A locking structure for the thread take-up lever of a computerized embroidery machine

Abstract

This invention relates to the field of computerized embroidery machine technology, specifically a thread take-up lever locking structure for a computerized embroidery machine. The structure includes a rotation control structure, a limit locking structure, and a thread take-up control structure. The rotation control structure is installed at the rear end of the limit locking structure, and the thread take-up control structure is adjusted at the front end. The rotation control structure includes a bearing seat, a first half-tooth disc, a mating block, a drive rod, and a control motor. The drive rod is driven by the control motor, and the mating block is connected to the upper limit of the drive rod. The first half-tooth disc is fixedly connected to the mating block. The control motor drives the first half-tooth disc and the mating block to rotate via the drive rod. The side end of the drive rod is connected to the mating block, and the drive rod is rotatably connected to the bearing seat. Through the rotation control structure, the limit locking structure, and the thread take-up control structure, automatic thread take-up is achieved.

Description

Technical Field

[0001] This invention relates to the field of computerized embroidery machine technology, specifically a locking structure for the thread take-up lever of a computerized embroidery machine. Background Technology

[0002] Each needle bar on the needle bar holder of a computerized embroidery machine has a thread take-up lever corresponding to its needle bar. One end of the thread take-up lever is fixedly connected to a power block, and the embroidery thread passes through a thread hole at the other end of the lever. When a needle bar moves under the drive mechanism, the corresponding thread take-up lever also moves up and down along the axial direction of the needle bar under the action of the power block. The movement of the thread take-up lever causes the embroidery thread to move along with it, ensuring that the embroidery thread has a certain tension during the embroidery process and guaranteeing smooth thread sliding. Since there are multiple needle bars on the needle bar holder, all of these needle bars do not move simultaneously, but rather one needle bar moves sequentially.

[0003] As the closest existing technology, Chinese Patent Publication No. CN2730908Y relates to a locking device for a computerized embroidery machine, specifically a locking head assembly thread take-up clutch locking device. It includes a thread take-up gear and a thread take-up lever assembly that mesh with each other via gears. The key feature is that the thread take-up lever assembly is equipped with a sliding shaft, a spring is sleeved on the sliding shaft, and a thread take-up lever fork assembly is fixed to one end of the sliding shaft. The thread take-up lever fork assembly is movably connected to a thread take-up lever fork pin, and a color-changing pull rod is mounted on the thread take-up lever fork pin. This device has the advantages of simple structure and ease of use, enabling computerized embroidery machines combining flat and wrapped embroidery to meet higher technological requirements, while also reducing the operational difficulty for workers and improving production efficiency.

[0004] Currently, the locking structure of the thread take-up lever of computerized embroidery machines and the structure of the aforementioned cases mostly use springs for limit and reset work to achieve the locking purpose. However, in actual use, the locking structure needs to be enhanced to improve stability and prevent accidental loosening. Therefore, an improved device is needed to address the above issues. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides a locking structure for the thread take-up lever of a computerized embroidery machine.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a locking structure for the thread take-up lever of a computer embroidery machine, including a rotation control structure, a limit locking structure and a thread take-up control structure, wherein the rear end of the limit locking structure is fitted with a rotation control structure and the front end of the limit locking structure is fitted with a thread take-up control structure.

[0007] The rotation control structure includes a bearing housing, a first half-toothed disc, a mating block, a drive rod, and a control motor. The control motor is driven by the drive rod, which is connected to the mating block at its upper limit. The first half-toothed disc is fixedly connected to the mating block. The control motor drives the first half-toothed disc and the mating block to rotate via the drive rod. The side end of the drive rod is connected to the mating block, and the drive rod is rotatably connected to the bearing housing. This rotation control structure enables driving operation, thereby rotating the second half-toothed disc within the line-lifting control structure, achieving position control of the line-lifting lever, and assisting in line-lifting operations. The structure is driven by a centrally controlled motor, which rotates the drive rod, causing the first half-tooth disc and the mating seat to rotate, thus achieving the control purpose. The detection sensor in the limit locking structure can detect the position of the label, thereby determining the position of the second half-tooth disc. The limit rod is used for the limit installation of the entire line-lifting control structure. The electromagnet in the limit control component can generate magnetic force when energized, thereby attracting the magnetic block. The magnetic block is connected to the movable guide block, so that the limit locking work in the line-lifting control structure can be performed when not in operation, preventing the line-lifting control structure from moving unexpectedly and causing equipment damage, thus improving the protective performance of the lock.

[0008] The limiting and locking structure includes a supporting arc frame, a detection sensor, a supporting sleeve, a limiting round rod, and a limiting control component. The supporting sleeve is fixedly connected to the center of the front end of the supporting sleeve, and the supporting arc frame is fixedly connected to the upper end of the supporting sleeve. The detection sensor is installed on the side of the supporting arc frame for limiting, and the limiting control component is fixedly connected to the front end of the supporting sleeve.

[0009] Specifically, the limit control component includes a motor, a protrusion, a rotating wheel, a mounting bracket, a first spring, an adapter adjustment bracket, a support crossbeam, a limit plate seat, a magnetic block, and an electromagnet. The motor is limited and installed by the mounting bracket. The lower end of the motor drives the rotating wheel to rotate and adjust, and a protrusion is fixedly connected to the rotating wheel. The side end of the mounting bracket is fixedly connected to the limit plate seat.

[0010] Specifically, an electromagnet is installed at the upper end of the limiting plate base, a magnetic block is slidably connected to the center of the limiting plate base, a support crossbeam is fixedly connected to the bottom of the limiting plate base, and an adapter adjustment frame is elastically slidably connected to the support crossbeam via an installation bracket.

[0011] Specifically, the line-taking control structure includes a line-taking lever, a second spring, a movable guide block, a spline, a third spring, a second half-tooth disc, and a sensor label. The side end of the second spring is elastically connected to a second spring, and a spline is installed on the second spring. The side end of the second spring is elastically torsionally connected to the second half-tooth disc through the third spring, and sensor labels are provided on both sides of the second half-tooth disc.

[0012] Specifically, the line-picking control structure also includes a touch frame, a sliding sleeve frame, and a movable collar seat. The front end of the movable collar seat is fixedly connected to the sliding sleeve frame, and the lower end of the sliding sleeve frame is fixedly connected to the touch frame.

[0013] Specifically, the line-picking control structure also includes a docking bracket, a docking ring block, a rotating rod, and an inner ring sleeve. The docking bracket is fixedly connected to the side end of the docking ring block, and the side end of the docking ring block is rotatably connected to the inner ring sleeve through the rotating rod.

[0014] Specifically, the side end of the inner ring sleeve is fixedly connected to the induction label, and the side end of the sliding sleeve is fixedly connected to the docking bracket. The second spring, movable guide block, second half-tooth disc, movable collar seat, docking bracket, docking ring sleeve block, and inner ring sleeve are all sleeved with the limiting round rod. The support sleeve is limited and fixed to one side of the second spring. The spline can control the movable guide block to slide on the limiting round rod. The limiting round rod is provided with a matching groove at the spline connection position. Through the structural setting of the line-picking control structure, it is convenient to carry out specific line-picking work. The motor can control the rotation of the protrusion and the rotating wheel. When the contact frame is pressed, the sliding sleeve, moving collar seat, docking bracket, docking ring block, rotating rod, inner ring sleeve, second half-tooth disc, sensing label, third spring, movable guide block, and spline as a whole slide on the limiting round rod, so that the second half-tooth disc can be docked with the first half-tooth disc. Only then can the line picking operation be performed by driving. At the same time, the second half-tooth disc and sensing label can rotate around the limiting round rod. At this time, the third spring cooperates to absorb the rotational stress. After the work is completed, the third spring can control the second half-tooth disc and sensing label to reset, which facilitates continuous line picking operation.

[0015] Specifically, the second half-tooth disc is meshed with the first half-tooth disc, the control motor and bearing housing are both limited and installed at the rear end of the support frame, the detection sensor can sense the label, and the second half-tooth disc can be adjusted relative to the spline by the third spring.

[0016] Specifically, the motor drives the protrusion to rotate through the rotating wheel, and the protrusion contacts the contact frame, which can push the sliding sleeve and the movable collar seat to move appropriately on the limiting round rod. After reaching the specified range, the protrusion can disengage from the contact frame. The adapter adjustment frame, the magnetic block and the front end of the rotating wheel are fixedly connected, and the line take-up rod is fixed on the second half-tooth plate.

[0017] Specifically, a control connector is fixedly installed at the front end of the mounting bracket, and the control connector is capable of centralized electrical control of the detection sensor, control motor, motor, and electromagnet.

[0018] The beneficial effects of this invention are:

[0019] First, this invention, through the setting of a rotation control structure, enables driving operation, thereby driving the second half-tooth disc within the line-lifting control structure to rotate, achieving position control of the line-lifting lever and assisting in line-lifting operations. The rotation control structure, through a centralized drive motor, can drive the drive rod to rotate, causing the first half-tooth disc and the mating seat block to rotate, achieving the control purpose. The detection sensor within the limit locking structure can detect the label position, thereby determining the location of the second half-tooth disc. The limit rod is used for the overall limit installation of the line-lifting control structure. The electromagnet within the limit control component, when energized, can generate magnetic force, thereby attracting the magnetic block. The magnetic block connects to the movable guide block, thus enabling limit locking within the line-lifting control structure when not in operation, preventing accidental movement of the line-lifting control structure and causing equipment damage, and improving the locking protection performance.

[0020] Second, the present invention facilitates specific line-picking operations through the structural design of the line-picking control structure. The motor controls the rotation of the protrusion and rotating wheel. The protrusion contacts the contact frame and presses, causing the sliding sleeve, moving collar seat, docking bracket, docking ring sleeve block, rotating rod, inner ring sleeve, second half-tooth disc, sensing label, third spring, movable guide block, and spline to slide on the limiting round rod. This allows the second half-tooth disc to dock with the first half-tooth disc, enabling the line-picking operation through drive. Simultaneously, the second half-tooth disc and sensing label can rotate around the limiting round rod. At this time, the third spring cooperates to absorb the rotational stress. After the work is completed, the third spring can control the second half-tooth disc and sensing label to reset, facilitating continuous line-picking operations. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0023] Figure 2 This is a side view three-dimensional structural diagram of the main body in this invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the main body from the rear view in this invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the rotation control structure from a frontal perspective in this invention;

[0026] Figure 5 This is a frontal perspective three-dimensional structural diagram of the limiting and locking structure in this invention;

[0027] Figure 6 This is an exploded view of the limiting and locking structure in this invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the limiting control component from the front view in this invention;

[0029] Figure 8 This is a frontal perspective three-dimensional structural diagram of the line-picking control structure in this invention;

[0030] Figure 9 This is an exploded view of the thread-picking control structure in this invention;

[0031] Figure 10 In this invention Figure 9 Enlarged view of point A;

[0032] Figure 11 This is a frontal perspective three-dimensional structural diagram of the second embodiment of the main body of the present invention.

[0033] In the diagram: 1-Rotation control structure, 2-Limit locking structure, 3-Line picking control structure, 4-Bearing seat, 5-First half-tooth disc, 6-Matching seat block, 7-Drive rod, 8-Control motor, 9-Support arc frame, 10-Detection sensor, 11-Support sleeve, 12-Limit round rod, 13-Limit control component, 14-Motor, 15-Protrusion, 16-Rotating wheel, 17-Mounting bracket, 18-First spring, 19-Adaptive adjustment Frame, 20-Supporting crossbeam, 21-Limiting plate seat, 22-Magnetic block, 23-Electromagnet, 24-Thread take-up rod, 25-Second spring, 26-Modible guide block, 27-Spline, 28-Third spring, 29-Second half-tooth disc, 30-Induction label, 31-Touch frame, 32-Sliding sleeve frame, 33-Modible collar seat, 34-Dating bracket, 35-Dating ring sleeve block, 36-Rotating rod, 37-Inner ring sleeve, 38-Control docking device. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] The invention will be further described below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1-10 As shown, a locking structure for the thread take-up lever of a computer embroidery machine according to the present invention includes a rotation control structure 1, a limit locking structure 2 and a thread take-up control structure 3. The rotation control structure 1 is installed at the rear end of the limit locking structure 2, and the thread take-up control structure 3 is provided at the front end of the limit locking structure 2.

[0039] like Figure 4 As shown, the rotation control structure 1 includes a bearing housing 4, a first half-tooth disk 5, a mating block 6, a drive rod 7, and a control motor 8. The control motor 8 is driven by the drive rod 7, and the upper limit of the drive rod 7 is connected to the mating block 6. The first half-tooth disk 5 is fixedly connected to the mating block 6. The control motor 8 drives the first half-tooth disk 5 and the mating block 6 to rotate through the drive rod 7. The side end of the drive rod 7 is connected to the mating block 6, and the drive rod 7 is rotatably connected to the bearing housing 4. The control motor 8 is controlled by the circuit to drive the drive rod 7 to rotate, so that the first half-tooth disk 5 and the mating block 6 fixed on the drive rod 7 rotate. When the first half-tooth disk 5 rotates, it can drive the meshing second half-tooth disk 29 to rotate as well.

[0040] like Figure 5 As shown, the limiting locking structure 2 includes a support arc frame 9, a detection sensor 10, a support sleeve 11, a limiting round rod 12, and a limiting control component 13. The support sleeve 11 is fixedly connected to the center of its front end, and the support arc frame 9 is fixedly connected to the upper end of the support sleeve 11. The detection sensor 10 is installed on the side of the support arc frame 9 for limiting, and the limiting control component 13 is fixedly connected to the front end of the support sleeve 11.

[0041] like Figure 6As shown, the limit control component 13 includes a motor 14, a protrusion 15, a rotating wheel 16, a mounting bracket 17, a first spring 18, an adapter adjustment bracket 19, a support crossbeam 20, a limit plate seat 21, a magnet 22, and an electromagnet 23. The motor 14 is limited and installed via the mounting bracket 17. The lower end of the motor 14 drives the rotating wheel 16 to rotate and adjust, and the protrusion 15 is fixedly connected to the rotating wheel 16. The side end of the mounting bracket 17 is fixedly connected to the limit plate seat 21. The motor 14 controls the rotation of the protrusion 15 and the rotating wheel 16, and the protrusion 15 can gradually disengage from the contact frame 31. Under the action of the second spring 25, the line is lifted. The control structure 3 is reset as a whole. At the same time, the third spring 28 controls the second half-tooth disk 29 to rotate and reset. Simultaneously, the electromagnet 23 is continuously energized to generate a magnetic field, which attracts the magnetic block 22. The magnetic block 22, the adapter adjustment frame 19 and the movable guide block 26 are connected, so that the movable guide block 26 is reset and magnetically locked. The first spring 18 also helps to perform instantaneous reset. Due to the setting of the spline 27, the movable guide block 26 has a groove on the limiting round rod 12. The groove is adapted to the spline 27 for limiting, so that the movable guide block 26 can only slide on the limiting round rod 12 and cannot rotate.

[0042] like Figure 7 As shown, an electromagnet 23 is installed at the upper end of the limiting plate base 21, a magnetic block 22 is slidably connected to the center of the limiting plate base 21, a support crossbeam 20 is fixedly connected to the bottom of the limiting plate base 21, and an adapter adjustment frame 19 is elastically slidably connected to the support crossbeam 20 through the mounting bracket 17.

[0043] like Figure 8 As shown, the line-picking control structure 3 includes a line-picking rod 24, a second spring 25, a movable guide block 26, a spline 27, a third spring 28, a second half-tooth disc 29, and a sensor label 30. The side end of the second spring 25 is elastically connected to the second spring 25, and the spline 27 is installed on the second spring 25. The side end of the second spring 25 is elastically torsionally connected to the second half-tooth disc 29 through the third spring 28. Sensor labels 30 are provided on both sides of the second half-tooth disc 29. When the second half-tooth disc 29 rotates, it can drive the line-picking rod 24 at the upper end to move. The line-picking rod 24 is connected to the line end to perform the line-picking work. The second half-tooth disc 29 can rotate because of the third spring 28, and the side end of the second half-tooth disc 29 is connected to the docking bracket 34 through the inner ring sleeve 37, the rotating rod 36, and the docking ring sleeve block 35, which ensures the relatively independent rotation of the second half-tooth disc 29 and the sensor label 30.

[0044] like Figure 9 As shown, the line-picking control structure 3 also includes a touch frame 31, a sliding sleeve frame 32, and a movable collar seat 33. The front end of the movable collar seat 33 is fixedly connected to the sliding sleeve frame 32, and the lower end of the sliding sleeve frame 32 is fixedly connected to the touch frame 31.

[0045] like Figure 10As shown, the line-picking control structure 3 also includes a docking bracket 34, a docking ring block 35, a rotating rod 36, and an inner ring 37. The docking bracket 34 is fixedly connected to the side end of the docking ring block 35, and the side end of the docking ring block 35 is rotatably connected to the inner ring 37 through the rotating rod 36.

[0046] The side end of the inner ring sleeve 37 is fixedly connected to the induction label 30, and the side end of the sliding sleeve 32 is fixedly connected to the docking bracket 34. The second spring 25, the movable guide block 26, the second half-tooth disc 29, the movable collar seat 33, the docking bracket 34, the docking ring sleeve block 35, and the inner ring sleeve 37 are all sleeved with the limiting round rod 12. The support sleeve 11 is limited and fixed to one side of the second spring 25. The spline 27 can control the movable guide block 26 to slide on the limiting round rod 12. The limiting round rod 12 is provided with a matching groove at the connection position of the spline 27. When the motor 14 works, it can drive the rotating wheel 16 to rotate. The rotating wheel 16 is fixedly provided with a protrusion 15. When the rotating wheel 16 rotates, it drives the protrusion 15 to move. The protrusion 15 contacts the touch frame 31, which can press the touch frame 31. The pressure causes the touch frame 31 to push the sliding sleeve 32 and the movable collar seat 33 to move. At this time, the movable collar seat 33 moves and adjusts on the limiting round rod 12. It can synchronously drive the sensing label 30, the second half-tooth disk 29, the third spring 28, the spline 27, and the movable guide block 26 to move to the right through the docking bracket 34, the docking ring block 35, the rotating rod 36, and the inner ring sleeve 37. This causes the second half-tooth disk 29 to mesh and dock with the first half-tooth disk 5. At this time, the second spring 25 can be stretched and adjusted. The thread take-up rod 24 also moves synchronously with the second half-tooth disk 29. The adapter adjustment frame 19 and the magnetic block 22 fixed on the movable guide block 26 slide on the limiting plate seat 21. At the same time, the first spring 18 can also be stretched and engaged. At this time, the sensing label 30 moves, and the detection sensor 10 can sense it.

[0047] The second half-tooth disk 29 is meshed with the first half-tooth disk 5. The control motor 8 and bearing seat 4 are both limited and installed at the rear end of the support sleeve 11. The detection sensor 10 can sense the label 30. The second half-tooth disk 29 can rotate relative to the spline 27 through the third spring 28.

[0048] The motor 14 drives the protrusion 15 to rotate via the rotating wheel 16, and the protrusion 15 contacts the contact frame 31, which can push the sliding sleeve 32 and the movable collar seat 33 to move appropriately on the limiting round rod 12. After reaching the specified range, the protrusion 15 can disengage from the contact frame 31. The adapter adjustment frame 19, the magnetic block 22 and the front end of the rotating wheel 16 are fixedly connected, and the line take-up rod 24 is fixed on the second half toothed disc 29.

[0049] The working principle of this embodiment is as follows: In use, the user assembles the rotation control structure 1, the limit locking structure 2, and the line-picking control structure 3 as a whole. When line picking is required, the motor 14 first starts working, which drives the rotating wheel 16 to rotate. A protrusion 15 is fixedly installed on the rotating wheel 16. As the rotating wheel 16 rotates, it drives the protrusion 15 to move. The protrusion 15 contacts the contact frame 31, which can press the contact frame 31, causing the contact frame 31 to push the sliding sleeve 32 and the moving collar seat 33 to move. At this time, the moving collar seat 33 moves and adjusts on the limit rod 12, which can be synchronously controlled by the docking bracket 34, the docking ring block 35, the rotating rod 36, and the inner... The ring 37 drives the induction label 30, the second half-tooth disc 29, the third spring 28, the spline 27, and the movable guide block 26 to move to the right, so that the second half-tooth disc 29 meshes with the first half-tooth disc 5. At this time, the second spring 25 can be stretched and adjusted, and the take-up lever 24 also moves synchronously with the second half-tooth disc 29. The adapter adjustment bracket 19 and the magnetic block 22 fixed on the movable guide block 26 slide on the limit plate seat 21. At the same time, the first spring 18 can also be stretched and engaged. At this time, the induction label 30 moves, and the detection sensor 10 can detect it. At this time, the control motor 8 is immediately driven by the circuit control, driving the drive rod 7 to rotate, so that the first spring 18 fixed on the drive rod 7 rotates. The first half-tooth disc 5 rotates in conjunction with the seat block 6. When the first half-tooth disc 5 rotates, it drives the meshing second half-tooth disc 29 to rotate as well. When the second half-tooth disc 29 rotates, it drives the upper thread-taking rod 24 to move. The thread-taking rod 24 is connected to the thread end for thread taking. The second half-tooth disc 29 can rotate due to the third spring 28, and the side end of the second half-tooth disc 29 is connected to the docking bracket 34 through the inner ring sleeve 37, the rotating rod 36, and the docking ring sleeve block 35, ensuring the relatively independent rotation of the second half-tooth disc 29 and the sensing label 30. Then, the motor 14 continues to control the protrusion 15 and the rotating wheel 16 to rotate. The protrusion 15 gradually disengages from the contact frame 31, and the second spring... Under the action of 25, the entire line-picking control structure 3 is reset. At the same time, the third spring 28 controls the second half-tooth disk 29 to rotate and reset. Simultaneously, the electromagnet 23 is continuously energized to generate a magnetic field, which attracts the magnetic block 22. The magnetic block 22, the adapter adjustment frame 19 and the movable guide block 26 are connected, so that the movable guide block 26 is reset and magnetically locked. The first spring 18 also helps to perform instantaneous reset. Due to the setting of the spline 27, the movable guide block 26 has a groove on the limiting round rod 12. The groove is adapted to the spline 27 for limiting, so that the movable guide block 26 can only slide on the limiting round rod 12 and cannot rotate. In this way, one line-picking operation is completed.

[0050] Example 2

[0051] Based on the embodiments, such as Figure 11As shown, a control connector 38 is fixedly installed at the front end of the mounting bracket 17. The control connector 38 can perform centralized electrical control of the detection sensor 10, the control motor 8, the motor 14, and the electromagnet 23.

[0052] In this embodiment, the user can connect the detection sensor 10, control motor 8, motor 14 and electromagnet 23 by controlling the installation and setting of the connector 38, thereby completing a series of command controls, facilitating programming electrical control work and improving the automated line picking production rate.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking structure for the thread take-up lever of a computerized embroidery machine, characterized in that: It includes a rotation control structure (1), a limit locking structure (2) and a line-picking control structure (3). The rear end of the limit locking structure (2) is equipped with the rotation control structure (1), and the front end of the limit locking structure (2) is equipped with the line-picking control structure (3). The rotation control structure (1) includes a bearing seat (4), a first half-tooth disk (5), a mating block (6), a drive rod (7), and a control motor (8). The control motor (8) is driven by the drive rod (7), and the upper limit of the drive rod (7) is connected to the mating block (6). The first half-tooth disk (5) is fixedly connected to the mating block (6). The control motor (8) drives the first half-tooth disk (5) and the mating block (6) to rotate through the drive rod (7). The side end of the drive rod (7) is connected to the mating block (6), and the drive rod (7) is rotatably connected to the bearing seat (4). The limiting and locking structure (2) includes a support arc frame (9), a detection sensor (10), a support sleeve (11), a limiting round rod (12), and a limiting control component (13). The support sleeve (11) is fixedly connected to the center of the front end of the support sleeve (11), and the support arc frame (9) is fixedly connected to the upper end of the support sleeve (11). The detection sensor (10) is installed on the side of the support arc frame (9), and the limiting control component (13) is fixedly connected to the front end of the support sleeve (11). The limiting control component (13) includes a motor (14), a protrusion (15), a rotating wheel (16), a mounting bracket (17), a first spring (18), an adapter adjustment bracket (19), a support crossbar (20), a limiting plate seat (21), a magnetic block (22), and an electromagnet (23). The motor (14) is limited and installed by the mounting bracket (17). The lower end of the motor (14) drives the rotating wheel (16) to rotate and adjust. The protrusion (15) is fixedly connected to the rotating wheel (16). The side end of the mounting bracket (17) is fixedly connected to the limiting plate seat (21). An electromagnet (23) is installed at the upper end of the limiting plate base (21), a magnetic block (22) is slidably connected to the center of the limiting plate base (21), a support crossbeam (20) is fixedly connected to the bottom of the limiting plate base (21), and an adapter adjustment frame (19) is elastically slidably connected to the support crossbeam (20) through the mounting frame (17). The line-picking control structure (3) includes a line-picking rod (24), a second spring (25), a movable guide block (26), a spline (27), a third spring (28), a second half-tooth disc (29), and a sensor label (30). The second spring (25) is equipped with a spline (27), and the side end of the second spring (25) is elastically torsionally connected to the second half-tooth disc (29) through the third spring (28). Sensor labels (30) are provided on both sides of the second half-tooth disc (29). The line-picking control structure (3) also includes a touch frame (31), a sliding sleeve frame (32) and a movable collar seat (33). The front end of the movable collar seat (33) is fixedly connected to the sliding sleeve frame (32), and the lower end of the sliding sleeve frame (32) is fixedly connected to the touch frame (31). The line-picking control structure (3) further includes a docking bracket (34), a docking ring block (35), a rotating rod (36), and an inner ring sleeve (37). The docking bracket (34) is fixedly connected to the side end of the docking ring block (35), and the side end of the docking ring block (35) is rotatably connected to the inner ring sleeve (37) through the rotating rod (36). The side end of the inner ring sleeve (37) is fixedly connected to the induction label (30), and the side end of the sliding sleeve (32) is fixedly connected to the docking bracket (34). The second spring (25), the movable guide block (26), the second half-tooth disc (29), the movable collar seat (33), the docking bracket (34), the docking ring sleeve block (35), and the inner ring sleeve (37) are all sleeved with the limiting round rod (12). The support sleeve (11) is limited and fixed to one side of the second spring (25). The spline (27) can control the movable guide block (26) to slide on the limiting round rod (12). The limiting round rod (12) is provided with a matching groove at the spline (27) connection position. The second half-tooth disk (29) is meshed with the first half-tooth disk (5). The control motor (8) and bearing seat (4) are both limited and installed at the rear end of the support frame (11). The detection sensor (10) can sense the label (30). The second half-tooth disk (29) can rotate relative to the spline (27) through the third spring (28). The motor (14) drives the protrusion (15) to rotate through the rotating wheel (16), and the protrusion (15) contacts the contact frame (31), which can push the sliding sleeve (32) and the moving collar seat (33) to move appropriately on the limiting round rod (12). After reaching the specified range, the protrusion (15) can disengage from the contact frame (31). The adapter adjustment frame (19), the magnetic block (22) and the front end of the rotating wheel (16) are fixedly connected. The thread take-up rod (24) is fixed on the second half toothed plate (29). The front end of the mounting bracket (17) is fixedly equipped with a control connector (38), which is capable of centralized electrical control of the detection sensor (10), control motor (8), motor (14), and electromagnet (23).

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