EP3297461A1 - Saugbandförderer und strangmaschine der tabak verarbeitenden industrie, verwendung und verfahren zum messen von materialeigenschaften eines materialstrangs der tabak verarbeitenden industrie - Google Patents
Saugbandförderer und strangmaschine der tabak verarbeitenden industrie, verwendung und verfahren zum messen von materialeigenschaften eines materialstrangs der tabak verarbeitenden industrieInfo
- Publication number
- EP3297461A1 EP3297461A1 EP16713474.1A EP16713474A EP3297461A1 EP 3297461 A1 EP3297461 A1 EP 3297461A1 EP 16713474 A EP16713474 A EP 16713474A EP 3297461 A1 EP3297461 A1 EP 3297461A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction belt
- strand
- measuring device
- tobacco
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/14—Machines of the continuous-rod type
- A24C5/18—Forming the rod
- A24C5/1857—Belt construction or driving means
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/14—Machines of the continuous-rod type
- A24C5/18—Forming the rod
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
- A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
- A24C5/3412—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by means of light, radiation or electrostatic fields
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/39—Tobacco feeding devices
- A24C5/399—Component parts or details, e.g. feed roller, feed belt
Definitions
- Suction belt conveyor and rod machine of the tobacco processing industry use and method for measuring material properties of a material strand of the tobacco processing industry
- the invention relates to a suction belt conveyor of a strand machine of the tobacco processing industry for conveying material, in particular tobacco, comprising at least one downwardly open strand guide channel bounded by two lateral channel cheeks and a suction belt along a conveying path, and a rod maker of the tobacco processing industry, a use and a method for measuring material properties of a material strand of the tobacco processing industry.
- the invention generally relates to the field of strand production of tobacco processing industry materials, and more particularly to the production of a tobacco strand.
- the quality of the strand material is usually monitored by means of various measuring devices, with particular attention being paid to properties such as quantity, density, moisture, etc. of the material.
- Various measuring methods are used for this purpose, for example optical measuring methods, HF measuring methods, microwave measuring methods or measuring methods using ⁇ -radiators. It is known to provide the measuring devices for determining the material properties in the case of tobacco strands, where the tobacco rod is already encased in the cigarette paper. This is partly due to the fact that the tobacco rod is relatively easy to reach there with a measuring device. On the other hand, the tobacco rod then already has its final form.
- the disadvantage of these known measuring methods is that the influence of the paper in the arrangement of the measuring devices must always be taken into account at this position.
- the object of the present invention is to provide an alternative possibility for measuring material properties of a material strand of the tobacco-processing industry.
- a suction belt conveyor of a rod making machine of the tobacco processing industry for conveying material, in particular tobacco comprising at least one downwardly open strand guide channel bounded by two lateral channel cheeks and a suction belt along a conveying path, which is further developed thereby; at least one electromagnetic measuring device is integrated into the channel cheeks of the suction belt conveyor at least at one position along the conveying path.
- a measurement of the material, in particular tobacco material is now provided for the first time already at a very early stage, namely in the suction belt conveyor, in which the material is not yet enveloped by a wrapping material, for example a wrapping paper.
- Saugband makeuper in extruding machines of the tobacco processing industry have a suction belt, which is perforated and acted upon from above with negative pressure or suction air.
- sporadic tobacco or other material from below in a stream of air on the suction belt wound up so that a layer of loose material accumulates or builds up on the underside of the suction belt and is held by the applied from above vacuum on the suction belt.
- This suction belt moves through a guide channel with side channel cheeks, so that a solid Cross section is defined for the aufhinerte material.
- the tobacco material passes into a format device in which it is wrapped with a wrapping material, for example a paper or an aluminum foil, and formed into a strand with a round or oval cross-section.
- the suction belt conveyor is a comparatively compact and solid unit.
- An example of a corresponding suction belt conveyor is known from DE 10 201 1 082 625 A1 of the Applicant, whose disclosure content is to be incorporated by reference in its entirety in the present application.
- the suction belt is a wearing part, which is replaced about every shift. For this reason, the strand guide channel is open at the bottom.
- the measurement already in the strand guide channel of the suction belt conveyor has the advantage that already at an early stage without disturbing influences, a measurement of material properties is possible.
- Material properties can z.
- An early determination of the density offers the advantage that deviations from the predefined values are quickly recognized and thus an immediate control z.
- electromagnetic measuring devices are used which operate in a frequency range between 100 kHz to 1 5 GHz.
- the electromagnetic measuring device is particularly preferably designed as a microwave measuring device having at least one resonator cavity, since microwave measuring technology offers a large number of possibilities for determining the properties of materials.
- the microwave measuring device preferably comprises at least one measuring opening aligned with the conveying path.
- a measuring opening can be provided from above, from the sides or in a U-shaped manner.
- the microwave measuring device preferably comprises two coaxial resonators which are opposite one another and in particular are aligned with one another and are embedded in the two opposite channel cheeks. This results in an optionally symmetrical arrangement on both sides of the guide channel in the suction belt conveyor, in which the guide channel itself is part of the resonator cavity between the two coaxial resonators. In this case, a coaxial resonator is excited, while the opposite coaxial resonator serves as a receiver.
- the coaxial resonators are preferably short-circuited ⁇ / 4 coaxial resonators.
- the at least one microwave measuring device in the two opposite channel cheeks in particular in addition, in each case has a resonator cavity with a rectangular cross-section, which are arranged in particular mutually aligned on both sides of the strand guide channel.
- Resonator cavities with rectangular cross section allow by the choice of the dimensions of the walls a very accurate adjustment of the tobacco material penetrating microwave field.
- An embodiment of a resonator cavity having a rectangular cross-section would be that the rectangular cross section in the direction of the conveying path is larger or smaller than vertically across the conveying path, the smaller of the cross sections having an extension of less than half a wavelength at a microwave measuring frequency. If the rectangular cross section in the direction of the conveying path is greater than vertically transversely to the conveying path, a geometry is selected in which the electric field in the tobacco material has a preferential component in the vertical direction (Y direction). Such a field has a very good penetration of the material strand result.
- the Z component of the electric field ie the component in the strand conveying direction
- this field penetrates the material well, and the measuring window along the strand conveying direction is narrower, so that even smaller structures can be resolved by rapid temporal changes. This is bought with a slightly higher extent of the stray field in strand direction.
- a cover is arranged above the openings of the resonator cavities and the suction belt, which is designed to be reflective for microwaves, wherein in particular a distance between the cover and the suction belt is a few millimeters, in particular less than 20 mm, in particular less than 6 mm ,
- This cover has the effect that the microwave measuring field and stray fields are limited vertically upward, which has a positive influence on stray fields of the microwave measuring field. For example, with a reduction in the distance of the lid from 18 mm to 4 mm, the maximum field strength of the stray field at a distance of one meter can be reduced by a factor of 4 or more.
- the at least one microwave measuring device in particular in addition, comprises an inverted "U" -shaped slotted rectangular resonator which encloses the strand guide channel on three sides.
- This particular inverted "U" -shaped configuration of a rectangular resonator is structurally conditioned by the fact that the guide channel of the suction belt conveyor must be open at the bottom to allow a Saugband cel.
- the coherent resonator cavity extends from the side in a channel cheek across the guide channel to In both channel cheeks, the resonator cavity opens in two slots to the guide channel, whose dimensions in the direction of conveyance are narrower than the dimensions of the resonator cavity itself, such that a taper of the resonator cavity to the center, So to the guide channel out, takes place.
- Such a "slotted rectangular resonator” has a very high quality and a good penetration of the measuring field into the guide channel and, since it also directly reaches the tobacco material, such a resonator has a particularly high sensitivity to fluctuations in the material properties of the material strand.
- the resonator cavity In the case of the slotted rectangular resonator, it is preferably further provided for the resonator cavity to narrow in its cross-section, based on the orientation of the strand guide channel, from the outside to an opening towards the channel cheek.
- microwave measuring devices which can be used according to the invention described so far are preferably operated in transmission. Also, a reflection measurement, in which only one channel cheek, a resonator is embedded and the other channel cheek reflects, is possible and provided within the scope of the invention. This applies both to the case of an open coaxial resonator and to resonators with a rectangular cross-section.
- Microwave measuring devices emit a portion of their power to the environment, depending on how they are constructed. According to the specifications of different standards (EU: TBD, USA: TBD) the power of the microwave radiation must not exceed certain limits. In microwave measuring devices with a closed resonator, no modes can propagate in the opening of the microwave measuring device through which the strand is guided. This is different with partially open microwave measuring devices such. B. the slotted rectangular resonator. Here, modes can spread through the openings, which can lead to emissions that are well above the limits to be complied with.
- the resonators are excited by means of two symmetrically arranged inputs and outputs. In principle, different modes can be stimulated. It is desirable to excite a mode whose electric field is parallel to the strand in the measuring range, since it has been shown that a direction perpendicular to the strand is field excited excitable modes in the channel cheek. This is for example given in the cylindrical TM010 mode or in the related TE 1 10 mode in the slotted rectangular resonator.
- the Applicant has found that it is the perpendicular to the strand oriented electric field, which generates propagatable modes in the channel cheek and thus responsible for the radiation.
- the resonator has three input and output antennas, of which two antennas are arranged symmetrically to both sides of the strand guide channel and the third antenna in a plane of symmetry of the Resonatorcavity above the strand guide channel, wherein the two symmetrically arranged antennas are excited in phase and the middle antenna serves as Auskoppelantenne, or the middle antenna is excited and the two symmetrically arranged antennas (268, 269) serve as Auskoppelantennen.
- the symmetrical arrangement of the antennas together with the in-phase excitation of the symmetrical antennas in the two sides of the slotted rectangular resonator and a coupling in the upper region in the plane of symmetry offers the advantage that no field distributions are excited which have horizontal field components perpendicular to the strand Radiations can be significantly reduced.
- the in-phase excitation is carried out for example by a signal division with a Wilkinson divider, while the field at a third goal or antenna, arranged centrally in the plane of symmetry, is to tap.
- the central gate or the central antenna can be excited and the Signal at the two symmetrical gates (antennas) are in phase tapped.
- one or both channel cheeks have one or more microwaves absorbing in the conveying direction of the suction belt downstream and / or upstream of the at least one resonator cavity one or more microwaves incorporated in the channel cheek or channel cheeks.
- These may be foam materials, rubber layers, thin films or the like with corresponding absorption properties, for example based on silicones or polyanilines, as described, for example, in L. de Castro Folgueras et al., "Dielectric Properties of Microwave Absorbing Sheets Produced with Silicone and Polyaniline ", Materials Research 2010, 13 (2), pages 197 to 201.
- Other materials with sufficiently high absorption properties are also suitable.
- a power and / or measuring electronics is arranged on the suction belt conveyor and thermally coupled to the suction belt conveyor. This ensures that the microwave measuring device, which has a comparatively low power requirement due to its compactness, is provided with electronics which are kept at a substantially constant temperature by thermal coupling with the suction belt conveyor, which constitutes a high thermal mass.
- the electromagnetic measuring device can also be designed as a capacitive measuring device. Due to the rectangular dimensions of the suction belt conveyor, the capacitive measuring device can be considered as a kind of plate capacitor. It is conceivable that di-electric cavities are provided on both sides of the channel cheek, on which electrodes in the form of metal surfaces are applied.
- the object on which the invention is based is also achieved by a rod making machine of the tobacco-processing industry, in particular tobacco rod mill. ne, solved with a Saugbandplier invention described above.
- the object underlying the present invention is achieved by a use of a microwave measuring device in a suction belt conveyor according to the invention described above a strand machine of the tobacco processing industry for measuring the material properties of a tobacco on a suction belt from below and held with suction on the suction belt held tobacco material.
- the object underlying the invention is also achieved by a method for measuring material properties of a strand of material, in particular tobacco rod, the tobacco processing industry, wherein the material properties of the suction belt of a suction belt conveyor according to the invention previously described verkauerten from below and with the suction belt along a Be conveyed through a guide channel of the suction belt conveyed material along the conveying path in the guide channel by means of a microwave measuring device of the suction belt conveyor or in Saugband makeuper be measured.
- the resonant method is preferably used as the method since, compared to the broadband method, the material is characterized over a certain frequency range, the resonant method only measures at the resonant frequency. It is thus not only faster, but - at least at this frequency - also much more accurate.
- the measurement is carried out as a transmission measurement, in which, in particular in the case of a resonant method, measurement is always carried out at the maximum of the signal level, which simplifies the measurement value acquisition.
- the loss measurement is more accurate and less sensitive here. the external wiring.
- FIG. 2 a), b) show schematically a perspective individual representation (a) and a cross-sectional representation (b) of a strand guide channel provided in the known cigarette rod machine of FIG. 1, FIG.
- Fig. 6a) to e) is a schematic representation of a further alternative
- Embodiment of a suction belt conveyor with a slotted rectangular conveyor with detailed representations, field distribution and radiation characteristics,
- Fig. 7a) to e) are schematic representations of the control of a corresponding slotted rectangular resonator with radiation characteristics and schematic representations of absorption elements for the channel cheek of Saugband makeupers invention, a schematic representation of an embodiment egg nes Saugbandageers with a capacitive Messeinrich device with field distribution.
- a known cigarette rod machine according to DE 10 201 1 082 625 A1 is shown schematically, the structure and operation of which will be explained below.
- a pre-distributor 2 is charged in portions with tobacco fibers (not shown in the figures).
- a removal roller 3 in the pre-distributor 2 supplies a reservoir 4 with tobacco fibers from the pre-distributor 2.
- From the reservoir 4 takes a steep conveyor 5, the tobacco fibers and Charges a stowage 6.
- From the stowage 6 takes a pin roller 7 a substantially uniform stream of tobacco fiber, which is knocked out by a rollover roller 8 of the pins of the pin roller 7 and thrown onto a circulating at a constant speed spreading cloth 9.
- a tobacco fleece is formed from the tobacco stream.
- the tobacco fleece is thrown into a viewing device 1 1, which consists essentially of an air curtain, the larger or heavier tobacco particles pass, while all other tobacco particles are lowered by the air in a funnel formed by a pin roller 12 and a wall 1 3 funnel 14.
- the tobacco fibers are conveyed from the hopper 12 to Saugband makeuper 160, in a strand guide channel 16 and thrown against a bottom of the strand guide channel 16 forming lower strand of an air-permeable, acted upon from its back with negative pressure, endless circulating suction belt 17, on which a strand-shaped tobacco fiber cake is thrown from the tobacco fibers, which is thus held at the lower run of the suction belt 17 by means of sucked air into a vacuum chamber 18. Due to the circulating suction belt 17, the tobacco fiber cake hung or accumulated therein is conveyed as a strand hanging along the strand guide channel 16. The lower strand of the suction belt 17 extends through the strand guide channel 16 from its beginning, where the strand formation zone is located, in the illustrated embodiment, to a Egalisator or trimmer 19 for the removal of excess tobacco fibers.
- the tobacco fiber strand thus formed is placed on a run in synchronism cigarette paper strip 21.
- the cigarette paper strip 21 is withdrawn from a reel 22, passed through a printing unit 23 and placed on a driven format tape 24.
- the format tape 24 transports the tobacco rod together with the cigarette paper strip 21 through a format 26, in which the cigarette paper strip 21 is folded around the tobacco rod, so that only a narrow edge protrudes, which is glued in a known manner by a Glimapparat, not shown.
- the adhesive seam thus formed is then closed and dried by a Tandemnahtplätte 27.
- the cigarette rod 28 thus formed passes through a measuring device 29 and is then cut by a knife apparatus 31 into double-length cigarettes 32.
- the double-length cigarettes 32 are transferred from a controlled-arm transfer device 34 to a transfer drum 36 of a filter attachment machine 37, on the cutting drum 38 they are divided with a circular blade in single cigarettes.
- Conveyor belts 39, 41 convey excess tobacco fibers separated from the trimmer 19 into a container 42 arranged below the storage container 4, from which these excess tobacco fibers are removed again from the vertical conveyor 5 as recycled tobacco.
- the module comprising the strand guide channel 16 has a frame 46, by means of which this assembly is arranged in the machine shown in FIG.
- the strand guide channel 16 is open at the bottom and has two spaced-apart lateral cheeks 1 6a, 16b. Further, in Fig. 2b of the (overhead) bottom of the strand guide channel 16 forming lower strand 17a of the endless circulating suction belt 17 (Fig. 1) is shown schematically in cross section.
- the cavity 1 6c and thus also the cross section of the strand guide channel 16 is bounded by the two lateral channel cheeks 16 a, 16 b and the lower strand 17 a of the suction belt 17.
- the distance between the two lateral channel cheeks 16a, 16b of the strand guide channel 16 determines the width of the strand-shaped tobacco cake which has appeared in the cavity 16c of the strand guide channel 16.
- At least one of the two lateral cheeks 16a, 16b is adjustable transversely to the strand conveying direction according to the arrow X shown in FIG. 2a, which is schematically indicated by the double arrow Y in FIGS. 2a) and 2b).
- the adjustability of at least one of the two lateral cheeks 16a, 16b can be their distance from each other and thus the clear width of the cavity 1 6c of the strand guide channel 16 change, which also causes a corresponding change in the width of the cavity 16c of the strand guide channel 16 shy stranded tobacco cake.
- the change in width also has an influence on the loading height.
- the adjustment of the lateral cheeks 1 6a, 16b is effected by means of a drive device 48, which is controlled by a subsequent control in which the distance between the two channel cheeks 16a, 16b and the clear width of the cavity 16c of the strand guide channel 16 forms the manipulated variable.
- the previously measuring device 29 is preferably formed, the cross section, the ovality or roundness and / or the density of the cigarette rod 28 and / or the weight of the cigarettes 32 and / or the weight of the cigarette rod 28 per unit length and / or the Faser Stahlllgrad in the cigarette rod 28 and / or in the cigarettes 32 to capture and deliver a corresponding output signal A.
- This output signal A is transmitted to a controller 50.
- a distance sensor 52 is provided on the strand guide channel 16, which detects the accumulation height of the strand-shaped tobacco cake in the strand guide channel 16 and transmits a corresponding output signal B to the controller 50.
- the distance sensor 52 is disposed upstream of the trimmer 1 9.
- a further distance sensor 56 is provided, with the aid of which the respective actual value for the clear distance between the two lateral cheeks 1 6a, 16b of the strand guide channel 16 and thus the width of the cavity 1 6c detected and a corresponding signal F to the adjusting device 54 is transmitted.
- the controller 50 processes, as a further input variable, a setpoint signal C, by means of which a corresponding desired value is specified for the parameter or parameters to be controlled. These three signals A, B and C are processed in the controller 50, which as a result produces an output signal D in order to produce a downstream adjusting device 54. to address speaking.
- Fig. 3 shows schematically a first embodiment according to the invention in section a Saugbandier with in the channel cheeks 102, 1 04 embedded coaxial resonators 206, 207. These may, but need not, as the channel cheeks 16a, 16b of FIG. 2 may be formed. Preferably, they are solid outside of microwave measuring devices.
- a section of a strand guide channel 100 is shown, wherein the strand conveying direction 108 or the conveying path 108 is marked with arrows.
- a suction belt 106 which is moved in the strand conveying direction (arrow) and is aufauert on the material, up to a filling level 1 12, which, as is shown from below, also a filling depth extends.
- a cover 1 1 0 is arranged, the radiation of a microwave measuring field from the coaxial resonators 206, 207 limited upwards.
- the rear channel cheek 102 is solid, the front channel cheek 1 04 semi-transparent shown.
- the cover 1 10 is actually in one piece and does not consist of two halves, as the schematic representation in Fig. 3a) represents only for clarity.
- the coaxial resonators 206, 207 of the microwave measuring device 200 each have a resonator cavity 202, 203, as can be clearly seen in FIG. 3b). Centered in the resonator cavity 202, 203, a coaxial antenna 208, 209 is arranged in each case. Toward the guide channel 100, the resonator cavities 202, 203 open with openings 204, 205, so that an electromagnetic microwave field indicated by arrows penetrates into the guide channel 100.
- a coordinate system is shown in each case, in which the Z-direction coincides with the conveying path 108, the X-direction in the horizontal direction is perpendicular to the Z-axis and the Y-direction in the vertical direction.
- the coaxial resonators 206, 207 are preferably short-circuited ⁇ / 4 coaxial resonators.
- the maximum field strength occurs at the interface of the open end of the respective coaxial resonator 206, 207, and attenuates toward the center of the guide channel 100.
- the coaxial resonators 206, 207 have a radiation characteristic with a maximum pronounced in the Z and X directions.
- the extent of the resonator cavities 222, 223 in the direction of the conveying path 108 is significantly greater than transverse to it, so that an electric field with predominant Y component (E y ) is formed.
- the respective antennas 228, 229 penetrate vertically into the resonator cavities 222, 223 from below to generate the dominant Y component microwave field.
- the field strength distribution of the E y field component is shown in Fig. 4b). There is good penetration of the guide channel 100.
- the vertical dimension of the resonator cavities 222, 223 is significantly smaller than half the wavelength of the microwave measurement field used, between 4 and 6 GHz, while the dimension in the strand direction is greater than half a wavelength, thus a mode whose field component can propagate in the Y direction, vertical to the line direction (Z direction).
- FIG. 5 schematically shows a further embodiment of an inventive
- these are again two rectangular resonators 246, 247 with rectangular resonator cavities 242, 243 embedded in the channel walls 102, 104, which, as in FIGS previous embodiments also, aligned with each other and penetrate the guide channel 100 at the height of the réelleschangerten on the suction belt 106 material.
- the rectangular resonator cavities 242, 243 now have a small extension of less than one half wavelength of the microwave array in the line direction and more than half a wavelength across it in a vertical direction.
- the antennas 248, 249 are arranged symmetrically on both sides with their antenna cables 248a, 249a and project into the resonator cavities 242, 243 in the strand direction, ie in the Z direction. It is excited as a main component of a field with electric field lines in the Z direction (E z ). This penetrates in each case at the locations of the openings 244, 245 to the guide channel 100 in the material in the guide channel 100 and weakens towards the center down. Overall, the material is well penetrated by the electric field and the measurement window in the Z direction is narrower than in the E y resonator of Fig. 4. However, the X component of the electric field propagates in the channel cheek and leads, as in Fig. 5c) can be seen, based on the radiation characteristic shown there, to a scattering radiation in the Z direction.
- Fig. 6 schematically illustrates another embodiment with a microwave measuring device 260 having a slotted rectangular resonator 266 which invertedly extends "U" around the guide channel 100 and the material below the suction band 106 and is open at the bottom 6a), slot-shaped openings 265 can be seen, which define a very narrow measuring window in the Z-direction Center, so the guide channel 100 with the material out, the cross section of the resonator cavity 262 narrows in the Z direction by means of a collar 272.
- the couplings 268a, 269a of two antennas 268, 269 are shown, which project into the resonator cavity 262 in the Z direction.
- the microwave field in the resonator is formed in the entire U-shaped resonator.
- Fig. 6c shows a cross section in the YZ plane through the guide channel 100 and the slotted rectangular resonator 266, in which the execution of the collar 272 is clearly visible, as well as the arrangement of the z-direction in the resonator cavity 266 protruding antenna 269 and outside of the antenna cable 269.
- Fig. 6d shows the field distribution of the electric field strength in frontal view with the cross-sectional plane in the center of the slot 265 for the resonator 266 of FIG. 6a) to 6c).
- the electric field in the illustrated structure decreases downwardly and toward the center, but has the advantage of being immediately adjacent to the material and having no design spacing, except for microwave transmissive windows which prevent fouling of the resonator cavity 262.
- the sensor has the highest sensitivity of all microwave measuring devices shown so far.
- the radiation shown in Fig. 6e) is greatest in the Z direction and has, for comparison with the other embodiments, a maximum radiation.
- FIGS. 7 a) to 7 c Different configurations of the driving of the slotted rectangular resonator 266 are shown in FIGS. 7 a) to 7 c).
- a symmetric resonator such as the slotted rectangular resonator 266, two modes capable of propagation are excited: the common mode, where the electric field lines (E) in the strand are (mostly) parallel to it and the magnetic field (H) encloses both antennas, as well as the "push-pull” mode, in which the electric field lines (mainly) orthogonal to the strand, run between the antennas ..
- the actual field distribution is finally a superposition of the two modes from each other could be DC or push-pull mode when input and output antenna (coupling element) in common mode (Fig.7a) or push-pull (Fig. 7b) are excited. It has been shown that I act in the push-pull mode around the mode, which excites in the channel cheek so-called plate modes that can propagate and radiate here, as shown in Fig. 7b).
- FIG. 7 c shows an exemplary embodiment according to the invention in which the knowledge about the in-phase excitation for reducing the radiation is implemented advantageously.
- the two symmetrical arranged antennas 268, 269 are excited equally (eg, via a simple signal division by Wilkinon divider) and effectively represent one electrode (input or output).
- the other electrode is inserted in the plane of symmetry as shown in Fig. 7c).
- the dimensions of the slotted rectangular resonator 266 range from about 50 to 100 mm in the Z direction, also 50 to 1 00 mm in the Y direction and about 70 mm in the X direction. Other dimensions are of course also possible and feasible according to the invention.
- FIGS. 8a), 8b show a schematic sectional representation of the guide channel 100 with channel cheeks 102, 104, in which oppositely absorbing elements 300, 302 made of a material having a complex dielectric constant are embedded, for example a microwave-absorbing rubber membrane. material, foam or the like. These remove power from the radiated microwave field, so that the radiation is reduced to the outside.
- Fig. 8b) shows the arrangement of such absorbing elements 300, 302, 304, 306 upstream and downstream of the slotted rectangular resonator 266 in the channel cheeks 102, 104.
- the corresponding absorbing elements 300 to 306 are, for example, in cavities specially created for this purpose Insert the channel cheeks 1 02, 104 along the propagation direction.
- the achieved attenuation increases with size and layer thickness of the absorbent material.
- a fundamental mode of the TEM plate mode can be attenuated by more than 10 dB in the propagation direction.
- FIG. 9 is a plan view of a suction belt conveyor according to the invention with a strand guide channel 1 00, which is bounded by the channel cheeks 1 6a, 16b, and a capacitive measuring device 320 shown.
- the capacitive measuring device comprises two recesses (cavities) 321, 322 provided opposite one another in the channel cheeks 16a, 16b and filled with air or dielectric. In each recess, an electrode 323, 324 is inserted. As can be seen from FIG. 9, the structure of the capacitive measuring device is similar to a plate capacitor.
- the effective measurement window is determined by the field lines, which are shown by arrows in FIG. 9). These field lines also determine the actual effective measurement capacity. The remaining field lines are to be allocated to stray capacities.
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Abstract
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DE102015105353.5A DE102015105353A1 (de) | 2015-04-09 | 2015-04-09 | Saugbandförderer und Strangmaschine der Tabak verarbeitenden Industrie, Verwendung und Verfahren zum Messen von Materialeigenschaften eines Materialstrangs der Tabak verarbeitenden Industrie |
PCT/EP2016/057302 WO2016162292A1 (de) | 2015-04-09 | 2016-04-04 | Saugbandförderer und strangmaschine der tabak verarbeitenden industrie, verwendung und verfahren zum messen von materialeigenschaften eines materialstrangs der tabak verarbeitenden industrie |
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EP3297461B1 EP3297461B1 (de) | 2022-08-24 |
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US (1) | US11178901B2 (de) |
EP (1) | EP3297461B1 (de) |
JP (1) | JP7115854B2 (de) |
KR (1) | KR102624354B1 (de) |
CN (1) | CN107529813B (de) |
DE (1) | DE102015105353A1 (de) |
PL (1) | PL3297461T3 (de) |
WO (1) | WO2016162292A1 (de) |
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DE102017123503A1 (de) * | 2017-10-10 | 2019-04-11 | Hauni Maschinenbau Gmbh | Verfahren und System zum Herstellen von stabförmigen Produkten der Tabak verarbeitenden Industrie |
DE102018105111A1 (de) | 2018-03-06 | 2019-09-12 | Hauni Maschinenbau Gmbh | Saugbandförderer und Strangmaschine der Tabak verarbeitenden Industrie sowie Verwendung einer Messeinrichtung in einem Saugbandförderer einer Strangmaschine der Tabak verarbeitenden Industrie |
IT201800003717A1 (it) * | 2018-03-19 | 2019-09-19 | Gd Spa | Stazione di trasporto e ispezione di un semilavorato dell’industria del tabacco |
DE102018116533A1 (de) * | 2018-07-09 | 2020-01-09 | Hauni Maschinenbau Gmbh | Messvorrichtung für einen Saugbandförderer und Saugbandförderer mit einer Messvorrichtung |
CN112740022B (zh) * | 2018-09-21 | 2024-05-24 | 吉地股份公司 | 用于检测烟草工业的产品的性质的电磁检测器 |
EP3852557B1 (de) | 2018-09-21 | 2023-09-06 | G.D S.p.A. | Gerät zur förderung und prüfung eines halbzeugs der tabakverarbeitenden industrie |
CH715607A1 (de) * | 2018-12-03 | 2020-06-15 | Koch Roger | Zigarettenmaschine und Verfahren zur Herstellung von Zigaretten. |
DE202019103894U1 (de) * | 2019-07-15 | 2019-09-23 | Tews Elektronik Gmbh & Co. Kg | Zigarettenmaschine mit einem Saugbandförderer |
RU2736959C2 (ru) * | 2019-12-25 | 2020-11-23 | Хауни Машиненбау Гмбх | Измерительное устройство для вакуумного ленточного транспортера и вакуумный ленточный транспортер с измерительным устройством |
CN112089084B (zh) * | 2020-09-30 | 2024-08-09 | 太原科技大学 | 烟叶松散振动单元及烟叶出料装置和生产线 |
CN115626419B (zh) * | 2022-11-01 | 2024-02-20 | 邳州市新世界木业有限公司 | 一种木工机械输送带 |
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DE3207124A1 (de) * | 1981-03-21 | 1982-09-30 | Hauni-Werke Körber & Co KG, 2050 Hamburg | Verfahren und maschine zum herstellen von stabfoermigen rauchartikeln |
US4474190A (en) | 1981-03-21 | 1984-10-02 | Hauni-Werke Korber & Co. Kg | Method and apparatus for regulating the operation of machines for the production of cigarettes or the like |
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JPS60234575A (ja) | 1984-05-08 | 1985-11-21 | 日本たばこ産業株式会社 | シガレツト製造機の中味たばこ量制御装置 |
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DE3705576A1 (de) * | 1987-02-21 | 1988-09-01 | Hauni Werke Koerber & Co Kg | Verfahren und anordnung zum bilden eines stranges aus tabak |
DE3725366A1 (de) | 1987-07-31 | 1989-02-09 | Hauni Werke Koerber & Co Kg | Vorrichtung zur messung der dichte eines tabakstranges |
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DE10117081A1 (de) | 2001-04-06 | 2002-10-10 | Hauni Maschinenbau Ag | Vorrichtung und Verfahren zur Erzeugung einer Aussage über die Eigenschaft(en) eines Faserstranges |
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DE202005001756U1 (de) * | 2004-02-12 | 2005-05-04 | Trützschler GmbH & Co KG | Mikrowellensensor zur Messung einer dielektrischen Eigenschaft eines Produkts |
DE102004063228B4 (de) * | 2004-12-22 | 2007-06-28 | Hauni Maschinenbau Ag | Meßvorrichtung und -verfahren zur Bestimmung einer dielektrischen Eigenschaft, insbesondere der Feuchte und/oder Dichte, eines Produkts |
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DE102013213936A1 (de) * | 2013-07-16 | 2015-01-22 | Hauni Maschinenbau Ag | Anordnung und Verfahren zur Überprüfung von stabförmigen Artikeln der Tabak verarbeitenden Industrie |
-
2015
- 2015-04-09 DE DE102015105353.5A patent/DE102015105353A1/de active Pending
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2016
- 2016-04-04 EP EP16713474.1A patent/EP3297461B1/de active Active
- 2016-04-04 KR KR1020177032194A patent/KR102624354B1/ko active IP Right Grant
- 2016-04-04 WO PCT/EP2016/057302 patent/WO2016162292A1/de unknown
- 2016-04-04 CN CN201680020944.2A patent/CN107529813B/zh active Active
- 2016-04-04 JP JP2017552801A patent/JP7115854B2/ja active Active
- 2016-04-04 PL PL16713474.1T patent/PL3297461T3/pl unknown
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US20180027868A1 (en) | 2018-02-01 |
CN107529813B (zh) | 2021-10-01 |
PL3297461T3 (pl) | 2023-01-16 |
KR20170134696A (ko) | 2017-12-06 |
EP3297461B1 (de) | 2022-08-24 |
WO2016162292A1 (de) | 2016-10-13 |
CN107529813A (zh) | 2018-01-02 |
JP7115854B2 (ja) | 2022-08-09 |
DE102015105353A1 (de) | 2016-10-13 |
US11178901B2 (en) | 2021-11-23 |
JP2018511330A (ja) | 2018-04-26 |
KR102624354B1 (ko) | 2024-01-11 |
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