EP0365856B1 - Querbandanordnung am Ausgang einer Karde - Google Patents

Querbandanordnung am Ausgang einer Karde Download PDF

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Publication number
EP0365856B1
EP0365856B1 EP89117861A EP89117861A EP0365856B1 EP 0365856 B1 EP0365856 B1 EP 0365856B1 EP 89117861 A EP89117861 A EP 89117861A EP 89117861 A EP89117861 A EP 89117861A EP 0365856 B1 EP0365856 B1 EP 0365856B1
Authority
EP
European Patent Office
Prior art keywords
transverse conveyor
roller
arrangement according
guide device
deflection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89117861A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0365856A1 (de
Inventor
Daniel Erni
Paul Stäheli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0365856A1 publication Critical patent/EP0365856A1/de
Application granted granted Critical
Publication of EP0365856B1 publication Critical patent/EP0365856B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers

Definitions

  • the present invention relates to a cross belt arrangement at the exit of a card, in which the fiber web emerging from a clamping point formed between at least two rotatable carding output rollers is deposited on the upper run of a cross belt lying at least substantially below these card output rollers, which is located in the axial direction of these rollers between the axial ends this carding idler rollers arranged adjacent deflection rollers runs and the fiber web leads to the one axial end of these carding idler rollers, where it is guided downward by means of a guide device arranged around an axis arranged transversely to the carding idler roller axes and to the transverse belt or several such axles.
  • a cross belt arrangement of this type is known from CH-A-503 810, but with the exception of the guide device mentioned, which was, however, implemented in a card of this type manufactured and marketed by Rieter AG.
  • the guide device is formed by a roller which is arranged next to the associated deflection roller, in such a way that a vertical line connecting the axes of rotation of the deflection roller and the roller runs horizontally. Furthermore, the cylindrical surfaces of the rotatable rollers forming the nip extend horizontally beyond the roller until they are narrowed like a bottle neck for reasons of drive technology.
  • the object of the present invention is to ensure an increase in the strength of the carding nonwoven with a simultaneous reduction in the tendency to form loops, so that higher fleece take-off speeds can be used.
  • the card feed rollers arranged above the cross belt each have a sudden narrowing at their ends assigned to the guide device in front of the deflection point of the cross belt, in which the guide device is partially accommodated, and that a clamping point or a clamping area is formed between the guide device and the adjacent deflection roller of the cross belt and is arranged laterally from and at least predominantly above an imaginary plane running parallel to the horizontal, in which the axis of rotation of this deflection roller lies.
  • the inclusion of a part of the guide device in the abrupt narrowing of the carding outfeed rolls first of all inhibits the tendency of the carded nonwoven transported on the cross belt to overshoot the deflection roller assigned to the guide device or to form a loop, thereby loosening the carding nonwoven as a result of the overshooting. which also means a reduction in the strength of the card fleece is counteracted.
  • the arrangement of the clamping point or the clamping area in the area between 12 p.m. and 3 a.m. of the deflection roller leads to an arrangement in which the guide device can better counteract the centrifugal forces which arise when the strip is deflected and which also lead to a reduction in the strength of the card sliver .
  • the arrangement also enables the distance between the cross belt and the guide device to be reduced in the clamping point or in the clamping area, and pronounced pre-compression takes place during the deflection. This pre-compression also increases the strength of the card sliver and also facilitates the subsequent movement of the card sliver through a collecting funnel. This also reduces the risk of fibers of the card sliver from being spliced off at the funnel and of the funnel becoming blocked, or it is possible to increase the sliver take-off speed beyond the previous limits.
  • the guiding device itself can take various forms. For example, it can be formed by a single deflecting roller, as specified in claim 2. This role is then preferably arranged according to the invention in the angular range specified in claim 3. This training is easy to implement, but still very effective.
  • the guide device can also be formed by a plurality of rollers, each of which is arranged rotatably about its own axis, as defined in claim 4.
  • the rollers can be arranged in an arcuate arrangement, which is adapted to the deflection of the cross belt around the deflection roller and it can according to claim 5, the distances at the nips between the individual rollers and the cross belt, in the direction of movement of the cross belt, increasing be chosen smaller, so that an increasing compression of the fleece is achieved according to the invention.
  • the surface speed of the guide device should be at least as large and preferably greater than that of the cross belt.
  • the guide device is provided with circumferential grooves.
  • This design which can be used in all of the previously mentioned embodiments of the guide device, for example in the form of a roller with circumferential grooves or a circumferential belt with circumferential grooves, enables the air enclosed in the fleece to be rapidly removed, which air is pressed out of the fleece by pre-compression. Because this air can easily escape, an increased strength of the collected carding fleece and the carding tape produced therefrom is achieved. It is also possible to reduce the distance between the guide device and the cross belt in the area of the narrowest clamping point, so that a even higher pre-compression of the carding nonwoven and therefore an even higher strength of the carding tape can be achieved according to the invention.
  • the guide device can be designed according to claims 11 to 13.
  • the embodiment according to claim 14 is also particularly important, since the effort required to drive the guide device can be reduced to a minimum.
  • FIG. 1 shows a reel 11 of a card, which rotates about an axis of rotation 13 in operation in the direction of arrow 12.
  • the drum carries a needle set (not shown) in a known manner, with carded fibers 14 being carried at the tips of the needles and forming a very fine combed fiber pile.
  • To the right of the drum there is the usual pickup 10, which rotates in the direction of arrow 15 of its axis of rotation 16.
  • the customer also carries, in a manner known per se, a needle set (not shown), the needle tips of which take over the fibrous web supplied by the spool 11 and lead to a pile removal roller 17, which can be designed, for example, as a grooved roller and rotates in the direction of arrow 18.
  • the pile take-off roller 17 and the guide roller 19 guide the fibrous web to a nip between two carding outfeed rollers 21 and 22, the carding outfeed roller 21 rotating in the same direction as the pile picking roller 17 and the carding outfeed roller 22 rotating in the same direction as the guide roller 19.
  • Die Carding idler rollers 21, 22 are highly polished rollers with two or three grooves, the surfaces of which extend in a helical manner, with a pitch such that each groove has approximately two total revolutions over the length of the carding idler rollers 21, 22.
  • Both the customer and the pile removal roller 17, the guide roller 19 and the carding spout or clamping rollers 21, 22 extend over the entire width of the reel.
  • the fiber web 23 emerging from the nip of the carding outfeed rolls 21, 22 is deposited on the upper run 24 (FIG. 2) of a cross belt running in the axial direction of the carding outfeed rolls 21, 22, in the direction perpendicular to the plane of the drawing in FIG 1 into this level.
  • the cross belt is guided over two deflecting rollers 25, which are each arranged adjacent to the axial ends of the carding outfeed rollers and rotate around respective axes 26. For the sake of illustration, only one deflection roller 25 and its axis 26 can be seen in FIG. 1.
  • the upper run thus runs in a horizontal direction, but inclined in the transverse direction to the horizontal plane.
  • the fiber web emerging from the nip of the carding outfeed rollers 21, 22 with a total width of approximately 1.25 m is laterally brought together and guided in the form of a so-called carding fleece around the deflection roller at the end of the cross belt 31 so that a fiber band 27 is formed that runs below a curved sheet metal guide 28 and into a measuring funnel 29.
  • the card sliver compressed by the funnel then passes through the known step rollers 30, which can be used, for example, to control the card. From FIG.
  • the cross belt 31 has a shoulder 32, the inner side 33 of which forms an obtuse angle with the outer surface of the cross belt and serves to guide the fibrous web.
  • a cover plate 34 is located behind the shoulder 32.
  • the cross band can also have a second shoulder 35, as shown in FIG. 8.
  • the present invention is particularly concerned with the guidance of the nonwoven fabric around the deflection roller 25 before it is in Form of a card sliver runs around the guide plate 28.
  • this particular guide is not shown in FIG. 1, but can be seen in a first embodiment on a larger scale in FIG. 2.
  • the other carding outfeed roll 22 is located in front of this roll 21, but is not shown in FIG. 2.
  • the two rollers are of identical shape but are driven in different directions, as already explained. 2 runs in the direction of arrow 36 about the axis of rotation 37. As can be clearly seen in FIG.
  • the right end of the discharge roller 21 (as well as the right end of the discharge roller 22) has an abrupt narrowing 38, which in this example represents a circular arc, so that the cylindrical outer surface 39 of the discharge roller 21 over a bottle neck-like constriction merges into a cylindrical drive shaft 41, the diameter of which is approximately one third of the diameter of the cylindrical outer surface 39.
  • the drive shaft 41 continues to the right through a bearing on the card frame and is then coupled to a drive source. For the sake of illustration, neither the storage nor the drive source is shown.
  • Below the carding outfeed roller 21 and behind the cross belt 31 there is a solid plate 42 which belongs to the carding frame.
  • This plate carries the axis for the deflection roller 25 and also serves to support the drive for this deflection roller, of which only the drive disk 43 arranged behind the plate 42 is shown.
  • This drive disk 43 has an axis of rotation 44 and is driven by a suitable drive source for a rotary movement in the direction of arrow 45. This rotary movement is transmitted to the deflection roller 25 via a rotating toothed chain 26 and a further toothed pulley 47. Since the two toothed disks 43, 47 and the toothed chain 46 are arranged behind the plate 42, they can only be seen in broken lines in FIG. 2.
  • the upper run 48 of the toothed chain 46 also runs below a further toothed disc 49, which is also rotatably mounted on and behind the plate 42.
  • the toothed disc 49 also carries a toothed disc 51 which is concentric with it and which drives a guide device in the form of a roller 54 via a further toothed chain 52 and a further toothed disc 53 for a rotational movement in the direction of the arrow 55.
  • the toothed disk 53 and the toothed chain 52 are also arranged behind the plate 42, which is why these parts are also shown in broken lines.
  • the toothed disc 53 is connected to the guide roller 54 via an axis which is rotatably mounted in the plate 42.
  • the guide roller 54 extends across the entire width of the cross belt, i.e.
  • the axis of rotation 57 of the guide roller is arranged in such a way that its surface is partially received in the abrupt narrowing 38 of the carding idler roll 21 and also in the corresponding narrowing of the carding idler roll 22.
  • the clamping point 58 between the surface of the guide roller 54 and the deflection roller 25 or the transverse belt 31 deflected onto this deflection roller comes to lie in an angular position ⁇ of approximately 45 °, measured in the clockwise direction, ie in the circumferential direction 59 of the deflection roller 25 from the Clock position 61.
  • the compressive effect of the guide roller on the nonwoven extends to both Side of the clamping point 58, for example, over an angular range of 30 to 60 °. From the drawing it can also be seen that the extreme right limit of the fibrous web 14 running off the carding output roller 21 comes to a considerable amount D to the left of the deflection point 62 of the cross belt. It can also be seen that the clamping point 58 is to the left of this deflection point 62, so that no pronounced beading occurs in front of the guide roller 54.
  • the guide roller 54 can have a continuous cylindrical outer surface, but is preferably designed as a grooved roller 54.1, as shown in FIG. 5.
  • the guide roller 54.1 has a multiplicity of circular circumferential grooves 63 which enable and facilitate the escape of air from the nonwoven fabric pre-compressed by the roller, so that the card sliver formed after the clamping point 58 already has an increased strength.
  • the guide roller 54.1 is driven via a driven axle, which is clamped in the cylinder region 64 or is connected to the guide roller 54.1 in a form-fitting manner via a tongue and groove arrangement.
  • the cylindrical recesses 65 on the right side of the guide roller 54.1 in Fig. 5 serve to receive their storage.
  • FIG. 6 shows an alternative embodiment of the guide roller as a screen drum 54.2.
  • the air squeezed out by the pre-compression of the nonwoven fabric can escape into the interior through the holes 66 in the screening drum.
  • a perforated sieve ring could also be mounted on a guide roller 54.1 formed in accordance with FIG. 5.
  • FIG. 7 shows a further variant of the guide roller 54.3, namely the guide roller of FIG. 7 is designed as a playpen roller or roller cage. The by pre-compression pressed air can escape through the gaps between the individual bars 67 of the playpen roller.
  • Fig. 3 largely corresponds to Fig. 2, which is why the same reference numerals have been used for the same parts.
  • the guide device here is not formed by a single guide roller, but by three individual rollers 54.5, 54.6 and 54.7, which in this example have the same diameter have, but are driven at different surface speeds, so that the guide roller 54.7 runs faster than the guide roller 54.6, which in turn runs faster than the roller 54.5.
  • the surface speed of the roller 54.5 corresponds essentially to the surface speed of the cross belt 31.
  • the drive arrangement here is such that the toothed chain 46 drives a toothed pulley 71 in the counterclockwise direction, as indicated by the arrow 72.
  • the toothed disk 71 carries a further toothed disk 73 with a somewhat larger diameter and this drives the toothed disk 75 connected to the guide roller 54.7 in a rotationally fixed manner via a further toothed chain 74.
  • This toothed lock washer is designed as a double toothed lock washer and drives a toothed lock washer 77 via a further toothed chain 76, which is non-rotatably connected to the second guide roller 54.6.
  • This toothed lock washer 77 is also designed as a double toothed lock washer and drives a further chain 78, which leads to a rotational movement of yet another toothed lock washer 79, which is non-rotatably coupled to the first guide roller 54.5.
  • the three imaginary axes of rotation 57.5, 57.6 and 57.7 of the three guide rollers 54.5, 54.6 and 54.7 are arranged so that the clamping distance between the guide roller 54.5 and the surface of the cross belt 31 on the deflection roller 25 is greater than the corresponding distance for the guide roller 54.6 and The distance for the guide roller 54.6 is again greater than the clamping distance for the guide roller 54.7.
  • This embodiment is not limited to three guide rollers, for example two or four or even more guide rollers can be provided.
  • the guide rollers can also have different diameters. They can also have grooved or perforated surfaces or they can be designed as running cages.
  • the guide device is not formed by rollers, but by an encircling belt 81 which runs around two deflection rollers 82 and 83.
  • the upper deflection roller 82 is fastened to the plate 42 so as to be rotatable about a fixed stub shaft.
  • the lower deflection roller 83 is rotatably supported and is driven by a toothed disk 84.
  • the toothed disk 84 itself is driven by a toothed chain 85, specifically by a further toothed disk 86 which is coupled in a rotationally fixed manner to a somewhat larger toothed disk 87, the latter toothed disk 87 being driven in the direction of arrow 88 by the toothed chain 42.
  • a toothed chain 85 specifically by a further toothed disk 86 which is coupled in a rotationally fixed manner to a somewhat larger toothed disk 87, the latter toothed disk 87 being driven in the direction of arrow 88 by the toothed chain 42.
  • Toothed washers behind the plate 42 which is why they are drawn with dashed lines.
  • the guide 92 ensures that the strand of the circulating belt 81 facing the deflection roller 25 is guided in such a way that the nonwoven fabric undergoes increasing compression.
  • the precompression is carried out over an angular range of 20 to 80 °, this angular range being dimensioned like the angle in the embodiment according to FIG. 2. It is also possible to arrange this angular range in this way that it extends beyond the 90 ° position. This is also possible in the embodiment according to FIG. 3.
  • adjustable tensioning rollers can be used to hold the tooth chains in place.
  • any other type of drive is also possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP89117861A 1988-10-06 1989-09-27 Querbandanordnung am Ausgang einer Karde Expired - Lifetime EP0365856B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834039A DE3834039A1 (de) 1988-10-06 1988-10-06 Querbandanordnung am ausgang einer karde
DE3834039 1988-10-06

Publications (2)

Publication Number Publication Date
EP0365856A1 EP0365856A1 (de) 1990-05-02
EP0365856B1 true EP0365856B1 (de) 1993-10-20

Family

ID=6364530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117861A Expired - Lifetime EP0365856B1 (de) 1988-10-06 1989-09-27 Querbandanordnung am Ausgang einer Karde

Country Status (7)

Country Link
US (1) US4980952A (ru)
EP (1) EP0365856B1 (ru)
JP (1) JPH02216224A (ru)
CN (1) CN1018737B (ru)
DD (1) DD284912A5 (ru)
DE (2) DE3834039A1 (ru)
RU (1) RU2051218C1 (ru)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL92299A0 (en) * 1989-11-14 1990-07-26 Israel Fiber Inst State Of Isr Process and device for the treatment of cotton
EP0549534A1 (de) * 1991-12-20 1993-06-30 Maschinenfabrik Rieter Ag Karde mit Querband zur Faserflorführung
EP0704562A1 (de) 1994-08-30 1996-04-03 Maschinenfabrik Rieter Ag Gleitführung am Querbandabzug
GB9722279D0 (en) * 1997-10-23 1997-12-17 Carding Spec Canada Method and apparatus for forming a sliver
JP5617930B2 (ja) * 2011-08-03 2014-11-05 三菱レイヨン株式会社 多孔質膜の製造方法および製造装置
DE202012102597U1 (de) * 2012-07-13 2013-10-14 Hi Tech Textile Holding Gmbh Vliesleger
CH714818A1 (de) * 2018-03-21 2019-09-30 Rieter Ag Maschf Bandbildungseinheit für eine Karde.

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304583A (en) * 1963-11-05 1967-02-21 Maremont Corp Web condenser and calender
US3345700A (en) * 1965-03-22 1967-10-10 Johnson & Johnson Apparatus for producing slivers
GB1155598A (en) * 1965-07-22 1969-06-18 Tmm Ltd Improvements in web condensing arrangements on textile carding machines
GB1208264A (en) * 1966-10-13 1970-10-14 Tmm Research Ltd A method of forming sliver from textile fibres and machines for this purpose
CH516659A (de) * 1969-12-12 1971-12-15 Rieter Ag Maschf Verfahren zur Bildung eines Faserbandes aus einem in einer Karde erzeugten Faservlies
DE2109955C2 (de) * 1970-03-04 1982-07-01 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vliesabnahmevorrichtung
GB1358990A (en) * 1970-09-30 1974-07-03 Platt International Ltd Apparatus for forming a sliver of textile fibres
GB1337165A (en) * 1971-10-21 1973-11-14 Platt International Ltd Sliver forming arrangements
DE2758336C2 (de) * 1977-12-27 1987-02-05 Rieter Deutschland Gmbh, 7410 Reutlingen Florabnahmevorrichtung am Abnehmer einer Karde
DD145285A1 (de) * 1979-08-07 1980-12-03 Manfred Schneider Vorrichtung zur umformung eines faservliesverbandes zu einem faserband
IT1140267B (it) * 1981-11-05 1986-09-24 Marzoli & C Spa Dispositivo di condensazione del velo di fibre prelevato da una macchina cardatrice o simile
DE3536333A1 (de) * 1985-10-11 1987-04-23 Schubert & Salzer Maschinen Vliesabnahmevorrichtung
DE3710407A1 (de) * 1987-03-28 1988-10-13 Hollingsworth Gmbh Vorrichtung zum verfestigen eines textilvlieses u. dgl.
JPS6475823A (en) * 1987-09-17 1989-03-22 Sanyo Electric Co Ceiling-embedded type air conditioner

Also Published As

Publication number Publication date
CN1018737B (zh) 1992-10-21
DD284912A5 (de) 1990-11-28
RU2051218C1 (ru) 1995-12-27
EP0365856A1 (de) 1990-05-02
JPH02216224A (ja) 1990-08-29
CN1041792A (zh) 1990-05-02
DE3834039A1 (de) 1990-04-12
US4980952A (en) 1991-01-01
DE58905968D1 (de) 1993-11-25

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