JP2020517843A - Method and apparatus for setting up a plurality of spun yarns - Google Patents

Abstract

The present invention relates to a method and a device for setting a plurality of yarns at a plurality of winding points of a winder, wherein the yarns are drawn by a stationary suction device after spinning from a plurality of spinning nozzles and together. Guide it as a yarn group and carry it out to a waste container. In order to keep the operating effort as small as possible, according to the invention, the guide means and the lower stationary suction device are provided below the winding spindle of the winding machine, the thread group then being provided. In one thread section before it enters the suction device by means of a guide means and is fed as a thread loop to the lower stationary suction device.

Description

The present invention relates to a method for setting a plurality of yarns at a plurality of winding points of a winding machine, which is described in the general concept part of claim 1, and a winding method described in the general concept part of claim 5. A device for setting a plurality of yarns at a plurality of winding points of a machine.

When producing synthetic yarns in a melt-spinning process, it is common for a plurality of yarns to be spun parallel to one another in one spinning position by means of spinning nozzles. After treating the yarns individually according to the yarn type, the yarns are wound into packages by winding spindles at multiple winding points of the winder. Such a melt spinning apparatus is disclosed, for example, in WO 1999/037835.

In case of a process failure, a suction device is provided below the spinning device, in which the yarn produced by the spinning nozzle is continuously stored and discharged into a waste container. It This ensures that it is not necessary to interrupt the extrusion of the yarn in the spinning nozzle.

As soon as the obstacles in the process have been eliminated, it is necessary to set the yarn anew at the winding point of the winding machine. For this purpose, it is customary for the thread group to be accommodated by means of a hand-guided suction gun and to be guided by the operator for a tackle. It is therefore necessary for the operator to separate the yarn bundle from the stationary suction device and to deliver it by means of a hand-guided suction gun. The suction gun is then guided towards the winding machine, whereby an auxiliary device arranged on the winding machine catches the yarn bundle and feeds it to the winding station for setting. In that respect, the conventional method for setting multiple yarns at multiple winding points is very cumbersome to operate.

It is therefore an object of the present invention to provide a method and a device for setting a plurality of yarns at a plurality of winding points of a winding machine, which enables a yarn group to be supplied to a winding point as quickly and reproducibly as possible. It is to be.

Another object of the invention is to make the method and apparatus for setting up a plurality of spun yarns as automated as possible.

In order to solve this problem, in the method according to the invention, the yarn group is caught by the guide means in one yarn section before entering the suction device and, as a yarn loop, on the lower side under the winding spindle. Supply to a stationary suction device.

Correspondingly, in the device according to the invention for solving this problem, the winding machine has a lower stationary suction device under the winding spindle, and the lower suction device is a movable guide. In cooperation with the means, the guide means enable the yarn group contained by the upper suction device to be fed as a yarn loop to the lower suction device.

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

The invention is based on the recognition that the yarns accommodated by the stationary suction device are radially gathered at the focusing point when withdrawn from the spinning nozzle. The individual yarns are therefore guided with a yarn spacing which varies in relation to the height. In order to take advantage of this effect, the present invention now places a lower stationary suction device underneath the winding spindle, to which the yarn bundle is transferred by the guide means. At this time, the guide means catches the yarn group in a portion in which the yarns of the yarn group are almost guided in a bundle shape immediately before the entry portion in the upper suction device. After the yarn group has been delivered to the lower stationary suction device, the radially fed yarn can be suitably captured and set in the area of the winding point.

The device according to the invention therefore has a lower stationary suction device, which is arranged below the winding spindle of the winder. At this time, the lower suction device cooperates with the movable guide means, whereby the yarn group accommodated by the upper suction device can be supplied to the lower suction device as a yarn loop. Therefore, a manual operation step is not required to set the yarn group at the winding position of the winding machine.

According to a preferred variant of the invention, the yarn strands of the yarn loop are cut so as to enable a defined acceptance of the yarn group by the lower suction device and a defined catch by the lower suction device. Be cut by means. At this time, the yarn strands generated between the upper suction device and the guide means are supplied to the cutting means. The cutting means are therefore arranged directly corresponding to the lower suction device.

In order to be able to keep the thread tension produced during the loop formation in the thread group as small as possible, the guide means have a freely rotatable guide roller, which is movable. It is held by a roller holder. With this structure, the yarn group can be guided along the guide means without slipping.

Normally, when the thread group is cut, a counter resistance is required to prevent the thread group from escaping, so in a suitably constructed development of the invention, the guide roller is provided by a roller holder between a catching position and a catching position. The guide rollers cooperate with the lower suction device in the receiving position. With this configuration, the position-locking environment can be directly utilized to improve the cutting and acceptance of the yarn group by the lower suction device.

In order to enable the thread group to be engaged from the outside of the winding position, the roller holder is further formed by a swivel arm and a guide carriage, which swivel arm is movable in height. And the swivel arm holds the guide roller at its free end, the guide carriage is guided along the guide rail by the carriage drive and the swivel arm is then It is controlled by a turning drive.

In order to be able to finish the process for setting the yarn at the winding point, the winding machine has an auxiliary device by which the yarn group is It can be caught at one yarn part and fed to the winding point. Due to the height difference between the lower suction device and the auxiliary device, the yarn spacing that occurs between the individual yarns of the yarn group is preferably used to enable the selection of yarns for setting up on the winding point. be able to.

The method according to the invention and the device according to the invention for setting up a plurality of yarns at a plurality of winding points of a winding machine thereby allow a relatively short interruption time after a failure in the melt-spinning process. Provides great benefits. By means of a preset control algorithm, threading at the winding position of the winding machine can be carried out automatically. This allows manual operations during the melt-spinning process to be focused solely on removing obstacles.

The method according to the invention will now be described in detail with the aid of an embodiment of the device according to the invention for setting a plurality of yarns at a plurality of winding points of a winding machine, with reference to the accompanying drawings.

1.1 and 1.2 are schematic side views of an embodiment of the device according to the invention in a plurality of operating situations. 2.1 and 2.2 are schematic front views of the embodiment shown in FIG. 1.1 in different operating situations. Figure 2 is a side view schematically showing the embodiment shown in Figure 1.1 in operation.

FIGS. 1.1 and 2.1 schematically show an embodiment of the device according to the invention in several perspectives. An embodiment is shown in side view in FIG. 1.1 and in a front view in FIG. 2.1. The following description refers to both figures unless one of the figures is highlighted. Embodiments are incorporated into a melt spinning apparatus for producing synthetic yarn. The melt spinning device has a spinning device 1, a cooling device 2, a godet device 5, and a winding machine 6 which are arranged above and below each other. The basic point here is that such melt-spinning devices include further process assemblies, such as, for example, an oil feeding device, an entanglement device, a texturing device and/or a crimping device. You may. Similarly, the configuration of the godet device 5 is also an example.

The spinning device 1 has a heated spinning beam 1.1, which holds a plurality of spinning nozzles 1.2 below it. Since the spinning nozzle 1.2 is formed as a so-called double nozzle in this embodiment, two yarns are extruded from each spinning nozzle 1.2. The spinning nozzle 1.2 is connected to the spinning pump 1.3. The spinning pump 1.3 is designed as a multipump and is connected via a melt supply channel 1.4 to a melt source, not shown here, such as an extruder.

A cooling device 2 is arranged below the spinning device 1, and this cooling device 2 has a blow chamber 2.2 and a cooling duct 2.1. The cooling duct 2.1 may be formed, for example, by a cooling cylinder arranged inside the blow chamber 2.2. The blow chamber 2.2 is connected to an air conditioner not shown here. Since the cooling duct 2.1 has a gas-permeable wall, the extruded yarn is cooled by the conditioned air flowing into the cooling duct 2.1 from the blow chamber 2.2. Below the cooling duct 2.1, a drop duct 2.3 is connected. Inside the drop duct 2.3, one collecting yarn guide 3 is provided for each spinning nozzle 1.2 below the cooling duct 2.1. The yarns extruded as a plurality of filaments by the collective yarn guide 3 are separated and collected as a filament bundle.

Below the drop duct 2.3 is a godet device 5, which has a plurality of projecting godets 5.1, 5.2 held by a holder 5.4. In the godets 5.1 and 5.2, godet drive devices 5.3 are respectively arranged on the back surfaces of the holding bodies 5.4.

The holder 5.4 of the godet device 5 is supported on the machine frame 6.10 of the winder 6.

The winding machine 6 has a rotatably supported winding turret 6.3 which holds two winding spindles 6.2 which are supported so as to project. doing. The take-up spindle 6.2 is connected to a spindle drive 6.4. The take-up turret 6.3 is rotatable via a turret drive 6.5, so that the take-up spindle 6.2 can be swiveled alternately between the operating area and the changing area.

In the operating region, the winding spindle 6.2 operates in a plurality of winding points 6.1. In this embodiment, a total of four winding points 6.1 are formed on the winding machine 6. The winding points 6.1 are of identical construction and each have a deflection roller 6.9 and a traversing device 6.7. A diverting roller 6.9 is arranged downstream of the godet device 5 in order to distribute the yarn to the winding point 6.1. The traverse device 6.7 has, for each yarn, one traverse means for guiding the yarn back and forth. A crimping roller 6.6 is provided for threading around the wound package, which crimping roller 6.6 extends parallel to the winding spindle 6.2.

A stationary suction device 4 is provided above the godet device 5 in order to be able to accommodate the extruded thread in the event of a failure. The device shown here as the upper suction device 4 has a yarn catcher 4.3 by means of which the yarn group 9 is withdrawn at the time of a fault notification, and the suction opening 4.1 and the waste line 4. 2 to a waste container, not shown here in detail. To that end, a cutting blade 4.4 is associated with the yarn collector 4.3, which produces a yarn end in the yarn group 9 for sucking into the suction opening 4.1. It is tightened.

A lower suction device 7 is associated with the winding machine 6 in order to set the yarns of the yarn group 9 at the winding point 6.1. This lower suction device 7 is arranged below the winding spindle 6.2. The lower suction device 7 has a suction opening 7.1 and a scrap line 7.2, which are used for accommodating the thread group and for waste. Cooperate to discharge the yarn bundle into the container. A cutting means 7.3 is associated with the suction opening 7.1. The cutting means 7.3 is preferably formed by one or more blades, such blades being able to cut the yarn bundle with the least possible cutting resistance.

The upper suction device 4 and the lower suction device 7 cooperate with the guide means 8 by means of which the yarn group can be delivered from the upper suction device 4 to the lower suction device 7.

In this embodiment, the guide means 8 is formed by a freely rotatable guide roller 8.1, which is held by the swivel arm 8.2. The swivel arm 8.2 is configured to be swivelable laterally to the yarn traveling direction via a swivel drive device 8.3. The swivel arm 8.2 and the swivel drive 8.3 are arranged on a guide carriage 8.4. The guide carriage 8.4 can be reciprocally guided by a carriage driving device 8.6 along a vertically oriented guide rail 8.5. Therefore, the guide rail 8.5 is arranged laterally with respect to the end surface of the winder 6.

In Figures 1.1 and 2.1, the melt spinning device is shown in one operating state, in which the yarn group 9 is continuously discharged into the waste container via the upper suction device 4. There is. The godet device 5 and the winder 6 are in a tackle mode so that the yarn group 9 can be accommodated. For this reason, the godet 5.1, which is held movably in the godet device 5, has been moved to the tacking position, as indicated by the dashed line in FIG. The winding machine 6 has an auxiliary device 6.8, which in this case is designed as a movable roller carrier 6.8 which holds a deflecting roller 6.9. The roller holder 6.8 is held at the advanced position (illustrated by the broken line). The guide means 8 are now guided to the collection position. At the collecting position, the guide carriage 8.4 is held at a position above the guide rail 8.5. The swivel arm 8.2 provided with the guide roller 8.1 is swung inward into the yarn running path of the yarn group 9 via the swivel drive device 8.3, at which time the guide roller 8.1 moves the yarn group 9 Directly at the yarn part directly above the suction device 4. As soon as the yarn group 9 is guided along the circumference of the guide roller 8.1, the guide carriage 8.4 is driven by the carriage drive 8.6. The guide carriage 8.4 is separated from the collecting position and guided to the lower receiving position at the lower end of the guide rail 8.5. At this time, a yarn loop 9.1 is formed on the guide roller 8.1. At this time, the yarn pushed out from the spinning nozzle 1.2 is still accommodated by the suction device 4 and wound around the guide roller 8.1. This situation is illustrated by the dashed lines in Figures 1.1 and 2.1.

In the situation of the melt spinning device shown in FIGS. 1.2 and 2.2, the yarn group 9 is accommodated and guided by the lower suction device 7. For this purpose, the guide means 8 is in the lower catching position, at which time the yarn group on the guide roller 8.1 is swung by the swivel arm 8.2 by the cutting means 7.3 and the suction opening 7. 1 is supplied. The cutting means 7.3 cuts the yarn strand of the yarn loop 9.1 guided between the suction device 4 and the guide roller 8.1. At this time, after the thread group 9 has been cut, the formed end is accommodated by the suction opening 7.1 of the lower suction device 7. This situation is shown in Figures 1.2 and 2.2.

The swivel arm 8.2 with the guide rollers 8.1 is guided to the neutral position. To set up the yarn at the winding point 6.1, the auxiliary device 6.8 is now activated. The deflecting rollers 6.9 held by the movable roller holding body 6.8 are held in the tacking position by being displaced from each other in accordance with the yarn spacing shown in FIG. The thread take-up, which is guided at a certain thread interval, is selected and transferred to the winding position. The height interval between the auxiliary device 6.8 and the lower suction device 7 is determined in advance in the area of the auxiliary device 6.8 when the yarn interval shown in FIG. Aligned to occur.

Finally, the godet 5.1 of the godet device 5 is transferred from the setting position to its operating position, whereby the melt-spinning device is ready for continuous production of synthetic yarn. FIG. 3 shows the melt spinning device in a normal operating state. The threads of the thread group 9 are wound on the package.

The auxiliary device shown in the above-described embodiment for selecting a yarn group when setting the winding point is an example. What is important for the method according to the invention and the device according to the invention is the linkage between the upper and lower stationary suction devices with suitable guide means for forming the thread loops. Instead of the guide roller, it is also possible to use a thread guide or a thread rod as the guide means.

Claims (10)

A method for setting a plurality of spun yarns at a plurality of winding points of a winding machine, the method comprising: a plurality of spinning nozzles, the method comprising: In the method, after spinning from, is drawn out by a stationary suction device, guided together as a group of yarns and discharged into a waste container,
The yarn group is captured by the guide means in one yarn section before entering the suction device and is fed as a yarn loop to the lower stationary suction device under the winding spindle. Method. Cutting the yarn strands of the yarn loop by cutting means for receiving the yarn group in the lower suction device,
The method of claim 1. Feeding the thread strands of the thread loop to the cutting means for cutting by movement of the guide means,
The method of claim 2. The yarn group is caught by an auxiliary device at one yarn portion before entering the lower suction device and is fed to the winding point.
Method according to any one of claims 1 to 3. A device for setting a plurality of spun yarns at a plurality of winding points (6.1) of a winding machine (6), said winding points (6.1) being projecting winding spindles (6.1). On a winder (6), with a spinning device (1) having a plurality of spinning nozzles (1.2) for spinning said yarn, which are arranged alongside each other along 6.2). An upper stationary suction device (4) is provided, by means of which the yarn is withdrawn from the spinning nozzle (1.2), guided as a yarn group (9) and a waste container In the device that is transported to
The winder (6) has a lower stationary suction device (7) below the winding spindle (6.2), and the lower suction device (7) comprises: The yarn group (9) accommodated by the upper suction device (4) cooperates with a movable guide means (8) to form a yarn loop (9.1). Device capable of supplying to said lower suction device (7). The lower suction device (7) has a cutting means (7.3), said cutting means (7.3) guiding said thread loop (9.) by said guiding means (8). The thread strand of 1) can be cut,
The device according to claim 5. The guide means (8) is formed by a rotatable guide roller (8.1), and the guide roller (8.1) is held by a movable roller holding body (8.2, 8.4). Has been
The device according to claim 5 or 6. The guide roller (8.1) can be guided between the collecting position and the receiving position by the roller holder (8.2, 8.4), and the guide roller (8.1) is Adapted to cooperate with the lower suction device (7) in the receiving position,
The device according to claim 7. The roller holder is formed by a swivel arm (8.2) and a guide carriage (8.4), and the swivel arm (8.2) is movable in height by the guide carriage (8.4). ), the swivel arm (8.2) holds the guide roller (8.1) at its free end, and the guide carriage (8.4) comprises a carriage drive (8. 6) is guided along a guide rail (8.5) and the swivel arm (8.2) is controllable by a swivel drive (8.3),
The device according to claim 7 or 8. The winding machine has an auxiliary device (6.8) by means of which the yarn group forms one yarn part before entering the lower suction device (7). And can be supplied to the winding point (6.1),
Device according to any one of claims 6-9.

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