Marking system and marking method based on visual inspection

Abstract

The invention provides a marking system and method based on visual inspection, and the system comprises a conveying device, and the two sides of the conveying device are provided with positioning sensors; the jacking device is arranged in the conveying device; the code scanning device is arranged on one side of the jacking device; the horizontal detector is arranged on one side of the conveying device; the marking device is used for marking the product; the detection device is used for detecting whether the product enters the marking area or not and / or whether appearance scratches exist or not and / or whether marking is complete or not; and the absorption device comprises a smoke collecting shell and an absorber connected to the smoke collecting shell. The technical problems that in an existing production process, the appearance scratch condition and marking integrity of a product depend on manual detection, due to limitation of human vision, visual fatigue is likely to be generated after long-time work, detection errors are inevitably caused, and then the reliability of product quality control is affected are solved.

Description

Technical Field

[0001] The present invention relates to the field of machine processing technology, and in particular to a marking system and a marking method based on visual detection. Background Art

[0002] In the context of modern manufacturing, laser marking technology is one of the largest application areas of laser processing. A laser generator generates a high-energy continuous laser beam. The focused laser acts on the substrate, causing the surface material to melt or even vaporize instantly. The path of the laser on the surface of the material is controlled to form the required graphic mark. Since the marking process is a non-contact process, no mechanical extrusion or mechanical stress is generated, so the processed object will not be damaged. Since the size of the laser after focusing is very small, the heat-affected area is small, and the processing is fine, it can complete some processes that cannot be achieved by conventional methods.

[0003] However, there is at least one of the following problems in the related technology: In the existing production process, products generally rely on manual inspection of appearance scratches and marking integrity before and after marking. However, given the limitations of human vision and the tendency to produce visual fatigue after long hours of work, this will inevitably lead to detection errors and misjudgments, thereby affecting the accuracy and reliability of product quality control. Summary of the invention

[0004] The technical problem solved by the present invention is that in the existing production process, products generally rely on manual inspection of appearance scratches and marking integrity before and after marking. However, given the limitations of human vision and the tendency to produce visual fatigue after long hours of work, this will inevitably lead to detection errors and misjudgments, thereby affecting the accuracy and reliability of product quality control.

[0005] To solve the above problems, the present invention provides a marking system based on visual detection, the marking system comprising: a conveying device, positioning sensors are provided on both sides of the conveying device, the positioning sensors are used to detect whether there are products conveyed to the workstation; a lifting device, the lifting device is arranged in the conveying device, and is used to lift and position the product; a code scanning device, the code scanning device is arranged on one side of the lifting device, and is used to scan and record the product; a horizontal detector, the horizontal detector is arranged on one side of the conveying device, and is used to detect the horizontality of the product; a marking device, the marking device is used to mark the product; a detection device, the detection device is used to detect whether the product enters the marking area and / or whether there are external scratches and / or whether the marking is complete; an absorption device, the absorption device comprises a smoke collecting shell and an absorber connected to the smoke collecting shell, the absorber is used to absorb smoke in the smoke collecting shell; the conveying device, the lifting device, the code scanning device, the marking device and the detection device are all arranged in the smoke collecting area surrounded by the smoke collecting shell.

[0006] Compared with the prior art, the technical effects achieved by adopting the technical scheme are as follows: the present invention integrates a conveying device, a lifting device, a code scanning device, a horizontal detector, a marking device, a detection device and an absorption device to form a marking system integrating detection, marking and smoke absorption; by setting positioning sensors on both sides of the conveying device, the marking system can automatically detect whether a product has arrived at the workstation; by cooperating with the lifting device and the code scanning device, the product arriving at the workstation is scanned and identified, providing accurate information support for subsequent marking operations, thereby realizing the marking requirements of different products; by setting a horizontal detector, the marking surface of the product and the running plane of the marking head are on the same horizontal plane, thereby preventing incomplete marking and ensuring the smooth progress of the marking process and the stability of the marking quality; by detecting the product through the detection device, the manual detection process is eliminated, the labor cost is saved and the detection accuracy is improved; by absorbing the smoke in the smoke collection area through the absorption device, the problem of smoke pollution is solved, the service life of the equipment is extended, and the influence of smoke on the detection device can be prevented, thereby improving the detection accuracy.

[0007] In one example of the present invention, the lifting device includes: a lifting tray, the lifting tray has a relative supporting end and a mounting end, the mounting end is used to carry the product; at least one cylinder, the cylinder is installed to the supporting end, and is used to adjust the height of the lifting tray; at least one positioning member, the positioning member is arranged at the mounting end, and is used to position the product; wherein a positioning hole that is compatible with the positioning member is provided on the product.

[0008] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: by setting up a lifting tray and a cylinder, the height of the product can be flexibly and accurately adjusted, solving the problems of inconvenient height adjustment and insufficient precision; by setting a positioning piece at the mounting end of the lifting tray, the product can be fixed to prevent the product from moving during the marking process, resulting in incomplete marking or marking deviation, thereby improving the marking accuracy and ensuring the stability of the product marking process.

[0009] In one example of the present invention, the marking device includes: a first track, which is fixed relative to the conveying device; a transverse moving part, which is arranged on the first track and reciprocates along the length direction of the first track, and the transverse moving part is provided with a lifting track; a lifting part, which is arranged on the lifting track and reciprocates along the length direction of the lifting track; and a marking head, which is movably connected to one end of the lifting part close to the conveying device and retracts relative to the lifting part.

[0010] Compared with the prior art, the technical effects achieved by adopting the technical scheme are as follows: the traditional marking device has a limited marking range due to the limitations of the structural design and cannot meet the marking needs of some large or irregularly shaped products; the present invention enables the marking head to move in a large range in the horizontal and vertical directions through the structural design of the first track, the transverse moving part, the lifting part and the marking head, thereby expanding the marking range, solving the problem of limited marking range, and being able to adapt to the marking needs of more types of products; the transverse moving part reciprocates along the length direction of the first track, and is provided with a lifting track, the lifting part reciprocates along the length direction of the lifting track, the marking head is movably connected to the lifting part and can perform telescopic movements, and this multi-dimensional movement mode can accurately control the position and movement of the marking head, improve the marking accuracy, and ensure the consistency of marking quality and product appearance.

[0011] In one example of the present invention, the detection device includes: a fixed bracket, which is arranged on one side of the conveying device, and the fixed bracket is provided with a second track, and the second track is arranged along the height direction of the fixed bracket; a camera, which is arranged on the second track and reciprocates along the length direction of the lifting track.

[0012] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the camera of the detection device of the present invention can be flexibly moved on the second track, and the position and angle of the camera can be adjusted as needed to perform comprehensive and detailed inspections on the products, thereby improving the flexibility and adaptability of the inspection and being able to better meet the inspection needs of different products.

[0013] On the other hand, the present invention also provides a marking method based on machine vision, which is applied to the marking system as mentioned above, and the marking method includes: controlling the positioning sensor to detect whether a product has reached a first preset position; if so, controlling the conveying device to stop conveying the product, and controlling the lifting device to lift the product to a first preset height; controlling the scanning device to scan and record the product to obtain first product information; comparing the first product information with the preset product information in the database to obtain marking information; controlling the marking device to perform marking on the product according to the marking information; when the product marking is completed, controlling the detection device to detect the product to determine whether the product marking is successful; if so, controlling the lifting device to drop the product back to the first preset position, and transporting the product to the next workstation through the conveying device.

[0014] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: by controlling the positioning sensor to detect that the product has reached the first preset position, the problem of product positioning and identification is solved, and an accurate starting position is provided for subsequent marking operations; by scanning and recording the product through the scanning device, the corresponding marking information can be obtained according to different products, and adaptation to different products can be achieved; by controlling the detection device to detect the product, it is determined whether the product marking is successful, which solves the problem of inaccurate manual detection and improves the accuracy of detection.

[0015] In one example of the present invention, before controlling the marking device to perform a marking action on the product according to the marking information, the marking method also includes: controlling the horizontal detector to perform a first detection action on the product and obtaining a first detection result; judging whether the product meets the horizontal standard for marking according to the first detection result; if it is judged that the horizontal standard for marking is met, controlling the detection device to perform a second detection action on the product and obtaining a second detection result; judging whether the product enters the marking area and whether the product has appearance damage according to the second detection result; if it is judged that the product has not entered the marking area and / or the product has appearance damage, no marking action is performed.

[0016] Compared with the existing technology, the technical effects achieved by adopting this technical solution are as follows: the horizontal state of the product is judged by the horizontal detector whether it meets the marking requirements, ensuring that the product is in a suitable horizontal state before marking, and improving the quality and reliability of marking; whether the product enters the marking area and whether there is any appearance damage is judged by the second detection result, thereby avoiding marking of products with appearance damage before entering the marking area, causing waste of resources, and thus improving production efficiency.

[0017] In one example of the present invention, determining whether a product meets the horizontal standard for marking is performed based on a first detection result, and further comprising: if it is determined that the product does not meet the horizontal standard for marking, obtaining the lifting information of the cylinder based on the first detection result; controlling the cylinder at the corresponding position to perform lifting based on the lifting information; controlling the horizontal detector to perform a third detection action on the product and obtain a third detection result; determining whether the product meets the horizontal standard for marking based on the third detection result; and if so, performing a marking action on the product.

[0018] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by obtaining the lifting information of the cylinder according to the first detection result, and controlling the cylinder at the corresponding position to lift according to the lifting information, the product is placed in a horizontal state, thereby ensuring the quality and reliability of marking.

[0019] In one example of the present invention, the detection device is controlled to perform a second detection action on the product and obtain a second detection result, including: retrieving a preset height of the camera and a preset image of the product in a database according to the first product information; controlling the camera to move to a preset height and take a picture of the product to obtain a first image; and comparing the first image with the first preset image to obtain a second detection result.

[0020] Compared with the existing technology, the technical effects achieved by adopting this technical solution are as follows: through clear testing standards and accurate testing methods, the accuracy and reliability of the test results are ensured, and various problems of the product in the marking process, such as marking position deviation, appearance damage, etc., can be discovered in time, thereby improving the product quality control level and reducing the production of unqualified products; by retrieving the preset image of the product in the database and the first image for comparison, the consistency and stability of the detection process are ensured, the difference in test results caused by human factors is avoided, and the stability and reliability of product quality are improved.

[0021] In one example of the present invention, before controlling the detection device to detect the product, the marking method also includes: controlling the absorption device to perform a dust suction action; controlling the detection device to determine whether there is residual smoke in the smoke collecting shell; if so, controlling the absorption device to continue to perform the dust suction action; if not, sending a detection signal to the detection device.

[0022] Compared with the prior art, the technical effects achieved by adopting the technical scheme are as follows: during the marking process, if the smoke cannot be handled in time, it will affect the marking quality and the working environment; by controlling the absorption device to perform the dust suction action and judging whether there is residual smoke in the smoke collecting shell, the problem of untimely smoke treatment is solved, ensuring that the smoke is effectively treated during the marking process, and avoiding the influence of smoke on the marking quality and the working environment; sending a marking signal when the smoke is not cleanly treated may lead to a decline in marking quality. Only when there is no residual smoke in the smoke collecting shell is a marking signal sent to the marking device, which solves the problem of inaccurate sending of the marking signal, ensures that the marking process is carried out under good environmental conditions, and improves the quality and reliability of marking; judging the smoke treatment situation through the detection device, and controlling the absorption device to continue working or stop according to the judgment result, realizes effective control of the smoke treatment process, ensures the thoroughness and reliability of the smoke treatment, and improves the stability and safety of equipment operation.

[0023] In one example of the present invention, controlling the detection device to detect the product includes: controlling the camera to take a picture of the product to obtain a second image; comparing the second image with a second preset image to determine whether the product has any external scratches and / or whether the marking is complete; if it is determined that there are external scratches and / or the marking is incomplete, then determining that the product marking is unsuccessful.

[0024] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: after the marking is completed, it is necessary to accurately judge whether the marking is successful, including whether there are scratches on the surface and whether the marking is complete. By controlling the camera to take a picture of the product, a second image is obtained, and the second image is compared with the second preset image, the problem of inaccurate marking result judgment is solved, and it can more accurately judge whether the product has scratches on the surface and whether the marking is complete, thereby improving the accuracy and reliability of the marking result judgment; for products that are not successfully marked, subsequent processing is required in a timely manner, such as re-marking or scrapping; accurate marking result judgment can timely discover products that are not successfully marked, providing timely information support for subsequent processing, avoiding the flow of unqualified products into the next process, and reducing production losses and quality risks.

[0025] After adopting the technical solution of the present invention, the following technical effects can be achieved: (1) The present invention integrates a conveying device, a lifting device, a code scanning device, a level detector, a marking device, a detection device and an absorption device to form a marking system integrating detection, marking and smoke absorption. By setting positioning sensors on both sides of the conveying device, the marking system can automatically detect whether a product has arrived at the workstation. By cooperating with the lifting device and the code scanning device, the product arriving at the workstation is scanned and identified, providing accurate information support for subsequent marking operations, thereby meeting the marking requirements of different products. By setting a level detector, the marking surface of the product and the running plane of the marking head are on the same horizontal plane, thereby preventing incomplete marking and ensuring the smooth progress of the marking process and the stability of the marking quality. The product is detected by the detection device, thereby eliminating the process of manual detection, saving labor costs and improving the accuracy of detection. The smoke in the smoke collection area is absorbed by the absorption device, thereby solving the problem of smoke pollution and extending the service life of the equipment. At the same time, it can also prevent the influence of smoke on the detection device and improve the accuracy of detection. (2) Due to the limitations of structural design, the traditional marking device has a limited marking range and cannot meet the marking needs of some large or irregularly shaped products. The present invention enables the marking head to move in a large range in the horizontal and vertical directions through the structural design of the first track, the transverse moving part, the lifting part and the marking head, thereby expanding the marking range, solving the problem of limited marking range, and being able to meet the marking needs of more types of products. The transverse moving part reciprocates along the length direction of the first track and is provided with a lifting track. The lifting part reciprocates along the length direction of the lifting track. The marking head is movably connected to the lifting part and can perform telescopic movement. This multi-dimensional movement mode can accurately control the position and movement of the marking head, improve the marking accuracy, and ensure the consistency of marking quality and product appearance. (3) By controlling the positioning sensor to detect when the product reaches the first preset position, the problem of product positioning and identification is solved, and an accurate starting position is provided for subsequent marking operations; the product is scanned and recorded by the scanning device, so that the corresponding marking information can be obtained according to different products, and adaptation to different products can be achieved; by controlling the detection device to detect the product, it is determined whether the product marking is successful, which solves the problem of inaccurate manual detection and improves the accuracy of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings to be used in the description of the embodiments. 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 these drawings without creative work. Figure 1 A schematic diagram of the structure of a marking system based on visual detection provided by an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the marking system from another perspective is shown; Figure 3 for Figure 1 A schematic diagram of the structure of the marking system from another perspective is shown; Figure 4 for Figure 1 The schematic diagram of the structure of the conveying device, the lifting device and the code scanning device shown; Figure 5 A flowchart of a marking method based on visual detection provided by an embodiment of the present invention.

[0027] Description of reference numerals: 100. marking system; 10. transport device; 11. positioning sensor; 20. lifting device; 21. lifting tray; 22. cylinder; 23. positioning member; 30. code scanning device; 40. level detector; 50. marking device; 51. first track; 52. transverse moving part; 521. lifting track; 53. lifting part; 54. marking head; 60. detection device; 61. fixing bracket; 62. camera; 70. absorption device; 71. smoke collecting shell; 72. absorber. DETAILED DESCRIPTION

[0028] Embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected, or it can be connected in one piece; it can be a mechanical connection, or it can be an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1 , which is a structural diagram of a marking system based on visual detection provided by an embodiment of the present invention; combined Figures 2 to 4 Specifically, the marking system 100 includes: a conveying device 10, a lifting device 20, a code scanning device 30, a level detector 40, a marking device 50, a detection device 60 and an absorption device 70; positioning sensors 11 are provided on both sides of the conveying device 10, and the positioning sensors 11 are used to detect whether there are products transported to the workstation; the lifting device 20 is provided in the conveying device 10, and is used to lift and position the product; the code scanning device 30 is provided on one side of the lifting device 20, and is used to scan and record the product; the level detector 40 is provided on the conveying device One side of 10 is used to detect the horizontality of the product; the marking device 50 is used to mark the product; the detection device 60 is used to detect whether the product enters the marking area and / or whether there are any scratches on the appearance and / or whether the marking is complete; the absorption device 70 includes a smoke collecting shell 71 and an absorber 72 connected to the smoke collecting shell 71, and the absorber 72 is used to absorb the smoke in the smoke collecting shell 71; the conveying device 10, the lifting device 20, the code scanning device 30, the marking device 50 and the detection device 60 are all arranged in the smoke collecting area enclosed by the smoke collecting shell 71.

[0032] Specifically, the present invention integrates a conveying device 10, a lifting device 20, a code scanning device 30, a level detector 40, a marking device 50, a detection device 60 and an absorption device 70 to form a marking system 100 integrating detection, marking and smoke absorption. By setting positioning sensors 11 on both sides of the conveying device 10, the marking system 100 can automatically detect whether a product has arrived at the workstation. Through the cooperation of the lifting device 20 and the code scanning device 30, the product arriving at the workstation is scanned and identified, providing accurate information support for subsequent marking operations, thereby meeting the marking requirements of different products. By setting up a horizontal detector 40, the marking surface of the product and the running plane of the marking head 54 are at the same horizontal plane, thereby preventing incomplete marking and ensuring the smooth progress of the marking process and the stability of the marking quality; the product is inspected by the detection device 60, thereby eliminating the manual inspection process, saving labor costs and improving the accuracy of the inspection; the smoke in the smoke collection area is absorbed by the absorption device 70, thereby solving the problem of smoke pollution and extending the service life of the equipment. At the same time, it can also prevent the influence of smoke on the detection device 60 and improve the accuracy of the inspection.

[0033] Preferably, the lifting device 20 includes: a lifting tray 21, at least one cylinder 22 and at least one positioning member 23; the lifting tray 21 has a relative supporting end and a mounting end, and the mounting end is used to carry the product; the cylinder 22 is installed to the supporting end, and is used to adjust the height of the positioning tray; the positioning member 23 is arranged at the mounting end, and is used to position the product; wherein, a positioning hole compatible with the positioning member 23 is provided on the product.

[0034] Furthermore, the number of the cylinders 22 is four, which are symmetrically arranged at the supporting end.

[0035] Specifically, by setting up the lifting tray 21 and the cylinder 22, the height of the product can be flexibly and accurately adjusted, solving the problems of inconvenient height adjustment and insufficient precision; by setting a positioning piece 23 at the mounting end of the lifting tray 21, the product can be fixed to prevent the product from moving during the marking process, resulting in incomplete marking or marking deviation, thereby improving the marking accuracy and ensuring the stability of the product marking process.

[0036] Preferably, the marking device 50 includes: a first track 51, a transverse moving part 52, a lifting part 53 and a marking head 54; the first track 51 is fixedly arranged relative to the conveying device 10; the transverse moving part 52 is arranged on the first track 51, and reciprocates along the length direction of the first track 51, and the transverse moving part 52 is provided with a lifting track 521; the lifting part 53 is arranged on the lifting track 521, and reciprocates along the length direction of the lifting track 521; the marking head 54 is movably connected to one end of the lifting part 53 close to the conveying device 10, and performs telescopic movement relative to the lifting part 53.

[0037] Specifically, the traditional marking device 50 has a limited marking range due to the limitations of its structural design and cannot meet the marking needs of some large or irregularly shaped products. The present invention enables the marking head 54 to move in a large range in the horizontal and vertical directions through the structural design of the first track 51, the transverse moving part 52, the lifting part 53 and the marking head 54, thereby expanding the marking range, solving the problem of limited marking range, and being able to adapt to the marking needs of more types of products. The transverse moving part 52 reciprocates along the length direction of the first track 51, and is provided with a lifting track 521. The lifting part 53 reciprocates along the length direction of the lifting track 521. The marking head 54 is movably connected to the lifting part 53 and can perform telescopic movements. This multi-dimensional movement mode can accurately control the position and movement of the marking head 54, improve the marking accuracy, and ensure the consistency of marking quality and product appearance.

[0038] Preferably, the detection device 60 includes a fixed bracket 61 and a camera 62; the fixed bracket 61 is arranged on one side of the conveying device 10, and the fixed bracket 61 is provided with a second track, and the second track is arranged along the height direction of the fixed bracket 61; the camera 62 is arranged on the second track and reciprocates along the length direction of the lifting track 521.

[0039] Specifically, the camera 62 of the detection device 60 can be flexibly moved on the second track, and the position and angle of the camera 62 can be adjusted as needed to perform comprehensive and detailed inspections on the products, thereby improving the flexibility and adaptability of the inspection and being able to better meet the inspection requirements of different products.

[0040] See also Figure 5 The present invention also provides a marking method based on visual detection, which can be applied to the marking system in any of the above examples; the marking method includes: S100: Controlling the positioning sensor to detect whether there is a product reaching a first preset position; S200: If yes, control the conveying device to stop conveying the product, and control the lifting device to lift the product to a first preset height; S300: Controlling the barcode scanning device to scan and record the product to obtain first product information; S400: Compare the first product information with the preset product information in the database to obtain marking information; S500: controlling the marking device to perform marking on the product according to the marking information; S600: After the product marking is completed, the control detection device detects the product to determine whether the product marking is successful; S700: If yes, control the lifting device to drop the product back to the first preset position, and transport the product to the next station through the transport device.

[0041] Furthermore, the first product information includes a product model.

[0042] Specifically, by controlling the positioning sensor to detect that the product has reached the first preset position, the problem of product positioning and identification is solved, and an accurate starting position is provided for subsequent marking operations; the product is scanned and recorded by the scanning device, so that the corresponding marking information can be obtained according to different products, thereby achieving adaptation to different products; by controlling the detection device to detect the product, it is determined whether the product marking is successful, which solves the problem of inaccurate manual detection and improves the accuracy of detection.

[0043] Preferably, before controlling the marking device to perform a marking action on the product according to the marking information, the marking method also includes: controlling the horizontal detector to perform a first detection action on the product and obtaining a first detection result; judging whether the product meets the horizontal standard for marking according to the first detection result; if it is judged that the horizontal standard for marking is met, controlling the detection device to perform a second detection action on the product and obtaining a second detection result; judging whether the product enters the marking area and whether the product has appearance damage according to the second detection result; if it is judged that the product has not entered the marking area and / or the product has appearance damage, no marking action is performed.

[0044] Furthermore, the first detection action includes detecting the horizontality of the product placement, and the first detection result includes the horizontality of the product placement. The second detection action includes taking a photo of the appearance of the product before marking, and the second detection result includes a photo of the appearance of the product before marking.

[0045] Furthermore, if it is determined that the product has not entered the marking area, the movement information of the product is obtained based on the second detection result; the lifting device is controlled to drop the product back to the first preset position; the transportation device is controlled to transport the product to the planned position based on the movement information; and the lifting device is controlled to lift the product to the first preset height.

[0046] Specifically, the level detector is used to determine whether the horizontal state of the product meets the marking requirements, ensuring that the product is in a suitable horizontal state before marking, thereby improving the quality and reliability of marking; the second detection result is used to determine whether the product has entered the marking area and whether there is any appearance damage, thereby avoiding marking of products that have appearance damage before entering the marking area, causing waste of resources, and thus improving production efficiency.

[0047] Preferably, determining whether the product meets the horizontal standard for marking based on the first test result also includes: if it is determined that the product does not meet the horizontal standard for marking, obtaining the lifting information of the cylinder based on the first test result; controlling the cylinder at the corresponding position to perform lifting based on the lifting information; controlling the horizontal detector to perform a third detection action on the product and obtain a third detection result; determining whether the product meets the horizontal standard for marking based on the third detection result; and if so, performing a marking action on the product.

[0048] Further, the lifting information includes the lifting height, the third detection action includes detecting the horizontality of the product placement, and the third detection result includes the horizontality of the product placement.

[0049] Specifically, by acquiring the lifting information of the cylinder according to the first detection result, and controlling the cylinder at the corresponding position to lift according to the lifting information, the product is placed in a horizontal state, thereby ensuring the quality and reliability of marking.

[0050] Preferably, the detection device is controlled to perform a second detection action on the product and obtain a second detection result, including: retrieving a preset height of the camera and a first preset image of the product in a database according to the first product information; controlling the camera to move to a preset height and take a picture of the product to obtain a first image; and comparing the first image with the first preset image to obtain a second detection result.

[0051] Furthermore, the first preset image is a standard image of the product before marking.

[0052] Specifically, through clear testing standards and accurate testing methods, the accuracy and reliability of the test results are ensured, and various problems in the product marking process, such as marking position deviation, appearance damage, etc., can be discovered in time, thereby improving the product quality control level and reducing the production of unqualified products; by retrieving the preset image and the first image of the product in the database for comparison, the consistency and stability of the testing process are ensured, the difference in test results caused by human factors is avoided, and the stability and reliability of product quality are improved.

[0053] Preferably, before controlling the detection device to detect the product, the marking method also includes: controlling the absorption device to perform dust suction; controlling the detection device to determine whether there is residual smoke in the smoke collecting shell; if so, controlling the absorption device to continue to perform the dust suction; if not, sending a detection signal to the detection device.

[0054] Specifically, during the marking process, if the smoke cannot be dealt with in time, it will affect the marking quality and the working environment; by controlling the absorption device to perform the dust suction action and judging whether there is residual smoke in the smoke collecting shell, the problem of untimely smoke treatment is solved, ensuring that the smoke is effectively treated during the marking process, and avoiding the impact of smoke on the marking quality and the working environment; sending a marking signal when the smoke is not cleaned up may lead to a decline in marking quality. Only when there is no residual smoke in the smoke collecting shell is a marking signal sent to the marking device, which solves the problem of inaccurate marking signal sending, ensures that the marking process is carried out under good environmental conditions, and improves the quality and reliability of marking; the smoke treatment situation is judged by the detection device, and the absorption device is controlled to continue working or stop according to the judgment result, thereby realizing effective control of the smoke treatment process, ensuring the thoroughness and reliability of the smoke treatment, and improving the stability and safety of equipment operation.

[0055] Preferably, controlling the detection device to detect the product includes: retrieving a second preset image of the product in the database according to the first product information; controlling the camera to take a picture of the product to obtain a second image; comparing the second image with the second preset image to determine whether the product has any external scratches and / or whether the marking is complete; if it is determined that there are external scratches and / or the marking is incomplete, then determining that the product marking is unsuccessful.

[0056] Furthermore, the second preset image is a standard image of the product after marking.

[0057] Specifically, after the marking is completed, it is necessary to accurately judge whether the marking is successful, including whether there are any scratches on the surface and whether the marking is complete. By controlling the camera to take a picture of the product, a second image is obtained, and the second image is compared with the second preset image, the problem of inaccurate marking result judgment is solved, and it can more accurately judge whether the product has scratches on the surface and whether the marking is complete, which improves the accuracy and reliability of the marking result judgment; for products that are not successfully marked, subsequent processing is required in a timely manner, such as re-marking or scrapping; accurate marking result judgment can timely discover products that are not successfully marked, provide timely information support for subsequent processing, avoid unqualified products from flowing into the next process, and reduce production losses and quality risks.

[0058] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A marking system based on visual inspection, characterized in that: The marking system comprises: A conveying device (10), wherein positioning sensors (11) are provided on both sides of the conveying device (10), and the positioning sensors (11) are used to detect whether a product is conveyed to a workstation; A lifting device (20), the lifting device (20) being arranged in the conveying device (10) and used for lifting and positioning the product; A code scanning device (30), the code scanning device (30) being arranged on one side of the lifting device (20) and being used for scanning and recording the product; a level detector (40), the level detector (40) being arranged on one side of the conveying device (10) and being used to detect the levelness of the product; a marking device (50), the marking device (50) being used to mark the product; A detection device (60), the detection device (60) being used to detect whether the product has entered the marking area and / or whether there are any scratches on the surface and / or whether the marking is complete; An absorption device (70), the absorption device (70) comprising a smoke collecting shell (71) and an absorber (72) connected to the smoke collecting shell (71), the absorber (72) being used to absorb smoke dust in the smoke collecting shell (71); the transport device (10), the lifting device (20), the code scanning device (30), the marking device (50) and the detection device (60) are all arranged in a smoke collecting area enclosed by the smoke collecting shell (71).

2. The marking system according to claim 1, characterized in that: The lifting device (20) comprises: A lifting tray (21), the lifting tray (21) having an opposite supporting end and a mounting end, the mounting end being used to carry the product; at least one cylinder (22), the cylinder (22) being mounted to the support end and being used to adjust the height of the lifting tray (21); at least one positioning member (23), the positioning member (23) being arranged at the mounting end and being used to position the product; Wherein, the product is provided with a positioning hole adapted to the positioning member (23).

3. The marking system according to claim 1, characterized in that: The marking device (50) comprises: A first track (51), the first track (51) being fixedly arranged relative to the conveying device (10); a transverse moving part (52), the transverse moving part (52) being arranged on the first track (51) and performing reciprocating motion along the length direction of the first track (51), and the transverse moving part (52) being provided with a lifting track (521); A lifting part (53), the lifting part (53) being arranged on the lifting track (521) and performing reciprocating motion along the length direction of the lifting track (521); A marking head (54), the marking head (54) being movably connected to one end of the lifting portion (53) close to the conveying device (10) and being capable of telescopic movement relative to the lifting portion (53).

4. The marking system according to claim 1, characterized in that: The detection device (60) comprises: A fixed bracket (61), the fixed bracket (61) being arranged on one side of the conveying device (10), and the fixed bracket (61) being provided with a second track, the second track being arranged along a height direction of the fixed bracket; A camera (62), wherein the camera (62) is arranged on the second track and reciprocates along the length direction of the second track.

5. A marking method based on visual detection, characterized in that: Applied to the marking system according to any one of claims 1 to 4, the marking method comprises: Control the positioning sensor to detect whether there is a product on the workstation that reaches a first preset position; If yes, the conveying device is controlled to stop conveying the product, and the lifting device is controlled to lift the product to a first preset height; Controlling the code scanning device to scan and record the product to obtain first product information; Compare the first product information with the preset product information in the database to obtain marking information; Controlling the marking device to perform marking on the product according to the marking information; After the product marking is completed, the detection device is controlled to detect the product to determine whether the product marking is successful; If so, the lifting device is controlled to drop the product back to the first preset position, and the product is transported to the next station by the transport device.

6. The marking method according to claim 5, characterized in that: Before controlling the marking device to perform marking on the product according to the marking information, the marking method further includes: Controlling the level detector to perform a first detection action on the product and obtain a first detection result; Determining whether the product meets the marking level standard according to the first test result; If it is determined that the marking level standard is met, controlling the detection device to perform a second detection action on the product and obtain a second detection result; Determine whether the product has entered the marking area and whether the product has appearance damage according to the second detection result; If it is determined that the product has not entered the marking area and / or the product has appearance damage, the marking action is not performed.

7. The marking method according to claim 6, characterized in that: The step of judging whether the product meets the marking level standard according to the first detection result also includes: If it is determined that the product does not meet the marking level standard, obtaining the lifting information of the cylinder according to the first detection result; Control the cylinder at the corresponding position to perform lifting according to the lifting information; Controlling the level detector to perform a third detection action on the product and obtain a third detection result; Determining whether the level standard of marking is met according to the third detection result; If so, the marking action is performed on the product.

8. The marking method according to claim 6, characterized in that: The controlling the detection device to perform a second detection action on the product and obtain a second detection result includes: Retrieving a preset height of the camera and a preset first image of the product in the database according to the first product information; Controlling the camera to move to the preset height and taking a picture of the product to obtain a first image; The first image is compared with the first preset image to obtain a second detection result.

9. The marking method according to claim 5, characterized in that: Before controlling the detection device to detect the product, the marking method further includes: Controlling the suction device to perform dust suction; Controlling the detection device to determine whether there is residual smoke in the smoke collecting shell; If yes, controlling the suction device to continue to perform the suction action; If not, a detection signal is sent to the detection device.

10. The marking method according to claim 5, characterized in that: The controlling the detection device to detect the product includes: Retrieving a second preset image of the product in the database according to the first product information; Controlling a camera to take a picture of the product to obtain a second image; Comparing the second image with the second preset image to determine whether the product has any scratches on the surface and / or whether the marking is complete; If it is determined that there are scratches on the surface and / or the marking is determined to be incomplete, it is determined that the marking of the product is unsuccessful.

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