An automated voice coil winding apparatus

Abstract

This utility model belongs to the field of electroacoustic device manufacturing technology, and particularly relates to an automated winding device for speaker voice coils, comprising: a support base, wherein a plurality of guide rollers are installed inside the support base, and the guide rollers have through holes along their axes, through which a rotating shaft passes, and the two ends of the rotating shaft are movably connected to the support base; a wire storage device and a winding section are respectively disposed on both sides of the support base. This utility model uses a motor-driven lead screw to drive the wire ring to reciprocate at a uniform speed along the axial direction of the take-up drum, which can control the arrangement trajectory of the wire along the axial direction of the take-up drum, so that the wire can be evenly wound on the surface of the take-up drum according to a preset path, avoiding the problem of concentrated accumulation or sparse distribution of wire in traditional winding processes, and ensuring that the winding density of wire is consistent in all areas along the axial direction of the take-up drum.

Description

Technical Field

[0001] This utility model belongs to the field of electroacoustic device manufacturing technology, and in particular relates to an automated winding device for speaker voice coils. Background Technology

[0002] In the production of precision components such as speaker voice coils, the uniform distribution of wire on the take-up spool is a key factor determining product performance and consistency. Uneven wire distribution directly leads to deviations in voice coil resistance and imbalances in magnetic field distribution, severely affecting sound quality and even causing product failure.

[0003] In the prior art, Chinese Patent Publication No. CN 207766550 U provides a voice coil winding device that facilitates fixation. It achieves rapid fixation of the winding drum through a structure of a sliding groove, a slider, a nut, and a lead screw, solving the problem of inconvenient installation and disassembly of the winding drum and improving operational efficiency to some extent. However, this device has significant shortcomings in addressing the core issue of uniform wire distribution. Its guide structure is fixed and cannot adapt to dynamic tension changes during wire transport. The internal stress accumulated during the initial winding process cannot be released, easily leading to localized over-tightness or under-tightness due to tension fluctuations during winding, resulting in uneven wire distribution on the winding drum. Furthermore, the coordination between the guide components and the winding drum is insufficient; there is no adaptive drive and guide linkage mechanism that adjusts with changes in the drum diameter. When the drum diameter increases due to increased winding, the axial spacing of the wire becomes difficult to maintain, further exacerbating the uneven distribution.

[0004] It is evident that while existing technologies have made improvements in auxiliary functions such as spool fixing, they have not yet formed a systematic solution for the core requirement of uniform wire distribution, encompassing tension stability, motion coordination, and wire protection. There is an urgent need for an automated wire winding device that can specifically overcome these limitations. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing an automated winding device for speaker voice coils.

[0006] In view of this, the present invention provides an automated winding device for speaker voice coils, comprising:

[0007] A support base, wherein a plurality of guide rollers are installed inside the support base, and the guide rollers have through holes along their axes, and a rotating shaft passes through the through holes, with both ends of the rotating shaft being movably connected to the support base;

[0008] The wire storage device and the winding section are respectively located on both sides of the support base;

[0009] The winding section includes a mounting frame and a take-up device. The take-up device is mounted on the mounting frame and includes a take-up drum, a drive device, and a guide ring. The take-up drum is driven by the drive device. The guide ring is located on one side of the take-up drum, and the bottom of the guide ring is connected to a lead screw. The lead screw is driven by a motor to drive the guide ring to reciprocate along the axial direction of the take-up drum.

[0010] Preferably, the guide roller is divided into an upper guide roller and a lower guide roller, and the upper guide roller and the lower guide roller are staggered in the vertical direction along the wire conveying direction.

[0011] Preferably, a ball bearing is provided in the through hole, and the inner ring of the ball bearing is in contact with the outer circumferential surface of the rotating shaft.

[0012] Preferably, the guide roller is provided with blocking parts at both ends, the width of the blocking parts is greater than that of the guide roller, the guide roller moves within the support base via a rotating shaft, and the support base is provided with blocks on both sides of its inner surface, the blocks being connected to both ends of the rotating shaft.

[0013] Preferably, the driving device includes a fixed frame and a rotating roller, the rotating roller is installed inside the fixed frame and abuts against the end of the take-up drum; the fixed frame is provided with a telescopic component on the side away from the rotating roller, the telescopic component includes a movable rod and a spring, the spring is sleeved on the movable rod, one end of the movable rod abuts against the fixed frame, and the other end of the movable rod is fixed to the mounting frame.

[0014] Preferably, the motor drives the rotating roller to move through a transmission assembly, the transmission assembly including pulleys and a transmission belt, the two pulleys being respectively connected to the output shaft of the motor and the rotating roller, and the transmission belt being connected to the two pulleys in a transmission connection.

[0015] Preferably, the wire storage device includes a reel and a support arm, the reel being movably mounted on the support arm, the reel being cylindrical to carry the wire, and the reel releasing the wire by rotation.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes a movable structure between the guide roller and the rotating shaft, allowing the guide roller to move flexibly along the rotating shaft. During wire conveying, it adapts to changes in wire tension, effectively buffering tension fluctuations and preventing wire deviation or uneven winding caused by sudden local tension changes. This provides a stable conveying posture for the wire entering the winding section, laying the foundation for uniform winding. In the winding section, the transmission between the guide ring and the lead screw, driven by a motor, causes the guide ring to reciprocate at a uniform speed along the axial direction of the take-up drum. This controls the wire's axial distribution trajectory on the take-up drum, ensuring the wire is evenly wound onto the surface of the take-up drum along a preset path. This avoids the problems of concentrated accumulation or sparse distribution of wire during traditional winding processes, ensuring consistent winding density across all areas of the take-up drum. The guiding action of the guide roller and the axial reciprocating motion of the guide ring work synergistically. The former ensures straightness and tension stability during wire conveying, while the latter controls the axial distribution position of the wire on the take-up drum. Together, they create a regular and tight winding structure on the take-up drum, significantly improving winding uniformity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the device according to this utility model;

[0019] Figure 2 This is a top view of the wire take-up device and support base of this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the support base of this utility model;

[0021] Figure 4 This is a schematic diagram of the motor drive component of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the guide roller of this utility model.

[0023] The markings in the diagram are as follows:

[0024] 1. Support base; 2. Guide roller; 3. Upper guide roller; 4. Lower guide roller; 5. Through hole; 6. Rotating shaft; 7. Winding section; 8. Mounting frame; 9. Take-up device; 10. Take-up drum; 11. Drive device; 12. Wire guide ring; 13. Lead screw; 14. Motor; 23. Wire storage device; 24. Reel; 25. Support arm; 26. Ball bearing; 27. Blocking part; 28. Stop block; 29. ​​Fixed frame; 30. Rotating roller; 31. Telescopic assembly; 32. Movable rod; 33. Spring; 34. Transmission assembly; 35. Pulley; 36. Transmission belt; 37. Base. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0029] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0030] like Figures 1-5 As shown, an automated winding device for speaker voice coils includes:

[0031] A support base 1 is provided, and a plurality of guide rollers 2 are installed inside the support base 1. Each guide roller 2 has a through hole 5 along its axis. A rotating shaft 6 passes through the through hole 5. Both ends of the rotating shaft 6 are movably connected to the support base 1. During the conveying of the wire, the guide roller 2 can move along the rotating shaft 6.

[0032] The wire storage device 23 and the winding section 7 are respectively disposed on both sides of the support base 1;

[0033] The winding section 7 includes a mounting frame 8 and a take-up device 9. The take-up device 9 is mounted on the mounting frame 8 and includes a take-up drum 10, a drive device 11, and a guide ring 12. The drive device 11 is located on the rear side of the take-up drum 10. The guide ring 12 is mounted on one side of the take-up drum 10, and the bottom of the guide ring 12 is connected to the lead screw 13 for transmission. The lead screw 13 is driven by a motor 14 to drive the guide ring 12 to reciprocate at a uniform speed along the axial direction of the take-up drum 10. The bottom of the guide ring 12 is slidably connected to the top of the mounting frame 8 through a slider.

[0034] This invention utilizes a movable structure between the guide roller and the rotating shaft, allowing the guide roller to move flexibly along the rotating shaft. During wire conveying, it adapts to changes in wire tension, effectively buffering tension fluctuations and preventing wire deviation or uneven winding caused by sudden local tension changes. This provides a stable conveying posture for the wire entering the winding section, laying the foundation for uniform winding. In the winding section, the transmission between the guide ring and the lead screw, driven by a motor, causes the guide ring to reciprocate at a uniform speed along the axial direction of the take-up drum. This controls the wire's axial distribution trajectory on the take-up drum, ensuring the wire is evenly wound onto the surface of the take-up drum along a preset path. This avoids the problems of concentrated accumulation or sparse distribution of wire during traditional winding processes, ensuring consistent winding density across all areas of the take-up drum. The guiding action of the guide roller and the axial reciprocating motion of the guide ring work synergistically. The former ensures straightness and tension stability during wire conveying, while the latter controls the axial distribution position of the wire on the take-up drum. Together, they create a regular and tight winding structure on the take-up drum, significantly improving winding uniformity.

[0035] As a preferred example of this application, the guide roller 2 is divided into an upper guide roller 3 and a lower guide roller 4, which are vertically offset along the wire conveying direction. This offset guiding path can promote longitudinal stretching of the wire, effectively release the internal stress formed in the early winding, and make the tension evenly distributed along the length of the wire; at the same time, the offset constraint of the upper and lower rollers can suppress the shaking caused by sudden tension changes during wire conveying, ensuring that the tension of the wire is stable when it enters the take-up drum 10, providing a basic guarantee for winding uniformity.

[0036] As a preferred example of this application, a ball bearing 26 is fitted inside the through hole 5, which makes contact with the outer circumferential surface of the rotating shaft 6. The ball bearing 26 converts the sliding friction between the guide roller 2 and the rotating shaft 6 into rolling friction, significantly reducing the resistance to their relative movement. This allows the guide roller 2 to respond flexibly to changes in wire tension, avoiding jamming or sluggish movement. At the same time, the ball bearing 26 ensures the straightness of the guide roller 2's axial movement along the rotating shaft 6, ensuring that its axial displacement range is precisely matched with the length of the take-up drum 10, thereby controlling the winding trajectory of the wire on the take-up drum 10 and improving winding uniformity.

[0037] As a preferred example of this application, the guide roller 2 has blocking portions 27 at both ends, the width of which is greater than that of the guide roller 2. The guide roller 2 is movably mounted on the support base 1 via a rotating shaft 6. Blocks 28 are provided on both sides of the inner surface of the support base 1, and the blocks 28 are connected to both ends of the rotating shaft 6. When the guide roller 2 moves axially, the blocking portions 27 abut against the blocks 28 to limit its axial displacement range. The length of the guide roller 2 is slightly longer than the length of the take-up drum 10, and its axial displacement range matches the axial length of the take-up drum 10. This structure can prevent the guide roller 2 from moving excessively, causing the wire to wind beyond the axial boundary of the take-up drum 10, thus preventing the wire from falling off. Simultaneously, the width of the guide roller 2 is less than the axial length of the take-up drum 10, and its displacement range is suitable, allowing the wire to reciprocate within the full width range of the take-up drum 10. This solves the problem of localized concentrated winding of the wire in traditional devices, ensuring uniform arrangement and improving wire capacity and winding quality.

[0038] As a preferred example of this application, the drive device 11 includes a fixed frame 29 and a rotating roller 30. The rotating roller 30 is installed inside the fixed frame 29 and abuts against the end of the take-up drum 10. A telescopic component 31 is provided on the side of the fixed frame 29 away from the rotating roller 30. The telescopic component 31 includes a movable rod 32 and a spring 33. The spring 33 is sleeved on the movable rod 32. One end of the movable rod 32 abuts against the fixed frame 29, and the other end is fixed to the mounting frame 8. The telescopic component 31 uses the elastic force of the spring 33 to push the movable rod 32 against the fixed frame 29, ensuring that the rotating roller 30 is in close contact with the take-up drum 10, forming a stable frictional force to reliably transmit power and avoid transmission slippage. During the take-up process, the diameter of the take-up drum 10 increases with the increase of the winding amount. The spring 33 can adaptively adjust the position of the fixed frame 29 by telescopically driving the movable rod 32 to compensate for the distance difference of the diameter change, maintain stable contact pressure, ensure uniform take-up speed, and promote uniform winding of the wire. At the same time, this structure can adapt to the initial diameter error or slight specification difference of the take-up drum 10, enhancing the adaptability of the equipment.

[0039] As a preferred example of this application, the motor 14 drives the rotating roller 30 to move through the transmission assembly 34. The transmission assembly 34 includes pulleys 35 and a transmission belt 36. The two pulleys 35 are respectively connected to the output shaft of the motor 14 and the rotating roller 30. The transmission belt 36 is connected to the two pulleys 35. The transmission assembly 34 can stably transmit the output torque of the motor 14 to the rotating roller 30, ensuring that its rotation speed is uniform, realizing the synchronous movement of the guide roller 2 and the take-up drum 10, and ensuring that the wire is evenly collected on the take-up drum 10.

[0040] The wire storage device 23 includes a reel 24 and a support arm 25. The reel 24 is movably mounted on the support arm 25 and is cylindrical to carry the wire. The wire can be released by rotation. The support arm 25 is fixed on the base 37, which is set on the mounting frame 8. The reel 24 makes the wire form a regular ring arrangement when it is wound. When released, it is loosened in an orderly manner by smooth rotation, ensuring that the wire is evenly distributed on the take-up drum 10.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An automated voice coil winding apparatus for a loudspeaker, comprising: include: A support base (1) is provided, and a number of guide rollers (2) are installed inside the support base (1). The guide rollers (2) have through holes (5) along their axes. A rotating shaft (6) is inserted through the through holes (5). The two ends of the rotating shaft (6) are movably connected to the support base (1). The wire storage device (23) and the winding section (7) are respectively arranged on both sides of the support base (1); The winding section (7) includes a mounting frame (8) and a take-up device (9). The take-up device (9) is mounted on the mounting frame (8) and includes a take-up drum (10), a drive device (11), and a guide ring (12). The take-up drum (10) is driven by the drive device (11). The guide ring (12) is located on one side of the take-up drum (10), and the bottom of the guide ring (12) is connected to the lead screw (13). The lead screw (13) is driven by a motor (14) to drive the guide ring (12) to reciprocate along the axial direction of the take-up drum (10).

2. The automated coil winding apparatus for a loudspeaker voice coil of claim 1, wherein, The guide roller (2) is divided into an upper guide roller (3) and a lower guide roller (4), and the upper guide roller (3) and the lower guide roller (4) are staggered in the vertical direction along the wire conveying direction.

3. The automated coil winding apparatus for a loudspeaker voice coil of claim 2, wherein, A ball bearing (26) is provided in the through hole (5), and the inner ring of the ball bearing (26) is in contact with the outer circumferential surface of the rotating shaft (6).

4. The automated coil winding apparatus for a loudspeaker voice coil of claim 3, wherein, The guide roller (2) has blocking parts (27) at both ends. The width of the blocking parts (27) is greater than that of the guide roller (2). The guide roller (2) moves within the support base (1) via a rotating shaft (6). Both sides of the inner surface of the support base (1) are provided with stop blocks (28). The stop blocks (28) are connected to both ends of the rotating shaft (6).

5. The automated coil winding apparatus for a loudspeaker voice coil of claim 1, wherein, The drive device (11) includes a fixed frame (29) and a rotating roller (30). The rotating roller (30) is installed inside the fixed frame (29) and abuts against the end of the take-up drum (10). The fixed frame (29) has a telescopic component (31) on the side away from the rotating roller (30). The telescopic component (31) includes a movable rod (32) and a spring (33). The spring (33) is sleeved on the movable rod (32). One end of the movable rod (32) abuts against the fixed frame (29), and the other end of the movable rod (32) is fixed to the mounting frame (8).

6. The automated coil winding apparatus for a loudspeaker voice coil of claim 5, wherein, The motor (14) drives the rotating roller (30) to move through the transmission assembly (34). The transmission assembly (34) includes pulleys (35) and a transmission belt (36). The two pulleys (35) are respectively connected to the output shaft of the motor (14) and the rotating roller (30). The transmission belt (36) is connected to the two pulleys (35) in a transmission connection.

7. The automated coil winding apparatus for a loudspeaker voice coil of claim 1, wherein, The wire storage device (23) includes a reel (24) and a support arm (25). The reel (24) is movably mounted on the support arm (25). The reel (24) is cylindrical to carry the wire, and the reel (24) releases the wire by rotation.

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