DE1984520U - DEVICE FOR REDUCING THE OUTPUT QUANTITY DURING THE STARTUP AND STOPPING PHASES OF A STRETCH TWISTING MACHINE. - Google Patents

Description

1412 pg 67.133 ^{Λ <} PO, October 1967

Maschinenfabrik Rleter AG, Winterthur

Process for reducing the amount of waste during the initial and / or outfeed phase of a draw twisting machine and device for carrying out the process, .. ..

) The vorliflgonsfa. This invention relates to a method for reducing the viährend start-up and / or run-out phase of a §treckzwirnmas chine ¹ resulting amount of waste as well as _v A is a V.orrlchr processing for performing this method.

In the drawing process of synthetic continuous filaments, the maintenance is constant the process conditions for the quality of the end product are of the greatest importance. Give way on a draw twister especially during the start-up and run-down of the machine, e.g. the drawing speed, the dwell times . Heating, preparation or thread joining devices, as well as the

Thread tension in the balloon · significantly depends on the conditions during ~ · 'From the production phase. During the run-up and run-down

must therefore, especially in the case of thermally drawn filaments, the material treated under - unsatisfactory production conditions as Ί; Disposal must be recorded separately from the pack. The resulting disposal not only causes costs for the lost '■

Ί: material but also for periodic removal, resp. for the '*

Maintenance of more or less automatic issue .ing removal} Systems. ',]

- 1 - ■ - I

■ -, - ■. ■ '' ν ■, ■> - - s · ■ ■. ^ J

In the following, the production phase is understood to mean the period of time during which the treated continuous material is applied to the pack arrives, and under start-up resp. The expiry phase is the period of time during which the material produced under unsatisfactory production conditions

/ is recorded separately from the pack as a waste, whereby these phases not only accelerate the spindles and delivery system from standstill, respectively. their lengthening to a standstill, but also their drive, which lasts for a long time, at speeds that are greatly reduced compared to the production phase can include (creeper).

The reduction of the output quantity by shortening the start-up and The run-out phase by means of reinforced drives and braking devices is known, but has the following disadvantages:

a) The investment costs for such oversized drives, which are underutilized during the production phase are unnecessarily high. This applies in particular to a separate drive from the supplier and spindles, the spindles with their higher moment of inertia preferably being replaced by a

- a controllable motor, e.g. a DC motor, can be driven.

b) A shortening of the phase-out phase by strengthening a central one The drive's brake is limited by the maximum braking torque that can be applied to the spindle drive belts without slipping Spindles can be transferred .. For further shortening are known ", because of the large number of spindles, centrally controlled single spindle brakes required. ·

ο) Shortening the start-up and run-down phase by accelerating sharply, resp. Braking the spindles including the drive * produces powerful Stresses on the entire machine, which affect the service life of the machine 'detrimental' -. are.

It is also known that the arising during the starting and stopping phase issue quantity-de * 4% sa®fe reduced ^ can be ,, indem- that the thread of the spindle emitting delivery mechanism later than the spindles set in _motion: resp. is brought to a standstill in front of the spindles. The success of these ■ measures is, however, strictly limited, since the thread rolls and lags laterally from the draw rollers as a result of the strong overturning when the delivery system is at a standstill. Standstill of the delivery system and spindles - must remain very small ^ yDie - the invention overcomes these disadvantages by providing a method for reducing the waste quantity of the unusable continuous material arising during the start-up and / or stopping phase of a draw-twisting machine, which is locally separated from that formed with usable material Package is wound up, is proposed, in which during these phases the spindle speed and the thread delivery speed steadily increase or decrease and the thread delivery speed is changed in such a way that the curve of the ratio of the spindle speed to the thread delivery speed is plotted over time, from one below the critical one , value corresponding to approx. 700 turns per meter in the produced thread, which however exceeds that of the production phase by a multiple, drops to the lower value of the production phase.

The device according to the invention for carrying out; of the process on a draw twister, with a den: thread to a Spindle discharging delivery mechanism and a spindle and delivery mechanism drive, consists in the fact that the delivery mechanism drive with means for Drive the delivery mechanism at reduced speed during a substantial part of the start-up and / or run-up phase.

Apart from the actual reduction in the amount of waste there are further advantages listed below, which lie in it, that with a slow intermediate phase, i.e. - in crawl gear, the creeping time during which the threads are drawn in for the first time,

\ can be extended significantly until the given capacity for the waste material is exhausted. This results in a longer,: -. time available for pulling in the sutures, so that the pulling in is carried out with fewer staff

- can be.. .\ . \

When pulling in without a slow intermediate phase (creep speed), \ der.Vorte.il of the invention, in that the amount of waste that is next to the package with normal material, e.g. placed on the waste cone can be kept small, so that the capacity which is available next to the pack, e.g. on the waste cone, is sufficient to produce several packs one after the other, without having to remove the waste material in between.

The present invention is explained in more detail with reference to the following figures described.

It shows; Fig. 1 is a perspective, schematic representation

; :; a .conventional iDraw twisting machine, I.

Pig. 2a-d diagrams of the time course of the delivery

- '■ ■ speed v _T (Fig. 2a) ,; the spindle turning »

i -: Jj ■ -;

":> - * number n ^; (Fig. 2b) ^ the ratio of spin-

'· ■' ■ -. speed to delivery speed η / ν ■■

i ■, ■; '... -. (Fig. 2c), as well as the resulting 4bgang volume; ■

:; per time unit A during the start-up and

•; ^; running phase of a conventional draw twisting machine

i; ^; sohine (Fig.; 2d), ■ ■: ■ ■ ';'] '-'

. \. Fig. Ja-d are diagrams of the time course of the _^same: Great; a conventional Streckzwirnma'- _ <

; ; -: machine, '- whose delivery plant is independent of: the;

:. _: . ; Spindles is driven. : - ' _: ■.

\ ; "Flg. 4a-d diagrams of the time course of the same;:; Large for a draw twisting machine that works according to;

- - -. 'FIG. 5ß-d diagrams for! the same machine ^ the one after ■ -._ ■ - ■. the inventive method with an intermediate

i'schenphase works during which the machine ■. ; ^; ne with reduced, constant speed; ^{; :} ten runs, \. ;. "■;''^; !

^.: "FIG" 6a-d are diagrams of a erflndungsgemäss working: _; ;, machine whose delivery speed during:; -: the AnIaufphase.und during _ramp:::: -is proportional to the spindle _speed;

; 7a-d are diagrams of a machine according to FIG. 5 * which ^; \ '■ - during an intermediate phase at reduced,; \ running at constant speeds during

the arrival; and run-down phase to spindle speed

'- ■. ". i proportional delivery speed,;; ^: . Fig. - 8 ■ a schematic representation of a device

to carry out the method according to the invention,

Fig. 8a + b each a variant of the embodiment of Fig. 8, Fig. 9-13 each a different embodiment of the device, Fig. L4 a summarized circuit program for the Operation of the switches in the various versions.

For a better understanding of the following statements, a brief description of the conventional draw twisting machine should be given sent ahead.

An undrawn continuous filament (Fig. 1) or a continuous filament bundle, both herein including thread 1, is drawn off from a winding 2 by draw-in rollers 3 and fed to a stretching zone formed by the following, faster-running stretching rollers 4. The draw-in rollers 3 and also the stretching rollers H- are driven in a rigid relationship to one another and are summarized here under the term delivery mechanism 5. The drive of the draw-in as well as the stretching rollers takes place from a motor 6 via a gear box 7. The thread is delivered to the stretching roller 4 at the delivery speed v, from h and arrives at a thread guide 8

the runner 9. » the one on. and from moving ring 10 um. the ^: spindle 11; runs as soon as the fader / the sleeve 12 placed on the spindle 11 or on the waste cone 13 located under the sleeve 12 on the spindle is placed. The spindles 11 receive their drive from a belt 15j placed over a drive pulley 14, the former being seated on a spindle drive shaft 16 running along the machine and connected to the motor 6 via the gear box 7. -The resulting waste is usually wound in the start-up phase on the waste cone 13 sitting on the spindle 11, in the run-out phase either in an upper winding 19 created separately over the pack or then again on the above-mentioned waste cone 13 below. Diagrams corresponding to the embodiment are shown in FIGS. 2a-d Xtfie discussed below.

As shown in the diagrams Fig. 2a-d, in a conventional draw-twisting machine (Fig. 1), in which the ratio of spindle speed η to delivery speed v _T (Fig. 2c) selects-

S Ij.,

During the start-up phase A = t to to ^{and the run} -out phase B = t_ to tu constant and the same as during the production phase P, the outflow quantities + 3 shown hatched in FIG P ₁ would be expanded as much as possible, although certain deviations from the normal process conditions would have to be accepted, which would still be possible in individual cases, such as when cold-drawing nylon, but would normally no longer be permissible with hot-drawn filaments, for example.

If the delivery mechanism 5 was switched on later than the spindle drive and switched off earlier than this, this could be done by delayed engagement or earlier disengagement of a clutch 17 shown in dash-dotted lines in FIG. Another solution would be to drive the delivery mechanism 5 by means of a separate motor 18, which is also shown in phantom in FIG. These execution } variants correspond; the diagrams Fig. j5 ^a -d ° .Da during the delay period D, with which the delivery starts later for the reasons mentioned in more detail below (Fig. Yes + 3b), the rotor 9 rotating on the ring 10 including the suspended thread 1 is only rotated due to the absence of the delivery, this duration D may only be so short that the resulting rotation in the thread piece FS between the draw roller 4 and traveler 9 the critical ratio above which the normal thread run on the draw roller 4 is disturbed, does not exceed. The delay in the start of delivery is therefore very limited, and the outflow quantity that occurs during the start-up can only be reduced slightly in this way, unless an extension of the production phase to P can be accepted as permissible.

If the delivery mechanism and the spindles are driven separately by one each

Motor 6 and 18 (Fig. 1), the acceleration time A _{p of} the spin }

i your as a result of greater indolence, and especially when a regular- | ·

rer, not oversized drive motor for the spindle drive \

is used, because of the aforementioned critical ratio only to I

the short time D must be longer than the soling time A, des' j < Delivery plant. The arbitrary extension of the time difference D is due to [:

the impairment of the thread run is not possible, unless: also the: time A is chosen again to be greater. In other words: if A _{2 is increased} to Ag », then A ₁ must necessarily also be extended to A ^ i. This produces but by the beginning of Produktlons- 'P phase in turn correspondingly more outgoing if an extension of the product ions phase before. P to P-, is not allowed.

Since the shortest possible deceleration time B ₂ , Pig. 3b, the spindles is given by the maximum braking torque that can be transmitted via the drive belts, even if the delivery mechanism and the spindles are driven separately, and since the delivery mechanism theoretically precedes the braking time B, Figure 2a, simultaneously with the spindles or practically only a very short negligible time If the spindles have to come to a standstill, the amount of waste that occurs during the run-down cannot be reduced, unless an extension of the production phase to P ₁ is permitted.

The method according to the invention, in which the and run-out phases by increasing the ratio the spindle speed can be reduced to the delivery speed is shown schematically in FIGS. 4a-d to 7a-d in the chronological sequence shown in diagrams.

During the first very short part A (from t-, - tp) of the start-up phase A- of the delivery mechanism and Ap of the spindles (Fig. -4a + b), the delivery mechanism is accelerated approximately proportionally to the spindles so that the ratio n _s / v _L the spindle speed for the delivery speed reaches a higher value than this during the production

phase P and remains constant for a short time _{until t p (FIG. 4c).} During the second, much longer part from Ί ' to t, the spindle änlaufphas e'".Ap (Fig. 4b), the delivery speed ¹ v _{L is kept} at a low value up to % -, constant (Fig. 4a), around then bring the delivery system up to operating speed in the third part of the start-up phase (from t 1 to t 1) with _{the greatest possible acceleration at the beginning of the production phase P. The delivery speed v T} during the second part of the start-up phase from

L

tp to t ^, and the duration of the delivery speed acceleration during the third part of the start-up phase from t. to t ^ are included

by
matched to one another in such a way that / the curve for η / v _{T shown} in FIG. 4c does not exceed the aforementioned ratio K ~ η Vv, which is critical for the overturning of the thread, at any moment. For most titers, this critical ratio is at a value corresponding to 700 rpm in the thread produced. During the braking phase B, the delivery mechanism and B _{2 of} the spindles (FIGS the fastest possible deceleration of the delivery mechanism in the first part (t, - to tg) to a low speed, the delivery mechanism is constantly driven in the second part from tg to tj with this speed and in the third part (t to to) switched off and proportional to Spindle speed decelerated to a standstill The clearly smaller resulting amount of waste can be seen from the hatched area in FIG. 4d.

The procedure is analogous according to Fig. 5a-d when the machine between \ two production phases P in an intermediate phase Cr for operating j

Processes are continued at a slow speed (creep speed). The delivery plant and: the spindles during the. Phase Cr ₁ or Cr ₂ driven constantly so that the ratio ηVv _{T is} above the ratio during the production phase P. This phase Cr- or Cr ₂ can of course be interrupted by a standstill (not shown).

The acceleration of the intermediate phase Cr, or Cr _? to the production phase P and the deceleration from the latter to the phase Cr or Cr ₀ takes place in the same way as in the case according to FIG. 4, for v _T after the

egg ■ Li

Time t _o or before time t, _, and for η after t, or before t ^ - (Fig. 5a, b).

A further variant of the method according to the invention is shown in FIGS. 6a-d and 7 ^ -d. It differs from the previously described method only in that the delivery plant in a first partial phase from t to t ~ of the start-up phase A, from standstill (FIG. 6a) or from standstill. starting from a small, constant delivery speed (creep speed) (Fig. 7) of an intermediate phase Cr-, is accelerated proportionally to the spindles so that the ratio n _s / v _{L is} constant and a multiple of the ratio n _g / v _{L of} the production phase P runs (Fig. 6c or Fig. 7c), but below the critical ratio K. In the second part (t ₂ to t ^) of the start-up phase A, the acceleration to the production speed then takes place, as previously described. The deceleration after the production phase P also takes place as previously described, with the speed of the delivery mechanism vv in the first part (t ^ to t, -) of the run-out phase B-. quickly lowered and in the second part (t, - to tg)

- 11 -

is reduced proportionally to the spindle speed so that the ratio η / V ₇ . a. at a multiple of the ratio during the

S yy

Production phase P is kept constant. This speed reduction is up to t, - (Fig. 6a), ie until the delivery mechanism and spindles come to a standstill or (Fig. Js.) Until the beginning of an intermediate phase Cr, at the time from tg, during which the machine is operated at reduced speed, continued.

The illustrated forms of the inventive increase in the ratio η / v _T during a substantial part of the on and off

S JLj

phases A and B to a multiple of the ratio during the production phase P show only 'examples of the possible Curve, the existing conditions within the scope of the invention can be adjusted at will.

A draw twister equipped to carry out the described method according to FIGS. H and 6 is shown schematically in FIG. In addition to a drive motor 21 for the delivery mechanism 22 and a drive motor 23 for the spindles 24, the machine has an additional auxiliary motor 25 * which acts on the feed roller 28 via a reduction gear 26 and an electrically operated coupling 27. The drive motor 23 is at time t, by closing;. ^; of switch C, approached. During the first part of the start-up phase A ,, that is, during the time t 1 to t 1, Fig. 4a, b, or t to tp, Fig. 6a, the clutch 27 is activated by engaging switch C-. \ engaged, and the auxiliary motor 25 drives the delivery mechanism 22, P consisting of the feed cylinder 28, the delivery mechanism gear 29, including ; - ~

Drive for the stretching rollers j50. The delivery mechanism motor 21, which is switched off by the open switch C _{2, also runs idle (cf.}
also Fig. 14). ^: ; ; ;

During the last part of the start-up phase A, ie during the time t 1 to t 1, FIG. 4 a, or t to t 1, FIG. 6 a, the delivery mechanism motor 21 is switched on by switching on the switch C, the auxiliary drive 25, 26, 27 disengaged or overtaken by opening the
Switch CU, and the delivery plant is quickly accelerated to full operating speed for the production phase, with the
Ratio η / V ₁ . the spindle speed falls to the delivery speed to the value desired for the product. At the beginning of the production phase P the thread 1 is divided by lifting the rings 10 from the waste cone S (shown in phantom in Fig. 8) on the
Sleeve 12 'wound on which the pack 20 is now in the usual way
is being built.

After the end of the production phase P, at the beginning of the run-out phase B. or Bp at time t, _, FIG. 4a; t ^ ,, 6a, the spindle drive motor 27) is switched off by opening switch C, and the spindles are braked by means of a braking device known per se (not shown). At the same time, the delivery mechanism motor 21 is switched off by opening the switch CU, and the delivery mechanism 22 is
by the acting thread-stretching forces or additionally after
Closing the switch C and engaging the clutch 27 braked by the gearbox 26 until the lower speed of the auxiliary drive is reached. Thereupon the delivery plant 22 is through

the auxiliary drive 25, 26, 27 is driven further at this speed (Fig. 4a-d) or further decelerated proportionally to the spindle speed (Fig. 6a-d), such that the ratio η / v _r always

S Li

a multiple of the ratio during the production phase P ^: amounts. - - - ";:

; For the type of method shown in FIG. 4, the auxiliary motor is a normal asynchronous motor and the transmission 26 is a reduction gear, the reduction ratio of which can be adjusted by exchanging change gears. For other types of the method, as shown, for example, in Fig. 6, the auxiliary drive is provided with a speed- adjustable motor 31> Fig. 8a, preferably a Glel.cn--

i current motor, and a fixed reduction ratio having gear 32; equipped. In Fig. 8b. is an asynchronous motor

_{: used} in connection with a gear 34 ·., which is continuously adjustable during the run. The couplings 27 can be used as; Overrunning clutches or as controlled, preferably electromagnetically engageable and disengageable clutches or also as controlled slip clutches; be trained. ■■■; ■■ "": ',: ■ ' ■■ ■

A further embodiment of the apparatus for Durchführung.der method according to Fig. 4 + 6 in Fig. 9 schematically dargestellt.Der delivery mechanism drive motor 35 as by means of the switch Cp and C _3. Pole-changing motor operated at 2 speed levels. At its lower speed level (switch C-, closed) it drives the delivery mechanism as an auxiliary drive via a transmission 36, which is designed as a change gear transmission for the type of method shown in FIGS. 4 and 5. For the one shown in FIG

- 14 -

Type of method, the transmission 36 must be designed to be continuously adjustable in speed during operation. For the last part of the start-up phase, the motor 35 is switched to the higher speed level / (switch Cp closed / C-, open), so that, as the main drive, it accelerates the delivery mechanism 37 to full operating speed up to the start of the production phase ρ The spindles are driven in the same way as in the device shown in Fig. 8 ./ / ^; - /, -, "·

After completion of the production phase P, the spindle drive motor becomes 38 switched off by opening the switch C ^, and the spindles are braked. At the same time, the delivery speed v_ / by switching the motor 35 (C ~ closed, Cg open) to the lower speed level reduced so that the ratio η / ν- to a multiple of the ratio during the production phase increases. If the transmission 36 is designed as a steplessly adjustable reduction gear, the delivery speed can accelerate- "

80 I.

Referring to Fig. 6 proportionally / reduced so that the ratio / 'η / v _T remains constant until the machine comes to a standstill (Fig. 6).

S Ij

While the previously described examples of facilities to carry out the process on draw twisting machines with separate Drives for the supplier and the spindles are related In the following, equipment for draw twisting machines is included only described a single main drive motor.

In the solution shown in Fig. 10, the asynchronous main drive motor drives 39 the draw twisting machine via the gearbox or countershaft 40, which is used to adjust the machine speed,

- 15 -

The spindles 4l are via the drive belts from the countershaft 4θ 42 and the shaft 45 driven directly, while the drive of the Delivery mechanism 44 through the coupling 45 by means of switch Cp during the barrel can be engaged or disengaged »Der Lieferwerk-Hilfsantrieb ^ consisting of the auxiliary motor 46, .dem gear 47 and the Coupling 48 is constructed in the same way as in the arrangement shown in FIG.

During the first part of the start-up phase A, the delivery mechanism 44 is separated from the main drive by the open clutch 45 (switch Cp open) and is kept _{constant at a reduced speed by the auxiliary drive 46, 4J 5} 48 (switch Cz closed) (corresponding to FIG. 4) or driven proportionally to the increasing spindle speed (corresponding to Fig. 6). During the last part of the start-up phase A, the clutch 45 is engaged (switch Cp closed), the delivery mechanism 44 is quickly brought to full operating speed, and the auxiliary drive _: 46, 47, 48 is overtaken or disengaged by means of the clutch 48.

Similarly, the main motor 39 is switched off during the run-down phase B. (Switch C, open), and the spindles 4l are braked. At the same time, the clutch 45 is disengaged (switch Cp open), whereupon the delivery mechanism 44 by the thread-stretching forces and after Engagement of the clutch 48 is slowed down by the transmission 47 so far is that its drive can be taken over by the auxiliary motor 46 in the manner described earlier «.

Another drive version without an auxiliary motor is shown in FIG. 11, with which the programs in FIGS. 5 + "7 can also be run.

- 16 -

The motor 49, which can be pole-changing in this case by means of switches G and CL, controls the spindles at the lower speed level (switch C closed) via the gear unit 50 at the reduced spindle speed during the intermediate crawler phase C (corresponding to FIGS. 5 and 7) between two production phases, drives the spindles at full operating speed at its upper speed level (switch C, closed) A (Fig «4 to 7) reduces the delivery speed so far (switch CV closed) that the ratio η / v _T der

_? S L

Spindle speed to delivery speed a multiple of the ratio during the production phase remains »During the last Part of the phase v \ r the clutch 52 is fully engaged (switch Cp closed), .. so that the delivery plant 51 up to the beginning of the Production phase P is accelerated to full operating speed.

Conversely, during the run-out phase B following the production phase P, the spindle speed η is increased by switching the motor 49 to the lower speed level (C closed; C, open), see dash-dotted lines in FIG any intermediate phase C necessary value corresponding to FIGS. 5b and 7b ', or the spindles are brought to a standstill _{after the motor 49 has been switched off (C 0} and C ₁ open) according to FIGS. 4b and 6b.

- 17 -

At the same time, the delivery speed is increased through controlled opening of the clutch (CU open, C-, closed) with the slip reg = ler 52 and possibly by braking by means of an additional, on the Delivery mechanism acting, preferably electromagnetic brake 54 so lowered far so that the ratio η / ν, in the desired way, corresponds to

S Jü

Figures 4c to 7c, increases.

Another "variant for carrying out the method described consists in the purely electrical treatment of the speed regulation by means of a regulated DC motor each to drive the Delivery mechanism and the spindle drive, which is also suitable for operation with the crawler intermediate phase C.

In FIG. 12, a regulated direct current motor 55 drives the delivery mechanism 56 via a rigid transmission gear 57. A regulator 58 and a tacho dynamo 59 are attached to the motor 55. The spindles are driven by a regulated DC motor 60 with regulator oil and tacho dynamo 62. The control voltages of the two regulators 58 and oil are picked up by the setpoint generators 63 and 64 by switches G ', C. ,,. Cp and C- ,. In addition to that for executing the program according to FIG. 4 (solid lines), the circuit diagram also includes the circuit that is used for the program according to FIG. 5 (in dashed lines). If the program according to FIG. 4 or Flg. 5- are driven, the respective positions of the switches C, G ₁ , Cp and C- * can be found in the switching program Fig. 14. So that this switching program is valid not only for Fig. 12 but generally for all variants of this description, the switches are designed for simplicity.

. _ 18 -

The same reference letters have been used in all figures accordingly.

The embodiment shown in FIG. 13 again offers two regulated direct current drives which are aM & r dependent on one another and are suitable for executing the programs in FIGS. 6 and 7.

The DC motors 65 and 66 for the delivery mechanism 6 ¹ J as well as for the spindle drive 68 are each a - tachodynamo 69 ,. 70 and a controller 71j 72 are included, as well as a setpoint generator 73 and 74 that emits the controller voltage of the controller. The voltage of the speedometer does not only influence its own controller 71 of the spindle drive 68, as in FIG. 12y, but also serves as an output variable for the setpoint generator 7 ^ ₁ . controls the Dieferwerkregler 72 »The solid compounds are 6 _S for the program case, Fig., the dashed connections for the program case, Fig. 7 is provided. The ■ switching program of switches C _s C.,. Cp * C ₅ ie their closing times * goes again _r off the charts in Fig. L4 forward and requires no further explanation. <;

A few remarks and numerical data are given ^ Finally _f lie for all Beispiele'und embodiments have applicability

In normal operation j, ie in the production phase P, ns / v ^ is at a value corresponding to 10-15 revolutions per meter. This is necessary in order to achieve a sufficient yarn tension build the package \. A ratio of n_ / v _r = 20 - JÖ. Revolutions / m ^ j that is a multiple of the normal operating ratio * may already be |

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Claims (9)

^ a IA. ^ Claims <ftie: Dfgse underlay (Bsre! Tf ** s ^ 4äf «i protection claims) is the last one submitted; it originally deviates from the word .elngivoiohf · ■■ '· ■ -' ·.) ■>> ->. The legal significance of the discrepancy has been carefully examined. Originally classified ■ Unr ι. ,,. ·. '- ■,'. »Ι ΐ-ϊ -.- i in the official octets. You can jetiera & it cone proof rapid infersssos g.ibiJlirciif,.; ",", Ywsehtiri vierd "On request, fotukopisn · or film · • eseiive? U the usual prices qö Lieferi, Deulsches Patentamt. GM) smokestest »lp 1. Yorrielitung on a Streekzwirnmasehine with a the Paden to a spindle efferent delivery mechanism and a spindle and delivery mechanism drive, characterized geke η η "- is characterized in that the-lieferwerkantrieh with means for driving the delivery mechanism with reduced Ge sehwind ig" = ness throughout a substantial T _e ils the start-up and / or the phase-out phase is equipped «, 2. Gate direction according to claim 1 _? characterized by an auxiliary drive with a drive motor (25)? a gear (26) and a clutch (27) (Pig <»8) _o 3 ο Device according to claim 2 _S, characterized in that the motor is a speed-regulated motor (25) and the gear is a change gear »(26, Mg, 8a). 4. Apparatus according to claim 4 2, characterized geke η η ~ _s that the motor (25) is a non-speed · = regulated motor and the transmission (26) a stepless! adjustable transmission gear is (Figo 8b) " 5. Apparatus according to claim 2 ,. thereby geke η η ze ic h η et ' ₉ that the clutch (26) is an overrunning clutch. 6. Apparatus according to claim 2 _S thereby geke η η ze ichnet ', since the clutch (27) is a controlled slip clutch. ■ 7. Precaution S claim 2 ₉ characterized gek en η _? that the motor (25) is a pole-changing motor (Hg, -9) .. 8ο device according to claim Ij dadunii g e k e η η ζ e i- net that - 21 - that "with the drive removed from the spindle drive (16) of the delivery system (5) this can be uncoupled from the spindle drive (Figo 2) ο 9 ο Device according to claim 1, characterized in -j that when removed from the spindle drive · = menem 2-speed drive of the delivery plant this Driven by a controllable slip clutch (53) becomes (11). ΙΟ »Device according to claim 4? thereby geke η η marks ₉ that the delivery mechanism is additionally braked with a controllable brake (54) ₀ 22nd