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CN-121988719-A - Shunting structure of magnesium alloy box mould

CN121988719ACN 121988719 ACN121988719 ACN 121988719ACN-121988719-A

Abstract

The invention discloses a flow distribution structure of a magnesium alloy box body die, which comprises a movable die core arranged in a die cavity, wherein a flow distribution component which is arranged in a protruding manner is arranged at the top of the movable die core, so that the flow distribution component stretches into a flow channel of an inner pouring gate, a windrow space is reserved at the junction of the flow distribution component and a material barrel of a die casting machine and at the top of the movable die core, the flow distribution component comprises a flow distribution cone base and a flow distribution cone arranged on the flow distribution cone base, the flow distribution component is arranged at the top of the movable die core, the flow channel at the inner pouring gate can realize the flow distribution and drainage effects, the thickness of the flow channel can be reduced, the ratio of the flow channel area to the feeding area is reasonable, the air pressure value of a product at the feeding port is reduced to be within a reasonable range of 30bar, the risk of air holes is greatly reduced, and the product qualification rate is improved.

Inventors

  • XIE JIANGLEI
  • WANG LONGXING
  • YU SHUQI
  • SUN XIUXIANG
  • Fang Shuochi
  • LU CHENBIN
  • HONG WANGRONG
  • CAO XINMING
  • DU ZHIDAN
  • XIE FENG
  • LI BISHENG
  • YAO BO
  • WANG BO

Assignees

  • 宁波勋辉科技股份有限公司

Dates

Publication Date
20260508
Application Date
20260123

Claims (10)

  1. 1. The utility model provides a reposition of redundant personnel structure of magnesium alloy box mould, its characterized in that, including setting up movable mould core (1) in the die cavity, be located the top of movable mould core (1) is provided with the reposition of redundant personnel subassembly that the protrusion set up, makes in the runner (3) of reposition of redundant personnel subassembly in stretching into the mould in-gate to keep reposition of redundant personnel subassembly and die casting machine storage bucket intersection and the top of movable mould core (1) all has the windrow space, reposition of redundant personnel subassembly includes reposition of redundant personnel cone base and sets up reposition of redundant personnel cone (22) on reposition of redundant personnel cone base.
  2. 2. The flow dividing structure of the magnesium alloy case mold according to claim 1, wherein the flow dividing cone (22) is a tapered structure with a gradually increasing cross section from top to bottom, and the top of the tapered structure is a cambered surface.
  3. 3. The flow distribution structure of the magnesium alloy box die according to claim 2, wherein a gap H exists at the junction of the top cambered surface of the flow distribution cone (22) and the charging basket (4) of the die casting machine.
  4. 4. The split flow structure of the magnesium alloy box die according to claim 3, wherein the gap H is controlled to be 20-30 mm.
  5. 5. The flow dividing structure of the magnesium alloy case mold according to claim 2, wherein a feed gap exists between the circumference of the flow dividing cone (22) and the cavity wall in the runner (3).
  6. 6. The flow dividing structure of the magnesium alloy case mold according to claim 2, wherein the lower working surface of the flow dividing cone (22) is provided with a connecting portion recessed in the lower working surface.
  7. 7. The split structure of claim 6, wherein the connecting portion is a connecting hole.
  8. 8. The flow distribution structure of the magnesium alloy box die according to claim 6, wherein the flow distribution cone base comprises a movable die insert (21) and a positioning pin (23), the movable die insert (21) is embedded in the movable die core (1), the positioning pin (23) is fixedly connected to the movable die insert (21), and the working end of the positioning pin (23) protrudes out of the upper working surface of the movable die insert (21).
  9. 9. The flow dividing structure of the magnesium alloy box die according to claim 8, wherein the flow dividing cone (22) is movably connected with the positioning pin (23) through a connecting part, and a gap S exists between a lower working surface of the flow dividing cone (22) and an upper working surface of the movable die insert (21).
  10. 10. The method for processing the box body by the split-flow structure of the magnesium alloy box body die is characterized by comprising the following steps of: Step one, arranging a shunt assembly on a movable mold core; Step two, die casting and demoulding are completed, so that the split cone is separated from the locating pin and taken out of the shape cavity together with the product; Step three, machining a split cone which is formed by integrating stockpiling communication and stockpiling at the top of the box body; And step four, further processing the top of the box body into a finished product meeting the requirements.

Description

Shunting structure of magnesium alloy box mould Technical Field The invention relates to the technical field of injection casting molds, in particular to a split flow structure of a magnesium alloy box body mold. Background The high pressure die casting mold is one kind of advanced manufacture technology widely used in automobile, electronic, electric appliance, industry, etc. and is one kind of mold for producing metal parts, and the mold is one kind of mold with liquid or semi-liquid metal filled fast into the mold cavity and cooled to solidify under pressure to form required shape and size. The high-pressure die casting mold is generally composed of a fixed mold and a movable mold, wherein the fixed mold is connected to a injection part of the die casting machine, and the movable mold is connected to a middle plate of the die casting machine. The structure and components of high pressure die casting molds vary from product to product and process to process, but generally include fixed mold inserts, movable mold inserts, core pulling mechanisms, gating systems, cooling systems, and the like. The material and heat treatment requirements of the high-pressure die casting mold also vary according to different metal alloys and use conditions, but are generally required to have the characteristics of high strength, high hardness, high wear resistance, high heat resistance, and the like. Such box type products as shown in fig. 1 have certain height, and the top area needs certain thickness to guarantee subsequent processing, but because the flow area of runner is big, the feeding area can present solid condition for the molten metal pressure boost proportion is maladjusted in the material way, and filling speed is slow, and then causes the runner to wrap up in gas seriously, forms the gas pocket risk higher, leads to unable completion subsequent product further processing in this position department, can't guarantee product quality, and the product percent of pass is lower. Disclosure of Invention Aiming at the defects in the prior art, the invention provides the split flow structure of the magnesium alloy box body die, which can improve and adjust the flow of the material port and ensure that the risk of stacking air holes at the position of a feeding area is reduced, thereby being beneficial to improving the qualification rate of products. In order to solve the technical problems, the invention solves the technical problems by the following technical scheme that the flow distribution structure of the magnesium alloy box body die comprises a movable die core arranged in a die cavity, a flow distribution assembly arranged in a protruding mode is arranged at the top of the movable die core, the flow distribution assembly extends into a runner of an inner sprue, a stacking space is reserved at the junction of the flow distribution assembly and a charging basket of a die casting machine and at the top of the movable die core, and the flow distribution assembly comprises a flow distribution cone base and a flow distribution cone arranged on the flow distribution cone base. According to the technical scheme, the split cone is of the cone-shaped structure with the cross section gradually increased from top to bottom, and the top of the cone-shaped structure is the cambered surface, so that the split cone is beneficial to forming a guiding effect on molten metal. According to the technical scheme, a gap H exists at the junction of the top cambered surface of the split cone and the charging basket of the die casting machine, so that the supercharging effect can be realized. According to the technical scheme, the gap H is controlled to be 20 mm-30 mm. According to the technical scheme, a feeding gap exists between the circumference of the split cone and the cavity wall in the flow channel. According to the technical scheme, the lower working face of the split cone is provided with the connecting part which is concavely arranged on the lower working face. According to the technical scheme, the connecting part is a connecting hole. According to the technical scheme, the shunt cone base comprises the movable die insert and the locating pin, the movable die insert is embedded in the movable die core, the locating pin is fixedly connected to the movable die insert, and the working end of the locating pin protrudes out of the upper working surface of the movable die insert. According to the technical scheme, the split cone is movably connected with the locating pin through the connecting part, a gap S exists between the lower working face of the split cone and the upper working face of the movable die insert, the thickness of the top of a product is guaranteed, and machining allowance is guaranteed. The method for processing the box body by adopting the box body die with the flow dividing structure comprises the following steps: Step one, arranging a shunt assembly on a movable mold core; Step two, die casting and demoulding a