Laser processing control method

Abstract

The invention relates to the technical field of laser processing, and discloses a laser processing control method which can improve the processing safety and the processing precision of laser stripping. The system comprises a control module, a human body characteristic signal identification module, a control switch module, an objective table, a laser module, a beam shaping module and a focusing module. The control module can be used for executing the laser processing method or the laser processing control method. The laser parameters matched with the workpieces to be machined and the moving path during machining can be determined, so that lasers with corresponding parameters can be output according to different workpieces to be machined, and directional machining is completed; besides, the first human body characteristic signal of the processing personnel is synchronously identified and is synchronously matched with the reserved information, so that whether the current personnel have the corresponding processing authority or not can be judged, irrelevant personnel can be limited to start the laser processing device, the safety and the reliability are improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing, in particular to a laser processing control method. Background Art

[0002] In the micro-display product industry such as Micro LED / Micro OLED, Mini LED, etc., during the manufacturing process of such products, there will be a process requirement to remove a transparent covering film in the pin area of ​​the product. The covering film is usually composed of different material layers such as aluminum oxide, titanium oxide, silicon nitride, and some also have an organic polymer layer. The overall thickness of this covering film is about 1 micron, and it is more suitable to peel it off with a laser, but ordinary lasers are difficult to peel it off accurately and cleanly, and it is very easy to damage the metal layer and other materials below. In addition, in the existing laser processing device, anyone only needs to press the start switch to start the device, which poses a safety hazard; at the same time, the existing laser processing device does not set operation permissions. When the staff needs to be replaced during the work process or for other reasons, no corresponding restrictions are taken, which is easy to cause safety accidents or damage to the product due to improper operation. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a laser processing method that can improve the processing safety and processing accuracy of laser lift-off.

[0004] The present invention also provides a laser processing device having the above laser processing method.

[0005] On the one hand, a laser processing method according to an embodiment of the present invention includes:

[0006] When a start signal is received, a first human feature signal of a current processing person and a processing image signal of a workpiece to be processed are acquired, and the first human feature signal and the processing image signal are compared with the reserved information;

[0007] When the first human feature signal is successfully paired with the processed image signal, the laser parameters and processing moving path information bound to the corresponding reserved information are determined, and the workpiece to be processed is transported to the area to be processed;

[0008] When a processing signal is received, the corresponding laser is output according to the laser parameters, and the workpiece to be processed is directionally moved according to the processing movement path information to cooperate with the laser to complete the corresponding processing on the workpiece to be processed;

[0009] When the workpiece to be processed is processed, the laser output is stopped and the workpiece to be processed is transported to a loading and unloading area.

[0010] According to some embodiments of the present invention, the laser parameters include laser size information corresponding to the workpiece to be processed, and further include the following steps:

[0011] According to the laser size information, the size parameters of the laser spot are adjusted.

[0012] According to some embodiments of the present invention, the laser parameters also include laser parameters corresponding to the workpiece to be processed, and before outputting the laser to perform laser processing on the workpiece to be processed when the pairing is successful, the laser power is adjusted according to the laser parameters.

[0013] According to some embodiments of the present invention, the laser parameters also include laser wavelength information corresponding to the workpiece to be processed. When the pairing is successful, before outputting the laser to perform laser processing on the workpiece to be processed, the wavelength parameters of the laser are adjusted according to the laser wavelength information.

[0014] According to some embodiments of the present invention, the processing signal is issued after the current processing personnel presses the processing switch.

[0015] On the other hand, the laser processing device according to an embodiment of the present invention includes a control module, a human feature signal recognition module, a control switch module, a stage, a laser module, a beam shaping module and a focusing module; the control module is used to execute the laser processing method as described in the above embodiment of the present invention; the human feature signal recognition module is electrically connected to the control module; the control switch module is electrically connected to the control module; the stage is used to place and move the workpiece to be processed; the laser module is used to output laser and is electrically connected to the control module; the beam shaping module is placed on the output optical path of the laser module and is electrically connected to the control module, and can shape the laser output by the laser module; the focusing module is arranged on the output optical path of the beam shaping module, and outputs the focused laser to the workpiece to be processed on the stage.

[0016] According to some embodiments of the present invention, a positioning camera module is further included to obtain an image of the workpiece to be processed to determine the position of the workpiece to be processed.

[0017] In some embodiments of the present invention, the human body characteristic signal recognition module at least includes a human body recognition chip and a human body characteristic identifier.

[0018] According to some embodiments of the present invention, the laser module includes an excimer laser for outputting laser light.

[0019] According to some embodiments of the present invention, the laser module further comprises at least one first reflective lens, and the at least one first reflective lens is arranged in the optical path between the excimer laser and the beam shaping module so that the laser light of the excimer laser can be transmitted into the beam shaping module.

[0020] According to some embodiments of the present invention, the control switch module includes an operation switch and a processing switch; the operation switch is used to start the signal; and the processing switch is used to output the processing signal.

[0021] The embodiments of the present invention have at least the following beneficial effects: by synchronously identifying the first human characteristic signal of the processing personnel and the processing image signal of the workpiece to be processed, the laser parameters matching the workpiece to be processed and the moving path during processing can be determined, so that the laser with corresponding parameters can be output according to different workpieces to be processed, and directional processing can be completed, so that the laser can only peel off the material layer that needs to be removed on the surface of the workpiece to be processed, and the laser can be prevented from damaging the metal layer under the workpiece to be processed; in addition, since the first human characteristic signal of the processing personnel is synchronously identified and synchronously matched with the reserved information, it can be determined whether the current employee has the corresponding processing authority, and irrelevant personnel can be restricted from starting the laser processing device, which can not only improve safety, but also avoid damage to the workpiece due to improper operation, improve reliability, and reduce production costs.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a structural schematic diagram of a laser processing device according to an embodiment of the present invention;

[0025] Figure 2 A schematic structural diagram of a laser processing device according to another embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the process of the laser processing method according to the first embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the process of the laser processing method according to the second embodiment of the present invention;

[0028] Figure 5 A schematic structural diagram of a laser processing device according to another embodiment of the present invention;

[0029] Figure 6Schematic diagram of the process of the laser processing control method according to the third embodiment of the present invention;

[0030] Figure 7 A schematic structural diagram of a laser processing device according to another embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the process of the laser processing control method according to the fourth embodiment of the present invention;

[0032] Fig. 9 Schematic diagram of the process of the laser processing control method according to the fifth embodiment of the present invention;

[0033] Fig.10 A schematic structural diagram of a laser processing device according to another embodiment of the present invention;

[0034] Fig.11 Schematic diagram of the flow of the laser processing control method according to the sixth embodiment of the present invention.

[0035] Reference numerals:

[0036] Label name Label name 100 Control Module 620 First reflective lens 200 Human feature signal recognition module 700 Beam shaping module 300 Control switch module 710 Second reflective lens 400 Stage 800 Focus module 500 Positioning the camera module 900 Card recognition module 600 Laser Module 1000 Card clamp module 610 Excimer laser DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0038] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, top, bottom, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0039] It should be noted that, unless otherwise specified, when a feature is referred to as being "electrically connected" or "electrically connected" to another feature, the two features may be directly connected via pins, or connected via cables, or connected via wireless transmission. The specific electrical connection method is a common method for those skilled in the art, and those skilled in the art can achieve the connection as needed.

[0040] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments, not for limiting the present invention. The term "and / or" used herein includes any combination of one or more related listed items.

[0041] It should be understood that, although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0042] On the one hand, referring to Figure 1 According to an embodiment of the present invention, the laser processing device includes a control module 100, a human feature signal recognition module 200, a control switch module 300, a stage 400, a laser module 600, a beam shaping module 700 and a focusing module 800; the control module 100 can be used to execute the laser processing method or the laser processing control method as in the embodiment of the present invention; the human feature signal recognition module 200 is electrically connected to the control module 100; the control switch module 300 is electrically connected to the control module 100; the stage 400 is used to place and move the workpiece to be processed; the laser module 600 is used to output laser and is electrically connected to the control module 100; the beam shaping module 700 is placed on the output optical path of the laser module 600 and is electrically connected to the control module 100, and can shape the laser output by the laser module 600; the focusing module 800 is arranged on the output optical path of the beam shaping module 700, and outputs the focused laser to the workpiece to be processed on the stage 400.

[0043] The control module 100 can control the laser module 600 to output a laser of corresponding parameters. After being shaped by the beam shaping module 700, the laser will become a light spot of corresponding size or shape. The shaped laser is then focused by the focusing module 800 and transmitted to the surface of the workpiece to be processed on the carrier; wherein the human body characteristic signal recognition module 200 is used to identify the human body characteristic signal of the current processing personnel to confirm whether the current processing personnel has the corresponding authority, and cooperate with the control switch module 300 to control the laser module 600 to output a laser of corresponding parameters. The control module 100 can control the laser module 600 to output a laser of corresponding power or wavelength, and the control module 100 can control the beam shaping module 700 to adjust the state of the beam shaping module 700, thereby outputting a light spot of corresponding shape or size. It should be noted that the stage 400 is provided with a driving source, which can drive the stage 400 to move parallely within a plane, and thus can directionally move the workpiece to be processed, and the specific structure of the control module 100, the structure of the stage 400 and the driving method are conventional technical means in the field, and will not be described in detail here.

[0044] In some embodiments of the present invention, the human feature signal recognition module 200 includes at least a human feature recognition chip and a human feature identifier; the human feature identifier is used to collect human feature signals; the human feature recognition chip is used to use a human feature recognition algorithm to recognize the human feature signals obtained by the human feature identifier to obtain a human recognition result. The human feature recognition algorithm includes at least one of a vein recognition algorithm, a fingerprint feature recognition algorithm, an iris recognition algorithm, a retina recognition algorithm, a face recognition algorithm or a voiceprint recognition algorithm. According to the corresponding recognition algorithm, the human feature identifier can adopt a professional vein identifier, a fingerprint identifier, an iris identifier, a retina identifier, a face identifier and a voiceprint identifier. The specific selection can select at least one of the identifiers according to actual needs to identify the human feature signals of the processing personnel. It should be noted that the human feature recognition algorithm can use the conventional corresponding recognition algorithm of those skilled in the art to identify the human feature signals, which will not be described in detail this time.

[0045] Reference Figure 2 In some embodiments of the present invention, a positioning camera module 500 is further included to obtain an image of the workpiece to be processed to determine the position of the workpiece to be processed. With the positioning camera module 500, not only can the image information and position information of the workpiece to be processed be identified, but also the information can be fed back to the control module 100 to control the stage 400 to move the workpiece to be processed according to the set moving path, and the surface material layer of the workpiece to be processed can be peeled off with the laser.

[0046] In some embodiments of the present invention, the laser module 600 includes an excimer laser 610 for outputting laser light. The excimer laser 610 has very high single pulse energy, and its output laser has a short wavelength, the output laser wavelength range is between 105nm and 308nm, and the single pulse energy of the laser is more than 100 microjoules. The material in the stripping area of ​​the workpiece to be processed can be directly vaporized and blown off, which can achieve efficient stripping, and will not cause damage to the lower layer material of the workpiece to be processed, effectively improving the accuracy of laser processing.

[0047] In some embodiments of the present invention, the laser module 600 further includes at least one first reflective lens 620, which is disposed on the optical path between the excimer laser 610 and the beam shaping module 700, so that the laser light of the excimer laser 610 can be transmitted to the beam shaping module 700. With the first reflective lens 620, the laser light can be transmitted in a specified direction, thereby achieving effective and accurate transmission in a limited space, wherein those skilled in the art can select the appropriate number of first reflective lenses 620, the appropriate angle setting, and the appropriate location of the first reflective lenses 620 according to actual conditions.

[0048] In some embodiments of the present invention, the control switch module 300 includes an operation switch and a processing switch; the operation switch is used to start the signal; the processing switch is used to output the processing signal. The operation switch and the processing switch are provided to facilitate the processing personnel to control the control module 100, thereby improving convenience.

[0049] In some embodiments of the present invention, the structure of the beam shaping module 700 is conventional technology in the field, such as a slit device commonly used in the field. In this embodiment, the beam shaping module 700 includes four blades and a motor structure. The four blades are distributed around to form a rectangular hole in the middle. With the drive of the motor, the positions of the four blades can be adjusted, so that the size of the rectangle can be adjusted, and then the size of the spot passing through the beam shaping module 700 can be changed. The control module 100 can control the motor according to the size in the set laser parameters so that the rectangle can be adjusted to the required size, and the required laser spot size can be output, thereby improving convenience.

[0050] Reference Figure 1 or Figure 2 In some embodiments of the present invention, at least one second reflective lens 710 is further included between the beam shaping module 700 and the focusing module 800, so that the laser optical path can be adjusted according to the actual site, so that the laser output by the beam shaping module 700 can be transmitted to the focusing module 800. In addition, in this embodiment, the focusing module 800 uses a focusing lens, which can focus the laser to enhance the energy of the laser, thereby ensuring the accuracy of laser processing.

[0051] Reference Figure 2 and Figure 3 , which is Embodiment 1, the laser processing method according to the present invention is applied to the laser processing device of the present invention, the laser processing device at least includes a control module 100, a human feature signal recognition module 200, a control switch module 300, a stage 400, a laser module 600, a beam shaping module 700, a focusing module 800 and a positioning camera module 500, and the laser processing method includes the following steps:

[0052] S110, when a start signal is received, obtaining a first human feature signal of the current processing personnel and a processing image signal of the workpiece to be processed, and comparing the first human feature signal and the processing image signal with the reserved information;

[0053] S210, when the first human feature signal is successfully paired with the processed image signal, the laser parameters and processing moving path information bound to the corresponding reserved information are determined, and the workpiece to be processed is transported to the area to be processed;

[0054] S310, when a processing signal is received, a corresponding laser is output according to the laser parameters, and the workpiece to be processed is directionally moved according to the processing movement path information, so as to cooperate with the laser to complete corresponding processing on the workpiece to be processed;

[0055] S410, when the workpiece is processed, the laser output is stopped and the workpiece is transported to the loading and unloading area.

[0056] Among them, it should be noted that the processing personnel can press the run switch to input the start signal, thereby starting the control module 100 to start executing step S110. In step S110, the human feature signal recognition module 200 obtains the first human feature signal through fingerprint recognition, pupil recognition, face recognition, etc. The specific acquisition means belong to the conventional technical means of those skilled in the art, and the specific means of positioning the camera module 500 to obtain the processed image signal also belong to the conventional technical means of those skilled in the art. The two technical means will not be described in detail this time. Among them, after obtaining the first human feature signal, it is necessary to determine the corresponding identity information and confirm the information of the workpiece to be processed corresponding to the processed image signal; the reserved information can be stored in the permission card or in the memory of the control module 100, or in the cloud of the background of the laser processing device; in this embodiment, it should be noted that the reserved information includes multiple groups, each group of reserved information includes mutually bound identity information, workpiece information, laser parameters and processing movement path. In addition to determining whether the identity information corresponding to the first human feature signal and the workpiece information corresponding to the processed image signal already exist in the reserved information, it is also necessary to determine whether the identified identity information and the workpiece information match. The information in the reserved information belonging to the same group, that is, the identity information existing in the system matches the corresponding workpiece information, when obtaining the first human feature signal and the processed image signal, it is necessary to determine whether the two match; if the match is successful, step S210 is executed, if the match fails, step S110 is continued until success.

[0057] In step S210, when it is determined that the collected first human feature signal matches the processed image signal, the laser parameters and processing movement path information corresponding to the same group are synchronously determined, and the identified workpiece to be processed is moved to the processing area to wait for the processing signal;

[0058] In step S310, when it is determined that the workpiece to be processed is moved to the area to be processed, the current processing personnel presses the processing switch to input the processing signal. When the processing signal is received, the corresponding laser is output according to the laser parameters in step S210, and the workpiece to be processed is directionally moved according to the processing movement path information determined in step S210. Specifically, the control module 100 controls the stage 400 to move in a directional manner according to the determined processing movement path information. During the movement, the positioning camera module 500 is synchronously cooperated to determine the position of the workpiece to be processed on the stage 400, so as to adjust the movement path of the stage 400 in real time to cooperate with the laser to complete the corresponding processing of the workpiece to be processed. In this embodiment, the laser processing is to peel off the material layer that needs to be cleared on the surface of the workpiece to be processed; it should be noted that the laser parameters include laser size information, laser power information and laser wavelength information corresponding to the workpiece to be processed.

[0059] In step S410, after the workpiece is moved in a directional manner to cooperate with the laser to complete processing, the control module 100 controls the laser module 600 to stop outputting the laser, and the control module 100 controls the stage 400 to transport the workpiece to be processed to the loading and unloading area, so as to facilitate the replacement of the next batch of workpieces to be processed that need to be peeled off.

[0060] In this embodiment, by setting the identity information of each group of matched processing personnel, information of the workpiece to be processed, laser parameters and moving path information, the processing personnel can be restricted to process only the matched workpiece to be processed, and the laser processing device can be restricted to output only the laser parameters required for the workpiece to be processed, and the processing is performed according to the processing moving path information that has been matched by the system. This not only prevents unauthorized processing personnel from running the laser processing device, but also prevents authorized processing personnel from arbitrarily outputting lasers with different parameters, avoids accidents, and avoids unnecessary damage to the workpiece to be processed due to excessive laser power, thereby effectively improving the reliability of laser processing.

[0061] Reference Figure 2 and Figure 4 , which is the second embodiment, the laser processing method according to the present invention is applied to the laser processing device in the above embodiment of the present invention, the laser processing device at least includes a control module 100, a human feature signal recognition module 200, a control switch module 300, a stage 400, a laser module 600, a beam shaping module 700, a focusing module 800 and a positioning camera module 500, and the laser processing method includes the following steps:

[0062] S120, when a start signal is received, obtaining a first human feature signal of the current processing personnel and a processing image signal of the workpiece to be processed, and comparing the first human feature signal and the processing image signal with the reserved information;

[0063] S220, when the first human feature signal is successfully paired with the processed image signal, the laser parameters and processing moving path information bound to the corresponding reserved information are determined, and the identity information in the reserved information matched by the first human feature signal is set as the operation judgment reference, and the workpiece to be processed is transported to the processing area;

[0064] S320, when a processing signal is received, the second human characteristic signal of the current processing personnel is obtained again, and the second human characteristic signal is compared with the operation judgment reference. When the pairing is successful, the corresponding laser is output according to the laser parameters, and the workpiece to be processed is directionally moved according to the processing movement path information to cooperate with the laser to complete the corresponding processing of the workpiece to be processed;

[0065] S420, when the workpiece is processed, the laser output is stopped and the workpiece is transported to the loading and unloading area.

[0066] It should be noted that, in step S120, after obtaining the first human feature signal, it is necessary to determine the corresponding identity information and the workpiece information corresponding to the processed image signal; the reserved information is the information pre-stored in the background database in the system. In this embodiment, it should be noted that the reserved information includes multiple groups, each group of reserved information includes mutually bound identity information, workpiece information, laser parameters and processing movement path. In addition to determining whether the identity information corresponding to the first human feature signal and the workpiece information corresponding to the processed image signal already exist in the reserved information, it is also necessary to determine whether the identified identity information and the workpiece information match. The information in the reserved information of the same group, that is, the identity information existing in the system matches the corresponding workpiece information, needs to be determined when obtaining the first human feature signal and the processed image signal. If the match is successful, step S220 is executed. If the match fails, step S120 is continued until success.

[0067] In step S220, when it is determined that the collected first human feature signal matches the processed image signal, the laser parameters and processing moving path information corresponding to the same group are synchronously determined. At this time, it is necessary to set the currently determined identity signal as the operation judgment reference, and then move the identified workpiece to be processed to the processing area to wait for the processing signal;

[0068] In step S320, when it is determined that the workpiece to be processed moves to the area to be processed, the current processing personnel presses the processing switch to input the processing signal. When the processing signal is received, the second human feature signal of the current processing personnel is collected again to determine whether the identity information corresponding to the second human feature signal matches the operation judgment reference in step S220. If the verification fails, the next processing signal is continued to be waited for. If the pairing is successful, the corresponding laser is output according to the laser parameters in step S220, and the workpiece to be processed is directionally moved according to the processing movement path information determined in step S220. Specifically, the control module 100 controls the stage 400 to move in a direction according to the determined processing movement path information. During the movement, the positioning camera module 500 is synchronously coordinated to determine the position of the workpiece to be processed on the stage 400, so as to adjust the movement path of the stage 400 in real time to cooperate with the laser to complete the corresponding processing of the workpiece to be processed. In this embodiment, the laser processing is to peel off the material layer that needs to be cleared on the surface of the workpiece to be processed.

[0069] In step S420, after the workpiece is moved in a directional manner to complete processing with the laser, the control module 100 controls the laser module 600 to stop outputting the laser, and the control module 100 controls the stage 400 to transport the workpiece to be processed to the loading and unloading area, so as to facilitate replacement of the next batch of workpieces to be processed that need to be peeled off.

[0070] In this embodiment, the difference between the second embodiment and the first embodiment is that: in step S220, the operation judgment benchmark is set, and before the laser is output in step S320, the current processing personnel are again collected and judged, which can avoid unexpected situations. For example, after executing steps S120 and S220, if the current processing personnel leave due to temporary matters, if the operation judgment benchmark is not set, any other personnel can start the laser processing device by pressing the processing button, which may cause unreasonable processing of the workpiece to be processed. In this way, it is possible that the workpiece to be processed is processed multiple times or other personnel perform malicious operations, which will cause the workpiece to be processed to be processed. Damage to parts or accidents may occur, which may easily increase production costs or cause unnecessary injuries. Therefore, before outputting the corresponding laser in step S320, it is necessary to determine again whether the current processing personnel is the same, so as to prevent other personnel from starting the laser processing device. This can limit each processing personnel to complete steps S120, S220, S320 and S420 separately before replacing the personnel. This can avoid multiple processing of the workpiece, and can also avoid accidents due to improper operation of other personnel, effectively improving safety and reliability, and avoiding unnecessary increase in production costs.

[0071] Reference Figure 5 and Figure 6 , which is the third embodiment, a laser processing control method, which is applied to the laser processing device in the above embodiment of the present invention, the laser processing device at least includes a control module 100, a human feature signal recognition module 200, a control switch module 300, a stage 400, a laser module 600, a beam shaping module 700, a focusing module 800 and a card recognition module 900, and the laser processing control method includes the following steps:

[0072] S130, when a start signal is received, obtaining a signal from the authority card, and determining reserved information corresponding to the authority card, where the reserved information at least includes laser parameters and processing personnel information;

[0073] S230, obtaining a first human body characteristic signal of the current processing personnel, and comparing the first human body characteristic signal with the processing personnel information;

[0074] S330, when the pairing is successful, determining the identity information corresponding to the first human feature signal, setting the identity information as an operation judgment reference, and transporting the workpiece to be processed to the processing area;

[0075] S430, when a processing signal is received, a second human characteristic signal of the current processing personnel is obtained again, and the second human characteristic signal is compared with the operation judgment reference. When the pairing is successful, a corresponding laser is output according to the laser parameters to perform laser processing on the workpiece;

[0076] S530, when the workpiece is processed, the laser output is stopped and the workpiece is transported to the loading and unloading area.

[0077] It should be noted that, unlike the above-mentioned embodiment, the laser processing device adds a card recognition module 900 for the permission card. The card recognition technology in the card recognition module 900 belongs to conventional technical means in the art and will not be described in detail here. In addition, in step S130, the signal of the permission card is obtained by the processing personnel inserting the permission card for identification. The permission card is bound to the corresponding reserved information, which at least includes the matching laser parameters and processing personnel information. In this way, the processing personnel matched with the permission card can be restricted to operate only the laser matched with the permission card, so as to limit the processing personnel's operating authority, avoid the output of the laser with excessive power, and prevent safety accidents or damage to the workpiece to be processed.

[0078] In step S230 and step S330, when it is determined that the collected first human feature signal matches the identity information in the authority card, it is necessary to set the currently determined identity signal as the operation judgment reference, and then move the identified workpiece to be processed to the processing area to wait for the processing signal;

[0079] In step S430, when it is determined that the workpiece to be processed moves to the area to be processed, the current processing personnel presses the processing switch to input the processing signal. When the processing signal is received, the second human feature signal of the current processing personnel is collected again to determine whether the identity information corresponding to the second human feature signal matches the operation judgment reference in step S330. If the verification fails, the next processing signal is continued to be waited for. If the matching is successful, the corresponding laser is output according to the laser parameters in step S130. In this embodiment, the laser processing is to peel off the material layer that needs to be cleared on the surface of the workpiece to be processed;

[0080] In step S530, after the workpiece to be processed is moved in a directional manner to cooperate with the laser to complete processing, the control module 100 controls the laser module 600 to stop outputting the laser, and the control module 100 controls the worktable 400 to transport the processed workpiece to the loading and unloading area, so as to facilitate the replacement of the next batch of workpieces to be processed that need to be peeled off.

[0081] In this embodiment, by setting the identity information and laser parameters of each group of matching processing personnel, the processing personnel can be restricted to only operate the laser processing device to output the corresponding laser at the set laser power. If the currently recognized first human feature signal does not match the identity information of the authority card, the laser processing device cannot be started. This not only prevents unauthorized processing personnel from running the laser processing device, but also prevents authorized processing personnel from arbitrarily outputting lasers with different parameters, which can avoid accidents and unnecessary damage to the workpiece due to excessive laser power, thereby effectively improving the reliability of laser processing. In addition, setting the operation judgment benchmark in step S330 and performing secondary collection and judgment on the current processing personnel before outputting the laser in step S430 can avoid unexpected situations. For example, after executing steps S130, S230 and S330, if the current processing personnel leaves due to temporary matters, if the operation judgment benchmark is not set, any other personnel can start the laser processing device by pressing the processing button, which may cause unreasonable processing of the workpiece to be processed. In this way, it is possible that the workpiece to be processed may be processed multiple times or other personnel may perform malicious operations, thereby causing damage to the workpiece or unexpected Therefore, before outputting the corresponding laser in step S430, it is necessary to determine whether the current processing personnel is the same, so as to prevent other personnel from starting the laser processing device. This can limit each processing personnel to complete step S130, step S230, step S330, step S430 and step S530 separately before replacing the personnel. This can avoid multiple processing of the workpiece and accidents caused by improper operation of other personnel, effectively improving safety and reliability and avoiding unnecessary production costs.

[0082] Reference Figure 7 and Figure 8 , which is the fourth embodiment, according to the laser processing control method of the present invention, is applied to the laser processing device in the above embodiment of the present invention, the laser processing device at least includes a control module 100, a human feature signal recognition module 200, a control switch module 300, a stage 400, a laser module 600, a beam shaping module 700, a focusing module 800, a positioning camera module 500 and a card recognition module 900, and the laser processing control method includes the following steps:

[0083] S140, when a start signal is received, obtaining a signal of the authority card, and determining reserved information corresponding to the authority card, the reserved information at least including laser parameters, processing personnel information, and processing image information of the workpiece to be processed;

[0084] S240, obtaining a first human feature signal of the current processing personnel and a processed image signal of the workpiece to be processed, and comparing the first human feature signal and the processed image signal with the reserved information corresponding to the authority card;

[0085] S340, when the first human feature signal is successfully paired with the processed image signal, the laser parameters bound to the corresponding reserved information are determined, and the identity information in the reserved information matched by the first human feature signal is set as the operation judgment reference, and the workpiece to be processed is transported to the processing area;

[0086] S440, when a processing signal is received, a second human characteristic signal of the current processing person is obtained again, and the second human characteristic signal is compared with the operation judgment reference, and when the pairing is successful, a corresponding laser is output according to the laser parameters to perform laser processing on the workpiece;

[0087] S540, when the workpiece is processed, the laser output is stopped and the workpiece is transported to the loading and unloading area.

[0088] It can be known that the difference between Example 4 and Example 3 is that: a positioning camera module 500 is added to recognize the processing image signal of the workpiece to be processed, so that the processing personnel can be limited to laser processing only the set workpiece to be processed, and the output of laser to other objects can be avoided, thereby preventing safety accidents. For example, if laser can be output to different objects at will, fire may occur. Therefore, by adding a method for identifying the workpiece to be processed, even authorized operators cannot run the laser processing device at will, thereby improving safety and reliability.

[0089] Reference Figure 7 and Fig. 9 , which is Embodiment 5, the laser processing control method according to the present invention is applied to the laser processing device in the above embodiments of the present invention, the laser processing device at least includes a control module 100, a human feature signal recognition module 200, a control switch module 300, a stage 400, a laser module 600, a beam shaping module 700, a focusing module 800, a positioning camera module 500 and a card recognition module 900, and the laser processing control method includes the following steps:

[0090] S150, when a start signal is received, a signal of the authority card is obtained, and reserved information corresponding to the authority card is determined, where the reserved information at least includes laser parameters, processing personnel information, processing image information of the workpiece to be processed, and processing moving path information;

[0091] S250, obtaining a first human feature signal of the current processing personnel and a processed image signal of the workpiece to be processed, and comparing the first human feature signal and the processed image signal with the reserved information corresponding to the authority card;

[0092] S350, when the first human feature signal is successfully paired with the processed image signal, the laser parameters and processing moving path information bound to the corresponding reserved information are determined, and the identity information in the reserved information matched by the first human feature signal is set as the operation judgment reference, and the workpiece to be processed is transported to the processing area;

[0093] S450, when a processing signal is received, the second human characteristic signal of the current processing personnel is obtained again, and the second human characteristic signal is compared with the operation judgment reference. When the pairing is successful, the corresponding laser is output according to the laser parameters to perform laser processing on the workpiece to be processed, and the workpiece to be processed is directionally moved according to the processing movement path information to cooperate with the laser to complete the corresponding processing of the workpiece to be processed;

[0094] S550: When the workpiece is processed, the laser output is stopped and the workpiece is transported to the loading and unloading area.

[0095] It can be known that the difference between Example 5 and Example 4 is that the processing movement path information of the workpiece to be processed is added, so that the workpiece to be processed can be limited to laser processing only in the set manner, and the processing personnel can be prevented from performing unnecessary processing on the workpiece due to improper operation. Not only can safety accidents be prevented, but also damage to the workpiece to be processed can be prevented. For example, if the workpiece to be processed is moved at will, fire may occur or the workpiece to be processed may be damaged. Therefore, by adding a method for identifying the workpiece to be processed, even authorized operators cannot arbitrarily process the workpiece, further improving safety and reliability.

[0096] Reference Fig.10 and Fig.11 , which is the sixth embodiment, according to the laser processing control method of the present invention, it is applied to the laser processing device in the above embodiment of the present invention, the laser processing device at least includes a control module 100, a human feature signal recognition module 200, a control switch module 300, a stage 400, a laser module 600, a beam shaping module 700, a focusing module 800, a positioning camera module 500 and a card recognition module 900, wherein the card recognition module 900 is further provided with a card clamping module 1000, the card clamping module 1000 is electrically connected to the control module 100, and is controlled by the control module 100, and can clamp the authority card. Before the restriction is not lifted, the authority card cannot be taken out. The laser processing control method includes the following steps:

[0097] S160, when a start signal is received, obtaining a signal of the authority card, determining reserved information corresponding to the authority card and locking the authority card, wherein the reserved information includes at least laser parameters, processing personnel information, processing image information of the workpiece to be processed, and processing moving path information;

[0098] S260, obtaining a first human feature signal of the current processing personnel and a processed image signal of the workpiece to be processed, and comparing the first human feature signal and the processed image signal with the reserved information corresponding to the authority card;

[0099] S360, when the first human feature signal is successfully paired with the processed image signal, the laser parameters and processing moving path information bound to the corresponding reserved information are determined, and the identity information in the reserved information matched by the first human feature signal is set as the operation judgment reference, and the workpiece to be processed is transported to the processing area;

[0100] S460, when a processing signal is received, the second human characteristic signal of the current processing personnel is obtained again, and the second human characteristic signal is compared with the operation judgment reference. When the pairing is successful, the corresponding laser is output according to the laser parameters to perform laser processing on the workpiece to be processed, and the workpiece to be processed is directionally moved according to the processing movement path information to cooperate with the laser to complete the corresponding processing of the workpiece to be processed;

[0101] S560, when the workpiece is processed, the laser output is stopped, and the workpiece is transported to the loading and unloading area;

[0102] S660. When a card retrieval signal is identified, a third-party human body characteristic signal of the current processing personnel is obtained, and the third-party human body is compared with the operation judgment benchmark. When the pairing is successful, the restriction of the authority card is lifted to facilitate the processing personnel to take it away.

[0103] It can be known that the difference between Example 6 and Example 5 is that the laser processing device adds a card clamping module 1000 and the control switch module 300 adds a card removal switch. The card clamping module 1000 can be a conventional card clamping structure in the field, which belongs to the conventional technical means in the field and will not be described in detail this time. The locking of the permission card is added. In step S160, when it is recognized that a permission card is inserted in the card insertion area, the permission card can be locked by the card clamping module 1000, so that the permission card can be restricted from being easily removed. After the processing is completed, only the processing personnel corresponding to the permission card can press the card removal switch to output the card removal signal to execute step 660, that is, the control module 100 controls the card clamping module 1000 to release the permission card before the processing personnel can remove the permission card. In this way, even if the processing personnel forget to take the permission card, it can prevent the permission card from being easily stolen and the data from being tampered with, and restrict other unauthorized personnel from being able to operate the laser processing device.

[0104] From the steps of the sixth embodiment, it can be seen that the sixth embodiment implements triple restrictions:

[0105] First, you need to have an authorization card, identify and match the current processing personnel and the workpiece to be processed to confirm whether processing can begin:

[0106] Second, after moving to the processing area, the processing personnel are identified again and judged in combination with the operation judgment benchmark to prevent personnel replacement during the process;

[0107] The third is to set restrictions on the removal of permission cards, which can remind other processing personnel to remind them that someone is currently on duty. It can also prevent permission cards from being easily stolen, prevent data from being tampered with due to theft, and restrict other unauthorized personnel from operating the laser processing equipment.

[0108] By limiting the triple conditions, not only can safety accidents be effectively prevented, but also damage to the workpieces can be prevented. Therefore, by adding locking authority cards, safety and reliability can be further improved.

[0109] It can be known that embodiments three to six adopt the method of authority card identification, that is, each processing personnel who matches the authority is equipped with a corresponding authority card. By identifying the authority card, it can serve as a reminder, that is, to remind whether there are processing personnel working on the current laser processing device, so as to avoid the situation where there are parts to be processed on the workpiece stage 400 and it will be directly started by another processing personnel for processing, which can effectively avoid secondary processing or misoperation.

[0110] In some embodiments of the present invention, the laser parameters include at least one of the laser size information, laser power information and laser wavelength information corresponding to the workpiece to be processed. Before the laser is outputted in step S310, step S320, step S430, step S440, step S450 and step S460, the following steps are also included: according to at least one of the laser size information, laser power information or laser wavelength information, at least one of the size parameters of the laser spot, laser power or laser wavelength is adjusted. That is, after determining the laser parameters, if there is a difference between the last laser parameters and the currently required laser parameters, the corresponding parameters need to be adjusted. When it is determined that the laser parameters need to be adjusted, it can be at least one of the laser size information, laser power information and laser wavelength information, or two of them, or three parameters can be adjusted simultaneously. Thus, the laser with the required parameters can be output to complete the corresponding processing of the workpiece to be processed.

[0111] Among them, the size parameters of the laser spot can be adjusted through the beam shaping module 700. In this embodiment, the beam shaping module 700 includes four blades and a motor structure. The four blades are distributed around to form a rectangular hole in the middle. With the drive of the motor, the positions of the four blades can be adjusted, so that the size of the rectangle can be adjusted, and then the size of the spot passing through the beam shaping module 700 can be changed. The control module 100 can control the motor according to the size in the set laser parameters so that the rectangle can be adjusted to the required size, and the required laser spot size can be output, thereby improving convenience.

[0112] Among them, the method of adjusting the laser power can be to control the laser module 600 to output a laser of corresponding power through the control module 100, that is, in some embodiments, the control module 100 can directly control the excimer laser 610 in the laser module 600 to output a laser of corresponding power. Similarly, the method of adjusting the laser wavelength can also be to control the laser module 600 to output a laser of corresponding wavelength through the control module 100, that is, in some embodiments, the control module 100 can directly control the excimer laser 610 in the laser module 600 to output a laser of corresponding wavelength.

[0113] Other structures and operations of the laser processing device according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0114] According to an embodiment of the present invention, through such a setting, at least some of the following effects can be achieved: the first human body characteristic signal of the processing personnel and the processing image signal of the workpiece to be processed can be synchronously identified, the laser parameters matching the workpiece to be processed and the moving path during processing can be determined, so that the laser with corresponding parameters can be output according to different workpieces to be processed, and directional processing can be completed, so that the laser can only peel off the material layer that needs to be removed on the surface of the workpiece to be processed, and the laser can be prevented from damaging the metal layer under the workpiece to be processed; in addition, since the first human body characteristic signal of the processing personnel is synchronously identified and synchronously matched with the reserved information, it can be determined whether the current employee has the corresponding processing authority, and irrelevant personnel can be restricted from starting the laser processing device, which can not only improve safety, but also avoid damage to the workpiece due to improper operation, improve reliability, and reduce production costs.

[0115] The above are only preferred embodiments of the present invention. The present invention is not limited to the above embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure. They shall all belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical solutions and / or implementation methods may have various modifications and changes.

Claims

1. A laser processing control method, characterized in that: The following steps are involved: When a start signal is received, a signal of the authority card is obtained, and reserved information corresponding to the authority card is determined, wherein the reserved information at least includes laser parameters and processing personnel information; Acquire a first human body characteristic signal of a current processing personnel, and compare the first human body characteristic signal with the processing personnel information; When the pairing is successful, the identity information corresponding to the first human feature signal is determined, the identity information is set as the operation judgment reference, and the workpiece to be processed is transported to the processing area; When a processing signal is received, a second human characteristic signal of the current processing person is obtained again, and the second human characteristic signal is compared with the operation judgment reference. When the pairing is successful, a corresponding laser is output according to the laser parameters to perform laser processing on the workpiece to be processed; When the workpiece to be processed is processed, the laser output is stopped and the workpiece to be processed is transported to a loading and unloading area.

2. The laser processing control method according to claim 1, characterized in that: The laser parameters include laser size information corresponding to the workpiece to be processed, and also include the following steps: According to the laser size information, the size parameters of the laser spot are adjusted.

3. The laser processing control method according to claim 1, characterized in that: The laser parameters also include laser parameters corresponding to the workpiece to be processed. When the pairing is successful, before outputting the laser to perform laser processing on the workpiece to be processed, the power of the laser is adjusted according to the laser parameters.

4. The laser processing control method according to claim 1, characterized in that: The laser parameters also include laser wavelength information corresponding to the workpiece to be processed. When the pairing is successful, before outputting the laser to perform laser processing on the workpiece to be processed, the wavelength parameters of the laser are adjusted according to the laser wavelength information.

5. The laser processing control method according to claim 1, characterized in that: The processing signal is sent out after the current processing personnel presses the processing switch.

6. The laser processing control method according to claim 1, characterized in that: A laser processing device is used, and the laser processing device includes: A control module (100) for executing the laser processing control method according to any one of claims 1 to 5; a human body characteristic signal recognition module (200) electrically connected to the control module (100); A control switch module (300) electrically connected to the control module (100); A loading platform (400) is used to place and move the workpiece to be processed; A positioning camera module (500) is used to obtain a processing image signal of the workpiece to be processed and is electrically connected to the control module (100); A laser module (600), used for outputting laser light and electrically connected to the control module (100); a beam shaping module (700), disposed on the output optical path of the laser module (600) and electrically connected to the control module (100), capable of shaping the laser output by the laser module (600); A focusing module (800) is arranged on the output optical path of the beam shaping module (700) and outputs focused laser light to the workpiece to be processed on the stage (400); The card identification module (900) is used to identify the authority card.

7. The laser processing control method according to claim 6, characterized in that: The human body characteristic signal recognition module (200) comprises at least a human body recognition chip and a human body characteristic identifier.

8. The laser processing control method according to claim 6, characterized in that: The laser module (600) includes an excimer laser (610) for outputting laser light.

9. The laser processing control method according to claim 8, characterized in that: The laser module (600) further comprises at least one first reflective lens (620), wherein the at least one first reflective lens (620) is arranged on the optical path between the excimer laser (610) and the beam shaping module (700) so as to enable the laser light of the excimer laser (610) to be transmitted into the beam shaping module (700).

10. The laser processing control method according to claim 6, characterized in that: The control switch module (300) comprises: Run switch, used for starting signal; The processing switch is used to output the processing signal.

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