CN102581055A - Extrusion die for preparation of flat pipes of micro-channel heat exchangers - Google Patents
Extrusion die for preparation of flat pipes of micro-channel heat exchangers Download PDFInfo
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- CN102581055A CN102581055A CN2012100601095A CN201210060109A CN102581055A CN 102581055 A CN102581055 A CN 102581055A CN 2012100601095 A CN2012100601095 A CN 2012100601095A CN 201210060109 A CN201210060109 A CN 201210060109A CN 102581055 A CN102581055 A CN 102581055A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001192 hot extrusion Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 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
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The invention discloses an extrusion die for the preparation of flat pipes of micro-channel heat exchangers. The extrusion die comprises a divergent die, a cavity die, a core rod, a main die sleeve and a die bush, wherein the divergent die is provided with a divergent bridge, the two sides of the divergent bridge are provided with two divergent holes, and a pressure-bearing surface of the divergent die is a semispherical surface or an involute curved surface; the cavity die is provided with a welding chamber and a cavity; the core rod is removably provided with a die core, and the core rod is provided with a step and connected with the divergent die; the main die sleeve and the die bush are respectively matched with the divergent die and the cavity die; after the divergent die, the cavity die and the core rod are assembled, the obtained assembled object is integrally embedded in the main die sleeve, and finally, the main die sleeve is connected with the die bush. According to the invention, the integral stress condition of the die can be improved, and the extrusion force is reduced; and the divergent die and the cavity die can be used repeatedly and can be matched with different die cores, therefore, the production efficiency can be greatly improved, and the manufacturing and maintenance costs of the die can be reduced.
Description
Technical field
The present invention relates to a kind of mould, be specifically related to a kind of extrusion die of micro-channel heat exchanger flat tube, be mainly used in the extrusion modling of heat exchanger flat tube, belong to the mold machining technology field.
Background technology
The heat exchanger flat tube is the essential parts of equipment such as air-conditioning.Along with the develop rapidly of Domestic Automotive Industry and the continuous introduction of advanced foreign technology, the demand of automotive heat exchanger flat tube grows with each passing day.Though domestic have an aluminium section bar extrusion production factory of hundreds of family, because of its section configuration is complicated, dimensional accuracy is high, the production difficulty is big.Be production high technology content, high value-added product, and developed this extrusion die.
The ubiquitous shortcoming of extrusion die of present heat exchanger flat tube:
1, the pressure-bearing surface of traditional divergent die adopts the plane, bears the pressure capability deficiency, causes shorten greatly die life; And for the shortcoming of the undercapacity of pressure-bearing surface, general what adopt is the thickness that increases the shunting bridge, can increase the weight of mould like this, also can increase cost simultaneously.
2, the structure of traditional core rod and divergent die is generally integral type, and this form all must supporting corresponding divergent die for the extrusion die of different model, and processing cost is higher.In addition, extrusion die is more, has inconvenience at storage and management aspect.
3, traditional moulds basically all is made up of cover divergent die, a swaging die, plug, main die sleeve and lining die sleeve, i.e. the squeeze mode of " goes out ", and production efficiency is low.
Through prior art is retrieved; Publication number is 101912894A; Application number: 201010254911.9, name is called the Chinese invention patent application of hot-extrusion parallel stream flat pipe assembling die, this invention " a kind of hot-extrusion parallel stream flat pipe assembling die is disclosed; belong to the extrudate mould, particularly be a kind of automobile air conditioner parallel flow flat tube mould.It comprises cope match-plate pattern, with close-fitting lower bolster of cope match-plate pattern and the core rod in the cope match-plate pattern intermediate throughholes; The cope match-plate pattern middle part is provided with tap hole; The lower bolster middle part is provided with the seam chamber, and the core rod through hole (3) that described cope match-plate pattern (1) is provided with flexibly connects with core rod (4)." though this patent can bring certain effect, the above-mentioned several problems of still failing well to solve.
Summary of the invention
First purpose of the present invention is to provide a kind of extrusion die of micro-channel heat exchanger flat tube, and this mould adopts the removable structure of mold insert, has overcome the processing cost problem of higher.
For realizing above-mentioned purpose, the extrusion die of micro-channel heat exchanger flat tube of the present invention comprises:
Have the divergent die of shunting bridge, two tap holes are arranged on shunting bridge both sides, and there is the plug jack at shunting bridge place;
The swaging die that has weldering chamber and die cavity with the same quantity of divergent die; This swaging die independently is installed on the divergent die;
With the detachable of the same quantity of divergent die and have the plug of core rod; This plug independently is arranged on the divergent die;
Main die sleeve that matches with divergent die and swaging die and lining die sleeve;
The main die sleeve of whole embedding after said divergent die, swaging die and plug assembling are accomplished connects main die sleeve and lining die sleeve at last, forms the extrusion die of micro-channel heat exchanger flat tube.
The present invention uses the removable structure of mold insert, changes more conveniently after any damage parts, has overcome the processing cost problem of higher, has more reduced difficulty of processing, saves the mould manufacturing expense.
On the basis that above-mentioned first purpose realizes, another purpose of the present invention is to solve that pressure-bearing surface bears the pressure capability deficiency in the existing mold, causes the problem that shortens greatly die life.The present invention is for addressing this problem, with the pressure-bearing surface employing hemisphere face or the involute surface design of said divergent die.
Preferably, the present invention's plug of having a core rod is independent of divergent die; Plug adopts stepped form to be connected with divergent die.
Preferably, to assemble the plug and the formed pressure-bearing surface of divergent die of completion be complete hemisphere face or involute surface in the present invention.
Preferably, tap hole axis of the present invention is then corresponding to have a certain degree with mold center's axis, such as acute angle.
Based on technique scheme; Still a further object of the present invention is to solve the squeeze mode of existing mold " one goes out one "; The problem that production efficiency is low; The present invention can adopt two covers or above divergent die, plug and the swaging die assembling of two covers to accomplish back and main die sleeve and the combination of lining die sleeve, a whole set of mould of formation " one go out many ".This shows that the present invention adopts the squeeze mode of " go out many ", can enhance productivity greatly.
Preferably, the present invention's distribution of assembling all divergent dies after the completion should be followed the center symmetry principle.
Preferably, the present invention assembles each divergent die after the completion center of the main die sleeve of distance is near as far as possible.
Preferably, form and main die sleeve that divergent die of the present invention adopts the location to cut edge are circumferentially located, and can better meet the circumferential positioning requirements of divergent die.
Preferably, swaging die of the present invention adopts " square " circumferentially form location, and it is more firm to locate.
Compared with prior art, the present invention has following beneficial effect:
At first, the present invention is not limited to traditional mode of combination up and down that diffluence combination die adopted, but innovation ground uses the removable structure of mold insert.On the divergent die that contains tap hole and shunting bridge; Can independently respectively install and contain core rod; The part of seam chamber and die cavity, change after any damage parts more convenient, especially for easy loss part as the core rod; Design has more reduced difficulty of processing like this, the mould manufacturing expense of saving.
Secondly, traditional divergent die pressure-bearing surface all is the plane, in order to reduce extruding force, improves die life, changes the pressure-bearing surface of divergent die into hemisphere face or involute surface by the plane and can reduce the mold stresses that the extruding force by super large causes.The tap hole axis should with mold center's axis α that has a certain degree, can help metal flow like this, reduce flow resistance.
Once more, can accomplish the back by two covers or above divergent die, plug and the swaging die assembling of two covers and be combined into a mold with main die sleeve and lining die sleeve, the mould of formation " one go out many " is greatly improved production efficiency.
At last, swaging die changes more firm " square " positioning form into by the circumferential positioning form of traditional cylindrical form and key.A kind of mode of side cut is adopted in the circumferential location of divergent die and main die sleeve, and this mode not only can satisfy the circumferential positioning requirements of divergent die, and can guarantee that the core of main die sleeve has enough intensity.
In sum, the extrusion die of the micro-channel heat exchanger flat tube that the present invention is above-mentioned has the reliability height, enhances productivity, and characteristics such as reduce production costs.
Description of drawings
Fig. 1 is the exploded perspective view of the extrusion die of one embodiment of the invention micro-channel heat exchanger flat tube.
Fig. 2 is the exploded perspective view of the build-up member of one embodiment of the invention divergent die, swaging die and plug.
Fig. 3 is the main die sleeve sketch map of one embodiment of the invention.
Fig. 4 is the plug sketch map of one embodiment of the invention.
Fig. 5 is the divergent die sketch map of one embodiment of the invention.
Fig. 6 is the swaging die sketch map of one embodiment of the invention.
Fig. 7 is the lining die sleeve sketch map of one embodiment of the invention.
Fig. 8 is the Facad structure sketch map of extrusion die of the micro-channel heat exchanger flat tube of one embodiment of the invention.
Fig. 9 is an A-A generalized section shown in Figure 8.
Figure 10 is a B-B generalized section shown in Figure 8.
Figure 11 is the structural representation of a kind of micro-channel heat exchanger flat tube of embodiment of the invention preparation.
Among the figure: main die sleeve 1, plug 2, divergent die 3, swaging die 4, lining die sleeve 5, bolt 6, pin 7; Screwed hole 1.1, pin-and-hole 1.2, die cavity 1.3, step 2.1, core rod 2.2, tap hole 3.1, shunting bridge 3.2, plug jack 3.3, pressure-bearing surface 3.4, location side cut 3.5, seam chamber 4.1, die cavity 4.2, through hole 5.1, pin-and-hole 5.2, discharge opening 5.3.
The specific embodiment
Elaborate in the face of embodiments of the invention down, present embodiment is a prerequisite with technical scheme of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Referring to Fig. 1, be the exploded perspective view of one embodiment of the invention extrusion die, the extrusion die of the micro-channel heat exchanger flat tube that wherein relates to comprises two cover divergent die 3, plug 2 and swaging dies 4, can realize the fashion of extrusion of " goes out two ".This mould is when assembling, at first with two cover divergent dies 3, plug 2 and swaging die 4 assemblings; The parts of assembling completion before are embedded in the main die sleeve 1 again, with 7 liang of screws 6 of two pins main die sleeve are connected with lining die sleeve 5.
Referring to Fig. 2, be the exploded perspective view of the build-up member of one embodiment of the invention divergent die, swaging die and plug, among the figure, plug 2, divergent die 3 and swaging die 4, wherein swaging die 4 is installed on the divergent die 3; The plug 2 that has core rod independently is arranged in the plug jack 3.3 of divergent die 3; Plug 2, swaging die 4 are positioned at the relative both sides of divergent die 3.
Referring to Fig. 3, be the main die sleeve sketch map of one embodiment of the invention.Main die sleeve 1 is provided with screwed hole 1.1, pin-and-hole 1.2, die cavity 1.3 among the figure, be used for plug 2, divergent die 3 and swaging die 4 assemblings after integral body be connected and fix.
Referring to Fig. 4, the plug 2 that has core rod 2.2 is independent of divergent die 3, and plug 2 adopts the form of step 2.1 to be connected with divergent die 3, can satisfy the requirement that bears immense pressure.
Based on above structure, present embodiment uses the removable structure of mold insert, changes more conveniently after any damage parts, has overcome the processing cost problem of higher, has more reduced difficulty of processing, the mould manufacturing expense of saving.
Referring to Fig. 5, in another embodiment of the present invention, the pressure-bearing surface of divergent die 3 3.4 adopts hemisphere face or involute surfaces, can reduce the mold stresses that the extruding force by super large causes.Shunting bridge 3.2 both sides are furnished with tap hole 3.1; The shunting bridge portion has plug jack 3.3; The mode of side cut 3.5 is adopted in the circumferential location of divergent die 3 and main die sleeve 1; This mode not only can satisfy the circumferential positioning requirements of divergent die, and can guarantee that the core of main die sleeve has enough intensity.
Referring to Fig. 6, in another embodiment of the present invention, the swaging die 4 that has weldering chamber 4.1 and die cavity 4.2 adopts " square " circumferentially positioning form, and this locate mode is more reliable, improves the reliability of a whole set of mould.
Referring to Fig. 7, be the lining die sleeve sketch map of one embodiment of the invention.Lining die sleeve 5 is provided with through hole 5.1, pin-and-hole 5.2, discharge opening 5.3 among the figure.
Referring to Fig. 8-10, Fig. 8 is the Facad structure sketch map of extrusion die of the micro-channel heat exchanger flat tube of one embodiment of the invention; Fig. 9 is an A-A generalized section shown in Figure 8; Figure 10 is a B-B generalized section shown in Figure 8.As can be seen from the figure, this mould comprises:
Have the divergent die 3 of shunting bridge 3.2, two tap holes 3.1 of shunting bridge both sides layout, there is plug jack 3.3 at shunting bridge place, and the pressure-bearing surface 3.4 of divergent die adopts hemisphere face or involute surfaces, adopts the form and the main die sleeve 1 of location side cut 3.5 circumferentially to locate;
The swaging die 4 that has weldering chamber 4.2 and die cavity 4.1 with the same quantity of divergent die;
With the detachable of the same quantity of divergent die and have the plug 2 of core rod 2.2, plug has step 2.1 and is connected with divergent die;
Main die sleeve 1 that matches with divergent die and swaging die and lining die sleeve 5.After accomplishing, two cover divergent dies 3, plug 2 and swaging die 4 assemblings, form a whole set of mould with main die sleeve 1 and 5 combinations of lining die sleeve.
Referring to Figure 10, tap hole 3.1 axis then should with mold center's axis α (α is preferably 20 °～40 ° acute angle) that has a certain degree, can help metal flow like this, reduce flow resistance.
Among the above embodiment, plug 2 and divergent die 3 formed pressure-bearing surfaces that assembling is accomplished are complete hemisphere face or involute surface.
From front view, the distribution of all divergent dies 3 after assembling is accomplished should be followed the center symmetry principle.
From front view, each divergent die 3 after assembling is accomplished is answered the center of as close as possible main die sleeve 1.
Among the above embodiment, the divergent die 3 in the mould can be reused with swaging die 4, and can mate different core rod 2.2, and divergent die 3 can be reused with swaging die 4, has greatly reduced processing cost.
Embodiment adopts the aluminum alloy solid ingot casting, assembled this mould after, under the effect of extruder extruding force, metal is split into two strands of metal flows in each divergent die through the tap hole 3.1 in the divergent die 3 time.Afterwards, metal comes together in the seam chamber 4.1 once more, in the die cavity 4.2 of high temperature, high pressure, high vacuum again by seam.Flow out through core rod on the plug 2 2.2 and die cavity 4.2 formed gaps then, pass the discharge opening of lining die cavity at last, form the micro-channel heat exchanger flat tube that meets the certain size requirement at last, the shape of flat tube and size are by core rod and die cavity decision.Referring to Figure 11, the structural representation of a kind of micro-channel heat exchanger flat tube that relates to for present embodiment.
Should be noted that; Mould among the above embodiment also can adopt after the above divergent die 3 of two covers, plug 2 and the swaging die 4 assembling completion and main die sleeve 1 and 5 combinations of lining die sleeve; " one's go out many " who forms a whole set of mould; The operation principle of a whole set of mould of " go out many " is identical with the mould of mode and above-mentioned two cover divergent dies 3, plug 2 and swaging die 4 combinations, can enhance productivity greatly.
To sum up, adopt after the technique scheme, the present invention has overcome the processing cost problem of higher, has more reduced difficulty of processing, the mould manufacturing expense of saving; Can improve the mold integral stressing conditions, reduce extruding force; Divergent die and swaging die can be reused, and can mate different core rods, therefore, can enhance productivity greatly, reduce mould manufacturing and maintenance cost.
Below only be the detailed description that preferred embodiment of the present invention is carried out, but the present invention is not limited to above embodiment.It should be understood that the various modifications that those skilled in the art makes still belong to scope of the present invention under the spirit and scope situation of the claim that does not break away from the application.
Claims (10)
1. the extrusion die of a micro-channel heat exchanger flat tube is characterized in that said mould comprises:
The divergent die (3) that has shunting bridge (3.2), two tap holes (3.1) are arranged on shunting bridge (3.2) both sides, shunting bridge (3.2) has been located plug jack (3.3);
The swaging die (4) that has weldering chamber (4.2) and die cavity (4.1) with the same quantity of divergent die (3); This swaging die (4) independently is installed on the divergent die (3);
With the detachable of the same quantity of divergent die (3) and have the plug (2) of core rod (2.2), this plug (2) independently is arranged on the divergent die (3);
Main die sleeve (1) that matches with divergent die (3) and swaging die (4) and lining die sleeve (5);
The whole main die sleeve (1) that embeds after said divergent die (3), swaging die (4) and plug (2) assembling are accomplished connects main die sleeve (1) and lining die sleeve (5) at last.
2. the extrusion die of a kind of micro-channel heat exchanger flat tube according to claim 1 is characterized in that: said plug (2) has step (2.1), and plug (2) adopts stepped form to be connected with divergent die (3).
3. the extrusion die of a kind of micro-channel heat exchanger flat tube according to claim 1 is characterized in that: the pressure-bearing surface of said divergent die (3) adopts hemisphere face or involute surface.
4. the extrusion die of a kind of micro-channel heat exchanger flat tube according to claim 3 is characterized in that: plug (2) and the formed pressure-bearing surface of divergent die (3) that assembling is accomplished are complete hemisphere face or involute surface.
5. the extrusion die of a kind of micro-channel heat exchanger flat tube according to claim 1 is characterized in that: a kind of mode of side cut is adopted in the circumferential location of said divergent die (3) and main die sleeve (1).
6. the extrusion die of a kind of micro-channel heat exchanger flat tube according to claim 1 is characterized in that: said swaging die (4) adopts " square " circumferentially form location.
7. according to the extrusion die of each described a kind of micro-channel heat exchanger flat tube of claim 1-6, it is characterized in that: said tap hole (3.1) axis becomes 20 °～40 ° acute angle with the mold center axis.
8. according to the extrusion die of each described a kind of micro-channel heat exchanger flat tube of claim 1-6; It is characterized in that: said divergent die (3), plug (2) and swaging die (4) are more than two covers or two overlap; After accomplishing, above divergent die (3), plug (2) and swaging die (4) assembling of this two cover or two covers, form a whole set of mould with main die sleeve (1) and lining die sleeve (5) combination.
9. according to the extrusion die of claim 1 or 8 described a kind of micro-channel heat exchanger flat tubes, it is characterized in that: the distribution of all divergent dies (3) after assembling is accomplished should be followed the center symmetry principle.
10. according to the extrusion die of claim 1 or 8 described a kind of micro-channel heat exchanger flat tubes, it is characterized in that: each divergent die (3) after assembling is accomplished is answered the center of as close as possible main die sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100601095A CN102581055A (en) | 2012-03-09 | 2012-03-09 | Extrusion die for preparation of flat pipes of micro-channel heat exchangers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100601095A CN102581055A (en) | 2012-03-09 | 2012-03-09 | Extrusion die for preparation of flat pipes of micro-channel heat exchangers |
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| CN102581055A true CN102581055A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100601095A Pending CN102581055A (en) | 2012-03-09 | 2012-03-09 | Extrusion die for preparation of flat pipes of micro-channel heat exchangers |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464503A (en) * | 2013-09-26 | 2013-12-25 | 张家港市宏基铝业有限公司 | Aluminum profile extrusion die |
| CN105149375A (en) * | 2015-09-23 | 2015-12-16 | 江苏大学 | Supercharged multichannel pipe divergent die composite die core |
| CN110290882A (en) * | 2017-02-13 | 2019-09-27 | 株式会社Uacj | Aluminum extruded flat porous tube having excellent brazeability and method of manufacturing the same |
| CN111760926A (en) * | 2020-07-14 | 2020-10-13 | 江苏江顺精密科技集团有限公司 | Inserted extrusion die of flat tubular section bar of super high microchannel |
| CN114345971A (en) * | 2022-01-20 | 2022-04-15 | 山东大学 | Microchannel tube forming die and method |
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| CN102189147A (en) * | 2011-04-07 | 2011-09-21 | 聊城万邦新金属材料有限公司 | Micro channel flat pipe mould for horizontal type hot-extrusion |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464503A (en) * | 2013-09-26 | 2013-12-25 | 张家港市宏基铝业有限公司 | Aluminum profile extrusion die |
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| CN105149375A (en) * | 2015-09-23 | 2015-12-16 | 江苏大学 | Supercharged multichannel pipe divergent die composite die core |
| WO2017049668A1 (en) * | 2015-09-23 | 2017-03-30 | 江苏大学 | Combined mold core for supercharged multichannel pipe divergent mold |
| GB2556820A (en) * | 2015-09-23 | 2018-06-06 | Univ Jiangsu | Combined mold core for supercharged multichannel pipe divergent mold |
| GB2556820B (en) * | 2015-09-23 | 2021-09-15 | Univ Jiangsu | A Combined Mold Core for Supercharged Multichannel Pipe Divergent Die |
| CN110290882A (en) * | 2017-02-13 | 2019-09-27 | 株式会社Uacj | Aluminum extruded flat porous tube having excellent brazeability and method of manufacturing the same |
| CN110290882B (en) * | 2017-02-13 | 2021-07-13 | 株式会社Uacj | Aluminum extruded flat porous tube with excellent brazing properties and method for producing the same |
| CN111760926A (en) * | 2020-07-14 | 2020-10-13 | 江苏江顺精密科技集团有限公司 | Inserted extrusion die of flat tubular section bar of super high microchannel |
| CN114345971A (en) * | 2022-01-20 | 2022-04-15 | 山东大学 | Microchannel tube forming die and method |
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Effective date of registration: 20130911 Address after: 213300 Changzhou Province, Liyang City Industrial Zone on the Yellow River Road, No. 5, No. Applicant after: Changzhou Xianglong Metallurgical Equipment Co., Ltd. Address before: 214434 Chengjiang Middle Road, Wuxi, Jiangsu, China, No. 159, No. Applicant before: Wuxi CanBe Mechanical and Electrical Technology Co., Ltd. |
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Application publication date: 20120718 |