Method of and apparatus for changing colors of injection molding hot runner die
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United States of America Patent
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Oct 16, 2012
Grant Date -
Mar 1, 2007
app pub date -
Aug 14, 2006
filing date -
Aug 30, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A color changing apparatus of an injection molding hot runner die which is simple in construction and easily capable of changing colors for molding products without removing and replacing a hot runner. In the apparatus, a passage for supplying a melted resin to a molding die, a divided type hot runner block is provided with hot runners each for exclusive use of each of molding colors, sprues and nozzles being in communication with the hot runners. A moving device is provided for moving the molding die, which is united with the divided type hot runner block, along with the divided type hot runner block. A positioning device is adapted to place the molding die in position in a state where either of the sprues of the divided type hot runner block is moved by the moving device to a position opposed to an injection nozzle for injecting the melted resin.
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