DESC:TECHNICAL FIELD

The present disclosure generally relates to the field of textile machinery. Particularly, but not exclusively, the present disclosure relates to a roving frame machine. Further embodiments of the present disclosure disclose a drafting roller assembly with a drive arrangement for the roving frame machine.

BACKGROUND OF THE DISCLOSURE

In the textile industry, roving frame machines are commercially termed as fly frame or speed frame. The roving frame machines are used to produce roving package from a feed sliver. Sliver is an outcome product of the preceding preparatory machine which is generally a draw frame. The sliver delivered from the draw frame machine is stored in a sliver can and being sent to successive speed frame machine for further processing.

Generally, a plurality of such sliver cans will be arranged below a creel of the speed frame, and the slivers are fed through the creel guide rollers into the drafting unit of the speed frame machine. Here the feed sliver's linear density may be reduced to the required amount by giving a draft, and to covert as a fibre band of smaller diameter than the feed sliver. After drafting, the fibre band is given a false twist, and it is successively passed through the false twister of the flyer device. The flyer device normally rotates at a speed of more than 1200 rpm. A spindle is drivingly associated with the flyer device, which holds the empty tube for winding the twisted fibre band on it. This twisted fibre band is generally termed as roving and the whole package is called as roving package or roving bobbin. The roving bobbin is a feed material to the successive ring spinning machine where the roving is converted into yarn.

Conventionally, the textile roving frame machines comprises a drafting arrangement for imparting a required amount of draft on the feed sliver material before transforming into roving. The conventional drafting arrangement generally comprises three-over-three or four-over-four drafting rollers and these drafting rollers in a roving frame machine are arranged such that it comprises three or four rows of rollers extending along the entire length of the machine and are supported in bearings at spaced intervals. These rollers of the drafting arrangement are interconnected at one end by a gear train which is driven by a motor. In case of drafting arrangement with four-on four rollers, the third drafting roller rotates at a greater speed than fourth drafting roller as seen from front of the machine row. The second drafting roller rotates at a greater speed than the third drafting roller. The first drafting roller which is also termed as delivery or front roller rotates at a greater speed than the second drafting roller. The ratio of the rotational speed of a drafting roller with respect to the preceding drafting roller called as ‘draft’ plays an important role. The draft selection varies for different types and counts of fibres.

To increase productivity of the roving frame machine, it is required to provide large number of spindles, for example 200 and above. As a result of increase in number of spindles, the drafting rollers of larger length should be provided in the roving machine. However, increase in length of the drafting rollers, would pose some challenges on the drive arrangement of the drafting rollers. With the increase in length of the drafting rollers, driving arrangement has to provide high torsional force distribution along the entire length of rollers to facilitate draft especially while processing man-made fibres and draft resistant fibres such as modal, acrylic, etc. In the conventional roving machines, the drafting rollers are drivingly interconnected at one end by gear train and electric motors. However, this arrangement is not feasible for high torsional force distribution for entire length of drafting rollers. Due to this reason, a variation in resultant roving quality occurs resulting in thick and thin places in the drafted roving. Further inadequate torsional force on drafting rollers can lead to heavy loads and vibrations on drafting rollers and bearings which further reduces the roving quality. Another drawback of such conventional drafting roller assembly could be, excessive twisting of the rollers due to high torsional force application on rollers. The degree of twist exhibited by these drafting rollers varies from the driven end to free end. This would ultimately lead to failure of one or more drafting rollers. Further, due to the torsional force vibrations created, especially during processing of man-made fibres and draft resistant fibres, the quality of resultant roving would be affected.

In light of the foregoing discussion, there is a need to develop an improved drafting roller assembly of a roving frame machine to overcome one or more limitations stated above.

SUMMARY OF THE DISCLOSURE

One or more shortcomings of the conventional arrangements/assemblies are overcome by assembly as disclosed and additional advantages are provided through the assembly as described in the present disclosure.

Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

In one non-limiting embodiment of the disclosure, there is provided a drafting roller assembly for a roving frame machine. The assembly comprises at least two drafting modules, a plurality of drafting rollers extending from each of the at least two drafting modules up to an intermediate position between a headstock and endstock of the roving frame machine. The assembly further comprises at least one first motor configured to drive a delivery drafting roller of the plurality of drafting rollers of at least one of the two drafting modules. There is also at least one second motor provisioned in each of the at least two drafting modules. The at least one second motor is configured to drive a plurality of rear drafting rollers of the plurality of rollers extending from each of the at least two drafting modules.

In an embodiment of the disclosure, the plurality of drafting rollers are at least one of three over three rollers or four over four rollers.

In an embodiment of the disclosure, the at least one first motor is provided at each of the at least two drafting modules and is coupled to the delivery drafting roller of the plurality of drafting rollers.

In an embodiment of the disclosure, at least one of the plurality of rear drafting rollers is driven by the second motor through a transmission mechanism.

In an embodiment of the disclosure, the assembly comprises creel guide rollers driven by the at least one second motor through the transmission mechanism. The transmission mechanism is at least one of gear drive, pulley drive and chain drive.

In an embodiment of the disclosure, the at least first motor and the at least one second motor is at least one of servo motor, induction motor, synchronous motor, asynchronous motor and reluctance motors.

In another non-limiting embodiment of the disclosure, the roving frame machine comprises an assembly as disclosed above.

It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the disclosure.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES

The novel features and characteristics of the disclosure are set forth in the appended description. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:

FIG.1 illustrates schematic representation of a drafting roller assembly for a roving frame machine with an improved drive arrangement, according to an embodiment of the present disclosure.

FIG.2 illustrates schematic representation of an alternative arrangement of the drafting roller assembly for a roving frame machine of FIG.1 with an improved drive arrangement, according to some embodiment of the present disclosure.

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION

The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the description of the disclosure. It should also be realized by those skilled in the art that such equivalent assemblies do not depart from the scope of the disclosure. The novel features which are believed to be characteristic of the disclosure, as to assembly, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

In the present disclosure, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.

The terms “comprises”, “comprising”, or any other variations thereof used in the specification, are intended to cover a non-exclusive inclusion, such that an assembly that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or method. In other words, one or more elements in an assembly proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the assembly.

To overcome one or more limitations stated in the background, the present disclosure discloses an improved drafting roller assembly for a roving frame machine. To improve the productivity of the roving frame machine, number of spindles for winding the fibre has to be more, for example more than 200. The increase in number of spindles poses a requirement of increase in length of the drafting rollers. If length of the drafting rollers is extended, torsional force distribution along the entire length of the drafting roller will not be feasible. The arrangement as disclosed in the present disclosure overcomes this by dividing or splitting the drafting roller assembly into at least two separate modules between headstock and endstock of the roving frame machine. Each of the modules in the drafting roller assembly may accommodate large number of spindles and thus increase the productivity of the roving frame machine. The drafting roller assembly with at least two modules also reduces vibrations generated in the roving frame machine, thus improves the quality of roving by effectively distributing torsional force along the length of the drafting rollers. In an embodiment of the disclosure, the headstock forms one end of the roving frame machine and the headstock houses all the necessary arrangements to drive the drafting rollers. The endstock forms other end of the roving frame machine and the endstock also acts as a supporting arrangement for the components in the roving frame machine.

The at least two drafting modules of the drafting assembly comprises a plurality of drafting rollers and drive arrangement. In an embodiment, the drive arrangement includes at least one first motor, at least one second motor and a transmission mechanism. The plurality of drafting rollers maybe at least one of three over three drafting rollers, four over four drafting rollers, and combination thereof. In an embodiment, a first module of the at least two drafting modules comprises of four drafting rollers extending from headstock of the machine and terminating at an intermediate position along the machine. The four drafting rollers of the first module includes one delivery drafting roller and three rear drafting rollers. Further, a second module of the at least two drafting modules comprises three or four drafting rollers extending from endstock of the machine and terminating at an intermediate position along the machine. In an embodiment, the drafting rollers of the second module are either all three rear drafting rollers or one delivery drafting roller and three rear drafting rollers. The drafting rollers are driven by the first and second motors provided in end of each of the at least two modules. The provision of the first and second motors at each end of the drafting modules provides substantial torsional force over the entire length of the drafting rollers in roving frame. Thereby, eliminates variation in resultant roving quality like thick and thin places in the drafted roving. In an embodiment of the disclosure, the at least one first motor and at least one second motor are electric motors, and are from group comprising but not limited to synchronous motors, asynchronous motors, servo motors, induction motors and reluctance motors. In one embodiment of the disclosure, the plurality of drafting rollers are rotatably supported by a plurality of bearings throughout the length on a frame of the roving frame machine. Further, the first drafting roller also referred as delivery drafting roller of at least one of two modules is driven by independent first motor and at least one rear drafting roller of each module is driven by another second motor. The remaining rear drafting rollers two modules are driven by the second motor through transmission mechanism. In an embodiment, the transmission mechanism is at least one of a gear drive, pulley drive or chain drive. In an embodiment, the delivery drafting roller and first drafting roller are used alternatively and the same should not be construed as a limitation of the present disclosure.

Henceforth, the present disclosure is explained with the help of one or more figures of exemplary embodiments. However, such exemplary embodiments should not be construed as limitations of the present disclosure. The drafting roller assembly shown in figures is of one particular configuration, it is to be noted that slight variations in configuration of the drafting roller assembly are to be considered as part of the present disclosure.

FIG.1 is an exemplary embodiment of the present disclosure which illustrates a schematic representation of a drafting roller assembly (100) with an improved drive arrangement for a roving frame machine. In the present disclosure, the roving frame machine comprises at least two modules (101 and 102), a first module (101) which is located at the headstock (103) end of the roving frame machine and a second module (102) which is located at the endstock (104) of the roving frame machine. The drive arrangement of the roving frame machine comprises at least one first motor (106a) and at least one second motor (106b) and transmission mechanism (107) for driving the plurality of drafting rollers. In order to accommodate more number of spindles in the roving frame machine and to accordingly increase the productivity of the roving frame machine, the roving frame machine is provisioned with at least two drafting modules (101 and 102) between headstock (103) and endstock (104). As both the modules (101 and 102) can accommodate large number of spindles, the productivity of the roving frame machine will significantly improve. In one embodiment, each module (101 and 102) of the roving frame machine can accommodate about 40 - 150 spindles each.

As shown in FIG. 1, the first module (101) of the at least two modules of the roving frame machine comprises a plurality of drafting rollers extending from headstock (103) to an intermediate position between the headstock (103) and endstock (104). In an embodiment of the disclosure, the plurality of drafting rollers is at least one of three over three rollers or four over four rollers. In an exemplary embodiment of the disclosure, there are four drafting rollers, namely a delivery drafting roller (105a), also referred to as first drafting roller (105a), and three rear drafting rollers (105b-105d). The rear drafting rollers includes a second drafting roller (105b), third drafting roller (105c) and fourth drafting roller (105d) in the first module (101) of the at least two modules. The first drafting roller (105a) is also termed as the output or delivery drafting roller, wherein the sliver is delivered onto subsequent stages of wrapping around the roving bobbins mounted on the spindle to form a roving package. Also, the fourth roller (105d) considering from the delivery side of the roving frame machine is configured as a pick-up roller. The fourth drafting roller (105d) receives the sliver from sliver cans, and passes to the drafting assembly (100) for drafting. The first module (101) further comprises a driving arrangement to drive the plurality of drafting rollers to perform the drafting. The driving arrangement of the module includes at least one first motor (106a) and at least one second motor (106b) and transmission mechanism (107),as shown in FIG.1, In an embodiment of the disclosure, the first drafting roller (105a) is provided with an independent motor for its drive, i.e. the first drafting roller or the delivery drafting roller (105a) is independently driven by the first motor (106a). The first drafting roller (105a) is independently driven as it is required to be rotated at a higher speed (rpm) than the other drafting rollers. In an embodiment of the disclosure, the speed (rpm) of the first drafting roller (105a) is greater than second drafting roller (105b) and the second drafting roller (105b) rotates at a speed greater than third drafting roller (105c) and similarly, the third drafting roller (105c) rotates at a speed higher than the fourth drafting roller (105d). The different rotational speeds of the plurality of drafting rollers are achieved through a gear transmission mechanism (107), wherein gears with different number of teeth are provisioned so as to obtain the required gear ratio and accordingly control the rotational speeds of the drafting rollers. Further, the second motor (106b) is configured to drive the third drafting roller (105c), and the third drafting roller (105c) is provided with transmission mechanism (107) to drive the second drafting roller (105b) and the fourth drafting roller (105d). In an embodiment of the disclosure, the transmission mechanism (107) is at least one of gear drive, pulley drive and chain drive. In addition, the first module (101) also comprises a creel guide rollers (108) to guide the slivers into the drafting roller assembly (100).

The term drafting used herein above and below maybe defined as an operation needed to convert the fibre to a yarn by providing necessary draft through the plurality of drafting rollers. The ratio of the rotational speed of a drafting roller with respect to the preceding drafting roller is called as draft.

Further, as shown in FIG.1 the second module (102) is positioned at endstock (104) end of the roving frame machine [not shown] has a similar arrangement as that of the first module (101). The arrangement of second module (102) is symmetric or mirror of the arrangement of the first module (101). The second module (102) of the roving frame machine comprises a plurality of drafting rollers and drive arrangement. As described above for the first module (101), the first drafting roller or the delivery drafting roller (105a) of the second module (102) is independently driven by a first motor (106a) of the second module (102) and the rear drafting rollers – second drafting roller (105b), third drafting roller (105c) and fourth drafting roller (105d) are configured to be driven by the second motor (106b). The second motor (106b) directly drives the third drafting roller (105c), whereas the second drafting roller (105b) and fourth drafting roller (105d) are driven by third drafting roller (105c) through the transmission mechanism (107). In an embodiment, the transmission mechanism (107) comprises at least three gears for driving second and fourth drafting rollers (105b and 105d). One of the three gears of the transmission mechanism (107) coupled to the third drafting roller (105c), meshes with the corresponding gears mounted on fourth and second drafting rollers (105b and 105d) for driving the fourth drafting roller (105d).

In operation, the sliver from the sliver cans is fed into the creel guide rollers (108) which guides the sliver into the drafting roller assembly (100) for reduction of thickness and subsequently form roving. In the drafting roller assembly (100), each of the drafting rollers, are configured to rotate at different speeds which reduce the thickness of the sliver. The fourth drafting roller (105d) rotating at low speed picks up the sliver guided through creel rollers (108) and reduces the thickness of the sliver. The sliver is then drawn by the third drafting roller (105c) which further reduces the thickness of the sliver. Further, the sliver passes through the second drafting roller (105b) and first drafting roller (105a) subsequently to further reduce the thickness. The first drafting roller (105a) also known as the delivery or output drafting roller, delivers the reduced thickness of the sliver or fibre to the roving bobbins [not shown] mounted on the spindle. The spindle [not shown] associated with a flyer device rotating at a predetermined speed winds the twisted fibre around the roving bobbins. The roving package so obtained may be used in the spinning machine to obtain yarn. Since the drafting rollers are arranged as modules, the torsional force on each drafting rollers is transmitted only for an effective length and the variation in torsional force is avoided especially during processing man-made fibres and draft resistant fibres. Thus the quality of resultant roving would not be affected due to torsional variation. In an embodiment of the disclosure, the roving frame machine comprises a plurality of top drafting rollers [not shown]. The top drafting rollers will be mounted above the bottom drafting rollers with a predetermined gap between them. Both the top and bottom drafting rollers aid in reducing the thickness of the sliver. In the predetermined gap, the sliver will be allowed to pass through and drafting rollers perform the function of reducing the thickness of sliver.

Referring now to FIG.2, which is an exemplary embodiment of the present disclosure discloses an alternative arrangement of the drafting roller assembly (100) with drive arrangement for a roving frame machine. In this alternative embodiment of the present disclosure, it differs from the drafting roller assembly (100) of FIG.1 from the fact that the first drafting roller (105a) extends along the entire length of the roving frame machine without any split from at least one of headstock (103) and endstock (104). Hence, a single first motor (106a) provided at the headstock (103) end to drive the entire length of the first drafting roller (105a).

In an exemplary embodiment of the disclosure, the at least one first motor (106a) is configured to drive the delivery / first drafting roller (105a) of the first module, and the at least one second motor (106b) is configured to drive the rear rollers (105b, 105c, 105d) of the at least two modules (101 and 102). The first module (101) at the headstock (103) end comprises four bottom drafting rollers (105a, 105b, 105c and 105d) – one delivery drafting roller (105a) and three rear drafting rollers, and the second module (102) at the endstock (104) end comprises three rear drafting rollers (105a, 105b and 105c) which are supported by end bearings [not shown] along the entire length of the machine frame at regular intervals. The delivery / first drafting roller (105a) of the first module (101) extend continuously without split along the entire length of the long frame machine and is driven by independent first motor (106a). The third drafting roller (105c) of the first module (101) is driven by second motor (106b). Further, the second drafting roller (105b) of the first module (101) is driven by the third drafting roller (105c) through transmission mechanism (107). The third drafting roller (105c) also drives the fourth drafting roller (105d) of the first module (101) through transmission mechanism (107). Furthermore, the second motor (106b) also drives the creel guide rollers (108) through transmission mechanism (107). In an embodiment of the disclosure, the first module (101) may be configured to comprise 100 spindles and above.

In an embodiment of the disclosure, the second module (102) comprises less than 120 spindles, for example 40 spindles. In the second module (102), the third drafting roller (105c) is driven by the second motor (105b). Further, the second drafting roller (105b) of the second module (102) is driven by the third drafting roller (105c) through transmission mechanism (107). The third drafting roller (105c) also drives the fourth drafting roller (105d) of the second module (102) through the transmission mechanism (107). In the alternate arrangement of the drafting roller assembly (100) as shown in FIG.2, the length of first drafting roller (105a) is high in comparison with the other drafting rollers, as the first drafting roller (105a) substantially extends all over the length of the roving frame machine. Also, in one alternative arrangement, the plurality of drafting rollers extending from headstock (103) would have more length when compared to the plurality of drafting rollers extending from endstock (104). In such arrangement, the number spindles would vary accordingly.

The at least one first and second motors (106a and 106b) employed in the drive arrangement of the drafting assembly (100) are selected from a group comprising but not limited to servo motors and induction motors. As an embodiment, the electric motors include synchronous motors, asynchronous motors and reluctance motors. The drafting roller assembly (100) of the present disclosure, for roving frame machines could be worked with large number of spindles, for example 120 spindles and above. The drafting roller drive motors are connected to one or more servo drives / frequency converters (not shown). The said servo drives / frequency converters are connected to a control unit with man-machine interface, i.e. display. The draft change according to the requirement is entered at the display unit thereby precise draft is achieved in a user-friendly manner. By this means, the draft selection for different counts are easily processed. In an embodiment, the application of servo drives for the drafting rollers in roving frame paves way for increasing the number of spindles without torsional disturbances.

In the paragraphs above and below, drafting rollers and bottom drafting rollers are used interchangeably and hence the disclosure doesn’t intend to limit the type of drafting roller to any particular type as any drafting roller could be used.

Advantages

The present disclosure discloses a drafting roller assembly for a roving frame machine with at least two drafting modules which is capable of transmitting effective torsional force distribution over entire length of the drafting rollers for large number of spindles.

The present disclosure discloses a drafting roller assembly for a roving frame in which the arrangement of roller reduces vibrations on drafting rollers and bearings. This enhances life of the drafting rollers, and also helps in trouble free operation of the machine. This improves performance of roving frame machines significantly.

Equivalents

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.

It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Referral Numerals

Referral Numerals Description
101 First module
102 Second module
103 Headstock of the roving frame machine
104 Endstock of the roving frame machine
105a Delivery / First drafting roller
105b Rear / Second drafting roller
105c Rear / Third drafting roller
105d Rear / Fourth drafting roller
106a First motor
106b Second motor
107 Transmission mechanism
108 Creel guide rollers

,CLAIMS:We claim:

1. A drafting roller assembly (100) for a roving frame machine, the assembly (100) comprising:
at least two drafting modules (101 and 102);
a plurality of drafting rollers extending from each of the at least two drafting modules (101 and 102) up to an intermediate position between a headstock (103) and endstock (104) of the roving frame machine;
at least one first motor (106a) configured to drive a delivery drafting roller (105a) of the plurality of drafting rollers of at least one of the two drafting modules (101 and 102);
at least one second motor (106b) provisioned in each of the at least two drafting modules (101 and 102), the at least one second motor (106b) is configured to drive a plurality of rear drafting rollers (105b, 105c, 105d) of the plurality of rollers extending from each of the at least two drafting modules (101 and 102).

2. The assembly (100) as claimed in claim 1, wherein the plurality of drafting rollers are at least one of three over three rollers or four over four rollers.

3. The assembly (100) as claimed in claim 1, wherein the at least one first motor (106a) is provided at each of the at least two drafting modules (101 and 102), and is coupled to the delivery drafting roller (105a) of the plurality of drafting rollers.

4. The assembly (100) as claimed in claim 1, wherein at least one of the plurality of rear drafting rollers (105b, 105c, 105d) is driven by the second motor (106b) through a transmission mechanism (107).

5. The assembly (100) as claimed in claim 1 comprises creel guide rollers (108) driven by the at least one second motor (106b) through a transmission mechanism (107).

6. The assembly (100) as claimed in claims 4 and 5, wherein the transmission mechanism (107) is at least one of gear drive, pulley drive and chain drive.

7. The assembly (100) as claimed in claim 1 wherein the at least first motor (106a) and the at least one second motor (106b) is at least one of servo motor, induction motor, synchronous motor, asynchronous motor and reluctance motors.
8. A roving frame machine comprising an assembly (100) as claimed in claim 1.