Drive circuit and laser machine tool

Abstract

This disclosure provides a driving circuit and a laser machine tool, including: a power supply unit, the input terminal of which is coupled to an external power source; and a control unit, which includes a power supply terminal, a communication terminal, a first control output terminal, and a second control output terminal. The power supply terminal is coupled to the output terminal of the power supply unit; the communication terminal is coupled to an external control unit; the first control output terminal and the second control output terminal are respectively coupled to a first laser and a second laser; the first laser and the second laser are used to emit lasers of different wavelengths; wherein, the control unit is configured to control the first laser and the second laser to output sufficient optical power through the first control output terminal and the second control output terminal respectively, according to control signals. By setting multiple control output terminals in the control unit, different types of lasers can be connected and independently controlled, thereby achieving unified and coordinated control of lasers of multiple wavelengths.

Description

Technical Field

[0001] This disclosure relates to the field of laser technology, and in particular to drive circuits and laser machine tools. Background Technology

[0002] Background Technology: In modern manufacturing, laser processing technology, with its high efficiency, precision, and non-contact characteristics, has been widely used in industries such as welding and cutting. However, when facing the processing challenges of specific materials such as highly reflective (highly reflective) metals, the application of traditional infrared lasers has encountered significant bottlenecks. Because these highly reflective materials have extremely low infrared laser absorption in their unmelted state, a large amount of laser light is reflected back, forming strong backlight. This not only reduces processing efficiency but may also damage the laser itself. To solve this problem, blue lasers have become an ideal solution because they produce almost no backlight when processing highly reflective materials. However, the high cost of blue lasers limits their widespread adoption; users often can only afford lower-power products, thus affecting processing speed, extending the processing time for a single sheet, reducing production efficiency, and prolonging the cost recovery period. Based on the application characteristics of the two types of lasers—namely, the economic efficiency of infrared lasers and the high efficiency of blue lasers—an innovative laser processing machine tool solution has emerged in the market: integrating two different types of lasers on the same machine tool to fully leverage their respective advantages. This dual-laser system aims to combine the cost-effectiveness of infrared lasers with the high processing power of blue lasers, providing a more flexible and efficient processing solution. However, implementing such a multi-laser system faces certain technical challenges. Because these two types of lasers are typically supplied by different manufacturers, and their electrical control interfaces and control information formats differ, customers need to install two separate control boards to manage each type of laser. This not only increases the user's procurement costs but also enlarges the overall machine size and increases operational complexity. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide a drive circuit and a laser machine tool to solve the problems in the related art.

[0004] The first aspect of this disclosure provides a driving circuit, which is applied to a laser machine tool, wherein the laser machine tool integrates multiple lasers; the driving circuit includes:

[0005] A power supply unit, wherein the input terminal of the power supply unit is coupled to an external power source;

[0006] The control unit includes a power supply terminal, a communication terminal, a first control output terminal, and a second control output terminal.

[0007] The power supply terminal is coupled to the output terminal of the power supply unit;

[0008] The communication terminal is coupled to an external control unit; the external control unit is used to output control signals to control the light output of the laser.

[0009] The first control output terminal and the second control output terminal are respectively coupled to the first laser and the second laser; the first laser and the second laser are respectively used to emit lasers of different wavelengths;

[0010] The control unit is configured to select and control the first laser and / or the second laser to perform a light-emitting action corresponding to the control signal through the first control output terminal and the second control output terminal, respectively.

[0011] In an embodiment of the first aspect, the control signal includes light emission parameters, which include: laser port light emission timing, light emission time, and light emission power.

[0012] In the embodiments of the first aspect, it further includes:

[0013] A first driving unit, wherein the input terminal of the first driving unit is coupled to the first control output terminal, the output terminal of the first driving unit is coupled to the first laser, and the first driving unit outputs a first driving current to the first laser according to the control signal;

[0014] The second driving unit has its input terminal coupled to the second control output terminal and its output terminal coupled to the second laser. The second driving unit outputs a second driving current to the second laser according to the control signal.

[0015] In an embodiment of the first aspect, the first driving unit and the second driving unit include a current regulation circuit, wherein the current regulation circuit outputs a driving current whose amplitude satisfies the light output power among the light output parameters included in the control signal.

[0016] In a first aspect embodiment, the power supply unit includes:

[0017] Input module, the input module being coupled to the external power supply;

[0018] A first conversion module, the input terminal of which is coupled to the output terminal of the input module, and the output terminal of which is coupled to the control unit, converts the external power supply into the DC voltage required by the control unit.

[0019] In an embodiment of the first aspect, the external power source includes an AC power source, and the first conversion module is configured to convert the AC power into DC power required by the control unit.

[0020] In an embodiment of the first aspect, the external power source includes a DC power source, and the first conversion module is configured to convert the input voltage of the DC power source into a DC voltage required by the control unit.

[0021] In an embodiment of the first aspect, the laser wavelength emitted by the first laser is greater than that emitted by the second laser.

[0022] In an embodiment of the first aspect, the laser emitted by the first laser includes an infrared laser; the laser emitted by the second laser includes at least one of a blue laser, a green laser, and an ultraviolet laser.

[0023] In an embodiment of the first aspect, the laser emitted by the first laser includes an infrared laser of a first wavelength; the laser emitted by the second laser includes an infrared laser of a second wavelength; wherein the first wavelength is greater than the second wavelength.

[0024] A second aspect of this disclosure provides a laser machine tool, comprising:

[0025] The driving circuit described in any of the above items;

[0026] Multiple lasers coupled to the driving circuit.

[0027] In an embodiment of the second aspect, the plurality of lasers include pump sources for emitting different wavelengths.

[0028] The beneficial effects of this disclosure are: by setting multiple control output terminals in the control unit, different types of lasers can be connected and controlled independently, thereby achieving unified and coordinated control of lasers of multiple wavelengths. Attached Figure Description

[0029] Figure 1 A schematic diagram of the overall structure of the drive circuit in one embodiment of this disclosure is shown.

[0030] Figure 2 A schematic diagram of the drive circuit is shown in yet another embodiment of this disclosure.

[0031] Figure 3 A schematic diagram of the power supply unit in one embodiment of this disclosure is shown. Detailed Implementation

[0032] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0033] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0034] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0035] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0036] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0037] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0038] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of features, steps, operations, elements, modules, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0039] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0040] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0041] In the field of laser processing, it's impossible to use only one type of laser for a single operation, primarily because different materials have varying laser absorption characteristics. For highly reflective materials, ordinary infrared lasers have extremely low absorption rates before the material melts, resulting in a significant amount of laser energy being reflected. This not only hinders effective material processing but also produces strong backlighting, potentially even burning out the laser. Blue lasers, on the other hand, produce virtually no backlighting when cutting highly reflective materials, enabling highly efficient processing. Furthermore, different processing scenarios have varying requirements for laser power and processing speed. While blue lasers are suitable for highly reflective materials, their high price often forces customers to choose low-power products, leading to slow processing speeds and difficulty in meeting all processing needs. Using only infrared lasers presents processing challenges with highly reflective materials; using only blue lasers, however, is hampered by cost and power limitations, impacting processing efficiency and economic benefits. Therefore, a single laser cannot meet diverse material processing needs; a reasonable combination of different laser types is necessary based on material characteristics and processing requirements.

[0042] Therefore, in order to solve the above problems, the use of multiple lasers (such as infrared lasers and blue lasers) from different manufacturers in related technologies has significant drawbacks. Due to the lack of a unified laser control standard, each manufacturer operates independently on electrical connectors and control protocols, requiring users to install two sets of boards to control different lasers. This not only increases procurement costs and overall machine size but also raises operational difficulty, training costs, and the risk of operational errors due to the complex dual-board control system. Meanwhile, low-wavelength products such as blue lasers are expensive due to high technical barriers, small production scale, and high prices, forcing customers to choose low-power products, resulting in slow processing speeds, low production efficiency, and long cost recovery periods.

[0043] To address the aforementioned issues, one embodiment of this disclosure provides a driving circuit applied to a laser machine tool integrating multiple lasers. The control unit receives external control signals via a communication terminal and controls lasers of different wavelengths through first and second control output terminals. This enables a single driving circuit to coordinate the operation of multiple lasers, effectively reducing procurement costs, minimizing overall machine size, and simplifying operation. Furthermore, this driving circuit can flexibly adjust the output power of different lasers according to processing requirements. It leverages the advantages of blue lasers in high-reflectivity material cutting and utilizes infrared lasers in other processes, significantly improving processing efficiency and production effectiveness, and shortening the cost recovery period.

[0044] exist Figure 1 In this embodiment, the driving circuit includes: a power supply unit 100, a control unit 200, a first laser 410, and a second laser 420.

[0045] The input terminal of the power supply unit 100 is coupled to an external power source. Optionally, the external power source includes AC mains power, i.e., AC 220V or 380V industrial standard voltage. Of course, other forms of stable DC or AC power sources can also be selected according to the actual application scenario. The power supply unit 100 is used to convert the electrical energy provided by the external power source into a voltage or current form suitable for the operation of the drive circuit and the connected laser, and to provide stable and reliable power support for the entire system.

[0046] The control unit 200 includes 210, a communication terminal 220, a first control output terminal 230, and a second control output terminal 240;

[0047] The 210 is connected to the output terminal of the power supply unit 100 to ensure that the control unit 200 receives the electrical energy required for continuous operation.

[0048] The communication terminal 220 is coupled to an external control unit 300. The external control unit 300 is used to output control signals to control the laser's output. Optionally, the output parameters play an important role in the laser processing process. These parameters include key parameters such as output time, port output timing, and output power, which determine the laser's working state and processing effect. Output time controls the on / off timing of the corresponding laser, ensuring that laser energy acts on the workpiece at the appropriate time to avoid over-processing or under-processing. Port output timing coordinates the collaborative work between multiple lasers, especially in multi-wavelength laser systems, involving when each laser turns on, off, and for what duration. For example, after receiving the control signal, the control unit 200, based on the port output timing in the control signal, activates the corresponding first control output terminal 230 or second control output terminal 240. Output power determines the energy output of the laser, affecting the material's absorption efficiency, melting depth, and processing speed; it is a core parameter for matching different material properties and process requirements. By setting and adjusting the output parameters, not only can processing accuracy and efficiency be improved, but the risk of laser damage caused by backlighting or excessive power can also be effectively prevented, extending the service life of the equipment and enhancing the stability, safety and adaptability of the overall system.

[0049] Optionally, before processing, the external control unit (such as a microcontroller, PLC, etc.) will encode parameters such as the light emission sequence (e.g., first activate the blue laser and then activate the infrared laser), light emission time, and light emission power into control signals (such as digital electrical signals, PWM pulses, etc.) according to the process requirements, and transmit them to the control unit through a communication terminal (such as USB, serial port, Ethernet).

[0050] The first control output terminal 230 and the second control output terminal 240 are respectively coupled to the first laser 410 and the second laser 420; the first laser 410 and the second laser 420 are respectively used to emit lasers of different wavelengths;

[0051] The control unit 200 is configured to select and control the first laser 410 and / or the second laser 420 to perform light emission actions corresponding to the control signal through the first control output terminal 230 and the second control output terminal 240, respectively.

[0052] Specifically, depending on the application scenario, the external control unit 300 sends different control signals. The control unit 200 selects to activate the corresponding control output port based on the control signal and adjusts the output current to achieve closed-loop control of the laser output power. For example, when processing high-reflectivity materials, the control unit 200 can prioritize activating the control output port connected to the laser with a lower wavelength and adjust its output power to the optimal processing value based on the control signal; conversely, in the processing of non-high-reflectivity materials, the opposite is true.

[0053] The reason for separately activating the first and second control output terminals is that different wavelengths of laser light each possess unique advantages in material processing. These differences primarily stem from the absorption characteristics of materials for specific wavelengths of light. By rationally selecting and combining lasers of different wavelengths, the processing procedure can be optimized according to specific application requirements. This not only improves processing quality and efficiency but also expands the application scope of laser technology, enabling it to play a vital role in more industries and scenarios. This flexibility and adaptability are unmatched by single-wavelength lasers.

[0054] Optionally, the laser wavelength emitted by the first laser 410 is greater than that emitted by the second laser 420; the laser emitted by the first laser 410 includes infrared laser; the laser emitted by the second laser 420 includes at least one of blue laser, green laser and ultraviolet laser.

[0055] Specifically, the first laser 410 can be configured to emit infrared laser light, which, due to its longer wavelength, performs exceptionally well when processing non-highly reflective metallic materials. Infrared lasers offer high energy density, enabling rapid cutting and welding operations, and are particularly suitable for applications requiring deep melting of materials. It has wide applications in industry, especially in large-scale metal processing, where its cost-effectiveness and technological maturity make it a preferred choice for many manufacturers.

[0056] On the other hand, the second laser 420 can selectively emit blue, green, or ultraviolet lasers, depending on the specific processing requirements and material properties. These shorter wavelength lasers exhibit unique advantages when processing specific materials. For example, blue lasers are well-suited for efficient processing of highly reflective materials such as copper and aluminum due to their higher absorption rate, while also reducing the potential damage to equipment from reflected light. Green and ultraviolet lasers are better suited for fine processing tasks such as semiconductor wafer dicing, microelectronic component manufacturing, and internal engraving of transparent materials, as they can achieve extremely high resolution and precision without damaging the surrounding structure.

[0057] In some embodiments, the first laser 410 is configured to emit mid-infrared laser light with a first wavelength, while the second laser 420 is configured to emit near-infrared laser light with a second wavelength, wherein the first wavelength (mid-infrared) is numerically greater than the second wavelength (near-infrared). Specifically, the first laser 410 can emit mid-infrared laser light with wavelengths of 4.6 micrometers or 9.3 micrometers. These wavelengths are suitable for processing plastics, composite materials, and certain organic compounds because their longer wavelengths can produce stronger selective absorption in these materials, making them suitable for applications such as precision cutting and chemical analysis. The second laser 420 emits near-infrared laser light with wavelengths of 1064 nanometers or 1550 nanometers. This wavelength is suitable for efficient processing of metal materials, fiber optic communication, and high-precision surgical procedures in the medical field due to its higher energy density and shallower penetration depth. By combining these two lasers with different wavelengths, the system can achieve optimal energy utilization efficiency and processing effects in a variety of application scenarios, meeting diverse application needs.

[0058] As an example, for highly reflective metals such as copper and aluminum, which have low absorption rates to infrared lasers and are prone to backlighting, a second laser 420 (such as a blue laser) is used first. Blue lasers have higher surface absorption efficiency, enabling rapid heating and melting of materials without generating excessive backlighting. For non-highly reflective materials such as ordinary steel, the first laser 410 (such as an infrared laser) can be relied upon primarily because it is more cost-effective and suitable for high-power operation, enabling rapid cutting or welding tasks.

[0059] As an example, in some applications, a second laser 420 (such as an ultraviolet laser) can be used to perform fine pretreatment on the material, such as marking or micro-cutting, to reduce the heat-affected zone and prepare for subsequent large-area processing. Then, the first laser 410 (such as an infrared laser) can be used for efficient main processing, such as large-area cutting or welding, thus ensuring processing accuracy and improving overall efficiency.

[0060] The control unit 200 monitors various parameters (such as temperature and melting rate) in real time during the processing based on the light output parameters contained in the control signals sent by the external control unit 300, and adjusts the output power of the first laser 410 and the second laser 420 through the first control output terminal 230 and the second control output terminal 240, respectively. For example, in transition areas or at the junction of materials of different thicknesses, it may be necessary to use the two lasers alternately and continuously optimize their respective power settings to ensure seamless connection and smooth transition.

[0061] Optionally, in Figure 2 In this embodiment, the driving circuit further includes a first driving unit 510 and a second driving unit 520.

[0062] The input terminal of the first driving unit 510 is coupled to the first control output terminal 230, and the output terminal of the first driving unit 510 is coupled to the first laser 410. The first driving unit 510 outputs a first driving current to the first laser 410 according to the control signal.

[0063] The input terminal of the second driving unit 520 is coupled to the second control output terminal 240, and the output terminal of the second driving unit 520 is coupled to the second laser 420. The second driving unit 520 outputs a second driving current to the second laser 420 according to the control signal.

[0064] Specifically, in laser processing systems, directly connecting the control output of the control chip to the first laser 410 and the second laser 420 presents several limitations. First, different types of lasers have significantly different current and voltage requirements, while the control chip typically only provides low-current signals, insufficient to meet the laser's operational needs. The drive unit amplifies these signals and provides the laser with the required high current and appropriate voltage, ensuring its normal operation. Second, direct connection can damage the control chip due to overcurrent or overvoltage; using a drive unit effectively isolates high-voltage, high-current loads, protecting sensitive electronic components. Furthermore, the drive unit improves the accuracy and response speed of energy regulation by precisely controlling the current supplied to the laser, contributing to higher-quality processing results. Finally, the various protection mechanisms (such as overheat and short-circuit protection) equipped in the drive unit enhance operational safety, ensuring the safety of equipment and personnel. Therefore, employing a dedicated drive unit to manage and optimize laser operation is crucial for improving the performance, reliability, and safety of the entire laser processing system.

[0065] Optionally, the first driving unit 510 and the second driving unit 520 include a current regulation circuit, wherein the output amplitude of the current regulation circuit satisfies the driving current of the light output power in the light output parameters included in the control signal.

[0066] Specifically, the drive current is crucial to the laser's performance. It serves as the electrical energy input to the laser, enabling the generation of a stable laser output. The drive current directly determines the laser's output power; generally, as the current increases, the output power also increases. Every laser has a threshold current; only when the drive current exceeds this threshold can the laser begin to generate an effective laser beam. An appropriate drive current not only ensures the laser's effective operation but also significantly impacts its long-term stability and lifespan. Excessively high current can lead to overheating and material damage, shortening its lifespan, while excessively low current can result in unstable performance or an inability to achieve the required output power.

[0067] Optionally, in Figure 3 In this embodiment, the power supply unit 100 includes an input module 110 and a first conversion module 120.

[0068] The input module 110 is coupled to an external AC power source to receive AC power, such as mains power, and performs preliminary processing, such as filtering or rectification, to improve power quality and ensure system safety. The input terminal of the first conversion module 120 is connected to the output terminal of the input module 110, and its output terminal is coupled to the control unit 200. It converts the external power source into the DC voltage required by the control unit 200, such as a standard voltage like +5V or +12V, to ensure stable and reliable operation of the control unit 200.

[0069] In some embodiments, the external power source can be an AC power source or a DC power source, and the first conversion module performs the corresponding voltage conversion function according to the different types of external power sources to meet the DC voltage required by the control unit.

[0070] As an example, when the external power supply is AC, the first conversion module first converts the AC power into a pulsating DC voltage through a rectifier circuit, then uses a filter element to smooth the voltage, and uses a voltage regulator circuit to ensure a stable DC voltage output for the control unit.

[0071] As an example, when the external power supply is DC, the first conversion module adjusts the input voltage to a suitable level for the control unit's operation via a DC-DC converter (such as a buck or boost converter), and ensures the stability of the output voltage through voltage regulation. Regardless of whether the external power supply is AC or DC, the first conversion module can perform voltage conversion and regulation to ensure that the control unit receives a stable and reliable DC power supply, thereby enhancing the system's applicability and reliability.

[0072] In another embodiment of this disclosure, a laser machine tool is provided, comprising:

[0073] The driving circuit described in any of the above embodiments;

[0074] Multiple lasers coupled to the driving circuit.

[0075] The drive circuit provides a stable power supply to each laser and independently controls the operating state of each laser according to external control signals, enabling coordinated operation of multiple lasers. The multiple lasers are preferably light sources emitting lasers of different wavelengths, such as infrared lasers, blue lasers, green lasers, or ultraviolet lasers, and may also include pump sources for optical amplification or other functions. By flexibly configuring combinations of lasers of different wavelengths, this laser machine tool can adapt to the needs of various materials (such as metals, glass, plastics, semiconductors, etc.) and different processing techniques (such as cutting, welding, marking, micromachining, etc.), significantly improving processing efficiency, flexibility, and applicability.

[0076] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A driving circuit, characterized in that, The laser machine tool is used in laser machine tools, which integrate multiple lasers; the driving circuit includes: A power supply unit, wherein the input terminal of the power supply unit is coupled to an external power source; The control unit includes a power supply terminal, a communication terminal, a first control output terminal, and a second control output terminal. The power supply terminal is coupled to the output terminal of the power supply unit; The communication terminal is coupled to an external control unit; the external control unit is used to output control signals to control the light output of the laser. The first control output terminal and the second control output terminal are respectively coupled to the first laser and the second laser; the first laser and the second laser are respectively used to emit lasers of different wavelengths; The control unit is configured to select and control the first laser and / or the second laser to perform a light-emitting action corresponding to the control signal through the first control output terminal and the second control output terminal, respectively.

2. The driving circuit according to claim 1, characterized in that, The control signal includes light output parameters, which include: port light output timing, light output time, and light output power.

3. The driving circuit according to claim 1, characterized in that, Also includes: A first driving unit, wherein the input terminal of the first driving unit is coupled to the first control output terminal, the output terminal of the first driving unit is coupled to the first laser, and the first driving unit outputs a first driving current to the first laser according to the control signal; The second driving unit has its input terminal coupled to the second control output terminal and its output terminal coupled to the second laser. The second driving unit outputs a second driving current to the second laser according to the control signal.

4. The driving circuit according to claim 3, characterized in that, The first driving unit and the second driving unit include a current regulation circuit, and the output amplitude of the current regulation circuit satisfies the driving current of the light output power in the light output parameters included in the control signal.

5. The driving circuit according to claim 1, characterized in that, The power supply unit includes: Input module, the input module being coupled to the external power supply; A first conversion module, the input terminal of which is coupled to the output terminal of the input module, and the output terminal of which is coupled to the control unit, converts the external power supply into the DC voltage required by the control unit.

6. The driving circuit according to claim 5, characterized in that, The external power source includes an AC power source, and the first conversion module is configured to convert the AC power into the DC power required by the control unit.

7. The driving circuit according to claim 5, characterized in that, The external power source includes a DC power source, and the first conversion module is configured to convert the input voltage of the DC power source into the DC voltage required by the control unit.

8. The driving circuit according to claim 1, characterized in that, The laser wavelength emitted by the first laser is greater than that emitted by the second laser.

9. The driving circuit according to claim 1, characterized in that, The laser emitted by the first laser includes infrared laser; the laser emitted by the second laser includes at least one of blue laser, green laser, and ultraviolet laser.

10. The driving circuit according to claim 1, characterized in that, The laser emitted by the first laser includes infrared laser of a first wavelength; the laser emitted by the second laser includes infrared laser of a second wavelength; wherein the first wavelength is greater than the second wavelength.

11. A laser machine tool, characterized in that, include: The driving circuit as described in any one of claims 1-8; Multiple lasers coupled to the driving circuit.

12. The laser machine tool according to claim 11, characterized in that, The plurality of lasers include pump sources for emitting different wavelengths.

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