Hot pressing device for light alloy investment casting

Abstract

The utility model relates to the technical field of investment casting, and discloses a hot-pressing device for light alloy investment casting, which comprises a hot-pressing seat and a die, a hot-pressing plate is movably connected above the die, the hot-pressing device further comprises an air outlet hole, a mounting groove is arranged in the middle of the upper surface of the hot-pressing seat, and the die is fixedly connected to the inner wall of the bottom end of the mounting groove. The electric-hydraulic push rod is controlled to work, the hot pressing plate on the bottom side of the adjusting plate can be driven to move up and down through the piston and the connecting column, hot pressing operation of light alloy investment casting is carried out through a mold, after hot pressing is completed, the electric-hydraulic push rod pushes the hot pressing plate to move upwards to reset, and meanwhile the piston moves upwards in the piston groove. And air in the piston groove can be pressed into the air guide groove through the air outlet pipe and exhausted through small air outlet holes evenly formed in the inner walls of the two sides of the mounting groove, air blowing and heat dissipation are further automatically conducted on the mold, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, in particular to a hot pressing device for investment casting of light alloys. Background Technique

[0002] With the rapid development of industries such as automobiles, aviation, and ships, the demand for load-bearing parts and structural parts with complex structures is increasing day by day, which puts higher requirements on casting production. Using precision investment castings of aluminum and magnesium light alloys instead of combined parts helps to improve the reliability of equipment.

[0003] The inventor found that at least the following problems in the prior art have not been solved. After the hot pressing operation in the investment casting of light alloys, it is necessary to wait for it to cool naturally. Of course, it is also possible to use a fan for blowing cooling. However, when the hot pressing operation is carried out in the investment casting of light alloys, the fan blowing is likely to cause the loss of necessary heat, and it is necessary for the staff to repeatedly control the opening and closing of the fan, and it also wastes electric energy.

[0004] Therefore, we propose a hot pressing device for investment casting of light alloys, which can automatically perform blowing heat dissipation and save electric energy after the hot pressing of investment casting of light alloys. Content of the Utility Model

[0005] The purpose of the utility model is to provide a hot pressing device for investment casting of light alloys, which solves the problems put forward in the background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A hot pressing device for investment casting of light alloys, including a hot pressing seat and a mold. A hot pressing plate is movably connected above the mold. It also includes air outlet holes. A mounting groove is opened in the middle of the upper surface of the hot pressing seat. The mold is fixedly connected to the inner wall of the bottom end of the mounting groove. The air outlet holes are symmetrically opened on the inner walls on both sides of the mounting groove. An adjusting plate is fixedly installed at the top end of the hot pressing plate. Connecting columns are vertically and fixedly installed at both ends of the bottom side of the adjusting plate. Piston grooves are vertically opened inside both sides of the hot pressing seat. A piston is slidably connected inside the piston groove. The bottom ends of the two connecting columns are respectively fixedly connected to the middle parts of the upper surfaces of the two pistons. An air outlet pipe penetrates and is installed at the upper end of the inner wall of the piston groove close to the mounting groove. An air inlet pipe penetrates and is installed at the upper end of the inner wall on the other side of the piston groove.

[0007] As an optional solution of the technical solution of the present application, a electro-hydraulic push rod is fixedly connected to the inner wall of the bottom end of the piston groove. The telescopic end of the electro-hydraulic push rod is fixedly connected to the middle part of the bottom side of the piston.

[0008] As an optional solution of the technical solution of the present application, the air outlet end of the air outlet pipe is communicated with a wind guide groove. Check valves are arranged inside both the air inlet pipe and the air outlet pipe.

[0009] As an alternative embodiment of the technical solution of the present application, the air guide groove is communicated with the air outlet hole, and the air outlet hole is aligned with the top end of the mold.

[0010] As an alternative embodiment of the technical solution of the present application, a guide groove is penetrated and opened on the inner wall of the top end of the piston groove, and the connecting column is slidably connected with the guide groove.

[0011] As an alternative embodiment of the technical solution of the present application, a sealing ring is adhered to the inner wall of the guide groove, and the sealing ring is attached to the outer side of the connecting column.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: controlling the operation of the electro-hydraulic push rod, the hot pressing plate at the bottom side of the adjusting plate can be driven to move up and down through the piston and the connecting column, and the hot pressing operation of the investment casting of light alloy is carried out through the mold. When the hot pressing is completed, the electro-hydraulic push rod pushes the hot pressing plate to move up and reset. At the same time, the piston moves up in the piston groove, and the air in the piston groove can be pressed into the air guide groove through the air outlet pipe and discharged through the small air outlet holes uniformly opened on the inner walls on both sides of the installation groove, further automatically blowing and cooling the mold, with high automation degree. Description of the Drawings

[0013] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0014] Figure 1 It is the front view of a hot pressing device for investment casting of light alloy of the present utility model;

[0015] Figure 2 It is the schematic diagram of part A of a hot pressing device for investment casting of light alloy of the present utility model.

[0016] In the figure: 1, hot pressing base; 11, installation groove; 12, mold; 13, hot pressing plate; 14, adjusting plate; 15, piston groove; 16, piston; 17, connecting column; 18, electro-hydraulic push rod; 2, air outlet hole; 21, air guide groove; 22, air outlet pipe; 23, air inlet pipe; 24, one-way valve; 25, guide groove; 26, sealing ring. Detailed Embodiments

[0017] Please refer to Figure 1 - Figure 2, the present utility model provides a technical solution: a hot pressing device for investment casting of light alloys, including a hot pressing base 1 and a mold 12. A hot pressing plate 13 is movably connected above the mold 12. It also includes an air outlet hole 2. A mounting groove 11 is opened in the middle of the upper surface of the hot pressing base 1. The mold 12 is fixedly connected to the inner wall of the bottom end of the mounting groove 11. The air outlet holes 2 are symmetrically opened on the inner walls on both sides of the mounting groove 11, and the air outlet holes 2 are aligned with the top end of the mold 12. A regulating plate 14 is fixedly installed at the top end of the hot pressing plate 13. Two vertical connecting columns 17 are fixedly installed at both ends of the bottom side of the regulating plate 14. Vertical piston grooves 15 are opened inside both sides of the hot pressing base 1. A piston 16 is slidably connected inside the piston grooves 15. The bottom ends of the two connecting columns 17 are respectively fixedly connected to the middle parts of the upper surfaces of the two pistons 16. An air outlet pipe 22 is penetrated and installed at the upper end of the inner wall of the piston groove 15 close to the mounting groove 11. The air outlet end of the air outlet pipe 22 is communicated with a wind guiding groove 21, and the wind guiding groove 21 is communicated with the air outlet hole 2. An electro-hydraulic push rod 18 is fixedly connected to the inner wall of the bottom end of the piston groove 15. The telescopic end of the electro-hydraulic push rod 18 is fixedly connected to the middle part of the bottom side of the piston 16.

[0018] In this technical solution, control the electro-hydraulic push rod 18 to work. The hot pressing plate 13 at the bottom side of the regulating plate 14 can be driven to move up and down through the piston 16 and the connecting column 17, and the hot pressing operation of investment casting of light alloys is carried out through the mold 12. After the hot pressing is completed, the electro-hydraulic push rod 18 pushes the hot pressing plate 13 to move up and reset. At the same time, the piston 16 moves up in the piston groove 15. The air in the piston groove 15 can be pressed into the wind guiding groove 21 through the air outlet pipe 22 and discharged through the small air outlet holes 2 evenly opened on the inner walls on both sides of the mounting groove 11, further automatically blowing and cooling the mold 12, with high automation. It should be noted that: due to the small size of the air outlet hole 2, the flow rate of the air flow discharged through the air outlet hole 2 is relatively fast, and the heat dissipation effect is good.

[0019] In this embodiment, an air inlet pipe 23 is penetrated and installed at the upper end of the inner wall on the other side of the piston groove 15. Check valves 24 are provided inside both the air inlet pipe 23 and the air outlet pipe 22.

[0020] In this technical solution, by providing check valves 24 inside both the air inlet pipe 23 and the air outlet pipe 22, the air flow direction inside the air inlet pipe 23 and the air outlet pipe 22 can be controlled. When the piston 16 moves down, the outside air can be drawn into the piston groove 15 through the air inlet pipe 23 for air supplement.

[0021] In this embodiment, a guiding groove 25 is penetrated and opened at the inner wall of the top end of the piston groove 15. The connecting column 17 is slidably connected to the guiding groove 25. A sealing ring 26 is adhered to the inner wall of the guiding groove 25, and the sealing ring 26 fits with the outer side of the connecting column 17.

[0022] In this technical solution, the movement stability of the connecting column 17 can be improved through the guide groove 25, and the sealing performance of the connection between the connecting column 17 and the inner wall of the guide groove 25 can be improved through the sealing ring 26 on the inner wall of the guide groove 25, further improving the sealing performance of the piston groove 15.

[0023] When a hot pressing device for investment casting of light alloys is in use, the electro-hydraulic push rod 18 is controlled to work. Through the piston 16 and the connecting column 17, the hot pressing plate 13 at the bottom side of the adjusting plate 14 can be driven to move up and down. The hot pressing operation of investment casting of light alloys is carried out through the mold 12. After the hot pressing is completed, the electro-hydraulic push rod 18 pushes the hot pressing plate 13 to move up and reset. At the same time, the piston 16 moves up in the piston groove 15. Through the air outlet pipe 22, the air in the piston groove 15 can be pressed into the air guide groove 21 and discharged through the small air outlet holes 2 evenly opened on both inner walls of the installation groove 11, further automatically blowing and cooling the mold 12, with a high degree of automation. Through the one-way valves 24 provided inside both the air inlet pipe 23 and the air outlet pipe 22, the air flow inside the air inlet pipe 23 and the air outlet pipe 22 can be controlled. When the piston 16 moves down, the outside air can be drawn into the piston groove 15 through the air inlet pipe 23 for air supplement.

Claims

1. A hot pressing device for investment casting of light alloys, comprising a hot pressing base (1) and a mold (12), wherein a hot pressing plate (13) is movably connected above the mold (12), and is characterized in that, It further includes an air outlet hole (2). A mounting groove (11) is formed in the middle of the upper surface of the hot pressing base (1). The mold (12) is fixedly connected to the inner wall of the bottom end of the mounting groove (11). The air outlet holes (2) are symmetrically formed in the inner walls on both sides of the mounting groove (11). An adjusting plate (14) is fixedly installed at the top end of the hot pressing plate (13). Two connecting columns (17) are vertically and fixedly installed at both ends of the bottom side of the adjusting plate (14). Two piston grooves (15) are vertically formed inside both sides of the hot pressing base (1). A piston (16) is slidably connected inside the piston groove (15). The bottom ends of the two connecting columns (17) are respectively fixedly connected to the middle parts of the upper surfaces of the two pistons (16). An air outlet pipe (22) is penetrated and installed at the upper end of the inner wall of the piston groove (15) close to the mounting groove (11). An air inlet pipe (23) is penetrated and installed at the upper end of the inner wall on the other side of the piston groove (15).

2. The hot pressing device for investment casting of light alloys according to claim 1, wherein: An electro-hydraulic push rod (18) is fixedly connected to the inner wall of the bottom end of the piston groove (15). The telescopic end of the electro-hydraulic push rod (18) is fixedly connected to the middle part of the bottom side of the piston (16).

3. The hot pressing device for investment casting of light alloys according to claim 1, characterized in that: The air outlet end of the air outlet pipe (22) is communicated with a wind guiding groove (21). One-way valves (24) are arranged inside both the air inlet pipe (23) and the air outlet pipe (22).

4. The hot pressing device for investment casting of light alloys according to claim 3, characterized in that: The wind guiding groove (21) is communicated with the air outlet hole (2), and the air outlet hole (2) is aligned with the top end of the mold (12).

5. The hot pressing device for investment casting of light alloys according to claim 1, characterized in that: A guiding groove (25) is penetrated and formed in the inner wall of the top end of the piston groove (15). The connecting column (17) is slidably connected to the guiding groove (25).

6. The hot pressing device for investment casting of light alloys according to claim 5, characterized in that: A sealing ring (26) is adhered to the inner wall of the guiding groove (25). The sealing ring (26) is attached to the outer side of the connecting column (17).

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