New energy electric vehicle drive shell mold cavity

Abstract

The utility model provides a new energy electric vehicle drive casing mould cavity relates to new energy electric vehicle drive casing's casting mould technical field, including mould main part, the top of mould main part is equipped with two split gates, the inside of mould main part is equipped with the cavity main part in one side of two split gates, the both sides of the cavity main part in mould main part are equipped with overflow groove, the one side of the cavity main part in mould main part is equipped with exhaust system. The improvement of traditional extrusion casting mould one mould one cavity, adopt the design of many split gates, compared with the advantage of single internal flow channel is to make molten metal as possible more uniform delivery to each gate, the liquid that flows into the metal cavity is as possible big, flows smoothly. Under the condition of satisfying the forming requirement of casting, improve the productivity, adopt the design of tubular inner gate fully consider the shape characteristics and forming capacity factors of the part, thereby obtain high performance, high quality casting.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology for drive unit housings of new energy electric vehicles, and particularly to mold cavities for drive unit housings of new energy electric vehicles. Background Technology

[0002] As the core load-bearing component of the motor, the drive unit housing of new energy electric vehicles has a complex structure (including multiple sets of mounting holes, heat dissipation fins and irregularly shaped cavities). It has extremely high requirements for dimensional accuracy (tolerance ±0.05mm), internal density (no porosity or shrinkage) and production efficiency. The extrusion casting process can achieve directional filling and feeding of molten metal under high pressure, which improves the density of the casting, greatly increases the tensile strength, and requires no subsequent processing after one-time molding.

[0003] Currently, the mold cavity for the drive unit housing of new energy electric vehicles in existing technologies requires multiple machining processes in traditional sand casting, resulting in low material utilization and insufficient casting strength. Although the existing ordinary die casting process is highly efficient, it is prone to producing subcutaneous porosity, which cannot meet the pressure-bearing performance requirements of the housing. Utility Model Content

[0004] The present invention provides a mold cavity for the drive unit housing of a new energy electric vehicle that solves the problems of low molding accuracy, insufficient efficiency and casting defects in existing processes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mold cavity for a new energy electric vehicle drive unit housing, comprising a mold body, two sprue gates at the top of the mold body, a cavity body inside the mold body located on one side of the two sprue gates, overflow grooves on both sides of the cavity body inside the mold body, and an exhaust system inside the mold body located on one side of the cavity body.

[0006] Preferably, a sprue sleeve is installed at one end of the mold body, and one end of the sprue sleeve is connected to two sub-sprues.

[0007] Preferably, the lower end of the main sprue and the sprue sleeve are connected by an arc transition, and the two sprues are symmetrically distributed within the mold body.

[0008] Preferably, the ends of the two sprues furthest from the sprue sleeve are connected to the inner sprue at the bottom of the cavity body.

[0009] Preferably, a portion of the overflow channel within the overflow channel is connected to the exhaust channel within the exhaust system.

[0010] Preferably, the mold body has connection holes at all four corners.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] This invention improves upon the traditional single-cavity extrusion casting mold by employing a multi-sprue design. Compared to a single internal runner, this design allows for the more even and comprehensive delivery of molten metal to each gate, maximizing the amount of liquid flowing into the metal cavity and ensuring smooth flow. This increases productivity while meeting the casting's formability requirements. Furthermore, the use of a tubular ingate design fully considers the part's shape characteristics and forming capacity, resulting in high-performance, high-quality castings. The mold runner system consists of multiple sub-runners, with the lower end connected to the main runner within the sprue sleeve and the upper end connected to the main cavity body. The ingate at the connection point with the main cavity body is a tubular ingate. This design combines the part's annular structural characteristics with the casting's filling capacity. Attached Figure Description

[0013] Figure 1 This utility model presents a top view of the mold cavity for the drive unit housing of a new energy electric vehicle.

[0014] Illustrations: 1. Sprue bushing; 2. Runner; 3. Cavity body; 4. Overflow groove; 5. Venting system; 6. Mold body; 7. Connecting hole. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example 1, such as Figure 1 As shown, this utility model provides a mold cavity for a drive unit housing of a new energy electric vehicle, including a mold body 6. Two sprue gates 2 are opened at the top of the mold body 6. A cavity body 3 is opened on one side of the two sprue gates 2 inside the mold body 6. Overflow grooves 4 are opened on both sides of the cavity body 3 inside the mold body 6. An exhaust system 5 is provided on one side of the cavity body 3 inside the mold body 6.

[0018] The overall effect of embodiment 1 is that the mold body 6 of this device is a single mold with one cavity, and adopts a multi-sprue design 2. Compared with a single internal runner, the advantage is that the molten metal is delivered to each gate as evenly as possible, and the liquid flowing into the metal cavity is as large as possible, thereby improving productivity. The mold runner is composed of multiple sub-sprues 2, with the lower end connected to the main runner in the sprue sleeve 1 and the upper end connected to the cavity body 3. The ingate at the connection with the cavity body 3 adopts a pipe ingate. This design combines the annular structural characteristics of the part with the filling capacity of the casting.

[0019] Example 2, as Figure 1 As shown, a sprue sleeve 1 is installed at one end of the mold body 6. One end of the sprue sleeve 1 is connected to two sub-sprues 2. The main run of the sub-sprue 2 and the lower end of the sprue sleeve 1 are connected by an arc transition. The two sub-sprues 2 are symmetrically distributed in the mold body 6. The ends of the two sub-sprues 2 away from the sprue sleeve 1 are connected to the inner gate at the bottom of the cavity body 3. Part of the overflow groove in the overflow groove 4 is connected to the venting groove in the venting system 5. Connection holes 7 are opened at all four corners of the mold body 6.

[0020] The effect achieved by the entire embodiment 2 is that the mold runner is composed of multiple sub-runners 2, the lower end of which is connected to the main runner in the sprue sleeve 1, and the upper end is connected to the cavity body 3. The ingate at the connection with the cavity body 3 adopts a pipe ingate. This design combines the annular structural characteristics of the part with the filling capacity of the casting. The connection hole 7 facilitates docking with other molds.

[0021] Working Principle: The mold body 6 of this device is a single-cavity mold with a multi-sprue design 2. Compared with a single internal runner, this design allows for the more even distribution of molten metal to each gate, maximizing the amount of liquid flowing into the metal cavity and improving productivity. The mold runner consists of multiple sub-sprues 2, with the lower end connected to the main runner inside the sprue sleeve 1 and the upper end connected to the cavity body 3. The ingate at the connection with the cavity body 3 is a tubular ingate. This design combines the annular structural characteristics of the part with the filling capacity of the casting. It is an improvement over the traditional single-cavity extrusion casting mold, employing a multi-sprue design 2. Compared with a single internal runner, this design allows for the more even distribution of molten metal to each gate, maximizing the amount of liquid flowing into the metal cavity and ensuring smooth flow. It improves productivity while meeting the casting formability requirements. Furthermore, the tubular ingate design fully considers the shape characteristics and forming capacity of the part, thus obtaining high-performance, high-quality castings.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A mold cavity for a drive unit housing of a new energy electric vehicle, comprising a mold body (6), characterized in that: The top of the mold body (6) has two sprue channels (2), and a cavity body (3) is provided inside the mold body (6) on one side of the two sprue channels (2). An overflow groove (4) is provided inside the mold body (6) on both sides of the cavity body (3). An exhaust system (5) is provided inside the mold body (6) on one side of the cavity body (3).

2. The mold cavity for the drive unit housing of a new energy electric vehicle according to claim 1, characterized in that: One end of the mold body (6) is equipped with a sprue sleeve (1), and one end of the sprue sleeve (1) is connected to two sub-sprue channels (2).

3. The mold cavity for the drive unit housing of a new energy electric vehicle according to claim 2, characterized in that: The main runner (2) and the lower end of the sprue sleeve (1) are connected by an arc transition, and the two runners (2) are symmetrically distributed in the mold body (6).

4. The mold cavity for the drive unit housing of a new energy electric vehicle according to claim 2, characterized in that: The ends of the two sprues (2) away from the sprue sleeve (1) are connected to the bottom inner gate of the cavity body (3).

5. The mold cavity for the drive unit housing of a new energy electric vehicle according to claim 1, characterized in that: The overflow trough (4) is partially connected to the exhaust trough in the exhaust system (5).

6. The mold cavity for the drive unit housing of a new energy electric vehicle according to claim 1, characterized in that: The mold body (6) has connection holes (7) at all four corners.

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