KR102405306B1 - Welding control apparatus with crater filling function - Google Patents

Abstract

The present invention is compatible with the existing welding body, the wire feeder, and the cable connecting the welding body and the wire feeder without modifying the control circuit of the welding body and the wire feeder or adding a separate operation line, and a welding torch It is to provide a welding control device capable of crater processing that can set current/voltage and current/voltage for crater welding from the wire feeder adjacent to the . The present invention for this purpose is disposed in the welding main body, the welding main body control unit for controlling the operating state of the welding main body; and a wire feeder control unit disposed in the wire feeder, controlling the operating state of the wire feeder, and transmitting a user input signal to the welding body through a single cable; including, wherein the wire feeder control unit comprises: A first connector to which one end of a single cable is connected, a current control signal and a crater current control signal are generated according to a user input signal, and the generated current control signal or the crater current control signal is applied to the first of the single cable. A first adjustment circuit outputting a signal line, a main voltage adjustment signal and a crater voltage adjustment signal according to a user input signal are generated, and the generated main voltage adjustment signal or the crater voltage adjustment signal is used as a second signal of the single cable Disclosed is a feature comprising a second regulating circuit outputting to a line.

Description

Welding control device capable of cratering {WELDING CONTROL APPARATUS WITH CRATER FILLING FUNCTION}

The present invention relates to a welding control device capable of cratering, and more particularly, it is compatible with a welding body, a wire feeder, and a cable connecting the welding body and the wire feeder, and the current/voltage seen from the welding torch and the adjacent wire feeder And it relates to a welding control device capable of crater processing capable of setting the crater current / voltage.

In general, the welding machine generates an electric arc between the continuously supplied consumable welding rod and the base material to be welded, and at the same time ejects an assist gas such as carbon dioxide gas through the gas nozzle formed at the tip of the welding torch to push the air around the welding part to block it. This prevents oxidation and nitridation of the weld metal to form a good weld.

Crater refers to a phenomenon in which the welding end is dented like a crater on the moon. When welding is performed with a high current, the welding progressing part melts the base material and the molten material flows in the opposite direction to the welding progress, so the end part of the welding is The base material is dented, and if the welding current is cut off in this state, the welded portion becomes a dented welding defect state.

In order to minimize the occurrence of such craters, the operator applies a relatively lower voltage/current than the voltage/current applied during the welding process of this member at the end of welding to perform correction and supplemental welding. This is called Crater Filling.

In general, the current/voltage output during main member welding is referred to as main current/main voltage or primary current/voltage, and the current/voltage output during crater welding processing is referred to as crater current/crater voltage or secondary current/voltage.

Basically, the crater treatment function uses a relatively high current/voltage to perform welding, and at the end of welding, it uses a relatively low crater current/voltage to fill the crater, thereby minimizing the crater phenomenon and forming a good weld. .

However, the wire feeder of the conventional welding machine is used by controlling the welding current/voltage, and the crater on-off function and the crater current/voltage control function are attached to the welding body, so that the crater on-off and crater Since you have to adjust the current/voltage to use it, a lot of time and inconvenience occur if you have to adjust it repeatedly.

In most industrial sites, the distance between the welding body and the wire feeder is several tens of meters or more. In particular, in the shipyard, the welding body is placed in a remote location within the factory, and the worker enters the workshop with only the wire feeder and the welding torch to perform work. In such a situation, manipulating the volume of the crater on-off switch and crater current/voltage placed on the welding body several tens of meters away greatly reduces work efficiency.

In order to improve this problem, the crater processing function installed in the welding body can be executed directly from the wire feeder.

However, in order to arrange the crater treatment function installed in the welding body to the wire feeder, it is inevitable to modify the control circuit of the existing welding body and wire feeder currently used, and according to the modification of the control circuit, more control lines are required. In addition, there is a problem that a separate operation line of the cable connecting the welding body and the wire feeder needs to be added, corrected, and supplemented, and the inconvenience of compatibility with the welding body and circuit modification for power supply must be endured. There were many difficulties and limitations in using the crater handling function.

Republic of Korea Patent Publication No. 2014-0024184 (published on February 28, 2014)

The object of the present invention for solving the above problems is compatible with the welding body, the wire feeder, and the cable connecting the welding body and the wire feeder, and the current/voltage and crater current/voltage seen from the wire feeder adjacent to the welding torch. It is to provide a welding control device capable of crater processing that can set

A welding control device capable of crater processing according to an embodiment of the present invention for solving the above-described problems includes: a welding body control unit disposed on a welding body, the welding body control unit for controlling an operating state of the welding body; and a wire feeder control unit disposed in the wire feeder, controlling the operating state of the wire feeder, and transmitting a user's input signal to the welding body control unit through a single cable; including, wherein the wire feeder control unit includes: , a first connector to which one end of the single cable is connected, and a current control signal and a crater current control signal according to a user input signal are generated, and the generated current control signal or the crater current control signal is applied to the single cable. A first adjustment circuit outputting a first signal line, and a main voltage adjustment signal and a crater voltage adjustment signal according to a user input signal are generated, and the generated main voltage adjustment signal or the crater voltage adjustment signal is applied to the first control circuit of the single cable. and a second adjustment circuit outputting the two signal lines.

In the welding control apparatus capable of crater processing according to this embodiment, the welding main body control unit generates an adjustment signal for crater processing input from the main control unit for controlling the operation state of the welding main body and the single cable and a crater control unit for outputting the generated adjustment signal to the main control unit.

In the welding control apparatus capable of crater processing according to this embodiment, the crater control unit is configured to determine whether the current adjustment signal is the current voltage adjustment signal or the current adjustment signal based on the direction of the adjustment signal received from the first signal line. It may further include a signal determining unit having a first signal determining unit and a second signal determining unit for determining whether a crater voltage adjustment signal or a crater current adjustment signal is based on the direction of the adjustment signal received from the second signal line.

In the welding control apparatus capable of crater processing according to the present embodiment, the signal determining unit may determine that the adjustment signal received from the first signal line has a first direction as the current voltage adjustment signal, and the first When the adjustment signal received from the signal line has a second direction opposite to the first direction, it can be determined as the current adjustment signal, and the adjustment signal received from the second signal line is a third direction parallel to the first direction. When it has a direction, it can be determined as a crater voltage adjustment signal, and when the adjustment signal received from the second signal line has a fourth direction opposite to the third direction, it can be determined as a crater current adjustment signal.

In the welding control apparatus capable of crater processing according to the present embodiment, the crater control unit, each of the main voltage adjustment signal and the main current adjustment signal for main welding with respect to the adjustment signal input from the first signal discrimination unit For the adjustment signal input from the main welding adjustment signal generating unit for generating a magnitude signal for , and outputting the generated main voltage adjustment signal and the main current adjustment signal to the main control unit, and the second signal determining unit Further comprising a crater welding adjustment signal generating unit that generates a magnitude signal for each of the crater voltage adjustment signal and the crater current adjustment signal, and outputs the generated crater voltage adjustment signal and the crater current adjustment signal to the main control unit can

In the welding control apparatus capable of crater processing according to this embodiment, the first adjustment circuit has one end connected to a common line and the other end connected to a ground line, so that the excited power is output to the first signal line A first resistor, a first diode connected to the first signal line to control an output according to the first resistor, and turned on when the current adjustment signal is transmitted according to a user input signal, and the first resistor are connected in parallel So that one end is connected to the common line and the other end is connected to the ground line, the first signal is connected in parallel to a second resistor for outputting the excited power to the first signal line and the first diode. It may include a second diode connected to the line to regulate the output according to the second resistor, and to be turned on when a crater current adjustment signal is transmitted according to a user input signal.

In the welding control apparatus capable of crater processing according to this embodiment, the second adjustment circuit has one end connected to a common line and the other end connected to a ground line, so that the excited power is output to the second signal line A third resistor is connected to the third signal line to control the output according to the third resistor, and a third diode is turned on when the current voltage adjustment signal is transmitted according to a user input signal, and the third resistor is connected in parallel. So that one end is connected to the common line and the other end is connected to the ground line, the second signal is connected in parallel to a fourth resistor for outputting the excited power to the second signal line and the third diode. It may include a fourth diode connected to the line to regulate the output according to the third resistor, and to be turned on when a crater voltage adjustment signal is transmitted according to a user input signal.

In the welding control apparatus capable of crater processing according to this embodiment, the wiper control unit includes an inching control circuit for outputting an inching control signal to a third signal line of the single cable, and a torch control signal to the single cable a torch control circuit for outputting a fourth signal line of It may further include at least one of the gas valve control circuits for

According to the present invention, regardless of the distance between the welding body and the wire feeder, it is possible to freely set the volume control of the welding current/voltage and the crater welding current/voltage seen from the wire feeder adjacent to the operator, thereby greatly improving the welding quality and work efficiency. have.

According to the present invention, there is an advantage of very excellent compatibility with the welding body, the wire feeder, and the single cable connecting the same.

1 is an exemplary view of a welding machine to which a welding control device according to an embodiment of the present invention is applied.
2 is a block diagram of a welding control apparatus according to an embodiment of the present invention.
3 is a circuit configuration diagram of a wire feeder control unit according to an embodiment of the present invention.
4 is a circuit configuration diagram of a crater control unit according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention in which the above-described problems to be solved can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiments, the same names and reference numerals may be used for the same components, and an additional description thereof may be omitted.

1 is an exemplary view of a welding machine to which a welding control apparatus according to an embodiment of the present invention is applied, FIG. 2 is a configuration diagram of a welding control apparatus according to an embodiment of the present invention, and FIG. 3 is a welding control apparatus according to an embodiment of the present invention It is a circuit diagram of a wire feeder control unit, and FIG. 4 is a circuit diagram of a crater control unit according to an embodiment of the present invention.

1 to 4, the welding control apparatus according to an embodiment of the present invention sets the welding current/voltage and the crater welding current/voltage for crater processing in the wire feeder 20 adjacent to the welding torch 30. This can greatly improve welding quality and work efficiency. In addition, the welding control device according to the embodiment of the present invention is very excellent in compatibility with the welding main body 10, the wire feeder 20, and the single cable C1 connecting them.

Hereinafter, the current and voltage output during the welding of the main member are referred to as the main current and the main voltage, respectively, and the current and voltage output during the crater treatment are referred to as the crater current and the crater voltage.

First, as a welding machine to which the welding control device according to the present invention is applied, a carbon dioxide (CO2) welder may be applied. The carbon dioxide welder supplies a welding torch 30 for welding the base material by generating an arc, and a welding wire for generating the arc. It may include a welding main body 10 connected to the wire feeder 20, and the welding torch 30 and the wire feeder 20 to control the welding operation, and to generate and supply welding voltage and welding current, and also , it may include a single cable (C1) for connecting the welding main body 10, the wire feeder 20 and the welding torch 30.

The welding control apparatus according to the present invention may include a welding main body control unit 100 and a wire feeder control unit 400 .

The welding body control unit 100 may be disposed on the welding body 10 , and may control a series of welding operation states including the welding body 10 .

The welding body control unit 100 may include a main control unit 200 and a crater control unit 300 .

The main control unit 200 may be disposed on the welding body 10 , and may control the operating state of the welding body 10 .

The crater control unit 300 may generate an adjustment signal for crater processing input from the single cable C1 and transmit the generated adjustment signal to the main control unit 200 .

The crater control unit 300 may be integrally coupled to the main control unit 200 , that is, the main control unit 200 and the crater control unit 300 may be integrally manufactured on one substrate.

Of course, the crater control unit 300 may be manufactured independently from the main control unit 200 . That is, the crater control unit 300 may be separately manufactured and modularized, and the modularized crater control unit 300 may be selectively connected to and separated from the welding main body 10 via a cable.

The crater control unit 300 will be described later in detail.

The wire feeder control unit 400 is disposed in the wire feeder 20, controls the operating state of the wire feeder 20, and transmits the user's input signal to the welding body 10 through the single cable C1. .

The wire feeder control unit 400 may include a first connector 410 , a first adjustment circuit 420 , and a second adjustment circuit 430 .

The first connector 410 may have one end connected to the single cable C1, and may have a plurality of ports P1 to P8 corresponding to a plurality of control lines of the single cable C1.

For example, the first port P1 of the first connector 410 may be assigned as a common power port connected to the common line of the single cable C1, and the second port P2 and the third port P3 are the current or It can be used as a control signal port for connecting this voltage adjustment signal. In addition, the 4 port (P4) can be assigned as a port for transmitting the inching control signal, the 5 port (P5) can be assigned as a port for transmitting the torch control signal, the 6 port (P6) is a single cable It can be assigned to a port connected to the ground line of (C1). In addition, the 7 port (P7) or the 8 port (P8) may be assigned as a port for transmitting a motor control signal for the wire feeder. Also, although not shown, the 7 port P7 or the 8 port P8 may be allocated as a port for transmitting a gas valve control signal.

As such, the single cable C1 having a plurality of control lines, and the first connector 410 having a port corresponding to the control line of the single cable C1 are the welding body 10, the wire feeder 20 and the welding torch ( 30) can be appropriately changed according to the specifications.

The first adjustment circuit 420 generates the current adjustment signal and the crater current adjustment signal according to the user input signal, and outputs the generated current adjustment signal or the crater current adjustment signal to the first signal line of the single cable C1. can do. That is, the generated current control signal or crater current control signal may be output to the first signal line of the single cable C1 connected to the second port P2 of the first connector 410 .

Specifically, the first adjustment circuit 420 may include a first resistor R1 , a first diode D1 , a second resistor R2 , and a second diode D2 .

The first resistor R1 may have one end connected to the common line and the other end connected to the ground line, and the power excited by the application of the first resistor R1 may be output to the first signal line of the single cable C1. have.

The first diode D1 may be connected to the first signal line, regulate the output of the power to which the first resistor R1 is applied, and may be turned on when the current adjustment signal is transmitted according to the user's input signal.

The second resistor (R2) is connected in parallel to the first resistor (R1), one end is connected to the common line and the other end is connected to the ground line, and the power excited by the application of the second resistor (R2) is a single cable ( It may be output to the first signal line of C1).

The second diode D2 is connected in parallel to the first diode D1 and may be connected to the first signal line, regulates the output of the power to which the second resistor R2 is applied, and adjusts the crater current according to the user input signal. It can be turned on when a signal is transmitted.

As such, the first adjustment circuit 420 may output the current adjustment signal and the crater current adjustment signal according to the user input signal to the first signal line of the single cable C1 and transmit it to the crater control unit 300 .

The second adjustment circuit 430 generates the main voltage adjustment signal and the crater voltage adjustment signal according to the user input signal, and outputs the generated main voltage adjustment signal or the crater voltage adjustment signal to the second signal line of the single cable C1. can do. That is, the generated current voltage adjustment signal or crater voltage adjustment signal may be output to the second signal line of the single cable C1 connected to the third port P2 of the first connector 410 .

Specifically, the second adjustment circuit 430 may include a third resistor R3 , a third diode D3 , a fourth resistor R4 , and a fourth diode D4 .

The third resistor R3 may have one end connected to the common line and the other end connected to the ground line, and the power excited by the application of the third resistor R3 may be output to the second signal line of the single cable C1. have.

The third diode D3 may be connected to the second signal line, regulate the output of the power to which the third resistor R3 is applied, and may be turned on when this voltage adjustment signal is transmitted according to the user's input signal.

The fourth resistor R4 is connected in parallel to the third resistor R3, one end may be connected to the common line and the other end may be connected to the ground line, and the power excited by the application of the fourth resistor R4 is a single cable ( It may be output to the second signal line of C1).

The fourth diode D4 is connected in parallel to the third diode D3 and may be connected to the second signal line, regulates the output of the power to which the fourth resistor R4 is applied, and adjusts the crater voltage according to the user input signal. It can be turned on when a signal is transmitted.

As such, the first adjustment circuit 420 may output the current voltage adjustment signal and the crater voltage adjustment signal according to the user input signal to the second signal line of the single cable C1 and transmit it to the crater control unit 300 .

As such, the first adjustment circuit 420 for generating the current adjustment signal and the crater current adjustment signal according to the user input signal, and the second adjustment circuit for generating the main voltage adjustment signal and the crater voltage adjustment signal by the user input signal ( 430) through the wire feeder control unit 400 having, the operator can effectively control and set the current and voltage output during the main welding, as well as the crater current and voltage output during the crater treatment.

In addition, the wire feeder control unit 400 may be provided with a current control unit, a current voltage control unit, a crater current control unit, a crater voltage control unit, and a state display unit for displaying the adjustment state. This main current adjusting unit, main voltage adjusting unit, crater current adjusting unit, and crater voltage adjusting unit may be provided as a rotary volume switch type, and the operator is a volume switch type main current adjusting unit, main voltage adjusting unit, crater current adjusting unit , by rotating the crater voltage controller to set the desired current/voltage and crater current/voltage, respectively.

In addition, according to the operator's operation of the current control unit, this voltage control unit, the crater current control unit, and the crater voltage control unit, the signals of the first adjustment circuit 420 and the second adjustment circuit 430 are output, It may be transmitted to the welding body control unit 100 disposed in the welding body (10).

And, although not shown in detail, the wire feeder control unit 400 may further include an inching control circuit 440 , a torch control circuit 450 , and a motor control circuit 460 .

The inching control circuit 440 may output the inching control signal to the third signal line of the single cable C1.

The torch control circuit 450 may output the torch control signal to the fourth signal line of the single cable C1.

The motor control circuit 460 may output the motor control signal to the fifth signal line of the single cable C1.

The inching control circuit 440 , the torch control circuit 450 , and the motor control circuit 460 may utilize the existing ones as they are or the same ones may be applied.

In addition, although not shown, the wire feeder control unit 400 may further include a gas valve control circuit. The gas valve control circuit may output the gas valve control signal to the sixth signal line of the single cable C1.

Meanwhile, the crater control unit 300 according to the present embodiment may include a second connector 310 .

The second connector 310 may be connected to the other end of the single cable C1, and may have a plurality of ports corresponding to a plurality of control lines of the single cable C1. This second connector 310 may have the same configuration as the above-described first connector 410 .

In addition, the crater control unit 300 may further include a signal determining unit 320 .

The signal determining unit 320 may determine the welding adjustment signal or the crater welding adjustment signal based on the direction of the adjustment signal received from the first signal line or the second signal line of the single cable C1.

The signal determining unit 320 may include a first signal determining unit 321 and a second signal determining unit 322 .

The first signal determining unit 321 may include one or more diodes, and based on the direction of the adjustment signal received from the first signal line of the single cable C1, the voltage adjustment signal SA1 or the crater current adjustment signal (SV1) can be determined.

For example, when the adjustment signal received from the first signal line of the single cable C1 has a first direction, the adjustment signal received from the first signal line may be determined as the current voltage adjustment signal SA1.

In addition, when the adjustment signal received from the first signal line of the single cable C1 has a second direction opposite to the first direction, the adjustment signal received from the first signal line is determined as the current adjustment signal SV1 can be

That is, the first signal determining unit 321 may set the current voltage adjustment signal SA1 and the current current adjustment signal SV1 based on the directionality of the adjustment signal received from one control line (the first signal line). have.

The second signal determining unit 322 may include one or more diodes, and based on the direction of the adjustment signal received from the second signal line of the single cable C1, the voltage adjustment signal SA2 or the crater current adjustment signal (SV2) can be determined.

For example, when the adjustment signal received from the second signal line of the single cable C1 has a third direction parallel to the first direction, the adjustment signal received from the second signal line can be determined as the crater voltage adjustment signal SA2. have.

In addition, when the adjustment signal received from the second signal line of the single cable C1 has a fourth direction opposite to the third direction, the adjustment signal received from the second signal line is determined as the crater current adjustment signal SV2. can

That is, the second signal determining unit 322 can be set to the crater voltage adjustment signal SA2 and the crater current adjustment signal SV2 based on the directionality of the adjustment signal received from one control line (the second signal line). have.

In addition, the crater control unit 300 may further include an adjustment signal generator 330 .

The adjustment signal generating unit 330 finally generates a size signal of the welding adjustment signal or the crater welding adjustment signal with respect to the adjustment signal input from the signal determining unit 320 , and outputs it to the main control unit 200 . can do.

The adjustment signal generator 330 may include a welding adjustment signal generator 331 and a crater welding adjustment signal generator 332 .

The welding adjustment signal generating unit 331 finally generates the magnitude signal of the current voltage adjustment signal SA1 and the current adjustment signal SV1 set from the first signal determining unit 321, and the voltage adjustment signal generated in this way SA1 and this current adjustment signal SV1 may be output to the main control unit 200 .

The crater welding adjustment signal generating unit 332 finally generates the magnitude signal of the crater voltage adjustment signal SA2 and the crater current adjustment signal SV2 set from the second signal determining unit 322, and the crater voltage adjustment signal thus generated SA2 and the crater current adjustment signal SV2 may be output to the main control unit 200 .

As described above, the crater treatment function using the welding control device according to the present invention may have various modes according to its use method.

As an example, it may have a crater-free mode without a crater processing function. That is, welding is possible only when holding the torch switch, and when the torch switch is released, welding can be stopped. This can be widely used in tack welding, etc., where welding is usually performed with low current.

As another example, it may have a crater-yu mode with a crater handling function. That is, if you hold the torch switch, welding starts with a relatively low crater current. If you release the torch switch during welding, welding proceeds with a relatively high main current. If you hold the torch switch again during welding, welding with a relatively low crater current. After this is in progress, if the torch switch is raised again, welding may be stopped.

In addition, the crater-u mode may be continuously and repeatedly performed. That is, if welding is performed with a relatively high current/voltage and the base material is heated a lot and the melt flows down, switch to a relatively low crater current/voltage to cool the base material to some extent, and then return to a relatively high Welding can also be performed with this current/voltage. In this way, the current/voltage and the crater current/voltage are repeatedly operated by the torch switch, and welding can be performed continuously without interruption, so that not only welding quality but also productivity can be greatly improved.

As described above, the welding control device according to the present invention can quickly and accurately set the current/voltage and the current/voltage for crater welding viewed from the wire feeder adjacent to the welding torch, thereby greatly improving welding quality and work efficiency.

In addition, the welding control device according to the present invention is very excellent in compatibility with the welding main body, the wire feeder, and a single cable connecting them.

That is, while using the wire feeder 20 and the welding torch 30 currently used in various industrial sites as it is, just by adding the wire feeder control unit 400, the crater processing function is possible in the wire feeder 30 Welding equipment may be provided.

In addition, it is also possible to effectively perform various welding functions including a crater processing function with a minimum of control lines.

In addition, it is also possible to prevent the problem of damage to the control unit 100 of the welding main body 10 due to the trouble of the existing single cable (C1).

Although the preferred embodiment of the present invention has been described with reference to the drawings as described above, those skilled in the art may vary the present invention in various ways without departing from the spirit and scope of the present invention as set forth in the following claims. may be modified or changed.

10: welding body
20: wire feeder
30: welding torch
100: welding body control unit
200: main control unit
300: crater control unit
310: second connector
400: wire feeder control unit
410: first connector
C1: single cable

Claims (8)

a welding body control unit disposed on the welding body and configured to control an operation state of the welding body; and
A wire feeder control unit disposed in the wire feeder, controlling the operating state of the wire feeder, and transmitting a user's input signal to the welding body control unit through a single cable; includes;
The wire feeder control unit,
a first connector to which one end of the single cable is connected;
A current control signal or a crater current control signal is generated according to a user input signal, and the generated current control signal or the crater current control signal is output to the first signal line of the single cable, and the first signal line A first diode connected to the first diode that is connected and turned on when the current adjustment signal is transmitted according to a user input signal, and the first diode connected to the first signal line to be connected in parallel to the first diode and turned on when a crater current adjustment signal is transmitted according to a user input signal a first regulating circuit having two diodes;
The main voltage adjustment signal or the crater voltage adjustment signal is generated according to the user input signal, and the generated main voltage adjustment signal or the crater voltage adjustment signal is output to the second signal line of the single cable, and the second signal line is connected to the second signal line. A third diode connected to the third diode that is connected and turned on when the main voltage adjustment signal is transmitted according to a user input signal, and a third diode connected to the second signal line to be connected in parallel to the third diode and turned on when a crater voltage adjustment signal is transmitted according to a user input signal a second regulating circuit having 4 diodes;
The welding body control unit includes a main control unit for controlling the operation state of the welding body, and a crater for generating an adjustment signal for crater processing input from the single cable, and outputting the generated adjustment signal to the main control unit comprising a control unit;
The crater control unit includes a first signal discrimination unit that determines whether the voltage adjustment signal or the current adjustment signal is the current adjustment signal based on the direction of the adjustment signal received from the first signal line, and the adjustment received from the second signal line and a signal discrimination unit having a second signal discrimination unit for determining whether it is a crater voltage control signal or a crater current control signal based on the direction of the signal,
The signal discrimination unit,
If the adjustment signal received from the first signal line has a first direction, it is determined as the current voltage adjustment signal,
If the adjustment signal received from the first signal line has a second direction opposite to the first direction, it is determined as the current adjustment signal,
When the adjustment signal received from the second signal line has a third direction parallel to the first direction, it is determined as a crater voltage adjustment signal,
Welding control apparatus capable of crater processing, characterized in that when the adjustment signal received from the second signal line has a fourth direction opposite to the third direction, it is determined as a crater current adjustment signal.
delete delete delete According to claim 1,
The crater control unit,
With respect to the adjustment signal input from the first signal determining unit, a magnitude signal is generated for each of the main voltage adjustment signal and the main current adjustment signal for main welding, and the generated main voltage adjustment signal and the main current adjustment signal are generated. a welding adjustment signal generating unit for outputting to the main control unit;
A magnitude signal for each of the crater voltage adjustment signal and the crater current adjustment signal is generated with respect to the adjustment signal input from the second signal determining unit, and the generated crater voltage adjustment signal and the crater current adjustment signal are controlled by the main control Crater processing possible welding control device, characterized in that it further comprises a crater welding adjustment signal generating unit output to the unit.
According to claim 1,
The first adjustment circuit comprises:
a first resistor having one end connected to the common line and the other end connected to the ground line, and configured to output the excited power to the first signal line;
and a second resistor connected in parallel to the first resistor, one end connected to the common line and the other end connected to the ground line, and configured to output excited power to the first signal line;
The first diode is connected to the first signal line to control the output according to the first resistance,
The second diode is connected to the first signal line, the welding control device capable of crater processing, characterized in that to regulate the output according to the second resistance.
7. The method of claim 6,
The second adjustment circuit comprises:
a third resistor having one end connected to the common line and the other end connected to the ground line, for outputting the excited power to the second signal line;
and a fourth resistor connected in parallel to the third resistor, one end connected to the common line and the other end connected to the ground line, and configured to output excited power to the second signal line;
The third diode is connected to the second signal line to control the output according to the third resistor,
The fourth diode is connected to the second signal line, the welding control apparatus capable of crater processing, characterized in that to regulate the output according to the third resistance.
According to claim 1,
The wire feeder control unit,
an inching control circuit for outputting an inching control signal to a third signal line of the single cable;
a torch control circuit for outputting a torch control signal to a fourth signal line of the single cable;
a motor control circuit for outputting a motor control signal to a fifth signal line of the single cable;
Among the gas valve control circuits for outputting the gas valve control signal to the sixth signal line of the single cable,
Welding control device capable of crater treatment, characterized in that it further comprises at least one.

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