Constant yarn storage device

Abstract

The application relates to the field of textiles, and particularly relates to a constant yarn storage device which comprises a main shell, a main transmission shaft is arranged in the middle of the main shell, a hollow transmission shaft and a yarn storage cylinder transmission shaft are coaxially arranged on one side of the main transmission shaft in the main shell, the bottom of the yarn storage cylinder transmission shaft is in transmission connection with the main transmission shaft, a yarn storage cylinder is fixedly sleeved on the middle part of the yarn storage cylinder transmission shaft, a yarn winding swing arm is rotatably sleeved on the upper part of the yarn storage cylinder transmission shaft, and the upper end of the yarn winding swing arm is fixedly connected with the bottom end of the hollow transmission shaft; a main transmission gear is installed on the main transmission shaft, a secondary transmission gear is installed on the hollow transmission shaft, and the main transmission gear and the secondary transmission gear are in transmission connection through a jaw clutch type double clutch mechanism; a yarn winding swing arm in-place detection sensor is arranged on one side of the hollow transmission shaft in the main shell. Yarn on the yarn storage cylinder can be replenished more accurately.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to a constant yarn storage device. Background Technology

[0002] In textile production, the yarn feeder is a crucial component of the textile machine. For increasingly sophisticated automatic yarn changing machines, the yarn in the yarn feeder needs to maintain a continuous output during the automatic yarn changing process. Since the automatic yarn changer is installed in the preceding stage of the yarn feeder, it needs to stop supplying yarn to the yarn feeder while it is operating. At this time, the yarn stored in the yarn feeder must be used to supply the textile machine. After the automatic yarn changer finishes changing yarn, the appropriate length of yarn needs to be fed into the yarn feeder to ensure a stable yarn quantity. This requires precise detection of the amount of yarn output during the yarn changing process. However, existing detection methods can only control the yarn quantity within a general range and cannot accurately detect the yarn output during the yarn changing process. This results in excessively large errors in the amount of yarn stored in the yarn feeder after each yarn changing. Therefore, existing detection methods are not suitable for textile machines with automatic yarn changing mechanisms. Summary of the Invention

[0003] To address the above-mentioned problems, embodiments of the present invention provide a constant yarn storage device.

[0004] One aspect of this invention provides a constant yarn storage device, comprising a main housing, a main drive shaft disposed in the center of the main housing, a hollow drive shaft and a yarn storage cylinder drive shaft coaxially disposed on one side of the main drive shaft within the main housing, the bottom of the yarn storage cylinder drive shaft being connected to the main drive shaft, a yarn storage cylinder being fixedly mounted on the middle of the yarn storage cylinder drive shaft, and a yarn winding swing arm being rotatably mounted on the upper part of the yarn storage cylinder drive shaft, the upper end of the yarn winding swing arm being fixedly connected to the bottom end of the hollow drive shaft; a main drive gear is mounted on the main drive shaft, and a secondary drive gear is mounted on the hollow drive shaft, the main drive gear and the secondary drive gear being connected by a dog clutch dual-clutch mechanism; a yarn winding swing arm positioning detection sensor is disposed on one side of the hollow drive shaft within the main housing.

[0005] Compared with the prior art, the beneficial effects of the present invention are as follows: During operation, the yarn storage cylinder rotates at a constant speed under the drive of the main drive shaft to provide yarn to the next process. When the automatic yarn changer starts changing yarn, the dog clutch dual-clutch mechanism activates to realize the transmission between the main drive gear and the auxiliary drive gear to ensure that the yarn winding arm and the yarn storage cylinder rotate synchronously. At the same time, the yarn winding arm position detection sensor detects the number of rotations of the yarn winding arm. When the automatic yarn changer finishes changing yarn, the dog clutch dual-clutch mechanism activates to make the yarn winding arm and the yarn storage cylinder rotate in opposite directions. After the yarn winding arm position detection sensor detects the corresponding number of rotations of the yarn winding arm in the opposite direction, the dog clutch dual-clutch mechanism activates to disconnect the transmission between the main drive gear and the auxiliary drive gear, so as to achieve more precise replenishment of yarn on the yarn storage cylinder. In addition, relying on the dual-clutch mechanism, when the clutch is in the disengaged state, it can effectively decelerate the yarn winding arm, play a damping role, and prevent excessive inertia from causing the rotation of the yarn winding arm to exceed the preset position.

[0006] Preferably, a yarn winding positioning mechanism is also provided inside the main housing. The yarn winding positioning mechanism includes a stepper motor located on the side of the main drive shaft away from the hollow drive shaft. A one-way bearing and a first-stage transmission gear are provided on the output shaft of the stepper motor. A positioning swing arm is fixedly fitted on the outer sleeve of the one-way bearing. A second-stage transmission gear that meshes with the first-stage transmission gear is provided at the first end of the positioning swing arm. A third-stage transmission gear that is opposite to the second-stage transmission gear is rotatably fitted on the main drive shaft. When the stepper motor is working, it drives the second-stage transmission gear to move through the one-way bearing and the positioning swing arm, thereby separating or engaging with the third-stage transmission gear. A fourth-stage transmission gear is provided inside the main housing between the main drive shaft and the hollow drive shaft. The fourth-stage transmission gear meshes with the third-stage transmission gear. A fifth-stage transmission gear that meshes with the fourth-stage transmission gear is fixedly fitted on the hollow drive shaft.

[0007] Preferably, a positioning tension spring is provided between the second end of the positioning swing arm and the main housing, a positioning swing arm limiting groove is provided on the main housing, and a limiting post is provided at the bottom of the second end of the positioning swing arm, with the limiting post placed in the positioning swing arm limiting groove.

[0008] Preferably, the jaw-type dual-clutch mechanism includes a clutch group A, a clutch group B, and a clutch bridge gear; the clutch bridge gear meshes with the main drive gear; the clutch group A includes a clutch drive shaft A; an active half-clutch gear A is rotatably sleeved on the upper part of the clutch drive shaft A, which meshes with the clutch bridge gear; a clutch power output gear A is fixedly sleeved on the lower part of the clutch drive shaft A, which meshes with the auxiliary drive gear; a passive half-clutch gear A is slidably sleeved on the middle part of the clutch drive shaft A; a pusher unit A is provided between the passive half-clutch gear A and the clutch power output gear A, which is used to drive the passive half-clutch gear A to mesh or disengage with the active half-clutch gear A;

[0009] Clutch group B has the same structure as clutch group A, including clutch drive shaft B, active half-clutch gear B, clutch power output gear B, passive half-clutch gear B, and push unit B. The active half-clutch gear B meshes with the active half-clutch gear A, and the clutch power output gear B meshes with the auxiliary transmission gear.

[0010] Preferably, the push unit A includes a clutch groove A arranged circumferentially on the passive half-clutch gear A, a push-pull electromagnet A on one side of the passive half-clutch gear A, a mounting plate A fixed on one side of the push-pull electromagnet A, a clutch slider A slidably arranged vertically on the mounting plate A, a fork arm A arranged on the side of the clutch slider A adjacent to the passive half-clutch gear A, the fork arm A engaging the clutch groove A, a slider control rod A hinged on the mounting plate A on one side of the clutch slider A, the short arm of the slider control rod A connected to the clutch slider A, and the long arm of the slider control rod A connected to the bottom end of the output core of the push-pull electromagnet A; a guide groove A is provided on the passive half-clutch gear A, a guide post A adapted to the guide groove A is provided on the clutch power output gear A, and a telescopic spring A is sleeved on the guide post A.

[0011] Preferably, a magnet positioning detection sensor A is provided at the top of the output core of the push-pull electromagnet A.

[0012] Preferably, a primary transmission gear for the yarn storage cylinder is fixedly sleeved at the bottom of the main drive shaft, a tertiary transmission gear for the yarn storage cylinder is fixedly sleeved at the bottom of the yarn storage cylinder drive shaft, and a secondary transmission gear for the yarn storage cylinder is configured to drive between the primary and tertiary transmission gears. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, are not intended to limit the scope of the invention. In the drawings:

[0014] Figure 1 This is a three-dimensional structural diagram of a constant yarn storage device provided in an embodiment of the present invention;

[0015] Figure 2 This is a cross-sectional structural schematic diagram of a constant yarn storage device provided in an embodiment of the present invention;

[0016] Figure 3 A three-dimensional structural schematic diagram of a yarn winding positioning mechanism provided in an embodiment of the present invention;

[0017] Figure 4 A schematic diagram of the transmission structure of a yarn winding positioning mechanism provided in an embodiment of the present invention;

[0018] Figure 5 This is a cross-sectional structural schematic diagram of a positioning swing arm provided in an embodiment of the present invention;

[0019] Figure 6A three-dimensional structural diagram of a tooth-clutch type dual-clutch mechanism provided in an embodiment of the present invention;

[0020] Figure 7 This is a cross-sectional view of the transmission part in a jaw clutch dual-clutch mechanism provided in an embodiment of the present invention;

[0021] Figure 8 This is a top view schematic diagram of a fork arm structure provided in an embodiment of the present invention.

[0022] The components include: 1. Main housing; 2. Main drive shaft; 3. Hollow drive shaft; 4. Yarn storage cylinder drive shaft; 5. Yarn storage cylinder; 6. Winding swing arm; 7. Main drive gear; 8. Secondary drive gear; 9. Jaw-type dual clutch mechanism; 10. Winding swing arm positioning sensor; 11. Synchronous pulley; 12. Tension bar; 13. Yarn; 14. Winding positioning mechanism; 15. Stepper motor; 16. One-way bearing; 17. First-stage drive gear; 18. Positioning swing arm; 19. Second-stage drive gear; 20. Third-stage drive gear; 21. Fourth-stage drive gear; 22. Fifth-stage drive gear; 23. Positioning tension spring; 24. Positioning swing arm limiting groove; 25. Limiting post; 26. Clutch bridge gear; 27. Clutch drive shaft A 28. Active half-clutch gear A; 29. ​​Clutch power output gear A; 30. Passive half-clutch gear A; 31. Clutch drive shaft B; 32. Active half-clutch gear B; 33. Clutch power output gear B; 34. Passive half-clutch gear B; 35. Clutch slot A; 36. Push-pull electromagnet A; 37. Mounting plate A; 38. Clutch slider A; 39. Fork arm A; 40. Slider control rod A; 41. Telescopic spring A; 42. Magnet position detection sensor A; 43. Clutch slot B; 44. Push-pull electromagnet B; 45. Telescopic spring B; 46. Magnet position detection sensor B; 47. First-stage transmission gear of yarn storage cylinder; 48. Third-stage transmission gear of yarn storage cylinder; 49. Second-stage transmission gear of yarn storage cylinder. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this invention are used to explain the invention, but are not intended to limit the invention.

[0024] See Figures 1-8This invention provides a constant yarn storage device, comprising a main housing 1, a main drive shaft 2 disposed in the middle of the main housing 1, a hollow drive shaft 3 and a yarn storage cylinder drive shaft 4 coaxially disposed on one side of the main drive shaft 2 within the main housing 1, the bottom of the yarn storage cylinder drive shaft 4 being connected to the main drive shaft 2, a yarn storage cylinder 5 being fixedly mounted on the middle of the yarn storage cylinder drive shaft 4, and a yarn winding swing arm 6 being rotatably mounted on the upper part of the yarn storage cylinder drive shaft 4, the upper end of the yarn winding swing arm 6 being fixedly connected to the bottom end of the hollow drive shaft 3; a main drive gear 7 is mounted on the main drive shaft 2, and a secondary drive gear 8 is mounted on the hollow drive shaft 3, the main drive gear 7 and the secondary drive gear 8 being connected by a dog clutch dual clutch mechanism 9; a yarn winding swing arm positioning detection sensor 10 is disposed on one side of the hollow drive shaft 3 within the main housing 1.

[0025] In practice, a synchronous wheel 11 is provided at the top of the main drive shaft 2 for an external drive motor to drive the main drive shaft 2 to rotate; a tension bar 12 is provided on the main housing 1 at the yarn output end for detecting the tension of the yarn 13 and completing an emergency stop when the yarn 13 slackens; yarn threading ceramic eyes can be installed at both the upper and lower ends of the hollow drive shaft 3 to prevent the yarn from being scratched.

[0026] During operation, the yarn storage cylinder 5 rotates at a constant speed under the drive of the main drive shaft 2 to supply yarn 13 to the next-level textile machine. When the automatic yarn changer starts changing yarn, the dog clutch dual-clutch mechanism 9 activates to realize the transmission between the main drive gear 7 and the auxiliary drive gear 8 to ensure that the winding arm 6 and the yarn storage cylinder 5 rotate synchronously. At the same time, the winding arm position detection sensor 10 detects the number of rotations of the winding arm 6. When the automatic yarn changer finishes changing yarn, the dog clutch dual-clutch mechanism 9 activates to make the winding arm 6 and the yarn storage cylinder 5 rotate in opposite directions. After the winding arm position detection sensor 10 detects the corresponding number of rotations of the winding arm 6 in the opposite direction, the dog clutch dual-clutch mechanism 9 activates to disconnect the transmission between the main drive gear 7 and the auxiliary drive gear 8, completing the replenishment of yarn 13.

[0027] In one implementation, to further increase the accuracy of yarn replenishment, a yarn winding positioning mechanism 14 is also provided inside the main housing 1. The yarn winding positioning mechanism 14 includes a stepper motor 15 located on the side of the main drive shaft 2 away from the hollow drive shaft 3. A one-way bearing 16 and a first-stage transmission gear 17 are provided on the output shaft of the stepper motor 15. A positioning swing arm 18 is fixedly fitted on the outer sleeve of the one-way bearing 16. A second-stage transmission gear 19 that meshes with the first-stage transmission gear 17 is provided at the first end of the positioning swing arm 18. The main drive shaft 2 rotates... The moving sleeve is equipped with a third-stage transmission gear 20 that is opposite to the second-stage transmission gear 19. When the stepper motor 15 is working, it drives the second-stage transmission gear 19 to move through the one-way bearing 16 and the positioning swing arm 18, thereby separating or engaging with the third-stage transmission gear 20. A fourth-stage transmission gear 21 is provided in the main housing 1 between the main transmission shaft 2 and the hollow transmission shaft 3. The fourth-stage transmission gear 21 engages with the third-stage transmission gear 20. A fifth-stage transmission gear 22 that engages with the fourth-stage transmission gear 21 is fixedly sleeved on the hollow transmission shaft 3.

[0028] In practice, the yarn winding swing arm positioning detection sensor 10 can be set on the fifth-stage transmission gear 22.

[0029] After adding the yarn winding positioning mechanism 14, during the reverse yarn replenishment process, the yarn winding swing arm 6 and the yarn storage cylinder 5 can first be reversed by the action of the dog clutch double clutch mechanism 9. After the yarn winding swing arm 6 has rotated a first number of times in the reverse direction by the yarn winding swing arm position detection sensor 10, the dog clutch double clutch mechanism 9 will disengage the transmission between the main drive gear 7 and the auxiliary drive gear 8. At the same time, the stepper motor 15 will be activated. During the rotation of its output shaft, the second-stage drive gear 19 will be driven to rotate between the first-stage drive gear 17 and the third-stage drive gear 20 through the one-way bearing 16 and the positioning swing arm 18, and finally mesh with the first-stage drive gear 17 and the third-stage drive gear 20. Under the action of the one-way bearing 16, the second-stage drive gear 19 will be kept in place. The transmission between the first-stage transmission gear 17 and the third-stage transmission gear 20 is in a state that does not affect the normal rotation of the output shaft of the stepper motor 15. The third-stage transmission gear 20 drives the fifth-stage transmission gear 22 to rotate through the fourth-stage transmission gear 21, thereby driving the yarn winding arm 6 to continue rotating for a second number of turns through the hollow transmission shaft 3. The sum of the first number of turns and the second number of turns is equal to the corresponding number of turns mentioned above. For example, if the yarn winding arm 6 needs to rotate 10 turns in the opposite direction, the main transmission gear 7 and the auxiliary transmission gear 8 are first driven to rotate the yarn winding arm 6 9+3 / 4 turns through the dog clutch double clutch mechanism 9. When there is 1 / 4 turn left, the dog clutch double clutch mechanism 9 is disengaged, and the yarn winding positioning mechanism 14 completes the last 1 / 4 turn of yarn replenishment.

[0030] In practice, a positioning tension spring 23 is provided between the second end of the positioning swing arm 18 and the main housing 1 to assist the movement of the positioning swing arm 18; a positioning swing arm limiting groove 24 is provided on the main housing 1, and a limiting post 25 is provided at the bottom of the second end of the positioning swing arm 18. The limiting post 25 is placed in the positioning swing arm limiting groove 24 to limit the swing range of the positioning swing arm 18. In addition, a positioning swing arm position detection sensor can be installed at the second end of the positioning swing arm 18 to determine whether the positioning swing arm 18 has swung into place.

[0031] In implementation, the jaw clutch dual-clutch mechanism includes clutch group A, clutch group B, and clutch bridge gear 26; clutch bridge gear 26 meshes with main drive gear 7, clutch group A includes clutch drive shaft A27, the upper part of clutch drive shaft A27 is rotatably sleeved with active half clutch gear A28, active half clutch gear A28 meshes with clutch bridge gear 26, the lower part of clutch drive shaft A27 is fixedly sleeved with clutch power output gear A29, clutch power output gear A29 meshes with auxiliary drive gear 8, the middle part of clutch drive shaft A27 is slidably sleeved with passive half clutch gear A30, a push unit A is provided between passive half clutch gear A30 and clutch power output gear A29, push unit A is used to drive passive half clutch gear A30 to mesh or disengage with active half clutch gear A28;

[0032] Clutch group B has the same structure as clutch group A, including clutch drive shaft B31, active half-clutch gear B32, clutch power output gear B33, passive half-clutch gear B34, and push unit B. Among them, active half-clutch gear B32 meshes with active half-clutch gear A28, and clutch power output gear B33 meshes with auxiliary transmission gear 8.

[0033] Specifically, the jacking unit A includes a clutch slot A35 circumferentially arranged on the passive half-clutch gear A30, a push-pull electromagnet A36 on one side of the passive half-clutch gear A30, a mounting plate A37 fixed on one side of the push-pull electromagnet A36, a clutch slider A38 vertically slidably arranged on the mounting plate A37, a fork arm A39 arranged on the side of the clutch slider A38 adjacent to the passive half-clutch gear A30, the fork arm A39 being engaged in the clutch slot A35, a slider control rod A40 hinged on the mounting plate A37 on one side of the clutch slider A38, the short arm of the slider control rod A40 being connected to the clutch slider A38, and the long arm of the slider control rod A40 being connected to the bottom end of the output iron core of the push-pull electromagnet A36; a guide groove A is provided on the passive half-clutch gear A30, a guide post A adapted to the guide groove A is provided on the clutch power output gear A29, and a telescopic spring A41 is sleeved on the guide post A.

[0034] The top of the output core of the push-pull electromagnet A36 is equipped with a magnet positioning detection sensor A42, which is used to detect whether the output core has moved to the correct position. In actual use, the function of the push unit is not limited to the use of electromagnets. Any other power mechanism that can realize the engagement or disengagement of the passive half-clutch gear and the active half-clutch gear, such as cylinders, electric push rods, and geared motors, can be regarded as an equivalent replacement structure.

[0035] The jacking unit B has the same structure as the jacking unit A, including a clutch slot B43, a push-pull electromagnet B44, a mounting plate B, a clutch slider B, a fork arm B, a slider control rod B, a guide groove B, a guide post B, a telescopic spring B45, and a magnet positioning detection sensor B46.

[0036] In practice, a primary transmission gear 47 for the yarn storage cylinder is fixedly sleeved at the bottom of the main drive shaft 2, and a tertiary transmission gear 48 for the yarn storage cylinder is fixedly sleeved at the bottom of the yarn storage cylinder drive shaft 4. A secondary transmission gear 49 for the yarn storage cylinder is installed between the primary transmission gear 47 and the tertiary transmission gear 48, thus completing the transmission connection between the main drive shaft 2 and the yarn storage cylinder drive shaft 4.

[0037] During the preparation stage, yarn 13 is inserted through the hollow drive shaft 3, passes through the yarn winding arm 6, and is wound on the yarn storage cylinder 5 in a certain quantity. Finally, it passes through the tension bar 12 and is fed out to the textile machine. The stepper motor 15 is activated, causing the second-stage transmission gear 19 to mesh with the third-stage transmission gear 20, thereby driving the yarn winding arm 6 to rotate and position it at the zero position before stopping.

[0038] During operation, the main drive shaft 2 drives the yarn storage cylinder 5 to rotate at a constant speed and continuously supply yarn to the textile machine. The push-pull electromagnets A36 and B44 are energized, and the output iron cores of the push-pull electromagnets A36 and B44 respectively raise the long arms of the slider control rods A40 and B, and the corresponding short arms press down the clutch sliders A38 and B. Thus, the fork arms A39 and B press down the corresponding passive half-clutch gears A30 and B34, keeping the passive half-clutch gear A30 separated from the active half-clutch gear A28, and the passive half-clutch gear B34 separated from the active half-clutch gear B32.

[0039] When the automatic yarn changer starts changing yarn, the stepper motor 15 reverses, causing the second-stage transmission gear 19 to separate from the third-stage transmission gear 20, and the yarn winding arm 6 is in a free state. At this time, the push-pull electromagnet A36 remains stationary, the push-pull electromagnet B44 is de-energized, and the passive half-clutch gear B34 is pushed upward by the extension spring B45, and meshes with the active half-clutch gear B32. Through the clutch bridge gear 26, the active half-clutch gear A28 and the active half-clutch gear B32, the clutch power output gear B33 is driven to rotate, thereby driving the yarn winding arm 6 and the yarn storage cylinder 5 to rotate synchronously through the auxiliary transmission gear 8 and the hollow transmission shaft 3. During the rotation, the number of rotations is recorded by the yarn winding arm positioning detection sensor 10.

[0040] When the automatic yarn changer finishes its yarn changing operation, the push-pull electromagnet B44 is energized, causing the passive half-clutch gear B34 to disengage from the active half-clutch gear B32. The magnet position detection sensor B46 then determines when the output core of the push-pull electromagnet B44 has reached its designated position. At this point, the push-pull electromagnet A36 is de-energized, and the passive half-clutch gear A30 engages with the active half-clutch gear A28. Through the clutch bridge gear 26 and the active half-clutch gear A28, the clutch power output gear A29 rotates, driving the yarn winding arm 6 and the yarn storage cylinder 5 to rotate in opposite directions via the auxiliary transmission gear 8 and the hollow transmission shaft 3. The number of reverse rotations is recorded.

[0041] When the first number of reverse rotations are completed, the push-pull electromagnet B44 remains stationary, and the push-pull electromagnet A36 is energized, causing the passive half-clutch gear A30 to disengage from the active half-clutch gear A28. When the magnet positioning detection sensor A42 determines that the output core of the push-pull electromagnet A36 has reached the correct position, the stepper motor 15 starts to operate. Through the one-way bearing 16 and the positioning swing arm 18, the stepper motor 15 drives the second-stage transmission gear 19 to rotate, completing the transmission between the first-stage transmission gear 17 and the third-stage transmission gear 20. Subsequently, driven by the first-stage transmission gear 17, the stepper motor 15 drives the fifth-stage transmission gear 22 to rotate through the second-stage transmission gear 19, the third-stage transmission gear 20, and the fourth-stage transmission gear 21. This drives the yarn winding swing arm 6 to continue rotating for a second number of rotations through the hollow transmission shaft 3. When the yarn winding swing arm 6 returns to the initial zero position, the stepper motor 15 stops working to complete the yarn replenishment.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A constant yarn storage device, comprising a main housing, wherein a main drive shaft is disposed in the center of the main housing, characterized in that, Inside the main housing, a hollow drive shaft and a yarn storage cylinder drive shaft are coaxially arranged on one side of the main drive shaft. The bottom of the yarn storage cylinder drive shaft is connected to the main drive shaft, and a yarn storage cylinder is fixedly mounted in the middle of the yarn storage cylinder drive shaft. A yarn winding swing arm is rotatably mounted on the upper part of the yarn storage cylinder drive shaft, and the upper end of the yarn winding swing arm is fixedly connected to the bottom end of the hollow drive shaft. A main drive gear is installed on the main drive shaft, and a secondary drive gear is installed on the hollow drive shaft. The main drive gear and the secondary drive gear are connected by a dog clutch dual-clutch mechanism. A yarn winding swing arm positioning detection sensor is located inside the main housing on one side of the hollow drive shaft. The jaw clutch dual-clutch mechanism includes clutch group A, clutch group B, and clutch bridge gear; the clutch bridge gear meshes with the main drive gear. Clutch group A includes clutch drive shaft A, with a driving half-clutch gear A rotatably sleeved on the upper part of clutch drive shaft A, which meshes with the clutch bridge gear. A clutch power output gear A is fixedly sleeved on the lower part of clutch drive shaft A, which meshes with the auxiliary drive gear. A driven half-clutch gear A is slidably sleeved in the middle of clutch drive shaft A. A pusher unit A is provided between the driven half-clutch gear A and the clutch power output gear A, which is used to drive the driven half-clutch gear A to engage or disengage with the driving half-clutch gear A. Clutch group B has the same structure as clutch group A, including clutch drive shaft B, active half-clutch gear B, clutch power output gear B, passive half-clutch gear B, and push unit B. The active half-clutch gear B meshes with the active half-clutch gear A, and the clutch power output gear B meshes with the auxiliary transmission gear.

2. The constant yarn storage device as described in claim 1, characterized in that, The main housing also includes a yarn winding positioning mechanism, which consists of a stepper motor located on the side of the main drive shaft away from the hollow drive shaft. The output shaft of the stepper motor is equipped with a one-way bearing and a first-stage transmission gear. A positioning swing arm is fixedly mounted on the outer sleeve of the one-way bearing. The first end of the positioning swing arm is equipped with a second-stage transmission gear that meshes with the first-stage transmission gear. A third-stage transmission gear, which is opposite to the second-stage transmission gear, is rotatably mounted on the main drive shaft. When the stepper motor is working, it drives the second-stage transmission gear to move through the one-way bearing and the positioning swing arm, thereby separating or engaging with the third-stage transmission gear. A fourth-stage transmission gear is located between the main drive shaft and the hollow drive shaft inside the main housing. The fourth-stage transmission gear meshes with the third-stage transmission gear. A fifth-stage transmission gear, which meshes with the fourth-stage transmission gear, is fixedly mounted on the hollow drive shaft.

3. The constant yarn storage device as described in claim 2, characterized in that, A positioning tension spring is provided between the second end of the positioning swing arm and the main housing. A positioning swing arm limiting groove is provided on the main housing. A limiting post is provided at the bottom of the second end of the positioning swing arm, and the limiting post is placed in the positioning swing arm limiting groove.

4. The constant yarn storage device as described in claim 1, characterized in that, The jacking unit A includes a clutch groove A circumferentially arranged on a passive half-clutch gear A, a push-pull electromagnet A on one side of the passive half-clutch gear A, a mounting plate A fixed on one side of the push-pull electromagnet A, a clutch slider A vertically slidably arranged on the mounting plate A, a fork arm A arranged on the side of the clutch slider A adjacent to the passive half-clutch gear A, the fork arm A engaging the clutch groove A, a slider control rod A hinged on the mounting plate A on one side of the clutch slider A, the short arm of the slider control rod A connected to the clutch slider A, and the long arm of the slider control rod A connected to the bottom end of the output core of the push-pull electromagnet A; a guide groove A is provided on the passive half-clutch gear A, and a guide post A adapted to the guide groove A is provided on the clutch power output gear A, and a telescopic spring A is sleeved on the guide post A.

5. The constant yarn storage device as described in claim 4, characterized in that, A magnet positioning detection sensor A is installed at the top of the output core of the push-pull electromagnet A.

6. The yarn storage tube as described in claim 1, characterized in that, The bottom of the main drive shaft is fixedly fitted with a first-stage drive gear for the yarn storage cylinder, and the bottom of the yarn storage cylinder drive shaft is fixedly fitted with a third-stage drive gear for the yarn storage cylinder. A second-stage drive gear for the yarn storage cylinder is installed between the first-stage drive gear and the third-stage drive gear for the yarn storage cylinder.

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