New energy automobile driving motor cylinder die-casting die

Abstract

The utility model relates to die casting mould technical field, concretely relates to a new energy automobile drive motor cylinder body die casting mould for processing metal liquid into cylinder body ontology, including the fixed mould component of installing in the injection end of die casting machine, the movable mould component of installing in the movable end of die casting machine and the cavity component of setting between fixed mould component and movable mould component, the fixed mould component includes the fixed mould plate of installing in the injection end of die casting machine, install the core plate for shaping in the fixed mould plate, the cavity component includes four groups of movable cavity board, the cavity board and core plate form the cavity body for shaping, the movable mould component includes movable mould plate. The utility model's purpose lies in providing a new energy automobile drive motor cylinder body die casting mould, forms the cavity body through four cavity boards mobile splicing and core plate, to improve the precision of product.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, specifically a die-casting mold for a new energy vehicle drive motor cylinder block. Background Technology

[0002] Driven by both global energy structure transformation and tightening environmental policies, the new energy vehicle industry has experienced explosive growth. As the core power source of new energy vehicles, the drive motor's performance directly determines the vehicle's power output, driving range, and operational stability. The drive motor cylinder block, as the core load-bearing and protective component of the motor, must simultaneously meet multiple stringent requirements, including lightweight design, high strength, high airtightness, and excellent heat dissipation. Currently, drive motor cylinder blocks for new energy vehicles mostly use lightweight alloy materials such as aluminum alloys. Die casting, due to its advantages of high forming efficiency, good forming precision, and the ability to achieve integrated forming of complex structures, has become the mainstream processing method for mass production of motor cylinder blocks. The die casting mold, as the core equipment in the die casting process, directly affects the forming quality of the motor cylinder block, production efficiency, and the mold's own service life.

[0003] However, existing die-casting molds for new energy vehicle drive motor cylinder blocks still have many technical defects in practical applications, resulting in insufficient molding accuracy. Due to the high dimensional accuracy requirements of the cylinder block's cavity, heat dissipation channels, and other structural elements, the existing molds' cavity machining errors and improper control of mold closing clearances easily lead to dimensional deviations in the molded cylinder block. This necessitates additional machining, increasing production costs and time. Utility Model Content

[0004] The purpose of this utility model is to provide a die-casting mold for the cylinder block of a new energy vehicle drive motor, which forms a cavity with a core plate after four cavity plates are moved and spliced ​​together, thereby improving the precision of the product.

[0005] To address the existing technical problems, this utility model provides a die-casting mold for a new energy vehicle drive motor cylinder body, used to process molten metal into a cylinder body. It includes a fixed mold assembly installed at the injection end of a die-casting machine, a moving mold assembly installed at the movable end of the die-casting machine, and a cavity assembly disposed between the fixed mold assembly and the moving mold assembly. The fixed mold assembly includes a fixed template installed at the injection end of the die-casting machine, in which a core plate for forming is installed. The cavity assembly includes four sets of movable cavity plates, which, together with the core plates, form a cavity for forming. The moving mold assembly includes a moving template.

[0006] Preferably, the cavity assembly includes four supports mounted on the four sides of the moving template, and the supports have guide rails that enable the cavity plate to maintain linear motion, and the bottom of the cavity plate has a sliding groove that cooperates with the guide rails.

[0007] Preferably, the cavity assembly further includes a telescopic drive component mounted on the outside of the bracket, the output end of which is connected to one end of the cavity plate.

[0008] Preferably, the cavity assembly further includes a locking member slidably disposed in one of the supports, and the locking member is movable to contact the outer side of one of the cavity plates. The bottom of the fixed mold plate has an inclined guide post corresponding to the locking member, and the locking member has an inclined hole inside that cooperates with the inclined guide post. When the fixed mold assembly and the moving mold assembly are closed, the inclined guide post can be inserted into the inclined hole and the locking member can be moved to contact the outer side of one of the cavity plates.

[0009] Preferably, the cavity assembly further includes a guide for introducing molten metal into the cavity, mounted on one of the cavity plates, the guide having a flow guide hole, and the fixed mold plate having a gate, wherein the guide can be inserted into the gate when the fixed mold assembly and the moving mold assembly are closed.

[0010] Preferably, the fixed template has limiting holes at its four corners, and the top of the movable template has a limiting rod that cooperates with the limiting holes.

[0011] Preferably, the bottom of the moving template is fixed with two fixed seats at both ends, which can be installed on the moving end of the die casting machine. Between the two fixed seats is a push plate that can move up and down, and the push plate has a number of push rods that extend into the cavity.

[0012] Preferably, guide blocks are also provided on both sides of the bottom of the moving template to enable the push plate to maintain linear motion.

[0013] The advantages of this utility model compared to the prior art are: This application incorporates four movable cavity plates, which can move and connect under the drive of a telescopic drive component. Compared to traditional fixed cavity molds, the telescopic drive component can compensate for the connection gaps between the cavity plates. After the cavity plates are connected, the fixed mold assembly and the moving mold assembly perform a mold closing action, causing the core plate to be inserted into the cavity formed by the connection of the cavity plates, ultimately forming a complete molded cavity. This structure avoids the cylinder body dimensional deviation problems caused by the non-adjustable mold closing gap and rigid fixed cavity of traditional molds, reduces subsequent machining processes, lowers production costs, shortens the production cycle, and ensures the dimensional accuracy of key structures in the motor cylinder body. During the mold opening stage, the telescopic drive component drives the four cavity plates to separate synchronously, facilitating the subsequent removal of the product. During the mold closing process, the fixed mold assembly moves synchronously with the mold closing action, causing the inclined guide post to insert into the pre-set inclined hole of the locking component. Through the mechanical cooperation between the inclined guide post and the inclined hole, the cavity plate can be reliably locked, effectively limiting the displacement of the cavity plate caused by the impact of molten aluminum alloy during die casting and the thermal expansion and contraction of the mold. This avoids cavity deformation caused by the movement of the cavity plate, ensures the consistency of cylinder molding, reduces mold structural wear, and indirectly extends the service life of the mold. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a die-casting mold for a new energy vehicle drive motor cylinder.

[0015] Figure 2 This is an exploded structural diagram of a die-casting mold for a new energy vehicle drive motor cylinder block, according to this utility model.

[0016] Figure 3 This is a first three-dimensional structural schematic diagram of the fixed mold assembly of a die-casting mold for a drive motor cylinder of a new energy vehicle according to this utility model.

[0017] Figure 4 This is a second three-dimensional structural schematic diagram of the fixed mold assembly of a die-casting mold for a drive motor cylinder of a new energy vehicle according to this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the cavity component of a die-casting mold for a drive motor cylinder of a new energy vehicle according to this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the moving mold assembly of a die-casting mold for a drive motor cylinder block of a new energy vehicle, according to this utility model.

[0020] The numbers in the diagram are as follows: 1. Fixed mold assembly; 11. Fixed mold plate; 111. Gate; 112. Core plate; 113. Angled guide post; 114. Limiting hole; 2. Cavity assembly; 21. Cavity plate; 22. Bracket; 23. Telescopic drive component; 24. Locking component; 25. Guide component; 3. Moving mold assembly; 31. Moving mold plate; 311. Limiting rod; 32. Fixed seat; 33. Guide block; 34. Ejector plate; 35. Ejector rod; 4. Cylinder body. Detailed Implementation

[0021] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0022] Reference Figures 1-6 As shown, this utility model provides a die-casting mold for a new energy vehicle drive motor cylinder body, used to process molten metal into a cylinder body 4. It includes a fixed mold assembly 1 installed at the injection end of the die-casting machine, a moving mold assembly 3 installed at the movable end of the die-casting machine, and a cavity assembly 2 disposed between the fixed mold assembly 1 and the moving mold assembly 3. The fixed mold assembly 1 includes a fixed template 11 installed at the injection end of the die-casting machine, in which a core plate 112 for forming is installed. The cavity assembly 2 includes four sets of movable cavity plates 21, which together with the core plates 112 form a cavity for forming. The moving mold assembly 3 includes a moving template 31.

[0023] The fixed template 11 is the main structural component of the fixed mold assembly 1. On the one hand, it is used to achieve a rigid connection with the injection end of the die-casting machine to ensure the overall installation stability of the mold; on the other hand, it provides an installation benchmark and support for the core plate 112 to ensure the dimensional accuracy of the molding cavity. As a key molding component, the core plate 112 matches the internal cavity structure of the motor cylinder body 4. After the mold is closed, it is inserted into the cavity formed by the cavity assembly 2 to form the internal structure of the cylinder body 4, and directly determines the molding quality of the internal structure of the cylinder body 4.

[0024] The cavity assembly 2 includes four supports 22 mounted on the four sides of the moving mold plate 31. Each support 22 has a guide rail that allows the cavity plate 21 to maintain linear motion. The bottom of the cavity plate 21 has a groove that mates with the guide rail. The cavity assembly 2 also includes a telescopic drive member 23 mounted on the outside of the supports 22, with its output end connected to one end of the cavity plate 21. The cavity assembly 2 also includes a locking member 24 slidably disposed in one of the supports 22, capable of moving to contact the outside of one of the cavity plates 21. The bottom of the fixed mold plate 11 has an inclined guide post 113 corresponding to the locking member 24. The locking member 24 has an inclined hole that mates with the inclined guide post 113. When the fixed mold assembly 1 and the moving mold assembly 3 are closed, the inclined guide post 113 can be inserted into the inclined hole, causing the locking member 24 to move and contact the outside of one of the cavity plates 21.

[0025] Initially, the moving mold assembly 3 is in an open position away from the fixed mold assembly 1, along with the moving end of the die-casting machine. The four sets of cavity plates 21 are initially separated from the cavity center by the telescopic drive 23, and the grooves at the bottom of the cavity plates 21 maintain a sliding fit with the guide rails of the support 22. After the mold closing program is started, the telescopic drive 23 starts and outputs linear power. Its output end pushes the cavity plates 21 to move linearly along the guide rails of the support 22 towards the cavity center until the forming surfaces of the four sets of cavity plates 21 are joined, forming a cavity outer wall with a hollow structure, completing the pre-positioning of the cavity assembly 2. During this process, the cooperation between the guide rails and the grooves strictly limits the movement direction of the cavity plates 21 to avoid misalignment that could lead to excessive gaps. The moving end of the die-casting machine drives the moving template 31 of the moving mold assembly 3 to move towards the fixed mold assembly 1 until the moving template 31 and the fixed template 11 are rigidly fitted together, completing the overall mold closing. During this process, the core plate 112 on the fixed mold plate 11 is simultaneously inserted into the hollow structure formed by the cavity assembly 2 (after the four sets of cavity plates 21 are spliced ​​together). The core plate 112 and the forming surface of the cavity plate 21 form a closed cavity that is consistent with the structure of the cylinder body 4. At the same time, the inclined guide post 113 moves with the fixed mold assembly 1 and is inserted into the inclined hole of the locking member 24 to mechanically lock the cavity plate 21, so as to prevent the cavity plate 21 from being displaced along the guide rail due to the impact of molten metal during the subsequent injection process, and further ensure the stability of the cavity.

[0026] The cavity assembly 2 also includes a guide 25 mounted on one of the cavity plates 21 for introducing molten metal into the cavity. The guide 25 has a flow guide hole, and the fixed mold plate 11 has a gate 111. When the fixed mold assembly 1 and the moving mold assembly 3 are closed, the guide 25 can be inserted into the gate 111.

[0027] When the injection end of the die casting machine is started, the molten metal (such as aluminum alloy liquid) in a high temperature state is pressurized to the preset pressure and injected through the gate 111 of the fixed mold plate 11. Under the action of pressure, the molten metal enters the guide hole of the guide member 25 and flows smoothly into the closed cavity through the directional guidance of the guide hole. Since the inner wall of the guide hole is smooth and the cross-sectional size matches the cavity inlet, the molten metal can quickly fill all corners of the cavity under low resistance. After the molten metal fills the cavity, it is quickly cooled and solidified under the action of the mold cooling system (not mentioned but a standard configuration). At the same time, the molten metal remaining in the guide member 25 solidifies synchronously to form waste. Finally, the cylinder body 4 with the same cavity structure is formed inside the cavity.

[0028] The fixed template 11 has limiting holes 114 at its four corners, and the top of the movable template 31 has limiting rods 311 that mate with the limiting holes 114. Two fixed seats 32, which can be installed on the movable end of the die-casting machine, are fixed at both ends of the bottom of the movable template 31. Between the two fixed seats 32 is a push plate 34 that can move up and down, and the push plate 34 has several push rods 35 that extend into the mold cavity. Guide blocks 33, which enable the push plate 34 to maintain linear movement, are also provided on both sides of the bottom of the movable template 31.

[0029] An external power mechanism (such as the ejector cylinder of a die-casting machine) drives the ejector plate 34 to move along the guide blocks 33 on both sides of the bottom of the moving template 31. The ejector plate 34 drives the ejector rod 35 on it to move synchronously. The end of the ejector rod 35 contacts the preset demolding position of the cylinder body 4 and applies a pushing force. As the ejector rod 35 continues to move, the cylinder body 4 is ejected from the core plate 112. After the cylinder body 4 is completely separated, it is removed by a robotic arm or manually, completing one die-casting cycle. Subsequently, the ejector plate 34 is reset under the action of the return spring (which is generally present in molds, but not mentioned but is a standard configuration). The telescopic drive 23 drives the cavity plate 21 to reset to the initial separation position. The mold waits for the next mold closing procedure to realize the mass production of the cylinder body 4.

[0030] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A die-casting mold for a new energy vehicle drive motor cylinder block, used to process molten metal into a cylinder block body (4), characterized in that: The assembly includes a fixed mold assembly (1) installed at the injection end of the die casting machine, a moving mold assembly (3) installed at the movable end of the die casting machine, and a cavity assembly (2) disposed between the fixed mold assembly (1) and the moving mold assembly (3). The fixed mold assembly (1) includes a fixed template (11) installed at the injection end of the die casting machine, in which a core plate (112) for molding is installed. The cavity assembly (2) includes four sets of movable cavity plates (21), which together with the core plate (112) form a cavity for molding. The moving mold assembly (3) includes a moving template (31).

2. The die-casting mold for a new energy vehicle drive motor cylinder block according to claim 1, characterized in that: The cavity assembly (2) includes four supports (22) mounted on the four sides of the moving template (31), and the supports (22) have guide rails that enable the cavity plate (21) to maintain linear motion. The bottom of the cavity plate (21) has a sliding groove that cooperates with the guide rails.

3. The die-casting mold for a new energy vehicle drive motor cylinder block according to claim 2, characterized in that: The cavity assembly (2) also includes a telescopic drive (23) installed on the outside of the bracket (22), the output end of which is connected to one end of the cavity plate (21).

4. The die-casting mold for a new energy vehicle drive motor cylinder block according to claim 3, characterized in that: The cavity assembly (2) also includes a locking member (24) slidably disposed in one of the supports (22), and the locking member (24) is movable to contact the outer side of one of the cavity plates (21). The bottom of the fixed mold plate (11) has an inclined guide post (113) corresponding to the locking member (24). The locking member (24) has an inclined hole that cooperates with the inclined guide post (113). When the fixed mold assembly (1) and the moving mold assembly (3) are closed, the inclined guide post (113) can be inserted into the inclined hole and the locking member (24) can be moved to contact the outer side of one of the cavity plates (21).

5. The die-casting mold for a new energy vehicle drive motor cylinder block according to claim 4, characterized in that: The cavity assembly (2) also includes a guide (25) mounted on one of the cavity plates (21) for introducing molten metal into the cavity. The guide (25) has a flow guide hole, and the fixed mold plate (11) has a gate (111). When the fixed mold assembly (1) and the moving mold assembly (3) are closed, the guide (25) can be inserted into the gate (111).

6. The die-casting mold for a new energy vehicle drive motor cylinder block according to claim 1, characterized in that: The fixed template (11) has limiting holes (114) at its four corners, and the top of the moving template (31) has a limiting rod (311) that cooperates with the limiting holes (114).

7. A die-casting mold for a new energy vehicle drive motor cylinder block according to claim 6, characterized in that: The bottom of the moving template (31) is fixed with two fixed seats (32) that can be installed on the moving end of the die casting machine. Between the two fixed seats (32) is a push plate (34) that can move up and down, and the push plate (34) has several push rods (35) that extend into the cavity.

8. The die-casting mold for a new energy vehicle drive motor cylinder block according to claim 7, characterized in that: The bottom sides of the moving template (31) are also provided with guide blocks (33) that enable the push plate (34) to maintain linear motion.

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