The present invention has for object a process module for a spinning line of laboratory chemical fibre and a spinning line comprising said module. Therefore, the present invention finds particular application in the field of chemical fibres, in particular in the realization of pilot or laboratory lines. The spinning of chemical fibres (synthetic or artificial) is a process that has the aim to produce more or less thick threads or filaments of polymeric material from a "raw" material solution, contained at the liquid/solid state into storage tanks.

The polymeric material can then be extruded in air or in a coagulant solution through a perforated plate and, as it solidifies, pulled by a system of pulleys/rollers which realize the filament also through a succession of treatments such as washing, ironing and drying steps.

Therefore, the design of the spinning line requires the definition of a sequence of individual operations downstream of the extrusion that may vary as a function of the starting material, the type of filament to be obtained or other process parameters; for this reason, it is not always easy to determine beforehand the final structure of the line.

Therefore, at the level of pilot plants/laboratory lines the problem of flexibility is highly felt, as during the stages of line study and testing, it is necessary to make changes to the layout of the line by changing the position of the individual elements and of whole stations in order to obtain the optimal solution which, subsequently, will then be implemented at industrial level and on a larger scale.

To meet this need of the operators, modular lines wherein each module is freely movable as a carrier are currently known.

For example, washing modules with a tank and rollers fastened to it, or transport/ironing modules, each provided with a particular and dedicated roller group (trio, pentet or the like) or even winding modules in which winding rollers are specially positioned and secured, are used.

Therefore, at the time of line testing and design, the operators are used to physically move each module to place it in the correct position with respect to the previous and subsequent ones, possibly by constraining them to one another once the correct position is identified.

Note that if, during the tests, the need emerges to change the line layout, for example by introducing a tank of different dimensions or by varying the number of rollers inside each feed unit, or even by staggering two adjacent stations to allow fibre winding, the operator must use a different module, especially designed.

In fact, taking for example the spinning module, this will be specifically equipped with a tank with a default size in which one or more return rollers are housed, typically placed in default standard positions.

The same reasoning can be carried out also in terms of feed units, wherein a module charging a pentet (five rollers in cascade, ed.) is typically different and separate from those charging a trio or a single roller. Clearly, these system "restraints" introduce concrete difficulties to make changes to the lines and thus in the iterative optimization of the same, especially considering that the modules subsequent to extrusion (washing, ironing, drying etc.) are the most subject to "fine-tuning" changes and adjustments.

Moreover, what should not be underestimated, whenever the laboratory is to assemble a new line, it is necessary to move all components, that is all the modules of the same, with consequent critical issues both from the setup time and from the footprint point of view.

The object of the present invention is therefore to make available a process module for a spinning line of laboratory chemical fibre and a laboratory spinning line able to overcome the drawbacks of prior art mentioned above. In particular, the object of the present invention is to provide a process module for a highly versatile spinning line of laboratory chemical fibres and of simple construction.

In addition, it is an object of the present invention to provide a process module for a spinning line of laboratory chemical fibres which can be easily assembled and modified by an operator.

Furthermore, an object of the present invention is to make available a laboratory spinning line for chemical fibres which is versatile, easy to manage and space-saving.

Said objects are obtained by a process module for a spinning line of laboratory chemical fibre and a laboratory spinning line having the features of one or more of the subsequent claims, and in particular by a washing tank comprising a frame extending along a feed direction of the fibres, at least a washing or ironing tank anchored to the frame and one or more feed members disposed above and/or in part embedded in said tank, provided with rollers rotatable around a rotation axis transverse to said feed direction and support means of said tank and/or said feed members. According to one aspect of the present invention, the frame comprises a longitudinal guide extending along the feed direction and the support means of the tank and/or the feed members are provided with at least a shoe slidingly constrained to said guide to enable the handling and positioning of said tank and/or of said feed members along the feed direction.

Preferably, each shoe is equipped with at least one clamping member switchable between a rest configuration, in which the shoe is freely slidable along the guide, and an operative configuration, preventing the shoe from sliding along said guide by locking its position.

Advantageously, in this way, during the design or modification of the line it is not necessary to perform any movement or replacement of the module, but it is sufficient to move the tank and/or the feed members in the correct position, possibly by anchoring further components (tank, roller or other) to the guide to change the line layout (for example by increasing the number of rollers).

To maximize the flexibility of the module, and therefore of the line, preferably both the tank and the feeding members are maneuvered and positioned relative to the frame along at least two axes:

- a first, longitudinal axis, defined by the movement of the shoe along the guide;

- a second, transverse axis, towards and away from the guide, preferably in horizontal.

To this end, preferably, the support means of the tank comprise a support portion secured to said shoe and projecting away from it transversely to said feed direction, wherein the tank is slidably associated to said support portion to vary its distance from said guide according to the needs of a user and comprises locking means selectively operable to lock the position of said tank on said support portion.

The support portion is, therefore, to all effects a projecting portion projecting from the guide.

Preferably, moreover, the tank is also movable along the vertical, that is presents an adjustable size relative to the frame.

More precisely, the support means of the tank comprise an L-shaped body provided with a substantially vertical abutment portion and attested to a side of said guide. The support portion, substantially horizontal, is connected to the abutment portion and develops away from it.

This support portion is preferably slidingly associated with said abutment portion to vary the size of the tank, wherein stop means are provided, operable to fix the position of the support portion with respect to the abutment portion.

Advantageously, in this way, the position of the tank is adjustable along all three main axes, guaranteeing maximum flexibility to the operator.

In this regard, note that the module advantageously comprises at least a dripping vessel connected to the frame and arranged below the tank. Such a dripping vessel has a surface extension greater than the tank in order to collect any loss of solvent or other liquid contained in said tank at any position assumable by it, both along the feed direction (i.e. along the guide) and transversely to it (that is along the support portion).

Preferably, also the feed members have maximum positioning versatility. In fact, also the support means of the feed members include a shift member slidingly coupled to the respective shoe to move transversely to the main direction and interposed between said shoe and said rollers. Therefore, also the feed members, as well as the tanks, can be positioned in numerous configurations both along the advancement direction and transversely to it.

Moreover, a further advantageous aspect of the present invention is related to the possibility to combine each feed member with others, which allows to obtain any combination of the feed unit according to the operator's needs.

Preferably, in fact, each roller comprises an actuator (preferably a motor reducer), a transmission joint and a roller arranged coaxially along a rotation axis of said cylindrical element, in which the feed member further comprises at least a junction body connected to said transmission or said actuator and removably attachable to the respective support means.

More precisely, it is the transmission joint which comprises a containment body extending around said rotation axis and provided with a plurality of coupling areas with said support means and/or with further feed members angularly spaced from each other around said rotation axis.

Advantageously, the presence of a plurality of angularly spaced coupling areas allows to connect the feed member to the support means as well as to other feed members, thus leaving the maximum freedom of combination to the operator during line design/change.

These and other features and the corresponding advantages will become more apparent from the following exemplary, and therefore non-limiting description, of a preferred, and therefore not exclusive, embodiment of a process module for a spinning line of laboratory chemical fibre and a laboratory spinning line as shown in the following drawing tables, wherein:

- Figures 1 , 1 a, 2 and 3 respectively illustrate a perspective view, a detail, a front view and a side view of a portion of a laboratory spinning line for chemical fibres according to the present invention;

- Figure 4 shows a sectional view according to the line IV-IV of Figure 2;

- Figure 4a shows a detail of Figure 4;

- Figure 5 shows a perspective view of a detail of Figure 1 , with some parts removed in order to highlight others;

- Figure 6 shows a perspective view of a feed member for a spinning line according to the present invention;

- Figure 7 shows a side view of the feed member of Figure 6;

- Figures 8, 9, 10 show sectional views of the feed member according to the lines VIII-VIII, IX-IX and X-X of Figure 7.

With reference to the appended figures, number 1 indicates a process module for a spinning line 100 of chemical fibre according to the present invention.

Note that the expression "chemical fibre" means any fibre, either synthetic or artificial, such as cellulosic, polyolefin, aramid, polyamide, polyester, polyvinyl, polyacrylic fibres, etc.

On the other hand, the expression "spinning line" encompasses any type of spinning line for chemical fibre, with preferential but not exclusive reference to wet spinning lines.

The spinning line 100 includes a plurality of modules disposed in succession along a feed direction "A" of the fibres, including precisely washing and/or ironing modules 1 or other types thereof.

Preferably, but not necessarily, the module 1 is a washing module.

Each module 1 preferably comprises a frame 2 extending along the feed direction "A" between the two end portions 2a, 2b.

Preferably, the end portions 2a, 2b are provided with junction elements 6 adapted to allow the connection with an adjacent module 1 . In the illustrated embodiment, the junction elements 6 are defined by through openings which can be made to face towards a corresponding opening of the module 1 adjacent to and coupled together with respective screws or other known means of connection (e.g. joints, quick couplings, etc.).

The frame 2 therefore comprises a base 3, preferably having a plurality of support elements 3a, and a support structure 4 rising from the base 3. Preferably, support elements 3a are height-adjustable feet, but optionally they may be supplemented or replaced by wheels or rollers to ease the movement of the frame 2.

According to one aspect of the present invention, the frame 2, preferably the support structure 4, comprises a longitudinal guide 5 extending along the feed direction "A".

The guide 5 is thus defined by a rectilinear rail extending along the feed direction "A", preferably with substantial continuity from the first 2a to the second 2b end portion.

Preferably, the support structure 4 comprises at least a pair of struts 4a rising from the base 3, preferably along the vertical, adapted to support the guide 5 at a predetermined level.

The struts 4a are preferably positioned in correspondence of the end portions 2a, 2b of the frame 2.

Therefore, in the preferred embodiment, the through openings of the junction elements 6 are made in the struts 4a.

Note that, preferably, the frame 2 has a development, transversely to the feed direction "A" between a first longitudinal edge, or front edge 2c, and a second longitudinal edge, or rear edge 2d.

In the preferred embodiment, the guide 5 (as well as the structure 4) is located in the proximity of the rear edge 2d, or at least in the proximal area ofthis rear edge 2d with respect to the front edge 2c.

Preferably, the module 1 further includes a tank 7 for washing or ironing anchored to the frame 2, also extending along the feed direction "A" and having a proximal edge 7a of the guide 5 and a distal edge 7b of the guide 5.

Moreover, said module 1 comprises at least one feed member 8 disposed above and/or in part embedded in said tank 4, and provided with at least one roller 9 rotatable about a rotation axis "C" transverse to the feed direction "A".

The feed member 8 has the function of moving (and, when necessary, "ironing") the fibre material along the feed direction, partly embedding it in the tank 7, in turn in use, filled with suitable solvents/solutions.

As will be better clarified in the following, the feed members 8 can be (and often are) more than one, forming the feed units "G" comprising a plurality of rollers 9 arranged in an appropriate manner (trios, pentets or septets). In any case, both the tank 7 and the feed members 8 are connected to the frame 2 by means of suitable support means 10, 1 1 .

According to one aspect of the present invention, both the support means 10 of the tank 7 and the support means 1 1 of the feed member 8 include a shoe 12, 13 slidingly coupled to the guide 5 to allow the movement and positioning of the tank 7 and/or of the body 8 along the feed direction "A". Advantageously, in this way, the operator has the possibility of positioning at will along the feed direction "A" both the tank 7 (or tanks) and the feed member 8 (or the feed members), varying the position also after the line is mounted by a simple sliding along the guide 5.

To this end, note that, in order to allow the fastening of these components after handling, the shoe 12, 13 is equipped with at least one clamping member 14 switchable between a rest configuration, in which the shoe 12,

13 is freely slidable along the guide 5, and an operative configuration, preventing the shoe 12, 13 from sliding along said guide 5 by locking its position.

Preferably, the guide 5 has a substantially T-shaped section, while the shoes 12, 13 are complementarity shaped to it, i.e. substantially C-shaped so as to be clamped to the guide 5 being able to slide without reversal. In the preferred embodiment, each shoe 12, 13 is provided with a plurality of clamping members 14, each preferably defined by a tightening screw that can be tightened in abutment on said guide 5.

In this regard, preferably the shoe 12, 13 has a threaded through opening 15 facing towards the guide 5, preferably facing a top face 5a of the guide 5 and to which the clamping screw is pivotally coupled (or couplable).

More preferably, each shoe 12, 13 includes a plurality of openings 15, one for each clamping member 14.

Advantageously, as the clamping action is performed only by pressure on the guide 5, without engagements on the same, the shoes 12, 13 are positioned continuously at any position along the feed direction "A", increasing the versatility of the module 1 and the line 100.

With reference to the support means 10 of the tank 7, preferably they comprise a plurality of shoes 12 (at least two) associated to a single tank 7 and spaced along the feed direction "A" to ensure stability.

These support means 10 further comprise a support portion 16 bound to each shoe 12 and projecting away from it transversely to the feed direction "A".

Preferably, the support portion 16 (as well as the tank 7) is "frontally" projecting with respect to the guide 5, where "frontally" means approaching the front edge 2c of the frame 2.

Note that, preferably, the tank 7 is slidably attached to the support portion 16 to vary its distance from the guide 5 according to the needs of a user. Furthermore, locking means 16a are provided, selectively activated to lock the position of the tank 7 on the support portion 16.

The locking means are also in this case preferably manual, still more preferably defined by one or more clamping screws.

Therefore, the tank 7 is movable towards and away from the guide 5 between an approached position, in which the proximal edge 7a is in the vicinity of the guide 5, and a withdrawn position, in which the distal edge

7b is in the vicinity of the front edge 2c of the frame 2. Advantageously, in this way, the operator can vary the "transverse" position of the tank 7 without the need to move the frame 2, but simply by "unlocking" the locking means 16a, and translating the tank 7 in sliding on the support portion 16 (in particular on the support portions 16).

This is particularly useful in multi-loop configurations, in which the "pitch" between one winding and the next causes the thread to move transversely to the feed direction "A" and therefore to require, for example, two tanks, a previous and a subsequent, transversely staggered.

Preferably, the support portion 16 is connected to the respective shoe 12 by means of a substantially vertical abutment portion 17 abutted to a side 5b of the guide 5.

More precisely, the abutment portion 17 develops starting from the shoe 12 downwards and the support portion 16, substantially horizontal, is slidably attached to it to vary its portion, i.e. the portion of the tank 7.

In this respect, stop means 18 are provided, operable to fix the position of the support portion 16 with respect to the abutment portion 17, or to ensure the portion of the tank 7.

Even in this case, preferably the stop means 18 comprise at least one screw which can be tightened in abutment to the abutment portion 17. Advantageously, in this way, the position of the tank 7 is also adjustable along a third axis, substantially vertical, allowing maximum flexibility and versatility for the operator.

Preferably, moreover, in order to prevent the movement of the tank to cause spilling of "dangerous" material, such as solvents or other used inside the tanks 7, each module 1 comprises at least a dripping vessel 19 arranged below the tank 7.

Therefore, the dripping vessel 19 is nothing more than a further collection tank positioned below the spinning (or washing) tank 7 and anchored to the frame 2. Preferably, also the dripping vessel 19 is anchored to the support structure 4 and protrudes frontally to it when approaching the front edge 2c of the frame 2.

Advantageously, the dripping vessel 19 has greater surface extension than the tank 7 superposed thereon in order to collect any loss of solvent or other liquid contained in the tank 7 and so as to maintain its usefulness regardless of the positioning of the tank 7.

More in detail, the dripping vessel 19 has a width, transverse to the feed direction "A", corresponding substantially to the distance between the proximal edge 7a of the tank 7 in the approached position and the distal edge 7b of the tank 7 in the removed position.

In other words, the dripping vessel 19 has a width, transverse to the feed direction "A", corresponding substantially to the distance between the rear edge 2d and the front edge 2c of the frame 2.

Note that, to ensure maximum functionality, the dripping vessel 19 is placed at a level which is lower than the minimum height reached by the tank 7, that is below a lower end 17a of the abutment portion 17.

Advantageously, in this way, all of the positions of the tank 7 in the plane are covered by the presence of the dripping vessel 19, the presence of which ensures maximum reliability and maximum cleanliness of the line. Preferably, also, the dripping vessel 19 has concave shape having a bottom portion in which a drain opening 19a is made, in certain cases advantageously placed in fluid connection with a collection tank.

In this regard, also note that the tank 7 of the module is preferably provided with collection tanks 20 of the washing fluid, which preferably accommodate inside them a drain for the overflow and, in certain embodiments, filters and an outlet of the recirculation pump.

With reference to the support means 1 1 of the feed member 8, it is noted that preferably a plurality of feed members 8, that is, a feed unit "G", can be connected to a single support means or to a pair of support means 1 1 . Preferably, such support means 1 1 in turn comprise a shift member 21 , slidably secured to the shoe 13 to move transversally to the main direction "A" and operatively interposed between the shoe 13 and the feed member

8 itself.

Advantageously, in this way, also feed members can be translated and staggered transversely to the feed direction, particularly in multi-loop configurations.

This is extremely advantageous in that the positioning of the feed members is particularly delicate during the design of the line, both for issues of thread "pulling" and for other issues, for which reason the possibility of adjusting the position transversely to the feed direction "A" in a precise manner and without the need to move/physically replace the module results in a decisive advantage.

In the preferred embodiment, the shift member 21 extends transversely to the feed direction "A" between a sliding portion 21 a, coupled to the shoe 13, and a support portion 21 b, on which the feed member 8 is physically constrained.

Therefore, the shift member 21 extends cantilevered from the guide 5, or from the respective shoe 13 in such a way, for example, as to position the feed member above a respective tank 7.

In this respect, the support portion 21 b of the shift member 21 comprises at least one plate 22 provided with junction seats 22a with one or more feed members 8.

These junction seats 22a are preferably openings or holes which can be coupled with the feed member 8 by screws or other reversible connection means of known type.

Preferably, each feed member 8 comprises an actuator 23 (preferably an electric motor reducer), a transmission joint 24 and a roller 9.

More preferably, the actuator 23, the transmission joint 24 and the roller 9 are mutually aligned in succession along the rotation axis "C" of the roller

9 (i.e. transversely to the feed direction "A" of the fibre). The feed member 8 also comprises at least a junction body 25 connected to the transmission joint 24 or the actuator 23 and removably attachable to the respective support means 1 1 , i.e. the support portion 21 b of the shift member 21 , or to a further feed member 8.

To this end, note that the transmission joint 24 comprises at least one containment body 26 extending around said rotation axis "C" and provided with at least one junction portion 26a provided with an outer surface having a plurality of coupling areas 27 angularly spaced from each other around said rotation axis "C".

Such containment body 26 of the transmission joint 24 thus defines the junction body 25.

Note that there is a plurality of coupling areas 27, angularly spaced around the rotation axis "C", allowing to connect the feed member 8 in more points and more components, allowing the operator to "build" the feed unit "G" according to their needs.

Preferably, the coupling areas 27 each comprise a plurality of holes 27a (threaded or not) couplable, by means of respective fastening screws, to a further transmission joint 24 or to a frame 2 of a spinning line.

For example, in the illustrated embodiment, each feed unit "G" comprises a pair of shoes 13 to which respective shift members 21 are associated. On each of the support portion 21 b of the respective shift member 21 a respective feed member 8 is constrained; in other words, the containment body 26 of the transmission joint 24 of such feed members 8 is bound by the junction seats 22a of the plate 22.

Preferably, this constraint is obtained by means of screws.

Such feed members are placed side by side and spaced apart, and a further feed member 8 is positioned above them, interposed between the two (with reference to the feed direction "A") and connected to both by means of the coupling areas 27 of the respective containment bodies 26. Advantageously, therefore, the presence of coupling areas 27 angularly spaced around the rotation axis "C" allows the connection of a feed member both inferiorly to the plate 22, and superiorly to a further feed member 8, thus obtaining, for example, a trio of rollers.

Following the same principle, the operator may in each case transform the trio in a pentet or even a septet, without the need to move modules or replace them, but simply moving the components along the guide 5 and by connecting them through their respective coupling areas 27.

Moreover, taking advantage of a free coupling area (for example upper) of the upper feed member 8, it is possible to connect to it also a further "special" component, such as a presser element 28.

Such presser element 28 comprises a support body 28a fixed to the containment body 26 of the feed member 8, a tilting arm 28b preloaded pivoted to the support body 28a and a roller 28c pivoted to a free end of the arm 28b and opposed (as well as counter-rotating) to the roller 9 of the feed member.

Advantageously, this presser element 28 is useful in wringing the fibre as a result of the washing or to assist the drawing-in of the line 100.

Entering the details of construction of the feed member 8, it is also possible to appreciate the remarkable innovation introduced by it.

This component, in fact, can be used in any station/module of a spinning line, regardless of the presence of a tank or other elements, for which reason it is a further object of the present invention.

In particular, the transmission joint 24, equipped with the above-mentioned coupling areas 27, turns out to be a highly innovative component and advantageous application.

Such transmission joint 24 preferably comprises a shaft 29 extending along the rotation axis "C" of the roller 9 between a first end 29a and a second end 29b.

The first end 29a can be coupled (i.e. is coupled) to the motor reducer 23, while the second end 29b can be coupled to (i.e. is coupled) to the feed roller 9 of the fibre material. The containment body 26 develops around the shaft 29 and is rotatably associated to it; therefore, the shaft can rotate about its own axis with respect to the containment body.

Preferably, the junction portion 26a of the containment body 26 has the shape of a polygonal ring having a plurality of faces 30 which extend around the rotation axis "C".

Each of said faces 30 is externally provided with at least a coupling area 27, i.e. preferably a plurality of holes 27a (threaded or not).

Preferably, the containment body 26 comprises at least an inner casing 31 and at least an outer casing 32.

The inner casing 31 is rotatably coupled with the shaft 29 and coaxial with it.

The outer casing 32 is arranged around the inner casing 31 and defines (at least in part) the junction portion 26a of the containment body 26.

Preferably, therefore, the outer casing 32 has the shape of a polygonal ring; more preferably, it has a quadrilateral conformation, even more preferably squared.

Advantageously, in this way, it is possible to make the feed member versatile and easily placeable, having coupling areas at 90° one from the other, without extremely complicating the structure.

Moreover, the containment body 26 further has connection means 33 operatively (and physically) interposed between the inner casing 31 and the outer casing 32.

These connecting means 33 are configured to allow a variation of the inclination of the inner casing 31 with respect to the outer casing 32.

The expression "variation of the inclination" in this text means defining the possible staggering of the two casings 31 , 32 causing him to lose the coaxial ity.

In other words, the connecting means 33 are configured to allow a relative rotation between the two housings around an axis transverse to the rotation axis "C". Advantageously, this application is particularly useful in multi-loop configurations, wherein at least one of the two winding rollers is tilted relative to each other in order, for example, to vary at will the pitch between the loops.

Therefore, preferably the connecting means 33 comprise at least one pin 33a transverse to the rotation axis "C" and interposed between the shell

31 and the outer casing 32.

Advantageously, in this way, it is possible to change the inclination of the rollers 9 of a same "G" group or of successive groups without acting neither on tanks nor on the module frame.

In this respect, the transmission joint 24 further comprises adjustment means 34 associated with the connecting means 33 and the casings 31 ,

32 and configured to adjust the magnitude of said variation of the inclination.

In this way, once the desired angle is established, the operator can act on the adjustment means to define their position.

In the preferred embodiment, the connecting means 33 comprise a double-hinged junction element 35 to allow the variation of inclination inside the casing 31 with respect to the outer casing 32 around two axes "D, E" (both transverse to the rotation axis "C").

Preferably, the inner casing 31 is inclined with respect to the outer casing of ±10° around each axis.

Advantageously, in this way, the operator has the possibility to adapt the orientation of the rotation axis "C" of the roller both towards/away from the immediately preceding roller and along the orthogonal plane, thus having maximum agility in deciding the layout of station.

Indeed, the operator may decide to maintain a first feed member at "zero inclination", by acting solely on the next, or (although it is a residual case) to act on both the feed members, by calibrating the inclinations of joints 24 accordingly. More precisely, the double-hinged junction element 35 is provided with a first pin 35a, an intermediate body 35b, and a second pin 35c.

The first pin 35a develops along an axis "D" transverse to the rotation axis "A" and is interposed between the outer casing 32 and said intermediate body 35b.

The second pin 35c develops along an axis "E" transverse to the rotation axis "C" and orthogonal to the first pin 35a and interposed between the intermediate body 35b and the inner casing 31 .

The adjustment means 35 comprise a plurality of adjustment elements 37, which can be selectively moved to vary and/or fix the inclination of the inner casing 31 with respect to the outer casing 32.

More precisely, the adjustment elements 37 comprise at least a pair of first elements 37a (or first screws) operatively interposed between said outer casing 32 and said intermediate body 35b, and a pair of second elements 37b (or second screws) operatively interposed between said intermediate body 35b and said inner casing 31 .

In the illustrated embodiment, the line joining the first elements 37a is orthogonal to the first pin 35a, while the line joining the second elements is orthogonal to the second pin 35c.

Preferably, moreover, the intermediate body 35b is defined by a ring 36 disposed around the inner casing 31 and is pivoted both to the outer casing 32 via the first pin 35 and to the inner casing 31 via the second pin 35c.

Moreover, in the illustrated embodiment, the inner casing 31 has a shoulder 31 a (or radial protrusion) facing the ring 36 along the rotation axis "C".

Preferably, the first elements 37a are slidably inserted (via the threaded coupling) each in a seat formed in the outer casing 32 and facing the ring 36 defining the intermediate body 35 to abut on it. Similarly, the second elements 37b are slidably inserted (via the threaded coupling) each in a seat formed in the ring 36 and facing the inner shoulder 31 of the casing 31 a to abut on it.

Advantageously, in this way, by means of simple screws (or the like) the operator can accurately modulate the tilting of the shaft 29 (coaxial to the inner casing 31 ).

Note that the preferred embodiment includes a tilting angle measuring scale or a tilting measurement member (not shown) configured to allow the operator to monitor the angle in real time and with accuracy.

Preferably, moreover, the transmission joint 24 comprises at least a stop element 38 operatively interposed between the outer casing 32 and the inner casing 31.

This stop element 38 is selectively switchable between an active configuration, in which it constrains the inner casing 31 and outer casing 32 to the coaxiality, and a rest configuration, in which it releases the inner casing 31 from the outer casing 32.

Preferably, the stop element 38 is defined by a plug 38a inserted into respective openings 38b of the casings 31 , 32 which, in a condition of coaxiality, are facing each other and displaced from the first pin 35a.

Advantageously, in this way, the condition of coaxiality, which is by far the most used, must not be adjusted by the operator by means of the adjustment means 35, but can be quickly obtained by using the stop element (and loosening/disabling the adjustment means 35).

Moreover, in the preferred embodiment, the coupling also includes hydraulic sealing means 39 interposed between the shaft 29 and the inner casing 31 .

Preferably, the sealing means are defined by a gasket disposed around the shaft, preferably in the vicinity of an end of the inner casing 31 .

Advantageously, in this way, the roller 9 may be immersed in the tank without compromising the reliability of the system. In this respect, it is noted that, preferentially, the feed member 8 comprises a drip guard member 40 placed in proximity of a connection area between the roller 9 and the shaft 29.

Structurally, the drip guard member 40 is defined by a ring 40a having a diameter smaller than the roller 9 and arranged around said shaft 29, in the vicinity of said roller 9.

In the preferred embodiment, the roller 9 also comprises a peripheral collar 41 , of larger diameter than the central portion of the roller 9, which is also placed in proximity of a connection area between the roller 9 and the shaft 29.

The collar 41 thus faces the drip guard member 40.

Preferably, therefore, the roller 9 develops along its rotation axis "C" between a first edge 9a from which the fibre is "loadable", and a second edge 9b, of greater diameter and defining said collar 41 .

Preferably, the drip guard member 40 is spaced from said second edge 9b (along said rotation axis "C") in order to create a collection gap of any immersion liquids of the roller, preventing their propagation along the shaft 29.

Advantageously, in this way, the roller 9 can be immersed, which considerably increases the applicability.

Note that the actuator 23 of the feed member 8 preferably comprises an electric motor and a gear reducer with suitable ratio integrated to it; thus, the actuator 23 is a motor reducer.

Preferably, the actuator 23 comprises a stator 23a and a rotor 23b wherein:

- the stator 23a is constrained to the inner casing 31 of the containment body 26 of the transmission joint 24,

- the rotor 23b is bound (preferably through the reducer) to the first end 29a of the shaft 29.

Advantageously, in this way, the whole structure of the feed member 8

(motor, joint and roller) discharges its own weight on the transmission joint 24, and in particular on the containment body 26, which, being in an intermediate position between the actuator 23 and roller 9, allows to optimize the balance.

The process module 1 as described heretofore is therefore usable within a spinning line 100 for laboratory chemical fibre, preferably a wet spinning line, wherein there is a plurality of modules 1 arranged in succession and aligned along the advancement direction "A" so that the respective guides 5 define a single longitudinal guide beam.

These modules 1 are therefore connected and fastened to each other in correspondence to a peripheral portion (end 2a, 2b) of the respective frames 2, by means of the junction elements 6.

Advantageously, in this way, the frames 2 of the modules 1 define a single frame of the line on which the tanks 7 and the feed units "G" are slidably applicable, which can advantageously also be placed astride two adjacent modules, making the line 100 fully modelled according to the operator's needs.

The invention achieves the intended objects and achieves important advantages.

In fact, the presence of a module provided with a longitudinal guide on which various elements are slidably coupled, including the tanks and the feed members, allows to make the drawing of the line the simple and versatile.

Furthermore, the possibility of moving the tanks and the advancement members (rollers) along the three axes gives the operator maximum freedom in the design of the line, as well as maximum accuracy in "fine- tuning" adjustments during or after testing.

Still, the presence of a complete feed member which can be anchored in various points is highly advantageous in terms of modularity and possibility of combining the elements, which makes it very easy for the operator to build a personalized and customized line according to specific requirements. In this regard, a particular advantage lies in the further possibility to tilt the roller, i.e. its rotation axis, as function of the line layout, generating multiple windings of yarn between two rollers.