KR101798932B1 - Feeding device of filler metal for welding - Google Patents

Feeding device of filler metal for welding Download PDF

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Publication number
KR101798932B1
KR101798932B1 KR1020160011931A KR20160011931A KR101798932B1 KR 101798932 B1 KR101798932 B1 KR 101798932B1 KR 1020160011931 A KR1020160011931 A KR 1020160011931A KR 20160011931 A KR20160011931 A KR 20160011931A KR 101798932 B1 KR101798932 B1 KR 101798932B1
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South Korea
Prior art keywords
welding
current
input
display unit
feeding
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KR1020160011931A
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Korean (ko)
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KR20170090937A (en
Inventor
서기정
전재호
이택동
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(주)부경대학교 기술지주회사
슈퍼티그웰딩 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/095—Monitoring or automatic control of welding parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/124—Circuits or methods for feeding welding wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
    • B23K9/1336—Driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

The present invention discloses a refuse feeder for an arc welder. A welding system for welding an arc welding machine according to the present invention includes an input and display unit for inputting and storing welding parameter information such as a current ratio and displaying the input and display information, a current sensor for detecting a welding current value output from the welding machine body in real time, A control unit for controlling the feeding device based on the current ratio data input from the display unit and the welding current value transmitted from the current sensor, and a feeding motor driving unit for receiving the control signal from the control unit to drive the feeding motor The control unit calculates a filler feed rate based on the inputted current ratio and the welding current signal transmitted from the current sensor and outputs a control signal for variably controlling the driving state of the feed motor drive unit according to the welding current . According to this configuration, since the feed rate is automatically determined according to the set current ratio without adjusting the feed rate to each current in the field where the welding current is variously changed, it is possible to improve the stability of welding quality and productivity Can be effectively achieved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a feeder device for an arc welder,

More particularly, the present invention relates to an arc welder feeding apparatus for detecting an output welding current value of an arc welder as real time information and detecting the welding arc current of the arc welder based on detected information and welding parameter data information pre- The present invention relates to a refractory feeding apparatus for an arc welder, which improves the stability of welding quality and the productivity, as well as the convenience of welding work, by precisely varying the consumable material.

As is well known, shield gas metal arc welding, such as gas tungsten arc welding (GTAW) or gas metal arc welding (GMAW), forms a welding atmosphere with a shielding gas such as carbon dioxide or inert gas, It is mainly used for various welding such as materials which can not be covered arc welding due to advantages such as improvement of efficiency and easy securing of welding quality. Such protective gas metal arc welding may be performed by using a cost-based welding method such as TIG (Tungsten Inert Gas) welding and using a consumable electrode such as MIG (Metal Inert Gas), carbon dioxide (CO 2 ) or MAG The polar welding method is well known.

That is, in the TIG welding, welding is performed by melting the base material and the filler material by using arc heat generated between the tungsten electrode and the base material in an inert gas atmosphere such as argon or helium.

In MIG or MAG welding, arc is generated between the electrode and the base material by using a consumable electrode as a consumable electrode (welding wire, for example, a wire having a diameter of 0.8-1.6 mm), welding is performed by forming a welding paper and forming a welding bead .

Therefore, when the welding is performed by the protective gas metal arc welding machine as described above, the filler supplied to the arc generating portion at the tip of the welding torch is gradually consumed by the arc, so that it is wound in the form of a wire in a spool, And the weld is continuously supplied to the arc generating portion at the tip of the welding torch.

However, in conventional conventional arc welder feeding systems, when the set mode is set up for the welding operation, the operator directly feeds wire (wire) as shown in FIG. 1, The delay time, the delay time of stopping feeding and the backing length of the consumable material should be set as individual welding parameters, respectively.

Particularly, in a case where welding is performed with different currents in one part of a product or welding with a different current value for each path in multi-layer welding of a thick plate, it is very complicated and complicated in actual field because it is necessary to set the speed of the welding for each current.

In addition, the conventional sputtering apparatus of the arc welding machine can precisely change the consumable material in response to a change in the output welding current value of the welding machine, a change in the contact and short intervals between the consumable material and the base material, So it is difficult to transport it.

Therefore, even if the welding condition is changed to the set welding parameters at the time of set-up of the welding operation, the feed amount of the filler material is improperly supplied due to the error of the filler speed, So that the quality of the welding is significantly deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the technical background as described above and it is an object of the present invention to solve the problems of the background art described above, It can not be said to have been publicly known to the general public before.

Korean Patent Registration No. 10-0739862 Korean Patent Registration No. 10-1073745 Korean Patent Publication No. 10-1084575 Korean Registered Patent No. 10-1467205 Korean Patent Registration No. 10-1482608 Korean Patent Publication No. 10-1508130

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the conventional arc welding machine for arc welding machine, and it is an object of the present invention to provide a method of setting up a parameter setting set- The present invention is to provide a refractory feeding apparatus for an arc welder, which is improved to improve the convenience by simplification and improve welding efficiency and productivity.

Another object of the present invention is to provide an improved arc welding apparatus and method which can improve the stability of welding quality by varying the feeding speed of the consumable material on the basis of information on the detected welding parameter data and the output welding current value in real time, And to provide a feeding device for the spent material.

In order to achieve the above object, according to the present invention, there is provided a consumable material feeding device connected to a main body of a welding machine for feeding a consumable material at an appropriate speed to an arc generating part of a welding torch tip, An input and display unit for receiving and displaying an input signal; A current sensor for detecting a welding current value output from the welding machine body in real time; A control unit for calculating and controlling the data input from the input and display unit and the current measured by the current sensor; And a feed motor drive unit for driving the feed motor in accordance with a control signal from the control unit. The control unit calculates a filler feed speed according to signal information on a welding current value transmitted from the current sensor, And outputs a control signal for variably controlling the driving state of the driving unit.

In the apparatus for feeding a consumable material of an arc welding machine according to the present invention, the control unit may include signal information on a welding current value sent from the current sensor, a current ratio CR inputted through the input unit, Based on the cross-sectional area information,

[Equation 1]

"Current ratio (CR: A / cm 3 / min) = current (A) ÷ filler metal melting rate (cm 3 / min)"

Here, the meltable material melt rate is a volume at which the meltable material is melted per unit time

&Quot; (2) "

"Fusing speed of molten solder (cm 3 / min) = Cross-sectional area of soldering material (cm 2 ) x Feed rate (cm / min)

&Quot; (3) "

(A) / current ratio (A / cm 3 / min) ÷ cross-sectional area of the consumable material (cm 2 ) "

And outputs a control signal for variably controlling the driving state of the feeding motor driving unit 140. The feeding speed of the feeding motor driving unit 140 is controlled based on the control signal.

Preferably, the input and display unit is provided with a mode selection switch that can be selected from any of a current non-constant feed rate mode based on the current ratio and a feed rate constant feed rate mode by operation of a mode conversion switch.

The input and display unit may have a configuration in which the output welding current information of the welding power source of the welding machine body detected by the current sensor is displayed and the lubricant feeding speed calculated by the control unit is linked and displayed.

Further, the input and display unit may have a configuration in which welding parameter information is input by wireless communication of the remote controller.

According to the present invention, the following effects can be obtained according to the supply system of the excavator of the arc welder.

First, when the parameters for welding operation are set, the current ratio and the cross-sectional area of the consumable material are set as the welding parameters based on the database-based information for each welding mode, whereby the flux speed of the consumable material is automatically set depending on the output welding current value of the welding machine. Accordingly, it is possible to eliminate the process of inputting and setting the welding speed according to various welding currents when setting the parameters for the welding operation. Therefore, it is possible to improve the convenience by simplifying the welding set-up operation, Can be effectively improved.

Second, the output welding current value of the arc welder is detected as real time information through the current sensor, and precisely variable material is used in the welding process according to the calculated loading ratio of the consumable material based on the detected information, input set current ratio and consumable material cross- . As a result, it is possible to precisely control the speed at which the filler material is transferred in response to a minute change in the welding conditions in the course of the welding, so that the welding quality and stability can be effectively secured.

Third, it is possible to input and set the optimum current ratio information for various welding processes such as butt, cladding, and hard pacing, and to input and set the welding range and function of the arc welder effectively.

Fourth, if the optimal current ratio is set only once for low-frequency pulse welding, the feed rate is automatically dependent on the peak current and the base current, so that the maximum current value And the troublesome procedure in which the speed of the song corresponding to the basic current value must be individually set can be all omitted.

Fifth, according to the setting of the current ratio, the consumables are fed according to the output welding current value of the welding machine. Therefore, only the setting of the feed start current (feed stop & reverse current) is performed while excluding the separate setting of the feed start delay time and the feed start delay time Since welding control of the consumables at the start and end of the arc is possible, excellent weld quality can be obtained at the welding start and end stages.

Sixth, since the control section can perform the welding by setting the welding condition and the state to the optimal state, it is possible to carry out the welding process which is efficient, stable, and double the productivity because of low dependency by the skill of the operator, It is possible to set the parameter input so that the welding operation efficiency and the welding environment can be improved by the remote operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing a parameter setting operation of a consumable material feeding apparatus of a conventional arc welder. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arc welding machine,
FIG. 3 is a schematic view showing a welding parameter setting mode input and display unit of a supply system for a consumable material of an arc welder according to the present invention. FIG.
4 is a flowchart showing a parameter setting operation of an excavator feeder of an arc welder according to the present invention.
FIG. 5 is a flowchart showing a control operation of an excavator feeding apparatus of an arc welder according to the present invention. FIG.
6 is a diagram illustrating an example of switching from a current non-constant feed rate mode to a feed rate constant feed rate mode in an excrement feeder of an arc welder according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for supplying and supplying a material to an arc welder according to the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing description and the accompanying drawings are merely exemplary and are not to be construed as limiting the scope of the present invention as defined by the appended claims. The parts that the engineer can easily implement can be omitted.

FIG. 2 is a schematic view of a refractory feeding device for an arc welder according to the present invention, which is applied to a TIG welding machine.

2, a welding system 100 for welding an arc welder is connected to a welding power source 10 of a welding machine main body by a cable C, and the tip of the electrode 21 of the welding torch 20 A current sensor 130 for detecting the welding current A in real time, a control unit 110, a welding parameter data input and display unit 120, and a current sensor 130 for detecting the welding current A in real time, And a feeding motor driving unit 140 for driving the spool 160 to feed the sparkling material W wound in a wire form in one direction.

The control unit 110 controls the filler flux speed according to the data received from the input and display unit and the current signal detected by the current sensor. The control unit 110 controls the welding current, (Hereinafter referred to as "CR") (the definition of the current ratio will be described later), the consumable cross-sectional area data, and the value of the welding current A output from the welding power source 10 of the welder body at the current sensor 130 And feeds the consumables to the feeding motor driving unit 140 based on the signal information. The welding material W wound in the form of a wire is linearly corrected by a roller member (not shown) on a spool 160 driven by the feeding motor driving unit 140 to rotate the welding torch 20 The welding operation is performed while being continuously supplied to the tip arc generating portion of the electrode 21 at an appropriate speed.

According to the present invention, the current ratio CR is defined by the following equation (1).

[Equation 1]

"Current ratio (CR: A / cm 3 / min) = current (A) ÷ filler metal melting rate (cm 3 / min)"

Here, the meltable material melting rate is a volume at which the meltable material is melted per unit time, and is calculated according to the following equation (2).

&Quot; (2) "

"Fusing speed of molten solder (cm 3 / min) = Cross-sectional area of soldering material (cm 2 ) x Feed rate (cm / min)

Therefore, according to the present invention, the controller 110 calculates the supply speed of the consumable material as shown in Equation (3) below based on Equations (1) and (2).

&Quot; (3) "

(A) / current ratio (A / cm 3 / min) ÷ cross-sectional area of the consumable material (cm 2 ) "

That is, according to the arc welding apparatus 100 of the arc welding machine according to the present invention, when the set mode is set up for the welding operation, it is displayed on the input and display unit 120 shown in FIG. The current ratio CR and the cross-sectional area of the consumable material (cm 2 ) can be input as the welding parameter data information by operating the input dial 121 as shown in FIG. Thus, while the output welding current information of the welding power source 10 of the welding machine body detected by the current sensor 130 is displayed, the control unit 110 calculates the welding current of the welding power source 10 of the welding machine body by using Equation 1, Equation 2 and Equation 3 And the feeding motor driving unit 140 is controlled at the feeding speed indicated as above.

According to an aspect of the present invention, the input and display unit 120 may store optimal current ratio data bases according to various welding processes of various materials.

According to the present invention, when fluctuation occurs in the output welding current value of the welding power source 10 of the welding machine main body during welding, the output welding current information of the arc welding machine is displayed on the display The control unit 110 recalculates and displays the consumed material feeding speed according to equations (1), (2), and (3) as described above, 140).

Therefore, according to the present invention, the output welding current value of the arc welder is detected as real-time information, and the detected welding material feeding rate It is possible to precisely vary and transfer the consumable material.

3, the reference numeral 122 denotes a mode change switch. The apparatus 100 for supplying the excipient to the arc welder according to the present invention has a current ratio CR based on the operation of the mode changeover switch 122, It is possible to select one of the constant-speed feed mode and the rapid-speed constant-speed feed mode to perform the operation. In the case of such a rapid feed rate constant feed mode, the feed rate is determined in accordance with the current value according to the current ratio (CR) set in the upslope section and the downslope section at the time of welding as exemplified in FIG. 6, It is possible to operate such that the current is constantly outputted at the set transfer speed without interlocking with the current value.

3, reference numeral 123 denotes an inching switch for manual work such as detachment of a fugitive material.

In addition, according to the arc welding and feeding apparatus 100 for an arc welding machine according to the present invention, it is possible to input and set welding parameter data information for each welding process.

FIG. 4 is a flow chart illustrating a procedure for setting the welding parameters of the excavator feeder of the arc welding machine according to the present invention. The current ratio CR and the cross section of the consumable material, the feed start delay time, the feed delay time, Is input and set as a welding parameter. The parameter setting data information for the welding operation may be stored in the data storage unit of the control unit 110 as a database.

The control operation of the excavator feeding apparatus 100 of the arc welding machine according to the present invention having the above-described structure will be described with reference to the flowchart of FIG.

When arc current conduction is started at the same time that the set-up operation such as the setting of the welding parameter data input setting for the welding operation of the arc welding material supplying apparatus 100 of the arc welding machine according to the present invention is started and an arc is generated S-101), the current sensor 130 detects the value of the welding current A output from the welding power source 10 of the welding machine main body, and transmits signal information to the control unit 110 (S-102).

Then, the control unit 110 determines the welding current A based on the value of the welding current A detected by the current sensor 130, the current ratio CR set through the input and display unit 120, (S-103). ≪ / RTI >

Then, when the value of the welding current output from the welding power source 10 reaches the spark-ignition starting current (S-104), the control unit 110 drives and controls the feeding motor driving unit 140 to start feeding the spark.

Accordingly, the normal welding process proceeds at the tip arc portion of the electrode 21 of the welding torch 20 (S-106). When the welding current value reaches the purging stop and reverse current (S-107) as the welding process proceeds, the feeding of the consumables is stopped (S-107).

Subsequently, when the supply of the excrement material is stopped, the consumable material is moved backward (S-107) according to the value of the backing material set through the input and display unit 120, and the welding process is terminated.

Meanwhile, in the example of switching from the current non-constant feed rate mode to the feed rate constant feed rate mode illustrated in FIG. 6, for example, it can be effectively applied to the circumferential welding of a large pipe, The welding is started and the welding is started. Then, when it rotates around the welding start part, the preheating effect is obtained due to the heat input at the starting part, so that the current is lowered and the welding speed is constant. .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that various modifications may be made, and such modifications are intended to fall within the scope of the appended claims.

10: welding power source
21: Welding torch
100: Spent feeder
110:
130: input and display section
140: Current sensor
150: feed motor drive section
160: spool
W: Ingredient
M: Base material

Claims (6)

A loading and unloading apparatus (100) for attaching to a main body of a welding machine and feeding a consumable material at a constant speed to an arc generating portion of a welding torch tip portion,
An input and display unit 120 for inputting and displaying welding parameter information;
A current sensor 130 for detecting a welding current value output from the welding machine body in real time;
A control unit (110) for controlling the feeding device based on the data input from the input and display unit and the welding current value transmitted from the current sensor at a feeding speed calculated; And
And a feeding motor driving unit 140 for driving the feeding motor in accordance with a control signal from the controller 110,
The control unit 110 calculates a consumed substance feeding speed based on the welding current value sent from the current sensor 130 and outputs a control signal for variably controlling the driving state of the feeding motor driving unit 140,
The control unit 110 calculates the consumable material feeding speed (cm / min) based on the welding current value sent from the current sensor 130, the current ratio CR inputted through the input and display unit 120, and the consumable material cross- ) Based on the relational expression "current (A) / current ratio (A / cm 3 / min) / consumable cross section area (cm 2 )" to control the drive state of the feed motor drive unit 140 in a variable manner And outputs a control signal
Wherein the welding current value is detected as real time information and the consumable material is varied and fed according to the calculated consumed material rapidity based on the detected welding current value and the previously inputted current ratio data information.
delete The method according to claim 1,
Wherein the input and display unit (120) is selected and operated by any one of a current non-constant feed rate mode and a feed rate constant feed rate feed mode by operation of a mode changeover switch (122) Device. The method according to claim 1,
And the current ratio database according to the kind of the metal material and the welding process of the arc metal can be stored. The method according to claim 1,
The input and display unit 120 displays the output welding current information of the welding power source 10 of the welder main body detected by the current sensor 130 and outputs the welding current feed rate or welding speed calculated by the control unit 110 Wherein the display unit displays the information in association with each other. 6. The method according to any one of claims 1 to 5,
Wherein the input and display unit (120) inputs welding parameter information by wireless communication of the remote controller.
KR1020160011931A 2016-01-29 2016-01-29 Feeding device of filler metal for welding KR101798932B1 (en)

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JP7048382B2 (en) * 2018-03-28 2022-04-05 株式会社神戸製鋼所 Control method and control device for gas shielded arc welding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100899759B1 (en) * 2007-08-27 2009-05-27 정인용 Apparatus for providing filler wire of welding device
JP2012192431A (en) * 2011-03-16 2012-10-11 Daihen Corp Welding equipment
KR101552945B1 (en) * 2015-01-22 2015-09-30 (주)삼호용접기 A Welding apparatus With a Multifunctional Wire Feeder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100899759B1 (en) * 2007-08-27 2009-05-27 정인용 Apparatus for providing filler wire of welding device
JP2012192431A (en) * 2011-03-16 2012-10-11 Daihen Corp Welding equipment
KR101552945B1 (en) * 2015-01-22 2015-09-30 (주)삼호용접기 A Welding apparatus With a Multifunctional Wire Feeder

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