JP7447121B2 - winding machine - Google Patents

Description

The invention relates to a winding machine for winding yarn according to the preamble of claim 1.

When producing synthetic yarns in a melt spinning process, a plurality of yarns are typically produced in parallel as a yarn group and wound to form a package. Therefore, it is common to wind ten, twelve or more threads into a package simultaneously to form a package. For this purpose, a winder is used. The winder winds a plurality of threads on a long, projecting winding spindle to form a package. The laying of the yarn is carried out in a traverse manner, so that the yarn is reciprocated within the width of the package by means of a traversing device. The laying of the thread onto the package surface then takes place by means of contact rollers. This contact roller is in contact with the circumferential surface of the package with a predetermined pressing force. The contact roller is rotatably mounted. In such winders, depending on the nature of the winding spindle, the increased package weight leads to a deflection of the winding spindle. However, such deflections, which are particularly noticeable at the protruding free end of the winding spindle, cause differences in the pressing forces of the contact rollers and in the laying of the thread. In order to compensate for such deflections of the winding spindle, it is basically known to tilt the contact rollers and the traversing device in the machine frame depending on the deflection of the winding spindle. Such a winder is described, for example, in EP-A-2392532.

In this known winding machine, the contact rollers and the traversing device are arranged on a movable holding carrier. The holding carrier is connected to an adjustment mechanism for implementing the tilting. The adjustment mechanism is mechanically coupled to a rotatably supported take-up revolver. A take-up revolver supports a take-up spindle. The winding spindle is guided during winding of the thread by rotation of the winding revolver in order to increase the distance between the winding spindle and the contact roller. As the rotation angle of the take-up revolver increases, the package diameter on the take-up spindle and thus the package weight increases, so that, depending on the position of the take-up revolver, an adjusting mechanism adjusts the angle of inclination on the holding carrier of the contact roller. The inclination of the contact roller is therefore forcedly guided in known winding machines by a mechanical connection, depending on the position of the winding revolver. However, such a mechanical connection essentially has the disadvantage that it does not take into account the actual condition of the wound package and the weight of the package held on the winding spindle. Depending on the winding method, process implementation and yarn type, different package weights can occur for wound packages with the same package diameter. Such weight variations are not taken into account since the rotational movement of the take-up revolver can be controlled exclusively by the package diameter of the wound package. However, for the deflection of the winding spindle, only the package weight and not the package diameter are important.

It is therefore an object of the present invention to improve a winding machine of the type mentioned at the outset for winding yarn so that uniform packages can be wound on a long projecting winding spindle, in particular in each package The aim is to be able to carry out identical thread laying.

According to the invention, this problem is solved in that the holding carrier is held on the support carrier by a pivot bearing and that a controllable pivot drive is provided, which allows the holding carrier to be moved relative to the support carrier. This is solved by being relatively movable.

Advantageous refinements of the invention are defined by the features and combinations of features recited in the dependent claims.

The invention is distinguished by the fact that the traverse device and the contact roller can be adapted to the deflection of the winding spindle independently of the respective position of the winding spindle. Therefore, the holding carrier with the traversing device and the individual contact rollers can be actively moved on the support carrier, thereby compensating for the respective current deflection situation of the winding spindle.

In particular, in order to take into account the deflection of the winding spindle during the movement of the holding carrier on the support carrier, a swivel bearing is formed in the region of the supported end of the winding spindle and relative to the winding spindle. A variant of the invention with a laterally oriented pivot axis is particularly advantageous. The point of rotation of the holding carrier is thus moved into the rotational axis of the winding spindle. This allows a simple pivoting movement of the holding carrier to produce essentially the same pressing force as well as the same thread laying in each package of the winding spindle.

In order to enable the holding carrier to follow the deflection of the winding spindle at the support carrier as precisely as possible and with the smallest movement steps, the holding carrier is guided by means of a guide device at the protruding end of the support carrier. and it is further provided that the guide device is arranged between the support carrier and the holding carrier.

A variant of the invention has proven particularly advantageous, in which the guide device is formed by a linear roller guide with a roller carriage guided between a plurality of profiled rails. This results in a very precise adjustment of the holding carrier even under high loads.

For the relative movement of the holding carrier with respect to the support carrier, at least one of the profiled rails is attached to the support carrier, the other profiled rail is attached to the holding carrier, and both The profile rails are angled with respect to each other. This makes it possible to carry out extremely precise adjustments by moving the roller carriage, depending on the angular arrangement of the profile rails.

For the case in which one of the profile rails is oriented parallel to the unloaded take-up spindle, advantageously an angular arrangement of the corresponding profile rail The lowering of the holding carrier is regulated by.

For this purpose, the swivel drive is preferably constituted by a linear drive, which is connected directly to the roller carriage. Thereby, a predefined pivot angle about the pivot axis is adjusted via a simple linear movement in the holding carrier.

In order to be able to adapt the swiveling movement of the holding carrier to the respective state of the winding spindle during winding of the package, the swiveling drive is connected to a control device, which control device Particularly advantageous is a refinement of the invention which is connected to at least one sensor device for detecting the state of the spindle. Thus, for example, the position of the protruding end of the winding spindle can be detected by means of a distance sensor and taken into account when controlling the swivel drive. However, the sensor arrangement can also be constructed with a rotational speed sensor, which detects the rotational speed of the winding spindle and thereby represents the size for the respective package diameter.

In order to realize a continuous winding process, the winding spindle is preferably arranged on a winding revolver, which supports a second winding spindle and is rotatably supported in the machine frame. has been done.

In order to control the rotational movement of the winding revolver during winding of the package, the contact roller is held on the holding carrier by a movable roller carrier. The stroke movement of the contact roller can thus be used to control the take-up revolver during winding of the package.

The winding machine of the invention is particularly suitable for winding a plurality of threads on a long, projecting winding spindle having a length of, for example, 2 m. Deflections of the winding spindle caused by the package weight are advantageously compensated by the mobility of the holding carrier relative to the support carrier, and the contact roller and the traversing device maintain their relative positions with respect to each other. The head thread guide upstream of the traversing device is likewise preferably arranged on a holding carrier.

The winding machine according to the present invention will be described in detail below with reference to several embodiments with reference to the accompanying drawings.

1 is a side view schematically showing a first embodiment of a winding machine according to the present invention; FIG. 2 is a schematic opposite side view of the embodiment shown in FIG. 1; FIG. FIG. 2 is a front view schematically showing the embodiment of the winder according to the invention shown in FIG. 1; FIG. 2 is a cross-sectional view schematically showing the guide device of the embodiment shown in FIG. 1; FIG. 3 is a side view schematically showing another embodiment of a winding machine according to the invention. 6 is a front view schematically showing the embodiment shown in FIG. 5. FIG.

1, 2 and 3 illustrate a first embodiment of a winder according to the invention from several points of view. This embodiment is shown in side view in FIG. 1, in opposite side view in FIG. 2, and in front view in FIG. The following description applies to all drawings, unless an explicit connection is made to one of the drawings.

An embodiment of a winding machine according to the invention has a machine frame 1 . A long, projecting winding spindle 2 is rotatably mounted on the machine frame 1 and is held therein. The winding spindle 2 is associated with a spindle drive 3 . A projecting support carrier 4 extends above the winding spindle 2 and is fixedly connected to the machine frame 1 at one end. A holding carrier 5 is arranged on the support carrier 4. The holding carrier 5 extends substantially over the length of the support carrier 4 . The holding carrier 5 holds a traverse device 8 and a contact roller 6. The traverse device 8 and the contact rollers 6 extend over four winding points 10.1 to 10.4. For each winding location 10.1 to 10.4, the traverse device 8 has a traverse unit for guiding one of the plurality of threads 20. The traverse device 8 is driven by a traverse drive 8.1. The contact roller 6 is arranged on the holding carrier 5 via a roller carrier 7. The roller carrier 7 passes through the support carrier 4 in this example.

For each winding point 10.1 to 10.4, the thread 20 is respectively wound on the winding spindle 2 to form a package 9. For this purpose, the winding spindle 2 supports one winding tube 21 for each winding point 10.1 to 10.4.

The holding carrier 5 is movably arranged on the support carrier 4 and is connected to the support carrier 4 via a pivot bearing 11 . The pivot bearing 11 is arranged in the region of the supported end of the winding spindle 2 . The pivot support 11 has a pivot shaft 13 . The pivot axis 13 is laterally oriented and oriented approximately perpendicularly to the winding spindle 2 . Therefore, the holding carrier 5 is rotationally adjusted about the pivot axis 13.

As is clear in particular from the drawings in FIGS. 2 and 3, a guide device 15 is arranged between the support carrier 4 and the holding carrier 5. The guide device 15 is formed by a roller guide 16 in this embodiment.

Reference is additionally made to FIG. 4 to explain the roller guide 16. FIG. 4 schematically shows a cross-sectional view of the roller guide 16.

The roller guide 16 consists of two profile rails 16.2 and 16.3, between which the roller carriage 16.1 is slidably guided. There is. The profile rails 16.2, 16.3 are supported on a plurality of rollers 16.4, which are rotatably held in a roller carriage 16.1.

As can be seen in particular from the drawing in FIG. 2, the profile rail 16.3 is arranged on the support carrier 4 and extends approximately parallel to the unloaded winding spindle 2. The molding material rails 16.2 are arranged oppositely on the holding carrier 5, so that the upper molding material rail 16.2 is moved via the roller carriage 16.1 onto the lower molding material rail 16.3. is supported by The roller carriage 16.1 is connected to a pivot drive 12, which in this example is formed by a linear drive 17. The linear drive 17 may for example be constituted by a driven spindle, which is attached at one end to the roller carriage 16.1. By means of the linear drive 17, the roller carriage 16.1 is moved between the profile rails 16.2, 16.3. Due to the angle formed between the profile rails 16.2, 16.3, the movement of the roller carriage 16.1 allows the holding carrier 5 to be pivoted about the pivot axis 13 relative to the support carrier 4. be done. Thus, for example at the end of the package forming process, when the package weight is at its maximum, the roller carriage 16.1 is moved by the linear drive 17 towards the bearing end of the winding spindle 2 so that the holding carrier 5 The free end of is inclined relative to the support carrier 4 to follow the deflection of the contact roller 6 and the traversing device 8 and of the winding spindle 2.

As can be seen from the drawing in FIG. 1, a sensor device 18 is correspondingly arranged at the free end of the winding spindle 2, with which the position of the winding spindle 2 can be detected. Sensor device 18 is connected to control device 14 . The control device 14 is connected to the spindle drive 3, the traverse drive 8.1 and the swivel drive 12, in this case a linear drive 17.

In operation, the winding spindle 2 winds up a total of four threads 20 to form the package 9. The number of winding points and thus the number of packages 9 held on the winding spindle are exemplary. In principle, such a winding spindle can have a length of >1.80 m and can simultaneously wind 14, 16 or more packages. During the winding of the package 9, the free end of the winding spindle 2 is monitored by a sensor device 18, which may for example be a distance sensor. If the free end of the winding spindle 2 is displaced due to the bending load due to the weight of the package, a position change is sent to the control device 14 via the sensor device 18 . In the control device 14 the swivel drive 12 is controlled in such a way that the holding carrier 5 is swiveled around the swivel axis 13 by a defined swivel angle so that the contact rollers 6 contact each package 9 uniformly. . After the package 9 has been wound up to the end, the holding carrier 5 is returned to its starting position by actuation of the pivoting drive 12.

In the case where the distance between the pivot shaft 13 and the winding spindle 2 is large and an excessive axial displacement occurs in the lowered state, in particular the traversing section and the traversing section, which are based on mutually different rotation points, are provided. The possibility arises that this axial displacement with the package can be compensated by an axial movement of the holding carrier 5 in the support carrier 4. Alternatively, the possibility also arises of configuring the rotation point and thus the pivot bearing 11 of the holding carrier 5 to be axially displaceable on the support carrier 4 . Thereby, axial deviations due to mutually different rotation points of the holding carrier 5 and the winding spindle 2 can be completely compensated for.

In order to increase the axial distance between the winding spindle 2 and the contact roller 6 during the winding of the package 9 with respect to the increase of the package, the machine frame 1 has a carriage. This carriage allows the support carrier 4 to be height-adjustable together with the holding carrier 5. However, as an alternative, it is also possible to mount the winding spindle 2 in a carriage within the machine frame 1 and thereby change the position of the winding spindle 2. Typically, the winding spindle 2 is movably held in a movable package carrier in the form of a winding revolver, in which a second winding spindle is arranged. To this end, FIGS. 5 and 6 illustrate further embodiments of the winding machine according to the invention.

This embodiment is shown schematically in a side view in FIG. 5 and in a front view in FIG. Unless an explicit connection is made to one of the two figures, the following description applies to both figures.

In the embodiment illustrated in FIGS. 5 and 6, the winding spindle 2 is held in a winding revolver 19, which is rotatably mounted in the machine frame 1. A second winding spindle 2.1 is arranged on the winding revolver 19 and is arranged offset by 180° with respect to the winding spindle 2. A spindle drive 3, 3.1 is associated with the winding spindle 2, 2.1. The drive of the winding revolver 19 in the machine frame 1 is controlled by a revolver drive 19.1. A support carrier 4 extends parallel to the winding spindle 2, 2.1. One end of this support carrier 4 is attached to the machine frame 1. The support carrier 4 is provided with a movable holding carrier 5. The holding carrier 5 is connected to the support carrier 4 via a pivot bearing 11 . The pivot bearing 11 of the holding carrier 5 is arranged in the end region of the winding spindle 2, 2.1, the pivot axis 13 being oriented perpendicularly to the winding spindle 2, 2.1. ing. A contact roller 6 is rotatably supported and held on the holding carrier 5 via a movable roller carrier 7. A traverse device 8 is provided above the contact roller 6. The traversing device 8 has a total of four traversing units for the four winding locations 10.1 to 10.4.

A guide device 15 is arranged at the free end of the support carrier 4 . This guide device 15 extends between the support carrier 4 and the holding carrier 5. In this embodiment, the guide device is formed by a guide rail 22 and a guide groove 23. The guide rail 22 and the guide groove 23 have a radius of curvature. This radius of curvature is adapted to a pivoting movement about the pivot axis 13. The guide rail 22 is attached to the support carrier 4 and the guide groove 23 is correspondingly formed in the holding carrier 5. A pivot drive 12 is provided at the free end of the holding carrier 5 . The swivel drive 12 is likewise designed as a linear drive 17 in this exemplary embodiment. The linear drive 17 is held on the support carrier 4 and acts on the holding carrier 5 . The linear drive device 17 is connected to the control device 14 . Control device 14 is connected to sensor device 18 . The sensor device 18 monitors the respective state of the winding spindle during operation. The sensor device 18 can thus be a rotational speed sensor, which monitors the rotational speed of the contact roller relative to the spindle rotational speed and can thereby calculate the current package diameter. Additionally, drives 3, 3.1, 8.1, 19.1 are connected to control device 14.

During operation, one of the winding spindles, in this case winding spindle 2, is held in the operating region, so that one thread is wound in each of the winding positions 10.1 to 10.4. to form a package 9. In order to control the rotational movement of the winding revolver 19, a position monitoring device is assigned to the contact roller 6, so that when the package diameter increases, the rotation of the winding revolver 19 causes a rotational change relative to the winding spindle 2. The relative position of the contact rollers 6 remains maintained. The protruding end of the winding spindle 2 is monitored by a sensor device 18 so that possible deflections can be detected at an early stage. The function of the following of the contact roller 6 and the traversing device 8 by the movement of the holding carrier 5 relative to the support carrier 4 is the same as in the embodiment described above and will not be further explained here.

The winding machine according to the invention is therefore particularly suitable for winding uniform packages at several winding points on a long projecting winding spindle.

Claims (8)

A winding machine for winding a plurality of yarns, the winding machine comprising at least one elongated winding spindle (2) rotatably driven for winding the yarns to form a package. It comprises a winding spindle (2) held in a machine frame (1) and contact rollers (6) and traversing devices (8) for a plurality of winding points (10.1 to 10.4). , said traversing device (8) and said contact roller (6) are held on a movable holding carrier (5), said holding carrier (5) being mounted on a support projectingly mounted on said machine frame (1). In a winder, which is connected to the carrier (4),
The holding carrier (5) is held on the support carrier (4) by a pivot bearing (11) and is provided with a controllable pivot drive (12). the holding carrier (5) is movable relative to the support carrier (4);
The holding carrier (5) is guided at the projecting end of the support carrier (4) by a guide device (15), the guiding device (15) being able to guide the support carrier (4) and the holding carrier. (5), said guide device (15) comprising a roller carriage (16.1) guided between a plurality of forming material rails (16.2, 16.3). A winding machine characterized in that it is formed by a linear roller guide (16) . The pivot bearing (11) is formed in the region of the supported end of the winding spindle (2) and has a pivot axis (13) oriented transversely to the winding spindle (2). ) The winding machine according to claim 1 , wherein the winding machine has: One of the plurality of forming material rails (16.2, 16.3) is attached to the support carrier (4), and one forming material rail of the plurality of forming material rails (16.2, 16.3) is attached to the support carrier (4). .3) is attached to the holding carrier (5) , and both profile rails (16.2, 16.3) form an angle with respect to each other . Or the winding machine described in 2 . Winding according to claim 3 , characterized in that one of the plurality of profile rails (16.2, 16.3) is oriented parallel to the winding spindle (2). Machine. Claim 3 or 4 , wherein the swivel drive (12) is formed by a linear drive (17), which linear drive (17) is directly connected to the roller carriage (16.1). The winding machine described. Said swivel drive (12) is connected to a control device (14), said control device (14) comprising at least one sensor device (18) for detecting the state of said winding spindle (2). Winding machine according to any one of claims 1 to 5 , which is connected to a winding machine. The winding spindle (2) is arranged on a winding revolver (19), which supports a second winding spindle (2.1) and rotatably rotates the machine. 7. Winding machine according to claim 1, wherein the winding machine is mounted on a frame (1). Winding machine according to claim 7 , characterized in that the contact roller (6) is held on the holding carrier (5) by a movable roller carrier (7).

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