CN102840904A - Method for monitoring accuracy degree of metering balance during production process - Google Patents
Method for monitoring accuracy degree of metering balance during production process Download PDFInfo
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- CN102840904A CN102840904A CN2012102883749A CN201210288374A CN102840904A CN 102840904 A CN102840904 A CN 102840904A CN 2012102883749 A CN2012102883749 A CN 2012102883749A CN 201210288374 A CN201210288374 A CN 201210288374A CN 102840904 A CN102840904 A CN 102840904A
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Abstract
The invention discloses a method for monitoring an accuracy degree of a metering balance during a production process. The method comprises the following steps of: obtaining a logic coefficient through a specific value of a weighing value of supplied materials to actual quality; after achieving production, calculating a theoretical weighing value of the metering balance of the supplied materials after production through the logic coefficient; subsequently obtaining a metering balance displayed value of the supplied materials through weighing of the metering balance; using a difference value between the theoretical weighing value and the metering balance displayed value as a judgment basis; and giving an alarm and overhauling if the difference value exceeds the standard. With the adoption of the scheme, thereby solving the problem that the accuracy degree of the metering balance cannot be tracked in real time during a practical production process; by judging and evaluating the accuracy degree of the metering balance during the production process, a sign that systematic factors is found in time according to feedback information (being abnormal or not), and measures are taken to eliminate influences, so that the metering balance is kept in a controlled state that the metering balance is only influenced by random factors during the production process, thereby achieving a purpose of controlling quality during the production process.
Description
Technical field
The present invention relates to a kind of method for supervising of weigher, specifically a kind of method for supervising that is used in the weigher accuracy of production field.
Background technology
Weigher is widely used at production field, is used for the quality of weighing material, and the accuracy of its weighing affects the product quality of production.During like production of cigarettes, in each process section of throwing workshop, weigher is crucial metering outfit, its precision, stability be guarantee to mix from being dosed into whether silk perfuming process works well, prerequisite that whether technic index up to standard.The semi-invariant of weigher weighing can reflect the total kilogram of number that each technological process is produced, and on semi-invariant, also can reflect situation such as silk production rate, filling value, whole cut rate, water percentage, the variation of loss value machine degree of purity.Can find out that the measuring accuracy of weigher affects whole production of cigarettes process.At present; The calibration cycle of national standard weigher is six months; In these six months, the user is difficult to follow the tracks of the weighing balance accuracy, when the measuring accuracy of weigher changes; Be difficult in time to find, thereby cause the pipe tobacco silk production rate, day supplement with money, the accuracy of whole cut rate, water percentage, loss value and degree of purity data is difficult to control.
The verifying attachment and the method for some weigher accuracy have also been opened in the prior art altogether; As disclose among the Chinese patent document CN201653535U a kind of be used for weigher test scale device in real time; Comprise a scale body, be connected with a control cylinder unit on this scale body, the cylinder of this control cylinder unit is stuck and is connected with a suspension bracket; Be connected with a counterweight on this suspension bracket; This control cylinder unit stretches out or withdraws and is positioned at the primary importance or the second place to control this counterweight, and this counterweight breaks away from this suspension bracket on this primary importance, is suspended on this suspension bracket at this counterweight on this second place.Counterweight did not break away from suspension bracket when this verifying attachment was not tested scale, and the weight of counterweight is not added on the scale, when testing scale; Control module is withdrawn; Control cylinder unit and suspension bracket are left counterweight under order ground, hang in the sky, and this counterweight is as the part that increases; Its weight counts the scale body weight, and whether accurate as long as whether the weight that observe to increase is the weight of counterweight if just can draw title.The verifying attachment of the weigher accuracy that provides in this technical scheme, though easy to use, need special verifying attachment to check; Be not suitable in the production line, and special verifying attachment is set, not only labor intensive, material resources; Also increase working time, improved production cost.In addition, in process of production, the weigher possibility is because the people is improper use or the variation of other factor generation precision, and the staff on the production line is difficult in time learn at this moment, has influenced normally carrying out of producing.
Summary of the invention
For this reason; Technical matters to be solved by this invention is weigher verifying attachment of the prior art; Special device need be set, increased production cost, be not suitable for production run in the real-time technical matters of monitoring, need not to be provided with special device and just can check the weigher method of accuracy thereby provide a kind of.
For solving the problems of the technologies described above, the present invention provides the method for supervising of weigher accuracy in a kind of production run, comprises the steps:
(1) before this batch produced beginning, uses weigher weighing supplied materials weight, the weighing value of supplied materials before obtaining to produce;
(2) ratio of the actual weight of the weighing value of supplied materials and the preceding supplied materials of production before calculating is produced is as the logic coefficient;
(3) after this batch production is accomplished, calculate the actual weight of supplied materials after producing and the product of said logic coefficient, the theoretical weighing value that obtains producing the back supplied materials;
(4) the said supplied materials after the said weigher weighing of use is produced obtains the said weigher displayed value of producing the back supplied materials;
(5) calculate said theoretical weighing value and said difference of producing the weigher displayed value of back supplied materials of producing the back supplied materials,, then carry out abnormal alarm, carry out the inspection and the calibration of weigher if said difference exceeds test stone.
The method for supervising of weigher accuracy in the production run of the present invention, in said step (1), said weigher meets measurement standard through calibration.
The method for supervising of weigher accuracy in the production run of the present invention, in said step (2), the actual weight of said supplied materials obtains through the weighing of other scales.
The method for supervising of weigher accuracy in the production run of the present invention, in said step (5), said test stone is formulated according to GB SPC.
The method for supervising of weigher accuracy in the production run of the present invention, in said step (5), said standard is 3 times of historical data standard deviations, exceeds for unusually.
Technique scheme of the present invention is compared prior art and is had the following advantages:
(1) method for supervising of weigher accuracy in the production run of the present invention; The ratio of the weighing value of supplied materials and the actual mass of producing preceding supplied materials obtains the logic coefficient before before producing beginning, passing through to produce; After producing completion; Calculate the theoretical weighing value of this production back weigher through logic coefficient and the actual mass of producing the back supplied materials; To produce the weigher displayed value of back supplied materials then through the weigher weighing, the difference of said theoretical weighing value and said weigher displayed value as judgment data, as is exceeded standard and then reports to the police and overhaul.Through this scheme; Solved in the production run can't real-time follow-up weigher accuracy problem; Through the order of accuarcy of weigher in the production run being judged and is estimated, according to feedack whether (unusually) in time find the sign that systemic factor occurs, and take measures to eliminate its influence; Make weigher maintain the slave mode that influenced by random factor in process of production, reached the purpose of control of quality in the production run.The method for supervising of weigher accuracy in the production run of the present invention; Formed the variation of uclear scale precision has been monitored, grasped at any time to weigher in real time; Guarantee weigher precision according with process requirements; Find and keep in repair during with calibration in 6 months and change the prevention repair and maintenance into, realize changing to process control, change to automatic control science decision by the manual control empirical decision making by result's control.The method for supervising of weigher accuracy has solved that the weighing balance check needs special arrangement in the prior art in the production run of the present invention; Be not suitable for the technical matters of monitoring measuring accuracy in the production run in real time, be particularly useful for the monitoring of weigher accuracy in the production run.
(2) method for supervising of weigher accuracy in the production run of the present invention; In said step (1), said weigher meets measurement standard through calibration; Use the weigher after calibrating to produce; Can judge better whether it precision variation has taken place in process of production, in whole process of production, keep higher accuracy of measurement, guarantee the normal operation and the product quality of producing.
(3) method for supervising of weigher accuracy in the production run of the present invention, in said step (2), the actual weight of said supplied materials obtains through the sign of supplied materials, and the actual weight of said supplied materials is easy to obtain, and it is simple to use this method to calculate.
(4) method for supervising of weigher accuracy in the production run of the present invention; In said step (5); Said test stone is formulated according to GB SPC, and said standard is 3 times of historical data standard deviations, exceeds for unusually; National standard and industrial needs are convenient in time pinpoint the problems and find out problem.
Description of drawings
For content of the present invention is more clearly understood, below according to a particular embodiment of the invention and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is the process flow diagram of the method for supervising of weigher accuracy in the production run of the present invention.
Embodiment
Provide a concrete embodiment of the method for supervising of weigher accuracy in the production run of the present invention below, comprise the steps:
(1) before this batch produced beginning, use weigher weighing to be checked to produce preceding supplied materials weight, the weighing value A of supplied materials before obtaining to produce
1Weigher after here can selecting to calibrate comes weighing, has measuring accuracy preferably through the weigher after the calibration, improves the weighing precision in the production run.Certainly, if there is error slightly in the weigher here, do not influence yet this method in the whole process to the monitoring of this weigher accuracy.
(2) calculate the weighing value A that produces preceding supplied materials
1With the actual weight A that produces preceding supplied materials
0Ratio, as logic coefficient B, B=A
1/ A
0The actual weight A of supplied materials before producing
0For adopting the weight of other each operation scale weighings, can obtain through methods such as weighings.
(3) after this batch production is accomplished, obtain to produce the actual weight A ' of back supplied materials
0, the actual weight A ' of supplied materials after the production here
0Also be the weight that adopts other each operation scales to weigh, other operations of here selecting claim should with step (2) in select identical.With the actual weight A ' that produces the back supplied materials
0Multiply each other with said logic coefficient B, obtain producing the theoretical weighing value A ' of back supplied materials
1, i.e. A '
1=A '
0* B.
(4) use the said supplied materials of weigher weighing said to be checked, obtain the said weigher displayed value A that produces the back supplied materials
2
(5) calculate said theoretical weighing value A ' and said weigher displayed value A
2Difference C, C=︳ A '
1-A
2︳ if said difference exceeds test stone, then carries out abnormal alarm, carries out the inspection and the calibration of weigher.Said test stone is formulated according to GB SPC (statistical Process Control), and said standard is 3 times of historical data standard deviations, exceeds for unusually.
The method for supervising of weigher accuracy in the production run of the present invention; Can carry out accuracy monitoring simultaneously to a plurality of weighers in the production run, be a kind ofly have automatic collection, analyze automatically, the accuracy of monitoring scale, metrological personnel carry out the inspection of weigher and the method for calibration operation according to the monitoring alarm.The staff in time finds the sign that systemic factor occurs according to feedback information, and takes measures to eliminate its influence, makes weigher maintain the slave mode that influenced by random factor in process of production, has reached the purpose of control of quality.Be applicable to the check of weigher accuracy in the production run, be particularly useful in the cigarette industry throwing Workshop Production process real-time monitoring the accuracy of weigher.
Obviously, the foregoing description only be for explanation clearly done for example, and be not to qualification of the present invention.For the those of ordinary skill in affiliated field, can also make other multi-form variation or change on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (5)
1. the method for supervising of weigher accuracy in the production run is characterized in that, comprises the steps:
(1) before this batch produced beginning, uses weigher weighing supplied materials weight, the weighing value of supplied materials before obtaining to produce;
(2) ratio of the actual weight of the weighing value of supplied materials and the preceding supplied materials of production before calculating is produced is as the logic coefficient;
(3) after this batch production is accomplished, calculate the actual weight of supplied materials after producing and the product of said logic coefficient, the theoretical weighing value that obtains producing the back supplied materials;
(4) the said supplied materials weight after the said weigher weighing of use is produced obtains the said weigher displayed value of producing the back supplied materials;
(5) calculate said theoretical weighing value and said difference of producing the weigher displayed value of back supplied materials of producing the back supplied materials,, then carry out abnormal alarm, carry out the inspection and the calibration of weigher if said difference exceeds test stone.
2. the method for supervising of weigher accuracy in the production run according to claim 1 is characterized in that: in said step (1), said weigher meets measurement standard through calibration.
3. the method for supervising of weigher accuracy in the production run according to claim 1 and 2 is characterized in that: in said step (2), the actual weight of said supplied materials obtains through the weighing of other scales.
4. the method for supervising of weigher accuracy in the production run according to claim 3 is characterized in that: in said step (5), said test stone is formulated according to GB SPC.
5. the method for supervising of weigher accuracy in the production run according to claim 4 is characterized in that: in said step (5), said standard is 3 times of historical data standard deviations, exceeds for unusually.
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| CN201210288374.9A CN102840904B (en) | 2012-08-14 | 2012-08-14 | The method for supervising of weigher accuracy in a kind of production run |
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| CN201210288374.9A CN102840904B (en) | 2012-08-14 | 2012-08-14 | The method for supervising of weigher accuracy in a kind of production run |
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| CN102840904A true CN102840904A (en) | 2012-12-26 |
| CN102840904B CN102840904B (en) | 2015-10-21 |
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Cited By (6)
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| CN104316157A (en) * | 2014-11-07 | 2015-01-28 | 马钢(集团)控股有限公司 | Method for automatically monitoring indication error changes of belt weighers in blending ore accumulation system |
| CN104555820A (en) * | 2014-12-23 | 2015-04-29 | 山河智能装备股份有限公司 | Flexible arm forklift and control system and control method thereof |
| CN105136270A (en) * | 2015-10-21 | 2015-12-09 | 北京金日新事业技术有限公司 | Nuclear scale fault diagnosis device and using method |
| CN109916496A (en) * | 2019-04-11 | 2019-06-21 | 深圳市深信信息技术有限公司 | A kind of monitoring method and system of electronic scale |
| CN110133182A (en) * | 2019-04-01 | 2019-08-16 | 河南中烟工业有限责任公司 | A method of using fill factor evaluating cigarette pipe tobacco availability |
| CN112345056A (en) * | 2020-10-13 | 2021-02-09 | 河钢股份有限公司承德分公司 | Method for calibrating and verifying precision of decrement scale by substitute |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104316157A (en) * | 2014-11-07 | 2015-01-28 | 马钢(集团)控股有限公司 | Method for automatically monitoring indication error changes of belt weighers in blending ore accumulation system |
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| CN110133182B (en) * | 2019-04-01 | 2021-10-22 | 河南中烟工业有限责任公司 | Method for evaluating usability of cigarette tobacco shreds by adopting filling coefficient |
| CN109916496A (en) * | 2019-04-11 | 2019-06-21 | 深圳市深信信息技术有限公司 | A kind of monitoring method and system of electronic scale |
| CN109916496B (en) * | 2019-04-11 | 2020-01-24 | 深圳市深信信息技术有限公司 | Monitoring method and system of electronic scale |
| CN112345056A (en) * | 2020-10-13 | 2021-02-09 | 河钢股份有限公司承德分公司 | Method for calibrating and verifying precision of decrement scale by substitute |
| CN112345056B (en) * | 2020-10-13 | 2022-07-22 | 河钢股份有限公司承德分公司 | Method for calibrating and verifying precision of decrement scale by substitute |
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| CN102840904B (en) | 2015-10-21 |
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