CN114929606B

CN114929606B - Winding machine

Info

Publication number: CN114929606B
Application number: CN202180009054.2A
Authority: CN
Inventors: R·沃斯; B·克鲁格; A·哈米德; J·托斯
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2020-01-18
Filing date: 2021-01-13
Publication date: 2024-01-05
Anticipated expiration: 2041-01-13
Also published as: WO2021144300A1; DE102020000286A1; JP7401684B2; DE112021000612A5; CN114929606A; JP2023511089A

Abstract

The invention relates to a winding machine having a plurality of winding positions (1.1-1.5) for winding a plurality of threads (2) onto bobbins (8). The winding positions (1.1-1.5) are arranged adjacent and parallel to at least one winding spindle (6) held in a protruding manner, wherein an overhead yarn guide (3) is arranged before each winding position in the yarn path. The overhead wire guide (3) is movably held on a guide rail (14) and can be selectively guided into a working position in the winding position (1.1-1.5) or into a positioning position outside the winding position (1.1-1.5). For selecting and receiving a thread (2), a guide rail (14) for guiding the overhead thread guide (3) is formed at least by a curved guide (14.2) and at least one linear guide (14.1) along the winding spindle (6), wherein the curved guide (14.2) of the guide rail (14) extends beyond the spindle end of the winding spindle (6).

Description

Winding machine

Technical Field

The present invention relates to a winding machine having a plurality of winding positions for winding a plurality of yarns to form a bobbin.

Background

In the melt spinning process, the filaments produced in the form of filament sheets are wound in a parallel fashion at the end of the process to form bobbins. For this purpose, a winding machine is used, which has a plurality of winding positions arranged along winding spindles, which are held in a protruding manner on the machine frame. Winding spindles are used to accommodate bobbins for simultaneously winding them. The threads are laid down in a cross-winding manner, so that each thread is individually guided back and forth in a winding position by means of a thread laying unit before being laid down on the surface of the bobbin. The thread web is fed into the winding position and separated by a plurality of devices known as overhead thread guides, which are each arranged upstream of the thread laying unit in the winding position. The device, which is called a laying triangle, for guiding the thread here is therefore stretched between the overhead thread guide and the downstream thread laying unit.

In order to distribute the thread between the winding positions of the winding machine and in order to be able to thread the thread at the beginning of the process, the thread sheet is usually initially guided by means of a movable suction jet in order to keep the thread ready for threading into the overhead thread guide. In this case, the two variants of the winder differ fundamentally.

In one of the variants, a mobile auxiliary device is used for guiding the thread and threading the thread into the overhead thread guide. Such a winding machine is disclosed, for example, in WO98/28217 or EP2497732A 2. In the known winding machine, the auxiliary device is formed by a movable threading guide with a plurality of guide grooves arranged adjacent to each other. The threading guides are used to receive the thread pieces at the beginning of the process, which are guided by suction jets and separate the thread pieces of the thread pieces by means of movement along a guide path and transfer them to the overhead guides. This necessitates a relatively complex guide path and drive means to separate and thread the lead-in wire sheet. In this regard, such auxiliary devices are particularly prone to error.

In another variant of the winding machine, no additional movement aids are required for separating and threading the threading wire. Such a winding machine is disclosed, for example, in DE102014220875 A1. In the known winding machine, the overhead wire guide is held movable on the guide rail and can be guided between a working position out of the winding position and a positioning position out of the winding position into the end side of the winding machine. In the positioning position, the overhead wire guides are positioned immediately adjacent to each other for threading the lead-in wire.

However, in the production of synthetic threads, it is now desirable to wind as many threads as possible simultaneously in a winder. Thus, a large number of overhead wire guides must be rotated from their operating position into a positioning position. In this case, however, it must be ensured that the overhead wire guides remain as close as possible to the operating end of the winding machine in order to separate and thread the wires of the threading wire sheet. In general winding machines, the overhead wire guides will have to be arranged adjacent to each other in rows, so that the separation and threading of the wire into the overhead wire guides remote from the operating end can still be achieved only with the aid of auxiliary devices.

Disclosure of Invention

The object of the present invention is now to provide a generic winding machine in which the threads of the thread segments can be separated and threaded into an overhead thread guide both manually and automatically and in a very easy-to-handle manner.

This object is achieved according to the invention in that the guide rail for guiding the overhead wire guide has at least one linear guide along the winding spindle and has a curved guide, and that the curved guide of the guide rail extends beyond the spindle end of the winding spindle.

The invention thus has the particular advantage that the overhead wire guides can be held in the guide rail in their positioning position with a high degree of deviation from one another. As a result, it is also advantageously possible to prevent the guide rail from protruding into the working gallery. The bending of the guide rail allows the overhead wire guide to be moved from a working position, for example a row-like horizontal orientation, into a positioning position, at least partially vertically oriented. In particular, the bending of the guide rail creates an offset between the overhead guides, which makes the separation and threading of the wires easier.

In order to place a large number of overhead wire guides in their positioning position, it is therefore provided that the guide rail has a straight guide end at one end of the curved guide, which has a stop for its positioning position to one overhead wire guide. This makes it possible for the overhead wire guide to be in a positioning position.

In order to move and guide the overhead wire guides, the following inventive development is particularly advantageous, in which each overhead wire guide is assigned a separate one of a plurality of guide carriages which are guided on guide rails and are connected to one another by a flexible belt, the length of which is designed to correspond to the distance between adjacent winding positions. Thus, all overhead wire guides can be moved together on the guide rail by actively displacing the first overhead wire guide or the last overhead wire guide by means of the guide carriage. The flexible connection of the guide carriage then allows all overhead wire guides to be moved together on the guide rail. In this case, the elasticity of the belt allows, on the one hand, to position the overhead wire guide in its working position when the belt is pulled out and, on the other hand, to push it into its positioning position together with the overhead wire guide when the belt is in the undulating configuration.

The operating position of the overhead wire guide can in this case advantageously be achieved by a second stop, which forms the free end of the linear guide of the guide rail.

In order to allow automatic separation and threading of the thread guide webs by movement of the overhead thread guides during the transfer from the positioning position into the working position, the following inventive development is particularly advantageous, in which each overhead thread guide is formed by a freely rotatable deflection roller with an open thread moving rail and in which the deflection roller is held in a protruding manner on the guide carriage by means of a holding rod having various lengths. Thus, due to the different lengths of the retaining bars, the offset between the deflection rollers can be set, which corresponds correspondingly to the wire spacing between adjacent wires within the wire sheet. Thus, each deflection roller can receive the wire from the wire sheet in relation to the winding position.

For this purpose, the linear guide of the guide rail is arranged obliquely to the spindle axis of the winding spindle, so that the deflection roller is held in the operating position in a plane parallel to the spindle axis, despite the different holding bars. This ensures the same conditions for winding the yarn to form a bobbin in each winding position.

In order to produce a defined thread distance in the thread piece into which the deflection roller is moved, the following development of the invention is preferably realized in that a freely rotatable fixed guide roller for guiding the thread piece is provided, which is assigned to the deflection roller held in the positioning position for separating and positioning the threads.

This particularly advantageously allows the thread web to be unwound at a defined mutual thread distance of adjacent threads by arranging the driven thread guide disk upstream of the guide roller and the thread guide disk and the guide roller defining a thread movement plane of the thread web in the region between the operating position and the positioning position of the deflection roller.

For the automatic threading operation, a development of the invention is provided in which an outside overhead wire guide is assigned an actuator which can be used to guide the overhead wire guide on the guide rail.

The actuator is preferably realized by defining the driving means, e.g. a cylinder without a piston rod.

In this case, the actuator may be controlled by a control unit, wherein the control unit is connected to the control device or to the at least one operator panel.

Drawings

For a further explanation of the invention, embodiments of the winding machine according to the invention are now explained in more detail below with reference to the accompanying drawings, in which:

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

figure 2 schematically shows a top view of the embodiment of figure 1,

figure 3 schematically shows a front view of the embodiment of figure 1,

figures 4.1 and 4.2 schematically show side view details of the embodiment of figure 1 in various operating conditions,

figures 5.1 and 5.2 schematically show details of the top view of the embodiment of figure 1 in various operating conditions,

fig. 6 schematically illustrates a top view of the overhead wire guide of the embodiment of fig. 1 in a first winding position.

Detailed Description

Embodiments of a winder according to the invention are schematically shown in the various views of fig. 1, 2 and 3. Fig. 1 shows an embodiment in side view, fig. 2 in top view and fig. 3 in front view. In the event that one of the figures is not explicitly mentioned, the following description applies to all the figures.

In this embodiment, the winding machine according to the invention has a total of five winding positions 1.1 to 1.5, which are arranged next to one another in the machine frame 10. Winding positions 1.1 to 1.5 are arranged along winding spindles 6 held in a protruding manner. The individual threads of the thread segments 2 are wound in each winding position 1.1 to 1.4 to form bobbins 8, the bobbins 8 being held side by side on the winding spindle 6. The number of winding positions 1.1 to 1.5 and the number of threads of the thread segments 2 are exemplary in this case. In principle, such a winding machine can have up to 16 winding positions.

The winding positions 1.1 to 1.5 have the same design and each have a thread depositing unit 4. Each wire laying unit 4 comprises a guide mechanism (not shown in more detail here) to guide the wire assigned to the winding position 1.1 to 1.5 back and forth within the laying stroke. The thread laying unit 4 can be designed, for example, by a reverse-threaded rod traversing mechanism, a belt traversing mechanism or a wing traversing mechanism.

For parallel winding of the threads of the thread web 2, a winding tube 9 is assigned to each winding position 1.1 to 1.4 on the circumference of the driven winding spindle 6. For this purpose, the winding tube 9 is clamped to the circumferential surface of the winding spindle 6. In this case, the winding spindle 6 extends through all winding positions 1.1 to 1.5, so that the thread is wound in parallel in the winding positions 1.1 to 1.5 to form a bobbin 8.

For depositing the thread onto the surface of the bobbin, a pressure roller 5 is provided, which runs parallel to the winding spindle 6 and is assigned to the winding position 1.1 to 1.5. The pressure roller 5 is arranged in the region between the thread laying unit 4 and the winding spindle 6. The frame 10 is used to receive and fix the wire laying unit 4, the pressure roller 5 and the winding spindle 6. The winding spindle 6 is mounted in a projecting manner on a winding turret 7, which itself is rotatably held in a frame 10. The winding turret 7 holds a second winding spindle 6 arranged offset by 180 ° with respect to the first winding spindle 6. The rotation of the winding turret 7 allows the winding spindles 6 to be guided alternately into the winding and replacement areas, so that the thread can be wound continuously in winding positions 1.1 to 1.5 to form a bobbin 8. The winding spindle 6 and the winding turret 7 are both connected to a drive (not shown here).

In order to accommodate and separate the thread segments 2 in the middle of the winding positions 1.1 to 1.5, a respective overhead thread guide 3 is assigned to each winding position 1.1 to 1.5 above the thread laying unit 4. The overhead wire guides 3 distributed in the middle of the winding positions 1.1 to 1.5 then form inlets to the respective winding positions 1.1 to 1.5.

Each overhead wire guide 3 is held on a guide rail 14 by a movable guide carriage 16. The guide rail 14 is arranged above the frame 10 and extends with a linear guide 14.1 along the winding spindle 6. The linear guide 14.1 is followed by a curved guide 14.2 of the guide rail 14, which extends beyond the spindle end of the winding spindle 6 toward the operating end. The curved guide 14.2 is followed by a linear guide end 14.3 which is oriented offset by about 90 ° relative to the linear guide 14.1. The first stop 15.1 is formed on the guide end 14.3 of the guide rail 14. The second stop 15.2 is arranged on the opposite free end of the linear guide 14.1 of the guide rail 14. The overhead wire guide 3 can then be guided back and forth between the working position and the positioning position by the movement of the guide carriage 16 along the guide rail 14. In fig. 1, 2 and 3, an overhead wire guide 3 is shown in its working position.

In this embodiment, the overhead wire guide 3 is formed by respective deflection rollers 13 which are mounted in a freely rotatable manner. For explanation, reference is also made to fig. 6, which shows a top view of the overhead wire guide 3 in the first winding position 1.1. The deflection roller 13 has an open thread running rail 13.1 on its circumference, in which the threads of the thread piece can be guided by means of a partial loop.

The deflection roller 13 is connected to the guide carriage 16 by a holding rod 17. In this case, the length of the holding rod 17 of the deflection roller 13 is designed differently, as can be seen from the illustration in fig. 2. The holding rod 17 in the winding position 1.1 then has a greater length than the holding rod 17 in the adjacent winding positions 1.2 to 1.5. The difference in length of the retaining bars 17 is designed according to the wire spacing of the wires within the wire sheet 2, so that each deflection roller 13 separates and receives one wire in the wire sheet 2 when the deflection roller 13 is moving from the respective positioning position to the working position. In its operating position, the deflection roller 13 is then oriented parallel to the spindle axis 6.1 of the winding spindle 6, and the linear guide 14.1 of the guide rail 14 extends at an angle to the spindle axis 6.1 of the winding spindle 6. In fig. 2, the angle between the guide rail 14 and the spindle shaft 6.1 is denoted by the reference sign α.

In this embodiment, the guide carriage 16 of the winding position 1.1 is connected to an actuator 20. The actuator 20 is realized by a piston rod-free cylinder, which extends parallel to the linear guide 14.1 of the guide rail. The actuator 20 is connected to a control unit 21, which can be activated by means of an operator panel 23. The actuator 20 can also be realized, for example, by a linear electric drive, which extends parallel to the guide rail 14 and moves the guide carriage 16 of the winding position 1.1. The actuator 20 and the guide rail 14 are supported on the frame 20 by a support 25.

As can be seen from the illustration of fig. 1, the guide carriages 16 are each connected to one another by a flexible belt 18. The length of the flexible belt 18 is set such that in the pulled-out state each guide carriage 16 is in the operating position of the associated overhead wire guide 3 in the winding position 1.1 to 1.5.

The godet 11 is arranged upstream of the deflection roller 13 in the thread direction. The wire guide disc 11 is held on the wire guide disc seat 12 and is coupled to a driving device (not shown here). The wire guide plate holder 12 is held laterally adjacent to the winding positions 1.1 to 1.5 on the projecting end of the winding spindle 6. In this case, the godet mount 12 may be supported on the frame 10.

In the embodiment of the winding machine according to the invention shown in fig. 1 to 3, the individual threads of the thread web 2 are wound continuously in winding positions 1.1 to 1.5 to form bobbins 8. However, at the beginning of the process or in the event of a process interruption, the thread piece 2 needs to be threaded into the winding position 1.1-1.5. In order to be able to perform this operation, the guide roller 19 is arranged to be freely rotatably mounted on the frame 10 below the overhead wire guide 3. The guide rollers 19 are arranged such that the thread movement plane defined between the guide disc 11 and the guide rollers 19 is set, which passes through the movement path of the overhead thread guide 3 and is located between the working position and the positioning position of the overhead thread guide 3. The guide roller 19 is then only used to receive the thread piece when the thread is being separated and threaded into the overhead thread guide 3.

For further explanation, reference is now also made to fig. 4.1, 4.2, 5.1 and 5.2. Fig. 4.1 and 4.2 show side view details of the embodiment of fig. 1 in different operating states, fig. 5.1 and 5.2 show top views of the illustrations of fig. 4.1 and 4.2.

Fig. 4.1 and 5.1 show the operating state in which the thread piece 2 is guided by the suction jet 24 to allow separation and threading into the overhead thread guide 3. For this purpose, the overhead wire guides 3 are guided by guide carriages 16 into the respective positioning positions outside the winding positions 1.1 to 1.5. For this purpose, the guide carriage 16 of the winding position 1.1 connected to the actuator 20 is guided by the actuator 20 along the linear guide 14.1 of the guide rail 14. The adjacent guide carriages 16 are thereby displaced, whereby the distance between the guide carriages 16 is reduced to a minimum in view of the elasticity of the belt 18. All the guide carriages 16 are thus moved to the curved guide 14.2 of the guide rail 14 until the guide carriage 16 in the winding position 1.5 has reached the stop 15.1 on the guide end 14.3. This is shown in fig. 4.1 and 5.1. Once the overhead wire guide 3 remains in the positioning position, the wire sheet 2 is positioned onto the wire guide plate 11 and the peripheral surface of the guide roller 19 by the suction jet 24. The guide roller 19 defines, together with the guide disc 11, a thread moving plane, which is traversed by the overhead thread guide 3 when moving from its positioning position to its working position. For this purpose, the guide roller 19 is held on the machine frame 10 in a substantially axially parallel manner with respect to the deflection roller 13. The guide roller 19 has a guide groove on its circumferential surface that forms a yarn convergence point. The wire then moves in a ray-like fashion from the circumference of the wire guide disc 11 to the guide roller 19. The guide rollers 19 are arranged below the deflection roller 13 at a predetermined pitch. In this way, a defined thread distance is set in the thread piece in the region of the deflection roller 13.

As can be seen in particular from the illustrations in fig. 5.1 and 5.2, the deflection roller 13 is connected to the guide carriage 16 by means of retaining bars 17 of different lengths. The guide rail 14 is also arranged at an angle to the spindle axis 6.1 with respect to the linear guide 14.1. As a result, the deflection roller 13 acts with an offset on the thread piece 2 guided between the thread guide disk 11 and the guide roller 22. The offset amounts to the thread spacing between the threads in the thread segments 2, so that by the movement of the guide carriage 16 each deflection roller 13 receives one of the threads of the thread segments 2 and guides it to the winding position 1.1 to 1.5. For this purpose, the guide carriage 16 of the winding position 1.1 is moved back to the winding positions 1.1 to 1.5 by the actuator 20.

The guide carriage 16 moves as far as the stop 15.2 at the free end of the guide rail 14. As a result of the engagement by means of the element 18, the subsequent guide carriage and the deflection roller 13 fastened thereto are brought along and each receive one thread in turn from the thread piece 2. This is shown in fig. 4.2 and 5.2.

During the yarn separation of the yarn sheet 2 and the threading into the overhead yarn guide 3, the yarn sheet 2 is guided by the suction jet 24. The suction jet 24 can in this case be guided by an automated actuating mechanism. In this case, the control unit 21 of the actuator 20 is connected to the control device. For this purpose, fig. 3 shows the control device 22 by way of example in broken line.

In principle, however, the operator can also actuate the suction injector 24. In the embodiment shown in fig. 3, the control unit 21 of the actuator 20 is coupled to an operator panel 23 at the operating end of the winder. Thus, the actuator 20 for moving the guide carriage 16 can be activated by means of a contact measuring head on the operator panel 23. In this connection, the winding machine of the present invention is suitable for both automation and manual operation.

In the illustrated embodiment of the winding machine according to the invention, the guide rail for guiding the overhead wire guide with the curved guide has such a shape that the overhead wire guide is guided vertically downwards at the winding machine end side. It goes without saying that a guide rail curvature shaped in this way, which allows the overhead wire guide to be guided in opposite upward directions or laterally at an angle offset from the winding machine end, is also covered by the invention. For example, the guidance of the overhead wire guide at a position higher than the working position of the overhead wire guide can make threading of the wire sheet fed from the wire guide disc easier.

In this embodiment, the overhead wire guide 3 is designed in the form of a deflection roller 13. In principle, however, the overhead wire guide 3 can also be realized by a ceramic wire eyelet or a ceramic guide slot. The deflection roller shown in fig. 1 to 3 can thus be replaced smoothly by such an embodiment of an overhead wire guide.

Furthermore, the guide rail can also be realized in that the curved guide and the straight guide extend in a horizontal plane. The overhead wire guide will thus be maintained in the positioning position without a height difference.

Claims

1. A winding machine having a plurality of winding positions (1.1-1.5) for winding a plurality of threads to form a bobbin (8) which is wound side by side in a parallel manner on a driven winding spindle (6), and having a plurality of thread laying units (4) which are arranged distributed between the winding positions and a plurality of overhead thread guides (3), the overhead thread guides (3) being arranged upstream of the thread laying units (4) and being held movably on a guide rail (14) and being able to be guided selectively into an operating position within the winding positions (1.1-1.5) or into a positioning position outside the winding positions (1.1-1.5), characterized in that the guide rail (14) has a curved guide (14.2) and at least one linear guide (14.1) along the winding spindle (6) for guiding the overhead thread guides (3), and that the curved guide (14.2) of the guide rail (14) extends beyond the winding spindle (6) end.

2. The winding machine according to claim 1, characterized in that the guide rail (14) has a linear guide end (14.3) at one end of the curved guide (14.2), the linear guide end (14.3) having a stop (15.1) for one of the overhead wire guides (3) for the positioning position.

3. The winding machine according to claim 1, characterized in that each overhead wire guide (3) is assigned a single guide carriage (16) from a plurality of guide carriages (16) which are guided on the guide rail (14) and are interconnected by a flexible belt (18), the length of which is designed to correspond to the spacing between adjacent winding positions (1.1-1.5).

4. A winding machine according to claim 3, characterized in that the linear guide (14.1) of the guide rail (14) has a second stop (15.2) for one of the overhead wire guides (3) at the free end for the working position.

5. A winding machine according to claim 3, characterized in that the overhead wire guides (3) are each formed by freely rotatable deflection rollers (13) with an open wire moving rail (13.1), and that the deflection rollers (13) are held in a protruding manner on the guide carriage (16) by means of holding bars (17) with various lengths.

6. A winding machine according to claim 5, characterized in that the linear guide (14.1) of the guide rail (14) is arranged obliquely with respect to the spindle axis (6.1) of the winding spindle (6) in such a way that the deflection roller (13) is held in the operating position in a plane parallel to the spindle axis (6.1) despite the different holding bars (17).

7. A winding machine according to claim 5, characterized in that a freely rotatable fixed guide roller (19) is provided for guiding the wire sheet (2), which guide roller (19) is assigned to the deflection roller (13) held in the positioning position for separating and positioning the wire.

8. A winder according to claim 7, characterised in that the guide roller (19) is arranged downstream of the driven godet (11) and that the plane of thread movement of the thread sheet is definable by the godet (11) and the guide roller (19) in the region between the operating position and the positioning position of the deflection roller (13).

9. The winding machine according to any one of claims 1 to 8, wherein one of the outer overhead wire guides (3) is assigned an actuator (20), which actuator (20) can be used to guide the overhead wire guide (3) on the guide rail (14).

10. The winding machine according to claim 9, characterized in that the actuator (20) is controllable by a control unit (21), wherein the control unit (21) is connected to a control device (22) or an operator panel (23).