The gearbox for the Extruder & Calender is a kind of high precision, heavy duty and tooth-flank hardened product matched for the downside assistant machine of the internal mixer, which is comprised of the gearboxes for the extruder and the sheeting machine. There are five types of driving of this main gearbox, and left and right driving kinds for each type.
The gearbox of extruder (type A) includes left and right sets of gear boxes (a cylindrical gearbox and a bevel gearbox respectively), and one of the bevel gearbox is connected to motor through flexible coupling with its input shaft. Input shafts of the two bevel gearboxes are connected by universal coupling. Both bevel gearboxes are reversed the rotation director by bevel gears, and reduced the speed by parallel gears, and finally the speed of two output shafts (hollow shaft) get the same but rotate on opposite directions and drive the meshing thread rod respectively.
The gearbox of extruder (type B) is connected to the motor by flexible coupling, and through three stages of gears reducing the speed, the output shaft (hollow shaft) gets the output speed. As the rotor shaft of the extruder has been assembled into the hollow shaft, the movement and power are transmitted to the rotor shaft through hollow shaft, after that, through a pair of bevel gearboxes, it drives the meshing thread rod of the extruder.
The input shafts of gearboxes of extruder (type C) and sheeting machine (type D) are connected to motors through flexible couplings. Reduced by three stages of parallel gears, the rotation speed at the output shaft âÂ?? is n1, and then the power is distributed by a gear between two output shafts with has the same teeth number, shaft âÂ??¡ gets the same rotation speed with shaft âÂ?? . These two output shafts are connected to rotor shafts of the working machine through universal couplings, thus the two rotor shafts work under same rotation speed and opposite directions.
The input shaft of geabox of sheeting machine (type E) is connected to the motor through flexible coupling. By three stages’ reduction, the output shaft gets it speed, this speed is transmitted to the rotor shaft of sheeting machine through crowned teeth coupling.
Screw Diameter:250,300,330,416,450
Power:90kw~315kw
Output Revolution:18~38rpm
