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Three-phase permanent magnet synchronous motor for injection molding

A permanent magnet synchronous and motor technology, applied in synchronous machines, electric components, magnetic circuit rotating parts, etc., can solve the problems of low efficiency of injection molding machines, and achieve the effect of eliminating electromagnetic noise and low noise

Active Publication Date: 2019-04-26
浙江创新电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above, the present invention provides a three-phase permanent magnet synchronous motor for injection molding, which can solve the problem of low efficiency of the injection molding machine during the entire working cycle, especially when it is light-loaded and no-loaded.

Method used

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  • Three-phase permanent magnet synchronous motor for injection molding
  • Three-phase permanent magnet synchronous motor for injection molding
  • Three-phase permanent magnet synchronous motor for injection molding

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Embodiment Construction

[0043] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] Such as figure 1 As shown, the three-phase permanent magnet synchronous motor of the present invention consists of a stator, a rotor, a front end cover 4, a rear end cover 12, a fan 16, a windshield 14, a bearing 3, a support ring 1, a wave spring 15 for a shaft, a suspension ring 8 and a tightening Screws 9 etc., wherein the stator consists of a machine base 5 and a winding stator core 11, and the winding stator core 11 includes the stator core and the coil winding embedded in its slot. The rotor consists of a rotating shaft 2 and a cast aluminum rotor 6 equipped with magnetic steel 10 . A magnetic steel pressure plate 13 is arranged on both ends of the magnetic steel 10, and is locked and pressed firmly by the screw rod 7; a front end cover 4 an...

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Abstract

The invention discloses a three-phase permanent magnet synchronous motor for injection molding. According to the three-phase permanent magnet synchronous motor, a permanent magnet is installed in a rotor and squirrel cage guide bar, end ring, fan blade and balance column structures are designed for asynchronous starting, control drive devices such as a frequency converter do not need to be added,a traditional three-phase asynchronous motor of the same specification can completely replaced, and the problem of low efficiency of an injection molding machine during a whole operating period, especially during light load and no-load operation are solved; and meanwhile, the three-phase permanent magnet synchronous motor adopts the measures that single-and-double-layer unequal-turn low harmonic windings are adopted to greatly reduce the high harmonic content except tooth harmonic, the tooth harmonic is reduced by being matched with a skewed stator slot and an air gap between a stator and a rotor is appropriately increased to further eliminate the unilateral magnetic tension noise caused by the decentraction of the stator and the rotor, so that the motor has low noise throughout the operating period, and especially eliminates the harsh electromagnetic noise during overload, and the motor noise is lower than the Chinese national standard requirements of 5-10dB (A).

Description

technical field [0001] The invention belongs to the technical field of injection molding and motors, and in particular relates to a three-phase permanent magnet synchronous motor for injection molding. Background technique [0002] Plastic industry is an important industry in modern industry. Plastic molding processing is widely used in various fields of industry, agriculture, national defense and people's daily life. Injection molding has the characteristics of fast production cycle, high production efficiency, the ability to form products with precise dimensions and complex shapes, and easy automation, so it occupies a very important position in the entire plastic product industry. [0003] Injection molding is a method of injecting the material into the mold after thermal melting, cooling and plasticizing to obtain a molded product, and the injection molding machine is the equipment that completes this process. Injection molding machine is a typical system that integrate...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K21/46H02K3/12H02K5/20H02K9/06
CPCH02K1/274H02K3/12H02K5/20H02K9/06H02K21/46
Inventor 余海刚池中伟林鑫煜王友刚金海英
Owner 浙江创新电机有限公司
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