A high-pressure casting die for integrated forming of multiple workpieces of a new energy vehicle

Abstract

The application belongs to the technical field of die casting devices, and provides a high-pressure casting die for integrated forming of multiple workpieces of new energy vehicles, comprising: a fixed die assembly; a movable die assembly which is movably connected with the fixed die assembly and forms multiple product cavities between the fixed die assembly and the movable die assembly when the fixed die assembly and the movable die assembly abut against each other; and a feeding assembly which comprises a feeding channel, the feeding channel being arranged between the fixed die assembly and the movable die assembly, and each product cavity being connected with at least one feeding channel at one end. Compared with the prior art, the application can realize integrated high-pressure casting forming of multiple different predetermined types of workpieces of new energy vehicles by forming multiple product cavities with different shapes and structures through cooperation of the fixed die assembly and the movable die assembly, and greatly improves production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of die-casting equipment technology, specifically relating to a high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, key components such as body structural parts, chassis components, and battery pack accessories are upgrading towards integration, lightweighting, high precision, and high efficiency. High-pressure casting, with its advantages of high forming efficiency, good part density, and suitability for mass production, has become the mainstream forming process for core structural components of new energy vehicles. To further increase production capacity and reduce the cost and energy consumption of single-part molds, the industry generally adopts multi-cavity high-pressure casting molds, simultaneously forming multiple workpieces in one mold, achieving efficient mass production of multiple integrated workpieces.

[0003] However, existing integrated high-pressure casting molds for multi-workpiece applications in new energy vehicles still face significant technical bottlenecks in practical applications:

[0004] (1) Imbalance in filling multiple cavities, resulting in poor product consistency. Traditional multi-cavity molds often adopt symmetrical cavity designs with the same specifications and structure, which are difficult to adapt to the common mold production requirements of workpieces with different shapes, volumes, and wall thicknesses in new energy vehicles. The cross-sectional area of ​​the feed channel of each cavity does not match the cavity volume, and the flow rate and pressure distribution of molten metal are uneven. This can easily lead to problems such as insufficient filling, cold shuts, and shrinkage in some cavities, and overfilling and severe flash in some cavities. As a result, the dimensional accuracy and mechanical properties of the castings fluctuate greatly, and the yield rate is low.

[0005] (2) The layout of the flow channel and cavity is unreasonable, making it difficult to achieve synchronous filling. The length of the traditional feed flow channel, the branch position, and the flow distance are not matched and optimized. The filling time of the molten metal in different cavities is large, which can easily cause defects such as air entrapment, turbulence, and local overheating. Moreover, the flow channels are mostly scattered, with long flow and large pressure loss, which further aggravates the asynchronous filling.

[0006] (3) Insufficient versatility and maintainability of cavity modules and cooling systems. The cavity blocks of traditional molds are mostly integral or non-independent assembly structures. When a cavity is worn or the product is modified, the entire mold needs to be replaced, which is costly and has a long changeover cycle. The cooling channels are mostly centrally arranged at the mold frame level, which cannot achieve independent, precise, and high-pressure point cooling for different cavities and areas with different wall thicknesses. The solidification rate of the casting is uneven, which easily leads to thermal stress, deformation and internal defects.

[0007] (4) Poor compatibility between venting and local molding. Traditional venting grooves are mostly of uniform specifications and are not differentiated according to different cavity volumes and filling end positions. Gas cannot be discharged in time in the deep cavity and complex structure, resulting in pores and looseness. For local areas with significant thickness differences, there is a lack of targeted auxiliary feeding and venting process structures. The fluidity of the molten metal is insufficient and the filling resistance is high, making it difficult to meet the molding requirements of complex structural parts for new energy vehicles.

[0008] In summary, existing multi-cavity high-pressure casting molds cannot simultaneously meet the multiple requirements of multi-variety workpiece co-mold production, synchronous balanced filling, independent temperature control, rapid mold changeover, and stable venting, thus restricting the molding quality, production efficiency, and cost control of integrated high-pressure casting of multi-workpieces for new energy vehicles. Therefore, developing a high-pressure casting mold that can achieve balanced filling of irregular cavities, precise matching of flow channels, independent detachable modules, zoned cooling, and adaptive venting has become a pressing technical problem for the industry. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a high-pressure casting mold for the integrated molding of multiple workpieces in new energy vehicles, in light of the current state of the prior art.

[0010] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles is proposed, comprising: a fixed mold assembly; A moving mold assembly is movably fitted with the fixed mold assembly, and when the fixed mold assembly and the moving mold assembly abut against each other, multiple product cavities are formed between them; wherein, At least two of the multiple product cavities have different shapes and structures for molding different predetermined types of products; A feeding assembly includes a feeding channel disposed between the fixed mold assembly and the moving mold assembly, wherein at least one feeding channel is connected to one end of each product cavity; wherein... The cross-sectional area of ​​each of the feeding channels is proportional to the volume of the product cavity it connects to, so as to balance the filling amount of the multiple product cavities.

[0011] In the aforementioned high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles, the plurality of product cavities include a first product cavity, two second product cavities, and two third product cavities. The projected area of ​​the first product cavity on the moving mold assembly is S1, the projected area of ​​each second product cavity on the moving mold assembly is S2, and the projected area of ​​each third product cavity on the moving mold assembly is S3. S1 is greater than or equal to twice S2, and S2 is greater than S3. The first product cavity is connected to two feeding channels, and each of the second and third product cavities is connected to one feeding channel.

[0012] In the aforementioned high-pressure casting mold for integrated molding of multiple workpieces for new energy vehicles, the six feeding channels are all located in the middle of the area enclosed by the first product cavity, the two second product cavities, and the two third product cavities, and one end of each of the six feeding channels converges at a single point.

[0013] In the aforementioned high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles, the two feeding channels connecting the first product cavity are arranged symmetrically. The two feeding channels connecting the two second product cavities are arranged symmetrically. The two feed channels connecting the two third product cavities are arranged symmetrically.

[0014] In the aforementioned high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles, the feeding assembly further includes a flow divider cone connected to the moving mold assembly; the length of the multiple feeding channels is L1, and one end of each feeding channel converges at the flow divider cone; the shortest distance between the multiple product cavities and the flow divider cone is L2; ​​wherein... The length L1 and the shortest distance L2 of the feeding channel are configured such that L2 increases when L1 decreases, or L2 decreases when L1 increases, to synchronize the filling time of the multiple product cavities.

[0015] In the aforementioned high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles, each product cavity is composed of a moving mold cavity block and a fixed mold cavity block; wherein... Each of the moving model cavity blocks is independently and detachably connected to the moving model assembly, and each of the fixed model cavity blocks is independently and detachably connected to the fixed model assembly.

[0016] In the aforementioned high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles, the feeding assembly further includes a feeding sleeve connected to the fixed mold assembly, the feeding sleeve being located above the flow divider cone.

[0017] The aforementioned high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles further includes a cooling assembly. The cooling assembly comprises a fixed mold cooling channel and a moving mold cooling channel. Each fixed mold cavity block is independently provided with several fixed mold cooling channels, and each moving mold cavity block is independently provided with several moving mold cooling channels. Each of the fixed mold cooling channels is provided with a plurality of first high-pressure cooling pipes connected to the fixed mold assembly; Each of the moving mold cooling channels is provided with several second high-pressure cooling pipes connected to the moving mold assembly.

[0018] In the aforementioned high-pressure casting mold for integrated molding of multiple workpieces for new energy vehicles, when the thickness of a local area of ​​any of the product cavities is lower than a preset threshold, a process hole structure connecting the product cavity is provided on the moving model cavity block and / or cavity block at the corresponding position. The processable perforated structure includes: An auxiliary feeding channel extends into the thick-walled area of ​​the product cavity to increase the fluidity of the molten metal; And / or venting micropores located at the edges of thick-walled regions to discharge gas and reduce filling resistance; wherein, The aforementioned process-specific perforated structure forms process residue that can be removed by machining after the casting is formed.

[0019] The high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles mentioned above also includes an exhaust assembly, which includes multiple exhaust grooves. The plurality of venting grooves are respectively disposed at the filling end of each product cavity, and the cross-sectional area of ​​each venting groove matches the volume of the product cavity to which it is connected.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) By combining the fixed mold assembly and the moving mold assembly to form multiple product cavities with different shapes and structures, it is possible to realize the integrated high-pressure casting of multiple pre-defined types of workpieces for new energy vehicles, which greatly improves production efficiency. At the same time, the feeding channel of the feeding assembly is connected to each product cavity, and the cross-sectional area of ​​the feeding channel is proportional to the volume of the connected cavity. It can accurately match the metal liquid filling requirements of each cavity, realize the balance of filling amount of multiple product cavities, effectively avoid the problem of insufficient filling of some cavities and overfilling of some cavities, and ensure the basic forming accuracy of each type of formed workpiece.

[0022] (2) Each product cavity is composed of an independent moving mold cavity block and a fixed mold cavity block. The moving mold cavity block and the moving mold assembly, and the fixed mold cavity block and the fixed mold assembly are detachably connected. When a single cavity block is worn or deformed, or when the specifications of the molded workpiece need to be changed, only the corresponding cavity block needs to be disassembled and replaced. There is no need to replace the entire mold, which greatly reduces the maintenance cost and changeover cycle of the mold and improves the versatility and flexibility of the mold.

[0023] (3) The exhaust assembly is provided with exhaust grooves at the filling end of each product cavity, and the cross-sectional area of ​​the exhaust groove is matched with the volume of the connected product cavity. The cavity with a large volume is matched with the exhaust groove with a large cross-sectional area, which can quickly and fully exhaust the gas inside the cavity. The cavity with a small volume is matched with the exhaust groove with a small cross-sectional area, which can effectively prevent the metal liquid from overflowing and forming flash. This not only ensures the exhaust efficiency of each cavity and avoids defects such as porosity and looseness, but also improves the forming accuracy of the casting and ensures the forming quality of each workpiece. Attached Figure Description

[0024] Figure 1 This is a perspective view of a high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles, according to the present invention.

[0025] Figure 2 It is a three-dimensional view of the connection between the feeding assembly and the product cavity structure.

[0026] Figure 3 yes Figure 1 A 3D view omitting the mold assembly and cooling assembly.

[0027] Figure 4 This is a 3D view of the fixed mold assembly.

[0028] In the diagram, 100 is the fixed mold assembly; 110 is the fixed mold cavity block; 200 is the moving mold assembly; 210 is the moving mold cavity block; 300 is the feeding assembly; 310 is the feeding channel; 320 is the flow divider cone; 330 is the feeding sleeve; 400 is the product cavity; 410 is the first product cavity; 420 is the second product cavity; 430 is the third product cavity; 500 is the cooling assembly; and 600 is the venting assembly. Detailed Implementation

[0029] 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.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention 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 indication will also change accordingly.

[0031] The following detailed description of the specific implementation method is based on the design concept of this high-pressure casting mold. The mold of this embodiment is suitable for the integrated high-pressure casting of various metal structural parts of new energy vehicles with different specifications and structures. It can realize balanced filling, synchronous solidification and efficient mass production of multiple irregular cavities. The following embodiments are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0032] like Figure 1-4As shown, a high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles includes a fixed mold assembly 100, a moving mold assembly 200 that is movably fitted with the fixed mold assembly 100, and a feeding assembly 300 disposed between the two. It can also be equipped with auxiliary structures such as a cooling assembly 500 and an exhaust assembly 600 according to molding requirements.

[0033] When the fixed mold assembly 100 and the moving mold assembly 200 are closed and abutted, multiple product cavities 400 are formed between their mating surfaces. At least two of the multiple product cavities 400 have different shapes, structures and volumes, which can simultaneously form different types of structural parts for new energy vehicles, such as battery pack brackets, chassis connectors, small body structural parts and other dissimilar workpieces, to achieve integrated molding of multiple workpieces.

[0034] The feeding assembly 300 is the core structure of the multi-cavity filling system, including several feeding channels 310. Each feeding channel 310 is opened at the mold closing and fitting point of the fixed mold assembly 100 and the moving mold assembly 200, and the feeding end of each product cavity 400 is connected to at least one feeding channel 310. The cross-sectional area of ​​each feeding channel 310 is proportional to the volume of the product cavity 400 it connects to.

[0035] This size matching design ensures that the flow rate of molten metal into each product cavity 400 under high pressure is matched with the cavity filling requirements. This balances the filling amount of multiple product cavities 400 from the flow rate perspective, avoiding the problem of insufficient filling in some cavities and overfilling in others, and ensuring the basic accuracy of the forming of each casting.

[0036] In a preferred embodiment of this solution, the product cavity 400 is specifically configured as one first product cavity 410, two second product cavities 420 and two third product cavities 430, which are adapted to the common mold production of three different specifications of new energy vehicle structural parts.

[0037] The projected area of ​​the first product cavity 410 on the moving mold assembly 200 is defined as S1, the projected area of ​​each second product cavity 420 on the moving mold assembly 200 is defined as S2, and the projected area of ​​each third product cavity 430 on the moving mold assembly 200 is defined as S3. The size relationship that S1 is greater than or equal to twice S2 and S2 is greater than S3 corresponds to the distribution of the volume of the three workpieces from large to small.

[0038] For this cavity layout, the number and connection method of the feeding channels 310 are adapted: the first product cavity 410 is connected to two feeding channels 310, and each second product cavity 420 and each third product cavity 430 is connected to one feeding channel 310, that is, there are a total of six feeding channels 310. By adapting the large volume of the first product cavity 410 to multiple channels, and matching the small and medium volume of the second and third product cavities 430 with a single channel, combined with the design that "the cross-sectional area of ​​the channel is proportional to the volume of the cavity", the filling balance accuracy of multiple irregular cavities is further improved.

[0039] Furthermore, the layout of the six feeding channels 310 is designed to be centralized and symmetrical: all feeding channels 310 are located in the middle of the area enclosed by the first product cavity 410, the two second product cavities 420 and the two third product cavities 430, and the feeding ends of the six feeding channels 310 converge at one point, realizing the centralized diversion of molten metal, reducing pressure loss during high-pressure conveying, and ensuring that the molten metal pressure in each channel is consistent.

[0040] Meanwhile, the two feed channels 310 connecting the first product cavity 410 are arranged symmetrically, the two feed channels 310 connecting the two second product cavities 420 are arranged symmetrically, and the two feed channels 310 connecting the two third product cavities 430 are arranged symmetrically. The symmetrical flow distribution design ensures that the flow rate and direction of the molten metal flowing into the cavity of the same specification are completely consistent, avoiding the filling difference caused by the deviation of the flow channel layout and improving the consistency of castings of the same specification.

[0041] To achieve synchronous filling time of multiple product cavities 400, the feeding assembly 300 also includes a diverting cone 320. The diverting cone 320 is integrally connected to or detachably fixed to the mold closing surface of the moving mold assembly 200, and the converging end of all feeding channels 310 is connected to the diverting cone 320. The molten metal is evenly diverted to each feeding channel 310 through the diverting cone 320.

[0042] Define the length of the multiple feed channels 310 as L1, and the shortest distance between the multiple product cavities 400 and the flow divider cone 320 as L2. Perform reverse matching configuration on L1 and L2: When L1 decreases, L2 increases accordingly, or when L1 increases, L2 decreases accordingly. Through the complementary design of the flow channel length and the distance between the cavity and the flow divider cone 320, the filling time difference caused by the position and volume difference of different cavities is offset, so that the molten metal can reach the filling end of each product cavity 400 at the same time, avoiding casting defects such as air entrapment, cold shut, and shrinkage porosity caused by asynchronous filling.

[0043] The feeding assembly 300 also includes a feeding sleeve 330, which is fixedly connected to the back side of the mold closing surface of the fixed mold assembly 100. The feeding sleeve 330 is positioned directly opposite and above the flow divider cone 320. High-pressure molten metal is injected into the mold through the feeding sleeve 330 and then uniformly distributed by the flow divider cone 320. The feeding sleeve 330 ensures the stability of the molten metal injection and reduces turbulence and pressure loss during the injection process.

[0044] To improve the versatility, ease of maintenance, and changeover efficiency of the mold, this solution adopts a modular design for the structural components of the product cavity 400: Each product cavity 400 is composed of mutually compatible moving mold cavity blocks 210 and fixed mold cavity blocks 110. The moving mold mating surface is provided with mounting grooves that match each moving mold cavity block 210. All moving mold cavity blocks 210 are independently and detachably connected to the moving mold assembly 200 by means of bolts, snap-fits, etc. The fixed mold closing surface is provided with mounting grooves that match each fixed mold cavity block 110. All fixed mold cavity blocks 110 are independently and detachably connected to the fixed mold assembly 100 by means of bolts, snap-fits, etc.

[0045] This modular design enables the mold to have flexible changeover capabilities. When a product cavity 400 wears or deforms due to long-term use, or when the workpiece specifications need to be changed, it is only necessary to disassemble and replace the corresponding moving mold cavity block 210 and / or fixed mold cavity block 110 separately, without replacing the entire mold. This greatly reduces the mold maintenance cost and changeover cycle, and is suitable for the iterative production needs of new energy vehicle parts with multiple specifications and small batches.

[0046] Based on the above modular cavity structure, this solution is equipped with a cooling component 500 to achieve independent and precise temperature control of each product cavity 400, ensuring synchronous solidification of multi-cavity castings: The cooling assembly 500 includes a fixed mold cooling channel and a moving mold cooling channel. Each fixed mold cavity block 110 is independently machined with several fixed mold cooling channels, and each moving mold cavity block 210 is independently machined with several moving mold cooling channels. Each cooling channel is arranged along the cavity contour of the corresponding cavity block and covers different areas such as thick walls and thin walls of the cavity.

[0047] Each fixed mold cooling channel is equipped with several first high-pressure cooling pipes, which are fixedly connected to the fixed mold assembly 100 and communicate with the fixed mold cooling channel; each moving mold cooling channel is equipped with several second high-pressure cooling pipes, which are fixedly connected to the moving mold assembly 200 and communicate with the moving mold cooling channel.

[0048] The high-pressure cooling medium is introduced into the cooling channels of each cavity block through the first and second high-pressure cooling pipes, respectively, to achieve independent cooling of each product cavity 400. The cooling flow rate and cooling temperature of each cavity block can be adjusted individually according to the material, wall thickness and molding requirements of different workpieces, so that each casting can be cooled and formed at the optimal solidification rate, avoiding problems such as thermal stress, casting deformation and internal shrinkage caused by uneven cooling, and improving the molding quality and mechanical properties of all castings.

[0049] To address the issues of insufficient molten metal flow and high filling resistance caused by significant thickness differences in certain areas of structural components in new energy vehicles, this solution incorporates process-specific perforated structures in the cavity block: When the thickness of a local area of ​​any of the product cavities 400 is lower than a preset threshold (which is determined according to the casting material and casting process parameters), a process hole structure communicating with the product cavity 400 is processed on the moving mold cavity block 210 and / or the fixed mold cavity block 110 at the corresponding position.

[0050] The process-specific perforated structure includes an auxiliary feeding channel 310 and / or venting micropores, wherein the auxiliary feeding channel 310 extends to the thick-walled area of ​​the product cavity 400, which can replenish the thin-walled and difficult-to-fill area, increase the fluidity of the molten metal, and ensure the filling density of the area.

[0051] The venting micropores are located at the edges of thick-walled areas and in the dead corners of the cavity filling, which can promptly expel the gas inside the cavity, reduce the resistance during the molten metal filling process, and avoid porosity defects.

[0052] It should be noted that the aforementioned process-specific perforated structure will form corresponding process residue after the casting is formed. This process residue is located in the non-functional area of ​​the casting and can be quickly removed by machining without affecting the actual assembly and performance of the casting.

[0053] This solution also includes an exhaust assembly 600 to achieve differentiated and efficient exhaust for multiple cavities: The venting assembly 600 includes multiple venting grooves, which are respectively opened at the filling end of each product cavity 400. Each venting groove is connected to the inner cavity of the corresponding product cavity 400. The cross-sectional area of ​​each venting groove matches the volume of the corresponding connected product cavity 400. That is, the larger the volume of the product cavity 400, the larger the cross-sectional area of ​​the venting groove at the filling end, ensuring that the gas inside the cavity can be discharged quickly and fully, avoiding defects such as porosity and looseness caused by untimely venting. The smaller the volume of the product cavity 400, the smaller the cross-sectional area of ​​the corresponding venting groove, preventing the molten metal from overflowing from the venting groove and forming flash, further improving the forming accuracy of the casting.

[0054] The working process of the high-pressure casting mold used for integrated molding of multiple workpieces in new energy vehicles is as follows: Mold closing: The moving mold assembly 200 moves toward the fixed mold assembly 100 and abuts against the mold closing mechanism. Multiple product cavities 400 with different shapes and structures are formed between the fixed mold assembly 100 and the moving mold assembly 200. The moving mold cavity block 210 of each cavity is precisely fitted with the fixed mold cavity block 110. Feeding and filling: High-pressure molten metal is injected into the mold through the feed sleeve 330 and evenly distributed to each feed channel 310 by the diversion cone 320. Since the cross-sectional area of ​​each feed channel 310 is proportional to the volume of the corresponding cavity, and the length of the flow channel is inversely matched with the distance between the cavity and the diversion cone 320, the flow rate of the molten metal is balanced and the filling time is synchronized. The molten metal fills all product cavities 400 at the same time. Cooling and solidification: The high-pressure cooling medium is introduced into the cooling channels of each cavity block through the first and second high-pressure cooling pipes, so that each product cavity 400 is independently and precisely cooled, and each casting solidifies synchronously. The process-oriented hole structure assists in material replenishment and venting, and the venting groove fully discharges the gas at the end of the filling of each cavity. Mold opening and part removal: After all castings have solidified and formed, the moving mold assembly 200 and the fixed mold assembly 100 are separated, the formed castings are removed, and the process residue formed by the process hole structure is removed by subsequent machining to obtain the finished workpiece. Mold maintenance / replacement: When a certain cavity block is worn or the molded workpiece needs to be replaced, the corresponding moving mold cavity block 210 and / or fixed mold cavity block 110 are disassembled and replaced separately to complete the mold maintenance or replacement.

[0055] This implementation method achieves balanced filling volume and synchronized filling time for multiple irregular cavities through a triple design: "the cross-sectional area of ​​the feed channel 310 is proportional to the cavity volume", "the length of the flow channel is inversely matched with the distance between the cavity and the flow divider cone 320", and "the feed channel 310 is symmetrically and centrally arranged". This fundamentally solves the problem of uneven filling in traditional multi-cavity molds.

[0056] The modular and detachable cavity block design significantly improves the versatility and maintenance efficiency of the mold, and reduces production costs. The independent cooling channels and high-pressure cooling pipes for each cavity enable differentiated and precise temperature control, ensuring the synchronous solidification and molding quality of multiple castings. The design of process-oriented hole structures and differentiated venting grooves further solves the filling and venting problems in complex structural areas, effectively improving the yield of castings.

[0057] This mold can be adapted to the integrated high-pressure casting of various structural parts of new energy vehicles, greatly improving production efficiency and reducing the cost of producing a single part, which perfectly meets the development needs of the new energy vehicle industry for integration, lightweighting and high efficiency.

[0058] It should be noted that in this invention, 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 that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. 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 specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] Furthermore, the technical solutions of the various embodiments of the present invention 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 the present invention.

[0060] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention 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 the invention or exceeding the scope defined by the appended claims.

Claims

1. A high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles, characterized in that, include: Fixed mold assembly; A moving mold assembly is movably fitted with the fixed mold assembly, and when the fixed mold assembly and the moving mold assembly abut against each other, multiple product cavities are formed between them; wherein, At least two of the multiple product cavities have different shapes and structures for molding different predetermined types of products; A feeding assembly includes a feeding channel disposed between the fixed mold assembly and the moving mold assembly, wherein at least one feeding channel is connected to one end of each product cavity; wherein... The cross-sectional area of ​​each of the feeding channels is proportional to the volume of the product cavity it connects to, so as to balance the filling amount of the multiple product cavities.

2. The high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 1, characterized in that, The plurality of product cavities include a first product cavity, two second product cavities, and two third product cavities. The projected area of ​​the first product cavity on the moving mold assembly is S1, the projected area of ​​each second product cavity on the moving mold assembly is S2, and the projected area of ​​each third product cavity on the moving mold assembly is S3. S1 is greater than or equal to twice S2, and S2 is greater than S3. The first product cavity is connected to two feeding channels, and each of the second and third product cavities is connected to one feeding channel.

3. The high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 2, characterized in that, All six feeding channels are located in the middle of the area enclosed by the first product cavity, the two second product cavities, and the two third product cavities, and one end of each of the six feeding channels converges at a single point.

4. The high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 2, characterized in that, The two feed channels that connect the first product cavity are arranged symmetrically. The two feeding channels connecting the two second product cavities are arranged symmetrically. The two feed channels connecting the two third product cavities are arranged symmetrically.

5. A high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 1, characterized in that, The feeding assembly further includes a flow divider cone, which is connected to the moving mold assembly; The length of each of the multiple feed channels is L1, and one end of each of the multiple feed channels converges at the flow divider cone. The shortest distance between the multiple product cavities and the flow divider cone is L2; ​​wherein, The length L1 and the shortest distance L2 of the feeding channel are configured such that L2 increases when L1 decreases, or L2 decreases when L1 increases, to synchronize the filling time of the multiple product cavities.

6. The high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 1, characterized in that, Each of the product cavities is composed of a moving mold cavity block and a fixed mold cavity block; wherein... Each of the moving model cavity blocks is independently and detachably connected to the moving model assembly, and each of the fixed model cavity blocks is independently and detachably connected to the fixed model assembly.

7. A high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 5, characterized in that, The feeding assembly also includes a feeding sleeve connected to the fixed mold assembly, the feeding sleeve being located above the flow divider cone.

8. A high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 6, characterized in that, It also includes a cooling assembly, which comprises a fixed mold cooling channel and a moving mold cooling channel. Each fixed mold cavity block is independently provided with several fixed mold cooling channels, and each moving mold cavity block is independently provided with several moving mold cooling channels; wherein, Each of the fixed mold cooling channels is provided with a plurality of first high-pressure cooling pipes connected to the fixed mold assembly; Each of the moving mold cooling channels is provided with several second high-pressure cooling pipes connected to the moving mold assembly.

9. A high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 6, characterized in that, When the thickness of a local area of ​​any of the product cavities is lower than a preset threshold, a process hole structure communicating with the product cavity is provided on the moving model cavity block and / or cavity block at the corresponding position. The processable perforated structure includes: An auxiliary feeding channel extends into the thick-walled area of ​​the product cavity to increase the fluidity of the molten metal; And / or venting micropores located at the edges of thick-walled regions to discharge gas and reduce filling resistance; wherein, The aforementioned process-specific perforated structure forms process residue that can be removed by machining after the casting is formed.

10. A high-pressure casting mold for integrated molding of multiple workpieces in new energy vehicles as described in claim 1, characterized in that, It also includes an exhaust assembly, which includes multiple exhaust channels; The plurality of venting grooves are respectively disposed at the filling end of each product cavity, and the cross-sectional area of ​​each venting groove matches the volume of the product cavity to which it is connected.

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