Automatic yarn piecing robot for ring spinning machines

The automatic yarn piecing robot for ring spinning machines addresses yarn breaks by using spindle belt release and external spindle drive to reconnect broken yarn ends, improving efficiency and quality by minimizing human intervention.

WO2026101501A1PCT designated stage Publication Date: 2026-05-15GULLE ENTEGRE TEKSTIL ISLETMELERI EMLAK DANISMANLIGI SANAYI VE TICARET ANONIM SIRKETI
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
GULLE ENTEGRE TEKSTIL ISLETMELERI EMLAK DANISMANLIGI SANAYI VE TICARET ANONIM SIRKETI
Filing Date
2025-10-31
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Yarn breaks during the production process in ring spinning machines lead to production losses and quality issues, exacerbated by human error and resource scarcity, necessitating an automated solution for rapid yarn piecing.

Method used

An automatic yarn piecing robot for ring spinning machines that operates without removing the cop from the ring machine, using spindle belt release and external spindle shaft drive to locate and reconnect broken yarn ends, with mechanisms for yarn end finding, reserve yarn feeding, and transfer under the traveler.

Benefits of technology

Enables rapid, human-independent yarn piecing, reducing production losses and quality issues by minimizing human intervention, enhancing efficiency and quality, and reducing dependency on labor.

✦ Generated by Eureka AI based on patent content.

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Abstract

Yarn breaks that occur during production cause direct and indirect interruptions in the production process. The yarn production is directly interrupted at the spindle where the yarn break occurs. An indirect interruption of production occurs as follows: the fibers that have emerged from the drafting system (130) at the spindle where the yarn break occurs are sucked in by the suction pipes without being twisted. If the suction pipes become clogged and cannot perform their functions, the untwisted yarns are scattered in the form of flies in the production area. This situation negatively affects the production of other spindles that are close to the spindle where the yarn break occurred. This situation causes additional yarn breaks in some spindles and leads to quality problems due to the mixing of fly waste with the yarns being twisted. In addition to yarn breaks that occur during the production process, there is another type of break called doffing-related end breaks that causes production loss. Doffing-related end breaks are a part of the production process and occur within certain limits during every doffing process. As a result, thanks to the designed automatic yarn piecing robot, yarn breaks in the production process and doffing-related end breaks will be quickly pieced automatically, independent of humans.
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Description

[0001] AUTOMATIC YARN PIECING ROBOT FOR RING SPINNING MACHINES

[0002] Related Art

[0003] The invention relates to ring spinning machines used in yarn production in the textile industry. The said invention comprises a method and an apparatus that enable the rapid, automatic, and human-independent piecing of breakages yarns occurring during the production process and on the doffing-related end of the spinning units in ring spinning machines.

[0004] State of Art

[0005] In today due to increasing competition, the decreasing availability of human resources, and the need for higher productivity, machine manufacturing companies have recently been conducting extensive research and development activities on automatic yarn piecing robots.

[0006] As a result of research conducted on the subject, two patent applications by the Switzerlandbased company Rieter Holding Ltd., namely CN115404578A and CN115896998A, have been identified.

[0007] In our system, the fundamental principle is that the process operates without removing the cop from the ring machine; instead, the spindle belt is released, and the spindle shaft is driven externally to carry out the operation. In Rieter’s application, the spindle brake (48) is stopped by part number 291 , and the cop (44) is removed from the ring machine and transferred to a defined park position on the automatic yarn piecing robot by part number 144, and at this point, the yarn end finding and reserve yarn feeding processes are carried out. Additionally, passing the yarn with the found end under the traveler is done with a very different apparatus and method. The yarn whose end has been found is wound around rods numbered 1341 for reserve purposes. In our method, however, without the need for reserve winding, the yarn’s length and tension are controlled by the clockwise and counterclockwise rotations of the spindle. Another document is the EP 3 643 819 A1 application by the India-based company Lakshmi Machine Works Ltd., which relates to finding the broken yarn end using a suction nozzle numbered 5, positioned at the top of the cop.

[0008] The EP 3 650 381 A1 application by the India-based company Lakshmi Machine Works Ltd. relates to separating the broken yarn end from the yarn bundle (5) using scanner number 7 and suctioning it from the top of the cop with suction nozzle number 2. The EP 3 967 798 B1 application by the India-based company Lakshmi Machine Works Ltd. relates to positioning the traveler using compressed air delivered from a relatively distant location through tubes numbered 6 and 7. Additionally, it involves suction from the top of the cop using suction nozzle number 15.

[0009] The EP 3 556 919 B1 application by the India-based company Lakshmi Machine Works Ltd. relates to an apparatus that positions the yarn drawn by yarn suction nozzle number 14 between the outlet cot and the outlet cylinder. The EP 3 567 142 B1 application by the Indiabased company Lakshmi Machine Works Ltd. describes the process of passing the found yarn end (10) under the traveler (12). It has no relation to our method.

[0010] Another application is the EP 3 748 054 B1 application of the India-based Lakshmi Machine Works Ltd.: The process of passing the end-found yarn (3) through the yarn router (13) is described. The EP 4 249 655 A1 application by the India-based company Lakshmi Machine Works Ltd. describes the use of compressed air applied at points (9a, 9b, 9c) and (6a, 6b, 6c) to locate the yarn end within the yarn bundle. The EP 3 981 898 A1 application of India-based Lakshmi Machine Works Ltd. covers the mechanical braking of the spindle shaft by friction force with parts 8a and 8b for breaking the spindle shaft. The EP 3 913 121 A1 application by the India-based company Lakshmi Machine Works Ltd. relates to an apparatus that positions the located yarn end between the outlet cot and the outlet cylinder.

[0011] Technical Problems That the Invention Aims to Solve

[0012] Thanks to this invention, in a typical ring spinning machine, yarn breakages occurring during the production process, as well as yarn breakages at the doffing-related, can be automatically and rapidly pieced without human intervention.

[0013] If yarn breakages are not tied quickly, the spindle where the breakage occurs directly causes a production loss and indirectly leads to both productivity and quality losses. For example, fibers emerging from the drafting system are sucked in by pneumophilic suction pipes without undergoing any twisting. If the pneumophilic suction pipes become clogged and fail to perform their function, the untwisted yarns are scattered throughout the production region as flies. This situation negatively affects the production of the spindles adjacent to the one where the break occurred. These issues manifest as additional yarn breaks in nearby spindles and as quality problems caused by the fly waste mixing into the yarn during the twisting process.

[0014] The textile industry is a labor-intensive sector. Nowadays, there are increasing difficulties in accessing qualified human resources. In addition, there are numerous human-related error sources present throughout the production process.

[0015] Thanks to this invention, any yarn breakage occurring in ring spinning machines will be resolved quickly and independently of human intervention. Thus, increases in efficiency and quality will be achieved, dependency on human labor will be reduced, competitiveness will be enhanced, and the invention will pave the way for designing automation solutions for other yarn production processes as well.

[0016] Figure 1 : 3D view of a typical ring spinning machine section

[0017] Figure 2: Front view of a typical ring spinning machine section

[0018] Figure 3: Side view of a typical ring spinning machine section

[0019] Figure 4: 3D view of a typical ring spinning machine spindle assembly

[0020] Figure 5: Side view of a typical ring spinning machine spindle assembly

[0021] Figure 6: 3D view of a yarn piecing robot

[0022] Figure 7: Front view of the yarn piecing robot

[0023] Figure 8: Side view of the yarn piecing robot

[0024] Figure 9: 3D view of the yarn piecing robot body

[0025] Figure 10: Front view of the yarn piecing robot body

[0026] Figure 11 : Side view of the yarn piecing robot body

[0027] Figure 12: 3D view of the yarn piecing robot mechanisms

[0028] Figure 13: Side view of the yarn piecing robot mechanisms

[0029] Figure 14: 3D view of the spindle belt release and the spindle drive mechanism Figure 15: 3D view of the spindle belt release and the spindle drive mechanism with a typical ring spindle assembly

[0030] Figure 16: Top view of the spindle belt release and the spindle drive mechanism

[0031] Figure 17: Top view of the spindle belt release and the spindle drive mechanism with a typical ring spindle setup

[0032] Figure 18: 3D view of the spindle belt release mechanism

[0033] Figure 19: Side view of the spindle belt release mechanism

[0034] Figure 20: Top view of the spindle belt release mechanism

[0035] Figure 21 : Simulation of the spindle belt release mechanism (simulation of the left spindle shaft release)

[0036] Figure 22: 3D view of the spindle belt release mechanism with a typical ring spindle assembly

[0037] Figure 23: 3D view of the spindle drive mechanism (Left spindle shaft drive)

[0038] Figure 24: 3D view of the spindle drive mechanism (Right spindle shaft drive)

[0039] Figure 25: Top view of the spindle drive mechanism with a typical Ring spindle assembly

[0040] Figure 26: 3D view of the spindle drive mechanism with a typical Ring spindle assembly

[0041] Figure 27: 3D view of the yarn piecing and reserve yarn feeding mechanism with a typical ring spindle setup

[0042] Figure 28: Side view of the yarn piecing and reserve yarn feeding mechanism with a typical ring spindle setup

[0043] Figure 29: 3D view of the subassemblies of the yarn piecing and reserve yarn feeding mechanism, along with a typical ring spindle assembly

[0044] Figure 30: Top view of the subassemblies of the yarn piecing and reserve yarn feeding mechanism, along with a typical ring spindle assembly

[0045] Figure 31 : 3D view of the end-finding mechanism with a typical ring spindle assembly

[0046] Figure 32: 3D view of the end-finding mechanism in the parked position Figure 33: 3D view of the end-finding mechanism in its position of contact with the yarn bundle

[0047] Figure 34: 3D view of the traveler centering mechanism with a typical ring spindle assembly

[0048] Figure 35: Top view of the traveler centering mechanism positioned on the ring

[0049] Figure 36: Top view of the traveler centering mechanism positioned on the ring

[0050] Figure 37: 3D view of the positioning of the traveler centering mechanism on the ring

[0051] Figure 38: Detail "A" of the 3D view of the positioning of the traveler centering mechanism on the ring

[0052] Figure 39: Top view of the traveler centering mechanism rotating and moving away from the ring

[0053] Figure 40: 3D view of the traveler centering mechanism rotating and moving away from the ring

[0054] Figure 41 : Detail “B” of the 3D view showing the traveler centering mechanism rotating and moving away from the ring

[0055] Figure 42: Top view of the traveler centering and yarn positioning mechanism

[0056] Figure 43: 3D view of the traveler centering and yarn positioning mechanism

[0057] Figure 44: Side view of the traveler centering and yarn positioning mechanism

[0058] Figure 45: Bottom view of the traveler centering and yarn positioning mechanism

[0059] Figure 46: Additional 3D view of the traveler centering and yarn positioning mechanism

[0060] Figure 47: 3D view of the broken yarn end finding and reserve yarn feeding mechanism with a typical ring spindle setup

[0061] Figure 48: Side view of the yarn break finding and reserve yarn feeding mechanism with a typical ring spindle setup

[0062] Figure 49: 3D view of the yarn break finding and reserve yarn feeding mechanism with a simplified typical ring spindle setup

[0063] Figure 50: Top view of the yarn break finding and reserve yarn feeding mechanism Figure 51 : 3D view of the positioning of the broken yarn end finding and reserve yarn feeding mechanism in the ring region

[0064] Figure 52: 3D view of the positioning of the broken yarn end finding and reserve yarn feeding mechanism in the ring region "C" detail

[0065] Figure 53: Side view of the broken yarn end finding and reserve yarn feeding mechanism

[0066] Figure 54: Position of the broken yarn end finding and the operation of the reserve yarn feeding head with the reserve cop

[0067] Figure 55: Sectional view of the working position of the yarn end finding and reserve yarn feeding head with the reserve cop

[0068] Figure 56: 3D view of the yarn end finding and reserve yarn feeding head

[0069] Figure 57: Side view of the yarn end finding and reserve yarn feeding head

[0070] Figure 58: 3D view of the yarn transfer mechanism (+90 position)

[0071] Figure 59: 3D view of the yarn transfer mechanism, detail "D" (+90 position)

[0072] Figure 60: 3D view of the yarn transfer mechanism (-90 position)

[0073] Figure 61 : 3D view of the yarn transfer mechanism, detail "E" (-90 position)

[0074] Figure 62: 3D view of the positioning of the ring region of the yarn transfer mechanism

[0075] Figure 63: Side view of the positioning of the ring region of the yarn transfer mechanism

[0076] Figure 64: Detail "F" of the 3D view of the positioning of the ring region of the yarn transfer mechanism

[0077] Figure 65: 3D view of the positioning of the balloon breaker region of the yarn transfer mechanism

[0078] Figure 66: Side view of the positioning of the balloon breaker region of the yarn transfer mechanism

[0079] Figure 67: Detail “G” of the 3D view of the positioning of the balloon breaker region of the yarn transfer mechanism

[0080] Figure 68: 3D view of the positioning of the yarn router region of the yarn transfer mechanism

[0081] Figure 69: Side view of the positioning of the yarn router region of the yarn transfer mechanism Figure 70: "H" detail of the 3D view of the positioning of the yarn router region of the yarn transfer mechanism

[0082] Figure 71 : 3D view of the positioning of the outlet cot and outlet roller region of the yarn transfer mechanism

[0083] Figure 72: Side view of the positioning of the outlet cot and outlet roller region of the yarn transfer mechanism

[0084] Figure 73: Detail “I” of the 3D view of the positioning of the outlet cot and outlet cylinder region of the yarn transfer mechanism

[0085] Figure 74: 3D view of process step 1 of the process in which the found yarn end is passed under the bottom part of the traveler

[0086] Figure 75: Top view of process step 1 in which the found yarn end is passed under the bottom part of the traveler

[0087] Figure 76: 3D view of detail “J” of process step 1 in which the found yarn end is passed under the bottom part of the traveler

[0088] Figure 77: 3D view of process step 2 in which the found yarn end is passed under the bottom part of the traveler

[0089] Figure 78: Top view of process step 2 in which the found yarn end is passed under the bottom part of the traveler

[0090] Figure 79: 3D view of detail "K" of step 2 in which the found yarn end is passed under the bottom part of the traveler

[0091] Figure 80: 3D view of process step 3 in which the found yarn end is passed under the bottom part of the traveler

[0092] Figure 81 : Top view of process step 3 in which the found yarn end is passed under the bottom part of the traveler

[0093] Figure 82: 3D view of detail “J” of process step 3 in which the found yarn end is passed under the bottom part of the traveler

[0094] Figure 83: 3D view of process step 4 in which the found yarn end is passed under the bottom part of the traveler Figure 84: Top view of process step 4 in which the found yarn end is passed under the bottom part of the traveler

[0095] Figure 85: 3D view of the “J” detail of process step 4 in which the found yarn end is passed under the bottom part of the traveler

[0096] Figure 86: 3D view of process step 5 in which the found yarn end is passed under the bottom part of the traveler

[0097] Figure 87: Top view of detail “J” of process step 5 in which the found yarn end is passed under the bottom part of the traveler

[0098] Figure 88: 3D view of detail “J” of process step 5 in which the found yarn end is passed under the bottom part of the traveler

[0099] 100: Spindle assembly of a typical ring spinning machine

[0100] 101 : Cop

[0101] 102: Yarn bundle (Yarns wound on the cop)

[0102] 102a: Yarn (Yarn with found end)

[0103] 103: Spindle belt (Slippery belt)

[0104] 1 11 : Ring rail

[0105] 1 12: Ring bearing

[0106] 1 13: Ring

[0107] 1 14: Traveler

[0108] 1 15: Breakage sensor

[0109] 1 16: Balloon breaker

[0110] 1 17: Yarn compression bearing

[0111] 121 : Yarn guide (Pig tail)

[0112] 131 : Yarn router

[0113] 132: Outlet cot 133: Outlet cylinder

[0114] 134: Pressure arm

[0115] 141 : Spindle bearing

[0116] 142: Spindle shaft (Left spindle)

[0117] 143: Spindle shaft (Right spindle)

[0118] 144: Spindle fixing bracket

[0119] 151 : Spindle brake

[0120] 161 : Separator

[0121] 171 : Side rail

[0122] 200: Spindle belt release and released spindle drive mechanism

[0123] 210: Spindle belt release mechanism

[0124] 211 : Spindle belt release lever

[0125] 212: Spindle belt release pulley

[0126] 213: Spring-1 (Spindle belt release lever balancing mechanism spring)

[0127] 214: Spring-2 (Spindle belt release lever balancing mechanism spring)

[0128] 215: Centering spring bearing

[0129] 216: Cam track motion cylinder

[0130] 217: Cam track guide

[0131] 218: Cam wheel

[0132] 219: Spindle belt release lever forward-backward motion cylinder

[0133] 220: Spindle belt release lever right-left rotation guide bearing

[0134] 221 : Spindle belt release lever up-down motion cylinder

[0135] 222: Spindle belt release lever cam wheel bearing holes

[0136] 223: Spindle belt release lever bearing 230: Spindle drive mechanism

[0137] 231 : Spindle drive servo motor-1 (For left spindle)

[0138] 232: Spindle drive mechanism motion cylinder (For left spindle)

[0139] 233: Spindle drive belt-1 (For left spindle)

[0140] 234: Spindle drive bearing (For left spindle)

[0141] 235: Spindle drive servo motor-2 (For right spindle)

[0142] 236: Spindle drive mechanism motion cylinder (For right spindle)

[0143] 237: Spindle drive belt-2 (For right spindle)

[0144] 238: Spindle drive bearing (For right spindle)

[0145] 300: Yarn piecing and reserve yarn feeding mechanism

[0146] 310: End finding mechanism

[0147] 311 : End finding cylinder

[0148] 312: End finding scanner

[0149] 313: Yarn piecing and reserve yarn feeding mechanism right-left motion cylinder

[0150] 320: Traveler centering mechanism

[0151] 321 : Traveler centering mechanism forward-backward motion cylinder rotation cylinder

[0152] 322: Traveler centering mechanism forward-backward motion cylinder

[0153] 323: Traveler centering mechanism rotation bearing

[0154] 324: Traveler centering mechanism fixing bearing

[0155] 330: Traveler centering and yarn positioning mechanism

[0156] 331 : Traveler centering support magnet

[0157] 332: Support lever for passing the yarn under the traveler

[0158] 333: Traveler centering (positioning) bearing

[0159] 334: Yarn positioning vacuum port 335: Traveler centering and yarn positioning mechanism connection bearing

[0160] 336: Vacuum transfer hose

[0161] 337: Traveler guiding pneumatic air hose-1

[0162] 338: Traveler guiding pneumatic air hose-2

[0163] 339: Traveler guiding pneumatic air hose-3

[0164] 340: Traveler centering and yarn positioning mechanism carrying lever

[0165] 350: Broken yarn end finding and reserve yarn feeding mechanism

[0166] 351 : Y1 -axis motion servo motor

[0167] 352: Y1 -axis motion cylinder

[0168] 353: Reserve feeding cop connection bearing

[0169] 354: Reserve feeding yarn transfer pneumatic air hose

[0170] 355: Reserve feeding cop

[0171] 356: Reserve yarn feeding transfer pipe

[0172] 357: Yarn holding cylinder-3 (Normally closed position)

[0173] 358: Broken yarn end finding and reserve yarn feeding head connection bearing

[0174] 359: A-axis motion cylinder

[0175] 360: Broken yarn finding and reserve yarn feeding head

[0176] 361 : Broken yarn finding and reserve yarn feeding pipe

[0177] 362: Yarn holding cylinder-1 (Normally closed position)

[0178] 363: Yarn end cutting scissors (Normally closed position)

[0179] 364: Yarn holding cylinder-2 (Normally closed position)

[0180] 365: Vacuum-1 (Reserve yarn vacuuming hose)

[0181] 366: Vacuum-2 (End-finding vacuum hose from cop)

[0182] 367: Pneumatic mini cylinder-1 368: Pneumatic mini cylinder-2 (End cutting shear cylinder)

[0183] 369: Pneumatic mini cylinder-3

[0184] 370: Broken end finding and reserve yarn feeding head bearing

[0185] 380: Yarn transfer mechanism

[0186] 381 : Z1 axis motion cylinder

[0187] 382: Z1 axis motion servo motor

[0188] 383: X1 axis motion cylinder

[0189] 384: X1 axis motion servo motor

[0190] 400: Yarn piecing robot

[0191] 401 : Yarn piecing robot X2-axis motion robot

[0192] 402: Yarn piecing robot X2-axis motion motor rail pressure pulley

[0193] 403: Yarn piecing robot “Yarn piecing and reserve yarn feeding mechanism (300)” up-down motion rails

[0194] 404: Yarn piecing robot “Spindle belt release and released spindle driving mechanism (200)” fixing plate

[0195] 405: Counterweight for balancing the up-down motion of the “Yarn piecing and reserve yarn feeding mechanism (300)”

[0196] 406: Counterweight rope for balancing the up-down motion of the “Yarn piecing and reserve yarn feeding mechanism (300)”

[0197] 407: Pulley of the counterweight rope for balancing the up-down motion of the “Yarn piecing and reserve yarn feeding mechanism (300)”

[0198] 408: Rope eyebolt of the counterweight for balancing the up-down motion of the “Yarn piecing and reserve yarn feeding mechanism (300)”

[0199] 409: Yarn piecing robot X2-axis motion lower rail bearing

[0200] 410: Yarn piecing robot X2-axis motion lower rail

[0201] 411 : Yarn piecing robot X2-axis motion sub carriage 412: Yarn piecing robot X2-axis motion side wheel bearing

[0202] 413: Yarn piecing robot X2-axis motion side wheel

[0203] 501 : Z2-axis motion servo motor

[0204] 502: Z2-axis motion cylinder

[0205] 503: “Yarn piecing and reserve yarn feeding mechanism (300)” carrier bearing

[0206] 504: Mounting plate for “Yarn piecing and reserve yarn feeding mechanism (300)”

[0207] 505: “Yarn piecing and reserve yarn feeding mechanism (300)” synchronized motion nail

[0208] 506: Rope eyebolt bearing for the up-and-down counterweight of the “Yarn piecing and reserve yarn feeding mechanism (300)”

[0209] Description of the Invention

[0210] Today, ring spinning machines use drafting (130) and twisting mechanisms (100) to produce yarns of specific counts. The production process is negatively impacted by yarn breaks. Yarn breaks occur in two ways: those that occur during the production process and those that occur at the doffing-related. An automatic yarn piecing robot is needed to automatically handle these breaks independently of human intervention.

[0211] The installation of the automatic yarn piecing robot (400) to a typical ring spinning machine will be made by the yarn piecing robot X2 axis motion lower rails (410), side rail (171 ) and the carriages (41 1 ) that will move on these rails and the yarn piecing robot X2 axis motion wheels (413). The yarn piecing robot will be positioned on the spindle where the yarn break occurs, thanks to the X2-axis motion motor (401 ).

[0212] The automatic yarn piecing robot (400), which is positioned on the spindle with the yarn break, has three main mechanisms. These mechanisms are;

[0213] 1 ) Spindle belt release and released spindle drive mechanism (200),

[0214] 2) Yarn piecing and reserve yarn feeding mechanism (300),

[0215] 3) Yarn transfer mechanism (380).

[0216] 1 ) Spindle belt release and released spindle drive mechanism (200),

[0217] The contact of the spindle belt (103) with the spindle shaft (142) is cut off by means of the spindle belt release mechanism (210), which is mounted on the spindle belt release and the release spindle drive mechanism (200), thanks to the spindle belt release pulley (212). Since the spindle belt is mounted on the inside of the release pulley (212), it rotates on its own axis when it comes into contact with the spindle belt (103) without damaging the spindle belt (103). This process occurs in the following order;

[0218] The spindle belt release lever up-down motion cylinder (221 ) makes its upward motion. The spindle belt release lever forward-backward motion cylinder (219) moves forward towards the spindle belt (103) and engages the spindle belt release pulley (212) to the rear part of the spindle belt (103).

[0219] The spindle belt release lever up-down motion cylinder (221 ) moves downwards.

[0220] The spindle belt release lever forward-backward motion cylinder (219) makes a linear motion in the reverse direction, ensuring that the spindle belt release pulley (212) applies traction to the spindle belt (103).

[0221] As the linear motion continues, the cam track motion cylinder (216) positions the cam track guide (217) appropriately, and the cam wheel (218), guided by this track, directs the spindle belt release lever (211 ) to perform a circular motion at a specific angle around the spindle belt release lever bearing axis (223), thereby breaking the contact between the spindle belt (103) and the spindle shaft (142).

[0222] In the process of releasing the spindle belt (103) described above, the springs spring-1 (213) and spring-2 (214), which are mounted on the spindle belt release lever (211 ) rotating at a specific angle around the bearing axis of the spindle belt release lever bearing (223), are subjected to compression and tension forces depending on the direction of the rotational motion. With the completion of the spindle belt (103) release process, spring-1 (213) and spring-2 (214) return to their previous positions and position the spindle belt release lever (211 ) in its middle position (initial position).

[0223] Note 1 : The process described above is valid for the spindle shaft (142) on the left side. The operation is the same for the spindle shaft (143) mounted on the right side.

[0224] After the spindle belt (103) is released, the spindle drive mechanism (230) will be used to operate the spindle at the desired speed in clockwise and counterclockwise directions.

[0225] The spindle drive servo motor (231 ) and the spindle drive belt (233), mounted on the spindle drive bearing (234), are moved forward by the linear motion of the spindle drive mechanism cylinder (232) and the spindle drive belt (233) is brought into contact with the spindle shaft (142). This contact is maintained from the moment the broken yarn end is located until the yarn piecing process is completed. During this process, the spindle drive motor (231 ) is operated at the desired speed, either clockwise or counterclockwise, depending on the desired yarn tension and position. When the broken yarn piecing process is completed, the mechanism is positioned in the parking position by the backward motion of the spindle drive mechanism cylinder (232).

[0226] Note-2: The same process is also valid for the motion of the right spindle shaft (143).

[0227] Once the automatic yarn piecing process is complete, production will resume on the problematic spindle. In order to restart production on the affected spindle, contact must be reestablished between the spindle belt (103) and the spindle shaft (142). This process will be achieved as follows:

[0228] With the forward motion of the spindle belt release lever forward-backward motion cylinder (219), the spindle belt release lever (211 ), which is initially positioned at an angle, performs a circular motion at a specific angle around on the bearing axis of the spindle belt release spring bearing (223) and re-establishes the contact between the spindle belt (103) and the spindle shaft (142). With this contact restored, the spindle shaft (142) starts to rotate again, and production continues in this way.

[0229] In order to resolve a yarn break problem on another spindle, the spindle belt release lever (212) must be returned to the park position. This process continues as follows: after the spindle belt release lever forward-backward motion cylinder (219) completes its forward motion, the spindle belt release arm up-down motion cylinder (221 ) moves upward, and subsequently, with the backward motion of the spindle belt release lever forward-backward motion cylinder (219), the spindle belt release lever (211 ) returns to its park position.

[0230] 2) Yarn piecing and reserve yarn feeding mechanism (300)

[0231] As a result of yarn breakages occurring during the production process and at the start of new lots, in order to resume production on the spindles where production has stopped, the following steps are carried out sequentially: a) The broken yarn end is found by means of the broken yarn end finding and reserve yarn feeding head (360). b) The yarn must be passed under the traveler (114). a) The broken yarn end is found by means of the broken yarn end finding and reserve yarn feeding head (360).

[0232] Yarn breaks occur in two different ways. i) Yarn breaks occurring during the production process ii) Yarn breaks occurring at the doffing related. i) Finding yarn ends in breaks that occur during the production process

[0233] When a yarn break occurs during the production process, there is a certain amount of yarn bundle (102) on the cop (101 ). First, the yarn end finding cylinder (31 1 ) mounted on the yarn end finding mechanism (310) moves forward, and the yarn end finding scanner (312) attached to the cylinder (311 ) is brought into contact with the yarn bundle (102) wound on the cop (101 ). With this contact provided, the previously released spindle (142) is rotated at the desired speed clockwise and counterclockwise by the spindle drive mechanism (230). When this process is completed, the end finding cylinder (311 ) moves in the reverse direction and separates the end finding scanner (312) from the yarn bundle (102) wound on the cop (101 ) and returns it to the parking position. The yarn end separated from the yarn bundle (102) is sucked through the broken yarn end finding and reserve yarn feeding head (360) by the vacuum-2 (366) vacuum hose. In order to contribute to the vacuuming process applied in the process of finding the broken yarn end, the A-axis motion cylinder (359) which rotates the broken yarn end finding and reserve yarn feeding head (360) by means of the broken yarn end finding and reserve yarn feeding head bearing (370), the X1 -axis motion cylinder (383) which allows it to move in the X-axis direction, the Y1 -axis motion cylinder (352) which allows it to move in the Y-axis direction and the Z1 -axis motion cylinder (381 ) which allows it to move in the Z-axis direction, are simultaneously operated to effectively scan the surface of the yarn bundle (102) and try to find the broken yarn end.

[0234] Until the broken yarn end finding process is completed, vacuum will be created through the vacuum-2 (366) hose and the yarn holding cylinder-1 (362) will be in the open position. When the process of finding the broken yarn end is completed, first the yarn holder cylinder-1 (362) will close and compress the found broken yarn end, then the vacuum air coming to the Vacuum-2 (366) hose will be cut off. [In this process, Vacuum-1 (365), yarn holding cylinder-2 (366) and yarn end cutting scissors (363) will be in the closed position.]

[0235] The next steps after finding the end of the broken yarn will be described in detail later. ii) Finding the yarn end at the breaks that occur at the doffing-related

[0236] In case of yarn breaks at the beginning of the doffing-related time, there is no yarn bundle (102) on the cop. Therefore, we will need to transfer some yarn onto the cop (101 ). For this purpose, the broken yarn end finding and reserve yarn feeding head (360) will position the reserve yarn in the front part of the feeding transfer pipe (356) with the cylinders (352,381 ,383) that provide the axial movements in the yarn piecing and reserve yarn feeding mechanism (300).

[0237] After this positioning process is completed, a portion of the yarn wound on the reserve feeding cop (355) is transferred to the empty cop (101 ). This process occurs in four steps.

[0238] Step 1 : While vacuuming via the vacuum-2 (366) hose; yarn holding cylinder-2 (364) must be open, yarn holding cylinder-3 (357) must be open, yarn holding cylinder-1 (362) must be closed, vacuum-1 (365) must be closed.

[0239] Step 2: Yarn holding cylinder-1 (362) must be open, yarn holding cylinder-2 (364) must be open, yarn holding cylinder-3 (357) must be open, vacuum must be applied to the vacuum- 1 (365) hose, and the compressed air transferred through the reserve feeding yarn transfer pneumatic air hose (354) will pass through the center of the reserve feeding cop (355) to transfer the reserve yarn to the rotating empty cop (103). During this process, the vacuum-2 (366) hose will not provide vacuum.

[0240] Note: During the application of compressed air transferred via the reserve feeding yarn transfer pneumatic air hose (354), vacuum-1 (365) will be closed.

[0241] Step 3: Yarn holding cylinder-1 (362) will be closed, vacuum-1 (365) will not vacuum, vacuum-2 (366) will vacuum, yarn holding cylinder-2 (364) will be open, yarn holding cylinder- 3 (357) will be closed and at this time, the yarn end cutting scissors (363) will close and cut the yarn in between.

[0242] Step 4: Yarn holding cylinder-1 (362) will be closed, vacuum-1 (365) will not vacuum, vacuum-2 (366) will not vacuum, yarn end cutting scissors (363) will be closed, yarn holding cylinder-2 (364) will be closed, and yarn holding cylinder-3 (357) will be closed.

[0243] In this way, a sufficient amount of yarn will be wound on the empty cop (103), and the yarn end held by the yarn holding cylinder- 1 (362) will be ready to start other process steps.

[0244] The subsequent process steps are the same as the process of piecing the yarn breaks that occur during the production process described in item “i” and will be described in detail later. b) The process steps of passing the yarn with found end (102a) through the lower part of the traveler (114);

[0245] The yarn with found end (102a) must be passed under the traveler (114) in order to continue the piecing process. This process is carried out as described below. The traveler centering mechanism forward-backward motion cylinder (322) located inside the traveler centering mechanism (320) moves the traveler centering and yarn positioning mechanism (330) in the park position forward and positions it in the ring (113) region. The yarn (102a), which is held with a certain pressure force by the yarn holding cylinder-1 (362), mounted on the broken yarn end finding and reserve yarn feeding head (360), is subjected to the pulling process with the “+” direction movement of the Y1 -axis motion cylinder (352). With this movement, the yarn with found end (102a) is brought to a position close to the yarn positioning vacuum port (334) located on the traveler centering and yarn positioning mechanism (330), and at this point, with the effect of the vacuuming force obtained through the vacuum transfer hose (336), the yarn with the found end (102a) will stick to the yarn positioning vacuum port (334). After the yarn adheres to the yarn positioning vacuum port (334), the traveler centering mechanism rotates the traveler centering mechanism forwardbackward motion cylinder (322) around its own axis by means of the rotation cylinder (321 ) located on the traveler centering mechanism (320), until it contacts the ring (113) by means of the traveler centering mechanism rotation bearing (323). As a result of the completion of the rotation movement, the yarn (102a) is clamped and fixed between the yarn compression bearing (117), which will be in contact with the yarn positioning vacuum port (334).

[0246] In order for the yarn (102a), whose end has been found and whose position has been fixed, to be passed under the traveler (114), the traveler (114) must be centered. In order to center the traveler (1 14), pneumatic air will be sent at certain times and in certain directions through the traveler guiding pneumatic air hoses (337,338,339) positioned in certain directions around the ring (1 13). The traveler (114), which gains movement with the push of pneumatic air sent in certain directions and timings, will be in contact with the angled surfaces on both sides of the traveler centering bearing (333) mounted on the traveler centering and yarn positioning mechanism carrying lever (340), and the position of the traveler (331 ) will be clarified thanks to the traveler centering support magnet (331 ) mounted on the front part.

[0247] The yarn transfer mechanism (380) will be used to pass the yarn (102a), whose end is located and is held with a certain force by the yarn holding cylinder-1 (362), under the traveler (114). The operation of the yarn transfer mechanism (380) is described below.

[0248] 3) Yarn transfer mechanism (380),

[0249] The transfer of the found and fixed-position yarn (102a) during the process of passing it under the traveler (114), through the balloon breaker (116), through the yarn guide (121 ), and positioning it between the outlet cot (132) and the outlet cylinder (133), is provided by the axis movements of the yarn transfer mechanism (380). The process of passing the yarn with found end (102a) under the traveler (1 14) from the yarn bundle (102) by the yarn piecing and reserve yarn feeding mechanism (300) has been initiated. This ongoing process will be completed as described below by means of the yarn transfer mechanism (380).

[0250] - Completion of the process of passing the yarn (102a) under the traveler (114),

[0251] The yarn (102a) will be passed under the traveler (1 14) thanks to the “+” directional movement of the yarn transfer mechanism X1 -axis motion cylinder (383), directional movement of the Y1 -axis motion cylinder (352), “+” and directional movements of the Z1 -axis motion cylinder (381 ) and the yarn passing support levers (332) mounted under the traveler centering and yarn positioning mechanism (330).

[0252] After the yarn is passed under the traveler (1 14), the traveler centering mechanism (320), through the traveler centering mechanism forward-backward motion cylinder rotation cylinder

[0253] (321 ) located on it, rotates the traveler centering mechanism forward-backward motion cylinder

[0254] (322) around its own axis by means of the traveler centering rotation bearing (323), thereby moving away from the ring (1 13) with a rotational movement. After the rotational movement is completed, the traveler centering mechanism forward-backward motion cylinder (322), located on the traveler centering mechanism (320), performs a backward pulling motion and pulls the traveler centering and yarn positioning mechanism (330) back to its park position.

[0255] Passing the yarn (102a) through the balloon breaker (116),

[0256] As a result of the programmed movements of the X1 -axis motion cylinder (383) in the “+” and directions, the Y1 -axis motion cylinder (352) in the “+” and directions, the Z1 -axis motion cylinder (381 ) in the “+” direction, and the rotational motion of the A-axis motion cylinder (359), the yarn (102a) will be passed through the balloon breaker (1 16).

[0257] Passing the yarn (102a) through the yarn guide (121 ),

[0258] The yarn (102a), which has passed through the balloon breaker (116), will be guided through the yarn guide (121 ) as a result of the programmed movements of the yarn transfer mechanism: the X1 -axis motion cylinder (383) in the “+” and directions, the Y1 -axis motion cylinder (352) in the “+” and directions, the Z1 -axis motion cylinder (381 ) in the “+” direction, and the rotational movement of the A-axis motion cylinder (359).

[0259] Positioning the yarn (102a) between the outlet cot (132) and the outlet cylinder (133), The yarn (102a), having passed through the yarn guide (121 ), will be positioned between the outlet cot (132) and the outlet cylinder (133) as a result of the programmed movements of the yarn transfer mechanism's X1 -axis motion cylinder (383) in the “+” and directions, the Y1 - axis motion cylinder (352) in the “+” and directions, the Z1 -axis motion cylinder (381 ) in the “+” direction, and the rotational movements of the A-axis motion cylinder (359).

[0260] In ring spinning machines, during the spinning process, the ring rail (11 1 ) moves up and down at certain periods. After the automatic yarn piecing robot (400) is positioned at the spindle with the yarn break, in order to operate synchronously with the ring rail, the yarn piecing and reserve yarn feeding mechanism carrier bearing (503) of the Z2-axis motion cylinder (502) will position the yarn piecing and reserve yarn feeding mechanism mounting plate (504) on the ring rail (1 11 ) by means of the yarn piecing and reserve yarn feeding mechanism synchronized motion nail (505). After this positioning process, the yarn piecing and reserve yarn feeding mechanism (300) and the yarn transfer mechanism (380) will move up and down synchronously. After the yarn piecing process is completed, the yarn piecing and reserve yarn feeding mechanism mounting plate (504) will be positioned to the parking position by the yarn piecing and reserve yarn feeding mechanism carrier bearing (503) with the upward movement of the Z2-axis motion cylinder (502).

[0261] In order to reduce the force applied on the ring rail (1 11 ) during the upward movement of the yarn piecing and reserve yarn feeding mechanism (300) and the yarn transfer mechanism (380) positioned on the ring rail (11 1 ), the synchronized movement will be maintained in a healthy manner thanks to the balancing weight of the yarn piecing and reserve yarn feeding mechanism (405).

[0262] Industrial Application of the Invention

[0263] The automatic yarn piecing robot (400) for ring spinning machines, which is the subject of the invention, will be easily installed on the existing machines in use and the newly produced machines.

[0264] With this invention, automatic yarn piecing robot integration can be easily achieved by means of rails (410, 171 ) to be mounted on only two sections of a typical ring spinning machine and carriages (411 ) and wheels (413) that will move on these rails.

[0265] Thus, significant contributions will be achieved in today’s environment, where competition is increasingly intense, access to human resources is becoming more difficult, and the concepts of efficiency and quality are coming to the forefront.

Claims

CLAIMS1. An automatic yarn piecing robot (400) for ring spinning machines, characterized by comprising;- a spindle belt release and released spindle drive mechanism (200) which releasing a spindle belt (103) that enables the drive of a spindle shaft (143) rotating on the spindle where the yarn break occurs by cutting its contact with the spindle shaft (143) and which enables the spindle shaft (143) to rotate at the desired speed and in the desired direction,- a yarn piecing and reserve yarn feeding mechanism (300) which enables the piecing of broken yarn by resolving the breaks that occur for two different reasons, during the production period and at the start of the doffing related time and- a yarn transfer mechanism (380) which starts from the ring (1 13) region of a yarn with found end (102a) and passes it through a balloon breaker (116) and a yarn guide (121 ) and positions it between an outlet cot (132) and an outlet cylinder (133) respectively.

2. The spindle belt release and released spindle drive mechanism (200) in claim 1 , characterized by comprising;- a spindle belt release lever (211 ) of a spindle belt release mechanism (210) used to break the contact between the spindle belt (103) and the spindle shaft (142) with which it is in contact,- a spindle belt release pulley (212), which is mounted on the spindle belt release lever (211 ) and will ensure contact with the spindle belt, a spindle belt release lever forward-backward motion cylinder (219), which allows the spindle belt (103) to move on the Y2-axis,- a cam track motion cylinder (216) and a cam track guide (217) that enable the spindle belt release lever (211 ) to rotate on the axis of the spindle belt release lever bearing (223),- a cam wheel (218) mounted on the spindle belt release lever (21 1 ) during the rotation movement of the spindle belt release lever (211 ),- a spring-1 (213), a spring-2 (214) and a centering spring bearing (215) which ensures the centering of the spindle belt release lever (21 1 ) after its contact with the cam track is cut off,a spindle belt release lever up-down motion cylinder (221 ) which allows the spring-2 (214) and the centering spring bearing (215), the spindle belt release lever (211 ), the centering spring bearing (215), the spring-1 , (213), the spring- 2 (214) and the cam wheel (218) to be moved up and down as a block.

3. The spindle belt release and released spindle drive mechanism (200) in claim 1 or claim 2, characterized by comprising; a spindle drive servo motor-1 (231 ) located on the spindle drive mechanism (230) and which can rotate the spindle shaft (142) at the desired speed and direction, thanks to the spindle belt release mechanism (210), a spindle shaft (142) is cut off from contact with the spindle belt (103) and comes to a stop position,- a spindle drive belt-1 (233) that transfers the movement of the spindle drive servo motor to the spindle shaft (142),- a spindle drive bearing (234) that enables these parts to be supported in bearings as a block, and a spindle drive mechanism motion cylinder (232) that enables the back and forth movement of the spindle drive bearing (234) towards the spindle shaft (142).

4. The yarn piecing and reserve yarn feeding mechanism (300) in claim 1 , characterized by comprising; an end finding mechanism (310) which helps to find the end of the yarn that has broken off from a yarn bundle (102) wound on a cop (101 ) in order to piece the yarn breaks that occur during the production process,- a traveler centering and yarn positioning mechanism (330) which ensures that a traveler (1 14) located in a random position on the ring (113) is centered in the desired position and the yarn with the found end (102a) is positioned before being passed under the traveler (1 14),- a traveler centering mechanism (320) which provides linear and rotational movements during the transfer of the traveler centering and yarn positioning mechanism (330) to the ring (1 13) region, a broken yarn end finding and reserve yarn feeding mechanism (350), which helps to find the broken yarn from the yarn bundle (102) during the production process and to transfer the broken yarn from a reserve feeding cop (355) to the empty cop (101 ) in the doffing-related time.

5. The end finding mechanism (310) in claim 4, characterized by comprising; an end finding scanner (312) which helps to separate the end of the broken yarn from the yarn bundle (102) wound on the cop (116) and an end finding cylinder (31 1 ) which ensures that the end finding scanner (312) comes into contact with the yarn bundle.

6. The traveler centering mechanism (320) in claim 4, characterized by comprising; a traveler centering mechanism forward-backward motion cylinder (322) which moves the traveler centering and yarn positioning mechanism (330) forward and backward towards the ring (113), which allows the yarn with found end (102a) to be passed under the traveler (114),- a traveler centering mechanism rotation bearing (323) which supports the rotation of the traveler centering mechanism forward-backward motion cylinder (322) around its own axis and a traveler centering mechanism forward-backward cylinder rotation cylinder (321 ) which provides this rotation movement.

7. The traveler centering and yarn positioning mechanism (330) in claim 4 or claim 6, characterized by comprising;- a traveler centering and yarn positioning mechanism connection bearing (335), which connects the traveler centering and yarn positioning mechanism (330) to the traveler centering mechanism (320),- a vacuum transfer hose (336) which adheres the yarn with the found end (102a) to the yarn positioning vacuum port (334),- a traveler guiding pneumatic air hoses (337,338,339) that contribute to the positioning of the traveler (1 14) located at any position on the ring (1 13) by contacting the two angled side surfaces of the traveler centering bearing (333),- a support lever for passing the yarn under the traveler (332) that contributes to the process of passing the yarn under the traveler,- a traveler centering support magnet (331 ) and a traveler centering and yarn positioning mechanism carrying lever (340) which provides the bearing of all the above-described parts.

8. The broken yarn end finding and reserve yarn feeding mechanism (350) in claim 4, characterized by comprising; the reserve feeding cop (355) used to transfer yarn onto the cop (116) that has no yarn on it in case of doffing-related yarn breaks,- a reserve feed cop connection bearing (353) to which the reserve feeding cop is attached,- a reserve feeding yarn transfer pneumatic air hose (354) which contributes to transferring the reserve yarn onto the cop,- a reserve yarn feeding transfer pipe (356),- a yarn holding cylinder-3 (357) holding the reserve yarn, a broken yarn end finding and reserve yarn feeding head (360), which helps wind the yarn transferred from the reserve feeding cop (355) onto the cop (116), an A-axis motion cylinder (359), which rotates the broken yarn end finding and reserve yarn feeding head (360) on the A-axis and- a broken yarn end finding and reserve yarn feeding head connection bearing (358) connecting the A-axis motion cylinder (359) to the Y-axis motion cylinder.

9. The broken yarn finding and reserve yarn feeding head (360) in claim 8, characterized by comprising;- a vacuum-1 (365) hose used for vacuuming the reserve yarn,- a vacuum-2 (366) hose used for finding the end on the yarn bundle (102), a yarn holding cylinder-1 (362) which holds the yarn with found end (102a) with a certain pressure force,- a yarn end cutting scissors (363), which enable the end of the yarn sent for reserve winding on the cop (116) to be cut after the process is completed, a yarn holding cylinder-2 (364), which is responsible for the transfer of the yarn end to the cop (1 16),- a broken yarn end finding and reserve yarn feeding pipe (361 ) which enables finding the broken yarn end and the transfer of the reserve yarn to the cop (1 16) and a broken yarn end finding and reserve yarn feeding head bearing (370), which enables the broken yarn end finding and reserve yarn feeding head (360) to be mounted on the A-axis motion cylinder (359).

10. The yarn transfer mechanism (380) in claim 1 , characterized by comprising;- a X1 -axis motion cylinder (383) and a X1 -axis motion servo motor (384), a Y1 - axis motion cylinder (352) and a Y1 -axis motion servo motor and a Z1 -axis motion cylinder (381 ) and a Z1 -axis motion servo motor (382) which enable the yarn with found end (102a) to be sequentially passed under the traveler (114),through the inner part of the ring (113) and the yarn guide (121 ), and positioned between the outlet cot (132) and the outlet cylinder (133).11 . The yarn piecing robot (400) claim 1 , characterized by comprising; a Z2-axis motion cylinder (502) which positions the yarn piecing and reserve yarn feeding mechanism (300) and the yarn transfer mechanism (380) on the ring rail (11 1 ) by means of the yarn piecing and reserve yarn feeding mechanism synchronized motion nail (505) on the yarn piecing and reserve yarn feeding mechanism mounting plate (504) and positions these two mechanisms in the parking position after the broken yarn piecing process,- a counterweight for balancing the up-down motion of the yarn piecing and reserve yarn feeding mechanism (300) yarn piecing which positioned on the ring rail (1 11 ), and reduces the force applied to the ring rail (11 1 ) by the yarn piecing and reserve yarn feeding mechanism (300) during the upward movement of the yarn transfer mechanism (380).

12. The invention is the process of automatically piecing the broken yarn in case of yarn breaks during the production process, thanks to the automatic yarn piecing robot (400) to be mounted on the ring spinning machines, characterized by comprising; the following process steps:• Positioning the automatic yarn piecing robot (400) on the spindle where the yarn break,• Positioning the yarn piecing and reserve yarn feeding mechanism (300) and the yarn transfer mechanism (380) onto the ring rail (1 11 ) by means of the Z2-axis motion cylinder (502) through the yarn piecing and reserve yarn feeding mechanism synchronized motion nail (505),• In the spindle where yarn break occurs the contact between the spindle shaft (142,143) and the spindle belt (103) is interrupted by the spindle belt release mechanism (210),• Moving the spindle shaft (142,143), which is out of contact with the spindle belt (103), in the desired direction and speed with the spindle drive mechanism (230),• Moving the end finding mechanism (310) back and forth to find the broken yarn end over the yarn bundle (102),• Finding the broken yarn end by vacuuming with the vacuum-2 (366) hose over the yarn bundle (102) via the broken yarn end finding and reserve yarn feeding head (360), which is mounted on the broken yarn end finding and reserve yarn feeding mechanism (350) and compressing it with a certain force by the yarn holding cylinder-1 (362),• Positioning the traveler centering and yarn positioning mechanism (330) on the ring by means of the traveler centering mechanism (320),• Adhering the yarn with found end (102a) to the yarn positioning vacuum port (334) with the vacuum air provided by the vacuum transfer hose (336),• Positioning the traveler (114) located at any position on the ring (1 13) with the compressed air sent at certain timings by the traveler guiding pneumatic air hoses (337,338,339) to the two angled side surfaces on the traveler centering bearing (333),• Passing the yarn with found end (102a) under the traveler (114) positioned in a suitable position, by means of the movements of the yarn passing support lever (332), the traveler centering support magnet (331 ) and the yarn transfer mechanism (380),• Passing the yarn with found end (102a) through the yarn transfer mechanism (380) through the inner part of the ring (113), passing it through the inner part of the yarn guide (121 ) and positioning it between the outlet cot (132) and the outlet cylinder (133),• Providing the contact again between the spindle shaft (142,143) and the spindle belt (103) which is in a broken state on the spindle where the breakage occurred, by means of the spindle belt release mechanism (210).

13. The invention is the process of automatically piecing the broken yarn in case of doffing- related end breaks, thanks to the automatic yarn piecing robot (400) to be mounted on ring spinning machines, characterized by comprising; the following process steps:• Positioning the automatic yarn piecing robot (400) on the spindle where the yarn break,Positioning the yarn piecing and reserve yarn feeding mechanism (300) together with the yarn transfer mechanism (380) onto the ring rail (11 1 ) throughthe yarn piecing and reserve yarn feeding mechanism synchronization motion nail (505) by the Z2-axis motion cylinder (502),• In the spindle where yarn break occurs the contact between the spindle shaft (142,143) and the spindle belt (103) is interrupted by the spindle belt release mechanism (210)• Moving the spindle shaft (142,143), which is out of contact with the spindle belt (103), in the direction of winding the yarn and at the desired speed with the spindle drive mechanism (230),• Transferring the yarn to the cop (116) without any yarn on it via the reserve feeding cop (355) in case of yarn breaks on the doffing-related end breaks by means of the broken yarn end finding and reserve yarn feeding mechanism (350),• Transferring the reserve yarn onto the cop via the reserve feeding cop (355) comprising four steps;- Step 1 : While vacuuming via the vacuum-2 (366) hose; yarn holding cylinder-2 (364) must be open, yarn holding cylinder-3 (357) must be open, yarn holding cylinder-1 (362) must be closed, vacuum-1 (365) must be closed,- Step 2: The yarn holding cylinder-1 (362) must be open, the yarn holding cylinder-2 (364) must be open, the yarn holding cylinder-3 (357) must be open, vacuum must be created on the vacuum-1 (365) hose, the compressed air transferred through the reserve feeding yarn transfer pneumatic air hose (354) will pass through the center of the reserve feeding cop (355) and ensure that the reserve yarn is transferred to the rotating empty cop (103). During this process, the vacuum-2 (366) hose will not create vacuum,- 3. Step 3: The yarn holding cylinder-1 (362) will be closed, the vacuum-1 (365) will not vacuum, the vacuum-2 (366) will vacuum, the yarn holding cylinder-2 (364) will be open, the yarn holding cylinder-3 (357) will be closed and at this time, the yarn end cutting scissors (363) will close and cut the yarn in between,- Step 4: The yarn holding cylinder-1 (362) will be closed, the vacuum-1 (365) will be vacuuming, the vacuum-2 (366) will not be vacuuming, the yarn end cutting scissors (363) will be closed, the yarn holding cylinder-2 (364) will be closed and the yarn holding cylinder-3 (357) will be closed and finally compressed air will be applied through the reserve feeding yarn transfer pneumatic air hose (354).• Positioning the traveler centering and yarn positioning mechanism (330) on the ring by means of the traveler centering mechanism (320),• Adhering the yarn with found end (102a) to the yarn positioning vacuum port (334) with the vacuum air provided by the vacuum transfer hose (336),• Positioning the traveler (114) located at any position on the ring (1 13) with the compressed air sent at certain timings by the traveler guiding pneumatic air hoses (337,338,339) to the two angled side surfaces on the traveler centering bearing (333),• Passing the yarn with found end (102a) under the traveler (114) positioned in a suitable position, by means of the movements of the yarn passing support lever (332), the traveler centering support magnet (331 ) and the yarn transfer mechanism (380),• Passing the yarn with found end (102a) through the yarn transfer mechanism (380) through the inner part of the ring (113), passing it through the inner part of the yarn guide (121 ) and positioning it between the outlet cot (132) and the outlet cylinder (133),• Providing the contact again between the spindle shaft (142,143) and the spindle belt (103), which is in a cut state on the spindle where the breakage occurred, with the spindle belt release mechanism (210).