EP3695031B1 - Spinning device and method for stringing up in a spinning device - Google Patents

Description

Technical area

The invention relates to a spinning device and a method for spinning a spinning device for the continuous extrusion of shaped bodies from a spinning solution, as well as a spinning device for carrying out the method, in which process the shaped bodies are extruded as a loose spinning curtain from the spinning solution through spinnerets of the spinning device, the shaped bodies of the loose spinning curtain are combined into a shaped body bundle after extrusion, and the shaped body bundle is fed in a further step to a take-off member of the spinning device in order to start a continuous extrusion of the shaped bodies.

State of the art

Spinning devices of the type mentioned at the beginning and the spinning processes carried out with them are known from the prior art for the production of shaped bodies, for example fibers, filaments, films, etc. In the textile industry in particular, the processes mentioned are used for the production of spun staple or continuous fibers. To extrude the shaped bodies, the spinning solution is forced through a large number of spinnerets.

Before the further treatment of the extruded moldings in subsequent process steps, such as washing, pressing, drying, etc., which do not take place in the spinning device itself, the extruded moldings must be continuously transported out of the spinning device, for example via a take-off element. In order to be able to feed the shaped bodies to such a take-off element, they must first be combined into a bundle.

In general, it is mentioned that this first part of a spinning process is referred to as a spinning process or process for spinning ("spin-up", "lace-up") of a spinning device. Spinning the spinning device represents one first process stage of a spinning process, which is intended to enable or initiate a continuous extrusion of shaped bodies in the spinning process. The piecing process therefore includes all process steps of a spinning process which are necessary between the end of a first continuous extrusion and a subsequent continuous extrusion, for example after the spinning device has stopped or after spinning errors, such as the tearing off of some moldings below the spinnerets, have occurred.

This is how it shows WO 94/28218 A1 For example, a spinning device of the type mentioned at the beginning, the spinning curtain extruded from the spinnerets being guided through a bottom opening of the spinning bath container. The bottom opening has a reducing effect on the diameter of the spinning curtain, whereby the shaped bodies are combined into a shaped body bundle. However, the spinning and the manipulation of the spinning curtain are made significantly more difficult by the very high immersion depths of the spinning bath containers disclosed. Such spinning devices therefore suffer from the low reproducibility of the piecing process and from the high susceptibility to piecing errors, which do not enable satisfactory continuous extrusion of the shaped bodies and often make renewed piecing necessary.

Spinning devices for facilitating the piecing process are also known from the prior art. This is how it shows EP 0 574 870 A1 a spinning device in which the extruded shaped bodies are combined into a shaped body bundle as a spinning curtain after exiting the spinnerets. This is achieved by using a spinning funnel in the spinning bath of the spinning bath container, which narrows downward in cross-section and has a narrowed lower outlet opening. If the spinning curtain is guided through the spinning funnel, a bundle of shaped bodies is created when the shaped bodies exit the spinning funnel, thus facilitating further handling of the shaped bodies in the spinning device during piecing. However, such spinning funnels are disadvantageously arranged deep in the spinning bath container, which means that they are not easy to handle by the operator. In addition, such spinning devices have the disadvantage that large amounts of spinning bath liquid always have to flow through the spinning funnel in the spinning bath container in order to ensure satisfactory function, which, however, leads to turbulent flows in the spinning bath and the Process conditions during the continuous extrusion of the moldings are adversely affected.

The EP 0 746 642 B1 describes a spinning device to eliminate the aforementioned disadvantages, wherein a bundling element for bundling the shaped bodies is provided in the form of a deflection element in the spinning bath container. Although such devices avoid the previously mentioned turbulent flows in the spinning bath, the spinning process is made significantly more difficult, since an initial, manual bundling of the spinning curtain into a shaped body bundle by the operator is necessary in order to provide the shaped bodies in the deflection element. However, this disadvantageously requires a lot of effort from the operator. In addition, such a piecing process is very susceptible to piecing errors, in particular to incomplete bundling of the spinning curtain.

CN 103147182 A discloses the use of a rotating device with a rotatable torsion means for bundling filaments extruded from the spinnerets of a spinning device by torsion of these filaments into a shaped body bundle.

Disclosure of the invention

The present invention has therefore set itself the task of making a piecing process of the type described above simpler and more reproducible in terms of process engineering.

The invention solves the problem with regard to the piecing process in that the shaped bodies are combined into the shaped body bundle by torsion of the spinning curtain about a torsion axis.

If the shaped bodies are combined into the shaped body bundle by torsion of the spinning curtain about a torsion axis, the continuous extrusion of the shaped bodies and the bundling into a homogeneous shaped body bundle can be significantly improved, which is particularly beneficial to the reliability of the piecing process. When torsion of the spinning curtain, the individual shaped bodies are twisted with one another around a common point of contact, so that the compact bundle of shaped bodies is created at the point of contact. The torsion of the spinning curtain, i.e. the twisting of the individual shaped bodies around the common point of contact, can also be particularly advantageous for a low error rate when bundling the shaped bodies, since almost all of the shaped bodies are reliably in the Bundles can be combined. This can also be done with significantly less effort. In the methods for spinning spinning devices known from the prior art, the moldings can also build up and the spinning curtain can inflate during spinning due to insufficiently rapid removal of the shaped bodies after they have been extruded from the spinnerets. When the spinning curtain inflates, individual shaped bodies in the spinning curtain can stick together, which has a particularly disadvantageous effect on the integrity and homogeneity of the shaped body bundle. The torsion of the spinning curtain can overcome these disadvantages, in particular by not only creating a compact shaped body bundle, but the torsion can also ensure a continuous, easily controllable removal of the shaped bodies from the spinnerets, which reliably prevents the shaped bodies from piling up and the spinning curtain from inflating can. A particularly simple and reliable process sequence for spinning a spinning device can thus be provided. This advantageously also leads to a more uniform and stable spinning process.

The invention can also be particularly distinguished if the spinning process is a lyocell process and the shaped bodies are cellulosic shaped bodies, in particular cellulosic fibers, which are produced from a spinning solution containing water, cellulose and tertiary amine oxide through spinnerets the spinning device are extruded. With such a process, the torsion of the spinning curtain can already take place in the air gap between the spinnerets and the spinning bath, which creates better accessibility and thus a significantly simpler process.

In general, it is stated that shaped bodies can be understood to mean both continuous fibers or filaments as well as films and tubes. Such shaped bodies can, for example, subsequently be processed into staple fibers, nonwovens, yarns, textiles, or three-dimensional objects such as microspheres.

The torsion of the spinning curtain to the bundle of shaped bodies can be carried out particularly easily if the torsion axis runs essentially parallel to the extrusion direction of the extruded shaped bodies. If the torsion axis also runs through the center of the spinning curtain, it can be ensured that the torsion of the spinning curtain is uniform and symmetrical on all shaped bodies works. A particularly homogeneous bundle of shaped bodies without internal tensions can thus be created during piecing, which can further reduce the tendency to piecing errors. A particularly reliable and reproducible piecing process can thus be provided.

If the ends of the shaped bodies of the spinning curtain are placed on a rotatable torsion means of a rotation device, which torsion means causes the torsion of the spinning curtain through its rotation, a particularly reproducible and uniform torsion of the spinning curtain can be ensured. In particular, the speed of torsion of the spinning curtain can be adapted and coordinated to the required parameters of the spinning device by means of the rotation speed of the torsion means, thus ensuring particularly stable spinning conditions during piecing. For example, the desired withdrawal speed of the shaped bodies from the spinnerets and thus the desired shaped body properties (such as the thickness of the shaped body bundle, etc.) can be adjusted by the rotation speed of the rotating device, which can reliably prevent the formation of spinning errors. The reproducibility of the piecing process can thus be further increased. In addition, the use of a rotation device for torsion of the spinning curtain can contribute to the physical relief of the operator of the spinning device, which further simplifies the implementation of the method.

If the rotation device is positioned below the spinning curtain so that the ends of the shaped bodies come to rest on the stationary torsion means after their extrusion, the operators of the spinning device can be significantly relieved, especially in the initial phase of piecing. This is particularly the case when the torsion means of the rotation device is gradually accelerated in its rotation speed until a final speed is reached after the ends of the shaped bodies have been deposited. It is also conceivable that the rotation speed is continuously accelerated after the moldings have been deposited. It is also noted that the acceleration of the torsion agent can take place in linear or nonlinear acceleration profiles in order to optimize the torsion of the shaped bodies according to their properties. In the initial phase, very rapid handling of the newly extruded spinning curtain is of great importance, as errors in handling in this phase can lead to the increased formation of spinning errors, which require renewed spinning make. The method according to the invention can therefore be characterized by a lower tendency to piecing errors and by the fine motor and physical relief of the operator, as well as by high reproducibility.

The advantages mentioned above can be achieved particularly easily in terms of process engineering if the torsion means is formed by a rotatable turntable and the axis of rotation of the turntable runs essentially parallel to the direction of extrusion of the shaped bodies.

The torsion of the spinning curtain can be made even more reliable if the ends of the shaped bodies adhere to holding elements of the turntable. With the rotation of the turntable, the holding elements can take the ends of the shaped bodies with them in their rotational movement and twist the shaped bodies around one another around a common point of contact in the spinning curtain and thus cause the torsion of the spinning curtain.

If the torsion of the spinning curtain creates an area of attack on the bundle of shaped bodies, a particularly advantageous and simple handling of the bundle of shaped bodies can be made possible in the spinning process. By forming an attack area on the shaped body bundle, this can be easily and reliably manipulated and further processed in subsequent process steps. In addition, the defined attack area enables automated, mechanical handling and manipulation of the shaped body bundle. If the attack area is also created in the area of the smallest diameter of the twisted bundle of shaped bodies, particularly reliable handling of the bundle of shaped bodies can be achieved. Due to the torsion of the spinning curtain to form a bundle of shaped bodies, the area of the smallest diameter of the bundle of shaped bodies is located essentially at the apex of the spinning curtain, which means that the attack area can be easily, in particular machine-recognized, for example for fully automatic manipulation of the bundle of shaped bodies.

If an attack area on the shaped body bundle with a diameter of 1 to 20 cm, in particular 3 to 12 cm, is also created, the reproducibility of the piecing process can be further increased. Such a bundle of shaped bodies can be characterized by particularly reliable handling conditions, in particular reliable machine grippability, in further process steps.

A particularly simple piecing process can be created if an automatic gripping device grips the bundle of shaped bodies and feeds it to the take-off element of the spinning device. An automatic gripping device can be, for example, a gripper on a manipulator arm, which automatically grips the molded body bundle after torsion, transports it to the extraction element by moving the manipulator arm and provides it in the extraction element (for example by clamping, clamping, fastening, etc.). The gripping device advantageously grips the molded body bundle at the formed attack area and can thus ensure a high level of process reliability. The method can also have a particularly advantageous effect if the shaped body bundle is only provided in the withdrawal member after the rotation device has reached a final speed. This makes it possible, on the one hand, for the shaped body bundle to be fully formed and to have the properties necessary for further processing and, on the other hand, for the desired properties of the extruded shaped bodies (for example the desired fiber titer) to be achieved. The final speed of the rotation device can be determined by the desired molding properties or by the required withdrawal speed of the moldings from the spinnerets. The manipulator arm, which provides the bundle of molded bodies in the take-off member, should advantageously be matched to the extrusion of the molded bodies, in particular to the take-off speed of the molded bodies, in terms of both movement speed and movement profile. Movements that are too rapid or unfavorable take-off angles in the course of the movement can in turn lead to piecing errors, in particular to shaped bodies in the spinning curtain tearing, which means piecing has to be carried out again. The piecing process according to the invention allows the aforementioned piecing errors to be avoided and accordingly a piecing process with high reproducibility can be created, which can also run fully automatically and can offer significant relief in the process for the operator of the spinning system compared to known methods.

The piecing process can be made more reliable if the molded body bundle is cut off after gripping by the automatic gripping device. Advantageously, the bundle of shaped bodies is trimmed below the attack area, so that the lower part of the bundle of shaped bodies deposited on the rotation device is separated. The feeding of the The trimmed bundle of molded bodies to the trigger member can thus be made significantly easier.

The invention also relates to a piecing device for piecing a spinning device, with a bundling device for bundling shaped bodies extruded from the spinnerets of the spinning device, which bundling device has a rotating device with at least one means rotatable about an axis of rotation, the rotatable means being designed such that the shaped bodies can be combined into the shaped body bundle via the means.

The invention has therefore further set itself the task of improving a piecing device of the type mentioned above in such a way that the method for spinning the spinning device - in particular the bundling of the spinning curtain into a shaped body bundle - can be carried out easily and reproducibly using the piecing device and with little effort can.

The invention solves the problem with regard to the piecing device in that the rotatable means is designed as a torsion means, in particular as a turntable, for torsion of the molded bodies and the axis of rotation of the torsion means is essentially parallel to the extrusion direction of the molded bodies.

If the piecing device has a bundling device for bundling the extruded moldings into a bundle of moldings, and the rotatable means is designed as a torsion means for torsion of the moldings and the axis of rotation of the torsion means is essentially parallel to the direction of extrusion of the moldings, then a particularly stable and simple piecing device can be used a spinning device can be created, which can further simplify a method for spinning the spinning device. The rotation device with the torsion means can in particular be designed to receive ends of the extruded moldings from the loose spinning curtain, so that the ends of the moldings can be placed on the torsion means and a torsion of the spinning curtain is generated via the rotational movement of the torsion means. The rotational movement of the torsion means and the associated torsion of the spinning curtain to form a bundle of shaped bodies can thus replace the difficult step of bundling the shaped bodies with a device that is particularly simple in terms of construction.

If the torsion means is designed as a turntable, the extruded moldings can be torsioned in a particularly simple manner. This is particularly the case if the turntable is designed to be rotatable essentially parallel to the extrusion direction of the shaped bodies extruded from the spinnerets. A rotation device can be created for torsion of the loose spinning curtain consisting of extruded moldings about a torsion axis parallel to the extrusion direction of the moldings, which can produce a compact bundle of moldings in a particularly stable and reliable manner. The reliability and stability of the spinning device can thus be further increased overall. This is particularly the case when the torsion means is designed to torsion the extruded moldings about a common torsion axis and the torsion axis of the moldings coincides with the rotation axis of the torsion means.

In general, it is also mentioned that the spinning device according to the invention can be particularly suitable for spinning a spinning device for extruding cellulosic shaped bodies from a spinning solution containing water, cellulose and tertiary amine oxide.

The reliability of the piecing device can be further increased if the torsion means has holding elements to increase the adhesion between moldings and torsion means. This is particularly true if the holding elements are designed as hooks.

If the piecing device also has at least one manipulator arm and at least one end effector on the manipulator arm, with at least one end effector forming the bundling device, a stable spinning device can be created which enables simple and reproducible piecing. The piecing device can in particular carry out the piecing of the spinning device fully automatically in order to relieve the physical and motor load on the operators of the spinning device. While in the known spinning devices mentioned at the beginning a great deal of force is required in order to provide the shaped body bundle extruded from the spinnerets in a take-off member of the spinning device during spinning, the operators can be greatly relieved of the workload due to the comparatively low amount of force required in the spinning device according to the invention. In addition, the spinning device according to the invention can be characterized by particularly easy handling and a high level of safety in operation.

The handling of the spinning device can be further simplified if the spinning device has a first manipulator arm with a first end effector, the first end effector having a gripper for gripping a bundle of shaped bodies. The gripper on the first manipulator arm can be designed such that it can reliably grasp the bundle of shaped bodies and feed it to a take-off element of the spinning device. The transport of the shaped body bundle from the spinnerets to the take-off member can be carried out by moving the first manipulator arm, in particular along freely selectable trajectories in space. In a process for spinning the spinning device, the comparatively physically demanding and difficult to reproduce steps of manually threading the bundle of shaped bodies can be dispensed with. This not only represents a special physical relief for the operators of the spinning device, but can also contribute greatly to increasing the safety against operating errors of the spinning device.

If the piecing device also has a second manipulator arm with a second end effector, the second end effector having the bundling device, a particularly flexible piecing device can be created with a bundling device, which bundling device is thus designed to be displaceable between a use position and a rest position if necessary. The spinning device can therefore react flexibly to the requirements of the process: for example, the bundling device can be moved to a rest position when not in use and thus undesirable hindrances caused by the bundling device in the spinning device can be avoided. The rotation device can therefore be moved in and out between the spinnerets and the spinning bath container depending on the process status. A more reliable spinning device can thereby be created. A structurally simple bundling device can also be created if it is formed by the rotation device.

The handling of the bundle of shaped bodies by the piecing device can be further improved if the piecing device also has a cutting device for cutting off the bundle of shaped bodies. Particularly preferably, the cutting device can be provided on the first manipulator arm and in particular can be operatively connected to the gripper in such a way that the cutting of the shaped body bundle takes place automatically after a successful gripping process of the gripper.

The invention has also set itself the task of making a spinning device of the type mentioned at the beginning more reliable and of making the spinning of the spinning device easier.

The invention solves the problem by a spinning device for the continuous extrusion of shaped bodies, in particular for the extrusion of cellulosic shaped bodies from a spinning solution containing water, cellulose and tertiary amine oxide, having at least one spinning bath container containing the spinning bath, spinnerets assigned to the spinning bath container for extruding the shaped bodies from the spinnerets into the Spinning bath, with a piecing device for piecing the spinning device according to one of claims 9 to 14.

A rotation device with a rotatable torsion means can also be distinguished according to the invention if it is used to bundle shaped bodies extruded from the spinnerets of a spinning device by torsion of these shaped bodies using the torsion means to form a shaped body bundle. The torsion means can be, for example, a turntable. In addition, it is particularly advantageous if the axis of rotation of the torsion means is essentially parallel to the extrusion direction of the extruded moldings and the torsion means is designed to be freely rotatable with respect to the spinning device, independently of the spinning device. In particular, the aforementioned rotation device can be distinguished if it is used to carry out the piecing method according to the invention according to claims 1 to 8.

Brief description of the drawings

Fig. 1

eine teilweise aufgerissene Seitenansicht der erfindungsgemäßen Spinnvorrichtung vor Durchführung des erfindungsgemäßen Verfahrens zum Anspinnen der Spinnvorrichtung,

Fig. 2

eine schematische Darstellung des erfindungsgemäßen Verfahrens zum Anspinnen der Spinnvorrichtung während eines ersten Verfahrensschritts,

Fig. 3

eine schematische Darstellung des erfindungsgemäßen Verfahrens während eines weiteren Verfahrensschritts,

Fig. 4

eine teilweise aufgerissene Seitenansicht der erfindungsgemäßen Spinnvorrichtung nach Abschluss des Anspinnverfahrens, und

Fig. 5

eine teilweise Draufsicht auf eine Rotationsvorrichtung der erfindungsgemäßen Spinnvorrichtung.

The subject matter of the invention is illustrated below using an exemplary embodiment. Show it

Fig. 1

a partially torn side view of the spinning device according to the invention before carrying out the method according to the invention for spinning the spinning device,

Fig. 2

a schematic representation of the method according to the invention for spinning the spinning device during a first process step,

Fig. 3

a schematic representation of the method according to the invention during a further process step,

Fig. 4

a partially torn side view of the spinning device according to the invention after completion of the spinning process, and

Fig. 5

a partial plan view of a rotation device of the spinning device according to the invention.

Ways of carrying out the invention

According to the Fig. 1 to 4 a spinning device 1 is shown in different stages of spinning. Fig. 1 shows the spinning device 1 with the loose spinning curtain 2 made of extruded shaped bodies 3 before spinning, ie before the shaped bodies 3 were combined in a bundling device 5 to form a shaped body bundle 4, as shown in FIG Fig. 2 is visible. The spinning device 1 also has a spinning solution 6, which is extruded through a plurality of spinnerets 7 to form the shaped bodies 3. The spinning solution 6 is preferably a solution that contains water, cellulose and a tertiary amine oxide. Below the spinnerets 7 there is a spinning bath container 8 which contains a spinning bath 9. A mixture of water and a tertiary amine oxide is preferably used as the spinning bath 9.

Fig. 4 again shows the spinning device 1 after spinning. The shaped bodies 3 are therefore combined into a shaped body bundle 4 by the bundling device 5 and the shaped body bundle 4 is continuously conveyed by a take-off member 10 of the spinning device 1, whereby a continuous extrusion of shaped bodies 3 from the spinnerets 7 takes place.

As in Fig. 1 can further be seen, the spinning device 1 has a piecing device 11 for carrying out the method for spinning the spinning device 1, the piecing device 11 having a bundling device 5, a first manipulator arm 12 and a second manipulator arm 13. A first end effector 14 is provided on the first manipulator arm 12, which end effector 14 is designed as a gripper 16. The gripper 16 is designed in such a way that it can enclose and grip the molded body bundle 4 in a non-positive manner. The gripper 16 is also movably and controllably connected to the first manipulator arm 12. In conjunction with the free mobility of the manipulator arm 12, the gripper 16 can move the gripped bundle of molded bodies 4 along almost any trajectories.

The piecing device 11 also has a rotation device 17, which causes the torsion of the shaped bodies 3 in the loose shaped body curtain 2. The For this purpose, the rotation device 17 has a rotatable torsion means 18, which is preferably designed as a turntable 31, the torsion means 18 or the turntable 31 being provided as an end effector 15 on the second manipulator arm 13 and taking over the function of the bundling device 5. The axis of rotation 19 of the torsion means 18 and thus the torsion axis 20 of the spinning curtain 2 runs in particular parallel to the extrusion direction 32 of the shaped bodies 3 in the loose spinning curtain 2.

Fig. 5 shows a detailed view of the rotation device 17 of the piecing device 11. In order to ensure reliable torsion of the spinning curtain 2, holding elements 24 in the form of hooks 25 are provided on the torsion means 18, or in particular on the turntable 31. The shaped body ends 23 can thereby adhere reliably to the hooks 25 and cause the spinning curtain 2 to torsion via the rotational movement of the torsion means 18.

The torsion means 18 as a bundling device 5 can be extended and retracted between the spinnerets 7 and the spinning bath container 8 by means of the second manipulator arm 13, whereby the bundling device 5 can be moved from a rest position 21 to a use position 22 as required. The bundling device 5 can thus remain in the rest position 21 during the continuous extrusion of the shaped bodies 3 and does not represent an obstacle between the spinnerets 7 and the spinning bath container 8. If it is necessary to spin the spinning device 1 again, the bundling device 5 can be moved into the position of use 22 and enable a spinning method according to the invention.

The method according to the invention for spinning the spinning device 1 is shown schematically in the Fig. 1 to 4 shown. Fig. 1 shows the spinning device 1 in the first process step of spinning. The shaped bodies 3 are extruded from the spinnerets 7 as a loose spinning curtain 2. In a further step - as in the Figure 2 shown schematically - the bundling device 5, in particular the torsion means 18 or the turntable 31, is positioned between the spinnerets 7 and the spinning bath container 8 so that the ends 23 of the extruded moldings 3 come to rest on the torsion means 18. The molded body ends 23 adhere to the holding elements 24, or hooks 25, of the torsion means 18 designed as a turntable 31 and thus increase the adhesion between the molded body 3 and the torsion means 18, so that undesirable sliding of the molded bodies 3 on the torsion means 18 is prevented. The torsion means 18 is preferably too The process begins at a standstill, but can also be set in rotation before the molded body ends 23 hit the torsion means 18. After the shaped body ends 23 hit the torsion means 18, the rotation speed of the torsion means 18 is increased until a predetermined final speed is reached. This can be done step by step or continuously according to a predetermined acceleration profile. Due to the rotation of the torsion means 18, the spinning curtain 2 is twisted about the torsion element 20, which preferably runs parallel to the extrusion direction 32 of the shaped bodies 3 and through the center of the spinning curtain 2. The final speed of the torsion means 18 of the rotation device 17 determines the desired withdrawal speed of the shaped bodies 3 from the spinnerets 7 for the piecing process and thus, for example, the desired fiber titer during piecing. In addition, the diameter 28 of the shaped body bundle 4 can be influenced by the rotation speed. Diameters 28 of 1 to 20 cm, or in particular of 3 to 12 cm, have proven to be particularly preferred in the process, since such diameters 28 enable simple and reliable handling of the shaped body bundle 4 by a gripper 16. The torsion of the spinning curtain 2 creates an attack area 29 on the shaped body bundle 4, which is preferably located in the area of the smallest diameter 28 of the shaped body bundle 4. The torsion of the spinning curtain 2 also leads to the formation of a vertex 30 on the twisted spinning curtain 2, with the smallest diameter 28 of the shaped body bundle 4 being located essentially at the vertex 30.

In the Fig. 2 is the spinning device 1 according to Fig. 1 shown after the torsion means 18 has been moved from its rest position 21 to its use position 22 via the second manipulator arm 13 and positioned between the spinnerets 7 and the spinning bath container 8. The spinning curtain 2 was then generated as described above in a second process step by the rotation of the torsion means 18 and thus the shaped body bundle 4 was created.

In Fig. 3 The spinning device 1 is also shown after the shaped body bundle 4 has been produced by torsion of the spinning curtain 2. The shaped body bundle 4 is now gripped by the gripper 16 on the first manipulator arm 12 of the piecing device 11 in order to subsequently provide the shaped body bundle 4 in a take-off member 10 of the spinning device 1.

Fig. 4 represents the last process step, whereby first the molded body bundle 4, which is reliably held by the gripper 16, is guided through the spinning bath 9 around a deflection element 26 in the spinning bath container 8 by means of the first manipulator arm 12. Subsequently, the shaped body bundle 4 is led out of the spinning bath container 8 again and threaded into the take-off element 10, which in particular consists of a row of take-off godets 27 one behind the other. After threading the bundle of shaped bodies 4 in the take-off member 10, a continuous extrusion of the shaped bodies 3 from the spinnerets 7 is possible and the spinning process is thus successfully completed.

Claims (16)

1. A method for spinning up a spinning device (1) for the continuous extrusion of molded bodies (3) from a spinning solution (6), more particularly for the extrusion of cellulosic molded bodies (3) from a spinning solution (6) containing water, cellulose, and tertiary amine oxide, wherein

   - the molded bodies (3) are extruded from the spinning solution (6) through spinnerets (7) of the spinning device (1) in the form of a loose spinning curtain (2),

   - the molded bodies (3) of the loose spinning curtain (2) are combined into a molded body bundle (4) after the extrusion, and

   - the molded body bundle (4) is, in a further step, fed to a draw-off member (10) of the spinning device (1) in order to start a continuous extrusion of the molded bodies (3),

   characterized in that the molded bodies (3) are combined into the molded body bundle (4) by twisting the spinning curtain (2) around a torsion axis (20).
2. The method as claimed in claim 1, characterized in that the torsion axis (20) extends substantially parallel to the extrusion direction (32) of the molded bodies (3), more particularly through the center of the spinning curtain (2).
3. The method as claimed in any of claims 1 or 2, characterized in that the molded bodies (3) of the spinning curtain (2) are deposited with their ends (23) on a rotatable torsion means (18) of a rotation device (17), which torsion means (18), through its rotation, causes the torsion of the spinning curtain (2).
4. The method as claimed in claim 3, characterized in that the rotation device (17) is positioned underneath the spinning curtain (2) such that the ends (23) of the molded bodies (3), after their extrusion, come to rest on the non-moving torsion means (18), and that the torsion means (18), after the ends (23) of the molded bodies (3) have been deposited, is accelerated in its rotational velocity until reaching a final velocity.
5. The method as claimed in claims 3 or 4, characterized in that the torsion means (18) is formed as a rotatable turntable (31) and that the rotation axis (19) of the turntable (31) extends substantially parallel to the extrusion direction (32) of the molded bodies (3).
6. The method as claimed in claim 5, characterized in that the ends (23) of the molded bodies (3) adhere to holding elements (24) of the turntable (31) and that the holding elements (24), through the rotation of the turntable (31), cause a torsion of the spinning curtain (2).
7. The method as claimed in any of claims 1 to 6, characterized in that the torsion of the spinning curtain (2) creates an engagement area (29) on the molded body bundle (4), more particularly in the area of the smallest diameter (28) of the twisted molded body bundle (4).
8. The method as claimed in any of claims 1 to 7, characterized in that an automatic gripping device (16), more particularly a gripper (16) on a manipulator arm (12), grabs the molded body bundle (4) - preferably after the torsion means (18) reaches a final velocity - in the engagement area (29) and feeds it to a draw-off member (10) of the spinning device (1).
9. A spin-up device for spinning up a spinning device (1), including a bundling device (5) for bundling of molded bodies (3) extruded from the spinnerets (7) of the spinning device (1) into a molded body bundle (4), which bundling device (5) includes a rotation device (17) with at least one means (18) that is rotatable around a rotation axis (19), the rotatable means (18) being configured such that the molded bodies (3) are combined into the molded body bundle (4) with the help of said means (18), characterized in that the rotatable means (18) is formed as a torsion means (18), more particularly as a turntable (31), for the torsion of the molded bodies (3), and that the rotation axis (19) of the torsion means (18) is substantially parallel to the extrusion direction (32) of the molded bodies (3).
10. The spin-up device as claimed in claim 9, characterized in that the torsion means (18) is configured for twisting the extruded molded bodies (3) around a common torsion axis (20) and that the torsion axis (20) of the molded bodies (3) coincides with the rotation axis (19) of the torsion means (18).
11. The spin-up device as claimed in any of claims 9 or 10, characterized in that the torsion means (18) includes holding elements (24) to increase the adhesion between the molded bodies (3) and the torsion means (18), the holding elements (24) being more particularly formed as hooks (25).
12. The spin-up device as claimed in any of claims 9 to 11, characterized in that the spin-up device (11) includes a first manipulator arm (12) with a first end effector (14), the first end effector (14) including a gripper (16) for grabbing a molded body bundle (4).
13. The spin-up device as claimed in any of claims 9 to 12, characterized in that the spin-up device (11) includes a second manipulator arm (13) with a second end effector (15), the second end effector (15) including the bundling device (5).
14. The spin-up device as claimed in any of claims 9 to 13, characterized in that the bundling device (5) is configured as displaceable between a rest position (21) and a use position (22), more particularly by means of the second manipulator arm (13).
15. A spinning device for the continuous extrusion of molded bodies (3), more particularly for the extrusion of cellulosic molded bodies (3) from a spinning solution (6) containing water, cellulose, and tertiary amine oxide, including at least a spinning bath container (8) containing spinning bath (9), spinnerets (7) associated with the spinning bath container (8) for the extrusion of the molded bodies (3) from the spinnerets (7) into the spinning bath (9), with a spin-up device (11) for spinning up the spinning device (1) as claimed in any of claims 9 to 14.
16. Use of a rotation device (17) for spinning up a spinning device, wherein the rotation device (17) comprises a torsion means (18) that is rotatable with respect to the spinning device (1), more particularly a turntable (31), for bundling of molded bodies (3) extruded from the spinnerets (7) of the spinning device (1) into a molded body bundle (4) by twisting these molded bodies (3) by means of the torsion means (18).

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