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Rotor magnetic ring of high-efficiency micromotor and manufacturing method of rotor magnetic ring

A micro-motor and rotor technology, which is applied in the manufacture of motor generators, stator/rotor bodies, and magnetic circuits characterized by magnetic materials, can solve problems such as reducing injection molding temperature, molding instability, and magnetic performance degradation. Achieve the effect of reducing reluctance, motor quality breakthrough, and low motor noise

Active Publication Date: 2015-02-04
JIANGSU LEILI MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: the purpose of the present invention is to overcome the deficiencies of the prior art. Aiming at the prior art, when adding lubricant, it is necessary to add a heat stabilizer, which reduces the content of magnetic powder, causing a decline in magnetic properties, unstable molding, and short life. Insufficiency; provide a formula using internal and external lubricants instead of heat stabilizers, which can not only reduce the injection molding temperature, increase the number of times and utilization of the material, reduce the decomposition and oxidation of nylon, but also improve the fluidity and improve the magnetic powder The usage content and the distribution uniformity of the magnetic powder ensure the smooth movement of the motor, improve the performance of the pellets, reduce the density of the material, and make the rotor lightweight, stable in molding, and high in manufacturing accuracy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. A high-efficiency micro-motor rotor magnetic ring, which is manufactured by injection molding with the following weight percentages of raw materials:

[0029] Ferrite powder 88%, poly 1,9-nonylidene terephthalamide (nylon 9T) 4%, polylaurolactam (nylon 12) 3%, nylon 6 / clay nanocomposite (NCH) 4% , Oleic acid 2%. The ferrite magnetic powder is spherical.

[0030] 2. The preparation method of the rotor magnetic ring of the micro motor includes the following steps:

[0031] (1) First use a high-speed mixer to mix 1 parts by weight of anisotropic spherical ferrite powder, poly 1,9-nonylidene terephthalamide (nylon 9T), polylaurolactam (nylon 12) Nylon 6 / clay nanocomposite (NCH) and oleic acid are mixed uniformly;

[0032] (2) Then use a twin-screw mixer at 232°C to fully mix each component mixture in step (1) to obtain high-performance injection-molded permanent ferrite, which is then pelletized to obtain an average particle size of 2 to 4 mm The particles are then obtained b...

Embodiment 2

[0034] 1. A high-efficiency micro-motor rotor magnetic ring, which is manufactured by injection molding with the following weight percentages of raw materials:

[0035] Ferrite magnetic powder 80%, poly 1,9-nonylidene terephthalamide (nylon 9T) 7%, polylaurolactam (nylon 12) 3%, nylon 6 / clay nanocomposite (NCH) 7% , Oleic acid 5%. The ferrite magnetic powder is nearly spherical particles.

[0036] 2. The preparation method of the rotor magnetic ring of the micro motor is characterized in that it comprises the following steps:

[0037] (1) First use a high-speed mixer to mix 1 parts by weight of anisotropic spherical ferrite powder, poly 1,9-nonylidene terephthalamide (nylon 9T), polylaurolactam (nylon 12) Nylon / clay nanocomposite (NCH) and oleic acid are mixed uniformly;

[0038] (2) Then use a twin-screw mixer at 240°C to fully mix each component mixture in step (1) to obtain high-performance injection-molded permanent ferrite, which is then pelletized to obtain an average particle...

Embodiment 3

[0040] 1. A high-efficiency micro-motor rotor magnetic ring, which is manufactured by injection molding with the following weight percentages of raw materials:

[0041] Ferrite magnetic powder 85%, poly 1,9-nonylidene terephthalamide (nylon 9T) 5%, polylaurolactam (nylon 12) 3%, nylon 6 / clay nanocomposite (NCH) 5% , Native oleic acid 2%. The ferrite magnetic powder is spherical particles.

[0042] 2. The preparation method of the rotor magnetic ring of the micro motor is characterized in that it comprises the following steps:

[0043] (1) First use a high-speed mixer to combine the anisotropic spherical ferrite powder, poly 1,9-nonylidene terephthalamide (nylon 9T), polylaurolactam ( Nylon 12), nylon / clay nanocomposite (NCH) and native oleic acid are mixed uniformly;

[0044] (2) Then use a twin-screw mixer at 250°C to fully mix the components of step (1) to obtain a high-performance injection-molded permanent ferrite, which is then pelletized to obtain an average particle size of 2...

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PUM

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Abstract

The invention discloses a rotor magnetic ring of a high-efficiency micromotor and a manufacturing method of the rotor magnetic ring. The rotor magnetic ring is made by ferrite magnetic powder, poly (1,9-nonyl para-phenylene diamide), polylaurolactam, nylon 6 or clay nano composite and oleic acid through injection molding. Optimal constitutional raw materials and an optimal using quantity ratio are acquired through a lot of experiment screening study; by the rotor magnetic ring manufactured by the method, mass of a motor rotor can be reduced, weight of the whole motor can be reduced, efficiency of the motor is improved, the motor is lower in noise, higher in running frequency and large in pulling-out torque, a major breakthrough on mass of the motor is made, and remarkable technological progress is made.

Description

Technical field [0001] The invention relates to a high-efficiency micro-motor, in particular to a new material motor rotor magnetic ring and a preparation method thereof. Background technique [0002] With the environmental requirements of energy saving and environmental protection and the development of high technology, the whole machine products of micromotors are developing in the direction of "lightweight, high efficiency, low noise and low cost". This puts forward higher requirements for the design and manufacture of micromotors. The design and manufacture of the rotor, the core component of the micromotor, is particularly important. At present, the rotor is mainly manufactured by injection molding, which can form various products with complex shapes at one time. Products with dimensional accuracy that meet the basic requirements can be obtained without post-processing. Products with complex shapes can be prepared and continuous mass production can be automated. Meet the g...

Claims

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Application Information

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IPC IPC(8): H02K1/22H02K1/02H02K15/02
CPCH02K1/02H02K1/27H02K15/03
Inventor 袁铁军赵殿合郑雷王小强朱卫东
Owner JIANGSU LEILI MOTOR
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