Automatic rubberizing equipment for cup and kettle openings and control method of automatic rubberizing equipment

Abstract

The invention relates to the technical field of rubberizing equipment, in particular to cup and kettle mouth automatic rubberizing equipment and a control method thereof.The cup and kettle mouth automatic rubberizing equipment comprises a rack, a mounting plate is arranged on the rack, a motor fixing frame is fixedly mounted on the mounting plate, and a stepping motor is fixedly mounted on the motor fixing frame; the output end of the stepping motor is connected with one end of a plum coupling in a matched mode, the other end of the plum coupling is connected with a rotating shaft in a matched mode, and a clamp sleeve is fixedly connected to the rotating shaft. Two sliding rods are further fixedly mounted on the mounting plate, the two sliding rods are sleeved with linear bearings, a fixing plate is fixedly mounted on the linear bearings, and a first telescopic air cylinder is fixedly mounted on the fixing plate. And the rubberizing width can be increased to a greater extent, so that the equipment can meet more production requirements, and the practicability is better.

Description

Technical Field

[0001] This invention relates to the field of adhesive application equipment technology, and in particular to an automatic adhesive application device for cups and kettles and its control method. Background Technology

[0002] Cups and kettles are common household items. During their manufacturing process, they typically undergo surface painting to enhance their corrosion and rust resistance. However, for some products, the rims of the cups and kettles do not require painting to prevent direct contact of paint with the user's mouth, thus ensuring food safety. Therefore, to achieve localized painting, the current solution is to apply tape to the rims and other unpainted areas before painting. This tape then covers these areas during the painting process, preventing paint from being applied to them. Currently, applying tape to cups and kettles is mostly done manually or semi-automatically. The tape is manually applied and then cut with scissors. This process is susceptible to human error, resulting in inconsistent quality after tape application. Consequently, painted cups and kettles often fail to meet production requirements, significantly increasing scrap costs and reducing economic efficiency. Summary of the Invention

[0003] This invention overcomes the shortcomings of the prior art and provides an automatic adhesive applicator for cups and kettles and its control method.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] This invention discloses an automatic adhesive applicator for cups and kettles, comprising a frame, an mounting plate on the frame, a motor mounting bracket fixedly mounted on the mounting plate, a stepper motor fixedly mounted on the motor mounting bracket, the output end of the stepper motor being connected to one end of a perforated coupling, the other end of the perforated coupling being connected to a rotating shaft, a clamp sleeve fixedly connected to the rotating shaft; two sliding rods are also fixedly mounted on the mounting plate, linear bearings are fitted on the two sliding rods, a fixing plate is fixedly mounted on the linear bearings, a first telescopic cylinder is fixedly mounted on the fixing plate, the output end of the first telescopic cylinder is connected to a first telescopic rod, a fixing clamp is fixedly connected to the first telescopic rod;

[0006] The mounting plate has four sets of sliding cylinders at preset positions. Each sliding cylinder is slidably connected to a light rod. One end of the light rod is fixedly connected to an adjustment plate. An internal hexagonal head shoulder screw is fixedly installed on the adjustment plate. The internal hexagonal head shoulder screw is connected to the inner ring of a deep groove ball bearing. The outer ring of the deep groove ball bearing is connected to a rotating plate. The deep groove ball bearing allows the rotating plate to rotate around the internal hexagonal head shoulder screw.

[0007] The end of the hexagonal socket head cap screw is fixedly connected to a first lead screw, which is engaged with the inner ring of a first bearing, and the outer ring of the first bearing is engaged with a first guide wheel; a second lead screw is provided on the rotating plate, which is engaged with the inner ring of a second bearing, and the outer ring of the second bearing is engaged with a second guide wheel; a fixed shaft is also provided on the rotating plate, which is engaged with the inner ring of a third bearing, and the outer ring of the third bearing is engaged with a rubber-coated roller.

[0008] Preferably, in a preferred embodiment of the present invention, a positioning strip is fixedly connected to the bottom of the adjusting plate, an adjusting groove is provided on the positioning strip, a slider is connected to the adjusting groove, a fixing hole is provided on the slider, a fixing bolt is fitted into the fixing hole, a double-ear fixing seat is provided on the slider, a second telescopic cylinder is fixedly installed on the double-ear fixing seat, a second telescopic rod is connected to the output end of the second telescopic cylinder, a Y-shaped connector is fixedly connected to the second telescopic rod, a single-ear fixing seat is provided on the rotating plate, and the Y-shaped connector is hinged to the single-ear fixing seat.

[0009] Preferably, in a preferred embodiment of the present invention, the mounting plate is further provided with a support rod, a round rod is fixedly connected to the support rod, a rubber sleeve is fitted on the round rod, and clamping fixing rings are provided on both sides of the rubber sleeve.

[0010] Preferably, in a preferred embodiment of the present invention, a first optical axis is provided on the rotating plate, and two first limiting blocks are provided on the first optical axis at a preset interval, forming a first limiting area between the two first limiting blocks; a second optical axis is provided on the rotating plate, and two second limiting blocks are provided on the second optical axis at a preset interval, forming a second limiting area between the two second limiting blocks.

[0011] Preferably, in a preferred embodiment of the present invention, the frame is further provided with a support mechanism, the support structure includes an L-shaped support column, a first chain plate is fixedly connected to the L-shaped support column, a first dual-axis cylinder is fixedly installed on the first chain plate, the output end of the first dual-axis cylinder is connected to a first push-pull rod, the end of the first push-pull rod is fixedly connected to a connecting block, and two clamps are provided at both ends of the connecting block.

[0012] Preferably, in a preferred embodiment of the present invention, the frame is further provided with a cutting mechanism, the cutting mechanism including a cross support column, a second chain plate fixedly connected to the cross support column, a second dual-axis cylinder fixedly installed on the second chain plate, a second push-pull rod connected to the output end of the second dual-axis cylinder, a blade holder fixedly connected to the end of the second push-pull rod, and a cutting blade detachably connected to the blade holder.

[0013] Preferably, in a preferred embodiment of the present invention, a lead screw bushing is provided on the mounting plate, and a front and rear lead screw are helically connected to the lead screw bushing. A rotating handle is connected to one end of the front and rear lead screws, and the other end of the front and rear lead screws is connected to the inner ring of the fourth bearing. The outer ring of the fourth bearing is connected to the adjusting plate.

[0014] Preferably, in a preferred embodiment of the present invention, a camera mechanism is further provided on the frame.

[0015] Another aspect of the present invention discloses a control method for an automatic adhesive applicator for cup and kettle spouts, applicable to any of the automatic adhesive applicators for cup and kettle spouts described in any one of the claims, comprising the following steps:

[0016] The system acquires historical defective product images corresponding to products when defects occur through big data networks, processes these images to obtain processed historical defective product images, classifies these processed images to obtain classified historical defective product images, constructs a database, and maps the classified historical defective product images to different category spaces in the database to obtain a feature database.

[0017] After the adhesive is applied to each product by the adhesive applicator, the product image is captured by the camera and the product image is processed to obtain the processed product image. The processed product image is then corrected to obtain the corrected product image.

[0018] One historical defective product image is extracted from each of the different category spaces in the feature database, and the extracted historical defective product images are aggregated to obtain a comparison image set. The similarity between the corrected product image and each historical defective product image in the comparison image set is obtained by grey relational analysis, and several similarity scores are obtained.

[0019] The similarity scores are compared with a preset similarity score. If none of the similarity scores are greater than the preset similarity score, the product after adhesive application is determined to be a qualified product. If at least one similarity score is greater than the preset similarity score, the product after adhesive application is determined to be a defective product.

[0020] Preferably, in a preferred embodiment of the present invention, the processed product image is corrected to obtain a corrected product image, specifically as follows:

[0021] Feature extraction is performed on the processed product image to obtain several feature matching points. The feature matching points are then linearly transformed to obtain the feature vector corresponding to the image.

[0022] An analytical model is constructed based on a convolutional neural network, and the feature vectors are imported into the analytical model for analysis to obtain a set of vector components.

[0023] The maximum and minimum vector components in the vector component set are selected as the basis for construction, and a vector coordinate system is constructed based on the basis.

[0024] Import all vector components in the vector component set into the vector coordinate system, obtain the coordinate point information of each vector component in the vector coordinate system, and generate a coordinate point information set based on the coordinate point information;

[0025] Obtain the camera coordinate system corresponding to the camera mechanism, import the set of coordinate point information into the camera coordinate system, and recombine the set of coordinate point information in the camera coordinate system to generate the corrected product image.

[0026] This invention addresses the technical deficiencies in the prior art and offers the following advantages: The equipment automatically applies tape to the mouth of cups and kettles, preventing inconsistent tape application quality, significantly reducing defect rates, lowering scrap costs, and improving production efficiency. Furthermore, the horizontal tape application method allows for a wider tape application width compared to the traditional vertical method, enabling the equipment to meet more production needs and improving its practicality. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a first three-dimensional structural diagram of the adhesive application equipment;

[0029] Figure 2 This is a schematic diagram of the second three-dimensional structure of the adhesive application equipment;

[0030] Figure 3 This is a schematic diagram of the third-dimensional structure of the adhesive application equipment;

[0031] Figure 4 This is a schematic diagram of the fourth three-dimensional structure of the adhesive application equipment;

[0032] Figure 5 This is a schematic diagram of the support mechanism in this adhesive application equipment;

[0033] Figure 6This is a schematic diagram of the cutting mechanism in this adhesive applicator;

[0034] The reference numerals in the attached drawings are explained as follows: 101, frame; 102, mounting plate; 103, motor mounting bracket; 104, stepper motor; 105, plum blossom coupling; 106, rotating shaft; 107, clamp sleeve; 108, slide rod; 109, linear bearing; 201, fixing plate; 202, first telescopic cylinder; 203, fixed clamp; 204, slide cylinder; 205, smooth rod; 206, adjusting plate; 207, hexagonal socket head cap screw; 208, deep groove ball bearing; 209, rotating plate; 301, first lead screw; 302, first bearing; 303, first guide wheel; 304, second lead screw; 305, second bearing; 306, second guide wheel; 307, fixed shaft; 308, third bearing; 309, rubber-coated roller; 401, positioning strip; 402, adjusting groove; 4 03. Slider; 404. Fixing hole; 405. Double-ear fixing seat; 406. Second telescopic cylinder; 407. Second telescopic rod; 408. Y-shaped connector; 409. Single-ear fixing seat; 501. Support rod; 502. Round rod; 503. Rubber sleeve; 504. Clamping fixing ring; 505. First optical axis; 506. First limiting block; 507. Second optical axis; 508. Second limiting block; 509. L-shaped support column; 601. First chain plate; 602. First double-axis cylinder; 603. First push-pull rod; 604. Connecting block; 605. Clamp; 606. Cross support column; 607. Second chain plate; 608. Second double-axis cylinder; 609. Second push-pull rod; 701. Blade holder; 702. Lead screw bushing; 703. Front and rear lead screws; 704. Rotating handle. Detailed Implementation

[0035] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner. Therefore, they only show the components related to the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0036] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0039] This invention discloses an automatic adhesive applicator for cup and kettle spouts, such as... Figure 1 , 2As shown, the system includes a frame 101, on which a mounting plate 102 is provided. A motor mounting bracket 103 is fixedly mounted on the mounting plate 102, and a stepper motor 104 is fixedly mounted on the motor mounting bracket 103. The output end of the stepper motor 104 is connected to one end of a perforated coupling 105, and the other end of the perforated coupling 105 is connected to a rotating shaft 106. A clamp sleeve 107 is fixedly connected to the rotating shaft 106. Two sliding rods 108 are also fixedly mounted on the mounting plate 102. Linear bearings 109 are fitted on the two sliding rods 108. A fixing plate 201 is fixedly mounted on the linear bearings 109. A first telescopic cylinder 202 is fixedly mounted on the fixing plate 201. The output end of the first telescopic cylinder 202 is connected to a first telescopic rod, and a fixing clamp 203 is fixedly connected to the first telescopic rod.

[0040] It should be noted that, firstly, the clamp sleeve 107 is fitted with an elastic rubber ring, and the outer diameter of the elastic rubber ring is slightly smaller than or equal to the inner diameter of the cup / pot opening. When the cup / pot is in contact with the clamp sleeve 107, the elastic rubber ring can clamp the cup / pot, so that when the stepper motor 104 drives the clamp sleeve 107 to rotate, the clamp sleeve 107 can drive the cup / pot to rotate. Preferably, anti-slip textures can be provided on the elastic rubber ring to improve friction. It is also worth mentioning that the inner diameter of the fixing clamp 203 should be larger than the outer diameter of the bottom of the cup / pot, so that when the cup / pot is limited by the clamp sleeve 107 and the fixing clamp 203, the stepper motor 104 can drive the cup / pot to rotate smoothly.

[0041] like Figure 3 , 4 As shown, four sets of sliding cylinders 204 are provided on the mounting plate 102 at preset positions. Each sliding cylinder 204 is slidably connected to a smooth rod 205. One end of the smooth rod 205 is fixedly connected to an adjusting plate 206. An internal hexagonal head shoulder screw 207 is fixedly installed on the adjusting plate 206. The internal hexagonal head shoulder screw 207 is engaged with the inner ring of a deep groove ball bearing 208. The outer ring of the deep groove ball bearing 208 is engaged with a rotating plate 209. The deep groove ball bearing 208 enables the rotating plate 209 to rotate around the internal hexagonal head shoulder screw 207.

[0042] The end of the hexagonal head shoulder screw 207 is fixedly connected to a first lead screw 301, which is engaged with the inner ring of the first bearing 302, and the outer ring of the first bearing 302 is engaged with the first guide wheel 303. A second lead screw 304 is provided on the rotating plate 209, which is engaged with the inner ring of the second bearing 305, and the outer ring of the second bearing 305 is engaged with the second guide wheel 306. A fixed shaft 307 is also provided on the rotating plate 209, which is engaged with the inner ring of the third bearing 308, and the outer ring of the third bearing 308 is engaged with a rubber-coated roller 309.

[0043] A positioning strip 401 is fixedly connected to the bottom of the adjusting plate 206. An adjusting groove 402 is provided on the positioning strip 401. A slider 403 is connected to the adjusting groove 402. A fixing hole 404 is provided on the slider 403. A fixing bolt is fitted into the fixing hole 404. A double-ear fixing seat 405 is provided on the slider 403. A second telescopic cylinder 406 is fixedly installed on the double-ear fixing seat 405. A second telescopic rod 407 is connected to the output end of the second telescopic cylinder 406. A Y-shaped connector 408 is fixedly connected to the second telescopic rod 407. A single-ear fixing seat 409 is provided on the rotating plate 209. The Y-shaped connector 408 is hinged to the single-ear fixing seat 409.

[0044] It should be noted that an adjustment groove 402 is provided on the positioning strip 401 so that the device can apply adhesive to cups and kettles of various sizes. For example, when applying adhesive to cups and kettles with larger diameters, the fixing bolt can be loosened, and then the slider 403 can be pulled along the left side of the adjustment groove 402 so that the slider 403 moves away from the adjustment plate 206. After sliding to the appropriate position, the fixing bolt can be tightened. This structure ensures that when applying adhesive to cups and kettles with larger diameters, the adhesive roller 309 can maintain a sufficient distance from the clamp sleeve 107, allowing the cups and kettles to be fed smoothly. It also ensures that the tape wrapped on the adhesive roller 309 will not stick to the cups and kettles during the feeding process, thereby improving the reliability of the device.

[0045] The mounting plate 102 is also provided with a support rod 501, a round rod 502 is fixedly connected to the support rod 501, a rubber sleeve 503 is fitted on the round rod 502, and clamping fixing rings 504 are provided on both sides of the rubber sleeve 503.

[0046] It should be noted that when it is necessary to adjust the lateral position of the adhesive sleeve 503, the clamping retaining ring 504 can be loosened, and then the adhesive sleeve 503 can be slid along the round rod 502 to adjust the adhesive sleeve 503 to a suitable position to adjust the degree of tape offset and meet the needs of more adhesive application situations.

[0047] The rotating plate 209 is provided with a first optical axis 505, and two first limiting blocks 506 are arranged on the first optical axis 505 at a preset interval, forming a first limiting area between the two first limiting blocks 506. The rotating plate 209 is provided with a second optical axis 507, and two second limiting blocks 508 are arranged on the second optical axis 507 at a preset interval, forming a second limiting area between the two second limiting blocks 508. It should be noted that the first and second limiting areas can limit the tape, preventing the tape from shifting position during the rotation and wrapping of the cup or kettle, thus improving the reliability and stability of the adhesive application process.

[0048] like Figure 5 , 6 As shown, the frame 101 is also equipped with a support mechanism. The support structure includes an L-shaped support column 509, on which a first chain plate 601 is fixedly connected. A first dual-axis cylinder 602 is fixedly mounted on the first chain plate 601. The output end of the first dual-axis cylinder 602 is connected to a first push-pull rod 603. The end of the first push-pull rod 603 is fixedly connected to a connecting block 604. Two clamps 605 are provided at both ends of the connecting block 604. It should be noted that the clamps 605 are detachably connected to the connecting block 604. Multiple sets of clamps 605 are provided, and each set of clamps 605 is matched with cups and pots of different sizes.

[0049] like Figure 5 , 6 As shown, the frame 101 is also equipped with a cutting mechanism, which includes a cross support column 606. A second chain plate 607 is fixedly connected to the cross support column 606. A second dual-axis cylinder 608 is fixedly installed on the second chain plate 607. A second push-pull rod 609 is connected to the output end of the second dual-axis cylinder 608. A blade holder 701 is fixedly connected to the end of the second push-pull rod 609. A cutting blade is detachably connected to the blade holder 701.

[0050] The mounting plate 102 is provided with a lead screw bushing 702, on which front and rear lead screws 703 are spirally connected. One end of the front and rear lead screws 703 is connected to a rotating handle 704, and the other end of the front and rear lead screws 703 is connected to the inner ring of a fourth bearing. The outer ring of the fourth bearing is connected to the adjusting plate 206. It should be noted that this device can apply adhesive to any area of ​​the cup or kettle. For example, when applying adhesive to the middle area of ​​the cup or kettle, the rotating handle 704 can be turned, causing the front and rear lead screws 703 to rotate. This causes the lead screws 703 to rotate along the lead screw bushing 702, pushing the adjusting plate 206 away from the mounting plate 102. This moves the adhesive roller 309 to the middle area of ​​the cup or kettle, allowing the device to apply adhesive to the middle area, thus improving its versatility and practicality.

[0051] The frame 101 is also equipped with a camera mechanism. It should be noted that the camera mechanism is an industrial camera.

[0052] It should be noted that the control principle and working process of this adhesive applicator are as follows: First, the adhesive tape roll is inserted into the clamp, and the tape head is pulled to pass the tape sequentially around the first guide roller 303 and the second guide roller 306, thereby maintaining the tape in an "S" shape to increase the tape tension and tighten the tape. Then, the tape head is placed on the coating roller 309, with the adhesive side of the tape facing the outside of the coating roller 309, thus completing the tape roll loading process. Next, the robotic arm places the product to be adhesiveped (cup or kettle) onto the clamp 605. Then, the first dual-axis cylinder 602 is activated, causing the first push-pull rod 603 to extend a certain distance, thus pushing the product to be adhesiveped onto the clamp 605 to a preset position. Then, the first telescopic cylinder 202 is driven, causing the first telescopic rod to extend a certain distance, thus pushing the fixed clamp 203 to the preset position. During the process, the fixed clamp 203 will align with the tail of the product to be glued (the base of the cup or kettle), and after the alignment, it will continue to push the product to be glued to move, so that the head of the product to be glued (the mouth of the cup or kettle) aligns with the clamp sleeve 107. At this time, the clamp sleeve 107 and the fixed clamp 203 restrict the X and Z axis degrees of freedom of the product to be glued, so that the product to be glued can only rotate around the Y axis. Then, the first dual-axis cylinder 602 is reset, thereby completing the loading process of the product to be glued. Then, the second telescopic cylinder 406 is activated, which in turn drives the second telescopic rod 407 to extend a certain distance. During this process, the second telescopic rod 407 pushes the rotating plate 209 to rotate around the hexagonal head shoulder screw 207 at a certain angle, so that the adhesive roller 309 is pressed tightly against the preset adhesive area of ​​the product to be adhesiveped. At this time, the sticky side of the tape (i.e., the side with glue) will be in close contact with the product to be adhesiveped. Then, the stepper motor 104 is activated and rotates a preset number of times, which drives the clamp sleeve 107 to rotate a preset number of times, thereby driving the product to be adhesiveped to rotate a preset number of times. This causes the tape to be smoothly wound along the preset adhesive area (i.e., the cup or kettle rim area) of the product to be adhesiveped, so as to wrap and stick the tape to the preset adhesive area of ​​the product to be adhesiveped. Next, the second dual-axis cylinder 608 is activated, which in turn drives the second push-pull rod 609 to extend a certain distance, causing the cutting blade to rise a preset distance to cut the tape, thus completing the material cutting function. Then, the second dual-axis cylinder 608 and the second telescopic cylinder 406 are reset. The camera mechanism is then controlled to capture an image of the product after adhesive application to determine whether the product is qualified. If qualified, the robot arm is controlled to unload the product and transfer it to the next production station (painting station). If unqualified, the robot arm is controlled to unload the product and transfer it to the rework station to remove the adhesive and rework it. This completes the entire automatic adhesive application process.In summary, this equipment can automatically apply tape to the rims of cups and kettles, avoiding inconsistent tape application quality, greatly reducing the defect rate, thereby lowering scrap costs and improving production efficiency. Furthermore, this equipment uses a horizontal tape application method, which, compared to the traditional vertical tape application method, can significantly increase the tape application width, allowing the equipment to meet more production needs and offering better practicality.

[0053] Another aspect of the present invention discloses a control method for an automatic adhesive applicator for cup and kettle spouts, applicable to any of the automatic adhesive applicators for cup and kettle spouts described in any one of the claims, comprising the following steps:

[0054] The system acquires historical defective product images corresponding to products when defects occur through big data networks, processes these images to obtain processed historical defective product images, classifies these processed images to obtain classified historical defective product images, constructs a database, and maps the classified historical defective product images to different category spaces in the database to obtain a feature database.

[0055] After the adhesive is applied to each product by the adhesive applicator, the product image is captured by the camera and the product image is processed to obtain the processed product image. The processed product image is then corrected to obtain the corrected product image.

[0056] One historical defective product image is extracted from each of the different category spaces in the feature database, and the extracted historical defective product images are aggregated to obtain a comparison image set. The similarity between the corrected product image and each historical defective product image in the comparison image set is obtained by grey relational analysis, and several similarity scores are obtained.

[0057] The similarity scores are compared with a preset similarity score. If none of the similarity scores are greater than the preset similarity score, the product after adhesive application is determined to be a qualified product. If at least one similarity score is greater than the preset similarity score, the product after adhesive application is determined to be a defective product.

[0058] It should be noted that during the production process, when the adhesive applicator produces defective products, images of these defective products are captured and uploaded to a shared database, thus forming a big data network shared database. Therefore, in this invention, the images corresponding to all defective products produced by the adhesive applicator in the historical production process (i.e., historical defective product images corresponding to products when defects occurred) are first retrieved from the big data network shared database. The retrieved historical defective product images are then categorized, such as into images of adhesive wrinkles, images of excessively long adhesive, images of excessively short adhesive, and images of poorly cut adhesive, thus obtaining a characteristic database. This characteristic database contains multiple storage spaces. Images of historical defective products of the same category are then stored in the same storage space, forming multiple category spaces. For example, images of adhesive wrinkles are all stored in the same storage space. Then, during the real-time production process of this adhesive applicator, after the adhesive applicator finishes applying adhesive to a product, it takes a picture of the product after adhesive application using a camera. The picture of the product is then compared with historical defective product images in the characteristic data. If at least one similarity is greater than the preset similarity, it means that the picture of the product is highly consistent with at least one historical defective product image in the characteristic database. In this case, it can be concluded that the product after adhesive application is a defective product, such as poor adhesive application wrinkles or excessive adhesive application length. The product after adhesive application is then judged as an unqualified product. In summary, after the adhesive is applied to the product using the adhesive applicator, this method enables fully automated quality inspection of each product after adhesive application. This automatically detects whether the product quality is acceptable and promptly removes and reworks defective products, preventing them from continuing into subsequent processes (i.e., painting). This avoids situations where rework is impossible after painting and reduces product scrap rate. The step of constructing a comparison image set by extracting one historical defective product image from each category space of the characteristic database, and then comparing the product image with these historical defective product images, aims to reduce the computational load during detection, thereby improving system speed and robustness. Since the defect types within the same category space are identical, only one historical defective product image needs to be randomly extracted from the same category space, and then the product image needs to be compared with these extracted historical defective product images. For example, if the product image is highly similar to a historical defective product image in the adhesive wrinkle defect category space, it can be concluded that the product has an adhesive wrinkle defect.

[0059] Preferably, in a preferred embodiment of the present invention, the processed product image is corrected to obtain a corrected product image, specifically as follows:

[0060] Feature extraction is performed on the processed product image to obtain several feature matching points. The feature matching points are then linearly transformed to obtain the feature vector corresponding to the image.

[0061] An analytical model is constructed based on a convolutional neural network, and the feature vectors are imported into the analytical model for analysis to obtain a set of vector components.

[0062] The maximum and minimum vector components in the vector component set are selected as the basis for construction, and a vector coordinate system is constructed based on the basis.

[0063] Import all vector components in the vector component set into the vector coordinate system, obtain the coordinate point information of each vector component in the vector coordinate system, and generate a coordinate point information set based on the coordinate point information;

[0064] Obtain the camera coordinate system corresponding to the camera mechanism, import the set of coordinate point information into the camera coordinate system, and recombine the set of coordinate point information in the camera coordinate system to generate the corrected product image.

[0065] It should be noted that due to factors such as shooting angle and shooting environment, product images acquired through camera mechanisms have significant redundancy and high blurriness of image boundaries. This method can reconstruct and correct the captured product images to reduce image redundancy and blurriness, improve image quality, enhance the accuracy of subsequent product inspection, and improve the reliability of inspection results.

[0066] Furthermore, image processing is performed on the historical defective product images to obtain processed historical defective product images. These processed images are then classified to obtain classified historical defective product images. A database is constructed, and the classified historical defective product images are mapped to different category spaces within the database to obtain a feature database. Specifically:

[0067] The historical defective product image is subjected to Gaussian low-pass filtering to remove noise and obtain a denoised image. The denoised image is then divided into blocks based on adjacent pixels. Geometric feature matching is then performed on the block-processed image, and regions that meet the preset matching conditions are marked as regions of interest, while regions that do not meet the preset matching conditions are marked as regions of non-interest.

[0068] The region of interest and region of non-interest are segmented based on the watershed algorithm to obtain several segmented images. The segmented images are then recombined to obtain the processed historical defective product images.

[0069] A database is constructed, the processed historical defective product images are imported into the database, and the attention scores between the processed historical defective product images in the database are obtained through the Local Sensitive Hash Attention Algorithm.

[0070] Several score thresholds are preset, and several score range gradients are determined based on these score thresholds. Processed historical defective product images with attention scores located in the same score range gradient are extracted and aggregated to obtain a collection of processed historical defective product images corresponding to different score range gradients.

[0071] The processed historical defective product images corresponding to gradients of different score ranges are mapped to different category spaces of the database to obtain a feature database.

[0072] It should be noted that, firstly, by performing noise reduction and image segmentation on historical defective product images, a historical defective product image with the background removed is obtained (i.e., the processed historical defective product image). Then, the attention score of the processed historical defective product image is calculated using the Local Sensitive Hashing Attention Algorithm. Next, the sets of processed historical defective product images corresponding to gradients within different score ranges are mapped to different category spaces in the database to obtain a feature database. This enables the classification of historical defective product images retrieved from the big data network shared database, such as grouping images with wrinkled adhesive tape into one category, and images with excessively long adhesive tape into another. This facilitates subsequent identification, querying, and comparison of image data of different categories, thereby reducing the computational complexity of product defect detection, enabling rapid identification of defective products, and improving processing efficiency.

[0073] Furthermore, the control method for the automatic adhesive applicator for cup and kettle spouts also includes the following steps:

[0074] If there is at least one similarity greater than the preset similarity, then the category space corresponding to the similarity greater than the preset similarity is marked as the matching space, and all historical defective product images in the matching space are paired with the corrected product images to obtain several matching rates.

[0075] A sorting table is constructed, and several matching rates are imported into the sorting table for sorting by size. After sorting, the maximum matching rate is extracted from the sorting table, and the historical defective product image corresponding to the maximum matching rate is obtained. The historical defective product image corresponding to the maximum matching rate is marked as the image to be retrieved.

[0076] Based on the image to be retrieved, a big data network is searched to obtain the historical control schemes corresponding to the adhesive application equipment when the defective situation in the image to be retrieved occurs; and the parameters of each sub-equipment after adjustment in the historical control schemes are obtained.

[0077] Obtain the real-time operating parameters of each sub-device in the adhesive application equipment, compare the real-time operating parameters of each sub-device with the parameters of each sub-device after adjustment in the historical control scheme, and obtain the parameter deviation value;

[0078] The parameter deviation value is compared with a preset deviation value. If the parameter deviation value is greater than the preset deviation value, the real-time operating parameters of the corresponding sub-device are adjusted based on the parameter deviation value.

[0079] It should be noted that the sub-equipment includes a stepper motor in the adhesive application equipment, a first telescopic cylinder in the adhesive application equipment, and a cutting mechanism in the adhesive application equipment. When the adhesive application equipment is working, the operating parameters of each sub-equipment will have a certain impact on the adhesive application quality of the product. For example, if the rotation speed of the stepper motor is uneven or the start-stop speed is too high, it will cause poor adhesive application wrinkles; and if the cutting time of the cutting mechanism is too fast, it will cause poor adhesive cutting.

[0080] If a similarity score exceeds a preset similarity score, it indicates that the product after adhesive application is defective. This defect may be due to abnormal operating parameters of certain sub-equipment. Further analysis of the defective product situation is needed to identify any abnormalities in the sub-equipment, and then the operating parameters of the sub-equipment can be automatically adjusted in a timely manner to prevent a large number of defective products during production. Specifically, firstly, the category space corresponding to the similarity score exceeding the preset similarity score is marked as the matching space, thus determining the defect type of the defective product. For example, if the defect type is determined to be adhesive wrinkling, only the historical defective product image in the category space corresponding to adhesive wrinkling is needed to be paired with the corrected product image, without comparing the corrected product image with images in other category spaces. This step reduces the system's matching workload and improves operating speed. Then, the historical defective product image corresponding to the maximum matching rate is marked as the retrieval image. This step further retrieves the historical defective product image that is closest to the real-time defective product situation. Next, the historical control scheme corresponding to the appearance of the historical defective product image is retrieved from the big data network, and the parameters of each sub-device after adjustment in the historical control scheme are obtained; then, the real-time operating parameters of each sub-device in the adhesive application equipment are obtained; if the parameter deviation value of a certain sub-device is greater than the preset deviation value, it indicates that the operating parameters of the sub-device are abnormal. At this time, the real-time operating parameters of the sub-device are adjusted according to the parameter deviation value, so that the sub-device operates at the normal operating parameters. In summary, when a defective product appears, this method can automatically analyze the sub-devices of the adhesive application equipment, thereby determining whether there are abnormalities in the operating parameters of the sub-devices, and automatically and timely adjusting the operating parameters of the sub-devices with abnormalities. This can avoid the occurrence of continuous large-scale defective products during production, enabling the adhesive application equipment to have automatic monitoring and control functions, realizing equipment intelligence and automation, reducing the rework rate of defective adhesive products, and saving processing costs.

[0081] Furthermore, the control method for the automatic adhesive applicator for cup and kettle spouts also includes the following steps:

[0082] If at least one similarity is greater than the preset similarity, the real-time adhesive application environment parameters of the adhesive application equipment are obtained, and the evaluation target is determined based on the real-time adhesive application environment parameters.

[0083] Preset standard adhesive application environment parameters, and determine evaluation indicators based on the standard adhesive application environment parameters;

[0084] The evaluation scores between the evaluation objectives and evaluation indicators are obtained by using the analytic hierarchy process (AHP), and weight values ​​between the evaluation objectives and evaluation indicators are generated based on the evaluation scores.

[0085] If it is determined whether the weight value is greater than the preset weight value, an adjustment command is generated and sent to the environmental control equipment so that the environmental control equipment can adjust the real-time adhesive application environment.

[0086] It should be noted that environmental parameters for adhesive application include, but are not limited to, humidity, temperature, and dust concentration. Besides the operating parameters of the sub-equipment, environmental parameters also affect the quality of adhesive application. For example, excessive humidity can affect the adhesive tape's stickiness, easily leading to wrinkles and other defects. This method can effectively determine whether current environmental parameters will affect the adhesive application equipment, allowing for timely environmental adjustments to reduce the defect rate and improve overall quality.

[0087] The above description, based on preferred embodiments of the present invention, is quite specific and detailed, but it should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An automatic adhesive applicator for cup and kettle spouts, comprising a frame, characterized in that, The frame is provided with a mounting plate, on which a motor mounting bracket is fixedly mounted. A stepper motor is fixedly mounted on the motor mounting bracket. The output end of the stepper motor is connected to one end of a plum blossom coupling. The other end of the plum blossom coupling is connected to a rotating shaft. A clamp sleeve is fixedly connected to the rotating shaft. Two slide rods are also fixedly mounted on the mounting plate. Linear bearings are fitted on the two slide rods. A fixing plate is fixedly mounted on the linear bearings. A first telescopic cylinder is fixedly mounted on the fixing plate. The output end of the first telescopic cylinder is connected to a first telescopic rod. A fixing clamp is fixedly connected to the first telescopic rod. The mounting plate has four sets of sliding cylinders at preset positions. Each sliding cylinder is slidably connected to a light rod. One end of the light rod is fixedly connected to an adjustment plate. An internal hexagonal head shoulder screw is fixedly installed on the adjustment plate. The internal hexagonal head shoulder screw is connected to the inner ring of a deep groove ball bearing. The outer ring of the deep groove ball bearing is connected to a rotating plate. The deep groove ball bearing allows the rotating plate to rotate around the internal hexagonal head shoulder screw. The end of the hexagonal socket head cap screw is fixedly connected to a first lead screw, which is engaged with the inner ring of a first bearing, and the outer ring of the first bearing is engaged with a first guide wheel; a second lead screw is provided on the rotating plate, which is engaged with the inner ring of a second bearing, and the outer ring of the second bearing is engaged with a second guide wheel; a fixed shaft is also provided on the rotating plate, which is engaged with the inner ring of a third bearing, and the outer ring of the third bearing is engaged with a rubber-coated roller.

2. The automatic adhesive applicator for cup and kettle spouts according to claim 1, characterized in that, A positioning strip is fixedly connected to the bottom of the adjusting plate. An adjusting groove is provided on the positioning strip. A slider is connected to the adjusting groove. A fixing hole is provided on the slider. A fixing bolt is fitted into the fixing hole. A double-ear fixing seat is provided on the slider. A second telescopic cylinder is fixedly installed on the double-ear fixing seat. A second telescopic rod is connected to the output end of the second telescopic cylinder. A Y-shaped connector is fixedly connected to the second telescopic rod. A single-ear fixing seat is provided on the rotating plate. The Y-shaped connector is hinged to the single-ear fixing seat.

3. The automatic adhesive applicator for cup and kettle spouts according to claim 1, characterized in that, The mounting plate is also provided with a support rod, on which a round rod is fixedly connected. A rubber sleeve is fitted on the round rod, and clamping fixing rings are provided on both sides of the rubber sleeve.

4. The automatic adhesive applicator for cup and kettle spouts according to claim 1, characterized in that, The rotating plate is provided with a first optical axis, and two first limiting blocks are arranged on the first optical axis at a preset interval, forming a first limiting area between the two first limiting blocks; the rotating plate is provided with a second optical axis, and two second limiting blocks are arranged on the second optical axis at a preset interval, forming a second limiting area between the two second limiting blocks.

5. The automatic adhesive applicator for cup and kettle spouts according to claim 1, characterized in that, The frame is also equipped with a support mechanism, which includes an L-shaped support column. A first chain plate is fixedly connected to the L-shaped support column. A first dual-axis cylinder is fixedly installed on the first chain plate. A first push-pull rod is connected to the output end of the first dual-axis cylinder. A connecting block is fixedly connected to the end of the first push-pull rod. Two clamps are provided at both ends of the connecting block.

6. The automatic adhesive applicator for cup and kettle spouts according to claim 1, characterized in that, The frame is also equipped with a cutting mechanism, which includes a cross support column. A second chain plate is fixedly connected to the cross support column. A second dual-axis cylinder is fixedly installed on the second chain plate. A second push-pull rod is connected to the output end of the second dual-axis cylinder. A blade holder is fixedly connected to the end of the second push-pull rod. A cutting blade is detachably connected to the blade holder.

7. The automatic adhesive applicator for cup and kettle spouts according to claim 1, characterized in that, The mounting plate is provided with a lead screw bushing, and a front and rear lead screw are screwed onto the lead screw bushing. One end of the front and rear lead screws is connected to a rotating handle, and the other end of the front and rear lead screws is connected to the inner ring of the fourth bearing. The outer ring of the fourth bearing is connected to the adjusting plate.

8. The automatic adhesive applicator for cup and kettle spouts according to claim 1, characterized in that, The frame is also equipped with a camera mechanism.

9. A control method for an automatic cup and kettle spout adhesive applicator, applied to the automatic cup and kettle spout adhesive applicator as described in any one of claims 1-8, characterized in that, Includes the following steps: The system acquires historical defective product images corresponding to products when defects occur through big data networks, processes these images to obtain processed historical defective product images, classifies these processed images to obtain classified historical defective product images, constructs a database, and maps the classified historical defective product images to different category spaces in the database to obtain a feature database. After the adhesive is applied to each product by the adhesive applicator, the product image is captured by the camera and the product image is processed to obtain the processed product image. The processed product image is then corrected to obtain the corrected product image. One historical defective product image is extracted from each of the different category spaces in the feature database, and the extracted historical defective product images are aggregated to obtain a comparison image set. The similarity between the corrected product image and each historical defective product image in the comparison image set is obtained by grey relational analysis, and several similarity scores are obtained. The similarity scores are compared with a preset similarity score. If none of the similarity scores are greater than the preset similarity score, the product after adhesive application is determined to be a qualified product. If at least one similarity score is greater than the preset similarity score, the product after adhesive application is determined to be a defective product.

10. The control method for an automatic adhesive applicator for cup and kettle spouts according to claim 9, characterized in that, The processed product image is then corrected to obtain a corrected product image, specifically as follows: Feature extraction is performed on the processed product image to obtain several feature matching points. The feature matching points are then linearly transformed to obtain the feature vector corresponding to the image. An analytical model is constructed based on a convolutional neural network, and the feature vectors are imported into the analytical model for analysis to obtain a set of vector components. The maximum and minimum vector components in the vector component set are selected as the basis for construction, and a vector coordinate system is constructed based on the basis. Import all vector components in the vector component set into the vector coordinate system, obtain the coordinate point information of each vector component in the vector coordinate system, and generate a coordinate point information set based on the coordinate point information; Obtain the camera coordinate system corresponding to the camera mechanism, import the set of coordinate point information into the camera coordinate system, and recombine the set of coordinate point information in the camera coordinate system to generate the corrected product image.

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