CN106001950A - Power control system used for industrial laser cutting device and laser cutting device - Google Patents
Power control system used for industrial laser cutting device and laser cutting device Download PDFInfo
- Publication number
- CN106001950A CN106001950A CN201610580513.3A CN201610580513A CN106001950A CN 106001950 A CN106001950 A CN 106001950A CN 201610580513 A CN201610580513 A CN 201610580513A CN 106001950 A CN106001950 A CN 106001950A
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- China
- Prior art keywords
- control module
- power control
- laser
- cutting device
- laser cutting
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/707—Auxiliary equipment for monitoring laser beam transmission optics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to the field of control over laser cutting devices, in particular to a power control system used for an industrial laser cutting device and the laser cutting device. The power control system used for the laser cutting device is used for dividing a control circuit into an internal control module and an external control module; and meanwhile a high-speed optocoupler is used for physically isolating the internal control module and the external control module. Thus, a laser switching-on and switching-off signal and a first laser power control signal which are sent by a controller are transmitted to the external control module through the optocoupler, further processed through the external control module and then sent to a controlled laser device; and external interference, caused by instantaneous high voltage of the laser device, on the internal control module can be effectively avoided, and internal control module elements higher in price can also be prevented from being subjected to instantaneous high-voltage damage.
Description
Technical field
The present invention relates to laser cutting device control field, especially for power control system and the laser cutting device of industrial lasers cutter sweep.
Background technology
Cut refers to that the laser launched by laser instrument is focused into the laser beam of high power density through light path system, and be irradiated to surface of the work and make workpiece reach fusing point or boiling point, along with light beam finally makes material form joint-cutting with workpiece relative to moving of position, thus reach to cut the cutting mode of purpose；Compared with tradition cutting mode, the mode of cut uses light beam to instead of traditional mechanical blades, there is precision high, cutting is fast, pattern the most slit limit, can Automatic Typesetting, save material, otch smooth, the series of advantages features such as processing cost is low, thus increasingly it is widely applied to industry cutting field；
CO2 laser instrument is one of common gas laser, generally by the power of laser power regulation the launched laser of CO2 laser instrument of regulation CO2 laser tube, laser power is the biggest, and the launched laser of CO2 laser instrument is the strongest, otherwise, laser power is the least, and the launched laser of CO2 laser instrument is the most weak.Fig. 1 gives the control principle drawing of typical CO2 laser instrument, and wherein, switch optical signal controls whether laser excites；Analog signals (0 ~ 5V) controls Laser output watt level, the most same I/O signal (switch optical signal) of crossing of CO2 laser power control the most on the market controls the switch of laser, then carries out digital-to-analogue conversion generation analog signals by special DA chip and controls the luminous power of CO2 laser tube.But, owing to CO2 laser tube to be made is luminous, needing the high pressure (usual about 30,000 volts) applying a short time to it, after lasing fluorescence triggers, this voltage reduces the most rapidly；This characteristic due to CO2 laser instrument, extremely easily the front-end controlling circuit being attached thereto is caused damage or interference, particularly CO2 laser instrument not safety the most correct when connecing geodesic, its front-end controlling circuit experienced interference is especially prominent, there is also the phenomenon of air direct breakdown sparking time serious.This interference also can be directly concatenated on front-end controlling circuit by holding wire or underground, now the components and parts of control circuit can be caused high-voltage breakdown；Thus have a strong impact on stability and the reliability of whole control circuit.
Summary of the invention
The goal of the invention of the present invention is: in existing laser cutting system; high pressure owing to producing during laser instrument luminescence easily produces electromagnetic interference and the problem easily causing power control system high pressure, overcurrent damage to its power control system, it is provided that a kind of capacity of resisting disturbance is strong, have the laser cutting device power control system of defencive function.
To achieve these goals, the technical solution used in the present invention is:
The power control system of a kind of laser cutting device, including internal control module and external control module, described external control module is directly connected with controlled laser device, described internal control module and external control module ground connection respectively；
Described internal control module includes controller, and described controller is for sending switch optical signal and the first optical power control signal to laser instrument；
Described external control module includes Schmidt trigger and the DA change-over circuit being sequentially connected with；Described Schmidt trigger for carrying out anti-phase second optical power control signal that is shaped as by described first optical power control signal, and described DA change-over circuit sends to laser instrument after described second optical power control signal is carried out digital-to-analogue conversion；
Light-coupled isolation is passed through between described internal control module and external control module.
Preferably, described optocoupler is high speed photo coupling.
Preferably, described controller circuitry is FPGA circuitry.
Preferably, described Schmidt trigger is chip SN74HC14.
Present invention simultaneously provides a kind of laser cutting device, described laser cutting device comprises power control system as above.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: control circuit is itself divided into internal control module and external control module by the power control system of the laser cutting device that the present invention provides, use high speed photo coupling internal control module and external control module to be physically separated simultaneously, so, switch optical signal and the first optical power control signal that controller sends all are transferred to external control module by optocoupler, further send to controlled laser device after external control module processes, thus can be prevented effectively from the external disturbance that internal control module is brought by laser instrument instantaneous high pressure, also the internal control module components and parts avoiding price more expensive are destroyed by instantaneous high pressure.
Accompanying drawing explanation
Fig. 1 is typical laser power control system theory diagram in prior art.
Fig. 2 is the laser power control system theory diagram that the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1:As shown in Figure 2, the present embodiment provides the power control system of a kind of laser cutting device, including internal control module 1 and external control module 2, described external control module 2 is directly connected with controlled CO2 laser instrument, described internal control module 1 and external control module 2 ground connection respectively；
Described internal control module 1 includes controller, and in the present embodiment, described controller circuitry is FPGA circuitry 11.Described FPGA circuitry 11 is for sending switch optical signal and the first optical power control signal to CO2 laser instrument；
Described external control module 2 includes the Schmidt trigger 22 and DA change-over circuit 23 being sequentially connected with；In the present embodiment, described Schmidt trigger 22 is chip SN74HC14, it for carrying out anti-phase second optical power control signal that is shaped as by described first optical power control signal, and described DA change-over circuit 23 becomes the analog quantity of 0-5V after described second optical power control signal is carried out digital-to-analogue conversion and sends to controlled CO2 laser instrument；
Isolated by high speed photo coupling 3 between described internal control module 1 and external control module 2, so, switch optical signal and the first optical power control signal that FPGA circuitry 11 sends all are transferred to external control module by this high speed photo coupling 3, further send to controlled CO2 laser instrument after external control module 2 processes, thus can be prevented effectively from the external disturbance that internal control module 1 is brought by CO2 laser instrument instantaneous high pressure.
Embodiment 2:The present embodiment provides a kind of laser cutting device, and described laser cutting device comprises power control system as described in Example 1.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (5)
1. the power control system of a laser cutting device, it is characterised in that include internal control module and external control module, described external control module is directly connected with controlled laser device, described internal control module and external control module ground connection respectively；
Described internal control module includes controller, and described controller is for sending switch optical signal and the first optical power control signal to laser instrument；
Described external control module includes Schmidt trigger and the DA change-over circuit being sequentially connected with；Described Schmidt trigger for carrying out anti-phase second optical power control signal that is shaped as by described first optical power control signal, and described DA change-over circuit sends to laser instrument after described second optical power control signal is carried out digital-to-analogue conversion；
Light-coupled isolation is passed through between described internal control module and external control module.
Power control system the most according to claim 1, it is characterised in that described optocoupler is high speed photo coupling.
Power control system the most according to claim 2, it is characterised in that described controller circuitry is FPGA circuitry.
Power control system the most according to claim 1, it is characterised in that described Schmidt trigger is chip SN74HC14.
5. a laser cutting device, it is characterised in that described laser cutting device comprises the power control system as described in any one of Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580513.3A CN106001950B (en) | 2016-07-21 | 2016-07-21 | For the power control system and laser cutting device of industrial lasers cutter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580513.3A CN106001950B (en) | 2016-07-21 | 2016-07-21 | For the power control system and laser cutting device of industrial lasers cutter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106001950A true CN106001950A (en) | 2016-10-12 |
| CN106001950B CN106001950B (en) | 2018-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610580513.3A Active CN106001950B (en) | 2016-07-21 | 2016-07-21 | For the power control system and laser cutting device of industrial lasers cutter device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106001950B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103138A (en) * | 1986-04-30 | 1987-11-11 | 西北电讯工程学院 | Sealed tea carbon bioxide laser device using coaxial inner-circulation |
| CN86103133A (en) * | 1986-04-30 | 1987-11-11 | 西北电讯工程学院 | Combinational TEA carbon bioxide laser device |
| CN203853677U (en) * | 2014-03-21 | 2014-10-01 | 中国人民解放军总装备部军械技术研究所 | Portable all-direction laser rust removing instrument |
| CN104638500A (en) * | 2013-11-13 | 2015-05-20 | 中国科学院沈阳计算技术研究所有限公司 | High-voltage receiving control device for high-power CO2 (carbon dioxide) lasers |
| WO2015089871A1 (en) * | 2013-12-20 | 2015-06-25 | 武汉光迅科技股份有限公司 | Wavelength tunable external-cavity laser |
| CN205869731U (en) * | 2016-07-21 | 2017-01-11 | 成都福誉科技有限公司 | Power control circuit and laser cutting device of laser cutting device |
-
2016
- 2016-07-21 CN CN201610580513.3A patent/CN106001950B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103138A (en) * | 1986-04-30 | 1987-11-11 | 西北电讯工程学院 | Sealed tea carbon bioxide laser device using coaxial inner-circulation |
| CN86103133A (en) * | 1986-04-30 | 1987-11-11 | 西北电讯工程学院 | Combinational TEA carbon bioxide laser device |
| CN104638500A (en) * | 2013-11-13 | 2015-05-20 | 中国科学院沈阳计算技术研究所有限公司 | High-voltage receiving control device for high-power CO2 (carbon dioxide) lasers |
| WO2015089871A1 (en) * | 2013-12-20 | 2015-06-25 | 武汉光迅科技股份有限公司 | Wavelength tunable external-cavity laser |
| CN203853677U (en) * | 2014-03-21 | 2014-10-01 | 中国人民解放军总装备部军械技术研究所 | Portable all-direction laser rust removing instrument |
| CN205869731U (en) * | 2016-07-21 | 2017-01-11 | 成都福誉科技有限公司 | Power control circuit and laser cutting device of laser cutting device |
Non-Patent Citations (1)
| Title |
|---|
| 廖斐: "《大功率射频激光电源功率控制技术研究》", 《华中科技大学硕士论文》 * |
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| CN106001950B (en) | 2018-06-19 |
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