Brake positioning device

Abstract

The application relates to the technical field of textiles, in particular to a braking and positioning device, which comprises a main shell, a main transmission shaft is arranged in the main shell, a clutch is coaxially sleeved on the main transmission shaft, a transmission gear coaxial with the main transmission shaft is sleeved on the output end of the clutch, a yarn winding mechanism is coaxially rotationally sleeved on the main transmission shaft below the transmission gear, and the output end of the clutch is connected with the yarn winding mechanism; a stepping motor is arranged on one side of the main transmission shaft in the main shell, a one-way bearing and a motor gear are arranged on the output shaft of the stepping motor, a positioning swing arm is fixedly sleeved on the outer sleeve of the one-way bearing, a swing arm gear meshing with the motor gear is arranged on the first end of the positioning swing arm close to the main transmission shaft, and the stepping motor can drive the swing arm gear to move through the one-way bearing and the positioning swing arm when the stepping motor works, so that the swing arm gear is separated from or meshes with the transmission gear. The braking, positioning or locking of the yarn winding mechanism to a specified position can be completed.

Description

Technical Field

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

[0002] In textile production, the yarn feeder is a crucial structural component of the textile machine. Its ability to stably deliver yarn is paramount. With the continuous upgrading of textile machines, the demand for yarn feeders capable of outputting yarns of irregular lengths is increasing. Existing yarn feeder structures of this type mostly employ motor drive, relying on detection devices around the yarn drum to control the motor's start and stop. During yarn delivery, the starting and stopping position of the yarn drum has a relatively large error each time, resulting in inaccurate positioning and affecting the stability of yarn output. Summary of the Invention

[0003] To address the above problems, embodiments of the present invention provide a braking positioning device.

[0004] One aspect of this invention provides a braking and positioning device, comprising a main housing, a main drive shaft disposed within the main housing, a clutch coaxially mounted on the main drive shaft, a transmission gear coaxial with the main drive shaft mounted on the output end of the clutch, a yarn winding mechanism coaxially rotatably mounted on the main drive shaft below the transmission gear, and the output end of the clutch connected to the yarn winding mechanism; a stepper motor disposed within the main housing on one side of the main drive shaft, a one-way bearing and a motor gear disposed on the output shaft of the stepper motor, a positioning swing arm fixedly mounted on the outer sleeve of the one-way bearing, and a swing arm gear meshing with the motor gear disposed at the first end of the positioning swing arm near the main drive shaft, wherein when the stepper motor is working, it can drive the swing arm gear to move through the one-way bearing and the positioning swing arm, thereby separating or engaging with the transmission gear.

[0005] Compared with the prior art, the beneficial effects of the present invention are as follows: During normal operation, the clutch engages, and the main drive shaft is driven to rotate by an external power mechanism, thereby driving the yarn winding mechanism to rotate and feed yarn through the clutch and transmission gear; when it is necessary to brake, position or lock the yarn winding mechanism to a designated position, the clutch disengages, and at the same time the stepper motor is activated, driving the swing arm gear to mesh with the transmission gear through the one-way bearing and positioning swing arm, and then the stepper motor drives the yarn winding mechanism to rotate, completing the braking, positioning or locking of the yarn winding mechanism to a designated position.

[0006] Optionally, the clutch includes an active half-clutch mechanism fixedly mounted on the main drive shaft and a passive half-clutch mechanism movably mounted on the main drive shaft and located below the active half-clutch mechanism. The bottom surface of the active half-clutch mechanism and the top surface of the passive half-clutch mechanism are provided with teeth that can mesh with each other. The transmission gear is fixedly mounted on the outer periphery of the passive half-clutch mechanism. A clutch drive mechanism is provided inside the main housing on one side of the passive half-clutch mechanism. The clutch drive mechanism is used to drive the passive half-clutch mechanism to engage or disengage from the active half-clutch mechanism.

[0007] Optionally, the clutch drive mechanism includes a slider liner disposed in the main housing, a push-pull electromagnet is vertically disposed on the slider liner, and a control slider is vertically slidably disposed on the side of the slider liner located near the passive half-clutch mechanism of the push-pull electromagnet. The push-pull electromagnet is connected to the control slider in a transmission manner to drive the control slider to move vertically. A control fork arm is disposed on the control slider to engage with the passive half-clutch mechanism.

[0008] Optionally, the yarn winding mechanism includes a buffer disc rotatably mounted on the main drive shaft via a bearing. The top of the buffer disc is movably connected to the passive half-clutch mechanism along the axial direction of the main drive shaft. A yarn storage cylinder is movably connected to the buffer disc in the circumferential direction, and a pressure-relieving spring is provided between the yarn storage cylinder and the buffer disc.

[0009] Optionally, a positioning tension spring is provided between the second end of the positioning swing arm and the main housing, and a positioning swing arm limiting groove is provided on the main housing below the second end of the positioning swing arm. 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.

[0010] Optionally, a detection magnet is provided at the tail of the second end of the positioning arm, and an arrival detection sensor is provided inside the main housing opposite to the detection magnet to detect whether the positioning arm has moved into position.

[0011] Optionally, it also includes a yarn inlet bracket on one side of the yarn winding mechanism and a yarn outlet bracket on the other side of the main housing. A tensioner is provided on the main housing between the yarn inlet and yarn outlet ceramic eyes of the yarn inlet bracket. A yarn inlet tension rod is provided on the main housing near the yarn outlet ceramic eye of the yarn inlet bracket. The top of the yarn inlet tension rod is rotatably connected to the main housing so that the yarn inlet tension rod can swing vertically. A yarn outlet tension rod is provided on the main housing between the yarn inlet and yarn outlet ceramic eyes of the yarn outlet bracket. The top of the yarn outlet tension rod is hinged to the main housing so that the yarn outlet tension rod can swing vertically. A detection sensor is provided on the main housing relative to the swing trajectory of the yarn outlet tension rod.

[0012] Optionally, the detection sensors include detection sensor A, detection sensor B, detection sensor C, and detection sensor D arranged sequentially from top to bottom. 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 schematic diagram of a braking positioning device provided in an embodiment of the present invention;

[0015] Figure 2 This is a cross-sectional schematic diagram of a braking positioning device provided in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the transmission structure in a braking positioning device provided in an embodiment of the present invention;

[0017] Figure 4 This is a cross-sectional structural schematic diagram of a positioning swing arm provided in an embodiment of the present invention;

[0018] Figure 5 A schematic diagram of a clutch transmission component provided in an embodiment of the present invention;

[0019] Figure 6 This is a front view schematic diagram of a clutch drive mechanism provided in an embodiment of the present invention;

[0020] Figure 7 A top view of a clutch drive mechanism provided in an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of a yarn storage mechanism provided in an embodiment of the present invention;

[0022] Figure 9 This is a schematic diagram of the braking and positioning device in a state where no yarn is being supplied, provided by an embodiment of the present invention.

[0023] Figure 10 This is a schematic diagram of the braking and positioning device in the yarn feeding start state provided by an embodiment of the present invention;

[0024] Figure 11 This is a schematic diagram of the braking and positioning device under continuous yarn supply conditions, provided by an embodiment of the present invention.

[0025] Figure 12 This is a schematic diagram of a braking and positioning device in the event of a yarn breakage, provided as an embodiment of the present invention.

[0026] The components include: main housing 1, main drive shaft 2, clutch 3, transmission gear 4, yarn winding mechanism 5, stepper motor 6, one-way bearing 7, motor gear 8, positioning swing arm 9, swing arm gear 10, positioning tension spring 11, positioning tension spring hook 12, positioning swing arm limiting groove 13, limiting post 14, detection magnet 15, position detection sensor 16, active half-clutch mechanism 17, passive half-clutch mechanism 18, clutch drive mechanism 19, slider liner 20, push-pull electromagnet 21, control slider 22, control fork arm 23, buffer plate 24, yarn storage cylinder 25, pressure relief spring 26, clutch control rod 27, yarn infeed bracket 28, yarn outfeed bracket 29, tensioner 30, yarn infeed tension rod 31, yarn outfeed tension rod 32, A detection sensor 33, B detection sensor 34, C detection sensor 35, and D detection sensor 36. Detailed Implementation

[0027] 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.

[0028] See Figures 1-8 The present invention provides a braking and positioning device, comprising a main housing 1, a main drive shaft 2 disposed in the main housing 1, a clutch 3 coaxially mounted on the main drive shaft 2, a transmission gear 4 coaxial with the main drive shaft 2 mounted on the output end of the clutch 3, a bearing being disposed between the transmission gear 4 and the main drive shaft to achieve rotatable engagement between the two, a yarn winding mechanism 5 coaxially rotatably mounted on the main drive shaft 2 below the transmission gear 4, and the output end of the clutch 3 being connected to the yarn winding mechanism 5; a stepper motor 6 disposed on one side of the main drive shaft 2 inside the main housing 1, a one-way bearing 7 and a motor gear 8 disposed on the output shaft of the stepper motor 6, a positioning swing arm 9 fixedly mounted on the outer sleeve of the one-way bearing 7, a swing arm gear 10 meshing with the motor gear 8 disposed at the first end of the positioning swing arm 9 near the main drive shaft 2, when the stepper motor 6 is working, it can drive the swing arm gear 10 to move through the one-way bearing 7 and the positioning swing arm 9, thereby separating or engaging with the transmission gear 4.

[0029] In practice, a positioning tension spring 11 is provided between the second end of the positioning swing arm 9 and the main housing 1 to assist the positioning swing arm 9 in resetting. Specifically, positioning tension spring hooks 12 can be provided on the positioning swing arm 9 and the main housing 1 respectively, and the positioning tension spring 11 is hung between the two positioning tension spring hooks 12. A positioning swing arm limiting groove 13 is provided on the main housing 1 below the second end of the positioning swing arm 9, and a limiting post 14 is provided at the bottom of the second end of the positioning swing arm 9. The limiting post 14 is placed in the positioning swing arm limiting groove 13.

[0030] A detection magnet 15 is provided at the tail of the second end of the positioning arm 9, and a position detection sensor 16 is provided inside the main housing 1, which is opposite to the detection magnet 15, to detect whether the positioning arm 9 has moved into position.

[0031] During operation, the clutch 3 engages, and the main drive shaft 2 is driven to rotate by the external power mechanism. This drives the yarn winding mechanism 5 to rotate via the clutch 3 and the transmission gear 4 to feed yarn. When it is necessary to brake, position, or lock the yarn winding mechanism 5 to a designated position, the clutch 3 disengages, and the stepper motor 6 is activated. This drives the swing arm gear 10 to mesh with the transmission gear 4 via the one-way bearing 7 and the positioning swing arm 9. This, in turn, drives the yarn winding mechanism 5 to rotate via the stepper motor 3, thus completing the braking, positioning, or locking of the yarn winding mechanism 5 to a designated position.

[0032] In specific implementation, the clutch 3 includes an active half-clutch mechanism 17 fixedly mounted on the main drive shaft 2, and a passive half-clutch mechanism 18 movably mounted on the main drive shaft 2 and located below the active half-clutch mechanism 17. The bottom surface of the active half-clutch mechanism 17 and the top surface of the passive half-clutch mechanism 18 are provided with teeth that can mesh with each other. The transmission gear 4 is fixedly mounted on the outer periphery of the passive half-clutch mechanism 18. A clutch drive mechanism 19 is provided inside the main housing 1 on one side of the passive half-clutch mechanism 18. The clutch drive mechanism 19 is used to drive the passive half-clutch mechanism 18 to engage or disengage from the active half-clutch mechanism 17.

[0033] The clutch drive mechanism 19 includes a slider liner 20 disposed in the main housing. A push-pull electromagnet 21 is vertically disposed on the slider liner 20. A control slider 22 is vertically slidably disposed on the side of the slider liner 20 near the passive half-clutch mechanism 18 of the push-pull electromagnet 21. The push-pull electromagnet 21 is connected to the control slider 22 in a transmission manner, which drives the control slider 22 to move vertically. A control fork arm 23 is disposed on the control slider 22 and engages with the passive half-clutch mechanism 18.

[0034] The yarn winding mechanism 5 includes a buffer disc 24 rotatably mounted on the main drive shaft 2 via bearings. The top of the buffer disc 24 is movably connected to the passive half-clutch mechanism 18 along the axial direction of the main drive shaft 2. A yarn storage cylinder 25 is movably connected to the buffer disc 24 around its circumference, and a pressure-relieving spring 26 is provided between the yarn storage cylinder 25 and the buffer disc 24. The pressure-relieving spring 26 can prevent damage to the teeth of the clutch 3 due to excessive load when the clutch 3 is engaged. At the same time, it can delay the start of the yarn storage cylinder 25, which will reduce the impact on the yarn traction when the yarn storage cylinder 25 starts and prevent the yarn from being damaged by sudden excessive tension.

[0035] In practice, the push-pull electromagnet 21 can be a bidirectional electromagnet that directly drives the control slider to move vertically. Alternatively, a common electromagnet can be used. In this case, a clutch control rod 27 can be hinged to the slider liner 20. The short arm of the clutch control rod 27 cooperates with the control slider 22, and the long arm cooperates with the output shaft of the push-pull electromagnet 21. At the same time, the top surface of the buffer plate 24 is provided with a limit post and a guide post. The bottom of the passive half-clutch mechanism 18 is provided with a guide groove and a limit groove that cooperate with the limit post and the guide post. A telescopic spring is sleeved on the guide post. When the push-pull electromagnet 21 is energized, its output shaft moves upward, and the clutch control rod 27 presses down the control slider 22, which in turn presses down the passive half-clutch mechanism 18 to separate it from the active half-clutch mechanism 17 through the control fork arm 23. When the push-pull electromagnet 21 is de-energized, the telescopic spring pushes the passive half-clutch mechanism 18 upward to engage with the active half-clutch mechanism 17.

[0036] During implementation, see Figures 9-12 The braking and positioning device also includes a yarn feeding bracket 28 located on one side of the yarn winding mechanism 5 on the main housing 1 and a yarn output bracket 29 on the other side. A tensioner 30 is provided on the main housing 1 between the yarn feeding eye and the yarn output eye of the yarn feeding bracket 28. A yarn feeding tension rod 31 is provided on the main housing 1 near the yarn output eye of the yarn feeding bracket 28. The top end of the yarn feeding tension rod 31 is rotatably connected to the main housing 1 so that the yarn feeding tension rod 31 can swing vertically. A yarn output tension rod 32 is provided on the main housing 1 between the yarn feeding eye and the yarn output eye of the yarn output bracket 29. The top end of the yarn output tension rod 32 is hinged to the main housing 1 so that the yarn output tension rod 32 can swing vertically. A detection sensor is provided on the main housing 1 relative to the swing trajectory of the yarn output tension rod 32.

[0037] In specific implementation, the detection sensors may include A detection sensor 33, B detection sensor 34, C detection sensor 35 and D detection sensor 36 arranged sequentially from top to bottom.

[0038] During operation, the yarn enters through the infeed ceramic eye on the yarn infeed bracket 28, passes through the tensioner 30 and the infeed tension rod 31 in sequence, and then exits through the yarn outlet ceramic eye on the yarn infeed bracket 28. After being wound several times on the winding mechanism 5, it passes through the infeed ceramic eye of the yarn outlet bracket 29, the yarn outlet tension rod 32, and the yarn outlet ceramic eye of the yarn outlet bracket 29 in sequence to be supplied to the next process. When the next process does not require yarn supply, the yarn outlet tension rod 32 is in the area of ​​the C detection sensor 35, the clutch 3 disengages, the stepper motor 6 engages the swing arm gear 10 with the transmission gear 4 for braking, the braking positioning device is in a locked state, and the yarn forms a V-shaped yarn storage state at the yarn outlet (e.g., Figure 9 As shown), the yarn storage here is to ensure that the clutch 3 and the stepper motor 6 have enough time to complete the operation during work;

[0039] When the next process needs to supply yarn, the yarn is tightened, and the yarn tension bar 32 swings simultaneously. When it swings to the area of ​​the B detection sensor 34 (e.g. Figure 10 As shown), at this time, the stepper motor 6 moves, causing the swing arm gear 10 to disengage from the transmission gear 4. When the position detection sensor 16 confirms that the action is in place, the stepper motor 6 stops, the clutch engages, and the external power mechanism drives the main drive shaft 2 to rotate to feed yarn, and stabilizes the yarn tension rod 32 within the area of ​​the A detection sensor 33 (as shown). Figure 11 (as shown);

[0040] When the next process no longer needs to supply yarn, the yarn winding mechanism 5 continues to supply yarn, causing the yarn at the yarn outlet position to loosen. The yarn outlet tension rod 32 swings downward. When it swings to the area of ​​the B detection sensor 34, the clutch disengages. At the same time, the stepper motor 6 drives the swing arm gear 10 to mesh with the transmission gear 4. After that, the stepper motor 6 continues to drive the yarn winding mechanism 5 to rotate along the direction of the conveying yarn. The yarn becomes looser and looser. The yarn outlet tension rod 32 continues to swing downward under gravity. When it swings to the area of ​​the C detection sensor 35, the stepper motor 6 stops rotating and locks in this position, forming a V-shaped yarn storage state.

[0041] When the yarn is too loose or breaks, the yarn tension bar 32 swings to the area of ​​the D detection sensor 36 (e.g.) Figure 12 As shown), the next process will stop and trigger an alarm; in addition, if the yarn breaks at the yarn feeding position, the yarn feeding tension bar 31 will swing downward under its own weight, which can trigger an alarm.

[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 brake positioning device comprising a main housing in which a main transmission shaft is provided, characterized in that, A clutch is coaxially mounted on the main drive shaft. A transmission gear coaxial with the main drive shaft is mounted on the output end of the clutch. A yarn winding mechanism is coaxially rotatably mounted on the main drive shaft below the transmission gear. The output end of the clutch is connected to the yarn winding mechanism. A stepper motor is installed inside the main housing on one side of the main drive shaft. A one-way bearing and a motor gear are installed on the output shaft of the stepper motor. A positioning swing arm is fixedly mounted on the outer sleeve of the one-way bearing. A swing arm gear that meshes with the motor gear is installed at the first end of the positioning swing arm near the main drive shaft. When the stepper motor is working, it can drive the swing arm gear to move through the one-way bearing and the positioning swing arm, thereby separating or engaging with the transmission gear.

2. The brake positioning device of claim 1, wherein, The clutch includes an active half-clutch mechanism fixedly mounted on the main drive shaft and a passive half-clutch mechanism movably mounted on the main drive shaft and located below the active half-clutch mechanism. The bottom surface of the active half-clutch mechanism and the top surface of the passive half-clutch mechanism are provided with teeth that can mesh with each other. The transmission gear is fixedly mounted on the outer periphery of the passive half-clutch mechanism. A clutch drive mechanism is provided inside the main housing on one side of the passive half-clutch mechanism. The clutch drive mechanism is used to drive the passive half-clutch mechanism to engage or disengage from the active half-clutch mechanism.

3. The braking positioning device as described in claim 2, characterized in that, The clutch drive mechanism includes a slider liner plate disposed inside the main housing. A push-pull electromagnet is vertically disposed on the slider liner plate. A control slider is vertically slidably disposed on the side of the slider liner plate near the push-pull electromagnet and the passive half-clutch mechanism. The push-pull electromagnet is connected to the control slider in a transmission manner, driving the control slider to move vertically. A control fork arm is disposed on the control slider, which engages with the passive half-clutch mechanism.

4. The brake positioning device of claim 2, wherein The yarn winding mechanism includes a buffer disc that is rotatably mounted on the main drive shaft via a bearing. The top of the buffer disc is movably connected to the passive half-clutch mechanism along the axial direction of the main drive shaft. A yarn storage cylinder is movably connected to the buffer disc in the circumferential direction, and a pressure-relieving spring is provided between the yarn storage cylinder and the buffer disc.

5. The brake positioning device of claim 1, wherein, 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 below the second end of the positioning swing arm. 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.

6. The brake positioning device of claim 1, wherein, A detection magnet is provided at the tail end of the second end of the positioning swing arm, and an arrival detection sensor is provided inside the main housing opposite to the detection magnet to detect whether the positioning swing arm has moved into position.

7. The brake positioning device of claim 1, wherein, It also includes a yarn feeding bracket on one side of the yarn winding mechanism and a yarn output bracket on the other side of the main housing. A tensioner is installed on the main housing between the yarn feeding eye and the yarn output eye of the yarn feeding bracket. A yarn feeding tension rod is installed on the main housing near the yarn output eye of the yarn feeding bracket. The top of the yarn feeding tension rod is rotatably connected to the main housing so that the yarn feeding tension rod can swing vertically. A yarn output tension rod is installed on the main housing between the yarn feeding eye and the yarn output eye of the yarn output bracket. The top of the yarn output tension rod is hinged to the main housing so that the yarn output tension rod can swing vertically. A detection sensor is installed on the main housing relative to the swing trajectory of the yarn output tension rod.

8. The brake positioning device of claim 7, wherein, The detection sensors include, from top to bottom, detection sensor A, detection sensor B, detection sensor C, and detection sensor D.

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