Die-casting die for electric drive shell

Abstract

The utility model relates to a die-casting die for an electric drive shell, which comprises an upper die, a lower die and a die foot, the upper die and the lower die are stacked up and down, an upper die core and a lower die core are arranged between the upper die and the lower die, the upper die core and the lower die core are stacked up and down, the die foot is arranged on the lower end face of the lower die, and the die foot is arranged on the lower end face of the lower die. A front inclined core-pulling structure is mounted at the front part between the upper die and the lower die, a left core-pulling structure is mounted at the left part between the upper die and the lower die, a right core-pulling structure is mounted at the right part between the upper die and the lower die, and a rear core-pulling structure is mounted at the rear part between the upper die and the lower die; the front inclined core-pulling structure is provided with an inclined core-pulling block which is inserted into the upper mold core and the lower mold core, the left core-pulling structure is provided with a left core-pulling block which is inserted into the upper mold core and the lower mold core, and the right core-pulling structure is provided with a right core-pulling block which is inserted into the upper mold core and the lower mold core. The device has the characteristics of improving the product quality, improving the production efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, in particular to a die-casting mold for an electric drive housing. Background Art

[0002] The overall height of the electric drive housing is relatively large. During the production process using a die-casting mold, the filling speed of the metal is slow, which will cause the problem of product layering and affect the product quality. In order to facilitate increasing the flow rate of the molten metal, it is necessary to transform the mold structure. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a die-casting mold for an electric drive housing, which has the characteristics of improving product quality and production efficiency.

[0004] The technical solution adopted by the utility model to solve its technical problem is: to provide a die-casting mold for an electric drive housing, including an upper mold, a lower mold and mold feet. The upper mold and the lower mold are arranged in an up-and-down stacked manner, and an upper mold core and a lower mold core are installed between them. The upper mold core and the lower mold core are arranged in an up-and-down stacked manner. Mold feet are installed on the lower end surface of the lower mold. A front oblique core-pulling structure is installed at the front part between the upper mold and the lower mold. A left core-pulling structure is installed at the left part between the upper mold and the lower mold. A right core-pulling structure is installed at the right part between the upper mold and the lower mold. A rear core-pulling structure is installed at the rear part between the upper mold and the lower mold. An oblique core-pulling block inserted into the upper mold core and the lower mold core is provided on the front oblique core-pulling structure. A left core-pulling block inserted into the upper mold core and the lower mold core is provided on the left core-pulling structure. A right core-pulling block inserted into the upper mold core and the lower mold core is provided on the right core-pulling structure. A rear core-pulling block inserted into the upper mold core and the lower mold core is provided on the rear core-pulling structure. The oblique core-pulling block, the left core-pulling block, the right core-pulling block, the rear core-pulling block, the upper mold core and the lower mold core surround to form a cavity structure. A gate structure with its lower end inserted above the left core-pulling structure is installed on the left part of the upper mold. A main runner communicating with the cavity structure is provided on the right front side at the lower end of the gate structure. An auxiliary runner communicating with the cavity structure is provided on the left rear side of the gate structure. The right end of the main runner bifurcates to form several branch runners communicating with the right end of the cavity structure. The auxiliary runner extends along the upper side of the left core-pulling block and the upper side of the rear core-pulling block and communicates with the rear part of the cavity structure.

[0005] In this technical solution, by setting the main runner and the auxiliary runner to increase the inflow of the molten metal, thereby increasing the flow speed of the molten metal, ensuring that the molten metal can quickly fill the cavity structure, guaranteeing the product quality and improving the production efficiency of the product.

[0006] The front inclined core-pulling structure, left core-pulling structure, right core-pulling structure and rear core-pulling structure all adopt the same type of structure, which includes a die carrier structure installed on the side of the lower die and a core-pulling oil cylinder installed on the die carrier structure. At the same time, there is also a slider seat embedded in the upper die and the lower die. One end of the slider seat is connected to the main shaft of the core-pulling oil cylinder, and the other end of the slider seat is connected to an inclined core-pulling block, left core-pulling block, right core-pulling block or rear core-pulling block.

[0007] As a supplement to this technical solution, several slag pocket structures are arranged on the outer circle of the left part of the mold cavity. An evacuation flow channel communicating with all the slag pocket structures is arranged on the outer circle of the slag pocket structures. An evacuation assembly is installed at the front side of the right core-pulling structure, and the evacuation assembly is communicated with the evacuation flow channel.

[0008] In this technical solution, the slag pocket structure is set to facilitate the discharge of excessive molten metal. The evacuation flow channel is set to facilitate the extraction of air from the mold cavity structure, so as to form a negative pressure in the mold cavity structure and increase the flow rate of the molten metal. The evacuation assembly is set to control the flow direction of the molten metal.

[0009] As a supplement to this technical solution, the evacuation assembly includes an upper flow channel block, a lower flow channel block, an evacuation sleeve and a plug slider. The lower flow channel block is embedded and installed between the lower die and the lower die core. The upper flow channel block is installed on the upper side of the lower flow channel block. The evacuation sleeve is installed on the right side of the upper flow channel block and the lower flow channel block. The plug slider is slidably installed in the evacuation sleeve. An extraction oil cylinder is installed on the right side of the evacuation sleeve. The main shaft of the extraction oil cylinder is connected to the plug slider. An extraction pipeline is arranged on the lower side of the evacuation sleeve.

[0010] In this technical solution, the upper flow channel block and the lower flow channel block are set to ensure the layout of the extraction flow channel. The evacuation sleeve is set to facilitate the installation of the plug slider. The plug slider is set to close or open the evacuation sleeve. The extraction pipeline is installed to dock with an external suction valve.

[0011] As a supplement to this technical solution, an extraction flow channel is arranged on the left part of the evacuation assembly. Several first ejection holes and second ejection holes are arranged on the extraction flow channel. Thimble structures are installed in both the first ejection holes and the second ejection holes. The first ejection holes and the second ejection holes are set to facilitate the installation of the thimble structures. The thimble structures are installed to facilitate rapid demolding.

[0012] As a supplement to this technical solution, a thimble plate that moves up and down is installed in the mold feet. An extension part extending below the evacuation assembly is arranged on one side of the thimble plate. The lower end of the thimble structure is installed in the extension part.

[0013] As a supplement to this technical solution, a central pipe groove penetrating the front and rear sides is provided in the middle of the upper end surface of the upper mold, and a rectangular cooling pipe installation groove is provided in the middle of the central pipe groove.

[0014] Beneficial effects: The utility model relates to a die-casting mold for an electric drive housing. By providing a main runner and an auxiliary runner to increase the inflow of molten metal, the flow velocity of the molten metal is thereby increased, ensuring that the molten metal can quickly fill the cavity structure, guaranteeing the product quality, and improving the production efficiency of the product; it has the characteristics of improving product quality and production efficiency. Description of the drawings

[0015] Figure 1 is the front view of the utility model;

[0016] Figure 2 is the top view of the utility model;

[0017] Figure 3 is the top view of the utility model after removing the upper mold and the upper mold core;

[0018] Figure 4 is the bottom view of the utility model;

[0019] Figure 5 is the structural view of the upper mold core and the lower mold core of the utility model;

[0020] Figure 6 is the top view of the vacuum extraction assembly of the utility model;

[0021] Figure 7 is the utility model Figure 6 Cross-sectional view in the A-A direction;

[0022] Figure 8 is the structural view of the slag pocket structure of the utility model.

[0023] Illustration: 1. Upper mold, 2. Lower mold, 3. Mold feet, 4. Front part inclined core-pulling structure, 5. Left core-pulling structure, 6. Right core-pulling structure, 7. Rear core-pulling structure, 8. Rectangular cooling pipe installation groove, 9. Central pipe groove, 10. Gate structure, 11. Inclined core-pulling block, 12. Left core-pulling block, 13. Right core-pulling block, 14. Rear core-pulling block, 15. Main runner, 16. Auxiliary runner, 17. Insert, 18. Cavity structure, 19. Ejector plate, 20. Extension part, 21. Upper mold core, 22. Lower mold core, 23. Vacuum extraction assembly, 24. Upper runner block, 25. Lower runner block, 26. Ejector pin structure, 27. Vacuum extraction sleeve, 28. Plug slider, 29. Extraction oil cylinder, 30. Extraction air pipe, 31. Slag pocket structure, 32. Vacuum extraction runner, 33. First ejection hole, 34. Second ejection hole. Detailed implementation manners

[0024] The present utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0025] An embodiment of the present utility model relates to a die-casting mold for an electric drive housing, as Figure 1 shown in FIG. 4, which includes an upper mold 1, a lower mold 2 and a mold foot 3. The upper mold 1 and the lower mold 2 are arranged in an up-and-down stacked manner, and an upper mold core 21 and a lower mold core 22 are installed between them. The upper mold core 21 and the lower mold core 22 are arranged in an up-and-down stacked manner. A mold foot 3 is installed on the lower end surface of the lower mold 2. A front inclined core-pulling structure 4 is installed at the front part between the upper mold 1 and the lower mold 2. A left core-pulling structure 5 is installed at the left part between the upper mold 1 and the lower mold 2. A right core-pulling structure 6 is installed at the right part between the upper mold 1 and the lower mold 2. A rear core-pulling structure 7 is installed at the rear part between the upper mold 1 and the lower mold 2. An inclined core-pulling block 11 that inserts into the upper mold core 21 and the lower mold core 22 is provided on the front inclined core-pulling structure 4. A left core-pulling block 12 that inserts into the upper mold core 21 and the lower mold core 22 is provided on the left core-pulling structure 5. A right core-pulling block 13 that inserts into the upper mold core 21 and the lower mold core 22 is provided on the right core-pulling structure 6. A rear core-pulling block 14 that inserts into the upper mold core 21 and the lower mold core 22 is provided on the rear core-pulling structure 7. The inclined core-pulling block 11, the left core-pulling block 12, the right core-pulling block 13, the rear core-pulling block 14, the upper mold core 21 and the lower mold core 22 surround to form a cavity structure 18. A gate structure 10 with its lower end inserted into the upper side of the left core-pulling structure 5 is installed at the left part of the upper mold 1. A main runner 15 that communicates with the cavity structure 18 is provided on the right front side at the lower end of the gate structure 10. An auxiliary runner 16 that communicates with the cavity structure 18 is provided on the left rear side of the gate structure 10. The right end of the main runner 15 branches to form a plurality of branch runners that communicate with the right end of the cavity structure 18. The auxiliary runner 16 extends along the upper side of the left core-pulling block 12 and the upper side of the rear core-pulling block 14 and communicates with the rear part of the cavity structure 18.

[0026] In this technical solution, by providing the main runner 15 and the auxiliary runner 16, the inflow amount of the molten metal is increased, thereby increasing the flow speed of the molten metal, ensuring that the molten metal can quickly fill the cavity structure 18, guaranteeing the product quality and improving the production efficiency of the product.

[0027] The front inclined core-pulling structure 4, the left core-pulling structure 5, the right core-pulling structure 6, and the rear core-pulling structure 7 all adopt the same type of structure, which includes a die carrier structure installed on the side of the lower die 2 and a core-pulling oil cylinder installed on the die carrier structure. At the same time, there is also a slider seat embedded in the upper die 1 and the lower die 2. One end of the slider seat is connected to the main shaft of the core-pulling oil cylinder, and the other end of the slider seat is connected to the inclined core-pulling block 11, the left core-pulling block 12, the right core-pulling block 13, or the rear core-pulling block 14.

[0028] As Figure 8 shown, as a supplement to this technical solution, a number of slag pocket structures 31 are provided on the outer circle of the left part of the mold cavity. An evacuation flow channel 32 communicating with all the slag pocket structures 31 is provided on the outer circle of the slag pocket structures 31. An evacuation assembly 23 is installed at the front side of the right core-pulling structure 6, and the evacuation assembly 23 is communicated with the evacuation flow channel 32.

[0029] In this technical solution, the slag pocket structure 31 is provided to facilitate the discharge of excessive molten metal. The evacuation flow channel 32 is provided to facilitate the extraction of air from the mold cavity structure 18, so as to form a negative pressure in the mold cavity structure 18 and increase the flow rate of the molten metal. The evacuation assembly 23 is provided to control the flow direction of the molten metal.

[0030] As Figure 5 — Figure 7 shown, as a supplement to this technical solution, the evacuation assembly 23 includes an upper flow channel block 24, a lower flow channel block 25, an evacuation sleeve 27, and a plug slider 28. The lower flow channel block 25 is embedded and installed between the lower die 2 and the lower die core 22. The upper flow channel block 24 is installed on the upper side of the lower flow channel block 25. The evacuation sleeve 27 is installed on the right side of the upper flow channel block 24 and the lower flow channel block 25. The plug slider 28 is slidably installed in the evacuation sleeve 27. An extraction oil cylinder 29 is installed on the right side of the evacuation sleeve 27. The main shaft of the extraction oil cylinder 29 is connected to the plug slider 28. An air extraction pipeline 30 is provided on the lower side of the evacuation sleeve 27.

[0031] In this technical solution, the upper flow channel block 24 and the lower flow channel block 25 are provided to ensure the layout of the extraction flow channel. The evacuation sleeve 27 is provided to facilitate the installation of the plug slider 28. The plug slider 28 is provided to close or open the evacuation sleeve 27. The air extraction pipeline 30 is installed to dock with an external suction valve.

[0032] As a supplement to this technical solution, an extraction channel is provided at the left part of the vacuum extraction assembly 23. A number of first ejection holes 33 and second ejection holes 34 are provided on the extraction channel. Thimble structures 26 are installed in both the first ejection holes 33 and the second ejection holes 34. The first ejection holes 33 and the second ejection holes 34 are provided to facilitate the installation of the thimble structures 26, and the thimble structures 26 are installed to facilitate rapid demolding.

[0033] As a supplement to this technical solution, a thimble plate 19 that moves up and down is installed in the mold feet 3. An extension 20 extending below the vacuum extraction assembly 23 is provided on one side of the thimble plate 19. The lower end of the thimble structure 26 is installed in the extension 20.

[0034] As a supplement to this technical solution, a middle pipe groove 9 penetrating the front and rear sides is provided in the middle of the upper end surface of the upper mold 1. A rectangular cooling pipe installation groove 8 is provided in the middle of the middle pipe groove 9.

[0035] An insert 17 is installed at the left front part of the mold cavity structure 18. The upper end of the insert 17 is connected to the upper mold core 21.

[0036] The above has introduced in detail a die-casting mold for an electric drive housing provided by this application. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A die-casting mold for an electric drive housing, comprising an upper mold (1), a lower mold (2) and a mold foot (3), wherein the upper mold (1) and the lower mold (2) are arranged in an up-and-down stacking manner, an upper mold core (21) and a lower mold core (22) are installed between the two, the upper mold core (21) and the lower mold core (22) are arranged in an up-and-down stacking manner, a mold foot (3) is installed on the lower end surface of the lower mold (2), a front oblique core-pulling structure (4) is installed at the front portion between the upper mold (1) and the lower mold (2), a left core-pulling structure (5) is installed at the left portion between the upper mold (1) and the lower mold (2), a right core-pulling structure (6) is installed at the right portion between the upper mold (1) and the lower mold (2), and a rear core-pulling structure (7) is installed at the rear portion between the upper mold (1) and the lower mold (2), characterized in that: The front oblique core-pulling structure (4) is provided with an oblique core-pulling block (11) inserted into the upper mold core (21) and the lower mold core (22); the left core-pulling structure (5) is provided with a left core-pulling block (12) inserted into the upper mold core (21) and the lower mold core (22); the right core-pulling structure (6) is provided with a right core-pulling block (13) inserted into the upper mold core (21) and the lower mold core (22); the rear core-pulling structure (7) is provided with a rear core-pulling block (14) inserted into the upper mold core (21) and the lower mold core (22); the oblique core-pulling block (11), the left core-pulling block (12), the right core-pulling block (13), the rear core-pulling block (14), the upper mold core (21) and the lower mold core (22) are ) is surrounded by a cavity structure (18), the left part of the upper mold (1) is provided with a gate structure (10) whose lower end is inserted into the upper side of the left core pulling structure (5), the right front part of the lower end of the gate structure (10) is provided with a main flow channel (15) connected to the cavity structure (18), the left rear part of the gate structure (10) is provided with an auxiliary flow channel (16) connected to the cavity structure (18), the right end of the main flow channel (15) is forked to form a plurality of branch flow channels connected to the right end of the cavity structure (18), the auxiliary flow channel (16) extends along the upper side of the left core pulling block (12) and the upper side of the rear core pulling block (14), and is connected to the rear of the cavity structure (18).

2. A die-casting mold for an electric drive housing according to claim 1, characterized in that: A plurality of slag bag structures (31) are arranged on the left outer ring of the mold cavity, and a vacuum flow channel (32) connected to all the slag bag structures (31) is arranged on the outer ring of the slag bag structure (31). A vacuum assembly (23) is installed on the front side of the right core pulling structure (6), and the vacuum assembly (23) is connected to the vacuum flow channel (32).

3. A die-casting mold for an electric drive housing according to claim 2, characterized in that: The vacuum pumping assembly (23) comprises an upper flow channel block (24), a lower flow channel block (25), a vacuum pumping sleeve (27) and a plug slider (28); the lower flow channel block (25) is embedded and installed between the lower mold (2) and the lower mold core (22); the upper flow channel block (24) is installed on the upper side of the lower flow channel block (25); the vacuum pumping sleeve (27) is installed on the right side of the upper flow channel block (24) and the lower flow channel block (25); the plug slider (28) is slidably installed in the vacuum pumping sleeve (27); the right side of the vacuum pumping sleeve (27) is installed with an extraction cylinder (29); the main shaft of the extraction cylinder (29) is connected to the plug slider (28); and the lower side of the vacuum pumping sleeve (27) is provided with an exhaust pipe (30).

4. A die-casting mold for an electric drive housing according to claim 2, characterized in that: The left part of the vacuum assembly (23) is provided with an extraction channel, and a plurality of first ejection holes (33) and second ejection holes (34) are provided on the extraction channel. Ejector pin structures (26) are installed in the first ejection holes (33) and the second ejection holes (34).

5. A die-casting mold for an electric drive housing according to claim 4, characterized in that: An ejector plate (19) that moves up and down is installed in the mold foot (3), and an extension portion (20) extending to the bottom of the vacuum assembly (23) is provided on one side of the ejector plate (19), and the lower end of the ejector structure (26) is installed in the extension portion (20).

6. The die-casting mold for an electric drive housing according to claim 1, characterized in that: A middle pipe groove (9) penetrating the front and rear sides is arranged in the middle of the upper end surface of the upper mold (1), and a rectangular cooling pipe installation groove (8) is arranged in the middle of the middle pipe groove (9).

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