CN114769518A - Extrusion die for thick-wall notch-shaped aluminum alloy product - Google Patents
Extrusion die for thick-wall notch-shaped aluminum alloy product Download PDFInfo
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- CN114769518A CN114769518A CN202210377085.XA CN202210377085A CN114769518A CN 114769518 A CN114769518 A CN 114769518A CN 202210377085 A CN202210377085 A CN 202210377085A CN 114769518 A CN114769518 A CN 114769518A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 46
- 238000001125 extrusion Methods 0.000 title claims abstract description 20
- 238000010862 gear shaping Methods 0.000 claims abstract description 24
- 230000007704 transition Effects 0.000 claims description 17
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 210000002105 tongue Anatomy 0.000 claims 7
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000007493 shaping process Methods 0.000 description 15
- 239000000956 alloy Substances 0.000 description 11
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
- B22C9/26—Moulds for peculiarly-shaped castings for hollow articles for ribbed tubes; for radiators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a thick-wall notch-shaped aluminum alloy product extrusion die, which comprises a gate die and a forming die which are mutually overlapped, wherein the gate die is provided with two first gate channels and one second gate channel, the first gate channels are opposite to the top of a finished side plate, the second gate channels are opposite to the bottom plate of the finished product, the inlet ends of the first gate channels and the second gate channels are mutually separated, the outlet ends of the first gate channels and the second gate channels are mutually communicated, the part surrounded by the first gate channels and the second gate channels is a gate tongue part, the forming die is provided with a forming channel, the middle part of the forming tongue is provided with a forming tongue, the forming tongue is in positioning fit with the gate tongue through a pin shaft pin hole, the lower edge of the forming tongue is provided with a gear shaping forming structure, the forming channel is provided with a forming gradual change section with gradually reduced section size, the outlet section of the forming gradual change section is the same as the forming size, and the forming surface of the gear shaping forming structure positioned in the forming gradual change section is gradually changed to the forming shape from a plane. The invention can ensure the product molding size and prolong the service life of the mold.
Description
Technical Field
The invention relates to an aluminum alloy product extrusion die, in particular to a thick-wall notch-shaped aluminum alloy product extrusion die.
Background
The common radiator structure generally comprises a bottom plate and fin groups arranged on the bottom plate, side wall plates are further arranged on two sides of the fin groups of part of the radiator, the radiator without the side wall plates can be integrally extruded and formed, for the radiator with the side wall plates, due to the fact that the thickness difference between the side wall plates and the fins is too large, discharging at different positions is difficult to control when aluminum alloy materials are extruded, the radiator with the side wall plates is easy to generate defects, therefore, a combined structure is adopted, the bottom plate and the side wall plates are integrally formed, the fins are independently formed, gear-inserting structures are formed on the bottom plate and the fins, and then the fins and the bottom plate are combined through gear-inserting. The bottom plate and the side wall plates form a notch-shaped part, when the part is extruded and molded, the two sides of the mold part between the two side wall plates are stressed differently and easily deflect to influence the size, and in addition, the aluminum alloy material collected by the gear shaping structure on the bottom plate has large impact and is easy to wear to cause the scrapping of the whole mold.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an extrusion die for a thick-wall notch-shaped aluminum alloy product, and aims to solve the problems of unstable size and impact wear of a gear shaping structure in the process of extruding the product caused by the deflection of a die structure.
The technical scheme of the invention is as follows: a thick-wall notch-shaped aluminum alloy product extrusion die comprises a gate die and a forming die which are mutually overlapped, wherein the gate die is provided with two first gate channels and a second gate channel, the first gate channel is opposite to the top position of a side plate of a notch-shaped aluminum alloy product, the second gate channel is opposite to the bottom plate of the notch-shaped aluminum alloy product, the inlet end of the first gate channel is separated from the inlet end of the second gate channel, the outlet end of the first gate channel is communicated with the outlet end of the second gate channel, the part surrounded by the first gate channel and the second gate channel is a gate tongue part, the forming die is provided with a forming channel, the middle part of the forming die is a forming tongue part, the forming tongue part is in positioning fit with the gate tongue part through a pin shaft pin hole, and the lower edge of the forming tongue part is provided with a gear shaping structure, the forming channel is provided with a forming gradual change section with gradually reduced section size, the outlet section of the forming gradual change section is the same as the forming size, and the forming surface of the gear shaping forming structure positioned on the forming gradual change section is gradually changed into a forming shape from a plane.
Further, first sprue channel is equipped with first through section and convergent section, second sprue channel with the relative part of gear shaping structure is equipped with second through section and runner gradual change section, first through section is close to first sprue channel's entry end, second through section is close to second sprue channel's entry end, the top edge of second through section with the top edge of runner gradual change section flushes and is higher than the lower edge of shaping tongue, the lower edge of runner gradual change section by being higher than the lower edge of shaping channel is to being less than the position slope of the lower edge of shaping channel. Set up the flow velocity that the convergent section increases aluminum alloy material at first runner passageway, and set up runner gradual change section at second runner passageway and reduce the flow velocity of the aluminum alloy material that gear shaping structure corresponds the position, make the material more even at runner passageway's exit end flow, the runner gradual change section downwardly extending of second runner passageway can reduce the velocity of flow of gear shaping structure department, reduces the impact to it.
Further, the first and second through sections have a length 1/2-2/3 of a thickness of the gate mold.
Further, forming die includes a plurality of plug, the lower edge of shaping tongue is equipped with the grafting notch, gear shaping structure set up in the plug, the top of plug is equipped with the trip, the trip with the grafting notch joint. The gear shaping structure which is most easily worn is arranged into a replaceable core rod, other materials with better wear resistance can be used, and the whole service life of the die can be prolonged.
Further, the length of the tenon in the thickness direction of the forming die is 1/3 to 1/2 of the length of the mandrel.
Further, the inserting groove opening and the clamping tenon are arranged in a dovetail shape, and the top angle and the bottom angle of the inserting groove opening are round angles with the radius of 2-5 mm.
Further, the shaping channel includes a cross-sectional stabilizing segment connected to an exit end of the shaping transition, the mandrel extends from the shaping transition to the cross-sectional stabilizing segment, and the gear shaping structure is located at 1/4-1/2 times the length of the cross-sectional stabilizing segment as compared to the length of the mandrel.
The technical scheme provided by the invention has the advantages that:
through gradual change fashioned gear shaping structure, the impact wear of the aluminum alloy material that has reduced to gear shaping structure by runner mold outflow, improve mould life, the first runner passageway and the second runner passageway that separate simultaneously set up make the both sides of runner tongue can be fixed with the periphery of runner mold, and connect by the cooperation of pin pinhole and make shaping tongue and runner tongue form the location and be connected, aluminum alloy material stream produces different effort and takes place the beat to the shaping tongue when reducible both sides board shaping, finished product shaping size obtains reliably guaranteeing.
Drawings
FIG. 1 is a schematic structural view of a thick-walled notched aluminum alloy article.
Fig. 2 is a schematic front view of an extrusion die for a thick-walled notched aluminum alloy article.
Fig. 3 is a schematic longitudinal sectional front view of an extrusion die for a thick-walled notched aluminum alloy product.
Fig. 4 is a schematic front view of the gate mold.
Fig. 5 is a schematic sectional view taken along line a-a of fig. 4.
Fig. 6 is a schematic sectional view B-B of fig. 4.
Fig. 7 is a front view schematically showing the molding die.
Fig. 8 is a schematic sectional view taken along line a-a of fig. 7.
Fig. 9 is a schematic sectional view taken along line B-B of fig. 7.
Fig. 10 is a schematic front view of the mandrel.
FIG. 11 is a schematic side view of a mandrel.
Detailed Description
The present invention is further described in the following examples, which are intended to be illustrative only and not to be limiting as to the scope of the invention, which is to be given the full breadth of the appended claims and any and all modifications within the scope of the following claims.
Referring to fig. 1, the thick-walled notched aluminum alloy product to be extruded by the extrusion die of the thick-walled notched aluminum alloy product according to the embodiment of the present invention includes a bottom plate 100, side plates 200 are disposed at two ends of the bottom plate 100, a raised gear shaping structure 300 is formed on the upper surface of the bottom plate 100, and the gear shaping structures 300 and fins are engaged and inserted to form a complete heat dissipation structure.
As shown in fig. 2 to 9, the thick-walled concave-shaped aluminum alloy product extrusion mold of the present embodiment includes a gating mold 1 and a forming mold 2 stacked on each other, wherein the gating channel of the gating mold 1 primarily shunts the aluminum alloy material and then fuses and guides the aluminum alloy material to the forming mold 2, and the aluminum alloy material flows through the forming channel 5 of the forming mold 2 to obtain a formed product.
The gate channel of the gate mold 1 is divided into three parts, two first gate channels 3 and one second gate channel 4, respectively, and the distinction of the first gate channel 3 from the second gate channel 4 is determined by the division of the inlet end of the gate channel, in other words, three inlets are divided as viewed from the inlet end of the gate channel, while at the outlet end of the gate channel, the first gate channel 3 and the second gate channel 4 are communicated with each other. The first sprue channel 3 is opposite to the top of the side plate 200 of the notch-shaped aluminum alloy product, and the profile of the inlet end of the first sprue channel 3 is matched with the profile of the top of the side plate 200 of the notch-shaped aluminum alloy product, and the overall dimension is about 20 to 30 percent larger than that of the finished product. The second sprue channel 4 is opposite to the bottom plate 100 of the notch-shaped aluminum alloy product, the inlet end of the second sprue channel 4 is concave, the first sprue channel 3 is arranged above the left end and the right end of the second sprue channel 4, the inlet end of the first sprue channel 3 is separated from the inlet end of the second sprue channel 4 by a separating part 6, and the separating part 6 corresponds to the middle part of the side plate 200 of the notch-shaped aluminum alloy product. The middle part of the gate mold 1 surrounded by the first gate channel 3, the separating part 6 and the second gate channel 4 is a gate tongue 7, therefore, the upper part of the gate tongue 7, namely the root part, is directly connected with the periphery of the gate mold 1, while the lower part of the gate tongue 7, namely the head part, is connected with the periphery of the gate mold 1 through the separating parts 6 at two sides, and the three-point connection ensures that the position of the gate tongue 7 can be kept stable when the aluminum alloy is extruded. Further, as shown in fig. 5 and fig. 6, the cross sections of the first gate channel 3 and the second gate channel 4 gradually change in the thickness direction of the gate mold 1, specifically, the first gate channel 3 is provided with a first straight section 301 and a tapered section 302, and the length of the first straight section 301 is 1/2 to 2/3 of the thickness of the gate mold 1. The first through section 301 is close to the inlet end of the first runner passage 3, the tapered section 302 is a reduction in the overall area size of the cross section, and the tapered section 302 of the first runner passage 4 is enlarged in the up-down direction since the first runner passage 3 and the second runner passage 4 need to communicate at the outlet end to fuse the aluminum alloy material to constitute the entire side plate. Accordingly, the second gate passage 4 is provided with a second straight section 401, and the second straight section 401 is 1/2 to 2/3 of the thickness of the gate mold 1. A tapered section 402 is also provided after a part of the second through section 401 opposite to the side plate 200 of the notch-shaped aluminum alloy product 1, and the tapered section 402 is similar in structure to the tapered section 302 after the first through section 301, and will not be described in detail. And a gate transition 403 is connected after a portion of the second pass through section 401 opposite to the bottom plate 100 of the notch-shaped aluminum alloy article. The top edge of the second straight section 401 is flush with the top edge of the gate transition section 403 and is higher than the upper surface of the bottom plate 100 of the notch-shaped aluminum alloy product, i.e. higher than the lower edge of the forming tongue of the forming mold 2, and the lower edge of the gate transition section 403 is inclined from the lower surface of the bottom plate 200 of the notch-shaped aluminum alloy product, i.e. higher than the lower edge of the forming channel 5 of the forming mold 2 to the position lower than the lower edge of the forming channel 5, so as to form a gradually expanding part, reduce the flow rate and reduce the impact on the forming mold 2.
Referring to fig. 7 to 11, the forming mold 2 is provided with a forming channel 5, the middle of the forming mold 2 is a forming tongue 8, and the middle of the forming tongue 8 is positioned and matched with the middle of the gate tongue 7 through a pin hole 9. The lower edge of the forming tongue portion 8 is provided with a plurality of dovetail-shaped insertion notches 801, and a plurality of core rods 10 are clamped with the insertion notches 801 through clamping tenons 1001 on the upper portions of the core rods 10. The lower surface of the mandrel 10 is provided with a shaping structure 11 for shaping the shaping structure 300 of the bottom plate 100 of the notch-shaped aluminum alloy product, and 3 to 5 shaping structures 11 may be provided on each mandrel 10. The length of the core rod 10 corresponds to the thickness of the molding die 2, the plug notch 801 does not penetrate through the molding die 2, the depth of the plug notch is 1/3 to 1/2 of the thickness of the molding die 2, and the length of the tenon 1001 of the core rod 10 is 1/3 to 1/2 of the thickness of the molding die 2 and is arranged on the side close to the gate die 1. The top angle and the bottom angle of the inserting groove 801 are set to be round angles with the radius of 2-5 mm, and the installation stability and the connection strength are guaranteed. When the core rod 10 is assembled with the forming tongue 8, the aluminum alloy material does not move the core rod 10. The molding channel 5 is provided with a molding transition section 501 with a tapered cross section size and a cross section stabilizing section 502, the outlet cross section of the molding transition section 501 is the same as the molding size, and the cross section stabilizing section 502 is connected to the outlet end of the molding transition section 501. The forming transition 501 is mainly located opposite to the bottom plate 100 of the notch-shaped aluminum alloy article, and is formed by the change of the lower surface of the mandrel 10. The entire core rod 10 extends from the forming transition section 501 to the section stabilizing section 502, the forming surface of the gear shaping structure 11 of the forming transition section 502 is gradually changed from a plane to a forming shape, that is, the lower surface of the core rod 10 is a plane when being close to one side of the gate mold 1, while in the thickness direction of the forming mold 2, that is, the length direction of the core rod 10, the lower surface of the core rod 10 is gradually protruded to form the gear shaping structure 11, and the gear shaping structure 11 is not changed when the section stabilizing section 502 is changed, wherein the gear shaping structure 11 is located at 1/4 to 1/2 of the length of the section stabilizing section 502 of the core rod 10. The cross-section of the entire forming channel 5 remains constant in other parts than the mandrel 10. The structure improves the structural strength of the core rod 10, and the transition size is also beneficial to increasing the extrusion speed of the main frame body, realizing the balance of the extrusion speed and obtaining good product quality.
Claims (7)
1. A thick-wall concave aluminum alloy product extrusion die comprises a gate die and a forming die which are mutually overlapped, and is characterized in that the gate die is provided with two first gate channels and a second gate channel, the first gate channels are opposite to the top of a side plate of a concave aluminum alloy product, the second gate channels are opposite to the bottom plate of the concave aluminum alloy product, the inlet ends of the first gate channels are mutually separated from the inlet ends of the second gate channels, the outlet ends of the first gate channels are mutually communicated with the outlet ends of the second gate channels, the part surrounded by the first gate channels and the second gate channels is a gate tongue, the forming die is provided with a forming channel, the middle part of the forming die is a forming tongue, and the forming tongue is in positioning fit with the gate tongue through a pin hole, the lower edge of the forming tongue portion is provided with a gear shaping forming structure, the forming channel is provided with a forming transition section with a gradually reduced section size, the outlet section of the forming transition section is the same as the forming size, and the forming surface of the gear shaping forming structure, which is positioned on the forming transition section, is gradually changed from a plane to a forming shape.
2. A thick-walled notched aluminum alloy product extrusion die as claimed in claim 1, wherein said first sprue channel is provided with a first straight-through section and a tapered section, and a portion of said second sprue channel opposite to said tooth formation structure is provided with a second straight-through section and a sprue tapered section, said first straight-through section being close to an inlet end of said first sprue channel, said second straight-through section being close to an inlet end of said second sprue channel, a top edge of said second straight-through section being flush with a top edge of said sprue tapered section and higher than a lower edge of said forming tongue, and said sprue tapered section having a lower edge inclined from higher than said lower edge of said forming channel to a position lower than said lower edge of said forming channel.
3. A thick-walled notched aluminum alloy product extrusion die as claimed in claim 2, wherein the length of the first through section and the second through section is 1/2 to 2/3 of the thickness of the gating die.
4. The extrusion die for the thick-wall notched aluminum alloy product as claimed in claim 1, wherein the forming die comprises a plurality of core rods, the lower edges of the forming tongues are provided with insertion notches, the gear shaping structures are arranged on the core rods, and the tops of the core rods are provided with clamping tenons which are clamped with the insertion notches.
5. A thick-walled notched aluminum alloy product extrusion die as claimed in claim 4, wherein the length of the trip in the thickness direction of the forming die is 1/3 to 1/2 of the length of the mandrel.
6. A thick-walled notched aluminum alloy product extrusion die as claimed in claim 4, wherein the socket notch and the tenon are arranged in a dovetail shape, and the top corner and the bottom corner of the socket notch are arranged as round corners with a radius of 2-5 mm.
7. A thick-walled notched aluminum alloy product extrusion die as claimed in claim 4, wherein said forming channel includes a section stabilizing section connected to an outlet end of the forming transition, said mandrel extends from the forming transition to the section stabilizing section, and said gear shaping formation is located at a length of said section stabilizing section from 1/4 to 1/2 of the length of said mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210377085.XA CN114769518B (en) | 2022-04-12 | 2022-04-12 | Extrusion die for thick-wall notch type aluminum alloy product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210377085.XA CN114769518B (en) | 2022-04-12 | 2022-04-12 | Extrusion die for thick-wall notch type aluminum alloy product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114769518A true CN114769518A (en) | 2022-07-22 |
| CN114769518B CN114769518B (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210377085.XA Active CN114769518B (en) | 2022-04-12 | 2022-04-12 | Extrusion die for thick-wall notch type aluminum alloy product |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB406128A (en) * | 1932-02-26 | 1934-02-22 | Ludlow Typograph Co | Improvements relating to casting machines |
| WO1996001707A1 (en) * | 1994-07-08 | 1996-01-25 | Ipsco Inc. | Stationary mold for use with twin-roll caster |
| DE102007026295A1 (en) * | 2006-10-16 | 2007-10-18 | Sintokogio, Ltd., Nagoya | Mold for producing cast part comprises lower mold part with concave section having structure of cast part and upper mold part with convex section having structure of cast part |
| CN201094973Y (en) * | 2007-08-07 | 2008-08-06 | 天津锐新电子热传技术有限公司 | Large tongue core aluminum alloy hot extrusion shaping mold |
| KR101577185B1 (en) * | 2014-08-12 | 2015-12-14 | (주)성진포머 | Manufacturing method of welding tip by forming |
| CN206926174U (en) * | 2017-05-26 | 2018-01-26 | 贵州凯康源新能源机械科技有限公司 | A kind of injection forming mold and molding machine |
| US20200157947A1 (en) * | 2018-11-19 | 2020-05-21 | General Electric Company | Reduced Cross Flow Linking Cavities and Method of Casting |
| EP3858505A1 (en) * | 2020-01-28 | 2021-08-04 | Adex B.V. | Extrusion die |
| CN214263646U (en) * | 2020-10-28 | 2021-09-24 | 思维精密工具（天津）有限公司 | Production of radiator fin is with lubricated type low wearing and tearing hobbing cutter |
-
2022
- 2022-04-12 CN CN202210377085.XA patent/CN114769518B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB406128A (en) * | 1932-02-26 | 1934-02-22 | Ludlow Typograph Co | Improvements relating to casting machines |
| WO1996001707A1 (en) * | 1994-07-08 | 1996-01-25 | Ipsco Inc. | Stationary mold for use with twin-roll caster |
| DE102007026295A1 (en) * | 2006-10-16 | 2007-10-18 | Sintokogio, Ltd., Nagoya | Mold for producing cast part comprises lower mold part with concave section having structure of cast part and upper mold part with convex section having structure of cast part |
| CN201094973Y (en) * | 2007-08-07 | 2008-08-06 | 天津锐新电子热传技术有限公司 | Large tongue core aluminum alloy hot extrusion shaping mold |
| KR101577185B1 (en) * | 2014-08-12 | 2015-12-14 | (주)성진포머 | Manufacturing method of welding tip by forming |
| CN206926174U (en) * | 2017-05-26 | 2018-01-26 | 贵州凯康源新能源机械科技有限公司 | A kind of injection forming mold and molding machine |
| US20200157947A1 (en) * | 2018-11-19 | 2020-05-21 | General Electric Company | Reduced Cross Flow Linking Cavities and Method of Casting |
| EP3858505A1 (en) * | 2020-01-28 | 2021-08-04 | Adex B.V. | Extrusion die |
| CN214263646U (en) * | 2020-10-28 | 2021-09-24 | 思维精密工具（天津）有限公司 | Production of radiator fin is with lubricated type low wearing and tearing hobbing cutter |
Non-Patent Citations (2)
| Title |
|---|
| 王英, 夏巨谌, 胡国安, 杨雨春: "气门温热挤压模具的优化设计", 锻压技术, no. 01, 25 February 1998 (1998-02-25) * |
| 胡龙飞;刘全坤;冯秋红;: "基于共形映射的壁板型材挤压模具型腔建模", 机械工程学报, no. 08, 15 August 2008 (2008-08-15), pages 186 - 190 * |
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| CN114769518B (en) | 2024-07-19 |
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