ITFI20130127A1 - "A MODULE FOR A MACHINE FOR THE PRODUCTION OF THREAD COILS" - Google Patents

Description

"A MODULE FOR A MACHINE FOR THE PRODUCTION OF WIRE REELS"

DESCRIPTION

Technical Field

The present invention relates to improvements to machines for processing threads and yarns. More specifically, the invention relates to machines for winding wire spools.

State of the art

In the textile sector, in particular in the production of synthetic yarns, the individual yarns are subjected to various processes, which entail the need to unwind semi-finished yarns from dispensing reels and to rewind yarns worked on collection reels. For example, in the production of textured yarns and / or composite yarns comprising a core of elastomeric yarn and a coating in a textured covering yarn, machines equipped with a plurality of winding stations, aligned along one or two fronts of work, which are fed with a yarn to be texturized, which is texturized along the feeding path and then possibly coupled, in an interlacing jet, to an elastomeric yarn, to produce a composite yarn that is wound on individual coils. Machines of this type comprise a large number of winding stations, side by side and aligned along work fronts. Each winding station can comprise one or more collection or winding positions superimposed on each other.

Texturing and interlacing machines for the production of composite yarns are described in EP-1551745, EP-1411014 and EP 1689664. A machine for the production of interlaced yarns with a plurality of overlapping gathering or winding positions in each station winding is described in EP 1448819.

Summary of the invention

The invention concerns improvements to the support structures, and in particular to the skeleton or support frame of machines of this type, to increase their mechanical strength and / or simplify their assembly.

According to advantageous embodiments, a module of a machine for the production of wire reels is provided, comprising a plurality of winding stations aligned with each other on at least one working front, in which:

each winding station comprises at least one feeding zone of a plurality of yarns towards an underlying corresponding plurality of overlapping winding positions;

each winding position comprises a support for a tube on which one of said wires is wound to form a reel, a motorized winding roller in contact with the winding reel, and a zettatore device, to distribute the yarn in helical coils around the reel in training;

The module also comprises: two substantially vertical side panels orthogonal to the direction of alignment of the winding stations; longitudinal beams parallel to the direction of alignment of the winding stations, which join the two lateral sides; and an intermediate vertical structure to aid assembly, arranged between the two side panels. The structure configured in this way allows easy and quick assembly and obtaining a sturdy structure, on which a large number of overlapping collection or winding positions can be assembled, so as to reduce the overall dimensions of the machine.

In practical embodiments, the lateral sides and the intermediate vertical structure are made of metal sheet. Both components can be made in a single piece of cut sheet metal, or in several pieces, for example two pieces, joined together.

The invention also relates to a machine made by assembling together a plurality of modules of the type described above. In some embodiments it can be envisaged that two consecutive modules share a single intermediate lateral vertical flank. In currently embodiments preferably, each module can have two sides and consecutive modules will be placed side by side with the respective two vertical sides side by side. In this way, each module can be fully assembled and subsequently two or more modules can be assembled to form the complete machine.

With the structure of lateral vertical sides and intermediate vertical structures, the advantage of an accurate alignment of the machine shafts is obtained. As will be described hereinafter, in some embodiments the machine can have a very large number of shafts, for example 24 shafts, which extend parallel to the working fronts of the machine. A precision alignment of the shafts on the various modules of the machine reduces both production costs and installation times when consecutive modules of a machine are placed side by side and assembled with a final alignment.

According to some advantageous embodiments, the machine is a texturing machine. In embodiments, the texturing machine comprises supports for reels of starting yarn, for example in the form of one or more creels. Between the supports of the starting yarn reels and the respective winding stations there are advantageously arranged texturizing elements for the yarns fed to the machine. The texturing members can comprise one or more furnaces, one or more cooling zones, one or more torsion or false torsion members, one or more feeding rollers with possible differential control of the peripheral speeds of the rollers placed in series along the path of the respective threads, so as to define areas of tension, or relaxation or combinations thereof. For example, an oven can be provided along the wire feed path, followed by a cooling zone downstream of which a false torsion member is placed. Downstream of this, one, two, three or more motorized feed rollers can be provided, at controlled speed. Each of the feed rollers can advantageously be associated with an idle roll, to define a feed or feed groove for the yarn, each groove being formed by two rollers side by side, one of which is preferably motorized and the other idle. .

Further possible features and embodiments are described below with reference to embodiments of the invention and in the attached claims, which form an integral part of this description.

Brief Description of the Drawings

The invention will be better understood by following the description and the attached drawing, which shows practical non-limiting embodiments of the invention. More specifically, in the drawing they show:

Fig.1 is an overall axonometric view of a machine incorporating the invention;

Fig.2 a cross section along the line II-II of Fig.1; Fig.3 an enlargement of the central part of Fig.2;

Fig.4 is a view along the line IV-IV of Fig.3 of a portion of the machine;

Fig.5 is an enlargement of Fig.4 in correspondence with the elastomer coils;

Figures 6A-6C are axonometric views of the support and replacement system of the elastomer coils in different operating positions;

Fig.7 is a front view of the motorizations on the machine head; Fig.8 is a front view of a side panel of a machine module;

Fig.9 is a front view of a side panel of a machine module in a different embodiment;

Fig. 10 is a front view of an intermediate vertical structure for assembly aid;

Fig. 11 is an axonometric view of the skeleton or supporting structure of a single module of the machine.

Detailed Description of Forms of Implementation of the Invention

The following detailed description of exemplary embodiments refers to the accompanying drawings. The same reference numerals in different drawings identify the same or similar elements. Also, the drawings are not necessarily to scale. The detailed description that follows does not limit the invention. Rather, the scope of the invention is defined by the attached claims.

Reference throughout the description to "an embodiment" or "the embodiment" or "some embodiment" means that a particular feature, structure or element described in connection with an embodiment is included in at least one embodiment of realization of the described object. Therefore the phrase "in an embodiment" or "in the embodiment" or "in some embodiment" at various points along the description does not necessarily refer to the same or the same embodiments. Furthermore, the particular features, structures or elements can be combined in any suitable way in one or more embodiments.

Fig.1 shows a schematic and simplified axonometric view of a machine according to the invention in a possible embodiment. The machine is indicated as a whole with 1 and has a plurality of winding stations as a whole and schematically indicated with 3, aligned according to an alignment direction A, along which the machine 1 extends. In advantageous embodiments, the machine has two working fronts 3A, 3B, arranged on opposite sides of the longitudinal extension of the machine and on each of which there is a series of winding stations, the two series being substantially symmetrical with respect to a median plane. In some embodiments, an electrical cabinet 5 is provided at the head of the machine 1, in which electrical and electronic logic, control and power devices, not described in greater detail, can be housed, as well as the motors for controlling the shafts. of the machine, as described in greater detail below.

In front of each front 3A, 3B of the machine there are respective series of creels indicated with 7A and 7B respectively in Fig.1. The creels 7A, 7B comprise, in a per se known manner, supports for bobbins of a starting yarn or yarn which must be worked and wound, possibly forming a composite yarn consisting of a covering yarn and a yarn of elastomeric material.

Between the creels 7A, 7B and the winding stations 3 aligned according to the work fronts 3A, 3B, feed paths 9A, 9B are advantageously provided for the yarns unwound from the reels which are located in the creels 7A, 7B and which are fed to the working members of the machine 1, described in greater detail below.

Fig.2 shows a section along the line II-II of Fig.1 of the machine 1 in a possible embodiment. In the example illustrated, the creels 7A, 7B comprise a plurality of carriages 8A, 8B movable according to the double arrow f8 to allow them to be easily moved with respect to a vertical median plane of track P-P of the machine 1. B1 indicates the wire spools or starting yarn, mounted on creels 7A, 7B and whose yarn F1 is intended to be worked in machine 1.

The yarns F1 coming from the coils B1 of the creels 7A, 7B are fed to respective feed rolls 11, 13, arranged above the creels 7A, 7B and from which the yarns coming from the reels B1 are fed into texturizing ovens 13A, 13B which are found along the paths 9A, 9B of the wire (Fig. 1)

In some embodiments the ovens 13A, 13B are arranged inclined from the bottom upwards and from the creels towards the work fronts, indicated with 3A and 3B respectively in Fig.2. Downstream of the ovens 13A, 13B, cooling and / or yarn guiding surfaces can be placed, before reaching a stretching and / or false torsion area, as described below.

Fig.3 shows an enlargement of the central area of the machine. In this figure, the main components of a single winding station are visible in a section along a vertical plane orthogonal to the direction of alignment A of the winding stations. Fig.4 shows a front view of one of the work fronts 3A, 3B limited to a part of the winding stations. In advantageous embodiments, the stations of the machine 1 are divided into modules, each of which comprises a certain number of winding stations, each in turn comprising a certain number of winding positions on each front 3A, 3B of the machine. 1. As shown in particular in Fig.4, the single module of the machine 1 comprises four winding stations 1A aligned along the direction A.

In Fig.3, for each working front 3A, 3B the path of each of a plurality of threads F1 coming from the respective creel 7A, 7B is shown. In some embodiments, each winding station 1A of the machine 1 comprises a feeding area 15 where the threads F1 coming from the creels 7A, 7B pass to be fed towards an underlying plurality of winding positions 17.

As mentioned above in the embodiment illustrated in each winding station 1A there are four winding positions 17 superimposed on each other and indicated with 17A, 17B, 17C and 17D, respectively, starting from the highest to the lowest.

In the embodiment illustrated in Fig. 3 and in Fig. 4, as will be better clarified hereinafter, four composite wires FC are fed from the feeding area 15 towards the four underlying winding positions 17A-17D, each composite wire FC being constituted by combining one of the respective four starting yarns F1 coming from creels 7A, 7B with a corresponding elastomeric yarn F2. The elastomeric yarns are fed, parallel to the yarns F1, by respective coils of elastomeric yarn indicated with B2 and housed in the feeding area 15 of each station 1A. See also the enlargement of Fig.5

In the illustrated embodiment, since each winding station 1A comprises four overlapping winding positions 17A-17D, four coils B2 are provided in each winding station 1A for the parallel feeding of four elastomeric yarns F2 which are coated, in the manner hereinafter described, by means of corresponding four covering threads F1.

In each winding station 1A so-called false torsion groups 19 are provided, arranged in the upper part of the feeding area 15. The false torsion groups 19 are known per se and will not be described in detail here. Advantageously, the number of false twist units 19 for each winding station 1A is equal to the number of yarns F1 fed by the respective creel 7A, 7B towards the working front of the machine 1.

In the feeding area 15 there are also guide rollers 21, one for each wire F1, which divert the wires F1 towards respective pairs of feeding rollers 23, 25. In some embodiments the roller 23 is motorized, while the roller 25 it's crazy. In Fig. 3 the two rollers 23, 25 are drawn spaced apart, but it must be understood that during the actual operation of the machine 1 the distance between the rollers 23, 25 is such that the two rollers are in mutual contact and form a groove through which the thread F1 passes, which is clamped between the rollers 23, 25. In this way, the controlled rotation of the motorized roller 23 causes the feeding of the thread (s) F1 towards the underlying members. The rollers 23 and 25 can have an axial development such as to engage a single F1 wire, as in the example shown (Fig.4). In this way each wire F1 is clamped and dragged by a respective pair of rollers 23, 25. The rollers 23 can advantageously be keyed onto a common motor shaft 23A, while the rollers 25 can be supported one independently from the other on spindles autonomous.

The possibility of using rollers 23 and / or 25 of larger axial dimension is not excluded, so that a single pair of rollers 23, 25 (or a roller 23 and a plurality of rollers 25, or a single roller 25 and a plurality of rollers 23) engage several wires F1 fed in parallel.

As can be seen in particular in Fig.3, each wire F1 follows an almost vertical path from the pair of feed rollers 23, 25 towards a further pair of rollers 27, 29 at a lower level than the pair of rollers 23, 25. Advantageously one of the rollers 27, 29, for example the roller 27, is motorized, while the other, for example the roller 29, is idle. In Fig. 3 the rollers 27, 29 are shown spaced apart, but it must be understood that during the actual operation of the machine the rollers 27, 29 are placed side by side so that the wire F1 is clamped between the rollers 27, 29 and driven by the rotation of the roller 27. 27A indicates a common drive shaft on which the motorized rollers 27 can be mounted.

Downstream of the pair of rollers 27, 29 develops a path along which the wire F1 advances together with an elastomeric wire F2 fed by the corresponding reel B2.

In each winding station 1A comprising four winding positions 17A-17D there are, as mentioned above, four bobbins B2 of elastomeric thread, supported by respective supports 20, which will be described in greater detail below with specific reference to Figs 6A -6C. Each support 20 can hold the respective coil B2 of elastomeric thread F2 in contact with a motorized unwinding roller 22. As will be clarified later, each support 20 can be movable to move the reel B2 away from the motorized unwinding roller 22 and to carry out operations to remove the exhausted reel B2 and replace it with a new reel B2 of elastomeric thread F2, or to perform other operations. .

The unwinding rollers 22 associated with the coils B2 of elastomeric thread F2 can be mounted on a common drive shaft 22A.

In the embodiment illustrated in Fig.3, the parallel path of the threads F1 and F2 passes through a so-called interlacing jet 31, where in a per se known manner the elastomeric thread F2 is covered by the covering thread F1. The latter can in practice be constituted, for example, by a plurality of burrs with a micrometric cross section. Passing through the interlacing jet 31, the burrs forming the covering yarn F1 wrap around the elastomeric yarn F2 in a more or less regular way.

At the outlet of the interlacing jet 31 there is therefore a composite yarn FC consisting of the combination of the elastomeric yarn F2 coated with the covering yarn F1.

Downstream of the interlacing jet 31, for each composite yarn FC a yarn guide may be provided, for example made of ceramic 33, through which the composite yarn FC passes. Downstream of the wire guide 33 the path of the composite wire FC develops through a groove formed between a further pair of rollers 35 and 37. In some embodiments the roller 35 can be motorized and the roller 37 can be idle. The rollers 35 can be mounted on a common drive shaft 35. The idle rollers 37 can be supported independently of each other.

In the schematic representation of Fig.3 the rollers 35 and 37 are shown spaced apart, with a greater distance between centers than the actual one during the operation of the machine. In reality, during actual operation, rollers 35 and 37 are placed side by side to form a feed groove for the FC composite wire. The latter, clamped between the rollers 35 and 37, is dragged by the rotation of the motorized roller 35 and subsequently advances along a path that can develop for example through further yarn guides 38 and 39. In a per se known way between the yarn guides 38 and 39 a wire oiling system can be provided.

The four winding positions 17A-17D are arranged at a lower level than the interlacing jet 31 and the pair of rollers 35, 37, one superimposed on the other. The path of the four FC composite wires, which feed the four superimposed winding positions 17A-17D, develops from the respective pair of rollers 35, 37 downwards so that at each winding position 17A-17D one of the four composite wires is fed FCs formed in each winding station 1A. In the diagram of Fig. 3 the four composite wires FC fed to the four winding positions 17A-17D are indicated with FC <A>, FC <B>, FC <C> and FC <D> respectively.

In some embodiments, each winding position 17A-17D can comprise a support 41 for a respective winding tube T, on which coils B3 of composite wire FC are formed. In some embodiments, the winding movement according to the arrow fB3 is imparted to the respective reel B3 by a corresponding winding roller 43 provided in each winding position 17A-17D. In Fig. 3, the supports 41 of the four winding positions 17A-17D are marked with the reference 41A-41D and similarly the motorized winding rolls are indicated with 43A-43D for the four winding positions 17A-17D.

In the condition illustrated in Fig.3 each support 41A-41D is positioned so as to support the respective reel B3 at a higher level than the respective motorized roller 43A-43D. During the actual winding of the composite wire FC, however, the position of the supports 41A-41D is such that the external surface of the reel B3 being formed is kept in contact with the respective motorized winding roller 43A-43D and pressed against it. In this way the reel in formation B3 is kept in rotation due to the friction between the respective motorized winding roller 43A-43D and the external surface, initially of the tube T and then of the reel B3 in formation.

Each winding position 17A-17D can advantageously comprise a separating device which serves to distribute the wire FC uniformly along the axial development of the respective bobbin B3, imparting to the wire itself during winding an alternating movement parallel to the winding axis of the tube T. The zettatore device is generally and schematically indicated with 45A-45D for the four winding positions 17A-17D which are located on each working front of the machine 1 at each winding station 1A.

In advantageous embodiments, the motorized rotating members described up to now of each front 3A, 3B of the machine 1 can be driven by continuous shafts which extend from one to the other of the two opposite heads of the machine 1. By continuous shafts we mean members mechanical which can also consist of several portions, pieces or parts connected to each other by means of suitable joints, but which are advantageously and preferably rotated by a single motor for each shaft, placed in correspondence with the head 5.

In practice, the motorized rotating members located along each working face 3A, 3B of the machine 1 are the following: the feeding rollers 23 of the covering threads F1; the feed rolls 27 of the covering yarns F1 in parallel with the elastomeric yarns F2; the motorized feed rollers 35 for the composite yarns FC; the unwinding rollers 22 of the elastomeric yarns F2; the motorized winding rollers 43A-43D of the four collection or winding positions 17A-17D; and finally the four drive shafts of the zettatore assemblies 45A-45D of the four superimposed winding positions on each working front 3A, 3B. Fig.7 shows a possible and advantageous arrangement of electric motors on the head 5 of the machine 1 for driving the motorized rotating members mentioned above.

More specifically, with reference to Fig. 7, for each front 3A, 3B of the machine 1 a first electric motor 51 is provided to control the rotation of the common shaft 23A, on which the motorized rollers 23 for feeding the wire are keyed. F1 coverage.

Advantageously, under the motor 51 a further motor 53 can be provided for the rotation of the motor shaft 22A on which the rollers 22 for unwinding the elastomer coils B2 are keyed.

The shaft 27A on which the feed rollers 27 are keyed can be rotated by a third motor 55.

Advantageously, in some embodiments a fourth motor 57 rotates the rollers 35 keyed on the shaft 35A.

In this way it is possible to independently control the rotation speed of the feed rollers 23, 27 and 35, as well as the unwinder roll 22.

The motorized winding rollers 43-43D of the four winding positions 17A-17D on each front 3A, 3B of the machine 1 can be advantageously driven by a pair of motors, each of which rotates two drive shafts of the winding rollers of two positions of adjacent windings. In some embodiments, a motor 59 rotates shafts 61 and 63 on which the winding rolls 43A and 43B of the winding positions 17A and 17B are keyed. Advantageously, in some embodiments a continuous flexible member can be provided, for example a belt, preferably a toothed belt 65, which transmits the movement from the common motor 59 to the two substantially parallel shafts 61 and 63, so that the series of winding rollers motorized motors 43A and 43B rotate substantially synchronously.

A further motor 67, placed under the motor 59, can be provided to rotate shafts 69 and 71 on which the motorized winding rollers 43C and 43D respectively are keyed. A continuous flexible member, for example a toothed belt 73, can transmit the movement from the motor 67 to the two shafts 69 and 71. In this way, a synchronous rotation of the motorized winding rollers 43C and 43D of the winding positions 17C and 17D is obtained.

In advantageous embodiments, a further motor 75 rotates a shaft 77 which controls the zetters 45A of the first winding position 17A, and a second shaft 79 for actuating the zetters 45B of the second winding position 17B. A flexible member, for example a toothed belt 81 transmits the motion from the motor 75 to the drive shafts 77, 79 of the zetters 45A, 45B. The latter are therefore controlled synchronously by the common motor 75.

Similarly, a further motor 83 can be provided to rotate a shaft 85 for actuating the zetters 45C of the winding positions 17C and a shaft 87 for operating the zetters 45D for the winding positions 17D. A continuous flexible member, for example a toothed belt 89 can be provided to synchronously drive the drive shafts 85 and 87 so that the zetters 45C and 45D are driven synchronously.

In practice, in this advantageous embodiment the winding positions 17A-17D are divided into two groups, comprising respectively the winding positions 17A, 17B and the winding positions 17C, 17D. Each pair of winding position alignments includes independent drive motors with respect to those of the other pair of winding position alignments. The motors 59, 75 drive the movable members (winding and tripping rollers) of the winding positions 17A, 17B, while the motors 67 and 83 operate the movable members (winding and tripping rollers) of the winding positions 17C, 17D.

The motors 59, 75 can be controlled independently with respect to the motors 67, 83, so as to be able to take into account the fact that the feeding paths of the composite wires FC from the groove defined by the rollers 35, 37 up to the respective winding reel B3 have lengths strongly depending on the height at which the respective winding coils B3 are arranged. By acting independently on the motors 59, 75 and on the motors 67, 83 it is possible to compensate for variations in the feeding conditions of the wires FC so as to obtain coils B3 substantially equal to each other despite the different length of the feeding paths. In practice it is possible to modify the rotation speed of the winding rollers 43C, 43D with respect to the rotation speed of the winding rollers 43A, 43B and also the speed of the reciprocating movement of the zetters 45C, 45D with respect to the corresponding speed of the zetters 45A, 45B. The speed variation can compensate for the different supply voltage generated along the paths of variable length of the threads FC from the groove between the rollers 35, 37 and the winding point on the respective coils B3.

The use of independent motors for the two superimposed pairs of collection groups allows for further advantages. In particular, the machine configured in this way allows to work feeding two wires in parallel along two separate paths and to collect them on a single final reel B3. Therefore, in each section comprising four collection groups and four wire paths, all four paths will be used but only two collection groups for the formation of two coils in parallel, on each of which two wires are wound. When the machine works in this way, one of the two motors and all the parts it controls can remain stationary.

According to advantageous embodiments, in order to make the arrangement of the coils B2 of elastomeric yarn F2 more compact, particular expedients are provided in the configuration of the supports 20 of these coils B2. In fact, it is advisable that the coils B2 of elastomeric yarn F2 are all arranged at the same height, to avoid differences in the conditions of feeding the various elastomeric yarns F2 to the interlacing jets 31. To this end, the supports 20 must be configured in such a way that in a space corresponding to the axial dimension of a collecting coil B3 four elastomer coils B2 are arranged. In this way the coils of elastomeric yarn F2 can be placed substantially coaxial with each other and therefore substantially identical paths can be defined for each of the four elastomeric yarns F2 which are fed to the four underlying collection positions, to the advantage of the uniformity of the production conditions of the various B3 coils of FC composite wire.

In order to allow easy handling of the B2 elastomeric yarn bobbins in the steps of replacing exhausted bobbins with new bobbins and also for example in the event of accidental breakage of the elastomeric yarn with the need to restore the power supply, in some embodiments a particular conformation of the supports 20 in Fig.3. More structural and functional details of an embodiment of the supports 20 will now be described with specific reference to Figs 6A-6C, which show a portion of the area in which the supports 20 are arranged in an axonometric view and in different operating positions.

In some embodiments, each support 20 comprises an arm 91 constrained to a fixed structure 93 of the machine 1. Advantageously, each arm 91 can be hinged in 91A to the structure 93 and can be provided with a movement of limited oscillation according to the double arrow f91 around the fulcrum 91A.

Figures 6A and 6B show by way of example the arms 91 in two different angular positions. In Fig.6A the arms 91 are placed in an angular position such that the external surface of the respective bobbin B2 of elastomeric yarn F2 is in contact with the external cylindrical surface of the unwinding roller 22. In this condition, the rotation of the unwinding roller 22 causes friction the unwinding rotation of the reel B2. It should be understood that the position in which the arm 91 is, when the reel B2 is in contact with the unwinding roller 22, varies as a function of the diameter of the reel B2. As the diameter of this reel is reduced due to the consumption of the elastomeric thread F2, the arm 91 rotates, that is, it swings downwards due to the effect of gravity, maintaining contact between the external surface of the reel B2 and the external surface of the roller. unwinder 22.

Fig.6B shows a maximum lifting position of the arms 91 of the supports 20 of the coils B2 of elastomeric thread F2. In this position, a core or flange A2 of the respective bobbin B2 of elastomeric yarn F2 abuts against a respective brake 95 carried by a respective bracket 97 locked on the fixed structure 93 of the machine, preferably in an angular position which can be adjusted for example through a screw 99 and a slot 100. The adjustment of the angular position of the bracket 97 allows to adapt the position of the brake 95 to the diametrical dimension of the flange or core A2 of the coil B2 of elastomeric wire F2.

In the position of Fig.6B, pressing the flange or core A2 of the coil B2 against the brake 95 stops the rotation of the coil B2, for example when it must be replaced because it is exhausted, or to carry out an intervention, for example for restoring of the elastomeric yarn feed following a break.

In some embodiments, the upward swinging movement of each arm 91 can be imparted by a respective actuator 103, for example a pneumatic or hydraulic cylinder-piston actuator. The gradual lowering motion to follow the reduction of the coil diameter can be achieved by simple gravity.

In advantageous embodiments, each arm 91 of each support 20 carries an extractable element 105 which carries a support member of a respective coil B2, for example a tang or the like. The extractable element 105 can be advantageously equipped with a gripping handle 105M, constrained to a stem or rod 105A, at the opposite end of the handle 105M a tang 105C or other engagement member of the coil B2 of elastomeric thread F2 is constrained.

The extractable element 105 can advantageously be guided in a guide 91G which can be provided in the arm 91. In some embodiments each extractable element 105 can move in a direction substantially parallel to the extension of the arm 91 according to the double arrow f105 to assume alternatively a retracted position as shown in Figs.6A and 6B and an extracted position as shown in Fig.6C for one of the arms illustrated therein. In the movement according to the double arrow f105, the removable element 105 carries the B2 coil with it. The latter can then be translated until it moves with its axis out of the encumbrance of the other B2 reels placed one coaxially to the other in their respective unwinding positions. In Fig.6C it can be observed how the extraction of one of the extractable elements 105 causes a misalignment of the axes of the coils B2 facing each other, so that the coil B2 which is in a position further away from the fulcrum 91A of the arm 91 can be removed with a movement parallel to its own axis from the support 20, without interfering with the adjacent coil.

This configuration allows to arrange pairs of reels B2 in unwinding position very close to each other in the axial direction, as can be seen in Fig. 4. The distance in the axial direction between the coils B2 of each pair is less than that which would be necessary to allow the removal and insertion of a coil with only axial movement, without interference with the opposing coil. These movements are obtained by moving each coil B2 according to the direction f105 by means of the extractable element 105 until it is taken out of the encumbrance of the coaxial coils which remain in their original position. Once the extraction movement has been performed, the coil extracted according to f105 can be removed with a movement parallel to its axis and replaced with a new B2 coil.

From what has been illustrated above, it can be understood that the overall structure of the machine 1 is configured in such a way as to concentrate a large number of components in restricted spaces, with overlapping of multiple unwinding and winding members so as to occupy a limited space in plan. This involves considerable difficulties in the realization of the supporting structure of the machine. According to advantageous embodiments, the assembly of the supporting structure is facilitated by adopting a particular configuration of the respective carpentry that forms the frame of the machine. Figs 8 to 11 show relevant components of the skeleton of a single module forming part of machine 1.

In some embodiments a module of the machine 1 comprises two lateral sides which, when assembled, are arranged vertically and which can each be configured as indicated in Fig.8 or in Fig.9. Two adjacent modules of the machine 1 can have an intermediate side in common. Preferably, each module will have two respective sides which are arranged side by side when the modules are mounted in sequence. The total number of vertical side panels of the machine therefore depends on the total number of modules that make up the machine 1.

In Figs.8 and 9 the side panel is indicated with 111. In advantageous embodiments, the side panel 111 is made of metal sheet. In Fig.8 the side panel 111 is formed by two parts, respectively an upper part 111A and a lower part 111B, joined together along an interface I. In other embodiments, as shown for example in Fig.9, the side 111 can be made of a single continuous sheet. In the embodiment illustrated in Fig. 3, continuous vertical side panels 111 are used, i.e. made in a single piece, of the type shown in Fig. 9

The side panel 111 may have openings or slots 113, 115, 117 which have the function of both lightening and passage of the drive shafts of the rotating members described above.

In some embodiments, the lateral sides 111 have arms 121 on both sides. As can be seen in particular also from Fig. 3, in correspondence with the arms 121 the zettering units 45A-45D of the four winding positions 17A-17D can be mounted .

Along the lower edge 111B of the sides 111, recesses 111C can be provided in which the ends of longitudinal beams 125 are inserted, which extend parallel to the alignment direction A of the winding stations 1A of the machine 1 and which join the vertical lateral sides 111.

Each vertical side panel 111 can be equipped with feet 127 for resting on the floor. In Fig.11 the skeleton of a single module of the machine 1 is represented with four support feet. As can be seen in Fig.3, two vertical lateral sides 111 placed side by side and belonging to two consecutive modules of the machine 1 advantageously have staggered feet, to prevent the feet of one side from interfering with those of the adjacent side.

The two adjacent vertical lateral sides 111 that delimit the portion of the frame illustrated in Fig. 11 can be joined, in addition to the two lower horizontal beams 125, by two crossed tie rods 129.

In some embodiments, horizontal longitudinal elements 131 can be arranged between the lateral vertical sides 111, constrained at their ends to the two respective lateral vertical sides 111. Advantageously, a number of longitudinal elements can be provided on each working front 3A, 3B of the machine 1 horizontal 131 equal to the number of levels at which the winding positions 17A-17D are arranged. In the example illustrated, therefore, the skeleton of a single module has eight horizontal longitudinal elements 131, four for each front. The longitudinal elements 131 are advantageously used for assembling the supports 41A-41D of the winding reels B3 of the various winding positions 17A-17D placed on the two working fronts 3A, 3B of the machine 1.

In advantageous embodiments, in order to facilitate the assembly of the frame of each module of the machine 1 and to support the weight of the members of the winding positions, an intermediate vertical structure 135 can be placed between the two vertical lateral sides 111. assembly aid. One of these intermediate vertical structures 135 to aid assembly is shown separately in Fig. 10. In some embodiments the intermediate vertical assembly aid structure 135 can be made of metal sheet, similarly to the sides 111. In some embodiments the intermediate vertical assembly aid structure 135 can have a plurality of lateral arms 135A . In the illustrated embodiment, four lateral arms 135A are provided on each side of the intermediate vertical assembly aid structure 135. In practice, the number of lateral arms 135A on each side of the intermediate vertical assembly aid structure 135 can be equal to the number of winding positions 17A-17D on each working front of the machine 1.

The lower arms 135A also serve to constrain the intermediate vertical structure of assembly aid 135 to the longitudinal beams 125.

Advantageously, each arm 135A of the intermediate vertical assembly aid structure 135 can serve as a constraint for a respective longitudinal element 131, simplifying and facilitating the assembly of the components of the machine frame as well as of the mechanical members supported by said frame and stiffening the horizontal longitudinal elements 131 which support a considerable weight, represented by the coils B3 being wound and by the relative supports.

In the embodiment described with reference to the attached drawings, the machine comprises a texturing, false torsion and drafting system (ovens 13A, 13B, false torsion units 19 and feed rollers) and is configured to produce a composite yarn FC obtained from the combination of an elastomeric thread and a cover thread. For this purpose the supports 20 are provided for the coils B2 of elastomeric yarn F2 and the interlacing jets. In other embodiments, the machine can have a simpler configuration, with only means for texturing, stretching and false torsion, but without the feeding of elastomeric threads F2. In this case the supports 20 and the unwinding rollers 22 can be omitted. The interlacing jets can be maintained to treat the textured F1 yarn with a jet of air that increases its bulk. In other embodiments, the machine can also be without an interlacing jet. In this case, the individual yarns F1 are texturized by passing through the ovens 9A, 9B and subjected to false torsion and drawing before being wound on reels B3.

In other embodiments, it is possible to arrange the coils of elastomeric yarn B2 and the relative feeding members in the area of the creels 7A, 7B.

It is understood that the drawing shows only an exemplification given only as a practical demonstration of the invention, which can vary in the forms and arrangements without however departing from the scope of the concept underlying the invention. The presence of any reference numbers in the attached claims has the purpose of facilitating the reading of the claims with reference to the description and the drawing, and does not limit the scope of protection represented by the claims.

Claims (13)

"A MODULE FOR A MACHINE FOR THE PRODUCTION OF WIRE REELS" CLAIMS 1. A module of a machine for the production of wire spools, comprising a plurality of winding stations aligned with each other on at least one working front, in which: each winding station comprises at least one feeding zone of a plurality of yarns towards an underlying corresponding plurality of winding positions superimposed on each other; each winding position comprises a support for a tube on which one of said wires is wound to form a reel, a motorized winding roller in contact with the winding reel, and a zettatore device, to distribute the yarn in helical coils around the reel in training; characterized in that it comprises: two substantially vertical side panels orthogonal to the direction of alignment of the winding stations; longitudinal beams parallel to the direction of alignment of the winding stations, which join the two lateral sides; and an intermediate vertical structure to aid assembly, arranged between the two side panels. 2. Module as per claim 1, characterized in that it comprises two opposite work fronts. 3. Module as per claim 1 or 2, characterized in that the intermediate vertical structure and the sides are made of sheet metal. 4. Module as per claim 1 or 2 or 3, characterized by the fact that the lateral sides carry feet to rest on the floor and the intermediate vertical structure is mounted on the longitudinal beams. 5. Module as per claim 4, characterized in that the longitudinal beams are constrained to the lower edges of the lateral sides. 6. Module according to one or more of the preceding claims, characterized in that each side panel is formed by at least two portions overlapping and constrained in a coplanar arrangement. 7. Module according to one or more of the preceding claims, characterized in that each of said lateral sides has arms for supporting yarn feeding and winding members. 8. Module as per claim 7, characterized in that it comprises a plurality of longitudinal connection elements, extending between the two lateral sides and connected thereto, along each of which wire winding groups are arranged. 9. Module as per claim 8, characterized in that said longitudinal connection elements are arranged between respective support arms made on the lateral sides. 10. Module as per claim 8 or 9, characterized in that each of said connection elements supports a plurality of supports for pipes on which respective wires are wound to form said coils. 11. A machine for the production of coils of thread comprising a plurality of modules according to one or more of the preceding claims, aligned with each other. 12. Machine as per claim 11, characterized in that it comprises elements for texturing the yarn. 13. Machine as per claim 12, characterized in that said yarn texturizing members comprise one or more of the following members: heating furnaces; cooling organs; torsion groups or false torsion; motorized stretching or relaxation rollers.