Mechanism for preventing both end protrusions of variable pitch reciprocating screw wire arranging and winding

Abstract

This invention relates to the technical field of textile fiber, metal wire, and cable processing. It discloses a mechanism for preventing shoulder protrusion at both ends during winding using a variable pitch reciprocating screw. The mechanism includes a connecting frame and mounting holes. The inner wall of the connecting frame has mounting holes, and the outer wall of the connecting frame is fixedly connected to a reinforcing frame. The outer wall of the connecting frame is threadedly connected to a fixed seat via bolts. A secondary servo motor is mounted on the outer wall of the fixed seat. The variable pitch reciprocating screw prevents shoulder protrusion at both ends during winding. The secondary servo motor drives the reciprocating screw to rotate at a constant speed. A pin drives a slider and a guide wire component to reciprocate laterally. The guide plate's groove, in conjunction with a U-shaped component, guides the slider, preventing deflection. The gradually increasing pitch in the pitch-adjustable zone on both sides of the reciprocating screw causes the slider to automatically accelerate when it reaches both ends of the bobbin, shortening the wire dwell time and reducing wire coil stacking. The internal threaded ring of the winding mechanism locks the winding bobbin, preventing winding movement. The connecting frame and reinforcing frame enhance the overall machine rigidity, resulting in high-quality winding.

Description

Technical Field

[0001] This invention relates to the technical field of textile fiber, metal wire, and cable processing, specifically to a mechanism for preventing shoulder protrusion at both ends when winding a variable pitch reciprocating screw. Background Technology

[0002] In the production of chemical fiber filaments, metal wires, and cables, reciprocating screws (reciprocating lead screws) are widely used to achieve the reciprocating traverse movement of the wire guide, uniformly winding the wire onto a bobbin to form a package. Traditional reciprocating screws use a uniform pitch helical groove throughout the entire screw. Under the condition of constant screw speed, the traverse speed of the wire guide remains consistent throughout the entire process.

[0003] While existing wire winding devices have solved some problems, and while they can complete the reciprocating winding operation, they lack a variable-pitch reciprocating screw structure. This means they cannot mechanically adjust the wire movement speed at both ends of the winding bobbin. When winding reaches the reversing position at both ends of the bobbin, the wire movement speed does not automatically decrease with the reversal. The wire maintains its original speed even when it reaches the edges of the bobbin, causing it to accumulate at the ends and form shoulder defects. This accumulated wire further interferes with the subsequent layer's winding path, resulting in unevenness on the coil end face and potential wire skipping or misalignment. This device relies solely on the control system for simple reversals, lacking mechanical speed compensation. The poor matching of the winding movement rhythm during reversals directly reduces the appearance quality of the wire coil and negatively impacts subsequent wire unwinding. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the existing wire winding device has poor matching of the wire winding motion rhythm during the reversal, which ultimately directly reduces the appearance and forming quality of the wire coil. The invention proposes a mechanism for preventing shoulder protrusion at both ends when winding wire with a variable pitch reciprocating screw.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mechanism for preventing shoulder protrusion at both ends when winding a variable pitch reciprocating screw, comprising a connecting frame and mounting holes, wherein the inner wall of the connecting frame is machined with mounting holes, the outer wall of the connecting frame is fixedly connected to a reinforcing frame, the outer wall of the connecting frame is threadedly connected to a fixed seat by bolts, an auxiliary servo motor is installed on the outer wall of the fixed seat, and a winding mechanism is connected to the inner wall of the reinforcing frame.

[0006] This feature: The connecting frame serves as the basic load-bearing base for the entire wire winding mechanism. Multiple sets of mounting holes are provided on the connecting frame. These mounting holes can be either through holes or countersunk holes, facilitating the use of bolts to position and assemble the entire machine onto the winding equipment frame. The reinforcing frame is made of thick steel plate welded and fixed to the outside of the connecting frame. Triangular reinforcing ribs can also be added between the reinforcing frame and the connecting frame to significantly improve the overall bending and torsional strength of the frame, prevent slight deformation of the frame after long-term operation, and ensure the coaxiality and assembly accuracy of each component.

[0007] Preferably, the winding mechanism includes a main shaft, the outer wall of the main shaft is rotatably connected to the reinforcing frame, the end of the main shaft is fixedly connected to the inner cylinder, the outer wall of the inner cylinder is inserted into the winding cylinder, and the outer wall of the inner cylinder is threadedly connected to an internal threaded ring.

[0008] This setup features a main shaft mounted inside a reinforcing frame with two sets of rolling bearings for rotatable support. This dual-bearing support structure reduces radial runout during high-speed spindle rotation, ensuring winding accuracy. The spindle output torque is transmitted to the inner cylinder, which rotates synchronously with the spindle. The winding drum, or winding tube, is directly fitted onto the outer cylindrical surface of the inner cylinder using a plug-in method, allowing for quick and easy assembly and disassembly. The outer diameter of the inner cylinder is machined with external threads, and an internal threaded ring is screwed in. The end face of the internal threaded ring presses against the end face of the winding drum, achieving axial positioning and locking of the winding drum. This effectively prevents axial movement of the winding drum during high-speed winding operations. Once a batch of winding production is complete, simply unscrew the internal threaded ring to remove the winding drum and the already formed wire roll. No other transmission components need to be disassembled. Replace the empty winding drum to continue production for the next batch, greatly improving drum changing efficiency and adapting to continuous industrial production.

[0009] Preferably, the inner wall of the fixed base is rotatably connected to the connecting shaft, and the inner wall of the connecting frame is connected to an auxiliary mechanism.

[0010] This setup: The fixed base is equipped with a bearing housing, and the connecting shaft relies on the bearing housing for rotational support. The connecting shaft plays the role of intermediate torque transmission, smoothly transmitting the rotational power output by the auxiliary servo motor to the reciprocating screw. The auxiliary mechanism is the core unit of the entire device for wire laying and lateral movement. It fully includes a mounting shell, a variable pitch reciprocating screw, a slider, a wire guide, and guide and limit components, realizing the reciprocating lateral wire laying and guiding work of the wire. Relying on the mechanical characteristics of the variable pitch reciprocating screw, it automatically completes the end speed increase.

[0011] Preferably, the auxiliary mechanism includes a mounting shell, the inner wall of which is threadedly connected to a connecting frame by bolts, the inner wall of which is rotatably connected to a reciprocating screw, the outer wall of which is slidably connected to a slider, the inner wall of which is fixedly connected to a guide wire component by bolts, and a pin is installed on the inner wall of which.

[0012] This configuration: The mounting housing provides rotational support points at both ends of the reciprocating screw. Deep groove ball bearings are fitted at both ends of the mounting housing, allowing the reciprocating screw to rotate stably with low resistance. The mounting housing is bolted to the connecting frame and can be disassembled as a whole for maintenance. The reciprocating screw in this mechanism is a custom-machined variable pitch reciprocating screw. Left-hand and right-hand helical grooves are machined on the screw body, connecting end to end. The left-hand and right-hand helical grooves are smoothly connected at the left and right ends of the screw via a reversing transition groove. The reciprocating screw is axially divided into a middle working section and a left-hand section. The gradual pitch zone and the right gradual pitch zone correspond to the main winding section in the middle of the winding bobbin. The spiral groove uses a constant basic pitch P0. The left and right gradual pitch zones correspond to the reversing areas at the left and right ends of the winding bobbin, respectively. The pitch inside the gradual pitch zone increases smoothly and continuously from near the middle working section towards the reversing end of the screw. The maximum pitch P1 in the gradual pitch zone is greater than the basic pitch P0. A pin structure is set inside the slider, and the pin is embedded in the spiral groove of the reciprocating screw. When the auxiliary servo motor drives the reciprocating screw to rotate at a constant speed, the screw... The rotary groove drives the pin, which in turn drives the slider to perform axial reciprocating linear lateral movement. A wire guide is fixed to the slider by bolts. The wire to be wound passes through the wire guide hole in the wire guide for guidance. When the pin is in the middle working section of the screw, the slider and wire guide complete the middle wire laying operation at a basic lateral speed V0. After the pin and slider enter the left or right gradually changing pitch zone, with the screw speed remaining constant, the axial movement speed of the slider automatically increases due to the increased pitch, and the lateral speed exceeds the basic lateral speed V0. The wire guide, carrying the wire, quickly passes the reversing positions at both ends of the bobbin, reducing wire loss. The coils are stacked and accumulated at the end position. The spiral groove in the gradient pitch area adopts a continuous and smooth transition. The pitch change curve can be linear or parabolic gradient. There are no abrupt steps on the groove wall, ensuring smooth sliding of the pin and reducing impact, jamming, and wear of parts. The maximum pitch P1 in the gradient pitch area is 1.1-2 times the basic pitch P0. If the ratio is too small, the speed-up effect will be insufficient; if the ratio is too large, the end wire will be too sparse, resulting in wire skipping. The reversing transition groove and the end of the gradient pitch area are smoothly connected to ensure that the pin can smoothly complete the rotation direction switching. The wire guide is rigidly fixed by bolts and sliders, which is convenient for disassembly and assembly. Different wire guides with different hole diameters and structural forms can be quickly replaced according to different wire specifications, and it is compatible with various specifications of wires such as chemical fiber filaments, metal microfilaments, and cables.

[0013] Preferably, the inner wall of the mounting shell is threadedly connected to the connecting block by bolts, and the outer wall of the connecting block is fixedly connected to the guide plate.

[0014] This setting: The connecting block is bolted and fixed to the side wall of the mounting shell. The connecting block serves as a transitional connector to achieve a stable connection between the guide plate and the mounting shell. The guide plate is made of a single thick steel plate and is arranged parallel to the axial side of the reciprocating screw. As a linear guide base, the guide plate provides motion constraints for the slider assembly, preventing the slider from rotating circumferentially with the reciprocating screw and ensuring that the slider can only perform pure axial linear reciprocating motion.

[0015] Preferably, the surface of the guide plate is machined with a groove, and the inner wall of the groove is slidably connected to the U-shaped part.

[0016] This feature involves machining a long, continuous groove on the guide plate. The length of the groove is greater than the total reciprocating stroke of the slider. The U-shaped component is inserted into the groove and can slide freely axially along it. The groove strictly limits the movement of the U-shaped component, restricting it to move only along the length of the groove and limiting all other directions of freedom. The inner wall of the groove can be polished to reduce the frictional resistance of the U-shaped component during reciprocating sliding, reduce wear, and extend the service life of the components.

[0017] Preferably, the upper end of the U-shaped member is fixedly connected to the guide wire member.

[0018] This feature: The upper part of the U-shaped component and the wire guide are rigidly connected by welding or bolting. The U-shaped component, the wire guide, and the slider form a linked whole. When the reciprocating screw drives the slider to move axially, the U-shaped component slides synchronously inside the groove. Relying on the guiding constraint of the U-shaped component in the groove, the circumferential rotation tendency of the slider is completely eliminated, so that the slider and the wire guide run smoothly, the wire laying position is stable, and there will be no swaying or deflection, ensuring that the wire laying is neat.

[0019] Preferably, the end of the reinforcing frame is fixedly connected to the mounting frame, the outer wall of the mounting frame is fixedly connected to the main servo motor, and the output shaft of the main servo motor is inserted into the main shaft.

[0020] This setup: The mounting frame is welded and fixed to the end of the reinforcing frame. The mounting frame provides a solid mounting base for the main servo motor, which is a winding drive motor used to output torque to drive the spindle, inner cylinder, and winding drum to rotate, thereby achieving wire winding. The output shaft of the main servo motor is connected to the spindle in a plug-in manner to transmit torque. The plug-in transmission structure is simple to position and center, and easy to disassemble and assemble. When the motor needs maintenance and repair, the motor can be directly disassembled without disassembling the reinforcing frame, spindle bearings, and other components, reducing the workload of equipment maintenance.

[0021] Preferably, the end of the auxiliary servo motor is inserted into the connecting shaft, and the end of the connecting shaft is inserted into the reciprocating screw.

[0022] This setup involves plugging the output of the secondary servo motor into a connecting shaft. The other end of the connecting shaft also uses a plug-in structure to connect to a variable pitch reciprocating screw. The plug-in torque transmission structure is easy to assemble and disassemble. When the production process changes and the pitch parameters need to be adjusted, the reciprocating screw can be directly disassembled and replaced with reciprocating screw parts of different gradually varying pitch parameters. This adapts to the anti-shoulder process requirements of wires of different materials and diameters. No changes to the motor or electronic control program are required; process adjustments can be completed simply by replacing the screw mechanical parts. This requires low technical skills from operators, and ordinary maintenance personnel in the workshop can complete the parts replacement work.

[0023] The present invention proposes a mechanism for preventing shoulder protrusion at both ends of a variable pitch reciprocating screw winding system. The advantages are as follows: the variable pitch reciprocating screw prevents shoulder protrusion at both ends of the winding; a secondary servo motor drives the reciprocating screw to rotate at a constant speed; a pin drives the slider and guide wire component to reciprocate laterally; the guide plate's groove, in conjunction with a U-shaped component, guides the slider and prevents it from deflecting; the pitch increases in the gradually changing pitch areas on both sides of the reciprocating screw, causing the slider to automatically accelerate when it reaches both ends of the bobbin, shortening the wire dwell time and reducing wire coil stacking; the internal threaded ring of the winding mechanism locks the winding cylinder to prevent winding movement; the connecting frame, combined with a reinforcing frame, improves the overall machine rigidity, resulting in good winding quality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the connecting frame structure; Figure 3 for Figure 1 Schematic diagram of the winding mechanism; Figure 4 for Figure 1 Schematic diagram of the main servo motor structure; Figure 5 for Figure 1 Schematic diagram of the auxiliary mechanism; Figure 6 for Figure 1 Schematic diagram of the middle slider and guide wire components; Figure 7 for Figure 1 Schematic diagram of the connection block and guide plate assembly; Figure 8 for Figure 5 Schematic diagram of a reciprocating screw structure; Figure 9 for Figure 8 Schematic diagram of the spiral groove Figure 10 for Figure 1 Schematic diagram of the fixed base structure.

[0025] In the diagram: 1. Connecting frame, 2. Mounting hole, 3. Reinforcing frame, 4. Fixing seat, 5. Secondary servo motor, 6. Winding mechanism, 601. Main shaft, 602. Inner cylinder, 603. Winding cylinder, 604. Internal threaded ring, 7. Connecting shaft, 8. Auxiliary mechanism, 801. Mounting shell, 802. Reciprocating screw, 803. Slider, 804. Guide wire component, 805. Pin, 9. Connecting block, 10. Guide plate, 11. Slide groove, 12. U-shaped component, 13. Mounting frame, 14. Main servo motor. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings: Please see Figure 1-10 In this embodiment, a mechanism for preventing shoulder protrusion at both ends of a variable pitch reciprocating screw winding includes a connecting frame 1 and mounting holes 2. The mounting holes 2 are machined on the inner wall of the connecting frame 1, and a reinforcing frame 3 is welded to the outer wall of the connecting frame 1. Triangular reinforcing ribs are welded between the reinforcing frame and the connecting frame to improve the overall rigidity. The plate thickness of the connecting frame and the reinforcing frame can be adapted to the winding tonnage of the whole machine. For conventional small and medium winding conditions of chemical fiber filament, the plate thickness is selected as 12 to 16 mm. For heavy metal wire winding conditions, the plate thickness is increased to more than 20 mm. The triangular reinforcing ribs are arranged at intervals at the corner positions of the connecting frame and the reinforcing frame, with one rib every 120 mm, to eliminate local stress concentration caused by alternating loads on the frame and avoid the problem of local deformation and cracking of the frame after long-term high-speed reciprocating operation of the equipment. After the entire welding is completed, stress-relieving annealing treatment is required to eliminate residual internal stress and ensure the long-term dimensional and positional accuracy of each mounting reference surface after subsequent machining, so that the bearing hole and bolt hole positions will not shift after a period of use. The outer wall of the connecting frame 1 is connected to the fixing seat 4 by bolts and threads. The outer wall of the fixing seat 4 is equipped with a secondary servo motor 5. The inner wall of the reinforcing frame 3 is connected to the winding mechanism 6.

[0027] The winding mechanism 6 includes a main shaft 601. The winding mechanism 6 is responsible for clamping the winding bobbin and rotating the winding bobbin 603 to complete the winding and coiling operation of the wire. The two ends of the main shaft 601 are rotatably connected to the reinforcing frame 3 through rolling bearings. The main shaft is made of 42CrMo alloy steel after quenching and tempering, and the bearings at both ends are self-aligning roller bearings, which can offset the slight coaxiality deviation caused by assembly and withstand the radial impact load generated during the winding process. The bearing housing has a reserved grease filling channel. The equipment does not need to disassemble the bearing assembly for daily maintenance. The grease filling operation can be completed directly through the external grease nipple, reducing the difficulty of on-site maintenance. A positioning step is set at the shoulder of the main shaft to axially limit the inner ring of the bearing and prevent the bearing from moving under high-speed rotation conditions. The inner cylinder 602 is fixed at the end of the spindle 601. The outer wall of the inner cylinder 602 is inserted into the winding cylinder 603. The outer wall of the inner cylinder 602 is threaded with an inner threaded ring 604. The end face of the inner threaded ring 604 presses against the winding cylinder 603 to achieve axial locking and positioning. An annular rubber buffer washer is set on the pressing end face of the inner threaded ring. The washer can absorb the small vibrations caused by high-speed winding, avoid metal hard contact and damage to the end face of the winding cylinder. At the same time, it can increase friction damping and further suppress the axial movement of the winding cylinder. The washer is made of oil-resistant and wear-resistant nitrile rubber, which can be adapted to the continuous long-term production conditions in the workshop.

[0028] The inner wall of the fixed base 4 is fitted with a bearing housing, and the bearing housing is rotatably connected to the connecting shaft 7. The inner wall of the connecting frame 1 is connected to the auxiliary mechanism 8. The auxiliary mechanism 8 includes a mounting shell 801. The inner wall of the mounting shell 801 is threadedly connected to the connecting frame 1 by bolts. Support bearings are fitted at both ends of the mounting shell 801. The inner wall of the mounting shell 801 is rotatably fitted with a reciprocating screw 802 through the bearings. The reciprocating screw 802 has left-hand and right-hand helical grooves machined on its body, which are connected end to end. The screw is divided axially into a middle working section, a left-hand gradually changing pitch area, and a right-hand gradually changing pitch area. The middle working section has a constant basic pitch P0. The pitch in the left and right gradually changing pitch areas increases smoothly parabolically from the middle to the end of the screw. The maximum pitch P1 is 1.17 times the basic pitch. The reciprocating screw features a smooth transition groove at both ends of the spiral groove, seamlessly connecting the ends of the gradually changing pitch area. The entire screw undergoes tempering and surface nitriding treatment, increasing the hardness of the spiral groove wall and reducing wear caused by the reciprocating sliding of the pin, thus extending the screw's service life. The bottom radius of the spiral groove is enlarged to eliminate residual sharp corners from machining, reducing stress impact during pin movement. The pin is made of high-hardness bearing steel with a polished outer surface. A reasonable gap of 0.1-0.2 mm is maintained between the pin and the spiral groove wall. Too small a gap can lead to thermal expansion and jamming, while too large a gap can cause the wire routing position to wobble, affecting the neatness of the coil end face. In actual assembly, the clearance can be fine-tuned by selecting pins of different diameters. A slider 803 slides along the outer wall of the reciprocating screw 802. A pin 805 is embedded inside the slider and inserted into the spiral groove of the reciprocating screw. The guide wire component 804 is fixed to the inner wall of the slider 803 by bolts. The pin 805 is installed on the inner wall of the slider 803. The variable pitch reciprocating screw 802 prevents bulging at both ends of the winding. The auxiliary servo motor 5 drives the reciprocating screw 802 to rotate at a constant speed. The pin 805 drives the slider 803 and the wire guide 804 to reciprocate laterally. The groove 11 of the guide plate 10, together with the U-shaped part 12, guides the slider to avoid deflection. The pitch of the gradually changing pitch area on both sides of the reciprocating screw 802 increases, so that the slider 803 automatically speeds up when it reaches the two ends of the bobbin, shortening the wire dwell time and reducing wire coil stacking. The internal thread ring 604 of the winding mechanism 6 locks the winding cylinder 603 to prevent winding movement. The connecting frame 1, together with the reinforcing frame 3, improves the rigidity of the whole machine and ensures good winding quality.

[0029] The inner wall of the mounting housing 801 is connected to the connecting block 9 by bolts and threads. The outer wall of the connecting block 9 is fixed to the guide plate 10. The surface of the guide plate 10 is provided with an elongated groove 11. The inner wall of the groove 11 is slidably fitted with a U-shaped part 12. The upper end of the U-shaped part 12 is rigidly fixed to the guide wire part 804. The guide plate is quenched and ground as a whole. The roughness of the inner wall of the groove is controlled within Ra1.6 to reduce the reciprocating sliding friction resistance of the U-shaped part. The contact part between the U-shaped part and the groove is inlaid with a self-lubricating copper sleeve, which does not require frequent lubrication and can reduce the risk of oil contamination of the filament. It is suitable for the clean production requirements of chemical fiber filament. In addition to bolt fastening, a positioning pin is also set between the U-shaped part and the guide wire part to prevent the bolt from loosening due to long-term vibration, and to ensure that the relative position of the U-shaped part and the guide wire part will not shift, thus avoiding a decrease in guiding accuracy. The reinforcing frame 3 is welded to the end of the mounting frame 13. The main servo motor 14 is fixed to the outer wall of the mounting frame. The output shaft of the main servo motor 14 and the main spindle 601 are connected by a plug-in method to achieve torque transmission. The end of the auxiliary servo motor 5 is plugged into the connecting shaft 7. The other end of the connecting shaft 7 is plugged into the end of the reciprocating screw 802 for transmission. The plug-in part uses a flat key to transmit torque. The plug-in fit tolerance is selected as H7 / h6. It is convenient to disassemble and assemble and can ensure stable torque transmission. The flat key is a standard ordinary flat key. After the keyway is machined, the burrs are removed to prevent the assembly from scratching the mating surface. Both the main servo motor and the auxiliary servo motor are equipped with a brake structure. The brake locks the output shaft when the equipment stops to avoid the sliding and wire guide parts from slipping and misaligning due to inertia, and to ensure that the starting position of the wiring is consistent every time the machine is started.

[0030] Working principle: Assembly process During production and assembly, multiple sets of countersunk mounting holes 2 are machined on the connecting frame 1. Using the mounting holes 2 and bolts, the entire mechanism is positioned and locked onto the frame of the winding equipment. Adjusting shims can be added at the joint between the frame assembly surface and the connecting frame. By increasing or decreasing the thickness of the shims, the levelness and coaxiality of the entire mechanism can be corrected to ensure that the axis of the reciprocating screw and the axis of the winding drum remain parallel to each other. The parallelism error between the two is controlled within 0.05 mm per meter. If the two are misaligned, the guide wire will experience lateral force during the wire laying process, the wear of the U-shaped part and the slide will be accelerated sharply, and it will also cause uneven wire laying density. In actual assembly, a dial indicator is needed for verification. After the correction is completed, all fixing bolts are tightened. After all bolts are assembled, they are tightened in stages according to the torque specified by the torque wrench to prevent the bolts from gradually loosening due to equipment vibration. Thread-locking adhesive can also be applied to bolts at critical stress points to further improve reliability. The connecting frame 1 is welded with a reinforcing frame 3 and triangular reinforcing ribs on the outside. The main shaft 601 and the bearings at both ends are installed inside the reinforcing frame. The inner cylinder 602 is welded to the end of the main shaft 601. The winding cylinder 603 is inserted and fitted onto the outer surface of the inner cylinder 602. The inner thread ring 604 is screwed on, and the end face of the inner thread ring presses against the end face of the winding cylinder to complete the axial locking and positioning of the winding cylinder. The mounting frame 13 is welded to the end of the reinforcing frame, and the main servo motor 14 is fixedly installed on the mounting frame. The output shaft of the main servo motor and the end of the main shaft are inserted into the position to realize the transmission of winding power.

[0031] The connecting frame 1 is bolted to the fixing seat 4, and the auxiliary servo motor 5 is installed on the fixing seat. The connecting shaft 7 is installed in the bearing seat inside the fixing seat. The mounting shell 801 is bolted to the connecting frame 1, and the support bearings are installed at both ends of the mounting shell. The custom-made variable pitch reciprocating screw 802 is installed in the bearings on both sides. The output end of the auxiliary servo motor 5 is inserted into the connecting shaft 7, and the other end of the connecting shaft is inserted into the end of the reciprocating screw 802, thus completing the wiring power link connection.

[0032] Mounting housing 801, side wall bolts lock connecting block 9, connecting block outer side fixed guide plate 10, guide plate 10 machined with long strip groove 11, U-shaped part 12 installed inside the groove, slide block 803 assembled onto reciprocating screw 802 rod body, slide block internal pin 805 embedded inside screw spiral groove, guide wire part 804 fastened with bolts on top of slide block, lower end of guide wire part and U-shaped part 12 rigidly fixed, complete the whole machine assembly operation, after assembly, manually rotate motor shaft to confirm that the main shaft rotation, reciprocating screw rotation, and slide block reciprocating lateral movement are without jamming or interference throughout the entire process, then it can be put into commissioning and production. During the commissioning stage, priority is given to no-load test run, no less than 30 minutes of no-load run, observe the temperature rise, vibration and noise of each part, after confirming that there are no abnormalities, then thread wire and carry out load test production. Select wire of corresponding specification for test production, observe the forming state of both ends of the coil, and according to the actual shoulder suppression effect, different maximum pitch P1 can be changed. The reciprocating screw parts are adapted to production conditions of wires with different diameters and toughnesses.

[0033] Usage process During the formal winding operation, the end of the filament to be processed is passed through the wire guide hole of the wire guide 804 and fixed on the wall of the winding drum 603. The equipment is started and the main servo motor 14 starts to run. The output torque drives the main shaft 601, inner drum 602 and winding drum 603 to rotate synchronously at high speed. The rotation of the winding drum winds and rewinds the filament.

[0034] Meanwhile, the auxiliary servo motor 5 maintains a constant speed output, driving the variable pitch reciprocating screw 802 to maintain a constant speed rotation through the connecting shaft 7. The left-hand and right-hand helical grooves on the reciprocating screw drive the internal pin 805 of the slider, causing the slider 803 to perform axial reciprocating linear lateral movement. The U-shaped part 12 follows the slider assembly and slides synchronously inside the slide groove 11 of the guide plate 10. The guiding constraints of the slide groove 11 and the U-shaped part 12 completely restrict the circumferential rotation of the slider 803, ensuring that the slider 803 and the guide wire part 804 can only make smooth axial reciprocating movements.

[0035] When the slider pin 805 is running in the middle working section area of ​​the reciprocating screw 802, the spiral groove in the middle working section has a constant basic pitch. The slider, carrying the wire guide, completes the wire arrangement operation in the middle area of ​​the winding drum at a basic lateral speed V0, ensuring that the wire coil arrangement density in the middle of the coil is uniform.

[0036] When the dial pin 805 moves to one side with the slider and enters the left or right gradual pitch zone of the reciprocating screw, the screw speed remains constant, and the pitch in the gradual pitch zone gradually increases. The slider and guide wire 804... The axial movement speed automatically increases, exceeding the basic lateral movement speed V0. The guide wire quickly sweeps the wire across the reversing positions at both ends of the winding drum, significantly shortening the dwell time of the wire at the reversing positions at both ends of the drum. This effectively reduces the repeated stacking and accumulation of wire coils at the ends of the drum, suppressing the generation of shoulder defects at both ends of the winding from a mechanical structure perspective. This mechanism relies on the geometric contour of the screw's own spiral groove to achieve end speed increase, without relying on real-time speed adjustment by the control system. Even if there are brief fluctuations in servo communication during the production process, the end speed change function will not be lost, making the equipment more fault-tolerant. It can also be directly adapted to old control systems in the workshop without upgrading the electrical control program, reducing equipment modification costs. For high-toughness metal microfilaments, the axial length of the gradient pitch zone can be appropriately reduced, concentrating the speed increase range at the edge of the drum and avoiding excessive end wire spacing that could cause wire skipping. For brittle chemical fiber filaments, the gradient pitch zone can be appropriately lengthened to make the speed change smoother and reduce the probability of wire breakage during reversal.

[0037] After the pin 805 completes the gradual pitch zone, it enters the reversing transition groove at the end of the screw. The spiral groove rotation direction is smoothly switched, and the slider then begins to move laterally in the opposite direction to the other end. The above wire winding action is repeated, and the wire winding is completed continuously in a cycle.

[0038] After the entire batch of filament winding is completed, the equipment is stopped. The inner threaded ring 604 is unscrewed, and the winding drum 603, along with the finished filament roll, is directly removed from the inner drum 602. A brand new empty winding drum 603 is then installed, the inner threaded ring 604 is tightened to lock it, and the filament end is threaded. The next round of winding production can then begin. After several batches of production, the wear condition of the pins, U-shaped parts, and slides needs to be checked regularly. If the gap increases, it will be directly reflected on the end face of the roll, resulting in end face ripples and local stacking. Only a few easily damaged parts need to be replaced to restore the equipment's wiring accuracy. There is no need to disassemble the entire machine frame. The maintenance and replacement operations are convenient and meet the maintenance needs of continuous production in the chemical fiber wire workshop.

[0039] 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 mechanism for preventing the protrusion of both ends in the winding of a variable pitch reciprocating screw wire arrangement, comprising a connecting frame (1) and a mounting hole (2), the inner wall of the connecting frame (1) is processed with a mounting hole (2), characterized in that: The outer wall of the connecting frame (1) is fixedly connected to the reinforcing frame (3). The outer wall of the connecting frame (1) is threadedly connected to the fixing seat (4) by bolts. The outer wall of the fixing seat (4) is equipped with a secondary servo motor (5). The inner wall of the reinforcing frame (3) is connected to a winding mechanism (6).

2. The variable pitch, reciprocating screw, wire bunched, anti-shouldering mechanism of claim 1, wherein: The winding mechanism (6) includes a main shaft (601), the outer wall of the main shaft (601) is rotatably connected to the reinforcing frame (3), the end of the main shaft (601) is fixedly connected to the inner cylinder (602), the outer wall of the inner cylinder (602) is inserted into the winding cylinder (603), and the outer wall of the inner cylinder (602) is threadedly connected to the inner threaded ring (604).

3. The variable pitch, reciprocating screw, wire laying, shoulder-free, end- winding mechanism of claim 1 wherein: The inner wall of the fixed seat (4) is rotatably connected to the connecting shaft (7), and the inner wall of the connecting frame (1) is connected to an auxiliary mechanism (8).

4. The variable pitch, reciprocating screw, wire bunched, anti-shouldering mechanism of claim 1, wherein: The auxiliary mechanism (8) includes a mounting shell (801), the inner wall of which is threadedly connected to the connecting frame (1) by bolts, the inner wall of which is rotatably connected to the reciprocating screw (802), the outer wall of which is slidably connected to the slider (803), the inner wall of which is connected to the guide wire member (804) by bolts, and the inner wall of which is equipped with a pin (805).

5. The variable pitch, reciprocating screw, wire laying, shoulder-free, end- winding mechanism of claim 4 wherein: The inner wall of the mounting shell (801) is threadedly connected to the connecting block (9) by bolts, and the outer wall of the connecting block (9) is fixedly connected to the guide plate (10).

6. The variable pitch, reciprocating screw, wire bunched, anti-shouldering mechanism of claim 1, wherein: The guide plate (10) has a groove (11) machined on its surface, and the inner wall of the groove (11) is slidably connected to the U-shaped part (12).

7. The variable pitch, reciprocating screw, wire busing, anti-shouldering mechanism of claim 1 wherein: The upper end of the U-shaped member (12) is fixedly connected to the guide wire member (804).

8. The mechanism for preventing shoulders at both ends of a variable pitch reciprocating screw winding as described in claim 1, characterized in that: The end of the reinforcing frame (3) is fixedly connected to the mounting frame (13), the main servo motor (14) is fixedly connected, and the output shaft of the main servo motor (14) is inserted into the main shaft (601).

9. The mechanism for preventing shoulders at both ends of a variable pitch reciprocating screw winding as described in claim 1, characterized in that: The end of the auxiliary servo motor (5) is inserted into the connecting shaft (7), and the end of the connecting shaft (7) is inserted into the reciprocating screw (802).

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