A rotor aluminum casting mold two-cavity parting structure

Abstract

This utility model relates to a two-cavity split-mold structure for a rotor aluminum casting mold, belonging to the technical field of rotor aluminum casting molds. It includes a lower mold, a split middle mold, and an upper mold, with a split-mold structure between the lower and upper molds. The split-mold structure includes aluminum casting cavities respectively disposed inside the lower and upper molds. Left and right bosses are fixedly connected to opposite sides of both the lower and upper molds, as are front and rear bosses. Positioning bosses are fixedly connected to opposite sides of both the lower and upper molds. The split middle mold has two iron core cavities inside. This two-cavity split-mold structure for a rotor aluminum casting mold adopts a rectangular, one-mold-out-two-cavity split-mold opening and closing structure. The middle mold is lightweight and uses less material. The mold-closing connection between the middle mold and the upper and lower molds uses a four-sided straight-edge beveled boss structure, making the die-casting cycle mold release and closing process fast, precise, and convenient to operate, effectively improving production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of rotor casting aluminum mold technology, specifically a two-cavity parting structure for rotor casting aluminum mold. Background Technology

[0002] Rotor casting molds are precision casting molds used in the manufacturing process of motor rotors. They are used to rapidly inject molten aluminum into the mold cavity under high pressure, and after cooling and solidification, form an integral part of the rotor bars and end rings. The structural design must accurately correspond to the slot shape, size, and end ring shape of the rotor core, and must have good heat resistance, thermal conductivity, high strength, and sufficient toughness to withstand repeated thermal shocks and mechanical stresses. At the same time, the design of its internal gating system, venting system, and cooling system directly affects the filling effect of the molten aluminum, the density of the casting, the electrical conductivity, and the final efficiency, noise, and operational stability of the motor. It is a key process equipment to ensure the quality, production efficiency, and performance consistency of the motor rotor.

[0003] In conventional aluminum casting mold designs for motors, the molds are typically designed with either a single-cavity, openable circular middle mold or a single-cavity, non-openable circular middle mold. However, some discrete rotors within a certain size range require a single-cavity design with a split middle mold to ensure optimal matching between the rotor's die-casting parameters and the corresponding die-casting machine, while also facilitating demolding and achieving a better balance between production efficiency and product quality. However, the conventional split-mold design results in a bulky middle mold, prone to misalignment during opening and closing, and difficult operation, severely impacting production efficiency and product quality. Therefore, a two-cavity split-mold structure for rotor aluminum casting molds is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a two-cavity split mold structure for rotor aluminum casting molds, which has the advantages of effectively improving the production efficiency and product quality of rotor aluminum casting molds. It solves the problems of existing conventional circular middle mold split-opening and closing designs, which result in bulky middle molds, easy misalignment during opening and closing, and difficult operation, seriously affecting production efficiency and product quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A two-cavity mold splitting structure for a rotor aluminum casting mold includes a lower mold, a split middle mold, and an upper mold, wherein a mold splitting structure is provided between the lower mold and the upper mold;

[0007] The mold splitting structure includes cast aluminum cavities respectively disposed inside the lower mold and the upper mold. Left and right bosses are fixedly connected to the opposite sides of the lower mold and the upper mold. Front and rear bosses are fixedly connected to the opposite sides of the lower mold and the upper mold. Positioning bosses are fixedly connected to the opposite sides of the lower mold and the upper mold. Two iron core cavities are opened inside the splitting middle mold.

[0008] Furthermore, the split-half mid-mold includes a left mid-mold and a right mid-mold, which are symmetrically distributed left and right.

[0009] Furthermore, the interior of the split mold contains two rotor cores, each with an aluminum end ring at both the top and bottom. A balance pin is located on the side of the aluminum end ring away from the rotor core. The two rotor cores are located inside the left and right halves of the mold, respectively.

[0010] Furthermore, the top of both the left and right half of the middle mold is provided with an upper inclined surface, and the bottom of both the left and right half of the middle mold is provided with a lower inclined surface.

[0011] Furthermore, the two upper inclined surfaces and the two lower inclined surfaces are slidably connected to the positioning boss, and the side of the positioning boss near the split mold is an inclined surface.

[0012] Furthermore, both the lower and upper molds are provided with mounting grooves, and the aluminum end rings and balance pins are located inside the mounting grooves.

[0013] Furthermore, the cast aluminum cavity is located between the left and right bosses and the front and rear bosses, respectively.

[0014] Furthermore, the split-mold is positioned between the lower mold and the upper mold.

[0015] Compared with the prior art, this utility model provides a two-cavity mold splitting structure for a rotor aluminum casting mold, which has the following beneficial effects:

[0016] This rotor aluminum casting mold has a two-cavity split mold structure, which adopts a rectangular one-mold-out-two-cavity split-mold opening and closing structure. The middle mold is lightweight and uses less material. The mold closing connection between the middle mold and the upper and lower molds adopts a four-sided straight-edge beveled boss structure, which makes the die casting cycle mold release and mold closing process fast, accurate and convenient to operate, and effectively improves production efficiency and product quality. Moreover, this structure makes the mold cavity die casting easier to demold, easier to operate, and the mold closing tighter and more accurate in position. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the rotor core structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the lower mold structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the split-half middle mold of this utility model;

[0021] Figure 5 This is a top view of the split-half mid-mold structure of this utility model.

[0022] In the picture:

[0023] 1. Lower mold; 2. Half-mold; 201. Left half-mold; 202. Right half-mold; 3. Upper mold; 4. Cast aluminum cavity; 5. Left and right bosses; 6. Front and rear bosses; 7. Positioning boss; 8. Iron core cavity; 9. Lower end bevel; 10. Upper end bevel; 11. Rotor iron core; 12. Aluminum end ring; 13. Balance pin. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 5 The rotor aluminum casting mold 2 cavity splitting structure in this embodiment includes a lower mold 1, a split middle mold 2 and an upper mold 3, with a splitting structure provided between the lower mold 1 and the upper mold 3.

[0026] In this embodiment, the split-mold 2 is disposed between the lower mold 1 and the upper mold 3.

[0027] In this embodiment, the mold splitting structure includes cast aluminum cavities 4 respectively disposed inside the lower mold 1 and the upper mold 3. Left and right bosses 5 are fixedly connected to the opposite sides of the lower mold 1 and the upper mold 3. Front and rear bosses 6 are fixedly connected to the opposite sides of the lower mold 1 and the upper mold 3. The cast aluminum cavities 4 are respectively located between the left and right bosses 5 and the front and rear bosses 6. Positioning bosses 7 are fixedly connected to the opposite sides of the lower mold 1 and the upper mold 3. Two iron core cavities 8 are opened inside the splitting middle mold 2.

[0028] In this embodiment, the split-mold 2 includes a left half-mold 201 and a right half-mold 202, which are symmetrically distributed. The split-mold 2 has two rotor cores 11 inside. The top and bottom of the rotor cores 11 are provided with aluminum end rings 12. The side of the aluminum end rings 12 away from the rotor cores 11 is provided with balance pins 13. The two rotor cores 11 are located inside the left half-mold 201 and the right half-mold 202, respectively. The lower mold 1 and the upper mold 3 are both provided with mounting grooves. The aluminum end rings 12 and the balance pins 13 are both located inside the mounting grooves.

[0029] In this embodiment, the top of the left half middle mold 201 and the right half middle mold 202 are provided with upper inclined surfaces 10, and the bottom of the left half middle mold 201 and the right half middle mold 202 are provided with lower inclined surfaces 9. The two upper inclined surfaces 10 and the two lower inclined surfaces 9 are slidably connected to the positioning boss 7 respectively. The side of the positioning boss 7 near the split middle mold 2 is an inclined surface.

[0030] The working principle of the above embodiments is as follows:

[0031] When the die-casting machine is working, the upper mold 3 moves downward and closes tightly with the lower mold 1 and the split middle mold 2, forming two complete aluminum casting cavities 4. The rotor core 11 is fixed in the core cavity 8 of the split middle mold 2. The lower mold 1 and the upper mold 3 are guided and positioned by the left and right bosses 5 and the front and rear bosses 6. At the same time, the positioning boss 7 and the lower inclined surface 9 and the upper inclined surface 10 of the split middle mold 2 generate lateral thrust through the inclined surface cooperation, ensuring that the mold is tightly closed. Then, the molten aluminum liquid is injected from the injection... The aluminum casting cavity 4 of the lower mold 1 is injected into the cylinder mouth, filling the cavity space at both ends of the rotor core 11. After cooling, aluminum end rings 12 and balance pins 13 are formed. After the aluminum casting is completed, the upper mold 3 is lifted upward, and the left half of the middle mold 201 and the right half of the middle mold 2 are separated to the sides, making it easy to remove the rotor core 11 assembly after aluminum casting. The entire structure achieves efficient mold closing, stable aluminum casting and rapid demolding through precise positioning and inclined plane thrust, ensuring the dimensional accuracy and production efficiency of the rotor aluminum casting.

[0032] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0033] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-cavity mold structure for casting aluminum rotors, comprising a lower mold (1), a split middle mold (2), and an upper mold (3), characterized in that: A mold-separating structure is provided between the lower mold (1) and the upper mold (3); The mold splitting structure includes cast aluminum cavities (4) respectively set inside the lower mold (1) and the upper mold (3). The lower mold (1) and the upper mold (3) are fixedly connected to left and right bosses (5) on opposite sides. The lower mold (1) and the upper mold (3) are fixedly connected to front and rear bosses (6) on opposite sides. The lower mold (1) and the upper mold (3) are fixedly connected to positioning bosses (7) on opposite sides. The split middle mold (2) has two iron core cavities (8) inside.

2. The rotor casting aluminum mold two-cavity parting structure according to claim 1, characterized in that: The split-half middle mold (2) includes a left half middle mold (201) and a right half middle mold (202), which are symmetrically distributed from left to right.

3. The rotor casting aluminum mold two-cavity parting structure according to claim 2, characterized in that: The split-mold (2) has two rotor cores (11) inside. The top and bottom of each rotor core (11) are provided with aluminum end rings (12). The side of the aluminum end ring (12) away from the rotor core (11) is provided with a balance pin (13). The two rotor cores (11) are located inside the left half of the mold (201) and the right half of the mold (202), respectively.

4. The rotor casting aluminum mold two-cavity parting structure according to claim 2, characterized in that: The top of the left half middle mold (201) and the right half middle mold (202) are both provided with an upper inclined surface (10), and the bottom of the left half middle mold (201) and the right half middle mold (202) are both provided with a lower inclined surface (9).

5. The rotor casting aluminum mold two-cavity parting structure according to claim 4, characterized in that: The two upper inclined surfaces (10) and the two lower inclined surfaces (9) are slidably connected to the positioning boss (7), and the side of the positioning boss (7) near the split mold (2) is an inclined surface.

6. The rotor casting aluminum mold two-cavity parting structure according to claim 3, characterized in that: The lower mold (1) and the upper mold (3) are both provided with mounting grooves, and the aluminum end ring (12) and the balance pin (13) are both located inside the mounting grooves.

7. The rotor casting aluminum mold two-cavity parting structure according to claim 1, characterized in that: The cast aluminum cavity (4) is located between the left and right bosses (5) and the front and rear bosses (6).

8. The rotor casting aluminum mold two-cavity parting structure according to claim 1, characterized in that: The split-mold (2) is positioned between the lower mold (1) and the upper mold (3).

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