Method for manufacturing injection mold of stator for motor and injection mold for stator for motor
A manufacturing method and injection mold technology are applied in the field of the manufacture of injection molds for motor stators and the fields of injection molds for motor stators, which can solve problems such as wear of the main body of the injection mold, and achieve wear suppression, improved adhesion, and fatigue strength. improved effect
Pending Publication Date: 2021-05-11
TOYO DENKI SEIZO KK
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Problems solved by technology
[0005] Therefore, when the main body of the injection mold is inserted into the core, or when the motor stator is taken out of the injection mold after molding, the outer peripheral surface of the main body of the injection mold will be in contact with the inner peripheral part of the core or At least one part of the inner peripheral portion of the cured insulating resin rubs against the main body of the injection mold
Therefore, the conventional injection molds for stators for motors cannot sufficiently withstand repeated use.
Method used
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[0017] refer to figure 1 , the injection mold 1 of the motor stator of the present embodiment will be described. The injection mold 1 is a hollow mold and includes a long cylindrical body portion 11 and a flange portion 12 extending outward from one end in the longitudinal direction of the body portion 11 . After molding, a coolant such as air flows through the hollow portion 1 a of the injection mold 1 , and the stator for a motor can be cooled together with the injection mold 1 by the coolant.
[0018] Both the main body portion 11 and the flange portion 12 of the injection mold 1 are made of metal, and can be integrally molded by, for example, aluminum die-casting. Additionally, as in figure 1 The outer peripheral surface 11a of the main body part 11 is subjected to shot blasting as shown in the dotted line circle in . Shot peening is a metal processing method in which a plurality of balls made of metal or the like collide with the surface of a metal product at high spee...
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The invention provides a method for manufacturing an injection mold of a stator for a motor and injection mold of the stator for the motor. An injection mold (1) used for molding a stator for a motor can be repeatedly used and is provided with: a core portion formed by laminating a plurality of annular electromagnetic steel sheets; and a coil wound around a plurality of slots formed at predetermined intervals in an inner peripheral portion of the core portion. The stator for the motor is molded by injecting an insulating resin into at least a gap between the core portion and the coil and curing the insulating resin. The injection mold (1) is provided with: a long main body portion (11); and a flange portion (12) extending outward from one end in the longitudinal direction of the main body portion (11), the outer peripheral surface (11a) of the main body portion (11) of the injection mold (1) being subjected to shot peening, and then being subjected to electroless plating.
Description
technical field [0001] The present invention relates to a method of manufacturing an injection mold (model) of a stator for a motor used for molding (molding) of a stator for a motor described below, and a product manufactured by the manufacturing method. An injection mold of a stator for a motor, that is, the stator for a motor includes a core formed by laminating a plurality of ring-shaped electrical steel sheets, and an inner peripheral portion wound around the core formed at predetermined intervals. For the motor stator, the coils with the plurality of slots are molded by injecting an insulating resin into at least a gap between the core and the coils, and curing the resin. Background technique [0002] Conventionally, it is well known that when molding a stator for a motor, an injection mold having a long main body and a flange extending outward from one end in the longitudinal direction of the main body is used (for example, refer to Patent Document 1 ). [0003] Whe...
Claims
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IPC IPC(8): H02K15/12
CPCH02K15/12Y02T10/64
Inventor 藤原谦二冈本吉弘大场宏明岩本友也冈本协司
Owner TOYO DENKI SEIZO KK