DESC:
TECHNICAL FIELD OF THE INVENTION
The present invention relates to textile spinning machines. Particularly the invention is related to a spinning machines equipped with a sliver filling stations and/or sliver processing station. More particularly, the present invention relates to method and apparatus for processing slivers in spinning machines of a textile yarn spinning mill.

BACKGROUND OF THE INVENTION
In spinning preparatory machines like Draw frame, Comber and Carding or same like machines have drafting area for reducing the sliver thickness and also a coil delivery area which fill the sliver into sliver can. In textile fibre processing machines such as carding, draw frame or comber machine, a drafted fiber band which is known as sliver is filled in a can, located in the filling station of a draw frame or the like, by means of a turntable.

At present in the spinning mills, there are two process categories are used depending upon the end yarn requirement. The first one is carded yarn process and the next one is called combed yarn process. In carded yarn process, the sliver filled can from a carding machine is further processed in breaker draw frame. The output sliver from breaker draw frame is then processed in finisher draw frame. The outcome sliver from finisher draw frame is then stored in sliver can and sent to speed frame or roving frame where the sliver is drafted to form roving package which is the input to ring spinning machine. In the ring spinning machine, the said roving is drafted further and twisted to form yarn and then wound on the ring cop or ring bobbin.

Whereas in combed yarn process, the sliver filled can from a carding machine is further processed in breaker draw frame. The output sliver from breaker draw frame is then in processed in lap forming machine to form a lap roll. Then this lap roll is processed in combing machine in which the rotating circular comb device removes short fibres in the fibre bat or lap sheet. Then the combed sliver is filled in a sliver storage can and then processed in finisher draw frame. The outcome sliver from finisher draw frame is then stored in sliver can and sent to speed frame or roving frame where the sliver is drafted to form roving package which is the input to ring spinning machine. In the ring spinning machine, the said roving is drafted further and twisted to form yarn and then wound on the ring cop or ring bobbin. In practical, the breaker draw frame is provided without autolevelling system whereas the finisher draw frame is provided with autolevelling system.

In order to process the natural fibres, it is necessary to use the above process line since those fibres have notable percentage of short fibres. For getting a good quality of spun yarn, such short fibres must be removed from processing slivers and hence combing process is used. Moreover, this also requires plurality of draw frame passages before converted into yarn in ring spinning machine. This said process is also applicable while processing natural-synthetic fibre blend spinning.

Thus from spinning mill’s perspective, installing such many number of preparatory machines is costlier as well as floor space consuming one. Apart from that, a process shortening is required between carding machine to ring spinning machine or airjet spinning machine in order to reduce the higher number of spinning preparatory machines as well as floor space.

SUMMARY OF THE INVENTION
The following disclosure presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.

An object of the present invention is to overcome the problems of prior art.

The main objective of the invention is to provide a space saving process arrangement of spinning machines in spinning mills.

Another objective of the invention to reduce the number of preparatory machines in a spinning mill by providing a shortened fibre process between carding machine and spinning machine.

Yet another objective of the invention is to provide a space saving fibre process arrangement by continuous supply of sliver cans to the subsequent processing machines according to the operating speed of respective machines.

The present invention relates to the method and apparatus for processing slivers in spinning machines of a textile yarn spinning mill wherein a preliminary drafting is provided to the card sliver and stored in a sliver can, atleast 4 number of carded slivers, preferably at least 9 of said carded sliver is then processed by at least an autoleveller draw frame and/or roving frame and then processed by ring frame machine. Said preliminary drafting is provided with autolevelling system or without autolevelling system. During trials / experiments/ testing, It is surprised to note that this process provides an improved yarn consistency level and count CV% upto 11% to 25% to the final delivery yarn when compared to the existing process.

The sliver processing takes place at very less number of processing stations or machines to minimize the overall initial investment and space requirement. Thereby a low cost yarn manufacturing process is achieved which is more advantageous from yarn spinning mill perspective.

In one implementation, present invention provides a yarn spinning system for processing slivers in textile spinning machines comprising at least one carding machine configured to card sliver, at least one preliminary drafting unit positioned in the carding machine having plurality of drafting rollers configured to draft the carded sliver, at least one sliver can(s) positioned downstream the plurality of drafting rollers configured to store the drafted sliver, at least on leveller draw frame or finisher draw frame having plurality of creel rollers, configured for levelling drafting of at least 9 feed slivers through plurality of drafting roller set(s), at least one sliver can positioned downstream the plurality of drafting roller set(s) configured to store the sliver passing through the drafting roller set(s) and wherein the sliver can is fed to a speed frame or roving frame to form a roving package and the roving package is fed into a ring frame configured to form yarn.

In one implementation of the present invention, preliminary drafting unit is an auto-levelling or non-auto-levelling system.

In one implementation of the present invention, the auto-levelling system is configured to compensate to mass fluctuations in incoming sliver in the carding machine and the draw frame comprises a dedicated motor drive or a drafting system synchronized drive configured to positively drive the creel rollers.

In one implementation present invention provides a method for processing slivers by a yarn spinning system in textile spinning machines in comprising carding the sliver in a carding machine, drafting the carded sliver received from the carding machine, storing the drafted sliver in a sliver can(s), levelling and drafting at least 9 drafted slivers received from the sliver can(s), storing the levelled and drafted sliver in a sliver can(s) and feeding the sliver can(s) to a speed frame or roving frame to form a roving package and feeding the roving package into a ring frame to form yarn.

In one implementation, present invention provides a yarn spinning system for processing slivers in textile spinning machines comprising at least one carding machine configured to card sliver, at least one preliminary drafting unit positioned in the carding machine having plurality of drafting rollers configured to draft the carded sliver, at least one sliver can(s) positioned downstream the plurality of drafting rollers configured to store the drafted sliver, a lap former configured to receive carded sliver from the can(s) and to form a lap roll, wherein the lap roll is fed to a comber configured to form combed sliver by removing short fibres from the lap roll and at least one sliver can positioned downstream the comber configured to store the combed sliver and the combed sliver is then fed to an auto leveller draw frame or finisher draw frame having plurality of creel rollers, configured to level and draft at least 9 combed sliver through plurality of drafting roller set(s), at least one can positioned downstream the drafting roller set(s) wherein the sliver can is fed to a speed frame or roving frame to form a roving package and the roving package is fed into a ring frame configured to form yarn.

In one implementation, present invention provides a method for processing sliver by a yarn spinning system in textile spinning machines, said method comprising steps of carding the sliver in a carding machine, drafting the carded sliver received from the carding machine, storing the drafted sliver in a sliver can(s), feeding the drafted sliver from the sliver can(s) to a lap former, forming a lap roll, feeding the lap roll to a comber to remove the short fibres from the lap roll, storing the combed sliver in a sliver can(s), levelling and drafting at least 9 drafted sliver received from the sliver can(s), storing the drafted sliver in a can(s) and feeding the sliver can(s) to a speed frame or roving frame to form a roving package and feeding the roving package into a ring frame to form yarn.

In one implementation present invention provides a system for sliver processing in textile spinning machines, comprising a carding machine configured to card and store sliver in plurality of cans, at least one auto levelling draw frame having plurality of creel rollers, comprising at least two drafting systems, plurality of creel rollers wherein a preliminary drafting is induced to the slivers at first drafting system and then a levelling drafting induced at the second drafting system and at least one can configured to store the drafted sliver wherein the sliver can is fed to a roving frame to form a roving package and the roving package is fed into a ring frame configured to form yarn.

In one implementation of the present invention, the plurality of drafting systems may be provided successive to one another with a single feed creel or parallely with a dedicated or individual feed creel.

In one implementation, present invention provides a system for sliver processing in textile spinning machines comprising a carding machine configured to card sliver, at least one autolevelled drafting system positioned in the carding machine configured to preliminarily draft the carded sliver, at least one sliver can(s) configured to store the drafted carded sliver, at least one draw frame having plurality of creel rollers, configured to receive sliver can(s) in a creel zone of the draw frame, a drafting unit positioned downstream the creel zone of the draw frame, plurality of creel rollers wherein the drafting unit comprises at least 6 over 6 drafting arrangement configured to compensate preliminary draft at carding stage and feed the sliver cans to a roving frame to form a roving package which is further fed into a ring frame configured to form yarn.

Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The above and other aspects, features and advantages of the embodiments of the present disclosure will be more apparent in the following description taken in conjunction with the accompanying drawings, in which:

Figure 1 shows the sliver processing method according to the known carded yarn process.
Figure 2 shows the sliver processing method according to the known combed yarn process.
Figure 3 illustrates the sliver processing method of the carded yarn process, according to one of the embodiments of the present invention.
Figure 4 illustrates the sliver processing method of the combed yarn process, according to one of the embodiments of the present invention.
Figures 5&6 depict the various embodiment of sliver processing method, according to one of the embodiments of the present invention.

Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may not have been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF THE PRESENT INVENTION
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding, but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, a reference to "a component surface" includes a reference to one or more of such surfaces.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments belong. Further, the meaning of terms or words used in the specification and the claims should not be limited to the literal or commonly employed sense, but should be construed in accordance with the spirit of the disclosure to most properly describe the present disclosure.

The terminology used herein is for the purpose of describing particular various embodiments only and is not intended to be limiting of various embodiments. As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising" used herein specify the presence of stated features, integers, steps, operations, members, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, members, components, and/or groups thereof. Also, Expressions such as "at least one of," when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.

According to Figure-1, the known carded yarn process comprises the sliver processing stages through from carding machine (1), which stores the delivered sliver in can (2); the sliver from these plurality of sliver cans (2) undergoes drafting process through drafting roller set (4) of the breaker draw frame (3) is then stored in sliver can (5); the sliver can (5) is then fed to auto leveller draw frame (6) or finisher draw frame where the sliver undergoes levelling drafting process through drafting roller set (7) and stored in draw frame sliver can (8); next this sliver can (8) is fed to speed frame or roving frame (9) to form roving package (10) which is then drafted further and twist is imparted in ring frame (11) to form as yarn and finally wound on ring bobbin.

In Figure-2, the known combed yarn process comprises a carding machine (1) which stores the delivered sliver in the can (2); the sliver from these plurality of sliver cans (2) undergoes drafting process through drafting roller set (4) in the breaker draw frame (3); said breaker draw frame (3) is provided without any autolevelling system; the drafted sliver of breaker draw frame (3) is then stored in sliver can (5); said filled sliver cans (5) are then proceeded to lap former (12) where the plurality of such slivers are combined and drafted together to form a lap roll (13); then the lap roll (13) is fed to comber (14) where the lap sheet is combed by circular comb or combing cylinder (15) for removing short fibres & neps; the combed sliver is then stored in the sliver can (16) which is fed to auto leveller draw frame (6) or finisher draw frame where the sliver undergoes levelling drafting process through drafting roller set (7) and stored in draw frame sliver can (8); next the sliver can (8) is fed to speed frame or roving frame (9) to form roving package (10) which is then drafted further and twist is imparted in ring frame (11) to form as yarn and finally wound on ring bobbin.

Carded Sliver Process Shortening:
According to the present invention, the method of processing slivers in carded yarn spinning system in a textile spinning machines is shown in Figure-3 of the drawings wherein the carding machine (1) is provided with a preliminary drafting unit (100) in which the carded sliver is drafted by plurality of rollers and then stored in sliver cans (200). The said preliminary drafting unit (100) is a autolevelling or non autolevelling system according to the invention and may subject to use wisely depending upon the requirement. Said autolevelling process on the sliver compensates to mass fluctuations in the incoming sliver and makes the delivery material to have more uniformity. The filled sliver cans (200) are then sent to auto leveller draw frame (6) or finisher draw frame having plural creel rollers where the sliver undergoes levelling drafting process through drafting roller set (7) and stored in draw frame sliver can (300); next the sliver can (300) is fed to speed frame or roving frame (9) to form roving package (10) which is then drafted further and twist is imparted in ring frame (11) to form as yarn and finally the same is wound on ring bobbin. According to this invention, this process provides an improved yarn consistency level and count CV% upto 11% to 25% onto the final delivery yarn when compared to the existing process.

Combed Sliver Process Shortening:
The method of processing slivers in combed yarn spinning system according to Figure-4 of the present invention, the carding machine (1) is provided with a preliminary drafting unit (100) where the carded sliver is drafted by drafting rollers and then stored in sliver cans (200). The filled sliver cans (200) are then sent to lap former (12) where the plurality of carded slivers are subjected to draft further to form a lap roll (13). This lap roll (13) is fed to comber (14) which removes short fibres in it and then formed as combed sliver which is then stored in sliver can (400). This combed sliver is then fed to auto leveller draw frame (6) or finisher draw frame where the sliver undergoes levelling drafting process through drafting roller set (7) and stored in draw frame sliver can (500); next the sliver can (500) is fed to speed frame or roving frame (9) to form roving package (10) which is then drafted further and twist is imparted in ring frame (11) to form as yarn and finally the same is wound on ring bobbin. In this process, since the carded sliver is autolevelled and directly fed to the lap former (6), the lap weight is maintained more uniform and so that the noil extraction in comber (14) also uniformly maintained. Therefore, the resultant yarn has a consistency level in parameters like Imperfection Index, Count Strength Product (CSP), Count CV% and classimat results like A1, A2 ...Faults.

Further Embodiment of the Invention:
The method according to the present invention provides encouraging results when applied with following embodiment as shown in Figure-5 & Figure-6. As shown in Figure-5 the carding machine (1) without preliminary drafting stores the sliver in sliver can (2) according to the disclosure of invention described herein above. While processing the fibres for coarser count yarn, it is not necessary to subject the sliver to undergo heavy drafting and parallelising. Hence the plurality carded sliver stored in bigger cans (200) is sent as feed material to the auto levelling draw frame (600) which comprised at least two drafting systems (700, 800). Said plurality of drafting systems (700, 800) can be provided serially i.e., successive to one another using single feed creel; or provided parallely as side by side manner with dedicated or individual feed creel. To increase the productivity, the number of feed cans (200) kept can be varied from 4 to 16 and therefore a preliminary drafting is induced to the slivers at first drafting system (700) and then a levelling drafting induced at the second drafting system (800). For better results, the number feed cans (200) to the auto levelling draw frame (600) is maintained as atleast 9 and thereby to get optimum sliver hank value.

The drafted sliver is stored in sliver can (900) and then transferred to roving frame (9) to make roving package which is then sent to ring spinning machine (11) to form final yarn by inducing the twist. In next embodiment shown in Figure-6 the carded sliver is drafted preliminarily using autolevelled drafting system (100) provided in the carding machine (1) and then stored in sliver can (200). In this embodiment there are atleast 4 feed slivers, preferably at least 9 or 12 feed sliver cans (200) are placed in creel zone of draw frame (600) which has a drafting unit (1000). In said drafting unit (1000), atleast 6 over 6 drafting arrangement compensates the required preliminary draft at carding stage and makes the sliver ready to spun further in subsequent roving frame (9) and then to ring frame (11). Said 6 over 6 drafting arrangement is preferably provided with autolevelling arrangement. Apart from the ring spinning process, the above method of processing the sliver is applicable to airjet and rotor spinning also. In such case, the process can be further shortened by eliminating the speed frame or roving frame machine since the sliver from auto levelling draw frame (600) is fed as input to said airjet or rotor spinning.

According to all aforesaid embodiment of this invention, the processing sliver undergoes at least 1.2 times to 3.5 times preliminary drawing at the carding machine (1). And also the said preliminary drafted fibre sliver is further drafted to at least 4 times to 16 times in the subsequent draw frame processes. Thus the sliver in draw frame process undergoes at least 4.8 times, preferably 20 times when compared to the carded sliver and thereby made adoptable to shortened process of present invention. Moreover, by providing the preliminary drafted system (100) before the auto levelling draw frame (600), the hook percentage of the process is maintained within 7% which is at par with the existing sliver process which uses more number of drafting process in between to achieve the same result. This is because, the fibre hook % in each sliver is reduced through preliminary drafted system (100) and resultant sliver is sent to auto levelling draw frame (600).

Moreover, in aforesaid sliver processing methods according to the invention, the number feed cans (200, 400) in draw frame machine (6) or (600) is maintained as 9 and above and therefore an optimized draft is required to avoid draft fluctuation in creel. Said fluctuation arises because of the increased creel length while going for higher number of feed cans. Such fluctuations play negative impact in the sliver taken from extreme end cans than the nearest cans present upstream the drafting rollers set (7). Hence the creel of said draw frame machine (6) or (600) is provided with dedicated motor drive or drafting system synchronized drive to positively drive the creel rollers (not shown).

In one implementation, present invention provides a carded yarn spinning system for processing slivers in textile yarn spinning machines comprising at least one carding machine (1) configured to card sliver, at least one preliminary drafting unit (100) positioned in the carding machine (1) having plurality of drafting rollers configured to draft the carded sliver, at least one sliver can(s) (200) positioned downstream the plurality of drafting rollers configured to store the drafted sliver, at least on leveller draw frame (6) or finisher draw frame configured for levelling drafting of the sliver through plurality of drafting roller set(s) (7), plurality of creel rollers, at least one sliver can (300) positioned downstream the plurality of drafting roller set(s) (7) configured to store the sliver passing through the drafting roller set(s) (7) and wherein the sliver can (300) is fed to a speed frame or roving frame (9) to form a roving package (10) and the roving package (10) is fed into a ring frame (11) configured to form yarn.

In one implementation of the present invention, preliminary drafting unit (100) is an auto-levelling or non-auto-levelling system.

In one implementation of the present invention, the auto-levelling system is configured to compensate to mass fluctuations in incoming sliver in the carding machine (1) and the draw frame (6) comprises a dedicated motor drive or a drafting system synchronized drive configured to positively drive the creel rollers.

In one implementation present invention provides a method for processing slivers in textile yarn spinning machines in a carded yarn spinning system comprising carding the sliver in a carding machine (1), drafting the carded sliver received from the carding machine (1), storing the drafted sliver in a sliver can(s) (200), levelling and drafting the drafted sliver received from the sliver can(s) (200), storing the levelled and drafted sliver in a sliver can(s) (300) and feeding the sliver can(s) (300) to a speed frame or roving frame (9) to form a roving package (10) and feeding the roving package (10) into a ring frame (11) to form yarn.

In one implementation, present invention provides a combed yarn spinning system for processing slivers in textile yarn spinning machines comprising at least one carding machine (1) configured to card sliver, at least one preliminary drafting unit (100) positioned in the carding machine (1) having plurality of drafting rollers configured to draft the carded sliver, at least one sliver can(s) (200) positioned downstream the plurality of drafting rollers configured to store the drafted sliver, plurality of creel rollers, a lap former (12) configured to receive carded sliver from the can(s) (200) and to form a lap roll (13), wherein the lap roll (13) is fed to a comber (14) configured to form combed sliver by removing short fibres from the lap roll (13) and at least one sliver can (400) positioned downstream the comber (14) configured to store the combed sliver and the combed sliver is then fed to an auto leveller draw frame (6) or finisher draw frame configured to level and draft the combed sliver through plurality of drafting roller set(s) (7), at least one can (500) positioned downstream the drafting roller set(s) (7) wherein the sliver can (500) is fed to a speed frame or roving frame (9) to form a roving package (10) and the roving package (10) is fed into a ring frame (11) configured to form yarn.

In one implementation, present invention provides a method for processing sliver by a combed yarn spinning system in textile yarn spinning mills, said method comprising steps of carding the sliver in a carding machine (1), drafting the carded sliver received from the carding machine (1), storing the drafted sliver in a sliver can(s) (200), feeding the drafted sliver from the sliver can(s) (200) to a lap former (12), forming a lap roll (13), feeding the lap roll (13) to a comber (14) to remove the short fibres from the lap roll (13), storing the combed sliver in a sliver can(s) (400), levelling and drafting the drafted sliver received from the sliver can(s) (400), storing the drafted sliver in a can(s) (500);and

feeding the sliver can(s) (500) to a speed frame or roving frame (9) to form a roving package (10) and feeding the roving package (10) into a ring frame (11) to form yarn.
In one implementation present invention provides a system for sliver processing in textile spinning machines, comprising a carding machine (1) configured to card and store sliver in plurality of cans (200), at least one auto levelling draw frame (600) comprising at least two drafting systems (700, 800), plurality of creel rollers wherein a preliminary drafting is induced to the slivers at first drafting system (700) and then a levelling drafting induced at the second drafting system (800) and at least one can (900) configured to store the drafted sliver wherein the sliver can (500) is fed to a roving frame (9) to form a roving package (10) and the roving package (10) is fed into a ring frame (11) configured to form yarn.

In one implementation of the present invention, the plurality of drafting systems (700, 800) may be provided successive to one another with a single feed creel or parallely with a dedicated or individual feed creel.

In one implementation, present invention provides a system for sliver processing in textile spinning machines comprising a carding machine (1) configured to card sliver, at least one autolevelled drafting system (100) positioned in the carding machine (1) configured to preliminarily draft the carded sliver, at least one sliver can(s) (200) configured to store the drafted carded sliver, at least one draw frame (600) configured to receive sliver can(s) (200) in a creel zone of the draw frame, a drafting unit (1000) positioned at the creel zone of the draw frame (600), plurality of creel rollers wherein the drafting unit (1000) comprises at least 6 over 6 drafting arrangement configured to compensate preliminary draft at carding stage and feed the sliver cans (200) to a roving frame (9) to form a roving package which is further fed into a ring frame (11) configured to form yarn.

In the above detailed description, reference is made to the accompanying drawings that form a part thereof, and illustrate the best mode presently contemplated for carrying out the invention. However, such description should not be considered as any limitation of scope of the present unit. The structure thus conceived in the present description is susceptible of numerous modifications and variations, all the details may furthermore be replaced with elements having technical equivalence. In practice the materials and dimensions may be any according to the requirements, which will still be comprised within its true spirit. The embodiments shown herein are only exemplary. And further embodiments are possible within the scope of the invention.
,CLAIMS:
1. A yarn spinning system for processing slivers in textile spinning machines, said system comprising:
at least one carding machine (1) configured to card sliver;
at least one preliminary drafting unit (100) positioned in the said carding machine (1) having plurality of drafting rollers configured to draft the carded sliver;
at least one sliver can(s) (200) positioned downstream the plurality of drafting rollers configured to store the drafted sliver;
at least one leveller draw frame or finisher draw frame (6, 600) having plurality of creel rollers, configured for levelling drafting of at least 9 feed slivers through plurality of drafting roller set(s) (7, 700, 800, 1000);
at least one sliver can (300, 900) positioned downstream the plurality of drafting roller set(s) (7, 700, 800, 1000) configured to store the sliver passing through the drafting roller set(s) (7, 700, 800, 1000); and
wherein the sliver can (300, 900) is fed to a speed frame or roving frame (9) to form a roving package (10) and the roving package (10) is fed into a ring frame (11) configured to form yarn.

2. The system as claimed in claim 1, wherein the preliminary drafting unit (100) is an auto-levelling or non-auto-levelling system.

3. The system as claimed in claim 2, wherein the auto-levelling system is configured to compensate the mass fluctuations in incoming sliver in the carding machine (1).

4. The system as claimed in claim 1, wherein the draw frame (6, 600) comprises a dedicated motor drive or a drafting system synchronized drive configured to positively drive the creel rollers.

5. The system as claimed in claim 1, wherein the processing sliver undergoes at least 1.2 times to 3.5 times preliminary drawing at the carding machine (1).

6. The system as claimed in claim 1, wherein the formed yarn is wound on a ring bobbin.

7. A method for processing slivers by means of a yarn spinning system in textile spinning machines, said method comprising steps of:
carding the sliver in a carding machine (1);
drafting the carded sliver received from the carding machine (1);
storing the drafted sliver in a sliver can(s) (200);
levelling and drafting at least 9 drafted slivers received from the sliver can(s) (200);
storing the levelled and drafted sliver in a sliver can(s) (300, 900);and
feeding the sliver can(s) (300, 900) to a speed frame or roving frame (9) to form a roving package (10) and feeding the roving package (10) into a ring frame (11) to form yarn.

8. A yarn spinning system for processing slivers in textile spinning machines as claimed in claim 1, said system comprising:
at least one carding machine (1) configured to card sliver;
at least one preliminary drafting unit (100) positioned in the carding machine (1) having plurality of drafting rollers configured to draft the carded sliver;
at least one sliver can(s) (200) positioned downstream the plurality of drafting rollers configured to store the drafted sliver;
a lap former (12) configured to receive carded sliver from the can(s) (200) and to form a lap roll (13);
wherein the lap roll (13) is fed to a comber (14) configured to form combed sliver by removing short fibres from the lap roll (13) and at least one sliver can (400) positioned downstream the comber (14) configured to store the combed sliver; and

the combed sliver is then fed to an auto leveller draw frame (6) or finisher draw frame having plurality of creel rollers, configured to level and draft at least 9 combed slivers through plurality of drafting roller set(s) (7);
at least one can (500) positioned downstream the drafting roller set(s) (7);
wherein the sliver can (500) is fed to a speed frame or roving frame (9) to form a roving package (10) and the roving package (10) is fed into a ring frame (11) configured to form yarn.

9. The system as claimed in claim 8, wherein the draw frame (6) comprises a dedicated motor drive or a drafting system synchronized drive configured to positively drive the creel rollers.

10. The system as claimed in claim 8, wherein the processing sliver undergoes at least 1.2 times to 3.5 times preliminary drawing at the carding machine (1).

11. A method for processing sliver by a yarn spinning system in textile spinning machines as claimed in claim 8, said method comprising steps of:
carding the sliver in a carding machine (1);
drafting the carded sliver received from the carding machine (1);
storing the drafted sliver in a sliver can(s) (200);
feeding the drafted sliver from the sliver can(s) (200) to a lap former (12);
forming a lap roll (13);
feeding the lap roll (13) to a comber (14) to remove the short fibres from the lap roll (13);
storing the combed sliver in a sliver can(s) (400);
levelling and drafting at least 9 drafted slivers received from the sliver can(s) (400);
storing the drafted sliver in a can(s) (500);and
feeding the sliver can(s) (500) to a speed frame or roving frame (9) to form a roving package (10) and feeding the roving package (10) into a ring frame (11) to form yarn.

12. A system for sliver processing in textile spinning machines as claimed in claim 1, said system comprising:
a carding machine (1) configured to card and store sliver in plurality of cans (200);
at least one auto levelling draw frame (600) having plurality of creel rollers, comprising at least two drafting systems (700, 800);
wherein a preliminary drafting is induced to the slivers at first drafting system (700) and then a levelling drafting induced at the second drafting system (800); and
at least one can (900) configured to store the drafted sliver;
wherein the sliver can (900) is fed to a roving frame (9) to form a roving package (10) and the roving package (10) is fed into a ring frame (11) configured to form yarn.

13. The system as claimed in claim 12, wherein the plurality of drafting systems (700, 800) may be provided successive to one another with a single feed creel or parallely with a dedicated or individual feed creel.

14. A system for sliver processing in textile spinning machines as claimed in claim 1, said system comprising:
a carding machine (1) configured to card sliver;
at least one autolevelled drafting system (100) positioned in the carding machine (1) configured to preliminarily draft the carded sliver;
at least one sliver can(s) (200) configured to store the drafted carded sliver;
at least one draw frame (600) having plurality of creel rollers, configured to receive sliver can(s) (200) in a creel zone of the draw frame;
a drafting unit (1000) positioned downstream the creel zone of the draw frame (600);
wherein the drafting unit (1000) comprises at least 6 over 6 drafting arrangement configured to compensate preliminary draft at carding stage and feed the sliver cans (200) to a roving frame (9) to form a roving package which is further fed into a ring frame (11) configured to form yarn.

15. The system as claimed in claim 14, wherein the 6 over 6 drafting arrangement preferably comprises an autolevelling arrangement.