Check out Pcb board loading package stacking conveyor line 3D model on CGTrader for $300. High-quality Polygon mesh mesh by forestlsls: 74980561 polys, 149974614 vertices. UV Mapped.
SLDPRT (SolidWorks, filesize: 136 MB), 3DS (3D Studio, filesize: 85.3 MB), IGE (IGES, filesize: 38 MB), FBX (Autodesk FBX, filesize: 2.68 GB), STP (STEP, filesize: 29.2 MB), MAX (Autodesk 3ds Max, filesize: 270 MB), BIP (KeyShot, filesize: 484 MB)