JP5569632B2 - Composite welding equipment - Google Patents

Composite welding equipment Download PDF

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JP5569632B2
JP5569632B2 JP2013151395A JP2013151395A JP5569632B2 JP 5569632 B2 JP5569632 B2 JP 5569632B2 JP 2013151395 A JP2013151395 A JP 2013151395A JP 2013151395 A JP2013151395 A JP 2013151395A JP 5569632 B2 JP5569632 B2 JP 5569632B2
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welding
setting means
wire
time
laser
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JP2013212541A (en
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紀典 本宮
静波 王
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パナソニック株式会社
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  The present invention relates to a composite welding apparatus and a composite welding method that generate an arc between a welding wire and a welding position of an object to be welded and further use laser light.

  The combined welding method of laser welding and arc welding is used as a method capable of simultaneously obtaining high-speed laser welding and gap tolerance of arc welding.

  In actual welding, it is often necessary to improve the welding quality at the start and end of welding.

  As control methods at the start and end of welding of composite welding, there are those disclosed in Patent Documents 1 to 4.

  According to the method disclosed in Patent Document 1, it is effective to perform arc discharge after starting or simultaneously with starting laser irradiation and to stop laser irradiation after or simultaneously with stopping arc discharge.

  According to the method disclosed in Patent Document 2, it is effective to start feeding the welding wire and outputting the welding voltage after irradiating the laser for a predetermined preceding irradiation time.

  According to the methods disclosed in Patent Literature 3 and Patent Literature 4, after the laser output is stopped or reduced to a predetermined value at the welding end position, the welding end processing is performed mainly by arc welding, or the welding end position. It is effective to stop the laser output just before the welding, and then advance the welding a little further before performing the welding end process mainly by arc welding.

JP 2001-276888 A JP 2002-248571 A JP 2004-322159 A JP 2004-337934 A

  However, each of the above techniques has problems.

  In the method disclosed in Patent Document 1, if the laser irradiation at the end of welding becomes too longer than the arc discharge, the crater size at the end of welding may become too large, and the burnout may occur or depending on the material There was a risk of crater cracking.

  In the method disclosed in Patent Document 2, prior irradiation with a laser is required before arc discharge starts, and thus there is a possibility that the tact time may be increased in automatic welding with a large number of welding points.

  In both methods disclosed in Patent Document 3 and Patent Document 4, since crater processing is mainly performed by arc welding, it is possible to prevent crater dents or overgrowth of the crater. There was a fear that the penetration at the end of welding did not grow sufficiently.

  In order to solve the above-mentioned problems, an invention according to the present invention provides a wire feed for feeding a welding wire in a composite welding apparatus having a laser welding means and an arc welding means for simultaneously welding welding positions of workpieces. A welding power source device that generates an arc between a welding wire and a welding position, a laser device that generates laser light and irradiates the welding position, a wire feeding unit, a welding power source device, and a laser device. Control means for controlling, the control means controls the welding power supply device at the end of welding to stop the power supplied to the welding wire, and further controls the wire feeding means for a first predetermined time. After the welding wire is fed in a pulsed manner, the output of the laser beam and the feeding of the welding wire are stopped.

  Thus, at the end of the composite welding, the arc welding is finished first, and the crater generated during the arc welding is processed by the laser beam and the wire feeding, and at that time, the welding wire is fed in a pulse shape. It is possible to reliably perform crater processing without creating a hole.

  As described above, the present invention generates an arc between the welding wire and the welding position of the workpiece to be welded at the start of welding, and outputs a laser beam immediately after detecting that a welding current has flowed. Sometimes the power supplied to the welding wire is stopped, the welding wire is pulsed for the first predetermined time, and then the laser beam and the welding wire are stopped. In addition, at the end of welding, it is possible to prevent crater dents and overgrowth and ensure sufficient penetration.

The block diagram which shows the composite welding apparatus in Embodiment 1 and Embodiment 7 of this invention Timing diagram showing operations in the first and fourth embodiments of the present invention Timing chart showing operation in Embodiment 1 of the present invention (A) Schematic diagram showing a stable arc configuration of conventional arc welding, (b) Schematic diagram showing an unstable arc configuration at the start of conventional arc welding, (c) Stable at the start of welding in the first embodiment Schematic diagram showing arc form Timing chart showing welding voltage in Embodiment 1 of the present invention The block diagram which shows the composite welding apparatus in Embodiment 1 of this invention. The block diagram which shows the composite welding apparatus in Embodiment 2, Embodiment 3 and Embodiment 8 of this invention Timing chart showing the operation in the second embodiment of the present invention. Timing chart showing operation in Embodiment 3 of the present invention The block diagram which shows the composite welding apparatus in Embodiment 4 and Embodiment 9 of this invention The block diagram which shows the composite welding apparatus in Embodiment 5 and Embodiment 10 of this invention Timing diagram showing operations in the fifth and sixth embodiments of the present invention The block diagram which shows the composite welding apparatus in Embodiment 6 and Embodiment 11 of this invention Timing diagram showing operations in the seventh and ninth embodiments of the present invention Timing chart showing operation in the eighth embodiment of the present invention. Timing diagram showing operations in the tenth and eleventh embodiments of the present invention Block diagram showing a composite welding apparatus in Embodiment 12 of the present invention Timing diagram showing operations in the twelfth and fourteenth embodiments of the present invention. Block diagram showing a composite welding apparatus in Embodiment 12 of the present invention Block diagram showing a composite welding apparatus in Embodiment 13 of the present invention Timing chart showing operation in the thirteenth embodiment of the present invention. Block diagram showing a composite welding apparatus in Embodiment 14 of the present invention Block diagram showing a composite welding apparatus in Embodiment 15 of the present invention Timing diagram showing operations in the fifteenth and sixteenth embodiments of the present invention. Block diagram showing a composite welding apparatus in Embodiment 16 of the present invention. Timing chart showing operation in the twelfth embodiment of the present invention.

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a composite welding apparatus in Embodiment 1 of the present invention.

  In the figure, a laser apparatus 1 serving as a laser welding means comprises a laser oscillator 2, a laser transmission means 3, and a condensing optical system 4, and irradiates a welding position of a workpiece 6 with a laser beam 5. The laser transmission means 3 may be an optical fiber or a transmission system combined with a lens. The condensing optical system 4 may be composed of a single lens or a plurality of lenses.

  Further, the wire feeding means 7 feeds the welding wire 9 to the welding position of the workpiece 6 through the welding torch 8.

  A welding power source device 10 serving as an arc welding means generates a welding arc 11 between the welding wire 9 and the welding position of the workpiece 6 and a welding power (welding current and welding voltage) for maintaining it. ).

  Further, the control means 12 includes a welding activation signal Ws from the welding activation means 13, a time signal Tc from the time setting means 14, a time signal Tp 1 from the first time setting means 15, and a second time setting means 16. The time signal Tp2 and the current detection signal Sd from the welding power source device 10 are input, the welding output signal Ia is sent to the welding power source device 10, the wire feeding speed signal Wf is sent to the wire feeding means 7, and the laser output signal. Pw is output to the laser device 1 to control them.

  The control means 12 is inputted with the laser output signal Pw1 from the first pulse condition setting means 17 and the laser output signal Pw2 from the second pulse condition setting means 18.

  2 and 3 are timings showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in the configuration of the first embodiment of the present invention. FIG. 2 is a diagram illustrating the operation when the welding wire 9 and the workpiece 6 are not in contact with each other at the start of welding, and FIG. 3 is the operation when the welding wire 9 and the workpiece 6 are already in contact with each other at the beginning of welding. Indicates.

  Hereinafter, the operation of the first embodiment of the present invention will be described with reference to FIGS.

  First, the operation when the welding starting means 13 is operated and the welding start is selected will be described.

  First, the case where the welding wire 9 and the workpiece 6 are not in contact at the start of welding will be described with reference to FIG.

  At the start of welding t1, the control means 12 outputs the welding output signal Ia to the welding power source device 10 at the ON timing of the welding activation signal Ws from the welding activation means 13, and starts supplying welding power to the welding wire 9. At the same time, the wire feeding speed signal Wf0 is output to the wire feeding means 7 and controlled to feed the welding wire 9 toward the workpiece 6.

  When the welding wire 9 comes into contact with the workpiece 6 at time t2, a welding current flows and an arc is generated. Therefore, the welding power source apparatus 10 detects that the welding current has flowed, and a current detection signal Sd. Is output to the control means 12. The control means 12 immediately outputs the laser output signal Pw to the laser device 1 at the ON timing of the current detection signal Sd and controls to output the laser beam 5, and also performs wire feeding corresponding to the welding output signal Ia. The speed signal Wf1 is output to the wire feeding means 7 and composite welding is performed.

  The time Ts from the time point t1 to the time point t2 is the time until the welding wire 9 comes into contact with the workpiece 6 and no welding current flows, but a voltage called a no-load voltage is applied to the welding wire 9 and the welding target. This is a no-load voltage time applied between the object 6 and the object 6. The no-load voltage time Ts varies depending on the distance between the welding wire 9 and the workpiece 6 and the wire feed speed signal Wf0 at time t1. The wire feed speed signal Wf0 is set lower than the wire feed speed signal Wf1 after the welding current flows. This is because the welding wire 9 abruptly contacts the workpiece 6 to be welded. This is to prevent the arc start from getting worse.

  A welding current flows from time t2 and composite welding starts, but a welding current corresponding to the welding output Ia flows to the welding arc 11, and the welding voltage for maintaining the welding arc 11 stably is the welding wire 9 and the workpiece 6 to be welded. Between. The above composite welding is continued until time t3 when the welding start means 13 is operated and the end of welding is selected.

  Next, the case where the welding wire 9 and the workpiece 6 are already in contact at the start of welding will be described with reference to FIG. The description of the same contents as the operation shown in FIG. 2 is omitted.

  At the start of welding t1, the control means 12 outputs the welding output signal Ia to the welding power source device 10 and the wire feeding speed signal Wf to the wire feeding means 7 with the ON timing of the welding activation signal Ws, and the workpiece 6 The welding wire 9 is controlled to be fed toward Since the welding wire 9 and the workpiece 6 are already in contact with each other, the control means 12 receives the current detection signal Sd from the welding power source device 10 at the same time as this operation starts. It outputs to the apparatus 1 and shifts to the composite welding, and controls the wire feeding means 7 with the wire feeding speed signal Wf1. The subsequent operation is the same as that shown in FIG.

  According to the above configuration and operation, the welding arc 11 immediately after the start of welding is stabilized with the aid of laser irradiation. The principle will be described with reference to FIG.

  4, (a) is a stable arc form of conventional arc welding, (b) is an unstable arc form at the start of conventional arc welding, and (c) is a stable arc form at the start of welding in this embodiment. Are schematically shown.

  At the moment when welding starts and the welding wire 9 comes into contact with the workpiece 6, a current having a high current density flows through the contact portion, the tip of the welding wire 9 melts in a very short time, and the welding arc 11 is transferred. .

  The stable welding arc 11 has a conical shape extending substantially on the extension line of the welding wire 9 (FIG. 4A). However, the welding arc 11 generated immediately after the start of welding is in a transient state until the stable state is reached, and is not necessarily stable from the beginning as shown in FIG. In some cases, the welding wire 9 may deviate significantly from the extension line as shown in FIG. If this state continues further, the arc breaks. In the present embodiment, the welding arc 11 is stabilized by the action of laser induced plasma.

  The reason will be described with reference to FIG.

  When the local temperature on the surface of the workpiece 6 is rapidly increased by laser irradiation and reaches the boiling point of the metal, intense evaporation occurs and metal vapor is formed. As the metal vapor further absorbs energy and ionizes, a laser-induced plasma is formed. By increasing the conductivity in the vicinity of the laser-induced plasma, the welding arc 11 immediately after moving from the short circuit is easily discharged through the region and stabilized.

  In FIG. 1, in order to detect the welding current flowing, the welding power source apparatus 10 may directly detect the presence or absence of the welding current supplied to the welding wire 9, and the welding wire 9 and the workpiece to be welded may be detected. 6 may be detected indirectly with the welding voltage supplied between the two. As means for directly detecting the welding current, a CT (current transformer) or a hall element may be used.

  A method for indirectly detecting the welding current by detecting the welding voltage will be described with reference to FIG. FIG. 5 shows a voltage generated between the welding wire 9 and the workpiece 6 at the start of welding and its timing diagram. (A) and (b) correspond to the states of FIGS. 2 and 3, respectively. Vnol is a no-load voltage, Va is a welding voltage, and Vs is a very short-circuit voltage when the welding wire 9 contacts the workpiece 6. Vth1 is an intermediate voltage between the no-load voltage Vnol and the welding voltage Va, and Vth2 is an intermediate voltage between the welding voltage Va and the short-circuit voltage Vs. A method for detecting the presence or absence of the welding current using these voltages will be described.

  When the welding wire 9 and the workpiece 6 are in contact with each other and a current flows, in (a) the voltage changes from the no-load voltage Vnol to the welding voltage Va via the intermediate voltage Vth1, and in (b) the voltage changes from the short-circuit voltage Vs. The welding voltage Va changes via the intermediate voltage Vth2. Therefore, when (a) the voltage has passed the intermediate voltage Vth1 from the no-load voltage Vnol, (b) has detected the time when the intermediate voltage Vth2 has passed from the short-circuit voltage Vs, and this is the timing when the welding current flows. Can be considered.

  Next, the operation when the welding activation means 13 is operated to select the end of welding will be described with reference to FIG.

  At time t <b> 3, the control unit 12 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, the wire feeding means 7 is controlled so as to continue supplying the welding wire 9 to the workpiece 6 until the time t4 when the predetermined time Tc set by the time setting means 14 reaches, and the laser beam 5 is applied to the workpiece 6. The time Tp1 set by the first time setting means 15 is irradiated to the welding position with the laser output Pw1 set by the first pulse condition setting means 17, and the time Tp2 set by the second time setting means 16 is the second pulse. The laser apparatus 1 is controlled so as to continue the pulse-like output that repeats the irradiation with the laser output Pw2 set by the condition setting means 18.

  At time t4, the control means 12 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control means 7.

  The same applies even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the wire feed speed at the predetermined time Tc is equal to or lower than the set value before the power supply is stopped. Results are obtained.

  Further, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 as shown in FIG. Results are obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the wire feed speed at the predetermined time Tc. Each set value may be changed as the predetermined time Tc elapses.

  As described above, in the embodiment of the present invention, at the start of welding, an arc is generated between the welding wire and the welding position of the workpiece, and laser light is output immediately after detecting that the welding current has flowed. However, at the end of welding, the power to be supplied to the welding wire is stopped, the welding wire is fed for a predetermined time, and the laser beam is output in a pulse shape, and then the laser beam and the welding wire are stopped, thereby welding the composite welding. Stable welding quality can be obtained at the start, and crater dents and overgrowth can be prevented and sufficient penetration can be ensured at the end of welding.

(Embodiment 2)
FIG. 7 is a block diagram showing the configuration of the composite welding apparatus in Embodiment 2 of the present invention. FIG. 8 is a timing chart showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in the configuration of the second embodiment of the present invention. .

  In the second embodiment of the present invention, the first time setting means is that the laser beam 5 is irradiated in the form of a pulse during the predetermined time Tc set by the time setting means 14 of the first embodiment shown in FIG. During the period of the first predetermined time Tc1 set at 19, the welding wire 9 is continuously supplied, and the laser beam 5 is irradiated in a pulsed manner, and during the period of the second predetermined time Tc2 set by the second time setting means 20, the welding is continued. The supply of the wire 9 is stopped, and the laser beam 5 is irradiated in a pulse form. The same configuration as in the first embodiment, the timing indicating the same operation, and the same effect are obtained. The same reference numerals are assigned and detailed description thereof is omitted, and the parts different from the first embodiment in the second embodiment of the present invention will be described below with reference to FIGS.

  At time t <b> 3, the control unit 22 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, the wire feeding means 7 is controlled to continue supplying the welding wire 9 to the workpiece 6 until the time t5 when the predetermined time Tc1 set by the first predetermined time setting means 19 reaches, and the laser beam 5 is welded. The time Tp1 set by the first time setting means 15 is irradiated to the welding position of the object 6 with the laser output Pw1 set by the first pulse condition setting means 17, and the time Tp2 set by the second time setting means 16 is The laser apparatus 1 is controlled so as to continue the pulse-like output in which the irradiation with the laser output Pw2 set by the second pulse condition setting means 18 is repeated.

  At time t5, the control means 22 stops the welding wire 9 by controlling the wire control means 7, and further, until the time t4 when the predetermined time Tc2 set by the second predetermined time setting means 20 is reached, the laser device. By controlling 1, the laser beam 5 continues to be output in a pulse form, and at time t 4, the control unit 22 operates to stop the output of the laser beam 5 by controlling the laser device 1.

  The same applies even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the wire feed speed at the predetermined time Tc1 is equal to or less than the set value before the power supply is stopped. Results are obtained.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the wire transmission at the predetermined times Tc1 and Tc2. Each set value of the feeding speed may be changed as the predetermined times Tc1 and Tc2 elapse.

  As described above, in the second embodiment of the present invention, at the end of welding, the power supplied to the welding wire is stopped, the welding wire is fed for the first predetermined time, and the laser beam is irradiated in a pulsed manner to obtain the second predetermined time. By stopping the laser beam after a lapse of time, stable welding quality can be obtained at the start of the welding of the composite welding, and crater dents and overgrowth can be prevented and sufficient penetration can be ensured at the end of welding.

(Embodiment 3)
FIG. 9 is a timing diagram showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in Embodiment 3 of the present invention. The configuration used in the third embodiment is the same as that shown in the block diagram of FIG.

  In the third embodiment of the present invention, the output of the laser beam 5 is not a pulsed output during the first predetermined time Tc1 set by the first predetermined time setting means 19 of the second embodiment shown in FIG. Thus, the same configuration as in the second embodiment, the timing indicating the same operation, and the same operational effects are denoted by the same reference numerals, and detailed description thereof is omitted. Parts different from Embodiment 2 in Embodiment 3 will be described with reference to FIGS.

  At time t <b> 3, the control unit 22 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, the wire feeding means 7 is controlled to continue supplying the welding wire 9 to the workpiece 6 until the time t5 when the predetermined time Tc1 set by the first predetermined time setting means 19 reaches, and the laser beam 5 is welded. The laser device 1 is controlled so as to continuously irradiate the welding position of the object 6.

  At time t5, the control means 22 stops the welding wire 9 by controlling the wire control means 7, and further, until the time t4 when the predetermined time Tc2 set by the second predetermined time setting means 20 is reached, the laser device. 1, the time Tp1 set by the first time setting means 15 is irradiated with the laser output Pw1 set by the first pulse condition setting means 17, and the time Tp2 set by the second time setting means 16 is The pulsed output that repeats irradiation with the laser output Pw2 set by the second pulse condition setting unit 18 is continued, and at time t4, the control unit 22 controls the laser device 1 to output the output of the laser beam 5. Operates to stop.

  The same applies even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the wire feed speed at the predetermined time Tc is equal to or lower than the set value before the power supply is stopped. Results are obtained.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, the predetermined time Tc1, Tc2 wire feeding Each setting value of the speed may be changed as the predetermined times Tc1 and Tc2 elapse.

  Thus, in Embodiment 3 of the present invention, at the end of welding, the power supplied to the welding wire is stopped, the welding wire is fed for the first predetermined time and the laser beam is irradiated, and the laser beam is irradiated for the second predetermined time. When the welding of composite welding is started, stable welding quality is obtained by stopping the laser beam after the second predetermined time has elapsed, and crater dents and overgrowth are prevented at the end of welding. Can be secured.

(Embodiment 4)
FIG. 10 is a block diagram showing a composite welding apparatus in Embodiment 4 of the present invention.

  The timing chart showing welding start signal Ws, wire feed speed signal Wf, welding output signal Ia, current detection signal Sd, and laser output signal Pw is the same as that in FIG. 2 of the first embodiment.

  In the fourth embodiment of the present invention, the wire feeding means 7 is controlled by the control means 12 as the feeding operation of the welding wire 9 of the first embodiment shown in FIG. It is controlled by the power supply device 21, and the welding power supply device 21 is controlled by the control means 22, and the same configuration, the same operation timing, and the same function and effect as those of the first embodiment are the same. Detailed description will be omitted with reference numerals, and the operation of the fourth embodiment of the present invention that is different from the first embodiment will be described below with reference to FIGS.

  First, at time t1, the control unit 22 outputs the welding output signal Ia to the welding power source device 21 at the ON timing of the welding activation signal Ws. When receiving the welding output signal Ia, the welding power source device 21 supplies welding power to the welding wire 9 and controls the wire feeding means 7 with the wire feeding speed signal Wf0 to weld toward the workpiece 6. The wire 9 is fed.

  Next, at time t2, the welding power source device 21 outputs a current detection signal Sd indicating that a welding current has flowed to the control means 22, and at the ON timing of the current detection signal Sd, the wire feed speed signal Wf1 The feeding means 7 is controlled. The controller 22 immediately outputs the laser output signal Pw to the laser device 1 with the ON timing of the current detection signal Sd, and performs composite welding by irradiating the workpiece 6 with the laser beam 5.

  Further, at time t3, the control means 22 turns off the welding output signal Ia to the welding power source device 21 at the timing when the welding activation signal Ws is turned off. The welding power source device 21 stops the power supplied to the welding wire 9 with the OFF timing of the welding output signal Ia, and the welding wire 9 is attached to the workpiece 6 until the time t4 when the predetermined time Tc set by the time setting means 14 has elapsed. Keep feeding.

  In addition, the control means 22 has the time Tp1 set by the first time setting means 15 at the welding position of the workpiece 6 with the OFF timing of the welding activation signal Ws from the welding activation means 13 for the first time Tp1. Irradiation is performed with the laser output Pw1 set by the pulse condition setting unit 17, and the time Tp2 set by the second time setting unit 16 repeats irradiation with the laser output Pw2 set by the second pulse condition setting unit 18. The laser device 1 is controlled to continue the output.

  At time t <b> 4, the control unit 22 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  As in the first embodiment, even if the setting of the first pulse condition setting unit 17 is set to 0, the setting of the second pulse condition setting unit 18 and the wire feed speed at the predetermined time Tc are set before the power supply is stopped. The same result can be obtained even when the value is less than the set value.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the wire feed speed at the predetermined time Tc. Each set value may be changed as the predetermined time Tc elapses.

  Thus, in the fourth embodiment of the present invention, the same effect as in the first embodiment can be obtained by using the configuration shown in FIG.

(Embodiment 5)
FIG. 11 is a block diagram showing a composite welding apparatus in Embodiment 5 of the present invention.

  FIG. 12 is a timing diagram showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in the configuration of the fifth embodiment of the present invention.

  In the fifth embodiment of the present invention, feeding of the welding wire 9 is started at the ON timing of the current detection signal Sd indicating that the welding current of the first embodiment shown in FIG. 1 has flowed, and the welding start signal Ws is turned off. The control means 12 controls to stop the feeding of the welding wire 9 with timing, and the control means 23 controls to stop the feeding of the welding wire 9 with the OFF timing of the welding activation signal Ws. The same configuration, the same operation timing, and the same operation and effect as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Embodiment 5 will be described with reference to FIGS. 11 and 12.

  At time t3, the control unit 23 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws. Thereafter, the wire feeding means 7 is controlled so as to continue feeding the welding wire 9 to the workpiece 6 until the time t4 when the predetermined time Tc reaches, and the laser beam 5 is moved to the welding position of the workpiece 6 to the first position. The time Tp1 set by the time setting means 15 is irradiated with the laser output Pw1 set by the first pulse condition setting means 17, and the time Tp2 set by the second time setting means 16 is set by the second pulse condition setting means 18. The laser device 1 is controlled so as to continue the pulse-like output that repeats the irradiation with the laser output Pw2.

  At time t4, the control unit 23 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  The same applies even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the wire feed speed at the predetermined time Tc is equal to or lower than the set value before the power supply is stopped. Results are obtained.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the wire feed speed at the predetermined time Tc. Each set value may be changed as the predetermined time Tc elapses.

  Thus, in the fifth embodiment of the present invention, the same effect as in the first embodiment can be obtained by using the configuration shown in FIG.

(Embodiment 6)
FIG. 13 is a block diagram showing a composite welding apparatus in Embodiment 6 of the present invention.

  The timing chart showing welding start signal Ws, wire feed speed signal Wf, welding output signal Ia, current detection signal Sd, and laser output signal Pw is the same as FIG. 12 of the fifth embodiment.

  In the sixth embodiment of the present invention, the feeding operation of the welding wire 9 according to the fifth embodiment shown in FIG. The welding power source device 21 is controlled, and the welding power source device 21 is controlled by the control means 24. The same configuration as in the fifth embodiment, the same operation timing, and the same operational effects are provided. The same reference numerals are used and detailed description thereof is omitted, and only parts of the sixth embodiment of the present invention that are different from the fifth embodiment will be described below with reference to FIGS. 13 and 12.

  At time t3, the control unit 24 turns off the welding output signal Ia to the welding power source device 21 at the timing when the welding activation signal Ws is turned off. The welding power source device 21 stops the power supplied to the welding wire 9 with the OFF timing of the welding output signal Ia, and the welding wire 9 is attached to the workpiece 6 until the time t4 when the predetermined time Tc set by the time setting means 14 has elapsed. Keep feeding.

  Further, the control means 24 has the time Tp1 set by the first time setting means 15 at the welding position of the workpiece 6 with the OFF timing of the welding activation signal Ws from the welding activation means 13 for the first time Tp1. Irradiation is performed with the laser output Pw1 set by the pulse condition setting unit 17, and the time Tp2 set by the second time setting unit 16 repeats irradiation with the laser output Pw2 set by the second pulse condition setting unit 18. The laser device 1 is controlled to continue the output.

  At time t4, the control unit 24 operates to stop the laser beam 5 by controlling the laser device 1 and to stop the welding wire 9 by controlling the wire control unit 7.

  The same applies even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the wire feed speed at the predetermined time Tc is equal to or lower than the set value before the power supply is stopped. Results are obtained.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the wire feed speed at the predetermined time Tc. Each set value may be changed as the predetermined time Tc elapses.

  Thus, in the sixth embodiment of the present invention, the same effect as in the first embodiment can be obtained by using the configuration shown in FIG.

(Embodiment 7)
FIG. 14 is a timing chart showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in Embodiment 7 of the present invention. The same structure as that of the first embodiment is used.

  In the seventh embodiment of the present invention, the welding wire 9 is continuously supplied during the period of the predetermined time Tc set by the time setting means 14 of the first embodiment shown in FIGS. 1 and 2, and the laser beam 5 is pulsed. The irradiation is performed in such a manner that the welding wire 9 is supplied in a pulse shape during the predetermined time Tc and the laser beam 5 is continuously irradiated. In addition, the same reference numerals are given to the same operational effects, and detailed description thereof will be omitted. Hereinafter, the operation of the seventh embodiment of the present invention different from that of the first embodiment will be described with reference to FIG. 1 and FIG.

  At time t <b> 3, the control unit 12 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, the time Tp1 set by the first time setting means 15 is set by the first pulse condition setting means 17 until the time t4 when the predetermined time Tc set by the time setting means 14 reaches, is set to the workpiece 6. The time Tp2 set by the second time setting means 16 is supplied at the wire feed speed Pw1, and the pulse-like supply is repeated to repeat the supply at the wire feed speed Pw2 set by the second pulse condition setting means 18. In addition to controlling the wire feeding means 7, the laser apparatus 1 is controlled so as to continue irradiating the welding position of the workpiece 6 with the laser beam 5.

  At time t4, the control means 12 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control means 7.

  Even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the laser output at the predetermined time Tc is set to be equal to or less than the set value before stopping the power supply, the same result is obtained. can get.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the laser output at the predetermined times Tc1 and Tc2. Each set value may be changed as the predetermined time Tc elapses.

  As described above, in the seventh embodiment of the present invention, at the end of welding, the power supplied to the welding wire is stopped, the welding wire is supplied in a pulse shape for a predetermined time, and the laser beam is output, and then the laser beam and the welding are supplied. By stopping the wire, stable welding quality can be obtained at the start of the welding of the composite welding, and crater dents and overgrowth can be prevented and sufficient penetration can be ensured at the end of welding.

(Embodiment 8)
FIG. 15 is a timing chart showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in Embodiment 8 of the present invention. A configuration similar to that of the second embodiment is used.

  In the eighth embodiment of the present invention, the welding wire 9 is continuously supplied during the period of the first predetermined time Tc1 set by the first time setting means 19 of the second embodiment shown in FIGS. For the second predetermined time Tc2 set by the subsequent second time setting means 20, the supply of the welding wire 9 is stopped and the laser beam 5 is irradiated in a pulsed manner. During the predetermined time Tc1, the welding wire 9 is supplied in a pulse shape and continuously irradiated with the laser beam 5, and during the subsequent second predetermined time Tc2, the supply of the welding wire 9 is stopped and the laser beam 5 is irradiated. Thus, the same configuration as in the second embodiment, the timing when the same operation is performed, and the same operational effects are denoted by the same reference numerals, and the detailed description thereof is omitted. The eighth embodiment is different from the second embodiment. The portion that will be described with reference to FIGS. 7 and 15.

  At time t <b> 3, the control unit 22 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, until the time t5 when the predetermined time Tc1 set by the first predetermined time setting means 19 reaches, the time Tp1 set by the first time setting means 15 to the workpiece 6 is the first pulse condition setting means. 17 is supplied at the wire feed speed Pw1 set at 17, and the time Tp2 set by the second time setting means 16 is pulsed to repeat the supply at the wire feed speed Pw2 set by the second pulse condition setting means 18. The wire feeding means 7 is controlled so as to be supplied, and the laser device 1 is controlled so that the laser beam 5 is continuously irradiated to the welding position of the workpiece 6.

  At time t5, the control means 22 stops the welding wire 9 by controlling the wire control means 7, and further, until the time t4 when the predetermined time Tc2 set by the second predetermined time setting means 20 is reached, the laser device. The laser beam 5 is continuously irradiated by controlling 1, and at time t <b> 4, the control unit 22 operates to stop the output of the laser beam 5 by controlling the laser device 1.

  The same applies even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the laser output at the predetermined times Tc1 and Tc2 are set to be equal to or less than the set values before the power supply is stopped. Results are obtained.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the laser output at the predetermined times Tc1 and Tc2. Each set value may be changed as the predetermined time Tc elapses.

  As described above, in the eighth embodiment, the power supplied to the welding wire is stopped at the end of welding, the welding wire is supplied in a pulse shape for the first predetermined time, and the laser beam is irradiated to pass the second predetermined time. Thereafter, by stopping the laser beam, stable welding quality can be obtained at the start of welding of composite welding, and at the end of welding, crater dents and overgrowth can be prevented and sufficient penetration can be ensured.

(Embodiment 9)
The configuration of the ninth embodiment of the present invention is the same as that of the fourth embodiment, and includes welding start signal Ws, wire feed speed signal Wf, welding output signal Ia, current detection signal Sd, and laser output signal Pw. The timing chart shown is the same as FIG. 14 of the eighth embodiment.

  In the ninth embodiment of the present invention, the welding wire 9 is continuously supplied during the period of the predetermined time Tc set by the time setting means 14 of the fourth embodiment shown in FIGS. 10 and 14, and the laser beam 5 is pulsed. Irradiation is performed by supplying the welding wire 9 in a pulsed manner for a predetermined time Tc and continuing to irradiate the laser beam 5. The configuration and operation similar to those of the fourth embodiment are performed. The same reference numerals are given to the timings shown, and the same operational effects are denoted by the same reference numerals, and detailed description thereof will be omitted. Hereinafter, portions of the ninth embodiment of the present invention different from the fourth embodiment will be described with reference to FIG. This will be described with reference to FIG.

  At time t3, the control unit 22 turns off the welding output signal Ia to the welding power source device 21 at the timing when the welding activation signal Ws is turned off. The welding power supply device 21 stops the power supplied to the welding wire 9 with the OFF timing of the welding output signal Ia, and the welding wire 9 is connected to the workpiece 6 until the time t4 when the predetermined time Tc set by the time setting means 14 has elapsed. The time Tp1 set by the first time setting means 15 is supplied at the wire feed speed Pw1 set by the first pulse condition setting means 17, and the time Tp2 set by the second time setting means 16 is the second pulse condition. The wire feeding means 7 is controlled so as to continue the pulse-like supply that repeats the supply at the wire feeding speed Pw2 set by the setting means 18.

  Further, the control means 22 controls the laser apparatus 1 so that the laser beam 5 is continuously irradiated to the welding position of the workpiece 6 with the OFF timing of the welding activation signal Ws from the welding activation means 13.

  At time t <b> 4, the control unit 22 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  Even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the laser output at the predetermined time Tc is set to be equal to or less than the set value before stopping the power supply, the same result is obtained. can get.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Furthermore, the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and each setting of the laser output at a predetermined time. The value may be changed as the predetermined time Tc elapses.

  Thus, in the ninth embodiment of the present invention, the same effects as in the fourth embodiment can be obtained by adopting the configuration and operation shown in FIGS. 10 and 14.

(Embodiment 10)
FIG. 16 is a timing chart showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in the tenth embodiment of the present invention. The same as in Embodiment 5 is used.

  In the ninth embodiment of the present invention, the welding wire 9 is continuously supplied for a predetermined time Tc set by the time setting means 14 of the fifth embodiment shown in FIG. In the period of the predetermined time Tc, the welding wire 9 is supplied in a pulse shape and continuously irradiated with the laser beam 5, and the same configuration as in the fifth embodiment, the timing indicating the same operation, In addition, the same reference numerals are assigned to the same operational effects, and detailed description thereof is omitted. Hereinafter, the portions of the tenth embodiment of the present invention different from the fifth embodiment will be described with reference to FIGS. It explains using.

  At time t <b> 3, the control unit 23 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, the time Tp1 set by the first time setting means 15 is set by the first pulse condition setting means 17 until the time t4 when the predetermined time Tc set by the time setting means 14 reaches, is set to the workpiece 6. The time Tp2 set by the second time setting means 16 is supplied at the wire feed speed Pw1, and the pulse-like supply is repeated to repeat the supply at the wire feed speed Pw2 set by the second pulse condition setting means 18. In addition to controlling the wire feeding means 7, the laser apparatus 1 is controlled so as to continue irradiating the welding position of the workpiece 6 with the laser beam 5.

  At time t4, the control unit 23 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  Even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the laser output at the predetermined time Tc is set to be equal to or less than the set value before stopping the power supply, the same result is obtained. can get.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, each of the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the laser output at the predetermined time Tc. The set value may be changed as the predetermined time Tc elapses.

  Thus, in the tenth embodiment of the present invention, the same effects as in the fifth embodiment can be obtained by using the configuration and operation shown in FIGS. 11 and 16.

(Embodiment 11)
The configuration of the eleventh embodiment of the present invention is the same as that of the sixth embodiment, and includes welding start signal Ws, wire feed speed signal Wf, welding output signal Ia, current detection signal Sd, and laser output signal Pw. Is a timing chart similar to FIG. 16 of the tenth embodiment.

  In the eleventh embodiment of the present invention, the welding wire 9 is continuously supplied during the period of the predetermined time Tc set by the time setting means 14 of the sixth embodiment shown in FIGS. 13 and 12, and the laser beam 5 is pulsed. Irradiation is performed in such a manner that the welding wire 9 is supplied in a pulse shape during a predetermined time Tc and the laser beam 5 is continuously irradiated. The configuration and operation similar to those of the sixth embodiment are performed. The same reference numerals are given to the timings shown, and the same operational effects are given, and detailed description thereof is omitted. Hereinafter, the portions of the eleventh embodiment of the present invention different from the sixth embodiment will be described with reference to FIG. This will be described with reference to FIG.

  At time t3, the control unit 24 turns off the welding output signal Ia to the welding power source device 21 at the timing when the welding activation signal Ws is turned off. The welding power supply device 21 stops the power supplied to the welding wire 9 with the OFF timing of the welding output signal Ia, and the welding wire 9 is connected to the workpiece 6 until the time t4 when the predetermined time Tc set by the time setting means 14 has elapsed. The time Tp1 set by the first time setting means 15 is supplied at the wire feed speed Pw1 set by the first pulse condition setting means 17, and the time Tp2 set by the second time setting means 16 is the second pulse condition. The wire feeding means 7 is controlled so as to continue the pulse-like supply that repeats the supply at the wire feeding speed Pw2 set by the setting means 18.

  Further, the control unit 24 controls the laser device 1 so that the laser beam 5 is continuously irradiated to the welding position of the workpiece 6 with the OFF timing of the welding activation signal Ws from the welding activation unit 13.

  At time t4, the control unit 24 operates to stop the laser beam 5 by controlling the laser device 1 and to stop the welding wire 9 by controlling the wire control unit 7.

  Even if the setting of the first pulse condition setting means 17 is set to 0, or the setting of the second pulse condition setting means 18 and the laser output at the predetermined time Tc is set to be equal to or less than the set value before stopping the power supply, the same result is obtained. can get.

  Similarly to the first embodiment shown in FIG. 6, the first time setting means 15 and the second time setting means 16 are the frequency setting means 30 and the pulse ratio setting means 31 so as to set the pulse-like output. However, similar results can be obtained.

  Further, each of the first time setting means 15, the second time setting means 16, the frequency setting means 30, the pulse ratio setting means 31, the first pulse condition setting means 17, the second pulse setting means 18, and the laser output at the predetermined time Tc. The set value may be changed as the predetermined time Tc elapses.

  Thus, in the tenth embodiment of the present invention, the same effects as in the sixth embodiment can be obtained by using the configuration and operation shown in FIGS. 13 and 16.

(Embodiment 12)
FIG. 17 is a block diagram showing a configuration of a composite welding apparatus in Embodiment 12 of the present invention. FIG. 18 is a timing chart showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in the configuration of the twelfth embodiment of the present invention. .

  In the twelfth embodiment of the present invention, the welding wire 9 is pulsed during the predetermined time Tc set by the time setting means 14 of the first embodiment shown in FIGS. 1 and 2 and the seventh embodiment shown in FIG. Or the control means 12 controls to irradiate the laser beam 5 in a pulsed manner. During the predetermined time Tc, the welding wire 9 is supplied in a pulsed manner and the laser beam 5 is pulsed. Is controlled by the control means 29 so that the same configuration as in the first and seventh embodiments, the timing indicating the same operation, and the same operational effects are provided. The same reference numerals are assigned and detailed description is omitted, and the operation of the seventh embodiment of the present invention that is different from the first embodiment will be described below with reference to FIGS. 17 and 18.

  At time t3, the control unit 29 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, until the predetermined time Tc set by the time setting means 14 reaches t4, the time Tp1 set by the first time setting means 15 at the welding position of the workpiece 6 is the first pulse condition setting means. Irradiation is performed with the laser output Pw1 set at 17, and the time Tp2 set by the second time setting unit 16 continues the pulsed output that repeats irradiation with the laser output Pw2 set by the second pulse condition setting unit 18 While controlling the laser device 1, the time Tp3 set by the third time setting means 25 is supplied to the workpiece 6 with the welding wire 9 at the wire feed speed Pw3 set by the third pulse condition setting means 27, The time Tp4 set by the fourth time setting means 26 continues the pulse-like supply that repeats the supply at the wire feed speed Pw4 set by the fourth pulse condition setting means 28. Controlling the so that the wire feeding means 7.

  At time t4, the control unit 29 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  Even if the first pulse condition setting means 17 and the third pulse condition setting means 27 are set to 0, the second pulse condition setting means 18 and the fourth pulse condition setting means 28 are set before the power supply is stopped. Similar results can be obtained even if the value is less than or equal to the value.

  As shown in FIG. 19, the first time setting means 15 and the second time setting means 16 are the first frequency setting means 36 and the first pulse ratio setting means 37, and the third time setting means 25 and the fourth time are set. The same result can be obtained even if the setting means 26 is the second frequency setting means 38 and the second pulse ratio setting means 39 to set the pulse-like output.

  Further, the first time setting means 15, the second time setting means 16, the third time setting means 25, the fourth time setting means 26, the first frequency setting means 36, the second frequency setting means 38, and the first pulse ratio setting means. 37, the second pulse ratio setting means 39, the first pulse condition setting means 17, the second pulse setting means 18, the third pulse condition setting means 27, and the fourth pulse condition setting means 28 are set to the elapsed time Tc. You may make it change with.

  Further, as shown in FIG. 26, the first time setting means 15, the second time setting means 16, the first frequency setting means 36, the first pulse ratio setting means 37, the first pulse condition setting means 17, the second pulse setting. Each set value of the means 18, the third time setting means 25, the fourth time setting means 26, the second frequency setting means 38, the second pulse ratio setting means 39, the third pulse condition setting means 27, the fourth pulse condition setting. Any of the setting values of the means 28 may be set to synchronize.

  As described above, in the twelfth embodiment of the present invention, the power supplied to the welding wire is stopped at the end of welding, the welding wire is supplied in a pulse shape for a predetermined time, and the laser beam is output in a pulse shape. By stopping the light and the welding wire, a stable welding quality can be obtained at the start of the welding of the composite welding, and at the end of the welding, a crater dent and excessive growth can be prevented to ensure a sufficient penetration.

(Embodiment 13)
FIG. 20 is a block diagram showing a configuration of a composite welding apparatus in Embodiment 13 of the present invention. FIG. 21 is a timing chart showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in the configuration of the thirteenth embodiment of the present invention. .

  In the thirteenth embodiment of the present invention, the welding wire 9 is continuously supplied in a pulsed manner for the period of the predetermined time Tc set by the time setting means 14 of the twelfth embodiment shown in FIG. 17 and FIG. The control means 29 is controlled so as to irradiate in the form of pulses. During the period of the predetermined time Tc1 set by the first predetermined time setting means 19, the welding wire 9 continues to be supplied in pulses and the laser beam 5 , The supply of the welding wire 9 is stopped after a predetermined time Tc1 has elapsed, and the laser beam 5 is controlled to be irradiated in a pulsed manner during the predetermined time Tc2 set by the second predetermined time setting means 20. The control is performed by the means 32, and the same configuration as in the twelfth embodiment, the timing indicating the same operation, and the same operational effects are given the same reference numerals and the detailed description is omitted. And, following, Embodiment 12 with different parts of the exemplary form 13 of the present invention, its operation will be described with reference to FIGS. 20 and 21.

  At time t3, the control unit 32 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws from the welding activation unit 13. Thereafter, until the time t5 when the predetermined time Tc1 set by the first predetermined time setting means 19 reaches, the time Tp1 set by the first time setting means 15 at the welding position of the workpiece 6 is the first pulse. Irradiation is performed with the laser output Pw1 set by the condition setting means 17, and the pulse-like output is repeated for the time Tp2 set by the second time setting means 16 to be irradiated with the laser output Pw2 set by the second pulse condition setting means 18. The time Tp3 set by the third time setting means 25 is the wire feed speed Pw3 set by the third pulse condition setting means 27 while the laser device 1 is controlled so as to continue the process. The time Tp4 that is supplied and set by the fourth time setting means 26 repeats the supply at the wire feed speed Pw4 set by the fourth pulse condition setting means 28. Controlling the wire feed means 7 so as to continue the supply.

  At time t5, the control means 32 stops the supply of the welding wire 9 by controlling the wire control means 7, and further until time t4 when the predetermined time Tc2 set by the second predetermined time setting means 20 reaches. By controlling the laser device 1, the laser beam 5 is continuously emitted in a pulse shape, and at time t <b> 4, the control unit 32 operates to stop the output of the laser beam 5 by controlling the laser device 1.

  Even if the first pulse condition setting means 17 and the third pulse condition setting means 27 are set to 0, the second pulse condition setting means 18 and the fourth pulse condition setting means 28 are set before the power supply is stopped. Similar results can be obtained even if the value is less than or equal to the value.

  Similarly to the twelfth embodiment shown in FIG. 19, the first time setting means 15 and the second time setting means 16 are the first frequency setting means 36 and the first pulse ratio setting means 37, and the third time setting means. 25 and the fourth time setting means 26 are the second frequency setting means 38 and the second pulse ratio setting means 39, and the same result can be obtained by setting the pulse-like output.

  Further, the first time setting means 15, the second time setting means 16, the third time setting means 25, the fourth time setting means 26, the first frequency setting means 36, the second frequency setting means 38, and the first pulse ratio setting means. 37, the second pulse ratio setting means 39, the first pulse condition setting means 17, the second pulse setting means 18, the third pulse condition setting means 27, and the fourth pulse condition setting means 28 are set to the elapsed time Tc. You may make it change with.

  Similarly to the twelfth embodiment shown in FIG. 26, the first time setting means 15, the second time setting means 16, the first frequency setting means 36, the first pulse ratio setting means 37, and the first pulse condition setting means 17 , Each set value of the second pulse setting means 18, the third time setting means 25, the fourth time setting means 26, the second frequency setting means 38, the second pulse ratio setting means 39, the third pulse condition setting means 27, You may set so that either of each setting value of the 4th pulse condition setting means 28 may synchronize.

  As described above, in the thirteenth embodiment, the power supplied to the welding wire is stopped at the end of welding, the welding wire is supplied in a pulse shape for the first predetermined time, and the laser beam is irradiated in a pulse shape to obtain the second. By stopping the laser beam after a lapse of a predetermined time, stable welding quality can be obtained at the start of composite welding, and crater dents and overgrowth can be prevented at the end of welding to ensure sufficient penetration.

(Embodiment 14)
FIG. 22 is a block diagram showing the configuration of the composite welding apparatus in Embodiment 14 of the present invention. The timing diagram showing the welding start signal Ws, the wire feed speed signal Wf, the welding output signal Ia, the current detection signal Sd, and the laser output signal Pw in the configuration of the fourteenth embodiment of the present invention is shown in the twelfth embodiment. This is the same as FIG.

  In the fourteenth embodiment of the present invention, the wire feeding means 7 is controlled by the control means 29 in the feeding operation of the welding wire 9 of the twelfth embodiment shown in FIGS. The means 7 is controlled by the welding power source device 21 and the welding power source device 21 is controlled by the control means 33. The configuration, the timing showing the same operation as in the twelfth embodiment, and the same action The parts having the effects are denoted by the same reference numerals, and detailed description thereof is omitted. Hereinafter, the operations of the fourteenth embodiment of the present invention different from those of the twelfth embodiment will be described with reference to FIGS. I will explain.

  First, at time t1, the control unit 33 outputs the welding output signal Ia to the welding power source device 21 with the ON timing of the welding activation signal Ws. When receiving the welding output signal Ia, the welding power source device 21 supplies welding power to the welding wire 9 and controls the wire feeding means 7 with the wire feeding speed signal Wf0 to weld toward the workpiece 6. The wire 9 is fed.

  Next, at time t2, the welding power source device 21 outputs a current detection signal Sd indicating that the welding current has flowed to the control means 35, and at the timing of turning on the current detection signal Sd, the wire feed speed signal Wf1 is used for the wire. The feeding means 7 is controlled. The control means 33 immediately outputs the laser output signal Pw to the laser device 1 at the ON timing of the current detection signal Sd, and performs composite welding by irradiating the workpiece 6 with the laser beam 5.

  Further, at time t3, the control means 33 turns off the welding output signal Ia to the welding power source device 21 at the timing when the welding activation signal Ws is turned off. The welding power supply device 21 stops the power supplied to the welding wire 9 with the OFF timing of the welding output signal Ia, and the welding wire 9 is connected to the workpiece 6 until the time t4 when the predetermined time Tc set by the time setting means 14 has elapsed. The time Tp3 set by the third time setting means 25 is supplied at the wire feed speed Pw3 set by the third pulse condition setting means 27, and the time Tp4 set by the fourth time setting means 26 is the fourth pulse condition. The supply in the form of pulses that repeats the supply at the wire feed speed Pw4 set by the setting means 28 is continued.

  In addition, the control means 33 has the time Tp1 set by the first time setting means 15 at the welding position of the workpiece 6 with the OFF timing of the welding activation signal Ws from the welding activation means 13, as the first time setting means 15. Irradiation is performed with the laser output Pw1 set by the pulse condition setting unit 17, and the time Tp2 set by the second time setting unit 16 repeats irradiation with the laser output Pw2 set by the second pulse condition setting unit 18. The laser device 1 is controlled to continue the output.

  At time t4, the control unit 33 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  Even if the first pulse condition setting means 17 and the third pulse condition setting means 27 are set to 0, the second pulse condition setting means 18 and the fourth pulse condition setting means 28 are set before the power supply is stopped. Similar results can be obtained even if the value is less than or equal to the value.

  Similarly to the twelfth embodiment shown in FIG. 19, the first time setting means 15 and the second time setting means 16 are the first frequency setting means 36 and the first pulse ratio setting means 37, and the third time setting means. 25 and the fourth time setting means 26 are the second frequency setting means 38 and the second pulse ratio setting means 39, and the same result can be obtained by setting the pulse-like output.

  Further, the first time setting means 15, the second time setting means 16, the third time setting means 25, the fourth time setting means 26, the first frequency setting means 36, the second frequency setting means 38, and the first pulse ratio setting means. 37, the second pulse ratio setting means 39, the first pulse condition setting means 17, the second pulse setting means 18, the third pulse condition setting means 27, and the fourth pulse condition setting means 28 so as to change as the predetermined time Tc elapses. It may be.

  Further, as shown in FIG. 26, the first time setting means 15, the second time setting means 16, the first frequency setting means 36, the first pulse ratio setting means 37, the first pulse condition setting means 17, the second pulse setting. Each set value of the means 18, the third time setting means 25, the fourth time setting means 26, the second frequency setting means 38, the second pulse ratio setting means 39, the third pulse condition setting means 27, the fourth pulse condition setting. Any of the setting values of the means 28 may be set to synchronize.

  Thus, in the fourteenth embodiment of the present invention, the same effect as in the twelfth embodiment can be obtained by using the configuration shown in FIG.

(Embodiment 15)
FIG. 23 is a block diagram showing a configuration of a composite welding apparatus in Embodiment 15 of the present invention. FIG. 24 is a timing chart showing a welding start signal Ws, a wire feed speed signal Wf, a welding output signal Ia, a current detection signal Sd, and a laser output signal Pw in the configuration of the fifteenth embodiment of the present invention. .

  In the fifteenth embodiment of the present invention, feeding of the welding wire 9 is started at the ON timing of the current detection signal Sd indicating that the welding current of the twelfth embodiment shown in FIG. 17 flows, and the welding start signal Ws is turned off. The control means 29 controls the supply of the welding wire 9 to stop at the timing, and the control means 34 controls the supply of the welding wire 9 to stop at the OFF timing of the welding activation signal Ws. The same configurations as those of the twelfth embodiment, the timings indicating the same operations, and the same operational effects are denoted by the same reference numerals, and detailed description thereof is omitted. The operation of the fifteenth embodiment of the invention will be described with reference to FIGS.

  At time t3, the control unit 34 controls the welding power source device 10 to stop the power supplied to the welding wire 9 with the OFF timing of the welding activation signal Ws. Thereafter, until the time t4 when the predetermined time Tc reaches, the time Tp1 set by the first time setting means 15 to the workpiece 6 is the wire feed speed Pw1 set by the first pulse condition setting means 17. The time Tp2 set by the second time setting means 16 is supplied to the wire feeding means 7 so as to continue the pulse-like supply that repeats the supply at the wire feeding speed Pw2 set by the second pulse condition setting means 18. While controlling, the laser apparatus 1 is controlled to continue irradiating the welding position of the workpiece 6 with the laser beam 5.

  At time t <b> 4, the control unit 34 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  Even if the first pulse condition setting means 17 and the third pulse condition setting means 27 are set to 0, the second pulse condition setting means 18 and the fourth pulse condition setting means 28 are set before the power supply is stopped. Similar results can be obtained even if the value is less than or equal to the value.

  Similarly to the twelfth embodiment shown in FIG. 19, the first time setting means 15 and the second time setting means 16 are the first frequency setting means 36 and the first pulse ratio setting means 37, and the third time setting means. 25 and the fourth time setting means 26 are the second frequency setting means 38 and the second pulse ratio setting means 39, and the same result can be obtained by setting the pulse-like output.

  Further, the first time setting means 15, the second time setting means 16, the third time setting means 25, the fourth time setting means 26, the first frequency setting means 36, the second frequency setting means 38, and the first pulse ratio setting means. 37, the second pulse ratio setting means 39, the first pulse condition setting means 17, the second pulse setting means 18, the third pulse condition setting means 27, and the fourth pulse condition setting means 28 are set to the elapsed time Tc. You may make it change with.

  Similarly to the fourteenth embodiment shown in FIG. 26, the first time setting means 15, the second time setting means 16, the first frequency setting means 36, the first pulse ratio setting means 37, and the first pulse condition setting means 17 , Each set value of the second pulse setting means 18, the third time setting means 25, the fourth time setting means 26, the second frequency setting means 38, the second pulse ratio setting means 39, the third pulse condition setting means 27, You may set so that either of each setting value of the 4th pulse condition setting means 28 may synchronize.

  Thus, in the fifteenth embodiment of the present invention, the same effect as in the twelfth embodiment can be obtained by using the configuration shown in FIG.

(Embodiment 16)
FIG. 25 is a block diagram showing the configuration of the composite welding apparatus in Embodiment 16 of the present invention. Further, in the configuration of the sixteenth embodiment of the present invention, the timing chart showing the welding start signal Ws, the wire feed speed signal Wf, the welding output signal Ia, the current detection signal Sd, and the laser output signal Pw is shown in the fifteenth embodiment. This is the same as FIG.

  In the sixteenth embodiment of the present invention, the wire feeding means 7 is controlled by the control means 29 in the feeding operation of the welding wire 9 according to the fifteenth embodiment shown in FIGS. The means 7 is controlled by the welding power source device 21 and the welding power source device 21 is controlled by the control means 35. The configuration, the timing showing the same operation as in the fifteenth embodiment, and the same action The parts having the effects are denoted by the same reference numerals, and detailed description thereof is omitted. Hereinafter, the operations of the parts of the sixteenth embodiment different from the fifteenth embodiment will be described with reference to FIGS. 25 and 24. I will explain.

  At time t3, the control unit 35 turns off the welding output signal Ia to the welding power source device 21 at the timing when the welding activation signal Ws is turned off. The welding power supply device 21 stops the power supplied to the welding wire 9 with the OFF timing of the welding output signal Ia, and the welding wire 9 is connected to the workpiece 6 until the time t4 when the predetermined time Tc set by the time setting means 14 has elapsed. The time Tp3 set by the third time setting means 25 is supplied at the wire feed speed Pw3 set by the third pulse condition setting means 27, and the time Tp4 set by the fourth time setting means 26 is the fourth pulse condition. The supply in the form of pulses that repeats the supply at the wire feed speed Pw4 set by the setting means 28 is continued.

  Further, the control means 35 has the first time setting means 15 set the time Tp1 at the welding position of the workpiece 6 with the OFF timing of the welding start signal Ws from the welding start means 13 for the first time Tp1. Irradiation is performed with the laser output Pw1 set by the pulse condition setting unit 17, and the time Tp2 set by the second time setting unit 16 repeats irradiation with the laser output Pw2 set by the second pulse condition setting unit 18. The laser device 1 is controlled to continue the output.

  At time t <b> 4, the control unit 35 operates to stop the laser beam 5 by controlling the laser device 1 and stop the welding wire 9 by controlling the wire control unit 7.

  Even if the first pulse condition setting means 17 and the third pulse condition setting means 27 are set to 0, the second pulse condition setting means 18 and the fourth pulse condition setting means 28 are set before the power supply is stopped. Similar results can be obtained even if the value is less than or equal to the value.

  Similarly to the twelfth embodiment shown in FIG. 19, the first time setting means 15 and the second time setting means 16 are the first frequency setting means 36 and the first pulse ratio setting means 37, and the third time setting means. 25 and the fourth time setting means 26 are the second frequency setting means 38 and the second pulse ratio setting means 39, and the same result can be obtained by setting the pulse-like output.

  Further, the first time setting means 15, the second time setting means 16, the third time setting means 25, the fourth time setting means 26, the first frequency setting means 36, the second frequency setting means 38, and the first pulse ratio setting means. 37, the second pulse ratio setting means 39, the first pulse condition setting means 17, the second pulse setting means 18, the third pulse condition setting means 27, and the fourth pulse condition setting means 28 are set to the elapsed time Tc. You may make it change with.

  Similarly to the fourteenth embodiment shown in FIG. 26, the first time setting means 15, the second time setting means 16, the first frequency setting means 36, the first pulse ratio setting means 37, and the first pulse condition setting means 17 , Each set value of the second pulse setting means 18, the third time setting means 25, the fourth time setting means 26, the second frequency setting means 38, the second pulse ratio setting means 39, the third pulse condition setting means 27, You may set so that either of each setting value of the 4th pulse condition setting means 28 may synchronize.

  Thus, in the sixteenth embodiment of the present invention, the same effect as in the fifteenth embodiment can be obtained by using the configuration shown in FIG.

In the present invention, a solid-state laser device such as a semiconductor laser, a YAG laser, a fiber laser, and a disk laser, or a gas laser device such as a CO 2 laser may be used as the laser device. The output of the solid state laser or gas laser may be a pulsed output.

Further, the present invention may use a MAG welding power supply device or a MIG welding power supply device as the welding power supply device, and uses CO 2 or a mixed gas of CO 2 and argon as the shielding gas of the MAG welding device, As a shielding gas for the MIG welding apparatus, argon gas or an argon mixed gas to which a small amount of CO 2 and O 2 is added may be used. The output of the MAG welding apparatus or MIG welding apparatus may be a pulsed output. Then, the laser irradiation position on the welding arc may be in the vicinity of the position where the welding wire hits the workpiece, and may be in the vicinity of the front in the welding direction of the molten pool generated by the arc generating means.

  Furthermore, the present invention may use a welding robot apparatus provided with an articulated manipulator as a control means.

  As described above, the composite welding apparatus and the composite welding method according to the present invention obtain stable welding quality at the start of welding of composite welding, and prevent crater dents and overgrowth at the end of welding to ensure sufficient penetration. It is useful as a composite welding apparatus and a composite welding method.

DESCRIPTION OF SYMBOLS 1 Laser generating means 2 Laser oscillator 3 Laser transmission means 4 Condensing optical system 5 Laser beam 6 To-be-welded object 7 Wire feeding means 8 Torch 9 Welding wire 10 Welding power supply device 11 Welding arc 12 Control means 13 Welding start means 14 Time setting Means 15 First time setting means 16 Second time setting means 17 First pulse condition setting means 18 Second pulse condition setting means 19 First predetermined time setting means 20 Second predetermined time setting means 21, 22, 23, 24, 29 , 32, 33, 34, 35 Control means 25 Third time setting means 26 Fourth time setting means 27 Third pulse condition setting means 28 Fourth pulse condition setting means 30 Frequency setting means 31 Pulse ratio setting means 36 First frequency setting Means 37 First pulse ratio setting means 38 Second frequency setting means 39 Second pulse ratio setting means Ia Welding Force signal Pw Laser output signal Pw1, Pw2 Laser output or wire feed speed Pw3, Pw4 Wire feed speed Sd Current detection signal Tb, Tc Predetermined time Tc1 First predetermined time Tc2 Second predetermined time Ti Free running time Tp1 First period Tp2 2nd period Tp3 3rd period Tp4 4th period Ts No load voltage time Va Welding voltage Vnol No load voltage Vs Short circuit voltage Vth1, Vth2 Intermediate voltage Wf, Wf0, Wf1 Wire feed speed signal Ws Welding start signal

Claims (9)

  1. In a composite welding apparatus having a laser welding means and an arc welding means, and simultaneously welding the welding positions of the workpieces,
    Wire feeding means for feeding a welding wire;
    A welding power source device for generating an arc between the welding wire and the welding position;
    A laser device for generating a laser beam and irradiating the welding position;
    Control means for controlling the wire feeding means, the welding power source device and the laser device;
    The control means stops the power supplied to the welding wire by controlling the welding power source device at the end of welding, and further pulses the welding wire by controlling the wire feeding means for a first predetermined time. A composite welding apparatus that stops the output of the laser beam and the feeding of the welding wire after being fed in a shape.
  2. In a composite welding apparatus having a laser welding means and an arc welding means, and simultaneously welding the welding positions of the workpieces,
    A welding power source device for controlling a wire feeding means for feeding a welding wire and generating an arc between the welding wire and the welding position;
    A laser device for generating a laser beam and irradiating the welding position;
    Control means for controlling the laser device and the welding power source device;
    The control means stops the power supplied to the welding wire by controlling the welding power source device at the end of welding, and further pulses the welding wire by controlling the wire feeding means for a first predetermined time. A composite welding apparatus that stops the output of the laser beam and the feeding of the welding wire after being fed in a shape.
  3. The control means stops the power supplied to the welding wire at the end of welding, and then feeds the welding wire in a pulse shape by controlling the wire feeding means or the welding power source device for the first predetermined time. In addition, the laser beam is output by controlling the laser device, the feeding of the welding wire is stopped after the first predetermined time has passed, and the laser beam output is stopped after the second predetermined time has passed. The composite welding apparatus according to claim 1 or 2, wherein
  4. The control means stops power supply to the welding wire at the end of welding, and then feeds the welding wire for the first predetermined time, and the first predetermined time and the second predetermined time. 4. The composite welding apparatus according to claim 1, wherein at least one of the laser beam output and the laser beam is set to a value different from that before the power supply to the welding wire is stopped. 5.
  5. The control means is configured to supply the welding wire in a pulsed manner, a first period in which the welding wire is fed at a predetermined feeding speed, and zero or a feeding speed lower than the first period. The composite welding apparatus according to any one of claims 1 to 4, wherein the control is performed so as to repeat the second period of feeding.
  6. The control means controls at least one of a pulsed feeding frequency, a pulse ratio, and a feeding speed of the welding wire so as to change with the passage of the first predetermined time or the second predetermined time. The composite welding apparatus according to any one of claims 1 to 5, wherein
  7. As a laser device, semiconductor lasers, YAG lasers fiber lasers, hybrid welding apparatus according to claims 1 to use the gas laser device such as a solid-state laser apparatus or a CO 2 laser, such as a disk laser to claim 6.
  8. The composite welding apparatus according to any one of claims 1 to 7, wherein a consumable electrode welding power supply apparatus such as a CO 2 welding power supply apparatus, a MAG welding power supply apparatus, or a MIG welding power supply apparatus is used as the welding power supply apparatus.
  9. The composite welding apparatus according to any one of claims 1 to 8, wherein a welding robot apparatus including an articulated manipulator is used as the control means.
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