Metal mesh strip quality detection device

Abstract

The utility model provides a kind of metal mesh strip quality detection device, belong to metal mesh strip quality inspection technical field, including base, unwinding unit, winding unit, detection module.Detection module includes industrial camera, luminous structure, light transmission disc, drive structure, cleaning structure and matched controller.Luminous structure is set in the just below industrial camera, with the light-collecting cavity of open mouth upwards setting.Light transmission disc rotation is set on base, and rotation axis is along vertical direction setting.Light transmission disc is located in the top of luminous structure.Along the width direction of base, the axis of light transmission disc two sides respectively forms operation area and the detection area corresponding with light-collecting cavity.Drive structure can drive light transmission disc rotation.Cleaning structure is set on base, and located in operation area, and cleaning structure has the cleaning part of contact with light transmission disc.The metal mesh strip quality detection device provided by the utility model can ensure that the light transmission disc part corresponding to detection area maintains clean continuously, to avoid the misjudgment of defect.

Description

Technical Field

[0001] This utility model belongs to the field of metal mesh quality inspection technology, and specifically relates to a metal mesh quality inspection device. Background Technology

[0002] Metal mesh typically undergoes quality inspection after production, which includes checks for defects such as broken wires, holes, misweaving, dimensional inaccuracies, and clogged mesh openings. The detection of these defects is increasingly being replaced by automated optical inspection systems instead of traditional human visual inspection. These systems use high-definition industrial cameras to capture images of the mesh and employ sophisticated image processing algorithms and machine learning models to quickly and accurately identify, classify, and mark the aforementioned defects, significantly improving inspection efficiency.

[0003] In existing technologies, to ensure clear lighting for industrial camera images, a lighting module is typically placed below the metal mesh strip in inspection devices (the metal mesh strip passes between the industrial camera and the lighting module). This lighting module includes a light source and a light-transmitting plate, with the light-transmitting plate located between the light source and the metal mesh strip. However, over time, the surface of the light-transmitting plate below the metal mesh strip easily accumulates dust, metal debris, and other impurities. These impurities can block the light below, affecting the image quality of the visual inspection camera, particularly causing misjudgments of mesh blockage, thus impacting the accuracy of defect detection. Furthermore, the light-transmitting plate cannot be cleaned during equipment operation; cleaning it requires machine shutdown, affecting the continuous operation efficiency of inspection. Utility Model Content

[0004] This utility model provides a metal mesh quality inspection device, which aims to solve the problem of poor practicality caused by the easy occurrence of defect misjudgment in existing metal mesh quality inspection devices.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a metal mesh quality inspection device is provided, including a base, on which an unwinding unit and a winding unit are spaced apart; it also includes a detection module disposed between the unwinding unit and the winding unit; the spacing direction between the unwinding unit and the winding unit is set as a first direction; The detection module includes: Industrial camera with a downward-facing shooting end; The light-emitting structure is located directly below the industrial camera and has an upward-facing focusing cavity; A transparent optical disc is rotatably mounted on the base, with its rotation axis set along the vertical direction; the transparent optical disc is located at the top of the light-emitting structure; a plane passing through the rotation axis of the transparent optical disc along a first direction and parallel to the rotation axis is defined as the intermediate plane, and an operation area and a detection area corresponding to the focusing cavity are respectively formed on both sides of the intermediate plane; A driving structure is used to drive the transparent optical disc to rotate; A cleaning structure is provided on the base and located in the operating area, the cleaning structure having a cleaning part that contacts the transparent optical disc; Matching controller; As the transparent optical disc rotates, impurities generated in the detection area are carried to the operation area and cleaned by the cleaning unit.

[0006] In one possible implementation, the light-emitting structure includes: A light-concentrating cover is fixed on the base and located below the transparent optical disc; the inner cavity of the light-concentrating cover is the light-concentrating cavity; The light-emitting element is located at the bottom of the focusing cavity.

[0007] In one possible implementation, the focusing cavity is a cuboid cavity.

[0008] In one possible implementation, the metal mesh quality inspection device further includes a support cylinder, which is fixed on the base and coaxially arranged with the transparent optical disc. The support cylinder is located below the transparent optical disc and has an annular platform at its top corresponding to the outer edge of the transparent optical disc. An annular groove is provided on the annular platform, and a plurality of ball bearings that can roll and contact the transparent optical disc are provided in the annular groove. Both the light-emitting structure and the driving structure are located in the support cylinder.

[0009] In one possible implementation, the driving structure includes: The speed reducer is fixed on the base and has a power end that is coaxially connected to the shaft of the transparent optical disc; The servo motor is fixed on the reducer and is poweredly connected to the input end of the reducer.

[0010] In one possible implementation, the cleaning structure includes: A first fixing rod is located above the transparent optical disc. One end of the first fixing rod is fixed to the base, and the other end extends horizontally out of the transparent optical disc. A sponge pad is fixed to the bottom end of the first fixing rod and abuts against the transparent optical disc; The first fixing rod has a cavity with one end open, and along the extension direction of the first fixing rod, the bottom end of the first fixing rod is provided with a plurality of openings that communicate with the cavity; the cavity is connected to an external water supply module.

[0011] In one possible implementation, the cleaning structure further includes: The second fixing rod is located above the transparent optical disc. One end of the second fixing rod is fixed to the base, and the other end extends horizontally out of the transparent optical disc. The second fixing rod is located behind the first fixing rod along the rotation direction of the transparent optical disc. A wiping strip is fixed to the bottom end of the second fixing rod and abuts against the transparent disc, used to wipe away residual water stains on the transparent disc.

[0012] In one possible implementation, the detection module further includes: Two baffles are provided, both of which are located in the detection area and above the transparent optical disc; each baffle is arranged along the first direction and is connected to the base; a detection channel is formed between the two baffles for the metal mesh to pass through and which corresponds to the industrial camera.

[0013] In one possible implementation, the outer edge of the transparent optical disc is provided with a downwardly angled annular fold.

[0014] The metal mesh quality inspection device provided in this implementation, compared with existing technologies, features an unwinding unit, a winding unit, and a detection module located between the unwinding and winding units. This ensures continuous inspection of the metal mesh, thereby guaranteeing inspection efficiency. In the detection module, the corresponding light-emitting structure on the light-transmitting disc ensures a uniform light-transmitting surface on the disc. The metal mesh passes between this surface and the industrial camera, ensuring effective camera imaging and thus, accurate inspection. The driving structure rotates the light-transmitting disc, carrying impurities from the inspection area to the operating area, where a cleaning structure effectively removes them. This ensures the light-transmitting disc portion corresponding to the inspection area remains clean and allows for continuous inspection of the metal mesh, effectively preventing misjudgments of defects and demonstrating strong practicality. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the metal mesh quality inspection device provided in this embodiment of the utility model; Figure 2 Schematic diagram of the detection module structure of the metal mesh quality detection device provided in this embodiment of the utility model Figure 1 ; Figure 3 Schematic diagram of the detection module structure of the metal mesh quality detection device provided in this embodiment of the utility model Figure 2 ; Figure 4 for Figure 1 An enlarged structural diagram of point A of the metal mesh quality inspection device provided in the embodiment; Figure 5 for Figure 2Enlarged structural diagram of section B of the metal mesh quality inspection device provided in the embodiment; Figure 6 A schematic diagram showing the positional relationship between the light-emitting structure, the transparent optical disc, and the industrial camera in the detection module of the metal mesh quality inspection device provided in this embodiment of the utility model (the light-emitting structure is in cross-section).

[0016] Explanation of reference numerals in the attached figures: 10. Base frame; 11. Gantry frame; 20. Unwinding unit; 30. Rewinding unit; 40. Detection module; 41. Industrial camera; 42. Light-emitting structure; 421. Condenser; 422. Light-emitting body; 43. Transparent disc; 431. Annular folded edge; 44. Drive structure; 441. Reducer; 442. Servo motor; 45. Cleaning structure; 451. First fixing rod; 452. Sponge pad; 453. Cavity; 454. Second fixing rod; 455. Wiping strip; 46. Baffle; 50. Support cylinder; 51. Ball bearing; 60. Metal mesh strips. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Please refer to the following: Figures 1 to 3 The metal mesh quality inspection device provided by this utility model will now be described. The metal mesh quality inspection device includes a base 10, on which an unwinding unit 20 and a winding unit 30 are spaced apart. It also includes a detection module 40 disposed between the unwinding unit 20 and the winding unit 30. The direction of the interval between the unwinding unit 20 and the winding unit 30 is defined as a first direction.

[0019] The detection module 40 includes an industrial camera 41, a light-emitting structure 42, a transparent optical disc 43, a driving structure 44, a cleaning structure 45, and a matching controller. The industrial camera 41 has a downward-facing imaging end. The light-emitting structure 42 is positioned directly below the industrial camera 41 and has an upward-facing focusing cavity. The transparent optical disc 43 is rotatably mounted on the base 10, with its rotation axis aligned vertically. The transparent optical disc 43 is located at the top of the light-emitting structure 42. A plane passing through the rotation axis of the transparent optical disc 43 along a first direction and parallel to this axis is defined as the intermediate plane. An operating area and a detection area corresponding to the focusing cavity are formed on either side of this intermediate plane. The driving structure 44 can drive the transparent optical disc 43 to rotate. The cleaning structure 45 is mounted on the base 10 and located in the operating area. The cleaning structure 45 has a cleaning part that contacts the transparent optical disc 43.

[0020] Specifically, as the transparent disc 43 rotates, impurities generated in the detection area are carried to the operation area and cleaned by the cleaning department.

[0021] Compared with the prior art, the metal mesh quality inspection device provided in this embodiment, with its unwinding unit 20, winding unit 30, and inspection module 40 located between the unwinding unit 20 and winding unit 30, ensures continuous inspection of the metal mesh 60, thereby guaranteeing inspection efficiency. In the inspection module 40, the transparent disc 43 corresponds to the light-emitting structure 42, ensuring a uniform light-transmitting surface of the optical fiber on the transparent disc 43. The metal mesh 60 passes between the light-transmitting surface and the industrial camera 41, ensuring the imaging effect of the industrial camera 41, and thus guaranteeing the inspection effect. The driving structure 44 rotates the transparent disc 43, carrying impurities falling on the transparent disc 43 in the inspection area to the operating area, where they are cleaned by the cleaning structure 45. This effectively ensures that the portion of the transparent disc 43 corresponding to the inspection area remains clean and can adapt to continuous inspection of the metal mesh 60, effectively avoiding misjudgments of defects, and is highly practical.

[0022] It should be noted that the detection area and the operation area are divided by a central plane. Half of the transparent optical disc 43 falls on one side of the central plane, and the other half falls on the other side. Furthermore, as the transparent optical disc 43 rotates, the portion of the disc falling into the detection area or the operation area continuously changes, effectively ensuring that impurities on the disc 43 can be cleaned during continuous detection without affecting the process or requiring machine downtime.

[0023] In this embodiment, both the unwinding unit 20 and the winding unit 30 can employ existing technologies, namely, both the unwinding unit 20 and the winding unit 30 can be equipped with a rotating shaft, and the rotating shaft can be equipped with a drive. In addition, in order to ensure the horizontality of the metal mesh strip 60 passing through the detection area, guide rollers can be provided on the unwinding unit 20 and the winding unit 30 respectively. The above technologies are well known to those skilled in the art and will not be described in detail here.

[0024] In this embodiment, the industrial camera 41 can employ existing technology. Specifically, the controller includes a database. High-definition images captured visually form data, which the controller compares with data in the database to determine the type and location of defects. Visual inspection is relatively common in the field of metal mesh; the specific working principle and processing algorithm will not be elaborated here. In this solution, the industrial camera 41 is also equipped with a downward-projecting light source to prevent dark areas from appearing on the upper surface of the metal mesh strip 60 due to excessive brightness from below during shooting.

[0025] Regarding the installation of the industrial camera 41, a boom can be installed on the base 10, as detailed in the following reference. Figure 2 and Figure 3 .

[0026] In some embodiments, the light-emitting structure 42 described above can be as follows: Figure 3 and Figure 6 The structure shown. See figure. Figure 3 and Figure 6 The light-emitting structure 42 includes a light-concentrating cover 421 and a light-emitting element 422. The light-concentrating cover 421 is fixed on the base 10 and located below the transparent optical disc 43. The inner cavity of the light-concentrating cover 421 is a light-concentrating cavity. The light-emitting element 422 is disposed at the bottom of the light-concentrating cavity.

[0027] The light-concentrating cover 421 can further ensure the uniformity of the light projected onto the transparent optical disc 43, thereby ensuring the detection effect. At the same time, this structure can also provide protection to prevent impurities from appearing between the light-emitting body 422 and the transparent optical disc 43, thereby ensuring the detection effect.

[0028] The light emitter can be an LED light strip, and the inner wall of the light-concentrating cover 421 can be coated with a reflective coating. The corresponding transparent disc 43 can be made of white resin.

[0029] In some embodiments, the aforementioned focusing cavity may employ, as follows: Figure 6 The structure shown. See also Figure 6 The focusing cavity is a cuboid cavity, which ensures that a rectangular light-transmitting surface is formed on the light-transmitting optical disc 43, thereby ensuring its compatibility with the industrial camera 41. In addition, the cuboid cavity can be formed by a cuboid focusing mask 421, which facilitates manufacturing.

[0030] In some embodiments, the above-mentioned metal mesh quality inspection device can employ, for example... Figure 2and Figure 3 The structure shown. See also Figure 2 and Figure 3 The metal mesh quality inspection device also includes a support cylinder 50, which is fixed on the base 10 and coaxially arranged with the transparent optical disc 43. The support cylinder 50 is located below the transparent optical disc 43, and its top end has an annular platform corresponding to the outer edge of the transparent optical disc 43. The annular platform is provided with an annular groove, and a number of ball bearings 51 that can roll and contact the transparent optical disc 43 are provided in the annular groove.

[0031] The light-emitting structure 42 and the driving structure 44 are both located in the support cylinder 50.

[0032] The support cylinder 50 can protect the light-emitting structure 42 and the driving structure 44. At the same time, it can also support the transparent optical disc 43 through the formed annular platform and several balls 51 located on the annular platform. In addition, the balls 51 support the outer edge of the transparent optical disc 43 and make rolling contact with the transparent optical disc 43, which can effectively ensure the levelness of the transparent optical disc 43, thereby ensuring the detection effect.

[0033] In some embodiments, the driving structure 44 described above can be as follows: Figure 1 and Figure 2 The structure shown. See also Figure 1 and Figure 2 The drive structure 44 includes a reducer 441 and a servo motor 442. The reducer 441 is fixed on the base 10 and has a power end coaxially connected to the rotating shaft of the transparent disc 43. The servo motor 442 is fixed on the reducer 441 and is poweredly connected to the input end of the reducer 441. The reducer 441 can be a gear reducer 441 or a worm gear reducer 441. Specifically, the combination of the reducer 441 and the servo motor 442 is connected to the rotating shaft of the transparent disc 43, and can drive the transparent disc 43 to rotate continuously or intermittently under the command of the controller, and the rotation speed is adjustable.

[0034] Regarding the transparent optical disc 43, it can ensure that the disc body and the rotating shaft coaxially connected to the disc body are rotatably connected to the base 10, and the axis is set along the vertical direction.

[0035] In some embodiments, the cleaning structure 45 described above may employ, for example... Figure 2 , Figure 3 and Figure 5 The structure shown. See also Figure 2 , Figure 3 and Figure 5The cleaning structure 45 includes a first fixing rod 451 and a sponge pad 452. The first fixing rod 451 is located above the transparent optical disc 43, with one end fixed to the base 10 and the other end extending horizontally out of the transparent optical disc 43. The sponge pad 452 is fixed to the bottom end of the first fixing rod 451, and may be adhesive, with the bottom end of the sponge pad 452 abutting against the transparent optical disc 43.

[0036] The first fixing rod 451 has a cavity 453 with one end open, and along the extending direction of the first fixing rod 451, the bottom end of the first fixing rod 451 is provided with a plurality of openings that connect to the cavity 453 at intervals. The cavity 453 is connected to an external water supply module.

[0037] In this example, to facilitate the connection of the first fixing rod 451, a gantry frame 11 can be installed on the base 10. The crossbeam at the top of the gantry frame 11 is located above the transparent optical disc 43 and can be rotatably connected to the shaft of the transparent optical disc 43. One end of the first fixing rod 451 can be fixed to the gantry frame 11, specifically by bolt connection. The first fixing rod 451 has a cavity 453 inside, which can ensure connection to an external water supply module through a flexible tube, thereby ensuring that clean water can be provided to the sponge pad 452, reducing the friction between the sponge pad 452 and the transparent optical disc 43, and also ensuring the removal of stains and impurities on the surface of the transparent optical disc 43. This structure effectively ensures that impurities appearing in the detection area are cleaned during the continuous detection of the metal mesh strip 60, ensuring the detection effect.

[0038] In addition, the part of the first fixing rod 451 that is connected to the sponge pad 452 can be an arc-shaped structure.

[0039] In this embodiment, the water supply module may include a water tank containing water or cleaning fluid. The water tank is connected to one end of the cavity 453 via a flexible pipeline, and a delivery pump is installed on the flexible pipeline. The delivery pump is connected to the controller. The specific single water supply volume should not be too large. The specific water supply volume can be adjusted by those skilled in the art based on actual testing, and will not be elaborated here.

[0040] In some embodiments, the cleaning structure 45 described above may employ, for example... Figure 2 , Figure 3 and Figure 5 The structure shown. See also Figure 2 , Figure 3 and Figure 5The cleaning structure 45 also includes a second fixing rod 454 and a wiping strip 455. The second fixing rod 454 is located above the transparent disc 43, with one end fixed to the base 10 and the other end extending horizontally out of the transparent disc 43. The second fixing rod 454 is located behind the first fixing rod 451 along the rotation direction of the transparent disc 43. The wiping strip 455 is fixed to the bottom end of the second fixing rod 454 and abuts against the transparent disc 43, enabling it to wipe away residual water stains on the transparent disc 43.

[0041] When the sponge pad 452 cleans the transparent disc 43, some cleaning water may remain on the transparent disc 43. The wiping strip 455 on the second fixing rod 454 can ensure that this part of the residual cleaning water is wiped away. The wiping strip 455 can be made of polyvinyl alcohol sponge material, which has strong water absorption.

[0042] In this embodiment, one end of the second fixing rod 454 can also be fixed to the gantry frame 11, which can be done by bolt connection. In addition, the part where the second fixing rod 454 connects to the wiping strip 455 can be an arc-shaped structure.

[0043] In some embodiments, the detection module 40 described above may employ, for example... Figure 2 and Figure 3 The structure shown. See also Figure 2 and Figure 3 The detection module 40 also includes two baffles 46, both located in the detection area and above the transparent optical disc 43. Each baffle 46 is arranged along a first direction and is connected to the base 10. A detection channel is formed between the two baffles 46, through which the metal mesh strip 60 passes and corresponds to the industrial camera 41.

[0044] The baffle 46 can block the metal mesh strip 60 on both sides in the width direction to prevent external light from affecting the detection, and at the same time, it can also form a protection for the metal mesh strip 60.

[0045] In some embodiments, the aforementioned transparent optical disc 43 may employ, as follows: Figure 5 The structure shown. See also Figure 5 The outer edge of the transparent disc 43 is provided with a downwardly angled annular folded edge 431.

[0046] During the cleaning process, impurities or liquid stains may be discharged along the edge of the transparent disc 43. At this time, the annular folded edge 431 can guide these impurities or stains to prevent them from flowing into the lower surface of the transparent disc 43.

[0047] Correspondingly, a receiving cylinder can be installed at the corresponding position on the outer end of the sponge pad 452 to collect the discharged impurities and liquid stains.

[0048] 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 and improvements 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 metal mesh quality inspection device, comprising a base, wherein an unwinding unit and a winding unit are spaced apart on the base; characterized in that, It also includes a detection module disposed between the unwinding unit and the winding unit; The spacing direction between the unwinding unit and the winding unit is defined as a first direction; The detection module includes: Industrial camera with a downward-facing shooting end; The light-emitting structure is located directly below the industrial camera and has an upward-facing focusing cavity; A transparent optical disc is rotatably mounted on the base, with its rotation axis set along the vertical direction; the transparent optical disc is located at the top of the light-emitting structure; a plane passing through the rotation axis of the transparent optical disc along a first direction and parallel to the rotation axis is defined as the intermediate plane, and an operation area and a detection area corresponding to the focusing cavity are respectively formed on both sides of the intermediate plane; A driving structure is used to drive the transparent optical disc to rotate; A cleaning structure is provided on the base and located in the operating area, the cleaning structure having a cleaning part that contacts the transparent optical disc; Matching controller; As the transparent optical disc rotates, impurities generated in the detection area are carried to the operation area and cleaned by the cleaning unit.

2. The metal mesh quality inspection device as described in claim 1, characterized in that, The light-emitting structure includes: A light-concentrating cover is fixed on the base and located below the transparent optical disc; the inner cavity of the light-concentrating cover is the light-concentrating cavity; The light emitter is located at the bottom of the focusing cavity.

3. The metal mesh quality inspection device as described in claim 2, characterized in that, The focusing cavity is a rectangular cavity.

4. The metal mesh quality inspection device as described in claim 1, characterized in that, The metal mesh quality inspection device also includes a support cylinder, which is fixed on the base and coaxially arranged with the transparent optical disc. The support cylinder is located below the transparent optical disc and has an annular platform at its top corresponding to the outer edge of the transparent optical disc. An annular groove is provided on the annular platform, and a plurality of ball bearings that can roll and contact the transparent optical disc are provided in the annular groove. Both the light-emitting structure and the driving structure are located in the support cylinder.

5. The metal mesh quality inspection device as described in claim 1, characterized in that, The driving structure includes: The speed reducer is fixed on the base and has a power end that is coaxially connected to the shaft of the transparent optical disc; The servo motor is fixed on the reducer and is poweredly connected to the input end of the reducer.

6. The metal mesh quality inspection device as described in claim 1, characterized in that, The cleaning structure includes: A first fixing rod is located above the transparent optical disc. One end of the first fixing rod is fixed to the base, and the other end extends horizontally out of the transparent optical disc. A sponge pad is fixed to the bottom end of the first fixing rod and abuts against the transparent optical disc; The first fixing rod has a cavity with one end open, and along the extension direction of the first fixing rod, the bottom end of the first fixing rod is provided with a plurality of openings that communicate with the cavity; the cavity is connected to an external water supply module.

7. The metal mesh quality inspection device as described in claim 6, characterized in that, The cleaning structure also includes: The second fixing rod is located above the transparent optical disc. One end of the second fixing rod is fixed to the base, and the other end extends horizontally out of the transparent optical disc. The second fixing rod is located behind the first fixing rod along the rotation direction of the transparent optical disc. A wiping strip is fixed to the bottom end of the second fixing rod and abuts against the transparent disc, used to wipe away residual water stains on the transparent disc.

8. The metal mesh quality inspection device as described in claim 1, characterized in that, The detection module also includes: Two baffles are provided, both of which are located in the detection area and above the transparent optical disc; each baffle is arranged along the first direction and is connected to the base; a detection channel is formed between the two baffles for the metal mesh to pass through and which corresponds to the industrial camera.

9. The metal mesh quality inspection device as described in claim 1, characterized in that, The outer edge of the transparent optical disc is provided with a downward-sloping annular fold.

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