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CN-224222704-U - Back pressure sliding block structure of high-pressure casting die movable die

CN224222704UCN 224222704 UCN224222704 UCN 224222704UCN-224222704-U

Abstract

The utility model relates to the technical field of die casting dies, in particular to a back pressure sliding block structure of a movable die of a high-pressure casting die, which comprises a movable die sleeve plate, a movable die core positioned in the center of the movable die sleeve plate, a plurality of groups of core pulling devices fixed on the periphery of the movable die sleeve plate and a plurality of back pressure sliding blocks positioned between the core pulling devices and the movable die core, wherein the back pressure sliding blocks are connected to the movable die sleeve plate in a sliding manner, the core pulling devices are used for driving the back pressure sliding blocks to horizontally slide, one end of each back pressure sliding block, which is close to the movable die core, is provided with an extension surface, a back-buckling pressing surface and a profiling surface, the back-buckling pressing surface is horizontally arranged, the extension surface is protruded towards the direction of the movable die core, and the back-buckling pressing surface is connected between the profiling surface and the extension surface. The scheme can enable demoulding to be smoother, reduce strain and improve product quality, meanwhile, a reverse pushing mechanism of a fixed die is omitted, the die structure is simplified, cost is reduced, and production efficiency is improved.

Inventors

  • YANG CHAOJIN

Assignees

  • 重庆渝江岚峰动力部件有限公司

Dates

Publication Date
20260512
Application Date
20250527

Claims (6)

  1. 1. The back pressure sliding block structure of the movable die of the high-pressure casting die is characterized by comprising a movable die sleeve plate, a movable die core positioned in the center of the movable die sleeve plate, a plurality of groups of core pulling devices fixed on the periphery of the movable die sleeve plate and a plurality of back pressure sliding blocks positioned between the core pulling devices and the movable die core, wherein the back pressure sliding blocks are in sliding connection with the movable die sleeve plate; The back pressure slider is close to the one end of movable mould core and is equipped with extension face, back-fastening pressfitting face and profile modeling face, back-fastening pressfitting face level sets up, extension face is protruding towards the movable mould core direction, back-fastening pressfitting face links up with profile modeling face and extends between the face.
  2. 2. The back pressure slide block structure of the movable die of the high pressure casting die of claim 1, wherein the lower end of the back pressure slide block is further provided with a protruding block, the side surface of the movable die core is provided with a groove, and the protruding block is embedded into the groove.
  3. 3. The back pressure slide block structure of a movable die of a high pressure casting die according to claim 2, wherein the movable die plate is fixedly provided with a guide chute, and the back pressure slide block is slidably connected in the guide chute.
  4. 4. The back pressure slide block structure of the movable die of the high pressure casting die of claim 3, wherein the back pressure slide block is further provided with an inclined surface, and a locking block is arranged on the inclined surface.
  5. 5. The back pressure slide block structure of the movable die of the high pressure casting die of claim 4, wherein the back pressure slide block is further provided with a connecting groove, the core puller is a hydraulic cylinder, and the end part of a piston rod of the hydraulic cylinder is clamped in the connecting groove.
  6. 6. The back pressure slide block structure of a movable die of a high pressure casting die according to claim 5, wherein a bracket is fixed on the side surface of the movable die sleeve plate, and the core puller is fixed on the bracket.

Description

Back pressure sliding block structure of high-pressure casting die movable die Technical Field The utility model relates to the technical field of die casting dies, in particular to a back pressure sliding block structure of a movable die of a high-pressure casting die. Background In the modern manufacturing industry, the high-pressure die casting process is widely applied to various fields of automobiles, electronics, aerospace and the like by virtue of the advantages of high efficiency, high precision and the like, and is used for producing various metal parts with complex shapes. High-pressure die casting is carried out by injecting alloy liquid in a high-temperature molten state into a die cavity in a high-speed and high-pressure mode through a die injection device of a die casting machine. Under the action of high pressure, the alloy liquid fills all corners of the cavity rapidly, and after the cavity is filled, the alloy liquid is kept at a certain pressure, so that the alloy liquid is solidified and formed under the pressure. After the casting is cooled to a certain degree, the die casting machine is opened, the movable die is separated from the fixed die, the formed casting is pushed out of the die by utilizing an ejection mechanism on the movable die, a die casting production cycle is completed, and the structure of the die casting die plays a vital role in the die casting effect, such as the die structure disclosed in the prior art of a partial thin-wall part die casting die and die casting process (publication number: CN 110523952A), molten metal is introduced into a cavity between the fixed die and the movable die for forming, and simultaneously, the two side sliding blocks are utilized to assist in forming the protruding structures on two sides of the die casting, so that the forming of the whole die casting is finally completed, but the prior art still has the following technical problems: Because the die casting die is easy to adhere to the problem of the side of the die casting die in the die opening process, the problem is mainly caused by the structural difference of the die casting die, the die casting die is usually provided with a protruding structure for forming various cavities of the die casting die, so that the die casting die can generate holding force on the protruding structure on the die casting die in the shrinkage solidification process, the die casting die is easy to adhere to the die, the protruding part of the die is covered by the liquid metal alloy after the die casting die is molded in the cavities in the centers of the movable die and the fixed die, the die adhering phenomenon of different degrees is easy to occur in the die opening process, the die adhering problem can cause the surface quality of the die casting die to be damaged, the defects of surface roughness, strain, peeling, even meat shortage and the like are caused, the die casting die is forced to be released, the product quality is not up to standard, the rejection rate is improved, and the raw materials and the production cost are greatly wasted. Disclosure of utility model The utility model provides a back pressure sliding block structure of a movable die of a high-pressure casting die, which can solve the problems that the die casting is easy to adhere to the die and difficult to demould due to overlarge holding force of the die to the die casting when the die casting die in the prior art is demoulded, so that the defects of surface pull damage and the like of the die casting during the demoulding are easy to be caused, the product quality is reduced and the cost is increased. The application provides a back pressure sliding block structure of a movable die of a high-pressure casting die, which comprises a movable die sleeve plate, a movable die core positioned in the center of the movable die sleeve plate, a plurality of groups of core pulling devices fixed on the periphery of the movable die sleeve plate and a plurality of back pressure sliding blocks positioned between the core pulling devices and the movable die core, wherein the back pressure sliding blocks are connected to the movable die sleeve plate in a sliding manner; The back pressure slider is close to the one end of movable mould core and is equipped with extension face, back-fastening pressfitting face and profile modeling face, back-fastening pressfitting face level sets up, extension face is protruding towards the movable mould core direction, back-fastening pressfitting face links up with profile modeling face and extends between the face. The beneficial effects are that: 1. The demolding difficulty is reduced, and the product quality is improved. Because die casting die makes the cover half side to die casting's holding power too big lead to die casting bonding die because of structural reason, prior art's slider is exerting demoulding force to die casting from the side middle part of die casting down, however, die casting's structure is