CN102615385A - Power device for welding purpose and welder - Google Patents
Power device for welding purpose and welder Download PDFInfo
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- CN102615385A CN102615385A CN2012100195871A CN201210019587A CN102615385A CN 102615385 A CN102615385 A CN 102615385A CN 2012100195871 A CN2012100195871 A CN 2012100195871A CN 201210019587 A CN201210019587 A CN 201210019587A CN 102615385 A CN102615385 A CN 102615385A
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Abstract
A power device for welding purpose and a welder are provided. Whatever the setting is, the resistance value and the inductance value used for calculating the front-terminal voltage of an electrode can be easily measured. When the measuring mode is switched to measure the resistance value and the inductance value of the front terminal of the electrode (12) related to the calculation of the front-terminal voltage, through the combination of the prescribe operations of a welding-torch switch (41) in a welding torch (TH) fitted with an operating remote controller (42) of a welding-wire supplying device (13) and a micro switch (42c), original corresponding motions of the operated switches (41, 42c) are separately performed to switch to the measuring mode. In other words, by the welding torch near the electrode and the prescribed operation of the on/off status of the operating remote controller, the status of the front terminal portion of the electrode can be determined during the measurement, and meanwhile the measurement can be carried out easily. In addition, even under the setting condition where the power device (11) is at a great distance from the electrode, the measurement can also be easily performed.
Description
Technical field
The welding that the present invention relates to implement FEEDBACK CONTROL according to the calculating of terminal voltage before the electrode is with supply unit and possess the bonding machine of this welding with supply unit.
Background technology
Arc welding with supply unit for example shown in patent documentation 1; Be constituted as: through inverter circuit; To carry out the direct current after the rectification to interchange input electric power and be transformed to high-frequency alternating current from source power supply; Through rectification circuit and direct current reactor, will carry out the adjusted high-frequency alternating current of voltage by welding transformer and be transformed to the direct current output power that is suitable for arc welding.The output power that is generated by supply unit is fed into the electrode that is supported by welding torch, between electrode front end and welding object, produces electric arc thus, carries out the welding of welding object.
In addition; The detection of output current and output voltage is carried out in this welding with supply unit; Control device will be constantly detected output current and output voltage feed back to the PWM control of inverter circuit, and implement to make constantly output power to become the control of appropriate value, improve welding performance.
Patent documentation 1:JP spy opens flat 8-103868 communique
Yet; In order to produce suitable electric arc; The preferred output voltage that not only will in supply unit, detect is reflected to the controlling value of inverter circuit, also calculates the preceding terminal voltage of the electrode that correctly produces this electric arc, and terminal voltage before the electrode that calculates is reflected to controlling value.
Because the situation of separating between the welding torch that in fact welds (electrode) and the supply unit is more, the form that connects via power cable (power cable) between the two is general use form.Therefore, the cable length of power cable is different because of each user, so the resistance value of cable itself is different; And according to any intermediate position of cable; For example lay in several weeks as if unnecessary length is reeled, then according to the situation of laying point-blank or the difference of winding number, inductance value is also different.Therefore, for the resistance between the outside electrode of the supply unit of realizing the further raising of welding performance, can not ignore comprising power cable and the variation in voltage amount of inductance.
Therefore; Be reflected in the mode of controlling value of inverter circuit at the output voltage that will in supply unit, detect; Can produce following worry: the magnitude of voltage that deviates from terminal voltage before the real electrode is reflected to the controlling value of inverter circuit; This can hinder and produce suitable electric arc, hinders the further raising of welding performance.
Before measuring such electrode when the employed resistance value of calculating of terminal voltage and inductance value, require to carry out under the state of terminal shortcircuit before making electrode the operation that waits, so desired operation person is positioned near the electrode front end.On the other hand; When operation that only can be when the supply unit side set to be measured; Especially partly be set at not only in the horizontal direction with respect to electrode but also under the situation of the position that above-below direction also separates at supply unit, near the operator who is positioned at the electrode front end is difficult to carry out the operation of supply unit.
Summary of the invention
The present invention makes in order to solve above-mentioned problem; It is a kind of no matter situation is set how that its purpose is to provide, and the welding of mensuration of the employed resistance value of calculating and inductance value that can both easily carry out terminal voltage before the electrode is with supply unit and possess the bonding machine of this welding with supply unit.
In order to solve above-mentioned problem; Invention described in the technical scheme 1 is that supply unit is used in a kind of welding; It possess with direct current be transformed to high-frequency alternating current inverter circuit, carry out the alternating current after the conversion the voltage adjustment welding transformer and generate the DC converting mechanism of the direct current output power that is suitable for welding according to the secondary side alternating current of this welding transformer; It also possesses controlling organization; This controlling organization be based on the said output power that generated to the supply of electrode and welding object between be used in the mechanism that the electric arc of welding produces; And based on the preceding terminal voltage of calculating said electrode by detected output current of testing agency in this device and output voltage; Preceding terminal voltage based on calculating is controlled said inverter circuit; Wherein, Said welding has the mode determination of carrying out the processing that comprises resistance value calculation mechanism and inductance value calculation mechanism with supply unit; And possess front end voltage calculation mechanism, said resistance value calculation mechanism is made as short-circuit condition with said electrode and handles, the magnitude of voltage of the said output voltage when being made as the rated current value based on the said output current that will be produced by the action of said inverter circuit; Calculate the total resistance value on the path till the said electrode front end; Said inductance value calculation mechanism is made as short-circuit condition with said electrode and handles, and the current attenuation amount that begins when being set at the rated current value based on the said output current that will be produced by the action of said inverter circuit calculates the total inductance value on the path till the said electrode front end; Said front end voltage calculation mechanism is to by said total resistance value and the relevant voltage variety of said total inductance value on the magnitude of voltage correction of the detected said output voltage of said testing agency and the path till said electrode front end; Calculate said before terminal voltage, said welding also possesses switching mechanism with supply unit, the predetermined operation that this switching mechanism can carry out according at least one switch that utilizes in the various console switch; Switch said mode determination with the original respective action of operated switch, said various console switch are arranged at the welding torch of the support of carrying out said electrode and power supply respectively and are that the remote controller that is equipped with in the welding wire generator of giving of this electrode is carried out in consumption when welding under the situation of wire-electrode corresponding to said electrode differently.
In this invention; To measure with electrode before the mode determination of the relevant total resistance value till the electrode front end of the calculating of terminal voltage and total inductance value when switching; Through at least one switch in the various console switch of the remote controller setting of welding torch and welding wire generator is respectively carried out predetermined operation, thereby carry out switching dividually to mode determination with the original respective action of operated switch.Promptly; Through being employed in the switch that is used to carry out original other action that is equipped with in welding torch or the remote controller; Thereby need not be provided for the switch implementing to measure in addition; Near the predetermined operation of the switch through being positioned at these welding torches and the remote controller electrode, thus can when measuring, confirm easily to implement to measure in the state of electrode fore-end.Thus, though with the situation that is provided with of the such supply unit of the very big distance of electrode separation itself under, also can easily implement to measure.
Invention described in the technical scheme 2 be the welding described in the technical scheme 1 with supply unit in; Be equipped with the welding torch switch at said welding torch; Be equipped with microswitch in said remote controller; Carry out the micromotion of said electrode according to the making operation that has made up said welding torch switch and said microswitch, said switching mechanism switches to said mode determination according to the said predetermined operation that has made up said welding torch switch and said microswitch.
In this invention; When mode determination switches; The operation of the micromotion of the microswitch through will being used to have made up welding torch switch and remote controller; Be made as the such predetermined operation of operation of for example carrying out stipulated number at the appointed time, thereby can easily switch to mode determination by the operation that has utilized two switches.
Invention described in the technical scheme 3 be the welding described in the technical scheme 2 with supply unit in; Said switching mechanism is in the time will finishing said mode determination; According at least one side's of said welding torch switch and said microswitch predetermined operation, and finish said mode determination.
In this invention, in the time mode determination will being finished, finish mode determination with previous identical welding torch switch or the microswitch of when mode determination switches (beginning), operating of switch, thereby the operation during end also becomes easy through operation.
Invention described in the technical scheme 4 be the welding described in technical scheme 2 or 3 with supply unit in; Through leading section that is provided in said welding torch and the contact chip of supplying power to said electrode; Said electrode during with said mode determination is made as short-circuit condition virtually; Said switching mechanism is along with according to the said predetermined operation that has made up said welding torch switch and said microswitch and to the switching of said mode determination; To be accommodated in the said contact chip because of the micromotion outstanding said electrode of conduct by the original respective action of the operation realization of said two switches.
In this invention; When mode determination switches; Because of based on the original respective action of the predetermined operation that has made up welding torch switch and microswitch, be the outstanding electrode of micromotion; The switching to mode determination along with being realized by this predetermined operation is incorporated in the contact chip of welding torch leading section.Thus, want during mensuration electrode is made as under the situation of short-circuit condition, do not need other operation just can easily realize making the contact chip of welding torch leading section to contact and electrode is made as short-circuit condition virtually with the subject side member.
Invention described in the technical scheme 5 be the welding described in the technical scheme 4 with supply unit in, said switching mechanism is along with the end of said mode determination, makes said electrode from the outstanding ormal weight of said contact chip.
In this invention, electrode in the contact chip that when mode determination switches, is contained in the welding torch leading section is given prominence to ormal weight along with the end of mode determination from contact chip.Thus, can easily transfer to and make the outstanding and weld job that carries out of electrode.
Invention described in the technical scheme 6 be each described welding in technical scheme 1～5 with supply unit in; The control of the inert gas that carries out emitting from the leading section of said welding torch in said when welding; Unusual exception reporting mechanism during as the practical measurement of report under the said mode determination adopts the sound of emitting of said gas.
In this invention, during unusual when the following practical measurement of report mode determination, utilization is reported to the operator from the sound of emitting of the gas that the welding torch leading section is emitted.That is, in the bonding machine that utilizes inert gas to weld, need not adopt the unusual mechanism of report in addition, just can be easily and reliably near the operator who separates from supply unit and be positioned at the electrode is reported.
Invention described in the technical scheme 7 is a kind of bonding machine, and it each described welding that possesses technical scheme 1～6 constitutes with supply unit.
In this invention, provide a kind of no matter situation is set how, can both easily carry out the bonding machine of the mensuration of resistance value and inductance value.
The invention effect
According to the present invention, can provide a kind of no matter situation is set how, the welding of mensuration of the employed resistance value of calculating and inductance value that can both easily carry out terminal voltage before the electrode is with supply unit and possess the bonding machine of this welding with supply unit.
Description of drawings
Fig. 1 is a pie graph of mainly representing the supply unit in the arc welding machine of this embodiment.
Fig. 2 is used for the key diagram that the variation to inductance value describes.
Fig. 3 is used for the key diagram that the computational methods to resistance value and inductance value describe.
Fig. 4 is at the pie graph that the arc welding machine that in the process of the handover operation that mode determination switches, uses is described.
Fig. 5 is the sequential chart that in the process of the handover operation that mode determination switches, uses in explanation.
Symbol description:
10 arc welding machines (bonding machine)
Supply unit is used in 11 welding
12 wire-electrode (electrode)
13 welding wire generators
22 inverter circuits
23 welding transformers
24 rectification circuits (DC converting mechanism)
25 direct current reactors (DC converting mechanism)
31 control device (controlling organization, front end voltage calculation mechanism, resistance value calculation mechanism, inductance value calculation mechanism, switching mechanism, exception reporting mechanism)
33 current sensors (testing agency)
34 voltage sensors (testing agency)
41 welding torch switches (console switch)
42 remote controller
42c microswitch (console switch)
45 gass collecting jar with ground-on cover plate (exception reporting mechanism)
46 by-pass valve controls (exception reporting mechanism)
The TH welding torch
The THa contact chip
The M welding object
The I output current
The Ip1 current value
The Ip2 current value
The V output voltage
Terminal voltage before the Va
R adds up to resistance value
L adds up to inductance value
L (I) function
The specific embodiment
Below, according to accompanying drawing the embodiment after the present invention is specialized is described.
Fig. 1 representes the arc welding machine 10 of consumable electrode type.In arc welding machine 10; Positive side lead-out terminal welding with supply unit 11 connects the wire-electrode 12 that is supported by welding torch TH; Minus side lead-out terminal at this supply unit 11 connects welding object M; Through the power supply of the direct current output power that generates by this supply unit 11, carry out arc welding to wire-electrode 12.At this moment, because wire-electrode 12 time is consumed in welding, so welding wire generator 13 is given corresponding to consumption.To wire-electrode 12 and welding object M, supply with output power via the power cable 14 that the lead-out terminal with supply unit 11 is connected.
It is that interchange input power converter with the three-phase that provides from source power supply is the device that is suitable for the direct current output power of arc welding that supply unit 11 is used in welding.Exchange input electric power and be transformed to direct current through the rectifier smoothing circuit 21 that is made up of diode bridge and smmothing capacitor, the direct current after the conversion is transformed to high-frequency alternating current through inverter circuit 22.Inverter circuit 22 is made up of the bridgt circuit that has used 4 switch element TR such as IGBT, implements the PWM control based on control device 31.
The high-frequency alternating current that is generated by inverter circuit 22 is transformed to the secondary side alternating current that is adjusted into the assigned voltage value by welding transformer 23.The rectification circuit 24 and direct current reactor 25 of the secondary side alternating current of welding transformer 23 through having used diode is transformed to the direct current output power that is suitable for arc welding.
The direct current reactor 25 of this embodiment uses the supersaturation reactor with supersaturation characteristic.The characteristic of direct current reactor 25 is as shown in Figure 2, and the big high galvanic areas of ratio rated current value Ia that comprises current value I p1 is the common characteristic zone A1 fixing with the MIN inductance value La of necessity.On the other hand, becoming low current zone below the rated current value Ia is the supersaturation characteristic zone A2 (current value I p2, inductance value Lb) that the minimizing inductance value along with current value increases linearly gradually.Promptly; Through the direct current reactor 25 that adopts such characteristic; Thereby it is little in high galvanic areas inductance value; So the influence to being used for the level and smooth Waveform Control of electric current is little, prevented arc cutting thereby increase inductance value in the low current zone passage, generated at all suitable direct current output power of whole galvanic areas.
As shown in Figure 1, the switch element TR of 31 pairs of inverter circuits 22 of control device implements PWM control, makes the direct current output power be the control of appropriate value often.At this moment, control device 31 carries out output current I and the detection of output voltage V constantly, carries out the feedback to PWM control based on detected output current I and output voltage V.
That is, possess current sensor 33 on the power line of the minus side lead-out terminal in supply unit 11, control device 31 detects the output current I of supply units 11 via this current sensor 33 in handling part (CPU) 32.In addition, possess voltage sensor 34 between the power line after adjacent rectification circuit 24, control device 31 detects the output voltage V of supply units 11 via this voltage sensor 34 in handling part 32.Control device 31 carries out the calculating of the dutycycle (duty) of PWM control based on by detected constantly output current I of handling part 32 and output voltage V, generates the pwm control signal to inverter circuit 22 outputs.
At this, in PWM control, as the output voltage V that is used to control, preferred employing correctly produces the preceding terminal voltage Va of the wire-electrode 12 of electric arc, but the direct detection of preceding terminal voltage Va is difficult.For this reason; Control device 31 will remain on the storage device (diagram slightly) by the voltage variety 12 from voltage sensor 34 to electrode in advance; Detected output voltage V is constantly carried out the correction of this voltage variety; With terminal voltage Va before obtaining, and implement to have adopted the PWM of the preceding terminal voltage Va that is calculated to control.
Yet; The voltage variety 12, there is the voltage variety (from lead-out terminal via the voltage variety that by resistance value R2 and inductance value L2 cause of power cable 14 till electrode 12 front ends) of inner voltage variety of supply unit 11 (till by resistance value R1 and the caused voltage variety of inductance value L1) and outside from rectification circuit 24 to lead-out terminal from voltage sensor 34 to electrode.In order not receive the influence of user mode; The calculating of terminal voltage Va before can the builtin voltage variable quantity of supply unit 11 being enrolled as correction term in advance; But the external voltage variable quantity is because the cable of power cable 14 is long or any intermediate position (straight-run or coiling lay, its winding number) waits, condition is because of each user's difference, so largely receive resistance value R2, the particularly influence of the variation of inductance value L2.
For this reason; The user is provided with arc welding machine 10 at the scene; Also comprise when becoming correct user mode in being laid in of power cable 14, measure the resistance value R and the inductance value L that obtain after the resistance value R1 of inside and inductance value L1 and outside resistance value R2 and inductance value L2 added up to.Total resistance value R that mensuration obtains and total inductance value L are maintained in the control device 31.
In addition; The supply unit 11 of this embodiment possesses mode determination; This mode determination is carried out and is used to the processing carrying out above-mentioned total resistance value R and add up to the mensuration of inductance value L, based on after the operation (input of operation signal) of the various switches stated, control device 31 can move to mode determination.In addition; During mensuration under mode determination; Need make between wire-electrode 12 and the welding object M and become short-circuit condition; But as shown in Figure 1 in this embodiment, not with wire-electrode 12 and welding object M direct short-circuit, but make the leading section that is provided in welding torch TH and measure to contact chip THa and welding object M short circuit that wire-electrode 12 is supplied power.In this case, also can make the special fixtures that short circuit uses uses.
If mode determination is described in detail, as shown in Figure 3, at first, make inverter circuit 22 work, output current I increases to current value I p1.This current value I p1 is in the monomer of the direct current reactor with supersaturation characteristic 25, with the current value of the fixing common characteristic zone A1 of inductance value La.In fact, as shown in Figure 2, owing to characteristic squints because of any intermediate position of power cable 14 etc.,, be set to the current value of the common characteristic zone A1 that has considered this side-play amount so add up to inductance value L to fix with the value La1 of skew.And, measure the average voltage level Ve in the interval that keeps with such current value I p1.Thus, at first calculate total resistance value R through following formula (a).
R＝Ve/Ip1···(a)
Then, the action of inverter circuit 22 is stopped, picking up counting from moment T0 at this moment.Simultaneously; Carry out with moment T0 is the sampling of the output current I that changes constantly of starting point; The moment that will reach conduct and the current value Δ Ip1 (Ip1 * 36.8%) of the corresponding current attenuation amount of time constant is made as T1, tries to achieve time (time constant) τ 1 between this moment T1-T0.Thus, calculate through following formula (b) at the total inductance value La1 of characteristic zone A1 variation usually (being inductance value La in the monomer of reactor 25).
La1＝R·τ1(＝Ve·τ1/Ip1)···(b)
Then, make inverter circuit 22 actions once more, output current I is adjusted to the rated current value Ip2 in the A2 of supersaturation characteristic zone.After adjustment, the action of inverter circuit 22 is stopped, picking up counting from moment T2 at this moment.Simultaneously; Carry out with moment T2 is the sampling of the output current I that changes constantly of starting point; The moment that will reach conduct and the current value Δ Ip2 (Ip2 * 36.8%) of the corresponding current attenuation amount of time constant is made as T3, tries to achieve time (time constant) τ 2 between this moment T3-T2.Thus, the total inductance value Lb1 that A2 changes in supersaturation characteristic zone (in the monomer of reactor 25, being inductance value Lb) is calculated by following formula (c).
Lb1＝R·τ2＝(Ve·τ2/Ip2)···(c)
Then, as shown in Figure 2, the total inductance value La1 of the common characteristic zone A1 that calculates and the total inductance value Lb1 of supersaturation characteristic zone A2 augment through straight line, obtain adding up to the function L (I) of inductance value L as electric current I.Then, the function L (I) of the total inductance value L that obtains like this and the total resistance value R that had before obtained are remained in the control device 31.Thus, mode determination finishes.
Then, control device 31 is in when action welding, terminal voltage Va before being calculated by following formula (d) according to constantly output current I and output voltage V.
Va＝V-L(I)·dI/dt-RI ···(d)
In addition, if with concrete numeric representation, with current value I p1=400 [A] output 10 [ms] clock of output current I, afterwards, make inverter circuit 22 disconnections according to the connection of inverter circuit 22.When average voltage level Ve during this period is 4 [V],, calculate total resistance value R, R=Ve/Ip1=4/400=0.01 [Ω] according to above-mentioned formula (a).
Then; The current value Δ Ip1 that current value I p1 becomes the current attenuation amount suitable with timeconstant 1 is Δ Ip1=400 * 0.368=147 [A]; Output current I is 3 [ms] from the timeconstant 1 that 400 [A] reach 147 [A] if make inverter circuit 22 break off afterwards, then according to above-mentioned formula (b)
La1＝R·τ1＝0.01×3＝0.03[mH]
In common characteristic zone A1, calculate the total inductance value La1 of the inductance value La of the monomer that comprises direct current reactor 25.In addition, above-mentioned current value I p1 needs to infer according to the specification of the direct current reactor 25 that uses in advance, and is set at the value that does not reach supersaturation characteristic zone A2.
Then, inverter circuit 22 is connected, output current I is made as for example suitable with the minimum current of the arc welding machine 10 current value I p2=20 [A] in the A2 of supersaturation characteristic zone, output 10 [ms] clock afterwards, turn-offs inverter circuit 22.The current value Δ Ip2 that current value I p2 becomes the current attenuation amount suitable with timeconstant 2 does
ΔIp2＝20×0.368＝7[A]
If output current I is 10 [ms] from the timeconstant 2 that 20 [A] reach 7 [A] after the disconnection inverter circuit 22, then according to above-mentioned formula (c),
Lb1＝R·τ2＝0.01×10＝0.1[mH]
In the A2 of supersaturation characteristic zone, calculate the total inductance value Lb1 of the inductance value Lb of the monomer that comprises direct current reactor 25.
Then, augment, thereby obtain adding up to the function L (I) of inductance value L, and, can calculate preceding terminal voltage Va constantly according to above-mentioned formula (d) according to this function and the total resistance value R that had before obtained through the straight line that carries out these La1=0.03 [mH], Lb1=0.1 [mH].In addition, the above-mentioned concrete numerical value of enumerating is an example, is not to be defined in this.
Even also can suitably calculate preceding terminal voltage Va in the welding of this embodiment that adopts direct current reactor 25 like this in supply unit 11, can carry out the control constantly of inverter circuit 22 more rightly based on the preceding terminal voltage Va that suitably calculates thus with supersaturation characteristic.Therefore, through with the complementary effect of the reactor 25 that adopts the supersaturation characteristic, can be created on all direct current output powers of using of arc welding more suitably of whole galvanic areas.
Though operation according to the console switch that in supply unit 11, is equipped with (diagram slightly); Shift to above-mentioned mode determination; But it is as shown in Figure 4 in this embodiment; Use is in the welding torch switch (welding torch SW) 41 of welding torch TH outfit and the remote controller 42 that is equipped with at welding wire generator 13, through operating also and can shift to mode determination in the position of leaving supply unit 11.
Be equipped with the trigger-type welding torch switch 41 that is switched on through traction at welding torch TH.Welding torch switch 41 manually carries out the making operation that will begin to weld through the operator, to wire-electrode 12 electric power is provided thus.In addition, operate with the microswitch of behind the remote controller pairs setting system, stating (fine motion SW) 42c, carry out the micromotion of wire-electrode 12 through welding torch switch 41.Specifically, if in the making operation of microswitch 42c, welding torch switch 41 is connected, then see the wire-electrode 12 of specific length off through making operation, adjustment wire-electrode 12 is from the overhang of the leading section of welding torch TH.
Then; Use the microswitch 42c of such welding torch switch 41 and remote controller 42; Because the predetermined operation with reference to Fig. 5 that the operator formulates in advance, according to the input of the operation signal corresponding with this predetermined operation to control device 31, this control device 31 switches to above-mentioned mode determination.
At first, carry out under the state of making operation, in the T (for example several seconds) welding torch switch 41 is carried out making operation 5 times at the appointed time at microswitch 42c to operator's remote controller 42.Because this operation is and the operation identical operations of the micromotion of implementing wire-electrode 12 that so pass through 5 making operations of the welding torch switch 41 under the on-state of microswitch 42c, wire-electrode 12 is given prominence to 5 times overhang.Finish if originally operate in the stipulated time T; Then the control device 31 of supply unit 11 is in order to switch to mode determination; Make the wire-electrode outstanding 12 through previous micromotion retreat (retract) this more than overhang; Holding welding wire electrode 12 in the contact chip THa of the leading section of welding torch TH afterwards, switches to mode determination.
Then, the operator makes the contact chip THa of the leading section of welding torch TH contact with welding object M, wire-electrode 12 is made as short-circuit condition (with reference to Fig. 1) virtually.If under this short-circuit condition, connect welding torch switch 41, beginning practical measurement that then taking this as an opportunity.Practical measurement is carried out about the several seconds back and is finished, for terminal voltage V before calculating, and practical measurement and obtain adding up to inductance value L (function) and add up to resistance value R a to keep by the storage devices in the control device 31.
Then, when practical measurement finished, the operator carried out making operation 5 times to welding torch switch 41.Through carrying out this operation, make the fine motion of the wire-electrode 12 outstanding ormal weights of in the contact chip THa of the leading section of welding torch TH, accommodating, mode determination finishes.
In addition; In comprising the mode determination of practical measurement; Under the situation of the measured value mistake in the mensuration mistake of the poor short circuit of the fore-end that has produced welding torch TH, minute deficiency etc. or when having obtained unusual measured value etc., carry out this exception reporting to the operator.This exception reporting is to report through the display part that in supply unit 11, is equipped with etc.; But when using welding torch switch 41 or remote controller 42 to operate; Supply unit 11 is left near the position that is positioned at welding torch TH owing to the hypothesis operator, so need near it, report.For this reason; In hypothesis is to emit on one side inert gas (carbon dioxide or argon gas, its mist etc.) to carry out on one side under the situation of arc welding machine 10 of arc welding from the leading section of welding torch TH; The control device 31 of supply unit 11 is through control by-pass valve control 46; Utilization is carried out previous exception reporting from the sound of emitting of the gas that the leading section of welding torch TH is emitted, and above-mentioned by-pass valve control 46 is used for controlling the supply from the inert gas of gas collecting jar with ground-on cover plate 45.
Next, the distinctive effect of notebook embodiment.
(1) supply unit 11 (control device 31) has the relevant total resistance value R till the front end of electrode 12 of the calculating measured with preceding terminal voltage Va and the mode determination of total inductance value L (being function L (I)) in this embodiment.And; When mode determination switches; Through the predetermined operation of carrying out combining, thereby separate the switching of carrying out to said mode determination with operated switch 41, the original respective action of 42c with at the welding torch switch 41 of the remote controller pairs setting system of welding torch TH and welding wire generator 13 and microswitch 42c.Promptly; Be used for carrying out switch 41,42c through employing in the action that separated originally of welding torch TH remote controller 42 outfits; Thereby need not be provided for the switch implementing to measure in addition; Through being positioned near these welding torches TH and the switch 41 of remote controller 42, the predetermined operation of 42c the electrode 12, thereby can when measuring, confirm easily to implement mensuration in the state of fore-end of electrode 12.Thus, even, also can easily implement to measure opening in 12 minutes under the situation that is provided with of supply unit 11 self of very big distance with electrode.
(2) when mode determination switches; Operation through being used to have made up welding torch switch 41 and the micromotion of microswitch 42c is made as predetermined operation; Thereby the operation by having utilized two switches 41,42c can easily switch to mode determination, and the afore mentioned rules operation is meant in this embodiment have been carried out in the T welding torch switch 41 being carried out 5 such operations of operation at the appointed time under the state of making operation to microswitch 42c.
(3) during the end of mode determination, finish mode determination with the identical welding torch switch of when previous mode determination switches (beginning), operating 41 of switch, so the operation during end also becomes easy through operation.
(4) when mode determination switches; Because of based on having made up the original respective action of welding torch switch 41, being the outstanding electrode of micromotion 12 with the predetermined operation of microswitch 42c; Along with the switching that realizes by predetermined operation, and be incorporated in the contact chip THa of leading section of welding torch TH to mode determination.Thus, when measuring, to electrode 12 be made as under the situation of short-circuit condition, not need operation bidirectional, can easily realize making the contact chip THa of the leading section of welding torch TH to contact and electrode 12 is made as short-circuit condition virtually with subject side member (welding object M).
(5) when mode determination switches, the electrode of in the contact chip THa of the leading section of welding torch TH, accommodating 12 along with the end of mode determination from the outstanding ormal weight of contact chip THa.Thus, can easily be transferred to and make the outstanding and weld job that carries out of electrode 12.
(6) during unusual when the following practical measurement of report mode determination, utilization carries out this report to the operator from the sound of emitting of the gas that the leading section of welding torch TH is emitted.That is,, need not adopt the mechanism that is used for reporting in addition being to utilize under the situation of the such bonding machine 10 of this embodiment that inert gas welds, can be easily and reliably to reporting away from supply unit 11 and near be positioned at the electrode 12 operators.
In addition, embodiment of the present invention also can carry out following change.
In the above-described embodiment; As the predetermined operation when mode determination switches; Adopted under the state that microswitch 42c has been carried out making operation and in the T welding torch switch 41 has been carried out 5 such operations of operation at the appointed time; But employed switch and predetermined operation are not limited thereto, and can suitably change.In addition, the predetermined operation when finishing as mode determination adopted welding torch switch 41 is carried out 5 such operations of operation, but this also can suitably change.
In the above-described embodiment; Based on having adopted welding torch switch 41 and the predetermined operation that microswitch 42c carries out to switch or the end mode determination, carry out but also can adopt with other the different switch of these switches that in welding torch TH or remote controller 42, is equipped with to mode determination.The electric current that for example, also can be employed in the remote controller 42 rotary operation type that is equipped with and voltage with rotary switch 42a, 42b.In addition, the console switch beyond welding torch switch 41, microswitch 42c, rotary switch 42a, 42b is provided under the situation of welding torch TH or remote controller 42 and also can adopts these switches.
Used direct current reactor 25 in the above-described embodiment, but also can use general reactor with current value and the fixing linear characteristic that changes of inductance value with supersaturation characteristic.In addition, if use such reactor, the mensuration through the primary current attenuation just can obtain inductance value (need not obtain function), and is easy thereby the calculating of preceding terminal voltage Va becomes.
In the above-described embodiment; During unusual when the practical measurement of report under the mode determination; Adopted the sound of emitting of the gas of emitting from the leading section of welding torch TH, but, also can utilize each mechanism being that gas is emitted under the situation of the device that possesses pronunciation mechanism or lighting means beyond the sound.In this case, preferably be employed in the mode that near be positioned at the electrode 12 welding torch TH or remote controller 42, welding wire generator 13 etc. are equipped with.In addition, also can adopt the mode of not carrying out exception reporting.
Claims (7)
1. welding supply unit; It possess with direct current be transformed to high-frequency alternating current inverter circuit, carry out the alternating current after the conversion the voltage adjustment welding transformer and generate the DC converting mechanism of the direct current output power that is suitable for welding according to the secondary side alternating current of this welding transformer; It also possesses controlling organization; This controlling organization be based on the said output power that generated to the supply of electrode and welding object between be used in the mechanism that the electric arc of welding produces; And based on the preceding terminal voltage of calculating said electrode by detected output current of testing agency in this device and output voltage; Preceding terminal voltage based on calculating is controlled said inverter circuit
Wherein, Said welding has the mode determination of carrying out the processing that comprises resistance value calculation mechanism and inductance value calculation mechanism with supply unit; And possesses front end voltage calculation mechanism; Said resistance value calculation mechanism is made as short-circuit condition with said electrode and handles; The magnitude of voltage of the said output voltage when being made as the rated current value based on the said output current that will produce by the action of said inverter circuit; Calculate the total resistance value on the path till the said electrode front end, said inductance value calculation mechanism is made as short-circuit condition with said electrode and handles, the current attenuation amount that begins when being set at the rated current value based on the said output current that will be produced by the action of said inverter circuit; Calculate the total inductance value on the path till the said electrode front end; Said front end voltage calculation mechanism is to by said total resistance value and the relevant voltage variety of said total inductance value on the magnitude of voltage correction of the detected said output voltage of said testing agency and the path till said electrode front end, calculate said before terminal voltage
Said welding also possesses switching mechanism with supply unit; The predetermined operation that this switching mechanism can carry out according at least one switch that utilizes in the various console switch; Switch said mode determination with the original respective action of operated switch, said various console switch are arranged at the welding torch of the support of carrying out said electrode and power supply respectively and are that the remote controller that is equipped with in the welding wire generator of giving of this electrode is carried out in consumption when welding under the situation of wire-electrode corresponding to said electrode differently.
2. supply unit is used in welding according to claim 1, it is characterized in that,
Be equipped with the welding torch switch at said welding torch, be equipped with microswitch, carry out the micromotion of said electrode according to the making operation that has made up said welding torch switch and said microswitch in said remote controller,
Said switching mechanism switches to said mode determination according to the said predetermined operation that has made up said welding torch switch and said microswitch.
3. supply unit is used in welding according to claim 2, it is characterized in that,
Said switching mechanism according at least one side's of said welding torch switch and said microswitch predetermined operation, and finishes said mode determination in the time will finishing said mode determination.
4. use supply unit according to claim 2 or 3 described welding, it is characterized in that,
Through leading section that is provided in said welding torch and the contact chip of supplying power to said electrode, the said electrode during with said mode determination is made as short-circuit condition virtually,
Said switching mechanism is along with according to the said predetermined operation that has made up said welding torch switch and said microswitch and to the switching of said mode determination; To be accommodated in the said contact chip because of the micromotion outstanding said electrode of conduct by the original respective action of the operation realization of said two switches.
5. supply unit is used in welding according to claim 4, it is characterized in that,
Said switching mechanism makes said electrode from the outstanding ormal weight of said contact chip along with the end of said mode determination.
6. use supply unit according to each described welding of claim 1～5, it is characterized in that,
The control of the inert gas that carries out emitting from the leading section of said welding torch in said when welding,
Unusual exception reporting mechanism during as the practical measurement of report under the said mode determination adopts the sound of emitting of said gas.
7. a bonding machine is characterized in that, each the described welding that possesses claim 1～6 constitutes with supply unit.
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| JP2011-015510 | 2011-01-27 | ||
| JP2011015510A JP5756298B2 (en) | 2011-01-27 | 2011-01-27 | Welding power supply and welding machine |
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| CN102615385A true CN102615385A (en) | 2012-08-01 |
| CN102615385B CN102615385B (en) | 2015-08-05 |
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| CN107073629A (en) * | 2014-11-11 | 2017-08-18 | 松下知识产权经营株式会社 | Welder and welding method |
| CN107824955A (en) * | 2017-10-23 | 2018-03-23 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of tool and method for measuring and positioning for double-shaft shoulder agitating friction weldering |
| CN111745264A (en) * | 2019-03-29 | 2020-10-09 | 林肯环球股份有限公司 | Real-time resistance monitoring of arc welding circuits |
| CN112439974A (en) * | 2019-08-30 | 2021-03-05 | 株式会社达谊恒 | Welding device |
| CN113000983A (en) * | 2019-12-18 | 2021-06-22 | 发那科株式会社 | Arc welding robot system |
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| KR101427634B1 (en) * | 2012-08-29 | 2014-08-07 | (주)퍼스트파워일렉트로닉스 | Self Controllabe Welding Power Apparatus |
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Also Published As
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| JP2012152806A (en) | 2012-08-16 |
| CN102615385B (en) | 2015-08-05 |
| JP5756298B2 (en) | 2015-07-29 |
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