| 主权项 |
1. A stencil printer for printing viscous materials on electronic substrates, the stencil printer comprising:
a frame; an electronic substrate support coupled to the frame, the electronic substrate support being configured to support an electronic substrate and move the electronic substrate between a lowered position and a raised position; a stencil shuttle assembly coupled to the frame, the stencil shuttle assembly being configured to support a stencil and to move the stencil between a first position in which the stencil is positioned toward a front of the stencil printer and a second position in which the stencil is positioned toward a back of the stencil printer; a print head coupled to the frame, the print head being configured to engage the stencil to dispense a material onto the substrate during a print stroke; a drive assembly coupled to the frame and the print head, the drive assembly being configured to move the print head to perform the print stroke and configured to selectively move the stencil shuttle frame between the first and second positions; and a vision system coupled frame to inspect a surface of the substrate, wherein the stencil shuttle assembly is configured to align the stencil with the substrate, the stencil shuttle assembly including a staging frame configured to receive and secure the stencil thereto, a stencil shuttle coupled to the frame and to the staging frame to move the staging frame and the stencil, a first actuator configured to move the staging frame with respect to the stencil shuttle in a first direction, a second actuator configured to move the staging frame with respect to the stencil shuttle in a second direction, the second direction being generally perpendicular to the first direction, and a third actuator configured to move the staging frame with respect to the stencil shuttle in the first direction, the first, second and third actuators being configured to align the substrate. |
