Pre-molding seat structure and injection molding machine with same

Abstract

The invention provides a pre-molding seat structure and an injection molding machine with the pre-molding seat structure. The pre-molding seat structure comprises a pre-molding seat which is used forbeing arranged on a transmission shaft in a sleeving manner, a first bearing arranged on the transmission shaft in a sleeving manner and located between the pre-molding seat and the transmission shaft, a locking piece arranged on one side of the first bearing and adjustably arranged in the axial position of the transmission shaft so as to axially lock the first bearing, and an isolation pad arranged on the inner side of the inner ring of the first bearing, wherein the isolation pad is fixedly arranged relative to the transmission shaft, so that after the locking piece pushes the inner ring ofthe first bearing by a preset distance in the axial direction of the transmission shaft, part of pressure of the locking piece is borne through the isolation pad. According to the technical scheme, the problem that in the prior art, the locking torque of a locking nut in a pre-molding seat structure is not easy to control, and consequently the working quality of a bearing is affected is solved.

Description

technical field [0001] The invention relates to the field of injection molding machines, in particular to a premolding seat structure and an injection molding machine with the same. Background technique [0002] In the existing technology, in order to save costs, the bearing configuration of the pre-molded seat is "thrust bearing + angular contact bearing + deep groove ball bearing", the thrust bearing directly contacts with the pre-molded seat, and the preload of the thrust bearing is locked The nut and the transmission shaft are realized by tightening the thrust bearing and the angular contact bearing relative to each other through the screwing of the thread pair. [0003] Due to the high quality and irregular shape of the pre-molded seat, the disassembly and maintenance of the drive shaft and other parts on the pre-plastic seat is not convenient enough, and the locking torque of the lock nut is not easy to control. The pre-tightening force on the bearing is too large, wh...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a pre-molded seat structure and an injection molding machine with it, to solve the problem that the locking torque of the lock nut in the pre-molded seat structure in the prior art is not easy to control and thus affect the working quality of the bearing

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