Integrated laser marking machine control circuit structure

Abstract

The application belongs to the technical field of laser marking equipment circuit, and particularly relates to an integrated laser marking machine control circuit structure, which comprises an integrated filter circuit and a marking control card signal interface, an output end of the integrated filter circuit is electrically connected with a reserved alternating current interface and a power module; an output end of the power module is respectively electrically connected with a laser power supply interface, a galvanometer power supply interface and a PCB internal power supply interface; the PCB internal power supply interface is electrically connected with an optocoupler driving module, the original separate filter, power supply, driving and interface modules are all integrated on the PCB, the original complicated wire harness connection is replaced, the external wiring terminals and wire harness are greatly reduced, the equipment structure is simplified, the device is disassembled and integrated, the optocoupler driving module replaces the contactor logic circuit, the large-current relay replaces the original contactor, the overall volume of the circuit is significantly reduced, and the laser marking machine is designed to be small in size.

Description

Technical Field

[0001] This invention relates to the field of laser marking equipment circuit technology, specifically to an integrated laser marking machine control circuit structure. Background Technology

[0002] Laser marking equipment uses a high-energy laser beam to form permanent marks on the surface of materials. Its circuit technology is the core of stable operation and precise control of the equipment.

[0003] The control circuit of existing laser marking machines is usually composed of multiple discrete functional modules such as main control module, laser drive module, power supply module, communication interface module, and input / output module. The modules are externally connected through wires, terminals, and wire harnesses.

[0004] Currently, the discrete structure in existing technologies still has many drawbacks. First, the wiring harness connection is complicated, which is prone to problems such as poor contact and signal interference, affecting the stability of the equipment. Second, the equipment is large in size, which is not conducive to miniaturization design. Third, the modular separation makes maintenance difficult, requiring inspection of multiple modules and connecting lines during maintenance. Fourth, the original circuit uses a logic structure of contactors and optocouplers, which is large in size and has low integration, further limiting the miniaturization of the equipment. Therefore, an integrated control circuit structure for laser marking machines is designed to solve the problems of affecting equipment stability, being unfavorable for miniaturization design, the difficulty of maintenance due to modular separation, and the large size and low integration. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated control circuit structure for a laser marking machine, so as to solve the problems mentioned in the background art that affect the stability of the equipment, are not conducive to miniaturization design, have high maintenance difficulty due to module separation, and have large size and low integration.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an integrated laser marking machine control circuit structure, including an integrated filter circuit and a marking control card signal interface.

[0007] The output of the integrated filter circuit is electrically connected to a reserved AC interface and a power module.

[0008] The output terminals of the power module are electrically connected to the laser power supply interface, the galvanometer power supply interface, and the PCB board power supply interface, respectively.

[0009] The power supply interface inside the PCB board is electrically connected to an optocoupler driver module.

[0010] The output terminals of the optocoupler drive module are electrically connected to the linkage signal interface and the alarm light interface, respectively.

[0011] The output terminal of the marking control card signal interface is electrically connected to the optocoupler drive module.

[0012] All the circuit modules and devices described above are integrated on the same PCB board, and the original wires, terminals and wire harnesses between discrete modules are replaced by traces inside the PCB board.

[0013] The present invention further explains that the AC input terminal is electrically connected to the integrated filter circuit, which disassembles the internal components such as capacitors, inductors, and resistors of the filter and lays them out on the PCB board. The reserved AC interface is used to connect an external additional AC load.

[0014] The present invention further explains that the power module receives AC power filtered by an integrated filter circuit and inputs it to the laser power supply interface, the galvanometer power supply interface, and the PCB board power supply interface, respectively.

[0015] The present invention further explains that the laser power supply interface provides working power to the laser load, and the galvanometer power supply interface provides driving power to the galvanometer module.

[0016] The present invention further explains that the optocoupler driving module internally incorporates a contactor and optocoupler combination logic circuit, which are part of the laser marking machine control circuit.

[0017] The present invention further explains that the marking control card signal interface is used to receive control signals from the marking control card, the linkage signal interface is used to connect external linkage equipment, and the alarm light interface is used to connect an external alarm light.

[0018] The present invention further explains that the output terminal of the laser power supply interface of the power module is used to connect to the laser output relay to realize the on / off control of the laser output.

[0019] The present invention further explains that the laser power supply interface of the power supply module outputs a current power supply adapted to the laser load, the galvanometer power supply interface outputs a driving power supply adapted to the galvanometer module, and the power supply interface inside the PCB board outputs low-voltage power supplies such as 5V / 24V.

[0020] The present invention further explains that the connection between the optocoupler driving module and the power supply interface inside the PCB board utilizes optocouplers to achieve isolated transmission of control signals.

[0021] The present invention further illustrates that the power supply interface inside the PCB board is powered by the optocoupler driver module and is equipped with electromagnetic isolation.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention,

[0023] (1) By integrating all the original separate filtering, power supply, drive, interface and other modules onto the PCB board, replacing the original complicated wire harness connection, the external wiring terminals and wire harness are greatly reduced, simplifying the equipment structure. Furthermore, by disassembling and integrating components, replacing the contactor logic circuit with an optocoupler drive module, and replacing the original contactor with a high-current relay, the overall size of the circuit is significantly reduced, which helps to miniaturize the laser marking machine design.

[0024] (2) By replacing wire harness connection with traces inside the PCB board, problems such as poor contact and signal interference are reduced. At the same time, the optocoupler isolation design improves the stability of signal transmission and extends the service life of the equipment. The integrated structure facilitates fault diagnosis and repair, eliminating the need to check discrete modules and wire harnesses one by one, thus reducing maintenance costs. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a circuit diagram of an integrated laser marking machine control circuit structure according to an embodiment of the present invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] refer to Figure 1 This invention provides an integrated laser marking machine control circuit structure, including an integrated filter circuit and a marking control card signal interface.

[0028] The output of the integrated filter circuit is electrically connected to a reserved AC interface and a power module;

[0029] The output terminals of the power module are electrically connected to the laser power supply interface, the galvanometer power supply interface, and the power supply interface inside the PCB board, respectively.

[0030] The power supply interface inside the PCB is electrically connected to an optocoupler driver module.

[0031] The output terminals of the optocoupler driver module are electrically connected to the linkage signal interface and the alarm light interface, respectively.

[0032] The output terminal of the marking control card signal interface is electrically connected to the optocoupler drive module;

[0033] All the above circuit modules and components are integrated on the same PCB board, and the original wires, terminals and wire harnesses between discrete modules are replaced by traces inside the PCB board.

[0034] The AC input terminal is electrically connected to the integrated filter circuit. The integrated filter circuit disassembles the internal capacitors, inductors, resistors, and other components of the filter and lays them out on the PCB board, with a reserved AC interface for connecting external AC loads. The power module receives the AC power filtered by the integrated filter circuit and supplies it to the laser power supply interface, the galvanometer power supply interface, and the PCB board power supply interface. The laser power supply interface provides a suitable high-current operating power for the laser load, the galvanometer power supply interface provides a suitable precise drive power for the galvanometer module, and the PCB board power supply interface provides low-voltage operating power such as 5V / 24V for the on-board optocoupler drive module and other circuits. Electromagnetic isolation is provided between the power supplies to avoid mutual interference.

[0035] The laser power supply interface of the power module is connected to a laser output relay. This high-current relay replaces the original contactor to control the laser output, simplifying the circuit structure and reducing its size. The marking control card signal interface receives control signals from the marking control card and transmits them to the optocoupler drive module. The optocoupler drive module replaces the contactor and optocoupler combination logic circuit in the original laser marking machine control circuit. It achieves isolated transmission of control signals through optocouplers, and the circuit logic is completely equivalent to the original logic. Furthermore, it connects to the power supply interface on the PCB board via internal traces, significantly reducing the overall size of the circuitry. The control signals processed by the optocoupler drive module are then transmitted to the linkage signal interface and the alarm light interface. The linkage signal interface is used to connect external linkage equipment, and the alarm light interface is used to connect external alarm lights, meeting the equipment's linkage control and status warning requirements.

[0036] In actual operation, external AC power is input to the integrated filter circuit from the AC input terminal. After filtering, the power is sent to the power module, which is divided into three paths to power the laser, galvanometer, and internal circuitry. The control signals output from the marking control card are sent to the optocoupler drive module via the marking control card signal interface. After isolation and transmission, the signals are output to the linkage signal interface, alarm light interface, and laser output relay to complete the corresponding marking control actions. This integrated design significantly reduces the risk of poor contact and signal interference caused by complex external wiring, improves the stability of equipment operation, and makes fault diagnosis and maintenance more convenient, effectively reducing the difficulty and cost of equipment maintenance.

[0037] Furthermore, the AC input terminal is electrically connected to an integrated filter circuit. This integrated filter circuit disassembles the internal capacitors, inductors, resistors, and other components and lays them out on the PCB board, reserving an AC interface for connecting external AC loads. The power module receives the AC power filtered by the integrated filter circuit and inputs it to the laser power supply interface, the galvanometer power supply interface, and the PCB board power supply interface. The laser power supply interface provides operating power to the laser load, and the galvanometer power supply interface provides driving power to the galvanometer module. The optocoupler drive module internally incorporates a contactor and optocoupler combination logic circuit from the laser marking machine control circuit. The marking control card signal interface is used to receive... The marking control card's control signals and linkage signal interface are used to connect external linkage equipment, and the alarm light interface is used to connect external alarm lights. The output end of the laser power supply interface of the power module is used to connect to the laser output relay to realize the on / off control of the laser output. The laser power supply interface of the power module outputs current power adapted to the laser load, the galvanometer power supply interface outputs drive power adapted to the galvanometer module, and the PCB board internal power supply interface outputs low-voltage power such as 5V / 24V. The connection between the optocoupler drive module and the PCB board internal power supply interface uses optocouplers to achieve isolated transmission of control signals. The PCB board internal power supply interface supplies power to the optocoupler drive module and is equipped with electromagnetic isolation.

[0038] After AC power is connected to the AC input terminal, the integrated filter circuit on the PCB board filters out noise interference from the mains input and outputs stable AC power to the power module. An AC interface is also provided for connecting external AC loads as needed, eliminating the need for additional filtering circuitry. The power module receives the filtered AC power and outputs power to the laser power supply interface, galvanometer power supply interface, and PCB board power supply interface according to their specifications. The laser power supply interface outputs a high-current power supply adapted to the laser load, which powers the laser via a high-current laser output relay, enabling laser output on / off control. The galvanometer power supply interface outputs a precise drive power supply adapted to the galvanometer module, powering the galvanometer module. The PCB board power supply interface outputs a 5V / 24V low-voltage power supply to the optocoupler driver module and is equipped with electromagnetic isolation to prevent signal interference between different loads. During marking operations, the marking control card transmits control signals to the optocoupler drive module via its signal interface. The optocoupler drive module uses optocouplers to isolate and transmit the control signals, outputting one signal to the linkage signal interface to control external linkage equipment for synchronous operation, and another signal to the alarm light interface. When an equipment malfunctions, the alarm light is triggered, simultaneously controlling the laser output relay to switch the laser output on and off, achieving stable marking control. The entire circuit requires no additional external wiring harness connection modules, eliminating the risks of poor wiring harness contact and signal interference. It also significantly reduces the overall circuit size, requiring only inspection of a single PCB board during maintenance, lowering maintenance difficulty and meeting the design requirements of miniaturization and high stability for laser marking machines.

[0039] Working Principle: Existing discrete structures still have many drawbacks: firstly, complex wiring connections easily lead to poor contact and signal interference, affecting equipment stability; secondly, the equipment is bulky, hindering miniaturization; thirdly, modular design makes maintenance difficult, requiring troubleshooting of multiple modules and connections; and fourthly, the original circuit uses a contactor-optical coupler logic structure, resulting in large size and low integration, further limiting miniaturization. In this new technology, all functional modules and components are integrated onto a single PCB board. Internal PCB traces replace external wires, terminals, and wiring harnesses between discrete modules. This reduces complex external wiring, avoids poor contact and signal interference caused by wiring harnesses, and improves equipment stability. Furthermore, the integrated layout significantly reduces the overall circuit size, freeing up space for miniaturized laser marking machine design. Meanwhile, the integrated filter circuit disassembles the capacitors, inductors, and resistors of the original discrete filter and directly lays them on the PCB board, further reducing the circuit space while achieving the filtering function. The optocoupler drive module directly replaces the original bulky contactor and optocoupler combination logic circuit, further reducing the on-board circuit size while maintaining the original logic function and signal isolation transmission effect. The high-current laser output relay connected to the laser power supply interface of the power module directly replaces the original bulky contactor to achieve laser on / off control, further simplifying the circuit structure. Finally, the integrated single PCB board design also reduces the difficulty of equipment maintenance. During maintenance, only the single circuit board needs to be checked, without having to check multiple discrete modules and connecting lines one by one, effectively reducing maintenance costs and meeting the design requirements of laser marking equipment for stability, integration, and miniaturization.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated laser marking machine control circuit structure, comprising an integrated filter circuit and a marking control card signal interface, characterized in that: The output of the integrated filter circuit is electrically connected to a reserved AC interface and a power module. The output terminals of the power module are electrically connected to the laser power supply interface, the galvanometer power supply interface, and the PCB board power supply interface, respectively. The power supply interface inside the PCB board is electrically connected to an optocoupler driver module. The output terminals of the optocoupler drive module are electrically connected to the linkage signal interface and the alarm light interface, respectively. The output terminal of the marking control card signal interface is electrically connected to the optocoupler drive module. All the circuit modules and devices described above are integrated on the same PCB board, and the original wires, terminals and wire harnesses between discrete modules are replaced by traces inside the PCB board.

2. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The AC input terminal is electrically connected to the integrated filter circuit, which disassembles the internal components such as capacitors, inductors, and resistors and lays them out on the PCB board. The reserved AC interface is used to connect an external AC load.

3. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The power module receives AC power filtered by the integrated filter circuit and inputs it to the laser power supply interface, the galvanometer power supply interface, and the PCB board power supply interface, respectively.

4. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The laser power supply interface provides operating power to the laser load, and the galvanometer power supply interface provides driving power to the galvanometer module.

5. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The optocoupler drive module internally incorporates a contactor and optocoupler combination logic circuit, which are part of the laser marking machine control circuit.

6. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The marking control card signal interface is used to receive control signals from the marking control card, the linkage signal interface is used to connect external linkage equipment, and the alarm light interface is used to connect an external alarm light.

7. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The output terminal of the laser power supply interface of the power module is used to connect to the laser output relay to realize the on / off control of laser output.

8. The integrated laser marking machine control circuit structure according to claim 2, characterized in that: The power supply module's laser power supply interface outputs a current power supply adapted to the laser load, the galvanometer power supply interface outputs a drive power supply adapted to the galvanometer module, and the PCB board internal power supply interface outputs low-voltage power supplies such as 5V / 24V.

9. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The connection between the optocoupler drive module and the power supply interface inside the PCB board utilizes optocouplers to achieve isolated transmission of control signals.

10. The integrated laser marking machine control circuit structure according to claim 1, characterized in that: The power supply interface inside the PCB board powers the optocoupler driver module and is equipped with electromagnetic isolation.

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