CN114669732A - Aluminum alloy extrusion die of long fin heat radiation structure - Google Patents
Aluminum alloy extrusion die of long fin heat radiation structure Download PDFInfo
- Publication number
- CN114669732A CN114669732A CN202210413637.8A CN202210413637A CN114669732A CN 114669732 A CN114669732 A CN 114669732A CN 202210413637 A CN202210413637 A CN 202210413637A CN 114669732 A CN114669732 A CN 114669732A
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- Prior art keywords
- die
- forming
- aluminum alloy
- channel
- fin
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 34
- 238000001125 extrusion Methods 0.000 title claims abstract description 19
- 230000005855 radiation Effects 0.000 title description 2
- 230000017525 heat dissipation Effects 0.000 claims abstract description 20
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 238000005452 bending Methods 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 12
- 238000000465 moulding Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000005121 nitriding Methods 0.000 description 2
- 244000126211 Hericium coralloides Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003466 welding Methods 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
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0063—Casting in, on, or around objects which form part of the product finned exchangers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses an aluminum alloy extrusion die with a long fin heat dissipation structure, which comprises a gate die and a forming die which are mutually overlapped, the gate mold is provided with a gate channel including a straight channel near an inlet side of the gate mold and a flared channel near an outlet side of the gate mold, the forming die is provided with a plurality of die fins and forming channels, the straight channels correspond to the head parts of the die fins, the flaring channel extends towards the root of the die fin with a flaring slope angle larger than that extending towards the bottom side of the forming channel, a comb-shaped core plate is arranged in the sprue channel of the sprue mold, the comb-shaped core plate is provided with a plurality of comb teeth arranged towards the forming mold, the comb teeth are clamped with the head parts of the die fins, and gaps are reserved between the root parts of the comb teeth and the inlet side end faces of the forming die. The invention can reduce the bending of the die fin and improve the product quality.
Description
Technical Field
The invention relates to an aluminum alloy product extrusion die, in particular to an aluminum alloy extrusion die with a long fin heat dissipation structure.
Background
The main purpose of the long-fin heat dissipation structure is to increase the heat dissipation area as much as possible by using fins with slender sections, and the gaps between the fins are set to be smaller and smaller. For producing such products, need set up the mould fin corresponding with the clearance of fin on extrusion die, these mould fins are the same cross-section slim, and the interval (equal to radiator fin thickness) is less, put forward higher requirement to the mould design, the main difficulty that faces is the feed equilibrium that needs to consider fin structure and other positions, need more aluminum alloy material at the fin according to the most advanced that corresponds to the mould fin, and more aluminum alloy material is when flowing through the most advanced of mould fin, produce the side action to the mould fin, but the difficult translation of both sides side action is difficult, then lead to the mould fin to buckle easily, influence finished product quality.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an aluminum alloy extrusion die with a long fin heat dissipation structure, and aims to solve the problem that a die fin is bent under the action of a flowing aluminum alloy material.
The technical scheme of the invention is as follows: an aluminum alloy extrusion die with a long fin heat dissipation structure comprises a gate die and a forming die which are mutually overlapped, the gate mold is provided with a gate channel including a straight channel near an inlet side of the gate mold and a flared channel near an outlet side of the gate mold, the forming die is provided with a plurality of die fins and forming channels, the straight channels correspond to the head parts of the die fins, the flaring channel extends towards the root of the die fin with a flaring slope angle larger than that extending towards the bottom side of the forming channel, a comb-shaped core plate is arranged in the sprue channel of the sprue mold, the comb-shaped core plate is provided with a plurality of comb teeth arranged towards the molding mold, the comb teeth are clamped with the head parts of the die fins, and gaps are reserved between the root parts of the comb teeth and the inlet side end faces of the forming die.
Furthermore, inserting grooves are formed in two sides of the forming channel on the forming die, side plates matched with the inserting grooves are arranged on two sides of the comb-shaped core plate, and the side plates are inserted into the inserting grooves.
Furthermore, the front end face of the comb teeth is provided with a V-shaped groove, and the end part of the die fin is provided with a wedge matched with the V-shaped groove. The V-shaped groove and the wedge-shaped groove are matched to enable the pouring gate mold to be combined with the forming mold, the comb-shaped core plate and the mold fin can be easily butted and positioned, and staggered damage is avoided.
Furthermore, in order to ensure that the aluminum alloy material has an angle enough and uniformly flowing after passing over the comb-shaped core plate, the aluminum alloy material can be fully fused to form fins, and simultaneously ensure that the die fins have enough stability, the distance between the root of the comb teeth and the end face of the inlet side of the forming die is 5-10 mm.
Furthermore, the depth of the V-shaped groove is 1-3 times of the thickness of the die fin.
Further, forming die includes body and a plurality of grafting piece, the mould fin set up in the grafting piece, the grafting piece with the body cooperation of pegging graft.
Furthermore, the inserting block is provided with a dovetail clamping tenon, and the thickness of the dovetail clamping tenon is smaller than that of the forming die.
Further, the thickness of the dovetail clamping tenon is 1/3-1/2 of the thickness of the forming die.
The technical scheme provided by the invention has the advantages that:
the material flow rate of the aluminum alloy entering the roots of the fins of the die is adjusted through the large-angle flaring slope surfaces extending to the roots of the fins of the die, so that the material flow rate of the aluminum alloy entering the roots of the fins of the die is matched with the material flow rate of the aluminum alloy forming the roots of the fins, and the quality of finished products is improved. Meanwhile, the direct impact of the aluminum alloy material on the head of the die fin is reduced, the comb-shaped core plate and the head of the die fin are used for structural reinforcement, the head of the die fin can be effectively prevented from being bent under the condition that the pressures of the aluminum alloy materials on the two sides are different, and the accuracy of the size of each fin after the product is formed is further ensured.
Drawings
Fig. 1 is a schematic structural diagram of long fin heat dissipation.
Fig. 2 is a schematic front view of an aluminum alloy extrusion die with a long fin heat dissipation structure.
Fig. 3 is a schematic sectional view a-a of the gate mold of fig. 2.
Fig. 4 is a front view schematically showing the molding die.
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.
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 equivalent modifications within the scope of the following claims.
Referring to fig. 1, in the long fin heat dissipation structure to be extruded by the aluminum alloy extrusion die of the long fin heat dissipation structure according to the embodiment of the present invention, fins 200 with a long and thin cross section are sequentially arranged on a base plate 100, and gaps between the fins 200 are also small. Referring to fig. 2 to fig. 6, the aluminum alloy extrusion die of the long fin heat dissipation structure of the present embodiment includes a gate die 1 and a forming die 2 stacked on each other, wherein a gate channel 3 of the gate die 1 initially guides an aluminum alloy material to the forming die 2 and extrudes the aluminum alloy material from a forming channel 4 of the forming die 2 to obtain a formed product.
The forming die 2 comprises a body 201 and a plurality of inserting blocks 202, wherein the inserting blocks 202 are made of 9Cr18 materials, and the surface of the inserting blocks is subjected to nitriding treatment, so that the heat resistance and the wear resistance of the inserting blocks are improved. Each plug block 202 is provided with a plurality of die fins 203, a gap left between the die fin 203 of the plug block 202 and the body 201 forms a forming channel 4, and the section of the forming channel 4 is the same as that of the long fin heat dissipation structure. The lower part of the insertion block 202 is provided with a die fin 203, the upper part of the insertion block 202 is provided with a dovetail clamping tenon 204, the thickness of the dovetail clamping tenon 204 is smaller than that of the forming die 2, and the thickness of the dovetail clamping tenon 204 is generally 1/3-1/2 of that of the forming die 2. A groove with the depth corresponding to the thickness of the dovetail tenon 204 is formed in the forming die 2, and the plug block 202 is inserted from the inlet end face of the forming die 2 and keeps the end face flush.
The gate mold 1 is provided with a gate channel 3, the gate channel 3 has a flat inlet on the inlet side, the gate channel 3 is a straight channel 301 directly extending along the thickness direction of the gate mold 1 from the inlet on the inlet side close to the gate mold 1, the upper side and the lower side of the straight channel 301 are gradually inclined upwards and downwards to form a flared channel 302 on the outlet side close to the gate mold 1, and the cross section of the flared channel 302 gradually reaches the size of a finished product. The position of the straight channel 301 corresponds to the head position of the die fin 203 in the forming die 2, so that feeding of the bottom forming of products is guaranteed, the upper side flaring slope angle of the flaring channel 302 is large, the upper side flaring slope angle of the opposite flaring channel 302 is small, and aluminum alloy materials entering from the straight channel 301 form a certain upward flowing angle in the flaring channel 302.
A comb-shaped core plate 5 is arranged in a sprue channel 3 of the sprue mold 1, the comb-shaped core plate 5 is also made of 9Cr18 material, and the surface of the comb-shaped core plate is subjected to nitriding treatment. The comb-shaped core plate 5 is fixedly connected with the sprue mold 1. The comb-shaped core plate 5 is provided with a plurality of comb teeth 501 arranged towards the forming die 2, the number of the comb teeth 501 is adapted to the number of the die fins 203 of the forming die 2, and each die fin 203 corresponds to one comb tooth 501. The two sides of the molding passage 4 on the molding die 2 are provided with insertion grooves 205, the two sides of the comb-shaped core plate 5 are provided with side plates 502 which are matched with the insertion grooves 205, and when the sprue die 1 is matched with the molding die 2, the side plates 502 are inserted into the insertion grooves 205. The front end face of the comb teeth 501 is provided with a V-shaped groove, the end part of the die fin 203 is provided with a wedge matched with the V-shaped groove, and when the side plate 502 is inserted into the insertion groove 205, the comb teeth 501 and the head part of the die fin 203 complete clamping. The degree of depth L2 of V-arrangement groove is 1 ~ 3 times of mould fin 203 thickness, guarantees that broach 501 has reliable enhancement effect to mould fin 203, when the aluminum alloy material stream was through mould fin 203's both sides, because the joint with broach 501 was fixed a position, mould fin 203 was difficult to produce the horizontal hunting. The blocking of the comb-shaped core plate 5 affects the welding of the aluminum alloy material in the molding channel between the mold fins 203, so the comb teeth 501 are not too short, a gap L1 of 5-10 mm is left between the root of the comb teeth 501 and the end face of the inlet side of the molding mold 2, and the aluminum alloy can flow uniformly to be sufficiently welded.
Claims (8)
1. An aluminum alloy extrusion die with a long fin heat dissipation structure comprises a gate die and a forming die which are mutually overlapped, characterized in that the gating mold is provided with a gate channel comprising a straight channel close to an inlet side of the gating mold and a flared channel close to an outlet side of the gating mold, the forming die is provided with a plurality of die fins and forming channels, the straight channels correspond to the head parts of the die fins, the flaring channel extends towards the root of the die fin with a flaring slope angle larger than that extending towards the bottom side of the forming channel, a comb-shaped core plate is arranged in the sprue channel of the sprue mold, the comb-shaped core plate is provided with a plurality of comb teeth arranged towards the forming mold, the comb teeth are clamped with the head parts of the die fins, and gaps are reserved between the root parts of the comb teeth and the inlet side end faces of the forming die.
2. The aluminum alloy extrusion die of the long-fin heat dissipation structure as recited in claim 1, wherein insertion grooves are formed on both sides of the forming passage on the forming die, side plates which are axially matched with the insertion grooves are formed on both sides of the comb-shaped core plate, and the side plates are inserted into the insertion grooves.
3. The aluminum alloy extrusion die of a long-fin heat dissipation structure as recited in claim 1, wherein the front end surfaces of the comb teeth are provided with V-shaped grooves, and the ends of the die fins are provided with wedges fitted to the V-shaped grooves.
4. The aluminum alloy extrusion die of a long-fin heat dissipation structure as recited in claim 1, wherein a distance between a root of the comb teeth and an inlet side end face of the forming die is 5 to 10 mm.
5. The aluminum alloy extrusion die for the long-fin heat dissipation structure as recited in claim 3, wherein the depth of the V-shaped groove is 1 to 3 times the thickness of the die fin.
6. The aluminum alloy extrusion die of the long-fin heat dissipation structure as recited in claim 1, wherein the forming die comprises a body and a plurality of insertion blocks, the die fins are arranged on the insertion blocks, and the insertion blocks are in insertion fit with the body.
7. The aluminum alloy extrusion die of a long-fin heat dissipation structure as recited in claim 6, wherein the insertion block is provided with a dovetail joint, and the thickness of the dovetail joint is smaller than that of the forming die.
8. The aluminum alloy extrusion die for the long-fin heat dissipation structure of claim 7, wherein the thickness of the dovetail joint is 1/3-1/2 of the thickness of the forming die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210413637.8A CN114669732A (en) | 2022-04-15 | 2022-04-15 | Aluminum alloy extrusion die of long fin heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210413637.8A CN114669732A (en) | 2022-04-15 | 2022-04-15 | Aluminum alloy extrusion die of long fin heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114669732A true CN114669732A (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210413637.8A Pending CN114669732A (en) | 2022-04-15 | 2022-04-15 | Aluminum alloy extrusion die of long fin heat radiation structure |
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| CN (1) | CN114669732A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098832A (en) * | 2005-10-06 | 2007-04-19 | Nissei Plastics Ind Co | Mold thickness adjusting method of toggle type mold clamping device |
| JP2012156372A (en) * | 2011-01-27 | 2012-08-16 | Arushan Kogyo Co Ltd | Press fitting type heat sink and method of manufacturing the same |
| CN102985197A (en) * | 2010-05-20 | 2013-03-20 | 贝克休斯公司 | Methods of forming at least a portion of earth-boring tools, and articles formed by such methods |
| CN104525871A (en) * | 2014-12-03 | 2015-04-22 | 柳州通为机械有限公司 | Punching tooth forming mould for sedan seat mop tube |
| CN107774963A (en) * | 2016-08-24 | 2018-03-09 | 丰田自动车株式会社 | The manufacture method of radiator |
-
2022
- 2022-04-15 CN CN202210413637.8A patent/CN114669732A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098832A (en) * | 2005-10-06 | 2007-04-19 | Nissei Plastics Ind Co | Mold thickness adjusting method of toggle type mold clamping device |
| CN102985197A (en) * | 2010-05-20 | 2013-03-20 | 贝克休斯公司 | Methods of forming at least a portion of earth-boring tools, and articles formed by such methods |
| JP2012156372A (en) * | 2011-01-27 | 2012-08-16 | Arushan Kogyo Co Ltd | Press fitting type heat sink and method of manufacturing the same |
| CN104525871A (en) * | 2014-12-03 | 2015-04-22 | 柳州通为机械有限公司 | Punching tooth forming mould for sedan seat mop tube |
| CN107774963A (en) * | 2016-08-24 | 2018-03-09 | 丰田自动车株式会社 | The manufacture method of radiator |
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