Adhesive film defect detection device

Abstract

The utility model discloses a glue film defect detection device. The glue film defect detection device comprises a rack module, an imaging module, an illumination module and a motion platform module, wherein the rack module comprises a plurality of guide rails; the imaging module comprises a Z-axis movement mechanism and an imaging camera; the top of the rack module is in sliding connection with a guide rail at the top of the rack module; the lighting module is located below the imaging module and comprises a first lighting module and a second lighting module, the first lighting module is in sliding connection with a guide rail in the rack module, and the second lighting module and the motion platform module move synchronously; and the motion platform module comprises a motion platform, an X-axis motion mechanism and a Y-axis motion mechanism, and is arranged in the rack module and positioned below the illumination module and the imaging module. The rubber film defect detection device can be suitable for defect detection of various models of rubber films, and realizes rubber film defect detection from 10 microns to meter.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of industrial automation detection device more specifically, relate to a kind of adhesive film defect detection device. BACKGROUND

[0002] With the rapid development and popularization of industrial automation, modern industrial production is gradually moving towards high efficiency and high precision. In the packaging and printing industry, adhesive film (plastic plate) as a carrier for graphic printing, its quality directly affects the printing effect of packaging materials. Once the adhesive film has defects such as scratches, bubbles and stains, it will cause quality problems in the printed matter, and thus cause huge economic losses to the enterprise. Therefore, ensuring the quality of adhesive film (plastic plate) is crucial to ensuring the quality of packaging and printing products.

[0003] Currently, the defect detection of domestic adhesive film (plastic plate) is mainly completed by manual work. Although manual detection method can detect some defects to some extent, the detection efficiency is low and cannot meet the requirements of high-speed production line for detection speed. Secondly, long-time operation can cause operator fatigue, leading to missed detection and false detection. Manual detection is not conducive to the realization of production automation and is difficult to meet the development trend of future industrial production. Realizing the automatic defect detection of adhesive film (plastic plate) is of great significance to improve production efficiency, reduce production cost and ensure product quality. Automatic detection can greatly improve the detection speed, meet the requirements of high-speed production line for detection speed, reduce the influence of human factors on detection results, improve the accuracy and reliability of detection, and promote the transformation and upgrading of industrial production.

[0004] The prior art with the authorization announcement number CN219891119U discloses a detection device for printing adhesive film defect detection, which adopts the setting of multiple light sources to highlight the imaging features of the surface defects of the adhesive film and effectively improve the problem that the camera cannot identify the surface defects due to the variety of defects on the adhesive film. However, the structure is relatively complex, the camera is used to detect adhesive film defects, the camera has small scale span and long focusing time, the detection time is long, and the efficiency is low. UTILITY MODEL CONTENT

[0005] The utility model overcomes the problems of fewer defect types, small scale span and low detection efficiency in the adhesive film defect detection of the prior art, and provides an adhesive film defect detection device.

[0006] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0007] The utility model provides a kind of adhesive film defect detection device, it is characterized by, including: rack module, imaging module, illumination module, motion platform module;Wherein, rack module includes several guide rails;Imaging module includes Z-axis movement mechanism and imaging camera, is located the guide rail sliding connection of rack module top and rack module top;Illumination module is located below imaging module, part is slidably connected with the guide rail in rack module, part and motion platform module synchronous movement;Motion platform module includes motion platform, X-axis movement mechanism and Y-axis movement mechanism, be set in the inside rack module and be located below illumination module and imaging module.

[0008] Further, the X-axis movement mechanism includes a first linear motor and a first guide rail, which is arranged at the bottom of the motion platform module;The Y-axis movement mechanism includes a second linear motor, which is arranged on the X-axis movement mechanism, and the X-axis movement mechanism and the Y-axis movement mechanism are parallel to the plane on which the illumination module is located.

[0009] Further, the Z-axis movement mechanism includes a motor and a screw rod.

[0010] Further, the imaging module includes a face array camera module and a global camera module, the face array camera module includes a Z-axis movement mechanism and a face array camera, and is slidably connected with the second guide rail;The global camera module includes a Z-axis movement mechanism and a global camera, and is slidably connected with the fifth guide rail;The ground clearance of the global camera module is greater than that of the face array camera module.

[0011] Further, the illumination module includes a coaxial light source, a white bar light source and a surface light source;The coaxial light source is slidably connected with the third guide rail;The white bar light source is slidably connected with the fourth guide rail;The coaxial light source and the white bar light source are located on the same side as the face array camera module;The surface light source moves synchronously with the motion platform module;The ground clearance of the coaxial light source is greater than that of the white bar light source, and the ground clearance of the white bar light source is greater than that of the surface light source.

[0012] Further, the coaxial light source is a visual blue coaxial light source, the white bar light source is a machine vision linear scanning light source, and the surface light source is an industrial camera square direct machine vision light source.

[0013] Further, the white bar light source is slidably connected with the guide rail through a line light source mounting seat, and the line light source mounting seat is provided with an arc-shaped groove for adjusting the illumination angle and range of the light source.

[0014] Further, the motion platform is provided with a clamping fixture for positioning the adhesive film.

[0015] Further, the rack module is provided with a plurality of legs and non-slip pads.

[0016] Further, the guide rail is an aluminum alloy guide rail.

[0017] Compared with the prior art, the beneficial effects of the technical scheme of the utility model are:

[0018] By moving the motion platform in the XY axis direction along the guide rail, the sliding range of the motion platform is expanded; by changing the irradiation angle and irradiation range of the white strip-shaped light source through the arc-shaped groove, the detection device can detect defects of more models of rubber molds. The area array camera module and the global camera module can adjust the position through the guide rail, and adjust the focusing up and down through the Z-axis motion mechanism, effectively increasing the camera scale span and shortening the focusing time. In the scheme, the positions of the imaging module and the illumination module on the rack module are adjustable, and the positions can be flexibly adjusted according to rubber molds of different sizes, suitable for defect detection of more models of rubber molds, realizing defect detection of rubber films from 10 microns to meters, and the platform considers different sizes and types of rubber films, so that it can adapt to changing production demands, and can provide consistent high-quality detection services whether it is small-batch customized products or large-scale industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a detection state schematic view of a rubber film defect detection device;

[0020] Figure 2 It is a detection state schematic view of a rubber film defect detection device;

[0021] Figure 3 It is a front view of a rubber film defect detection device;

[0022] Figure 4 It is a top view of a rubber film defect detection device;

[0023] Figure 5 It is a right view of a rubber film defect detection device;

[0024] 1-First linear motor; 2-First guide rail; 3-Second linear motor; 4-Motion platform; 5-Surface light source; 6-White strip-shaped light source; 7-Coaxial light source; 8-Area array camera; 9-Screw rod; 10-Motor; 11-Fixed clamp; 12-Global camera; 13-Second guide rail; 14-Third guide rail; 15-Fourth guide rail; 16-Fifth guide rail; 21-Rack module; 22-Imaging module; 23-Illumination module; 24-Motion platform module; 25-Arc-shaped groove. DETAILED DESCRIPTION

[0025] The drawings are only used for illustrative description, and cannot be understood as a limitation on the patent;

[0026] In order to better illustrate the embodiment, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0027] It will be appreciated by those skilled in the art that certain well-known structures and their descriptions have been omitted from the drawings for the sake of brevity.

[0028] The technical solutions of the utility model will be further described below in combination with the drawings and embodiments.

[0029] Embodiment 1

[0030] As Figure 1 shown is a kind of adhesive film defect detection device detection state schematic diagram, Figure 2 shown is a kind of adhesive film defect detection device to be detected state schematic diagram, the front view, top view and right view of a kind of adhesive film defect detection device as shown in Figure 3 、 Figure 4 、 Figure 5 .

[0031] A kind of adhesive film defect detection device, comprising: rack module 21, imaging module 22, illumination module 23, motion platform module 24.

[0032] Wherein, rack module 21 is responsible for supporting the mechanical skeleton of entire system, ensure guide rail, imaging module 22, illumination module 23 and motion platform module 24 are positioned in stable, precision controllable space.Rack module 21 includes several guide rails, the guide rail adopts aluminum alloy guide rail, to meet the requirements of long-term stable operation and high-precision detection, in addition, rack module 21 is also provided with several supporting legs and non-slip pads, for improving the stability of whole machine and reducing vibration, ensure the accuracy of the position of imaging module 22 and illumination module 23 during detection.

[0033] Imaging module 22 includes area array camera module 8 and global camera module 12, the area array camera module 8 includes Z-axis motion mechanism and area array camera, and is slidably connected with second guide rail 13;The global camera module 12 includes Z-axis motion mechanism and global camera, and is slidably connected with fifth guide rail 16;The ground clearance of global camera module 12 is greater than the ground clearance of area array camera module 8.Area array camera and global camera can move or fine-tune in a particular direction along respective guide rails to adapt to different detection requirements.The Z-axis motion mechanism includes motor and screw rod, and the motor and screw rod are used as auxiliary focusing mechanism, for adjusting the distance between camera and measured adhesive film, to ensure that clear, high-resolution images are obtained and the camera scale span can be effectively increased and the focusing time is shortened.In the embodiment, global camera module 12 adopts single global camera configuration;Area array camera module 8 adopts multiple area array camera configuration, and the area array camera is 3, which is distributed at equal intervals on the track, and multiple-view, multiple-resolution detection can be realized.

[0034] The lighting module 23 comprises a first lighting module and a second lighting module, the first lighting module comprising the coaxial light source 7 and the white linear light source 6, and the second lighting module comprising the area light source 5; in the embodiment, the coaxial light source 7 is a visual blue coaxial light source and is in sliding connection with the third guide rail 14; the white linear light source 6 is a machine vision linear scanning light source and is in sliding connection with the fourth guide rail 15; the coaxial light source 7 and the white linear light source 6 are located on the same side as the area array camera module 8; the area light source 5 is an industrial camera square direct machine vision light source and moves synchronously with the motion platform module 24; the height of the coaxial light source 7 from the ground is greater than the height of the white linear light source 6 from the ground, and the height of the white linear light source 6 from the ground is greater than the height of the area light source 5 from the ground; the coaxial light source 7 is three in number and is arranged equidistantly on the track and directly below the area array camera module 8. The white linear light source 6 is six in number and is arranged below the coaxial light source 7, one white linear light source 6 is arranged on each of the left and right sides of each coaxial light source 7, the white linear light source 6 is in sliding connection with the guide rail through a linear light source mounting seat, the linear light source mounting seat is provided with an arc-shaped groove 25 for adjusting the illumination angle and range of the light source, and the optical requirements of different adhesive film defect detection are met, as shown in Figure 3

[0035] The motion platform module 24 comprises the motion platform 4, an X-axis motion mechanism and a Y-axis motion mechanism, and is arranged inside the rack module 21 and below the lighting module 23 and the imaging module 22. The X-axis motion mechanism comprises the first linear motor 1 and the first guide rail 2 and is arranged at the bottom of the motion platform module 24, and the motion of the motion platform module 24 in the X-axis direction is realized through the first linear motor 1 and the first guide rail 2; the Y-axis motion mechanism is arranged on the X-axis motion mechanism and comprises the second linear motor 3, and the motion of the motion platform 4 in the Y-axis direction is realized through the second linear motor 3, the X-axis motion mechanism and the Y-axis motion mechanism are both parallel to the plane where the lighting module 23 is located, and the motion of the motion platform in the XY-axis direction along the guide rail can effectively expand the sliding range of the motion platform. The motion platform 4 is further provided with a clamping and fixing device 11 for adhesive film positioning, when the adhesive film is placed on the motion platform 4, the clamping and fixing device 11 can abut and position the side wall of the adhesive film, realize the rapid alignment of the adhesive film on the motion platform 4, and improve the detection efficiency, as shown in Figure 2

[0036] In the embodiment, the X-axis movement range of the defect detection platform is 0-1000mm, the Y-axis movement range is 0-550mm, and the Z-axis movement range is 0-80mm, and the adhesive film defect detection from 10 microns to meters can be realized. The working process is as follows:

[0037] Before detection, as shown in Figure 2 ​​As shown, the motion platform module 24 runs to the initialization position, i.e. the position below the global camera module 12, the film is installed on the motion platform 4 above the surface light source 5, and is fixed by the clamping fixing device 11, the global camera module 12 is used to perform overall global scanning on the film, the overall size and shape of the film are determined, and the specific area to be detected is determined. After global scanning, the surface light source 5 below the film illuminates the film, and the defects and impurities such as bubbles in the film will be displayed on the film due to different light transmittances. In motion, as shown, Figure 1 As shown, the platform drives the surface light source and the film to move together, the area array camera 8, the white strip light source 6 and the coaxial light source 7 are fixed, the detection platform 4 is driven by the linear motor to control the XY axis movement, the data obtained by global scanning is analyzed by using the path planning algorithm, and the shortest path covering all the areas to be detected is planned, so that the detection accuracy and efficiency are ensured. In addition, the bubbles or impurities in the film will not produce obvious multi-directional scattering reflection under light, and the defects on the surface of the film will reflect light in multiple directions. Therefore, when the white strip light source 6 and the coaxial light source 7 irradiate the film, the area array camera 8 can effectively identify and judge the existence of defects according to the multi-directional scattering reflection characteristics.

[0038] The same or similar reference signs correspond to the same or similar components;

[0039] The terms used to describe the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent;

[0040] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or changes can be made. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A device for detecting defects in adhesive films, characterized in that, The application relates to a machine rack module (21), an imaging module (22), an illumination module (23) and a motion platform module (24), wherein the machine rack module (21) comprises a plurality of guide rails; the imaging module (22) comprises a Z-axis motion mechanism and an imaging camera, and is slidably connected to the top of the machine rack module (21) and the guide rails on the top of the machine rack module (21); the illumination module (23) is located below the imaging module (22) and comprises a first illumination module and a second illumination model, the first illumination module is slidably connected to the guide rails in the machine rack module (21), and the second illumination model moves synchronously with the motion platform module (24); the motion platform module (24) comprises a motion platform (4), an X-axis motion mechanism and a Y-axis motion mechanism, is arranged in the machine rack module (21) and is located below the illumination module (23) and the imaging module (22). The X-axis motion mechanism comprises a first linear motor (1) and a first guide rail (2) and is arranged at the bottom of the motion platform module (24); the Y-axis motion mechanism comprises a second linear motor (3) and is arranged on the X-axis motion mechanism; the X-axis motion mechanism and the Y-axis motion mechanism are parallel to the plane where the illumination module (23) is located.

2. The adhesive film defect detection apparatus according to claim 1, wherein The Z-axis motion mechanism comprises a motor (10) and a screw rod (9).

3. The adhesive film defect detection apparatus according to claim 1, wherein The imaging module (22) comprises a planar array camera module (8) and a global camera module (12), the planar array camera module (8) comprises a Z-axis motion mechanism and a planar array camera and is slidably connected to a second guide rail (13); the global camera module (12) comprises a Z-axis motion mechanism and a global camera and is slidably connected to a fifth guide rail (16); the global camera module (12) has a ground clearance greater than that of the planar array camera module (8).

4. The adhesive film defect detection apparatus according to claim 1, wherein The illumination module (23) comprises a first illumination module and a second illumination model, the first illumination module comprises a coaxial light source (7) and a white strip-shaped light source (6), and the second illumination model comprises a surface light source (5); the coaxial light source (7) is slidably connected to a third guide rail (14); the white strip-shaped light source (6) is slidably connected to a fourth guide rail (15); the coaxial light source (7) and the white strip-shaped light source (6) are located on the same side of the planar array camera module (8); the surface light source (5) moves synchronously with the motion platform module (24); the coaxial light source (7) has a ground clearance greater than that of the white strip-shaped light source (6), and the white strip-shaped light source (6) has a ground clearance greater than that of the surface light source (5).

5. The adhesive film defect detection apparatus according to claim 4, wherein The coaxial light source (7) is a visual blue coaxial light source, the white strip-shaped light source (6) is a machine vision linear scanning light source, and the surface light source (5) is an industrial camera square direct machine vision light source.

6. The adhesive film defect detection apparatus according to claim 5, wherein The white strip-shaped light source is slidably connected to the guide rail through a linear light source mounting seat, and the linear light source mounting seat is provided with an arc-shaped groove (25) for adjusting the illumination angle and range of the light source.

7. The adhesive film defect detection apparatus according to claim 5, wherein The motion platform (4) is provided with a clamping fixing device (11) for positioning a film.

8. The adhesive film defect detection apparatus according to claim 1, wherein The machine rack module (21) is provided with a plurality of supporting legs and anti-skid pads.

9. The adhesive film defect detection apparatus of claim 1, wherein The guide rails are aluminum alloy guide rails.

10. The apparatus for detecting defects of a film according to claim 1, wherein ​

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