WO2021144300A1

WO2021144300A1 - Winding machine

Info

Publication number: WO2021144300A1
Application number: PCT/EP2021/050571
Authority: WO
Inventors: Rainald Voss; Brian Kluge; Abdelati HAMID; Johannes THOSS
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2020-01-18
Filing date: 2021-01-13
Publication date: 2021-07-22
Also published as: DE102020000286A1; CN114929606B; JP2023511089A; DE112021000612A5; JP7401684B2; CN114929606A

Abstract

The invention relates to a winding machine comprising multiple winding stations (1.1 - 1.5) for winding multiple threads (2) onto reels (8). The winding stations (1.1 - 1.5) are arranged next to one another along at least one winding spindle (6) held in a protruding manner, wherein a top thread guide (3) is arranged before each winding station in the thread path. The top thread guides (3) are moveably retained on a guide track (14) and can be guided optionally into an operating position in the winding stations (1.1 - 1.5) or into a threading position outside the winding stations (1.1 -1.5). In order to select and receive the threads (2), the guide track (14) for guiding the top thread guide (3) is formed at least by a straight guide section (14.1) along the winding spindle (6) and a curved guide section (14.2), wherein the curved guide section (14.2) of the guide track (14) extends beyond a spindle end of the winding spindle (6).

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.

In a melt spinning process, the threads produced as a thread sheet are wound parallel to bobbins at the end of the process. For this purpose, Aufspulmaschi NEN with several winding points are used, which are formed along a cantilevered winding spindle on a machine frame. The winding spindle is used to take on the bobbins to wind them at the same time. The filaments are deposited in what is known as a cross-winding, so that within the winding points, the individual threads are guided back and forth by means of a thread-laying unit before they run onto the bobbin surface. The feeding into the winding points and the separation of the threads takes place via several so-called head thread guides, which are arranged in front of the thread traversing units in the winding points. A so-called Ver laying triangle, in which the thread is guided, spans between the head thread guides and the downstream thread traversing unit.

In order to be able to distribute and thread the threads of the thread sheet to the winding points of the winding machine at the start of the process, it is usual that the thread sheet is first guided over a movable suction injector in order to keep the threads ready for threading into the head thread guide. Basically, a distinction is made between two variants of winding machines.

In one of the variants, a movable auxiliary device is used for thread guidance and threading of the threads into the head thread guide. Such a Aufspulma machine is known for example from WO 98/28217 or EP 2497732 A2. In the known winding machines, the auxiliary device is formed by a movable thread guide with several guide grooves arranged next to one another. The thread guide is used to pick up the thread sheet guided by the suction injector at the start of the process and to separate it by moving it along a guide track and to transfer it to the head thread guide. Relatively complex guideways and drives are required here in order to tion and threading of the thread sheet. In this respect, such auxiliary devices are particularly prone to failure.

In a further variant of winding machines, no additional movable auxiliary devices are required for separating and threading the threads. Such a winding machine is known, for example, from DE 102014220875 A1. In the known winding machine, the head thread guides are movably held on a guide rail and can be guided between an operating position in the winding points out into a lay-on position at a front end of the winding machine outside the winding points. In the lay-on position, the head thread guides lie next to one another at a short distance for threading the threads.

In the production of synthetic threads, however, there is now a desire to wind up as large a number of threads as possible in a winding machine at the same time. Accordingly, a large number of head yarn guides must be transferred from their operating positions to feed positions. In this case, however, care must be taken that for separating and threading the threads of the thread sheet, the head thread guides are kept as close as possible to an operator of the winding machine. In the winder of the generic type, the head thread guides would have to be placed close together in a row next to one another, so that separating and threading the threads into the head thread guide, which is far away from the operator, is only possible with auxiliary devices.

The object of the invention is to provide a winder of the generic type in which the separation and threading of the threads of a group of threads into the head thread guide can be operated as easily as possible and can be carried out both manually and automatically.

This object is achieved according to the invention in that the guide rail for guiding the head thread guides has at least one straight guide section along the winding spindle and a curved guide section and that the curved guide section of the guide rail extends beyond a spindle end of the winding spindle. Advantageous further developments of the invention are defined by the features and combinations of features of the subclaims.

The invention thus has the particular advantage that the head thread guides can be held in their contact positions with a height offset to one another in the guide rail. In addition, the guide rail can thereby advantageously be prevented from protruding into an operating aisle. Due to the curvature of the guide rail, the head thread guides can be transferred, for example, from a row-shaped, horizontally oriented operating position into at least partially vertically oriented contact positions. In particular, due to the curvature of the guide rail, an offset between the head thread guides is generated, which makes separating and threading the threads easier.

To place a large number of head yarn guides in their Anlegstellun conditions it is further provided that the guide rail at one end of the curved guide section has a straight guide end section, wel cher has a stop for one of the head yarn guides for the application position. Since it is possible to position the head thread guide in the lay-on positions.

To move and guide the head thread guide, the development of the inven tion is particularly advantageous in which each of the head thread guides is assigned a separate of several guide carriages, which are guided on the guide rail and which are coupled to one another by flexible bands that ge in their length corresponding to a Distance between adjacent winding points are formed. In this way, all head thread guides can be moved together on the guide rail by actively moving a first or a last head thread guide through the guide carriage. Due to the flexible coupling of the guide carriages, all head thread guides can be moved together on the guide rail. The flexibility of the tapes enables on the one hand a positioning of the head thread guides in their operating positions when the tapes are pulled out and on the other hand a pushing together of the head thread guides in their contact position for corrugated tapes. The operating position of the head thread guide can advantageously be realized by a second stop which is formed on the straight guide section of the guide rail at a free end.

In order to enable automatic separation and threading of the thread sheet with the movement of the head thread guide during the transition from the Anlegstel to the operating positions, the development of the invention is particularly advantageous in which the head thread guides are each formed by a freely rotatable pulley with an open thread running track and in which the deflecting rollers are held in a cantilever manner by holding webs of different lengths on the guide carriage. The different length of the holding webs can be used to set an offset between the deflection rollers, which corresponds to a thread spacing of the neighboring threads in a thread array. Thus, each of the deflection rollers can take over the thread relating to the winding point from a thread sheet.

For this purpose, the straight guide section of the guide rail is arranged at an angle with respect to a spindle axis of the winding spindle in such a way that the deflection rollers are held in the operating positions in a plane parallel to the spindle axis despite different holding webs. This ensures that the same conditions are ensured in each of the winding points when the threads are wound into bobbins.

In order to generate a defined thread spacing in the thread sheet, in which the deflection rollers are moved in, the development of the invention is preferably carried out in which a freely rotatable stationary guide roller is provided for guiding a thread sheet, which the deflection rollers held in the application positions for separation and application is assigned to the threads.

In this case, a thread sheet can be stretched particularly advantageously with a defined thread spacing between the adjacent threads, in which the guide roller is preceded by a driven godet and by the godet and the guide roller having a thread running plane of the thread sheet in the area between the operating positions and the placement positions of the Fit the pulleys. To automate the threading, further developments of the invention are provided in which one of the outer head thread guides is assigned an actuator through which the head thread guide can be guided on the guide rail.

The actuator is preferably driven by a linear drive, e.g. B. running a piston rod loose cylinder.

The actuator can be controlled by a control device, the control device being connected to a control device or to at least one control panel.

To further explain the invention, an embodiment example of the winding machine according to the invention will now be explained in more detail with reference to the accompanying figures.

They represent:

Fig. 1 is a schematic side view of the embodiment of the erfindungsge MAESSEN winding machine

2 schematically shows a top view of the exemplary embodiment from FIG. 1; FIG. 3 schematically shows a front view of the exemplary embodiment from FIG. 1, FIG. 4.1 and FIG

4.2 schematically shows a detail of the side view of the exemplary embodiment from FIG. 1 in various operating situations

Fig. 5.1 and

5.2 schematically shows a detail of the top view of the exemplary embodiment according to FIG. 1 in various operating situations

6 schematically shows a top view of a head thread guide of a first winding point of the exemplary embodiment according to FIG. 1

1, 2 and 3, an embodiment of the winding machine according to the invention is shown schematically in several views. Fig. 1 shows the Ausfüh approximately example in a side view, Fig. 2 in a plan view and in Fig. 3 in a Front view. Unless express reference is made to one of the figures, the following description applies to all figures.

In this exemplary embodiment, the winding machine according to the invention has a total of five winding points 1.1 to 1.5 which are formed next to one another in a machine frame 10. The winding points 1.1 to 1.5 are arranged along a winding spindle 6 held in a cantilever manner. In each of the winding points 1.1 to 1.4, a thread of a group of threads 2 is wound to form a bobbin 8, the bobbins 8 being held next to one another on the winding spindle 6. The number of winding points 1.1 to 1.5 and the number of threads of the thread sheet 2 are exemplary here. In principle, such winding machines can have up to 16 winding points.

The winding points 1.1 to 1.5 are of identical design and each have a thread-laying unit 4. Each of the thread traversing units 4 contains a guide means, not shown in detail here, in order to guide the thread assigned to the winding point 1.1 to 1.5 back and forth within a traversing stroke. The thread traversing unit 4 can be formed, for example, by a reverse thread shaft traverse, a belt traverse or a wing traverse.

For the parallel winding of the threads of the thread sheet 2, each of the winding points 1.1 to 1.4 is assigned a winding tube 9 on the circumference of the driven winding spindle 6. For this purpose, the winding tubes 9 are clamped on the circumference of the winding spindle 6. The winding spindle 6 extends over all winding steles 1.1 to 1.5, so that the threads in the winding points 1.1 to 1.5 are wound parallel to the bobbins 8.

To deposit the threads on the surfaces of the bobbins, a pressure roller 5 is provided, which extends parallel to the winding spindle 6 and is thus assigned to the winding steles 1.1 to 1.5. The pressure roller 5 is formed in the area between the thread-laying unit 4 and the winding spindle 6. The machine frame 10 is used to receive and fasten the thread traversing units 4, the pressure roller 5 and the winding spindle 6. The winding spindle 6 is supported in a cantilever manner on a winding turret 7, which in turn is rotatably held in the machine frame 10. The winding turret 7 holds a second winding spindle 6, which is offset by 180 ° to the first winding spindle 6 is ordered. Both winding spindles 6 can be turned off by turning the winding turret 7. alternately lead into a winding area and a changing area, so that the threads in the winding points 1.1 to 1.5 can be continuously wound to form bobbins 8. The winding spindles 6 and the winding turret 7 are each coupled to drives that are not shown here.

For receiving and separating the thread sheet 2 on the winding points 1.1 to 1.5, each winding point 1.1 to 1.5 above the thread traversing units 4 is assigned a respective head thread guide 3. The head thread 3 distributed over the winding points 1.1 to 1.5 thus form an inlet into the respective winding points 1.1 to 1.5.

Each of the head thread guides 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 straight guide section 14.1 along the winding spindle 6. The straight guide section 14.1 is followed by a curved guide section 14.2 of the guide rail 14, which extends over the spindle end of the winding spindle 6 to an operating end extends. The curved guide section 14.2 is followed by a straight guide end section 14.3 which is offset by approximately 90 ° with respect to the straight guide section 14.1. A first stop 15.1 is formed on the guide end section 14.3 of the guide rail 14. At the opposite free end of the straight guide section 14.1 of the guide rail 14, a second stop 15.2 is provided. The head thread guides 3 can thus be guided back and forth between an operating position and a contact position by moving the guide carriage 16 along the guide rail 14. In FIGS. 1, 2 and 3, the head thread guides 3 are shown in their operating positions.

In this exemplary embodiment, the head yarn guides 3 are each formed by a freely rotatably mounted deflection roller 13. For explanation, in addition to Fig.

Reference is made to 6, which shows a plan view of a head thread guide 3 in the first winding point 1.1. The deflection roller 13 has an open thread running track 13.1 on its circumference, in which a thread of the thread sheet can be guided with a partial looping.

The deflection roller 13 is connected to the guide carriage 16 by a retaining web 17. Here, the length of the holding webs 17 of the deflection rollers 13 is less than differently designed, as can be seen from the illustration in FIG. Thus, the Hal testeg 17 in the winding point 1.1 has a greater length than the holding webs 17 of the adjacent winding points 1.2 to 1.5. The differences in length of the holding webs 17 are formed according to a thread spacing of the threads in the thread sheet 2, so that when the deflection rollers 13 move from a respective contact position into the operating position, each of the deflection rollers 13 separates a thread from the thread sheet 2 and takes it over. So that the pulleys 13 are aligned in their operating positions parallel to egg ner spindle axis 6.1 of the winding spindle 6, the straight guide section 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 axis 6.1 entered with the reference number.

In this exemplary embodiment, the guide carriage 16 of the winding point 1.1 is coupled to an actuator 20. The actuator 20 is carried out by a rodless cylinder which extends parallel to the straight guide section 14.1 of the guide rail. The actuator 20 is connected to a control device 21 which can be controlled via an operating panel 23. The actuator 20 could, for example, also be implemented by an electric linear drive which extends parallel to the guide rail 14 and moves the guide carriage 16 of the winding point 1.1. The actuator 20 and the guide rail 14 are supported by a holder 25 on the machine frame 20 alternately.

As can be seen from the illustration in FIG. 1, the guide carriages 16 are connected to one another by a flexible band 18. The length of the flexible tape 18 is such that, in the extended state, each guide slide 16 assumes an operating position of the relevant head thread guide 3 in the winding points 1.1 to 1.5.

A godet 11 is arranged upstream of the deflection rollers 13 in the thread run. The godet 11 is held on a godet carrier 12 and is coupled to a drive, not shown here. The godet carrier 12 is held laterally next to the winding points 1.1 to 1.5 on the protruding end of the winding spindle 6. Here, the Galettenträ ger 12 can be supported on the machine frame 10. In the embodiment of the winding machine according to the invention shown in FIGS. 1 to 3, a thread of the thread share 2 is continuously wound into bobbins 8 in the winding steles 1.1 to 1.5. When a process is started or a process interruption, however, it is necessary for the thread sheet 2 to be threaded into the winding positions 1.1 to 1.5. In order to be able to carry out this process, a guide roller 19 is arranged on the machine frame 10 below the head thread guide 3 so that it can rotate freely. The guide roller 19 is arranged in such a way that a thread running plane spanned between the godet 11 and the guide roller 19 is set which traverses a movement path of the head thread guides 3 and lies between the operating positions and the contact positions of the head thread guides 3. The guide roller 19 is thus used exclusively for receiving the thread sheet when separating and threading the threads into the head thread guide 3.

For further explanation, reference is now made to FIGS. 4.1, 4.2, 5.1 and 5.2. 4.1 and 4.2 show a detail of the side view of the exemplary embodiment from FIG. 1 in various operating states, and FIGS. 5.1 and 5.2 show a top view of the illustration from FIGS. 4.1 and 4.2.

4.1 and 5.1 show the operating state in which the thread sheet 2 is guided through a suction injector 24 in order to enable separation and threading into the head thread guide 3. For this purpose, the head thread guides 3 with the guide carriages 16 are guided into a respective contact position outside of the winding points 1.1 to 1.5. For this purpose, the guide carriage 16 of the winding point 1.1, which is coupled to the actuator 20, is guided by the actuator 20 along the straight guide section 14.1 of the guide rail 14. The adjacent guide carriages 16 are shifted, the distances between the guide carriages 16 being reduced to a minimum due to the flexibility of the belt 18. All guide carriages 16 arrive at the curved guide section 14.2 of the guide rail 14 until the guide carriage 16 of the winding point 1.5 at the Führungsendeab section 14.3 has reached the stop 15.1. This situation is shown in FIGS. 4.1 and 5.1. As soon as the head thread guides 3 are held in the application positions, the thread sheet 2 is applied with the suction injector 24 to the godet 11 and on the circumference of the guide roller 19. The guide roller 19 spans a thread running plane with the godet 11, which when the head thread guide 3 moves out of its contact position conditions are penetrated into the operating positions. For this purpose, the guide roller 19 is held on the machine frame 10 essentially axially parallel to the deflection rollers 13. The guide roller 19 has a guide groove on the circumference, which forms a Fa denkonvergenzpunkt. Thus, the threads run from the circumference of the godet 11 radiate in the shape of the guide roller 19. The guide roller 19 is below the pulleys 13 with a predetermined Ab was arranged. A defined thread spacing from one another is thus established in the thread sheet in the region of the deflecting rollers 13.

As can be seen in particular from the illustration in FIGS. 5.1 and 5.2, the order swivel castors 13 are connected to the guide carriage 16 by holding webs 17 of different lengths. In addition, the guide rail 14 with the straight guide section 14.1 is arranged at an angle to a spindle axis 6.1. As a result, the pulleys 13 meet with an offset on the thread sheet 2 guided between the godet 11 and the guide roller 22. The size of the offset is equal to the thread spacing of the threads in the thread sheet 2, so that by moving the guide carriage 16 each of the deflection rollers 13 takes over one of the threads of the thread sheet 2 and leads to the winding points 1.1 to 1.5. For this purpose, the guide carriage 16 of the winding point 1.1 is returned by the actuator 20 in the direction of the winding points 1.1 to 1.5.

The guide carriage 16 is moved up to a stop 15.2 at the free end of the guide rail 14. Due to the coupling with the belts 18, the following guide carriages and the deflection rollers 13 attached to them are mitge and take over one thread from the thread sheet 2 one after the other. This situation is shown in FIGS. 4.2 and 5.2.

During the separation and threading of the threads of the thread sheet 2 in the head thread guide 3, the thread sheet 2 is guided through the suction injector 24. The suction injector 24 can be performed here by an automatic operator. In this case, the control device 21 of the actuator 20 is connected to a control device. For this purpose, a control device 22 is shown in dashed lines in FIG. 3 as an example.

In principle, however, there is also the possibility of guiding the suction injector 24 by an operator. In this embodiment - as shown in Fig. 3 - the Control unit 21 of the actuator 20 is coupled to the control panel 23 at the control end of the winding machine. For example, the actuator 20 for moving the guide carriage 16 can be activated by a touch sensor on the control panel 23. In this respect, the winding machine according to the invention is suitable for both automation and manual operation.

In the illustrated embodiment of the Aufspulma machine according to the invention, the guide rail for guiding the head thread guide with the curved guide section is shaped such that the head thread guides are guided vertically downward on the end face of the winder. Of course, the inven tion also includes curved sections of the guide rail that are shaped in this way, which enables the head thread guides to be guided upwards in the opposite direction or offset by an angle laterally on the end face of the winding machine. For example, guiding the head thread guide at a position above the operating position of the head thread guide could facilitate threading of a thread fed by godets.

In this exemplary embodiment, the head thread guides 3 are designed as deflection rollers 13. In principle, however, there is also the possibility of designing the head thread guides 3 through ceramic thread eyelets or ceramic guide grooves. The pulleys shown in Figs. 1 to 3 can therefore be replaced without difficulty by derar term designs of head yarn guides.

In addition, the guide rail could also be designed in such a way that the curved guide section and the straight guide section extend in a horizontal plane. So the head thread guide could be kept in the landing positions without a difference in height.

Claims

1. Winding machine with several winding points (1.1 - 1.5) for winding several threads (2) into bobbins (8), which are wound in parallel next to one another on a driven winding spindle (6), with several thread traversing units (4) distributed over the winding points and several of the thread traversing units (4) in front of ordered head thread guides (3), which are movably held on a guide rail (14) and can optionally be guided into an operating position in the winding points (1.1-1.5) or in a lay-on position outside the winding points (1.1-1.5) are, characterized in that the guide rail (14) for guiding the head thread guide (3) has at least one straight guide section (14.1) along the winding spindle (6) and a curved guide section (14.2) and that the curved guide section (14.2) of the guide rail (14) extends beyond a spindle end of the winding spindle (6).

2. Take-up machine according to claim 1, characterized in that the guide rail (14) at one end of the curved guide section (14.2) has a straight guide end section (14.3), soft one stop (15.1) for one of the head thread guides (3) for the Has mooring.

3. Winding machine according to claim 1 or 2, characterized in that each of the head thread guides (3) is assigned a separate of several guide carriages (16), which are guided on the guide rail (14) and which are nested together by flexible belts (18) are coupled, which are formed in a length corresponding to a distance between adjacent winding points (1.1-1.5).

4. Winding machine according to claim 3, characterized in that the straight guide section (14.1) of the guide rail (14) has a second stop (15.2) for one of the head thread guides (3) for the operating position at a free end.

5. Winding machine according to one of claims 3 or 4, characterized in that the head thread guides (3) each with a freely rotatable deflection roller (13) an open thread running track (13.1) are formed and that the deflection rollers (3) are held in a cantilever manner by holding webs (17) of different lengths on the guide carriage (16).

6. Take-up machine according to claim 5, characterized in that the straight guide section (14.1) of the guide rail (14) opposite a Spindelach se (6.1) of the winding spindle (6) is arranged at an angle such that the deflection rollers (13) despite different retaining webs (17 ) are held in the operating positions in a plane parallel to the spindle axis (6.1).

7. Take-up machine by claim 5 or 6, characterized in that a freely rotatable, stationary guide roller (19) for guiding the thread sheet (2) is provided, which the deflection rollers held in the application positions (13) for Sepa and application of the threads assigned.

8. Take-up machine according to claim 7, characterized in that the guide roller (19) of a driven godet (11) is arranged downstream and that through the godet (11) and the guide roller (19) a thread plane of the thread sheet in the area between the operating positions and the Creation positions of the Umlenkrol len (13) can be clamped.

9. Winding machine according to one of claims 1 to 8, characterized in that one of the outer head thread guides (3) is assigned an actuator (20) through which the head thread guide (3) can be guided on the guide rail (14).

10. Winding machine according to claim 8, characterized in that the actuator (20) can be controlled by a control device (21), the control device (21) being connected to a control device (22) or an operating panel (23).