Die-casting die for speed reducer shell

Abstract

The die-casting die comprises an upper die, a lower die and an upper ejector pin panel, the upper die and the lower die are arranged in an up-and-down stacking mode, an upper die core and a lower die core which are arranged in an up-and-down stacking mode are installed between the upper die and the lower die, a die cavity structure is arranged between the lower die core and the upper die core, and the upper ejector pin panel is arranged on the lower die core. A left core-pulling structure is installed on the left side of the lower die, a right core-pulling structure is installed on the right side of the lower die, an inclined core-pulling structure with the rear end inclining rightwards is installed on the front side of the lower die, a pouring gate structure is installed on the rear portion of the upper die, and a main runner surrounding the rear side of a die cavity structure is arranged on the front side of the pouring gate structure. A plurality of branch runners are arranged between the main runner and the mold cavity structure, an upper ejector pin panel is mounted on the upper end surface of the upper mold, and a plurality of ejector pin structures inserted into the mold cavity structure are mounted on the upper ejector pin panel. The utility model has the characteristics that the high-strength characteristic of a product is ensured, the product is convenient to form, and the problem of shrinkage cavities of the product is avoided.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, and in particular to a die casting mold for a reducer housing. Background Technology

[0002] During operation, internal gears, shafts, and other components transmit torque and force, subjecting the housing to complex loads. Therefore, the reducer housing needs sufficient strength to withstand these loads and prevent failures such as cracking and deformation. Frequent starts and stops and load changes can cause significant impacts on the housing, requiring high strength to cope. Simultaneously, the housing must have sufficient rigidity to minimize deformation under load, avoiding interference with the normal assembly and meshing accuracy of internal components. Otherwise, gear wear will be accelerated, reducing the reducer's transmission efficiency and service life. Furthermore, extremely high sealing performance is required: the lubricating oil inside the reducer is crucial for component lubrication and heat dissipation. To prevent lubricating oil leakage, which can lead to poor lubrication and accelerated component wear, the reducer housing must have excellent sealing properties.

[0003] To ensure that the reducer housing achieves the above-mentioned effects, a die-casting mold structure for producing the reducer housing needs to be designed. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a die-casting mold for reducer housing, which has the characteristics of ensuring high strength of the product, facilitating product molding, and avoiding the problem of shrinkage cavities in the product.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a die-casting mold for a reducer housing is provided, including an upper mold, a lower mold, and an upper ejector plate. The upper mold and the lower mold are stacked vertically. An upper mold core and a lower mold core are stacked vertically between the upper mold and the lower mold. A mold cavity structure is provided between the lower mold core and the upper mold core. A left core-pulling structure is installed on the left side of the lower mold, and a right core-pulling structure is installed on the right side of the lower mold. An inclined core-pulling structure with its rear end tilted to the right is installed on the front side of the lower mold. A gate structure is installed at the rear of the upper mold. A main runner is provided on the front side of the gate structure, surrounding the rear side of the mold cavity structure. Several branch runners are provided between the main runner and the mold cavity structure. An upper ejector plate is installed on the upper end face of the upper mold, and several ejector pin structures that insert into the mold cavity structure are installed on the upper ejector plate.

[0006] In this technical solution, a mold cavity structure is set to ensure product molding. At the same time, a left core-pulling structure, a right core-pulling structure, and an oblique core-pulling structure are set to ensure the integrity of the product's local structure. Main runners and branch runners are set to facilitate rapid injection of molten aluminum, thereby improving the filling speed of molten aluminum and ensuring product production efficiency. Additionally, an upper ejector plate is set to facilitate product demolding.

[0007] As a supplement to this technical solution, the left core-pulling structure includes a left core-pulling bracket, a left core-pulling cylinder, a left core-pulling slider, and a left core-pulling block. The left core-pulling bracket is installed on the left side of the lower mold. A left core-pulling cylinder with its main shaft facing right is installed on the left core-pulling bracket. A left core-pulling slider is installed on the main shaft of the left core-pulling cylinder. A left core-pulling block that inserts into the mold cavity structure is installed on the right end of the left core-pulling slider.

[0008] As a supplement to this technical solution, two venting block assemblies are installed side by side at the front of the lower mold.

[0009] As a supplement to this technical solution, the front side of the mold cavity structure is provided with several slag bag structures surrounding the mold cavity structure. The slag bag structures and the venting block assembly are connected by several shallow venting grooves. By setting several slag bag structures, gas can be quickly discharged. At the same time, by setting two venting block assemblies side by side, air can be discharged easily, avoiding the formation of air shrinkage cavities in the product and improving the structural strength of the product.

[0010] As a supplement to this technical solution, the inclined core-pulling structure includes an inclined core-pulling bracket, an inclined core-pulling cylinder, and an inclined core-pulling slider. The inclined core-pulling bracket is installed on the front side of the lower mold, the inclined core-pulling cylinder is installed on the inclined core-pulling bracket, the inclined core-pulling slider is installed on the main shaft of the inclined core-pulling cylinder, and the inclined core-pulling slider is inserted into the mold cavity structure.

[0011] As a supplement to this technical solution, the right core-pulling structure includes a right core-pulling bracket, a right core-pulling cylinder, a right core-pulling guide plate, a right core-pulling slider, and a right core. The right core-pulling bracket is installed on the right side of the lower mold. Two right core-pulling guide plates are embedded side by side at the right edge of the lower mold. A right core-pulling slider is installed between the right core-pulling guide plates. A right core-pulling cylinder with a main shaft and one end connected to the right core-pulling slider is installed on the right core-pulling bracket. A right core is installed at the other end of the right core-pulling slider.

[0012] Beneficial effects: This utility model relates to a die-casting mold for a reducer housing. The mold cavity structure ensures product molding, while the left, right, and oblique core-pulling structures ensure the integrity of local structures. The main flow channel and branch flow channels facilitate rapid aluminum injection, increasing the filling speed and improving production efficiency. The upper ejector plate facilitates demolding. This design ensures high product strength, facilitates molding, and avoids air pockets. Attached Figure Description

[0013] Figure 1 This is a structural view of the present invention;

[0014] Figure 2 This is a top view of the lower mold described in this utility model;

[0015] Figure 3 This is a top view of the exhaust slag bag described in this utility model;

[0016] Figure 4 This is a top view of the present invention. Detailed Implementation

[0017] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0018] The present invention relates to a die-casting mold for a reducer housing, such as... Figure 1 As shown in Figure 4, the mold includes an upper mold 1, a lower mold 2, and an upper ejector plate 6. The upper mold 1 and the lower mold 2 are stacked vertically. An upper mold core and a lower mold core 8, also stacked vertically, are installed between the upper mold 1 and the lower mold 2. A mold cavity structure 9 is provided between the lower mold core 8 and the upper mold core. A left core-pulling structure 4 is installed on the left side of the lower mold 2, and a right core-pulling structure 5 is installed on the right side of the lower mold 2. A slanted core-pulling structure 3 with its rear end tilted to the right is installed on the front side of the lower mold 2. A gate structure 7 is installed at the rear of the upper mold 1. A main runner 10 is provided on the front side of the gate structure 7, surrounding the rear side of the mold cavity structure 9. Several branch runners 11 are provided between the main runner 10 and the mold cavity structure 9. An upper ejector plate 6 is installed on the upper end face of the upper mold 1, and several ejector pin structures that insert into the mold cavity structure 9 are installed on the upper ejector plate 6.

[0019] In this technical solution, the mold cavity structure 9 is set to ensure that the product can be formed. At the same time, the left core pulling structure 4, the right core pulling structure 5 and the oblique core pulling structure 3 are set to ensure that the local structure of the product is intact. The main flow channel 10 and the branch flow channel 11 are set to facilitate the rapid injection of aluminum liquid and improve the filling speed of aluminum liquid, thereby ensuring the production efficiency of the product. The upper ejector plate 6 is set to facilitate the demolding of the product.

[0020] As a supplement to this technical solution, the left core-pulling structure 4 includes a left core-pulling bracket 14, a left core-pulling cylinder 15, a left core-pulling slider 16, and a left core-pulling block 17. The left core-pulling bracket 14 is installed on the left side of the lower mold 2. The left core-pulling cylinder 15 with its main shaft facing right is installed on the left core-pulling bracket 14. The left core-pulling slider 16 is installed on the main shaft of the left core-pulling cylinder 15. The left core-pulling block 17, which is inserted into the mold cavity structure 9, is installed on the right end of the left core-pulling slider 16.

[0021] As a supplement to this technical solution, two exhaust block assemblies 13 are installed side by side at the front of the lower mold 2.

[0022] As a supplement to this technical solution, the front side of the mold cavity structure 9 is provided with several slag bag structures 12 surrounding the mold cavity structure 9. The slag bag structures 12 and the venting block assembly 13 are connected by several shallow venting grooves. By setting several slag bag structures 12, gas can be discharged quickly. At the same time, by setting two parallel venting block assemblies 13, air can be discharged easily, avoiding the formation of air shrinkage cavities in the product and improving the structural strength of the product.

[0023] As a supplement to this technical solution, the inclined core-pulling structure 3 includes an inclined core-pulling bracket 18, an inclined core-pulling cylinder 19, and an inclined core-pulling slider 20. The inclined core-pulling bracket 18 is installed on the front side of the lower mold 2. The inclined core-pulling cylinder 19 is installed on the inclined core-pulling bracket 18. The inclined core-pulling slider 20 is installed on the main shaft of the inclined core-pulling cylinder 19. The inclined core-pulling slider 20 is inserted into the mold cavity structure 9.

[0024] As a supplement to this technical solution, the right core-pulling structure 5 includes a right core-pulling bracket 21, a right core-pulling cylinder 22, a right core-pulling guide plate 23, a right core-pulling slider 24, and a right core-pulling 25. The right core-pulling bracket 21 is installed on the right side of the lower mold 2. Two right core-pulling guide plates 23 are embedded side by side at the right edge of the lower mold 2. The right core-pulling slider 24 is installed between the right core-pulling guide plates 23. The right core-pulling cylinder 22, which is connected to one end of the right core-pulling slider 24, is installed on the right core-pulling bracket 21. The right core-pulling 25 is installed at the other end of the right core-pulling slider 24.

[0025] Example

[0026] When this device is in production, the molds close together, and then the molten aluminum enters the mold cavity structure 9 from the gate structure 7 through the die casting equipment. By setting the main flow channel 10 and the branch flow channel 11, the molten aluminum can quickly fill the mold cavity structure 9, which greatly improves the production efficiency of the product. At the same time, the air in the mold cavity structure 9 can be discharged through the slag bag structure 12 and the venting block assembly 13 to avoid the formation of air shrinkage cavities in the product, thereby increasing the structural strength of the product.

Claims

1. A die-casting mold for a reducer housing, characterized in that: The system includes an upper mold (1), a lower mold (2), and an upper ejector plate (6). The upper mold (1) and the lower mold (2) are stacked vertically. An upper mold core and a lower mold core (8) are stacked vertically between the upper mold (1) and the lower mold (2). A mold cavity structure (9) is provided between the lower mold core (8) and the upper mold core. A left core-pulling structure (4) is installed on the left side of the lower mold (2), and a right core-pulling structure (5) is installed on the right side of the lower mold (2). The front of the lower mold (2) The upper mold (1) is equipped with a slanted core-pulling structure (3) with its rear end tilted to the right. A gate structure (7) is installed at the rear of the upper mold (1). A main runner (10) is provided on the front side of the gate structure (7) surrounding the rear side of the cavity structure (9). Several branch runners are provided between the main runner (10) and the cavity structure (9). An upper ejector plate (6) is installed on the upper end face of the upper mold (1). Several ejector pin structures that insert into the cavity structure (9) are installed on the upper ejector plate (6).

2. The die-casting mold for a reducer housing according to claim 1, characterized in that: The left core-pulling structure (4) includes a left core-pulling bracket (14), a left core-pulling cylinder (15), a left core-pulling slider (16), and a left core-pulling block (17). The left core-pulling bracket (14) is installed on the left side of the lower mold (2). The left core-pulling cylinder (15) with its main shaft facing right is installed on the left core-pulling bracket (14). The left core-pulling slider (16) is installed on the main shaft of the left core-pulling cylinder (15). The left core-pulling block (17) for inserting into the mold cavity structure (9) is installed on the right end of the left core-pulling slider (16).

3. The die-casting mold for a reducer housing according to claim 1, characterized in that: The lower mold (2) has two exhaust block assemblies (13) installed side by side at the front.

4. A die-casting mold for a reducer housing according to claim 3, characterized in that: The front side of the mold cavity structure (9) is provided with several slag bag structures (12) surrounding the mold cavity structure (9), and the slag bag structures (12) and the vent block assembly (13) are connected by several shallow venting grooves.

5. A die-casting mold for a reducer housing according to claim 1, characterized in that: The inclined core-pulling structure (3) includes an inclined core-pulling bracket (18), an inclined core-pulling cylinder (19), and an inclined core-pulling slider (20). The inclined core-pulling bracket (18) is installed on the front side of the lower mold (2). The inclined core-pulling cylinder (19) is installed on the inclined core-pulling bracket (18). The inclined core-pulling slider (20) is installed on the main shaft of the inclined core-pulling cylinder (19). The inclined core-pulling slider (20) is inserted into the mold cavity structure (9).

6. A die-casting mold for a reducer housing according to claim 1, characterized in that: The right core-pulling structure (5) includes a right core-pulling bracket (21), a right core-pulling cylinder (22), a right core-pulling guide plate (23), a right core-pulling slider (24), and a right core (25). The right core-pulling bracket (21) is installed on the right side of the lower mold (2). Two right core-pulling guide plates (23) are embedded side by side at the right edge of the lower mold (2). The right core-pulling slider (24) is installed between the right core-pulling guide plates (23). The right core-pulling bracket (21) is equipped with a main shaft and a right core-pulling cylinder (22) that is connected to one end of the right core-pulling slider (24). The other end of the right core-pulling slider (24) is equipped with a right core (25).

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