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Injection molding nozzle

  • US 7,470,123 B2
  • Filed: 05/19/2006
  • Issued: 12/30/2008
  • Est. Priority Date: 04/15/2005
  • Status: Active Grant
First Claim
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1. An injection molding nozzle with a nozzle head (11) including at least one discharge opening (1) leading to a mold for injecting mold material into the mold and forming therein a molded body, a positively controlled closure element (2) movably supported in the nozzle head (11) for closing a communication opening in an injection mold (4), and means for moving the closure element into the communication opening (3) to a closing position fully filling out the communication opening (3) so as to displace any mold material from the communication opening (3) and for moving the closure element (2) out of the communication opening (3) into a fully retracted position and a short stroke return element (5) for displacing the closure element (2) in a direction opposite to the closing movement direction (6) thereof out of the closing position by a predetermined short stroke distance after solidification of a molding material injected into the mold to permit scratch-free removal of the molded body from the mold.

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