CN211856242U - Filter stick on-line measuring system - Google Patents
Filter stick on-line measuring system Download PDFInfo
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- CN211856242U CN211856242U CN202020209900.8U CN202020209900U CN211856242U CN 211856242 U CN211856242 U CN 211856242U CN 202020209900 U CN202020209900 U CN 202020209900U CN 211856242 U CN211856242 U CN 211856242U
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- 241001330002 Bambuseae Species 0.000 description 10
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- 239000011425 bamboo Substances 0.000 description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 8
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- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model discloses a filter stick on-line detection system, which comprises an industrial personal computer, a data acquisition and processing device containing an analog-digital conversion module and a microwave detection device arranged between a strip making device and a cutter head of a filter stick forming machine; the data acquisition and processing device is respectively in electrical signal connection with the industrial personal computer, the microwave detection device and a rejection valve controller of the filter rod forming machine; the microwave detection device is used for detecting the section density of the filter stick strip produced on line; the industrial personal computer is used for monitoring the detection state; the data acquisition and processing device is used for acquiring detection signals sent by the microwave detection device and outputting control signals to the rejection valve controller. The utility model discloses a microwave detection technique carries out non-contact on-line measuring to the density of filter rod (filter rod), has solved the artifical problem that can not in time, effectively discern the bad filter rod that leads to because of the silk bundle is filled, effectively avoids unqualified filter rod to flow into next procedure.
Description
Technical Field
The utility model relates to a cigarette processing equipment technical field, concretely relates to filter rod on-line measuring system.
Background
In the production process of the filter stick, due to the reasons of unstable air supply pressure of the conveying nozzle, improper parameter setting and the like, the running speed of the tows is possibly unstable, the tow filling amount is fluctuated, the tows are excessively filled and insufficiently filled in a short time, and the filter stick is similar to a bamboo joint shape or is filled with a filter stick with too little amount and a filter stick without glycerin.
For example, bamboo joint filter sticks are used, so that the bamboo joint filter sticks are difficult to distinguish from qualified filter sticks in appearance, and are extremely difficult to select once mixed into the qualified filter sticks. If the bamboo joint filter stick is found in a manual hand-pinching mode, the checked filter stick can be deformed and scrapped no matter whether the filter stick is qualified or not; if a single-filter-rod weighing mode is adopted for inspection, the filter rods produced within a period of time need to be isolated and inspected, the efficiency is extremely low because each filter rod needs to be inspected, and the inspection missing phenomenon can occur because the time period of the bamboo joint filter rods can not be accurately determined; in the production process, an effective means is not provided to find unqualified filter sticks such as bamboo joints in time, so that the unqualified filter sticks flow into the next process.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a filter rod on-line measuring system to solve the problem that detects the unqualified filter rod that leads to because of the silk bundle filling is undulant.
In order to achieve the above object, the present invention provides the following technical solutions:
a filter stick on-line detection system comprises an industrial personal computer, a data acquisition and processing device containing an analog-digital conversion module and a microwave detection device arranged between a strip making device and a cutter head of a filter stick forming machine;
the data acquisition and processing device is respectively in electrical signal connection with the industrial personal computer, the microwave detection device and a rejection valve controller of the filter rod forming machine;
the microwave detection device is used for detecting the section density of the filter stick strip produced on line;
the industrial personal computer is used for monitoring the detection state;
the data acquisition and processing device is used for acquiring detection signals sent by the microwave detection device and outputting control signals to the rejection valve controller.
Optionally, the microwave detection device includes a microwave signal generator, a microwave resonant cavity, a microwave coaxial transmission cable, a microwave signal isolator, an amplifier assembly, and a microwave signal detection section.
Optionally, the input port of the data collecting and processing device is further configured to receive a production status signal of the forming unit.
Optionally, the input port of the data collecting and processing device is further configured to receive a cutting pulse signal of the forming unit.
Optionally, a time delay device is arranged between the data acquisition and processing device and the rejection valve controller.
Optionally, a delay timing unit is integrated in the data acquisition and processing device.
Optionally, the system further comprises a shutdown control circuit of the forming unit;
and the output port of the data acquisition and processing device is electrically connected with the shutdown control circuit.
Optionally, the system further comprises an alarm device;
the output port of the data acquisition and processing device is electrically connected with the alarm device.
Optionally, the microwave detection device and the data acquisition and processing device are powered by a molding machine set.
Optionally, the data acquisition and processing device is a single chip microcomputer.
The core of the utility model is that the density of the filter rod (filter stick) is detected on line by adopting the microwave detection technology, the problem that the manual work can not timely and effectively identify the bad filter stick caused by the tow filling is solved, and the unqualified filter stick is effectively prevented from flowing into the next procedure. The application of microwave technique still makes the utility model discloses the scheme has following advantage:
1) real-time, fast and reliable;
2) the filter stick is not damaged by non-contact detection;
3) the microwave signal frequency is high, the change speed is fast, the measured data is accurate, and the missing detection cannot be generated.
Drawings
Fig. 1 is a schematic diagram of an electrical signal square frame of an embodiment of the filter stick online detection system provided by the present invention;
fig. 2 is a setting reference diagram of an embodiment of the microwave detection device provided by the present invention;
fig. 3 is a schematic diagram of an electrical signal block in a preferred embodiment of the filter stick online detection system provided by the present invention.
Detailed Description
In order to further understand the features and technical contents of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings and the embodiments.
Before explaining the scheme of the utility model, the following explanation is made to the filter rod production equipment and the reason for causing unqualified filter rods:
the filter rod forming machine set consists of an opening gluing machine and a filter rod forming machine, wherein the opening machine has the functions of unfolding a fiber tow band, eliminating curling, applying glycerin and recombining. The tow band is blown away, blown loose and evenly spread at the front and back three-level air opener, opened, stretched and decurled in the area between the pre-tension roller set, the input roller set and the stretching roller set, recombined and pre-bundled by the wedge-shaped groove roller after being sprayed with glycerin, finally the tow band is sent to the entrance tongue of the smoke cavity by the delivery nozzle with the help of compressed air, the filter strip is wrapped by the filter rod forming paper at the pressing plate, then the multi-section filter strip is formed by the striper, and then the single filter rod is cut by the cutter disc, namely the output cutting pulse (SCP pulse) of the forming machine is formed, the length of each filter rod corresponds to one SCP pulse, and finally the filter rod is conveyed to the next process equipment by the filter rod conveying unit. The conveying nozzle adopts a Venturi principle in physics, a certain negative pressure is generated at a nozzle opening, tows can be sucked into a nozzle channel, and the air quantity of the conveying nozzle is controlled by a related air path valve according to the speed of the filter strips.
In the production process of the filter stick forming machine set, due to the fact that the air supply pressure of the conveying nozzle is unstable, parameters are set improperly and the like, the running speed of tows is unstable, the tow filling amount fluctuates, for example, the tows are over-filled in a short time, and bamboo joints appear on filter sticks. The bamboo joint filter stick is mainly characterized in that the filling of the tow in the filter stick is uneven, the local filling is excessive, the hardness is larger, and the weight and the suction resistance of the filter stick are larger.
Based on this, the present invention provides an embodiment of a filter stick online detection system, as shown in fig. 1 and fig. 2, which includes an industrial personal computer, a data acquisition and processing device including an analog-to-digital conversion module, and a microwave detection device disposed between a filter rod making device and a cutter head of a filter rod making machine, where it is noted that the microwave detection device is installed between the filter rod making device and the cutter head, in order to facilitate continuous measurement, a filter rod passing through the filter rod making device is already formed and is a multi-segment filter rod, but is not yet cut into single filter rods by the cutter head, and the filter rod detection of the present invention is not limited to a final single filter rod cut into short filter rods, but refers to a filter rod segment after the formed filter rod is processed by the filter rod making device, because there is no strict definition in this field, and whether the filter rod segment is qualified or not is related to the quality of the final single filter rod, the filter rod test can therefore also be understood as a filter rod test. Then, the data acquisition and processing device is respectively in electrical signal connection with the industrial personal computer, the microwave detection device and a rejection valve controller of the filter rod forming machine; the microwave detection device is used for detecting the section density of the continuously produced filter rods; the industrial personal computer is used for monitoring the detection state; the data acquisition and processing device is used for acquiring detection signals sent by the microwave detection device and outputting control signals to the rejection valve controller.
Specifically, the microwave detection device may be composed of a microwave signal generator, a microwave resonant cavity, a microwave coaxial transmission cable, a microwave signal isolator, an amplifier assembly, and a microwave signal detector. The technical principle is that the microwave is an electromagnetic wave with the wavelength of 1mm-1m, the frequency is from 300MHZ to 300GHZ, and the microwave has resonance characteristics in a microwave resonant cavity. When the material to be measured passes through the microwave resonant cavity, the resonant frequency and the resonant amplitude of the material to be measured can be changed differently due to different dielectric constants of the filled dielectric materials and different amounts and shapes of the dielectric materials. The density of the measured material can be obtained through subsequent data processing by detecting the offset of resonant frequency of the resonant cavity and the attenuation of microwave power.
Because microwave signal frequency is high, change fast, reacts extremely sensitively to the change of different material natural resonant frequency and amplitude, and it belongs to contactless detection moreover, can not produce any harm to detected material itself, therefore microwave detection device itself is not the improvement of the utility model discloses, it is used for detecting the material according to certain order and distance arrangement in this field mostly to confirm the position offset of multiple different materials. For example, whether the bead blasting exists in the bead blasting filter stick or not, whether the bead blasting position is shifted or not is measured through the shift of the resonance frequency. But prior art has not had the on-line measuring scheme that has not utilized microwave to the bamboo joint filter rod that leads to because of the silk bundle packing, has filled too few filter rods, does not have unqualified filter rods such as glycerine filter rod yet, the utility model discloses receive prior art's inspiration, just apply microwave detection in this respect.
The microwave detection device is adopted to carry out online detection on the filter strip in production, so that the density value of each section of the filter strip can be detected. In actual operation, unqualified filter sticks can be detected in a mode of presetting a standard density value (the mode of setting a threshold value belongs to a conventional thought, and improvement on a program flow is not needed), for example, when the condition that the value is higher than the threshold value occurs in an online continuous detection process, the filter sticks can be determined to have bamboo joints, a system can send out a rejection signal, a forming machine controls a rejection valve to work, and the unqualified filter sticks are rejected. Specifically, the formed filter rods are cut into a plurality of sections by a strip beating device and then enter the microwave detection device along the guide pipe for detection, analog signals in the range of 0-10V or 4-20mA which can be output by the microwave detection device are converted into digital signals by a D/A module of the data acquisition and processing device, and whether unqualified filter rods appear or not is determined on the basis of the digital signals.
Furthermore, the data can be connected to an industrial personal computer through a serial port after being processed. The industrial personal computer is communicated with the microwave detection device, and can receive the density data of the processed filter strips in real time and monitor the running state of the system. In practical application, the industrial personal computer can provide a human-computer interaction interface, and is convenient for parameter setting (such as density threshold value, unqualified filter stick rejection value and the like), state monitoring, detection enabling, graphic display of density curve and the like. Wherein the construction of the human-computer interaction software that involves is similar with the center control system in the industrial control field, the utility model discloses do not do and describe repeatedly.
Regarding the data acquisition and processing device, a single chip microcomputer can be used for implementation, for example, an STM32F4 development board, which has an STM32F4 series processor with an ARM Cortex M4 kernel, integrates a single cycle DSP instruction and an FPU (floating point unit), can acquire an analog signal reflecting the density of a filter rod sent by a microwave detection system in real time, and can identify whether a defective filter rod occurs or not through conventional detection processing. For general processing concepts herein, reference may be made to, but not limited to, the following: under normal conditions, the tows in the filter strips are uniformly filled, the filling density fluctuation is small, and once the density value has large fluctuation, the situation that the driving woolen cloth reaches an unqualified filter rod can be considered.
The data acquisition and processing apparatus can also have multichannel (for example 12 way) opto-coupler isolation input to can also support 24V input etc. promptly, can gather other relevant signals through the input port of different standards, as shown in fig. 3, thereby for example can gather the production running signal that the filter rod forming unit given and confirm whether the unit is in normal production state, can understand, only when the unit operation is normal, the utility model provides an online detection system is just allowed work.
Not only the above, but also the control of the rejection valve, e.g. the rejection start moment can be controlled by the SCP pulse, as will be understood by the skilled person. Therefore can insert the SCP pulse signal that filter rod forming machine set gave to data acquisition and processing apparatus, nevertheless because the physics position that microwave detection device located has certain distance with the rejection mouth of make-up machine, in order to reduce unnecessary waste the utility model discloses an in certain preferred scheme, can also set up delay device between data acquisition and processing apparatus and the rejection valve controller, or be in integrated time delay unit in the data acquisition and processing apparatus, certain SCP (be through a plurality of single numbers of pulses of being cut promptly) that need delay after detecting unqualified filter rod promptly triggers the rejection valve action to accurate rejection problem filter rod, remain preceding qualified filter rod.
In addition, in other preferred schemes of the utility model, the output port of the data acquisition and processing device can also be connected with other hardware devices, such as a shutdown control circuit and/or an alarm device of a forming unit, the utility model discloses only provide relevant hardware scheme extension, and the output condition of shutdown signal and alarm signal is not in the scope of the discussion of the utility model, in the actual operation, for example, the shutdown signal can be output according to the number or the duration of the detected improper filter stick; and can also detect unqualified back at every turn (or certain number of times), output alarm information with forms such as sound, light, characters to arouse maintenance personal to notice, do not do the restriction to this the utility model discloses.
To sum up, the core of the utility model is that the density of the filter rod (filter stick) is detected on line by adopting the microwave detection technology, the problem that the manual work can not be timely and effectively identify the bad filter stick caused by the tow filling is solved, and the unqualified filter stick is effectively avoided flowing into the next procedure. The application of microwave technique still makes the utility model discloses the scheme has following advantage:
1) real-time, fast and reliable;
2) the filter stick is not damaged by non-contact detection;
3) the microwave signal frequency is high, the change speed is fast, the measured data is accurate, and the missing detection cannot be generated.
The embodiments of the present invention have been described in detail, and the present invention has been described by using the specific embodiments, and the description of the embodiments is only used to help understand the system and method of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. A filter stick on-line detection system is characterized by comprising an industrial personal computer, a data acquisition and processing device containing an analog-digital conversion module and a microwave detection device arranged between a strip making device and a cutter head of a filter stick forming machine;
the data acquisition and processing device is respectively in electrical signal connection with the industrial personal computer, the microwave detection device and a rejection valve controller of the filter rod forming machine;
the microwave detection device is used for detecting the section density of the filter stick strip produced on line;
the industrial personal computer is used for monitoring the detection state;
the data acquisition and processing device is used for acquiring detection signals sent by the microwave detection device and outputting control signals to the rejection valve controller.
2. The filter stick on-line detection system according to claim 1, wherein the microwave detection device comprises a microwave signal generator, a microwave resonant cavity, a microwave coaxial transmission cable, a microwave signal isolator, an amplifier assembly and a microwave signal detection part.
3. The filter stick on-line detection system according to claim 1, wherein the input port of the data acquisition and processing device is further used for receiving a production state signal of a forming machine set.
4. The filter stick on-line detection system according to claim 1, wherein the input port of the data acquisition and processing device is further used for receiving a cutting pulse signal of a forming machine set.
5. A filter stick on-line detection system according to claim 4, wherein a time delay device is arranged between the data acquisition and processing device and the rejection valve controller.
6. A filter rod online detection system according to claim 4, wherein a delay timing unit is integrated in the data acquisition and processing device.
7. The filter stick on-line detection system according to claim 1, further comprising a shutdown control circuit of the forming machine set;
and the output port of the data acquisition and processing device is electrically connected with the shutdown control circuit.
8. The filter stick on-line detection system according to claim 1, further comprising an alarm device;
the output port of the data acquisition and processing device is electrically connected with the alarm device.
9. The filter stick on-line detection system according to any one of claims 1 to 8, wherein the microwave detection device and the data acquisition and processing device are powered by a forming machine set.
10. A filter stick on-line detection system according to any one of claims 1 to 8, wherein the data acquisition and processing device is a single chip microcomputer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020209900.8U CN211856242U (en) | 2020-02-25 | 2020-02-25 | Filter stick on-line measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020209900.8U CN211856242U (en) | 2020-02-25 | 2020-02-25 | Filter stick on-line measuring system |
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| CN211856242U true CN211856242U (en) | 2020-11-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114271539A (en) * | 2021-12-27 | 2022-04-05 | 浙江中烟工业有限责任公司 | Function test method for filter stick forming machine |
| CN115266768A (en) * | 2022-08-01 | 2022-11-01 | 龙岩烟草工业有限责任公司 | Method and device for measuring quality of carbon particles of filter stick and computer equipment |
-
2020
- 2020-02-25 CN CN202020209900.8U patent/CN211856242U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114271539A (en) * | 2021-12-27 | 2022-04-05 | 浙江中烟工业有限责任公司 | Function test method for filter stick forming machine |
| CN114271539B (en) * | 2021-12-27 | 2024-04-02 | 浙江中烟工业有限责任公司 | Functional inspection method for filter stick forming machine |
| CN115266768A (en) * | 2022-08-01 | 2022-11-01 | 龙岩烟草工业有限责任公司 | Method and device for measuring quality of carbon particles of filter stick and computer equipment |
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