CN2762933Y - Chopped wave type arc welding set driven by internal combustion engine - Google Patents
Chopped wave type arc welding set driven by internal combustion engine Download PDFInfo
- Publication number
- CN2762933Y CN2762933Y CN 200420060262 CN200420060262U CN2762933Y CN 2762933 Y CN2762933 Y CN 2762933Y CN 200420060262 CN200420060262 CN 200420060262 CN 200420060262 U CN200420060262 U CN 200420060262U CN 2762933 Y CN2762933 Y CN 2762933Y
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- internal combustion
- combustion engine
- chopper
- arc
- welding
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Abstract
The utility model relates to a chopped wave type arc welder driven by an internal combustion engine. A powerful insulated gate bipolar transistor module IGBT is used as a chopper switching device for directly converting the output of a low-voltage generator after rectification into a pulse direct current of which the width is in direct proportion to the output power, and the output power of the utility model is regulated by regulating the width of impulses. A capacitor which is larger than 22000 microfarad is added between a rectifier and a chopper for compensating the energy deficit of the utility model in the conversion from the arc starting and idle speed to the welding process.
Description
Affiliated technical field
The utility model relates to a kind of welding equipment, specifically is a kind of internal combustion engine drive chopped mode arc-welding machine.
Background technology
Existing internal combustion engine drive arc-welding machine generally adopts low-voltage alternating-current generator+current rectifying and wave filtering circuit.Adopt the internal combustion engine drive arc-welding machine of this mode to have advantage of simple structure, but its welding current will lean on the exciting current of regulator generator, the dynamic characteristic of welding machine is poor, welding starting the arc instability.During the starting the arc, internal combustion engine can be because of the unexpected increasing rotating speed step-down of load, and welding current is diminished (continue 1-3 second), produces weld defect easily in starting the arc position, and this is to adopt the welding machine of this mode to overcome.
General internal combustion engine drive arc-welding machine output characteristics be to realize by the exciting current of control generator, the requirement that satisfy multiple welding method is difficulty relatively.
The similar electric welding machine of having applied for a patent has:
＜application number〉01258392 permanent magnet generator condenser discharge welder
＜application number〉01252359 band exciter brushless generating, the dual-purpose machine of electric welding
＜application number〉99223968 permanent magnetic DC arc-welding electricity generation two-purpose machines
＜application number〉96240195 permanent magnetic DC arc generators
＜application number〉02,275,805 1 kinds of novel internal combustion direct current arc welding machines
＜application number〉00223112 rectifier type internal combustion direct current arc welding machine
Summary of the invention
The purpose of this invention is to provide a kind of arcing time and significantly shorten, striking current keeps relative stability, and improves the arc-welding machine of welding quality and welding precision.
The objective of the invention is to reach like this: internal combustion engine drive chopped mode arc-welding machine, contain rectifier and chopper, it is characterized in that: make the chopper switches device with the high-power insulated gate bipolar transistor module; Between rectifier and chopper, install big capacitor energy additional.Described its switching frequency of high-power insulated gate bipolar transistor module is 20KHz, and system's adjusting time is 50 μ S, and the described big capacitor energy that installs additional is the electric capacity greater than 22000 microfarads.
In order to increase substantially the dynamic characteristic of welding machine, chopped mode internal combustion engine drive arc-welding machine has used by the chopper switches of high-power IGBT as core, and its frequency is 20KHz, and system regulates times 50 μ S.Be the pulse direct current that width is directly proportional with power output directly, regulate the welding machine power output by the regulating impulse width with the low voltage generator output transform after the rectification; By realized the close loop negative feedback control of welding machine at electric current, the voltage of welding terminal sampling, system accuracy has obtained reliable assurance under electronic control circuit.
In order thoroughly to solve problem such as general machine initial arc electric current instability, this welding machine has adopted the big capacitor energy greater than 22000 microfarads, is used for compensating machine initial arc and the idling energy shortage to the welding process conversion.When machine initial arc, big capacitor energy can provide starting the arc energy needed, and compensation changes because of the welding current that the internal-combustion engine rotational speed step-down causes, by the quick adjustment of chopper, welding current and welding machine setting value is consistent, thereby has guaranteed the stable and welding quality of striking current.
The beneficial effects of the utility model are, adopt chopper after, system regulates the time and shortens to 50 μ S by 1-3S, and welding machine is greatly improved in the starting the arc with by the speed that idling changes welding over to, has guaranteed machine initial arc and welding performance; Adopt big capacitor energy, compensated machine initial arc and the idling energy shortage in the welding process conversion, guaranteed machine initial arc and welding performance.
Description of drawings
Fig. 1 is existing general internal combustion engine drive arc-welding machine theory diagram.
Fig. 2 is an internal combustion engine drive chopper formula arc-welding machine theory diagram.
Fig. 3 is an internal combustion engine drive chopper formula arc-welding machine control circuit schematic diagram.
Fig. 4 is an internal combustion engine drive chopper formula arc-welding machine main circuit schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Referring to Fig. 2 as can be known, make the chopper switches device with high-power IGBT (insulated gate bipolar transistor) module, switching frequency is 20KHz, system regulates times 50 μ S, be the pulse direct current that width is directly proportional with power output directly, regulate the welding machine power output by the regulating impulse width with the low voltage generator output transform after the rectification.Between rectifier and chopper, add capacitor, be used for compensating machine initial arc and idling energy shortage to the welding process conversion greater than 22000 microfarads.
Claims (2)
1, a kind of internal combustion engine drive chopped mode arc-welding machine contains rectifier and chopper, it is characterized in that: make the chopper switches device with the high-power insulated gate bipolar transistor module; Between rectifier and chopper, install big capacitor energy additional.
2, internal combustion engine drive chopped mode arc-welding machine according to claim 1, it is characterized in that: described its switching frequency of high-power insulated gate bipolar transistor module is 20KHz, system's adjusting time is 50 μ S, and the described big capacitor energy that installs additional is the electric capacity greater than 22000 microfarads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060262 CN2762933Y (en) | 2004-07-15 | 2004-07-15 | Chopped wave type arc welding set driven by internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060262 CN2762933Y (en) | 2004-07-15 | 2004-07-15 | Chopped wave type arc welding set driven by internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2762933Y true CN2762933Y (en) | 2006-03-08 |
Family
ID=36140484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420060262 Expired - Lifetime CN2762933Y (en) | 2004-07-15 | 2004-07-15 | Chopped wave type arc welding set driven by internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2762933Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005999A (en) * | 2009-09-02 | 2011-04-06 | 张怀亮 | Energy-saving controller for internal combustion generating set |
| CN102035300A (en) * | 2010-12-29 | 2011-04-27 | 重庆运达科技有限公司 | Multifunctional internal combustion arc welding generator |
| CN104079192A (en) * | 2014-06-04 | 2014-10-01 | 华中科技大学 | Multipath automatic switch high-voltage charger |
| CN109551084A (en) * | 2017-09-25 | 2019-04-02 | Bcs股份公司 | The control method of motro drivien bonding machine and the bonding machine |
-
2004
- 2004-07-15 CN CN 200420060262 patent/CN2762933Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005999A (en) * | 2009-09-02 | 2011-04-06 | 张怀亮 | Energy-saving controller for internal combustion generating set |
| CN102035300A (en) * | 2010-12-29 | 2011-04-27 | 重庆运达科技有限公司 | Multifunctional internal combustion arc welding generator |
| CN104079192A (en) * | 2014-06-04 | 2014-10-01 | 华中科技大学 | Multipath automatic switch high-voltage charger |
| CN109551084A (en) * | 2017-09-25 | 2019-04-02 | Bcs股份公司 | The control method of motro drivien bonding machine and the bonding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140715 Granted publication date: 20060308 |