Mould pressing structure capable of preventing aluminum flying and blocking

Abstract

The utility model provides a mould pressing structure capable of preventing aluminum flying and blocking, which solves the problem of aluminum spraying or direct impact on a vacuum valve caused by over-high speed of molten aluminum in an existing air flow channel, and adopts the main scheme that the mould pressing structure comprises a fixed mould core and a movable mould core which are mutually assembled, and a square mould cavity is formed at one corner after the fixed mould core and the movable mould core are assembled; the fixed mold core and the movable mold core are respectively provided with an insertion boss and an exhaust flow channel on respective correspondingly matched surfaces, the exhaust flow channel comprises a first buffer bag, a second buffer bag, a first overflow well and a second overflow well, and the first overflow well and the second overflow well are respectively and correspondingly communicated with two inner sides of the mold cavity; the opposite ends of the first buffering bag and the second buffering bag are communicated through a first flow channel, and the opposite ends of the first buffering bag and the second buffering bag are communicated with a second flow channel and a third flow channel respectively. And a concave structure formed by combining the first buffer bag, the second buffer bag, the first flow channel, the second flow channel and the third flow channel is consistent with the convex structure of the insertion boss.

Description

Technical Field

[0001] The utility model relates to the technical field of die pressing and die casting, in particular to a die pressing structure for preventing aluminum flying and clogging. Background Art

[0002] During the die-casting process, excessive aluminum molten metal in the exhaust flow channel can cause aluminum spray or directly impact the vacuum valve, blocking the valve and causing vacuum failure. To mitigate the impact of the aluminum molten metal on the vacuum valve, a vacuum buffer structure is typically designed into the mold base. However, if aluminum spray occurs in the exhaust flow channel on the mold core before the aluminum molten metal enters the vacuum buffer structure on the mold base, the vacuum valve will no longer be able to form a vacuum state, resulting in vacuum failure.

[0003] When die-casting a part, molten aluminum adhering to the mold core's parting surface can cause the mold to not close properly, leading to a series of problems such as unqualified castings and inoperative vacuum valves. Therefore, creating a velocity buffer and a boss to prevent aluminum spray penetration in the mold core exhaust flow path is of great significance to improving die-casting production efficiency and casting quality. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes a molded structure to prevent flying aluminum and clogging.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a mold pressing structure to prevent flying aluminum and clogging, comprising: a fixed film core and a movable film core that are molded together, and a square mold cavity is formed at one corner after the two are molded together, and the fixed film core and the movable film core are respectively provided with a through boss and an exhaust flow channel on their respective corresponding matching surfaces, and the exhaust flow channel comprises a first buffer bag, a second buffer bag, a first overflow well and a second overflow well, the first overflow well and the second overflow well are respectively connected to the two inner sides of the mold cavity, and the first buffer bag and the second buffer bag are connected at the opposite end. The first and second overflow wells are connected through the L-shaped fourth flow channel on the side away from the mold cavity and then merge with the second flow channel and are connected to the outside. The second overflow well is connected with the second buffer bag through the fifth flow channel at the end close to the second buffer bag. The second flow channel is arranged through the fourth flow channel, and the third flow channel is connected to the outside at the end away from the second buffer bag. The concave structure formed by the combination of the first buffer bag, the second buffer bag, the first flow channel, the second flow channel and the third flow channel is consistent with the protruding structure of the inserted boss.

[0006] Furthermore, the protrusion height of the insertion boss does not exceed 3 mm, and the top surface thereof is spaced apart from the inner bottom surface of the concave structure formed by the combination of the first buffer bag, the second buffer bag, the first flow channel, the second flow channel and the third flow channel.

[0007] Furthermore, the inner bottom surfaces of the first flow channel, the second flow channel and the third flow channel are parallel planes, and the concave depths of the first buffer bag are 11 mm, and the concave depth of the second buffer bag is 15 mm.

[0008] Furthermore, the concave depth of the fourth flow channel at one end close to the first overflow well is 7 mm, the concave depth of the end close to the first buffer bag is 8 mm, and the concave depth of the fifth flow channel is 7 mm.

[0009] Furthermore, the inner bottom and top corresponding to each structure of the exhaust flow channel are chamfered.

[0010] Furthermore, a downward slope is provided at the connection between the mold cavity and the first overflow well and the second overflow well.

[0011] Compared with the existing technology, the beneficial effects of the utility model include: avoiding the problems of flying aluminum and clogging of the vacuum valve pipeline in the vacuum flow channel inside the molded structure. After introducing this design feature, the risk of flying aluminum and clogging of the vacuum valve pipeline in the vacuum flow channel is greatly reduced, and the die-casting production efficiency and casting quality performance are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0013] Figure 1 Schematically shows a schematic diagram of a molded structure proposed according to one embodiment of the present utility model;

[0014] Figure 2 The figure schematically shows a schematic diagram of the insertion boss structure proposed according to one embodiment of the present utility model;

[0015] Figure 3 Schematically shows a top view of a movable membrane core according to one embodiment of the present invention;

[0016] Figure 4 Schematically shows a schematic diagram of the exhaust flow channel structure proposed according to one embodiment of the utility model;

[0017] Figure 5 Schematically shows an internal cross-sectional view of a molded structure proposed according to one embodiment of the present utility model;

[0018] Figure 6 The diagram schematically shows the flow direction of aluminum liquid inside the exhaust flow channel according to one embodiment of the present invention.

[0019] Numbers in the figure: 1. Fixed film core; 2. Moving film core; 3. Mold cavity; 4. Insertion boss; 5. Exhaust flow channel; 6. First buffer bag; 7. Second buffer bag; 8. First overflow well; 9. Second overflow well; 10. First flow channel; 11. Second flow channel; 12. Third flow channel; 13. Fourth flow channel; 15. Fifth flow channel; 16. Slope. DETAILED DESCRIPTION

[0020] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0021] According to one embodiment of the present invention, Figures 1-6 Shown.

[0022] A molded structure to prevent flying aluminum and clogging, such as Figure 2-Figure 4 As shown, it specifically includes: a fixed film core 1 and a movable film core 2 that are molded together, and a square mold cavity 3 is formed at one corner after the two are molded together. The fixed film core 1 and the movable film core 2 are respectively provided with an insertion boss 4 and an exhaust flow channel 5 on their respective corresponding mating surfaces. The exhaust flow channel 5 includes a first buffer bag 6, a second buffer bag 7, a first overflow well 8 and a second overflow well 9. The first overflow well 8 and the second overflow well 9 are respectively connected to the two inner sides of the mold cavity 3. The first buffer bag 6 and the second buffer bag 7 are connected at the opposite end through the first flow channel 10, and the two are respectively connected at the opposite end. Second flow channel 11 and third flow channel 12, the first overflow well 8 merges with the second flow channel 11 through the L-shaped fourth flow channel 13 on the side away from the mold cavity 3 and is connected to the outside, the second overflow well 9 is connected with the second buffer bag 7 through the fifth flow channel 15 at the end close to the second buffer bag 7, the second flow channel 11 is arranged through the fourth flow channel 13, and the third flow channel 12 is connected to the outside at the end away from the second buffer bag 7. The concave structure formed by the combination of the first buffer bag 6, the second buffer bag 7, the first flow channel 10, the second flow channel 11 and the third flow channel 12 is consistent with the convex structure of the inserted boss 4.

[0023] Through the above structure, the utility model has two design features on the exhaust flow channel 5: one is to make a speed buffer bag on the exhaust flow channel 5, and the design of the first buffer bag 6 and the second buffer bag 7 can be used to slow down the speed of the aluminum liquid in the exhaust flow channel 5, so as to reduce the impact of the aluminum liquid on the vacuum valve; the second is to make a 3mm high insertion boss 4 on the opposite mold core of the exhaust flow channel 5 to prevent aluminum spraying. The 3mm high insertion boss 4 is designed to block the aluminum liquid in the exhaust flow channel 5 from entering the mold core parting mating surface, reducing or avoiding the appearance of aluminum on the mold core parting mating surface, which affects the closure of the vacuum valve, resulting in the formation of a vacuum state inside the mold and the inability to close the mold core.

[0024] In this embodiment, if Figure 5 As shown, the protrusion height of the insertion boss 4 is 3 mm, and its top surface is spaced apart from the inner bottom surface of the concave structure formed by the first buffer bag 6, the second buffer bag 7, the first flow channel 10, the second flow channel 11 and the third flow channel 12.

[0025] Furthermore, the inner bottom surfaces of the first flow channel 10, second flow channel 11, and third flow channel 12 are parallel planes, and each has a concave depth of 10 mm. The first buffer bag 6 has a concave depth of 11 mm, and the second buffer bag 7 has a concave depth of 15 mm. The fourth flow channel 13 has a concave depth of 7 mm at the end near the first overflow well 8, and a concave depth of 8 mm at the end near the first buffer bag 6. The fifth flow channel 15 has a concave depth of 7 mm.

[0026] During die casting, the molten aluminum in the exhaust channel 5 on the mold core enters the buffer bag, causing the molten aluminum to swirl in the buffer bag to reduce its speed, thereby reducing the impact of the molten aluminum on the vacuum valve, further reducing the risk of the vacuum valve being blocked. When the mold is closed, the 3mm high insertion boss 4 of the fixed mold extends into the exhaust channel 5 of the movable mold, sealing the molten aluminum in the exhaust channel 5 and allowing it to enter the mold core parting surface, thereby preventing aluminum spraying from the exhaust channel 5. The flow direction of the molten aluminum in the exhaust channel 5 can be seen in the attached Figure 5 As shown by the arrow in .

[0027] Similarly, to ensure a tight fit between the insertion boss 4 and the exhaust channel 5, the inner bottom and top of each structure of the exhaust channel are chamfered. A downward slope 16 is provided at the connection between the mold cavity 3 and the first overflow well 8 and the second overflow well 9 to ensure easy inflow of molten aluminum.

[0028] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of protection of the present invention.

Claims

1. A molded structure to prevent flying aluminum and clogging, characterized in that, include: The fixed film core and the movable film core are molded together, and a square mold cavity is formed at one corner after the two are molded together, and the fixed film core and the movable film core are respectively provided with an insertion boss and an exhaust flow channel on their respective corresponding mating surfaces, and the exhaust flow channel includes a first buffer bag, a second buffer bag, a first overflow well and a second overflow well, and the first overflow well and the second overflow well are respectively connected to the two inner sides of the mold cavity, and the first buffer bag and the second buffer bag are connected at the opposite end through the first flow channel, and the two are respectively connected with the second flow channel and the third flow channel at the opposite end, the first overflow well is connected to the outside after merging with the second flow channel through the L-shaped fourth flow channel on the side away from the mold cavity, and the second overflow well is connected to the second buffer bag at the end close to the second buffer bag through the fifth flow channel, the second flow channel is arranged through the fourth flow channel, and the third flow channel is connected to the outside at the end away from the second buffer bag, and the concave structure formed by the combination of the first buffer bag, the second buffer bag, the first flow channel, the second flow channel and the third flow channel is consistent with the convex structure of the insertion boss.

2. The molded structure for preventing flying aluminum and clogging according to claim 1, characterized in that: The protrusion height of the insertion boss does not exceed 3 mm, and the top surface thereof is spaced apart from the inner bottom surface of the concave structure formed by the combination of the first buffer bag, the second buffer bag, the first flow channel, the second flow channel and the third flow channel.

3. The molded structure for preventing flying aluminum and clogging according to claim 2, characterized in that: The inner bottom surfaces of the first flow channel, the second flow channel and the third flow channel are parallel planes, and the concave depths of the first buffer bag are 11 mm, and the concave depth of the second buffer bag is 15 mm.

4. The molded structure for preventing flying aluminum and clogging according to claim 3, characterized in that: The concave depth of the fourth flow channel at one end close to the first overflow well is 7 mm, the concave depth of the end close to the first buffer bag is 8 mm, and the concave depth of the fifth flow channel is 7 mm.

5. The molded structure for preventing flying aluminum and clogging according to claim 1, characterized in that: The inner bottom and top corresponding to each structure of the exhaust flow channel are chamfered.

6. The molded structure for preventing flying aluminum and plugging according to claim 1, characterized in that: A downward slope is provided at the connection between the mold cavity and the first overflow well and the second overflow well.

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