Cooling structure of rotor mold and rotor mold

Abstract

The utility model discloses a rotor mold cooling structure and a rotor mold, the rotor mold cooling structure comprises a fixed mold core, an end ring cavity and a plurality of sprues communicated with the end ring cavity are formed on the fixed mold core, and the sprues cast molten metal into the end ring cavity; at least two annular cooling water channels are arranged in the fixed mold core, and the cooling water channels comprise a first cooling water channel and a second cooling water channel which are distributed in an up-down laminated manner; wherein the first cooling water channel surrounds the outer side of the end ring cavity, and the second cooling water channel surrounds the outer sides of the multiple sprues, so that the end ring cavity and the sprues are cooled and radiated after molten metal filling is completed. According to the utility model, the cooling and heat dissipation efficiency can be effectively improved, the mold temperature can be conveniently controlled, the rotor manufacturing quality is improved, and the service life of the mold is prolonged; and the method has higher design flexibility and adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor molds, and particularly relates to a cooling structure of a rotor mold and a rotor mold. Background Art

[0002] A cast aluminum rotor is formed by injecting high-temperature aluminum liquid into the cavity of a cast aluminum mold in a specific die-casting equipment, and then the high-temperature aluminum liquid is quickly cooled and demolded. It is usually used in motors and generators. The cast aluminum rotor is widely used due to its excellent thermal conductivity, good mechanical strength and cost-effectiveness.

[0003] During the die-casting process, the control of the mold temperature is crucial for ensuring the quality of the casting and the service life of the mold. The mold will gradually heat up during the production process. If the temperature is too high, it will affect the quality of the casting and the service life of the mold. There is a way to cool the key parts of the mold, such as the gate, core, etc., by using an annular water jacket. However, when the annular water jacket needs to be precisely matched with specific equipment or complex molds, the design and manufacturing process of the annular water jacket will become very cumbersome, resulting in increased costs. Moreover, the annular water jacket may require more mold space for layout, which will inevitably lead to an increase in the overall volume of the mold.

[0004] Therefore, it is necessary to provide a new method to solve the above technical problems. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a cooling structure of a rotor mold, which can effectively improve the cooling and heat dissipation efficiency, conveniently control the mold temperature, improve the manufacturing quality of the rotor, and extend the service life of the mold; and it has higher design flexibility and adaptability.

[0006] The technical solution of the utility model is outlined as follows:

[0007] A cooling structure of a rotor mold includes: a fixed mold core, on which an end ring cavity and a plurality of gates communicating with the end ring cavity are formed, and the gates pour metal liquid into the end ring cavity;

[0008] At least two annular cooling water channels are arranged in the fixed mold core. The cooling water channels include a first cooling water channel and a second cooling water channel which are distributed in an upper and lower stacked manner. Among them, the first cooling water channel surrounds the outside of the end ring cavity, and the second cooling water channel surrounds the outside of a plurality of the gates, so as to cool and dissipate heat from the end ring cavity and the gates respectively after the metal liquid filling is completed.

[0009] Preferably, both the first cooling water channel and the second cooling water channel include a plurality of inclined water channels, and the plurality of inclined water channels all extend from the outer circumference of the fixed mold core to the inner circumference and are sequentially connected to form an annular structure.

[0010] Preferably, the extension path of each of the diagonal water channels is linear; and each of the diagonal water channels extends towards an adjacent diagonal water channel to communicate with the middle position of the adjacent diagonal water channel.

[0011] Preferably, the diagonal water channel includes a cooling section and a plugging section; wherein,

[0012] The cooling sections of two adjacent diagonal water channels communicate with each other to form a cooling water flow channel;

[0013] The plugging section is provided with a plugging structure to seal the cooling section, and the diameter of the plugging section is larger than the diameter of the cooling section.

[0014] Preferably, the included angle between the extension paths of two adjacent diagonal water channels is 20° - 60°.

[0015] Preferably, the axes of a plurality of the diagonal water channels are the outer tangents of the same circle.

[0016] Preferably, the length of the diagonal water channel is 30 mm - 90 mm.

[0017] Preferably, the first cooling water channel communicates with the second cooling water channel, wherein the first cooling water channel is provided with a cooling water inlet, the second cooling water channel is provided with a cooling water outlet, and the cooling water inlet and the cooling water outlet are located on the outer peripheral side wall of the fixed mold core.

[0018] Preferably, the first cooling water channel and the second cooling water channel are communicated through a transition pipeline, and the transition pipeline extends along the axial direction of the fixed mold core.

[0019] The present utility model also relates to a rotor mold, including the cooling structure of the rotor mold as described above.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] The present utility model provides a cooling structure for a rotor mold. By arranging at least two annular cooling water channels in the fixed mold core to respectively cool and dissipate heat from the gate and the end ring cavity, the cooling and heat dissipation efficiency is effectively improved, so as to conveniently control the mold temperature, improve the rotor manufacturing quality, and extend the service life of the mold; and the method of opening the annular water channel in the fixed mold core has higher design flexibility and adaptability, and can more easily adapt to molds of different shapes and sizes; the integrally designed annular water channel can make the cooling water directly contact with the fixed mold core, which helps to conduct heat transfer faster, has higher cooling efficiency, and has a lower leakage risk.

[0022] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model and be able to implement it according to the content of the description, the following takes the preferred embodiment of the present utility model and combines with the accompanying drawings to describe in detail as follows. The specific implementation manner of the present utility model is given in detail by the following embodiments and their accompanying drawings. Description of the Drawings

[0023] The drawings described herein are used to provide a further understanding of the present utility model, and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model, and do not constitute an improper limitation to the present utility model. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the fixed mold core in Embodiment 1 of the present utility model;

[0025] Figure 2 It is a design schematic diagram of the cooling water channel in Embodiment 1 of the present utility model;

[0026] Figure 3 It is a side view of the fixed mold core in Embodiment 1 of the present utility model;

[0027] Figure 4 is Figure 3 A-A sectional view of

[0028] Figure 5 is Figure 3 B-B sectional view of

[0029] In the figure: 1, fixed mold core;

[0030] 10, end ring cavity; 20, gate; 30, cooling water channel; 301, first cooling water channel; 302, second cooling water channel; 31, inclined water channel; 311, cooling section; 312, blocking section; 32, cooling water inlet; 33, cooling water outlet; 34, transition pipeline. Detailed Description of the Preferred Embodiment

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] In the drawings, for clarity, the shapes and dimensions may be enlarged, and the same reference numerals will be used throughout the drawings to indicate the same or similar components.

[0033] In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined with respect to the configurations shown in the respective drawings. In particular, "height" corresponds to the dimension from the top to the bottom, "width" corresponds to the dimension from the left to the right, and "depth" corresponds to the dimension from the front to the back. They are relative concepts and may therefore change accordingly depending on their different positions and usage states. Therefore, these or other orientations should not be construed as restrictive terms.

[0034] Terms related to attachment, connection, etc. (e.g., "connect" and "attach") refer to the relationship in which these structures are directly or indirectly fixed or attached to each other through an intermediate structure, as well as a movable or rigid attachment or relationship, unless otherwise explicitly stated.

[0035] Embodiment 1

[0036] An embodiment of the present utility model provides a cooling structure for a rotor mold, in combination with Figures 1 - 5 As shown, it includes: a fixed mold core 1, on which an end ring cavity 10 and a plurality of gate openings 20 communicating with the end ring cavity 10 are formed, and the gate openings 20 are used to pour molten metal into the end ring cavity 10;

[0037] At least two annular cooling water channels 30 are arranged in the fixed mold core 1, and the cooling water channels 30 include a first cooling water channel 301 and a second cooling water channel 302 that are distributed in an upper and lower stacked manner; wherein, the first cooling water channel 301 surrounds the outside of the end ring cavity 10, and the second cooling water channel 302 surrounds the outside of a plurality of the gate openings 20 to respectively cool and dissipate heat from the gate openings 20 and the end ring cavity 10 after the molten metal filling is completed.

[0038] In this embodiment, by arranging at least two annular cooling water channels 30 in the fixed mold core 1 to respectively cool and dissipate heat from the gate openings 20 and the end ring cavity 10, the cooling and heat dissipation efficiency is effectively improved, so as to conveniently control the temperature of the mold, improve the manufacturing quality of the rotor, and extend the service life of the mold.

[0039] Moreover, the method of opening an annular water channel in the fixed mold core 1 has higher design flexibility and adaptability, and can more easily adapt to molds of different shapes and sizes, that is, the cooling water channels 30 directly machined in the fixed mold core 1 can be precisely designed according to the specific shapes and cooling requirements of the gate openings 20 and the end ring cavity 10 on the fixed mold core 1, so as to achieve the best cooling effect.

[0040] In addition, the integrally designed annular water channel enables the cooling water to be in direct contact with the fixed mold core 1, which helps to achieve faster heat transfer, has higher cooling efficiency, and lower leakage risk. Moreover, the thermal expansion coefficients of the annular water channel and the fixed mold core 1 material are the same, which helps to maintain the consistency of the cooling effect during temperature changes.

[0041] In some embodiments, as shown in Figures 2 - 5 both the first cooling water channel 301 and the second cooling water channel 302 include a plurality of inclined water channels 31. The plurality of inclined water channels 31 all extend from the outer circumference to the inner circumference of the fixed mold core 1 and are sequentially connected to form an annular structure. In this embodiment, the inclined water channels 31 can be processed by drilling or other relatively simple processes to replace the existing method of first milling a water tank on a cooling plate and then forming a cooling channel by welding combination. The method in this embodiment can make the overall structure have better stability, be not prone to leakage, and there is no generation of welding stress during use, reducing the processing difficulty and manufacturing cost.

[0042] Furthermore, the extending path of each inclined water channel 31 is linear; and each inclined water channel 31 extends towards an adjacent inclined water channel 31 to communicate with the middle position of the adjacent inclined water channel 31. On the one hand, this processing method is simple and convenient. On the other hand, when the cooling water flows in the first cooling water channel 301 and the second cooling water channel 302, the cooling water can rotate in each inclined water channel 31 instead of just maintaining a simple linear flow. The method in this embodiment can further improve the full uniformity of cooling.

[0043] Furthermore, the inclined water channel 31 includes a cooling section 311 and a plugging section 312; wherein,

[0044] the cooling sections 311 of two adjacent inclined water channels 31 are connected to form a cooling water flow channel;

[0045] the plugging section 312 is provided with a plugging structure to seal the cooling section 311, and the diameter of the plugging section 312 is greater than the diameter of the cooling section 311. Among them, the plugging structure can be set as a plug to close the plugging section 312.

[0046] In some embodiments, the included angle α between the extending paths of two adjacent inclined water channels 31 is 20° - 60°; that is, as shown in Figure 5 the included angle α1 between two adjacent inclined water channels 31 of the first cooling water channel 301 is 20° - 60°, and the included angle α2 between two adjacent inclined water channels 31 of the second cooling water channel 302 is 20° - 60°. In this embodiment, preferably, in this embodiment, both α1 and α2 are 22.5°.

[0047] In some embodiments, the axes of a plurality of the inclined water channels 31 are the outer tangents of the same circle; for example, Figure 5 as shown, the axes of a plurality of the inclined water channels 31 of the first cooling water channel 301 are the outer tangents of a circle with a radius of R1; the axes of a plurality of the inclined water channels 31 of the second cooling water channel 302 are the outer tangents of a circle with a radius of R2.

[0048] In some embodiments, the length of the inclined water channel 31 is 30 mm - 90 mm. Preferably, in this embodiment, the length of the inclined water channel 31 is 60 mm.

[0049] Furthermore, in this embodiment, the length of the blocking section 312 of the inclined water channel 31 is 10 - 15 mm, and the length of the cooling section 311 is 45 mm - 50 mm; preferably, in this embodiment, the length of the blocking section 312 is 13 mm, and the length of the cooling section 311 is 47 mm.

[0050] In some embodiments, at least 15 inclined water channels 31 are provided. In this embodiment, 15 inclined water channels 31 are provided.

[0051] In some embodiments, in combination with Figures 1 - 5 as shown, the first cooling water channel 301 is communicated with the second cooling water channel 302. Among them, the first cooling water channel 301 is provided with a cooling water inlet 32, the second cooling water channel 302 is provided with a cooling water outlet 33, and the cooling water inlet 32 and the cooling water outlet 33 are located on the outer peripheral side wall of the fixed mold core 1; specifically, the cooling water first cools the end ring cavity 10 and then cools a plurality of gate openings 20, improving the cooling effect.

[0052] Furthermore, as Figure 2 shown, the first cooling water channel 301 is communicated with the second cooling water channel 302 through a transition pipeline 34, and the transition pipeline 34 extends along the axial direction of the fixed mold core 1.

[0053] It should be noted that in still some other embodiments, it can also be set that the first cooling water channel 301 and the second cooling water channel 302 are respectively and independently connected to the water supply system.

[0054] Embodiment 2

[0055] The embodiment of the present utility model further provides a rotor mold, including the cooling structure of the rotor mold as described in Embodiment 1.

[0056] In this embodiment, by providing at least two annular cooling water channels 30 in the fixed mold core 1 to respectively cool and dissipate heat from the gate openings 20 and the end ring cavity 10, the cooling and heat dissipation efficiency is effectively improved, so as to conveniently control the mold temperature, improve the manufacturing quality of the rotor, and extend the service life of the mold.

[0057] Moreover, the method of opening the annular water channel in the fixed mold core 1 has higher design flexibility and adaptability, and can more easily adapt to molds of different shapes and sizes. That is, the cooling water channel 30 directly machined in the fixed mold core 1 can be precisely designed according to the specific shape and cooling requirements of the gate 20 and the end ring cavity 10 on the fixed mold core 1, so as to achieve the best cooling effect.

[0058] In addition, the integrally designed annular water channel enables the cooling water to directly contact the fixed mold core 1, which helps to transfer heat faster, has higher cooling efficiency, and has a lower leakage risk; and the annular water channel has the same coefficient of thermal expansion as the material of the fixed mold core 1, which helps to maintain the consistency of the cooling effect when the temperature changes.

[0059] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples here.

Claims

1. A cooling structure for a rotor mold, comprising: The fixed mold core is formed with an end-ring cavity and a plurality of gates communicating with the end-ring cavity, and the gates are used to cast molten metal into the end-ring cavity; characterized in that: At least two annular cooling water channels are arranged in the fixed mold core, and the cooling water channels include a first cooling water channel and a second cooling water channel which are distributed in an upper and lower stacked manner; wherein, the first cooling water channel surrounds the outside of the end-ring cavity, and the second cooling water channel surrounds the outside of a plurality of the gates, so as to cool and dissipate heat from the end-ring cavity and the gates respectively after the filling of the molten metal is completed.

2. The cooling structure of the rotor mold according to claim 1, characterized in that: Both the first cooling water channel and the second cooling water channel include a plurality of oblique water channels, and the plurality of oblique water channels all extend from the outer circumference of the fixed mold core to the inner circumference and are sequentially communicated to form an annular structure.

3. The cooling structure of the rotor mold according to claim 2, characterized in that: The extending path of each oblique water channel is linear; and each oblique water channel extends towards an adjacent oblique water channel to communicate with the middle position of the adjacent oblique water channel.

4. The cooling structure of the rotor mold according to claim 3, characterized in that: The oblique water channel includes a cooling section and a blocking section; wherein, The cooling sections of two adjacent oblique water channels are communicated to form a cooling water flow channel; The blocking section is provided with a blocking structure to seal the cooling section, and the diameter of the blocking section is larger than that of the cooling section.

5. The cooling structure of the rotor mold according to claim 3, characterized in that: The included angle between the extending paths of two adjacent oblique water channels is 20°-60°.

6. The cooling structure of the rotor mold according to claim 3, wherein: The axes of the plurality of oblique water channels are the outer tangents of the same circle.

7. The cooling structure of the rotor mold according to claim 3, wherein: The length of the oblique water channel is 30mm-90mm.

8. The cooling structure of the rotor mold according to claim 1, characterized in that: The first cooling water channel is communicated with the second cooling water channel. Among them, the first cooling water channel is provided with a cooling water inlet, and the second cooling water channel is provided with a cooling water outlet. The cooling water inlet and the cooling water outlet are located on the outer peripheral side wall of the fixed mold core.

9. The cooling structure of the rotor mold according to claim 1, characterized in that: The first cooling water channel is communicated with the second cooling water channel through a transition pipeline, and the transition pipeline extends along the axial direction of the fixed mold core.

10. A rotor mold, characterized in that, It includes the cooling structure of the rotor mold as described in claim 1.

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