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A twin-wire arc welding power supply system and its control method

A technology of a power supply system and a control method, applied in arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of inability to apply gas shielded welding, complex parameter adjustment, etc., and achieve stable output, simple parameter setting, and improved stability. Effect

Active Publication Date: 2016-11-30
南京东斯达机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The welding current output by the two power supply systems of the existing twin-wire arc welding machine is interdependent, and the parameter adjustment is complicated for different welding processes, and it cannot be applied to the low-cost CO 2 For the problem of gas shielded welding, the present invention provides a twin-wire arc welding power supply system and its control method, which can effectively control the two sets of power supply systems to output constant inverter pulsating DC, and the electromagnetic attraction between the two welding wire arcs is small, eliminating the need for Dimensional arc (base value) current, more suitable for CO 2 Gas shielded welding reduces welding costs

Method used

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  • A twin-wire arc welding power supply system and its control method
  • A twin-wire arc welding power supply system and its control method
  • A twin-wire arc welding power supply system and its control method

Examples

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Embodiment 1

[0059] In this embodiment, a twin-wire arc welding power supply system and Figure 5 The system shown is the same except that both the A inverter module and the B inverter module use Figure 1-6 The full-bridge inverter module shown; as Figure 1-2 As shown, the A pulse width modulation circuit module and the B pulse width modulation circuit module both use the 3846 chip as the core of the module, and the A1 pin of the 3846 chip is connected to the Figure 1-6 The C1 pin of the full-bridge inverter shown in is connected, and the A2 pin is connected to the C2 pin; specifically, the A pulse width modulation circuit module uses the A-3846 chip as the core of the module, and the B pulse width modulation circuit module uses the B-3846 chip as the core. The core of the module; the oscillation frequency of the synchronous delay circuit module is 4F, the cycle is T / 4, the frequency after frequency division is 2F, and the cycle is T / 2, and the A pulse width modulation circuit module a...

Embodiment 2

[0069] Same as Example 1, the difference is: as Picture 1-1 As shown, the A pulse width modulation circuit module and the B pulse width modulation circuit module both use the 3525 chip as the core of the module, and the A1 pin of the 3525 chip is connected to the Figure 1-6 The C1 pin of the full-bridge inverter shown in the figure is connected, and the A2 pin is connected to the C2 pin. Figure 8-2 Among them, pin 3 of U3A is connected to pin 3 of A-3525; pin 4 of U3B is connected to pin 3 of B-3525. This embodiment can obtain the same technical effect as that of Embodiment 1.

Embodiment 3

[0071] Same as Embodiment 1, the difference is: A inverter module and B inverter module both adopt the following Figure 1-7 The full-bridge inverter module shown, as Figure 1-3 As shown, the A pulse width modulation circuit module and the B pulse width modulation circuit module both use the 3875 chip as the core of the module, and the A1 pin of the 3876 chip is connected to the Figure 1-7 The shown full bridge inverter module is connected to D1 pin, A2 pin is connected to D2 pin, A3 pin is connected to D3 pin, A4 pin is connected to D4 pin, Figure 8-2 Among them, pin 3 of U3A is connected to pin 17 of A-3875; pin 4 of U3B is connected to pin 17 of B-3875. This embodiment can obtain the same technical effect as that of Embodiment 1.

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Abstract

The invention discloses a double-wire arc welding power supply system and a control method thereof, belongs to the field of control systems of welding machine power supplies, and solves the problems that two power supply systems of a present double-wire arc welding machine are complex in parameter regulation, expensive in price, and cannot be used for CO2 gas shielded arc welding. A power supply system comprises a power supply A and a power supply B. The power supply A comprises a given circuit module A, a pulse width modulation circuit A, and an inverter module A which are connected in order. The power supply B comprises a given circuit module B, a pulse width modulation circuit B, and an inverter module B which are connected in order. A synchronic time-delay circuit module is arranged between the pulse width modulation circuit A and the pulse width modulation circuit B. The double-wire arc welding power supply system and the control method thereof can solve the problems that two power supply systems of a present double-wire arc welding machine are complex in parameter regulation, expensive in price, and cannot be used for CO2 gas shielded arc welding.

Description

technical field [0001] The invention belongs to the field of welding machine power supply control systems, and in particular relates to a twin-wire arc welding power supply system and a control method thereof. Background technique [0002] Commonly used DC arc stalk methods include DC tungsten argon arc welding (TIG stalk) gas metal shielded welding (CO 2 welding and MIG / MAG welding) and DC submerged arc welding. As we all know, although these three welding methods have their own characteristics, their power supply systems and control methods are the same. Its working principle is: the power supply is connected to the three-phase AC input power grid, and the direct current DC is processed by the power frequency rectification and filtering module, and the direct current DC is sent to the inverter, and the alternating current AC is output again after being processed by the pulse width modulation module in the inverter. The period of the pulse width modulation module output p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/10
CPCB23K9/1043
Inventor 石惟一李晓泉邓植生石硕石蓓葛玲兰
Owner 南京东斯达机电科技有限公司