CN110699796A

CN110699796A - Spinning mechanism of yarn

Info

Publication number: CN110699796A
Application number: CN201911080337.7A
Authority: CN
Inventors: 陈国樑; 张斌; 严登科; 戴小平; 邵开元; 潘凯凯; 张越锋
Original assignee: Zhejiang Rifa Textile Machinery Co Ltd
Current assignee: Anhui Rifa Textile Machinery Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-01-17

Abstract

The invention discloses a yarn spinning mechanism which comprises a drafting device, a spinning part, an output device, a yarn storage device and a winding part which are sequentially arranged from top to bottom, wherein the yarn storage device comprises a yarn storage roller and a yarn guide flyer, one side of the yarn guide flyer is provided with a retractable and movable flyer stopper, the flyer stopper controls the yarn storage device to unwind yarns when the yarns are broken, and the winding part is connected with a braking part which drives the winding part to independently rotate. The invention has simple integral structure design, removes an intermittent braking mode for stopping the rotation of the package of the spinning mechanism, reverses the reverse roller of the package, captures the guide part of the spinning head and finishes the time of yarn faults, thereby reducing the operation flow, reducing the splicing operation time, improving the working efficiency, reducing the relative friction to the yarn and improving the spinning quality.

Description

Spinning mechanism of yarn

Technical Field

The invention relates to the technical field of spinning mechanical equipment, in particular to a yarn spinning mechanism.

Background

A spinning machine is known which twists a fiber to produce a spun yarn and winds the spun yarn around a package, and a spinning machine described in the literature produces a rotating air flow in a spinning chamber by ejecting compressed air from an air-jet spinning nozzle, and twists a fiber bundle with the rotating air flow to produce a yarn. Conventionally, a spinning unit that produces a spun yarn by drafting a fiber bundle and twisting the drafted fiber bundle is known, and the spinning unit is provided with a yarn defect detecting section that can detect a defect portion of the spun yarn and a winding section that winds the spun yarn to form a package.

Conventionally, a spinning machine including a plurality of spinning units is known, in which a work carriage that travels to a spinning unit when a continuous state of a spun yarn is cut in one spinning unit and performs a splicing operation is provided, and the splicing operation carriage is provided with a braking section capable of braking rotation of a package, a guide section that captures and guides the spun yarn, and a joint section that joins yarn ends of the spun yarn to each other.

The spinning unit cuts the spun yarn and other yarns when the yarn defect detecting section detects a defective portion of the spun yarn, and interrupts the operation of the package. When the splicing operation carriage reaches the spinning unit, the braking portion is brought into contact with the package to stop the rotation of the package. Then, the guide portion for the splicing operation carriage moves to the package side, and then the package is rotated (reversed) in the unwinding direction by the reverse roller so that the guide portion (large suction nozzle) can catch the package spinning head, and the guide portion (large suction nozzle) can catch the spinning head smoothly, and the yarn defect is removed and guided to a predetermined position, and the yarn ends of the spun yarn are joined to each other by the splicing operation carriage joint portion after the defect portion is removed. After the series of steps, the spinning unit resumes the package formation.

When the moment of inertia of the package is large, such as when the outer diameter of the package increases due to a large spun yarn being wound, even if the braking section is brought into contact with the package for a predetermined time, the rotation of the package may not be stopped. The friction between the braking section and the package sometimes makes it difficult for the guide section (large suction nozzle) to catch the spinning head. When the rotation of the package cannot be stopped, the package cannot be reversed even by using the reverse roller, and the guide portion (large suction nozzle) cannot catch the yarn end wound around the package. The quality of the spun yarn wound into the package may be deteriorated by the reverse roller.

In order to solve the problem, the patent application No. 201210323456.2 provides a spinning machine in which the rotation of the package can be stably stopped by adjusting the contact time of the package with the braking portion. The reverse roller is smoothly reversed, and the guide part (large suction nozzle) is smoothly caught at the spinning head for a predetermined time. The above-described solution still does not completely solve all the problems, and there are also problems that the brake section comes into contact with the package and the reverse roller comes into contact with the package and the friction occurs, that is, the guide section (large suction nozzle) may not catch the yarn end wound on the package, that even if the yarn end wound on the package is caught, there is a time when the yarn end has an unwinding yarn defect, and that the long-term efficiency of the operation time of the splicing work carriage is low.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a yarn spinning mechanism, which reduces the operation flow, reduces the splicing operation time and improves the working efficiency.

In order to achieve the purpose, the invention provides the following technical scheme: a yarn spinning mechanism comprises a drafting device, a spinning part, an output device, a yarn storage device and a winding part which are sequentially arranged from top to bottom, wherein the yarn storage device comprises a yarn storage roller and a yarn guide flyer, a retractable and movable flyer stopper is arranged on one side of the yarn guide flyer, and the flyer stopper controls the yarn storage device to unwind yarns when the yarns are broken.

The spinning machine has a plurality of spinning mechanisms arranged in an array, and a splicing operation trolley, and a fiber bundle passing through a drafting device passes through a spinning section to generate a spun yarn, and is conveyed by a delivery device, and then conveyed by a yarn storage device to be wound by a bottom winding section to form a package. In the spinning process, when the yarn with defects is cut off or the spun yarn is cut off under other conditions, the winding part of the spinning mechanism stops rotating, the yarn storage roller drives the yarn guide flyer to continue rotating, when the yarn storage device detects that no yarn exists, the flyer stopper is started to be contacted with the yarn guide flyer, and the yarn guide flyer and the yarn storage roller rotate together under the control of magnetic force fit, so that when the force between the flyer stopper and the yarn guide flyer is larger than the magnetic force between the flyer stopper and the yarn storage roller, the yarn guide flyer does not rotate together with the yarn storage roller, the remaining yarn is unwound through the flyer stopper, and meanwhile, the winding part reversely rotates to remove the yarn defects. The splicing operation trolley moves to the spinning mechanism to directly perform splicing operation to complete the yarn breaking and splicing operation. The spinning mechanism is simple in design, reduces the operation flow, reduces the splicing operation time and improves the working efficiency.

Further, the winding part is connected with a braking part for driving the winding part to rotate independently, and the braking part of the spinning mechanism can independently drive the winding part to stop or rotate. In the spinning process, when the yarn with defects is cut off or the spun yarn is cut off under other conditions, the braking part of the spinning mechanism independently drives the winding part to stop rotating, and after the upstream yarn end is unwound, the braking part drives the winding part to reversely rotate to finish yarn defect unwinding, so that the splicing operation trolley finishes the work of yarn breakage and yarn splicing. The intermittent braking mode of stopping the rotation of the spinning mechanism package is eliminated, the reverse rotating roller of the package is reversely rotated, the time for catching the spinning head guiding part and withdrawing yarn faults is shortened, the operation flow is reduced, the splicing operation time is shortened, and the working efficiency is improved.

Further, the flyer stopper comprises a fixed plate, an adjusting cylinder is mounted on the fixed plate, and the adjusting cylinder is in contact with the yarn guide flyer after stretching. The fixed plate is fixed on one side of the yarn guiding flyer, the adjusting cylinder is arranged on the fixed plate, after the spinning is cut off, the starting cylinder is contacted with the yarn guiding flyer, the yarn guiding flyer is pushed by the cylinder, when the pushing force of the air cylinder exceeds the magnetic force between the yarn guiding flyer and the yarn storage roller, the yarn guiding flyer does not rotate with the yarn storage roller, and the remained yarn is unwound through the flyer stopper.

A plurality of mounting holes are formed in the fixing plate, and the mounting holes are waist-shaped holes along the telescopic direction of the adjusting cylinder. The position of the fixing plate can be adjusted back and forth by the design of the waist-shaped hole to ensure contact with the yarn guiding flyer.

Further, the winding part includes a bobbin for winding the yarn, a surface of the bobbin is in contact with the braking part, and an angle adjusting device is connected to the bobbin. When the bobbin increases the diameter of the yarn layer of the package due to the yarn being wound, the surface of the package can be continuously brought into proper contact with the drum by adjusting the contact of the bobbin with the braking portion by the angle adjusting device.

Further, the angle adjusting device comprises a rocker arm frame connected with two ends of the bobbin, a rotating block is hinged to the bottom of the rocker arm frame, and the rotating block is connected with a driving mechanism. The driving mechanism operates to push the rotating block upwards so that the rocker arm frame drives the roller to be far away.

Further, the driving mechanism is a driving air cylinder, and the rotating block is provided with an ejector rod matched with a piston rod of the driving air cylinder. The driving cylinder runs and extends upwards to prop against the top rod above, so that the rotating block rotates.

Further, the braking portion includes a winding drum in contact with a surface of the winding portion, and the winding drum is connected with a motor driving the winding drum to rotate. The winding drum includes a central stator portion and an outer rotor portion at the periphery of the stator, which are independently driven for rotation by a motor.

Furthermore, an electronic yarn cleaner and a tension sensor are arranged between the output device and the yarn storage device, and a yarn sensor, a holding part with negative pressure and a yarn breakage sensor are sequentially arranged between the yarn storage device and the winding part. The spun yarn produced in the spinning section passes through an electronic clearer and a tension sensor before being wound by the yarn accumulating device, the electronic clearer monitors the thickness and the like of the running spun yarn, the tension sensor monitors the tension value of the running spun yarn, and the spun yarn is cut when a defect is detected during spinning and the tension is lower than a set value. After the yarn is cut, the yarn end is sucked by the holding part with negative pressure, and the yarn cutting sensor sends a signal to make the splicing operation trolley travel to the position to splice.

The yarn winding device further includes a traverse device for controlling the traverse winding of the yarn into a package, and the traverse device includes a traverse guide capable of guiding the spun yarn, and traverses and winds the spun yarn onto a bobbin by driving the traverse guide to reciprocate to form the package.

The spinning machine further comprises a control part, and the control part controls the automatic operation of the whole spinning mechanism. The control part can receive various signals and control the spinning mechanism to automatically run, and the whole working operation can be completed without manual intervention.

As described above, in the yarn spinning mechanism according to the present invention, at least one flyer stopper is provided in the yarn head holding section and the independently driven winding section disposed on the downstream side of the yarn guide flyer. The spinning mechanism cuts the spun yarn when detecting a defective portion of the spun yarn or cuts the spun yarn in some other cases. The winding part is independently driven to stop rotating, and the yarn storage roller drives the yarn guide flyer to continue rotating. When the yarn storage roller sensor detects that there is no yarn, the flyer stopper is started to contact the yarn guide flyer, the yarn guide flyer does not rotate together with the yarn storage roller, and the remaining yarn is unwound by the flyer stopper into the yarn suction thread end holding portion having a negative pressure. Meanwhile, the winding part is independently driven to reversely rotate and retreat yarn , yarn defects enter a yarn negative pressure channel of the holding part and are held at a specified position, and the splicing operation trolley directly performs splicing operation after moving to the spinning unit for positioning.

The invention has simple integral structure design, removes an intermittent braking mode for stopping the rotation of the package of the spinning mechanism, reverses the reverse roller of the package, captures the guide part of the spinning head and finishes the time of yarn faults, thereby reducing the operation flow, reducing the splicing operation time and improving the working efficiency. The splicing operation trolley has no relative friction of the braking part to the winding part, no relative friction of the reverse roller to the winding part and no damage to the spun yarn on the winding part, thereby improving the quality of the spun yarn and ensuring the possibility that the guide part catches the spun yarn head. The manufacturing efficiency of the spun yarn in each spinning mechanism can be improved, and the production efficiency of the package in the spinning machine can be improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a spinning machine;

FIG. 2 is a perspective view of the yarn storage device of the present invention;

FIG. 3 is a schematic view of the flyer stopper of the present invention;

FIG. 4 is a view of the flyer stop of the present invention in operation;

FIG. 5 is a schematic view of the spinning mechanism of the present invention in a spinning operation and a working carriage;

FIG. 6 is a schematic view of the spinning mechanism of the present invention in a broken state and the operation trolley;

FIG. 7 is a schematic view of the spinning mechanism of the present invention in a splicing operation and a working trolley;

FIG. 8 is a schematic structural view of a spinning mechanism and an operation trolley when a yarn sucking tube sucks yarn;

FIG. 9 is a schematic view of the spinning mechanism of the present invention with the suction tube guiding the yarn below the splicer and the operation cart;

FIG. 10 is a schematic view of an angle adjustment apparatus according to the present invention;

fig. 11 is another angular configuration view of fig. 10.

Description of the labeling: 1. a spinning machine; 2. a spinning mechanism; 3. splicing operation trolleys; 5. a control unit; 6. a frame; 7. a drafting device; 8. a fiber bundle; 9. a spinning section; 10. spinning; 11. an output device; 12. a yarn storage device; 13. a winding section; 15. a sliver; 16. a rear roller pair; 17. a third roller pair; 18. a leather collar; 19. a pair of intermediate rolls; 20. a front roller pair; 21. a yarn storage roller; 22. a yarn guide flyer; 25. a drive motor; 39. an output roller; 40. delivering out of the leather roller; 41. a track; 43. a splicer; 44. a yarn suction tube; 45. coiling; 46. a yarn sensor; 47. A driving cylinder; 48. a bobbin; 52. an electronic yarn clearer; 65. a source of compressed air; 70. a support shaft; 71. a rocker arm frame; 71a, an arm one; 71b, arm two; 72. a winding drum; 72a, outward turning; 72b, a stator; 73. a traversing motor; 74. a top rod; 75. rotating the block; 76. a traverse guide; 77. a holding section; 78. a yarn breakage sensor; 80. a negative pressure fan; 81. a handle; 83. a tension sensor; 85. a flyer stop; 85a, a fixing plate; 85b, an adjusting cylinder; 85c, cylinder telescopic rods; 85d, a joint; 85e, mounting holes.

Detailed Description

An embodiment of a spinning mechanism for a yarn according to the present invention will be further described with reference to fig. 1 to 11, and in this specification, "upstream" and "downstream" are substantially upstream and downstream in the traveling direction of the yarn during spinning.

As shown in fig. 1, a fiber spinning machine 1 is provided with a plurality of spinning mechanisms 2 arranged in an array, and the spinning machine 1 has a splicing work carriage 3, a negative pressure fan 80, and a control section 5 attached to a headstock. Each spinning mechanism 2 is provided with a drafting device 7, a spinning part 9, a delivery device 11, a yarn storage device 12 and a winding part 13 as main mechanisms from upstream to downstream in sequence, the yarn storage device 12 comprises a yarn storage roller 21 and a yarn guide flyer 22, one side of the yarn guide flyer 22 is provided with a retractable and movable flyer stopper 85, and the winding part 13 is connected with a braking part for driving the winding part to rotate independently. The draft device 7 is provided in the vicinity of the upstream of the frame 6 of the spinning machine 1, and the fiber bundle 8 fed from the draft device 7 is spun by the spinning section 9 at the spinning section 10, and the spun yarn 10 generated by the spinning section 9 is transported by the take-out device 11 and then wound around the bobbin 48 by the winding section 13 to form the package 45.

The draft device 7 is a device for making the fiber bundle 8 of the sliver 15 into a thin fiber bundle 8, and as shown in fig. 5, the draft device 7 includes four sets of a rear roller pair 16, a third roller pair 17, a middle roller pair 19 having a apron 18 attached to each roller, and a front roller pair 20.

In the present embodiment, the structure of the spinning section 9 is an air type structure in which compressed air is ejected from a nozzle of the air jet spinning yarn 10 to generate a whirling airflow in the spinning yarn 10 chamber, and the fiber bundle 8 is twisted by the whirling airflow to generate the spun yarn 10.

The delivery device 11 includes a delivery roller 40 supported by the frame 6 of the spinning machine 1 and a delivery roller 39 disposed in contact with the delivery roller. The spun yarn 10 fed from the spinning section 9 is sandwiched between the delivery roller 39 and the delivery leather roller 40, and the delivery roller 39 is rotationally driven by a motor (not shown), whereby the spun yarn 10 can be fed to the yarn accumulating device 12, and the yarn can be fed to the winding section 13 through the unwinding position of the yarn accumulating device 12.

The yarn accumulating device 12 includes a yarn accumulating roller 21, a yarn guide flyer 22, and a drive motor 25, the yarn accumulating roller 21 and the yarn guide flyer 22 are rotationally driven by the drive motor 25, the yarn guide flyer 22 can generate a relative friction with the spun yarn 10 at the time of spinning the spun yarn 10, the spun yarn 10 is guided to the outer peripheral surface of the yarn accumulating roller 21 and accumulated, and the yarn guide flyer 22 can continuously feed the spun yarn 10 to the winding section 13 with a constant tension.

An electronic clearer 52 and a tension sensor 83 are provided at a position on the front side of a frame 6 of the spinning machine 1 and between a delivery roller 39 and a yarn accumulating roller 21, a spun yarn 10 generated in a spinning section 9 passes through the electronic clearer 52 and the tension sensor 83 while being wound around the yarn accumulating roller 21, the electronic clearer 52 monitors the thickness of the running spun yarn 10, the tension sensor 83 monitors the tension of the running spun yarn 10, and when a defect is detected in the spun yarn 10 and the tension value is lower than a set value, a yarn defect detection signal is transmitted to a control section 5, and the control section 5 transmits a signal to cut the spun yarn 10 when a yarn defect is detected.

The winding section 13 includes a rocker arm frame 71, a winding drum 72, and a traverse device. The winding drum 72 is driven in contact with the outer peripheral surface of the bobbin 48 or the package 45, the traverse device is provided with a traverse guide 76 capable of guiding the spun yarn 10, the traverse guide 76 is driven by a traverse motor 73 to reciprocate the traverse guide 76, the winding drum 72 includes a central stator 72b portion and an outer rotor 72a portion on the outer peripheral surface of the stator 72b, the winding drum 72 is connected to an independent braking section and is driven to rotate by the motor alone, and the winding section 13 rotationally drives the package 45 in contact with the winding drum 72 to traverse and wind the spun yarn 10 onto the package 45. The bobbin 48 is connected to an angle adjusting device capable of controlling the angle thereof, and includes a rocker arm bracket 71 connected to both ends of the bobbin, and the rocker arm bracket 71 is rotatably supported by a support shaft 70 and is rotatable in either one of a direction in which the package 45 approaches the winding drum 72 and a direction away from the winding drum 72. Even if the yarn layer diameter of the package 45 increases due to the spun yarn 10 being wound, the surface of the package 45 is continuously brought into proper contact with the winding drum 72 as the yarn layer diameter increases by the rotation of the rocker arm bracket 71.

As shown in fig. 10 and 11, a rotating block 75 is hinged to the bottom of the rocker arm frame 71 through a support shaft 70, a push rod 74 is arranged on the rotating block 75, a driving cylinder 47 is correspondingly matched with the lower portion of the push rod 74, and the driving cylinder 47 operates to push the push rod 74 to enable the rotating block 75 to push the rocker arm frame 71 to rotate and move in a direction away from or close to the winding roller 72, so that the surface of the package 45 is kept to be continuously and continuously kept in proper contact force with the winding penetration.

As shown in fig. 11, one end of the rocker arm bracket 71 includes two parts, namely, a first arm 71a and a second arm 71b, which are hinged to each other, and when the rocker arm bracket 71 is mounted on both ends of the bobbin 48, the first arm 71a and the second arm 71b can be rotated to open the same, which is suitable for mounting bobbins 48 of different lengths and is convenient to operate. The upper end of the rocker arm frame 71 is connected with a handle 81, and can be manually adjusted by the handle 81.

The splicing work carriage 3 is provided with a splicer 43 and a yarn suction tube 44, and as shown in fig. 1, the splicing work carriage 3 can travel while being fixed to a rail 41 on the frame 6, and when a yarn break occurs or a yarn is cut at a certain spinning mechanism 2, the splicing work carriage 3 travels to the spinning mechanism 2 along the rail 41 and stops to perform splicing. When a defect or a yarn break is detected during the spinning 10, a signal is sent to the control section 5, and immediately after that, the rotation of the roller pair 16 and the third roller pair 17 is stopped, and the spinning mechanism 2 stops spinning, and as shown in fig. 6, a certain amount of yarn is stored on the surface of the yarn storage roller 21, and the winding drum 72 continues to rotate.

Then the control part 5 controls the winding drum 72 to rotate, when the yarn on the surface of the yarn storage roller 21 is partially unwound, the yarn sensor 46 detects a signal, the control part 5 sends a signal to control the winding drum 72 to stop rotating speed and quickly reversely rotate to unwind the yarn defect, the yarn defect enters the holding part 77 with a negative pressure channel, and the negative pressure fan 80 provides negative pressure for the holding part 77. The flyer flight may be configured to be air cylinder pushed, solenoid controlled or otherwise driven so that it can extend and move to activate the flyer flight 85 to contact the yarn guiding flyer 22 when the yarn sensor 46 detects a signal, the yarn guiding flyer 22 does not rotate with the yarn storage roller 21, the yarn guiding flyer 22 reduces relative friction with the spun yarn 10, the yarn is attracted by the holding portion 77 over the flyer flight 85, and the spun yarn 10 is smoothly unwound into the holding portion 77, as shown in fig. 7.

As shown in fig. 2-4, taking the example of a cylinder controlled flyer stop, flyer stop 85 is mounted on one side of the yarn guiding flyer 22 by means of a mounting plate 85a, an adjusting cylinder 85b is mounted on the mounting plate 85a, and the adjusting cylinder 85b is connected to the compressed air source 65 via a connector 85 d. When the spun yarn 10 is cut off, the solenoid valve is actuated to control the compressed air source 65, the cylinder extension rod 85c is extended to contact the yarn guide flyer 22, the yarn guide flyer 22 is pushed by the adjusting cylinder 85b, and when the pushing force exceeds the magnetic force between the yarn guide flyer 22 and the yarn storage roller 21, the yarn guide flyer 22 is no longer rotated with the yarn storage roller 21, and the remaining yarn is unwound through the flyer stopper 85. The mounting hole 85e of the fixing plate 85a is a waist-shaped hole along the expansion and contraction direction of the adjusting cylinder 85 b. The position of the fixing plate 85a can be adjusted back and forth by the slotted hole design to ensure contact with the yarn guiding flyer 22.

The control section 5 receives a signal from the yarn breakage sensor 78, transmits a control signal to the splicing work carriage 3, and causes the splicing work carriage 3 to travel to the spinning mechanism 2 where the yarn splicing operation is performed, thereby starting the yarn splicing operation control. First, the control section 5 controls the draft device 7, the spinning section 9, and the like to operate again, restarts the generation of the spun yarn 10, and in parallel with the restart of the spun yarn 10, the control section 5 controls the suction tube 44 to rotate to the vicinity of the downstream side of the spinning section 9, and causes the suction tube 44 to generate suction flow and control the end (upper yarn) of the spun yarn 10 fed out from the spinning section 9, and then controls the motor rotation of the yarn accumulating roller 21 to rotate the suction tube 44 downward while continuing the suction, and the spun yarn 10 is drawn out from the spinning section 9 by the suction tube 44, guided by the refrigerator yarn accumulating roller 21 and the splicer 43.

The yarn suction tube 44 is rotatable in the vertical direction about the axis, sucks and catches the end of the yarn fed out from the spinning section 9, winds the spun yarn 10 around the yarn storage roller 21 by a flyer during the suction, and continues to be guided to the splicer 43 below the splicer 43.

The splicer 43 splices the yarn (lower yarn) that has entered the holding portion 77 at the end of the spun yarn 10 to the end of the yarn (upper yarn) caught and guided by the yarn suction tube 44 at a predetermined position. The splicer 43 is omitted from detail, and the splicer 43 splices the upper yarn and the lower yarn by twisting the yarn ends together with the airflow of the twist air.

The operation of the spinning machine 1 according to the present embodiment in the case where a defect is detected in the spun yarn 10 will be described with reference to fig. 5 to 9.

When the upper yarn and the lower yarn are guided to the splicer 43, the splicing by the splicer 43 is performed, and the spun yarn 10 by the spinning section 9 is continuously spun during the splicing. In the piecing process, the winding by the winding device is stopped, but the spun yarn 10 is continuously fed out from the spun yarn section 9 during this time, and therefore the spun yarn 10 is continuously wound around the yarn accumulating roller 21, and slack of the spun yarn 10 is prevented.

When the splicing by the splicer 43 is completed, the control section 5 controls the winding drum 72 to rotate and rotate the package 45, thereby restarting the winding of the spun yarn 10. In addition, the package 45 and the winding drum 72 are always in contact, and there is no impact caused by the package 45 and the winding drum 72 being separately closed as in the other solutions.

Accordingly, a special mechanism for adjusting the position of the package 45 is not required, and therefore the structure of the splicing work carriage 3 can be simplified.

The spinning machine 1 of the present embodiment includes a spinning section 9, a yarn accumulating roller 21, a yarn suction tube 44, and a splicer 43, and the yarn suction tube 44 captures and guides a yarn end portion from the spinning section 9. The splicer 43 connects the yarn that enters the holding portion 77 from the end of the spun yarn 10 and is at a predetermined position (a lower yarn) to the yarn end captured by the yarn suction tube 44.

Thus, the splicer 43 can control splicing accurately without braking the package 45, reversely rotating the yarn defects, and sucking and guiding the yarn by the guide portion (large suction nozzle) in the case where the brake portion, the reverse rotation roller, and the guide portion (large suction nozzle) of the package 45 are not present. As a result, the yarn defect is not unwound from the package 45, and the braking of the package 45 is not performed, and the splicing operation by the splicing work carriage 3 can be smoothly performed. Splicing efficiency is improved by 30% and package 45 wear and impact are reduced.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A yarn spinning mechanism, comprising: the yarn storage device comprises a yarn storage roller and a yarn guide flyer, wherein a retractable and movable flyer stopper is arranged on one side of the yarn guide flyer, and the flyer stopper controls the yarn storage device to unwind yarns when the yarns are broken.

2. A yarn spinning mechanism as claimed in claim 1, wherein: the winding part is connected with a braking part which drives the winding part to rotate independently.

3. A yarn spinning mechanism as claimed in claim 1, wherein: the flyer stopper comprises a fixed plate, an adjusting cylinder is mounted on the fixed plate, the adjusting cylinder contacts with the yarn guide flyer after stretching, a plurality of mounting holes are formed in the fixed plate, and the mounting holes are waist-shaped holes along the stretching direction of the adjusting cylinder.

4. A yarn spinning mechanism as claimed in claim 2, wherein: the winding part comprises a bobbin for winding yarn, the surface of the bobbin is in contact with the braking part, and an angle adjusting device is connected with the bobbin.

5. A yarn spinning mechanism as claimed in claim 4, wherein: the angle adjusting device comprises a rocker arm frame connected with two ends of the bobbin, the bottom of the rocker arm frame is hinged with a rotating block, and the rotating block is connected with a driving mechanism.

6. A yarn spinning mechanism as claimed in claim 5, wherein: the driving mechanism is a driving air cylinder, and the rotating block is provided with an ejector rod matched with a piston rod of the driving air cylinder.

7. A yarn spinning mechanism as claimed in claim 2, wherein: the braking portion includes a winding drum in contact with a surface of the winding portion, and the winding drum is connected with a motor driving the winding drum to rotate.

8. A yarn spinning mechanism as claimed in claim 1, wherein: an electronic yarn cleaner and a tension sensor are arranged between the output device and the yarn storage device, and a yarn sensor, a holding part with negative pressure and a yarn breakage sensor are sequentially arranged between the yarn storage device and the winding part.

9. A yarn spinning mechanism as claimed in claim 1, wherein: the yarn winding device further comprises a traversing gear, and the traversing gear controls the yarn to traverse and wind into a package.

10. A yarn spinning mechanism as claimed in any one of claims 1 to 9, wherein: the automatic spinning machine further comprises a control part, and the control part controls the automatic operation of the whole spinning mechanism.