A multi-wire parallel winding device

Abstract

The present application relates to the technical field of sound equipment, and particularly relates to a multi-line parallel winding device, which comprises a base, a first fixing tool, a winding disc, a fixing disc and a first rotating shaft, a second fixing tool, a second fixing seat, a second rotating shaft and a limiting shaft core, the second fixing seat is fixedly arranged on the base, the second rotating shaft is rotationally connected to the second fixing seat on the side facing the first fixing seat, the limiting shaft core is detachably connected with the second rotating shaft, and the second rotating shaft is coaxially arranged with the first rotating shaft, and a winding assembly, the winding assembly comprises a first moving arm, a broken line arm and a wire passing clamp, the first moving arm is arranged on the base, and the broken line arm and the wire passing clamp are arranged on the first moving arm at the end close to the base. The present application realizes automatic constraint and seamless switching of the wire end after the wire is broken, realizes continuous automatic production of double-line parallel winding, realizes differentiated tension control of copper wire and aluminum wire, and significantly improves the wire arrangement neatness and product consistency of double-line parallel winding.

Description

Technical Field

[0001] This invention relates to the field of audio equipment technology, and in particular to a multi-wire winding device. Background Technology

[0002] The voice coil is a core component of electroacoustic devices such as loudspeakers and audio equipment. Its basic structure consists of enameled wire wound around a cylindrical voice coil frame with a certain number of turns and layers. The performance of the voice coil directly determines the sensitivity of the electroacoustic device. In recent years, the industry has begun to adopt a process of winding copper and aluminum wires together, utilizing the high conductivity of copper wire and the low density of aluminum wire to reduce the weight of the voice coil while ensuring electrical performance and improving the transient response of the loudspeaker.

[0003] However, existing winding devices face technical challenges in continuous production. After completing a single voice coil, existing devices require cutting the wire and re-fixing the wire end to the starting position of the winding fixture before winding the next product. This process often necessitates manual intervention by operators for threading and fixing, affecting the continuity and efficiency of automated production. Furthermore, the copper and aluminum wires are subjected to the same tension during winding, leading to excessive stretching of the aluminum wire and insufficient tension in the copper wire. The alignment accuracy between the winding fixture and the fixing plate directly affects the starting position of the voice coil winding and the neatness of the coil turns. Existing devices suffer from low alignment accuracy, repeated positioning deviations, and large tolerances in the voice coil's inner diameter.

[0004] Therefore, there is a need for a multi-wire winding device that can achieve continuous production with high precision and independent control of both copper and aluminum wires. Summary of the Invention

[0005] The main objective of this invention is to provide a multi-wire winding device that addresses the problems of continuous production difficulties, low production precision, and difficulty in independently controlling the tension of copper and aluminum wires in existing technologies.

[0006] To achieve the above objectives, the present invention proposes a multi-wire winding device, comprising:

[0007] Base;

[0008] A first fixing fixture is disposed on the base. The first fixing fixture includes a first fixing seat, a winding reel, a fixing plate, and a first rotating shaft. The first fixing seat is fixedly disposed on the base. The first rotating shaft is rotatably connected to the first fixing seat. The winding reel and the fixing plate are sequentially sleeved on the first rotating shaft. The winding reel, the fixing plate, and the first rotating shaft are coaxially connected. The first rotating shaft is rotatably connected to the base. The axis of the first rotating shaft is parallel to the length direction of the base.

[0009] The second fixing fixture includes a second fixing seat, a second rotating shaft, and a limiting shaft core. The second fixing seat is fixedly disposed on the base. The second rotating shaft is rotatably connected to the second fixing seat on a side facing the first fixing seat. The limiting shaft core is fixedly connected to the second rotating shaft, and the second rotating shaft and the first rotating shaft are coaxially disposed.

[0010] A winding assembly, comprising a first moving arm, a wire breaking arm, and a wire guide clamp, wherein the first moving arm is disposed on the base, and the wire breaking arm and the wire guide clamp are disposed on one end of the first moving arm near the base.

[0011] Preferably, the first moving arm includes a fixed frame, a first slide rail, and a first moving component. The fixed frame is fixedly disposed on the base, the first slide rail is fixedly disposed on the fixed frame on the side near the first fixed fixture, and the axis of the first slide rail is parallel to the first fixed fixture. The first moving component is slidably disposed along the length direction of the first slide rail.

[0012] Preferably, the thread-breaking arm includes a swing arm, a third rotating shaft, and a thread-breaking needle. The third rotating shaft is rotatably connected to the first moving member on the side near the base, and the axis of the third rotating shaft is parallel to the first rotating shaft. The swing arm is fixedly disposed at one end of the third rotating shaft. The third rotating shaft drives the swing arm to rotate relative to the first moving member. The thread-breaking needle is fixedly disposed on the swing arm on the side facing the first fixed fixture.

[0013] Preferably, the winding reel has a first notch and a second notch, which are symmetrically arranged around the circumference of the winding reel.

[0014] Preferably, the fixing plate is provided with a third notch, and the third notch is provided with at least a first wire guide groove and a second wire guide groove, the first wire guide groove and the second wire guide groove are spaced apart, and the groove depth of the first wire guide groove is greater than that of the second wire guide groove.

[0015] Preferably, the fixing plate is further provided with a fourth notch, which is located on the side of the fixing plate away from the third notch, and the fourth notch is a serrated notch.

[0016] Preferably, the multi-wire winding device further includes a part ejection assembly, which includes a push arm and a part ejection drive. The part ejection drive is disposed on the base, and the push arm is disposed on the part ejection drive on the side facing the second fixing fixture.

[0017] Preferably, the first fixing fixture further includes a fixing rod, a first fixing member, and a limiting member. The first fixing member is disposed on the first fixing seat via the fixing rod. The first fixing member is disposed corresponding to the first rotating shaft. The first fixing member has a U-shaped structure. There are multiple limiting members, and the multiple limiting members abut against the first rotating shaft.

[0018] This invention enables automatic constraint and seamless switching of wire ends after wire breakage, allowing for continuous automated production of dual-wire parallel winding and achieving differentiated tension control between copper and aluminum wires. It improves the docking accuracy and repeatability of the fixed fixture and fixed plate, ensures the consistency of the winding start position and the accuracy of the voice coil size, and significantly enhances the neatness of the wire arrangement and product consistency of dual-wire parallel winding. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the processes shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a multi-wire winding device provided in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 This is a schematic diagram of the structure of a wire break arm provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a first fixing base provided in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 A magnified structural diagram at point B in the middle.

[0025] Explanation of icon numbers:

[0026] Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0030] Understandably, with the development of high-fidelity audio systems and high-power car speakers, higher demands are placed on the conductivity, heat dissipation, and vibration quality of voice coils. Traditional voice coils are mostly wound with a single copper wire or a single aluminum wire. Pure copper voice coils have high conductivity but are relatively heavy, affecting high-frequency response; pure aluminum voice coils are lightweight but have high resistivity and poor solderability. To address this, the industry has developed copper-aluminum composite voice coil technology, utilizing copper wire to carry the main current-carrying function and aluminum wire to assist in heat dissipation and reduce moving mass, thus balancing electrical and acoustic performance. However, copper and aluminum wires have significant differences in elastic modulus, yield strength, and creep characteristics. If they are wound with uniform tension, the elongation of aluminum wire is significantly greater than that of copper wire, leading to uneven interlayer spacing and poor voice coil resistance consistency after winding.

[0031] Based on this, this application provides a multi-wire winding device 1000, referring to... Figures 1-5 As shown, it includes:

[0032] Base 100; First fixing fixture 200, the first fixing fixture 200 is disposed on the base 100, the first fixing fixture 200 includes a first fixing seat 210, a winding reel 220, a fixing plate 230 and a first rotating shaft 240, the first fixing seat 210 is fixedly disposed on the base 100, the first rotating shaft 240 is rotatably connected to the first fixing seat 210, the winding reel 220 and the fixing plate 230 are sequentially sleeved on the first rotating shaft 240, the winding reel 220 is coaxially connected with the fixing plate 230 and the first rotating shaft 240, the first rotating shaft 240 is rotatably connected to the base 100, and the axis of the first rotating shaft 240 is parallel to the length direction of the base 100; Second fixing fixture 300, the second The fixed fixture 300 includes a second fixed seat 310, a second rotating shaft 320, and a limiting shaft core 330. The second fixed seat 310 is fixedly disposed on the base 100. The second rotating shaft 320 is rotatably connected to the second fixed seat 310 on the side facing the first fixed seat 210. The limiting shaft core 330 is detachably connected to the second rotating shaft 320, and the second rotating shaft 320 and the first rotating shaft 240 are coaxially disposed. The winding assembly 400 includes a first moving arm 410, a wire breaking arm 420, and a wire passing clamp 430. The first moving arm 410 is disposed on the base 100, and the wire breaking arm 420 and the wire passing clamp 430 are disposed on the first moving arm 410 at one end near the base 100.

[0033] It is understood that the multi-wire winding device 1000 also includes a controller and a control panel. The controller is electrically and signal connected to other components in the device and has a built-in control program. The control panel is electrically connected to the controller. The operator can control the controller by interacting with the control panel, thereby controlling the movement state of each component of the multi-wire winding device 1000. In this embodiment, when voice coils need to be produced, the operator first arranges copper wire and aluminum wire side by side and fixes them to the winding reel 220 through the wire clamp 430. The winding reel 220 rotates through the built-in program of the controller, and then controls the wire clamp 430 to drive the copper wire and aluminum wire to move along the axial direction of the first rotating shaft 240 to the fixed plate 230. At this time, the second rotating shaft 320 in the second fixed fixture 300 drives the limiting shaft core 330 to move toward the fixed plate 230 until the limiting shaft core 330 abuts against the top surface of the fixed plate 230 (i.e., the side of the fixed plate 230 away from the fixed plate 230). At this time, a winding station with two ends limited is formed between the fixed plate 230 and the limiting shaft core 330. The range of the winding station is the length of the voice coil, and the outer diameter of the limiting shaft core 330 is the inner diameter of the voice coil. The operator can produce voice coils of different specifications by changing the limiting shaft core 330. When winding begins, the first rotating shaft 240 and the second rotating shaft 320 rotate in the same direction and at the same frequency. The first moving arm 410 drives the wire guide clamp 430 to move back and forth at the winding station, so that the copper wire and aluminum wire are wound together at the limiting shaft core 330. After the winding is completed, the first moving arm 410 drives the wire guide clamp 430 back to the side of the winding disc 220 away from the fixed disc 230. At this time, there are two sets of copper and aluminum wire groups symmetrically arranged at 180° on the wire guide clamp 430. After the winding is completed, the fixed disc 230 corresponding to the wire guide clamp 430 and the winding disc 220 are on opposite sides of the 180° opposite position of the initial station. Then, the wire cutting arm 420 cuts one of the copper and aluminum wire groups. At this time, there is still one set of copper and aluminum wire groups on the wire guide clamp 430, which can be wound together again.

[0034] In one embodiment, the first moving arm 410 includes a fixed frame 411, a first slide rail 412, and a first moving member 413. The fixed frame 411 is fixedly disposed on the base 100. The first slide rail 412 is fixedly disposed on the fixed frame 411 on the side close to the first fixed fixture 200, and the axis of the first slide rail 412 is parallel to the first fixed fixture 200. The first moving member 413 is slidably disposed along the length direction of the first slide rail 412.

[0035] In this embodiment, the fixing frame 411 is fixedly mounted on the base 100. The first slide rail 412 is parallel to the axis of the first rotating shaft 240 and is mounted on the fixing frame 411 near the first rotating shaft 240. The first moving component 413 is slidably mounted on the first slide rail 412. It is understood that the first slide rail 412 is also connected to a drive motor, which drives the first moving component 413 to move relative to the first slide rail 412. The controller is signal-connected to the drive motor, and the operator controls the power of the drive motor through the control panel to ensure the working accuracy during each copper-aluminum wire co-winding.

[0036] In one embodiment, the thread-breaking arm 420 includes a swing arm 421, a third rotating shaft 422, and a thread-breaking needle 423. The third rotating shaft 422 is rotatably connected to the first moving member 413 on the side near the base 100, and the axis of the third rotating shaft 422 is parallel to the first rotating shaft 240. The swing arm 421 is fixedly disposed on one end of the third rotating shaft 422. The third rotating shaft 422 drives the swing arm 421 to rotate relative to the first moving member 413. The thread-breaking needle 423 is fixedly disposed on the swing arm 421 on the side facing the first fixed fixture 200.

[0037] In this embodiment, the bottom side of the first moving member 413 has a downward-facing slot, and a driving member corresponding to the third rotating shaft 422 is provided in the slot. The driving member can be connected to the driving motor provided on the first slide rail 412. When the first moving member 413 drives the wire clamp 430 to complete the voice coil winding and return to the initial position, the driving motor drives the third rotating shaft 422 to swing. The third rotating shaft 422 drives the swing arm 421 to move toward the voice coil, and cuts one of the copper and aluminum wire groups on the voice coil through the fixed wire-cutting needle 423 to complete the voice coil forming.

[0038] In one embodiment, the winding reel 220 is provided with a first notch 221 and a second notch 222, which are symmetrically arranged around the circumference of the winding reel 220.

[0039] In this embodiment, before winding, the operator connects the copper-aluminum wire bundle to the winding reel 220 via the wire clamp 430, passing it around the first notch 221. When winding begins, the winding reel 220 rotates 180°, and the wire clamp 430 moves the copper-aluminum wire bundle from the second notch 222 to one end near the second rotating shaft 320. This allows production to continue even when one set of copper-aluminum wire bundles is cut by the wire-breaking needle 423, enhancing continuous production capacity.

[0040] In one embodiment, the fixed disk 230 is provided with a third notch 231. The third notch 231 is provided with at least a first wire passing groove 231A and a second wire passing groove 231B. The first wire passing groove 231A and the second wire passing groove 231B are spaced apart. The groove depth of the first wire passing groove 231A is greater than that of the second wire passing groove 231B.

[0041] In this embodiment, at the start of the winding process, the wire clamp 430 first moves from the second notch 222 to the third notch 231 at the fixed plate 230. It is understood that the tension required for winding copper wire and aluminum wire is different. Therefore, the present invention achieves independent tension control of copper wire and aluminum wire by allowing aluminum wire to pass through the first wire groove 231A with a larger groove depth and copper wire to pass through the second wire groove 231B with a shallower groove depth.

[0042] In one embodiment, the fixed disk 230 is further provided with a fourth notch 232, which is located on the fixed disk 230 on a side away from the third notch 231, and the fourth notch 232 is a serrated notch.

[0043] In this embodiment, when the winding process is completed, the wire clamp 430 moves the copper-aluminum wire group from the fourth notch 232 to the first notch 221. The serrated notch at the fourth notch 232 separates the copper wire and aluminum wire in the copper-aluminum wire group and also ensures the stability of the copper wire and aluminum wire when they are cut by the wire-cutting needle 423.

[0044] In one embodiment, the multi-wire winding device 1000 further includes a part ejection assembly 500, which includes a push arm 510 and a part ejection drive 520. The part ejection drive 520 is disposed on the base 100, and the push arm 510 is disposed on the part ejection drive 520 on the side facing the second fixing fixture 300.

[0045] In this embodiment, the ejection assembly 500 further includes an ejection frame, which is disposed between the fixed frame 411 and the second fixed fixture 300. A push arm 510 is slidably disposed on the ejection frame. An ejection drive 520 is provided at the other end of the ejection frame. The ejection drive 520 drives the push arm 510 to move perpendicularly to the axis of the first rotating shaft 240. When the voice coil winding is completed, the second rotating shaft 320 drives the limiting shaft core 330 away from the fixed plate 230. Simultaneously, the wire-cutting needle 423 cuts the copper and aluminum wire assembly. The push arm 510 pushes down the voice coil that is movably attached to the limiting shaft core 330, completing the ejection. It is understood that the end of the push arm 510 can be bolted with a flexible material component, including but not limited to silicone and rubber, to protect the integrity of the voice coil.

[0046] In one embodiment, the first fixing fixture 200 further includes a fixing rod 250, a first fixing member 260, and a limiting member 270. The first fixing member 260 is disposed on the first fixing seat 210 via the fixing rod 250. The first fixing member 260 is disposed corresponding to the first rotating shaft 240. The first fixing member 260 has a U-shaped structure. There are multiple limiting members 270, and the multiple limiting members 270 abut against the first rotating shaft 240.

[0047] In this embodiment, the fixing rod 250 is disposed vertically below the first rotating shaft 240, and can fix the first fixing member 260 along the length direction of the first rotating shaft 240. The first fixing member 260 is U-shaped and surrounds at least half of the circumference of the first rotating shaft 240. At least two limiting members 270 are provided on the inner side of the first fixing member 260, and at least two limiting members 270 are arranged opposite to each other. The limiting members 270 are used to ensure that the first rotating shaft 240 does not deviate from its axis or vibrate during rotation. The limiting members 270 are detachably connected to the first fixing member 260.

[0048] This invention achieves automatic constraint and seamless switching of wire ends after wire breakage, enabling continuous automated production of dual-wire parallel winding and realizing differentiated tension control of copper and aluminum wires. It improves the docking accuracy and repeatability of the fixed fixture and fixed plate, ensuring the consistency of the winding start position and the accuracy of the voice coil size. It significantly improves the neatness of the wire arrangement and product consistency of dual-wire parallel winding. It also realizes the automatic ejection and unloading of the voice coil after winding, further improving the automation level and production efficiency of the device. This device has high space utilization, compact structure, clear action sequence of each component, strict interlocking logic, and is easy to operate and maintain. It can flexibly adapt to different specifications of voice coil skeletons and wire diameter combinations, and has good versatility and industrial application prospects.

[0049] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A multi-wire winding device, characterized in that, include: Base; A first fixing fixture is disposed on the base. The first fixing fixture includes a first fixing seat, a winding reel, a fixing plate, and a first rotating shaft. The first fixing seat is fixedly disposed on the base. The first rotating shaft is rotatably connected to the first fixing seat. The winding reel and the fixing plate are sequentially sleeved on the first rotating shaft. The winding reel, the fixing plate, and the first rotating shaft are coaxially connected. The first rotating shaft is rotatably connected to the base. The axis of the first rotating shaft is parallel to the length direction of the base. The second fixing fixture includes a second fixing seat, a second rotating shaft, and a limiting shaft core. The second fixing seat is fixedly disposed on the base. The second rotating shaft is rotatably connected to the second fixing seat on a side facing the first fixing seat. The limiting shaft core is detachably connected to the second rotating shaft, and the second rotating shaft is coaxial with the first rotating shaft. A winding assembly, comprising a first moving arm, a wire breaking arm, and a wire guide clamp, wherein the first moving arm is disposed on the base, and the wire breaking arm and the wire guide clamp are disposed on one end of the first moving arm near the base.

2. The multi-wire winding device as described in claim 1, characterized in that, The first moving arm includes a fixed frame, a first slide rail, and a first moving component. The fixed frame is fixedly disposed on the base. The first slide rail is fixedly disposed on the fixed frame on the side close to the first fixed fixture, and the axis of the first slide rail is parallel to the first fixed fixture. The first moving component is slidably disposed along the length direction of the first slide rail.

3. The multi-wire winding device as described in claim 2, characterized in that, The thread-breaking arm includes a swing arm, a third rotating shaft, and a thread-breaking needle. The third rotating shaft is rotatably connected to the first moving part on the side near the base, and the axis of the third rotating shaft is parallel to the first rotating shaft. The swing arm is fixedly disposed at one end of the third rotating shaft. The third rotating shaft drives the swing arm to rotate relative to the first moving part. The thread-breaking needle is fixedly disposed on the swing arm on the side facing the first fixed fixture.

4. The multi-wire winding device as described in claim 1, characterized in that, The winding reel has a first notch and a second notch, which are symmetrically arranged around the circumference of the winding reel.

5. The multi-wire winding device as described in claim 4, characterized in that, The fixed plate is provided with a third notch, and the third notch is provided with at least a first wire guide groove and a second wire guide groove. The first wire guide groove and the second wire guide groove are spaced apart, and the groove depth of the first wire guide groove is greater than that of the second wire guide groove.

6. The multi-wire winding device as described in claim 5, characterized in that, The fixing plate is also provided with a fourth notch, which is located on the side of the fixing plate away from the third notch, and the fourth notch is a serrated notch.

7. The multi-wire winding device as described in claim 1, characterized in that, The multi-wire winding device further includes a part ejection assembly, which includes a push arm and a part ejection drive. The part ejection drive is disposed on the base, and the push arm is disposed on the part ejection drive on the side facing the second fixing fixture.

8. The multi-wire winding device as described in claim 1, characterized in that, The first fixing fixture further includes a fixing rod, a first fixing member, and a limiting member. The first fixing member is disposed on the first fixing seat via the fixing rod. The first fixing member is disposed corresponding to the first rotating shaft. The first fixing member has a U-shaped structure. There are multiple limiting members, and the multiple limiting members abut against the first rotating shaft.

Images