Title of Invention	A SPINNING MACHINE
Abstract	A self-threading condenser for disposition within a drafting zone ofa textile machine. The condenser includes a diminishing radii guide profile which directs a fiber stand contacting the guide profile into a fiber strand-carrying notch defined in the condenser. The condenser is allowed to float laterally in response to movements of strand passing through the drafting zone.

Full Text

SPINNING MACHINE WITH A COMPACTING DEVICE The invention relates to a spinning machine according to the preamble of the independent claim., and it is furtner proposed for use in compacting spinning machines according to claim 4. Tnese spir.ninc macnnes either have a drafting arrangement with a special delivery rdier which \s co-rectec :c a suction device or a compacting device operating a: vacuum is zcrr&czez :c a conventional two-stage drafting arrangement comprising three pairs of cyiintiers. Compaction takes place on an air-permeable compacting elemem which is moved forward with the sliver and is exposed to vacuum from inside, the compaction being orough: about oy the suction air flowing transversely towards the sliver. As new fields of application especially of compacting spinning machines are being opened up., there ts a need TO cor.ro! the sliver before compacting on its path througn the drafting arrangement anc if necessary. 10 the compacting device as completely as possible. According to tne invention, a specia guioe is provided for this purpose in the preferential draft of :ne drafting arranaement and/or before reachinc the comoactinc device, which guide allows the draftee fibres to drift aoart less than in conventional drafting arrangements without forcing substantial cnanges in direction on the individua. fiores. in one embodiment, this is acnieved bv a cefiectinc eiement whose surface is a; least coated by a portion of the fibres so that all the fibres of one sliver are defiected in the same way and/or tne same director, "his is preferably achieved by a prismatic deflecting eiement - rod-shaped havinc substantial uniform cross-sections, which is arranged transversely :o the flow direction of tne FAIR stream and is arranged in the longitudinal direction of the drafting cylinder. This guioe eiement can be arranged directly before the sliver is wound or s comoactinc eiement The chanae in direction of the sliver bv the auide eiement is preferably 1.5 to 5C The spinning machine according to the invention in the application in a multi-cylinder drafting arrangement, comprising a: least three pairs of distorting rollers and double aprons on one of the pairs of rollers, wherein for guiding a sliver by means of one of the aprons as close as possible to a delivery cylinder a cage is directed towards a pair of delivery cylinders, which cage has the apron looped around it, characterised by an additional rod-shaped guide either for :he silver or for the apron, which auide is arranged between the apron and the delivery cylinder. The guide can be curved ccncavely towards the delivery cylinder and convexiy towards the sliver. In a second embodiment, the auide can be arranaed between two too rollers towards the apron such that said apron experiences a concave deflection by the guide when seen from outside. The additional guide for the siiver can be arranged in the direction of transport of the sliver in one or after one craning zone and before one compacting zone, especially before the sliver is wound or, a compacting elemen: of the compacting device. The invention is explained in detaii subsequently in various exemplary embodiments with reference to the drawings. In the figures: Ftaure "I and Figure 5 are respectively a cross-section and a side view of a conventional two-stage crafting arrangement in which the guide element is integrated. Figure 2 is a section from Figure showing tne important elements in the vicinity of the g uide element, Figure 2a shows the guide element with the sliver. Figure 3 shows the fixing of the guide-on- elements of the drafting arrangement Figure 4 is another exemplary embodiment for a drafting arrangement with a compacting device, the latter being positioned after the drafting arrangement. Figure 6 is a guide element or. ar apron which. makes it possible to achieve a longer guidance of the silver through the apron. Figure 7 shows various possibilities for fixinc tne quide. Tne spinning machine is fitted with a compacting device ' which is connected to a drafting arrangement 1a of the spinning machine and is characterised by an additional guide 34 for the sfiver which is arranged in the direction of transport of the siiver after a drafting zone 4, 5 and before a compacting zone, especially before the sliver 11 is wound on a compacting element 19 of the compacting device. Said machine can be further characterised in that the guide 34 is arranged in the main drafting zone of a multi-stage drafting arrangement before the delivery cylinder 2. tnat the auide element 34 of the auide is a onsmatic rod arranaed in the longitudinal direction of the drafting cyiince". having a cross-section rounded on the functional side-that the guide element 34 is a;ranged so that it is passed through a connecting iine or tangent tc a gripping gap 23 between a delivery cylinder 2 and a top roller 2' pressed against said cylinder and the delivery gripping point between a top apron 5 and bottom apron 4 o* the drafting arrangement 1a, that the sliver 11 or apron 5 is deflected by a few degrees, especially 1.5...6°, that the guide sits directly in front of the gripping gap 23 between the delivery cylinder 2 and a third top rciier 2' of the drafting arrangement pressed against said cylinder that if necessary, the deliver/ cylinder 2 of the draftinc arranaement 12 is embodied as a compacting siement 19 of a compacting device 1 with an air-permeable cylindrical surface. that aerodynamic effects car: be triggered on the sliver 11 in a compaction zone 13 by a vacuum system 15 that the guide element 34 is affixed by means of retaining elements 340 to retaining parts for aprons, especially a cage 30 for an apron 4. 5 of the drafting arrangement 1a, that leaf springs are attachec at the ends of a guide element 34, with a snap connection at the ends of a caae 30 for an aoron 5 of the draftinc arranaement la, that a guide 34 for s sliver 11 sits on one edge of the cage 30 at a spacer 32 with a deflecting element 33 on one edge of s cage 30 for a :op apron 5 of the drafting arranaement la. that a guide 34 is provided before the delivery cylinder 2 of the drafting arrangement 1a and a further guide 34' is provided after the delivery cylinder 2 and before a compacting device 1 with a compacting element 19, considered in each case in the direction of transport of s silver 11 through the drafting arrangement 1a, wherein the afore-mentioned features can be applied singly or cumulatively The drafting arrangement la comprising the compacting device 1 as shown in Figure 1 transports a sliver 11 oyer a feed cylinder 42 with a first top roller 42' pressed against said cylinder through a preliminary drafting zone to a middle cylinder 3 with a second top roller 3'. The middle cylinder 3 has a bottom apron 4 looped around it, whichr driver by the middle cylinder, passes ever a bridge 40. The top roller 3' with a top apron 5 and a cage 30 is pressed against the bottom apron 4 oy means of a loading device 10 as shown in Figure 4. The top apron 5 is dnven in contact with said bottom apron 3 by saic bottom apron, wherein the fibres of the sliver 11 brought from the preliminary drafting zone between the feed cylinder 42 and middle cylinder 3 are retained in the main drafting zone against the tension of the delivery cylinder 2. In this exemplary embodiment the delivery cylinder 2 is embodied as a compacting element 19, I.e. as a perforated drum with internal suction. The top apron 5 on the one hand loops around the second top roller 3\ and on the other hand around a spacer 32 which sits on the cage 30. A guide element 34 is arranged between the delivery position of the sliver 1 1 from the bottom apron 4 or top apron 3 and the delivery cylinder 2 with the third top roller 2\ which slightly deflects the sliver 11 as shown in Figure 1 whereby taut guidance of the fibres of the sliver 11 is achieved and in particular shorter fibres are preventec from becoming detached from the sliver A round bar especially having a diameter between 3 and 6 mm is preferably used as the guide element 34. The guide element 3-is arranged as close as possible to the surface of the delivery cylinder 2 or the compacting element 19. with a distance of less than 1 mm. After being deflected by the guide element 34 by a few degrees, the sliver is wound onto the surface of the compacting element 1S: the looping path between the gripping position of the third top roller 2 and the fourth top roller T lying en the compacting element 19. A screen 19' over the compacting element 19 ensures that the incoming suction air is guided as parallel as possible io the axis of the delivery cylinder 2. The sliver is then preferably twisted by means of a ring spinning device 40 and wound onto a yam bobbin. Figures 2 and 2a show enlarged sections of the device in the vicinity of the guide 34 where the sliver 11 is deflected by the angle a = 1.5...6°. Yarns can be spun in counts of Ne 3 to 100, preferably 3...50,.especially 3 to 30 with preferably a single adjustment of the guide element of the guide 34. The feed can consist of all known spinnabie fibre materials, also having a short-fibre ~rac:ion, especially carded cotton, also MMF, PES and blends. Good yam qualities are achieved thanks to The guide 34. The reference numbers In Figures 2 and 2a are similar tc those in Figure 1. Figure 3 shows two embodiments for fixing the guide 34 in the drafting arrangement. The cage 30 for guiding the top apron 5 is mounted fixedly but pivotally with the second top roller 3' on the afore-mentioned loading device 10. In the first exemplary embodiment of the guide element of the guide 34, this extends over the entire length of a section of the cage 30 in Figure 3. The ends of the guide element 34 are held by retaining elements 340, 340'. The retaining elements 34G are attached fixedly at the ends of the cage 30, for example, using fixing elements 342 in the form of pins or screws. The retaining elements 340 can be made of spring steel, as leaf springs for example. They can be snapped by means of fixing oins 342 laterally into holes in the ends of the cage when the fixing elements 342 are aligned. According tc a second exemplar/ embodiment of the guide 34 in the right-hand part of Figure 3, a comparatively short guide element 34 is positioned on the right longitudinal edge of the cage 30 at a spacer 32 by means of two retaining elements 340, 3401 having gliders 342 at their ends. The gliders 342 in this case sit directly next to the gliders 320 of the spacer 32, The spacer is used tc guide the top apron 5: this being-deflected by the deflecting etemern 33 between the gliders 320. The gliders 342 can be executed like the gliders 32C of the spacer, shown in perspective view, with a larger distance between the gliders 342 than between the gliders 320. A retaining element 340 sits with the glider 342 next TO the spacer 32 on the cage 30 as shown in Figure 3. Next to the cage 30, the spacer 32 is shown in perspective view and the short guide element 34 with-the retaining elements 340 is shown in perspective/schematic view. As has already been mentioned, the guide element of the guide 34 is a preferably circular-cylindrical prismatic element. The guide 34 can also be affixed directly on the deflecting element 33. cylinders 2, 2' and the delivery-sice gripping point of the pair of aprons 4, 5 passes partly through the guide element 34. The surface condition of the deflection or guidance shouid be selected according to the desired effect or raw materia!. The deflection can be mounted fixedly or rotatabiy. The guide element 34 can also be affixed to the deflecting bridge 40. As shown in Fig. 5, the guice 34 can be curved concavely towards the delivery cylinder 2, 2' and convexly towards the sliver 11. As shown in Fig. 6, the guide 34 can be arranged between two top rollers 2\ 3' with respect to the apron 5 so that this undergoes a concave deflection by the guide 34 when viewed from outside. It is thereby possible to bring the apron closer to the top roller T whereby the sliver 11 is guided if not additionally, thus over a longer section. According to Figs. 2 and 4. the additional guide 34 for the sliver is arranged in the direction of transport of the silver in or after a drafting zone 4. 5 and before a compacting zone, especially before the sliver 11 is wound on the compacting element 19 of the compacting device. According to rig. 7, the guide 34 can be affixed on axles of top rollers 2', 2 using retaining elements 340a and 340c or on a loading arm 344. CLAIMS 1. A spinning machine comprising a multi-cylinder drafting arrangement (1a) comprising at (east three pairs of distorting rollers (2, 2, 2, 2') and double aprons (4: 5) on one of the pairs of rollers (3, 3l), wherein for guiding a sliver (11) by means of one of the aprons (5) as close as possible to a delivery cylinder (2') a cage (30) is directed towards a pair of delivery cylinders (2, 2'), which cage (30) has the apron (5) looped around it, characterised by an addftional rod-shaped guide (34) either for the sliver (11) or for the apron, which guide is arranged between the apron (5) and the delivery cylinder (2, 2). 2. The spinning machine according to claim 1, characterised by a guide (34) which is concavely curved towards the delivery cylinder (2. 2') and convexly curved towards the sliver (11). 2. The spinning machine according to claim 1, characterised by a guide (34) which is arranged between two top rollers (2, 3') with respect to the apron (5) such that said apron undergoes a concave deflection by the guide (34) when viewed from outside. 4. The spinning machine with compacting device (1) especially according to claim 1; which is connected to a drafting arrangement (1a) of the spinning machine, characterised by an additional guide (34) for the sliver, which is arranged in the direction of transport of the silver in or after a drafting zone (4, 5) and before a compacting zone, especially oefore the sliver (11) is wound on a compacting element (19) of the compacting device. 5, The machine according to any one of the preceding claims, characterised in that the guide (34) is arranged in the main drafting zone of a multi-stage drafting arrangement before the delivery cylinder (2). 6. The machine according to any one of the preceding claims, characterised in that the guide element of the guide (34) is a prismatic rod arranged in the longitudinal direction of the drafting cylinders, 7. The machine according to any one of the preceding claims, characterised in that the guide element (34) is arranged so that it is passed through a connecting fine or tangent to a gripping gap (23) between a delivery cylinder (2) and a top roller (2') pressed against said cylinder and the delivery gripping point between a bottom apron (5) and a top apron (4) of the drafting arrangement (1a). 3. The machine according to any one of the preceding claims, characterised by an arrangement of the guide (34) for the sliver such that this is deflected by a few degrees, especially (1.5...6°). 9. The machine according to any one.of the preceding claims, characterised in that the guide sits directly in front of the gripping gap (23) between the delivery cylinder (2) and a third upper roller (2') of the drafting arrangement pressed against said cylinder. 10. The spinning machine according to any one of the preceding claims, characterised in that the delivery cylinder (2) of the drafting arrangement (1a) is embodied as a compacting element (19) of a compacting device (1) with an air-permeable cylindrical surface. 11. The machine according to any one of the preceding claims, characterised by a vacuum system (15) by which means aerodynamic effects can be triggered on -the sliver (11) in a compaction zone (13). 12. The machine according to any one of the preceding claims, characterised in that the guide element (34) is affixed by means of retaining elements (340) to retaining parts for aprons, especially a cage (30) for an apron (4, 5) of the drafting arrangement (1a). 13. The machine according to any one of the preceding claims, characterised by leaf springs at the ends of a guide element (34), with a snap connection at the ends of a cage (30) for an apron (5) of the drafting arrangement (1a). 14. The machine according to any one of the preceding claims, characterised in that a guide (34) for a sliver (11) sits on one edge of the cage (30) at a spacer (32) with a deflecting element (33) on one edge of a cage (30) for a top apron (5) of the drafting arrangement (1a). 15. The machine according to any one of the preceding claims, characterised by a guide (34) before the delivery cylinder (2) of the drafting arrangement (1a) and a further guide (34') after the delivery cylinder (2) and before a compacting device (1) with a compacting element (19), considered in each case in the direction of transport of a sliver (11) through the drafting arrangement (1a).

Documents:

889-chenp-2005-abstract.pdf

889-chenp-2005-claims.pdf

889-chenp-2005-correspondnece-others.pdf

889-chenp-2005-correspondnece-po.pdf

889-chenp-2005-description(complete).pdf

889-chenp-2005-drawings.pdf

889-chenp-2005-form 1.pdf

889-chenp-2005-form 18.pdf

889-chenp-2005-form 3.pdf

889-chenp-2005-form 5.pdf

889-chenp-2005-pct.pdf