Automobile core rod die with optimized exhaust performance

Abstract

The utility model discloses an automobile core rod die with optimized exhaust performance, which relates to the technical field of automobile core rod dies, and comprises a base, the top surface of the base is connected with a top seat in a sliding manner, a lower die is fixedly mounted on the top surface of the base, an upper die is fixedly mounted on the bottom surface of the top seat, an ejection mechanism is mounted in the lower die, and the ejection mechanism is connected with the top seat in a sliding manner. When the mold is used, after the mold is closed, the air suction assembly is used for exhausting air in the cavity, the first telescopic rod drives the first sealing plate to move upwards at the moment, the communication seat forms the maximum ventilation hole diameter, rapid air exhausting is achieved, and after air exhausting is completed, the first telescopic rod drives the first sealing plate to move downwards to be flush with the top face of the upper mold. Due to the fact that the exhaust channel is blocked in real time, molten metal cannot permeate into the exhaust channel, and the flash defect is avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive mandrel mold technology, and in particular to an automotive mandrel mold with optimized exhaust performance. Background Technology

[0002] Automotive mandrels are precision molded parts in key components of automobile engines and transmissions. They are usually manufactured using die casting to form complex internal cavity structures. During the die casting process, the venting system plays a crucial role. It can effectively expel air from the mold cavity and gases brought in by the molten metal, avoiding defects such as porosity and cold shuts, ensuring smooth filling of the molten metal and improving the density of the casting.

[0003] However, the opening of venting holes in traditional molds can easily lead to defects in the workpiece. When the molten material is under high pressure, it can easily seep into the venting channel and form flash. The workpiece needs to be polished afterward. To reduce this defect, the diameter of the venting channel is usually small. However, the small diameter of the venting channel results in a slower air discharge speed from the cavity, which affects work efficiency. In view of this, this application proposes an automotive mandrel mold with optimized venting performance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automotive mandrel mold with optimized exhaust performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automotive mandrel mold with optimized exhaust performance includes a base, a top seat slidably connected to the top surface of the base, a lower mold fixedly mounted on the top surface of the base, an upper mold fixedly mounted on the bottom surface of the top seat, an ejection mechanism installed inside the lower mold, a connecting seat fixedly connected to the top surface of the upper mold, multiple exhaust pipes fixedly connected to the outside of the connecting seat, multiple exhaust pipes being fixedly connected to and connected to an annular pipe, a first sealing plate slidably connected inside the connecting seat, a first electric telescopic rod fixedly mounted at the top of the connecting seat, and the bottom end of the first electric telescopic rod being fixedly connected to the top surface of the first sealing plate, and an air intake assembly mounted on the top surface of the top seat, the air intake assembly being connected to the annular pipe.

[0007] Preferably, the suction assembly includes a vacuum pump, which is fixedly mounted on the top surface of the top seat. A connecting pipe is fixed to and connected to the outside of the vacuum pump, and the connecting pipe is connected to the ring pipe.

[0008] Preferably, the ejection mechanism includes a plurality of second electric telescopic rods, which are symmetrically installed on the bottom wall of the lower mold. A second sealing plate is slidably connected inside the lower mold, and the top end of each second electric telescopic rod is fixedly connected to the bottom surface of the second sealing plate.

[0009] Preferably, a sealing ring is installed at the top of the lower mold and the bottom of the upper mold, and multiple gates are installed on the top surface of the upper mold.

[0010] Preferably, a bracket is fixedly installed on the top surface of the top seat, and a mounting base is fixedly installed on the top surface of the bracket.

[0011] Preferably, a plurality of guide rods are symmetrically installed on the top surface of the base, and each guide rod is slidably connected to the top seat. A pad is slidably connected to the outer side of each guide rod, and a spring is installed between the bottom surface of each pad and the top surface of the base.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, through devices such as a connecting seat, an air suction component, a first telescopic rod, a first sealing plate, an annular pipe, and an exhaust pipe, enables the air suction component to vent the cavity after the mold is closed. At this time, the first telescopic rod drives the first sealing plate to move upward, so that the connecting seat forms the maximum ventilation hole diameter, achieving rapid air extraction. After the venting is completed, the first telescopic rod drives the first sealing plate to move downward until it is flush with the top surface of the upper mold, completely sealing the connecting seat. Since the exhaust channel is blocked in real time, the molten metal cannot seep in, avoiding flash defects.

[0014] 2. This utility model uses devices such as sealing rings, springs, guide rods, and pads to achieve precise alignment between the upper and lower molds through the guide rods, and the springs can reduce the impact force when the upper and lower molds are closed. Furthermore, the sealing rings improve the cavity sealing ability after the upper and lower molds are closed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an automotive mandrel mold with optimized exhaust performance proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the mounting base structure for an automotive mandrel mold with optimized exhaust performance proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the connecting seat installation structure of an automotive mandrel mold with optimized exhaust performance proposed in this utility model.

[0018] Figure 4This is a schematic diagram of the ejection mechanism of an automotive mandrel mold with optimized exhaust performance proposed in this utility model.

[0019] In the diagram: 1. Base; 2. Guide rod; 3. Top seat; 4. Spring; 5. Pad; 6. Lower mold; 7. Upper mold; 8. Vacuum pump; 9. Connecting pipe; 10. Gate; 11. Connecting seat; 12. Bracket; 13. Mounting seat; 14. Ring pipe; 15. Exhaust pipe; 16. First electric telescopic rod; 17. First sealing plate; 18. Sealing ring; 19. Second sealing plate; 20. Second electric telescopic rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] This utility model provides a technical solution: such as Figure 1-4 As shown, an automotive mandrel mold with optimized exhaust performance includes a base 1, a top seat 3 slidably connected to the top surface of the base 1, a lower mold 6 fixedly installed on the top surface of the base 1, an upper mold 7 fixedly installed on the bottom surface of the top seat 3, an ejection mechanism installed inside the lower mold 6, a connecting seat 11 fixedly connected to the top surface of the upper mold 7, a plurality of exhaust pipes 15 fixedly connected to the outside of the connecting seat 11, a ring pipe 14 fixedly connected to the plurality of exhaust pipes 15, a first sealing plate 17 slidably connected inside the connecting seat 11, a first electric telescopic rod 16 fixedly installed at the top of the connecting seat 11, and the bottom end of the first electric telescopic rod 16 fixedly connected to the top surface of the first sealing plate 17, and an air intake component installed on the top surface of the top seat 3, and the air intake component connected to the ring pipe 14.

[0022] The suction component facilitates air intake through the ring tube 14, thereby performing air extraction on the cavity after mold closing. When the cavity is under vacuum, the first sealing plate 17 can be slid downward by the first electric telescopic rod 16, making the bottom surface of the first sealing plate 17 flush with the top wall of the upper mold 7, thus sealing the connecting seat 11. This prevents flash or burrs from forming on the molded workpiece due to the venting hole. Furthermore, the opening of the connecting seat 11 can be selected according to the specifications of the upper mold 7 to facilitate the rapid discharge of air from the cavity.

[0023] Furthermore, the suction assembly includes a vacuum pump 8, which is fixedly installed on the top surface of the top seat 3. A connecting pipe 9 is fixed to and connected to the outside of the vacuum pump 8, and the connecting pipe 9 is connected to the ring pipe 14. The vacuum pump 8 facilitates the extraction of air from the cavity.

[0024] Furthermore, the ejection mechanism includes a plurality of second electric telescopic rods 20, and the plurality of second electric telescopic rods 20 are symmetrically installed on the bottom wall of the lower mold 6. A second sealing plate 19 is slidably connected inside the lower mold 6, and the top end of each second electric telescopic rod 20 is fixedly connected to the bottom surface of the second sealing plate 19.

[0025] Furthermore, sealing rings 18 are installed at the top of the lower mold 6 and the bottom of the upper mold 7. Multiple gates 10 are installed on the top surface of the upper mold 7. The sealing rings 18 can effectively increase the sealing between the upper mold 7 and the lower mold 6.

[0026] Furthermore, a bracket 12 is fixedly installed on the top surface of the top seat 3, and a mounting base 13 is fixedly installed on the top surface of the bracket 12, and the mounting base 13 is used for connecting to an external hydraulic cylinder.

[0027] Furthermore, multiple guide rods 2 are symmetrically installed on the top surface of the base 1, and each guide rod 2 is slidably connected to the top seat 3. A pad 5 is slidably connected to the outside of each guide rod 2. A spring 4 is installed between the bottom surface of each pad 5 and the top surface of the base 1. The guide rods 2 prevent the upper mold 7 from shifting, and the spring 4 can be used to reduce the impact force between the upper mold 7 and the lower mold 6.

[0028] This utility model provides an automotive mandrel mold with optimized exhaust performance. The specific working principle is as follows: First, the external hydraulic cylinder drives the top seat 3 to move down along the guide rod 2 to close the mold through the mounting seat 13. The impact force is buffered by the spring 4 and the pad 5. The guide rod 2 ensures that the upper mold 7 and the lower mold 6 are accurately aligned and a seal is formed by the sealing ring 18.

[0029] After the mold is closed, the vacuum pump 8 is started and the cavity is evacuated through the connecting pipe 9, the ring pipe 14, the exhaust pipe 15 and the connecting seat 11, so that the cavity can quickly reach the predetermined vacuum level. Then the first electric telescopic rod 16 drives the first sealing plate 17 to descend and close the connecting seat 11.

[0030] Afterwards, the molten material is injected into the cavity through the gate 10. During the pressure holding and cooling process, the sealing structure prevents air backflow and avoids flash defects. After cooling is completed, the top seat 3 moves upward to open the mold, and the second electric telescopic rod 20 drives the second sealing plate 19 to smoothly eject the product.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A car mandrel mold with optimized exhaust performance, comprising a base (1), characterized in that, The top surface of the base (1) is slidably connected to the top seat (3), the top surface of the base (1) is fixedly installed with the lower mold (6), the bottom surface of the top seat (3) is fixedly installed with the upper mold (7), the lower mold (6) is installed with an ejection mechanism, the top surface of the upper mold (7) is fixed and connected with a connecting seat (11), the outer side of the connecting seat (11) is fixed and connected with multiple exhaust pipes (15), the multiple exhaust pipes (15) are fixed and connected with a ring pipe (14), the connecting seat (11) is sealed and slidably connected with the first sealing plate (17), the top of the connecting seat (11) is fixedly installed with the first electric telescopic rod (16), and the bottom end of the first electric telescopic rod (16) is fixedly connected with the top surface of the first sealing plate (17). The top surface of the top seat (3) is installed with an air suction component, and the air suction component is connected to the ring pipe (14).

2. The automotive mandrel mold with optimized exhaust performance according to claim 1, characterized in that, The suction assembly includes a vacuum pump (8), which is fixedly installed on the top surface of the top seat (3). A connecting pipe (9) is fixed and connected to the outside of the vacuum pump (8), and the connecting pipe (9) is connected to the ring pipe (14).

3. The automotive mandrel mold with optimized exhaust performance according to claim 1, characterized in that, The ejection mechanism includes multiple second electric telescopic rods (20), and the multiple second electric telescopic rods (20) are symmetrically installed on the bottom wall of the lower mold (6). The lower mold (6) is sealed and slidably connected with a second sealing plate (19), and the top end of each second electric telescopic rod (20) is fixedly connected to the bottom surface of the second sealing plate (19).

4. The automotive mandrel mold with optimized exhaust performance according to claim 1, characterized in that, The top of the lower mold (6) and the bottom of the upper mold (7) are both equipped with sealing rings (18), and the top surface of the upper mold (7) is equipped with multiple gates (10).

5. The automotive mandrel mold with optimized exhaust performance according to claim 1, characterized in that, A bracket (12) is fixedly installed on the top surface of the top seat (3), and a mounting base (13) is fixedly installed on the top surface of the bracket (12).

6. The automotive mandrel mold with optimized exhaust performance according to claim 1, characterized in that, The top surface of the base (1) is symmetrically equipped with multiple guide rods (2), and each guide rod (2) is slidably connected to the top seat (3). Each guide rod (2) is slidably connected to a pad (5) on its outer side. A spring (4) is installed between the bottom surface of each pad (5) and the top surface of the base (1).

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