Die casting device for fixed flange of motor

Abstract

The invention provides a die-casting device for a fixed flange of a motor, and the die-casting device comprises a main body frame, and the middle part of the main body frame is provided with a die-casting space; the die body is arranged in the die-casting space, the die body comprises an upper die body and a lower die body, a lower die cavity is formed in the lower die body, and an upper die cavity is formed in the side, facing the lower die body, of the upper die body; and the first driving piece is arranged on the main body frame, and the output end of the first driving piece is connected with the upper die body. The automatic demolding device has the beneficial effects that through the arrangement of the upper demolding assembly and the lower demolding assembly, after the upper mold body and the lower mold body are subjected to pressure casting, the upper demolding assembly and the lower demolding assembly can be started at the same time, then automatic demolding of the pressure casting body is achieved, manual demolding is not needed, the demolding efficiency is improved, manpower is reduced, and the quality of a demolded product is improved.

Description

Technical Field

[0001] The present application belongs to the field of automobile processing technology, and specifically relates to a fixed flange die-casting device for a motor. Background Art

[0002] The fixed flange is an indispensable part of the motor. It firmly mounts the motor on the equipment or mechanical structure to ensure that the motor maintains the correct position during operation without displacement or shaking. In the existing production of fixed flanges by die-casting devices, the die-cast body (i.e., the fixed flange) after die-casting is difficult to be smoothly separated from the upper or lower cavity of the mold, which not only consumes a lot of time and manpower for demolding operations, but also easily causes surface damage or deformation of the fixed flange due to improper demolding, greatly reducing the product yield. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In order to solve the above problems, the present application provides a fixed flange die-casting device for a motor, comprising:

[0005] A main frame, wherein a die-casting space is provided in the middle of the main frame;

[0006] A mold body, the mold body is arranged in the die-casting space, the mold body comprises an upper mold body and a lower mold body, the lower mold body is provided with a lower film cavity, and the upper mold body is provided with an upper film cavity on a side facing the lower mold body;

[0007] A first driving member, wherein the first driving member is disposed on the main frame, an output end of the first driving member is connected to the upper mold body, the first driving member is used to drive the upper mold body to move, and a limiting tube is sleeved on the outer side of the output end of the first driving member;

[0008] The upper demoulding assembly is arranged on the upper mold body. When the first driving member drives the upper mold body to move upward, after the upper demoulding assembly contacts the limiting tube, the upper demoulding assembly will drive the die-cast body in the upper membrane cavity to separate from the upper membrane cavity.

[0009] Optionally, the upper demoulding component includes:

[0010] An upper ejector rod, wherein a plurality of upper demoulding holes are provided in the upper mold cavity, and the upper ejector rod is at least partially disposed in the upper demoulding holes;

[0011] An upper stripping plate, which is slidably disposed on the output end of the first driving member and is located above the upper mold body, and the upper ejector rod is connected to the upper stripping plate;

[0012] An elastic member is arranged between the upper stripping plate and the upper mold body.

[0013] Optionally, the upper demoulding component further includes:

[0014] A guide rod passes through the upper stripping plate and is connected to the upper mold body.

[0015] Optionally, a lower demoulding component is also included, and the lower demoulding component includes:

[0016] A second driving member, wherein the second driving member is disposed on the main frame;

[0017] A lower stripping plate, the lower stripping plate being arranged on the output end of the second driving member;

[0018] A lower ejector rod, wherein a plurality of lower demoulding holes are opened in the lower film cavity, the lower ejector rod is arranged on the lower stripping plate, and the lower ejector rod is at least partially arranged in the lower demoulding hole.

[0019] Optionally, it also includes a feeding pipe, which is arranged on the upper mold body and is slidably connected to the upper stripping plate.

[0020] Optionally, a third driving member is provided on the main frame, a piston rod is provided on the output end of the third driving member, the piston rod is provided in the feeding pipe, and the third driving member can drive the piston rod to move in the feeding pipe.

[0021] Optionally, the third driving member is a hydraulic rod.

[0022] Optionally, a liquid outlet hole is provided on the upper mold body, and the liquid outlet hole is communicated with the upper membrane cavity.

[0023] Optionally, cooling oil circuits are provided inside the upper mold body and the lower mold body.

[0024] Optionally, a limiting protrusion is provided on the lower mold body and located outside the lower membrane cavity, and a limiting groove is provided on the upper mold body at a position matching the limiting protrusion and facing the side of the lower mold body.

[0025] Beneficial Effects

[0026] A fixed flange die-casting device for a motor provided in an embodiment of the present invention, through the arrangement of an upper demolding assembly and a lower demolding assembly, after the die-casting of the upper mold body and the lower mold body is completed, the upper demolding assembly and the lower demolding assembly can be started at the same time, thereby realizing automatic demolding of the die-casting body, eliminating the need for manual demolding, thereby improving demolding efficiency, reducing manpower, and improving the quality of the product after demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A schematic diagram of the three-dimensional structure of the fixed flange die-casting device of the motor of the present application;

[0028] Figure 2 This is a schematic diagram of the main structure of the fixed flange die-casting device of the motor of the present application;

[0029] Figure 3 The fixed flange die-casting device of the motor of the present application Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0030] Figure 4 This is a schematic diagram of the connection structure between the piston rod and the feed pipe of the fixed flange die-casting device of the motor of the present application.

[0031] The reference numerals are:

[0032] 1. Main frame; 2. Mold body; 21. Upper mold body; 22. Lower mold body; 3. First driving member; 4. Limiting tube; 5. Upper demoulding assembly; 51. Upper ejector rod; 52. Upper stripping plate; 53. Elastic member; 54. Guide rod; 6. Lower demoulding assembly; 61. Lower stripping plate; 62. Lower ejector rod; 63. Second driving member; 7. Feeding tube; 8. Third driving member; 9. Piston rod; 10. Liquid outlet; 11. Limiting protrusion. DETAILED DESCRIPTION

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] See also Figure 1-4 As shown, according to an embodiment of the present application, a fixed flange die-casting device for a motor is provided, comprising:

[0038] A main frame 1, wherein a die-casting space is provided in the middle of the main frame 1;

[0039] A mold body 2, wherein the mold body 2 is disposed in the die-casting space, and the mold body 2 comprises an upper mold body 21 and a lower mold body 22, wherein a lower mold cavity is formed on the lower mold body 22, and an upper mold cavity is formed on the side of the upper mold body 21 facing the lower mold body 22;

[0040] A first driving member 3, wherein the first driving member 3 is disposed on the main frame 1, wherein an output end of the first driving member 3 is connected to the upper mold body 21, and the first driving member 3 is used to drive the upper mold body 21 to move, and a limiting tube 4 is sleeved on the outer side of the output end of the first driving member 3;

[0041] The upper demoulding component 5 is arranged on the upper mold body 21. When the first driving member 3 drives the upper mold body 21 to move upward, after the upper demoulding component 5 contacts the limiting tube 4, the upper demoulding component 5 will drive the die-cast body in the upper membrane cavity to separate from the upper membrane cavity.

[0042] The fixed flange die-casting device of the motor provided in the embodiment of the present application includes a main frame 1, a mold body 2, a first driving member 3 and an upper demolding assembly 5. The main frame 1 is used as a supporting structure of the entire die-casting device and is made of high-strength metal materials, such as high-quality carbon steel, to ensure that it has sufficient strength and stability to withstand various stresses during the die-casting process. The main frame 1 includes a bottom plate, a fixing rod and a top plate. The bottom plate and the top plate are connected by four fixing rods, and a die-casting space is formed between the bottom plate and the top plate for die-casting a fixed flange.

[0043] The mold body 2 includes a lower mold body 22 and an upper mold body 21, which are respectively installed in the die casting space. The lower mold cavity opened on the lower mold body 22 and the upper mold cavity opened on the upper mold body 21, the shape and size of the lower mold cavity and the upper mold cavity are precisely processed according to the specific specifications of the motor fixing flange. During the manufacturing process, the upper and lower mold cavities are opened to ensure the accurate size of the motor fixing flange formed by die casting. The surfaces of the lower and upper mold cavities are subjected to special surface treatments, such as polishing and nitriding, to improve their surface quality and wear resistance, reduce the wear on the mold during the die casting process, and ensure the surface finish of the die casting body.

[0044] The first driving member 3 is a driving member that pushes the upper mold body 21 to perform mold closing and mold opening actions. It is usually a hydraulic or pneumatic driving device, such as a hydraulic cylinder or a pneumatic cylinder. It is firmly mounted on the main frame 1, and through a solid connection structure, such as bolt connection or welding, it is ensured that its position is stable and will not be displaced. The output end of the first driving member 3 is connected to the upper mold body 21, and the connection method adopts a reliable connection member to ensure that the power can be accurately transmitted.

[0045] The upper demoulding assembly 5 is installed on the upper mold body 21. When the die-casting process is completed and the first driving member 3 drives the upper mold body 21 to move upward, the upper demoulding assembly 5 will move upward with the upper mold body 21. When the upper demoulding assembly 5 contacts the limiting tube 4 of a certain length sleeved on the outer side of the output end of the first driving member 3, due to the obstruction of the limiting tube 4, the upper demoulding assembly 5 will move downward relative to the upper mold body 21, thereby driving the die-casting body in the upper film cavity to be separated from the upper film cavity, thereby realizing automatic demoulding of the die-casting body, without manual demoulding, improving demoulding efficiency, reducing manpower, and improving the quality of the demoulded product.

[0046] It is understandable that there are at least two first driving members 3 symmetrically mounted on the main frame 1 , which can more stably drive the upper mold body 21 to move, thereby improving the quality of the die-cast product and the stability of the demolding process.

[0047] The upper demoulding assembly 5 comprises:

[0048] An upper ejector rod 51, wherein a plurality of upper demoulding holes are provided in the upper mold cavity, and the upper ejector rod 51 is at least partially disposed in the upper demoulding holes;

[0049] An upper stripping plate 52, wherein the upper stripping plate 52 is slidably disposed on the output end of the first driving member 3 and is located above the upper mold body 21, and the upper ejector rod 51 is connected to the upper stripping plate 52;

[0050] An elastic member 53 is disposed between the upper stripping plate 52 and the upper mold body 21 .

[0051] In this technical solution, the upper stripping plate 52 is slidably arranged on the output end of the first driving member 3 and is located above the upper mold body 21. The upper stripping plate 52 can stably cover the upper mold body 21 and provide support and power transmission for the upper ejector rod 51. The upper ejector rod 51 and the upper stripping plate 52 can be connected by threaded connection or pin connection to ensure that the connection is firm and can effectively transmit the ejection force.

[0052] The top of the upper ejector rod 51 is fixedly connected to the bottom of the upper stripping plate 52, and the bottom part is located in the upper demoulding hole of the upper mold body 21. The size of the upper demoulding hole is adapted to the size of the upper ejector rod 51, and the upper ejector rod 51 can slide freely in the demoulding hole to realize the demoulding of the die casting. The number and position of the upper ejector rods 51 are reasonably arranged according to the shape and size of the upper film cavity, and are usually evenly distributed at the key parts that need to be demoulded to ensure uniform distribution of force during demoulding.

[0053] The elastic member 53 is arranged between the upper stripping plate 52 and the upper mold body 21. Generally, a high-strength spring is selected. The installation method of the elastic member 53 adopts a spring seat or a spring sleeve to ensure that the elastic member 53 can stably provide elastic force during the working process and facilitate subsequent maintenance and replacement. During the die-casting process, when the first driving member 3 drives the upper mold body 21 to move upward, the upper stripping plate 52 is blocked by the limit tube 4. Since the upper ejector rod 51 is connected to the upper stripping plate 52, the elastic member 53 begins to be compressed and stores elastic potential energy. As the upper mold body 21 continues to move upward, the upper ejector rod 51 moves downward relative to the upper mold body 21 to eject the die-cast body in the upper film cavity to achieve demolding. After the demolding is completed, the first driving member 3 drives the upper mold body 21 to move downward. During the movement, the elastic member 53 releases elastic potential energy and pushes the upper stripping plate 52 to return to the initial position, thereby achieving automatic resetting of the upper stripping plate 52.

[0054] In actual operation, the molten metal is injected into the lower mold cavity at a suitable temperature and pressure, and then the first driving member 3 is started to drive the upper mold body 21 to move downward, so that the upper mold cavity and the lower mold cavity are accurately closed to ensure the filling and molding effect of the molten metal in the mold. After a certain period of pressure holding and cooling, the first driving member 3 drives the upper mold body 21 to move upward, and at this time the upper demoulding assembly 5 starts to work to complete the demoulding of the motor fixing flange on the upper mold body.

[0055] It is understandable that, when the elastic member 53 is in a natural state, the upper ejector rod 51 can fill the upper demoulding hole but will not protrude from the upper film cavity, thereby improving the quality of the finished product after die-casting.

[0056] The upper demoulding component 5 also includes:

[0057] A guide rod 54 , wherein the guide rod 54 passes through the upper stripping plate 52 and is connected to the upper mold body 21 .

[0058] In this technical solution, two guide rods 54 are symmetrically installed on the upper mold body 21. The guide rods 54 are made of high-strength and high-precision metal rods, such as carbide rods, which are slidably connected to the upper stripping plate 52 to ensure that the upper stripping plate 52 can slide freely on the guide rods 54 and that the motion trajectory of the upper stripping plate 52 is a linear motion. The main function of the guide rods 54 is to provide precise guidance for the up and down movement of the upper stripping plate 52, to prevent the upper stripping plate 52 from deflecting or shaking during the demoulding process, and to further ensure the accuracy and stability of the demoulding action. When the first driving member 3 drives the upper mold body 21 to move upward, the upper stripping plate 52 will be blocked by the limiting tube 4. At this time, since the upper push rod 51 is connected to the upper stripping plate 52, the elastic member 53 begins to be compressed to store elastic potential energy. In this process, the guide rod 54 ensures that the upper stripping plate 52 can only move along its axial direction to achieve smooth demoulding of the die-casting body. After demoulding, while the first driving member 3 continuously drives the upper mold body 21 to move downward, the elastic member 53 releases the elastic potential energy, pushing the upper stripping plate 52 to move upward along the guide rod 54, and the upper stripping plate 52 and the upper push rod 51 return to their initial positions.

[0059] It also includes a lower demoulding component 6, which includes:

[0060] A second driving member 63, wherein the second driving member 63 is disposed on the main frame 1;

[0061] A lower stripping plate 61, wherein the lower stripping plate 61 is disposed on the output end of the second driving member 63;

[0062] A lower ejector rod 62, wherein a plurality of lower demoulding holes are opened in the lower film cavity, and the lower ejector rod 62 is disposed on the lower stripping plate 61, and the lower ejector rod 62 is at least partially disposed in the lower demoulding hole.

[0063] In this technical solution, the second driving member 63 serves as the power source of the lower demolding assembly 6, and its main function is to provide power for the lower demolding process, so that the lower ejector rod 62 can eject the die-cast body from the lower film cavity. In practical applications, the second driving member 63 can be a hydraulic cylinder or a pneumatic cylinder. The second driving member 63 is fixedly connected to the main frame 1. A common connection method is to use high-strength bolts to fix it at a predetermined position of the main frame 1 to ensure that the second driving member 63 will not be displaced or loosened during operation.

[0064] The lower stripping plate 61 is arranged on the output end of the second driving member 63. The lower stripping plate 61 is usually made of high-strength metal materials, such as high-quality carbon steel or alloy steel, to ensure that it will not be deformed or damaged when subjected to the demoulding force. The lower stripping plate 61 and the output end of the second driving member 63 can be connected by a flange. The flange surface of the output end of the lower stripping plate 61 and the second driving member 63 is tightly connected by bolts, and the connecting bolts should be evenly distributed on the die-casting to avoid uneven force.

[0065] The lower ejector rods 62 are mounted on the lower stripping plate 61, and their positions correspond to the lower demoulding holes. The lower ejector rods 62 are evenly distributed on the lower stripping plate 61 to ensure that a uniform ejection force is applied to the die casting body during demoulding, so as to avoid deformation or damage of the die casting body due to uneven force.

[0066] During the demoulding operation, when the die-casting process is completed, the upper demoulding assembly 5 is demoulding while the lower demoulding assembly 6 also starts to work, the second driving member 63 pushes the lower stripping plate 61 to move upward, and the lower stripping plate 61 drives the lower ejector rod 62 to move upward together. Since the lower ejector rod 62 is at least partially located in the lower demoulding hole, the lower ejector rod 62 will apply an upward ejection force to the die-cast body in the lower film cavity. When this ejection force exceeds the friction and adsorption force between the die-cast body and the lower film cavity, the die-cast body will be separated from the lower film cavity.

[0067] It is understandable that, during the die-casting process, the lower ejector pin 62 can fill the lower demoulding hole but will not protrude from the upper film cavity, thereby improving the quality of the finished product after die-casting.

[0068] It also includes a feeding pipe 7, which is arranged on the upper mold body 21 and is slidably connected to the upper stripping plate 52.

[0069] In this technical solution, the feed pipe 7 is fixedly mounted on the upper mold body 21 and communicated with the upper film cavity. It is a channel for conveying the molten metal to the lower film cavity. The feed pipe 7 is usually made of high temperature resistant and corrosion resistant metal materials, such as stainless steel or heat resistant alloys, to withstand the scouring and corrosion of the high temperature molten metal, ensuring that it will not be damaged or leaked during long-term use. Before the die-casting operation begins, the molten metal heated to a suitable temperature and having appropriate fluidity is conveyed to the lower film cavity through the feed pipe 7. The molten metal is injected from the inlet end of the feed pipe 7, flows along the pipeline of the feed pipe 7, and finally reaches the upper film cavity and the lower film cavity.

[0070] Before the feeding pipe 7 performs the feeding operation, the first driving member 3 drives the upper mold body 21 to press the lower mold body 22, and the lower and upper mold cavities of the mold body 2 are ready to receive the molten metal. The staff injects the molten metal into the lower and upper mold cavities of the mold body through the feeding pipe 7 to start the die casting process. After the molten metal is cooled and formed, the upper demolding assembly 5 and the lower demolding assembly 6 respectively perform demolding operations on the die casting body and take the die casting body out of the mold cavity.

[0071] A third driving member 8 is provided on the main frame 1 , and a piston rod 9 is provided on the output end of the third driving member 8 . The piston rod 9 is provided in the feeding pipe 7 , and the third driving member 8 can drive the piston rod 9 to move in the feeding pipe 7 .

[0072] The third driving member 8 is a hydraulic rod.

[0073] In this technical solution, the third driving member 8 is firmly mounted on the main frame 1 to ensure that the connection will not become loose due to vibration during long-term die-casting operations. At the same time, the piston rod 9 installed at the output end of the third driving member 8 is coaxial with the feeding pipe 7 to ensure that the piston rod 9 can move smoothly in the feeding pipe 7 during movement to avoid offset or jamming. The piston rod 9 is usually made of high-strength, wear-resistant metal materials, such as alloy steel or tool steel, to ensure its strength and durability when repeatedly moving in the feeding pipe 7. The piston rod 9 is connected to the output end of the third driving member 8 through a precise connection structure, such as a threaded connection or a key connection, and strict concentricity adjustment must be performed to ensure the accuracy and reliability of power transmission.

[0074] During the die-casting process, the staff can use the third driving member 8 to drive the piston rod 9 to move upward and disengage from the feeding pipe 7, and then pass the molten metal through the upper membrane cavity and the lower membrane cavity compressed by the feeding pipe 7, and continuously feed the molten metal. When the molten metal is injected into the upper membrane cavity and the lower membrane cavity through the feeding pipe 7 and forms a certain height in the feeding pipe 7, the third driving member 8 is started again. The third driving member 8 can drive the piston rod 9 to move at a certain frequency and speed in the feeding pipe 7, so that the molten metal produces a flow effect, which helps to eliminate bubbles in the molten metal and allow the molten metal to be fully filled into the upper membrane cavity and the lower membrane cavity, thereby improving the quality of the product after die-casting. Moreover, the third driving member 8 can drive the piston rod 9 to move downward to contact with the lower membrane cavity, so that the middle part of the motor fixing flange after die-casting is a hollow structure, thereby reducing the processing of the middle part, and facilitating the molding of the motor fixing flange after later cooling.

[0075] The third driving member 8 is installed on the main frame 1, and can push the metal liquid inside the feeding pipe 7 into the lower membrane cavity and the upper membrane cavity through the piston rod 9, thereby increasing the filling of the lower membrane cavity and the upper membrane cavity with the metal liquid.

[0076] The upper mold body 21 is provided with a liquid outlet 10 , and the liquid outlet 10 is communicated with the upper mold cavity.

[0077] In this technical solution, a plurality of liquid outlet holes 10 connected to the upper membrane cavity are opened on the top of the upper mold body 21. When the molten metal is injected into the upper membrane cavity and the lower membrane cavity formed by the upper mold body 21 and the lower mold body 22 after being compressed through the feeding pipe 7, when the piston rod 9 is extended into the feeding pipe 7 to press the molten metal downward, the air in the upper mold body 21 and the lower mold body 22 can be quickly discharged, effectively avoiding the formation of high-pressure gas in the mold cavity, ensuring that the molten metal can flow smoothly in the subsequent filling process, avoiding the quality problems of the die-casting products caused by gas obstruction, and enabling the molten metal to be more fully filled into the upper membrane cavity and the lower membrane cavity, effectively avoiding the formation of bubbles, cold shut and other defects in the mold cavity, ensuring the internal quality and surface finish of the die-casting products. In the process of continuous downward pressure of the piston rod 9, when the molten metal fully fills the lower membrane cavity and the upper membrane cavity, it can be discharged from the liquid outlet hole 10. The staff can obtain the information that the upper metal liquid is fully filled by observing the liquid outlet hole 10.

[0078] It can be understood that by opening the liquid outlet hole 10 at the top of the upper mold body 21, when the metal liquid flows out from the liquid outlet hole 10 at the top of the upper mold body 21, it can be said that the metal liquid has fully filled the lower membrane cavity and the upper membrane cavity below the liquid outlet hole 10.

[0079] A cooling oil circuit is provided inside the upper mold body 21 and the lower mold body 22 .

[0080] In this technical solution, a cooling oil circuit is opened on the inner side of the upper mold body 21 and the lower mold body 22, and the oil circuit is located on the outer side of the lower membrane cavity and the upper membrane cavity. During the die-casting process, when the temperature of the upper mold body 21 and the lower mold body 22 rises sharply due to contact with the high-temperature molten metal, in order to improve the cooling efficiency, the cooling oil continuously flows into the cooling oil circuit under the drive of the oil pump. When flowing through the inner side of the upper mold body 21 and the lower mold body 22 respectively, the cooling oil can quickly absorb the heat on the mold surface, thereby improving the cooling efficiency of the die-casting.

[0081] The cooling oil circuit can guide the cooling oil to evenly cover the inner surface of the upper mold body 21 and the lower mold body 22, thereby improving the cooling efficiency of the upper mold body 21 and the lower mold body 22. This can not only ensure that the die-cast motor fixing flange meets the high precision requirements, but also prevent the performance of the mold material from being degraded due to local overheating, thereby extending the service life of the mold.

[0082] At the same time, the existence of the cooling oil circuit can also effectively control the cooling rate of the die casting. By adjusting the flow rate and temperature of the cooling oil, the cooling rate of the upper mold body 21 and the lower mold body 22 can be accurately controlled to avoid defects such as stress concentration and cracks in the die casting caused by too fast cooling. For example, during the solidification stage of the molten metal, the flow rate of the cooling oil is reasonably adjusted to cool the mold at an appropriate speed, which helps to homogenize the internal structure of the casting and improve the mechanical properties of the motor fixing flange.

[0083] A limiting protrusion 11 is disposed on the lower mold body 22 and located outside the lower film cavity, and a limiting groove is disposed on the upper mold body 21 facing one side of the lower mold body 22 and at a position matching with the limiting protrusion 11 .

[0084] In this technical solution, a limiting protrusion 11 is provided on the lower mold body 22 and is located on the outer side of the lower membrane cavity. The limiting protrusion 11 is made of high-strength, wear-resistant metal material, such as alloy steel, and its dimensional accuracy and surface finish are guaranteed through precise processing technology. The limiting protrusion 11 is usually in the shape of a rectangular parallelepiped or a cylinder to ensure that reliable positioning and limiting effects can be provided during the mold closing process. A limiting groove is provided on the upper mold body 21 facing the side of the lower mold body 22 and at a position matching the limiting protrusion 11. The size of the limiting groove is strictly matched with the limiting protrusion 11 to ensure that the limiting protrusion 11 can be completely embedded in the limiting groove to achieve a tight fit.

[0085] During the mold closing process, when the first driving member 3 drives the upper mold body 21 to move downward close to the lower mold body 22, the limiting protrusion 11 will gradually align with the limiting groove. As the upper mold body 21 continues to descend, the limiting protrusion 11 will be accurately embedded in the limiting groove. This process realizes the rapid and precise positioning of the upper mold body 21 and the lower mold body 22, ensuring that the upper membrane cavity and the lower membrane cavity can be accurately aligned. At the same time, the close fit between the limiting protrusion 11 and the limiting groove can also enhance the stability of the mold during the die-casting process, and prevent relative displacement or shaking between the upper mold body 21 and the lower mold body 22. For example, during the die-casting process, the molten metal is subjected to high pressure in the mold cavity, which will produce a large impact force on the mold. At this time, the cooperation between the limiting protrusion 11 and the limiting groove can effectively resist this impact force, ensure the structural stability of the mold, and thus ensure the dimensional accuracy and quality of the die-cast motor fixing flange.

[0086] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A fixed flange die-casting device for a motor, characterized in that: include: A main frame (1), wherein a die-casting space is provided in the middle of the main frame (1); A mold body (2), the mold body (2) being arranged in the die-casting space, the mold body (2) comprising an upper mold body (21) and a lower mold body (22), the lower mold body (22) being provided with a lower mold cavity, and the upper mold body (21) being provided with an upper mold cavity on a side facing the lower mold body (22); A first driving member (3), the first driving member (3) being arranged on the main frame (1), the output end of the first driving member (3) being connected to the upper mold body (21), the first driving member (3) being used to drive the upper mold body (21) to move, and a limiting tube (4) being sleeved on the outer side of the output end of the first driving member (3); An upper demoulding component (5) is arranged on the upper mold body (21). When the first driving member (3) drives the upper mold body (21) to move upward, after the upper demoulding component (5) contacts the limiting tube (4), the upper demoulding component (5) will drive the die-cast body in the upper mold cavity to separate from the upper mold cavity.

2. The fixed flange die-casting device of the motor according to claim 1, characterized in that: The upper demoulding component (5) comprises: An upper ejector rod (51), wherein a plurality of upper demoulding holes are provided in the upper mold cavity, and the upper ejector rod (51) is at least partially disposed in the upper demoulding holes; An upper stripping plate (52), the upper stripping plate (52) is slidably disposed on the output end of the first driving member (3) and is located above the upper mold body (21), and the upper ejector rod (51) is connected to the upper stripping plate (52); An elastic member (53), wherein the elastic member (53) is arranged between the upper stripping plate (52) and the upper mold body (21).

3. The fixed flange die-casting device of the motor according to claim 2, characterized in that: The upper demoulding component (5) further comprises: A guide rod (54), wherein the guide rod (54) passes through the upper stripping plate (52) and is connected to the upper mold body (21).

4. The fixed flange die-casting device of the motor according to claim 1, characterized in that: The invention also comprises a lower demoulding component (6), wherein the lower demoulding component (6) comprises: A second driving member (63), wherein the second driving member (63) is arranged on the main frame (1); A lower stripping plate (61), wherein the lower stripping plate (61) is arranged on the output end of the second driving member (63); A lower ejector rod (62), wherein a plurality of lower demoulding holes are opened in the lower film cavity, the lower ejector rod (62) is arranged on the lower stripping plate (61), and the lower ejector rod (62) is at least partially arranged in the lower demoulding hole.

5. The fixed flange die-casting device for a motor according to any one of claims 1 to 4, characterized in that: It also includes a feeding pipe (7), which is arranged on the upper mold body (21) and is slidably connected to the upper stripping plate (52).

6. The fixed flange die-casting device of the motor according to claim 5, characterized in that: A third driving member (8) is provided on the main frame (1), a piston rod (9) is provided on the output end of the third driving member (8), the piston rod (9) is arranged in the feeding pipe (7), and the third driving member (8) can drive the piston rod (9) to move in the feeding pipe (7).

7. The fixed flange die-casting device of the motor according to claim 6, characterized in that: The third driving member (8) is a hydraulic rod.

8. The fixed flange die-casting device of the motor according to claim 1, characterized in that: The upper mold body (21) is provided with a liquid outlet hole (10), and the liquid outlet hole (10) is communicated with the upper film cavity.

9. The fixed flange die-casting device of the motor according to claim 1, characterized in that: The upper mold body (21) and the lower mold body (22) are provided with cooling oil circuits on their inner sides.

10. The fixed flange die-casting device of the motor according to claim 1, characterized in that: A limiting protrusion (11) is provided on the lower mold body (22) and located outside the lower membrane cavity, and a limiting groove is provided on the upper mold body (21) facing the side of the lower mold body (22) and at a position matching the limiting protrusion (11).

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