CN-122007311-A - Pitting die, aluminum product forging method and aluminum product forging device

CN122007311ACN 122007311 ACN122007311 ACN 122007311ACN-122007311-A

Abstract

The application discloses a pitting die, an aluminum product forging method and an aluminum product forging device. The pitting mold comprises a first mold component and a second mold component which are oppositely arranged. The first die assembly is provided with an upper die pressing block. The second die assembly is arranged opposite to the first die assembly, and comprises a fixed inlet block and a plurality of angle sliding blocks, wherein the fixed inlet block forms a positioning cavity for placing and positioning the aluminum blank. A plurality of angle sliders are arranged around the positioning cavity, each angle slider is provided with a forming surface facing the positioning cavity, and the forming surface is provided with a pock convex array. The upper die pressing block is matched with the angle sliding block, the upper die pressing block is provided with a wedge surface and is matched with a stress inclined surface on the angle sliding block, and the angle sliding block is driven to feed along the preset angle direction through the relative sliding of the wedge surface and the stress inclined surface during die assembly, so that the pit and pit are formed by embossing at least one surface of the aluminum blank by the pit protrusion array.

Inventors

XIANG JICHENG
KANG YI
ZHANG DONGPING

Assignees

富泰华工业（深圳）有限公司

Dates

Publication Date: 20260512
Application Date: 20260305

Claims (10)

1. A pitting die, comprising: The first die assembly is provided with an upper die pressing block; The second die assembly is arranged opposite to the first die assembly and comprises a fixed inlet block and a plurality of angle sliding blocks, and the fixed inlet block forms a positioning cavity for placing and positioning the aluminum blank; a plurality of angle sliders are arranged around the positioning cavity, each angle slider is provided with a forming surface facing the positioning cavity, and a pock convex array is arranged on the forming surface; The upper die pressing block is matched with the angle sliding block, the upper die pressing block is provided with a wedge surface and is matched with a stressed inclined surface on the angle sliding block, and the angle sliding block is driven to feed along the preset angle direction through the relative sliding of the wedge surface and the stressed inclined surface during die assembly, so that the pit protrusion array is stamped on at least one surface of the aluminum blank to form pits.
2. The pitting mold according to claim 1, wherein the angle slide comprises at least a lateral slide for forming pits by imprinting four sides of the aluminum material blank, and the first mold assembly further comprises a top slide or an end slide for forming pits by imprinting the top surface or the end surface of the aluminum material blank.
3. The pitting mold according to claim 1, wherein the second mold assembly is provided with a slide block fixing block, the upper mold pressing block is mounted on an upper beating plate of the first mold assembly, and the upper mold pressing block compresses the slide block fixing block during mold closing and drives the angle slide block to feed through wedge-shaped fit in the continuous descending process.
4. The pitting mold according to claim 1, wherein the second mold assembly is provided with an elastic member and a slide block ejector rod, the elastic member is compressed and stored in energy during mold closing and feeding, the angle slide block is pushed to return back by releasing energy during mold opening, and the slide block ejector rod is used for applying auxiliary pushing force to the angle slide block to enable the angle slide block to return and complete stripping.
5. The pitting mold according to claim 1, wherein the second mold assembly is provided with a material ejection mechanism, the material ejection mechanism comprises a material ejection rod, the upper end of the material ejection rod extends into the bottom of the positioning cavity or a position adjacent to the bottom of the positioning cavity, and the aluminum blank after the pitting is ejected from the positioning cavity in an upward direction after the mold is opened.
6. The pitting mold according to claim 1, wherein a guiding and matching structure is provided between the first mold component and the second mold component, the guiding and matching structure including an outer guide post and an outer guide sleeve and an inner guide post and an inner guide sleeve.
7. The pitting mold according to claim 1, wherein the fixed entering block is provided with a avoidance structure for avoiding a product identification area, and the avoidance structure is a two-dimensional code avoidance block or a avoidance concave position.
8. The pitting mold according to claim 1, wherein the pitting convex array comprises a plurality of convex units, the tops of the convex units are arc transition structures, the maximum outer diameter of the convex units is 0.10mm-1.50mm, the height of the convex units is 0.02mm-0.30mm, and the center distance between adjacent convex units is 0.20mm-2.00mm.
9. An aluminum material forging method, comprising: Annealing the aluminum blank to obtain an annealed aluminum blank; dotting the annealed aluminum blank by using the dotting die according to any one of claims 1 to 8, so that the dotting convex array is stamped on the surface of the aluminum blank to form pit pits; And (3) oiling and lubricating the aluminum blank after the pitting, and forging and forming on a forging press to obtain a forging and forming part.
10. An aluminum forging device, which is characterized by comprising a feeding module, an oiling module, a forging forming module and a pitting die according to any one of claims 1 to 8, The pitting mould is used for pitting the aluminum blank to form pits on the surface of the aluminum blank; The feeding module is used for feeding the aluminum blank to the pitting die and transferring the aluminum blank to the oiling module after the pitting is finished; the oiling module is used for carrying out oiling lubrication treatment on the transferred aluminum blank; The forging forming module is used for forging forming of the aluminum blank after oil lubrication.

Description

Pitting die, aluminum product forging method and aluminum product forging device Technical Field The application relates to the technical field of metal material precision plastic forming and forging dies, in particular to a pitting die, an aluminum forging device and an aluminum forging method. Background With the development of modern industry, aluminum materials are widely applied in the fields of aerospace, automobile manufacturing, consumer electronics and the like due to the characteristics of light weight, high strength, easiness in processing and the like. Forging and pressing are important processes for precision plastic forming of aluminum materials, and have key influences on appearance quality, dimensional accuracy and mechanical properties of products. To improve productivity and consistency, forging and pressing production lines are gradually developed to an automatic and continuous direction. In automated forging production, the flow direction and flow velocity of the material in the cavity are significantly affected by contact friction and lubrication conditions. For the filling sensitive areas such as thin walls and corners, if the friction state is unstable or lubrication is not uniformly supplied, defects such as material shortage, material flowing marks, folds, stamping and even local cracking are easy to occur. The existing scheme generally changes interface friction by adjusting a lubrication mode or carrying out sand blasting, polishing and other treatments on the surface of the die, but has the defects that firstly, controllable local braking and guiding are difficult to realize in a complex area by simply relying on lubrication, secondly, pretreatment procedures such as sand blasting, cleaning and the like increase equipment and manpower investment, and are not beneficial to metronometric and online production, and thirdly, the durability of the roughening of the surface of the die is affected by abrasion, and the long-term consistency is poor. Disclosure of Invention In view of the above problems, an object of the present application is to provide a pitting mold and a forging forming method, which realize cooperative control of friction, lubrication and material flow state in the forging process, thereby improving the stability of filling and suppressing appearance defects, and reducing pretreatment processes such as sand blasting, cleaning, etc. In order to achieve the above purpose, the application adopts the following technical scheme: In one aspect, a pitting die is provided, comprising a first die assembly and a second die assembly which are oppositely arranged, wherein the second die assembly is provided with a fixed inlet block which forms a positioning cavity for placing and positioning an aluminum blank, the second die assembly is also provided with a plurality of angle sliding blocks which are arranged around the positioning cavity, each angle sliding block is provided with a forming surface facing the positioning cavity, a pitting bulge array is arranged on the forming surface, the first die assembly is provided with an upper die block matched with the angle sliding blocks, each upper die block is provided with a wedge surface and is matched with a stress inclined surface of the angle sliding block, and the angle sliding blocks are driven to feed along a preset angle direction through relative sliding of the wedge surface and the stress inclined surface during die assembly, so that the pitting bulge array is stamped on at least one surface of the aluminum blank to form pits. In some embodiments, the angle slide block at least comprises a lateral slide block for embossing four sides of a blank to form pits, and optionally comprises a top slide block or an end slide block for embossing the top surface or the end surface of the blank to form pits, in some embodiments, the second die assembly is provided with a slide block fixing block, the upper die block is arranged on an upper beating plate of the first die assembly, the upper die block compresses the slide block fixing block and drives the angle slide block to feed through wedge fit during die assembly, in some embodiments, the second die assembly is provided with an elastic piece and a slide block ejector rod to provide a reset force for the angle slide block and assist in removing the pits during die assembly, the second die assembly can be further provided with a liftout mechanism to eject the blank after the pits are punched from a positioning cavity so as to facilitate the material taking of a manipulator, in some embodiments, a guide matching structure of an outer guide post/an outer guide sleeve and an inner guide post/an inner guide sleeve is arranged between the first die assembly and the second die assembly so as to improve the centering precision and ensure the consistency of the feed of the angle slide block, in some embodiments, the fixing block is provided with a position avoiding structure for avoiding a p