WO2018134048A1

WO2018134048A1 - Winding machine

Info

Publication number: WO2018134048A1
Application number: PCT/EP2018/050134
Authority: WO
Inventors: Martin Fischer; Rainald Voss; Jörg SCHIPPEL; Marc-André HERRNDORF
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2017-01-19
Filing date: 2018-01-03
Publication date: 2018-07-26
Also published as: JP7014804B2; EP3571148B1; CN110267894B; EP3571148A1; JP2020505290A; CN110267894A; DE102017000457A1

Abstract

The invention relates to a winding machine for winding multiple threads into coils, comprising multiple winding locations (1.1 - 1.4). The winding locations (1.1 - 1.4) are arranged next to one another along at least one winding spindle (6.1) which is held in an overhanging manner. A top thread guide (3.1 - 3.4) is arranged upstream of each winding location in the thread course. At least one godet (11) which is arranged laterally next to the winding locations (1.1 - 1.4) is paired with the top thread guides (3.1 - 3.4), said godet being oriented transversely to the winding spindle (6.1). In order to thread the threads into the top thread guides (3.1 - 3.4) during a process start, an auxiliary device (14) is provided comprising a thread-in guide (16) with multiple guide grooves (16.1 - 16.4) formed next to one another. The thread-in guide (16) is guided along the top thread guides (3.1 - 3.4) in a guide track (17) by a drive means (19), said guide track having at least one feed track (17.1) and a return track (17.2). In order to achieve a reliably guidance of the thread-in guide (16), the feed track (17.1) is arranged above the top thread guides (3.1 - 3.4) and the return track (17.2) is arranged below the top thread guides (3.1 - 3.4) on a vertically aligned guide plane (22) of the thread-in guide according to the invention, wherein an angle ranging from 1° to 15° is formed between the guide plane (22) of the thread-in guide (16) and an alignment line of the top thread guides (3.1 - 3.4).

Description

winding machine

The invention relates to a winding machine for winding a plurality of threads into coils according to the preamble of claim 1.

In a melt-spinning process, the threads produced as a bundle of threads are wound parallel to spools at the end of the process. For this purpose, winding machines with a plurality of winding stations are used, which are formed along a winding spindle held on a machine frame. The winding spindle is used to hold the coils so that they can be wound simultaneously. The filaments are deposited in a so-called cross-winding, so that within each of the winding positions, the thread is guided back and forth individually by means of a traversing unit on the coil surface prior to casserole. The feeding in the winding stations and the separation of the yarn sheet ensues via a plurality of so-called head thread guides, which are each arranged upstream of the traversing units in the winding positions. The yarn sheet is usually fed via a godet the head thread guides. In order to be able to thread the yarns of the yarn sheet into the winding positions of the winding machines at the beginning of a process, basically two variants of winding machines are known in the state of the art. In a first variant, which is disclosed for example in WO 2008/138827 A2, no additional auxiliary devices for threading the threads are needed. In these winding machines, the thread guide elements of the winding machine or the godet itself are used to perform a relative movement for applying and distributing the threads.

In a second variant of winding machines, an auxiliary device for thread guidance and threading of the threads into the head thread guides used. Such a winding machine, from which the invention proceeds, is known for example from WO 98/28217 or EP 2 497 732 A2. In the known winding machines, the auxiliary device has a movable threading thread guide with a plurality of side by side formed guide grooves. The threading thread guide is used to pick up the filaments guided at the start of the process by a suction gun and to separate them by a movement along a guideway and to transfer them to the head thread guides. In the winding machine known from WO 98/28217 AI, the auxiliary device uses a threading thread guide with step-shaped guide grooves. Thus, the threads can be at different heights lead to the Einfädelfadenführer. In this case, the thread is guided in a straight line past a plurality of head thread guides, which are arranged at different heights and thus make it possible to take over and singulate the threads. In this winding machine, however, there is the disadvantage that the head thread guides have different heights and thus lead to different traversing conditions in the winding stations.

In contrast, in the case of the winding machine known from EP 2 497 732 A2, a threading thread guide is used in which the guide grooves are arranged at the same height to take over the thread sheet. In order to separate and transfer the threads to the head thread guides, the thread thread guide is guided in such an inclined guide track with an access track and a return path that the thread thread guide also moves in the axial direction relative to the head thread guides. However, such inclined guideways tend to jamming and tilting of the guide means and are therefore very prone to failure. It is an object of the invention to develop a generic winding machine with an auxiliary device for threading the threads after the process start in such a way that the threads can be distributed to the head thread guides with simple movement sequences of the single thread thread guide.

This object is achieved in accordance with the invention in that the feed track above the head thread guide and the return track below the head thread guide form a vertically oriented guide plane of the thread guide and that between the guide plane of the thread guide and an alignment line of the head thread guide an angle in the range of 1 ° to 15 ° is formed.

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

The invention has the particular advantage that the threading thread guide of the auxiliary device for taking over the yarn sheet and for distributing the yarn sheet on the head thread guide with a linear movement in two directions can be guided. This allows fast and reproducible threading operations to be performed. Due to the angular arrangement of the guide plane of the threading thread guide to the alignment line of the head thread guides any distances between the head thread guides can be bridged to make a selective distribution of the guided on the Einfädelfadenführer yarn sheet. In order to limit the deflection of the threads, an angle in the range of 1 ° to 15 ° has proved successful.

In order to improve the positioning accuracy, in particular when transferring the threads to the head thread guides, the development of the invention is particularly advantageous in which the guide grooves of the threading thread guide rers are aligned parallel to the management level. The threads can thus be guided at a fixed distance from each other at the thread thread guide.

Here, in particular, the training has proven in which the threading thread guide is formed by a freely rotatably mounted guide roller whose axis is aligned orthogonal to the management level. This also allows larger numbers of threads within the yarn sheet over longer distances of the guideway safely lead. In addition, conventional suction guns can be used to safely receive the yarn sheet without larger Fadenzugkräfte during the threading and while guiding the thread threader.

In order to obtain a continuous movement sequence of the threading thread guide, it is further provided that the inlet track and the return track are connected together at a threading end by a transverse track for lowering the threading thread guide.

In this case, it has proved particularly useful, according to a development of the invention, for the guideway to be self-contained and for the threading thread guide to be able to be inserted into a circulation of the guideway for threading the threads. Thus, a high reproducibility can be achieved when distributing the threads. The thread-threading guide can be continuously or stepwise in different positions for catching and distributing the threads lead to each process start within the guideway.

So that the path of the threading thread guide in the guideway can be made as possible in a fixed relation to a machine frame, is further provided that the guideway is formed by a guide rail and guided in the guide rail guide carriage, the threading thread guide is held on the guide carriage. Such mechanical Devices for realizing the guideway of the threading leader also have the particular advantage that the connection of a drive means is possible in a simple manner. Thus, the drive means can preferably be formed by a linear drive which is connected to the guide carriage and moves it in the guide rail.

It has been shown that both the thread spacing of the threads on the circumference of the godet and the distances between the head thread guides influence the size of the angle between the guideway and the line of flight of the head thread guides. To that extent, an angle optimized for the process of folding can be determined from the relation of a sum of thread spacings of the threads on the godet to a sum of distances between the thread guides. In order to obtain an equidirectional deflection of the threads between the godet and the head thread guides, the development of the invention is provided in which the godet and the head thread guide are arranged to each other such that a first or a last thread on the circumference of the godet parallel to the line of flight of the head thread guide is feasible.

For this purpose, the head thread guides are advantageously formed by rotatably mounted deflection rollers, which each have an open thread running track on the circumference for guiding the thread. On the one hand, the threading of the threads into the head thread guides is thereby facilitated, and on the other hand the thread friction during the application process is minimized.

The winding machine according to the invention will be explained in more detail with reference to the accompanying figures. They show: Fig. 1 shows schematically an embodiment of the winding machine according to the invention in a side view

Fig. 2 shows schematically a plan view of the in the winding machine according to

Fig. 1 integrated auxiliary device

3 is a schematic side view of the auxiliary device from FIG. 2

Fig. 4.1, 4.2

and FIG. 4.3 schematically shows a plan view of the auxiliary device from FIG. 2 in different operating situations

Fig. 5.1, 5.2

and FIG. 5.3 shows schematically a side view of the auxiliary device from FIG. 2 with different operating situations

1, an embodiment of the winding machine according to the invention is shown schematically in a side view. The winding machine according to the invention has in this embodiment a total of four winding points 1.1 to 1.4, which are formed side by side in a machine frame. The winding stations 1.1 to 1.4 are arranged along a winding spindle 6.1 projecting. In each of the winding units 1.1 to 1.4 in each case one yarn is fed to a group of yarns 2 and wound into a bobbin 8. The number of winding positions 1.1 to 1.4 and the number of threads 2.1 to 2.4 of the yarn sheet 2 is exemplary here. In principle, such winding machines can have up to 16 winding points next to each other.

The structure of the winding points 1.1 to 1.4 is identical, so that the basic structure is described using one of the winding points 1.1. The winding point 1.1 has a traversing unit 4, by means of which a supplied yarn 2.1 is guided back and forth within a traversing stroke. The traversing unit 4 could be formed, for example, by a reverse-threading shaft traverse, in which a traversing yarn guide is guided back and forth within a traverse stroke, or a trailing blade with a plurality of oppositely driven blade tips, which pull the yarn back and forth. The traversing unit 4 is preceded by a head thread guide 3.1, which forms the tip of a so-called traversing triangle within a traversing plane. The head thread guide 3.1 thus forms the inlet into the winding point 1.1.

For winding the yarn 2.1 in the winding point 1.1, a winding tube 9 is clamped on the circumference of the driven winding spindle 6.1. The winding spindle 6.1 extends over all adjacent winding stations 1.2, 1.3 and 1.4, so that each of the winding stations 1.1 to 1.4, the supplied yarns 2.1 to 2.4 are wound simultaneously.

For depositing the thread 2.1 on the surface of the bobbin 8 in the winding point 1.1, a pressure roller 5 is provided. The pressure roller 5 likewise extends over the entire length of the winding points 1.1 to 1.4. The thread 2.1 is placed after Teilumschlingung on the circumference of the pressure roller 5 on the surface of the coil 8.

The machine frame 10 serves to receive and fasten the changer devices 4, the pressure roller 5 and the winding spindle 6.1. The winding spindle 6.1 is cantilevered in a winding turret 7, which is rotatably held in the machine frame 10. The Spulrevolver 7 holds 180 ° offset from the winding spindle 6.1 a second winding spindle 6.2 to a continuous winding of the threads in the winding points 1.1 to 1.4 to perform. The winding turret 7 and the winding spindles 6.1 and 6.2 each drives (not shown here) are assigned.

The head thread guides 3.1 to 3.4 of the winding stations 1.1 to 1.4 are each formed by freely rotatably mounted deflection rollers 13.1 to 13.4, which are rotatably supported on a roller carrier 27. The deflection rollers 13.1 to 13.4 have at their periphery in each case an open thread running track 26, in which in each case one of the threads 2.1 to 2.4 is guided with Teilumschlingung.

The head thread guides 3.1 to 3.4 is preceded by a godet 1 1 in the yarn path. The godet 1 1 is held on a godet carrier 12 and is coupled to a drive, not shown here. The godet carrier 12 is held laterally next to the winding points 1.1 to 1.4 at the projecting end of the winding spindle 6.1. Here, the godet carrier 12 can be supported on the machine frame 10.

Between the godet 1 1 and the traversing units 4 of the winding stations 1.1 to 1.4, an auxiliary device 14 for threading the threads is arranged in the top flap guides. The auxiliary device 14 has a movable threading thread guide 16 which can be guided in a guide track 17. The guideway 17 extends along the winding points 1.1 to 1.4. For further explanation of the auxiliary device 14, reference is made below to FIGS. 2 and 3. FIG. 2 shows a plan view of the auxiliary device 14 of the winding machine and FIG. 3 shows a side view of the auxiliary device 14 of the winding machine.

Unless an explicit reference is made to one of the figures, the following description applies to both figures. The threading thread guide 16 is formed in this embodiment by a freely rotatably mounted guide roller 25. The guide roller 25 has at its periphery a plurality of circumferential guide grooves 16.1 to 16.4. The number of guide grooves 16.1 to 16.4 here is identical to the number of threads 2.1 to 2.4 of the yarn sheet 2. The guide roller 25 is guided in a guide track 17 which spans a vertically oriented guide plane 22.

To explain the guide track 17, reference is made to FIG. 3. The guideway 17 is formed of several sections. A first guide section is located above the head thread guides 3.1 to 3.4. This guide section is referred to here as inlet track 17.1. Another provided below the head thread guide 3.1 to 3.4 section of the guide track 17 is designated as the return path 17.2. The inlet track 17.1 and the return track 17.2 are connected to one another at a threading end 23 via a transverse track 17.3. At the opposite end, the inlet track 17.1 and the return track 17.2 are connected to one another via another transverse track 17.4, so that a closed guide track 17 is formed.

The inlet track 17.1 and the return track 17.2 are arranged in the guide plane 22 of the threading thread guide 16. For this purpose, the guide track 17 is formed in a guide rail device 18, a guide slide 24 carrying the threading thread guide 16. The guide carriage 24 is coupled to a linear drive 20. The guide rail device 18, the guide carriage 14 and the linear drive 20 thus form a drive means 19 which guides the threading thread guide 16 in the provided guide track 17. It should be expressly mentioned at this point that the design of the drive means 19 in this embodiment example is liable. In principle, other means are also possible to move the thread-threading guide on the provided guide track 17.

As is apparent from the illustration in Fig. 2, the guide roller 25 is aligned with the guide grooves 16.1 to 16.4 orthogonal to the guide plane 22. The guide grooves 16.1 to 16.4 are parallel to the guide plane 22 and preferably have a thread pitch equal to a thread pitch of the threads 2.1 to 2.4 on the circumference of the godet 1 1 corresponds. The guide rail device 18 is arranged in such a way next to the roller carrier 27 of the guide rollers 13.1 to 13.4, that the threading thread guide 16 in the inlet track 17.1 above the head thread guide 3.1 to 3.4 and in the return path 17.2 below the head thread guide 3.1 to 3.4 is feasible.

The head thread guides 3.1 to 3.4 and the guide rollers 13.1 to 13.4 are arranged in a plane, wherein between an alignment line 21 of the head thread guide 3.1 to 3.4 and the guide plane 22, an angle α is formed. In that regard, the guide rail means 18 associated with a tilted by the angle α inclined position the roller carrier 27. The angle α is largely determined by the sum of the thread spacings at the circumference of the godet 1 1 and by the sum of the distances between the head thread guides 3.1 to 3.4. Usually, the angle α is in a range of 1 ° to max. 15 °. Larger angles of inclination are avoided, as the deflection of the thread exceeds permissible ranges. The winding machine according to the invention is shown in Fig. 1 in an operating situation. In that regard, the auxiliary device 14 is in the illustrations in Fig. 1 to 3 in a rest phase. During normal operation of the winding machine, in which the threads 2.1 to 2.4 are wound continuously into coils 8, the threading thread guide 16 is held in a lower rest position at the end of the return path 17.2. To explain the function of the auxiliary device 14 for threading the threads in the head thread guides 3.1 to 3.4 is below to FIGS. 4.1 to 4.3 and 5.1 to 5.3 reference. In FIGS. 4.1 to 4.3, the top view of the auxiliary device 14 and in FIGS. 5.1 to 5.3 a side view of the auxiliary device 14 in various operating situations is shown.

At a process start, the yarn sheet 2 is guided by a suction gun 15 for applying the pre-arranged process units and the illustrated godet 1 1. The suction gun 15 can be guided manually by an operator or automatically by a robot. After the yarn sheet 2 is applied to the godet 1 1, the threads are fed by the suction gun 15 of the auxiliary device 14. In order to distribute the yarns of the yarn thread 2 to the winding points 1.1 to 1.4, the linear drive 20 of the auxiliary device 14 is activated. In this case, the threading thread guide 16 is led out of its rest position in the return path 17.2 and transferred via the transverse web 17.4 in the inlet track 17.1. In this case, the threads 2.1 to 2.4 are detected by the guide grooves 16.1 to 16.4 on the circumference of the guide roller 25. The guide roller 25 is guided over the guided in the inlet track 17.1 guide carriage 24 to the threading end 23 and then passed over the transverse web 17.3 in the return path 17.2. The movement of the guide carriage 24 can take place here by the linear drive 20 in stages or continuously. Here, the yarn sheet 2 is first performed above the head thread guide 3.1 to 3.4. The running of the guide roller 25 threads are kept away by the suction gun 15 of the head thread guides 3.1 to 3.4, so that by lowering the guide roller 25 in the transition from the inlet track 17.1 in the return path 17.2 the yarn sheet 2 through the guide roller 25 below the head thread guide 3.1 bis 3.4 are guided. This will stroke of the guide carriage 24, the threads successively handed over to the head thread guides 3.1 to 3.4 distributed. Due to the design of the head thread guides 3.1 to 3.4 as a deflection roller 13.1 to 13.4, each with an open thread running track 26, an automatic transfer of the threads is possible solely by the movement of the threading thread guide 16. The distribution and selection of the threads 2.1 to 2.4 is shown in FIGS. 4.3 and 5.3. In the situation shown, the threading thread 16 moves in the return path 17.2 back to its rest position shown in dashed lines. The threads 2.4 and 2.3 have already been transferred to the pulleys 13.4 and 13.3. As the threading thread guide 16 moves in the return path 17.2, the threads 2.2 and 2.1 are likewise transferred to the deflection rollers 13.2 and 13.1 provided for this purpose. Thus, the selection of the group of threads is completed on the winding stations 1.1 to 1.4 of the winding machine. By additional Hilfsseinrichtun- not shown here, the yarn sheet is transferred to the winding spindles for catching and winding on the winding tubes.

Claims

claims

Winding machine for winding a plurality of yarns into spools having a plurality of winding stations (1.1 - 1.4), which are arranged next to one another along at least one winding spindle (6.1), having a plurality of winding yarn heads (3.1 - 1.4) arranged upstream of the yarn paths (3.1 - 3.4) , with at least one galette (1 1) arranged laterally next to the winding points (1.1 - 1.4), which is aligned transversely to the winding spindle (6.1) and is arranged upstream of the thread guides (3.1-3.4) and with an auxiliary device (14) for threading the threads in the thread guides (3.1-3.4), wherein the auxiliary device (14) comprises a threading thread guide (16) with a plurality of side by side guide grooves (16.1-16.4), wherein the threading thread guide (16) by a drive means (19) in a guideway ( 17) is feasible and wherein the guide track (17) extends along the head thread guide (3.1 - 3.4) and a feed track (17.1) and a return track (17 .2), characterized in that the inlet track (17.1) above the head thread guide (3.1 - 3.4) and the return track (17.2) below the head thread guide (3.1 - 3.4) form a vertically oriented guide plane (22) of the threading thread guide (16) and that between the guide plane (22) of the threading thread guide (16) and a line of flight (22) of the head thread guide (3.1 - 3.4) an angle α in the range of 1 ° to 15 ° is formed.

Winding machine according to claim 1, characterized in that the guide grooves (16.1 - 16.4) of the threading thread guide (16) are aligned parallel to the guide plane (22).

Winding machine according to claim 2, characterized in that the threading thread guide (16) by a freely rotatably mounted Führungsrol- le (25) is formed, whose axis is aligned orthogonal to the guide plane (22).

4. Winding machine according to one of claims 1 to 3, characterized in that the feed track (17.1) and the return track (17.2) at a threading end (23) by a transverse web (17.3) for lowering the threading thread guide (15) are interconnected ,

5. Winding machine according to claim 4, characterized in that the guideway (17) is closed in itself and the threading thread guide

(16) for threading the threads in a cycle of the guideway (17) is feasible.

6. Winding machine according to claim 5, characterized in that the guide track (17) by a guide rail (18) and one in the

Guide rail (18) guided guide carriage (24) is formed, wherein the threading thread guide (16) on the guide carriage (24) is held. 7. Winding machine according to claim 6, characterized in that the drive means (19) by a linear drive (20) is formed, which is connected to the guide carriage (24).

8. Winding machine according to one of claims 1 to 7, characterized in that the angle (a) between the guide plane (22) of the

Threading thread guide (16) and the alignment line (21) of the head thread guide (3.1, 3.4) at a relation between a sum of thread pitches of the threads on the godet (1 1) and a sum of distances between the head thread guides (3.1 - 3.4) can be determined. Winding machine according to one of claims 1 to 8, characterized in that the godet (1 1) and the head thread guide (3.1 - 3.4) is arranged to each other such that a first or a last thread (2.1 - 2.4) on the circumference of the godet (1 1) parallel to the line of flight (22) of the head thread guide (3.1 - 3.4) is feasible.

Winding machine according to one of claims 1 to 9, characterized in that the head thread guides (3.1 - 3.4) by rotatably mounted deflection rollers (13.1 - 13.4) are formed, each having an open thread running track (26) on the circumference for guiding the thread.