PURPOSE: To move a peg tray from one to the other of two belt conveyors provided with multiple parallelly arranged belts and arranged to cross each other without being affected by fluffy dust.

CONSTITUTION: The first belt conveyor 1 and the second belt conveyor 2 are arranged in the perpendicular directions to each other at their end sections. Both belt conveyors 1, 2 are provided with multiple belts 1a-1c, 2a-2c arranged in parallel with each other. Each of the belts 1a-1c is overlapped on a belt of the second belt conveyor 2 corresponding to this belt and the belts arranged inside it. Belts of the second conveyor 2 arranged outside the belt of the second belt conveyor 2 corresponding to this belt are overlapped on it. Guide plates changing the moving direction of a peg tray are provided at intersections of the corresponding belts.