Die-casting die for inverting a stent

Abstract

This utility model provides a die-casting mold for an inverter rotating bracket, belonging to the field of die-casting mold technology. It includes an upper mold and a lower mold. The upper mold is provided with a feed inlet and a feed channel. The lower mold is provided with a mold core and a first sliding block. The first sliding block is provided with a feed transition part. After the upper mold and the lower mold are closed, a cavity is formed. When the first sliding block slides to contact the mold core, the feed transition part connects with the feed channel and communicates with the cavity. The molten metal liquid can effectively reduce the degree of turbulence by passing through the feed transition part, avoiding defects such as air entrapment, cold shut or erosion caused by direct impact on the cavity wall. After buffering and rectification, the molten metal liquid can fill each area of ​​the cavity more smoothly, continuously and evenly, which is especially helpful to improve the filling effect of thin-walled parts and complex structures.

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 inverter rotating bracket. Background Technology

[0002] Inverter brackets are key structural components in equipment such as motors and inverters, and their demand is increasing day by day. These parts are usually characterized by complex structure, uneven wall thickness, multiple holes and side concavities, and are widely produced in large quantities and efficiently using die casting technology.

[0003] Currently, for die-casting molds for complex housing parts such as inverter support brackets, if the transition area between the feed channel and the cavity is not properly designed during the molten metal filling process, defects such as cold shut and insufficient filling are likely to occur. In particular, when the height of the main runner and the mold core do not match, the smoothness of the molten metal flow is affected.

[0004] In summary, although some existing technical solutions have solved the problem of partial venting during the die casting process of inverter support, there is still considerable room for improvement in issues such as the complete filling of molten metal. 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 inverter rotor bracket, comprising:

[0006] The upper mold is equipped with a feed inlet and a feed channel;

[0007] The lower mold is provided with a mold core and a first sliding block. The mold core is connected to the lower mold, and the first sliding block is slidably connected to the lower mold. The first sliding block is provided with a feeding transition part.

[0008] After the upper mold and the lower mold are closed, a cavity is formed. When the first sliding block slides to contact the mold core, the feeding transition part connects with the feeding channel and communicates with the cavity.

[0009] In the die-casting mold of the inverter bracket described above, the feed transition section is higher than the top surface of the mold core.

[0010] In the die-casting mold of the inverter support described above, a second sliding block is also included. The second sliding block is slidably connected to the lower mold. There are two second sliding blocks, which approach or move away from the mold core from two different directions.

[0011] The die-casting mold for the inverter bracket described above also includes a forming column, one end of which is connected to the upper mold, and the other end of which extends into the cavity when the mold is closed.

[0012] In the die-casting mold of the inverter bracket described above, there are two forming pillars. The first forming pillar is located away from the feed channel, and the second forming pillar is located close to the feed channel. In the mold-closed state, the inner end of the second sliding block and the side of the first forming pillar together enclose a cavity area for forming the water nozzle mounting interface of the inverter bracket.

[0013] The die-casting mold for the inverter bracket described above also includes a core-pulling drive element and a slider seat. The first slider and the second slider are both connected to the corresponding core-pulling drive element through the corresponding slider seat.

[0014] In the die-casting mold of the inverter bracket described above, the mold core is provided with an exhaust channel, and 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.

[0015] In the die-casting mold of the inverter support described above, 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.

[0016] The die-casting mold for the inverter bracket described above also includes a water-cooling channel, which is disposed in the upper mold and the lower mold.

[0017] In the die-casting mold of the inverter support described above, a cooling channel is provided inside the forming column, and the cooling channel is connected to the water cooling channel.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The molten metal passing through the feed transition section can effectively reduce the degree of turbulence, avoiding defects such as air entrapment, cold shuts or erosion caused by direct impact on the cavity wall. After buffering and rectification, the molten metal can fill each area of ​​the cavity more smoothly, continuously and evenly, which is especially helpful in improving the filling effect of thin-walled parts and complex structures.

[0020] 2. When the high-temperature molten metal enters the feed transition section through the feed channel, it first flows into the cavity area at a higher position. Since the feed transition section is at a higher position, the molten metal can naturally flow from high to low under pressure, filling the adjacent lower planar cavities in sequence. The higher feed transition section plays the role of high-level feeding, effectively overcoming the influence of gravity on the flow direction of the molten metal.

[0021] 3. One end of one of the second sliding blocks is tightly fitted with the side of the first forming column. The two together enclose the forming cavity of the water nozzle mounting interface on the inverter bracket. Although the pressure and flow rate of the molten metal flowing through this area are low, the mating surfaces between the second sliding block and the first forming column are precisely machined and tightly fitted, forming a closed and stable local cavity space. This effectively prevents leakage or deviation of the molten metal, not only compensating for the influence of insufficient fluid power, but also achieving high precision in complex interface structures. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a top view of the interior of the mold of this utility model.

[0024] Figure 3 This is a schematic diagram of the internal structure of the mold of this utility model.

[0025] Figure 4 for Figure 3 A magnified view of detail A.

[0026] In the picture:

[0027] 1. Upper mold; 11. Inlet; 12. Inlet channel; 2. Lower mold; 21. Mold core; 211. Venting channel; 212. Slag pocket groove; 22. First sliding block; 221. Inlet transition section; 23. Second sliding block; 24. First forming pillar; 25. Second forming pillar; 26. Venting groove; 3. Cavity; 4. Slider seat; 5. Core pulling drive element. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] like Figures 1-4 As shown, a die-casting mold for an inverter rotor bracket includes: an upper mold 1 and a lower mold 2.

[0035] The upper mold 1 is provided with a feed inlet 11 and a feed channel 12.

[0036] The lower mold 2 is provided with a mold core 21 and a first sliding block 22. The mold core 21 is connected to the lower mold 2, and the first sliding block 22 is slidably connected to the lower mold 2. The first sliding block 22 is provided with a feeding transition part 221.

[0037] After the upper mold 1 and the lower mold 2 are closed, a cavity 3 is formed. When the first sliding block 22 slides to abut against the mold core 21, the feeding transition part 221 connects with the feeding channel 12 and communicates with the cavity 3.

[0038] Specifically, during the die casting process, the high-temperature molten metal is first injected into the feed channel 12 of the mold from the nozzle of the die casting machine. Then, the molten metal enters the feed transition section 221 on the first sliding block 22. The feed transition section 221 plays a key role in guiding and buffering in the mold structure. Its inner wall is designed with reasonable curvature changes to slow down the flow rate of the molten metal and adjust its flow direction.

[0039] In this embodiment, the molten metal liquid can effectively reduce the degree of turbulence by passing through the feed transition section 221, avoiding defects such as air entrapment, cold shuts or erosion caused by direct impact on the wall of the cavity 3. After buffering and rectification, the molten metal liquid can fill each area of ​​the cavity 3 more smoothly, continuously and uniformly, which is especially helpful to improve the filling effect of thin-walled parts and complex structures.

[0040] like Figures 1-4 As shown, based on the above embodiment, the feed transition section 221 is higher than the top surface height of the mold core 21.

[0041] Specifically, in the die-casting inverter support forming process, the casting structure is mainly composed of two planar regions of different heights. In order to ensure that the molten metal can completely and orderly fill the cavity 3 regions of different heights, the top height of the feed transition section 221 is higher than the top surface of the mold core 21, that is, higher than the cavity 3 inlet corresponding to the higher planar region.

[0042] In this embodiment, when the high-temperature molten metal enters the feed transition section 221 through the feed channel 12, it first flows into the cavity 3 region at a higher position. Since the feed transition section 221 is at a higher position, the molten metal can naturally flow from high to low under pressure, sequentially filling the adjacent lower planar cavities 3. The higher feed transition section 221 plays the role of high-level feeding, effectively overcoming the influence of gravity on the flow direction of the molten metal.

[0043] like Figures 1-4 As shown, based on the above embodiment, a second sliding block 23 is also included. The second sliding block 23 is slidably connected to the lower mold 2. There are two second sliding blocks 23, which approach or move away from the mold core 21 from two different directions.

[0044] In this embodiment, the two second sliding blocks 23 move towards or away from the mold core 21 from two different directions simultaneously, forming a complete cavity 3 contour together with the mold core 21. This ensures that the molten metal can accurately fill every detailed area under high pressure, thereby forming the complex structure of the outer surface of the inverter support and improving the dimensional accuracy and surface quality of the casting.

[0045] like Figures 1-4 As shown, based on the above embodiment, it also includes a forming column, one end of which is connected to the upper mold 1, and the other end of which extends into the cavity 3 when the mold is closed.

[0046] In this embodiment, the forming column extends into the cavity 3 through the upper mold 1 and then cooperates with the mold core 21 to form the key functional structure on the surface of the inverter support, reducing subsequent machining processes and improving production efficiency and product consistency.

[0047] like Figures 1-4 As shown, based on the above embodiment, the number of forming columns is two. The first forming column 24 is set away from the feed channel 12, and the second forming column 25 is set close to the feed channel 12. In the mold closing state, the inner end of one of the second sliding blocks 23 and the side of the first forming column 24 together form a cavity 3 area for forming the water nozzle mounting interface on the inverter bracket.

[0048] Specifically, since the first forming column 24 is located relatively far from the main flow path of the feed channel 12 in the mold cavity 3, the molten metal needs to go through a long flow path and overcome the flow channel resistance before it can reach this area during the filling process. Therefore, when the molten metal flows around the first forming column 24, its flow pressure and flow rate have been significantly reduced. This area belongs to the end or secondary flow zone of the cavity 3 filling. The kinetic energy of the molten metal is weakened, and casting defects such as insufficient filling, cold shut or unclear outline are prone to occur. This poses a challenge, especially for the forming of features with fine structure and large depth.

[0049] In this embodiment, one end of one of the second sliding blocks 23 is tightly fitted with the side of the first forming column 24. Together, they enclose and form the forming cavity 3 of the water nozzle mounting interface on the inverter bracket. Although the pressure and flow rate of the molten metal flowing through this area are low, the mating surfaces between the second sliding block 23 and the first forming column 24 are precisely machined and tightly fitted, forming a closed and stable local cavity 3 space. This effectively prevents leakage or deviation of the molten metal, not only compensating for the influence of insufficient fluid power, but also achieving high precision in complex interface structures.

[0050] like Figures 1-4 As shown, based on the above embodiment, it also includes a core-pulling drive element 5 and a slider seat 4. The first slider 22 and the second slider 23 are both connected to the corresponding core-pulling drive element 5 through the corresponding slider seat 4.

[0051] Specifically, the first sliding block 22 and the second sliding block 23 are key forming components that directly participate in the formation of the casting cavity 3. Therefore, the first sliding block 22 and the second sliding block 23 must be made of high-performance hot work die steel to ensure that they have excellent high temperature resistance, wear resistance, thermal crack resistance and dimensional stability. In contrast, the slider seat 4 is a transmission and support component in the mold, and the requirements for material properties are relatively low.

[0052] In this embodiment, by structurally separating the high-requirement molding function from the lower-requirement transmission function, the sliding block undertakes the precision molding task under high temperature and high pressure, while the slider seat 4 is responsible for power transmission and support positioning. This not only ensures the service life of the mold, but also facilitates subsequent maintenance and replacement.

[0053] like Figures 1-4 As shown, based on the above embodiment, the mold core 21 is provided with an exhaust channel 211, and the lower mold 2 is provided with an exhaust groove 26 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 26.

[0054] In this embodiment, during the process of the molten metal filling the cavity 3 at high speed, the gas originally in the cavity 3 is continuously compressed as the molten metal is pushed forward, and moves sequentially towards the end of the cavity 3 along the front direction of the metal flow. The pushed gas eventually enters the exhaust channel 211 provided on the mold core 21, and then flows into the corresponding exhaust groove 26 in the lower mold 2. After being collected by the exhaust groove 26, it is smoothly discharged outside the mold, which not only greatly improves the exhaust efficiency, but also significantly improves the internal density and surface quality of the casting.

[0055] like Figures 1-4 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.

[0056] 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. During the filling process of molten metal, the cold metal, inclusions and compressed gas at the forefront are first guided to the slag packing groove 212 area. The gas enters the exhaust system through the channel above or on the side of the slag packing groove 212, while the denser cold material and oxide slag are retained in the slag packing groove 212 due to the inertia of the flow and gravity.

[0057] like Figures 1-4 As shown, based on the above-described embodiment, a water-cooling channel (not shown in the figure) is also included, which is disposed in the upper mold 1 and the lower mold 2.

[0058] In this embodiment, the water cooling channels are arranged reasonably in the mold and circulating cooling water is introduced, which can effectively absorb and remove the large amount of heat transferred to the mold by the molten alloy during the filling and solidification stages of the die casting process. This significantly improves the heat dissipation efficiency of the mold, enabling the casting to achieve rapid and uniform cooling and solidification in the cavity 3. Furthermore, stable mold temperature control helps to reduce mold deformation and thermal fatigue cracks caused by thermal stress, and extends the service life of the mold.

[0059] like Figures 1-4 As shown, based on the above embodiment, the molding column is provided with a cooling channel (not shown in the figure), and the cooling channel is connected to the water cooling channel.

[0060] In this embodiment, the forming column is in contact with high-temperature molten metal for a long time during the die casting process, and the forming column and the mold core 21 are used to form key components of the inverter support. By integrating cooling channels inside, the temperature of the molten metal around the forming column can be effectively reduced, thereby improving the forming quality of key components.

Claims

1. A die-casting mold for an inverter rotor bracket, 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 first sliding block. The mold core is connected to the lower mold, and the first sliding block is slidably connected to the lower mold. The first sliding block is provided with a feeding transition part. After the upper mold and the lower mold are closed, a cavity is formed. When the first sliding block slides to contact the mold core, the feeding transition part connects with the feeding channel and communicates with the cavity.

2. The die-casting mold for an inverter rotor bracket as described in claim 1, characterized in that: The feed transition section is higher than the top surface of the mold core.

3. The die-casting mold for an inverter rotor bracket as described in claim 1, characterized in that: It also includes a second sliding block, which is slidably connected to the lower mold. There are two second sliding blocks, which approach or move away from the mold core from two different directions.

4. The die-casting mold for an inverter rotor bracket as described in claim 3, characterized in that: It also includes a forming column, one end of which is connected to the upper mold, and the other end of which extends into the cavity when the mold is closed.

5. The die-casting mold for an inverter rotor bracket as described in claim 4, characterized in that: The number of forming pillars is two, wherein the first forming pillar is located away from the feed channel and the second forming pillar is located close to the feed channel. In the mold closing state, the inner end of one of the second sliding blocks and the side of the first forming pillar together enclose a cavity area for forming the water nozzle mounting interface on the inverter bracket.

6. The die-casting mold for an inverter rotor bracket as described in claim 3, characterized in that: It also includes a core-pulling drive element and a slider seat, wherein the first slider and the second slider are both connected to the corresponding core-pulling drive element through the corresponding slider seat.

7. The die-casting mold for an inverter rotor bracket 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 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.

8. The die-casting mold for an inverter rotor bracket 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 inverter rotor bracket as described in claim 4, characterized in that: It also includes a water-cooling channel, which is disposed in the upper mold and the lower mold.

10. The die-casting mold for an inverter rotor bracket as described in claim 9, characterized in that: The forming column has a cooling channel inside, which is connected to the water cooling channel.

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