CN1609294A

CN1609294A - Spinning machine comprising a condensing device

Info

Publication number: CN1609294A
Application number: CN 200410086937
Authority: CN
Inventors: D·达利茨; R·维尔利
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 2003-10-21
Filing date: 2004-10-20
Publication date: 2005-04-27
Also published as: EP1526194A3; EP1526194A2

Abstract

A novel spinning machine, especially ring spinning machine, has a multi-stage sliver drawing unit (13) which is arranged with a pair of feeding roll (37, 37'), a pair of leather plate roll (29, 29') and rear drafting roll, the drafting rolls are biggish lower roll (25) and an opposite upper rolls (26, 27). Setting mechanical beaming element (45) transmitted to enter a triangle area between the two upper rolls (26, 27), so as to gather fiber in the fiber structure better before rotating forcibly the ring spinning machine.

Description

Spinning machine with beaming device

Technical field

The spinning that the present invention relates to spin wherein carries out boundling to the fiber a fluid stream that is right after after distributing, and is rotated then, can be called as the boundling spinning.Particularly advise in the boundling spinning process, using novel features and module.The present invention includes the module and the parts thereof, particularly spare part of a kind of method, spinning machine, this spinning machine and equip element again, no matter whether claimed hereinafter.

Background technology

The boundling spinning, as the part of ring spinning or further develop, constituted those of ordinary skill in the art's rudimentary knowledge now, for example referring to " report of Melliand textiles " (Melliand Textile Reports), 1-2/2003, the 40th page " Uster boundling yarn statistics ".This method is not limited to ring spinning in principle, but this method has only obtained implementing so far in this field.In this case, problem is expense and the effort aspect the optimum product of manufacturing.Therefore there is multiple method of managing to reduce expense and effort to small part.Especially, whether check can produce the possibility of certain boundling effect under the condition that does not produce additional pneumatic boundling power.

The notion of mechanical compaction is known among DE-C-3841346 (ring spinning) and the DE-C-3741431 (funnel spinning) for example in principle at patent documentation.The newly-designed drafting system of these known system requirements.Yet, better simply possibility has been made trial.In Russ P specification No.160973 (publication on February 26th, 1964), found the device that is applicable to this, though the scheme that is suitable for putting into practice details is not provided.

Description of drawings

The present invention is intended to offer help in this respect.Listed principle of the present invention in the claims, be described replenishing based on embodiment hereinafter thus.By introducing, illustrate and explain the example of known pneumatic beaming device.Described example has:

Fig. 1 is the generalized section with spinning machine of the pneumatic beaming device that is used for the boundling fibre structure;

Fig. 2 shows the embodiment according to the described boundling element of DE10051410A;

Fig. 3 is the copy of Fig. 1 among the Russ P specification No.160973;

Fig. 4 is the copy of Fig. 5 in the described Russ P specification;

Fig. 5 is the diagram of the embodiment of the invention, and wherein this embodiment combines Fig. 2 and feature shown in Figure 3 and forms;

Fig. 6 is the copy of Fig. 1 among the US 6434923;

Fig. 7 is the copy of Fig. 2 in the described US Patent specification;

Fig. 8 is the diagram of concrete parts in the embodiment of the invention, and wherein this embodiment combines Fig. 3 and feature shown in Figure 6 and forms;

Fig. 9 is the diagram according to the described embodiment of Fig. 8 as implied above (along the direction of arrow P among Fig. 8), wherein also shows some other element;

Figure 10 is the diagram of holding device that is used for the buncher of Fig. 9;

Figure 11 shows along the cross section of Figure 10 midplane II-II, and wherein Figure 11 a and 11b show other possible optional mode;

Figure 12 is the copy of Fig. 4 among the DE-A-4230316, wherein has to be suitable for diagram of the present invention and to replenish; With

Figure 13 is the copy of Fig. 1 among the DE-A-4230314.

The specific embodiment

Feed arrangement as shown in Figure 1 100 in traditional spinning machine or comprise bar tube, rove tube or boundling bobbin.Fibre structure 120 is transported to the drafting system place from described tube.Under the situation of using rove tube or boundling bobbin, the rove yarn is drawn out from the perimembranous of described bobbin.Described fibre structure, promptly rove yarn or ribbon enter drafting system 140 zones through arrangement for deflecting 130.Described drafting system 140 comprises many to partly being equipped with the roller of apron.Described fibre structure 120 is subjected to more weak stretching between first and second couples of roller 115a and 115b, and be subjected to haling between second pair of roller and follow-up roller are to 115c and stretch and be transported to pincers roller 170 and boundling element 160 places, overall thus draw ratio numerical value can surpass 100.

The fibre structure that is stretched between pincers roller 170 and boundling element 160, is carried out boundling by pincers then on beaming device 180.The described fibre structure that leaves described drafting system 140 demonstrates that width reduces in the boundling process.Can air intlet 110 be set along the cluster area 190 of described device 180 according to DE4426249B, described air intlet is preferably the form of filter screen.

At the place, end of described cluster area locking roller 111 is set then, described locking roller is crushed on the boundling element 160, and the rotation distribution from spinning apparatus 112 opposite with the Flow of Goods and Materials direction is restricted.Suction element 113 is positioned at the inside of boundling element 160, and described suction element is connected with aspirator 114.

Described boundling element 160 is preferably the rotary drum of perforation, and described suction element 113 is presented at and has suction socket in the punched areas.Particularly, the diameter that from Fig. 1, can see described drum obviously greater than feed roller to the diameter of the feed roller among the 115a and the diameter of the middle roller 115b in the drafting system 140.Thus, in order to implement pneumatic boundling according to principle shown in Figure 1, described drafting system 140 must specialized designs be used for this purpose, and must be provided with suitable optional equipment (suction system).

Thread-carrier 150,150 ' between described drafting system 140 and spinning apparatus 112, and in ring spinning apparatus, described thread-carrier upwards defines the air ring according to yarn shown in Figure 1 161.

In addition, the top roller of described drafting system (also can be known as press roller) individually or with other element, for example described suction element 113 carries out laterally moving together.

In the lower area of described spinning apparatus, have the spindle 119 of driver element by rotation, described yarn 161 is wound on the yarn package 201 by the steel traveler on the rings 117, and described steel traveler is fixed on the ring rail 118.The height of described yarn package is determined that by the moving range of ring rail drive unit described ring rail drive unit moves up and down described ring rail 118 on vertical direction as shown in Figure 1.

As seen from Figure 2: described boundling element 160 has the shell surface as all-moving surface 121, and hole 122 enters the inside of described boundling element 160 thus.Described fibre structure 120 is guided between described boundling element 160 and pincers roller 170, and pincers roller 170 rolls on all-moving surface 121 thus.It and all-moving surface (also can be known as the pincers line) 123 have formed a boundling line.

Described pincers roller 170 is in locking roller 111 back, and described locking roller rolls on all-moving surface 121 equally.It and all-moving surface 121 have also formed a contact wire (pincers line) 124.Has predetermined spacing x between described two pincers lines 123 and 124.

In the practice, the top roller of described drafting system 140 and locking roller 111 are loaded by so-called loading arm (not shown in Fig. 1 and 2).In spinning machine, loading arm has been well-known for many years, and an example has been shown among the SKF DE4419125A.

Prior art

According to RU 160973, Fig. 3 shows the drafting system that only has a draw zone.Described leading into device comprise cylinder 1 and press roller 2, and the two forms the gap that each face is closed, behind described gap, described fibre structure 11 must move into draw zone (regional a, Fig. 4).Described fibre structure is comprising cylinder 3 and is pressing the leading between the device of mechanism that involve of roller 4 to be stretched that fiber is drafted by

buncher

10,12,13 thus.Described drafting system turns round under the situation that does not have the fiber guide apron usually.

Another presses roller 5 and cylinder 3 to interact to form pincers line B.Described pressure roller 4 and 5 surface are provided with elastic coating.Buncher 14 is arranged on presses between the roller 4 and 5.When fibre material was discharged from mechanism's tension, fibre material reached the speed of described mechanism and is stretched.Described stretched fibre bundle be wrapped on the cylinder 3 and enter the compressional zone (regional b, Fig. 4), when on buncher 14, when mobile, boundling taking place.At an A, described boundling takes place between the B, described pressure roller contacts with cylinder 3 at this.Described material through boundling passes to described conveyer place, and described conveyer comprises cylinder 3 and presses roller 5.

More than be exactly RU 160973 described full contents.

First embodiment of the present invention-modification embodiment illustrated in fig. 1

Fig. 5 shows the schematic form of first embodiment of the invention, and embodiment wherein illustrated in figures 1 and 2 is suitable for the notion among Fig. 3 and Fig. 4.Because the relatively large spacing X of diameter of cylinder 166 is longer, so the arrangements of elements at transmission roller 3 places can move among Fig. 5 basically unchangeably among Fig. 3; Therefore the buncher between delivery roller 170 and locking roller 111 is still represented with reference marker 14 among Fig. 5.

In embodiment as shown in Figure 5, diagram shows load bearing arm 141.By at this suitable holding device 142 shown in the diagram only, described load bearing arm 141 carries the top roller of roller 115b (referring to Fig. 1), pincers roller 170 and locking roller 111 centerings respectively and presses roller 115.With the holding device shown in the schematic form 143, described arm 141 also carries described buncher 14 and keeps contacting with the surface of cylinder 166 by same.Described cylinder does not have any aspirator 113 or hole 122 (referring to Fig. 2), but forms full tube, and described full tube can be provided with serration (fluting) 226.Pincers roller 170 and locking roller 111 form pincers line 123 and 124 respectively with surface 216.

To arrange based on second of these elements of Fig. 6-9 make an explanation after, hereinafter may designing of described discrete component is described in more detail.

Second example of prior art-known pneumatic boundling technology

As previously mentioned, principle as shown in fig. 1 needs the particular design of drafting system.Therefore, existing ring spinner is difficult to equip required element thereafter.And need the described spinning machine of conversion so that existing spinning machine is suitable for the boundling spinning process.Therefore, developed another kind of optionally system, described system is suitable for follow-up assembling more.At first make an explanation based on Fig. 6 and 7 pairs of described systems.

In Fig. 6 and 7, only show the end sections of drafting system 301 in the spinning machine, particularly ring spinner.Can identify the end sections 302 of carrier in the drafting system 301, described carrier disposes presses roller device 303, as hereinafter described.Described pressure roller device 303 comprises two a pair of pressure rollers 305 and 306, and the holding device 304 that carries described pressure roller 305 and 306.

Contain common axis 307 and 308 respectively in described two each of pressing in the roller 305 and 306, be assigned two on the described common axis 307 and 308 respectively and press roller 309 and 310 or 311 and 312.Described axle 307 and 308 rotatable assemblings, described pressure roller 309,310 and 311,312 is disposed thereon, respectively with described axle 307 and 308 co-rotation.Therefore distribute to each and press 305,306 two yarning positions of roller in pairs, the two is adjacent, makes that the result is under each situation, presses roller device 303 to be assigned to two adjacent yarning positions for one.Several yarning positions and pressure roller device thus are along vertically mutual adjacent setting of spinning machine.

At each yarning position place, fibre structure 15 by described drafting system 301, and draftedly in this case goes out required fineness along direction of transfer A transmission.

On direction of transfer, described drafting system 301 is limited by a pair of drawing rollers, presses the roller 309 or 310 except that being respectively, and described drawing rollers also are included in the bottom roll that is activated 316 that spinning machine rolls in the radial direction.Therefore described bottom roll 316 is assigned to yarning position 13 together with described pressure roller 309, but presses roller 310 to be assigned to yarning position 14.

The draw zone 301 of described drafting system ends at by described drawing rollers formed outlet pincers line 317 places.Therefore, stretched but produced still that spinning is rotated and the fibre structure 19 of the twisting of must spinning then.

Described draw zone 18 is arranged on the downstream of so-called cluster area 20, and after leaving described cluster area, spinning is rotated and at first is added on the established yarn 27.In cluster area 20, being stretched but still producing fibre structure 19 side direction of rotating of spinning is bundled together, and makes not form the spinning triangle after by the conveying pincers line 321 that limits cluster area 20 on throughput direction A.Described conveying pincers line 321 plays the effect of the turning stopper that spinning that antagonism will apply rotates.The yarn 27 that has been shaped be transferred into from described conveying pincers line 321 along throughput direction B described yarn 27 is carried out required twisting the twisting element as ring ingot place, described twisting element is not shown.Described conveying pincers line 321 presses roller 311 or 312 to produce by being pressed onto second on the fixed suction channel 322 respectively, and described fixed suction channel is shaped as the hollow type bin spare under the condition of negative pressure and is for example extending on the spinning machine part on a plurality of yarning positions.Therefore, a plurality of suction channels described spinning machine vertically on adjacent setting.Each suction channel 322 is connected on the unshowned negative pressure source 232 by negative pressure connector 323.

At each

yarning position

13,14 place, described suction channel 322 comprises the suction socket 324 that extends at direction of transfer A substantially, and described suction socket advantageously slight inclination is provided with in direction of transfer A.Under each situation, in suction socket 324 zones, the outline of described suction channel 322 is designed to the slidingsurface of the ventilative conveyer belt 325 of perimembranous.Described conveyer belt 325 will be realized described gas permeability and be designed to webbing that is thin, fine mesh.Described conveyer belt 325 transmits the fibre structure 19 for the treatment of to be undertaken by cluster area 20 boundling, and on described suction channel 322, slide at described conveyer belt under this condition, except that turning to the zone of leaving described suction socket 324, at this place, be tensioned 326 tensionings of element and side direction of described conveyer belt is transmitted.

Carry the shell that the holding device 304 of described paired pressure roller 305 and 306 is designed to seal, axle 307 and 308 passes described shell with sealing means.The result is, the inside of described shell 328 is protected to prevent to produce the fiber flyings.Described shell 328 comprises two parts shell 329 and 330 for this reason, and described two parts shell interconnects by pivot 331.With this understanding, described separation joint 332 is limited in the plane domain that passes axle 307 and 308, makes the described fixed sleeve 333 and 334 of reach 307 and 308 can be clamped between described two parts shell 329 and 330.

Described shell 328 comprises the element that is used for to pressing roller 311,312 transmission driving forces.Because they are irrelevant with the present invention, therefore at this less than description to these elements.Described rotating axle 307 and 308 in the described paired pressure roller 305 and 306 assembles by the bearing in described fixed sleeve 333 and 334.

Be provided with powerful loading spring 341 at loader 302 places, described powerful loading spring forms the spring-loading admittance point 343 of the axle 307 of the first paired pressure roller 305 with another fastening spring 342.This realizes that by the described fixed sleeve 333 of tensioning in position wherein said axle 307 turns assembling.Described spring loaded 344 transfers the pressure to first in addition and presses on the roller 309 and 310, and roller is pressed in described in all cases first drawing-off of pressing roller also to form drafting system 301.

Because each yarning position 13, described pressure roller 311 and 312 under 14 conditions only needs to load the lower basically pressure that contacts, therefore another spring loaded 344 is positioned at loader 302 places, therefore described loader is pressed on the contact-making surface 345 of described shell 328 with less pressure, and basically along direction of transfer A imposed load on the described second paired pressure roller 306.

By Fig. 6 and Fig. 7, can not determine the ratio of the diameter of the diameter of carrying roller 316 and other drafting system roller.But, described roller 316 can be by the standard implementation mode of the drawing rollers of ring spinning drafting system and is formed, and therefore almost completely different, as long as other roller in the described drafting system, promptly the diameter of roller 318 is much smaller than the diameter (Fig. 5) of described drum 166.

The modification of the second embodiment of the present invention-Fig. 6/7 illustrated embodiments

Shown in Fig. 8 and 9 diagrams, the system shown in Fig. 6/7 also can be suitable for the application of the buncher 14 shown in Fig. 3.Described paired pressure roller 305 and 306 itself remains unchanged basically.Yet, press roller 311 and 312 to need equally to contact with bottom roll 316 respectively, because in this embodiment, described transmission roller 311,312 does not need additional drives, therefore described holding device 304 (Fig. 6/7) can be simplified greatly.Spring loaded 341 and 342,344 is held respectively and is admitting described first to work before pressing the axle 307 of roller in pairs as described in shown in Fig. 7/6.Yet owing to be unnecessary at the shell (Fig. 6) that seals described in this embodiment, therefore the load bearing arm 823 that is bent of described sleeve 334 maintains, and described load bearing arm holds described sleeve 333, makes load bearing arm 823 freely to pivot around axle 307.In operating process, continue to carry out this pivoting action, until described roller 311,312 also contact (especially referring to Fig. 8) with cylinder 316.As previously mentioned, pincers line 317 is created in presses between roller 309,310 and the cylinder 316, but pincers line 375 (Fig. 8) is created between roller 311,312 and the common cylinder now.Another the bending load spring 341a that be bonded on 823 places similar to Fig. 7 medi-spring 344 also can be set, in order to produce required contact pressure at pincers line 375 places.In order on roller 316, to produce this contact pressure the second spring 341b is set between spring 341a and described buncher.Can play the effect of vertical and horizontal (radial and axial) guiding of buncher at the spring terminal of the spring 341a at 823 places.

Between pincers line 317 and 375,376 (Fig. 8) are relevant with cylinder 316 on the surface, and described cylinder can be free approaching and be suitable for and buncher 14 interactions.Described buncher 14 as shown in phantom in Figure 8, and in Fig. 9, its position is between roller 309 and 311.Based on Figure 10 the details of possible holding device is considered hereinafter.Under any circumstance, described buncher 14 directly and indirectly carries by carrier and load bearing arm 302 respectively.

The bogey of described buncher

Before explaining example, suitably the requirement of this holding device is considered.Because it is motionless that 14 of described bunchers are maintained fixed on the material direction of transfer, and be permanently connected to the translational surface of cylinder 316, therefore go up and produce wearing and tearing at one and other element (or the two).Certainly, for example made by harder high-abrasive material by buncher, it is possible attempting being limited in the wearing and tearing on the element.But the result who does like this is the wearing and tearing that increased on another element.Therefore, method is that described buncher 14 is decided to be wear-resisting removable parts preferably, and assembles described parts thus, makes the buncher that is easy to be worn remove and be replaced by new buncher from described holding device.

The important point is, described buncher is attached on the surface of described cylinder as far as possible, to keep permanent contact, prevents that fiber is between buncher 14 and cylinder 316 " slip ".Therefore, described holding device must or design and makes it can apply contact pressure on the direction of cylinder 316, or allows at least to apply this power by other device.

Because described pressure roller must carry out grinding frequently, make all have cylindrical surface in all cases, so buncher 14 can not keep pressing roller 309,311 or 310,312 to contact with two couple who distributes to it respectively forever.Therefore, the spacing between the described pressure surface of roller can change in operating process.Yet as the reason mentioned basically, described buncher should " takeofing " around at the edge, certainly also should be not forward and " inclination " backward.Therefore, described holding device should provide firm and guiding reliably in the radial direction, and preferred and described cylinder 316 is a predetermined angle setting.

Therefore, described buncher can keep with to distribute to its pressure roller contactless, or contacts with specific pressure roller.According to principle listed among the DE 3841346, described buncher is more suitable for contacting with pressure roller 309 or 310 respectively (at the feed side of cluster area).But, therefore in fact more advantageously, keep described buncher 14 to contact with pressing roller 311 or 312 respectively because this device fundamentally is different with the described device of old German patent specification.As possible, described holding device should allow various permissible devices.

According to Figure 10, the example of possible holding device comprises the york piece 380 with spring, be installed in the drafting system before, described york piece is arc, and in the middle of fastener (for example screw) 381 was set at, consequently described york piece can be fastened on the arm 823 (Fig. 8).Described york piece 380 has

end part

382 and 383 respectively, and described in all cases end part is received within respectively in the

independent admittance sleeve

384 and 385, and described sleeve is shaped or is fastened to front away from the boundling body 386,387 of described cylinder 316.Described in all cases end part 382,383 for example can with described sleeve 384,385 form buckle connects, and/or another locking member (not shown) can be set, described locking member has the effect of the form fit of formation in all cases, removably connect but preferably between end part 382,383 and sleeve 384,385, form.

When described arm 823 on arrangements of operations (Fig. 8) direction around axle 307 when pivoting, the contact surface 388,389 of described boundling body 386,387 contacts with drum surface pressing roller 311,312 to contact before with cylinder 316.If described arm 823 moves further into operating position, the both wings of described spring york piece 380 produce deformation and the result is tensioned, and make described both wings be pressed on the contact surface 388,389, in all cases, lean on the surface of cylinder 316.

By means of spring holding device such as york piece 380, described arm 823 must be loaded on the operating position direction, although make york piece 380 tensionings, presses roller 311,312 to keep firmly contacting with cylinder 316.Can use suitable charger (not shown), wherein various devices (pneumatic, magnetic force and mechanical device) are that those of ordinary skill in the art is known for this reason.Described arm 823 must be loaded, and makes pressing the required contact pressure of generation between roller and the cylinder 316.Under certain condition, it is suitable the loading of the loading of pressing roller 311,312 and buncher 14 being separated.For example can use the spring device that between buncher 14 and load bearing arm 302, directly works that described buncher 14 is loaded.

Described buncher not necessarily must separate with described holding device.For example described york piece 380 can be integrally formed with buncher, makes must be changed simultaneously the module that constitutes by york piece and buncher.

In conjunction with Figure 13 other modification of described holding device is described hereinafter.

The design of boundling body

From the description of described holding device, can learn different requirements.Described

boundling body

386 or 387 is mainly made by pottery, plastics or metal respectively, if suitable, also can be made by alloy or composite or two or more components.Yet described buncher also can be formed by sintered body.Described entity for example can be by casting mold, wherein reserved unit for

example sleeve

384 or 385 can be cast in

wherein.Entity

386 or 387 for example can be respectively equipped with coating with pressing the contacted side surface of roller place on the

contact surface

388 or 389 and/or in operating process at least one particular surface.

Entity

386 or 387 design must be considered the formation of sealed groove 390 (Figure 11).The inner face 391 (Figure 10) that limits this groove shapes together forms the boundling passage with cylinder 316 surfaces.Described groove roughly has the degree of lip-rounding at feed end, has the relatively large width E (Figure 11) and the width e of relative narrower at the port of export.Select described width E, make the yarn that comes out from main cluster area enter the boundling passage reliably, this width can be for example 5-10 millimeter, becomes with material performance to be processed.Select described width e, make the fibre structure for the treatment of boundling can be twisted the yarn downstream that enters pressure roller 311 or 312 respectively, and do not form so-called spinning triangle basically.For this reason, for example may be selected to be the 1-3 millimeter according to the described width e of required number of yarns.

The realization of the boundling of this higher degree do not require in all cases, yet even may neither be needed.Therefore, described groove can have the outlet of broad, and for example width e is in the scope of 3-5 millimeter, and described width is the function of fibre structure width in the main drawing area.Even may be more advantageously, when changing batch, also change described buncher simultaneously, be suitable for the groove of new material with formation.

A part of boundling effect is also played in the cross section of described groove, and if is necessary also to be fit to requirement.Figure 11,11a shows three kinds of different cross sections with 11b.In Figure 11, groove 390 attenuates to the port of export steadily from feed end.In the modification shown in Figure 11 a, described groove has the exit portion that has substantially parallel side surface, and in the modification shown in Figure 11 b, described boundling work is to implement in short feeding part 392, referring to transmission direction, before the mid point of described passage, make described fiber subsequently by directed parallel.

Obviously, guarantee that the contact between the buncher 14 and cylinder 316 is a particular importance in the groove feeding part, wherein the risk that " skids off " at the buncher yarn under working in the groove feeding part is maximum.Described guide inner surface 390 can be provided with coating, to increase ABRASION RESISTANCE (comparing with matrix material) and/or to reduce the tendency that (for example dust) adheres to.

Described boundling body also can be provided with " lip ", contacts with pressing roller at " lip " described in the operating process.This modification is used for described boundling body 387 so that schematic form is shown in Figure 10, wherein shows at the described lip 393 to the charging aperture place of groove 390.Described lip does not need to extend to continuously the lower limb of described entity 387, this be since only the mid portion of described lip (approximately being upper edge) at described groove can effectively contact with described pressure roller.

Transmit the design of roller

In principle, described transmission roller 316 must be realized its function in drafting system 302 as previously mentioned.Preferably, the described surface of roller of current design makes described boundling body can therefore keep Continuous Contact basically.

As the part of prior art, described roller is provided with the so-called groove described in DE-A-4230316.Figure 12 shows an example in this German patent specification, its middle roller 316 has the groove 422 that is arranged essentially parallel to described roller axis extension, wherein said radially-outer surface 423 is a circular concentric, smooth and on the perimembranous direction, be longer than indenture 424 (German patent specification, claim 1) between the two.

Whether described surperficial 423 be not major part of the present invention than indenture 424 length.Another kind of optional mode has been shown among the EP-A-359277.Yet described boundling body should be able to " move " on described groove, and because fiber might be slipped between the two, therefore should avoid as far as possible producing the slit between described boundling body and described surface of roller.Therefore described indenture 424 should be by the cross-over connection of described boundling body.

Figure 10 also shows the little modification of difference that can embody advantage of the present invention.Compare with described German patent specification, the right side of vertical plane V in Figure 10, described groove remains unchanged; This groove has tangible edge 425.In the left side of described vertical plane V, 426 zones, edge " disconnection "; Promptly has perceptible rounding.Yet this rounding only needs on leading edge, referring to direction of transfer.It helps to make the " RUN " of buncher 14 on described groove level and smooth.

Described roller not necessarily all will be provided with groove in all cases.Can not smooth surface generally, but can not get rid of smooth surface.But described surface of roller can be suitable for carrying out subsequent treatment, for example plasma spray coating or blasting treatment.

Buncher in the main drawing area

Device as shown in Figure 3 has buncher 10 in cluster area.The modern drafting system of ring spinner before the drafting system outlet, has a pair of apron in draw zone, described apron is set to guarantee that the guiding yarn is as far as the approaching as far as possible position that stops the pincers line of described cluster area.Yet buncher might be arranged between the described egress line and the pincers line of described transmission roller to apron, as described in DE-A-4230314.

As an example, referring to Figure 13, wherein buncher 526 is arranged in " residual triangle zone ", and is intended to be fixed on the described drafting system at this, make described drafting system to be opened and closed, and described buncher can not drop out.Described buncher 526 is provided with branch pole 531 in the front, described minute pole is at right angles crooked substantially, and is directed to bearing and carries element 528 places, carries on the element the rotatable top elasticity roller 515 that is equipped with at described bearing.End part 532 parts of described bar 531 are around described axle supporting member 528, and can move axially (not shown among Figure 13) within the specific limits.Described buncher 526 therefore can be forward and the axis that is parallel to roller 515 backward move, make described fibre structure (not shown) can follow common laterally moving concerning this drafting system.

Such buncher can be used in drafting system shown in Figure 5 141 or the drafting system 302 shown in Figure 8.Can consider in described cluster area, carry out describedly laterally to move by different measure, described measure for example:

-by increasing width E (Figure 11), perhaps

-on its holding device, in limited range, move freely (not shown) by described buncher.

If can not widen charging aperture or buncher can not have required moving freely property, described laterally the moving at buncher 526 places can be suppressed.

Loading arm or pressure roller module

The partial function of described loader or loading arm is: it can move between operating position and position of readiness.When being in operating position,, be positioned at them with respect to bottom roll certain location place separately by all elements, particularly top roller that described arm carries.When being in position of readiness, all elements that carried by described arm must firmly and reliably be carried, and particularly make when load bearing arm moves into operating position, and they can be accepted automatically with respect to bottom roll certain location separately.This function also must guarantee to be used for according to additional pressure roller of the present invention and yarn guiding body.

By Fig. 6 and 7 as seen, the described shell 328 that has paired part 305 and 306 respectively forms an assembly, and described assembly can be counted as and install and change relevant unit or module.This notion has the advantage that also can be transmitted to according to the embodiment shown in Fig. 5 and/or Fig. 8/9.

Comprise loader or loading arm according to assembly shown in Figure 5, described loader or loading arm can be regarded as unit or module.The existing arm in the existing spinning machine can be replaced in this unit, also will need thus to change traditional transmission roller to finish this transformation.Comprise paired roller 305,306 according to assembly shown in Figure 8, buncher 14 (with loader together) and described unit is connected to suspension apparatus on the loader 302.Described discrete component also can be converted into a unit by the make loader of working as similar to the shell 328 among Fig. 6, and this loader can be connected on the loading arm thus.The energy that produces contact pressure generates element and needn't count with this unit; They can be separated, between the element of described arm and imposed load.

The preferred distance of selecting between the described pincers line makes described distance corresponding to the 0.5-1.5 of the average fiber length of pending processing fiber doubly.

Preferred described single unit system makes yarn can not be drawing on the right pressure roller of described transmission roller.

The present invention relates to the spinning machine with multistage drafting device as described in the preamble as claim 15 equally.

As described in DE-A-4426278, this spinning machine with multistage drafting device is known.According to this point, carry out the boundling step by suction roller and the opposed roller that connects ring spinning apparatus.In the zone of carrying out the boundling process, one screen cloth is set in outer surface a distance of described suction roller.If use lateral means, the width that described suction district has in the part of beginning is greater than infeed stroke.

After this, described suction district is tapered along transmission direction.The front also should be mentioned that, between the pincers mouth slit between the end of the apron in described dominant draft device and the transmission roller of drafting system, the mechanical compaction device be used to make described fibre structure (referring to, for example: DE-A-4132919; DE-A-4141237) bunchy.Because friction between the thread-guide element of monomer fiber and buncher can make and produce unevenly in the yarn combination thing, therefore uses the improvement of the yarn qualities of this mechanical compaction device to be restricted.Reason for this reason, the buncher at place, main drawing area end is not the optimum device that significantly improves yarn qualities, and aforementioned scheme with suction roller and deflection screen cloth is employed.

The present invention is based on the spun yarn device that improves aforementioned type, make and use simpler method to obtain equal yarn qualities.

By this problem of the device solves with the technical characterictic in the claim 15.

Yet, surprisingly,, but in the boundling step of described drafting system, between described transmission roller and pincers roller, using conventional bottom roll and mechanical compaction element if need not described suction roller, the equivalence that can obtain yarn qualities improves.

Can from the explanation of other dependent claims and back, draw other advantage of the present invention, wherein the present invention is described in more detail based on the embodiment in the diagram accompanying drawing, wherein:

Fig. 1 a is the survey view of the specific yarning position of ring spinner;

Fig. 2 a is the front view of same yarning position;

Fig. 3 a is the diagrammatic view of the drafting system of described yarning position;

Fig. 4 a is the perspective view of boundling element;

Fig. 5 a is the sectional view of same boundling element;

Fig. 6 a shows the part of the modification of described boundling element;

In the accompanying drawings, components identical is used identical reference marker, and unless offer some clarification on, first explanation is applicable to institute's drawings attached.

According to Fig. 1 a and 2a, flyer spindle slub 11 from the rove tube 12 that is arranged in the top is introduced in the drafting system 13 that is formed by three cylinders by deflecting element 28, described drafting system has elementary draw zone 23 and the main drawing area 24 that comprises a pair of

feed roller

37,37 '.The described roller 29,29 ' that begins to locate at the terminal of elementary draw zone 23 with at main drawing area 24 in known manner with apron 30,30 ' matches, as shown in the figure, described apron extends into leading in the slit of a pair of drawing

rollers

25,26.

The bottom roll of described drawing rollers centering is designed to have the suction roller 25 of the perforation of rotating shaft 36, its diameter is obviously greater than the diameter of other roller, and it with lead the corresponding last pincers mouth slit 14 that roller 26 has formed described drafting system 13 together of stretching.In the present invention, described bottom roll 25 is designed to cylinder level and smooth or that have groove.

In back, described drawing-off slit, the fibre structure of transmission by described drafting system 13 is directed along the passage portion 15 of revolving the bending of corresponding roller 27 as far as resistance on suction roller 25 perimembranous, and described resistance is revolved corresponding roller and together formed the resistance that is used for fibre structure with suction roller 25 and revolve slit 16.

Extend on the whole perimembranous as described in the perforation 35 of described suction roller 25 is shown in as Fig. 2 a, but only on the less width of the perisporium of described suction roller 25, extend.Even though any of consideration fibre bundle 22 laterally moves, this width is also enough big, make described fibre bundle 22 contact described perforation 35 forever.

In suction roller 25 inboards are concentric screens 32, described screen cloth interrupts in the zone of described channel part 15, arrange described screen cloth, make because the described screen cloth 32 inner negative pressure that keep, therefore produce air-flow perforation 35 by described suction roller 25 from outside to inside along the direction of arrow 34.

Revolve 16 back, slit in described resistance, described fibre structure transmits under the effect of rotation and enters in traditional ring spinning apparatus 17, described ring spinning apparatus is equipped with ring rail 18, rings 19, steel traveler 20, step rail 38 and spindle 21, and in ring spinning apparatus, ring spinning yarn 39 comes out by the fibre bundle 22 through boundling that revolves from described resistance that slit 16 comes out is manufactured.

Total draft amount in the described drafting system 13 is preferably 25-80, particularly can be up to 100, thus the drawing-off amount in elementary draw zone 23 only be common limiting value 1.1-1.3 doubly.

In Fig. 3 a, another shows described multistage drafting device 13, wherein according to the present invention, the bottom roll 25 that setting has smooth barrel surface replaces the suction rollers, and in delta-shaped region between roller or the pincers roller 27 is revolved in drawing rollers 26 and resistance mechanical compaction element 45 is set and replaces described deflection screen cloth 40.Described pincers roller 27 is provided with the brake apparatus (not shown), makes described pincers roller running be slower than described drawing rollers 26.In practice, the rotary speed of described drawing rollers 26 is greater than the rotary speed of described bottom roll 25, makes the slippage that has 0.5%-2.5%, the stretching or the drawing-off that consequently produce fibre structure.The slippage of described pincers roller 27 reaches about 0.5%-3%.Therefore, produce so-called lax in the cluster area between drawing rollers 28 and pincers roller 27, the result is owing to there is mechanical compaction element 45, can produce the pure mechanical bond of single fiber outstanding in the fibre structure, and the filoplume of the yarn that produces in ring spinning process subsequently seldom.

The perspective view of boundling element 45 has been shown among Fig. 4 a, the sectional view of A-A along the line among Fig. 4 has been shown among Fig. 5 a, and has shown the conical recess 46 waisting shapes that have on lower sides 47, described waisting shape is positioned on the bottom roll 28 (referring to Fig. 3 a).Described mechanical compaction element 45 is preferably made by suitable metal, plastics or pottery, wherein designs described surface, makes that fiber can not be attached to it, promptly keeps not having fiber.In particularly preferred embodiment, described boundling element 45 is made by magnetic metal, so that described boundling element 45 is maintained at suitable position between drawing rollers 26 and the pincers roller 27.On the other hand, also the contact compression spring can be set for this reason.In addition, described drawing rollers and pincers roller 27 are fixed on the total loader at loading arm 49 places, make when total pressure changes, and described two rollers 26 are consistent with 27 the pressure ratio that contacts.Yet also possible is: pincers roller 27 is fixed on the loading arm 49 by additional lever arm (not shown at this), the feasible contact pressure that can regulate pincers roller 27 separately.The contact pressure of pincers roller 27 should be at least 3-4kg, usually 15 and 20kg between.Cone angle is between 30 ° and 120 °.

For making the described boundling element 45 and the surface of drawing rollers 26 and pincers roller 27 have minimum the contact, but described

surperficial

50 and 51 slightly raised contact with drawing rollers 26 or pincers roller 27 respectively, perhaps be provided with little heaving or rib.In addition, described bigger bottom roll 25 can be provided with fishbone groove or axial linear type groove, so that there is not it to be moved away the axial force of its axial location on described boundling element 45.

The another kind of modification of described conical recess 46 has been shown in Fig. 6 a, wherein has been provided with the parts 52 of half-cone shape, followed semi-cylindrical shaped parts 53 thereafter.In this case, the diameter D of described parts 53 between 0.3 and 5.0 millimeter, and and the spacing of described lower limb 54 between 0 and 6 millimeter.Self-explantory for the person of ordinary skill of the art is that described conical recess not only can be designed to circle, but also can be designed to ellipse, rectangle or polygon.

Described

roller

26 and 27 axial spacing are preferably the 25-46 millimeter.

Fig. 6 b shows the amplifier section in the recess 46 axis F zones, and described axis is parallel to the flow direction by the fibre structure material of described recess.Described axis F needn't be geometric symmetry axis, the boundary between described recess 46 of described geometirc graphical presentation and the boundling element 45.If by described boundling element 45, oneself obtains meridian hatching M towards the interface of the recess 46 of described boundling element 45 to section, and forms arc hatching Q transverse to the section of axis F in the plane at axis F place.Article two, hatching, meridian hatching M and horizontal section line Q can be circle, ellipse or polygon.Self-explantory is that described conical recess 46 does not need the half section for circular cone; In Fig. 6 b, suppose that the described horizontal section line Q by described recess 46 not only can form half elliptic, but also can on the axis of symmetry S of ellipse, extend, make the maximum elongation of described recess 46 not in the confining surface of the described boundling element 45 of bottom roll 25, but in the zone of axis S.

Claims

1, have the drafting system (140,301) of drawing-off cylinder (316) and loading arm (141,302), it is characterized in that,

Press roller to form pincers line (123,124,317 with drawing-off cylinder (316) respectively for two, 375), wherein said pincers line (123,124,317,375) in the Flow of Goods and Materials direction, have preferred specific spaced slot, and yarn guiding body is set at pincers line (123,124,317,375) between and especially with cylinder (1,3,166) contact, and with cylinder (1,3,316) surface (216) has formed tapered fiber guide passage on the Flow of Goods and Materials direction together.

2, drafting system according to claim 1 (140,301) is characterized in that, described loading arm (141,302) comprises conveyer, and described conveyer transmits described pressure roller (2,4,5,115,309,310,311,312), make that conveyer is in desired location with respect to drawing-off cylinder (316) when described loading arm (41,302) moves into its operating position.

3, drafting system according to claim 1 and 2 (140,301) is characterized in that the holding device (142,304) at the described yarn guiding body of the middle guiding of drafting system (140,301).

4, drafting system according to claim 3 (140,301) is characterized in that, described yarn guiding body is subjected to the guiding of its holding device (142,304), make the particular surface of described yarn guiding body with in operating process the transmission fiber cylinder (1,3,166) surface contacts.

According to claim 3 or 4 described drafting systems (140,301), it is characterized in that 5, described conveyer and holding device (142,304) have together formed a public removable module.

6, according to each described drafting system (140,301) among the claim 1-5, it is characterized in that, charger is set in order to described yarn guiding body is pressed onto on the described drum surface (216).

7, according to each described drafting system (140,301) among the claim 1-5, it is characterized in that, design the surface (216) of described cylinder (1,3,166), make that at least in the zone of carrying out boundling, described yarn guiding body keeps and described drum surface (216) Continuous Contact basically.

According to each described drafting system (140,301) in the aforementioned claim, it is characterized in that 8, described yarn guiding body can move freely along the axial direction of described cylinder (1,3,166) in restricted portion.

9, according to each described drafting system (140,301) among the claim 1-8, it is characterized in that, with described cylinder (1,3,166) move axially the described yarn guiding body of the opposite guiding of direction.

10, according to each described drafting system (140,301) in the aforementioned claim, it is characterized in that, buncher (10,526) is set in main drawing area (24).

11, loading arm (141,823), it is characterized in that a pair of pressure roller and yarn guiding body, described pressure roller and yarn guiding body are by loading arm (141,823) carry, make described two rollers to contact with the cylinder (316) of drafting system (140,301), in order to described cylinder (1,3,166) form two pincers points, described pincers point demonstrates along the specific distance of Flow of Goods and Materials direction, wherein, described yarn guiding body contacts with cylinder between the described pincers point, and with described cylinder (1,3,166) surface (216) has formed the fiber guide passage together, and described fiber guide passage is tapered along the direction of Flow of Goods and Materials.

12, the loading arm (141 that is used for according to claim 11,823) module in, it is characterized in that conveyer, described conveyer had both had and had been used for the right suspension apparatus of described pressure roller (4,5), also had the recess of described yarn guiding body, wherein said conveyer is provided with jockey, in order to described conveyer is connected on the described arm (141,823), make described module can be replaced by a unit.

13, the yarn guiding body that has guiding surface, described yarn guiding body are designed to produce interaction with the all-moving surface of drafting system (140,131), in order to form the boundling passage, it is characterized in that described yarn guiding body is provided with the fastener that is used to connect described yarn guiding body and load bearing arm (141,823).

14, spinning machine, especially but be not only ring spinner, it is characterized in that, according to each described drafting system (140 among the claim 1-10,301), loading arm according to claim 11 (141,823), module according to claim 12, and/or yarn guiding body according to claim 13.

15, spinning machine, especially the ring spinner that has multistage drafting device (13), described spinning machine has a pair of feed roller (37,37 '), a pair of apron roller (29,29 ') and the drawing rollers of back, described drawing rollers have bigger bottom roll (25) and position top roller (26 thereon, 27), it is characterized in that, setting enters described two top rollers (26, the mechanical compaction element (45) of the delta-shaped region 27), described boundling element (45) has the conical recess (46) in waisting shape and the perimeter regions on described bottom roll (47), and described conical recess (46) has a conical portion section (52) and a semicircular feature in its back (53).

16, spinning machine according to claim 15 is characterized in that, the cone angle (α) of described conical recess (46) is between 30 ° and 120 °.

17, according to each described spinning machine in the aforementioned claim, it is characterized in that the recess (46) in the described boundling element (45), described recess forms the guiding piece that will carry out the fibre structure of boundling, described recess designs at least on the inlet side of described fibre structure, make longitudinally to or have part profile transverse to the flow direction of the described fibre material part by described boundling element towards the defining surface of the recess (46) of described boundling element (45) yarn guiding body, described part profile is an oval or circular part or is generally and therebetween straight line portion or sweep ellipse or polygon drawing-off line (M, part Q).

According to each described spinning machine among the claim 15-17, it is characterized in that 18, the cylindrical surface of described bottom roll (25) is provided with axial linear type groove or is provided with herringbone grooves, perhaps is designed to smooth cylinder.

19, according to each described spinning machine among the claim 15-18, it is characterized in that, described boundling element (45) has the rib of many protrusions or heaves portion, described rib or the portion of heaving are set at and transmit on roller (26) and/or the contacted side of pincers roller (27), contact or point-to-point contact in order to allow forming line with drawing rollers (26) and/or pincers roller (27).

According to each described spinning machine among the claim 15-19, it is characterized in that 20, described boundling element (45) has the side direction guiding piece, described guiding piece is intended to described boundling element is remained on the axial direction of described top roller (26,27).

According to each described spinning machine among the claim 15-20, it is characterized in that 21, described boundling element (45) is made by magnetic material to small part, be used to make described boundling element to remain on the place, fixed position with respect to described top roller (26,27).

According to each described spinning machine among the claim 15-21, it is characterized in that 22, described contact compression spring remains on its pre-position with described boundling element (45).

23, according to each described spinning machine among the claim 15-22, it is characterized in that, select the surface and the material of described boundling element (45), make and do not adhere to any fiber, particularly plastics on the described surface, thereby avoid the performance of static discharge.

24, spinning machine according to claim 15 is characterized in that, described top roller is drawing rollers (26) and pincers roller (27), and described top roller is pressed against on the bottom roll (25) by the loader (48) that is arranged on described lead arm (49) and locates

25, spinning machine according to claim 24 is characterized in that, described at least pincers roller (27) is pressed against on the described bottom roll (25), and contact pressure is 1-20Kg.

According to each described spinning machine in the aforementioned claim, it is characterized in that 26, the axial spacing between the described roller (26 and 27) is between 15 and 46 millimeters.