Laser marking system with lamination detection function
By introducing a handling robot and thickness sensor into the laser marking system, the problems of large manual operation errors and overlapping of sheets in the traditional laser marking system have been solved, realizing automated gripping and precise marking of compressor valve plates, thus improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520175069.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-26
AI Technical Summary
Traditional laser marking systems suffer from problems such as large human error, high safety risks, and easy stacking of plates leading to marking errors when processing various thin compressor valve plates of different shapes.
The laser marking system with stacking detection function is adopted, including a marking table, laser marking machine, handling robot, transmission mechanism, workpiece gripper and thickness sensor. The robot automatically grabs and places the workpiece, and the thickness sensor detects the thickness of the workpiece to avoid stacking. Combined with the blowing device, it prevents the workpiece from sticking together and ensures single-piece gripping.
It has enabled automated operation of workpieces, reduced human error and safety hazards, improved production efficiency and product quality, and ensured the accuracy and consistency of marking.
Smart Images
Figure CN223734110U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a laser marking system with stacking detection function, belonging to the field of metal processing technology. Background Technology
[0002] In the manufacturing of mechanical parts, information markings on component surfaces, such as valve plate serial numbers and models, are crucial for quality control, traceability, and product management. With technological advancements, laser marking technology has become widely used due to its high precision, non-contact processing, permanent marking, and resistance to wear.
[0003] However, on the production line for compressor valve plates and covers, there are many different types and shapes of workpieces, with dozens of different types of sheet-like workpieces, each with a very large demand. Traditional laser marking operations usually rely on a system consisting of a worktable equipped with a simple limiting device and a laser marking machine. The placement and removal of workpieces must be done manually by the operator, that is, manually aligning the workpiece and placing it in the limiting device, and then manually removing it after marking is completed.
[0004] Even when robotic arms are used to replace manual workpiece handling, the thickness of compressor valve plates is usually very thin. For example, the thickness of the tongue-type spring valve plate used in a fully enclosed compressor may be as low as 0.16mm to 0.18mm. In addition, the valve plate has a certain degree of stickiness. When the robotic arm grabs the valve plate, multiple pieces are prone to sticking together, resulting in some valve plates not being marked correctly. Utility Model Content
[0005] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.
[0006] The technical solution provided by this utility model is as follows: A laser marking system with stacking detection function includes a marking table, a laser marking machine, and a handling robot. The marking table is located below the laser marking machine, and the laser marking machine is used to perform laser marking on the workpiece placed on the marking table. The handling robot includes a transmission mechanism, a workpiece gripper, and a thickness sensor. The workpiece gripper is mounted on the transmission mechanism, and the transmission mechanism can drive the workpiece gripper to grasp the workpiece and place it on the marking table. The thickness sensor is mounted on the workpiece gripper, and the thickness sensor is used to detect the thickness of the workpiece grasped by the workpiece gripper to determine the number of workpieces grasped.
[0007] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: the handling robot replaces manual operation, realizing automatic gripping, placement and marking of workpieces, which not only improves production efficiency, but also reduces errors and safety hazards caused by manual operation. Through the thickness sensor, the system can intelligently identify and detect whether the workpiece gripper has gripped multiple layers of workpieces (i.e., stacked pieces), thereby effectively preventing marking errors caused by stacked pieces and improving production efficiency and product quality.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the transmission mechanism includes a motor, a PPU drive module, and a guide rail. The motor is driven by the PPU drive module, the upper end of the guide rail is driven by the PPU drive module, and the workpiece gripper is installed at the lower end of the guide rail. The PPU drive module drives the workpiece gripper to achieve lifting, lowering, and translational movements through the guide rail.
[0010] The beneficial effects of adopting the above-mentioned further solution are that PPU (English full name Pick & Place Unit) means industrial intelligence and robot gripping and releasing unit. The PPU drive module has high precision and fast response capability, which ensures the precise position control of the workpiece gripper during lifting and translation. Through the PPU drive module, the workpiece gripper can achieve rapid lifting and translation in a short time, which greatly improves the handling efficiency.
[0011] Furthermore, the thickness sensor is a contact sensor.
[0012] The beneficial effect of adopting the above-mentioned further solution is that the contact sensor can directly contact the surface of the workpiece being measured, thereby measuring the thickness of the workpiece more accurately. Especially when dealing with thin and easily deformable workpieces (such as compressor valve plates), the contact sensor can provide more reliable measurement results, effectively avoiding measurement errors that may be caused by non-contact sensors, and ensuring the accuracy of stack detection.
[0013] Furthermore, the workpiece gripper includes a main support plate and at least one mounting plate, the mounting plate being mounted on the main support plate, one or more suction cups being provided below the mounting plate, and the contact sensor being mounted on at least one of the mounting plates, the probe of the contact sensor being able to contact the surface of the workpiece gripped by the suction cups.
[0014] The beneficial effect of adopting the above-mentioned further solution is that by directly mounting the contact sensor on the mounting plate of the workpiece gripper, the contact sensor can move with the suction cup to directly measure the thickness of the gripped workpiece, thereby improving measurement efficiency and accuracy.
[0015] Furthermore, it includes two mounting plates, namely a first mounting plate and a second mounting plate, which are disposed at both ends of the main support plate, and the contact sensor is provided on the first mounting plate and / or the second mounting plate.
[0016] Furthermore, the marking platform is also equipped with positioning pins.
[0017] The beneficial effect of adopting the above-mentioned further solution is that the positioning pin can ensure that the workpiece is accurately positioned on the marking table, prevent the workpiece from shifting or rotating during the marking process, thereby ensuring the accuracy and consistency of the marking position and improving the marking quality.
[0018] Furthermore, the marking platform is also equipped with a positioning sensor for detecting whether the workpiece is placed in the correct position.
[0019] The beneficial effect of adopting the above-mentioned further solution is that the positioning sensor can monitor in real time whether the workpiece has been correctly placed on the marking table. Once the workpiece is not placed in place or is offset, the system can issue a warning in time or automatically stop the marking operation, preventing marking errors or equipment damage caused by incorrect workpiece position, and improving the safety and reliability of the system.
[0020] Furthermore, it also includes a blowing device, which includes a support and an air nozzle. The air nozzle is mounted on the support and is used to blow air to separate the workpieces from each other when the handling robot grips multiple workpieces.
[0021] The beneficial effect of adopting the above-mentioned further solution is that the blowing device can effectively separate multiple pieces of workpieces that are stuck together when the handling robot grabs the workpiece, preventing the occurrence of stacking, and ensuring that each grab is a single piece of workpiece, thereby improving the accuracy and efficiency of marking. At the same time, this non-contact separation method also avoids damage to the workpiece that may be caused by mechanical contact. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the laser marking system of this utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the handling robot of this utility model;
[0025] Figure 3 This is a schematic diagram of the marking table of this utility model.
[0026] In the diagram, 300 is the marking table; 301 is the positioning pin; and 302 is the positioning sensor.
[0027] 400. Laser marking machine;
[0028] 500. Handling robot; 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;
[0029] 700. Thickness sensor;
[0030] 800. Blowing device; 801. Support; 802. Air nozzle;
[0031] 900, Valve plate. Detailed Implementation
[0032] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).
[0033] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.
[0034] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.
[0035] like Figure 1 - Figure 3As shown, a laser marking system with stack detection function includes a marking table 300, a laser marking machine 400, and a handling robot 500. The marking table 300 is located below the laser marking machine 400, which is used to perform laser marking on workpieces placed on the marking table 300. The handling robot 500 includes a transmission mechanism, a workpiece gripper 540, and a thickness sensor 700. The workpiece gripper 540 is mounted on the transmission mechanism, which can drive the workpiece gripper 540 to grip workpieces and place them on the marking table 300. The thickness sensor 700 is mounted on the workpiece gripper 540 and is used to detect the thickness of the workpieces gripped by the workpiece gripper 540 to determine the number of workpieces gripped.
[0036] The transmission mechanism includes a motor 510, a PPU drive module 520, and a guide rail 530. The motor 510 is driven by the PPU drive module 520, the upper end of the guide rail 530 is driven by the PPU drive module 520, and the workpiece gripper 540 is mounted on the lower end of the guide rail 530. The PPU drive module 520 drives the workpiece gripper 540 to achieve lifting, lowering, and translational movements. The PPU drive module 520 enables the workpiece gripper 540 to achieve rapid lifting, lowering, and translational movements in a short time.
[0037] In this embodiment, the thickness sensor 700 is a contact sensor. The contact sensor can directly contact the surface of the workpiece being measured, thereby measuring the thickness of the workpiece more accurately. Especially when dealing with thin and easily deformable workpieces (such as compressor valve plate 900), the contact sensor can provide more reliable measurement results, effectively avoiding measurement errors that may be caused by non-contact sensors, and ensuring the accuracy of stack detection.
[0038] The workpiece gripper 540 includes a main support plate 541 and at least one mounting plate. The mounting plate is mounted on the main support plate 541, and one or more suction cups 544 are disposed below the mounting plate. The contact sensor is mounted on at least one of the mounting plates, and the probe of the contact sensor can contact the surface of the workpiece gripped by the suction cup 544. By directly mounting the contact sensor on the mounting plate of the workpiece gripper 540, the contact sensor can move with the suction cup 544 to directly measure the thickness of the gripped workpiece, thereby improving measurement efficiency and accuracy.
[0039] In this embodiment, the workpiece gripper 540 includes two mounting plates, namely a first mounting plate 542 and a second mounting plate 543. The first mounting plate 542 and the second mounting plate 543 are disposed at both ends of the main support plate 541, and the contact sensor is provided on the first mounting plate 542 and the second mounting plate 543.
[0040] The marking table 300 is also equipped with a positioning pin 301. The positioning pin 301 can ensure that the workpiece is accurately positioned on the marking table 300, prevent the workpiece from shifting or rotating during the marking process, thereby ensuring the accuracy and consistency of the marking position and improving the marking quality.
[0041] The marking table 300 is also equipped with a positioning sensor 302 for detecting whether the workpiece is placed in the correct position. The positioning sensor 302 can monitor in real time whether the workpiece has been correctly placed on the marking table 300. Once the workpiece is not placed in the correct position or is offset, the system can issue a warning in time or automatically stop the marking operation to prevent marking errors or equipment damage caused by incorrect workpiece position, thereby improving the safety and reliability of the system.
[0042] The laser marking system also includes a blow-separation device 800, which comprises a support 801 and an air nozzle 802. The air nozzle 802 is mounted on the support 801 and is used to separate multiple workpieces by blowing air when the handling robot 500 grasps them. The blow-separation device 800 effectively separates multiple workpieces that are stuck together when the handling robot 500 grasps them, preventing stacking and ensuring that only a single workpiece is grasped each time. This improves the accuracy and efficiency of marking. Furthermore, this non-contact separation method avoids potential damage to the workpieces caused by mechanical contact.
[0043] The working method of the laser marking system of this utility model is as follows: The laser marking system power is turned on, the control system software is started, and a system self-check is performed to ensure that all components (such as motor 510, PPU drive module 520, laser marking machine 400, etc.) are in normal working condition. According to the type, size, and marking requirements of the workpiece to be processed, corresponding marking parameters are set in the control system, including laser power, marking speed, and marking pattern. The transmission mechanism of the handling robot 500 drives the workpiece gripper 540 to move to the workpiece storage area. The workpiece gripper 540 adsorbs the workpiece through the suction cup 544. Simultaneously, the contact thickness sensor 700 installed on the workpiece gripper 540 contacts the workpiece surface to measure the workpiece thickness. Based on the measurement result of the thickness sensor 700, the system determines the number of workpieces gripped. If an abnormal workpiece thickness is detected (e.g., excessive thickness, which may indicate that multiple workpieces have been gripped), the blowing device 800 is activated. The air nozzle 802 is installed through the bracket 801 and blows air onto the workpiece to separate any adhered workpieces, ensuring that only a single workpiece is gripped each time. The robotic arm 500 places the gripped single workpiece onto the positioning pin 301 on the marking table 300, ensuring precise workpiece positioning. At this time, the positioning sensor 302 on the marking table 300 detects whether the workpiece is correctly positioned. If there is any deviation or it is not in place, the system issues a warning or automatically stops subsequent operations. After ensuring the workpiece is correctly positioned, the laser marking machine 400 starts and performs laser marking on the workpiece according to preset parameters and patterns.
[0044] After marking is completed, the handling robot 500 removes the workpiece from the marking table 300 and returns to the workpiece storage area to continue grabbing the next workpiece. The above handling, inspection, separation, positioning and marking steps are repeated until all workpieces are marked.
[0045] This invention utilizes a handling robot 500 to replace manual operation, realizing automatic gripping, placement, and marking of workpieces. This not only improves production efficiency but also reduces errors and safety hazards caused by manual operation. Through the thickness sensor 700, the system can intelligently identify and detect whether the workpiece gripper 540 has gripped multiple layers of workpieces (i.e., stacked pieces), thereby effectively preventing marking errors caused by stacked pieces and improving production efficiency and product quality.
[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A laser marking system with a lamination detection function, characterized by, The device comprises a marking table (300), a laser marking machine (400) and a handling manipulator (500), the marking table (300) is arranged below the laser marking machine (400), the laser marking machine (400) is used for performing laser marking on a workpiece placed on the marking table (300); the handling manipulator (500) comprises a transmission mechanism, a workpiece gripper (540) and a thickness measuring sensor (700), the workpiece gripper (540) is installed on the transmission mechanism, the transmission mechanism can drive the workpiece gripper (540) to grab a workpiece and place it on the marking table (300), and the thickness measuring sensor (700) is installed on the workpiece gripper (540), and the thickness measuring sensor (700) is used for detecting the thickness of the workpiece grabbed by the workpiece gripper (540) to determine the number of grabbed workpieces.
2. The laser marking system with a lamination detection function according to claim 1, characterized in that, The transmission mechanism comprises a motor (510), a PPU driving module (520) and a guide rail (530), the motor (510) is drivingly connected with the PPU driving module (520), the upper end of the guide rail (530) is drivingly connected with the PPU driving module (520), the lower end of the guide rail (530) is installed with the workpiece gripper (540), and the PPU driving module (520) drives the workpiece gripper (540) to realize lifting and translation movement through the guide rail (530).
3. The laser marking system with a lamination detection function according to claim 1 or 2, characterized in that, The thickness measuring sensor (700) is a contact sensor.
4. The laser marking system with a lamination detection function according to claim 3, characterized in that, The workpiece gripper (540) comprises a main support plate (541) and at least one mounting plate, the mounting plate is installed on the main support plate (541), one or more suction cups (544) are arranged below the mounting plate, the contact sensor is installed on at least one mounting plate, and the detection head of the contact sensor can contact the surface of the workpiece grabbed by the suction cup (544).
5. The laser marking system with a lamination detection function according to claim 4, characterized in that, The device comprises two mounting plates, namely a first mounting plate (542) and a second mounting plate (543), the first mounting plate (542) and the second mounting plate (543) are arranged at two ends of the main support plate (541), and the contact sensor is arranged on the first mounting plate (542) and / or the second mounting plate (543).
6. The laser marking system with a lamination detection function according to claim 1, characterized in that, The marking table (300) is further provided with a positioning pin (301).
7. The laser marking system with a lamination detection function according to claim 6, characterized in that, The marking table (300) is further provided with a to-position sensor (302) for detecting whether the workpiece is placed in position.
8. The laser marking system with a lamination detection function according to claim 1, characterized in that, The device further comprises a blowing separation device (800), the blowing separation device (800) comprises a bracket (801) and a blowing nozzle (802), the blowing nozzle (802) is installed on the bracket (801), and the blowing nozzle (802) is used for blowing and separating the workpieces from each other by blowing when the handling manipulator (500) grabs multiple workpieces.