A vertical fine metal wire rewinding machine

Abstract

The application discloses a vertical fine metal wire rewinding machine, and relates to the technical field of wire winding equipment, which comprises a rack and a plurality of rewinding stations arranged on the rack, each rewinding station comprises a female shaft winding drum, a guide wheel set and a small shaft winding drum from top to bottom in sequence, a side plate is arranged in the rack, a swing rod shaft is rotatably arranged on the side plate, a swing rod is sleeved on the swing rod shaft, and an automatic adjusting wheel is arranged at one end of the swing rod; an angle sensor is further arranged on the side plate, one end of the swing rod shaft is connected to an input shaft of the angle sensor; a sliding block is slidably arranged on the side plate, and a balance spring is arranged between the sliding block and the other end of the swing rod; the application is characterized in that the mechanical quick response of the balance spring and the electric control fine adjustment of the telescopic rod driving element are cooperated, so that the automatic adjusting wheel can be mechanically balanced with the tension change only by producing a very small angle deflection, the metal wire can be effectively prevented from being pulled out or broken, and the high-precision rewinding of the fine metal wire is achieved.

Description

Technical Field

[0001] This application relates to the technical field of wire winding equipment, and more specifically, to a vertical rewinding machine for fine metal wires. Background Technology

[0002] In the field of precision machining of micro-metal wires (especially precious metal wires, alloy wires and ultra-fine copper wires with a diameter of 0.01mm to 0.1mm), the rewinding process is a key link connecting wire drawing with subsequent stranding, plating or winding processes. The core task of this process is to rewind the drawn main shaft (mother shaft) metal wire onto a smaller I-beam (small shaft) according to the set length and tension requirements, so as to facilitate automated wire feeding and quantitative use in subsequent processes.

[0003] Currently, vertical rewinding machines are commonly used in the industry for the above operations. Existing vertical rewinding machines are usually equipped with multiple stations. Each station is equipped with a pay-off shaft (main shaft), a set of fixed guide wheels, and a take-up shaft (small shaft) from top to bottom. In order to ensure that the tension of the metal wire is constant during the rewinding process, a common technical means is to set a swingable tension adjusting wheel between the two fixed guide wheels. The adjusting wheel is connected to a spring mechanism. During operation, the metal wire passes around the adjusting wheel, and the tension of the spring is used to absorb and compensate for the speed difference and tension fluctuation between the pay-off end and the take-up end, thereby maintaining the basic tension of the wire.

[0004] However, the aforementioned existing technology still has shortcomings in practical applications. First, its tension adjustment relies entirely on a spring with fixed stiffness. When the diameter of the pay-off reel gradually decreases during the pay-off process, or when there are instantaneous fluctuations in the take-up speed, the spring mechanism can only respond passively, often causing the adjusting wheel to swing significantly. This significant swing can easily cause extremely fine metal wires to come out of the groove of the adjusting wheel, resulting in machine stoppage. On the other hand, the spring's reset overshoot can easily generate tension spikes, which can easily cause wire breakage for extremely fine wires with small diameters, significantly reducing production efficiency and yield.

[0005] In summary, existing vertical rewinding machines for fine metal wires have significant shortcomings in terms of the stability of dynamic response to tension control, and there is an urgent need for a new type of rewinding machine structure that can achieve rapid response and precise adjustment.

[0006] To address the aforementioned issues, we provide a vertical rewinding machine for fine metal wires. Summary of the Invention

[0007] To address the problems mentioned in the background art, this application provides a vertical rewinding machine for fine metal wires.

[0008] The vertical rewinding machine for fine metal wires provided in this application adopts the following technical solution:

[0009] A vertical rewinding machine for fine metal wires includes: a frame and a plurality of rewinding stations disposed on the frame, wherein each rewinding station comprises, from top to bottom:

[0010] The main shaft drum is used to unwind metal wire after preliminary processing.

[0011] The guide wheel assembly, located below the main shaft drum, is used to reverse the direction and adjust the tension of the metal wire during rewinding. It includes an automatic adjustment wheel.

[0012] A small shaft drum is positioned below the guide wheel assembly and is used to wind up the rewound metal wire;

[0013] The metal wire passes sequentially around the main shaft drum and the guide wheel assembly before being wound up onto the small shaft drum.

[0014] The frame is provided with a side plate, on which a swing arm shaft is rotatably mounted. A swing arm is fitted on the swing arm shaft, and the automatic adjustment wheel is rotatably mounted on one end of the swing arm.

[0015] An angle sensor is also installed on the side plate, and one end of the swing arm shaft is connected to the input shaft of the angle sensor;

[0016] A slider is slidably mounted on the side plate, and a telescopic rod drive is also mounted on the side plate. The drive end of the telescopic rod drive is connected to the slider and is used to drive the slider to slide relative to the side plate.

[0017] A balance spring is also installed between the slider and the other end of the swing arm to apply an elastic force to the swing arm, so that the automatic adjusting wheel maintains the tendency to press against the metal wire;

[0018] The angle sensor is electrically connected to the telescopic rod drive. The angle sensor controls the telescopic rod drive to slide the slider based on the detected change in the rotation angle of the swing arm shaft, so as to adjust the tension of the balance spring.

[0019] Beneficial effects: Through the synergistic effect of the rapid mechanical response of the balance spring and the electronic fine-tuning of the telescopic rod drive, when the tension of the metal wire fluctuates, the balance spring can respond instantly and absorb the impact. At the same time, after the angle sensor captures the deflection signal, it controls the telescopic rod drive to fine-tune the installation fulcrum position of the balance spring, precisely pulling the automatic adjusting wheel back to near the preset working angle. This allows the automatic adjusting wheel to achieve mechanical balance with the tension change with only a very small angle of deflection. This solution ensures that the automatic adjusting wheel always stays within a small range of oscillation during operation, effectively avoiding the risk of the metal wire coming out of the wheel groove due to large oscillation of the adjusting wheel. At the same time, it eliminates the tension spike caused by the overshoot of the mechanism, fundamentally preventing the breakage of the fine metal wire, and significantly improving the yield and winding quality.

[0020] In some embodiments, a groove is provided on the side plate, and the slider is slidably installed in the groove; when the slider slides towards the end of the rocker arm, the balance spring contracts, and when the slider slides away from the end of the rocker arm, the balance spring stretches.

[0021] Beneficial effects: By opening a groove on the side plate and cooperating with the sliding block, a movable mounting fulcrum is provided for the balance spring. When the slider approaches the end of the rocker arm, the balance spring contracts and the spring force decreases. When the slider moves away from the end of the rocker arm, the balance spring stretches and the spring force increases. This achieves bidirectional stepless adjustment of the spring tension. The groove structure is simple and easy to process, and it can provide precise linear motion guidance for the slider, ensuring the repeatability of the positioning accuracy of the telescopic rod drive component for adjusting the spring fulcrum position, thereby ensuring the stability and consistency of tension control.

[0022] In some embodiments, a master shaft motor is provided in the frame corresponding to the position of each of the master shaft drums, and the master shaft drums are mounted on the output shaft of the master shaft motors;

[0023] Beneficial effects: By independently configuring a master shaft motor for each master shaft drum, independent control of the wire feeding tension at each station is achieved. The master shaft motor can output a reverse torque to provide wire feeding resistance, and adjust the output torque in real time as the diameter of the metal wire on the master shaft drum gradually decreases, effectively preventing the metal wire from loosening or tangling due to inertia during the wire feeding process, and ensuring a smooth and reliable wire feeding process.

[0024] In some embodiments, the guide wheel assembly further includes a fixed wheel, which is fixed to the frame by a bracket, and the fixed wheel and the automatic adjustment wheel are offset from each other in the vertical projection direction;

[0025] Beneficial effects: The fixed wheel and the automatic adjusting wheel are staggered in the vertical projection direction, so that the metal wire forms a certain wrap angle when passing around the two wheels in sequence. This increases the contact area and wrap angle between the metal wire and the automatic adjusting wheel, ensuring that the automatic adjusting wheel has a sufficiently sensitive response to changes in the tension of the metal wire. At the same time, the fixed wheel plays a role in reversing and guiding the metal wire, so that the metal wire enters the automatic adjusting wheel at a suitable entry angle, ensuring the accuracy of tension detection.

[0026] In some embodiments, a manual adjustment table is also installed on the frame, and a manual shaft is rotatably mounted on the manual adjustment table via a bearing seat. Multiple support frames are fitted on the manual shaft.

[0027] The guide wheel assembly also includes a manually adjustable wheel, which is mounted on the support frame, and the fixed wheel, the automatic adjusting wheel and the manually adjustable wheel are arranged in order from top to bottom;

[0028] A lever is also installed at one end of the manual shaft, and the manual shaft and the bearing housing are maintained in a damped rotational connection.

[0029] Beneficial effects: As a coarse tension adjustment mechanism, the manual adjustment wheel allows operators to rotate the manual shaft via a lever before equipment operation, simultaneously adjusting the deflection angle of each station's manual adjustment wheel, changing the wrap angle of the metal wire at the manual adjustment wheel, and quickly setting the tension of the entire line. Furthermore, the damped rotational connection between the manual shaft and the bearing seat ensures that the manual shaft remains at any adjustment angle without self-rotation after the operator releases the lever, guaranteeing the stability of the coarse adjustment setting. Additionally, the fixed wheel, automatic adjustment wheel, and manual adjustment wheel are arranged sequentially from top to bottom, forming a reasonable wire routing path in the vertical direction, resulting in smooth wire routing and a clear division of functions for each wheel: the fixed wheel is responsible for guidance, the automatic adjustment wheel for dynamic precision adjustment, and the manual adjustment wheel for static coarse adjustment.

[0030] In some embodiments, a slide block is also fixedly installed on the frame, and a winding table is slidably installed on the slide block. Multiple dual-axis frames are provided on the winding table, and small shaft drums are fitted on the two output shafts of each dual-axis frame.

[0031] Wherein, every two of the aforementioned rewinding stations share one of the aforementioned dual-axis test benches;

[0032] Beneficial effects: By setting the small shaft drum on a sliding winding table, the axial winding function of the metal wire during the winding process is realized. Each two rewinding stations share a dual-axis frame, that is, one dual-axis frame drives two small shaft drums to rotate synchronously at the same time. While ensuring that the winding speed of the two stations is consistent, the number of drive motors and transmission components is reduced, the equipment structure is simplified, and the manufacturing cost is reduced. Moreover, the internal gear transmission of the dual-axis frame ensures strict synchronization of the two output shafts, thereby ensuring the consistency of the winding speed of the two stations.

[0033] In some embodiments, a slide rail is mounted on the slide block, and the winding table is slidably mounted on the slide block via the slide rail;

[0034] Beneficial effects: The sliding cooperation between the slide rail and the winding table provides precise linear guidance for the reciprocating motion of the winding table. The slide rail has the characteristics of low friction coefficient, smooth movement and strong load-bearing capacity, which can ensure the positioning accuracy and running stability of the winding table in high-frequency reciprocating motion, thereby ensuring that the metal wire is evenly distributed on the small shaft drum and avoiding unevenness or local accumulation of wire on the end face of the coil caused by uneven wire distribution.

[0035] In some embodiments, a linear drive motor is also installed at one end of the slide block, and the output shaft of the linear drive motor is connected to the winding table for driving the winding table to slide back and forth along the slide rail.

[0036] Beneficial effects: The linear drive motor provides precise power for the reciprocating motion of the winding table. During the rewinding process, the small shaft drum continuously rotates to wind the metal wire, and the linear drive motor synchronously drives the winding table to slide back and forth along the slide rail, so that the axial position of the metal wire relative to the small shaft drum changes continuously, thereby evenly and layering the metal wire onto the small shaft drum. Furthermore, the reciprocating motion of the winding table and the rotational motion of the small shaft drum are also linked through the control system, which can adjust the transverse speed in real time according to the rotational speed of the small shaft drum and the set winding pitch, so that the winding pitch is uniform and the end face of the wire spool is neat, effectively improving the capacity utilization rate of the small shaft drum and the appearance quality of the winding. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the rack in this application;

[0038] Figure 2 This is a schematic diagram showing the direction of the metal wire in this application;

[0039] Figure 3 This is a schematic diagram of the automatic adjustment wheel and related structures of this application;

[0040] Figure 4 This application Figure 3 A schematic diagram of the related structure from another perspective;

[0041] Figure 5 This is a structural schematic diagram of the main shaft drum and guide wheel assembly of this application;

[0042] Figure 6 This is a schematic diagram of the manual adjustment wheel and related structures of this application;

[0043] Figure 7 This is a schematic diagram of the small shaft roller and related structures of this application.

[0044] Explanation of reference numerals in the attached diagram: 1. Frame;

[0045] 2. Mother shaft drum; 201. Mother shaft motor;

[0046] 3. Guide wheel assembly; 31. Fixed wheel; 32. Automatic adjustment wheel; 33. Manual adjustment wheel;

[0047] 3201, Side plate; 3202, Rocker arm shaft; 3203, Rocker arm; 3204, Slider; 3205, Balance spring; 3206, Angle sensor; 3207, Telescopic rod drive component;

[0048] 3301. Manual adjustment table; 3302. Manual shaft; 3303. Support frame; 3304. Hand lever;

[0049] 4. Small shaft drum; 401. Rewinding table; 402. Dual-axis frame; 403. Slide; 404. Slide rail; 405. Linear drive motor. Detailed Implementation

[0050] The following is in conjunction with the appendix Figures 1 to 7 This application will be described in further detail.

[0051] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] It should be noted that the accompanying drawings are schematic and not to scale. For clarity and convenience, the relative dimensions and proportions of the parts shown in the drawings have been exaggerated or reduced in size; any dimensions are merely exemplary and not limiting. Furthermore, the same reference numerals are used for the same structures, elements, or fittings appearing in more than two drawings to indicate similar features.

[0053] Reference Figure 1 , Figure 2 As shown, a vertical rewinding machine for fine metal wires according to this application includes a frame 1 and a plurality of rewinding stations disposed on the frame 1;

[0054] In this embodiment of the application, there are four rewinding stations, and each rewinding station is arranged side by side along the width direction of the frame 1. Each rewinding station includes, from top to bottom, a main shaft drum 2, a guide wheel group 3 and a small shaft drum 4.

[0055] In this embodiment, the frame 1 is a vertical frame structure, welded from steel profiles, which has sufficient structural rigidity and stability. The front side of the frame 1 is the operating surface, and the rear side is the mounting surface. Multiple mounting plates are provided inside for fixing various functional components.

[0056] Reference Figures 2 to 5 As shown, a mother shaft drum 2 is provided at the upper part of the frame 1 for unwinding the pre-processed metal wire;

[0057] In this embodiment of the application, a master shaft motor 201 is provided in the frame 1 at the position corresponding to each master shaft drum 2. The master shaft motor 201 is fixedly installed on the top crossbeam of the frame 1, and its output shaft extends horizontally to the front side of the frame 1. The master shaft drum 2 is fitted on the output shaft of the master shaft motor 201 and is circumferentially fixed by key connection.

[0058] Specifically, the master shaft motor 201 is a servo motor, whose speed and torque can be precisely adjusted by the control system. During the rewinding process, the master shaft motor 201 outputs a reverse torque, which causes the master shaft drum 2 to apply appropriate wire feeding resistance to the metal wire, preventing the metal wire from loosening or tangling due to inertia during the wire feeding process. As the diameter of the metal wire on the master shaft drum 2 gradually decreases, the control system adjusts the output torque of the master shaft motor 201 in real time according to the tension feedback signal to maintain the relative stability of the wire feeding tension.

[0059] Reference Figure 1 , Figure 2 As shown, the guide wheel group 3 is located below the mother shaft drum 2 and is used to reverse the direction and adjust the tension of the metal wire during the rewinding process.

[0060] In this embodiment, the guide wheel assembly 3 includes a fixed wheel 31, an automatic adjusting wheel 32, and a manual adjusting wheel 33, which are arranged sequentially from top to bottom:

[0061] The fixed wheel 31 is fixedly installed on the frame 1 by a bracket. Its installation position is above the automatic adjustment wheel 32 and further away from the frame 1 than the automatic adjustment wheel 32. The wheel surfaces of the fixed wheel 31, the automatic adjustment wheel 32 and the manual adjustment wheel 33 are provided with guide grooves for the initial reversal of the metal wire.

[0062] The automatic adjusting wheel 32 is mounted on the automatic response mechanism, and its position can be automatically adjusted according to the tension change. It is the core component for achieving constant tension control in this application. The specific installation method of the automatic adjusting wheel 32 will be described in detail below.

[0063] The manual adjustment wheel 33 is mounted on the manual adjustment table 3301 and is used to manually set the coarse tension adjustment range when debugging the equipment or changing the wire specifications. The installation structure of the manual adjustment wheel 33 will be described in detail later.

[0064] Based on this, the routing direction of the metal wire is as follows:

[0065] The metal wire is led out downwards from the main shaft drum 2;

[0066] It extends downwards from the front side of the fixed wheel 31, passing under the fixed wheel 31;

[0067] After reaching the position of the automatic adjustment wheel 32, it goes around the back of the automatic adjustment wheel 32, passes through the bottom of the automatic adjustment wheel 32, and extends forward and upward;

[0068] After reaching the position of the manual adjustment wheel 33, it goes around the top of the manual adjustment wheel 33 and extends downwards through the front side of the manual adjustment wheel 33;

[0069] Finally, it is wound onto the small shaft spool 4.

[0070] It should be noted that the fixed wheel 31 and the automatic adjustment wheel 32 are staggered in the vertical projection direction, that is, they are not on the same vertical line. This structural design allows the metal wire to form a certain wrap angle when it passes around the two wheels in sequence, thereby increasing the contact area between the metal wire and the automatic adjustment wheel 32. This ensures that the automatic adjustment wheel 32 has a sufficiently sensitive response to changes in the tension of the metal wire. At the same time, the automatic adjustment wheel 32 and the manual adjustment wheel 33 are also staggered in the vertical projection direction, so that the metal wire also obtains an appropriate wrap angle on the manual adjustment wheel 33, which facilitates the manual adjustment wheel 33 to perform the coarse tension adjustment function.

[0071] Reference Figures 2 to 5 As shown, the automatic response mechanism is fixed on the side plate 3201 inside the frame 1. The side plate 3201 is a vertically arranged metal plate, which is fixedly installed on the internal frame of the frame 1 to support the various components of the automatic response mechanism.

[0072] In this embodiment of the application, a rocker arm shaft 3202 is rotatably mounted on the side plate 3201 via a bearing seat;

[0073] Specifically, the bearing housing is fixed to the surface of the side plate 3201, and the rocker arm shaft 3202 passes through the bearing housing and can rotate freely around its own axis;

[0074] In this embodiment, a swing arm 3203 is mounted on the swing arm shaft 3202. The swing arm 3203 is a long rod with its middle part near the end fixedly connected to the swing arm shaft 3202. The other end is a free end, which can swing up and down with the rotation of the swing arm shaft 3202. The automatic adjustment wheel 32 is rotatably mounted on the free end of the swing arm 3203 through a wheel axle and bearing. The automatic adjustment wheel 32 can rotate freely around its own axis.

[0075] Furthermore, an angle sensor 3206 is also installed on the side panel 3201;

[0076] Specifically, the housing of the angle sensor 3206 is fixed to the side plate 3201 by a mounting base, and the angle sensor 3206 and the rocker arm 3203 are located on both sides of the side plate 3201 respectively. The input shaft of the angle sensor 3206 and one end of the rocker arm shaft 3202 are coaxially fixedly connected by a coupling.

[0077] Preferably, the angle sensor 3206 is a high-precision rotary potentiometer or a magnetically encoded angle sensor to ensure accurate detection of the minute swings of the pendulum 3203;

[0078] When the tension of the metal wire changes, the pressure of the metal wire on the automatic adjustment wheel 32 changes accordingly, thereby pushing the swing arm 3203 to swing around the swing arm shaft 3202. The rotation angle of the swing arm shaft 3202 is detected in real time by the angle sensor 3206 and converted into an electrical signal output to the control system.

[0079] Furthermore, a slider 3204 is slidably mounted on the side plate 3201;

[0080] Specifically, a groove is provided on the surface of the side plate 3201. The groove extends horizontally, and the slider 3204 is slidably installed in the groove. A linear guide pair or a sliding bushing can be provided between the slider 3204 and the groove to reduce sliding friction and ensure that the slider 3204 moves smoothly.

[0081] In this embodiment of the application, a telescopic rod drive 3207 is also installed on the side plate 3201. The housing of the telescopic rod drive 3207 is fixed on the side plate 3201, and its drive end is connected to the slider 3204.

[0082] Specifically, the telescopic rod drive 3207 preferably adopts a miniature electric push rod or a voice coil motor, and its extension amount can be precisely controlled by the control system. The telescopic rod drive 3207 is electrically connected to the angle sensor 3206. The output signal of the angle sensor 3206 is processed by the controller and used to control the action of the telescopic rod drive 3207.

[0083] In this embodiment of the application, a balance spring 3205 is also installed between the end of the slider 3204 and the swing rod 3203 (i.e. the end near the swing rod shaft 3202). The balance spring 3205 is a tension spring, one end of which is connected to the spring lug provided on the slider 3204 through the first hanging ring, and the other end is fixedly connected to the end of the swing rod 3203.

[0084] During use, the balance spring 3205 is always in a stretched state, applying tension to the swing arm 3203, causing the end of the swing arm 3203 extending from the front side of the side plate 3201 to swing downward, thereby driving the automatic adjustment wheel 32 to press against the metal wire, keeping the metal wire taut.

[0085] During operation, the angle sensor 3206 detects the rotation angle of the swing arm shaft 3202 in real time. This angle reflects the deviation between the current position of the automatic adjustment wheel 32 and the preset balance position, i.e. the current tension. Based on the detection signal of the angle sensor 3206, the control system sends a control command to the telescopic rod drive 3207 to drive the slider 3204 to slide along the groove.

[0086] Its specific control logic is as follows:

[0087] When the tension of the metal wire decreases, the upward pressure of the metal wire on the automatic adjustment wheel 32 decreases, and the tension of the balance spring 3205 becomes dominant, pulling the rocker arm 3203 to swing downward. The angle sensor 3206 detects that the rocker arm shaft 3202 deflects in the direction of reducing the tension of the balance spring 3205. The control system then controls the telescopic rod drive 3207 to push the slider 3204 along the slide groove towards the end of the rocker arm 3203.

[0088] At this time, the effective tensile length of the balance spring 3205 is shortened, the spring force is reduced, and the tension of the metal wire is rebalanced. Since the telescopic rod drive 3207 actively adjusts the mounting fulcrum position of the balance spring 3205, the swing rod 3203 only needs to produce a very small angle of deflection to re-establish the balance between the tension of the metal wire and the tension of the balance spring 3205. That is, the swing rod 3203 returns to the vicinity of the preset working angle. In other words, this application can make the automatic adjusting wheel 32 always keep within a small amplitude swing range during the operation by actively fine-tuning the fulcrum of the balance spring 3205.

[0089] When the tension of the metal wire increases, the upward pressure of the metal wire on the automatic adjustment wheel 32 increases, overcoming the tension of the balance spring 3205 and pushing the rocker arm 3203 to swing upward. The angle sensor 3206 detects that the rocker arm shaft 3202 deflects in the direction of increasing the tension of the balance spring 3205. The control system then controls the telescopic rod drive 3207 to drive the slider 3204 to move along the slide groove away from the end of the rocker arm 3203.

[0090] At this time, the effective tensile length of the balance spring 3205 increases, the spring force increases, and it is rebalanced with the increased tension of the metal wire. Similarly, by actively fine-tuning the fulcrum of the balance spring 3205, the automatic adjustment wheel 32 is kept within a small range of swing during operation.

[0091] Therefore, the automatic response mechanism of this application, by using a balance spring 3205 as a mechanical fast response element, can react instantly to the instantaneous fluctuations in the tension of the metal wire without the need for calculation delay by the electronic control system. The response speed is extremely fast, which can effectively absorb sudden tension shocks and prevent the metal wire from breaking due to tension spikes.

[0092] Meanwhile, the telescopic rod drive component 3207, as a slow-speed adjustment element, only compensates for the slow drift of tension (such as the tension change caused by the reduction of the diameter of the mother shaft drum 2), so that the swing rod 3203 is always kept near the preset optimal working angle.

[0093] This collaborative working mode of "rapid spring response + slow electronic adjustment" allows the automatic adjusting wheel 32 to adapt to a wide range of tension fluctuations with only a very small swing amplitude, such as ±2° to ±3°, during operation. Compared with the traditional pure spring tension adjustment mechanism, its swing amplitude can reach more than ±20°. This application can greatly reduce the risk of the automatic adjusting wheel 32 coming off the wire or the metal wire breaking.

[0094] In addition, by changing the position of the slider 3204 through the telescopic rod drive 3207, the pre-tension of the balance spring 3205 is essentially changed, thereby changing the initial tension of the balance spring 3205. This allows the same balance spring 3205 to be adapted to the tension setting requirements of different wire diameters or different materials of metal wires through electronic control, without the need to replace the balance spring 3205 with different stiffness as in traditional solutions.

[0095] Reference Figure 1 , Figure 6 As shown, a manual adjustment table 3301 is also installed on the frame 1. The manual adjustment table 3301 is a mounting plate fixed on the frame 1.

[0096] In this embodiment of the application, a manual shaft 3302 is rotatably mounted on the manual adjustment table 3301 via a bearing seat;

[0097] Specifically, the manual shaft 3302 is set horizontally, with its two ends supported in the bearing housing. Multiple support frames 3303 are mounted on the manual shaft 3302. The number of support frames 3303 corresponds to the number of rewinding stations. Each support frame 3303 is equipped with a manual adjustment wheel 33.

[0098] In this embodiment, a lever 3304 is also installed at one end of the manual shaft 3302. The lever 3304 is vertically installed on the manual shaft 3302. The operator can hold the lever 3304 to rotate the manual shaft 3302, thereby synchronously adjusting the deflection angle of the manual adjustment wheel 33 in each rewinding station through the support frame 3303.

[0099] It should be noted that the manual shaft 3302 maintains a damped rotational connection with the bearing housing;

[0100] Specifically, a friction damping sleeve is provided inside the bearing housing. The friction damping sleeve is pressed against the journal of the manual shaft 3302, providing a constant frictional torque for the rotation of the manual shaft 3302. When the operator rotates the manual shaft 3302 to a certain angle through the lever 3304, the manual shaft 3302 can be maintained at that angle position under the frictional force of the friction damping sleeve and will not rotate on its own due to gravity or vibration. The friction damping sleeve is preferably made of polytetrafluoroethylene (PTFE) or copper-based powder metallurgy material, which has the characteristics of wear resistance and stable friction coefficient.

[0101] Alternatively, a disc spring can be installed inside the bearing housing, and the damping magnitude can be changed by adjusting the clamping force of the disc spring.

[0102] The main function of the manual adjustment wheel 33 is to perform coarse tension adjustment. Before the equipment is running, the operator rotates the lever 3304 to make the manual adjustment wheels 33 at each station deflect synchronously, changing the wrap angle of the metal wire at the manual adjustment wheel 33, thereby initially setting the tension of the entire line. During the operation of the equipment, the manual adjustment wheel 33 remains fixed, and the dynamic adjustment of the tension is completed by the automatic adjustment wheel 32.

[0103] Reference Figure 1 , Figure 7 As shown, a winding table 401 is installed at the lower part of the frame 1. The winding table 401 is a flat structure with multiple dual-axis frames 402 on it. The dual-axis frame 402 is a gearbox structure with output shafts extending from both ends. The two output shafts can be rotated synchronously through gear transmission inside.

[0104] In this embodiment of the application, each dual-axis frame 402 has a small shaft drum 4 mounted on each of the two output shafts. The small shaft drum 4 is used to wind up the rewound metal wire.

[0105] It should be noted that each pair of rewinding stations shares a single dual-axis frame 402, meaning that a single dual-axis frame 402 simultaneously drives two small shaft drums 4 to rotate, respectively winding up the metal wires of the two stations.

[0106] In this embodiment of the application, the winding table 401 is slidably mounted on the frame 1;

[0107] Specifically, a slide block 403 is fixedly installed on the frame 1. The slide block 403 is a mounting base arranged in a horizontal direction. A slide rail 404 is installed on the slide block 403. The slide rail 404 extends in a horizontal direction and its extension direction is parallel to the axis of the small shaft drum 4. The bottom of the winding table 401 cooperates with the slide rail 404 so that the winding table 401 can slide back and forth along the slide rail 404.

[0108] In addition, a linear drive motor 405 is installed at one end of the slide block 403. The output shaft of the linear drive motor 405 is connected to the winding table 401 through a screw and nut mechanism to drive the winding table 401 to slide back and forth along the slide rail 404.

[0109] In this embodiment, the linear drive motor 405 is preferably a servo motor with lead screw transmission, and its stroke and speed can be precisely controlled by the control system.

[0110] During the rewinding process, the small shaft drum 4 continuously rotates to wind up the metal wire, while the winding table 401 reciprocates along the slide rail 404 under the drive of the linear drive motor 405, so that the axial position of the metal wire relative to the small shaft drum 4 changes continuously, thereby making the metal wire evenly and layeredly wound on the small shaft drum 4. This transverse winding method makes the winding pitch uniform and the end face of the wire spool neat, effectively avoiding the problem of local accumulation or uneven winding of the metal wire on the small shaft drum 4.

[0111] In addition, the reciprocating motion of the winding table 401 and the rotational motion of the small shaft drum 4 are controlled in conjunction with the control system. The control system calculates the lateral movement speed of the winding table 401 in real time based on the rotational speed of the small shaft drum 4 and the set winding pitch, so as to ensure that the metal wire is evenly distributed at a rate of one wire diameter distance for each rotation of the small shaft drum 4.

[0112] In summary, the working process of the vertical rewinding machine for fine metal wires according to this application is as follows:

[0113] Preparation stage: The operator inputs the target tension value into the control system according to the wire diameter and material of the metal wire to be rewound. The control system automatically calculates the initial extension of the telescopic rod drive 3207 according to the target tension value and drives the slider 3204 to move to the corresponding position, so that the balance spring 3205 establishes the initial preload. At the same time, the operator can rotate the manual shaft 3302 through the lever 3304 to adjust the manual adjustment wheel 33 to an appropriate angle to make coarse adjustments to the tension.

[0114] Threading stage: The metal wire is led out from the main shaft drum 2, passes around the fixed wheel 31, the automatic adjusting wheel 32 and the manual adjusting wheel 33 in sequence, and finally winds onto the small shaft drum 4.

[0115] Start-up and operation phase: When the equipment is started, the output shafts of the main shaft motor 201, the dual-shaft platform 402, and the linear drive motor 405 operate in coordination according to the set program. The metal wire moves continuously under the action of unwinding the main shaft drum 2 and winding the small shaft drum 4, and the automatic response mechanism adjusts the tension in real time.

[0116] Automatic tension adjustment stage: During the rewinding process, when the tension of the metal wire fluctuates, the automatic adjustment wheel 32 drives the swing arm 3203 to swing slightly. After the angle sensor 3206 detects the angle change of the swing arm shaft 3202, it controls the telescopic rod drive 3207 to drive the slider 3204 to move, changing the tension of the balance spring 3205, so that the swing arm 3203 returns to the preset working angle, thus achieving constant tension control.

[0117] Wire winding stage: During the winding process, the linear drive motor 405 drives the winding table 401 to slide back and forth along the slide rail 404, so that the metal wire is evenly wound on the small shaft drum 4.

[0118] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the application. Various changes and modifications can be made without departing from the spirit and scope of this application, and all such changes and modifications fall within the scope of the claims. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A vertical rewinding machine for fine metal wires, comprising a frame (1) and a plurality of rewinding stations disposed on the frame (1), characterized in that, Each of the aforementioned rewinding stations, from top to bottom, includes: Mother shaft drum (2) is used to unwind the pre-processed metal wire; The guide wheel assembly (3) is located below the main shaft drum (2) and is used to reverse the direction and adjust the tension of the metal wire in the rewinding process. It includes an automatic adjustment wheel (32). The small shaft drum (4) is located below the guide wheel assembly (3) and is used to wind up the rewound metal wire; The metal wire passes through the main shaft drum (2) and the guide wheel group (3) in sequence and is then wound into the small shaft drum (4). The frame (1) is provided with a side plate (3201), on which a swing arm shaft (3202) is rotatably mounted, and a swing arm (3203) is fitted on the swing arm shaft (3202). The automatic adjustment wheel (32) is rotatably mounted on one end of the swing arm (3203). An angle sensor (3206) is also installed on the side plate (3201), and one end of the swing arm shaft (3202) is connected to the input shaft of the angle sensor (3206); A slider (3204) is slidably mounted on the side plate (3201), and a telescopic rod drive (3207) is also mounted on the side plate (3201). The drive end of the telescopic rod drive (3207) is connected to the slider (3204) and is used to drive the slider (3204) to slide relative to the side plate (3201). A balance spring (3205) is also installed between the slider (3204) and the other end of the rocker arm (3203) to apply an elastic force to the rocker arm (3203) so that the automatic adjustment wheel (32) keeps pressing against the metal wire; The angle sensor (3206) is electrically connected to the telescopic rod drive (3207). The angle sensor (3206) controls the telescopic rod drive (3207) to drive the slider (3204) to slide according to the detected change in the rotation angle of the swing arm shaft (3202), so as to adjust the tension of the balance spring (3205).

2. The vertical rewinding machine for fine metal wires according to claim 1, characterized in that: The side plate (3201) is provided with a sliding groove, and the slider (3204) is slidably installed in the sliding groove; when the slider (3204) slides towards the end of the swing rod (3203), the balance spring (3205) contracts; when the slider (3204) slides away from the end of the swing rod (3203), the balance spring (3205) stretches.

3. The vertical rewinding machine for fine metal wires according to claim 1, characterized in that: A master shaft motor (201) is provided in the frame (1) at the position corresponding to each master shaft drum (2), and the master shaft drum (2) is mounted on the output shaft of the master shaft motor (201).

4. A vertical rewinding machine for fine metal wires according to claim 1, characterized in that: The guide wheel assembly (3) also includes a fixed wheel (31), which is fixed to the frame (1) by a bracket, and the fixed wheel (31) and the automatic adjustment wheel (32) are offset from each other in the vertical projection direction.

5. A vertical rewinding machine for fine metal wires according to claim 4, characterized in that: A manual adjustment table (3301) is also installed on the frame (1). A manual shaft (3302) is rotatably installed on the manual adjustment table (3301) via a bearing seat. Multiple support frames (3303) are fitted on the manual shaft (3302). The guide wheel assembly (3) also includes a manual adjustment wheel (33), which is mounted on the support frame (3303), and the fixed wheel (31), the automatic adjustment wheel (32) and the manual adjustment wheel (33) are arranged from top to bottom in sequence; A lever (3304) is also installed at one end of the manual shaft (3302), and the manual shaft (3302) and the bearing seat maintain a damped rotational connection.

6. A vertical rewinding machine for fine metal wires according to claim 1, characterized in that: A slide (403) is also fixedly installed on the frame (1). A winding table (401) is slidably installed on the slide (403). Multiple dual-axis frames (402) are provided on the winding table (401). Small shaft drums (4) are fitted on the two output shafts of each dual-axis frame (402). In this case, every two of the rewinding stations share one of the dual-axis test benches (402).

7. A vertical rewinding machine for fine metal wires according to claim 6, characterized in that: The slide block (403) is equipped with a slide rail (404), and the winding table (401) is slidably mounted on the slide block (403) via the slide rail (404).

8. A vertical rewinding machine for fine metal wires according to claim 7, characterized in that: A linear drive motor (405) is also installed at one end of the slide block (403). The output shaft of the linear drive motor (405) is connected to the winding table (401) to drive the winding table (401) to slide back and forth along the slide rail (404).

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