WO2021018679A1

WO2021018679A1 - Winding machine

Info

Publication number: WO2021018679A1
Application number: PCT/EP2020/070633
Authority: WO
Inventors: Tim Cwiekala
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2019-07-26
Filing date: 2020-07-22
Publication date: 2021-02-04
Also published as: CN114144372B; JP2022541339A; CN114144372A; DE112020003563A5

Abstract

The invention relates to a winding machine having a plurality of winding positions (1.1-1.5) for winding up a plurality of threads (2) onto bobbins (21). The bobbins (21) are held adjacent to each other on the circumference of a driven bobbin spindle (19.1, 19.2), wherein a contact roller (26) contacts the circumference of the bobbins (21). The winding positions (1.1-1.5) each have a relocation unit (4.1-4.5) for moving the threads back and forth, wherein each of the relocation units (4.1-4.5) has at least one thread guide (7.1-7.3, 8.1, 8.2) guided within a guide rail (5.1-5.3, 6.1, 6.2) and wherein the guide rails (5.1-5.3, 6.1, 6.2) of adjacent relocation units (4.1-4.5) are overlappingly arranged. In order to maintain identical guidance of the threads in the winding positions (1.1-1.5), the thread guides (7.1-7.3, 8.1, 8.2) of adjacent relocation units (4.1-4.5) are formed having the guide elements (9) contacting the threads such that the guide elements (9) are guidable in a common guide plane (27).

Description

Take-up machine

The invention relates to a winding machine with several winding points for winding several threads into bobbins according to the preamble of claim 1.

When melt-spinning synthetic filaments, it is generally known that the filaments are each wound into bobbins at the end of the process. In order to wind the threads generated within a spinning position parallel to bobbins, derar term winding machines with several winding points are used. The coils are held next to one another on the circumference of a driven winding spindle. Thus, the winding positions extend along the winding spindle, each of the winding positions having a laying unit in order to guide one of the threads back and forth within a laying stroke. Basically, two variants of winding machines are known in the prior art.

In a first variant, which is disclosed, for example, in EP 2208699 A2, the threads in the laying units of the winding positions are each guided by an oscillatingly driven thread guide. The thread guide is driven by an endless belt and guided by a guide rail along a laying stroke. However, such belt drives have a width which is greater than a coil width of the coil to be wound. To this extent, the laying units in the known winding machine are arranged overlapping next to one another. Such overlaps of the laying unit lead, however, to the fact that the threads in the winding points are guided unevenly for storage on the bobbin surfaces. In particular, the guide lengths that develop between the bobbin surface and the thread guides are different, which is particularly noticeable in a mass distribution of the thread at the ends of the laying stroke.

A second variant of the generic winder is known, for example, from EP 0965554 A2. In this embodiment of the winding machine, the laying units in the winding points each have a plurality of oppositely driven guide elements for guiding one of the threads. The guide elements are designed as rotating wings that guide the thread at their wing tips. In this case, however, it is necessary that the thread between the laying stroke ends Wing pairs must be passed. In this respect, the thread cannot be guided in a defined manner, in particular at the ends of the laying stroke, in order to influence the mass distribution of the thread on the winding edges.

It is now the object of the invention to develop a winder of the generic type in such a way that the threads can be wound into identical bobbins in each of the winding points with a uniform mass distribution of the stored threads.

According to the invention, this object is achieved in that the thread guides of neighboring laying units are designed with guide elements contacting the threads in such a way that the guide elements can be guided in a common guide plane.

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

The invention separates from the proviso that identical thread guides must be used for laying the thread in each of the laying units, in order to ensure identical mass inertias, in particular with the oscillating drive. The invention has recognized that different mass inertia in the oscillating driven yarn guides can be compensated in a simple manner by the respective drives. Thus, the thread guides of adjacent laying units can be formed independently of their drive coupling with guide elements that move them in a common guide plane for guiding the threads. In this way, the threads in the neighboring winding points can be laid under the same conditions within one laying stroke. A Ver laying triangle spanned between the guide elements and an upstream head thread guide is designed to be the same size in the winding points.

For the filing of the thread on the bobbin surface, however, a so-called drag length is also decisive, which is formed between the guide elements of the thread guide and the contact roller. The development of the invention, in which a constant distance is formed in the angular points between the guide plane of the guide elements and the contact roller, therefore has particular advantages parts to evenly wind the bobbin ends of the bobbins and their mass distribution of the threads on each of the bobbins.

Since the yarn group produced in a spinning position of a melt spinning device is to be wound into bobbins under the same conditions, it is further provided that all guide elements of the yarn guides of the laying units can be guided in the guide plane. This results in particular in the possibility of placing the installation units next to one another in an extremely compact manner in a machine frame.

In order to be able to compensate for the difference in height to the guide level of the guide elements with an overlapping arrangement of the installation unit, various further development variants are possible. In a first variant, the thread guide guided in an upper guide rail has a holder which projects in the direction of a lower guide rail and at which end the guide element of the thread guide is arranged. The thread guide guided in the lower guide rail is guided with the guide element in the lower guide rail, which defines the position of the guide plane.

Alternatively, however, there is also the possibility that the thread guide guided in the lower guide rail has a holder projecting in the direction of the upper guide rail, at which end the guide element of the thread guide is held. Accordingly, the thread guide guided in the upper guide rail is guided with the guide element in the upper guide rail. The position of the upper guide rail forms the guide plane of the guide elements of all winding points.

In the event that larger height distances are required to arrange the overlapping installation units, the further development of the invention is preferably implemented in which the thread guide guided in the upper guide rail has a holder protruding in the direction of a lower guide rail, at which end the guide element of the thread guide is held and in which the thread guide guided in the lower guide rail has a holder projecting in the direction of the upper guide rail, at which end the guide element of the thread guide is held. In this respect, the management level extends between the upper and lower guide rails.

The thread guides are driven in the traversing units preferably by an endless belt that is driven in an oscillating manner. Such drives are characterized by high positional accuracy and controllability of the thread guide within half of the laying stroke.

Here, the endless belt is preferably guided through several deflection rollers and a drive wheel that is driven directly by an electric motor. For example, the lengths of the installation cover can be controlled by predefined step sequences of a stepper motor.

In order to influence the mass distribution of the thread when winding the bobbin in order to obtain as uniform a bobbin density as possible over the entire bobbin width of the bobbin, the further development of the invention is particularly advantageous in which the electric motor is assigned a control unit for drive control and in which the control unit has several control programs for guiding the thread guide for laying the thread. Any number of shortening strokes can be carried out regardless of the type of effect. There is the possibility of adapting the laying speed depending on the length of the laying stroke in such a way that the same times result for the passage of a laying stroke. In this way, constant laying frequencies can be maintained, which can be used in particular for winding the coil in a stepped precision winding. The stepped precision winding represents a variation of the wild winding and the precision winding. Each of the winding types can advantageously be implemented here.

In order to achieve a rapid reversal of the yarn guide at the ends of the laying stroke, especially with the increased inertia of the thread guides, the development of the invention is particularly advantageous in which the laying units in the winding points have separate reversing aids at the ends of the guide rails, which are used to reverse the movement the thread guides act. Such reversing auxiliary devices can, for example, by mechanical Niche or magnetic spring elements be formed. Such spring elements could also be continuously engaged in order to support the movement of the thread guides.

The winding machine according to the invention is explained in more detail below with the aid of some exemplary embodiments with reference to the accompanying figures.

They represent:

Figure 1 is a schematic view of a first embodiment of the inventive winding machine.

FIG. 2 schematically shows a top view of the laying units in the winding points of the exemplary embodiment according to FIG. 1.

FIG. 3 schematically shows a partial view of two adjacent winding points of the exemplary embodiment from FIG. 1.

FIG. 4 schematically shows a partial view of two adjacent winding points of a further exemplary embodiment of the winding machine according to the invention.

FIG. 5 schematically shows a partial view of adjacent winding points of a further exemplary embodiment of the winding machine according to the invention.

In Figures 1, 2 and 3, a first embodiment of the winding machine according to the invention Shen is shown in several views. 1 shows a complete view, FIG. 2 shows a plan view of the installation units and FIG. 3 shows a partial view of adjacent winding points. The Ausführungsbei game of the winding machine according to the invention will first be described with reference to FIG.

In this exemplary embodiment, the winding machine has a total of five winding sets 1.1 to 1.5, which are formed along a cantilevered winding spindle 19.1. The number of winding points is exemplary. So it is already common, ten, twelve or to wind even more threads parallel to each other on a driven winding spindle to form bobbins.

The winding spindle 19.1 is held in this embodiment on a rotatably gelager th winding turret 20, which carries a second winding spindle 19.2 offset by 180 °. The winding spindles 19.1 and 19.2 are each assigned two spindle drives 23.1 and 23.2. The rotary movement of the winding turret 20, which is rotatably mounted in a machine frame 18, is carried out by a turret drive 24. By means of the turret drive 24, the winding turret 20 can be moved with the winding spindles 19.1 and 19.2. The winding spindles 19.1 and 19.2 can thus be pivoted alternately into a changing area and into an operating area. In the operating range of the winding spindles

19.1 and 19.2 each a thread 2 is wound into a Spu le 21 in the winding points 1.1 to 1.5. To accommodate the bobbins 21, a plurality of bobbin sleeves 22 are stretched one behind the other on the circumference of the winding spindle 19.1 and 19.2.

The winding points 1.1 to 1.5 formed in the winding machine each have a deflection roller in an inlet area for separating and guiding the threads

3.1 to 3.5, which form the so-called cop thread guide within the respective winding points 1.1 to 1.5 and interact with a laying unit 4.1 to 4.5. The pulleys 3.1 to 3.5 and the associated laying units 4.1 to 4.5 form what is known as a laying triangle in which the thread 2 is guided back and forth so that a cross-winding occurs on the circumference of the bobbin 21.

The supply of the threads 2 takes place in this embodiment by two Ga lettes 25.1 and 25.2, which are held on a godet carrier 28 at the front end of the Aufspulmaschi ne. The godets 25.1 and 25.2 are designed to be driven and can, for example, pull the thread sheet directly from a spinning device.

At this point it should be expressly mentioned that the formation of the head thread guides and the feeding of the threads via the laterally arranged godets are exemplary. In principle, there is also the possibility of feeding the threads centrally with a spreading over a godet held in the middle area of the winding points. The laying units 4.1 to 4.5 arranged in the winding points 1.1 to 1.5 each have a width that is greater than the width of the reels 21. Thus, the laying units 4.1 to 4.5 are offset and overlapping one another on the machine frame 18. The relocation units 4.1, 4.3 and 4.5 are arranged in the machine frame 18 in an upper position and the relocation units 4.2 and 4.4 are arranged in a lower position. Each of the relocation units 4.1 to 4.5 have a guide rail and a wire guide guided within the guide rail. The laying units 4.1, 4.3 and 4.5 thus have an upper guide rail 5.1 to 5.3 and an upper thread guide 7.1 to 7.3. The laying units 4.2 and 4.4 held in the lower position each have a lower guide rail 6.1 and 6.2 as well as a lower thread guide 8.1 and 8.2.

The thread guides 7.1 to 7.3 and 8.1 and 8.2 guided in the guide rails 5.1 to 5.3 and 6.1 and 6.2 are each attached to an endless belt.

To explain the drive of the thread guides, reference is made in addition to the top view of the laying units 4.1 to 4.5 shown in FIG. Each of the laying units 4.1 to 4.5 has an identical drive for driving the thread guides. In this respect, the drive device is explained in more detail using the example of the laying units 4.1.

The laying unit 4.1 has an endless belt 13, which was guided by two guide rollers 14 and a drive wheel 15 that were arranged in the Ab with one another. The drive wheel 15 is coupled to an electric motor 11, as is shown in FIG. The guide rollers 14 are arranged in the end regions of the guide rail 5.1, so that the endless belt 13 is guided parallel to the guide rail 5.1. In the area between the guide rollers 14, the thread guide 7.1 is firmly connected to the end belt 13. The thread guide 7.1 can be guided back and forth by the endless belt 13 within the guide rail 5.1.

At this point, it should be expressly stated that the endless belt could also extend over several winding points and carry a separate thread guide for each winding point between the guide rollers. In this way, several thread guides can be guided synchronously through the laying unit. In the reversal areas of the thread guide 7.1, separate auxiliary deflection devices 16 are arranged in order to support the reversing movement of the thread guide 7.1 by means of a mechanical or elastic spring. The Umlenkhilfseinrich lines 16 are assigned to the guide rollers 14.

As shown in Figure 1, the guide rollers 14 of the adjacent laying units 4.1 and 4.2 are arranged one below the other and could, for example, be guided freely rotatably on an axis. Accordingly, the guide roles between the installation units 4.2 and 4.3, 4.3 and 4.4 and 4.4 and 4.5 are arranged.

The electric motors 11 assigned to the drive wheels 15 each have a control unit 12 in which several control programs for controlling the laying units 4.1 to 4.5 are stored. The control units 12 are connected to a machine control 17, as shown in FIG.

In order to explain the laying units 4.1 to 4.5, reference is now made to FIG. 3 in the following. In the figure 3 the adjacent laying units 4.1 and 4.2 are shown in an enlarged view according to FIG.

The laying unit 4.1 leads the upper thread guide 7.1 in the upper guide rail 5.1. The upper thread guide 7.1 has a holder 10 protruding towards the lower guide rail 6.1. At the end of the holder 10, a guide element 9 is arranged. The guide element 9 has a guide groove 9.1 with which the thread 2 is guided.

The lower guide rail 6.1 of the adjacent laying unit 4.2 also has a guide element 9 with a guide groove on the lower thread guide 8.1

9.1 on. The guide element 9 of the lower thread guide 8.1 is guided directly in the guide rail 6.1. The guide element 9 of the upper thread guide

7.1 and the guide element 9 of the lower thread guide 8.1 of the adjacent laying units 4.1 and 4.2 are ge in a common guide plane 27 leads. Thus, on the one hand, between the prepared deflection rollers 3.1 and 3.2 and the guide elements 9 formed laying triangle in both winding points 1.1 and 1.2 identical. Thus, the threads in the winding points 1.1 and 1.2 can be laid under the same conditions for winding the bobbins.

As can be seen from the illustration in Figure 1, the laying units 4.1 to 4.5 arranged in the winding points 1.1 to 1.5 are designed in such a way that all guide elements 9 of the upper thread guides 7.1 to 7.3 and the lower thread guides 8.1 and 8.2 are guided in a common guide plane 27 .

A contact roller 26 is arranged downstream of the laying units 4.1 to 4.5 in the winding points 1.1 to 1.5. The contact roller 26 is in contact with the surface of the bobbins 21 to be wound, so as to guide the threads 2 onto the bobbin surface of the spu 21. The contact roller 26 extends over all coils 21 of the winding stel len 1.1 to 1.5 and is rotatably mounted in the machine frame 18. Here, the contact roller 26 is preferably held on a movable roller carrier 28.

As can be seen from the illustration in FIG. 1, a distance from the contact roller 26 is formed between the guide plane 27 in which the guide elements 9 of the upper thread guides 7.1 to 7.3 and the lower thread guides 8.1 and 8.2 move. The distance between the guide plane 27 and the contact roller 26 is shown in FIG. 1 with the letter A. The distance A denotes a so-called drag length which is formed between the guide elements 9 and the contact roller 26 when the threads are guided within the winding. In this case, the drag length is identical at all winding points 1.1 to 1.5, which is advantageous in particular when executing what is known as breathing to optimize the mass distribution of the thread at the bobbin ends of the bobbins 21.

In operation, each of the many laying units 4.1 to 4.5 is driven and controlled by a separate control unit 12 and the electric motor 11. By connecting the control units 12 to the machine control 17, all control programs and winding programs can be synchronized in the winding positions 1.1 to 1.5. In particular, the electric motors 11 can be controlled differently, taking into account the different inertia of the upper thread guides 7.1 to 7.3 compared to the lower thread guides 8.1 and 8.2. Due to the identical guidance of the threads in the winding points 1.1 and 1.5, the quality of winding is very good in all winding points.

Depending on the design and the space required in the machine frame, the relocation units 4.1 to 4.5 can be arranged in different configurations in the machine frame. For this purpose, another possible exemplary embodiment of the winding machine according to the invention is shown in FIG. 4 using the example of two adjacent winding points 1.1 and 1.2.

The laying units 4.1 and 4.2 of the winding points 1.1 and 1.2 are shown. The laying unit 4.1 has an upper guide rail 5.1 with an upper thread guide 7.1. The adjacent laying unit 4.2 has a lower guide rail 6.1 and a lower thread guide 8.1. In this case, the lower thread guide 8.1 has a holder 10 which is directed upwards towards the upper guide rail 5.1 and at the end of which a guide element 9 is arranged. The Führele element 9 of the lower thread guide 8.1 protrudes into a guide plane 27, which is determined by the upper guide rail 5.1. The upper thread guide 7.1 thus has a guide element 9, which is guided in the upper guide rail 5.1. There is thus the possibility of realizing larger towing lengths within one winding machine.

In the event that a greater distance is required between the laying units held in the upper position and the lower position, a guide plane can also be implemented between the upper guide rail and the lower guide rail. For this purpose, a possible exemplary embodiment is shown schematically in FIG. 5 in a partial view of the adjacent winding points 1.1 and 1.2.

In the exemplary embodiment illustrated in FIG. 5, the laying unit 4.1 has an upper guide rail with an upper thread guide 7.1 and the laying unit 4.2 has a lower guide rail 6.1 with a lower thread guide 8.1. A holder 10 is formed on each of the thread guides 7.1 and 8.1, which protrude into the space between the upper guide rail 5.1 and the lower guide rail 6.1. At the end of the holder 10, the guide elements 9 are arranged, which then move in the guide plane 27. The embodiments shown in Figures 1 to 5 are particularly exemplary in the structural design of the laying units 4.1 to 4.5 and their thread guides. It is essential here that the guide elements 9, which are guided through the laying units 4.1 and 4.5 and which contact the thread, are guided in a common guide plane. The guide plane is aligned essentially parallel to the winding spindle on which the bobbins are held. Here, several guide elements can be guided on an endless belt for each installation unit.

Claims

1. Take-up machine with several winding points (1.1-1.5) for winding several threads (2) into bobbins (21) which are held next to one another on the circumference of a driven winding spindle (19.1, 19.2), with a lying on the circumference of the bobbins (21) Contact roller (26) and with several laying units (4.1-4.5) distributed over the winding points (1.1-1.5) for guiding the threads back and forth, each of the laying units (4.1-4.5) at least one within a guide rail (5.1-5.3, 6.1, 6.2) guided thread guides (7.1-7.3, 8.1, 8.2) and wherein the guide rails (5.1-5.3, 6.1, 6.2) of adjacent laying units (4.1-4.5) are arranged so as to overlap, characterized in that the thread guides (7.1 -7.3, 8.1, 8.2) adjacent laying units (4.1-4.5) are designed with guide elements (9) contacting the threads in such a way that the guide elements (9) can be guided in a common guide plane (27).

2 winding machine according to claim 1, characterized in that a constant distance (A) in the winding points (1.1-1.5) is formed between the guide plane (27) of the guide elements (9) and the contact roller (26).

3 winding machine according to claim 1 or 2, characterized in that all guide elements (9) of the thread guides (7.1-7.3, 8.1, 8.2) of the laying units (4.1-4.5) can be guided in the guide plane (27).

4. Winding machine according to one of claims 1 to 3, characterized in that the thread guide (7.1- 7.3) guided in an upper guide rail (5.1-5.3) has a holder (10) projecting in the direction of a lower guide rail (6.1, 6.2), at which end the guide element (9) of the thread guide (7.1- 7.2) is held, and that the thread guide (8.1, 8.2) guided in the lower guide rail (6.1, 6.2) with the guide element (9) in the lower guide rail (6.1 , 6.2).

5. Winding machine according to one of claims 1 to 3, characterized in that the thread guides (8.1, 8.1) guided in the lower guide rail (6.1, 6.2)

8.2) has a holder (10) protruding in the direction of the upper guide rails (5.1-5.3), at which end the guide element (9) of the thread guide (8.1, 8.2) is held, and that the one in the upper guide rail (5.1-5.3) guided Fa denführer (7.1-7.3) is guided with the guide element (9) in the upper guide rail (5.1-5.3).

6. Winding machine according to one of claims 1 to 3, characterized in that the thread guide (7.1-7.3) guided in the upper guide rail (5.1-5.3) has a holder (10) protruding in the direction of a lower guide rail (6.1, 6.3), at which end the guide element (9) of the thread guide (7.1-7.3) is held, and that the thread guide (8.1, 8.2) guided in the lower guide rail (6.1, 6.2) has a ra in the direction of the upper guide rail (5.1-5.3) Has lowing holder (10), at which end the guide element (9) of the Fa denführer (8.1, 8.2) is held.

7. Winding machine according to one of the preceding claims, characterized in that the laying units (4.1-4.5) each have an oscillating endless belt (13) on which the thread guide (7.1-7.3, 8.1, 8.2) is attached

8. Take-up machine according to claim 7, characterized in that the endless belt (13) per winding point (4.1-4.5) is guided by several guide rollers (14) and a drive wheel (15), the drive wheel (15) being an electric motor (1 1) is assigned.

9. A winding machine according to claim 8, characterized in that the electric motor (1 1) is assigned a control unit (12) for drive control and that the control unit (12) has several control programs for guiding the thread guide for laying the thread.

10. Winding machine according to one of claims 1 to 9, characterized in that the laying units (4.1-4.5) in the winding points (1.1-1.5) in each case at the ends of the guide rails (5.1-5.3, 6.1, 6.2) separate Umkehrhilfseinrich- have lines (16) which act to reverse the movement of the thread guides (7.1-7.3, 8.1, 8.2).