An on-line defect detector for thin film appearance detection

Abstract

The utility model discloses a kind of online defect detection instruments for film appearance detection, including base shell, the inside edge of the base shell is equipped with enclosure, and the film tensioning system for keeping film tight is arranged between base shell, further including the segmented detection system of segmented film appearance detection being arranged at one side of base shell.The utility model belongs to machine vision technical field, specifically a kind of base shell inside is equipped with the film tensioning system for ensuring film flatness, while the segmented detection system for carrying out segmented scanning detection to film surface is arranged at one side of base shell, cooperates and works to realize the online defect detection instrument for film appearance detection of the automation quality detection of film.

Description

Technical Field

[0001] This utility model belongs to the field of machine vision technology, and in particular relates to an online defect detector for thin film appearance inspection. Background Technology

[0002] As a key material in many industries such as packaging, electronics, and optics, the appearance quality of films directly affects product performance and application effectiveness. For example, if food packaging films have pinholes or impurities, it may lead to a decrease in packaging sealing and affect the shelf life of the food; if films used in the electronics industry have scratches or bubbles, they may interfere with the normal operation of electronic components.

[0003] Traditional thin film appearance inspection mainly relies on manual visual inspection. Manual inspection is inefficient and cannot keep up with the pace of high-speed production lines, thus restricting production efficiency. For some minor defects such as tiny scratches and extremely thin impurities, it is difficult for the human eye to identify them, which cannot meet the quality requirements of high-precision products. Summary of the Invention

[0004] In response to the above situation, in order to overcome the shortcomings of low efficiency in existing technologies.

[0005] The technical solution adopted by this utility model is as follows: an online defect detector for film appearance inspection, including a base shell, a baffle provided on the inner edge of the base shell, and a film tensioning system disposed between the base shells to keep the film taut, and also including a segmented inspection system disposed on one side of the base shell for segmented inspection of the film appearance.

[0006] Furthermore, the film tensioning system includes a first drive roller, a second drive roller, a first auxiliary roller, and a second auxiliary roller. The first drive roller is disposed through one end of the enclosure, and the second drive roller is disposed through the other end of the enclosure. The first auxiliary roller is rotatably disposed between the enclosures near the first drive roller, and the second auxiliary roller is rotatably disposed between the enclosures near the second drive roller. The extended end of the first drive roller is poweredly connected to the power shaft of the first rotary motor, and the extended end of the second drive roller is poweredly connected to the power shaft of the second rotary motor. The first rotary motor is fixedly connected to the outside of the base shell, and the second rotary motor is fixedly connected to the outside of the base shell.

[0007] Furthermore, the base shell is L-shaped, and support plates are symmetrically fixed to the inner side of the bend of the base shell. An adjusting rod is threadedly connected to the support plate, and a support block is rotatably provided at the end of the adjusting rod. A pressure roller is rotatably provided between the support blocks, and a pressure sensor is provided on the pressure roller.

[0008] Furthermore, the segmented detection system includes a detection unit housing, a high-precision imaging device, and a light source. Several detection unit housings are fixed to the inner side of the base shell, the high-precision imaging device is fixed inside the detection unit housing, the light source is fixed to the inner side of the detection unit housing, and a sprayer is provided on the outer side of the detection unit housing away from the light source.

[0009] Furthermore, the high-precision imaging device consists of multiple sets of high-resolution line array cameras, and the light source includes laser light groups and LED strip lights.

[0010] Furthermore, a microprocessor is provided on the outer side of the base shell. The first rotary motor is electrically connected to the microprocessor via wires, the second rotary motor is electrically connected to the microprocessor via wires, the pressure sensor is electrically connected to the microprocessor via wires, the high-precision imaging device is electrically connected to the microprocessor via wires, the light source is electrically connected to the microprocessor via wires, and the sprayer is electrically connected to the microprocessor via wires.

[0011] The beneficial effects of this utility model after adopting the above structure are as follows:

[0012] (1) The film is kept in a taut state by the clamping action of the first transmission roller and the first auxiliary roller driven by the first rotary motor and the clamping action of the second transmission roller and the second auxiliary roller driven by the second rotary motor, which facilitates the later appearance inspection. The film is also tightened and the pressure is monitored by the linkage and matching of the adjusting rod, the support block and the pressure roller with the pressure sensor.

[0013] (2) The high-resolution linear array high-precision imaging device inside the detection unit housing monitors the light transmittance and reflectivity of the thin film through the direct light source composed of laser lamps and the diffuse reflection light source composed of LED strip lights at the lower end of the detection unit housing, ensuring that defects such as tiny impurities and pinholes are clearly imaged, and the defects are sprayed through the microprocessor-linked sprayer. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 3 This is a half-sectional schematic diagram of the overall structure of this utility model;

[0018] Figure 4 for Figure 3 Enlarged view of part A.

[0019] In the attached drawings: 1. Base shell, 2. First drive roller, 3. Second drive roller, 4. First auxiliary roller, 5. Second auxiliary roller, 6. First rotary motor, 7. Second rotary motor, 8. Support plate, 9. Adjusting rod, 10. Support block, 11. Pressure roller, 12. Detection unit housing, 13. Imaging device, 14. Light source, 15. Sprayer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] like Figure 1 As shown, an online defect detector for thin film appearance inspection mainly consists of three parts: the base shell 1 main structure, the thin film tensioning system, and the segmented detection system.

[0023] The base shell 1 adopts an L-shaped frame design, with an annular enclosure structure set on the inner edge of the base shell. Inside the enclosure, a film tensioning system is installed to ensure the flatness of the film. At the same time, a segmented detection system that can perform segmented scanning detection on the film surface is arranged on one side of the base shell 1. The three work together to realize the automated quality detection of the film.

[0024] like Figure 2 As shown, the film tensioning system adopts a dual-motor drive design, including a first drive roller 2, a second drive roller 3, a first auxiliary roller 4, and a second auxiliary roller 5. The first drive roller 2 is horizontally installed through the front end of the enclosure, and the second drive roller 3 is installed correspondingly at the rear end of the enclosure. The first auxiliary roller 4, which can rotate freely, is located near the first drive roller 2, and the second auxiliary roller 5 is correspondingly installed near the second drive roller 3.

[0025] The extension end of the first drive roller 2 is connected to the output shaft of the first rotary motor 6 via a coupling, while the extension end of the second drive roller 3 is connected to the output shaft of the second rotary motor 7. The two sets of motors drive the first drive roller 2 and the second drive roller 3 respectively, forming a clamping action with the first auxiliary roller 4 and the second auxiliary roller 5, ensuring that the film maintains ideal tension throughout the testing process.

[0026] Two support plates 8 are symmetrically fixedly installed on the inner side of the corner of the L-shaped base shell 1. Precision threaded holes are machined on the support plates 8, and adjustable adjustment rods 9 are installed via threaded connections. The ends of the adjustment rods 9 are connected to support blocks 10 via bearings, and a pressure roller 11 is installed between the two support blocks 10. Through the precise adjustment of the adjustment rods 9, the stable support of the support blocks 10, and the uniform force applied to the pressure roller 11, a linkage control system is formed with the pressure sensor. This not only further enhances the tensioning effect of the film but also allows the pressure parameters of the film to be monitored in real time by the pressure sensor integrated on the pressure roller 11.

[0027] like Figure 3-4 As shown, the segmented detection system includes several detection unit housings 12, high-precision imaging devices 13, and illumination sources 14. The several detection unit housings 12 are uniformly fixed inside the base shell 1, and each housing is equipped with an industrial-grade high-resolution linear array high-precision imaging device 13 and a dedicated illumination source 14.

[0028] The detection unit housing 12, on the side away from the light source 14, also integrates an automatic marking sprayer 15.

[0029] Specifically, the imaging device 13 adopts a modular design, consisting of an array of 1-3 high-resolution line-scan cameras. The number of cameras can be flexibly configured according to the width specifications of different films, while adapting to the characteristics of various film materials. The lighting system adopts a dual-light source design 14, using a laser light group and LED strip lights, providing both direct and diffuse lighting modes. A microprocessor is located on the outside of the base shell 1, and all functional modules, including the first rotary motor 6, the second rotary motor 7, the pressure-sensitive sensor, the line-scan high-precision imaging device 13, the dual-mode light source 14, and the sprayer 15, are electrically connected to the microprocessor via dedicated cables. During operation, the line-scan high-precision imaging device 13, in conjunction with the laser direct light source 14 and the LED diffuse light source 14, accurately captures changes in the light transmittance and reflectivity of the film, ensuring clear imaging of micron-level impurities or pinhole defects. Finally, the microprocessor controls the sprayer 15 to accurately mark the detected defect locations.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An online defect inspection instrument for thin film appearance inspection, characterized in that, include: A base shell, wherein the inner edge of the base shell is provided with a barrier; A film tensioning system is installed between the substrate and the film to ensure that the film maintains ideal tension throughout the testing process; A segmented inspection system is installed on one side of the substrate to inspect the appearance of the film in segments. The film tensioning system includes a first drive roller, which is disposed through one end of the enclosure. The second drive roller is disposed through the other end of the enclosure. A first auxiliary roller is rotatably disposed between the barriers close to the first drive roller. The second auxiliary roller is rotatably disposed between the barriers near the second drive roller. The extended end of the first transmission roller is poweredly connected to the power shaft of the first rotary motor, and the extended end of the second transmission roller is poweredly connected to the power shaft of the second rotary motor. The first rotary motor is fixed to the outside of the base shell, and the second rotary motor is fixed to the outside of the base shell. The segmented detection system includes: The detection unit housing, and several of the detection unit housings are fixedly connected to the inner side of the base shell. A high-precision imaging device, wherein the high-precision imaging device is fixedly attached inside the housing of the detection unit. A light source is fixed to the inside of the detection unit housing. A sprayer is provided on the outside of the detection unit housing away from the light source. The base shell is L-shaped.

2. The online defect detector for thin film appearance inspection according to claim 1, characterized in that: The film tensioning system also includes a support plate symmetrically fixed to the inner side of the bend of the base shell, an adjusting rod threadedly connected to the support plate, a support block rotatably disposed at the end of the adjusting rod, and a pressure roller rotatably disposed between the support blocks, wherein the pressure roller is equipped with a pressure-sensitive sensor.

3. The online defect detector for thin film appearance inspection according to claim 2, characterized in that: The high-precision imaging device consists of multiple sets of high-resolution line array cameras, and the light source includes laser light groups and LED strip lights.

4. An online defect detector for thin film appearance inspection according to claim 3, characterized in that: A microprocessor is located on the outside of the base shell. The first rotary motor is electrically connected to the microprocessor via wires. The second rotary motor is electrically connected to the microprocessor via wires. The pressure sensor is electrically connected to the microprocessor via wires. The high-precision imaging device is electrically connected to the microprocessor via wires. The light source is electrically connected to the microprocessor via wires. The sprayer is electrically connected to the microprocessor via wires.

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