CN109514053A - Welding system - Google Patents
Welding system Download PDFInfo
- Publication number
- CN109514053A CN109514053A CN201810991654.3A CN201810991654A CN109514053A CN 109514053 A CN109514053 A CN 109514053A CN 201810991654 A CN201810991654 A CN 201810991654A CN 109514053 A CN109514053 A CN 109514053A
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- CN
- China
- Prior art keywords
- protective gas
- welding torch
- welding
- mentioned
- solenoid valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
-
- 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
- B23K9/325—Devices for supplying or evacuating shielding gas
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention provides welding system, suitable for solenoid valve to be set to in the welding system of protective gas flow path the reduction for improving weld job efficiency.Welding system (A1) of the invention has: welding torch (1)；To the wire feed unit (2) of welding torch (1) feeding welding wire；The protective gas for providing protective gas to welding (1) provides source (5)；Protective gas is set to flow to the protective gas flow path (6) of welding torch (1) via wire feed unit (2) from protective gas offer source (5)；With the solenoid valve (7) for being set to wire feed unit (2), being opened and closed protective gas flow path (6); in protective gas flow path (6), check-valves (8) are set; it allows gas to provide source (5) effluent to welding torch (1) side from protective gas, and gas is prevented to provide source (5) side from welding torch (1) effluent to protective gas.
Description
Technical field
The present invention relates to the welding systems for carrying out consutrode gas protective arc welding.
Background technique
Welding wire is fed when carrying out consutrode gas protective arc welding, such as from wire feed unit to welding torch, and
Protective gas is provided to welding torch.Protective gas is from such as gas pump (protective gas offer source) via wire feed unit by logical
Hose (protective gas flow path) to welding torch is supplied to welding torch.In addition, being used for switch protecting gas in wire feed unit setting
The solenoid valve of the opening and closing of flow path.The opening and closing of the above-mentioned solenoid valve of switching of beginning and stopping linkage with weld job.That is, if connecting
The switch of welding torch, then solenoid valve is opened, and protective gas is supplied to welding torch, if disconnecting the switch of welding torch, solenoid valve is closed, protection
The offer of gas stops (such as referenced patent document 1).According to such composition, the air after the stopping of weld job can be prevented
It is mixed into the protective gas flow path of the upstream side (providing source close to protective gas) of solenoid valve, and can be compared at the beginning of weld job
Protective gas is relatively rapidly provided.
The protective gas for providing source offer from protective gas is adjusted to relatively high pressure and is sent by pressure regulator
To protective gas flow path.When weld job starts, solenoid valve is instantaneously opened, instantaneously violent with the protective gas that high pressure conditions accumulate
It is strong to flow to welding torch side, to prominent stream occur.If causing the prominent stream, the quality of arc welding becomes unstable, therefore until steady
Surely the pre- stream time until providing protective gas is elongated, can incur the reduction of weld job efficiency.
In addition, though solenoid valve is arranged in wire feed unit, but in the state that solenoid valve is closed, from solenoid valve
The protective gas flow path in (wire feed unit) to welding torch (i.e. the downstream side of solenoid valve) can be mixed into air.If under solenoid valve
The protective gas flow path of trip side is mixed into air, will be at the beginning of weld job in the base for stablizing offer protective gas to welding torch
Becoming obstruction on plinth will be because the pre- stream time can be elongated.
Existing technical literature
Patent document
Patent document 1:JP special open 2011-45889 bulletin
Summary of the invention
The present invention proposes that major subjects are on the basis of such thing, provides and is set to protective gas in solenoid valve
It is suitable for improving the welding system of the efficiency of weld job in the welding system of flow path.
In order to solve above-mentioned problem, following technological means is used in the present invention.
Welding system provided by the present invention is characterized in that having: welding torch；To the welding wire feeding of above-mentioned welding torch feeding welding wire
Device；The protective gas for providing protective gas to above-mentioned welding torch provides source；Make protective gas provide source from above-mentioned protective gas to pass through
Cross the protective gas flow path that above-mentioned wire feed unit flows to above-mentioned welding torch；Be set to above-mentioned wire feed unit, opening and closing it is above-mentioned
The solenoid valve of protective gas flow path is provided with check-valves in above-mentioned protective gas flow path, allows gas from above-mentioned protective gas
Source is provided and flows to above-mentioned welding torch side, and gas is prevented to provide source from above-mentioned welding torch effluent to above-mentioned protective gas.
In a preferred embodiment, above-mentioned check-valves is arranged in than above-mentioned solenoid valve closer to the position of above-mentioned welding torch.
In a preferred embodiment, the work differential pressure of above-mentioned check-valves is 0.01~0.15MPa.
Other features of the invention and advantage can be become to define by the detailed description of following progress with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the schematic structural diagram for indicating an example of welding system according to the present invention.
The explanation of appended drawing reference
A1 welding system
W welding wire
1 welding torch
10 handles
2 wire feed units
3 welding torch side feed arrangements
4 power supply devices
41 power lines
42 power lines
5 protective gas provide source
51 pressure regulators
6 protective gas flow paths
7 solenoid valves
8 check-valves
Specific embodiment
The preferred embodiments of the present invention is illustrated below with reference to attached drawing.
Fig. 1 is the schematic structural diagram for indicating an example of welding system of embodiments of the present invention.The weldering of present embodiment
Welding system A1 has: welding torch 1, wire feed unit 2, welding torch side feed arrangement 3, power supply device 4, protective gas provide source 5, protect
Gas flow path 6, solenoid valve 7 and check-valves 8 are protected, is configured to execute consutrode gas protective arc welding.
Welding torch 1 uses to carry out weld job.In the welding system A1 of present embodiment, by wire feed unit
Welding wire W is fed into welding torch 1 by 2.Welding wire W is wound on the wire reel for being attached to wire feed unit 2 (diagram is omited).If welding wire W
It is fed to welding torch 1, then welding wire W is fed to the ignition tip for the leading end side inner for being set to welding torch 1, from the front end of welding torch 1
Opening is sent to outside.In addition, providing electric power via power line 41 from power supply device 4 to welding torch 1, the electric power is via welding torch 1
Internal power supply chip is provided to welding wire W.
In the present embodiment, welding torch 1 for example shows structure used in semi-automatic welding.Welding torch 1, which has, is used for operation
The handle 10 that person holds, in the suitable place of handle setting switch (diagram is omited).
In the present embodiment, welding torch side feed arrangement 3 is set between wire feed unit 2 and welding torch 1.Welding torch side into
It is arranged in by the relative proximity of welding torch 1 to device 3.Welding torch side feed arrangement 3 is carried out between wire feed unit 2 and welding torch 1
Relay the welding wire feeding speed for facilitating extremely meticulously to adjust to draw the so-called drawing side feed arrangement of welding wire W to welding torch 1
Degree.
Protective gas provides the gas tank that source 5 is the protective gas provided when accommodating arc welding.As protective gas, such as
Using inert gases such as argon, helium, or it is mixed in these inert gases the mixed gas of carbon dioxide.
Protective gas flow path 6 is for making to provide the gas stream that the protective gas that source 5 is sent out flows to welding torch 1 from protective gas
Road.The pressure adjustment that the protective gas that source 5 is discharged is located near protective gas offer 5 gas vent of source is provided from protective gas
Device 51 is adjusted to desired pressure, is sent to protective gas flow path 6.The guarantor of excess pressure adjustment is carried out by pressure regulator 51
The offer pressure for protecting gas is, for example, 0.3~0.6MPa (meter pressure) degree.
As shown in Figure 1, protective gas flow path 6 leads to weldering via wire feed unit 2 and welding torch side feed arrangement 3
Torch 1, such as be made of the gas of given diameter with hose.In addition, for example being fed by welding torch side in the connection of wire feed unit 2
Device 3 leads to the pipeline cable (diagram is omited) of welding torch 1, and protective gas flow path 6 leads to welding torch 1 from wire feed unit 2 in the middle
Part and welding wire W and power line 41 together in be inserted in above-mentioned pipeline cable.
Solenoid valve 7 is set to the midway of protective gas flow path 6, the opening and closing of switch protecting gas flow path 6.In present embodiment
In, solenoid valve 7 is set in wire feed unit 2.The beginning and stopping linkage of solenoid valve 7 and weld job are to switch its opening and closing.
In the connection of solenoid valve 7 for providing the power line 42 of operating power from power supply device 4.After connecting the switch of welding torch 1, solenoid valve 7
It opens, protective gas is provided to welding torch 1, and after the switch for disconnecting welding torch 1, solenoid valve 7 is closed, and the offer of protective gas stops.
Check-valves 8 is set to the midway of protective gas flow path 6, and gas is allowed to provide source 5 (primary side) flow direction from protective gas
1 side of welding torch (secondary side), and prevent gas from flowing to protective gas from 1 side of welding torch (secondary side) and 5 side of source (primary side) is provided.Non-return
The work differential pressure (pressure difference of primary side and secondary side) of valve 8 is, for example, 0.01~0.15MPa.In addition, energy basis carrys out self-shield
All conditions such as the offer pressure of protective gas that gas provides 5 side of source allow check-valves 8 work differential pressure optimum value.As
The work differential pressure of check-valves 8, such as the case where be suitable for 0.05Mpa degree and the case where being suitable for 0.01MPa degree.Only
The work differential pressure for returning valve 8 corresponds to the intensity of built-in spring and changes.
The effect of present embodiment will be illustrated next.
In the welding system A1 of above structure, when carrying out arc welding, by connecting the switch of welding torch 1, to insert
The welding wire W power supply welding current of welding torch 1, and welding wire W is fed from wire feed unit 2 to welding torch 1.At the same time, solenoid valve 7 is beaten
It opens, provides protective gas to welding torch 1.When stopping weld job, if disconnecting the switch of welding torch 1, the feeding of welding wire W stops,
And solenoid valve 7 is closed, to stop providing protective gas to 1 side of welding torch.
In the present embodiment, protective gas flow path 6 is provided with check-valves 8.According to this structure, in weld job
At the beginning of, when solenoid valve 7 is opened, in check-valves 8, by the protective gas of high pressure provide 5 side of source (primary side) with it is low
The pressure difference of 1 side of welding torch (secondary side) of pressure and allow valve to open, protective gas by 1 side of welding torch send out.Here, due to check-valves
8 are more gently opened by the elastic force of spring, therefore inhibit the prominent stream occurred when solenoid valve 7 is opened.Therefore basis
Present embodiment provides protective gas to 1 immediate stability of welding torch at the beginning of weld job, pre- to flow time shortening.It is tied
Fruit can seek the improved efficiency of weld job.According further to present embodiment, break in the beginning and the stopping that repeating weld job
In the case where carrying out arc welding continuously, big improvement is contemplated that the efficiency of weld job.
In the present embodiment, check-valves 8 is arranged in than solenoid valve 7 closer to the position of welding torch 1.In stopping for weld job
When only, prevents gas from flowing to protective gas from 1 side of welding torch (secondary side) by check-valves 8 and 5 side of source (primary side) is provided.According in this way
Structure, can prevent from being mixed into than solenoid valve 7 closer to air on the position of welding torch 1 to protective gas flow path 6.This is suitable for welding
It connects and provides protective gas to 1 immediate stability of welding torch at the beginning of operation, facilitate the improved efficiency of weld job.
Check-valves 8 is in addition also cheap generally than solenoid valve small-size light-weight.Even if it is different from present embodiment, such as than setting
In the solenoid valve 7 of wire feed unit 2 solenoid valve additional closer to the setting of 1 ground of welding torch, although the then reflux of expectability air
Prevent effect, but cannot fight each other open electromagnetic valve when prominent stream mitigated.In contrast, according to the present embodiment, by using
Check-valves 8 can prevent the reflux of the air when stopping of weld job, and can inhibit the protective gas at the beginning of weld job
Prominent stream.In addition, illustrating the case where check-valves 8 is set to welding torch side feed arrangement 3 in the present embodiment, but for example can also be with
The position closer to welding torch 1 is arranged in check-valves 8.Due to 8 small-size light-weight of check-valves, the handle of welding torch 1 can also be set to
Hand 10.
In the present embodiment, the work differential pressure of check-valves 8 is 0.01~0.15MPa.According to this structure, in weld job
At the beginning of, solenoid valve 7 open and the primary side of check-valves 8 become compare high pressure conditions when, check-valves 8 by appropriateness bullet
The elastic force of spring and be expected to gently open
Embodiments of the present invention are explained above, but the scope of the present invention is not limited to above-mentioned embodiment, remember
Whole changes in the range of the item of each claim are loaded in be all completely contained in the scope of the present invention.In above embodiment
In, check-valves 8, which is arranged in, to be arranged but it is also possible to be check-valves 8 more than solenoid valve 7 than solenoid valve 7 closer to the position of welding torch 1
The structure of the position (solenoid valve 7 and protective gas are provided between source 5) in source 5 is provided close to protective gas.Exist in the setting of check-valves 8
Than solenoid valve 7 closer to protective gas provide source 5 position in the case where, in the stopping of weld job, check-valves 8 it is primary
The pressure difference ends of side and secondary side, check-valves 8 become the state closed.At the beginning of weld job later, in electromagnetism
The moment that valve 7 is opened generates pressure difference, the elastic force that check-valves 8 passes through spring between the primary side and secondary side of check-valves 8
And it more gently opens.Therefore, the position in source 5 is provided closer to protective gas than solenoid valve 7 even if being arranged in check-valves 8
In the case where, it can also expect the effect for the prominent stream for inhibiting solenoid valve 7 to generate when opening.
Claims (3)
1. a kind of welding system, which is characterized in that have:
Welding torch；
To the wire feed unit of above-mentioned welding torch feeding welding wire；
The protective gas for providing protective gas to above-mentioned welding torch provides source；
So that protective gas is provided source from above-mentioned protective gas and passes through the protective gas that above-mentioned wire feed unit flows to above-mentioned welding torch
Flow path；With
Set on above-mentioned wire feed unit, the solenoid valve of the above-mentioned protective gas flow path of opening and closing,
Above-mentioned protective gas flow path is provided with check-valves, allows gas to provide source from above-mentioned protective gas and flows to above-mentioned weldering
Torch side, and gas is prevented to provide source from above-mentioned welding torch effluent to above-mentioned protective gas.
2. welding system according to claim 1, which is characterized in that
Above-mentioned check-valves is arranged in than above-mentioned solenoid valve closer to the position of above-mentioned welding torch.
3. welding system according to claim 1 or 2, which is characterized in that
The work differential pressure of above-mentioned check-valves is 0.01~0.15MPa.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017178601A JP2019051546A (en) | 2017-09-19 | 2017-09-19 | Welding system |
| JP2017-178601 | 2017-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109514053A true CN109514053A (en) | 2019-03-26 |
Family
ID=65770680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810991654.3A Pending CN109514053A (en) | 2017-09-19 | 2018-08-28 | Welding system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019051546A (en) |
| CN (1) | CN109514053A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10537958B2 (en) | 2016-08-15 | 2020-01-21 | Illinois Tool Works Inc. | System and method for controlling shielding gas flow in a welding device |
| US11938574B2 (en) * | 2021-01-22 | 2024-03-26 | Illinois Tool Works Inc. | Gas surge prevention using improved flow regulators in welding-type systems |
| US11801482B2 (en) | 2021-02-17 | 2023-10-31 | Illinois Tool Works Inc. | Mixing fluids in welding-type equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920966U (en) * | 1982-07-30 | 1984-02-08 | 三菱電機株式会社 | automatic welding equipment |
| JP2009506893A (en) * | 2005-09-09 | 2009-02-19 | フロニウス・インテルナツィオナール・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Welding torch, welding head, gas nozzle, contact pipe and post-weld process control method |
| CN104722892A (en) * | 2015-03-23 | 2015-06-24 | 苏州登丰泵业有限公司 | Welding protection method for stainless steel assembly and gas proportion mixing device |
| CN204639392U (en) * | 2015-04-01 | 2015-09-16 | 大连中鼎化学有限公司 | Argon gas feed system is used in argonaut welding protection |
| WO2017057400A1 (en) * | 2015-09-28 | 2017-04-06 | 大陽日酸株式会社 | Gas supply device, gas supply device having mixing function, welding device, and gas supply method |
| CN206405581U (en) * | 2017-01-23 | 2017-08-15 | 西南交通大学 | A kind of welding protection gas concentrates mixed gas supply system |
-
2017
- 2017-09-19 JP JP2017178601A patent/JP2019051546A/en active Pending
-
2018
- 2018-08-28 CN CN201810991654.3A patent/CN109514053A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920966U (en) * | 1982-07-30 | 1984-02-08 | 三菱電機株式会社 | automatic welding equipment |
| JP2009506893A (en) * | 2005-09-09 | 2009-02-19 | フロニウス・インテルナツィオナール・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Welding torch, welding head, gas nozzle, contact pipe and post-weld process control method |
| CN104722892A (en) * | 2015-03-23 | 2015-06-24 | 苏州登丰泵业有限公司 | Welding protection method for stainless steel assembly and gas proportion mixing device |
| CN204639392U (en) * | 2015-04-01 | 2015-09-16 | 大连中鼎化学有限公司 | Argon gas feed system is used in argonaut welding protection |
| WO2017057400A1 (en) * | 2015-09-28 | 2017-04-06 | 大陽日酸株式会社 | Gas supply device, gas supply device having mixing function, welding device, and gas supply method |
| CN206405581U (en) * | 2017-01-23 | 2017-08-15 | 西南交通大学 | A kind of welding protection gas concentrates mixed gas supply system |
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| JP2019051546A (en) | 2019-04-04 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190326 |
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