JP7109457B2 - Method and Apparatus for Operating Multiple Spinning Stations in Melt Spinning Equipment - Google Patents

Description

The present invention provides a method for operating a plurality of spinning stations of a melt spinning installation according to the preamble of claim 1 and a plurality of spinning stations of a melt spinning installation according to the preamble of claim 6. It relates to a device for operating the

Synthetic yarn production is carried out by melt spinning equipment with multiple spinning stations. The spinning stations are then arranged side by side to form one machine longitudinal front. Each of the spinning stations has a spinning device with a plurality of spinning nozzles for extruding a plurality of yarns. The yarns of one spinning station are drawn together as a group of yarns from the spinning nozzle and, at the end of the process, are wound parallel to one another into a package at several winding points of the winding device. The winding device comprises two winding spindles held in a winding turret so that the yarn can be produced continuously at the spinning station. Only at the start of the process or when the process is interrupted is it necessary to guide the yarn swarm by means of auxiliary devices and to set it, for example, at the godet unit and at the winding point. Such an auxiliary device has at least one suction gun by means of which the thread group is continuously picked up and guided into a waste bin. Such an auxiliary device is known, for example, from DE 10009335 A1, which describes several spinning stations of a melt spinning installation of the type mentioned at the outset. A method and apparatus for operation are disclosed.

In known methods and devices for operating a plurality of spinning stations of a melt spinning installation, the spinning stations are associated with suction guns for threading at the start of the process or at process interruptions. The gun is selectively feedable to the spinning station to be activated. The suction gun is connected via a waste duct to a lint receptacle which can be driven, so that the extruded yam at the spinning station can be continuously received and discharged during the rigging phase.

In the event of a process interruption, for example due to a malfunction in the winding device, it is also known that the yarn group is collected by a yarn gathering device, cut, picked up by a suction device and discharged. Such a thread gathering device is known, for example, from DE 102007014511 A1 (DE 102007014511 A1) and is described therein. In order to be able to reapply the yarn group after such an interruption in the process, it is customary for the yarn group to be taken up by a suction gun and supplied to the winding point. A separate auxiliary device is then required to enable the thread group to be picked up by the suction gun.

SUMMARY OF THE INVENTION The object of the present invention is therefore to provide a method for operating several spinning stations of a melt spinning installation of the type mentioned at the outset, and a method for operating several spinning stations of a melt spinning installation of the type mentioned at the beginning. To provide a method and apparatus for improving the apparatus to enable a group of yarns to be quickly set at one spinning position of a plurality of spinning positions of a melt spinning facility after a process interruption with little effort for the apparatus. That is.

This task is solved according to the invention by a method with the features of claim 1 and by a device with the features of claim 6 .

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

The invention has the great advantage that the working steps for setting up the yarn groups at one of the spinning stations can be carried out very effectively. Time-consuming taking over of the yarn group can be avoided both at the start of spinning and during process interruptions. To that end, the suction gun is positioned in the operating position of the yarn gathering device after the yarns of the yarn group at the winding point, whereby the suction gun moves together inside the yarn gathering device the yarn guide and the yarn gathering device to collect the yarns. It can cooperate with a cutting device. The suction gun can thus also be advantageously used for receiving and discharging yarn during process interruptions. Due to the double function of the suction gun, considerable time savings are achieved when the suction gun is activated, which results in relatively short operating times and thus relatively little lint.

In order to be able to use these advantages at each spinning station of the spinning station, it is further provided that the yarn group can be guided at the spinning station by a plurality of separate suction guns, each of which is associated with a plurality of yarn gathering It has been proposed to position the device in its working position. In such a case, each yarn gathering device of the yarn gathering devices associated with the spinning station has a respective holder for receiving a suction gun. Additional operating time due to repositioning of the suction gun can thereby be avoided. Each of the spinning stations has a separate suction gun, which always ensures ease of use when threading.

In order to allow unlimited use of the double function of the suction guns, the suction guns are connected in each spinning position via a flexible waste line to a central waste channel. In this way, a relatively short waste duct can be realized for conveying the lint to the central waste channel.

The double function according to the invention of the suction gun is particularly suitable for automating the actuation of the spinning stations of melt spinning installations. In such a case, the suction gun can be guided and actuated in succession by an automatic actuating device which is selectively transported to the spinning position to set the yarn.

In principle, the advantages of the method according to the invention and the device according to the invention can be used even when the suction gun is guided by an operator.

In order to be able to connect the suction gun to the process in the working position of the yarn gathering device, the holder of the yarn gathering device, according to a preferred development of the invention, connects the suction gun to the machine control unit. has a plug-in connection for each. In such cases, the suction guns can be activated and deactivated independently of each other by the mechanical control unit. The suction gun can therefore generate a suction flow to collect the yarn as required in the yarn gathering device. Such a plug-in connection can also be advantageously realized between the automatic actuating device and the suction gun.

Referring now to the accompanying drawings, a plurality of spinning stations of a melt spinning facility according to the present invention using one embodiment of an apparatus for operating a plurality of spinning stations of a melt spinning facility according to the present invention. will be described in detail.

1 schematically shows a front view of a plurality of spinning stations with one embodiment of the device for actuating the spinning stations according to the invention; FIG. 2 is a schematic side view of the spinning position shown in FIG. 1; FIG. 1 schematically shows a thread gathering device with a coupled suction gun; FIG. 1 is a schematic front view of several spinning positions in different operating positions of the device according to the invention; FIG. 1 shows a schematic side view of one of the spinning stations with a device according to the invention during threading; FIG. 1 shows a schematic side view of one of the spinning stations with a device according to the invention during threading; FIG.

1 and 2 show a melt spinning installation with a plurality of spinning stations in front and side views, in which an embodiment of the device according to the invention is integrated in the spinning stations. . Unless specific emphasis is made on one of the drawings, the following description refers to both drawings.

The melt spinning installation has a plurality of spinning stations 1.1 to 1.7, which are arranged next to each other in a row arrangement, and It forms a machine longitudinal side. The number of spinning positions shown in FIG. 1 is merely an example. Basically, such melt spinning equipment has a large number of such spinning stations.

The spinning stations shown in FIGS. 1 and 2 are constructed identically in their structure. In the example of spinning station 1.1, which is shown in side view in FIG. 2, the apparatus will be described in detail below.

Each of the spinning stations 1.1 to 1.7 has a spinning device 2 . The spinning device 2 comprises a spinning beam 2.2 which holds a plurality of spinning nozzles 2.1 on its underside. The spinning nozzle 2.1 is connected to a spinning pump 2.3, which is preferably designed as a multi-pump and has a separate melt for each spinning nozzle 2.1. generate logistics. The spinning pump 2.3 is connected via a melt feed line 2.4 to a melt source, not shown in detail here, for example an extruder.

Below the spinning device 2 a cooling device 3 is arranged, which in this embodiment is formed by a cooling duct 3.1 inside a blowing chamber 3.3. The cooling duct 3.1 is followed in the yarn running direction by a drop duct 3.2.

Below the drop duct 3.2 a collecting device 4 is provided, which has a plurality of nozzles 4 in order to combine the extruded filaments per spinning nozzle 2.1 into a single thread. It has a thread guide 4.1. In this embodiment, the spinning device produces four threads. The number of threads is an example. Such a spinning device 2 can thus produce up to 32 yarns per spinning station.

An oil supply device 5 for wetting the yarn group 8 is associated with the collection device 4 . A thread group 8 is drawn off by a godet unit 6 and supplied to a winding device 7 . In this embodiment the godet unit is formed by two driven godets 6.1.

The winding device 7 has a winding point 7.5 for each thread of the thread group 8. In FIG. These winding points 7.5 extend along a winding spindle 7.1 cantilevered on a winding turret 7.2. The winding turret 7.2 holds two winding spindles 7.1, which are guided alternately between the winding area and the exchange area.

Each winding point 7.5 is associated with a deflection roller 7.6 for distributing and sorting the yarn group 8, which deflection roller 7.6 is a godet unit. 6 is located immediately downstream. Each winding station 7.5 has a traversing unit 7.3 for winding and traversing the yarn into packages. The traversing unit 7.3 cooperates with a pressure roller 7.4, which is arranged parallel to the winding spindle 7.1 and which moves the package 14 during winding of the yarn. is in contact with the surface of

1 and 2 the spinning stations 1.1 to 1.7 are shown in their normal operating situation, in which each spinning station 1.1 to 1.7 consists of a plurality of yarns. Yarn group 8 is extruded and continuously wound onto package 14 .

A separate suction gun 10 is assigned to each spinning station 1.1 to 1.7 in order to be able to operate the spinning stations in the event of a process interruption or a new start. In the operating situation shown in FIGS. 1 and 2, the suction gun 10 is positioned in the operating position of the yarn gathering device 9 . Each of the spinning stations 1.1 to 1.7 has a separate yarn gathering device 9 which is constructed identically and has a respective yarn runway. is arranged upstream of the godet unit 6 at . To describe the thread gathering device 9, reference is now made to FIG.

FIG. 3 shows a schematic front view of the yarn gathering device 9 at the spinning station 1.1. The yarn gathering device 9 has a movable yarn guide 9.1 which is connected to a linear drive 9.2 and which is arranged in the yarn running plane of the yarn group 8. ing. On the side facing the thread group 8, the thread gathering device 9 has a holder 9.4 on which the suction gun 10 is held. The suction gun 10 is held in such a way that the suction nose 10.3 lies opposite the thread guide 9.1. The suction nose 10.3 of the suction gun 10 is associated with a cutting device 9.3 which is likewise held opposite the yarn guide 9.1. . The suction gun 10 is connected to a central waste channel 11 via a flexible waste line 10.1. The compressed air supply to the suction gun 10 is via a flexible compressed air line 10.2, which is connected to a compressed air source, not shown in detail here. . To control the suction gun 10, the holder 9.4 of the thread gathering device 9 has a plug-in connection 9.5. A connection to the machine control unit 13 is ensured via a plug-in connection 9.5.

As can be seen from the illustration in FIG. 1, the machine control unit 13 is connected to the respective yarn gathering device 9 at each of the spinning stations 1.1 to 1.7.

As can also be seen from FIG. 1, the central waste channel 11 extends along the spinning stations 1.1 to 1.7 and is connected to the lint bin 12. FIG. The suction guns 10 held in the yarn gathering device 9 are hereby connected together via a separate waste line 10.1 to a central waste channel 11. FIG.

In the operating situation shown in FIGS. 1 and 2, the thread gathering device 9 is inactive, so that the suction gun 10 held on the holder 9.1 is inactive. Only in the event of a fault, for example a yarn breakage in one of the winding stations, will the corresponding yarn gathering device 9 of the corresponding spinning station 1.1 to 1.7 be activated. For this purpose, FIG. 4 shows an embodiment of one of the spinning stations in which the yarn gathering device is activated. FIG. 4 shows two spinning stations 1.1, 1.2 in a front view in different operating situations.

At the spinning station 1.2 shown in FIG. 4, the yarn gathering device 9 is activated to collect the yarn group 8, since a fault has just occurred. In this operating situation the thread group 8 is guided by the thread guide 9.1 in the direction of the cutting device 9.3 and the suction gun 10. FIG. Since the suction gun 10 has previously been activated by the machine control unit 13, a suction flow is acting on the suction nose 10.3 of this suction gun 10. After being cut by the cutting device 9.3, the thread group 8 can thus be picked up by the suction nose 10.3 of the suction gun 10 and transported via the waste line 10.1 to the central waste channel 11. FIG.

In the operating state shown in the adjacent spinning station 1.1, the thread group 8 is desired to be applied to the winding point 7.5 of the godet unit 6 and the winding device 7 after the interruption of operation. In this situation the suction gun 10 has been removed from the holder 9.4 of the thread gathering device 9 and the thread group 8 can now be applied by an automatic actuator or by an operator.

FIG. 5.1 shows the spinning station 1.1 in a side view, in which the suction gun 10 is guided by an automatic actuator 15. FIG. The automatic actuating device 15 is height-adjustably held on a running frame 15.1 which can run parallel to the machine longitudinal side of the spinning stations 1.1 to 1.7. is. The automatic actuation device 15 has a cantilevered, articulated operating arm 15.2, to the end of which the suction gun 10 is connected. The operating arm 15.2 is now controlled by the control program in such a way that the suction gun 10 can apply the thread group 8 guided at the suction nose 10.3 to the godet unit 6 and the winding device 7. FIG. After the end of the rigging operation and the start of yarn winding, the suction gun 10 is guided back to the holder 9.4 of the yarn gathering device 9 by the operating arm 15.2 and positioned there.

The automated actuation of spinning station 1.1, shown in FIG. 5.1, can in principle also be carried out by an operator. In the situation shown in Figure 5.2, the suction gun 10 is being guided by the operator. At this time, the work process for setting the yarn group is substantially the same as the operation described above. The suction gun 10 is then guided by the operator in such a way that the thread can be applied and threaded through the device provided. At the end of the rigging operation, the suction gun 10 is guided back to the yarn gathering device 9 .

For actuating the suction gun, the suction gun can, for example, have an electric control valve, which can be actuated wirelessly, via a key or via a signal connection. be. Manual actuatability and automated actuatability of the suction gun can thus be realized both when the thread gathering device 9 is remote from the holder and when it is held on the holder.

Claims (10)

1. A method for operating a plurality of spinning stations of a melt spinning facility, wherein each one of a plurality of yarn groups is spun, drawn and wound into a package at said spinning station, said spinning station guiding said group of yarns by a suction gun to apply said group of yarns to a plurality of winding points of a spinning position of one of said yarn groups,
The suction gun is positioned at an operating position of the yarn gathering device by arranging the suction gun on a holder of the yarn gathering device after each yarn of the yarn group is set at the winding location, and the suction gun is A method comprising cooperating with a yarn guide and cutting device to gather yarns of said yarn group within said yarn gathering device. Each said spinning station has a separate suction gun, each said yarn gathering device has a separate holder for housing said suction gun, and said yarn groups are arranged in respective said spinning in position can be guided by the separate suction gun;
The method of claim 1. the suction gun is guided and actuated by an automatic actuator selectively supplied to the spinning station to plant the yarn;
3. The method of claim 2 . the suction gun is activated and deactivated independently of each other by a mechanical control unit in the operating position of the yarn gathering device;
4. A method according to claim 2 or 3 . guiding and actuating the suction gun by an operator to set the thread;
3. The method of claim 2 . A device for operating a plurality of spinning positions (1.1-1.7) of a melt spinning facility, comprising a spinning device (2) for each of said spinning positions (1.1-1.7), a godet unit (6), a winding device (7) and at least one suction gun ( 10) in an apparatus comprising
Said suction gun (10) is positionable on a holder (9.4) of one of a plurality of yarn gathering devices (9) after said yarn rigging, and said suction gun (10 ) cooperates in said thread gathering device (9) with at least one thread guide (9.1) and a cutting device (9.3) for collecting said threads of said thread group . A plurality of said suction guns (10) for setting said yarn are arranged correspondingly to said spinning positions (1.1-1.7), and said suction guns (10) are arranged to correspond to said yarn gathering device (9 ) can be positioned on a plurality of said holders (9.4) of
7. Apparatus according to claim 6. The suction guns (10) are connected at the spinning stations (1.1 to 1.7) via a flexible waste line (10.1) in each case to a central waste channel (11). ,
8. Apparatus according to claim 7. Said suction gun (10) is operable for rigging by an automatic actuator (15) or by an operator, said automatic actuator (15) selectively moving said spinning position (1.1-1. 7) is transferable to the spinning position of one of
Apparatus according to any one of claims 6 to 8. Said holder (9.4) of one of said yarn gathering devices (9) comprises a bayonet connection (9.4) for connecting said suction gun (10) to a machine control unit (13). 5) has
Apparatus according to any one of claims 6 to 9.

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