Casting mold capable of preventing casting defects

Abstract

The utility model discloses a casting die capable of preventing casting defects, which belongs to the field of casting and comprises a casting die body, a low-pressure die-casting device is arranged below the casting die body, molten metal in the low-pressure die-casting device is connected with the casting die body through a liquid feeding pipeline, and a liquid inlet of the liquid feeding pipeline is provided with a slag prevention device. And a slag removal baffle is arranged between the slag prevention device and the liquid inlet of the liquid feeding pipeline. Compared with the prior art, the device has the advantages that slag in molten metal is subjected to primary isolation (the slag is light in weight and can float on the molten metal) through the sawtooth-shaped slag stopping block in the multidirectional connecting pipeline, and then the molten metal is subjected to secondary purification through the slag removing baffle in the center of the multidirectional connecting pipeline; the metal solution entering the liquid feeding pipeline is clean and free of impurities, and the safety quality of products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of casting, in particular to a casting mould for preventing casting defects. Background Art

[0002] In the field of mold forming, for some metal products with complex internal structures, casting molds are usually used to complete the casting. In order to improve the efficiency of casting, for some commonly used aluminum alloy and magnesium alloy products, workers often use low-pressure casting to cast them.

[0003] Existing low-pressure casting usually involves pouring the molten metal into the low-pressure die-casting device through a pouring port on the side of the low-pressure die-casting device. After the low-pressure die-casting device is sealed, the pressure in the low-pressure die-casting device is increased through the low-pressure device of the low-pressure die-casting device, so that the molten metal is squeezed into the casting mold through the upper liquid pipe. After the injection is completed and the mold product cools down, the high pressure inside the low-pressure die-casting device is released, and the molten metal falls back to the metal storage area of the low-pressure die-casting device due to gravity. Finally, the casting mold is opened and the finished product is taken out.

[0004] Although the finished products produced by this low-pressure casting method have the characteristics of high density, good integrity and high surface finish, slag in the molten metal often mixes into them during die casting, causing damage to the product's appearance and structure, or clogging the liquid supply pipe. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing casting mold cannot effectively filter slag.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: a casting mold for preventing casting defects, comprising a casting mold body, a low-pressure die-casting device is provided under the casting mold body, the molten metal in the low-pressure die-casting device is connected to the casting mold body through an upper liquid pipe, the liquid inlet of the upper liquid pipe is provided with a slag prevention device, and a slag removal baffle is provided between the slag prevention device and the liquid inlet of the upper liquid pipe.

[0007] As an improvement, the casting mold body includes a male mold and a female mold that are opposite to each other, the male mold is connected to the female mold through a shaft, and the upper liquid pipeline passes through the male mold.

[0008] As an improvement, the low-pressure die-casting device includes a quartz pot for storing molten metal, a sealing box for sealing the quartz pot, and a low-pressure device for providing a low-pressure environment. A molten metal inlet pipe is provided on one side of the quartz pot, and the molten metal inlet pipe passes through the sealing box body. A corresponding sealing cover is provided at the inlet end of the molten metal inlet pipe. The low-pressure device is connected to the sealing box through a low-pressure pipe. A low-pressure port connected to the low-pressure pipe is provided on one side of the sealing box. A pressure relief valve corresponding to the low-pressure device is provided on one side of the sealing box, and the pressure relief valve passes through the side wall of the sealing box.

[0009] As an improvement, the sealing box is a one-way open box, a sealing gasket is provided between the punch and the open end of the sealing box, the sealing box is connected to the bottom surface of the punch through a bolt structure, and the pressure relief valve and the molten metal inlet pipe are connected to the sealing box through high-temperature resistant glue.

[0010] As an improvement, the slag prevention device includes a multi-directional connecting pipe located in the quartz pot, a serrated slag blocking block located above the inner wall of the pipe branch, and a polymer connection through hole located on one side of the connection end of the multi-directional connecting pipe, and the slag removal baffle is located inside the polymer connection through hole.

[0011] As an improvement, the upper liquid pipeline is connected to the polymer connection through hole through a bolt structure.

[0012] The advantages of the present invention compared with the prior art are that: the device isolates the slag in the molten metal once through the serrated slag blocking block inside the multi-directional connecting pipe (the slag is light in weight and will float on the molten metal), and then performs a secondary purification on the molten metal through the slag removal baffle in the center of the multi-directional connecting pipe, so that the metal solution entering the upper liquid pipe is clean and free of impurities, thereby ensuring the safety and quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a general structural diagram of a casting mold for preventing casting defects.

[0014] Figure 2 The utility model is a sectional view of a casting mold body of a casting mold for preventing casting defects.

[0015] Figure 3 The utility model is a structural diagram of a low-pressure die-casting device for a casting mold for preventing casting defects.

[0016] Figure 4 The utility model is an exploded view of a slag prevention device of a casting mold for preventing casting defects.

[0017] Figure 5 The utility model is a cross-sectional view of a slag prevention device of a casting mold for preventing casting defects.

[0018] As shown in the figure: 1. Casting mold; 11. Punch; 12. Die; 13. Sealing gasket; 2. Low-pressure die-casting device; 21. Quartz pot; 211. Liquid metal inlet pipe; 212. Sealing cover; 22. Sealing box; 23. Low-pressure device; 231. Low-pressure port; 24. Pressure relief valve; 3. Upper liquid pipeline; 4. Slag prevention device; 41. Multi-directional connecting pipeline; 42. Serrated slag block; 43. Polymeric connecting through hole; 5. Slag removal baffle. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] As the instruction manual Figure 1 、 4 As shown in , 5, it includes a casting mold 1, a low-pressure die-casting device 2 is provided below the casting mold 1, and the molten metal in the low-pressure die-casting device 2 is connected to the casting mold 1 through an upper liquid pipe 3, and is characterized in that: the liquid inlet of the upper liquid pipe 3 is provided with a slag prevention device 4, and a slag removal baffle 5 is provided between the slag prevention device 4 and the liquid inlet of the upper liquid pipe 3, the slag prevention device 4 includes a multi-directional connecting pipe 41 located in the quartz pot 21, a serrated slag blocking block 42 located above the inner wall of the pipe branch, and a polymer connection through hole 43 located on one side of the connection end of the multi-directional connecting pipe 41, the slag removal baffle 5 is located inside the polymer connection through hole 43, the upper liquid pipe 3 is connected to the polymer connection through hole 43 by a bolt structure, and the slag is isolated by the serrated slag blocking block 42 and the slag removal baffle 5.

[0021] As the instruction manual Figure 1 、 2As shown in Figure 3, the casting mold body 1 includes a punch 11 and a die 12 opposite to each other, the punch 11 is connected to the die 12 by a shaft, the upper liquid pipeline 3 passes through the punch 11, and the low-pressure die-casting device 2 includes a quartz pot 21 for storing molten metal, a sealing box 22 for sealing the quartz pot 21, and a low-pressure device 23 for providing a low-pressure environment. A molten metal inlet pipe 211 is provided on one side of the quartz pot 21, the molten metal inlet pipe 211 passes through the sealing box 22, and a corresponding sealing cover 212 is provided at the inlet end of the molten metal inlet pipe 211. The low-pressure device 23 is connected to the sealing box 22 through a low-pressure pipe. A low-pressure port 231 connected to a low-pressure pipeline is provided on one side of the sealing box 22. A pressure relief valve 24 corresponding to the low-pressure device 23 is provided on one side of the sealing box 22. The pressure relief valve 24 passes through the side wall of the sealing box 22. The sealing box 22 is a one-way open box. A sealing gasket 13 is provided between the punch 11 and the open end of the sealing box 22. The sealing box 22 is connected to the bottom surface of the punch 11 through a bolt structure. The pressure relief valve 24 and the molten metal inlet pipe 211 are connected to the sealing box 22 through high-temperature resistant glue. The molten metal in the quartz pot 21 is squeezed into the cavity between the punch 11 and the die 12 through the low-pressure device 23.

[0022] During the specific implementation of the present invention, the output port of the low-pressure device 23 is connected to the low-pressure port 231 through a low-pressure pipe; the pressure relief valve 24 is inserted into the through hole on the side wall of the sealing box 22 and sealed with high-temperature resistant glue; the molten metal inlet pipe 211 provided on one side of the quartz pot 21 is passed through the pipe through hole of the sealing box 22, and the two are sealed and connected by high-temperature resistant glue, and the quartz pot 21 is located in the sealing box 22; a sealing cover 212 is placed at the inlet of the molten metal inlet pipe 211; a degassing device 210 is placed in the polymer connection through hole 43 in the center of the multi-directional connecting pipe 41. Slag baffle 5, screw the threaded column on the bottom of the upper liquid pipeline 3 into the screw hole on the inner wall of the polymer connecting through hole 43 for fixation, place the slag prevention device 4 in the quartz pot 21, place the sealing gasket 13 on the open end of the sealing box 22, place the fixing plate under the punch 11 on the open end of the sealing box 22, align the threaded holes of the two, and screw in the screws for fixation. At this time, the upper column end of the upper liquid pipeline 3 passes through the through hole in the center of the punch 11 and is parallel to the plane of the punch 11; pass the connecting hole of the die 12 through the connecting columns around the punch 11, and close the die 12 and the punch 11.

[0023] When in use, open the sealing cover 212, pour the molten metal from the molten metal inlet pipe 211 into the quartz pot 21, close the sealing cover 212 to seal the sealing box 22; open the low-pressure device 23, and add the inert gas from the low-pressure port 231 to the sealing box 22. As the pressure in the sealing box 22 continues to increase, the molten metal in the quartz pot 21 flows from the multi-directional connecting pipe 41 into the central polymer connection through hole 43. During the inflow process, the slag passes through the zigzag slag blocking block 42 in the branch of the multi-directional connecting pipe 41 for a Filtration: When the metal solution flows into the upper liquid pipe 3 from the polymerization connecting through hole 43, it will pass through the slag removal baffle 5 for secondary filtration, blocking the slag in the quartz pot 21, and the clean metal solution will flow from the upper liquid pipe 3 into the cavity between the punch 11 and the die 12. After the mold is cooled, the low-pressure device 23 is closed and the pressure relief valve 24 is opened. The metal solution falls back into the upper liquid pipe 3 under the action of gravity, and then the pressure relief valve 24 is closed; open the casting mold 1, take out the product, and then close the casting mold 1 to restart injection.

[0024] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A casting mold for preventing casting defects, comprising a casting mold body (1), a low-pressure die-casting device (2) being provided below the casting mold body (1), the molten metal in the low-pressure die-casting device (2) being connected to the casting mold body (1) via an upper liquid pipe (3), and characterized in that: The liquid inlet of the upper liquid pipeline (3) is provided with a slag prevention device (4), and a slag removal baffle (5) is provided between the slag prevention device (4) and the liquid inlet of the upper liquid pipeline (3).

2. A casting mold for preventing casting defects according to claim 1, characterized in that: The casting mold body (1) comprises a male mold (11) and a female mold (12) which are opposed to each other, the male mold (11) is connected to the female mold (12) via a shaft, and the upper liquid pipeline (3) passes through the male mold (11).

3. A casting mold for preventing casting defects according to claim 2, characterized in that: The low-pressure die-casting device (2) comprises a quartz pot (21) for storing molten metal, a sealing box (22) for sealing the quartz pot (21), and a low-pressure device (23) for providing a low-pressure environment. A molten metal inlet pipe (211) is provided on one side of the quartz pot (21), and the molten metal inlet pipe (211) passes through the body of the sealing box (22). A corresponding sealing cover (212) is provided at the inlet end of the molten metal inlet pipe (211). The low-pressure device (23) is connected to the sealing box (22) through a low-pressure pipe. A low-pressure port (231) connected to the low-pressure pipe is provided on one side of the sealing box (22). A pressure relief valve (24) corresponding to the low-pressure device (23) is provided on one side of the sealing box (22), and the pressure relief valve (24) passes through the side wall of the sealing box (22).

4. A casting mold for preventing casting defects according to claim 3, characterized in that: The sealing box (22) is a one-way open box, a sealing gasket (13) is provided between the punch (11) and the open end of the sealing box (22), the sealing box (22) is connected to the bottom surface of the punch (11) through a bolt structure, and the pressure relief valve (24) and the molten metal inlet pipe (211) are both connected to the sealing box (22) through high-temperature resistant glue.

5. The casting mold for preventing casting defects according to claim 3, characterized in that: The slag prevention device (4) comprises a multi-directional connecting pipe (41) located in the quartz pot (21), a sawtooth slag blocking block (42) located above the inner wall of the pipe branch, and a polymer connection through hole (43) located on one side of the connection end of the multi-directional connecting pipe (41), and the slag removal baffle (5) is located inside the polymer connection through hole (43).

6. A casting mold for preventing casting defects according to claim 5, characterized in that: The upper liquid pipeline (3) is connected to the polymer connection through hole (43) via a bolt structure.

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