Servo shell three-plate mold with quick material handle removing structure

Abstract

The utility model relates to a servo shell three-plate mould with a material handle quick removal structure, which comprises an upper mould plate, an upper mould base, a lower mould base and a mould foot structure, the upper mould base and the lower mould base are vertically stacked and combined, an upper mould core and a lower mould core which are vertically stacked are arranged between the upper mould base and the lower mould base, and the upper mould core and the lower mould core are connected with the mould foot structure. An upper mold plate is installed on the upper end face of the upper mold base, a mold foot structure is installed on the lower end face of the lower mold base, a mold cavity structure is formed between the upper mold core and the lower mold core, and a sprue structure is installed on the front portion of the upper mold plate in an embedded mode. Two runner plates which are stacked up and down are mounted on the rear side of the lower end of the sprue structure in an embedded manner, a runner is arranged between the two runner plates, a material handle removing structure is mounted on the right side of the upper die base, and the left end of the material handle removing structure inclines forwards. The mold has the characteristics of convenience in mold opening and part taking, improvement of production efficiency, saving of the internal space of the mold, simplification of the mold structure and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, in particular to a three-plate mold for a servo housing with a structure for quickly removing a sprue. Background Art

[0002] When producing a conventional servo housing, it is usually necessary to consider the heat dissipation rib structure on the outer surface of the servo housing. In order to facilitate the formation of the heat dissipation ribs, a core-pulling structure is usually selected to ensure the integrity of the structure. However, since the core-pulling structure occupies the space on the mold base, usually, the gate structure and the sprue bushing structure are usually arranged on the core-pulling structure. This method will increase the runner structure, causing the runner structure to adhere to the mold core structure. When the mold is opened to remove the part, the time consumed is relatively long, which is likely to affect the overall production efficiency. To solve the above problems, it is very necessary to design a three-plate mold. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a three-plate mold for a servo housing with a structure for quickly removing a sprue, which has the characteristics of convenient mold opening for part removal, improved production efficiency, saving of the internal space of the mold, and simplification of the mold structure.

[0004] In this device, the runner for injecting the mold cavity of the mold is set into two sections. One section is arranged between the upper template and the upper mold base, and the other section is arranged in the middle plate sprue bushing insert and the middle plate insert. When the mold is opened, first, the upper template and the upper mold base are opened, and then the sprue removal structure is started to cut off the sprue between the upper template and the upper mold base and the sprue head in the middle plate sprue bushing insert and the middle plate insert, so that the two sprues are disconnected. Then, the sprue can be quickly removed. The sprue head will remain on the product as the upper mold base and the lower mold base are opened. When the product is removed, the sprue head can be removed by other equipment. This method can greatly improve the part removal efficiency and the product production efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is to provide a three-plate mold for a servo housing with a quick material handle removal structure, including an upper template, an upper mold base, a lower mold base and a mold foot structure. The upper mold base and the lower mold base are stacked and combined vertically. An upper mold core and a lower mold core are installed between the upper mold base and the lower mold base in a stacked manner. An upper template is installed on the upper end face of the upper mold base, and a mold foot structure is installed on the lower end face of the lower mold base. A mold cavity structure is formed between the upper mold core and the lower mold core. A gate structure is embedded and installed at the front part of the upper template. Two runner plates are embedded and installed at the rear side of the lower end of the gate structure in a stacked manner. A runner is arranged between the two runner plates. A material handle removal structure is installed on the right side of the upper mold base. The left end of the material handle removal structure inclines forward. The material handle removal structure includes a removal structure mold frame, a removal structure pushing oil cylinder, a limit pressing block, a docking slider and a material handle scraping block. The removal structure mold frame is installed on the right side of the upper mold base. The removal structure pushing oil cylinder with its left end inclining forward is installed on the removal structure mold frame. Two limit pressing blocks are installed side by side on the upper side of the upper mold base. A docking slider is installed between the limit pressing blocks. One end of the docking slider is docked with the main shaft of the removal structure pushing oil cylinder, and a material handle scraping block is installed at the other end of the docking slider.

[0006] In this technical solution, by setting two runner plates to set the extended runner, the runner can connect the gate structure and the middle part of the mold cavity structure, simplify the layout of the runner, and at the same time speed up the product molding. At the same time, a material handle removal structure is set to facilitate the quick removal of the material handle.

[0007] During operation, first open the upper template to separate the two runner plates. At the same time, since the lower runner plate is embedded and installed on the upper mold base, the material handle can be exposed on the upper mold base. Then start the removal structure pushing oil cylinder. The main shaft of the removal structure pushing oil cylinder extends to push the docking slider. The docking slider pushes the material handle scraping block, and the material handle scraping block pushes the material handle, so that the material handle is cut off, which greatly facilitates the removal of the product.

[0008] As a supplement to this technical solution, a middle plate diverter cone insert is embedded and installed in the middle of the upper mold core. A middle plate insert embedded in the upper mold base is installed on the upper side of the middle plate diverter cone insert. A tapered hole structure with a smaller upper part and a larger lower part is set in the middle plate diverter cone insert and the middle plate insert.

[0009] In this technical solution, by setting the middle plate diverter cone insert and the middle plate insert, it is convenient for the molten metal to enter the mold cavity structure. At the same time, by setting the tapered hole structure with a smaller upper part and a larger lower part, it is convenient for demolding. Under the action of the upper mold base, the middle plate diverter cone insert and the middle plate insert move upward, so that the middle plate diverter cone insert and the middle plate insert are separated from the material head in the tapered hole structure, and the material head can stay on the product, which is convenient for the quick removal of the product.

[0010] As a supplement to this technical solution, a support pad is provided at the lower edge of the middle plate shunt cone insert, and two feeding ports are symmetrically arranged at the lower end of the middle plate shunt cone insert.

[0011] By providing the support pad, the butt joint thickness between the sprue and the product is reduced, facilitating the quick cutting of the sprue and the product. At the same time, by providing two feeding ports, it is convenient for the molten metal to fill into the cavity structure.

[0012] As a supplement to this technical solution, four guide pillar structures are provided between the upper die base and the lower die base. A thimble panel that moves up and down is installed inside the die foot structure, and several thimble rods inserted into the cavity structure are installed on the thimble panel. By providing the thimble panel, it is convenient to eject the product.

[0013] As a supplement to this technical solution, a left core-pulling assembly with its right end tilted forward and inserted into the cavity structure is installed on the left side of the lower die base. The left core-pulling assembly includes a left die carrier, an inclined guide pillar, a left core-pulling block, a connecting shaft, and a spring assembly. The left die carrier is in a concave shape and is inclined and installed on the left side of the lower die base. The two ends of the left die carrier extend towards the cavity structure and are fixed on the lower die base. A left core-pulling block is slidably installed between the extended ends of the left die carrier. An inclined guide pillar with its upper end tilted towards the cavity structure is installed on the left core-pulling block. A connecting shaft passing through the middle of the left die carrier is installed on the left core-pulling block near one side of the middle of the left die carrier. A spring assembly is sleeved on the end of the connecting shaft passing through the middle of the left die carrier. When the mold is closed, the spring assembly is in a compressed state. When the mold is opened, affected by the spring assembly and the inclined guide pillar, the left core-pulling block and the product are demolded.

[0014] As a supplement to this technical solution, exhaust assemblies are installed on both sides of the left core-pulling assembly.

[0015] As a supplement to this technical solution, a hole core-pulling with its front end tilted towards the cavity structure is installed at the left part of the rear side of the upper die base. The hole core-pulling includes a hole core-pulling die carrier, a hole core-pulling oil cylinder, and a hole core-pulling rod. The hole core-pulling die carrier is installed on the upper die base. A hole core-pulling oil cylinder with its main shaft facing the cavity structure is installed on the hole core-pulling die carrier. A hole core-pulling rod inserted into the cavity structure is installed on the main shaft of the hole core-pulling oil cylinder.

[0016] As a supplement to this technical solution, a rear core-pulling structure with its front end inclined towards the mold cavity structure is installed at the right rear part of the lower mold base. The rear core-pulling structure includes a rear core-pulling mold base, a rear core-pulling oil cylinder, and a rear core-pulling slider. The rear core-pulling slider is embedded and installed on the lower mold base and is located at the rear side of the mold cavity structure. Guide blocks are installed on both sides of the rear core-pulling slider. The rear core-pulling mold base is installed at the rear side of the lower mold base, and a rear core-pulling oil cylinder with its main shaft docked with the rear core-pulling slider is installed on the rear core-pulling mold base.

[0017] As a supplement to this technical solution, a right core-pulling structure with its right end inclined forward and inserted into the mold cavity structure is installed on the right side of the lower mold base. The right core-pulling structure includes a right core-pulling mold base, a right core-pulling oil cylinder, and a right core-pulling slider. The right core-pulling slider is slidably installed on the lower mold base. The right core-pulling mold base is installed on the right side of the lower mold base, and a right core-pulling oil cylinder with its main shaft docked with the right core-pulling slider is installed on the right core-pulling mold base.

[0018] As a supplement to this technical solution, a front core-pulling structure with its rear end inclined leftward and inserted into the mold cavity structure is installed on the front side of the lower mold base. The front core-pulling structure includes a front core-pulling mold base, a front core-pulling oil cylinder, and a front core-pulling slider. The front core-pulling mold base is inclined and installed on the front side of the lower mold base. A front core-pulling oil cylinder with its main shaft facing the mold cavity structure is installed on the front core-pulling mold base. A front core-pulling slider docked with the main shaft of the front core-pulling oil cylinder is slidably installed at the front part of the front end face of the lower mold base.

[0019] As a supplement to this technical solution, a number of support feet are installed on the front sides of the upper mold base and the lower mold base.

[0020] Beneficial effects: The utility model relates to a three-plate mold for a servo housing with a quick sprue removal structure. By providing two runner plates to set the extended runner, the runner can connect the gate structure and the middle part of the mold cavity structure, simplifying the layout of the runner and accelerating the product molding. At the same time, a sprue removal structure is provided to facilitate the quick removal of the sprue. It has the characteristics of convenient mold opening and part taking, improved production efficiency, saved internal space of the mold, and streamlined mold structure. Description of the Drawings

[0021] Figure 1 is the front view of the utility model;

[0022] Figure 2 is the top view of the utility model;

[0023] Figure 3 is the top view of the utility model after removing the upper template;

[0024] Figure 4 is the utility model Figure 3 sectional view in the A-A direction;

[0025] Figure 5 is the top view of the present utility model after removing the upper die holder and the upper die core; Figure 3

[0026] Figure 6 is the structural view of the support cushion block of the present utility model.

[0027] Illustration: 1. upper template, 2. upper die holder, 3. lower die holder, 4. die foot structure, 5. ejector plate, 6. gate structure, 7. support pad, 8. rear core-pulling structure, 9. sprue removal structure, 10. front core-pulling structure, 11. left core-pulling assembly, 12. hole core-pulling, 13. right core-pulling structure, 14. runner plate, 15. sprue, 16. guide pillar structure, 17. removal structure die set, 18. sprue scraping block, 19. limit pressure block, 20. docking slider, 21. removal structure pushing oil cylinder, 22. upper die core, 23. lower die core, 24. middle plate insert, 25. middle plate diverter cone insert, 26. exhaust assembly, 27. left die set, 28. spring assembly, 29. inclined guide pillar, 30. connecting shaft, 31. left core-pulling block, 32. hole core-pulling die set, 33. hole core-pulling oil cylinder, 34. hole core-pulling rod, 35. rear core-pulling oil cylinder, 36. rear core-pulling die set, 37. rear core-pulling slider, 38. right core-pulling slider, 39. right core-pulling die set, 40. right core-pulling oil cylinder, 41. front core-pulling die set, 42. front core-pulling oil cylinder, 43. front core-pulling slider, 44. support cushion block, 45. feed inlet. Specific Embodiments

[0028] The following further elaborates the present utility model 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.

[0029] The embodiment of the present utility model relates to a three-plate mold for a servo housing with a sprue rapid removal structure, as Figure 1 ​As shown in FIGS. 1-6, it includes an upper template 1, an upper die base 2, a lower die base 3 and a die foot structure 4. The upper die base 2 and the lower die base 3 are stacked and combined vertically. An upper die core 22 and a lower die core 23 are installed between the upper die base 2 and the lower die base 3 in a stacked manner. The upper template 1 is installed on the upper end face of the upper die base 2, and the die foot structure 4 is installed on the lower end face of the lower die base 3. A die cavity structure is formed between the upper die core 22 and the lower die core 23. A gate structure 6 is embedded and installed at the front part of the upper template 1. Two runner plates 14 are embedded and installed at the rear side of the lower end of the gate structure 6 in a stacked manner. A runner is arranged between the two runner plates 14. A sprue removal structure 9 is installed on the right side of the upper die base 2. The left end of the sprue removal structure 9 is tilted forward. The sprue removal structure 9 includes a removal structure die carrier 17, a removal structure pushing oil cylinder 21, a limit pressing block 19, a docking slider 20 and a sprue scraping block 18. The removal structure die carrier 17 is installed on the right side of the upper die base 2. The removal structure pushing oil cylinder 21 with its left end tilted forward is installed on the removal structure die carrier 17. Two limit pressing blocks 19 are installed side by side on the upper side of the upper die base 2. The docking slider 20 is installed between the limit pressing blocks 19. One end of the docking slider 20 is docked with the main shaft of the removal structure pushing oil cylinder 21, and the sprue scraping block 18 is installed at the other end of the docking slider 20.

[0030] In this technical solution, by setting two runner plates 14 to set the extended runner, the runner can connect the gate structure 6 and the middle part of the die cavity structure, simplify the layout of the runner, and also speed up the product molding. At the same time, a sprue removal structure 9 is set to facilitate the quick removal of the sprue 15.

[0031] During operation, first open the upper template 1 to separate the two runner plates 14. At the same time, since the lower runner plate 14 is embedded and installed on the upper die base 2, the sprue 15 can be exposed on the upper die base 2. Then start the removal structure pushing oil cylinder 21. The main shaft of the removal structure pushing oil cylinder 21 extends to push the docking slider 20. The docking slider 20 pushes the sprue scraping block 18. The sprue scraping block 18 pushes the sprue 15, so that the sprue 15 is cut off, which greatly facilitates the removal of the product.

[0032] As a supplement to this technical solution, a middle plate split cone insert 25 is embedded and installed in the middle of the upper die core 22. A middle plate insert 24 embedded in the upper die base 2 is installed on the upper side of the middle plate split cone insert 25. A tapered hole structure with a smaller upper part and a larger lower part is arranged in the middle plate split cone insert 25 and the middle plate insert 24.

[0033] In this technical solution, the middle plate shunt cone insert 25 and the middle plate insert 24 are provided to facilitate the entry of molten metal into the cavity structure. At the same time, a tapered hole structure with a smaller upper part and a larger lower part is provided to facilitate demolding. Under the action of the upper mold base 2, the middle plate shunt cone insert 25 and the middle plate insert 24 move upward, causing the middle plate shunt cone insert 25 and the middle plate insert 24 to separate from the sprue in the tapered hole structure, enabling the sprue to remain on the product and facilitating the rapid removal of the product.

[0034] As a supplement to this technical solution, a support pad 44 is provided at the lower edge of the middle plate shunt cone insert 25, and two feeding ports 45 are symmetrically arranged at the lower end of the middle plate shunt cone insert 25.

[0035] By providing the support pad 44, the butt joint thickness between the sprue and the product is reduced, facilitating the rapid cutting of the sprue and the product. At the same time, by providing two feeding ports 45, it is convenient for the molten metal to fill into the cavity structure.

[0036] As a supplement to this technical solution, four guide post structures 16 are provided between the upper mold base 2 and the lower mold base 3. A thimble panel 5 that moves up and down is installed in the mold leg structure 4, and a number of thimble rods inserted into the cavity structure are installed on the thimble panel 5. By providing the thimble panel 5, it is convenient to eject the product.

[0037] As a supplement to this technical solution, a left core-pulling assembly 11 with its right end tilted forward and inserted into the cavity structure is installed on the left side of the lower mold base 3. The left core-pulling assembly 11 includes a left mold frame 27, an inclined guide post 29, a left core-pulling block 31, a connecting shaft 30, and a spring assembly 28. The left mold frame 27 is concave-shaped and is inclined and installed on the left side of the lower mold base 3. The two ends of the left mold frame 27 extend towards the cavity structure and are fixed on the lower mold base 3. A left core-pulling block 31 is slidably installed between the extended ends of the left mold frame 27. An inclined guide post 29 with its upper end tilted towards the cavity structure is installed on the left core-pulling block 31. A connecting shaft 30 passing through the middle of the left mold frame 27 is installed on the left core-pulling block 31 near one side of the middle of the left mold frame 27. A spring assembly 28 is sleeved on one end of the connecting shaft 30 passing through the middle of the left mold frame 27. When the mold is closed, the spring assembly 28 is in a compressed state. When the mold is opened, affected by the spring assembly 28 and the inclined guide post 29, the left core-pulling block 31 and the product are demolded.

[0038] As a supplement to this technical solution, exhaust assemblies 26 are installed on both sides of the left core-pulling assembly 11.

[0039] As a supplement to this technical solution, a hole core-pulling member 12 with its front end inclined towards the cavity structure is installed at the left part of the rear side of the upper die base 2. The hole core-pulling member 12 includes a hole core-pulling die carrier 32, a hole core-pulling oil cylinder 33 and a hole core-pulling rod 34. The hole core-pulling die carrier 32 is installed on the upper die base 2. A hole core-pulling oil cylinder 33 with its main axis towards the cavity structure is installed on the hole core-pulling die carrier 32. A hole core-pulling rod 34 inserted into the cavity structure is installed on the main axis of the hole core-pulling oil cylinder 33.

[0040] As a supplement to this technical solution, a rear core-pulling structure 8 with its front end inclined towards the cavity structure is installed at the right part of the rear side of the lower die base 3. The rear core-pulling structure 8 includes a rear core-pulling die carrier 36, a rear core-pulling oil cylinder 35 and a rear core-pulling slider 37. The rear core-pulling slider 37 is embedded and installed on the lower die base 3 and is located at the rear side of the cavity structure. Guide blocks are installed on both sides of the rear core-pulling slider 37. The rear core-pulling die carrier 36 is installed at the rear side of the lower die base 3. A rear core-pulling oil cylinder 35 with its main axis docked with the rear core-pulling slider 37 is installed on the rear core-pulling die carrier 36.

[0041] As a supplement to this technical solution, a right core-pulling structure 13 with its right end inclined forward and inserted into the cavity structure is installed on the right side of the lower die base 3. The right core-pulling structure 13 includes a right core-pulling die carrier 39, a right core-pulling oil cylinder 40 and a right core-pulling slider 38. The right core-pulling slider 38 is slidably installed on the lower die base 3. The right core-pulling die carrier 39 is installed on the right side of the lower die base 3. A right core-pulling oil cylinder 40 with its main axis docked with the right core-pulling slider 38 is installed on the right core-pulling die carrier 39.

[0042] As a supplement to this technical solution, a front core-pulling structure 10 with its rear end inclined to the left and inserted into the cavity structure is installed at the front side of the lower die base 3. The front core-pulling structure 10 includes a front core-pulling die carrier 41, a front core-pulling oil cylinder 42 and a front core-pulling slider 43. The front core-pulling die carrier 41 is inclined and installed at the front side of the lower die base 3. A front core-pulling oil cylinder 42 with its main axis towards the cavity structure is installed on the front core-pulling die carrier 41. A front core-pulling slider 43 docked with the main axis of the front core-pulling oil cylinder 42 is slidably installed at the front part of the front end face of the lower die base 3.

[0043] As a supplement to this technical solution, a number of support feet 7 are installed at the front side of the upper die base 2 and the lower die base 3.

[0044] The above has introduced in detail a three-plate mold for a servo housing with a quick material handle removal structure. 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 three-plate mold for a servo housing with a quick handle removal structure, comprising an upper mold plate (1), an upper mold base (2), a lower mold base (3) and a mold foot structure (4), wherein the upper mold base (2) and the lower mold base (3) are stacked up and down, and an upper mold core (22) and a lower mold core (23) are stacked up and down between the upper mold base (2) and the lower mold base (3), the upper mold plate (1) is installed on the upper end surface of the upper mold base (2), and the mold foot structure (4) is installed on the lower end surface of the lower mold base (3), and a mold cavity structure is formed between the upper mold core (22) and the lower mold core (23), characterized in that: A gate structure (6) is embedded and installed at the front of the upper mold plate (1), and two runner plates (14) are embedded and installed on the rear side of the lower end of the gate structure (6) and are arranged in an upper and lower stack, and a runner is arranged between the two runner plates (14). A material handle removal structure (9) is installed on the right side of the upper mold base (2), and the left end of the material handle removal structure (9) is inclined forward. The material handle removal structure (9) includes a removal structure mold frame (17), a removal structure pushing cylinder (21), a limit pressure block (19), a docking slider (20) and a material handle shovel. A removal block (18) is installed on the right side of the upper die seat (2), and a removal structure mold frame (17) is installed on the removal structure mold frame (17) with a removal structure pushing cylinder (21) with its left end tilted forward. Two limiting pressure blocks (19) are installed side by side on the upper side of the upper die seat (2), and a docking slider (20) is installed between the limiting pressure blocks (19). One end of the docking slider (20) is docked with the main shaft of the removal structure pushing cylinder (21), and the other end of the docking slider (20) is installed with a material handle scraping block (18).

2. A three-plate mold for a servo housing with a quick handle removal structure according to claim 1, characterized in that: A middle plate diverter cone insert (25) is embedded in the middle of the upper mold core (22), and a middle plate insert (24) embedded in the upper mold base (2) is installed on the upper side of the middle plate diverter cone insert (25). A tapered hole structure with a small top and a large bottom is provided in the middle plate diverter cone insert (25) and the middle plate insert (24).

3. A three-plate mold for a servo housing with a quick handle removal structure according to claim 2, characterized in that: A support pad (44) is arranged at the lower edge of the middle plate flow dividing cone insert (25), and two feed ports (45) are symmetrically arranged at the lower end of the middle plate flow dividing cone insert (25).

4. A three-plate mold for a servo housing with a quick handle removal structure according to claim 1, characterized in that: Four guide column structures (16) are arranged between the upper die base (2) and the lower die base (3); an ejector panel (5) that moves up and down is installed in the die foot structure (4); and a plurality of ejector rods inserted into the die cavity structure are installed on the ejector panel (5).

5. The three-plate mold for a servo housing with a quick handle removal structure according to claim 1, characterized in that: A left core pulling assembly (11) is installed on the left side of the lower die base (3), the right end of which is tilted forward and inserted into the mold cavity structure. The left core pulling assembly (11) includes a left mold frame (27), an inclined guide column (29), a left core pulling block (31), a connecting shaft (30) and a spring assembly (28). The left mold frame (27) is concave in shape and is tiltedly installed on the left side of the lower die base (3). Both ends of the left mold frame (27) extend toward the mold cavity structure and are fixed on the lower die base (3). A left core pulling block (31) is slidably installed between the extended ends of the left mold frame (27). The left core pulling block (31) is provided with an inclined guide column (29) whose upper end is inclined toward the mold cavity structure. A connecting shaft (30) passing through the middle of the left mold frame (27) is provided on the side of the left core pulling block (31) close to the middle of the left mold frame (27). A spring assembly (28) is sleeved on one end of the connecting shaft (30) passing through the middle of the left mold frame (27). When the mold is closed, the spring assembly (28) is in a compressed state. When the mold is opened, the left core pulling block (31) and the product are demoulded under the influence of the spring assembly (28) and the inclined guide column (29).

6. A three-plate mold for a servo housing with a quick handle removal structure according to claim 5, characterized in that: Exhaust assemblies (26) are installed on both sides of the left core pulling assembly (11).

7. A three-plate mold for a servo housing with a quick handle removal structure according to claim 1, characterized in that: A hole core pulling device (12) with its front end inclined toward the mold cavity structure is installed on the left rear side of the upper mold base (2). The hole core pulling device (12) includes a hole core pulling mold frame (32), a hole core pulling cylinder (33) and a hole core pulling rod (34). The hole core pulling mold frame (32) is installed on the upper mold base (2). The hole core pulling mold frame (32) is equipped with a hole core pulling cylinder (33) with its main shaft facing the mold cavity structure. The main shaft of the hole core pulling cylinder (33) is equipped with a hole core pulling rod (34) inserted into the mold cavity structure.

8. The three-plate mold for a servo housing with a quick handle removal structure according to claim 1, characterized in that: A rear core pulling structure (8) with its front end inclined toward the mold cavity structure is installed on the right rear side of the lower mold base (3). The rear core pulling structure (8) includes a rear core pulling mold frame (36), a rear core pulling cylinder (35) and a rear core pulling slider (37). The rear core pulling slider (37) is embedded and installed on the lower mold base (3) and is located on the rear side of the mold cavity structure. Guide blocks are installed on both sides of the rear core pulling slider (37). The rear core pulling mold frame (36) is installed on the rear side of the lower mold base (3). The rear core pulling cylinder (35) that connects the main shaft and the rear core pulling slider (37) is installed on the rear core pulling mold frame (36).

9. The three-plate mold for a servo housing with a quick handle removal structure according to claim 1, characterized in that: A right core pulling structure (13) is installed on the right side of the lower mold base (3), the right end of which is tilted forward and inserted into the mold cavity structure. The right core pulling structure (13) includes a right core pulling mold frame (39), a right core pulling cylinder (40) and a right core pulling slider (38). The right core pulling slider (38) is slidably installed on the lower mold base (3), the right core pulling mold frame (39) is installed on the right side of the lower mold base (3), and the right core pulling cylinder (40) that connects the main shaft and the right core pulling slider (38) is installed on the right core pulling mold frame (39).

10. The three-plate mold for a servo housing with a quick handle removal structure according to claim 1, characterized in that: The front side of the lower die base (3) is provided with a front core pulling structure (10) with its rear end tilted to the left and inserted into the mold cavity structure. The front core pulling structure (10) comprises a front core pulling mold frame (41), a front core pulling oil cylinder (42) and a front core pulling slider (43). The front core pulling mold frame (41) is tiltedly installed on the front side of the lower die base (3). The front core pulling mold frame (41) is provided with a front core pulling oil cylinder (42) with its main shaft facing the mold cavity structure. The front front end of the lower die base (3) is slidably provided with a front core pulling slider (43) docking with the main shaft of the front core pulling oil cylinder (42).

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