DRIVER FOR SCREW TYPE FOUR AXIAL EXTRUSION MACHINE

PROBLEM TO BE SOLVED: To make it possible to change the rotating direction by selecting between a direct drive and an indirect drive through an intermediate gear when a third output shaft is driven by a first output shaft. SOLUTION: A first gear 6 is installed on an input shaft 5 and a second gear 7 and a third gear 8 which can be moved in the axial direction are installed on the first output shaft 1. In addition, a fourth - a sixth gear 9-11 are mounted on a second-a fourth output shaft 2-4. Further, the rotation of the input shaft 5 is transmitted to the fourth output shaft 4 from the first - the third gear 6-8, an intermediate gear 12, the fourth gear 9 and the third gear 8 and the fifth gear 10 through a second intermediate gear 13 and the sixth gear 11. In this case, the input shaft 5, the third and the fourth output shaft 3, 4 are rotated in the same direction. Further, if the third and the fifth gear 8, 10 are connected to each other through a third intermediate gear 14, the rotation of the input shaft 5 is transmitted passing through the first, the second gear 6, 7, the first intermediate gear 12, the fourth, the third gear 9, 8, the third intermediate gear 14 and the fifth gear 10 in that order. The fourth output shaft 4 is reversed through the fifth gear 10, the second intermediate gear 13 and the sixth gear 11.