EP2252730A2

EP2252730A2 - A system to modify ring spinning machines to manufacture compact yarn

Info

Publication number: EP2252730A2
Application number: EP09708311A
Authority: EP
Inventors: Cengiz Ulusoy
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-05
Filing date: 2009-02-03
Publication date: 2010-11-24
Also published as: WO2009099400A3; CN101939471A; CN101939471B; EA201001261A1; MY154726A; BRPI0905846A2; TR201002575T1; WO2009099400A2

Abstract

The subject of this invention is to lessen or eliminate the problems encountered in the current compact yarn systems and to provide an easy modification system for current ring spinning machines to manufacture compact yarn. With the proposed solution, it will be possible to modify the ring spinning machines without a substantial structural amendment and in a reversible way to manufacture compact yarns. Therefore, a system to be mounted onto the pendulum arm frame (1) of a ring-spinning machine is proposed, that comprises a U-shaped carrier (2) which holds a compactor carrier (3) with compactors (10).

Description

A SYSTEM TO MODIFY THE CURRENT RING SPINNING MACHINES TO MANUFACTURE COMPACT YARN

Manufactured via ring yarn spinning method, ring yarn is a good quality type of yarn which is more resistant and thinner comparing to other types of yarn. Although ring yarn has been considered as an ideal yarn for so long, microscopic analysis has shown that the structure of this yarn was not that perfect and the amount of fibers not embedded to the yarn structure were in fact much more than of thought. In order to compete with the new methods in the yarn industry, compact yarn spinning was emerged as a method that provides a distinctive quality yarn. In the compact yarn spinning methods, a compacting area is provided right after the main drafting area to keep the fibers together as much as possible and in a parallel way, the yarn is kept under control via a roller and then sent to twisting. Thus the area called "spinning triangle" has almost been removed.

Thus, the improvement in the characteristics of the yarns such as tenacity and less hairiness is provided. By doing this, it is recognized that the twisting in the yarns is decreased and a soft touch and brightness in woven fabric is obtained, less pilling and increase in performance is provided. The object of this invention is to provide a system to modify the current ring spinning machines to manufacture compact yarn.

Although this modification can be carried out by means of pneumatic-mechanical or mechanical compact yarn systems, in application, as far as known, it is not possible to modify a ring spinning machine to manufacture compact yarn without deteriorating the original ring spinning machine or without bringing about disadvantages to the machine. Main disadvantages of the commonly used pneumatic- mechanical systems are as follows :

- it brings out 8W additional electric consumption per spindle;

- several parts in the system are worn out; - it takes a long time for the modification to manufacture compact yarn and companies suffer from loss of production;

- the perforated aprons or perforated drum used in the system gets clogged and systematic cleaning is required;

- there is the risk of clogging in the air suction unit;

- in case the aprons and perforated drum are clogged, one spindle of the machine or some spindles may not produce standard compact yarn.

If unnoticed, weaving or knitting with substandard yarns creates problem for the textile manufacturers. Because of reasons mentioned above, pneumatic-mechanical systems cause increase in the cost and time loss in the assembly process.

The aim of this invention is to lessen or eliminate the problems encountered in the current compact yarn systems and to provide an easy modification system for current ring spinning machines to manufacture compact yarn. With the proposed solution, it will be possible to modify the ring spinning machines without a substantial structural amendment and in a reversible way to manufacture compact yarns. As a result of this modification, there will be no need to amend the parameters such as drafting pressure, drafting intervals, etc.

With the proposed system the cost of electric, spare parts and assembly-disassembly are decreased comparing to pneumatic-mechanical compact yarn systems. Besides, the presence of substandard yarns encountered in pneumatic- mechanical compact yarn systems are eliminated. With the proposed invention, it is quite easy to replace parts when needed and yarn quality is satisfactory. In order to realize the objects of this invention, mechanical system is preferred for the modification system. In the prior art which is related to the present invention, a system was disclosed in WO2006005207. Although the main object of this reference is to modify the ring spinning machine by using the mechanical compact spinning system on the machine, it brings about several disadvantages as well. In said system, in order to press the delivery top roller upon the front bottom roller and to carry and fix the system to the current pendulum arm, a strong plate spring is used. That spring is not fastened to the pendulum arm directly but is attached to the top roller carrier arm. The pressure thus evolved increases the stable pressure of the top roller for drafting and creates improper drafting. Also, it creates additional load on the front bottom roller and middle bottom roller which in return forces the motor- reductor groups which drive these rollers and increases power consumption.

Besides, overloads on the front bottom roller causes its torsion and thus increases yarn breaks. Also, in this system, compactor balance piece holds too much fiber flies. These flies are caught by the top roller and delivery top roller and combined to the yarn and which in return increases the number of thick and thin places and later causes unusual cuts in the bobbin process. In that system, the surface of the compactor which is pressing down upon front bottom roller is unnecessarily wide and this increases friction forces.

DESCRIPTION OF THE INVENTION

The preferred embodiment of the invention and alternative embodiments will be explained here below in reference to the attached drawings, in which :

Figure 1 is the outlook of the modification system. Figure 2 shows the U-carrier (2) onto which the system carrier (3) holding the spring steel rod (20) that carries the compactors (10) and the rod (9) holding the delivery top rollers (8) are attached.

Figure 3a shows the system carrier (3) that is hung to the U-carrier (2) . It also shows the undulated piece (44) between the arms (23) of the system carrier (3), to the grooves (45) of which the protrusion (22) of the spring steel rod (20) is inserted and cylindrical housing (49) into which the rod (9) holding the delivery top rollers (8) is inserted. Besides, the circular channel (24) and flexible channel (25) provided on the arms (23) of the system carrier (3) to assemble the spring steel rod (20) is shown.

Figure 3b shows the compression spring (37) on the system carrier (3) which is essential for attaching the rod (9) which is carrying the delivery top rollers (8) to the system carrier (3) . The bearing area (36) of the rod (9) carrying the delivery top rollers (8) is mounted into the compression spring (37) . Figure 4a shows the intermediate piece (15) attached between the arms (12) of the U-carrier (2) with clamped ends to which the system carrier (3) is hung.

Figure 4b shows the intermediate piece (15) attached between the arms (12) of the ϋ-carrier (2) with circlip ends to which the system carrier (3) is hung.

Figure 4c is the perspective view of the intermediate piece (15) in Figure 4a.

Figure 5 shows the mounted version of the delivery top rollers (8), the rod (9) holding them (8) and the bearing part (36) thereof.

Figure βa is the perspective view of the compactor (10) .

Figure 6b is the cross sectional perspective view of the compactor (10) . Figure 7 is the view of the flexible spring steel rod (20) holding the compactor (10) as attached to the system carrier (3) and to the compactors (10) through the inclined tip (35) at both ends of the rod (20) .

Figure 8 shows the flexible spring steel rod (20) holding the compactors (10) .

Figure 9a shows an alternative embodiment of the rod (20) as shown in Figure 7. Here, compactors (10a, 10b) compatible to the alternative inflexible rod (27) are attached to the rod (27) and system carrier (3) . Figure 9b shows the assembled rod (27) shown in Figure 9a.

Figure 10 shows an alternative embodiment of the inflexible compactor rod (27) as shown in Figure 9a, wherein the rod

(27) comprises of two symmetrical parts and is attached to the system carrier (3) . Figure 11a is the side cross sectional view of the compactors (10a, 10b) used in Figure 9a and Figure 10.

Figure lib shows an embodiment of the compactors (10a, 10b) shown in Figures 9a and Figure 10. Figure lie is an alternative embodiment of the compactors

(10a, 10b) shown in Figure 9a and Figure 10.

Figure 12a is the side cross sectional view of the system carrier (3) of the compactor (10) attachment system shown in Figure 7.

Figure 12b is the front view of the system carrier (3) of the compactor (10) attachment system shown in Figure 7.

Figure 12c is the top view of the system carrier (3) of the compactor (10) attachment as shown in Figure 7. Figure 13a is the side cross sectional view of the system carrier (3) of the compactor (10a, 10b) attachment system as shown in Figure 9a.

Figure 13b is the front view of the system carrier (3) of the compactor (10a, 10b) attachment system as shown in Figure 9a.

Figure 13c is the top view of the system carrier (3) of the compactor (10a, 10b) attachment system as shown in Figure

9a.

Figure 14a is the side cross sectional view of the system carrier (3) of the compactor (10a, 10b) attachment system as shown in Figure 10.

Figure 14b is the front view of the system carrier (3) of the compactor (10a, 10b) attachment system as shown in

Figure 10. Figure 14c is the top view of the system carrier (3) of the compactor (10a, 10b) attachment system as shown in Figure

10.

Figure 15 is the side cross sectional view of the modification system in Figure 1 as mounted to the pendulum arm.

Figure 16 is the general outlook of another embodiment of the modification system.

Figure 17 is the general outlook of the U-carrier (102) . Figure 18 is the outlook of the system carrier (103) . Figure 19a is the outlook of the compactor system carrier (66) .

Figure 19b is the rear view of the compactor system carrier (66) showing the spring channel (91) .

Figure 20 shows the intermediate piece (115) attached between the arms (112) of the U-carrier (102) .

Figure 21 shows the delivery top rollers (108) and rod

(109) holding them (108) . Figure 22a is the rear view of the assembled system as hung to the ϋ-carrier (102) and pressed by a helical spring

(69) .

Figure 22b is the front view of the system as shown in

Figure 22a. Figure 23 shows the rod (120) holding the compactors (110) .

Figure 24a is the side perspective of the compactor (110) .

Figure 24b is the front perspective of the compactor (110) .

Figure 25 shows the compactors (110) as mounted to the compactor rod (120) .

Figure 26 shows the compactor rod (120) with compactors

(110) assembled to the compactor system carrier (66) . Figure 27 shows the spring (68) of the system carrier (103) . Figure 28 shows the spring (69) of the compactor system carrier (66) .

Figure 29 shows the roving navigator (70) .

Figure 30 shows the stationary part (71) of the roving navigator (70) . Figure 31 shows the loose part (72) of the roving navigator In the present invention related to the modification based mechanical compact yarn system, the principle disclosed in patent No. RU 160973 dated 26 February 1964 was applied. As explained in that reference, a compacting area is provided by placing a mechanical compactor on the front bottom roller between the top roller and delivery top roller.

The material of the compactor must be wear resistant but less than the front bottom roller (6) . The bulge diameter of the front surface of the compactor (10) that is firmly seated onto the front bottom roller (6) must be equal to the diameter of the front bottom roller (6) . Here, utmost care was given to the fact that the system to modify the ring spinning machine to manufacture compact yarn should not bring about additional load to the top roller (4,5) . Therefore, the proposed modification system is carried by the pendulum arm frame (1) (See Fig. 15) . For instance, via a U form carrier (2) fitted onto one of the current pendulum arms, the load is transmitted to the pendulum arm frame (1) and thus no additional pressure is placed on the top rollers (4,5) and front and middle bottom rollers (6, 7) and the drafting pressure stays steady. In other types of pendulum arm, various modifications within the concept of this invention can be conducted. Also, the area between the top roller (5) and delivery top roller (8) are kept free from parts that hold fly, as much as possible.

Also, the diameter of the delivery top roller (8) is reduced and thus the deformation of the yarn geometry is eliminated to a greater degree.

Therefore, a different type of delivery top roller rod (9) is used. Namely, the rod of the top rollers is normally stable and top rollers are rotated on the rod by the ends placed into bearings.

Here in the current invention, the rod (9) holding the delivery top rollers (8) is centrally born and rotated. Delivery top rollers (8) are fixed to the rod (9) holding them (See Fig. 5) .

Preferably, the diameter of the delivery top rollers (8) made of flexible material, is 19 mm or smaller. This bearing system (36) can be any type of bearing or a sliding bearing.

Here, only the compactor channel (19) zone of the front surface of the compactors (10) touching the front bottom roller (6) and top and bottom bands (43) press onto the front bottom roller (6) . In order to do that, the area (52) between those two bands (43) are partly recessed to diminish the friction area and surfaces (See Fig. 6a, 6b) . On the other hand, roving guide setup is closed, the rear roving guide condenser (11) is brought in line with the compactor channel (19) however as the cots and aprons are worn out on that line, spring steel rod (20) along with the compactors (10) is moved to the right or to the left and the process is continued with the same cots and aprons on a different' line. In order to bring the compactor channel (19) in line with the fiber band, the roving guide apparatus and thus the condensers (11) on it are moved that much at the same direction.

In the present system, it is provided to work on at least three different lines. Consequently, not only the life time of the aprons and cots are extended but also the drawbacks in conveying the fiber band to the compactor (10) with an angle are eliminated. Another aspect here is that, the delivery top rollers (8) and compactors (10) are fixed rigidly to a system carrier (3) which is stably connected to the U-carrier (2) in order to prevent the sliding and lateral movements thereof. (See Fig. 1,3 a, 3 b) .

In the present invention, the U-shaped carrier (2) is fitted onto the pendulum arm frame (1) (Figure 1, 2, 15) . The U-carrier arm (12) is designed so as not to deteriorate the cleaning felts (not shown). In one embodiment (Fig. 15) , the fastening means (13) is fixed to the pendulum arm frame (1) through the opening (26) provided on the U- carrier (2) .

There is one or more lateral protrusions (14) provided at each inside wall of the arms (12) against upward pressure and they apply pressure to the pendulum arm frame (1) from below. The parts of the lateral protrusions (14) pressing the front side of the pendulum arm frame (1) provide the assembly of the U-carriers (2) onto the pendulum arm frames (1) proportionately. In other words, through the machine the distance between the delivery top roller (8) and front bottom roller (6) will be equal and thus the pressure applied to the front bottom roller (6) by the delivery top rollers (8) and compactors (10) will be equal as well. The system carrier (3) (Figure 3a) is hung loosely to the intermediate piece (15) fixed between the arms (12) of the U-carrier (2) internally (See Figure 4a, 4b, 4c) (Figure 1, 15) . In this manner, the lateral movements of the system carrier (3) are prevented. The outer distance between the arms (23) of the system carrier (3) is shorter than the internal distance between the arms (12) of the U-carrier (2) . Thus, this provides a smooth rotation of the system carrier arms (23) between the U-carrier arms (12) .

The axis of the intermediate piece (15) is parallel to the axis of the front bottom roller (β) . The body of the intermediate piece (15) that stays between the two arms (12) of the U-Carrier(2) is cylindrical but the ends thereof is quadrate. On the cylindrical part, a slit (18) is opened for the attachment of the plate spring (17) pressing the system carrier (3) to the front bottom roller (6) (See Fig. 4a, 4 b, 4 c) .

The dimensions of the quadrate parts at the ends of the intermediate piece (15) are unequal; one end is bigger than the other and it fits into the aperture (50) next to the arm (12) of the U- carrier (2) . Other end is inserted into the quadrate channel (51) provided in the other arm (12) of the U-carrier (2) to immobilize the intermediate piece (15) against rotation.

A circlip (16) is attached to the smaller quadrate end of the intermediate piece (15) (Fig. 4b) or as seen in Figure 4a and 4c, the smaller quadrate end of the piece (15) is provided with a clamp in order to fix the intermediate piece (15) between the arms (12) of the U-carrier (2) (See Fig. 1,15) . A rod (9) holding the delivery top rollers (8) and a spring rod (20) holding the compactors (10) are attached to the ^■ system carrier (3) . A protrusion (22) in the shape of a reverse, outward "U" letter is provided centrally on the plate spring rod(20) . The system carrier (3) is pushed down towards the front bottom roller (6) by means of a plate spring (17) which is hung to the intermediate piece (15) and thus the delivery top rollers (8) and spring steel rod (20) along with the compactors (10) press upon the front bottom roller (6) (See Fig. 1,15) . The pressure exerted by the spring that is pressing the delivery top rollers (8) and thus compacted yarn towards the front bottom roller (6), is as minimum as to prevent the rear movement of the twisting after delivery top roller (8) . Helical spring or a pneumatic system can be replaced with the plate spring (17) . The axes of the delivery top roller (8), compactors (10) and top rollers

(5) are parallel to each other. The delivery top rollers (8) press onto the front bottom roller (6) at the point where the yarn leaves the compactors (10) .

Usually, the rod of the top rollers is stable and the top roller is rotated around it by bearing on it at the ends. The rod (9) holding the delivery top rollers (8) is born centrally and rotated. The diameter of the delivery top rollers (8 ) are 19 mm or smaller. In Figure 5, an embodiment is shown where the rod (9) is attached with a ball bearing. This bearing part (36) can be any type of bearing or a slide bearing. The rod (9) holding the delivery top rollers (8) is attached to the system by fitting the bearing part (36) to the compression springs (37) fixed onto the system carrier (3) (See Figure 3b, 5) As seen in Figure 15, the compactors (10) located between the top rollers (5) and delivery top rollers (8) and pressing onto the front bottom roller (6), are connected to each other internally via a circular rod (20) (See Figure 7,8) . The spring steel rod (20) that holds the compactors (10) also presses the compactors (10) to the front bottom roller

(6) . The pressure of the spring is sufficient enough to hold down the compactors (10) to the front bottom roller (6) at the front side.

As seen in Figure 7, the hooked end (35) of the spring steel rod (20) is inserted into a bulge (21) provided in the compactor (10) and also on the compactor channel (19) and the compactors (10) are placed onto the rod (20) loosely. The protrusion (22) provided on the spring steel rod (20) loosely enters into the grooves (45) (Fig. 3a) on an undulated structure (44) mounted between the arms (23) of the system carrier (3) and the position of the compactor rod (20) and thus the compactors (10) are stabilized. The width of those grooves (45) is wider than the diameter of the rod (20) and the distance between the axes is equal to the out-to-out distance of the protrusion (22) . Spring steel rod (20) is attached to a circular channel (24) provided at the ends of the system carrier arm (23) through a flexible channel (25) diameter of which is smaller than the diameter of the rod (20) (See Fig. 3a, 7, 8) .

In mechanical compacting systems, in order to direct the yarn to the compactor channel (19) without an angle, the roving guide apparatus is disabled, the condensers (11) on that apparatus are brought in line with the compactor channel (19) and they work on the same line (See Figure

15) . As the cots and aprons are worn out faster comparing to the conventional systems, in order to save in cots and aprons and to work on the cots and aprons on another line, the rod protrusion (22) is inserted into a groove (45) of the undulated structure (44) . Thus, the compactors (10) are slided automatically to both sides. The outlets of the roving guide condensers (11) are brought in line with the compactor channel (19) and the process is continued (See Figure 3a, 3b) .

As seen in Figure 6a, one transverse band (43) at the top and bottom of the compactors (10) and the compactor channel (19) area press onto the front bottom roller (6) . The bottom zone between the bands (43) is hollow except the compactor channel (19) area and thus it is out of touch with the front bottom roller (6) . Consequently, the friction surface is diminished and besides the elastic range of the spring steel rod (20) is obtained.

Figure 6b shows the cross sectional view of the compactor (10) .

As seen in Figures 9a and 9b, in order to press the symmetrical compactors (10a, 10b) to the front bottom roller (6) by a system from the compactors' inside (10a, 10b), instead of a spring steel rod (20), a round single piece press rod (inflexible rod) (27) made of a relatively non-resilient material can also be used. Rod (27) made up of two pieces (27a, 27b) and these pieces are connected through an intermediate piece (28) and it is inserted through the channels (63) on the arms (23) of the system carrier (3) .

The ends of the single piece rod (27) carry rollers (29) diameters of which are bigger than its own diameter. Single piece rod (27) presses the compactors (10a, 10b) attached to its ends onto the front bottom roller (6) thanks to a plate spring (30) mounted to the system carrier (3) . The position of the compactor (10a, 10b) is adjusted at one direction via circlips (34) on the rod (27) and via abutting the roller (29) to the channel of the single piece rod (27), which has a smaller diameter than the roller (29), at the other direction. Moreover, in order to work on various lines and to slide the compactors (10a, 10b) along with the single piece rod (27) to lock the position, circlips (34) are used instead of the protrusions (22) for which additional 5 circlip housings (31) are provided on the single piece rod (27) . The distance between two circlips (34) (a) is equal to the width of the arms (23) of the system carrier (3) . As the single piece rod (27) is slided towards each side laterally along with the compactors (10a, 10b), the circlipsQ (34) are inserted into the hollow circlip housings (31) abutting the arms (23) of the system carrier (3) . In Figure 10 an alternative embodiment shows that compactor (10a, 10b) connection system can be realized with a two piece rod (53a, 53b) . The differences comparing to the5 single piece rod (27) are that each end of each rod piece (27) is pressed by means of a separate plate spring (32), which is mounted on the system carrier (3), and also the channels (33) , which two piece rods pass through, on the arms (23) of the system carrier (3) are conical-shapedQ to ensure the proper movement of the two piece rods (53a, 53b) . (Figure 14a)

In the compactor (10a, 10b) connection systems in Figure 9a and 10, the compactors (10a, 10b) are placed between the top roller (5) and delivery top roller (8) with one or two5 narrow outward extensions (38) as seen in Figure 11a. One or two protrusions (39) located at the outer end of that extension (38) limit the rotation of the compactors (10a, 10b) around the two-piece rod (53a, 53b) when the pendulum arm is released and lifted. The surfaces of those0 protrusions (39) are as small as possible so as not to attract fibre flies. A further embodiment of this invention is shown in Figure 16 where the modification system presses the delivery top rollers (108) through the system carrier (103), and compactor rod (120) carrying the compactor (s) (110) through the compactor system carrier (66) to the front bottom roller (6) via helical springs (68,69) one of which (68) is hung to the intermediate piece (115) pressing the system carrier (103) and the other (69) to the pin (67) mounted between the arms (123) of the system carrier (103) pressing the compactor system carrier (66) . The ϋ- carrier (102) is fitted onto the pendulum arm frame (1) of ring spinning machines and fastened to the pendulum arm by screws through the apertures (93, 126) provided on top surface of the U-carrier (102) so that the pendulum arm frame (1) got longer. The system carrier (103), which carries the rod (109) holding the delivery top rollers (108), is hung to that U-carrier (102) .

As seen in Figure 18, this system carrier (103) is hung to the U-carrier (102) by means of an intermediate piece (115) through the apertures (147) provided on the system carrier (103)

The intermediate piece (115) , which is shown in Figure 20, is inserted through the apertures (147) provided on the system carrier (103) and through the apertures (157) provided at the end of the U-carrier (102) .

And consequently the system carrier (103) is hung to the U carrier (102) . As one end of the said intermediate piece (115) is provided with a circlip (73) and the other end is wider than its diameter, it is fitted between the arms (112) of the U-carrier (102) . There is a protrusion (74) at the center of the housing (149) of the system carrier (103)which has a smaller diameter than that housing (149) . The rod (109) holding the delivery top rollers (108) is inserted appropriately to the housing (149) of the system carrier (103) in a way that said protrusion (74) on the system carrier (103) can be placed into the channel (75) provided at the center of the rod (109) holding the delivery top rollers (108) and accordingly the sliding of the rod (109) to either side during operation is prevented.

The rod (109) holding the delivery top rollers (108) as seen in figure 21 is inserted into a housing (76) provided at the end of the compactor system carrier (66) as seen in Figure 19a and 19b, so as to provide that the compactor rod housing (77) faces the front bottom roller (6) . There are one or more spherical indents (78) provided on the compactor rod housing (77) on the said compactor system carrier (66) at specific intervals.

There is an aperture (81) that passes internally and laterally through the extension (138) of the compactor (110) as seen in Figure 24a and 24b. The height of that aperture (81) is longer than the width. In figure 23, the restraints (83) at the end of the compactor rod (120) are smaller than this aperture (81) . The compactor rod (120) passes through the compactor apertures (81) at the ends and the compactors (110) are placed into the housings (82) at the end of the housings of the rod (120) .

The width of those housings (82) is wider than the compactor extensions (138) so as to loosely fit there. The sphere (79) on the rod (120) is loosely inserted into the spherical housing (78) provided on the compactor system carrier (66) by slightly stretching and in a way that the crescent shaped spherical protrusion (80) stays out. At that point, the compactor rod (120) rotates with an angle so as to move the restraint part (83) of the rod to be in placed transversely to the aperture (81) of the compactor (110) and thus prevents the release of the compactors out of the narrowed area (82) Since the diameter of the narrowed area (82) of the compactor rod (120) and the width of the compactor aperture (81) are smaller than the main diameter of the compactor rod (120), dislocation of the compactors ( 110) inwardly is prevented.

Since the compactor extension (138) is located between the top roller (5) and delivery top roller (108), as the pendulum arm is released and lifted, the rotation of the compactors (110) around the compactor rod (120) is prevented.

As the radius of the spherical protrusion (80) is bigger than the radius of the housing (77) of the compactor system carrier(βδ), the compactor rod (120)holds that position and cannot rotate.

As the aprons and cots of the ring spinning machine are worn out in time, the compactor rod (120) is removed from compactor system carrier housing (78) and then inserted into another housing (78) provided there. Consequently, as the compactors (110) are slided laterally, the aprons and cots proceed to work on a different line. This will provide a longer life for aprons and cots and also it will be more economical for the manufacturer since the lives of those parts get longer. Helical springs (68, 69) are used to push the two system carriers (103, 66) hung on the ϋ-carrier (102) onto the front bottom roller (6) (Figure 27, 28) . As seen in Figures 22a and 22b, the helical spring (68) attached to the intermediate piece (115) pushes the system carrier (103) onto the front bottom roller (6) . Said spring (68) is backed by a lid (64) mounted from top by means of a pin (65) inserted through the apertures (89) provided on the arms (112) of the ϋ-carrier (102) (Figure 16) .

The helical spring (69), which is used to push the compactor system carrier (66) onto the front bottom roller (6), is fitted on a pin (67) inserted through the apertures (90) provided on the system carrier (103) . One end of said spring (69) is hung over the system carrier (103) and other end pushes the compactor system carrier (66) and thus the compactors (110) onto the front bottom roller (6) by pressing the channel (91) on the compactor system carrier (66) .

A roving band navigator (70) is recommended to be used with the present invention so as to increase efficiency and performance of the system. In order to navigate the roving band as shown in figure 29 to proceed towards the compactor channel (119) on a line, a roving navigator (70) made up of two parts can be used. The stationary part (71) is attached centrally to the back of the rod (96) holding the middle top rollers (4), which can be seen in Figure 15, as shown in Figure 30 through the housings (84) provided on the stationary part (71) . The loose part (72), which is shown in Figure 31, is inserted into the channel (86) on the stationary part (71) by fitting the protrusion (87) provided on the loose part (72) into the indents (85) provided on the stationary part (71) .

When it is desired to slide the compactors (110) to work on a different line, the loose part (72) is inserted into another indent (85) corresponding to a new line on roving stationary part (71) .

Roving band passes through the roving slit (88) of the loose part (72) . The axis distance of the said roving slits (88) is equal to the gauge of the top rollers.

It is to be understood that various modification can be made without departing from the essence of the invention as described here above and in the claims.

Claims

1. A system to modify the current ring spinning machines to manufacture compact yarn, to be mounted onto the pendulum arm-frame (1) of the ring spinning machine containing:

- a U-carrier (2,102) having one or more arms (12,112) formed as hollow structure and extending to the front roller of the pendulum arm;

- one or more intermediate pieces (15,115) inserted between the arms (12,112) of the ϋ- carrier (2,102) to which one or more system carriers (3,103) are hung to the arms (12,112) loosely;

- a system carrier (3,103) that is hung to the intermediate piece (15,115) between said arms (12,112), comprising a cylindrical hollow housing (49,149) at one end and one or more parallel arms (23,123) at the other end of the carrier (3,103) on which one or more apertures (47,147) are provided;

- a rod (9,109) to carry one or more delivery top rollers (8,108) inserted into the cylindrical housing (49,149);

- One or more compactor rods (20, 120, 27, 53a, 53b) , which are mounted on the system carrier (3) and the compactor system carrier (66), to carry the compactors (10,110);

- One or more compactors (10,110) mounted on the said rods (20, 120, 27, 53a, 53b) ;

- a compactor system carrier (66) having a housing (76) to be mounted on the rod (109) holding the delivery top rollers (108) provided at one end of the carrier (66) and another housing (77) at the other end wherein one or more spherical indents (78) are provided on the said compactor rod housing (77) to mount the rod (120) that holds the compactors (110) and a spring channel (91) at the back of the said compactor system carrier (66) .

2. A system as claimed in claim 1 wherein an undulated piece (44) is provided between the arms (23) of the said system carrier (3) having one or more grooves (45) .

3. A system as claimed in claim 2 wherein a circular channel (24) and a flexible channel (25) are provided on said arms (23) of the system carrier (3) to insert a rod (20, 27, 53a, 53b) thereto.

4. A system as claimed in claim 3 wherein said rod (20, 27, 53a, 53b) is a spring steel rod.

5. A system as claimed in Claim 1 wherein a protrusion (74) having a diameter smaller than the diameter- of the housing (149) is provided within the cylindirical housing (149) .

6. A system as claimed in claim 1 wherein an aperture (90) is provided on the arms (123) of the system carrier (103) to mount the pin (67) holding the helical spring (69) .

7. A system as claimed in claim 1 wherein one or more lateral protrusions (14,114) are provided inside of each wall of the arms (12,112) of the ϋ-carrier (2,102) .

8. A system as claimed in claim 1 wherein said arms (112) are connected with a wall at their ends.

9. A system as claimed in claim 1 wherein apertures

(89,157) are provided on the arms (112) of the U- carrier (102) for the assembly of a movable lid (64) through a pin (65) mounted to apertures (89) to back up a spring (68) and for the assembly of the intermediate piece (115) to the U-carrier (102) by mounting through the apertures (157) .

10. A system as claimed in claim 1 wherein apertures and openings (26, 93, 126) are provided on top surface of the U-carrier (2,102) for the assembly of the U-carrier (2,102) to the pendulum arm-frame (1) via fastening means .

11. A system as claimed in claim 1 wherein said intermediate piece (15, 115) having an axis parallel to the axis of the front bottom roller (6) .

12. A system as claimed in claim 11 wherein the intermediate piece (15,115) is substantially cylindrical .

13. A system as claimed in claim 1 wherein a slit (18) is provided on said intermediate piece (15) for the attachment of the plate spring (17) thereto to press the system carrier (3) to the front bottom roller (6) .

14. A system as claimed in claim 1 wherein one or both ends of said intermediate piece (15, 115) are quadrate.

15. A system as claimed in claim 14 wherein dimensions of 5 said quadrate ends are unequal.

16. A system as claimed in claim 1 wherein the diameter of said delivery top rollers (8) is about 19 mm or smaller. 0

17. A system as claimed in claim 1 wherein delivery top rollers (8) are attached to the rod (9) which is stable and centrally born and rotated. 5

18. A system as claimed in claim 1 wherein the modification system presses the delivery top rollers (108) through the system carrier (103), and compactor rod (120) carrying the compactor (s) (110) through the compactor system carrier (66) to the front bottom Q roller (6) via helical springs (68,69) one of which (68) is hung to the intermediate piece (115) pressing the system carrier (103) and the other (69) to the pin (67) mounted between the arms (123) of the system carrier (103) pressing the compactor system carrier(66) .5

19. A system as claimed in claim 1 wherein one or more compactors (110) are provided on the compactor rod (120) which is inserted into the housing (77) of the compactor system carrier (66) and the compactors (110)0 are attached to the end sections of the compactor rod (120) .

20. A system as claimed in claim 19 wherein the housing (77) includes one or more indents (78) into which the sphere (79) of the rod (120) is inserted.

21. A system as claimed in claim 1 wherein the diameter of the narrowed areas (82) at the end sections of the rod

(120) are smaller than the main diameter of the rod (120); some restraint parts (83) are provided at the ends of the rod (120); a sphere (79) with a crescent shaped spherical protrusion (80) is placed centrally on the rod (120) .

22. A system as claimed in claim 1 wherein said compactors

(10,110) are provided with an extension part (38,138)and also a yarn channel (19,119) .

23. A system as claimed in claim 22 wherein the extension part (138) of the compactor (110) has one or more through apertures (81)

24. A system as claimed in claim 22 wherein said compactors (10) have through or partly apertures (40) to place the compactor rods (20, 27, 53a, 53b)

25. A system as claimed in claim 21 wherein the radius of said spherical protrusion (80) is bigger than the radius of the housing (77) of the compactor system carrier ( 66) .

26. A system as claimed in claim 1 wherein the system also includes a roving navigator (70) comprising a stationary part (71) having indents (85) and a channel (86) provided at the back of the part (71) centrally attached to the back of the rod (96) holding the middle top rollers through the housing (84) provided on it (71); and a loose part (72) which is substantially in the form of a reverse "U" where roving slits (88) are provided at the legs of the reverse "U" form and provided with a protrusion (87) on the top part of the loose part (72) to be fitted into one of the indents (85) and into the channel (86) provided on the stationary part (71) .

27. A system as claimed in claim 26 wherein the stationary part (71) and the loose part (72) are formed integrally.

28. A system as claimed in claim 26 wherein the axis distance of the said roving slits (88) is equal to the gauge of the top rollers.

29. A system as claimed in claim 1 wherein the compactor rod (20) has hooked ends (35) and a protrusion (22) in the shape of a reverse outward "U" letter provided centrally on it (20)

30. A system as claimed in claim 1 wherein the compactor rod (27) has rollers (29) at the ends.

31. A system as claimed in claim 1 wherein the rod (109) carrying the delivery top rollers (108) has a channel (75) at the center of the rod (109) to place into the protrusion (74) of the system carrier (103)

32.A system as claimed in claim 1 wherein transverse bands (43) are provided at the top and bottom of the compactors (10,110) and the compactor channel area (19, 119)press onto the front bottom roller (6) .

33.A system as claimed in claim 1 wherein the bottom zone between the bands (43) is hollow except the compactor channel area (19) .