CN114042894A - Prevent mould structure of aluminum alloy die casting deformation - Google Patents
Prevent mould structure of aluminum alloy die casting deformation Download PDFInfo
- Publication number
- CN114042894A CN114042894A CN202111375185.0A CN202111375185A CN114042894A CN 114042894 A CN114042894 A CN 114042894A CN 202111375185 A CN202111375185 A CN 202111375185A CN 114042894 A CN114042894 A CN 114042894A
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- die
- deformation
- aluminum alloy
- casting
- die casting
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- 238000004512 die casting Methods 0.000 title claims abstract description 30
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 23
- 238000005266 casting Methods 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a die structure design for preventing deformation of an aluminum alloy die casting, and relates to the field of die casting. By using the die structure for preventing the deformation of the aluminum alloy die casting, disclosed by the invention, the groove which is recessed towards the interior of the die is designed on the surface of the inner cavity of the die corresponding to the deformation position of the casting, a convex structure which corresponds to the groove is added on the surface of the casting after the liquid state solidification and forming of the aluminum alloy, when the casting is ejected, the convex structure formed in the die by filling can block the ejection of a local position, so that a large opposite ejection resistance is formed, a large local opposite mold holding force of a product can be counteracted, finally, the size of the ejected die casting meets the tolerance requirement of a drawing, and the deformation problem can be thoroughly solved.
Description
Technical Field
The invention relates to a die structure, in particular to a die structure for preventing an aluminum alloy die casting from deforming.
Background
When the aluminum alloy die casting is produced, after the die is opened, a plurality of ejector rods of the die casting are ejected out by a die push rod fixing plate in a balanced mode, then the die casting is ejected out by the ejector rods in a balanced mode, but the die casting is often deformed in actual production due to the fact that the ejection imbalance of the casting is caused by the fact that the local holding force of a product of the die casting is large, and therefore the aluminum alloy die casting is taken out. Due to the limitation of the structural design of the product and the die, the local holding force of the product is too large to be eliminated, meanwhile, the elongation of the aluminum alloy material is poor, and the produced die casting is easy to crack during shaping, so that the product is scrapped.
Disclosure of Invention
The invention aims to provide a die structure for preventing an aluminum alloy die casting from deforming, which can solve the problem of deformation caused by unbalanced ejection force of an ejector rod when the aluminum alloy die casting is ejected by the ejector rod.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a prevent mould structure of aluminum alloy die casting deformation, includes the mould body, its characterized in that: the inner cavity of the die body is provided with a concave groove which is concave towards the inside of the die on the surface of the inner cavity corresponding to the deformation position of the casting, and the groove is of a gradual transition structure which is formed by shallow two sides and deep in the middle.
The improvement of the technical scheme is as follows: the groove is crescent.
The improvement of the technical scheme is as follows: the number of the grooves is set according to the deformation amount of the part.
The improvement of the technical scheme is as follows: and 2-3 grooves are arranged when the deformation of the part is less than 0.8 mm.
The improvement of the technical scheme is as follows: and 3-4 grooves are arranged when the deformation of the part is 0.8-1.5 mm.
The improvement of the technical scheme is as follows: and 4-6 grooves are arranged when the deformation of the part is 1.5-3 mm.
The improvement of the technical scheme is as follows: the length direction of the groove structure is 12-23mm, the width direction is 3-8mm, the depth is 2-5mm, and the angle between the groove structure and the mold taking axis direction of the mold is 30-60 degrees.
Has the advantages that:
by using the die structure for preventing the deformation of the aluminum alloy die casting, disclosed by the invention, the groove which is recessed towards the interior of the die is designed on the surface of the inner cavity of the die corresponding to the deformation position of the casting, a convex structure which corresponds to the groove is added on the surface of the casting after the liquid state solidification and forming of the aluminum alloy, when the casting is ejected, the convex structure formed in the die by filling can block the ejection of a local position, so that a large opposite ejection resistance is formed, a large local opposite die holding force of a product can be counteracted, finally, the size of the die casting during the ejection meets the requirement of a drawing tolerance, and the deformation problem can be thoroughly solved.
Thereby crescent structure both sides are shallow in the middle of dark gradual transition, avoid closed angle stress to reduce the damage to the mould, and crescent structural design can be when the aluminum alloy die casting is ejecting for circular arc transition all around simultaneously, and the outstanding "crescent" structure of part and mould smooth movement prevent that the part from being pulled apart by crescent structure.
The number of crescent structures is set according to the deformation of the part, under the normal condition, 2-3 crescent structures are set when the deformation of the part is less than 0.8mm, 3-4 crescent structures are set when the deformation of the part is 0.8-1.5mm, and 4-6 crescent structures are set when the deformation of the part is 1.5-3 mm. The crescent structure is usually designed to have the maximum effect at the position where the deformation of the part is maximum, and is designed on the plane position of the mold, so that the mold is convenient to polish.
The crescent structure is generally designed to be 12-23mm in the length direction, 3-8mm in the width direction and 2-5mm in depth. The structure and the mold taking axis direction form 30-60 degrees, so that the smaller concave volume can be ensured to form larger resistance, and the smaller polishing workload after the casting is ejected is reduced.
By adopting the die structure for preventing the deformation of the aluminum alloy die casting, the problem of casting deformation caused by product and die structure design factors can be completely solved, and the qualification rate of the die casting is remarkably improved.
Drawings
FIG. 1 is a front view of the first embodiment;
FIG. 2 is a sectional view of the first embodiment;
FIG. 3 is a front view of the second embodiment;
fig. 4 is a partially enlarged view of the second embodiment.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
The following describes the design parameters of the crescent-shaped recessed portion for different sizes of parts through several different embodiments.
The first embodiment is as follows:
as shown in the design schematic diagrams of the oil injection cushion block crescent structures shown in the figures 1 and 2, the right boss of the oil injection cushion block product (2) deforms to cause invisible light in processing, and the deformation is 0.7-1.2mm, so that three crescent structures (5) are designed in the middle of a large circle in the middle of a static die scale (3) of a die-casting die, and the oil injection cushion block crescent structures (5) are 15mm in length, 5mm in width and 4mm in depth. The deformation of the boss position of the oil injection cushion block is obviously reduced to 0.1-0.2mm after the crescent structure is designed, the deformation is smaller than the machining allowance of the product, the production of the product is stable, and the fleshy part protruding out of the crescent structure is machined and removed when the part is formed.
Example two:
as generator support crescent moon structural design sketch map shown in fig. 3, fig. 4, this generator support (1) left side isolated boss appears and warp and leads to processing not adding light, deflection 0.5-0.8mm, consequently, die casting die static mould (3) are close to two crescent moon structures (2) of boss design of warping, and generator support crescent moon structure (2) length design is 12mm, and the width is 4.5mm, and the degree of depth is 2.5 mm. The deformation of the left boss position is obviously improved after the crescent structure is added, and the processing invisible light waste is completely eliminated.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a prevent mould structure of aluminum alloy die casting deformation, includes the mould body, its characterized in that: the inner cavity of the die body is provided with a concave groove which is concave towards the inside of the die on the surface of the inner cavity corresponding to the deformation position of the casting, and the groove is of a gradual transition structure which is formed by shallow two sides and deep in the middle.
2. The die structure for preventing deformation of an aluminum alloy die casting according to claim 1, wherein: the groove is crescent.
3. A die structure for preventing deformation of an aluminum alloy die casting according to claim 1 or 2, wherein: the number of the grooves is set according to the deformation amount of the part.
4. A die structure for preventing deformation of an aluminum alloy die casting according to claim 3, wherein: and 2-3 grooves are arranged when the deformation of the part is less than 0.8 mm.
5. A die structure for preventing deformation of an aluminum alloy die casting according to claim 3, wherein: and 3-4 grooves are arranged when the deformation of the part is 0.8-1.5 mm.
6. A die structure for preventing deformation of an aluminum alloy die casting according to claim 3, wherein: and 4-6 grooves are arranged when the deformation of the part is 1.5-3 mm.
7. A die structure for preventing deformation of an aluminum alloy die cast product according to claim 1, 2, 4, 5 or 6, wherein: the length direction of the groove structure is 12-23mm, the width direction is 3-8mm, the depth is 2-5mm, and the angle between the groove structure and the mold taking axis direction of the mold is 30-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375185.0A CN114042894A (en) | 2021-11-19 | 2021-11-19 | Prevent mould structure of aluminum alloy die casting deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375185.0A CN114042894A (en) | 2021-11-19 | 2021-11-19 | Prevent mould structure of aluminum alloy die casting deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114042894A true CN114042894A (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111375185.0A Pending CN114042894A (en) | 2021-11-19 | 2021-11-19 | Prevent mould structure of aluminum alloy die casting deformation |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005046892A (en) * | 2003-07-30 | 2005-02-24 | Toyota Motor Corp | Method for designing metallic mold |
| JP2009125800A (en) * | 2007-11-28 | 2009-06-11 | Ryobi Ltd | Die-casting die, and die-casting method |
| CN102941332A (en) * | 2012-12-04 | 2013-02-27 | 宁波勋辉电器有限公司 | Movable die pull-back structure of die casting die |
| CN203124695U (en) * | 2013-01-29 | 2013-08-14 | 宁波辉旺机械有限公司 | Split-flow cone reversely buckling structure for preventing channel mold sticking of mold-casting mold |
| CN203390183U (en) * | 2013-07-29 | 2014-01-15 | 南京金城精密机械有限公司 | Center-gated mould |
| CN108339960A (en) * | 2018-04-13 | 2018-07-31 | 广东鸿图科技股份有限公司 | A kind of die casting equipment and pressure casting method preventing running channel adherency cover half |
-
2021
- 2021-11-19 CN CN202111375185.0A patent/CN114042894A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005046892A (en) * | 2003-07-30 | 2005-02-24 | Toyota Motor Corp | Method for designing metallic mold |
| JP2009125800A (en) * | 2007-11-28 | 2009-06-11 | Ryobi Ltd | Die-casting die, and die-casting method |
| CN102941332A (en) * | 2012-12-04 | 2013-02-27 | 宁波勋辉电器有限公司 | Movable die pull-back structure of die casting die |
| CN203124695U (en) * | 2013-01-29 | 2013-08-14 | 宁波辉旺机械有限公司 | Split-flow cone reversely buckling structure for preventing channel mold sticking of mold-casting mold |
| CN203390183U (en) * | 2013-07-29 | 2014-01-15 | 南京金城精密机械有限公司 | Center-gated mould |
| CN108339960A (en) * | 2018-04-13 | 2018-07-31 | 广东鸿图科技股份有限公司 | A kind of die casting equipment and pressure casting method preventing running channel adherency cover half |
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Application publication date: 20220215 |