Online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes

Abstract

The present invention discloses an online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, which comprises: a material storehouse, a transmitter and a transmitting tube arranged in sequence, a microwave resonant cavity and a sorting device are arranged on the transmitting tube, a filter rod rejection tube is arranged at the end of the sorting device, a filter oscillator is connected to the microwave resonant cavity, an alarm module is connected to the sorting device, the filter oscillator, the microwave resonant cavity, the sorting device and the alarm module are connected to a controller, the microwave oscillator is used to generate microwave signals and transmit them to the microwave resonant cavity, the controller is used to obtain detection results according to the change of microwave electromagnetic field capacity parameters, control qualified filter rods to enter the receiver through the transmitting tube, unqualified filter rods are moved into the filter rod rejection tube by the sorting device, and the alarm module is controlled to alarm. The online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes provided by the present invention can realize real-time detection of all samples in the filter rod emission link, monitor the moisture content and density of the filter rods, and timely reject defective filter rods.

Description

Technical Field

[0001] The invention relates to the technical field of filter rod detection, and in particular to an online density and moisture content measurement, early warning and rejection system for a filter rod for cigarettes. Background Art

[0002] Cigarette filter rods mainly refer to filter rods made of cellulose diacetate tow and filter rod forming paper as the main raw materials, which are processed, rolled and cut into filter rods. They filter and absorb part of the smoke particulate matter (such as tar, nicotine, etc.) to reduce harmful substances in the smoke. In the production process of acetate fiber filter rods for cigarettes, the acetate fiber needs to be flattened and spread out before spraying triacetin. If the triacetin is sprayed unevenly after atomization, the hardness of the filter rod will not meet the standard, and the filter rod will have glue holes and dry rods. In addition, the filling amount, filling uniformity and moisture content of the cellulose diacetate tow will also affect the stability of the quality of the filter rod.

[0003] Since acetate fiber and applied triacetin require a certain curing time, the quality of random inspection of filter rods for cigarettes is lagging and random. Specifically, (1) Only after the curing time of the filter rods for cigarettes is reached can the effect of triacetin on the hardness of the filter rods be evaluated by random sampling, and whether there are glue holes or dry rods (filter rods without triacetin) can be found. The timeliness of quality traceability is poor; (2) Due to the constraints of the inspection frequency, the random inspection and control mode of indicators such as hardness cannot accurately represent the quality control level of the filter rod batch, and some unqualified filter rods may enter the downstream rolling link; (3) The filling amount, filling uniformity and moisture content of diacetyl cellulose tow will affect the stability of the filter rod adsorption efficiency, which is not conducive to the precise control of the sensory and safety indicators of cigarettes; (4) The existing filter rod launch link lacks online quality detection function, which brings uncontrollable external variables to the quality control of the cigarette rolling link.

[0004] Therefore, there is an urgent need for an online measurement, early warning and rejection system for density and moisture content of cigarette filter rods. Summary of the invention

[0005] The purpose of the present invention is to provide an online measurement, early warning and rejection system for the density and moisture content of cigarette filter rods to solve the problems in the above-mentioned prior art, improve the timeliness of quality traceability of the density and moisture content of cigarette filter rods, and increase the coverage of test samples.

[0006] The present invention provides a system for online measurement, early warning and rejection of density and moisture content of filter rods for cigarettes, which includes:

[0007] A material storehouse, a transmitter and a transmitting tube are arranged in sequence, the material storehouse is used to store filter rods, the transmitter is used to receive the filter rods in the material storehouse and send the received filter rods into the transmitting tube, a microwave resonant cavity and a sorting device are arranged in sequence on the transmitting tube, a filter rod rejecting tube is arranged at the end of the sorting device, the microwave resonant cavity is connected to a filter oscillator, the sorting device is connected to an alarm module, the filter oscillator, the microwave resonant cavity, the sorting device and the alarm module are connected to a controller, the microwave oscillator is used to generate a microwave signal and transmit the generated microwave signal to the microwave resonant cavity, the controller is used to control the microwave oscillator to work, and when the filter rod passes through the microwave resonant cavity, according to the change of the microwave electromagnetic field capacity parameter caused by the different density and / or moisture content of the filter rod, the detection result of each filter rod is obtained, the detection result at least includes density and moisture content, and the filter rod with qualified detection result is controlled to enter the receiver through the transmitting tube, the filter rod with unqualified measurement result is controlled to be moved from the sorting device to the filter rod rejecting tube, and the alarm module is controlled to alarm.

[0008] As described above, in the online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, preferably, the filter rod rejection tube is parallel to the launch tube, and the lower end of the filter rod rejection tube is located below the lower end of the launch tube.

[0009] As described above, in the online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, preferably, a storage box is provided below the filter rod rejection tube for collecting filter rods with unqualified measurement results.

[0010] As described above, in the online measurement, early warning and rejection system for density and moisture content of cigarette filter rods, preferably, the detection result also includes the coefficient of variation of the density and weight of the filter rods.

[0011] As described above, in the online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, preferably, a parameter threshold range for each of the test results is set in the controller, and when at least one test result exceeds the corresponding parameter threshold range, the test result of the filter rod is determined to be unqualified.

[0012] In the above-mentioned online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, preferably, the alarm module includes a light-emitting button arranged on the transmitter, and the controller is also used to count the alarm signals.

[0013] As described above, the online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, wherein preferably, the transmitting tube comprises a first horizontal portion, a vertical portion and a second horizontal portion which are arranged in sequence, wherein the first horizontal portion is connected to the transmitter, the microwave resonant cavity and the sorting device are arranged on the vertical portion, and the second horizontal portion is connected to the receiver.

[0014] As described above, in the online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, preferably, the first horizontal portion and the second horizontal portion are respectively located on both sides of the vertical portion, and the first horizontal portion is located below the vertical portion, and the second horizontal portion is located above the vertical portion.

[0015] In the above-mentioned online measurement, early warning and rejection system for density and moisture content of cigarette filter rods, preferably, the controller includes a programmable logic controller.

[0016] The present invention provides an online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes, which can realize real-time detection of all samples in the filter rod emission link, accurately measure the coefficient of variation of the axial density of a single filter rod while monitoring the moisture content and weight of the filter rods, and timely reject defective filter rods such as filter rods containing glue holes and dry rods, effectively solving the problems of poor timeliness of quality traceability of density and moisture content of filter rods for cigarettes, low coverage of detection samples, and improving the consistency and safety of smoking of cigarette products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the on-line measurement, early warning and rejection system for density and moisture content of a filter rod for cigarettes provided by the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of the measuring and sorting stations.

[0020] Figure numerals: 1-launcher, 2-material storage, 3-launching tube, 4-sorting device, 5-microwave resonant cavity, 6-filter rod rejection tube, 7-storage box. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0022] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0024] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0026] like Figure 1 and Figure 2As shown, the online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes provided in this embodiment comprises: a material storehouse 2, a transmitter 1 and a launch tube arranged in sequence, the material storehouse 2 is used to store filter rods, the transmitter 1 is used to receive filter rods in the material storehouse 2, and send the received filter rods into the launch tube 3, the launch tube 3 is sequentially provided with a microwave resonant cavity 5 and a sorting device 4, a filter rod rejection tube 6 is arranged at the end of the sorting device 4, the microwave resonant cavity 5 is connected to a filter oscillator (not shown), the sorting device 4 is connected to an alarm module (not shown), the filter oscillator, the microwave resonant cavity 5, the sorting device 4 and the The alarm module is connected to the controller, the microwave oscillator is used to generate microwave signals and transmit the generated microwave signals to the microwave resonance cavity 5, the controller is used to control the operation of the microwave oscillator, and when the filter rod passes through the microwave resonance cavity 5, the detection result of each filter rod is obtained according to the change of the microwave electromagnetic field capacity parameters caused by the different density and / or moisture content of the filter rod, the detection result at least includes the density and moisture content, and the filter rods with qualified detection results are controlled to enter the receiver through the transmitting tube 3, the filter rods with unqualified measurement results are controlled to be moved from the sorting device 4 to the filter rod rejection tube 6, and the alarm module is controlled to alarm.

[0027] Wherein, the test result also includes the coefficient of variation of the density and weight of the filter rod. Further, the controller includes a programmable logic controller (PLC). In a specific implementation, the parameter threshold range of each test result can be set in the controller, and when at least one test result exceeds the corresponding parameter threshold range, the test result of the filter rod is determined to be unqualified. The model of PLC can be, for example, S7-200. It should be noted that the present invention specifically defines the model of PLC and the set parameter threshold range.

[0028] Further, the filter rod rejection tube 6 is parallel to the launch tube 3, and the lower end of the filter rod rejection tube 6 is located below the lower end of the launch tube 3. A storage box 7 is provided below the filter rod rejection tube 6 for collecting filter rods with unqualified measurement results.

[0029] Furthermore, the alarm module includes a light-emitting button arranged on the transmitter 1, and the controller is also used to count the alarm signals.

[0030] Furthermore, the transmitting tube 3 includes a first horizontal portion 31, a vertical portion 32 and a second horizontal portion 33 which are arranged in sequence, wherein the first horizontal portion 31 is connected to the transmitter 1, the microwave resonant cavity 5 and the sorting device 4 are arranged on the vertical portion 32, and the second horizontal portion 33 is connected to the receiver.

[0031] Furthermore, the first horizontal portion 31 and the second horizontal portion 33 are respectively located on both sides of the vertical portion 32 , and the first horizontal portion 31 is located below the vertical portion 32 , and the second horizontal portion 33 is located above the vertical portion 32 .

[0032] During operation, after the filter rod enters the transmitter 1 through the material storage 2, it enters the microwave resonant cavity 5 through the transmitting tube 3; based on the microwave resonance principle, the microwave signal generated by the microwave oscillator is transmitted to the microwave resonant cavity 5. When the filter rod passes through the microwave resonant cavity 5, the filter rods with different densities and moisture contents cause the microwave electromagnetic field energy parameters to change. The controller calculates the density, density variation coefficient, moisture content and weight of each filter rod through the detection, analysis and processing of energy parameters; the controller controls the filter rods with glue holes or dry rods, moisture content or weight exceeding the standard and other defective filter rods to be moved from the sorting device 4 to the filter rod rejection tube 6 according to the set parameter threshold range. And they fall into the storage box 7 by gravity; at the same time, the sorting device 4 transmits the warning signal to the light button of the transmitter and counts; the filter rods that pass the online density and moisture content detection enter the receiver through the transmitting tube 3 and are sent to the corresponding cigarette rolling unit to complete the cigarette rolling.

[0033] The online measurement, early warning and rejection system for density and moisture content of filter rods for cigarettes provided by the embodiments of the present invention can realize real-time detection of all samples in the filter rod emission link, accurately measure the coefficient of variation of the axial density of a single filter rod while monitoring the moisture content and weight of the filter rods, and promptly reject defective filter rods such as filter rods containing glue holes and dry rods, effectively solving the problems of poor timeliness of quality traceability of density and moisture content of filter rods for cigarettes, low coverage of detection samples, and improving the consistency and safety of smoking of cigarette products.

[0034] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0035] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A system for online measurement, early warning and rejection of density and moisture content of filter rods for cigarettes, characterized in that: include: A material storehouse, a transmitter and a transmitting tube are arranged in sequence, the material storehouse is used to store filter rods, the transmitter is used to receive the filter rods in the material storehouse and send the received filter rods into the transmitting tube, a microwave resonant cavity and a sorting device are arranged in sequence on the transmitting tube, a filter rod rejecting tube is arranged at the end of the sorting device, the microwave resonant cavity is connected to a microwave oscillator, the sorting device is connected to an alarm module, the microwave oscillator, the microwave resonant cavity, the sorting device and the alarm module are connected to a controller, the microwave oscillator is used to generate a microwave signal and transmit the generated microwave signal to the microwave resonant cavity, the controller is used to control the microwave oscillator to work, and when the filter rod passes through the microwave resonant cavity, according to the change of the microwave electromagnetic field capacity parameter caused by the different density and / or moisture content of the filter rod, the detection result of each filter rod is obtained, the detection result at least includes density and moisture content, and the filter rod with qualified detection result is controlled to enter the receiver through the transmitting tube, the filter rod with unqualified measurement result is controlled to be moved from the sorting device to the filter rod rejecting tube, and the alarm module is controlled to alarm; A storage box is provided below the filter rod rejection tube for collecting filter rods with unqualified measurement results; The test results also include the coefficient of variation of the density and weight of the filter rod; The controller is provided with a parameter threshold range of each of the detection results, and when at least one detection result exceeds the corresponding parameter threshold range, the detection result of the filter rod is determined to be unqualified; The transmitting tube comprises a first horizontal portion, a vertical portion and a second horizontal portion which are arranged in sequence, wherein the first horizontal portion is connected to the transmitter, the microwave resonant cavity and the sorting device are arranged on the vertical portion, and the second horizontal portion is connected to the receiver; The first horizontal portion and the second horizontal portion are respectively located at both sides of the vertical portion, and the first horizontal portion is located below the vertical portion, and the second horizontal portion is located above the vertical portion.

2. The on-line measurement, early warning and rejection system for density and moisture content of cigarette filter rods according to claim 1 is characterized in that: The filter rod rejection tube is parallel to the launch tube, and the lower end of the filter rod rejection tube is located below the lower end of the launch tube.

3. The on-line measurement, early warning and rejection system for density and moisture content of cigarette filter rods according to claim 1 is characterized in that: The alarm module comprises a light-emitting button arranged on the transmitter, and the controller is also used for counting the alarm signals.

4. The on-line measurement, early warning and rejection system for density and moisture content of cigarette filter rods according to claim 1 is characterized in that: The controller comprises a programmable logic controller.

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