CN113994033B

CN113994033B - Melt spinning apparatus

Info

Publication number: CN113994033B
Application number: CN202080043962.9A
Authority: CN
Inventors: B·马梅罗
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2019-06-19
Filing date: 2020-06-05
Publication date: 2023-12-19
Anticipated expiration: 2040-06-05
Also published as: CN113994033A; WO2020254124A1; DE102019004354A1

Abstract

The invention relates to a melt spinning apparatus for producing synthetic threads, said apparatus having a plurality of spinning positions. Each spinning position has a spinning device, a godet device and a winding device. The automatic handling device is provided for yarn joining in spinning positions, which can be moved on a guide device to spinning positions aligned for yarn joining, wherein each spinning position is assigned a connection station for compressed air delivery. The connecting station is selectively engageable to a clutch device movable on the automatic operating device. In order to achieve a quick and safe engagement, the connection station is arranged stationary in the movement path of the robot so that the clutch device can be engaged to one of said connection stations due to the transitional movement of the robot.

Description

Melt spinning apparatus

Technical Field

The invention relates to a melt spinning apparatus for producing synthetic threads.

Background

Melt spinning apparatuses of this type for producing synthetic threads are disclosed, for example, in DE102017003189 A1.

The melt spinning apparatus is provided with a plurality of spinning positions, at each of which a yarn set is extruded from a polymer melt, cooled, oriented and wound to form a bobbin. In this connection, each spinning position has a spinning device, a godet device and a winding device. The yarn package in the spinning position is drawn from the spinning device by a godet device after extrusion and cooling and sent to a winding device. In order to be able to splice the thread groups on the godet of the godet device and in the winding position of the winding device at the beginning of the process in the spinning position or after interruption of the process, the known melt spinning apparatus has an automatic operating device which guides the suction jet by means of a robot arm. The wire set can be received by means of a suction jet and guided by a robotic arm for the purpose of splicing. In order to allow automatic guidance of the yarn groups in this way, each spinning position has a connection station which interacts with a clutch device of the automatic operating device for transporting the compressed holes and discharging the waste yarn. Here, the automatic operating device is required to approach a predetermined stop position assigned to the spinning position in each spinning position. The known melt spinning apparatus thus has a locking device for securing the automatic operating device in each spinning position. Once the automatic operating device has been fixed, the clutch devices are engaged to the respective connection stations. In this connection, the connection station is arranged laterally adjacent to the guide device on which the automation device is guided.

In the known melt spinning apparatus, the stop position of the robot must be exactly approximated to allow a perfect connection between the connection station and the clutch device.

Disclosure of Invention

The object of the present invention is now to improve a melt spinning apparatus for producing synthetic threads of this type so that a desired rapid and precise engagement between the connecting station and the clutch device becomes possible.

According to the invention, this object is achieved in that the connection stations are arranged stationary in the movement path of the automation device, so that the clutch device can be engaged to one of said connection stations as a result of the movement of the automation device.

The invention has the special advantage that the movement of the robot and thus the drive of the robot can be used to establish the connection between the connection station and the clutch device. In this connection, the access to the spinning position and the engagement between the connecting station and the clutch device can take place simultaneously by means of the automatic operating device. The stop position of the automatic operation device is predetermined by the connection station. The additional means for connecting the connecting station to the clutch device can be dispensed with.

In order that the displacement movement of the actuating device is not hindered by the connecting station, the invention is particularly advantageous in that the clutch device is designed to be adjustable in the transverse direction of the movement path of the actuating device between a displacement position in which it can be guided freely together with the actuating device and an engagement position. The mobility of the automatic operating device is thus ensured, although the connection station is arranged in this movement path.

A feature of the development of the invention in which the connection station and the clutch device are arranged in an engagement plane parallel to the movement path of the automation device is that the movement of the automation device can be used directly for horizontally engaging the connection station to the clutch device.

The connection between the connection station and the coupling device can then be further promoted in that, in an advantageous development, the connection station has in each case one plug connection, and the coupling device has a plug adapter which is opposite the plug connection.

The undesired collision in the engagement plane can be avoided in a simple manner in that the clutch device is held on a movable carriage, which is guided in the engagement plane by a carriage drive. The carriage is thus positioned together with the clutch device in the respective desired position by means of the carriage drive device in a freely movable or engageable manner. Thus, a reliable guiding mechanism saving a lot of space can be obtained.

In order to be able to carry out the delivery of the wound bobbins independently of the respective position of the automation device, it is also provided that the guide device is formed by a suspension rail on which the automation device is guided and that the connecting station is arranged between the guide rails of the suspension rail.

In order to be able to carry out a desired gentle engagement between the coupling station and the clutch device, the following development of the invention is preferably achieved in that the drive device of the automatic operating device has a controllable drive motor, whereby a slower creep speed of the automatic operating device can be adjusted at least in addition to the displacement speed. The engagement movement in the form of a shock (shock) can then advantageously be avoided.

In addition, the following improvements of the invention have proved successful when the spinning stations are arranged next to one another to form a plurality of long machine sides, wherein the automatic operating device has a joint robot and a supply unit with a waste thread container, wherein the supply unit is connected to the clutch device for the transmission of compressed air. The waste filaments can then be stored directly on the automatic operating device. Thus, the discharge of waste filaments through the connection station and the discharge of air streams by means of long ducts associated with the waste filaments can be advantageously avoided.

A suction ejector connected to the supply unit by means of a compressed air line and a waste line is provided for treating the yarn set in order to splice the latter. This results in a short distance for guiding the waste thread to the waste thread container.

The flexibility for guiding the suction jet is ensured by a controllable robotic arm of the splicing robot, which generally has a plurality of degrees of freedom and precisely guides the suction jet to splice the filaments according to a predetermined control program.

The melt spinning apparatus according to the invention is particularly suitable for performing fully automatic production of synthetic threads. The operational complexity of the operator is significantly reduced and essentially consists of only supervisory functions and maintenance work.

Drawings

The melt spinning apparatus according to the present invention will be explained in more detail below by way of examples and with reference to the accompanying drawings, in which:

FIG. 1 schematically illustrates a front view of a plurality of spinning positions and an automatic handling device of a melt spinning apparatus of the present invention;

fig. 2.1 and 2.2 show plan views of the automatic operating device of fig. 1 in a plurality of operating conditions; and

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

Detailed Description

Embodiments of melt spinning apparatus according to the present invention have a plurality of spinning positions shown in front and side views of fig. 1 and 3. The following description applies to both figures unless one of them is specifically mentioned.

An embodiment of the melt spinning apparatus according to the invention has a plurality of spinning positions 1.1-1.3 which are arranged in rows parallel to each other, forming the machine longitudinal side. The number of spinning positions shown in fig. 1 is merely exemplary. In principle, such melt spinning apparatuses comprise a plurality of spinning positions of the same type.

The spinning positions 1.1-1.3 as shown in fig. 1 have the same embodiment in terms of their structure and will be explained in more detail at the spinning position 1.1 as shown in fig. 3.

As can be seen from the illustration in fig. 3, each spinning point 1.1 to 1.3, in this case spinning point 1.1, has a spinning device 2. The spinning device 2 comprises a spinning beam 2.2 which supports a plurality of spinning nozzles 2.1 on the underside. The spinning nozzles 2.1 are coupled to spinning pumps 2.3, which are preferably designed as multiple pumps and are connected to each spinning nozzle 2.1. The spinning pump 2.3 is connected to an extruder or other melt source (not shown here) by a supply melt 2.4.

A cooling line 2.5 connected to the blower chamber 2.6 by means of a gas-permeable wall is connected to the spinning beam below the spinning beam 2.2. The cooling duct 2.5 is embodied cylindrically and is arranged concentrically to the spinning nozzle 2.1. The filaments extruded through the spinning nozzle 2.1 can then be cooled in the cooling duct 2.5 by means of the temperature-and humidity-regulating air supplied from the blowing chamber 2.6.

A collecting guide 3 combining a number of filaments to form a yarn is arranged below the cooling duct 2.5. In this embodiment, the spinning device 2 produces a total of four filaments at each spinning position. The number of filaments produced at each spinning position is exemplary. Such a spinning device can produce up to 32 filaments simultaneously at each spinning position.

The filaments produced as filament groups 7 in the spinning position are drawn from the spinning device 2 by means of a godet device 5. The threads of the thread group 7 here move through the spin-coating device 4 to wet the threads. In this embodiment, the godet unit 5 is provided by two driven godets 5.1. A yarn entanglement unit 5.2 for entangling the yarn of the yarn groups 7, respectively, is arranged between the godets 5.1.

The filaments of the filament bundle 7 are wound at the end of the process to form a bobbin. For this purpose, a winding device 6 is provided, which has one winding position 6.4 for each thread of the thread group 7. A total of four winding positions 6.4 extend along the winding spindle 6.1, which are held in a protruding manner on the winding turret 6.2. The winding turret 6.2 supports two winding spindles 6.1 which are guided in an alternating manner in a winding region and a change region. Each winding position 6.4 is assigned one of a plurality of deflection rolls 6.6 for dividing and separating the yarn groups 7, which are arranged immediately downstream of the godet arrangement 5. Each winding position 6.4 for winding and displacing the thread to form a bobbin has a traversing unit 6.3. The traversing unit 6.3 interacts with a contact pressure roller 6.5, which is arranged parallel to the winding spindle 6.1 and rotatably mounted on the frame. The contact pressure roller 6.5 is supported on the surface of the bobbin 23, at which time the thread is being wound to form the bobbin.

In fig. 1 and 3, the spinning positions 1.1 to 1.3 are in their normal operation, in which a yarn package 7 consisting of a plurality of yarns is extruded, drawn off and wound continuously on each spinning position 1.1 to 1.3 to form a bobbin 23.

In order to be able to operate the spinning positions 1.1 to 1.3 at the beginning of the process or at the interruption of the process, the spinning positions 1.1 to 1.3 are assigned an automatic operating device 8. In fig. 1 and 3, the automatic operating device 8 is shown in a waiting position. The automatic operating device 8 is guided in a guide 17 parallel to the longitudinal sides of the machine. The guide 17 is in this embodiment designed as a suspension rail 17.1, which in this embodiment has two guide rails 17.2. The guide rail 17.2 extends above the operator corridor parallel to the machine longitudinal sides of the spinning positions 1.1-1.3. The automation device 8 has a drive device 8.1, by means of which the automation device is repositioned along the guide rail 17.2. For this purpose, the drive device 8.1 has a controllable drive motor 8.2. The drive motor 8.2 is connected to the robot controller 21. The robot controller 21 is connected to a machine controller 22 (shown in fig. 1).

The automatic operating device 8 has in this embodiment a joint robot 8.4 and a supply unit 8.3, both of which are held on the underside of the drive device 8.1. The supply unit 8.3 is equipped with a scrap container 9. The waste thread unit 9 has an adjustable waste flap 9.1 on the underside, which can be opened in order to empty the waste thread container 9.

The joint robot 8.4 of the automatic operation device 8 has a controllable arm 10. The robot arm 10 has a suction jet 11 and a cutting device 24 at the free projecting leading end. The projecting articulated robot arm 10 is freely movable by means of actuators and sensors as shown here more closely, wherein the sequence of movements of the robot arm 10 is controlled by a robot controller 21. The power supply to the automation device 8 is preferably carried out via a bus or via an energy chain.

For operating the suction jet 11, the automatic operating device 8 has a clutch device 8.5, which is connected to the supply unit 8.3 by means of a supply line 25. The clutch device 8.5 is arranged on the upper side of the automatic operating device 8. The clutch device 8.5 may be engaged to a plurality of connection stations 14.1-14.3. The connection stations 14.1 to 14.3 are assigned to spinning positions 1.1 to 1.3, as is evident from the illustration in fig. 1. At each connection station 14.1-14.3 a compressed air connection is provided which is supplied by means of a central compressed air line 18.

The automatic operating device 8 is held in the waiting position in fig. 1 and 3, in which no compressed air is supplied. The engagement action between the clutch device 8.5 and one of the connection stations 14.1, 14.3 is explained below with reference to fig. 2.1 and 2.2.

The upper side of the automatic operating device 8 is shown schematically in fig. 2.1 and 2.2 in various operating states. In this regard, the following description applies to both figures unless either figure is specifically mentioned.

Fig. 2.1 shows the situation of the automatic operating device 8 with its movement along the movement track defined by the guide rail 17.2 of the suspension rail 17.1. The movement path of the automatic operating device is also indicated by an arrow. The clutch device 8.5 is arranged on the movable carriage 19. The carriage 19 can be guided in the carriage guide 19.1 in the transverse direction of the guide rail 17.2 of the suspension rail 17.1. The carriage 19 together with the clutch device 8.5 is guided selectively back and forth between a displaced position and an engaged position by means of a carriage drive 20. The clutch device 8.5 is in the displaced position in fig. 2.1. In this case, the automation device 8 can be freely moved along the spinning positions 1.1-1.3 by the drive device 8.1.

For being supplied with compressed air, each spinning station has a connection station 14.1-14.3. The connection stations 14.1-14.3 are arranged between the rails 17.2 of the suspension track 17.1. In this embodiment, the connection stations 14.1-14.3 are each held on one side by a bracket 26 on one of the guide rails 17.2. The connection stations 14.1 to 14.3 and the coupling device 8.5 are arranged in an engagement plane which extends above the guide rail 17.2 of the suspension rail 17.1 in parallel with the guide rail 17.2. The connection stations 14.1 to 14.3 each have a plug connection 15 which can be combined with a plug adapter 16 of the clutch device 8.5.

In order to supply the supply unit 8.3 with compressed air, the clutch device 8.5 is first guided to the engagement position by the carriage drive 20. The clutch device 8.5 is in place flush with the connecting station 14.1 in the engaged position.

As shown in fig. 2.2, the clutch device 8.5 can be connected to the connecting station 14.1 in an automatic manner when the automatic operating device 8 continues the displacement movement. The plug adapter 16 of the clutch device 8.5 is plugged into the plug connection 15 of the connecting station 14.1. This is shown in fig. 2.2. Once the engagement procedure between the clutch device 8.5 and the connecting station 14.1 has been completed, the drive motor 8.2 of the drive unit 8.1 is stopped, decelerating the drive device 8.1. Since the connection stations are fixedly arranged in the movement path of the automation device 8, the clutch devices can be coupled to the respective connection station by a simple movement of the automation device 8. For this purpose, the drive motor 8.2 of the drive device 8.1 can be controlled at different speed levels. The engagement procedure is then preferably carried out at a comparatively low creep speed of the automatic operating device 8. However, in order to approach one of the plurality of spinning positions 1.1 to 1.3, the automation device 8 can be guided by the drive device 8.1 at a predetermined, faster movement speed.

As is evident from the illustrations in fig. 1 and 3, the suction ejector 11 is supplied with compressed air via a compressed air line 12 from the supply unit 8.3. For this purpose, the supply unit 8.3 is connected to the clutch device 8.5. The waste thread accumulated while the thread group 7 is guided by the suction ejector 11 is directly supplied to the waste thread container 9 through the waste line 13. The function and structure of such a waste thread container is known, for example, from WO2019007645A1, and is thus referred to herein by reference and is not further explained.

Once the joining robot 8.4 has joined the wire groups in the winding position 6.4 of the godet unit 5 and the winding unit 6 at the beginning of the process or when a process interruption occurs, the clutch device 8.5 can be disengaged from the respective connecting station 14.1. For this purpose, the movement of the automation device 8 in the opposite direction along the movement path of the automation device 8 is initiated. Once the clutch devices 8.5 have been separated from the respective connecting station 14.1, the clutch devices 8.5 are guided to the displacement position on the upper side of the automatic operating device 8. The automatic operating device 8 can now move freely on the suspension rail 17.1 and can be guided along this path of movement in a forward or reverse movement by the drive device 8.1.

This embodiment is considered here only as an example in terms of the structure of the clutch device 8.5 and the connecting station 14.1 as shown in fig. 1 to 3. What is important in the case of the melt spinning apparatus according to the invention is the moving movement engagement process between the clutch device 8.5 and one of the connection stations by means of the automatic operating device 8. Additional means for engaging the clutch device 8.5 to the connecting station 14.1-14.3 can then be avoided. In addition, the installation space limited to the guide device 17 can be used to achieve a compressed air supply on the automation device 8 in each spinning position.

In principle, it should be mentioned here that the connection stations in the spinning positions 1.1 to 1.3 and the clutch device of the automatic operating device 8 can also be used to guide the waste thread to the central container.

Claims

1. Melt spinning apparatus for producing synthetic threads, having an automatic operating device (8) and a plurality of spinning positions (1.1-1.3), each of which spinning positions (1.1-1.3) has a spinning device (2), a godet device (5) and a winding device (6), the automatic operating device (8) being able to be guided on a guide device (17) to the spinning positions (1.1-1.3) arranged in a row for the purpose of splicing threads, wherein each of the spinning positions (1.1-1.3) is assigned a connecting station (14.1-14.3), the connecting stations (14.1-14.3) being able to be selectively engaged to a clutch device (8.5) for the purpose of delivering compressed air, and wherein the clutch device (8.5) is arranged to be movable on the automatic operating device (8), characterized in that the connecting station (14.1-14.3) is arranged to be movable in a movement path of the automatic operating device (8) so that the clutch device (8.1-14.3) is able to be engaged directly by movement of the connecting station (1.1-14.3) and the automatic operating device (8.1-14.3) is able to be moved.

2. Melt-spinning apparatus according to claim 1, characterized in that the clutch device (8.5) is designed to be adjustable in the transverse direction of the movement path of the automatic operating device (8) between a displaced position and an engaged position, wherein the clutch device (8.5) in the displaced position together with the automatic operating device (8) can be guided freely over the movement path.

3. Melt-spinning apparatus according to claim 1 or 2, characterized in that the connection station (14.1-14.3) and the clutch device (8.5) are arranged in an engagement plane parallel to the movement path of the robot device (8).

4. A melt spinning apparatus according to claim 3, characterized in that the connection stations (14.1-14.3) each have a plug connection, the clutch device (8.5) has a plug adapter (16), and the plug adapter (16) is opposite the plug connection.

5. A melt spinning apparatus according to claim 3, characterized in that the clutch device (8.5) is held on a movable carriage (19), which movable carriage (19) can be guided in the engagement plane by means of a carriage drive device (20).

6. Melt-spinning apparatus according to claim 1, characterized in that the guide means (17) are formed by a suspension rail (17.1), the robot (8) is guided on the suspension rail (17.1), and the connection stations (14.1-14.2) are arranged between the guide rails (17.2) of the suspension rail (17.1).

7. Melt-spinning apparatus according to claim 1, characterized in that the automatic operating device (8) has a drive device (8.1) with a controllable drive motor (8.2), by means of which controllable drive motor (8.2) at least a slow speed of the automatic operating device (8) can be set in addition to the movement speed, which slow speed is slower than the movement speed.

8. Melt-spinning apparatus according to claim 1, characterized in that the automatic operating device (8) has a joint robot (8.4) and a supply unit (8.3) with a waste thread container (9), wherein the supply unit (8.3) is connected to the clutch device (8.5) for the transmission of compressed air.

9. Melt spinning apparatus according to claim 8, characterized in that the joint robot (8.4) has a suction ejector (11) which is connected to the supply unit (8.3) by means of a compressed air line (12) and a waste line (13).

10. Melt spinning apparatus according to claim 9, characterized in that the joining robot (8.4) has a controllable mechanical arm (10), which controllable mechanical arm (10) guides the suction jet (11) to splice the filaments in one of the spinning positions (1.1-1.3).