CN110248885B

CN110248885B - Method and device for operating a plurality of spinning positions of a melt spinning installation

Info

Publication number: CN110248885B
Application number: CN201880010363.XA
Authority: CN
Inventors: M·费希尔; J·希佩尔
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2017-02-07
Filing date: 2018-02-02
Publication date: 2021-06-01
Anticipated expiration: 2038-02-02
Also published as: CN110248885A; DE102017001090A1; JP2020506305A; DE112018000708A5; WO2018146012A1; JP7109457B2

Abstract

The invention relates to a method and a device for operating a plurality of spinning stations (1.1-1.7) of a melt spinning installation, wherein each of a plurality of yarn groups (8) is spun, drafted and wound to form a wound bobbin. Each spinning position (1.1-1.7) has a spinning device (2), a yarn guide disc unit (6) and a winding device (7). At least one suction lance (10) is provided for depositing one of the yarn groups (8) in a plurality of winding stations of one of the spinning stations. In order to be able to carry out the yarn deposition as efficiently as possible after an operating fault, according to the invention the suction lance (10) is positioned in the working position of the yarn collecting device (9) after the yarn deposition of the yarn group (8) in the winding position and interacts with the yarn guide (9.1) and the cutting device (9.3) in the yarn collecting device (9) for collecting the yarn. For this purpose, the suction lance (10) is held in a mounting of the yarn collection device (9) after the yarn has been laid. In this respect, the suction gun (10) can be used for yarn collection and yarn laying in a dual-functional manner.

Description

Method and device for operating a plurality of spinning positions of a melt spinning installation

Technical Field

The invention relates to a method for operating a plurality of spinning stations of a melt spinning device and to a device for operating a plurality of spinning stations of a melt spinning device.

Background

The production of synthetic threads is carried out by a melt spinning device having a plurality of spinning stations. The spinning stations are arranged next to one another to form the machine longitudinal front side. Each spinning station has a spinning device with a plurality of spinning nozzles for extruding a plurality of yarns. The threads of the spinning position are jointly drawn off as a thread group from the spinning nozzle and are wound in parallel at the end of the process on a plurality of winding positions of the winding device to form a wound bobbin. The winding device is equipped with two winding spindles, which are held on a winding turret, enabling continuous production of the yarn in the spinning station. The thread group needs to be guided by auxiliary devices and laid, for example, on the thread-guide-disc unit and the winding station only at the beginning of the working process or at a break in the process. The auxiliary device has at least one suction gun by means of which the thread groups are continuously received and guided to a waste thread box. Such an auxiliary device is known, for example, from DE10009335a1, which discloses a generic method and a generic device for operating a plurality of spinning stations of a melt spinning installation.

In the case of the known method and the known device for operating a plurality of spinning stations of a melt spinning installation, the spinning stations are assigned to a suction gun for depositing the yarn at the start of the process or in the event of a process interruption, which suction gun can be selectively guided to the spinning station to be serviced. The suction gun is connected via a waste line to a relocatable waste yarn box, so that the yarn extruded at the spinning position during the laying phase is continuously received and discharged.

In the event of process interruptions, for example due to a failure of the winding device, it is also known to collect and cut the yarn group by means of a yarn collecting device and to receive and remove it by means of a suction device. Such a yarn collecting device is known from DE102007014511a1 and is described here, for example. In order to be able to deposit the thread package again after a break in the process, the thread package is usually taken up by a suction gun and guided to a winding station. Auxiliary means are required here which allow the yarn set to be obtained by the suction gun.

Disclosure of Invention

The object of the invention is to develop a generic method for operating a plurality of spinning stations of a melt spinning installation and a generic device for operating a plurality of spinning stations of a melt spinning installation, which allow, with a minimum complexity in terms of the installation, a rapid laying of a group of threads at one of the plurality of spinning stations of the melt spinning installation after a break in the working process.

According to the invention, this object is achieved by a method and a device.

The invention has the significant advantage that the work for laying the yarn sets in one of the spinning places can be carried out in an extremely efficient manner. The time-consuming acquisition of the yarn sets is avoided both during the splicing and after interruptions in the working process. For this purpose, the suction gun is positioned in the operating position of the thread collection device after the laying of the threads of the thread group on the winding station, so that in the thread collection device, it interacts with the thread guide and the cutting device for the purpose of collecting the threads. The suction gun can then also be advantageously used for receiving and discharging the yarn during a process interruption. The double function of the suction lance in the operation of the spinning station results in a significant time saving, thus resulting in shorter operating times and thus less waste yarn.

In order to be able to exploit the advantages mentioned at each spinning position, it is also provided that the yarn groups in the spinning position can be guided by a plurality of individual suction guns, which are each located in the working position of a plurality of yarn collecting devices. Each yarn collecting device assigned to a spinning position then has a mounting for accommodating a suction gun. Additional operating time caused by the change of the position of the suction gun can then be avoided. Each spinning station is provided with a separate suction gun, whereby easy handling is ensured at all times when laying the yarn.

In order to be able to use the suction lance without restriction in terms of dual function, the suction lances in the spinning stations are each connected to a central waste pipe by a flexible waste line. A relatively short waste line for feeding waste yarn into the central waste pipe can thus be realized.

The dual function of the suction gun according to the invention is particularly suitable for automating the operation of the spinning stations of a melt spinning apparatus. The suction gun for laying the yarn can then be guided and operated in sequence by an operating robot selectively guided to the spinning station.

In principle, the advantages of the method and the device according to the invention can also be utilized when the suction gun is guided by a human operator.

In order to be able to introduce the suction lance into the working position of the thread collection device, according to a preferred development of the invention, the mounting sections of the thread collection device are each designed with a plug connection for connecting the suction lance to the machine control unit. The suction guns can then be activated and deactivated independently of each other by the machine control unit. In the yarn collecting device, the suction gun can then generate a suction flow as required to collect the yarn. Such a plug connection can also be advantageously implemented between the handling robot and the suction gun.

Drawings

The method according to the invention for operating a plurality of spinning stations of a melt spinning apparatus will be explained in more detail below by means of an embodiment of the device according to the invention for operating a plurality of spinning stations of a melt spinning apparatus with reference to the drawing, in which:

figure 1 shows schematically a front view of a plurality of spinning places with one embodiment of the device for operating spinning places of the invention,

FIG. 2 schematically shows a side view of the spinning station of FIG. 1;

figure 3 shows schematically a view of a yarn collection device with a suction gun connected thereto,

FIG. 4 shows a schematic front view of a plurality of spinning stations in different operating positions of the device according to the invention, an

Fig. 5.1 and 5.2 show schematically a side view of one of the spinning places with the device according to the invention when the yarn is deposited.

Detailed Description

In the front and side views of fig. 1 and 2, a melt spinning device with a plurality of spinning stations is shown, into which an embodiment of the device according to the invention is introduced. The following description applies to both figures unless one is explicitly mentioned.

The melt spinning device has a plurality of spinning stations 1.1-1.7, which are arranged next to one another in a row and form the longitudinal side of the machine. The number of spinning positions shown in fig. 1 is merely exemplary. In principle, such melt spinning apparatuses comprise a plurality of such spinning stations.

The spinning places shown in fig. 1 and 2 have the same design with regard to their construction. In the following, the device is described in more detail using the example of a spinning place 1.1 as shown in the side view of fig. 2.

Each spinning position 1.1-1.7 has a spinning device 2. The spinning device 2 comprises a spinning beam 2.2, on the underside of which a plurality of spinning nozzles 2.1 are supported. The spinning nozzles 2.1 are connected to a spinning pump 2.3, which is preferably designed as a manifold pump and generates a separate melt stream for each spinning nozzle 2.1. The spinning pump 2.3 is connected via a melt supply 2.4 to a melt source (not shown here in any greater detail) such as an extruder.

A cooling device 3, which is formed by a cooling duct 3.1 in a blower chamber 3.3, is arranged in this embodiment below the spinning device 2. A drop channel 3.2 is provided after the cooling duct 3.1 in the direction of yarn travel.

Below the drop channel 3.2 there is a collecting device 4 with a plurality of thread guides 4.1 for jointly guiding the filaments extruded by each spinning nozzle 2.1 to form one thread. In this embodiment, the spinning device produces four yarns. The number of yarns is exemplary. Such a spinning device 2 can thus produce up to 32 yarns per spinning position.

The spinning preparation device 5 is assigned to the collecting device 4, and the yarn group 8 is wetted by the spinning preparation device 5. The yarn group 8 is drawn out by the yarn guiding tray unit 6 and supplied to the winding device 7. In this embodiment the guide disc unit is formed by two active guide discs 6.1.

The winding device 7 has one winding position 7.5 for each thread of the thread group 8. The winding station 7.5 extends along a winding spindle 7.1 which is held in a projecting manner on the winding turret 7.2. The winding turret 7.2 supports two winding spindles 7.1, which are guided in an alternating manner in the winding zone and the change zone.

Each winding position 7.5 for dividing and separating the thread groups 8 is assigned to a deflection roller 7.6, which deflection roller 7.6 is arranged directly downstream of the thread-guide disc unit 6. Each winding station 7.5 has a traversing unit 7.3 for winding and depositing the thread to form a winding bobbin. The traversing unit 7.3 interacts with a contact pressure roller 7.4, which is arranged parallel to the winding spindle 7.1 and contacts the surface of the winding bobbin 14 when winding the thread.

The spinning stations 1.1 to 1.7 are in their normal operating state as shown in fig. 1 and 2, in which case a yarn group 8 consisting of a plurality of yarns is extruded and continuously wound on each spinning station 1.1 to 1.7 to form a wound bobbin 14.

In order to be able to operate the spinning places in the event of a disruption or a restart of the operation, a separate suction lance 10 is assigned to each spinning place 1.1-1.7. In the operating condition shown in fig. 1 and 2, the suction gun 10 is in place in the operating position of the yarn collecting device 9. Each spinning position 1.1-1.7 comprises a separate yarn collecting device 9, which yarn collecting devices 9 have the same structure and are all arranged upstream of the guide disc unit 6 in the yarn direction. For the purpose of explaining the yarn collecting device, reference will be made to fig. 3 below.

The yarn collecting device 9 of the spinning position 1.1 is schematically shown in the front view of fig. 3. The yarn collecting device 9 has a movable yarn guide 9.1 which is connected to a linear drive 9.2 and is arranged in the yarn movement plane of the yarn set 8. The thread collection device 9 has a mounting 9.4 on the side opposite the thread group 8, on which the suction gun 10 is held. The suction tube 10.3 of the suction gun 10 is held opposite the thread guide 9.1. The suction pipe 10.3 of the suction gun 10 is assigned a cutting device 9.3, which is also held opposite the thread guide 9.1. The suction lance 10 is connected to a central waste pipe 11 by means of a flexible waste line 10. The supply of compressed air to the suction gun 10 takes place via a flexible compressed air line 10.2 which is connected to a (not shown here in greater detail) compressed air source. For controlling the suction gun 10, the mounting part 9.4 of the yarn collecting device 9 comprises a plug connection 9.5. The connection to the machine control unit 13 is ensured by the plug connection 9.5.

As can be taken from the view of fig. 1, the machine control unit 13 is connected to the respective yarn collecting device 9 in each spinning position 1.1-1.7.

It can also be seen from fig. 1 that a central waste conduit 11 extends along the spinning places 1.1-1.7 and is connected to a waste yarn box 12. The suction lance 10 held in the yarn collection device 9 is then collected by a separate waste line 10.1 to be connected to a central waste pipe 11.

In the operating condition shown in fig. 1 and 2, the yarn collecting device 9 is not operated, and therefore the suction gun 10 held in the mounting portion 9.1 is deactivated. The respective yarn collecting device 9 of the respective spinning device 1.1-1.7 is activated only in the event of a malfunction, for example in the event of a yarn break in one of the winding positions. For this purpose, fig. 4 shows an embodiment of one of the spinning positions, in which the yarn collecting device is activated. The two spinning positions 1.1, 1.2 are each shown in the front view of fig. 4 in different operating states.

In the case of the spinning position 1.2 as shown in fig. 4, a malfunction has just occurred, as a result of which the yarn collecting device 9 is activated to collect the yarn group 8. In this operating state, the thread group 8 is guided by the thread guide 9.1 to the cutting device 9.3 and the suction gun 10. The suction gun 10 has previously been activated by the machine control unit 13, so that a suction flow is effectively present at the suction tube 10.3 of the suction gun 10. The thread group 8, when cut by the cutting device 9.3, can then be sucked by the suction pipe 10.3 of the suction gun 10 and fed via the waste line 10.1 into the central waste pipe 11.

The adjacent spinning position 1.1 shows the operating state in which the yarn package 8 is to be deposited on the yarn guide disc unit 6 and the winding position 7.5 of the winding device 7 after an interruption in operation. In this case, the suction gun 10 has been taken out of the mounting 9.4 of the yarn collecting device 9 and can now be guided by an operating robot or operator in order to deposit the set of yarns 8.

The spinning place 1.1 of fig. 5.1 is shown in a side view, in which the suction lance 10 is guided by the handling robot 15. The handling robot 15 is held in a height-adjustable manner on a movement gear 15.1, which can be repositioned parallel to the machine longitudinal sides of the spinning stations 1.1-1.7. The handling robot 15 has a projecting handling arm 15.2 with a plurality of articulated joints, the suction gun 10 being connected to the end of said handling arm 15.2. The operating arm 15.2 can now be controlled by means of a control program in such a way that the suction gun 10 can deposit the thread group 8 guided on the suction tube 10.3 in the thread-guide-reel unit 6 and the winding device 7. When the laying process is completed and the yarn winding is started, the suction gun 10 is guided back into the mounting 9.4 of the yarn collecting device 9 and positioned therein by the operating arm 15.2.

The automatic operation of the spinning place 1.1 as shown in fig. 5.1 can in principle also be carried out by an operator. The situation where the suction gun 10 is guided by the operator is shown in fig. 5.2. The sequence for laying the set of threads is essentially the same as described above. The suction gun 10 is guided by the operator in such a way that the thread can be laid and threaded into the set device. At the end of the depositing process, the suction lance 10 is guided back into the yarn collection device 9.

To activate the suction gun, the latter may comprise, for example, an electrically controlled valve, which may be actuated wirelessly by means of a button or signal connection. Manual and automatic operation capability of the suction gun outside and inside the mounting of the yarn collecting device 9 can thus be achieved.

Claims

1. A method for operating a plurality of spinning stations of a melt spinning installation, in which a yarn set of a plurality of yarn sets is respectively spun, drawn and wound to form a winding bobbin, wherein the yarn set is guided by a suction gun for depositing the yarn set at a plurality of winding stations of one of the spinning stations, characterized in that the suction gun is in position in a working position of a yarn collecting device after depositing the yarn of the yarn set at the winding station, and the suction gun interacts with a yarn guide and a cutting device in the yarn collecting device for yarn collection.

2. Method according to claim 1, characterized in that the yarn group in the spinning station can be guided by a plurality of individual suction guns, each suction gun being in place in the working position of a plurality of yarn collecting devices.

3. Method according to claim 1 or 2, characterized in that the suction gun for laying down the yarn is guided and operated by an operating robot selectively guided to the spinning place.

4. The method as claimed in claim 1, characterized in that the suction guns in the working position of the yarn collection device are activated and deactivated independently of one another by a machine control unit.

5. The method of claim 1, wherein a suction gun for laying the yarn is guided and operated by an operator.

6. An operating device for operating a plurality of spinning stations (1.1-1.7) of a melt spinning installation, which operating device has one spinning device (2), one yarn guide disc unit (6) and one winding device (7) for each spinning station (1.1-1.7) and which operating device has at least one suction gun (10) for laying a plurality of yarns of a yarn group (8) on one of the spinning stations (1.1-1.7), characterized in that the suction gun (10) can be brought into position in a mounting (9.4) of one of a plurality of yarn collecting devices (9) after the laying of the yarns and in that the suction gun (10) interacts with at least one yarn guide (9.1) and a cutting device (9.3) in the yarn collecting device (9) for yarn collection.

7. Operating device according to claim 6, characterized in that a plurality of suction guns (10) for laying the yarn are assigned to the spinning stations (1.1-1.7) and that these suction guns (10) can be positioned in a plurality of mountings (9.4) of the yarn collecting device (9).

8. Operating device according to claim 7, characterised in that the suction lances (10) in the spinning stations (1.1-1.7) are connected to a central waste conduit (11) by means of a flexible waste line (10.1).

9. Operating device according to one of claims 6 to 8, characterized in that the suction lance (10) for depositing can be operated by an operating robot (15) or by an operator, wherein the operating robot (15) can be selectively guided to one of the spinning places (1.1-1.7).

10. Operating device according to any one of claims 6 to 8, characterized in that the mounting portion (9.4) of one of the yarn collecting devices (9) has a plug connection (9.5) for connecting the suction gun (10) to a machine control unit (13).