EP4526057A1 - Système d'analyse et de tri d'une pièce de matériau - Google Patents

Système d'analyse et de tri d'une pièce de matériau

Info

Publication number
EP4526057A1
EP4526057A1 EP23712911.9A EP23712911A EP4526057A1 EP 4526057 A1 EP4526057 A1 EP 4526057A1 EP 23712911 A EP23712911 A EP 23712911A EP 4526057 A1 EP4526057 A1 EP 4526057A1
Authority
EP
European Patent Office
Prior art keywords
plasma
detection
spectrometer
material part
sorting
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
Application number
EP23712911.9A
Other languages
German (de)
English (en)
Other versions
EP4526057C0 (fr
EP4526057B1 (fr
Inventor
Claudius LASKA
Ronald Gillner
Dennis WINTERSCHEID
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydro Aluminium Recycling Deutschland GmbH
Original Assignee
Hydro Aluminium Recycling Deutschland GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hydro Aluminium Recycling Deutschland GmbH filed Critical Hydro Aluminium Recycling Deutschland GmbH
Publication of EP4526057A1 publication Critical patent/EP4526057A1/fr
Application granted granted Critical
Publication of EP4526057C0 publication Critical patent/EP4526057C0/fr
Publication of EP4526057B1 publication Critical patent/EP4526057B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B07C5/363—Sorting apparatus characterised by the means used for distribution by means of air

Definitions

  • the invention relates to a system for analyzing and sorting a material part, in particular a scrap part made of aluminum, comprising a feed means for transporting the material part, a sorting unit which is set up to feed the material part to one of two fractions, a laser device which is set up to to generate a plasma on a surface of the material part with a laser beam propagating along a beam axis, a spectrometer system which is set up to carry out a spectral analysis of a plasma light emitted by the laser-induced plasma and to generate an output signal in accordance with a result of the spectral analysis carried out, and a control device which is set up to receive the output signal and to operate the sorting unit based on the output signal and a sorting criterion, the spectrometer system having a spectrometer and a detection unit optically connected to the spectrometer, the detection unit having a lens to which a detection cone is assigned, which forms a plasma detection area in an overlap area with the laser beam.
  • a system of the previously described, i.e. H. Generic type is known from EP 3 352 919 B1.
  • the previously known system enables material parts, in particular scrap parts made of aluminum, to be sorted on the basis of laser-induced plasma spectroscopy, also referred to as LIBS (laser-induced breakdown spectroscopy).
  • LIBS laser-induced breakdown spectroscopy
  • Laser-induced plasma spectroscopy is used to determine an element-specific composition of a material part, i.e. H. a sample using a plasma.
  • the plasma is generated on a surface of the material part using high-intensity, focused laser radiation. Light imitated by the plasma is detected and spectrally evaluated in order to draw conclusions about the elemental composition of the material part.
  • material parts to be sorted are fed into a feed means.
  • the feed means can be, for example, oscillating plates that provide a feed surface along which the material parts are moved.
  • the material parts to be analyzed and sorted are fed into a chute according to EP 3 352 919 B1. Following gravity, the material pieces slide down the slide and leave it via a lower edge of the slide. From here, the material parts to be analyzed and sorted continue to move in free fall through the surrounding atmosphere, following the force of weight.
  • the feed means and the chute ensure that the material parts are separated and moved through a spatially defined fall corridor in free fall.
  • a laser device which is designed to generate a plasma on a surface of a material part using a laser beam that propagates along a beam axis.
  • a spectrometer system is provided which is set up to carry out a spectral analysis of a plasma light emitted by the laser-induced plasma and to generate an output signal in accordance with a result of the spectral analysis carried out.
  • This output signal is then used in combination with a sorting criterion in a sorting unit to feed the material parts leaving the chute to one of two fractions.
  • a sorting unit For example, an air nozzle can be used as a sorting unit, which is controlled accordingly by the control device. Certain material parts can be sorted out from the stream of material parts leaving the chute under the influence of air pressure. The result is a fraction of sorted material parts and a fraction of non-sorted material parts.
  • the previously known system serves to recognize parts of material of a certain composition and to separate them from parts of material of a different composition. Such a separation occurs either because a material part of an undesired composition is recognized and removed by means of the sorting unit or because the composition of a material part could not be reliably determined and therefore removal takes place by means of the sorting unit.
  • the fraction of material parts removed is therefore made up of material parts that are clearly identified in terms of their composition and are not desired on the one hand and parts of material that are not clearly identified in terms of their composition, on the other hand.
  • the invention proposes that the detection unit has a further objective, to which a further detection cone is assigned, which forms a further plasma detection area in a further overlap area with the laser beam, the objectives being arranged and/or aligned in this way in relation to one another are that the plasma detection area and the further plasma detection area are arranged offset along the beam axis of the laser beam and together form a viewing area of the detection unit.
  • the embodiment according to the invention advantageously provides an enlarged detection range, with the result that more material parts can be reliably recognized with regard to their composition. As a result, the sorting result is improved because incorrect sorting is minimized. The result is sorting that is more effective.
  • the enlarged detection range results from the fact that, in contrast to the prior art, not just one lens is provided, but rather several lenses, i.e. at least two lenses. However, more than two lenses are preferred, for example three, four or even more lenses.
  • a plasma detection area is created for each lens. With four lenses, there are four plasma detection areas. According to the invention, it is now further provided that the lenses are arranged and/or aligned in relation to one another in such a way that the plasma detection areas are arranged offset along the beam axis of the laser beam and together form the viewing area of the detection unit.
  • the viewing area represents the overall resulting detection area, which is made up of the individual plasma detection areas and is therefore significantly enlarged in contrast to the prior art.
  • the detection area is formed by only one plasma detection area of a lens. Along the beam axis of the Laser beam, such a plasma detection area can typically extend over a distance of 8 to 10 mm.
  • the inventive composition of the viewing area of the detection unit from individual plasma detection areas arranged offset along the beam axis leads to an overall detection area which has an extent of 20 mm, 30 mm, 40 mm or more in the direction of the beam axis. This advantageously ensures that material parts that would otherwise not be detectable can be reliably identified due to their geometric design, including in particular material parts that are spherical or partially spherical.
  • the system according to the invention allows improved sorting, since the proportion of material parts that are sorted out because their composition cannot be reliably identified is minimized.
  • a plasma detection area is set up so that in the case of a plasma present in the plasma detection area, a measurement portion of the plasma light is detected by the associated lens. If there is a laser-induced plasma in a plasma region, at least partially, a measurement portion of the emitted plasma light is recorded by the associated lens. If there are several lenses according to the invention, this means that the detection unit can detect plasma light in the form of measurement components of individual lenses.
  • the detection unit has a lens holder which jointly supports a plurality of lenses. According to this development, a compact design is achieved.
  • the detection unit only has one lens holder. This carries all the lenses, which can be arranged close to one another. This ensures an easy-to-use and compact design.
  • the plasma detection areas merge into one another or are arranged at a distance from one another along the beam axis.
  • the plasma detection areas can each extend over 1/10 to 1/4 of the viewing area along the beam axis. It is therefore possible, especially according to the sorting task to form the overall resulting detection area by appropriately arranging the plasma detection areas.
  • the lens holder provides an optical passage opening through which the beam axis runs.
  • the lens holder therefore has a passage opening through which the laser beam is guided when used as intended, namely along the beam axis. This also further promotes the development of a compact design.
  • the lens holder has a mounting plate which provides a plurality of lens holder openings for each receiving a lens and the optical passage opening for the laser beam, the lens holder openings being arranged distributed around the passage opening.
  • the lens mount has a mounting plate.
  • This mounting plate is used to arrange the individual lenses.
  • Each lens has an opening through which the lens is guided and attached to the mounting plate.
  • the mounting plate also has the passage opening for the laser beam. It is particularly preferred to arrange the lens holder openings distributed around the passage opening for the laser beam. This constructive measure also supports the design of a compact design.
  • a detection cone extends along an observation axis which runs at an observation angle to the beam axis, the observation angle being between 0° and 90°, preferably between 3° and 60°, even more preferably between 5° and is 25°.
  • the purpose of setting up the observation angles is to form an optimized plasma detection area for each lens, particularly with regard to its geometric positioning.
  • different observation angles can be selected for the individual lenses, possibly so that some plasma detection areas are closer to one another than others.
  • it is preferred to change the observation angles individual lenses should be approximately the same size, for example with a maximum deviation from each other of less than 3°.
  • the spectrometer system has a light guide system that optically connects the detection unit to the spectrometer.
  • the spectrometer system therefore has a spectrometer, a detection unit and a light guide system, whereby the light guide system serves to optically couple the detection unit to the spectrometer.
  • the plasma light captured by the detection unit is then transferred to the spectrometer by means of the light guide system, where the spectral analysis can then take place.
  • the light guidance system has a plurality of optical inputs.
  • the light guide system provides a number of optical inputs corresponding to the number of lenses, each optical input of the light guide system being assigned to a lens.
  • the light control system also has an optical output.
  • the optical output is used to output the measurement components recorded with the lenses.
  • the measurement components recorded on the input side of each lens are therefore sent jointly to the spectrometer via the single optical output.
  • the light guide system has a plurality of optical fibers, each of which provides an optical input and which are combined to form a common optical output. Accordingly, optical fibers are provided, each of which is coupled to a lens on the input side. On the output side, the optical fibers are connected to a common optical output, which opens optically into the spectrometer in the manner already described.
  • the laser device, the spectrometer system and the control device are accommodated in a common housing and form a LIBS module.
  • Such a LIBS module can be handled, in particular assembled and maintained, in a simple manner. It is also compact in design and, thanks to the enclosure, is robust and protected from external mechanical influences.
  • the feed means for transporting the material part is set up to transport the material part along a feed surface up to an upper section of a slide.
  • the material part is fed into the feed means. From there it reaches a chute, where it is transported along a feed surface of the feed means, up to an upper section of the chute. Once the material piece reaches the chute, it moves down the chute following gravity.
  • the feed means can, for example, be designed as an oscillating plate, which causes the material parts fed to the feed means to be separated.
  • the purpose of the slide is, in particular, to align the material part and transfer it to a defined fall corridor.
  • the feed means can also be designed as a rotating conveyor belt.
  • the material parts to be analyzed and sorted lie on the conveyor belt and are moved along by it.
  • the sorting unit is assigned to a lower edge of the slide opposite the upper section of the slide, the sorting unit being set up to feed the material part leaving the slide via the lower edge of the slide to one of two fractions.
  • a piece of material leaves the chute in free fall and is subjected to analysis and sorting in free fall.
  • the laser device and the spectrometer system are arranged in the height direction below the lower edge of the slide.
  • the laser device and/or the spectrometer system can also be made to arrange the laser device and/or the spectrometer system above the slide and/or the feed means.
  • the feed means is designed as a conveyor belt
  • detection preferably takes place from above, in which case sorting can then take place either by providing an air bombardment from the side with respect to the conveyor belt or by viewing the material parts takes place from above, but sorting only takes place after the material parts have left the conveyor belt on the delivery side and are in free fall. In this case, sorting can take place from any direction.
  • FIG. 1 shows a schematic representation of the system according to the invention
  • Figs. 5a and 5b show a first embodiment of a detection unit in a top view and in a side view
  • Figs. 6a and 6b in a top view and in a side view a second embodiment of a detection unit
  • FIG. 7 shows an enlarged schematic representation of the spectrometer system according to the system according to the invention according to FIG.
  • FIG. 1 shows a schematic representation of the system 100 according to the invention.
  • the system 100 is set up to produce a material part 120 of a laser-induced To undergo plasma spectroscopy and to sort it depending on the result of the spectral analysis, with two fractions F1 and F2 being provided in the exemplary embodiment shown, to which the material part 120 can be assigned. Collection points 170, for example in the form of containers, are used to collect the respective fractions F1 and F2.
  • the system 100 has a feed means 110 followed by a slide 130.
  • a material part 120 is fed to the feed means 110.
  • the feed means 110 is used to transport the material part 120 along a feed surface 111 provided by the feed means, namely up to an upper section 131 of the chute 130.
  • the material part 120 is transferred from the feed means 110 to the chute 130.
  • the feed means 110 can be designed as an oscillating plate. It serves in particular to separate a plurality of material parts 120 placed on the feed means 110 so that they can then be fed to the chute 130 at a distance from one another.
  • a material part 120 transferred to the slide 130 slides down the slide 130 following gravity, to the lower edge 132 of the slide, which is formed opposite the upper section 131 of the slide 130. It is in particular the task of the slide 130 to align the material part 120 and to transfer it into a defined fall corridor.
  • the material part 120 When leaving the slide 130, the material part 120 still moves under the influence of gravity in free fall through the surrounding atmosphere. This happens through the spectrometer system 1 according to the invention. This ensures an analysis of the material part 120, as will be described in more detail below.
  • the spectrometer system 1 In accordance with a result of a spectral analysis carried out, the spectrometer system 1 generates an output signal. This is fed to a control device 150, which operates, i.e. controls, a sorting unit 160 depending on this output signal on the one hand and a sorting criterion on the other.
  • this sorting unit 160 the material part 120 is either deflected in its free fall or there is no deflection. In the event that there is no distraction, this will happen Material part 120 to collection point 170 of fraction F2. Otherwise, if sorting takes place by means of the sorting unit 160, the material part 120 reaches the collection point 170 for the fraction F1.
  • the laser device 140 in turn consists of further individual components, for example a laser beam source 9, an optical fiber 9A and a focusing optics 11, as can be seen in particular from the exemplary embodiment according to FIG.
  • the spectrometer system 1 has a detection unit 21, which in turn provides several lenses. Each of these lenses is assigned a detection cone 35, which each forms a plasma detection area 39 in an overlap area with the laser beam 5. These plasma detection areas 39 are arranged offset from one another along the beam axis of the laser beam 5 and together form a viewing area 41 of the detection unit 21.
  • the viewing area 41 is therefore composed of the individual plasma detection areas 39, which defines the detection area covered by the detection unit as a whole.
  • Detectable plasma light 3A is, for example, in the wavelength range of UV light, visible light, near infrared light and/or infrared light; In particular, plasma light to be detected can be in the spectral range from approximately 190 nm to approximately 920 nm.
  • the plasma 3 is generated with a laser beam 5 on a surface 7A of a sample 7.
  • the spectrometer system 1 includes one Laser beam source 9.
  • the laser beam source 9 is designed to provide laser beam parameters required for plasma generation.
  • the laser beam 5 is z. B. fed via an optical fiber 9A to a focusing optics 11 and focused from there on the surface 7A of the sample 7 (material part 120 according to Figure 1).
  • the focusing optics 11 can in particular be designed as a laser head component with a focusing function, such as an active laser component with a focusing function that acts in particular on the spectrum or the pulse duration or the pulse energy.
  • the laser beam 5 is propagated between the focusing optics 11 and the sample 7 along a beam axis 5A.
  • Example focus diameters (1/e 2 beam diameter in the beam waist) and focus lengths (double Rayleigh lengths) are in the range from ⁇ 50 pm to >250 pm and in the range from ⁇ 5 mm to >1,000 mm, respectively.
  • Laser parameters can in particular be set/selected such that an area in which plasma generation can take place (also referred to as an ignition area), for example over a length in the range of approximately 5 mm to approximately 50 mm, for example over a length of 10 mm , 20 mm or 30 mm, extends along the beam axis 5A.
  • an area in which plasma generation can take place also referred to as an ignition area
  • Fig. 2 shows schematically a focus zone 11A elongated along the beam axis 5A, as formed in the area of the surface 7A of the sample 7.
  • the plasma 3 forms due to the interaction of the laser radiation with the material on the surface of the sample 7A.
  • the usual dimensions (average diameter) of a plasma 3 are in the range of z. B. 0.1 mm to 5 mm (depending on sample material and laser parameters).
  • the spectrometer system 1 further includes an optical spectrometer 13 for spectral analysis of the plasma light 3A.
  • the optical spectrometer 13 is shown in FIG. 2 as an example as a grating spectrometer.
  • the spectrometer 13 comprises at least one dispersive element 13A, e.g. B. a grid, a prism or a grating prism, and a pixel-based detector 13B, onto which the plasma light strikes in a spectrally expanded manner.
  • Spectral components of the plasma light 3A to be analyzed are assigned to the pixels of the detector 13B.
  • the detector 13B outputs intensity values of the irradiated pixels to an evaluation unit 15, usually a computer with a processor and a memory.
  • the evaluation unit 15 outputs a measured spectral distribution 17 and compares it, for example, with stored comparison spectra in order to determine the plasma light 3A and thus to assign the elements contributing to the plasma light 3A to the examined sample 3 and to output them as the result of the spectral examination.
  • a (spectral-dependent) beam input for the plasma light to be analyzed is defined by an entrance aperture 19, usually an entrance slit 19A.
  • the spectrometer system 1 further comprises a detection unit 21 with a lens holder 23 and a plurality of lenses 25A, 25B, 250, which are held by the lens holder 23.
  • a detection unit 21 with a lens holder 23 and a plurality of lenses 25A, 25B, 250, which are held by the lens holder 23.
  • three lenses are shown in the figures, two in the image plane and one behind it.
  • the number of lenses used can be selected depending on spatial and optical parameters as well as parameters of the material of the sample to be examined; it lies e.g. B. in the range from 2 to 20, for example with 4, 5, 8, 9 or 15 lenses.
  • the spectrometer system 1, in particular the detection unit 21, further comprises an optical light guide system 27, which optically connects the lenses 25A, 25B, 250 with the spectrometer 13.
  • the light guide system 27 provides a plurality of optical inputs 29, each of which is optically assigned to one of the lenses 25A, 25B, 250, and an optical output 31 (functional, common to the lenses), which is optically assigned to the entrance aperture 19.
  • Each of the lenses 25A, 25B, 250 is set up to capture a measurement portion 33 of the plasma light 3A and includes at least one focusing optical element, such as. B. a converging lens or a concave mirror.
  • a detection cone 35 is assigned to each of the lenses 25A, 25B, 250.
  • the beam axis 5A runs through the detection cones 35, the detection cones 35 having a set minimum size in the area of the laser beam 5.
  • Each of the detection cones 35 includes a plasma detection area 39 in an overlap area with the laser beam 5, which is assigned to the corresponding objective 25A, 25B, 250.
  • the detection cones 35 have a length from an entrance aperture of an objective to the laser beam in the range of 200 mm to 400 mm.
  • Measurement components 33 captured by one or more lenses are transmitted by the optical Light guide system 27 guided to the common optical output 31 and through the
  • Entrance aperture 19 is coupled into the optical spectrometer 13 for spectral analysis.
  • Fig. 2 shows an example of three lenses 25A, 25B, 25C, which are arranged azimuthally distributed around the beam axis 5A.
  • the lenses 25A and 25B lie on opposite sides of the beam axis 5A and are thus directed onto the beam axis 5A from opposite sides.
  • the lens 25C is directed from behind onto the beam axis 5A.
  • Another objective (not shown in FIG. 2) can, for example, be directed from the front onto the beam axis 5A or be directed onto the focus zone 11A along the beam axis 5A using a beam splitter.
  • the detection cones 35 are indicated by dashed lines conically tapering towards the beam axis 5A in FIG.
  • Fig. 3 shows a mounting plate 23A of the detection unit 21 of the LIBS system to illustrate the arrangement and alignment of the lenses 25A, 25B, 25C.
  • the mounting plate 23A has lens mounting openings for receiving the lenses 25A, 25B, 25C.
  • the lens holder openings are each arranged at a radial distance from the beam axis 5A and are designed for an oblique alignment of the lenses 25A, 25B, 25C to the beam axis 5A.
  • observation axes 35A of the lenses 25A, 25B, 25C are shown. In the example shown, the observation axes 35A run at an observation angle a to the beam axis 5A.
  • the lenses 25A, 25B, 25C are mounted in the mount plate 23A (generally located and aligned in the mount 23) such that the plasma detection areas 39 are offset along the beam axis 5A.
  • the offset in the direction of the beam axis 5A can be achieved by varying the radial distance of the lenses 25A, 25B, 25C from the beam axis 5A (optionally with varying insertion).
  • different radial distances R1 and R2 for the lenses 25A and 25B are indicated in FIG.
  • the observation angle of at least some of the lenses can be adjusted to the desired offset of the plasma detection areas 39 in the direction of the beam axis 5A can be adjusted (see e.g. Fig. 6B).
  • Mixed configurations are also possible.
  • the observation angle a can be in the range from 0° (via beam splitters along the laser beam) to 90° (observation orthogonal to the laser beam).
  • the observation angles a shown as examples within the scope of the disclosure are in the range from 5° to 15°, for example in the range from 5° to 10°.
  • the observation axes 35A of adjacent lenses 25A, 25B, 25C approach the beam axis 5A from different azimuthal directions (azimuthal angle in the plane perpendicular to the beam axis 5A). In the case shown in Fig. 3, the observation angles a are comparable for all lenses and do not differ more than z. B.
  • the plasma detection areas 39 together form a viewing area 41 of the detection unit 21.
  • the viewing area 41 extends along the beam axis 5A in the area of the focus zone 11A.
  • Each of the plasma detection areas 39 is assigned a measurement depth along the beam axis 5A.
  • the measuring depth corresponds to z in Fig. 3.
  • B. a diameter of the circles that illustrate the plasma detection areas 39.
  • the measurement depth is a specific characteristic that is given by optical parameters such as focus length and aperture of the lens as well as by the arrangement and orientation of the lens (e.g. geometric position parameters of the lens with respect to the beam axis 5A - distance and angle).
  • the plasma detection areas 39 can each extend along the beam axis 5A over a measuring depth of approximately 5 mm to approximately 15 mm, in particular over a measuring depth of approx. 5 mm to approx. 12 mm.
  • an optional protective window 43A which can be provided in the area of an optical through opening 43 in the mounting plate 23A in order to direct the laser beam through the mounting 23 and past the lenses 25A, 25B, 25C onto the sample 7 can.
  • FIG. 4 shows a perspective view of an exemplary LIBS measuring head 51, which is connected to a laser beam source via an optical fiber 9A.
  • the holder 23 of the LIBS measuring head 51 comprises a longitudinal support plate 23B, on the input side of which an attachment for the optical fiber 9A and the focusing optics 11 (laser head with beam shaping) is provided.
  • the optical spectrometer 13 is also attached to the longitudinal support plate 23B and the mounting plate 23A for the four lenses 25A, 25B, 25C, 25D (generally n>1-fold entrance optics) is provided.
  • the lenses 25A, 25B, 25C, 25D are set up to detect measurement components of plasma light from plasma detection areas 39, which are arranged offset from one another along the beam axis 5A, and via the light guide system 27 (for example a fiber bundle with n>1 inputs and a functional output - “n-on-1 fiber bundle”) to the spectrometer 13 for spectral analysis.
  • the light guide system 27 for example a fiber bundle with n>1 inputs and a functional output - “n-on-1 fiber bundle”
  • two optical fibers 45 of the light-guiding system 27 are shown in FIG. 4, which optically connect the lenses 25B and 25C to the common spectrometer 13.
  • the measurement components in the spectrometer 13 (or optionally before coupling into the spectrometer 13) can be combined for a measurement process.
  • An n-to-1 fiber bundle allows multiple lenses to be fed into one spectrometer, where multiple n-to-1 bundles can be used to feed multiple spectrometers.
  • Fig. 5A shows a top view of the mounting plate 23A.
  • the optical passage opening 43 in the center allows the laser beam to pass through (laser beam axis 5A).
  • Four lens mounting openings 53A, 53B, 53C, 53D are arranged azimuthally around the through opening 43 with varying radial distances from the beam axis 5A. They are equally distributed azimuthally, so that two lens holder openings are opposite each other in pairs.
  • four identical lenses 25A, 25B, 250, 25D are inserted into the lens mounting holes 53A, 53B, 530, 53D.
  • the lenses 25A, 25B, 250, 25D were inserted at different distances into the lens holder openings 53A, 53B, 530, 53D, so that depending on the radial distance, the associated plasma detection areas 39 are arranged next to each other in the direction of the beam axis and thus the viewing area 41 of the detection unit which causes the depth of field 21 train.
  • FIG. 6A An alternative embodiment is illustrated in Figures 6A and 6B.
  • four lens mounting openings 55A, 55B, 550, 55D can be seen, which are arranged symmetrically at the same radial distance from the through opening 43 and, for example, evenly distributed around it.
  • the offset of the plasma detection areas 39 in the direction of the beam axis 5A is caused by different observation angles of the lenses 25A, 25B, 250, 25D used.
  • the observation angles can be in the range of 3° to 15° at a radial distance of 30 mm, so that the viewing area 41 is formed at a distance of approximately 100 mm from the mounting plate 23A.
  • FIG. 7 shows again a detailed view of the system 100 according to the invention according to FIG. 1.
  • different material parts are provided in their composition, namely material parts 120B made of plastic and material parts 120A made of aluminum.
  • sorting can take place by means of the spectrometer system 1 according to the invention in such a way that the material parts 120A are separated from the material parts 120B.
  • the sorting unit 160 removes it.
  • the sorting unit 160 has an air pressure nozzle, by means of which a plastic part 120B can be removed from the stream of material parts.
  • material parts 120B made of plastic collect at the collection points 170
  • Material parts 120A made of aluminum on the other hand.

Landscapes

  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
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Abstract

L'invention concerne un système d'analyse et de tri d'une pièce de matériau, en particulier d'une pièce de ferraille constituée d'aluminium, comprenant : - un moyen d'alimentation (110) pour transporter la pièce de matériau (120), - une unité de tri (160) qui est conçue pour alimenter la pièce de matériau (120) vers l'une de deux fractions (F1, F2), - un dispositif laser (140) qui est conçu pour générer un plasma (3) sur une surface (7A) de la pièce de matériau (120) à l'aide d'un faisceau laser (5) qui se propage le long d'un axe de faisceau (5A), - un système spectromètre (1) qui est conçu pour exécuter une analyse spectrale d'une lumière plasma (3A) émise depuis le plasma induit par le laser (3) et pour générer un signal de sortie en fonction du résultat de l'analyse spectrale qui est exécutée, et - un dispositif de commande (150) qui est conçu pour recevoir le signal de sortie et faire fonctionner l'unité de tri (160) sur la base du signal de sortie et d'un critère de tri, le système spectromètre (1) présentant un spectromètre (13) et une unité de détection (21) qui est optiquement connectée au spectromètre (13), et - l'unité de détection (21) présentant un objectif (25A, 25B, 25C, 25D) qui est apparié à un cône de détection (35) qui forme une région de détection de plasma (39) dans une région (37) chevauchant le faisceau laser (5). L'invention est caractérisée en ce que l'unité de détection (21) présente un objectif (25A, 25B, 25C, 25D) additionnel qui est apparié à un cône de détection (35) additionnel qui forme une région additionnelle de détection de plasma (39) dans une région (37) additionnelle chevauchant le faisceau laser (5). Les objectifs (25A, 25B, 25C, 25D) sont disposés et/ou alignés en relation l'un par rapport aux autres de sorte que la région de détection de plasma (39) et que la région additionnelle de détection de plasma (39) sont disposées d'une manière décalée le long de l'axe de faisceau (5A) du faisceau laser (5) et forment conjointement une région de visualisation (41) de l'unité de détection (21).
EP23712911.9A 2022-05-20 2023-03-22 Système d'analyse et de tri d'un element de matériau Active EP4526057B1 (fr)

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EP22174653.0A EP4279188B1 (fr) 2022-05-20 2022-05-20 Système d'analyse et de tri d'un element de matériau
PCT/EP2023/057379 WO2023222284A1 (fr) 2022-05-20 2023-03-22 Système d'analyse et de tri d'une pièce de matériau

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EP (2) EP4279188B1 (fr)
JP (1) JP2025519084A (fr)
CA (1) CA3255228A1 (fr)
ES (2) ES3037519T3 (fr)
HU (1) HUE073510T2 (fr)
MX (1) MX2024014172A (fr)
PL (1) PL4279188T3 (fr)
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JP2002122543A (ja) * 2000-01-20 2002-04-26 Tokyo Electric Power Co Inc:The 元素分析装置および元素分析方法
US7763820B1 (en) * 2003-01-27 2010-07-27 Spectramet, Llc Sorting pieces of material based on photonic emissions resulting from multiple sources of stimuli
JP2004354344A (ja) * 2003-05-30 2004-12-16 Olympus Corp 光源装置及びその光源装置が適用される生体分子解析装置
JP2006023092A (ja) * 2004-07-06 2006-01-26 Toshiba Corp 分析方法およびその装置
JP2010257585A (ja) * 2009-04-21 2010-11-11 Nikon Corp 照明装置及びこの照明装置を備えた光学装置
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WO2018012346A1 (fr) * 2016-07-15 2018-01-18 国立研究開発法人産業技術総合研究所 Dispositif de tri d'objets de type libs
JP6832650B2 (ja) * 2016-08-18 2021-02-24 株式会社Ｓｃｒｅｅｎホールディングス 検査装置および検査方法
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KR102293843B1 (ko) * 2019-10-02 2021-08-25 광주과학기술원 레이저 유도플라즈마 분광법을 이용한 폐금속 자동선별 시스템 및 방법

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EP4279188A1 (fr) 2023-11-22
EP4526057C0 (fr) 2026-01-28
US20250367708A1 (en) 2025-12-04
WO2023222284A1 (fr) 2023-11-23
US12594582B2 (en) 2026-04-07
MX2024014172A (es) 2025-02-10
EP4526057B1 (fr) 2026-01-28
ES3061626T3 (en) 2026-04-06
ES3037519T3 (en) 2025-10-02
PL4279188T3 (pl) 2025-11-12
HUE073510T2 (hu) 2026-01-28
EP4279188B1 (fr) 2025-06-25
EP4279188C0 (fr) 2025-06-25
JP2025519084A (ja) 2025-06-24
CA3255228A1 (fr) 2025-03-27

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