Aluminum alloy backrest upper cover die-casting die for electric vehicle

Abstract

The utility model belongs to die casting die technical field especially relates to a kind of die casting die of electric vehicle aluminum alloy backrest upper cover, including mould main part, the mould main part includes mould frame subassembly, cavity subassembly, pouring subassembly and stripping subassembly, the mould frame subassembly includes fixed die holder plate, movable die holder plate, guide pillar and guide bushing, the fixed die holder plate and movable die holder plate are arranged in parallel, four guide pillars are fixed in the lower surface four corners of fixed die holder plate, the cavity subassembly includes fixed die and movable die, the fixed die is fixed on the lower surface of fixed die holder plate by bolt, the movable die is fixed on the upper surface of movable die holder plate by bolt, the fixed die and movable die form the cavity that is adapted to electric vehicle aluminum alloy backrest upper cover after moulding.The utility model is through optimization design, the layout of mould frame subassembly, cavity subassembly, pouring subassembly and stripping subassembly is more reasonable, effectively reduce the wear and tear and failure occurrence frequency in production process, to reduce maintenance cost and production downtime.

Description

Technical Field

[0001] This utility model belongs to the field of die-casting mold technology, and relates to a die-casting mold for an aluminum alloy backrest cover of an electric vehicle. Background Technology

[0002] The aluminum alloy backrest cover of electric vehicles, as a key component of the electric vehicle seat, is typically produced using die casting. Existing die casting molds suffer from the following problems, leading to higher costs: First, the mold structure design is not optimized enough, making it prone to wear and malfunction during production. This necessitates frequent repairs and component replacements, increasing maintenance costs and production downtime. Second, the demolding mechanism of existing molds is not flexible enough, sometimes damaging the die-cast part during demolding. This not only affects product quality but may also require secondary processing and repair, further increasing production costs. Summary of the Invention

[0003] The purpose of this utility model is to address the above-mentioned problems by providing a die-casting mold for an aluminum alloy backrest cover for electric vehicles.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A die-casting mold for an aluminum alloy backrest cover for an electric vehicle includes a mold body. The mold body comprises a mold frame assembly, a cavity assembly, a casting assembly, and a demolding assembly. The mold frame assembly includes a fixed mold base plate, a movable mold base plate, guide pillars, and guide sleeves. The fixed mold base plate and the movable mold base plate are arranged parallel to each other. Four guide pillars are fixed at the four corners of the lower surface of the fixed mold base plate. The cavity assembly includes a fixed mold core and a movable mold core. The fixed mold core is fixed to the lower surface of the fixed mold base plate by bolts, and the movable mold core is fixed to the upper surface of the movable mold base plate by bolts. After the fixed mold core and the movable mold core are closed, a mold is formed that fits the aluminum alloy backrest cover of the electric vehicle. The casting assembly includes a sprue sleeve, a flow guide, and an ingate. The sprue sleeve is mounted on a fixed mold base plate, the flow guide is mounted on a moving mold base plate, one end of the ingate is installed inside the sprue sleeve, and the other end is connected to the flow guide. The interior of the ingate is hollow, and the flow guide is cylindrical. A connecting block is fixedly provided on the top of the flow guide, and a sprue is provided on one side of the connecting block. The position of the sprue corresponds to one side of the fixed mold core and the moving mold core. The other end of the sprue communicates with the ingate, and the connecting block is inserted into one end of the ingate.

[0005] In the aforementioned die-casting mold for the aluminum alloy backrest cover of an electric vehicle, a mounting groove for installing a flow guide component is provided at the connection position between the moving mold base plate and the moving mold core, and the upper surface edge of the flow guide component is flush with the surface of the mounting groove.

[0006] In the above-mentioned die-casting mold for the aluminum alloy backrest cover of electric vehicles, a fixing groove for installing the sprue sleeve and the inner sprue is provided at the connection position of the fixed mold base plate and the fixed mold core. The sprue sleeve has a T-shaped cross section, the bottom of the sprue sleeve is fixed in the fixing groove, and one end of the inner sprue extends downward through the fixing groove and connects with the guide component.

[0007] In the aforementioned die-casting mold for the aluminum alloy backrest cover of the electric vehicle, the position of the mounting groove corresponds to the position of the fixing groove.

[0008] In the aforementioned die-casting mold for the aluminum alloy backrest cover of an electric vehicle, the axis of the guide post is perpendicular to the fixed mold base plate, and four guide sleeves are provided on the upper surface of the moving mold base plate corresponding to the guide post position. The guide sleeves are in sliding fit with the guide post.

[0009] In the aforementioned die-casting mold for an aluminum alloy backrest cover for electric vehicles, the demolding assembly includes an ejector plate, inner ejector pins, and outer ejector pins. The ejector plate is located below the moving mold base plate and parallel to it. Several inner and outer ejector pins are fixed to the upper surface of the ejector plate. One end of each inner ejector pin penetrates the moving mold base plate and the moving mold core, extending to the inner wall of the cavity. In the same mold, the outer ejector pin is located on the outer side of the ejector plate, with one end penetrating the moving mold base plate and the moving mold core, extending to the inner wall of the cavity.

[0010] In the aforementioned die-casting mold for the aluminum alloy backrest cover of an electric vehicle, the surface of the pouring gate is an arc structure and has a smooth surface.

[0011] In the aforementioned die-casting mold for the aluminum alloy backrest cover of an electric vehicle, the flow guiding component is provided with an ejector pin hole at the position of the pouring gate, and the position of the ejector pin hole corresponds to that of the outer ejector pin.

[0012] In the aforementioned die-casting mold for the aluminum alloy backrest cover of an electric vehicle, the four corners of the contact surfaces between the fixed mold core and the moving mold core are provided with mutually cooperating positioning blocks and positioning grooves.

[0013] Compared with existing technologies, the advantages of this utility model are: 1. This utility model optimizes the mold structure design, reduces cumbersome steps in the mold assembly process, lowers assembly costs, and shortens assembly time. The guide component in the casting assembly adopts a cylindrical structure, combined with the hollow design of the inner runner and the smooth arc-shaped pouring gate, making the aluminum liquid flow more smoothly, reducing the scrap rate caused by poor aluminum liquid flow, thereby reducing production costs.

[0014] 2. This utility model not only facilitates the installation and disassembly of the mold, but also improves the positioning accuracy and stability of the mold. At the same time, the reasonable layout of the ejector plate, inner ejector and outer ejector in the demolding assembly ensures the smooth demolding of the product, reduces mold damage and product deformation caused by demolding difficulties, thereby extending the service life of the mold and reducing maintenance and replacement costs.

[0015] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall exploded structure of this utility model.

[0017] Figure 2 This is a top-view explosion diagram of this utility model.

[0018] Figure 3 This is a schematic diagram of the explosion from a low angle.

[0019] Figure 4 This is a partial structural schematic diagram of the present invention.

[0020] Figure 5 This is a partial explosion diagram of the present invention.

[0021] Figure 6 This is a schematic diagram of the overall external appearance of this utility model.

[0022] In the diagram: 1. Mold body; 2. Fixed mold base plate; 3. Moving mold base plate; 4. Fixed mold core; 5. Moving mold core; 6. Cavity; 7. Sprue bushing; 8. Flow guide component; 9. Inner runner; 10. Connecting block; 11. Sprue; 12. Mounting groove; 13. Fixing groove; 14. Ejector plate; 15. Inner ejector pin; 16. Outer ejector pin; 17. Ejector pin hole; 18. Positioning block; 19. Positioning groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-6As shown, a die-casting mold for an aluminum alloy backrest cover for an electric vehicle includes a mold body 1. The mold body 1 includes a mold frame assembly, a cavity 6 assembly, a casting assembly, and a demolding assembly. The mold frame assembly includes a fixed mold base plate 2, a movable mold base plate 3, guide pillars, and guide sleeves. The fixed mold base plate 2 and the movable mold base plate 3 are arranged parallel to each other. Four guide pillars are fixed at the four corners of the lower surface of the fixed mold base plate 2. The cavity 6 assembly includes a fixed mold core 4 and a movable mold core 5. The fixed mold core 4 is fixed to the lower surface of the fixed mold base plate 2 by bolts, and the movable mold core 5 is fixed to the upper surface of the movable mold base plate 3 by bolts. After the fixed mold core 4 and the movable mold core 5 are closed, a cavity 6 that fits the aluminum alloy backrest cover for the electric vehicle is formed. The casting assembly includes a sprue sleeve 7, a flow guide component 8, and an inner sprue 9. The sprue sleeve 7 is mounted on the fixed mold base plate 2, and the flow guide component 8 is mounted on the moving mold base plate 3. One end of the inner sprue 9 is installed inside the sprue sleeve 7, and the other end is connected to the flow guide component 8. The interior of the inner sprue 9 is a hollow structure, and the flow guide component 8 is a cylindrical structure. A connecting block 10 is fixedly provided on the top of the flow guide component 8. A sprue gate 11 is provided on one side of the connecting block 10. The position of the sprue gate 11 corresponds to one side of the fixed mold core 4 and the moving mold core 5. The other end of the sprue gate 11 communicates with the inner sprue 9, and the connecting block 10 is inserted into one end of the inner sprue 9.

[0025] Furthermore, the connection position between the moving mold base plate 3 and the moving mold core 5 is provided with a mounting groove 12 for mounting the flow guiding component 8, and the upper surface edge of the flow guiding component 8 is flush with the surface of the mounting groove 12.

[0026] In this embodiment, the depth of the mounting groove 12 reduces the resistance to the flow of molten metal, making the pouring process smoother and effectively avoiding defects caused by poor flow.

[0027] Furthermore, a fixing groove 13 for installing the sprue sleeve 7 and the inner sprue 9 is provided at the connection position of the fixed mold base plate 2 and the fixed mold core 4. The sprue sleeve 7 has a T-shaped cross section. The bottom of the sprue sleeve 7 is fixed in the fixing groove 13. One end of the inner sprue 9 extends downward through the fixing groove 13 and connects with the guide component 8.

[0028] In this embodiment, the inner gating 9 extends downward through the fixed groove 13 and is tightly connected to the flow guiding component 8, which further ensures the smooth flow of molten metal and avoids casting defects caused by poor connection.

[0029] Furthermore, the position of the mounting groove 12 corresponds to the position of the fixing groove 13.

[0030] Furthermore, the axis of the guide post is perpendicular to the fixed mold base plate 2, and four guide sleeves are provided on the upper surface of the moving mold base plate 3 corresponding to the position of the guide post. The guide sleeves are slidably engaged with the guide post.

[0031] In this embodiment, during the die casting process, this stable guiding mechanism effectively prevents misalignment between the moving mold and the fixed mold, thereby ensuring the dimensional accuracy and surface quality of the die casting.

[0032] Furthermore, the demolding assembly includes an ejector plate 14, inner ejector pins 15 and outer ejector pins 16. The ejector plate 14 is located below the moving mold base plate 3 and is parallel to the moving mold base plate 3. Several inner ejector pins 15 and outer ejector pins 16 are fixed on the upper surface of the ejector plate 14. One end of the inner ejector pin 15 passes through the moving mold base plate 3 and the moving mold core 5 and extends to the inner wall of the cavity 6.

[0033] Furthermore, the outer ejector pin 16 is located on the outside of the ejector plate 14, and one end of the outer ejector pin 16 passes through the moving mold base plate 3 and the moving mold core 5, extending to the inner wall of the cavity 6.

[0034] In this embodiment, the reasonable arrangement of the inner ejector pin 15 and the outer ejector pin 16 ensures that the product is subjected to uniform force during demolding, effectively avoiding deformation or damage caused by excessive local force, and improving the product qualification rate.

[0035] Furthermore, the surface of the pouring port 11 is an arc structure and has a smooth surface.

[0036] In this embodiment, the design of the arc-shaped and smooth-surfaced pouring gate 11 can reduce the resistance of the molten aluminum during the pouring process, allowing the molten aluminum to flow more smoothly into the cavity 6, and further reducing the scrap rate.

[0037] Furthermore, the flow guiding component 8 is provided with a ejector pin hole 17 at the position of the pouring port 11, and the position of the ejector pin hole 17 corresponds to the outer ejector pin 16.

[0038] In this embodiment, the ejector pin hole 17 is designed to facilitate the outer ejector pin 16 to accurately and quickly eject the product during demolding, thereby improving demolding efficiency.

[0039] Furthermore, the four corners of the contact surfaces between the fixed mold core 4 and the moving mold core 5 are provided with mutually cooperating positioning blocks 18 and positioning grooves 19, which effectively prevents dimensional deviations or surface defects in the die-casting parts caused by inaccurate positioning, and further improves product quality.

[0040] The working principle of this utility model is as follows: In use, the mold body 1 is first installed on the die-casting machine. The die-casting machine's mold-closing mechanism moves the moving mold base plate 3 towards the fixed mold base plate 2, causing the fixed mold core 4 and the moving mold core 5 to close, forming a cavity 6 that fits the aluminum alloy backrest cover of the electric vehicle. Next, molten aluminum alloy is injected through the sprue sleeve 7. The molten aluminum alloy flows evenly into the cavity 6 through the guide component 8 and the ingate 9 from the sprue 11. During the injection process, the smooth, rounded surface of the sprue 11 effectively reduces the flow resistance of the molten aluminum alloy, making the filling smoother.

[0041] After the cavity 6 is completely filled with molten aluminum alloy, the pressure holding and cooling stages begin. Once the molten aluminum alloy has cooled and solidified, the die-casting machine's mold-opening mechanism moves the moving mold base plate 3 away from the fixed mold base plate 2, thus opening the mold. At this point, the demolding assembly begins operation. The ejector plate 14 moves upward under the action of the die-casting machine's ejection mechanism, driving the inner ejector pin 15 and outer ejector pin 16 upward, ejecting the formed electric vehicle aluminum alloy backrest cover from the moving mold core 5, completing the demolding process. Simultaneously, the positioning blocks 18 and positioning grooves 19 at the four corners of the contact surface between the fixed mold core 4 and the moving mold core 5 cooperate with each other to ensure precise positioning during mold closing, improving the mold closing accuracy and thus ensuring the dimensional accuracy and quality stability of the produced electric vehicle aluminum alloy backrest cover. Furthermore, the mold structure is rationally designed, with tight fit between components, effectively reducing production costs and improving production efficiency.

[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0043] Although this document frequently uses terms such as 1. mold body; 2. fixed mold base plate; 3. moving mold base plate; 4. fixed mold core; 5. moving mold core; 6. cavity; 7. sprue bushing; 8. guide component; 9. inner sprue; 10. connecting block; 11. sprue; 12. mounting groove; 13. fixing groove; 14. ejector plate; 15. inner ejector pin; 16. outer ejector pin; 17. ejector pin hole; 18. positioning block; 19. positioning groove, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A die-casting mold for an aluminum alloy backrest cover of an electric vehicle, comprising a mold body (1), characterized in that, The mold body (1) includes a mold frame assembly, a cavity (6) assembly, a casting assembly, and a demolding assembly. The mold frame assembly includes a fixed mold base plate (2), a moving mold base plate (3), guide pillars, and guide sleeves. The fixed mold base plate (2) and the moving mold base plate (3) are arranged parallel to each other. Four guide pillars are fixed at the four corners of the lower surface of the fixed mold base plate (2). The cavity (6) assembly includes a fixed mold core (4) and a moving mold core (5). The fixed mold core (4) is fixed to the lower surface of the fixed mold base plate (2) by bolts, and the moving mold core (5) is fixed to the upper surface of the moving mold base plate (3) by bolts. After the fixed mold core (4) and the moving mold core (5) are closed, a cavity (6) is formed that is compatible with the aluminum alloy backrest cover of the electric vehicle. The casting assembly includes a sprue sleeve (7) and a flow guide component (7). 8) and the inner sprue (9), the sprue sleeve (7) is installed on the fixed mold base plate (2), the flow guide (8) is installed on the moving mold base plate (3), one end of the inner sprue (9) is installed in the sprue sleeve (7), and the other end is connected to the flow guide (8). The interior of the inner sprue (9) is a hollow structure, the flow guide (8) is a cylindrical structure, a connecting block (10) is fixedly provided on the top of the flow guide (8), a sprue (11) is provided on one side of the connecting block (10), the position of the sprue (11) corresponds to one side of the fixed mold core (4) and the moving mold core (5), the other end of the sprue (11) is connected to the inner sprue (9), and the connecting block (10) is inserted into one end of the inner sprue (9).

2. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 1, characterized in that, The connection position of the moving mold base plate (3) and the moving mold core (5) is provided with a mounting groove (12) for installing the flow guide component (8), and the upper surface edge of the flow guide component (8) is flush with the surface of the mounting groove (12).

3. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 2, characterized in that, The fixed mold base plate (2) and the fixed mold core (4) are provided with a fixing groove (13) for installing the sprue sleeve (7) and the inner sprue (9). The sprue sleeve (7) has a T-shaped cross section. The bottom of the sprue sleeve (7) is fixed in the fixing groove (13). One end of the inner sprue (9) extends downward through the fixing groove (13) and connects with the guide component (8).

4. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 3, characterized in that, The position of the mounting groove (12) corresponds to the position of the fixing groove (13).

5. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 4, characterized in that, The axis of the guide post is perpendicular to the fixed mold base plate (2). The upper surface of the moving mold base plate (3) is provided with four guide sleeves corresponding to the guide post positions. The guide sleeves slide with the guide post.

6. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 5, characterized in that, The demolding assembly includes an ejector plate (14), an inner ejector pin (15), and an outer ejector pin (16). The ejector plate (14) is located below the moving mold base plate (3) and is parallel to the moving mold base plate (3). Several inner ejector pins (15) and outer ejector pins (16) are fixed on the upper surface of the ejector plate (14). One end of the inner ejector pin (15) passes through the moving mold base plate (3) and the moving mold core (5) and extends to the inner wall of the cavity (6).

7. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 6, characterized in that, The outer ejector pin (16) is located on the outside of the ejector plate (14). One end of the outer ejector pin (16) passes through the moving mold base plate (3) and the moving mold core (5) and extends to the inner wall of the cavity (6).

8. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 7, characterized in that, The surface of the pouring port (11) is an arc structure and is smooth.

9. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 8, characterized in that, The flow guiding component (8) is provided with a ejector pin hole (17) at the position of the pouring port (11), and the position of the ejector pin hole (17) corresponds to the position of the outer ejector pin (16).

10. The die-casting mold for the aluminum alloy backrest cover of an electric vehicle according to claim 9, characterized in that, The four corners of the contact surfaces between the fixed mold core (4) and the moving mold core (5) are provided with mutually cooperating positioning blocks (18) and positioning grooves (19).

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