A production quality control method of a sunshade curtain accessory

Abstract

This invention discloses a production quality control method for sunshade curtain accessories, specifically relating to the field of production quality control. It addresses the problem in existing sunshade curtain accessory production that it is difficult to address the differences in regional environments and the actual jamming and failure patterns of different folding and mating parts. By reading the target sales region and folding mechanism configuration, a list of folding and mating parts and a standard opening and closing cycle sequence are constructed. Combined with historical environmental exposure data, an environmental exposure time sequence record is generated. Opening and closing cycle jamming events are extracted from the maintenance database, and a record of cumulative environmental exposure is established. The distribution of cumulative environmental exposure under different folding and mating parts and action phases is fitted to extract the critical value of cumulative environmental exposure. This critical value is then used as a weathering constraint benchmark to generate corresponding weathering quality control specifications for sunshade curtain accessories. This achieves a reverse mapping from after-sales failure data to production quality standards, improving the reliability of quality control for sunshade curtain accessories.

Description

Technical Field

[0001] This invention relates to the field of production quality control technology, and more specifically, to a method for production quality control of sunshade accessories. Background Technology

[0002] During long-term use, sunshade curtains require frequent mechanical movements such as unfolding, retracting, and folding. The internal guide rails, sliders, pivots, hinges, and connecting fasteners, among other folding components, continuously endure reciprocating friction and force transmission. Significantly different environmental conditions exist between sales regions. For example, coastal areas experience high humidity and salt spray, industrial areas have high dust accumulation, and northern regions face seasonal dust storms and drastic temperature and humidity fluctuations. These factors cause the sunshade curtain folding mechanism to be affected by varying degrees of dust accumulation, moisture absorption and expansion, particle wear, and increased frictional resistance during actual service. This can lead to problems such as difficulty in opening and closing, partial jamming, and even mechanism failure.

[0003] In the current production process of sunshade curtain accessories, quality control mainly relies on unified material standards, durability test standards, and general life test results to formulate production and inspection requirements. This often lacks specific analysis of the environmental characteristics of different sales regions and the actual failure patterns of different folding and mating parts. Furthermore, the large amount of data on opening and closing jamming faults accumulated during after-sales maintenance is usually only used for fault handling and maintenance statistics, failing to be effectively applied back to the production quality standard formulation stage. This results in a discrepancy between the weather resistance test indicators set at the production end and the actual usage environment, making it difficult to accurately reflect the failure risk of different folding and mating parts under real environmental exposure conditions. Consequently, it affects the opening and closing reliability and operational stability of sunshade curtain products during long-term operation in different regions. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a production quality control method for sunshade accessories to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for quality control in the production of sunshade curtain accessories includes the following steps: S1. Read the target sales region and folding mechanism configuration of the production batch of sunshade accessories, and retrieve the list of folding mating parts and standard opening and closing cycle sequence of the folding mechanism configuration. S2. Obtain environmental exposure data of the target sales region in historical time periods and generate environmental exposure time-series records characterizing the effects of dust accumulation and humidity. S3. Extract maintenance records of the same folding configuration within the target region from the maintenance database, extract the jamming location of the opening and closing failure, the action phase of the jamming location in the opening and closing cycle, the time of failure occurrence and the time of being put into use, and form a set of jamming events in the opening and closing cycle. S4. For the opening and closing cycle jamming event, based on the time of commissioning and the time of failure, extract the cumulative environmental exposure amount for the corresponding period from the environmental exposure time sequence record and establish a location-level cumulative environmental exposure amount record. S5. Group each part according to the list of folding and mating parts, and combine the action phase interval in the standard opening and closing cycle sequence to perform distribution fitting on the part-level environmental cumulative exposure record, and extract the environmental cumulative exposure threshold value for each folding and mating part to cause jamming under different environmental exposure conditions. S6. Use the cumulative environmental exposure threshold of each folding and mating part as the weathering constraint benchmark to generate the corresponding weathering quality control specifications for sunshade accessories.

[0007] As a further aspect of the present invention, in S1, the list of folding mating parts and the standard opening and closing cycle sequence of the folding mechanism configuration specifically include: Based on the folding mechanism configuration, the assembly structure tree set in the sunshade production line is retrieved, and the names of all mating parts that constitute the folding motion and the kinematic pair connection relationships between each part are extracted to form a list of folding mating parts. With the sunshade curtain fully retracted as the zero point of the stroke, the movement is advanced along the opening and closing direction. The opening and closing stroke positions of each cooperating part when it begins to participate in the force transmission motion and when it exits the force transmission motion are recorded one by one. The opening and closing stroke positions are mapped to the relative position intervals in the full opening and closing stroke to obtain the action phase intervals of each cooperating part, which are then combined into a standard opening and closing cycle sequence.

[0008] As a further aspect of the present invention, in S2, the environmental exposure time sequence recording specifically includes: Obtain environmental monitoring data for the target sales region, including historical daily atmospheric dustfall monitoring values ​​and daily relative humidity monitoring values; The daily atmospheric dustfall monitoring value is correlated and corrected with the average number of opening and closing times per unit time in the corresponding quarter to obtain the dust accumulation component. The number of consecutive hours exceeding the moisture absorption critical humidity of the accessory material is extracted from the daily relative humidity monitoring value, and the number of consecutive hours is used as the humidity component. The dust accumulation component and the humidity component are mapped to percentile levels in historical statistical distributions and then combined to obtain the daily environmental exposure index, which is then arranged in chronological order to generate a time series record of environmental exposure.

[0009] As a further aspect of the present invention, the opening and closing cycle jamming event set in S3 specifically includes: Using the folding mechanism configuration and target sales region as filtering criteria, repair work orders are extracted from the maintenance database, and work orders marked with the fault type of "opening and closing jamming" are selected. Read the opening and closing stroke position of the sunshade when the jamming fault occurred from the selected work order, and match the opening and closing stroke position with the action phase interval of each cooperating part according to the standard opening and closing cycle sequence to determine the action phase of the jamming position when the jamming occurred. The product's manufacturing date is traced from the product serial number recorded in the work order as the time of commissioning, and the work order entry date is taken as the time of failure. Combined with the action phase of the jammed position in the opening and closing cycle, an opening and closing cycle jamming event set is formed.

[0010] As a further aspect of the present invention, in step S4, establishing a site-level cumulative environmental exposure record specifically includes: For each event in the set of opening and closing cycle jamming events, the corresponding running time interval of the event is defined from the environmental exposure time sequence record, with the time of the event being put into use as the starting point and the time of the failure as the ending point. Extract the daily environmental exposure index within the operating time interval, identify the continuous date intervals where the environmental exposure index exceeds the preset exposure judgment value as continuous exposure segments, and count the number of consecutive days corresponding to each continuous exposure segment and the sum of the daily environmental exposure index within the continuous exposure segment; The duration of the continuous exposure segment is used as the continuous exposure enhancement factor. The product of the sum of the daily environmental exposure indices within the continuous exposure segment and the continuous exposure enhancement factor is used as the segment exposure amount of the corresponding continuous exposure segment. The segment exposure amounts corresponding to all continuous exposure segments within the running time interval are summed to obtain the cumulative environmental exposure amount corresponding to the stuck event. The action phase and cumulative environmental exposure amount corresponding to the stuck event are associated to form an event-level exposure record. All event-level exposure records are then aggregated according to the action phase to generate a location-level cumulative environmental exposure record.

[0011] As a further aspect of the present invention, S5, specifically includes performing distribution fitting on the location-level cumulative environmental exposure records, including: Based on the list of folded and coordinated parts, the cumulative environmental exposure records at the part level are divided into part-level exposure sample groups. For each part-level exposure sample group, samples with the same action phase interval are extracted to form a phase-grouped sample subgroup. For each phase, a sample subgroup is assigned. The cumulative environmental exposure is plotted on the horizontal axis, and the proportion of jamming in the sample subgroup is plotted on the vertical axis. The exposure-jamming ratio curves of each contact site in the specified action phase interval are fitted. On the exposure-trauma ratio curve, calculate the growth rate between the proportions of trauma occurrence corresponding to adjacent exposure intervals, and divide the growth rate by the difference between the center values ​​of the corresponding exposure intervals to obtain the trauma risk growth rate corresponding to each exposure interval. Identify the exposure range with the highest rate of increase in risk of jamming, and read the cumulative environmental exposure corresponding to the exposure range as the critical value of cumulative environmental exposure for the corresponding contact site in the corresponding action phase range.

[0012] As a further aspect of the present invention, the jamming occurrence ratio specifically includes: Samples of sold sunshade products were extracted from the after-sales records of products with the same folding mechanism configuration in the target sales region. The cumulative environmental exposure was calculated based on the environmental exposure time series records between the product's usage time and the statistical time point. The ratio of the number of samples assigned to each phase to the number of corresponding sold sunshade product samples is calculated based on the same exposure range and used as the stagnation rate.

[0013] As a further aspect of the present invention, in step S6, generating the corresponding weather resistance quality control specifications for sunshade curtain accessories specifically includes: For each folding mating part, the cumulative environmental exposure threshold value of the corresponding total action phase interval is read, and the minimum cumulative environmental exposure threshold value is determined as the weather resistance constraint benchmark value of the corresponding folding mating part. Compare the weather resistance constraint benchmark values ​​of each folding mating part, and set the weather resistance sensitivity level of the corresponding folding mating part according to the weather resistance constraint benchmark value from small to large; Based on the weather sensitivity level, determine the corresponding weather resistance requirements for the folding mating parts during factory inspection, map the folding mating parts to specific sunshade accessories, and generate weather resistance quality control specifications.

[0014] The technical effects and advantages of the production quality control method for sunshade curtain accessories of the present invention are as follows: This invention establishes a correlation analysis mechanism between target sales region environmental exposure data, folding mechanism action sequence information, and after-sales maintenance jamming fault data. It establishes a correspondence between the dust accumulation and humidity effects experienced by sunshade accessories during actual service and the risk of opening and closing jamming of specific folding parts, thus realizing a reverse mapping from after-sales fault information to production quality control standards.

[0015] By extracting the environmental cumulative exposure thresholds corresponding to different folding and mating parts under different action phases, the sensitivity of each folding and mating part to environmental factors and its failure inflection point characteristics can be identified. This avoids the waste of inspection resources or quality requirement mismatch caused by using a uniform weathering standard to control the quality of all components. Simultaneously, this invention utilizes the risk growth relationship between environmental cumulative exposure and the proportion of jamming to determine weathering constraint benchmark values. This ensures that the weathering cycle requirements, damp heat exposure requirements, and dust accumulation exposure requirements set by the production end are consistent with the failure patterns in the actual use environment, improving the pertinence and rationality of weathering quality control specifications. By mapping different folding and mating parts to specific sunshade accessories and generating part-level weathering quality control specifications, the opening and closing reliability, operational stability, and quality consistency of sunshade products during long-term use in different sales regions can be improved, enhancing the matching degree between production quality control and actual market usage scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a production quality control method for a sunshade curtain accessory according to the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Figure 1 This invention provides a method for quality control in the production of sunshade curtain accessories, which includes the following steps: S1. Read the target sales region and folding mechanism configuration of the production batch of sunshade accessories, and retrieve the list of folding mating parts and standard opening and closing cycle sequence of the folding mechanism configuration. S2. Obtain environmental exposure data of the target sales region in historical time periods and generate environmental exposure time-series records characterizing the effects of dust accumulation and humidity. S3. Extract maintenance records of the same folding configuration within the target region from the maintenance database, extract the jamming location of the opening and closing failure, the action phase of the jamming location in the opening and closing cycle, the time of failure occurrence and the time of being put into use, and form a set of jamming events in the opening and closing cycle. S4. For the opening and closing cycle jamming event, based on the time of commissioning and the time of failure, extract the cumulative environmental exposure amount for the corresponding period from the environmental exposure time sequence record and establish a location-level cumulative environmental exposure amount record. S5. Group each part according to the list of folding and mating parts, and combine the action phase interval in the standard opening and closing cycle sequence to perform distribution fitting on the part-level environmental cumulative exposure record, and extract the environmental cumulative exposure threshold value for each folding and mating part to cause jamming under different environmental exposure conditions. S6. Use the cumulative environmental exposure threshold of each folding and mating part as the weathering constraint benchmark to generate the corresponding weathering quality control specifications for sunshade accessories.

[0019] In S1, there is a list of folding mating parts of the folding mechanism configuration and a standard opening and closing cycle sequence.

[0020] When retrieving the assembly structure tree set in the sunshade production line based on the folding mechanism configuration, the folding mechanism configuration file corresponding to the current production batch is read. The assembly structure tree records the assembly position, connection method, and motion relationship of each component in the sunshade folding mechanism using a hierarchical assembly relationship. Each node corresponds to a physical component, and each connecting edge corresponds to an actual assembly connection relationship. During the retrieval process, the process first traverses downwards from the sunshade assembly node, identifying all mechanism units involved in the folding and opening motion, and excluding fixed mounting brackets, outer shell decorative parts, and fasteners that do not participate in motion transmission. Then, the motion pair connection relationship is extracted based on the connection form between each component, such as a rotating joint between a shaft and a connecting rod, a sliding joint between a slider and a guide rail, and a hinged joint between a connecting arm and a support rod, etc., and a complete folding motion path is established according to the motion chain transmission direction. For cases where there is a left-right symmetrical structure in the same folding mechanism, the corresponding information of the left and right sides is retained to avoid inaccurate correspondence of fault locations in subsequent maintenance records. After completing the traversal, a list of folding mating parts is generated. This list includes at least the name of the mating part, its corresponding mechanism level, the type of motion pair, and information on adjacent connecting parts. In this embodiment, after searching, a honeycomb curtain folding mechanism obtains multiple folding mating parts, including the left guide rail slider pair, the right guide rail slider pair, the middle connecting hinge, the secondary support connecting rod shaft, and the bottom beam drive connector, and establishes a corresponding kinematic pair connection relationship table. To ensure the consistency between subsequent maintenance data and production data, each folding mating part is simultaneously assigned a unified part identifier, and common fault descriptions appearing in historical maintenance work orders are mapped to the corresponding part identifiers.

[0021] A displacement acquisition device was installed at the prototype testing station, and the sunshade was driven to gradually move from a fully retracted state to a fully extended state according to the standard opening and closing speed. During the test, the displacement of the bottom beam was recorded at fixed sampling intervals, and the actual motion state of the corresponding kinematic pairs of each folding mating part was recorded simultaneously. In this embodiment, the moment when the relative displacement of the kinematic pair first changes is defined as entering the motion state, and the moment when the relative displacement of the kinematic pair stops changing and remains stable is defined as exiting the motion state. For example, if the guide rail slider changes displacement immediately after the bottom beam begins to move downward, then its stroke position corresponding to entering the motion state is close to the starting position; if a certain limiting connector only contacts and transmits force at the end of the extension, then its stroke position corresponding to entering the motion state is close to the end position of the extension. After recording the actual opening and closing stroke values ​​corresponding to each kinematic pair entering and exiting the motion state, the complete opening and closing stroke length is used as a unified normalization benchmark. For example, when the total stroke length is 2000 mm when fully extended, if a certain guide rail slider enters the motion state at the 100 mm position and exits the motion state at the 1900 mm position, then the corresponding action range is mapped to a relative position range of 0.05 to 0.95. After processing all folding and mating parts in the same way, a set of motion phase intervals covering the entire opening and closing process is obtained. Then, each motion phase interval is sorted according to the order of the opening and closing stroke, and a standard opening and closing cycle timing table is established. In the standard opening and closing cycle timing table, each motion phase records the corresponding folding and mating part, the motion start interval, the motion end interval, and the corresponding kinematic pair type information.

[0022] In S2, the environmental exposure time sequence is recorded.

[0023] When acquiring environmental monitoring data for the target sales region, data from environmental monitoring stations within the corresponding administrative region that have been operating continuously for no less than five years are selected as the data source. The collected data includes daily atmospheric dustfall monitoring values ​​and daily relative humidity monitoring values. For sales regions with multiple monitoring stations, data is aggregated and statistically analyzed according to the geographical correspondence between each station and the actual sales coverage area. Records of equipment failure, monitoring interruptions, and abnormal jumps are removed to form a continuous environmental data sequence. After acquiring the environmental data, the daily atmospheric dustfall monitoring values ​​are corrected for opening and closing frequency. Because the actual number of opening and closing movements experienced by the sunshade folding mechanism varies under the same dustfall conditions, the dust contact opportunities and particle entrainment frequency on its mating surfaces differ. Therefore, it is necessary to introduce the actual usage frequency for correlation correction. Specifically, historical usage survey data and after-sales maintenance records of similar sunshades within the target sales region are retrieved, and the average number of opening and closing times per unit time for each quarter is calculated. For example, the average daily opening and closing frequency is 8 times in spring, 11 times in summer, 7 times in autumn, and 5 times in winter. Subsequently, the long-term average of the total number of opening and closing operations across all quarters was calculated. The average number of opening and closing operations for each quarter was compared with the long-term average to obtain a quarterly opening and closing frequency correction coefficient. When the average number of opening and closing operations in a given quarter is higher than the long-term average, it indicates an increase in the number of times the folding mechanism surface comes into contact with suspended particles in the air. Therefore, the daily atmospheric dustfall monitoring value is amplified and corrected according to the corresponding correction coefficient. When the average number of opening and closing operations in a given quarter is lower than the long-term average, it is reduced and corrected according to the corresponding correction coefficient. The corrected result is used as the dust accumulation component. For obtaining the humidity component, the critical humidity for moisture absorption of the component materials is first determined based on the component material specifications and historical moisture absorption test data. For example, for commonly used engineering plastic slider materials, the critical humidity for moisture absorption is set to 75% relative humidity; for fiber-reinforced material connectors, the critical humidity for moisture absorption is set to 70% relative humidity. Then, the hourly monitoring records corresponding to the daily relative humidity monitoring values ​​are read. The 24-hour data is traversed hourly to identify time periods continuously exceeding the critical humidity for moisture absorption, and the cumulative duration is calculated. For example, if the humidity exceeds the critical humidity for a total of 9 hours on a certain day, the humidity effect component for that day is recorded as 9; if it exceeds the critical humidity for a total of 6 hours on another day, the corresponding humidity effect component is recorded as 6. If there are multiple periods of exceeding the limit on the same day, the duration of all periods of exceeding the limit is added together to obtain the final humidity effect component.

[0024] After extracting the dust and humidity components, a unified level mapping process is performed on both types of components. Since the dust and humidity components have different sources and dimensions, direct superposition cannot accurately reflect the degree of environmental exposure. Therefore, historical statistical distribution percentile levels are used for standardization. Specifically, historical data from the target sales region over the past five years are used as statistical samples to establish historical distribution sequences for both dust and humidity components. The historical samples are then sorted according to their numerical values, and the cumulative position of each historical sample in its corresponding distribution is calculated. For example, if the dust component on a given day exceeds 80% of the historical records, the corresponding dust percentile level is recorded as 80; if the humidity component on a given day exceeds 65% of the historical records, the corresponding humidity percentile level is recorded as 65. The same method is used to calculate the two percentile levels for all dates. After level mapping, the dust and humidity percentile levels for the same date are combined. This embodiment employs a weighted combination method, with weights comprehensively set based on the regional characteristics of the sales area. For example, sandy areas are given a higher weight for the dust accumulation component, while coastal areas are given a higher weight for the humidity component. By default, the arithmetic mean of the two weighted calculations is used as the environmental exposure index for the day. After combining using percentile levels, environmental factors of different dimensions are uniformly converted to the same evaluation scale, preventing any one environmental factor from dominating the evaluation result due to its large original numerical range. After calculating the environmental exposure index for all dates, the results are arranged in chronological order to form a continuous environmental exposure time series record. The environmental exposure time series record stores information such as date, dust accumulation component, humidity component, dust accumulation percentile level, humidity percentile level, and the final environmental exposure index, and maintains consistency with the timeline of subsequent maintenance events, thereby ensuring that the environmental exposure records for the corresponding operating period can be accurately extracted during the subsequent statistical analysis of cumulative environmental exposure.

[0025] In S3, there is a set of opening and closing loop jamming events.

[0026] The system retrieves all repair records corresponding to the target sales region from the after-sales service database and filters out repair work orders for products with the same folding mechanism configuration as the current production batch based on product model, folding mechanism configuration code, and sales flow records. To avoid mixing fault mechanisms between different structures of sunshades, the folding mechanism configuration must be completely consistent during the filtering process, including the guide rail type, connecting arm structure, drive method, and folding kinematic chain structure. After filtering, the system further extracts the fault category field from the repair records. Repair work orders marked with fault categories such as opening / closing jamming, unfolding obstruction, retraction obstruction, partial movement stagnation, and abnormal drive pulling are included in the analysis scope. Repair work orders that are not directly related to the folding mechanism's mating pairs, such as fabric damage, drive motor failure, installation misalignment, and external force damage, are eliminated. Since repair personnel usually do not directly record the opening / closing stroke position in precise percentage form during actual repairs, this embodiment adopts a unified fault stage recording mechanism in the repair work order entry stage. When maintenance personnel are repairing on-site, they select the corresponding stage label based on the location of the jamming, such as standard fault stage codes like "Initial Closure," "Middle Closure," "Final Closure," "Initial Deployment," "Middle Deployment," and "Final Deployment." A mapping relationship between fault stage codes and opening / closing stroke ranges is pre-established in the after-sales database. For example, the initial deployment stage corresponds to 5% to 20% of the opening / closing stroke, the middle deployment stage to 20% to 80%, and the final deployment stage to 80% to 100%. When reading a work order, the corresponding opening / closing stroke position range is automatically converted based on the fault stage code, and the center value of the range is used as the standardized opening / closing stroke position. After completing the opening / closing stroke position conversion, the corresponding action phase range for each folding mating part in the aforementioned standard opening / closing cycle sequence is read. For example, the action phase range for a certain guide rail slider is 0.05 to 0.95, and the action phase range for a certain limit connector is 0.85 to 1.00. When the opening / closing stroke position corresponding to a work order falls within multiple action phase intervals, the fault location description field in the maintenance record is read first, such as "left guide rail jammed" or "middle connecting part blocked," to determine the corresponding folding mating part. Then, the corresponding action phase interval for that mating part is matched from the standard opening / closing cycle sequence. When the work order only records the fault stage without specifying the fault location, the fault location is determined based on the replacement parts information in the maintenance replacement record, maintenance material requisition record, and maintenance completion instructions. After completing the above processing, a fault record containing the fault location, standardized opening / closing stroke position, and corresponding action phase interval is obtained, achieving a unified mapping between maintenance work orders and the folding motion process.

[0027] Product identification information is retrieved from the product serial number recorded in the work order, and the corresponding product's factory record is retrieved from the production archive. Since some sales areas cannot guarantee complete installation time records, this embodiment uniformly uses the factory date as the time of commissioning. When installation registration information exists, the installation date is also recorded as auxiliary verification information, and the interval distribution between the installation date and the factory date is statistically analyzed. When the interval exceeds the preset registration validity period, the factory date is used as the time of commissioning; when the interval is within the normal sales cycle, the factory date is still uniformly used as the event time starting point, thus ensuring that all samples use the same time caliber. Subsequently, the work order entry date is read as the fault occurrence time. The reason for using the work order entry date instead of the repair completion date is that the work order entry time corresponds to the user's first repair report time, which can more accurately reflect the actual time of fault occurrence. For cases where the same product is repeatedly reported for repair within a short period, aggregation is first performed according to the product serial number, and the time interval between two adjacent repair reports is statistically analyzed. When the time interval is less than the set repeated repair identification period, it is judged as a repeated repair record of the same fault event, and only the first repair record is retained; when the time interval exceeds the set period, it is considered a new fault event. The duplicate repair identification cycle is determined based on historical maintenance record statistics. For example, the distribution of time from repair completion to re-reporting in all maintenance events is analyzed, and the time length covering 90% of duplicate repair samples is used as the duplicate repair identification cycle. After processing the time information, the fault location, action phase interval, time of commissioning, time of fault occurrence, and corresponding product serial number are associated and encapsulated. Each record corresponds to a real opening / closing jamming event and retains information such as fault location, action stage, and service time. Subsequently, all maintenance work orders are traversed and summarized into a set of opening / closing cyclic jamming events according to a unified format.

[0028] In S4, a site-level record of cumulative environmental exposure is established.

[0029] The operating time interval begins with the date of commissioning and ends with the date of failure. The environmental exposure index is extracted daily within the interval. Since the environmental exposure index already reflects both dust accumulation and humidity, this step does not process these two environmental factors separately, but directly performs statistical analysis on the overall exposure status. After extracting the environmental exposure index, it is necessary to identify the continuous exposure processes that could potentially cause accumulated environmental damage to the folded joints. To avoid interference from occasional daily environmental fluctuations, this embodiment uses an exposure threshold to filter the environmental exposure index. The exposure threshold is not arbitrarily specified but determined based on the statistical results of all environmental exposure index samples from the target sales region over the past five years. Specifically, the 75th percentile of the historical environmental exposure index distribution is used as the exposure threshold. Then, all environmental exposure indices within the operating time interval are traversed in chronological order. When the environmental exposure index for multiple consecutive days is greater than or equal to the exposure threshold, this consecutive set of dates is identified as a continuous exposure segment. When a date appears below the exposure threshold, the continuous exposure segment is considered terminated, and the identification of the next continuous exposure segment begins anew. For each continuous exposure segment, the number of calendar days between the start and end dates is counted as the duration. Simultaneously, the environmental exposure indices for all dates within the continuous exposure segment are summed to obtain the cumulative exposure intensity value for that segment. The reason for using the continuous exposure segment method instead of directly calculating all environmental exposure indices is that dust accumulation, moisture adsorption, and particle aggregation at the folding joints of the sunshade curtain all exhibit continuous accumulation characteristics. When environmental exposure is interrupted, some adsorbed moisture evaporates, and some adsorbed particles detach, thus weakening the damage accumulation process. Therefore, continuous exposure better reflects the actual jamming process compared to discrete exposure.

[0030] The duration of all continuous exposure periods in the target sales region over the past five years was statistically recorded, and the median duration was calculated. For example, if the median duration of historical continuous exposure periods in the target sales region is 4 days, then 4 days is used as the regional continuous exposure baseline period. For the current continuous exposure period, its duration in days is divided by the corresponding regional continuous exposure baseline period to obtain the continuous exposure enhancement factor. For example, if a continuous exposure period lasts for 8 days, the continuous exposure enhancement factor is 2; if another continuous exposure period lasts for 2 days, the continuous exposure enhancement factor is 0.5. The reason for using this method is that when the duration exceeds the local common continuous exposure cycle, it means that dust and moisture are continuously acting on the folded mating parts, adhering particles are constantly accumulating and maintaining a hygroscopic state, and the friction interfaces in the guide rail, slider, and hinge pair are in a polluted and hygroscopic environment for a long time, significantly increasing the risk of jamming. When the duration is shorter than the local common continuous exposure cycle, the environmental effects have not yet accumulated sufficiently, and their contribution to jamming is relatively limited. Therefore, comparing the duration with the local historical continuous exposure characteristics can reflect the degree of abnormality of the continuous exposure process relative to the local environmental background. The continuous exposure enhancement factor is then multiplied by the cumulative exposure intensity of the corresponding continuous exposure segment to obtain the segment exposure amount for that continuous exposure segment. After calculating all continuous exposure segments, the segment exposure amounts of all continuous exposure segments within the same running time interval corresponding to the jamming event are summed to obtain the cumulative environmental exposure amount corresponding to that jamming event. Next, the action phase information corresponding to the jamming event is read, and the action phase, cumulative environmental exposure amount, failure occurrence time, and corresponding product identifier are associated to form an event-level exposure record. After traversing all jamming events, they are categorized according to the action phase, such as the initial unfolding stage, the middle unfolding stage, the final unfolding stage, the initial folding stage, the middle folding stage, and the final folding stage, each forming an independent record set, and retaining the corresponding folding and mating part information within each action phase set. Finally, a part-level cumulative environmental exposure amount record containing the action phase, the folding and mating part, and the cumulative environmental exposure amount is obtained, enabling independent analysis of the environmental failure characteristics of different folding and mating parts at different action stages during subsequent statistical processes.

[0031] In S5, the distribution of the cumulative environmental exposure records at the location level is fitted.

[0032] Information on folding and mating parts recorded in the cumulative environmental exposure records at the part level is retrieved, and different folding and mating parts, such as guide rail slider pairs, connecting hinges, secondary support connecting rod shafts, and bottom beam connectors, are divided into independent sample groups. Since the stress state and motion mode of the same folding and mating part differ at different opening and closing stages, the sample groups at the part level are further subdivided according to the action phase interval. For example, if the sample group corresponding to the guide rail slider pair includes samples corresponding to the initial unfolding stage, the middle unfolding stage, the final unfolding stage, and the closing stage, samples with consistent action phase intervals are extracted to form a phase-grouped sample group. After classifying the fault samples, after-sales records of products with the same folding mechanism configuration within the target sales region are further extracted. These after-sales records include not only product records of products that have experienced jamming failures but also records of products that have been sold and are continuously operating without jamming failures. For each sold product, the product manufacturing date and statistical time date are retrieved, and the corresponding cumulative environmental exposure is recalculated using the same environmental exposure calculation method as the fault samples. To ensure comparability between faulty and normal samples, all cumulative environmental exposure values ​​were obtained using the same environmental exposure index source, the same continuous exposure segment identification rules, and the same continuous exposure enhancement factor calculation rules. The cumulative environmental exposure values ​​were then divided into intervals. This embodiment uses an equal-width interval division method, based on the distribution range of all cumulative environmental exposure value samples in the target sales region. For example, if the statistically obtained cumulative environmental exposure value range is 0 to 1200, then multiple continuous exposure value intervals are formed with an interval width of 100, such as 0 to 100, 100 to 200, and 200 to 300. After division, the number of faulty samples in the corresponding exposure value interval for each phase-assigned sample subgroup is counted, along with the number of samples from all sold sunshade products within the same exposure value interval. The jamming occurrence rate within the corresponding exposure value interval is then obtained by dividing the number of faulty samples by the number of sold product samples within that interval. For example, if there are 20 faulty samples within the exposure range of 300 to 400 during a certain action phase, and 500 sold product samples within the same range, the corresponding jamming rate is recorded as 4%. After completing the statistics for all exposure ranges in the same way, the correspondence between the cumulative environmental exposure and the jamming rate under the same action phase is obtained. The reason for using sold product samples as the denominator instead of only using non-faulty samples is that sold product samples can truly reflect the total number of products actually exposed to the corresponding environmental conditions in the market, thus ensuring that the calculation results reflect the true probability level of fault occurrence.

[0033] Using the center value of each exposure interval as the x-axis and the statistically obtained jamming occurrence rate under the corresponding exposure interval as the y-axis, a discrete statistical point set is formed in ascending order of exposure. Since the failure rate corresponding to different exposure intervals in actual maintenance samples is affected by fluctuations in the sample size, directly using the original statistical points can easily lead to local abnormal fluctuations. This embodiment uses a monotonic smooth fitting method to establish the exposure-jamming ratio relationship curve. During the fitting process, it is required that as the cumulative environmental exposure increases, the jamming occurrence rate maintains a non-decreasing trend, thus conforming to the actual mechanism that the continuous accumulation of dust and humidity leads to a continuous increase in jamming risk. After completing the relationship curve construction, the growth rate between the jamming occurrence rates of adjacent exposure intervals is calculated sequentially according to the exposure interval order. For example, if the jamming occurrence rate of a certain interval is 3%, and the jamming occurrence rate of the next adjacent interval is 5%, then the growth rate is 2 percentage points. Then, the difference between the center values ​​of the two intervals is read, and the growth rate is divided by the difference in the corresponding center values ​​to obtain the jamming risk growth rate corresponding to that interval. After calculating the risk growth rate corresponding to all exposure intervals in the same way, all growth rates are compared and analyzed. When the growth rate of an exposure interval is significantly higher than that of its immediate neighbors, it indicates that the cumulative environmental exposure within that interval has reached a turning point leading to a rapid increase in the risk of jamming. During the actual operation of the sunshade, dust particles accumulate and absorb moisture over a long period, gradually forming a particle agglomeration layer and an adhesion layer. Frictional resistance does not increase linearly, but rather deteriorates rapidly after reaching a certain level of accumulation. Therefore, this embodiment considers the exposure interval with the highest risk growth rate as the interval where the jamming risk accelerates, and reads the cumulative environmental exposure corresponding to the center value of this exposure interval as the critical value for cumulative environmental exposure. For example, if the exposure range corresponding to the interval with the highest risk growth rate is 500 to 600, then the center value of 550 is read as the critical value for cumulative environmental exposure of the corresponding folding and mating parts under that action phase. After completing the statistics for all folding and mating parts and all action phases, a set of critical value records containing folding and mating parts, action phases, and the critical value for cumulative environmental exposure is formed.

[0034] In step S6, the corresponding weather resistance quality control specifications for sunshade curtain accessories are generated.

[0035] The system reads all critical value records for each action phase corresponding to a specific folding mating part. For example, it records the cumulative environmental exposure critical values ​​for multiple action phases of a guide rail slider pair, including the initial unfolding stage, middle unfolding stage, final unfolding stage, initial folding stage, and final folding stage. Since the stress state, contact pressure, and movement trajectory of the same folding mating part differ at different action stages, its corresponding environmental failure threshold varies. Therefore, it is necessary to extract the position representing the most unfavorable working condition for that part from the results of multiple action phases. In this embodiment, the minimum cumulative environmental exposure critical value is used as the weathering constraint benchmark value. Its engineering significance lies in the fact that when a folding mating part reaches the point of rapid increase in jamming risk first in one of the multiple action stages, that stage determines the upper limit of environmental exposure that the part can actually withstand. For example, if the cumulative environmental exposure critical value for a guide rail slider pair is 520 in the initial unfolding stage, 610 in the middle unfolding stage, and 480 in the final unfolding stage, it indicates that the final unfolding stage is the first to enter the rapid increase range of jamming risk. In actual use, regardless of whether other action stages are still within the safe range, as long as the final unfolding stage reaches the corresponding exposure level first, the guide rail slider pair may experience jamming failure. Therefore, 480 is used as the weathering constraint benchmark value for this guide rail slider pair. The reason for using the minimum environmental cumulative exposure threshold value instead of the average value is that the average value would mask local weak points, causing production quality requirements to be diluted by higher threshold values, and failing to reflect the actual earliest failure location. After completing the calculations for all folding mating parts, the set of weathering constraint benchmark values ​​for parts such as the guide rail slider pair, connecting hinge, secondary support connecting rod shaft, and bottom beam connector is obtained. Subsequently, all weathering constraint benchmark values ​​are sorted. During the sorting process, the values ​​are arranged from smallest to largest. The smaller the value, the faster the jamming risk increases under low environmental cumulative exposure conditions, indicating that it is more sensitive to dust and humidity accumulation; the larger the value, the longer the environmental accumulation period is required to enter the rapid risk growth stage. After sorting, all weathering constraint benchmark values ​​are divided into different sensitivity level intervals. The historical sample distribution quantile interval is used as the basis for level division. For example, by statistically analyzing the distribution of weather resistance constraint benchmark values ​​for all folded mating parts, the 25th, 50th, and 75th percentile values ​​are used as grade boundaries, thus forming four weather resistance sensitivity grade intervals. Folded mating parts falling within the lowest 25th percentile interval are classified into the first weather resistance sensitivity grade, those falling between the 25th and 50th percentile intervals are classified into the second weather resistance sensitivity grade, and so on, completing the grade classification in this manner. Using historical percentile interval classification ensures that a unified statistical standard is used to obtain the weather resistance sensitivity grade under different product structures and sales regions.

[0036] Establish a mapping relationship between folding mating parts and actual production components. For example, the guide rail slider pair is mapped to the slider assembly, guide rail liner, and guide rail surface treatment layer; the connecting hinge is mapped to the hinge assembly, pivot assembly, and bushing assembly; the secondary support connecting rod pivot is mapped to specific production components such as the connecting rod pin and connecting bushing. The mapping relationship comes from the aforementioned assembly structure tree and parts assembly list, with each folding mating part corresponding to a set of actual production components. Subsequently, the factory weathering requirements for the corresponding components are determined based on the weathering sensitivity level. A weathering requirement comparison table is established based on historical reliability verification data. For example, components corresponding to the first weathering sensitivity level must meet the requirements for the longest number of weathering cycles, the longest duration of damp heat exposure, and the maximum dust exposure; the second weathering sensitivity level corresponds to the next lower level of requirements; and the third and fourth weathering sensitivity levels decrease sequentially. The above requirements are derived from the failure statistics of corresponding components under different test conditions in the company's historical weathering test database. For example, if a slider assembly corresponds to the first weathering sensitivity level, the combination of weathering test conditions corresponding to the first level is read, including the number of weathering cycles, damp heat exposure conditions, and dust exposure conditions, and this combination is written into the factory inspection specification of the corresponding slider assembly. When the slider assembly corresponding to a production batch enters the factory inspection stage, inspectors perform the corresponding tests according to the quality control specifications and record the results. For cases where the same folding mating part corresponds to multiple actual production parts, the most stringent weathering requirements are simultaneously issued to all related parts. For example, if a guide rail slider pair corresponds to both a slider assembly and a guide rail liner, both inherit the corresponding weathering requirements for the guide rail slider pair. This ultimately results in a weathering quality control specification table containing the part name, corresponding folding mating part, weathering sensitivity level, weathering cycle requirements, damp heat exposure requirements, and dust accumulation exposure requirements, which is then archived and stored according to production batches. This method achieves a direct mapping between after-sales failure data, environmental exposure statistics, and production-end inspection requirements, enabling failure patterns in the actual market environment to be transformed into specific and executable quality control standards.

[0037] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0038] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0039] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0040] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0041] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0042] In addition, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0043] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0044] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0045] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A production quality control method of a sunshade screen fitting, characterized by, Includes the following steps: S1. Read the target sales region and folding mechanism configuration of the production batch of sunshade accessories, and retrieve the list of folding mating parts and standard opening and closing cycle sequence of the folding mechanism configuration. S2. Obtain environmental exposure data of the target sales region in historical time periods and generate environmental exposure time-series records characterizing the effects of dust accumulation and humidity. S3. Extract maintenance records of the same folding configuration within the target region from the maintenance database, extract the jamming location of the opening and closing failure, the action phase of the jamming location in the opening and closing cycle, the time of failure occurrence and the time of being put into use, and form a set of jamming events in the opening and closing cycle. S4. For the opening and closing cycle jamming event, based on the time of commissioning and the time of failure, extract the cumulative environmental exposure amount for the corresponding period from the environmental exposure time sequence record and establish a location-level cumulative environmental exposure amount record. S5. Group each part according to the list of folding and mating parts, and combine the action phase interval in the standard opening and closing cycle sequence to perform distribution fitting on the part-level environmental cumulative exposure record, and extract the environmental cumulative exposure threshold value for each folding and mating part to cause jamming under different environmental exposure conditions. S6. Use the cumulative environmental exposure threshold of each folding and mating part as the weathering constraint benchmark to generate the corresponding weathering quality control specifications for sunshade accessories.

2. The method for quality control in the production of a sunshade curtain accessory according to claim 1, characterized in that, In S1, the list of folding mating parts and the standard opening and closing cycle sequence of the folding mechanism configuration specifically include: Based on the folding mechanism configuration, the assembly structure tree set in the sunshade production line is retrieved, and the names of all mating parts that constitute the folding motion and the kinematic pair connection relationships between each part are extracted to form a list of folding mating parts. With the sunshade curtain fully retracted as the zero point of the stroke, the movement is advanced along the opening and closing direction. The opening and closing stroke positions of each cooperating part when it begins to participate in the force transmission motion and when it exits the force transmission motion are recorded one by one. The opening and closing stroke positions are mapped to the relative position intervals in the full opening and closing stroke to obtain the action phase intervals of each cooperating part, which are then combined into a standard opening and closing cycle sequence.

3. The method for quality control in the production of a sunshade curtain accessory according to claim 1, characterized in that, In S2, the environmental exposure time series record specifically includes: Obtain environmental monitoring data for the target sales region, including historical daily atmospheric dustfall monitoring values ​​and daily relative humidity monitoring values; The daily atmospheric dustfall monitoring value is correlated and corrected with the average number of opening and closing times per unit time in the corresponding quarter to obtain the dust accumulation component. The number of consecutive hours exceeding the moisture absorption critical humidity of the accessory material is extracted from the daily relative humidity monitoring value, and the number of consecutive hours is used as the humidity component. The dust accumulation component and the humidity component are mapped to percentile levels in historical statistical distributions and then combined to obtain the daily environmental exposure index, which is then arranged in chronological order to generate a time series record of environmental exposure.

4. The method for quality control in the production of a sunshade curtain accessory according to claim 1, characterized in that, The opening and closing loop jamming event set in S3 specifically includes: Using the folding mechanism configuration and target sales region as filtering criteria, repair work orders are extracted from the maintenance database, and work orders marked with the fault type of "opening and closing jamming" are selected. Read the opening and closing stroke position of the sunshade when the jamming fault occurred from the selected work order, and match the opening and closing stroke position with the action phase interval of each cooperating part according to the standard opening and closing cycle sequence to determine the action phase of the jamming position when the jamming occurred. The product's manufacturing date is traced from the product serial number recorded in the work order as the time of commissioning, and the work order entry date is taken as the time of failure. Combined with the action phase of the jammed position in the opening and closing cycle, an opening and closing cycle jamming event set is formed.

5. The method for quality control in the production of a sunshade curtain accessory according to claim 1, characterized in that, In S4, establishing a site-level cumulative environmental exposure record specifically includes: For each event in the set of opening and closing cycle jamming events, the corresponding running time interval of the event is defined from the environmental exposure time sequence record, with the time of the event being put into use as the starting point and the time of the failure as the ending point. Extract the daily environmental exposure index within the operating time interval, identify the continuous date intervals where the environmental exposure index exceeds the preset exposure judgment value as continuous exposure segments, and count the number of consecutive days corresponding to each continuous exposure segment and the sum of the daily environmental exposure index within the continuous exposure segment; The duration of the continuous exposure segment is used as the continuous exposure enhancement factor. The product of the sum of the daily environmental exposure indices within the continuous exposure segment and the continuous exposure enhancement factor is used as the segment exposure amount of the corresponding continuous exposure segment. The segment exposure amounts corresponding to all continuous exposure segments within the running time interval are summed to obtain the cumulative environmental exposure amount corresponding to the stuck event. The action phase and cumulative environmental exposure amount corresponding to the stuck event are associated to form an event-level exposure record. All event-level exposure records are then aggregated according to the action phase to generate a location-level cumulative environmental exposure record.

6. The method for production quality control of a sunshade curtain accessory according to claim 1, characterized in that, In step S5, the distribution fitting of the location-level cumulative environmental exposure records specifically includes: Based on the list of folded and coordinated parts, the cumulative environmental exposure records at the part level are divided into part-level exposure sample groups. For each part-level exposure sample group, samples with the same action phase interval are extracted to form a phase-grouped sample subgroup. For each phase, a sample subgroup is assigned. The cumulative environmental exposure is plotted on the horizontal axis, and the proportion of jamming in the sample subgroup is plotted on the vertical axis. The exposure-jamming ratio curves of each contact site in the specified action phase interval are fitted. On the exposure-trauma ratio curve, calculate the growth rate between the proportions of trauma occurrence corresponding to adjacent exposure intervals, and divide the growth rate by the difference between the center values ​​of the corresponding exposure intervals to obtain the trauma risk growth rate corresponding to each exposure interval. Identify the exposure range with the highest rate of increase in risk of jamming, and read the cumulative environmental exposure corresponding to the exposure range as the critical value of cumulative environmental exposure for the corresponding contact site in the corresponding action phase range.

7. The method for quality control in the production of a sunshade curtain accessory according to claim 6, characterized in that, The specific proportion of jamming occurrences includes: Samples of sold sunshade products were extracted from the after-sales records of products with the same folding mechanism configuration in the target sales region. The cumulative environmental exposure was calculated based on the environmental exposure time series records between the product's usage time and the statistical time point. The ratio of the number of samples assigned to each phase to the number of corresponding sold sunshade product samples is calculated based on the same exposure range and used as the stagnation rate.

8. The method for quality control in the production of a sunshade curtain accessory according to claim 1, characterized in that, In step S6, generating the corresponding weather resistance quality control specifications for sunshade curtain accessories specifically includes: For each folding mating part, the cumulative environmental exposure threshold value of the corresponding total action phase interval is read, and the minimum cumulative environmental exposure threshold value is determined as the weather resistance constraint benchmark value of the corresponding folding mating part. Compare the weather resistance constraint benchmark values ​​of each folding mating part, and set the weather resistance sensitivity level of the corresponding folding mating part according to the weather resistance constraint benchmark value from small to large; Based on the weather sensitivity level, determine the corresponding weather resistance requirements for the folding mating parts during factory inspection, map the folding mating parts to specific sunshade accessories, and generate weather resistance quality control specifications.

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