Forming method of water pump rotor

Abstract

The invention provides a forming method of a water pump rotor. The device for realizing the method comprises a magnetic ring, a long-cylinder-shaped rotor frame and a vane wheel cover, wherein the magnetic ring is connected to the outer surface of the rotor frame in a sleeving manner; the vane wheel cover is arranged on the rotor frame; a first bearing is arranged in an inner cavity of the rotor frame; and a second bearing is arranged on a center hole of the vane wheel cover. The water pump rotor is shaped in two times, during the first-time shaping, the first bearing and the magnetic ring aresubjected to encapsulization, and are shaped on the rotor frame to form a semi-finished product; during second-time shaping, injection molding is performed on the semi-finished product to form a vanewheel, and the second bearing is subjected to encapsulization in the vane wheel cover; during shaping in two times of the two bearings, positioning is performed by the same inserting pin, so that theconcentricity can be well guaranteed; after injection molding, reaming is not needed, so that man-hour is saved; the material cost of the two short bearings is low; the bearings are shaped through encapsulization and injection molding, so that the capacity of resisting mechanical shock and temperature shock of the structure of the water pump rotor is better; and shaping is performed into two times, so that the length of the flow channels shaped in two times is greatly reduced, and rubber filling in a mold can be quicker and better realized.

Description

technical field [0001] The invention relates to a forming method of a water pump rotor. Background technique [0002] There are two traditional rotor structures: 1. The bearing and the magnetic ring are covered with rubber to form the rotor frame, and then the bearing is pressed back. The temperature and impact resistance are weak, and there is a risk of falling off under high and low temperature impact and vibration; 2. A long bearing is used for overmolding. The efficiency is high, the magnetic ring of this rotor is longer, and the inner diameter is smaller. The disadvantages of this structure: the cross-sectional area of ​​the flow channel for filling the plastic during injection molding is small and the flow channel is long, the plastic fluid is easy to cool, and the pressure loss is fast. more difficult. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a water pump rotor forming meth...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a water pump rotor forming method, aiming at solving the problem of low concentricity of the water pump rotor, weak resistance to temperature and impact, high production cost and difficulty in mold filling. The problem

Images