mould-release agent can be applied to an inside of the melting vessel at least in the radiation area, wherein a chemical reaction between the melted conductive material and the non-metallic material of the radiation area can be prevented by the mould-release agent. 
     
     
         7 . The melting unit according to  claim 1 , wherein a delivery device for the conductive material to be melted is provided. 
     
     
         8 . The melting unit according to  claim 6 , wherein the dispensing device for the mould-release agent is arranged on the delivery device or formed by it. 
     
     
         9 . An injection unit for a moulding machine with at least one melting unit according to  claim 1 . 
     
     
         10 . The moulding machine with an injection unit according to  claim 9 .