Laser cleaning system

Abstract

The utility model discloses a laser cleaning system, which comprises a slave control module of which the first output end is used for outputting an optical signal of a laser switch; the main control module comprises a second output end, and the second output end is used for outputting an enable signal of emergent light of the laser; the AND gate module comprises a first input end, a second input end and a third output end, the first input end is electrically connected with the first output end, and the second input end is electrically connected with the second output end; the laser comprises a third input end, and the third input end is electrically connected with the third output end; when the system completes cleaning of the overlapped tail end breadth, the first output end outputs an optical signal for closing light emitted by the laser so as to enable the third output end to output a control signal; when the system cleans the non-overlapped breadths, the first output end outputs the optical signal for starting the laser to emit light so as to enable the third output end to output the control signal, so that the problem of too deep cleaning of the overlapped tail end breadths is avoided, and the effect of the laser cleaning process is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of laser cleaning, and in particular to a laser cleaning system. Background Art

[0002] Laser cleaning technology refers to the use of high-energy laser beams to irradiate the surface of the workpiece, causing the dirt, rust or coating on the surface to evaporate or peel off instantly, and to quickly and effectively remove the surface attachments or surface coatings on the cleaning object, thereby achieving a clean process.

[0003] In the related art, when laser is used for single-axis cleaning or composite cleaning, Figure 1 The laser cleaning is performed along the cleaning trajectory shown. Since the trajectory of the laser cleaning movement will overlap with the end surface 60 of the cleaning area, the laser will stay at the end surface 60 for a longer time, resulting in deeper burn marks on the end surface 60, which will lead to poor laser cleaning process effect. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present application provides a laser cleaning system, which aims to solve the technical problem of poor laser cleaning process effect in the prior art.

[0005] To solve the above problems, the present application provides a laser cleaning system, which includes:

[0006] A slave control module, comprising a first output end, the slave control module is arranged inside the cleaning head, and the first output end is used to output the optical signal of the laser switch;

[0007] A main control module, comprising a second output terminal, wherein the second output terminal is used to output an enable signal for the laser to emit light;

[0008] An AND gate module, comprising a first input terminal, a second input terminal and a third output terminal, wherein the first input terminal is electrically connected to the first output terminal, and the second input terminal is electrically connected to the second output terminal;

[0009] A laser, comprising a third input terminal, the third input terminal being electrically connected to the third output terminal;

[0010] Among them, when the laser cleaning system completes the cleaning of the overlapping end webs, the first output end outputs an optical signal for turning off the laser light, so that the third output end outputs a control signal for turning off the laser light; when the laser cleaning system cleans the non-overlapping webs, the first output end outputs an optical signal for turning on the laser light, so that the third output end outputs a control signal for turning on the laser light.

[0011] Further, in the laser cleaning system, the system further comprises a first differential module and a second differential module;

[0012] Among them, the first differential module includes a fourth input terminal and a fourth output terminal, and the second differential module includes a fifth input terminal and a fifth output terminal; the fourth input terminal is electrically connected to the first output terminal, the fourth output terminal is electrically connected to the fifth input terminal, and the fifth output terminal is electrically connected to the first input terminal.

[0013] Furthermore, in the laser cleaning system, the first differential module includes a first anti-interference module and a first control chip;

[0014] Wherein, the first control chip includes the fourth input end, the first anti-interference module includes the fourth output end, and the first control chip is electrically connected to the first anti-interference module.

[0015] Furthermore, in the laser cleaning system, the first anti-interference module further includes a first common-mode inductor, a first transient voltage suppression tube, and a second transient voltage suppression tube;

[0016] Wherein, the first common mode inductor includes a first end, a second end, a third end and a fourth end;

[0017] One end of the first transient voltage suppression tube is electrically connected to the first end, the second end is electrically connected to the first control chip, and the other end of the first transient voltage suppression tube is electrically connected to the fourth output end;

[0018] One end of the second transient voltage suppression tube is electrically connected to the third end, the fourth end is electrically connected to the first control chip, and the other end of the second transient voltage suppression tube is electrically connected to the fourth output end.

[0019] Furthermore, in the laser cleaning system, the second differential module includes a second anti-interference module and a second control chip;

[0020] The second control chip includes the fifth output terminal, the second anti-interference module includes the fifth input terminal, and the second control chip is electrically connected to the second anti-interference module.

[0021] Furthermore, in the laser cleaning system, the second anti-interference module further includes a second common-mode inductor, a third transient voltage suppression tube and a fourth transient voltage suppression tube;

[0022] Wherein, the second common mode inductor includes a fifth end, a sixth end, a seventh end and an eighth end;

[0023] One end of the third transient voltage suppression tube is electrically connected to the fifth input end, and the other end of the third transient voltage suppression tube is electrically connected to the fifth end;

[0024] The sixth end and the eighth end are electrically connected to the second control chip respectively;

[0025] One end of the fourth transient voltage suppression tube is electrically connected to the fifth input end, and the other end of the fourth transient voltage suppression tube is electrically connected to the seventh end.

[0026] Furthermore, in the laser cleaning system, the first differential module and the second differential module share a common ground.

[0027] Further, in the laser cleaning system, the AND gate module includes a first diode, a second diode, a first resistor and a first voltage source;

[0028] Among them, one end of the first resistor is electrically connected to the anode of the first diode, the anode of the first diode and the first output end respectively, the other end of the first resistor is connected to the first voltage source, the cathode of the first diode is electrically connected to the first input end, and the cathode of the second diode is electrically connected to the second input end.

[0029] Furthermore, in the laser cleaning system, the system also includes a laser galvanometer, and the deflection time of the laser galvanometer at the overlapping end width is not less than the interval time from the first input end receiving the optical signal of turning off the laser light to receiving the optical signal of turning on the laser light.

[0030] Furthermore, in the laser cleaning system, the system is used for single-axis cleaning or composite cleaning.

[0031] The laser cleaning system provided by the present application is provided with an AND gate module, and the slave control module is provided with a first output end to output the optical signal of the laser switch to the first input end of the AND gate module, and the master control module is provided with a second output end to output the enable signal of the laser light emission to the second input end of the AND gate. Then, when the system completes the cleaning of the overlapping end widths, the first output end outputs a light-off signal so that the AND gate module outputs a control signal for turning off the laser light emission; when the system cleans the non-overlapping widths, the first output end outputs a light-on signal so that the gate module outputs a control signal for turning on the laser light emission, thereby avoiding the problem of over-deep cleaning of the overlapping end widths, and greatly improving the effect of the laser cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A trajectory diagram of laser cleaning provided in an embodiment of the present application;

[0034] Figure 2 A schematic block diagram of a laser cleaning system provided in an embodiment of the present application;

[0035] Figure 3 A circuit diagram of a first differential module provided in an embodiment of the present application;

[0036] Figure 4 A circuit diagram of a second differential module provided in an embodiment of the present application;

[0037] Figure 5 A circuit diagram of an AND gate module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0040] It should also be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0041] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0042] See also Figure 2 , Figure 2 This is a schematic block diagram of a laser cleaning system provided in an embodiment of the present application. Figure 2 As shown, a laser cleaning system comprises:

[0043] A slave control module 70, comprising a first output end, the slave control module 70 is arranged inside the cleaning head, the first output end is used to output the optical signal Slave_MOD_TX of the laser 30 switch;

[0044] The main control module 10 comprises a second output terminal, wherein the second output terminal is used to output an enable signal C_Mod_mon for the laser 30 to emit light;

[0045] An AND gate module 20, comprising a first input terminal, a second input terminal and a third output terminal, wherein the first input terminal is electrically connected to the first output terminal, and the second input terminal is electrically connected to the second output terminal;

[0046] The laser 30 comprises a third input terminal, wherein the third input terminal is electrically connected to the third output terminal;

[0047] Among them, when the laser cleaning system completes the cleaning of the overlapping end web 60, the first output end outputs an optical signal for turning off the light emission of the laser 30, so that the third output end outputs a control signal for turning off the light emission of the laser 30; when the laser cleaning system cleans the non-overlapping web, the first output end outputs an optical signal for turning on the light emission of the laser 30, so that the third output end outputs a control signal for turning on the light emission of the laser 30.

[0048] Specifically, the third output end of the gate module 20 is electrically connected to the third input end of the laser 30, and the control signal C_Mod for switching the laser 30 to emit light can be input to the third input end of the laser 30, that is, the control signal for turning off the laser 30 and the control signal for turning on the laser 30 to emit light, which can be two high and low level signals respectively.

[0049] In this embodiment, the main control module 10 can be an MCU (microcontroller unit), and the laser cleaning system is mainly used for single-axis cleaning or composite cleaning. At the same time, the laser cleaning system also includes a laser galvanometer. The deflection time of the laser galvanometer at the overlapping end surface 60 is not less than the interval time from the first input end receiving the light signal of turning off the laser 30 to receiving the light signal of turning on the laser 30, which can further avoid the problem of repeated cleaning of the end surface 60 caused by the laser turning on before the motor of the laser galvanometer is deflected.

[0050] At the same time, the slave control module 70 is arranged inside the cleaning head, and a detection unit is arranged at the slave control module 70, which can detect whether there is an abnormality inside the cleaning head (such as scattered light, motor, temperature and humidity, lens, etc.), then at this time, the slave control module 70 can also output the optical signal Slave_MOD_TX of the laser 30 switch through the first output end. In other words, the optical signal Slave_MOD_TX of the laser 30 switch output from the first output end comes from the detection unit at the slave control module.

[0051] The deflection time is determined by the motor speed of the laser galvanometer and the end width 60. For example, when the motor speed is 10000mm / s and the end width 60 is 2mm, the deflection time of the motor of the laser galvanometer at the end width 60 is 200us. In other words, the switching of the laser 30 light-on signal needs to be completed within 200us, that is, the interval time needs to be less than 200us, so the deflection time of the laser galvanometer at the overlapped end width 60 is not less than the interval time for the first input end to switch from receiving the light-off signal to receiving the light-on signal.

[0052] It can be understood that the optical signal output from the first output end for turning off the laser 30 and the optical signal for turning on the laser 30 are two high and low level signals respectively, wherein the optical signal for turning off the laser 30 is a low level signal, and the optical signal for turning on the laser 30 is a high level signal.

[0053] The laser cleaning system provided in the present application is provided with an AND gate module 20, and the slave control module 70 is provided with a first output end to output the optical signal of the laser 30 switch to the first input end of the AND gate module 20, and the master control module 10 is provided with a second output end to output the enable signal of the laser 30 emitting light to the second input end of the AND gate. Then, when the system completes the cleaning of the overlapping end web 60, the first output end outputs a light-off signal so that the AND gate module 20 outputs a control signal for turning off the laser 30 emitting light; when the system cleans the non-overlapping web, the first output end outputs a light-on signal so that the gate module outputs a control signal for turning on the laser 30 emitting light, thereby avoiding the problem of over-deep cleaning of the overlapping end web 60, and greatly improving the effect of the laser 30 cleaning process.

[0054] In some embodiments, Figure 2 As shown, the system also includes a first differential module 40 and a second differential module 50; wherein, the first differential module 40 includes a fourth input terminal and a fourth output terminal, and the second differential module 50 includes a fifth input terminal and a fifth output terminal; the fourth input terminal is electrically connected to the first output terminal, the fourth output terminal is electrically connected to the fifth input terminal, and the fifth output terminal is electrically connected to the first input terminal.

[0055] In this embodiment, the delayed response time of the first differential module 40 and the second differential module 50 are both at the ns level, which can meet the response time of signal switching. At the same time, the application adopts the first differential module 40 and the second differential module 50, which can also enhance the anti-interference ability of the light-on signal and the light-off signal.

[0056] In addition, the main purpose of using two differential modules in the present application is to ensure that the level signal received by the first differential module 40 is consistent with the level signal received by the first input end of the AND gate module 20 .

[0057] In some embodiments, Figure 3 As shown, the first differential module 40 includes a first anti-interference module and a first control chip U4; wherein, the first control chip U4 includes the fourth input terminal, the first anti-interference module includes the fourth output terminal, and the first control chip U4 is electrically connected to the first anti-interference module.

[0058] In this embodiment, the first output end of the slave control module 70 can output the optical signal of the laser 30 switch to the first control chip U4. After the optical signal is converted into a first differential signal (Slave_MOD_H and Slave_MOD_L respectively) by the first control chip U4, it is input into the first anti-interference module, and then input into the second differential module 50 through the first anti-interference module.

[0059] Furthermore, if Figure 3 As shown, the first anti-interference module also includes a first common-mode inductor L3, a first transient voltage suppressor TVS1 and a second transient voltage suppressor TVS2; wherein the first common-mode inductor L3 includes a first end, a second end, a third end and a fourth end; one end of the first transient voltage suppressor TVS1 is electrically connected to the first end, the second end is electrically connected to the first control chip U4, and the other end of the first transient voltage suppressor TVS1 is electrically connected to the fourth output end; one end of the second transient voltage suppressor TVS2 is electrically connected to the third end, the fourth end is electrically connected to the first control chip U4, and the other end of the second transient voltage suppressor TVS2 is electrically connected to the fourth output end.

[0060] In this embodiment, the model of the first control chip U4 may be SIT82C250, and the first control chip U4 includes pins VCC, GND, D, R, RS, VREF, CANH, and CANL, wherein pin VCC is connected to a 5V voltage source, and is connected to ground CAN_GND through capacitors C12 and C13 connected in parallel; pin GND is connected to ground CAN_GND, pin RS is connected to ground CAN_GND through resistor R79, and pin VREF is connected to ground CAN_GND through capacitor C14; pin CANH is electrically connected to the second end, pin CANL is electrically connected to the fourth end, and resistor R3 is provided between the first end and the third end. At the same time, the other end of the first transient voltage suppressor tube TVS1 and the other end of the second transient voltage suppressor tube TVS2 are respectively provided with connection points A and B, and the fourth output end formed by wiring terminals is provided at connection points A and B.

[0061] In some embodiments, Figure 4 As shown, the second differential module 50 includes a second anti-interference module and a second control chip U5; wherein, the second control chip U5 includes the fifth output terminal, the second anti-interference module includes the fifth input terminal, and the second control chip U5 is electrically connected to the second anti-interference module.

[0062] In this embodiment, the differential signal output by the first differential module 40 can be input into the second control chip U5 through the second anti-interference module, and converted into an optical signal Slave_MOD by the second control chip U5, and input into the first input end of the AND gate.

[0063] Furthermore, if Figure 4 As shown, the second anti-interference module also includes a second common-mode inductor L2, a third transient voltage suppressor TVS3 and a fourth transient voltage suppressor TVS4; wherein the second common-mode inductor L2 includes a fifth end, a sixth end, a seventh end and an eighth end; one end of the third transient voltage suppressor TVS3 is electrically connected to the fifth input end, and the other end of the third transient voltage suppressor TVS3 is electrically connected to the fifth end; the sixth end and the eighth end are electrically connected to the second control chip U5 respectively; one end of the fourth transient voltage suppressor TVS4 is electrically connected to the fifth input end, and the other end of the fourth transient voltage suppressor TVS4 is electrically connected to the seventh end.

[0064] In this embodiment, the model of the second control chip U5 can be NSI1050-DDBR. The second control chip U5 includes pin VDD1, pin RXD, pin TXD, three pins GND1, pin VDD2, pin CANH, pin CANL, and three pins GND2, wherein pin VDD1 is connected to a 3.3V voltage source and is connected to ground GND through capacitors C37 and C38 connected in parallel; pin RXD outputs an optical signal Slave_MOD, and three pins GND1 are connected to ground GND; pin VDD2 is connected to ground GND through capacitors C35 connected in parallel , capacitor C36 is grounded CAN_GND and connected to a 5V voltage source; pin CANH is electrically connected to the sixth end, pin CANL is electrically connected to the eighth end, a resistor R36 is arranged between the fifth end and the seventh end, the other end of the third transient voltage suppressor TVS3 and the other end of the fourth transient voltage suppressor TVS4 are respectively provided with a connection point C and a connection point D, and a fifth input end formed by wiring terminals is arranged at the connection point C and the connection point D; the three pins GND2 are connected to the ground CAN_GND and are also connected to the ground wire EARTH through a parallel resistor R37 and a capacitor C39.

[0065] In some embodiments, the first differential module 40 and the second differential module 50 are grounded. Specifically, since the first differential module 40 and the second differential module 50 are respectively located on the main control board and the slave control board of the system, which are in an isolated state, the first differential module 40 and the second differential module 50 need to be grounded.

[0066] In some embodiments, Figure 5 As shown, the AND gate module 20 includes a first diode D7, a second diode D8, a first resistor R38 and a first voltage source 3V3; wherein, one end of the first resistor R38 is electrically connected to the anode of the first diode D7, the anode of the first diode D7 and the first output end, respectively, the other end of the first resistor R38 is connected to the first voltage source 3V3, the cathode of the first diode D7 is electrically connected to the first input end, and the cathode of the second diode D8 is electrically connected to the second input end.

[0067] In this embodiment, the first voltage source 3V3 is a 3.3V voltage source. When the cathode of the first diode D7 and the cathode of the second diode D8 input a low level (such as 0V) at the same time, the first diode D7 and the second diode D8 are both turned on, and the point E outputs a low level; when the cathode of the first diode D7 inputs a low level (such as 0V) and the cathode of the second diode D8 inputs a high level (such as 3.3V), the first diode D7 is turned on, and the point E outputs a low level; when the cathode of the first diode D7 inputs a high level (such as 3.3V) and the cathode of the second diode D8 inputs a low level (such as 0V), the second diode D8 is turned on, and the point E outputs a low level; when the cathode of the first diode D7 and the cathode of the second diode D8 input a high level (such as 3.3V) at the same time, the first diode D7 and the second diode D8 cannot be turned on, and the point E outputs a high level.

[0068] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A laser cleaning system, characterized in that: include: A slave control module, comprising a first output end, the slave control module is arranged inside the cleaning head, and the first output end is used to output the optical signal of the laser switch; A main control module, comprising a second output terminal, wherein the second output terminal is used to output an enable signal for the laser to emit light; An AND gate module, comprising a first input terminal, a second input terminal and a third output terminal, wherein the first input terminal is electrically connected to the first output terminal, and the second input terminal is electrically connected to the second output terminal; A laser, comprising a third input terminal, the third input terminal being electrically connected to the third output terminal; Among them, when the laser cleaning system completes the cleaning of the overlapping end webs, the first output end outputs an optical signal for turning off the laser light, so that the third output end outputs a control signal for turning off the laser light; when the laser cleaning system cleans the non-overlapping webs, the first output end outputs an optical signal for turning on the laser light, so that the third output end outputs a control signal for turning on the laser light.

2. The laser cleaning system according to claim 1, characterized in that: The system also includes a first differential module and a second differential module; Among them, the first differential module includes a fourth input terminal and a fourth output terminal, and the second differential module includes a fifth input terminal and a fifth output terminal; the fourth input terminal is electrically connected to the first output terminal, the fourth output terminal is electrically connected to the fifth input terminal, and the fifth output terminal is electrically connected to the first input terminal.

3. The laser cleaning system according to claim 2, characterized in that: The first differential module includes a first anti-interference module and a first control chip; Wherein, the first control chip includes the fourth input end, the first anti-interference module includes the fourth output end, and the first control chip is electrically connected to the first anti-interference module.

4. The laser cleaning system according to claim 3, characterized in that: The first anti-interference module also includes a first common-mode inductor, a first transient voltage suppression tube and a second transient voltage suppression tube; Wherein, the first common mode inductor includes a first end, a second end, a third end and a fourth end; One end of the first transient voltage suppression tube is electrically connected to the first end, the second end is electrically connected to the first control chip, and the other end of the first transient voltage suppression tube is electrically connected to the fourth output end; One end of the second transient voltage suppression tube is electrically connected to the third end, the fourth end is electrically connected to the first control chip, and the other end of the second transient voltage suppression tube is electrically connected to the fourth output end.

5. The laser cleaning system according to claim 2, characterized in that: The second differential module includes a second anti-interference module and a second control chip; The second control chip includes the fifth output terminal, the second anti-interference module includes the fifth input terminal, and the second control chip is electrically connected to the second anti-interference module.

6. The laser cleaning system according to claim 5, characterized in that: The second anti-interference module also includes a second common-mode inductor, a third transient voltage suppression tube and a fourth transient voltage suppression tube; Wherein, the second common mode inductor includes a fifth end, a sixth end, a seventh end and an eighth end; One end of the third transient voltage suppression tube is electrically connected to the fifth input end, and the other end of the third transient voltage suppression tube is electrically connected to the fifth end; The sixth end and the eighth end are electrically connected to the second control chip respectively; One end of the fourth transient voltage suppression tube is electrically connected to the fifth input end, and the other end of the fourth transient voltage suppression tube is electrically connected to the seventh end.

7. The laser cleaning system according to claim 2, characterized in that: The first differential module and the second differential module share a common ground.

8. The laser cleaning system according to any one of claims 1 to 7, characterized in that: The AND gate module includes a first diode, a second diode, a first resistor and a first voltage source; Among them, one end of the first resistor is electrically connected to the anode of the first diode, the anode of the first diode and the first output end respectively, the other end of the first resistor is connected to the first voltage source, the cathode of the first diode is electrically connected to the first input end, and the cathode of the second diode is electrically connected to the second input end.

9. The laser cleaning system according to any one of claims 1 to 7, characterized in that: The system further comprises a laser galvanometer, wherein the deflection time of the laser galvanometer at the overlapping end plane is not less than the interval time from when the first input end receives the optical signal for turning off the laser light to when it receives the optical signal for turning on the laser light.

10. The laser cleaning system according to any one of claims 1 to 7, characterized in that: The system is used for single-axis cleaning or composite cleaning.

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