CN1156620C - Fibre sorting device - Google Patents

Abstract

The invention relates to a method and a device for sorting the fibres of a fibre assembly (10, F1, F2) which is delivered to a fibre sorting device (30, 38, 75, 76, 5, 63). Known devices, which use air to sort the fibres on a non-woven fleece held on both sides, have insufficient separation power. The invention therefore provides a method and a device offering a greater degree of separation. To this end the fibre assembly is clamped by means of clamping elements (44, 3, 75, 76, 58) at right angles to its direction of transport and the free end (E1) extending beyond the clamping point (K1, K2) is subjected to an air flow which is capable of removing and evacuating unclamped components (such as short fibres, neps, dust, etc.) from the free end.

Description

Fibre sorting device

Technical field

The present invention relates to a kind of device of method and this method of realization of the fiber that is used for the category fiber structure, its fibre structure is to be provided to fibre sorting device by feed unit.

Background technology

In order to remove staple fibre, cotton knot from fibre blend, foul and other composition are known that the fibrous material with the lap arbor form is provided to the carding machine that is used for combing.In this process, fibroreticulate end be held by a nipper and stretch out outside the nipper bite the end by the circle carding machine combing element finish mechanical carding.In this carding process, under certain situation, can produce infringement to fiber.Shortcoming in the known method is discontinuous operator scheme in addition, and therefore during working cycles, it must the big quality of reversion.

Therefore proposed a kind of device in the disclosed application number WO98/04765 of PCT, it finishes separating of staple fibre, foul and other composition by an air flow, and the air flow that is adopted is actually and produces on the throughput direction of non-woven fleece.In this process, guided the non-woven fleece of an air conduit to bear a grasping force in two places, guarantee obtained long fiber can not taken away by air flow with activation.

Adopt this device can reach some separating effect.Yet it also is not gratifying, and is autotelic from having all staple fibres of annular bondedfibre fabric taking-up of air flow because this device is difficult to.

In the still undocumented Swiss Patent application of another one, this application is application on February 3rd, 1998, application number is CH-254/98, and its suggestion for increasing the purpose of separating effect, at first was ready to fibrous material with corresponding form before fiber arrives isolation catheter in this system.In this suggestion, before fiber stands the air flow effect, fibrous material is prepared to become independence and be filament adjacent, vertical arrangement.Although it should be noted that to have produced improved separating effect, in waste material, contain some less long fibers (batch of material fiber).In order further to increase separating effect, suggestion is the off-the-shelf non-woven fleece of guiding on some continuous exchange separation stage.Although use this device to manage to improve separating effect and disintegrate-quality, it is still and can not meets the demands.Use the separating degree that this device can not realize that still common carding machine will reach and the target of quality.

Summary of the invention

According to the said apparatus and the situation of prior art, the object of the invention provides a method and a device, to be compared to known Pneumatic method and can to obtain higher separation degree and higher disintegrate-quality by this method and apparatus.

On the one hand, this purpose realizes by a kind of method, wherein fibre structure is to be held on the direction transverse to its conveying and by being held the effect that the free end that stretches out on the position is subjected to an air flow, its air flow can extract and carry away some components (for example staple fibre, cotton knot, foul or the like) of not clamping from free end.

In this suggesting method, separating technology (classification technology) is to adopt air to finish on the openend of fibre structure (lap, non-woven fleece, fibre structure or the like) in carding machine under the situation of mechanical separation technology.Make it possible to blow out and carry away the composition of not clamping at the air flow that produces towards the free end direction of fibre structure.The size of the fiber quality that is provided is provided the intensity of air flow.

In order to improve separating effect, the fibre structure of its suggestion before arriving sorter will be subdivided into has filamentary independently fibre bundle, and its fiber is to stretch in a longitudinal direction and is approximate mutually being arranged in parallel.This produces autotelic grip with regard to making for the fiber that vertically is stretched this moment, and it has guaranteed only to have in assorting process a spot of long fiber to be carried secretly away.

For the producd fibers bundle, its suggestion is that fibre bundle is intermittently to produce by the free end of corresponding extraction elements by fibre structure.Known a kind of like this separation that becomes the fiber of fine fibre bundle by the principle of fiber wadding (fibroliner).Around this principle, fibre bundle has the staple fibre that is arranged on the fibre bundle front end (clamping line) in end arranged cells.In order to remove the staple fibre that places on the head end, utilize a kind of fiber quality with such method preparation, it is possible to be that separating technology (classification technology) is afterwards realized autotelic grip.

Further suggestion is that as seeing on the throughput direction of fibre bundle, fibre bundle is held with front end one preset distance that stands the air flow effect apart from it in assorting process.Described front distance apart from the fiber head end can compare with the setpoint distance of combing.All are arranged in and are not held fixing staple fibre on the head zone and are removed according to the effect of air flow.

Suggestion preferably is to be seen that by bite air flow is the free-ended direction guiding towards fibre structure or fibre bundle.

Air flow can by on the atmospheric pressure or under pressure source produce.

Further suggestion is, after classification technology, is transported on the downstream sliver building mortion that is used to form sliver at the fibrous material that the chucking power on the bite is released and is classified.

The shaping of sliver can be generated by the superimposed layer of the fibre bundle that is classified.This method is corresponding to the joint technology on traditional carding machine.

A method of further advising adopts at least two fibre structures to be provided on the fibre sorting device simultaneously, and the effect of normal air stream is stood in the end of fibre structure.The end of fibre structure independently be joined together and the end of air at fibre structure between when the zone of its bite begins wind drift, this is very favourable.This just makes end that compressed air is blown into connection in autotelic mode so that promptly and separate all staple fibres, and this staple fibre is to be arranged in the inside of end and not by any clamping.

In order to strengthen separating effect, its suggestion is the downstream that at least one additional compressed air stream is provided at respective clamp point, and its air flow is towards free end and is on the outer surface of the connection end of fibre structure.This different time that just might apply so produce air pulse at interval.

The present invention can also realize that it provides some clamping devices by a device, and this clamping device is certain distance gripping fibers structure and the device that provides the free end generation air flow from the bite to the fibre structure at the free end of distance fibre structure.

In order to be ready to fibre structure, its suggestion provides such device, become the independent filamentary fibre bundle that has in order to open fibre structure, its fiber is being arranged in rows of being stretched in a longitudinal direction and being parallel to each other basically, its fibre structure is by feed unit being provided progressively, and providing such device, it is used for tow transport to the downstream sorter.In this respect importantly, during transferring to the actual classification device, to keep the structure of fibre bundle of formed thereby or vertical arrangement of fiber.

Its suggestion is, form feed unit by a drafter, the device that is used for the production fiber bundle is to be made of following manner, it comprises a rotating fixedly roller, this roller forms a bite with a rotating fixedly suction drums, and its suction drums is the place, opposite that is in the transfer position of drafter.Be preferably, drafter can be an a kind of apron draft system.

For the autotelic stretching step that realizes fibre bundle with after stretching step, guide fibre bundle exactly, its suggestion is, drawing rollers are with the apron that single-revolution keeps on the part section of its circumference, if in this respect advantageously apron after bite, rest on the described circumference on the part section of suction drums.This has just guaranteed the ideal guiding of shaped fibers bundle.This is directed in stressed mode with regard to meaning fibre bundle, has guaranteed that therefore independent fiber keeps its state when carrying end.

In order to strengthen grip during the stretching from the fibre bundle of fibre structure end, its suggestion is, suction drums provides some bump, and these bump are distributed on the circumference of its suction drums in the mode of a determining deviation.These bump and the common reliable delivery that forms a reliable bite and guaranteed to be fixed on the fiber in the bite that combines around the set apron of stretching roller.Its bump can be made so that produce meticulous clamping by elastomeric material.Also possible is to be formed with the stretching roller with having the tectal suction drums co-operate of elasticity.

Another embodiment is possible to be the bump of saving on the suction drums, and bump is to be applied on the replaced revolution apron.What only need guarantee is might apply an autotelic chucking power in the taking-up zone between suction drums and stretching roller so that extract fibre bundle out from the end of the fibre structure that provided.In addition, must guarantee further reliably to carry and not have and cause any compression.

Distance between the bump of fixing between suction drums and apron must be greater than the length of the longest fiber in the fibre structure.

In order to support the guiding of the fibre bundle that has stretched, with possible be that the inside of suction drums in the drawing-off zone applies a negative pressure so that fiber end will rely on the suction drums reliably.

Further suggestion is, be provided with one with the separation cylinder of axially parallel in the rotatable maintenance of suction drums, it separates cylinder provides some radially towards the bothrium of outside, corresponding to a negative pressure chamber, this negative pressure chamber is fixing is placed in and separates in the cylinder and be provided with an aspirator these bothriums in the position of the excircle minimum range of distance suction drums.The shell of suction drums can be selected by this way with the distance of separating between the cylinder, and in the moment that applies negative pressure, the useful effect of clamping is on the fibre bundle that is applied in the suction socket of corresponding location.Consequent clamping line is a distance that is positioned at apart from the fibre bundle front end, and consequently all compositions that are not held (as staple fibre) are taken away to enter in the suction socket by the air flow that is produced.

In order to obtain accurate and limited bite, its suggestion is, as rotation direction from the separation cylinder, elastic heave part on the separation cylinder excircle is adjacent to the respective openings of suction socket, and its bump is carried out a clamping effect in suction drums with the excircle of position of separating minimum range between the cylinder and suction drums.In this embodiment, certain distance is arranged at the shell of suction drums with separating between the cylinder, this distance is less than the height that separates cylinder elastic heave part in the radial direction.This just guaranteed the elastic heave part on this zone distortion and can on fibre bundle, apply a pressure thus.

Purpose for the reliable transmission of fibre bundle, its suggestion is, provide some devices to make that in suction drums inside the place, subregion produces a negative pressure at least, described subregion is meant that baffle plate leans against the zone and the place of adjacent sub between the transport zone of cylinder at the excircle place of suction drums.Negative pressure only needs enough big, so that the filamentary position in the fibre bundle and being arranged in can not change during being transported to transferring position.Yet can part is possible be, can remove short composition from the fibre blend this zone, as dust by the enforcement of negative pressure.

In order to remove the fibrous material that has been selected, its suggestion is that a rotatable doffer who keeps is set, and its axially parallel is in separating cylinder, and this doffer contacts with the excircle that separates cylinder.

The doffer can provide the cloth structure on its excircle.

For the front end of fibre bundle is sent in the corresponding suction socket reliably, possible is to provide an over pressure source in the inside of suction drums so that producing compressed air stream on the direction of suction socket for selecting technology.

When fibre sorting device provided at least two fibre structures by transport and provides the clamping element of removable maintenance for each fibre structure, its clamping element matched with a normal guidance element, then obtains another embodiment of the present invention.

When the clamping device of a corresponding configuration was provided, possible was the sorter that offers fiber more than two fibre structure.

Also with possible be before bite by drafting system guiding fibre structure so that be subsequently the same fibre structure of classification technological preparation.

Advise as another embodiment, dispose at least one air nozzle, its opening is down and between two bites, and it links to each other with a compressed air source.Air nozzle extends on the whole width of the fibre structure that is provided.

One version is also possible to be, here some adjacent fibre structures (for example some slivers) are provided to bite.

Term " fibre structure " can comprise for example non-woven fleece, lap, sliver or similar structure.Further preferably improvement as described below also can relate to an embodiment, and here only a filament structure is provided to clamping element (this just means the end that does not have to engage at least two fibre structures).

About the supply of some fibre structure, its further suggestion be, induction element provides some relative guiding grooves, carries roller to sink in the groove, it is as transport.

In order to strengthen separating effect, it further advises, air nozzle is combined in zone and the downstream of one clamping surface of clamping element in the clamping element and is connected with a compressed air source.This also makes in a longitudinal direction from the end pressurization with compressed air side.Separating effect is strengthened like this.

For the selecteed end from fibre structure pulls out fibre bundle, its suggestion is, the downstream of the clamping element that a pair of roller is configured in, and it forms a clamping line.

Possiblely be, provide movable feed unit in the direction towards a pair of roller, at this moment clamping element is released, so that the front end of fibre structure can be held by the clamping line of the paired roller in downstream.

Traction technology can be considered to be equal in the carding machine by the separating technology of the fibre bundle of combing.

During the air blowing technology of the free end of fibre structure in order to give off released waste material, its suggestion is, in pairs in the middle of some rollers of roller one of at least roller to be provided as be a bored roll, it has some towards outer opening, has the hollow chamber that is connected with negative pressure device.Only on the part scope of the circumference of bored roll, so that during separating technology, closed clamping line is on the one hand on paired roller and prevent the suction of expanded material towards outer opening.One additional fastening lid can be provided at the inside of bored roll, and it causes towards outer opening (quilt) closure.

Be preferably, a sliver building mortion is arranged on the downstream of paired roller.This device can form by suction drums and the roller of drawing that matches with suction drums.

In order to engage and receive the fibre bundle that provides by paired roller, its suggestion is, the interior chamber of suction drums is connected with a negative pressure source and some coverings are provided at the inboard of suction drums, except the part suction in suction drums and before drawing bite between the roller, it cuts off surrounding air and enters interior chamber.

In order to grip and to keep any residual component such as cotton knot, grume etc., its residual component can not discharged by air flow, and its suggestion is that the combing element that can advance is provided between clamping element and the paired roller.The top comb of described combing element and carding machine is more or less the same, and it pierces through during separating technology separated fibrous material.Same function also can be finished by the combing element among the present desired embodiment.

The sliver aspirator also can be made of a rotation conveyer belt, and it is transverse to the discharge direction setting of roller in pairs.Very advantageously, to provide the conveyer belt with ventilative perforate and providing to be used in this respect being input to device on the conveyer belt in the negative pressure that is produced under the conveyor zones at least.This has just guaranteed the reliable discharge of fibre bundle on conveyer belt.

Further advise a kind of like this device, it is provided with at least one guiding device, and this guiding device is provided on the fibre sorting device by the transport that matches with an induction element along the free end extension and the fibre structure of fibre structure.This has just guaranteed that free end is being directed during the technology of blowing on a side.Be preferably, the clamping element of a removable maintenance and moving meter match and merge and its formation one bite.

Further suggestion provides at least one air nozzle moving meter, and its air nozzle opening is to be connected between the guiding device in the free end of fibre structure and bite downstream and with a compressed air source.

This just makes and produces an air flow that between the free end of fibre structure and induction element it is a plate that its induction element is preferably.Negative pressure region flows along plate by air and produces, and its negative pressure region will pull free end towards the surface of plate and guarantees that thus its air flows through free end.Identical effect mode has been used in the application of other type, promptly separates the end that makes the test from winding up roller, and it for example discloses in EP-A1 482 475.Yet in this case, air flow only is used to separate web and the purpose that is not used for selecting, because in this case, the clamping line is not defined and separating technology has at least 3 hours interval.

The plate that the end of guiding device is provided or has flexible structure by suggestion, for flow separation technology or to blow out possible the shifting process of end be to make the free end of plate put the another location, its help or help above-mentioned technology.This adjusting can be finished by the adjusting device on the free end that is bonded on plate of hereinafter suggestion.

In order to draw separated composition, very advantageously when aspirator be set at guiding device free end should the zone time, the free end of its (this zone) and fibre structure is opposed.

Further suggestion provides the roller of a pair of displaceable or provides a sliver building mortion in the downstream of paired roller in the downstream of bite.This just makes that paired roller moves so that pull out fibre bundle from described end towards free end after flow separation technology.

Description of drawings

Accompanying drawing with reference to given is further explained in detail and describes the other advantage, wherein:

Fig. 1 has represented as the diagrammatic side view according to first embodiment of fibre sorting device of the presently claimed invention;

The expression of Fig. 1 a-1c signal the shaping of fibre bundle;

Fig. 2 has schematically illustrated another embodiment according to fibre sorting device of the presently claimed invention;

Fig. 3 has represented the cut-away section view that is exaggerated of Fig. 2;

Fig. 4 has represented some embodiment of nozzle perforate;

Fig. 5 has represented a kind of version according to an embodiment of the sliver building mortion of Fig. 2;

Fig. 6 is the top schematic view of Fig. 5;

Fig. 7 represents is schematic diagram according to another embodiment of fibre sorting device of the presently claimed invention.

The specific embodiment

Fig. 1 has represented a drafter 1, and for example sliver 10 is drafted in this mechanism.As a kind of tape drawing mechanism, its drafter 1 is equipped with a pair of apron 2.The drafted sliver 10 that is provided by apron 2 is provided between thereafter the shaping cylinder 3 and roller 5, and its roller 5 is oppositely arranged with shaping cylinder 3.Be placed on belt 6 on other roller 7 and 8 around roller 5 by the bendings of part.The drive unit 12 that roller 7 and schematically illustrates is connected.

As shown in the figure, suction drums 3 remains on some deflector rolls 14 rotationally, is connected with a drive unit 15 with at least one deflector rolls of these deflector rolls.

Some resilient clamp bars 18 are connected on the shell of suction drums 3, and these are parallel to the turning cylinder of suction drums and axially extend.

A fixing conduit 20 is arranged on the inside of suction drums 3, and its opening is towards the side of the inwall of suction drums.Conduit 20 is connected on the negative pressure source 22 by a line that schematically illustrates 21.Air flow is produced, therefore at its air flow of this location of suction drums shell from the external action to inside.It schematically illustrates with the arrow with dotted line.

It also shows, a corresponding off-the-shelf fibre bundle 24 is placed on the regional interior of conduit 20 and is fixed on suction drums shell SU place by the negative pressure that is applied on the conduit 20.To do detailed description below for the separating technology that obtains fibre bundle 24.

One separate cylinder 30 be rotation movable remain on suction drums 3 below, its separate cylinder within it portion be provided with a stationary pipes 32.The inner space of pipe 32 is connected in negative pressure source 34 by a line that schematically illustrates 33.Pipe 32 is provided with slit 36 in the axial direction, and this slit 36 is corresponding with some air grooves 38, described air groove 38 be sagittal plane outwardly and be around described pipe setting.Separating cylinder 30 is to settle by this way, and when not having air groove 38 and opening 36 opposed, the surrounding environment of its slit 36 relative separation cylinders 30 is sealed.

Separate cylinder 30 and be held by some guide reels 40 that schematically illustrate on its position, at least one roller of guide reel 40 is connected with a drive unit 42 simultaneously.As the rotation direction from separation cylinder 30, some flexible members are fixed on the shell AU of each air groove 38 back.The function of described resilient clamp element 44 will be described in detail below.

A doffer 46 is engaged on the excircle AU that separates cylinder 30, and for example this doffer provides cloth spare 47 (part illustrates) on its circumference.The fibrous material 50 of being discharged by doffer 46 form of non-woven fleece (for example with) is transported in the further processing step of drawing roller 51 in pairs and being transported to the downstream (not shown).

The operator scheme of described device is described below:

For example drafter 1 provides a sliver 20 and drafted in drafter.The end E that is stretched out by apron 2 arrives in the gap between the circumferential surface SU of suction drums 3 and the belt 6 that guides on roller 5.Because the rotational motion of suction drums 3, the element one of in some resilient clamp elements 18 arrives described zone and facing to the outer surface clamping end E of the belt 6 of the location of roller 5.The peripheral speed that its true result is a suction drums 3 is higher than the transporting velocity of apron 2, and fiber is pulled out from the end E of sliver 10, and its fiber is clamped between clamping strip 18 and the belt 6.This has just produced a kind of filamentary thin fibre bundle 24 with vertical alignment.

Fig. 1 a to 1c has represented to be used to form the process schematic representation of fibre bundle 24.The end E that provided by apron 2 is provided Fig. 1 a.Produce clamping line KL and clamping line KL with respect to end E and displacement by clamping strip 18.Shown in Fig. 1 b, produce a thin section D and thereupon the further displacement fibre bundle 24 of bite from end E separation, shown in Fig. 1 c.The head K of fibre bundle 24 forms a kind of fibre bundle of fiber end orientation, and its staple fibre is located substantially on the location of head K.Be held through during the roller 5 and 8 at the belt 6 on the separated fibre bundle 24 and the clamping effect between the clamping element 18, guaranteeing the autotelic further conveying of fibre bundle 24 like this and do not have its structure of any change (fiber that vertically is arranged in rows).

In case fibre bundle has passed through roller 8, it is fixed on the surperficial SU of suction drums 3 by the negative pressure that is applied in the conduit 20.The front end K of fibre bundle 24 still relies on the clamping strip 18.And shown in fibre bundle 24 on the direction of separating cylinder 30, carrying, other fibre bundle 24 (not shown) takes out from end E by downstream clamping strip 18.The conveying of sliver 10 is finished continuously, and the technology of drawing that is used for producd fibers bundle 24 then has discontinuous situation to take place.

Next further carry or further rotation, shown fibre bundle 24 arrives the taking-up zone A between suction drums 3 and the downstream separation roller 30.The result who rotates simultaneously of this detaching roller 30, clamping element 44 closely is contacted with fibre bundle 24, therefore produces a clamping between the shell SU of suction drums 3 and clamping element bar 44.Select by this way with the position, angle of separating 30 operating periods of cylinder in suction drums 3, finish apart from the certain distance of the front end K of fibre bundle 24 by the clamping line that clamping element bar 44 produces.The distance of described head end apart from fibre bundle is considered to equal the distance that combing machine sets and can sets by the position, angle that changes between cylinder 3 and 30.Soon, the end of suction socket 38 and opening 36 are overlapping after producing described clamping, because the result of the negative pressure in the pipe 32 enters into the inboard thereby produce an air flow.Consequently, the front end or the head K of outstanding fibre bundle 24 are introduced in the suction socket 38 on the bite of clamping element 44.The all components (staple fibre) of putting in the suction socket 38 and not being held the end of element 44 clampings extracts from fibre bundle 24 and inwardly is drained in the conduit 32 by air flow.Negative pressure source 34 is used for entrained material is discharged in conduit 32 from managing 32 zone.

The processing pipe 32 that is fixed can be settled by this way, that is, the impurity of any deposition between the rotatable parts of fixed part and separation cylinder is equally by continuous siphoning away.

In the further rotating process of cylinder 30, the front end of fibre bundle 24 remains on groove 38 places; The rear end is quilt lifting a little owing to the centrifugal force that is produced.In case described rear end arrives adjacent doffer's 46 zone, it is held by cloth 47, and consequently fibre bundle 24 is carried and pulls out from air groove 38.During described carrying, the end of fibre bundle 24 is placed in the afterbody end of a fibre bundle that has before stretched, and consequently it produces a kind of connection of similar roofing tile formula.Formed thus non-woven fleece 50 can be provided to the paired traction roller 51 in downstream subsequently and further be transported in the ensuing processing step being used for.The representation of special separator that is used to come from doffer 46 non-woven fleece 50 is removed.It refers to some corresponding elements that use on the output unit of carding machine.

The embodiment that goes out shown here is only for finishing a kind of possible version of the present invention.Another version will be described below.

In Fig. 2, each sliver F1 and F2 are provided to the delivery chute M1 of guide member 58 and the location of M2 by roller 54 and 55.Feed roller 60 and 61 is bonded in corresponding delivery chute M1 and the M2.

Guide member 58 provides an air groove 63 that is between delivery chute M1 and the M2, and this groove has an opening 64.This opening 64 about being configured is illustrated, especially amplifies the various possible situation of having represented according to Fig. 3 and Fig. 4.Fig. 4 this opening in a) provides a groove 66 longitudinally, and it extends on the width of guide member 58.According to Fig. 4 b) expression, the hole 67 of having adopted some adjacent arrangements is to be used for air duct.Fig. 4 c) represented another embodiment, it provides the hole 68 of some a greater number that are used for air duct.According to Fig. 4 d) represent, adopt the slot opening 69 of the similar cross of some adjacent arrangements.

Certainly possible more combination and the embodiment of providing, it can be used in application corresponding.

As shown in the figure, air groove 63 is connected with a compressed air source 71 by pipeline 70.On Kong Zui (opening 64 of air groove 63), sliver F1 that 75,76 pairs of each clamping elements are carried downwards and F2 applies clamping effect and form a bite K1 and a K2 on guide member 58.Sliver F1 and the F2 end of guiding downwards are engaged and form a joint free end E1 below opening 63.

Shown in Figure 3, the air flow that begins to come from air groove 63 is guided in sliver F1 and two overlapped ends of F21 as especially, and its overlapped ends forms an engagement end portion E1.The function of this device will be done detailed explanation below.

Also illustrate among Fig. 3, be distributed in additive air nozzle 77 and 78 on the whole width and can be provided on the zone of end of clamping element 75 and 76, its air nozzle is connected with superpressure source 81 by the pipeline 79,80 that schematically illustrates.Described nozzle 77 and 78 is used for producing additional compressed air stream in the direction towards tail end E1, and this air flow can be substantially penetrates into its inboard from the outside of end E1.Described additional compressed air stream has guaranteed that whole end E1 is flowed process fully by air, so that all can not being discharged downwards by air flow by component (staple fibre, dust, cotton knot etc.) fixing behind bite K1 and the K2.Roller 83 provides a rotation hollow body 87, and this rotary body has an opening 89.In the inside of rotary body 87, be provided with a fixing covering 88, this covering has an opening 90.As shown in the figure, the inner space of covering 88 provides negative pressure source 92 by pipeline 93.In case it is overlapping that it has represented that opening 89,90 is in, can be sucked away by the inner space of covering 88 from the isolated material of end E1.Roller 82 is provided as solid roller and can provides rubber covering layer to be used to draw technology.Sliver building mortion 95 is located under the paired roller 85, and its sliver building mortion is made up of a rubber coating roller 99 that rotates suction drums 97 and match with its suction drums.One fixedly covering 98 be placed in the inside of suction drums 97, its inner space is connected with a negative pressure source 102.In the zone of the bite 101 between roller 99 and suction drums 97, covering is provided with some openings 100.These openings that can suck surrounding air are indicated on by in the example shown in the varying cross-section.The cross section of opening 100 is near bite 101 minimums.This just means that be minimum in the suction force on the fiber bundle F P that is removed in this zone, and its suction force of the area part that increases cross section gradually of opening 100 becomes big.This end that just can guarantee the fiber bundle F P that pulls out relies on the excircle of suction drums 97 reliably.This device can make the form stratification of fiber bundle F P with similar room watt, the fibre bundle of its stratification is by this way by providing downwards progressively, the final sliver B that forms, this sliver can be drawn downwards by a pair of roller 104 in downstream so that it is sent in thereafter for example gathering-device (bar tube).

Other part as shown in Figure 3, the combing element 105 that can send to can be located between clamping element 75,76 and the paired roller 85, and this combing element 105 provides two combing elements that can send to 106,107.This combing element 105 can be equivalent to the top comb of carding machine and it begins to engage with free end E1 when described end E1 goes up traction downwards by paired roller 85 when fibre bundle.This also just makes and can suppress and remove during the technology by air flow not component and any impurity of any weak point of separation fully in traction.It is auxiliary that this just means that combing element 105 plays a part a kind of additional separation.

Fig. 5 has represented the sliver building mortion 95 of another possibility, here uses a kind ofly to have the belt conveyor 110 that goes in ring of ventilative perforate to substitute the shaping cylinder.Especially also illustrate at Fig. 6.Belt conveyor 110 is directed by two rollers 112,113, is connected in a drive unit (not being shown specifically) with one of them described roller.The conduit 115 of a upward opening is arranged on belt conveyor 110 inboards of operation, and it links to each other with negative pressure source 117 by pipeline 116.Described conduit 115 is fixed on the zone of belt conveyor, the fibre bundle that is drawn by paired roller 85 in this zone with the form in similar room watt by stratification so that form closely knit sliver B.

According to the expression of Fig. 6, schematically illustrated axis A1 and A2 at this, the axis of roller 85 can also favour lead T location in pairs.It provides an additional effect with respect to fuzzy bonding station.

Below the operator scheme of the embodiment of Fig. 2 to Fig. 6 is done detailed explanation.

The sliver F1 and the F2 (also possible non-woven fleece and the web of providing) that provide by roller 54 and 55 arrive the zone of feeding to groove M1 and M2, and consequently sliver is gripped and further carried by roller 60 and 61.Under the opening of induction element 58, sliver F1, the end of F2 is connected to a single end E1.In case free end E1 has reached a predetermined undue extension elongation under guide member 58, then the supply by roller 54,55 and roller 60 and 61 is interrupted.One mechanical device (not shown) is used for clamping element 75 and 76 directions towards guide member 58 are moved (rotation), and described element forms bite K1, K2 on sliver F1 and F2.After this air pulse that is produced by compressed air source 71 is by the opening 64 of air hole 63, and this air sees through free end E1 and takes out the component (as staple fibre) of any not clamping from end E1.Especially as shown in Figure 3, the air flow that begins to come from air groove 63 is having overlapping areas place, two ends of sliver F1 and F2 to see through end E1.Because alleged " Bernoulli effect ", two components of free end E1 are merged, and the whole fibrous materials that guaranteed end E1 like this are by air penetration.In order further to increase separating effect, additional air pulse can apply by nozzle 77 and 78 on the E1 of end.After the interval of blowing finished, bite K1 and K2 were by this time clamping element 75 and 76 and released of contracting.During air blowing technology, the position shown in roller 83 presents, facing to opening 90 be provided with opening 89 and parting material by negative pressure source 92 through openings and be discharged from.The also possible additional aspirator that provides, this device is not represented at this.As being arranged by a double-head arrow, guide member 58 comprises that roller 54,55 and 60,61 can be towards paired roller 85 and displacement, so that the tip that blows out end E1 arrives the bite between the roller 82 and 83.Also possible is, substitute induction element 58 and move towards paired roller 85, and allow paired roller 85 towards moving meter 58 displacements so that grip the fiber of free end E1.

In case end E1 is maintained on the bite of paired roller 85, combing part as shown in Figure 3 can be sent to.At this moment the opening 89 of hollow body 87 is in the position that faces toward of position as shown in Figure 2.This is used for draft process with regard to the closure shell that means hollow body.In pairs roller 85 at this moment setting in motion and fibre bundle draw from end E1, its end is gripped by the bite of roller 85 in pairs.Described fiber bundle F P is sent to bite 101 places of paired roller 95 downwards, and here the released tail end of fiber bundle F P begins to rely on the suction drums 97, and it supports by some openings 100, and these openings are connected with the negative pressure chamber of covering 98.The front end of fiber bundle F P engages with the previous trailed end that still is on the bite, or with mode and its stratification in similar room watt.

The sliver B of Xing Chenging is drained into downwards on a pair of roller 104 so that further carry by bite 101 like this.

Be replaced into roller 95 and provide go in ring and ventilative belt conveyor 110 to implement embodiment according to Fig. 5 and 6.The end of the fibre bundle that fiber bundle layer on the paired roller 85 is stacked in formerly to be provided is provided downwards and is connected with it with the form in similar room watt.This process applies negative pressure source by conduit 105 and supports, consequently free end and formed sliver or non-woven fleece B are maintained on the surface of belt conveyor 110 with the form of location.

Arrange that on belt conveyor 110 the some fibre selecting arrangement also is possible, its fibrous material of having selected all is provided on the same belt conveyor and with its joint and becomes a kind of connected structure.

Fig. 7 has represented another embodiment, and it provides the structure that is similar to Fig. 2 example.Substitute second fibre bundle of supplying with, it has a guided plate 127, and its end E2 with fibre structure F3 is mutually opposed.

One or several sliver F3 (or lap, non-woven fleece etc.) carries towards the direction of bite K3 by guide member 121 under the effect of free roller 120, and its guide member 121 has a guiding groove M3.Bite K3 is positioned at gradually carefully holding and forming by the clamping element 132 that can regulate setting of guide member 121.The adjustment movement of clamping element 132 is schematically illustrated out by double-head arrow.

Air groove 123 is located at the inside of guide member, and its openend is below bite K3 and the front.Opening can be provided with according to embodiment shown in Figure 4.Air groove links to each other with negative pressure source 125 by circuit 124.

Also possible is as shown in Figure 3, also can provide the additional combing element 105 that can send in this case.

Connect the plate 127 of a movable maintenance below guide member 121, its front end 122 has a flexible structure.One control lever 126 acts on described end, and this control lever is connected in a governor motion that is not shown specifically.This control lever 126 can be used on the dashdotted position shown in moving on to 122.For the purpose of plate 127 levels guiding, an induction element 128 is provided and has a hydraulic cylinder 130 to act on the point that is used for this plate of displacement of connector 129 at the Background Region of plate.Aspirator 134 is set on plate 127, and it is used to remove separated waste material.

But the paired roller 135 of horizontal displacement is by installation adjacent one another are, and it is used to draw the fibre bundle of the end E2 that selects of controlling oneself.

Describe as the embodiment at Fig. 2, sliver building mortion 137 is provided at the downstream of paired roller 135, this fibre forming device comprises a rotating fixedly suction drums 138 and is installed in the covering 139 of suction drums inside that the traction location of this covering in the front of bite 144 provides some openings 140.The inner space of covering 139 links to each other with a negative pressure source 147.

Roller 141 matches with suction drums 138, and this roller can be provided with rubber covering layer.Further carried by paired roller 145 by the sliver that suction drums provided.

Do briefly bright below the function of this device:

Fibrous material F3 is transferred to cylinder 120 by feeding to groove M3 with by feeding of bite K3 zone.Plate 127 linearly and the front position be shown on the impression of amplification.

In case a determined value above bite K3 is set in the end of too much stretching out of free end, then clamping element 32 is held at bite K3 place towards the direction displacement and the fibrous material F3 of guide member 121.Described conveying is interrupted during this period.The front end of plate 127 is displaced to above-mentioned position shown in chain-dotted line by control lever 126, and consequently free end E3 also is carried away by plate 127.Compressed air circulation overcompression air source 125 and air groove 123 is provided and compressed air along advancing on the direction of the aspirator 134 that starts simultaneously.

Consequently air flow is directed along the surface of plate 127, and end E2 (as mentioned above) is introduced on the plate and by air flow and blows over fully.Be pulled away by suction catheter 134 by the staple fibre that extracts on the E2 of end and other component that is removed.Compressed-air actuated supply is interrupted once more and clamping element 132 is raised from guide member 121 once more.

Simultaneously, end 122 forwards to upper/lower positions (chain-dotted line) and by hydraulic cylinder 130 displacement backward by control lever 126.This has just produced enough free spaces, and consequently paired roller 135 subsequently is held and is pulled in the nip points of paired roller 135 up to free end E2 towards the direction displacement of bite K3.Separating technology in this traction technology and the traditional carding machine is more or less the same.In case fibre bundle is drawn from free end E2 by this way, in pairs roller is then towards the direction displacement of downstream sliver building mortion 137.Described fibre bundle (joint technology) is provided in this form with similar room watt on the end of the fibre bundle that is before provided and engages on bite 144.After this sliver B that forms like this arrives paired roller 145 places, and roller 145 is provided to downstream receiving system (bar tube) (not shown) to material.Simultaneously, the end of plate 127 is transported to position that stretch out and forward backward, and then sorting and traction technology subsequently begin again.

Embodiment shown here is only as explaining.Within the scope of the invention other embodiment can also be arranged.

Shown device can be finished the autotelic sorting of fiber and not need to use big mass acceleration and reverse movement and have high operating rate.

Claims (46)

1. One kind be used for the category fiber structure (10, F1, F2) method of fiber, its fibre structure is to be provided to fibre sorting device (30,38,75,76,58,63) on, it is characterized in that (10, F1 F2) is held on transverse to its throughput direction and from bite (K1 fibre structure, K2) free end that stretches out on (E1) is stood the effect of an air flow, this air flow can take out and discharge any component that is not held (staple fibre, cotton knot, dust etc.) from free end.
2. 2. method according to claim 1, it is characterized in that fibre structure (10) is divided into some before at arrival sorter (30) and has filamentary fiber bundle (24), its fibre bundle is stretched in a longitudinal direction and is approximate mutually being arranged in parallel.
3. 3. method according to claim 2 is characterized in that each other continuous thereupon at a certain distance fibre bundle (24) is to be interrupted the taking-up fiber by the free end (E) from fibre structure to form.
4. 4. according to the described method of one of claim 2 to 3, it is characterized in that fibre bundle is held with front end (K) predetermined distance that stands the air flow effect apart from it during separating technology from the throughput direction of fibre bundle (24).
5. 5. according to the described method of one of claim 1 to 3, it is characterized in that from bite (K1 K2) sees, air flow be the guide fiber structure (F1, F2) or the free end (E1) of fibre bundle (24).
6. 6. according to the described method of one of claim 1 to 5, (K1, K2) free end outside (E1) stands the effect of a suction air flow to it is characterized in that stretching out bite.
7. 7. according to the described method of one of claim 1 to 5, (K1, K2) free end outside (E1) stands the effect of compressed air stream to it is characterized in that stretching out bite.
8. 8. one of require described method according to aforesaid right, it is characterized in that after classification technology (K1, the chucking power of K2) locating is released and be transferred to downstream sliver building mortion (95) to be used for the shaping of sliver by classified fibrous material at bite.
9. 9. according to the described method of one of claim 2 to 7, it is characterized in that it is to finish by overlapping of classified fibre bundle (24) that sliver is shaped.
10. 10. method according to claim 1 is characterized in that (F1 F2) is provided on the fibre sorting device at least two fibre structures simultaneously and the effect of a common air flow is stood in the end of fibre structure.
11. 11. method according to claim 10, it is characterized in that fibre structure (F1, end F2) be engaged and air (K1, zone K2) begins to blow between the end of two fibre structures from bite.
12. 12. method according to claim 10, it is characterized in that at least one additional compressed air stream is being created in corresponding bite (K1 on free-ended direction, K2) downstream (blows) also to fibre structure that (F1 is on the outer surface of engagement end portion F2) (E1).
13. 13. one kind be used for fibre structure (10, F1, the sorter of fiber F2), this fibre structure is by feed unit (1,3,54,55,60,61,58) be provided on the fibre sorting device, it is characterized in that providing clamping device (44,75,76), this clamping device is apart from certain this fibre structure (24 of distance clamping of its fiber free end (E1), F1, F2) and provide that (K1 K2) produces the device (33,34 of an air flow to the free end (E1) of fibre structure from bite, 36,38,70,71).
14. 14. device according to claim 13, it is characterized in that providing device (18,5,6) become the independent filamentary fibre bundle (24) that has so that open fibre structure (10), its fibre bundle is being arranged in rows of being stretched in a longitudinal direction and being parallel to each other basically, its fibre structure be provide in progressively mode by feed unit (1) and provide device (3) to be used for that fibre bundle is sent to downstream sorter (30).
15. 15. device according to claim 14, the device that it is characterized in that feed unit to be made of drafter (1) and be used to produce individual fibers bundle (24) is made up of a rotating fixedly roller (5), this roller and form a bite with a rotating fixedly suction drums (3), its suction drums is opposite to the transfer position of drafter (1).
16. 16. device according to claim 15 is characterized in that roller (5) on the subregion of its circumference, keeps belt (6) to center in the zone of bite by a circulation at least.
17. 17. device according to claim 16 is characterized in that the belt (6) adjacent to bite is resting on the circumference of suction drums (3) on the fragment of its part.
18. 18. according to the described device of one of claim 15 to 17, it is characterized in that suction drums (3) provides some bump (18), these bump are to be configured on its circumference with certain spacing.
19. 19., it is characterized in that drafter (1) is a kind of tape drawing mechanism according to the described device of one of claim 15 to 18.
20. 20. according to the described device of one of claim 15 to 19, it is characterized in that setting the separation cylinder (30) of an axially parallel in the rotatable maintenance of suction drums (3), it separates the bothrium (38) that cylinder provides some radial outward faces, the position of bothrium is corresponding to apart from having excircle (SU) minimum range of the suction drums (3) of negative pressure chamber (32), and its negative pressure chamber is fixing is placed in the inside of separating cylinder (30) and links to each other with an aspirator (34).
21. 21. device according to claim 20, it is characterized in that from separating the rotation direction of cylinder (30), some elastic heave parts (44) are located at adjacent to the opening of bothrium (38) on the excircle (AU) that separates cylinder (30), and these bump go up at suction drums (3) and the excircle (SU) that separates the locational suction drums of minimum range between the cylinder (30) and carry out a clamping effect.
22. 22. according to the described device of one of claim 20 to 21, it is characterized in that in order to produce negative pressure setting device (20 on subregion at least in the inside of suction drums (3), 21,22), described subregion at least be meant belt (6) rest on suction drums (3) excircle (SU) the zone with towards the zone between the transport zone that separates cylinder (30) (A).
23. 23., it is characterized in that providing an axially parallel to contact with the excircle that separates cylinder (30) (AU) in this doffer of doffer (46) of the rotatable maintenance that separates cylinder (30) according to the described device of one of claim 20 to 22.
24. 24. device according to claim 23 is characterized in that doffer (46) provides cloth structure (47) on its excircle.
25. 25. device according to claim 13, it is characterized in that fibre sorting device passes through transport (54,55,60,61) provide at least two fibre structure (F1, F2) and the contact element of removable maintenance (75,76) be used for each fibre structure, a described contact element and common induction element (a 58) effect of matching.
26. 26. device according to claim 25, it is characterized in that at least one air nozzle is provided on the guiding device (58), from fibre structure (F1, F2) throughput direction is seen, the opening of its nozzle (64) open downstream and be contact point (K1, K2) between and also link to each other with a compressed air source.
27. 27. according to the described device of one of claim 25 to 26, (M1, M2), the conveying roller (60,61) that is used for transport sinks in guiding groove to it is characterized in that providing some relative guiding grooves by induction element (58).
28. 28., it is characterized in that air nozzle (77,78) is combined one in the zone of clamping element (75,76) and link to each other at the downstream part of its clamping surface and with a compressed air source (81) according to the described device of one of claim 25 to 27.
29. 29. according to the described device of one of claim 24 to 28, a pair of roller (85) that it is characterized in that forming a clamping line is arranged on the downstream of clamping element (75,76).
30. 30. device according to claim 29, at least one roller (82 that it is characterized in that paired roller (85), 83) be set to a bored roll (87), it has some towards outer opening (89), and has the hollow chamber that links to each other with negative pressure source device (92).
31. 31., it is characterized in that sliver building mortion (95) is arranged on the downstream of paired roller (85) according to the described device of one of claim 29 to 30.
32. 32. device according to claim 31 is characterized in that sliver building mortion (95) is formed by suction drums (97) and the traction roller (99) that matches with suction drums.
33. 33. device according to claim 32, the inner space that it is characterized in that suction drums (97) is connected with a negative pressure source (102), and (some) coverings (98) are provided at the inboard of suction drums (97), and it seals this inner space and arrives on the part section in front of the bite (101) between suction drums (97) and the drawing rollers (99) to prevent outside air.
34. 34., it is characterized in that the combing element that can send to (105) is arranged on clamping element (75,769 and in pairs between the roller according to the described device of one of claim 25 to 33.
35. 35., it is characterized in that guiding device (58) keeps movable towards the direction of paired roller (85) according to the described device of one of claim 29 to 34.
36. 36. device according to claim 31 is characterized in that the sliver building mortion is to be made of a circulation belt conveyor (110), it is transverse to the discharge direction setting of roller (85) in pairs.
37. 37. device according to claim 36 is characterized in that belt conveyor (110) has air-vent (111) and is used to produce means for applying negative (115,116,117) to provide at least below conveyor zones on the belt conveyor.
38. 38. device according to claim 13, it is characterized in that providing at least a guiding device (127), it extends along free end of fibre structure (F3), and fibre structure (F3) is provided on the fibre sorting device by the transport (120) that acts on that matches with induction element (121).
39. 39. according to the described device of claim 38, it is characterized in that providing at least one can keep the clamping element that moves, it matches with induction element (121).
40. 40. according to the described device of one of claim 38 to 39, it is characterized in that at least one air nozzle (123) is provided on the induction element (121), its opening is opened the downstream of bite (K3) between the free end of fibre structure (F3) (E2) and guiding device (127) and is connected with compressed air stream (125).
41. 41. according to the described device of one of claim 38 to 40, it is characterized in that guiding device (127) is made of a plate, but it moves on longitudinal direction.
42. 42., it is characterized in that the end (122) in the face of the guiding device (127) of the free end (E2) of fibrous material (F3) is flexible according to the described device of one of claim 38 to 41.
43. 43., it is characterized in that the flexible free end (122) of guiding device (127) is connected with an adjusting device (126) according to the described device of claim 42.
44. 44. according to the described device of one of claim 38 to 43, it is characterized in that aspirator (134) is set at this location of the free end (122) of guiding device (127), its (this zone) is relative with the free end (E2) of fibre structure (F3).
45. 45., it is characterized in that providing a roller (135) in pairs movably in the downstream of bite according to the described device of one of claim 38 to 44.
46. 46., it is characterized in that providing a sliver building mortion (137) in the downstream of paired roller (135) according to the described device of claim 45.

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