Die-casting die capable of achieving uniform feeding

Abstract

The utility model provides a uniform feeding die-casting die which comprises a fixed die and a movable die connected to the top of the fixed die in a sliding mode, a fixed die forming plate is arranged at the top of the fixed die, a movable die forming plate is arranged at the end, close to the fixed die, of the movable die, and the fixed die forming plate and the movable die forming plate are connected in a sealed and inserted mode. A vacuumizing pipe is arranged on the fixed mold forming plate, a vacuum pump is arranged at one end of the vacuumizing pipe, a first sliding hole is formed in the fixed mold forming plate, and a telescopic assembly communicating with the vacuumizing pipe is slidably connected into the first sliding hole. The vacuum pump and the vacuumizing pipe are matched to vacuumize the gap between the movable mold forming plate and the fixed mold forming plate, and due to the fact that air is reduced, molten metal evenly enters the space between the movable mold forming plate and the fixed mold forming plate, air is effectively prevented from being formed in a casting, and the forming effect of the die casting is better.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting mold equipment, in particular to a die-casting mold with uniform feeding. Background Art

[0002] A die-casting mold is an essential tool in die-casting production. It plays a decisive role in the quality, precision, and production efficiency of die-cast parts. The die-casting process is to heat the required metal material to a molten state and maintain it within a suitable temperature range. The molten metal liquid is quickly injected into the mold cavity under high pressure, usually reaching hundreds or even thousands of kilograms of pressure, so that the metal liquid quickly fills the cavity and solidifies under pressure. After die-casting, the mold is opened, and the casting is discharged through a pushing mechanism. Uniform feeding is crucial for die-casting. The molten metal liquid can fill the mold cavity in a stable and consistent manner, avoiding defects such as local overheating, under-casting, and air holes. A reasonable design of the die-casting mold can make the metal liquid feed evenly. The existing die-casting mold has a simple structural design. When the metal liquid enters the forming cavity, the air inside the forming cavity is likely to remain, resulting in unsmooth air discharge and thus uneven feeding. Summary of the Utility Model

[0003] The problem to be solved by the utility model is the problem that air is likely to remain in the existing die-casting mold.

[0004] To solve the above technical problems, the utility model provides a die-casting mold with uniform feeding, which includes a fixed mold and a movable mold slidably connected to the top of the fixed mold. A fixed mold forming plate is arranged on the top of the fixed mold. A movable mold forming plate is arranged at one end of the movable mold close to the fixed mold. The fixed mold forming plate and the movable mold forming plate are hermetically inserted. A vacuum extraction pipe is arranged on the fixed mold forming plate. One end of the vacuum extraction pipe is provided with a vacuum pump. A first sliding hole is opened inside the fixed mold forming plate. A telescopic component communicated with the vacuum extraction pipe is slidably connected inside the first sliding hole. One end of the telescopic component penetrates to the outside of the fixed mold and is provided with a driving device.

[0005] Preferably, the telescopic component includes a telescopic rod, a plug, and an air inlet part. The output end of the driving device is installed with one end of the telescopic rod. The other end of the telescopic rod slidably penetrates through the first sliding hole. The end of the telescopic rod away from the driving device is installed with the plug. The plug is slidably and hermetically connected to the first sliding hole. Both ends of the air inlet part are respectively installed with the plug and the vacuum extraction pipe.

[0006] Preferably, a cavity is opened inside the air inlet part, and the air inlet part is provided with a plurality of vacuum extraction holes arranged at intervals in the circumferential direction.

[0007] Preferably, a gate is provided inside the fixed mold, and a runner is provided on the surface of the fixed mold, with both ends of the runner communicating with the gate and the fixed mold forming plate respectively. The number of runners is three, and the runners are symmetric about the middle of the gate.

[0008] Preferably, a baffle corresponding to the gate and the runner is provided on one side of the movable mold close to the fixed mold, and guide posts are respectively provided at its four corners. A guide sleeve for slidably inserting the guide posts is provided on one side of the fixed mold close to the movable mold.

[0009] Preferably, second sliding holes are symmetrically provided inside the fixed mold. One end of each second sliding hole penetrates through to the surface of the fixed mold forming plate, and a demolding rod is slidably inserted inside. A transmission device is provided at one end of the demolding rod away from the fixed mold forming plate.

[0010] Preferably, the first sliding hole is provided at the center of the fixed mold forming plate.

[0011] Preferably, the number of the second sliding holes is two and they are symmetric about the first sliding hole.

[0012] Preferably, the telescopic device is a cylinder or a hydraulic cylinder.

[0013] Preferably, the transmission device is a cylinder or a hydraulic cylinder.

[0014] Compared with the prior art, the present utility model provides a die-casting mold with uniform feeding, having the following

[0015] beneficial effects:

[0016] 1. By providing a vacuum extraction tube, a vacuum pump, and a first sliding hole, the vacuum pump and the vacuum extraction tube cooperate to evacuate the space between the movable mold forming plate and the fixed mold forming plate to a vacuum. Due to the reduction of air, the molten metal evenly enters the space between the movable mold forming plate and the fixed mold forming plate, effectively avoiding the formation of air in the casting, making the forming effect of the die-cast part better. By providing the first sliding hole, the telescopic assembly, and the driving device, the driving device drives the telescopic assembly to slide in the first sliding hole, driving the vacuum extraction tube to move to between the fixed mold forming plate and the movable mold forming plate, thereby effectively evacuating the space between the movable mold forming plate and the fixed mold forming plate to a vacuum. After the vacuum extraction is completed, the driving device drives the telescopic assembly, and then drives the vacuum extraction tube to move into the first sliding hole, making the structure design of the device more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the first schematic diagram of the main structure of the present utility model;

[0018] Figure 2 is the second schematic diagram of the main structure of the present utility model;

[0019] Figure 3 is a schematic structural view of the telescopic assembly of the present utility model;

[0020] Figure 4 is a sectional view of the fixed mold structure of the present utility model;

[0021] Figure 5 is Figure 1 an enlarged view of part A in

[0022] In the figure: 1, fixed mold; 2, movable mold; 3, fixed mold forming plate; 4, movable mold forming plate; 5, vacuum pumping pipe; 6, first sliding hole; 7, telescopic assembly; 71, telescopic rod; 72, plug; 73, air inlet part; 8, vacuum pumping hole; 9, gate; 10, runner; 11, baffle; 12, guide post; 13, guide sleeve; 14, second sliding hole; 15, demolding rod. Specific embodiments

[0023] The present utility model relates to a die-casting mold with uniform feeding. As Figures 1-4 shown, it includes a fixed mold 1 and a movable mold 2 slidably connected to the top of the fixed mold 1. A fixed mold forming plate 3 is arranged at the top of the fixed mold 1, and a movable mold forming plate 4 is arranged at one end of the movable mold 2 close to the fixed mold 1. The fixed mold forming plate 3 and the movable mold forming plate 4 are hermetically inserted. A vacuum pumping pipe 5 is arranged on the fixed mold forming plate 3, and a vacuum pump is arranged at one end of the vacuum pumping pipe 5. A first sliding hole 6 is opened inside the fixed mold forming plate 3, and a telescopic assembly 7 communicated with the vacuum pumping pipe 5 is slidably connected inside the first sliding hole 6. One end of the telescopic assembly 7 penetrates to the outside of the fixed mold 1 and is provided with a driving device. By arranging the fixed mold 1 and the movable mold 2, the fixed mold 1 is fixedly installed inside the die-casting equipment, and the movable mold 2 linearly drives perpendicular to the surface of the fixed mold 1, so that the fixed mold forming plate 3 and the movable mold forming plate 4 are hermetically inserted. By arranging the vacuum pumping pipe 5, the vacuum pump, and the first sliding hole 6, the vacuum pump and the vacuum pumping pipe 5 cooperate to pump the gap between the movable mold forming plate 4 and the fixed mold forming plate 3 into a vacuum. Due to the reduction of air, the molten metal evenly enters the gap between the movable mold forming plate 4 and the fixed mold forming plate 3, effectively avoiding the formation of air in the casting and making the forming effect of the die-casting part better. By arranging the first sliding hole 6, the telescopic assembly 7, and the driving device, the driving device drives the telescopic assembly 7 to slide in the first sliding hole 6, driving the vacuum pumping pipe 5 to move to the gap between the fixed mold forming plate 3 and the movable mold forming plate 4, thereby effectively pumping the gap between the movable mold forming plate 4 and the fixed mold forming plate 3 into a vacuum. After the vacuum pumping is completed, the driving device drives the telescopic assembly 7, and then drives the vacuum pumping pipe 5 to move into the first sliding hole 6.

[0024] In an embodiment of the present utility model, the telescopic assembly 7 includes a telescopic rod 71, a plug 72, and an air inlet portion 73. The output end of the driving device is installed at one end of the telescopic rod 71. The other end of the telescopic rod 71 slidably passes through the first sliding hole 6. The end of the telescopic rod 71 away from the driving device is installed with the plug 72. The plug 72 is slidably and sealingly connected to the first sliding hole 6. The two ends of the air inlet portion 73 are respectively installed with the plug 72 and the vacuum extraction pipe 5. By providing the telescopic rod 71, the plug 72, and the air inlet portion 73, the size of the plug 72 is the same as that of the first sliding hole 6. The telescopic rod 71 drives the plug 72 to slide in the first sliding hole 6. At the same time, the first sliding hole 6 is sealed by the plug 72. The vacuum extraction pipe 5 is communicated with the air inlet portion 73. The vacuum extraction pipe 5 is communicated with the gap between the moving die forming plate 4 and the fixed die forming plate 3 through the air inlet portion 73. When the air inlet portion 73 moves above the first sliding hole 6 to extract vacuum, the plug 72 seals the first sliding hole 6. After the vacuum extraction is completed, molten metal can be injected for casting.

[0025] In an embodiment of the present utility model, a cavity is provided inside the air inlet portion 73, and a plurality of vacuum extraction holes 8 are provided in the air inlet portion 73 at circumferential intervals. By providing the vacuum extraction holes 8 and the cavity, the vacuum extraction effect is more uniform and the vacuum extraction effect is better.

[0026] In an embodiment of the present utility model, a gate 9 is provided inside the fixed die 1, and a runner 10 is provided on the surface of the fixed die 1 with both ends respectively communicated with the gate 9 and the fixed die forming plate 3. The number of runners 10 is three, and the runners 10 are symmetric about the middle of the gate 9. By providing the gate 9 and the runner 10, the molten metal enters the runner 10 from the gate 9 and then enters the gap between the moving die forming plate 4 and the fixed die forming plate 3.

[0027] In an embodiment of the present utility model, a baffle 11 corresponding to the gate 9 and the runner 10 is provided on the side of the moving die 2 close to the fixed die 1, and guide posts 12 are respectively provided at its four corners. A guide sleeve 13 slidably inserted with the guide posts 12 is provided on the side of the fixed die 1 close to the moving die 2. By providing the guide posts 12 and the guide sleeve 13, when the moving die 1 moves towards the fixed die 2, the guide posts 12 are driven to enter the guide sleeve 13, so that the moving die 2 and the fixed die 1 are accurately docked.

[0028] In an embodiment of the present utility model, second sliding holes 14 are symmetrically provided inside the fixed die 1. One end of the second sliding hole 14 penetrates through the surface of the fixed die forming plate 3, and a demolding rod 15 is slidably inserted inside it. A transmission device is provided at the end of the demolding rod 15 away from the fixed die forming plate 3. By providing the second sliding holes 14, the demolding rod 15, and the transmission device, the transmission device drives the demolding rod 15 to move in the second sliding holes 14, and the demolding rod 15 penetrates out of the surface of the fixed die forming plate 3, thereby pushing out the casting in the fixed die 1.

[0029] In an embodiment of the present utility model, the first sliding hole 6 is opened at the center of the fixed mold forming plate 3. By setting the above structure, the air between the moving mold forming plate 4 and the fixed mold forming plate 3 can be effectively and evenly evacuated.

[0030] In an embodiment of the present utility model, the number of the second sliding holes 14 is two and they are symmetric about the first sliding hole 6. By setting the above structure, the ejector rods 15 push from both ends of the casting, and the thrust received by the casting is more uniform, and the effect of ejecting the casting is better.

[0031] In an embodiment of the present utility model, the telescopic device is a cylinder or a hydraulic cylinder. By setting the above structure, the output end of the cylinder or the hydraulic cylinder drives the telescopic rod 71 to move. Here, the cylinder or the hydraulic cylinder is a high-temperature-resistant cylinder or a high-temperature-resistant hydraulic cylinder.

[0032] In an embodiment of the present utility model, the transmission device is a cylinder or a hydraulic cylinder. By setting the above structure, the output end of the cylinder or the hydraulic cylinder drives the ejector rod 15 to move. Here, the cylinder or the hydraulic cylinder is a high-temperature-resistant cylinder or a high-temperature-resistant hydraulic cylinder.

[0033] During use, first, move the moving mold 2 to the fixed mold 1 so that the moving mold forming plate 4 and the fixed mold forming plate 3 are inserted. Then start the telescopic device. The telescopic device drives the telescopic rod 71 to move. The telescopic rod 71 drives the plug 72 to slide in the first sliding hole 6, and at the same time drives the air inlet part 73 to move to the gap between the moving mold forming plate 4 and the fixed mold forming plate 3. Close the telescopic device, and then start the vacuum pump. The vacuum pump and the vacuum extraction tube 5 cooperate. The top of the vacuum extraction tube 5 is communicated with the vacuum extraction hole 8 to evacuate the air inside the gap between the moving mold forming plate 4 and the fixed mold forming plate 3. After the gap between the moving mold forming plate 4 and the fixed mold forming plate 3 is evacuated, turn off the vacuum pump, start the telescopic device, so that the plug 72 moves into the first sliding hole 6 to seal the first sliding hole 6. Then pour the molten metal into the gate 9. The molten metal enters the runner 10 through the gate 9 and enters the gap between the moving mold forming plate 4 and the fixed mold forming plate 3 through the runner 10. At the same time, keep the moving mold 2 and the fixed mold 1 pressed tightly. After the molten metal forms a casting, the moving mold 2 and the fixed mold 1 are separated. At the same time, start the transmission device. The transmission device drives the ejector rod 15 to slide in the second sliding hole 14, and the ejector rod 15 penetrates out of the second sliding hole 14 to push out the casting.

[0034] It is understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A feeding-uniform die-casting mold, comprising a fixed mold (1) and a movable mold (2) slidably connected to the top of the fixed mold (1), characterized in that, A fixed mold plate (3) is provided at the top of the fixed mold (1). A movable mold plate (4) is provided at one end of the movable mold (2) close to the fixed mold (1). The fixed mold plate (3) and the movable mold plate (4) are hermetically inserted. A vacuum extraction pipe (5) is provided on the fixed mold plate (3). One end of the vacuum extraction pipe (5) is provided with a vacuum pump. A first sliding hole (6) is formed inside the fixed mold plate (3). A telescopic assembly (7) communicating with the vacuum extraction pipe (5) is slidably connected inside the first sliding hole (6). One end of the telescopic assembly (7) penetrates to the outside of the fixed mold (1) and is provided with a driving device.

2. The feeding-uniform die-casting mold according to claim 1, wherein: The telescopic assembly (7) includes a telescopic rod (71), a plug (72) and an air inlet part (73). The output end of the driving device is installed with one end of the telescopic rod (71). The other end of the telescopic rod (71) slidably passes through the first sliding hole (6). The end of the telescopic rod (71) away from the driving device is installed with the plug (72). The plug (72) is slidably and hermetically connected with the first sliding hole (6). The two ends of the air inlet part (73) are respectively installed with the plug (72) and the vacuum extraction pipe (5).

3. The feeding-uniform die-casting mold according to claim 2, characterized in that: A cavity is formed inside the air inlet part (73), and the air inlet part (73) is provided with a plurality of vacuum extraction holes (8) spaced circumferentially.

4. A feeding-uniform die-casting mold according to claim 3, characterized in that: A gate (9) is formed inside the fixed mold (1). A runner (10) with two ends respectively communicating with the gate (9) and the fixed mold plate (3) is formed on the surface of the fixed mold (1). The number of the runners (10) is three, and the runners (10) are symmetric about the middle of the gate (9).

5. The feeding-uniform die-casting mold according to claim 4, characterized in that: A baffle (11) corresponding to the gate (9) and the runner (10) is provided on one side of the movable mold (2) close to the fixed mold (1), and guide posts (12) are respectively provided at its four corners. A guide sleeve (13) slidably inserted with the guide posts (12) is provided on one side of the fixed mold (1) close to the movable mold (2).

6. The feeding-uniform die-casting mold according to claim 5, wherein: Second sliding holes (14) are symmetrically formed inside the fixed mold (1). One end of each second sliding hole (14) penetrates to the surface of the fixed mold plate (3), and a demolding rod (15) is slidably inserted inside. A transmission device is provided at the end of the demolding rod (15) away from the fixed mold plate (3).

7. The feeding-uniform die-casting mold according to claim 6, characterized in that: The first sliding hole (6) is formed at the center of the fixed mold plate (3).

8. The feed-uniform die-casting mold according to claim 6, characterized in that: The number of the second sliding holes (14) is two and they are symmetric about the first sliding hole (6).

9. A feeding-uniform die-casting mold according to any one of claims 1-7, characterized in that: The telescopic device is a cylinder or a hydraulic cylinder.

10. A feeding-uniform die-casting mold according to any one of claims 1-7, characterized in that: The transmission device is a cylinder or a hydraulic cylinder.

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