A die-casting mold for vehicle power supply box

Abstract

This utility model discloses a die-casting mold for an on-board power supply box, including a moving mold mechanism and a fixed mold mechanism. The moving mold mechanism consists of a moving mold base plate and a moving mold core embedded in its moving mold mounting groove, the moving mold core having a moving mold cavity; the fixed mold mechanism consists of a fixed mold base plate and a fixed mold core installed in its fixed mold mounting groove, the fixed mold core having a fixed mold cavity, which, together with the moving mold cavity, constitute the product cavity after mold closing. The innovative feature is that the fixed mold cavity has independent first and second forming inserts. The first forming insert has a protruding ridge for forming deep grooves in the box, and the second forming insert has forming pins for forming precision-machined holes. In addition, the fixed mold base plate has a sprue sleeve with a gating system. This utility model, through modular insert design, solves the problems of insufficient filling of deep grooves in complex boxes and poor hole position accuracy, achieving one-time forming of high-strength, high-precision boxes, significantly improving casting quality, production efficiency, and mold life.

Description

Technical Field

[0001] This utility model relates to the field of die-casting molds, and in particular to a die-casting mold for a vehicle power supply box. Background Technology

[0002] As a key component of new energy vehicles and various electric vehicles, the vehicle power supply enclosure is structurally complex, typically featuring deep grooves, irregularly shaped holes, and thin walls, placing high demands on the die-casting process. Traditional die-casting molds often suffer from insufficient filling of deep grooves, poor surface quality, and difficulty in ensuring the precision of machined holes when forming such complex enclosures, affecting the product's sealing performance, mechanical strength, and subsequent assembly efficiency. Existing molds mostly employ an integral mold core structure, making it difficult to flexibly adjust or replace local fine features, resulting in poor mold adaptability, high maintenance costs, and the potential for uneven runner filling or air entrapment defects due to unreasonable gating system design. Therefore, a new type of die-casting mold is urgently needed, capable of achieving one-time forming of deep grooves and precision holes, while improving overall casting quality and production efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a die-casting mold for a vehicle power supply box. By setting independent first and second forming inserts in the fixed mold cavity to form deep grooves and precision-machined holes respectively, the mold can efficiently and accurately cast a vehicle power supply box with a complex internal structure in one go, ensuring the fullness of the deep groove filling and the accuracy of the hole dimensions.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A die-casting mold for an on-board power supply box, comprising: A moving mold mechanism includes a moving mold base plate and a moving mold core. The moving mold base plate is provided with a moving mold mounting groove, and the moving mold core is embedded in the moving mold mounting groove. The moving mold core is provided with a moving mold cavity. A fixed mold mechanism includes a fixed mold base plate and a fixed mold core. The fixed mold base plate is provided with a fixed mold mounting groove, and the fixed mold core is installed in the fixed mold mounting groove. The fixed mold core is provided with a fixed mold cavity, and a cavity for a vehicle power supply box is formed between the fixed mold cavity and the moving mold core. A first molding insert and a second molding insert are provided on the fixed mold cavity. The first molding insert is provided with a protruding ridge, which is used to form a deep groove for the vehicle power supply box. The second molding insert is provided with a molding pin, which is used to form a machining hole for the vehicle power supply box. A sprue sleeve is also provided on the fixed mold base plate, and the sprue sleeve is provided with a sprue that communicates with the cavity.

[0005] According to an embodiment of this utility model, a die-casting mold for a vehicle power supply box has at least the following beneficial effects: This utility model employs a split moving mold and fixed mold mechanism, and innovatively sets independent first and second forming inserts on the fixed mold cavity for forming deep grooves and precision-machined holes, respectively. This allows the mold to efficiently and accurately cast vehicle power supply boxes with complex internal structures in one operation, greatly ensuring the fullness of the deep groove filling and the dimensional accuracy of the holes. The moving mold core and fixed mold core are embedded, improving the overall rigidity and stability of the mold, effectively preventing mold expansion and deformation, and ensuring uniform product wall thickness and consistent shape. A reasonable gating design ensures stable filling of the molten metal, comprehensively solving the problems of numerous casting defects, low yield, and difficult maintenance caused by the structural limitations of traditional molds, significantly improving the degree of production automation and economic efficiency.

[0006] According to some embodiments of the present invention, the moving mold base plate is provided with side grooves on both sides leading to the moving mold core, and the side grooves are provided with side modules and side cylinders that drive the side modules to move.

[0007] The advantage is that the side module design driven by the side cylinder enables the mold to perform lateral core pulling, allowing the mold to form complex box structures with lateral grooves or holes, which greatly expands the mold's process applicability and product design flexibility.

[0008] According to some embodiments of the present invention, one of the side modules is provided with a flow divider cone that cooperates with the gating sleeve.

[0009] The advantage is that the design of the flow divider cone can effectively guide and disperse the molten metal flow injected from the sprue bushing, allowing it to fill the cavity smoothly and evenly, thereby reducing turbulence and air entrapment, and significantly improving the internal quality of the casting.

[0010] According to some embodiments of the present invention, the fixed mold core is provided with a slag-filled opening that communicates with the cavity.

[0011] The advantage is that the slag trap provides a concentrated collection area for cold material, impurities, and leading oxide scale in the mold cavity, which can effectively remove these harmful substances, thereby obtaining high-quality castings with a purer internal structure and a smoother surface quality.

[0012] According to some embodiments of the present invention, an exhaust groove communicating with the slag bag opening is provided between the moving mold base plate and the fixed mold base plate.

[0013] The advantage is that the venting groove, together with the slag bag opening, forms a highly efficient channel for the discharge of gas and impurities, which greatly improves the venting performance of the mold and effectively prevents defects such as insufficient burning and porosity caused by trapped gas in the casting.

[0014] According to some embodiments of the present invention, the first molded insert is provided with two parallel protruding ridges.

[0015] The advantage is that the double-convex rib structure design can efficiently form two parallel deep grooves inside the box in one go, which not only ensures the precise relative position between the two grooves, but also greatly improves the forming efficiency.

[0016] According to some embodiments of the present invention, the first molded insert is provided with a cooling pipe arranged in the direction of the protruding ridge.

[0017] The benefits are that the cooling pipes can provide directional cooling for the high heat load area of ​​deep groove forming, which significantly accelerates the solidification rate of the area, thereby balancing the temperature field of the entire mold, shortening the forming cycle, and improving the microstructure of the casting.

[0018] According to some embodiments of the present invention, the second molding insert is provided with a mounting hole, and the molding needle is installed in the mounting hole.

[0019] The advantage is that the mounting hole structure provides a stable and precise mounting and positioning reference for the forming needle, ensuring the positional stability of the forming needle under the impact of high-pressure melt, thereby guaranteeing the dimensional accuracy and perpendicularity of the formed hole.

[0020] According to some embodiments of the present invention, the fixed mold base plate is provided with guide posts, and the moving mold base plate is provided with guide sleeves that cooperate with the guide posts.

[0021] The benefits are that the precise fit between the guide pillars and guide sleeves ensures accurate alignment and closure of the moving and fixed molds during mold closing, effectively preventing problems such as flash and uneven wall thickness caused by misalignment, and ensuring the consistency of products in mass production.

[0022] According to some embodiments of the present invention, the moving mold mechanism is further provided with an ejection mechanism on the side opposite to the fixed mold mechanism.

[0023] The benefits are that the ejection mechanism enables automated demolding after casting, avoiding damage to the casting caused by manual operation, ensuring the continuity and safety of the production process, and improving overall production efficiency.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an embodiment of the present utility model; Figure 2 for Figure 1 Schematic diagram of the moving mold mechanism; Figure 3 for Figure 1 Schematic diagram of the center mold mechanism: Figure 4 for Figure 3 A schematic diagram of the first molded insert; Figure 5 for Figure 3 A schematic diagram of the second molded insert; Figure 6 for Figure 5 Enlarged diagram of point A in the middle.

[0027] Reference numerals: Moving mold base plate 100, moving mold core 110, moving mold cavity 120, fixed mold base plate 130, fixed mold core 140, fixed mold cavity 150, first forming insert 160, second forming insert 170, protrusion 180, forming pin 190, sprue bushing 200, sprue 210, side module 220, side cylinder 230, runner cone 240, slag port 250, venting groove 260, mounting hole 270, guide post 280, guide sleeve 290, ejection mechanism 300. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following is for reference. Figures 1-6 A die-casting mold for an on-board power supply box is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0033] like Figures 1-3 As shown, a die-casting mold for an automotive power supply box mainly consists of two parts: a moving mold mechanism and a fixed mold mechanism. The moving mold mechanism includes a robust moving mold base plate 100 with a regularly machined moving mold mounting groove. A precision-machined moving mold core 110 is tightly fitted into this mounting groove, and the moving mold core 110 has a moving mold cavity 120 that forms half the shape of the product. The fixed mold mechanism includes a fixed mold base plate 130, which also has a fixed mold mounting groove (the moving mold mounting groove and the fixed mold mounting groove are not shown in the figure) for mounting a fixed mold core 140. The fixed mold core 140 has a fixed mold cavity 150. When the moving mold and the fixed mold are closed, the moving mold cavity 120 and the fixed mold cavity 150 together form the complete cavity of the final molded automotive power supply box.

[0034] like Figures 4-6As shown, the core innovation of this utility model lies in the modular design of the fixed mold cavity 150. Instead of integral machining, key parts of the fixed mold cavity 150 are separately fitted with independently manufactureable and replaceable first forming insert 160 and second forming insert 170. The first forming insert 160 has precisely machined raised ridges 180, which are directly used to form deep groove features with strict structural requirements on the casting. The second forming insert 170 is equipped with high-precision forming pins 190, specifically for forming various precision-machined holes on the molding box, such as mounting holes and wire holes. This modular design allows for individual material selection, heat treatment, and precision machining of easily worn or high-precision local features, greatly facilitating maintenance and replacement, and ensuring sufficient molten metal filling of the deep grooves with stable and accurate hole dimensions. To inject molten metal into the cavity, a sprue sleeve 200 is installed on the fixed mold base plate 130. The sprue 210 inside the sprue sleeve 200 communicates with the cavity, forming the feeding channel for die casting production.

[0035] To further enhance the functionality of the mold, such as Figure 2 As shown, side grooves (not shown in the figure) are also formed on both sides of the moving mold base plate 100. Movable side modules 220 are installed within these grooves and are driven to move by side cylinders 230. This side-oriented core-pulling mechanism allows the mold to form boxes with complex geometric features such as side recesses or side holes, significantly expanding the design freedom of the product. One of the side modules 220 also integrates a flow divider cone 240, which cooperates with the outlet of the sprue sleeve 200 to effectively guide and disperse the high-speed injected molten metal, ensuring it smoothly and evenly fills all corners of the cavity, reducing turbulence and air entrapment, and improving the internal quality of the casting.

[0036] Regarding exhaust and slag removal, such as Figure 3 As shown, a slag trap opening 250 is provided on the fixed mold core 140, which communicates with the end of the cavity, to collect cold material and oxidation impurities. At the same time, venting grooves 260, which communicate with the slag trap opening 250, are also machined on the mold mating surfaces of the moving mold base plate 100 and the fixed mold base plate 130, together forming an efficient venting system that effectively avoids defects such as porosity and uneven filling in the casting.

[0037] To address the heat concentration in the deep groove forming area, a cooling pipe (not shown in the figure) is embedded inside the first forming insert 160. The flow of coolant can provide targeted and enhanced cooling to this area, equalizing the mold temperature, shortening cooling time, and improving the crystallization structure of the casting. For example... Figure 6As shown, the second molding insert 170 has mounting holes 270 machined therein, in which the molding pin 190 is securely installed. This structure ensures the positional accuracy of the molding pin 190 under high-pressure impact, thereby guaranteeing the size and perpendicularity of the molded hole. To ensure mold closing accuracy, guide pillars 280 are installed on the fixed mold base plate 130, and guide sleeves 290 that are precisely matched with them are installed on the moving mold base plate 100, ensuring accurate alignment and uniform product wall thickness with each mold closing.

[0038] It is worth mentioning that an ejection mechanism 300 is also provided on the back of the moving mold mechanism, which mainly includes ejector pins, ejector pin fixing plates, ejector pin pads, and ejection guide pillars. After the mold opens, the ejector rod of the injection molding machine pushes the ejector pin fixing plate and the ejector pins mounted on it to move forward, thereby smoothly and evenly ejecting the molded casting from the moving mold core, realizing automated production and avoiding deformation or damage to the casting.

[0039] The overall working process of the mold is as follows: First, the side cylinder 230 drives the side module 220 and the flow divider cone 240 to the predetermined position, and the moving and fixed molds are precisely closed under the guidance of the guide pillar 280 and the guide sleeve 290; then, the die casting machine injects molten metal into the cavity at high speed through the sprue sleeve 200 and the sprue 210. The molten metal is guided by the flow divider cone 240 to fill the cavity, and the gas and cold material are discharged through the venting groove 260 and the slag outlet 250; after holding pressure and cooling, the moving and fixed molds separate, the side cylinder 230 drives the side module 220 to complete the core pulling, and then the ejector mechanism 300 moves to eject the casting, completing one production cycle. This utility model, through the combination design of split mold core and modular inserts, combined with side core pulling, optimized gating and drainage system and precision guide ejection mechanism 300, effectively solves the technical problems of insufficient filling of deep grooves, poor hole accuracy, many defects and low efficiency in complex vehicle power supply boxes. It realizes one-time high-quality molding of high-strength, high-precision, and complex box structures, significantly improves product yield, production efficiency and mold life, and has good economic benefits.

[0040] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A die-casting mold for a vehicle power supply box, characterized in that, include: The moving mold mechanism includes a moving mold base plate (100) and a moving mold core (110). The moving mold base plate (100) is provided with a moving mold mounting groove, and the moving mold core (110) is embedded in the moving mold mounting groove. The moving mold core (110) is provided with a moving mold cavity (120). The fixed mold mechanism includes a fixed mold base plate (130) and a fixed mold core (140). The fixed mold base plate (130) is provided with a fixed mold mounting groove. The fixed mold core (140) is installed in the fixed mold mounting groove. The fixed mold core (140) is provided with a fixed mold cavity (150). The fixed mold cavity (150) and the moving mold core (110) form a cavity for the vehicle power supply box. The fixed mold cavity (150) is provided with a first molding insert (160) and a second molding insert (17). 0), the first molding insert (160) is provided with a protruding ridge (180), the protruding ridge (180) is used to form a deep groove of the vehicle power supply box, the second molding insert (170) is provided with a molding pin (190), the molding pin (190) is used to form a machining hole of the vehicle power supply box, the fixed mold base plate (130) is also provided with a sprue sleeve (200), the sprue sleeve (200) is provided with a sprue (210) communicating with the cavity.

2. The vehicle-mounted power supply box die-casting mold according to claim 1, characterized in that, The moving mold base plate (100) has side grooves on both sides leading to the moving mold core (110), and the side grooves are provided with side modules (220) and side cylinders (230) that drive the side modules (220) to move.

3. The vehicle-mounted power supply box die-casting mold according to claim 2, characterized in that, One of the side modules (220) is provided with a flow divider cone (240) that mates with the gating sleeve (200).

4. The vehicle-mounted power supply box die-casting mold according to claim 1, characterized in that, The fixed mold core (140) is provided with a slag sac opening (250) that communicates with the cavity.

5. The vehicle-mounted power supply box die-casting mold according to claim 4, characterized in that, An exhaust groove (260) communicating with the slag bag opening (250) is provided between the moving mold base plate (100) and the fixed mold base plate (130).

6. The vehicle-mounted power supply box die-casting mold according to claim 1, characterized in that, The first molded insert (160) has two parallel protrusions (180).

7. The vehicle-mounted power supply box die-casting mold according to claim 1, characterized in that, The first molded insert (160) is provided with a cooling pipe arranged in the direction of the protruding ridge (180).

8. The vehicle-mounted power supply box die-casting mold according to claim 1, characterized in that, The second molding insert (170) is provided with a mounting hole (270), and the molding pin (190) is installed in the mounting hole (270).

9. The vehicle-mounted power supply box die-casting mold according to claim 1, characterized in that, The fixed mold base plate (130) is provided with a guide post (280), and the moving mold base plate (100) is provided with a guide sleeve (290) that cooperates with the guide post (280).

10. A die-casting mold for a vehicle-mounted power supply box according to claim 1, characterized in that, The moving mold mechanism is also provided with an ejection mechanism (300) on the side opposite to the fixed mold mechanism.

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