A method and system for analyzing and processing hot-melt connection of plastic pipe fittings

Abstract

The present invention relates to the field of plastic processing, and in particular to a method and system for analyzing and processing hot-melt connections of plastic pipe fittings, comprising S1. alignment deviation analysis; S2. hot-melt connection temperature analysis; S3. hot-melt connection pressure analysis; S4. hot-melt connection process evaluation; S5. hot-melt finished product detection; S6. hot-melt finished product analysis; and S7. hot-melt comprehensive evaluation. The system obtains a hot-melt connection process evaluation coefficient of the plastic pipe fitting by comprehensively analyzing the temperature compliance and pressure compliance of the hot-melt connection of the plastic pipe fitting, obtains a quality evaluation coefficient of the plastic pipe fitting according to the quality parameter analysis of the plastic pipe fitting, obtains a hot-melt evaluation index of the plastic pipe fitting according to the hot-melt connection process evaluation coefficient and the quality evaluation coefficient of the plastic pipe fitting, and provides feedback to the hot-melt evaluation index, thereby comprehensively evaluating the key elements of the hot-melt connection process and the quality of the finished product, and helping to improve product quality and production efficiency.

Description

Technical Field

[0001] The invention relates to the field of plastic processing, in particular to a method and system for analyzing and processing hot-melt connection of plastic pipe fittings. Background Art

[0002] With the continuous development of modern industry and construction, plastic materials are widely used in various piping systems because of their good corrosion resistance, light weight, relatively low cost and other advantages. The connection of plastic pipe fittings is one of the key links in building a complete piping system. Among the many connection methods, hot melt connection is favored because it can provide reliable connection strength and good sealing performance.

[0003] In the prior art, a Chinese patent with publication number CN118404818A discloses an intelligent control method for hot-melt connection of plastic pipes. This solution solves the problem of obtaining a suitable hot-melt temperature by measuring the temperature at each time point and adjusting it according to the temperature difference. This can improve the accuracy of temperature control and ensure the hot-melt effect. The method of calculating the sealing degree by detecting the chromaticity values ​​of the pixels of the original image and each water pressure level image solves the problem of sealing degree analysis and can effectively evaluate the sealing performance of the connection.

[0004] However, the above patent has the following problems: First, the solution does not involve pressure detection during the hot-melt connection process of plastic pipe fittings, and it may not be possible to accurately grasp whether the pressure is appropriate, resulting in unstable connection quality and loose connections. At the same time, it is difficult to ensure that each connection operation can achieve the best effect, reducing the reliability of the overall project quality.

[0005] Second, the plan does not involve strength testing of finished plastic pipe fittings, which may not meet the mechanical performance requirements in specific scenarios, thereby affecting the safety and reliability of the product. It may also cause uneven quality of the product and make it difficult to guarantee its overall performance. Summary of the invention

[0006] In order to overcome the shortcomings of the background technology, the embodiments of the present invention provide a method and system for analyzing and processing hot-melt connections of plastic pipes, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions: The present invention provides a method for analyzing and processing hot-melt connections of plastic pipe fittings, and the specific steps are as follows: S1. Alignment deviation analysis: The offset distance of the plastic pipe fitting is obtained by acquiring three-dimensional coordinates and adjusting it.

[0008] S2. Hot melt connection temperature analysis: It is used to detect the temperature parameters of hot melt connection of plastic pipe fittings, and analyze the temperature compliance of hot melt connection of plastic pipe fittings. The temperature parameters include temperature compliance, temperature uniformity and heating stability.

[0009] S3. Hot-melt connection pressure analysis: It is used to detect the pressure parameters of hot-melt connection of plastic pipe fittings, and analyze the pressure compliance of hot-melt connection of plastic pipe fittings. The pressure parameters include pressure uniformity and pressure compliance.

[0010] S4. Hot melt connection process evaluation: The hot melt connection process evaluation coefficient of plastic pipe fittings is obtained based on the temperature compliance and pressure compliance of the hot melt connection of plastic pipe fittings. .

[0011] S5. Hot melt finished product inspection: used to inspect the quality parameters of finished plastic pipe fittings, including sealing and strength qualification.

[0012] S6. Hot melt finished product analysis: used to analyze the quality parameters of plastic pipe fittings to obtain the quality evaluation coefficient of plastic pipe fittings. .

[0013] S7. Comprehensive hot melt evaluation: It is used to analyze and obtain the hot melt evaluation index of plastic pipe fittings based on the hot melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of finished plastic pipe fittings, and provide feedback.

[0014] Preferably, the specific analysis method of the alignment deviation analysis is: in the first step, the two plastic pipes that need to be hot-melt connected are respectively recorded as plastic pipe A and plastic pipe B, and the midpoints of the cross-sections of the hot-melt connection areas of plastic pipe A and plastic pipe B are respectively taken as position points, recorded as position point A and position point B.

[0015] The second step is to obtain the three-dimensional coordinates of position point A and position point B, and obtain the offset distance of the plastic pipe by calculation.

[0016] The third step is to adjust the position of the plastic pipe fitting according to the offset distance of the plastic pipe fitting.

[0017] Preferably, the specific analysis method of the temperature parameters of the hot-melt connection of the plastic pipe fitting is as follows: in the first step, a number of equally spaced detection points are randomly selected in the hot-melt connection area of ​​the plastic pipe fitting, which are recorded as temperature detection points, and a number of time points are randomly selected from the hot-melt connection process of the plastic pipe fitting according to a set time interval, and the heat of each time point in the hot-melt connection area of ​​the plastic pipe fitting is captured by infrared radiation imaging technology, which is converted into a heat map of each time point in the hot-melt connection area of ​​the plastic pipe fitting, and the temperature of each temperature detection point at each time point in the hot-melt connection area of ​​the plastic pipe fitting is read therefrom, which is recorded as , Indicates The number of the time point, , Indicates The number of the temperature detection point, , substituting it into the formula Obtaining temperature uniformity of hot-melt connections for plastic pipe fittings , Indicates the hot melt connection area of ​​plastic pipe fittings The average temperature of the temperature detection points is given by , Indicates the number of temperature detection points, Indicates the number of time points.

[0018] The second step is to read the temperature of each temperature detection point at each time point in the hot melt connection area of ​​the plastic pipe fittings. By taking the average value, the temperature of the hot melt connection area of ​​the plastic pipe at each time point is obtained. , substituting it into the formula Obtain the heating stability of hot-melt connections for plastic pipe fittings .

[0019] The third step is to read the temperature of each temperature detection point at each time point in the hot melt connection area of ​​the plastic pipe fittings. , the maximum and minimum temperatures at each time point in the hot melt connection area of ​​the plastic pipe fittings are screened out and recorded as At the same time, the set hot melt connection temperature range is read from the management database, and the corresponding maximum temperature and minimum temperature are recorded as , substituting it into the formula Get the temperature compliance of hot-melt connection of plastic pipe fittings .

[0020] Preferably, the specific analysis method of the temperature conformity of the plastic pipe hot-melt connection is: respectively reading the temperature uniformity of the plastic pipe hot-melt connection , Heating stability , Temperature compliance , substituting it into the formula Get the temperature compliance of hot melt connection of plastic pipe fittings , They respectively represent the weight factors of the set temperature uniformity, heating stability, and temperature compliance.

[0021] Preferably, the specific analysis method of the pressure compliance degree of the hot-melt connection of the plastic pipe fitting is as follows: the first step is to take a number of detection points on the wall of the plastic pipe fitting according to a set distance, which are recorded as pressure detection points, and at the same time, take a number of time points with equal time intervals according to a set duration, which are recorded as welding time points, and use a pressure measuring instrument to detect the pressure of each pressure detection point at each welding time point of the plastic pipe fitting, which is recorded as , Indicates The number of the welding time point, , Indicates The number of the pressure test point, The average pressure of each pressure detection point at each welding time point of the plastic pipe fitting is obtained by taking the average pressure of each pressure detection point at each welding time point of the plastic pipe fitting, which is recorded as , substituting it into the formula Get the pressure uniformity of plastic pipe fittings At the same time, the maximum and minimum values ​​are selected from the pressures of each pressure detection point at each welding time point of the plastic pipe fittings, and recorded as the maximum pressure and minimum pressure of the plastic pipe fittings. According to the method of analyzing the temperature compliance of the plastic pipe fittings, the maximum pressure and minimum pressure of the plastic pipe fittings are analyzed to obtain the pressure compliance of the plastic pipe fittings, which is recorded as .

[0022] Step 2: Read the pressure uniformity of plastic pipe fittings , Pressure compliance , substituting it into the formula Obtain the pressure compliance of hot-melt connection of plastic pipe fittings ,in They respectively represent the weight factors of the set pressure uniformity and pressure compliance.

[0023] Preferably, the specific analysis method of the evaluation coefficient of the hot-melt connection process of the plastic pipe fitting is: reading the temperature compliance of the hot-melt connection of the plastic pipe fitting , Pressure compliance , substituting it into the formula Get the evaluation coefficient of the hot melt connection process of plastic pipe fittings ,in Represents a natural constant.

[0024] Preferably, the specific analysis method for the hot melt finished product detection is as follows: in the first step, a plastic pipe fitting is randomly selected from the finished plastic pipe fitting as a sealing test sample, which is recorded as the plastic pipe fitting sealing test sample, and a set pressure of gas is filled into the plastic pipe fitting sealing test sample, and the set pressure is recorded as , and take several time points according to the set time length, recorded as air pressure monitoring time points, and monitor the air pressure of the plastic pipe sealing test sample at each air pressure monitoring time point through a pressure gauge, recorded as , Indicates The number of the air pressure monitoring time point, , through the formula Get the sealing of finished plastic pipe fittings ,in Indicates plastic pipe fittings The air pressure at each air pressure monitoring time point, Indicates the number of air pressure monitoring time points.

[0025] In the second step, a plastic pipe is randomly selected from the finished plastic pipe fittings as a bending test sample, which is recorded as the plastic pipe fitting bending test sample. The image of the plastic pipe fitting bending test sample is obtained by acquiring the image of the plastic pipe fitting bending test sample. The plastic pipe fitting bending test sample is placed on a bending testing machine and loaded according to a specified bending radius. Each bending force is slowly applied to the plastic pipe fitting bending test sample according to the set bending force classification, and the image of the plastic pipe fitting under each bending force is acquired, which is recorded as each bending force image of the plastic pipe fitting. The degree of overlap between the plastic pipe fitting and the bending test sample image under each bending force is obtained by superimposing the plastic pipe fitting bending test sample image with the bending force images of the plastic pipe fitting. The images are arranged in order from large to small and compared with the preset overlapping degree thresholds respectively. The bending force at which the overlap degree between the first plastic pipe fitting and the bending test sample image is less than the preset overlapping degree threshold is recorded as the maximum bending force of the plastic pipe fitting, which is recorded as .

[0026] The third step is to randomly select one from the finished plastic pipe fittings as a reverse pressure test sample, recorded as the plastic pipe fitting pressure test sample, install the plastic pipe fitting pressure test sample on the test fixture, and apply reverse pressures of different levels to the plastic pipe fitting pressure test sample in turn according to the set pressure classification, recorded as each level of reverse pressure, through the pressure applying device to obtain the image of the plastic pipe fitting under each level of reverse pressure, and analyze the image of the plastic pipe fitting under each level of reverse pressure according to the method of analyzing the degree of overlap between the plastic pipe fitting and the bending test sample image under each bending force, and obtain the degree of overlap between the plastic pipe fitting and the bending test sample image under each level of reverse pressure, and then screen the maximum bearing pressure of the plastic pipe fitting according to the method of screening the maximum bending force of the plastic pipe fitting, recorded as .

[0027] The fourth step is to use the formula Get the strength qualification of finished plastic pipe fittings , They represent the reference values ​​of the set maximum bending force and the maximum bearing pressure respectively. Indicates the weighting factor of the set maximum bending force and maximum bearing pressure.

[0028] Preferably, the specific analysis method of the hot melt finished product analysis is: reading the sealing properties of the finished plastic pipe fittings respectively , strength qualification , through the formula Get the quality evaluation coefficient of finished plastic pipe fittings , The weight factor representing the set sealing and strength qualification level, Indicates the preset sealing reference value.

[0029] Preferably, the specific analysis method of the hot melt comprehensive evaluation is: reading the hot melt connection process evaluation coefficient of the plastic pipe fitting , Quality evaluation coefficient of finished plastic pipe fittings , substituting it into the formula Get the hot melt evaluation index of plastic pipe fittings , It represents a natural constant. The hot melt evaluation index of the plastic pipe fitting is compared with the preset hot melt evaluation index threshold. If the hot melt evaluation index of the plastic pipe fitting is greater than or equal to the preset hot melt evaluation index threshold, it means that the hot melt evaluation index of the plastic pipe fitting is qualified. Otherwise, it means that it is unqualified, and feedback is given.

[0030] Preferably, the present invention provides a plastic pipe hot-melt connection analysis and processing system, the analysis and processing system comprising: an alignment deviation analysis module for obtaining the offset distance of the plastic pipe by acquiring three-dimensional coordinates and adjusting it.

[0031] The hot melt connection temperature analysis module is used to detect the temperature parameters of the hot melt connection of plastic pipe fittings, and analyze the temperature compliance of the hot melt connection of plastic pipe fittings. The temperature parameters include temperature compliance, temperature uniformity, and heating stability.

[0032] The hot melt connection pressure analysis module is used to detect the pressure parameters of the hot melt connection of plastic pipe fittings, and analyze the pressure compliance of the hot melt connection of plastic pipe fittings. The pressure parameters include pressure uniformity and pressure compliance.

[0033] The hot melt connection process evaluation module is used to analyze the temperature compliance and pressure compliance of the hot melt connection of plastic pipe fittings to obtain the hot melt connection process evaluation coefficient of plastic pipe fittings. .

[0034] The hot-melt finished product inspection module is used to inspect the quality parameters of finished plastic pipe fittings, including sealing and strength qualification.

[0035] Hot melt finished product analysis module, used to analyze the quality parameters of plastic pipe fittings to obtain the quality evaluation coefficient of plastic pipe fittings .

[0036] The hot melt comprehensive evaluation module is used to analyze and obtain the hot melt evaluation index of plastic pipe fittings based on the hot melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of finished plastic pipe fittings, and provide feedback thereon.

[0037] The management database is used to store the set hot melt connection temperature range.

[0038] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects: 1. The present invention obtains the offset distance of the plastic pipe by acquiring the three-dimensional coordinates and adjusts it, thereby effectively reducing problems such as installation errors or loose connections caused by pipe offset, and helps to improve the overall performance and quality level of the product.

[0039] 2. The present invention obtains the temperature compliance of the hot-melt connection of plastic pipe fittings by analyzing the temperature parameters of the hot-melt connection of plastic pipe fittings, obtains the pressure compliance of the hot-melt connection of plastic pipe fittings by analyzing the pressure parameters of the hot-melt connection of plastic pipe fittings, and then obtains the hot-melt connection process evaluation coefficient of the plastic pipe fittings through comprehensive analysis, which helps to timely discover the situation that the temperature or pressure does not meet the requirements, so as to take targeted measures to adjust and improve the connection quality.

[0040] 3. The present invention obtains the quality evaluation coefficient of the finished plastic pipe fittings according to the quality parameter analysis of the finished plastic pipe fittings, which helps to timely discover quality problems, improve and optimize the production process in a targeted manner, and ensure the stability of product quality.

[0041] 4. The present invention obtains the hot melt evaluation index of plastic pipe fittings based on the hot melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of finished plastic pipe fittings, and provides feedback thereon, which helps to timely adjust production strategies and process parameters to improve product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0043] Figure 1 The present invention is a flow chart of a method for analyzing and processing hot-melt connections of plastic pipe fittings.

[0044] Figure 2 for Figure 1 Flow chart of step S1 in FIG.

[0045] Figure 3 The module connection diagram of a plastic pipe hot-melt connection analysis and processing system. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 As shown, a method for analyzing and processing hot-melt connection of plastic pipe fittings, the specific steps of the analysis and processing method are as follows: S1. Alignment deviation analysis: the offset distance of the plastic pipe fitting is obtained by acquiring the three-dimensional coordinates, and it is adjusted.

[0048] See also Figure 2 As shown, the specific analysis method of the alignment deviation analysis is: in the first step, the two plastic pipes that need to be hot-melt connected are respectively recorded as plastic pipe A and plastic pipe B, and the midpoints of the cross-sections of the hot-melt connection areas of plastic pipe A and plastic pipe B are respectively taken as position points, recorded as position point A and position point B; the specific connection positions and focus points are clarified to facilitate more accurate operation and analysis.

[0049] The second step is to obtain the three-dimensional coordinates of position point A and position point B, and obtain the offset distance of the plastic pipe by calculation.

[0050] It should be noted that the specific analysis method of the offset distance of the plastic pipe is: obtain the three-dimensional coordinates of the position point A and the position point B, respectively recorded as , , Respectively represent the horizontal coordinate, vertical coordinate, and vertical coordinate of the position point A, through the formula Get the offset distance of plastic pipe fittings .

[0051] The third step is to adjust the position of the plastic pipe fitting according to the offset distance of the plastic pipe fitting.

[0052] S2. Hot melt connection temperature analysis: It is used to detect the temperature parameters of hot melt connection of plastic pipe fittings, and analyze the temperature compliance of hot melt connection of plastic pipe fittings. The temperature parameters include temperature compliance, temperature uniformity and heating stability.

[0053] The specific analysis method of the temperature parameters of the hot-melt connection of the plastic pipe fittings is as follows: the first step is to select a number of equally spaced detection points in the hot-melt connection area of ​​the plastic pipe fittings, which are recorded as temperature detection points, and to select a number of time points at random from the hot-melt connection process of the plastic pipe fittings according to a set time interval, and to capture the heat of the hot-melt connection area of ​​the plastic pipe fittings at each time point by infrared radiation imaging technology, and to convert it into a heat map of each time point in the hot-melt connection area of ​​the plastic pipe fittings, and to read the temperature of each temperature detection point at each time point in the hot-melt connection area of ​​the plastic pipe fittings, which is recorded as , Indicates The number of the time point, , Indicates The number of the temperature detection point, , substituting it into the formula Obtaining temperature uniformity of hot-melt connections for plastic pipe fittings , Indicates the hot melt connection area of ​​plastic pipe fittings The average temperature of the temperature detection points is given by , Indicates the number of temperature detection points, Indicates the number of time points; through monitoring of multiple detection points and time points, the quality of the hot melt connection can be understood more accurately, which helps to detect potential problems in time and improve the reliability of the connection.

[0054] The second step is to read the temperature of each temperature detection point at each time point in the hot melt connection area of ​​the plastic pipe fittings. By taking the average value, the temperature of the hot melt connection area of ​​the plastic pipe at each time point is obtained. , substituting it into the formula Obtain the heating stability of hot-melt connections for plastic pipe fittings ; Clarifying the degree of heating stability helps ensure the consistency of connection quality, avoids connection defects caused by temperature fluctuations, and can promptly detect abnormal conditions that may occur during the heating process, making it easier to take adjustment measures.

[0055] The third step is to read the temperature of each temperature detection point at each time point in the hot melt connection area of ​​the plastic pipe fittings. , the maximum and minimum temperatures at each time point in the hot melt connection area of ​​the plastic pipe fittings are screened out and recorded as At the same time, the set hot melt connection temperature range is read from the management database, and the corresponding maximum temperature and minimum temperature are recorded as , substituting it into the formula Get the temperature compliance of hot-melt connection of plastic pipe fittings It helps to ensure that the connection process is within the appropriate temperature range, guarantee the connection quality, and promptly detect situations where the temperature does not meet the requirements so that adjustments and improvements can be made, making the monitoring of the connection temperature more precise and comprehensive, and improving the level of quality control.

[0056] The specific analysis method of the temperature uniformity of the plastic pipe hot melt connection is: read the temperature uniformity of the plastic pipe hot melt connection respectively. , Heating stability , Temperature compliance , substituting it into the formula Get the temperature compliance of hot melt connection of plastic pipe fittings , They represent the weight factors of the set temperature uniformity, heating stability, and temperature compliance respectively; they help to accurately identify problems and deficiencies in temperature so that targeted improvement measures can be taken to better ensure the quality and reliability of hot-melt connections and reduce connection defects caused by temperature factors.

[0057] It should be noted that, in a specific embodiment, It can be set to 0.4. It can be set to 0.4. It can be set to 0.2. Temperature uniformity is usually more important because if the temperature is not uniform, it may cause loose connections or defects in some areas, which will have a greater impact on the overall connection quality. Heating stability is also more important. Unstable heating may cause large temperature fluctuations, which in turn affects the connection effect. Temperature compliance is directly related to whether the appropriate hot melt temperature range is reached, but it may be slightly less important than the first two. Therefore, the weights corresponding to temperature uniformity and heating stability are higher.

[0058] S3. Hot-melt connection pressure analysis: It is used to detect the pressure parameters of hot-melt connection of plastic pipe fittings, and analyze the pressure compliance of hot-melt connection of plastic pipe fittings. The pressure parameters include pressure uniformity and pressure compliance.

[0059] The specific analysis method of the pressure compliance degree of the hot-melt connection of the plastic pipe fitting is as follows: the first step is to take a number of detection points on the wall of the plastic pipe fitting according to the set distance, which are recorded as each pressure detection point, and at the same time, take a number of time points with equal time intervals according to the set duration, which are recorded as each welding time point, and use a pressure measuring instrument to detect the pressure of each pressure detection point at each welding time point of the plastic pipe fitting, which is recorded as , Indicates The number of the welding time point, , Indicates The number of the pressure test point, The average pressure of each pressure detection point at each welding time point of the plastic pipe fitting is obtained by taking the average pressure of each pressure detection point at each welding time point of the plastic pipe fitting, which is recorded as , substituting it into the formula Get the pressure uniformity of plastic pipe fittings At the same time, the maximum and minimum values ​​are selected from the pressures of each pressure detection point at each welding time point of the plastic pipe fittings, and recorded as the maximum pressure and minimum pressure of the plastic pipe fittings. According to the method of analyzing the temperature compliance of the plastic pipe fittings, the maximum pressure and minimum pressure of the plastic pipe fittings are analyzed to obtain the pressure compliance of the plastic pipe fittings, which is recorded as It can accurately understand the distribution and changes of pressure of plastic pipe fittings during the hot melting process, which helps to optimize process parameters, improve connection quality, have a more comprehensive understanding and evaluation of the overall performance of pipe fittings, and timely discover potential problems and make adjustments.

[0060] Step 2: Read the pressure uniformity of plastic pipe fittings , Pressure compliance , substituting it into the formula Obtain the pressure compliance of hot-melt connection of plastic pipe fittings ,in They respectively represent the weight factors of the set pressure uniformity and pressure compliance; they help to better understand the pressure performance of plastic pipe fittings, help to improve the consistency and reliability of product quality, and ensure the stable performance of products during use.

[0061] It should be noted that, in a specific embodiment, It can be set to 0.6. It can be set to 0.4. The pressure uniformity directly affects the fusion quality of the connection interface. If the pressure is uneven, it may lead to insufficient local connection or stress concentration, which will have a greater impact on the reliability and stability of the connection. The pressure compliance may be slightly less important than the pressure uniformity. If the pressure does not meet the requirements, it will also have an adverse effect on the connection quality. However, in some cases, it may be relatively easy to make up for it by properly adjusting the process. Therefore, the weight corresponding to the pressure uniformity is relatively high.

[0062] S4. Hot melt connection process evaluation: The hot melt connection process evaluation coefficient of plastic pipe fittings is obtained based on the temperature compliance and pressure compliance of the hot melt connection of plastic pipe fittings. .

[0063] The specific analysis method of the evaluation coefficient of the hot-melt connection process of the plastic pipe fittings is as follows: , Pressure compliance , substituting it into the formula Get the evaluation coefficient of the hot melt connection process of plastic pipe fittings ,in It represents a natural constant. It can more comprehensively reflect the overall quality and performance of hot-melt connections of plastic pipe fittings, covering the two key factors of temperature and pressure. It helps to accurately judge the quality of the hot-melt connection process and provide a strong basis for process optimization and quality control.

[0064] S5. Hot melt finished product inspection: used to inspect the quality parameters of finished plastic pipe fittings, including sealing and strength qualification.

[0065] The specific analysis method of the hot melt finished product detection is as follows: the first step is to randomly select a plastic pipe fitting from the finished product as a sealing test sample, which is recorded as the plastic pipe fitting sealing test sample, and fill the plastic pipe fitting sealing test sample with a set pressure of gas, and record the set pressure as , and take several time points according to the set time length, recorded as air pressure monitoring time points, and monitor the air pressure of the plastic pipe sealing test sample at each air pressure monitoring time point through a pressure gauge, recorded as , Indicates The number of the air pressure monitoring time point, , through the formula Get the sealing of finished plastic pipe fittings ,in Indicates plastic pipe fittings The air pressure at each air pressure monitoring time point, Indicates the number of air pressure monitoring time points; it can accurately grasp the air pressure changes at different time points, so as to fully understand the dynamic changes of sealing performance over time, which is helpful to timely discover products with substandard sealing performance, take improvement measures and improve product quality.

[0066] In the second step, a plastic pipe is randomly selected from the finished plastic pipe fittings as a bending test sample, which is recorded as the plastic pipe fitting bending test sample. The image of the plastic pipe fitting bending test sample is obtained by acquiring the image of the plastic pipe fitting bending test sample. The plastic pipe fitting bending test sample is placed on a bending testing machine and loaded according to a specified bending radius. Each bending force is slowly applied to the plastic pipe fitting bending test sample according to the set bending force classification, and the image of the plastic pipe fitting under each bending force is acquired, which is recorded as each bending force image of the plastic pipe fitting. The degree of overlap between the plastic pipe fitting and the bending test sample image under each bending force is obtained by superimposing the plastic pipe fitting bending test sample image with the bending force images of the plastic pipe fitting. The images are arranged in order from large to small and compared with the preset overlapping degree thresholds respectively. The bending force at which the overlap degree between the first plastic pipe fitting and the bending test sample image is less than the preset overlapping degree threshold is recorded as the maximum bending force of the plastic pipe fitting, which is recorded as ; The bending performance of plastic pipe fittings and the maximum bending force they can withstand are determined, which can fully understand the state of the pipe fittings under different bending forces, help better control product quality, so as to optimize production and improve the process.

[0067] It should be noted that the specific analysis method of the degree of overlap between the plastic pipe fitting and the bending test sample image under each bending force is: reading the plastic pipe fitting bending test sample image and the plastic pipe fitting bending force images, and superimposing them to obtain the number of overlapping pixels between the plastic pipe fitting and the bending test sample image under each bending force, recorded as , Indicates Number of bending forces, , and the total number of pixels of the sample image of the plastic pipe bending test is extracted and recorded as , through the formula Obtain the degree of overlap between the plastic pipe and the bending test sample image under each bending force .

[0068] The third step is to randomly select one from the finished plastic pipe fittings as a reverse pressure test sample, recorded as the plastic pipe fitting pressure test sample, install the plastic pipe fitting pressure test sample on the test fixture, and apply reverse pressures of different levels to the plastic pipe fitting pressure test sample in turn according to the set pressure classification, recorded as each level of reverse pressure, through the pressure applying device to obtain the image of the plastic pipe fitting under each level of reverse pressure, and analyze the image of the plastic pipe fitting under each level of reverse pressure according to the method of analyzing the degree of overlap between the plastic pipe fitting and the bending test sample image under each bending force, and obtain the degree of overlap between the plastic pipe fitting and the bending test sample image under each level of reverse pressure, and then screen the maximum bearing pressure of the plastic pipe fitting according to the method of screening the maximum bending force of the plastic pipe fitting, recorded as It can accurately evaluate the hardness performance of plastic pipes under different pressures, determine the maximum pressure limit that plastic pipes can withstand, screen out key maximum pressure indicators, and provide a strong basis for product quality control.

[0069] The fourth step is to use the formula Get the strength qualification of finished plastic pipe fittings , They represent the reference values ​​of the set maximum bending force and the maximum bearing pressure respectively. It indicates the weighting factor of the set maximum bending force and maximum bearing pressure. It can intuitively understand the degree of compliance of the product hardness with the standard requirements, which is helpful to accurately control the product quality and clarify the specific conditions of the product hardness so as to adjust the production or take improvement measures in time.

[0070] It should be noted that, in a specific embodiment, It can be set to 0.4. It can be set to 0.6. The maximum bearing pressure directly reflects how much pressure the plastic pipe can withstand without being damaged in actual use, which is crucial to its safety and reliability in various application scenarios. The maximum bending force is also important, which reflects the ability of the pipe to resist bending and deformation. However, in some cases, compared with the bearing pressure, its impact on the overall strength qualification may be slightly less, so the weight corresponding to the maximum bearing pressure is higher.

[0071] S6. Hot melt finished product analysis: used to analyze the quality parameters of plastic pipe fittings to obtain the quality evaluation coefficient of plastic pipe fittings. .

[0072] The specific analysis method of the hot melt finished product analysis is: read the sealing properties of the finished plastic pipe fittings respectively. , strength qualification , through the formula Get the quality evaluation coefficient of finished plastic pipe fittings , The weight factor representing the set sealing and strength qualification level, It indicates the preset sealing reference value. It can comprehensively consider the performance of the product in key aspects such as sealing and hardness, avoid the limitation of a single indicator, provide a clear direction for the optimization and improvement of the production process, and improve product quality in a targeted manner.

[0073] It should be noted that, in a specific embodiment, It can be set to 0.6. It can be set to 0.4. Good sealing is the key to plastic pipe fittings to perform their functions, such as preventing leakage in the pipeline system. Once there is a problem with the sealing, it may cause a series of serious consequences and have a significant impact on the operation of the entire system. The qualified degree of strength is related to the reliability and durability of the pipe fittings during use. However, relatively speaking, in some cases, if the strength is slightly insufficient but still meets the basic use requirements, and there is a problem with the sealing, it may be more fatal. Therefore, the corresponding weight of the sealing is higher.

[0074] S7. Comprehensive hot melt evaluation: It is used to analyze and obtain the hot melt evaluation index of plastic pipe fittings based on the hot melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of finished plastic pipe fittings, and provide feedback.

[0075] The specific analysis method of the hot melt comprehensive evaluation is: reading the hot melt connection process evaluation coefficient of plastic pipe fittings , Quality evaluation coefficient of finished plastic pipe fittings , substituting it into the formula Get the hot melt evaluation index of plastic pipe fittings , It represents a natural constant. The hot melt evaluation index of the plastic pipe fitting is compared with the preset hot melt evaluation index threshold. If the hot melt evaluation index of the plastic pipe fitting is greater than or equal to the preset hot melt evaluation index threshold, it means that the hot melt evaluation index of the plastic pipe fitting is qualified. Otherwise, it means that it is unqualified, and feedback is given to it. It can timely discover possible problems in the hot melt connection process so as to take targeted measures to improve them and ensure the stability and reliability of the overall quality of the plastic pipe fittings.

[0076] See also Figure 3 As shown, in addition, the present invention provides a plastic pipe hot-melt connection analysis and processing system, which includes an alignment deviation analysis module, a hot-melt connection temperature analysis module, a hot-melt connection pressure analysis module, a hot-melt connection process evaluation module, a hot-melt finished product detection module, a hot-melt finished product analysis module, a hot-melt comprehensive evaluation module, and a management database.

[0077] The management database is connected to the alignment deviation analysis module, the hot melt connection temperature analysis module, the hot melt connection pressure analysis module, the hot melt connection process evaluation module, the hot melt finished product analysis module, and the hot melt comprehensive evaluation module; the hot melt finished product detection module is connected to the hot melt finished product analysis module; the hot melt connection process evaluation module is connected to the hot melt connection temperature analysis module and the hot melt connection pressure analysis module.

[0078] The alignment deviation analysis module is used to obtain the offset distance of the plastic pipe by acquiring the three-dimensional coordinates and adjust it.

[0079] The hot melt connection temperature analysis module is used to detect the temperature parameters of the hot melt connection of plastic pipe fittings, and analyze the temperature compliance of the hot melt connection of plastic pipe fittings. The temperature parameters include temperature compliance, temperature uniformity, and heating stability.

[0080] The hot melt connection pressure analysis module is used to detect the pressure parameters of the hot melt connection of plastic pipe fittings, and analyze the pressure compliance of the hot melt connection of plastic pipe fittings. The pressure parameters include pressure uniformity and pressure compliance.

[0081] The hot melt connection process evaluation module is used to analyze the temperature compliance and pressure compliance of the hot melt connection of plastic pipe fittings to obtain the hot melt connection process evaluation coefficient of plastic pipe fittings. .

[0082] The hot-melt finished product inspection module is used to inspect the quality parameters of finished plastic pipe fittings, including sealing and strength qualification.

[0083] Hot melt finished product analysis module, used to analyze the quality parameters of plastic pipe fittings to obtain the quality evaluation coefficient of plastic pipe fittings .

[0084] The hot melt comprehensive evaluation module is used to analyze and obtain the hot melt evaluation index of plastic pipe fittings based on the hot melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of finished plastic pipe fittings, and provide feedback thereon.

[0085] The management database is used to store the set hot melt connection temperature range.

[0086] This system obtains the hot-melt connection process evaluation coefficient of plastic pipe fittings by comprehensively analyzing the temperature compliance and pressure compliance of hot-melt connection of plastic pipe fittings, obtains the quality evaluation coefficient of plastic pipe fittings based on the quality parameters of the finished plastic pipe fittings, obtains the hot-melt evaluation index of plastic pipe fittings based on the hot-melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of the finished plastic pipe fittings, and provides feedback to comprehensively evaluate the key factors of the hot-melt connection process and the quality of the finished product, which helps to improve product quality and production efficiency.

[0087] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A method for analyzing and processing hot-melt connection of plastic pipe fittings, characterized in that: The specific steps of the analysis and processing method are as follows: S1. Alignment deviation analysis: obtain the offset distance of the plastic pipe by obtaining the three-dimensional coordinates and adjust it; S2. Hot melt connection temperature analysis: used to detect the temperature parameters of hot melt connection of plastic pipe fittings, and analyze the temperature compliance of hot melt connection of plastic pipe fittings. The temperature parameters include temperature compliance, temperature uniformity, and heating stability; S3. Hot-melt connection pressure analysis: used to detect the pressure parameters of hot-melt connection of plastic pipe fittings, and analyze the pressure compliance of hot-melt connection of plastic pipe fittings. The pressure parameters include pressure uniformity and pressure compliance. S4. Hot melt connection process evaluation: The hot melt connection process evaluation coefficient of plastic pipe fittings is obtained based on the temperature compliance and pressure compliance of the hot melt connection of plastic pipe fittings. ; S5. Hot melt finished product inspection: used to inspect the quality parameters of finished plastic pipe fittings, including sealing and strength qualification; S6. Hot melt finished product analysis: used to analyze the quality parameters of plastic pipe fittings to obtain the quality evaluation coefficient of plastic pipe fittings. ; S7. Comprehensive evaluation of hot melt: used to analyze and obtain the hot melt evaluation index of plastic pipe fittings based on the hot melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of finished plastic pipe fittings, and provide feedback; The specific analysis method of the temperature parameters of the hot-melt connection of the plastic pipe fittings is: In the first step, several equally spaced detection points are randomly selected in the hot-melt connection area of ​​the plastic pipe fitting, which are recorded as temperature detection points. Several time points are randomly selected from the hot-melt connection process of the plastic pipe fitting according to the set time interval, and the heat of each time point in the hot-melt connection area of ​​the plastic pipe fitting is captured by infrared radiation imaging technology, which is converted into a heat map of each time point in the hot-melt connection area of ​​the plastic pipe fitting, and the temperature of each temperature detection point at each time point in the hot-melt connection area of ​​the plastic pipe fitting is read therefrom, which is recorded as , Indicates The number of the time point, , Indicates The number of the temperature detection point, , substituting it into the formula Obtaining temperature uniformity of hot-melt connections for plastic pipe fittings , Indicates the hot melt connection area of ​​plastic pipe fittings The average temperature of the temperature detection points is given by , Indicates the number of temperature detection points, Indicates the number of time points; The second step is to read the temperature of each temperature detection point at each time point in the hot melt connection area of ​​the plastic pipe fittings. By taking the average value, the temperature of the hot melt connection area of ​​the plastic pipe at each time point is obtained. , substituting it into the formula Obtain the heating stability of hot-melt connections for plastic pipe fittings ; The third step is to read the temperature of each temperature detection point at each time point in the hot melt connection area of ​​the plastic pipe fittings. , the maximum and minimum temperatures at each time point in the hot melt connection area of ​​the plastic pipe fittings are screened out and recorded as At the same time, the set hot melt connection temperature range is read from the management database, and the corresponding maximum temperature and minimum temperature are recorded as , substituting it into the formula Get the temperature compliance of hot-melt connection of plastic pipe fittings ; The specific analysis method of the temperature compliance degree of the hot-melt connection of the plastic pipe fittings is as follows: Read the temperature uniformity of the hot melt connection of plastic pipe fittings separately , Heating stability , Temperature compliance , substituting it into the formula Get the temperature compliance of hot melt connection of plastic pipe fittings , Respectively represent the weight factors of the set temperature uniformity, heating stability, and temperature compliance; The specific analysis method for the pressure compliance degree of the hot-melt connection of the plastic pipe fittings is: In the first step, several detection points are taken on the wall of the plastic pipe fitting according to the set distance, which are recorded as pressure detection points. At the same time, several time points with equal time intervals are taken according to the set duration, which are recorded as welding time points. The pressure of each pressure detection point at each welding time point of the plastic pipe fitting is detected by a pressure measuring instrument, which is recorded as , Indicates The number of the welding time point, , Indicates The number of the pressure test point, The average pressure of each pressure detection point at each welding time point of the plastic pipe fitting is obtained by taking the average pressure of each pressure detection point at each welding time point of the plastic pipe fitting, which is recorded as , substituting it into the formula Get the pressure uniformity of plastic pipe fittings At the same time, the maximum and minimum values ​​are selected from the pressures of each pressure detection point at each welding time point of the plastic pipe fittings, and recorded as the maximum pressure and minimum pressure of the plastic pipe fittings. According to the method of analyzing the temperature compliance of the plastic pipe fittings, the maximum pressure and minimum pressure of the plastic pipe fittings are analyzed to obtain the pressure compliance of the plastic pipe fittings, which is recorded as ; Step 2: Read the pressure uniformity of plastic pipe fittings , Pressure compliance , substituting it into the formula Obtain the pressure compliance of hot-melt connection of plastic pipe fittings ,in Respectively represent the weight factors of the set pressure uniformity and pressure compliance; The specific analysis method of the evaluation coefficient of the hot melt connection process of the plastic pipe fittings is: Read the temperature compliance of hot-melt connections for plastic pipe fittings , Pressure compliance , substituting it into the formula Get the evaluation coefficient of the hot melt connection process of plastic pipe fittings ,in represents a natural constant; The specific analysis method for the hot melt finished product detection is: In the first step, a sample is randomly selected from the finished plastic pipe fittings as a sealing test sample, which is recorded as the plastic pipe fitting sealing test sample. A set pressure of gas is filled into the plastic pipe fitting sealing test sample, and the set pressure is recorded as , and take several time points according to the set time length, recorded as air pressure monitoring time points, and monitor the air pressure of the plastic pipe sealing test sample at each air pressure monitoring time point through a pressure gauge, recorded as , Indicates The number of the air pressure monitoring time point, , through the formula Get the sealing of finished plastic pipe fittings ,in Indicates plastic pipe fittings The air pressure at each air pressure monitoring time point, Indicates the number of air pressure monitoring time points; In the second step, a plastic pipe is randomly selected from the finished plastic pipe fittings as a bending test sample, which is recorded as the plastic pipe fitting bending test sample. The image of the plastic pipe fitting bending test sample is obtained by acquiring the image of the plastic pipe fitting bending test sample. The plastic pipe fitting bending test sample is placed on a bending testing machine and loaded according to a specified bending radius. Each bending force is slowly applied to the plastic pipe fitting bending test sample according to the set bending force classification, and the image of the plastic pipe fitting under each bending force is acquired, which is recorded as each bending force image of the plastic pipe fitting. The degree of overlap between the plastic pipe fitting and the bending test sample image under each bending force is obtained by superimposing the plastic pipe fitting bending test sample image with the bending force images of the plastic pipe fitting. The images are arranged in order from large to small and compared with the preset overlapping degree thresholds respectively. The bending force at which the overlap degree between the first plastic pipe fitting and the bending test sample image is less than the preset overlapping degree threshold is recorded as the maximum bending force of the plastic pipe fitting, which is recorded as ; The third step is to randomly select one from the finished plastic pipe fittings as a reverse pressure test sample, recorded as the plastic pipe fitting pressure test sample, install the plastic pipe fitting pressure test sample on the test fixture, and apply reverse pressures of different levels to the plastic pipe fitting pressure test sample in turn according to the set pressure classification, recorded as each level of reverse pressure, through the pressure applying device to obtain the image of the plastic pipe fitting under each level of reverse pressure, and analyze the image of the plastic pipe fitting under each level of reverse pressure according to the method of analyzing the degree of overlap between the plastic pipe fitting and the bending test sample image under each bending force, and obtain the degree of overlap between the plastic pipe fitting and the bending test sample image under each level of reverse pressure, and then screen the maximum bearing pressure of the plastic pipe fitting according to the method of screening the maximum bending force of the plastic pipe fitting, recorded as ; The fourth step is to use the formula Get the strength qualification of finished plastic pipe fittings , They represent the reference values ​​of the set maximum bending force and the maximum bearing pressure respectively. Indicates the weight factor of the set maximum bending force and maximum bearing pressure; The specific analysis method for the hot melt finished product analysis is: Read the sealing performance of finished plastic pipe fittings separately , strength qualification , through the formula Get the quality evaluation coefficient of finished plastic pipe fittings , The weight factor representing the set sealing and strength qualification level, Indicates the preset sealing reference value; The specific analysis method of the hot melt comprehensive evaluation is: Read the evaluation coefficient of the hot melt connection process of plastic pipe fittings , Quality evaluation coefficient of finished plastic pipe fittings , substituting it into the formula Get the hot melt evaluation index of plastic pipe fittings , It represents a natural constant. The hot melt evaluation index of the plastic pipe fitting is compared with the preset hot melt evaluation index threshold. If the hot melt evaluation index of the plastic pipe fitting is greater than or equal to the preset hot melt evaluation index threshold, it means that the hot melt evaluation index of the plastic pipe fitting is qualified. Otherwise, it means that it is unqualified, and feedback is given.

2. A method for analyzing and processing hot-melt connection of plastic pipe fittings according to claim 1, characterized in that: The specific analysis method of the alignment deviation analysis is: In the first step, the two plastic pipes to be hot-melt connected are respectively marked as plastic pipe A and plastic pipe B, and the midpoints of the cross sections of the hot-melt connection areas of the plastic pipes A and plastic pipes B are respectively taken as position points, which are marked as position point A and position point B; The second step is to obtain the three-dimensional coordinates of position point A and position point B, and obtain the offset distance of the plastic pipe by calculation; The third step is to adjust the position of the plastic pipe fitting according to the offset distance of the plastic pipe fitting.

3. A plastic pipe hot melt connection analysis and processing system, used to execute the steps in the method according to claim 1, characterized in that: The system specifically includes the following modules: The alignment deviation analysis module is used to obtain the offset distance of the plastic pipe by acquiring the three-dimensional coordinates and adjust it; The hot melt connection temperature analysis module is used to detect the temperature parameters of the hot melt connection of plastic pipe fittings and analyze the temperature compliance of the hot melt connection of plastic pipe fittings. The temperature parameters include temperature compliance, temperature uniformity, and heating stability. The hot melt connection pressure analysis module is used to detect the pressure parameters of the hot melt connection of plastic pipe fittings and analyze the pressure compliance of the hot melt connection of plastic pipe fittings. The pressure parameters include pressure uniformity and pressure compliance. The hot melt connection process evaluation module is used to analyze the temperature compliance and pressure compliance of the hot melt connection of plastic pipe fittings to obtain the hot melt connection process evaluation coefficient of plastic pipe fittings. ; Hot-melt finished product inspection module is used to inspect the quality parameters of finished plastic pipe fittings, including sealing and strength qualification; Hot melt finished product analysis module, used to analyze the quality parameters of plastic pipe fittings to obtain the quality evaluation coefficient of plastic pipe fittings ; The hot melt comprehensive evaluation module is used to analyze and obtain the hot melt evaluation index of plastic pipe fittings based on the hot melt connection process evaluation coefficient of plastic pipe fittings and the quality evaluation coefficient of finished plastic pipe fittings, and provide feedback thereon; The management database is used to store the set hot melt connection temperature range.

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