Metal mold casting mold

Abstract

The utility model relates to the technical field of casting, and particularly discloses a metal mold casting mold which comprises an upper mold unit, a bottom mold unit, a left mold unit, a right mold unit, a pouring structure, a loose piece, an iron core, a water inlet pipe and a water outlet pipe, the left mold unit is connected with the bottom mold unit in a sliding mode, and the right mold unit is connected with the bottom mold unit in a sliding mode and located at the upper end of the bottom mold unit. The left mold unit and the right mold unit are matched with each other, the two sets of pouring structures are embedded between the left mold unit and the right mold unit respectively, the upper mold unit is arranged at the upper ends of the left mold unit and the right mold unit, the movable block is embedded in the left mold unit, the iron core is embedded in the left mold unit, the water inlet pipe is communicated with the iron core, and the water outlet pipe is communicated with the iron core. The production efficiency is high, size machining is accurate, material consumption and energy consumption are small, and produced castings are good in inner surface quality and outer surface quality, free of impurities, air holes, shrinkage porosity and shrinkage cavity defects, compact in internal tissue and high in process yield.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and in particular to a metal casting mold. Background Technology

[0002] Currently, aluminum alloy crank box castings are one of the important components in high-voltage electrical low-voltage 252KV products. Its outer contour dimensions are φ508mm×509mm, with a uniform wall thickness of 15mm and a maximum thickness of 60mm. After machining, the net weight is 39kg. This crank box part has high requirements for the surface precision of the shaft hole, requiring that there be no visible pinholes or shrinkage defects on the surface.

[0003] However, in the existing technology, the shaft hole area of ​​the casting is thick and the inner diameter is small. During the solidification process of the casting, a large amount of latent heat is released and cannot be effectively dissipated, resulting in a small degree of supercooling required for the solidification of the casting, which easily leads to shrinkage porosity and shrinkage defects. Utility Model Content

[0004] The purpose of this utility model is to provide a metal casting mold that solves the technical problems in the prior art, such as the large thickness of the shaft hole area of ​​the casting, the small inner diameter, the large amount of latent heat released during the solidification process of the casting that cannot be effectively dissipated, resulting in a small supercooling degree required for the solidification of the casting, and the easy generation of shrinkage porosity and shrinkage defects.

[0005] To achieve the above objectives, this utility model employs a metal casting mold, comprising an upper mold unit, a bottom mold unit, a left mold unit, a right mold unit, a casting structure, a movable block, an iron core, a water inlet pipe, and a water outlet pipe. The left mold unit is slidably connected to the bottom mold unit and located at the upper end of the bottom mold unit. The right mold unit is slidably connected to the bottom mold unit and located at the upper end of the bottom mold unit. The left mold unit and the right mold unit are mutually adapted. There are two sets of casting structures, which are respectively embedded between the left mold unit and the right mold unit. The upper mold unit is located at the upper end of the left mold unit and the right mold unit, and is mutually adapted to both the left mold unit and the right mold unit. The movable block is embedded inside the left mold unit. The iron core is embedded inside the left mold unit. The water inlet pipe is connected to the iron core, and the water outlet pipe is connected to the iron core.

[0006] The bottom mold unit includes a metal bottom mold and a sprue sleeve. There are two sets of sprue sleeves, which are respectively disposed on the upper end of the metal bottom mold, and the two sets of sprue sleeves are adapted to the corresponding casting structure.

[0007] The left mold unit includes a metal left mold and a left mold connecting frame. The left mold connecting frame is fixedly connected to the metal left mold and is located on one side of the metal left mold.

[0008] The right mold unit includes a metal right mold and a right mold connecting frame. The right mold connecting frame is fixedly connected to the metal right mold and is located on one side of the metal right mold.

[0009] The upper mold unit includes a metal upper mold and an upper mold connecting frame. The upper mold connecting frame is fixedly connected to the metal upper mold and is located at the upper end of the metal upper mold.

[0010] The beneficial effects of this utility model of a metal casting mold are as follows: the shaft hole is rapidly cooled by the cooperation of the water inlet pipe, the water outlet pipe and the iron core, which effectively prevents defects from occurring. The operation is simple, requires few personnel, has high production efficiency, precise dimensional processing, low material and energy consumption, and is convenient and quick to clean and grind. Moreover, the castings produced have good inner and outer surface quality, free from inclusions, porosity, shrinkage cavities and shrinkage defects, and have a dense internal structure, resulting in a high process yield. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a metal casting mold according to this utility model.

[0013] Figure 2 This is a schematic diagram of the iron core structure of this utility model.

[0014] 1- Casting structure, 2- Loose block, 3- Iron core, 4- Inlet pipe, 5- Outlet pipe, 6- Metal bottom mold, 7- Sprue sleeve, 8- Metal left mold, 9- Left mold connecting frame, 10- Metal right mold, 11- Right mold connecting frame, 12- Metal upper mold, 13- Upper mold connecting frame. Detailed Implementation

[0015] Please see Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of a metal casting mold according to the present invention; Figure 2 This is a schematic diagram of the iron core structure of this utility model.

[0016] This utility model provides a metal casting mold, including an upper mold unit, a bottom mold unit, a left mold unit, a right mold unit, a casting structure 1, a movable block 2, an iron core 3, a water inlet pipe 4, and a water outlet pipe 5. The left mold unit is slidably connected to the bottom mold unit and located at the upper end of the bottom mold unit. The right mold unit is slidably connected to the bottom mold unit and located at the upper end of the bottom mold unit. The left mold unit and the right mold unit are mutually adapted. There are two sets of casting structures 1, which are respectively embedded between the left mold unit and the right mold unit. The upper mold unit is located at the upper end of the left mold unit and the right mold unit, and the upper mold unit is mutually adapted to the left mold unit and the right mold unit. The movable block 2 is embedded inside the left mold unit. The iron core 3 is embedded inside the left mold unit. The water inlet pipe 4 is connected to the iron core 3, and the water outlet pipe 5 is connected to the iron core 3.

[0017] In this embodiment, the upper mold unit, the bottom mold unit, the left mold unit, and the right mold unit are baked to 280°C and then coated with zinc oxide paint. The upper mold unit, the bottom mold unit, the left mold unit, and the right mold unit are then assembled and closed. After closure, the molten aluminum is pressurized in a low-pressure furnace and fed into the bottom mold unit through a double-lift pipe. The molten aluminum is filtered in the bottom mold unit to remove inclusions. It then slowly flows through the casting structure 1 into the casting cavity. The molten aluminum is cooled by the iron core 3, where cooling water is circulated and pumped in through the water inlet pipe 4 and the water outlet pipe 5 to achieve water cooling, thereby improving the casting shaft. The solidification speed inside the hole makes the structure more compact, thus avoiding shrinkage porosity at the shaft hole position of the casting. Due to the complex structure of the casting, the casting is opened by the movable block 2 and poured using a double-lift liquid pipe, which can ensure that the aluminum liquid fills the cavity in a stable manner. Since the upper mold unit is equipped with vent plugs on the upper end face of the casting and the top of the pouring structure 1, the gas can be discharged smoothly, thereby reducing the generation of porosity and slag inclusion defects, improving the quality of the casting product. The operation is simple, requires few personnel, has high production efficiency, precise dimensional machining, low material and energy consumption, and is convenient and quick to clean and grind. Moreover, the casting produced has good internal and external surface quality, free from inclusions, porosity, shrinkage porosity and shrinkage cavity defects, and has a dense internal structure, resulting in a high process yield.

[0018] Furthermore, the bottom mold unit includes a metal bottom mold 6 and a sprue sleeve 7. There are two sets of sprue sleeves 7, which are respectively disposed on the upper end of the metal bottom mold 6, and the two sets of sprue sleeves 7 are adapted to the corresponding gating structure 1.

[0019] In this embodiment, molten aluminum enters the gating sleeve 7 through a double-lifting pipe. The molten aluminum is filtered through a filter in the gating sleeve 7 to remove inclusions. Then, it is slowly poured through the casting structure 1 and enters the casting cavity.

[0020] Furthermore, the left mold unit includes a metal left mold 8 and a left mold connecting frame 9, the left mold connecting frame 9 being fixedly connected to the metal left mold 8 and located on one side of the metal left mold 8.

[0021] In this embodiment, the metal left mold 8 is connected by the left mold connecting frame 9, which facilitates installation, fixation and gripping during the mold closing process. At the same time, the left mold connecting frame 9 can serve as the installation reference for the metal left mold 8, ensuring assembly accuracy, maintaining the structural stability of the metal left mold 8 and preventing deformation or damage to the metal left mold 8.

[0022] Furthermore, the right mold unit includes a metal right mold 10 and a right mold connecting frame 11, the right mold connecting frame 11 being fixedly connected to the metal right mold 10 and located on one side of the metal right mold 10.

[0023] In this embodiment, the metal right mold 10 is connected by the right mold connecting frame 11, which facilitates installation, fixation and gripping during the mold closing process. At the same time, the right mold connecting frame 11 can serve as the installation reference for the metal right mold 10, ensuring assembly accuracy, maintaining the structural stability of the metal right mold 10 and preventing deformation or damage to the metal right mold 10.

[0024] Furthermore, the upper mold unit includes a metal upper mold 12 and an upper mold connecting frame 13, the upper mold connecting frame 13 being fixedly connected to the metal upper mold 12 and located at the upper end of the metal upper mold 12.

[0025] In this embodiment, the upper mold connecting frame 13 connects to the metal upper mold 12, which facilitates installation, fixation and gripping during the mold closing process. At the same time, the upper mold connecting frame 13 can serve as the installation reference for the metal upper mold 12, ensuring assembly accuracy, maintaining the structural stability of the metal upper mold 12 and preventing deformation or damage to the metal upper mold 12.

[0026] In this invention, the upper metal mold 12, the left metal mold 8, the right metal mold 10, and the bottom metal mold 6 are all made of metal. Using metal mold casting allows for the production of high-density, inclusion-free, and porosity-free metal castings. The castings possess excellent physical and mechanical properties, meeting the requirements of high strength and high precision. Metal mold casting uses metal molds as molds, enabling reusability and mass production. The production process is highly repeatable, allowing for large-scale production and reducing unit costs. Metal mold casting can produce high-precision castings, reducing workpiece dimensional tolerances, minimizing subsequent machining, improving production efficiency, achieving good surface finish, resulting in high-quality castings with attractive appearances, reducing surface treatment processes and costs, and providing good shape adaptability. The metal molds have a long service life and can be reused multiple times. During mass production, mold costs can be effectively distributed, reducing the production cost per casting. Castings produced by metal mold casting exhibit good dimensional stability during heat treatment, are less prone to deformation or dimensional deviations, and ensure dimensional accuracy during subsequent processing and use.

[0027] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A metal mold for casting, characterized in that, The system includes an upper mold unit, a bottom mold unit, a left mold unit, a right mold unit, a casting structure, a movable block, an iron core, a water inlet pipe, and a water outlet pipe. The left mold unit is slidably connected to the bottom mold unit and located at the upper end of the bottom mold unit. The right mold unit is also slidably connected to the bottom mold unit and located at the upper end of the bottom mold unit. The left and right mold units are mutually compatible. There are two sets of casting structures, which are respectively embedded between the left and right mold units. The upper mold unit is located at the upper end of the left and right mold units and is mutually compatible with both the left and right mold units. The movable block is embedded inside the left mold unit. The iron core is embedded inside the left mold unit. The water inlet pipe is connected to the iron core, and the water outlet pipe is connected to the iron core.

2. The metal mold casting mold as described in claim 1, characterized in that, The bottom mold unit includes a metal bottom mold and a sprue sleeve. There are two sets of sprue sleeves, which are respectively disposed on the upper end of the metal bottom mold, and the two sets of sprue sleeves are adapted to the corresponding casting structure.

3. A metal mold for casting as described in claim 2, characterized in that, The left mold unit includes a metal left mold and a left mold connecting frame. The left mold connecting frame is fixedly connected to the metal left mold and is located on one side of the metal left mold.

4. A metal mold for casting as described in claim 3, characterized in that, The right mold unit includes a metal right mold and a right mold connecting frame. The right mold connecting frame is fixedly connected to the metal right mold and is located on one side of the metal right mold.

5. A metal mold casting mold as described in claim 4, characterized in that, The upper mold unit includes a metal upper mold and an upper mold connecting frame. The upper mold connecting frame is fixedly connected to the metal upper mold and is located at the upper end of the metal upper mold.

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