CN102687910B - Method for controlling plasticizer sprinkling amount of cigarette filter stick forming machine - Google Patents
Method for controlling plasticizer sprinkling amount of cigarette filter stick forming machine Download PDFInfo
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- CN102687910B CN102687910B CN201210114672.6A CN201210114672A CN102687910B CN 102687910 B CN102687910 B CN 102687910B CN 201210114672 A CN201210114672 A CN 201210114672A CN 102687910 B CN102687910 B CN 102687910B
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- 239000004014 plasticizer Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 30
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 13
- 238000004458 analytical method Methods 0.000 claims abstract description 17
- 238000012417 linear regression Methods 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims description 73
- 230000001419 dependent effect Effects 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000000875 corresponding effect Effects 0.000 description 10
- 238000004886 process control Methods 0.000 description 10
- 229920006221 acetate fiber Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007619 statistical method Methods 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- OIGNJSKKLXVSLS-VWUMJDOOSA-N prednisolone Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 OIGNJSKKLXVSLS-VWUMJDOOSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The invention discloses a method for controlling the plasticizer sprinkling amount of a cigarette filter stick forming machine. The method is characterized in that calibration for a display value of F (mg/filter) is based, wherein the F stands for the plasticizer sprinkling amount of the cigarette filter stick forming machine; that a linear regression analysis method is founded, wherein the method analyzes a filter stick product hardness index and the plasticizer sprinkling amount; that a prediction interval of the linear analysis is combined; that different filter stick forming machine types, different filter stick products, different tow specifications and different tow manufacturers are targeted; and that a process controlling range (FL, FU)+-TF of the plasticizer sprinkling amount F is determined, to satisfy technical requirements of the filter stick product hardness index H, i.e. (M-3.0)%<=H<=(M+3.0)%.
Description
Technical Field
The invention relates to a process control method for the plasticizer content of a cigarette filter stick.
Background
In the quality requirements of physical indexes of filter stick forming products, the national tobacco agency promulgates 'cigarette process specifications' in 2003, the requirement of hardness is defined as 'design value +/-3.0%', namely the index range of the filter stick hardness H is (M-3.0)% to H ≦ M + 3.0)%; in the technical point of filter stick forming, the recommended application proportion P of the acetate fiber tow plasticizer is generally 4.0-12.0%, namely 4.0-12.0% of P. Relevant literature research shows that the hardness index of the filter stick product is obviously and positively correlated with the application ratio of the acetate fiber tow plasticizer; in the actual filter stick forming production process, the control range of the plasticizer application ratio is realized by adjusting the spraying amount of the plasticizer of the filter stick forming equipment.
According to the linear regression prediction analysis method, after the value of the independent variable X is given, the range of the value of the dependent variable Y can be predicted: for a given independent variable XiPredicted value Y of dependent variablei＝a+bXiInterval 1-alpha, prediction interval of dependent variable is Yi-δi≤Yi≤Yi+δiThe fluctuation range T of the simultaneous prediction interval is deltaiWhen is coming into contact with
Time T is minimal. The statistical method can be utilized to determine the process control range of the plasticizer spraying amount respectively aiming at different filter rod forming machine models, filter rod products, tow specifications and tow manufacturers so as to meet the requirement ofThe hardness index process requirement of the filter stick product.
Disclosure of Invention
The invention aims to realize the process control of the plasticizer content of the filter stick by utilizing a linear regression prediction analysis method and meet the process requirements of the hardness index of the filter stick product.
The purpose of the invention is realized by the following scheme:
a control method for the spraying amount of a plasticizer of a cigarette filter rod forming machine is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the steps of firstly determining a process control method of the plasticizer content of the cigarette filter stick, on the basis of calibrating a display value of the plasticizer spraying amount F (mg/filter) of the filter stick forming machine, determining a process control range of calibration deviation of the plasticizer spraying amount F (mg/filter) of the cigarette filter stick forming machine according to a control range of an average value of the hardness H of the filter stick and a linear regression analysis method of the plasticizer spraying amount F (mg/filter) of the filter stick, and combining prediction intervals of linear analysis respectively aiming at different filter stick forming machine models, filter stick products, tow specifications and tow manufacturers so as to meet the process requirements of hardness indexes of the filter stick products.
(1) The control range of the average value of the hardness H of the filter stick is as follows: if the index range of the hardness H of the filter stick is (M-3.0)% is more than or equal to H and less than or equal to (M + 3.0)%, the number of samples in each filter stick process test is n, and according to the normal distribution center limit theorem, the control range of the average value of the hardness of n filter sticks isWherein,
(2) filter rod forming machine toolCalibration deviation of plasticizer spraying amount F (mg/filter): according to the analysis of a linear regression prediction interval between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness of the filter stick, taking the spraying amount F (mg/filter) of the plasticizer as an independent variable X, taking the average value of the hardness of the filter stick as a dependent variable Y, and taking a regression equation of Y ═ a1+b1X; and the significance level P value of the regression equation is less than 0.05, which shows that the relation between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness of the filter stick is significant; then when
Time, the predicted interval fluctuation range T of the dependent variable Y valueHMinimum, corresponding to the minimum fluctuation range T of the independent variable plasticizer spraying amount FF＝TH/b1；
Before calibration, a recorder table displays the spraying amount F of the plasticizer, and 100 samples of the wet stick and 100 samples of the dry stick are weighed respectively as W1 and W2 in mg during calibration; the absolute amount W of the plasticizer contained in the actual single filter stick is (W1-W2)/100, the unit is mg, and the calculation result is accurate to an integer; upon completion of the test at F, W, if:
|F-W|＞TFadjusting the set value of the counter in a dialog window of a forming machine control computer to enable the filter rod forming machine to display F equal to W, and completing the calibration of the spraying amount of the plasticizer;
if:
|F-W|≤TFif the F value is not calibrated, the F value is not calibrated;
(3) control range of plasticizer spraying amount F (mg/filter) of a filter rod forming machine: according to the analysis of the linear regression prediction interval between the spraying amount of the plasticizer and the average value of the hardness of the filter stick, taking the average value of the hardness of the filter stick as an independent variable X, and then taking the value range of X asThe spraying amount F (mg/filter) of the corresponding plasticizer is a dependent variable Y, and the spraying amount F (mg/filter) of the corresponding plasticizer is X1、X2The Y value prediction intervals are respectively Y1-δ1≤Y1≤Y1+δ1、Y2-δ2≤Y2≤Y2+δ2And the control range of the spraying amount of the plasticizer is a continuous interval covered by the prediction interval: y is1-δ1≤Y≤Y2+δ2Is denoted by (F)L，FU) I.e. FL＝Y1-δ1，FU＝Y2+δ2；
And (3) combining the two contents to determine the process control range of the spraying amount of the plasticizer: (F)L，FU)±TF。
The process control of the plasticizer content comprises the following:
(1) establishing the control range of the average value of the hardness H of the filter stick: if the index range of the hardness H of the filter stick is (M-3.0)% is less than or equal to H and less than or equal to (M + 3.0)%, and the number of samples in each filter stick process test is n, the control range of the average value of the hardness of n filter sticks is
Wherein,
(2) establishment of calibration deviation for Filter rod-Forming machine plasticizer spray amount F (mg/filter): according to the analysis of a linear regression prediction interval between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness of the filter stick, taking the spraying amount F (mg/filter) of the plasticizer as an independent variable X, taking the average value of the hardness of the filter stick as a dependent variable Y, and taking a regression equation of Y ═ a1+b1X; and the significance level P value of the regression equation is less than 0.05, which shows that the relation between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness of the filter stick is significant; then when
Time, the predicted interval fluctuation range T of the dependent variable Y valueHMinimum, corresponding to the minimum fluctuation range T of the independent variable plasticizer spraying amount FF＝TH/b1This is taken as the calibration deviation of the plasticizer spray amount;
before calibration, a recorder table displays the spraying amount F of the plasticizer, and 100 samples of the wet stick and 100 samples of the dry stick are weighed respectively as W1 and W2 in mg during calibration; the absolute amount W of the plasticizer contained in the actual single filter stick is (W1-W2)/100, the unit is mg, and the calculation result is accurate to an integer. Upon completion of the test at F, W, if:
|F-W|＞TFadjusting the set value of the counter in a dialog window of a forming machine control computer to enable the filter rod forming machine to display F equal to W, and completing the calibration of the spraying amount of the plasticizer;
if:
|F-W|≤TFif the F value is not calibrated, the F value is not calibrated;
(3) the control range of the plasticizer spraying amount F (mg/filter) of the filter rod forming machine is established: according to the analysis of a linear regression prediction interval between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness H of the filter stick, taking the average value of the hardness of the filter stick as an independent variable X, and then taking the value range of X as
The spraying amount F (mg/filter) of the corresponding plasticizer is a dependent variable Y, and the spraying amount F (mg/filter) of the corresponding plasticizer is X1、X2The Y value prediction intervals are respectively Y1-δ1≤Y1≤Y1+δ1、Y2-δ2≤Y2≤Y2+δ2And the control range of the spraying amount of the plasticizer is a continuous interval covered by the prediction interval: y is1-δ1≤Y≤Y2+δ2Is denoted by (F)L，FU) I.e. FL＝Y1-δ1，FU＝Y2+δ2；
And (3) combining the two contents to determine the process control range of the spraying amount F of the plasticizer: (F)L，FU)±TF(ii) a Meanwhile, it should be clear that the upper and lower limits of the process control range of the plasticizer spraying amount corresponding to different filter stick forming machine models, filter stick products, tow specifications and tow manufacturers are different, so that the control of the filter stick forming machine on the hardness H of the filter stick products is guided.
Drawings
For a better understanding of the present invention, reference is made to the accompanying drawings.
FIG. 1 is a schematic view of the amount of plasticizer sprayed according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example (b):
before testing, materials such as acetate fiber tows, plasticizers and the like used in the testing are designated, after the calibration work of the plasticizer spraying amount displayed by the filter rod forming machine is completed, other equipment parameters of the filter rod forming machine are kept unchanged, F (mg/filter) is selected to be 33-878mg/filter, each gradient delta F is 5.0mg/filter fluctuation range, and 10 gradients are provided; adjusting the spraying amount of the plasticizer each time, sampling the filter stick samples after the production is stable, selecting 20 samples from each filter stick sample, and detecting the hardness index of the filter stick, wherein the process requirement of the hardness index of the filter stick is 87 +/-3.0%, and the test result is shown in table 1.
Table 1: filter stick plasticizer correlation process test statistical analysis result summary table
(1) Establishment of a regression equation: the process requirement of the hardness of the filter stick is 87 +/-3.0 percent, and theoretically, the process range of the average value of the hardness of 20 filter sticks is
The data in table 1 are obtained by performing correlation analysis on the relationship between the plasticizer spraying amount F (mg/filter) and the average value of the hardness of the filter stick, taking the plasticizer spraying amount F (mg/filter) as an independent variable X, taking the average value of the hardness of the filter stick as a dependent variable Y, and taking a regression equation of Y as 85.11+ 0.04762X; and the significance level P value of the regression equation is zero and is less than 0.05, which shows that the relation between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness of the filter stick is significant, and the right graph shows.
(2) Establishment of calibration deviation of plasticizer spray amount: and when
The prediction interval of the average value of the hardness of the dependent variable filter stick is 87.6778-87.8362, and the fluctuation range 2 delta is minimum: 2 δ -87.8362-87.6778-0.1584, i.e. THδ is 0.0792, corresponding to the minimum fluctuation range T of the independent variable plasticizer spraying amount FF0.0792/0.04762 ≈ 1.66 ≈ 2.0 as a calibration deviation of the plasticizer spray amount; when the calibrating work of the plasticizer spraying amount displayed by the filter rod forming machine is carried out, if | F-W | is more than 2.0, the set value of the counter is adjusted in a dialogue window of the forming machine control computer, so that the F of the value displayed by the filter rod forming machine is equal to W, and the calibrating work of the plasticizer spraying amount is finished; if the | F-W | is less than or equal to 2.0, the F value is not calibrated.
(3) Establishment of control range of plasticizer spraying amount: according to the analysis of the linear regression prediction interval between the spraying amount of the plasticizer and the average value of the hardness of the filter stick, taking the average value of the hardness of the filter stick as an independent variable X, and then taking the value range of X as
The spraying amount F (mg/filter) of the plasticizer is a dependent variable Y, and the prediction intervals of Y values corresponding to 86.33 and 87.67 are respectively 22.351-Y1≤29.906、52.050≤Y255.368, the control range of the plasticizer spraying amount is the continuous interval covered by the prediction interval: 22.351 is less than or equal to Y is less than or equal to 55.368 and is marked as (F)L，FU) I.e. FL＝22.351，FU＝55.368。
In summary, for a given filter rod forming machine type, tow specification, tow manufacturer and plasticizer, according to the process requirement of the filter rod hardness index, the process control range of the corresponding plasticizer spraying amount is as follows: (22.351, 55.368) ± 2.0mg/filter, retained to the integer number of (23, 55) ± 2 mg/filter.
Claims (3)
1. A method for adjusting the spraying amount of a plasticizer of a filter rod forming machine for cigarettes is characterized by comprising the following steps: the method comprises the following steps:
determining the content of the plasticizer of the cigarette filter stick, calibrating the display value of the plasticizer spraying amount F (mg/filter) of the filter stick forming machine, and determining the calibration deviation range of the plasticizer spraying amount F (mg/filter) of the cigarette filter stick forming machine respectively aiming at different filter stick forming machine models, filter stick products, tow specifications and tow manufacturers according to the range of the average value of the hardness H of the filter stick and the linear regression analysis method of the plasticizer spraying amount F (mg/filter) of the filter stick and the prediction interval of the linear analysis so as to meet the hardness index process requirements of the filter stick products.
2. The method for adjusting the spraying amount of the plasticizer of the filter rod forming machine for the cigarettes as claimed in claim 1, wherein:
(1) determining the average value range of the hardness H of the filter stick: when the index range of the hardness H of the filter stick is (M-3.0)% is more than or equal to H and less than or equal to (M + 3.0)%, and the number of samples in each filter stick process test is n, the average value range of the hardness of n filter sticks is according to the normal distribution center limit theorem <math>
<mrow>
<msub>
<mi>X</mi>
<mn>1</mn>
</msub>
<mo>≤</mo>
<mover>
<mi>H</mi>
<mo>‾</mo>
</mover>
<mo>≤</mo>
<msub>
<mi>X</mi>
<mn>2</mn>
</msub>
<mo>;</mo>
</mrow>
</math> Wherein,
(2) the calibration deviation of the plasticizer spray quantity F of the rod maker in mg/filter is determined: according to the analysis of a linear regression prediction interval between the spraying amount F of the plasticizer and the average value of the hardness of the filter stick, the spraying amount F of the plasticizer is taken as an independent variable X, the average value of the hardness of the filter stick is taken as a dependent variable Y, and the regression equation is that Y is a1+b1X; and the significance level P value of the regression equation should be less than 0.05, which shows that the relation between the spraying amount F of the plasticizer and the average value of the hardness of the filter stick is obviousThe method comprises the following steps of (1); then when
Time, the predicted interval fluctuation range T of the dependent variable Y valueHMinimum, corresponding to the minimum fluctuation range T of the independent variable plasticizer spraying amount FF＝TH/b1；
Before calibration, a recorder table displays the spraying amount F of the plasticizer, and 100 samples of the wet stick and 100 samples of the dry stick are weighed respectively as W1 and W2 in mg during calibration; the absolute amount W of the plasticizer contained in the actual single filter stick is (W1-W2)/100, the unit is mg, and the calculation result is accurate to an integer; upon completion of the test at F, W, if:
|F-W|＞TFadjusting the set value of the counter in a dialog window of a forming machine control computer to enable the filter rod forming machine to display F equal to W, and completing the calibration of the spraying amount of the plasticizer;
if:
|F-W|≤TFif the F value is not calibrated, the F value is not calibrated;
(3) determining the range of plasticizer spray F of the rod maker in mg/filter: according to the analysis of the linear regression prediction interval between the spraying amount of the plasticizer and the average value of the hardness of the filter stick, taking the average value of the hardness of the filter stick as an independent variable X, and then taking the value range of X as
The spraying amount F of the corresponding plasticizer is a dependent variable Y corresponding to X1、X2The Y value prediction intervals are respectively Y1-δ1≤Y1≤Y1+δ1、Y2-δ2≤Y2≤Y2+δ2The range of the spraying amount of the plasticizer is a continuous interval covered by the prediction interval: y is1-δ1≤Y≤Y2+δ2Is denoted by (F)L，FU) I.e. FL＝Y1-δ1，FU＝Y2+δ2；
Determining the range of the spraying amount of the plasticizer: (F)L，FU)±TF。
3. The method of claim 1, wherein: determining the plasticizer content includes the following:
(1) establishing the average value of the hardness H of the filter stick: if the index range of the hardness H of the filter stick is (M-3.0)% is less than or equal to H and less than or equal to (M + 3.0)%, and the number of samples in each filter stick process test is n, the control range of the average value of the hardness of n filter sticks is
Wherein,
(2) establishment of calibration deviation for Filter rod-Forming machine plasticizer spray amount F (mg/filter): according to the analysis of a linear regression prediction interval between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness of the filter stick, taking the spraying amount F (mg/filter) of the plasticizer as an independent variable X, taking the average value of the hardness of the filter stick as a dependent variable Y, and taking a regression equation of Y ═ a1+b1X; and the significance level P value of the regression equation is less than 0.05, which shows that the relation between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness of the filter stick is significant; then when
Time, the predicted interval fluctuation range T of the dependent variable Y valueHMinimum, corresponding to the minimum fluctuation range T of the independent variable plasticizer spraying amount FF＝TH/b1This is taken as the calibration deviation of the plasticizer spray amount;
before calibration, a recorder table displays the spraying amount F of the plasticizer, and 100 samples of the wet stick and 100 samples of the dry stick are weighed respectively as W1 and W2 in mg during calibration; the absolute amount W of the plasticizer contained in the actual single filter stick is (W1-W2)/100, the unit is mg, the calculation result is accurate to an integer number, and after the F, W test is completed, if:
|F-W|＞TFadjusting the set value of the counter in a dialog window of a forming machine control computer to enable the filter rod forming machine to display F equal to W, and completing the calibration of the spraying amount of the plasticizer;
if:
|F-W|≤TFif the F value is not calibrated, the F value is not calibrated;
(3) establishing a range of plasticizer spray amounts F (mg/filter) for a rod maker: according to the analysis of a linear regression prediction interval between the spraying amount F (mg/filter) of the plasticizer and the average value of the hardness H of the filter stick, taking the average value of the hardness of the filter stick as an independent variable X, and then taking the value range of X as
The spraying amount F (mg/filter) of the corresponding plasticizer is a dependent variable Y, and the spraying amount F (mg/filter) of the corresponding plasticizer is X1、X2The Y value prediction intervals are respectively Y1-δ1≤Y1≤Y1+δ1、Y2-δ2≤Y2≤Y2+δ2The range of the spraying amount of the plasticizer is a continuous interval covered by the prediction interval: y is1-δ1≤Y≤Y2+δ2Is denoted by (F)L，FU) I.e. FL＝Y1-δ1，FU＝Y2+δ2；
And (3) combining the two contents to determine the range of the spraying amount F of the plasticizer: (F)L，FU)±TF(ii) a Meanwhile, it should be clear that the upper and lower limits of the ranges of the plasticizer spraying amounts corresponding to different filter rod forming machine models, filter rod products, tow specifications and tow manufacturers are different, so that the hardness H of the filter rod products is determined.
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| CN111227299B (en) * | 2020-01-16 | 2022-05-31 | 浙江中烟工业有限责任公司 | Online continuous detection and control system and method for acetate fibers and plasticizers in filter stick production process |
| CN111257508A (en) * | 2020-01-16 | 2020-06-09 | 浙江中烟工业有限责任公司 | Method for quantitatively detecting spraying amount of plasticizer in real time in online production process of filter stick |
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