WO2021090334A1

WO2021090334A1 - First twist and reverse secondary twist of 2 or more ply of textile yarn in single stage.

Info

Publication number: WO2021090334A1
Application number: PCT/IN2020/050934
Authority: WO
Inventors: Dharmesh VINODBHAI DESAI
Original assignee: Vinodbhai Desai Dharmesh
Priority date: 2019-11-05
Filing date: 2020-11-05
Publication date: 2021-05-14

Abstract

The present invention provides a method and apparatus for producing Primary and Secondary twisted yarns with two or more ply of yarn in single stage. The invention further states that the technology and effective single stage textile yarn device reduces different / separate type of thread carrier and two or more stage into effective single stage process. It has been observed over the years in the Textile twisting market that the twisting and plying of 2 or more ply of Textile yarn requires two stage processes for making plied twisted yarn(thread) which requires two different set of machines for each stage one is for Primary twisting and one is for Secondary twisting.

Description

TITLE

FIRST TWIST AND REVERSE SECONDARY TWIST OF 2 OR MORE PLY OF TEXTILE

YARN IN SINGLE STAGE.

FIELD OF THE INVENTION:

[001] The present invention relate to a method of primary and reverse secondary individual strand twisting of yarn with two or 3, 4 ply and particularly an apparatus for primary and secondary twisting of yarn with two or 3,4 ply in single stage.

BACKGROUND:-

[002] EP2118348B1 disclose a method for creating twisted yarn by means of a two-for-one yarn twisting machine, wherein the yarns (3) are unwound in their grain through a yarn in feed tube (22) and a hollow' spindle (24) from a multiple-wound feed spool (5) on which a plurality of yarns (3) extending substantially parallel to each oilier are wound, and are wound onto a winding bobbin (10) as twisted yarn. According to the invention, the grain of the yarns (3) extends from the release point of the yarns (3) on the feed spool (5) directly toward the yarn infeed opening (23) of the yarn infeed tube (22), wherein the yarns (3) form a conical spool shape on the feed spool (5) in at least one region (11-15) of the spool length of the feed spool. iscloses a machine for a double twister, it is provided with a freely rotatable thread guiding member concentrically mounted around the driven spindle of the double twister. The double twister of the present invention possesses the advantages that no take-up disk is present and the driven rotor consists principally of a buffer body from which the yarn emerges. The dimensions, and particularly the diameter, of the buffer body are independent of the size of the yarn package to be twi sted and may be kept as small as possible.

[003] EP2315864B1 discloses that a method for operating a spindle (2, 22) of a two-for-one twister or cabling machine, wherein a thread (5, 25) is drawn off from a drum spool (7, 21) and is fed into a guide device disposed below a twisted yarn plate (8, 24) of the spindle (2, 22), from which the thread (5, 25) exits the spindle (2, 22) nearly perpendicular to the longitudinal axis of the spindle (2, 22) and is diverted to the outer edge of the twisted yarn plate (8, 24), and runs along the spindle (2, 22) as a free thread balloon (B) encompassing the spindle (2, 22), until the thread (5, 25) is fed into the thread or cable point of a thread guide device (9, 27) above the spindle (2, 22), wherein the feed speed of the thread (5, 25) is adjusted so that the thread tension has a value that minimizes the diameter of the free thread balloon (B) encompassing the spindle (2, 22) as a function of the geometry of the spindle (2, 22).

[004] In Turkey Patent application 2017/11927 disclose about yarn twisting machine the machine comprising a main shaft into which yarn or yarns are introduced and from which yarn or yarns are taken out and the main shaft being driven by a first motor; a lower twisting disc being in contact with yarn and yarns taken out of the main shaft and said lower twisting disc being in communication with said main shaft; an upper twisting disc having an aperture through which the yarn or yarns creating a yarn balloon by advancing along the lower twisting disc are fed; an upper platform situated below said upper twisting disc; a winding element for winding the yarns or yarns passing through the upper twisting disc on a bobbin; a lower stationary table situated above the lower twisting disc; and a second motor for transmitting drive to the winding element through an axial magnetic coupling. The yarn twisting machine comprises a first power transfer device for rotating the upper twisting disc around the shaft axis, the first power transfer device being in communication with the first motor or the second motor and with the upper twisting disc.

[005] In Patent application 201621014375 disclose a method of manufacturing multi-ply separable textured yarn, the method comprising, passing a multi-ply separable interlaced filament yarn through a texturizing unit to form a multi-ply separable draw textured yarn, wherein the multi-ply separable interlaced filament yarn is separable in to at least two separable interlaced filament yarn, wherein the interlacing of the filaments 10 within each separable interlaced filament yarn is retained during further processing of the yarn to fabric and in the fabric.

[006] Thus the conventional system and/or method of manufacturing multi-ply separable textured yarn has inherent issues such as low productivity, high production cost per kilogram of yarn 20 of a particular denier, and poor capability produce low/fine and ultra-low/fine denier yarns. The system/method of manufacturing multi-ply separable textured yarn, in accordance with the present disclosure, aims to resolve issues of low production and low productivity associated with the conventional separable multi-ply yarn manufacturing.

[007] This convention process has increased the cost of production of plied yarn because of more floor space consumption, more time consuming, less efficient, high wastage & less productive.

OBJECTIVE OF THE INVENTION:

[008] The object of the present invention is to provide a machine for the primary and reverse secondary twisting in single stage in resultant to the present invention produces high quality of yarn with having capacity of increased production and reduced production cost per kilogram (kg) of yarn of a particular denier.

[009] Another object of the present invention is to provide a method for the primary and reverse secondary twisting in single stage that enables the preparation of double twisted yarn machine for the production of high quality yarn which is not limited to high, low/fine and ultra- low/fine denier yarns. SUMMARY OF THE INVENTION:

[0010] The embodiments of the invention provides a method and apparatus for producing Primary and Secondary twisted yams with two or more ply of yarn in single stage. The invention further states that the technology and effective single stage textile yam device reduces different / separate type of thread carrier and two or more stage into effective single stage process.. It has been observed over the years in the Textile twisting market that the twisting and plying of 2 or more ply of Textile yarn requires two stage processes for making plied twisted yarn (thread) which requires two different set of machines for each stage one is for primary twisting and one is for secondary twisting.

[0011] An embodiment of the invention discloses that a primary twisting and reverse secondary twisting Yarn machine (100) in single stage comprises: a primary twisting section (200); a assembly section (170); a secondary twisting section (500) and a take up section (700), wherein a large spindle (400) is assembled with 2 ,3 or 4 small spindles (160a, 160b..160d) together with the center pulley (537) and a spindle driving belt (104) for primary twisting and a reserve disc (102) is also assembled with the large spindle (400) for secondary twisting, yarn balloon formation is taken place in the large spindle, the machine comprising step of: primary twisting of yarn take place within a yarn balloon (440) of the secondary twisting in a longitude axis of rotation of small spindle which consists of a tensioner assembly (106) and a yarn guide assembly (109) in the primary twisting section (200), while driving mechanism of the primary twisting section (200) controlled by the center pulley (537) and the spindle drive belt; assembling section having 2,3 or 4 ply primary twisted yarn through a guide roller (111) for secondary twisting; secondary twisting of yarn is regulated through rotation and yarn speed of the take up section (700) ; and collecting twisted yarn on the take-up section. [0012] The embodiment further states that a machine, wherein the primary twisting section (200) is assembled with the central pulley (537) with the spindle drive belt for controlling equal tension among the 2 , 3 or 4 ply yarn, the central pulley (537) in the primary twisting section (200) is used for managing TPM (Twist per meter) in the among 2, 3 or 4 ply yarns, the primary and reverse secondary twisting has been taken place in a single stage in two for one principle and the primary twisting (Pt) depends on secondary twist (st) * twist ratio (tr), wherein the twist ratio (tr) depends on diameter of center pulley(537)/primary spindle disc.

[0013] Another embodiment of the invention disclose a process for primary and reverse secondary twisting machine in single stage comprising: a primary twisting section (200); a assembly section; a secondary twisting section (500) and a take up section, wherein a large spindle is assembled with 2 or more small spindles together with center pulley (537) and a spindle driving belt for primary twisting and a reserve disc is also assembled with the large spindle for secondary twisting, a yarn balloon formation is taken place in the large spindle, the Process comprising step of: primary twisting of yarn is taken place in a longitude axis of rotation of small spindle, which consists of tensioner assembly (106) and yarn guide assembly in the primary twisting section (200), while driving mechanism of the primary twisting section (200) controlled by a center pulley (537) and the spindle drive belt; assembling section having 2, 3 or 4 ply primary twisted yarn through a guide roller (111) for secondary twisting; secondary twisting of yarn is regulated through rotation and yarn speed of the take up section; and collecting twisted yarn on the take up section.

[0014] The embodiment further states that the Process of primary and reverse secondary twisting, wherein the primary twisting section (2001 is assembled with the central pulley (537) with the spindle drive belt(104) for controlling equal tension among the 2 , 3 or 4 ply yarn; the central pulley (537) in the primary twisting section (200) is used for managing TPM (Twist per meter) in the among 2, 3 or 4 ply yams; the primary and reverse secondary twisting has been taken place in a single stage in two for one principle; the primary twisting (Pt) depends on secondary twist (st) * twist ratio (tr), as the twist ratio (tr) depends on diameter of center pulley/prirnary spindle disc.

BRIEF DESCRIPTION OF DRAWING

[0015] Fig.l illustrates front view of primary and secondary twisting machines [0016] Fig, 2 illustrates cross section view of the primary twisting section [0017] Fig, 3 illustrates cross section view of the tensioner assembly [0018] Fig,4 illustrates cross section view of the large spindle

[0019] Fig, 5 illustrates cross section view of small spindles configuration on the large spindle. [0020] Fig.6 illustrates cross section views of the balloon guide assembly [0021] Fig 7 (a) & (b) illustrates cross section views of the take up assembly.

DESCRIPTION OF THE REFERNCE NUMERALS OF THE PARTS SHOWN IN

DRAWINGS

[0022] 101 Spindle Motor

[0023] 102 reserve disk

[0024] 103 Secondary ss disc

[0025] 104 spindle Drive belt

[0026] 105 Balloon Protector

[0027] 106 Tensioner assembly [0028] 107 Yarn Guide Pipe

[0029] 108 Top guide Bracket

[0030] 109 Yarn Guide assembly

[0031] 110 Balloon Guide Ceramic

[0032] 111 Guide Roller

[0033] 112 Yarn Tension Sensor

[0034] 113 Over Feed Assembly

[0035] 114 Take up Drum

[0036] 115 Traverse Guide

[0037] 116 Take Up Cradle

[0038] 217 Shaft Housing

[0039] 218 Primary Spindle Disc

[0040] 219 Primary Package Centre

[0041] 220 Primary Centre Pipe

[0042] 221 Supply Packages

[0043] 222 Extension Tube

[0044] 223 Steel Ball

[0045] 224 Tensioner Pipe

[0046] 225 Tensioner Piece

[0047] 226 Tensioner Center Pipe 32/36

[0048] 227 Pirn Cap Disc

[0049] 228 Pirn Cap Ring

[0050] 229 Pirn Cap Disc Top [0051] 230 Tensor Body [0052] 231 Tensor Top Guide [0053] 432 Diverse Guide [0054] 433 Top guide Ceramic [0055] 534 Package Cover [0056] 535 Package Centre [0057] 536 Primary Bolster [0058] 537 Center Pulley [0059] 538 Rubber Sleeve [0060] 239 Tensor Piece assembly

[0061] 100 Primary Twisting and Reverse Secondary Twisting Machine

[0062] 160 Small Spindles

[0063] 170 Assembly Section

[0064] 180 Secondary Twisting Section

[0065] 200 Primary Twisting Section

[0066] 400 Large Spindle

[0067] 500 Primary And Secondary Spindle Section [0068] 600 Balloon Guide Holder Assembly [0069] 700 Take-Up Section

DETAIL DESCRIPTION OF DRAWING:

[0070] The article “a”, “an” and “the” are used herein to refer to one or to more than one at least one of the grammatical things of the article.

[0071] The terms “comprise” and “comprising” are used in the inclusive, open sense, meaning that additional elements may be included. It is not intended to be construed as 5 “consists of only”.

[0072] Throughout this specification, unless the context requires otherwise the word “comprise”, and variations such as “comprises” and “comprising”, will be understood to imply the inclusion of a stated element or step or group of element or steps but not the exclusion of any other element or step or group of element or steps.

[0073] The term “including” is used to mean “including but not limited to” “Including” and “including but not limited to” are used interchangeably.

[0074] The term “twisting” means twisting applies to the twisting of one or more yarns or filaments.

[0075] .The term “single yarn twisting” is a process of twisting in which “turns of twist” are inserted in the single yarn. This process is widely used for continuous filaments, permitting for instance easy downstream processing.

[0076] The term “double twisting yarn” means in addition to the systems used for single yarn twisting, we use balloon base and tritec machines. On two for one twisters and tritec twisters, the yarn is fed both from assembly wound and single packages.

[0077] An embodiment of the invention discloses that a primary twisting and reverse secondary twisting Yarn machine (100) in single stage comprises: a primary twisting section (200); a assembly section (170); a secondary twisting section (500) and a take up section (700), wherein a large spindle (400) is assembled with 2 or more small spindles (160a, 160b..160d) together with the center pulley (537) and a spindle driving belt (104) for primary twisting and a reserve disc (102) is also assembled with the large spindle (400) for secondary twisting, a yarn balloon formation is taken place in the large spindle, the machine comprising step of: primary twisting of yarn take place within a yarn balloon (440) of the secondary twisting in a longitude axis of rotation of small spindle which consists of a tensioner assembly (106) and a yarn guide assembly (109) in the primary twisting section (200), while driving mechanism of the primary twisting section (200) controlled by the center pulley (537) and the spindle drive belt; assembling section having 2,3 or 4 ply primary twisted yarn through a guide roller (111) for secondary twisting; secondary twisting of yarn is regulated through rotation and yarn speed of the take up section (700) ; and collecting twisted yarn on the takeup section.

[0078] The embodiment further states that a machine, wherein the primary twisting section (200) is assembled with the central pulley (537) with the spindle drive belt for controlling equal tension among the 2, 3 or 4 the central pulley (537) in the primary twisting section (200) is used for managing TPM (Twist per meter) in the among 2,3 or 4 ply yarns, the primary and reverse secondary twisting has been taken place in a single stage in two for one principle and the primary twisting (Pt) depends on secondary twist (st) * twist ratio (tr), wherein the twist ratio (tr) depends on diameter of the center pulley(537)/ a primary spindle disc(218).

[0079] Another embodiment of the invention disclose a process for primary and reverse secondary twisting machine in single stage comprising: a primary twisting section (200); a assembly section(170); a secondary twisting section (500) and a take up section(700), wherein the large spindle(400) is assembled with 2,3 or 4 small spindles together (160a, 160b..160d) with center pulley (537) and a spindle driving belt(104) for primary twisting and a reserve disc(102) is also assembled with the large spindle(400) for secondary twisting. The Process comprising step of: primary twisting of yarn is taken place in a longitude axis of rotation of small spindle, which consists of tensioner assembly (106) and yarn guide assembly(109) in the primary twisting section (200), while driving mechanism of the primary twisting section (200) controlled by a center pulley (537) and the spindle drive belt(104); assembling section(170) having 2, 3 or 4ply primary twisted yarn through a guide roller (111) for secondary twisting; secondary twisting of yarn is regulated through rotation and yarn speed of the take up section; and collecting twisted yarn on the take up section.

[0080] The embodiment further states that a machine, wherein the primary twisting section (200) is assembled with the central pulley (537) with the spindle drive belt for controlling equal tension among the 2, 3 or 4 ply yarn, the central pulley (537) in the primary twisting section (200) is used for managing TPM (Twist per meter) in the among 2 or more ply yarns, the primary and reverse secondary twisting has been taken place in a single stage in two for one principle and the primary twisting (Pt) depends on secondary twist (st) * twist ratio (tr), as the twist ratio (tr) depends on diameter of the center pulley/primary spindle disc.

Primary twisting = secondary twist ^* twist ratio

Twisting ratio = diameter of center pulley / primary spindle disc.

Secondary twisting = Spindle Rotation (rpm) ^*2/ linear yarn speed pulled by take up section

[0081] The embodiments of the present invention illustrates primary and reverse secondary twisting machine (100) which are represented fixed cross section views in the following manners, fig.2 illustrates primary section assembly (200), which having the primary center pipe (220), primary package center(219), primary disc (218), are assembled on shaft housing (217), the primary shaft housing holds supply packages (221) is connected with the tensioner assembly (260). Fig.3 illustrates the tensioner assembly (260) consisting of: extension tube (222), stell ball (223), tensioner pipe (224), tensioner Piece (225), tensioner center pipe 32/36 (226), pirn cap disc (227), pirn cap ring (228), pirn cap disc top (229) and tensor body (230), tensor top guide (231). Fig.4 illustrates cross section view of the large spindle (400), diverse guide (432), balloon protector(105), yarn guide pipe (107), top guide ceramic (433), top guide bracket (108), yarn guide ceramic (109) Fig.5 illustrates cross section view of primary and secondary spindle assembly (500) having, spindle motor (101), secondary ss disc (103), package cover (534), package center (535), primary bolster (536), primary shaft housing (217), spindle drive belt (104), center pulley (537), primary disc (218), rubber sleeve (538).Fig.6 illustrates balloon guide holder assembly (600), balloon guide ceramic (110), guide roller (11 la) and (11 lb), yarn tension sensor (112), Fig 7(a) and (b) illustrates cross section view of take up assembly (700), overfeed assembly (113), take up drum (114), traverse guide (115), take up cradle (116), twisted yarn (737).

[0082] An embodiments of the invention states that a method and a machine for producing Primary and Secondary twisted yarns with two or more ply in single stage The invention further states that the technology and effective single stage textile yarn machine. It has been observed over the years in the textile twisting market that the twisting and plying of 2,3 or 4 ply of textile yarn that require two stage processes for making twisted yarn, that the two stage process affixed and completed in single stage by the present Invention.

[0083] The embodiment of the invention is a Machine for producing primary and reverse secondary twisting yarn, wherein the machine comprises of: the Primary twisting Section (200); the assembly section; the secondary section and the take up section are connected with the large spindle on machine base.

[0084] The embodiments further states that the 2, 3 or 4 small spindles are configured on the large spindle with center pulley and spindle driving belt for primary twisting process and reserve disc is also assembled on the large spindle for secondary twisting process, the both twisting has been take place in opposite direction of each others.

[0085] The primary twisting of yarn is in longitude axis rotation by 2, 3 or 4 ply spindle which consists tensioner and yarn guide assembly and regulated through center pulley and spindle drive belt.

[0086] The embodiment states that the machine (100) further comprises: a Primary spindle assly(200), a tensioner cover pipe assly) 106) and a yarn guide assly(190) are configured in the primary twisting section(200); a secondary spindle ass!y is configured in the secondary twisting section) 180); a balloon guide assly, a overfeeder assly, a sensor assly are configured in the balloon guide section(600); and a takeup assly, a traverse assly are configured in the takeup seetion(700) and the secondary twisting section which is configured on a machine base, wherein the primary section having a primary Spindle assly and a tensioner cover pipe; a yarn guide assly, wherein a primary twisting of yam is place in the yarn guide assly ; a balloon Guide Section, wherein a secondary twisting of yarn is placed in the ballon guide section: and a takeup section, wherein the takeup section produces twisted yarn

[0087] In traditionally, down twister with rings and travelers were used for twisting staple fiber yarn. For man made continuous filament yarns, one for one up twisters were most popular. Some TFO’s make entry during the first of nineteenth century. But successful use of TFO’s come in 1930’s.

[0088] The uniform character of man made continuous filament yarn and packages on to which these material are wound favored and increased use of two for one in to continuous filament yarn industries. [0089] So the requriment of s/z twisting are essential and advance techniques of twisting, which requires workable twisting of the yarn, to put into in brightness the reverse twist are needed after plying of yarns.

[0090] In the present invention the reverse twisting is take placed under the uniform tension of individual Pre-twisted yarns and with the final twisting is placed in most uniform way as in compare to any other process.

[0091] The embodiments of the invention are implemented as a machine, which is used for preparation qualitative yarns by most efficient way, that can reduced the overall cost for the preparation of yarn and less time consuming processing with in the production of qualitative yarns.

[0092] The Present invented technology is way of preparation yarn manufacturing machine wherein the machine work is used for primary and secondary twisting of 2, 3 or 4 ply yarn simultaneously.

[0093] The Present invented technology of the machine manufacturing defines functions of the [0094] embodiments (including the methods described herein) and can be twist on a variety of

[0095] suitable yarn. Illustrative suitable yarns include, but are not limited to: (i) staple

[0096] (ii) Monofilaments ; and (iii) textured (iv) Flat (v) twisted (vi) technical yarns PE, PP, PA, Polyester, Nylon, Cotton, Viscose, HDPE, PET, Acrylic and Raffia.

[0097] In general, the routines executed to implement the embodiments of the invention, a twisting yarn machine or a specific method for primary and secondary twisting herein the machine and method used for twisting yarn in most efficient way and such sequential of invented steps. The primary and secondary twisting yarn method and machine of the present invention typically is comprised in multiple novel assemblies’ method for the machine that will be producing twisted yarns, the method for yarn twisting machine have technical advancement over prior art by producing qualitative and strengthen to twisted yarns also less power consuming . in term of economical significance of the Present invention are drastically innovative change for yarn twisting industries, which makes yarn twisting in less power and time consuming over the prior arts

[0098] In addition, various programs described hereinafter may be identified based upon the application for which they are implemented in a specific embodiment of the invention. However, it should be appreciated that any particular double twisting method that follows is used merely for convenience, and thus the invention should not be limited to use solely in any specific application identified and/or implied by such double twisting way in single stage.

[0099] Thus, another embodiment of the present invention includes 2, 3 or 4 ply twisting concept simultaneously machines process which makes such invention more worth full having drastically changing scenario for yarn twisting industries. The such operations which provides capability to direct utilization of raw material in yarn twisting industries it makes work more faster by reducing manpower, electricity and time consumption at last it cost effective products.

[00100] Embodiments disclosed invention provide two in one solution with multiple ply for yarn twisting machines, in existing machines and methods are permorfed in one ply twisting concept in a time.

[00101] The present invention and some of its advantages have been described in detail for some embodiments. It should be understood that although the method and machine is described with reference to a yarn twisting machine and method, the process may be used in other contexts as well. It should also be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

[00102] An embodiment of the invention may achieve multiple objectives, but not every embodiment falling within the scope of the attached claims will achieve every objective. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. A person having ordinary skill in the art will readily appreciate from the disclosure of the present invention that processes, machines, manufacture, compositions of matter, means, methods, or steps, resently existing or later to be developed are equivalent to, and fall within the scope of, what is claimed. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.

Claims

I Claim:

1. A primary twisting and reverse secondary twisting yarn machine (100) in single stage comprises: a primary twisting section (200): a assembly section/ 1701; a secondary twisting section (500) and a take up section{700), wherein a large spmdle(400) is assembled with 2, 3 or 4 small spindl es( 160a..160b.. ) together with center pulley (537) and a spindle driving belt(104) for primary twisting and a reserve disc(102) is also assembled with the large spindle(400) for secondary twisting, a yarn balloon formation is taken place in the large spindle for twisting, the machine) 100) comprising step of: a. primary twisting of yarn is taken place in a longitude axis of rotation of small spindle, which consists of tensioner assembly (106) and yarn guide assembly(109) in the primary twisting section (200), while driving mechanism of the primary twisting section (200) controlled by a center pulley (537) and the spindle drive belt(104); b. assembling section having 2, 3 or 4 ply primary twisted yarn passes through a guide roller (111) for secondary twisting; c. secondary twisting of yarn is regulated through rotation and yarn speed of the take up section(700); and d. collecting twisted yarn on the take up section.

2. A machine as claimed in claim 1, wherein the primary twisting section (200) is assembled with the central pulley (537) with the spindle drive belt (104) for controlling equal tension among the 2,3 or 4 ply yarn.

3. A machine as claimed in claim 1, wherein the central pulley (537) in the primary twisting section (200) is used for managing TPM (Twist per meter) in the among 2, 3 or 4 ply yarns.

4. A machine as claimed in claim 1, wherein the primary and reverse secondary twisting has been taken place in a single stage in two for one principle.

5. A machine as claimed in claim 1, wherein the primary twisting (Ft) depends on secondary twist (st) * twist ratio (tr), as the twist ratio (tr) depends on diameter of the center pulley(537/primary spindle disc(218).

6. A process for primary and reverse secondary twisting machine in single stage comprsing; a primary twisting section (200); a assembly sections 170); a secondary twisting section (500 ) and a take up section(700), wherein a large spindie(400) is assembled with 2,3 or 4 small spindles together with center pulley (537) and a spindle driving beit(104) for primary twisting and a reserve disci 102) is also assembled with the large spindle(400) for secondary twisting, a yarn balloon formation is taken place in the large spindle for twisting, the machine comprising step of: a. primary twisting of yarn is taken place in a longitude axis of rotation of small spindle, which consists of tensioner assembly (106) and yarn guide assembly) 109) in the primary twisting section (200), while driving mechanism of the primary twisting section (200) controlled by a center pulley (535) and the spindle drive belli 104); b. assembling section having 2 or more ply primary twisted yarn passes through a guide roller (111) for secondary twisting: c. secondary twisting of yarn is regulated through rotation and yarn speed of the take up section; and d. collecting twisted yarn on the takeirp section.

7. A Process as claimed in claim 6, wherein the primary twisting section (200) is assembled with the central pulley (537) with the spindle drive belt(lG4) for controlling equal tension among the 2 , 3 or 4 ply yarn.

8. A Process as claimed in claim 1, wherein the central pulley (537) in the primary twisting section (200) is used for managing TPM (Twist per meter) in the among 2, 3 or 4 ply yarns,

9. A Process as claimed in claim 1, wherein the primary and reverse secondary twisting has been taken place in a single stage in two for one principle.

10. A Process as claimed in claim 1, wherein the primary twisting (Pi) depends on secondary twist (st) * twist ratio Or), as the twist ratio Or) depends on diameter of center pulley/primary spindie disc.