A driving mechanism for double lead screws in the injection device of an all-electric injection molding machine

Abstract

The invention discloses a double-screw driving mechanism in an injecting device of a fully-electric injection molding machine. The double-screw driving mechanism comprises a transmission main shaft, a main shaft driving mechanism, a connecting rod assembly, an injecting table back seat, and a first screw and a second screw which are parallel to each other, wherein the first screw and the second screw are connected to the injecting table back seat through bearing bases respectively; the connecting rod assembly is arranged inside the injecting table back seat; a first end of the transmission main shaft extends out of the injecting table back seat and is connected with the main shaft driving mechanism; a second end of the transmission main shaft is fixedly connected with the connecting rod assembly; the tail part of the first screw and the tail part of the second screw are fixed on the connecting rod assembly respectively; the transmission main shaft drives the connecting rod assembly to do a circumferential motion so as to enable the first screw and the second screw to do a circumferential motion along with the connecting rod assembly and rotate synchronously. The double-screw driving mechanism has the advantages that the double-screw driving mechanism is not flexibly deformed; the first screw and the second screw do the circumferential motion along with the connecting rod assembly and rotate synchronously to ensure synchronous feeding of double screws, so that the double screws equably bear an injecting load, keep the same working condition and have the same service life.

Description

Technical field [0001] The invention relates to a driving mechanism, in particular to a driving mechanism of a double screw in an injection device of an all-electric injection molding machine. Background technique [0002] The movement of the all-electric injection molding machine to inject the glue is completed by the motor driving the screw to push the screw. During this process, the screw bears all the injection force. The current screw manufacturing technology can only meet the injection force of small and medium-sized all-electric injection molding machines. With the development of technology, all-electric injection molding machines have gradually developed to large-scale, and the injection force has also increased. Due to the slow development of lead screw manufacturing technology, currently the double lead screw drive screw injection scheme is mostly used in large all-electric injection molding machines. [0003] The double screw can share the injection force and reduce the...

AI Technical Summary

Problems solved by technology

The two screw screws in this device are connected by one of the synchronous belt pulleys through the synchronous belt to realize the synchronous rotation of the two screw screws. However, since the synchronous belt pulley is connected by the synchronous belt is a flexible structure, it is easy to produce deformation, so that the synchronous rotation of the two leadscrews cannot be realized well

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