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IGBT inverter welding machine with no-load voltages and various protection and control functions

A no-load voltage, protection control technology, applied in arc welding equipment, manufacturing tools, welding equipment and other directions, can solve the problems affecting product sales and market competitiveness, product performance, reliability, different production processes, etc., to meet high efficiency and low-cost production, high reliability

Inactive Publication Date: 2017-07-25
朱宣辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different structures and control circuit designs of this type of welding machine will have completely different product performance, reliability, and production processes.
These will affect product sales and market competitiveness

Method used

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  • IGBT inverter welding machine with no-load voltages and various protection and control functions
  • IGBT inverter welding machine with no-load voltages and various protection and control functions
  • IGBT inverter welding machine with no-load voltages and various protection and control functions

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Embodiment Construction

[0026] as attached figure 1 Shown is a schematic structural view of an example manual welding machine made by the present invention. The main components of the welding machine include:

[0027] 1) Shell part. Parts mainly include: handle 2, casing 3 and base plate 38 and other parts.

[0028] 2) The internal part of the welding machine. Including: PCB1 circuit board 8 and its switching tube and radiator IV 6, transformer I 5, capacitor 7 and other devices on the circuit board. After the PCB1 circuit board 8 is processed, it is placed in the plastic protective box 19 and filled with insulating material, which can ensure that the PCB1 circuit board 8 has the protection performance of waterproof, mildew proof, vibration proof, corrosion proof and dust proof. The plastic protective box 19 is fixed on the middle partition 13 below it by four pillars and screws. The input three-phase rectifier bridge (MDS, 75A / 1600V) 10 is installed on its radiator I 11 . The radiator I 11 is ...

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Abstract

The invention relates to an IGBT inverter welding machine with no-load voltages and various protection and control functions. The welding machine is welding equipment of a three-phase power supply source. The IGBT single-transistor full bridge inversion and a corresponding control technology thereof are adopted, and thus IGBT single-transistor inversion manual arc welding or manual welding / argon arc welding operation requirements can be met. Compared with other welding machine products on the market, a welding machine circuit disclosed by the invention has the control functions like no-load voltage control, VRD function, short-circuit protection, open-phase protection, three-way overheating protection, high-tension current suppression and the like; regulation and output of welding currents, arc striking currents and thrust currents, microprocessor digital display and state LED indication can be realized; and the IGBT inverter welding machine has the advantages of being good in performance, low in cost, capable of taking various protection measures, high in reliability and the like.

Description

technical field [0001] The invention relates to an IGBT inverter welding machine with no-load voltage and multiple protection and control functions, belonging to the technical field of inverter welding machines. [0002] technical background [0003] At present, the competition in the inverter welding machine product market is very fierce, which is not only reflected in the competitive advantages of performance and price, but also largely depends on the reliability of the welding machine. The performance and reliability are determined by the control circuit and structural design. [0004] In the domestic and foreign markets, the rated current of IGBT inverter manual arc welding machines is usually at the level of 100-630A (load duration 20-100%). However, different structures and control circuit designs of this type of welding machine will result in completely different product performance, reliability, and production process. These will affect product sales and market comp...

Claims

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Application Information

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IPC IPC(8): B23K9/10
Inventor 孙敏魏继昆朱宣东朱宣辉陈法庆
Owner 朱宣辉
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