Multi-cavity die-casting die for aluminum alloy footstool of electric vehicle

Abstract

The utility model provides a kind of one-mold multi-cavity electric vehicle aluminum alloy footrest die, belong to die casting mould technical field.It includes upper die plate and lower die plate, the upper die plate and lower die plate between symmetrically provided with two groups of footrest forming assembly, the lower die plate two sides are symmetrically provided with two respectively with two groups of footrest forming assembly corresponding arrangement footrest connecting rod forming mechanism, two groups of footrest forming assembly between provided with the main pouring runner connected with footrest forming assembly, the upper die plate and lower die plate between still be equipped with the equalization pouring structure connected with main pouring runner.Die through symmetrically setting two groups of footrest forming assembly and corresponding footrest connecting rod forming mechanism, cooperate main pouring runner with equalization pouring structure, realize the balanced distribution of aluminum alloy melt between multi-chamber, the design solves the problem of melt filling uneven in one-mold multi-cavity die casting, improves the forming consistency of electric vehicle aluminum alloy footrest and connecting rod, improves product pass rate and production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, and relates to a die casting mold for multi-cavity aluminum alloy pedals for electric vehicles. Background Technology

[0002] Currently, die casting is widely used in the industry to produce aluminum alloy pedals for electric vehicles. To improve production efficiency, multi-cavity die casting molds have become the mainstream choice. However, traditional mold gating systems often employ simple branch runner designs, lacking an effective balanced distribution structure. When the molten aluminum alloy enters from the gate, the varying distances between each forming cavity and the main gating channel, as well as differences in runner resistance, easily lead to inconsistent melt filling speeds. Overly rapid filling in some cavities causes the molten metal to impact the cavity walls, generating turbulence and entraining air, resulting in defects such as porosity and inclusions. Conversely, overly slow filling in some cavities can lead to cold shuts and undercasting, resulting in inconsistent quality of pedal parts produced from the same mold and making it difficult to improve the pass rate.

[0003] For example, a Chinese patent discloses an aluminum alloy die-casting mold [application number: 201310053316.2], which includes an venting system, a barrel structure, and a sprue sleeve provided on a fixed mold and a moving mold. The venting system includes at least one set of venting sealing grilles. The venting sealing grilles are composed of several sealing grooves that are arranged in parallel and independent of each other in a semi-sealed state between the parting surfaces of the fixed mold and the moving mold, along the radial direction of the mold cavity. The front end of the venting sealing grilles is connected to the mold cavity, and the rear end is connected to the external space. The sealing grooves are formed by using the parting surface between the fixed mold and the moving mold as the mating reference surface, and maintaining a gap with a thickness of less than 0.02 mm between the two mating sealing surfaces or just pressing against each other. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a multi-cavity die-casting mold for aluminum alloy pedals in electric vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A multi-cavity die-casting mold for electric vehicle aluminum alloy pedals includes an upper mold plate and a lower mold plate. Two sets of pedal forming components are symmetrically arranged between the upper mold plate and the lower mold plate. Two pedal connecting rod forming mechanisms, respectively corresponding to the two sets of pedal forming components, are also symmetrically arranged on both sides of the lower mold plate. A main gating channel connected to the pedal forming components is arranged between the two sets of pedal forming components. A balanced gating structure connected to the main gating channel is also provided between the upper mold plate and the lower mold plate.

[0006] In the aforementioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the balanced gating structure includes a vertical gating channel with a circular cross-section, which is vertically arranged on the upper mold plate, and a guide column protruding from the lower mold plate. The guide column is inserted into the vertical gating channel, and a guide channel is provided on the side of the guide column near the main gating channel. The bottom of the guide channel has an outlet connected to the main gating channel.

[0007] In the aforementioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the bottom of the vertical gating channel abuts against the upper surface of the lower template, and the outer end of the main gating channel extends into the area of ​​the vertical gating channel. The vertical gating channel forms an arc-shaped buffer section on the upper side of the main gating channel inlet.

[0008] In the above-mentioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the pedal forming component includes three pedal forming cavities. The pedal forming cavities are connected by an upper forming groove on the upper mold plate and a lower forming surface on the lower mold plate. Three branch flow channels are respectively provided on both sides of the main gating channel. The side of the branch flow channel away from the main gating channel is connected to the lower forming surface.

[0009] In the aforementioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the pedal connecting rod forming mechanism includes a core-pulling slider slidably disposed on the lower template. The inner end of the core-pulling slider is fixedly connected to three pedal connecting rod forming blocks that are respectively connected to the three pedal forming cavities.

[0010] In the aforementioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the connection between the flow channel and the lower forming surface is located on the side of the connection between the pedal forming cavity and the pedal connecting rod forming block.

[0011] In the aforementioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the inner end of the pedal connecting rod forming block is provided with a connecting rod forming groove recessed inward.

[0012] In the aforementioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the core-pulling slider has a T-shaped cross-section, and the lower template has an inwardly recessed T-shaped limiting groove. The core-pulling slider is inserted into the limiting groove and slidably connected to it.

[0013] In the aforementioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, the top of the core-pulling slider is provided with an anti-retraction part, and the upper template is provided with an anti-retraction groove that matches the anti-retraction part.

[0014] In the above-mentioned multi-cavity die-casting mold for electric vehicle aluminum alloy pedals, an upper mold and a lower mold are respectively embedded on the upper and lower mold plates. The upper forming groove and the lower forming surface that make up the pedal forming cavity are respectively set on the upper mold and the lower mold. An anti-deviation positioning structure is also provided between the upper mold and the lower mold. The anti-deviation positioning structure includes four rectangular positioning blocks that protrude from the lower mold and four rectangular positioning grooves that are recessed inward from the upper mold, with the positioning blocks and positioning grooves being arranged correspondingly.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. The mold is designed with two sets of pedal forming components and corresponding pedal connecting rod forming mechanisms in a symmetrical manner. Combined with the main gating channel and the balanced gating structure, it achieves a balanced distribution of aluminum alloy melt in multiple chambers. This design solves the problem of uneven melt filling in multi-cavity die casting, improves the forming consistency of aluminum alloy pedals and connecting rods for electric vehicles, and increases product qualification rate and production efficiency.

[0016] 2. The balanced gating structure uses a vertical gating channel in conjunction with a guide column inserted into it. The guide channel on the guide column is connected to the main gating channel through the gate, so that the melt flows stably along the preset path. This structure solves the problems of large melt impact and unstable flow in traditional gating methods, realizes smooth melt distribution, ensures consistent filling conditions in each molding cavity, and enhances product dimensional accuracy.

[0017] 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

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a structural diagram of the lower template; Figure 3 This is a structural diagram of the upper template; Figure 4 This is a schematic diagram of the foot pedal connecting rod forming mechanism; Figure 5 yes Figure 1 Enlarged diagram of point A in the middle. Detailed Implementation

[0019] like Figures 1-5As shown, a multi-cavity die-casting mold for electric vehicle aluminum alloy pedals includes an upper mold plate 1 and a lower mold plate 2. Two sets of pedal forming components are symmetrically arranged between the upper mold plate 1 and the lower mold plate 2. Two pedal connecting rod forming mechanisms 3 are also symmetrically arranged on both sides of the lower mold plate 2, which are respectively corresponding to the two sets of pedal forming components. A main inlet channel 4 connected to the pedal forming components is arranged between the two sets of pedal forming components. A balanced inlet structure 5 connected to the main inlet channel 4 is also provided between the upper mold plate 1 and the lower mold plate 2.

[0020] In this invention, the mold is designed with two sets of pedal forming components and corresponding pedal connecting rod forming mechanisms arranged symmetrically. Combined with the main gating channel and the balanced gating structure, the aluminum alloy melt is balanced in the multi-chamber mold. This design solves the problem of uneven melt filling in multi-chamber die casting, improves the forming consistency of aluminum alloy pedals and connecting rods for electric vehicles, and increases product qualification rate and production efficiency.

[0021] Specifically, the balanced gating structure 5 includes a vertically mounted, circularly shaped gating channel 6 on the upper mold plate 1 and a guide column 7 protruding from the lower mold plate 2. The guide column 7 is inserted into the vertical gating channel 6. A guide channel 8 is located on the side of the guide column 7 closest to the main gating channel 4. The bottom of the guide channel 8 has an outlet 9 connected to the main gating channel 4. The balanced gating structure uses a vertical gating channel in conjunction with the inserted guide column. The guide channel on the guide column connects to the main gating channel via the outlet, allowing the melt to flow stably along a preset path. This structure solves the problems of large melt impact and unstable flow in traditional gating methods, achieving smooth melt distribution, ensuring consistent filling conditions in each molding cavity, and enhancing product dimensional accuracy.

[0022] Specifically, the bottom of the vertical gating channel 6 abuts against the upper surface of the lower mold plate 2, and the outer end of the main gating channel 4 extends into the area of ​​the vertical gating channel 6. The vertical gating channel 6 forms an arc-shaped buffer section 24 on the upper side of the inlet of the main gating channel 4. The bottom of the vertical gating channel abuts against the lower mold plate, and the outer end of the main gating channel extends into the area of ​​the vertical gating channel, forming an arc-shaped buffer section on the upper side of the inlet, so that the melt is buffered before entering the main gating channel. This design solves the turbulence problem caused by the melt directly impacting the channel, reduces flow resistance, avoids air entrainment, reduces internal porosity defects in the molded part, and improves material density.

[0023] Specifically, the pedal molding assembly includes three pedal molding cavities 10. Each pedal molding cavity 10 is connected by an upper molding groove 11 on the upper mold plate 1 and a lower molding surface 12 on the lower mold plate 2. Three branch flow channels 13 are respectively provided on both sides of the main gating channel 4, with the branch flow channels 13 connected to the lower molding surface 12 on the side furthest from the main gating channel 4. The pedal molding assembly includes three pedal molding cavities, and the three branch flow channels on both sides of the main gating channel connect to the lower molding surface, enabling synchronous filling of multiple cavities within a single assembly. This structure solves the problem of inconsistent gating sequences in multiple cavities, ensuring uniform solidification time and pressure distribution for each pedal molded part, and reducing product performance fluctuations caused by molding differences.

[0024] Specifically, the pedal connecting rod forming mechanism 3 includes a core-pulling slider 14 slidably disposed on the lower template 2. Three pedal connecting rod forming blocks 15, each connected to one of the three pedal forming cavities 10, are fixedly connected to the inner end of the core-pulling slider 14. The pedal connecting rod forming mechanism uses a sliding core-pulling slider fixedly connected to the three pedal connecting rod forming blocks to achieve integrated forming of the pedal and connecting rod. This design solves the problem of secondary processing required by traditional split molding, simplifies the production process, ensures the connection strength between the pedal and the connecting rod, reduces assembly errors, and improves the overall structural stability.

[0025] Specifically, the connection between the flow channel 13 and the lower molding surface 12 is located on the side of the connection between the pedal molding cavity 10 and the pedal connecting rod molding block 15. This connection between the flow channel and the lower molding surface allows the melt to first fill the pedal body and then flow to the connecting rod section. This design solves the problem of insufficient filling at critical connection points, ensuring sufficient shrinkage compensation during melt solidification at the connection, enhancing the bond strength between the pedal and the connecting rod, and reducing the risk of breakage during use.

[0026] Specifically, the pedal connecting rod forming block 15 has an inwardly recessed connecting rod forming groove 23 at its inner end. This groove ensures the connecting rod forms a pre-defined structural shape during molding. This design solves the problem of insufficient dimensional accuracy of the connecting rod caused by the simple structure of traditional forming blocks, ensuring the compatibility between the connecting rod and the pedal, improving assembly efficiency, and optimizing the stress structure of the connecting rod to enhance its durability.

[0027] Specifically, the core-pulling slider 14 has a T-shaped cross-section, and the lower template 2 has an inwardly recessed T-shaped limiting groove 16. The core-pulling slider 14 is inserted into the limiting groove 16 and slidably connected to it. Both the core-pulling slider and the limiting groove adopt a T-shaped cross-section design, which ensures precise guidance and limiting of the core-pulling slider during sliding. This design solves the problem of molding dimension deviation caused by slider offset during core pulling, ensures the molding accuracy of the foot pedal connecting rod, enhances the stability of slider movement, and extends the service life of the mold.

[0028] Preferably, the top of the core-pulling slider 14 is provided with an anti-displacement part 17, and the upper template 1 is provided with an inwardly recessed anti-displacement groove 18 that matches the anti-displacement part 17. The anti-displacement part at the top of the core-pulling slider cooperates with the anti-displacement groove of the upper template to prevent the core-pulling slider from displacing during the die-casting process. This design solves the problem of molding defects caused by slider displacement under die-casting pressure, ensures the dimensional stability of the molded parts, simplifies the mold locking structure, and improves operational safety.

[0029] Specifically, upper mold 19 and lower mold 20 are respectively embedded in upper mold plate 1 and lower mold plate 2. The upper forming groove 11 and lower forming surface 12 that make up the pedal forming cavity 10 are respectively set on upper mold plate 19 and lower mold plate 20. An anti-deviation positioning structure is also provided between upper mold plate 19 and lower mold plate 20. The anti-deviation positioning structure includes four rectangularly distributed positioning blocks 21 that protrude on lower mold plate 20 and four rectangularly distributed positioning grooves 22 that are recessed inward on upper mold plate 19. The positioning blocks 21 and positioning grooves 22 are correspondingly arranged. The upper and lower molds are respectively provided with upper forming grooves and lower forming surfaces, and the rectangularly distributed positioning blocks and positioning grooves form an anti-deviation positioning structure to achieve precise mold closing. This design solves the cavity misalignment problem caused by direct molding of traditional mold plates, improves the forming accuracy of the pedal, and the mold structure is easy to replace after wear, reducing mold maintenance costs and ensuring product consistency in long-term production.

[0030] The working principle of this utility model is as follows: the mold is symmetrically set with two sets of pedal forming components and corresponding pedal connecting rod forming mechanisms. Combined with the main gating channel and the balanced gating structure, the aluminum alloy melt is balanced in the multi-chamber. This design solves the problem of uneven melt filling in multi-chamber die casting, improves the forming consistency of aluminum alloy pedals and connecting rods for electric vehicles, and increases product qualification rate and production efficiency. The balanced gating structure employs a vertical gating channel in conjunction with an inserted guide column. The guide column connects to the main gating channel via a guide channel, allowing the melt to flow stably along a preset path. This structure solves the problems of large melt impact and unstable flow in traditional gating methods, achieving smooth melt distribution, ensuring consistent filling conditions in each molding cavity, and enhancing product dimensional accuracy. The bottom of the vertical gating channel abuts against the lower mold plate, and the outer end of the main gating channel extends into the vertical gating channel area, forming an arc-shaped buffer section above the inlet to buffer the melt before it enters the main gating channel. This design solves the turbulence problem caused by the melt directly impacting the channel, reduces flow resistance, prevents air entrapment, reduces internal porosity defects in the molded part, and improves material density. The pedal forming assembly includes three pedal forming cavities. Three branch flow channels are set on both sides of the main inlet flow channel to connect to the lower forming surface, realizing the synchronous filling of multiple cavities within a single assembly. The pedal connecting rod forming mechanism adopts a sliding core-pulling slider and is fixedly connected to the three pedal connecting rod forming blocks, realizing the integrated forming of the pedal and the connecting rod. The connection between the branch flow channels and the lower forming surface is located on the side of the connection between the pedal forming cavity and the pedal connecting rod forming block, so that the melt first fills the pedal body and then flows to the connecting rod part. This design solves the problem of insufficient filling at key connection parts, ensures sufficient shrinkage when the melt at the connection solidifies, enhances the bonding strength between the pedal and the connecting rod, and reduces the risk of breakage during use. The inner end of the pedal connecting rod forming block is recessed to set the connecting rod forming groove, so that the connecting rod forms a preset structural shape during forming. Both the core-pulling slider and the limiting slide groove adopt a T-shaped cross-section design, so that the core-pulling slider is accurately guided and limited during sliding. The anti-displacement part at the top of the core-pulling slider cooperates with the anti-displacement groove of the upper template to prevent the core-pulling slider from displacing during the die casting process. The upper and lower insert molds are respectively equipped with upper forming grooves and lower forming surfaces, and a positioning structure is formed by rectangularly distributed positioning blocks and positioning grooves to achieve precise mold closing. This design solves the cavity misalignment problem caused by direct molding of traditional templates, improves the molding accuracy of the foot pedal, and at the same time, the insert mold structure is easy to replace after wear, reduces mold maintenance costs, and ensures product consistency in long-term production.

[0031] 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 substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A multi-cavity die-casting mold for aluminum alloy pedals in electric vehicles, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that, Two sets of foot pedal forming components are symmetrically arranged between the upper template (1) and the lower template (2). Two foot pedal connecting rod forming mechanisms (3) are also symmetrically arranged on both sides of the lower template (2), which are respectively corresponding to the two sets of foot pedal forming components. A main inlet channel (4) connected to the foot pedal forming components is arranged between the two sets of foot pedal forming components. A balanced inlet structure (5) connected to the main inlet channel (4) is also provided between the upper template (1) and the lower template (2).

2. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 1, characterized in that, The balanced pouring structure (5) includes a vertical pouring channel (6) with a circular cross-section, which is vertically set on the upper template (1) and a guide column (7) protruding from the lower template (2). The guide column (7) is inserted into the vertical pouring channel (6). The guide column (7) has a guide channel (8) on the side near the main pouring channel (4). The bottom of the guide channel (8) has an outlet (9) connected to the main pouring channel (4).

3. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 2, characterized in that, The bottom of the vertical pouring channel (6) abuts against the upper surface of the lower template (2), and the outer end of the main pouring channel (4) extends into the area of ​​the vertical pouring channel (6). The vertical pouring channel (6) forms an arc-shaped buffer section (24) on the upper side of the inlet of the main pouring channel (4).

4. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 3, characterized in that, The pedal forming assembly includes three pedal forming cavities (10). The pedal forming cavity (10) is connected by an upper forming groove (11) on the upper template (1) and a lower forming surface (12) on the lower template (2). Three branch flow channels (13) are respectively provided on both sides of the main inlet flow channel (4). The branch flow channel (13) is connected to the lower forming surface (12) on the side away from the main inlet flow channel (4).

5. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 4, characterized in that, The pedal connecting rod forming mechanism (3) includes a core-pulling slider (14) slidably disposed on the lower template (2), and the inner end of the core-pulling slider (14) is fixedly connected to three pedal connecting rod forming blocks (15) respectively connected to the three pedal forming cavities (10).

6. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 5, characterized in that, The connection between the diversion channel (13) and the lower forming surface (12) is located on the side of the connection between the pedal forming cavity (10) and the pedal connecting rod forming block (15).

7. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 5, characterized in that, The foot pedal connecting rod forming block (15) has a connecting rod forming groove (23) recessed inward at its inner end.

8. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 6, characterized in that, The core-pulling slider (14) has a T-shaped cross section. The lower template (2) is recessed inward and has a T-shaped limiting groove (16). The core-pulling slider (14) is inserted into the limiting groove (16) and slidably connected to the limiting groove (16).

9. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 8, characterized in that, The top of the core-pulling slider (14) is provided with an anti-retraction part (17), and the upper template (1) is provided with an anti-retraction groove (18) that is adapted to the anti-retraction part (17).

10. The multi-cavity die-casting mold for electric vehicle aluminum alloy pedals according to claim 4, characterized in that, The upper template (1) and the lower template (2) are respectively fitted with an upper mold (19) and a lower mold (20). The upper forming groove (11) and the lower forming surface (12) that make up the foot pedal forming cavity (10) are respectively set on the upper mold (19) and the lower mold (20). An anti-deviation positioning structure is also provided between the upper mold (19) and the lower mold (20). The anti-deviation positioning structure includes four rectangular positioning blocks (21) that protrude from the lower mold (20) and four rectangular positioning grooves (22) that are recessed inward from the upper mold (19). The positioning blocks (21) and positioning grooves (22) are provided correspondingly.

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