KR20170011596A - Arc welding apparatus - Google Patents

Abstract

The arc welding apparatus of the present invention comprises: a welding torch which generates an arc and welds a base metal; a wire supplier which supplies a welding wire to generate the arc; a gas supplier which supplies protection gas to the welding torch; a welder main frame respectively connected to the welding torch and the wire supplier to control welding operation, including a welding voltage/welding current control unit which generates and supplies a welding voltage and welding current, which matches an entered selection signal, among welding voltage values and welding current values, set in a plurality of stages in accordance with welding operation variables; and a remote controller which allows a worker to enter the selection signal to the welding voltage/welding current control unit from a remote place from the welder main frame. The present invention aims to provide an arc welding apparatus which is able to improve an efficiency of a welding process using a remote controller.

Description

[0001] ARC WELDING APPARATUS [0002]

The present invention relates to an arc welding apparatus. More particularly, the present invention relates to a consumable electrode type gas arc welder.

Generally, a gas arc welder such as a carbon dioxide arc welder or an argon gas arc welder welds a welding surface with a gas to prevent the formation of oxides or nitrides on the welded portion when external air is introduced during welding, .

The welder main body of the gas arc welder has welding voltage / current adjustment, crater current / voltage adjustment, wire selection, and gas check function, and can control a gas supplier such as a wire feeder and a carbon dioxide gas.

In fact, the distance between the main body of the welding machine and the wire feeder is far away from the industrial site, so that it is inconvenient to adjust the welding voltage and the welding current while adjusting the welding current.

An object of the present invention is to provide an arc welding apparatus capable of improving the efficiency of a welding process by using a remote controller.

According to an aspect of the present invention, there is provided an arc welding apparatus including a welding torch for generating an arc to weld a base material, a wire feeder for supplying a welding wire for generating the arc, A gas supply for supplying a protective gas, a welding torch and a wire feeder, respectively, for controlling the welding operation and matching the welding voltage values set in a multistage manner according to the welding operation variables and the welding current values, A welding voltage / welding current controller for generating and supplying a welding voltage and a welding current; and a remote controller for inputting the selection signal to the welding voltage / welding current controller at a location spaced apart from the welding machine main body, .

In the exemplary embodiments, the welding voltage / welding current control unit may include a selection signal receiving unit that receives the selection signal from the remote controller and turns on the relay in accordance with the selection signal, and a selection signal receiving unit that is connected to the selection signal receiving unit And a relay circuit unit having a plurality of relays and the relays being turned on to output the welding voltage and the welding current matching the selection signal.

In an exemplary embodiment, the relay circuit unit may further include an output adjusting unit connected to an output terminal of each relay and adjusting a welding voltage value and a welding current value output when the relay is turned on.

In the exemplary embodiments, the remote controller may further include a voltage adjusting terminal connected to the output adjusting unit and adjusting the welding voltage value, and a current adjusting terminal for adjusting the welding current value.

In exemplary embodiments, the remote controller may include a rotary switch for generating the selection signal.

In the arc welding apparatus according to the exemplary embodiments, the welding voltage and the welding current value set in multiple stages are selected and adjusted by using the remote controller without having to go to the welding machine main body in order to adapt to the welding parameters to be changed while the welding operation is being performed So that the welding operation can be performed.

Therefore, it is possible to shorten the time for adjusting the welding voltage and the welding current in order to cope with the welding variables, and to cope with the demands of the thickness of the base material, the welding posture, and the welding heat quantity immediately, thereby improving the welding work efficiency.

Further, since the preset welding voltage value and the welding current value can be finely adjusted, the welding operator can work with a desired value, and the setting of the welding operation and the welding conditions are standardized, so that even the novice can easily judge and use it.

However, the effects of the present invention are not limited to the above-mentioned effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 is a schematic diagram showing an arc welding apparatus according to exemplary embodiments.
Fig. 2 is a perspective view showing the wire feeder of Fig. 1;
3 is a block diagram showing the welder body of FIG.
4 is a block diagram illustrating an arc welding apparatus according to exemplary embodiments.

For the embodiments of the invention disclosed herein, specific structural and functional descriptions are set forth for the purpose of describing an embodiment of the invention only, and it is to be understood that the embodiments of the invention may be practiced in various forms, The present invention should not be construed as limited to the embodiments described in Figs.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprise", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be construed as meaning consistent with meaning in the context of the relevant art and are not to be construed as ideal or overly formal in meaning unless expressly defined in the present application .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

1 is a schematic diagram showing an arc welding apparatus according to exemplary embodiments. Fig. 2 is a perspective view showing the wire feeder of Fig. 1; 3 is a block diagram showing the welder body of FIG. 4 is a block diagram illustrating an arc welding apparatus according to exemplary embodiments.

1 to 4, an arc welding apparatus 10 includes a welder body 100 for controlling the welding operation as a whole, a gas feeder 200 for supplying a protective gas, a wire feeder a welding torch 400 for performing welding on the base material 30 to be welded and a welding current selected by the operator at a location spaced apart from the welding machine main body 100 And a remote controller 500 for inputting a selection signal to the welding machine main body 100.

In the exemplary embodiments, the welder body 100 may be connected to the power source 20 via a power cable to receive power from the external power source 20. The welder body 100 may include control means for controlling the operation of each component of the arc welding apparatus 10. [ The welding machine main body 100 may be provided with a switch or the like for performing various operations.

The welder body 100 may be electrically connected to each component of the arc welding apparatus 10 through a welding cable C. [ Specifically, the welder main body 100 can be electrically connected to the welding torch 400 through the feed cable C1 to supply welding power. The welder body 100 may be electrically connected to the wire feeder 300 through the control cable C2 to supply electric power for feeding the welding wire.

The welder body 100 is connected to the gas feeder 200 through a gas feed line and protective gas can be supplied to the welding torch 400 from the gas feeder 200 via a gas cable C3. The gas supplier 200 may supply the protective gas to the gas flow controller (not shown) installed in the wire feeder 300 through the gas cable C3. For example, the protective gas may include helium, nitrogen, argon, carbon dioxide, etc., which are inert gases to improve the quality of the weld.

Alternatively, the gas feeder 200 may be connected to a gas flow controller (not shown) provided in the wire feeder 300 without being connected to the welder body 100, to supply the protective gas directly to the welding torch 400 . In addition, the base material 30 may be connected to the welder body 100 via a base material cable.

When the operator presses the torch switch of the welding torch 400, the carbon dioxide gas, which is the protective gas charged in the gas supplier 200, is injected through the nozzle provided in the welding torch 400, and at the same time, An arc is generated at the end of the base material 30 and the welding wire by the transfer of the welding wire 312 while the feeding speed is controlled so that the base material 30 can be welded. Further, during welding, the welding torch 400 can be cooled while circulating the cooling water. At this time, the shape of the beads, that is, the spreading state and the bonding state, generated by melting the welding wire by the arc can be determined according to the welding voltage of the welding machine body 100 and the welding current (feed speed of the welding wire).

The welding cable includes a welding power supply for supplying the welding power, a power for driving the wire feeder, a torch control signal supplied from the control means, for example, A control signal for controlling the driving of the gas flow controller 320 and a solenoid valve of the gas flow controller to supply the carbon dioxide gas stored in the gas feeder 200 to the welding torch 400 connected to the wire feeder 300 through the gas cable C3 And a solenoid valve control signal for controlling the solenoid valve.

In the exemplary embodiments, the welder body 100 may be connected via a connection cable C4 or wireless communication to an actuation remote controller 500 for remotely performing a particular operation.

The remote controller 500 is installed on the control panel 330 of the wire feeder 300 and is electrically connected to the welder main body 100 through the connection cable C4 so that the operator can select the welding voltage and the welding current A signal can be input to the welder main body 100 through the remote controller 500. [ For example, the remote controller 500 may include a rotary switch or a button switch having two, four, six or ten switches. Alternatively, the remote controller 500 may input a selection signal to the welder body 100 using wireless communication through a remote location away from the welder body 100. Therefore, the remote controller 500 can be used to remotely perform a specific operation of the welder main body 100 at a position distant from the welder main body 100.

3, in the exemplary embodiments, the operator inputs a selection signal for selecting a welding voltage value and a welding current value that are preset in a multistage manner in accordance with the welding operation variables through the remotely controller 500, And the welder main body 100 generates a welding voltage and a welding current matching the selection signal and supplies the welding voltage / welding current controller to the welding torch 400 and the wire feeder 300, respectively .

The welding voltage / welding current control unit includes a selection signal receiving unit 110 for receiving the selection signal from the remote controller 500 and turning on the relay in accordance with the selection signal, And a relay circuit unit 120 having relays for turning on the relays and outputting a welding voltage and a welding current matching the selection signal. The relay circuit unit 120 may further include an output adjusting unit connected to an output terminal of each relay and adjusting a welding voltage value and a welding current value output when the relay is turned on.

For example, the remote controller 500 has ten switches (1, 2, ..., 10), and the relay circuit unit 120 includes ten first to tenth relays RY1, ..., RY10 can do. The relay circuit unit 120 is connected to the output terminals of the first to tenth relays RY1, ..., RY10 and has first to tenth output adjusting units (VR1, ..., VR10). For example, each of the first to tenth power adjusters may include at least one variable resistor that can be finely adjusted by an operator. Each of the first to tenth relays may include a relay for controlling a welding voltage and a relay for controlling a welding current. Each of the first to tenth power adjustment units may include a welding voltage output adjusting unit connected to an output terminal of the welding voltage adjusting relay and a welding current output adjusting unit connected to an output terminal of the welding current adjusting relay. The welding voltage output adjusting unit and the welding current output adjusting unit may include a variable resistor for adjusting a welding voltage and a welding current to be output.

The operator can set the welding voltage and the welding current output when the corresponding relay of the relay circuit unit 120 is turned on through the first to tenth power adjustment units VR1, ..., VR10. The operator can preset welding voltage values and welding current values for the 10 working variables that can occur while performing the welding operation using 10 relays. However, it will be appreciated that the number of relays is not limited to this and can be determined by the number of welding variables. The operator can set a matching table in which the welding voltage and the welding current outputted through each relay are set in the switch order in consideration of the thickness of the base material, the joint shape of the welding, the welding posture, and the welding process.

Table 1 is a table showing a matching table for a rotary switch according to one embodiment.

Rotary switch relay Welding voltage (V) Welding current (A) Switch 1 RY1 25V 25OA Switch 2 RY2 30V 300A Switch 3 RY3 35V 350A Switch 4 RY4 40V 400A Switch 5 RY5 45V 450A Switch 6 RY6 28V 280A Switch 7 RY7 30V 310A Switch 8 RY8 32V 330A Switch 9 RY9 34V 350A Switch 10 RY10 37V 380A

Referring to Table 1, for example, when the operator selects the switch 1 of the remote controller 500, the first relay RY1 is turned on and the second to tenth relays RY2, RY3, ..., RY10 are turned off do. Therefore, the first relay RY1 is turned ON, and the welding voltage V1 and the welding current I1 selected by the operator can be supplied to the welding torch 400 and the wire feeder 300, respectively.

Similarly, when the operator selects the switch 2 of the remote controller 500, the second relay RY2 is turned on and the first, third, and tenth relays RY1, RY3, RY4, ..., RY10 are turned off . Therefore, the second relay RY2 is turned ON, and the welding voltage V2 and the welding current I2 selected by the operator can be supplied to the welding torch 400 and the wire feeder 300. [

In the exemplary embodiments, the operator can set the welding voltage and the welding current output from the welding machine body 100 in multiple stages before performing the welding operation. The operator adjusts the variable resistance values connected to the respective relays by using the switches provided on the welder main body 100 or the remote controller 500 and adjusts the welding voltage values And welding current values.

The remote controller 500 may further include a voltage adjusting terminal 520 for adjusting the welding voltage value and a current adjusting terminal 522 for adjusting the welding current value. For example, the voltage regulating terminal 520 and the current regulating terminal 522 may be installed on the control panel 330 of the wire feeder 300 and may be connected to the output regulating section of the relay circuit section 120. The operator can manipulate the voltage adjusting terminal 520 and the current adjusting terminal 522 manually to set the welding voltage and the welding current in an analog manner and adjust the set values.

The distance between the welder main body 100 and the wire feeder 300 may be several to several tens of meters away from the actual industrial site. In particular, in the case of the shipyard, the worker may be further apart from the wire feeder 300, The welding operation is carried out by entering the workplace using only the welding wire 400. Further, in the welding operation, an optimized welding voltage and welding current may be required depending on the welding parameters (the thickness of the base material, the joint shape of the welding, the welding posture, the welding process, etc.)

When changing the welding voltage and the welding current according to the welding variables that are changed during the welding work in the workplace, the operator can select and weld the preset welding voltage and welding current according to the welding variable through the remote controller 500 have.

As described above, the operator sets and stores several welding voltage values and welding current values in consideration of the welding parameters before performing the welding operation in a place remote from the welding machine main body 100, The optimum welding voltage and welding current matched to the welding variables generated during the welding operation are selected and welded through the remote controller 500 to set the time for adjusting the welding voltage and the welding current to correspond to the welding variables And the welding work efficiency can be improved by promptly coping with the demands of the thickness of the base material, the welding posture, and the amount of welding heat input.

Further, since the preset welding voltage value and the welding current value can be finely adjusted, the welding operator can work with a desired value, and the setting of the welding operation and the welding conditions are standardized, so that even the novice can easily judge and use it.

As shown in FIG. 4, in exemplary embodiments, the arc welding apparatus 10 may further include a thickness sensor 40 for measuring the thickness of the base material 30. The remote controller 500 may further include a welding process selection switch 510 for selecting a welding process to be performed by the operator.

The welder body 100 also includes a receiver 112 for receiving a thickness detection signal from the thickness sensor 40 and a welding process signal from the welding process selection switch 510, And a storage unit 140 for storing the thickness and thickness of the base material 30 and the voltage and current matching table optimized for the welding process .

The storage unit 140 may be connected to the server 50 and the manager may update the voltage current matching table through the server 50. [ Alternatively, the operator may store and update the voltage / current matching table in the storage unit 140 using the remote controller 500 or the switch of the welder main body 100 or the like.

The calculating unit 130 may calculate the welding voltage value and the welding current value matched to the thickness detection signal and the welding process signal input from the receiving unit 122 using the voltage current matching table stored in the storage unit 140. [ The calculated welding voltage value and the welding current value may be displayed through the display unit 530. The display unit 530 may be provided in the remote controller 500 or the welder main body 100.

For example, the welding process may be carried out using a boom welding No. 1. X, arm welding No. X, etc., and the calculation unit 130 can calculate and output the optimum welding voltage value and welding current value according to the selected welding process and the base material thickness value.

The operator refers to the welding voltage value and the welding current value calculated by the calculation unit 130 and displayed on the display unit 530 and controls the voltage adjusting terminal 520 and the current adjusting terminal 520 connected to the output adjusting unit of the welding voltage / 522) to manually set the welding voltage and the welding current in an analog manner and adjust the set values.

Accordingly, if the unskilled person knows only the welding process to be performed, the standardized welding process can be performed. In the case where the attribute of the welding process is changed (for example, the welding posture is changed) and the working environment or the like changes and the welding current value or the voltage value is to be changed, the server 40 instructs the manager to read the voltage current matching table And provide a unified table for multiple welding devices inside the plant, so that even if there are multiple welders, the same welding standard can be provided to the workers.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. It can be understood that it is possible.

10: arc welding device 20: power source
30: base material 40: thickness sensor
50: a server 100: a welder body
110: signal receiving unit 112:
120: Relay circuit part 130: Operation part
140: storage part 200: gas supply device
300: wire feeder 312: welding wire
320: wire feed motor 330: control panel
400: welding torch 500: remote controller
510: welding process selection switch 520: voltage regulation terminal
522: current adjusting terminal 530:

Claims (5)

A welding torch for welding the base material by generating an arc;
A wire feeder for supplying a welding wire for generating the arc;
A gas supplier for supplying a protective gas to the welding torch;
The welding torch and the wire feeder are connected to each other to control a welding operation, and a welding voltage and a welding current matching the input selection signal among the welding voltage values and the welding current values set in multiple stages according to welding operation parameters are generated A welder main body having a welding voltage / welding current controller to be supplied; And
And a remote controller for allowing the operator to input the selection signal to the welding voltage / welding current control unit at a location spaced apart from the welding machine main body.
The method of claim 1, wherein the welding voltage / welding current controller
A selection signal receiver for receiving the selection signal from the remote controller and turning on the relay in response to the selection signal; And
And a relay circuit unit having a plurality of relays whose inputs are connected to the selection signal receiving unit and whose relays are turned on to output the welding voltage and the welding current matching the selection signal. 3. The arc welding apparatus as claimed in claim 2, wherein the relay circuit unit further comprises an output adjusting unit connected to an output terminal of each relay and adjusting a welding voltage value and a welding current value output when the relay is turned on. The arc welding apparatus according to claim 3, wherein the remote controller further comprises a voltage adjusting terminal connected to the output adjusting section and adjusting the welding voltage value, and a current adjusting terminal for adjusting the welding current value. The arc welding apparatus according to claim 1, wherein the remote controller includes a rotary switch for generating the selection signal.

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