CN103753162B - The roll forming device of ten hole micro-channel flat and manufacturing process - Google Patents

The roll forming device of ten hole micro-channel flat and manufacturing process Download PDF

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Publication number
CN103753162B
CN103753162B CN201410021043.8A CN201410021043A CN103753162B CN 103753162 B CN103753162 B CN 103753162B CN 201410021043 A CN201410021043 A CN 201410021043A CN 103753162 B CN103753162 B CN 103753162B
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CN
China
Prior art keywords
roll forming
channel flat
roll
brazing flux
hole micro
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CN201410021043.8A
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Chinese (zh)
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CN103753162A (en
Inventor
李大永
万殿貴志
唐鼎
邹天下
辛纪元
彭颖红
北雅光
磯本直亮
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上海交通大学
英田技术工程株式会社
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Priority to CN201410021043.8A priority Critical patent/CN103753162B/en
Publication of CN103753162A publication Critical patent/CN103753162A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08Making tubes with welded or soldered seams
    • B21C37/0803Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B23P23/06Metal-working plant comprising a number of associated machines or apparatus

Abstract

The invention discloses a kind of roll forming device of ten hole micro-channel flat, comprise the uncoiler, straightener and the roll forming unit that set gradually, roll forming unit comprises the two rows roll that arranged in order formed by multi-pass roll forming roller, be arranged at roll forming roller between painting brazing flux device and product straightener, above push aside roller and under push aside and between roller, be provided with the gap suitable with ten hole micro-channel flat shape and size. The manufacturing process of above-mentioned building mortion is disclosed simultaneously. The present invention does not need more accurate mould, has avoided the series of problems of continuously extruded middle appearance, and the quality of the flat tube of producing is more stable; While adopting fashion of extrusion to produce, extrusion speed is conventionally at 2-3 m/min, and roll bending explained hereafter speed is greater than 80 ms/min, and production efficiency improves more than 20 times compared with conventional extruded mode; Avoid adding extra welding procedure in roll forming process, only can realize the production of whole heat exchanger by soldering processes.

Description

The roll forming device of ten hole micro-channel flat and manufacturing process

Technical field

The present invention relates to manufacture method and equipment technical field for processing heat exchange micro-channel flat, particularlySay, what relate to is a kind of roll forming device and manufacturing process of ten hole micro-channel flat.

Background technology

Heat the air-condition heat exchanger that ventilation refrigeration industry uses, what use traditionally is bronzing pipe or the efficient interior spiral shell of circleLine pipe and outer fin aluminum pipe. Due to the restriction to freon refrigerant, condenser, the evaporimeter of air conditioning for automobiles at present,The pipe sheet type structure that no longer adopts copper pipe aluminium foil to manufacture, nearly all automobile all adopts aluminum parallel flow type coldCondenser and laminated evaporator, they have advantages of lightweight, heat exchange performance good. Parallel flow heat exchanger,Adopt porous micro channel flat tube, its channel size is in 0.5mm left and right, and the quantity of microchannel is more, size is less,Its anti-burst ability is stronger, exchange capability of heat better.

Production air-conditioning antipriming pipe mainly adopts the mode of aluminum product hot extrusion at present, and continuously extruded technology is to adopt pole aluminiumMaterial is blank, sends into pinch roller along the microflute of squeegee roller, brings blank into die cavity, Yin Mo by the frictional force of microflute both sidesWipe and heat up, be out of shape, produce Plastic Flow, enter mold diversion hole, extruded product. Extrusion process has followingLimitation:

1, production cost is high. In extrusion process, the condition of work of extrusion die is severe, aluminum metal stream and needle-likeThe mandrel surface friction of structure is strong, and the die working length rate of wear is fast, and die life is short. Extrusion die work bandOften polishing again.

2, production equipment energy consumption is large. Die change need to, through 14 procedures, affect operating efficiency. Extruding forceDemand is large, and equipment power consumption is high.

3, unstable product quality. The technique ginsengs such as the temperature of continuously extruded process, speed, squeegee roller running clearanceNumber is a kind of dynamically-adjusting parameter of interdependence, continuously extruded can produce press more than, oxide-film on blank top layer,The pollutant such as greasy dirt and aqueous vapor is easily directly extruded in goods, has a strong impact on product quality porous micro channel flat tubeClassical production process.

Through retrieval, find Chinese invention patent: the production line of flat metal tube and the manufacture method of flat metal tube, openNumber: 101186014, application number: 200710301550.7, this disclosure of the invention a kind of production line of flat metal tubeManufacture method with flat metal tube: " production line of described flat metal tube at least comprises that a rolling device, is at line lengthDegree compensation arrangement and a flat metal tube extruder, described online length compensation device is used for dynamically adjusting metallic rod and arrivesThe time of next step operation. Described flat metal tube manufacture method comprises utilizes rolling device by the metallic rod base after foundingRoll into and send into continuous extruder by the metallic rod support member of online length compensation device after metallic rod metallic rod is squeezedBe pressed into flat metal tube, described online length compensation device is dynamically adjusted metallic rod by metallic rod support member and is arrived nextThe time of step operation, by the continuous extruder that is supplied to of metallic rod stable and continuous. " this invention is by being used online benefitRepaying device, although can solve some problems, is continuous extruding technology because of what still adopt, so stillThere is above-mentioned problem, therefore need a kind of new processing technology badly, obtain higher Product Precision, more excellentProperties of product, the significantly feature such as energy-conservation, low cost, high yield.

Through retrieval, find Chinese invention patent: roll forming manufacture method and the equipment of porous micro channel flat tube, public affairsThe number of opening: CN102179697A, application number: 201110073278.8, this disclosure of the invention a kind of porous microchannel flatRoll forming manufacture method and the equipment of pipe: " first metal coil tape, after uncoiling aligning on-line cleaning, is delivered to rollerPress suppresses microflute; Metal blank enters into the multi-step forming roll of arranged in order afterwards, roll successivelyThe band material transporting bends to symmetrical both sides gradually from straightened condition; Finally, then by the both sides of described symmetry undertakenConnect, form described porous micro channel flat tube. Although " this invention avoided occurring in continuous extruding technology one beRow problem, but this invention has following limitation in the specific implementation: first, need to before roll bending, carry out band materialThe compacting of microflute, therefore has strict demand to band material; Have, the welding of described symmetrical both sides need to add additionally againBond technology, seriously hindered tubulation speed.

Summary of the invention

The present invention is directed to above shortcomings in prior art, provide a kind of roll bending of ten hole micro-channel flat to becomeShape device and manufacturing process. The present invention has avoided the series of problems of continuously extruded middle appearance, has also avoided existing simultaneouslyThere is the limitation occurring in the roll forming of microchannel.

The present invention is achieved by the following technical solutions.

According to an aspect of the present invention, provide a kind of roll forming device of ten hole micro-channel flat, comprised and complying withUncoiler, straightener and the roll forming unit of inferior setting, wherein, described roll forming unit comprises by multiple tracksInferior roll forming roller to arranged in order form two rows roll and be arranged at roll forming roller between paintingBrazing flux device and product straightener, above push aside roller and under push aside between roller, be provided with ten hole micro-channel flat shapes andThe gap that size is suitable;

Described uncoiler, for discharging the metal blank of package;

Described straightener, for make metal blank more smooth send into shaping stage;

Described two rows roll, for by straight metal blank gradually bend to ten hole micro-channel flat;

Described painting brazing flux device, is coated with a certain amount of brazing flux for the folding intersection at metal blank, thereby is shapedAfter carry out soldering;

Described product straightener, keeps straight for the metal blank that ensures to send to, and lateral sliding occurs while avoiding chargingAnd shake.

Preferably, described roll forming roller is to being symmetrical structure.

Preferably, described roll forming roller is to having Precise outline structure.

Preferably, the rear end of described roll forming unit is provided with high speed cutting means, described high speed cutting means basisThe ten hole micro-channel flat that length requirement cutting is produced.

Preferably, described roll forming unit comprises 24 passage roll forming rollers pair, and described painting brazing flux device comprisesFirst is coated with brazing flux device and second is coated with brazing flux device, and wherein, first is coated with brazing flux device is arranged on the 9th passage roll bending one-tenthShape roller is to locating, and second is coated with brazing flux device is arranged on the 16th passage roll forming roller to locating.

Preferably, described first is coated with brazing flux device is provided with 5 Glue dripping heads, and described second is coated with brazing flux device is provided with 4Glue dripping head.

Preferably, described multi-pass roll forming roller is to being made up of a series of preform rollers and smart forming rolls.

A kind of roll forming device of above-mentioned ten hole micro-channel flat is provided according to another aspect of the present invention,Manufacturing process, comprises the following steps:

Step 1, metal coil tape passes through uncoiler and straightener successively, forms metal blank, and sends into roll formingUnit;

Step 2, metal blank has the roll bending in symmetrical contoured cross section successively by the multi-pass of arranged in orderForming rolls is to repeatedly bending;

Step 3, first be coated with brazing flux device and second be coated with brazing flux device respectively at the 9th passage roll forming roller to the16 passage roll forming rollers, to locating, are coated with a certain amount of brazing flux to the folding intersection of metal blank, after being shapedCarry out soldering;

Step 4, the metal blank after bending passes through product straightener and high speed cutting means successively, cuts formationThere are ten hole micro-channel flat of random length.

Preferably, in described step 2, metal blank is through twice 180 degree turnovers, and each turnover makes metal blankThe closed hole of overlapped formation.

Preferably, described ten hole micro-channel flat have along center line symmetrical structure, and the both sides of center line are respectively fiveIndividual passage.

Preferably, the cross sectional shape of described five microchannels is roughly rectangle.

Preferably, described metal coil tape adopts the clad aluminum strip paper tinsel with heat conveyance performance, described clad aluminum stripPaper tinsel comprises three layers, and wherein, intermediate layer is Al-Mn alloy, and the coated thickness in two sides in intermediate layer is clad aluminum strip paper tinsel10% Al-Si solder alloy.

The roll forming device and the manufacturing process that utilize ten hole micro-channel flat provided by the invention, pass through arranged in orderMulti-pass there is the roll forming roller pair of contoured profile, by laterally curved to coiled material or individual sheet material carrying out graduallySong, makes the shape of specific end face; This manufacturing process belongs to flexible forming process, replaceable different embossingPassage roll forming roller pair, can produce circular cross-section, square-section and variable cross-section passage.

The roll forming device of ten hole micro-channel flat provided by the invention and manufacturing process, its production efficiency is high, producesProduct surface quality is good, and dimensional accuracy is high, and length is unrestricted; Can high speed tubulation, speed of production be greater than 80 meters/Minute; Can full automation, by row's roller roll forming, working environment is clean, pollution-free, low noise, jointCan; Ten microchannels, hole that utilize the present invention to produce to obtain are flat, constant product quality, and in roll bending process, aluminum strip placeIn good stress state, can ensure that microchannel has higher dimensional accuracy, and it is longer respectively to arrange life-span of roller; AdoptWith high-quality heat transmission clad aluminum strip paper tinsel, taking Al-Mn alloy as core, two-sided coated thickness is clad aluminum stripThe Al-Si solder alloy of paper tinsel 10%, not only has good surface quality, accurate size and smooth plate shape,And even tissue, forming property are good, especially the uniformity of clad and weldability are very excellent.

The metal coil tape that the present invention adopts is and the similar aluminium alloy roll coil of strip of fin to be easy to anticorrosion control, and flatThe welding procedure of pipe is all soldering processes with the welding of fin flat tube, only need in the time of tubulation, coat a certain amount of brazing flux,After tubulation, in soldering oven, carry out together soldering with the fin assembling, do not need extra special WelderSkill; The flat tube steady quality of producing, has significantly energy-conservation, low cost, high yield, tubulation speed highFeature.

Compared with prior art, advantage of the present invention and beneficial effect are:

First, in the production of micro-channel flat, do not need more accurate mould, avoided one of continuously extruded middle appearanceSeries of problems, the quality of the flat tube of producing is more stable;

Secondly, while adopting fashion of extrusion to produce, extrusion speed is conventionally at 2-3 m/min, and roll bending explained hereafterSpeed is greater than 80 ms/min, and production efficiency improves more than 20 times compared with conventional extruded mode;

Meanwhile, avoid adding extra welding procedure in roll forming process, only can realize by soldering processesThe production of whole heat exchanger.

Brief description of the drawings

By reading the detailed description of non-limiting example being done with reference to the following drawings, other spy of the present inventionLevy, object and advantage will become more obvious:

Fig. 1 is the roll forming device structural representation of the present invention's ten hole micro-channel flat;

Fig. 2 is the ten hole micro-channel flat sectional views that utilize the present invention to prepare;

Fig. 3 is the rough schematic view of ten hole micro-channel flat roll forming processes;

Fig. 4 is that in the roll forming process of ten hole micro-channel flat, flower type changes schematic diagram;

In figure: 1 is uncoiler, 2 is straightener, and 3 is roll forming unit, and 4 is the first painting brazing flux device, 5For product straightener, 6 is the second painting brazing flux device, and 7 is high speed cutting means, and 8 is ten hole micro-channel flat.

Detailed description of the invention

Below embodiments of the invention are elaborated: the present embodiment carries out reality under taking technical solution of the present invention as prerequisiteExecute, provided detailed embodiment and concrete operating process. It should be pointed out that the ordinary skill people to this areaMember, without departing from the inventive concept of the premise, can also make some distortion and improvement, and these all belong to thisBright protection domain.

Please refer to Fig. 1 to Fig. 4.

The present embodiment provides a kind of roll forming device of ten hole micro-channel flat, comprises the uncoiling setting graduallyMachine, straightener and roll forming unit, wherein, described roll forming unit comprises by multi-pass roll forming rollerTo arranged in order form two rows roll and be arranged at roll forming roller between painting brazing flux device and productProduct straightener, above push aside roller and under push aside between roller, be provided with ten hole micro-channel flat shape and size suitableGap;

Described uncoiler, for discharging the metal blank of package;

Described straightener, for make metal blank more smooth send into shaping stage;

Described two rows roll, for by straight metal blank gradually bend to ten hole micro-channel flat;

Described painting brazing flux device, is coated with a certain amount of brazing flux for the folding intersection at metal blank, thereby is shapedAfter carry out soldering.

Further, described roll forming roller is to being symmetrical structure.

Further, described roll forming roller is to having Precise outline structure.

Further, the rear end of described roll forming unit is provided with high speed cutting means, described high speed cutting means rootThe ten hole micro-channel flat of producing according to length requirement cutting.

Further, described roll forming unit comprises 24 passage roll forming rollers pair, described painting brazing flux device bagDraw together the first painting brazing flux device and second and be coated with brazing flux device, wherein, first is coated with brazing flux device is arranged on the 9th passage roll bendingForming rolls is to locating, and second is coated with brazing flux device is arranged on the 16th passage roll forming roller to locating.

Further, described first is coated with brazing flux device is provided with 5 Glue dripping heads, and described second is coated with brazing flux device is provided with 4Individual Glue dripping head.

Further, described multi-pass roll forming roller is to being made up of a series of preform rollers and smart forming rolls.

The manufacturing process of the roll forming device of above-mentioned ten hole micro-channel flat, comprises the following steps:

Step 1, metal coil tape passes through uncoiler and straightener successively, forms metal blank, and sends into roll formingUnit;

Step 2, metal blank has the roll bending in symmetrical contoured cross section successively by the multi-pass of arranged in orderForming rolls is to repeatedly bending;

Step 3, first be coated with brazing flux device and second be coated with brazing flux device respectively at the 9th passage roll forming roller to the16 passage roll forming rollers, to locating, are coated with a certain amount of brazing flux to the folding intersection of metal blank, after being shapedCarry out soldering;

Step 4, the metal blank after bending passes through product straightener and high speed cutting means successively, cuts formationThere are ten hole micro-channel flat of random length.

Further, described ten hole micro-channel flat have along center line symmetrical structure, and the both sides of center line are respectivelyFive passages.

Further, the cross sectional shape of described five microchannels is roughly rectangle.

Further, described metal coil tape adopts the clad aluminum strip paper tinsel with heat conveyance performance, described clad aluminiumBand paper tinsel comprises three layers, and wherein, intermediate layer is Al-Mn alloy, and the coated thickness in two sides in intermediate layer is clad aluminum stripThe Al-Si solder alloy of paper tinsel 10%.

The present embodiment is specially:

As shown in Figure 1, the manufacturing process of the roll forming device of the ten hole micro-channel flat that the present embodiment provides, bagDraw together following steps:

First, grandfather tape material is that bandwidth is 53mm, the metal coil tape that wall thickness is 0.265mm, and its material is by three layersThe composite of the aluminium alloy composition of heterogeneity; Metal belting after uncoiler 1 uncoiling, straightener 2 alignings,Deliver to roll forming unit 3;

Afterwards, the multi-pass roll forming roller centering of metal blank entering order configuration is shaped gradually, its forming processAs shown in Figure 3; During this period, plate need to be through twice 180 degree turnovers, and each turnover all can make plate mutualOverlap to form closed hole, therefore, before twice turnover, need to coat a certain amount of in the relevant position on metal beltingBrazing flux for soldering, here, be coated with brazing flux device 4 and be arranged on roll forming operation He #16 road, #9 road rollerBefore o ing operation; Just be configured as ten hole micro-channel flat from roll forming unit after out;

Finally, then through product straightener 5, deliver in high speed cutting means 6 and cut online, accorded withClose ten hole micro-channel flat products of requirement.

As shown in Figure 2, application said method manufacturing product is out a kind of folding flat with ten microchannelsPipe, namely ten described hole micro-channel flat, described ten hole micro-channel flat have upper wall portions, lower wall portion, a left sideWall portion and right wall portion, described left wall portion and described right wall portion have arcuate shape, and described arcuate shape is roughly semicircleOr half-oval shaped.

As shown in Figure 4, the roll bending technical process of ten hole micro-channel flat is made up of following 24 passages:

Grandfather tape material 20 bending for the first time after #1 road roll bending operation forms the sidewall 21 of passage;

After #2 road roll forming operation, plate both sides form the U-shaped groove 23 that Open Side Down, and recessedThe plate 22 into next step roll bending is left in groove outside;

After #3 road roll forming operation, form opening up U-shaped groove 24;

After #4 road roll forming operation, form downward opening U-shaped groove 25;

After #5 road roll forming operation, form crimp 26;

After #6 road roll forming operation, plate starts inside turnover, the outer wall 28 of formation passage and excessiveCircular arc 27, the angle of this road roll bending turnover is 45 °;

After #7 road roll forming operation, plate continues inwardly turnover, and the angle after turnover is 60 °;

After #8 road roll forming operation, turnover forms transition arc 30 and channel outer wall 31, simultaneously in plateBetween reflexed become upwards arc 32, the arc degree of depth is Hs, object is that after making plate turnover, resilience reduces, and obtains moreGood turnover angle. The angle of this procedure turnover is 85 °;

After #9 road roll forming operation, plate continues turnover, and in the middle of plate, arc 32 of reflexed highly strengthenHd. The angle turning down after this procedure is 90 °;

After #10 road roll forming operation, the turnover of plate turnover part, to inner side, recovers flat in the middle of plateState;

After #11 road roll forming operation, inwardly turnover is continued in plate both sides, and turnover angle is 125 °;

After #12 road roll forming operation, inwardly turnover is continued in plate both sides, and turnover angle is 160 °;

After #13 road roll forming operation, form the arc 34 of downward recurvation at plate middle part, in order that twoRollover folding part is divided with the middle laminating of plate better, reduces to turn down part resilience;

After #14 road roll forming operation, dogleg section and the laminating of plate mid portion, groove 33 and grooveThe 34 closed passages 35 that form. Passage 35 runs through the longitudinal of whole plate. U-shaped groove 23 and 25 is towards upper, withThe public sidewall of passage 35. Crimp 26 is towards the opposite with straight line;

After #15 road roll forming operation, formed the 3rd turnover circular arc 36, groove 23,25 andPassage 35 rotation turnovers, final groove 23,25 will form remaining passage 35 in the laminating of plate mid portion;

After #16 road roll forming operation, groove 23,25 and passage 35 turn down and become gradually large, sidewallCircular arc 36 length increase. The angle turning down after this procedure is 42 degree;

After #17 road roll forming operation, groove 23,25 and passage 35 turn down and become gradually large, sidewallCircular arc 36 length increase. The angle that this procedure turns over rear folding is 62 degree;

After #18 road roll forming operation, groove 23,25 and passage 35 infoldings become greatly gradually, sidewallCircular arc 36 length increase. Angle after this procedure turnover is 85 degree;

After #19 road roll forming operation, groove 23,25 and passage 35 infoldings become greatly gradually, sidewallCircular arc 36 length increase. Angle after this procedure turnover is 95 degree;

After #20 road roll forming operation, groove 23,25 and passage 35 infoldings become greatly gradually, sidewallCircular arc 36 length increase. Angle after this procedure turnover is 116 degree;

After #21 road roll forming operation, groove 23,25 and passage 35 infoldings become greatly gradually, sidewallCircular arc 36 length increase. Angle after this procedure turnover is 138 degree;

After #22 road roll forming operation, groove 23,25 and passage 35 infoldings become greatly gradually, sidewallCircular arc 36 length increase. Angle after this procedure turnover is 160 degree;

After #23 road roll forming operation, groove 23,25 and passage 35 turnovers and plate mid portionLaminating, groove 23 and the closed passage 35 that forms of groove 25, outer wall 29 is perfect closed at plate mid portion. OutwardWall 37 parallels with outer wall 38, with the common tube channel outer wall that forms of circular arc 36. Crimp 26 is fitted with circular arc 36.Passage 35 has ten;

Through #17 road roll forming operation, this procedure object is precision truing, makes final ten holes that form micro-Tube channel shape is more perfect.

In the present embodiment:

The roll forming technique of ten hole micro-channel flat, comprises the steps:

First, metal coil tape is delivered to roll forming unit after uncoiling, aligning;

Afterwards, the shaping that metal belting has a symmetrical contoured cross section by the multi-pass of arranged in order is successively rolledRoller repeatedly bends, and forms described ten hole micro-channel flat;

The last micro-channel flat through aligning, cut formation again with random length.

The ten hole micro-channel flat that obtain are along center line symmetry, and every side has five passages.

Described roll forming technique is the forming rolls by the multi-pass of arranged in order with contoured profile,Coiled material or individual sheet material gradually carry out transverse curvature, to make the shape of specific end face.

Described roll forming explained hereafter efficiency is high, and product surface quality is good, and dimensional accuracy is high, and length is not limitedSystem.

Described roll forming technique can high speed tubulation, and speed of production is greater than 80 ms/min.

Described roll forming technique can full automation, and main by row's roller roll forming, working environment is clean,Pollution-free, low noise, energy-conservation.

Described roll forming technique belongs to flexible forming process, replaceable different embossing passage roll, Ji KeshengOutput circular cross-section, square-section and variable cross-section passage.

Described roll forming handicraft product steady quality, in roll bending process, aluminum strip is in good stress state,Can ensure that microchannel has higher dimensional accuracy, and it is longer respectively to arrange life-span of roller.

The high-quality heat transmission clad aluminum strip paper tinsel of described roll forming process using, taking Al-Mn alloy as core,The Al-Si solder alloy that two-sided coated thickness is 10%, it not only has good surface quality, accurate sizeWith smooth plate shape, and even tissue, forming property are good, and especially the uniformity of clad and weldability are veryExcellent.

The present embodiment provides the roll forming device of ten hole micro-channel flat, comprising:

Uncoiler, for discharging the metal blank of package;

Straightener, for make metal blank more smooth send into shaping stage;

Roll forming unit, straight metal blank gradually bend to micro-channel flat;

Be coated with brazing flux device, be coated with a certain amount of brazing flux for the folding intersection at metal blank, so that after being shapedCarry out soldering.

High speed cutting means, for ten hole micro-channel tubes of progressive forming being carried out to restriction and the cutting of length direction, described inHigh speed cutting machine can match with forming speed, the ten hole micro-channel flat that length cutting is produced as requested.

Product straightener, makes the metal blank of sending to keep straight, and lateral sliding and shake occur while avoiding charging.

Described roll forming unit is made up of a series of preform roller and smart forming rolls, wherein top and bottom rolls shape andGap is determined by the size of produced flat tube.

Described painting brazing flux device is installed on roll forming unit #9 road roll bending equipment He 16 road roll bending equipment.

Described painting brazing flux device has two different covers, 5 Glue dripping heads of a set of employing, in addition 4 points of a set of employingGlue head.

After described roll forming unit, be provided with cutting machine, described cutting machine obtains the micro-of length cutting production on requestPassage flat tube.

Described roll forming unit is provided with a series of rollers pair with Precise outline cross section, and the right contoured surface of described roller is equalFor symmetric shape, described metal belting along described roller to advancing, bending is shaped gradually.

First described roll forming process is bent into roughly rectangular zigzag fashion by the both sides of described metal blank, afterwardsMaking described Sheet metal forming through twice 180 degree turnovers is again described ten hole micro-channel flat.

Described micro-channel flat connects by the method for soldering at the overlapping of tube wall.

Described soldering processes require, in forming process, to be coated with a certain amount of brazing flux in the relevant position of metal belting.

Above specific embodiments of the invention are described. It will be appreciated that, the present invention is not limited toState specific implementations, those skilled in the art can make various distortion or amendment within the scope of the claims,This does not affect flesh and blood of the present invention.

Claims (9)

1. a roll forming device for ten hole micro-channel flat, is characterized in that, comprises the uncoiling setting graduallyMachine, straightener and roll forming unit, wherein, described roll forming unit comprises by multi-pass roll forming rollerTo arranged in order form two rows roll and be arranged at roll forming roller between painting brazing flux device and productProduct straightener, above push aside roller and under push aside between roller, be provided with ten hole micro-channel flat shape and size suitableGap;
Described uncoiler, for discharging the metal blank of package;
Described straightener, for make metal blank more smooth send into shaping stage;
Described two rows roll, for by straight metal blank gradually bend to ten hole micro-channel flat;
Described painting brazing flux device, is coated with a certain amount of brazing flux for the folding intersection at metal blank, thereby is shapedAfter carry out soldering;
Described product straightener, keeps straight for the metal blank that ensures to send to, and lateral sliding occurs while avoiding chargingAnd shake;
Described roll forming unit comprises 24 passage roll forming rollers pair, and described painting brazing flux device comprises the first painting prickerAgent device and second is coated with brazing flux device, and wherein, first is coated with brazing flux device is arranged on the 9th passage roll forming roller to locating,Second is coated with brazing flux device is arranged on the 16th passage roll forming roller to locating.
2. the roll forming device of ten hole micro-channel flat according to claim 1, is characterized in that, instituteState roll forming roller to being symmetrical structure.
3. the roll forming device of ten hole micro-channel flat according to claim 1, is characterized in that, instituteState roll forming roller to thering is Precise outline structure.
4. the roll forming device of ten hole micro-channel flat according to claim 1, is characterized in that, instituteState multi-pass roll forming roller to being formed by a series of preform rollers and smart forming rolls.
5. the roll forming device of ten hole micro-channel flat according to claim 1, is characterized in that, instituteThe rear end of stating roll forming unit is provided with high speed cutting means, and described high speed cutting means is raw according to length requirement cuttingThe ten hole micro-channel flat of producing.
6. the roll forming device of ten hole micro-channel flat according to claim 1, is characterized in that, instituteState the first painting brazing flux device and be provided with 5 Glue dripping heads, described second is coated with brazing flux device is provided with 4 Glue dripping heads.
7. the one-tenth of the roll forming device of ten hole micro-channel flat described in any one in a claim 1 to 6Shape method, is characterized in that, comprises the following steps:
Step 1, metal coil tape passes through uncoiler and straightener successively, forms metal blank, and sends into roll formingUnit;
Step 2, metal blank has the roll bending in symmetrical contoured cross section successively by the multi-pass of arranged in orderForming rolls is to repeatedly bending;
Step 3, first be coated with brazing flux device and second be coated with brazing flux device respectively at the 9th passage roll forming roller to the16 passage roll forming rollers, to locating, are coated with a certain amount of brazing flux to the folding intersection of metal blank, after being shapedCarry out soldering;
Step 4, the metal blank after bending passes through product straightener and high speed cutting means successively, cuts formationThere are ten hole micro-channel flat of random length.
8. the manufacturing process of the roll forming device of ten hole micro-channel flat according to claim 7, its spyLevy and be, in described step 2, metal blank is through twice 180 degree turnovers, and each turnover makes metal blank mutualOverlap to form closed hole.
9. the manufacturing process of the roll forming device of ten hole micro-channel flat according to claim 7, its spyLevy and be, described metal coil tape adopts the clad aluminum strip paper tinsel with heat conveyance performance, described clad aluminum strip paper tinsel bagDraw together three layers, wherein, intermediate layer is Al-Mn alloy, and the two sides in intermediate layer respectively coated thickness is clad aluminum strip paper tinsel10% Al-Si solder alloy.
CN201410021043.8A 2014-01-17 2014-01-17 The roll forming device of ten hole micro-channel flat and manufacturing process CN103753162B (en)

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