Die-casting die for steering gear sleeve

Abstract

The die-casting die for the steering gear sleeve comprises an upper die body, a lower die body and die feet, the upper die body and the lower die body are arranged in an up-down stacked mode, an upper die core and a lower die core are installed between the upper die body and the lower die body, and a die cavity structure is formed between the upper die core and the lower die core. An inclined core-pulling structure with one end inclining towards the mold cavity structure is installed on the left front portion of the lower mold, a left core-pulling structure and a right core-pulling structure are installed on the left portion and the right portion between the upper mold and the lower mold respectively, and an inner hole plug pin is arranged at the end, close to the mold cavity structure, of the left core-pulling structure. A right core-pulling sliding block is arranged at the end, close to the mold cavity structure, of the right core-pulling structure, an inner hole pulling core abutting against the inner hole plug pin is installed on the right core-pulling sliding block, a vacuumizing assembly embedded into the lower mold is installed on the rear side of the right core-pulling structure, and a communicating runner is arranged on the lower side of the right core-pulling sliding block. One end of the communicating runner is communicated with the mold cavity structure, and the other end of the communicating runner is communicated with an inlet of the vacuumizing assembly. The mold has the characteristics of improving the product quality, facilitating the inner hole forming of the product, facilitating the demolding of the product, reducing the overall cost of the mold 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 a steering gear sleeve. Background Art

[0002] When a strip-shaped steering gear structure is produced by a die-casting mold, problems such as local defects often occur due to the excessive length of the mold cavity. In order to ensure that the molten metal can completely fill the mold cavity, a vacuum pumping structure needs to be added for vacuum pumping operations. Usually, the vacuum pumping structure is directly connected to the mold cavity structure, and the flow channel length between the two is short. Due to excessive pumping force, the molten metal will roll, affecting the filling of the mold cavity and causing a large number of gas shrinkage holes in the product. To solve this problem, it is necessary to increase the flow channel length between the vacuum pumping structure and the mold cavity structure. However, an overly long flow channel length will increase the volume of the mold and the cost of the mold. To solve this problem, the mold needs to be modified. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a die-casting mold for a steering gear sleeve, which has the characteristics of improving product quality, facilitating the forming of the inner hole of the product, facilitating the demolding of the product, and reducing the overall cost of the mold.

[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide a die-casting mold for a steering gear sleeve, 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. A mold cavity structure is formed between the upper mold core and the lower mold core. An inclined core-pulling structure with one end inclined towards the mold cavity structure is installed at the left front part of the lower mold. Left and right core-pulling structures are respectively installed at the left and right parts between the upper mold and the lower mold. An inner hole plug is arranged at one end of the left core-pulling structure close to the mold cavity structure. A right core-pulling slider is arranged at one end of the right core-pulling structure close to the mold cavity structure. An inner hole core-pulling member that abuts against the inner hole plug is installed on the right core-pulling slider. A vacuum pumping assembly embedded in the lower mold is installed at the rear side of the right core-pulling structure. A connecting flow channel is arranged at the lower side of the right core-pulling slider. One end of the connecting flow channel is communicated with the mold cavity structure, and the other end is communicated with the inlet of the vacuum pumping assembly.

[0005] In this technical solution, an inner hole pin and an inner hole core puller are provided to facilitate the forming of the inner hole of the steering gear sleeve. At the same time, an inclined core pulling structure is provided to ensure the forming of the side hole positions of the steering gear sleeve, ensuring the integrity of the product. At the same time, a vacuum pumping component is installed to facilitate the pumping of air in the die cavity structure, creating a negative pressure inside, facilitating the filling of the entire die cavity structure with molten metal. By providing a connecting runner on the lower side of the right core pulling slider, the overall length of the connecting runner is increased to facilitate the control of the flow rate of the molten metal, avoiding the tumbling of the molten metal caused by too fast a flow rate and ensuring the quality of the product. At the same time, the overall volume of the mold is reduced, reducing the mold cost.

[0006] As a supplement to this technical solution, a left rear core puller and a right rear core puller are installed side by side at the rear side of the lower die. A lower forming core puller is provided at one end of the left rear core puller close to the die cavity structure, and an auxiliary forming core puller is provided at one end of the right rear core puller. The lower forming core puller and the auxiliary forming core puller are embedded and installed in the upper end face of the lower die, and the upper end faces of the lower forming core puller and the auxiliary forming core puller are flush with the upper end face of the lower die.

[0007] In this technical solution, the lower forming core puller and the auxiliary forming core puller are provided to facilitate the forming of the product. At the same time, the upper end faces of the lower forming core puller and the auxiliary forming core puller are flush with the upper end face of the lower die, facilitating the installation of the left rear core puller and the right rear core puller.

[0008] As a supplement to this technical solution, four docking die handles are installed on the upper end face of the upper die and the lower end face of the die feet. The docking die handles are all provided at the four corners of the upper end face of the upper die or the four corners of the lower end face of the die feet, and a card slot structure is provided on the outer circle of the docking die handle.

[0009] In this technical solution, the docking die handle is provided to facilitate the docking of the mold and the die casting machine, and the card slot structure is provided to facilitate the pulling of the mold.

[0010] As a supplement to this technical solution, a flow dividing cone is provided in the middle of the upper end face of the lower die core of the lower die. A bifurcated runner is provided between the flow dividing cone and the die cavity structure. The flow dividing cone is provided to distribute the inflow of molten metal.

[0011] As a supplement to this technical solution, guide post structures inclined towards the middle of the upper die are installed at the four corners of the lower end face of the upper die, and positioning foot structures corresponding to the guide post structures one by one are embedded and installed at the four corners of the upper end face of the lower die. The guide post structures and the positioning foot structures are provided to facilitate the quick docking of the upper die and the lower die and ensure the normal opening and closing of the upper die and the lower die.

[0012] As a supplement to this technical solution, the positioning foot structure includes a docking body, a rectangular card slot, and a hole. A rectangular card slot arranged obliquely is provided in the middle of the docking body, and a hole is provided in the middle of the rectangular card slot. The guide post structure includes a guide post base, a clamping limit block, and a guide post. A clamping limit block matching the rectangular card slot is installed on the lower end surface of the guide post base, and a guide post with its lower end extending out of the clamping limit block is installed in the clamping limit block. By providing the rectangular card slot and the clamping limit block, the quick clamping and positioning of the upper die and the lower die are facilitated.

[0013] As a supplement to this technical solution, an exhaust block assembly is embedded and installed at the rear side of the left core-pulling structure, and the exhaust block assembly is used to facilitate the discharge of internal air.

[0014] Beneficial effects: The utility model relates to a die-casting mold for a steering gear sleeve. By providing an inner hole pin and an inner hole core-pulling, the inner hole of the steering gear sleeve can be formed conveniently. At the same time, by providing an inclined core-pulling structure, the side hole positions of the steering gear sleeve can be formed to ensure the integrity of the product. At the same time, by installing a vacuum pumping component, the air in the die cavity structure can be pumped conveniently, so that a negative pressure is formed inside, which is convenient for the molten metal to fill the entire die cavity structure. By providing a connecting runner under the right core-pulling slider, the overall length of the connecting runner is increased, which is convenient for controlling the flow rate of the molten metal, avoiding the rolling of the molten metal caused by too fast flow rate, ensuring the quality of the product, and at the same time reducing the overall volume of the mold and the mold cost; it has the characteristics of improving the product quality, facilitating the formation of the inner hole of the product, facilitating the demolding of the product, and reducing the overall cost of the mold. BRIEF 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 die and the upper die core;

[0018] Figure 4 is the bottom view of the upper die and the upper die core of the utility model;

[0019] Figure 5 is the structural view of the positioning foot structure of the utility model;

[0020] Figure 6 is the structural view of the guide post structure of the utility model.

[0021] Illustration: 1. Upper die, 2. Lower die, 3. Die foot, 4. Docking die handle, 5. Card slot structure, 6. Right core-pulling structure, 7. Left core-pulling structure, 8. Oblique core-pulling structure, 9. Left rear core-pulling, 10. Right rear core-pulling, 11. Runner distributor, 12. Inner hole pin, 13. Right core-pulling slider, 14. Hole-forming convex rod, 15. Lower part forming core-pulling, 16. Auxiliary forming core-pulling, 17. Mold cavity structure, 18. Vacuum pumping assembly, 19. Exhaust block assembly, 20. Inner hole core-pulling, 21. Guide pillar structure, 22. Positioning foot structure, 23. Connecting runner, 24. Docking body, 25. Hole position, 26. Rectangular card slot, 27. Guide pillar base, 28. Clamping limit block, 29. Guide pillar. Detailed implementation mode

[0022] The following further elaborates on the present utility model in combination 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.

[0023] The implementation mode of the present utility model relates to a die-casting mold for a steering gear sleeve, as Figure 1 shown in FIG. 4, which includes an upper die 1, a lower die 2 and a die foot 3. The upper die 1 and the lower die 2 are arranged in an up-and-down stacked manner, and an upper die core and a lower die core are installed between them. A mold cavity structure 17 is formed between the upper die core and the lower die core. An oblique core-pulling structure 8 with one end inclined towards the mold cavity structure 17 is installed at the left front part of the lower die 2. A left core-pulling structure 7 and a right core-pulling structure 6 are respectively installed at the left and right parts between the upper die 1 and the lower die 2. An inner hole pin 12 is arranged at one end of the left core-pulling structure 7 close to the mold cavity structure 17. A right core-pulling slider 13 is arranged at one end of the right core-pulling structure 6 close to the mold cavity structure 17. An inner hole core-pulling 20 that abuts against the inner hole pin 12 is installed on the right core-pulling slider 13. A vacuum pumping assembly 18 embedded in the lower die 2 is installed at the rear side of the right core-pulling structure 6. A connecting runner 23 is arranged at the lower side of the right core-pulling slider 13. One end of the connecting runner 23 is communicated with the mold cavity structure 17, and the other end is communicated with the inlet of the vacuum pumping assembly 18.

[0024] In this technical solution, an inner hole pin 12 and an inner hole core-pulling mechanism 20 are provided to facilitate the forming of the inner hole of the steering gear sleeve. At the same time, an inclined core-pulling structure 8 is provided to ensure the forming of the side hole positions of the steering gear sleeve, ensuring the integrity of the product. At the same time, a vacuum pumping assembly 18 is installed to facilitate the pumping of air in the die cavity structure 17, creating a negative pressure inside to facilitate the filling of the entire die cavity structure 17 with molten metal. By providing a connecting flow channel 23 on the lower side of the right core-pulling slider 13, the overall length of the connecting flow channel 23 is increased to facilitate the control of the flow rate of the molten metal, avoiding the tumbling of the molten metal caused by too fast a flow rate and ensuring the quality of the product. At the same time, the overall volume of the mold is reduced, reducing the mold cost.

[0025] As a supplement to this technical solution, a left rear core-pulling mechanism 9 and a right rear core-pulling mechanism 10 are installed side by side at the rear side of the lower die 2. A lower forming core-pulling mechanism 15 is provided at one end of the left rear core-pulling mechanism 9 close to the die cavity structure 17, and an auxiliary forming core-pulling mechanism 16 is provided at one end of the right rear core-pulling mechanism 10. The lower forming core-pulling mechanism 15 and the auxiliary forming core-pulling mechanism 16 are embedded in the upper end face of the lower die 2, and the upper end faces of the lower forming core-pulling mechanism 15 and the auxiliary forming core-pulling mechanism 16 are flush with the upper end face of the lower die 2.

[0026] In this technical solution, the lower forming core-pulling mechanism 15 and the auxiliary forming core-pulling mechanism 16 are provided to facilitate the forming of the product. At the same time, the upper end faces of the lower forming core-pulling mechanism 15 and the auxiliary forming core-pulling mechanism 16 are flush with the upper end face of the lower die 2, facilitating the installation of the left rear core-pulling mechanism 9 and the right rear core-pulling mechanism 10.

[0027] As a supplement to this technical solution, four docking die handles 4 are installed on the upper end face of the upper die 1 and the lower end face of the die feet 3. The docking die handles 4 are respectively arranged at the four corners of the upper end face of the upper die 1 or the four corners of the lower end face of the die feet 3. A groove structure 5 is provided on the outer ring of the docking die handle 4.

[0028] In this technical solution, the docking die handle 4 is provided to facilitate the docking of the mold and the die-casting machine, and the groove structure 5 is provided to facilitate the pulling of the mold.

[0029] As a supplement to this technical solution, a flow dividing cone 11 is provided in the middle of the upper end face of the lower die core of the lower die 2. A bifurcated flow channel is provided between the flow dividing cone 11 and the die cavity structure 17. The flow dividing cone 11 is provided to distribute the inflow of molten metal.

[0030] As a supplement to this technical solution, guide post structures 21 inclined towards the middle of the upper die 1 are installed at the four corners of the lower end face of the upper die 1. Positioning foot structures 22 corresponding to the guide post structures 21 one by one are embedded at the four corners of the upper end face of the lower die 2. The guide post structures 21 and the positioning foot structures 22 are provided to facilitate the quick docking of the upper die 1 and the lower die 2 and ensure the normal opening and closing of the upper die 1 and the lower die 2.

[0031] As shown Figure 5 and Figure 6 As a supplement to this technical solution, the positioning foot structure 22 includes a docking body 24, a rectangular card slot 26, and a hole 25. A rectangular card slot 26 arranged obliquely is provided in the middle of the docking body 24, and a hole 25 is provided in the middle of the rectangular card slot 26. The guide post structure 21 includes a guide post base 27, a clamping limit block 28, and a guide post 29. A clamping limit block 28 matching the rectangular card slot 26 is installed on the lower end surface of the guide post base 27, and a guide post 29 with its lower end extending out of the clamping limit block 28 is installed in the clamping limit block 28. By providing the rectangular card slot 26 and the clamping limit block 28, the quick clamping and positioning of the upper die 1 and the lower die 2 are facilitated.

[0032] As a supplement to this technical solution, an exhaust block assembly 19 is embedded and installed at the rear side of the left core-pulling structure 7, and the exhaust block assembly 19 is used to facilitate the discharge of internal air.

[0033] A hole-forming convex rod 14 is provided at one end of the inclined core-pulling structure 8 inserted into the cavity structure 17.

[0034] The above has introduced in detail a die-casting mold for a steering gear sleeve 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 a steering gear sleeve, 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 stacked up and down, an upper mold core and a lower mold core are installed between the upper mold core and the lower mold core, and a mold cavity structure (17) is formed between the upper mold core and the lower mold core, characterized in that: The left front portion of the lower mold (2) is provided with an inclined core pulling structure (8) with one end inclined toward the mold cavity structure (17); the left and right portions between the upper mold (1) and the lower mold (2) are respectively provided with a left core pulling structure (7) and a right core pulling structure (6); the left core pulling structure (7) is provided with an inner hole plug (12) at one end close to the mold cavity structure (17); the right core pulling structure (6) is provided with a right core pulling slider (13) at one end close to the mold cavity structure (17); the right core pulling slider (13) is provided with an inner hole core pulling (20) which is opposite to the inner hole plug (12); the right core pulling structure (6) is provided with a vacuum pumping assembly (18) embedded in the lower mold (2) at the rear side; the right core pulling slider (13) is provided with a connecting flow channel (23); one end of the connecting flow channel (23) is connected to the mold cavity structure (17), and the other end is connected to the inlet of the vacuum pumping assembly (18).

2. A die-casting mold for a steering gear sleeve according to claim 1, characterized in that: A left rear core pull (9) and a right rear core pull (10) are installed side by side on the rear side of the lower mold (2); a lower molding core pull (15) is provided at one end of the left rear core pull (9) close to the mold cavity structure (17); an auxiliary molding core pull (16) is provided at one end of the right rear core pull (10); the lower molding core pull (15) and the auxiliary molding core pull (16) are embedded in the upper end surface of the lower mold (2); and the upper end surfaces of the lower molding core pull (15) and the auxiliary molding core pull (16) are flush with the upper end surface of the lower mold (2).

3. A die-casting mold for a steering gear sleeve according to claim 1, characterized in that: Four docking die handles (4) are installed on the upper end surface of the upper die (1) and the lower end surface of the die foot (3). The docking die handles (4) are arranged at the four corners of the upper end surface of the upper die (1) or the four corners of the lower end surface of the die foot (3). A slot structure (5) is arranged on the outer ring of the docking die handle (4).

4. A die-casting mold for a steering gear sleeve according to claim 1, characterized in that: A diverter cone (11) is provided in the middle of the upper end surface of the lower mold core of the lower mold (2), and a bifurcated flow channel is provided between the diverter cone (11) and the mold cavity structure (17).

5. The die-casting mold for a steering gear sleeve according to claim 1, characterized in that: The four corners of the lower end surface of the upper mold (1) are all equipped with guide column structures (21) inclined toward the middle of the upper mold (1), and the four corners of the upper end surface of the lower mold (2) are embedded with positioning foot structures (22) corresponding to the guide column structures (21).

6. A die-casting mold for a steering gear sleeve according to claim 5, characterized in that: The positioning foot structure (22) comprises a docking body (24), a rectangular slot (26) and a hole (25); the middle part of the docking body (24) is provided with a rectangular slot (26) arranged in an inclined manner; the middle part of the rectangular slot (26) is provided with a hole (25); the guide column structure (21) comprises a guide column base (27), a clamping limit block (28) and a guide column (29); a clamping limit block (28) matching the rectangular slot (26) is installed on the lower end surface of the guide column base (27); and a guide column (29) whose lower end extends out of the clamping limit block (28) is installed in the clamping limit block (28).

7. The die-casting mold for a steering gear sleeve according to claim 1, characterized in that: An exhaust block assembly (19) is embedded and installed on the rear side of the left core-pulling structure (7).

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