阅读说明：本技术 一种新能源电动汽车控制器壳体铸造模具及其工作方法 (New energy electric automobile controller shell casting mold and working method thereof ) 是由 季石华 罗文明 于 2019-11-29 设计创作，主要内容包括：本发明涉及一种新能源电动汽车控制器壳体铸造模具及其工作方法,上模芯安装在上模板下面,下模芯安装在下模座上面；一号固定下模块、一号滑块、二号固定下模块和二号滑块安装在下模座上,绕下模芯的轴线依次首尾拼接形成一个与控制器壳体外周形状一致的、密封的成型腔体,二号冷却通道成型用砂芯呈阶梯状柱形件,一端搭接在一号冷却通道成型用砂芯,另一端搭接在一号固定下模块上；一号冷却通道成型用砂芯用于形成控制器壳体底面内部的空间,二号冷却通道成型用砂芯用于形成控制器壳体底面内部的空间与外部连通的通道；上模板上面安装有风冷组件,该风冷组件用于对上模芯进行冷却。本模具结构设计合理、成本低、铸件质量好。(The invention relates to a new energy electric automobile controller shell casting die and a working method thereof.A lower die core is arranged below an upper die plate, and a lower die core is arranged above a lower die base; the first fixed lower module, the first sliding block, the second fixed lower module and the second sliding block are arranged on the lower die base, and are sequentially spliced end to end around the axis of the lower die core to form a sealed molding cavity consistent with the outer periphery of the controller shell in shape; the first cooling channel molding sand core is used for forming a space inside the bottom surface of the controller shell, and the second cooling channel molding sand core is used for forming a channel for communicating the space inside the bottom surface of the controller shell with the outside; the upper die plate is provided with an air cooling assembly, and the air cooling assembly is used for cooling the upper die core. The die has the advantages of reasonable structural design, low cost and good casting quality.)

1. The utility model provides a new forms of energy electric automobile controller casing casting mould which characterized in that: the device comprises a lower die holder (1), an upper die plate (2), an upper die core (3), a lower die core (4), a first cooling channel molding sand core (5), a second cooling channel molding sand core (10), a first fixed lower die block (6), a second fixed lower die block (7), a first sliding block (8) and a second sliding block (9); the upper mold core (3) is arranged below the upper mold plate (2), and the lower mold core (4) is arranged above the lower mold base (1); the first fixed lower module (6), the first sliding block (8), the second fixed lower module (7) and the second sliding block (9) are installed on the lower die base (1), and are sequentially spliced end to end around the axis of the lower die core (4) to form a sealed molding cavity consistent with the outer periphery of the controller shell in shape, a protruding structure is arranged on the inner side surface of the first sliding block (8) and used for forming a power supply socket on the controller shell, and the second sliding block (9) is used for forming an indicator lamp hole on the controller shell; when the die is closed, the upper die plate (2) covers the first fixed lower die block (6), the first sliding block (8), the second fixed lower die block (7) and the second sliding block (9), and the upper die core (3) is positioned in the forming cavity; the first cooling channel molding sand core (5) is sheet-shaped, is arranged on the lower die base (1), and is positioned between the bottom surface of the upper die core (3) and the inner wall of the bottom surface of a molding cavity formed by the first fixed lower die block (6), the first sliding block (8), the second fixed lower die block (7) and the second sliding block (9); the second cooling channel forming sand core (10) is a stepped cylindrical part, one end of the second cooling channel forming sand core is lapped on the first cooling channel forming sand core (5), and the other end of the second cooling channel forming sand core is lapped on the first fixed lower module (6); the first cooling channel molding sand core (5) is used for forming a space inside the bottom surface of the controller shell, and the second cooling channel molding sand core (10) is used for forming a channel for communicating the space inside the bottom surface of the controller shell with the outside; and an air cooling assembly (11) is arranged on the upper template (2), and the air cooling assembly (11) is used for cooling the upper mold core (3).

2. The casting mold for the new energy electric automobile controller shell according to claim 1, characterized in that: the pushing structure comprises a lock template (15), a supporting plate (14), an upper top plate (16), a push rod mounting plate (12) and a push rod (13); the two support plates (14) are L-shaped and are vertically and oppositely arranged on the upper template (2); the lock template (15) is arranged on the two support plates (14); the upper top plate (16) is connected with the ejector rod mounting plate (12) and can be vertically positioned between the lock template (15) and the upper template (2); the ejector push rods (13) are arranged on the ejector push rod mounting plate (12), a plurality of ejector push rods (13) are arranged at positions of the castings, which are easy to clamp the mold, and the lower ends of the ejector push rods (13) penetrate through the upper module (2); when the upper top plate (16) and the ejector rod mounting plate (12) move downwards to the lowest position, the upper top plate and the ejector rod mounting plate are limited and supported by the support plate (14).

3. The casting mold for the new energy electric automobile controller shell according to claim 1, characterized in that: the sand core (5) for molding the first cooling channel and the sand core (10) for molding the second cooling channel are both made of quartz sand and resin binder.

4. The casting mold for the new energy electric automobile controller shell according to claim 1, characterized in that: four sprue channels (17) are arranged on the lower die base (1), and the sprue channels (17) are communicated and connected with the lower die core (4).

5. The casting mold for the new energy electric automobile controller shell according to claim 1, characterized in that: the second sliding block (9) is connected with a core-pulling mechanism (18), and the core-pulling mechanism (18) is driven by an oil cylinder (19).

6. The casting mold for the new-energy electric automobile controller shell according to claim 4, characterized in that: the upper surface of the lower mold core (4) is provided with a feeding groove channel (41), the feeding groove channel (41) is connected with a sprue channel (17), the lower mold core (4) is further provided with four exhaust holes (42), and exhaust plugs are arranged in the exhaust holes (42).

7. The working method of the casting mold for the new energy electric automobile controller shell according to any one of claims 1 to 6, characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: mounting a lower mold core (4) on a lower mold base (1);

step two: a first fixed lower module (6) and a second fixed lower module (7) are installed on a lower die base (1), then a first cooling channel forming sand core (5) is installed on the lower die base (1), then the second cooling channel forming sand core (10) is installed on the first cooling channel forming sand core (5) in a lap joint mode, and the other end of the second cooling channel forming sand core is installed on the first fixed lower module (6) in a lap joint mode;

step three: the upper die power device moves the upper die plate (2) downwards and is matched and clamped with the first fixed lower die block (6) and the second fixed lower die block (7);

step four: the first sliding block (8) is pushed to a position between the upper template (2) and the lower die holder (1) by a sliding block power mechanism and is folded with the first fixed lower module (6) and the second fixed lower module (7); the second sliding block (9) is pushed to a position between the upper template (2) and the lower die holder (1) by the core pulling mechanism (18) and is folded with the first fixed lower module (6) and the second fixed lower module (7);

step five: the holding furnace of the low-pressure casting machine is connected with a sprue channel (17), and liquid metal gradually enters a forming cavity of the controller shell under the action of pressure until casting and forming;

step six: after casting and forming, the air cooling assembly (11) works, the upper mold core (3) is cooled, after cooling is completed, the first sliding block (8) and the second sliding block (9) are pulled apart for demolding;

step seven: and the upper die power device moves the upper die plate (2) and the cast controller shell to a die-stripping position, and the pushing structure works to push the cast controller shell downwards so as to complete the die stripping of the controller shell and the upper die core (3).

Technical Field

The invention relates to the field of molds, in particular to a new energy electric automobile controller shell casting mold and a working method thereof.

Background

At present, new energy electric vehicles are greatly developed, an electric vehicle controller is one of core components of the electric vehicle and is used for controlling starting, stopping, running, speed and the like of the electric vehicle, the controller consists of a shell and an electronic device positioned in the shell, the shell plays a role in protecting, bearing and sealing the internal electronic device, most of the existing controller shells are made of metal materials through casting, the controller shells are complex in structure and many in curved surfaces, a connecting part is arranged on the controller shells, a power supply socket for plugging a power supply, an indicating lamp hole and the like, the difficulty is increased for the design of a casting mold, the existing casting mold is unreasonable in design, and therefore cavities, looseness and the like are easily generated in the controller shells, and the service life of the controller shells is seriously influenced. Accordingly, there is a need for improvements and optimizations to existing controller housing casting molds.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a casting mold for a new energy electric automobile controller shell with reasonable structural design and good product quality, and provides a working method thereof.

The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a new forms of energy electric automobile controller casing casting mould which characterized in that: the device comprises a lower die holder, an upper die plate, an upper die core, a lower die core, a sand core for forming a first cooling channel, a sand core for forming a second cooling channel, a first fixed lower module, a second fixed lower module, a first sliding block and a second sliding block; the upper mold core is arranged below the upper mold plate, and the lower mold core is arranged on the lower mold base; the first fixed lower module, the first sliding block, the second fixed lower module and the second sliding block are arranged on the lower die base and sequentially spliced end to end around the axis of the lower die core to form a sealed molding cavity which is consistent with the outer periphery of the controller shell in shape, a protruding structure is arranged on the inner side surface of the first sliding block and used for forming a power supply socket on the controller shell, and the second sliding block is used for forming an indicator lamp hole on the controller shell; when the die is closed, the upper die plate covers the first fixed lower die block, the first sliding block, the second fixed lower die block and the second sliding block, and the upper die core is positioned in the forming cavity; the first cooling channel molding sand core is sheet-shaped, is arranged on the lower die base and is positioned between the bottom surface of the upper die core and the inner wall of the bottom surface of a molding cavity formed by the first fixed lower die block, the first sliding block, the second fixed lower die block and the second sliding block; the second cooling channel molding sand core is a stepped cylindrical part, one end of the second cooling channel molding sand core is lapped on the first cooling channel molding sand core, and the other end of the second cooling channel molding sand core is lapped on the first fixed lower module; the first cooling channel molding sand core is used for forming a space inside the bottom surface of the controller shell, and the second cooling channel molding sand core is used for forming a channel for communicating the space inside the bottom surface of the controller shell with the outside; and the upper die plate is provided with an air cooling assembly, and the air cooling assembly is used for cooling the upper die core.

Preferably, the casting mold for the new energy electric automobile controller shell further comprises a pushing structure, wherein the pushing structure comprises a lock mold plate, a support plate, an upper top plate, a push rod mounting plate and a push rod; the two support plates are arranged in an L shape and are vertically and oppositely arranged on the upper template; the clamping plates are arranged on the two supporting plates; the upper top plate is connected with the ejector rod mounting plate and can be located between the lock template and the upper template in an up-down lifting mode; the ejector push rods are arranged on the ejector push rod mounting plate, the ejector push rods are arranged at the positions of the castings, which are easy to clamp the mold, and the lower ends of the ejector push rods penetrate through the upper mold block; when the upper top plate and the ejector rod mounting plate move downwards to the lowest position, the upper top plate and the ejector rod mounting plate are limited and supported by the supporting plate.

Preferably, the sand core for molding the first cooling channel and the sand core for molding the second cooling channel are both made of quartz sand and resin binder.

Preferably, the lower die base is provided with four sprue channels, and the sprue channels are communicated and connected with the lower die core.

Preferably, the second sliding block is connected with a core-pulling mechanism, and the core-pulling mechanism is driven by an oil cylinder.

Preferably, a feeding groove channel is arranged on the upper surface of the lower mold core and connected with one sprue channel, four exhaust holes are formed in the lower mold core, and exhaust plugs are arranged in the exhaust holes.

The invention also provides a working method of the casting mold for the new energy electric automobile controller shell, which comprises the following steps:

the method comprises the following steps: mounting the lower die core on a lower die base;

step two: the first fixed lower module and the second fixed lower module are installed on the lower die base, then the first cooling channel forming sand core is installed on the lower die base, the second cooling channel forming sand core is installed on the first cooling channel forming sand core in a lap joint mode, and the other end of the second cooling channel forming sand core is installed on the first fixed lower module in a lap joint mode;

step three: the upper die power device moves the upper die plate downwards and is matched and clamped with the first fixed lower die block and the second fixed lower die block;

step four: the first sliding block is pushed between the upper template and the lower die base by a sliding block power mechanism and is folded with the first fixed lower module and the second fixed lower module; the second sliding block is pushed between the upper template and the lower die base by the core pulling mechanism and is folded with the first fixed lower module and the second fixed lower module;

step five: the low-pressure casting machine holding furnace is connected with the sprue channel, and liquid metal gradually enters the controller shell forming cavity under the action of pressure until casting forming;

step six: after casting and forming, the air cooling assembly works to cool the upper die core, and after cooling is finished, the first sliding block and the second sliding block are pulled apart to be demoulded;

step seven: and the upper die power device moves the upper die plate and the cast controller shell to a die-stripping position, and the pushing structure works to push the cast controller shell downwards so as to complete the die stripping of the controller shell and the upper die core.

Compared with the prior art, the invention has the following advantages and effects: the die has reasonable structural design, low cost and good casting quality; a feeding groove channel is arranged on the upper surface of the lower mold core and can enhance the local feeding capacity of the middle area; the air cooling assembly is arranged at the upper mold core, so that the cooling effect is good and the efficiency is high.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic perspective view of a controller housing cast according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of another controller housing cast according to an embodiment of the present invention.

Fig. 3 is a schematic perspective view of an embodiment of the present invention.

Fig. 4 is a schematic perspective view of the upper mold half according to an embodiment of the present invention.

Fig. 5 is another perspective view of the upper mold half according to the embodiment of the present invention.

Fig. 6 is a schematic perspective view of a lower mold half according to an embodiment of the present invention.

Fig. 7 is a schematic top view of the structure of fig. 6.

FIG. 8 is a schematic diagram showing the configuration of the lower core with the feeding groove channels and the vent holes.

Fig. 9 is a schematic top view of the structure of fig. 8.

Description of reference numerals: the core-pulling device comprises a lower die holder 1, an upper die plate 2, an upper die core 3, a lower die core 4, a first cooling channel forming sand core 5, a second cooling channel forming sand core 10, an air cooling component 11, a first fixed lower die block 6, a second fixed lower die block 7, a first sliding block 8, a second sliding block 9, a pouring gate channel 17, a core-pulling mechanism 18, an oil cylinder 19, a die locking plate 15, a supporting plate 14, an upper top plate 16, a top push rod mounting plate 12, a top push rod 13, a feeding groove channel 41 and an exhaust hole 42.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.