| 摘要 |
<p>The purpose of the machine (10) is to compact powders (for example to form crude ceramic tiles) and comprises: a lower belt conveyor device (12) and an upper belt conveyor device (14), the operation of which is synchronized such that the facing branches (28, 30) and the distant branches of the relative belts (16, 22) move in the same direction and with the same horizontal velocity component, the lower conveyor device (12) having a greater upstream extension than that of the upper conveyor device (14); means (32) for depositing in the vicinity of the upstream end of the lower conveyor device (12) a uniform layer (36) of powder of the required thickness; and powder retention means (42, 44). The facing branches (28, 30) of the two belts (16, 22) converge in their direction of advancement. The rollers (18, 20, 24, 26) of the conveyor devices (12, 14) and the relative supports are dimensioned to withstand the actions deriving from said convergence. The retention means (42, 44) are provided on each side of the conveyor devices (12, 14). The machine (10) exerts its maximum pressure along a line or band transverse to the direction of advancement. <IMAGE></p> |
