CN114929606A

CN114929606A - Winding machine

Info

Publication number: CN114929606A
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: 2022-08-19
Anticipated expiration: 2041-01-13
Also published as: DE102020000286A1; CN114929606B; DE112021000612A5; JP2023511089A; WO2021144300A1; JP7401684B2

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 a bobbin (8). The winding positions (1.1-1.5) are arranged adjacent to each other in parallel along at least one winding spindle (6) held in a protruding manner, wherein an overhead thread guide (3) is arranged before each winding position in the thread path. The overhead thread guide (3) is held displaceably on a guide rail (14) and can be selectively guided into an operating 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 the 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

The invention relates to a winding machine having a plurality of winding positions for winding a plurality of threads to form bobbins, according to the preamble of claim 1.

In the melt spinning process, the threads produced in the form of thread sheets are wound in a parallel manner at the end of the process to form bobbins. For this purpose, winding machines are used which have a plurality of winding positions arranged along the winding spindles, which are held in a projecting manner on a machine frame. Winding spindles are used to receive bobbins for simultaneously winding them. The threads are deposited in a cross-wound manner, so that each thread is guided individually back and forth in the winding position by means of the thread depositing unit before being deposited on the surface of the bobbin. The thread pieces are fed into the winding position and separated by a plurality of devices, known as overhead thread guides, which are arranged upstream of the thread laying unit in the winding position. A device for guiding the thread, which is referred to as a laying triangle, therefore runs 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 to be able to thread the thread at the beginning of the process, the thread sheet is generally initially guided by means of a movable suction jet 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 mobility assistance device is used for guiding and threading the wire into the overhead wire guide. Such winding machines are known, for example, from 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 slots arranged adjacent to one another. The threading guide is used to receive the thread sheet at the beginning of the process, is guided by the suction jet and separates the thread sheets of the thread sheet by means of a movement along a guide path and transfers them to the overhead guide. This necessitates a relatively complex guide path and drive for separating and threading the thread sheet. In this respect, such auxiliary devices are particularly prone to errors.

In a further variant of the winding machine, no additional mobility aids are required for separating and threading the thread. Such a winding machine is known, for example, from DE102014220875a 1. In the known winding machine, the overhead thread guide is movably held on a guide rail and can be guided between an operating position out of the winding position and a positioning position out of the winding position into the end of the winding machine. In the positioning position, the overhead thread guides are positioned next to one another in order to pass the introduction thread.

In the production of synthetic threads, however, it is now desirable to wind as many threads simultaneously in a winder as possible. Therefore, a large number of overhead thread guides must be transferred from their operating position into the positioning position. In this case, however, it must be ensured that the overhead thread guide is held as close as possible to the operating end of the winding machine in order to separate and thread the threads of the thread sheet. In conventional winding machines, the overhead thread guides would have to be arranged next to one another in a row, so that the separation and threading of the threads into the overhead thread guides remote from the operating end can still be effected only by means of auxiliary devices.

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

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

Advantageous developments of the invention are defined by the features and combinations of features of the dependent claims.

The invention therefore has the particular advantage that the overhead thread guides can be held in the guide rails with a height offset from one another in their positioning position. As a result, it is also advantageously possible to prevent the guide rail from protruding into the working gallery. The curvature of the guide rail allows the overhead thread guide to be rotated from a working position, for example, in a row-like horizontal orientation, into a positioning position, which is at least partially vertically oriented. In particular, the bending of the guide rail produces an offset between the overhead thread guides, which makes the separation and threading of the threads easier.

In order to place a large number of overhead thread 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 attachment to one of the overhead thread guides for the positioning position. This makes it possible to position the overhead guide in the positioning position.

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

The operating position of the overhead thread 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 pieces by movement of the overhead thread guides during the passage from the positioning position into the working position, the development of the invention is particularly advantageous in that each overhead thread guide is formed by a freely rotatable deflection roller with an open thread running rail and in that case the deflection roller is held in a projecting manner on the guide carriage by holding rods of various lengths. Thus, since the holding bars are different in length, an offset between the deflection rollers can be set, which accordingly corresponds to the thread spacing between adjacent threads in the thread sheet. Each deflection roller can thus receive the thread from the thread sheet in relation to this winding position.

For this purpose, the linear guides of the guide rails are arranged at an angle to the spindle axes of the winding spindles, so that the deflecting rollers are held in a plane parallel to the spindle axes in the operating position, despite the different holding bars. This ensures the same conditions for the winding of the thread to form a bobbin in each winding position.

In order to produce a defined thread spacing into which the deflection rollers move in the thread plate, a development of the invention is preferably achieved in that a freely rotatable stationary guide roller for guiding the thread plate is provided, which is assigned to the deflection roller held in the positioning position for separating and positioning the thread.

This particularly advantageously allows the thread pieces to be spread apart at a defined mutual thread spacing of adjacent threads by arranging the driven godet upstream of the guide roller and defining the thread movement plane of the thread pieces by the godet and the guide roller in the region between the operating position and the positioning position of the deflection roller.

For the automation of the threading operation, the invention provides a development in which an outer overhead thread guide is assigned an actuator which can be used to guide the overhead thread guide on the guide rail.

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

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

To further explain the invention, an embodiment of a winding machine according to the invention is 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 details of the side view of the embodiment of figure 1 in various operating conditions,

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

fig. 6 schematically illustrates a top view of the overhead guidewire device of the embodiment of fig. 1 in a first, wound position.

An embodiment of a winding machine according to the invention is schematically shown in the various views of fig. 1, 2 and 3. Fig. 1 shows the embodiment in a side view, fig. 2 in a top view and fig. 3 in a front view. The following description applies to all figures without explicitly mentioning one of them.

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 side by side in the machine frame 10. The winding positions 1.1 to 1.5 are arranged along the winding spindles 6 which are held in a projecting manner. The individual threads of the thread plate 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 sheet 2 are exemplary in this case. In principle, such a winding machine can have up to 16 winding positions.

The winding stations 1.1 to 1.5 are of identical design and each have a thread laying unit 4. Each thread depositing unit 4 contains a guide mechanism (not shown in greater detail here) for guiding the threads assigned to the winding positions 1.1 to 1.5 back and forth within the depositing 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 disk 2, each winding position 1.1 to 1.4 is assigned a winding bobbin 9 on the circumference of the driven winding spindle 6. For this purpose, the winding bobbin 9 is clamped to the circumferential surface of the winding spindle 6. In this case, the winding spindles 6 extend through all winding positions 1.1 to 1.5, so that the threads are wound in parallel in the winding positions 1.1 to 1.5 to form bobbins 8.

In order to deposit the thread onto the bobbin surface, a pressure roller 5 is provided, which runs parallel to the winding spindle 6 and is assigned to the winding positions 1.1 to 1.5. A pressure roller 5 is arranged in the region between the thread laying unit 4 and the winding spindle 6. The machine frame 10 is used to receive and fix the thread 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 machine frame 10. The winding turret 7 holds a second winding spindle 6, which is 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 alternately guided into the winding zone and into the change zone, so that the thread can be wound continuously in the winding positions 1.1 to 1.5 to form bobbins 8. Both the winding spindle 6 and the winding turret 7 are connected to a drive (not shown here).

In order to accommodate and separate the thread sheet 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 thread guides 3 distributed in the middle of the winding positions 1.1 to 1.5 then form the entry to the respective winding position 1.1 to 1.5.

Each overhead thread guide 3 is held on a guide rail 14 by a movable guide carriage 16. The guide rail 14 is arranged above the machine 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 straight guide end 14.3, which is oriented offset by approximately 90 ° with respect to the straight guide 14.1. A first stop 15.1 is formed on the guide end 14.3 of the guide rail 14. The second stop 15.2 is arranged at the opposite free end of the linear guide 14.1 of the guide rail 14. The overhead thread guide 3 can then be guided back and forth between the operating position and the positioning position by a movement of the guide carriage 16 along the guide rail 14. Fig. 1, 2 and 3 show the overhead thread guide 3 in its operating position.

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

The deflection roller 13 is connected to the guide carriage 16 by a holding rod 17. In this case, the length of the retaining bar 17 of the deflection roller 13 is designed to be different, as can be seen from the illustration of fig. 2. The holding rod 17 in the winding position 1.1 then has a greater length than the holding rods 17 of the adjacent winding positions 1.2 to 1.5. The difference in length of the retaining bars 17 is designed according to the thread spacing of the threads in the thread sheet 2 so that each deflection roller 13 separates and receives one thread in the thread sheet 2 when the deflection rollers 13 are moving from the respective positioning position to the working position. The deflection roller 13 is then oriented parallel to the spindle axis 6.1 of the winding spindle 6 in its operating position, the linear guide 14.1 of the guide rail 14 extending 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 axis 6.1 is designated by the reference character 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 cylinder without a piston rod, 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 displaces the guide carriage 16 in the winding position 1.1. The actuator 20 and the guide rail 14 are supported on the frame 20 by a mount 25.

As can be seen from the illustration in fig. 1, the guide carriages 16 are connected to one another by flexible strips 18. The length of the flexible band 18 is set such that in the pulled-out state each guide carriage 16 is in the operating position of the associated overhead thread 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 course. The godet 11 is held on a godet holder 12 and is coupled to a drive (not shown here). The thread guide plate 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 guide wire reel seat 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 sheet 2 are wound continuously in the winding positions 1.1 to 1.5 to form bobbins 8. However, at the beginning of the process or in the case of an interruption of the process, the thread sheet 2 needs to be threaded into the winding position 1.1 to 1.5. In order to be able to perform this, the guide roller 19 is arranged so as to be freely rotatably mounted on the machine frame 10 below the overhead thread guide 3. The guide rollers 19 are arranged such that a thread movement plane defined between the godet 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 operating position and the positioning position of the overhead thread guide 3. The guide rollers 19 are then only used to receive the thread pieces while the threads are 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 a detail from the side view of the embodiment from fig. 1 in different operating states, and fig. 5.1 and 5.2 show a top view of the illustration from fig. 4.1 and 4.2.

Fig. 4.1 and 5.1 show the operating state, in which the thread plate 2 is guided by the suction jet 24 to allow separation and threading into the overhead thread guide 3. For this purpose, the overhead thread guide 3 is guided by the guide carriage 16 into the respective positioning position outside the winding positions 1.1 to 1.5. For this purpose, the guide carriage 16 of the winding position 1.1, which is 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 thus displaced, with the spacing between the guide carriages 16 being reduced to a minimum in view of the elasticity of the belt 18. All 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 thread guide 3 is held in the positioning position, the thread sheet 2 is positioned by the suction jet 24 onto the circumference of the godet 11 and the guide roller 19. The guide rollers 19 define, together with the godet 11, a thread movement plane, which is traversed by the overhead thread guide 3 when moving from its positioning position into the operating position. For this purpose, the guide rollers 19 are held on the machine frame 10 in a substantially parallel manner with respect to the axial direction of the deflection rollers 13. The guide roller 19 has a guide groove on its circumferential surface forming a convergence point of the yarn. The thread then moves in a ray-like manner from the circumference of the godet 11 to the guide roller 19. The guide rollers 19 are arranged at a predetermined distance below the deflection roller 13. In this way, a predetermined thread spacing is set in the thread sheet in the region of the deflection roller 13.

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

The guide carriage 16 moves as far as the stop 15.2 at the free end of the guide rail 14. Due to the engagement by means of the device 18, the subsequent guide carriages and the deflection rollers 13 fastened thereto are entrained and each receive one thread in turn from the thread sheet 2. This is shown in fig. 4.2 and 5.2.

During the separation and threading of the thread of thread sheet 2 into the overhead thread guide 3, thread sheet 2 is guided by suction jet 24. The suction jet 24 can in this case be guided by an automated operating 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 the form of a dashed line.

In principle, however, the operator can also actuate the suction jet 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 respect, the winding machine according to the invention is suitable both for automation and for manual operation.

In the exemplary embodiment of the winding machine according to the invention, the guide rail for guiding the overhead thread guide with the curved guide has a shape in which the overhead thread guide is guided vertically downwards on the winding machine end side. It goes without saying that a curved section of the guide rail shaped in this way, which allows the overhead thread guide to be guided in the opposite upward direction or laterally at the winder end side offset by an angle, is also covered by the invention. For example, the guidance of the overhead thread guide at a position above the operating position of the overhead thread guide makes it easier to thread the thread piece fed from the thread guide plate.

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

Furthermore, the guide rail can also be embodied in such a way that the curved guide and the linear guide extend in a horizontal plane. The overhead thread guide can therefore be held in the positioning position without height differences.

Claims

1. A winding machine having a plurality of winding positions (1.1-1.5) for winding a plurality of threads (2) to form bobbins (8) which are wound side by side in a parallel manner on driven winding spindles (6) and which have a plurality of thread depositing units (4) which are arranged in a distributed manner between the winding positions and a plurality of overhead thread guides (3), which overhead thread guides (3) are arranged upstream of the thread depositing units (4) and are movably held on a guide rail (14) and can be selectively guided into a working position in 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) for guiding the overhead thread guides (3) has a curved guide (14.2) and at least one linear guide (14.1) along the winding spindles (6), and the curved guide (14.2) of the guide rail (14) extends beyond the spindle end of the winding spindle (6).

2. Spooling machine as claimed in 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 the positioning position for one of the overhead thread guides (3).

3. Spooling machine as claimed in claim 1 or 2, characterized in that each overhead thread guide (3) is assigned a separate guide carriage (16) from a plurality of guide carriages (16) which are guided on the guide rail (14) and are connected to one another by means of a flexible band (18) whose length is designed to correspond to the spacing between adjacent spooling positions (1.1-1.5).

4. Spooling machine as claimed in claim 3, characterized in that the linear guide (14.1) of the guide rail (14) has a second stop (15.2) at the free end for one of the overhead thread guides (3) in the operating position.

5. Spooling machine as claimed in claim 3 or 4, characterized in that the overhead thread guides (3) are each formed by a freely rotatable deflection roller (13) with an open thread running rail (13.1), and that the deflection roller (3) is held in a projecting manner on the guide carriage (16) by holding bars (17) of various lengths.

6. Spooling machine as claimed in 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 a plane parallel to the spindle axis (6.1) in the operating position despite a different holding lever (17).

7. Spooling machine as claimed in claim 5 or 6, characterized in that freely rotatable stationary guide rollers (19) are provided for guiding the thread sheet (2), which guide rollers (19) are assigned to the deflection rollers (13) held in the positioning position for separating and positioning the thread.

8. Spooling machine as claimed in claim 7, characterized in that the guide roller (19) is arranged downstream of the driven godet (11) and that the thread movement plane of the thread sheet can be defined 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. Spooling machine as claimed in any of the claims 1 to 8, characterized in that an outer overhead thread guide (3) is assigned an actuator (20), which actuator (20) can be used to guide the overhead thread guide (3) on the guide rail (14).

10. Spooling machine as claimed in claim 8, characterized in that the actuator (20) can be controlled by means of a control unit (21), wherein the control unit (21) is connected to a control device (22) or an operator panel (23).