EP0759816A1 - Device for the sorting of waste bags - Google Patents
Device for the sorting of waste bagsInfo
- Publication number
- EP0759816A1 EP0759816A1 EP95920331A EP95920331A EP0759816A1 EP 0759816 A1 EP0759816 A1 EP 0759816A1 EP 95920331 A EP95920331 A EP 95920331A EP 95920331 A EP95920331 A EP 95920331A EP 0759816 A1 EP0759816 A1 EP 0759816A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- designed
- sorting
- refuse
- bags
- bag
- 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
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
- B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
-
- 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
- B07C5/365—Sorting apparatus characterised by the means used for distribution by means of air using a single separation means
Definitions
- the present invention relates to a device for sorting differently coloured refuse bags which are presented in random order distribution, the refuse bags of different colours containing different types of refuse sorted at the source, comprising at least one conveyor belt designed to convey bags arranged in rows with a space between each, past sorting stations arranged at intervals along said conveyor belt, and designed to identify and separate predetermined types of refuse from the conveyor.
- a device of the type first mentioned hereinabove is known from, eg., SE-A 8901046-6.
- This document relates to a device for sorting refuse in which various types of refuse are separated by being placed in coloured bags or bags with colour markings.
- An identification member is used to 2 identify the bags.
- Mounted after the identification member is a separating member which is used to push the bag away from the conveyor belt.
- this device can be used only for the sorting of two so-called fractions and, therefore, in many cases it is inadequate for the sorting of source-sorted waste.
- the aim of the present invention is to provide a device able to separate a plurality of different fractions of refuse for subsequent treatment in different installations.
- the device comprises at least two or more sorting stations arranged in succession, in that each sorting station comprises a first sensor designed to detect and to emit an output signal when refuse bags of at least one predetermined colour approach the sorting station, in that every sorting station further contains a position-sensitive second sensor which is designed to detect when the refuse bag passes a predetermined position at the sorting station, as well as in that the first and second sensors are designed to actuate a member for removing the bag from the conveyor belt.
- each first sensor in a sorting station i. is designed to be pre-set for detection of a colour or shade within the visible colour spectrum, and also first sensors in different sorting stations are designed to detect different colours or shades within the visible spectrum.
- said bag-removing member consists of a compressed air nozzle which is designed to be activated at a predetermined moment after a signal has been received from both the first and second sensors.
- said first sensor includes a colour sensitive CCD array with an analogue and/or digital video system which has a field of vision through which the respective refuse bags pass, and which has a lens which is out of focus in such a way that a diffuse image is received of the refuse bag.
- Fig. 1 is a diagrammatic plan view showing a device of the invention seen from above with a sorting station
- Fig. 2 is a plan view of the sorting station of Fig. 1 seen from the side.
- FIG. 1 denotes a conveyor belt by means of which refuse bags 8 can be conveyed towards the right of the drawing, as shown by arrows.
- This presupposes that, when the refuse bags 8 are placed on the belt 1, this is effected in such a way that two bags are prevented from coming close together. So that the waste sorting device may work without problems, there must be a distance between bags of at least 0.5 m.
- a succession of identical sorting stations 2, 3, 4 are arranged so that out of the random distribution of refuse bags, bags of one or more predetermined colours are sorted out.
- the refuse bags are made preferably of coloured plastic or paper bags.
- Each sorting station 2, 3, 4 contains at least two optical sensors 5, 6 connected with a steering gear and a separating member 7.
- Every separating member 7 contains preferably one compressed air nozzle, directed transversely to the conveyor belt 1, which communicates with a source of compressed air situated outside the installation.
- compressed air for moving the refuse bags is advantageous, as in this way it can be prevented that sorting might be hindered by refuse remains left on the belt.
- some type or other of mechanical drive with a drive member operating across the conveyor belt, for example electrically driven cylinders.
- the first sensor in each sorting station is sensitive to one or more predetermined colours, and the sensors in the various sorting stations are sensitive to colours which differ from those that are detected by the first sensor.
- the sensor which is used in this connection is preferably a colour-sensitive CCD-array with analogue and/or digital video system, preferably a standard video camera, which is linked with electronic circuits suitable for the purpose. The output signal from the camera is evaluated in said circuits and when the predetermined colour is detected a signal is despatched to the steering gear.
- the video camera is preferably designed to detect a 1 diffuse image. This is achieved by setting the video camera lens out of focus. Detection with the aid of the above-mentioned video camera requires external illumination of the refuse bags. This illumination is preferably provided by sources of light mounted above the device.
- the second sensor in each sorting station 2, 3, 4 is designed to detect the moment when the refuse bag finds itself in a specific position in the sorting station. This sensor ensures that the refuse bag is actually situated in a position suitable for blowing off before the compressed air nozzle is activated, and it is desirable that any danger of an incorrect result, being the consequence of reflections from the refuse bags, be eliminated.
- another signal is despatched to the steering gear.
- the steering gear is designed so as, after both sensors in the station concerned, ie. sensors 5, 6, have emitted their signals which are in agreement for the elimination of incorrect signals, to activate the separation member 7 in such a way that, after a predetermined period, it moves the refuse bag 8 off the conveyor belt 1. If any of the signals from the two sensors deviates from the desired value, the refuse bag continues on along the conveyor belt.
- the refuse sorting device is designed so that the number of types of waste which have to pass through the device is greater by one type than the number of sorting stations. Consequently, the separating member 7 is not used for moving certain coloured bags off the conveyor belt 1 which, instead, continue on with the conveyor to its end, unaffected by the separation member.
- the device of the invention operates in the following manner:
- the refuse bags 8 are placed manually or automatically on the conveyor belt, oriented in such a way that two or more refuse bags will not form a so-called agglomerate, i.e. heap up on the conveyor belt 1.
- the steering gear is connected 1 so that the sensors 5, 6 in a sorting station should indicate both the right colour and position for the bags to be driven off the belt as a result of the separation member 7 becoming activated and compressed air blowing refuse off the conveyor belt.
- the blowing away takes place a certain time after the two sensors have emitted the output signal, and at the same time the resetting of the two sensors takes place so that new refuse bags can be accepted at the sorting station.
- the refuse bags are allowed to pass further along with the conveyor belt.
- the resetting of the two sensors takes place a certain time after the second sensor has indicated that the bag has passed a certain point in the sorting station.
- the device of the invention may be used for sorting waste of many different types; the sole limitation is the number of colours that can reliably be detected in the first sensor and the number of shades in which refuse bags can be manufactured. Both the first and the second sensor are identical for all sorting stations, the only difference being that the electronic circuit connected with every first sensor can be programmed to emit a certain output signal for a certain definite colour or shade within the visible spectrum.
- the most commonly occurring type of waste is placed in the refuse bags which are to travel with the conveyor belt to its end.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Sorting Of Articles (AREA)
- Branching, Merging, And Special Transfer Between Conveyors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9401754A SE508007C2 (en) | 1994-05-20 | 1994-05-20 | Device for sorting waste bags |
SE9401754 | 1994-05-20 | ||
PCT/SE1995/000510 WO1995032062A1 (en) | 1994-05-20 | 1995-05-09 | Device for the sorting of waste bags |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0759816A1 true EP0759816A1 (en) | 1997-03-05 |
EP0759816B1 EP0759816B1 (en) | 2000-01-26 |
Family
ID=20394083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95920331A Expired - Lifetime EP0759816B1 (en) | 1994-05-20 | 1995-05-09 | Device for the sorting of waste bags |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0759816B1 (en) |
DE (1) | DE69514797T2 (en) |
DK (1) | DK0759816T3 (en) |
ES (1) | ES2144127T3 (en) |
SE (1) | SE508007C2 (en) |
WO (1) | WO1995032062A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010112669A1 (en) | 2009-04-03 | 2010-10-07 | Maricap Oy | Method and means in waste handling |
WO2010112668A1 (en) | 2009-04-03 | 2010-10-07 | Maricap Oy | Waste handling system and method |
WO2011029991A2 (en) | 2009-09-14 | 2011-03-17 | Maricap Oy | Method and apparatus for sorting wastes |
WO2016024043A1 (en) | 2014-08-13 | 2016-02-18 | Metrosense Oy | Method, apparatus and system for sorting waste |
WO2019211267A1 (en) | 2018-05-02 | 2019-11-07 | Envac Optibag Ab | Combined sorting of waste containers and material |
EP4134173A1 (en) | 2021-07-12 | 2023-02-15 | The Procter & Gamble Company | Waste sorting and separation process for absorbent articles |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9926555D0 (en) * | 1999-11-09 | 2000-01-12 | Ishida Europ Mfg Ltd | Method and apparatus for orienting flexible walled articles |
WO2001058604A2 (en) * | 2000-02-09 | 2001-08-16 | Urs Schmutz | Conveying and sorting device |
SE517667C2 (en) * | 2001-09-24 | 2002-07-02 | Optibag Systems Ab | Method of sorting waste bags and apparatus for carrying out the method |
SE524476C2 (en) * | 2002-12-04 | 2004-08-17 | Optibag Systems Ab | Method and apparatus for sorting waste bags |
WO2006096101A1 (en) | 2005-03-11 | 2006-09-14 | Optibag Systems Ab | Waste container and arrangement, method and system for sorting of such waste containers |
NO332365B1 (en) * | 2011-04-01 | 2012-09-03 | Envac Optibag Ab | Process and system for identifying waste containers on the basis of samples |
FR2973264B3 (en) | 2011-04-01 | 2013-05-31 | Envac Optibag Ab | METHOD AND SYSTEM FOR IDENTIFYING WASTE CONTAINERS ON THE BASIS OF A PATTERN |
SE538957C2 (en) * | 2014-12-17 | 2017-03-07 | Envac Optibag Ab | Sorting system with multiple sorting devices |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2821302A (en) * | 1954-04-29 | 1958-01-28 | Gerald I Fowler | Bottle sorter |
SE500076C2 (en) * | 1989-03-23 | 1994-04-11 | Sellbergs Engineering Ab | Ways to dispose of waste |
FI903419A (en) * | 1990-07-06 | 1992-01-07 | Halton Oy | FOERFARANDE OCH ANORDNING VID SORTERING AV RETURFOERPACKNINGAR AV RETURFLASKOR, BURKAR M.M. |
SE467394B (en) * | 1991-10-07 | 1992-07-13 | Wahlquists Verkstaeder Ab | DEVICE FOR SORTING OF WASTE WASTE |
-
1994
- 1994-05-20 SE SE9401754A patent/SE508007C2/en unknown
-
1995
- 1995-05-09 DK DK95920331T patent/DK0759816T3/en active
- 1995-05-09 DE DE69514797T patent/DE69514797T2/en not_active Expired - Fee Related
- 1995-05-09 WO PCT/SE1995/000510 patent/WO1995032062A1/en active IP Right Grant
- 1995-05-09 EP EP95920331A patent/EP0759816B1/en not_active Expired - Lifetime
- 1995-05-09 ES ES95920331T patent/ES2144127T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9532062A1 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010112669A1 (en) | 2009-04-03 | 2010-10-07 | Maricap Oy | Method and means in waste handling |
WO2010112668A1 (en) | 2009-04-03 | 2010-10-07 | Maricap Oy | Waste handling system and method |
WO2011029991A2 (en) | 2009-09-14 | 2011-03-17 | Maricap Oy | Method and apparatus for sorting wastes |
WO2016024043A1 (en) | 2014-08-13 | 2016-02-18 | Metrosense Oy | Method, apparatus and system for sorting waste |
KR20170040355A (en) | 2014-08-13 | 2017-04-12 | 메트로센스 오이 | Method, apparatus and system for sorting waste |
US10464105B2 (en) | 2014-08-13 | 2019-11-05 | Metrosense Oy | Method, apparatus and system for sorting waste |
WO2019211267A1 (en) | 2018-05-02 | 2019-11-07 | Envac Optibag Ab | Combined sorting of waste containers and material |
EP4134173A1 (en) | 2021-07-12 | 2023-02-15 | The Procter & Gamble Company | Waste sorting and separation process for absorbent articles |
Also Published As
Publication number | Publication date |
---|---|
DE69514797T2 (en) | 2000-08-31 |
SE9401754L (en) | 1995-11-21 |
SE9401754D0 (en) | 1994-05-20 |
SE508007C2 (en) | 1998-08-10 |
EP0759816B1 (en) | 2000-01-26 |
ES2144127T3 (en) | 2000-06-01 |
DK0759816T3 (en) | 2000-07-03 |
DE69514797D1 (en) | 2000-03-02 |
WO1995032062A1 (en) | 1995-11-30 |
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