JP4704604B2 - Welding power supply with output control parameter download function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a welding power supply apparatus having a function of downloading output control parameters of a welding power supply apparatus corresponding to various welding conditions via the Internet.
[0002]
[Prior art]
In order to obtain good welding quality, the latest welding power supply devices are equipped with welding power supply devices according to welding conditions such as carbon dioxide arc welding and pulse arc welding, welding material, welding wire diameter, etc. A number of output control parameters for optimizing the output control are stored internally. The output control parameters include an appropriate output voltage value (hereinafter referred to as a unitary voltage setting value Vs) corresponding to the current setting value Is input from the outside, a waveform shape parameter of the output current waveform and the output voltage waveform, and an arc start time. There are a number of parameters such as output current value and output voltage value, output current value and output voltage value at the arc end. Therefore, in general, the welding power supply apparatus selects several types to a dozen or more types of standard welding conditions, calculates appropriate output control parameters for each welding condition, and incorporates them. Then, the welding operator confirms the welding conditions before starting welding, and selects the welding condition number corresponding to the welding conditions by using the welding condition selection switch NS provided on the panel of the welding power supply device. Output control according to various output control parameters is performed, and good welding can be performed.
[0003]
For example, when the welding method is pulse arc welding, the material of the workpiece is mild steel, and the welding wire number is 1.2 [mm], the welding condition number is 01, and the welding method is pulse arc welding. The welding condition number is 02 when the material of the workpiece is mild steel and the diameter of the welding wire is 1.6 [mm], and the welding method is a pulse arc welding method. When the material is stainless steel, the welding condition number is 03 when the diameter of the welding wire is 1.2 [mm], the welding method is a pulse arc welding method, and the material of the workpiece is stainless steel, The welding condition number when the diameter of the welding wire is 1.6 [mm] is 04. When welding a mild steel using a welding wire having a diameter of 1.2 [mm] by the pulse arc welding method, the welding operator selects the welding condition number 01, and the stainless steel is diameter 1.6 by the pulse arc welding method. When welding using a welding wire of [mm], the welding condition number 04 is selected. Then, the welding power supply apparatus performs output control according to the output control parameter corresponding to the selected welding condition number and performs welding. Hereinafter, the prior art 1 and the prior art 2 regarding this output control parameter changing method will be described. In the following description, the case of the pulse arc welding method is exemplified as the welding method.
[0004]
[Prior art 1]
FIG. 1 is a current / voltage waveform diagram for explaining output control parameters in a welding power supply apparatus for pulse arc welding. FIG. 4A shows the time change of the output current Iw, and FIG. 4B shows the time change of the output voltage Vw. Hereinafter, a description will be given with reference to FIG.
[0005]
As shown in FIG. 6A, a predetermined peak current Ip is energized during a predetermined peak period Tp, and a predetermined base current Ib is energized during a base period Tb determined by control to be described later. To do. Further, as shown in FIG. 5B, the output voltage Vw becomes the peak voltage Vp during the peak period Tp and becomes the base voltage Vb during the base period Tb in accordance with the energization. The time length of the base period Tb is feedback-controlled so that the average value of the output voltage Vw becomes equal to the predetermined voltage setting value Vs.
[0006]
The parameters of the peak current Ip [A], the base current Ib [A], and the peak period Tp [ms] are one pulse / one droplet transfer, which is an essential blade condition for obtaining good welding quality in pulse arc welding. In order to realize the above, it is necessary to set an appropriate value in accordance with the welding conditions described above. Further, when the current set value Is [A] is input from the outside of the welding power source device, it is necessary to generate an appropriate unified voltage set value Vs corresponding to the current set value Is [A]. For this purpose, the relationship between the current setting value Is and the unitary voltage setting value Vs is defined as a linear expression of Vs = a · Is + b (a and b are constants), and the unitary voltage setting value Vs is calculated by the relational expression. There is a way. In this case, the unitary constants a and b need to be set to appropriate values corresponding to the welding conditions described above. Accordingly, an output control parameter data string having a set of data strings of the one-way constant a, the one-way constant b, the peak current Ip, the base current Ib, and the peak period Tp is set in advance corresponding to one welding condition number described above. It is necessary to As described above, since there are a plurality of welding condition numbers, a plurality of sets of the above output control parameter data strings are also stored. As the output control parameters, in addition to the above five parameters exemplified, as described above, there are many current setting values and voltage setting values at the time of arc start, current setting values and voltage setting values at the time of arc end, In order to simplify the description, the following description will be made using the above five parameters (a, b, Ip, Ib, Tp).
[0007]
FIG. 2 is a block diagram of the welding power source apparatus PS of the prior art 1 in which a plurality of sets of output control parameters are stored. Hereinafter, each circuit block will be described with reference to FIG.
The read-only storage element ROM stores output control parameters according to the memory configuration shown in FIG. As shown in FIG. 3, one data string includes a welding condition number Ns, a unitary constant a, a unitary constant b, a peak current Ip, a base current Ib, and a peak period Tp. FIG. 3 illustrates the case where there are five data strings. The data string when the welding condition number Ns = 01 is (01, a1, b1, Ip1, Ib1, Tp1), and the data string when the welding condition number Ns = 05 is (05, a5, b5, Ip5, Ib5, Tp5). The read-only storage element ROM is written with data when the welding power supply device is manufactured, and is inserted into the IC socket on the printed circuit board.
[0008]
The welding condition selection switch NS outputs a welding condition number signal Ns corresponding to the selected welding condition number. Generally, this welding condition selection switch NS is provided on the panel of the welding power source device. A current setting circuit IS provided outside the welding power source device outputs a current setting signal Is. The wire feed control circuit WC outputs a feed control signal Wc for feeding the welding wire 1 at a feed speed corresponding to the current setting signal Is. The wire feed motor WM rotates the feed roll 5a according to the feed control signal Wc and feeds the welding wire 1 at a predetermined feed speed.
[0009]
The input / output circuit IO reads the output control parameter data string (Ns, a, b, Ip, Ib, Tp) designated by the welding condition number signal Ns from the read-only storage element ROM, and sets the peak current. The signal Ip, the base current setting signal Ib, and the peak period setting signal Tp are output. Further, the input / output circuit IO receives the current setting signal Is as an input, calculates Vs = a · Is + b, and outputs a unified voltage setting signal Vs.
[0010]
The welding start circuit ST provided outside outputs a welding start signal St. The output control start circuit ON outputs the output control start signal On when the welding start signal St is input. The output control circuit INV receives an AC commercial power supply (three-phase 200 V, etc.) as an input, and outputs an inverter using the above-described unitary voltage setting signal Vs, peak current setting signal Ip, base current setting signal Ib, and peak period setting signal Tp as output control parameters. Output control by control or the like is performed, an output current Iw suitable for arc load is applied, and an output voltage Vw is applied. This output control is performed only while the output control start signal On is output. The welding wire 1 is fed through a welding torch 4 by a feeding roll 5a of a wire feeding device, and an arc 3 is generated between the workpiece 2 and welding is performed.
[0011]
[Prior Art 2]
FIG. 4 is a block diagram of a welding power source apparatus PS that can change the output control parameter from the outside. In the figure, the same circuit blocks as those in FIG. 2 described above are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, the memory element MEM and the communication interface circuit RS which are circuit blocks indicated by dotted lines different from those in FIG. 2 will be described.
[0012]
The memory element MEM is a memory element such as a rewritable RAM and flash memory, and has the same memory configuration as that of FIG. The communication interface circuit RS communicates with the personal computer PC using a protocol such as RS-232C.
[0013]
In the welding power source device of the above-described prior art 2, a new output control parameter data string stored in the personal computer PC is added to the previously stored output control parameter data string of the standard welding conditions shown in FIG. be able to. That is, a new output control parameter data string corresponding to welding conditions that are not standard welding conditions is experimentally calculated and stored in the personal computer PC in advance. Then, the personal computer PC and the communication interface circuit RS are connected by a communication cable, and the new output control parameter data string stored in the personal computer PC is transmitted and additionally stored in the storage element MEM.
[0014]
[Problems to be solved by the invention]
The conventional welding power source apparatus described above stores an output control parameter data string corresponding to the standard welding conditions. Therefore, when welding is performed under welding conditions other than the standard welding conditions, the output control parameter is not an appropriate value, so that good welding quality cannot be obtained. For example, when the work piece is a titanium alloy or a copper alloy, when the diameter of the welding wire is 0.8 [mm] or 2 [mm], the mixing ratio of the shielding maggas is 80% Ar (argon) Since the welding conditions such as a ratio other than (gas) + 20% CO2 (carbon dioxide) are not standard welding conditions, the output control parameter data string corresponding to those welding conditions is not stored. In such a case, the welding construction company (hereinafter referred to as the user) sends the output control parameter data string corresponding to the above non-standard welding conditions to the manufacturer of the welding power source (hereinafter referred to as the manufacturer). Request a special addition. The requested manufacturer usually calculates the output control parameter data string corresponding to the welding condition for the specific application of the user through experiments.
[0015]
Here, when the user is using the welding power supply device of the prior art 1, the maker manufactures the read-only storage element ROM in which the above-described calculated output control parameter data string is additionally written. Then, the manufacturer's service engineer brings the read-only storage element ROM to the site, and replaces it with a standard read-only storage element ROM built in the welding power source apparatus.
[0016]
However, in the above-described procedure, it takes a lot of days and labor to manufacture and bring a read-only storage element ROM for a specific purpose. Further, since welding power supply devices are often installed in narrow places, high places, etc. at welding sites, it is difficult to accurately insert a read-only memory element ROM having a large number of pins into an IC socket. It becomes. For this reason, the case where the insertion into the IC socket becomes insufficient and the output control of the welding power source apparatus becomes abnormal has occurred.
[0017]
On the other hand, as described above, when the user is using the welding power supply device of the related art 2, the output control parameter data string for the specific application stored in the personal computer can be added. For this purpose, the manufacturer calculates an output control parameter data string corresponding to a welding condition for a specific application by experiment, and creates an electronic output control parameter file for storing the data string in a personal computer. Then, the manufacturer transmits this output control parameter file to the personal computer owned by the service engineer described above by e-mail or the like. The service engineer connects the personal computer and the welding power supply device owned by the user with a communication cable, and additionally stores the output control parameter data string for the specific use described in the output control parameter file in the storage element MEM.
[0018]
In the procedure described above, it is not necessary to replace the read-only storage element ROM as in the case of the welding power supply device of the prior art 1, and the trouble of sending and replacing the read-only storage element ROM can be saved. However, in the above-described procedure, it is necessary for the service engineer to bring the personal computer to the site, connect the personal computer and the welding power supply device with a communication cable, and perform an operation of transmitting the output control parameter file. For this reason, it was necessary for the service engineer to visit the site, which was troublesome. Furthermore, it is a difficult task to connect a welding power supply apparatus and a personal computer, which are often installed in a narrow place or a high place, and operate the personal computer.
[0019]
Therefore, the present invention provides a welding power supply apparatus that can easily perform an operation of adding an output control parameter data string corresponding to a welding condition for a specific application that is not a standard, without requiring special knowledge.
[0020]
[Means for Solving the Problems]
The invention of claim 1 includes a file selection switch for selecting an output control parameter file name to be downloaded, address generation means for generating a file designation address from the selected output control parameter file name and a predetermined domain name, When the download start switch for starting download and the download start switch is switched to the start side, the output control specified by the file designation address is accessed by accessing the WWW server on the Internet designated by the file designation address. Internet connection interface means for downloading the parameter file, and a predetermined format for using the downloaded output control parameter file for output control of the welding power source Format conversion means for converting to an output control parameter data string, a welding condition selection switch for selecting a welding condition number, and a memory for saving the output control parameter data string in a storage area corresponding to the selected welding condition number And welding is performed by performing output control in accordance with the output control parameter data string corresponding to the welding condition number selected by the welding condition selection switch. It is a welding power supply with output control parameters and download function.
[0022]
According to a second aspect of the present invention, there is provided a format discriminating means for discriminating whether the downloaded output control parameter file conforms to a predetermined file format and prohibiting the start of welding when it does not conform. It is a welding power supply device with the output control parameter download function of Claim 1.
[0023]
According to the invention of claim 3, when the download start switch is switched to the start side, the Internet connection interface means accesses the WWW server on the Internet designated by the file designation address and performs output control designated by the file designation address. Internet connection interface means for repeatedly downloading a parameter file at predetermined time intervals It is a welding power supply device with the output control parameter download function of Claim 1.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Below, Examples 1-4 as an embodiment of the present invention are explained with reference to drawings.
[Example 1]
The invention of Example 1 described below is It is an embodiment that serves as a reference for the present invention. . The invention of the first embodiment will be described below with reference to the drawings.
FIG. 5 is an overall configuration diagram of the welding power supply system with output control parameter / download function according to the first embodiment. In the figure, welding power supply devices DPS1, DPS2,... DPSn and WWW server SV with output control parameter / download function of the present invention are connected to the Internet. A method for connecting the welding power source device DPS to the Internet will be described later with reference to FIG. The domain name of the WWW server SV is “aaa.co.jp” (provisional name).
[0025]
As described above, the user requests the manufacturer for an output control parameter data string corresponding to the welding condition for the specific application in order to perform good welding under the welding condition for the specific application that is not the standard welding condition. The requested manufacturer calculates an output control parameter data string corresponding to the welding condition for the specific application through experiments. The procedure so far is the same as the conventional one.
[0026]
Next, the manufacturer creates an output control parameter file in a predetermined file format describing the calculated output control parameter data string. An example of this output control parameter file is shown in FIG. This figure exemplifies a case where the welding condition for a specific application is “pulse arc welding of a titanium alloy using a welding wire having a diameter of 1.2 mm”. The file format of this output control parameter file is normally created in HTML format. Therefore, the file name is “111.htm”. “111” is an arbitrary number assigned in correspondence with the welding condition for the specific application.
[0027]
This output control parameter file 111. In the first line of htm, “file format” is described. This is because the format of the output control parameter data string differs depending on the type of the welding power source apparatus, and is therefore distinguished. In the drawing, it is shown that the output control parameter data string is described according to a predetermined file format “CPDP”. Output control parameter file 111. In the second line of htm, an output control parameter data string calculated corresponding to the above-mentioned welding conditions for the specific application is described as a “data string”. In the figure, the set values of the welding condition number 06, the first unit constant a6, the second unit constant b6, the peak current Ip6, the base current Ib6, and the peak period Tp6 are shown. Further, the output control parameter file 111. In the third line of htm, the welding conditions for the specific application corresponding to this file are described as “Application”.
[0028]
As described above, the output control parameter file 111. html is created. The created output control parameter file 111. htm is uploaded to a predetermined address on the WWW server SV described above with reference to FIG. Here, this output control parameter file 111. It is assumed that the predetermined address to which htm is uploaded is “http://www.aaa.co.jp/opp/” by the domain name described above. Therefore, the output control parameter file 111. The file designation address Adr for downloading the html is “http://www.aaa.co.jp/opp/111.htm”.
[0029]
In the welding power source DPS with output control parameter / download function shown in FIG. 5, the output control parameter file 111. Download html from the WWW server SV via the Internet. Hereinafter, this download method will be described.
[0030]
FIG. 7 is a block diagram of the welding power supply device DPS with output control parameter / download function of the first embodiment. In this figure, the same circuit blocks as those in FIG. 4 described above are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, a file selection switch FS, an address generation circuit MA, an Internet connection interface circuit IIF, a download start switch DS, and a format conversion circuit FC, which are circuit blocks indicated by dotted lines different from those in FIG. 4, will be described with reference to FIG.
[0031]
The name (file number) of the output control parameter file to be downloaded is selected by the file selection switch FS. A file selection signal Fs is output from the file selection switch FS. In the example described above, “111” is selected by the file selection switch FS. As a result, the value of the file selection signal Fs is “111”. Generally, this file selection switch FS is provided on the panel of the welding power source apparatus.
[0032]
The address generation circuit MA outputs a file designation address signal Adr based on the file selection signal Fs and a file storage address on a predetermined WWW server SV. In the above example, the file storage address is “http://www.aaa.co.jp/opp/”, and the file selection signal Fs is “111”, so the file designation address signal Adr is “http: // www.aaa.co.jp/opp/111.htm ".
[0033]
The internet connection interface circuit IIF connects to the internet. This connection form may be either wired or wireless. In the case of wireless connection, a PC card having functions such as a mobile phone and PHS can be used as the Internet connection interface circuit IIF. When the download start switch DS is switched to the start side, the Internet connection interface circuit IIF accesses the WWW server SV on the Internet designated by the file designation address signal Adr and is designated by the file designation address signal Adr. Download the output control parameter file Fop. In general, the download start switch DS is provided on the panel of the welding power source apparatus.
[0034]
The format conversion circuit FC converts the downloaded output control parameter file Fop into an output control parameter data string Dop having a predetermined format to be used for output control of the welding power source device, and stores the predetermined output control parameter file Fop in the memory element MEM. Save to storage area. In the example described above, the output control parameter file Fop = 111. The html is downloaded and converted into the format of the data string (06, a6, b6, Ip6, Ib6, Tp6) described in the second line of the file shown in FIG. 6, and the storage area of the storage element shown in FIG. Added to 06.
[0035]
When welding is performed under a specific application welding condition, the optimum output control parameter data string is set by setting the above-described welding condition selection switch NS to “06”, and good welding can be performed. it can.
[0036]
In this welding power supply DPS with output control parameter / download function, the file name (file number) of the output control parameter file Fop corresponding to the welding condition of the specific use requested by the user is notified by telephone or the like, and the file name Is selected by the file selection switch FS provided on the panel of the welding power source device, and the download start switch DS provided on the panel of the welding power source device is switched to the start side. Will be downloaded. Therefore, since the download operation is very simple, it is not necessary for the service engineer of the manufacturer to visit the site as in the conventional case, and the time is shortened and efficient.
[0037]
[Example 2]
The invention of Example 2 is In the invention of the first embodiment described above, the downloaded and format-converted output control parameter data string Dop is stored in the storage area of the storage element MEM corresponding to the selected welding condition number Ns and selected by the welding condition selection switch NS. This is a welding power supply device DPS with an output control parameter / download function for performing output control in accordance with the output control parameter data string Dop corresponding to the welding condition number Ns thus welded. The invention of the second embodiment will be described below with reference to the drawings.
[0038]
FIG. 8 is a block diagram of the welding power supply device DPS with output control parameter / download function of the second embodiment. In this figure, the same circuit blocks as those in FIG. 7 described above are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, a format conversion / selection storage area storage circuit FCN, which is a circuit block indicated by a dotted line different from FIG. 7, will be described with reference to FIG.
[0039]
The format conversion / selection storage area storage circuit FCN converts the downloaded output control parameter file Fop into an output control parameter data string Dop having a predetermined format for use in the output control of the welding power source, and selects welding conditions. The data is stored in a predetermined storage area of the storage element MEM corresponding to the welding condition number signal Ns selected by the switch NS. In the example described above, the output control parameter file Fop = 111. html is downloaded and converted into the format of the data string (06, a6, b6, Ip6, Ib6, Tp6) described in the second line of the file shown in FIG. When the welding condition number signal Ns = 7 is selected, the output control parameter data string Dop is added to the storage area 07 of the storage element shown in FIG.
[0040]
As described above, in the invention of the second embodiment, the downloaded and format-converted output control parameter data string Dop can be stored in the storage area of the storage element MEM corresponding to the desired welding condition number Ns. Therefore, since a plurality of downloaded output control parameter data strings Dop can be saved, good welding can be performed under many specific application welding conditions.
[0041]
[Example 3]
The invention of Example 3 is In the invention of the first embodiment described above, it is determined whether or not the downloaded output control parameter file Fop conforms to a predetermined file format, and if it does not conform, welding with an output control parameter and download function is prohibited. This is a power supply device DPS. The invention of Example 3 will be described below with reference to the drawings.
[0042]
FIG. 9 is a block diagram of a welding power supply device DPS with output control parameter / download function of the third embodiment. In this figure, the same circuit blocks as those in FIG. 7 described above are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, the format determination circuit CH and the output control start / inhibition circuit ONF, which are circuit blocks indicated by dotted lines different from those in FIG. 7, will be described with reference to FIG.
[0043]
The format discriminating circuit CH discriminates whether or not the downloaded output control parameter file Fop conforms to a predetermined file format, and outputs a format discriminating signal Ch that becomes High level when it does not conform. In the above example, as shown in FIG. 6, the downloaded output control parameter file Fop = 111. It is determined whether the file format “CPDP” described in the first line of htm corresponds to a conforming file format predetermined in the format determination circuit CH.
[0044]
The output control start / inhibition circuit ONF outputs an output control start signal On when the welding start signal St from the outside is input and the format determination signal Ch is at a low level (conformity). Therefore, when the format determination signal Ch is at a high level (non-conforming), the output control start signal On is not output, and the start of welding is prohibited.
[0045]
As described above, in the invention of the third embodiment, if the downloaded output control parameter file Fop does not conform to a file format predetermined for each model of the welding power supply device, an alarm is displayed and welding is performed although not shown. Therefore, it is possible to prevent the occurrence of abnormal power control in accordance with the non-conforming output control parameter data string Dop, resulting in failure of the welding power supply device, poor welding quality, and the like. .
[0046]
[Example 4]
The invention of Example 4 is In the invention of the first embodiment described above, when the download start switch DS is switched to the start side, it accesses the WWW server SV on the Internet designated by the file designation address Adr, and is designated by the file designation address Adr. This is a welding power supply DPS with an output control parameter / download function that repeatedly downloads an output control parameter file Fop at predetermined time intervals Ts. The invention of Embodiment 4 will be described below with reference to the drawings.
[0047]
FIG. 10 is a block diagram of a welding power supply device DPS with output control parameter / download function of the fourth embodiment. In this figure, the same circuit blocks as those in FIG. 7 described above are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, the download time interval setting circuit TD and the Internet connection interface / repetitive download circuit IIFT, which are circuit blocks indicated by dotted lines different from those in FIG. 7, will be described with reference to FIG.
[0048]
The download time interval setting circuit TD outputs a predetermined download time interval setting signal Td.
When the download start switch DS is switched to the start side, the Internet connection interface / repeated download circuit IIFT accesses the WWW server SV on the Internet designated by the file designation address signal Adr and designates it by the file designation address signal Adr. The output control parameter file Fop is downloaded repeatedly at each download time interval Td.
[0049]
As described above, in the invention of the fourth embodiment, the output control parameter file Fop can be downloaded every download time interval Td, so that the latest output control parameter file Fop can always be automatically downloaded. This is often the case that the output control parameter file Fop corresponding to a welding condition of a specific application is improved and updated to a better output control parameter every day. In such a case, the above function can make the download operation easier.
[0050]
【The invention's effect】
In the welding power supply device with output control parameter / download function of the present invention, an output control parameter file corresponding to a welding condition for a specific application can be downloaded by a simple operation and additionally stored in a built-in storage element. Therefore, it is not necessary for the manufacturer's service engineer to go to the site to perform the addition work of the output control parameter as in the prior art, and the time required for adding the output control parameter is greatly reduced.
Furthermore, in the invention of Embodiment 2, the output control parameter data string that has been downloaded and subjected to format conversion can be stored in the storage area of the storage element corresponding to the desired welding condition number. Therefore, since a plurality of downloaded output control parameter data strings can be stored, good welding can be performed under many specific application welding conditions.
Furthermore, in the invention of the third embodiment, when the downloaded output control parameter file does not conform to a file format predetermined for each model of the welding power supply device, an alarm is displayed and the start of welding is prohibited. it can.
Furthermore, since the output control parameter file can be downloaded at every download time interval in the invention of the fourth embodiment, the latest output control parameter file can always be automatically downloaded.
[Brief description of the drawings]
Fig. 1 Current / voltage waveform diagram of pulse arc welding
FIG. 2 is a block diagram of a welding power source device according to prior art 1;
FIG. 3 is a memory configuration diagram of a memory element.
FIG. 4 is a block diagram of a welding power source device of prior art 2;
FIG. 5 is an overall system configuration diagram of the present invention.
FIG. 6 shows an example of an output control parameter file.
FIG. 7 is a block diagram of a welding power source apparatus according to the first embodiment.
FIG. 8 is a block diagram of a welding power source apparatus according to a second embodiment.
FIG. 9 is a block diagram of a welding power source apparatus according to a third embodiment.
FIG. 10 is a block diagram of a welding power source apparatus according to a fourth embodiment.
[Explanation of symbols]
1 Welding wire
2 Workpiece
3 Arc
4 Welding torch
5a Feeding roll of wire feeding device
a, b unitary constant
Adr File designation address (signal)
CH format discrimination circuit
Ch format discrimination signal
Dop output control parameter data string
DPS welding control unit with output control parameters and download function
DS download start switch
FC format conversion circuit
FCN format conversion / selection storage area storage circuit
Fop output control parameter file
FS file selection switch
Fs file selection signal
Ib Base current (setting signal)
IIF Internet connection interface circuit
IIFT Internet connection interface and repeated download circuit
INV output control circuit
IO I / O circuit
Ip peak current (setting signal)
IS current setting circuit
Is current setting signal
Iw Output current
MA address generation circuit
MEM memory element
NS Welding condition selection switch
Ns Welding condition number signal
ON output control start circuit
On output control start signal
PC personal computer
PS welding power supply
ROM read-only memory element
RS communication interface circuit
ST Welding start circuit
St welding start signal
SV WWW server
Tb base period
TD download time interval setting circuit
Td Download time interval (setting signal)
Tp peak period (setting signal)
Vb Base voltage
Vp peak voltage
Vs Uniform voltage setting (value / signal)
Vw output voltage
WC wire feed control circuit
Wc Feed control signal
WM wire feed motor

Claims (3)

A file selection switch for selecting the output control parameter file name to be downloaded, address generation means for generating a file designation address from the selected output control parameter file name and a predetermined domain name, and download for starting the download When the start switch and the download start switch are switched to the start side, an Internet connection for accessing the WWW server on the Internet designated by the file designation address and downloading the output control parameter file designated by the file designation address The interface means and the output control parameter file in a predetermined format for using the downloaded output control parameter file for the output control of the welding power source. And format conversion means for converting the data string, a welding condition selecting switch for selecting the welding condition number, and storage means for storing said output control parameter data string storage area corresponding to the selected welding condition number A welding power supply device with an output control parameter and download function that performs welding according to the output control parameter data string corresponding to the welding condition number selected by the welding condition selection switch . The welding with an output control parameter / download function according to claim 1, further comprising: a format discrimination means for discriminating whether the downloaded output control parameter file conforms to a predetermined file format . Power supply. When the internet connection interface means switches the download start switch to the start side, it accesses a WWW server on the Internet designated by the file designation address, and sets the output control parameter file designated by the file designation address for a predetermined time. 2. The welding power supply apparatus with output control parameter / download function according to claim 1, which is an Internet connection interface means for repeatedly downloading at intervals .

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