CN1778510A - Butt-joint special apparatus and method for aluminium alloy pipe - Google Patents
Butt-joint special apparatus and method for aluminium alloy pipe Download PDFInfo
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- CN1778510A CN1778510A CN 200410084465 CN200410084465A CN1778510A CN 1778510 A CN1778510 A CN 1778510A CN 200410084465 CN200410084465 CN 200410084465 CN 200410084465 A CN200410084465 A CN 200410084465A CN 1778510 A CN1778510 A CN 1778510A
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- aluminium
- alloy pipe
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- docking calculation
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Abstract
A machine for the butt joint of two Al-alloy pipes is composed of a step motor, a clamping chuck with dual clamping surfaces driven synchronously by said step motor, an AC arc welder for welding both ends of two Al-alloy pipes together, and a controller.
Description
Technical field
The present invention relates to the metal tube welding field, relate in particular to a kind of aluminium-alloy pipe butt joint special machine and aluminium-alloy pipe docking calculation.
Background technology
In many chilling units, the conduit of its condenser system all adopts red copper, if can adopt aluminium-alloy pipe to substitute copper tube, the production cost of condenser system just can reduce greatly so, because the proportion of copper almost is three times of aluminium alloy, the unit price of copper per ton is higher 1.5 times than aluminium alloy again, the amount of money of buying one ton of copper tube according to conversion can be used to buy 5 tons of aluminium alloy tubules, therefore adopt aluminium-alloy pipe, substitute copper tube, the condenser production cost of chilling unit can reduce about 80%.
But aluminium-alloy pipe substitutes the difficult problem of copper tube maximum is how to resolve the high-quality welding problem of aluminum alloy joint.
Under normal conditions, manual straight pipe duct butt-welding method is all adopted in the welding of aluminium-alloy pipe, and this butt joint need be adopted welding wire, and the commissure easily produces swells, and causes stress to concentrate, and there is following deficiency in the joint of this thickness sudden change:
1. because the sudden change of joint easily causes stress to concentrate, be unfavorable for the bending operation processing of road, back.
2. must use welding wire when welding, weld seam easily produces bubble, and not weld penetration has defectives such as residue.
3. with artificial welding, two pipes are difficult for aligning, and influenced greatly by quality of workers, and product qualified rate is low, and efficiency is low, the production cost height.
For overcoming the defective in the above-mentioned welding; On the one hand novel joint design and welding method will be arranged, the aspect must design one and can finish the novel joint special equipment of welding automatically in addition.
Summary of the invention
The object of the present invention is to provide a kind of thin-walled small-diameter aluminium alloy pipe butt joint special machine that is applicable to, to overcome the deficiency of existing welding equipment.Can improve the welding effect of thin-walled small-diameter aluminium alloy pipe.
For achieving the above object, the invention provides a kind of aluminium-alloy pipe butt joint special machine, comprise stepper motor, bilateral chuck, ac arc wedling machine and control appliance, wherein, stepper motor drives the bilateral chuck and rotates synchronously; The bilateral chuck is the clamping weldment respectively; The starting of control appliance control step motor and stop, the carry of ac arc wedling machine and give up the throne, current switching, striking and stop weldering and the conveying of gas.
Wherein, described stepper motor converts the electric impulse signal of control appliance output to corresponding angular, and whenever control appliance adds a pulse signal in stepper motor, it just drives the bilateral chuck changes synchronously and move a step.The chuck of described bilateral chuck is made of copper.Described ac arc wedling machine is the tungsten electrode alternating-current argon arc welder, and the carry of its welding torch is implemented by pneumatic means with giving up the throne, and pneumatic means is pressed controller instruction motion again.Described control appliance is a Programmable Logic Controller or a single-chip microcomputer.
Another object of the present invention is to provide the aluminium-alloy pipe butt joint corresponding welding method of special machine a kind of and of the present invention.
For achieving the above object, the invention provides a kind of aluminium-alloy pipe docking calculation, it is characterized in that may further comprise the steps: a. at the aluminium tube joint place outside form projection aluminium ring b. at aluminium tube joint place liner and the close-fitting object c. of aluminum pipe internal diameter with the tight clamping of joint both sides aluminum pipe, earlier with little electric current weldering one circle, again with big electric current weldering one to two circle, then with decay current weldering 1/6 circle.
Wherein, described projection aluminium ring can be the aluminum casing of overcoat, and sleeve pipe should be in the seam center, its internal diameter should with closely cooperated by the welded tube external diameter, also can be that a side aluminium-alloy pipe becomes concavity and the socket of opposite side aluminium alloy to form with mechanical flange; Projection aluminium ring length should be less than the electric arc width that AC arc welding produced.
Described and the close-fitting object of aluminum pipe internal diameter is a copper tube.This copper tube has the longitudinal joint of one 0.01 to 0.5 mm wide.
Described big electric current is the 50-55 ampere; Little electric current is the 28-32 ampere; The time of weldering one circle is 15 seconds.
The present invention adopts novel pipe joint structure, without welding wire, also can obtain high-quality joint.Thereby the welding method of automatic welding equipment and sequencing has that weld seam does not swell because the present invention has adopted, no bubble, no residue, can not burn-through, advantage such as easy to operate, both reduced cost, improved welding quality again.It is many to have overcome artificial welding quality defects, and the low deficiency that waits of efficiency makes and adopts the high copper tube of aluminium-alloy pipe substitute valence to become a reality as the condensation pipe of chilling unit, reduces production costs greatly.
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is an aluminium-alloy pipe butt joint special machine structural representation of the present invention.
Fig. 2 is a system principle diagram of the present invention.
Fig. 3 is an aluminium tube joint of the present invention place structural representation.
Fig. 4 is a process chart of the present invention.
The specific embodiment
Relevant detailed description of the present invention and technology contents, existing as follows with regard to accompanying drawings:
At first see also Fig. 1, Fig. 1 is an aluminium-alloy pipe butt joint special machine structural representation of the present invention.All parts are arranged on the fixing support 11 among this embodiment, the transmission system that stepper motor 1 drives in the both sides head box 2 by rotating shaft 8 respectively, the head box 2 of both sides is being respectively equipped with the aluminium-alloy pipe 10 that a copper chuck 6 is welded with clamping by driving on 5, two scroll chucks 5 of scroll chuck of both sides with 4 synchronously respectively.Wherein, the starting of stepper motor 1 and stopping by control cabinet 12 control.This aluminium-alloy pipe butt joint special machine also is provided with an argon arc welding machine 9, its welding torch 7 is controlled carries by control cabinet 12 and is given up the throne, when welding torch 7 carries, it is in the welding position and contacts with brush 3 and argon arc welding machine 9 constitutes loops and starts working, the current switching of argon arc welding machine 9, striking and stop weldering, and the conveying of gas is also by control cabinet 12 control.
The present invention selects for use stepping motor 1 as power source, mainly is because stepping motor 1 can convert the pulse signal of electricity to corresponding angular.Exactly when control appliance adds a pulse signal in motor, it is just transported and moves a step, and its forms of motion is step-type, and such motion mode control is accurately high, and is convenient to programming Control.Adopt copper chuck 6 to clamp in the present embodiment by the long tube at welded pipe joint two ends and short tube.Make chuck though also can adopt other material in the present invention, or with the chuck integrated design on chuck, chuck also is not limited only to scroll chuck, but copper chuck 6 has another important function, promptly be used for dispelling the heat, just right with control by the weldpool melt of welded pipe joint.Adopted the tungsten electrode alternating-current argon arc welder in order to obtain preferable welding effect in certain embodiments, the ac arc wedling machine that adopts other type certainly also is feasible.Have as rotating shaft 8, head box 2 in the present embodiment, be with 4 synchronously, transmission and permanent plant such as support 11, but in some preferred embodiments, can cancel these devices to simplify structure of the present invention by the integrated design of stepper motor 1 and chuck 5.
Control cabinet in the embodiment of the invention or control appliance can be any control device, as equipment such as single-chip microcomputer, relay process controller, programmable logic controller (PLC)s.Wherein, the relay programming is simple, low price, but flexibility is not high, poor reliability, and will be equipped with more complex mechanical construction, generally is used for oversimplifying the control occasion, and single-chip microcomputer then price is higher.And PLC compares with common microcomputer, many tangible characteristics have been arranged in design: the reliability height, adaptability is good, volume is little, the programming is directly perceived simple, except basic instruction catalogue programming mode, can also adopt trapezoidal pattern programming mode, flow process to carry out the order functional diagram mode that designs along control.Its complete function, structural module, can high speed processing transmission data, have the convenient instruction of envelopeization, operation, link are easy, interface function is strong.
A preferred embodiment of the present invention has selected for use FX1N-60MTPLC as control appliance.The FX series Programmable logic Controller (PLC) is as a kind of Programmable Logic Controller that uses the control of PLC language.It provides the software component of a large amount of practicalities, supports multiple programming instruction, with and trapezoidal pattern programming method, for the programming personnel provides a workbench quite efficiently.Show according to the retrieval and adopt PLC to weld thin-wall aluminum alloy pipe beyond example still as the control core.
See also Fig. 2, Fig. 2 is a system principle diagram of the present invention.In this embodiment, constituted an air supply system by argon bottle, pressure-reducing valve, electromagnetic gas valve, flowmeter, for welding torch provides gas; Serve as control appliance by PLC, connect pneumatic means respectively with the carry of control welding torch or give up the throne, connect power supply and supply with the switching of welding torch current/voltage, connect welding torch, connect rotation and then the control welding position of stepper motor with the control aluminum pipe with the control air inlet with control.Wherein, the electric pulse instruction that pneumatic means is accepted PLC drives welding torch and makes carry or the motion of giving up the throne, and welding torch is then approaching thus or away from the aluminum pipe to be welded of stepper motor institute driven rotary.Power supply switches for the welding torch power supply is controlled between its big or small electric current that provides and the decay current pattern by the instruction of PLC electric pulse itself simultaneously.The air valve of welding torch is subjected to PLC electric pulse instruction control to open or close.The rotating speed of stepper motor and startup, stop also electric pulse instruction control by PLC.So just can be by to PLC programming, set the change frequency of its electric pulse and parameter that output port is controlled all parts and set and workflow, can the automatic accurate welding process of inerrably carrying out a complexity.
Welding method of the present invention may further comprise the steps: a. at the aluminium tube joint place outside form projection aluminium ring b. at aluminium tube joint place liner and the close-fitting object c. of aluminum pipe internal diameter with the tight clamping of joint both sides aluminum pipe, earlier with little electric current weldering one circle, again with big electric current weldering one to two circle, then with decay current weldering 1/6 circle.
See also Fig. 3, Fig. 3 is an aluminium tube joint of the present invention place structural representation.Described projection aluminium ring can be the aluminum casing 23 of overcoat, and sleeve pipe 23 should be in the seam center of two aluminum pipes 21,24, and its internal diameter should closely cooperate with quilt weldering aluminum pipe 21,24 external diameters.Also can be that a side aluminium-alloy pipe becomes concavity and the socket of opposite side aluminium alloy to form with mechanical flange; Projection aluminium ring 23 length should be less than the electric arc width that AC arc welding produced.Flange is long for 3.5mm or less than 3.5mm among the embodiment.
Described and the close-fitting object of aluminum pipe internal diameter is a copper tube 23.The external diameter of copper tube 23 should equal by the internal diameter of welded tube 21,24, the about 0.5mm of copper tube 23 thickness, length is 15mm, its effect be make by welded tube 21,24 inwalls smooth; Also play simultaneously thermolysis, open a seam on the copper pipe 23, generally stitch wide at 0.01～0.5mm for making it and being fitted snugly in by welded tube 21,24 inwalls.
At external diameter is 8mm, and internal diameter is the general aluminum pipe of 6.4mm, and welding current is that little electric current is 30 amperes, and big electric current is 53 amperes, and the time of weldering one circle is 15 seconds.If pipe sizing changes, welding current and time are also said and do corresponding change.
See also Fig. 4, Fig. 4 is a process chart of the present invention.By the control pneumatic means welding torch is put in place at t1 time PLC; Ensuing t2 time PLC control welding torch is opened air valve and is begun to supply gas; Then welding torch is in t3 time striking; The t4 time after the arc stability burning, PLC makes the chuck rotation by the control step motor, and the power supply of PLC control simultaneously applies the electric current of 28-32A to welding torch; The t5 time after chuck revolves and turns around, PLC control power supply applies the electric current of 50-55A to welding torch; Chuck revolves the t6 time after turning around again, and PLC control power supply changes into to welding torch and applies decay current; Chuck rotates the t7 time behind the sixth circle again, and PLC control dump is to the power supply of welding torch; Ensuing t8 time PLC stops the rotation chuck by the control step motor; At t9 time PLC is that welding torch is stopped the supple of gas or steam, resetted and wait for for the second time and starts by control welding torch air valve gentle moving device respectively.
Above introduce, it only is preferred embodiment of the present invention, can not limit scope of the invention process with this, be the variation of the equalization done according to the present invention of the those skilled in the art in the present technique field, for example each step among the above embodiment be equal to and replace or each device is made up or discrete.And the improvement known of those skilled in that art, all should still belong to the scope that patent of the present invention contains.
Claims (15)
1, a kind of aluminium-alloy pipe butt joint special machine is characterized in that comprising stepper motor, bilateral chuck, ac arc wedling machine and control appliance, and wherein, stepper motor drives the bilateral chuck and rotates synchronously; The bilateral chuck is the clamping weldment respectively; The starting of control appliance control step motor and stop, the carry of ac arc wedling machine welding torch and give up the throne, current switching, striking and stop weldering and the conveying of gas.
2, a kind of aluminium-alloy pipe butt joint special machine as claimed in claim 1, it is characterized in that described stepper motor converts the electric impulse signal of control appliance output to corresponding angular, whenever control appliance adds a pulse signal in stepper motor, it just drives the bilateral chuck changes synchronously and moves a step.
3, a kind of aluminium-alloy pipe butt joint special machine as claimed in claim 1, the chuck that it is characterized in that described bilateral chuck is made of copper.
4, a kind of aluminium-alloy pipe butt joint special machine as claimed in claim 1 is characterized in that described ac arc wedling machine is the tungsten electrode alternating-current argon arc welder, and the carry of its welding torch is implemented by pneumatic means with giving up the throne, and pneumatic means is pressed controller instruction motion again.
5, a kind of aluminium-alloy pipe butt joint special machine as claimed in claim 1 is characterized in that described control appliance is a Programmable Logic Controller.
6, a kind of aluminium-alloy pipe butt joint special machine as claimed in claim 1 is characterized in that described control appliance is a single-chip microcomputer.
7, a kind of aluminium-alloy pipe docking calculation is characterized in that may further comprise the steps:
A. form projection aluminium ring in outside, aluminium tube joint place
B. at aluminium tube joint place liner and the close-fitting object of aluminum pipe internal diameter
C. with the tight clamping of joint both sides aluminum pipe, earlier with little electric current weldering one circle, again with big electric current weldering one to two circle, then with decay current weldering 1/6 circle.
8, a kind of aluminium-alloy pipe docking calculation as claimed in claim 7 is characterized in that described projection aluminium ring can be the aluminum casing of overcoat, and sleeve pipe should be in the seam center, its internal diameter should with closely cooperated by the welded tube external diameter.
9, a kind of aluminium-alloy pipe docking calculation as claimed in claim 8 is characterized in that described projection aluminium ring can be that a side aluminium-alloy pipe becomes concavity and the socket of opposite side aluminium alloy to form with mechanical flange.
10, a kind of aluminium-alloy pipe docking calculation as claimed in claim 8 is characterized in that described projection aluminium ring length should be less than the electric arc width that AC arc welding produced.
11, a kind of aluminium-alloy pipe docking calculation as claimed in claim 7 is characterized in that described and the close-fitting object of aluminum pipe internal diameter is a copper tube.
12, a kind of aluminium-alloy pipe docking calculation as claimed in claim 11 is characterized in that described copper tube has the longitudinal joint of one 0.01 to 0.5 mm wide.
13, a kind of aluminium-alloy pipe docking calculation as claimed in claim 7 is characterized in that described big electric current is the 50-55 ampere.
14, a kind of aluminium-alloy pipe docking calculation as claimed in claim 7 is characterized in that described little electric current is the 28-32 ampere.
15, a kind of aluminium-alloy pipe docking calculation as claimed in claim 7 is characterized in that the time of described weldering one circle is 15 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100844656A CN100441355C (en) | 2004-11-23 | 2004-11-23 | Butt-joint special apparatus and method for aluminium alloy pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100844656A CN100441355C (en) | 2004-11-23 | 2004-11-23 | Butt-joint special apparatus and method for aluminium alloy pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1778510A true CN1778510A (en) | 2006-05-31 |
| CN100441355C CN100441355C (en) | 2008-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100844656A Expired - Fee Related CN100441355C (en) | 2004-11-23 | 2004-11-23 | Butt-joint special apparatus and method for aluminium alloy pipe |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363257A (en) * | 2011-06-27 | 2012-02-29 | 吴江市精工铝字制造厂 | A processing method of a three-dimensional aluminum alloy character |
| CN102615396A (en) * | 2012-02-16 | 2012-08-01 | 山东大学 | Filling wire inert gas protective welding method for magnesium alloy pipe and aluminum alloy pipe |
| CN102658399A (en) * | 2012-05-09 | 2012-09-12 | 贺伟 | Steel pipe cutting machine tool |
| CN105415695A (en) * | 2015-10-30 | 2016-03-23 | 四川高德特科技有限公司 | Continuous fiber-reinforced pipe butt joint method |
| CN108311774A (en) * | 2018-04-03 | 2018-07-24 | 南京知行管业有限公司 | A kind of weld device of anti-settling hose |
| CN108817772A (en) * | 2018-07-20 | 2018-11-16 | 芜湖新瑟安智能科技有限公司 | A kind of welder for the processing of red copper interface tube |
| CN110293282A (en) * | 2019-07-09 | 2019-10-01 | 中国航发哈尔滨东安发动机有限公司 | A kind of automatic argon arc girth welding method of pipeline |
| CN111375996A (en) * | 2020-03-30 | 2020-07-07 | 如皋市煜腾金属材料科技有限公司 | Stainless steel pipe welding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS635873A (en) * | 1986-06-25 | 1988-01-11 | Diesel Kiki Co Ltd | Welding method for pipe and pipe |
| JP2753734B2 (en) * | 1989-06-28 | 1998-05-20 | 昭和アルミニウム株式会社 | How to connect tubing in a refrigeration cycle |
| CN2133739Y (en) * | 1991-10-30 | 1993-05-19 | 李绍荣 | Welded pipe joint |
| JP2818933B2 (en) * | 1996-10-14 | 1998-10-30 | 大阪装置建設株式会社 | Insert fitting for pipe welding and pipe welding structure using the same |
| JP3703998B2 (en) * | 1999-07-19 | 2005-10-05 | 昭和電工株式会社 | Pipe welded structure |
| JP2001058282A (en) * | 1999-08-24 | 2001-03-06 | Olympus Optical Co Ltd | Manufacturing device for forceps device for endoscope |
| JP2004268053A (en) * | 2003-03-05 | 2004-09-30 | Babcock Hitachi Kk | Device for manufacturing long-sized pipe |
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- 2004-11-23 CN CNB2004100844656A patent/CN100441355C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363257A (en) * | 2011-06-27 | 2012-02-29 | 吴江市精工铝字制造厂 | A processing method of a three-dimensional aluminum alloy character |
| CN102615396A (en) * | 2012-02-16 | 2012-08-01 | 山东大学 | Filling wire inert gas protective welding method for magnesium alloy pipe and aluminum alloy pipe |
| CN102615396B (en) * | 2012-02-16 | 2014-06-18 | 山东大学 | Filling wire inert gas protective welding method for magnesium alloy pipe and aluminum alloy pipe |
| CN102658399A (en) * | 2012-05-09 | 2012-09-12 | 贺伟 | Steel pipe cutting machine tool |
| CN105415695A (en) * | 2015-10-30 | 2016-03-23 | 四川高德特科技有限公司 | Continuous fiber-reinforced pipe butt joint method |
| CN105415695B (en) * | 2015-10-30 | 2018-02-13 | 四川高德特科技有限公司 | Continuity fiber reinforced pipe docking calculation |
| CN108311774A (en) * | 2018-04-03 | 2018-07-24 | 南京知行管业有限公司 | A kind of weld device of anti-settling hose |
| CN108817772A (en) * | 2018-07-20 | 2018-11-16 | 芜湖新瑟安智能科技有限公司 | A kind of welder for the processing of red copper interface tube |
| CN110293282A (en) * | 2019-07-09 | 2019-10-01 | 中国航发哈尔滨东安发动机有限公司 | A kind of automatic argon arc girth welding method of pipeline |
| CN111375996A (en) * | 2020-03-30 | 2020-07-07 | 如皋市煜腾金属材料科技有限公司 | Stainless steel pipe welding method |
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| CN100441355C (en) | 2008-12-10 |
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