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Fluid-dispensing head for a 3D printer

  • US 9,314,970 B2
  • Filed: 02/26/2014
  • Issued: 04/19/2016
  • Est. Priority Date: 02/27/2013
  • Status: Active Grant
First Claim
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1. A printer head assembly, comprising:

  • a support for coupling the printer head assembly to a 3D printer; and

    a fluid-dispensing head includinga manifold,first and second nozzles mounted to the manifold, each of the first and second nozzles having an outlet and a respective valve member opening and closing the respective outlet, wherein, when the outlet of a nozzle is open, the respective nozzle may dispense a flowable material from the manifold onto a substrate,a rocker oscillating the fluid-dispensing head about a rocker axis and moving each of the first and second nozzles to and from respective nozzle-operating positions, wherein,when one of the first and second nozzles is in its respective operating position, the outlet of the nozzle that is in the nozzle-operating position is open for dispensing the flowable material,with one of the first and second nozzles in its nozzle-operating position, the outlet of the other of the first and second nozzles is closed and disposed farther from the substrate than the outlet of the one of the first and second nozzles that is in its nozzle-operating position, andthe rocker includesat least one cam surface for engaging a respective fixture, located on the support, and, upon engagement with the fixture, displacing the rocker and moving the fluid-dispensing head, andfirst and second abutments abutting and engaging respective valve members for opening and closing the outlets of each of the first and second nozzles when a respective nozzle is in its nozzle-operating position, andan actuator controlling angular position of the rocker.

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