Middle mold exhaust structure of die-casting mold for cast-aluminum rotor core of electric motor

A technology of cast aluminum rotor and motor, applied in the field of motor manufacturing, can solve problems such as poor mold exhaust

Inactive Publication Date: 2016-11-02
SHANDONG LIJIU SPECIAL PURPOSE ELECTROMOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of poor exhaust in the die-casting mold of the existing cast aluminum rotor, the invention provides a die-exhaust structure in the die-casting die of the cast aluminum rotor iron core of the motor

Method used

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  • Middle mold exhaust structure of die-casting mold for cast-aluminum rotor core of electric motor
  • Middle mold exhaust structure of die-casting mold for cast-aluminum rotor core of electric motor

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the drawings:

[0009] It can be seen from the drawings that the present invention is a middle mold exhaust structure of a die-casting mold for a cast aluminum rotor iron core for an electric motor. The exhaust passage is composed of a middle mold jacket 4 and a middle mold exhaust lining 3, and is characterized by: The mold exhaust lining 3 is composed of several pieces with dovetail grooves and arc-shaped strips that can be closely attached to the middle mold jacket 4 through the dovetail grooves. The gap between the middle mold exhaust lining 3 and the upper and lower sides of the middle mold jacket 4 The upper and lower exhaust passages 6 of the middle mold together form an exhaust passage on the inner wall of the middle mold.

[0010] When the die-casting machine piston pushes the molten aluminum into the lower mold 1, the molten aluminum flows along the rotor core 5 to the upper mold, pushing the...

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Abstract

The invention relates to a middle mold exhaust structure of a die-casting mold for a cast-aluminum rotor core of an electric motor. The middle mold exhaust structure consists of a middle mold jacket and a middle mold exhaust liner. The middle mold exhaust structure is characterized in that the middle mold exhaust liner consists of a plurality of arc-shaped strips, and each of the arc-shaped strips is provided with a dovetail groove and the arc-shaped strips can be closely attached to the middle mold jacket through the dovetail grooves; and gaps in the middle mold exhaust liner, a middle mold upper exhaust passage at the upper part of the middle mold jacket and a middle mold lower exhaust passage at the lower part of the middle mold jacket jointly form a middle mold inner wall exhaust passage. According to the middle mold exhaust structure disclosed by the invention, the middle mold inner wall exhaust passage is designed, so that air between a middle mold inner wall and a rotor core can be exhausted in time.

Description

Technical field [0001] The invention relates to the field of motor manufacturing, in particular to an exhaust structure on the middle mold of the aluminum rotor core die-casting mold of a vertical die-casting machine. Background technique [0002] At present, the quality of die-casting die-casting of domestic cast aluminum rotor die-casting has always been a big problem. The exhaust method basically adopts the top die top aluminum fan blade and the top end of the balance column annular shallow groove exhaust program, the middle die part except the part that contacts the upper and lower die There are several exhaust grooves, and there is no other exhaust structure in the middle part. Because die-casting is cold-chamber die-casting, the mold temperature is low. In order to prevent the rotor core from being heated and expanded, there is a gap between the middle mold and the rotor core. When die-casting, the aluminum liquid is injected from the rotor core aluminum slot and flows int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/22
CPCB22D17/22
Inventor 张成王毅
Owner SHANDONG LIJIU SPECIAL PURPOSE ELECTROMOTOR CO LTD
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