CN220312146U - Laser galvanometer driving circuit, laser galvanometer driving device and processing equipment - Google Patents
Laser galvanometer driving circuit, laser galvanometer driving device and processing equipment Download PDFInfo
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- CN220312146U CN220312146U CN202321571088.3U CN202321571088U CN220312146U CN 220312146 U CN220312146 U CN 220312146U CN 202321571088 U CN202321571088 U CN 202321571088U CN 220312146 U CN220312146 U CN 220312146U
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
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- 238000007599 discharging Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
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Abstract
The application relates to a drive circuit of laser galvanometer, laser galvanometer drive arrangement and processing equipment, wherein drive circuit includes: the positive power supply voltage receiving end of the voltage regulating module is used for being connected with the output end of the positive power supply; the first driving voltage receiving end of the positive power supply control module is connected with the first driving voltage output end, the positive power supply receiving end is used for being connected with the output end of a positive power supply, and the positive power supply output end is used for being connected with the positive power supply input end of the laser galvanometer; the second driving voltage receiving end of the negative power supply control module is connected with the second driving voltage output end, the negative power supply receiving end is used for being connected with the output end of the negative power supply, and the negative power supply output end is used for being connected with the negative power supply input end of the laser galvanometer. The driving circuit can prevent the negative power supply output branch from being conducted before the positive power supply output branch, and can improve the laser processing precision and the safety stability.
Description
Technical Field
The present disclosure relates to the field of laser processing, and in particular, to a driving circuit for a laser galvanometer, a driving device for a laser galvanometer, and a processing device.
Background
Along with the continuous development of laser processing technology and the continuous and abundant application scenes of laser processing products, the requirements on laser processing precision are higher and higher. The laser galvanometer driver is used as an important driving component for laser processing and is important to ensure the laser processing precision.
The time difference between positive and negative power supplies output by the conventional laser galvanometer driver and rated voltage is large, so that a laser lens is driven unexpectedly when being electrified, and the laser processing precision is seriously affected.
Disclosure of Invention
In view of the above, it is necessary to provide a laser galvanometer driving circuit, a laser galvanometer driving device, and a processing apparatus.
A driving circuit of a laser galvanometer, comprising:
the voltage regulation module comprises a positive power supply voltage receiving end, a first driving voltage output end and a second driving voltage output end, wherein the positive power supply voltage receiving end is used for being connected with the output end of a positive power supply;
the positive power supply control module comprises a first driving voltage receiving end, a positive power supply receiving end and a positive power supply output end, wherein the first driving voltage receiving end is connected with the first driving voltage output end, the positive power supply receiving end is used for being connected with the output end of a positive power supply, and the positive power supply output end is used for being connected with the positive power supply input end of the laser galvanometer;
the negative power supply control module comprises a second driving voltage receiving end, a negative power supply receiving end and a negative power supply output end, wherein the second driving voltage receiving end is connected with the second driving voltage output end, the negative power supply receiving end is used for being connected with the output end of the negative power supply, and the negative power supply output end is used for being connected with the negative power supply input end of the laser galvanometer.
In one embodiment, the voltage regulation module further comprises:
the voltage dividing unit is used for connecting the positive power supply voltage receiving end with the output end of the positive power supply;
the voltage stabilizing unit is connected with the voltage dividing unit and used for outputting a second driving voltage to the second driving voltage output end;
and the charge-discharge unit is connected with the voltage stabilizing unit and is used for receiving the second driving voltage and charging based on the second driving voltage so as to output the first driving voltage to the first driving voltage output end.
In one embodiment, the voltage dividing unit includes a first resistor, the voltage stabilizing unit includes a voltage stabilizing diode, a first end of the first resistor is connected to the output end of the positive power supply, a second end of the first resistor is connected to the first end of the voltage stabilizing diode, and a second end of the voltage stabilizing diode is grounded.
In one embodiment, the charge-discharge unit includes a second resistor and a first capacitor, a first end of the second resistor is connected to the voltage stabilizing unit, a second end of the second resistor is connected to a first end of the first capacitor, and a second end of the first capacitor is grounded.
In one embodiment, the positive power control module further comprises:
the first switch unit is connected with a first driving voltage output end of the voltage regulating module through the first driving voltage receiving end and is used for receiving a first driving voltage and outputting a positive power supply branch voltage when the first driving voltage is larger than a first conducting voltage;
the second switch unit is connected with the first switch unit and the positive power supply output end through the positive power supply receiving end, receives the positive power supply branch voltage and the positive power supply voltage, and conducts the positive power supply output branch when the difference value between the positive power supply branch voltage and the positive power supply voltage is larger than a second conducting voltage.
In one embodiment, the first switching unit includes a first switching tube and a third resistor, a first end of the first switching tube is connected to a first driving voltage output end of the voltage regulation module, a second end of the first switching tube is grounded, a third end of the first switching tube is connected to a first end of the third resistor and the second switching unit, and a second end of the third resistor is connected to an output end of the positive power supply.
In one embodiment, the second switching unit includes a second switching tube, a first pin, a second pin and a third pin of the second switching tube are all connected with the output end of the positive power supply through the positive power supply receiving end, a fourth pin of the second switching tube is connected with the first switching unit, and a fifth pin, a sixth pin, a seventh pin and an eighth pin of the second switching tube are all connected with the positive power supply input end of the laser galvanometer.
In one embodiment, the negative power supply control module includes:
the third switch unit is connected with a second driving voltage output end of the voltage regulating module through the second driving voltage receiving end, is used for the second driving voltage and outputs negative power supply branch voltage when the second driving voltage is larger than a third conducting voltage;
and the fourth switch unit is connected with the third switch unit, is connected with the output end of the negative power supply through the negative power supply receiving end, receives the negative power supply branch voltage and the negative power supply voltage, and turns on the negative power supply output branch when the difference value between the negative power supply branch voltage and the negative power supply voltage is larger than a fourth conduction voltage.
In one embodiment, the third switching unit includes a third switching tube, a fourth resistor and a fifth resistor, where a first end of the fourth resistor is connected to the second driving voltage output end of the voltage regulation module, a second end of the fourth resistor is connected to the first end of the third switching tube, a second end of the third switching tube is grounded, a third end of the third switching tube is connected to the first end of the fifth resistor, and a second end of the fifth resistor is connected to the output end of the negative power supply.
In one embodiment, the fourth switching unit includes a fourth switching tube, the first pin, the second pin and the third pin of the fourth switching tube are all connected with the output end of the negative power supply through the negative power supply receiving end, the fourth pin of the fourth switching tube is connected with the third switching unit, and the fifth pin, the sixth pin, the seventh pin and the eighth pin of the fourth switching tube are all connected with the negative power supply input end of the laser galvanometer.
A laser galvanometer drive comprising:
such as the laser galvanometer drive circuit described above.
A processing apparatus comprising:
such as the laser galvanometer drive circuit described above.
Above-mentioned drive circuit, laser galvanometer drive arrangement and processing equipment of laser galvanometer, wherein the drive circuit of laser galvanometer includes: the voltage regulation module comprises a positive power supply voltage receiving end, a first driving voltage output end and a second driving voltage output end, wherein the positive power supply voltage receiving end is used for being connected with the output end of a positive power supply; the positive power supply control module comprises a first driving voltage receiving end, a positive power supply receiving end and a positive power supply output end, wherein the first driving voltage receiving end is connected with the first driving voltage output end, the positive power supply receiving end is used for being connected with the output end of the positive power supply, and the positive power supply output end is used for being connected with the positive power supply input end of the laser galvanometer; the negative power supply control module comprises a second driving voltage receiving end, a negative power supply receiving end and a negative power supply output end, wherein the second driving voltage receiving end is connected with the second driving voltage output end, the negative power supply receiving end is used for being connected with the output end of the negative power supply, and the negative power supply output end is used for being connected with the negative power supply input end of the laser galvanometer. In the driving circuit of the laser galvanometer, the first driving voltage and the second driving voltage which can be generated only by depending on the positive power supply voltage are respectively used for determining the conduction condition of the positive power supply output branch in the positive power supply control module and the negative power supply output branch in the negative power supply control module so as to control the time of outputting the positive power supply voltage and the negative power supply voltage to the laser galvanometer, so that the negative power supply output branch can be prevented from being conducted before the positive power supply output branch, the positive power supply voltage and the negative power supply voltage can meet rated values and are synchronously output to the laser galvanometer, the working reliability of the laser galvanometer driver is ensured, the running stability of the laser galvanometer is improved, and the laser processing precision and the safety stability are further improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram schematically illustrating a driving circuit of a laser galvanometer according to an embodiment;
FIG. 2 is a schematic block diagram showing a specific configuration of the voltage adjustment module 20 in one embodiment;
FIG. 3 is a schematic block diagram of a specific structure of the positive power control module 40 in one embodiment;
FIG. 4 is a schematic block diagram of a specific architecture of a negative power supply control module 60 in one embodiment;
fig. 5 is a schematic diagram showing a specific structure of a driving circuit of the laser galvanometer in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
FIG. 1 is a block diagram schematically illustrating a driving circuit of a laser galvanometer according to an embodiment.
In this embodiment, as shown in fig. 1, the driving circuit of the laser galvanometer includes a voltage adjusting module 20, a positive power control module 40 and a negative power control module 60.
The voltage adjustment module 20 includes a positive power supply voltage receiving end, a first driving voltage output end and a second driving voltage output end, where the positive power supply voltage receiving end is used to be connected with the output end of the positive power supply and receive the positive power supply voltage, the voltage adjustment module is used to output a first driving voltage and a second driving voltage according to the positive power supply voltage, and the driving voltage output end is used to output the first driving voltage and the second driving voltage.
The voltage adjusting module 20 may be an adjusting module connected to the positive power source, the positive power source control module 40 and the negative power source control module 60, and configured to generate a first driving voltage and a second driving voltage according to the positive power source voltage output by the positive power source, and output the first driving voltage and the second driving voltage to the positive power source control module 40 and the negative power source control module 60, respectively.
The first driving voltage may be a regulating signal that the voltage regulating module 20 generates according to the positive power supply voltage outputted from the positive power supply and outputs via a first driving voltage output terminal connected to the positive power supply control module 40; the second driving voltage may be a regulating signal that the voltage regulating module 20 generates according to the positive power supply voltage output from the positive power supply and outputs via a second driving voltage output terminal connected to the negative power supply control module 60.
The positive power supply control module 40, the positive power supply control module 40 includes a first driving voltage receiving end, a positive power supply receiving end and a positive power supply output end, the first driving voltage receiving end is connected with the first driving voltage output end of the voltage regulating module 20 and is used for receiving the first driving voltage, the positive power supply receiving end is used for being connected with the output end of the positive power supply and receiving the positive power supply voltage, the positive power supply control module 40 is used for conducting the positive power supply output branch according to the first driving voltage and the positive power supply voltage, the positive power supply output end is used for being connected with the positive power supply input end of the laser galvanometer, and the positive power supply output branch is arranged between the positive power supply receiving end and the positive power supply output end.
The positive power supply output branch may be connected to the output end of the positive power supply and the laser galvanometer, and the positive power supply control module 40 determines the conducting condition according to the first driving voltage and the positive power supply voltage, so as to control the positive power supply voltage to be output to the circuit of the laser galvanometer.
The positive power output branch is disposed between the positive power receiving terminal and the positive power output terminal, which includes: the positive power receiving end of the positive power control module 40 is connected with the output end of the positive power, and the positive power output end is connected with the positive power input end of the laser galvanometer.
The negative power supply control module 60, the negative power supply control module 60 includes a second driving voltage receiving end, a negative power supply receiving end and a negative power supply output end, the second driving voltage receiving end is connected with the second driving voltage output end of the voltage regulating module 20 and is used for receiving the second driving voltage, the negative power supply receiving end is used for being connected with the output end of the power supply and receiving the negative power supply voltage, the negative power supply control module is used for conducting the negative power supply output branch according to the second driving voltage and the negative power supply voltage, the negative power supply output end is used for being connected with the negative power supply input end of the laser galvanometer, and the negative power supply output branch is arranged between the negative power supply receiving end and the negative power supply output end.
The negative power supply output branch may be connected to the output end of the negative power supply and the laser galvanometer respectively, and the negative power supply control module 60 determines the conducting condition according to the second driving voltage and the negative power supply voltage, so as to control the negative power supply voltage to be output to the circuit of the laser galvanometer.
The negative power output branch is arranged between the negative power receiving end and the negative power output end, and comprises the following conditions: the negative power supply receiving end of the negative power supply control module 60 is connected with the output end of the negative power supply, and the output end of the negative power supply is connected with the negative power supply input end of the laser galvanometer.
Specifically, when positive and negative power supplies are provided for the laser galvanometer, the voltage regulating module 20 receives the positive power supply voltage through the positive power supply voltage receiving end, generates a first driving voltage and a second driving voltage according to the positive power supply voltage, and outputs the first driving voltage and the second driving voltage through the first driving voltage output end and the second driving voltage output end respectively; the positive power supply control module 40 receives the first driving voltage through the first driving voltage receiving end, receives the positive power supply voltage through the positive power supply receiving end, and determines the conduction condition of a positive power supply output branch arranged between the positive power supply receiving end and the positive power supply output end according to the first driving voltage and the positive power supply voltage so as to control the positive power supply voltage to be output to the positive power supply input end of the laser galvanometer; the negative power supply control module 60 receives the second driving voltage through the second driving voltage receiving end, receives the negative power supply voltage through the negative power supply receiving end, and determines the conduction condition of a negative power supply output branch arranged between the negative power supply receiving end and the negative power supply output end according to the second driving voltage and the negative power supply voltage so as to control the negative power supply voltage to be output to the negative power supply input end of the laser galvanometer.
According to the driving circuit of the laser galvanometer, the first driving voltage and the second driving voltage which can be generated only by depending on the positive power supply voltage are respectively determined on the positive power supply output branch in the positive power supply control module 40 and the negative power supply output branch in the negative power supply control module 60 so as to control the time of outputting the positive power supply voltage and the negative power supply voltage to the laser galvanometer, the negative power supply output branch can be prevented from being conducted before the positive power supply output branch, the positive power supply voltage and the negative power supply voltage can meet rated values and are synchronously output to the laser galvanometer, the working reliability of the laser galvanometer driver is ensured, the running stability of the laser galvanometer is improved, and the laser processing precision and the safety stability are further improved.
Fig. 2 is a schematic block diagram showing a specific structure of the voltage adjustment module 20 in one embodiment.
In this embodiment, as shown in fig. 2, the voltage adjusting module 20 further includes a voltage dividing unit 220, a voltage stabilizing unit 240, and a charging and discharging unit 260.
The voltage dividing unit 220 is configured to be connected to an output terminal of the positive power supply through a positive power supply voltage receiving terminal.
The voltage dividing unit 220 may be a component unit that is connected to the output terminal of the positive power supply through the positive power supply voltage receiving terminal of the voltage adjusting module 20, receives the positive power supply voltage output by the positive power supply, and performs voltage dividing processing on the positive power supply voltage. Alternatively, the voltage dividing unit 220 may be a voltage dividing resistor.
The voltage stabilizing unit 240 is connected to the voltage dividing unit 220, and is configured to output the second driving voltage to the second driving voltage output terminal.
The voltage stabilizing unit 240 may be a component unit connected to the voltage dividing unit 220, connected to the negative power supply control module 60 through a second driving voltage output end of the voltage adjusting module 20, receiving the divided positive power supply voltage output by the voltage dividing unit 220, performing voltage stabilizing processing on the divided positive power supply voltage to generate a second driving voltage, and outputting the second driving voltage to the second driving voltage output end connected to the negative power supply control module 60. Alternatively, the voltage stabilizing unit 240 may be a zener diode.
The charge and discharge unit 260 is connected to the voltage stabilizing unit 240, and is configured to receive the second driving voltage, and charge based on the second driving adjustment voltage, so as to output the first driving voltage to the first driving voltage output terminal.
The charge and discharge unit 260 may be a constituent unit connected to the voltage stabilizing unit 240, connected to the positive power supply control module 40 through a driving voltage output terminal of the voltage adjusting module 20, receiving a second driving voltage output from the voltage stabilizing unit 240, performing charge energy storage based on the second driving voltage, generating a charge storage voltage, and discharging and outputting a first driving voltage to a first driving voltage output terminal connected to the positive power supply control module 40 according to the charge storage voltage. Alternatively, the charge and discharge unit 260 may be a capacitive-resistive charge and discharge circuit.
The charge and discharge unit 260 receives the second driving voltage output by the voltage stabilizing unit 240, and performs a process of storing electric energy; the charge storage voltage may be a voltage formed when the charge and discharge unit 260 performs charge and energy storage; the first driving voltage may be a voltage discharged during the discharging of the charge and discharge unit 260 according to the charge storage voltage.
Specifically, when positive and negative power supplies are provided for the laser galvanometer, the positive power supply voltage output by the positive power supply is received through the voltage dividing unit 220, wherein the positive power supply voltage receiving end of the voltage regulating module 20 is connected with the output end of the positive power supply, and the positive power supply voltage is divided; the voltage stabilizing unit 240 is connected with the voltage dividing unit 220 and connected with the negative power supply control module 60 through a second driving voltage output end of the voltage adjusting module 20, receives the divided positive power supply voltage output by the voltage dividing unit 220, performs voltage stabilizing treatment on the divided positive power supply voltage to generate a second driving voltage, and outputs the second driving voltage to a second driving voltage output end connected with the negative power supply control module 60; the charge and discharge unit 260 connected to the voltage stabilizing unit 240 and connected to the positive power control module 40 through the first driving voltage output terminal of the voltage adjusting module 20 receives the second driving voltage output by the voltage stabilizing unit 240, performs charge and energy storage based on the second driving voltage and generates a charge storage voltage, and discharges the first driving voltage to the first driving voltage output terminal connected to the positive power control module 40 according to the charge storage voltage.
In the driving circuit of the laser galvanometer provided in this embodiment, the voltage dividing unit 220, the voltage stabilizing unit 240 and the charge and discharge unit 260 in the voltage adjusting module 20 are used in cooperation, and the first driving voltage and the second driving voltage are generated only based on the positive power voltage output by the positive power supply and are output to the positive power supply control module 40 and the negative power supply control module 60 respectively.
Fig. 3 is a schematic block diagram illustrating a specific structure of the positive power control module 40 in one embodiment.
In the present embodiment, as shown in fig. 3, the positive power control module 40 includes a first switching unit 420 and a second switching unit 440.
The first switch unit 420 is connected to the first driving voltage output end of the voltage adjustment module 20 through the first driving voltage receiving end, and is configured to receive the first driving voltage, and output the positive power supply branch voltage when the first driving voltage is greater than the first on voltage.
The first switching unit 420 may be a constituent unit that is connected to the first driving voltage output terminal of the voltage adjustment module 20 through the first driving voltage receiving terminal of the positive power control module 40, receives the first driving voltage output by the voltage adjustment module 20, and generates the positive power supply branch voltage when the first driving voltage is greater than the first on voltage. Alternatively, the first switching unit 420 may be a circuit including a switching tube.
The first turn-on voltage may be a minimum voltage driving the first switching unit 420 to be switched to a turned-on state; the positive power supply branch voltage may be a voltage outputted to the second switching unit 440 after the first switching unit 420 is switched to the on state.
The second switching unit 440 is connected to the first switching unit 420 and the positive power supply output terminal through the positive power supply receiving terminal, receives the positive power supply branch voltage and the positive power supply voltage, and turns on the positive power supply output branch when the difference between the positive power supply branch voltage and the positive power supply voltage is greater than the second turn-on voltage.
The second switching unit 440 may be a component unit connected to the first switching unit 420, connected to the output end of the positive power supply through the positive power supply receiving end of the positive power supply control module 40, connected to the positive power supply input end of the laser galvanometer through the positive power supply output end of the positive power supply control module 40, and configured to receive the positive power supply branch voltage output by the first switching unit 420 and the positive power supply voltage output by the positive power supply, and to conduct the positive power supply output branch when the voltage difference between the positive power supply branch voltage and the positive power supply voltage is greater than the second conducting voltage. Alternatively, the second switching unit 440 may be a circuit including a switching tube.
The second turn-on voltage may be a minimum voltage that drives the second switching unit 440 to be switched to the on state.
Specifically, when positive and negative power is provided to the laser galvanometer, the first driving voltage output by the voltage adjusting module 20 is received through the first switching unit 420, in which the first driving voltage receiving end of the positive power control module 40 is connected to the first driving voltage output end of the voltage adjusting module 20, and when the first driving voltage is greater than the first on voltage, a positive power branch voltage is generated; the second switch unit 440 is connected to the first switch unit 420, and is connected to the output end of the positive power supply through the positive power supply receiving end of the positive power supply control module 40, and the positive power supply output end of the positive power supply control module 40 is connected to the positive power supply input end of the laser galvanometer, receives the positive power supply branch voltage output by the first switch unit 420 and the positive power supply voltage output by the positive power supply, and when the voltage difference between the positive power supply branch voltage and the positive power supply voltage is greater than the second conducting voltage, turns on the positive power supply output branch so that the positive power supply voltage is output to the positive power supply input end of the laser galvanometer.
In the driving circuit of the laser galvanometer provided in this embodiment, the first switch unit 420 and the second switch unit 440 in the positive power control module 40 are used in cooperation to determine the conduction condition of the positive power output branch in the positive power control module 40, so as to control the time of outputting positive power voltage to the laser galvanometer, realize that the positive power voltage meets the rated value and then is output to the laser galvanometer, ensure the working reliability of the laser galvanometer driver, thereby improving the running stability of the laser galvanometer, and further improving the laser processing precision and the safety stability.
Fig. 4 is a schematic block diagram showing a specific structure of the negative power supply control module 60 in one embodiment.
In the present embodiment, as shown in fig. 4, the negative power supply control module 60 includes a third switching unit 620 and a fourth switching unit 640.
The third switching unit 620 is connected to the second driving voltage output end of the voltage adjusting module 20 through the second driving voltage receiving end, and is configured to receive the second driving voltage, and output the negative power supply branch voltage when the second driving voltage is greater than the third conducting voltage.
The third switching unit 620 may be a constituent unit that is connected to the second driving voltage output terminal of the voltage adjustment module 20 through the second driving voltage receiving terminal of the negative power supply control module 60, receives the second driving voltage output by the voltage adjustment module 20, and generates the negative power supply branch voltage when the second driving voltage is greater than the third on voltage. Alternatively, the third switching unit 620 may be a circuit including a switching tube.
The third on-voltage may be a minimum voltage driving the third switching unit 620 to switch to the on-state; the negative power supply branch voltage may be a voltage outputted to the fourth switching unit 640 after the third switching unit 620 is switched to the on state.
The fourth switching unit 640 is connected to the third switching unit 620, and is connected to the output end of the negative power supply through the negative power supply receiving end, receives the negative power supply branch voltage and the negative power supply voltage, and turns on the negative power supply output branch when the difference between the negative power supply branch voltage and the negative power supply voltage is greater than the fourth turn-on voltage.
The fourth switching unit 640 may be a component unit connected to the third switching unit 620, connected to an output end of the negative power supply through a negative power supply receiving end of the negative power supply control module 60, connected to a negative power supply input end of the laser galvanometer through a negative power supply output end of the negative power supply control module 60, receiving a negative power supply branch voltage output by the third switching unit 620 and a negative power supply voltage output by the negative power supply, and switching on the negative power supply output branch when a voltage difference between the negative power supply branch voltage and the negative power supply voltage is greater than a fourth switching-on voltage. Alternatively, the fourth switching unit 640 may be a circuit including a switching tube.
The fourth turn-on voltage may be a minimum voltage that drives the fourth switching unit 640 to switch to the on state.
Specifically, when positive and negative power is supplied to the laser galvanometer, the third switching unit 620, which is connected to the second driving voltage output end of the voltage adjustment module 20 through the second driving voltage receiving end of the negative power control module 60, receives the second driving voltage output by the voltage adjustment module 20, and generates a negative power supply branch voltage when the second driving voltage is greater than the third conducting voltage; and a fourth switching unit 640 connected to the third switching unit 620, connected to an output terminal of the negative power through a negative power receiving terminal of the negative power control module 60, and connected to a negative power input terminal of the laser galvanometer through a negative power output terminal of the negative power control module 60, receiving a negative power branch voltage outputted from the third switching unit 620 and a negative power voltage outputted from the negative power, and when a voltage difference between the negative power branch voltage and the negative power voltage is greater than a fourth turn-on voltage, turning on the negative power output branch so that the negative power voltage is outputted to the negative power input terminal of the laser galvanometer.
In the driving circuit of the laser galvanometer provided in this embodiment, the third switch unit 620 and the fourth switch unit 640 in the negative power supply control module 60 are used in cooperation to determine the conduction condition of the negative power supply output branch in the negative power supply control module 60, so as to control the time of outputting the negative power supply voltage to the laser galvanometer, realize that the negative power supply voltage meets the rated value and then is output to the laser galvanometer, ensure the working reliability of the laser galvanometer driver, thereby improving the running stability of the laser galvanometer, and further improving the laser processing precision and the safety stability.
Fig. 5 is a schematic diagram of a specific structure of a driving circuit of the laser galvanometer according to an embodiment.
In this embodiment, as shown in fig. 5, the driving circuit of the laser galvanometer includes a voltage adjusting module 20, a positive power control module 40 and a negative power control module 60.
The voltage adjusting module 20 includes a voltage dividing unit 220, a voltage stabilizing unit 240, and a charging and discharging unit 260.
The voltage dividing unit 220 includes a first resistor R1, the voltage stabilizing unit 240 includes a voltage stabilizing diode D1, a first end of the first resistor R1 is connected to an output end of the positive power supply, a second end of the first resistor R1 is connected to a first end of the voltage stabilizing diode D1, and a second end of the voltage stabilizing diode D1 is grounded.
Alternatively, the first terminal of the zener diode D1 may be an anode of the zener diode D1, and the second terminal of the zener diode D1 may be a cathode of the zener diode D1.
The charge-discharge unit 260 includes a second resistor R2 and a first capacitor C1, a first end of the second resistor R2 is connected to the voltage stabilizing unit 240, a second end of the second resistor R2 is connected to the first end of the first capacitor C1, and a second end of the first capacitor C1 is grounded.
In addition, the positive power control module 40 includes a first switching unit 420 and a second switching unit 440.
The first switching unit 420 includes a first switching tube Q1 and a third resistor R3, a first end of the first switching tube Q1 is connected to a first driving voltage output end of the voltage adjusting module 20, a second end of the first switching tube Q1 is grounded, a third end of the first switching tube Q1 is connected to a first end of the third resistor R3 and the second switching unit 440, and a second end of the third resistor R3 is connected to an output end of the positive power supply.
Alternatively, the first switching transistor Q1 may be an N-channel MOS transistor, the first terminal, the second terminal and the third terminal of the first switching transistor Q1 may be a gate, a source and a drain of the N-channel MOS transistor, respectively, and the first turn-on voltage of the first switching unit 420 may be a gate-source withstand voltage of the N-channel MOS transistor.
The second switching unit 440 includes a second switching tube Q2, where a first pin, a second pin and a third pin of the second switching tube Q2 are all connected with an output end of the positive power supply through a positive power supply receiving end, a fourth pin of the second switching tube Q2 is connected with the first switching unit 420, and a fifth pin, a sixth pin, a seventh pin and an eighth pin of the second switching tube Q2 are all connected with a positive power supply input end of the laser galvanometer.
Optionally, the second switching transistor Q2 may be a P-channel MOS transistor, the first pin, the second pin and the third pin of the second switching transistor Q2 may be pins connected to the source of the P-channel MOS transistor, the fourth pin of the second switching transistor Q2 may be a pin connected to the gate of the P-channel MOS transistor, and the fifth pin, the sixth pin, the seventh pin and the eighth pin of the second switching transistor Q2 may be pins connected to the drain of the P-channel MOS transistor; the second turn-on voltage of the second switching unit 440 may be a gate-source withstand voltage value of the P-channel MOS transistor.
Meanwhile, the negative power control module 60 includes a third switching unit 620 and a fourth switching unit 640.
The third switching unit 620 includes a third switching tube Q3, a fourth resistor R4, and a fifth resistor R5, where a first end of the fourth resistor R4 is connected to the second driving voltage output end of the voltage adjusting module 20, a second end of the fourth resistor R4 is connected to the first end of the third switching tube Q3, a second end of the third switching tube Q3 is grounded, a third end of the third switching tube Q3 is connected to the first end of the fifth resistor R5, and a second end of the fifth resistor R5 is connected to the output end of the negative power supply.
Alternatively, the third switching transistor Q3 may be a P-channel MOS transistor, the first end, the second end and the third end of the third switching transistor Q3 may be a source, a gate and a drain of the P-channel MOS transistor, respectively, and the third turn-on voltage of the third switching unit 620 may be a gate-source withstand voltage of the P-channel MOS transistor.
The fourth switching unit 640 includes a fourth switching tube Q4, where a first pin, a second pin and a third pin of the fourth switching tube Q4 are all connected with an output end of the negative power supply through a negative power supply receiving end, a fourth pin of the fourth switching tube Q4 is connected with the third switching unit, and a fifth pin, a sixth pin, a seventh pin and an eighth pin of the fourth switching tube Q4 are all connected with an input end of the negative power supply of the laser galvanometer.
Optionally, the fourth switching transistor Q4 may be an N-channel MOS transistor, the first pin, the second pin and the third pin of the fourth switching transistor Q4 may be pins connected to the source of the N-channel MOS transistor, the fourth pin of the second switching transistor Q2 may be pins connected to the gate of the N-channel MOS transistor, and the fifth pin, the sixth pin, the seventh pin and the eighth pin of the second switching transistor Q2 may be pins connected to the drain of the N-channel MOS transistor; the fourth turn-on voltage of the fourth switching unit 640 may be a gate-source withstand voltage value of the N-channel MOS transistor.
The first switching tube Q1, the second switching tube Q2, the third switching tube Q3 and the fourth switching tube Q4 all require low dc resistance and high gate-source withstand voltage, and the first switching tube Q1 and the third switching tube Q3 all require a small operating current, and the second switching tube Q2 and the fourth switching tube Q4 all require a large operating current.
Specifically, when positive and negative power supplies are provided for the laser galvanometer, if the positive power supply is powered on first or the positive and negative power supplies are powered on simultaneously, the first resistor R1 receives positive power supply voltage output by the positive power supply and performs voltage division processing on the positive power supply voltage; the voltage stabilizing diode D1 receives the divided positive power supply voltage, and the voltage of two ends gradually rises along with the positive power supply voltage until the voltage stabilizing value of the voltage stabilizing diode D1 is reached to generate a second driving voltage; the second resistor R2 and the first capacitor C1 receive the second driving voltage, charge and store energy based on the second driving voltage, generate a charge storage voltage, and discharge and output the first driving voltage according to the charge storage voltage.
At this time, the first switching tube Q1 receives the first driving voltage and the positive power supply voltage, and when the first driving voltage is greater than the gate-source withstand voltage value of the first switching tube Q1, the first switching tube Q1 is switched to the on state to generate the positive power supply branch voltage; the second switching tube Q2 receives the positive power supply branch voltage and the positive power supply voltage, and when the voltage difference between the positive power supply branch voltage and the positive power supply voltage is larger than the gate-source voltage withstand value of the second switching tube Q2, the second switching tube Q2 is switched to a conducting state to conduct the positive power supply output branch so that the positive power supply voltage is output to the positive power supply input end of the laser galvanometer.
In addition, the third switching tube Q3 receives the second driving voltage and the negative power supply voltage, and when the second driving voltage is greater than the gate-source withstand voltage value of the third switching tube Q3, the third switching tube Q3 is switched to the on state to generate the negative power supply branch voltage; the fourth switching tube Q4 receives the negative power supply branch voltage and the negative power supply voltage output by the negative power supply, and when the voltage difference between the negative power supply branch voltage and the negative power supply voltage is larger than the gate-source withstand voltage value of the fourth switching tube Q4, the fourth switching tube Q4 is switched to a conducting state to conduct the negative power supply output branch so that the negative power supply voltage is output to the negative power supply input end of the laser galvanometer.
If the negative power supply is powered on first, the gate-source voltage of the third switching tube Q3 will remain zero, so that it cannot be turned on, and the fourth switching tube Q4 cannot turn on the negative power supply output branch.
According to the driving circuit of the laser galvanometer, the first driving voltage and the second driving voltage which can be generated only by depending on the positive power supply voltage are respectively determined on the positive power supply output branch in the positive power supply control module 40 and the negative power supply output branch in the negative power supply control module 60 so as to control the time of outputting the positive power supply voltage and the negative power supply voltage to the laser galvanometer, the negative power supply output branch can be prevented from being conducted before the positive power supply output branch, the positive power supply voltage and the negative power supply voltage can meet rated values and are synchronously output to the laser galvanometer, the working reliability of the laser galvanometer driver is ensured, the running stability of the laser galvanometer is improved, and the laser processing precision and the safety stability are further improved.
The application also provides a laser galvanometer driving device, which comprises the driving circuit of the laser galvanometer in the embodiment.
The application also provides a laser galvanometer, which comprises the laser galvanometer driving device in any embodiment.
The application also provides processing equipment which comprises the driving circuit of the laser galvanometer in any embodiment. The aforementioned processing device may be a laser processing device.
The above-mentioned division of each module in the driving circuit of the laser galvanometer is only used for illustration, and in other embodiments, the driving circuit of the laser galvanometer may be divided into different modules according to the need, so as to complete all or part of the functions of the driving circuit of the laser galvanometer.
According to the driving circuit of the laser galvanometer and the driving device of the laser galvanometer, the first driving voltage and the second driving voltage which can be generated only by depending on the positive power supply voltage are respectively determined on the positive power supply output branch in the positive power supply control module and the negative power supply output branch in the negative power supply control module so as to control the time of outputting the positive power supply voltage and the negative power supply voltage to the laser galvanometer, the negative power supply output branch can be prevented from being conducted before the positive power supply output branch, the positive power supply voltage and the negative power supply voltage can meet rated values and are synchronously output to the laser galvanometer, the working reliability of the laser galvanometer driver is ensured, the running stability of the laser galvanometer is improved, the laser processing precision and the safety stability are further improved, and the driving circuit has important economic value and popularization and practical value.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (12)
1. A driving circuit of a laser galvanometer, comprising:
the voltage regulation module comprises a positive power supply voltage receiving end, a first driving voltage output end and a second driving voltage output end, wherein the positive power supply voltage receiving end is used for being connected with the output end of a positive power supply;
the positive power supply control module comprises a first driving voltage receiving end, a positive power supply receiving end and a positive power supply output end, wherein the first driving voltage receiving end is connected with the first driving voltage output end, the positive power supply receiving end is used for being connected with the output end of a positive power supply, and the positive power supply output end is used for being connected with the positive power supply input end of the laser galvanometer;
the negative power supply control module comprises a second driving voltage receiving end, a negative power supply receiving end and a negative power supply output end, wherein the second driving voltage receiving end is connected with the second driving voltage output end, the negative power supply receiving end is used for being connected with the output end of the negative power supply, and the negative power supply output end is used for being connected with the negative power supply input end of the laser galvanometer.
2. The drive circuit of claim 1, wherein the voltage regulation module further comprises:
the voltage dividing unit is used for connecting the positive power supply voltage receiving end with the output end of the positive power supply;
the voltage stabilizing unit is connected with the voltage dividing unit and used for outputting a second driving voltage to the second driving voltage output end;
and the charge-discharge unit is connected with the voltage stabilizing unit and is used for receiving the second driving voltage and charging based on the second driving voltage so as to output the first driving voltage to the first driving voltage output end.
3. The driving circuit according to claim 2, wherein the voltage dividing unit includes a first resistor, the voltage stabilizing unit includes a voltage stabilizing diode, a first end of the first resistor is connected to the output terminal of the positive power supply, a second end of the first resistor is connected to the first end of the voltage stabilizing diode, and a second end of the voltage stabilizing diode is grounded.
4. The driving circuit according to claim 2, wherein the charge-discharge unit includes a second resistor and a first capacitor, a first end of the second resistor is connected to the voltage stabilizing unit, a second end of the second resistor is connected to a first end of the first capacitor, and a second end of the first capacitor is grounded.
5. The drive circuit of any one of claims 1 to 4, wherein the positive power control module further comprises:
the first switch unit is connected with a first driving voltage output end of the voltage regulating module through the first driving voltage receiving end and is used for receiving a first driving voltage and outputting a positive power supply branch voltage when the first driving voltage is larger than a first conducting voltage;
the second switch unit is connected with the first switch unit and the positive power supply output end through the positive power supply receiving end, receives the positive power supply branch voltage and the positive power supply voltage, and conducts the positive power supply output branch when the difference value between the positive power supply branch voltage and the positive power supply voltage is larger than a second conducting voltage.
6. The driving circuit according to claim 5, wherein the first switching unit comprises a first switching tube and a third resistor, a first end of the first switching tube is connected with a first driving voltage output end of the voltage regulating module, a second end of the first switching tube is grounded, a third end of the first switching tube is connected with a first end of the third resistor and the second switching unit, respectively, and a second end of the third resistor is connected with an output end of the positive power supply.
7. The driving circuit of claim 5, wherein the second switching unit comprises a second switching tube, the first pin, the second pin and the third pin of the second switching tube are all connected with the output end of the positive power supply through the positive power supply receiving end, the fourth pin of the second switching tube is connected with the first switching unit, and the fifth pin, the sixth pin, the seventh pin and the eighth pin of the second switching tube are all connected with the positive power supply input end of the laser galvanometer.
8. The drive circuit according to any one of claims 1 to 4, wherein the negative power supply control module includes:
the third switch unit is connected with a second driving voltage output end of the voltage regulating module through the second driving voltage receiving end, is used for the second driving voltage and outputs negative power supply branch voltage when the second driving voltage is larger than a third conducting voltage;
and the fourth switch unit is connected with the third switch unit, is connected with the output end of the negative power supply through the negative power supply receiving end, receives the negative power supply branch voltage and the negative power supply voltage, and turns on the negative power supply output branch when the difference value between the negative power supply branch voltage and the negative power supply voltage is larger than a fourth conduction voltage.
9. The driving circuit according to claim 8, wherein the third switching unit comprises a third switching tube, a fourth resistor and a fifth resistor, a first end of the fourth resistor is connected to the second driving voltage output end of the voltage adjusting module, a second end of the fourth resistor is connected to the first end of the third switching tube, a second end of the third switching tube is grounded, a third end of the third switching tube is connected to the first end of the fifth resistor, and a second end of the fifth resistor is connected to the output end of the negative power supply.
10. The driving circuit of claim 8, wherein the fourth switching unit comprises a fourth switching tube, the first pin, the second pin and the third pin of the fourth switching tube are all connected with the output end of the negative power supply through the negative power supply receiving end, the fourth pin of the fourth switching tube is connected with the third switching unit, and the fifth pin, the sixth pin, the seventh pin and the eighth pin of the fourth switching tube are all connected with the negative power supply input end of the laser galvanometer.
11. A laser galvanometer drive apparatus, comprising:
a driving circuit of a laser galvanometer as claimed in any one of claims 1 to 10.
12. A processing apparatus, comprising:
a driving circuit of a laser galvanometer as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321571088.3U CN220312146U (en) | 2023-06-19 | 2023-06-19 | Laser galvanometer driving circuit, laser galvanometer driving device and processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321571088.3U CN220312146U (en) | 2023-06-19 | 2023-06-19 | Laser galvanometer driving circuit, laser galvanometer driving device and processing equipment |
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| CN220312146U true CN220312146U (en) | 2024-01-09 |
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| CN202321571088.3U Active CN220312146U (en) | 2023-06-19 | 2023-06-19 | Laser galvanometer driving circuit, laser galvanometer driving device and processing equipment |
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| CN (1) | CN220312146U (en) |
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2023
- 2023-06-19 CN CN202321571088.3U patent/CN220312146U/en active Active
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