Strip cutting and material screening method and system of rubber strip cutting machine

Abstract

The invention relates to a slitting and screening method and system of a rubber slitting machine, and relates to the technical field of rubber slitting, and the method comprises the following steps: obtaining a slitting image of a to-be-screened rubber strip cut by the rubber slitting machine; frame selection is carried out in the slitting image according to preset adhesive tape features to obtain an adhesive tape feature image; based on the rubber strip feature image, key feature parameters and rubber strip positions of rubber strips are obtained through extraction; determining a qualified position of the adhesive tape according to the extracted key characteristic parameters and a preset adhesive tape qualification judgment standard; according to the qualified position, the adhesive tape meeting the requirement is excluded from the adhesive tape position, and a screening position is obtained; and the rubber strip cutting machine is controlled to separate the remaining unqualified rubber strips from the screening position, the screened qualified rubber strips are collected, and strip cutting and material screening are completed. The method has the effect of improving the production efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of rubber strip cutting technology, and in particular to a method and system for cutting and screening materials for a rubber strip cutting machine. Background Technology

[0002] Rubber strip cutting is a crucial preliminary step in rubber product manufacturing. After cutting, qualified strips need to be separated through a screening process to ensure product quality in subsequent vulcanization, molding, and other processes.

[0003] In actual production, manual screening is widely used in the screening process. After the rubber strips are cut, they fall onto the conveyor belt through the discharge port. Workers use visual observation and touch to remove unqualified rubber strips that are not the right size, have burrs, or are broken. Qualified rubber strips are then classified into batches and placed into special material boxes to complete the entire screening process.

[0004] The screening process relies entirely on manual operation, resulting in low production efficiency. Furthermore, the screening accuracy is greatly affected by the worker's experience and condition, which can easily lead to the omission of qualified strips or the mixing of waste materials. At the same time, it is difficult to standardize the manual judgment, resulting in poor consistency in strip size and insufficient accuracy. Summary of the Invention

[0005] To improve production efficiency and accuracy, this invention provides a method and system for cutting and screening materials for a rubber strip cutting machine.

[0006] In a first aspect, the present invention provides a method for cutting and screening rubber strips using a rubber strip cutting machine, employing the following technical solution: A method for cutting and screening rubber strips using a rubber strip cutting machine includes: Obtain images of the rubber strips to be screened after being cut by the rubber strip cutting machine; The adhesive strip feature image is obtained by selecting the area with preset adhesive strip features in the cut strip image; Key feature parameters and location of the adhesive strip are extracted from the feature image of the adhesive strip. Based on the extracted key feature parameters and the preset qualified judgment criteria for the adhesive strip, the qualified position of the adhesive strip is determined; Based on the qualified position, the qualified rubber strips are excluded from the rubber strip positions to obtain the screening position; The rubber strip cutter is controlled to separate the remaining unqualified rubber strips at the screening position, and the qualified rubber strips are collected to complete the cutting and screening process.

[0007] By adopting the above technical solution, after acquiring the strip images, the feature images of the rubber strips are selected sequentially, key feature parameters are extracted and compared with the qualification standards to determine the qualified rubber strips and the screening positions. This transforms the strip screening from manual sampling to online full inspection, improving production efficiency and accuracy.

[0008] Optionally, the key feature parameters of the adhesive strip extracted from the feature image include: The set of contour pixel coordinates obtained by extracting the contour of the adhesive strip from the feature image of the adhesive strip; The size parameters of the adhesive strip are calculated based on the set of outline pixel coordinates. Gray-scale distribution recognition is performed on the feature image of the adhesive strip to determine its shape parameters and surface gray-scale values; The grayscale variance is calculated based on the surface grayscale value of the adhesive strip. The flatness parameters of the adhesive strip surface are determined based on the grayscale variance and shape parameters; Dimensional parameters, shape parameters, and flatness parameters are used as key feature parameters.

[0009] By adopting the above technical solution, the size is calculated from the set of contour pixel coordinates, and the flatness parameters of grayscale distribution are identified. Multi-dimensional features are incorporated into the judgment criteria, reducing the risk of missed detection and misjudgment, and laying a data foundation for subsequent accurate separation.

[0010] Optionally, determining the qualified location of the adhesive strip includes: The size, shape and flatness parameters in the key feature parameters are compared with the preset qualified judgment standard of the rubber strip to obtain the multi-parameter comparison group and deviation data. The parameter set of the three parameters is determined based on the multi-parameter comparison group; Based on the preset comprehensive judgment rules and the position of the adhesive strip, the parameter set of the three parameters is integrated and screened to obtain the preliminary qualified position and the exclusion position of the adhesive strip; Based on the exclusion locations and deviation data, the deviations of the key characteristic parameters from the pass / fail criteria are reviewed to obtain the review locations; The qualified position of the adhesive strip is determined based on the preliminary qualified position and the verification position.

[0011] By adopting the above technical solution, key feature parameters are grouped, compared, integrated, and screened. Then, deviations in the exclusion position are checked and double-verified to ensure reliable output of qualified positions and prevent unqualified products from flowing into downstream processes.

[0012] Optionally, controlling the rubber strip cutter to separate remaining defective rubber strips at screening positions includes: Collect the weight and material of the adhesive strip; Determine the adhesion parameters based on the weight and size parameters of the adhesive strip; The contact pressure value is determined based on the material and viscosity parameters of the adhesive strip; The adhesion path is planned based on the filtering location and viscosity parameters; The contact dwell time is determined based on the adhesion path and contact pressure value; Control the preset adhesive rod to move to the screening position, and perform separation and adhesion operations based on contact dwell time, adhesive parameters and contact pressure value, and then move along the adhesion path to the preset storage area.

[0013] By adopting the above technical solution, combining the adhesive strip weight and material to calculate the adhesion parameters, planning the adhesion path and setting the contact dwell time, the adhesive rod is driven to perform separation and adhesion according to the path, thus achieving interference-free sorting.

[0014] Optionally, the contact pressure value can be determined based on the material and adhesion parameters of the adhesive strip, including: The contact pressure range is determined by matching the material of the rubber strip. The initial pressure value is determined based on the material of the rubber strip and the preset contact coefficient; The viscosity correction coefficient is determined based on the viscosity parameters and the preset viscosity threshold. The initial contact pressure value is obtained by multiplying the initial pressure value and the viscosity correction factor. If the initial contact pressure value is within the contact pressure range, it is directly used as the contact pressure value. If the initial contact pressure value is not within the contact pressure range, the contact pressure value is adjusted based on the initial contact pressure value and the contact pressure range.

[0015] By adopting the above technical solution, the contact pressure range is locked according to the material, and the pressure value is dynamically adjusted by introducing a viscosity correction coefficient, so that the adhesive rod maintains the best adhesion force for various adhesive strips, taking into account both the separation effect and the integrity of the adhesive strip.

[0016] Optionally, the adhesion path can be planned based on the filtering location and viscosity parameters, including: The distribution range of qualified adhesive strips and the order of unqualified adhesive strips are determined based on the location of the adhesive strips and the screening location. The working space to be moved is determined based on the image of the cut strips; Determine the constraints of the path based on the distribution range and the workspace; The target order is determined based on the positional order and viscosity parameter markings; Starting from the preset initial standby position of the sticky rod, the path nodes are determined according to the filtering position and the order of the targets; Based on path nodes and constraints, a path is determined as a sticky path using a preset path planning algorithm.

[0017] By adopting the above technical solution, with the distribution range and working space as constraints, the adhesive path nodes are generated in the order of position and the path planning algorithm is run to ensure that the adhesive rod can quickly shuttle through the complex material surface, thereby increasing the speed and frequency.

[0018] Optionally, determining the contact dwell time based on the adhesion path and contact pressure value includes: Extract the length, speed, and smoothness parameters of the adhesive path; Based on the length and speed parameters of the adhesive path, calculate the inertia value of the rod as it reaches the contact position of the defective adhesive strip; By combining the smoothness parameter of the adhesive path and the value of motion inertia, the impact influence coefficient when the rod contacts the adhesive strip is determined; The effective contact pressure value is determined by using a pressure correction algorithm based on the contact pressure value and the impact influence coefficient. The adhesiveness of the rubber head is determined based on the effective contact pressure value and the preset pressure coefficient; The dwell time coefficient is determined by combining the smoothness parameter of the adhesion path with the degree of viscosity; The contact dwell time is calculated based on the dwell time coefficient and the effective contact pressure value.

[0019] By adopting the above technical solution, the impact influence coefficient is calculated by comprehensively considering the path length, speed and smoothness, and then the effective contact pressure is corrected and the dwell time is derived, so that each adhesive application can be fully adhered and successfully peeled off, avoiding the adhesive strip from slipping or leaving residue.

[0020] Optionally, the adhesion parameters can be determined based on the weight and size parameters of the adhesive strip, including: The width of the adhesive strip is extracted from the dimensional parameters; The contact area to be adhered to is determined based on the width of the adhesive strip and the preset diameter of the adhesive head; The area ratio is obtained by calculating the contact area and the preset coverage area; The range of adhesion angles is determined based on the degree of adhesion and the area ratio. The adhesive angle is determined based on the range of adhesive angles and the weight of the adhesive strip. The adhesion position is determined based on the weight of the adhesive strip and the set of outline pixel coordinates. Adhesion angle and adhesion position are used as adhesion parameters.

[0021] By adopting the above technical solution, the contact area ratio is calculated using the width of the adhesive strip and the diameter of the adhesive head, and the bonding angle and position are determined by combining the weight. The bonding parameters are tightly coupled with the geometric characteristics of the adhesive strip, thereby improving the bonding success rate and stability.

[0022] Optionally, determining the adhesion position based on the adhesive strip weight and the set of outline pixel coordinates includes: The geometric boundary of the adhesive strip is determined by extracting the set of pixel coordinates of the strip's outline. The boundary range of the adhesive strip is determined based on the dimensional parameters and geometric boundaries; Calculate the geometric center coordinates of the adhesive strip based on its boundary range and weight; Calculate the initial adhesion position based on the geometric center coordinates and adhesion angle; The effective coverage area of ​​the adhesive application location is determined based on the geometric boundaries and the degree of adhesion. Verify that the effective coverage area is completely within the boundary of the adhesive strip; If it is within the boundary of the adhesive strip, the final adhesive position is determined based on the contact pressure value and the initial adhesive position; If it is not within the boundary of the adhesive strip, determine the position parameters based on the boundary range and the effective coverage area; The initial adhesive position is adjusted based on the position parameters and contact pressure value to obtain the adhesive position.

[0023] By adopting the above technical solution, the effective coverage area is verified by geometric boundary, and the initial adhesion position is dynamically adjusted to ensure that the adhesion area is completely inside the adhesive strip, preventing the adhesive rod from being stuck or making edge contact, thereby further improving the separation accuracy and consistency.

[0024] Secondly, this application provides a strip-cutting and screening system for a rubber strip cutter, which adopts the following technical solution: A strip-cutting and screening system for a rubber strip cutter includes: The acquisition module is used to acquire the sliced ​​image; The memory is used to store the program that implements the cutting and screening method of any rubber strip cutting machine; The processor loads and executes programs from memory.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. After acquiring the strip images, select the feature images of the rubber strips in sequence, extract key feature parameters and compare them with the qualification standards to determine the qualified rubber strips and the screening position, so that the strip screening is changed from manual sampling to online full inspection, improving production efficiency and accuracy; 2. Calculate the adhesive parameters based on the weight and material of the adhesive strip, plan the adhesion path and set the contact dwell time, and drive the adhesive rod to perform separation and adhesion according to the path to achieve interference-free sorting; 3. Verify the effective coverage area using geometric boundaries, dynamically adjust the initial adhesion position to ensure the adhesion area is completely inside the adhesive strip, prevent the adhesive rod from being stuck or making edge contact, and further improve separation accuracy and consistency. Attached Figure Description

[0026] Figure 1 This is a flowchart of a method for cutting and screening materials using a rubber strip cutting machine according to an embodiment of the present invention; Figure 2 This is a flowchart of the adhesive strip separation method according to an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] This application discloses a method for cutting and screening materials using a rubber strip cutting machine.

[0029] Reference Figure 1 A method for cutting and screening rubber strips using a rubber strip cutting machine includes the following steps: Step S100: Obtain the image of the rubber strips to be screened after being cut by the rubber strip cutting machine.

[0030] Cutting images refer to image data of rubber strips after being cut by a rubber cutting machine.

[0031] The rubber strips to be screened are captured by a camera pre-set inside the rubber cutting machine. The camera is pre-set by technicians according to the actual situation, and will not be described in detail here.

[0032] Step S101: Select the adhesive strip feature image by using the preset adhesive strip features in the cut strip image.

[0033] The characteristics of the rubber strip refer to its appearance features, such as shape and color. These are preset by technicians according to the actual situation and will not be elaborated here.

[0034] The adhesive strip feature image refers to the image of the adhesive strip portion identified and extracted from the cut strip image.

[0035] By annotating a large number of images with adhesive strip features, and then inputting these annotated images into the YOLO large model, the adhesive strip features are extracted by repeatedly stacking images using a PyTorch network architecture. The error between the results and the data is calculated, and when the error is less than 1%, the model is put into use. The YOLO large model is an existing large model, which will not be elaborated here.

[0036] The cut strip image is input into the YOLO large model. When the adhesive strip feature is recognized, the adhesive strip feature is marked and selected from the cut strip image. The selected image is the adhesive strip feature image, which is common knowledge known to those skilled in the art and will not be elaborated here.

[0037] Step S102: Extract the key feature parameters and position of the adhesive strip based on the feature image of the adhesive strip.

[0038] Key characteristic parameters refer to important characteristic data of the adhesive strip, such as size, shape and flatness.

[0039] The adhesive strip position refers to the specific location of the adhesive strip in the image.

[0040] The method for extracting key feature parameters is described in steps S200 to S205, and will not be repeated here. Selecting the location of the adhesive strip feature from the cut image is the adhesive strip location, which is common knowledge well known to those skilled in the art, and will not be repeated here.

[0041] Step S103: Determine the qualified position of the adhesive strip based on the extracted key feature parameters and the preset qualified judgment criteria of the adhesive strip.

[0042] The criteria for judging the quality of rubber strips refer to the standard threshold parameters for judging whether rubber strips are qualified based on three dimensions: size, shape and flatness. These are preset by technicians according to the actual situation and will not be elaborated here.

[0043] The qualified position refers to the position coordinates of the rubber strip that meet the requirements.

[0044] The specific method for determining the qualified position is described in steps S300 to S304, and will not be repeated here.

[0045] Step S104: Eliminate qualified rubber strips from the rubber strip positions according to the qualified positions to obtain the screening positions.

[0046] The screening location refers to the coordinates of the location of the defective adhesive strip that needs to be separated.

[0047] After excluding the qualified positions of the qualified rubber strips from the rubber strip positions, the remaining unqualified rubber strip positions are the screening positions.

[0048] Step S105: Control the rubber strip cutter to separate the remaining unqualified rubber strips at the screening position, collect the screened qualified rubber strips, and complete the strip cutting and screening.

[0049] The specific method for separating the adhesive strips is described in steps S400 to S405, and will not be repeated here.

[0050] The rubber strip cutting machine is a core pre-processing equipment in the production of rubber products, mainly composed of a frame, a conveying drive system, a control system, and an adhesive device, which provide a stable overall structure. The adhesive device consists of an adhesive rod body with a preset adhesive head (matching the adhesive strip's adhesive requirements), a drive mechanism that drives the rod to move along the planned adhesive path, a pressure regulating component that adjusts the contact pressure value, a position detection and positioning component that positions the screening position and the rubber strip position, a support and guide structure that constrains the rod's movement trajectory, and a preset collection area for collecting unqualified rubber strips. All parts work together to achieve precise adhesive strip collection and separation of unqualified rubber strips.

[0051] The key feature parameters of the adhesive strip are extracted from its feature image, including the following steps: Step S200: Extract the contour pixel coordinate set of the adhesive strip from the feature image of the adhesive strip.

[0052] The outline pixel coordinate set refers to the set of pixel coordinate data of the adhesive strip outline.

[0053] First, environmental interference is eliminated through image preprocessing techniques. Then, edge detection algorithms are used to capture pixel abrupt changes in the boundaries of the adhesive strip. Finally, contour tracking algorithms are used to traverse all continuous pixels on the boundaries of the adhesive strip and record the horizontal and vertical coordinates (x, y) of each boundary pixel in the image coordinate system in sequence to form a complete set of contour pixel coordinates. This is common knowledge known to those skilled in the art and will not be elaborated here.

[0054] Step S201: Calculate the size parameters of the adhesive strip based on the set of contour pixel coordinates.

[0055] Dimensional parameters refer to the dimensional data such as the length, width, and height of the adhesive strip.

[0056] By using geometric analysis and physical calibration of image coordinates, discrete pixels are transformed into actual physical dimensions (such as length, width, thickness, etc.), which are the size parameters. The entire process requires the combination of coordinate preprocessing, feature extraction, and unit conversion to achieve accurate calculations. This is common knowledge familiar to those skilled in the art and will not be elaborated here.

[0057] Step S202: Perform grayscale distribution recognition on the feature image of the adhesive strip to determine the shape parameters and surface grayscale values.

[0058] External parameters refer to the characteristic shape of the rubber strip.

[0059] The surface grayscale value refers to the value calculated based on the grayscale of the adhesive strip surface.

[0060] First, the color image is converted into a grayscale image. The difference in brightness of the grayscale values ​​is used to quantify the features of the adhesive strip and the background, as well as different areas on the surface of the adhesive strip. Then, the shape parameters and surface conditions are accurately extracted through algorithm analysis. This is common knowledge known to those skilled in the art and will not be elaborated here.

[0061] Step S203: Calculate the grayscale variance based on the surface grayscale value of the adhesive strip.

[0062] Gray-scale variance refers to the variance of the gray-scale values ​​on the surface of the adhesive strip.

[0063] First, calculate the average gray value of all pixels in the entire adhesive strip image as a benchmark for measuring the overall brightness level of the surface. Then, calculate the difference between the gray value of each pixel and the average value, and square the difference. Sum the squared differences of all pixels and divide by the total number of pixels. The final result is the gray variance of the adhesive strip surface.

[0064] Step S204: Determine the flatness parameters of the adhesive strip surface based on the grayscale variance and shape parameters.

[0065] Flatness parameters refer to the data parameters of the flatness of the rubber strip surface.

[0066] The dispersion of pixel grayscale values ​​on the adhesive strip surface is determined by grayscale variance. If the adhesive strip surface is flat, without defects such as bumps, depressions, or scratches, the pixel grayscale distribution is uniform, and the grayscale variance is at a low level. If there are surface irregularities, the grayscale values ​​of the defective areas will differ significantly from those of the normal areas, resulting in a significant increase in grayscale variance. This captures surface irregularities at the microscopic level. Simultaneously, the core shape parameters of the adhesive strip are extracted. The edges of a flat adhesive strip should be close to ideal straight lines, while uneven adhesive strips will exhibit edge curvature, abrupt width changes, and other problems, causing the shape parameters to deviate from the standard threshold. Flatness parameters are obtained by inputting the grayscale variance and shape parameters into a pre-set flatness parameter database. This database is pre-set by technicians based on actual conditions and contains the relationship between grayscale variance, shape parameters, and flatness parameters. The actual parameters are pre-set by technicians based on actual conditions and will not be elaborated upon here.

[0067] Step S205: Use the dimensional parameters, shape parameters, and flatness parameters as key feature parameters.

[0068] The dimensions, shape, and flatness parameters are used as key characteristic parameters to determine whether the rubber strip is qualified.

[0069] Determining the proper position of the adhesive strip involves the following steps: Step S300: Compare the size parameter, shape parameter and flatness parameter in the key feature parameters with the preset qualified judgment standard of the rubber strip to obtain the multi-parameter comparison group and deviation data.

[0070] Multi-parameter comparison group refers to the interval group with different differences after comparing the three parameters of size, shape and flatness.

[0071] Deviation data refers to the deviation value between the parameter and the standard.

[0072] By comparing the size, shape, and flatness parameters in the key characteristic parameters with their corresponding standard parameters in the qualified judgment standard for the rubber strip and calculating the difference, the deviation data between each parameter and the standard value is obtained. Parameters with similar differences are grouped together to obtain a multi-parameter comparison group. This is common knowledge to those skilled in the art and will not be elaborated here.

[0073] For example: classification groups are formed according to preset intervals (such as size difference 0-0.1mm, 0.1-0.3mm, >0.3mm, shape / flatness difference is acceptable, slightly exceeds the standard, seriously exceeds the standard, etc.).

[0074] Step S301: Determine the parameter set of the three parameters based on the multi-parameter comparison group.

[0075] The parameter set refers to the set of data for three types of parameters: size, shape, and flatness.

[0076] The parameters of the comparison group with the smallest difference from the standard value are selected as the parameter set based on the multi-parameter comparison group.

[0077] Step S302: Based on the preset comprehensive judgment rules and the position of the adhesive strip, the parameter set of the three parameters is integrated and screened to obtain the preliminary qualified position and the exclusion position of the adhesive strip.

[0078] The comprehensive judgment rule refers to the threshold rule for judging whether the rubber strip is qualified based on three parameters: size, shape and flatness. It is preset by the technicians according to the actual situation and will not be elaborated here.

[0079] Preliminary qualified position refers to the position of the rubber strip that is initially judged to be qualified.

[0080] Exclusion location refers to the location of the non-conforming rubber strip that was excluded.

[0081] First, clarify the comprehensive judgment rules. Combine the coordinate information of the rubber strip position, and then integrate and analyze the complete set of three parameters corresponding to the position: rubber strip size, shape, and flatness. Verify them one by one according to the comprehensive judgment rules: if all three parameters meet the qualified standards or the deviation is within the acceptable range, the position corresponding to the rubber strip is marked as a preliminary qualified position; if any parameter seriously exceeds the standard, the deviation of multiple parameters exceeds the comprehensive threshold, or the key parameter does not meet the qualified requirements, the position corresponding to the rubber strip is judged as an exclusion position. This provides a clear basis for the subsequent screening device to accurately remove unqualified rubber strips and lock the production area of ​​problematic rubber strips.

[0082] Step S303: Based on the exclusion location and deviation data, verify the deviation of its key characteristic parameters from the qualification judgment standard to obtain the verification location.

[0083] The verification location refers to the location of the adhesive strip that has been verified.

[0084] Based on the exclusion locations (such as unqualified areas initially identified during production) and the corresponding deviation data (such as specific values ​​of deviation from the standard in terms of size, accuracy, etc.), we first focus on the key characteristic parameters of the rubber strips in these areas (such as width, thickness, flatness, etc.), and then compare the parameters with the preset acceptance criteria one by one to verify whether the deviation actually exists and whether the degree of deviation exceeds the allowable range. Finally, we accurately locate the verification locations that need further verification or correction to ensure the accuracy of the screening results.

[0085] Step S304: Determine the qualified position of the adhesive strip based on the preliminary qualified position and the verification position.

[0086] The initial qualified position and the verification position are considered together as the qualified position of the adhesive strip.

[0087] Reference Figure 2 Controlling the rubber strip cutter to separate the remaining defective rubber strips at the screening position includes the following steps: Step S400: Collect the weight and material of the adhesive strip.

[0088] The weight of the rubber strip refers to the weight data of the rubber strip.

[0089] The material of the adhesive strip refers to the type of material used in the adhesive strip.

[0090] The weight of the rubber strip can be collected through an electronic weighing module connected after the strip is cut; the material of the rubber strip is collected by a combination of sampling inspection and online rapid identification. After sampling, the chemical composition is quickly analyzed by an infrared spectrometer to complete the identification. In the online process, parameters such as the density and conductivity of the rubber strip can be captured in real time by a material sensor to help verify the consistency of the material and ensure that the collected data is accurately adapted to the subsequent screening and grading requirements. This is common knowledge known to those skilled in the art and will not be elaborated here.

[0091] Step S401: Determine the adhesion parameters based on the weight and size parameters of the adhesive strip.

[0092] The tack parameter refers to the data on the tackiness of the adhesive strip.

[0093] The method for determining viscosity parameters is described in steps S800 to S806, and will not be repeated here.

[0094] Step S402: Determine the contact pressure value based on the material and adhesion parameters of the adhesive strip.

[0095] Contact pressure value refers to the pressure value when the viscous rod comes into contact with the adhesive strip.

[0096] The method for determining the contact pressure value is described in steps S500 to S505, and will not be repeated here.

[0097] Step S403: Plan the adhesion path based on the filtering position and viscosity parameters.

[0098] The adhesive path refers to the path along which the adhesive rod moves.

[0099] The method for obtaining the paste path is described in steps S600 to S605, and will not be repeated here.

[0100] Step S404: Determine the contact dwell time based on the adhesion path and contact pressure value.

[0101] Contact dwell time refers to the time that the adhesive rod is in contact with the adhesive strip.

[0102] The method for determining the contact dwell time is described in steps S700 to S706, and will not be repeated here.

[0103] Step S405: Control the preset adhesive rod to move to the screening position, and perform separation and adhesion operation based on the contact dwell time, adhesive parameters and contact pressure value, and then move it along the adhesion path to the preset storage area.

[0104] Adhesive rods refer to devices used to pick up adhesive strips.

[0105] The storage area refers to the area where substandard adhesive strips are collected. It is set up in advance by technicians according to the actual situation and will not be described in detail here.

[0106] The adhesive rod is controlled to reach the screening position to ensure accurate contact with the material to be separated. According to the contact residence time, viscosity parameters and contact pressure value, the adhesive rod is driven to pick up the unqualified adhesive strip, thereby achieving separation and picking. The adhesive rod moves along the preset picking path and finally arrives at the preset collection area to complete the transfer and collection of the material.

[0107] Determining the contact pressure value based on the material and adhesion parameters of the adhesive strip includes the following steps: Step S500: Obtain the contact pressure range based on the material of the rubber strip.

[0108] The contact pressure range refers to the reasonable pressure reference range for contact pressure values.

[0109] Different rubber strip materials have different contact pressure ranges. The contact pressure range is obtained by inputting the rubber strip material into the preset contact pressure range database. The contact pressure range database is a database that is preset by technicians according to the actual situation. The contact pressure range database contains the relationship between the rubber strip material and the contact pressure range. The actual parameters are preset by technicians according to the actual situation, which will not be elaborated here.

[0110] Step S501: Determine the initial pressure value based on the material of the rubber strip and the preset contact coefficient.

[0111] The contact coefficient refers to a coefficient related to the material of the rubber strip, which is preset by technicians according to the actual situation and will not be elaborated here.

[0112] The initial pressure value refers to the initial contact pressure value.

[0113] The initial pressure value is obtained by multiplying the material of the rubber strip and the contact coefficient.

[0114] Step S502: Determine the viscosity correction coefficient based on the viscosity parameters and the preset viscosity threshold.

[0115] The viscosity threshold refers to the critical value of the viscosity parameter, which is preset by technicians according to the actual situation, and will not be elaborated here.

[0116] The viscosity correction factor is a factor used to correct for contact pressure values.

[0117] The adhesion angle and adhesion position in the adhesion parameters are weighted and calculated with the adhesion threshold to analyze the deviation between the actual adhesion-related conditions and the standard threshold. Then, the corresponding adhesion correction coefficient is obtained according to the deviation. This coefficient is used to adjust the initial contact pressure value to ensure that the adhesion force of the adhesive rod on the unqualified adhesive strip is adapted to the characteristics of the adhesive strip and the adhesion requirements. The specific weights are preset by the technicians according to the actual situation and will not be elaborated here.

[0118] Step S503: Calculate the initial contact pressure value based on the product of the initial pressure value and the viscosity correction coefficient.

[0119] The initial contact pressure value refers to the initially calculated contact pressure value.

[0120] The initial contact pressure value is obtained by multiplying the initial pressure value and the viscosity correction factor.

[0121] Step S504: If the initial contact pressure value is within the contact pressure range, it is directly used as the contact pressure value.

[0122] If the initial contact pressure value is within the contact pressure range, it indicates that it conforms to the material of the rubber strip, and can therefore be directly used as the contact pressure value.

[0123] Step S505: If the initial contact pressure value is not within the contact pressure range, adjust the contact pressure value according to the initial contact pressure value and the contact pressure range.

[0124] If the initial contact pressure value is not within the contact pressure range, it indicates that the material of the rubber strip is not suitable. Divide the initial contact pressure value by the threshold of the range that is close to the contact pressure range, and then multiply it by the initial contact pressure value to obtain the contact pressure value.

[0125] The adhesion path is planned based on the filtering location and viscosity parameters, including: Step S600: Determine the distribution range of qualified adhesive strips and the position sequence of unqualified adhesive strips based on the position of the adhesive strips and the screening position.

[0126] The rubber strip position refers to the pixel coordinates of the current rubber strip in the image.

[0127] Distribution range refers to the spatial distribution area of ​​qualified adhesive strips in the image.

[0128] The positional order refers to the sequence of defective rubber strips along the production line.

[0129] First, the concentrated coverage area of ​​qualified adhesive strips in the work space is determined by directional clustering and boundary division, forming the distribution range of qualified adhesive strips. Then, for unqualified adhesive strips not included in the screening location, the order of arrangement of each unqualified adhesive strip is sorted out according to its distance from the qualified distribution range, the order of arrangement in the work space, or the preset adhesion priority. This is the positional order of the unqualified adhesive strips.

[0130] Step S601: Determine the moving workspace based on the strip image recognition.

[0131] The working space refers to the three-dimensional spatial range within which the adhesive rod can be safely moved.

[0132] By identifying and extracting the distribution range of qualified and unqualified rubber strips in the cut strip image, as well as the specific position coordinates of each rubber strip, and combining physical constraint information such as the boundary of the rubber strip cutting machine's workbench and the interference area of ​​the equipment's own structure, the area where qualified rubber strips are located and the range of obstacles that may affect movement are eliminated. Finally, the effective space range in which the adhesive rod can move safely and without collision and can fully cover all screening positions during the process of picking up unqualified rubber strips is defined as the working space. This is common knowledge in the art and will not be elaborated here.

[0133] Step S602: Determine the path constraints based on the distribution range and workspace.

[0134] Constraints refer to limitations such as obstacle avoidance, speed, and acceleration, which are preset by technicians according to the actual situation and will not be elaborated here.

[0135] Based on the distribution range of qualified adhesive strips and the moving working space of the sticking rod inside the strip cutter, it is determined that the path must avoid the area where the qualified adhesive strips are located to avoid accidental contact. At the same time, it must not exceed the physical boundary of the working space, and must be adapted to the mechanical movement limits such as the moving stroke and turning angle of the adhesive rod to ensure that the planned sticking path does not affect the qualified adhesive strips and can be executed smoothly within the allowable movement range of the equipment.

[0136] Step S603: Determine the target order based on the positional order and viscosity parameter markings.

[0137] The target sequence refers to the order in which unqualified adhesive strips are applied.

[0138] First, by combining the distribution range and position order of the defective adhesive strips identified from the cut strip images, the initial arrangement logic of each defective adhesive strip is clarified. Then, based on the information such as the difficulty of adhesion and the adaptability of contact area marked by the adhesion parameters (adhesion angle, adhesion position), the initial position order is optimized and adjusted. Finally, the order in which the adhesive rods adhere to the defective adhesive strips is determined to ensure that the adhesion process is efficient and does not affect the qualified adhesive strips.

[0139] Step S604: Starting from the preset initial standby position of the adhesive rod, determine the path nodes according to the selection position and target order.

[0140] The initial standby position refers to the coordinates at which the adhesive rod begins to stop. This is preset by technicians based on the actual situation and will not be elaborated here.

[0141] Path nodes refer to the key intermediate points on the path.

[0142] Starting from the pre-initial standby position, and combining the screening positions corresponding to the unqualified adhesive strips that need to be separated, and then according to the target order (the processing order determined based on the distribution range and viscosity parameters of the adhesive strips), the key points that the rod needs to pass through in sequence during the movement are reasonably planned. These key points are the path nodes, which provide the basis for the generation of the complete adhesive path in the future.

[0143] Step S605: Based on the path nodes and constraints, the path is determined as the sticky path using a preset path planning algorithm.

[0144] Path planning algorithms refer to algorithms that generate collision-free shortest paths. These are pre-set by technicians based on actual conditions and will not be elaborated upon here.

[0145] The adhesive path refers to the final trajectory of the adhesive rod.

[0146] Starting from the initial standby position of the adhesive rod, the path nodes are determined by combining the screening positions of unqualified adhesive strips and the target sequence. Then, the distribution range of qualified adhesive strips and the working space of the strip cutter are used as constraints. The path planning algorithm optimizes the nodes to avoid qualified adhesive strip areas and fit the working space limitations. Finally, an efficient adhesive path that does not affect the adhesion of qualified adhesive strips is generated, providing precise guidance for the movement and adhesion operation of the adhesive rod.

[0147] Determining the contact dwell time based on the adhesion path and contact pressure value includes the following steps: Step S700: Extract the length parameter, movement speed parameter, and smoothness parameter of the adhesive path.

[0148] The length parameter refers to the total length of the paste path.

[0149] The moving speed parameter refers to the maximum permissible speed of the viscous rod.

[0150] The smoothness parameter refers to the quantified value of the continuity of path curvature.

[0151] The length parameter of the adhesive path refers to the actual extension distance of the path from the initial standby position of the adhesive rod to each screening position, and then to the preset storage area. The moving speed parameter is the set rate standard when driving the adhesive rod to move along the path. The smoothness parameter reflects the smoothness of the transitions and connections in the path. All three are extracted from the planned adhesive path to provide basic data support for subsequent calculations of motion inertia value, impact influence coefficient and contact dwell time.

[0152] Step S701: Calculate the motion inertia value of the rod when it reaches the contact position of the defective adhesive strip based on the length parameter and moving speed parameter of the adhesive path.

[0153] The value of kinetic inertia refers to the equivalent value of the kinetic energy of the viscous rod at the instant of contact.

[0154] Based on the length and speed parameters of the adhesive path, the path length determines the travel distance of the rod from its initial standby position to the contact position with the defective adhesive strip, thus affecting its motion state during acceleration, constant speed, or deceleration. The speed parameter specifies the instantaneous velocity of the rod at the moment of contact. By calculating the correlation between the travel distance and the instantaneous velocity, the inertia value of the rod when it contacts the adhesive strip can be derived. This value directly reflects the degree of kinetic energy impact at the moment of contact and is preset by technicians according to the actual situation, so it will not be elaborated here.

[0155] Step S702: Combine the smoothness parameter of the adhesive path with the motion inertia value to determine the impact influence coefficient when the rod contacts the adhesive strip.

[0156] The impact influence coefficient refers to the dimensionless coefficient of the impact force at the moment of contact.

[0157] First, the motion inertia value of the rod reaching the contact position of the defective adhesive strip is calculated based on the length and speed parameters of the adhesive path. Then, the smoothness of the path is judged by the smoothness parameter of the adhesive path (the higher the smoothness, the smoother the path). Subsequently, the combined influence of the motion inertia value and the path state reflected by the smoothness parameter on the impact force at the moment of contact between the rod and the adhesive strip is analyzed. The larger the motion inertia value and the lower the path smoothness, the more obvious the contact impact. Based on this, the two parameters are integrated through a preset correlation algorithm to finally determine the impact influence coefficient when the rod contacts the adhesive strip. The correlation algorithm is preset by the technicians according to the actual situation and will not be described in detail here.

[0158] Step S703: Determine the effective contact pressure value based on the contact pressure value and the impact influence coefficient using a pressure correction algorithm.

[0159] The pressure correction algorithm refers to the pressure calculation algorithm after compensating for inertial impact. It is preset by technicians according to the actual situation and will not be elaborated here.

[0160] Effective contact pressure refers to the actual pressure used for bonding.

[0161] Based on the contact pressure value and combined with the impact influence coefficient, the initial contact pressure value is specifically corrected using a pressure correction algorithm. This is to offset the pressure deviation caused by the impact when the rod contacts the adhesive strip, and finally obtain an effective contact pressure value that can ensure the stability and reliability of the adhesive application. This is common knowledge in the art and will not be elaborated here.

[0162] Step S704: Determine the adhesive strength of the rubber head based on the effective contact pressure value and the preset pressure coefficient.

[0163] The pressure coefficient refers to the proportionality factor of the relationship between pressure and viscosity. It is preset by technicians according to the actual situation and will not be elaborated here.

[0164] The degree of tackiness refers to the level of adhesion between the rubber head and the rubber strip.

[0165] The higher the effective contact pressure value, the greater the viscosity. The viscosity is obtained by inputting the effective contact pressure value into a preset viscosity database. The viscosity database is a database that is preset by technicians according to the actual situation. The viscosity database contains the correspondence between the effective contact pressure value and the viscosity. The actual correspondence is preset by technicians according to the actual situation, which will not be elaborated here.

[0166] Step S705: Determine the dwell time coefficient by combining the smoothness parameter and viscosity of the adhesion path.

[0167] The dwell time coefficient refers to the proportion of time that the adhesive head needs to remain in contact during application.

[0168] Higher smoothness results in less impact upon contact, making the adhesive effect easier to stabilize quickly. Lower smoothness requires a longer dwell time to offset the impact on adhesion. Adhesion efficiency is determined by the smoothness parameter of the adhesion path and the adhesive strength of the adhesive head (stronger adhesiveness allows for faster and more stable adhesion of the adhesive strip; weaker adhesiveness requires a longer contact time to ensure adhesion). Finally, an algorithm quantifies and integrates the correlation characteristics of the two factors to derive a dwell time coefficient that is suitable for the current adhesion scenario and ensures that defective adhesive strips are stably adhered. This is common knowledge in the field and will not be elaborated upon here.

[0169] Step S706: Calculate the contact residence time based on the residence time coefficient and the effective contact pressure value.

[0170] Contact dwell time refers to the final duration of contact between the rubber head and the rubber strip.

[0171] The contact residence time is calculated by multiplying the residence time coefficient and the effective contact pressure value.

[0172] Determining the tack parameters based on the weight and size of the adhesive strip includes the following steps: Step S800: Extract the width of the adhesive strip from the size parameters.

[0173] The size parameters include the width of the adhesive strip, which can be directly extracted and used.

[0174] Step S801: Determine the contact area to be adhered based on the width of the adhesive strip and the preset diameter of the adhesive head.

[0175] The diameter of the adhesive tip refers to the diameter of the adhesive tip at the end of the sticky rod. It is preset by technicians according to the actual situation and will not be elaborated here.

[0176] Contact area refers to the actual contact area between the rubber head and the rubber strip.

[0177] Based on the effective contact range and the width of the adhesive strip, the coverage and fit between the adhesive head and the adhesive strip are calculated. If the diameter of the adhesive head does not exceed the width of the adhesive strip, the actual overlapping area between the adhesive head and the adhesive strip is taken as the contact area. If the diameter of the adhesive head is greater than the width of the adhesive strip, the contact range is limited by the width of the adhesive strip. Finally, the effective contact area during adhesion is calculated by combining the two dimensions. This is common knowledge to those skilled in the art and will not be elaborated here.

[0178] Step S802: Calculate the contact area and the preset coverage area to obtain the area ratio.

[0179] The coverage area refers to the minimum area that the rubber head should cover. This is preset by technicians based on the actual situation and will not be elaborated here.

[0180] Area ratio refers to the ratio of the contact area to the coverage area.

[0181] The area ratio is obtained by dividing the contact area by the coverage area.

[0182] Step S803: Determine the range of adhesion angles based on the degree of adhesion and area ratio.

[0183] The adhesive angle range refers to the allowable range of the angle between the adhesive tip and the surface of the adhesive strip.

[0184] The greater the adhesion, the smaller the adhesion angle range; the larger the area ratio, the smaller the adhesion angle range. The adhesion angle range is obtained by inputting the adhesion level and area ratio into a preset adhesion angle range database. The adhesion angle range database is a database preset by technicians according to the actual situation. The adhesion angle range database contains the correspondence between the adhesion level and area ratio and the adhesion angle range. The actual correspondence is preset by technicians according to the actual situation, which will not be elaborated here.

[0185] Step S804: Determine the adhesive angle based on the adhesive angle range and the weight of the adhesive strip.

[0186] The adhesive angle refers to the final determined tilt angle of the adhesive tip.

[0187] Based on the range of adhesive angles, adjustments are made by taking into account the differences in the weight of the adhesive strips. When the adhesive strips are heavier, an angle that can enhance the stability of adhesive application is selected within the range. When the weight is lighter, a more flexible angle is selected to adapt to the situation. The final adhesive angle that meets the range constraints and ensures the reliability of adhesive application is common knowledge to those skilled in the art and will not be elaborated here.

[0188] Step S805: Determine the adhesive application position based on the adhesive strip weight and the set of outline pixel coordinates.

[0189] The method for determining the adhesive position is described in steps S900 to S908, and will not be repeated here.

[0190] Step S806: Use the adhesion angle and adhesion position as adhesion parameters.

[0191] The adhesion angle and adhesion position are used as adhesion parameters to determine the adhesion.

[0192] Determining the adhesion position based on the adhesive strip weight and the set of outline pixel coordinates includes the following steps: Step S900: Extract and determine the geometric boundary of the adhesive strip based on the set of outline pixel coordinates.

[0193] Geometric boundary refers to the geometric description of the edge of the adhesive strip.

[0194] By preprocessing the collected pixel coordinates (removing noise points and redundant coordinates), and then using a feature point detection algorithm to select key coordinates such as vertices and inflection points of the adhesive strip outline, the discrete coordinates are then transformed into continuous and smooth geometric lines through polygon approximation or fitting. Finally, a closed or open boundary that can accurately represent the shape of the adhesive strip is formed, providing a geometric benchmark for subsequent adhesive strip size measurement, specification determination, and screening and sorting. This is common knowledge in the art and will not be elaborated here.

[0195] Step S901: Determine the boundary range of the adhesive strip based on the dimensional parameters and geometric boundaries.

[0196] Boundary range refers to the smallest bounding rectangle area of ​​the adhesive strip in the image.

[0197] First, determine the dimensions of the rubber strip, such as width, length, and thickness. Then, based on the geometric boundaries of the rubber strip, use a preset matching algorithm to define the spatial boundaries of the rubber strip during the cutting and screening process. This ensures that the dimensions of the rubber strip meet the production specifications while avoiding exceeding the geometric range limited by the equipment structure or process. This boundary range is the boundary range. The matching algorithm is preset by technicians according to the actual situation and will not be elaborated here.

[0198] Step S902: Calculate the geometric center coordinates of the adhesive strip based on the boundary range and weight of the adhesive strip.

[0199] The geometric center coordinates refer to the pixel coordinates of the centroid of the adhesive strip.

[0200] Using a two-dimensional plane as a reference, let the minimum x-coordinate of the adhesive strip boundary be x1, the maximum x-coordinate be x2, the minimum y-coordinate be y1, and the maximum y-coordinate be y2. The total weight is a known fixed value G. If the adhesive strip material is uniform (a common scenario in production, where thickness and density are consistent, and weight distribution is synchronized with area distribution), the geometric center coordinates can be directly solved by the average coordinates of the boundary range, i.e., the x-axis coordinate is (x1+x2) / 2 and the y-axis coordinate is (y1+y2) / 2. In this case, the known weight is only used to verify the uniformity of the material (if the weight ratio of each region matches the area ratio, it can be confirmed). No direct participation in the calculation is required; if the adhesive strip has local adhesion, density differences, etc., resulting in uneven weight distribution, the boundary range (x1-x2, y1-y2) needs to be divided into several small rectangular micro-elements first, and the geometric center (xᵢ0, yᵢ0) of each micro-element is calculated. Then, the weight Gᵢ of each micro-element is determined by weighing or weight distribution law (the sum of the weights of all micro-elements is the total weight G). Finally, the overall geometric center coordinates are calculated by weighted average method with the weight of the micro-elements as the weight, that is, the x-axis coordinate is (Σxᵢ0×Gᵢ) / G and the y-axis coordinate is (Σyᵢ0×Gᵢ) / G.

[0201] Step S903: Calculate the initial adhesive position based on the geometric center coordinates and adhesive angle.

[0202] The initial adhesive position refers to the preliminary position without considering the effectiveness of coverage.

[0203] The initial adhesion position is determined using the geometric center coordinates (Cx, Cy) of the rubber strip as the core reference. These coordinates are obtained through image recognition or mechanical measurement and represent the mass symmetry center of the rubber strip. Combined with the preset adhesion angle θ (based on the horizontal axis to clarify the gripping direction of the fixture), and the offset distance L (a reasonable distance from the end of the fixture to the geometric center, taking into account both gripping stability and anti-interference requirements) is determined according to the fixture design parameters. Through polar coordinate transformation logic, the angle and distance parameters are substituted into the coordinate calculation to finally obtain the initial adhesion position (Px, Py) along the adhesion angle direction and at a specific distance from the geometric center. This ensures that the fixture is accurately aligned with the rubber strip to adapt to the gripping area and meets the process requirements of subsequent screening and transfer of the rubber strip.

[0204] Step S904: Determine the effective coverage area of ​​the adhesive location based on the geometric boundary and the degree of adhesion.

[0205] Effective coverage refers to the smallest area where the adhesive tip and adhesive strip are in contact and meet the adhesion requirements.

[0206] First, determine the effective area or radius of the adhesive head for sticking to the adhesive strip based on the degree of adhesion. Then, define the constraint range by combining the geometric boundary of the adhesive strip to ensure that the effective area is completely within the geometric boundary of the adhesive strip. Finally, integrate the two to determine a specific area that matches the adhesive head's adhesion capability without exceeding the outline of the adhesive strip itself. This is the effective coverage range of the sticking position. This is common knowledge for those skilled in the art and will not be elaborated here.

[0207] Step S905: Verify whether the effective coverage area is completely within the boundary of the adhesive strip.

[0208] By comparing the effective coverage area and the boundary area, it is determined whether the effective coverage area is completely within the boundary area of ​​the adhesive strip, which is then used to verify the effective coverage area.

[0209] Step S906: If it is within the boundary range of the adhesive strip, determine the final adhesive position based on the contact pressure value and the initial adhesive position.

[0210] If the area is within the boundary of the adhesive strip, it indicates that the effective coverage area is consistent with reality. Based on the initial adhesion position, the magnitude of the contact pressure value is used to determine whether the position can withstand the corresponding pressure to achieve stable adhesion. At the same time, it is verified whether the effective coverage area corresponding to the initial adhesion position is completely within the boundary of the adhesive strip. If the pressure adaptability and boundary coverage requirements are met, the initial adhesion position is directly set as the final adhesion position. If there is a deviation between pressure and position adaptation or the coverage area exceeds the boundary, the initial adhesion position will be fine-tuned according to the adaptation requirements of the contact pressure value to ensure that the final adhesion position can both allow the contact pressure to be applied evenly to the adhesive strip and fall completely within the boundary of the adhesive strip, thus ensuring the adhesion effect.

[0211] Step S907: If not within the boundary range of the adhesive strip, determine the position parameters based on the boundary range and the effective coverage range.

[0212] Position parameters refer to the offset used to correct the initial position.

[0213] If it is not within the boundary range of the adhesive strip, it means that the effective coverage range does not conform to reality. First, clarify the spatial relationship between the boundary range of the adhesive strip and the effective coverage range of the adhesive application position. Calculate key data such as the offset of the effective coverage range beyond the boundary range and the proportion of overlapping areas. Combine the adhesive application requirements to clarify the direction and magnitude of position adjustment. Finally, integrate this information to form position parameters for correcting the initial adhesive application position.

[0214] Step S908: Adjust the initial adhesive position according to the position parameters and contact pressure value to obtain the adhesive position.

[0215] First, based on the position parameters obtained from the boundary range of the adhesive strip and the effective coverage range of the adhesive application position, it is determined whether the initial adhesive application position is within the boundary of the adhesive strip. Then, taking into account the influence of the contact pressure value, the initial adhesive application position is finely adjusted to ensure that the adjusted adhesive application position is completely within the boundary range of the adhesive strip and can match the contact pressure requirements to ensure adhesive stability. Finally, the final adhesive application position is obtained.

[0216] Based on the same inventive concept, embodiments of the present invention provide a strip-cutting and screening system for a rubber strip cutter, comprising: The acquisition module is used to acquire the sliced ​​image.

[0217] The memory is used to store programs that implement the cutting and screening methods of any rubber strip cutting machine.

[0218] The processor loads and executes programs from memory.

[0219] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0220] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for cutting and screening rubber strips using a rubber strip cutting machine, characterized in that, include: Obtain images of the rubber strips to be screened after being cut by the rubber strip cutting machine; The adhesive strip feature image is obtained by selecting the area with preset adhesive strip features in the cut strip image; Key feature parameters and location of the adhesive strip are extracted from the feature image of the adhesive strip. Based on the extracted key feature parameters and the preset qualified judgment criteria for the adhesive strip, the qualified position of the adhesive strip is determined; Based on the qualified position, the qualified rubber strips are excluded from the rubber strip positions to obtain the screening position; The rubber strip cutter is controlled to separate the remaining unqualified rubber strips at the screening position, and the qualified rubber strips are collected to complete the cutting and screening process.

2. The method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 1, characterized in that, The key feature parameters of the adhesive strip extracted from its feature image include: The set of contour pixel coordinates obtained by extracting the contour of the adhesive strip from the feature image of the adhesive strip; The size parameters of the adhesive strip are calculated based on the set of outline pixel coordinates. Gray-scale distribution recognition is performed on the feature image of the adhesive strip to determine its shape parameters and surface gray-scale values; The grayscale variance is calculated based on the surface grayscale value of the adhesive strip. The flatness parameters of the adhesive strip surface are determined based on the grayscale variance and shape parameters; Dimensional parameters, shape parameters, and flatness parameters are used as key feature parameters.

3. The method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 2, characterized in that, Determining the acceptable position of the adhesive strip includes: The size, shape and flatness parameters in the key feature parameters are compared with the preset qualified judgment standard of the rubber strip to obtain the multi-parameter comparison group and deviation data. The parameter set of the three parameters is determined based on the multi-parameter comparison group; Based on the preset comprehensive judgment rules and the position of the adhesive strip, the parameter set of the three parameters is integrated and screened to obtain the preliminary qualified position and the exclusion position of the adhesive strip; Based on the exclusion locations and deviation data, the deviations of the key characteristic parameters from the pass / fail criteria are reviewed to obtain the review locations; The qualified position of the adhesive strip is determined based on the preliminary qualified position and the verification position.

4. The method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 3, characterized in that, Controlling the rubber strip cutter to separate the remaining substandard rubber strips at screening positions includes: Collect the weight and material of the adhesive strip; Determine the adhesion parameters based on the weight and size parameters of the adhesive strip; The contact pressure value is determined based on the material and viscosity parameters of the adhesive strip; The adhesion path is planned based on the filtering location and viscosity parameters; The contact dwell time is determined based on the adhesion path and contact pressure value; Control the preset adhesive rod to move to the screening position, and perform separation and adhesion operations based on contact dwell time, adhesive parameters and contact pressure value, and then move along the adhesion path to the preset storage area.

5. The method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 4, characterized in that, The contact pressure value is determined based on the material and adhesion parameters of the adhesive strip, including: The contact pressure range is determined by matching the material of the rubber strip. The initial pressure value is determined based on the material of the rubber strip and the preset contact coefficient; The viscosity correction coefficient is determined based on the viscosity parameters and the preset viscosity threshold. The initial contact pressure value is obtained by multiplying the initial pressure value and the viscosity correction factor. If the initial contact pressure value is within the contact pressure range, it is directly used as the contact pressure value. If the initial contact pressure value is not within the contact pressure range, the contact pressure value is adjusted based on the initial contact pressure value and the contact pressure range.

6. The method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 4, characterized in that, The adhesion path is planned based on the filtering location and viscosity parameters, including: The distribution range of qualified adhesive strips and the order of unqualified adhesive strips are determined based on the location of the adhesive strips and the screening location. The working space to be moved is determined based on the image of the cut strips; Determine the constraints of the path based on the distribution range and the workspace; The target order is determined based on the positional order and viscosity parameter markings; Starting from the preset initial standby position of the sticky rod, the path nodes are determined according to the filtering position and the order of the targets; Based on path nodes and constraints, a path is determined as a sticky path using a preset path planning algorithm.

7. The method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 6, characterized in that, Determining the contact dwell time based on the adhesion path and contact pressure value includes: Extract the length, speed, and smoothness parameters of the adhesive path; Based on the length and speed parameters of the adhesive path, calculate the inertia value of the rod as it reaches the contact position of the defective adhesive strip; By combining the smoothness parameter of the adhesive path and the value of motion inertia, the impact influence coefficient when the rod contacts the adhesive strip is determined; The effective contact pressure value is determined by using a pressure correction algorithm based on the contact pressure value and the impact influence coefficient. The adhesive strength of the rubber head is determined based on the effective contact pressure value and the preset pressure coefficient. The dwell time coefficient is determined by combining the smoothness parameter of the adhesion path with the degree of viscosity; The contact dwell time is calculated based on the dwell time coefficient and the effective contact pressure value.

8. The method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 7, characterized in that, The adhesion parameters are determined based on the weight and size parameters of the adhesive strip, including: The width of the adhesive strip is extracted from the dimensional parameters; The contact area to be adhered to is determined based on the width of the adhesive strip and the preset diameter of the adhesive head; The area ratio is obtained by calculating the contact area and the preset coverage area; The range of adhesion angles is determined based on the degree of adhesion and the area ratio. The adhesive angle is determined based on the range of adhesive angles and the weight of the adhesive strip. The adhesion position is determined based on the weight of the adhesive strip and the set of outline pixel coordinates. Adhesion angle and adhesion position are used as adhesion parameters.

9. A method for cutting and screening rubber strips using a rubber strip cutting machine according to claim 8, characterized in that, Determining the adhesion location based on the adhesive strip weight and the set of outline pixel coordinates includes: The geometric boundary of the adhesive strip is determined by extracting the set of pixel coordinates of the strip's outline. The boundary range of the adhesive strip is determined based on the dimensional parameters and geometric boundaries; Calculate the geometric center coordinates of the adhesive strip based on its boundary range and weight; Calculate the initial adhesion position based on the geometric center coordinates and adhesion angle; The effective coverage area of ​​the adhesive application location is determined based on the geometric boundaries and the degree of adhesion. Verify that the effective coverage area is completely within the boundary of the adhesive strip; If it is within the boundary of the adhesive strip, the final adhesive position is determined based on the contact pressure value and the initial adhesive position; If it is not within the boundary of the adhesive strip, determine the position parameters based on the boundary range and the effective coverage area; The initial adhesive position is adjusted based on the position parameters and contact pressure value to obtain the adhesive position.

10. A strip-cutting and screening system for a rubber strip cutting machine, characterized in that, include: The acquisition module is used to acquire the sliced ​​image; A memory for storing a program for implementing the strip cutting and screening method of any one of the rubber strip cutting machines according to claims 1 to 9; The processor loads and executes programs from memory.

Images