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A water pump rotor forming method

A molding method and technology of water pump rotors, which are applied in the direction of pumps, pump components, non-variable pumps, etc., can solve the problems of low concentricity of water pump rotors, weak resistance to temperature and impact, and difficulty in mold filling. Good mechanical shock, good temperature shock resistance and low cost

Active Publication Date: 2021-02-23
东莞市力诚泵业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A water pump rotor forming method
  • A water pump rotor forming method
  • A water pump rotor forming method

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Embodiment

[0016] See attached Figure 1-4 , a method for forming a water pump rotor, comprising a concentrically arranged magnetic ring 2, a long cylindrical rotor frame 1, and an impeller cover 3, the magnetic ring 2 is sleeved on the outer surface of the rotor frame 1, and the impeller cover 3 is set on the rotor frame 1, the inner cavity of the rotor frame 1 is provided with a first bearing 4, and the center hole of the impeller cover 3 is provided with a second bearing 5, which is molded in two steps, the first time During the second molding, the impeller cover 3 is formed by injection molding on the semi-finished product, and the second bearing 5 is coated with glue on the impeller In the cover 3, the two bearings are positioned with the same pin when they are molded twice, which can better ensure the concentricity. After injection molding, there is no need for reaming, which saves man-hours. The material cost of the two short bearings is low, and the bearings are overmolded. , Th...

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Abstract

The invention provides a method for forming a water pump rotor, which includes a magnetic ring, a long cylindrical rotor frame and an impeller cover, the magnetic ring is sleeved on the outer surface of the rotor frame, and the impeller cover is arranged on the rotor frame Above, the inner cavity of the rotor frame is provided with a first bearing, and the center hole of the impeller cover is provided with a second bearing, which is molded in two steps. In the first molding, the first bearing and the magnetic ring are coated with glue Molded on the rotor frame to form a semi-finished product; in the second molding, the impeller is formed by injection molding on the semi-finished product, and the second bearing is glued in the impeller cover, and the two bearings are positioned with the same insert pin when they are molded twice, which can be better. The concentricity is perfectly guaranteed, no reaming is required after injection molding, saving man-hours, the material cost of the two short bearings is low, the bearings are overmolded, this structure has better resistance to mechanical shock and temperature shock, and the molding is divided into two, Then the length of the runners of the two moldings is greatly reduced, which can realize faster and better filling in the mold.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D29/046
CPCF04D29/046F04D29/2222
Inventor 李万谢中英肖仁力
Owner 东莞市力诚泵业有限公司
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