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Photocuring type 3D printer and peeling method for using the same

  • US 10,639,820 B2
  • Filed: 01/14/2018
  • Issued: 05/05/2020
  • Est. Priority Date: 09/14/2017
  • Status: Active Grant
First Claim
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1. A photocuring type 3D printer, comprising:

  • a sink for containing a forming liquid;

    a glass layer disposed on a bottom of the sink;

    an adjusting unit disposed on one side of the sink and controlled to move horizontally;

    a membrane disposed above the glass layer, one side of the membrane connected to the adjusting unit, the other side of the membrane connected to the other side of the sink opposite to the adjusting unit;

    an emitting unit disposed below the sink and configured for emitting lights toward an internal side of the sink;

    a forming platform disposed above the sink; and

    a microprocessor unit electrically connected to the adjusting unit, the emitting unit and the forming platform;

    wherein, the microprocessor unit is configured to control the adjusting unit to move horizontally toward an outward direction of the sink to a homing location for tightening the membrane before starting to print a printing layer of a model, and the emitting unit is configured to emit lights for solidifying the printing layer and attaching to the forming platform;

    wherein the microprocessor unit is configured to control the adjusting unit to move horizontally toward a center of the sink for relaxing the membrane after the printing layer is solidified, and is configured to control the forming platform to move along a z axis for peeling the printing layer from the membrane; and

    wherein, the adjusting unit comprises a connecting rod with one end connected to the membrane and a motor connected to other end of the connecting rod via a screw and electrically connected to the microprocessor unit, wherein the microprocessor unit is configured to control the motor to rotate toward a first direction for leading the connecting rod to move horizontally toward the motor to the homing location for tightening the membrane before printing the printing layer, and is configured to control the motor to rotate toward a second direction for leading the connecting rod to move horizontally away from the motor for relaxing the membrane.

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