EP0285602B1 - Procédé et dispositif pour détecter et enlever les corps étrangers du coton brut - Google Patents
Procédé et dispositif pour détecter et enlever les corps étrangers du coton brut Download PDFInfo
- Publication number
- EP0285602B1 EP0285602B1 EP19880890070 EP88890070A EP0285602B1 EP 0285602 B1 EP0285602 B1 EP 0285602B1 EP 19880890070 EP19880890070 EP 19880890070 EP 88890070 A EP88890070 A EP 88890070A EP 0285602 B1 EP0285602 B1 EP 0285602B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foreign
- fibrous material
- density
- breaking
- raw cotton
- 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.)
- Expired - Lifetime
Links
- 229920000742 Cotton Polymers 0.000 title claims description 45
- 238000000034 method Methods 0.000 title claims description 17
- 239000000835 fiber Substances 0.000 claims description 38
- 239000002657 fibrous material Substances 0.000 claims description 17
- 238000011156 evaluation Methods 0.000 claims description 10
- 244000144992 flock Species 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000009960 carding Methods 0.000 claims description 2
- 238000001739 density measurement Methods 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims 3
- 238000010894 electron beam technology Methods 0.000 claims 2
- 239000000109 continuous material Substances 0.000 claims 1
- 230000006866 deterioration Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 5
- 230000001914 calming effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000011109 contamination Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 230000029087 digestion Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007383 open-end spinning Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G23/00—Feeding fibres to machines; Conveying fibres between machines
- D01G23/02—Hoppers; Delivery shoots
- D01G23/04—Hoppers; Delivery shoots with means for controlling the feed
- D01G23/045—Hoppers; Delivery shoots with means for controlling the feed by successive weighing; Weighing hoppers
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01B—MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING
- D01B3/00—Mechanical removal of impurities from animal fibres
- D01B3/02—De-burring machines or apparatus
- D01B3/025—Removing pieces of metal
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
- D01G31/003—Detection and removal of impurities
Definitions
- the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 9.
- the aim of the invention is to remove foreign fibers from the raw cotton.
- Foreign fibers can get into the raw cotton through improper removal of the packaging or when picking and collecting the cotton as well as when emptying the bags in the collection point or ginning plant, e.g. the cords with which the sack was tied were cut open, fell onto the floor and with the spilled cotton into the ginn.
- a method of the kind referred to is characterized in that which is to foreign substances to be examined fiber material before irradiation to a flock weight of 10- 1 to 10- 3 g / flake, preferably g to about 2x1 0- 2 / flake, fanned and that X-rays with an acceleration voltage of 5-30 kV, preferably 8-20 kV, in particular 10 kV, are used for radiation.
- An inventive device of the type mentioned is characterized in that the X-ray system at a location in Aufscht manungsprozeß is preferably in a calming section, installed at the Aufschmonyungsgrad the flakes a flock weight of 10- 1 to 1 0-3g, preferably 2x10 2 g, shows that the X-ray system can be operated with an acceleration voltage of 5-30 kV, preferably 8-20 kV, in particular 10 kV, and that from the foreign body detector, a foreign body detector that removes the foreign matter from the fiber material, preferably at the end of the calming section arranged removal device is controlled.
- the X-ray device and the associated image recognition device are arranged in order after the processing device for fibers, in particular raw cotton, for example in the course of a cleaner, at a point at which the preferably continuously moved, partially disintegrated fiber, in particular raw cotton, starting from an initial flake weight in one Standard bale is loosened to the flake weight given above
- the removal device for the foreign fibers can be controlled by the image recognition device.
- Standard X-ray fluoroscopy devices with high acceleration voltages cannot be used because, as has been established, the foreign fibers to be removed can only be used when a signal is used X-ray tube with an acceleration voltage of approx. 10 kV. An X-ray tube was therefore used, which works with acceleration voltages of 8 - 12 kV.
- the image of the foreign fibers in the cotton produced in this way provided sufficient contrast to generate a signal with conventionally available image conversion or image scanning systems, which can trigger an elimination mechanism if a certain size of an imaged foreign substance is exceeded.
- This signal obtained in this way is used (with a time delay and synchronously with the feed speed of the raw cotton) to remove that part of the raw cotton in which the foreign fiber is located, e.g.
- the disintegration or cleaning process of raw cotton is shown purely schematically in a partial section of a total digestion section.
- the raw cotton of delivered bales is processed or removed and loosened in the course of the removal.
- the usual bales of raw cotton have a weight of about 480 pounds and a volume of a little less than 1 m 3 .
- This partially loosened cotton may already have preferably 2x10 2 g / flake a flock weight of about 10- 1 to 10- 3 g / flake.
- the raw cotton is fed via a roller 24 and a fan roller 4, in which further loosening or disintegration takes place, to a calming section 18, in which, for example, seeds, stones or the like. Impurities are excreted.
- 7 schematically denotes a cleaning device in the calming section 18.
- the loosened cotton fed to this calming section 18 via a loading shaft 5 and a light barrier 6 is fed at the end of the section via a feed table 8, pressure rollers 9 and feed rollers 10 to a sawtooth roller 11 or separating knives 12 or carding segments 13 which further clean and break up the cotton .
- the cotton is discharged via the shaft 25, while contaminants are discharged via the shaft 26.
- a density measuring device which is advantageously an X-ray tube fed by a voltage source 21 or an X-ray transmission device, the optionally fanned beams of which are from a sensor system or an image recording device 14, e.g. Semiconductor image recorders are supplied, which is assigned a processor system or an image evaluation device which, depending on a specific predetermined resolution, emits a trigger signal if the measured density values allow conclusions to be drawn about foreign fibers that exceed a specific dimension.
- a trigger signal is sent via a line 23 to a distance device 17, e.g. a compressed air nozzle, which is thus controlled by the image recording device 14.
- the removal device 17 is actuated synchronously as a function of time, taking into account the flow velocity of the cotton. If it is a compressed air nozzle, the cotton and the foreign fibers are blown out through a flap 22 into a collecting container 16. From the collection container 16, the raw cotton and the foreign fibers that have been separated out can be further sorted. Instead of a compressed air nozzle for separating contaminated cotton components, an automatically controlled gripper could also be provided.
- the detection device according to the invention must be arranged in a region of the raw cotton being conveyed, in which the cotton has been loosened to a theoretical flake weight of 10- 1 to 10- 3 g / flake, preferably 2x1 0- 2 g / flake. It should be noted that the finally loosened, cleaned and digested cotton has a theoretical flake weight, which carries about 5x1 0-7 g / flake.
- the device according to the invention could, for example, already be arranged immediately after the bale cutter, since such devices can already flocculate the cotton in such a way that that this flake weight range specified according to the invention is reached. If, for example, instead of a bale cutter 19, another raw cotton feed device is provided in order to feed the raw cotton to the cleaning train, the device according to the invention is arranged at a different location at which the desired flake weight reduction is present, for example only after one or more cleaning stages.
- the selection of the voltage of the X-ray tube was also important, since a voltage that is too low or too high does not result in a usable signal and only through the mutual coordination of the X-ray voltage and the degree of volume flocculation can be obtained recognizable and evaluable evaluation signals indicating foreign fibers.
- Plastic fibers and plastic cords can be optimally separated with the device according to the invention or with the method according to the invention. It is essential for the method that the path irradiated by the X-ray beam, i.e. the space through which the cotton flakes flow has a dimension (a) which is approximately 3-15 cm in size, preferably approximately 9 cm. Rectangular channels or round channels with the above dimensions could be used as the radiation depth or radiation diameter. It is important that the loosened fiber flakes are tight at the measuring location or without gaps in order to ensure an essentially constant output level for the density measurement. With the flake weight provided according to the invention, this is achieved with the specified dimensions of the measuring path depth.
- theoretical calculations for the optimal layer thickness of the material to be irradiated resulted in a layer thickness or penetration depth of approx. 10 cm.
- the signal-to-noise ratio should be as high as possible (approx. 2: 1). It follows from this that the layer to be penetrated by the rays may not contain more mass of raw fiber material than the mass of the foreign body to be searched for. This means that the smaller the dimension of the foreign fiber to be determined, the thinner the layer of the loosened material must be.
- the layer thickness may be approximately 8 cm under the mentioned boundary conditions of the signal strength.
- the width of a search device should not exceed a value of approx. 1 m, e.g. conventional cleaner trains that have this width can be used for installation.
- sensor elements are used in a one-line or multi-line arrangement, the preferably square or circular dimension of which is in the order of the minimum dimension of the weakest foreign fiber to be detected, the signals corresponding to the density fluctuations being fed to an electronic evaluation system.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Claims (14)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT719/87 | 1987-03-25 | ||
| AT71987A AT394453B (de) | 1987-03-25 | 1987-03-25 | Verfahren und vorrichtung zum erkennen und entfernen von fremdstoffen aus rohbaumwolle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0285602A1 EP0285602A1 (fr) | 1988-10-05 |
| EP0285602B1 true EP0285602B1 (fr) | 1992-07-01 |
Family
ID=3498007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19880890070 Expired - Lifetime EP0285602B1 (fr) | 1987-03-25 | 1988-03-23 | Procédé et dispositif pour détecter et enlever les corps étrangers du coton brut |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0285602B1 (fr) |
| AT (1) | AT394453B (fr) |
| DE (1) | DE3872418D1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7700820B2 (en) | 2006-11-30 | 2010-04-20 | Kimberly-Clark Worldwide, Inc. | Process for controlling the quality of an absorbent article including a wetness sensing system |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE103069T1 (de) * | 1988-10-11 | 1994-04-15 | Rieter Ag Maschf | Erkennung von fremdgut in textilfasern. |
| DE3926346A1 (de) * | 1989-08-09 | 1991-02-14 | Rieter Ag Maschf | Verfahren und vorrichtung zur ermittlung von mit fremdkoerpern verunreinigtem fasergut |
| JPH0382828A (ja) * | 1989-08-28 | 1991-04-08 | Tatsumi Eyaa Eng:Kk | 原綿中の異物の検出装置 |
| IT1236911B (it) * | 1989-12-21 | 1993-04-26 | Marzoli & C Spa | Procedimento e dispositivo di alimentazione di materiale in fibre in una macchina di preparazione alla filatura, in particolare un apritoio |
| DE4129882C2 (de) * | 1990-09-17 | 2002-02-07 | Truetzschler Gmbh & Co Kg | Vorrichtung zum Abscheiden metallischer Verunreinigungen aus einer Fasertransportstrecke in der Spinnereivorbereitung |
| DE4143212A1 (de) * | 1991-12-30 | 1993-07-01 | Rieter Ag Maschf | Sender-empfaenger-system |
| BE1009031A3 (fr) * | 1995-01-11 | 1996-11-05 | Houget Duesberg Bosson | Regulation du debit d'une carde. |
| EP0824607B2 (fr) * | 1995-05-12 | 2005-07-27 | Jossi Holding AG | Procede et dispositif permettant d'identifier et de separer des corps etrangers contenus dans un materiau fibreux |
| DE10121421A1 (de) * | 2001-04-27 | 2002-10-31 | Rieter Ag Maschf | Verfahren und Vorrichtung zum Erkennen und Ausschneiden von Fremdstoffen in Fasermaterial |
| US6870897B2 (en) | 2001-11-14 | 2005-03-22 | Texas Tech University System | Method for identification of cotton contaminants with x-ray microtomographic image analysis |
| DE102004019387A1 (de) * | 2004-04-19 | 2005-11-03 | Massen Machine Vision Systems Gmbh | Erkennung und Aussortierung von Kontaminationen in geförderten Materialströmen |
| CN101265622B (zh) * | 2008-03-07 | 2010-06-02 | 大丰市供销机械厂有限公司 | 籽棉异性纤维清理机 |
| CN101598675B (zh) * | 2009-07-03 | 2011-05-04 | 山东农业大学 | 棉花异性纤维的互信息识别法 |
| CH716607A1 (de) | 2019-09-17 | 2021-03-31 | Uster Technologies Ag | Verfahren und Vorrichtung zur Überwachung von Fremdmaterialien in einem Textilfasergebilde. |
| CN114622308A (zh) * | 2022-03-14 | 2022-06-14 | 王陶 | 一种基于人工智能的纺织过程自适应清棉系统 |
| CN120967556B (zh) * | 2025-10-22 | 2025-12-26 | 南通丰然纺织有限公司 | 基于多设备协同的清棉机工作质量自测控制方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3158291A (en) * | 1961-09-13 | 1964-11-24 | Fiber Controls Corp | Textile fiber web former and electrical means for maintaining constant thickness thereof |
| US3548461A (en) * | 1968-08-05 | 1970-12-22 | Ferdinand Reiterer | Textile fiber web forming and feeding apparatus and method |
| DE3436498C2 (de) * | 1984-10-05 | 1994-08-25 | Truetzschler Gmbh & Co Kg | Vorrichtung zum Ermitteln von Fremdkörpern, wie Metallteilen, in Textilfaserballen |
-
1987
- 1987-03-25 AT AT71987A patent/AT394453B/de not_active IP Right Cessation
-
1988
- 1988-03-23 EP EP19880890070 patent/EP0285602B1/fr not_active Expired - Lifetime
- 1988-03-23 DE DE8888890070T patent/DE3872418D1/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7700820B2 (en) | 2006-11-30 | 2010-04-20 | Kimberly-Clark Worldwide, Inc. | Process for controlling the quality of an absorbent article including a wetness sensing system |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA71987A (de) | 1991-09-15 |
| EP0285602A1 (fr) | 1988-10-05 |
| AT394453B (de) | 1992-04-10 |
| DE3872418D1 (de) | 1992-08-06 |
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