DE102010033579A1 - Apparatus for winding synthetic yarns in a melt spinning process, has godet unit and two mirror-symmetrically arranged indexed winding stations, where godet unit has guide shell oriented transverse to winding spindles - Google Patents

Abstract

The synthetic yarn winding apparatus has a godet unit (11) and two mirror-symmetrically arranged indexed winding stations (1.1,1.2), where the godet unit has a guide shell (12) oriented transverse to winding spindles (4.1,4.2). Yarn guides are formed by a set of rotatable guide rollers (18). Two parallel guiding grooves (17.1,17.2) are held in a central plane between the indexed winding stations.

Description

The invention relates to a device for winding synthetic threads according to the preamble of claim 1.

A generic device for winding synthetic threads is for example from the DE 103 93 262 T5 known.

In the known device, two mirror-symmetrically arranged Aufspulstationen are provided, which are arranged below a godet unit and each having a plurality of opposite winding points along parallel-aligned winding spindles. The Aufspulstationen be fed two sets of threads, which are guided together on the godet unit and are guided by two groups of yarn guides between the godet unit and the winding stations of Aufspulstationen. To be able to wind all threads of the group of threads as possible under the same conditions to coils, the thread tension differences caused by thread guides and deflections are kept as low as possible. Both in the distribution of the threads on the winding points of one of the Aufspulstationen and in the distribution of the yarn sheets between Aufspulstationen thus larger deflections are to be avoided in particular on the outer threads. A further disadvantage of the device known in the prior art is that the thread guides are formed during the winding of the threads by stationary guide elements, which produce a continuous thread friction on the threads.

Basically, however, devices for winding synthetic threads are known in the prior art, in which only one group of threads is wound up in a winding station with multiple winding positions simultaneously to form coils. So goes for example from the EP 1 594 785 B1 a device for winding synthetic threads out, in which the distribution of the threads within the winding points of a winding station is not carried out by a spread after the expiry of a godet unit but by a deflection by 90 ° on a yarn guide. In this case, the contact friction generated by the large wrap angle can be reduced by replacing the thread guides with guide rollers. In this case, however, the problem arises that the drive energy must be generated to rotate the guide roller alone on the respective guided thread when no electric drives are available. In the event that the thread generates too little drive energy, slippage occurs between the thread and the thread guide, resulting in higher thread tension values again.

It is therefore an object of the invention to provide a device for winding synthetic yarns of the generic type, in which a plurality of yarn sheets are as thread-gentle as possible between a godet unit and the winding stations of the two Aufspulstationen feasible.

Another object of the invention is to obtain a compact arrangement of the two Aufspulstationen and the associated yarn guide for dividing the yarn sheets.

This object is achieved in that the godet unit has at least one to the winding spindles transversely oriented guide casing and that the thread guide is formed by a group of rotatable guide rollers, each containing two parallel circumferential guide grooves and which are held in a median plane between the Aufspulstationen.

Advantageous developments of the invention are defined by the features and feature combinations of the subclaims.

The invention is characterized in that several threads can be performed simultaneously on a rotatable guide roller. Thus, in particular with non-driven guide rollers, the drive energy can be introduced into the guide roller over several threads. In that regard, the device according to the invention is also preferably particularly suitable for fine titers.

In order to obtain the lowest possible yarn tension in the threads, the development of the invention is preferably used, in which the guide rollers are freely rotatably mounted on one of the respective guide roller associated bearing, wherein the axes of the guide rollers are aligned parallel to the guide casing of the godet unit. Thus, the threads can be fed to the guide grooves of the guide rollers substantially without deflection directly after expiration of the godet unit substantially. The guide grooves are preferably aligned orthogonal to the axes of the guide rollers. In principle, however, it is also possible to guide the guide grooves with an inclination on the axes, so that the yarn feed and the thread drain lie in different planes.

The bearings of the guide rollers are preferably formed by an air bearing, which require very low-friction guides and thus low drive torques of the guide rollers.

For handling, in particular at the start of the process, the device according to the invention is preferably developed in such a way that the bearing points a common carrier are arranged and that the carrier is held in a guide device so movable that the guide rollers between an operating position and a threading position are feasible. Thus, at the beginning of the process, the threads, which are usually guided by a suction gun, can be divided after running out of the godet unit and threaded into the guide grooves of the guide rollers.

Depending on the constructive nature of the winding stations, the guide grooves per guide roller can be arranged on a roller body, so that the yarn sheets are distributed to each other at a short distance to the individual winding locations. In the event that the Aufspulstationen are formed by separate winding machines, the development is preferably carried out, in which the guide grooves per guide roller are formed on two separate roller body. This allows larger distances between the yarn sheets are realized.

With such a design of the guide roller, the roller bodies are preferably interconnected by an axle, wherein the bearing point is formed between the roller body in an axle center.

So that when winding and traversing the threads they remain safely guided in the guide groove of the guide rollers, it should be ensured that at the end of the threads from the guide grooves no too large deflections in the subsequent guide elements, which in the high dynamics of the traversing movement of the thread to unwanted sliding lines could lead to the guide rollers. In that regard, the development of the invention has proven particularly useful in which the guide rollers are each arranged between opposite winding positions of the two Aufspulstationen that spans between the guide and the associated traversing units each an oblique traverse plane, with a roller plane an angle <15 ° forms.

Preferably, the angle between the traversing planes and the roller planes at the two Aufspulstationen to guide the two sets of yarns are the same size.

Since such a device is used to wind a plurality of threads, which may comprise 10, 12 or even 16 threads per thread group, the development of the invention offers a particularly user-friendly solution, in which the guide rollers each assigned a Einfädelabdeckung with a threading per guide groove is. Thus, the splitting and separating the threads for applying and threading in the guide grooves is simplified and possible by an operator without larger auxiliary equipment.

The device according to the invention will be described in more detail below with reference to an embodiment with reference to the accompanying figures.

They show:

1 schematically a front view of the embodiment of the device according to the invention

2 schematically a side view of the embodiment of 1

3 schematically a plan view of the embodiment of 1

4 schematically a section of the top view of the embodiment according to 3 for displaying the guide rollers

5 schematically a front view of adjacent winding points of two Aufspulstationen

6 schematically a plan view of another embodiment of the device according to the invention

7 schematically a plan view of the guide rollers with a threading

In the 1 . 2 and 3 a first embodiment of the device according to the invention is shown in different views. 1 shows the embodiment in a front view, 2 in a side view and 3 in a top view. Unless expressly related to any of the figures, the following description applies to all figures.

The exemplary embodiment has two mirror-symmetrically arranged winding stations 1.1 and 1.2 on, which are arranged side by side with a short distance. The winding stations 1.1 and 1.2 are formed in this embodiment by two winding machines, which are independently drivable and controllable. In that regard, each of the Aufspulstationen 1.1 and 1.2 a machine frame 2.1 and 2.2 on, in which the components and drives are held for winding a plurality of threads.

The winding stations 1.1 and 1.2 are identical, so that initially only the structure of the winding station 1.1 is described.

The winding station 1.1 has one in the machine frame 2.1 rotatably mounted winding turret 3.1 on. The winding turret carries two winding spindles 4.1 and 5.1 , Which are cantilevered rotatably and along several juxtaposed winding locations 8.1 extend to hold in each of the winding points wound on the circumference of the winding spindle coil. The winding spindles 4.1 and 5.1 by turning the winding turret 3.1 alternately guided in an operating area and a change area. In addition, the winding spindles can be 4.1 and 5.1 during winding by the winding turret 3.1 lead such that a continuous coil growth during the winding of the threads is possible.

The winding spindles 4.1 and 5.1 are the spindle drives 14.1 and 15.1 assigned. The winding turret 3.1 is about the turret drive 16.1 driven.

The winding spindles act in the operating area 3.1 respectively. 4.1 with a rotatably mounted pressure roller 6.1 together, during the winding of the threads on the surfaces of the coils 10.1 is applied. The pressure roller 6.1 is in the yarn path a traversing device 7.1 upstream, to each winding point 8.1 each having a traversing unit, in which one of the winding point 8.1 fed yarn within a traverse stroke back and forth. Thus, in every winding position 8.1 Coil wound.

In this embodiment, the winding station 1.1 a total of four winding positions 8.1 in which the thread group consisting of four threads 9.1 to wash 10.1 be wrapped. The number of winding positions 8.1 is exemplary. Thus, even 10 or even more winding positions can be arranged in one of the Aufspulstationen.

The winding station 1.2 is identical to the rewind station 1.1 constructed, the components mirror-symmetrical in the machine frame 2.2 are held. The components of the winding station 1.2 are provided with identical reference numerals, wherein only the second code of the reference contains the reference to the winding station. A further description of the components of Aufspulstationen 1.2 is thus dispensable at this point.

As from the representations of 1 to 3 shows, is the Aufspulstationen 1.1 and 1.2 in the threadline a godet unit 11 upstream. The galette unit 11 is above the rewind stations 1.1 and 1.2 in the region of the ends of the winding spindle 4.1 and 4.2 arranged. The galette unit 11 has in this embodiment a driven guide sheath 12 up, with a godet drive 13 is coupled. The guiding sheath 12 the godet unit 11 is transverse to the winding spindles 4.1 and 4.2 the Aufspulstationen 1.1 and 1.2 aligned. On the guide sheath 12 become the threads of two sets of threads 9.1 and 9.2 parallel side by side and for distribution on the winding stations 8.1 and 8.2 diverted.

Between the godet unit 11 and the rewind stations 1.1 and 1.2 is a group of leadership roles 18 arranged on a common carrier 21 are held. The number of guide rollers 18 is identical to the number of winding stations 8.1 , wherein the opposite winding points 8.1 and 8.2 the Aufspulstationen 1.1 and 1.2 one each of the guide rollers 18 assigned. The leadership roles 18 are for this purpose in a middle plane 23 between the rewind stations 1.1 and 1.2 arranged.

To explain the structure of the guide rollers 18 In addition to the 1 . 2 and 3 also related to the 4 taken. In the 4 is an enlarged section of the top view of the guide rollers 18 shown. In that regard, in addition to the following 4 Referenced.

The leadership roles 18 are all identically constructed and each have two with a short distance trained each other roller body 20.1 and 20.2 on. At the periphery of the reel body 20.1 and 20.2 is in each case a circumferential guide groove 17.1 and 17.2 educated. The reel body 20.1 and 20.2 are by an axis 19 rotatably connected to each other, the axis 19 in a middle area between the reel bodies 20.1 and 20.2 through a depository 30 is rotatably mounted. The depository 30 is on a roll holder 26 trained firmly with the carrier 21 is coupled. The axis 19 is in the depository 30 preferably freely rotatably supported by an air bearing. Here is the axis 19 preferably parallel to the guide casing 12 the godet unit 11 aligned, so that the threads in straight run between the guide sheath 12 and the guide grooves 17.1 and 17.2 are feasible.

Each one in the winding stations 8.1 and 8.2 assigned leadership role 18 thus has per winding point 8.1 and 8.2 a guide groove 17.1 and 17.2 on. So are the guide grooves 17.1 the winding stations 8.1 and the guide grooves 17.2 the winding stations 8.2 assigned.

At the in 1 to 3 illustrated embodiment, the guide rollers 18 shown in an operating position, wherein the of the guide sheath 12 the godet unit 11 running yarn sheet 9.1 on the guide grooves 17.1 and the crowd of yarns 9.2 on the guide grooves 17.2 the leadership roles 18 are distributed. Thus, per leadership 18 two threads led simultaneously to the opposite winding points 8.1 and 8.2 einzulaufen. The leadership roles 18 become due to the frictional contact with the threads 9.1 and 9.2 so driven that the deflection of the threads is substantially slip-free.

At the in 1 to 3 illustrated embodiment is the carrier 21 the leadership roles 18 in a leadership facility 20 kept movable and can be guided by a horizontal movement from the operating position in a threading position. In the threading position, the leadership roles 18 in an area beside the galette unit 11 shifted to at a process start the guided by a suction gun threads in the guide grooves 17.1 and 17.2 to be able to thread. This is how the leadership roles become 18 after threading by the mobile carrier 21 led into their operating position, in which they during the winding of the yarn sheets 9.1 and 9.2 remain. This situation is in the 1 to 3 represented so that in a melt spinning process by the godet unit 11 fed threads continuously in the Aufspulstationen 1.1 and 1.2 to be wound into coils. Due to the pairwise guidance of the threads on the guide rollers, small thread tension increases can be realized, so that also threads with fine titres can advantageously be wound into coils.

In order to be able to safely carry out the inlet and the distribution of the yarn sheets, in particular during the course of the guide rollers 18 to comply with certain thread deflections. In 5 is a schematic side view of two opposing winding points 8.1 and 8.2 with upstream leadership roles 18 shown schematically. The winding stations 8.1 and 8.2 are schematically through the coils to be wound 10.1 and 10.2 as well as the upstream pressure rollers 6.1 and 6.2 and the traversing devices 7.1 and 7.2 shown. The winding position 8.1 is the guide groove 17.1 upstream. The mirror-symmetric opposite winding point 8.2 is the guide groove 17.2 the leadership role 18 assigned. The guide grooves 17.1 and 17.2 are each on vertically oriented reel bodies 20.1 and 20.2 the leadership role 18 formed so that the guide grooves 17.1 and 17.2 in a role level 25 circulate. The traversing devices 7.1 and 7.2 each have a guide ruler per winding position 27.1 and 27.2 on which interact with wing tips of a Flügelchangierung. Between the guide ruler 27.1 and the guide groove 17.1 is a traversing plane 24 clamped in which the tapered thread is guided. In that regard, is between the traversing device 7.2 and the guide groove 17.2 also a traversing plane 24 spanned, in which the adjacent thread is changed. In both cases, this is between the chanigera level 24 and the role level 25 formed an angle α, which the thread deflection between the guide roller 18 and the winding stations 8.1 and 8.2 certainly. To ensure a safe process from the guide grooves 17.1 and 17.2 the leadership role 18 To obtain, is the deflection angle between the leadership role 18 and the winding stations 8.1 and 8.2 within certain limits. Thus, it has been found that the angle α should preferably be in the angular range between 0 ° and 15 °.

In the event that the Aufspulstationen are integrated in a machine frame of a winding machine, the shortest possible distances between the winding stations of Aufspulstationen should be realized. Such an embodiment is shown schematically in FIG 6 represented, in which case only the top view of Aufspulstationen 1.1 and 1.2 is shown.

The winding stations 1.1 and 1.2 are identical in construction to their aforementioned embodiment, wherein all components in a common machine frame 2 are held. Above the winding stations 1.1 and 1.2 is the godet unit 11 and the head thread guides 18 to that of the guiding mantle 12 the godet unit 11 running threads to the winding stations 8.1 and 8.2 the Aufspulstationen 1.1 and 1.2 respectively. The leadership roles 18 have a reel body 20 on, on the two parallel guide grooves 17.1 and 17.2 are formed. The leadership roles 18 are in a median plane between the rewind stations 1.1 and 1.2 arranged, wherein the guide grooves 17.1 the leadership roles 18 the winding stations 8.1 and the guide grooves 17.2 the leadership roles 18 the winding stations 8.2 assigned. The reel body 20 are directly above a concentrically arranged bearing point in this embodiment 20 on each axis 19 rotatably mounted. The axes 19 are common to the mobile carrier 21 attached. The axes 19 the leadership roles 18 are parallel to the axis of the galette unit 11 aligned, the carrier 21 and the godet unit 11 opposite the median plane 23 are aligned obliquely, so that the axes 19 on the carrier have different lengths, so that the guide rollers 18 in the operating position in the median plane 23 can be kept. Major to the middle plane 23 generated tilt is achieved that the threads substantially parallel to each other between the godet unit 11 and the leadership roles 18 are feasible and that the leadership roles 18 in the operation control in the middle plane 23 can be kept.

As before according to the embodiment according to 1 and 3 is described in this case, the carrier 21 in a leadership facility 22 held and across the godet unit 11 adjustable, so that the guide rollers 18 between a threading position in the yarn path in front of the godet unit 11 and an operating position in the yarn path behind the godet unit 11 are placeable.

At the in 6 illustrated embodiment are per leadership role 18 two threads of the adjacent thread bundles 9.1 and 9.2 at the same time. In that regard, here the same effects as before in the embodiment after 1 to 3 explained reached.

In order to allow threading in the guide grooves of the guide rollers in a large variety of side by side guided threads is in 7 an embodiment of a roller assembly shown in which the guide rollers 18 one threading cover each 28 is provided in the area of the guide grooves 17.1 and 17.2 one threading groove each 29.1 and 29.2 form. The threading cover is preferably on a roll holder 26 or directly on the carrier 21 attached.

The threading covers 28 can be used for any leadership 18 form identical. However, there is also the possibility of the sections of Einfädelabdeckung 28 between two adjacent guide rollers 18 to design such that between the adjacent Einfädelabdeckungen 28 at least one threading groove 29.2 sets, as in 7 is shown.

LIST OF REFERENCE NUMBERS

1.1, 1.2

coiling

2.1, 2.2

machine frame

3.1, 3.2

spindle turret

4.1, 4.2

first winding spindle

5.1, 5.2

second winding spindle

6.1, 6.2

pressure roller

7.1, 7.2

Traversing device

8.1, 8.2

winding position

9.1, 9.2

yarn sheet

10.1, 10.2

Kitchen sink

11

galette

12

guide sheath

13

godet

14.1, 14.2

spindle drive

15.1, 15.2

spindle drive

16.1, 16.2

revolver drive

17.1, 17.2

guide

18

leadership

19

axis

20, 20.1, 20.2

roller body

21

carrier

22

guide means

23

midplane

24

Traversing plane

25

role level

26

roll holder

27.1, 27.2

guide bar

28

Einfädelabdeckung

29.1, 29.2

threading groove

30

depository

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10393262 T5 [0002]
• EP 1594785 B1 [0004]

Claims (9)

Device for winding synthetic threads in a melt spinning process with at least one godet unit ( 11 ) and two mirror-symmetrically arranged Aufspulstationen ( 1.1 . 1.2 ) below the godet unit ( 11 ) are arranged and the respective plurality of opposite winding points ( 8.1 . 8.2 ) along parallel-aligned winding spindles ( 4.1 . 4.2 ), wherein the winding points ( 8.1 . 8.2 ) two groups of thread guides ( 17.1 . 17.2 ) are assigned by which the threads between the godet unit ( 11 ) and the winding stations ( 8.1 . 8.2 ), characterized in that the godet unit ( 11 ) at least one of the winding spindles ( 4.1 . 4.2 ) transversely oriented guide casing ( 12 ) and that the thread guides ( 17.1 . 17.2 ) by a group of rotatable guide rollers ( 18 ) is formed, the two parallel circumferential guide grooves ( 17.1 . 17.2 ) and those in a mid-level ( 23 ) between the rewind stations ( 1.1 . 1.2 ) are held. Device according to claim 1, characterized in that the guide rollers ( 18 ) via one of the relevant leadership roles ( 18 ) assigned storage location ( 30 ) are freely rotatably mounted, wherein the axes ( 19 ) of the leadership roles ( 18 ) parallel to the guide sheath ( 12 ) of the galette unit ( 11 ) are aligned. Device according to claim 2, characterized in that the bearings ( 30 ) of the leadership roles ( 18 ) are each formed by an air bearing. Apparatus according to claim 2 or 3, characterized in that the bearing points ( 30 ) on a common carrier ( 21 ) and that the carrier ( 21 ) in a management facility ( 22 ) is held so movable that the guide rollers ( 18 ) are feasible between an operating position and a threading position. Device according to one of claims 1 to 4, characterized in that the guide grooves ( 17.1 . 17.2 ) per leadership role ( 18 ) on a roller body ( 20 ) or on two separate roll bodies ( 20.1 . 20.2 ) are formed. Device according to claim 5, characterized in that the roller bodies ( 20.1 . 20.2 ) per leadership role ( 18 ) by an axis ( 19 ), the depository ( 30 ) is formed in an axle center. Device according to one of claims 1 to 6, characterized in that the guide rollers ( 18 ) in each case between opposite winding points ( 8.1 . 8.2 ) of the two rewind stations ( 1.1 . 1.2 ) are arranged such that between the guide grooves ( 17.1 . 17.2 ) and the associated traversing units ( 7.1 . 7.2 ) each have a sloping traversing plane ( 24 ) with a role plane ( 25 ) includes an angle <15%. Apparatus according to claim 7, characterized in that the angle between the traversing plane ( 24 ) and the role level ( 25 ) for both rewind stations ( 1.1 . 1.2 ) is the same size. Device according to one of claims 1 to 8, characterized in that the guide rollers ( 18 ) each have a threading cover ( 28 ) with a threading groove ( 29.1 . 29.2 ) per guide groove ( 17.1 . 17.2 ) assigned.

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