CN103331349B - Preparation device and method of oval spiral flat pipe - Google Patents
Preparation device and method of oval spiral flat pipe Download PDFInfo
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- CN103331349B CN103331349B CN201310260283.9A CN201310260283A CN103331349B CN 103331349 B CN103331349 B CN 103331349B CN 201310260283 A CN201310260283 A CN 201310260283A CN 103331349 B CN103331349 B CN 103331349B
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Abstract
The invention discloses a preparation device and method of an oval spiral flat pipe. The preparation device of the oval spiral flat pipe comprises a rack and an electric control system, wherein the rack is sequentially provided with a pipe pushing device, a pipe pushing guide cylinder, an adjustable rolling roller system and a cold drawing device, wherein a control signal output end of the electric control system is connected with control signal input ends of the pipe pushing device and the cold drawing device; the adjustable rolling roller system is formed by a combined clamp and more than three paths of roller positioning discs which are arranged in the combined clamp in a mutually-paralleling manner; each roller positioning disc is provided with a molded roller pair formed by a pair of molding rollers with parallel axes; each molded roller is provided with a groove; the two molded rollers are combined and then the grooves are matched to form an oval pipeline through hole; and axis centers of the oval pipeline through holes in all the roller positioning discs in the combined clamp are overlapped. The device disclosed by the invention is simple in structure and convenient to operate; and a spiral flat pipe product prepared by the preparation method disclosed by the invention is uniform in quality and low in cost, and the energy consumption is reduced.
Description
Technical field
The invention belongs to metal spiral flat pipe preparing technical field, specifically refer to a kind of ellipse spiral flat tube preparation facilities and method.
Background technology
Metal spiral flat pipe is a kind of novel tube that twentieth century end occurs, it is mainly used in the heat-exchange system making heat exchanger, condenser, air cooler, waste heat boiler, closed cooling tower etc.Compared with traditional straight pipe, elliptical tube, spiral flat tube has the advantages such as heat transfer efficiency is high, less scaling, easy cleaning.Wherein ellipse spiral flat tube is due to its distinctive geometry, more effectively mutually can remove between ellipse spiral flat tube to be formed and support, stability is stronger, and fluid media (medium) when pipe internal flow can along with the body hand of spiral rotational flow, form violent streamline change, enhance fluid at bore to mixed flow, facilitate the heat exchange of fluid media (medium) self, thus there is heat transmission function inside and outside good pipe, improve the heat exchange efficiency of cooling tower by a relatively large margin, is a kind of energy-saving tubing be worth promoting.
At present, the spiral flat tube announced both at home and abroad is correlated with material molding technology, mainly contains following three kinds of modes:
1) flatten-Re and be twisted into type.Namely at high operating temperatures, first metal circular tube is flattened shaping with machinery, then adopt torque tool metal tube to be reversed the spiral flat tube of formation one constant pitch, the tube surfaces that this mode is processed is of poor quality, energy consumption is high, and flat tube Torsion coil shape is wayward, and end product quality is difficult to ensure.
2) cold moudling.First design the spiral flat tube mould with certain degreeof tortuosity, then at ambient temperature, be pressed in spiral flat tube mould by metal tube by external force, namely spiral flat tube is cold-pressed into type.But it is high to mould requirement that this mode processes tubing, die apparatus cost is high, and maintenance cost is high, and production cost is high, can not be applicable to the needs of the spiral flat tube manufacturing multiple different size.
3) rolling and forming.Namely by roll, metal circular tube is rolled cold rolling and become spiral flat tube.Application number be 201210109332.4 Chinese patent disclose a kind of heat transmission equipment spiral flat tube roll forming machine, it comprises housing, base, mill roll mechanism, rotating disc, friction feeding mechanism formed.Its mill roll mechanism is by pair of parallel axle molding roller and form with the bearing of guide rail, each molding roller is processed with groove, the cross sectional shape of groove is just the half of the cross sectional shape of required spiral flat tube, after two molding rollers close up, institute's encirclement part is required complete tube section shape.This mill roll mechanism is fixing on the rotating pan, can rotate together along with rotating disc.The operation principle of this roll forming machine first molding roller is put into centre in pipe one end, the locking nut that rotary roller is right, roll relative motion, circular hollow section is rolled into required spiral flat tube cross section, then the device of steel pipe feed mechanism is started, promote clamping feeding roll to be clamped by pipe, now steel pipe is just in time in level.Starting drive power supply, rotating disc starts to rotate, and meanwhile, feeding roll promotes steel pipe and advances.Molding roller is also rotating with rotating disc while own axis, and steel pipe, after molding roller, is produced helically twisted distortion, becomes spiral flat tube while draw down.Its pitch regulates by controlling steel pipe feed speed.Facts have proved, this mode processes tubing certain limitation, and the pipeline as poor to tubing elasticity will skid in hitch feed process, causes milling train not charging; And this roll forming machine only has a pair roller, during the processing less spiral flat tube of pitch, the cross section of spiral flat tube very easily torsional deformation is formed irregularly shaped, even cause tube wall indent etc., and the screw pitch producing spiral flat tube is difficult to control, the regularity making roll rolling screw pitch shaping is poor, has a strong impact on the quality of product.
Summary of the invention
Object of the present invention will provide a kind of ellipse spiral flat tube preparation facilities and method exactly, and this apparatus structure is simple, easy to operate, and the spiral flat tube product quality utilizing preparation method of the present invention to prepare is even, with low cost, reduce energy consumption.
For achieving the above object, ellipse spiral flat tube preparation facilities of the present invention, comprising: frame and electric-control system, described frame is disposed with ejector sleeve device, ejector sleeve guide cylinder, adjustable roller roller system and cold-drawing device; The control signal output of described electric-control system is connected with the control signal input of cold-drawing device with ejector sleeve device, and its special character is: described adjustable roller roller system is made up of built-up jig and the roll positioning disk in described built-up jig more than three roads arranged in parallel; Each roll positioning disk is provided with the molding roller pair be made up of the molding roller of a pair axis being parallel, described molding roller offers groove, two molding rollers close up rearward recess and match and form oval ducts through hole; The axle center of the oval ducts through hole on the whole roll positioning disks in described built-up jig coincides.
Preferably, described built-up jig is made up of clamp mount and the brace summer be arranged on described clamp mount, and described roll positioning disk is arranged on described support bar beam, and described roll positioning disk is provided with adjusting device.Like this, relatively rotated on the brace summer of built-up jig by the adjustable roll positioning disk of operation adjusting device, make energy shape between the major axis of two adjacent oval ducts through holes at a certain angle.
Further, the roll shaft place plane parallel that in described adjacent twice roll positioning disk, molding roller is right, and parallel with the both ends of the surface of roll positioning disk.
Also further, the two ends of described molding roller are connected in described roll positioning disk by bearing.
Again further, the output shaft of described ejector sleeve device and the axle center of described ejector sleeve guide cylinder and described oval ducts through hole coincide.
Again further, 3 ~ 6 road roll positioning disks are provided with in described built-up jig.
Further, in built-up jig, along described ejector sleeve device to described cold-drawing device direction, when keeping oval perimeters constant, the ovality of its front one oval ducts through hole of ellipticity ratio of the oval ducts through hole on rear one roll positioning disk is large.Like this, this device is adopted to prepare in ellipse spiral flat tube process, in the direction of advancing along ellipse spiral flat tube, the ovality of the oval ducts through hole that it passes progressively increases, the effect of a kind of spinning step by step rolling is produced to pipeline to be rolled, thus pipeline is in helix-deformed process, flattens distortion gradually shaping along axis, and surface and the inner molding effect of pipeline are better.
Of the present inventionly utilize described ellipse spiral flat tube preparation facilities to prepare the method for ellipse spiral flat tube, its special character is, it comprises the following steps successively:
1) according to the angle of spiral and the regulation by pitch roll positioning disk of required ellipse spiral flat tube, make shape between the major axis of adjacent two oval ducts through holes at a certain angle;
2) circular straighttube is put into ejector sleeve guide cylinder, then start electric control system controls ejector sleeve plant running and promote circular straighttube through all oval ducts through holes in adjustable roller roller system, form the ellipse spiral flat tube of certain length;
3) control ejector sleeve device out of service, cold-drawing device is connected to and passes on that section of ellipse spiral flat tube of adjustable roller roller system;
4) again regulate ejector sleeve device and cold-drawing device synchronous operation described in electric control system controls, make circular straighttube pass all oval ducts through holes in adjustable roller roller system, ellipse spiral flat tube can be formed.
Preferably, in described step 1), when regulating roll positioning disk, being the first roll positioning disk wherein near ejector sleeve device, with the first roll positioning disk for benchmark, by the second roll positioning disk adjacent with the first roll positioning disk clockwise or rotate counterclockwise certain angle, make shape between the major axis of two oval ducts through holes in the first roll positioning disk and the second roll positioning disk at a certain angle; Successively remaining roller positioning disk is carried out rotation by the clockwise or counter clockwise direction corresponding to the second roll positioning disk and angle of rotation respectively again to regulate.
Further preferably, in step 1), the angle formed between the major axis of adjacent two oval ducts through holes is 15 ~ 45 °.
Again further, before described step 1), be also provided with following operation:
First, regulate roll positioning disk, make the major axis of the oval ducts through hole in every one roll positioning disk all be positioned at same plane; Then, circular straighttube is put into ejector sleeve guide cylinder, start electric control system controls ejector sleeve plant running and promote circular straighttube through all oval ducts through holes in adjustable roller roller system, after forming first section of elliptical tube of certain length, control ejector sleeve device out of service.Like this, one section of elliptical tube can be left in one end of ellipse spiral flat tube, be conducive to the installation of ellipse spiral flat tube.Certainly, during concrete operations, can also when rolling ellipse spiral flat tube connects subterminal certain length, roll positioning disk is again regulated to make the major axis of the oval ducts through hole in every one roll positioning disk all be positioned at same plane, the end obtained after rolling is elliptical tube, operation like this, can respectively leave one section of elliptical tube at the two ends of ellipse spiral flat tube, be conducive to the installation of ellipse spiral flat tube.
Present invention employs the ellipse spiral flat tube preparation facilities being specifically provided with adjustable roller roller system, be provided with in adjustable roller roller system many groups have parallel axes molding roller right and mutually can rotate the roll positioning disk of adjustment.By arranging many group roll positioning disks, produce multistage spinning rolling to pipeline to be rolled, make pipeline in helix-deformed process, flatten distortion shaping, spiral pipeline shaping rule is high, the surface of pipeline and inner good forming effect.But if roll positioning disk quantity is too many, it is larger that frictional force increases required push-and-pull dynamics, expends the energy more, the better effects if when being provided with 3 ~ 6 road roll positioning disk in described built-up jig.The present invention is also provided with adjacent rollers positioning disk can rotate adjustment, and make energy shape between the major axis of wherein adjacent oval ducts through hole at a certain angle, the metal tube like this through adjustable roller roller system can be rolled into as elliptical spiral formula flat tube.Between the major axis of described two adjacent oval ducts through holes, angle angle is larger, the screw pitch of the ellipse spiral flat tube of roll forming is shorter, degreeof tortuosity is larger, required ejector sleeve dynamics and tube drawing dynamics and required energy consumption also larger, between the major axis of adjacent ellipses shape pipeline through hole of the present invention, angle is preferably 15 ~ 45 °.Device of the present invention may be used for the roll forming of carbon steel tubing, stainless steel tube, copper pipe, aluminium-alloy pipe.Device structure of the present invention is simple, and equipment investment is few, easily maintenance and adjustment.
Preparation method of the present invention, only shape between the major axis of two adjacent oval ducts through holes need be made at a certain angle according to the anglec of rotation of roll positioning disk in the angle of spiral of designed ellipse spiral flat tube and pitch requirements adjustment adjustable roller roller system, then push-and-pull circular straighttube is through all oval ducts through holes in adjustable roller roller system, can obtain the high-quality ellipse spiral flat tube that flat appearance, interior walls be smooth, quality are coherent.Preparation method of the present invention has rolling and cold-drawing technology concurrently, and distortional stress status condition is good, and simple to operate, and energy consumption is low, and efficiency is high.Utilize preparation method of the present invention, can time processing become to design the ellipse spiral flat tube finished product needed.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of ellipse spiral flat tube preparation facilities of the present invention.
Fig. 2 is the partial enlarged drawing in A portion in Fig. 1.
Fig. 3 be in Fig. 1 B-B to cross-sectional view.
Fig. 4 is the structural representation of a kind of ellipse spiral flat tube utilizing the ellipse spiral flat tube preparation facilities of Fig. 1 to prepare.
Fig. 5 is the structural representation of the another kind of ellipse spiral flat tube utilizing the ellipse spiral flat tube preparation facilities of Fig. 1 to prepare.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, ellipse spiral flat tube preparation facilities of the present invention and method are described in further detail.
Embodiment 1
The preparation facilities of a kind of ellipse spiral flat tube shown in accompanying drawing 1, comprising: frame 1 and electric-control system 2, frame 1 is disposed with ejector sleeve device 3, ejector sleeve guide cylinder 4, adjustable roller roller system 5 and cold-drawing device 6; The control signal output of electric-control system 2 is connected with the control signal input of cold-drawing device 6 with ejector sleeve device 3, adjustable roller roller system 5 by built-up jig 7 and arranged in parallel in built-up jig 7 four road roll positioning disks 81,82,83,84 form; As shown in accompanying drawing 2 and accompanying drawing 3, the molding roller that the molding roller 10 each roll positioning disk 8 being provided with a pair axis being parallel forms is to 9, molding roller 10 offers groove, and after two molding rollers 10 close up, two fit depressions form oval ducts through hole 11; The axle center of all oval ducts through holes 11 in the output shaft of ejector sleeve device 3 and ejector sleeve guide cylinder 4 and adjustable roller roller system 5 coincides; Built-up jig 7 is made up of clamp mount 12 and the brace summer 13 be arranged on clamp mount 12, roll positioning disk 8 is arranged on support bar beam 13, roll positioning disk 8 is provided with adjusting device 14, can be regulated between adjacent twice roll positioning disk 8 by adjusting device 14 and relatively rotate, make energy shape between the major axis of two adjacent oval ducts through holes 11 at a certain angle; In adjacent twice roll positioning disk 8, molding roller is to the roll shaft place plane parallel of 9, and parallels with the both ends of the surface of roll positioning disk 8; The two ends of molding roller 10 are connected in described roll positioning disk 8 by bearing.
Embodiment 2
A kind of preparation facilities of ellipse spiral flat tube, its other structure is all identical with the preparation facilities of the ellipse spiral flat tube of embodiment 1, difference is, in built-up jig 7, the girth of the oval ducts through hole 11 on each road roll positioning disk 8 is identical, and they ovality close be: using wherein near ejector sleeve device 3 as the first roll positioning disk 81, remaining three roads are followed successively by the second roll positioning disk 82, 3rd roll positioning disk 83, 4th roll positioning disk 84, the ovality of the oval ducts through hole 11 on the ovality < roll positioning disk 84 of the oval ducts through hole 11 on the ovality < roll positioning disk 83 of the oval ducts through hole 11 on the ovality < roll positioning disk 82 of the oval ducts through hole 11 on roller positioning disk 81, and, the ovality of the oval ducts through hole 11 on roll positioning disk 84 is identical with the ovality of the oval cross section utilizing the present embodiment device preparation-obtained ellipse spiral flat tube.
Embodiment 3
Utilize the preparation facilities of the ellipse spiral flat tube of embodiment 1 or embodiment 2 to prepare ellipse spiral flat tube, selected circular arm is the circular stainless steel straight tube of diameter 25mm, and preparation method comprises the following steps successively:
1) regulated in ellipse spiral flat tube preparation facilities by adjusting device 14 four road roll positioning disks 81 are set, 82, 83, 84, using wherein near ejector sleeve device 3 as the first roll positioning disk 81, remaining three roads are followed successively by the second roll positioning disk 82, 3rd roll positioning disk 83, 4th roll positioning disk 84, during adjustment, with the first roll positioning disk 81 for benchmark, second roll positioning disk 82 is rotated clockwise 36 °, 3rd roll positioning disk 83 rotates clockwise 36 ° relative to the second roll positioning disk 82, 4th roll positioning disk 84 rotates clockwise 36 ° relative to the 3rd roll positioning disk 83,
2) circular straighttube 15 is put into ejector sleeve guide cylinder 4, start electric-control system 2 and control ejector sleeve device 3 operation promotion circular straighttube 15 through all oval ducts through holes 11 in adjustable roller roller system 5, form one section of ellipse spiral flat tube;
3) control the operation stopping ejector sleeve device 3, cold-drawing device 6 is connected on the flat tube passing adjustable roller roller system 5;
4) again regulate electric-control system 2 to control described ejector sleeve device 3 and cold-drawing device 6 synchronous operation, circular straighttube, through all oval ducts through holes 11 in adjustable roller roller system 5, can form ellipse spiral flat tube.
The structure of the ellipse spiral flat tube utilizing the present embodiment method to prepare as shown in Figure 4.
Embodiment 4
The preparation facilities of the ellipse spiral flat tube of embodiment 1 or 2 is utilized to prepare the another kind of method of ellipse spiral flat tube, comprise the step described in embodiment 3 successively, difference is, selected circular arm is the circular carbon steel straight tube of diameter 20mm, before step 1), be also provided with following operation:
First, promote adjusting device 14 and regulate roll positioning disk 81,82,83,84, make the major axis of the oval ducts through hole 11 in every one roll positioning disk 8 all be positioned at same plane;
Then, circular straighttube 15 is put into ejector sleeve guide cylinder 4, start electric-control system 2 and control ejector sleeve device 3 operation promotion circular straighttube through all oval ducts through holes 11 in adjustable roller roller system 5, after forming first section of elliptical tube of certain length, control ejector sleeve device 3 out of service.
The structure of the ellipse spiral flat tube utilizing the present embodiment method to prepare as shown in Figure 5.Its one end rolling has elliptical tube, utilizes the elliptical tube of this end to be convenient to ellipse spiral flat tube to be arranged among other equipment.Certainly, during concrete operations, can also when rolling ellipse spiral flat tube connects subterminal certain length, roll positioning disk is again regulated to make the major axis of the oval ducts through hole in every one roll positioning disk all be positioned at same plane, the end obtained after rolling is elliptical tube, operation like this, can respectively leave one section of elliptical tube at the two ends of ellipse spiral flat tube, be conducive to the installation of ellipse spiral flat tube.
Claims (9)
1. an ellipse spiral flat tube preparation facilities, comprise: frame (1) and electric-control system (2), described frame (1) is disposed with ejector sleeve device (3), ejector sleeve guide cylinder (4), adjustable roller roller system (5) and cold-drawing device (6), the control signal output of described electric-control system (2) is connected with the control signal input of ejector sleeve device (3) with cold-drawing device (6), it is characterized in that: described adjustable roller roller system (5) is made up of built-up jig (7) and the roll positioning disk (8) be set in parallel in described built-up jig (7) more than three roads, described roll positioning disk (8) is provided with the molding roller that is made up of the molding roller of a pair axis being parallel (10) to (9), (10) offer groove to described molding roller, two molding rollers (10) close up after fit depressions formed oval ducts through hole (11), the axle center of the oval ducts through hole (11) on the whole roll positioning disks (8) in described built-up jig (7) overlaps, in built-up jig (7), along described ejector sleeve device (3) to described cold-drawing device (6) direction, when keeping oval perimeters constant, the ovality of its front one oval ducts through hole (11) of ellipticity ratio of the oval ducts through hole (11) on rear one roll positioning disk (8) is large.
2. ellipse spiral flat tube preparation facilities according to claim 1, it is characterized in that: described built-up jig (7) is made up of clamp mount (12) and the brace summer (13) be arranged on described clamp mount (12), described roll positioning disk (8) is arranged on described brace summer (13), and described roll positioning disk (8) arranges adjusting device (14).
3. ellipse spiral flat tube preparation facilities according to claim 1 and 2, it is characterized in that: in described adjacent twice roll positioning disk (8), molding roller is to the roll shaft place plane parallel of (9), and parallels with the both ends of the surface of roll positioning disk (8).
4. ellipse spiral flat tube preparation facilities according to claim 1 and 2, is characterized in that: the two ends of described molding roller (10) are connected in described roll positioning disk (8) by bearing.
5. ellipse spiral flat tube preparation facilities according to claim 1 and 2, is characterized in that: the output shaft of described ejector sleeve device (3) and described ejector sleeve guide cylinder (4) coincide with the axle center of described oval ducts through hole (11).
6. ellipse spiral flat tube preparation facilities according to claim 1 and 2, is characterized in that: be provided with 3 ~ 6 roads roll positioning disk (8) in described built-up jig (7).
7. utilize ellipse spiral flat tube preparation facilities described in claim 1 to prepare a method for ellipse spiral flat tube, it is characterized in that, it comprises the following steps successively:
1) first, regulate roll positioning disk (8), make the major axis of the oval ducts through hole (11) in every one roll positioning disk (8) all be positioned at same plane;
2) then, circular straighttube is put into ejector sleeve guide cylinder (4), start electric-control system (2) and control ejector sleeve device (3) operation promotion circular straighttube through all oval ducts through holes (11) in adjustable roller roller system (5), after forming first section of elliptical tube of certain length, control ejector sleeve device (3) out of service;
3) according to the angle of spiral and the regulation by pitch roll positioning disk (8) of required ellipse spiral flat tube, make shape between the major axis of adjacent two oval ducts through holes (11) at a certain angle;
4) circular straighttube is put into ejector sleeve guide cylinder (4), regulate electric-control system (2) to control ejector sleeve device (3) and run promotion circular straighttube through all oval ducts through holes (11) in adjustable roller roller system (5), form certain length ellipse spiral flat tube;
5) control ejector sleeve device (3) out of service, cold-drawing device (6) is connected on the ellipse spiral flat tube passing adjustable roller roller system (5);
6) electric-control system (2) is again regulated to control described ejector sleeve device (3) and cold-drawing device (6) synchronous operation, circular straighttube, through all oval ducts through holes (11) in adjustable roller roller system (5), namely forms ellipse spiral flat tube.
8. prepare the method for ellipse spiral flat tube according to claim 7, it is characterized in that: described step 1) in, when regulating roll positioning disk (8), being the first roll positioning disk (81) wherein near ejector sleeve device (3), with the first roll positioning disk (81) for benchmark, the second roll positioning disk (82) that will be adjacent with the first roll positioning disk (81) is clockwise or rotate counterclockwise certain angle, make shape between the major axis of two oval ducts through holes (11) of the first roll positioning disk (81) and the second roll positioning disk (82) at a certain angle, again respectively by with the second roll positioning disk (82) corresponding clockwise or counterclockwise and rotational angle successively remaining roll positioning disk (8) is carried out rotation and regulates.
9. according to claim 7 or 8, prepare the method for ellipse spiral flat tube, it is characterized in that: step 1) in, the angle formed between the major axis of adjacent two oval ducts through holes (11) is 15 ~ 45 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260283.9A CN103331349B (en) | 2013-06-26 | 2013-06-26 | Preparation device and method of oval spiral flat pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260283.9A CN103331349B (en) | 2013-06-26 | 2013-06-26 | Preparation device and method of oval spiral flat pipe |
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| CN103331349A CN103331349A (en) | 2013-10-02 |
| CN103331349B true CN103331349B (en) | 2015-06-17 |
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| CN201310260283.9A Active CN103331349B (en) | 2013-06-26 | 2013-06-26 | Preparation device and method of oval spiral flat pipe |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106238609B (en) * | 2016-08-31 | 2018-08-03 | 广东诺科冷暖设备有限公司 | A kind of manufacturing method of flat spiral coil pipe |
| RU2726859C1 (en) * | 2019-11-15 | 2020-07-16 | Публичное акционерное общество "Машиностроительный завод "ЗиО-Подольск" (ПАО "ЗиО-Подольск") | Assembly complex for manufacturing of twisted heat exchangers |
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| CN103331349A (en) | 2013-10-02 |
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