DE1435697A1 - Continuous spinning machine for wet spinning of artificial threads, in particular of viscose artificial silk threads - Google Patents

Description

FAXE IT 1f

3TUI) I E BH3VSTTI ΑΡΡΙΙΟΑΖΙ01ΓΙ ΐϋ J SIItI S.r.l. Via Tolentino, 5 - Milan, Italy

concerning

Continuous spinning machine for the wet spinning of artificial ones threads, especially viscose rayon threads.

The invention relates to a continuous spinning machine for pinning artificial threads, especially cellulose threads and especially viscose rayon threads, There are known, for example, from Italian Patent No. 516,501 continuous spinning machines in which the Threads (under "thread" here is the entirety of the elementary threads emerging from a spinneret) from one Squeezed spinneret, coagulated in a spinning bath and then be withdrawn from a collecting and feeding device, which is suitable for treating a large number of threads at the same time. As an exemplary embodiment, a continuous spinning machine is described in the cited patent, which is the same treated four threads early. This spinning machine was then improved in many ways.

The invention relates to a continuous spinning machine _t comprising a collection and feeding device which is preferably able to handle more simultaneously as a thread, for example there is this device comprises a treatment roller and a plurality of slant in particular four, at a distance to the Behandlungewalze following feed rollers, but it is understood that any other collecting and feeding device can be used in the practice of the invention, which is preferably capable of moving several threads at the same time,

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The object of the invention is to enable the spinning of viscose silk threads with practically complete elimination of toxic vapors, which are known to represent a serious problem in this spinning process. If one wants to maintain the necessary level of protection of workers from damage to health ₉ then one is forced to work with appropriately closed spinning machines as a result of the said toxic fumes, but this measure makes the machine accessible and its maintenance worth seeing . Since, on the other hand, one would still have to gain access to the spinning devices from time to time, it is not possible in this way either to eliminate the harmful deposits. enables ¹ . The inventive spinning machine is substantially identified in that beijhr in combination with each of the spinneret and the associated means for supplying the viscous spinning solution a substantially vertical line or pipe, in which or to which the squeezed filaments are drawn through the bath down a second essentially horizontal discharge line or pipe, aie ^ or. which is essentially perpendicular to the first, means for draining the bath at the outlet end of the horizontal discharge line or the horizontal pipe and a sanitary and feed device for drawing off the thread separated from the bath upwards from the horizontal line or the horizontal tube are provided, the barrel and feed device preferably having a plurality of spinnerets and thus a plurality of essentially vertical

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and allocated in essentially horizontal suction pipes let. The thread is τοη the Saamel and Yorschubrorrichtung preferably by a vertical «line or. RohretOok bent, in which part of the bath carried along by the tob thread drips off and is drained off together with the main part of the bath. The Torrlohtung is further characterized in that at the points at which the thread changes from a vertical to a horizontal running direction and vice versa, means gate is seen are in order to exert localized friction on the thread and so as to localize a substantial part of the extension at these points, which the thread partly due to the through the bath Terureachten entrainment «partly due to the through the collection and prepayment gate will suffer deductions The invention is explained below on the basis of an exemplary embodiment explained in more detail with reference to the drawing, fig ·! let a schematic vertical section through a unit of the spinning machine according to the invention » fig »2 let a sehematisohe section view τοη above after the

horizontal line 2-2 of Pig. 1, with the discharge and guide tubes of the flden, the τοη one and the same and torso lift flg.3 let a sehematleohe incision not after the perpendicular Line 3-3 of Fig. 1 in the direction of the arrow ·, whereby the one and the same Samuel and gate push gate direction are also clearly arranged trigger and guide tubes are visible, and the Figs. 4 and 5 show two details on a larger scale in Fig. 1 the divided device,

Under a "detail" of the spinning machine is a collection and feed device with all organs assigned to it are

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© Θ ^ © si @ h »das» ii @ Spianaasdhine in. Their iaduatriöllssi Awofütauag @ la #! © krse ^ l § @ leher units paral-IeI npfagst _e . ■ ■ '

§ © mä®, s <t @ ® is ^ ipst © !! "! ©» Example b®st @ Mt a «unit on the roll« = and Y®rs @! Iufev © 2 * rieli1mng ₉ vi © r spinnerets and the _v these Spian & üesa associated line © *! fesw ₀ drilling "As the B £ are said in @ ΐ £ ΜΓ industrialists SpimnEaseMn © a @ hrere such units PAE ^ allcsl ^ sägeordn @ t ₉ d © eli ® © i säfac" half a load

aehr®ibung mater the simple! «griff" Spinn * sois d @ n © rllmtert® !! f®ll @ si susipmengesetete unit Yes'staadaiie · '■ As ame. S @ f Eelehaimf h @ rrorgeht ₉ 1st with 10 a spinning puape denotes ₀ oil® duareh which Lsitimg 11 a spinning nozzle · »12 feeds .. Bi @@ e SpismdÜs © is immersed in ®ia K © a ^ ulati © nsfead in a tub 13 8 w © l @ 3i @ by a suitable« not The carrier shown here ι d @ f * d @ n free flow of the bath is not obstructed »in the SfewOnschtesi Lag®. Bas EoagulatlonSBaA flows into the vertical exhaust pipe H and includes the thread» ie the bundle of Blementarfiden squeezed out of the spinneret · The thread and bath then pass from the vertical pipe 14 through a coupling knee 15, shown in detail in a larger picture, into the horizontal outlet pipe 16 ”

At the end of the horizontal exhaust pipe 16 there is a coupling fcnie 17 »which through an outlet 18 leads into a collecting pipe 19 (see individual illustration in Fig. 5), where the separation of the Thread on the one hand and on the other hand of the coagulation bath »the gases and vapors, which in the conversion between the viscose and the spinning bath for β jjwer the is carried out. The coagulation bath

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flows through the outlet 18 into the Saramel pipe 19 »during the Thread guided upwards in a guide tube 20 and through the, insfceeamt with 21 designated collecting and feeding device is withdrawn, which device is a treatment roller 22 and four feed rollers 23 comprises.

As can be seen from fig * 4 EU, the thread and the bath step « as well as the gas and vapors emanating from the vertical exhaust pipe 14 come out of this and pass through a nozzle 24, which can also be made in one piece with the pipe 14 could, but because of easier assembly and maintenance as well as out for the reason that it is desirable that they come from another Material than the pipe is made, better forms a separate component »The nozzle 24» whose lower end is conical is tapered, rests on a sealing ring 25, which in turn on a shoulder 26 of a coupling generally designated 27 rests.

The sealing ring 25 prevents the bath liquid from entering between the nozzle 24 or the pipe 14 and the coupling 27. The coupling 27 is designed as a knee and on its upper part, into which the pipe 14 penetrates, has a seal 28 and a union nut 29 provided for sealing.

In the lower part, the coupling 27 ends with a short horizontal piece 30, into which the bath flows in order to drain from there into the horizontal exhaust pipe 16. At this point, too, the seal between the coupling and the pipe is by means of a seal 31 and a union nut 32 ensured. The coupling 27 is made of lead and the tubes 14 and 16 are preferably made of glass or plastic, for example polyvinyl chloride or any other suitable material.

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posed.

The nozzle 24, however, stands there as a precaution. Made of a very resistant material with a hardness of 7 9 50 or mine in the scale of U®hm w & ä with a low ReürangskoeffisientiiiJ. (voraugew @ i @ © at 0 »20-0 _s 2§), Suitable materials © for this purpose are, for example, Karfcorundui, Zirkoniuatitanatj synthetic ceramic materials with a high aluminum oxide content and others. The Fig. JJ shows the transition point of the? A & ®ns from the horizontal exhaust pipe 16 in a vertical line through which it comes from the bath to the collection and precautionary supply 21 * The pipe 16 penetrates a, Coupling 33, preferably made of Bl®i, a "where at the entry point the seal is also secured by a seal 54 and a union nut 35 -secured-is ₀ Aa End © of the tube 16 a Bus® 3β is attached, which both what ai @ The shape as well as the material of the Mse 24 corresponds to ·. The nozzle 56 is arranged such that ₉ "check ihr® AuetrittsSffnung -annShernd located in the axis eines.Rohrs.ttiokes 57 which can be listened of the clutch 33 further, the clutch 33 is connected to a downwardly curved drainpipe 18 or from a Piece produced that opens into the Sananel tube 19.

This collecting pipe 19 is preferably used not only for one unit of the spinning machine but for all of the parallel units Units of the same. Ss is of course with an indulgence on the volume baw. at any suitable location on the Drawing is not shown and through which the bath is drained in order to be recycled and reused if necessary. This closed drain (preferably

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■ with hydraulic lock) is preferably kept under a slight negative pressure, for example 10 at the water column, in that a suction device is rorgeeehen »gives way to the gas · and Sucks off vapors that can be recovered with have a sufficient concentration to recover to make it profitable.

The mode of operation of the spinning machine described is as follows The element filaments pressed out in a very plastic state are drawn off through the is Bohr bath 14 and in this The stretching already begins · Beia exit the X sleeve 24, us into the pipe β piece 30 and into the horizontal suction pipe su, the load is deflected at a right angle and brushes aa band of the outlet opening of the nozzle 24 · Due to its hardening properties and its coefficient of friction, the nozzle is able to last for a very long time (more than a Year) to endure the friction of the thread. In any case, it causes this limited friction causes stretching of the thread.

The drill bit 30 and in the suction tube IS see the thread moves further in the same direction as the bath flow, the bath according to iss HBhsnuntersohiedes between the spinning tub 13 and the Sanuatlabflues 19 drained. Xn this journey, however, is making itself the pull-off effect of the Samuel and feed device is also noticeable. The closer to the speed at which it is driven and the speed at which the bath drains, can still have a deduction effect in the horizontal flue pipe 16 of the bath, or the thread may move faster than the bath. In both cases the stretching is continued in this section, albeit in a more limited sense

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• then "the thread moves smoothly" at the same speed as the "bath" when it exits the nozzle 91. so there «the same as when leaving the Dttse 24» d «a, There is locally limited friction and there is a tendency to treble, since the thread at the edge of the exit opening of the nozzle 36 grazes.

From this point on, the thread is sucked up by the jamming and feeding device 21 and passes through the vertical tube 20, from which it exits through a nozzle 38 "which is designed analogously to the bosoms 24 and 36" and passes through a thread guide 39 of the threads eohlieesuch to the collecting and feeding device 21, while the entrained bath drips off and passes through the drain 18 into the collecting pipe 19 , which are required in this manufacturing process and which, since they do not belong to your invention, do not need to be described in more detail do not leak out and the air re-see · This is also prevented by the fact that the bath effluent ie Samuel · pipe 19 as I said under le There is ichtem negative pressure, whereby the air is sucked out of the pipe 20 from top to bottom and a gas outlet is made impossible at the top. The only free liquid level in the entire device is therefore that of the fresh spinning bath in the warmth 13. This tub can be closed for two meters, but it should be noted that the toxic gases are already flowing off in the

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dtn BAd and in unaitttlbartr NMh · dtr upper opening dee Tubes · 14 »» owi «ia tube U ■« Ibat develop, βο that thee · aaee and Dtapfe duroh there · bath is carried downwards will. In the zone of the first contact of the viscose with the The spinning bath is constantly renewed and there is therefore no development of toxic gases and vapors in the room The tapered movement of the bath, the coagulation of the thread and us The thread is separated from the bath in closed lines. In this way, as I said, the development of γόη vapors from the bath is completely eliminated and, at the same time, the thread is completely coagulated over its length Away together with the bathroom as well as effective and controlled Stretching of the thread through the interaction of this path of the thread in the flow direction of the bath and the zones locally limited friction at the exit from the nozzles 24 and 36 is achieved. The tension and thus the scattering of the thread changes with it the flow speed of the spinning bath in relation to the speed of the thread and can thus be precisely adjusted by adjusting the diameter of the outlet opening of the nozzles 24 and 36 depending on the total titer of the thread, on the titer of the Filaments and the speed at which the collecting and feeding device is driven, is changed. The device is extremely economical and has a easy maintenance. The only parts subject to wear are the nozzles 24 and 36 and, to a lesser extent, the nozzle 38 and the thread guides, apart from the fact that they file made of suitable material, "they can from time to time to be rotated a little at time, so that the thread always comes into contact with other zones of the outlet openings, as a result of which the service life is very extended.

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Claims (13)

ΙΙΪΪΪ.ΪΑΗΡ KtC HS 1) Continuous · Spinning machine for wet spinning of artificial Threads, especially from cellulose, selenium and especially from Viakoeekunstseidefftden, characterized in that »ie in combination with each spinneret (12) and with the associated means (10,11) for supplying the viscous spinning solution to the same » a substantially perpendicular discharge line (H) ι in the the squeezed out blement threads pulled down through the bathroom a second »essentially horizontal discharge line (16) which is essentially perpendicular to the first, Means (18) for draining the bath at the outlet end of the horizontal discharge line (16) and a collecting and advancing device (21) to withdraw the thread that has been trimmed from the bath upwards out of the includes horizontal line (i6). , 2) Spinning machine according to claim 1, characterized in that the collecting and feeding device unit (21) of a plurality of Spinnerets (12) and thus a plurality of substantially IAtrecht and horizontal exhaust pipes (14 · »16) is assigned. 3) Spinning machine according to claim 1, characterized in that the thread from the collecting and feeding device (21) through a vertical pipe piece (20) is withdrawn v / ird, in which the Pa-. dripping away the entrained part of the bath to be susamBien with the Main part of the bath to be drained. 4) Spinning machine according to. Claim 1, characterized in "that on the steep »on those of the iaden from a vertical gauge * direction into a horizontal sighting and vice versa? -is * -ro- ■ -;
909846/1018 AA Medium (24.56) Torgeeehen Bind to a localized Exercise friction on the thread at these points in an essential part of the teretreolvation de · faden · localized Is «which he partly caused due to the duration of the bath Take away, partly according to dee through the collection and gate " schubTorrlehtung (? 1) deduction exercised 5) spinning machine according to one or more of claims 1-4, characterized in that a unit thereof has a single jamming and advancing device (21) and binding of the animal Spinnerets (12) and pipes and lines connected to them (14,16,20) includes () Spinning machine according to one or more of claims 1-5 » characterized in that at the lower 7; ends of the essentially A nozzle (24) made of a material that is resistant to friction is attached to the vertical drainage and exhaust pipe (14) whose exit edge is the thread at the Ueberg & ng tone: the perpendicular grazes on the horizontal direction of movement. 7) Spinning machine according to one or more of claims 1-6, characterized in that the find the horizontal exhaust pipe (16) has a nozzle (56) made of friction-resistant material is attached, at the exit edge of which the thread at the transition tone from the horizontal to the vertical Direction of movement at maturity 8) Spinning machine according to claims 6 and 7 »characterized in that the nozzle (24 or 36) is made aue a material whose hardness according to the scale τοη Mohs 7.5 or is more and has a low coefficient of friction, Often at 0.20-0.25 owns " «Ad 909846 / 1C18 ^ 9) spinning machine according to claim 8, characterized. marked » the »die DU ·· (24 or, 36} au« carborundum, zirconium titanate or from synthetic ceramic materials with high content is made of aluminum oxide 10) Spinning machine according to one or more of claims 1-9 » characterized in that at the transition from the perpendicular Downward direction of movement of the thread to its horizontal direction of movement a knee (15), roreugsweiee made of lead or a, Another chemically resistant material is arranged, into which the vertical exhaust pipe (H) penetrates, the nozzle (24) attached to the end of the same is arranged and the horizontal exhaust pipe (16) penetrates, with between the two pipes (14,16) and the Knee (15) seals (2Θ-29, 31-32) rorge- ' are seen. 11) Spinning machine according to one or more of claims 1-10, characterized in that at the transition from the horizontal to the vertical upward movement of the thread one knee (17) is arranged preferably made of lead or another chemically resistant material, into which the horizontal exhaust pipe (16) penetrates, the nozzle attached to the end of the same (56) is arranged, and also penetrates the vertical upwardly directed flue pipe (20), whereby between the two pipes » (16,20) and the knee (17) seals (34-35) are provided, 12) spinning machine according to claim 11, characterized in that that the knee (17) is on the opposite side with respect to the entry of the horizontal flue pipe (16) to a drain pipe (18) is connected, which is in a drain line (19) for the Bath flows. , _, ..—— τ -. * - BAD Ow '-T2-;. . "■. 9 0 9 8Λ 6/10 1 8 13) Spinnmaeoliine naoh claims 1-5, characterized in that because they have a large number of parallel and Torah lifting devices (21) with all devices and organs includes the one of these, jam and advance devices assigned. -13 ·. ['
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