EP0734790A1 - Vorrichtung zum Sortieren von Plastikgegenständen - Google Patents

Vorrichtung zum Sortieren von Plastikgegenständen Download PDF

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Publication number
EP0734790A1
EP0734790A1 EP96400652A EP96400652A EP0734790A1 EP 0734790 A1 EP0734790 A1 EP 0734790A1 EP 96400652 A EP96400652 A EP 96400652A EP 96400652 A EP96400652 A EP 96400652A EP 0734790 A1 EP0734790 A1 EP 0734790A1
Authority
EP
European Patent Office
Prior art keywords
sorting
track
objects
tank
bottles
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
EP96400652A
Other languages
English (en)
French (fr)
Other versions
EP0734790B1 (de
Inventor
Agnès Lachambre
Christian Hamon
Sylvain Henrio
Pascal Perrot
Pierre Bossard
Jean Morlec
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.)
Sydel Ste
Institut Regional des Materiaux Avances IRMA
IFP Energies Nouvelles IFPEN
Original Assignee
Sydel Ste
Institut Regional des Materiaux Avances IRMA
IFP Energies Nouvelles IFPEN
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 Sydel Ste, Institut Regional des Materiaux Avances IRMA, IFP Energies Nouvelles IFPEN filed Critical Sydel Ste
Publication of EP0734790A1 publication Critical patent/EP0734790A1/de
Application granted granted Critical
Publication of EP0734790B1 publication Critical patent/EP0734790B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • 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

Definitions

  • the invention relates to a machine for sorting objects, for example glass, plastic or any other similar material.
  • this type of machine comprises at least one sensor capable of recognizing said objects to be sorted, said sensor delivering, during the phase of identification of said object, signals for the start and end of the object, when this object passes in front of the sensor.
  • the present invention therefore relates to an object sorting machine and more specifically relates to means of correctly scrolling the objects to be sorted in a restricted area in front of said sensor.
  • the purpose of the system is to sort objects and for example here the sorting of plastic bottles appearing in the normal appearance of bottles but also in the appearance of clumps, or shredded bottles of imprecise conformation, color and heterogeneous nature.
  • the sorting criterion depends on the sensor used chosen according to the properties of the objects to be identified (nature, color, conformation, chemical composition, physical properties ).
  • Patent WO 92 / 07.232 describes a rectilinear mat for separating objects.
  • US Patent 3,900,107 describes a simple tank containing at its bottom a substantially horizontal disc requiring to use various means to raise the objects to be sorted from the disc to a separation mat for objects.
  • Patent WO 92 / 03.551 also describes a tank at the bottom in the shape of a relatively inclined disc.
  • an object separation device is made up of 5 functional sub-assemblies (the reference numbers refer to FIG. 1 without limitation of the invention.) Which are described here for a better understanding. of the invention, the invention in itself being only the means (centrifugal bowl) which makes it possible to receive the spillage of the objects and to send them one by one in front of the sensor.
  • This device includes:
  • the filling of the hopper is carried out by a handling means (example a bucket loader).
  • a handling means for example a bucket loader.
  • an extraction conveyor regulates the flow of the material to be sorted.
  • the screen is intended to evacuate the fragments as well as objects of reduced size not acceptable by the sorter.
  • At least one elevator (for example belt) (4)
  • At least one centrifugal bowl aligner separator (see Figure 2)
  • the cone, trunk of cone or trunk of sphere fits into the tank; its diameter is substantially equal to that of the tank to the operating clearance.
  • the disc or cone or truncated cone or trunk of a sphere drives the objects to its periphery. Arrived at the "high" point of the disc or cone or truncated cone or trunk of a sphere, its generator is at the level of the horizontal peripheral track.
  • the objects are pressed against the shore by the action of centrifugal force and reach a first track (3).
  • the width of the track is such that only one object can be there. Each object is thus isolated on its track.
  • the interruption practiced in the shore (5) allows the passage of the isolated object on a second track (8) called sorting track (or firing track) defined below:
  • the sorting track is driven independently. Its speed of rotation, greater than or equal to that of the tank, makes it possible to increase the interval between objects.
  • the device according to the invention can be supplemented, for example, as follows:
  • the trajectory described by the sorting track is preferably divided into angular sectors.
  • a sector generally, the first sector, located immediately after the break in the shore, is reserved for the identification of the object.
  • the mesh structure of the mat allows positioning of the sensor (7) on either side of the object to be identified. Most of the other sectors are used to collect identified and separate objects. The number of the following sectors depends on the selectivity that one wishes to bring to the objects.
  • Each sector corresponds to a type of object to be sorted.
  • a sector for example the last, is a scrap zone for badly identified or unidentified objects or can be used for any other particular recovery of objects not selected in the other sectors.
  • the position of the sensor (7) on Figure 2 is not limiting.
  • An ejection system (10) (for example by forced air) is located under the sorting belt at each sector. Once ejected, the objects are guided to a specific silo.
  • the purity level of the batches constituted is generally greater than 98%.
  • the rates of sorted bottles can reach 18,000 bottles per hour.
  • the lots sorted by material are sent to different specialized recycling centers.
  • the sorting machine incorporates the sensor which allows the different materials to be recognized.
  • the sensor used is, for example, a near infrared (NIR) spectrometer with factorial filters from BUHLER.
  • NIR near infrared
  • Bottles or other objects to be identified are illuminated with a light source (for example with halogen lamps) and measured without physical contact with the sensor.
  • a light source for example with halogen lamps
  • the bottles or other objects are ejected by pushing compressed air.
  • the blow guns used deliver a precise and measurable directional jet.
  • the entire installation is generally controlled by an automaton which mainly regulates the flow of bottles, dialogs with the sensor and controls the ejectors.
  • the sorter assigns the identified object to the specific silo.
  • the sorting track is equipped with an angular position sensor. The relative angular position of each receiving silo with respect to the reference position of the identification sensor is previously measured and then parameterized at the level of the PLC.
  • the sensor delivers the object start and end signals to the PLC. These signals are synchronized by the automaton with the information delivered by the angular position sensor in order to measure the length of the object.
  • the precision of this synchronization also makes it possible to delimit areas of the object to be ignored or to be treated in particular (bottle stopper, label, ink, bar code, paint, etc.). Knowledge of this length makes it possible to determine the optimum point of impact for the shot.
  • the device according to the invention applies to the separation of objects of sizes, shapes, colors, and variable masses.
  • the objects to be sorted are for example glass or plastic bottles.
  • the device is particularly suitable for sorting broken, shredded or crushed plastic bottles (provided that they are not welded or glued, entangled together by crushing procedures).
  • the device is also suitable for sorting plastic packaging of all kinds, for example laundry packaging, cleaning products, food products (oil containers), automotive products, gardening products, fertilizers or all similar types of packaging. . We can sort mixtures of all the objects mentioned above.

Landscapes

  • Sorting Of Articles (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Centrifugal Separators (AREA)
  • Sampling And Sample Adjustment (AREA)
EP19960400652 1995-03-30 1996-03-27 Vorrichtung zum Sortieren von Plastikgegenständen Expired - Lifetime EP0734790B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9503924 1995-03-30
FR9503924A FR2732247B1 (fr) 1995-03-30 1995-03-30 Machine de tri d'objets en plastique

Publications (2)

Publication Number Publication Date
EP0734790A1 true EP0734790A1 (de) 1996-10-02
EP0734790B1 EP0734790B1 (de) 2000-12-20

Family

ID=9477702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960400652 Expired - Lifetime EP0734790B1 (de) 1995-03-30 1996-03-27 Vorrichtung zum Sortieren von Plastikgegenständen

Country Status (5)

Country Link
EP (1) EP0734790B1 (de)
JP (1) JPH0994535A (de)
DE (1) DE69611259T2 (de)
ES (1) ES2154390T3 (de)
FR (1) FR2732247B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1402961A2 (de) * 2002-09-26 2004-03-31 Wincor Nixdorf International GmbH Vorrichtung zum Sortieren von Abfall

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003551A1 (en) * 1988-09-22 1990-04-05 Cochlea Corporation Inspection system and method
WO1992007332A1 (en) * 1990-10-15 1992-04-30 Automation Industrial Control, Inc. A computer-controlled system and method for sorting plastic items

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003551A1 (en) * 1988-09-22 1990-04-05 Cochlea Corporation Inspection system and method
WO1992007332A1 (en) * 1990-10-15 1992-04-30 Automation Industrial Control, Inc. A computer-controlled system and method for sorting plastic items

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1402961A2 (de) * 2002-09-26 2004-03-31 Wincor Nixdorf International GmbH Vorrichtung zum Sortieren von Abfall
EP1402961A3 (de) * 2002-09-26 2005-07-06 Wincor Nixdorf International GmbH Vorrichtung zum Sortieren von Abfall

Also Published As

Publication number Publication date
EP0734790B1 (de) 2000-12-20
DE69611259T2 (de) 2001-04-26
ES2154390T3 (es) 2001-04-01
FR2732247A1 (fr) 1996-10-04
JPH0994535A (ja) 1997-04-08
DE69611259D1 (de) 2001-01-25
FR2732247B1 (fr) 1997-05-23

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