Laser marking apparatus and method

Abstract

The invention discloses a laser marking device and method, and relates to the technical field of intelligent laser processing equipment.The laser marking device is characterized in that a carrying module is arranged among a feeding module, a processing module, a sorting module and a discharging module and synchronously executes grabbing, transferring and placing actions of a plurality of target workpieces, and a laser marking module comprises two laser marking parts; the included angle between the laser emitting ends of the two laser marking parts is 90 degrees, the two laser marking parts can conduct synchronous marking on different areas of a target workpiece, and the reading and recognizing module is used for reading and recognizing marked marks on the target workpiece after marking. The sorting module is used for screening and storing target workpieces containing marking marks which do not meet preset requirements. According to the technical scheme, the two laser marking parts synchronously mark at the included angle of 90 degrees, the marking pattern can be prevented from inclining, the marking accuracy is improved, taking, marking, detecting and sorting actions can be executed at the same time, the process linkage is tight, the equipment space occupation amount is reduced, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of intelligent laser processing equipment technology, and in particular to a laser marking device and method. Background Technology

[0002] In the production and processing of cylindrical workpieces such as armatures, laser marking and quality inspection are critical processes. Clear and accurate text and QR code markings must be formed on the workpiece surface, ensuring that the markings meet quality standards. In existing technologies, laser marking equipment often uses a single laser head design, marking only a localized area of ​​the workpiece at a time. This requires multiple adjustments to the workpiece position to complete the overall marking operation, resulting in low efficiency and accuracy. Furthermore, the marking, inspection, and sorting processes are often independently set up, requiring workpieces to be transported manually or using multiple independent handling devices. This not only occupies a large space and increases equipment costs but also easily leads to misaligned markings and misjudged inspections due to positioning deviations during transport. Moreover, it prevents simultaneous operation of multiple workpieces, reducing product yield and production efficiency. Summary of the Invention

[0003] This invention provides a laser marking device and method, in which two laser marking units are positioned at a 90° angle to mark synchronously. This helps prevent the marking pattern from being skewed, improves marking accuracy, and can simultaneously perform material picking, marking, detection, and sorting actions. The process is closely integrated, reduces equipment space occupancy, and lowers costs.

[0004] In a first aspect, embodiments of the present invention provide a laser marking device. The laser marking device includes a body and a loading module, a transport module, a processing module, a sorting module, and an unloading module disposed on the body. The loading module and the unloading module are each equipped with a fixture; the fixture in the loading module is used to carry the target workpiece to be processed, and the fixture in the unloading module is used to carry the target workpiece that has already been processed. The transport module is configured to simultaneously perform gripping, transferring, and placing actions on multiple target workpieces between the loading module, processing module, sorting module, and unloading module. The processing module includes a laser marking module and a reading and recognition module. The laser marking module includes two laser marking sections, with the laser emission ends of the two laser marking sections set at a 90° angle. The two laser marking sections can simultaneously mark different areas of the target workpiece. The reading and recognition module is used to read and recognize the marking marks on the target workpiece after being marked by the laser marking module. The sorting module is used to screen and store target workpieces containing marking marks that do not meet preset requirements.

[0005] This invention's technical solution incorporates a feeding module, a transport module, a processing module, a sorting module, and an unloading module. The transport module is configured to simultaneously perform the gripping, transferring, and placing of multiple target workpieces across the feeding, processing, sorting, and unloading modules. This allows for simultaneous material handling, marking, inspection, and sorting, resulting in a tightly integrated workflow, reduced equipment space requirements, and lower costs. A laser marking module, comprising two laser marking units positioned at a 90° angle between their laser emission ends, enables simultaneous marking of different areas of the target workpiece. The orthogonal spatial arrangement of the marking areas helps prevent skewed markings and improves accuracy. The sorting module filters and stores target workpieces with markings that do not meet preset requirements, ensuring a high yield of products from the unloading module and improving quality control.

[0006] According to the aforementioned embodiment of the first aspect of the present invention, the target workpiece is cylindrical, wherein one laser marking part forms a first mark on the target workpiece, and another laser marking part forms a second mark on the target workpiece, the first mark and the second mark being combined to form a marking mark. The laser irradiation range of the two laser marking parts covers a continuous area of ​​1 / 2 on the outer surface of the target workpiece. In the technical solution of the present invention, one laser marking part forms a first mark on the target workpiece, and another laser marking part forms a second mark on the target workpiece, the first mark and the second mark being combined to form a marking mark, and the laser irradiation range of the two laser marking parts covers a continuous area of ​​1 / 2 on the outer surface of the target workpiece, which can complete the marking operation of 1 / 2 cylindrical surface of the armature in one go, and can quickly and efficiently mark 1 / 2 surface of any position on the cylindrical surface of the target workpiece in a single marking process, which is beneficial to improving marking efficiency and accuracy and preventing the marking pattern from being skewed.

[0007] According to the foregoing embodiment of the first aspect of the present invention, the conveying module includes: a first mounting part, a first moving component, and a second moving component. A plurality of first gripping parts are sequentially spaced along a first direction on the first mounting part, and the first gripping parts are used to grip a target workpiece. The first moving component includes a first driving part and a first guide rail, and the first driving part is capable of driving the first mounting part to move along the first guide rail along a second direction. The second moving component includes a second driving part and a second guide rail, and the second driving part is capable of driving the first moving component to move along the second guide rail along the first direction, wherein the second direction is perpendicular to the first direction.

[0008] According to the aforementioned embodiments of the first aspect of the present invention, the processing module includes a second mounting part and multiple workstations, which are sequentially and spaced apart along a first direction in the second mounting part. At least one first gripping part, driven by a second moving component, is correspondingly positioned to at least one workstation, enabling the at least one first gripping part to grip a target workpiece from one workstation and simultaneously transfer the target workpiece to the next workstation. The technical solution of the present invention, by setting multiple workstations and at least one first gripping part corresponding to at least one workstation under the drive of the second moving component, enables the at least one first gripping part to grip a target workpiece from one workstation and simultaneously transfer the target workpiece to the next workstation. Through the movement of the transport module in the first direction, the first gripping part can complete the picking, marking, inspection, and sorting actions of the target workpiece between different workstations in a single movement stroke. The process is tightly connected, reducing equipment space occupation and lowering costs.

[0009] According to the aforementioned embodiment of the first aspect of the present invention, the workstation includes a gripping station, which is located close to the feeding module, and the first gripping part is capable of gripping the target workpiece from the fixture of the feeding module to the gripping station.

[0010] According to the aforementioned embodiment of the first aspect of the present invention, the workstation further includes a laser marking workstation corresponding to the laser marking module, located downstream of the workstation to be gripped. The laser marking workstation includes a first rotating platform and a dust removal unit. The first rotating platform is equipped with a fixture for carrying the target workpiece. The first gripping unit can grip the target workpiece from the workstation to be gripped onto the fixture on the first rotating platform. The first rotating platform can drive the target workpiece to rotate, so that the surface to be processed on the target workpiece faces the laser emission ends of the two laser marking units. The dust removal unit is used to absorb dust generated by the laser marking units when marking the target workpiece. The technical solution of the present invention, by setting up a first rotating platform to carry and precisely rotate the target workpiece, aligns its surface to be processed with the laser emission end, avoiding marking misalignment caused by multiple positioning steps. By setting up a dust removal unit, which absorbs dust generated by the laser marking units when marking the target workpiece, it is beneficial to promptly remove the dust generated during marking, improve the cleanliness of the optical lens and the working environment, thereby improving the marking accuracy.

[0011] According to the aforementioned embodiments of the first aspect of the present invention, the reading and recognition module includes a code reading component and a visual recognition component. The marked mark includes a graphic code and text. The code reading component is used to read the graphic code, and the visual recognition component is used to visually recognize and detect the text. The workstation also includes a code reading workstation and a visual recognition workstation arranged sequentially at intervals along a first direction. The code reading component is set corresponding to the code reading workstation, and the visual recognition workstation is set corresponding to the visual recognition component. Both the code reading workstation and the visual recognition workstation are located downstream of the laser marking workstation. A first gripping unit can grip the marked target workpiece from the laser marking workstation to the code reading workstation, and simultaneously, a first gripping unit can grip the read target workpiece from the code reading workstation to the visual recognition workstation. The technical solution of this invention is to set up a first gripping unit that can grip the marked target workpiece from the laser marking station to the code reading station, and at the same time, a first gripping unit can grip the read target workpiece from the code reading station to the vision recognition station. This allows the first gripping unit to complete the transfer of the target workpiece between the code reading station and the vision recognition station in a single movement, resulting in a tight process connection, reduced equipment space occupation, and lower costs.

[0012] According to the foregoing embodiments of the first aspect of the present invention, the barcode reading station includes a second rotating platform capable of rotating the target workpiece so that the surface of the target workpiece bearing the marking is facing the barcode reading component. The visual recognition station includes a third rotating platform capable of rotating the target workpiece so that the surface of the target workpiece bearing the marking is facing the visual recognition component. The technical solution of the present invention, by setting up the second and third rotating platforms, adjusts the posture of the target workpiece, ensuring that the marking is completely and clearly presented in the field of view of the barcode reading component and the visual recognition component, thereby improving the recognition accuracy.

[0013] According to the foregoing embodiments of the first aspect of the present invention, the sorting module is electrically connected to the reading and recognition module. The sorting module includes a second gripping unit, a first storage location, and a second storage location. The workstation also includes a sorting station, which is configured corresponding to the sorting module and is located downstream of the visual recognition station. A first gripping unit can grip a target workpiece from the visual recognition station to the sorting station. A second gripping unit can grip a target workpiece from the sorting station that includes a graphic code that does not meet preset requirements to the first storage location. A second gripping unit can grip a target workpiece from the sorting station that includes text that does not meet preset requirements to the second storage location. A first gripping unit can grip a target workpiece from the sorting station that includes both a graphic code and text that meet preset requirements to the unloading module. This invention's technical solution involves setting up a second gripping unit, a first storage location, and a second storage location. The second gripping unit can grip target workpieces from the sorting station, including those with graphic codes that do not meet preset requirements, and move them to the first storage location. The first storage location is used to store target workpieces with defective graphic codes. Similarly, the second gripping unit can grip target workpieces from the sorting station, including those with text that does not meet preset requirements, and move them to the second storage location. The second storage location is used to store target workpieces with defective text. When target workpieces are transferred to the sorting station, based on the judgment result of the reading and recognition module, qualified products are gripped by the first gripping unit of the handling module and moved to the unloading module. Target workpieces with markings that do not meet preset requirements are then categorized and gripped by the second gripping unit and moved to the corresponding storage location. This ensures the yield rate of products coming out of the unloading module, improves the level of quality control, and also facilitates subsequent rework. The synchronous transfer of good and defective products also helps to further improve overall operational efficiency.

[0014] According to any of the foregoing embodiments of the first aspect of the present invention, the spacing between the plurality of first gripping parts is matched with the spacing between the plurality of workstations. The technical solution of the present invention, by setting the spacing between the plurality of first gripping parts to match the spacing between the plurality of workstations, facilitates the parallel flow of multiple workpieces between multiple workstations. The first gripping parts simultaneously perform material handling, marking, inspection, and sorting actions between different workstations, resulting in a tighter process connection, improved overall equipment output, reduced equipment space occupancy, and lower costs.

[0015] According to any of the foregoing embodiments of the first aspect of the present invention, the feeding module, the conveying module, and the unloading module are arranged on the machine body along a first direction. The processing module and the sorting module are located on one side of the conveying module. The technical solution of the present invention, by arranging the feeding module, the conveying module, and the unloading module on the machine body along a first direction, with the processing module and the sorting module located on one side of the conveying module, forms an overall T-shaped layout. This organically integrates the core functional areas such as feeding, processing, detection, sorting, and unloading, facilitating the realization of complex processes within a limited space. The equipment structure is compact, reducing the space occupied by the equipment.

[0016] According to any of the foregoing embodiments of the first aspect of the present invention, both the feeding module and the unloading module include: a receiving part, a third moving component, a first sensor, and a second sensor. The fixture of the feeding module is disposed on the receiving part of the feeding module, and the fixture of the unloading module is disposed on the receiving part of the unloading module. The third moving component includes a third driving part and a third guide rail, the third driving part being capable of driving the fixture to move along a first direction on the third guide rail. The first sensor is disposed on the receiving part and is used to detect the operation state of manual feeding or unloading. The second sensor is disposed on the receiving part and is used to detect whether there is a target workpiece on the fixture. The technical solution of the present invention, by setting the first sensor, which is used to detect the operation state of manual feeding or unloading, is beneficial to improving the safety of manual operation. By setting the second sensor, which is used to detect whether there is a target workpiece on the fixture, it avoids safety accidents caused by the handling module malfunctioning when there is no material, and automatically senses the material status, which is beneficial to achieving smooth connection of human-machine collaborative operation.

[0017] Secondly, embodiments of the present invention provide a laser marking method, wherein a target workpiece is marked using a laser marking device according to any of the foregoing embodiments of the first aspect of the present invention. The laser marking method includes: placing the target workpiece to be processed on a fixture of a loading module; picking up and transferring the target workpiece from the fixture of the loading module to a processing module using a transport module; simultaneously marking different areas of the target workpiece using a laser marking module; reading and recognizing the marking marks on the target workpiece using a reading and recognition module, determining whether the marking marks meet preset requirements, and generating corresponding recognition results; based on the recognition results, filtering out target workpieces containing marking marks that do not meet preset requirements using a sorting module, and transferring the filtered target workpieces that do not meet preset requirements to a corresponding storage location; and transferring the marked target workpieces that meet preset requirements to a fixture of a unloading module using a transport module.

[0018] This invention employs a laser marking device to mark target workpieces. The laser marking method includes: placing the target workpiece to be processed on a fixture of a loading module; transferring the target workpiece from the fixture of the loading module to the processing module via a transport module; simultaneously marking different areas of the target workpiece using a laser marking module; reading and recognizing the markings on the target workpiece using a reading and recognition module to determine whether the markings meet preset requirements and generating corresponding recognition results; based on the recognition results, filtering out target workpieces containing markings that do not meet preset requirements using a sorting module and transferring the filtered target workpieces that do not meet preset requirements to the corresponding storage location; and transferring the marked target workpieces that meet the preset requirements to a fixture of a unloading module using a transport module. The transport module is configured to simultaneously perform multiple target workpiece grabbing, transferring, and placing actions between the loading module, processing module, sorting module, and unloading module. The transport module can simultaneously perform material handling, marking, detection, and sorting actions, resulting in a tightly integrated process, reduced equipment space occupancy, and lower costs. By incorporating a laser marking module, comprising two laser marking units positioned at a 90° angle between their laser emission ends, the two units can simultaneously mark different areas of the target workpiece. Since the marking areas of the two units are orthogonally arranged in space, the synchronous marking helps prevent skewed markings and improves accuracy. A sorting module is also included to filter and store target workpieces with markings that do not meet preset requirements, ensuring a high yield of products from the unloading module and improving quality control. This invention achieves full automation of the marking, inspection, and sorting process through dual-laser synchronous marking, multi-station synchronous operation, and modular integrated design, reducing manual intervention and lowering labor intensity and human error rates. Optimized layout and structural design balance efficiency, accuracy, and space utilization, while also providing good versatility and safety. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the laser marking equipment of the present invention; Figure 2 This is a schematic diagram of the feeding module from a first angle in one embodiment of the laser marking equipment of the present invention; Figure 3 This is a schematic diagram of the feeding module from a second angle in one embodiment of the laser marking equipment of the present invention; Figure 4 This is a schematic diagram of the transport module in one embodiment of the laser marking equipment of the present invention; Figure 5 This is a schematic diagram of the processing module in one embodiment of the laser marking equipment of the present invention; Figure 6 This is a schematic diagram of the sorting module in one embodiment of the laser marking equipment of the present invention; Figure 7 This is a schematic flowchart of an embodiment of the laser marking method of the present invention.

[0021] Explanation of icon numbers: Machine body - 100, loading module - 200, handling module - 300, processing module - 400, sorting module - 500, unloading module - 600, target workpiece - 700; Material receiving part-210, third drive part-220, third guide rail-230, first sensor-240, second sensor-250, first mounting part-310, first gripping part-320, first drive part-330, first guide rail-340, second drive part-350, second guide rail-360, laser marking part-410, code reading component-420, vision recognition component-430, second mounting part-440, second gripping part-510, first storage position-520, second storage position-530; Fixture-A1, Grab Station-A2, Laser Marking Station-A3, Code Reading Station-A4, Vision Recognition Station-A5, Sorting Station-A6, Fourth Drive Unit-A7; First rotating platform - A31, dust removal section - A32, second rotating platform - A41, third rotating platform - A51; First direction - S1, second direction - S2.

[0022] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0026] This invention provides a laser marking device and method, in which two laser marking units are positioned at a 90° angle to mark synchronously. This helps prevent the marking pattern from being skewed, improves marking accuracy, and can simultaneously perform material picking, marking, detection, and sorting actions. The process is closely integrated, reduces equipment space occupancy, and lowers costs.

[0027] like Figures 1 to 6 As shown, this embodiment of the invention provides a laser marking device. The laser marking device includes a body 100 and a feeding module 200, a conveying module 300, a processing module 400, a sorting module 500, and an unloading module 600 disposed on the body 100. The modules work together to achieve fully automated operation of marking, detecting, and sorting the target workpiece 700.

[0028] The loading module 200 and the unloading module 600 are each equipped with a fixture A1. The fixture A1 of the loading module 200 is used to hold the target workpiece 700 to be processed, and the fixture A1 of the unloading module 600 is used to hold the target workpiece 700 that has been processed. The loading or unloading is done manually. The top surface of the fixture A1 is provided with a limiting groove that matches the shape of the target workpiece 700.

[0029] The processing module 400 includes a laser marking module and a reading and recognition module. The laser marking module includes two laser marking units 410, which are set at a 90° angle between their laser emission ends. The two laser marking units 410 can simultaneously mark different areas of the target workpiece 700.

[0030] The reading and recognition module is used to read and recognize the marking marks on the target workpiece 700 after being marked by the laser marking module.

[0031] The sorting module 500 is used to screen and store target workpieces 700 that contain markings that do not meet the preset requirements.

[0032] The transport module 300 is configured to simultaneously perform the gripping, transferring, and placing of multiple target workpieces 700 between the loading module 200, processing module 400, sorting module 500, and unloading module 600. For example, the transport module 300 can grip the target workpiece 700 from the fixture A1 of the loading module 200 and transfer the target workpiece 700 to the laser marking area of ​​the laser marking module and the reading and recognition area of ​​the reading and recognition module. The transport module 300 can also transfer the processed target workpiece 700 to the fixture A1 of the unloading module 600.

[0033] The technical solution of this invention sets up a feeding module 200, a handling module 300, a processing module 400, a sorting module 500, and an unloading module 600. The handling module 300 is configured to simultaneously perform the gripping, transferring, and placing of multiple target workpieces 700 between the feeding module 200, processing module 400, sorting module 500, and unloading module 600. The handling module 300 can simultaneously perform material handling, marking, inspection, and sorting actions, resulting in a tightly integrated process, reduced equipment space occupancy, and lower costs. By setting up a laser marking module, which includes two laser marking units 410, the laser emission ends of the two laser marking units 410 are set at a 90° angle. The two laser marking units 410 can simultaneously mark different areas of the target workpiece 700. Since the marking areas of the two laser marking units 410 are orthogonally arranged in space, the synchronous marking of the two laser marking units 410 helps prevent the marking pattern from being skewed and improves marking accuracy. By setting up the sorting module 500, target workpieces 700 containing markings that do not meet the preset requirements can be screened and stored based on the marking results, ensuring the yield of products coming out of the unloading module 600 and improving the level of quality control.

[0034] In some embodiments, the target workpiece 700 includes an armature or other cylindrical workpiece. One laser marking unit 410 forms a first mark on the target workpiece 700, and another laser marking unit 410 forms a second mark on the target workpiece 700. The first and second marks are combined to form a marking mark. The laser irradiation range of the two laser marking units 410 covers a continuous area of ​​half of the outer surface of the target workpiece 700. In the technical solution of this invention, one laser marking unit 410 forms a first mark on the target workpiece 700, and another laser marking unit 410 forms a second mark on the target workpiece 700. The first mark and the second mark are combined to form a marking mark, and the laser irradiation range of the two laser marking units 410 covers 1 / 2 of a continuous area on the outer surface of the target workpiece 700. The marking operation of 1 / 2 cylindrical surface of armature can be completed in one go. In a single marking process, 1 / 2 surface of any position on the cylindrical surface of the target workpiece 700 can be marked quickly and efficiently, which is beneficial to improving marking efficiency and accuracy and preventing the marking pattern from being skewed.

[0035] In some implementations, for example, when marking a QR code on the outer surface of the target workpiece 700, one laser marking unit 410 can mark half of the QR code (the first mark) on the target workpiece 700, and another laser marking unit 410 can mark the other half of the QR code (the second mark) on the target workpiece 700. The first mark and the second mark are combined to form a complete QR code graphic. Marking text on the outer surface of the target workpiece 700 is similar to the above method and will not be described in detail here.

[0036] In some embodiments, the feeding module 200, the conveying module 300, and the unloading module 600 are arranged on the machine body 100 along the first direction S1. The processing module 400 and the sorting module 500 are located on one side of the conveying module 300. The technical solution of this invention, by arranging the feeding module 200, the conveying module 300, and the unloading module 600 on the machine body 100 along the first direction S1, and the processing module 400 and the sorting module 500 located on one side of the conveying module 300, forms an overall T-shaped layout. This organically integrates the core functional areas of feeding, processing, detection, sorting, and unloading, facilitating the realization of complex processes within a limited space. The equipment structure is compact, reducing the space occupied by the equipment.

[0037] The T-shaped multi-module layout includes a loading module 200, a conveying module 300, and a unloading module 600 arranged horizontally on the machine body 100. The processing module 400 and the sorting module 500 are all located on one side of the conveying module 300. The sorting module 500 is arranged vertically on the machine body 100. The sorting station is located at the junction of the horizontal station and the vertical station. Each station is equipped with a positioning reference surface that is compatible with the fixture A1.

[0038] like Figures 2 to 3As shown, the feeding module 200 includes: a receiving section 210, a third moving component, a first sensor 240, and a second sensor 250. The fixture A1 of the feeding module 200 is disposed on the receiving section 210. The third moving component includes a third drive unit 220 (e.g., a cylinder) and a third guide rail 230. The third drive unit 220 can drive the fixture A1 to move along the first direction S1 on the third guide rail 230, thereby conveying the target workpiece 700. The first sensor 240 (e.g., a safety light curtain) is disposed on opposite sides of the receiving section 210 to detect the manual feeding operation state and trigger safety protection. The second sensor 250 (e.g., a material absence sensor) is disposed on the receiving section 210 to detect whether the fixture A1 has the target workpiece 700. The second sensor 250 is signal-connected to the conveying module 300, providing a material picking signal to the conveying module 300. The feeding module 200 is operated by manually placing the material onto the fixture A1. The safety light curtain senses the retraction of the hand, and then the absence sensor detects the presence of material. The cylinder pushes the fixture A1 with the target workpiece 700 to the gripping station, where the first gripping unit 320 picks up the material.

[0039] The technical solution of this invention improves safety during manual operation by setting a first sensor 240 to detect the manual feeding operation status. It also improves safety by setting a second sensor 250 to detect whether the target workpiece 700 is on the fixture A1, preventing the handling module 300 from malfunctioning and causing accidents when there is no material. This automatic sensing of material status facilitates smooth human-machine collaborative operation.

[0040] The structure of the unloading module 600 is similar to that of the loading module 200. The fixture A1 of the unloading module 600 is set on the material receiving part 210 of the unloading module 600, and the first sensor 240 is set on the material receiving part 210 to detect the manual material handling operation status. The unloading module 600 puts the material onto the fixture A1 of the unloading module 600 through the first gripping part 320, and then the product is taken out manually. This will not be described in detail here.

[0041] like Figure 4As shown, the conveying module 300 includes: a first mounting part 310, a first moving component, and a second moving component. The first mounting part 310 has an elongated structure, and a plurality of first gripping parts 320 are arranged sequentially at intervals along a first direction S1 on the first mounting part 310. The first gripping parts 320 are used to grip the target workpiece 700. Preferably, the inner side of the first gripping parts 320 is provided with an anti-slip and wear-resistant pad layer. The first moving component includes a first driving part 330 (such as a cylinder) and a first guide rail 340. The first driving part 330 can drive the first mounting part 310 to move along a second direction S2 (i.e., the Y-axis) on the first guide rail 340. The second direction S2 is perpendicular to the first direction S1. The second moving component includes a second driving part 350 (such as a cylinder) and a second guide rail 360. The second driving part 350 can drive the first moving component to move along the first direction S1 (i.e., the X-axis) on the second guide rail 360.

[0042] like Figure 4 As shown, five first gripping parts 320 are arranged sequentially at intervals along the first direction S1 on the first mounting part 310. All five first gripping parts 320 are pneumatic grippers. At the same time, the second drive part 350 drives a pneumatic gripper to move to the gripping station A2. Then, the first drive part 330 drives a pneumatic gripper to descend and pick up the material, which improves the material handling efficiency of the whole machine.

[0043] like Figures 5 to 6 As shown, the processing module 400 includes a second mounting part 440 and multiple workstations. The second mounting part 440 is a horizontal mounting plate, and the multiple workstations are sequentially and spaced apart along the first direction S1 on the second mounting part 440 to form a continuous production line. At least one first gripping part 320 is driven by the second moving component and is correspondingly set to at least one workstation, so that the at least one first gripping part 320 can grip the target workpiece 700 from one workstation and simultaneously move the target workpiece 700 to the next workstation.

[0044] The technical solution of this invention sets up multiple workstations, with at least one first gripping unit 320 corresponding to at least one workstation under the drive of the second moving component. This enables the at least one first gripping unit 320 to grip the target workpiece 700 from one workstation and simultaneously move the target workpiece 700 to the next workstation. Through the movement of the transport module 300 in the first direction S1, the first gripping unit 320 can complete the picking, marking, inspection, and sorting actions of the target workpiece 700 between different workstations in a single movement stroke. The process is closely connected, reducing the space occupied by the equipment and lowering costs.

[0045] like Figure 1 As shown, the workstation includes a gripping station A2, which is located near the feeding module 200. The first gripping unit 320 can grip the target workpiece 700 from the fixture A1 of the feeding module 200 to the gripping station A2.

[0046] like Figures 5 to 6 As shown, the workstation also includes a laser marking workstation A3, which is set downstream of the laser marking module.

[0047] like Figure 1 As shown, the reading and recognition module includes a code reading component 420 (such as a code reader) and a visual recognition component 430 (such as a visual recognition camera). The marked mark includes graphic codes and text. The code reading component 420 is used to read the graphic codes, and the visual recognition component 430 is used to visually recognize and detect the text.

[0048] like Figures 5 to 6 As shown, the workstation also includes a code reading workstation A4 and a vision recognition workstation A5 arranged sequentially at intervals along the first direction S1. The code reading component 420 is set corresponding to the code reading workstation A4, and the vision recognition workstation A5 is set corresponding to the vision recognition component 430. Both the code reading workstation A4 and the vision recognition workstation A5 are located downstream of the laser marking workstation A3. A first gripping unit 320 can grip the marked target workpiece 700 from the laser marking workstation A3 and transfer it to the code reading workstation A4. At the same time, a first gripping unit 320 can grip the read target workpiece 700 from the code reading workstation A4 and transfer it to the vision recognition workstation A5.

[0049] The technical solution of this invention is to set up a first gripping unit 320 that can grip the marked target workpiece 700 from the laser marking station A3 to the code reading station A4, and at the same time, the first gripping unit 320 can grip the read target workpiece 700 from the code reading station A4 to the vision recognition station A5. This allows the first gripping unit 320 to complete the transfer of the target workpiece 700 between the code reading station A4 and the vision recognition station A5 in a single movement. The process is closely connected, reducing the space occupied by the equipment and lowering costs.

[0050] In some embodiments, the spacing between the multiple first gripping units 320 matches the spacing between the multiple workstations. By matching the spacing between the multiple first gripping units 320 with the spacing between the multiple workstations, the present invention facilitates the parallel flow of multiple workpieces between multiple workstations. The first gripping units 320 simultaneously perform material handling, marking, inspection, and sorting actions between different workstations, resulting in a tightly integrated process, improved overall equipment output, reduced equipment space occupancy, and lower costs.

[0051] For example, a first gripping unit 320 grips the target workpiece 700 on the gripping station A2. At the same time, several other first gripping units 320 correspond to the laser marking station A3, the code reading station A4, the vision recognition station A5, and the sorting station, respectively, and grip the target workpiece 700 on the laser marking station A3, the code reading station A4, and the vision recognition station A5. The first gripping unit 320 moves one stroke unit in the first direction S1, transferring the target workpiece 700 on the gripping station A2 to the laser marking station A3, the target workpiece 700 on the laser marking station A3 to the code reading station A4, the target workpiece 700 on the code reading station A4 to the vision recognition station A5, the target workpiece 700 on the vision recognition station A5 to the sorting station, and the good workpieces on the sorting station are transferred to the unloading module 600. Then the first gripping unit 320 moves one stroke unit in the opposite direction along the first direction S1 and repeats the above gripping process, so that the first gripping unit 320 can complete the transfer of the target workpiece 700 between the laser marking station A3, the code reading station A4, the vision recognition station A5, and the sorting station in a single movement stroke. The process is closely connected, reducing the space occupied by the equipment and lowering the cost.

[0052] like Figures 5 to 6 As shown, the laser marking station A3 includes a first rotating platform A31 and a dust removal unit A32. The first rotating platform A31 is provided with a fixture A1 for carrying the target workpiece 700. The first gripping unit 320 can grip the target workpiece 700 from the gripping station A2 and place it onto the fixture A1 of the first rotating platform A31. The first rotating platform A31 can drive the target workpiece 700 to rotate, so that the surface of the target workpiece 700 to be processed faces the laser emission ends of the two laser marking units 410.

[0053] The dust removal unit A32 is used to adsorb dust generated when the laser marking unit 410 marks the target workpiece 700. In some embodiments, the dust removal unit A32 can be a dust extraction cylinder, which is assembled between the laser marking station A3 and the laser marking unit 410. The suction port of the dust extraction cylinder faces the target workpiece 700, and the dust extraction cylinder is connected to an external dust removal system through a pipe.

[0054] The technical solution of this invention establishes a first rotating platform A31 to support and precisely rotate the target workpiece 700, ensuring that its surface to be processed is aligned with the laser emission end, thus avoiding marking misalignment caused by multiple positioning steps. A dust removal unit A32 is also included to absorb dust generated during laser marking of the target workpiece 700 by the laser marking unit 410, facilitating timely removal of marking fumes and improving the cleanliness of the optical lens and working environment, thereby increasing marking accuracy.

[0055] like Figures 5 to 6As shown, the barcode reading station A4 includes a second rotating platform A41, which can rotate the target workpiece 700 so that the surface of the target workpiece 700 containing the marking is facing the barcode reading component 420. The visual recognition station A5 includes a third rotating platform A51, which can rotate the target workpiece 700 so that the surface of the target workpiece 700 containing the marking is facing the visual recognition component 430. The technical solution of the present invention, by setting the second rotating platform A41 and the third rotating platform A51, is used to adjust the posture of the target workpiece 700, ensuring that the marking is completely and clearly presented in the field of view of the barcode reading component 420 and the visual recognition component 430, thereby improving the recognition accuracy.

[0056] In some implementations, a fourth drive unit A7 (such as a servo motor) is also provided below the laser marking station A3, the code reading station A4, and the visual recognition station A5. The fourth drive unit A7 is connected to the control terminal signal and can drive the corresponding rotating platform to achieve stepless speed regulation rotation from 0 to 360°. The four stations—laser marking station A3, code reading station A4, visual recognition station A5, and sorting station—work simultaneously and independently, and after completing their work, they simultaneously proceed to the next action in sequence, improving the overall working efficiency of the machine.

[0057] In some implementations, the reading and recognition module also includes an image text processor, which can perform clarity and integrity detection on the marked graphic code and marked text, generate a good product signal for the target workpiece 700 whose marking meets the preset requirements, and generate a defective product signal for the target workpiece 700 whose marking does not meet the preset requirements, and transmit the good product signal and defective product signal to the sorting module 500 so that the sorting module 500 can screen and pick up defective products.

[0058] In some implementations, the laser marking equipment also includes a data recording module, which is connected to the reading and recognition module. The data recording module can automatically record the marking parameters, test results, yield rate, and defect type statistics for each batch of products, and supports data export and network upload, which helps operators improve their product management capabilities and thus improve work efficiency.

[0059] like Figure 1 as well as Figure 6 As shown, the sorting module 500 is electrically connected to the reading and recognition module. The sorting module 500 includes a second gripping part 510 (such as a gripping robot), a first storage position 520, and a second storage position 530. The station also includes a sorting station A6, which is set corresponding to the sorting module 500. The sorting station A6 is located downstream of the vision recognition station A5. A first gripping part 320 can grip the target workpiece 700 from the vision recognition station A5 and transfer it to the sorting station A6.

[0060] The target workpiece 700 located at sorting station A6 has three possible destinations: the first storage location 520, the second storage location 530, or the unloading module 600. The second gripping unit 510, based on the recognition result of the reading and identification module's identification of the markings on the target workpiece 700, filters out target workpieces 700 containing markings that do not meet preset requirements, and transfers the filtered target workpieces 700 that do not meet preset requirements to the corresponding storage location, while transferring target workpieces 700 containing markings that meet preset requirements to the unloading module 600. For example, the second gripping unit 510 can grip a target workpiece 700 from sorting station A6 containing a graphic code that does not meet preset requirements to the first storage location 520. The second gripping unit 510 can grip a target workpiece 700 from sorting station A6 containing text that does not meet preset requirements to the second storage location 530. The first gripping unit 320 can grip a target workpiece 700 from sorting station A6 containing a graphic code or text that meets preset requirements to the unloading module 600.

[0061] The workstations operate in parallel. Two laser marking units 410 simultaneously mark the target workpiece 700. The barcode reader at the barcode reading station A4 reads the QR code on the target workpiece 700, and the visual recognition camera at the visual recognition station A5 photographs and compares the text on the target workpiece 700. After the target workpiece 700 at the visual recognition station A5 completes its inspection, the first gripping unit 320 of the transport module 300 again performs synchronous gripping and movement. At this time, the target workpiece 700 located at the sorting station A6 (from the visual recognition station A5 in the previous cycle) will be processed according to its inspection results: if it is qualified, it will be gripped by the first gripping unit 320 and placed in the unloading module 600. If the graphic code is defective, the second gripping unit 510 will grab it and move it to the first storage position 520. If the text is defective, it will be grabbed and moved to the second storage position 530. The target workpiece 700 in the unloading module 600 is then manually removed, completing one work cycle.

[0062] The technical solution of this invention sets up a second gripping unit 510, a first storage position 520, and a second storage position 530. The second gripping unit 510 can grip target workpieces 700 that do not meet the preset requirements for graphic codes from the sorting station A6 and move them to the first storage position 520. The first storage position 520 is used to store target workpieces 700 with defective graphic codes. The second gripping unit 510 can also grip target workpieces 700 that do not meet the preset requirements for text from the sorting station A6 and move them to the second storage position 530. The second storage position 530 is used to store target workpieces 700 with defective text. When the target workpieces 700 are transferred to the sorting station A6, according to the judgment result of the reading and recognition module, qualified products are gripped by the first gripping unit 320 of the handling module 300 and moved to the unloading module 600. Target workpieces 700 whose markings do not meet the preset requirements are classified and gripped by the second gripping unit 510 and moved to the corresponding storage position. This ensures the yield of products coming out of the unloading module 600, improves the quality control level, and also facilitates subsequent rework. The simultaneous transfer of good and defective products also helps to further improve overall operational efficiency.

[0063] In some embodiments, the gripper of the second gripping unit 510 (such as a gripping robot) is provided with a pressure sensor on the inside of the gripper. The pressure sensor is connected to the control terminal signal and can monitor the gripping force of the gripper in real time to avoid excessive gripping pressure that could damage the workpiece.

[0064] like Figure 7 As shown, this embodiment of the invention also provides a laser marking method, which marks the target workpiece 700 using a laser marking device according to any of the foregoing embodiments of the invention.

[0065] like Figures 1 to 6 As shown, the laser marking equipment includes a body 100 and a loading module 200, a conveying module 300, a processing module 400, a sorting module 500, and an unloading module 600 disposed on the body 100. The loading module 200 and the unloading module 600 are each equipped with a fixture A1. The fixture A1 of the loading module 200 is used to hold the target workpiece 700 to be processed, and the fixture A1 of the unloading module 600 is used to hold the target workpiece 700 that has already been processed. The conveying module 300 is configured to simultaneously perform the gripping, transferring, and placing actions of multiple target workpieces 700 between the loading module 200, the processing module 400, the sorting module 500, and the unloading module 600. The processing module 400 includes a laser marking module and a reading and recognition module. The laser marking module includes two laser marking units 410, with their laser emission ends set at a 90° angle. The two laser marking units 410 can simultaneously mark different areas of the target workpiece 700. The reading and recognition module is used to read and recognize the marking marks on the target workpiece 700 after being marked by the laser marking module. The sorting module 500 is used to filter and store target workpieces 700 containing marking marks that do not meet preset requirements.

[0066] like Figure 7 As shown, the laser marking method includes steps S100 to S600.

[0067] In step S100, the target workpiece 700 to be processed is placed on the fixture A1 of the loading module 200.

[0068] In step S200, the target workpiece 700 on the fixture A1 of the loading module 200 is picked up and transferred to the processing module 400 by the handling module 300. The processing module 400 includes a laser marking module and a reading and recognition module.

[0069] In step S300, the laser marking module simultaneously marks different areas of the target workpiece 700.

[0070] In step S400, the markings on the target workpiece 700 are read and recognized by the reading and recognition module to determine whether the markings meet the preset requirements and generate the corresponding recognition results.

[0071] In step S500, based on the identification results, the sorting module 500 filters out the target workpieces 700 that do not meet the preset requirements, and transfers the filtered target workpieces 700 that do not meet the preset requirements to the corresponding storage location.

[0072] In step S600, the target workpiece 700 that has been marked and meets the preset requirements is transferred to the fixture A1 of the unloading module 600 by the transport module 300.

[0073] The technical solution of this invention uses a laser marking device to mark a target workpiece 700. The laser marking method includes: placing the target workpiece 700 to be processed on the fixture A1 of the loading module 200; using the transport module 300 to pick up the target workpiece 700 from the fixture A1 of the loading module 200 and transfer it to the processing module 400; using the laser marking module to simultaneously mark different areas of the target workpiece 700; using the reading and recognition module to read and recognize the marking marks on the target workpiece 700, determining whether the marking marks meet preset requirements, and generating corresponding recognition results; based on the recognition results, using the sorting module 500 to sort out those that do not meet the preset requirements. The target workpieces 700 that meet the required marking criteria are selected, and those that do not meet the preset requirements are transferred to the corresponding storage location. The target workpieces 700 that have been marked and meet the preset requirements are transferred to the fixture A1 of the unloading module 600 by the handling module 300. The handling module 300 is configured to simultaneously perform the grabbing, transferring and placing of multiple target workpieces 700 between the loading module 200, processing module 400, sorting module 500 and unloading module 600. The handling module 300 can simultaneously perform material picking, marking, detection and sorting actions, with close process connection, reduced equipment space occupation and reduced cost. By setting up a laser marking module, which includes two laser marking units 410, with their laser emission ends set at a 90° angle, the two laser marking units 410 can simultaneously mark different areas of the target workpiece 700. Since the marking areas of the two laser marking units 410 are orthogonally arranged in space, the synchronous marking helps prevent skewed marking patterns and improves marking accuracy. By setting up a sorting module 500, target workpieces 700 containing markings that do not meet preset requirements can be screened and stored based on the marking results, ensuring the yield of products from the unloading module 600 and improving quality control.

[0074] This invention's technical solution achieves full automation of the marking, inspection, and sorting process through dual-laser synchronous marking, multi-station synchronous operation, and modular integrated design. This reduces manual intervention, labor intensity, and the rate of human error. Through optimized layout and structural design, it balances efficiency, accuracy, and space utilization, while also possessing good versatility and safety.

[0075] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A laser marking device, characterized in that, It includes a machine body and a feeding module, a conveying module, a processing module, a sorting module, and a discharging module disposed on the machine body, wherein, The loading module and the unloading module are respectively equipped with fixtures. The fixture of the loading module is used to carry the target workpiece to be processed, and the fixture of the unloading module is used to carry the target workpiece that has been processed. The conveying module is configured to simultaneously perform multiple target workpiece gripping, transferring and placing actions among the loading module, the processing module, the sorting module and the unloading module; The processing module includes a laser marking module and a reading and recognition module. The laser marking module includes two laser marking units, and the laser emission ends of the two laser marking units are set at a 90° angle. The two laser marking units can simultaneously mark different areas of the target workpiece. The reading and recognition module is used to read and recognize the marking marks on the target workpiece after being marked by the laser marking module; The sorting module is used to screen and store target workpieces containing markings that do not meet preset requirements.

2. The laser marking equipment as described in claim 1, characterized in that, The target workpiece is cylindrical. One of the laser marking units forms a first mark on the target workpiece, and the other laser marking unit forms a second mark on the target workpiece. The first mark and the second mark are combined to form the marking mark. The laser irradiation range of the two laser marking sections covers a continuous area of ​​1 / 2 on the outer surface of the target workpiece.

3. The laser marking equipment as described in claim 2, characterized in that, The transport module includes: A first mounting part is provided with a plurality of first gripping parts arranged at intervals along a first direction. The first gripping parts are used to grip the target workpiece. The first moving component includes a first driving part and a first guide rail, wherein the first driving part is capable of driving the first mounting part to move along a second direction on the first guide rail; The second moving component includes a second driving part and a second guide rail. The second driving part is capable of driving the first moving component to move along a first direction on the second guide rail. The second direction is perpendicular to the first direction.

4. The laser marking equipment as described in claim 3, characterized in that, The processing module includes a second mounting part and multiple workstations, wherein the multiple workstations are arranged sequentially at intervals along a first direction in the second mounting part. At least one of the first gripping units is configured corresponding to at least one workstation under the drive of the second moving component, so that at least one of the first gripping units can grip the target workpiece from one workstation and simultaneously move the target workpiece to the next workstation.

5. The laser marking equipment as described in claim 4, characterized in that, The workstation includes a gripping station, which is located close to the feeding module. The first gripping part is capable of gripping the target workpiece from the fixture of the feeding module to the gripping station.

6. The laser marking equipment as described in claim 5, characterized in that, The workstation also includes a laser marking workstation corresponding to the laser marking module, which is located downstream of the workstation to be picked up. The laser marking station includes: A first rotating platform is provided with a fixture for carrying the target workpiece. The first gripping part can grip the target workpiece from the gripping station and place it onto the fixture of the first rotating platform. The first rotating platform can drive the target workpiece to rotate so that the surface of the target workpiece to be processed faces the laser emission ends of the two laser marking parts. The dust removal unit is used to adsorb the dust generated when the laser marking unit marks the target workpiece.

7. The laser marking equipment as described in claim 6, characterized in that, The reading and recognition module includes a code reading component and a visual recognition component. The marked mark includes a graphic code and text. The code reading component is used to read the graphic code, and the visual recognition component is used to visually recognize and detect the text. The workstation also includes a code reading workstation and a visual recognition workstation arranged sequentially at intervals along a first direction. The code reading component is set corresponding to the code reading workstation, and the visual recognition workstation is set corresponding to the visual recognition component. Both the code reading workstation and the visual recognition workstation are located downstream of the laser marking workstation. The first gripping unit can grip the marked target workpiece from the laser marking station to the code reading station, and at the same time, the first gripping unit can grip the read target workpiece from the code reading station to the vision recognition station.

8. The laser marking equipment as described in claim 7, characterized in that, The code reading station includes a second rotating platform, which can drive the target workpiece to rotate so that the surface of the target workpiece containing the marking is facing the code reading component. The visual recognition station includes a third rotating platform, which can drive the target workpiece to rotate so that the surface of the target workpiece including the marking is facing the visual recognition component.

9. The laser marking equipment as described in claim 7, characterized in that, The sorting module is electrically connected to the reading and identification module. The sorting module includes a second grasping unit, a first storage location, and a second storage location. The workstation also includes a sorting workstation, which is configured corresponding to the sorting module and is located downstream of the vision recognition workstation. The first gripping unit can grip the target workpiece from the vision recognition workstation and transfer it to the sorting workstation. The second gripping unit can grip target workpieces, including those with graphic codes that do not meet preset requirements, from the sorting station and place them in the first storage location; The second gripping unit is capable of gripping target workpieces, including text that does not meet preset requirements, from the sorting station to the second storage location; The first gripping unit can grip the target workpiece, which includes graphic codes and text that meet preset requirements, from the sorting station and transfer it to the unloading module.

10. The laser marking equipment as described in any one of claims 4 to 9, characterized in that, The spacing between the plurality of first gripping units matches the spacing between the plurality of workstations.

11. The laser marking equipment as described in any one of claims 1 to 9, characterized in that, The feeding module, the conveying module, and the unloading module are arranged on the machine body along a first direction. The processing module and the sorting module are located on one side of the transport module.

12. The laser marking equipment as described in any one of claims 1 to 9, characterized in that, Both the feeding module and the unloading module include: The material receiving part, the fixture of the feeding module is set in the material receiving part of the feeding module, and the fixture of the unloading module is set in the material receiving part of the unloading module; The third moving component includes a third driving part and a third guide rail, wherein the third driving part is capable of driving the fixture to move along the third guide rail in a first direction; The first sensor is located in the material receiving part and is used to detect the operation status of manual feeding or picking. The second sensor, located on the material receiving part, is used to detect whether there is a target workpiece on the fixture.

13. A laser marking method, characterized in that, The laser marking method comprises marking a target workpiece using the laser marking equipment as described in any one of claims 1 to 12, wherein the laser marking method includes: The target workpiece to be processed is placed on the fixture of the feeding module; The transport module picks up the target workpiece from the fixture in the loading module and transfers it to the processing module. The laser marking module is used to simultaneously mark different areas of the target workpiece. The reading and recognition module reads and recognizes the markings on the target workpiece, determines whether the markings meet the preset requirements, and generates the corresponding recognition results. Based on the identification results, the sorting module filters out target workpieces with markings that do not meet the preset requirements, and transfers the filtered target workpieces that do not meet the preset requirements to the corresponding storage location. The transport module transfers the marked target workpiece, which meets the preset requirements, to the fixture of the unloading module.

Images