Die head inner core supporting and reinforcing structure for precision casting

Abstract

The utility model relates to the technical field of precision casting, and discloses a die head inner core supporting and reinforcing structure for precision casting, which comprises a lower die, the top of the lower die is slidably connected with an upper die, the top of the lower die is fixedly connected with a guide post, the upper die is slidably connected to the outer side of the guide post, and the guide post is fixedly connected with the lower die. A supporting sleeve is fixedly connected to the bottom of the upper die, a die core is arranged on the inner side of the supporting sleeve, a reinforcing assembly is installed in the supporting sleeve, a die cavity is formed in the upper die, a connecting plate is fixedly connected to the side face of the upper die, and a fixing assembly is installed in the connecting plate. According to the wax mold, the first spring exerts pressure on the baffle, the positioning pin is inserted into the positioning groove of the mold core, accurate matching and locking between the mold core and the upper mold are achieved, the stability of the mold core and the upper mold is enhanced, axial or radial deviation of the mold core in the wax injection or demolding process is effectively prevented, and the installation stability of the mold core and the forming precision of the wax mold are improved.

Description

Technical Field

[0001] This utility model relates to the field of precision casting technology, and in particular to a core support and reinforcement structure for a precision casting die. Background Technology

[0002] Precision casting is a high-precision casting process that produces high-quality surfaces and is often used to manufacture parts with complex shapes and strict dimensional requirements. The process involves creating an investment mold, coating it with refractory material to form a shell, then sintering the shell at high temperatures, pouring the metal into the mold, and finally removing the shell to obtain the casting. It is widely used in aerospace, automotive, and machinery industries, offering advantages such as high material utilization and minimal or no machining required.

[0003] Precision casting molds are key components used in the manufacture of wax models, directly affecting the dimensional accuracy and surface quality of the castings. Their main structure includes the mold cavity, mold core, and guiding mechanism. The mold cavity and mold core determine the shape and internal structure of the wax model, the guiding mechanism ensures precise mold opening and closing, and the temperature control system helps improve molding efficiency. The molds are generally made of high-strength alloy steel, which has good thermal conductivity and wear resistance, and is widely used in high-end manufacturing fields such as aerospace and automobiles.

[0004] Existing precision casting mold heads have precise structures that can ensure accurate wax pattern dimensions and smooth surfaces. However, during wax injection or demolding, the mold core is prone to displacement, which affects the dimensional stability of the wax pattern and reduces its service life. To address this issue, a core support reinforcement structure for precision casting mold heads is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a core support reinforcement structure for precision casting molds, aiming to improve the problem in the prior art where the mold core is prone to displacement during wax injection or demolding, affecting the dimensional stability of the wax mold and reducing its service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A core support and reinforcement structure for a precision casting die head includes a lower die, an upper die slidably connected to the top of the lower die, a guide post fixedly connected to the top of the lower die, the upper die slidably connected to the outside of the guide post, a support sleeve fixedly connected to the bottom of the upper die, a die core disposed on the inner side of the support sleeve, a reinforcing component installed inside the support sleeve, a die cavity disposed inside the upper die, a connecting plate fixedly connected to the side of the upper die, and a fixing component installed inside the connecting plate; the reinforcing component includes a fixing shell, the fixing shell being fixedly connected to the inside of the support sleeve, a positioning pin slidably connected inside the fixing shell, a baffle fixedly connected to the outside of the positioning pin, and a spring sleeved on the outer periphery of the positioning pin, the spring being disposed between the fixing shell and the baffle;

[0008] As a further description of the above technical solution:

[0009] The outer side of the mold core has a positioning groove, and the positioning pin engages with the positioning groove.

[0010] As a further description of the above technical solution:

[0011] The fixing component includes a slide rod, which is slidably connected inside the connecting plate. One end of the slide rod is fixedly connected to a locking block, and the other end of the slide rod is rotatably connected to a rotating trigger. A protective plate is fixedly connected to the side of the connecting plate, and the slide rod is slidably connected inside the protective plate.

[0012] As a further description of the above technical solution:

[0013] A second spring is sleeved on the outer periphery of the slide rod, and the second spring is disposed between the locking block and the protective plate;

[0014] As a further description of the above technical solution:

[0015] The lower mold has a slot on its side, and the locking block engages with the slot.

[0016] As a further description of the above technical solution:

[0017] The rotary trigger has a limiting groove inside, and the slide rod is rotatably connected inside the limiting groove.

[0018] As a further description of the above technical solution:

[0019] A support plate is fixedly connected to the outside of the mold core, and a support groove is opened inside the support sleeve. The support plate is slidably connected inside the support groove.

[0020] As a further description of the above technical solution:

[0021] The lower mold has an internal slot, and the fixing shell and the positioning pin are disposed inside the slot.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, a spring applies pressure to a pair of baffles, causing the baffles to automatically insert the positioning pin into the positioning groove of the mold core, thereby achieving precise alignment and locking between the mold core and the upper mold. This structure utilizes an automatic reset elastic element to complete the pin insertion action, ensuring that the mold core does not undergo axial or radial displacement during wax injection and demolding, thus significantly enhancing the installation stability of the mold core and the molding accuracy of the wax mold.

[0024] 2. In this utility model, pulling the rotating trigger drives the slide bar to move inward, and with the help of the second spring, the locking block is pushed into the lower mold slot simultaneously, realizing the rapid locking of the upper and lower molds. This structure effectively simplifies the fixing action steps, improves clamping efficiency, and enhances the positioning reliability and operation convenience during the mold head assembly process. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a core support reinforcement structure for a precision casting mold head proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the support sleeve for a precision casting die head inner core support reinforcement structure proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the fixed shell of the inner core support reinforcement structure for a precision casting mold head proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the connecting plate of the core support reinforcement structure for a precision casting mold head proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the slide rod of the inner core support reinforcement structure for precision casting mold head proposed in this utility model.

[0030] Legend:

[0031] 1. Lower mold; 2. Upper mold; 3. Support sleeve; 4. Mold core; 5. Connecting plate; 6. Fixed shell; 7. Positioning pin; 8. Baffle; 9. Spring 1; 10. Positioning groove; 11. Support plate; 12. Support groove; 13. Slide rod; 14. Locking block; 15. Rotating trigger; 16. Protective plate; 17. Spring 2; 18. Locking groove; 19. Limiting groove; 20. Empty groove; 21. Mold cavity; 22. Guide post. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-4 This utility model provides an embodiment of a core support and reinforcement structure for a precision casting mold head, comprising a lower mold 1, an upper mold 2 slidably connected to the top of the lower mold 1, a guide post 22 fixedly connected to the top of the lower mold 1, the upper mold 2 slidably connected to the outside of the guide post 22, a support sleeve 3 fixedly connected to the bottom of the upper mold 2, a mold core 4 provided on the inner side of the support sleeve 3, a reinforcement component installed inside the support sleeve 3, a mold cavity 21 provided inside the upper mold 2, a connecting plate 5 fixedly connected to the side of the upper mold 2, and a fixing component installed inside the connecting plate 5; the reinforcement component includes a fixing shell 6, which is fixedly connected inside the support sleeve 3 to protect its internal structure, a positioning pin 7 slidably connected inside the fixing shell 6, a baffle 8 fixedly connected to the outside of the positioning pin 7, and the positioning pin 7 moves synchronously when the baffle 8 moves, and a spring 9 is sleeved on the outer periphery of the positioning pin 7, which is located between the fixing shell 6 and the baffle 8, and the pressure generated by the spring 9 and the positioning pin 7 causes the positioning pin 7 to move inward. The outer side of the mold core 4 has a positioning groove 10. The positioning pin 7 is engaged with the positioning groove 10. The positioning pin 7 moves inward and is engaged inside the positioning groove 10, fixing the relative position of the upper mold 2 and the mold core 4 and strengthening the stability between them.

[0034] Reference Figure 1 , Figure 4 and Figure 5 The fixing assembly includes a slide rod 13, which is slidably connected inside the connecting plate 5. The slide rod 13 connects various structures. One end of the slide rod 13 is fixedly connected to a locking block 14, and the other end is rotatably connected to a rotating trigger 15. Rotating the rotating trigger 15 moves the locking block 14 via the slide rod 13. A protective plate 16 is fixedly connected to the side of the connecting plate 5, and the slide rod 13 is slidably connected inside the protective plate 16, protecting the internal structures of the connecting plate 5. A second spring 17 is sleeved on the outer periphery of the slide rod 13, positioned between the locking block 14 and the protective plate 16. The pressure generated by the interaction of the second spring 17 and the protective plate 16 causes the locking block 14 to move inward. A slot 18 is formed on the side of the lower mold 1, and the locking block 14 engages with the slot 18. The locking block 14 moves inward and engages inside the slot 18, fixing the upper mold 2 onto the lower mold 1.

[0035] Reference Figures 2-5The rotary trigger 15 has a limiting groove 19 inside, and the slide rod 13 is rotatably connected inside the limiting groove 19. By setting the limiting groove 19, the rotation position of the rotary trigger 15 is limited. A support plate 11 is fixedly connected to the outside of the mold core 4, and a support groove 12 is opened inside the support sleeve 3. The support plate 11 is slidably connected inside the support groove 12. Through the cooperation between the support plate 11 and the support groove 12, the rotation displacement of the mold core 4 is prevented. A hollow groove 20 is opened inside the lower mold 1. The fixed shell 6 and the positioning pin 7 are set inside the hollow groove 20. The hollow groove 20 provides space for the fixed shell 6 and the positioning pin 7 to enter the lower mold 1.

[0036] Working principle: Under the pressure applied by spring 9 to baffle 8, baffle 8 is forced to move inward with positioning pin 7, so that positioning pin 7 is inserted into positioning groove 10 of mold core 4, fixing the relative position between upper mold 2 and mold core 4, strengthening the stability between upper mold 2 and mold core 4, effectively preventing mold core 4 from shifting during wax injection or demolding, and improving the dimensional stability and service life of wax mold.

[0037] Pulling the rotary trigger 15 moves the slide bar 13 inward. With the pressure applied to the locking block 14 by the spring 17, the slide bar 13 and the locking block 14 move inward, locking the locking block 14 into the slot 18 of the lower mold 1. This quickly fixes the position between the lower mold 1 and the upper mold 2, improving the working efficiency of the mold head. Pulling the rotary trigger 15 in the opposite direction moves the slide bar 13 outward, pulling the locking block 14 out of the slot 18 of the lower mold 1, allowing the upper mold 2 to be quickly removed.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A core support and reinforcement structure for a precision casting die head, comprising a lower die (1), characterized in that: The upper mold (2) is slidably connected to the top of the lower mold (1), and a guide post (22) is fixedly connected to the top of the lower mold (1). The upper mold (2) is slidably connected to the outside of the guide post (22). A support sleeve (3) is fixedly connected to the bottom of the upper mold (2). A mold core (4) is provided on the inner side of the support sleeve (3). A reinforcing component is installed inside the support sleeve (3). A mold cavity (21) is provided inside the upper mold (2). A connecting plate (5) is fixedly connected to the side of the upper mold (2). A fixing component is installed inside the connecting plate (5). The reinforcing component includes a fixed shell (6), which is fixedly connected inside the support sleeve (3). A positioning pin (7) is slidably connected inside the fixed shell (6). A baffle (8) is fixedly connected to the outside of the positioning pin (7). A spring (9) is sleeved on the outer periphery of the positioning pin (7). The spring (9) is located between the fixed shell (6) and the baffle (8).

2. The core support and reinforcement structure for precision casting molds according to claim 1, characterized in that: The outer side of the mold core (4) has a positioning groove (10), and the positioning pin (7) is engaged with the positioning groove (10).

3. The core support reinforcement structure for precision casting molds according to claim 1, characterized in that: The fixing component includes a slide rod (13), which is slidably connected inside the connecting plate (5). One end of the slide rod (13) is fixedly connected to a locking block (14), and the other end of the slide rod (13) is rotatably connected to a rotating trigger (15). A protective plate (16) is fixedly connected to the side of the connecting plate (5), and the slide rod (13) is slidably connected inside the protective plate (16).

4. The core support reinforcement structure for precision casting molds according to claim 3, characterized in that: A second spring (17) is sleeved on the outer periphery of the slide bar (13), and the second spring (17) is disposed between the locking block (14) and the protective plate (16).

5. The core support reinforcement structure for precision casting molds according to claim 3, characterized in that: The lower mold (1) has a slot (18) on its side, and the card block (14) engages with the slot (18).

6. The core support reinforcement structure for precision casting molds according to claim 3, characterized in that: The rotating trigger (15) has a limiting groove (19) inside, and the slide rod (13) is rotatably connected inside the limiting groove (19).

7. The core support reinforcement structure for precision casting molds according to claim 1, characterized in that: A support plate (11) is fixedly connected to the outside of the mold core (4), and a support groove (12) is provided inside the support sleeve (3). The support plate (11) is slidably connected inside the support groove (12).

8. The core support reinforcement structure for precision casting molds according to claim 1, characterized in that: The lower mold (1) has a slot (20) inside, and the fixing shell (6) and the positioning pin (7) are disposed inside the slot (20).

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