CN-121669888-B - High-precision magnesium alloy die casting die device

Abstract

The application relates to the technical field of die casting production and manufacturing of metal parts, in particular to a high-precision magnesium alloy die casting die device. The die comprises a die mechanism, a core pulling assembly, an overflow discharging system and a liquid pouring channel, wherein the die mechanism comprises a first die assembly, a second die assembly and a feeding mechanism, a plurality of abdicating ports are formed in the periphery of the first die assembly and the periphery of the second die assembly, a liquid pouring channel and a cavity are formed in the first die assembly and the second die assembly, the feeding mechanism comprises a feeding cylinder and a flow dividing cone, the core is positioned in the cavity when the die is assembled, the core pulling assembly is arranged corresponding to the core, the overflow discharging system comprises an overflow groove, an exhaust channel and an exhaust mechanism, the liquid pouring channel comprises a first liquid pouring channel and a second liquid pouring channel, the first liquid pouring channel is communicated with a tail cavity of a metal part, and the second liquid pouring channel is communicated with a head cavity of the metal part. The die-cast metal part of the die device has high density and good surface finish, meets the application scene of high quality requirements, and can realize the ultra-light weight target especially in the low-altitude economic field, such as eVTOL, unmanned aerial vehicle and other aircrafts.

Inventors

• TAN YANGCHUN

Assignees

• 佛山镁利好自行车配件有限公司

Dates

Publication Date

20260512

Application Date

20260204

Claims (5)

1. 1. The die mechanism is provided with X, Y and a Z axis along the length, width and thickness directions, and comprises a first die assembly, a second die assembly and a feeding mechanism, wherein a plurality of abdication ports are formed in the peripheral sides of the first die assembly and the second die assembly, a liquid pouring channel and a cavity are formed in the first die assembly and the second die assembly, one end of the liquid pouring channel is communicated with the feeding mechanism, the other end of the liquid pouring channel is communicated with the cavity, and the feeding mechanism comprises a feeding cylinder and a diversion cone; the core pulling assembly comprises a fixing frame connected with the core and a driving device connected with the fixing frame, the core pulling assembly is arranged corresponding to the core, a metal part to be die-cast comprises a head part, a main body part and a tail part, the metal part also comprises a main cavity penetrating through the main body part and the tail part, the whole metal part is long-strip-shaped, an overflow system comprises an overflow groove, an exhaust channel and an exhaust mechanism, the overflow groove is communicated with the cavity, the overflow groove comprises a slag ladle groove and an overflow sub-groove, the slag ladle groove and the overflow sub-groove are respectively arranged at two sides of the core, the exhaust channel is communicated with the slag ladle groove, the exhaust mechanism is arranged at a yielding port and is communicated with the exhaust channel, the core pulling assembly is characterized in that the liquid runner comprises a first liquid runner and a second liquid runner, the first liquid runner is communicated with the tail cavity of the metal part, the second liquid runner is communicated with the head cavity of the metal part, the core comprises a main core and a sub-core, the main core corresponds to the main cavity of the metal part, the sub-core corresponds to the head and/or the tail structure of the metal part, the core pulling assembly comprises the main core pulling assembly and the sub-core pulling assembly corresponds to the main core, the method comprises the steps of setting a sub-core corresponding to a sub-core, defining one end, connected with a main core pulling assembly, of the main core as a main core end, setting a first liquid pouring channel comprising an extending liquid pouring channel, wherein the extending liquid pouring channel is arranged at one side, close to the main core pulling assembly, of the main core end in an offset mode, the extending liquid pouring channel direction is matched with the shape of the main core end, the head of a metal part further comprises a first through groove, the sub-core comprises a first sub-core and a second sub-core, which are matched with the first through groove, the first sub-core and the second sub-core are arranged along the Y axis direction, the first sub-core is arranged at one side of a feeding cylinder, the sub-core comprises a first sub-core pulling assembly and a second sub-core pulling assembly, the first and the second sub-core are respectively arranged corresponding to the first and second sub-core, one end, connected with the first sub-core is the first sub-core end, the head area corresponding to the first sub-core end is the first head cavity end, the second liquid pouring channel is communicated with the first head cavity end, the feeding cylinder is arranged at one side of the cavity, the lower bottom of the feeding cylinder is provided with a first discharging hole and a second discharging hole, the diversion cone is arranged at one side, the second flow channel is provided with a first discharging hole and a second discharging hole is respectively, the diversion cone is arranged at the same with the R1 and the second flow channel is communicated with the second discharging hole is respectively, the second discharging hole is communicated with the first discharging hole is 2 and the second discharging hole is respectively, the R1 and the second flow channel is communicated with the discharging hole is 2, the second discharging hole is respectively, the discharging hole is 2, the discharging hole is respectively, the corresponding discharging hole and the discharging hole is the discharging cavity is 2 and the discharging cavity is the discharging cavity and the head and the discharging cavity and the liquid.
2. 2. The high-precision magnesium alloy die casting die device according to claim 1, wherein the exhaust mechanism and the feeding cylinder are respectively arranged on two sides of the core, the overflow sub-groove and the feeding cylinder are arranged on the same side of the core, the slag ladle groove comprises a plurality of slag ladle grooves, wherein the slag ladle grooves near the tail area are converged into a first exhaust channel, the slag ladle grooves near the head area are converged into a second exhaust channel, and the first exhaust channel and the second exhaust channel are converged into the exhaust mechanism.
3. 3. The high-precision magnesium alloy die casting mold apparatus according to claim 1, further comprising a pre-ejection mechanism configured to act on the die-casting metal part to pre-separate it from the core when the die is opened.
4. 4. A high-precision magnesium alloy die casting mold apparatus as set forth in claim 3 wherein the pre-ejection mechanism comprises a pre-ejection member having a pre-ejection surface and a junction surface, the pre-ejection member being disposed on the first mold assembly, the junction member being configured to be force-transmittable to the body core, the pre-ejection surface pushing against the junction surface upon opening of the mold mechanism.
5. 5. The high-precision magnesium alloy die casting die device according to claim 1, wherein the first die assembly and the second die assembly are respectively provided with a temperature control system, and the temperature control systems are used for controlling the temperature of the die assemblies.

Description

High-precision magnesium alloy die casting die device Technical Field The application relates to the technical field of die casting production and manufacturing of metal parts, in particular to a high-precision magnesium alloy die casting die device. Background Die casting is a metal casting process, and a die casting die plays an important role in a plurality of industrial fields as key process equipment for pressure casting in manufacturing industry. The die casting is characterized in that a die cavity of a die is filled with metal raw materials at a high speed by utilizing high pressure, molten metal or alloy is injected into the die for cooling and solidifying, and a die casting with high precision, high strength and high wear resistance can be manufactured by the die casting process, so that the die casting is widely applied to the fields of automobiles, motorcycles, electronics, household appliances and the like. However, among the metal die casting, magnesium alloy die casting has been widely used and paid attention to for its excellent light weight, shock absorbing and green recyclability, and has been extended as a key material for light weight in the fields of aerospace, automobiles, etc. Particularly in the low-altitude economic field, such as eVTOL, unmanned aerial vehicle and other aircrafts, the weight reduction demand in the industrialization process of the field is particularly urgent, and the existing aluminum alloy structural member is difficult to meet the ultra-lightweight target. However, magnesium alloy die casting has higher process requirements than metal die casting materials such as aluminum alloys due to the active chemical properties of magnesium. Particularly, the magnesium alloy has extremely strong affinity with oxygen in a molten state, is easy to oxidize, and is easy to cause the problems of loose, porous and cold insulation of the magnesium alloy die-casting part in the turbulent flow gas rolling in the die-casting process, thereby influencing the performance of the metal part. Especially for magnesium alloy metal parts with special shapes, such as metal parts with longer size, the common die casting process is easy to generate turbulent flow gas coiling, insufficient uniformity of metal liquid temperature distribution and other technical problems, so that the metal parts are easy to generate quality problems of cold insulation, shrinkage cavity, unsmooth appearance, insufficient compactness and the like, the production and manufacturing efficiency is low, and the application scene of the product is not met. Disclosure of Invention In order to improve the product quality in the aspects of product compactness, surface finish and the like of magnesium alloy die-casting metal parts, the application provides the high-precision magnesium alloy high-pressure die-casting die device which can effectively avoid turbulent flow and gas coiling of molten metal, and simultaneously improve the temperature uniformity of the molten metal and the production quality and efficiency of the magnesium alloy die-casting parts. The application adopts the following technical scheme: A high-precision magnesium alloy die casting die device comprises a die mechanism, a discharge overflow system, a slag ladle and an overflow sub-tank, wherein the die mechanism is provided with X, Y and a Z axis along the length, width and thickness directions, the first die assembly and the second die assembly are provided with a plurality of abdications ports and cavities, one end of the liquid runner is communicated with the feed mechanism, the other end of the liquid runner is communicated with the cavities, the feed mechanism comprises a feed cylinder and a diversion cone, a core is positioned in the cavities when the first die assembly and the second die assembly are assembled, a core pulling assembly comprises a fixing frame connected with the core and a driving device connected with the fixing frame, the core pulling assembly is correspondingly arranged with the core, a metal part to be die-cast comprises a head part, a main body part and a tail part, the metal part also comprises a main cavity penetrating through the main body part and the tail part, the overflow system comprises an overflow tank, an exhaust channel and an exhaust mechanism, the overflow tank is communicated with the cavities, the slag ladle tank and the overflow sub-tank are respectively arranged at two sides of the core, the exhaust channel is communicated with the slag ladle tank, the exhaust mechanism is arranged at the abdications ports and is communicated with the exhaust channel, the exhaust channel comprises a first liquid runner and a second liquid runner, and a second liquid runner is communicated with the first liquid runner, and a first liquid runner is communicated with the metal cavity. Optionally, the feed cylinder sets up in one side of die cavity, and the feed cylinder bottom is equipped with first discharge port and second di