CN-121994706-A - Intelligent recognition control feedback system for surface defects of printed film of wood-plastic door plate

CN121994706ACN 121994706 ACN121994706 ACN 121994706ACN-121994706-A

Abstract

The invention discloses an intelligent recognition control feedback system for surface defects of a printed film of a wood-plastic door panel, and relates to the technical field of image recognition feedback. The device comprises a light source irradiation module and an image acquisition module, wherein the light source irradiation module is used for providing uniform and adjustable-wavelength illumination for the surface of a printed film of a wood-plastic door plate, and the image acquisition module is used for carrying out real-time imaging acquisition on the surface of the printed film under the stable illumination condition provided by the light source irradiation module and outputting image data containing surface textures and defect characteristics. According to the invention, through intelligent recognition of multi-feature fusion, the detection capability of surface and internal defects is improved, the defective rate is reduced, on the other hand, the technological parameters can be dynamically adjusted on the premise of not interrupting production through closed-loop control and strategy self-adaptive optimization, the overall production efficiency and the product consistency are improved, meanwhile, the data traceability and the automation characteristic are realized, the dependence on manual quality inspection is reduced, and the assurance is provided for the production of the printed film of the wood-plastic door plate.

Inventors

YAN FEIYANG
ZHANG SIJIE
REN XUFEI
CAO YULAN
MA LING

Assignees

浙江欧飞新材料集团有限公司

Dates

Publication Date: 20260508
Application Date: 20260227

Claims (9)

1. The utility model provides a wood-plastic door plant printing membrane surface defect intelligent identification control feedback system which characterized in that includes: The light source irradiation module is used for providing uniform and adjustable-wavelength illumination for the surface of the printed film of the wood-plastic door plate; The image acquisition module is used for carrying out real-time imaging acquisition on the surface of the printing film under the stable illumination condition provided by the light source irradiation module and outputting image data containing surface textures and defect characteristics; the synchronous association module is used for keeping the running speed of the film body transmission module, the lighting time sequence of the light source irradiation module and the acquisition beat of the image acquisition module synchronous; The defect identification module is used for receiving the image data output by the image acquisition module, extracting and analyzing the defect characteristics, completing the automatic identification of scratches, bubbles, chromatic aberration and stains, and outputting the defect type, the spatial position, the area and the severity; The intelligent control feedback module is used for receiving the defect result data output by the defect identification module and generating a control instruction according to the defect type and the severity; The construction execution module is used for marking, eliminating, adjusting technological parameters or prompting an alarm on the corresponding area of the printing film according to the instruction of the control feedback module; the film body transmission module is used for driving the printed film to continuously transmit along the path and providing a displacement reference for defect detection; and the man-machine interaction terminal is used for displaying the running state of the system, the defect detection result and control information and providing parameter setting and data management functions.
2. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door plate according to claim 1, wherein the defect recognition module is used for realizing defect recognition by the following method: dividing the surface of the printing film into a plurality of detection subareas; collecting images at three positions above, beside and on the back of each sub-area, and extracting feature vectors, including gray scale, edge, texture, color and light transmission features; judging the feature vector and a preset threshold value, and fusing three-site judging results, wherein at least one site is abnormal, namely, the defect exists in the judging sub-region; And calculating the space coordinates and the area of the defect based on the sub-region clusters, and outputting defect result data comprising defect types, positions, sizes and severity.
3. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door plate according to claim 2, wherein the defect recognition module sets weights for different defect types in the judging process, the scratch or surface adhesion type defects take side irradiation sites as judging bases, the bubble or internal defects take back transmission sites as judging bases, and the chromatic aberration type defects take upper irradiation sites as judging bases.
4. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door plate according to claim 1, wherein the intelligent control feedback module carries out risk level judgment according to the defect result data, and the method comprises the following steps: assigning an impact weight to the defect type; calculating a size factor for the defect area; quantifying the defect severity parameter as a severity factor; And calculating a comprehensive risk value according to the weighted product, and dividing the comprehensive risk value into an information grade, an intervention grade and a high risk grade according to a set threshold value.
5. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door panel according to claim 4, wherein the intelligent control feedback module generates the control command according to the defect risk level comprises the following steps: The information defect level records only data; the intervention grade defect triggers an alarm prompt and can generate a process parameter adjustment instruction; And generating a rejection or marking instruction for the high risk level defect, and matching with the film body transmission position information to finish rejection or marking.
6. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door plate, which is disclosed in claim 1, is characterized in that the synchronous association module collects film body transmission speed and displacement signals through an incremental encoder, and generates trigger signals matched with the film body speed through a synchronous control unit, and the trigger signals are used for coordinating the working time sequence of the light source irradiation module and the image acquisition module to complete real-time synchronous acquisition and illumination control.
7. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door plate according to claim 1 is characterized in that a construction execution module performs process parameter adjustment such as code spraying or mark spraying, high risk area rejection, printing speed, film tension and the like on a defect area through an execution mechanism according to a control instruction generated by the intelligent control feedback module, and triggers an audible and visual prompt for the defect reaching an alarm level.
8. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door plate according to claim 1, wherein the intelligent recognition control feedback system is characterized in that image data collected by the image collection module keeps space and time consistency with film body transmission position signals, the intelligent recognition control feedback system is used for guaranteeing that multi-site feature fusion judgment results correspond to actual film body positions, and the light source irradiation module enables scratches, bubbles, chromatic aberration and stain defects to form optical contrast under different irradiation conditions by adjusting brightness, wavelength and irradiation angle to match colors and texture features of the printed film.
9. The intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door panel according to claim 1 is characterized in that an intelligent control feedback module calculates comprehensive risk values based on defect type, area and severity parameters, divides defects into an information level, an intervention level and a high risk level, generates control instructions for recording, alarming, process adjustment and rejection according to the risk levels, and achieves closed-loop feedback control, and a construction execution module completes defect area marking, high risk area rejection, process parameter adjustment and alarm prompt according to the instructions generated by the intelligent control feedback module through an execution mechanism, so that recognition results directly drive a production line to act to form closed-loop control.

Description

Intelligent recognition control feedback system for surface defects of printed film of wood-plastic door plate Technical Field The invention relates to the technical field of image recognition feedback, in particular to an intelligent recognition control feedback system for surface defects of a printed film of a wood-plastic door plate. Background The wood-plastic door plate printing film is a core material for surface decoration and protection in the production of the wood-plastic door plate, and in the working procedures of printing, compounding and the like, defects such as scratches, bubbles, chromatic aberration, pattern dislocation, edge burrs and the like are easily generated due to insufficient equipment operation precision, uneven raw material tension or fluctuation of process temperature and humidity, so that an intelligent recognition control feedback system for the surface defects of the wood-plastic door plate printing film is needed to realize real-time capturing, accurate classification and quick feedback of the surface defects of the printing film, and the product quality stability is ensured. According to the method and system for identifying the surface defects of the wooden composite board furniture, the texture characteristic map and the structural information map are matched, local mutual information of the texture characteristic map and the structural information map is calculated in each area, resolution images of wood board images under different scales are acquired, mutual information matrixes of the resolution images are calculated, abnormal scores are distributed for each matrix element based on the mutual information matrixes, grids are divided according to the abnormal scores, association values of adjacent grids are calculated, defect areas are obtained based on the association values, and defect classification is carried out on the defect areas. However, in actual production, the disclosed method system and the existing mature system still have obvious limitations that firstly, the traditional method relies on single illumination or two-dimensional image characteristics, scratches, bubbles, chromatic aberration and defects in a film body are difficult to capture simultaneously and effectively, especially, tiny scratches, light color differences and defects in the film body are not sensitive enough, omission or misjudgment is easy, secondly, defect identification and production process control lack of closed loop linkage, and most of the defect identification and production process control are off-line detection or manual quality inspection, defect information cannot be fed back to printing, coating or attaching equipment in real time to adjust process parameters, defects are corrected and lag, finished product qualification rate is influenced, and defect classification and severity judgment depend on single threshold value or experience setting, intelligent classification and risk assessment capability are lacked, differential treatment strategies are difficult to be adopted for different types of defects, and strategy self-adaption optimization based on historical data is also impossible. Disclosure of Invention The invention aims to provide an intelligent recognition control feedback system for surface defects of a printed film of a wood-plastic door plate, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the intelligent recognition control feedback system for the surface defects of the printed film of the wood-plastic door plate comprises the following components: The light source irradiation module is used for providing uniform and adjustable-wavelength illumination for the surface of the printed film of the wood-plastic door plate; The image acquisition module is used for carrying out real-time imaging acquisition on the surface of the printing film under the stable illumination condition provided by the light source irradiation module and outputting image data containing surface textures and defect characteristics; the synchronous association module is used for keeping the running speed of the film body transmission module, the lighting time sequence of the light source irradiation module and the acquisition beat of the image acquisition module synchronous; The defect identification module is used for receiving the image data output by the image acquisition module, extracting and analyzing the defect characteristics, completing the automatic identification of scratches, bubbles, chromatic aberration and stains, and outputting the defect type, the spatial position, the area and the severity; The intelligent control feedback module is used for receiving the defect result data output by the defect identification module and generating a control instruction according to the defect type and the severity; The construction execution module is used for marking, eliminating, adjust