US 12,078,673 B1
Workpiece positioning mechanism and workpiece inspection apparatus
Taichi Aranami, Shizuoka (JP); and Shohei Suzuki, Shizuoka (JP)
Assigned to TAKAOKA TOKO CO., LTD., Tokyo (JP)
Filed by TAKAOKA TOKO CO., LTD., Tokyo (JP)
Filed on Apr. 29, 2024, as Appl. No. 18/648,608.
Application 18/648,608 is a continuation of application No. PCT/JP2023/014898, filed on Apr. 12, 2023.
Int. Cl. G01R 31/28 (2006.01)
CPC G01R 31/2867 (2013.01) [G01R 31/2887 (2013.01); G01R 31/2889 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A workpiece positioning mechanism comprising:
a tray on which a workpiece is placed;
a frame in which a notch defining a height position of the tray positioned in an inspection region is formed;
a plurality of pins that are provided on the frame and position the tray; and
a bias applier that positions the tray in the inspection region by biasing a bottom surface,
wherein each of the plurality of pins is composed of:
a body portion that is connected to the frame, has a side circumferential surface having a constant outer diameter, and defines a planar position of the tray by abutting against a periphery of the tray with the side circumferential surface; and
a tapered portion that has a conical surface formed by narrowing an outer diameter from the body portion toward a tip and guides the tray to the inspection region by making the conical surface slide into contact with the periphery of the tray.