Mold material processing device, method and apparatus for producing same

Abstract

The invention relates to a molten material processing device having an elongated thermal element like a heating element, a thermocouple, a sensor, a heatpipe and a cooling pipe which is characterized in that the elongated thermal element is located in a recess provided in a surface of the molten material processing device, the recess, including a first portion and a second portion, has a cross-section which is larger than a cross-section of the thermal element, so as to provide a clear space between the thermal element and the surface of the processing device, the clear space which is limited by the first portion and the thermal element is filled by a thermally sprayed material and the second portion, which is adapted to the cross-section of the thermal element, partially surrounds and directly contacts same.

1 . A method of manufacturing an injection molding hot runner nozzle using a thermal spraying apparatus comprising: 
 providing a hot runner nozzle body having a nozzle melt channel and a nozzle outer surface;    placing said nozzle body on a supporting device associated with the thermal spraying apparatus, where said supporting device is further capable of rotating said nozzle body;    applying a first layered material having metallic characteristics onto said nozzle body using a spraying gun associated with a thermal spraying apparatus, wherein said layered material is sprayed while rotating said nozzle body; and    providing a processor that controls the relative position between the nozzle body retained by the supporting device and the spraying gun.    
   
   
       2 . The method of manufacturing an injection molding hot runner nozzle according to  claim 1 , wherein said applying of the first layered material is carried out by a thermal spraying process selected from a group consisting of plasma spraying, flame spraying and arc spraying.  
   
   
       3 . The method of manufacturing an injection molding hot runner nozzle according to  claim 1 , wherein the first layered material includes one of aluminum, bronze, copper and nickel.  
   
   
       4 . The method of manufacturing an injection molding hot runner nozzle according to  claim 1 , wherein the first layered material is a thermally conductive material.  
   
   
       5 . The method of manufacturing an injection molding hot runner nozzle according to  claim 1 , wherein a second layered material is sprayed onto said outer surface of said nozzle body.  
   
   
       6 . The method of manufacturing an injection molding hot runner nozzle according to  claim 5 , wherein the second layered material has adhesive characteristics.  
   
   
       7 . The method of manufacturing an injection molding hot runner nozzle according to  claim 1 , wherein the first layered material is applied onto select portions of said outer surface of said nozzle body.  
   
   
       8 . The method of manufacturing an injection molding hot runner nozzle according to  claim 1 , further comprising: 
 performing a cleaning process on said outer surface of said nozzle body prior to applying the first layer material.    
   
   
       9 . The method of manufacturing an injection molding hot runner nozzle according to  claim 8 , wherein said cleaning process includes sand blasting said outer surface of said nozzle body.