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CN-121988687-A - Integral forging and forming method and die mechanism for metal product

CN121988687ACN 121988687 ACN121988687 ACN 121988687ACN-121988687-A

Abstract

The invention relates to the technical field of metal manufacturing and discloses an integral forging forming method and a die mechanism of a metal product, wherein the method comprises the following steps of S1, preprocessing a titanium outer frame, namely processing the titanium outer frame to ensure that the roughness of the inner wall of the outer frame reaches 100-250 microns; S2, preparing a mould, namely spraying a release agent to the cavity wall of the forging forming mould. The invention breaks through the limitation of simple characteristics of the forging and pressing formed product, solves the problems of long process, large cutter abrasion loss, difficult processing of materials, long processing time, large resource occupation, high comprehensive cost and the like, and the characteristics of the product which is usually forged and formed are simple in structure.

Inventors

  • XIONG PAN

Assignees

  • 广州富金精密科技有限公司

Dates

Publication Date
20260508
Application Date
20260203

Claims (10)

  1. 1. An integral forging forming method of a metal product is characterized by comprising the following steps: S1, preprocessing a titanium outer frame, namely processing the titanium outer frame to ensure that the roughness of the inner wall of the outer frame reaches 100-250 microns; s2, preparing a mould, namely spraying a release agent to the cavity wall of a forging forming mould, wherein the mould comprises an upper mould and a lower mould, and heating the mould cavity and a titanium outer frame arranged in the cavity to 20-350 ℃; S3, aluminum material injection, namely injecting an aluminum alloy material with the temperature of 20-780 ℃ higher than the solidus temperature into a lower die cavity; s4, die assembly forging, namely driving the upper die to integrally move downwards to be closed with the lower die, and applying forging pressure upwards through a lower punch of the lower die to deform and fill the cavity with the aluminum alloy material and wrap the titanium outer frame; and S5, maintaining pressure, solidifying and demoulding, namely maintaining forging pressure until the aluminum alloy material is completely solidified to form a composite blank, driving the upper die to reset upwards, pushing the composite blank through the cooperation of an ejection assembly of the upper die and the lower punch, and finishing demoulding.
  2. 2. A die mechanism for an integral forging forming method of a metal product as set forth in claim 1, wherein the die mechanism comprises an upper die and a lower die; The upper die comprises a bearing body and an ejection assembly capable of sliding up and down in the bearing body, wherein the bearing body is formed by connecting an upper jacking column (1), an upper cover plate (2), an upper foot pad (3), an upper fixing plate (4), an upper stop plate (5), an upper die plate (6), a baffle block (7), an upper die core (8), an upper insert (9) and an upper limiting plate (10); the ejection assembly comprises an upper ejector rod (11), an upper beating plate (12) and a first spring (13); The upper ejector rod (11) is fixedly connected to the bottom of the upper ejector plate (12), the first spring (13) is arranged between the upper ejector plate (12) and the upper cover plate (2), and ejection holes matched with the upper ejector rod (11) are formed in the upper fixed plate (4), the upper mold core (8), the upper insert (9) and the upper limiting plate (10); The lower die comprises a lower die plate (14), a lower insert (15), a lower base plate (16), a lower die seat (17), lower pad feet (18) and a lower punch (21); the lower die plate (14), the lower insert (15), the lower base plate (16), the lower die seat (17) are fixedly connected with the lower base plate (18), and the lower punch (21) is arranged in the lower die and can move up and down along the axial direction of the lower die.
  3. 3. The mold mechanism of claim 2, wherein: The top of going up beating board (12) is seted up flutedly, be equipped with arm-tie (23) in the recess, the one end of first spring (13) with upper cover plate (2) fixed connection, the other end with arm-tie (23) fixed connection, the top equidistance of arm-tie (23) is encircleed fixed mounting and is had sleeve (24), the inside slidable mounting of sleeve (24) has slide bar (25), the top of slide bar (25) with upper cover plate (2) fixed connection, the bottom fixed mounting of slide bar (25) has first electro-magnet (26), can be right after first electro-magnet (26) circular telegram arm-tie (23) are attracted and are made its rising, the inside of sleeve (24) is equipped with can slow down the retarder assembly of arm-tie (23) speed that resets.
  4. 4. A die mechanism as claimed in claim 3, wherein: The retarding assembly comprises a rubber strip (27), a mounting strip (28), a second spring (30) and a pulling assembly; the inner wall equidistance of sleeve (24) is encircleed and is offered the spout, installation strip (28) slidable mounting is in the spout, rubber strip (27) fixed connection is in installation strip (28) are close to one side of slide bar (25), second spring (30) will installation strip (28) with spout inner wall connection, pulling assembly can be right installation strip (28) are pulled, make it keep away from slide bar (25).
  5. 5. The mold mechanism of claim 4, wherein: the pulling assembly comprises an iron block (29) and a second electromagnet (31); the iron block (29) is fixedly arranged on the mounting strip (28), the second electromagnet (31) is fixedly arranged on the inner wall of the chute, and the magnetic field generated when the first electromagnet (26) is electrified can not attract the iron block (29).
  6. 6. The mold mechanism of claim 5, wherein: the baffle block (7) is arranged at the lower part of the outer side of the upper die plate (6) and is used for preventing the aluminum material from overflowing the die cavity during injection.
  7. 7. The mold mechanism of claim 6, wherein: A gap (22) is formed between the bottom of the upper ejector pin (1) and the upper beating plate (12), and the gap (22) can enable the upper beating plate (12) to move to the bottom of the upper ejector pin (11) to leave a cavity of the upper mold core (8) with the upper ejector pin (11).
  8. 8. The mold mechanism of claim 7, wherein: The elastic force of the first spring (13) can overcome the friction force between the rubber strip (27) and the sliding rod (25) to push the pulling plate (23) and the upper beating plate (12) downwards to match with the upper ejector rod (11) so as to demould the composite blank.
  9. 9. The mold mechanism of claim 8, wherein: The first electromagnet (26) can lift the pulling plate (23) to be out of contact with the upper beating plate (12) after being electrified.
  10. 10. The method of unitary forging and forming of a metal product as recited in claim 1, wherein: the forging pressure ranges from 60 MPa to 250MPa.

Description

Integral forging and forming method and die mechanism for metal product Technical Field The invention belongs to the technical field of metal manufacturing, and particularly relates to an integral forging forming method and a die mechanism of a metal product. Background The smart phone outer frame is continuously changed from plastics, aluminum materials, stainless steel, titanium alloys and the like. The aluminum product has the advantages of easy cutting, low processing difficulty, high efficiency, low cost, difficult cutting of steel and titanium materials, easy abrasion of processing cutters, much lower processing efficiency than the aluminum product, much higher cost than the aluminum product and higher strength. In order to meet the requirements of high strength and high processing efficiency of the appearance of the mobile phone frame and low cost. Stainless steel and titanium alloy are used for the outer side surface of the outer frame in the processing technology, and aluminum alloy which is easier to cut is used for the inner side. The traditional mode is that the frame is divided into a plurality of parts, each part is respectively manufactured by rolling, raw materials are firstly compositely manufactured (the outer side of the outer frame is made of titanium or stainless steel, the inner side of the outer frame is made of aluminum), then the outer frame is formed by adopting a forging process and is processed by adopting CNC, the middle frame is separately processed, and finally the outer frame and the middle frame are combined and welded together. Secondly, the whole part is directly finished by CNC processing of all-aluminum materials, but the strength of the all-aluminum materials is far less than that of titanium materials. Thirdly, all titanium or all stainless steel is forged and formed, and then CNC processing is carried out, so that the processing amount of the process is very large, the cost is extremely high, and the process is very rarely used in the industry. The method for shortening the process, reducing the cost and improving the strength is a new process requirement by integrally compounding the materials together, and is also a process innovation and challenge. Therefore, it is necessary to provide an integral forging method and a die mechanism for a metal product to solve the above problems. Disclosure of Invention In view of the above, the present invention provides an integral forging forming method and a mold mechanism for metal products, so as to solve the problems set forth in the background art. In order to achieve the purpose, the invention provides the following technical scheme that the integral forging forming method of the metal product comprises the following steps of: S1, preprocessing a titanium outer frame, namely processing the titanium outer frame to ensure that the roughness of the inner wall of the outer frame reaches 100-250 microns; s2, preparing a mould, namely spraying a release agent to the cavity wall of a forging forming mould, wherein the mould comprises an upper mould and a lower mould, and heating the mould cavity and a titanium outer frame arranged in the cavity to 20-350 ℃; S3, aluminum material injection, namely injecting an aluminum alloy material with the temperature of 20-780 ℃ higher than the solidus temperature into a lower die cavity; s4, die assembly forging, namely driving the upper die to integrally move downwards to be closed with the lower die, and applying forging pressure upwards through a lower punch of the lower die to deform and fill the cavity with the aluminum alloy material and wrap the titanium outer frame; and S5, maintaining pressure, solidifying and demoulding, namely maintaining forging pressure until the aluminum alloy material is completely solidified to form a composite blank, driving the upper die to reset upwards, pushing the composite blank through the cooperation of an ejection assembly of the upper die and the lower punch, and finishing demoulding. A die mechanism for the integral forging and forming method of the metal product comprises an upper die and a lower die; the upper die comprises a bearing body and an ejection assembly capable of sliding up and down in the bearing body, wherein the bearing body is formed by connecting an upper ejector post, an upper cover plate, an upper pad foot, an upper fixing plate, an upper stop plate, an upper die plate, a material blocking block, an upper die core, an upper insert and an upper limiting plate; The ejection assembly comprises an upper ejector rod, an upper beating plate and a first spring; The upper ejector rod is fixedly connected to the bottom of the upper beating plate, the first spring is arranged between the upper beating plate and the upper cover plate, and ejection holes matched with the upper ejector rod are formed in the upper fixing plate, the upper mold core, the upper insert and the upper limiting plate; The lower die comprises a lower die plate, a lowe