Integrated high-pressure casting mold for new energy automobile workpiece
By designing the core assembly of the integrated high-pressure casting mold, the efficient forming and core pulling of coaxial holes in new energy vehicle workpieces were achieved, solving the problems of complex mold structure and difficulty in ensuring coaxiality, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO SCIVEDA MASCH CO LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-05-12
AI Technical Summary
Existing casting molds for integrated parts of new energy vehicles have problems such as complex mold structure, difficulty in ensuring coaxiality, high production cost, low efficiency and large space occupation, especially when forming coaxial relative hole system structures.
Using an integrated high-pressure casting mold, the core assembly is moved to simultaneously form a first and second coaxial hole structure, achieving double hole forming in one core insertion and double hole core pulling in one core removal. Combined with the design of guide channels, clearance channels and flow channels, the movement path of the core and the flow of molten metal are optimized.
It significantly improves the coaxiality and assembly accuracy of workpieces, reduces the difficulty and cost of mold processing, shortens the production cycle, and improves the product qualification rate and the internal density and mechanical properties of castings.
Smart Images
Figure CN224222711U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of die casting technology, specifically relating to an integrated high-pressure casting mold for new energy vehicle parts. Background Technology
[0002] With the rapid development of the new energy vehicle industry, integrated casting technology has become an important development direction in the automotive manufacturing field due to its ability to significantly reduce the number of parts, lower vehicle weight, and improve production efficiency. In the production process of integrated components for new energy vehicles, casting molds are key equipment that determines product quality and molding efficiency.
[0003] In existing integrated parts for new energy vehicles, there are often coaxial and oppositely arranged first and second hole structures (such as through or semi-through coaxial mounting holes, positioning holes, etc.). For such parts with coaxial and opposite hole systems, existing technologies typically use two independent cores for forming. Specifically, a first core and a second core need to be set separately, and they need to operate independently through different drive mechanisms or core-pulling directions to form the first and second hole structures respectively.
[0004] However, this existing technology using two independent cores has the following main drawbacks:
[0005] The mold structure is complex, requiring separate drive components, guide mechanisms and control systems for the two cores, resulting in a crowded internal space layout and cumbersome structural design.
[0006] Coaxiality is difficult to guarantee. Due to the independent movement of the two cores, it is difficult to ensure that the two hole-like structures have extremely high coaxiality after molding due to the influence of processing errors, assembly errors and cumulative motion errors. This can easily lead to difficulties in subsequent assembly or product scrap.
[0007] High production costs and low efficiency; the complex structure increases the manufacturing cost and maintenance difficulty of the mold; at the same time, multiple independent core-pulling actions prolong the mold opening and closing cycle and reduce production efficiency.
[0008] It occupies a large space, and the independent drive mechanism occupies valuable space in the moving mold or fixed mold, which limits the optimized layout of the mold in other functional modules (such as cooling system and ejection system). Utility Model Content
[0009] To address the aforementioned shortcomings of existing technologies, the technical problem to be solved by this utility model is to propose an integrated high-pressure casting mold for new energy vehicle workpieces. By using a movable core in the core assembly, a first hole-like structure and a second hole-like structure coaxially opposite to each other on the workpiece are formed simultaneously, thus achieving "one-time core insertion to form two holes and one-time core removal to complete the core extraction of two holes".
[0010] The technical solution adopted by this utility model to solve its technical problem is to propose an integrated high-pressure casting mold for new energy vehicle workpieces, wherein the workpiece has a first hole-like structure and a second hole-like structure arranged coaxially and oppositely, and the casting mold includes:
[0011] A fixed mold assembly, on which a fixed mold core block is provided;
[0012] A moving mold assembly is provided with a moving mold core block, which movably abuts against the fixed mold core block to jointly form a product cavity.
[0013] A core assembly, which is disposed on the moving mold assembly and has a movable core;
[0014] When the fixed mold assembly and the moving mold assembly are in the mold-closed state, the core moves along a direction perpendicular to the mold-closed direction and extends through the moving mold core block into the product cavity to simultaneously form the first hole structure and the second hole structure.
[0015] Before the fixed mold assembly and the moving mold assembly open, the core is removed from the product cavity to complete the core-pulling action.
[0016] In the aforementioned integrated high-pressure casting mold for new energy vehicle parts, the moving mold core has a guide channel, one end of the core passes through the guide channel and extends to the product cavity.
[0017] In the aforementioned integrated high-pressure casting mold for new energy vehicle workpieces, the moving mold core has a first groove structure, and the fixed mold core has a corresponding second groove structure. The first groove structure and the second groove structure together form a clearance channel for the core to pass through.
[0018] In the aforementioned integrated high-pressure casting mold for new energy vehicle workpieces, the product cavity has a first forming section and a second forming section arranged coaxially and oppositely. The guide channel, the first forming section, the clearance channel, and the second forming section are sequentially connected along the moving direction of the core to form a continuous channel for the core to pass through.
[0019] In the aforementioned integrated high-pressure casting mold for new energy vehicle parts, the core has a first forming area, a connecting section, and a second forming area distributed sequentially along its axial direction. The first forming area extends into the first forming section to form the first hole-like structure. The connecting section is accommodated within the clearance channel. The second forming area extends into the second forming section to form the second hole-like structure.
[0020] In the aforementioned integrated high-pressure casting mold for new energy vehicle parts, the core assembly further includes:
[0021] A push block, wherein the core is disposed on the push block, and the push block is used to drive the core to move;
[0022] The first driving element has its output end connected to the push block and is used to drive the push block to move.
[0023] In the aforementioned integrated high-pressure casting mold for new energy vehicle workpieces, the moving mold core block is provided with a flow groove, the flow groove and the surface of the fixed mold core block are in contact to form a flow channel, the flow channel is connected to the product cavity, and is used to supply die-casting material to flow into the product cavity.
[0024] In the aforementioned integrated high-pressure casting mold for new energy vehicle parts, the flow channel includes a main flow channel and multiple branch flow channels. Each branch flow channel is connected to different parts of the main flow channel and the product cavity to achieve multi-point feeding.
[0025] In the aforementioned integrated high-pressure casting mold for new energy vehicle workpieces, the moving mold assembly is further provided with a slider assembly for forming the side structure of the workpiece.
[0026] In the aforementioned integrated high-pressure casting mold for new energy vehicle parts, the slider assembly includes:
[0027] A slider, whose movement is configured on the moving mold assembly;
[0028] A slider base, wherein the slider is connected to the slider base, and the slider base is used to drive the slider to move;
[0029] The second driving component is connected to the output end of the slider seat, and the second driving component is used to drive the slider seat to move.
[0030] Compared with the prior art, the present invention has the following beneficial effects:
[0031] (1) The movable core in the core assembly simultaneously forms the first and second coaxial hole structures, realizing "one-time core insertion to form two holes and one-time core removal to complete the core pulling of two holes". This design significantly shortens the auxiliary time in the die casting cycle and speeds up the overall production cycle. Compared with the traditional dual independent core scheme, this scheme effectively eliminates the cumulative errors caused by separate processing, assembly and multiple motion mechanism coordination, significantly improves the coaxiality and assembly accuracy of key parts of the workpiece, thereby improving the first-pass yield of the product. In addition, this integrated design not only reduces the processing difficulty and material cost of the mold, but also reduces potential mechanical failure points, making the daily maintenance of the mold more convenient.
[0032] (2) By setting a first groove and a second groove on the moving mold core block and the fixed mold core block respectively, the two are combined in the mold closing state to form a clearance channel for the core to pass through. The connecting section of the core is precisely fitted with the inner wall of the clearance channel and completely filled in the forming state. This structure not only provides a stable passage path for the core, but also effectively blocks the intrusion of molten metal into the parting surface gap during high pressure die casting, thereby avoiding the generation of hard-to-clean flash inside the workpiece or at the parting surface, and ensuring the surface finish and dimensional accuracy of the casting.
[0033] (3) This utility model designs a flow channel including a main channel and multiple branch channels, and dynamically balances the flow rate and velocity of each branch channel by optimizing the geometric parameters of each branch channel, such as the cross-sectional width or setting a flow-blocking structure. This design ensures that the molten metal can reach each end of the product cavity synchronously, achieving stable filling and effectively suppressing casting defects such as cold shuts, flow marks and air entrapment caused by asynchronous filling or flow rate differences, further improving the internal density and mechanical properties of the casting. Attached Figure Description
[0034] Figure 1 This is a 3D view of the workpiece in this design.
[0035] Figure 2 This is a 3D view of the proposed solution.
[0036] Figure 3 yes Figure 2 A plan view of the hidden part of the structure.
[0037] Figure 4 yes Figure 3 Sectional view of AA.
[0038] Figure 5 This is a 3D view of the moving model components in this solution.
[0039] Figure 6 yes Figure 5 A 3D view of the hidden part of the structure.
[0040] Figure 7 This is a 3D view of the fixed mold component in this solution.
[0041] Figure 8 This is a 3D view of the core component in this design.
[0042] In the figure, 100 is the workpiece; 110 is the first hole structure; 120 is the second hole structure; 200 is the fixed mold assembly; 210 is the fixed mold core block; 211 is the second groove structure; 300 is the moving mold assembly; 310 is the moving mold core block; 311 is the guide channel; 312 is the first groove structure; 313 is the flow channel; 400 is the product cavity; 410 is the first forming section; 420 is the second forming section; 500 is the core assembly; 510 is the core; 511 is the first forming area; 512 is the connecting section; 513 is the second forming area; 520 is the push block; 530 is the first driving component; 600 is the clearance channel; 700 is the flow channel; 800 is the slider assembly; 810 is the slider; 820 is the slider seat; and 830 is the second driving component. Detailed Implementation
[0043] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0044] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.
[0045] like Figures 1 to 8 As shown, this solution provides an integrated high-pressure casting mold for new energy vehicle workpieces. The workpiece 100 has a first hole structure 110 and a second hole structure 120 arranged coaxially and oppositely. The casting mold includes: a fixed mold assembly 200, on which a fixed mold core block 210 is provided; a moving mold assembly 300, on which a moving mold core block 310 is provided, the moving mold core block 310 and the fixed mold core block 210 movably abutting against each other to jointly form a product cavity 400; and a core assembly 500, which is disposed on the moving mold assembly 300 and has a movable core 510.
[0046] During operation, after the fixed mold assembly 200 and the moving mold assembly 300 complete mold closing, the core assembly 500 immediately drives the core 510 to move perpendicular to the mold closing direction. The core 510 passes through the moving mold core block 310 and precisely extends into the preset position in the product cavity 400, remaining stationary. Subsequently, molten metal is injected and cooled to solidify. During this process, the core 510 simultaneously forms the first hole structure 110 and the second hole structure 120 on the workpiece 100. After the casting is completely solidified, before the fixed mold assembly 200 and the moving mold assembly 300 perform the mold opening action, the core assembly 500 drives the core 510 to completely withdraw from the product cavity 400 to complete the core pulling action. This timing ensures that at the moment of mold opening and separation, the core 510 has detached from the side of the fixed mold assembly 200 and the hole wall of the casting, avoiding mechanical interference between the core 510 and the fixed mold assembly 200 or the casting, and preventing product damage or mold damage.
[0047] Since the first hole structure 110 and the second hole structure 120 are positioned and formed at the same time by the same core 510, the cumulative errors caused by separate processing, assembly, and coordination of multiple motion mechanisms in the traditional dual independent core 510 scheme are effectively eliminated. This is crucial for the high-precision bearing positions or connecting holes in the integrated workpiece 100 of new energy vehicles, significantly improving the assembly accuracy and first-pass yield of the product.
[0048] In this design, the core assembly 500 simplifies the internal space layout of the moving mold assembly 300, reducing not only the machining difficulty and material costs of the mold but also potential mechanical failure points. This makes daily maintenance, cleaning, and replacement of vulnerable parts more convenient, effectively extending the mold's service life. The core-pulling process, which originally required multiple independent actions, is integrated into a single synchronous stroke, significantly shortening auxiliary time in the die-casting cycle, accelerating the overall production cycle, and better meeting the needs of large-scale, high-efficiency mass production of new energy vehicle components.
[0049] Furthermore, the moving model core 310 has a guide channel 311, through which one end of the core 510 passes and extends into the product cavity 400. The guide channel 311 provides initial support and straight guidance for the core 510, preventing the core 510 from tilting or vibrating during movement.
[0050] Furthermore, the moving model core block 310 has a first groove structure 312, and the fixed model core block 210 has a corresponding second groove structure 211. The first groove structure 312 and the second groove structure 211 are combined together in the mold closing state to form a clearance channel 600 through which the core 510 passes.
[0051] Furthermore, the product cavity 400 has a first molding section 410 and a second molding section 420 arranged coaxially and relative to each other. The guide channel 311, the first molding section 410, the clearance channel 600 and the second molding section 420 are arranged in sequence along the moving direction of the core 510 to form a continuous channel for the core 510 to pass through.
[0052] Furthermore, the core 510 has a first forming area 511, a connecting section 512, and a second forming area 513 arranged sequentially along the axial direction. The first forming area 511 extends into the first forming section 410 to form the first hole structure 110, the connecting section 512 is accommodated in the relief channel 600, and the second forming area 513 extends into the second forming section 420 to form the second hole structure 120.
[0053] After the fixed mold assembly 200 and the moving mold assembly 300 complete mold closing, one end of the core 510 extends through the guide channel 311 on the moving mold core block 310 towards the product cavity 400, passing sequentially through the first molding section 410 and the clearance channel 600 until the second molding section 513 on the core 510 is fully inserted into the second molding section 420. At this time, the core 510 reaches the preset molding position, that is, the first molding section 511 is located in the first molding section 410, the connecting section 512 is accommodated in the clearance channel 600, and the second molding section 513 is located in the second molding section 420.
[0054] In this state, the first forming area 511 cooperates with the first forming section 410 to form the first hole structure 110; the connecting section 512 occupies the space within the clearance channel 600 to prevent the die-casting material from filling the area; the second forming area 513 cooperates with the second forming section 420 to form the second hole structure 120.
[0055] Since the first hole structure 110 and the second hole structure 120 are formed simultaneously by the first forming area 511 and the second forming area 513 of the core 510, the coaxiality of the first hole structure 110 and the second hole structure 120 depends on the machining accuracy of the core 510 itself, effectively eliminating the cumulative error caused by the cooperation of multiple mechanisms. In the mold-closed state, the first groove structure 312 and the second groove structure 211 are assembled to form a relief channel 600. The core 510 moves along the relief channel 600, and the connecting section 512 of the core 510 exactly fills the relief channel 600. This design not only provides the necessary passage space for the movement of the core 510, but also prevents molten metal from entering the relief channel 600 during high-pressure die casting, thereby avoiding flash on the workpiece 100. After mold closing, the core 510 can simultaneously form the first hole structure 110 and the second hole structure 120 in one step; before mold opening, the core 510 exits in one step, simultaneously demolding the first hole structure 110 and the second hole structure 120. This synchronous molding and synchronous core pulling mechanism significantly simplifies the action sequence, shortens the production cycle, and improves production efficiency.
[0056] Furthermore, the core assembly 500 also includes: a push block 520, on which the core 510 is disposed, and the push block 520 is used to drive the core 510 to move; and a first drive member 530, whose output end is connected to the push block 520, for driving the push block 520 to move.
[0057] After the fixed mold assembly 200 and the moving mold assembly 300 complete the mold closing, the first driving component 530 drives the pushing block 520 to move relative to the moving mold assembly 300, causing the core 510 to extend along its axial direction until it reaches the preset forming position. At this time, the core 510 simultaneously forms the first hole structure 110 and the second hole structure 120.
[0058] Before the fixed mold assembly 200 and the moving mold assembly 300 perform the mold opening action, the first driving component 530 drives the pushing block 520 in the opposite direction, causing the core 510 to retract completely along the axial direction, so that the first molding area 511 and the second molding area 513 simultaneously detach from the product cavity 400, and the core pulling action of the first hole structure 110 and the second hole structure 120 is completed synchronously.
[0059] Through the above design, the simultaneous molding and core pulling of the first hole structure 110 and the second hole structure 120 are achieved using a single drive source, ensuring the coordination and safety of the operation. The first drive component 530 can be a motor, hydraulic cylinder, or pneumatic cylinder.
[0060] In order to guide the die-casting material to flow smoothly into the product cavity 400, the moving mold assembly 300 is provided with a flow groove 313. The flow groove 313 is in close contact with the surface of the fixed mold core block 210, forming a closed flow channel 700. The flow channel 700 is connected to the product cavity 400, ensuring that the molten metal liquid can be injected into the product cavity 400 along the flow channel 700.
[0061] Furthermore, the flow channel 700 includes a main flow channel and multiple branch flow channels. Each branch flow channel connects the main flow channel to different parts of the product cavity 400. Its distribution layout is designed to achieve multi-point synchronous feeding of the product cavity 400.
[0062] To achieve balanced filling, the flow rate and velocity can be balanced by adjusting the geometric parameters of each branch channel. Specific strategies include: for branches with faster flow rates or lower resistance, their cross-sectional width can be reduced or resistance protrusions such as flow deflectors can be installed to increase flow resistance and slow down the filling speed; for branches with slower flow rates or higher resistance, their cross-section can be appropriately widened or the channel shape can be optimized to reduce flow resistance and accelerate the filling speed.
[0063] Through the above adjustments, it is ensured that the molten metal can reach all ends of the product cavity 400 simultaneously, avoiding defects such as cold shuts and air entrapment.
[0064] To form the side structure of the workpiece 100, the moving mold assembly 300 is also provided with a slider assembly 800.
[0065] Furthermore, the slider assembly 800 includes: a slider 810, which is movably disposed on the moving mold assembly 300; a slider seat 820, on which the slider 810 is connected, and the slider seat 820 is used to drive the slider 810 to move; and a second drive member 830, on which the slider seat 820 is connected to the output end of the second drive member 830, and the second drive member 830 is used to drive the slider seat 820 to move.
[0066] The movement of slider 810 and the movement of core 510 do not interfere with each other in space. When the moving mold assembly 300 and the fixed mold assembly 200 perform mold closing, the second drive component 830 is activated, driving slider seat 820 to move slider 810. When the moving mold assembly 300 and the fixed mold assembly 200 close, the moving mold core block 310 and the fixed mold core block 210 fit tightly together to form the product cavity 400, and slider 810 participates in the forming of the side structure as part of the product cavity 400.
[0067] After the die casting and cooling are completed, when the moving mold assembly 300 and the fixed mold assembly 200 perform the mold opening action, the second driving component 830 is activated, driving the slider seat 820 to move the slider 810 away from the product cavity 400 until the slider 810 completely exits the product cavity 400, completing the core pulling action of the side structure.
[0068] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0069] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0070] 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. An integrated high-pressure casting mold for new energy vehicle workpieces, wherein the workpiece has a first hole-like structure and a second hole-like structure arranged coaxially and oppositely, characterized in that, The casting mold includes: A fixed mold assembly, on which a fixed mold core block is provided; A moving mold assembly is provided with a moving mold core block, which movably abuts against the fixed mold core block to jointly form a product cavity. A core assembly, which is disposed on the moving mold assembly and has a movable core; When the fixed mold assembly and the moving mold assembly are in the mold-closed state, the core moves along a direction perpendicular to the mold-closed direction and extends through the moving mold core block into the product cavity to simultaneously form the first hole structure and the second hole structure. Before the fixed mold assembly and the moving mold assembly open, the core is removed from the product cavity to complete the core-pulling action.
2. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 1, characterized in that, The moving model core has a guide channel, one end of the core passes through the guide channel and extends to the product cavity.
3. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 2, characterized in that, The moving model core has a first groove structure, and the fixed model core has a corresponding second groove structure. The first groove structure and the second groove structure together form a clearance channel for the core to pass through.
4. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 3, characterized in that, The product cavity has a first forming section and a second forming section arranged coaxially and oppositely. The guide channel, the first forming section, the clearance channel and the second forming section are arranged in sequence along the moving direction of the core to form a continuous channel for the core to pass through.
5. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 4, characterized in that, The core has a first forming area, a connecting section, and a second forming area distributed sequentially along its axial direction. The first forming area extends into the first forming section to form the first hole structure. The connecting section is accommodated in the clearance channel. The second forming area extends into the second forming section to form the second hole structure.
6. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 1, characterized in that, The core assembly also includes: A push block, wherein the core is disposed on the push block, and the push block is used to drive the core to move; The first driving element has its output end connected to the push block and is used to drive the push block to move.
7. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 1, characterized in that, The moving model core is provided with a flow groove, which is in contact with the surface of the fixed model core to form a flow channel. The flow channel is connected to the product cavity and is used to allow the die-casting material to flow into the product cavity.
8. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 7, characterized in that, The flow channel includes a main flow channel and multiple branch flow channels. Each branch flow channel is connected to a different part of the main flow channel and the product cavity to achieve multi-point feeding.
9. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 1, characterized in that, The moving mold assembly is also provided with a slider assembly for forming the side structure of the workpiece.
10. The integrated high-pressure casting mold for new energy vehicle parts as described in claim 9, characterized in that, The slider assembly includes: A slider, whose movement is configured on the moving mold assembly; A slider base, wherein the slider is connected to the slider base, and the slider base is used to drive the slider to move; The second driving component is connected to the output end of the slider seat, and the second driving component is used to drive the slider seat to move.