CN101619537B

CN101619537B - Apparatus for detection of foreign matter in plastic material in spinning room preparation, ginning or like installation

Info

Publication number: CN101619537B
Application number: CN200910203140.8A
Authority: CN
Inventors: G·***
Original assignee: Truetzschler GmbH and Co KG
Current assignee: Trutschler Group Europe
Priority date: 2008-07-03
Filing date: 2009-06-02
Publication date: 2014-02-12
Anticipated expiration: 2029-06-02
Also published as: BRPI0901598B8; BRPI0901598B1; DE102008031199B4; CN101619537A; BRPI0901598A2; DE102008031199A1

Abstract

The present invention relates to an apparatus in a spinning room preparation, ginning or the like installation for detection of foreign objects of plastics material, such as polypropylene, weaving plastic, plastic sheet and the like, in or between a stream of fibre material, especially cotton. In the apparatus, the foreign objects in or between the stream of fibre material are arranged to be penetrated by a polarised light source cooperating with a detector, preferably a camera, weak color and/or transparent foreign objects are penetrated, and the light from another light source is applied on the stream of the fibre material. For effectively detecting the white and/or transparent plastic material sheets by a simple structure, the foreign objects in or between the stream of the fibre material are arranged to be illuminated by an ultraviolet light source or reflected light, and the ultraviolet light source cooperates with the detector, wherein the detector is capable of detecting the penetrated and illuminated foreign objects and separating them from the fibre material.

Description

In the device such as spinning room preparation, ginning for detection of the equipment of plastic material foreign matter

Technical field

The present invention relates to a kind of in spinning room preparation, ginning etc., install for detection of the fabaric mterial flow such as cotton between or among the equipment of plastic material foreign matters such as polypropylene, woven plastics and plastic sheet, wherein between fibrous material or among foreign matter can be by being subject to transillumination (transmitted light) with the crew-served polarized light source of detector means (camera), light and/or transparent foreign matter is by transillumination, and from the light action in another source on fabaric mterial flow.

Background technology

Impact for cotton or the optical function external fiber of spinning room preparation machine of synthetic fiber and a problem of the operation of foreign matter separator is: due to these light color or transparent plastics (for example, polyethylene or polyacrylic packaging film or packing fiber) low optical contrast, can not detect fully or can not detect them completely.

In the situation of the known device (EP0545129B) of the polypropylene fibre in rolling up for detection of silk, compare two images.An image is by producing with polarised light transillumination; Another image is by carrying out transillumination generation with white light.Material must have the form that is oriented substantially parallel silk fiber.Evaluation process need to compare two images.In order to make two images can arrive register, below two checkpoints, synchronized movement in the situation that, material transmits on conveyer belt.This patent description a kind of equipment of only using a camera operation.Yet, must form two images (forms with white light with polarised light formation and another).For this reason, illuminator is connected in succession, to can only take two images with a camera.Yet, to do like this and must interrupt the motion of material, scan operation occurs in succession and silk fiber volume advances gradually.The structure of this equipment is expensive.Especially inconvenient is switch illuminator, discontinuous transferring material and take two images.Another significant shortcoming is to use the polarised light of transillumination can not recognize these packaging material and plastic wastes, for example, can not detect intensive or thick packing chip.Similarly, the plastic type that does not change the polarization polarized state of light of transillumination is undetectable.

Summary of the invention

Therefore the present invention solves provides a kind of problem starting the equipment of described type, and it can avoid above-mentioned shortcoming, and especially in configuration aspects, in simple mode, allows effectively to detect white and/or transparent sheet of plastics material.

By provide a kind of spinning room prepare or ginning device in for detection of fabaric mterial flow among or between plastic material foreign matter equipment and can address the above problem, in this equipment among fibrous material or between foreign matter be arranged to by with the crew-served polarized light source of detector means by transillumination, wherein can change the light and/or transparent foreign matter of polarization polarized state of light by transillumination, and simultaneously, from the light action of ultraviolet source on fabaric mterial flow, it is characterized in that, among fibrous material or between the foreign matter that presents fluorescent effect when with UV-irradiation be arranged to by ultraviolet source illuminated, and described ultraviolet source and described detector means co-operating, described detector means can detect by transillumination and irradiated foreign matter and at apparatus for evaluating place, these foreign matters and described fibrous material be distinguished, polarised light and the luminous energy that reflects due to ultraviolet irradiation are jointly by same described detector means record.

According to the present invention, utilize the detection of polarised light to be combined with utilizing the detection of UV light, such as the basic components of camera, inspection chamber, glazing channel or evaluation means, needn't be arranged to double, and two detection methods of mutually not interfering.This is arranged in minimum space concentrates necessary parts also therefore to save installing space.Be combined with different wavelength (visible ray/UV light) and different polarization states (polarization/unpolarized).Because only take image rather than two images that two light sources of a use irradiate simultaneously, save and switch illuminator and discontinuous transferring material.Another advantage is can realize irradiating and image acquisition simultaneously, thereby first makes can not occur subsequently the convergence of two compositions, and can not obtain and cause temporal resolution to reduce due to dual image.According to the present invention, realized unpolarized irradiation (there is no visible spectrum composition) (reverberation irradiation) and with visible polarisation of light transillumination (transmitted light).By this combination, the image that formation can be caught by camera and there is no the switching/flash of light in illuminator; Thereby this image also comprises by changing polarization state and passing through two kinds of effects of fluorescence.Like this, even with the undetectable packaging material of polarised light and plastic wastes, also can in fibrous material, detect.The in the situation that of some synthetic fiber, and in the situation that the plastic material of being manufactured by Optical Bleaching Agent, the UV light of radiation changes into visible wavelength by fluorescent effect.So this can detect by normal camera arrangement.Camera is insensitive to the UV light of radiation.Only when changing into visible ray by fluorescent effect, UV light can realize detection.Therefore can successfully detect the plastic foreign body of utmost point broad variety.In addition, also can detect and not change the plastics kind of the polarization polarized state of light passing through or intensive or thick plastics chip.

Accompanying drawing explanation

Below will explain the present invention by specific embodiment shown in the drawings, wherein:

Fig. 1 illustrate that foreign matter detects and separator on have horizontal transport passage according to equipment of the present invention;

Fig. 2 illustrate that foreign matter detects and separator on be useful on polarized incident light and the catoptrical illuminator of UV, vertically transmission channel and directly sight line camera according to equipment of the present invention;

Fig. 3 illustrates as the equipment in Fig. 2, but has the camera of sight line deflection;

Fig. 4 illustrates the structure with two checkout gears;

Fig. 5 illustrates the side view having for the lighting device of polarized incident light and the equipment of glazing channel by diagram method;

Fig. 6 is the plane with the system that blows out of a plurality of air nozzles of arranging on width;

Fig. 7 is the block diagram of Electronic Control and adjusting device, and two sensing systems and two blow out system and are connected to described Electronic Control and adjusting device;

Fig. 8 be illustrated in four roller descaling machine downstreams according to equipment of the present invention;

Fig. 9 be illustrated in a roller descaling machine downstream according to equipment of the present invention; And

Figure 10 illustrate that foreign matter detects and separator on have vertical transmission channel according to device of the present invention.

The specific embodiment

With reference to Fig. 1, the external part separator SECUROMAT SP-FP of for example Tr ü tzschler for detection of the equipment with segregating foreign objects in, the upper inlet of feed well 1 with for the layout of pneumatic delivery of fibers air-flow A, be connected, described layout comprises fibrous material transmission fan (not shown), utilize ventilative surperficial 2 and the airflow guidance device 3 with moveable element fixed from air C separated (discharges) by fibrous material B of bleeding; The fibrous material existing in air-flow is by lateral steering back and forth reversibly on ventilative surperficial 2, and after impacting, fibrous material is because Gravity Basic falls and enter feed well 1 downwards from ventilative surperficial 2.Low speed roller 4a, 4b have dual-use function: they are used as the taking-up roller that makes fibrous material B leave feed well 1, and simultaneously as fibrous material B being fed to the donor rollers of high speed opening roller 5.Solid arrow represents fibrous material, and hollow arrow represents air, and partly fills the air-flow that arrow represents to have fiber.

Optical sensor system 6 is associated with total surf zone of opening roller 5, and this system is for example the line scan cameras 6 (CCD camera) with electronic evaluation means, for detection of the foreign matter particularly with brightness and/or aberration.Sensing system 6 is connected to the layout 7 (referring to Fig. 6) for separating of foreign matter by Electronic Control and adjusting device 35 (referring to Fig. 7).Arrange that 7 can produce short gaseous blast, described gaseous blast is advanced and produces inspiratory flow towards card clothing face, and described inspiratory flow makes foreign matter separated and they are removed to path 10 from card clothing face together with a few fibres.

The optical sensor system 6 for example, with camera (, multi-color cord smear camera) is arranged in the top of opening roller 5 obliquely, approaches the outer wall of feed well 1.Produce so compact joint space-efficient structure.Multi-color cord smear camera 6 point to opening rollers 5 card clothing and can detection fibers material in coloured foreign matter (for example, red fiber).Camera 6 covers the whole region of crossing opening roller 5 width, and described width is for example 1600mm.Opening roller 5 is rotated counterclockwise along the direction of curved arrow.Along direction of rotation, in the downstream of optical sensor system 6, be the layout 7 for generation of gaseous blast, the nozzle of described layout 7 is directed towards the card clothing face of opening roller 5, to the air of of short duration and unexpected injection is tangentially flowed with respect to card clothing face.Sensing system 6 is connected to and is arranged 7 by apparatus for evaluating and Electronic Control and adjusting device, and described layout 7 is connected with control valve device 8.When camera 6 uses relatively and foreign matter detected in the fibrous material of desired value on card clothing face, use control valve device 8 of short duration jet to penetrate at a high speed with respect to card clothing, this is jet, and by suction airstream, by foreign matter and a few fibres, the fiber cover from card clothing pulls, and under swabbing action, by path 10, they is taken away subsequently.

Gaseous blast roughly becomes tangentially to flow through passage with opening roller 5, from card clothing defibre covering (good fiber) and flow to glazing channel 17 as fibrous airstream D by fiber transmission pipeline 11.

Equipment 12 according to the present invention is connected with Pneumatic fiber transmission pipeline 11.Equipment 12 is suitable for any foreign matter in detection fibers material, for example, and cloth sheet, band, line, sheet material piece etc.According to favourable structure, equipment 12 for detection of among the fibre bundle of for example cotton and/or synthetic fiber or between the external part of plastic material, such as polypropylene tape, fabric and sheet material etc.Plastic material is light color, white or transparent.

At equipment 12, for detection of foreign matter in the situation that, fibrous material transmits by Pneumatic fiber transmission pipeline 11 in air-flow (fibrous airstream D), and described Pneumatic fiber transmission pipeline 11 is connected to suction source (not shown).As optical sensor system, two

camera

13a, 13b (for example, having the diode array camera of polarizing filter) are arranged in above fiber transmission pipeline 11 across machine-wide in shell 14, and described width is for

example 1600mm.In camera

13a, 13b (camera 13a is only shown) below, the wall of fiber transmission pipeline 11 has two transparent regions, the form of described two transparent regions is two parallel and

relative glass blocks

17a, 17b (windowpane), and described two

glass blocks

17a, 17b form glazing channel 17.As polarized light source, lighting device 18 is arranged on fiber transmission pipeline 11 belows.As ultraviolet (UV) light source, another lighting device 43 is arranged on fiber transmission pipeline 11 tops.In the downstream of glazing channel 17, for separating of blowing out device 19 and the fiber transmission pipeline 11 of the foreign matter 34 being detected by equipment 12, be connected.In the downstream of blowing out device 19, fibrous airstream D is sucked and is supplied with forward for further processing by fiber transmission pipeline 11.

In operation, camera 13 is by glass blocks 17a detection fibers air-flow D.Here, glass blocks 17a is projected in fibrous airstream D in the following manner: fibrous airstream D runs into glass blocks 17a, and flows and exert pressure and contact with it along glass blocks 17a.By the motion of fibrous airstream D, avoid not expecting very much or complete less desirable deposit on glass blocks 17a on the one hand, and if really produce a small amount of deposit, they will be wiped and take away by passage 11 from the inner surface of glass blocks 17a by fibrous airstream D.Fibrous airstream D has similar effect on the inner surface of glass blocks 17b.

If less desirable foreign matter 34 is detected by equipment 12 in fibrous airstream D, blowing out device 19 is activated and foreign matter 34 is blown in suction channel 20.

As shown in Figure 2, the light of light source 18 (being fluorescent tube here) changes into polarised light via polarizing filter 28 and enters in inspection area by glass blocks 17a.This inspection area is that the skewed slot by rectangular cross section forms in this example, and fibrous material 40 is guided through checkpoint by described skewed slot.The direction of transfer of material is here from the top to the bottom.(according to the embodiment of Fig. 2 and 3, can be applied in a similar manner according in the embodiment with horizontal channel 11 of Fig. 1).

Glass blocks

17a, 17b tilt slightly to material stream D, to make surface, are self-cleanings.Polarised light finally arrives camera 13 by inspection area and via the second glass blocks 17b, and described camera 13 is also equipped with the polarizing filter 42 as analyzer.This has stoped all incidents, the unaltered polarised light of light source 18, to produce dark image completely.In addition, observation ward is irradiated by the light source 43 (four UV fluorescent tubes form light source here) of radiation ultraviolet light.Arbitrary wavelength components in these light source 43 non-radiating visible ranges, to do not trigger the only camera 13 to the visible range sensitivity of spectrum.This is by the suitable optical light filter in light source self (being known as black light) or by realizing at the extra filter of light source arranged in front.If desired, the sensor of camera 13 or camera 13 must be furnished with another filter 44 that stops UV light, to make camera insensitive in UV wave-length coverage.

Owing to having, the camera 13 of analyzer 42 is not only insensitive but also insensitive to UV light to polarised light, and it will record dark image under normal circumstances.If there is now fibrous material 40 in inspection chamber, polarised light passes through this fibrous material 40, and fibrous material 40 is by UV irradiation.Polarised light is not changed by fibrous material 40, and dark image exists.UV light is not changed by fibrous material 40 yet.Because camera 13 is insensitive in this wave-length coverage, so do not have record to reflect back into the UV light of camera 13.Dark image exists.Yet, if in inspection chamber, exist can transillumination foreign matter 34 (for example, the strap of polypropylene or polyethylene sheets), these foreign matters change polarization polarized state of lights.This light now can be by camera 13 analyzer 42 and thereby guarantee that camera is triggered, this by be connected to assessment unit 38 record of camera and for example by downstream separation unit (blowing out device 19, referring to Fig. 1 and 6) use with from passage 41 these foreign matters 34 of discharge.For example, in foreign matter 34 can not the situation of transillumination (, the intensive packing chip of plastic material), do not have polarised light to arrive camera 13 by foreign matter.Instead, the UV light of radiation changes into the light of visible wavelength by fluorescent effect, and described fluorescent effect can be observed in the situation of many packaging material that is provided with Optical Bleaching Agent.This light can be only by stop UV filter 44 and thereby trigger camera 13, then by assessment unit 38 records that connect.

Fig. 3 illustrates similar layout, the installing space that wherein sight line 45 of camera needs with minimizing by mirror 46 deflections.

For major path width, across working width, distributing some may be favourable according to the checkout equipment of Fig. 2, to make each checkout equipment only be responsible for one section of passage 41.Yet, here also can be by only a detector and every section of assessment unit are realized two kinds of testing processes.

Fig. 4 shows the resulting layout of direction of observation when vertical with paper plane from material direction of transfer D, wherein some checkout equipments 47 ⁱwith 47 ^iIarrange abreast, to cover large working width.Each equipment 47 ⁱwith 47 ^iIall by sensing system 13 only, be responsible for equally discretely detecting the two with polarized light detection with UV light separately.In this example,

illuminator

18 and 43 is divided into multistage, but realizes by a continuous member.Similarly, divide task the assessment unit of each section can be further combined with to form an assessment unit 38 ⁱ.

As shown in Figure 5, be provided with holding device 21, it comprises four hollow profile 21a of extruded aluminium, 21b, 21c, 21d (maintenance profile), described four profiles are (across the machine-wide) layout that is parallel to each other along the longitudinal direction, and each freely their front surface be fixed to two frame wall (not shown) of machine.As example, pushing on profile 21a shown with set bolt 22.

Inner plane

21 ⁱ, 21 ^iI, 21 ^iII, 21 ^iVform respectively a part for the interior perimeter surface of fiber transmission pipeline 11 and pipeline 41.One side face 21 ⁱwith 21 ^iIthe layout that is parallel to each other, and face 21 on the other hand ^iIIwith 21 ^iVlayout is parallel to each other.The transverse area of facing mutually of extruding profile 21a to 21d all has the concave surface of the form of a circular cylindrical shell part separately.Along the direction of arrow G, H, around the rotatable shell 23 of its longitudinal axis M, be arranged between four faces of drum surface part form and be in contact with it.Shell 23 comprises the supporting member 24 (support profile) of two the hollow profile 24a of extruded aluminium, 24b, and the cross section of described profile 24a, 24b is all configured to a part for cylinder separately.The exterior contour of shell 23 is circular.The outer surface of the protrusion circle of support profile 24a, 24b is that maintenance profile 21a, the 21b of a circular cylindrical shell part and the face of 21c, 21d engage with recessed circular and form respectively.In the flat string face of support profile 24a, 24b, be furnished with respectively

flat glass blocks

17a and 17b, the outer surface of described string face and

glass blocks

17a, 17b is aimed at mutually.Each free string face and

glass blocks

17a, 17b by this way formed two relative faces form respectively the part of fiber transmission pipeline 11 and pipeline 41, and described part narrows down along the direction of fibrous airstream D.Two relative faces of

glass blocks

17a, 17b form glazing channel 17, and described glazing channel 17 is equally coning tapered along the direction of fibrous airstream D.By face 21 ⁱwith 21 ^iIformed forms little acute angle (acute and shallow angle) α with the face by string face and the formed supporting member 24a of glass blocks 17a ⁱ, and by face 21 ^iIIwith 21 ^iVformed forms little sharp angle α with the face by string face and the formed support profile 24b of glass blocks 17b ^iI.The face that all comprises separately string face and the tapered convergence of two relative faces of

corresponding glass piece

17a, 17b forms angle β.

Lighting device 18 (for polarization transmission light) is arranged on shell 23 belows for glazing channel 17, and this lighting device 18 has the shell 25 being arranged in the guide channel keeping on

profile

21c, 21d and extends the width across machine.In shell 25 inside, such as two

fluorescent tubes

26,27 of neon tube, arrange abreast side by side and extend the working width across machine along their longitudinal axis.Shell 25 is the hollow profiles of aluminium extrusion with cooling fin 25a.There is the microscler glass blocks 28a of polarizing filter, the end face 25b of shell 25 that 28b is arranged on to be faced with the shell 23 for glazing channel 17.The polarizing filter (not shown) of one

side camera

13a, 13b and on the other hand the polarizing filter (not shown) of glass blocks 28a, 28b are arranged to be in right angle.

Lighting device 43 (irradiating for UV reverberation) is arranged in shell 23 tops (referring to Fig. 1) for glazing channel 17.

Structure in the example of usage level transmission channel 11 (Fig. 1) key-drawing 5.This structure is similarly for Vertical Channel 41 (referring to Fig. 2 and 3).

In Fig. 6, blowing out device 9 comprises a plurality of air nozzle 30a to 30n, and each air nozzle is connected with corresponding valve 31a to 31n.Air nozzle 30a to 30n is connected to common compressed air line 32 by valve 31a to 31n, and described compressed air line 32 is connected to compressed air source 33.Reference numeral 11 represents fiber transmission pipeline, and described fiber transmission pipeline has the entrance for air nozzle 30a to 30n.Entrance for gaseous blast admission passage 20 shown in Figure 1.Valve 31a to 31n is optionally controlled by control valve device, for example, in the situation that there is foreign matter 34, valve 31d temporarily opens, to make unexpected air-flow leave air nozzle 30d and foreign matter 34 is blown to (referring to Fig. 1) in passage 20 with for example high speed of 15 to 25 meter per seconds.

According to Fig. 7, camera 6, image evaluation device 36 and be connected to Electronic Control and adjusting device 35 for the control valve device 37 of the valve of blowing out device 7.In addition,

camera

13a and 13b, image evaluation device 38 and be connected to Electronic Control and adjusting device 35 for the control valve device 39 of the valve 31a to 31n of blowing out device 19.

According to Fig. 8, equipment according to the present invention is arranged on for example downstream of the descaling machine 50 of Tr ü tzschler CL-C4 as shown in Figure 3.Fibrous material by air-flow E (air doffs) from last high speed card clothing roller 51 ₄remove, and as in fibrous airstream D admission passage 52, described passage 52 is U-shaped structures roughly, and its roughly an arm of U-shaped structure upwards merge in Vertical Channel 53.Fiber air mixture D flows through passage 53 from bottom to top.According to equipment of the present invention and passage 53, be connected as shown in Figure 3.After checkout equipment according to the present invention, there is blowing out device 19 (referring to Fig. 1).Do not have the fiber air mixture of foreign matter to supply with forward for further processing subsequently.According to equipment of the present invention (camera 13,

lighting device

18 and 43, tilting mirror 46), be not directly arranged in opening roller 51 ₄conveyor zones in.

According to Fig. 9, equipment according to the present invention is as shown in Figure 3 arranged on for example downstream of the descaling machine 54 of Tr ü tzschler CL-C1.Fibrous material is removed (air doffs) by air-flow E from high speed card clothing roller 55, and as fibrous airstream D, enters in the passage 56 being in tilted layout, and described passage 56 upwards merges in Vertical Channel 53 via bending area.Fibre blend D flows through passage 56 and passage 53 from bottom to top.Being connected according to equipment of the present invention and passage 53 as shown in Figure 3, similar with Fig. 8.After checkout equipment according to the present invention, there is blowing out device 19 (referring to Fig. 8), and do not have the fibrous material G of foreign matter to supply with forward for further processing subsequently.According to equipment of the present invention (camera 13,

lighting device

18 and 43, tilting mirror 46), be not directly arranged in the conveyor zones of opening roller 55.

According to Figure 10, the passage 57 of vertically arranging is arranged in shell 58.The layout of Figure 10 transmits fibrous material from the top to the bottom by passage, in this passage, monitors fibrous material.The arrow of partly filling of being indicated by Reference numeral I represents advancing of the fiber that transmits in air-flow downwards.In passage, the monitoring of mobile from the top to the bottom fiber has been found that it is favourable.

Parallel side wall 57 respect to one another ⁱ, 57 ^iIbe configured at least in part transparent block (referring to Fig. 2), form transparent path 62.Irradiation unit and two

sidewalls

57 ⁱ, 57 ^iIoutside be connected.

The first detector means comprises two CCD cameras 59 ⁱ, 59 ^iI(line scan cameras), described

camera

59 ⁱ, 59 ^iIby two tilting mirrors 60 that are arranged to certain angle ⁱwith 60 ^iIindirectly be applied to respectively glazing channel 62.Optical flat is arranged offset a little mutually.Passage 57 with camera 59 ⁱin one side of positioned opposite, be furnished with illuminator 61 ⁱ, and passage 57 with camera 59 ^iIin one side of positioned opposite, be furnished with illuminator 61 ^iI.Like this, the material in glazing channel 62 is by two

cameras

59 ⁱ, 59 ^iIfrom both sides, detect.

The shell 58 that comprises glazing channel 62 ⁱ, camera 59 ⁱwith 59 ^iI, tilting mirror 60 ⁱwith 60 ^iI, and illuminator 61 ⁱwith 61 ^iIform first detection module 63 ⁱ, at described first detection module 63 ⁱplace detect among cotton or between particularly coloured foreign material.

At first detection module 63 ⁱbelow is provided with the second detection module 63 ^iI.Each cross section of passage 57 is identical.

The second detector means comprises a CCD camera 13, and described camera 13 is applied to glazing channel 64 indirectly by being arranged to the tilting mirror 46 of certain angle.In passage 57 and sides camera 13 positioned opposite, be furnished with the there is polarizing filter illuminator 18 of (referring to Fig. 2), and in the face of in a side of camera 13, be furnished with the illuminator 43 for UV light at passage 57.Polarised light (transmitted light) and the reverberation (incident light) irradiating due to UV are jointly caught by this CCD camera 13.Light (transmitted light and incident light) is applied to the material glazing channel 64 from both sides.The shell 58 that holds glazing channel 64 ^iI, camera 13, tilting mirror 46 and

illuminator

18,14 form the second detection modules 63 ^iI, at described the second detection module 63 ^iIplace detect among cotton or between particularly light color or transparent plastics.

At the second detection module 63 ^iIbelow is provided with separation module 65.At shell 58 ^iIIin separation module 65 comprise the blowing out device 19 with row's nozzle, described blowing out device 19 is connected with the sidewall of passage 57.Be collection container 20 with what be connected with sidewall of this row nozzle (referring to Fig. 7) positioned opposite in passage 57, described collection container 20 is under swabbing action, for blowing out impurity from the stream transmitting.

Use the example of the descaling machine 50,54 in spinning room preparation to explain equipment of the present invention.It can be used in the ginning processing on gin similarly.

Claims

One kind spinning room prepare or ginning device in for detection of fabaric mterial flow among or between the equipment of foreign matter of plastic material, wherein among fibrous material or between foreign matter be arranged to by with the crew-served polarized light source of detector means by transillumination, wherein can change the light and/or transparent foreign matter of polarization polarized state of light by transillumination, and meanwhile, from ultraviolet source (43; 43 ₁-43 ₄) light action on fabaric mterial flow, it is characterized in that, among fibrous material (40) or between the foreign matter (34) that presents fluorescent effect when with UV-irradiation be arranged to by ultraviolet source (43; 43 ₁-43 ₄) illuminated, and described ultraviolet source (43; 43 ₁-43 ₄) and described detector means (13; 13a, 13b) co-operating, described detector means can detect by transillumination and irradiated foreign matter (34) and at apparatus for evaluating (38,38 ⁱ) locate these foreign matters and described fibrous material (40) to distinguish, polarised light and the luminous energy that reflects due to ultraviolet irradiation are jointly by same described detector means record.
2. equipment according to claim 1, is characterized in that, polarised light and the light beam that reflects due to ultraviolet irradiation can be by described same detector means records simultaneously.
3. equipment according to claim 1 and 2, is characterized in that, described detector means comprises described apparatus for evaluating.
4. equipment according to claim 1 and 2, is characterized in that, in order to cover large working width, some detector means are step-by-step arrangement abreast side by side.
5. equipment according to claim 1 and 2, is characterized in that, described detector means is camera, and in order to reduce installing space, the sight line of described camera can be by speculum or prism deflection.
6. equipment according to claim 5, is characterized in that, described camera has the polarizing filter as analyzer.
7. equipment according to claim 5, is characterized in that, described camera has the filter that prevents that ultraviolet light from passing through.
8. equipment according to claim 1 and 2, is characterized in that, for separating of the separator that goes out described foreign matter, is connected to described apparatus for evaluating, and described separator is arranged in detection zone along the downstream of direction of transfer.
9. equipment according to claim 1 and 2, is characterized in that, the foreign matter of plastic material makes the polarization vector rotation of polarised light.
10. equipment according to claim 1 and 2, is characterized in that, described polarised light is straight line polarization.
11. equipment according to claim 1 and 2, is characterized in that, described polarised light is circular polarization.
12. equipment according to claim 1 and 2, is characterized in that, described polarised light is elliptical polarization.
13. equipment according to claim 1 and 2, is characterized in that, the not homonymy that is arranged in fibre bundle for light source and the detector means of polarised light.
14. equipment according to claim 1 and 2, is characterized in that, the same side that is arranged in fibre bundle for light source and the detector means of ultraviolet light.
15. equipment according to claim 1 and 2, is characterized in that, realize depolarization for detecting.
16. equipment according to claim 1 and 2, is characterized in that, realize reflection and suppress for detecting.
17. equipment according to claim 1 and 2, is characterized in that, the foreign matter of plastic material is due to polarised light described in anisotropic behavior change, to make described polarised light become visible by the analyzer of detector means.
18. equipment according to claim 1 and 2, is characterized in that, fibrous material is arranged in glazing channel.
19. equipment according to claim 18, is characterized in that, fibrous material pneumatically transmits by passage.
20. equipment according to claim 19, is characterized in that, fibrous material is arranged on conveyer belt.
21. equipment according to claim 19, is characterized in that, fibrous material is arranged on separate roller.
22. equipment according to claim 21, is characterized in that, roller promptly rotates.
23. equipment according to claim 1 and 2, is characterized in that, detector means is line scan cameras.
24. equipment according to claim 1 and 2, is characterized in that, detector means is matrix camera.
25. equipment according to claim 1 and 2, is characterized in that, detector means comprises optical sensor.
26. equipment according to claim 1 and 2, is characterized in that, carry out colour and detect.
27. equipment according to claim 1 and 2, is characterized in that, carry out black and white detection.
28. equipment according to claim 1 and 2, is characterized in that, between polarized light source and fibrous material, are furnished with polarizer.
29. equipment according to claim 1 and 2, is characterized in that, are provided with the light source of polarized light-emitting.
30. equipment according to claim 28, is characterized in that, polarizer is integrated on polarized light source or is integrated in polarized light source.
31. equipment according to claim 1 and 2, is characterized in that, between fibrous material and detector means, are furnished with analyzer.
32. equipment according to claim 1 and 2, is characterized in that, detector means is provided with also the detector as analyzer.
33. equipment according to claim 32, is characterized in that, analyzer is integrated on the detector of detector means or is integrated in the detector of detector means.
34. equipment according to claim 1 and 2, is characterized in that, light reflection element is arranged in the light path of ultraviolet source.
35. equipment according to claim 1 and 2, is characterized in that, photorefractive element is arranged in the light path of polarized light source.
36. equipment according to claim 34, is characterized in that, speculum is as element.
37. equipment according to claim 35, is characterized in that, prism is as element.
38. equipment according to claim 35, is characterized in that, lens are as element.
39. equipment according to claim 8, is characterized in that, are useful on the described separator of segregating foreign objects in the arranged downstream of apparatus for evaluating.
40. according to the equipment described in claim 39, it is characterized in that, apparatus for evaluating and separator are electrically connected to mutually by control or switching device shifter.
41. equipment according to claim 1 and 2, is characterized in that, described apparatus arrangement is in the downstream of cleaning plant.
42. equipment according to claim 1 and 2, is characterized in that, described apparatus arrangement is in carding machine.
43. equipment according to claim 1 and 2, is characterized in that, described apparatus arrangement is in the downstream of carding machine.
44. equipment according to claim 1 and 2, is characterized in that, described apparatus arrangement is in the downstream of external fiber separator.
45. equipment according to claim 1 and 2, is characterized in that, foreign matter anisotropy be used to detect.
46. equipment according to claim 1 and 2, is characterized in that, the selection absorption behavior of foreign matter is used to detect.
47. equipment according to claim 1 and 2, is characterized in that, the optically-active behavior of foreign matter is used to detect.
48. equipment according to claim 1 and 2, is characterized in that, detector means can be distinguished the foreign matter of fibers form and the foreign matter of sheet-form based on its resolving power.
49. equipment according to claim 4, is characterized in that, ultraviolet source is configured to irradiate the linear lighting system of working width.
50. according to the equipment described in claim 49, it is characterized in that, ultraviolet source consists of close arrangement some independent light source together, to irradiate working width.
51. according to the equipment described in claim 49, it is characterized in that, ultraviolet source comprises the single source that is a form, and described single source irradiates working width via grenade instrumentation.
52. according to the equipment described in any one in claim 49-51, it is characterized in that, the light of ultraviolet source is bundled on surface to be checked by reflector or lens.
53. according to the equipment described in any one in claim 49-51, it is characterized in that, ultraviolet source comprises and stops all do not expect wavelength thereby the filters that only allow ultraviolet light to pass through.
54. equipment according to claim 18, is characterized in that, passage is arranged vertically.
55. equipment according to claim 18, is characterized in that, passage is arranged obliquely.
56. according to the equipment described in claim 54 or 55, it is characterized in that, fibrous material transmits from the top to the bottom and passes through passage.
57. according to the equipment described in claim 54 or 55, it is characterized in that, fibrous material transmits from bottom to top and passes through passage.
58. equipment according to claim 18, is characterized in that, channel water level land is arranged.
59. equipment according to claim 1 and 2, is characterized in that, the described equipment that is arranged in opening roller downstream is not directly arranged in the conveyor zones of described opening roller.
60. equipment according to claim 1, described fibrous material is cotton.
61. equipment according to claim 1, described plastic material is polypropylene.
62. equipment according to claim 17, described anisotropic behavior is birefringence.
63. according to the equipment described in claim 45, and described anisotropy is birefringence effect.
64. according to the equipment described in claim 46, and described selection absorption behavior is dichroism.
65. according to the equipment described in claim 47, and described optically-active behavior is that rotation disperses.
66. equipment according to claim 1, described plastic material is woven plastics.
67. equipment according to claim 1, described plastic material is plastic sheet.