A spunlace nonwoven fabric roll packaging control method, system and related device

Abstract

The application discloses a spunlace non-woven fabric roll packaging control method and system and related devices, and belongs to the technical field of control. A control terminal obtains a current roll diameter value and a current wound length value of a fabric roll during winding and determines a current winding amount. When the winding amount reaches first and second winding amount thresholds in sequence, winding deceleration and pre-sending film, winding stop actions are triggered respectively. A roll diameter recovery increment value generated by the fabric roll due to tension release is obtained within a first preset stationary period after winding stops. Only when the recovery increment value is within a preset reference interval, fabric width cutting and packaging film winding are executed, so that the packaging trigger timing is matched with the actual rebound stable state of the fabric roll. The application effectively solves the problems of packaging meter deviation and poor packaging film adaptability of spunlace non-woven fabric caused by the characteristics of loft, compressibility and rebound, and significantly improves the packaging precision and consistency.

Description

Technical Field

[0001] This application relates to the field of control technology, and in particular to a method, system and related device for controlling the packaging of spunlace nonwoven fabric rolls. Background Technology

[0002] Spunlace nonwoven fabric, a nonwoven material formed by entanglement of fibers through high-pressure water jets, is widely used in medical and hygiene, household cleaning, and industrial wiping fields due to its soft feel, moisture absorption and breathability, and absence of chemical adhesive residue. At the end of the spunlace nonwoven fabric production line, the continuously output fabric webs need to be wound into rolls of a certain specification, and after winding, a packaging film is wrapped around the surface of the rolls to provide dust and moisture protection and facilitate storage and transportation.

[0003] Currently, common fabric roll packaging control methods mainly rely on real-time monitoring of geometric parameters during the winding process. Specifically, laser rangefinders or ultrasonic sensors are typically used to obtain the current roll diameter in real time. When this roll diameter increases to a pre-set target roll diameter, the control system determines that the roll has reached the required specifications, triggers a winding stop command, and then performs fabric cutting and packaging film wrapping actions after stopping. Another common method is to accumulate the length of the wound fabric using a length encoder. When the accumulated length reaches a preset target length value, the corresponding packaging process is triggered.

[0004] However, spunlace nonwoven fabrics possess physical properties significantly different from paper or plastic films. Their fiber network structure endows the material with high initial bulk and significant compressibility. During winding, as the roll diameter increases, the winding radius accumulates layer by layer, and the inner layer of spunlace nonwoven fabric bears the continuously increasing radial pressure applied by the outer layer. Under this pressure, the inner fiber structure undergoes nonlinear compressive deformation, causing the fabric length accommodated per unit thickness to change with the roll diameter. This phenomenon means that the roll diameter and the actual wound length no longer follow a fixed geometric conversion relationship. Simply relying on either the roll diameter or length as a single geometric parameter for packaging trigger control makes it difficult to accurately guarantee that the actual packaged length matches the preset length, easily leading to deviations in roll specifications.

[0005] Furthermore, when the winding drive stops and the winding tension is released, the compressed fiber network experiences stress release due to its own elasticity, manifesting as a continuous rebound of the fabric roll's radial dimensions in a static state. If the packaging film is wrapped before the fabric roll has fully rebounded or when the rebound is inadequate, the packaging film may tear during subsequent resting due to continued expansion of the fabric roll, or develop loose wrinkles due to insufficient rebound, directly affecting the packaging's sealing performance and smoothness. Existing technologies typically do not incorporate this rebound process after winding stops into their control considerations, making it difficult to consistently control packaging quality. Summary of the Invention

[0006] This application provides a method, system, and related apparatus for controlling the packaging of spunlace nonwoven fabric rolls to improve the above-mentioned problems.

[0007] To achieve the above objectives, this application adopts the following technical solution:

[0008] Firstly, this application proposes a method for controlling the packaging of spunlace nonwoven fabric rolls, applied to a spunlace nonwoven fabric roll packaging control system. The system includes a control terminal, and the method is executed by the control terminal, including:

[0009] During the winding process, the current roll diameter and current wound length of the fabric roll are obtained;

[0010] Determine the current roll weight based on the current roll diameter and the current wound length.

[0011] When the current roll quantity reaches the preset first roll quantity threshold, a first control command is generated to execute the winding deceleration and packaging film pre-feeding actions.

[0012] When the current roll quantity reaches the preset second roll quantity threshold, a second control command is generated to execute a winding stop action, wherein the second roll quantity threshold is greater than the first roll quantity threshold.

[0013] During the first preset static period after the winding stop action is completed, the roll diameter recovery increment value of the fabric roll in the static state is obtained, wherein the roll diameter recovery increment value is used to characterize the radial dimension springback of the fabric roll after the winding tension is released.

[0014] The roll diameter recovery increment value is compared with the preset recovery increment reference range;

[0015] When the roll diameter recovery increment value is within the recovery increment reference range, a third control command is generated to execute the fabric cutting and packaging film wrapping actions.

[0016] In conjunction with the first aspect, optionally, based on the current roll diameter and the current wound length, the current roll weight is determined, including:

[0017] Obtain pre-established length reference data, which includes the expected winding length corresponding to different roll diameter values ​​during the winding process;

[0018] The current roll diameter value is matched with the length reference data, and the expected value of the wound length corresponding to the current roll diameter value is determined based on the matching result.

[0019] The length deviation is obtained based on the current winding length and the expected winding length.

[0020] The length deviation is determined as the current roll weight of the fabric.

[0021] In conjunction with the first aspect, the method may optionally also include:

[0022] If the roll diameter recovery increment value is within the recovery increment reference range, then retain the roll diameter recovery increment value and the final roll diameter value corresponding to the moment when the fabric cutting action is performed;

[0023] The roll diameter recovery increment value is associated with the final roll diameter value and stored to form a recovery data group corresponding to the current roll.

[0024] Retrieve historical recovery data sets corresponding to multiple historical fabric rolls of the same specification that were packaged before the current fabric roll;

[0025] Based on the current fabric roll recovery data set and the historical recovery data sets of multiple historical fabric rolls of the same specification, the trend characterization value of the roll diameter recovery increment as a function of the final roll diameter value is determined, and the length reference data used in the winding process of subsequent fabric rolls of the same specification is corrected based on the trend characterization value.

[0026] In conjunction with the first aspect, optionally, based on the current fabric roll recovery data set and historical recovery data sets of multiple historical fabric rolls of the same specification, a trend characterization value is determined as the roll diameter recovery increment changes with the final roll diameter value. Based on the trend characterization value, the length reference data used in the winding process of subsequent fabric rolls of the same specification is corrected, including:

[0027] Divide the volume diameter recovery increment value in each recovered data group by the final volume diameter value of the recovered data group to obtain the unit volume diameter recovery amount corresponding to the recovered data group;

[0028] Obtain the average value of the unit volume recovery amount corresponding to all recovered data groups, and determine the average value as the trend characterization value;

[0029] Obtain the preset baseline recovery coefficient, and determine the corrected expected winding length by taking the product of the expected winding length corresponding to the winding diameter value and the trend characterization value and the preset baseline recovery coefficient.

[0030] In conjunction with the first aspect, the method may optionally also include:

[0031] During the winding process, the identification information of the current roll and the corresponding actual packaging control parameters are obtained. The actual packaging control parameters include at least the second roll loading threshold when the winding stop action is triggered.

[0032] After the fabric roll is packaged and left to stand for a second preset static period, the deformation characterization value of the fabric roll after packaging is obtained. The deformation characterization value is used to characterize the amount of morphological change of the fabric roll due to the release of internal stress after packaging.

[0033] Based on the deformation characterization value and the preset deformation reference value, the parameter correction amount used to correct the control parameters of subsequent fabric roll packaging of the same specification is determined;

[0034] The parameter correction amount is applied to the packaging control process of subsequent fabric rolls of the same specification to adjust the second roll quantity threshold corresponding to the subsequent fabric rolls of the same specification.

[0035] In conjunction with the first aspect, the method may optionally also include:

[0036] During the process of wrapping the packaging film, multiple wrapping tension values ​​applied to the surface of the fabric roll by the packaging film unwinding mechanism are obtained.

[0037] Based on multiple wrapping tension values, determine the tension fluctuation sequence of the wrapping tension value over time during the wrapping action of the packaging film;

[0038] The difference between the maximum and minimum tension values ​​in the tension fluctuation sequence is determined as the winding tension fluctuation amplitude.

[0039] The amplitude of the winding tension fluctuation is correlated with the roll diameter recovery increment to obtain a matching parameter that characterizes the degree of matching between packaging tightness and roll resilience.

[0040] The matching degree parameter is compared with the preset matching degree reference range;

[0041] When the matching degree parameter exceeds the matching degree reference range, a fourth control command is generated to adjust the wrapping tension value in the subsequent wrapping action of the packaging film of the same specification roll.

[0042] In conjunction with the first aspect, optionally, the amplitude of the winding tension fluctuation is correlated with the roll diameter recovery increment to obtain a matching parameter characterizing the degree of matching between packaging tightness and roll resilience characteristics, including:

[0043] The quotient of the winding tension fluctuation amplitude and the roll diameter recovery increment is determined as the matching degree parameter.

[0044] A second aspect of the present invention provides a control system for packaging nonwoven fabric rolls, comprising:

[0045] The first acquisition module is used to acquire the current roll diameter and the current wound length of the fabric roll during the winding process.

[0046] The determination module is used to determine the current roll weight of the fabric roll based on the current roll diameter and the current wound length.

[0047] The first generation module is used to generate a first control command when the current roll quantity reaches a preset first roll quantity threshold, so as to execute the winding deceleration and packaging film pre-feeding action.

[0048] The second generation module is used to generate a second control command when the current roll quantity reaches a preset second roll quantity threshold, so as to execute a winding stop action, wherein the second roll quantity threshold is greater than the first roll quantity threshold.

[0049] The second acquisition module is used to acquire the roll diameter recovery increment value of the fabric roll in the static state during the first preset static period after the winding stop action is completed. The roll diameter recovery increment value is used to characterize the radial dimension springback of the fabric roll after the winding tension is released.

[0050] The comparison module is used to compare the roll diameter recovery increment value with a preset recovery increment reference range;

[0051] The third generation module is used to generate a third control command when the roll diameter recovery increment value is within the recovery increment reference range, so as to execute the fabric cutting and packaging film wrapping actions.

[0052] A third aspect of the present invention provides an electronic device comprising:

[0053] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method proposed in the first aspect of the present invention.

[0054] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method as described in the first aspect of the embodiments of the present invention.

[0055] In summary, the above method and apparatus have the following technical effects:

[0056] The spunlace nonwoven fabric roll packaging control method provided by the present invention sets a first preset static period between the winding stop action and the fabric cutting and packaging film winding action, so that the moment when the packaging film starts to wind can be precisely matched with the actual physical state where the radial dimension of the fabric roll tends to be stable. This avoids the problem of the packaging film being torn or loosened during the subsequent static period due to neglecting the rebound process in the traditional method, and improves the sealing reliability and appearance flatness of the packaging.

[0057] Secondly, by comparing the real-time acquired current roll diameter and current wound length with pre-established length benchmark data, the length deviation is obtained and used as a parameter characterizing the roll's packaging state, rather than relying directly on the absolute values ​​of roll diameter or length. The introduction of relative deviation compensates for the disturbance to geometric parameters caused by the dynamic changes in bulkiness of the spunlace nonwoven fabric during winding due to the accumulation of pressure layer by layer. This makes the triggering timing of winding deceleration and winding stop more closely match the actual material accumulation level inside the roll, thereby improving the control accuracy of the target package length.

[0058] Furthermore, by associating and storing the roll diameter recovery increment value recorded for each successful packaging with the corresponding final roll diameter value as a recovery data set, and using the recovery data sets of multiple historical rolls of the same specification to determine the changing trend of the roll diameter recovery increment, the length reference data used in the subsequent roll winding process is dynamically corrected. This enables the control system to automatically sense and compensate for the slow drift of material bulkiness and resilience characteristics, ensuring that the packaging specifications and compactness of different rolls remain highly consistent during long-term continuous production operations. Attached Figure Description

[0059] Figure 1 This is a flowchart illustrating a method for controlling the packaging of spunlace nonwoven fabric rolls according to an embodiment of this application.

[0060] Figure 2 This is a schematic diagram of the structure of a spunlace nonwoven fabric roll packaging control system proposed in an embodiment of this application. Detailed Implementation

[0061] 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, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] like Figure 1 As shown, this embodiment provides a method for controlling the packaging of spunlace nonwoven fabric rolls. This method is applied to a spunlace nonwoven fabric roll packaging control system, which includes at least one control terminal, such as a programmable logic controller (PLC) or an industrial control computer. The method is executed by the control terminal and includes the following steps S101 to S107.

[0063] S101: During the winding process, obtain the current roll diameter and the current wound length of the fabric roll.

[0064] Understandably, at the winding station of a spunlace nonwoven fabric production line, the fabric roll is driven to rotate by a winding shaft, winding the continuously input spunlace nonwoven fabric web onto the shaft. During this process, data is acquired in real time by sensors associated with the winding station. The current roll diameter can be obtained by directly measuring the distance from the fabric roll surface to the winding shaft axis using a laser rangefinder, ultrasonic sensor, or contact displacement sensor, or indirectly calculated by the ratio of the rotational angular velocity of the winding shaft to the linear velocity of the fabric web input. The current wound length can be accumulated by a length encoder installed on the fabric web conveying path, starting from the winding start point. The specific method of acquisition is not limited in this application.

[0065] S102: Determine the current roll weight based on the current roll diameter and the current wound length.

[0066] Because spunlace nonwoven fabrics have high bulk and can be compressed under winding pressure, the relationship between their roll diameter and wound length is not a simple linear geometric relationship. Therefore, in this embodiment, the volume or absolute length value is not directly used as the roll weight, but a parameter that reflects the degree of deviation from the actual roll state is adopted.

[0067] Understandably, due to the high bulkiness and compressibility of spunlace nonwoven fabric under winding pressure, the relationship between its roll diameter and wound length is not a simple linear geometric relationship. Therefore, this embodiment does not directly use the absolute value of volume or length as the roll weight, but instead employs a parameter that reflects the degree of deviation from the actual roll condition.

[0068] For example, step S102 can be steps S1021 to S1024.

[0069] S1021: Obtain pre-established length reference data, wherein the length reference data includes the expected winding length corresponding to different roll diameter values ​​during the winding process.

[0070] Understandably, length baseline data is pre-established by performing a complete standard winding process on spunlace nonwoven fabric of the same specification under standard operating conditions and recording the data. For example, starting from the initial roll diameter, the current wound length value is recorded every preset roll diameter increment, thus forming a curve or data table showing the correspondence between the roll diameter value and the expected wound length. This length baseline data reflects the geometric fill relationship that spunlace nonwoven fabric of this specification should have under ideal winding tension.

[0071] S1022: Match the current roll diameter value with the length reference data, and determine the expected value of the wound length corresponding to the current roll diameter value based on the matching result.

[0072] For example, the current roll diameter value obtained in real time can be compared with the roll diameter value in the length reference data table to find the same or closest roll diameter value entry, and the expected value of the wound length corresponding to that entry can be read.

[0073] S1023: Based on the current wound length value and the expected wound length value, obtain the length deviation.

[0074] The length deviation can be obtained by comparing the actual current wound length with the expected value obtained from the table above.

[0075] S1024: Determine the length deviation as the current roll weight of the fabric roll.

[0076] In this embodiment, the current roll weight is defined as the length deviation. A positive deviation indicates that the actual winding length at the current roll diameter is greater than the expected value, meaning that the spunlace nonwoven fabric is compressed more tightly during the winding process; a negative deviation indicates that the actual winding length is less than the expected value, meaning that the current roll is looser.

[0077] S103: When the current roll quantity reaches the preset first roll quantity threshold, a first control command is generated to execute the winding deceleration and packaging film pre-feeding actions.

[0078] Understandably, the length deviation, i.e., the current roll weight, gradually changes as winding progresses. When this deviation reaches a preset first roll weight threshold, it indicates that the fabric roll is close to the preset packaging specifications. At this point, the control terminal generates a first control command and sends it to the winding drive motor and the packaging film pre-feeding mechanism. The winding drive motor responds to the command by reducing its speed, lowering the winding line speed from the normal production speed to a preset low-speed setting; the packaging film pre-feeding mechanism starts, pulling the packaging film to the position to be wrapped, preparing for subsequent rapid packaging.

[0079] S104: When the current roll quantity reaches the preset second roll quantity threshold, a second control command is generated to execute the winding stop action, wherein the second roll quantity threshold is greater than the first roll quantity threshold.

[0080] Understandably, when the length deviation further reaches the preset second roll weight threshold, it indicates that the fabric roll has reached the target roll weight specification. The control terminal then generates a second control command and sends it to the winding drive motor. The winding drive motor responds to the command and stops rotating, ending the active winding action of the fabric roll. At this point, the spunlace nonwoven fabric web remains connected and has not yet been cut.

[0081] S105: During the first preset static period after the winding stop action is completed, the roll diameter recovery increment value of the fabric roll in the static state is obtained, wherein the roll diameter recovery increment value is used to characterize the radial dimension springback of the fabric roll after the winding tension is released.

[0082] After winding stops, the winding tension applied to the fabric roll is released. Due to the inherent loose elasticity and internal stress release of the spunlace nonwoven fabric, the fabric roll will experience radial dimensional rebound, meaning the roll diameter will gradually increase while at rest. The first preset rest period is set as a time window from the moment winding stops until the rebound tends to stabilize. The duration of this period can be determined through prior experiments and preset in the control terminal.

[0083] During the first preset static period, the control terminal continuously or at a higher frequency acquires the instantaneous roll diameter value of the fabric roll. The difference between the roll diameter value at the end of this period and the roll diameter value at the end of the winding stop operation is determined as the roll diameter recovery increment value. This increment value directly characterizes the radial rebound capability of the fabric roll under this specific winding history.

[0084] Compared to direct packaging, by capturing the rebound amount, subsequent packaging triggering can be matched with the actual stable size of the fabric roll, thus fundamentally solving the problem of packaging film tearing or loosening caused by rebound. Furthermore, obtaining this incremental value only requires existing roll diameter sensors, without adding extra hardware, making it highly feasible in engineering.

[0085] S106: Compare the roll diameter recovery increment value with the preset recovery increment reference range.

[0086] The preset recovery increment reference range is a reasonable rebound range determined in advance based on the specifications of the spunlace nonwoven fabric and the characteristics of the packaging film, such as shrinkage rate and elastic modulus. For example, for a certain specification of fabric roll, the reference range can be set to [3mm, 8mm].

[0087] S107: When the roll diameter recovery increment value is within the recovery increment reference range, a third control command is generated to execute the fabric cutting and packaging film wrapping actions.

[0088] For example, if the measured roll diameter recovery increment falls within [3mm, 8mm], it indicates that the roll's resilience matches the wrapping requirements of the packaging film, making it the optimal time to perform packaging. The control terminal generates a third control command and sends it to the fabric cutting mechanism and the packaging film wrapping drive mechanism. The cutting mechanism cuts the spunlace nonwoven fabric upstream of the winding station; simultaneously, the packaging film wrapping mechanism starts, wrapping the pre-delivered packaging film onto the roll surface to complete the packaging. If the roll diameter recovery increment exceeds the recovery increment reference range, the system can issue an alarm or enter an abnormal handling process without immediately triggering the cutting and packaging actions to avoid producing defective products.

[0089] By introducing a recovery increment reference range as a threshold, the triggering of the packaging action no longer depends on a preset fixed size, but rather on whether the actual physical state of the fabric roll is ready to be packaged. When the rebound amount is within the reference range, it means that wrapping is performed at this time, and the packaging film can form a moderate and stable wrapping force with the surface of the fabric roll. When the rebound amount is abnormal, the system can identify and pause the process in time, avoiding sending potentially defective products to the next process, thereby significantly improving the pass rate of the final product and the consistency of packaging.

[0090] Optionally, in some embodiments, to enhance the adaptability to fluctuations in material properties across different batches, the method may further include the following steps:

[0091] S301: If the roll diameter recovery increment value is within the recovery increment reference range, retain the roll diameter recovery increment value and the final roll diameter value corresponding to the moment the fabric width cutting action is performed; associate the roll diameter recovery increment value and the final roll diameter value to form a recovery data group corresponding to the current roll.

[0092] Understandably, for each fabric roll that is successfully packaged, the system records a data pair (ΔR, R_final), where ΔR is the roll diameter recovery increment value and R is the final roll diameter value at the time of cutting. This data pair, as a recovery data group, is stored in the control terminal's memory along with the fabric roll's identification information, such as batch number and roll number.

[0093] S302: Retrieve the historical recovery data group corresponding to multiple historical fabric rolls of the same specification that were packaged before the current fabric roll.

[0094] During data correction, the control terminal reads recovery data sets from memory of multiple historical fabric rolls of the same specifications as the current fabric roll that have recently been packaged.

[0095] S303: Based on the recovery data set of the current roll and the historical recovery data sets of multiple historical rolls of the same specification, determine the trend characterization value of the roll diameter recovery increment as a function of the final roll diameter value, and based on the trend characterization value, correct the length reference data used by subsequent rolls of the same specification during the winding process.

[0096] Specifically, the roll diameter recovery increment in each recovery data group is divided by the final roll diameter value in that recovery data group to obtain the unit roll diameter recovery amount (i.e., ΔR / R) corresponding to that recovery data group. This ratio reflects the average rebound capability corresponding to a unit final roll diameter. Then, the average unit roll diameter recovery amount for all recovery data groups, including the current roll and historical rolls used in the calculation, is obtained and this average value is determined as the trend characterization value.

[0097] Further, a preset reference recovery coefficient K can be obtained. This coefficient is a reference value of unit roll diameter recovery calculated after standardly winding spunlaced nonwoven fabrics of the same specification and measuring their rebound characteristics under standard working conditions, and can be regarded as a fixed constant.

[0098] For each roll diameter value (e.g., roll diameter D) in the length reference data, the original expected value of the wound length is L. The corrected expected value of the wound length L' is determined by the following relationship:

[0099] L'=L×(T / K)

[0100] wherein T is a trend characterization value.

[0101] Finally, the corrected expected wound length Li' is used to replace the original Li in the length reference data, which is used for subsequent matching calculation of cloth rolls of the same specification.

[0102] It can be understood that if the rebound trend of recently produced cloth rolls is relatively strong, that is, T>K, it indicates that the material is fluffier or has better elasticity. Then, under the same roll diameter, the actually accommodated length should be relatively smaller, so the expected length needs to be increased accordingly, so that the system triggers deceleration and stop earlier during winding to compensate for the size increment caused by rebound. Conversely, if the rebound trend is weak (T<K), the expected length is decreased. In this way, by establishing a cross-roll reference data feedback correction mechanism, the slow drift of material properties can be automatically adapted, and the consistency of the packaging specifications of cloth rolls in the continuous production process is ensured.

[0103] Further, in order to monitor and feed back the tension fluctuation during the wrapping of the packaging film, so as to optimize the execution parameters of the packaging action. In this embodiment, the following steps may further be included:

[0104] S401: during the execution of the wrapping action of the packaging film, acquiring a plurality of winding tension values applied by the packaging film unwinding mechanism to the surface of the cloth roll.

[0105] It can be understood that, during the execution of the wrapping action of the packaging film, the packaging film is pulled out from the unwinding mechanism and wound onto the surface of the rotating cloth roll. A tension sensor is arranged on the unwinding mechanism and used for detecting the tension borne by the packaging film in real time. The control terminal acquires the tension values at a certain sampling frequency.

[0106] S402: based on the plurality of winding tension values, determining a tension fluctuation sequence in which the winding tension values change with time during the execution of the wrapping action of the packaging film; determining the difference between the maximum tension value and the minimum tension value in the tension fluctuation sequence as the winding tension fluctuation amplitude.

[0107] The control terminal can record the tension value changes throughout the winding process, forming a tension fluctuation curve. By identifying the maximum value Fmax and the minimum value Fmin on this curve, the difference ΔF = Fmax - Fmin is calculated; this difference is the amplitude of the winding tension fluctuation. It is understandable that when the packaging film is wound onto the surface of a spunlace fabric roll with resilient properties, the tiny radial pulsations of the roll will act in the opposite direction on the packaging film, causing tension fluctuations. Therefore, the amplitude of the tension fluctuation indirectly reflects the degree of resistance between the roll's resilience and the winding action.

[0108] S403: Correlate the amplitude of the winding tension fluctuation with the roll diameter recovery increment to obtain a matching parameter that characterizes the degree of matching between packaging tightness and roll resilience.

[0109] In a preferred embodiment, the winding tension fluctuation amplitude ΔF is divided by the roll diameter recovery increment ΔR, and the resulting quotient is determined as the matching degree parameter M, i.e., M=ΔF / ΔR.

[0110] S404: Compare the matching degree parameter with the preset matching degree reference range.

[0111] The preset matching degree reference range is an ideal range determined according to process requirements, such as [M1, M2].

[0112] S405: When the matching degree parameter exceeds the matching degree reference range, a fourth control command is generated to adjust the wrapping tension value in the subsequent wrapping action of the packaging film of the same specification roll.

[0113] Understandably, if the matching parameter M is greater than the upper limit of the reference range M2, it indicates that the tension fluctuation caused by the unit rebound is too large. This may be because the winding tension setting is too high, causing the packaging film to exert excessive constraint on the surface of the rebounding fabric roll. At this time, a first tension adjustment command is generated to reduce the winding tension value of subsequent fabric rolls of the same specification by a preset step size.

[0114] If the matching parameter M is less than the lower limit of the reference range M1, it indicates that the tension fluctuation is too small and the winding process is too smooth. This may mean that the winding tension setting is too low, and the packaging film fails to adhere tightly to the surface of the fabric roll. At this time, a second tension adjustment command is generated to increase the winding tension value of subsequent fabric rolls of the same specification by a preset step size. By correlating the dynamic tension fluctuation during the packaging film winding process with the static rebound after winding stops, a quality feedback closed loop can be constructed to ensure the real-time optimal matching between packaging action parameters and material rebound characteristics.

[0115] This invention discloses a packaging control method for spunlace nonwoven fabric rolls. During the winding process, a control terminal acquires the current roll diameter and current wound length of the fabric roll and determines the current roll weight. When the roll weight sequentially reaches the first and second roll weight thresholds, winding deceleration, pre-film feeding, and winding stop actions are triggered, respectively. During the first preset static period after winding stop, the roll diameter recovery increment value generated by the release of tension is acquired. Fabric cutting and packaging film wrapping are only performed when the recovery increment value is within a preset reference range, thereby matching the packaging triggering timing with the actual rebound stability state of the fabric roll. This invention effectively solves the problems of packaging meter deviation and poor packaging film adaptability caused by the fluffy, compressible, and resilient characteristics of spunlace nonwoven fabrics, significantly improving packaging accuracy and consistency.

[0116] Based on the same inventive concept, this application proposes a spunlace nonwoven fabric roll packaging control system. Please refer to [link to relevant documentation]. Figure 2 ,include:

[0117] The first acquisition module is used to acquire the current roll diameter and the current wound length of the fabric roll during the winding process.

[0118] The determination module is used to determine the current roll weight of the fabric roll based on the current roll diameter and the current wound length.

[0119] The first generation module is used to generate a first control command when the current roll quantity reaches a preset first roll quantity threshold, so as to execute the winding deceleration and packaging film pre-feeding action.

[0120] The second generation module is used to generate a second control command when the current roll quantity reaches a preset second roll quantity threshold, so as to execute a winding stop action, wherein the second roll quantity threshold is greater than the first roll quantity threshold.

[0121] The second acquisition module is used to acquire the roll diameter recovery increment value of the fabric roll in the static state during the first preset static period after the winding stop action is completed. The roll diameter recovery increment value is used to characterize the radial dimension springback of the fabric roll after the winding tension is released.

[0122] The comparison module is used to compare the roll diameter recovery increment value with a preset recovery increment reference range;

[0123] The third generation module is used to generate a third control command when the roll diameter recovery increment value is within the recovery increment reference range, so as to execute the fabric cutting and packaging film wrapping actions.

[0124] Based on the same inventive concept, embodiments of this application also propose an electronic device, which includes:

[0125] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the spunlace nonwoven fabric roll packaging control method of the embodiments of this application.

[0126] In addition, to achieve the above objectives, embodiments of this application also propose a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the spunlace nonwoven fabric roll packaging control method of embodiments of this application.

[0127] The following is a detailed introduction to the various components of the electronic device:

[0128] In this context, the processor is the control center of the electronic device. It can be a single processor or a collective term for multiple processing elements. For example, a processor can be one or more central processing units (CPUs), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention, such as one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs).

[0129] Alternatively, the processor can perform various functions of the electronic device by running or executing software programs stored in memory, and by calling data stored in memory.

[0130] The memory is used to store the software program that executes the solution of the present invention, and the execution is controlled by the processor. The specific implementation method can be referred to the above method embodiment, which will not be repeated here.

[0131] Optionally, the memory can be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory can be integrated with the processor or exist independently and coupled to the processor through an interface circuit of an electronic device; the embodiments of the present invention do not specifically limit this.

[0132] A transceiver is used to communicate with network devices or with terminal devices.

[0133] Optionally, the transceiver may include a receiver and a transmitter. The receiver is used to implement the receiving function, and the transmitter is used to implement the sending function.

[0134] Optionally, the transceiver can be integrated with the processor or exist independently and coupled to the processor through the router's interface circuit. This embodiment of the invention does not specifically limit this.

[0135] Furthermore, the technical effects of the electronic device can be referred to the technical effects of the data transmission method in the above method embodiments, and will not be repeated here.

[0136] It should be understood that the processor in the embodiments of the present invention can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0137] It should also be understood that the memory in the embodiments of the present invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDRSDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DRRAM).

[0138] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), 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. A 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 flow or function according to the embodiments of the present invention is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. Computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, 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. A 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. Available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media. Semiconductor media can be solid-state drives.

[0139] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0140] In this invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0141] It should be understood that, in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0142] Those skilled in the art will recognize that the units 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 implementations should not be considered beyond the scope of this invention.

Claims

1. A method for controlling the packaging of spunlace nonwoven fabric rolls, characterized in that, A control system for packaging spunlace nonwoven fabric rolls is applied, the system including a control terminal, and the method is executed by the control terminal, including: During the winding process, the current roll diameter and current wound length of the fabric roll are obtained; Based on the current roll diameter and the current wound length, the current roll weight is determined, including: Obtain pre-established length reference data, wherein the length reference data includes the expected winding length corresponding to different roll diameter values ​​during the winding process of the fabric roll; The current roll diameter value is matched with the length reference data, and the expected value of the wound length corresponding to the current roll diameter value is determined based on the matching result. Based on the current wound length value and the expected wound length value, the length deviation is obtained; The length deviation is determined as the current roll weight of the fabric roll; When the current roll quantity reaches the preset first roll quantity threshold, a first control command is generated to execute the winding deceleration and packaging film pre-feeding actions. When the current roll quantity reaches a preset second roll quantity threshold, a second control command is generated to execute a winding stop action, wherein the second roll quantity threshold is greater than the first roll quantity threshold. During the first preset static period after the winding stop action is completed, the roll diameter recovery increment value of the fabric roll in the static state is obtained, wherein the roll diameter recovery increment value is used to characterize the radial dimension rebound amount of the fabric roll after the winding tension is released. The roll diameter recovery increment value is compared with a preset recovery increment reference range; When the roll diameter recovery increment value is within the recovery increment reference range, a third control command is generated to execute the fabric cutting and packaging film wrapping actions.

2. The method for controlling the packaging of spunlace nonwoven fabric rolls according to claim 1, characterized in that, The method further includes: If the roll diameter recovery increment value is within the recovery increment reference range, then the roll diameter recovery increment value and the final roll diameter value corresponding to the moment when the fabric cutting action is performed are retained; The roll diameter recovery increment value is associated with the final roll diameter value and stored to form a recovery data group corresponding to the current roll. Obtain historical recovery data sets corresponding to multiple historical fabric rolls of the same specification that were packaged before the current fabric roll; Based on the recovery data set of the current roll and the historical recovery data set of the multiple historical rolls of the same specification, a trend characterization value is determined to show the change of the roll diameter recovery increment with the final roll diameter value. Based on the trend characterization value, the length reference data used by subsequent rolls of the same specification during the winding process is corrected.

3. The method for controlling the packaging of spunlace nonwoven fabric rolls according to claim 2, characterized in that, Based on the current fabric roll recovery data set and the historical recovery data sets of the multiple historical fabric rolls of the same specification, a trend characterization value is determined for the change in roll diameter recovery increment with the final roll diameter value. Based on this trend characterization value, the length reference data used for subsequent fabric rolls of the same specification during the winding process is corrected, including: Divide the volume diameter recovery increment value in each of the recovered data groups by the final volume diameter value of the recovered data group to obtain the unit volume diameter recovery amount corresponding to the recovered data group; Obtain the average value of the unit volume recovery amount corresponding to all the recovered data groups, and determine the average value as the trend characterization value; Obtain a preset baseline recovery coefficient, and determine the corrected expected value of the wound length as the ratio of the product of the expected value of the wound length corresponding to the winding diameter value and the trend characterization value to the preset baseline recovery coefficient.

4. The method for controlling the packaging of spunlace nonwoven fabric rolls according to claim 1, characterized in that, The method further includes: During the winding process, the identification information of the current roll and the corresponding actual packaging control parameters are obtained, wherein the actual packaging control parameters include at least the second roll weight threshold when the winding stop action is triggered; After the fabric roll is packaged and left to stand for a second preset static period, the deformation characterization value of the fabric roll after packaging is obtained. The deformation characterization value is used to characterize the amount of morphological change of the fabric roll due to the release of internal stress after packaging. Based on the deformation characterization value and the preset deformation reference value, the parameter correction amount used to correct the control parameters of subsequent packaging of the same specification cloth roll is determined; The parameter correction amount is applied to the packaging control process of the subsequent fabric rolls of the same specification to adjust the second roll quantity threshold corresponding to the subsequent fabric rolls of the same specification.

5. The method for controlling the packaging of spunlace nonwoven fabric rolls according to claim 1, characterized in that, The method further includes: During the process of performing the packaging film wrapping action, multiple wrapping tension values ​​are obtained by the packaging film unwinding mechanism acting on the surface of the fabric roll; Based on multiple winding tension values, a tension fluctuation sequence is determined as the winding tension values ​​change over time during the wrapping action of the packaging film. The difference between the maximum and minimum tension values ​​in the tension fluctuation sequence is determined as the winding tension fluctuation amplitude. The amplitude of the winding tension fluctuation is correlated with the roll diameter recovery increment to obtain a matching parameter that characterizes the degree of matching between packaging tightness and roll resilience. The matching degree parameter is compared with a preset matching degree reference range; When the matching degree parameter exceeds the matching degree reference range, a fourth control command is generated to adjust the winding tension value in the wrapping action of the packaging film of the subsequent roll of fabric of the same specification.

6. The method for controlling the packaging of spunlace nonwoven fabric rolls according to claim 5, characterized in that, The amplitude of the winding tension fluctuation is correlated with the roll diameter recovery increment to obtain a matching parameter characterizing the degree of matching between packaging tightness and roll resilience, including: The quotient of the winding tension fluctuation amplitude and the roll diameter recovery increment is determined as the matching degree parameter.

7. A spunlace nonwoven fabric roll packaging control system, characterized in that, include: The first acquisition module is used to acquire the current roll diameter value and the current wound length value of the cloth roll during the winding process. The determining module is used to determine the current package weight of the fabric roll based on the current roll diameter value and the current wound length value, including: Obtain pre-established length reference data, wherein the length reference data includes the expected winding length corresponding to different roll diameter values ​​during the winding process of the fabric roll; The current roll diameter value is matched with the length reference data, and the expected value of the wound length corresponding to the current roll diameter value is determined based on the matching result. Based on the current wound length value and the expected wound length value, the length deviation is obtained; The length deviation is determined as the current roll weight of the fabric roll; The first generation module is used to generate a first control command when the current roll quantity reaches a preset first roll quantity threshold, so as to execute the winding deceleration and packaging film pre-feeding action. The second generation module is used to generate a second control command when the current roll quantity reaches a preset second roll quantity threshold, so as to execute a winding stop action, wherein the second roll quantity threshold is greater than the first roll quantity threshold. The second acquisition module is used to acquire the roll diameter recovery increment value of the fabric roll in a static state during a first preset static period after the winding stop action is completed. The roll diameter recovery increment value is used to characterize the radial dimension rebound amount of the fabric roll after the winding tension is released. The comparison module is used to compare the roll diameter recovery increment value with a preset recovery increment reference range; The third generation module is used to generate a third control command when the roll diameter recovery increment value is within the recovery increment reference range, so as to execute the fabric cutting and packaging film wrapping actions.

8. An electronic device, characterized in that, include: At least one processor; And, a memory communicatively connected to at least one of the processors; The memory stores instructions that can be executed by at least one of the processors, which are executed by at least one of the processors to enable the at least one of the processors to perform a spunlace nonwoven fabric roll packaging control method as claimed in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements a method for controlling the packaging of spunlace nonwoven fabric rolls as claimed in any one of claims 1-6.

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