New energy automobile rear cylinder body blank die-casting die

Abstract

The utility model relates to automobile rear cylinder pressure casting mould technical field, concretely relates to a new energy automobile rear cylinder blank pressure casting mould for melt metal liquid pressure casting forming rear cylinder body, including the fixed mould component of installation in the injection end of pressure casting machine, the movable mould component of installation in pressure casting machine activity end, be provided with side surface forming subassembly between the fixed mould component and movable mould component, the fixed mould component includes the fixed mould plate of installation in the injection end of pressure casting machine, and the upper core plate is fixed in fixed mould plate inside, and the bottom of upper core plate still is provided with upper core body, the movable mould component includes movable mould plate, the side surface forming subassembly includes four side surface forming blocks of setting between fixed mould plate and movable mould plate and can slide along the radial, and side surface forming block is provided with the side hole forming rod that can be used for to rear cylinder body side surface forming to the utility model discloses through being provided with side surface forming block and side hole forming rod to realize to the processing to cylinder side hole, to save the drilling procedure.

Description

Technical Field

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

[0002] With their core advantages of low energy consumption and low emissions, new energy vehicles have become a key direction for the transformation and upgrading of the automotive industry. As a key load-bearing component of the drive motor and transmission system of new energy vehicles, the rear cylinder block must simultaneously meet the stringent requirements of power transmission stability, lightweight design, and sealing performance. It is usually made of lightweight alloy materials such as aluminum alloys through die casting to prepare blanks, which are then further precision-machined into finished products.

[0003] Existing molds do not directly form lateral holes in the mold after the die-casting process; instead, they produce a blank without lateral holes. Then, secondary machining equipment such as CNC machine tools is used to drill and ream holes at the corresponding locations on the blank to form the final lateral holes. This method adds extra processing steps and extends the production cycle. Utility Model Content

[0004] The purpose of this utility model is to provide a die-casting mold for the rear cylinder block blank of a new energy vehicle, which is equipped with a side forming block and a side hole forming rod to process the side holes of the cylinder block, thereby saving the drilling process.

[0005] To address the problems of existing technologies, this utility model provides a die-casting mold for a rear cylinder block blank of a new energy vehicle, used to hydraulically cast molten metal into a rear cylinder block body. The mold includes a fixed mold assembly installed at the injection end of a die-casting machine and a moving mold assembly installed at the movable end of the die-casting machine. A side forming assembly is provided 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, and an upper core plate is fixed inside the fixed template. An upper core body is also provided at the bottom of the upper core plate. The moving mold assembly includes a moving template. The side forming assembly includes four radially sliding side forming blocks disposed between the fixed template and the moving template, and the side forming blocks are provided with side hole forming rods for forming the sides of the rear cylinder block body.

[0006] Preferably, the moving mold assembly includes a groove mounted on the moving mold plate for maintaining the linear motion of the side molding block, the bottom of which has a slider that can be slidably disposed in the groove.

[0007] Preferably, the side forming component further includes four brackets respectively disposed around the moving template, and telescopic drive components are fixed on the brackets, with the output end of the telescopic drive components connected to one side of the side forming block.

[0008] Preferably, the fixed mold plate is also provided with a gate, and one of the side forming blocks is provided with a guide. The guide has a guide hole for guiding the molten metal into the cavity. When the fixed mold assembly and the moving mold assembly are closed, the guide can be inserted into the gate.

[0009] Preferably, the fixed template has limit holes at the four corners of its bottom, and the moving template also has a guide rod at its top that can be inserted into the limit holes.

[0010] Preferably, the moving mold assembly further includes two fixed seats fixed to the moving end of the die casting machine, and the fixed seats are fixedly connected to the moving template. The moving template has a lower core plate, and the lower core plate has a lower core body.

[0011] Preferably, a push plate is slidably disposed between the two fixed seats, and the push plate has a push rod that can demold the rear cylinder body.

[0012] Preferably, the moving mold assembly further includes a guide block fixed to the bottom of the moving mold plate for keeping the push plate moving in a straight line.

[0013] The advantages of this utility model compared to the prior art are: This application features four side forming blocks that can move laterally along the cavity. The arrangement of the four side forming blocks corresponds one-to-one with the orientation of the side holes to be formed in the rear cylinder blank. Each side forming block has a side hole forming rod mounted on the side facing the cavity. The axial direction of the side hole forming rod is completely consistent with the design axial direction of the corresponding side hole. At the same time, each side forming block has a telescopic drive component on the side away from the cavity. The power output end of the telescopic drive component is connected to the side forming block, which can drive the side forming block to move stably back and forth along the pre-set guide slider of the mold. When the mold performs the mold closing action, the telescopic drive component starts synchronously and drives the side forming block to move towards the cavity, forming a complete forming space for the rear cylinder blank. At this time, the side hole forming rod extends into the cavity simultaneously. After the molten metal is poured into the cavity and cools and solidifies to form the rear cylinder blank, the telescopic drive component drives the side forming block to move away from the cavity in the opposite direction. The side hole forming rod smoothly detaches from the blank synchronously with the side forming block, completing the pre-forming process of the side hole. This structural design allows for the simultaneous pre-forming of the lateral holes in the rear cylinder block blank during the die-casting stage. This eliminates the need for a separate drilling process after die-casting; subsequent hole enlargement using precision machining equipment is sufficient to achieve the designed precision. This significantly reduces the machining steps for the rear cylinder block blank, lowers equipment investment and labor costs, effectively improves machining efficiency and lateral hole forming quality, and shortens the production cycle. Attached Figure Description

[0014] Figure 1This is a three-dimensional structural schematic diagram of a die-casting mold for a new energy vehicle rear cylinder block blank.

[0015] Figure 2 This is a schematic diagram of the first explosion of a die-casting mold for a new energy vehicle rear cylinder block blank according to the present invention.

[0016] Figure 3 This is a schematic diagram of the second exploded structure of a die-casting mold for a new energy vehicle rear cylinder block blank according to this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the fixed mold component of a die-casting mold for a rear cylinder block blank of a new energy vehicle, according to this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the side forming component of a die-casting mold for a rear cylinder block blank 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 rear cylinder block blank 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 template; 111. Gate; 112. Upper core plate; 113. Upper core body; 114. Limiting hole; 2. Side forming assembly; 21. Bracket; 22. Telescopic drive component; 23. Side forming block; 231. Guide component; 232. Side hole forming rod; 3. Moving mold assembly; 31. Moving template; 311. Guide rod; 32. Fixed seat; 33. Lower core plate; 331. Lower core body; 34. Ejector plate; 35. Guide block; 4. Rear 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 1-6As shown, this utility model provides a die-casting mold for a rear cylinder block blank of a new energy vehicle, used to hydraulically cast molten metal into a rear cylinder block body 4. It includes a fixed mold assembly 1 installed at the injection end of the die-casting machine and a moving mold assembly 3 installed at the movable end of the die-casting machine. A side forming assembly 2 is provided 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, and an upper core plate 112 is fixed inside the fixed template 11. An upper core body 113 is also provided at the bottom of the upper core plate 112. The moving mold assembly 3 includes a moving template 3. 1. The side forming component 2 includes four radially sliding side forming blocks 23 disposed between the fixed template 11 and the moving template 31. The side forming blocks 23 serve as the core forming components for the side profile of the rear cylinder body 4. In the mold-closed state, the four sets of side forming blocks 23 surround the rear cylinder body 4 from different sides, and their inner forming surfaces are completely matched with the side profile of the rear cylinder body 4, directly determining the shape accuracy and surface quality of the side profile of the rear cylinder body 4. Furthermore, the side forming blocks 23 are provided with side hole forming rods 232 that can be used to form the side profile of the rear cylinder body 4. The side hole forming rod 232 is a functional component designed specifically for the pre-forming of the side holes of the rear cylinder body 4. Its axial direction and outer diameter are adapted to the design axis and pre-forming hole diameter of the side holes of the rear cylinder body 4, respectively. When the mold is closed, it extends into the cavity along with the side forming block 23. After the molten metal cools and solidifies, the outer circumferential surface of the side hole forming rod 232 directly forms the pre-forming channel of the side hole on the blank, realizing the synchronous die casting of the side hole and the rear cylinder body 4, avoiding the subsequent separate drilling process. Only fine machining and hole enlargement are required to meet the accuracy requirements.

[0023] The moving mold assembly 3 includes a groove mounted on the moving template 31 for maintaining the linear movement of the side forming block 23. The bottom of the side forming block 23 has a slider that can be slidably disposed in the groove. The side forming assembly 2 also includes four supports 21 respectively disposed around the moving template 31. Telescopic drive members 22 are fixed on the supports 21, and the output end of the telescopic drive members 22 is connected to one side of the side forming block 23.

[0024] When the die-casting machine is started, the moving mold assembly 3 moves towards the fixed mold assembly 1 along with the moving end of the die-casting machine until the moving mold plate 31 and the fixed mold plate 11 are initially aligned. At the same time, the telescopic drive component 22 on the bracket 21 is started synchronously, and its output end extends and pushes the side forming block 23 to move. The slider at the bottom of the side forming block 23 moves linearly along the slide groove on the moving mold plate 31 until the inner forming surface of the side forming block 23 is completely in contact with the forming surface of the moving mold plate 31 and the outer peripheral surface of the upper core body 113, together forming a sealed cavity that perfectly matches the shape of the rear cylinder body 4 and the pre-formed side hole. At this time, the telescopic drive component 22 maintains output force to ensure that the cavity is sealed without gaps. The die-casting machine's injection system injects molten metal (such as aluminum alloy liquid) into a sealed cavity at a preset pressure and speed. The molten metal rapidly fills the cavity, enveloping the core body 113 and making full contact with the forming surface of the side forming block 23 and the outer peripheral surface of the side hole forming rod 232. After the molten metal is filled, the mold uses a built-in cooling system (usually found in most molds) to cool the cavity, allowing the molten metal to gradually cool to a solidified state within the cavity, forming a blank of the rear cylinder body 4 with a fixed shape. After the blank has completely solidified, the telescopic drive... The moving part 22 first moves in the opposite direction, its output end retracts and pulls the side forming block 23 to move away from the cavity. The slider at the bottom of the side forming block 23 slides in the opposite direction along the slide groove. The side hole forming rod 232 smoothly detaches from the pre-formed side hole of the blank along with the side forming block 23. Then, the moving end of the die casting machine drives the moving mold assembly 3 to move away from the fixed mold assembly 1. The moving template 31 drives the blank of the rear cylinder body 4 to completely detach from the upper core body 113 on the fixed mold side. One die casting cycle is completed. The semi-finished rear cylinder body that meets the precision requirements can be obtained.

[0025] The fixed mold plate 11 is also provided with a gate 111, and one of the side forming blocks 23 is provided with a guide 231. The guide 231 has a guide hole to guide the molten metal into the cavity. When the fixed mold assembly 1 and the moving mold assembly 3 are closed, the guide 231 can be inserted into the gate 111. The four corners of the bottom of the fixed mold plate 11 are provided with limit holes 114, and the top of the moving mold plate 31 is also provided with a guide rod 311 that can be inserted into the limit holes 114.

[0026] During the mold closing process, the guide 231 is inserted into the gate 111 on the fixed platen 11. The outer peripheral surface of the guide 231 is tightly fitted with the inner wall of the gate 111 to ensure that the molten metal does not leak. The die casting machine injection system injects the molten metal into the gate 111 on the fixed platen 11 at a preset pressure and speed. The molten metal enters the guide hole of the guide 231 through the gate 111. Under the guidance of the guide hole, it flows smoothly into the cavity. The molten metal fills the cavity quickly and evenly. After the molten metal is filled, the mold cools the cavity through the built-in cooling system, so that the molten metal gradually cools to a solidified state in the cavity, forming a blank of the rear cylinder body 4 with a fixed shape.

[0027] The moving mold assembly 3 further includes two fixed seats 32 fixed to the movable end of the die-casting machine, and the fixed seats 32 are fixedly connected to the moving template 31. The moving template 31 has a lower core plate 33, and the lower core plate 33 has a lower core body 331. A push plate 34 is also slidably arranged between the two fixed seats 32, and the push plate 34 has a push rod that can demold the rear cylinder body 4. The moving mold assembly 3 also includes a guide block 35 fixed to the bottom of the moving template 31 for keeping the push plate 34 moving linearly.

[0028] The moving end of the die-casting machine drives the moving mold assembly 3 to move away from the fixed mold assembly 1. The guide rod 311 is pulled out from the limiting hole 114. The blank of the rear cylinder body 4 moves with the moving mold assembly 3 and separates from the upper core body 113. When the moving mold assembly 3 moves to the preset mold opening position, the external ejector power drives the push plate 34 to move linearly along the guide block 35. The push plate 34 drives the push rod to push the blank of the rear cylinder body 4 in sync, so that the blank separates from the forming surface of the lower core body 331 and the moving mold plate 31, and finally completes the demolding. After the demolding blank is subsequently expanded and precision machined, the semi-finished rear cylinder body that meets the precision requirements can be obtained, and the mold enters the next die-casting cycle.

[0029] 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 rear cylinder block blank of a new energy vehicle, used to hydraulically cast molten metal into a rear 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 and a moving mold assembly (3) installed at the moving end of the die casting machine. A side forming assembly (2) is provided 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. An upper core plate (112) is fixed inside the fixed template (11), and an upper core body (113) is provided at the bottom of the upper core plate (112). The moving mold assembly (3) includes a moving template (31). The side forming assembly (2) includes four side forming blocks (23) that can slide radially between the fixed template (11) and the moving template (31). The side forming blocks (23) are provided with side hole forming rods (232) that can be used to form the side of the rear cylinder body (4).

2. The die-casting mold for a rear cylinder block blank of a new energy vehicle according to claim 1, characterized in that: The moving mold assembly (3) includes a groove mounted on the moving template (31) for keeping the side molding block (23) in a straight line, the side molding block (23) having a slider at the bottom that can be slidably disposed in the groove.

3. The die-casting mold for a new energy vehicle rear cylinder block blank according to claim 1, characterized in that: The side forming component (2) also includes four brackets (21) respectively arranged around the moving template (31). A telescopic drive component (22) is fixed on the bracket (21), and the output end of the telescopic drive component (22) is connected to one side of the side forming block (23).

4. The die-casting mold for a rear cylinder block blank of a new energy vehicle according to claim 1, characterized in that: The fixed mold plate (11) is also provided with a gate (111), and a guide (231) is provided on one of the side forming blocks (23). The guide (231) has a guide hole for guiding the molten metal into the cavity. When the fixed mold assembly (1) and the moving mold assembly (3) are closed, the guide (231) can be inserted into the gate (111).

5. The die-casting mold for a rear cylinder block blank of a new energy vehicle according to claim 4, characterized in that: The fixed template (11) has four corners with limit holes (114) at the bottom, and the top of the moving template (31) also has a guide rod (311) that can be inserted into the limit holes (114).

6. The die-casting mold for a rear cylinder block blank of a new energy vehicle according to claim 1, characterized in that: The moving mold assembly (3) also includes two fixed seats (32) fixed to the moving end of the die casting machine, and the fixed seats (32) are fixedly connected to the moving template (31). The moving template (31) has a lower core plate (33), and the lower core plate (33) has a lower core body (331).

7. The die-casting mold for a rear cylinder block blank of a new energy vehicle according to claim 6, characterized in that: A push plate (34) is also slidably disposed between the two fixed seats (32), and the push plate (34) has a push rod that can demold the rear cylinder body (4).

8. The die-casting mold for a rear cylinder block blank of a new energy vehicle according to claim 7, characterized in that: The moving mold assembly (3) also includes a guide block (35) fixed to the bottom of the moving mold plate (31) for keeping the push plate (34) moving in a straight line.

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