CN102847845A - Manufacturing method for fins with elliptical holes or approximate elliptical holes - Google Patents
Manufacturing method for fins with elliptical holes or approximate elliptical holes Download PDFInfo
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- CN102847845A CN102847845A CN201210315597XA CN201210315597A CN102847845A CN 102847845 A CN102847845 A CN 102847845A CN 201210315597X A CN201210315597X A CN 201210315597XA CN 201210315597 A CN201210315597 A CN 201210315597A CN 102847845 A CN102847845 A CN 102847845A
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Abstract
The invention discloses a manufacturing method for fins with elliptical holes or approximate elliptical holes. According to the manufacturing method, thin strip coils are uncoiled and the uncoiled thin strip coils are conveyed to a stamping die in a stepping manner through a material conveying device; the thin strips are subject to stamping for at least four times in a stepping manner by the stamping die, and then the elliptical holes or approximate elliptical holes are formed on the thin strips; the punched thin strips are cut transversely and longitudinally by a stamping cutter according to the designed sizes to form a plurality of same stripped fins; the fins are sucked upwardly by a top suction machine in a negative pressure manner; and then the fins are released to drop in a material collecting device in a tidy manner; fins with elliptical holes or approximate elliptical holes in through holes can be manufactured by the manufacturing method; the production efficiency is improved, and a heat exchanger manufactured by the fins has the advantages of good heat exchanging effect, high energy efficiency and the like.
Description
Technical field
The present invention relates to fin machining technique, more particularly, relate to the processing method of a kind of elliptical aperture or sub-elliptical hole fin.
Background technology
Current in the equipment of mechanical compression refrigeration, usually can use the heat-exchanger rigs such as condenser, evaporimeter, by the refrigerant loses heat of condenser to HTHP, and then enter indoor by the evaporimeter swelling heat absorption, thereby reach the effect of refrigeration.And the radiating effect of heat-exchanger rig will directly have influence on the refrigeration efficiency of whole refrigeration plant.
Traditional heat-exchanger rig is to adopt disk pipe (radial section is for circular) and be sheathed on radiating fin (perforation also is circle) on the coil pipe, heat and outside air exchange with medium in the pipe, to reach the purpose of heat radiation, its mainly be by wind when radiating fin is blown over dissipation of heat, but because the windage of disk pipe is larger, and there is eddy current in the lee side of disk pipe, so that the back of disk pipe have wind less than the dead angle, therefore had a strong impact on the radiating effect of wind-force, thus the efficient of impact refrigeration.In addition, because medium circulates comparatively smooth and easyly in the disk pipe, flow velocity is very fast, equally also so that radiating effect is not good.The heat-exchange capacity of such heat exchanger is relatively poor, in order to reduce temperature, sometimes need to make the heat exchanger (two rows even three row's disk pipes merge setting) of larger volume, greatly increased so again production cost and technology difficulty, therefore can't satisfy the requirement of highly effective refrigeration.
Summary of the invention
For the above-mentioned shortcoming that exists in the prior art, the purpose of this invention is to provide the processing method of a kind of elliptical aperture or sub-elliptical hole fin, in order to process the fin in elliptical aperture and sub-elliptical hole.
For achieving the above object, the present invention adopts following technical scheme:
The processing method of this elliptical aperture or sub-elliptical hole fin may further comprise the steps:
A. with after the thin coiled stock uncoiling and carry out step-by-step movement by pay-off and be delivered to diel;
B. by diel strip is carried out time punching press of at least four steps, form ellipse or approximate ellipsoidal hole at strip;
C. according to design size, carry out crosscut and rip cutting by the strip of punch die cutter after to punching, form a plurality of identical strip of sheet fins;
D. adopt negative pressure mode that fin is upwards picked up by top suction machine, and fall in the material-gathering device by discharging neatly.
In step B, described punch steps comprises successively: get blisters, punching, rush shutter or corrugated plate, piercing and flanging, wherein getting blisters is at least once.
The described number of times of getting blisters is twice.
Described shutter or corrugated plate all laterally the punching be located between adjacent two punchings, and the opening of the shutter of going out or corrugated plate all be 8 the degree skewed.
In step B, stamping ellipse or approximate ellipsoidal hole are of a size of: the major axis A size range is 7.65mm≤A≤15.5mm, and minor axis B size range is 3.3mm≤B≤6mm.
In step C, the width range of described strip of sheet fin is 13.5mm～30mm.
The closed figure that described approximate ellipsoidal is connected and is combined into straight line for the curve by the curve of some sections different curvature, some sections straight lines or some sections different curvature.
In technique scheme, the processing method of elliptical aperture of the present invention or sub-elliptical hole fin, with after the thin coiled stock uncoiling and carry out step-by-step movement by pay-off and be delivered to diel, by diel strip is carried out time punching press of at least four steps, form ellipse or approximate ellipsoidal hole at strip, according to design size, carry out crosscut and rip cutting by the strip of punch die cutter after to punching, form a plurality of identical strip of sheet fins, adopt negative pressure mode that fin is upwards picked up by top suction machine, and fall in the material-gathering device by discharging neatly.Adopt this processing method can process perforation for the fin in elliptical aperture or sub-elliptical hole, not only provide production efficiency, and the heat exchanger that adopts this fin to make has good effect of heat exchange, efficiency advantages of higher.
Description of drawings
Fig. 1 is the FB(flow block) of processing method of the present invention;
Fig. 2 is the structural representation (shutter) of a kind of fin of processing of the present invention;
Fig. 3 is the structural representation (corrugated plate) of the another kind of fin processed of the present invention;
Fig. 4 is fin and the coil pipe assembling schematic diagram (ellipse) that the present invention processes;
Fig. 5 is fin and the coil pipe assembling schematic diagram (approximate ellipsoidal) that the present invention processes.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
See also Fig. 1～shown in Figure 3, the processing method of elliptical aperture of the present invention or sub-elliptical hole fin may further comprise the steps:
A. with after the thin coiled stock uncoiling and carry out step-by-step movement by pay-off and be delivered to diel;
B. by diel strip is carried out time punching press of at least four steps, form ellipse or approximate ellipsoidal hole 2 at strip; Described few four step time punch steps are included as successively: get blisters, punching, rush shutter or corrugated plate, piercing and flanging, wherein getting blisters is at least once.As an embodiment, described getting blisters is twice, be need to get blisters through twice in same ellipse or approximate ellipsoidal hole 2, one-off hole-piercing and one-off hole-piercing flange could be shaped, and have also carried out once rushing shutter 4 or corrugated plate 5 between punching and flange step.And described shutter 4 or corrugated plate 5 all laterally punching be located between adjacent two punchings, and the opening of the shutter 4 of going out or corrugated plate 5 all to be 8 degree skewed.
C. according to design size and needs, carry out crosscut (control width) and rip cutting (control length) by the strip of punch die cutter after to punching, form a plurality of identical strip of sheet fins, Fig. 2, fin 3 structure charts that are respectively after the cutting shown in Figure 3, a kind of be rush shutter 4, another kind is to rush corrugated plate 5.Wherein, stamping ellipse or approximate ellipsoidal hole 2 are of a size of: the major axis A size range is 7.65mm≤A≤15.5mm, and minor axis B size range is 3.3mm≤B≤6mm, and the width range of strip of sheet fin 3 is 13.5mm～30mm.And the effect of flange 6 is, after coil pipe 1 penetrates fin 3 perforation 2, when swollen hole, can prevent that adjacent fins 3 from stacking, to keep certain intervals.
D. adopt negative pressure mode that fin is upwards picked up by top suction machine, and by release fin is neatly fallen in the material-gathering device.
The closed figure that above-mentioned approximate ellipsoidal is connected and is combined into straight line for the curve by the curve of some sections different curvature, some sections straight lines or some sections different curvature.
The fin 3 that adopts processing method of the present invention to make, be used for the straight length radial section is the heat exchanger (seeing Fig. 4, Fig. 5) of coil pipe 1 assembling of ellipse or approximate ellipsoidal, can greatly reduce the air side flow resistance, side medium has increased wetted perimeter and disturbance, strengthened heat transfer, heat transfer coefficient can improve greatly.When wind blows, can there be eddy current in lee face at the rear portion of coil pipe 1, the windage when therefore greatly reducing heat radiation, and also there is not the heat radiation dead angle in the coil pipe 1 of oval and approximate ellipsoidal, so greatly improved radiating effect, thus heat exchange efficiency improved.And the coil pipe 1 of shape like this, its surface is nearly streamlined, and the wind-force that also can make flows more smooth and easy, further reduces windage, improves the heat exchange efficiency, and the COP value can run to more than 3.2.In addition, like this coil pipe 1 of shape, the speed of flowing through of its interior media is starkly lower than round coil 1, also so that the heat transfer effect of medium further improve.
Detect the check of mechanical industry heat exchanger product quality supervision inspection center of institute through the Hefei general-purpose machinery and electrical applicances, adopt heat-exchanger rig of the present invention, its Coefficient K 〉=86.99W/m
2℃, far above the K 〉=40W/m among the industry standard JB/T 7695.5-1995
2℃ regulation.
In addition, adopt the present invention that the different outdoor machine of air-conditioner heat exchangers of a plurality of famous brand names are in the market transformed, experimental test result and performance comparison before and after transforming are seen such as following table 1～table 3:
Table 1
Table 2
Table 3
By above-mentioned test, proved that equally also heat-exchanger rig of the present invention compares with the prior art that adopts round coil, have a significant effect, cold anharmonic ratio, volume ratio (volume that the specific refrigerating effect air-conditioning is shared), efficiency when all are better than existing heat-exchanger rig on the key technology economic indicator such as manufacturing cost.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (7)
1. the processing method of an elliptical aperture or sub-elliptical hole fin is characterized in that,
May further comprise the steps:
A. with after the thin coiled stock uncoiling and carry out step-by-step movement by pay-off and be delivered to diel;
B. by diel strip is carried out time punching press of at least four steps, form ellipse or approximate ellipsoidal hole at strip;
C. according to design size, carry out crosscut and rip cutting by the strip of punch die cutter after to punching, form a plurality of identical strip of sheet fins;
D. adopt negative pressure mode that fin is upwards picked up by top suction machine, and fall in the material-gathering device by discharging neatly.
2. the processing method of elliptical aperture as claimed in claim 1 or sub-elliptical hole fin is characterized in that,
In step B, described punch steps comprises successively: get blisters, punching, rush shutter or corrugated plate, piercing and flanging, wherein getting blisters is at least once.
3. the processing method of elliptical aperture as claimed in claim 2 or sub-elliptical hole fin is characterized in that:
The described number of times of getting blisters is twice.
4. the processing method of elliptical aperture as claimed in claim 2 or sub-elliptical hole fin is characterized in that:
Described shutter or corrugated plate all laterally the punching be located between adjacent two punchings, and the opening of the shutter of going out or corrugated plate all be 8 the degree skewed.
5. the processing method of elliptical aperture as claimed in claim 1 or sub-elliptical hole fin is characterized in that:
In step B, stamping ellipse or approximate ellipsoidal hole are of a size of: the major axis A size range is 7.65mm≤A≤15.5mm, and minor axis B size range is 3.3mm≤B≤6mm.
6. the processing method of elliptical aperture as claimed in claim 1 or sub-elliptical hole fin is characterized in that:
In step C, the width range of described strip of sheet fin is 13.5mm～30mm.
7. the processing method of elliptical aperture as claimed in claim 1 or sub-elliptical hole fin is characterized in that:
The closed figure that described approximate ellipsoidal is connected and is combined into straight line for the curve by the curve of some sections different curvature, some sections straight lines or some sections different curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315597XA CN102847845A (en) | 2012-08-30 | 2012-08-30 | Manufacturing method for fins with elliptical holes or approximate elliptical holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315597XA CN102847845A (en) | 2012-08-30 | 2012-08-30 | Manufacturing method for fins with elliptical holes or approximate elliptical holes |
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| CN102847845A true CN102847845A (en) | 2013-01-02 |
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| CN201210315597XA Pending CN102847845A (en) | 2012-08-30 | 2012-08-30 | Manufacturing method for fins with elliptical holes or approximate elliptical holes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008491A (en) * | 2013-01-07 | 2013-04-03 | 中山市奥翔机械有限公司 | Aggregating technique and equipment for heat dissipation fins |
| CN103433403A (en) * | 2013-07-15 | 2013-12-11 | 杭州杭氧股份有限公司 | Automatic numerical control fin formation preparing method |
| CN112283794A (en) * | 2020-10-28 | 2021-01-29 | 青岛海信日立空调系统有限公司 | Indoor air conditioner and fin production method |
| CN113523060A (en) * | 2021-07-29 | 2021-10-22 | 上海航天精密机械研究所 | Pipe fitting flanging forming method and pipe fitting |
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| CN1511658A (en) * | 2002-12-26 | 2004-07-14 | �ո߾�����ʽ���� | Method for producing heat exchanger fin and complete mould for producing said fin |
| JP2007008712A (en) * | 2005-07-04 | 2007-01-18 | Hidaka Seiki Kk | Metal strip material feeding device |
| CN102319831A (en) * | 2011-07-20 | 2012-01-18 | 中江机电科技江苏有限公司 | Fin press automatic production line for open type heat exchanger |
| CN202123164U (en) * | 2010-12-27 | 2012-01-25 | 吴海军 | Material receiving device for air conditioning fin stamping production line |
| US20120085805A1 (en) * | 2010-10-08 | 2012-04-12 | Keiichi Morishita | Feeder apparatus for metal strip |
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2012
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Patent Citations (5)
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| CN1511658A (en) * | 2002-12-26 | 2004-07-14 | �ո߾�����ʽ���� | Method for producing heat exchanger fin and complete mould for producing said fin |
| JP2007008712A (en) * | 2005-07-04 | 2007-01-18 | Hidaka Seiki Kk | Metal strip material feeding device |
| US20120085805A1 (en) * | 2010-10-08 | 2012-04-12 | Keiichi Morishita | Feeder apparatus for metal strip |
| CN202123164U (en) * | 2010-12-27 | 2012-01-25 | 吴海军 | Material receiving device for air conditioning fin stamping production line |
| CN102319831A (en) * | 2011-07-20 | 2012-01-18 | 中江机电科技江苏有限公司 | Fin press automatic production line for open type heat exchanger |
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| 何流等: "高精度多工位空调翅片硬质合金级进模的设计", 《硬质合金》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008491A (en) * | 2013-01-07 | 2013-04-03 | 中山市奥翔机械有限公司 | Aggregating technique and equipment for heat dissipation fins |
| CN103433403A (en) * | 2013-07-15 | 2013-12-11 | 杭州杭氧股份有限公司 | Automatic numerical control fin formation preparing method |
| CN103433403B (en) * | 2013-07-15 | 2015-11-25 | 杭州杭氧股份有限公司 | A kind of automatic numerical control fin molding method for preparing |
| CN112283794A (en) * | 2020-10-28 | 2021-01-29 | 青岛海信日立空调系统有限公司 | Indoor air conditioner and fin production method |
| CN112283794B (en) * | 2020-10-28 | 2023-12-12 | 青岛海信日立空调系统有限公司 | Indoor air conditioner and fin production method |
| CN113523060A (en) * | 2021-07-29 | 2021-10-22 | 上海航天精密机械研究所 | Pipe fitting flanging forming method and pipe fitting |
| CN113523060B (en) * | 2021-07-29 | 2023-02-24 | 上海航天精密机械研究所 | Pipe fitting flanging forming method and pipe fitting |
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Application publication date: 20130102 |