CN202639601U - Alternating-current direct-current tungsten inert gas (TIG) automatic welding arc-voltage tracking system - Google Patents
Alternating-current direct-current tungsten inert gas (TIG) automatic welding arc-voltage tracking system Download PDFInfo
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- CN202639601U CN202639601U CN 201220224840 CN201220224840U CN202639601U CN 202639601 U CN202639601 U CN 202639601U CN 201220224840 CN201220224840 CN 201220224840 CN 201220224840 U CN201220224840 U CN 201220224840U CN 202639601 U CN202639601 U CN 202639601U
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Abstract
The utility model discloses an alternating-current direct-current tungsten inert gas (TIG) automatic welding arc-voltage tracking system, mainly relates to an automatic welding tracking control technique, and particularly relates to the technical field of the alternating-current direct-current TIG automatic welding arc-voltage tracking system. According to the alternating-current direct-current TIG automatic welding arc-voltage tracking system, an output voltage signal of an alternating-current direct-current TIG welding power supply is converted into a direct-current voltage signal through a rectifier bridge module; an acquired real-time analog voltage value is transmitted to a programmable logic controller (PLC) motion controller through a middle relay, an isolation transformer and an analog to digital (A / D) module; by means of the PLC motion controller, the acquired voltage value and an arc-voltage value set on a human machine interface (HMI) are converted and compared, a comparison result is transmitted to an actuating motor driver, and then an actuating motor is controlled; and the actuating motor drives a welding gun to move through a welding gun moving sliding frame, and therefore the distance between a tungsten electrode sharp end of the TIG welding gun to a workpiece welding joint surface is guaranteed to always remain in a set permission value range of a process. The alternating-current direct-current TIG automatic welding arc-voltage tracking system has the advantages of being high in control precision and capable of being compatible in an alternating-current direct-current double-use power supply, ensuring welding quality, improving welding efficiency, reducing equipment failures, and reducing operation cost.
Description
Technical field
The utility model relates to the automatic welding tracking control technology, relates in particular to a kind of technical field of AC and DC TIG automatic welding arc voltage tracking system.
Background technology
In the TIG welding process, welding gun welds along the weld seam path of setting all the time, if obtain good welding quality, must guarantee has stable arc voltage in welding process, this just requires, and welding gun tungsten electrode is most advanced and sophisticated to be remained within certain technique License Value scope with the face of weld distance, but owing in welding process, there is welding deformation, the problems such as the surface of the work flatness is inconsistent, common welding equipment can not guarantee that welding gun tungsten electrode tip and surface of the work distance remain within certain technique License Value scope, must satisfy welding requirements by the up and down stroke adjustment of tracking device for welding Butt welding gun.What the adjustment control of existing tracking device for welding Butt welding gun position was adopted usually is the stepper motor open-loop control technology, and the adjustment control accuracy of Butt welding gun is lower, can not satisfy the requirement of high-quality welding; Simultaneously, existing welding tracking equipment can not the dual-purpose source of welding current of compatible AC and DC, has certain limitation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of AC and DC TIG automatic welding arc voltage tracking system is provided, native system adopts the servo control technology of closed-loop control, control accuracy is high, can guarantee that TIG welding gun tungsten electrode tip remains within the technique License Value scope of setting with workpiece face of weld distance in welding process, simultaneously can the dual-purpose source of welding current of compatible AC and DC, thereby weldquality and production efficiency have been improved, effectively avoid equipment fault, reduce operating cost.
A kind of AC and DC TIG automatic welding arc voltage tracking system comprises that HMI interface, PLC motion controller, motor servo driver, servomotor, welding gun move balladeur train, rectifier bridge module, auxiliary reclay, isolating transformer, A/D module.The input of described rectifier bridge module is connected with the AC and DC TIG source of welding current, output is connected with auxiliary reclay, isolating transformer, A/D sequence of modules, the A/D module is connected by the input of data cable with the PLC motion controller, gathers real-time Simulation amount voltage signal and is sent to the PLC motion controller when welding; The output of described PLC motion controller is connected with motor servo driver, and described motor servo driver drives servomotor, and servomotor control welding gun moves balladeur train and does rectilinear motion; The TIG welding gun is installed in welding gun and moves on the balladeur train, thereupon motion.
Described HMI interface is connected with the PLC motion controller, is used for setting the related process parameters such as arc voltage, arc length.
Described TIG welding gun and workpiece are connected with the AC and DC TIG source of welding current, and the TIG welding gun forms the closed-loop path by workpiece and the AC and DC TIG source of welding current.
Produce larger voltage pulsation when preventing the TIG welding starting the arc, cause damage and the sampling of isolating transformer, A/D module to follow the tracks of inefficacy, native system is provided with an auxiliary reclay, described auxiliary reclay is with two contacts, and two contacts is connected in series with respectively in the loop of input of the output of rectifier bridge module and isolating transformer; The break-make of auxiliary reclay is carried out programme-control by the PLC motion controller.
Voltage signal when welding for accurately gathering TIG, the input impedance of described isolating transformer is 1～10M Ω.
During the utility model work: hand over, the output voltage signal that DC TIG welding connects power supply converts d. c. voltage signal to by rectifier bridge module, work as friendship, DC TIG welding connects when the time interval reaches the time of setting after the power supply starting the arc, control program triggers the auxiliary reclay action, its closing of contact, isolating transformer and rectifier bridge module conducting, the A/D module begins to carry out the arc voltage sampling, and the real-time Simulation amount magnitude of voltage that collects transferred to the PLC motion controller, the internal arithmetic program of PLC motion controller will gather the magnitude of voltage of returning and change comparison in the arc voltage value of HMI interface setting, and comparative result is transferred to motor servo driver, and then servomotor controlled, servomotor moves balladeur train drive welding gun by welding gun and moves, adjust the distance between TIG welding gun and the workpiece weld seam, thereby the most advanced and sophisticated distance to the workpiece face of weld of tungsten electrode that guarantees the TIG welding gun remains within the technique License Value scope of setting.
The utlity model has the control accuracy height, can the dual-purpose source of welding current of compatible AC and DC, guarantee welding quality, improve welding efficiency, reduce equipment fault, reduce the advantage of operating cost.
Description of drawings
Fig. 1 is the theory diagram of the utility model system architecture.
Fig. 2 is the utility model TIG welding gun, the AC and DC TIG source of welding current, workpiece connection diagram.
Wherein: 1, HMI interface; 2, PLC motion controller; 3, motor servo driver; 4, servomotor; 5, welding gun moves balladeur train; 6, TIG welding gun; 7, rectifier bridge module; 8, auxiliary reclay; 9, isolating transformer; 10, A/D module; 11, the AC/DC TIG source of welding current; 12, workpiece.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, a kind of AC and DC TIG automatic welding arc voltage tracking system is characterized in that comprising that HMI interface 1, PLC motion controller 2, motor servo driver 3, servomotor 4, welding gun move balladeur train 5, rectifier bridge module 7, auxiliary reclay 8, isolating transformer 9, A/D module 10.Described rectifier bridge module 7 inputs are connected with the AC and DC TIG source of welding current 11, output and auxiliary reclay 8, isolating transformer 9, A/D module 10 are linked in sequence, A/D module 10 is connected by the input of data cable with PLC motion controller 2, gathers real-time Simulation amount voltage signal and is sent to PLC motion controller 2 when welding; The output of described PLC motion controller 2 is connected with motor servo driver 3, and described motor servo driver 3 drives servomotor 4, and servomotor 4 control welding guns move balladeur train 5 and do rectilinear motion; TIG welding gun 6 is installed in welding gun and moves on the balladeur train 5, thereupon motion.
As shown in Figure 1, described HMI interface 1 is connected with PLC motion controller 2, is used for setting the related process parameters such as arc voltage, arc length.
As shown in Figure 2, described TIG welding gun 6 and workpiece 12 are connected with the AC and DC TIG source of welding current 11, and TIG welding gun 6 forms the closed-loop path by workpiece 12 and the AC and DC TIG source of welding current 11.
Produce larger voltage pulsation when preventing the TIG welding starting the arc, cause damage and the sampling of isolating transformer 9, A/D module 10 to follow the tracks of inefficacy, native system is provided with an auxiliary reclay 8, described auxiliary reclay 8 is with two contacts, and two contacts is connected in series with respectively in the loop of input of the output of rectifier bridge module 7 and isolating transformer 9; The break-make of auxiliary reclay 8 is carried out programme-control by PLC motion controller 2.
Voltage signal when welding for accurately gathering TIG, the input impedance of described isolating transformer 9 is 1～10M Ω.
Before the utility model work, elder generation is 1 setting arc voltage (or arc length) value, starting the arc surge protection time at the HMI interface.During work, rectifier bridge module 7 will be handed over, the output voltage signal that DC TIG welding connects power supply 11 converts d. c. voltage signal to, when the time reaches 1S after 11 starting the arc of the TIG source of welding current, control program triggers auxiliary reclay 8 actions, its closing of contact, isolating transformer 9 and rectifier bridge module 7 conductings, A/D module 10 begins to carry out the arc voltage sampling, and the real-time Simulation amount magnitude of voltage that collects transferred to PLC motion controller 2, the internal arithmetic program of PLC motion controller 2 is changed comparison with gathering the magnitude of voltage of returning with the arc voltage value of 1 setting at the HMI interface, and comparative result is transferred to motor servo driver 3, and then servomotor 4 controlled, servomotor 4 moves balladeur train 5 drive TIG welding guns 6 by welding gun and moves up and down, adjust the distance between TIG welding gun 6 and workpiece 12 weld seams, thereby the most advanced and sophisticated distance to workpiece 12 faces of weld of tungsten electrode that guarantees TIG welding gun 6 remains within the technique License Value scope of setting.
The utlity model has the control accuracy height, can the dual-purpose source of welding current of compatible AC and DC, guarantee welding quality, improve welding efficiency, reduce equipment fault, reduce the advantage of operating cost.
Claims (3)
1. an AC and DC TIG automatic welding arc voltage tracking system is characterized in that comprising that HMI interface (1), PLC motion controller (2), motor servo driver (3), servomotor (4), welding gun move balladeur train (5), rectifier bridge module (7), auxiliary reclay (8), isolating transformer (9), A/D module (10); The input of described rectifier bridge module (7) is connected with the AC and DC TIG source of welding current (11), output and auxiliary reclay (8), isolating transformer (9), A/D module (10) are linked in sequence, and A/D module (10) is connected by the input of data cable with PLC motion controller (2); The output of described PLC motion controller (2) is connected with motor servo driver (3), and described motor servo driver (3) drives servomotor (4), and the control welding gun moves balladeur train (5) and does rectilinear motion; TIG welding gun (6) is installed in welding gun and moves on the balladeur train (5).
2. AC and DC TIG automatic welding arc voltage tracking system according to claim 1, it is characterized in that described auxiliary reclay (8) with two contacts, two contacts is connected in series with respectively in the loop of input of the output of rectifier bridge module (7) and isolating transformer (9); The break-make of auxiliary reclay (8) is carried out programme-control by PLC motion controller (2).
3. AC and DC TIG automatic welding arc voltage tracking system according to claim 1, the input impedance that it is characterized in that described isolating transformer (9) is 1～10M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224840 CN202639601U (en) | 2012-05-18 | 2012-05-18 | Alternating-current direct-current tungsten inert gas (TIG) automatic welding arc-voltage tracking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224840 CN202639601U (en) | 2012-05-18 | 2012-05-18 | Alternating-current direct-current tungsten inert gas (TIG) automatic welding arc-voltage tracking system |
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| CN202639601U true CN202639601U (en) | 2013-01-02 |
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| CN 201220224840 Expired - Fee Related CN202639601U (en) | 2012-05-18 | 2012-05-18 | Alternating-current direct-current tungsten inert gas (TIG) automatic welding arc-voltage tracking system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971608A (en) * | 2017-12-29 | 2018-05-01 | 南京熊猫电子股份有限公司 | A kind of general arc voltage height-regulating device based on robot |
| CN109940247A (en) * | 2019-04-16 | 2019-06-28 | 成都焊研威达科技股份有限公司 | Integrated form arc length tracing control system and control method |
| CN110814469A (en) * | 2019-10-17 | 2020-02-21 | 南京工业大学 | Multi-mode automatic arc voltage regulation control system |
| CN114131144A (en) * | 2021-11-08 | 2022-03-04 | 南昌大学 | Welding real-time arc voltage control system and control method thereof |
-
2012
- 2012-05-18 CN CN 201220224840 patent/CN202639601U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971608A (en) * | 2017-12-29 | 2018-05-01 | 南京熊猫电子股份有限公司 | A kind of general arc voltage height-regulating device based on robot |
| CN109940247A (en) * | 2019-04-16 | 2019-06-28 | 成都焊研威达科技股份有限公司 | Integrated form arc length tracing control system and control method |
| CN110814469A (en) * | 2019-10-17 | 2020-02-21 | 南京工业大学 | Multi-mode automatic arc voltage regulation control system |
| CN114131144A (en) * | 2021-11-08 | 2022-03-04 | 南昌大学 | Welding real-time arc voltage control system and control method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA SHIPBUILDING INDUSTRY PENGLI (NANJING) INTEL Free format text: FORMER NAME: NANJING PRIDE TECHNOLOGY CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: Jiangning Development Zone in Nanjing City, Jiangsu province 211153 Evergreen Street No. 32 Patentee after: China Shipbuilding Heavy Industry (Nanjing) Intelligent Equipment Co., Ltd. Address before: 210003 Zhongshan North Road, Jiangsu, No. 346, Patentee before: Nanjing Pride Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20210518 |
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| CF01 | Termination of patent right due to non-payment of annual fee |