Laser internal control board

Abstract

The utility model discloses a laser internal control board, which belongs to the technical field of lasers, and can realize accurate control of parameters such as light emitting energy, exhaust frequency and the like of a laser through a PLC (Programmable Logic Controller) and a human-computer interface, and ensure the stability of laser output by the laser and the reliability of cutting quality. Due to the automatic operation process, the operation steps are simplified, the working efficiency is improved, and the labor intensity of operators is reduced. And safety protection measures such as a safety interlocking circuit, an emergency stop button, a state indicating lamp, a fault alarm system and the like are adopted, so that the safety of operators and the stable operation of the laser are ensured. The fault diagnosis function can identify potential faults in advance, quickly position the faults and take corresponding processing measures, so that equipment shutdown caused by the faults is avoided, and the reliability of the laser and the utilization rate of the equipment are improved. And meanwhile, data analysis, fault diagnosis and equipment maintenance are facilitated through data acquisition and recording functions, and data support is provided for optimization and improvement of equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of lasers, in particular to a laser internal control board. Background Art

[0002] Lasers, as essential optical devices, play a vital role in scientific research, healthcare, industry, and other fields. The operating status of lasers directly impacts the performance and reliability of equipment such as laser cutting machines, laser welding machines, and laser medical devices. Therefore, precise control and management of lasers is crucial.

[0003] However, traditional laser control systems typically rely on manual adjustments, which are cumbersome, inefficient, and difficult to achieve high-precision control. Furthermore, traditional control systems lack real-time monitoring and fault diagnosis capabilities for the laser's operating status, making it difficult to ensure stable operation and extend the laser's service life.

[0004] In order to solve the above problems, there is an urgent need for a new type of laser control system that can achieve high-precision laser energy control, automated operation management and reliable safety protection. Utility Model Content

[0005] The purpose of the present utility model is to provide a laser internal control board in order to solve the above-mentioned problems.

[0006] The technical solution adopted by the utility model is as follows: a laser internal control board, which includes: a PLC processor, an HMI interface, a laser power control module, an exhaust control module, a power module, a communication module, a sensor, a relay, a safety interlock circuit, an emergency stop button, a status indicator light, a fault alarm system, and a data acquisition and recording system;

[0007] The PLC processor is responsible for receiving external signals, processing logical operations and outputting control signals. The PLC processor is a MX3G-43C-22MT model PLC and is equipped with corresponding input / output modules.

[0008] The human-machine interface (HMI) is used to interact with the operator, display device status, set parameters, and receive instructions. The HMI interface is connected to the L2, N2, +V, -V, H, L, P, G, and IN5V interfaces.

[0009] The laser power control module controls the laser light output energy according to PLC instructions and needs to support both analog control and pulse control.

[0010] The exhaust control module controls the exhaust solenoid valve according to the PLC instructions, automatically evacuating the mixed gas inside the laser and replenishing new mixed gas regularly.

[0011] In a preferred embodiment, the PLC processor serves as the core of the control system and is responsible for receiving external signals, processing logical operations and outputting control signals.

[0012] The PLC processor is the MX3G-43C-22MT processor

[0013] The PLC processor configures input / output modules according to actual needs;

[0014] The connection end of the PLC processor is provided with:

[0015] Digital input module: used to receive switch signals, including emergency stop button, laser door switch, etc.

[0016] Digital output module: used to control external devices, including solenoid valves, relays, etc.

[0017] Analog input module: used to receive sensor signals, including temperature, pressure, gas concentration, etc.

[0018] Analog output module: used to control the laser power control module, including analog quantity control of laser light output energy.

[0019] Programming: Use PLC programming software to write control programs to realize various functions of the laser cutting machine.

[0020] In a preferred embodiment, the human-machine interface (HMI) is used to interact with the operator, display equipment status, set parameters, and receive instructions. The HMI uses PWMO and DAO interfaces to connect to the PLC. The HMI displays various states of the laser cutting machine, including: laser operating status, exhaust status, fault information, and equipment parameter settings;

[0021] The human-machine interface (HMI) input function can receive instructions from the operator, including: starting / stopping the laser, setting the laser energy, and setting the exhaust frequency.

[0022] In a preferred embodiment, the laser power supply control module controls the laser light energy according to the PLC instruction. The laser power supply control module supports both analog control and pulse control. The laser power supply control module uses a red 4mm 3 、Black 4mm 3 and yellow-green 2.5mm 3 The 3-core cable is connected to the PLC.

[0023] The laser power supply control module can set laser energy and pulse frequency parameters.

[0024] In a preferred embodiment, the exhaust control module controls the exhaust solenoid valve according to PLC instructions, automatically evacuating the mixed gas inside the laser and replenishing it with new mixed gas at regular intervals. The exhaust control module connects to the PLC using an SLQ2.0 interface. The exhaust control module sets parameters such as exhaust frequency and exhaust time.

[0025] In a preferred embodiment, the power module provides a stable and reliable power supply for the entire internal control board. The input voltage of the power module is 220V AC, and the output voltage of the power module is 24V DC.

[0026] The fault alarm system is used to send out an alarm signal when a fault occurs, including: sound and light alarm and message push; the fault alarm system is composed of an alarm and a communication module component.

[0027] In a preferred embodiment, the communication module enables the PLC to communicate with other devices or systems and to exchange data with a host computer; the communication module selects a suitable communication protocol according to actual needs.

[0028] In a preferred embodiment, the sensor is used to detect parameters such as temperature, pressure, and gas concentration inside the laser and transmit the signal to the PLC.

[0029] The sensors include: temperature sensor, pressure sensor, gas sensor

[0030] The sensor is connected to the PLC using an analog input module.

[0031] The status indicator light is used to indicate the operating status, and the status indicator light includes: a laser operation indicator light, a fault indicator light, and an exhaust indicator light; the status indicator light uses a digital output module to connect to the PLC.

[0032] In a preferred embodiment, the relay is used to control external equipment, such as the start and stop of a fly pump. The relay is connected to a PLC using a digital output module.

[0033] The emergency stop button is used to immediately stop the laser operation in an emergency. The emergency stop button is connected to the PLC using a digital input module.

[0034] In a preferred embodiment, the safety interlock circuit is used to ensure operator safety, automatically shutting down the laser power supply when the laser door is opened, and automatically stopping the laser operation when the air pressure is abnormal. The safety interlock circuit is composed of components such as relays and switches.

[0035] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0036] 1. In the present invention, precise control of parameters such as the laser light output energy and exhaust frequency can be achieved through PLC and human-machine interface, ensuring the stability of the laser output and the reliability of the cutting quality. The automated operation process simplifies the operation steps, improves work efficiency, and reduces the labor intensity of operators. Safety protection measures such as the safety interlock circuit, emergency stop button, status indicator light, fault alarm system, etc. ensure the safety of operators and the stable operation of the laser. The fault diagnosis function can identify potential faults in advance, quickly locate faults and take corresponding treatment measures to avoid equipment shutdowns caused by faults, and improve the reliability of the laser and equipment utilization. At the same time, the data acquisition and recording functions facilitate data analysis, fault diagnosis and equipment maintenance, providing data support for equipment optimization and improvement.

[0037] 2. The utility model has the advantages of simple structure, complete functions, and reliable performance. It can realize precise control of the laser, automatic operation management, reliable safety protection and fault diagnosis, effectively improve the cutting quality and efficiency of the laser, reduce production costs, and extend the service life of the laser. It has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is the overall wiring circuit diagram of this application;

[0039] Figure 2 This is the wiring diagram of the Feiyue pump in this application;

[0040] Figure 3 This is the circuit diagram of the laser power supply control part in this application;

[0041] Figure 4 This is the circuit diagram of the PLC processor in this application;

[0042] Figure 5 This is the circuit diagram of the exhaust control part in this application;

[0043] Figure 6 This is the circuit diagram of the exhaust solenoid valve in this application;

[0044] Figure 7 This is the overall system block diagram of this application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] Reference Figure 1-7 ,

[0047] A laser internal control board, which includes: a PLC processor, an HMI interface, a laser power control module, an exhaust control module, a power module, a communication module, sensors, relays, a safety interlock circuit, an emergency stop button, a status indicator light, a fault alarm system, and a data acquisition and recording system;

[0048] The PLC processor is responsible for receiving external signals, processing logical operations, and outputting control signals. The PLC processor is an MX3G-43C-22MT model PLC and is equipped with corresponding input / output modules.

[0049] Human Machine Interface (HMI): Used to interact with operators, display device status, set parameters, and receive instructions. The HMI interface is connected to the L2, N2, +V, -V, H, L, P, G, and IN5V interfaces.

[0050] The laser power control module controls the laser light output energy according to PLC instructions. It needs to support both analog control and pulse control.

[0051] The exhaust control module controls the exhaust solenoid valve according to the PLC instructions, automatically and regularly evacuates the mixed gas inside the laser and replenishes new mixed gas.

[0052] As the core of the control system, the PLC processor is responsible for receiving external signals, processing logical operations and outputting control signals.

[0053] The PLC processor is MX3G-43C-22MT processor

[0054] The PLC processor configures the input / output modules according to actual needs;

[0055] The connection terminals of the PLC processor are:

[0056] Digital input module: used to receive switch signals, including emergency stop button, laser door switch, etc.

[0057] Digital output module: used to control external devices, including solenoid valves, relays, etc.

[0058] Analog input module: used to receive sensor signals, including temperature, pressure, gas concentration, etc.

[0059] Analog output module: used to control the laser power control module, including analog quantity control of laser light output energy.

[0060] Programming: Use PLC programming software to write control programs to realize various functions of the laser cutting machine.

[0061] The human-machine interface (HMI) is used to interact with operators, display equipment status, set parameters, and receive instructions. The HMI uses PWMO and DAO interfaces to connect to the PLC. The HMI displays various states of the laser cutting machine, including: laser operating status, exhaust status, fault information, and equipment parameter settings;

[0062] The human-machine interface (HMI) input function can receive operator instructions, including: starting / stopping the laser, setting laser energy, and setting exhaust frequency.

[0063] The laser power control module controls the laser light energy according to the PLC instructions. The laser power control module supports both analog control and pulse control. The laser power control module uses a red 4mm 3 、Black 4mm 3 and yellow-green 2.5mm 3 The 3-core cable is connected to the PLC.

[0064] The laser power supply control module can set the laser energy and pulse frequency parameters.

[0065] The exhaust control module controls the exhaust solenoid valve according to PLC instructions, automatically evacuating the mixed gas inside the laser and replenishing it with new mixed gas at regular intervals. The exhaust control module connects to the PLC using the SLQ2.0 interface. The exhaust control module sets parameters such as exhaust frequency and exhaust time.

[0066] The power module provides stable and reliable power to the entire internal control board. The input voltage of the power module is 220V AC, and the output voltage of the power module is 24V DC.

[0067] The fault alarm system is used to send out alarm signals when a fault occurs, including: sound and light alarm and message push; the fault alarm system consists of alarm and communication module components

[0068] The communication module enables the PLC to communicate with other devices or systems and exchange data with the host computer; the communication module selects the appropriate communication protocol based on actual needs.

[0069] The sensor is used to detect the temperature, pressure, gas concentration and other parameters inside the laser and transmit the signal to the PLC.

[0070] Sensors include: temperature sensor, pressure sensor, gas sensor

[0071] The sensor is connected to the PLC using an analog input module.

[0072] The status indicator light is used to indicate the operating status. The status indicator lights include: laser operation indicator light, fault indicator light, and exhaust indicator light. The status indicator light uses a digital output module to connect to the PLC.

[0073] Relay: Used to control external devices, such as the start and stop of a fly pump. The relay uses a digital output module to connect to the PLC.

[0074] The emergency stop button is used to stop the laser immediately in an emergency. The emergency stop button uses a digital input module to connect to the PLC

[0075] The safety interlock circuit is used to ensure the safety of the operator. When the laser door is opened, the laser power is automatically turned off. When the air pressure is abnormal, the laser operation is automatically stopped: the safety interlock circuit is composed of relays, switches and other components.

[0076] The beneficial effects of the laser internal control board of this application are mainly reflected in the following aspects:

[0077] 1. High-precision control:

[0078] Laser energy control: PLC can accurately control the laser light energy according to the parameters set by HMI or external control signals, achieving stable output of laser energy, thereby ensuring the consistency and accuracy of cutting quality.

[0079] Exhaust control: PLC can accurately control the switch of the exhaust solenoid valve according to the preset frequency parameters or external control signals, automatically and regularly evacuate the mixed gas inside the laser and replenish new mixed gas, maintain the stability of the internal environment of the laser, and extend the service life of the laser.

[0080] Sensor control: PLC can perform real-time monitoring and control based on the temperature, pressure, gas concentration and other data collected by the sensor to ensure that the laser operates in the best condition.

[0081] 2.Automated operation:

[0082] Easy operation: The human-machine interface (HMI) provides a friendly operation interface, allowing operators to easily set parameters, view equipment status and receive instructions without the need for professional operating skills.

[0083] Automatic operation: PLC can automatically control the operation of the laser according to the preset program without manual intervention, thus improving production efficiency.

[0084] Remote control: Through the network communication module, remote monitoring and control can be achieved, which is convenient for remote debugging and maintenance.

[0085] 3.Safe and reliable:

[0086] Safety interlock: When the laser door is opened or the air pressure is abnormal, the safety interlock circuit will automatically cut off the laser power supply to prevent accidental injury.

[0087] Emergency stop: The emergency stop button can immediately stop the laser operation to ensure the safety of the operator.

[0088] Status indicator: The status indicator can display the operating status of the laser in real time, making it easier for operators to understand the status of the equipment.

[0089] Fault alarm: The fault alarm system will send out an alarm signal when a fault occurs and display the fault information to facilitate the operator to troubleshoot.

[0090] 4. Fault diagnosis:

[0091] Data acquisition: The data collected by the sensor will be transmitted to the PLC in real time for storage and analysis.

[0092] Fault analysis: The PLC has a built-in fault diagnosis algorithm that can identify potential faults based on data analysis results and issue an alarm signal.

[0093] Fault handling: Depending on the fault type and severity, the PLC can automatically take appropriate measures, such as reducing laser energy, stopping laser operation, or starting a backup laser.

[0094] 5. Data collection and recording:

[0095] Data storage: The data collected by the sensor will be stored in the PLC or external storage device to facilitate data analysis and fault diagnosis.

[0096] Data backtracking: historical data can be viewed to analyze the operating trends of the laser, providing data support for equipment optimization and improvement.

[0097] Data analysis: Statistical analysis can be performed on data, such as laser energy distribution, fault frequency, etc., to provide a basis for equipment maintenance.

[0098] The laser internal control board provided in this application effectively improves the cutting quality and efficiency of lasers, reduces production costs, extends the service life of lasers, and enhances the reliability and safety of equipment through high-precision control, automated operation, safety and reliability, fault diagnosis, and data acquisition. This internal control board has broad application prospects and can be applied to various laser processing equipment, such as laser cutting machines, laser welding machines, and laser marking machines.

[0099] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0100] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser internal control board, characterized by: The internal control board includes: PLC processor, human-machine interface, laser power supply control module, exhaust control module, power supply module, communication module, sensor, relay, safety interlock circuit, emergency stop button, status indicator light, fault alarm system, data acquisition and recording system; The PLC processor is responsible for receiving external signals, processing logical operations and outputting control signals; the PLC processor is a PLC of the MX3G-43C-22MT model, and the PLC processor is provided with an input / output module; The interfaces of the human-machine interface are connected with L2, N2, +V, -V, H, L, P, G and IN5V interfaces; The laser power supply control module controls the laser light output energy according to PLC instructions; The exhaust control module controls the exhaust solenoid valve according to PLC instructions.

2. The laser internal control board according to claim 1, characterized in that: The PLC processor is the core of the control system; The PLC processor is the MX3G-43C-22MT processor The connection end of the PLC processor is provided with: Digital input modules, digital output modules, analog input modules, analog output modules and programming modules.

3. The laser internal control board according to claim 1, characterized in that: The human-machine interface uses PWMO and DAO interfaces to connect to the PLC; the human-machine interface displays various states of the laser cutting machine, including: laser operating state, exhaust state, fault information, and equipment parameter settings.

4. The laser internal control board according to claim 1, characterized in that: The laser power supply control module includes two modes: analog control and pulse control; the laser power supply control module uses a red 4mm 3 、Black 4mm 3 and yellow-green 2.5mm 3 The 3-core cable is connected to the PLC processor.

5. The laser internal control board according to claim 1, characterized in that: The exhaust control module is connected to the PLC using the SLQ2.0 interface.

6. The laser internal control board according to claim 1, characterized in that: The input voltage of the power module is 220V, and the output voltage of the power module is 24V. The fault alarm system is composed of an alarm and a communication module.

7. The laser internal control board according to claim 1, characterized in that: The communication module enables the PLC to communicate with other devices or systems and exchange data with the host computer.

8. The laser internal control board according to claim 1, characterized in that: The sensor transmits the signal to the PLC; The sensors include: temperature sensor, pressure sensor, gas sensor The sensor is connected to the PLC using an analog input module; The status indicator lights include: a laser operation indicator light, a fault indicator light, and an exhaust indicator light; the status indicator lights are connected to the PLC using a digital output module.

9. The laser internal control board according to claim 1, characterized in that: The relay is used to control external devices, including the start and stop of the Feiyue pump; the relay uses a digital output module to connect to the PLC; The emergency stop button is used to immediately stop the laser operation in an emergency; the emergency stop button uses a digital input module to connect to the PLC.

10. The laser internal control board according to claim 1, characterized in that: The safety interlock circuit is used to ensure the safety of the operator. When the laser door is opened, the laser power supply is automatically turned off; when the air pressure is abnormal, the laser operation is automatically stopped: the safety interlock circuit is composed of relays and switch elements.

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