CN101696987B - Device for detecting voltage of TIG welding with high frequency striking arc - Google Patents
Device for detecting voltage of TIG welding with high frequency striking arc Download PDFInfo
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- CN101696987B CN101696987B CN2009102085465A CN200910208546A CN101696987B CN 101696987 B CN101696987 B CN 101696987B CN 2009102085465 A CN2009102085465 A CN 2009102085465A CN 200910208546 A CN200910208546 A CN 200910208546A CN 101696987 B CN101696987 B CN 101696987B
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Abstract
The invention relates to a device for detecting a voltage of TIG welding with high frequency striking arc. A welding current controls a relay to switch on or switch off the connection of the relay J with the output of the TIG welding, namely a current in a current sensor is utilized to control the relay J to actuate or switch off so as to switch on or switch off the connection between the output of a welding source and an LC filter to realize the device which directly detects the voltage of the TIG welding with the high frequency striking arc. The device for detecting the voltage of the TIG welding with the high frequency striking arc has the advantages of low failure rate, convenient installation and simplified connection between a welding source and welding equipment, and is mainly used on an automatic welding machine.
Description
Technical field
The present invention relates to a kind of voltage check device, especially a kind of device that is used to detect band high-frequency arc strike TIG weldering voltage.
Background technology
In automatic welding occasion,, generally all adopts the TIG source of welding current of being with high-frequency arc strike if when adopting the TIG weldering.But the manual TIG source of welding current, generally not tape welding connect voltage output interface (be not with high frequency output), if will mix the arc voltage Height-adjusting device on this automatic welding device, on touch-screen, show weldingvoltage, electric current etc., just must transform the TIG source of welding current, because can not directly be connected on TIG source of welding current both positive and negative polarity to sampling apparatus, otherwise in the striking of the TIG source of welding current in a flash, sampling apparatus is burnt.Wherein, TIG refers to gas tungsten arc welding (containing tungsten electrode Ar arc-welding)
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of device that is used to detect band high-frequency arc strike TIG weldering voltage is provided, can directly detect band high-frequency arc strike TIG weldering voltage, this device is mainly used in automatic welding occasion, be used for welding automatically weldingvoltage and show arc voltage Height-adjusting device input signal etc.
According to technical scheme provided by the invention, the described device that is used to detect band high-frequency arc strike TIG weldering voltage, comprise that the judgement that is connected with the output terminal of current sensor in the welding circuit has currentless PCB control panel, the output of described PCB control panel connects the control loop of relay, TIG weldering both positive and negative polarity output terminal is connected with the LC filter input end through relay contact, and the voltage on the LC filter output is TIG weldering output voltage.The parallel branch of resistance in series and inductance on TIG weldering both positive and negative polarity output terminal and circuit that relay contact is connected.
Connect filter capacitor between the positive-negative input end of described LC wave filter.
Described PCB control panel comprises that the current sampling circuit, signal amplification circuit, the electric current that connect successively have or not decision circuitry, and electric current has or not the output of decision circuitry to connect described relay by driving circuit.
Described PCB control panel also comprises the current display circuit that is connected with described signal amplification circuit.
Described PCB control panel comprises stabilized voltage supply, separately power supply.
Advantage of the present invention is: directly get the weldingvoltage signal at TIG weldering both positive and negative polarity, this weldingvoltage signal is transferred to arc voltage Height-adjusting device, PLC etc., makes automatic welding machine in welding process, and weldingvoltage, electric current etc. are controlled and monitored to weldingvoltage automatically; Failure rate is low, and is easy to connect, reduces the requirement of automatic welding device to the source of welding current, do not need manual TIG weldering to transform, and just can fit on the automatic welding device.
Description of drawings
Fig. 1 is user mode figure of the present invention.
Fig. 2 is an electrical schematic diagram of the present invention.
Fig. 3 is the circuit block diagram of PCB control panel.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
The present invention is by the welding current pilot relay, relay J is switched on or switched off and being connected that the TIG weldering is exported, utilize promptly that electric current has or not to come pilot relay J adhesive or disconnection in the current sensor, be switched on or switched off getting in touch between source of welding current output and the LC wave filter, realize a kind of device of direct detection band high-frequency arc strike TIG weldering voltage.As shown in Figure 1, the present invention directly gets the weldingvoltage signal at TIG weldering both positive and negative polarity, and this weldingvoltage signal is transferred to arc voltage Height-adjusting device, PLC etc.
As shown in Figure 2, TIG weldering both positive and negative polarity output terminal is connected with welding gun, workpiece, also is connected with the input end of this device simultaneously, and current sensor is enclosed within on the electrode line of welding machine.This device comprises that the judgement that is connected with the output terminal of current sensor in the welding circuit has currentless PCB control panel, and the output of described PCB control panel connects the control loop of relay, and TIG weldering both positive and negative polarity output terminal is connected with the LC wave filter through relay contact.The parallel branch (L1, R1 and L2, R2) of resistance in series and inductance connects filter capacitor between the positive-negative input end of described LC wave filter on TIG weldering both positive and negative polarity output terminal and circuit that relay contact is connected.Inductance wherein, resistance, electric capacity, LC wave filter mainly strobe, and make from the voltage of LC wave filter output to satisfy the arc voltage Height-adjusting device, and PLC etc. import requirement.
As shown in Figure 3: described PCB control panel comprises that the current sampling circuit, signal amplification circuit, the electric current that connect successively have or not decision circuitry, and electric current has or not the output of decision circuitry to connect described relay by driving circuit.Described PCB control panel also comprises the current display circuit that is connected with described signal amplification circuit.Described PCB control panel includes stabilized voltage supply, is powered separately by external power source.Welding current is transferred to current sampling circuit through current sensor, the current signal that collects amplifies through amplifying circuit, being input to electric current then has/no decision circuitry, when current signal, output signal, go to drive switching relay J action through overdrive circuit, make switching relay J contact on-off.
During the tig arc welding machine striking, owing to also when not setting up electric arc, do not have electric current to produce in the welding circuit, current sensor is output as zero, not adhesive of relay J, and TIG weldering output voltage and LC wave filter disconnect, the voltage that contains high-frequency signal can not be added on the LC wave filter, this device no-output voltage.After welding machine ignites arc, the source of welding current cuts off high frequency output automatically, there is electric current to produce in the welding circuit, current sensor has electric current output, welding current is after current sensor, the conversion of PCB control panel, drive the relay J adhesive, weldingvoltage is connected through relay contact and LC filter input end, voltage on the LC filter output just is TIG weldering output voltage (or claiming weldingvoltage) at this moment, this voltage can be used as the input signal of arc voltage Height-adjusting device on the automatic welding machine, PLC etc., satisfies the requirement of automatic welding machine to welding technology.
Claims (1)
1. be used to detect the device of band high-frequency arc strike TIG weldering voltage, comprise that the judgement that is connected with the output terminal of current sensor in the welding circuit has currentless PCB control panel, it is characterized in that: the output of described PCB control panel connects the control loop of relay, TIG weldering both positive and negative polarity output terminal is connected with the LC filter input end through relay contact, and the voltage on the LC filter output is TIG weldering output voltage;
Described PCB control panel comprises that the current sampling circuit, signal amplification circuit, the electric current that connect successively have or not decision circuitry, and electric current has or not the output of decision circuitry to connect described relay by driving circuit;
Described PCB control panel also comprises the current display circuit that is connected with described signal amplification circuit;
Described PCB control panel comprises stabilized voltage supply, separately power supply;
The parallel branch of resistance in series and inductance on TIG weldering both positive and negative polarity output terminal and circuit that relay contact is connected;
Connect filter capacitor between the positive-negative input end of described LC wave filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102085465A CN101696987B (en) | 2009-10-16 | 2009-10-16 | Device for detecting voltage of TIG welding with high frequency striking arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102085465A CN101696987B (en) | 2009-10-16 | 2009-10-16 | Device for detecting voltage of TIG welding with high frequency striking arc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101696987A CN101696987A (en) | 2010-04-21 |
| CN101696987B true CN101696987B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102085465A Active CN101696987B (en) | 2009-10-16 | 2009-10-16 | Device for detecting voltage of TIG welding with high frequency striking arc |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208722A (en) * | 2019-07-15 | 2019-09-06 | 珠海格力电器股份有限公司 | Device and method for detecting stability of direct current power supply |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200967113Y (en) * | 2006-10-11 | 2007-10-31 | 上海东宏电器厂 | Energy-saving safe electric welding machine |
| CN101077546A (en) * | 2006-05-24 | 2007-11-28 | 株式会社三社电机制作所 | Arc welding equipment and method |
| CN101362247A (en) * | 2008-10-09 | 2009-02-11 | 上海交通大学 | Gas shield tungsten electrode argon-arc welding voltage measurement circuit |
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2009
- 2009-10-16 CN CN2009102085465A patent/CN101696987B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077546A (en) * | 2006-05-24 | 2007-11-28 | 株式会社三社电机制作所 | Arc welding equipment and method |
| CN200967113Y (en) * | 2006-10-11 | 2007-10-31 | 上海东宏电器厂 | Energy-saving safe electric welding machine |
| CN101362247A (en) * | 2008-10-09 | 2009-02-11 | 上海交通大学 | Gas shield tungsten electrode argon-arc welding voltage measurement circuit |
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| Publication number | Publication date |
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| CN101696987A (en) | 2010-04-21 |
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Effective date of registration: 20150928 Address after: 214196 Sunshine Industrial Park, Donggang Town, Xishan District, Jiangsu, Wuxi, 8 Patentee after: JIANGSU DADE HEAVY INDUSTRY Co.,Ltd. Address before: 214196 Sunshine Industrial Zone, 26 West Tin Road, East Lake Town, Xishan District, Wuxi, Jiangsu Patentee before: Wuxi Nanfang Electrical Apparatus Manufacturing Co.,Ltd. |
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Address after: 214196 No. 28 South Garden Road, Xishan District, Jiangsu, Wuxi, Donggang Patentee after: JIANGSU DADE HEAVY INDUSTRY CO.,LTD. Address before: 214196 Sunshine Industrial Park, Donggang Town, Xishan District, Jiangsu, Wuxi, 8 Patentee before: JIANGSU DADE HEAVY INDUSTRY Co.,Ltd. |
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Effective date of registration: 20230906 Address after: No. 3 Development Road, New Materials Industrial Park, Donggang Town, Xishan District, Wuxi City, Jiangsu Province, 214196 Patentee after: Wuxi jukechuang Development Co.,Ltd. Address before: 214196 No. 28 yuan yuan Road, Donggang, Xishan District, Wuxi, Jiangsu. Patentee before: JIANGSU DADE HEAVY INDUSTRY CO.,LTD. |