CN101829837B - Automatic welding device and method for welding straight fins on inner wall of long small-bore seamless steel tube - Google Patents
Automatic welding device and method for welding straight fins on inner wall of long small-bore seamless steel tube Download PDFInfo
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- CN101829837B CN101829837B CN2010101647701A CN201010164770A CN101829837B CN 101829837 B CN101829837 B CN 101829837B CN 2010101647701 A CN2010101647701 A CN 2010101647701A CN 201010164770 A CN201010164770 A CN 201010164770A CN 101829837 B CN101829837 B CN 101829837B
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- 238000003466 welding Methods 0.000 title claims abstract description 148
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005476 soldering Methods 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910000679 solder Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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Abstract
The invention relates to an automatic welding device and an automatic welding method for welding straight fins on the inner wall of a long small-bore seamless steel tube, which are characterized in that: the automatic welding device consists of a power-supply control device, a frame (10), a driving device (1), a travelling mechanism (9), a support arm (6), a regulating device (7) of the support arm (6), a wire feeder (8) and a welding gun head (4) with a wire spitting orifice of solder wires; and the automatic welding method comprises that: a steel tube (2) to be welded is fixed relative to the travelling mechanism (9); a straight fin (11) is arranged in the steel tube (2) and are fixed relatively; the welding gun head (4) aligns with a welding starting point, the travelling mechanism (9) is started, and simultaneously the wire feeder (8) and the welding gun head (4) are started for welding; when the travelling mechanism (9) travels, the welding gun head (4) enters the steel tube (2) to perform movable welding along a welding line; and when the welding gun head (4) welds to the end point of the welding line, a travel switch acts, the wire feeder (8) stops feeding the wires, and the welding gun head (4) stops welding so as to complete the welding of one straight fin (11).
Description
One, technical field
The present invention relates to a kind of automatic soldering device and welding method, be specially the automatic soldering device and the welding method of welding straight fins on inner wall of long small-bore seamless steel tube.
Two, background technology
In industry is made, sometimes need be at welding straight fins on inner wall of long small-bore seamless steel tube.
As: manufacture and design in the process at heat transmission equipments such as the cold slag machines of CFBB, heat exchange area is a very important parameter.For improving the heat exchange area of heat exchanger; Improve heat exchange efficiency; Common measure all is to adopt the mode that increases heat exchange fin, under the certain situation of the heat of heat exchanger, realizes minimizing of volume structure, or under the certain situation of volume structure, realizes the maximization of heat.In the prior art, for adopting aperture path length steel pipe as for the heat exchanger of heat exchange element, the welding of intraductal heat exchange fin; Because of its diameter restrictions; Can't implement full up weldering or intermittent weld, have only the form that adopts light pipe, or adopt the form of roll bending to be formed with slit-tube.Adopt the light pipe form, then cause the heat exchanger heat exchange efficiency low, volume increases, and manufacturing cost increases thereupon; Adopt the mode of seamed pipe,, the welding capacity of device fabrication process is significantly increased, increased the probability of equipment leakage simultaneously, for hidden danger has been buried in the long period safe handling of equipment though can solve the Welding Problems of fin.
Chinese patent discloses a kind of twin fin heat exchanger tube for No. 93200810.0, and it mainly comprises heat exchange pipe body, and the fin that is arranged on the body inside and outside wall is formed, and is characterised in that: the footpath that the outer fin of annular is distributed on the heat exchange pipe body outer wall makes progress; The straight-plate-type inner fin be uniformly distributed with radially be welded on the heat exchange pipe body inwall axially on.The heat exchanger tube of this utility model compared with prior art can not receive the caliber size, pipe length, and the height of fin and the restriction of quantity produce thermal contact resistance hardly, so its heat transfer efficiency can increase substantially.For example, when outer wing ratio is 8, interior wing ratio is 4 o'clock, and its heat output is 5.25 times of same size light pipe.But should technology still do not have open how to the technical scheme of long small-bore seamless steel tube inwall welding fin.
Three, summary of the invention
The objective of the invention is: automatic soldering device and welding method that a kind of welding straight fins on inner wall of long small-bore seamless steel tube is provided; It can effectively solve the full up weldering problem of fin of heat exchange element (long small-bore seamless steel tube) in the heat transmission equipments such as cold slag machine; Thereby optimize the manufacturing process of this type of heat exchanger heat exchange element; Reduce manufacturing cost, enhance productivity.
The concrete technical scheme of its technical problem of solution of the present invention is:
A kind of automatic soldering device of welding straight fins on inner wall of long small-bore seamless steel tube; It is characterized in that: this device is made up of the arc welding gun head of the adjusting device of power control, frame, drive unit, walking mechanism, support arm and support arm, wire feeder, tape welding silk orifice of spinneret, wherein:
Walking mechanism is loaded on the frame and on frame and moves reciprocatingly, and walking mechanism is driven by drive unit;
The travel switch of control walking mechanism stroke is housed on frame;
The adjusting device of support arm and support arm is loaded on the frame, and arc welding gun head is loaded on the support arm front end, and arc welding gun head is suspended on above the walking mechanism.
When adopting the floor pavement track, when walking mechanism came and went along track, ground just was equivalent to frame.That is to say that in the present invention, frame should be done to enlarge and explain that promptly ground also is a kind of frame.Power control can adopt common VFC power supply.The adjusting device of support arm is mainly used in the height of fine setting support arm and the angle of arc welding gun head; Specifically can on frame, open a vertical slot; The support arm afterbody has been attacked screw thread, and the support arm afterbody is fixed on the frame through nut after passing this groove, can certainly adopt other common modes.
Further scheme is: be fixed with the foreign material cleaning piece on the support arm, foreign material cleaning piece front end is positioned at arc welding gun head orifice of spinneret front.So that before welding, carry out the impurity cleaning by foreign material cleaning piece butt welded seam.
Further scheme is: at the support arm front end retracted support detent mechanism is housed.In order to guarantee to remain normal clearance between arc welding gun head when work and the weld seam; When support arm is longer; For preventing to cause the support arm swing because of factors such as mechanical oscillation; Be necessary to establish one interim " moving fulcrum " to support arm, the flexible rod member of retracted support detent mechanism just can be realized contacting formation " moving fulcrum " with the long small-bore seamless steel tube workpiece inwall of different inner diameters all the time.
Further scheme is: the fixture that on walking mechanism, is provided with fixation workpiece.Workpiece and walking mechanism do not misplace in order to guarantee to weld, and generally need workpiece be fixed on the walking mechanism with fixture, and fixture can be multiple common fixed forms such as binding strap, anchor clamps.
Further scheme is: support arm is a hollow tube, the hollow formation channel of welding wire of hollow tube, and channel of welding wire is communicated with the orifice of spinneret of arc welding gun head.
Further scheme is: arc welding gun head is the carbon dioxide gas arc welding arc welding gun head.
A kind of method that adopts automatic soldering device of the present invention to welding straight fins on inner wall of long small-bore seamless steel tube is characterized in that:
A, long small-bore seamless steel tube to be welded is placed on the walking mechanism of this automatic soldering device, and makes long small-bore seamless steel tube and walking mechanism relative fixed;
B, straight fins to be welded is put into long small-bore seamless steel tube; And after adjusting to precalculated position and predetermined angular; Fixed mount with preparation carries out straight fins temporary fixed; Make between straight fins and the long small-bore seamless steel tube and can't carry out relative motion, perhaps adopt the spot welding mode that straight fins is welded in the long small-bore seamless steel tube, perhaps adopt other common mode that straight fins is temporarily fixed in the long small-bore seamless steel tube;
C, with arc welding gun head by after setting requirements and aiming at welding starting point weld seam, start power control and make the walking mechanism motion, start the wire feeder wire feed simultaneously and start arc welding gun head and weld;
D, when walking mechanism is gone, the arc welding gun head that is loaded on the support arm front end gets in the long small-bore seamless steel tube and along weld movement and welds;
E, be welded to welding during terminal point when arc welding gun head, the travel switch action, wire feeder stops wire feed, and arc welding gun head stops welding, just accomplishes the welding of first straight fins;
F, startup power control, drive unit makes the walking mechanism backward going, and when walking mechanism drove to the welding starting point, travel switch moved once more, and walking mechanism stops, and long small-bore seamless steel tube and arc welding gun head return to initial position;
G, unclamp and rotate long small-bore seamless steel tube locates position to be welded to next after, make long small-bore seamless steel tube and walking mechanism relative fixed once more, and repeat B, C, D, E, F operation successively, just accomplish the welding of second straight fins;
H, repeatedly repeat A, B, C, D, E, F, G operation, just accomplish welding, up to accomplishing regulation welding quantity to many straight fins of long small-bore seamless steel tube inwall.
In the inventive method: when adopting fixed mount that straight fins is carried out when temporary fixed; Fixed mount can be on one side of an angle steel, to be fixed with a band iron; This band iron parallel with the another side of angle steel and and the another side of angle steel between form groove; Straight fins is embedded in this groove, and the angle on angle steel both sides should be confirmed according to the design angle between welding back straight fins and the long small-bore seamless steel tube inwall.After the straight fins welding is good, extracts fixed mount out and get final product.
Characteristics of the present invention are: through the method for this automatic soldering device and corresponding welding straight fins; Realized the full up welder's skill of automation of straight fins in the long small-bore seamless steel tube; Effectively realize the raising of heat exchange efficiency; Can improve the safety in utilization of whole heat transmission equipment again synchronously, and the whole service life of equipment.Particularly:
1) utilizes welding arm to replace the traditional hand welding manner, save labour cost, reduce labor intensity;
2) through the automatic welding of straight fins in support arm (welding arm) the realization long small-bore seamless steel tube, increased the heat exchange area of heat exchange element, improved heat exchange efficiency.
3) draw-gear adopts the VFC mode, can adjust the translational speed of welded part according to the welding job needs in real time, guarantees weldquality;
4) welding of ordinary straight weld seam can be accomplished automatically, the welding of straight fins in the multiple special-shaped seamless steel pipes such as typical circular seamless steel pipe, hexagon seamless steel pipe can be accomplished.
6) Type of Welding is full up weldering, has both guaranteed weld strength, improves simultaneously effectively the coefficient of heat transfer, has guaranteed that heat exchanger is burnt out by overheated being used for fashionable being unlikely to of high temperature heat exchange field, effectively prolongs the service life of equipment.
Four, description of drawings
Below in conjunction with accompanying drawing the present invention is described further.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the sectional drawing I-I of the welding six rib pipes of Fig. 1.
Fig. 3 is the sectional drawing I-I of the welding pipe of Fig. 1.
Among the figure: 1, drive unit, 2, long small-bore seamless steel tube, 3, the foreign material cleaning piece, 4, arc welding gun head; 5, supporting and positioning mechanism, 6, support arm, 7, adjusting device, 8, wire feeder; 9, walking mechanism, 10, frame, 11, straight fins (band steel), 12, fixed mount.
Five, the specific embodiment
As shown in Figure 1: a kind of automatic soldering device of welding straight fins on inner wall of long small-bore seamless steel tube; It is characterized in that: this device is made up of the arc welding gun head 4 of the adjusting device 7 of power control, frame 10, drive unit 1, walking mechanism 9, support arm 6 and support arm 6, wire feeder 8, tape welding silk orifice of spinneret, wherein:
The travel switch of control walking mechanism 9 strokes is housed on frame 10;
The adjusting device 7 of support arm 6 and support arm 6 is loaded on the frame 10, and arc welding gun head 4 is loaded on support arm 6 front ends, and arc welding gun head 4 is suspended on above the walking mechanism 9.
Be fixed with foreign material cleaning piece 3 on the support arm 6, foreign material cleaning piece 3 front ends are positioned at arc welding gun head 4 orifice of spinneret fronts.
At support arm 6 front ends retracted support detent mechanism 5 is housed.
On walking mechanism 9, be provided with the fixture of fixation workpiece.
Arc welding gun head 4 is a carbon dioxide gas arc welding arc welding gun head 4.
A kind of method that adopts automatic soldering device of the present invention to welding straight fins on inner wall of long small-bore seamless steel tube is characterized in that:
A, long small-bore seamless steel tube to be welded 2 is placed on the walking mechanism 9 of this automatic soldering device, and makes long small-bore seamless steel tube 2 and walking mechanism 9 relative fixed;
B, straight fins to be welded 11 is put into long small-bore seamless steel tube 2; And after adjusting to precalculated position and predetermined angular; Fixed mount 12 with preparation carries out straight fins 11 temporary fixed; Make between straight fins 11 and the long small-bore seamless steel tube 2 and can't carry out relative motion, perhaps adopt the spot welding mode that straight fins 11 is welded in the long small-bore seamless steel tube 2;
C, adjustment adjusting device 7 by after setting requirement aligning welding starting point weld seam, start arc welding gun head 4 power control and make walking mechanism 9 motions, start wire feeder 8 wire feeds and 4 weldings of startup arc welding gun head simultaneously;
D, when walking mechanism 9 is gone, the arc welding gun head 4 that is loaded on support arm 6 front ends gets in the long small-bore seamless steel tubes 2 and along weld movement and welds;
E, be welded to when meeting terminal point when arc welding gun head 4, the travel switch action, wire feeder 8 stops wire feed, and arc welding gun head 4 stops welding, just accomplishes the welding of first straight fins 11;
F, startup power control, drive unit makes walking mechanism 9 backward goings, and when walking mechanism 9 drove to the welding starting point, travel switch moved once more, and walking mechanism 9 stops, and long small-bore seamless steel tube 2 returns to initial position with arc welding gun head 4;
G, unclamp and rotate after long small-bore seamless steel tube 2 locates position to be welded to next, make long small-bore seamless steel tube 2 and walking mechanism 9 relative fixed once more, and repeat B, C, D, E, F operation successively, just accomplish the welding of second straight fins 11;
H, repeatedly repeat A, B, C, D, E, F, G operation, just accomplish welding, up to accomplishing regulation welding quantity to many straight fins of long small-bore seamless steel tube 2 inwalls 11.
Fixed mount 12 is on one side of an angle steel, to be fixed with a band iron; This band iron parallel with the another side of angle steel and and the another side of angle steel between form groove; Straight fins 11 is embedded in this groove, and the angle on angle steel both sides should be confirmed according to the design angle between welding back straight fins 11 and long small-bore seamless steel tube 2 inwalls.
During welding; Start wire feeder 8 and drive unit 1, welding wire passes support arm 6 and draws from the commissure with certain speed through wire feeder 8; Its wire feed rate is according to the big I flexible of weld seam; Long small-bore seamless steel tube 2 slowly moves forward with certain speed with walking mechanism 9, and welding wire forms relative motion with seamless steel pipe, thus the omnidistance full weld of realization weld seam.In the welding process, supporting and positioning mechanism 5 and adjusting device 7 can be guaranteed arc welding gun head 4 off-straight weld seam not in welding process, thereby have effectively guaranteed welding quality.In the present embodiment, on the frame 10 bearing is installed, walking mechanism 9 is gone on frame 10 through bearing.Two ends respectively are provided with travel switch on the frame 10.
Long small-bore seamless steel tube 2 among Fig. 2 is six rib pipes, and the long small-bore seamless steel tube 2 among Fig. 3 is a round steel pipe, and its welding method is identical.
Claims (8)
1. the automatic soldering device of a welding straight fins on inner wall of long small-bore seamless steel tube; It is characterized in that: this device is made up of the arc welding gun head (4) of the adjusting device (7) of power control, frame (10), drive unit (1), walking mechanism (9), support arm (6) and support arm (6), wire feeder (8), tape welding silk orifice of spinneret, wherein:
Walking mechanism (9) is loaded on the frame (10) and on frame (10), moves reciprocatingly, and walking mechanism (9) is driven by drive unit (1);
The travel switch of control walking mechanism (9) stroke is housed on frame (10);
The adjusting device (7) of support arm (6) and support arm (6) is loaded on the frame (10), and arc welding gun head (4) is loaded on support arm (6) front end, and arc welding gun head (4) is suspended on above the walking mechanism (9).
2. the automatic soldering device of welding straight fins on inner wall of long small-bore seamless steel tube according to claim 1, it is characterized in that: be fixed with foreign material cleaning piece (3) on the support arm (6), foreign material cleaning piece (3) front end is positioned at arc welding gun head (4) orifice of spinneret front.
3. the automatic soldering device of welding straight fins on inner wall of long small-bore seamless steel tube according to claim 1 is characterized in that: at support arm (6) front end retracted support detent mechanism (5) is housed.
4. the automatic soldering device of welding straight fins on inner wall of long small-bore seamless steel tube according to claim 1 is characterized in that: the fixture that on walking mechanism (9), is provided with fixation workpiece.
5. the automatic soldering device of welding straight fins on inner wall of long small-bore seamless steel tube according to claim 1, it is characterized in that: support arm (6) is a hollow tube, the hollow formation channel of welding wire of hollow tube, channel of welding wire is communicated with the orifice of spinneret of arc welding gun head (4).
6. the automatic soldering device of welding straight fins on inner wall of long small-bore seamless steel tube according to claim 1, it is characterized in that: arc welding gun head (4) is a carbon dioxide gas arc welding arc welding gun head (4).
7. automatic soldering method to welding straight fins on inner wall of long small-bore seamless steel tube is characterized in that:
A, long small-bore seamless steel tube to be welded (2) is placed on the walking mechanism (9) of this automatic soldering device, and makes long small-bore seamless steel tube (2) and walking mechanism (9) relative fixed;
B, straight fins to be welded (11) is put into long small-bore seamless steel tube (2); And after adjusting to precalculated position and predetermined angular; Fixed mount (12) with preparation carries out straight fins (11) temporary fixed; Make between straight fins (11) and the long small-bore seamless steel tube (2) and can't carry out relative motion, perhaps adopt the spot welding mode that straight fins (11) is welded in the long small-bore seamless steel tube (2);
C, adjustment adjusting device (7) by after setting requirement aligning welding starting point weld seam, start arc welding gun head (4) power control and make walking mechanism (9) motion, start wire feeder (8) wire feed and startup arc welding gun head (4) welding simultaneously;
D, walking mechanism (9) are when going, and the arc welding gun head (4) that is loaded on support arm (6) front end gets in the long small-bore seamless steel tube (2) and along weld movement and welds;
E, be welded to when meeting terminal point when arc welding gun head (4), the travel switch action, wire feeder (8) stops wire feed, and arc welding gun head (4) stops welding, just accomplishes the welding of first straight fins (11);
F, startup power control; Drive unit makes walking mechanism (9) backward going, and when walking mechanism (9) drove to the welding starting point, travel switch moved once more; Walking mechanism (9) stops, and long small-bore seamless steel tube (2) and arc welding gun head (4) return to initial position;
G, unclamp and rotate long small-bore seamless steel tube (2) locates position to be welded to next after, make long small-bore seamless steel tube (2) and walking mechanism (9) relative fixed once more, and repeat B, C, D, E, F operation successively, just accomplish the welding of second straight fins (11);
H, repeatedly repeat A, B, C, D, E, F, G operation, just accomplish welding, up to accomplishing regulation welding quantity to many straight fins of long small-bore seamless steel tube (2) inwall (11).
8. the method for welding straight fins on inner wall of long small-bore seamless steel tube according to claim 7; It is characterized in that: fixed mount (12) is on one side of an angle steel, to be fixed with a band iron; This band iron parallel with the another side of angle steel and and the another side of angle steel between form groove; Straight fins (11) is embedded in this groove, and the angle on angle steel both sides should be confirmed according to the design angle between welding back straight fins (11) and long small-bore seamless steel tube (2) inwall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101647701A CN101829837B (en) | 2010-05-07 | 2010-05-07 | Automatic welding device and method for welding straight fins on inner wall of long small-bore seamless steel tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101647701A CN101829837B (en) | 2010-05-07 | 2010-05-07 | Automatic welding device and method for welding straight fins on inner wall of long small-bore seamless steel tube |
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| CN101829837B true CN101829837B (en) | 2012-04-04 |
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| GB788534A (en) * | 1954-12-30 | 1958-01-02 | Humes Ltd | Improvements in and relating to electric arc welding |
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Denomination of invention: Automatic welding device and method for welding straight fins on inner wall of long small-bore seamless steel tube Effective date of registration: 20130609 Granted publication date: 20120404 Pledgee: Mianyang commercial bank Limited by Share Ltd science and Technology Branch Pledgor: KINGTEC ENERGY TECHNOLOGY CO., LTD. Registration number: 2013990000367 |
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