Bobbin paper surplus rapid measurement and adjustment method, system and mechanism and storage medium

Abstract

The invention relates to the technical field of cigarette production equipment assistance, in particular to a bobbin paper remaining amount rapid measuring and adjusting method, system and mechanism and a storage medium. Calculating the deviation value of the remaining length of the bobbin paper; judging whether the range is exceeded; if the range is exceeded, the vehicle-related mechanism is adjusted; constructing a control model, and inputting the deviation value into the control model to obtain the rotation angle of the nut; adjusting the deviation of the brake mechanism to obtain the residual length of the bobbin paper after adjustment; obtaining a fine adjustment deviation value; obtaining the residual amount diameter of the target bobbin paper, and performing adjustment according to the residual amount diameter; and if not, obtaining a fine adjustment deviation value according to the residual length, and returning to execute the steps of obtaining the residual diameter of the target bobbin paper and adjusting according to the residual diameter of the target bobbin paper. According to the invention, by fusing the weight conversion measurement and the step adjustment method, the data driving and standardization of the bobbin paper residual measurement and adjustment operation are realized, the precision and efficiency are obviously improved, and the operation difficulty and loss are reduced.

Description

Technical Field

[0001] This invention relates to the field of auxiliary technology for cigarette production equipment, specifically to a method, system, and storage medium for rapidly measuring and adjusting the remaining amount of paper rolls in a YF71 automatic paper roll changing machine. Background Technology

[0002] In the cigarette manufacturing industry, cigarette paper, as a core raw material in the cigarette-making process, directly impacts enterprise profitability due to its consumption cost. Therefore, the unit consumption of cigarette paper has become a key benchmark for measuring production efficiency and cost control, attracting significant attention from various tobacco companies within the industry. According to data from the "2024 Cigarette Factory Classification Benchmarking Report," most cigarette factories still have significant room for improvement in their single-carton cigarette paper consumption. Automatic cigarette paper changing machines, as a crucial component of high-speed cigarette-making equipment, are essential for ensuring the continuous operation of the cigarette-making process. However, in actual production, there are still pressing technical challenges in the measurement and adjustment of remaining cigarette paper.

[0003] In continuous cigarette production, to ensure a continuous supply of paper stock, a dual-station alternating feeding method (left and right) is commonly used. The specific process is as follows: to ensure a smooth splicing process and avoid paper breaks, when the paper stock at the previous station (left station) is about to run out, the next station (right station) needs to start and accelerate in advance. The splicing is completed when the linear speeds of the two stations are synchronized, and then the paper supply at the left station is cut off. The unused paper stock at this point is the remaining length of the paper stock. This remaining length is the material allowance necessary to achieve the continuous alternating feeding process, and it itself constitutes an inevitable material loss.

[0004] In actual operation, due to differences in the mechanical state, tension control accuracy, and physical properties of the paper rolls at the left and right workstations, the remaining length after each roll change often varies, leading to a further increase in the total amount of material waste. Therefore, accurately measuring the remaining length of the paper rolls at the left and right workstations is a prerequisite for achieving quantitative control, optimizing process parameters, and reducing unnecessary waste. However, existing methods for measuring the remaining length of the paper rolls rely on a reference object of a specific length or a measuring tape. Furthermore, manual pulling of the paper rolls can result in the remaining paper rolls not being straightened, leading to a measurement error as high as 4.76%, and an average measurement time exceeding 5 minutes per measurement, resulting in low overall measurement efficiency and inaccuracy.

[0005] After prolonged operation, the braking mechanisms of the left and right workstations will exhibit differences in their mechanical condition. This difference leads to variations in the actual consumption rate of the left and right paper rolls, even when the same contact diameter is set, resulting in uneven remaining paper lengths. Traditional methods rely on manual experience for adjustment, which can lead to inconsistent lengths even after initial adjustments due to low precision and excessive repetitions, resulting in significant unnecessary cost losses.

[0006] Meanwhile, the timing of cutting the paper roll also relies on manual judgment, with staff setting a fixed value based on historical experience or rough experiments. The actual consumption of paper rolls varies and is affected by various factors. A fixed value based on experience cannot adapt to these dynamic changes, resulting in large random fluctuations in the actual remaining length. This can lead to problems such as excessive remaining paper rolls and high waste costs.

[0007] Therefore, to address the issues of manual measurement of remaining paper rolls, which is prone to errors, and the inefficiency of adjustment based on experience, a rapid measurement and intelligent adjustment method based on weight conversion is needed to significantly improve measurement and adjustment efficiency and accuracy, and to achieve standardized operations. Summary of the Invention

[0008] The purpose of this invention is to provide a method, system, and storage medium for rapid measurement and adjustment of remaining paper volume in a YF71 automatic paper changer, in order to solve the technical problems in the prior art where the means of measuring remaining paper volume are outdated, resulting in low accuracy, and the adjustment operation relies on manual experience and lacks standardized procedures, leading to poor efficiency and high risk of material waste.

[0009] To achieve the above objectives, the present invention provides a method, system, and storage medium for rapid measurement and adjustment of remaining paper roll quantity, comprising:

[0010] Obtain the remaining length of the paper tray at the left station and the remaining length of the paper tray at the right station; Calculate the deviation between the remaining paper length of the left station and the remaining paper length of the right station; Determine whether the deviation value exceeds a preset range; If the deviation value is determined to exceed the preset range, the braking mechanism is adjusted to the reference position; Construct a brake mechanism control model, and input the deviation value into the brake mechanism control model to obtain the nut rotation angle; The brake mechanism is adjusted according to the rotation angle of the nut to obtain the remaining length of the paper disc in the left and right workstations after adjustment. The fine-tuning deviation is obtained based on the adjusted remaining lengths of the paper trays at the left and right workstations. The diameter of the remaining amount of the target paper roll is obtained based on the fine-tuning deviation, and precise adjustment is made based on the diameter of the remaining amount of the target paper roll. If the deviation value is determined to be within the preset range, the fine-tuning deviation amount is obtained based on the remaining length of the paper disc at the left station and the remaining length of the paper disc at the right station, and the process returns to the step of obtaining the diameter of the remaining amount of the target paper disc based on the fine-tuning deviation amount, and making precise adjustments based on the diameter of the remaining amount of the target paper disc.

[0011] Optionally, obtaining the remaining length of the paper roll at the left station and the remaining length of the paper roll at the right station includes: Obtain the fixed parameters of the paper roll according to formula (A): (A) in, To fix the parameters for the paper roll, For standard reference length, This refers to the actual width of the paper roll. This refers to the weight per unit area of ​​the paper roll. The remaining length of the roll of paper is obtained according to formula (B): (B) in, This is the remaining length of the paper roll. This is the weight of the paper roll sample.

[0012] Optionally, a brake mechanism control model is constructed, and the deviation value is input into the brake mechanism control model to obtain the nut rotation angle, including: Set up a dataset of deviation values; Take the i-th deviation value in the deviation value dataset as the initial deviation value, and obtain the adjustment angle corresponding to the initial deviation value; Adjust the corresponding nut rotation angle according to the preset angle step size; Obtain the deviation values ​​between the adjusted remaining length of the paper disc at the left station and the remaining length of the paper disc at the right station; Determine whether the deviation value is within a preset range; If the deviation value is determined to be outside the preset range, return to the previous step and adjust the corresponding nut rotation angle according to the preset angle step size; If the deviation value is determined to be within a preset range, the initial deviation value and the cumulative adjustment value of the nut rotation angle are added to the fitted dataset; Determine whether the angle adjustment for each deviation value in the deviation value dataset has been completed; If it is determined that the angle adjustment for each deviation value in the deviation value dataset has not been completed, i is incremented by 1, and the process returns to the step of taking the i-th deviation value in the deviation value dataset as the initial deviation value and obtaining the adjustment angle corresponding to the initial deviation value. Once it is determined that the angle adjustment for each deviation value in the deviation value dataset has been completed, the fitting data is obtained. Based on the fitted dataset, a braking mechanism control model is obtained by fitting a linear regression model. The deviation value is input into the brake mechanism control model, and the nut rotation angle is obtained according to formula (C): (C) in, The rotation angle of the nut. For regression coefficients, This is the deviation value. This is the intercept.

[0013] Optionally, the fine-tuning deviation is obtained based on the adjusted remaining length of the paper rolls at the left and right workstations, including: The current remaining length is obtained according to formula (D): (D) in, This represents the current remaining length. The remaining length of the paper tray at the left workstation after adjustment. The remaining length of the paper tray at the right workstation after adjustment; The fine-tuning deviation is obtained according to formula (E): (E) in, To fine-tune the deviation, The remaining length of the target.

[0014] Optionally, the diameter of the remaining amount of the target roll paper is obtained based on the fine-tuning deviation, and precise adjustment is performed based on the diameter of the remaining amount of the target roll paper, including: Construct a target diameter calculation model and obtain the target remaining paper diameter according to formula (F): (F) in, The diameter of the remaining paper roll is the target diameter. The outer diameter of the paper roll. For the thickness of the paper roll, This is the deviation value after coarse adjustment; The diameter of the target roll of paper remaining is precisely adjusted by inputting it into the device.

[0015] On the other hand, the present invention also provides a rapid measurement and adjustment system for the remaining amount of paper rolls, the adjustment system comprising: The data acquisition module collects the weight of the remaining rolls of paper from two sets of data. The data processing module calculates the remaining length and deviation value of the remaining roll of paper; The mechanical control module, including a braking mechanism, is used to receive signals from the processor and adjust the rotation angle of the nut. The electrical control module receives signals from the processor to control the paper roll speed and cut the paper roll. The processor is used to acquire the rotation angle of the nut and transmit the rotation angle of the nut to the mechanical control module. The processor is also used to acquire the diameter of the remaining paper roll and input the diameter of the remaining paper roll into the electrical control module. The processor is used to connect the data acquisition module, the data processing module, the mechanical control module, and the electrical control module. The processor is configured to perform any of the methods described above.

[0016] On the other hand, the present invention also provides a braking mechanism for an automatic paper roll changing machine, comprising: The braking assembly includes a brake lever, a tension spring, and an adjustable assembly. The brake lever is rotatably mounted on the machine body and connected to brake pads. The brake pads are in contact with the brake wheel to generate braking pressure to control the paper pressure on the control disc. One end of the tension spring is connected to the free end of the brake lever, and the other end is connected to the adjustable assembly, so that the brake lever generates an adjustable preload. A connecting rod, the two ends of which are respectively connected to the free end of the brake lever and the swing arm; A swing arm, one end of which is rotatably mounted on the equipment, has a roller mounted on its free end. The brake lever drives the swing arm to swing through the connecting rod, which is used to characterize the thickness change of the brake pads based on the movement of the roller.

[0017] Optionally, the automatic paper changer braking mechanism also includes an adjustable support: One end of the connecting rod is connected to the brake rod via an adjustable support, which is used to adjust the rod length from the connection point of the connecting rod and the brake rod to the connection point of the connecting rod and the swing arm.

[0018] Optionally, the automatic paper changer braking mechanism further includes a pre-tensioning component for applying prestress to the connecting rod to ensure that the connecting rod and the brake rod fit tightly together; The pretensioning assembly includes an adjustable limit block, a compression spring, and a limit seat. The limit seat is fixed to the equipment and is connected to the compression spring. The compression spring is connected to the adjustable limit block.

[0019] In another aspect, the present invention also provides a computer-readable storage medium storing instructions that, when executed by a processor, implement any of the methods described above.

[0020] The beneficial effects of this invention are: This invention provides a method for rapid measurement and adjustment of remaining paper volume in a YF71 automatic paper changing machine. Its core principle is to integrate weight conversion measurement with model-based step-by-step adjustment, achieving precision and standardization in the measurement and adjustment process. Specifically, it includes: This invention is based on the principle that the weight per unit length of paper rolls is constant. It uses an electronic balance to weigh the remaining paper roll sample and automatically converts the weight into length data using preset material parameters. This method reduces measurement error to less than 1% and shortens the measurement time to less than 2 minutes. By replacing manual visual inspection with objective measurement statistics, it solves the problems of low measurement accuracy and efficiency, providing a reliable data foundation for subsequent adjustments.

[0021] Meanwhile, in response to the problem of uneven remaining paper on the left and right sides, this invention uses a linear regression model established by actual measurement data to guide maintenance personnel to complete the standardized adjustment of the brake mechanism in one go, quickly achieve tension balance between the left and right work positions, and control the difference in remaining length between the left and right work positions within the ideal threshold of ±5m, which greatly improves the adjustment accuracy and efficiency.

[0022] In the electrical fine-tuning stage, this invention constructs a geometric model to accurately convert the remaining length deviation to be adjusted into equipment control parameters, namely the diameter of the target remaining paper roll. By modifying the system settings, control is achieved, and the deviation between the total remaining length and the process target is controlled within ±1m, thereby achieving cost control and avoiding material waste.

[0023] In summary, compared to the traditional work model that relies on personal experience and repeated trial and error, this invention constructs a standardized workflow driven by data and guided by models, making up for the process deficiencies from measurement to decision-making and final execution. Precise control significantly reduces the paper breakage rate, effectively reduces secondary waste caused by improper adjustments, realizes intelligent measurement and adjustment of remaining paper rolls, and significantly improves efficiency. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 A flowchart of a method for rapid measurement and adjustment of remaining paper quantity in a YF71 automatic paper changing machine according to an embodiment of the present invention; Figure 2 A paper roll parameter survey form according to one embodiment of the present invention; Figure 3 A flowchart illustrating the adjustment of a braking mechanism to a reference position according to an embodiment of the present invention; Figure 4 A diagram of a braking mechanism device according to an embodiment of the present invention; Figure 5 This is a flowchart illustrating the process of obtaining the rotation angle of a nut according to one embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures 1-Passing wheel; 2-Swing rod; 3-Eccentric wheel; 4-Connecting rod; 5-Adjusting nut; 6-Butterfly spring assembly; 7-Locking nut; 8-Brake lever; 9-Tension spring; 10-Nut; 11-Adjustable limit block; 12-Compression spring; 13-Limit seat. Detailed Implementation

[0026] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0027] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. In the embodiments of this application, certain existing industry solutions such as software, components, and models may be mentioned. These should be considered exemplary, intended only to illustrate the feasibility of implementing the technical solution of this application, and do not imply that the applicant has already used or necessarily used such solutions.

[0028] like Figure 1 The diagram shows a flowchart of a method for rapidly measuring and adjusting the remaining paper quantity in an automatic paper changing machine according to the present invention. Figure 1 The measurement and adjustment method includes the following steps: In step S10, the remaining length of the paper roll at the left station and the remaining length of the paper roll at the right station are obtained; In step S11, the deviation between the remaining paper length of the left station and the remaining paper length of the right station is calculated; In step S12, it is determined whether the deviation value exceeds the preset range; In step S13, if the deviation value is determined to be outside the preset range, the braking mechanism is adjusted to the reference position. In step S14, a brake mechanism control model is constructed, and the deviation value is input into the brake mechanism control model to obtain the nut rotation angle. In step S15, the brake mechanism is adjusted according to the nut rotation angle and restarted to obtain the remaining length of the paper disc on the left station and the remaining length of the paper disc on the right station after adjustment. In step S16, the fine-tuning deviation is obtained based on the remaining length of the paper disc at the left station and the remaining length of the paper disc at the right station after adjustment. In step S17, the diameter of the remaining amount of the target paper roll is obtained based on the fine adjustment deviation, and precise adjustment is made based on the diameter of the remaining amount of the target paper roll. In step S18, if the deviation value is determined to be within the preset range, the fine adjustment deviation is obtained based on the remaining length of the paper disc at the left station and the remaining length of the paper disc at the right station, and the process returns to the step of obtaining the diameter of the remaining amount of the target paper disc based on the fine adjustment deviation and making precise adjustments based on the diameter of the remaining amount of the target paper disc.

[0029] In such Figure 1 The method described requires first clarifying the basic workflow of the YF71 automatic paper changer to facilitate understanding the implementation scenarios of subsequent measurement and adjustment methods. The YF71 automatic paper changer employs a left- and right-rotating dual-station structure. When the outer diameter of the working paper roll at the left station decreases to the preset contact diameter, the left station decelerates while the right station accelerates until their rotational speeds are synchronized. At this point, the system triggers a splicing action, bonding the end of the new paper roll at the right station to the old paper roll at the left station. After splicing, the entire changer automatically rotates 180° and cuts the old paper roll at the left station, allowing the right station, now fitted with new paper, to rotate back to its original left station position to continue feeding paper. Simultaneously, the original left station rotates to its original right station position, where the operator removes the remaining empty roll and replaces it with a new full roll, becoming a new standby station. This station rotation and alternation ensures continuous production.

[0030] After clarifying the basic workflow of the YF71 automatic paper changer, step S10 is used to obtain the remaining paper length at the left and right workstations. Specifically, in this embodiment, a complete database of basic paper parameters can be established first through systematic data acquisition and structured processing. For different grades of paper, key information such as material name and unique material code is comprehensively collected and compiled into a "Paper Parameter Survey Form," such as... Figure 2 As shown in the table. The core of this table lies in the fact that the physical specifications of the paper rolls associated with the material codes are used to obtain the fixed parameters of the paper rolls through a unified mathematical model, that is, the fixed parameters of the paper rolls are obtained according to formula (A): (A) in, To fix the parameters for the paper roll, For standard reference length, This refers to the actual width of the paper roll. This refers to the weight per unit area of ​​the paper roll. The "Paper Roll Parameter Survey Form" is uploaded to the data management system. Using a barcode scanner, the barcode on the paper roll is scanned, and the system automatically identifies the code and instantly retrieves all corresponding pre-stored data from the database. This step achieves a seamless conversion from physical materials to digital information, transforming previously scattered and static material information into a structured, dynamic data stream that can be accessed in real-time and automatically. This not only greatly improves the efficiency and accuracy of data preparation but also provides crucial initial data support and decision-making basis for subsequent precise measurements based on weight conversion and data-driven intelligent adjustments.

[0031] Next, collect the remaining paper rolls generated after splicing at the left and right workstations from the dedicated waste paper bins below the YF71 equipment. To ensure that subsequent weighing completely covers all paper and avoids missing fragments, the collected fluffy paper rolls need to be simply shaped, usually by manually kneading them into balls for pretreatment. Using a high-precision electronic balance with a sensitivity of 0.01g, independently weigh the "JZ6BC301" model paper roll samples from the two workstations, accurately measuring their weight values. Record the weight of the paper roll sample from the left workstation as W1 = 16.90g and the weight of the paper roll sample from the right workstation as W2 = 12.61g.

[0032] Finally, the weights of the paper samples from the left and right workstations are entered into the data management system, which then automatically matches the fixed parameters. The remaining paper lengths for the left and right workstations are obtained using formulas (B) to (C): (B) (C) Where W1 is the weight of the paper sample from the left station and W2 is the weight of the paper sample from the right station. To fix the parameters for the paper roll, The remaining length of the paper roll at the left workstation is... , This refers to the remaining length of the paper tray at the right workstation. .

[0033] Step S11 is used to calculate the deviation between the remaining paper lengths of the left and right workstations. Specifically, in this embodiment, the deviation between the remaining paper lengths of the left and right workstations can be obtained according to formula (D): (D) in, This represents the deviation between the remaining paper length of the left station and the remaining paper length of the right station, i.e. , This represents the remaining length of the paper roll on the left workstation. This represents the remaining length of the paper roll at the right workstation.

[0034] Step S12 is used to determine whether the deviation value exceeds a preset range. Specifically, in this embodiment, the preset range can be set to 5m. At that time, the system automatically determines that the remaining paper level on the device is in a left-long-right-short state; when When the remaining paper on the roll of the device is approximately equal on both sides, it is determined that the remaining amount of paper is equal on both sides. If the device detects a disc deviation, it determines that the remaining paper level is shorter on the left and longer on the right. This determination process enables rapid and automatic identification and classification of disc deviations.

[0035] Step S13 is used to adjust the braking mechanism to the reference position when the deviation value exceeds the preset range. Specifically, in this embodiment, the deviation value between the remaining length of the paper disc at the left station and the remaining length of the paper disc at the right station exceeds the preset range, i.e. Therefore, as can be seen from the above determination method, the remaining paper quantity of the device is in a left-long-right-short state. After determining that the remaining paper quantity of the device is in a left-long-right-short state, in this embodiment, the specific method for adjusting the brake mechanism to the reference position can be of various forms known to those skilled in the art. In one embodiment of the present invention, step S13 may include, for example: Figure 3 The steps are shown. In this Figure 3 In this context, step S13 may include: In step S20, it is determined whether the braking reference distance is within the standard threshold. In step S21, if the braking reference distance is not at the standard threshold, it is determined whether the brake block liner is less than 3mm thick or damaged. In step S22, if it is determined that the brake pad liner is less than 3 mm thick or is damaged, the brake pad liner is replaced and the process returns to the step of determining whether the brake reference distance is within the standard threshold. In step S23, if it is determined that the brake block liner is not in a condition where the brake block liner thickness is less than 3mm or is damaged, the brake reference distance is adjusted. In step S24, if it is determined that the braking reference distance is at the standard threshold or after adjusting the brake reference distance, the compression spring 12 is adjusted so that the compression spring 12 is in a relaxed state.

[0036] In such Figure 3 The schematic diagram of the automatic paper changing machine brake mechanism shown in the method is as follows: Figure 4As shown. Steps S20 to S23 are used to adjust the braking reference distance so that it is within the standard threshold. Specifically, in this embodiment, the distance Y between the through wheel 1 and the fixed wheel, i.e., the braking reference distance, can be measured using calipers to determine whether the braking reference distance is within the standard threshold of 110-120mm. If the braking reference distance is not within the standard threshold, the wear condition of the brake pad liner is checked. If the brake pad liner is found to be less than 3mm thick or damaged, the old liner is removed, replaced with a new standard brake pad liner, and the braking reference distance is re-evaluated to ensure it is within the standard threshold. If the braking reference distance is not at the standard threshold, loosen the locking nut 7 and rotate the adjusting nut 5. Rotating the adjusting nut 5 counterclockwise moves the connecting rod 4 downwards, increasing the length from the connection point of the connecting rod 4 and brake lever 8 to the connection point of the connecting rod 4 and swing rod 2. This drives the swing rod 2 to swing upwards, lifting the roller 1 mounted on the free end of the swing rod 2, thus increasing the braking reference distance. Rotating the adjusting nut 5 clockwise moves the connecting rod 4 upwards, decreasing the length from the connection point of the connecting rod 4 and brake lever 8 to the connection point of the connecting rod 4 and swing rod 2. This drives the swing rod 2 to swing downwards, pressing down the roller 1 mounted on the free end of the swing rod 2, thus decreasing the braking reference distance. After adjusting the braking reference distance to the standard threshold, retighten the locking nut 7 to secure it. Steps S20 to S23 ensure that the most critical friction pair of the braking mechanism is in good working condition, which is the foundation for maintaining long-term stable braking performance. Simultaneously, by precisely controlling the braking reference distance, it is ensured that it recovers and stabilizes within the preset standard threshold range, thus achieving standardized operation of the equipment.

[0037] Step S24 is used to adjust the compression spring 12 to bring it into a relaxed state. Specifically, in this embodiment, after completing the static reference adjustment, the wheel 1 is gently pulled to stabilize the braking reference distance at 75mm, simulating the tension when the brake mechanism is working. In this state, the contact state between the two end surfaces of the compression spring 12 and the adjustable limit block 11 and the limit seat 13 is checked: if the two end surfaces of the compression spring 12 are precisely contacted with the adjustable limit block 11 and the limit seat 13 without gaps or excessive compression, it indicates that the compression spring 12 applies pressure to the connecting rod 4, making it tightly contacted with the brake lever 8, and the power transmission is smooth; if the two end surfaces of the compression spring 12 are not precisely contacted with the adjustable limit block 11 and the limit seat 13, the position of the adjustable limit block 11 should be finely adjusted while maintaining the braking reference distance at a constant 75mm, until the two end surfaces of the compression spring 12 are precisely contacted with the adjustable limit block 11 and the limit seat 13 in a relaxed state without gaps or excessive compression. Step S21 is used to eliminate the force transmission idle or abnormal preload in the working state of the mechanism, so as to ensure linear and accurate braking response.

[0038] Step S14 is used to construct a brake mechanism control model, inputting the deviation value into the brake mechanism control model to obtain the nut rotation angle. Specifically, in this embodiment, the specific method for obtaining the nut rotation angle can be of various forms known to those skilled in the art. In one embodiment of the present invention, step S14 may include, for example... Figure 5 The steps are shown. In this Figure 5 In this context, step S14 may include: In step S30, the fitted dataset for training the brake mechanism control model is obtained; In step S31, based on the obtained fitted dataset, the regression coefficients and intercepts in the brake mechanism control model are obtained, and the brake mechanism control model is constructed. In step S32, the deviation value is input into the brake mechanism control model to obtain the nut rotation angle.

[0039] In such Figure 5 In the method shown, step S30 is used to obtain the fitting dataset for training the brake mechanism control model. Specifically, in this embodiment, fitting data for a specific model of paper roll, such as JZ6BC301, can be collected through the following systematic experimental procedure: First, set an initial deviation value dataset {1m, 3m, 5m, …, 19m} ranging from 1m to 20m with 2m intervals. Second, iterate through the dataset, and for the i-th initial deviation value... As the initial input, adjustments are made in steps of 30°. Clockwise rotation of nut 10 tightens the brake, increasing the target braking pressure on the control disc paper force; counter-clockwise rotation loosens the brake, decreasing the target braking pressure on the control disc paper force. After each adjustment, steps S10 to S12 must be repeated to measure the remaining length of the paper discs on the left and right workstations after adjustment, and the actual deviation value must be calculated. . judge Check if it is within the preset ±5m range; if not, return and continue adjusting the nut angle in 30° increments and re-measure and judge, until... When the deviation value meets the condition, record the current initial deviation value. Cumulative adjustment value with nut rotation angle To ensure data stability, the above adjustment process was repeated three times for each initial deviation value, and the cumulative adjustment value of the nut rotation angle was taken during fitting. The average value is used as the final cumulative adjustment value for the nut rotation angle. and as a data pair ( , Add to the fitted dataset. After adjusting the current initial bias value, determine if all initial bias values ​​in the dataset have been traversed. If not, then... Increment by 1, return to process the next initial bias value; after considering all initial bias values ​​in the dataset that have been traversed, form a complete fitted dataset for linear regression. .

[0040] Step S31 is used to obtain the regression coefficients and intercepts in the brake mechanism control model based on the acquired fitted dataset, and to construct the brake mechanism control model. Specifically, in this embodiment, in order to establish... and The linear relationship can be fitted using univariate linear regression with the least squares method.

[0041] First, obtain the average initial deviation value and the average cumulative value of the nut rotation angle according to formulas (E) to (F): (E) (F) in, The mean of the initial deviation values. This represents the average of the final cumulative adjustment values ​​for the nut rotation angle. Number of test groups This is the initial deviation value. This is the final cumulative adjustment value for the nut rotation angle.

[0042] Secondly, obtain the sum of squared deviations and the sum of cross products according to formulas (G) to (H): (G) (H) in, The sum of squared deviations is used to measure the initial deviation. The degree of variation, The sum of the cross products is used to measure the initial deviation value. Cumulative value of nut rotation angle The degree of co-variation.

[0043] Finally, based on formulas (I) to (J), the regression coefficients and intercepts are: (I) (J) in, The regression coefficient represents the angle of nut rotation required to adjust for every 1m change in deviation. This is the intercept.

[0044] Each set of parameters in the fitted dataset corresponding to the JZ6BC30 model paper roll Substituting the values ​​into formulas (e) through (j) for calculation, the model parameters for this type of paper roll can be obtained: , And construct a control model for the braking mechanism based on formula (K): (K) in, The rotation angle of the nut. This is the deviation value.

[0045] Step S32 is used to input the deviation value into the brake mechanism control model to obtain the nut rotation angle. Specifically, in this embodiment, the deviation values ​​of the remaining paper lengths of the left and right workstations obtained in step S11 can be substituted into formula (L) to obtain the nut rotation angle: (L) in, The rotation angle of the nut. For regression coefficients, This represents the difference in remaining paper length between the left and right workstations. The value is the intercept. Therefore, the nut rotation angle is 140°. Based on this numerical command, maintenance personnel can rotate the right brake nut 140° clockwise to achieve efficient, one-time standardized coarse adjustment, significantly replacing the traditional trial-and-error process that relies on personal experience.

[0046] Step S15 is used to adjust the brake mechanism according to the nut rotation angle and restart the process to obtain the adjusted remaining paper lengths of the left and right workstations. Specifically, in this embodiment, after completing this adjustment, to objectively verify the coarse adjustment effect, the complete measurement process can be repeated to obtain the latest paper data. Maintenance personnel collect remaining paper samples from the left and right workstations again, perform standardized weighing, and obtain the adjusted remaining paper lengths of the left and right workstations through step S10. The adjusted remaining paper length of the left workstation... The remaining length of the paper tray at the right workstation after adjustment The new length difference is obtained based on the adjusted remaining lengths of the paper trays at the left and right workstations. The system automatically makes a judgment based on the same judgment rule. Since 0.6m is within the range of -5m to 5m, the system determines that the mechanical brake has reached a balanced state and meets the balance requirements, requiring no adjustment. Step S15 ensures that the mechanical adjustment result is reliable and meets the standards, providing a qualified prerequisite for seamlessly entering the subsequent electrical fine-tuning stage.

[0047] Step S16 is used to obtain the fine-tuning deviation based on the adjusted remaining lengths of the left and right station paper trays. Specifically, in this embodiment, to ensure conservative calculation and the effectiveness of the adjustment, the system can automatically select the shorter of the two lengths as the representative value of the current overall remaining length. That is, the adjusted remaining lengths of the left and right station paper trays obtained in step S14 are used to obtain the current remaining length according to formula (M): (M) in, The current remaining length is 17.9m. The remaining length of the paper tray at the left workstation after adjustment. The remaining length of the paper roll at the right workstation after adjustment. Next, the target remaining length preset in the process is compared with the current value, and the fine-tuning deviation is obtained according to formula (N): , (N) in, The deviation of 11.9m is used for fine-tuning and serves as the direct basis for subsequent precise electrical settings. The target remaining length is the remaining paper length preset in the process before adjustment.

[0048] Step S17 is used to obtain the diameter of the remaining paper roll of the target roll based on the fine-tuning deviation, and to make precise adjustments based on the diameter of the remaining paper roll of the target roll. Specifically, in this embodiment, after obtaining the fine-tuning deviation in step S16, it can be converted into electrical control parameters that the equipment can execute. Based on the geometric principle that the area consumed by the roll is equal to the difference in the area of ​​the concentric rings, this invention constructs a precise conversion model from length to diameter. The roll of paper is considered as a solid cylinder, and the total volume of paper consumed can be equivalent to the area of ​​a concentric ring multiplied by a constant thickness. Therefore, the diameter of the remaining paper roll of the target roll is obtained according to formula (O): , (O) in, The diameter of the remaining paper roll is the target diameter. , The outer diameter of the paper roll. For the paper roll thickness, both the outer diameter and thickness of the paper roll are fixed parameters. This is for fine-tuning the deviation.

[0049] After calculating the target diameter parameters using this model, the final parameter execution and verification phase begins. Maintenance personnel will then use the system to obtain the target... The core electrical parameters are directly input into the control system of the YF71 machine to complete the precise setting.

[0050] Step S18 is used to obtain the fine-tuning deviation amount based on the remaining length of the paper disc at the left and right workstations, provided that the deviation value does not exceed the preset range. Then, it returns to the previous step of obtaining the diameter of the remaining target paper disc based on the fine-tuning deviation amount and performing precise adjustment based on the diameter of the remaining target paper disc. Specifically, in this embodiment, the remaining paper discs generated after splicing at the left and right workstations can be collected from a dedicated waste paper bin below the YF71 equipment. The weights of the paper disc samples at the left and right workstations (W1 = 13.92g and W2 = 13.05g) are used to obtain the deviation values ​​of the remaining lengths of the paper discs at the left and right workstations using formulas (B) to (D). .because Therefore, the system determines that the mechanical brake has reached a balanced state and no mechanical adjustment is needed. If the deviation value does not exceed the preset range, the remaining lengths of the paper trays at the left and right workstations after coarse adjustment are the same as the remaining length of the paper tray at the left workstation obtained in step S18. and the remaining length of the paper roll at the right workstation Finally, return to steps S16 and S17 to obtain the diameter of the target remaining paper roll, and make precise adjustments based on the diameter of the target remaining paper roll.

[0051] To confirm the overall effectiveness of this adjustment, a final complete measurement verification was performed. The left and right workstations were measured again. The measured results were: the remaining length of the left workstation was 8.2m, and the remaining length of the right workstation was 7.8m. This data shows that after the two-stage standardized operation of mechanical adjustment and electrical fine-tuning, the remaining lengths of the left and right workstations were not only balanced but also extremely close to the pre-set target value of 8m. In terms of measurement and adjustment efficiency, the average total time decreased from 31.7 minutes using the traditional method to 10.5 minutes, an efficiency improvement of 202%, achieving a leapfrog improvement. In terms of measurement and adjustment accuracy, the measurement accuracy decreased from an error of over 4.76% using the traditional reference method to within 1%, significantly enhancing data reliability. Adjustment accuracy, achieved through electrical fine-tuning, ensured that the difference between the remaining length and the target value was ≤1m, significantly increasing the adjustment pass rate and greatly reducing the proportion requiring secondary adjustments, effectively improving the problems of "low pass rate and high rebound rate".

[0052] On the other hand, the present invention also provides a system for rapid measurement and adjustment of remaining paper roll quantity, specifically, which may include a data acquisition module, a data processing module, a processor, a mechanical control module, and an electrical control module. The data acquisition module acquires two sets of remaining paper roll weights; the data processing module calculates the remaining length and deviation value of the remaining paper roll; the mechanical control module includes a signal processing unit, a rotary drive device, and a braking mechanism. The signal processing unit receives the nut rotation angle, analyzes and verifies it, and performs signal conversion. The rotary drive device connects the output shaft to the nut 10 on the brake mechanism via a coupling, and precisely rotates the nut 10 according to instructions to automatically adjust the tension spring preload. The brake mechanism receives the processor signal and adjusts the nut rotation angle. The electrical control module receives the processor signal to control the paper roll speed and cut the paper roll. The processor acquires the nut rotation angle and transmits it to the mechanical control module. The processor also acquires the remaining paper roll diameter and inputs it into the electrical control module. The processor connects the data acquisition module, data processing module, mechanical control module, and electrical control module. The processor is configured to execute any of the methods described in the rapid measurement and adjustment method for remaining paper roll volume.

[0053] To better address the technical problems of this invention, this invention employs a braking mechanism for an automatic paper roll changing machine: In the braking mechanism of an automatic paper changing machine, the brake pads are located inside the mechanism and are under continuous friction, making it impossible to measure their wear thickness online or visually observe them using conventional methods. Existing methods mainly rely on empirical periodic replacement or passive inspection after significant performance degradation, lacking real-time, quantitative monitoring of wear conditions. This makes it impossible to predictively adjust tension based on the actual wear of the brake pads, and also impossible to accurately assess the tension differences between the left and right workstations caused by uneven wear. Therefore, this invention updates the original braking mechanism, transforming brake pad wear into a visible external characteristic to solve the problem of difficult brake condition monitoring.

[0054] Structural Introduction (see attached document) Figure 4 ): The braking mechanism includes a braking assembly, comprising a brake lever 8, a tension spring 9, and an adjustable assembly. The brake lever 8 is rotatably mounted on the machine body and connected to brake pads. The brake pads are in contact with the brake wheel to generate braking pressure to control the paper force on the control disc. One end of the tension spring 9 is connected to the free end of the brake lever 8, and the other end is connected to the adjustable assembly.

[0055] The adjustable assembly includes an adjusting screw and a nut 10 connected to a tension spring 9. By rotating the nut 10, the position of the adjusting screw is changed, which pulls the tension spring 9 to actuate the brake lever 8, causing the brake lever 8 to generate an adjustable preload, thereby precisely converting the rotation angle of the nut into a change in the preload of the brake lever 8.

[0056] The two ends of the connecting rod 4 are connected to the free end of the brake lever 8 and the swing arm 2, respectively. One end of the swing arm 2 is rotatably mounted on the equipment, and the free end of the swing arm 2 is fitted with a roller 1. When the thickness of the brake pads on the brake lever 8 decreases due to wear, the free end of the brake lever 8 will produce a small downward displacement. The brake lever 8 drives the swing arm 2 to swing downward through the connecting rod 4, pressing down the roller 1 and reducing the braking reference distance. In this way, the change in brake pad thickness can be characterized by the movement of the roller 1, that is, by the change in the braking reference distance.

[0057] Adjustable support: One end of the connecting rod 4 is connected to the brake lever 8 via an adjustable support, used to adjust the length of the rod from the connection point of the connecting rod 4 and the brake lever 8 to the connection point of the connecting rod 4 and the swing arm 2. The adjustable support includes an adjusting nut 5, a butterfly spring assembly 6, and a locking nut 7. Since the angle between the connecting rod 4 and the brake lever 8 changes during movement, a butterfly spring assembly 6 is installed between the adjusting nut 5 and the locking nut 7 to accommodate angle changes and avoid stress concentration.

[0058] Pre-tensioning assembly: includes an adjustable limiting block 11, a compression spring 12, and a limiting seat 13. The limiting seat 13 is fixed to the equipment and is connected to the compression spring 12. The compression spring 12 and the adjustable limiting block 11 press against the connecting rod 4, ensuring that the connecting rod 4 remains tightly connected to the brake rod 8 in both static and dynamic states. Initially, the compression spring 12 is compressed, pushing the adjustable limiting block 11 against the connecting rod 4, ensuring that the connecting rod 4 remains tightly connected to the brake rod 8. When the equipment is working, when the roller 1 moves downward under the pressure of the paper roll and drives the connecting rod 4 downward, the adjustable limiting block 11 moves accordingly and further compresses the compression spring 12; at this time, the compression of the compression spring 12 decreases, and the pressure it exerts on the adjustable limiting block 11 decreases accordingly.

[0059] Due to the initial pressure, the adjustable limit block 11 maintains contact with the connecting rod 4 and provides a gradually decreasing pressure, ensuring a tight and continuous connection between the connecting rod 4 and the brake lever 8, thus maintaining the responsiveness and continuity of the mechanism's transmission throughout the entire working stroke. When the paper roll force decreases, the connecting rod 4 moves upward, and the increased pressure on the compression spring 12 is transmitted to the connecting rod 4 through the adjustable limit block 11. The connecting rod 4 experiences downward pressure while resetting upward, ensuring it remains in close contact with the brake lever 8, thereby achieving continuous and gapless transmission during operation.

[0060] This braking mechanism transforms the wear state of the brake pads, hidden inside the mechanism, into displacement changes that can be directly observed and measured externally. Combined with adaptive adjustment and pre-tightening components, it solves the problems of difficult brake status monitoring and unstable transmission clearance, achieving the technical requirements for precise measurement and adjustment based on this braking mechanism, and significantly improving maintenance efficiency and tension control accuracy.

[0061] In another aspect, the present invention also provides a computer-readable storage medium storing instructions that, when executed by a processor, implement any of the methods described in a method for rapid measurement and adjustment of remaining paper roll quantity.

[0062] The beneficial effects of this invention are: This invention provides a method for rapid measurement and adjustment of remaining paper volume in a YF71 automatic paper changing machine. Its core principle is to integrate weight conversion measurement with model-based step-by-step adjustment, achieving precision and standardization in the measurement and adjustment process. Specifically, it includes: This invention is based on the principle that the weight per unit length of paper rolls is constant. It uses an electronic balance to weigh the remaining paper roll sample and automatically converts the weight into length data using preset material parameters. This method reduces measurement error to less than 1% and shortens the measurement time to less than 2 minutes. By replacing manual visual inspection with objective measurement statistics, it solves the problems of low measurement accuracy and efficiency, providing a reliable data foundation for subsequent adjustments.

[0063] Meanwhile, in response to the problem of uneven remaining paper on the left and right discs, this invention uses a linear function model established by regression of measured data to guide maintenance personnel to complete the standardized adjustment of the brake mechanism in one go, quickly achieve tension balance between the left and right work positions, and control the difference in remaining length between the left and right work positions within the ideal threshold of ±5m, which greatly improves the adjustment accuracy and efficiency.

[0064] In the electrical fine-tuning stage, this invention constructs a geometric model to accurately convert the remaining length deviation to be adjusted into equipment control parameters, namely the diameter of the target remaining paper roll. By modifying the system settings, control is achieved, and the deviation between the total remaining length and the process target is controlled within ±1m, thereby achieving cost control and avoiding material waste.

[0065] The automatic paper changer's braking mechanism converts brake pad wear into measurable external displacement and ensures linear, backlash-free control transmission. This allows weight-based measurement data to be fused with high-precision mechanical state data, thereby constructing a precise braking mechanism control model and ultimately achieving one-time, data-driven standardized adjustment. Therefore, the measurement and adjustment method of this invention and the automatic paper changer's braking mechanism form an inseparable organic whole, jointly achieving the invention's objective of improving measurement and adjustment accuracy and efficiency.

[0066] In summary, compared to the traditional work model that relies on personal experience and repeated trial and error, this invention constructs a standardized workflow driven by data and guided by models, making up for the process deficiencies from measurement to decision-making and final execution. Precise control significantly reduces the paper breakage rate, effectively reduces secondary waste caused by improper adjustments, realizes intelligent measurement and adjustment of remaining paper rolls, and significantly improves efficiency.

[0067] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0068] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0069] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0070] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0071] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0072] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0073] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0074] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0075] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method of quickly measuring and adjusting the remaining amount of a roll paper, characterized by, The adjustment method comprises: acquiring the left work position paper remaining length and the right work position paper remaining length; calculating the deviation value of the left work position paper remaining length and the right work position paper remaining length; judging whether the deviation value exceeds the preset range; in the case where it is judged that the deviation value exceeds the preset range, adjusting the brake mechanism to the reference position; constructing a brake mechanism control model, inputting the deviation value into the brake mechanism control model to acquire the nut rotation angle; adjusting the brake mechanism according to the nut rotation angle to acquire the adjusted left work position paper remaining length and the adjusted right work position paper remaining length; acquiring the fine adjustment deviation amount according to the adjusted left work position paper remaining length and the adjusted right work position paper remaining length; acquiring the target paper remaining length diameter according to the fine adjustment deviation amount, and performing accurate adjustment according to the target paper remaining length diameter; in the case where it is judged that the deviation value does not exceed the preset range, acquiring the fine adjustment deviation amount according to the left work position paper remaining length and the right work position paper remaining length, and returning to perform the step of acquiring the target paper remaining length diameter according to the fine adjustment deviation amount, and performing accurate adjustment according to the target paper remaining length diameter.

2. The adjustment method of claim 1, wherein acquiring the left work position paper remaining length and the right work position paper remaining length comprises: acquiring the paper fixing parameter according to formula (A): ，（A） wherein, is the fixed parameter for the disc paper, is the standard reference length, is the actual width of the disc paper, is the weight per unit area of the disc paper; acquiring the paper remaining length according to formula (B): ，（B） wherein, is the remaining length of the roll, is the sample weight of the roll.

3. The adjustment method of claim 1, wherein constructing a brake mechanism control model, inputting the deviation value into the brake mechanism control model to acquire the nut rotation angle, comprises: setting a deviation value data set; taking the i-th deviation value in the deviation value data set as an initial deviation value, and acquiring the adjustment angle corresponding to the initial deviation value; adjusting the corresponding nut rotation angle according to the preset angle step; acquiring the deviation value of the adjusted left work position paper remaining length and right work position paper remaining length; judging whether the deviation value is within the preset range; in the case where it is judged that the deviation value is not within the preset range, returning to perform the step of adjusting the corresponding nut rotation angle according to the preset angle step; in the case where it is judged that the deviation value is within the preset range, increasing the initial deviation value and the nut rotation angle cumulative adjustment value to the fitting data set; judging whether the angle adjustment of each deviation value in the deviation value data set is completed; in the case where it is judged that the angle adjustment of each deviation value in the deviation value data set is not completed, increasing i by 1, and returning to perform the step of taking the i-th deviation value in the deviation value data set as an initial deviation value, and acquiring the adjustment angle corresponding to the initial deviation value; in the case where it is judged that the angle adjustment of each deviation value in the deviation value data set is completed, completing the acquisition of the fitting data; acquiring the brake mechanism control model through linear regression model fitting according to the fitting data set; inputting the deviation value into the brake mechanism control model, and acquiring the nut rotation angle according to formula (C): ，（C） wherein, is the nut rotation angle, is the regression coefficient, is the bias value, is the intercept.

4. The adjustment method of claim 1, wherein acquiring the fine adjustment deviation amount according to the adjusted left work position paper remaining length and the adjusted right work position paper remaining length comprises: acquiring the current remaining length according to formula (D): ，（D） wherein, is the current remaining length, is the adjusted left station paper roll remaining length, is the adjusted right station paper roll remaining length; acquiring the fine adjustment deviation amount according to formula (E): ，（E） wherein, is the fine adjustment deviation, is the target remaining length.

5. The adjustment method of claim 1, wherein, According to the fine adjustment deviation amount, the target paper roll remaining length diameter is obtained, and the fine adjustment is performed according to the target paper roll remaining length diameter, comprising: A target diameter calculation model is constructed, and the target paper roll remaining length diameter is obtained according to formula (F): ，（F） wherein, is the target disc paper remaining amount diameter, is the disc paper outer diameter, is the disc paper thickness, is the coarse adjustment deviation value; The target paper roll remaining length diameter is input into the device for accurate adjustment.

6. A quick measurement and adjustment system for the remaining amount of a roll paper, characterized by, The adjustment system comprises: A data acquisition module acquires two groups of remaining paper roll weights; A data processing module calculates the remaining paper roll remaining length and the deviation value; A mechanical control module comprises a brake mechanism for receiving processor signals and adjusting the nut rotation angle; An electrical control module receives processor signals for controlling the paper roll rotation speed and cutting off the paper roll; A processor is used to obtain the nut rotation angle, transmit the nut rotation angle to the mechanical control module, obtain the paper roll remaining length diameter, input the paper roll remaining length diameter into the electrical control module, and connect the data acquisition module, the data processing module, the mechanical control module and the electrical control module, and the processor is configured to perform the method of any one of claims 1 to 5.

7. A brake mechanism of a disc paper automatic replacing machine, characterized by comprising: Comprise: A brake assembly comprising a brake lever (8), a tension spring (9) and an adjustable assembly, the brake lever (8) is rotatably installed on the machine body and connected with the brake pad, the brake pad is attached to the brake wheel, and the brake lever (8) is used to generate brake pressure to control the paper tension, one end of the tension spring (9) is connected with the free end of the brake lever (8), and the other end is connected with the adjustable assembly, so that the brake lever (8) generates adjustable pre-tightening force; A connecting rod (4), both ends of the connecting rod (4) are connected with the free end of the brake lever (8) and the swing lever (2) respectively; A swing lever (2), one end of the swing lever (2) is rotatably installed on the device, and an over wheel (1) is installed at the free end of the swing lever (2), the brake lever (8) drives the swing lever (2) to swing through the connecting rod (4), and the thickness change of the brake pad is represented according to the movement of the over wheel (1).

8. The automatic replacing machine brake mechanism of the paper roll according to claim 7, characterized in that, Further comprising an adjustable support; One end of the connecting rod (4) is connected with the brake lever (8) through the adjustable support, and is used to adjust the rod length from the connecting point of the connecting rod (4) and the brake lever (8) to the connecting point of the connecting rod (4) and the swing lever (2).

9. The automatic replacing machine brake mechanism of the paper roll according to claim 7, wherein, Further comprising a pre-tightening assembly for applying pre-stress to the connecting rod (4) to make the connecting rod (4) closely contact with the brake lever (8); The pre-tightening assembly comprises an adjustable limiting block (11), a compression spring (12) and a limiting seat (13), the limiting seat (13) is fixed on the device, the limiting seat (13) is connected with the compression spring (12), and the compression spring (12) is connected with the adjustable limiting block (11).

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores instructions, and when the instructions are executed by the processor, the method of any one of claims 1 to 5 is realized.

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