EP3645772A1

EP3645772A1 - Melt-spinning apparatus

Info

Publication number: EP3645772A1
Application number: EP18731072.7A
Authority: EP
Inventors: Rainald Voss; Stefan Faulstich; Marc-André HERRNDORF; Abdelati HAMID
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2017-06-29
Filing date: 2018-06-12
Publication date: 2020-05-06
Also published as: CN111148863A; WO2019001948A1; DE102017006137A1; JP7143348B2; CN111148863B; JP2020525664A

Abstract

The invention relates to a melt-spinning apparatus for producing synthetic threads, having a large number of spinning positions. Each of the spinning positions has a spinneret device, a cooling device, a godet device and a winding device. An automatic operator is provided to insert the threads in the spinning positions, said operator being able to be moved to each of the spinning positions in order to insert the threads. The automatic operator is guided by a guide device above an operating path and comprises at least one collision sensor for detecting an obstacle. In order to be able to perform all operating processes whilst in one spinning position and with a high degree of safety, the automatic operator comprises a sensor column for receiving the collision sensor and which protrudes into the operating path at a distance from the floor of the hall.

Description

Melt spinning apparatus

The invention relates to a melt spinning device for the production of synthetic threads according to the preamble of claim 1.

Synthetic filaments are made by melt spinning apparatus having a plurality of spinning positions. The spinning positions are placed side by side to a machine longitudinal front in a machine hall. Each of the spinning positions has a spinnerette device with multiple spinnerets for extruding multiple threads. The filaments of a spinning position are withdrawn together as a bundle of threads from the spinnerets and, at the end of the process, wound up in several winding positions of a take-up device parallel to spools. The winding devices of the spinning positions are each equipped with two winding spindles held on a winding turret so that the threads can be continuously produced in the spinning positions. Only at the beginning of a process or during a process interruption is it necessary that the yarn sheet of the spinning position is guided by auxiliary devices and applied, for example, to the godet device and the winding device. Such auxiliary devices are preferably formed by automatic operating devices, which are movably guided along the machine longitudinal front and optionally one of the spinning positions for applying the threads can be fed. Such a melt spinning device is disclosed, for example, in EP 3 162 748 A1.

In the known melt spinning device, the operating machine is designed to be movable and guided on a monorail above an operating passage. The creation of a group of threads on a godet device and a winding device is carried out by a robot arm of the control panel. To avoid unwanted collisions between the automatic operator and a Spulenabräumeinrichtung or an operator, the control panel on several collision sensors, which detect possible obstacles and thus avoid a collision.

In the known melt spinning device, the collision sensors are arranged at a height above 2,000 mm. In that regard, highly sensitive collision sensors are needed to avoid, for example, a collision between the robot arm and an operator in the operating gear. In view of the highly volatile environment in a melt-spinning apparatus, there are great problems in ensuring such optical sensor sensitivities over a longer period of operation.

It is an object of the invention to provide a melt spinning device for the production of synthetic threads of the generic type, in which an automatic machine for applying threads with high security can be operated automatically.

This object is achieved in that the control panel for receiving the collision sensor has a sensor column and that the sensor column protrudes with a short distance to a hall floor in the service aisle.

Advantageous developments of the invention are defined by the features and feature combinations of the subclaims. The invention has the particular advantage that the environment of the operator's machine is observed directly in the area in which possibly operator or a Spulabräumeinrichtung resides. Thus, to clear the full bobbins, mobile doffers are preferably used, which are guided along the operating gear. In addition, the operation course is used by the operators who, for example, replace individual take-up devices of the spinning positions for maintenance. Ground level monitoring of the immediate vicinity of the control panel in the area of the operation avoids any collision with an obstacle. The individual application processes in the spinning positions after process interruptions or a restart can therefore be carried out with a high degree of safety by the operating machine.

For receiving the collision sensor, the sensor column preferably has a detection head at a free lower end, so that the monitoring area assumes relatively small spatial dimensions. Here, the collision sensor is preferably formed by a laser scanner, which allows a two-dimensional environment detection with a coverage of up to 360 ° by rotation of a transmitter-receiver system.

However, two laser scanners distributed on a circumferential line of the detection head are preferably held, each having a monitoring range of 270 °. This ensures that the entire environment of the control panel is detected in the area of the operating aisle.

Particularly in the case of movable obstacles such as an operator, the development of the melt spinning device according to the invention is preferably carried out, in which the collision sensor is associated with an inner near field and an outer near field, wherein a signaling of the Obstacle in the inner near field or in the outer near field in a machine control triggers different control commands. For example, one operation of the control panel is aborted only when an obstacle in the inner near field is detected. Where, in the case of an obstacle in the outer near field, a slowed down working speed of the operating machine is initially carried out. As a result, abrupt interruptions of the operating machine can be avoided when moving obstacles. In order to enable manual intervention in the control of the operator terminal despite automation, there is also the possibility of arranging a control panel and / or a switching element, for example an emergency stop switch on the sensor column, the control panel or the switching element directly to the machine control connected is. Thus, the control panel and / or the switching element can be mounted at working height of an operator.

In order to be able to carry out the respective work sequences for the application of the threads by the automatic operating machine in the individual spinning positions, this is in each case positioned in the predetermined spinning position. Here, the fixation and positioning of the control panel can be further improved by the sensor column has a movable tension support at the free end, which selectively braces the sensor column with the hall floor. Thus, for each spinning position an additional fixation can be achieved via the sensor column.

In addition, however, it is also possible to stabilize the leadership of the control panel by the sensor column has a guide shoe at the free end, which is feasible in a floor rail in the hall floor. In particular for positioning and adjustment the automatic control is a possible low-tolerance management advantage.

To apply a group of yarns in one of the spinning positions, it is necessary that the group of threads be picked up by the operating machine for a short time and removed to a Garnabfallbehälter. In order to operate the auxiliary equipment required for this purpose on the automatic operating device, the development of the invention is particularly advantageous, in which each of the spinning positions is assigned one of a plurality of connection stations each having a compressed air connection for the transmission of compressed air, which interact with a connection adapter arranged on the operating machine. Thus, the control panel can be advantageous in each of the spinning positions automatically connect to a compressed air supply.

In order for the control unit to reach each of the spinning positions as quickly as possible, the guiding device is formed by a monorail, on which it is movably held by an automatic conveyor. Due to the advantageous development of the melt spinning apparatus, in which the automatic control unit has a controllable robot arm, which is arranged together with the sensor column on a carrier held on the monorail, the application and threading of the threads on the godets of the godet device and the winding stations of the Aufwi- Execute ckeleinrichtung with high flexibility. Due to the free mobility of the robot arm very high degrees of freedom to guide the yarn sheet when creating achieved.

The thread group is preferably guided by a movable suction injector, which is guided by the robot arm to create a thread. in the godet device and the winding device one of the spinning positions can be guided. The drawn in on the Sauginjektor yarn sheet can be added directly to a reservoir of the control panel or fed directly via a waste line a central Garnabfallbehälter.

The melt spinning device according to the invention is particularly suitable for carrying out a fully automated production of synthetic threads with high reliability. The operational burden on an operator is significantly reduced and essentially determined by control functions that the operator can perform without risk of collision.

The melt spinning device according to the invention will be explained in more detail below with reference to an embodiment with reference to the accompanying figures.

They show:

1 shows schematically a front view of a plurality of spinning positions of the melt spinning device according to the invention

FIG. 2 schematically shows a front view of an automatic operating device of the melt spinning device according to the invention according to FIG. 1. FIG

FIG. 3 schematically shows a side view of one of the spinning positions of the melt spinning device according to the invention according to FIG. 1. FIG

4 schematically shows a side view of the automatic operating device of the melt spinning device according to the invention from FIG. 1

Fig. 5 shows schematically a side view of one of the spinning positions when creating the threads 6 schematically shows a side view of a further embodiment of the melt spinning apparatus according to the invention when the threads are laid in one of the spinning positions

7 schematically shows a further embodiment of the inventive melt spinning apparatus when the threads are applied in one of the spinning positions

1 and 3, an embodiment of the melt spinning apparatus according to the invention with a plurality of spinning positions in a front-facing and is shown in a side view. The following description applies to both figures, insofar as no explicit reference is made to one of the figures.

The embodiment of the melt spinning device according to the invention has a plurality of spinning positions 1.1 to 1.6, which are arranged side by side in a row-shaped arrangement and form a machine longitudinal side. The number of spinning positions shown in Fig. 1 is only an example. In principle, such melt spinning apparatuses contain a multiplicity of identical spinning positions.

The spinning positions 1.1 to 1.6 shown in FIGS. 1 and 3 are identical in their construction. Using the example of the spinning position 1.1 shown in a side view in FIG. 3, the devices are described in more detail below.

Each of the spinning positions 1.1 to 1.6 has a spinneret device 2. The spinneret device 2 comprises a spinneret 2.2, which carries a plurality of spinnerets 2.1 on its underside. The spinnerets 2.1 are coupled to a spinning pump 2.3, which is preferably designed as a multiple pump and for each spinneret 2.1 a separate melt stream generated. The spinning pump 2.3 is connected via a melt feed 2.4 with a melt source not shown here, for example an extruder. Below the spinneret device 2, a cooling device 3 is arranged, which in this embodiment has a cooling shaft 3.1 with gas-permeable wall within a blast chamber 3.3. For each of the spinnerets 2.1, a cooling shaft 3.1 is provided for receiving and cooling the filaments. The cooling shaft 3.1 is followed by a chute 3.2 in each case in the thread running direction.

Below the chute 3.2, a collecting device 4 is arranged, which has a plurality of yarn guides 4.1, to merge the filaments extruded per spinneret 2.1 into a yarn. In this exemplary embodiment, the spinneret device 2 generates four threads. The number of threads is exemplary. Thus, such spinneret devices 2 can produce up to 32 threads per spinning position 1.1 to 1.6 simultaneously.

The collecting device 4 is assigned a preparation device 5, by which the individual threads of a yarn sheet 8 are wetted. The threads are withdrawn as a yarn sheet 8 by a godet 6 and fed to a take-up device 7. In this exemplary embodiment, the godet device 6 is formed by two driven godets 6.1. Between the godets 6.1 a Verwirbelungseinrich- device 6.2 is arranged to swirl the threads of the yarn sheet 8 separately.

The winding device 7 has per thread of the yarn sheet 8 each have a winding point 7.5. The total of four winding stations 7.5 extend along a winding spindle 7.1, which is held projectingly on a winding turret 7.2. The winding turret 7.2 carries two winding spindles 7.1, which selnd be guided in a winding area and a change area. Each of the winding stations 7.5 is assigned to the division and separation of the yarn sheet 8 each one of several Umlenkröllchen 7.6, which are the godet 6 immediately downstream. For winding and laying the threads to coils, each of the winding points 7.5 on a traversing unit 7.3. The traversing units 7.3 interact with a pressure roller 7.4, which is arranged parallel to the winding spindles 7.1 and abuts several coils 22 on the winding of the threads on the surface. In Figs. 1 and 3, the spinning positions 1.1 to 1.6 are shown in their normal operating situation in which in each spinning position 1.1 to 1.6 extruded from a plurality of threads yarn sheet 8 extruded, withdrawn and wound continuously to coil 22. The coils 22 which are finally wound in the take-up devices 7 are preferably automatically picked up by doffing devices and removed. Such mobile Doffemrichtungen move within an operating gear 21, which extends parallel to the machine longitudinal side of the spinning positions 1.1 to 1.6. The Doffemrichtungen used for clearing are well known and therefore not shown here and not described.

In order to operate the spinning positions 1.1 to 1.6 at a process start or a process interruption, the spinning positions 1.1 to 1.6 an automatic control 9 is assigned. In Figs. 1 and 3, the control panel 9 is shown in a waiting position. The control unit 9 is held on a guide device 10 above the operating gear 21. The guide device 10 is formed in this embodiment by a monorail 10.1, which are parallel to the machine longitudinal sides of the spinning positions 1.1 to 1.6 above the operating gear 21 extends. So that the control machine 9 each of the spinning positions

1.1 to 1.6 can be fed.

For explanation of the operating machine 9, reference is made in addition to FIGS. 2 and 4 below. In Fig. 2 is a front view of the operating machine, as shown in the spinning device according to FIG. 1, shown enlarged and in Fig. 4 shows a side view of the operating machine as shown in Fig. 3, also shown enlarged. Insofar as no explicit reference is made to one of the figures, the following description applies to all figures.

The control panel 9 has a support frame 9.1, which is held on the overhead conveyor 10.1. The support frame 9.1 is connected to a chassis 9.5, which is guided in the overhead track 10.1. The chassis 9.5 is assigned a conveyor 9.4, through which the control panel 9 in the overhead conveyor 10.1 is movable. The overhead conveyor 10.1 has for this purpose two guide rails 10.2 and 10.3. The funding 9.4 is for this purpose coupled with a machine control 9.6. The automatic control 9.6 shown schematically on an upper side of the support frame 9.1 is connected to a machine control not shown here.

At the opposite end of the support frame 9.1 is a sensor column

9.2 held, which projects with a short distance to a hall floor 20 of the control gear 21. In the lower region of the sensor column 9.2, a detection head 1 1 for receiving a collision sensor 1 1.1 is formed. The detection head 1 1 is designed in this embodiment with a round cross section, wherein the collision sensor 1 1.1 is formed by two arranged on a circumferential line arranged laser scanner 1 1.2 and 1.3 1.3. The sensor column 9.2 is attached to the support 9.1 and is thus guided back and forth within the operating gear 21 depending on the position of the control panel.

The laser scanners 1 1.2 and 1.3 at the free end of the sensor column 9.2 are connected to the machine control 9.6. Each of the laser scanners 1 1.1 and 1 1.2 has a monitoring range of at least 200 °, preferably at least 250 °, so that the entire environment around the sensor column 9.2 is monitored. In this case, the environment is detected in two dimensions by a preferably continuous laser signal. Thus, obstacles such as, for example, an operator or a doffing device can be detected early in the operating gear 21 and correspondingly taken into account in the control of the automatic operating device 9. Particularly advantageous here is the subdivision between an inner near field and an outer near field, around the detection head 11. Thus, the obstacles occurring in the area of the outer near field and the obstacles occurring in the inner near field can each be used to different control commands of the control panel 9. When moving obstacles that approach the control panel 9, so for example abrupt braking of the operations of the control panel 9 can be avoided. Thus, it would be possible to slow down the operating speed of the control automaton when recognizing an obstacle in the outer near field. At the same time, a warning signal could be generated to indicate to an operator the imminent collision. Only when the obstacle enters the inner near field causes an interruption of the work process of the operating machine 9. Thus, all accumulate within a spinning position works such as clearing bobbins, create thread, spinneret maintenance and replacement of rewinding without danger of possible collision safely executed , It is particularly advantageous that the sensors in a is arranged rich spinning position, in which the environmental load by volatile components of the thread guide is the lowest.

In addition to the sensor column 9.2, a robot arm 9.3 is held on the support frame 9.1. The robot arm 9.3 has a freely projecting leading end on which a suction injector 9.8 is guided. The projecting multi-unit robot arm 9.3 is freely movable by actuators and sensors not shown here, wherein the movement of the robot arm 9.3 is controlled by the machine control 9.6. The power supply of the operating machine 9 is preferably carried out by a busbar or an energy chain.

To operate the suction injector 9.8, the automatic control unit 9 in each of the spinning positions 1.1 to 1.6 interacts with a connection station 12. 4, the connection station 12 of the spinning position 1.1 is shown. To explain the connection station 12, reference is additionally made to FIG. 5, in which a state is shown in which the automatic operation device 9 is connected to the connection station 12 via a connection adapter 12.3.

As is apparent from FIGS. 4 and 5, the connection adapter 12.3 is arranged on the support frame 9.1 of the control unit 9. The connection adapter 12.3 is coupled to an actuator 12.4, which leads the connection adapter 12.3 for coupling to one of the connection stations 12. FIG. 4 illustrates the situation in which the automatic control unit 9 is held in the waiting position and thus there is no connection to one of the connection stations 12.

FIG. 5 shows the situation in which the connection adapter 12.3 is coupled to the connection station 12. For this purpose, the connection Station 12 a Dmckluftanschluss 12.1, which is connected via a central compressed air line 15 with a central compressed air source, not shown here. The connection adapter 12.3 is verkuppelt with the connection station 12 such that a arranged on the control panel compressed air line 13 is connected to the Dmckluftanschluss 12.1, for example by a plug-in coupling. The Dmckluftleitung 13 is coupled to the suction injector 9.2, so that it is ready to receive a group of threads. A connected to the suction injector 9.2 waste line 14 opens into a waste container 9.7, which is formed on the support frame 9.1. The yarn group received via the suction injector 9.2 during a docking procedure is thus received in the waste container 9.7 of the operating machine 9.

In principle, however, it is also possible to extend the connection station 12 such that the waste line 14 is connected via a waste connection to a central waste line. As can be seen from the illustration in FIG. 1, each of the spinning positions 1.1 to 1.6 in each case has one of a plurality of connection stations 12. Thus, there is the possibility that the automatic control unit 9 automatically connects in each of the spinning positions 1.1 to 1.6 via the connection adapter 12.3 with one of the connection stations 12.

In the event that in one of the spinning positions 1.1 to 1.6 an operation for applying the threads is required, the automatic control unit 9 can lead from the waiting position to a holding position of the respective spinning position. For this purpose, the automaton control 9.6 of the operating automaton 9 receives corresponding control commands. After a position with the help of The sensors 12.4 are activated here so that the connection adapter 12.3 is coupled to the respective connection station 12 of the relevant spinning position. Now the control panel 9 is ready to take over the yarn sheet 8 in the spinning position.

5, the situation is shown in which the yarn sheet 8 is guided in the spinning position 1.1 through the control panel 9. The yarn sheet 8 is received via the suction injector 9.2 and discharged via the waste line 14 to the waste container 9.7. The suction injector 9.8 is guided by the robot arm 9.3 for applying and threading the threads of the yarn sheet in the godet 6 and the winding device 7. During this time, the environment is monitored to the control panel by projecting in the operating passage sensor column 9.2. For this purpose, the environment is scanned by the laser scanner 1 1.2 and 1.3 1.3 on the detection head 1 1. As soon as an obstacle occurs in the operating gear 21, corresponding changes are made to the operating machine 9.

The embodiment of the collision sensor 1 1.1 by a plurality of laser scanners is exemplary. In principle, alternative sensor systems such as infrared distance sensors, laser distance sensors or 3D Karmerasysteme are possible to avoid a collision.

6, another embodiment of the melt spinning device according to the invention is shown schematically a side view when using the control panel 9. The embodiment is substantially identical to the aforementioned embodiment of FIGS. 1 and 3, so that at this point only the differences will be explained and otherwise reference is made to the above description. In the embodiment shown in Fig. 6, a tension support 17 is formed at the free end of the sensor column 9.2 of the control panel 9. The clamping support 17 has a movable punch 17.1 and a clamping actuator 17.2. The stamp 17. 1 is arranged at the end of the sensor column 9. 2 and can be extended by the clamping actuator 17. 2 and clamped against the hall floor 20. Thus, it is possible to additionally fix the operating machine 9 through the sensor column 9.2 in the spinning position 1.1. The sensor column 9.2 is braced by the tension support 17 between the support frame 9.1 and the hall floor 20.

At operating height of an operator, the sensor column 9. 2 has an operating panel 16. The control panel 16 is connected to the machine control 9.6 of the control panel 9. The control panel 16 includes one or more control buttons so that an operator can intervene in the sequence of operation of the control panel.

Alternatively, it is also possible to install only an emergency stop switch on the sensor column 9.2. The emergency stop switch, which is connected to the automatic control system 9.6, would thus only be operated in the case of pending trial learning, for example if the threads from the suction injector were lost.

FIG. 7 shows a further alternative embodiment of the melt spinning device according to the invention, which likewise differs only in the design of the sensor column 9.2 of the automatic control device 9. In the embodiment shown in Fig. 7, the sensor column 9.2 of the control panel 9 at the free end of a guide shoe 18. The guide shoe 18 is formed below the Detektierkopfes 1 1 and projects into a recessed in the hall floor 20 bottom rail 19 in. The bottom rail 19 extends parallel to the overhead conveyor 10, so that the control panel 9 an additional guide on the sensor column 9.2 receives. This makes possible the most exact positioning and adjustments of the control automaton within a spinning position.

The embodiment shown in Fig. 7 is otherwise identical to the aforementioned embodiments, so that no further explanation takes place at this point.

The embodiment of the melt spinning device according to the invention shown in the aforementioned figures is exemplary in the design of the operating machine 9 and in the formation of the devices of the melt spinning device. Thus, additional facilities may be needed to treat the threads within the spinning positions. Likewise, the godet device can have a plurality of godets for drawing the threads.

Claims

claims

Melt spinning device for producing synthetic threads with a plurality of spinning positions (1.1 - 1.6), each having a spinneret device (2), a cooling device (3), a godet device (6) and a take-up device (7), and with an automatic operating device (9) which is guided by a guide device (10) above an operating passage (21) parallel to the arranged in a row spinning positions (1.1 - 1.6) and each of the spinning positions (1.1 - 1.6) can be fed to apply the threads, said Automatic control unit (9) has at least one collision sensor (1 1.1) for detecting an obstacle, characterized in that the control panel (9) for receiving the collision sensor (1 1.1) has a sensor column (9.2) and that the sensor column (9.2) with a short Distance from an indoor floor (20) in the operating passage (21) protrudes.

Melt spinning device according to claim 1, characterized in that, the sensor column (9.2) has at a free lower end a Detek- animal head (1 1) for receiving the collision sensor (1 1.1) and that the collision sensor (1 1.1) by a laser scanner (1 1.2) is formed.

Melt spinning device according to claim 2, characterized in that on the detection head (1 1) two distributed on a circumferential line arranged laser scanner (1 1.

2, 1 1.

3), each having a monitoring range of at least 200 °.

4. Melt spinning device according to one of claims 1 to 3, characterized in that the collision sensor (1 1.1) is connected to the sensor column (9.2) with a machine control (9.6) that the collision sensor (1 1.1) an inner near field and an outer near field is assigned and that a signaling of the obstacle inside

Near field or in the outer near field in the machine control (9.6) triggers different control commands.

5. melt spinning apparatus according to claim 4, characterized in that the sensor column (9.2) a control panel (16) and / or a

Carries switching element, which is connected to the machine control (9.6).

6. melt spinning apparatus according to one of claims 1 to 5, characterized in that the sensor column (9.2) at the free end a movable clamping support (17) which selectively clamped the sensor column (9.2) with the hall floor (20).

7. Melt spinning device according to one of claims 1 to 6, characterized in that the sensor column (9.2) at the free end a guide shoe (18) which in a floor rail (19) in the hall floor (20) can be guided.

8. melt spinning device according to one of claims 1 to 7, characterized in that each of the spinning positions (1.1 - 1.6) one of a plurality of connection stations (12) each with a Druckluftan- circuit (12.1) is assigned to the compressed air transmission, which with a on the automatic control ( 9) arranged connection adapter (12.3) cooperate.

9. melt spinning apparatus according to one of claims 1 to 6, characterized in that the guide device (10) by a monorail (10.1) is formed, on which the automatic operation (9) is guided, and that the control panel (9) a conveyor (9.4 ), through which the control panel (9) on the monorail

(10.1) is mobile.

10. Melt spinning device according to one of claims 1 to 9, characterized in that the control unit (9) has a controllable robotic arm (9.3) which, together with the sensor column (9.2), is held on a support frame (9.1 ) is arranged.

1 1. A melt spinning apparatus according to claim 10, characterized in that the control panel (9) has a movable suction injector (9.8), which by the robot arm (9.3) for applying a group of yarns in the godet device (6) and the take-up device (7) one of Spinning positions (1.1 - 1.6) is feasible.