EP2641481B1 - Filterstabherstellmaschine und Verfahren zum Betrieb einer Filterstabherstellmaschine der Tabak verarbeitenden Industrie - Google Patents

Filterstabherstellmaschine und Verfahren zum Betrieb einer Filterstabherstellmaschine der Tabak verarbeitenden Industrie Download PDF

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Publication number
EP2641481B1
EP2641481B1 EP13158885.7A EP13158885A EP2641481B1 EP 2641481 B1 EP2641481 B1 EP 2641481B1 EP 13158885 A EP13158885 A EP 13158885A EP 2641481 B1 EP2641481 B1 EP 2641481B1
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EP
European Patent Office
Prior art keywords
strand
material strip
wrapping material
image data
filter rod
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Application number
EP13158885.7A
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German (de)
English (en)
French (fr)
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EP2641481A1 (de
Inventor
Ingo Drews
Hans-Henning Kock
Siegfried Hapke
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Koerber Technologies GmbH
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Hauni Maschinenbau GmbH
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    • 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
    • A24C5/005—Treatment of cigarette paper
    • 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
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/025—Final operations, i.e. after the filter rod forming process
    • A24D3/0258—Means for making grooves
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0295—Process control means

Definitions

  • the invention further relates to a corresponding filter rod manufacturing machine of the tobacco processing industry with a corresponding embossing device for a first wrapping material strip.
  • CP filter Combined Performance Filter
  • the Chinese utility model application CN 2588802 Y discloses a groove filter manufacturing machine for making cigarette filter rods with diagonal grooves.
  • a paper feed on one side of a machine frame is doubled and provided as a paper feed a Spezialbobine, on the upper part of an embossing device is mounted.
  • the embossing device has a double roller pair with diagonal groove embossing, a Saugluft- / Textil arrangementsnut, paper guide rollers and a Textil arrangementsnut and an infrared switch. Grooved filter rods of different embossing can be produced.
  • the double roller pair for embossing is convex-concave.
  • Cameras or CCD line scan cameras wherein the rod-shaped or strand-like article can be conveyed through between the image sensors arranged opposite to one another, wherein the image sensors are connected to an evaluation device in order to transmit the image data captured by the surface of the rod-shaped or strand-shaped article to the evaluation device, wherein the evaluation device is connected to an actuator of an additive supply device, so that a signal can be transmitted to the actuator as a function of the evaluation of the image data by means of the evaluation device, and n After transmission of a signal to the actuator, the supply of additive in the rod-shaped or strand-shaped article changeable, in particular adjustable, is.
  • EP 0 880 905 A1 discloses a cigarette and a device for producing cigarettes, wherein an embossing device is provided to emboss a cigarette paper which is wound around the cigarette.
  • WO 2011/042354 A1 discloses a printed and embossed wrapping material for a smoking article.
  • WO 2011/117106 A1 discloses the possibility of embossing cigarette paper with an embossing device outside a cigarette making machine.
  • DE 103 58 670 A1 discloses a method and apparatus for inspecting the surface of a moving strand of material of the tobacco processing industry, wherein indicia are printed on wrapping material strips.
  • EP 2 080 439 A1 discloses an optical system by means of which tobacco products are visually checked. A small section of the cigarette surface is inspected, with a cross-axial promotion of the cigarette rod.
  • the term embossing of the first wrapping material strip includes that the formed embossing structure has grooves arranged in the longitudinal direction of the bar-shaped article. In a direction transverse to the longitudinal axis of the rod-shaped article thus results in a kind of wave structure of the first wrapping material strip.
  • the invention is based on the idea that for the production of high quality filter rods, which have a first wrapping material strip, which was provided with an embossed structure, by acquiring image data and determining a quality and / or a position of the embossed structure on the operation of the filter rod manufacturing machine or Parameters can be intervened in the operation of the filter rod manufacturing machine, so as to improve the quality or the quality of the filter rod produced.
  • the image data comprise images along the circumferential direction of the strand or the filter rod, in particular of the entire circumference, wherein the recording of the images along the circumferential direction is clocked at a predeterminable first frequency.
  • the recording of the image data or the taking of images is preferred with electromagnetic radiation in the visible range of the electromagnetic spectrum or in adjacent, invisible to the human eye areas, such as in the infrared or ultraviolet range.
  • the image data is preferably recorded in a reflection process, ie light is measured which is reflected by the surface of the strand or of the coated article.
  • light from the light source is directed onto the surface of the cladding material of the filter rod or strand which is reflected by the cladding material so that the reflected light is detected by one or more light sensors.
  • an image data acquisition device is used within the scope of the invention.
  • the image data acquisition device is preferably designed as a CCD camera or preferably comprises one or more cameras, which are further preferably arranged around the filter rod or strand to be tested in a circular or part-circular manner.
  • the article to be tested is conveyed through, for example, to an optical image data acquisition device, in particular a multi-channel optical image data acquisition device, which may be of annular design.
  • the signal of each channel of the image data acquisition device corresponds to a course of an optical nature of a strip-shaped region or a partial region of the surface of the article in the longitudinal axial conveying direction.
  • the image data acquisition device recognizes changing gray levels or color values in advancing the filter rod or filter strand.
  • the individual channels of the image data acquisition device are each directed to a narrow portion along the circumference of the rod-shaped or strand-shaped article when it is conveyed longitudinally axially.
  • Every channel of the Image data acquisition device thus measures how the brightness of the surface of the wrapping material strip, and in this case preferably of the first and optionally the second wrapping material strip of the filter rod or filter strand in the section of the rod-shaped or strand-shaped article viewed from the respective channel with time during the promotion at the Image data acquisition device changed over or through.
  • the surface of the filter rod or filter strand is scanned in two dimensions, namely transversely, ie preferably perpendicular, to the transport direction by means of the plurality of channels of the image data acquisition device and in the transport direction by means of a temporal resolution.
  • the temporal resolution is given by the first predetermined frequency.
  • a strand of the tobacco-processing industry namely a filter strand
  • the first UmhüllungsmaterialstONE is wrapped around the filter material, at least partially embossed and possibly around this first UmsüllungsmaterialstMail a second wrapping material strip is wound outside, promoted at a conveying speed of 10 m / s and measure this.
  • an image is taken at a certain time along the circumference of the strand, for example with an image data acquisition device, the two in the transverse axial direction or in the circumferential direction arranged one behind the other CCD sensors having a number of 70 corresponding sensors, so that 140 sensors are provided for the entire circumference.
  • the image data of these 140 sensors are read, for example, with a second clock frequency of 10,000 MHz.
  • the first predeterminable frequency may for example be such that in the conveying direction every 0.2 mm an image of the circumference of the rod-shaped or strand-shaped article is made.
  • digitized gray values or color values are detected as image data over the circumference of the filter rod or filter strand by means of the image data acquisition device in order to detect or indicate the quality and / or the position of the embossed structure of the first wrapping material strip on the basis of the intensity or the intensity distribution of the gray values or the color values determine.
  • controlling the operation of the filter rod making machine includes cutting the cut of the strand, ejecting a defective filter rod, changing a parameter in the production of the strand, and / or changing a parameter for embossing the first wrapping material strip.
  • this measure a high quality of the produced filter rod or filter strand of the tobacco-processing industry is guaranteed.
  • the image data are processed to determine the quality and / or position of the embossed structure.
  • a sum of gray values or color values in the conveying direction and / or along the circumferential direction of the strand is carried out for processing the image data.
  • the quality of the embossing of the embossed structure can be determined particularly well.
  • a transformation can take place, for example, by folding the image data with a readout frequency of the image data acquisition device or a sensor arranged in the image data acquisition device or a corresponding line scan camera or a CCD sensor.
  • a Fourier transformation in particular a so-called fast Fourier transformation (FFT, of Fast Fourier Transformation), can additionally or alternatively be undertaken.
  • the spatial frequency spectrum is preferably filtered.
  • the filter here is preferably a filter with finite impulse response (FIR filter) or a bandpass filter.
  • FIR filter finite impulse response
  • a Bessel function is preferably provided in the bandpass filter or FIR filter.
  • a particularly high quality in image data processing or Processing is given when an inverse transformation is performed and the image data processed in this way is processed.
  • the ratio of a used sampling rate or readout frequency of the image data acquisition device to the cutoff frequency of the low pass portion of the filter is between 6 and 14, in particular between 8 and 12, wherein in particular the ratio of the used sampling rate to the cutoff frequency of the high pass portion of the filter is between 3 and 6, in particular between 4 and 5, lies.
  • the ratio of the cut-off frequency of the high-pass component to the cut-off frequency of the low-pass component of the bandpass is between 1.4 and 3, in particular between 1.4 and 2.
  • column sums and / or row sums are formed from the image data or transformed image data and optionally the filtered and transformed image data.
  • the image data are preferably processed or processed such that a conversion into two discrete values is carried out from the measured or transformed gray values or color values. This is called binarization. It is then possible to form column sums and / or row sums of the discrete or binarized values.
  • This method step involves a binarization of the gray values or color values into discrete values, it being possible to set at which gray value or at which color value the boundary for the binarization is provided. For example, 256 gray values are no longer available, only the values 0 and 1 are available.
  • a filter rod manufacturing machine of the tobacco processing industry with a processing device for processing a first wrapping material strip of the tobacco processing industry comprises an embossing device by means of which the first wrapping material strip is embossed or embossed during a longitudinal axial conveyance of the first wrapping material strip
  • the filter rod manufacturing machine comprises a strand forming device in which the first wrapping material strip is wound or wound around a strand material in the longitudinal axial conveying of the strand material
  • an image data acquisition device is provided, by means of which image data from the strand wrapped with the first wrapping material strip can be picked up or taken up
  • an image data processing device is provided the quality and / or the position of a applied on the first wrapping material strip
  • Embossed structure can be determined or determined and wherein a control or regulating device is provided, which adapts control or control parameters of the filter rod manufacturing machine during operation of the production machine due to the determined quality and / or position of the emb
  • a moisture content of the first wrapping material strip in or upstream of the embossing device, a tension of the first wrapping material strip upstream of the embossing device, a distance of two embossing rollers provided in the embossing device and / or a cutting position of filter rods cut to length from the formed strand are provided as the control or regulating parameters.
  • the embossing device is arranged upstream of the strand forming device.
  • a filter trough processing apparatus is disposed upstream of the strand forming apparatus.
  • a feed device for a second wrapping material strip is preferably provided, by means of which the second wrapping material strip of the strand forming device can be fed so that the second wrapping material strip can be wound around the outside of the first wrapping material strip.
  • Fig. 1 schematically shows a filter rod manufacturing machine 1 according to the invention of rod-shaped or strand-shaped articles, namely filter rods or filter strands.
  • filter bars are made of cellulose acetate tat.
  • a filter tow 11 is withdrawn from a filter towbale 10 and processed in a filter tow treatment device 12, for example, sprayed with triacetin and stretched and / or stretched.
  • a processing device 23 follows in the production machine 1, in which a first wrapping material strip 33 can be processed accordingly.
  • the filter tow strip 11 is deflected via corresponding rollers and transported in the conveying direction 13 in the direction of an inlet funnel 15 of a strand forming device 14 or stranding machine.
  • the processing device 23 can be used as an insertion device according to DE 10 2011 085 981.0 be educated.
  • a wrapping material strip 33 which is unrolled from a corresponding supply, for example a reel, not shown, is first guided in the conveying direction 13 'over a wrapping material strip tensioning device 38, which is designed as a dancer by way of example. Subsequently, the first wrapping material strip 33 is guided over rollers and passed through a humidifier 37 to provide a corresponding moisture of the wrapping material strip 33. Subsequently, the moistened wrapping material strip passes 33 in an embossing device 36, in the two embossing rolls 34 and 35 respectively provide for a longitudinal axial, ie formed in the conveying direction embossing mountains and valleys or grooves and elevations or grooves.
  • the embossing device can provide corresponding predefinable embossing structures on the wrapping material strip, which can for example be continuous longitudinally or else in sections, ie with areas which are embossed, longitudinal axial successively arranged embossed areas on the wrapping material strip 33 with areas that are not embossed, alternate. Typically, then the non-embossed areas may be provided where the cut is provided in the subsequently produced filter rod.
  • the first wrapping material strip 33 passes through a drying device and via a guide 40 in the direction of a strand forming device 16 or formatting device 16 in which the first wrapping material strip 33 comes into contact with the filter tow 11 and accordingly the first wrapping material strip 33 is wound around the filter tow 11 becomes.
  • the first wrapping material strip 33 is preferably wrapped around the filter tow 11.
  • a second wrapping material strip 19 is also provided, which is unwound from a reel 18, glued to the gluing device 20 and guided below the first wrapping material strip 33 into the strand forming device 16 becomes.
  • the second wrapping material strip 19 is then completely wrapped around the first wrapping material strip 33 and the filter tow 11 and glued to an adhesive seam.
  • To close the wrapping material strip is also an upper format 17. It then results in a with two wrapping material strips 19 and 33 wrapped filter tow line 21, which is conveyed in the conveying direction 22.
  • the filter strand 21 passes through an optical measuring system 30 or through an image data acquisition device.
  • the optical measuring system or the image data acquisition device will be explained in more detail with reference to the following figures.
  • the filter strand 21 passes to a cutting device 31, are cut in the corresponding filter rods of the filter rod.
  • the filter rods either go into the further processing process or are discharged in the discharge device 32.
  • a different tension may be adjusted to change, for example, the position of the applied embossed structure.
  • a different degree of penetration of the first wrapping material strip 33 can be achieved. The degree of penetration is preferably between 5% to 30%, in particular 7% to 9%, measured just before or in the embossing device 36. The percentages are by mass percent.
  • an embossing structure is embossed into the wrapping material strip, which is stable.
  • a stabilizing agent for example methyl cellulose
  • the stability of the embossed structure can be influenced. Accordingly, the thickness of the embossing grooves can be adjusted by changing the pitch of the embossing rollers 34 and 35. Finally, an influence by temperature change or air change in the drying device 39 can be made.
  • corresponding parameters in the filter fabric preparation device 12 can be changed, for example, the stretching tension or the amount of triacetin applied can be influenced.
  • An influencing of corresponding parameters for controlling or regulating the production machine 1 takes place on the basis of a corresponding measurement and evaluation of image data of the strand or of the rod-shaped article, by means of which the quality and / or position of the embossed structure is determined, the quality and / or position of the Embossed structure of the operation of the manufacturing machine is controlled or regulated.
  • an optical measuring system 30 which can also be referred to as an image data acquisition device, is provided and, for example, in FIG Fig. 2 explained in more detail.
  • the optical measuring system 30 is shown.
  • a strand 21 is guided in the conveying direction 22.
  • the strand 21 covered with the wrapping material strip is visually checked after its production.
  • a measuring system of Hauni Maschinenbau AG is known under the name ORIS.
  • This in Fig. 2 shown schematic optical measuring system 30 is such designed such that the material strand 21 of the tobacco processing industry conveyed longitudinally in the conveying direction 22 is optically scanned or its wrapping material strip is scanned.
  • the strand 21 is passed longitudinally axially through the, preferably stationary, optical measuring system 30, wherein the strand 21 is completely detected and imaged on its surface.
  • the strand is illuminated with light from a light source 52, the light from the light source 52 being deflected using mirrors 53 to which strand 21 is directed and that from the surface or sub-surface of the wrapping material strip, light from the strand 21 is directed via additional mirrors 54 to sensors 55, so that the light reflected from the surface of the strand 21 is picked up by the sensors 55 and converted into corresponding strand image data.
  • the strand image data comprise the entire surface of the material strand 21 and thus represent a linear or two-dimensional image of the entire surface of the strand 21 or its wrapping strips in the event that two wrapping strips are used, as in a preferred embodiment of the invention.
  • the sensors 55 or image sensors in the form of a CCD camera and / or a CCD line scan camera are formed and arranged in a ring, so that the entire circumference of the strand 21 is optically detected, whereby the strand image data in the circumferential direction, the surface of the wrapper strip in a Range of 360 ° represent.
  • the CCD camera 140 may have picture elements such that the circumference is divided into 140 sections or the resolution is divided by 140 by the circumference equivalent.
  • the image data transmitted to the evaluation device or image data processing device 60 for example in the form of digitized gray scale values with, for example, 256 gray scale levels, are analyzed in the image data processing device 60.
  • the ring-shaped sensors 55 transmit the corresponding image data to the image data processing device 60, thereby determining the quality or the position of the embossed structure on the first wrapping material strip, which shimmers through the second wrapping material strip.
  • the quality or position of the embossed structure determined in this way is fed into a control device 61 which controls the operation of the production machine 1 in accordance with, for example, by delivering a signal to the humidifier 62 or 37.
  • the control device may give a control signal to the humidifier 62 or 37 that a higher degree of humidity is desired.
  • a larger amount of stabilizing agents may be added, such as methyl cellulose.
  • the image data processing device 60 may be integrated with the control or regulating device 61 or the evaluation may also be done exclusively in the control device 61.
  • the quality or the position of the embossed structure is determined is described below in an example.
  • the embossing device comprising two embossing rollers based on a schematic section of the embossing device according to Fig. 3 described.
  • the embossing device comprises two embossing rollers 34 and 35, which are arranged at a small distance from each other such that embossed regions 72, 73, 74 and 75 of the embossing roller 34 extend into the embossing roller 35.
  • the embossing areas 72 to 75 have elevations and grooves that are complementary in shape to elevations and grooves of the embossing roller 35.
  • the ridges and grooves in the embossing roll 35 are continuous, ie arranged over the entire circumference of the embossing roll 35 and accordingly the embossing regions 72 to 75 of the embossing roll 34 are provided in sections. This results in embossing areas on the first wrapping material strip 33, which alternate in the conveying direction of the wrapping material strip 33, ie in the longitudinal axial direction, with non-embossed areas.
  • the elevations of the embossing roller 34 have a radius r1, whereas the grooves have a radius of r2. Accordingly, the grooves of the embossing roller 35 have a radius r3 and the elevations have a radius r4.
  • n is the number of sensors or pixels of the line scan camera that are distributed over the circumference.
  • 140 sensors in the CCD camera or line scan camera are provided so that there are 140 sections or columns.
  • this measured signal can be compared with a desired pattern, for example with regard to the distance of the minima and maxima in the circumferential direction or with respect to a standard deviation to the summed gray values.
  • the original image data 80 can be binarized, which is 81 in FIG Fig. 5 is shown.
  • Corresponding column sums could then also be formed, which under certain circumstances already show a better signal than the evaluation signal, which is provided with the reference number 82.
  • the original image data 80 whose image signal does not depend directly on time, but on the coordinates, are converted into a spatial frequency spectrum. It is therefore possible to regard the image data as a one-dimensional signal which can be regarded as a kind of spiral development of the gray values of the image which was scanned at a frequency of 10 MHz, for example. A Fourier transformation or a fast Fourier transformation can then be performed thereon in order to determine a corresponding frequency spectrum. It becomes, so to speak, a spatial frequency spectrum folded at the sampling rate of the CCD camera to obtain a corresponding frequency spectrum.
  • This frequency spectrum is then filtered, for example with a filter with finite impulse response (FIR filter), whose circuit diagram is schematically in Fig. 4 is shown for example.
  • FIR filter finite impulse response
  • This is a kind of bandpass filter, which has a corresponding low-pass component and a high-pass component.
  • a ninth order filter with 71 delay elements and a Bessel filter characteristic is provided.
  • the frequency spectrum which was formed, for example, with a number of grooves of 18 grooves of the embossed structure, at a peripheral resolution of 140 pixels per 18 grooves results in 7.7 pixels per groove peak and groove valley. That is, at a sampling rate of 10 MHz, the grooves have a frequency of 1.3 MHz.
  • the filtered image data stored in Fig. 5 are designated 83, show a much sharper contour. This is due to the bandpass filter according to the circuit Fig. 4 ,
  • the column sums ie the sum of the gray values over the 140 images or sections by the sensors according to reference numeral 85 in FIG Fig. 5 shows in comparison to the column sums with the reference number 82 that clearly the contrast was increased and thus made a more accurate indication of the quality of the embossing can be.
  • the reference numeral 85 indicates a relatively low maximum in the range of approximately the 110th sensor of the line scan camera. This is the interface of the second wrapping material strip, since a greater brightness is absorbed by the fact that an overlap of the second wrapping material strip is provided at this point.
  • the filtered image data may be binarized as shown at 83, as indicated at 84.
  • a suitable gray value is determined, below which the image data are displayed in white and above which the image data are shown in black, or from which the image data are then displayed in black. Also over this column sums can be formed, which would result in an even more contrasty column sum under certain circumstances.
  • Fig. 8a to 8d corresponding image data shown.
  • image data according to Fig. 8a it is original image data 80, in which left and right two embossing areas of the wrapping material strip are provided and in the middle thereof, an area that is not embossed.
  • Fig. 8b shows a gray scale spread representation of the original image data 80, ie, here was an image processing made such that the small differences in the gray values Fig. 8a were spread apart to make the gray scale differences clearer. Accordingly, in Fig.
  • a filtering of the original image data 80 is shown, for example also with a FIR filter or alternatively with another digital filter, which is preferably a bandpass filter.
  • a gray value spread representation of the data Fig. 8c shown. It can be clearly seen that the contrast here compared to the splayed original image data of Fig. 8b has increased and more precisely the embossed structure is recognizable.
  • a column sum over the 140 sections measured by the 140 sensors is shown as filtered spatial frequency data resulting from the original image data by appropriate processing as mentioned above.
  • the mean value which is approximately 2.985 ⁇ 10 4
  • a standard deviation which is indicated by the lighter-colored area
  • the quality is still sufficient.
  • the quality is not sufficient because the embossing pattern in the range of approximately the 78th sensor has a too low gray value in the maximum shown there since the sum of the gray value here is not higher than the mean value plus standard deviation.
  • a rod-shaped article having this groove structure would thus be ejected, for example.
  • Fig. 6b are the dates off Fig. 6a processed further, in such a way that these data were additionally binarized and from the column sums were formed. That is, in principle, the column sums of the processed image data became Fig. 5 used, which are provided with the reference numeral 84. Again, an average and standard deviation are formed, and if this data is used, the filter rod having this corresponding groove structure could still be found to be sufficiently good, for example, since the maxima of the sums are above the mean plus the standard deviation.
  • the column sums formed are the sums of the gray values in the longitudinal axial direction over, for example, the length of a cut filter rod of, for example, 160 mm. Since a picture is taken along the circumference approximately at 0.2 mm each time, 800 gray values per detector or sensor are thus added up. On average, a gray value of 37 out of a total of 256 gray values must be used, so that when totaling 800 values according to Fig. 6a 2,985 x 10 4 as the average.
  • MTF modulation transfer function
  • the groove pattern can also be understood as a kind of stamp, in which case the pattern is to be aligned in the correct phase and then compared with a groove reference.
  • Fig. 7 Schematically is in Fig. 7 a diagram of line totals of original image data is shown. In this case, therefore, the sum of all gray values along the circumference of the measured filter rod or of the measured strand and progressively every 0.2 mm in the conveying direction of the rod or strand is again formed a sum.
  • the result of this summation is in Fig. 7 and shows a corresponding gray value sum, which is designated by the reference numeral 86, in which the gray scale sum is shown on the ordinate and a path on the abscissa.
  • the reference numeral 86 the gray scale sum is shown on the ordinate and a path on the abscissa.
  • There are clearly three different gray value ranges to be determined namely two areas with a low gray value sum and an area with a high gray value sum.
  • the area with the high gray value sum corresponds to a region in which a groove embossing is provided, and the other two regions are regions in which no groove embossing is provided.
  • the transitions are recognizable as edges 87 and 87 'accordingly. On the half of the edge 87 or 87 ', the transition from an embossed structure to no embossed structure is assumed. As a result, for example, a cutting position control can be made.
  • Fig. 9 schematically shows a control or regulation sequence of a manufacturing machine according to the invention.
  • a picture is taken.
  • two branches of procedure that are being made.
  • the position becomes, for example the edges 87 and 87 'from Fig. 7 at which an actuator control signal for influencing a cutting device 31 for cutting filter rods out of the filter strand 21 is influenced.
  • This is shown in 93 at the step Intersect cutting position.
  • the second method branch which is from the image recording 90 to the right in FIG Fig.
  • the determination of the quality includes an ejection at 95 as well as the generation of a control signal at 96 in order, for example, to influence the embossing. This can be done by influencing the wrapping material strip tensioning device 38, by influencing the humidifier 37, by influencing the drying device 39 and / or by influencing, for example, the distance between the first embossing roller and the second embossing roller.
  • Fig. 10 schematically shows a section through a manufactured CP filter rod.
  • 110 shows the filter material.
  • the first wrapping material strip 33 is butt wound in the butting area 111 around the filter material 110.
  • a second wrapping material strip 19 is wound, which overlaps and is glued in a seam area. It can be seen very well the grooves shown schematically. There are 22 grooved mountains and correspondingly 22 grooved valleys or grooves.
  • the filter rod manufacturing machine With the method according to the invention and the filter rod manufacturing machine according to the invention, it can be very efficiently checked whether the embossing of the first wrapping material strip is correct. If the quality decreases as a result of a machine event or due to wear and tear, so that a setpoint value is undershot, this behavior can be detected accordingly and targeted Filter rods are discharged. Alternatively or additionally, the Filterstabherstellmaschine can selectively make a change in one or more parameters, and thus provide appropriate control or regulation of the quality or the quality of the embossing. In the context of the invention, m and n are natural numbers.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Image Processing (AREA)
EP13158885.7A 2012-03-19 2013-03-13 Filterstabherstellmaschine und Verfahren zum Betrieb einer Filterstabherstellmaschine der Tabak verarbeitenden Industrie Active EP2641481B1 (de)

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DE102012204331A DE102012204331A1 (de) 2012-03-19 2012-03-19 Herstellmaschine und Verfahren zum Betrieb einer Herstellmaschine von stabförmigen Artikeln der Tabak verarbeitenden Industrie

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EP2641481B1 true EP2641481B1 (de) 2016-05-11

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DE102013223076A1 (de) * 2013-11-13 2015-05-13 Hauni Maschinenbau Ag Prägewalze
DE102014203620A1 (de) 2014-02-27 2015-08-27 Hauni Maschinenbau Ag Verfahren und Vorrichtung zum Herstellen eines Strangs der Tabak verarbeitenden Industrie
IT201700039700A1 (it) * 2017-04-11 2018-10-11 Gd Spa Dispositivo, metodo ed apparato di controllo di spezzoni di filtro goffrato.
DE102018129256A1 (de) * 2018-06-29 2020-01-02 Hauni Maschinenbau Gmbh Vorrichtung und Verfahren zur optischen Messung an einem Produktstrang der Tabak verarbeitenden Industrie und Verwendung einer optischen Messvorrichtung
PL3587998T3 (pl) * 2018-06-29 2022-01-31 Hauni Maschinenbau Gmbh Urządzenie i sposób pomiaru optycznego na kablu produktu przemysłu tytoniowego i zastosowanie optycznego urządzenia pomiarowego

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US5060664A (en) 1986-11-28 1991-10-29 Korber Ag Method of and apparatus for making streams containing fibrous materials of the tobacco processing industry
JP2000166531A (ja) 1998-12-09 2000-06-20 Japan Tobacco Inc 喫煙用物品の製造に使用されるウエブのエンボス加工装置
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DE10358670A1 (de) 2003-12-12 2005-07-07 Focke & Co.(Gmbh & Co. Kg) Verfahren und Vorrichtung zum Prüfen der Oberfläche eines bewegten Materialstrangs der tabakverarbeitenden Industrie
EP1782703A1 (de) 2005-11-08 2007-05-09 Hauni Maschinenbau Aktiengesellschaft Vorrichtung zur optischen Überwachung eines Materialstranges der tabakverarbeitenden Industrie
EP1800553A1 (de) 2005-12-22 2007-06-27 Hauni Maschinenbau AG Verfahren zum Betrieb einer Filterstrangmaschine und Filterstrangmaschine
EP2080439A1 (en) 2008-01-21 2009-07-22 G.D. S.p.A A unit for scanning tobacco products of elongated shape optically
EP2238845A1 (de) 2009-04-08 2010-10-13 HAUNI Maschinenbau AG Verfahren zur optischen Kontrolle eines Umhüllungspapierstreifens der Tabak verarbeitenden Industrie
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DE102012204331A1 (de) 2013-09-19
CN103315391B (zh) 2017-03-01
CN103315391A (zh) 2013-09-25
EP2641481A1 (de) 2013-09-25
PL2641481T3 (pl) 2016-10-31

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