[0001] The invention relates to a spinning device and a method for piecing a spinning apparatus for the continuous extrusion of moldings from a spinning solution containing a solvent and dissolved in the solvent of cellulose, in which the shaped bodies are extruded as a loose textile curtain of the dope through spinnerets of the spinning device , the moldings of the loose textile curtain are summarized after extrusion into a shaped body bundle, and the bundle of molded body is supplied in a further step, a draw-off member of the spinning device to start a continuous extrusion of the molding.

[0002] Further, the invention relates to a piecing apparatus for performing the method.

State of the art

[0003] spinning devices of the aforementioned type and its carried out spinning processes are known from the prior art for the production of moldings, for example, fibers, filaments, films, etc.. In particular, in the textile industry, said method of preparation are used by spun staple or continuous fibers. For extrusion, the mold body to the spinning solution is forced through a plurality of spinnerets.

[0004] Prior to further treatment of the extruded shaped bodies in subsequent process steps, such as washing, pressing, drying, etc., which do not take place in the spinning apparatus itself, the extruded molded body to be transported, for example, via a draw-off member continuously from the spinning device. To the moldings such a draw-off member

to be able to perform, they must be grouped initially into a bundle.

[0005] In general, that this first part is referred to as a spinning method or piecing method for piecing ( "spin-up", "lace-up") of a spinning device is mentioned. Piecing the spinning device is a first process step a spinning method, which enable a continuous extrusion of moldings in the spinning process or to initiate. Accordingly, the piecing process includes all process steps in a spinning process which is necessary between the end of a first continuous extrusion and subsequent continuous extrusion, for example after a standstill of the spinning device, or after spinning defects such as tearing of some moldings are below the spinning nozzle, occurred.

[0006] Thus, WO 94/28218 A1 shows, for example, a spinning device of the initially mentioned kind, wherein said extruded from the spinning jet spinning curtain is directed through a bottom opening of the Spinnbadbehälters. The bottom opening acts by reducing the diameter of the spinning curtain, are combined whereby the molded body into a molded body bundle. Piecing and the manipulation of spin curtain are however considerably more difficult by the very high depths of the disclosed therein Spinnbadbehälter. therefore Such spinning devices suffer from poor reproducibility of the Anspinnverfahrens as well as to the high susceptibility to Anspinnfehlern which allow no satisfactory continuous extrusion of the shaped bodies and often make a renewed piecing necessary.

[0007] The prior art discloses also spinning devices to facilitate Anspinnverfahrens. For instance, EP 0574870 A1 discloses a spinning device in which the extruded shaped body are summarized, after emerging from the spinneret as a spin curtain into a molding bundle. This is achieved by the use of a spinning funnel in the spin bath of Spinnbadbehälters which narrows down in cross-section and has a lower restricted orifice. If the spin curtain out through the trumpet, so at the exit of the molded body of the spinning funnel a molding beam is created, and thus the further handling of the shaped bodies in the

Spinner easier during piecing. Such spinning funnel are arranged, however, disadvantageous in deep Spinnbadbehälter, thus allowing easy handling is not given by the operator. In addition, such spinning devices show the disadvantage that always high amounts of spinning bath liquid must flow through the spinning funnel in Spinnbadbehälter adversely affected to a satisfactory function to ensure, however, leading to turbulent flows in the spinning bath and the process conditions during the continuous extrusion of the molding.

[0008] EP 0746642 B1 describes a spinning apparatus to resolve above-mentioned disadvantages, wherein a bundling member for bundling the shaped body in the form of a deflection element is provided in Spinnbadbehälter. Although such devices avoid the aforementioned turbulent flows in the spinning bath, the piecing process is, however, considerably more difficult, since a initial, manual focusing of the spin curtain is necessary to form a molding bundle by the operator to provide the molded body in the deflection element. However, this requires a disadvantage some effort by the operator. In addition, such piecing is very susceptible to Anspinnfehlern, especially against an incomplete pooling of spin curtain.

Disclosure of the Invention

[0009] The present invention has therefore set itself the task to design a piecing of the above-described type a technically simple and reproducible.

[0010] The invention achieves this object by the features of independent claim 1.

[001 1] If the tensile strength of the molded body of the non-textile curtain regionally increased after their extrusion and before merging to form a molding bundle, at least, the continuous extrusion of the shaped bodies and the pooling can be significantly improved to a homogeneous moldings bundle and facilitated, the reliability of the is Anspinnverfahrens particularly beneficial. By increasing the tensile strength namely the conditions can be established that the moldings bundle bundled by machine and / or can be grasped. the loose spin curtain in particular must have the tensile strength of the moldings are increased such that a machine combining and feeding is possible, the shaped body at a draw-off member. The extruded mold body, which consists essentially of not precipitated, consist of the molded bodies extruded spinning solution have namely during and immediately after the extrusion from the spinning nozzles a particularly low viscosity. Due to the low viscosity, the extrusion of the spinning solution is namely possible through the spinneret. However, the low viscosity due in exchange for a very low tensile strength of the moldings. The extruded moldings can therefore not withstand the forces occurring during mechanical manipulation and tear off. An at least partially increasing the tensile strength may thus allow a particularly simple and reliable method for piecing a spinning device. This advantageously also subsequently in a more uniform and stable spinning process, since the occurrence can be prevented from spinning defects.

[0012] In general, it is noted that the extruded from the spinneret spinning mass is understood to be moldings, which may for example be in the form of filaments or films. Such moldings can subsequently into final products, such as staple fibers, continuous fibers, nonwovens, sheets, tubes, powders, etc. can be processed.

[0013] The invention also may be particularly distinguished when the continuous extrusion of the shaped bodies is carried out by the lyocell process, and it is, is in the form bodies are cellulosic molded body, in particular cellulose filaments, which from a spinning solution containing water, cellulose and tertiary amine oxide are extruded through spinnerets of the spinning apparatus. In such a process the grouping of the mold body to the mold body can be made namely bundle already in the air gap between the spinneret and the spinning bath, whereby an improved accessibility and thus a significantly simpler method is provided.

[0014] mechanical manipulation of the body form the grouping of the molded body is understood to be the molding bundle and the supply of the molded bodies bundle to a draw-off device in general. Such machine manipulation can be carried out preferably partially or fully automatically or under human control.

[0015] If the tensile strength of the molded body increases, at least in regions, so that the mold body is substantially not tear under its own weight, so the reliability can Anspinnverfahrens of the invention are further increased. Is the tensile strength that is at least so high that the formed body a load to withstand their own weight and not tear off, so a secure mechanical manipulation of the extruded molding can be carried out of the loose textile curtain. The feed speeds of a machine manipulation are namely so selected here that essentially the extrusion speed to correspond to the molded body of the spinneret, which always acts on the shaped bodies during such manipulation, a force is which is smaller than that of weight force generated by the weight of the moldings. Thus, it can be ensured that the tensile strengths of the extruded shaped body are high enough such that there is substantially no deformation of the mold body by acting manipulation forces.

[0016] provided by the at least partially increase the tensile strength of an engagement area on the molded body bundle so, in the piecing, a particularly advantageous and easy handling of the moldings beam are made possible. By the formation of attack range on the molded body bundle this can in fact be easily and reliably manipulated and processed further in subsequent process steps. In addition, automated, mechanical handling and manipulation allows the moldings bundle through the defined area attack. Have also the molded article in the engagement area a with respect to the spinning solution to the 1, 5-fold increased viscosity, then a particularly reliable handling of the moldings bundle are ensured. The tensile strength of the shaped body is about to increase in a range, which overlaps to the bundling of the mold body to the mold body beam substantially coincides with the attack area. A safe and reliable handling of the moldings bundle, especially a machine, fully automatic manipulation can thus be made possible.

[0017] The handling of the moldings bundle can be made more reliable when the mold body in the engagement area a with respect to the spinning solution to 2 times, in particular at the 4-times, have increased viscosity.

[0018] The tensile strength of the shaped bodies in the attack area can advantageously be increased so that the supporting force per shaped body up to tear off at least 0.5 mN, preferably at least 1 mN, is.

[0019] If, in addition, this can be further increased in its piecing reproducibility an engagement portion on the molded body bundle having a diameter of 1 to 20 cm, especially from 3 to 12 cm is provided. Such moldings bundle may in fact have particularly reliable handling conditions, in particular a reliable machine tangibility, characterized in further process steps.

[0020] If the grouping of the molded body to the molding bundles and / or the feeding of the mold body to the bundle take-off element by machine, so the reliability and reproducibility of the Anspinnverfahrens can also be significantly improved. In particular Anspinnfehler such as torn moldings or unwanted VerknotungenA erdickungen, the moldings are prevented by the manual grouping. One caused by such Anspinnfehler renewed piecing can thus be prevented. In addition, the machine combining the shaped body or the supplying machine may constitute the moldings beam at the trigger element is a significant labor and relief force against a manual piecing method for the operating personnel.

[0021] A particularly simple piecing can be created when an automatic gripping device grips the moldings bundle and feeds the draw-off member of the spinning apparatus by machine. An automatic gripping device may be as a gripper on a manipulator arm, wherein the moldings bundle after the twist engages automatically transported via displacement of the manipulator arm to the draw-off member and in the draw-off member providing (such as by clamping, clamping, fastening, etc.). The manipulator, which provides the mold body in the bundle take-off element, should in this case be tuned advantageously both in movement speed and movement profile on the extrusion of the shaped bodies, and in particular the withdrawal speed of the mold body.

in particular to the fact that molded articles in the spin curtain tear, must be performed again whereby the piecing. The inventive piecing process, in particular by the increased tensile strength of the molded body can aforementioned Anspinnfehler be avoided, and accordingly, a piecing process with high reproducibility can be provided which also can be fully automated and provide significant relief in the process sequence for the operator of the spinning plant over known methods can ,

[0022] In addition, a high process safety can be ensured if the gripping device in this case advantageously the tablet bundle engages the engagement portion formed.

[0023] The piecing could be made more reliable when the molded body bundle is cut after gripping by the automated picking means. Advantageously, the shaped body is thereby trimmed bundle below the engagement portion, so that the lower part of the mold body bundle is separated. Threading and turning the trimmed shaped body bundle to the deflection in Spinnbadbehälter and then feeding the moldings bundle to the draw-off device can thus be much easier.

[0024] When cooled, the moldings after its extrusion to increase their tensile strength, the reliability can be increased to the Anspinnverfahrens technically particularly simple manner. By at least partially cooling the mold body, the viscosity can namely extruded into the mold body dope can be increased and thus a sufficient tensile strength can be achieved in the shaped bodies to permit automatic manipulation of the molded body or the molded body bundle.

[0025] The advantages described above can be achieved particularly easily if the temperature of the molded body is smaller after cooling to at least 10 ° C than the temperature of the spinning solution. If the shaped body extruded, for example, for a Lyocell process, then a reduction in the temperature of the mold body, in particular directly after the extrusion from the spinning solution, at 10 ° C lead to at least a doubling of viscosity. The shaped bodies are particularly preferably at least partially cooled by at least 20 ° C, in particular at least 30 ° C, with respect to the spinning solution. A sufficiently high tensile strength in the moldings can be achieved this way.

[0026] The process can be designed very reliable if the cooling of the shaped body thereof is performed by at least region-wise blowing a cooling air flow. The cooling air stream used in this case may preferably be a flow of air having a moisture content, in particular of greater than or equal to 5%, to be. By the continuous cooling air flow namely a reliable cooling of the mold body can be carried out after extrusion from the spinnerets.

[0027] The method can also be designed very reliable if the cooling of the molded body is carried out by at least region-wise spraying a cooling liquid. Alternatively, it is also possible to cool the shaped body by at least region-wise immersion in a cooling liquid. The cooling liquid is preferably an aqueous solution, for example water or a solvent comprising. By applying a cooling liquid to the mold body that is particularly fast and reliable cooling and thus increasing the strength of the moldings can take place.

[0028] The aforementioned advantages can be further improved if the cooling liquid containing a coagulant for the dissolved cellulose. If the molded article produced, for example, using a Lyocell process, the coagulant may approximately be a mixture of water and tertiary amine oxide. By coagulating the strength of the moldings can be increased even further, so that a particularly reliable mechanical and / or automated, the molded body is made possible manipulation.

[0029] If the moldings summarized by torsion of spin curtain about a torsional axis to the molding bundle so the automated bundling can be made into a homogeneous moldings bundle on technically simple manner. In the twist of the spin curtain, the individual shaped bodies are twisted together around a common point of contact, so that at the point of contact is created, the compact moldings bundle. The twist of the spin curtain, so the twisting of the individual moldings around the common point of contact, may also be particularly advantageous effect for a low error rate in the bundling of the moldings since reliable almost all moldings are summarized in the bundle

can. This can also be done with a much smaller force. In the known prior art methods for piecing of spinning devices, it may also by insufficiently rapid removal of the molded body after its extrusion from the spinnerets in particular to a damming of the mold body and thereby come to a swelling of the spinning curtain during piecing. On inflation of the spin curtain turn individual moldings in the spinning curtain can stick together, which is particularly detrimental to the integrity and homogeneity of the molded body bundle. The twist of the spin curtain can overcome these disadvantages, in particular by not only a compact shaped body bundle is created, but the twist continuously for one,

[0030] The twist of the spin curtain into the shaped body bundle can be made particularly simple if the torsion axis is substantially parallel to the extrusion direction of the extruded molding. The torsion axis extends also through the center of the spinning curtain, it can be ensured that the twist of the spin curtain acts uniformly on all moldings and symmetrical. A particularly homogeneous moldings bundle without internal stresses can thus in the course of the piecing are created which can further reduce the tendency to Anspinnfehlern. A particularly reliable and reproducible piecing can thus be provided.

[0031] The aforementioned advantages can be moved particularly easily achieved when the torsion means is formed by a rotatable turntable and extends the axis of rotation of the turntable is substantially parallel to the extrusion direction of the molding.

[0032] Alternatively, the twist of the spin curtain around a torsion axis, the automatic bundling into a homogeneous moldings bundle as a process technology easily done when the moldings are summarized by wrapping around the spin curtain with a sling and contraction of the loop into the shaped body bundle. The wrapping of the loose spin curtain and subsequent contraction can in fact reliably provide a compact shaped body bundle. , by looping

reliably, the entire curtain spinning are detected and are bundled in a well-defined point of contact. In addition, the wrap can be very quickly carried out, which automated processing is further beneficial.

[0033] Further, the bundling machine can be made into a homogeneous molded article bundle on technically simple way, when the shaped bodies are combined by carrying out the spinning by a curtain is reducing in cross-section hopper to the mold body bundle.

[0034] The invention also relates to a piecing device for piecing a spinning device, with a bundling apparatus for bundling the spinnerets of the spinning apparatus extruded moldings to form a molding bundle.

[0035] The invention therefore has further been the object of improving a piecing apparatus of the aforementioned type in such a way may be simply that the method for piecing the spinning device and reproducibly carried out with little force and.

[0036] The invention solves the problem concerning the piecing by the features of independent claim 13.

[0037] If the piecing a first manipulator arm having a first end effector, a stable spinning device can be provided which allows a simple and reproducible piecing. The piecing can thereby perform machine to the operator of the spinning device to relieve physical and motor particularly piecing the spinning device. As mentioned in the known spinning devices, a large force is necessary to provide the extruded from the spinning nozzles moldings bundle in a draw-off member of the spinning device for piecing, so the operator can be greatly relieved by the comparatively small force required effort in the inventive spinning apparatus. In addition, the spinning device according to the invention can be distinguished by a particularly easy handling and high safety in operation. The handling of the spinning apparatus can be simplified further when the first end effector has a gripper for gripping a molded article bundle. The gripper on the first manipulator arm may be designed such that it capture the molded body bundle reliable and can perform a draw-off member of the spinning device. Such a gripper may be about a mechanical, pneumatic, or adhesive gripper, such as a Einfinger-, two-finger or multi-finger gripper, a suction gripper or, for example, a bed of nails gripper, in. The transport of the molded article bundle from the spinning nozzle to the take-off element can be prepared by displacement of the first manipulator arm, in particular take place along arbitrary trajectories in space. It can of moldings bundle are dispensed In a process for piecing of the spinning apparatus on the comparatively physically strenuous and difficult to reproduce steps of manually threading. This is not only a particular physical relief for the operator of the spinning device, but rather can help to increase security against operating errors of the spinning device to a large degree. A partly or fully automated piecing a spinning device is thus made possible by the inventive piecing. It can of moldings bundle are dispensed In a process for piecing of the spinning apparatus on the comparatively physically strenuous and difficult to reproduce steps of manually threading. This is not only a particular physical relief for the operator of the spinning device, but rather can help to increase security against operating errors of the spinning device to a large degree. A partly or fully automated piecing a spinning device is thus made possible by the inventive piecing. It can of moldings bundle are dispensed In a process for piecing of the spinning apparatus on the comparatively physically strenuous and difficult to reproduce steps of manually threading. This is not only a particular physical relief for the operator of the spinning device, but rather can help to increase security against operating errors of the spinning device to a large degree. A partly or fully automated piecing a spinning device is thus made possible by the inventive piecing.

[0038] In general it is also mentioned, the piecing apparatus according to the invention that particularly preferred for piecing a spinning device for the extrusion of cellulose molded bodies from a spinning solution containing water, cellulose and tertiary amine oxide may be suitable.

[0039] If in addition, the piecing a second manipulator arm having a second end effector, wherein the second end effector having the bundling apparatus, as a particularly flexible piecing device can be provided with a bundling apparatus which bundling apparatus is adapted displaceable thus if necessary between a use position and a rest position , The piecing device can respond flexibly to the requirements of the process accordingly: for example, the bundling apparatus when not in use can be displaced and thus undesirable obstructions are avoided by the bundling apparatus in the spinning device into a rest position. The bundling device is thus switched depending on the process level is between spinnerets and Spinnbadbehälter and extendable.

[0040] A structurally simple bundling device can be also created when it is formed by a spinner. Comprises the rotational device also a rotatable means and is the rotatable means are designed as Torsionmittel to the torsion of the shaped body, as can which can further simplify particularly a method for piecing the spinning device a particularly stable and easy piecing be created for a spinning apparatus. The rotation device with the torsion means may be designed in particular for receiving ends of the extruded moldings of the loose textile curtain, so that the ends of the mold body on the torsion means can be stored and generated a twist of the spin curtain about the rotational movement of the Torsionsmittels.

[0041] The piecing device can be further increased in reliability when the torsion means comprises holding elements for increasing the adhesion between molded articles and torsion means. This particular when the holding elements are designed as hooks.

[0042] If the axis of rotation of Torsionsmittels also substantially parallel to the extrusion direction of the molded body, the torsion means for a reliable and low-stress the torsion of the shaped body can be made to a common point of contact.

[0043] When the torsion means constructed as a turntable, the twist of the extruded moldings can take place in a structurally particularly simple manner. This, when the turntable is in particular formed substantially in parallel to the extrusion direction of the extruded from the spinning nozzle forming body rotatably. In this case, namely, a rotation device for the torsion of the group consisting of extruded moldings loose spin curtain about a torsional axis of the moldings to be created parallel to the extrusion direction which is stable particularly and can reliably produce a compact moldings bundle. The reliability and stability of the spinning device can thus be further increased as a whole. This is especially true

[0044] The handling of the moldings bundle by the piecing device can be further improved if in addition has the piecing a cutting device for cutting the moldings bundle. Particularly preferably, the cutting device may be provided on the first manipulator arm, and in particular with the gripper in such a way be operatively connected to the cutting of the moldings bundle after a successful gripping operation of the gripper takes place automatically.

[0045] The invention has further asked the task of designing a spinning device of the type mentioned reliable and facilitate piecing the spinning device.

[0046] The invention achieves the object by a spinning apparatus for the continuous extrusion of moldings, in particular for the extrusion of cellulose molded bodies from a spinning solution containing water, cellulose and tertiary amine oxide, comprising at least one spinning bath containing Spinnbadbehälter, the Spinnbadbehälter associated spinnerets for extrusion of the molding of the spinnerets in the spinning bath, and a piecing device for piecing of the spinning device according to one of claims 13 to 15 °.

[0047] If also a cooling device for at least region-wise cooling of the extruded shaped bodies, so the spinning device can allow the spinning apparatus, a particularly reliable and reproducible piecing.

Brief Description of Drawings

[0048] Hereinafter, the embodiments of the invention will be described with reference to the drawings. Show it:

Fig. 1 is a partially broken side view of the spinning apparatus of the invention before performing the inventive method for piecing the spinning apparatus according to a first embodiment; FIG. 2 is a schematic representation of the method for piecing, the spinning apparatus according to the first embodiment during a first process step,

Fig. 3 is a schematic representation of the method for piecing, the spinning apparatus according to a second embodiment during a first method step, and

Fig. 4 is a partially broken side view of the spinning apparatus of the invention after completion of the Anspinnverfahrens.

Ways of carrying out the invention

[0049] Referring to FIGS. 1 to 4 are shown spinning devices 1, 101 according to a first and second embodiment of the invention in different stages of the piecing. Fig. 1 shows the spinning device 1 with the loose textile curtain 2 from extruded shaped bodies 3 before the spinning, ie before the moldings were summarized 3 in a bundling device 5 to form a molding bundle 4, as can be seen from FIGS. 2 and 3. The spinning device 1 further comprises a spinning solution 6, which are extruded through a plurality of spinning nozzles 7 to the shaped bodies. 3 The dope 6 is preferably a solution containing water, cellulose and tertiary amine oxide contains a. Below the spinning nozzle 7 is a Spinnbadbehälter 8 is provided, which comprises a spinning bath. 9

[0050] The spinning device 1 also comprises a consolidation device 40 to form the extruded body 3 at least in regions to increase in strength prior to merging into the shaped body bundle. 4 The consolidation device 40 may be, for example, a cooling device 41, which cooling fluid 43 applying to the extruded formed bodies 3 and increases their strength on cooling. Alternatively, or in addition to the cooling of the consolidation device 40 can apply a coagulant to the formed body 3, which precipitates the dissolved in the shaped bodies 3 cellulose and thus also leads to an increase in strength.

[0051] FIG. 3 shows a spinning apparatus 101 is illustrated, alternatively, having a further cooling device 42 as setting device 40. The cooling device 42 generates a cooling air flow 44 which flows over the extruded shaped body 3, and this cools down at least in regions, whereby their resistance is increased.

[0052] The cooling fluid 43 and the cooling air flow 44 to be directed through the respective cooling device 41, 42 on the extruded shaped body 3 and generate the shaped bodies 3 an attack portion 29 with greater strength, in which the mold body 3 is a to at least the 1, 5 have fold higher viscosity than the dope. 6 The engagement area 29 is preferably located in the region of the smallest diameter 28 of the molded body 4 after the beam combining, as shown in FIGS. 2 and 3 can be seen.

turn [0053] Fig. 4 shows the spinning device 1 after piecing. The mold body 3 are thus summarized by the bundling device 5 to form a molding beam 4 and the mold body bundle 4 is continuously conveyed by a draw-off member 10 of the spinning apparatus 1, whereby a continuous extrusion of moldings 3 takes place from the spinning nozzles. 7

is [0054] As shown in Fig. 1 will further be seen to 3, 101 have the spinning devices 1, 101 according to a first and second embodiment of the invention, for performing the method for piecing the spinning apparatus 1, each having a piecing device 1 1 and 51. The piecing 1 1, 51 in turn each comprise a bundling device 5, a first manipulator arm 12 and a second manipulator arm 13. The first manipulator arm 12, a first end effector 14 is provided, which end effector 14 is formed as a gripper sixteenth The gripper 16 is designed such that it can enclose the shaped body bundle 4 and frictionally engage. The gripper 16 is also movable and controllably connected to the first manipulator arm 12th

[0055] As shown in FIGS. 1 and 2 shown, the piecing device 1 1 according to the first embodiment of a rotation device 17 which causes the torsion of the shaped body 3 in the loose form body Curtain 2 and therefore the grouping of the mold body 3 to the mold body bundle 4. For this purpose, the rotation device 17 comprises a rotatable torsion means 18, which preferably is designed as a rotary disc 31, the torsion means 18 and the turntable 31 is provided as a second end effector 15 on the second manipulator arm 13 and takes over the function of stacker. 5 The axis of rotation 19 of the Torsionsmittels 18

and thus the torsion axis 20 of the spinning curtain 2 in particular runs parallel to the extrusion direction 32 of the mold body 3 in the loose spin curtain. 2

[0056] As shown in Fig. 3, has the piecing device 51 according to the second embodiment, a wrapping device 35 which can engage around the mold body 3 in the loose shaped body 2 by means of operation of a loop 36th By contraction of the snare 36, the shaped bodies are combined into the shaped body 3 bundle. 4 The wrapping device 35 is provided as the end effector 15 on the second manipulator arm 13 and takes over the function of stacker. 5

[0057] The respective bundling device 5 of the piecing 1 1 and 51 is by means of the second manipulator arm 13 between the spinning nozzle 7 and the Spinnbadbehälter 8 off and retractable, whereby the bundling apparatus 5 according to requirements from a rest position 21 into an operative position 22 displaced is. Thus, the bundling device 5 can remain in the rest position 21 and 3 constitute an obstacle between the spinning nozzle 7 and 8 Spinnbadbehälter during the continuous extrusion of the molding. Is a renewed piecing of the spinning device 1 is necessary, the focusing device can be displaced into the position of use 5 and 22 allow an inventive piecing.

[0058] The inventive method for piecing, the spinning apparatus 1, 101 is shown schematically in FIGS. 1 to 4. Fig. 1 shows the spinning device 1, or, equivalently, the spinning device 101, in the first method step of piecing. The mold body 3 are extruded as a loose textile curtain 2 from the spinning nozzles. 7 After extrusion, the formed body 3 they will be partially raised by means of a consolidation device 40 at least in their strength. In this case, an engagement portion is provided on the shaped bodies 3 29, can be used in which, after combining the shaped bodies 3, the shaped bodies bundle reliably gripped to the molding bundle 4 by a gripper 16 and manipulated. The increase in the strength of the shaped body is effected via a cooling device 41 or 42,

[0059] In a further step - as the figure 3 is shown schematically in Figure 2 or - bundling device 5, in particular the torsion means 18

and the turntable 31 positioned in the spinning device 1 or the wrapping device 35 at the spinning device 101, between the spinning nozzle 7 and the Spinnbadbehälter 8 that the ends of the extruded moldings can be detected by the bundling device 5 3 23rd

[0060] In the first embodiment in Fig. 2, the shaped bodies ends 23 adhere to the support members 24, and hook 25, the Torsionsmittels 18 formed as a turntable 31 and thus increase the adhesion between the mold body 3 and torsion means 18 so that an undesired sliding the mold body 3 is prevented on the torsion means 18th The torsion means 18 are also added preferably at the start of the process at a standstill, can already before striking the shaped body ends 23 on the torsion means 18 in rotation. After striking the shaped body 23 on the ends of torsion means 18, the rotational speed of the Torsionsmittels 18 is increased as long, until a predetermined final velocity reached. This can for example be stepwise or continuously according to a predetermined acceleration profile. The rotation of the Torsionsmittels 18 of the spinning curtain 2 is the Torsionsache 20 which extends preferably parallel to the extrusion direction 32 of the mold body 3 and through the center of the spinning curtain 2, twisted. Due to the twist of the spin curtain 2, the moldings bundle 4 is preferably provided in the engagement portion 29, in which the mold body was increased in strength. 3

[0061] In the second embodiment in Fig. 3, the mold body ends are passed through the open loop 36 of the wrapping device 35 23. Thereafter, the snare is tightened, and 36 together form the body 3 into the shaped body bundle. 4 The moldings beam 4 is here also provided in the engagement portion 29, the moldings were increased in strength 3 above, in the

[0062] In FIGS. 2 and 3, the spinning apparatus is shown 1 or 101, after the bundling device 5 moves over the second manipulator arm 13 from its rest position 21 in its position of use 22, and this has been positioned between the spinning nozzle 7 and Spinnbadbehälter. 8 The spin curtain 2 was followed as described above in a second step, generated by the bundling device 5, and therefore by the created moldings bundle. 4 Subsequently, the molded body can then bundles 4 in a hood member 10 of the spinning apparatus 1, are provided one hundred and first

[0063] FIG. 4 in this case represents the last process step, wherein the first reliably held by the gripper 16 moldings beam 4 is guided by means of the first manipulator arm 12 by the spin bath 9 is a deflection member 26 in the Spinnbadbehälter. 8 Due to the increased strength of the moldings in the engagement portion 29 on the molded body bundle 4 a reliable manipulation of the molded body beam 4 can take place and a tearing off of individual moldings are 3 avoided during manipulation. Subsequently, the molded body beam 4 is again led out of the Spinnbadbehälter 8 and in the draw-off member 10, which in particular consists of a series string of takeoff godets 27, threaded.

CLAIM

1. A method for piecing a spinning device (1, 101) cellulose dissolved for the continuous extrusion of moldings (3) from a spinning solution (6) containing a solvent and in the solvent, wherein

- the moldings (3) are extruded as a loose textile curtain (2) from the spinning solution (6) through spinneret (7) of the spinning device (1, 101),

- the moldings (3) of the loose textile curtain (2) are combined after the extrusion into a shaped body bundles (4), and

- the tablet bundles (4) to start a trigger member (10) of the spinning device (1, 101) is supplied in a further step to provide a continuous extrusion of the shaped body (3) to,

characterized in that the tensile strength of the shaped body (3) of the loose textile curtain is partially increased (2) after their extrusion and before merging to form a molding bundle (4) at least.

2. The method according to claim 1, characterized in that the tensile strength of the shaped body (3) is increased at least in regions, so that the molded body (3) is substantially not tear under its own weight.

3. The method of claim 1 or 2, characterized in that through the at least partially increase the tensile strength of an engagement area (29) is provided on the molded body bundles (4), in which the shaped body (3) with respect to the spinning solution (6), in particular at least having around the 1, 5-fold increase in viscosity.

4. The method according to any one of claims 1 to 3, characterized in that the grouping of the molded body (3) is carried out to the molded body bundles (4) and / or the feeding of the mold body bundle (4) to the hood member (10) mechanically.

That engages 5. A method according to any one of claims 1 to 4, characterized in that an automated picking means (16), in particular a gripper (16) to a manipulator arm (12), the shaped body bundle (4) and the trigger member (10) of the spinner ( 1, supplying machine 101).

6. The method according to claim 3 and 5, characterized in that the automated picking means (16), the molded body bundles (4) in griffsbe to Reich (29) engages.

7. A method according to any one of claims 1 to 6, characterized in that the moldings (3) are cooled after their extrusion in order to increase their tensile strength.

8. The method according to claim 7, characterized in that the temperature of the mold body (3) after cooling to at least 10 ° C, in particular by at least 20 ° C, is lower than the temperature of the dope (6).

9. The method of claim 7 or 8, characterized in that the cooling of the molded body (3) is effected by at least region-wise blowing a cooling air flow (44).

10. The method of claim 7 or 8, characterized in that the cooling of the molded body (3) is effected by at least region-wise spraying a cooling liquid (43) or by at least region-wise dipping into a cooling liquid (43) and wherein in particular the cooling liquid (43) is an aqueous solution.

1. 1 A method according to claim 10, characterized in that the cooling liquid (43) containing a coagulant for the dissolved cellulose.

12. The method according to any one of claims 1 to 1 1, characterized in that the moldings (3) are combined by one or a combination of more of the following steps machined into the mold body bundles (4):

- torsion of the spin curtain (2) about a torsion axis (20),

- wrapping of the textile curtain (2) with a loop (36) and contracting the loop (36), or

- performing the spin curtain (2) itself by a reducing cross-sectional funnel.

13. A piecing device for piecing a spinning device (1, 101), with a bundling apparatus (5) for bundling from the spinning nozzles (7) of the spinning device (1, 101) extruded moldings (3) to form a molding bundles (4), characterized in that that said first end effector (14) comprising the piecing device (1 1, 51) has a first manipulator arm (12) having a first end effector (14) comprises a gripper (16) for gripping a molded body bundle (4).

That said second end effector (15) 14. A piecing device according to claim 13, characterized in that the piecing device (1 1, 51) has a second manipulator arm (13) having a second end effector (15), the bundling apparatus (5).

15. piecing apparatus according to claim 13 or 14, characterized in that the stacker (5) comprises a rotatable means (18), in particular a turntable (18), which acts as torsion means (17) for the torsion of the shaped body (3) about a torsion axis ( 20 is formed), whereby the moldings are summarized (3) to the mold body bundle (4).

16. Spinning apparatus for the continuous extrusion of moldings (3), particularly for the extrusion of cellulose molded bodies (3) from a spinning solution (6) containing water, cellulose and tertiary amine oxide, comprising at least one spinning bath (9) Spinnbadbehälter containing (8), the Spinnbadbehälter ( 8) associated with the spinnerets (7) for extruding the molded body (3) from the spinnerets (6) in the spinning bath (9) and a piecing device (1 1, 51) for piecing the spinning device (1, 101) according to any one of claims 13 to 15th

17. Spinning apparatus according to claim 16, characterized in that the spinning device (1, 101), a consolidation device (40), in particular a

Having cooling device (41, 42) for at least region-wise increase in the strength of the extruded shaped body (3).