Die-casting die for an electronic pump body

Abstract

The utility model provides a kind of die-casting die of electronic pump pump body, belong to die-casting die technical field, include: upper die and lower die, top is provided with feed inlet and feed channel, lower die is provided with mould core and core-pulling assembly, when upper die and lower die close mould, multiple sliding blocks are close to mould core and form cavity, feed inlet is located at the top edge of cavity, so that molten metal first fills upper region of cavity, air is orderly extruded downward and outward, this " from top to bottom " filling combines " reverse exhaust " flow path, greatly reduce the risk that gas is trapped in cavity interior and forms bubble, air hole, especially suitable for deep cavity region difficult to exhaust in high narrow cavity.

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 electronic pump body. Background Technology

[0002] With the rapid development of new energy vehicles, intelligent water pumps and precision electromechanical equipment, electronic pumps, as key power control components, are facing increasingly complex structures and demanding performance requirements. The pump body of an electronic pump is usually made of aluminum alloy or magnesium alloy die casting, characterized by thin walls, complex flow channels, multiple sealing surfaces, and high mechanical performance requirements. Therefore, the die casting mold used to form this type of pump body must have high precision, good venting, efficient cooling capacity, and a reliable side core pulling mechanism to ensure that the casting is dimensionally stable, internally dense, and free from defects such as porosity and cold shuts.

[0003] In summary, some existing technical solutions using traditional feeding positions in the die-casting process of electronic pump bodies still suffer from problems such as poor venting, indicating significant room for improvement. Summary of the Invention

[0004] 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 electronic pump body, comprising:

[0005] The upper mold is equipped with a feed inlet and a feed channel;

[0006] The lower mold is provided with a mold core and a core-pulling assembly. The core-pulling assembly includes multiple sliding blocks, which can move towards or away from the mold core. When the upper mold and the lower mold are closed, the multiple sliding blocks approach the mold core to form a cavity. The feed port is connected to the cavity through the feed channel.

[0007] In the die-casting mold of the above-mentioned electronic pump body, the core-pulling assembly includes two auxiliary sliding blocks and one main sliding block, and the two auxiliary sliding blocks and the main sliding block can abut against each other as they approach the mold core.

[0008] In the die-casting mold of the above-mentioned electronic pump body, the bottom surface of the upper mold is provided with two inclined guide pillars, and the two auxiliary sliding blocks are provided with insertion holes. The two inclined guide pillars are inclined and are respectively partially accommodated in the insertion holes of the two auxiliary sliding blocks.

[0009] In the die-casting mold of the above-mentioned electronic pump body, the core-pulling assembly further includes a core-pulling driving element, which is disposed in the lower mold, and the output shaft of the core-pulling driving element is connected to the main sliding block.

[0010] In the die-casting mold of the above-mentioned electronic pump body, the core-pulling assembly further includes a main slider seat, and the output shaft of the core-pulling drive element is connected to the main sliding block through the main slider seat.

[0011] In the die-casting mold of the above-mentioned electronic pump body, the core-pulling assembly further includes a secondary slider seat, the insertion hole is disposed in the secondary slider seat, and the secondary slider seat is connected to the secondary sliding block.

[0012] In the die-casting mold of the above-mentioned electronic pump body, the mold core is provided with an exhaust channel, the lower mold is provided with an exhaust groove, one end of the exhaust channel is connected to the cavity, and the other end of the exhaust channel is connected to the exhaust groove.

[0013] In the die-casting mold of the above-mentioned electronic pump body, the mold core is further provided with a slag-filled groove, and the exhaust channel is connected to the cavity through the slag-filled groove.

[0014] The die-casting mold for the electronic pump body described above also includes a water-cooling channel, which is disposed in the lower mold and the core-pulling assembly.

[0015] In the die-casting mold of the above-mentioned electronic pump body, the bottom surface of the upper mold is also provided with a shaping column. When the upper mold and the lower mold are closed, one end of the shaping column contacts the mold core, and the shaping column is provided with the water cooling channel.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The feed port is located at the top edge of the cavity, so that the molten metal first fills the upper part of the cavity, while the air is squeezed downward and outward in an orderly manner. This "top-down" filling combined with the "reverse exhaust" flow path greatly reduces the risk of gas being trapped inside the cavity and forming bubbles and pores. It is especially suitable for deep cavity areas in tall and narrow cavities where it is difficult to exhaust air.

[0018] 2. Since the lifting and lowering of the upper mold can drive the movement of the secondary sliding block, there is no need to configure an additional independent driving component to push the secondary sliding block to perform core pulling or resetting actions. This simplifies the overall structure of the mold, reduces manufacturing costs and maintenance difficulty. At the same time, this linkage design ensures that the movement of the secondary sliding block is highly synchronized with the opening and closing action of the upper mold, effectively avoiding motion interference or positioning deviation caused by asynchronous driving timing or response delay.

[0019] 3. When the mold is closed, the shaping column on the bottom surface of the upper mold passes through the cavity and contacts the mold core. During die casting, the molten metal is injected into the cavity. The outer circumferential surface of the shaping column becomes the key part for the formation of the internal channels of the casting. The shaping column is equipped with a water cooling channel, which can significantly accelerate the local solidification speed of the casting and effectively reduce the generation of internal defects such as shrinkage cavities. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the interior of the die-casting mold of this utility model.

[0022] Figure 3 This is a schematic diagram of the mold core of this utility model.

[0023] Figure 4 for Figure 3 A magnified view of detail A.

[0024] Figure 5 This is a schematic diagram of the electronic pump body.

[0025] In the picture:

[0026] 1. Upper mold; 11. Inlet; 12. Inlet channel; 13. Angled guide post; 14. Shaping post; 2. Lower mold; 21. Mold core; 211. Venting channel; 212. Slag pocket groove; 22. Core pulling assembly; 221. Secondary sliding block; 2211. Insertion hole; 222. Main sliding block; 223. Core pulling drive element; 224. Main slider seat; 225. Secondary slider seat; 23. Venting groove; 3. Cavity; 4. Water cooling channel. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] like Figures 1-5 As shown, a die-casting mold for an electronic pump body includes an upper mold 1 and a lower mold 2.

[0034] The upper mold 1 is provided with a feed inlet 11 and a feed channel 12.

[0035] The lower mold 2 is provided with a mold core 21 and a core pulling assembly 22. The core pulling assembly 22 includes multiple sliding blocks, which can move towards or away from the mold core 21. When the upper mold 1 and the lower mold 2 are closed, the multiple sliding blocks approach the mold core 21 to form a cavity 3. The feed port 11 is connected to the cavity 3 through the feed channel 12.

[0036] Specifically, the die-casting mold is a die-casting mold for the body of an electronic pump. Considering its thin wall thickness and high sealing requirements, the cavity 3 of this mold is designed with a "tall and narrow" structure. This structure is closer to the actual geometric shape of the electronic pump body itself, which is characterized by high concentration, vertical flow channels, and compact internal space. This helps to ensure the dimensional accuracy and structural integrity of the casting in key functional areas.

[0037] In this embodiment, the feed port 11 is located at the top edge of the cavity 3, so that the molten metal first fills the upper area of ​​the cavity 3, while the air is squeezed downward and outward in an orderly manner. This "top-down" filling combined with the "reverse exhaust" flow path greatly reduces the risk of gas being trapped inside the cavity 3 and forming bubbles and pores, and is especially suitable for deep cavity areas in the high and narrow cavity 3 where it is difficult to exhaust air.

[0038] like Figures 1-5 As shown, based on the above embodiment, the core-pulling assembly 22 includes two secondary sliding blocks 221 and one main sliding block 222. The two secondary sliding blocks 221 and the main sliding block 222 can abut against each other as they approach the mold core 21.

[0039] In this embodiment, two auxiliary sliding blocks 221 and one main sliding block 222 are close to the mold core 21. The three are tightly abutted at a predetermined position, forming a complete and sealed cavity 3 structure together. This ensures the accuracy of the cavity 3 dimensions and the surface finish, and effectively avoids defects such as flash, material shortage or deformation that may occur during the die casting process. This multi-slider collaborative molding design not only improves the mold's adaptability to complex parts, but also ensures the molding quality and structural integrity of the electronic pump body during the high-pressure die casting process.

[0040] like Figures 1-5 As shown, based on the above embodiment, the bottom surface of the upper mold 1 is provided with two inclined guide posts 13, and the two auxiliary sliding blocks 221 are provided with insertion holes 2211. The two inclined guide posts 13 are inclined and are respectively partially accommodated in the insertion holes 2211 of the two auxiliary sliding blocks 221.

[0041] Specifically, the top of the inclined guide post 13 is fixed to the upper mold 1. When the upper mold 1 is closed and opened, the inclined guide post 13 moves up and down with the upper mold 1. Because the inclined guide post 13 is designed to be inclined and inserted into the insertion hole 2211 of the auxiliary sliding block 221, and the auxiliary sliding block 221 cannot move up and down, when the upper mold 1 and the lower mold 2 are closed, the inclined guide post 13 descends, and the horizontal component force generated drives the auxiliary sliding block 221 closer to the mold core 21. When the upper mold 1 and the lower mold 2 are opened, the inclined guide post 13 rises, and the horizontal component force generated drives the auxiliary sliding block 221 away from the mold core 21.

[0042] In this embodiment, since the lifting and lowering of the upper mold 1 can drive the movement of the secondary sliding block 221, there is no need to configure an additional independent driving element to push the secondary sliding block 221 to perform core pulling or resetting actions, thereby simplifying the overall structure of the mold, reducing manufacturing costs and maintenance difficulties. At the same time, this linkage design ensures that the movement of the secondary sliding block 221 is highly synchronized with the opening and closing action of the upper mold 1, effectively avoiding motion interference or positioning deviation caused by asynchronous driving timing or response delay.

[0043] like Figures 1-5 As shown, based on the above embodiment, the core-pulling assembly 22 further includes a core-pulling drive element 223, which is disposed on the lower mold 2, and the output shaft of the core-pulling drive element 223 is connected to the main sliding block 222.

[0044] In this embodiment, the core-pulling drive element 223 can be a hydraulic cylinder or a pneumatic cylinder, and its output shaft can generate linear reciprocating motion to push or pull the main sliding block 222 to move horizontally along the preset guide rail direction, thereby completing the extraction or resetting action of the lateral core. The cooperation between the core-pulling drive element 223 and the main sliding block 222 not only realizes reliable demolding of complex structures, but also improves the automation level, operational stability and maintenance convenience of the mold.

[0045] like Figures 1-5 As shown, based on the above embodiment, the core-pulling assembly 22 further includes a main slider seat 224, and the output shaft of the core-pulling drive element 223 is connected to the main sliding block 222 through the main slider seat 224.

[0046] Specifically, the main sliding block 222, as a core component in the mold forming process, directly participates in the formation of the cavity 3. During operation, it needs to withstand the severe thermal shock from the molten metal and the mechanical friction and extrusion during the movement. Therefore, the main sliding block 222 is usually made of special alloy material with excellent thermal fatigue resistance, high wear resistance, sufficient strength and good toughness. In contrast, the main sliding block 224, as a transmission component in the transmission system, has lower requirements for the heat resistance and wear resistance of the material. It is usually made of structural steel or alloy steel with low density, easy processing and moderate cost.

[0047] In this embodiment, the design method of selecting different materials for the main sliding block 222 and the main sliding block seat 224 according to the differences in function and working conditions not only ensures the reliability and life of key components, but also realizes the economy and rationality of the mold system.

[0048] like Figures 1-5 As shown, based on the above embodiment, the core-pulling assembly 22 further includes a secondary slider seat 225, the insertion hole 2211 is disposed on the secondary slider seat 225, and the secondary slider seat 225 is connected to the secondary sliding block 221.

[0049] Specifically, the secondary sliding block 221, as a core component in the mold forming process, directly participates in the formation of the cavity 3. During operation, it needs to withstand the severe thermal shock from the molten metal and the mechanical friction and extrusion during the movement. Therefore, the secondary sliding block 221 is usually made of special alloy materials with excellent thermal fatigue resistance, high wear resistance, sufficient strength and good toughness. In contrast, the secondary slider seat 225, as a transmission component in the transmission system, has lower requirements for the heat resistance and wear resistance of the material. It is usually made of structural steel or alloy steel with low density, easy processing and moderate cost.

[0050] like Figures 1-5 As shown, based on the above embodiment, the mold core 21 is provided with an exhaust channel 211, the lower mold 2 is provided with an exhaust groove 23, one end of the exhaust channel 211 is connected to the cavity 3, and the other end of the exhaust channel 211 is connected to the exhaust groove 23.

[0051] Specifically, in this die-casting mold structure, an optimized venting channel 211 is specially designed. One end of the venting channel 211 is directly connected to the cavity 3, and the other end is connected to the venting groove 23 located outside the mold, thus forming a complete and unobstructed venting path. During the die-casting process, when the molten metal is injected into the cavity 3 at high speed, the air in the cavity can be quickly guided and discharged to the venting groove 23 outside the mold through this channel, thereby effectively avoiding the compression and accumulation of gas in the cavity 3 and ensuring that the molten metal fills the entire cavity 3 smoothly and continuously.

[0052] In this embodiment, the coordinated design of the venting channel 211 and the venting groove 23 significantly improves the venting performance of the mold. This not only effectively alleviates the gas resistance caused by gas retention, but also greatly reduces casting defects caused by poor venting, such as bubbles, porosity, cold shuts, and incomplete filling. Especially in areas with complex molding structures, tortuous flow channels, or thin walls, the efficient venting system can ensure that the molten metal fully and evenly fills every corner and detail of the cavity 3, significantly improving the internal density and external surface quality of the casting.

[0053] like Figures 1-5 As shown, based on the above embodiment, the mold core 21 is also provided with a slag-filling groove 212, and the exhaust channel 211 is connected to the cavity 3 through the slag-filling groove 212.

[0054] Specifically, during the die casting process, when the high-temperature molten alloy is injected into the mold cavity 3 at high speed, it is easy to get air in or carry impurities such as oxides and non-metallic inclusions. If these gases and impurities remain in the key areas of the cavity 3, they are very likely to form defects such as porosity and slag inclusions inside the casting. This not only affects the surface finish and appearance quality of the casting, but also weakens its mechanical properties, such as tensile strength, fatigue strength and airtightness.

[0055] In this embodiment, when the molten metal fills the cavity 3, the molten metal with a lower front temperature and more inclusions, as well as the entrained gas, tend to flow into this flow end area and are effectively captured and isolated in the slag trough 212. This prevents impurities and gas from further intruding into the main cavity 3 or the key functional areas of the casting, thereby ensuring the purity and structural integrity of the main casting.

[0056] like Figures 1-5 As shown, based on the above embodiment, a water cooling channel 4 is also included, which is disposed in the lower mold 2 and the core pulling assembly 22.

[0057] In this embodiment, by rationally arranging water-cooling channels 4 at the lower mold 2 and the core-pulling assembly 22 and introducing circulating cooling water, the large amount of heat released by the molten die-casting alloy during filling and solidification can be efficiently and quickly removed, thereby significantly shortening the cooling time in each die-casting cycle and effectively improving the overall production efficiency.

[0058] like Figures 1-5 As shown, based on the above embodiment, the bottom surface of the upper mold 1 is also provided with a shaping post 14. When the upper mold 1 and the lower mold 2 are closed, one end of the shaping post 14 contacts the mold core 21, and the shaping post 14 is provided with the water cooling channel 4.

[0059] In this embodiment, the shaping column 14 on the bottom surface of the upper mold 1 passes through the cavity 3 and contacts the mold core 21 when the mold is closed. During die casting, molten metal is injected into the cavity 3. The outer peripheral surface of the shaping column 14 becomes a key part for the formation of the internal channels of the casting. The shaping column 14 is provided with a water cooling channel 4, which can significantly accelerate the local solidification speed of the casting and effectively reduce the generation of internal defects such as shrinkage cavities.

Claims

1. A die-casting mold for an electronic pump body, 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 multiple sliding blocks, which can move towards or away from the mold core. When the upper mold and the lower mold are closed, the multiple sliding blocks approach the mold core to form a cavity. The feed port is connected to the cavity through the feed channel.

2. The die-casting mold for an electronic pump body as described in claim 1, characterized in that: The core-pulling assembly includes two secondary sliding blocks and one primary sliding block, which can abut against each other as they approach the mold core.

3. The die-casting mold for an electronic pump body as described in claim 2, characterized in that: The bottom surface of the upper mold is provided with two inclined guide pillars, and the two auxiliary sliding blocks are provided with insertion holes. The two inclined guide pillars are inclined and are respectively partially accommodated in the insertion holes of the two auxiliary sliding blocks.

4. The die-casting mold for an electronic pump body as described in claim 3, characterized in that: The core-pulling assembly further includes a core-pulling drive element, which is disposed on the lower mold, and the output shaft of the core-pulling drive element is connected to the main sliding block.

5. The die-casting mold for an electronic pump body as described in claim 4, characterized in that: The core-pulling assembly also includes a main slider seat, and the output shaft of the core-pulling drive element is connected to the main sliding block through the main slider seat.

6. The die-casting mold for an electronic pump body as described in claim 3, characterized in that: The core-pulling assembly also includes a secondary slider seat, the insertion hole is disposed on the secondary slider seat, and the secondary slider seat is connected to the secondary sliding block.

7. The die-casting mold for an electronic pump body as described in claim 1, characterized in that: The mold core is provided with an exhaust channel, and the lower mold is provided with an exhaust groove. One end of the exhaust channel is connected to the cavity, and the other end of the exhaust channel is connected to the exhaust groove.

8. The die-casting mold for an electronic pump body as described in claim 7, characterized in that: The mold core is also provided with a slag-filling groove, and the venting channel is connected to the cavity through the slag-filling groove.

9. The die-casting mold for an electronic pump body as described in claim 1, characterized in that: It also includes a water-cooling channel, which is disposed in the lower mold and the core-pulling assembly.

10. The die-casting mold for an electronic pump body as described in claim 9, characterized in that: The bottom surface of the upper mold is also provided with a shaping post. When the upper mold and the lower mold are closed, one end of the shaping post contacts the mold core. The shaping post is provided with the water cooling channel.

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