Low-pressure casting device for high-strength alloy casting

Abstract

The utility model relates to the technical field of casting, and discloses a high-strength alloy casting low-pressure casting device which comprises a fixing frame, a heat preservation crucible and a casting mold, an air cylinder is fixedly arranged at the top of the fixing frame, the tail end of a piston rod of the air cylinder is fixedly connected with the casting mold, and the heat preservation crucible is located on one side of the casting mold. The bottom of the heat preservation crucible is of a conical structure, a liquid rising pipe is fixedly arranged at the bottom of the heat preservation crucible, the liquid rising pipe is of a J-shaped structure, a containing pipe is arranged at the position, corresponding to the liquid rising pipe, of the bottom of the casting mold, a piston is arranged in the heat preservation crucible, and a piston rod extending out of the heat preservation crucible is fixedly arranged at the top of the piston. A pressing rod making contact with the piston rod is fixedly arranged at the top of the casting mold. The liquid rising pipe of the J-shaped structure is adopted, molten metal in the heat preservation crucible can be pressed into a casting mold, and the phenomenon that the molten metal is wasted is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a low-pressure casting device for high-strength alloy castings. Background Art

[0002] Low-pressure casting machine is a general-purpose equipment for low-pressure casting of aluminum alloys. It can be widely used in the production of aluminum alloy castings in industries such as automobiles, motorcycles, textile machinery, and aerospace.

[0003] Among them, the patent number is CN211052487U, which discloses a low-pressure casting device, including a base, a crucible, a riser, a connecting block and an automatic hydraulic rod, the surface of the base is fixed with a crucible, the upper surface of the base is fixed with a riser, and a slide groove is opened inside the base, the surface of the slide groove is provided with a connecting block, and a rotating shaft is installed on the surface of the connecting block, and a first spring is fixed on the surface of the connecting block, the surface of the rotating shaft is provided with a stop block, and a protective layer is installed on the upper surface of the stop block, and a second spring is fixed on the lower surface of the stop block, a support rod is fixed on the upper surface of the base, and an automatic hydraulic rod is welded to the lower surface of the support rod, and a fixing plate is fixed to the lower end of the automatic hydraulic rod.

[0004] In the above scheme, the molten metal is pressed into the interior of the riser tube by a pressure block, and then pressed into the interior of the mold through the riser tube. However, in actual use, it is found that due to the large gap between the lower end of the riser tube and the bottom of the crucible, it is impossible to ensure that the molten metal is completely pressed into the interior of the mold, resulting in a waste of the molten metal. Therefore, a low-pressure casting device for high-strength alloy castings is proposed. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that the display module is easily damaged. Once damaged, the staff needs to spend a lot of time to disassemble the display module, which affects the maintenance progress. A high-strength alloy casting low-pressure casting device is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A low-pressure casting device for high-strength alloy castings comprises a fixed frame, an insulating crucible and a casting mold, wherein a cylinder is fixedly provided on the top of the fixed frame, and the end of the piston rod of the cylinder is fixedly connected to the casting mold, the insulating crucible is located on one side of the casting mold, the bottom of the insulating crucible adopts a conical structure, and a riser is fixedly provided on the bottom of the insulating crucible, and the riser adopts a J-shaped structure, a receiving tube is provided at the bottom of the casting mold and at a position corresponding to the position of the riser, a piston is provided inside the insulating crucible, a piston rod extending to the outside of the insulating crucible is fixedly provided on the top of the piston, and an elastic mechanism is provided between the piston rod and the top of the insulating crucible, and a pressing rod contacting the piston rod is fixedly provided on the top of the casting mold.

[0008] Preferably, the elastic mechanism comprises a fixing ring and a spring, both of which are arranged on the rod wall of the piston rod, and both ends of the spring are fixedly connected to the fixing ring and the heat-insulating crucible respectively.

[0009] Preferably, a fixing sleeve is fixedly provided on the tank wall of the heat-insulating crucible, and one end of the fixing sleeve is fixedly connected to the side wall of the fixing frame.

[0010] Preferably, the lower end of the containing tube is expanded, and one end of the rising tube is inserted into the lower end of the containing tube.

[0011] Preferably, an inert gas inlet pipe is fixedly provided on the tank wall of the heat-insulating crucible.

[0012] Preferably, the pressing rod is an L-shaped rod.

[0013] Compared with the prior art, the utility model provides a low-pressure casting device for high-strength alloy castings, which has the following beneficial effects:

[0014] 1. The low-pressure casting device for high-strength alloy castings is provided with an insulating crucible and a liquid riser. When the piston and the piston rod are pressed down, the piston presses the molten metal in the insulating crucible into the inside of the liquid riser. Since the liquid riser adopts a J-shaped structure and is connected to the bottom of the insulating crucible, it can ensure that the molten metal in the insulating crucible is pressed into the inside of the containing tube, thereby avoiding the phenomenon of wasting the molten metal.

[0015] 2. The low-pressure casting device for high-strength alloy castings adopts a flaring setting at the lower end of the containing tube so that the upper end of the riser tube can be completely inserted into the lower end of the containing tube, and the riser tube and the containing tube can be sealed and connected to avoid leakage.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model adopts a J-shaped liquid riser to press the molten metal inside the insulation crucible into the casting mold to avoid wasting the molten metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a low-pressure casting device for high-strength alloy castings proposed by the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the connection between the middle liquid lifting pipe and the receiving pipe;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the medium insulation crucible.

[0020] In the figure: 1. fixed frame; 2. insulation crucible; 3. casting mold; 4. cylinder; 5. liquid riser; 6. containing tube; 7. piston; 8. piston rod; 9. pressing rod; 10. fixing ring; 11. spring; 12. fixing sleeve; 13. inert gas inlet pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Example 1

[0024] Reference Figure 1-2, a low-pressure casting device for high-strength alloy castings, comprising a fixed frame 1, an insulating crucible 2 and a casting mold 3, a cylinder 4 is fixedly arranged on the top of the fixed frame 1, the piston rod end of the cylinder 4 is fixedly connected to the casting mold 3, the insulating crucible 2 is located on one side of the casting mold 3, the tank wall of the insulating crucible 2 is fixedly provided with a fixed sleeve 12, one end of the fixed sleeve 12 is fixedly connected to the side wall of the fixed frame 1, so that the casting mold 3 can be installed in the air, the bottom of the insulating crucible 2 adopts a conical structure, and a riser pipe 5 is fixedly arranged on the bottom of the insulating crucible 2, and the riser pipe 5 adopts a J-shaped structure, a receiving pipe 6 is arranged at the bottom of the casting mold 3 and at a position corresponding to the position of the riser pipe 5, the lower end of the receiving pipe 6 adopts a flaring setting, one end of the riser pipe 5 is inserted into the lower end of the receiving pipe 6, so that the riser pipe 5 and the receiving pipe 6 can be sealed and connected, In order to avoid leakage, a piston 7 is provided inside the insulating crucible 2. A piston rod 8 extending to the outside of the insulating crucible 2 is fixedly provided on the top of the piston 7, and an elastic mechanism is provided between the piston rod 8 and the top of the insulating crucible 2. A pressing rod 9 contacting with the piston rod 8 is fixedly provided on the top of the casting mold 3. The pressing rod 9 is an L-shaped rod. When the cylinder 4 is turned on to work, the cylinder 4 extends to drive the casting mold 3 to move downward, so that the pressing rod 9 presses the piston rod 8. The piston rod 8 drives the piston 7 to move downward and presses the molten metal inside the insulating crucible 2 into the inside of the riser tube 5. Since the riser tube 5 adopts a J-shaped structure, it can ensure that the molten metal inside the insulating crucible 2 is pressed into the inside of the receiving tube 6, avoiding the phenomenon of wasting molten metal. Finally, the molten metal enters the inside of the casting mold 3 for casting and shaping.

[0025] Example 2

[0026] Reference Figure 1 and 3 The elastic mechanism includes a fixing ring 10 and a spring 11, both of which are arranged on the rod wall of the piston rod 8, and the two ends of the spring 11 are fixedly connected to the fixing ring 10 and the insulating crucible 2 respectively. When the cylinder 4 retracts and drives the pressing rod 9 to move upward, the pressing rod 9 is separated from the piston rod 8. At this time, the spring 11 applies an upward elastic force to the fixing ring 10, so that the piston 7 can move upward and reset inside the insulating crucible 2.

[0027] Example 3

[0028] Reference Figure 3 An inert gas inlet pipe 13 is fixedly provided on the tank wall of the heat-insulating crucible 2. The inert gas inlet pipe 13 can discharge the inert gas into the interior of the heat-insulating crucible 2 to play a protective role.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-pressure casting device for high-strength alloy castings, comprising a fixed frame (1), a heat-insulating crucible (2) and a casting mold (3), characterized in that: A cylinder (4) is fixedly provided on the top of the fixed frame (1), and the end of the piston rod of the cylinder (4) is fixedly connected to the casting mold (3). The insulating crucible (2) is located on one side of the casting mold (3). The bottom of the insulating crucible (2) adopts a conical structure, and a liquid riser (5) is fixedly provided on the bottom of the insulating crucible (2), and the liquid riser (5) adopts a J-shaped structure. A receiving tube (6) is provided at the bottom of the casting mold (3) and at a position corresponding to the position of the liquid riser (5). A piston (7) is provided inside the insulating crucible (2), and a piston rod (8) extending to the outside of the insulating crucible (2) is fixedly provided on the top of the piston (7), and an elastic mechanism is provided between the piston rod (8) and the top of the insulating crucible (2). A pressing rod (9) contacting with the piston rod (8) is fixedly provided on the top of the casting mold (3).

2. A low-pressure casting device for high-strength alloy castings according to claim 1, characterized in that: The elastic mechanism comprises a fixing ring (10) and a spring (11), wherein the fixing ring (10) and the spring (11) are both arranged on the rod wall of the piston rod (8), and the two ends of the spring (11) are respectively fixedly connected to the fixing ring (10) and the heat-insulating crucible (2).

3. A low-pressure casting device for high-strength alloy castings according to claim 1, characterized in that: A fixing sleeve (12) is fixedly provided on the tank wall of the heat-insulating crucible (2), and one end of the fixing sleeve (12) is fixedly connected to the side wall of the fixing frame (1).

4. A low-pressure casting device for high-strength alloy castings according to claim 1, characterized in that: The lower end of the containing tube (6) is expanded, and one end of the liquid riser (5) is inserted into the lower end of the containing tube (6).

5. A low-pressure casting device for high-strength alloy castings according to claim 1, characterized in that: An inert gas inlet pipe (13) is fixedly provided on the tank wall of the heat-insulating crucible (2).

6. A low-pressure casting device for high-strength alloy castings according to claim 1, characterized in that: The pressing rod (9) is an L-shaped rod.

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