CN213937686U

CN213937686U - Cast aluminum forming die and motor rotor

Info

Publication number: CN213937686U
Application number: CN202022575621.6U
Authority: CN
Inventors: 李文彬; 吴望雄; 尹华林; 郑长学
Original assignee: Yinlong New Energy Co Ltd
Current assignee: Yinlong New Energy Co Ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-08-10
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a cast aluminium forming die for rotor core, including the mold core body, the through-hole has been seted up at the middle part of mold core body, and the bottom surface of mold core body is formed with aluminium ring shaping die cavity, and it has aluminium liquid to advance the runner to link up on the aluminium ring shaping die cavity to make cast aluminium forming die and rotor core cooperation accomplish the shaping of rotor core aluminium ring. The utility model also discloses a motor rotor, including rotor core, set up on the rotor core and be used for the cast aluminium forming die as above of cast aluminium ring. The utility model discloses a cast aluminium forming die and electric motor rotor have following advantage: by means of the forming mode that the aluminum liquid inlet gate is arranged below the end face of the aluminum ring, the formation of a convex inlet gate on the end face after the aluminum ring is formed is avoided, the purpose that the end face of the aluminum ring is not provided with the inlet gate is achieved, a gate pressing process is omitted, production efficiency is improved, and production cost is reduced.

Description

Cast aluminum forming die and motor rotor

Technical Field

The utility model relates to an electric motor rotor casts aluminium technical field, in particular to cast aluminium forming die and electric motor rotor.

Background

The motor rotor iron core of the household fan and the air conditioner indoor unit needs to be cast with aluminum at two ends of the rotor iron core to form aluminum rings in the production and manufacturing process. The aluminum ring has a gate salient point in the aluminum casting process, so that a press gate needs to be further processed. The process of flattening the pouring gate increases the personnel cost and the input cost of production equipment, and reduces the production efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cast aluminium forming die and electric motor rotor solves the technical problem who mentions in the background art.

In order to achieve the above object, the utility model discloses a cast aluminium forming die and electric motor rotor's concrete technical scheme as follows:

the utility model provides a cast aluminium forming die for rotor core, includes the mold core body, and the through-hole has been seted up at the middle part of mold core body, and the bottom surface of mold core body is formed with aluminium ring shaping die cavity, and it has aluminium liquid to advance the runner to link up on the aluminium ring shaping die cavity to make cast aluminium forming die and rotor core cooperation accomplish the shaping of rotor core aluminium ring.

Further, the shape of the molten aluminum inlet gate is set to be conical, and the opening close to the aluminum ring molding cavity is smaller than the opening on the end face of the mold core body.

Further, the bottom opening of the aluminum liquid inlet gate is communicated with the aluminum ring molding cavity, so that the aluminum liquid flowing from the aluminum liquid inlet gate flows to the rotor core.

Further, the aluminum ring molding cavity is divided into two parts by the through hole, wherein a groove is arranged on one part of the aluminum ring molding cavity, and two opposite side walls of the groove are inclined planes.

Furthermore, the included angle formed by the inclined plane and the bottom surface of the groove is an obtuse angle.

Further, the bottom edge of the molten aluminum inlet gate extends to the aluminum ring molding cavity.

Further, the material of the cast aluminum forming die is medium-carbon high-chromium alloy tool steel.

A motor rotor comprises a rotor core, wherein the rotor core is provided with the cast aluminum forming die for casting an aluminum ring.

Further, a gate is arranged on the rotor core, and the opening end face of the molten aluminum gate on the aluminum ring molding cavity is arranged below the opening end face of the gate.

Further, the top surface of the rotor core is cast to form a first aluminum ring, and the bottom surface of the rotor core is cast to form a second aluminum ring.

The utility model discloses a cast aluminium forming die and electric motor rotor have following advantage: by means of the forming mode that the aluminum liquid inlet gate is arranged below the end face of the aluminum ring, the formation of a convex inlet gate on the end face after the aluminum ring is formed is avoided, the purpose that the end face of the aluminum ring is not provided with the inlet gate is achieved, a gate pressing process is omitted, production efficiency is improved, and production cost is reduced.

Drawings

Fig. 1 is a schematic structural view of a motor rotor of the present invention;

FIG. 2 is a schematic view of the structure of the aluminum casting mold core of the present invention;

fig. 3 is a partially enlarged view of a portion I in fig. 2.

Description of reference numerals: 1. a rotor core; 11. a first aluminum ring; 111. a gate is arranged; 112. a bevel; 12. a second aluminum ring; 2. casting an aluminum forming mold core; 21. and the aluminum liquid enters the pouring gate.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model provides a cast aluminum forming die for rotor core 1, including the mold core body, the through-hole has been seted up at the middle part of mold core body, and the bottom surface of mold core body is formed with aluminium ring shaping die cavity, and it has aluminium liquid to advance runner 21 to link up on the aluminium ring shaping die cavity to make cast aluminum forming die and the shaping of rotor core 1 aluminium ring is accomplished in the cooperation of rotor core 1.

In the prior art, when the rotor core 1 is used for casting and molding an aluminum ring, aluminum liquid flows into the other end of the rotor from one end of the rotor, and an upward convex gate 111 is generally left on the end surface of the aluminum ring at the gate in the process of molding the aluminum ring, so that the gate 111 needs to be removed, and the gate 111 is flattened.

The core body is placed on the rotor core 1 at the time of assembly for use.

As shown in FIG. 3, the molten aluminum inlet gate 21 is tapered, and the opening close to the aluminum ring molding cavity is smaller than the opening of the end face of the mold core body.

The bottom opening of the aluminum liquid inlet gate 21 is communicated with the aluminum ring molding cavity, so that the aluminum liquid flowing from the aluminum liquid inlet gate 21 flows to the rotor core 1.

The aluminum ring forming cavity is divided into two parts by the through hole, wherein a groove is arranged on one part of the aluminum ring forming cavity, two opposite side walls of the groove are inclined planes 112, and an included angle formed by the inclined planes 112 and the bottom surface of the groove is an obtuse angle.

The bottom edge of the aluminum liquid inlet gate 21 extends to the aluminum ring molding cavity, so that the aluminum liquid inlet gate 21 of the mold core body is arranged below the molding end surface of the aluminum ring.

The cast aluminum forming die is made of medium-carbon high-chromium alloy tool steel, has high hardness and wear resistance after heat treatment, has the characteristics of strong hardenability and good dimensional stability, and is suitable for manufacturing high-precision long-life cold-work dies and thermosetting forming plastic dies.

The utility model also provides an electric motor rotor, including rotor core 1, rotor core 1 is last to set up be used for the casting aluminium ring as above cast aluminium forming die.

The rotor core 1 is provided with an inlet gate 111, and the opening end surface of the molten aluminum inlet gate 21 on the aluminum ring molding cavity is arranged below the opening end surface of the inlet gate 111, so that the inlet gate 111 generated in the aluminum casting molding process is not protruded to the end surface of the aluminum ring.

The top surface casting of rotor core 1 forms first aluminium ring 11, and the bottom surface casting of rotor core 1 forms second aluminium ring 12, and rotor core 1 is when carrying out the cast aluminium shaping of aluminium ring, and aluminium liquid flows to second aluminium ring 12 department through rotor core 1 is inside from first aluminium ring 11 end, accomplishes the shaping of rotor core 1 both ends aluminium ring.

The utility model provides an electric motor rotor, when carrying out cast aluminium shaping, aluminium liquid passes through rotor core 1 inside from the shaping die cavity of first aluminium ring 11, and the shaping of 1 both ends aluminium ring of rotor core is accomplished to the shaping die cavity of second aluminium ring 12 to the refluence. The end surface of the aluminum ring will not form the inlet gate 111 protruding from the end surface, thereby achieving the purpose of eliminating the process of pressing the inlet gate 111.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a cast aluminium forming die for rotor core (1), its characterized in that, includes the mold core body, and the through-hole has been seted up at the middle part of mold core body, and the bottom surface of mold core body is formed with aluminium ring shaping die cavity, and it has aluminium liquid to advance runner (21) to link up on the aluminium ring shaping die cavity to make cast aluminium forming die and rotor core (1) cooperation accomplish rotor core (1) aluminium ring shaping.

2. The cast aluminum molding die according to claim 1, wherein the aluminum liquid inlet gate (21) is formed in a tapered shape, and an opening near the aluminum ring molding cavity is smaller than an opening of the end surface of the core body.

3. The aluminum casting mold according to claim 2, wherein the bottom surface of the aluminum liquid inlet gate (21) opens to communicate with the aluminum ring molding cavity, so that the aluminum liquid flowing from the aluminum liquid inlet gate (21) flows to the rotor core (1).

4. The aluminum casting mold according to claim 1, wherein the aluminum ring forming cavity is divided into two parts by the through hole, wherein a groove is formed in one part of the aluminum ring forming cavity, and two opposite side walls of the groove are provided with inclined surfaces (112).

5. The cast aluminum forming die according to claim 4, wherein the included angle formed by the inclined surface (112) and the bottom surface of the groove is an obtuse angle.

6. The cast aluminum forming mold according to claim 5, wherein the bottom edge of the aluminum liquid inlet gate (21) extends to the aluminum ring forming cavity.

7. The cast aluminum forming die of claim 1, wherein the cast aluminum forming die is made of medium carbon high chromium alloy tool steel.

8. An electric machine rotor comprising a rotor core (1), characterized in that the rotor core (1) is provided with a cast aluminium forming mould according to any one of claims 1-7 for casting an aluminium ring.

9. The electric machine rotor according to claim 8, characterized in that the rotor core (1) is provided with an inlet gate (111), and the opening end surface of the aluminum liquid inlet gate (21) on the aluminum ring molding cavity is arranged below the opening end surface of the inlet gate (111).

10. An electric machine rotor according to claim 9, characterized in that the top surface of the rotor core (1) is cast to form a first aluminium ring (11) and the bottom surface of the rotor core (1) is cast to form a second aluminium ring (12).