DE1710624A1 - Method and device for treating yarn - Google Patents

Description

PATENT LAWYER "· '"

₅ l _a l _R 10624.

DR. ING. A. VAN DER WERTH DR. FRANZ LEDER

£ 21 HAMBURG-HARBURG '8 MUNICH 8

Wl LSTO B FE R STR- 3 2nd - TEL. (04 II) 77 08 61 LUCILE-GR AHN-STR. 22 -TEL. 1081 Il 44 OS

MUncheiif 5 January 1968

Applicant: The Klinger Manufacturing Company Limited

Silver Street _for "Edmonton, *

London N. ifc, "England ' m

Method and device for treating yarn

The invention relates to a method and an apparatus for treating yarn, especially thermo,. plastic yarn or yarn with a thermoplastic Component.

In known methods and devices for crimping yarn, the yarn is compressed in the longitudinal direction f and deformed into a plug while it is in a heated state, and then is made into the plug shape fixed while it is in a heat-setting chamber, for example, to a plug from crimped yarn to form. The yarn is then usually transferred from one end of the plug onto a supply package wrapped.

The yarn leaving the fixing chamber is in the form of a dense plug and normally

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'BATH

at a higher than ambient temperature · Ea was found that when a tension was applied to the yarn when winding on the supply pack, with the yarn still at an elevated temperature, the Tension can aerate some of the crimp of the yarn.

It is an object of the present invention to provide a method and a device for the crimped yarn in the form of a plug to allow the yarn to relax and cool before tension is applied to the yarn, e.g. B. then wound the yarn into a supply pack; will.

According to a feature of the invention, a method for treating yarn is proposed in which a plug of the crimped yarn is moved into a treatment zone, the crimped yarn through the treatment zone transported with the help of a gas stream and the yarn is pulled out of the treatment zone.

In accordance with another feature of earth weaving, there is provided an apparatus for treating yarn which comprises a comprises hollow treatment chamber, means for movement or assisting the movement of a plug of crimped yarn through the hollow treatment chamber, which Comprise means for generating a gas flow along at least part of the treatment chamber, wherein daa crimped yarn is conveyed through the treatment chamber with the aid of the gas flow and with means for removing the yarn at an output end of the treatment chamber.

BAD ORIG'NAL

109850/1387

During the time that the plug is moving through the treatment zone, the crimped yarn can move relax and fully develop a permanent frizz. The one available for this purpose The length of time will depend on the length of the treatment zone and the speed at which the yarn travels Treatment zone passes through. ■ _. ·. ' <: _

The gas flow is preferably generated by removing gas from the £ Treatment zone is withdrawn by suction devices ^

and, if desired, the apparatus may further blowing 'devices include _s üb a gas to an input end of the Bebandlungskammer blow to the suction device sur ^ Srzeugnung to support this gas flow. Alternatively, a gas blower can also be used to generate the gas flow.

Bas gas, which can advantageously be air, should

a lower temperature than that in the treatment camraer incoming plugs of the ruffled .. yarn on »

wise to bring about a cooling of the yarn, while j

it's still in the plug and before it's ™

leaves the treatment chamber. |

therefore the gas must be air at ambient temperature

Control means may be provided to control the rate of exit of the yarn from the exit end of the treatment chamber. Such control means can are dependent on the speed of movement of the yarn along the treatment chamber or are dependent of the volume of the wad of crimped yarn contained in the treatment chamber, and they may comprise photoelectric control means.

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Pi-D ORIGINAL

In one embodiment of the invention, the control means is a photoelectric device and comprises two length of the treatment chamber spaced apart photo sources for determining the structure of a plug of yarn in the chamber at points spaced apart from one another. In this case, the control means can be arranged "so that they accelerate and decelerate the device for removing the yarn when a plug of crimped yarn builds up to a predetermined extent in the treatment chamber " so that the end of the plug that is produced is the endeavor has to keep to these spaced-apart places.

The Behandlungakammer may comprise a hollow tube which is made of glass, metal or other suitable material. A glass tube or a tube made of transparent plastic is especially suitable in such cases where photoelectric Steurmittel are provided, which are dependent upon actuation of light passing wel ches through the wall of the pipe or is reflected by this to determine the extent of the resulting plug to be determined in the pipe

Alternatively, the tube may be made of metal, in which case a translucent F _e nater or translucent window must be provided in it to photoelectric devices to allow control of the Pfropfenaufbaus.

The tube can be straight or curved and can be generally horizontal or vertical Be arranged. Preferably the tube is vertical

109850/1387 &&

arranged or at an angle of, for example, 10 40 ° to the vertical direction «

The tube can have a constant internal cross-section or it can be extended towards the end at which the thread is drawn out allow, in which it has been forced previously mono- M, and preferably the bore is sufficient to allow the plug to a loosening unfolding ^ j.

Certain advantages have been found in providing straight hollow tubes, primarily in order to accommodate the To keep frictional forces exerted by the yarn to a minimum value. If necessary, treatment cambers from For example, to use 1.2 - 1.8 m in length or more, then for practical reasons (i.e. that the dimensions of the entire curling devices not too large become) necessary »to design the chamber, for example, U- or J-shaped. ■

An open connection can be provided at the yarn outlet or near the yarn outlet of the treatment chamber to allow gas to escape from the chamber, for example to the suction device. The joint can have a plurality of openings which are arranged in such a way that crimped yarn cannot be drawn through the openings into the suction device g .

When the P drip on ana geter! 'UHiltora yarn in a curling device? gebi.i'lit viiü, woJoho a chamber for WiJroieuric! mi a ,. ·> ^f:. ·· «tiinvüi-lcendo MiwLoJ (bfii-n Uiiu

109850/1387 _ΕΛ0

includes a toothed wheel) for moving the yarn through the fixing chamber »a hollow shoe can be provided, which is arranged in such a way that it releases the yarn from the means acting on the yarn and the yarn into the Treatment chamber leitot. This s $ huh can with gas openings be provided, which allow the gas access to the yarn inlet of the treatment chamber to the Support forward movement of the plug in and / or through the treatment chamber

Heavy yarns (from 2,000 to 4,000 deniers), especially polypropylene yarns, have a relatively high retention capacity and can be used for a comparatively stay at an elevated temperature for a long period of time, change the heat setting chamber to have. The freedom makes it possible to achieve a proportionate long time interval (about 45 seconds and even more) to be provided between the point in time at which the Plug of crimped yarn leaves the heat setting chamber of a crimper and the time at which the curled gain is subjected to tension by being wound onto a supply pack, thereby reducing the curled Yarn is allowed to cool down and relax before it is exposed to this tension. At the Crimps of polypropylene yarn have been found to cause the Treatment chamber must be longer than when treating, for example, nylon yarn of the same denier.

A stuffing box KrUueelvorrichtung with an inventive Treatment chamber will now be referred to with reference to FIG the drawing is explained in more detail in the example.

10 9 8 5 0/1387 bad original

Smooth »ie uncrimped, yarn, such as z. B. nylon, polyester or polypropylene is brought into contact with the heating surface of a heating device 4 from a supply reel 1 around a feed roller 2 and a loose tube 3. The yarn leaving the heating device is passed through a pair of powered pinch rollers 5 into a short-length Stojfcüchaen-Kräuaelkammer 6 and the heated yarn is compressed in this chamber in the longitudinal direction to us to form a plug of crimped yarn '. This grafting is creamed by the outlet opening of the Krauselkammer 6 by the circumference of a driven overall * A Förderradea 7 is removed which 1st arranged such that it guides the plug of crimped yarn through an arcuate fixing chamber 8 which can be heated by any suitable means .

The conveyor speed with which the toothed conveyor wheel the ruffled Gernpfropfen through the Fixlerkaamer conveyed is adjusted so that the yarn is heat set in its crimped shape.

A tubular shoe 11 is at the outlet end of the fixing. J chamber arranged in such a way that it

βleitern forwards yarn into a treatment chamber. i

The treatment chamber includes an internally smoothed one Glass tube 10, which is arranged on a bracket 12, with its inlet end is directed so that it is the plug from crimped yarn from the shoe 11 takes over. An air suction connection 13 is arranged at the outlet end of the pipe, which is shown in section and which has a cylindrical part H provided with many openings and a nozzle 15 for connection to a suction pipe

- 8 -109850/1387 ^CAD original

8th -

owns. The connection 13 has an articulated bottom wall which is provided with an opening 16, through which crimped yarn can be pulled out. The opening 16 is large enough for the passage of the yarn removed from the plug, but not large enough for the plug itself. The bracket 12 is supported by a hinge 17 and by a screw 18 which extends through a slot 19 in the bracket. A protrusion 20 on the bracket 12 is a microscbalter 21 arranged adjacent. The microswitch is activated by a not shown frame of the crimping device carried.

A sensor 24 comprises two piezoelectric cells 22 and 23 and a light source for each cell, which is arranged in such a way that it shines light on the associated cell throws. :

The photoelectric cells 22 and 23 and the light sources are arranged outside the tube 10 and are spaced apart along the tube. The cells are arranged so that they respond to light emerging from their associated light source, this Lioht falls through the pipe. The cells supply control signals depending on changes in intensity of the light they have received.

Winding devices, which are used to pull off the yarn through the opening 16, comprise a drive roller 25 » which by an electric motor 26 with a variable speed connected to a power source at 26a ad is driven, a take-up spool 27 and a thread guide 28 movable along the spool

109850/1387

RAD OFvO'-AL

leaving earn runs around a leadership role 29 and thru Tension rollers 30 and is wound onto the spool 27.

A control device 31 connected to the photocells 22 and 23 is used to control the speed of the motor 26 as a function of control signals which ύοπ den! Photo lines are obtained. ""

In operation, the wad of crimped yarn moves:. £ through the shoe 11 from the fixing caramer; 8 into the tube 10. ■ '.- .;' . "" A connected to dan connector 13 via an air pipe air 'suction device (not shown) draws in output. "- Λ' aο end of the tube of air, thus creating an air flow through the Garneinlaßöffnung of the tube and through the tube, this air stream. It supports the movement of the crimped yarn through the Rchr in the direction of the opening 16.

The wad of crimped yarn is made from the Pixior

chamber conveyed further by the toothed conveyor wheel and.

runs into the horizontal part of the tube 10, where he

is detected by the air flow. In the pipe falls dor j

Plugs of crimped yarn under the influence of the ™ Gravity towards the exit end of the tube J

and is supported by the air flow.

The speed at which the yarn is pulled out through the opening is set by the control unit i1 controlled which controls the speed of the winder. If a particularly strong plug of crimped yarn, such as a tube, builds up in front of its exit end, this accumulation interrupts the light beam from the light source to the photocell 22. This causes a

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EAD ORIGINAL

The light intensity on this photocell drops below a specified value. As a result, the control device 31 speaks to the different output of the photocell 22 and causes an increase in the winding speed, so that the speed "at which the crimped yarn is pulled out through the opening 16" experiences an increase · After that, and consequently the accumulation of crimped yarn in the »tube to decreases below the photocell 22, also the light intensity at the photo customs 22 again rises above this predetermined value.

When the accumulated plug of crimped yarn has been broken down to such an extent that the photocell 23 also receives the predetermined intensity, the control unit will respond to a corresponding control signal from the photo cell 23. ^v the winder reduce the extent, the yarn plug la pipe daft will increase.

The control device is designed in such a way that it strives If "the rear end of the" tan plugging zwinefcea hold the two photocells 22 and 23 sn, they will load controls the speed at which the crimped yarn is drawn out through opening 16.

The crimping device comprises a safety device, which is arranged so that the curling device switches off if an error occurs in the operation of the curling device, as a result of which the plug is crimped yarn the tube 10 accrues. As soon as the inlet end of the pipe is filled with or stopped up with an accumulated plug, one from the fixer chamber 13

- 11 - 109850/1387 bad original

Further plugs entering the shoe ti cause a high pressure at the inlet end of the pipe 10.If this pressure rises above a predetermined value, the bracket 12 and the pipe 10 are caused to move away from the shoe 11 relative to their storage under the influence of the increased pressure move away. That means the bracket will be around the joint 1? pivot, the slot 19 ormöglioht a movement of the bracket relative to the screw 18. The specified pressure, with soft a Bowe M

adjustment of the bag, i3t depends on the suit of the Screw 18 on bracket 12 and can be adjusted. When M the bracket pivots about the joint 17, the projection 20 presses on the microscope holder 21 and actuates it, whereby the curling device is switched off.

The suction connection 13 forms a chamber in which the cylindrical part 14 provided since openings is arranged and is in connection with the pipe 10, and from which air or another gas can be sucked through the nozzle 15, so that a gas or Air flow through the tube 10 and outward through the cylindrical part 14 provided with openings * is generated, while aich % of the yarn plugs through | moves the cylindrical part 14 to the bottom wall, at which the yarn is pulled out of the front end of the plugIn the articulated bottom wall of the connection 13 a slot is made, which extends from the edge of the wall to the opening, in the sliding of the To enable yarn into the opening 16 and to facilitate threading.

The suction connection 13 can be provided with an opening on its side instead of at its end, as described.

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BATH ORIGINAL

With this arrangement, the end of the suction connection is perforated to provide an exit for the air flow.

It can be seen that depending on the cooling time, which ▼ on de «crimped yarn is required, the length of the Pipe can be changed

The cross-section of the treatment casua becomes larger hold as the cross-section of the fixation recognized so that the plugs of crimped yarn entering the treatment channel increase its cross-section and relax

In the embodiment described, the suitable inner diameter of the glass tube depends on the extent of the crimp imparted to the yarn, as well as on the denier and the composition of the yarn. The diameter is kept large enough to allow the yarn to relax and not so large that the yarn can easily become tangled in the tube. Confusion of the yarn is less likely if the curls are kept in precise succession along the yarn. If the diameter of the tube is too large, later curled parts can overtake previously curled parts in the glass tube. If this takes place, there is a tendency that the yarn is featpressed at the outer end of the tube and a drawing of the yarn is hindered or prevented.

The following example describes the application of the invention!

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10 9 8 5 0/1387 bad original

Am 70 ply nylon yarn of 1,100 denier was under Using a Glaarobreo 76.2 cm long with a Inner diameter of 1.75 cm and curled shape shown in the drawing. Photocells were about 25 »4 and 38.1 cm from the outlet end q of the pipe. net. The yarn throughput speed between the rolls 5 was 427 m / min, and the diameter of the fixing chamber was 0.95 cm. Ambient air was passed through the tube is sucked by means of a suction device «which is connected to the suction connection at the outlet end of the glass tube φ

was connected. ^

In a modification of the embodiment described, the crimped yarn is heated in a physically relaxed state after ea has been crimped and before it is under Tension is set and wound onto the Yorra pack. With such a modified execution forum becomes dl · air (or dae gas), which at least through A part of the glass tubes atroat, adjoining the inviting end of the tube is warmed instead of gakUblt or kept at ambient temperature. Since the pipe has a suction connection and an air inlet opening or air inlet Provide openings, using a stream of heated air awieohan ™ dea Xinlafend "the pipe" and egg place "usulaeetn, What a way the Bndan de Rohres runs, and what it is other · »cooled«! or the air supply located on the air conditioning system s # ieoh »n di * a» r stall and i d «Au • nd · d ·· ··· So the step · Tail atm Olaerohr ·· can · represent a heat fixation zone odor d «n TtIl #in« r Wftrft # rf ix i er zone, in which there · ruffles · and in «Inapt physically tense state · yarn tin · -heat effect is caused, while a second

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109850/1387

BATH ORIGINAL

Part of the glass tube can form a cooling and de-tapping zone · In addition or as an alternative, the tube 10 or a part of the tube is heated by, for example, electrical devices, resulting in the herbaceous character of the yarn can be changed.

TSe can be seen "that means used for yarn treatment" as a. B * shrinking or finishing agent, in the treatment «- * Chamber can act on the yarn to the properties of the crimped produced by the crimping device Improve or change yarn.

BATH ORIGINAL

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Claims (1)

Fat ti t aal prtl ο h e ι 1 · process · » « ur treatment you yarn, thereby 6ai «In Ffroyfan a ·· $ ekr * uaelten Oarnae »Ta · Ilitimiaifirtfniati · e * br * Qht and that« «krttoeelt · camouflage ait BUf * il— feuMtnme «through 61 · Bthwndlungggooo b« -> Sftjrtart «» i Am tee «·« · * «r Btfaandloaesxoa · b« wneg «ioetii #Vr 1mt ** m kamvrmh 1, flaiimHi ftk .J ₁ V ^ *? ^ I ^ Oa «rtr« M iarofa ¹ ' berror <«call« α «Irft. 6 «Tarfafar»! «Oh« in · «d« r «! Away- «Adoroh gefcaettseiebiurt, dal a« r Gaestro «through - 16 -1098S0 / 1387 We generate suction *. 7. The method according to any one of the preceding claims, characterized in that the yarn is subjected to heat in a first part of the treatment zone is exercised and that the yarn is then allowed to cool in a second part of the treatment zone will. 8. The method according to claim 7, characterized in that a cooling gas stream for flowing through dee second part of the treatment zone is initiated. 9. The method according to claim 8, characterized in that this cooling gas flow by suction is produced. 10. The method according to any one of the preceding claims, characterized in that the plug of crimped yarn is relaxed as it passes through the Treatment zone is promoted. IU procedure according to one of the previous aprticb «} l · .: 3arch g 3ksum: ei leveled _r ä & ü daa advance dee graft ■ ■ .. '· ^: ' - .. ο gehr ^ uoe? tec; Yarn through the treatment sneer -. C- '* ■ '■;>: ■ ^ oo Guni from the atlrtiseitenon end doo V-: \ - ■■: ■ - .: --- ■ -. : ■ <- ^; Vir- r Q ", nclmiwliia ^ il hbgezogan wire, white- from hand one of yarn, table f ..: - ·?: -, ji i.- - ^ n. .-, heated era Xus tasi eat a Kräueela; BATH ORIGINAL , - ^ - ■■ "- ■■■■■ ^ ■ ϊϋΐΤ". . : -r ^ii! i. - 17 - is introduced, the yarn is compressed in the longitudinal direction in the crimping zone to form a plug of crimped yarn and in which the plug of crimped yarn is conveyed through a fixing zone, characterized in that the yarn plug is transferred from the fixing zone into a treatment zone is ,, the plug of crimped yarn Dafi with the aid of a gas stream by the treatments one! is conveyed and ± that the plug of crimped yarn in singe- W can not cool spanntem state in the treatment zone Jk and that then the yarn from the front end of the plug is peeled off from crimped yarn. 13 · Method of treating yarn in which the yarn is heated in a crimp zone is introduced the yarn lengthwise in the crimp zone to form a plug of crimped yarn is compressed and in which the yarn is subjected to heat setting while in the plug form is clamped, characterized in that the plug of heat-set crimped yarn in a treatment- J son «, through which a gas stream is introduced in the direction of movement of the plug, so that the | Yarn in the treatment zone in its plug-shaped Shape * is not constrained, cooled, and that then the yarn from the frontal end of the plug is peeled off from crimped yarn. 14 · The method according to claim 13ι, characterized in that the gas flow is caused by that gas is drawn through the treatment area. -10- 109850/1387 BAD ORiGSNAL - ίο - 15. A method for treating yarn according to claim 13, characterized in that the plug made of crimped yarn inevitably at the output end of the Crimping zone detected and inevitably out of the crimping zone Will get removed· 16. The method according to any one of the preceding claims, characterized in that the advancement of the Wad of crimped yarn through the treatment zone determined and the speed at which the yarn is drawn off the front end as a function controlled by this advance. 17 * Method according to one of claims 13 - 16 » characterized by the fact that the plug of crimped yarn is removed transversely from the outlet end of the Krauaelzone » 18. The method according to any one of the preceding claims »characterized in that the yarn through the Treatment zone is conveyed without tension being applied thereto. 19 «Apparatus for treating yarn with means» to bring the crimped yarn into the front of a plug »characterized by a hollow treating chamber (10) with a inlet and an outlet, this inlet being arranged so that it can be passed through a dispensing device (8,11) ejects yarn, by means (30) for drawing yarn from the chamber through the outlet and by means (13) for generating a gas flow through the treatment chamber in the direction from the SinlaB to the outlet. - 19 -109850/1387 bad op: gnal 20. The device according to claim 19, characterized in that the chamber (10) has a suction connection (13) having an outlet (15) for withdrawing the gas from the chamber and having an opening (16) through which the yarn can be drawn from the chamber. 21. Device according to one of claims 19 or 20, characterized in that g «indicates that the suction connection has an articulated wall, which with this opening (16) is provided. M. 22. The apparatus according to claim 21, characterized in that cie articulated 'attached wall one Has a slot wrapped around one edge of the wall extends to the opening (16) \ Provision for one of claims 20-22, characterized in that the opening has a smaller size than it is visible for pulling the yarn out of the chamber in the form of a plug . 24. Wt-- ii-Ci ¹ . at?·- ..-.if © ine »; · -. :: ■. ,, ** «■? 23 go through it aiw * isi- ^? i0 T: - ' the Form a iciitun ^ .... ":, ft - * ■■ eiss * i ·. 24 ί thereby, k Torr J-.f 8raigt ^ itfe eioei, > thereby ^ cek B / -. 0 ORIGINAL Chamber (10) is arranged «that the force of gravity the movement of the yarn plug through the chamber under · = » can support. 27. Device according to one of the address 19 -26 _t characterized in "that a safety device is arranged to" the operation of the apparatus to interrupt, if einl faulty storage of the yarn occurs in the treatment chamber, which an over a predetermined amount hinausreiohenden resistance. stands or causes more yarn to run into · '· ";" the treatment chamber prevents 28. The device according to claim 27t, characterized in that the safety device comprises a support element (12) which a relative movement of the Treatment chamber opposite the device allows if the yarn is prevented from running further into the processing chamber or if at least one of this is prevented a predetermined amount of resistance is opposed, and the means (20,21) for determining the Relative movement of the treatment chamber and the interruption of the operation of the device are present if a solo relative movement takes place » 29. Device according to one of claims 19 -28, characterized in that the means for ejecting of the crimped yarn comprise a fixing chamber (8), in which the crimped yarn is in the form of a plug is heat set, as well as a serrated surface with which the yarn plug engages and through which it is moved by the fixing caraner (8). 109850/1387 - 21 - BATH 21 - 30. The device according to claim 29, characterized in that this area through the circumference of a Wheel (7) is formed, and that the fixing chamber (8) is arcuate * 31. Device according to one of claims 19 - 30, characterized in that a shoe (11) at the exit the fixing chamber (8) is arranged to release the To cause or to stop the clogging of the toothed surface support. 32. Device according to one of claims 19 - 31, characterized by sensors (22,23,3i) for determination the advancement of the wad of crimped yarn the treatment chamber (10) and for controlling the speed at which the yarn exits the outlet end the treatment chamber is pulled out in response to this advance. 33 · Device according to claim 32, characterized in that it is indicates that these sensors are photoelectric means: ^ (22,23) include. ■: '- 1098 50/138 7 baths original Blank page