WO2018079153A1 - Laser machining device - Google Patents
Laser machining device Download PDFInfo
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- WO2018079153A1 WO2018079153A1 PCT/JP2017/034460 JP2017034460W WO2018079153A1 WO 2018079153 A1 WO2018079153 A1 WO 2018079153A1 JP 2017034460 W JP2017034460 W JP 2017034460W WO 2018079153 A1 WO2018079153 A1 WO 2018079153A1
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- power supply
- voltage
- laser processing
- circuit
- processing apparatus
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
Definitions
- the present invention relates to a laser processing apparatus.
- the laser processing apparatus prints or draws on a processing target portion by irradiating the processing target with laser light emitted from a laser light source.
- a control part and a laser processing part operate
- the power supply device is provided with a surge suppression circuit or noise filter for removing noise contained in the commercial power supply in the previous stage of the power supply circuit. This prevents noise from entering the power supply voltage supplied from the power supply circuit to the internal circuit.
- Patent Document 1 discloses a lightning protection device configured to protect an electronic device from a high voltage caused by a lightning strike by supplying power from the power line to the electronic device via an insulation transformer and a line filter. .
- the surge suppression substrate does not have high withstand voltage characteristics.
- the number of surge inputs to the surge suppression board may exceed a preset limit value. In this case, the characteristics of the surge suppression substrate deteriorate, and the surge suppression substrate cannot sufficiently suppress the surge voltage.
- the noise filter does not have a high withstand voltage characteristic, and if a surge voltage or an overvoltage is repeatedly applied to the noise filter, electric leakage is likely to occur in the noise filter.
- the lightning strike protection device disclosed in Patent Document 1 attenuates surge noise with an insulating transformer and a line filter. However, when the characteristics of the line filter deteriorate due to the repeatedly applied surge voltage, the lightning strike protection device cannot sufficiently suppress the surge voltage included in the power supply supplied to the electronic device.
- the present invention has been made in view of such circumstances, and an object thereof is to provide a laser processing apparatus capable of preventing malfunction caused by a surge voltage included in a commercial power supply.
- One aspect of the present invention is a laser processing apparatus, in which a commercial power supply is supplied via a breaker, a noise suppression apparatus for suppressing noise included in the commercial power supply, and a commercial power supply supplied from the noise suppression apparatus
- a power supply circuit that generates a DC power supply voltage and supplies it to an internal circuit, and a step-down insulating transformer that is interposed between any one of the breaker and the power supply circuit and steps down the voltage of the commercial power supply.
- the step-down insulating transformer is preferably interposed between the breaker and the noise suppression device.
- the noise suppression device preferably includes a surge suppression circuit and a noise filter.
- the step-down insulation transformer includes a primary side coil that receives the output voltage supplied from the breaker, and a secondary side coil that supplies the step-down voltage to the surge suppression circuit. preferable.
- the step-down voltage output from the secondary coil of the step-down isolation transformer is supplied to the surge suppression circuit, and the output voltage of the surge suppression circuit in which the surge voltage is suppressed is input to the noise filter.
- the step-down insulating transformer is interposed between the noise suppression device and the power supply circuit.
- the output voltage of the noise suppression device is stepped down by the step-down insulation transformer and supplied to the power supply circuit.
- the block diagram which shows the power supply apparatus of a laser processing apparatus.
- (A) (b) is an output waveform diagram which shows operation
- a commercial power supply 1 of around 100 V or around 200 V is supplied to a primary coil of a step-down isolation transformer 5 via a power terminal 2, a key switch 3 and a breaker 4.
- the power terminal 2 is a terminal block to which commercial power is supplied.
- the key switch 3 is a switch for opening and closing power supply to a unit that consumes a large amount of power, such as a laser light source, and other units.
- the breaker 4 operates to cut off the short-circuit current when a short-circuit failure occurs between the power terminal 2 and the step-down insulation transformer 5.
- the breaker 4 further operates to perform a return operation when an abnormality is avoided after the short-circuit current is interrupted.
- the step-down insulation transformer 5 steps down the voltage of the commercial power source supplied to the primary side coil to a voltage of about 1 / 2.2 and outputs it from the secondary side coil. Even if an AC voltage of about 200 V is supplied as the commercial power source 1 with a step-down ratio of 1 / 2.2, an AC voltage of almost 100 V is output from the secondary side coil of the step-down insulating transformer 5, so that the power circuit 8 As a general-purpose product of 100V specification can be used.
- the step-down isolation transformer 5 attenuates noise included in the input voltage simultaneously with step-down of the input voltage.
- the output voltage of the step-down isolation transformer 5 is supplied to the surge suppression circuit 6.
- the surge suppression circuit 6 clamps the high-frequency / harmonic component noise peak value included in the AC output voltage of the step-down insulating transformer 5 to a predetermined voltage and outputs the clamped voltage to the noise filter 7.
- the noise filter 7 suppresses normal common noise from the voltage clamped by the surge suppression circuit 6 and stabilizes the input voltage of the power supply circuit 8.
- the power supply circuit 8 smoothes the AC output voltage of the noise filter 7 and supplies it to the internal circuit 9 as a DC power supply voltage.
- the commercial power source 1 is supplied to the step-down insulating transformer 5 through the power terminal 2, the key switch 3 and the breaker 4.
- the input voltage V1 supplied to the primary coil of the step-down isolation transformer 5 may include a surge voltage sv1 that reaches several times the peak value p of the normal input voltage. .
- the step-down insulating transformer 5 outputs an output voltage V2 obtained by stepping down the input voltage V1.
- the surge voltage sv2 included in the output voltage V2 is a voltage obtained by stepping down the peak value of the surge voltage sv1 to approximately 1 ⁇ 2.
- the output voltage V2 including the stepped down surge voltage sv2 is supplied to the surge suppression circuit 6, and the surge suppression circuit 6 and the noise filter 7 further attenuate the surge voltage sv2.
- the noise filter 7 outputs an output voltage V3 including the attenuated surge voltage sv2 to the power supply circuit 8.
- the DC power supply voltage V4 supplied from the power supply circuit 8 to the internal circuit 9 becomes a stable DC voltage from which noise is substantially removed.
- step-down insulating transformer 5 having a step-down ratio of 1 / 2.2 is interposed between the breaker 4 and the surge suppression circuit 6, even if an AC voltage of about 200 V is supplied to the commercial power source 1, Since an AC voltage of approximately 100 V is output from the secondary coil of the step-down insulating transformer 5, a general-purpose product of 100 V specification can be used as the power supply circuit 8. Therefore, the cost of the power supply circuit 8 can be reduced.
- the surge voltage is suppressed by stepping down the input voltage from the commercial power source 1 and the surge voltage or overvoltage included in the input voltage.
- the circuit 6 can be supplied. Therefore, since the surge voltage supplied to the surge suppression circuit 6 can be suppressed, deterioration of the surge suppression circuit 6 due to the surge voltage can be suppressed.
- the surge suppression circuit 6 can clamp the peak value of high-frequency / harmonic component noise contained in the AC output voltage to a predetermined voltage, the withstand voltage characteristics of the noise filter 7 and the power supply circuit 8 are set low. can do.
- the noise filter 7 can stabilize normal input noise from the voltage clamped by the surge suppression circuit 6 and stabilize the input voltage of the power supply circuit 8. Therefore, since the output voltage of the power supply circuit 8 can be stabilized, the operation of the internal circuit 9 can be stabilized.
- this laser processing apparatus can be installed in an environment where the commercial power supply 1 with a lot of noise is supplied.
- the step-down insulating transformer 5 may be disposed between the noise filter 7 and the power supply circuit 8.
- the subject matter of the invention may reside in fewer features than all the features of the specific embodiments and variations described above. The scope of the invention should be determined along with the full scope of the claims and equivalents.
Abstract
Provided is a laser machining device comprising: noise suppression devices (6, 7) to which a commercial power supply is fed via a breaker (4), and which suppress noise included in the commercial power supply; a power supply circuit (8) which generates a power supply voltage on the basis of the commercial power supply fed from the noise suppression devices (6, 7), and which feeds the power supply voltage to an internal circuit (9); and a step-down insulation transformer (5) which is interposed at a position between the breaker (4) and the power supply circuit (8), and which steps down the voltage of the commercial power supply.
Description
本発明は、レーザ加工装置に関するものである。
The present invention relates to a laser processing apparatus.
レーザ加工装置は、レーザ光源から出射されるレーザ光を加工対象物に照射することで加工対象部に印字あるいは描画する。通常、１００Ｖ前後あるいは２００Ｖ前後の商用電源の供給に基づいて、制御部及びレーザ加工部が動作する。
The laser processing apparatus prints or draws on a processing target portion by irradiating the processing target with laser light emitted from a laser light source. Usually, a control part and a laser processing part operate | move based on supply of commercial power supply around 100V or around 200V.
商用電源は、電源供給装置を介して制御部及びレーザ加工部に供給される。電源供給装置には、商用電源に含まれるノイズを除去するためのサージ抑制回路あるいはノイズフィルタが電源回路の前段に備えられている。これにより、電源回路から内部回路に供給される電源電圧へのノイズの侵入を防止している。
Commercial power is supplied to the control unit and the laser processing unit via a power supply device. The power supply device is provided with a surge suppression circuit or noise filter for removing noise contained in the commercial power supply in the previous stage of the power supply circuit. This prevents noise from entering the power supply voltage supplied from the power supply circuit to the internal circuit.
特許文献１には、電源線から絶縁トランス及びラインフィルタを介して電子機器に電源を供給することにより、落雷による高電圧から電子機器を保護するように構成された落雷保護装置が開示されている。
Patent Document 1 discloses a lightning protection device configured to protect an electronic device from a high voltage caused by a lightning strike by supplying power from the power line to the electronic device via an insulation transformer and a line filter. .
上記のようなレーザ加工装置の電源供給装置では、サージ抑制基板は、高い耐電圧特性を有していない。このようなサージ抑制基板に商用電源の電源線からサージ電圧が繰り返し印加されると、サージ抑制基板へのサージ入力回数があらかじめ設定されている制限値を超える可能性がある。この場合、サージ抑制基板の特性が劣化して、サージ抑制基板はサージ電圧を十分に抑制できなくなる。
In the power supply device of the laser processing apparatus as described above, the surge suppression substrate does not have high withstand voltage characteristics. When a surge voltage is repeatedly applied to such a surge suppression board from the power line of the commercial power supply, the number of surge inputs to the surge suppression board may exceed a preset limit value. In this case, the characteristics of the surge suppression substrate deteriorate, and the surge suppression substrate cannot sufficiently suppress the surge voltage.
また、ノイズフィルタも耐電圧特性が高くなく、ノイズフィルタにサージ電圧あるいは過電圧が繰り返し印加されると、ノイズフィルタにおいて漏電が発生しやすくなる。
特許文献１に開示された落雷保護装置は、絶縁トランスとラインフィルタとでサージノイズを減衰させている。しかし、繰り返し印加されるサージ電圧によりラインフィルタの特性が劣化すると、この落雷保護装置は、電子機器に供給される電源に含まれるサージ電圧を十分に抑制することができない。 Also, the noise filter does not have a high withstand voltage characteristic, and if a surge voltage or an overvoltage is repeatedly applied to the noise filter, electric leakage is likely to occur in the noise filter.
The lightning strike protection device disclosed in Patent Document 1 attenuates surge noise with an insulating transformer and a line filter. However, when the characteristics of the line filter deteriorate due to the repeatedly applied surge voltage, the lightning strike protection device cannot sufficiently suppress the surge voltage included in the power supply supplied to the electronic device.
特許文献１に開示された落雷保護装置は、絶縁トランスとラインフィルタとでサージノイズを減衰させている。しかし、繰り返し印加されるサージ電圧によりラインフィルタの特性が劣化すると、この落雷保護装置は、電子機器に供給される電源に含まれるサージ電圧を十分に抑制することができない。 Also, the noise filter does not have a high withstand voltage characteristic, and if a surge voltage or an overvoltage is repeatedly applied to the noise filter, electric leakage is likely to occur in the noise filter.
The lightning strike protection device disclosed in Patent Document 1 attenuates surge noise with an insulating transformer and a line filter. However, when the characteristics of the line filter deteriorate due to the repeatedly applied surge voltage, the lightning strike protection device cannot sufficiently suppress the surge voltage included in the power supply supplied to the electronic device.
この発明はこのような事情に鑑みてなされたものであり、その目的は商用電源に含まれるサージ電圧に起因する動作不良を未然に防止し得るレーザ加工装置を提供することにある。
The present invention has been made in view of such circumstances, and an object thereof is to provide a laser processing apparatus capable of preventing malfunction caused by a surge voltage included in a commercial power supply.
本発明の一側面は、レーザ加工装置であって、商用電源がブレーカを介して供給されて、商用電源に含まれるノイズを抑制するノイズ抑制装置と、前記ノイズ抑制装置から供給される商用電源に基づいて、直流電源電圧を生成して内部回路に供給する電源回路と、前記ブレーカと前記電源回路との間のいずれかに介在され、前記商用電源の電圧を降圧する降圧絶縁トランスと、を備える。
One aspect of the present invention is a laser processing apparatus, in which a commercial power supply is supplied via a breaker, a noise suppression apparatus for suppressing noise included in the commercial power supply, and a commercial power supply supplied from the noise suppression apparatus A power supply circuit that generates a DC power supply voltage and supplies it to an internal circuit, and a step-down insulating transformer that is interposed between any one of the breaker and the power supply circuit and steps down the voltage of the commercial power supply. .
この構成により、降圧絶縁トランスにより、電源回路に供給される商用電源に含まれるサージ電圧のピーク値が抑制される。
また、上記のレーザ加工装置では、前記降圧絶縁トランスは、前記ブレーカと前記ノイズ抑制装置との間に介在されることが好ましい。 With this configuration, the peak value of the surge voltage included in the commercial power supply supplied to the power supply circuit is suppressed by the step-down insulating transformer.
In the laser processing apparatus, the step-down insulating transformer is preferably interposed between the breaker and the noise suppression device.
また、上記のレーザ加工装置では、前記降圧絶縁トランスは、前記ブレーカと前記ノイズ抑制装置との間に介在されることが好ましい。 With this configuration, the peak value of the surge voltage included in the commercial power supply supplied to the power supply circuit is suppressed by the step-down insulating transformer.
In the laser processing apparatus, the step-down insulating transformer is preferably interposed between the breaker and the noise suppression device.
この構成により、ノイズ抑制装置に供給される商用電源に含まれるサージ電圧が抑制される。
また、上記のレーザ加工装置では、前記ノイズ抑制装置は、サージ抑制回路とノイズフィルタとを含むことが好ましい。 With this configuration, the surge voltage included in the commercial power supply supplied to the noise suppression device is suppressed.
In the laser processing apparatus, the noise suppression device preferably includes a surge suppression circuit and a noise filter.
また、上記のレーザ加工装置では、前記ノイズ抑制装置は、サージ抑制回路とノイズフィルタとを含むことが好ましい。 With this configuration, the surge voltage included in the commercial power supply supplied to the noise suppression device is suppressed.
In the laser processing apparatus, the noise suppression device preferably includes a surge suppression circuit and a noise filter.
この構成により、降圧絶縁トランスの出力電圧から、サージ抑制回路及びノイズフィルタによりサージ電圧及びノイズが吸収される。
また、上記のレーザ加工装置では、前記降圧絶縁トランスは、前記ブレーカから供給された出力電圧を受け取る一次側コイルと、降圧電圧を前記サージ抑制回路に供給する二次側コイルと、を含むことが好ましい。 With this configuration, the surge voltage and noise are absorbed from the output voltage of the step-down isolation transformer by the surge suppression circuit and the noise filter.
In the above laser processing apparatus, the step-down insulation transformer includes a primary side coil that receives the output voltage supplied from the breaker, and a secondary side coil that supplies the step-down voltage to the surge suppression circuit. preferable.
また、上記のレーザ加工装置では、前記降圧絶縁トランスは、前記ブレーカから供給された出力電圧を受け取る一次側コイルと、降圧電圧を前記サージ抑制回路に供給する二次側コイルと、を含むことが好ましい。 With this configuration, the surge voltage and noise are absorbed from the output voltage of the step-down isolation transformer by the surge suppression circuit and the noise filter.
In the above laser processing apparatus, the step-down insulation transformer includes a primary side coil that receives the output voltage supplied from the breaker, and a secondary side coil that supplies the step-down voltage to the surge suppression circuit. preferable.
この構成により、降圧絶縁トランスの二次側コイルから出力される降圧電圧がサージ抑制回路に供給されて、サージ電圧が抑制されたサージ抑制回路の出力電圧がノイズフィルタに入力される。
With this configuration, the step-down voltage output from the secondary coil of the step-down isolation transformer is supplied to the surge suppression circuit, and the output voltage of the surge suppression circuit in which the surge voltage is suppressed is input to the noise filter.
また、上記のレーザ加工装置では、前記降圧絶縁トランスは、前記ノイズ抑制装置と前記電源回路との間に介在されることが好ましい。
この構成により、ノイズ抑制装置の出力電圧が降圧絶縁トランスで降圧されて、電源回路に供給される。 In the above laser processing apparatus, it is preferable that the step-down insulating transformer is interposed between the noise suppression device and the power supply circuit.
With this configuration, the output voltage of the noise suppression device is stepped down by the step-down insulation transformer and supplied to the power supply circuit.
この構成により、ノイズ抑制装置の出力電圧が降圧絶縁トランスで降圧されて、電源回路に供給される。 In the above laser processing apparatus, it is preferable that the step-down insulating transformer is interposed between the noise suppression device and the power supply circuit.
With this configuration, the output voltage of the noise suppression device is stepped down by the step-down insulation transformer and supplied to the power supply circuit.
本発明のレーザ加工装置によれば、商用電源に含まれるサージ電圧に起因する動作不良を未然に防止することができる。本発明の他の形態及び利点は本発明の技術的思想の例を示している図面と共に以下の記載から明らかとなる。
According to the laser processing apparatus of the present invention, it is possible to prevent a malfunction caused by a surge voltage included in a commercial power source. Other aspects and advantages of the present invention will become apparent from the following description taken in conjunction with the drawings, which illustrate examples of the technical spirit of the present invention.
以下、レーザ加工装置の電源供給装置の一実施形態を図面に従って説明する。図１に示すように、１００Ｖ前後あるいは２００Ｖ前後の商用電源１は、パワーターミナル２、キースイッチ３及びブレーカ４を介して降圧絶縁トランス５の一次側コイルに供給される。
Hereinafter, an embodiment of a power supply device for a laser processing apparatus will be described with reference to the drawings. As shown in FIG. 1, a commercial power supply 1 of around 100 V or around 200 V is supplied to a primary coil of a step-down isolation transformer 5 via a power terminal 2, a key switch 3 and a breaker 4.
パワーターミナル２は、商用電源が供給される端子台である。キースイッチ３は、レーザ光源等、大電力を消費するユニット及びその他のユニットへの電力供給を開閉するためのスイッチである。
The power terminal 2 is a terminal block to which commercial power is supplied. The key switch 3 is a switch for opening and closing power supply to a unit that consumes a large amount of power, such as a laser light source, and other units.
ブレーカ４は、パワーターミナル２から降圧絶縁トランス５までの間で短絡故障が発生した場合に、短絡電流を遮断するように動作する。また、ブレーカ４は、短絡電流の遮断後に、異常が回避された場合には、復帰操作するようにさらに動作する。
The breaker 4 operates to cut off the short-circuit current when a short-circuit failure occurs between the power terminal 2 and the step-down insulation transformer 5. The breaker 4 further operates to perform a return operation when an abnormality is avoided after the short-circuit current is interrupted.
降圧絶縁トランス５は、一次側コイルに供給された商用電源の電圧をほぼ１／２．２の電圧に降圧して二次側コイルから出力する。１／２．２の降圧比により、商用電源１として、約２００Ｖの交流電圧が供給されても、降圧絶縁トランス５の二次側コイルからほぼ１００Ｖの交流電圧が出力されるため、電源回路８として１００Ｖ仕様の汎用品が使用可能となっている。
The step-down insulation transformer 5 steps down the voltage of the commercial power source supplied to the primary side coil to a voltage of about 1 / 2.2 and outputs it from the secondary side coil. Even if an AC voltage of about 200 V is supplied as the commercial power source 1 with a step-down ratio of 1 / 2.2, an AC voltage of almost 100 V is output from the secondary side coil of the step-down insulating transformer 5, so that the power circuit 8 As a general-purpose product of 100V specification can be used.
降圧絶縁トランス５は、入力電圧の降圧と同時に、入力電圧に含まれるノイズを減衰させる。
降圧絶縁トランス５の出力電圧は、サージ抑制回路６に供給される。サージ抑制回路６は、降圧絶縁トランス５の交流出力電圧に含まれる高周波・高調波成分のノイズのピーク値を所定電圧にクランプして、ノイズフィルタ７に出力する。 The step-down isolation transformer 5 attenuates noise included in the input voltage simultaneously with step-down of the input voltage.
The output voltage of the step-down isolation transformer 5 is supplied to the surge suppression circuit 6. The surge suppression circuit 6 clamps the high-frequency / harmonic component noise peak value included in the AC output voltage of the step-down insulating transformer 5 to a predetermined voltage and outputs the clamped voltage to the noise filter 7.
降圧絶縁トランス５の出力電圧は、サージ抑制回路６に供給される。サージ抑制回路６は、降圧絶縁トランス５の交流出力電圧に含まれる高周波・高調波成分のノイズのピーク値を所定電圧にクランプして、ノイズフィルタ７に出力する。 The step-down isolation transformer 5 attenuates noise included in the input voltage simultaneously with step-down of the input voltage.
The output voltage of the step-down isolation transformer 5 is supplied to the surge suppression circuit 6. The surge suppression circuit 6 clamps the high-frequency / harmonic component noise peak value included in the AC output voltage of the step-down insulating transformer 5 to a predetermined voltage and outputs the clamped voltage to the noise filter 7.
ノイズフィルタ７は、サージ抑制回路６でクランプされた電圧からノーマルコモンノイズを抑制して、電源回路８の入力電圧を安定化させる。電源回路８は、ノイズフィルタ７の交流出力電圧を平滑して、直流電源電圧として内部回路９に供給する。
The noise filter 7 suppresses normal common noise from the voltage clamped by the surge suppression circuit 6 and stabilizes the input voltage of the power supply circuit 8. The power supply circuit 8 smoothes the AC output voltage of the noise filter 7 and supplies it to the internal circuit 9 as a DC power supply voltage.
次に、上記のように構成された電源供給装置の作用を説明する。
商用電源１は、パワーターミナル２、キースイッチ３及びブレーカ４を介して降圧絶縁トランス５に供給される。 Next, the operation of the power supply device configured as described above will be described.
The commercial power source 1 is supplied to the step-down insulating transformer 5 through the power terminal 2, the key switch 3 and the breaker 4.
商用電源１は、パワーターミナル２、キースイッチ３及びブレーカ４を介して降圧絶縁トランス５に供給される。 Next, the operation of the power supply device configured as described above will be described.
The commercial power source 1 is supplied to the step-down insulating transformer 5 through the power terminal 2, the key switch 3 and the breaker 4.
図２（ａ）に示すように、降圧絶縁トランス５の一次側コイルに供給される入力電圧Ｖ１には、通常の入力電圧のピーク値ｐの数倍に達するサージ電圧ｓｖ１が含まれることがある。
As shown in FIG. 2A, the input voltage V1 supplied to the primary coil of the step-down isolation transformer 5 may include a surge voltage sv1 that reaches several times the peak value p of the normal input voltage. .
降圧絶縁トランス５は、入力電圧Ｖ１の降圧した出力電圧Ｖ２を出力する。この時、出力電圧Ｖ２に含まれるサージ電圧ｓｖ２は、サージ電圧ｓｖ１のピーク値もほぼ１／２に降圧した電圧となる。
The step-down insulating transformer 5 outputs an output voltage V2 obtained by stepping down the input voltage V1. At this time, the surge voltage sv2 included in the output voltage V2 is a voltage obtained by stepping down the peak value of the surge voltage sv1 to approximately ½.
サージ抑制回路６には、降圧されたサージ電圧ｓｖ２を含む出力電圧Ｖ２が供給され、サージ抑制回路６およびノイズフィルタ７は、サージ電圧ｓｖ２をさらに減衰させる。ノイズフィルタ７は、その減衰されたサージ電圧ｓｖ２を含む出力電圧Ｖ３を電源回路８に出力する。
The output voltage V2 including the stepped down surge voltage sv2 is supplied to the surge suppression circuit 6, and the surge suppression circuit 6 and the noise filter 7 further attenuate the surge voltage sv2. The noise filter 7 outputs an output voltage V3 including the attenuated surge voltage sv2 to the power supply circuit 8.
すると、図２（ｂ）に示すように、電源回路８から内部回路９に供給される直流電源電圧Ｖ４は、ノイズがほぼ除去された安定した直流電圧となる。
上記のようなレーザ加工装置の電源供給装置では、次に示す効果を得ることができる。 Then, as shown in FIG. 2B, the DC power supply voltage V4 supplied from the power supply circuit 8 to the internal circuit 9 becomes a stable DC voltage from which noise is substantially removed.
In the power supply device of the laser processing apparatus as described above, the following effects can be obtained.
上記のようなレーザ加工装置の電源供給装置では、次に示す効果を得ることができる。 Then, as shown in FIG. 2B, the DC power supply voltage V4 supplied from the power supply circuit 8 to the internal circuit 9 becomes a stable DC voltage from which noise is substantially removed.
In the power supply device of the laser processing apparatus as described above, the following effects can be obtained.
（１）１／２．２の降圧比を備えた降圧絶縁トランス５をブレーカ４とサージ抑制回路６との間に介在させたので、商用電源１に約２００Ｖの交流電圧が供給されても、降圧絶縁トランス５の二次側コイルからほぼ１００Ｖの交流電圧が出力されるため、電源回路８として１００Ｖ仕様の汎用品を使用することができる。従って、電源回路８のコストを低減することができる。
(1) Since the step-down insulating transformer 5 having a step-down ratio of 1 / 2.2 is interposed between the breaker 4 and the surge suppression circuit 6, even if an AC voltage of about 200 V is supplied to the commercial power source 1, Since an AC voltage of approximately 100 V is output from the secondary coil of the step-down insulating transformer 5, a general-purpose product of 100 V specification can be used as the power supply circuit 8. Therefore, the cost of the power supply circuit 8 can be reduced.
（２）ブレーカ４とサージ抑制回路６との間に降圧絶縁トランス５を介在させたことにより、商用電源１からの入力電圧及びその入力電圧に含まれるサージ電圧、あるいは過電圧を降圧してサージ抑制回路６に供給することができる。従って、サージ抑制回路６に供給されるサージ電圧を抑制することができるので、サージ電圧によるサージ抑制回路６の劣化を抑制することができる。
(2) By interposing the step-down isolation transformer 5 between the breaker 4 and the surge suppression circuit 6, the surge voltage is suppressed by stepping down the input voltage from the commercial power source 1 and the surge voltage or overvoltage included in the input voltage. The circuit 6 can be supplied. Therefore, since the surge voltage supplied to the surge suppression circuit 6 can be suppressed, deterioration of the surge suppression circuit 6 due to the surge voltage can be suppressed.
（３）ノイズフィルタ７に入力されるサージ電圧が抑制されるので、ノイズフィルタを構成する素子の劣化を抑制することができる。従って、ノイズフィルタ７の劣化による漏電の発生を抑制することができる。
(3) Since the surge voltage input to the noise filter 7 is suppressed, it is possible to suppress deterioration of elements constituting the noise filter. Therefore, the occurrence of electric leakage due to the deterioration of the noise filter 7 can be suppressed.
（４）サージ抑制回路６により、交流出力電圧に含まれる高周波・高調波成分のノイズのピーク値を所定電圧にクランプすることができるので、ノイズフィルタ７及び電源回路８の耐電圧特性を低く設定することができる。
(4) Since the surge suppression circuit 6 can clamp the peak value of high-frequency / harmonic component noise contained in the AC output voltage to a predetermined voltage, the withstand voltage characteristics of the noise filter 7 and the power supply circuit 8 are set low. can do.
（５）ノイズフィルタ７は、サージ抑制回路６でクランプされた電圧からノーマルコモンノイズを抑制して、電源回路８の入力電圧の安定化させることができる。従って、電源回路８の出力電圧を安定化させることができるので、内部回路９の動作を安定化させることができる。
(5) The noise filter 7 can stabilize normal input noise from the voltage clamped by the surge suppression circuit 6 and stabilize the input voltage of the power supply circuit 8. Therefore, since the output voltage of the power supply circuit 8 can be stabilized, the operation of the internal circuit 9 can be stabilized.
（６）電源回路８の出力電圧を安定化させることができるので、サージ電圧等に起因する内部回路９への突入電流を阻止することができる。従って、突入電流による内部回路９の損傷を防止することができる。このため、内部回路９を構成するレーザ発振器等の素子の損傷による交換作業を不要とし、修理に要する部品コスト及び時間コストを低減することができる。
(6) Since the output voltage of the power supply circuit 8 can be stabilized, an inrush current to the internal circuit 9 due to a surge voltage or the like can be prevented. Therefore, damage to the internal circuit 9 due to inrush current can be prevented. This eliminates the need for replacement work due to damage to elements such as the laser oscillator constituting the internal circuit 9, and reduces the cost of parts and time required for repair.
（７）降圧絶縁トランス５の後段でのサージ電圧による突入電流を抑制することができるので、降圧絶縁トランス５の後段での過電流防止用のブレーカの設置を省略することができる。
(7) Since an inrush current due to a surge voltage at the subsequent stage of the step-down insulating transformer 5 can be suppressed, the installation of a breaker for preventing overcurrent at the subsequent stage of the step-down insulating transformer 5 can be omitted.
（８）降圧絶縁トランス５の後段でのサージ電圧による突入電流を抑制することができるので、このレーザ加工装置をノイズの多い商用電源１が供給される環境に設置することが可能となる。
(8) Since an inrush current due to a surge voltage in the subsequent stage of the step-down insulating transformer 5 can be suppressed, this laser processing apparatus can be installed in an environment where the commercial power supply 1 with a lot of noise is supplied.
（９）降圧絶縁トランス５の後段への突入電流の発生に起因する商用電源１の電圧変動を抑制することができる。従って、このレーザ加工装置の設置位置での電源環境を安定化させることができる。
(9) The voltage fluctuation of the commercial power source 1 due to the occurrence of the inrush current to the subsequent stage of the step-down insulating transformer 5 can be suppressed. Therefore, the power supply environment at the installation position of the laser processing apparatus can be stabilized.
なお、上記実施形態は以下のように変更してもよい。
・降圧絶縁トランス５を、ノイズフィルタ７と電源回路８との間に配設してもよい。
本発明の主題は、上記した特定の実施例および変更例の全ての特徴よりも少ない特徴に存在する可能性がある。本発明の範囲は、請求の範囲および等価物の全範囲と共に確定されるべきである。 In addition, you may change the said embodiment as follows.
The step-down insulating transformer 5 may be disposed between the noise filter 7 and the power supply circuit 8.
The subject matter of the invention may reside in fewer features than all the features of the specific embodiments and variations described above. The scope of the invention should be determined along with the full scope of the claims and equivalents.
・降圧絶縁トランス５を、ノイズフィルタ７と電源回路８との間に配設してもよい。
本発明の主題は、上記した特定の実施例および変更例の全ての特徴よりも少ない特徴に存在する可能性がある。本発明の範囲は、請求の範囲および等価物の全範囲と共に確定されるべきである。 In addition, you may change the said embodiment as follows.
The step-down insulating transformer 5 may be disposed between the noise filter 7 and the power supply circuit 8.
The subject matter of the invention may reside in fewer features than all the features of the specific embodiments and variations described above. The scope of the invention should be determined along with the full scope of the claims and equivalents.
１…商用電源、４…ブレーカ、５…降圧絶縁トランス、６…ノイズ抑制装置（サージ抑制回路）、７…ノイズ抑制装置（ノイズフィルタ）、８…電源回路。
DESCRIPTION OF SYMBOLS 1 ... Commercial power supply, 4 ... Breaker, 5 ... Step-down insulation transformer, 6 ... Noise suppression device (surge suppression circuit), 7 ... Noise suppression device (noise filter), 8 ... Power supply circuit.
Claims (5)
- レーザ加工装置であって、
商用電源がブレーカを介して供給されて、商用電源に含まれるノイズを抑制するノイズ抑制装置と、
前記ノイズ抑制装置から供給される商用電源に基づいて、直流電源電圧を生成して内部回路に供給する電源回路と、
前記ブレーカと前記電源回路との間のいずれかに介在され、前記商用電源の電圧を降圧する降圧絶縁トランスと、を備えるレーザ加工装置。 A laser processing apparatus,
A noise suppression device that suppresses noise included in the commercial power source when the commercial power source is supplied via the breaker;
Based on the commercial power supplied from the noise suppression device, a power supply circuit that generates a DC power supply voltage and supplies it to the internal circuit;
A laser processing apparatus comprising: a step-down insulating transformer interposed between any one of the breaker and the power supply circuit and stepping down the voltage of the commercial power supply. - 請求項１に記載のレーザ加工装置において、
前記降圧絶縁トランスは、前記ブレーカと前記ノイズ抑制装置との間に介在される、レーザ加工装置。 In the laser processing apparatus of Claim 1,
The step-down insulation transformer is a laser processing apparatus interposed between the breaker and the noise suppression apparatus. - 請求項２に記載のレーザ加工装置において、
前記ノイズ抑制装置は、サージ抑制回路とノイズフィルタとを含む、レーザ加工装置。 In the laser processing apparatus of Claim 2,
The noise suppression device is a laser processing device including a surge suppression circuit and a noise filter. - 請求項３に記載のレーザ加工装置において、
前記降圧絶縁トランスは、
前記ブレーカから供給された出力電圧を受け取る一次側コイルと、
降圧電圧を前記サージ抑制回路に供給する二次側コイルと、を含む、レーザ加工装置。 In the laser processing apparatus of Claim 3,
The step-down insulation transformer
A primary coil for receiving an output voltage supplied from the breaker;
And a secondary coil for supplying a step-down voltage to the surge suppression circuit. - 請求項１に記載のレーザ加工装置において、
前記降圧絶縁トランスは、前記ノイズ抑制装置と前記電源回路との間に介在される、レーザ加工装置。 In the laser processing apparatus of Claim 1,
The step-down insulation transformer is a laser processing apparatus interposed between the noise suppression device and the power supply circuit.
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| JP2016213796A JP2018074813A (en) | 2016-10-31 | 2016-10-31 | Laser processing device |
| JP2016-213796 | 2016-10-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53106445A (en) * | 1977-02-28 | 1978-09-16 | Toshiba Corp | Thunderbolt protector |
| JPH0413490A (en) * | 1990-05-02 | 1992-01-17 | Mitsubishi Electric Corp | Laser beam machine |
| JPH0523562U (en) * | 1991-09-02 | 1993-03-26 | ミヤチテクノス株式会社 | Laser power supply |
| JP2016112609A (en) * | 2014-12-18 | 2016-06-23 | パナソニックＩｐマネジメント株式会社 | Laser cutting apparatus and laser cutting method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5020262B1 (en) * | 1969-04-10 | 1975-07-14 | ||
| JPS5487839A (en) * | 1977-12-24 | 1979-07-12 | Matsushita Electric Ind Co Ltd | Dc voltage stabilizer |
| JPH03231406A (en) * | 1990-02-07 | 1991-10-15 | Chiyoda Corp | Electrical connector with non-energized contact |
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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53106445A (en) * | 1977-02-28 | 1978-09-16 | Toshiba Corp | Thunderbolt protector |
| JPH0413490A (en) * | 1990-05-02 | 1992-01-17 | Mitsubishi Electric Corp | Laser beam machine |
| JPH0523562U (en) * | 1991-09-02 | 1993-03-26 | ミヤチテクノス株式会社 | Laser power supply |
| JP2016112609A (en) * | 2014-12-18 | 2016-06-23 | パナソニックＩｐマネジメント株式会社 | Laser cutting apparatus and laser cutting method |
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