| 摘要 |
The element moving device includes a supporting structure (29, 30) movable in the X-direction on guide rods (27, 28) and carrying an axle (40) on which an assembly comprising three gear wheels (41, 42, 43) is freely rotatable. Two wheels (41, 42) are engaged by corresponding conveyor belts (44, 45) extending in the X-direction and able to control the rotation or standstill of the axle. The third wheel (43) is coupled to a carriage (54) movable in the Y-direction by a third conveyor belt (48) and carrying the element to be displaced. Each of the two conveyors (41, 42) is controlled by a pair of stepper motors (10, 16) which allow small and accurate displacements to be realized. |
