CN101380691B - O shaped gas shield resistance butt welding device and method - Google Patents
O shaped gas shield resistance butt welding device and method Download PDFInfo
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- CN101380691B CN101380691B CN2008102250044A CN200810225004A CN101380691B CN 101380691 B CN101380691 B CN 101380691B CN 2008102250044 A CN2008102250044 A CN 2008102250044A CN 200810225004 A CN200810225004 A CN 200810225004A CN 101380691 B CN101380691 B CN 101380691B
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Abstract
The invention discloses an O-shaped ring gas protection contact butt-welding device and a method thereof. In the method, a workpiece is heated to a plastic deformation stage by the heating of a resistance; the joint position of the workpiece is fused and deformed by upset pressurizing. A welding clamp provides possibility for mounting the workpiece with no misalignment by rotating a left adjusting bolt (7) and a micrometer head (10). A steel wire (17) is adopted to be connected with a pull pin (16) of a handle for hanging a weight (20) by rounding a crown block (18); the gravity is used as the applying mode for upset pressure. A control method by using a laser sensor (13) for feeding back the length of the workpiece extending out of an electrode (12) as the welding squeezing amount is used. The technique is suitable for the welding of a hollow O-shaped ring of stainless steel, a solid O-shaped ring, a hollow O-shaped ring of aluminum alloy and a solid O-shaped ring, the tubular diameters of which are between 2 and 5mm. The welding quality is better than arc welding and the technique is stable, thus greatly improving the qualified rate of the product.
Description
Technical field
The present invention is a kind of O type ring gas shield contact opposite soldering device and method, and this device can be used to weld tubule footpath thin-wall stainless steel cavity ring, solid torus and aluminium alloy cavity ring, solid torus etc., belongs to welding technology field.
Background technology
For thin-walled small-bore (the stainless steel welding method of φ 3 * 0.5mm), the arc-welding mode is generally adopted in the home and abroad, with micro-plasma arc welding the most typical case.The major defect of arc-welding is difficult to control for heat in whole fusion process is constant.The technological parameter of welding process will highly keep constant, is mainly reflected in the aspect such as even of the long and speed of welding of the perseverance of constant, electric arc of electric current.If the micro-plasma arc welding of adopting energy height to concentrate connects, also can cause incomplete fusion and defective such as lack of penetration for small teeter.And being easy to generate double arcing in welding process causes welding to be interrupted.On welding effect insufficient strength appears easily or the postwelding through hole is blocked.
Summary of the invention
The present invention proposes a kind of O type ring gas shield contact opposite soldering device and method, the present invention can control welding process by amount of compression, forms closed-loop control.
To achieve these goals, the present invention has taked following technical scheme.This device comprises the base plate 11 made by insulating materials, welding centering body, upset presser unit, workpiece be installed unit and welding amount of compression control module;
Described welding centering body comprises left-half slide mechanism and right half part slide mechanism two parts:
Described left-half slide mechanism comprises that the cross section that is fixed on the base plate is trapezoidal left base, is fixed on guide rail on the left base inclined-plane, is installed in left slider, a left side on the line slideway and adjusts screw, a left side to adjust screw bearing, right baffle-plate and cross section be trapezoidal left skateboard, fixedly connected with left slider in the inclined-plane of left skateboard, right baffle-plate is fixedlyed connected with left skateboard, and a left side is adjusted screw and passed a left side that is fixed on the left base and adjust the screw bearing and be connected with right baffle-plate with the form of screw thread.
Described right half part slide mechanism comprises the right base that is fixed on the base plate, be arranged on the right slide rail of right base upper surface, be installed in the right slide block on the right slide rail, the right slide plate that lower surface is fixedlyed connected with right slide block, the right spanner of the L type of fixedlying connected with right slide plate right side, be fixed on two of right slide plate upper surface left side with the perpendicular slide rail of right slide rail, be installed in the slide block on the slide rail, the right side that is fixed on the slide block clamps backing plate, be arranged on the slide rail both sides and be fixed on the first micrometer head bearing and the second micrometer head bearing on the right slide plate, first micrometer head that passes the first micrometer head bearing and be threaded with the first micrometer head bearing, second micrometer head that passes the second micrometer head bearing and be threaded with the second micrometer head bearing, being fixed on the right slide block left and right sides is used for right slide block is carried out spacing left limit piece and right limit piece.
Described upset presser unit comprises steel wire rope, hang counterweight and be fixed on fixed pulley on the base plate, the right spanner of L type in one end of steel wire rope and the described right half part slide mechanism is fixedlyed connected, and the other end is walked around the through hole that passes again on the base plate behind the fixed pulley and fixedlyed connected with the suspension counterweight.
The described workpiece unit that is installed comprises the left binding clasp that is connected on the left skateboard and is connected the right right binding clasp that clamps on the backing plate.Described left binding clasp comprises the binding clasp seat of fixedlying connected with left skateboard; the lower electrode holder of fixedlying connected with the binding clasp seat; positive stop and backstop; and the top electrode seat that is arranged between positive stop and the backstop and can slides with respect to positive stop and backstop; be fixed on the bottom electrode in the lower electrode holder; be fixed on the top electrode in the top electrode seat; the upper wiring board that is connected with the top electrode seat; the following terminal plate of fixedlying connected with lower electrode holder; lower electrode holder is provided with the through hole that is used to feed protective gas, and the lower surface of top electrode and the upper surface of bottom electrode are provided with the electrode groove that is used to block workpiece.Right binding clasp is identical with left binding clasp structure.
Described welding amount of compression control module comprises laser sensor that is fixed on the right binding clasp and the laser pick-off plate that is fixed on the left binding clasp.
One end of the right spanner of described L type is fixed on the right slide plate by pin, the other end is provided with and draws pin, one end of steel wire rope is fixedlyed connected with drawing pin, and the corner position of the right spanner of L type is connected with wooden floor by shipping and reselling on another market, and the distance of the flex point of broaching equates with the distance of pin to flex point.
Described workpiece is installed to form between top electrode seat in the unit and positive stop and the backstop and is slidingly connected, be specially: an end of mandrel passes the top electrode seat and is connected on the binding clasp seat by bearing, be connected with spring between mandrel and the top electrode seat, the other end of mandrel is connected with cam, cam is fixedlyed connected with mandrel by jump ring, the outer surface of cam contacts with the appearance surface of top electrode seat, also is connected with handle on the cam.
The present invention also comprises and being fixed on the base plate and at left binding clasp with rightly step up between the device, be mutually back camera and following camera that 90 ° of angles are arranged.
Be provided with in the both sides of bottom electrode and be installed in a left side and step up pea lamp on the device.
The welding method of O type ring gas shield contact opposite soldering device, this method may further comprise the steps:
1) right spanner is pushed open backward, then clearance gauge is close to bottom electrode in the left binding clasp, unclamp right spanner, clearance gauge is clamped between the bottom electrode in left binding clasp and the right binding clasp;
2) pull open handle on the binding clasp of the left and right sides, workpiece is placed the electrode groove, again the handle on the binding clasp of the left and right sides is depressed, workpiece is clamped by left and right sides binding clasp, take out clearance gauge then;
3) pass through the position that back camera and following camera are observed workpiece, by adjusting the no misalignment that the left side adjustment screw and first micrometer head and second micrometer head guarantee gentle vertical two directions of workpiece water;
4) terminal plate on the binding clasp of the left and right sides is connected with the source of welding current respectively;
5) feed protective gas by the gas operated device in the through hole in the left binding clasp seat;
6) laser sensor is constantly gathered the distance between itself and the dash receiver, then stops welding when this distance reaches the amount of compression of setting.
7) by preheating repeatedly the workpiece joints position evenly is heated to the plastic deformation stage by making the crimp of workpiece joints position under the effect that once is welded on upsetting force in the welding process, reaches the effect of welding.
Beneficial effect of the present invention:
1) this device can significantly reduce the vertical direction of workpiece, the misalignment of fore-and-aft direction and guarantee workpiece extension elongation accurately, promptly in position that three directions of X, Y, the Z of workpiece are guaranteed workpiece;
2) this device draws steel wire rope on the pin to walk around the fixed pulley lower end by handle and hangs counterweight, with gravity as upsetting force, thereby guarantee the stable of welding upsetting force;
3) the present invention is by repeatedly preheating and welding have guaranteed the stable of hot input quantity.Find to use this technology weld strength higher by check, the weld seam through hole is difficult for blocked.Need not to control stable the stable of speed of welding that reach of electric arc in the arc welding process.Product percent of pass improves greatly.
4) the present invention controls the amount of compression size that guarantees conduction time in the welding process simultaneously by laser sensor collection welding amount of compression; This control scheme has realized the closed-loop feed-back type control method, has improved product percent of pass, is better than traditional open loop dependence and sets the welding of carrying out conduction time.
Description of drawings
Fig. 1 is the amount of compression control flow chart;
Fig. 2 is the upsetting force control flow chart;
Fig. 3 is the welding method schematic diagram;
Fig. 4 is the anchor clamps overall perspective view;
Fig. 5 is that screw and left bottom plate stereogram are adjusted in anchor clamps left-half guide rail, a left side;
Fig. 6 is sectional fixture right half part guide rail and right base stereogram;
Fig. 7 installs right slide plate, handle and the stereogram of shipping and reselling on another market;
Fig. 8 installs steel wire rope, counterweight, fixed pulley stereogram;
Fig. 9 installs MGW15C guide rail and the right binding clasp backing plate of slide block stereogram;
Figure 10 is that two micrometer heads assembled the back stereogram before and after right half part was installed;
Figure 11 is a stereogram after installation right half part and left-half guide rail and the slide plate installation;
Figure 12 is left binding clasp internal mandrel stereogram;
Figure 13 is that left binding clasp loosens and clamps stereogram;
Figure 14 is the electrode installation diagram, and electrode jackscrew stereogram;
Figure 15 is after left binding clasp is installed wireway, wireway work and off working state stereogram;
Figure 16 is that left binding clasp is installed the pea lamp stereogram
Figure 17 left-half overall perspective view;
Figure 18 is left-half and right half part overall perspective view;
Figure 19 is a stereogram behind installation laser sensor and the dash receiver;
Figure 20 is a stereogram behind the camera of installation back;
Figure 21 is a stereogram behind the following camera of installation;
Figure 22 is a stereogram behind whole anchor clamps card engaging workpiece and the clearance gauge;
Figure 23 is a local amplification stereogram behind installation clearance gauge and the workpiece.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The unitary construction of present embodiment is divided into left and right sides two parts, and welding point is placed between the two halves electrode of the left and right sides, with the base plate of wooden plate as left and right sides two halves, guarantees left-half and right half part insulation with this.
As shown in Figure 4, present embodiment specifically comprises welding centering body, upset presser unit, workpiece be installed unit and welding amount of compression control module four parts.
Welding centering comprises left-half slide mechanism and right half part slide mechanism two parts, its concrete structure such as Fig. 5～and shown in Figure 11, below it is elaborated:
Left-half slide mechanism such as Fig. 4, shown in Figure 5, the left-half slide mechanism is installed in the left side top of wooden floor, comprises that the cross section that is fixed on the base plate 11 is trapezoidal left base 75, is fixed on guide rail 74 on left base 75 inclined-planes, is installed in left slider 73, a left side on the line slideway 74 and adjusts screw 70, a left side to adjust screw bearing 72, right baffle-plate 71 and cross section be trapezoidal left skateboard 21.Fixedly connected with left slider 73 in the inclined-plane of left skateboard 21, right baffle-plate 71 is fixedlyed connected with left skateboard 21, a left side is adjusted screw 70 and is passed a left side that is fixed on the left base 75 and adjust screw bearing 72 and is connected with right baffle-plate 71 with the form of screw thread, can make the part of left plate washer 71 drive left skateboards more than 21 along guide rail 74 direction move left and right by rotating left side adjustment screw 70.
This kind mounting means can be adjusted the adjustment that screw is realized left-half and right half part difference in height by a rotation left side, to guarantee the possibility of workpiece at the no misalignment of vertical direction, and can realize the distance adjustment of left and right sides two halves distance, to adjust the length that workpiece stretches out electrode.
The right half part slide mechanism is installed in the top, right side of wooden floor, its structure the right slide rail that comprise the right base 82 that is fixed on the base plate 11, is arranged on right base 82 upper surfaces (right slide rail comprises two first guide rails 81 that are parallel to each other and second guide rail 22 that is fixed on the right base plate 82), is installed in the right slide block 77 on the right slide rail, right slide plate 87 and left limit piece 76 and the right limit piece 78 that lower surface is fixedlyed connected with right slide block 77 as shown in Figure 6.Right base 82 is installed in the top, right side of wooden floor, and right slide plate 87 is connected with four right slide blocks 77 of right half part, and right slide block 77 is by the position of the right slide plate 87 of bolting.The left side of right slide plate is the slide rail mounting groove that is used to install slide rail 9, and the right side is a right spanner 85 that connects by pin 86, and right spanner 85 is L shaped, as Fig. 7～shown in Figure 11, promotes right spanner 85 by front and back right half part is moved along the guide rail direction.Be equipped with at the flex point place of right spanner 85 ship and resell on another market 83 with the seat 23 of shipping and reselling on another market, the seat 23 of shipping and reselling on another market is fixed on above the wooden floor, ships and resell on another market to be fixed on the seat 23 of shipping and reselling on another market.Above L shaped right spanner 85, also be fixed with and draw pin 16, wherein draw pin 16 to equate with the distance of pin 86 to flex point with distance between the flex point.Steel wire rope 88 is enclosed within and draws in the cotter way, and steel wire rope 88 passes the through hole of wooden floor by the fixed pulley 18 that is fixed on the wooden floor, and the steel wire rope lower end hangs counterweight 20 by pulling force sensor.This kind mounting means because of broach 84 with flex point between distance equate with the distance of pin to flex point, so under the situation of negligible friction, realization equals lineoutofservice signal pull with counterweight weight and just equals upsetting force in the welding process, promptly in the apply mode of Weight gravity as the welding upsetting force.
As shown in Figure 6, left limit piece 76 is fixed on the left side of right base plate 82, and right limit piece 78 is fixed on the right side of right base plate 82, by about two limited blocks can prevent that limited slip block 77 skids off right slide rail.
Guiding mechanism such as Fig. 7 before and after the right half part～shown in Figure 10 comprise the perpendicular slide rail 9 of two of being fixed on right slide plate 87 upper surfaces left side and right slide rail, are installed in slide block 24 on the slide rail 9, are fixed on right side clamping backing plate 37 on the slide block 24, are arranged on slide rail 9 both sides and are fixed on the first micrometer head bearing 94 and the second micrometer head bearing 96 on the right slide plate 87.The front and back guiding mechanism withstands on realization on the right binding clasp backing plate 37 after passing the first micrometer head bearing 94 and the second micrometer head bearing 96 respectively by front and back first micrometer head 93 and second micrometer head 95.In the micrometer head bearing screw thread is arranged, rotate first micrometer head 93 and second micrometer head 95 the right backing plate 37 that clamps is moved along slide plate 9 directions together with slide block 24.
This kind mounting means can realize that right binding clasp can move forward and backward along the slide plate direction, provides workpiece not have the possibility of misalignment in the horizontal direction.
By above structure, the misalignment of vertical direction of extension elongation, workpiece of workpiece and the misalignment of workpiece left and right directions all can strict be controlled, reduced the waste product that produces because of the workpiece alignment error in the welding process greatly.
The workpiece unit that is installed comprises the left binding clasp that is connected on the left skateboard 21 2 and is connected the right right binding clasp 14 that clamps on the backing plate 37 that left binding clasp 2 is identical with the structure of right binding clasp 14.
Left side binding clasp 2 is fixed on the left skateboard right side, its concrete structure is shown in Figure 12～17, comprise the binding clasp seat 50 of fixedlying connected with left skateboard 21, the lower electrode holder 102 of fixedlying connected with binding clasp seat 50, positive stop 97 and backstop 98, and the top electrode seat 101 that is arranged between positive stop 97 and the backstop 98 and can slides with respect to positive stop 97 and backstop 98, be fixed on the bottom electrode 112 in the lower electrode holder 102, be fixed on the top electrode 111 in the top electrode seat 101, the upper wiring board 103 that is connected with top electrode seat 101, the following terminal plate 104 of fixedlying connected with lower electrode holder 102.
Workpiece is installed to form between top electrode seat 101 in the unit and positive stop 97 and the backstop 98 and is slidingly connected, be specially: an end of mandrel 99 passes top electrode seat 101 and is connected on the binding clasp seat 50 by bearing, be connected with spring 100 between mandrel 99 and the top electrode seat 101, the other end of mandrel 99 is connected with cam 106, cam 106 is fixedlyed connected with mandrel 99 by jump ring, the outer surface of cam 106 contacts with top electrode seat 101, also is connected with handle 105 on the cam 106.
This kind mounting means guarantees that the top electrode seat can move up and down in binding clasp inside, is used for clamping work pieces, can allow cam lock (because of the spring of mandrel inside discharges fully in this position) naturally when holding 145 ° with horizontal plane by calculating.Can be connected with the source of welding current by terminal plate.Because electrode is only fixed by jackscrew, so convenient disassembly, is easy to change electrode.
In the present embodiment, electrode fixedly be that jackscrew by upper/lower electrode seat side holds out against, also be provided with electrode groove 25 at the lower surface of top electrode 111 and the upper surface of bottom electrode 112, be used for blocking workpiece.
Also have the first protection gas interface 51 and the second protection gas interface 52 on the binding clasp of a left side, the protection tracheae is that welding provides protection gas by first through hole 107 and second through hole 108 of binding clasp base in the mode that can rotate up and down.Protection gas enters by the first protection gas inlet, the 51 and second protection gas inlet 52; distance between the first protection gas jets 113 and the second protection gas jets 114 and the workpiece and angle can be adjusted shown in Figure 15 (a) Figure 15 (b) by rotating this spanner as shown in figure 19 in the first protection gas spanner 34 and the second protection gas spanner, 35 positions.This kind mounting means has been determined the passage of protection gas, and compact conformation needn't add the protection device of air in addition, and can adjust the protection air-blowing to the position of workpiece by protection gas handle, has solved the difficult problem that can't arrive the workpiece joints place because of the very short protection gas of workpiece extension elongation.Is in order to prevent because of the overheated wireway that damages of workpiece in the welding process and select steel pipe as wireway.
As Figure 20, Figure 21 is back camera 122 and following camera 125 installations diagram, and wherein back camera 122 in being installed in back camera mount pad 123, is used to observe the horizontal unfitness of butt joint of welding work pieces with horizontal dead astern.Following camera 125 with under the vertical workpiece in being installed in down camera mount pad 124, be used to observe welding work pieces vertical direction unfitness of butt joint.Two cameras are mutually 90 ° of angles the workpiece joints position are observed.
As shown in figure 16, binding clasp seat 50 both sides, a left side are equipped with the first pea lamp mount pad 115 and the second pea lamp mount pad 116, pea lamp 117 then is installed among the first pea lamp mount pad 115 and the second pea lamp mount pad 116, is used to camera that light source is provided.The angle that is installed of pea lamp 117 can suitably be adjusted.
Figure 19 is a laser sensor installation site schematic diagram, be fixed at the rear of right binding clasp on the right binding clasp for laser sensor 118, at the rear and the laser sensor correspondence position installation laser pick-off plate 119 of left binding clasp.In welding process, because crimp, the distance between laser sensor 118 and the laser pick-off plate 119 also can correspondingly change.When foreshortening to predetermined value, this distance then can close the source of welding current, thus control welding backlog.In the present embodiment, laser sensor 118 and laser pick-off plate 119 are fixed on the side of top electrode seat.
The welding method of O type ring gas shield contact opposite soldering device, this method may further comprise the steps:
1) right spanner 85 is pushed open backward, then clearance gauge 121 is close to bottom electrode 112 in the left binding clasp, unclamp right spanner 85, clearance gauge 121 is clamped between the bottom electrode in left binding clasp 2 and the right binding clasp 14;
2) pull open handle on the binding clasp of the left and right sides, workpiece 120 is placed electrode groove 25, again the handle on the binding clasp of the left and right sides is depressed, workpiece 120 is clamped by left and right sides binding clasp, take out clearance gauge 121 then, this operation has guaranteed that length that workpiece stretches out electrode is the width of clearance gauge.
3) a rotation left side is adjusted screw 70 and is observed vertical video observer and stop to adjust left side adjustment screw 70 when having found workpiece no misalignment entirely on the center on this video observer, rotate first micrometer head 93 and second micrometer head 95 of right binding clasp both sides, and observation water is looked squarely observer frequently stop the rotation first micrometer head 93 and second micrometer head 95 of right binding clasp both sides when having found workpiece no misalignment entirely on the center on this video observer.This operation has guaranteed the no misalignment assembling of workpiece.
4) terminal plate on the binding clasp of the left and right sides is connected with the source of welding current respectively;
5) feed protective gas by the gas operated device in the through hole in the left binding clasp seat, rotate the first protection gas handle 51 and the second protection gas handle 52 and make the distance and the angle position of the first protection gas jets 113 and the second protection gas jets 114 and workpiece 120 suitable.
6) laser sensor is constantly gathered the distance between itself and the dash receiver, then stops welding when this distance reaches the amount of compression of setting.
7) by preheating repeatedly the workpiece joints position evenly is heated to the plastic deformation stage by making the crimp of workpiece joints position under the effect that once is welded on upsetting force in the welding process, reaches the effect of welding.
Figure 23 is the workpiece figure that is installed.Clearance gauge 121 is at first filled between left-half and right half part two bottom electrodes, promoted right spanner and clamp clearance gauge, then among slot electrode 25 that workpiece 120 is packed into.This moment, workpiece stretched out the width of filling in the bottom electrode part that the length of electrode is exactly this clearance gauge.
To be the amount of compression control flow chart gather distance between laser sensor and the dash receiver by laser sensor to Fig. 1, has only this distance and workpiece in the welding conditions to stretch out electrode length and just allow to weld startup when consistent; Laser sensor can pass to the AD module with the distance between this laser sensor and the dash receiver this moment when workpiece generation crimp in welding process, through passing to the PLC control module after the AD conversion, when this distance reaches setting numerical value, PLC can control the source of welding current and stop conduction time, thereby make workpiece no longer include the input of heat, and then the amount of compression of workpiece also just rest on the position of setting.
To be the upsetting force control flow chart measure pressure between left-half and the right half part by pressure sensor to Fig. 2, and this pressure passes to the PLC control module by the AD module, just allows welding to start when this pressure satisfies upsetting force in the welding conditions.Otherwise do not allow welding to start.
Fig. 3 is the welding procedure principle schematic, and technological parameter comprises the preheating number of times, preheating time, preheat curent, weld interval welding current, upsetting force, workpiece stretch out the length of electrode, and the amount of compression size.By selecting preheating number of times and preheating time and electric current the temperature of variety classes different size can be heated to the plastic deformation stage, enter after the welding process that crimp can take place workpiece under suitable upsetting force effect, can control what of welding deformation by amount of compression control method, thereby reach the effect of welding.The i.e. welding requirements of the workpiece that how much satisfies the different size kind by controlling hot input quantity.
The innovation of this invention is following four aspects:
One, connects the new welding method of proposition-gas shield contact butt welding for this type of O type boxing.But be somebody's turn to do welding aluminum alloy, the solid and hollow O type ring of stainless steel-like by changing preheating number of times and welding condition.The weld strength height can guarantee the postwelding through hole, and welding stable prod qualification rate height.The heat input is stable, need not the control of the desired arc length of arc-welding, arc voltage and speed of welding.Can weld any caliber by these anchor clamps of replacing electrode is 2～5mm girth O type ring arbitrarily.
Gas shield contact flat welding process welds this type of O type ring, to the plastic deformation stage, makes workpiece in plastic deformation stage welding deformation take place by the upset pressurization by the resistance heat heated parts.Eliminate the contact resistance of workpiece and joint area is contacted fully by preheating repeatedly, can make workpiece according to the set goal generation deformation by welding once.
Two, be the new new welder of welding procedure design, this device provides protection gas inlet, the outlet of protection gas.The design of protection air pipe can be as required before welding starts two protections of rotation gas handrails makes protection gas jets alignment pieces, and welding finish after once more rotation protection gas handrail will protect the tracheae cycle just to make the position, with the conveniently installation of workpiece next time.Adjust the difference in height that screw can be adjusted the workpiece joints place by rotating a left side, to guarantee no misalignment in vertical direction.By former and later two micrometer heads of rotation right half part, can adjust the lateral deviation at workpiece joints place, to guarantee no misalignment in the horizontal direction.And the camera that this device is equipped with video to amplify is by partly amplifying workpiece joints 15 times and clearly observe the misalignment situation.Come card engaging workpiece by adjusting right half part spanner position, can adjust the length that electrode is stretched out at the workpiece two ends, can arbitrarily change according to welding procedure with the extension elongation that guarantees the workpiece two ends.The present invention puts into clearance gauge between the bottom electrode of left and right sides two halves, guaranteed the accurate of extension elongation on the one hand, on the other hand, clearance gauge is lucite and all is carved with center line, can guarantee that by the observation of camera down the workpiece two ends stretch out the length unanimity of electrode (arrive respectively the center line of clearance gauge till).Thereby further guaranteed the accurate of extension elongation.
By a left side adjust screw adjust workpiece joints place vertical direction to moderate, adjust the workpiece joints places laterally to moderate by two micrometer heads, cooperate clearance gauge to adjust the length that workpiece two end connectors stretch out electrode by right spanner.Be that initial point X, Y, three directions of Z have realized installing accurately with the workpiece promptly.Reduced greatly because of misalignment, the two ends extension elongation is inconsistent or stretch out total length and be not inconsistent the waste product that produces with welding conditions.
Three, utilize laser sensor (present embodiment adopt for LG1OIA65PI type laser sensor) to measure the Laser emission position and import the AD module of PLC (the three bell FX2n series that present embodiment adopts) into the form of voltage to the distance of dash receiver, through AD change and computing after be transformed to the length that workpiece stretches out electrode.
Distortion in the welding process (normally shortening radially and horizontal broadening are backlog) is to guarantee one of important parameter of welding quality.Import the PLC control system into by the measurement of laser sensor the source of welding current is being controlled, form closed loop feedback system.When workpiece begins to be out of shape when welding process begins, the radial distance of workpiece can shorten, laser sensor is by the distance between continuous collection dash receiver this moment and the Laser emission position, after in case this distance reaches predetermined backlog, can turn-off the source of welding current rapidly, also just close the input source of heat, thereby controlled the backlog in the welding process.
Rely on the measurement of laser sensor in addition, this numerical value is watched with the handled easily personnel that show of digitized forms intuitively, can also control on the other hand and whether allow welding to start.Having only when extension elongation meets setting numerical value just allows welding to start.Otherwise welding can't start.Prevented the waste product that the maloperation because of operating personnel causes like this.
Four, design mechanically applies upsetting force in right half part spanner position by the mode that hangs counterweight under the fixed pulley.Because of amount of compression generally all very little (＜1mm) draw pin distance to equate to shipping and reselling on another market with shipping and reselling on another market at pin, and the weight of angle pull of steel wire counterweight when being 90 ° just equals the upsetting force in the welding process.Below steel wire rope, hang and draw counterweight, read counterweight weight and control welding process simultaneously with pressure sensor.
Show by experiment in the apply mode of gravity, can avoid guaranteeing in welding process because of the unstable waste product that causes of upsetting force as upsetting force.
Read the weight of counterweight by pulling force sensor, can make operating personnel see current upsetting force size on the one hand in digitized mode, the weight that reads of this pulling force sensor is passed to the AD module of PLC with the form of voltage on the other hand, is comparing with the upsetting force size of setting through calculating the back.Have only that upsetting force set in this upsetting force and the welding conditions is consistent could to allow welding.Effectively prevented to change the maloperation that counterweight causes because of operating personnel forget.
Claims (6)
1.O type ring gas shield contact opposite soldering device is characterized in that: comprise base plate (11), welding centering body, upset presser unit, the workpiece made by insulating materials be installed unit and welding amount of compression control module;
Described welding centering body comprises left-half slide mechanism and right half part slide mechanism two parts:
Described left-half slide mechanism comprises that the cross section that is fixed on the base plate (11) is trapezoidal left base (75), be fixed on the guide rail (74) on left base (75) inclined-plane, be installed in the left slider (73) on the line slideway (74), screw (70) is adjusted on a left side, screw bearing (72) is adjusted on a left side, right baffle-plate (71) and cross section are trapezoidal left skateboard (21), fixedly connected with left slider (73) in the inclined-plane of left skateboard (21), right baffle-plate (71) is fixedlyed connected with left skateboard (21), and a left side is adjusted screw (70) and passed a left side that is fixed on the left base (75) and adjust screw bearing (72) and be connected with right baffle-plate (71) with the form of screw thread;
Described right half part slide mechanism comprises the right base (82) that is fixed on the base plate (11), be arranged on the first right slide rail (81) and the second right slide rail (22) of right base (82) upper surface, be installed in the right slide block (77) on the right slide rail, the right slide plate (87) that lower surface is fixedlyed connected with right slide block (77), the right spanner (85) of the L type of fixedlying connected with right slide plate (87) right side, be fixed on two of right slide plate (87) upper surface left side with the perpendicular guide rail (9) of right slide rail, be installed in the slide block (24) on the guide rail (9), the right side that is fixed on the slide block (24) clamps backing plate (37), be arranged on guide rail (9) both sides and be fixed on the first micrometer head bearing (94) and the second micrometer head bearing (96) on the right slide plate (87), first micrometer head (93) that passes the first micrometer head bearing (94) and be threaded with the first micrometer head bearing (94), second micrometer head (95) that passes the second micrometer head bearing (96) and be threaded with the second micrometer head bearing (96), being fixed on right slide block (77) left and right sides is used for right slide block (77) is carried out spacing left limit piece (76) and right limit piece (78);
Described upset presser unit comprises steel wire rope (88), hang counterweight (20) and be fixed on fixed pulley (18) on the base plate (11), the right spanner of L type in one end of steel wire rope (88) and the described right half part slide mechanism (85) is fixedlyed connected, and the other end is walked around the through hole (19) that passes again on the base plate (11) behind the fixed pulley (18) and fixedlyed connected with suspension counterweight (20);
The described workpiece unit that is installed comprises the left binding clasp (2) that is connected on the left skateboard (21) and is connected the right right binding clasp (14) that clamps on the backing plate (37); Described left binding clasp (2) comprises the binding clasp seat (50) of fixedlying connected with left skateboard (21), the lower electrode holder (102) of fixedlying connected with binding clasp seat (50), positive stop (97) and backstop (98), and be arranged between positive stop (97) and the backstop (98) and can be with respect to the top electrode seat (101) of positive stop (97) and backstop (98) slip, be fixed on the bottom electrode (112) in the lower electrode holder (102), be fixed on the top electrode (111) in the top electrode seat (101), the upper wiring board (103) that is connected with top electrode seat (101), the following terminal plate (104) of fixedlying connected with lower electrode holder (102), lower electrode holder (102) is provided with the through hole that is used to feed protective gas, and the upper surface of the lower surface of top electrode (111) and bottom electrode (112) is provided with the electrode groove (25) that is used to block workpiece; Right binding clasp (14) is identical with left binding clasp (2) structure;
Described welding amount of compression control module comprises the laser sensor (13) that is fixed on the right binding clasp (14) and is fixed on laser pick-off plate (1) on the left binding clasp (2).
2. O type ring gas shield contact opposite soldering device according to claim 1; it is characterized in that: an end of the right spanner of described L type (85) is fixed on the right slide plate (87) by pin (86); the other end is provided with and draws pin (16); one end of steel wire rope (88) is fixedlyed connected with drawing pin (16); the corner position of the right spanner of L type (85) is connected with wooden floor (11) by ship and resell on another market (83), draws pin (16) to equate with the distance of pin (86) to flex point to the distance of flex point.
3. O type ring gas shield contact opposite soldering device according to claim 1; it is characterized in that: described workpiece is installed to form between top electrode seat (101) in the unit and positive stop (97) and the backstop (98) and is slidingly connected; be specially: an end of mandrel (99) passes top electrode seat (101) and is connected on the binding clasp seat (50) by bearing; be connected with spring (100) between mandrel (99) and the top electrode seat (101); the other end of mandrel (99) is connected with cam (106); cam (106) is fixedlyed connected with mandrel (99) by jump ring; the outer surface of cam (106) contacts with top electrode seat (101), also is connected with handle (105) on the cam (106).
4. O type ring gas shield according to claim 3 contact opposite soldering device is characterized in that: comprise that also being fixed on base plate (11) goes up and be positioned between left binding clasp (2) and the right binding clasp (14), be mutually back camera (122) and following camera (125) that 90 ° of angles are arranged.
5. O type ring gas shield contact opposite soldering device according to claim 1 is characterized in that: be provided with the pea lamp (117) that is installed on the left binding clasp (2) in the both sides of bottom electrode (112).
6. use the welding method of the described O type of claim 4 ring gas shield contact opposite soldering device, it is characterized in that this method may further comprise the steps:
1) right spanner (85) is pushed open backward, then clearance gauge (121) is close to bottom electrode (112) in the left binding clasp, unclamp right spanner (85), clearance gauge (121) is clamped between the bottom electrode in left binding clasp (2) and the right binding clasp (14);
2) pull open handle on the binding clasp of the left and right sides, workpiece (120) is placed electrode groove (25), again the handle on the binding clasp of the left and right sides is depressed, workpiece (120) is clamped by left and right sides binding clasp, take out clearance gauge (121) then;
3) pass through the position that back camera (122) and following camera (125) are observed workpiece (120), by adjusting the no misalignment that left side adjustment screw (70) and first micrometer head (93) and second micrometer head (95) guarantee gentle vertical two directions of workpiece water;
4) terminal plate on the binding clasp of the left and right sides is connected with the source of welding current respectively;
5) feed protective gas by the gas operated device in the through hole in the left binding clasp seat;
6) laser sensor is constantly gathered the distance between itself and the dash receiver, then stops welding when this distance reaches the amount of compression of setting;
7) by preheating repeatedly the workpiece joints position evenly is heated to the plastic deformation stage by making the crimp of workpiece joints position under the effect that once is welded on upsetting force in the welding process, reaches the effect of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102250044A CN101380691B (en) | 2008-10-24 | 2008-10-24 | O shaped gas shield resistance butt welding device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102250044A CN101380691B (en) | 2008-10-24 | 2008-10-24 | O shaped gas shield resistance butt welding device and method |
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| Publication Number | Publication Date |
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| CN101380691A CN101380691A (en) | 2009-03-11 |
| CN101380691B true CN101380691B (en) | 2010-08-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101972916B (en) * | 2010-09-29 | 2012-09-05 | 江苏华坤电气有限公司 | Machining method of electrode connector in reduction furnace |
| CN102139455A (en) * | 2011-05-03 | 2011-08-03 | 苏州工业园区高登威科技有限公司 | Intelligent workpiece seat |
| CN103244526A (en) * | 2012-02-03 | 2013-08-14 | 上海申辰线缆设备有限公司 | Hydraulic drive cold welding machine |
| CN104308402B (en) * | 2014-09-26 | 2017-07-28 | 上海函杰电气设备有限公司 | A kind of pendulum automatic tracking and back gas shielded torr cover |
| CN105737744B (en) * | 2016-05-10 | 2018-10-26 | 中石化石油机械股份有限公司沙市钢管分公司 | Weld amount of compression on-line measuring device and method |
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