CN115868665A - Cigarette machine online cut tobacco quantity detection device - Google Patents
Cigarette machine online cut tobacco quantity detection device Download PDFInfo
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- CN115868665A CN115868665A CN202211539511.1A CN202211539511A CN115868665A CN 115868665 A CN115868665 A CN 115868665A CN 202211539511 A CN202211539511 A CN 202211539511A CN 115868665 A CN115868665 A CN 115868665A
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Abstract
The invention discloses an online cut tobacco quantity detection device of a cigarette making machine, belonging to the technical field of tobacco processing production. The invention solves the problem that the cut tobacco returning quantity of the cigarette making machine can not be accurately detected on line, and the accurate detection of the cut tobacco returning quantity on line can be realized by detecting the cut tobacco returning weight, the cut tobacco weight of the rolled cigarettes and the rejection weight of the cut stems on line; the method can not only realize the calculation of the cut tobacco return amount at a fixed production speed, but also establish the correlation between the cut tobacco weight and the cut tobacco and the vehicle speed by sampling the cut tobacco and the cut stems of the same brand at different vehicle speeds and realize the detection and calculation of the cut tobacco return amount at any vehicle speed through mathematical modeling; the same batch of cut tobacco of the same brand only needs to calibrate the cut tobacco shred return density and the cut stem weight in unit time once, and has convenient use and high automation degree.
Description
Technical Field
The invention belongs to the technical field of tobacco processing production, and particularly relates to an online cut tobacco quantity detection device for a cigarette making machine.
Background
In the cigarette production process, the cut tobacco return quantity of the cigarette making machine is an important parameter of the rolling process and has important influence on the indexes of the appearance, weight, suction resistance and the like of the cigarettes, the cut tobacco return quantity has strong negative correlation on the standard deviation of the weight of the cigarettes and the loose end removal rate, and the data deviation becomes an important factor influencing the processing quality.
In the process of cut tobacco suction forming of the cigarette making machine, the cut tobacco is sucked by the cut tobacco suction belt by negative pressure and is conveyed to the cigarette making device through the flue, and because the cut tobacco cut back by the leveling disc is basically output by the auxiliary cut back belt, the cut tobacco consumption of the cigarette making machine in unit time mainly comprises three parts of cut tobacco weight for cigarettes, cut tobacco weight cut back by the leveling disc and cut stem removal weight.
At present, the cut tobacco return amount of a cigarette making machine is mainly detected by relying on a manual driving metering test, a proper amount of cut tobacco is respectively connected to an outlet of a cigarette making gun and a cut tobacco return outlet in a certain time period and weighed, the sum of the weights of the cut tobacco connected to the outlet of the cigarette making gun and the cut tobacco return outlet is the total mass of the cut tobacco supplied and consumed by default, whether the cut tobacco return amount meets the process requirements or not is judged by calculating the cut tobacco return amount, each test wastes time and labor, and the consumption is huge; because the tobacco shreds are not wrapped in the tobacco pipe, the tobacco shreds and tobacco powder fly in a mess, so that the tobacco shreds are accurately collected and rolled to have errors, the state of the leveling disk in the manual driving test is fixed and is not consistent with the state of the leveling disk in the actual production, and meanwhile, the rejection weight of the cut stems in the test time period is not taken into consideration, so that the cut stem returning quantity in the test calculation is different from the cut stem returning quantity in the actual production process. Some cigarette factories also make improvement attempts on the method for testing and calculating the amount of the cut tobacco, and a conveying and weighing device is additionally arranged for detecting the cut tobacco, but the detection device and the method for accurately calculating the amount of the cut tobacco on line without manual intervention are not reported. Therefore, an on-line cut tobacco amount detecting device for a cigarette making machine is urgently needed to solve the problems.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the on-line cut tobacco quantity detection device of the cigarette making machine, which is reasonable in design, overcomes the defects of the prior art and has a good effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
an online cut tobacco quantity detection device of a cigarette making machine comprises a cut tobacco weight detection module, a rolled cigarette and cut tobacco weight detection module, a cut stem removal weight detection module and a man-machine interaction display module; wherein the content of the first and second substances,
the cut tobacco shred weight detection module is configured for acquiring the volume of the stacked cut tobacco in the auxiliary cut tobacco shred return belt or the blanking vibration groove of the cigarette making machine and calculating the weight of the cut tobacco shreds through the density of the cut tobacco acquired in advance;
the rolled cigarette and tobacco shred weight detection module is configured to obtain communication information, obtain the average production speed of a unit and the average deviation of the unit and a single target weight through CAN communication or Profibus communication protocol, correct the single target weight by the average deviation of the single target weight and the single target weight, subtract the average weight of single cigarette paper and lap adhesive which are measured in advance under the current brand material, calculate the weight of single rolled tobacco shred, and then multiply the average production speed of the unit and the test time to obtain the weight of the rolled cigarette and tobacco shred in the test time period;
the stem thread removing weight detection module is additionally arranged at the secondary air separation stem thread collecting port and is configured for collecting the stem threads subjected to secondary air separation and detecting the weight; the cut stem sampling is realized through the action of a baffle plate, and the action of the baffle plate is realized by the operation of a motor; when testing is carried out, the motor drives the baffle to act to enable the cut stems falling by winnowing to enter the measuring channel, weighing is carried out through the weighing module in the cut stem removal weight detection module after sampling, the motor drives the baffle to act to recover the original state after testing is finished, so that the cut stems directly fall into the collecting channel, and meanwhile, the weighing module in the cut stem removal weight detection module sends the cut stems back to the collecting channel;
and the human-computer interaction display module is configured to be used for setting parameters and displaying the wire returning amount calculation result, and an integrated touch industrial control screen is selected.
Preferably, the yarn return weight detection module comprises a detection head and a controller;
the detection head is configured to be used for acquiring height profile information of cut tobacco shred return wires on the auxiliary shred return belt or the blanking vibration groove;
and the controller is configured for converting the detection signals of the detection head into test results, and simultaneously completing parameter configuration of the detection head and communication with the human-computer interaction display module.
Preferably, a detection head of the wire returning weight detection module is arranged above the auxiliary wire returning belt or the blanking vibration groove, and the detection head is a linear laser ranging sensor.
Preferably, the calculation formula of the wire returning amount is as follows:
in the formula: w Silk waste For the cut tobacco weight after the cut tobacco is cut by a flattening disc within the test time, W Rolling system Weight of tobacco shreds consumed for rolling into cigarette in test time, W Cut stems The weight of the stem shreds collected after the secondary air separation in the testing time is measured.
Preferably, W Rolling system The calculation formula of (a) is as follows:
W rolling system ＝(W Single target weight +W Mean deviation from single target weight -W Average weight of single cigarette paper and lap adhesive )*ν Average vehicle speed *t Testing ；
In the formula: v is Average vehicle speed The unit average production speed is in counts/minute; t is t Testing The test time is.
Preferably, W Average weight of single cigarette paper and lap adhesive The calculation method of (2) is as follows:
picking up a plurality of dropped short cigarettes without mouths at a sampling port, blowing off the cut tobacco by utilizing compressed air, and weighing the residual hollow tobacco pipe at the moment to obtain the average weight of the single cigarette paper and the neutral line adhesive.
Preference is given toGround, at a fixed unit production speed, W Silk waste The calculation method of (2) is as follows:
the cross section area S of the cut tobacco shred at a certain moment is calculated by the formula:
in the formula: Δ x is the distance between each laser spot, n is the number of line laser spots, h n Height measured for the nth laser spot;
the volume calculation formula of the cut tobacco shred return in the test time is as follows:
in the formula: v is the volume of cut tobacco shred return in the test time; f is the sampling frequency of the line laser sensor; s (t) is the cross-sectional area of the cut tobacco shred return sampled for the t time; v is the speed of the cut tobacco; t is the test period of the line laser ranging sensor;
the calculation formula of the cut tobacco shred weight reduced by the flattening disc in the test time is as follows:
W silk waste ＝ρV
In the formula: w Silk waste The weight of cut tobacco shred cut back is reduced by a flattening disc within the testing time; rho is the average density of cut tobacco shred return;
the method for calculating the average density rho of the cut tobacco shreds is as follows:
the tobacco shred is sampled and placed in a container with a fixed volume on the tobacco shred return conveying for many times, the average density of the tobacco shred return is calculated after weighing for many times, and the same batch of tobacco shreds of the same brand are calibrated once.
Preferably, at a fixed unit production speed, W Cut stems The calculation method of (2) is as follows:
the weight of the cut stem in unit time is calculated after a plurality of sampling tests, and then the weight of the cut stem in test time can be calculated by multiplying the weight by the cut tobacco shred return test time.
Preferably, the rolled cigarette and tobacco shred weight detection module comprises a calculation unit and a communication unit, wherein the communication unit is arranged in the calculation unit, and the calculation unit is connected with the human-computer interaction display module through a line;
the calculating unit completes the main control calculation of the whole detecting device, on one hand, related data of a weight control system of the cigarette making machine are obtained through the communication unit, on the other hand, a motor of the cut stem rejecting weight detecting module is controlled to rotate to drive the baffle to act, cut stem sampling is completed, a sampled cut stem weighing value is obtained, and meanwhile, related calculation is completed.
Preferably, a calculating unit of the rolled cigarette and tobacco shred weight detecting module is a small fan-free integrated industrial personal computer, and the communication unit is a board card supporting a related communication protocol.
The invention has the following beneficial technical effects:
1. the invention solves the problem that the cut tobacco return quantity of the cigarette making machine can not be accurately detected on line, and can realize accurate detection of the cut tobacco return quantity on line through on-line detection of the cut tobacco return weight, the cut tobacco weight of the rolled cigarettes and the cut stem removal weight.
2. The method not only can realize the calculation of the cut tobacco return quantity at a fixed production speed, but also can establish the correlation between the cut tobacco weight and the cut tobacco and the vehicle speed by sampling the cut tobacco and the cut stems of the same brand at different vehicle speeds and realize the detection and calculation of the cut tobacco return quantity at any vehicle speed through mathematical modeling.
3. The same batch of cut tobacco of the same brand only needs to calibrate the cut tobacco shred return density and the cut stem weight in unit time once, and has convenient use and high automation degree.
Drawings
Fig. 1 is a schematic structural diagram of an on-line cut tobacco quantity detection device of a cigarette making machine according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in figure 1, the on-line cut tobacco quantity detection device of the cigarette making machine mainly comprises a cut tobacco weight detection module, a rolled cigarette cut tobacco weight detection module, a cut stem removal weight detection module and a human-computer interaction display module. In the process of tobacco shred suction forming of the cigarette making machine, the tobacco shred suction belt sucks the tobacco shreds by negative pressure and conveys the tobacco shreds to the rolling device through the flue, and because the cut tobacco shreds reduced by the leveling disc are basically output by the auxiliary cut tobacco shred return belt, the tobacco shred consumption of the cigarette making machine in unit time mainly comprises the weight of the tobacco shreds used for cigarettes, the weight of the tobacco shreds reduced by the leveling disc and the removal weight of cut stems.
The calculation formula of the wire returning amount is as follows:
in the formula: w is a group of Silk waste The weight of the cut tobacco shred hard waste after being reduced by a flattening disc, W Rolling system The weight of tobacco shreds consumed for rolling into cigarette,
W cut stems The weight of the stem shreds collected after the secondary air separation.
Wherein, the cut tobacco weight detection module comprises detection head and controller, detects the first optional high accuracy line laser ranging sensor of available, installs in vice return silk area or blanking groove of shaking the top, acquires the vice return silk area of cigarette machine or the blanking inslot pipe tobacco pile up volume that shakes, and in the container of fixed volume was put into in the sample on the return tobacco is carried many times, can calculate the average density of cut tobacco after weighing many times, and the same batch pipe tobacco of same brand only need mark once, just can calculate the cut tobacco weight:
under the condition of fixed unit production speed, the method for calculating the weight of the cut tobacco shred weight detection module comprises the following steps: the line laser sensor is composed of a plurality of point lasers, the measured height of the line laser sensor is a set formed by a plurality of points, and the cross section area S of the cut tobacco shred return at a certain moment is calculated by the formula:
in the formula: Δ x is the distance between laser points, n is the number of line laser points, h n The height measured for the nth laser spot.
The volume calculation formula of the cut tobacco shred in unit time is as follows:
in the formula: v is the unit volume of cut tobacco shred return in time; f is the sampling frequency of the line laser sensor; s (t) is the cross-sectional area of the sampling tobacco bundle for the t time; v is the speed of the filament return.
The calculation formula of the cut tobacco shred weight reduced by the flattening disc in the test time is as follows:
W silk waste ＝ρV
In the formula: w Silk waste The weight of cut tobacco shred cut back is reduced by a flattening disc within the testing time; rho is the average density of cut tobacco shred returns.
The rolled cigarette tobacco shred weight detection module mainly comprises a communication unit and a calculation unit, wherein the calculation unit is a small fan-free integrated industrial personal computer, the communication unit is a board card supporting a related communication protocol, the communication unit is installed in the calculation unit, the average production speed of a rolling unit and the average deviation of the rolling unit and a single target weight are obtained through CAN communication or Profibus communication protocol monitoring, under the condition of carrying out precision and linear detection of a microwave density detector and slope calibration of a weight control system, the single target weight is corrected by the average deviation of the single target weight, the average weight of single cigarette paper and lap adhesive under the current brand material measured in advance is subtracted, the single rolled tobacco shred weight is calculated, and the weight of the rolled cigarette tobacco shreds in the test time period CAN be obtained by multiplying the average production speed of the rolling unit and the test time:
W rolling system ＝(W Single target weight +W Mean deviation from single target weight -W Average weight of single cigarette paper and lap adhesive )*ν Average vehicle speed *t Testing 。
In the formula: v is Average vehicle speed The unit average production speed is in counts/minute; t is t Testing The test time is.
When the average weight of the single cigarette paper and the lap adhesive is calculated, special sampling is not needed, only a certain amount of dropped short cigarettes without mouths are needed to be picked up at a sampling port, the cut tobacco is blown off by utilizing compressed air, and then the rest of the hollow tobacco pipes are weighed, so that the average weight of the single cigarette paper and the lap adhesive can be obtained.
The stem shred removing weight detection module acquires collection and weight detection of the stem shreds after secondary air separation, sampling of the stem shreds is realized through baffle plate action, and the baffle plate action is realized by depending on the operation of a motor; automatic weighing in the test time can be realized through a specially designed sampling module after sampling, the weighed cut tobacco can be fed back to the cut stem collecting channel again, the weight of the cut stems in unit time can be calculated after multiple sampling tests at the production speed of a fixed unit, and the weight of the cut stems in the test time can be calculated by multiplying the weight by the cut stem returning test time.
The small-size no fan integration industrial computer of the calculating unit of system cigarette pipe tobacco weight detection module accomplishes the master control of whole detection device and calculates, on the one hand monitors the cigarette and connects unit production speed and the deviation value with target weight of uploading of unit weight control system through the communication protocol integrated circuit board of its internally mounted, and on the other hand controls the rotation of stalk silk and rejects weight detection module motor and accomplishes the stalk silk sample and acquires sample stalk silk weighing value with the drive baffle action, accomplishes relevant calculation simultaneously.
The production speed of a unit is respectively set to be 5000 to 7000 counts/minute by taking 500 counts as steps, cut tobacco and cut stems of the same brand are sampled, the correlation between the weight of the cut tobacco and the cut stems and the vehicle speed is established, and meanwhile, mathematical modeling is carried out to realize the detection and calculation of the cut tobacco quantity at any vehicle speed.
In conclusion, the online cut tobacco return quantity detection device for the cigarette making machine, provided by the invention, solves the problem that the cut tobacco return quantity of the cigarette making machine cannot be accurately detected online, and can realize accurate detection of the online cut tobacco return quantity by online detection of cut tobacco return weight, cut tobacco weight of rolled cigarettes and cut stem removal weight; the method can not only realize the calculation of the cut tobacco return amount at a fixed production speed, but also establish the correlation between the cut tobacco return weight and the cut tobacco and the vehicle speed by sampling the cut tobacco and the cut stems of the same brand at different vehicle speeds and realize the detection and calculation of the cut tobacco return amount at any vehicle speed through mathematical modeling; the same batch of cut tobacco of the same brand only needs to calibrate the cut tobacco shred return density and the cut stem weight in unit time once, and has convenient use and high automation degree.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a cigarette machine online cut tobacco volume detection device which characterized in that: the device comprises a cut tobacco weight detection module, a rolled cigarette and cut tobacco weight detection module, a cut stem removal weight detection module and a human-computer interaction display module; wherein the content of the first and second substances,
the cut tobacco weight detection module is configured to be used for acquiring the volume of the stacked cut tobacco in the auxiliary cut tobacco returning belt or the blanking vibration groove of the cigarette making machine and calculating the weight of cut tobacco through the previously acquired density of the cut tobacco;
the rolled tobacco weight detection module is configured to obtain communication information, obtain the average production speed of the unit and the average deviation from the single target weight through CAN communication or Profibus communication protocol, correct the single target weight by the average deviation from the single target weight, subtract the average weight of single cigarette paper and lap adhesive under the current brand material measured in advance, calculate the weight of single rolled tobacco, and then multiply the average production speed of the unit and the test time to obtain the weight of the rolled tobacco in the test time period;
the stem shred removing weight detection module is additionally arranged at the secondary air separation stem shred collecting port and is configured to be used for collecting the stem shreds subjected to secondary air separation and detecting the weight; the cut stem sampling is realized through the action of a baffle plate, and the action of the baffle plate is realized by the operation of a motor; when testing is carried out, the motor drives the baffle to act to enable the cut stems falling by winnowing to enter the measuring channel, weighing is carried out through the weighing module in the cut stem removal weight detection module after sampling, the motor drives the baffle to act to recover the original state after testing is finished, so that the cut stems directly fall into the collecting channel, and meanwhile, the weighing module in the cut stem removal weight detection module sends the cut stems back to the collecting channel;
and the human-computer interaction display module is configured to be used for setting parameters and displaying the wire return amount calculation result, and an integrated touch industrial control screen is selected.
2. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 1, wherein: the yarn return weight detection module comprises a detection head and a controller;
the detection head is configured to be used for acquiring height profile information of cut tobacco shreds on the auxiliary cut tobacco shred return belt or the blanking vibration groove;
and the controller is configured for converting the detection signals of the detection head into test results, and simultaneously completing parameter configuration of the detection head and communication with the human-computer interaction display module.
3. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 1, wherein: the detection head of the wire returning weight detection module is arranged above the auxiliary wire returning belt or the blanking vibration groove, and the detection head selects a linear laser ranging sensor.
4. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 1, wherein: the calculation formula of the wire returning amount is as follows:
in the formula: w Silk waste For the cut tobacco weight after the cut tobacco is cut by a flattening disc within the test time, W Rolling system Weight of tobacco shreds consumed for rolling into cigarette in test time, W Cut stems The weight of the stem shreds collected after the secondary air separation in the testing time is measured.
5. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 4, wherein: w is a group of Rolling system The calculation formula of (a) is as follows:
W rolling system ＝(W Single target weight +W Mean deviation from single target weight -W A single cigarette paper and lapping adhesive Average weight )*ν Average outVehicle speed *t Testing ；
In the formula: v is Average vehicle speed The unit is average production speed of the unit, and the unit is counts/minute; t is t Testing The test time is.
6. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 5, wherein: w Average weight of single cigarette paper and lap adhesive The calculation method of (2) is as follows:
picking up a plurality of dropped short cigarettes without mouths at a sampling port, blowing off the cut tobacco by utilizing compressed air, and weighing the residual hollow tobacco pipe at the moment to obtain the average weight of the single cigarette paper and the neutral line adhesive.
7. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 4, wherein: at a fixed unit production speed, W Hard waste The calculation method of (2) is as follows:
the cross section area S of the cut tobacco shred at a certain moment is calculated by the formula:
in the formula: Δ x is the distance between each laser spot, n is the number of line laser spots, h n Height measured for the nth laser spot;
the volume calculation formula of the cut tobacco shred return in the test time is as follows:
in the formula: v is the volume of cut tobacco shred return in the test time; f is the sampling frequency of the line laser sensor; s (t) is the cross-sectional area of the cut tobacco shred return sampled for the t time; v is the speed of the cut tobacco; t is the test period of the line laser ranging sensor;
the calculation formula of the cut tobacco shred weight reduced by the flattening disc in the test time is as follows:
W silk waste ＝ρV
In the formula: w Silk waste The weight of cut tobacco shred cut back is reduced by a flattening disc within the testing time; rho is the average density of cut tobacco shred return;
the method for calculating the average density rho of the cut tobacco shreds is as follows:
the tobacco shred is sampled and placed in a container with a fixed volume on the tobacco shred return conveying for many times, the average density of the tobacco shred return is calculated after weighing for many times, and the same batch of tobacco shreds of the same brand are calibrated once.
8. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 4, wherein: at a fixed unit production speed, W Cut stems The calculation method of (2) is as follows:
and (4) obtaining the weight of the cut stems in unit time after multiple sampling tests, and multiplying the weight by the cut stem returning amount test time to obtain the weight of the cut stems in the test time.
9. The on-line cut-tobacco return amount detection device of the cigarette making machine according to claim 1, wherein: the rolled cigarette and tobacco shred weight detection module comprises a calculation unit and a communication unit, wherein the communication unit is arranged in the calculation unit, and the calculation unit is connected with the human-computer interaction display module through a line;
the calculating unit completes the main control calculation of the whole detecting device, on one hand, related data of a weight control system of the cigarette making machine are obtained through the communication unit, on the other hand, a motor of the cut stem rejecting weight detecting module is controlled to rotate to drive the baffle to act, cut stem sampling is completed, a sampled cut stem weighing value is obtained, and meanwhile, related calculation is completed.
10. The apparatus for detecting the amount of cut tobacco drawn on the cigarette making machine according to claim 9, wherein: a calculation unit of the rolled cigarette and tobacco shred weight detection module is a small fan-free integrated industrial personal computer, and a communication unit is a board card supporting a related communication protocol.
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| US20220248593A1 (en) * | 2021-02-05 | 2022-08-11 | Cnh Industrial Canada, Ltd. | System and method for operating a material metering system of an agricultural implement |
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