Method, system and device for detecting chemical fiber roll product based on flexible sampling

Abstract

The present application relates to a detection method, system and device for chemical fiber winding product based on flexible sampling. A winding silk roll to be detected is obtained; the winding silk roll is transported to a weighing external inspection sampling line by using a preset system, various detections are performed on the silk roll according to preset rules; if the silk roll meets the preset rules, the silk roll is temporarily stored in a preset silk car warehouse; the result of preset physical property detection of the winding silk roll meeting the preset rules and temporarily stored in the preset silk car warehouse is obtained, if the winding silk roll meets the preset rules of physical property detection, the winding silk roll is discharged to a packaging line for packaging and stacking; otherwise, the winding silk roll is discharged to a manual offline port and corresponding processing is performed by manual; otherwise, the winding silk roll not meeting the preset rules and related information thereof are fed back to a winding workshop. The problems in the prior art that it is time-consuming and laborious to find a silk roll for sampling in a balancing room, all silks are weighed and appearance inspection is performed on an automatic line, abnormal information feedback is not timely, process cannot be adjusted in time, and the operation efficiency of an automatic packaging line is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of chemical fiber production technology, and in particular to a detection method, system and equipment for chemical fiber packaged products based on flexible sampling. Background Technology

[0002] With the increasing prevalence of automated production, the chemical fiber industry has now achieved automated and intelligent production. After a spindle of yarn is produced from the winding machine, it is automatically wound and suspended onto a yarn cart. Each yarn cart has 24, 48, or 96 suspension positions, and information such as the batch number, shift, and drop number of the yarn cart is linked to the cart. The yarn cart is temporarily stored in the balancing room, during which time the yarn carts are randomly sampled and subjected to physical property testing. Based on the test results, the yarn carts are graded. Yarn carts that meet the packaging grade requirements are transferred to the packaging line, where robots pick up the yarn carts and place them on the automated packaging line. On the automated packaging line, all yarn carts undergo weighing and visual inspection. Yarn carts with abnormal weighing or appearance are rejected and sent to the manual yarn picking port. Yarn carts that pass the weighing and appearance tests are finally packaged (boxed or palletized) and then stored in an automated warehouse in pallet form. Throughout the entire automated process, the information of each yarn spindle can be tracked.

[0003] The production process of chemical fiber spools is roughly as follows: Polyester melt (PTA) is the raw material for the spools. Depending on the process, a spinneret has 48, 96, 192, or 384 holes. The screw extrudes the melt from the spinneret. After cooling, setting, and twisting, the melt forms a filament. This filament is then wound by a winding machine to produce spools of spools, which are the final product sold by chemical fiber companies. A winding machine is also called a spinning station. If a spinning station produces 6 spools of filament, it means there are 6 spinnerets upstream of that station. The 6 spinnerets at a spinning station work simultaneously, meaning the spools of filament are fully wound at the same time. When the full winding time is reached, the winding machine cuts the filament to form a single spool. The 6 spools at a spinning station are recorded with the same roll number. If the full roll time of a certain spinning station is 6 minutes, and a shift is 8 hours, after accumulating the roll numbers, a shift can produce 8*60 / 6=80 rolls of yarn.

[0004] To prevent the spinneret orifices from becoming clogged, the process requires cleaning the spinneret plate on the spinneret every 24 hours, meaning the entire filament will break once. When the equipment is functioning normally, the filament produced by the spinneret will not break within 24 hours, meaning the combined stranding effect of the multiple orifices on a single spinneret will remain unchanged.

[0005] The current system presents the following risks during the spinning process:

[0006] After each cleaning of the spinneret assembly, it is necessary to manually reorganize the multiple strands of filament produced by the spinneret assembly. However, this process is prone to the risk of missorting filaments among multiple spinneret assemblies, which can cause product abnormalities.

[0007] During production, a filament in one of the holes of the spinneret broke, causing the original 48 strands to become only 47. Moreover, this broken filament may combine with the adjacent spinneret to form 49 strands.

[0008] In the existing technology, on the one hand, it is time-consuming and labor-intensive to find and inspect the yarn rolls in the balancing room. Weighing and visually inspecting all yarns on the automatic line affects the operating efficiency of the automatic packaging line. Especially when the packaging output on the automatic packaging line is particularly large, the time spent on weighing is the biggest factor affecting the efficiency of the automated packaging line. On the other hand, there is a certain time lag in weighing and visual inspection on the packaging line. In other words, the abnormal detection results cannot be provided to the spinning workshop quickly. Summary of the Invention

[0009] In view of this, the purpose of the present invention is to provide a detection method, system and equipment for chemical fiber packaged products based on flexible sampling, so as to solve the problems in the prior art. On the one hand, it is time-consuming and labor-intensive to find the yarn rolls for sampling inspection in the balance room. On the other hand, it is time-consuming and labor-intensive to weigh and inspect all yarns on the automatic line, which affects the operating efficiency of the automatic packaging line. On the other hand, weighing and inspecting on the packaging line has a certain time lag, that is, it cannot quickly provide abnormal detection results to the spinning workshop.

[0010] According to a first aspect of the present invention, a method for detecting chemical fiber roll products based on flexible sampling is provided, comprising:

[0011] Obtain the chemical fiber roll to be tested;

[0012] The chemical fiber roll to be tested is transported to the preset weighing and external inspection sampling line using a preset transfer system, and various tests are performed on the chemical fiber roll to be tested according to preset rules.

[0013] If the chemical fiber roll to be tested conforms to the preset rules;

[0014] The chemical fiber roll to be tested is then temporarily stored in a preset yarn storage garage;

[0015] Obtain the results of preset physical property tests on chemical fiber rolls that meet preset rules and are temporarily stored in the preset yarn warehouse. If the chemical fiber rolls meet the preset rules for physical property testing, they are sent out of the warehouse to the packaging line for packaging and stacking.

[0016] Otherwise, the goods will be processed manually at the manual unloading point after leaving the warehouse.

[0017] Otherwise, any non-compliant chemical fiber spools and related information will be fed back to the winding workshop.

[0018] Furthermore, the process involves using a pre-set transfer system to transport the chemical fiber roll to be inspected to a pre-set weighing and external inspection sampling line, and performing various tests on the chemical fiber roll according to pre-set rules, including:

[0019] The chemical fiber roll to be tested is transported to the turntable of the preset weighing and external inspection sampling line using a preset transfer system, and the roll on the yarn cart is picked up by a preset robot and placed onto the roller conveyor of the weighing and external inspection sampling line.

[0020] The yarn rolls are weighed using a preset weighing mode. Yarn rolls that exceed the threshold range set in the background are removed, and the yarn rolls and related information are fed back to the winding workshop.

[0021] The appearance of the silk rolls is inspected using preset appearance inspection rules, and silk rolls whose appearance does not meet the preset rules are rejected.

[0022] Otherwise, for yarn rolls whose weight range meets the threshold set by the backend and whose appearance meets the preset rules, the yarn rolls are periodically sampled using the preset periodic sampling mode and the set sampling rules, and the yarn rolls that meet the set sampling rules are subjected to physical property testing.

[0023] Otherwise, the yarn rolls that do not meet the set sampling rules will be rejected, and the yarn rolls and related information will be fed back to the winding workshop.

[0024] The weighing mode includes:

[0025] All weighing modes, time-sharing weighing mode, periodic weighing mode, and random weighing mode.

[0026] Furthermore, in the aforementioned full weighing mode, the sampled sample is the entire silk roll.

[0027] Furthermore, the time-sharing weighing mode,

[0028] Set the host computer to time-sharing weighing;

[0029] In the time-sharing weighing mode, the sampled samples are all the samples within the weighing time.

[0030] Furthermore, the periodic weighing mode,

[0031] Set the host computer to periodic weighing;

[0032] In the periodic weighing mode, the sampling sample is taken according to the sampling frequency, and only one piece of yarn from the production spinning station is taken each time.

[0033] Furthermore, the random weighing mode,

[0034] Set the host computer to random weighing as preset;

[0035] In the random weighing mode, the sample is taken according to the number of times the wire falls.

[0036] Further, the step of temporarily storing the chemical fiber spool to be tested in a preset warehouse if the spool conforms to a preset rule includes:

[0037] If the chemical fiber roll to be tested conforms to the algorithm of the PLC control system for automatically determining the steady-state range and steady-state value of weighing, then the chemical fiber roll to be tested will be temporarily stored in the preset yarn storage tank.

[0038] Furthermore, the silk rolls that meet the threshold range set by the backend and whose appearance conforms to preset rules are periodically sampled using a preset periodic sampling mode and set sampling rules. Silk rolls that meet the set sampling rules are then subjected to physical property testing, including:

[0039] Determine the periodic sampling time using a pre-set production schedule;

[0040] Using the determined periodic sampling times, the periodic sampling information is sent out;

[0041] The system receives periodic sampling information and uses this information to conduct random inspections on silk rolls that meet the threshold range set by the backend and whose appearance conforms to the preset rules under periodic sampling.

[0042] If the yarn rolls have already been sampled in the current cycle, they will not be sampled again, and the system will automatically close the cycle sampling for that spinning position in the current cycle.

[0043] The silk roll obtained by the periodic sampling at the current moment is a sample prepared for the physical property testing at the next moment.

[0044] According to a second aspect of the present invention, a detection system for chemical fiber packaged products based on flexible sampling is provided, comprising:

[0045] The acquisition module is used to obtain the chemical fiber roll to be inspected;

[0046] The weighing external inspection sampling module is used to transport the chemical fiber roll to be inspected to the preset weighing external inspection sampling line using a preset transfer system, and to perform various tests on the chemical fiber roll to be inspected according to preset rules.

[0047] The yarn processing module, if the chemical fiber spool to be tested conforms to the preset rules;

[0048] The chemical fiber roll to be tested is then temporarily stored in a preset yarn storage garage;

[0049] The automatic packaging module is used to obtain the results of preset physical property tests on chemical fiber rolls that meet preset rules and are temporarily stored in a preset yarn warehouse. If the chemical fiber rolls meet the preset rules for physical property testing, they are sent out of the warehouse to the packaging line for packaging and palletizing.

[0050] Otherwise, the goods will be processed manually at the manual unloading point after leaving the warehouse.

[0051] Otherwise, any non-compliant chemical fiber spools and related information will be fed back to the winding workshop.

[0052] According to a third aspect of the present invention, a testing device for chemical fiber packaged products based on flexible sampling is provided, comprising:

[0053] Memory, on which executable programs are stored;

[0054] A processor for executing the executable program in the memory to implement the steps of any of the methods described above.

[0055] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0056] It is understood that the technical solution provided by this invention involves obtaining a chemical fiber roll to be inspected; using a preset transfer system to transport the chemical fiber roll to be inspected to a preset weighing and external inspection sampling line; and performing various tests on the chemical fiber roll to be inspected according to preset rules. If the chemical fiber roll to be inspected meets the preset rules, it is temporarily stored in a preset yarn warehouse. Compared to the prior art, where the yarn roll can only be weighed and visually inspected at the packaging line, and it takes at least 8 hours to provide feedback on the weighing and visual inspection results to the spinning workshop, the weighing and external inspection sampling line solution provided by this invention can quickly obtain the weight and visual inspection information of the yarn roll within 2 hours after winding is completed, thus solving the problem of... This technology overcomes the lag in existing technologies in this area, allowing workshops to adjust processes earlier based on feedback weight and external inspection information. It solves the problems of existing technologies, such as time-consuming and labor-intensive random checks of yarn rolls in the balancing room, and slow feedback of abnormal information on automated lines, which hinders timely process adjustments and affects the efficiency of automated packaging lines. The new technology obtains the results of preset physical property tests on chemical fiber yarn rolls that meet preset rules and are temporarily stored in a pre-set yarn warehouse. If the yarn rolls meet the preset physical property test rules, they are released to the packaging line for packaging and palletizing; otherwise, they are released to the manual exit point for manual processing. Furthermore, yarn rolls that do not meet the preset rules and their related information are fed back to the winding workshop. Yarn rolls are temporarily stored in the yarn warehouse until their physical property tests are passed before being released to the automated packaging line for packaging and palletizing. If the physical property tests fail, the yarn cart containing the abnormal yarn rolls is directly released from the warehouse, avoiding the hassle of unpacking the yarn rolls after packaging.

[0057] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0058] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0059] Figure 1 This is a schematic diagram of the testing method for chemical fiber roll products based on flexible sampling;

[0060] Figure 2 This is a schematic diagram of the original workshop process design for chemical fiber roll products based on flexible sampling;

[0061] Figure 3 This is a schematic diagram of the original workshop process optimization based on flexible sampling of chemical fiber roll products;

[0062] Figure 4This is a schematic diagram of the components of a testing system for chemical fiber roll products based on flexible sampling;

[0063] Figure 5 This is a schematic diagram of the testing equipment for chemical fiber roll products based on flexible sampling. Detailed Implementation

[0064] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0065] Example 1

[0066] Figure 1 This is a schematic diagram of the testing method for chemical fiber roll products based on flexible sampling. (See attached diagram) Figure 1 The detection method for chemical fiber packaged products based on flexible sampling includes:

[0067] S1. Obtain the chemical fiber roll to be tested;

[0068] S2. Using a preset transfer system, the chemical fiber roll to be tested is transported to a preset weighing and external inspection sampling line, and various tests are performed on the chemical fiber roll to be tested according to preset rules.

[0069] S3. If the chemical fiber roll to be tested conforms to the preset rules;

[0070] S4. The chemical fiber roll to be tested is then temporarily stored in a preset yarn storage tank;

[0071] S5. Obtain the results of preset physical property tests on the chemical fiber rolls that meet the preset rules and are temporarily stored in the preset yarn warehouse. If the chemical fiber rolls meet the preset rules for physical property testing, they are sent out of the warehouse to the packaging line for packaging and stacking.

[0072] S6. Otherwise, the goods will be sent to the manual unloading point for manual processing.

[0073] S7. Otherwise, the chemical fiber spools that do not conform to the preset rules and their related information will be fed back to the winding workshop.

[0074] In one embodiment, as described in steps S1-S2, the specific implementation includes:

[0075] In the automated winding workshop, the fully wound yarn rolls are suspended on yarn carts one by one. The yarn carts are then transported by a transfer system such as AGV (Automated Guided Vehicle) to the turntable of the weighing and external inspection sampling line.

[0076] On the turntable of the weighing and external inspection sampling line, the robot grabs the yarn rolls on the yarn cart and puts them onto the roller conveyor of the weighing and external inspection sampling line. The yarn rolls move one spindle at a time on the roller conveyor of the weighing and external inspection sampling line.

[0077] The yarn rolls are weighed using a preset weighing mode. Yarn rolls that exceed the threshold range set in the background are removed, and the yarn rolls and related information are fed back to the winding workshop.

[0078] The appearance of the silk rolls is inspected using preset appearance inspection rules, and silk rolls whose appearance does not meet the preset rules are rejected.

[0079] Otherwise, for yarn rolls whose weight range meets the threshold set by the backend and whose appearance meets the preset rules, the yarn rolls are periodically sampled using the preset periodic sampling mode and the set sampling rules, and the yarn rolls that meet the set sampling rules are subjected to physical property testing.

[0080] Otherwise, yarn rolls that do not meet the set sampling rules will be rejected, and the yarn rolls and related information will be fed back to the winding workshop; wherein, the weighing mode includes:

[0081] All weighing modes, time-sharing weighing mode, periodic weighing mode, and random weighing mode.

[0082] Furthermore, in the aforementioned full weighing mode, the sampled sample is the entire silk roll.

[0083] Furthermore, the time-sharing weighing mode,

[0084] Set the host computer to time-sharing weighing;

[0085] In the time-sharing weighing mode, the sampled samples are all the samples within the weighing time.

[0086] Furthermore, the periodic weighing mode,

[0087] Set the host computer to periodic weighing;

[0088] In the periodic weighing mode, the sampling sample is taken according to the sampling frequency, and only one piece of yarn from the production spinning station is taken each time.

[0089] Furthermore, the random weighing mode,

[0090] Set the host computer to random weighing as preset;

[0091] In the random weighing mode, the sample is taken according to the number of times the wire falls.

[0092] Further, the step of temporarily storing the chemical fiber spool to be tested in a preset warehouse if the spool conforms to a preset rule includes:

[0093] If the chemical fiber roll to be tested conforms to the algorithm of the PLC control system for automatically determining the steady-state range and steady-state value of weighing, then the chemical fiber roll to be tested will be temporarily stored in the preset yarn storage tank.

[0094] It should be noted that the data of the preset weighing mode will be synchronized to the database. During actual weighing, only those items that meet the requirements of the database records will be weighed, while the rest will not be weighed.

[0095] In practice, the weighing external inspection sampling line roller conveyor transports the yarn rolls with abnormal weight, abnormal appearance, or selected for periodic sampling to the manual yarn picking station, and transports the remaining yarn rolls to the return gripping roller conveyor.

[0096] Information on yarn rolls with abnormalities in weighing and visual inspection is fed back to the winding workshop for staff to analyze.

[0097] The rotary robot retrieves the yarn rolls from the return roller conveyor and transfers them back onto the yarn car.

[0098] The yarn cart is temporarily stored in the yarn warehouse, and the yarn rolls sampled at this spinning station are awaiting the results of the physical property tests.

[0099] Silk rolls that pass the physical property test are sent to the packaging line for packaging and palletizing; silk rolls that fail the physical property test are sent directly to the manual unloading point for manual processing.

[0100] In practice, all are weighed: all silk cakes on the weighing line are marked for weighing in the database, and the weighing process is carried out on all marked silk cakes.

[0101] Time-sharing weighing: Set a weighing time period in the sampling system. All yarn rolls within the weighing time period are marked for weighing in the database. During weighing, a weighing process is performed on all marked yarn rolls.

[0102] Periodic weighing: Sampling is performed according to the sampling frequency (generally every shift), taking only one yarn bobbin from each production spinning station each time. Sampling is done sequentially within each cycle (shift), with the number of bobbins increasing incrementally. When the maximum number of bobbins is reached, the first bobbin is sampled in the next cycle, and this cycle continues. The sampled yarn bobbins are marked for weighing in the database. During weighing, all marked yarn bobbins are weighed simultaneously. Furthermore, weighing is done in groups of 6 spindles, so if any group contains a marked yarn bobbin, the entire group must be weighed. The sample size can be appropriately increased without increasing the weighing time.

[0103] Random weighing: For each silk roll on the weighing line, the sampling system generates a random number representing the position of the silk cart. For each randomly selected position, the corresponding silk roll is marked for weighing in the database. During weighing, all marked silk rolls are weighed simultaneously. Furthermore, weighing is done in groups of six silk spindles, so if any marked silk roll is present in a group, the entire group must be weighed. The sample space can be appropriately expanded without increasing the weighing time. The sampling system can be configured with rules for random number generation, thereby increasing or decreasing the sample space.

[0104] In specific implementation, the silk rolls that meet the threshold range set by the backend and whose appearance conforms to preset rules are periodically sampled using a preset periodic sampling mode and set sampling rules. Silk rolls that meet the set sampling rules are then subjected to physical property testing, including:

[0105] Determine the periodic sampling time using a pre-set production schedule;

[0106] Using the determined periodic sampling times, the periodic sampling information is sent out;

[0107] The system receives periodic sampling information and uses this information to conduct random inspections on silk rolls that meet the threshold range set by the backend and whose appearance conforms to the preset rules under periodic sampling.

[0108] If the yarn rolls have already been sampled in the current cycle, they will not be sampled again, and the system will automatically close the cycle sampling for that spinning position in the current cycle.

[0109] The silk roll obtained by the periodic sampling at the current moment is a sample prepared for the physical property testing at the next moment.

[0110] In one embodiment, the specific implementation process of periodic sampling is as follows:

[0111] Determine the periodic sampling time based on the production shift schedule;

[0112] The regulations stipulate that the silk rolls sampled on the morning shift are for the physical property testing of the afternoon shift; the silk rolls sampled on the afternoon shift are for the physical property testing of the night shift; and the silk rolls sampled on the night shift are for the physical property testing of the morning shift.

[0113] Therefore, the sampling time should not be too early. The physical property test results take about 4 to 5 hours. So when changing shifts, the test should start as soon as you start get off work to ensure that the physical property test results of all the yarn rolls can be obtained before you leave work 8 hours later.

[0114] Based on the above assumption, if the longest full roll time of a certain spinning station is 10 minutes, the full roll time of the entire spinning machine at that station is 48 / 6*10=80 minutes.

[0115] Since the solution does not have a traditional balancing room, considering that the time for the yarn cart to be transferred from the winding workshop to the weighing and external inspection sampling line via automated equipment is 70 minutes, the total time is 80 + 70 = 150 minutes = 2.5 hours.

[0116] In other words, 2.5 hours before each shift change, the system automatically selects 2 to 4 spindles from each spinning station on the weighing and external inspection sampling line for physical property testing. This process is called periodic sampling.

[0117] The periodic sampling system is set to automatically start at a certain time. When periodic sampling is started, the system automatically identifies the yarn cakes on the weighing detection line and performs random checks on the yarn cakes of unsampled spinning positions according to the set rules. Yarn cakes that have already been sampled in the current cycle will not be sampled again, and the system will automatically turn off the periodic sampling of that spinning position in the current cycle.

[0118] In this way, before the shift change, each spinning station has a probability of having its yarn rolls sampled. That is, the yarn sampled in the early shift cycle can provide samples for the physical property testing of the middle shift.

[0119] It should be noted that the specific embodiments in this application are based on the following assumptions:

[0120] Assuming there are 3 shifts in 24 hours, 0-8 am is the night shift, 8-16 am is the morning shift, and 16-24 am is the afternoon shift;

[0121] Assume there are 20 spinning stations in the winding workshop;

[0122] Assuming the full roll time at a certain spinning station is 6 to 10 minutes, then a shift of 480 minutes can produce 48 to 80 rolls of silk.

[0123] Assume that 6 rolls of silk are produced in one batch;

[0124] Suppose a silk reel has 48 silk roll suspension positions.

[0125] In one embodiment, the weighing sensor typically used on the automated packaging line is a finished product sensor, and the weighing scale value of the sensor can be selected, with four options: 2, 5, 10, and 20g. The smaller the scale value of the sensor, the longer the feedback time after weighing is completed, and the higher the weighing accuracy.

[0126] Assuming the standard weight of a yarn roll at a certain spinning position is 10kg, the allowable weight error for qualified products is ±60g.

[0127] In existing technologies, setting the scale division of a load cell to 5, 10, or 20g results in fast weighing speed but low accuracy, leading to potentially inaccurate weighing results. This is especially problematic when the weight error is around ±60g (e.g., hovering between 55-65g, where a stable 55g reading would be less reliable), easily causing false alarms. Setting the scale division to 2g significantly reduces the probability of false alarms, but the weighing time becomes too long, impacting automated production efficiency.

[0128] In this embodiment, an algorithm for automatically determining the steady-state weighing range and steady-state value using a PLC control system is employed to detect the chemical fiber spool. Specifically:

[0129] To reduce the false detection rate, the scale division of the weighing sensor is set to 2g. Based on the upper and lower limits of the weight error for each yarn roll and the real-time weight of the current yarn roll, the PLC automatically determines the stable weighing result.

[0130] Specifically, if the allowable weight error for qualified products is ±60g;

[0131] If the real-time weight of the yarn roll is within ±40g and remains within ±10g for a period of time (e.g., 5 seconds) before the weighing sensor reaches a steady state, the PLC control system considers the weight of the yarn roll to be acceptable.

[0132] If the real-time weight of the yarn roll is outside ±80g when the weighing sensor has not reached a steady state, and this continues for a period of time (e.g., 5 seconds) and the fluctuation is within ±10g, the PLC control system considers that the weight of this yarn roll is unqualified.

[0133] If the real-time weight of the yarn roll is between ±40g and ±80g before the load cell reaches a steady state, the PLC system must wait for the load cell to return a steady state before it can determine whether the weight is within acceptable limits.

[0134] The above numerical ranges can be adjusted according to the allowable error range of different spinning positions of the yarn rolls and the stability of the feedback values ​​from the weighing sensors.

[0135] The purpose of setting a fluctuation range of ±10g is to prevent equipment vibration during the weighing process and to prevent inaccurate measurements from causing system errors.

[0136] In specific implementation, please combine Figure 2 as well as Figure 3 , Figure 2 The flowchart is for the original equilibrium state. Figure 3 An improved workshop flowchart for the weighing external inspection sampling line and the wire caravan has been added to this application. Please refer to [link / reference]. Figure 2The original balancing room includes: a spinning workshop, a doffing workshop, a balancing room, an automatic packaging line, and a weighing and external inspection workshop. Among them, the spinning workshop is used for the spinning process; the doffing workshop is used for spinning positions, doffing times, and when the full roll time is reached, the yarn spindles are loaded onto the yarn cart via winding; in the traditional mode, the balancing room is used for manual management of the yarn cart, manual sampling, and waiting for the physical property test results; the automatic packaging line is used to manually push the yarn rolls that have passed the physical property test onto the packaging line through the balancing room; the weighing and external inspection workshop is used to feed back abnormal results of weighing and appearance inspection on the packaging line to the spinning and doffing workshops.

[0137] In practice, the random inspection of the yarn cart, which was originally carried out in the balancing room, will be transferred to the automatic line for periodic sampling and inspection of the yarn rolls.

[0138] Please see Figure 3 Regarding the above point, this application designs an automated layout and process, namely, the traditional balancing room is eliminated in the solution, and a weighing external inspection sampling line and a yarn warehouse are established. Since a weighing external inspection sampling line is established, yarn rolls that fail the weighing, appearance inspection and periodic sampling through the weighing external inspection sampling line are rejected and sent to the manual yarn picking station. The remaining yarn rolls are then transported by yarn carts into the yarn warehouse.

[0139] The original strategy of weighing all items in the automated system was changed to sampling weighing to increase efficiency.

[0140] With current technology, the yarn rolls can only be weighed and visually inspected at the packaging line, and it takes at least 8 hours to get the weighing and visual inspection results back to the spinning workshop.

[0141] The weighing and external inspection sampling line solution provided in this application can quickly obtain the weight and appearance inspection information of the yarn roll within 2 hours after winding is completed, which solves the lag of the existing technology in this regard and allows the workshop to adjust the process earlier based on the feedback weight and external inspection information.

[0142] The yarn rolls are temporarily stored in the yarn warehouse until they pass the physical property test. Only then can the yarn rolls be sent to the automatic packaging line for packaging and stacking. If the physical property test fails, the yarn cart containing the abnormal yarn rolls will be sent directly out of the warehouse to avoid the trouble of unpacking the yarn rolls after packaging.

[0143] Please see Figure 4 , Figure 4 This is a schematic diagram of a testing system for chemical fiber roll products based on flexible sampling. The system includes:

[0144] Acquisition module 10 is used to obtain the chemical fiber roll to be inspected;

[0145] The weighing external inspection sampling module 20 is used to transport the chemical fiber roll to be inspected to the preset weighing external inspection sampling line using a preset transfer system, and to perform various tests on the chemical fiber roll to be inspected according to preset rules.

[0146] The yarn processing module 30 is used to check if the chemical fiber spool to be tested conforms to a preset rule;

[0147] The chemical fiber roll to be tested is then temporarily stored in a preset yarn storage garage;

[0148] The automatic packaging module 40 is used to periodically sample the chemical fiber rolls to be inspected that meet the preset rules and are temporarily stored in the preset yarn warehouse. If the chemical fiber rolls meet the preset rules for periodic sampling, they are sent out of the warehouse to the packaging line for packaging and stacking.

[0149] Otherwise, the goods will be processed manually at the manual unloading point after leaving the warehouse.

[0150] Otherwise, any non-compliant chemical fiber spools and related information will be fed back to the winding workshop.

[0151] Please see Figure 5 , Figure 5 This is a schematic diagram of a testing device for chemical fiber roll products based on flexible sampling. The device includes:

[0152] Memory 51, on which an executable program is stored;

[0153] Processor 52 is configured to execute the executable program in the memory 51 to implement the steps of any of the methods described above.

[0154] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0155] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means at least two.

[0156] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0157] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0158] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0159] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0160] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0161] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0162] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A detection method for chemical fiber packaged products based on flexible sampling, characterized in that, The method includes: Obtain the chemical fiber roll to be tested; The chemical fiber roll to be tested is transported to the preset weighing and external inspection sampling line using a preset transfer system, and various tests are performed on the chemical fiber roll to be tested according to preset rules. If the chemical fiber roll to be tested conforms to the preset rules; The chemical fiber roll to be tested is then temporarily stored in a preset yarn storage garage; Obtain the results of preset physical property tests on chemical fiber rolls that meet preset rules and are temporarily stored in the preset yarn warehouse. If the chemical fiber rolls meet the preset rules for physical property testing, they are sent out of the warehouse to the packaging line for packaging and stacking. Otherwise, the goods will be processed manually at the manual unloading point after leaving the warehouse. Otherwise, the chemical fiber spools that do not conform to the preset rules and their related information will be fed back to the winding workshop; The process involves using a pre-set transfer system to transport the chemical fiber roll to be inspected to a pre-set weighing and external inspection sampling line, and performing various tests on the chemical fiber roll according to pre-set rules, including: The chemical fiber roll to be tested is transported to the turntable of the preset weighing and external inspection sampling line using a preset transfer system, and the roll on the yarn cart is picked up by a preset robot and placed onto the roller conveyor of the weighing and external inspection sampling line. The yarn rolls are weighed using a preset weighing mode. Yarn rolls that exceed the threshold range set in the background are removed, and the yarn rolls and related information are fed back to the winding workshop. The appearance of the silk rolls is inspected using preset appearance inspection rules, and silk rolls whose appearance does not meet the preset rules are rejected. Otherwise, for yarn rolls whose weight range meets the threshold set by the backend and whose appearance meets the preset rules, the yarn rolls are periodically sampled using the preset periodic sampling mode and the set sampling rules, and the yarn rolls that meet the set sampling rules are subjected to physical property testing. Otherwise, the yarn rolls that do not meet the set sampling rules will be rejected, and the yarn rolls and related information will be fed back to the winding workshop. The weighing mode includes: All weighing modes, time-sharing weighing mode, periodic weighing mode, random weighing mode; The silk rolls that meet the threshold range set by the backend and whose appearance conforms to preset rules are periodically sampled using a preset periodic sampling mode and set sampling rules. Silk rolls that meet the set sampling rules are then subjected to physical property testing, including: Determine the periodic sampling time using a pre-set production schedule; Using the determined periodic sampling times, the periodic sampling information is sent out; The system receives periodic sampling information and uses this information to conduct random inspections on silk rolls that meet the threshold range set by the backend and whose appearance conforms to the preset rules under periodic sampling. If the yarn rolls have already been sampled in the current cycle, they will not be sampled again, and the system will automatically close the cycle sampling for the current cycle of the spinning station. The silk roll obtained by the periodic sampling at the current moment is a sample prepared for the physical property testing at the next moment.

2. The method according to claim 1, characterized in that, The entire weighing mode is used to sample all silk rolls.

3. The method according to claim 1, characterized in that, The time-sharing weighing mode Set the host computer to time-sharing weighing; In the time-sharing weighing mode, the sampled samples are all the samples within the weighing time.

4. The method according to claim 1, characterized in that, The periodic weighing mode. Set the host computer to periodic weighing; In the periodic weighing mode, the sampling sample is taken according to the sampling frequency, and only one piece of yarn from the production spinning station is taken each time.

5. The method according to claim 2, characterized in that, The random weighing mode. Set the host computer to random weighing as preset; In the random weighing mode, the sample is taken according to the number of times the wire falls.

6. The method according to claim 1, characterized in that, If the chemical fiber roll to be tested conforms to preset rules, then the chemical fiber roll to be tested is temporarily stored in a preset yarn storage tank, including: If the chemical fiber roll to be tested conforms to the algorithm of the PLC control system for automatically determining the steady-state range and steady-state value of weighing, then the chemical fiber roll to be tested will be temporarily stored in the preset yarn storage tank.

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