Plasticizing apparatus

Abstract

The invention discloses a plasticizing apparatus. The apparatus comprises a motor, a driving device, a driving shaft, a plasticizing front board supported at the front end of the driving shaft through a deep groove ball bearing, and a plasticizing backboard supported at the back end of the driving shaft through an aligning roller bearing, the plasticizing backboard is upwardly provided with a motor fixing board for fixedly mounting the motor, a positioning projection used for fixation is arranged at the front end of the motor, the motor fixing board is provided with a positioning hole for the penetration of the positioning projection, the driving device comprises a small belt wheel fixedly mounted on the output shaft of the motor, a large belt wheel fixedly mounted on the driving shaft, and a synchronous belt connecting the small belt wheel with the large belt wheel, the central portion of the back end of the driving shaft is in threaded connection with a screw, the screw penetrates through the plasticizing backboard, and a thrust ball bearing is arranged between the head portion of the screw and the plasticizing backboard. The plasticizing apparatus adopting the motor to drive has the characteristics of small energy consumption, small noise, stable output torque, simple structure, low cost, small inertia and good performances.

Description

technical field [0001] The invention belongs to the field of injection molding machinery, and in particular relates to a plasticizing device. Background technique [0002] In the process of plastic injection molding, the blank must be plasticized before injection in order to convert the solid plastic into a plastic melt with certain fluidity. The plasticizing process of plastic is completed by the screw, and the plasticizing of the screw is carried out by the rotation of the screw driven by the hydraulic motor driven by the oil pump motor through the hydraulic oil. When other mechanisms operate, such as opening, closing, and ejecting The plasticizing action cannot be performed, and the rotation speed is within 200 rpm, which greatly occupies the entire production cycle of the molded product and reduces production efficiency. Moreover, the output torque of the plasticizing device driven by a hydraulic motor is usually pulsed, the output torque is unstable, the speed is not e...

AI Technical Summary

Problems solved by technology

The plasticizing process of plastic is completed by the screw. The plasticizing of the screw is carried out by the rotation of the screw driven by the hydraulic motor driven by the oil pump motor through the hydraulic oil. When other mechanisms operate, such as opening, closing and ejecting The plasticizing action cannot be performed, and the speed is within 200 rpm, which greatly occupies the entire production cycle of the molded product and reduces production efficiency

Moreover, the output torque of the plasticizing device driven by a hydraulic motor is usually pulsed, the output torque is unstable, the speed is not easy to control, the accuracy of stroke braking is low, the measurement error is large, and the energy consumption is high.

In addition, the noise is large, and it is easy to leak and pollute the environment.

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