CN114911212A - Data characterization method for filter stick circumference control - Google Patents

Data characterization method for filter stick circumference control Download PDF

Info

Publication number
CN114911212A
CN114911212A CN202210432991.5A CN202210432991A CN114911212A CN 114911212 A CN114911212 A CN 114911212A CN 202210432991 A CN202210432991 A CN 202210432991A CN 114911212 A CN114911212 A CN 114911212A
Authority
CN
China
Prior art keywords
circumference
filter stick
filter
control
circumferential
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210432991.5A
Other languages
Chinese (zh)
Inventor
宋金华
刘瑞东
柴武君
陈海涛
李锋
张青松
杨道剑
刘强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Tobacco Zhejiang Industrial Co Ltd
Original Assignee
China Tobacco Zhejiang Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Tobacco Zhejiang Industrial Co Ltd filed Critical China Tobacco Zhejiang Industrial Co Ltd
Priority to CN202210432991.5A priority Critical patent/CN114911212A/en
Publication of CN114911212A publication Critical patent/CN114911212A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0243—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults model based detection method, e.g. first-principles knowledge model
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24065—Real time diagnostics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Networks Using Active Elements (AREA)

Abstract

The invention discloses a data characterization method for filter stick circumference control, which comprises the following steps: 1) starting stage circumference verification; 2) verifying special working conditions, splicing and removing; 3) verifying the circular linearity; 4) process evaluation and verification; 5) and (5) periodically verifying. By the method, the control conditions of the filter stick circumference control system under different working conditions are measured and improved in a targeted manner, and particularly, fine control is performed on the periodic multi-dimensional verification and quality evaluation of the circumference control system, so that the product quality is ensured.

Description

Data characterization method for filter stick circumference control
Technical Field
The invention relates to a data characterization method for filter stick circumference control, and belongs to the technical field of circumference control system detection in cigarette filter stick production.
Background
In the tobacco industry of China, the filter stick forming process is an important part in the whole cigarette manufacturing process. The main generating elements of the filter stick comprise: acetate fiber tows, a plasticizer, forming paper and glue. The filter stick process task mainly comprises the following steps: opening and plasticizer application processes (tow unpacking and positioning, tow pre-tensioning, opening, plasticizer application), forming processes (tow strip forming, adhesive application, roll forming, lap glue application), and output transfer processes (cutting, transfer conveying, dishing, and solidification). Wherein, the forming is used as a more key and important link which directly influences the circumference of the filter stick; the circumference of the filter stick is an important physical index of a cigarette product, and the excessive fluctuation of the circumference of the filter stick can directly cause the problems of cigarette air leakage, filter tip falling, wrinkles at the joint part and the like of the cigarette, so the circumference of the filter stick is a key control index of the filter stick forming process and is a difficult point of control.
Therefore, as mentioned above, the stability and quality of the filter stick circumference control are both key links of the filter stick process, and are the basis of the stability of the physical indexes of the filter stick, and further the quality of the rolling link and the requirements of consumers are affected, so that the method is a main focus of the tobacco industry for researching the physical indexes of the filter stick and the process control thereof.
The machine types of the filter stick forming machine used in the domestic tobacco industry at present comprise single-channel type KDF2, KDF4, KDF6 and derivative machine types thereof, double-channel type DF10, domestic ZL28 machine types, and a principal machine type which is also KDF2 series and derivative machine types thereof. In view of the circumferential detection and control method, there are a pneumatic circumferential detection control method and an Optical Detection (ODM) control method. The air pressure type circumference detection control method is characterized in that the circumference of a filter stick is measured by an air pressure detection method, an air path is divided into a reference air pressure and a measurement air pressure, and when the filter stick passes through a measurement nozzle, the circumference of the filter stick is reflected by the amount of air passing through the measurement nozzle so as to be controlled. The Optical (ODM) detection control method is an optical diameter detection device for detecting the diameter of a filter stick by using an optical principle, comprises an ODM measurement converter, an assembly bracket, a computer-aided analysis processing system and the like, and mainly completes the tasks of monitoring the filter stick and correcting the diameter deviation. In the Optical (ODM) detection method, the detection error of the measuring device is caused by the dirt of an optical unit, so that the control of the physical index of the filter rod is influenced, and even unqualified filter rods are generated in serious conditions, so that the product quality accident is caused. The dirt of the ODM optical unit can cause the detection error of the measuring device, thereby influencing the control of the physical index of the filter strip, even causing the generation of unqualified filter rods when the filter strip is serious, and causing the product quality accident.
From the aspect of the circumference control mode in the existing filter stick manufacturing process, the KDF2 machine type is taken as the main machine type of the filter stick production in the existing tobacco industry, the circumference control mode is also mainly controlled by an operator manually, namely, the operator extracts a sample from a machine table, then uses a detector to measure data, and adjusts a circumference control module of a forming device according to the measured data, so as to achieve the purpose of controlling the circumference of the filter stick. In addition, because KDF2 forming machine set manufacture is long in the past, the structure is compact, the expandable space size is limited, and the installation space requirement of the more advanced filter stick circumference detection control device cannot be met.
Chinese patent publication No. CN202059983U discloses an online laser controller for circumference of filter stick and cigarette in 2011, 12/07, which displays the circumference value of the current filter stick and automatically adjusts the circumference of the filter stick on line. Chinese patent publication No. CN112890273A discloses an online dynamic cleaning device for filter sticks or tobacco rods 22/3/2021, but this scheme is only to solve the problem of cleaning filter rods, i.e. pre-cleaning filter rods before entering ODM, so that the filter rods have good cleaning effect, prevent frequent abnormal adjustment and no adjustment of ODM, improve the cleanliness of subsequent production system components and final products of the device, and improve the operation stability of the ODM measurement system of the forming machine.
In summary, in the current filter rod circumference quality control process, measurement and evaluation are extensive, scientificity needs to be improved, the fine research degree is not high, and the following limitations mainly exist: 1) the linear change condition of the circumference control process cannot be inspected; 2) the change conditions of the circumference under different working conditions, namely the accurate conditions of circumference change and control under the working conditions of equipment speed increasing, speed reducing, low speed, full speed and the like, cannot be inspected; 3) lack of scientific evaluation indexes aiming at the quality of the circumference control system; 4) influences under the states of operation aging, overhaul of equipment components and the like are not considered, and the periodical and multidimensional evaluation of key links aiming at circumference control is lacked.
In the tobacco industry, along with the improvement of the requirements of the whole cigarette process index, the requirements on the forming process and the product quality are increased day by day, so the stability and the quality evaluation of a circumference control system in the filter stick forming link become more and more important, and the exploration and the evaluation of periodic and multidimensional evaluation need to be carried out on the circumference control system, the blank of related aspects is made up, and the product quality is ensured and improved.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a data characterization method for filter stick circumference control, the control conditions of a filter stick circumference control system under different working conditions are measured and improved in a targeted manner by the method, and particularly, the periodic multi-dimensional verification and quality evaluation of the circumference control system are subjected to fine control, so that the product quality is ensured.
In order to achieve the above object, the present invention provides a data characterization method for filter rod circumference control, which is used for verifying the accuracy of circumference control under a fixed circumference control center value, and includes:
setting a circumference control center value under a rated vehicle speed;
sampling the filter sticks of the first batch, and detecting the circumference of the filter sticks of the first batch;
judging whether the circumference control under the circumference control center value is accurate or not based on the circumference of the first batch of filter sticks, and replacing the set circumference control center value by using the circumference of the first batch of filter sticks if the circumference control center value is not in the set threshold range;
and sampling the second batch of filter sticks, and detecting the circumference of the second batch of filter sticks.
Preferably, verifying the accuracy of the circumferential control at a fixed circumferential control center value comprises:
and if the mean value of the circumferential detection of the second batch of filter sticks is within the range of +/-0.05 mm of the circumferential control center value and the circumferential detection of the second batch of filter sticks is within the range of +/-0.15 mm of the circumferential control center value, judging that the accuracy of the circumferential control is qualified.
Preferably, verifying the steady state condition of control of the circumference of the filter rod during the start-up phase comprises:
emptying the filter stick on the outlet channel of the filter stick forming machine;
in the starting stage, the eliminating quantity of the beam frame and the drum wheel is set;
continuously sampling in sections at the outlet of the outlet channel;
and (4) carrying out filter stick circumference detection through an off-line detection instrument to obtain the circumference mean value and the circumference standard deviation of the filter stick.
Preferably, based on the control map, it is determined whether the control of the filter rod circumference has reached a steady state condition.
Preferentially, verifying the control change condition of the circumference of the filter stick before and after the bobbin paper splicing comprises the following steps:
sampling the filter stick before splicing the formed bobbin paper and the filter stick after splicing the formed bobbin paper;
carrying out double-sample T inspection and double-square-difference inspection on the circumference of the filter stick before splicing the formed bobbin paper and the circumference of the filter stick after splicing the formed bobbin paper;
verifying the circumferential change condition of the filter stick with the removed adhesive section, comprising the following steps:
and sampling the bonding section, and detecting the circumference of the filter stick without the bonding section to obtain a circumference single-value detection value.
Preferentially, in the verification of the control change conditions of the filter rod circumferences before and after the bobbin paper splicing, if the P value is greater than 0.05, the control change conditions of the filter rod circumferences before and after the bobbin paper splicing are judged to have no significant difference;
and in the verification of the circumferential change condition of the filter stick with the removed filter stick branches in the bonding section, if the circumferential single-value detection value is within the range of +/-0.15 mm of the circumferential control center value, the circumferential control of the filter stick with the removed filter stick branches in the bonding section is judged to be stably controlled.
Preferably, verifying the linearity of the circumferential control comprises:
setting different circumferential gradients under a rated vehicle speed, wherein the different circumferential gradients comprise a circumferential control center value of-0.10, a circumferential control center value of-0.05, an original point of the circumferential control center value, a circumferential control center value of +0.05 and a circumferential control center value of +0.10, sampling the filter stick when the circumferential display value of the stick forming machine is within +/-0.15 mm of the corresponding circumferential gradient, detecting the circumference of the filter stick by an offline detector, and verifying the linear conformance and accuracy of the filter stick;
verifying the accuracy of circumference control under different circumference control center values, comprising:
obtaining the circumference of the filter stick if the linear correlation coefficient R 2 And if the detection result of the circumference of the filter stick is within the range of the circumference gradient +/-0.05 mm, judging that the accuracy of the circumference control meets the requirement.
Preferably, the evaluation process is for mass production capacity to meet product specification requirements, including:
sampling the filter stick at intervals during continuous production, detecting the circumference of the filter stick by an offline detector, and evaluating the process capability level of the circumference of the filter stick by using the process capability index Cpk.
Preferentially, in the mass production capacity meeting the product specification requirement in the evaluation process, if the process capacity index Cpk of the circumference of the filter stick is more than or equal to 1.3, the mass production capacity meeting the product specification requirement in the evaluation process is judged to meet the requirement.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any of the above.
The invention achieves the following beneficial effects:
the invention provides a periodic multi-dimensional detection and evaluation method for a filter stick circumference control system, wherein the periodicity can be developed once or after major repair of equipment according to time such as half a year or one year.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a line graph of the mean values of circumference and draw resistance during the start-up phase of the present invention;
FIG. 3 is a line graph of the circumference and the standard deviation of the draw resistance during the start-up phase of the present invention;
FIG. 4 is a line graph of the set point and mean values for the circular linearity verification of the present invention.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
It should be noted that, if there is a directional indication (such as up, down, left, right, front, and back) in the embodiment of the present invention, it is only used to explain the relative position relationship and motion situation between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if the description of "first" and "second", etc. is referred to in the present invention, it is used for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
A detection method for filter stick circumference control system and quality evaluation comprises the following steps:
1) and (3) circumference calibration verification, namely verifying the accuracy of circumference control under a fixed circumference control center value as follows: setting a circumference control center value at a rated vehicle speed, taking 20 filter rods in a first batch through calibration sampling, detecting the circumference of the filter rods to obtain a detection result, inputting the detection result into a circumference calibration interface of the machine, calibrating, and then newly sampling 50 filter rods in a second batch through an ODM calibration sampling function to detect the circumference. The circumference detection mean value is required to be within the range of +/-0.05 mm of the circumference control center value, and the circumference detection single value is required to be within the range of +/-0.15 mm of the circumference control center value.
2) And (3) verifying the starting time interval, namely verifying the control of the circumference of the filter stick in the starting stage and the condition of reaching the steady state, wherein the starting time interval comprises the following steps: clearing the filter stick on the outlet channel of the filter stick forming machine, setting the beam frame and the drum wheel according to the normal rejection amount in the starting stage, continuously sampling in sections at the outlet of the outlet channel, taking 15 to 25 groups of 10 to 30 filters in one group, detecting the data (circumference mean value and circumference standard deviation) of the circumference of the filter stick through an off-line detecting instrument, measuring the circumference control and reaching the steady state condition by referring to a control chart of the detection data, and requiring to reach the steady state in the set group number (for example, 15 groups) to ensure the product quality.
3) And verifying the control change condition of the circumference before and after the bobbin paper is spliced in a special time period, and verifying the circumference change condition of the removed adhesive section as follows:
verifying the control change condition of the circumference before and after the bobbin paper splicing: sampling 1-3 groups of samples within one minute before and after 20 pieces of the splicing section of the molding paper, wherein each group comprises 20 pieces of samples, carrying out double-sample T inspection and double-square difference inspection on the circumference of each group of samples before splicing and the circumference of each group of samples after splicing, and inspecting whether the samples have significant difference or not, wherein the P value is required to be more than 0.05;
verifying the circumferential variation condition before and after the elimination of the bonding section: in the normal operation process, sampling is carried out on the bonding sections (the sampling quantity can be set within a range of 3-15, and the actual set value is 15), the circumference of the filter stick without the bonding sections is detected, and the circumference single-value detection value is required to be within a range of +/-0.15 mm of the circumference control center value.
4) And (3) circumference linear verification, namely verifying the linear condition of circumference control, and verifying the accuracy of circumference control under different circumference control center values as follows: under the rated vehicle speed, different circumference gradients are set, and 5 to 7 groups can be set, for example, under the condition of different circumference gradients such as a circumference control center value of-0.10, a circumference control center value of-0.05, a circumference control center value as an original point, a circumference control center value of +0.05, a circumference control center value of +0.10 and the like, sampling is carried out when the circumference display value of the equipment is basically consistent with the corresponding circumference gradient, the circumference of the filter stick is detected by an off-line detection instrument, and the linear conformity and the accuracy of the filter stick are verified.
Sampling 20 to 50 filter rods into one group, and taking 1 to 5 groups if the linear correlation coefficient R is 2 And the circumference control accuracy is judged to meet the requirement if the circumference detection result of the filter stick is within the range of circumference gradient +/-0.05 mm and is more than or equal to 0.98.
5) Process evaluation verification, wherein the process characteristic evaluation is to evaluate the mass production capacity of the process meeting the product specification requirement by using a process capacity index Cpk, and according to the physical index requirement of the product technology, the process characteristic evaluation comprises the following steps: under a stable production operation condition, when continuous production is required, sampling is carried out at intervals within 8 hours, every 10 filters form a group, the group is more than or equal to 25 groups, the circumference of the filter stick is detected by an off-line detection instrument, the process capacity level of the circumference of the filter stick is evaluated by using the process capacity index Cpk, and the process capacity index Cpk of the circumference of the filter stick is required to be more than or equal to 1.3.
By adopting the detection scheme, the invention realizes unification and standardization of the application amount in the filter stick production process and detection methods, judgment standards and the like of related systems, and realizes the purposes of effective detection, precision control, periodic verification and the like of a filter stick circumference control system.
The control chart is a mature mathematical statistics technology in the prior art, and mainly judges whether the control of the circumference mean value machine SD is stable or not through the mathematical statistics technology. The T-test and double-variance test are also well established mathematical statistics applications in the prior art. P-value is also a mathematical statistical indicator well established in the art.
The present invention has the following effects:
1. the detection result has high accuracy and reliability;
2. the operation method and steps are clear, and the operability is strong;
3. the calculation method is clear and can be used for judging the control quality of each link of production;
4. the evaluation method is datamation and scientific.
1. Circumferential alignment
Setting the circumference as 19.85mm, taking 20 filter sticks according to the parameter ODM calibration sampling, detecting the circumference, inputting the detection result into a machine, calibrating, sampling 50 filter sticks by the ODM calibration sampling function, and detecting the circumference. The results are shown in the following table:
Figure 751477DEST_PATH_IMAGE002
from the above data, this calibration was considered valid and the results were satisfactory.
2. Start-up phase verification
Firstly, observing that the machine monitoring circumference is within the normal product requirement range when the machine is in normal production. After shutdown, the outlet channel was emptied, restarted, and sampled at the outlet channel in sequential time series, 20 in one set and 15 in another set. The amount of rejected flue gas is set 250 during the SEF startup phase. The sampling test results are shown in fig. 2 and 3.
3. Special period authentication
(1) Circumferential conditions before and after splicing
Sampling 3 groups of 20 samples in the front 20 samples and the one minute after splicing of the forming paper splicing section, carrying out double-sample T inspection and double-square difference inspection on the circumferences of the samples before splicing and the samples after splicing in each group, and inspecting whether the samples have obvious difference or not, wherein the inspection results are shown in the following table:
TABLE 1 comparison of circumference before and after splicing
Figure 13831DEST_PATH_IMAGE003
(2) The circumference of the bonding section before and after removing
In the normal operation process, the circumference setting value is 19.85mm, sampling is carried out by sampling the bonding segment (the settable range is 3-15, the actual setting value is 15), the filter stick containing the bonding segment is removed, the circumference of the residual filter stick is detected, and the detection result is shown in the following table:
Figure 476036DEST_PATH_IMAGE004
according to the data in the table, the circumference conditions before and after the bobbin paper bonding section is removed meet the requirements.
In conclusion, the circumferences of the filter rods before and after splicing are not obviously different. The circumference situation before and after splicing and removing meets the requirement.
4. Circular linearity verification
At the highest vehicle speed, circumferences (mm) are set to be 19.75, 19.80, 19.85, 19.90 and 19.95 respectively, and when the device display value is basically consistent with the set value, sampling is carried out (20), and the circumferences are detected, and the linear conformity and the accuracy are checked. The results are shown in the following table:
TABLE 3 results of the circular linearity and accuracy measurements
Figure 495945DEST_PATH_IMAGE005
Plotting according to the above data, as shown in FIG. 4, the difference absolute values between the calibrated ODM detection value and the laboratory detection value are both less than 0.05mm, and the circular linear correlation coefficient R 2 Is 0.989, corresponds to R 2 The requirement of not less than 0.98 is met, so that the device ODM meets the requirement on the accuracy and linearity of the circumference detection in the production process.
5. Process evaluation validation
Under the stable production running condition, sampling is carried out at intervals in the continuous production process within 8 hours, every 10 samples form one group, and the groups are more than or equal to 25 groups, the circumference is detected by an off-line detection instrument, and the circumference CPK value is calculated as follows:
Figure 75700DEST_PATH_IMAGE006
the present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may 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, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims (10)

1. A data characterization method for filter stick circumference control is characterized in that,
the method is used for verifying the accuracy of circumference control under a fixed circumference control center value, and comprises the following steps:
setting a circumference control center value under a rated vehicle speed;
sampling the filter sticks of the first batch, and detecting the circumference of the filter sticks of the first batch;
judging whether the circumference control under the circumference control center value is accurate or not based on the circumference of the first batch of filter sticks, and replacing the set circumference control center value by using the circumference of the first batch of filter sticks if the circumference control center value is not in the set threshold range;
and sampling the second batch of filter sticks, and detecting the circumference of the second batch of filter sticks.
2. A data characterisation method for filter rod circumference control according to claim 1,
verifying the accuracy of the circumference control under the fixed circumference control center value, comprising:
and if the mean value of the circumferential detection of the second batch of filter sticks is within the range of +/-0.05 mm of the circumferential control center value and the circumferential detection of the second batch of filter sticks is within the range of +/-0.15 mm of the circumferential control center value, judging that the accuracy of the circumferential control is qualified.
3. A data characterisation method for filter rod circumference control according to claim 1,
verifying the steady state control condition of the circumference of the filter stick in the starting stage, comprising:
emptying the filter stick on the outlet channel of the filter stick forming machine;
in the starting stage, the removing amount of the beam frame and the drum wheel is set;
continuously sampling in sections at the outlet of the outlet channel;
and (4) carrying out filter stick circumference detection through an off-line detection instrument to obtain the circumference mean value and the circumference standard deviation of the filter stick.
4. A data characterisation method for filter rod circumference control according to claim 3,
and judging whether the control of the circumference of the filter stick reaches a steady state condition or not based on the control chart.
5. A data characterisation method for filter rod circumference control according to claim 1,
verifying the control change condition of the filter stick circumference before and after bobbin paper splicing, comprising:
sampling the filter stick before splicing the formed bobbin paper and the filter stick after splicing the formed bobbin paper;
carrying out double-sample T inspection and double-square-difference inspection on the circumference of the filter stick before splicing the formed bobbin paper and the circumference of the filter stick after splicing the formed bobbin paper;
verifying the circumferential change condition of the filter stick with the removed adhesive section, comprising the following steps:
and sampling the bonding section, and detecting the circumference of the filter stick without the bonding section to obtain a circumference single-value detection value.
6. A data characterisation method for filter rod circumference control according to claim 5,
in the verification of the control change conditions of the filter rod circumferences before and after bobbin paper splicing, if the P value is greater than 0.05, judging that the control change conditions of the filter rod circumferences before and after bobbin paper splicing are not obviously different;
and in the verification of the circumferential change condition of the filter stick with the removed filter stick branches in the bonding section, if the circumferential single-value detection value is within the range of +/-0.15 mm of the circumferential control center value, the circumferential control of the filter stick with the removed filter stick branches in the bonding section is judged to be stably controlled.
7. A data characterisation method for filter rod circumference control according to claim 1,
verifying the linearity of the circular control, comprising:
setting different circumferential gradients under a rated vehicle speed, wherein the different circumferential gradients comprise a circumferential control center value of-0.10, a circumferential control center value of-0.05, an original point of the circumferential control center value, a circumferential control center value of +0.05 and a circumferential control center value of +0.10, sampling the filter stick when the circumferential display value of the stick forming machine is within +/-0.15 mm of the corresponding circumferential gradient, detecting the circumference of the filter stick by an offline detector, and verifying the linear conformance and accuracy of the filter stick;
verifying the accuracy of circumference control under different circumference control center values, comprising:
obtaining the circumference of the filter stick if the linear correlation coefficient R 2 And if the detection result of the circumference of the filter stick is within the range of the circumference gradient +/-0.05 mm, judging that the accuracy of the circumference control meets the requirement.
8. A data characterisation method for filter rod circumference control according to claim 1,
evaluating the mass production capacity of a process to meet product specification requirements, comprising:
sampling the filter stick at intervals during continuous production, detecting the circumference of the filter stick by an offline detector, and evaluating the process capability level of the circumference of the filter stick by using the process capability index Cpk.
9. A data characterisation method for filter rod circumference control according to claim 8,
in the mass production capacity meeting the product specification requirement in the evaluation process, if the process capacity index Cpk of the circumference of the filter stick is more than or equal to 1.3, the mass production capacity meeting the product specification requirement in the evaluation process is judged to meet the requirement.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 9.
CN202210432991.5A 2022-04-24 2022-04-24 Data characterization method for filter stick circumference control Pending CN114911212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210432991.5A CN114911212A (en) 2022-04-24 2022-04-24 Data characterization method for filter stick circumference control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210432991.5A CN114911212A (en) 2022-04-24 2022-04-24 Data characterization method for filter stick circumference control

Publications (1)

Publication Number Publication Date
CN114911212A true CN114911212A (en) 2022-08-16

Family

ID=82764695

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210432991.5A Pending CN114911212A (en) 2022-04-24 2022-04-24 Data characterization method for filter stick circumference control

Country Status (1)

Country Link
CN (1) CN114911212A (en)

Similar Documents

Publication Publication Date Title
CN110531033B (en) Method and device for monitoring online moisture measurement accuracy and moisture measurement system
CN102342582B (en) Verification method, verification system and calculation processor for detection precision of scan detection head
CN111213910B (en) Method for online detection of weight of reference rod and online indirect characterization of crimpness after opening
CN114911212A (en) Data characterization method for filter stick circumference control
CN108406442B (en) Grating scale performance detection method and system
CN116067625A (en) System and method for testing long-time wavelength stability of built-in light source of spectrometer
CN212391150U (en) Temperature sensor precision test system
CN211065023U (en) Ventilation rate apparatus calibration filter rod
CN113218812A (en) Method for detecting differential pressure pipeline of particle trap, related device and readable medium
WO2022211846A1 (en) System and method for dynamic signal processing for vacuum decay leak detection
CN105823431A (en) Optical fiber over-bending detection method
CN111175236A (en) Light path correction method and device for baseline drift in glove box type online spectral analysis
CN108226082B (en) Calibration method for damping response time of moisture meter
Pinto et al. Yarn-mass measurement with 1-mm-length samples
CN113971325B (en) Method for representing filter stick suction resistance through forming machine operation parameters
CN116499699B (en) Continuous wind tunnel pressure measurement test data monitoring and correcting method
Angelov Use of Control Charts for Quality Assurance of Automated Measurement Systems
CN115633800B (en) Method for detecting measurement performance of comprehensive cigarette test bench
CN118091407B (en) Method and device for testing insulation performance of engine stator
CN113834621B (en) Blade vibration fatigue test method and system, control device and storage medium
CN108823938B (en) Yarn evenness tester
Rucki Reduction of uncertainty in air gauge adjustment process
CN117446557A (en) Method, system and computer readable medium for diaphragm production
US7313486B2 (en) Apparatus and method for detecting a corrosive substance leak in a chemical composition analyzer
CN116007839A (en) Pressure gauge calibrating instrument

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination