A yarn splicing device, a yarn winding device, and a control method

Abstract

The application provides a yarn splicing device, a yarn winding device and a control method, comprising a driving mechanism, a cam mechanism, scissors, a yarn clamping rod, a yarn pressing rod, a yarn pulling rod and a splicer rack, characterized in that: the driving mechanism comprises a motor I, a motor II and a transmission mechanism, the motor I and the motor II are arranged on the two sides of the splicer rack respectively, the motor I independently drives the scissors and the yarn clamping rod through the transmission mechanism and the cam mechanism to complete the yarn clamping and shearing action, and the motor II independently drives the yarn pressing rod and the yarn pulling rod through the transmission mechanism to complete the yarn pressing and pulling action. The control method realizes the independent control of the yarn pressing, yarn pulling and shearing, and yarn clamping actions by controlling the time sequence actions of the motor I and the motor II. Through the improved driving mode, the structure is simplified, the independent control of the yarn pressing, yarn pulling and shearing, and yarn clamping actions is realized, the failure rate is reduced, the action accuracy and adjustability are ensured, the mechanical wear is effectively reduced, and the failure rate and maintenance demand are reduced.

Description

Technical Field

[0001] This invention belongs to the field of textile equipment manufacturing technology and relates to the improvement of splicing technology, specifically a yarn splicing device, a yarn winding device and a control method. Background Technology

[0002] Currently, splicers are widely used in automatic winding machines. Their yarn pressing rods, scissors, yarn clamping mechanisms still adopt a linkage control method with a single drive shaft combined with multiple cam discs and multiple swing arm linkages.

[0003] Chinese patent disclosure (patent number: CN201220442387.2) discloses a splicing device and a yarn winding device. This splicing device uses a common drive source and a disc cam mechanism to perform actions such as pulling the yarn end closer, holding the yarn end, and cutting the yarn end. It also performs actions such as changing the amount of yarn end pulling and adjusting the seam length between yarn ends. Problems and drawbacks of this patent: The structure described in this patent uses a single motor to drive a cam group, and the cam group's transmission linkage performs the actions. Rapid wear between the mechanisms leads to reduced accuracy, the structure is complex, and it is prone to jamming.

[0004] The existing technology has the following drawbacks: 1. The cam wears quickly, and the clearance easily increases, leading to unstable joint quality; 2. The action sequence is fixed and cannot be adjusted online; 3. The structure is complex, requiring a large amount of maintenance and resulting in a high rate of jamming failures; 4. Slow action response speed, making it difficult to adapt to high-speed, multi-variety, and high-requirement splicing operations; 5. Inability to accurately control key splicing actions, making it difficult to improve splicing results; 6. Poor splicing consistency, inconsistent results from multiple splicing operations, and significant mechanical errors. Therefore, it is necessary to develop an improved structure that simplifies the mechanical structure and enables precise control of key actions.

[0005] Therefore, how to design a yarn splicing device, yarn winding device and control method, improve the driving method, reduce the use of cams, simplify the structure, realize the separate and independent control of yarn pressing, yarn pulling and cutting, and yarn clamping actions, reduce the failure rate, thereby ensuring accurate and adjustable actions, effectively reduce mechanical wear and maintenance needs, improve response speed, and adapt to high-speed, multi-variety and high-requirement splicing operations, is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] To address the aforementioned problems and shortcomings of existing technologies, this invention provides a yarn splicing device, a yarn winding device, and a control method. By improving the driving method and simplifying the structure, it enables independent control of yarn pressing, yarn pulling, cutting, and yarn clamping actions, reducing the failure rate and ensuring precise and adjustable actions. This effectively reduces mechanical wear and decreases the failure rate and maintenance requirements.

[0007] The objective of this invention is achieved through the following technical solution: A yarn splicing device includes a drive mechanism, a cam mechanism, scissors, a yarn clamping rod, a yarn pressing rod, a yarn pulling rod, and a splicer frame. The drive mechanism comprises a motor I, a motor II, and a transmission mechanism thereof. Motor I and motor II are respectively disposed on opposite sides of the splicer frame. Motor I independently drives the scissors and the yarn clamping rod to perform yarn clamping and cutting actions via the transmission mechanism and the cam mechanism. Motor II independently drives the yarn pressing rod and the yarn pulling rod to perform yarn pressing and pulling actions via the transmission mechanism.

[0008] Improvements to the above technical solution: The timing actions of motor I and motor II are controlled by the same controller. The yarn pressing rod and the yarn pulling rod are sequentially arranged on the drive shaft of motor II. A magnet base is installed at the tail end of motor II. The corresponding drive and magnetic braiding plate are fixedly installed at the splicer frame position at the tail end of motor II. The drive and magnetic braiding plate are connected to the controller through a signal line to detect the rotation angle of the drive shaft of motor II and accurately control the yarn pressing and pulling actions to achieve closed-loop control.

[0009] Further improvements to the above technical solution: The drive mechanism of the motor I includes a transmission belt and a pulley; the cam mechanism includes a camshaft and a cam I; the transmission belt connects the transmission wheel on the transmission shaft of the motor I and the pulley respectively; the cam is mounted on one end of the camshaft and the pulley is mounted on the other end; a U-shaped lever plate is rotatably mounted on the splicer frame; a rotating wheel is mounted on one end of the U-shaped lever plate and presses against the outer circumferential cam surface of the cam I; the other end of the U-shaped lever plate is hinged to one end of a Z-shaped connecting rod; the other end of the Z-shaped connecting rod is hinged to the rear end of the scissors; one end of the yarn clamping rod is hinged to the splicer frame; and the other end of the yarn clamping rod is hinged to the middle of the Z-shaped connecting rod.

[0010] Further improvement to the above technical solution: The U-shaped lever plate is mounted on the splicer frame via a rotating shaft, and a torsion spring is mounted on the rotating shaft to generate elastic rotational torque on the U-shaped lever plate, and the rotating wheel is pressed against the outer circumferential cam surface of the cam I.

[0011] A yarn winding device includes a single spindle, the single spindle including a single spindle controller, characterized in that the above-mentioned motor-driven splicing device is provided on the yarn path of the wound yarn on the single spindle, and the single spindle controller serves as the controller in the motor-driven splicing device.

[0012] Further improvement to the above technical solution: An electronic yarn clearer is installed on the single spindle above the twisting device driven by the motor on the yarn path of the wound yarn, and the single spindle controller supports the linkage of the defect data of the twisting device driven by the motor and the electronic yarn clearer to optimize parameters.

[0013] A control method for a yarn winding device as described in claim 6 or 7, characterized in that the control method includes the following steps: Step 1: Initial standby state: The yarn pressing rod is in the raised waiting position, the scissors are in the open state, the yarn clamping rod is in the released state, and the yarn pulling rod is in the initial zero position, waiting for the splicing command; Step 2: Yarn pressing and positioning action: After receiving the splicing signal, motor II drives the yarn pressing rod and yarn pulling rod to press down the yarn according to the preset timing, sending the two yarns into the scissors and yarn clamping positions, pressing down the two yarns, and completing the yarn positioning; Step 3: Yarn clamping and cutting: When motor II moves to the set position, the single spindle control receives feedback from the drive and magnetic braiding plate, and sends a running signal to motor I, which drives cam I to rotate. Through the U-shaped lever plate and Z-shaped connecting rod, the yarn clamping rod and the scissors move to clamp the ends of the upper and lower yarns to be joined and complete the yarn cutting. Step 4: Yarn untwisting: The untwisting solenoid valve is activated, and the yarn tail end is untwisted; Step 5: Yarn stacking: Motor II drives the yarn pulling rod to swing at a set angle, pushing the two yarn ends into the splicing chamber to arrange them, completing the preparation for yarn end stacking; the stacking length is precisely controlled by the rotation angle of Motor II; Step 6: Yarn Twisting and Twisting Stopper: While the yarn pressure bar is pressing down on the yarn, the twisting solenoid valve is activated, and the yarn end is twisted. The pressure bar is adjusted mechanically to stop twisting at both ends of the yarn, inhibiting the twist from spreading further along the yarn and ensuring uniform twist at the splice. Step 7: Release the zero position: After the pneumatic splicing is completed in the splicing chamber, motor II drives the yarn pressing rod to return and lift, and motor I drives the yarn clamping rod to release, completing one complete splicing cycle, and each mechanism returns to the standby position.

[0014] Throughout the cycle, the single-spindle control panel coordinates the timing of the actions of motor I and motor II to ensure that the actions of shearing, clamping, pressing, and pulling yarn are precisely coordinated according to the set sequence and time intervals.

[0015] Further improvements to the above technical solution: The control method also includes electronic yarn clearing data linkage: The single-spindle controller receives the defect data and yarn count information from the electronic yarn clearer, automatically calls the corresponding process parameter package, and adjusts the untwisting time, yarn stacking length, twisting time, untwisting and twisting air pressure and timing in real time to achieve adaptive splicing control for different yarn varieties.

[0016] Further improvements to the above technical solution: The control method also includes the following fault monitoring and alarm protection methods: Relying on the magnet base assembly, drive, and magnetic braiding plate at the tail of motor II, the single-spindle controller collects the rotation angle, running speed, and position status of the motor II drive shaft in real time, realizing closed-loop monitoring of the entire process. Splicing operation timeout alarm: When the single-step action or the whole cycle operation time exceeds the set threshold, the timeout alarm is triggered and the machine stops; Incomplete Action Alarm: When the deviation between the target position of motor II and the actual feedback position exceeds the limit, a position deviation alarm is triggered; Jamming fault alarm: When the output torque of motor II is abnormal and the rotation angle stops, it is determined to be mechanical jamming, triggering an alarm and cutting off the power output; the alarm information is uploaded to the single spindle controller and the whole machine central control system, which facilitates quick location of the fault point and reduces maintenance and troubleshooting time.

[0017] Compared with the prior art, the present invention has the following advantages and positive effects: This invention addresses the shortcomings of existing cam-linked splicer structures by employing a dual-motor electronic control structure and precise encoder operation. This allows for independent control of yarn pressing, pulling, shearing, and clamping actions, ensuring both precision and adjustability. The resulting advantages and effects are as follows: 1. Reduce wear sources and improve long-term equipment stability. By changing the yarn pressing and pulling actions from cam-linkage driven to direct motor drive, one set of cams and corresponding swing arms, connecting rods, and other high-pair transmission components are reduced, thus decreasing the number of mechanical wear points. The remaining cam set is only responsible for the shearing and yarn clamping actions, reducing load and motion complexity, and slowing down the wear rate. The overall machine precision decay rate is slowed down, and the long-term stability of joint quality is significantly improved.

[0018] 2. Key actions are independently adjustable, enhancing adaptability to various yarn types. The yarn pressing and pulling actions are independently driven by a second motor, and their action position, speed, and timing can be adjusted individually, no longer limited by the fixed profile of the cam. Combined with the timing fine-tuning of the scissor and yarn clamping actions, splicing parameters can be flexibly configured for different yarn counts and varieties, significantly improving the equipment's adaptability to multi-variety production.

[0019] 3. Precise and controllable yarn overlap length improves splicing consistency and first-time splicing success rate. The yarn pulling rod adopts a direct-drive motor, and the yarn untwisting overlap length is precisely controlled by the motor rotation angle, eliminating the influence of cam linkage mechanism clearance and cumulative error on the overlap length. This improves the consistency of yarn end overlap length, reduces splicing quality dispersion, and enhances the overall success rate and stability of the joint.

[0020] 4. Simplified mechanical structure reduces maintenance workload and failure risk. By eliminating the cam disc, multiple sets of swing arms, and connecting rods in the yarn pressing and pulling paths, the number of moving parts and components in the whole machine is reduced, making assembly and maintenance easier; the number of exposed transmission components is reduced, and the risk of yarn entanglement and jamming is correspondingly reduced, resulting in a simultaneous decrease in daily maintenance workload and failure rate.

[0021] 5. The installation interface is compatible, facilitating the modification and upgrading of existing equipment. The overall mechanism retains the original splicer's installation dimensions and external interface, and can directly replace the existing single-cam driven splicer mechanism without modifying the single-spindle installation position of the automatic winding machine. This facilitates the upgrading and modification of production equipment, with low modification costs and strong implementability. Attached Figure Description

[0022] Figure 1 A perspective view of one side of a motor-driven splicing device according to the present invention; Figure 2 A perspective view of the other side of a motor-driven splicing device according to the present invention; Figure 3 This is a transmission diagram illustrating the top shearing action and yarn clamping action of a motor-driven splicing device according to the present invention. Figure 4 This is a schematic diagram illustrating the bottom shearing action and yarn clamping action transmission of a motor-driven splicing device according to the present invention. Figure 5 This is a schematic diagram of the transmission of the yarn pressing and pulling actions of a motor-driven splicing device according to the present invention. Figure 6 This is a schematic diagram of the yarn path structure of a yarn winding device according to the present invention; Figure 7 This is a schematic diagram of the top surface of an existing single-motor driven splicing device; Figure 8 This is a schematic diagram of the bottom surface of an existing single-motor driven splicing device.

[0023] In the diagram, 1. Motor I; 2. Drive belt; 3. Pulley; 4. Camshaft; 5. Motor II; 6. Magnet base assembly; 7. Drive and magnetic braiding plate; 8. U-shaped lever plate; 9. Z-shaped connecting rod; 10. Scissors; 11. Yarn clamping rod; 12. Cam I; 13. Yarn pressing rod; 14. Yarn pulling rod; 15. Cam II; 16. Lever plate assembly; 17. Connecting rod; 18. Frame; 19. Electronic yarn clearer; 20. Yarn cone; 21. Yarn tube; 22. Single spindle. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: See Figures 1-5 An embodiment of the yarn splicing device of the present invention includes a drive mechanism, a cam mechanism, scissors 10, a yarn clamping rod 11, a yarn pressing rod 13, a yarn pulling rod 14, and a splicer frame 18. The drive mechanism includes motor I1, motor II5, and their transmission mechanism. Motor I1 and motor II5 are respectively arranged on both sides of the splicer frame 18. Motor I1 independently drives scissors 10 and yarn clamping rod 11 to complete yarn clamping and cutting actions through the transmission mechanism and the cam mechanism. Motor II5 independently drives yarn pressing rod 13 and yarn pulling rod 14 to complete yarn pressing and pulling actions through the transmission mechanism.

[0025] Furthermore, the timing actions of motors I 1 and II 5 are controlled by the same controller. A yarn pressing rod 13 and a yarn pulling rod 14 are sequentially installed on the drive shaft of motor II 5. A magnet base connector 6 is installed at the tail end of motor II 1. The corresponding drive and magnetic braiding plate 7 are fixedly installed at the splicer frame 18 at the tail end of motor II. The drive and magnetic braiding plate 7 are connected to the controller through a signal line to detect the rotation angle of the drive shaft of motor II 5 and precisely control the yarn pressing and pulling actions to achieve closed-loop control.

[0026] Furthermore, the drive mechanism of the aforementioned motor I 1 includes a transmission belt 2 and a pulley 3. The cam mechanism includes a camshaft 4 and a cam I 12. The transmission belt 2 connects the transmission wheel and the pulley 3 on the transmission shaft of the motor I 1. The cam I 12 is mounted on one end of the camshaft 4, and the pulley 3 is mounted on the other end. A U-shaped lever plate 8 is rotatably mounted on the splicer frame 18. A rotating wheel is mounted on one end of the U-shaped lever plate 8, and the rotating wheel presses against the outer circumferential cam surface of the cam I 12. The other end of the U-shaped lever plate 8 is hinged to one end of a Z-shaped connecting rod 9. The other end of the Z-shaped connecting rod 9 is hinged to the rear end of the scissors 10. One end of the yarn clamping rod 11 is hinged to the splicer frame 18, and the other end of the yarn clamping rod 11 is hinged to the middle of the Z-shaped connecting rod 9. This section can be achieved using existing technology.

[0027] Furthermore, the aforementioned U-shaped lever plate 8 is mounted on the splicer frame 18 via a rotating shaft, and a torsion spring is mounted on the rotating shaft to generate elastic rotational torque on the U-shaped lever plate 8, with the rotating wheel pressing against the outer circumferential cam surface of the cam I 12. This section can be achieved using existing technology.

[0028] Figure 7 and Figure 8 The existing single-motor driven splicing device has only one motor drive. The drive mechanism of motor I 1 includes a transmission belt 2 and a pulley 3. The cam mechanism includes a camshaft 4 and a cam I 12, as shown below. Figure 7 As shown, the present invention basically retains this part of the structure.

[0029] The innovation of this invention is that the pressing rod 13 and the pulling rod 14 are directly driven and controlled by the newly added motor II 5, eliminating the existing cam linkage mechanism for driving the pressing rod 13 and the pulling rod 14, such as... Figure 7 As shown, the cam II15, lever plate assembly 16 and connecting rod 17 used in the prior art are removed, which is the key improvement of the present invention. The remaining parts can adopt the prior art.

[0030] To overcome the shortcomings of existing splicers that use a single drive shaft in conjunction with multiple cam discs and multiple swing arm linkages for linkage control, this invention employs two independent motor drive mechanisms to achieve separate and independent control of yarn pressing, yarn pulling, shearing, and yarn clamping actions, thereby ensuring precise and adjustable actions, effectively reducing mechanical wear and maintenance requirements.

[0031] See Figures 1-6 An embodiment of the yarn winding device of the present invention includes a single spindle 22, the single spindle 22 including a single spindle controller, and the above-mentioned motor-driven splicing device is provided on the yarn path of the winding yarn on the single spindle, the single spindle controller serving as the controller in the motor-driven splicing device.

[0032] An electronic yarn clearer 19 is installed on the single spindle 22 above the twisting device driven by the motor on the yarn path of the wound yarn. The single spindle controller supports the linkage of defect data between the twisting device driven by the motor and the electronic yarn clearer 19 to optimize parameters. Figure 6 It also includes yarn cone 20 and yarn tube 21.

[0033] Specifically: the drive branch of motor I 1 (large motor) (scissors 10 and yarn clamping drive): Motor I 1 is fixedly mounted on one side of the splicer frame 18. Its drive shaft is connected to pulley 3 via drive belt 2. Pulley 3 is coaxially mounted on one end of camshaft 4. Camshaft 4 is supported on splicer frame 18 by bearings, and cam I 12 is fixedly mounted on camshaft 4.

[0034] The outer cam surface of cam I 12 contacts and engages with the rotating wheel on the driven end of the U-shaped lever plate 8. The output end of the U-shaped lever plate 8 is connected to the drive end of the scissors 10 and the drive end of the yarn clamping rod 11 via the Z-shaped connecting rod 9.

[0035] During operation, the motor I1 (small motor) outputs rotational motion, which drives the camshaft 4 and cam I12 to rotate synchronously after passing through the transmission belt 2 and pulley 3. During the rotation of cam I12, it pushes the U-shaped lever plate 8 to swing around the hinge point, and then drives the scissors 10 to complete the opening and closing cutting action and the yarn clamping rod 11 to complete the clamping and releasing action through the Z-shaped connecting rod 9.

[0036] Specifically: Motor II 5 drive branch (direct drive for yarn pressing and yarn pulling): Motor II 5 is fixedly mounted on one end of the splicer frame 18. The drive shaft of motor II 5 is directly connected to the drive end of the yarn pressing rod 13 and the yarn pulling rod 14, using a short-distance direct drive method.

[0037] A magnet base assembly 6 is installed at the tail end of motor II 5, along with a drive and magnetic braiding plate 7. The drive and magnetic braiding plate 7 are fixedly mounted at position 18 of the splicer frame at the tail end of motor II 5. The magnet base assembly 6 rotates synchronously with the drive shaft of motor II 5. The magnetic encoder sensor on the drive and magnetic braiding plate 7 detects the rotational position of the magnet base assembly 6 in real time, forming a closed-loop position feedback.

[0038] Both the yarn pressing rod 13 and the yarn pulling rod 14 are hinged to the splicer frame 18, and their movements correspond to the yarn pressing and yarn pulling actions of the splicing operation, respectively. When the drive shaft of motor II 5 rotates, it directly drives the yarn pressing rod 13 to complete the downward pressing to stop twisting and the return lifting action, while simultaneously driving the yarn pulling rod 14 to complete the yarn end feeding, controlling the yarn overlap length and return action.

[0039] The drive and magnetic braiding plate 7 are connected to the single-spindle controller, and motor I 1 is also connected to the single-spindle controller. The single-spindle controller is the control core of the splicer, sending motion commands to motor I 1 and motor II 5 respectively, and collecting real-time rotation angle data of motor II 5 through the drive and magnetic braiding plate 7 to realize the timing coordinated control and position closed-loop control of the two motors.

[0040] The single-spindle controller is also connected to the electronic yarn clearer of the winding machine, which can obtain electronic yarn clearing and cutting data and yarn parameter information for automatic matching and optimization of splicing process parameters.

[0041] See Figures 1-6 An embodiment of the control method for the above-mentioned yarn winding device of the present invention includes the following steps: Step 1: Initial standby state: The yarn pressing rod 13 is in the raised waiting position, the scissors 10 is in the open state, the yarn clamping rod 11 is in the released state, and the yarn pulling rod 14 is in the initial zero position, waiting for the splicing command.

[0042] Step 2: Yarn pressing and positioning action: After receiving the splicing signal, motor II 5 drives the yarn pressing rod 13 and the yarn pulling rod 14 to press down the yarn according to the preset timing, sending the two yarns into the scissors and yarn clamping positions, pressing down the two yarns, and completing the yarn positioning.

[0043] Step 3: Yarn clamping and cutting: When motor II 5 moves to the set position, the single spindle control receives feedback from the drive and magnetic braiding plate 7 and sends a running signal to motor I 1, which drives cam I 12 to rotate. Through the U-shaped lever plate 8 and Z-shaped connecting rod 9, the yarn clamping rod 11 and scissors 10 are driven to move, clamping the ends of the two yarns to be joined and completing the yarn cutting.

[0044] Step 4: Yarn untwisting: The untwisting solenoid valve is activated, and the yarn tail end is untwisted.

[0045] Step 5: Yarn stacking: Motor II 5 drives the yarn pulling rod 14 to swing at a set angle, pushing the two yarn ends into the splicing chamber to complete the yarn end stacking preparation; the stacking length is precisely controlled by the rotation angle of motor II 5.

[0046] Step 6: Yarn Twisting and Twisting Stopped by Pressure Rod 13: While the pressure rod 13 keeps pressing down on the yarn, the twisting solenoid valve is activated, and the yarn tail end is twisted. The pressure of the pressure rod 13 is adjusted mechanically to stop the twist at both ends of the yarn, inhibiting the twist from spreading further along the yarn and ensuring uniform twist at the twist joint.

[0047] Step 7: Release the zero position: After the pneumatic splicing is completed in the splicing chamber, motor II 5 drives the yarn pressing rod 13 to return and lift, and motor I 1 drives the yarn clamping rod 11 to release, completing one complete splicing cycle, and each mechanism returns to the standby position.

[0048] Throughout the cycle, the single-spindle control panel coordinates the timing of the actions of motor I1 and motor II5 to ensure that the actions of shearing, clamping, pressing, and pulling yarn are precisely coordinated according to the set sequence and time intervals.

[0049] Furthermore, the control and adjustment methods of the above control methods include: Electronic yarn clearing data linkage: The single-spindle controller receives the cutting data and yarn count information from the electronic yarn clearer, automatically calls the corresponding process parameter package, and adjusts the untwisting time, yarn stacking length, twisting time, untwisting and twisting air pressure and timing in real time to achieve adaptive splicing control position parameter adjustment for different yarn varieties: The zero position angle, waiting position angle, and pressing working position angle of the yarn pressing rod 13, as well as the working swing angle of the yarn pulling rod 14, can be set separately through the single-spindle control panel. All position parameters are guaranteed to be accurate by magnetic coding closed loop.

[0050] Position parameter adjustment: The zero position angle, waiting position angle, and pressing working position angle of the yarn pressing rod 13, as well as the working swing angle of the yarn pulling rod 14, can be set separately through the single spindle control panel. The accuracy of all position parameters is guaranteed by magnetic coding closed loop.

[0051] Timing parameter fine-tuning: The timing of shear cutting, the timing of clamping the yarn clamping rod, the duration of clamping, the timing of releasing, as well as the timing of pressing down the yarn and pulling the yarn can all be finely adjusted independently to adapt to the splicing process requirements of different yarns.

[0052] Furthermore, the above control method also includes the following fault monitoring and alarm protection methods: Relying on the magnet mount assembly, drive, and magnetic braiding plate at the tail of motor II 5, the single-spindle controller collects the rotation angle, running speed, and position status of the motor II drive shaft in real time, realizing closed-loop monitoring of the entire process: Splicing operation timeout alarm: When the single-step action or the entire cycle operation time exceeds the set threshold, a timeout alarm is triggered and the machine stops; Incomplete Action Alarm: When the deviation between the target position and the actual feedback position of motor II 5 exceeds the limit, a position deviation alarm is triggered; Jamming fault alarm: When the output torque of motor II 5 is abnormal and the rotation angle stops, it is determined to be mechanical jamming, triggering an alarm and cutting off the power output; the alarm information is uploaded to the single spindle controller and the whole machine central control system, which facilitates quick location of the fault point and reduces maintenance and troubleshooting time.

[0053] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A yarn splicing device, comprising a drive mechanism, a cam mechanism, scissors, a yarn clamping rod, a yarn pressing rod, a yarn pulling rod, and a splicer frame, characterized in that, The driving mechanism includes motor I, motor II and their transmission mechanism. Motor I and motor II are respectively arranged on both sides of the splicer frame. Motor I independently drives the scissors and the yarn clamping rod to complete the yarn clamping and cutting actions through the transmission mechanism and cam mechanism. Motor II independently drives the yarn pressing rod and the yarn pulling rod to complete the yarn pressing and pulling actions through the transmission mechanism.

2. The yarn splicing device according to claim 1, characterized in that, The timing actions of motors I and II are controlled by the same controller. The yarn pressing rod and the yarn pulling rod are sequentially arranged on the drive shaft of motor II. A magnet base is installed at the tail end of motor II. The corresponding drive and magnetic braiding plate are fixedly installed at the splicer frame position at the tail end of motor II. The drive and magnetic braiding plate are connected to the controller through a signal line to detect the rotation angle of the drive shaft of motor II and to precisely control the yarn pressing and pulling actions to achieve closed-loop control.

3. The yarn splicing device according to claim 1 or 2, characterized in that, The drive mechanism of the motor I includes a transmission belt and a pulley. The cam mechanism includes a camshaft and a cam I. The transmission belt connects the transmission wheel on the transmission shaft of the motor I and the pulley. The cam is mounted on one end of the camshaft and the pulley is mounted on the other end. A U-shaped lever plate is rotatably mounted on the splicer frame. A rotating wheel is mounted on one end of the U-shaped lever plate and presses against the outer circumferential cam surface of the cam I. The other end of the U-shaped lever plate is hinged to one end of a Z-shaped connecting rod. The other end of the Z-shaped connecting rod is hinged to the rear end of the scissors. One end of the yarn clamping rod is hinged to the splicer frame, and the other end of the yarn clamping rod is hinged to the middle of the Z-shaped connecting rod.

4. The yarn splicing device according to claim 3, characterized in that, The U-shaped lever plate is mounted on the splicer frame via a rotating shaft. A torsion spring is mounted on the rotating shaft to generate elastic rotational torque on the U-shaped lever plate. The rotating wheel presses against the outer circumferential cam surface of the cam I.

5. The yarn splicing device according to claim 3, characterized in that, The U-shaped lever plate is mounted on the splicer frame via a rotating shaft. A torsion spring is mounted on the rotating shaft to generate an elastic rotational torque on the U-shaped lever plate. The rotating wheel presses against the outer circumferential cam surface of the cam I.

6. A yarn winding device, comprising a single spindle, the single spindle including a single spindle controller, characterized in that, The single spindle is provided with a yarn splicing device as described in any one of claims 1-5 on the yarn path of the wound yarn, and the single spindle controller serves as the controller in the yarn splicing device.

7. The yarn winding device according to claim 6, characterized in that, An electronic yarn clearer is installed on the single spindle above the yarn splicing device on the yarn path of the wound yarn. The single spindle controller supports the linkage of the yarn splicing device and the electronic yarn clearer's defect data to optimize parameters.

8. A control method for the yarn winding device as described in claim 6 or 7, characterized in that, The control method includes the following steps: Step 1: Initial standby state: The yarn pressing rod is in the raised waiting position, the scissors are in the open state, the yarn clamping rod is in the released state, and the yarn pulling rod is in the initial zero position, waiting for the splicing command; Step 2: Yarn pressing and positioning action: After receiving the splicing signal, motor II drives the yarn pressing rod and yarn pulling rod to press down the yarn according to the preset timing, sending the two yarns into the scissors and yarn clamping positions, pressing down the two yarns, and completing the yarn positioning; Step 3: Yarn clamping and cutting: When motor II moves to the set position, the single spindle control receives feedback from the drive and magnetic braiding plate, and sends a running signal to motor I, which drives cam I to rotate. Through the U-shaped lever plate and Z-shaped connecting rod, the yarn clamping rod and the scissors move to clamp the ends of the upper and lower yarns to be joined and complete the yarn cutting. Step 4: Yarn untwisting: The untwisting solenoid valve is activated, and the yarn tail end is untwisted; Step 5: Yarn stacking: Motor II drives the yarn pulling rod to swing at a set angle, pushing the two yarn ends into the splicing chamber to arrange them, completing the preparation for yarn end stacking; the stacking length is precisely controlled by the rotation angle of Motor II; Step 6: Yarn Twisting and Twisting Stopper: While the yarn pressure bar is pressing down on the yarn, the twisting solenoid valve is activated, and the yarn end is twisted. The pressure bar is adjusted mechanically to stop twisting at both ends of the yarn, inhibiting the twist from spreading further along the yarn and ensuring uniform twist at the splice. Step 7: Release the zero position: After the pneumatic splicing is completed in the splicing chamber, motor II drives the yarn pressing rod to return and lift, and motor I drives the yarn clamping rod to release, completing one complete splicing cycle, and each mechanism returns to the standby position.

9. The control method for the yarn winding device according to claim 8, characterized in that, The control method also includes electronic yarn clearing data linkage: the single-spindle controller receives the cutting data and yarn count information of the electronic yarn clearer, automatically calls the corresponding process parameter package, and adjusts the untwisting time, yarn stacking length, twisting time, untwisting and twisting air pressure and timing in real time to achieve adaptive splicing control for different yarn varieties.

10. The control method for the yarn winding device according to claim 8 or 9, characterized in that, The control method also includes the following fault monitoring and alarm protection methods: Relying on the magnet base assembly, drive, and magnetic braiding plate at the tail of motor II, the single-spindle controller collects the rotation angle, running speed, and position status of the motor II drive shaft in real time, realizing closed-loop monitoring of the entire process. Splicing operation timeout alarm: When the single-step action or the whole cycle operation time exceeds the set threshold, the timeout alarm is triggered and the machine stops; Incomplete Action Alarm: When the deviation between the target position of motor II and the actual feedback position exceeds the limit, a position deviation alarm is triggered; Jamming fault alarm: When the output torque of motor II is abnormal and the rotation angle stops, it is determined to be mechanical jamming, triggering an alarm and cutting off the power output; the alarm information is uploaded to the single spindle controller and the whole machine central control system, which facilitates quick location of the fault point and reduces maintenance and troubleshooting time.

Images