An automatic edge banding method for an edge banding machine based on machine recognition

Abstract

The present invention discloses an automatic edge banding method for an edge banding machine based on machine recognition, including: obtaining information of the workpiece to be edge banded, where the information of the workpiece to be edge banded includes the specifications of the workpiece to be edge banded and the applicable edge banding categories; conveying the workpiece to be edge banded to the corresponding edge banding station for edge banding according to the specifications and edge banding categories of the workpiece to be edge banded. The automatic control of the edge banding process can be carried out according to the information of the workpiece to be edge banded, and the edge banding method corresponding to the workpiece to be edge banded can be automatically selected to meet the edge banding requirements of the workpiece in different ways, saving the labor control cost. At the same time, after the edge banding is completed, the edge banding methods of the workpieces can be conveniently distinguished, facilitating the subsequent assembly of the plates, making the relatively delicate edge banding exposed outside, achieving the aesthetic effect and saving costs at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of edge banding machines, and more specifically, to an automatic edge banding method for an edge banding machine based on machine recognition. Background Art

[0002] In the production and processing of panel furniture, the edge banding operation is an important process, and the quality of edge banding directly affects the quality, price, and grade of the product. Edge banding can well improve the appearance quality of furniture, prevent damage to the edges and corners, peeling or flaking of the veneer layer during transportation and use of furniture, and at the same time can play roles such as waterproofing, sealing the release of harmful gases, and reducing deformation.

[0003] Currently, the edge banding machines mainly adopt two edge banding methods: hot melt adhesive edge banding and laser edge banding. Usually, the two edge banding methods do not coexist in the same production line, and each has its own advantages and disadvantages. The edge banding method can be selected according to the material of the board, or the process, or the use environment, or the cost; different edge banding methods can also be used for different edges of the same board. For example, for the outer surface of a piece of furniture that can be directly observed by users, it is often desired to have a more delicate edge banding, while for the hidden places such as the bottom or back of the furniture that are difficult for users to observe, the delicacy of the edge banding does not affect the user experience. If the two edge banding methods are integrated into the same production line and the edge banding method is selected by manually controlling the edge banding machine, it will increase the labor cost; at the same time, it is not convenient to distinguish the edge banding methods of the boards after edge banding. Therefore, it is necessary to propose an automatic edge banding method for an edge banding machine based on machine recognition to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides an automatic edge banding method for an edge banding machine based on machine recognition, including:

[0006] S100. Obtain the information of the workpiece to be edge banded, where the information of the workpiece to be edge banded includes the specification of the workpiece to be edge banded and the applicable edge banding category;

[0007] S200. Transport the workpiece to be edge banded to the corresponding edge banding station for edge banding according to the specification and edge banding category of the workpiece to be edge banded.

[0008] Preferably, the information of the workpiece to be edge banded further includes: the number of the workpiece to be edge banded;

[0009] The specifications of the workpiece to be edge-sealed include: the length, width, height, and color of the workpiece to be edge-sealed;

[0010] The number of the workpiece to be edge-sealed is associated with the edge-sealing category and the specifications of the workpiece to be edge-sealed, and is stored in the edge-sealing machine.

[0011] Preferably, the S200 includes:

[0012] S210. Adjust the height of the upper conveying pressure roller of the edge-sealing machine conveying channel according to the height of the workpiece to be edge-sealed, so that the distance between the upper conveying pressure roller and the lower conveying pressure roller is suitable for conveying the workpiece to be edge-sealed;

[0013] S220. Convey the workpiece to be edge-sealed to the corresponding edge-sealing station on the adjusted conveying channel according to the edge-sealing category;

[0014] S230. Before the edge-sealing station corresponding to the edge-sealing category performs edge-sealing work, determine the edge-sealing length according to the length or width of the workpiece to be edge-sealed obtained, and select an edge-sealing tape of the corresponding color according to the color of the workpiece to be edge-sealed obtained.

[0015] Preferably, the S100 includes:

[0016] S110. Identify the target area of the workpiece to be edge-sealed;

[0017] S120. When the target area reaches the acquisition position, identify whether there is a classification label in the target area,

[0018] wherein, the classification label is preset in the target area on the surface of the workpiece to be edge-sealed;

[0019] S130. If there is no classification label in the target area, issue an alarm prompt. If there is a classification label in the target area, obtain the information of the workpiece to be edge-sealed on the classification label.

[0020] Preferably, the S110 includes:

[0021] S111. Identify the edge line of the front side of the conveying direction of the workpiece to be edge-sealed;

[0022] S112. After the edge line of the front side reaches the specified position, identify the edge line to be edge-sealed of the workpiece to be edge-sealed;

[0023] S113. Establish a plane coordinate system with the intersection point of the side line of the front side and the side line to be edge-sealed as the origin. Mark the first point coordinate at a first distance from the origin on the side line to be edge-sealed, and mark the second point coordinate at a second distance from the origin on the side line of the front side. Draw a first virtual side line parallel to the side line of the front side at the first point coordinate, and draw a second virtual side line parallel to the side line to be edge-sealed at the second point coordinate. The rectangular area formed by the side line of the front side, the side line to be edge-sealed, the first virtual side line, and the second virtual side line is the target area.

[0024] Preferably, the classification label is provided with a graphic identifier corresponding to the edge-sealing category, a barcode identifier corresponding to the specification of the workpiece to be edge-sealed, and a number identifier corresponding to the number of the workpiece to be edge-sealed.

[0025] The classification label is provided with a direction guide and an edge-sealing guide. The direction guide points to the front side of the conveying direction of the workpiece to be edge-sealed, and the edge-sealing guide points to the edge to be sealed of the workpiece to be edge-sealed.

[0026] Preferably, obtaining the information of the workpiece to be edge-sealed on the classification label in S130 includes:

[0027] S131. Obtain the classification label image within the target area and preprocess the classification label image.

[0028] S132. Segment the preprocessed classification label image according to the positions of the graphic identifier, barcode identifier, and number identifier in the classification label image to obtain a first area image corresponding to the graphic identifier, a second area image corresponding to the barcode identifier, and a third area image corresponding to the number identifier.

[0029] S133. Identify the graphic identifier in the first area image to obtain the edge-sealing category; identify the barcode identifier in the second area image to obtain the specification of the workpiece to be edge-sealed; identify the number identifier in the third area image to obtain the number of the workpiece to be edge-sealed.

[0030] S134. Associate and store the number of the workpiece to be edge-sealed with the edge-sealing category and the specification of the workpiece to be edge-sealed.

[0031] Preferably, the edge-sealing station includes a laser edge-sealing station and a hot melt adhesive edge-sealing station.

[0032] Preferably, S230 includes: before the workpiece to be edge-sealed reaches the corresponding edge-sealing station, obtain the number of the workpiece to be edge-sealed again, then obtain the specification and edge-sealing category of the workpiece to be edge-sealed associated with the number, select the edge-sealing station according to the edge-sealing category, determine the edge-sealing length according to the length or width included in the specification of the workpiece to be edge-sealed, and select the edge-sealing tape of the corresponding color according to the color included in the specification of the workpiece to be edge-sealed.

[0033] Preferably, after all the edge sealing processes of the workpiece to be edge sealed are completed, the number information of the workpiece to be edge sealed is obtained, and the workpiece to be edge sealed is conveyed to the quality inspection station.

[0034] The quality inspection steps of the workpiece to be edge sealed include:

[0035] Obtain an image of the edge to be inspected of the workpiece to be edge sealed;

[0036] Perform image segmentation on the image of the edge to be inspected to obtain a plurality of segmented images;

[0037] Perform first feature extraction on the plurality of segmented images to obtain a feature matrix A including the features of the plurality of segmented images. Perform second feature extraction on the features of the plurality of segmented images in the feature matrix A to obtain a feature matrix B including the features of the plurality of segmented images. Fuse the features of the plurality of segmented images in the feature matrix B to obtain defect features. Convolve the defect features to obtain a three-dimensional defect feature map. Calculate the number of channels of each pixel point in the three-dimensional defect feature map to obtain the probability that each pixel point in the image of the edge to be inspected is a defect area;

[0038] Based on the probability that each pixel point is a defect area, identify the suspected areas in the image of the edge to be inspected;

[0039] If no suspected area is identified, it is considered that the image of the edge to be inspected does not include a defect area, and the quality inspection result of the workpiece to be edge sealed is qualified. Then, the workpiece to be edge sealed is conveyed to the qualified product area, and the qualified information is associated with the number information and stored;

[0040] If a suspected area is identified, perform connected component analysis on the suspected area to obtain the defect area in the image of the edge to be inspected. The quality inspection result of the workpiece to be edge sealed is unqualified. Then, the workpiece to be edge sealed is conveyed to the unqualified product area, and the unqualified information is associated with the number information and stored.

[0041] Compared with the prior art, the present invention at least includes the following beneficial effects:

[0042] The automatic edge sealing method of the edge sealer based on machine recognition according to the present invention can automatically control the edge sealing process according to the information of the workpiece to be edge sealed, and can automatically select the edge sealing method corresponding to the workpiece to be edge sealed to meet the different edge sealing requirements of the workpiece, saving the labor control cost. At the same time, after the edge sealing is completed, it is convenient to distinguish the edge sealing methods of the workpieces, which is convenient for the subsequent assembly of the plates, making the relatively delicate edge sealing exposed outside, achieving an aesthetic effect while also saving costs.

[0043] The automatic edge banding method of an edge banding machine based on machine recognition according to the present invention. Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. Description of the Drawings

[0044] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0045] Figure 1 It is a flowchart of the automatic edge banding method of an edge banding machine based on machine recognition according to the present invention;

[0046] Figure 2 It is a schematic diagram of the overall structure of the edge banding machine in the automatic edge banding method of an edge banding machine based on machine recognition according to the present invention;

[0047] Figure 3 It is a schematic diagram of the structure of the edge banding station in the automatic edge banding method of an edge banding machine based on machine recognition according to the present invention;

[0048] Figure 4 It is a schematic diagram of the recognition of the target area of the workpiece to be edge banded in the automatic edge banding method of an edge banding machine based on machine recognition according to the present invention;

[0049] Figure 5 It is a schematic diagram of the classification label in the automatic edge banding method of an edge banding machine based on machine recognition according to the present invention. Detailed Embodiment

[0050] The following further describes the present invention in detail in conjunction with the drawings and embodiments, so that those skilled in the art can implement it according to the description in the specification.

[0051] It should be understood that the terms such as "having", "comprising", and "including" used herein do not exclude the existence or addition of one or more other elements or their combinations.

[0052] As Figures 1 - 5 shown, the present invention provides an automatic edge banding method of an edge banding machine based on machine recognition, including:

[0053] S100. Obtain the information of the workpiece to be edge banded, where the information of the workpiece to be edge banded includes the specifications of the workpiece to be edge banded and the applicable edge banding categories;

[0054] S200. Convey the workpiece to be edge banded to the corresponding edge banding station for edge banding according to the specifications and edge banding categories of the workpiece to be edge banded;

[0055] Among them, the edge banding station includes a laser edge banding station 1 and a hot melt adhesive edge banding station 2.

[0056] Working principle of the above technical solution: Before the workpiece to be edge-sealed enters the conveying channel of the edge-sealing machine, the specification of the workpiece to be edge-sealed and the applicable edge-sealing category are obtained through the set acquisition module. The specification of the workpiece to be edge-sealed is used to adjust the edge-sealing working conditions of the edge-sealing machine. According to the edge-sealing category, the edge-sealing method for the workpiece to be edge-sealed can be selected, and the workpiece to be edge-sealed is conveyed to the corresponding edge-sealing station for edge-sealing work. The edge-sealing stations include a laser edge-sealing station and a hot-melt adhesive edge-sealing station. The edge-sealing process flow is as follows: Through the pre-milling mechanism, the edges of the workpiece are cut to prevent chipping caused by insufficient smoothness of the edges during cutting; Edge-sealing is carried out through the laser edge-sealing mechanism or the hot-melt adhesive edge-sealing mechanism (here, it needs to be selected according to the different edge-sealing categories of the workpiece to be edge-sealed); The edge-sealing is quickly cut through the trimming mechanism to ensure that the edge-sealing is flat and smooth; Through the rough trimming mechanism, the excess part is trimmed when processing the veneer, which is the first process of edge trimming; Through the fine trimming mechanism, mainly the PVC and acrylic edge-sealing strips of panel furniture are trimmed, and it is better to use edge-sealing strips with a thickness of more than 0.8 mm; The four-motor profiling edge-trimming mechanism trims the round corners of the board up, down, left, and right to make the end face of the board smoother and more beautiful; Through the scraping mechanism, the ripple marks caused by the cutting process of the non-linear movement of the edge trimming are eliminated, making the upper and lower parts of the board smoother and neater; Through the wire-breaking mechanism, the excess long edge-trimming chips are cut off, and the excess repair chips will not be wound onto the polishing wheel, preventing the long chips from jamming and burning out the polishing motor; Through the polishing mechanism, the processed board is cleaned with a cotton polishing wheel, and the edge-sealing end face is made smoother through polishing; Through the flat scraping mechanism, under the action of the air cylinder and the blade, the excess glue is scraped off to make the end face smoother;

[0057] Effect of laser edge-sealing: It is directly visible that the edge-sealing quality of the board is high, there are no glue lines, no residual glue, the board surface is clean, the color of the glue line is the same as that of the board surface and the edge-sealing strip, the edge-sealing strip is flat without concavity or convexity, seamless edge-sealing, and perfect edge-sealing;

[0058] Therefore, in the above process flow, in addition to the need to select the edge-sealing method, the subsequent trimming processes also need to be selected according to the actual situation. The selection of these processes for the edge-sealing process can be integrated into the information of the workpiece to be edge-sealed. The edge-sealing machine controls the start or standby of the mechanisms on the edge-sealing machine according to the information of the workpiece to be edge-sealed, enabling the edge-sealing machine to automatically execute the corresponding edge-sealing process on the workpiece to be edge-sealed, realizing intelligent edge-sealing. And the information of the workpiece to be edge-sealed is retained on the workpiece to be edge-sealed, and a workpiece edge-sealing database can be established. After the edge-sealing is completed, the edge-sealing situation of the workpiece can also be queried by obtaining the information of the workpiece to be edge-sealed to distinguish the edge-sealing method of the workpiece.

[0059] Advantages of the above technical solution: The edge banding machine can automatically control the edge banding process based on the information of the workpiece to be edge banded, and can automatically select the edge banding method corresponding to the workpiece to be edge banded to meet the edge banding requirements of workpieces in different ways, saving labor control costs. At the same time, after the edge banding is completed, the edge banding methods of the workpieces can be conveniently distinguished, facilitating the subsequent assembly of the plates, making the relatively delicate edge banding exposed outside, achieving an aesthetic effect while also saving costs.

[0060] In one embodiment, the information of the workpiece to be edge banded further includes: the number of the workpiece to be edge banded;

[0061] The specifications of the workpiece to be edge banded include: the length, width, height, and color of the workpiece to be edge banded;

[0062] The number of the workpiece to be edge banded is associated with the edge banding category and the specifications of the workpiece to be edge banded and stored in the edge banding machine.

[0063] Working principle and advantages of the above technical solution: The number of the workpiece to be edge banded includes the total number of the workpiece and its sub-numbers for each edge to be banded. For example, A-1, A-2, A-3, A-4, where "A" represents the workpiece, and "1", "2", "3", "4" respectively represent the four edges to be banded of the workpiece. The number of each workpiece to be edge banded is associated with the specifications of the workpiece to be edge banded and the edge banding category, and is stored in the database of the edge banding machine for subsequent retrieval and query to track the edge banding situation of the workpiece; the length and width of the workpiece to be edge banded are used to determine the edge banding length, the height of the workpiece to be edge banded is used to adjust the gap of the conveying channel, and the color of the workpiece to be edge banded is used to select the color of the edge banding strip.

[0064] In one embodiment, the S200 includes:

[0065] S210. Adjust the height of the upper conveying pressure roller of the conveying channel of the edge banding machine according to the height of the workpiece to be edge banded, so that the distance between the upper conveying pressure roller and the lower conveying pressure roller is suitable for conveying the workpiece to be edge banded;

[0066] S220. Convey the workpiece to be edge banded to the corresponding edge banding station on the conveying channel with adjusted distance according to the edge banding category;

[0067] S230. Before the edge banding station corresponding to the edge banding category performs the edge banding work, determine the edge banding length according to the length or width of the workpiece to be edge banded obtained, and select the edge banding tape of the corresponding color according to the color of the workpiece to be edge banded obtained.

[0068] Working principle and beneficial effects of the above technical solution: The conveying channel includes an upper conveying pressure roller and a lower conveying pressure roller, and the distance between the two can be adjusted according to the height of the workpiece to be edge-sealed to ensure that the workpiece to be edge-sealed does not slip on the conveying channel and affect the edge-sealing effect, ensuring the stability of conveying; after the conveying channel is adjusted, start the corresponding edge-sealing mechanism according to the edge-sealing category, and convey the workpiece to be edge-sealed to the corresponding edge-sealing mechanism for edge-sealing. Before edge-sealing, the edge-sealing length also needs to be determined according to the length or width of the workpiece to be edge-sealed, and the edge-sealing tape of the corresponding color is selected according to the color of the workpiece to be edge-sealed to ensure the aesthetics of edge-sealing. The entire edge-sealing process is automatically controlled according to the information of the workpiece to be edge-sealed obtained in advance.

[0069] In one embodiment, the S100 includes:

[0070] S110. Identify the target area of the workpiece to be edge-sealed;

[0071] S120. When the target area reaches the acquisition position, identify whether there is a classification label in the target area.

[0072] Wherein, the classification label is preset in the target area on the surface of the workpiece to be edge-sealed;

[0073] S130. If there is no classification label in the target area, an alarm prompt is issued. If there is a classification label in the target area, the information of the workpiece to be edge-sealed on the classification label is obtained.

[0074] Working principle and beneficial effects of the above technical solution: The edge-sealing conditions of each side of the workpiece to be edge-sealed are different. Therefore, multiple classification labels need to be set on the workpiece to be edge-sealed. In order to distinguish multiple classification labels on the same workpiece to be edge-sealed, first identify the target area of the edge to be edge-sealed of the current workpiece to be edge-sealed. Before that, classification labels have been pasted on the workpiece to be edge-sealed by a labeling machine, and the classification label identified in the target area is the edge-sealing information corresponding to this edge to be edge-sealed, preventing the wrong selection of the edge-sealing process for the current edge to be edge-sealed due to identifying other classification labels on the workpiece to be edge-sealed; when no classification label corresponding to the current edge to be edge-sealed is identified in the target area of the workpiece to be edge-sealed, an alarm prompt is issued to prevent waste of materials due to wrong edge-sealing of this side. If a classification label is identified in the target area, information is obtained to ensure the accuracy of edge-sealing.

[0075] In one embodiment, the S110 includes:

[0076] S111. Identify the edge line of the front side edge in the conveying direction of the workpiece to be edge-sealed;

[0077] S112. After the edge line of the front side edge reaches the specified position, identify the edge line of the edge to be edge-sealed of the workpiece to be edge-sealed;

[0078] Taking the intersection point of the side line of the front side and the side line to be edge-sealed as the origin, a plane coordinate system is established. A first point coordinate is marked at a first distance from the origin on the side line to be edge-sealed, and a second point coordinate is marked at a second distance from the origin on the side line of the front side. A first virtual side line parallel to the side line of the front side is drawn at the first point coordinate, and a second virtual side line parallel to the side line to be edge-sealed is drawn at the second point coordinate. The rectangular area formed by the side line of the front side, the side line to be edge-sealed, the first virtual side line, and the second virtual side line is the target area.

[0079] Working principle and beneficial effects of the above technical solution: The workpiece to be edge-sealed is conveyed and edge-sealed in the same conveying direction. If all four sides of the workpiece to be edge-sealed need to be edge-sealed, classification labels need to be pasted at the four corners on the same surface. Therefore, when edge-sealing a certain side, there will be multiple classification labels passing through the acquisition position along the conveying direction. To ensure the accuracy of acquiring the classification labels, the target area is first acquired before acquiring the classification labels. The classification labels within the target area correspond to the side to be edge-sealed. Therefore, the target area is locked on the side line of the front side in the conveying direction of the workpiece to be edge-sealed. As the workpiece to be edge-sealed moves, the side line of the front side will reach the specified position, and then the side line to be edge-sealed of the workpiece to be edge-sealed is immediately identified, and then a rectangular area is formed according to step S113. As Figure 4 shown, regardless of which side of the workpiece to be edge-sealed needs to be edge-sealed, the target area is locked here, and the first distance and the second distance are set according to the size of the classification label, which also prevents the classification label of the other side parallel to the current side to be edge-sealed from being identified, ensuring the accuracy of identification.

[0080] In one embodiment, the classification label is provided with a graphic identifier corresponding to the edge-sealing category, a barcode identifier corresponding to the specification of the workpiece to be edge-sealed, and a number identifier corresponding to the number of the workpiece to be edge-sealed;

[0081] The classification label is provided with a direction guide and an edge-sealing guide. The direction guide points to the front side in the conveying direction of the workpiece to be edge-sealed, and the edge-sealing guide points to the side to be edge-sealed of the workpiece to be edge-sealed.

[0082] Working principle and beneficial effects of the above technical solution: The graphic identifiers corresponding to the edge banding categories can adopt circular marks and triangular marks, corresponding to laser edge banding and hot melt adhesive edge banding respectively, which are convenient for identification and can also be visually recognized by people after edge banding, facilitating the subsequent assembly of sheet metal workpieces; the specifications adopt barcodes. After obtaining the barcodes, through the operation of the encoder, the workpiece specification information corresponding to the barcodes is obtained to control the edge banding process; the number identifiers can adopt two-dimensional codes or any form that is convenient for identification. After ensuring that the edge banding is completed, if you want to query the edge banding information, you can use a machine that scans two-dimensional codes to obtain the number information, and then through the number information, you can obtain any stored information related to the edge banding, facilitating people to obtain the edge banding situation; direction guidance and edge banding guidance are set on the classification labels, facilitating people to visually identify which edge banding the classification label corresponds to.

[0083] In one embodiment, obtaining the information of the workpiece to be edge banded on the classification label in S130 includes:

[0084] S131. Obtain the classification label image in the target area and preprocess the classification label image;

[0085] S132. Segment the preprocessed classification label image according to the graphic identifier position, barcode identifier position, and number identifier position in the classification label image to obtain a first area image corresponding to the graphic identifier, a second area image corresponding to the barcode identifier, and a third area image corresponding to the number identifier;

[0086] S133. Identify the graphic identifier in the first area image to obtain the edge banding category; identify the barcode identifier in the second area image to obtain the specification of the workpiece to be edge banded; identify the number identifier in the third area image to obtain the number of the workpiece to be edge banded;

[0087] S134. Associate and store the number of the workpiece to be edge banded with the edge banding category and the specification of the workpiece to be edge banded;

[0088] Among them, S132 includes:

[0089] Step 1. Pre-segment the preprocessed classification label image according to the graphic identifier position, barcode identifier position, and number identifier position in the classification label image to obtain three pre-segmented identification images;

[0090] Step 2. Detect the accuracy of the pre-segmentation results of the three identification images. The accuracy is obtained through the following formula:

[0091]

[0092] Among them, μ is the accuracy, and its value range is [0, 1], M is the type of identification, M + 1 is the total type including the background, and T ii is the number of pixels belonging to the i-th type of identification in the classification label image and belonging to the i-th type of identification in the three identification images after pre-segmentation, and T ij is the number of pixels belonging to the i-th type of identification in the classification label image and belonging to the j-th type of identification in the three identification images after pre-segmentation, and T ji is the number of pixels belonging to the j-th type of identification in the classification label image and belonging to the i-th type of identification in the three identification images after pre-segmentation;

[0093] If the accuracy is greater than the preset value, the three identification images after this pre-segmentation are used as the segmentation result images. If the accuracy is less than the preset value, the classification label image after preprocessing is pre-segmented again, and the above steps are repeated until the accuracy is greater than the preset value;

[0094] Step 3: Use the three identification images with an accuracy greater than the preset value as the first area image corresponding to the graphic identification, the second area image corresponding to the barcode identification, and the third area image corresponding to the number identification.

[0095] The working principle and beneficial effects of the above technical solution: Since the classification label contains multiple identifications and each identification needs to be recognized separately, after obtaining the image of the classification label, different identifications are segmented according to their positions, extracted separately, and then classified and recognized to obtain different information, preventing incorrect recognition or slow recognition speed; at the same time, in order to ensure the segmentation accuracy of the three identification images after segmentation, a judgment criterion is set to ensure that the information of the workpiece to be edge-sealed on the classification label can be obtained quickly, improving the accuracy and speed of information acquisition of the workpiece to be edge-sealed on the classification label.

[0096] In one embodiment, S230 includes: before the workpiece to be edge-sealed reaches the corresponding edge-sealing station, the number of the workpiece to be edge-sealed is obtained again, then the specifications and edge-sealing categories of the workpiece to be edge-sealed associated with the number are obtained together, the edge-sealing station is selected according to the edge-sealing category, the edge-sealing length is determined according to the length or width included in the specifications of the workpiece to be edge-sealed, and the edge-sealing tape of the corresponding color is selected according to the color included in the specifications of the workpiece to be edge-sealed.

[0097] Working principle and beneficial effects of the above technical solution: Since multiple workpieces to be edge-sealed are conveyed simultaneously on the production line of the edge-sealing machine, information is acquired before the workpieces to be edge-sealed enter the conveying channel of the production line. Before the workpieces to be edge-sealed reach the edge-sealing station, the edge parts of the workpieces are cut by a pre-milling mechanism. The edge-sealing station needs to acquire the information of the upcoming workpieces again. Therefore, a device for acquiring numbers is arranged after the pre-milling mechanism. At this time, only the numbers on the classification label need to be identified to quickly retrieve the edge-sealing information associated with the numbers, and then the edge-sealing station is selected and the edge-sealing process is adjusted according to the edge-sealing information to ensure the accuracy and speed of edge-sealing, so that the edge-sealing process can proceed orderly.

[0098] In one embodiment, after all edge-sealing processes of the workpiece to be edge-sealed are completed, the number information of the workpiece to be edge-sealed is acquired, and the workpiece to be edge-sealed is conveyed to the quality inspection station.

[0099] The quality inspection steps of the workpiece to be edge-sealed include:

[0100] Acquire the image of the edge to be inspected of the workpiece to be edge-sealed;

[0101] Perform image segmentation on the image of the edge to be inspected to obtain multiple segmented images;

[0102] Perform the first feature extraction on multiple segmented images to obtain a feature matrix A including the features of multiple segmented images. Perform the second feature extraction on the features of multiple segmented images in the feature matrix A to obtain a feature matrix B including the features of multiple segmented images. Fuse the features of multiple segmented images in the feature matrix B to obtain defect features. Convolve the defect features to obtain a three-dimensional defect feature map. Calculate the number of channels of multiple pixel points in the three-dimensional defect feature map respectively to obtain the probabilities that multiple pixel points in the image of the edge to be inspected are defect regions.

[0103] According to the probability that each pixel point is a defect region, identify the suspected regions in the image of the edge to be inspected;

[0104] If no suspected regions are identified, it is considered that the image of the edge to be inspected does not include defect regions, and the quality inspection result of the workpiece to be edge-sealed is qualified. Then, the workpiece to be edge-sealed is conveyed to the qualified product area, and the qualified information is associated with the number information and stored.

[0105] If suspected regions are identified, perform connected component analysis on the suspected regions to obtain the defect regions in the image of the edge to be inspected. The quality inspection result of the workpiece to be edge-sealed is unqualified. Then, the workpiece to be edge-sealed is conveyed to the unqualified product area, and the unqualified information is associated with the number information and stored.

[0106] Working principle and beneficial effects of the above technical solution: In this embodiment, the quality of the edges of the workpiece after edge sealing is mainly detected. Since different edge sealing methods are used for the workpiece, usually the appearance of laser edge sealing is more beautiful and the edge sealing effect is better, while the appearance of hot melt adhesive edge sealing is inferior to that of laser edge sealing. Therefore, different detection standards should be set for the detection of the two types of edge sealing. The above method uses the probability of each pixel point being a defective area to identify the suspected areas in the image of the edge to be detected. Therefore, different identification standards for suspected areas should be set according to different edge sealing categories, and it is necessary to know the edge sealing information of the workpiece before detection, which can also be obtained only by identifying the serial number information. After the detection is completed, the detection result is associated with the serial number and stored to distinguish the workpieces after detection;

[0107] Among them, for the workpieces in the non-conforming product area, if the edges of multiple sides have been edge-sealed and it is impossible to observe with the naked eye which edge fails the quality inspection, the information can be obtained by identifying the serial number at this time. In the database of the edge-sealing machine, the edge-sealing information corresponding to the serial number can be retrieved. For example, information such as the type of edge sealing and the qualification status of edge sealing can be queried, which is convenient for re-edge-sealing a certain edge without re-edge-sealing multiple edges of the entire workpiece, accurately grasping the edge-sealing result, and reducing the waste of the board.

[0108] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. An automatic edge banding method for an edge banding machine based on machine recognition, characterized in that, Including: S100. Obtain the information of the workpiece to be edge-sealed, where the information of the workpiece to be edge-sealed includes the specifications of the workpiece to be edge-sealed and the edge-sealing category applicable thereto; S200. Convey the workpiece to be edge-sealed to the corresponding edge-sealing station according to the specifications of the workpiece to be edge-sealed and the edge-sealing category for edge-sealing; The information of the workpiece to be edge-sealed further includes: the number of the workpiece to be edge-sealed; The specifications of the workpiece to be edge-sealed include: the length, width, height and color of the workpiece to be edge-sealed; The number of the workpiece to be edge-sealed is associated with the edge-sealing category and the specifications of the workpiece to be edge-sealed and stored in the edge-sealing machine; The S100 includes: S110. Identify the target area of the workpiece to be edge-sealed; S120. When the target area reaches the acquisition position, identify whether there is a classification label in the target area, wherein, the classification label is preset in the target area on the surface of the workpiece to be edge-sealed; S130. If there is no classification label in the target area, issue an alarm prompt. If there is a classification label in the target area, obtain the information of the workpiece to be edge-sealed on the classification label; The S110 includes: S111. Identify the edge line of the front side of the conveying direction of the workpiece to be edge-sealed; S112. After the edge line of the front side reaches the specified position, identify the edge line to be edge-sealed of the workpiece to be edge-sealed; S113. Establish a plane coordinate system with the intersection point of the edge line of the front side and the edge line to be edge-sealed as the origin. Mark the first point coordinate at a first distance from the origin on the edge line to be edge-sealed, mark the second point coordinate at a second distance from the origin on the edge line of the front side, draw a first virtual edge line parallel to the edge line of the front side at the first point coordinate, and draw a second virtual edge line parallel to the edge line to be edge-sealed at the second point coordinate. The rectangular area formed by the edge line of the front side, the edge line to be edge-sealed, the first virtual edge line and the second virtual edge line is the target area.

2. The automatic edge banding method for an edge banding machine based on machine recognition according to claim 1, characterized in that, The S200 includes: S210. Adjust the height of the upper conveying pressure roller of the conveying channel of the edge-sealing machine according to the height of the workpiece to be edge-sealed, so that the distance between the upper conveying pressure roller and the lower conveying pressure roller is suitable for conveying the workpiece to be edge-sealed; S220. Convey the workpiece to be edge-sealed to the corresponding edge-sealing station on the conveying channel with the adjusted distance according to the edge-sealing category; S230. Before the edge-sealing station corresponding to the edge-sealing category performs the edge-sealing work, determine the edge-sealing length according to the obtained length or width of the workpiece to be edge-sealed, and select the edge-sealing tape of the corresponding color according to the obtained color of the workpiece to be edge-sealed.

3. The automatic edge banding method for an edge banding machine based on machine recognition according to claim 1, characterized in that, The classification label is provided with a graphic identifier corresponding to the edge-sealing category, a bar code identifier corresponding to the specifications of the workpiece to be edge-sealed, and a number identifier corresponding to the number of the workpiece to be edge-sealed; The classification label is provided with a direction guide and an edge-sealing guide. The direction guide points to the front side of the conveying direction of the workpiece to be edge-sealed, and the edge-sealing guide points to the edge to be edge-sealed of the workpiece to be edge-sealed.

4. The automatic edge banding method for an edge banding machine based on machine recognition according to claim 3, characterized in that, The obtaining of the information of the workpiece to be edge-sealed on the classification label in the S130 includes: S131. Obtain the classification label image in the target area and preprocess the classification label image; S132. Segment the preprocessed classification label image according to the graphic identification position, barcode identification position, and number identification position in the classification label image to obtain a first region image corresponding to the graphic identification, a second region image corresponding to the barcode identification, and a third region image corresponding to the number identification; S133. Identify the graphic identification in the first region image to obtain the edge sealing category; identify the barcode identification in the second region image to obtain the specifications of the workpiece to be edge-sealed; identify the number identification in the third region image to obtain the number of the workpiece to be edge-sealed; S134. Associate and store the number of the workpiece to be edge-sealed with the edge sealing category and the specifications of the workpiece to be edge-sealed.

5. The automatic edge banding method for an edge banding machine based on machine recognition according to claim 1, characterized in that, The edge sealing station includes a laser edge sealing station and a hot melt adhesive edge sealing station.

6. The automatic edge banding method for an edge banding machine based on machine recognition according to claim 2, characterized in that, The S230 includes: before the workpiece to be edge-sealed reaches the corresponding edge sealing station, obtain the number of the workpiece to be edge-sealed again, then obtain the specifications and edge sealing category of the workpiece to be edge-sealed associated with the number, select the edge sealing station according to the edge sealing category, determine the edge sealing length according to the length or width included in the specifications of the workpiece to be edge-sealed, and select the edge sealing tape of the corresponding color according to the color included in the specifications of the workpiece to be edge-sealed.

7. The automatic edge banding method for an edge banding machine based on machine recognition according to claim 1, characterized in that, After all edge sealing processes of the workpiece to be edge-sealed are completed, obtain the number information of the workpiece to be edge-sealed, and convey the workpiece to be edge-sealed to the quality inspection station. The quality inspection steps of the workpiece to be edge-sealed include: Obtain the image of the edge to be inspected of the workpiece to be edge-sealed; Perform image segmentation on the image of the edge to be inspected to obtain a plurality of segmented images; Perform first feature extraction on the plurality of segmented images to obtain a feature matrix A including the features of the plurality of segmented images, perform second feature extraction on the features of the plurality of segmented images in the feature matrix A respectively to obtain a feature matrix B including the features of the plurality of segmented images, fuse the features of the plurality of segmented images in the feature matrix B to obtain defect features, perform convolution on the defect features to obtain a three-dimensional defect feature map, and calculate the number of channels of the plurality of pixel points in the three-dimensional defect feature map respectively to obtain the probability that each of the plurality of pixel points in the image of the edge to be inspected is a defect region; Identify the suspected region in the image of the edge to be inspected according to the probability that each pixel point is a defect region; If no suspected region is identified, it is considered that the image of the edge to be inspected does not include a defect region, the quality inspection result of the workpiece to be edge-sealed is qualified, then convey the workpiece to be edge-sealed to the qualified product area, and associate and store the qualified information with the number information; If a suspected region is identified, perform connected component analysis on the suspected region to obtain the defect region in the image of the edge to be inspected, the quality inspection result of the workpiece to be edge-sealed is unqualified, then convey the workpiece to be edge-sealed to the unqualified product area, and associate and store the unqualified information with the number information.

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