Yarn recovery system

Abstract

A yarn recovery system comprises a yarn splitting device and a spooling device. The yarn dividing device comprises a yarn dividing and releasing unit and a yarn collecting unit, and the yarn dividing and releasing unit is provided with a yarn releasing base, a large yarn disc detachably arranged on the yarn releasing base, a tension motor unit and a yarn releasing and separating reed. The yarn collecting unit is provided with a yarn collecting base, a plurality of small yarn discs detachably arranged on the yarn collecting base, a plurality of yarn collecting motor units and a plurality of yarn collecting raddles, and yarns released by the large yarn discs are distributed to the yarn collecting raddles through the yarn releasing raddles and then are wound on the corresponding small yarn discs respectively. The winding device is used for winding the yarn of the small yarn disc to a plurality of winding bobbins. Therefore, the tail yarn can be recycled, and the effect of improving the utilization rate of yarn resources is achieved. The practicability is high, and the popularization significance is high.

Description

Technical Field

[0001] The utility model relates to a material recovery system, in particular to a yarn recovery system. Background Art

[0002] Traditional textile mills often face the problem of dealing with leftover yarn, particularly on textile equipment such as shuttle looms, ribbon looms, and warp knitting machines. These machines wind tens, hundreds, thousands, or even tens of thousands of yarns onto warp beams, which are then fed into the textile machine for weaving. When the remaining yarn length is insufficient or the order quantity has been reached, weaving stops. At this point, the remaining yarn on the machine is rewound back onto the warp beams for further processing. This large amount of leftover yarn creates an uncertain wait time before the next product with the same yarn length is ready for weaving, and the yarn is stored on the warp beams. Furthermore, prolonged storage can easily degrade the color and physical properties of yarn. Removing the yarn for recycling requires significant space and equipment due to the large volume of yarn on the warp beams, resulting in significant land and equipment requirements. Simply shearing the yarn from the warp beams and discarding it is environmentally unfriendly and wastes resources, as the yarn itself is of good quality. Utility Model Content

[0003] Therefore, in view of the deficiencies in the prior art, the present invention aims to provide a yarn recovery system.

[0004] A yarn recovery system, suitable for recovering yarn, comprising:

[0005] The cam is threaded onto the yarn feeder and the yarn is then fed back into the yarn feeder's yarn feeder assembly, the yarn feeder assembly comprising a yarn feeder base, a large yarn disc detachably arranged on the yarn feeder base, a tension motor unit and a yarn feeder reed arranged on the yarn feeder base, the large yarn disc being suitable for winding yarn and being linked to the tension motor unit to adjust the tension of the released yarn, the yarn feeder assembly comprising a yarn feeder base, a plurality of small yarn discs detachably arranged on the yarn feeder base, a plurality of yarn feeder motor units and a plurality of yarn feeder reeds arranged on the yarn feeder base, the small yarn discs being suitable for winding up yarn and being linked to the yarn feeder motor units to adjust the tension of the wound yarn, the yarn released from the large yarn disc is divided into the yarn feeder reeds via the yarn feeder reeds and then wound onto the corresponding small yarn discs, the length of each of the small yarn discs in its own axial direction being smaller than the length of the large yarn disc in its own axial direction;

[0006] The cam is connected to the winding drum by the spring which is connected to the winding drum by the spring which is connected to the winding drum by the spring.

[0007] Furthermore, each of the yarn-receiving motor groups has a yarn-receiving motor, a tension detector, and a motor controller electrically connected to the yarn-receiving motor and the tension detector. The motor controller controls the operation of the yarn-receiving motor according to the tension detected by the tension detector to adjust the tension of the corresponding small yarn disk winding yarn.

[0008] Furthermore, the winding yarn release machine group also has a yarn release amount monitoring device arranged on the winding yarn release base, the yarn release amount monitoring device is set corresponding to one of the small yarn discs and the signal is connected to the winding motor group, the winding motor group drives the tension groove drum to operate according to the yarn discharge speed of one of the small yarn discs detected by the yarn release amount monitoring device, so as to link the winding yarn drum to operate at a speed corresponding to the yarn discharge speed of one of the small yarn discs.

[0009] Furthermore, the winding machine group also has a first yarn frame and a second yarn frame arranged between the winding yarn release machine group and the yarn taking-up drum frame, a plurality of yarn frame porcelain eyes arranged on the first yarn frame, a plurality of yarn break sensors arranged on the second yarn frame, and a yarn break detector whose signal connects the yarn break sensor, the yarn release motor group and the winding motor group. The yarn released by one of the small yarn disks passes through the yarn frame, the yarn frame porcelain eye and the yarn break sensor in sequence, and then extends to the tension groove drum respectively. When the yarn break sensor detects yarn breakage, the yarn break detector outputs a yarn breakage abnormality signal to the yarn release motor group and the winding motor group.

[0010] In summary, the present invention achieves the following benefits: by providing the yarn-splitting and bobbin-winding devices, the tail yarn wound on the large yarn reel can be split onto the small yarn reel, and the yarn on the small yarn reel can then be individually split and wound onto the winding drum. This allows the tail yarn on the large yarn reel, which is no longer suitable for large-scale equipment, to be recovered and returned to the winding drum for reuse in smaller machines or for subsequent use, such as retail sales. Consequently, the present invention improves yarn resource utilization, reduces waste, and mitigates environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a top view of a yarn separation device according to an embodiment of the yarn recovery system of the present invention;

[0012] Figure 2 is a schematic diagram of the structure of the yarn separating device of this embodiment from a side perspective;

[0013] Figure 3 is a schematic diagram of the structure of the winding device of this embodiment from a side perspective; and

[0014] Figure 4 It is an incomplete schematic diagram of the winding machine group of this embodiment.

[0015] Explanation of symbols

[0016] 2: Yarn separation device 3: Yarn separation and yarn release unit 31: Yarn release base 32: Large yarn disc

[0017] 33: Tension motor unit 34: Yarn releasing and yarn dividing reed 4: Yarn collecting unit 41: Yarn collecting base

[0018] 42: Small yarn disc 43: Yarn collecting motor group 431: Yarn collecting motor 432: Tension detector

[0019] 433: Motor controller 44: Yarn collecting and yarn dividing reed 5: Winding device 6: Winding and yarn placing unit

[0020] 61: Winding yarn base 62: Yarn release motor unit 63: Yarn release amount monitoring device 631: Rotating wheel

[0021] 632: encoder 633: cylinder 64: yarn shaft 65: yarn rack

[0022] 66: yarn eye 7: winding unit 711: first creel 712: second creel

[0023] 713: Yarn creel 72: Creel eye 73: Yarn break sensor 731: Long rod

[0024] 732: movable end 74: yarn break detector 75: tension groove drum 751: groove

[0025] 76: Winding drum bracket 77: Winding drum 771: Cylinder body 772: Spring assembly

[0026] 78: Tension controller 79: Winding motor unit 791: Motor module 792: Encoder

[0027] 793:Controller 9:Yarn DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] See also Figure 1 、 Figure 2 and Figure 3 This is an embodiment of the yarn recovery system of the present invention, which is suitable for recovering tail yarn (remaining yarn), especially for tail yarn processing used in textile equipment such as shuttle looms, ribbon looms, and warp knitting machines. This embodiment includes a yarn separation device 2 and a winding device 5.

[0030] The yarn-splitting device 2 comprises a yarn-splitting and yarn-releasing unit 3 and a yarn-receiving unit 4. The yarn-splitting and yarn-releasing unit 3 comprises a yarn-releasing base 31, a large yarn drum 32 detachably mounted on the yarn-releasing base 31, a tension motor unit 33, and a yarn-releasing and yarn-removing reed 34 mounted on the yarn-releasing base 31. The large yarn drum 32 is used to wind the tail yarn (remaining yarn) and is driven by the tension motor unit 33 to adjust the tension of the released yarn 9. The yarn-releasing and yarn-removing reed 34 can be designed in a straight or herringbone configuration depending on actual needs.

[0031] The large yarn disc 32 can be implemented using a warp beam from a textile machine such as a shuttle loom, a weaving machine, or a warp knitting machine. Thus, the remaining yarn 9 on the machine can be wound back onto the warp beam and then moved to the yarn unwinding base 31 for use as the large yarn disc 32. Therefore, the size of the large yarn disc 32 can be flexibly adjusted according to the size of the warp beam (also known as the disc head) of the machine being used.

[0032] The yarn collecting unit 4 comprises a yarn collecting base 41, a plurality of small yarn discs 42 detachably mounted on the yarn collecting base 41, and a plurality of yarn collecting motor units 43 and a plurality of yarn collecting reeds 44 mounted on the yarn collecting base 41. Each small yarn disc 42 corresponds to one of the yarn collecting motor units 43 and one of the yarn collecting reeds 44. In this embodiment, the number of small yarn discs 42, the yarn collecting motor units 43, and the yarn collecting reeds 44 is three, but the number can be adjusted to two, four, or five or more depending on the needs, and is not limited to this.

[0033] The small yarn discs 42 are adapted to wind up the yarn 9 and are driven by the yarn-retracting motor 43 to adjust the tension of the yarn 9. The yarn 9 released from the large yarn disc 32 is distributed to the yarn-retracting reeds 44 via the yarn-releasing reed 34, and then reeled onto the corresponding small yarn discs 42. The axial length of each small yarn disc 42 is shorter than that of the large yarn disc 32. This allows the numerous yarns 9 on the large yarn disc 32 to be divided into smaller reels 42, facilitating subsequent yarn recovery. The yarn-retracting reeds 44 can be designed to be either straight or herringbone-shaped, depending on actual needs.

[0034] Each of the yarn-receiving motor units 43 comprises a yarn-receiving motor 431, a tension detector 432, and a motor controller 433 electrically connected to the yarn-receiving motor 431 and the tension detector 432. The motor controller 433 controls the operation of the yarn-receiving motor 431 based on the tension detected by the tension detector 432 to adjust the tension of the yarn 9 wound on the corresponding small yarn disc 42. The yarn-receiving motor 431 is, for example, a servo motor or a magnetic powder motor. The tension detector 432 is implemented using, for example, a physical elastic spring, a passive electromagnetic brake friction, or a tension detection sensor. The motor controller 433 is, for example, an integrated circuit such as an encoder and a PLC. Thus, by having a corresponding yarn-receiving motor unit 43 for each small yarn disc 42, the yarn 9 on each small yarn disc 42 can maintain a similar tension.

[0035] The winding device 5 includes a winding yarn release unit 6 and a winding unit 7. The winding yarn release unit 6 comprises a winding yarn release base 61 for detachably mounting one of the small yarn discs 42, a yarn release motor unit 62, a yarn release amount monitoring device 63, a yarn passing shaft 64, a yarn passing frame 65, and a plurality of yarn passing ceramic eyes 66 disposed on the yarn passing frame 65. The yarn passing ceramic eyes 66 are implemented as ring-shaped ceramic eyes.

[0036] The yarn release monitoring device 63 is mounted on the winding base 61 corresponding to one of the small yarn discs 42. It detects the speed of the yarn 9 released from one of the small yarn discs 42 and determines the released yarn length. The yarn release monitoring device 63 is implemented, for example, using a rotating wheel 631, an encoder 632, and a pneumatic cylinder 633. The pneumatic cylinder 633 drives the rotating wheel 631, for example, to contact the surface of the yarn 9 on one of the small yarn discs 42, causing the rotating wheel 631 to rotate in conjunction with the one of the small yarn discs 42. The encoder 632 then senses the rotational speed of the rotating wheel 631 to calculate the yarn 9 release speed. Since the amount of yarn 9 wound around one of the small yarn discs 42 gradually decreases during the yarn delivery process, resulting in a gradually decreasing outer diameter of the yarn 9, calculating the yarn release speed by measuring the rotational speed of the rotating wheel 631 reduces complex calculations and yields a more accurate value.

[0037] See Figure 3 and Figure 4The winding unit 7 comprises a first creel 711, a second creel 712, a take-up creel 713, a plurality of creel eyelets 72 provided on the first creel 711, a plurality of yarn break sensors 73 provided on the second creel 712, a yarn break detector 74, a plurality of tension grooved cylinders 75 provided on the take-up creel 713, a plurality of winding bobbin brackets 76 provided on the take-up creel 713 corresponding to the tension grooved cylinders 75, a plurality of winding bobbins 77 provided on the winding bobbin brackets 76, a plurality of tension controllers 78 provided corresponding to the winding bobbins 77, and a winding motor unit 79 provided on the take-up creel 713. The creel eyelets 72 are U-shaped. The tension controller 78 can be provided as required.

[0038] Each yarn break sensor 73 comprises a long rod 731 pivotally mounted on the second creel 712 for vertical rotation, and a movable end 732 disposed at the end of the long rod 731 for threading the yarn 9. Each yarn break sensor 73 uses the weight of the long rod 731 to press the movable end 732 downward on the yarn 9, providing a constant tension on the yarn 9. When the yarn 9 breaks, the movable end 732 swings downward in an arc, with the end of the long rod 731 pivotally connected to the second creel 712 as the center of the swing circle. This causes the long rod 731 to contact the second creel 712 (or a metal sensor (not shown) mounted on the second creel 712), completing a circuit. At this point, the yarn break sensor 73 provides a yarn break signal to the yarn break detector 74.

[0039] The yarn break detector 74 is signal-connected to the yarn break sensor 73, the yarn release motor unit 62, and the bobbin winding motor unit 79. When at least one of the yarn break sensors 73 detects a yarn break, the yarn break detector 74 outputs a yarn break abnormality signal to the yarn release motor unit 62 and the bobbin winding motor unit 79, causing the yarn release motor unit 62 and the bobbin winding motor unit 79 to stop operating to prevent the yarn 9 from winding.

[0040] The tension groove drum 75 is driven by the winding motor group 79. Figure 4 The winding drum 77 is rotated in the direction of the arrow in FIG. 1 and is used to respectively abut against the winding drum 77 to drive the winding drum 77 to rotate in the direction of the arrow in FIG. Figure 4 The tension drum 75 rotates in the direction of the arrow to wind up the yarn 9. Each tension drum 75 has a groove 751 that allows the yarn 9 to be evenly wound back and forth along the path of the groove 751 onto the corresponding take-up drum 77, preventing yarn compression. Each take-up drum 77 has a body 771 mounted on the take-up drum support 76 and a spring assembly 772 with two ends mounted on the take-up drum frame 713 and the take-up drum support 76, respectively. The spring assembly 772 provides a constant force that keeps the take-up drum 77 close to the tension drum 75.

[0041] The tension controller 78 is used to detect the tension of the yarn 9 corresponding to the winding drum 77. When it is detected that the tension is too large (for example, higher than a first predetermined value), the winding drum bracket 76 is controlled to move to the right. Figure 4 The winding drum 77 is rotated to the right side so that the corresponding winding drum 77 is separated from the tension groove drum 75 and stops rotating. When the tension controller 78 detects that the tension is too small (for example, lower than a second predetermined value), the winding drum bracket 76 is controlled to return to the state as shown in FIG. Figure 4 The corresponding winding drum 77 is returned to the position shown, allowing the corresponding winding drum 77 to return to abutment against the tension grooved drum 75 and continue rotating to wind the yarn 9. This maintains constant tension in the yarn 9 on each winding drum 77. Alternatively, the tension grooved drum 75 can be configured to engage the corresponding winding drum 77 so that when tension on the winding drum 77 is excessive (the yarn 9 is too tight), the tension grooved drum 75 will naturally disengage from the winding drum 77. Specifically, the tension grooved drum 75 rotates in conjunction with the winding motor assembly 79, while the winding drum 77 rotates due to frictional force applied to the tension grooved drum 75 by the spring assembly 772. When tension on the winding drum 77 is excessive, slippage occurs between the tension grooved drum 75 and the winding drum 77, preventing the yarn 9 from breaking. This also maintains constant tension in the yarn 9 on each winding drum 77.

[0042] The winding motor assembly 79 is connected to the yarn delivery monitoring device 63 and drives the tension drum 75 to operate according to the yarn delivery speed of one of the small yarn discs 42 detected by the yarn delivery monitoring device 63, thereby driving the winding drum 77 to operate at a speed corresponding to the yarn delivery speed of one of the small yarn discs 42. The winding motor assembly 79 comprises a motor module 791, an encoder 792, and a controller 793. The encoder 792 is arranged corresponding to the motor module 791 to sense the rotation speed of the motor module 791. The controller 793 is configured to control the motor module 791 to operate at a corresponding speed according to the yarn delivery speed of one of the small yarn discs 42, and can be implemented using a PLC. In other words, the controller 793 controls the motor module 791 to drive the tension drum 75 according to the yarn delivery length of one of the small yarn discs 42, so that the winding drum 77 is driven to wind up the yarn 9 of the same length as the yarn delivery length of one of the small yarn discs 42. Since the outer diameter of the yarn 9 gradually increases during the winding process of the yarn 9, the constant tension can be controlled more accurately by controlling the rotation speed of the tension grooved drum 75 with a fixed outer diameter, thereby avoiding complex calculations.

[0043] See Figure 1 、 Figure 2 and Figure 3, explained in terms of practical application, when the remaining yarn 9 on a textile machine such as a shuttle loom, ribbon loom, or warp knitting machine is insufficient, the remaining yarn 9 on the machine is first wound back onto the warp beam. Next, the warp beam is removed to serve as the large yarn disc 32 and assembled to the yarn-releasing base 31. The yarn-splitting device 2 is then operated to distribute the yarn 9 on the large yarn disc 32 to the small yarn discs 42. Next, one of the small yarn discs 42 is removed and assembled to the winding yarn-releasing base 61. The yarn-releasing motor 62 drives one of the small yarn discs 42 to release the yarn 9. The released yarn 9 sequentially passes through the yarn-reel 64, the yarn-passing eyelet 66 on the yarn-passing frame 65, the yarn-reel eyelet 72 on the first yarn frame 711, the movable end 732 of the yarn-break sensor 73, and the tension grooved drum 75, before being wound onto the corresponding winding drum 77. In this way, the tail yarn on the large yarn disc 32 can be recovered to the winding drum 77 for subsequent use.

[0044] It's worth noting that warp beams (the large yarn drums 32) in textile equipment vary in size. For example, on a shuttle loom, a single warp beam can wind thousands to tens of thousands of yarns 9. To wind yarns simultaneously, a winding device 5 corresponding to the number of yarns 9 is required. For example, if there were 10,000 yarns 9, the corresponding winding device 5 would require 10,000 tension drums 75 and 10,000 take-up drums 77. This would require a considerable amount of space, and the distances and lengths of the yarns 9 from the large yarn drum 32 to the take-up drums 77 vary greatly, making tension control extremely difficult. Therefore, this embodiment employs yarn splitting, evenly distributing the yarns 9 on the large yarn drum 32 onto three or more small yarn drums 42. If the number of yarns on a small yarn drum 42 is still greater than the number of take-up drums 77 in the existing winding device 5, the yarn splitting is repeated until the number of yarns on the small yarn drums 42 matches or falls below the number of take-up drums 77 in the existing winding device 5. Thereby, the space used by the entire equipment is reduced, thereby saving land and equipment costs.

[0045] For example, assuming that the number of yarns 9 on the large yarn disc 32 (warp beam) is 10,260, if these 10,260 yarns 9 are to be directly wound, 10,260 winding drums 77 will be required, which is a very large number and has a complicated structure, and the space required will be very large. If this embodiment is used for a single yarn split, the large yarn disc 32 with 10,260 yarns 9 can be divided into three small yarn discs 42 with 3,420 yarns 9. If the small yarn discs 42 with 3,420 yarns 9 are then used for winding, the winding device 5 only requires about 1 / 3 of the original space. If a second yarn split is performed, the small yarn disc 42 used for the first yarn split is used as the large yarn disc 32 for the second yarn split, and a smaller yarn disc is used as the small yarn disc 42 for the second yarn split. In this way, the large yarn disc 32 with 3420 yarns 9 can be further divided into three small yarn discs 42 with 1140 yarns 9. When the small yarn discs 42 with 1140 yarns 9 are used for winding, the winding device 5 only requires about 1 / 9 of the original space. If the yarn is divided a third time, the large yarn disc 32 with 1140 yarns 9 can be further divided into three small yarn discs 42 with 380 yarns 9. When the small yarn discs 42 with 380 yarns 9 are used for winding, the winding device 5 only requires about 1 / 27 of the original space. Therefore, by first dividing the yarn through the yarn dividing device 2, the complexity and space required for the winding device 5 can be greatly reduced.

[0046] Based on the above description, the effects of this embodiment are as follows:

[0047] First, by providing the yarn-splitting device 2 and the bobbin-winding device 5, the tail yarn wound on the large yarn disk 32 can be distributed to the small yarn disk 42. The yarn 9 on the small yarn disk 42 is then individually distributed and rewound onto the winding drum 77. In this way, the tail yarn on the large yarn disk 32 that can no longer be used by large textile equipment such as shuttle looms, ribbon looms, and warp knitting machines can be recovered and reclaimed on the winding drum 77 for reuse in smaller machines or for subsequent use, such as retail sales. Therefore, this embodiment effectively recycles the tail yarn, thereby improving the utilization rate of the yarn 9 resource, reducing waste, and alleviating environmental pollution.

[0048] Second, by providing a tension detector 432 on each yarn taking-up motor unit 43 and cooperating with a motor controller 433 to control the operation of the yarn taking-up motor 431 according to the tension detected by the tension detector 432, the tension of the yarn 9 wound on the corresponding small yarn disc 42 can be adjusted. This maintains a constant tension on the yarn 9 on each small yarn disc 42.

[0049] Third, by installing the yarn release monitoring device 63 and cooperating with the winding motor unit 79, the tension drum 75 is driven to rotate according to the yarn release speed detected by the yarn release monitoring device 63, thereby interlocking with the rotation of the winding drum 77. The rotation speed of the winding drum 77 can be adjusted to the yarn release speed of the winding and unwinding unit 6, thereby maintaining a stable conveyance of the yarn 9.

[0050] Fourth, by providing the yarn break sensor 73 and the yarn break detector 74, the yarn unwinding motor 62 and the winding motor 79 can be immediately notified to stop running when the yarn breaks, thereby avoiding winding or knotting of the broken yarn.

[0051] In summary, the yarn recovery system of the present utility model can indeed achieve the purpose of the present utility model; it is highly practical and has great promotion significance.

[0052] The above-mentioned embodiments only express some implementation methods of the present invention. The description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention. These all fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the attached claims.

Claims

1. A yarn recovery system, suitable for recovering yarn, characterized by: Include: The cam is threaded onto the yarn feeder and the yarn is then fed back into the yarn feeder's yarn feeder assembly, the yarn feeder assembly comprising a yarn feeder base, a large yarn disc detachably arranged on the yarn feeder base, a tension motor unit and a yarn feeder reed arranged on the yarn feeder base, the large yarn disc being suitable for winding yarn and being linked to the tension motor unit to adjust the tension of the released yarn, the yarn feeder assembly comprising a yarn feeder base, a plurality of small yarn discs detachably arranged on the yarn feeder base, a plurality of yarn feeder motor units and a plurality of yarn feeder reeds arranged on the yarn feeder base, the small yarn discs being suitable for winding up yarn and being linked to the yarn feeder motor units to adjust the tension of the wound yarn, the yarn released from the large yarn disc is divided into the yarn feeder reeds via the yarn feeder reeds and then wound onto the corresponding small yarn discs, the length of each of the small yarn discs in its own axial direction being smaller than the length of the large yarn disc in its own axial direction; The cam is connected to the winding drum by the spring which is connected to the winding drum by the spring which is connected to the winding drum by the spring.

2. A yarn recovery system according to claim 1, characterized in that: Each of the yarn taking-up motor groups has a yarn taking-up motor, a tension detector, and a motor controller electrically connected to the yarn taking-up motor and the tension detector. The motor controller controls the operation of the yarn taking-up motor according to the tension detected by the tension detector to adjust the tension of the corresponding small yarn disk winding yarn.

3. A yarn recovery system according to claim 1, characterized in that: The winding yarn-releasing machine group also has a yarn-releasing amount monitoring device arranged on the winding yarn-releasing base. The yarn-releasing amount monitoring device is arranged corresponding to one of the small yarn discs and its signal is connected to the winding motor group. The winding motor group drives the tension groove drum to operate according to the yarn outlet speed of one of the small yarn discs detected by the yarn-releasing amount monitoring device, so as to link the winding yarn drum to operate at a speed corresponding to the yarn outlet speed of one of the small yarn discs.

4. A yarn recovery system according to claim 2, characterized in that: The winding machine group also has a first yarn frame and a second yarn frame arranged between the winding yarn release machine group and the yarn taking-up yarn frame, a plurality of yarn frame porcelain eyes arranged on the first yarn frame, a plurality of yarn break sensors arranged on the second yarn frame, and a yarn break detector that connects the yarn break sensor, the yarn release motor group and the winding motor group with a signal. The yarn released by one of the small yarn disks passes through the yarn frame, the yarn frame porcelain eye and the yarn break sensor in sequence, and then extends to the tension groove drum respectively. When the yarn break sensor detects yarn breakage, the yarn break detector outputs a yarn breakage abnormality signal to the yarn release motor group and the winding motor group.

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