An electric control box shell die-casting die

Abstract

The utility model provides a kind of die casting die of electric control box shell belongs to die casting die technical field, include: upper die and lower die, upper die is provided with feed inlet and feed runner, lower die has only die core and core-pulling assembly, core-pulling assembly includes sliding block, forming rod and core-pulling drive element, upper die and lower die form cavity after moulding, forming rod is inserted into cavity in the moulding state, for forming the structural features on electric control box shell, the layout of this feed runner and cavity position effectively reduces the flow resistance of metal liquid in filling process, so that molten metal liquid can enter mould cavity in more stable, smooth manner, reduce the generation of blowhole, help to obtain organization compact, surface quality excellent die casting, by the synergistic effect of sliding block and forming rod and other complex forming mechanism, it can provide technical support for manufacturing complex metal electric control box shell parts.

Description

Technical Field

[0001] This utility model belongs to the field of die-casting mold technology, and relates to a die-casting mold for an electrical control box housing. Background Technology

[0002] In the field of modern industrial manufacturing, electrical control boxes are core components in power systems, automation equipment and various electromechanical devices, and are widely used in many scenarios such as new energy vehicles, rail transit, industrial control, and communication base stations. As a key structural component, the electrical control box shell not only needs to have good mechanical strength and dimensional stability to protect the internal electronic components from the influence of the external environment, but also needs to meet the requirements of lightweight, heat dissipation and integrated molding of complex structures.

[0003] Especially with the design trend of integrating cooling functions into the housing of electrical control boxes, complex water channel hole structures are often required to be formed on the side walls of the housing in order to achieve efficient heat dissipation of internal components. These lateral water channel holes are usually characterized by slender and long channels, large depth, high forming precision requirements, and the need for sealing of inner and outer surfaces.

[0004] In summary, although some existing technical solutions have solved problems such as porosity in the die casting of electrical control box housing parts, there is still considerable room for improvement in the forming of lateral water channel holes with high requirements. Summary of the Invention

[0005] The purpose of this utility model is to address the aforementioned problems existing in the prior art by proposing a die-casting mold for an electrical control box housing, comprising: The upper mold is equipped with a feed inlet and a feed channel; The lower mold is provided with a mold core and a core-pulling assembly. The core-pulling assembly includes a sliding block, a forming rod, and a core-pulling driving element. The core-pulling driving element is connected to the lower mold, the sliding block is slidably connected to the lower mold, and the forming rod is connected to the sliding block. After the upper mold and the lower mold are closed, a cavity is formed. The feed port is connected to the cavity through the feed channel. The forming rod extends into the cavity when the mold is closed to form structural features on the electrical control box housing. It also includes water-cooling channels, which are disposed in the upper mold and the lower mold; The forming rod has a cooling channel inside, and the cooling channel is connected to the cooling passage.

[0006] In the die-casting mold for an electrical control box housing described above, both the mold core and the sliding block are provided with exhaust channels, the lower mold is provided with an exhaust groove that communicates with the outside, one end of the exhaust channel is connected to the cavity, and the other end is connected to the exhaust groove.

[0007] In the die-casting mold of the above-mentioned electrical control box housing, the mold core and the sliding block are further provided with slag pocket grooves, and the exhaust channel is connected to the cavity through the slag pocket grooves.

[0008] In the die-casting mold for an electrical control box housing described above, there are four sliding blocks and four core-pulling driving elements. The four sliding blocks are slidably disposed on the four sides of the lower mold, and the core-pulling driving elements can drive the sliding blocks to approach the mold core.

[0009] In the die-casting mold for an electrical control box housing described above, there are two forming rods, and the two forming rods are respectively connected to two opposing sliding blocks to form openings at both ends of the electrical control box housing.

[0010] In the die-casting mold of the aforementioned electrical control box housing, the core-pulling assembly further includes a slider seat, and the slider block is connected to the output shaft of the core-pulling drive element through the slider seat.

[0011] In the die-casting mold of the above-mentioned electrical control box housing, one end of the forming rod passes through the sliding block along the core-pulling direction and is detachably connected to the sliding block, and the other end of the forming rod abuts against the slider seat.

[0012] In the die-casting mold for an electrical control box housing described above, a limiting ring is provided at one end of the forming rod, a limiting groove is provided on the sliding block, the limiting ring is accommodated in the limiting groove, and the limiting ring abuts against the slider seat.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This layout of the feed channel and cavity effectively reduces the flow resistance of the molten metal during the filling process, allowing the molten metal to enter the mold cavity more smoothly and steadily, reducing the generation of porosity. The water-cooling channel in the mold and the introduction of circulating cooling water can efficiently remove the large amount of heat transferred to the mold during the filling and solidification of the molten die-casting alloy, which helps to obtain die-cast parts with dense structure and excellent surface quality. Through the synergistic action of complex forming mechanisms such as sliding blocks and forming rods, it can provide technical support for manufacturing complex metal electrical control box housing parts. The forming rod has a specially designed cooling channel inside, which allows the metal around the hole to solidify evenly and quickly, significantly improving the forming quality of the side water channel holes of the casting.

[0014] 2. By setting two forming rods that are respectively connected to the relative sliding blocks, after die casting is completed, the forming rods can be pulled away from the casting along with the sliding blocks, ensuring that the casting can be safely demolded.

[0015] 3. The forming rod has a specially designed cooling channel inside. The channel arranged along its axial direction inside the forming rod is used to guide the cooling water to flow inside, so that the metal around the hole can solidify evenly and quickly, which significantly improves the forming quality of the side water channel hole of the casting. Attached Figure Description

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

[0017] Figure 2 This is a top view of the interior of the mold of this utility model.

[0018] Figure 3 This is a partial schematic diagram of the core-pulling assembly of this utility model.

[0019] Figure 4 This is a schematic diagram of the forming rod of this utility model.

[0020] Figure 5 This is a schematic diagram of the sliding block of this utility model.

[0021] In the picture: 1. Upper mold; 11. Inlet; 12. Inlet channel; 2. Lower mold; 21. Mold core; 211. Venting channel; 212. Slag pocket groove; 22. Core pulling assembly; 221. Sliding block; 2211. Limiting groove; 222. Forming rod; 2221. Limiting ring; 223. Core pulling drive element; 224. Slider seat; 23. Venting groove; 3. Cavity. Detailed Implementation

[0022] 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.

[0023] 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 certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, 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. Thus, features 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 and specifically defined.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] 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.

[0027] The specific embodiments described herein are merely illustrative examples of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the patent of this utility model or exceeding the scope defined by the appended claims.

[0028] like Figures 1-5 As shown, a die-casting mold for an electrical control box housing includes: an upper mold 1 and a lower mold 2.

[0029] The upper mold 1 is provided with a feed inlet 11 and a feed channel 12.

[0030] The lower mold 2 is provided with a mold core 21 and a core-pulling assembly 22. The core-pulling assembly 22 includes a sliding block 221, a forming rod 222 and a core-pulling driving element 223. The core-pulling driving element 223 is connected to the lower mold 2. The sliding block 221 is slidably connected to the lower mold 2. The forming rod 222 is connected to the sliding block 221.

[0031] After the upper mold 1 and the lower mold 2 are closed, a cavity 3 is formed. The feed port 11 is connected to the cavity 3 through the feed channel 12. The forming rod 222 extends into the cavity 3 in the closed state to form structural features on the electrical control box housing.

[0032] It also includes a water-cooling channel (not shown in the figure), which is located in the upper mold 1 and the lower mold 2.

[0033] The forming rod 222 has a cooling channel inside (not shown in the figure), and the cooling channel is connected to the cooling channel.

[0034] Specifically, during the die casting process, the molten metal is injected into the mold system through the nozzle of the die casting machine under high pressure. The extension direction of the feed channel 12 of the mold is basically in the same plane or approximately coplanar with the outer surface of one side of the final formed electrical control box housing. At the same time, the sliding block 221 and the forming rod 222 in the core pulling assembly 22 are precisely positioned and effectively participate in the forming of the complex features of the electrical control box housing after the mold is closed.

[0035] In this embodiment, the layout of the feed channel 12 and the cavity 3 effectively reduces the flow resistance of the molten metal during the filling process, allowing the molten metal to enter the mold cavity 3 more smoothly and steadily, reducing the generation of porosity. The water-cooling channel in the mold and the introduction of circulating cooling water can efficiently remove the large amount of heat transferred to the mold during the filling and solidification of the molten die-casting alloy, which helps to obtain die-cast parts with dense structure and excellent surface quality. Through the synergistic effect of the sliding block 221 and the forming rod 222 and other complex forming mechanisms, technical support can be provided for manufacturing complex metal electrical control box housing parts. The forming rod 222 has a specially designed cooling channel inside, which allows the metal around the hole to solidify uniformly and quickly, significantly improving the forming quality of the side water channel holes of the casting.

[0036] By setting up water-cooling channels in the mold and introducing circulating cooling water, the large amount of heat transferred to the mold during the filling and solidification process of the molten die-casting alloy can be efficiently discharged. This not only significantly accelerates the solidification speed of the casting and shortens the mold opening time, but also greatly compresses the die-casting cycle and improves the production pace and overall production efficiency per unit time.

[0037] Channels arranged axially inside the forming rod 222 are used to guide the flow of cooling water within it. like Figures 1-5 As shown, based on the above embodiment, both the mold core 21 and the sliding block 221 are provided with exhaust channels 211, and the lower mold 2 is provided with an exhaust groove 23 that communicates with the outside. One end of the exhaust channel 211 is connected to the cavity 3, and the other end is connected to the exhaust groove 23.

[0038] Specifically, one end of the exhaust channel 211 is open to the surface of the mold core 21 and the movable block, and is directly connected to the cavity 3. During the filling process of the cavity 3, the original air and the gas entrained during the flow of the molten metal are guided out. The other end of the exhaust channel 211 extends and is connected to the exhaust groove 23 provided on the lower mold 2. The exhaust groove 23 is connected to the outside atmosphere.

[0039] In this embodiment, as the molten metal rapidly fills the cavity 3, the compressed gas is sequentially pushed to the venting system area along the forward direction of the cavity 3, and enters the venting groove 23 of the lower mold 2 through the venting channels 211 on the mold core 21 and the sliding block 221, and is finally discharged smoothly outside the mold. This venting structure can not only effectively avoid insufficient filling caused by local air resistance, but also improve venting efficiency.

[0040] like Figures 1-5 As shown, based on the above embodiment, the mold core 21 and the sliding block 221 are also provided with slag-filling grooves 212, and the exhaust channel 211 is connected to the cavity 3 through the slag-filling grooves 212.

[0041] Specifically, the slag bag groove 212 is usually set at the end of the filling path of the cavity 3. Its structure is a groove with a certain depth and volume, which can effectively collect the low-temperature molten metal, surface oxide film and entrained gas and impurities at the front of the filling process.

[0042] In this embodiment, the exhaust channel 211 is not directly connected to the cavity 3, but is indirectly connected to the cavity 3 through the slag packing groove 212, realizing the integrated coordination of exhaust and slag discharge, which not only improves the exhaust efficiency, but also enhances the control capability of casting defects.

[0043] like Figures 1-5 As shown, based on the above embodiment, the number of sliding blocks 221 and core-pulling driving elements 223 is four. The four sliding blocks 221 are slidably disposed on the four sides of the lower mold 2, and the core-pulling driving elements 223 can drive the sliding blocks 221 to approach the mold core 21.

[0044] Specifically, there are four sliding blocks 221 and four pre-made core-pulling drive elements 223. These four sliding blocks 221 are slidably arranged in the four lateral positions of the lower mold 2 to form an all-round lateral forming system.

[0045] In this embodiment, this four-way layout can effectively cover the complex features of the outer surface of electrical control box housing parts in multiple directions, and the modular design also facilitates later maintenance, replacement and process debugging.

[0046] like Figures 1-5 As shown, based on the above embodiment, there are two forming rods 222, and the two forming rods 222 are respectively connected to two opposite sliding blocks 221 to form openings at both ends of the electrical control box housing.

[0047] Specifically, there are two forming rods 222. These two forming rods 222 are connected to two oppositely arranged sliding blocks 221. During the mold closing process, when the two opposite sliding blocks 221 slide towards the mold core 21 under the push of the core pulling drive element 223 and reach the predetermined forming position, the two forming rods 222 connected to them also extend into the cavity 3 at the same time. The molten metal fills the surrounding space under high pressure injection, and finally forms an opening structure at both ends of the electrical control box housing.

[0048] In this embodiment, by setting two forming rods 222 that are respectively connected to the relative sliding block 221, after the die casting is completed, the forming rods 222 can be pulled away from the casting along with the sliding block 221, ensuring that the casting can be safely demolded.

[0049] like Figures 1-5 As shown, based on the above embodiment, the core-pulling assembly 22 further includes a slider seat 224, and the sliding block 221 is connected to the output shaft of the core-pulling drive element 223 through the slider seat 224.

[0050] Specifically, the sliding block 221, as a core forming component that directly participates in the formation of the mold cavity 3, needs to withstand the continuous heat radiation and high pressure impact of the high-temperature molten metal during the die casting cycle. It is prone to failure modes such as thermal fatigue cracks, sticking, wear or deformation. Therefore, special hot work mold steel with excellent thermal fatigue resistance, high hardness, good wear resistance and sufficient toughness is usually selected. In contrast, the main function of the slider seat 224 is to act as a mechanical connection medium to reliably transmit the output power of the core pulling drive element 223 to the sliding block 221. Therefore, the requirements for the high temperature resistance and wear resistance of the material are relatively low.

[0051] In this embodiment, by using differentiated material selection for the sliding block 221 and the slider seat 224, multiple optimization goals of lightweight structure, high response efficiency and manufacturing economy are achieved while ensuring the reliability of the mold and the molding accuracy.

[0052] like Figures 1-5 As shown, based on the above embodiment, one end of the forming rod 222 passes through the sliding block 221 along the core-pulling direction and is detachably connected to the sliding block 221, while the other end of the forming rod 222 abuts against the slider seat 224.

[0053] Specifically, one end of the forming rod 222 passes through the sliding block 221 along the core-pulling direction and then extends into the mold cavity 3 to form the inner contour surface of the side water channel hole of the casting. The other end extends to the outside of the sliding block 221 and axially abuts against the slider seat 224, thereby fixing the relative position of the forming rod 222 in the mold by mechanical limiting.

[0054] In this embodiment, since one end of the forming rod 222 extends through the sliding block 221 into the cavity 3 for forming, most of the forming rods 222 are accommodated inside the sliding block 221. This not only ensures the stability of the position of the forming rod 222, but also forms a good force transmission mechanism by having the other end abut against the slider seat 224.

[0055] like Figures 1-5 As shown, based on the above embodiment, one end of the forming rod 222 is provided with a limiting ring 2221, the sliding block 221 is provided with a limiting groove 2211, the limiting ring 2221 is accommodated in the limiting groove 2211, and the limiting ring 2221 abuts against the slider seat 224.

[0056] In this embodiment, by setting a limiting ring 2221 on the forming rod 222 and opening a corresponding limiting groove 2211 on the sliding block 221, the limiting ring 2221 is both accommodated by the limiting groove 2211 and abuts against the slider seat 224, forming a dual constraint of radial and axial forces. This not only improves the stability of the forming rod 222 during the die casting process, but also facilitates the subsequent maintenance and replacement of the forming rod 222.

Claims

1. A die-casting mold for an electrical control box housing, characterized in that, include: The upper mold is equipped with a feed inlet and a feed channel; The lower mold is provided with a mold core and a core-pulling assembly. The core-pulling assembly includes a sliding block, a forming rod, and a core-pulling driving element. The core-pulling driving element is connected to the lower mold, the sliding block is slidably connected to the lower mold, and the forming rod is connected to the sliding block. After the upper mold and the lower mold are closed, a cavity is formed. The feed port is connected to the cavity through the feed channel. The forming rod extends into the cavity when the mold is closed to form structural features on the electrical control box housing. It also includes water-cooling channels, which are disposed in the upper mold and the lower mold; The forming rod has a cooling channel inside, and the cooling channel is connected to the water cooling channel.

2. The die-casting mold for an electrical control box housing as described in claim 1, characterized in that: Both the mold core and the sliding block are provided with venting channels. The lower mold is provided with a venting groove that communicates with the outside. One end of the venting channel is connected to the cavity, and the other end is connected to the venting groove.

3. The die-casting mold for an electrical control box housing as described in claim 2, characterized in that: The mold core and the sliding block are also provided with slag pockets, and the venting channel is connected to the cavity through the slag pockets.

4. The die-casting mold for an electrical control box housing as described in claim 1, characterized in that: The number of sliding blocks and core-pulling driving elements is four. The four sliding blocks are slidably disposed on the four sides of the lower mold, and the core-pulling driving element can drive the sliding blocks to approach the mold core.

5. The die-casting mold for an electrical control box housing as described in claim 4, characterized in that: The number of forming rods is two, and the two forming rods are respectively connected to two opposite sliding blocks to form openings at both ends of the electrical control box housing.

6. The die-casting mold for an electrical control box housing as described in claim 1, characterized in that: The core-pulling assembly also includes a slider seat, and the slider is connected to the output shaft of the core-pulling drive element through the slider seat.

7. The die-casting mold for an electrical control box housing as described in claim 6, characterized in that: One end of the forming rod passes through the sliding block along the core-pulling direction and is detachably connected to the sliding block, while the other end of the forming rod abuts against the slider seat.

8. The die-casting mold for an electrical control box housing as described in claim 7, characterized in that: One end of the forming rod is provided with a limiting ring, the sliding block is provided with a limiting groove, the limiting ring is accommodated in the limiting groove, and the limiting ring abuts against the slider seat.

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