CN110267894B

CN110267894B - Winding machine

Info

Publication number: CN110267894B
Application number: CN201880006717.3A
Authority: CN
Inventors: M·费希尔; R·沃斯; J·希佩尔; M-A·赫尔恩多夫
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2017-01-19
Filing date: 2018-01-03
Publication date: 2021-03-09
Anticipated expiration: 2038-01-03
Also published as: JP7014804B2; EP3571148B1; EP3571148A1; WO2018134048A1; CN110267894A; JP2020505290A; DE102017000457A1

Abstract

The invention relates to a winding machine for winding a plurality of yarns to form bobbins, comprising a plurality of winding stations. The winding stations are arranged side by side along at least one winding spindle held in position in a projecting manner, wherein a suspended-top thread guide is provided upstream of the winding stations in the thread direction. At least one yarn guide disc is assigned to the suspended-top yarn guide, which is arranged laterally to the winding position and aligned transversely to the winding spindle. In order to thread the thread into the suspended ceiling thread guide at the beginning of the processing process, an auxiliary device with a threading thread guide is provided, which has a plurality of guide grooves arranged side by side. The threading guides can be guided by means of a drive in a guide rail along the overhead guide, which has at least one feed rail and one return rail. For safe guiding of the threading guides, the feed rail above the ceiling-mounted guides and the return rail below the ceiling-mounted guides are according to the invention arranged in a vertically aligned guide plane of the threading guides, wherein an angle in the range of 1 ° to 15 ° is formed between the guide plane of the threading guides and the aligned line of the ceiling-mounted guides.

Description

Winding machine

Technical Field

The present invention relates to a winding machine for winding a plurality of yarns.

Background

The yarns produced as a group of yarns at the end of the melt spinning process are wound in parallel into bobbins. For this purpose, winding machines are used which have a plurality of winding stations which are arranged along winding spindles held in a projecting manner in position on a machine frame. The winding spindles are used for receiving the bobbins to simultaneously wind the bobbins. The yarn deposition takes place in the form of so-called cross-winding, so that the yarn is individually reciprocated in the winding position by the traversing unit before it is moved onto the bobbin surface. The feeding into the winding position and the separation of the thread groups takes place by means of a plurality of so-called overhead thread guides, which are each arranged upstream of the traversing unit in the winding position. The yarn groups are here usually fed to the overhead thread guide via a thread guide disc.

In order to be able to thread the threads of a thread group into a winding position of a winding machine at the start of the process, two variants of winding machines are known in principle from the prior art. In a first variant, for example disclosed in WO2008/138827a2, no additional auxiliary device is required to thread the yarn. In the case of said winding machines, the yarn guide or the yarn guide disc itself of the winding machine is used to perform the splicing and to distribute the relative movement of the yarns.

In the case of the second variant of the winder, auxiliary devices are used to guide and thread the yarn into the suspended-top thread guide. Such winding machines from which the invention originates are disclosed, for example, by WO98/28217 or EP2497732A 2. In the case of known winding machines, the auxiliary device has a movable threading carrier with a plurality of guide slots arranged side by side. The thread guide is used to receive the yarn guided by means of the suction gun at the beginning of the process and to singulate and transfer the yarn to the suspended-top thread guide by movement along the guide rail.

In the case of the winding machine disclosed by WO98/28217a1, the auxiliary device utilizes a threading carrier having a plurality of guide grooves which are arranged in a stepped shape. The yarn can then be guided at different heights on the threading guides. The thread is guided in a linear manner through a plurality of suspended thread guides arranged at different heights, so that the removal and the singulation of the thread can be achieved. However, this winding machine has the disadvantage that the suspended ceiling-mounted thread guides have different heights and thus lead to varying traversing conditions in the winding position.

In contrast, in the case of the winding machine known from EP2497732a2, a plurality of guide grooves for receiving the thread groups are provided at the same height by means of thread guides. In order to make the thread single and be transferred to the suspended ceiling carrier, the threading carrier is guided in a guide rail, which has a feed rail and a return rail and is inclined such that it also moves in the axial direction relative to the suspended ceiling carrier. However, such inclined guide rails have a tendency to jam and skew the guide, and thus are prone to malfunction.

Disclosure of Invention

The object of the present invention is to improve a universal winder with an auxiliary device for threading the yarn after the start of the process, so that the yarn can be distributed to the suspended-top carrier by a series of simple actions of simply threading the carrier.

According to the invention, this object is achieved in that the feed rail above the overhead thread guide and the return rail below the overhead thread guide form a vertically aligned guide plane penetrating the thread guide and an angle in the range of 1 ° to 15 ° is formed between the guide plane penetrating the thread guide and the level line of the overhead thread guide.

The invention has the particular advantage that the threading guides of the auxiliary device can be guided by means of a linear movement in both directions in order to receive and distribute the yarn groups to the ceiling-mounted guides. A fast and reproducible threading operation can then be carried out. The random spacing between the overhead guides can be interrupted because of the angular arrangement of the guide plane of the threading guides in relation to the aligned lines of the overhead guides, to perform a selective distribution of the groups of yarns guided on the threading guides. In order to limit the yarn deflection, angles in the range of 1 ° to 15 ° have proven successful.

In order to increase the positioning accuracy, in particular when transferring the thread to the suspended ceiling carrier, the development of the invention in which the guide groove penetrating the carrier is aligned parallel to the guide plane is highly advantageous. The threads can then be guided at a fixed mutual spacing on the threading guides.

The development has proved to be particularly successful here in that the threading guide is formed by a guide roller which is mounted freely rotatably and the axis of which is aligned perpendicularly to the guide plane. A relatively large number of yarns in the yarn set can then also be guided over a relatively large guide distance. Furthermore, conventional suction guns can be used to reliably receive the yarn set during the threading operation and guidance on the threading guides without generating a relatively high yarn tension.

In order to obtain a succession of successive actions of the threading guides, it is also provided that said feed and return rails are mutually coupled at the threading end by a transverse rail in order to lower the threading guides.

It has proven particularly successful here that the guide rail is inherently closed according to one development of the invention and the threading guides for threading the thread can be guided in the circuit of the guide rail. Thus, a high degree of reproducibility can be obtained when distributing the yarn. For each start of the process, the threading guides can be guided continuously or stepwise to various positions in the guide rail for gripping and distributing the yarn.

In order that the course of movement of the threading guides in the guide rail can be carried out in a perfectly fixed relationship with respect to the machine frame, it is also provided that the guide rail is formed by a guide rail and a guide slide guided in the guide rail, wherein the threading guides are held on the guide slide. Such a mechanical device for realizing the threading of the guide rails of the yarn guides also has the particular advantage that the coupling of the drive means can be realized simply. The drive means can then preferably be formed by a linear drive mechanism which is coupled to the guide slide and moves the latter within the guide track.

It has been shown that the yarn gap of the yarns on the circumference of the yarn guide disc and the spacing between the ceiling-suspended guides influence the size of the angle between the guide rails and the aligned lines of the ceiling-suspended guides. In this connection, the angle optimized for the threading procedure can be determined by the relationship of the sum of the yarn gaps of the yarns on the circumferential surface of the yarn guide disc to the sum of the suspended ceiling yarn guide spacings.

In order to achieve a uniform yarn deflection between the yarn guide disc and the overhead yarn guide, a development of the invention is provided in which the yarn guide disc and the overhead yarn guide are arranged relative to one another in such a way that the first or last yarn on the circumferential surface of the yarn guide disc can be guided parallel to the alignment of the overhead yarn guide.

For this purpose, the overhead thread guide is advantageously formed by a plurality of rotatably mounted deflection rollers, which each have an open thread running rail for guiding the thread on the circumferential surface. On the one hand, threading of the yarn into the suspended ceiling carrier is then facilitated and, on the other hand, yarn friction during the joining operation is minimized.

Drawings

The winder according to the invention will be explained in more detail below with reference to the accompanying drawings, in which:

figure 1 shows schematically an embodiment of a winding machine according to the invention in a side view,

figure 2 schematically shows a plan view of an auxiliary device integrated in the winding machine according to figure 1,

figure 3 schematically shows a side view of the auxiliary device of figure 2,

figures 4.1, 4.2 and 4.3 schematically show plan views of the auxiliary device of figure 2 in different operating conditions,

fig. 5.1, 5.2 and 5.3 schematically show side views of the auxiliary device of fig. 2 in different operating conditions.

Detailed Description

One embodiment of a winder according to the present invention is schematically shown in side view in fig. 1. The inventive winding machine in this embodiment has a total of four winding positions 1.1-1.4, which are arranged side by side in the machine frame. The winding stations 1.1-1.4 are arranged along a winding spindle 6.1 held in place in a projecting manner. One yarn of the yarn group 2 is fed to each winding position 1.1 to 1.4 and wound to a bobbin 8. The number of winding positions 1.1-1.4 and the number of yarns 2.1-2.4 of the yarn set 2 are exemplary here. In principle, such a winding machine can have up to 16 winding positions next to one another.

The structure of these winding positions 1.1-1.4 is designed to be identical, so that the basic structure is described by one of the winding positions 1.1.

The winding station 1.1 has a traversing unit 4, by means of which the supplied yarn 2.1 is moved back and forth in a traversing stroke. The traverse unit 4 may be formed by, for example, a return yarn traverse mechanism in which a traverse guide is reciprocated in a traverse stroke, or a rotor traverse mechanism having a plurality of rotor heads which are driven in opposite directions to each other and pull the yarn in a reciprocating manner. A suspended thread guide 3.1 forming the tip of a so-called traverse cam in the traverse plane is arranged upstream of the traverse unit 4. The suspended ceiling thread guide 3.1 then forms an inlet to the winding station 1.1.

The winding bobbin 9 for winding the thread 2.1 at the winding position 1.1 is clamped on the circumference of the driven winding spindle 6.1. The winding spindle 6.1 extends here over all adjacent winding stations 1.2, 1.3 and 1.4, so that the supply threads 2.1 to 2.4 are wound simultaneously at each winding station 1.1 to 1.4.

The contact pressure roller 5 is provided for depositing the thread 2.1 on the surface of the bobbin 8 in the winding station 1.1. The contact pressure roller 5 likewise extends over the entire length of the winding stations 1.1 to 1.4. The yarn 2.1 falls on the surface of the bobbin 8 after being partially wound around the contact pressure roller 5.

The machine frame 10 serves to receive and fix the traversing device 4, the contact pressure roller 5 and the winding spindle 6.1. The winding spindle 6.1 is mounted in a projecting manner in a winding turret 7, which is held in place in such a way that it can rotate in the machine frame 10. The winding turret 7 holds the second winding spindle 6.2 offset by 180 ° with respect to the winding spindle 6.1, in order to be able to carry out continuous winding of the yarn at the winding stations 1.1-1.4. Drive means (not shown here) are assigned to the winding turret 7 and to the winding spindles 6.1, 6.2.

The suspended ceiling yarn guides 3.1-3.4 of the winding stations 1.1-1.4 are formed by deflection rollers 13.1-13.4, respectively, which are freely rotatably mounted and held in place in such a way as to be rotatably mounted on a roller holder 27. The deflection rollers 13.1 to 13.4 each have an open thread running path 26 on their circumferential surface, in which a thread 2.1 to 2.4 is guided by partial winding.

In the yarn direction, suspended ceiling yarn guides 3.1-3.4 are assigned to the yarn guide plate 11. The yarn guide disc 11 is held on the yarn guide disc holder 12 and is connected to a drive mechanism (not shown here). The thread guide plate 12 is held on the projecting end of the winding spindle 6.1 laterally to the winding positions 1.1-1.4. The thread guide plate 12 is also supported on the machine frame 10.

An auxiliary station 14 for threading the yarn into the suspended ceiling guide is arranged between the yarn guide disc 11 and the traversing unit 4 in the winding stations 1.1-1.4. The auxiliary device 14 has a movable threading guide 16, which can be guided in a guide rail 17. The guide rails 17 extend along the winding positions 1.1-1.4. For further explanation of the auxiliary device 14, reference is made below to fig. 2 and 3. Fig. 2 schematically shows a plan view of an exemplary device 14, and fig. 3 schematically shows a side view of an auxiliary device 14 of a winding machine.

The following description applies to both figures as long as none of them is explicitly mentioned.

The threading guides 16 in this embodiment are formed by guide rollers 25 which are mounted freely rotatably. The guide roller 25 has a plurality of circumferential guide grooves 16.1 to 16.4 on its circumferential surface. The number of guide grooves 16.1-16.4 is here equal to the number of yarns 2.1-2.4 of the set of yarns 2. The guide rollers 25 are guided in guide rails 17 which define vertically aligned guide planes 22.

For the explanation of the guide rail 17, reference is made to fig. 3. The guide rail 17 is formed of a plurality of parts. The first guide is located above the overhead thread guides 3.1-3.4. This guide is designated here as the feed rail 17.1. The other part of the guide rail 17, which is located below the overhead thread guides 3.1-3.4, is identified as return rail 17.2. The feed rail 17.1 and the return rail 17.2 are coupled to one another at the threading end 23 by a transverse rail 17.3. The feed rail 17.1 and the return rail 17.2 are coupled to each other at opposite ends by a further transverse rail 17.4, so that a closed guide rail 17 is formed.

The feed rail 17.1 and the return rail 17.2 are arranged in a guide plane 22 penetrating the thread guides 16. For this purpose, the guide rail 17 is arranged in a guide rail arrangement 18, wherein a guide slide 24 supports the thread guides 16. The guide slide 24 is connected to the linear drive mechanism 20. The guide rail arrangement 18, the guide slide 14 and the linear drive 20 then form a drive 19 which penetrates the thread guides 16 in the provided guide rails 17. It is explicitly mentioned here that the configuration of the drive device 19 in this embodiment is exemplary. In principle, other means of moving the threading guides on the guide rails 17 provided are also possible.

As can be taken from the view of fig. 2, the guide rollers 25 with guide grooves 16.1-16.4 are aligned orthogonally to the guide plane 22. The guide grooves 16.1-16.4 extend parallel to the guide plane 22 and preferably have a yarn gap equal to the yarn gap of the yarns 2.1-2.4 on the circumference of the guide disc 11. The guide rail arrangement 18 is arranged next to the roller seats 27 of the deflection rollers 13.1 to 13.4 in such a way that the threading guides 16 can be guided in the feed rail 17.1 above the ceiling-mounted guides 3.1 to 3.4 and in the return rail 17.2 below the ceiling-mounted guides 3.1 to 3.4.

The ceiling-suspended carriers 3.1-3.4 or the deflection rollers 13.1-13.4 are each arranged in a plane, wherein an angle α is formed between the alignment 21 of the ceiling-suspended carriers 3.1-3.4 and the guide plane 22. In this connection, the guide rail arrangement 18 is assigned to the roller block 27 by an inclined position which is inclined at an angle α. The angle alpha is mainly determined by the sum of the yarn gaps on the circumference of the yarn guide disc 11 and the sum of the distances between the suspended ceiling guides 3.1-3.4. The angle alpha is typically in the range of 1 deg. to at most 15 deg.. Large tilting angles are avoided because the yarn deflection is outside the allowed range.

The inventive winder of fig. 1 is shown in an operating condition. In this regard, the auxiliary device 14 in the views of fig. 1 to 3 is in the rest phase. In normal operation of the winding machine in which the threads 2.1-2.4 are continuously wound to bobbins 8, the threading guides 16 remain in place in the rest low position at the end of the return rail 17.2.

To explain the function of the auxiliary device 14 to thread a yarn into a suspended ceiling thread guide 3.1-3.4, reference is made below to fig. 4.1-4.3 and 5.1-5.3. A plan view of the auxiliary device 14 in different operating conditions is shown in fig. 4.1 to 4.3, and a side view of the auxiliary device 14 in different operating conditions is shown in fig. 5.1 to 5.3.

At the beginning of the process, the yarn package 2 for joining to the upstream processing device and the yarn guide disc 11 is guided by the suction gun 15. The suction lance 15 can be guided manually by an operator or in an automated manner by a robot. Once the group of yarns 2 is engaged to the guide disc 11, the yarns are fed to the auxiliary device 14 by means of the suction gun 15. In order to dispense the threads of the thread group 2 into the winding positions 1.1-1.4, the linear drive 20 of the auxiliary device 14 is activated. The threading guides 16 are guided out of their rest position in the return rail 17.2 and are transferred by the transverse rail 17.4 to the feed rail 17.1. The threads 2.1-2.4 are here obtained by guide grooves 16.1-16.4 on the circumference of the guide roll 25. The guide roller 25 is guided by means of a guide slide 24 guided in the feed rail 17.1 to the threading end 23 and is subsequently guided via the transverse rail 17.3 into the return rail 17.2. The movement of the guide slide 24 can be carried out in steps or continuously by the linear drive 20. The thread group 2 is here first guided over the suspended ceiling guides 3.1-3.4. The yarn from the guide roller 25 is kept away from the suspended top thread guide 3.1-3.4 by the suction lance 15 so that the yarn group 2 is guided by the guide roller 25 under the suspended top thread guide 3.1-3.4 by lowering the guide roller 25 in the transition from the feed rail 17.1 to the return rail 17.2. In view of this, the yarn is continuously transferred to the overhead thread guides 3.1-3.4 in a distributed manner on the return run of the guide slide 24. Whereas the ceiling-mounted thread guides 3.1-3.4 are designed as deflection rollers 13.1-13.4 each with an open thread travel rail 26, automatic transfer of the thread can be achieved solely as a result of the movement of the threading thread guides 16. Fig. 4.3 and 5.3 show the distribution and selection of the yarns 2.1-2.4. In the case shown, the threading guides 16 in the return track 17.2 are moved back to their rest position (as shown by the dashed lines). The yarns 2.4, 2.3 have been transferred to the deflection rolls 13.4, 13.3. During the continuous movement of the threading guides 16 in the return track 17.2, the threads 2.2, 2.1 are likewise transferred to the deflection rollers 13.2, 13.1 which are not provided. The selection of the yarn group associated with the winding positions 1.1-1.4 of the winder is then ended. The set of threads for engaging and starting the winding on the winding bobbin is transferred to the winding spindle by further auxiliary devices (not shown here).

Claims

1. A winding machine for winding a plurality of threads to form bobbins, having a plurality of winding stations (1.1-1.4) arranged side by side along at least one winding spindle (6.1) held in position in a projecting manner, having a plurality of overhead yarn guides (3.1-3.4) which are provided upstream of the winding stations (1.1-1.4) in the thread course, having at least one yarn guide disc (11) which is arranged laterally of the winding stations (1.1-1.4) and aligned transversely to the winding spindles (6.1) and is provided upstream of the overhead yarn guides (3.1-3.4) in the thread course, and having an auxiliary device (14) for threading a thread into the overhead yarn guides (3.1-3.4), wherein the auxiliary device (14) has a threading yarn guide (16), the threading carrier has a plurality of guide grooves (16.1-16.4) arranged side by side, wherein the threading carrier (16) can be guided in a guide rail (17) by means of a drive device (19), wherein the guide rail (17) extends along the ceiling carrier (3.1-3.4) and has a feed rail (17.1) and a return rail (17.2), characterized in that the feed rail (17.1) above the ceiling carrier (3.1-3.4) and the return rail (17.2) below the ceiling carrier (3.1-3.4) form a vertically aligned guide plane (22) of the threading carrier (16) and an angle α in the range of 1 ° to 15 ° is formed between the guide plane (22) of the threading carrier (16) and an alignment line (21) of the ceiling carrier (3.1-3.4).

2. Spooling machine as claimed in claim 1, characterized in that the guide slots (16.1-16.4) of the threading guides (16) are aligned parallel to the guide plane (22).

3. Winder according to claim 2, characterized in that the threading guides (16) are formed by guide rollers (25) mounted freely rotatable and aligned with their axes orthogonal to the guide plane (22).

4. Spooling machine as claimed in any of the claims 1 to 3, characterized in that the feed rail (17.1) and the return rail (17.2) are connected to each other at the threading end (23) by a transverse rail (17.3) in order to lower the threading guides (16).

5. Spooling machine as claimed in claim 4, characterized in that the guide rail (17) is inherently closed and the threading guides (16) for threading the yarn can be guided in the loop of the guide rail (17).

6. Spooling machine as claimed in claim 5, characterized in that the guide rail (17) is formed by a guide rail (18) and a guide slide (24) guided in the guide rail (18), wherein the threading guides (16) are held on the guide slide (24).

7. Spooling machine as claimed in claim 6, characterized in that the drive device (19) is formed by a linear drive mechanism (20) coupled to the guide slide (24).

8. Spooling machine as claimed in any of the claims 1 to 3, characterized in that the angle (α) between the guide plane (22) of the threading guides (16) and the alignment (21) of the overhead guides (3.1,3.4) can be determined by the relation of the sum of the yarn gaps of the yarns on the guide disc (11) and the sum of the distances between the overhead guides (3.1-3.4).

9. Spooling machine as claimed in any of the claims 1 to 3, characterized in that the yarn guiding disc (11) and the overhead yarn guides (3.1-3.4) are so arranged in relation to each other that the first or last yarn (2.1-2.4) on the circumference of the yarn guiding disc (11) can be guided parallel to the alignment (21) of the overhead yarn guides (3.1, 3.4).

10. Spooling machine as claimed in any of the claims 1 to 3, characterized in that the suspended ceiling thread guide (3.1-3.4) is formed by rotatably mounted deflection rollers (13.1-13.4) which each have an open thread running path (26) for guiding the thread on the circumference.