Laser marking equipment and working method

Abstract

The invention relates to laser marking equipment and a working method, and belongs to the technical field of metal machining. The laser marking equipment comprises a rack, a first material stacking mechanism, a second material stacking mechanism, a marking table, a laser marking machine, a carrying manipulator and a layering device, wherein the marking table is arranged below the laser marking machine; the first material stacking mechanism is used for collecting workpieces to be marked, the second material stacking mechanism is used for collecting marked workpieces, the first material stacking mechanism and the second material stacking mechanism are arranged on the peripheral side of the marking table, and the laser marking machine is used for conducting laser marking on the workpieces arranged on the marking table. The carrying manipulator is used for transferring the workpieces on the first stacking mechanism to the marking table and transferring the marked workpieces from the marking table to the second stacking mechanism; the layering device is used for grabbing the spacing pieces and placing the spacing pieces on the tops of the stacked workpieces on the second stacking mechanism. According to the invention, the rapid circulation of the workpiece in the marking process is realized, the production efficiency is improved, and the manual intervention is reduced.

Description

Technical Field

[0001] The invention relates to a laser marking device and a working method, belonging to the technical field of metal processing. Background Art

[0002] In the field of mechanical parts manufacturing, information marking on the surface of components, such as the number and model of the valve plate, is an important part of quality control, tracking and tracing, and product management. With the advancement of technology, laser coding technology has been widely used due to its high precision, non-contact processing, permanent marking and low wear characteristics.

[0003] However, on the production line of compressor valve plates and cover plates, there are many types of workpieces with different shapes. There may be dozens of these sheet workpieces, and the demand for each type is very large. The traditional laser coding operation method usually relies on a system composed of a workbench equipped with a simple limit device and a laser coding machine. The placement and removal of the workpiece must be done manually by the operator, that is, it depends on manual alignment of the workpiece position and manual placement of it in the limit device, and then manual removal after the coding is completed. The manual operation mode has the following problems:

[0004] First of all, manual operation not only has low work efficiency, but also makes it difficult to ensure the consistency of marking positions, and the error rate increases due to operator fatigue.

[0005] Secondly, the thickness of the compressor valve plate is usually very thin. For example, the tongue-type spring leaf valve that may be used in a fully enclosed compressor may have a thickness as low as 0.16mm to 0.18mm. In this case, manual operation can easily damage the valve plate, increasing production costs and scrap rates.

[0006] In addition, in the subsequent packaging process, valve plates are usually packaged into a unit according to a certain quantity. Due to the low thickness and large quantity of valve plates, manual counting and packaging is not only prone to errors, but also extremely inefficient, further affecting the overall efficiency of the production line. Summary of the invention

[0007] The purpose of the present invention is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0008] The technical solution provided by the present invention is as follows: a laser marking device, comprising a frame, a workbench is provided on the frame, a first coding mechanism, a second coding mechanism, a marking table, a laser marking machine, a handling robot and a layering device are provided on the workbench, the marking table is arranged below the laser marking machine; the first coding mechanism is used to collect workpieces to be marked, the second coding mechanism is used to collect workpieces that have completed marking, the first coding mechanism and the second coding mechanism are arranged on the surrounding side of the marking table, and the laser marking machine is used to perform laser marking on the workpieces placed on the marking table; the handling robot is used to transfer the workpieces on the first coding mechanism to the marking table for laser marking operations, and, after the laser marking machine completes marking, transfer the marked workpieces from the marking table to the second coding mechanism to prepare for the next step of packaging processing; the layering device is used to grab spacers and place them on top of the workpieces stacked on the second coding mechanism.

[0009] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: the present invention realizes the rapid flow of workpieces in the marking process through the collection of the first coding mechanism and the collection of the second coding mechanism, as well as the handling of the handling robot, thereby significantly improving production efficiency, reducing manual intervention, and reducing operation difficulty and labor costs; in addition, when the workpieces accumulate to a certain number on the second coding mechanism, the stratification device can grab the spacer and place it on the top of the stacked workpieces, so that when the workpieces continue to be stacked, the workpieces can be easily separated according to the preset number. Therefore, in the subsequent packaging link, there is no need to perform tedious counting operations, and packaging can be carried out directly, which greatly improves the fluency and efficiency of the overall operation.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the first coding mechanism and the second coding mechanism each include a base and a lifting device, the base is arranged above the workbench, the lifting device is installed at the bottom of the workbench, the base is provided with a coding position for stacking workpieces, and the coding positions are each provided with a limiting rod assembly; a through hole is provided below the coding position, and the telescopic rod of the lifting device can pass through the through hole to lift the workpiece located above the through hole.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that the limit rod assembly arranged on the stacking position ensures that the workpiece can be securely positioned and restricted from movement during the stacking process, thereby avoiding handling difficulties or marking errors caused by shaking or misalignment of the workpiece; when the workpiece on the stacking mechanism is grabbed by the handling robot, the lifting device can lift the next workpiece on the workstation from the bottom to a height that is convenient for the handling robot to grab, which not only greatly improves the grabbing efficiency of the handling robot, but also reduces the waiting time of the workpiece during the handling process, thereby further improving the production efficiency of the entire marking process.

[0013] Furthermore, it also includes a driving mechanism, a first platform and a second platform, the workbench is provided with a track, the base is slidably set on the track, the driving mechanism is drivingly connected to the base, the base is provided with a slot, the first platform and the second platform are respectively detachably set on the base through their respective slots, and the limit rod assembly is set on the platform.

[0014] The beneficial effect of adopting the above further scheme is that two carriers (i.e., the first carrier and the second carrier) are arranged on the base, and the two carriers respectively form two independent material stacking positions, and the driving mechanism can drive the base to move along the track and adjust the position. When one of the material stacking positions is moved to the working position of the handling robot to cooperate with the handling robot according to production requirements, at the same time, the other material stacking position can perform the workpiece stacking operation, realizing the parallel operation of the two material stacking positions, thereby improving the work efficiency and shortening the workpiece processing cycle. In addition, the slots arranged on the base and the detachable first and second carriers, the user only needs to select the appropriate carrier according to the needs and fix it on the base through the slots, so that the present invention can adapt to workpieces of different sizes.

[0015] Furthermore, the lifting device includes a screw nut mechanism, a lifting rod and a lifting plate, one end of the lifting rod is connected to the nut of the screw nut mechanism, and the other end of the lifting rod is installed with the lifting plate.

[0016] The beneficial effect of adopting the above further solution is that, driven by the screw nut mechanism, the lifting rod can be raised and lowered smoothly, and the lifting plate, as a component in direct contact with the workpiece, can be adjusted according to the shapes and sizes of different workpieces.

[0017] Furthermore, the handling robot includes a motor, a PPU drive module, a guide rail and a workpiece gripper. The motor is drive-connected to the PPU drive module, the upper end of the guide rail is transmission-connected to the PPU drive module, the workpiece gripper is installed at the lower end of the guide rail, and the PPU drive module drives the workpiece gripper to achieve lifting and translational movements through the guide rail.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that PPU (Pick & Place Unit) means industrial intelligence and robot grasping and releasing unit, and the PPU drive module has high precision and rapid response capabilities, ensuring the precise position control of the workpiece gripper during the lifting and translation process. The PPU drive module enables the workpiece gripper to achieve rapid lifting and translation in a short time, greatly improving the handling efficiency.

[0019] Furthermore, the workpiece gripper includes a main support plate, a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are arranged at both ends of the main support plate, and one or more suction cups are provided below the first mounting plate and the second mounting plate.

[0020] The beneficial effect of adopting the above further scheme is that the workpiece gripper is equipped with two sets of suction cups, and these two sets of suction cups can work simultaneously. When the PPU drive module drives the workpiece gripper to move and grab the workpiece, one set of suction cups can grab the workpiece from the first coding mechanism; at the same time, the other set of suction cups also acts synchronously to grab the workpiece on the marking table. After the workpiece gripper completes the grabbing operation, the PPU drive module continues to drive it to move and perform the placement operation. At this time, one set of suction cups will place the workpiece grabbed from the first coding mechanism on the marking table, while the other set of suction cups will take the workpiece previously grabbed from the marking table and transfer it to the second coding mechanism. The simultaneous operation of moving and placing parts is realized, which improves work efficiency.

[0021] Furthermore, the stratification device includes a support, a material bin, a spacer gripper and a driving module arranged on the workbench, the material bin and the driving module are both arranged on the support, the spacer gripper is installed on the driving module, and the driving module can drive the spacer gripper to perform lifting and translational movements.

[0022] Furthermore, it also includes a thickness measuring sensor, which is installed on the handling robot and is used to detect the thickness of the workpiece grasped by the handling robot.

[0023] The beneficial effect of adopting the above further solution is that it can avoid handling errors caused by workpiece adhesion and prevent the situation of grabbing multiple pieces at one time, thereby improving the accuracy and efficiency of marking.

[0024] Furthermore, it also includes a blowing device, which includes a bracket and a blowing nozzle. The blowing nozzle is installed on the workbench through the bracket. The blowing nozzle is used to blow the workpieces apart by blowing when the handling robot grabs multiple workpieces.

[0025] The beneficial effect of adopting the above further scheme is that when the handling robot grabs multiple workpieces, the blowing device can be quickly started and blow the workpieces apart from each other by blowing air, ensuring that a single workpiece is handled each time, thereby improving the accuracy and efficiency of marking.

[0026] Furthermore, the marking platform is also provided with positioning pins and sensors for detecting whether the workpiece is placed in place.

[0027] The beneficial effect of adopting the above further solution is that the positioning pin can ensure the accurate positioning of the workpiece during the marking process, and the sensor can detect in real time whether the workpiece has been correctly placed.

[0028] A working method of a laser marking device, using the laser marking device, comprises the following steps: initial preparation: the lifting device is in the initial position, the workpiece to be marked is stacked on at least one stacking position of the first stacking mechanism, and at the same time, the second stacking mechanism is ensured to be empty or ready to receive the workpiece that has been marked;

[0029] Workpiece handling and marking: The handling robot transfers the workpiece on the first coding mechanism to the marking table, the laser marking machine performs laser marking on the workpiece on the marking table, and the handling robot transfers the marked workpiece to the second coding mechanism. When the workpiece on the first coding mechanism is transported away, the lifting device is started, so that the lifting plate passes through the through hole to lift the next workpiece to a height that is convenient for the handling robot to grab;

[0030] Workpiece stacking and spacer placement: When the number of workpieces on the second stacking mechanism reaches a preset value, the system controls the stratification device to start, and the spacer gripper of the stratification device grabs a spacer and places the spacer on top of the stacked workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the laser marking device of the present invention;

[0033] Figure 2 It is a three-dimensional structural schematic diagram of the laser marking device of the present invention from another viewing angle;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the first material encoding mechanism and the second material encoding mechanism of the laser marking device of the present invention installed on a workbench;

[0035] Figure 4 For the present invention Figure 3 The main view;

[0036] Figure 5 It is a structural schematic diagram of the first carrier of the present invention moving out of the slot on the base;

[0037] Figure 6 It is a structural schematic diagram of the handling robot of the present invention;

[0038] Figure 7 It is a schematic diagram of the structure of the layering device of the present invention;

[0039] Figure 8 It is a structural schematic diagram of the marking platform of the present invention.

[0040] In the figure:

[0041] 100, rack; 101, workbench;

[0042] 201, first code material mechanism; 202, second code material mechanism; 210, base; 211, first carrier; 212, second carrier; 213, slot; 214, elastic limit pin; 215, limit rod assembly; 216, first limit rod; 217, second limit rod; 218, positioning rod; 220, lifting device; 221, lead screw nut mechanism; 222, lifting rod; 223, lifting plate; 224, vertical rail; 230, drive mechanism; 240, track; 250, position sensor;

[0043] 300, marking table; 301, positioning pin;

[0044] 400. Laser marking machine;

[0045] 500, handling manipulator; 510, motor; 520, PPU drive module; 530, guide rail; 540, workpiece gripper; 541, main support plate; 542, first mounting plate; 543, second mounting plate; 544, suction cup;

[0046] 600, layering device; 610, support; 620, silo; 630, spacer gripper; 641, rodless cylinder; 642, slide cylinder;

[0047] 700, thickness sensor;

[0048] 900. Valve plate. DETAILED DESCRIPTION

[0049] The serial numbers assigned to the components herein, such as "first" and "second", are only used to distinguish the objects described and do not imply any priority in order or specific technical meaning. In addition, the concepts of "connection" and "coupling" mentioned in this application, unless otherwise specified, are deemed to include both direct connection (coupling) and indirect connection (coupling).

[0050] When interpreting the description of this application, it is necessary to clarify that the terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., which indicate positions or positional relationships, are based on the perspectives and layouts shown in the drawings, and are intended to facilitate explanation and simplify the description process, rather than being absolute limitations on the actual positions, construction methods, and operating modes of the devices or components. Therefore, these terms should not be understood as restrictive interpretations of the content of this application.

[0051] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0052] like Figure 1 - Figure 8 As shown, a laser marking device includes a frame 100, a workbench 101 is provided on the frame 100, a first material encoding mechanism 201, a second material encoding mechanism 202, a marking table 300, a laser marking machine 400, a handling robot 500 and a layering device 600 are provided on the workbench 101, and the marking table 300 is arranged below the laser marking machine 400; the first material encoding mechanism 201 is used for preliminarily arranging and collecting workpieces to be marked, the second material encoding mechanism 202 is used for collecting workpieces that have been marked, and the first material encoding mechanism The mechanism 201 and the second coding mechanism 202 are arranged on the peripheral side of the marking table 300, and the laser marking machine 400 is used to perform laser marking on the workpiece placed on the marking table 300; the handling robot 500 is used to transfer the workpiece on the first coding mechanism 201 to the marking table 300, and transfer the workpiece that has been marked from the marking table 300 to the second coding mechanism 202; the layering device 600 is used to grab the spacer and place it on the top of the stacked workpiece on the second coding mechanism 202.

[0053] More specifically, the first coding mechanism 201 and the second coding mechanism 202 both include a base 210 and a lifting device 220, the base 210 is arranged above the workbench 101, the lifting device 220 is installed at the bottom of the workbench 101, the base 210 is provided with a coding position for arranging workpieces, and the coding position is provided with a limit rod assembly 215. In this embodiment, the limit rod assembly 215 includes a first limit rod 216, a second limit rod 217 and a positioning rod 218, the first limit rod 216 and the second limit rod 217 are respectively located on the outside of the annular valve plate 900, and the positioning rod 218 is located on the inside of the annular valve plate 900 to ensure that the workpiece is securely positioned and restricted from moving. Of course, the limit rod assembly 215 can also adopt other structures, and the structure of the limit rod assembly 215 is set according to the shape and position of the workpiece. A through hole is provided below the material stacking position, and the lifting plate 223 on the lifting device 220 can pass through the through hole to lift the workpiece located above the through hole, and the shape of the lifting plate 223 is adapted to the shape of the through hole. When the workpiece on the material stacking mechanism is grabbed by the handling robot 500, the lifting device 220 can lift the next workpiece on the station from below to a height that is convenient for the handling robot 500 to grab, which not only greatly improves the grabbing efficiency of the handling robot 500, but also reduces the waiting time of the workpiece during the handling process.

[0054] The laser marking equipment also includes a driving mechanism 230, a first carrier 211 and a second carrier 212. A track 240 is provided on the workbench 101, and the base 210 is slidably set on the track 240. The driving mechanism 230 is drivingly connected to the base 210. A slot 213 is provided on the base 210. The first carrier 211 and the second carrier 212 are detachably set on the base 210 through their respective slots 213, and the limiting rod assembly 215 is set on the carrier. Two carriers are arranged on the base 210, namely the first carrier 211 and the second carrier 212, and the two carriers respectively form two independent material coding positions. The driving mechanism 230 can drive the base 210 to move and adjust the position along the track 240. When one of the material coding positions is moved to the working position of the handling robot 500 to cooperate with the handling robot 500 according to production requirements, at the same time, the other material coding position can perform the workpiece stacking operation, realizing the parallel operation of the double material coding positions, thereby improving the work efficiency and shortening the workpiece processing cycle. In addition, the slot 213 and the detachable first carrier 211 and the second carrier 212 are arranged on the base 210. The user only needs to select a suitable carrier according to the needs and fix it on the base 210 through the slot 213, so that the present invention can adapt to workpieces of different sizes. The first carrier 211 and the second carrier 212 are also provided with elastic limiting pins 214, and the base 210 is provided with pin holes. When the first carrier 211 and the second carrier 212 are inserted into their respective slots 213, the elastic limiting pins 214 are automatically inserted into the pin holes to prevent the carriers from moving.

[0055] The embodiment of the present invention does not specifically limit the type of the driving mechanism 230, and any one of a pneumatic cylinder, an electric cylinder or a hydraulic cylinder, or any other mechanism capable of driving the base 210 to move, may be used. As long as the driving mechanism 230 has the function of driving the base 210 to move, it shall be deemed to be within the protection scope of the present invention.

[0056] In this embodiment, the lifting device 220 includes a screw nut mechanism 221, a lifting rod 222, a lifting plate 223, a vertical rail 224 and a position sensor 250. One end of the lifting rod 222 is connected to the nut of the screw nut mechanism 221, and the other end of the lifting rod 222 is installed with the lifting plate 223. Driven by the screw nut mechanism 221, the lifting rod 222 can be lifted and lowered smoothly. As a component in direct contact with the workpiece, the lifting plate 223 can be adjusted according to the shape and size of different workpieces. The frame 100 is provided with the vertical rail 224, and the nut of the screw nut mechanism 221 is also slidably installed on the vertical rail 224, ensuring the smooth lifting and lowering of the lifting device 220. At the same time, the position sensor 250 is used to detect the position of the nut of the screw nut mechanism 221.

[0057] The handling robot 500 includes a motor 510, a PPU driving module 520, a guide rail 530 and a workpiece gripper 540. The motor 510 is drivingly connected to the PPU driving module 520. The upper end of the guide rail 530 is drivingly connected to the PPU driving module 520. The workpiece gripper 540 is installed at the lower end of the guide rail 530. The PPU driving module 520 drives the workpiece gripper 540 to achieve lifting and translational movement through the guide rail 530. The PPU driving module 520 has high precision and fast response capabilities, ensuring accurate position control of the workpiece gripper 540 during the lifting and translation process. The PPU driving module 520 enables the workpiece gripper 540 to achieve rapid lifting and translational movement in a short time, greatly improving the handling efficiency.

[0058] The workpiece gripper 540 includes a main support plate 541, a first mounting plate 542 and a second mounting plate 543, wherein the first mounting plate 542 and the second mounting plate 543 are arranged at both ends of the main support plate 541, and one or more suction cups 544 are arranged below the first mounting plate 542 and the second mounting plate 543. The workpiece gripper 540 is equipped with two groups of suction cups 544, which can work simultaneously. When the PPU driving module 520 drives the workpiece gripper 540 to move and grab the workpiece, one group of suction cups 544 can grab the workpiece from the first coding mechanism 201; at the same time, the other group of suction cups 544 also moves synchronously to grab the workpiece on the marking table 300. After the workpiece gripper 540 completes the grabbing operation, the PPU driving module 520 continues to drive it to move and perform the placing operation. At this time, one set of suction cups 544 will place the workpiece grabbed from the first coding mechanism 201 on the marking table 300, while another set of suction cups 544 will take the workpiece previously grabbed from the marking table 300 and transfer it to the second coding mechanism 202. The synchronous operation of moving and placing parts is realized, which improves the work efficiency.

[0059] The layering device 600 includes a support 610, a material bin 620, a spacer gripper 630 and a driving module arranged on the workbench 101, the material bin 620 and the driving module are both arranged on the support 610, the spacer gripper 630 is installed on the driving module, and the driving module can drive the spacer gripper 630 to perform lifting and translational movements.

[0060] In this embodiment, the driving module includes a rodless cylinder 641 and a slide cylinder 642. The spacer gripper 630 is mounted on the slide cylinder 642 and can drive the spacer gripper 630 to move up and down. The slide cylinder 642 is mounted on the moving slider of the rodless cylinder 641 and can move back and forth along the guide rod of the rodless cylinder 641. Of course, the driving module can also adopt other structural forms, as long as the movement accuracy and orientation requirements are met, they should be within the protection scope of the present invention.

[0061] The laser marking device further includes a thickness sensor 700, which is mounted on the handling robot 500 and is used to detect the thickness of the workpiece grasped by the handling robot 500. This can avoid handling errors caused by workpiece adhesion and prevent multiple pieces from being grasped at one time, thereby improving the accuracy and efficiency of marking.

[0062] The embodiment of the present invention does not limit the type of the thickness sensor 700 . The thickness sensor 700 may be an existing contact sensor or a non-contact sensor, as long as it can detect the thickness of the workpiece grasped by the handling robot 500 .

[0063] The laser marking equipment also includes a blowing device, which includes a bracket and a blowing nozzle. The blowing nozzle is installed on the workbench 101 through the bracket. The blowing nozzle is used to blow the workpieces apart from each other by blowing when the handling robot 500 grabs multiple workpieces.

[0064] When the handling robot 500 grabs multiple workpieces, the blowing device can be quickly started and blow the workpieces apart from each other by blowing air, ensuring that a single workpiece is handled each time, thereby improving the accuracy and efficiency of marking.

[0065] The marking platform 300 is also provided with a positioning pin 301 and a sensor for detecting whether the workpiece is placed in place. The positioning pin 301 can ensure the accurate positioning of the workpiece during the marking process, and the sensor can detect in real time whether the workpiece has been correctly placed in place.

[0066] The laser marking device further comprises a counting module, which can accurately record the number of workpieces that have met the standards. Through the counting function of the counting module, the system controls the layering device 600 to grab the spacer and place it on top of the stacked workpieces.

[0067] The working method of the laser marking device of the present invention comprises the following steps:

[0068] Initial preparation: According to the shape and size of the workpiece, select the appropriate first carrier 211 and second carrier 212, and fix them on the base 210 through the slot 213; the lifting device 220 is in the initial position; the workpiece to be marked is neatly stacked on at least one stacking position of the first stacking mechanism 201, and at the same time ensure that the second stacking mechanism 202 is empty or ready to receive the workpiece that has been marked.

[0069] Workpiece handling and marking: Driven by the PPU drive module 520, the handling robot 500 moves to the top of the first encoding mechanism 201; the first group of suction cups 544 of the workpiece gripper 540 grabs a workpiece from the first encoding mechanism 201, and at the same time, the second group of suction cups 544 grabs the marked workpiece from the marking table 300 (if there is a workpiece on the marking table 300); the PPU drive module 520 continues to drive the workpiece gripper 540 to move, and places the workpiece grasped by the first group of suction cups 544 on the marking table 300, and at the same time, the second group of suction cups 544 transfers the marked workpiece to the second encoding mechanism 202; in the process of the workpiece gripper 540 returning to the first encoding mechanism 201, the laser marking machine 400 performs laser marking on the workpiece on the marking table 300. When the workpiece on the first coding mechanism 201 is transported away, the lifting device 220 is started, and the lifting rod 222 is driven to rise through the screw nut mechanism 221, so that the lifting plate 223 passes through the through hole to lift the next workpiece to a height that is convenient for the transport robot 500 to grab.

[0070] After the handling robot 500 grabs the workpiece, the thickness sensor 700 detects the thickness of the workpiece grabbed by the handling robot 500 to prevent multiple pieces from being grabbed at one time due to workpiece adhesion. If the handling robot 500 accidentally grabs multiple pieces of workpieces, the blowing device is quickly activated to blow the workpieces apart from each other through the blowing nozzle to ensure that a single workpiece is handled each time. And when the workpiece is placed on the marking table 300, the positioning pin 301 can ensure the positioning of the workpiece during the marking process. The sensor detects in real time whether the workpiece has been correctly placed in place to ensure the accuracy of laser marking.

[0071] Workpiece stacking and spacer placement:

[0072] When the number of workpieces on the second coding mechanism 202 reaches a preset value, the system controls the layering device 600 to start. Driven by the driving module, the spacer gripper 630 of the layering device 600 grabs a spacer from the bin 620. The spacer gripper 630 moves to the top of the second coding mechanism 202 and places the spacer on top of the stacked workpieces.

[0073] The counting module records the number of workpieces that have been marked and stacked, so that the system can control the start timing of the layering device 600 according to demand.

[0074] The above process is continuously repeated, the first coding mechanism 201 continuously provides new workpieces to be marked, the marking table 300 performs laser marking, and the second coding mechanism 202 collects the workpieces that have been marked and places spacers in a timely manner.

[0075] When all the workpieces at a certain coding position on the first coding mechanism 201 are taken away, the driving mechanism 230 will move the base 210 to move the unloaded coding position away from the pickup position of the handling robot 500, and move another fully loaded coding position to the pickup position of the handling robot 500. At this time, the staff can continue to neatly stack the workpieces to be marked on the unloaded coding position of the first coding mechanism 201. Similarly, when the number of workpieces on a certain coding position of the second coding mechanism 202 reaches the upper limit, the driving mechanism 230 will also move the base 210 to move the unloaded coding position to the stacking position of the handling robot 500 for subsequent workpiece collection and spacer placement. The dual-station parallel operation method not only improves work efficiency, but also effectively shortens the processing cycle of workpieces. When performing material collection and packaging operations, the lifting device 220 of the second coding mechanism 202 can lift the workpiece located on the station from below, thereby facilitating the operator to perform material collection and packaging operations.

[0076] The present invention realizes the rapid flow of workpieces in the marking process through the collection of the first coding mechanism 201 and the collection of the second coding mechanism 202, as well as the transportation of the handling robot 500, thereby significantly improving production efficiency, reducing manual intervention, and reducing operating difficulty and labor costs; in addition, when the workpieces accumulate to a certain number on the second coding mechanism 202, the layering device 600 can grab the spacer and place it on the top of the stacked workpieces, so that when the workpieces continue to be stacked, the workpieces can be easily separated according to the preset number. Therefore, in the subsequent packaging process, there is no need to perform tedious counting operations, and packaging can be carried out directly, which greatly improves the fluency and efficiency of the overall operation.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser marking device, comprising a frame (100), wherein a workbench (101) is provided on the frame (100), characterized in that: The workbench (101) is provided with a first material encoding mechanism (201), a second material encoding mechanism (202), a marking platform (300), a laser marking machine (400), a handling robot (500) and a layering device (600); the marking platform (300) is arranged below the laser marking machine (400); the first material encoding mechanism (201) is used to collect workpieces to be marked, the second material encoding mechanism (202) is used to collect workpieces that have been marked, and the first material encoding mechanism (201) and the second material encoding mechanism (202) are arranged On the peripheral side of the marking table (300), the laser marking machine (400) is used to perform laser marking on the workpiece placed on the marking table (300); the handling robot (500) is used to transfer the workpiece on the first coding mechanism (201) to the marking table (300), and to transfer the workpiece that has been marked from the marking table (300) to the second coding mechanism (202); the layering device (600) is used to grab the spacer and place it on top of the workpiece that has been stacked on the second coding mechanism (202).

2. The laser marking device according to claim 1, characterized in that: The first material stacking mechanism (201) and the second material stacking mechanism (202) both comprise a base (210) and a lifting device (220); the base (210) is arranged above the workbench (101); the lifting device (220) is installed at the bottom of the workbench (101); a material stacking position for stacking workpieces is provided on the base (210); and a limit rod assembly (215) is provided on the material stacking position; a through hole is provided below the material stacking position, and a telescopic rod of the lifting device (220) can pass through the through hole to lift the workpiece located above the through hole.

3. The laser marking device according to claim 2, characterized in that: It also includes a driving mechanism (230), a first carrier (211) and a second carrier (212); a track (240) is provided on the workbench (101); the base (210) is slidably arranged on the track (240); the driving mechanism (230) is drivingly connected to the base (210); a slot (213) is provided on the base (210); the first carrier (211) and the second carrier (212) are detachably arranged on the base (210) through their respective slots (213); and the limiting rod assembly (215) is arranged on the carrier.

4. The laser marking device according to claim 2 or 3, characterized in that: The lifting device (220) comprises a screw nut mechanism (221), a lifting rod (222) and a lifting plate (223); one end of the lifting rod (222) is connected to the nut of the screw nut mechanism (221), and the other end of the lifting rod (222) is mounted on the lifting plate (223).

5. The laser marking device according to claim 1, characterized in that: The handling robot (500) comprises a motor (510), a PPU drive module (520), a guide rail (530) and a workpiece gripper (540); the motor (510) is drive-connected to the PPU drive module (520); the upper end of the guide rail (530) is transmission-connected to the PPU drive module (520); the workpiece gripper (540) is installed at the lower end of the guide rail (530); the PPU drive module (520) drives the workpiece gripper (540) to realize lifting and translational movements through the guide rail (530).

6. The laser marking device according to claim 5, characterized in that: The workpiece gripper (540) comprises a main support plate (541), a first mounting plate (542) and a second mounting plate (543), wherein the first mounting plate (542) and the second mounting plate (543) are arranged at two ends of the main support plate (541), and one or more suction cups (544) are arranged below the first mounting plate (542) and the second mounting plate (543).

7. The laser marking device according to claim 1, characterized in that: The stratification device (600) comprises a support (610), a material bin (620), a spacer gripper (630) and a driving module arranged on the workbench (101); the material bin (620) and the driving module are both arranged on the support (610); the spacer gripper (630) is installed on the driving module; and the driving module can drive the spacer gripper (630) to perform lifting and translational movements.

8. The laser marking device according to claim 1, characterized in that: It also includes a thickness measuring sensor (700), which is installed on the handling robot (500) and is used to detect the thickness of a workpiece grasped by the handling robot (500).

9. The laser marking device according to claim 1, characterized in that: It also includes a blowing device, which includes a bracket and a blowing nozzle. The blowing nozzle is installed on the workbench (101) through the bracket. The blowing nozzle is used to blow the workpieces apart by blowing air when the handling robot (500) grabs multiple workpieces.

10. A working method of a laser marking device, characterized in that: Using the laser marking device according to any one of claims 1 to 9, comprising the following steps: Initial preparation: the lifting device (220) is in the initial position, and the workpiece to be marked is stacked on at least one stacking position of the first stacking mechanism (201), while ensuring that the second stacking mechanism (202) is empty or ready to receive the workpiece that has been marked; Workpiece handling and marking: the handling robot (500) transfers the workpiece on the first coding mechanism (201) to the marking platform (300), the laser marking machine (400) performs laser marking on the workpiece on the marking platform (300), and the handling robot (500) transfers the marked workpiece to the second coding mechanism (202). When the workpiece on the first coding mechanism (201) is transported away, the lifting device (220) is started, so that the lifting plate (223) passes through the through hole to lift the next workpiece to a height that is convenient for the handling robot (500) to grab; Workpiece stacking and spacer placement: When the number of workpieces on the second stacking mechanism (202) reaches a preset value, the system controls the layering device (600) to start, and the spacer gripper (630) of the layering device (600) grabs a spacer and places the spacer on top of the stacked workpieces.

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