Multi-cavity die-casting die

Abstract

The utility model provides a multi-cavity die-casting mold which comprises a demolding assembly, and the demolding assembly comprises an upper mold base, an upper mold cavity, a top groove, a top frame, a top rod, a top plate, a pouring gate, a pouring gate cylinder, a sliding hole, an upper shell and a spring. A plurality of upper die cavities are formed in the lower surface of the upper die base. The upper die base and the lower die base are correspondingly provided with a plurality of upper die cavities and lower die cavities, so that a plurality of die castings can be produced at the same time in the one-time die-casting process, meanwhile, in the ascending process of the upper die base, the elastic force of the spring automatically pushes the ejector plate downwards to drive the ejector frame to eject the die castings out of the upper die cavities, and in addition, the die-casting efficiency is greatly improved. The push rod and the pushing plate are driven by the electric cylinder, a die casting is rapidly ejected out of the lower die cavity, manual operation is reduced, the production automation degree and the production efficiency are improved, the inner walls of the upper die cavity and the lower die cavity are cleaned while the die casting is pushed out through the top frame and the pushing plate, the cleaning speed of the upper die cavity and the lower die cavity is increased, and the production efficiency is improved. And the production efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, and particularly relates to a multi-cavity die-casting mold. Background Art

[0002] A die-casting mold is the core tool for casting metal parts. It determines the shape, dimensional accuracy and internal quality of the castings. Molten metal is injected into the mold cavity by a die-casting machine under specific temperature conditions, and pressure forging is carried out during the cooling process to eliminate defects and optimize the tissue performance. With the progress of technology, the manufacturing technology of die-casting molds has been continuously improved, becoming an indispensable and continuously innovative key link in the die-casting process;

[0003] Traditional die-casting molds usually adopt a single-cavity design, that is, only one product can be produced each time of die-casting, which greatly limits the production efficiency. At the same time, during the demoulding process, manual or robotic arm intervention is usually required, and the operation is cumbersome and inefficient. In addition, during the long-term use of the mold, debris is likely to accumulate on the inner wall of the cavity, affecting the product quality and the mold life, and cleaning these debris also requires additional time and manpower, thus reducing the production efficiency. Therefore, a multi-cavity die-casting mold is proposed. Summary of the Utility Model

[0004] In view of this, the utility model hopes to provide a multi-cavity die-casting mold to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0005] The technical solution of the embodiment of the utility model is realized as follows: A multi-cavity die-casting mold includes a demoulding assembly, and the demoulding assembly includes an upper mold base, an upper mold cavity, a top groove, a top frame, a top rod, a top plate, a gate, a runner barrel, a sliding hole, an upper shell and a spring;

[0006] A plurality of upper mold cavities are opened on the lower surface of the upper mold base. A top groove is opened on the outer side of the inner top wall of the upper mold cavity. A top frame is slidably connected to the inner side wall of the top groove. The outer side wall of the top frame is slidably connected to the inner side wall of the upper mold cavity. Four corners of the upper surface of the top frame are fixedly connected with top rods respectively. The top of the top rod is fixedly connected with a top plate. Gates are opened at the centers of the inner top walls of the plurality of upper mold cavities respectively. A runner barrel is fixedly connected to the outer side of the upper surface of the upper mold base close to the gate. A sliding hole is opened on the outer side of the lower surface of the top plate close to the gate. The lower part of the outer side wall of the runner barrel is slidably connected to the inner side wall of the sliding hole. The top of the outer side wall of the runner barrel is fixedly connected with an upper shell. The lower part of the inner side wall of the upper shell is fixedly connected to the outer side wall of the upper mold base. The outer side wall of the top plate is slidably connected to the upper part of the inner side wall of the upper shell close to the upper mold base. A spring is sleeved on the upper part of the outer side wall of the runner barrel. The top of the spring is in fit connection with the inner top wall of the upper shell close to the outer side of the runner barrel. The bottom of the spring is in fit connection with the upper surface of the top plate close to the outer side of the sliding hole.

[0007] Further preferably, synchronous cylinders are fixedly connected to the middle parts of both sides of the upper shell. Output ends of the two synchronous cylinders are fixedly connected with push-pull blocks. A lower shell is fixedly connected to the side of the two push-pull blocks close to each other. A lower die assembly is fixedly connected to the inner side wall of the lower shell.

[0008] Further preferably, the lower die assembly includes a lower die base, a lower die cavity, a top push plate, a push rod, a support plate, a mounting hole and an electric cylinder;

[0009] The upper part of the inner side wall of the lower shell is fixedly connected with a lower die base. A plurality of lower die cavities are formed in the upper surface of the lower die base. The inner side wall of the lower die cavity is slidably connected with a top push plate. The center of the lower surface of the top push plate is fixedly connected with a push rod. The bottom of the push rod penetrates through the center of the inner bottom wall of the lower die cavity. The bottom of the push rod is fixedly connected with a support plate. The outer side wall of the support plate is slidably connected with the lower part of the inner side wall of the lower shell. A mounting hole is formed in the center of the lower surface of the lower shell. The inner side wall of the mounting hole is fixedly connected with an electric cylinder. The output end of the electric cylinder is fixedly connected with the center of the lower surface of the support plate.

[0010] Further preferably, positioning columns are fixedly connected to the four corners of the lower surface of the top plate. Limiting holes are formed in the four corners of the upper surface of the upper die base. The upper part of the outer side wall of the positioning column is slidably connected with the inner side wall of the limiting hole.

[0011] Further preferably, positioning holes are formed in the four corners of the upper surface of the lower die base. The outer side wall of the bottom of the positioning column is slidably connected with the inner side wall of the positioning hole.

[0012] Further preferably, the bottom of the inner side wall of the upper shell is slidably connected with the top of the outer side wall of the lower die base.

[0013] Further preferably, the lower surface of the upper die base is attached to the upper surface of the lower die base.

[0014] Further preferably, a support platform is fixedly connected to the middle part of the outer side wall of the lower shell. Support legs are fixedly connected to the four corners of the lower surface of the support platform.

[0015] Due to the adoption of the above technical solutions in the embodiments of the present utility model, the following advantages are achieved:

[0016] In the present utility model, a plurality of upper die cavities and lower die cavities are respectively arranged on the upper die base and the lower die base, so that multiple die castings can be produced simultaneously during one die casting process. At the same time, during the upward movement of the upper die base, the elastic force of the spring automatically pushes the top plate downward, driving the top frame to eject the die casting from the upper die cavity. Moreover, by driving the push rod and the push plate through an electric cylinder, the die casting can be quickly ejected from the lower die cavity, reducing manual operation, improving the degree of production automation and production efficiency. While the top frame and the push plate eject the die casting, they clean the inner walls of the upper die cavity and the lower die cavity, improving the cleaning speed of the upper die cavity and the lower die cavity and further enhancing the production efficiency.

[0017] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present utility model will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a structural diagram of one perspective of the present utility model;

[0020] Figure 2 is a structural diagram of another perspective of the present utility model;

[0021] Figure 3 is an overall sectional view of the present utility model;

[0022] Figure 4 is a structural diagram of the upper die base and the top plate of the present utility model;

[0023] Figure 5 is of the present utility model Figure 4 of another perspective structural diagram.

[0024] Reference numerals: 1, demolding assembly; 3, lower mold assembly; 11, upper mold base; 12, upper mold cavity; 13, ejection groove; 14, ejection frame; 15, ejector rod; 16, top plate; 17, gate; 18, runner barrel; 19, sliding hole; 20, upper shell; 21, spring; 22, synchronous cylinder; 23, push-pull block; 24, lower shell; 25, positioning post; 26, limiting hole; 27, positioning hole; 28, support platform; 29, support leg; 31, lower mold base; 32, lower mold cavity; 33, ejector plate; 34, push rod; 35, support plate; 36, mounting hole; 37, electric cylinder. Detailed implementation manners

[0025] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0026] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0027] As Figures 1 - 5 shown, the embodiment of the present invention provides a multi-cavity die-casting mold, which includes a demolding assembly 1. The demolding assembly 1 includes an upper mold base 11, an upper mold cavity 12, an ejection groove 13, an ejection frame 14, an ejector rod 15, a top plate 16, a gate 17, a runner barrel 18, a sliding hole 19, an upper shell 20 and a spring 21;

[0028] The lower surface of the upper die base 11 is provided with a plurality of upper die cavities 12. The outer side of the inner top wall of the upper die cavity 12 is provided with a top groove 13. The inner side wall of the top groove 13 is slidably connected with a top frame 14. The outer side wall of the top frame 14 is slidably connected to the inner side wall of the upper die cavity 12. Four corners of the upper surface of the top frame 14 are fixedly connected with top rods 15. The top of the top rod 15 is fixedly connected with a top plate 16. The center of the inner top wall of each of the plurality of upper die cavities 12 is provided with a pouring gate 17. The outer side of the upper surface of the upper die base 11 near the pouring gate 17 is fixedly connected with a runner cylinder 18. A sliding hole 19 is provided on the lower surface of the top plate 16 near the outer side of the pouring gate 17. The lower part of the outer side wall of the runner cylinder 18 is slidably connected to the inner side wall of the sliding hole 19. The top of the outer side wall of the runner cylinder 18 is fixedly connected with an upper shell 20. The lower part of the inner side wall of the upper shell 20 is fixedly connected to the outer side wall of the upper die base 11. The outer side wall of the top plate 16 is slidably connected to the inner side wall of the upper shell 20 near the upper part of the upper die base 11. The upper part of the outer side wall of the runner cylinder 18 is sleeved with a spring 21. The top of the spring 21 is in close contact with the inner top wall of the upper shell 20 near the outer side of the runner cylinder 18. The bottom of the spring 21 is in close contact with the upper surface of the top plate 16 near the outer side of the sliding hole 19. During demolding, while the upper die base 11 moves upward, the spring 21 pushes the top plate 16 downward, thereby driving the top rod 15 to push the top frame 14 out of the top groove 13, and then ejecting the product from the upper die cavity 12. At the same time, the top frame 14 scrapes off the debris on the inner wall of the upper die cavity 12.

[0029] In one embodiment, specifically: Synchronous cylinders 22 are fixedly connected to the middle parts of both sides of the upper shell 20. The output ends of the two synchronous cylinders 22 are fixedly connected with push-pull blocks 23. The closer sides of the two push-pull blocks 23 are fixedly connected with a lower shell 24. The inner side wall of the lower shell 24 is fixedly connected with a lower die assembly 3. The synchronous cylinders 22 ensure that the upper shell 20 and the lower shell 24 can open and close synchronously and stably, thereby increasing the stability of mold opening and mold closing.

[0030] In one embodiment, specifically: The lower die assembly 3 includes a lower die base 31, a lower die cavity 32, a top push plate 33, a push rod 34, a support plate 35, a mounting hole 36, and an electric cylinder 37;

[0031] The upper part of the inner side wall of the lower shell 24 is fixedly connected with a lower die base 31. A plurality of lower die cavities 32 are formed on the upper surface of the lower die base 31. A pushing plate 33 is slidably connected to the inner side wall of the lower die cavity 32. A push rod 34 is fixedly connected to the center of the lower surface of the pushing plate 33. The bottom of the push rod 34 penetrates through the center of the inner bottom wall of the lower die cavity 32. The bottom of the push rod 34 is fixedly connected with a support plate 35. The outer side wall of the support plate 35 is slidably connected to the lower part of the inner side wall of the lower shell 24. An installation hole 36 is formed at the center of the lower surface of the lower shell 24. An electric cylinder 37 is fixedly connected to the inner side wall of the installation hole 36. The output end of the electric cylinder 37 is fixedly connected to the center of the lower surface of the support plate 35. By pushing the support plate 35 upward through the electric cylinder 37, the push rod 34 is driven to push the pushing plate 33 to slide inside the lower die cavity 32, thereby facilitating the ejection of the die-casting part and cleaning the inner wall of the lower die cavity 32 at the same time.

[0032] In one embodiment, specifically: positioning columns 25 are fixedly connected to the four corners of the lower surface of the top plate 16. Limit holes 26 are formed at the four corners of the upper surface of the upper die base 11. The upper part of the outer side wall of the positioning column 25 is slidably connected to the inner side wall of the limit hole 26. By sliding the limit hole 26 on the upper die base 11 along the positioning column 25, the stability of the movement of the upper die base 11 is increased.

[0033] In one embodiment, specifically: positioning holes 27 are formed at the four corners of the upper surface of the lower die base 31. The bottom of the outer side wall of the positioning column 25 is slidably connected to the inner side wall of the positioning hole 27. By inserting the positioning column 25 into the positioning hole 27, the positioning column 25 is limited.

[0034] In one embodiment, specifically: the bottom of the inner side wall of the upper shell 20 is slidably connected to the top of the outer side wall of the lower die base 31. By inserting the top of the outer side wall of the lower die base 31 into the bottom of the inner side wall of the upper shell 20, the lower die base 31 is limited.

[0035] In one embodiment, specifically: the lower surface of the upper die base 11 is in close contact with the upper surface of the lower die base 31. By closely fitting the upper die base 11 and the lower die base 31, the mold clamping is completed.

[0036] In one embodiment, specifically: a support platform 28 is fixedly connected to the middle of the outer side wall of the lower shell 24. Support legs 29 are fixedly connected to the four corners of the lower surface of the support platform 28. By supporting the entire die-casting mold through the support platform 28 and the support legs 29, the stability of the die-casting mold during the die-casting process is increased.

[0037] When the utility model works: during mold closing, the synchronous cylinder 22 is started, and the lower shell 24 and the upper shell 20 are driven to move towards each other through the push-pull block 23 until the upper mold base 11 and the lower mold base 31 are completely attached, realizing mold closing. During the mold closing process, the bottom of the positioning column 25 is inserted into the positioning hole 27 to ensure the alignment accuracy of the upper mold base 11 and the lower mold base 31. After the bottom of the positioning column 25 and the inner bottom wall of the positioning hole 27 are attached, the positioning column 25 and the top plate 16 at the top are limited, and the downward movement stops. At this time, the upper shell 20 drives the upper mold base 11 to continue to move downward, so that the limiting hole 26 on the upper mold base 11 slides downward along the positioning column 25, so that the bottom of the top plate 16 slides into the internal top groove 13 of the upper mold cavity 12 through the top frame 14 connected by the ejector rod 15. At the same time, the top plate 16 compresses the spring 21. After the upper mold base 11 and the lower mold base 31 are completely attached, the top frame 14 completely slides into the internal top groove 13 of the upper mold cavity 12, and the electric cylinder 37 is kept in a contracted state. The support plate 35, the push rod 34 and the push plate 33 are located at the lowest position in the lower mold base 31. Then, molten metal liquid is injected into each upper mold cavity 12 through the runner cylinder 18, and the metal liquid cools and solidifies in the upper mold cavity 12 and the lower mold cavity 32 to form a die casting. During mold opening, the synchronous cylinder 22 is started to control the separation of the upper shell 20 and the lower shell 24, so that the upper mold base 11 and the lower mold base 31 are separated. During the separation process, the spring 21 starts to reset and work, pushing the top plate 16 to move downward, and then driving the ejector rod 15 and the top frame 14 to slide out of the top groove 13. While the top frame 14 slides out, the debris on the inner wall of the upper mold cavity 12 is scraped off, and the die casting is ejected from the upper mold cavity 12. After mold opening, the electric cylinder 37 is started to push the support plate 35, the push rod 34 and the push plate 33 to move upward, and the die casting is ejected from the lower mold cavity 32, so as to facilitate the removal of the die casting. At the same time, the push plate 33 scrapes off and ejects the debris on the inner wall of the lower mold cavity 32, so as to facilitate cleaning.

[0038] The above is only the specific implementation manner of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A multi-cavity die-casting mold, characterized in that: The demoulding assembly (1) comprises an upper mold base (11), an upper mold cavity (12), a top groove (13), a top frame (14), a top rod (15), a top plate (16), a gate (17), a runner tube (18), a sliding hole (19), an upper shell (20) and a spring (21); A plurality of upper mold cavities (12) are provided on the lower surface of the upper mold base (11), a top groove (13) is provided on the outer side of the inner top wall of the upper mold cavity (12), the inner side wall of the top groove (13) is slidably connected to a top frame (14), the outer side wall of the top frame (14) is slidably connected to the inner side wall of the upper mold cavity (12), the four corners of the upper surface of the top frame (14) are fixedly connected to a push rod (15), the top of the push rod (15) is fixedly connected to a top plate (16), a gate (17) is provided at the center of the inner top wall of the plurality of upper mold cavities (12), the upper surface of the upper mold base (11) is fixedly connected to a runner barrel (18) near the outer side of the gate (17), the lower surface of the top plate (16) is fixedly connected to the outer side of the gate (17), and the outer side of the top plate (16) is fixedly connected to the inner side wall of the upper mold cavity (12). A sliding hole (19) is opened on the side, the lower part of the outer wall of the runner tube (18) is slidably connected to the inner wall of the sliding hole (19), the top of the outer wall of the runner tube (18) is fixedly connected to the upper shell (20), the lower part of the inner wall of the upper shell (20) is fixedly connected to the outer wall of the upper mold base (11), the outer wall of the top plate (16) is slidably connected to the inner wall of the upper shell (20) close to the upper part of the upper mold base (11), the upper part of the outer wall of the runner tube (18) is sleeved with a spring (21), the top of the spring (21) is fitted and connected to the inner top wall of the upper shell (20) close to the outer side of the runner tube (18), and the bottom of the spring (21) is fitted and connected to the upper surface of the top plate (16) close to the outer side of the sliding hole (19).

2. A multi-cavity die-casting mold according to claim 1, characterized in that: The middle parts of both sides of the upper shell (20) are fixedly connected to synchronous cylinders (22), the output ends of the two synchronous cylinders (22) are fixedly connected to push-pull blocks (23), the adjacent sides of the two push-pull blocks (23) are fixedly connected to the lower shell (24), and the inner side wall of the lower shell (24) is fixedly connected to the lower mold assembly (3).

3. A multi-cavity die-casting mold according to claim 2, characterized in that: The lower die assembly (3) comprises a lower die base (31), a lower die cavity (32), a push plate (33), a push rod (34), a support plate (35), a mounting hole (36) and an electric cylinder (37); A lower die base (31) is fixedly connected to the upper portion of the inner wall of the lower shell (24); a plurality of lower die cavities (32) are provided on the upper surface of the lower die base (31); a push plate (33) is slidably connected to the inner wall of the lower die cavity (32); a push rod (34) is fixedly connected to the center of the lower surface of the push plate (33); the bottom of the push rod (34) passes through the center of the inner bottom wall of the lower die cavity (32); a support plate (35) is fixedly connected to the bottom of the push rod (34); the outer wall of the support plate (35) is slidably connected to the lower portion of the inner wall of the lower shell (24); a mounting hole (36) is provided at the center of the lower surface of the lower shell (24); an electric cylinder (37) is fixedly connected to the inner wall of the mounting hole (36); an output end of the electric cylinder (37) is fixedly connected to the center of the lower surface of the support plate (35).

4. A multi-cavity die-casting mold according to claim 3, characterized in that: The four corners of the lower surface of the top plate (16) are fixedly connected with positioning columns (25), the four corners of the upper surface of the upper mold base (11) are provided with limiting holes (26), and the outer upper wall of the positioning column (25) is slidably connected to the inner wall of the limiting hole (26).

5. The multi-cavity die-casting mold according to claim 4, characterized in that: The upper surface of the lower die seat (31) is provided with positioning holes (27) at four corners, and the bottom of the outer wall of the positioning column (25) is slidably connected to the inner wall of the positioning hole (27).

6. The multi-cavity die-casting mold according to claim 3, characterized in that: The bottom of the inner side wall of the upper shell (20) is slidably connected to the top of the outer side wall of the lower mold base (31).

7. The multi-cavity die-casting mold according to claim 3, characterized in that: The lower surface of the upper die base (11) is closely connected to the upper surface of the lower die base (31).

8. The multi-cavity die-casting mold according to claim 2, characterized in that: A support platform (28) is fixedly connected to the middle portion of the outer side wall of the lower shell (24), and support legs (29) are fixedly connected to the four corners of the lower surface of the support platform (28).

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