Earphone loudspeaker high-precision installation positioning equipment

Abstract

This invention provides a high-precision installation and positioning device for headphone speakers, belonging to the field of positioning tooling technology. It includes: a main frame, serving as the installation support for the positioning device, on which an installation drive is fixedly mounted, and an installation robot for installing the headphone speaker is mounted on the installation drive; a positioning base, located at the upper end of the main frame, on which multiple positioning supports are arranged in a circular array, used to position the headphone body, thus fixing the headphone body for subsequent speaker installation; and a drive mechanism, used to drive the positioning base to rotate and adjust the position of the positioning supports, facilitating the installation robot's installation of the headphone speaker. This invention has high-precision positioning capabilities, ensuring the stability of the headphone during speaker installation, effectively avoiding installation misalignment, and improving product sound quality and structural reliability.

Description

Technical Field

[0001] This invention belongs to the field of positioning tooling technology, specifically a high-precision positioning device for earphone speakers. Background Technology

[0002] Headphones, as common audio output devices, are widely used in mobile phones, portable music players, radios, and other portable electronic devices. Their function is to convert electrical signals into audible sound waves. The main body of headphones typically adopts an irregular arc-shaped structure design, which makes the installation process of the internal speaker components require extremely high positioning accuracy.

[0003] In current manufacturing processes, headphone speaker assembly typically employs a simple positioning method: the headphone body is placed face up in a large open slot, and then an assembly robot performs the speaker installation. However, due to the lack of effective matching between the irregular curved contour of the headphone body and the positioning slot, the headphone is prone to positional shifts or tilting during installation. This positioning instability directly causes misalignment problems during robot operation, resulting in poor fit between the speaker and the headphone body, thus affecting the product's sound quality and structural reliability. Furthermore, insufficient positioning accuracy can lead to frequent assembly failures during production, increasing rework costs and reducing overall production efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a high-precision mounting and positioning device for headphone speakers, which solves the problem of unstable positioning caused by the irregular arc structure of headphones.

[0005] The technical solution adopted by this invention to solve its technical problem is: a high-precision installation and positioning device for headphone speakers, comprising:

[0006] The main frame serves as the mounting support for the positioning device, and an installation drive is fixedly mounted on it. The installation drive is equipped with an installation robot for installing headphone speakers.

[0007] The positioning base is located at the top of the main frame, and multiple positioning supports are arranged in a circular array on it. The positioning supports are used to position the headphone body so that the headphone body is fixed for subsequent speaker installation.

[0008] The drive mechanism is used to drive the positioning base to rotate and adjust the position of the positioning support to facilitate the installation of the headphone speaker by the robot.

[0009] When installing the headphone speaker, the initial orientation of the positioning bracket is upward. The headphone speaker is placed on the positioning bracket with its mounting position facing downward. After the positioning bracket clamps the headphone in place, the drive mechanism drives the positioning base to rotate clockwise. Simultaneously, the positioning base rotates, causing the positioning bracket to rotate as well. After the positioning bracket with the headphone mounted rotates 180 degrees, the headphone speaker mounting position faces upward. Then, the installation robot installs the speaker onto the headphone. After the headphone speaker is installed, the drive mechanism drives the positioning base to rotate in the opposite direction, and the positioning bracket rotates in the opposite direction. After the positioning bracket with the headphone mounted has rotated 180 degrees in the opposite direction, the headphone body faces upward. Finally, the installation robot removes the installed headphone and inserts a new headphone for installation.

[0010] Preferably, the installation drive includes a transverse guide rail and a transverse lead screw fixedly mounted on the upper end of the main frame. The transverse guide rail and the transverse lead screw are arranged parallel to each other on both sides of the positioning base. A longitudinal support is slidably mounted on the transverse guide rail. The transverse lead screw is used to drive the longitudinal support to slide on the transverse guide rail. A longitudinal lead screw is fixedly mounted on the longitudinal support. A longitudinal slide is connected to the longitudinal lead screw. The installation robot is fixedly mounted on the longitudinal slide. The transverse and longitudinal lead screws enable the transverse and longitudinal position adjustment of the longitudinal slide, thereby ensuring that the installation robot can adjust to different positions to install the headphone speaker.

[0011] Preferably, the positioning base includes a base body with a disc structure, a drive through hole connected to the drive mechanism is provided at the center of the base body, and a plurality of mounting slots for mounting positioning supports are provided on the disc surface of the base body, and the positioning supports are rotatably mounted in the mounting slots.

[0012] Preferably, the mounting groove has support grooves on both sides of the positioning support along its length. A support mechanism for supporting the positioning support is slidably disposed in the support groove. The support mechanism slides and retracts within the support groove. When the positioning support is rotated to the headphone speaker mounting position facing upward, the support mechanism extends out of the support groove to support and limit the side wall of the positioning support, preventing the positioning support from deflecting during the headphone speaker installation process.

[0013] Preferably, the drive mechanism includes a drive motor fixedly installed inside the main frame, the output end of the drive motor is fixedly connected to a drive spindle, and multiple drive connecting rods are fixedly installed on the upper outer periphery of the drive spindle. The drive connecting rods are fixedly connected to the inner wall of the drive through hole. When the drive motor drives the drive spindle to rotate, the positioning base is driven to rotate through the connection of the drive connecting rods.

[0014] Preferably, the positioning support includes a support body, with a support connecting shaft at both ends. The support connecting shaft is rotatably mounted on the side wall of the mounting groove. One end of the support body is provided with an earphone positioning groove for positioning and placing an earphone, and the other end of the support body is provided with a speaker mounting groove for mounting a speaker. The earphone positioning groove and the speaker mounting groove are connected. The support body is provided with a positioning component for clamping the earphone. The support connecting shaft near the driving mechanism extends through the side wall of the mounting groove and into the driving through hole, where a linkage gear is fixedly mounted. The driving mechanism also includes an annular rack fixedly mounted on the main frame. The annular rack is located in the driving through hole and meshes with multiple sets of linkage gears.

[0015] When the drive motor drives the positioning base to rotate, the rotation of the positioning base synchronously drives the linkage gear to mesh with the ring rack, thereby synchronously driving the support connecting shaft and the support body to rotate, realizing the flipping drive of the support body.

[0016] Preferably, the positioning assembly includes two sets of positioning slide plates slidably disposed on the surface of the support body at the end where the earphone positioning groove is located, and two sets of bidirectional lead screws symmetrically distributed around the earphone positioning groove. The lower end of the positioning slide plate is disposed in a groove matching the earphone body. Bidirectional lead screws are rotatably mounted on both sides of the support body. The bidirectional lead screws are symmetrically provided with threads in opposite directions. Two sets of lead screw sliders are threadedly connected to the bidirectional lead screws. The two sets of lead screw sliders are fixedly connected to the positioning slide plate on the same side. One end of the bidirectional lead screw is provided with a linkage mechanism that is drivenly connected to the support connecting shaft.

[0017] Preferably, the linkage mechanism includes a pulley one fixedly installed at one end of the bidirectional lead screw and a pulley two fixedly installed on the outer periphery of the support connecting shaft. The pulley one and pulley two are connected by a transmission belt. When the support connecting shaft rotates under the drive of the drive mechanism, it synchronously drives the bidirectional lead screw to rotate through the transmission connection of the positioning support. Then, using the lead screw transmission principle, it synchronously drives the two sets of positioning slides to move towards or away from each other. After the earphone is placed face down in the earphone positioning slot, the support body rotates at the same time, driving the two sets of positioning slides to move towards the earphone, fixing and clamping the earphone in the earphone positioning slot, ensuring the stability of the earphone during speaker installation. When the speaker is installed, the support body rotates in the opposite direction, synchronously driving the two sets of positioning slides to separate and slide in the opposite direction, ensuring that the installation robot can remove the earphone after the speaker is installed.

[0018] Preferably, the support mechanism includes a support sleeve slidably disposed within a support groove, the support sleeve being connected to the bottom of the support groove via multiple return springs, and a sliding support plate being provided on one side of the support sleeve; the support mechanism further includes a gear shaft rotatably mounted on the side wall of the mounting groove, a connecting gear being fixedly mounted on the gear shaft, and two sets of connecting racks meshing on the gear shaft, the two sets of connecting racks being arranged in a circular array around the gear shaft, and the two sets of connecting racks being fixedly connected to the sliding support plate on the same side respectively;

[0019] When the positioning support is rotated to the position where the headphone speaker is installed facing upwards, the rotation of the gear shaft drives the connecting gear to rotate. The gear and rack meshing transmission drives the connecting racks on both sides and the support sleeves to move towards the positioning support, so that the support sleeves on both sides are pressed against the side wall of the positioning support, ensuring the stability of the headphone speaker installation. After the installation is completed, the support sleeves retract back into the support groove under the elastic action of the return spring, avoiding interference with the rotation of the positioning support.

[0020] Preferably, the support mechanism includes a drive rod fixedly mounted on the support connecting shaft and a drive sleeve fixedly mounted on one of the support sleeves in the mounting groove therein. The drive sleeve is provided with a drive groove that cooperates with the drive rod. When the drive rod rotates with the support connecting shaft and comes into contact with the drive sleeve, the drive rod is inserted into the drive groove of the drive sleeve. Subsequently, as the drive rod continues to rotate with the support connecting shaft, it will drive the support sleeve with the drive sleeve to slide outward. The other set of support sleeves will achieve synchronous relative movement under the action of the connecting gear and the connecting rack, so that the outward sliding of the support sleeves is synchronized with the rotation of the positioning support. Conversely, when the drive rod gradually separates from the drive sleeve, the support sleeves on both sides gradually retract into the support groove under the action of the return spring.

[0021] The beneficial effects of this invention are as follows: By adopting an installation method that rotates the positioning support 180 degrees, the headphone is positioned and clamped downwards during the placement stage, and then flipped to an upward position for speaker installation. This effectively solves the problem of unstable positioning caused by the irregular arc structure of the headphone, has high-precision positioning capability, can ensure the stability of the headphone during speaker installation, effectively avoids installation misalignment, improves product sound quality and structural reliability, and at the same time reduces rework and improves production efficiency. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0024] Figure 2 This is an isometric structural schematic diagram of the entire invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the positioning base assembly of the present invention;

[0026] Figure 4 This is a top view of the positioning base assembly of the present invention;

[0027] Figure 5 This is the present invention. Figure 4 Schematic diagram of the cross-sectional structure along the AA direction;

[0028] Figure 6 This is a three-dimensional structural diagram of the positioning base of the present invention;

[0029] Figure 7 This is an isometric structural diagram of the positioning base of the present invention;

[0030] Figure 8 This is a three-dimensional structural schematic diagram of the positioning support of the present invention;

[0031] Figure 9 This is a schematic diagram of the axial structure of the positioning support of the present invention;

[0032] Figure 10 This is a three-dimensional structural diagram of the assembly of the positioning support and the support mechanism of the present invention;

[0033] Figure 11 This is an isometric structural diagram of the assembly of the positioning support and the support mechanism of the present invention.

[0034] In the diagram: 1. Main frame; 2. Mounting drive; 21. Transverse guide rail; 22. Transverse lead screw; 23. Longitudinal support; 24. Longitudinal lead screw; 25. Longitudinal slide; 3. Robot mounting; 4. Positioning base; 41. Base body; 42. Drive through hole; 43. Mounting slot; 44. Support slide; 5. Drive mechanism; 51. Drive spindle; 52. Drive connecting rod; 53. Ring rack; 6. Positioning support; 61. Support body; 62. Earphone positioning slot; 63. Horn mounting slot; 64. Support connecting shaft; 65. Positioning assembly; 651. Positioning slide plate; 652. Two-way lead screw; 653. Lead screw slider; 66. Linkage mechanism; 661. Pulley one; 662. Transmission belt; 663. Pulley two; 67. Linkage gear; 7. Support mechanism; 71. Support sleeve; 72. Return spring; 73. Sliding support plate; 74. Gear shaft; 75. Connecting gear; 76. Connecting rack; 77. Drive rod; 78. Drive sleeve. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] Please see Figures 1-11As shown, this embodiment of the invention provides a high-precision installation and positioning device for headphone speakers, comprising:

[0037] The main frame 1 serves as the mounting support for the positioning device, and an installation drive 2 is fixedly mounted on it. An installation robot 3 for installing the headphone speaker is mounted on the installation drive 2.

[0038] The positioning base 4 is located at the upper end of the main frame 1, and multiple positioning supports 6 are arranged in a ring array on it. The positioning supports 6 are used to position the headphone body so that the headphone body can be fixed for subsequent speaker installation.

[0039] The drive mechanism 5 is used to drive the positioning base 4 to rotate and adjust the position of the positioning support 6 to facilitate the installation of the headphone speaker by the robot 3.

[0040] When it is necessary to install the headphone speaker, the initial orientation of the positioning bracket 6 is upward. The headphone speaker is placed on the positioning bracket 6 with the installation position facing down. After the positioning bracket 6 clamps the headphone in position, the drive mechanism 5 drives the positioning base 4 to rotate clockwise. At the same time, the positioning base 4 rotates, driving the positioning bracket 6 to rotate as well. After the positioning bracket 6 with the headphone is installed rotates 180 degrees, the headphone speaker installation position is facing upward. Then, the installation robot 3 installs the speaker onto the headphone. After the headphone speaker is installed, the drive mechanism 5 drives the positioning base 4 to rotate in the opposite direction. At the same time, the positioning bracket 6 rotates in the opposite direction. After the positioning bracket 6 with the headphone with the speaker installed rotates 180 degrees in the opposite direction, the headphone body is facing upward. Then, the installation robot 3 removes the installed headphone and inserts a new headphone for installation.

[0041] The innovation of this application lies in solving the positioning problem caused by the irregular arc structure of the earphone through the collaborative design of the main frame 1, positioning base 4, drive mechanism 5, and installation robot 3. Specifically, the positioning support 6 on the positioning base 4 reliably fixes the earphone body, avoiding the loosening problem caused by simply placing it in a slot in the prior art. The drive mechanism 5 rotates the positioning base 4 and the positioning support 6 as a whole, allowing the earphone to flip from an initial downward position to an upward position during installation. This design effectively overcomes the positioning offset problem caused by the earphone's unstable center of gravity or insufficient contact surface. In addition, the cooperation between the installation drive 2 and the installation robot 3 enables precise access to the earphone speaker installation position, further improving the accuracy of installation. Thus, this technical solution systematically eliminates the factors of inaccurate positioning and significantly reduces the occurrence of installation misalignment.

[0042] The working principle of this embodiment is as follows: The main frame 1 serves as the installation support for the entire device, providing a stable physical foundation and reducing vibration interference that may occur during operation, thereby ensuring the rigidity of the overall structure. The installation drive 2 is fixedly mounted on the main frame 1, on which an installation robot 3 is configured to perform the installation operation of the headphone speaker. The installation drive 2 allows the installation robot 3 to flexibly adjust its position in space to adapt to the installation requirements of different headphones and avoid misalignment problems caused by positional deviations.

[0043] The positioning base 4 is located at the upper end of the main frame 1, and multiple positioning supports 6 arranged in a circular array are distributed on it. These positioning supports 6 are used to precisely position and clamp the earphone body, ensuring that the earphone remains fixed during installation. This design overcomes the loosening problem caused by simply placing the earphone in a slot in the prior art, thus improving the reliability of positioning. The drive mechanism 5 is used to drive the positioning base 4 to rotate, dynamically adjusting the position of the positioning supports 6, allowing the installation robot 3 to easily access each workstation and optimizing the operation path.

[0044] When installing the headphone speaker, first place the headphone speaker face down on the positioning bracket 6. After the positioning bracket 6 clamps the headphone, the drive mechanism 5 drives the positioning base 4 to rotate clockwise. Simultaneously, the positioning bracket 6 rotates, and the positioning bracket 6 with the headphone mounted rotates 180 degrees, causing the headphone speaker to face upwards. This flip design ensures the headphone is stably supported during installation, preventing positioning misalignment caused by instability or insufficient contact surface when the irregular curved structure is placed upwards.

[0045] Subsequently, the speaker is installed onto the earphone by the installation robot 3. After the earphone speaker is installed, the drive mechanism 5 drives the positioning base 4 to rotate in the opposite direction, and at the same time, the positioning support 6 rotates in the opposite direction. The positioning support 6, with the earphone containing the installed speaker, rotates 180 degrees in the opposite direction, so that the main body of the earphone faces upward. Finally, the installation robot 3 removes the installed earphone and inserts a new earphone for installation, forming a closed-loop operation.

[0046] For further details, please refer to Figures 1-2As shown, the installation drive 2 includes a transverse guide rail 21 and a transverse lead screw 22 fixedly mounted on the upper end of the main frame 1. The transverse guide rail 21 and the transverse lead screw 22 are arranged parallel to each other on both sides of the positioning base 4. A longitudinal support 23 is slidably mounted on the transverse guide rail 21. The transverse lead screw 22 is used to drive the longitudinal support 23 to slide on the transverse guide rail 21. A longitudinal lead screw 24 is fixedly mounted on the longitudinal support 23. A longitudinal slide block 25 is connected to the longitudinal lead screw 24. The installation robot 3 is fixedly mounted on the longitudinal slide block 25. The transverse lead screw 22 and the longitudinal lead screw 24 are used to adjust the transverse and longitudinal positions of the longitudinal slide block 25, thereby ensuring that the installation robot 3 can adjust to different positions to install the headphone speaker.

[0047] Specifically, this solution achieves high-precision dynamic positioning of the installation robot 3 in a two-dimensional plane by constructing a dual-axis lead screw and guide rail linkage system. The transverse guide rail 21 is fixedly mounted on the upper end of the main frame 1 and arranged parallel to the transverse lead screw 22 on both sides of the positioning base 4. This symmetrical layout provides a rigid reference for transverse movement. The guide rail constrains the linear trajectory of the longitudinal support 23, avoiding the offset caused by uneven force in traditional sliding mechanisms. The transverse lead screw 22 drives the longitudinal support 23 to slide on the guide rail. Utilizing the principle of lead screw rotation and nut engagement, the rotational motion of the motor is converted into precise linear displacement. Compared to pneumatic or simple slide rail drives, lead screw transmission eliminates backlash errors and achieves micron-level repeatable positioning. The longitudinal slide 25 connected to the longitudinal lead screw 24 converts rotational motion into linear motion through threaded engagement. This conversion mechanism, combined with the high-precision pitch of the lead screw, allows the slide to achieve stepless fine-tuning in the vertical direction, meeting the installation height requirements of different headphone models. The installation robot 3 is fixedly mounted on the longitudinal slide 25. The adjustment effect is directly transmitted through the displacement of the slide, ensuring that the robot's working end is always precisely aligned with the target point. When the positioning base 4 rotates the headphone 180 degrees, the lead screw adjusts the coordinates of the slide, enabling the installation robot 3 to accurately cover the new position and completely eliminating the risk of installation misalignment caused by positional deviation.

[0048] Through the above technical solution, the system can calculate and perform displacement compensation in real time based on the position of the earphone after the positioning base rotates, ensuring that the installation robot can flexibly adapt to multi-angle installation requirements and significantly improve the reliability and consistency of speaker installation.

[0049] For further details, please refer to Figures 3-7 As shown, the positioning base 4 includes a base body 41 with a disc structure. The center of the base body 41 is provided with a drive through hole 42 connected to the drive mechanism 5. The disc surface of the base body 41 is provided with a plurality of mounting slots 43 for mounting the positioning support 6. The positioning support 6 is rotatably mounted in the mounting slot 43.

[0050] In practical applications, the base body 41 refers to the core supporting component of the positioning base 4. It can be made of high-strength metal or composite materials in a disc structure to provide a uniform mechanical support foundation and avoid eccentric swaying caused by uneven force. The drive through hole 42 can be understood as a key structure for connecting the drive mechanism 5. It can achieve precise docking with the drive mechanism 5 by setting internal threads or keyways, ensuring accurate alignment between the rotation axis and the output end of the drive mechanism 5. Specifically, the mounting groove 43 refers to the structure that provides the mounting reference position for the positioning support 6. It can achieve a firm embedding of the positioning support 6 by setting a limiting boss or a slot, preventing lateral displacement during rotation.

[0051] In detail, the base body 41 is directly connected to the drive mechanism 5 through its central drive through-hole 42, ensuring precise alignment of the rotation axis and eliminating rotational errors caused by axis misalignment. Multiple mounting slots 43 on the disc surface of the base body 41 allow the positioning supports 6 to be arranged in a circular array. This design not only optimizes space utilization but also ensures balanced force distribution on each positioning support 6 during rotation. The positioning supports 6 are rotatably mounted in the mounting slots 43, utilizing the constraint of the slot walls to maintain the stability of their rotational trajectory, thus ensuring accurate positioning of the earphone body even after a 180-degree rotation. Furthermore, the disc structure design of the base body 41 maintains high-precision positioning during high-speed rotation, effectively preventing installation failure due to positional misalignment during the speaker installation stage. The design of the positioning base 4, together with the drive mechanism 5 and the positioning supports 6, forms a highly efficient and stable earphone speaker installation system, significantly improving the operational accuracy and efficiency of the installation robot.

[0052] Through the above technical solution, the positioning base 4 can effectively solve the positioning stability problem during rotation, providing a reliable guarantee for the high-precision installation of the headphone speaker.

[0053] For further details, please refer to Figures 3-5 As shown, the mounting groove 43 is provided with support grooves 44 on both sides of the positioning support 6 along the length direction. A support mechanism 7 for supporting the positioning support 6 is slidably provided at the support groove 44. The support mechanism 7 slides and retracts into the support groove 44. When the positioning support 6 is rotated to the headphone speaker installation position facing upward, the support mechanism 7 extends out of the support groove 44 to support and limit the side wall of the positioning support 6, preventing the positioning support 6 from deflecting during the installation of the headphone speaker.

[0054] Specifically, the support groove 44 refers to a groove structure opened along the length of the positioning support 6. It can be implemented using a linear guide rail or dovetail groove, etc., to provide a concealed installation path for the support mechanism 7 while ensuring smooth sliding of the support mechanism 7. The support mechanism 7 can be understood as a retractable support component, which can extend and retract through hydraulic push rods, spring drive blocks, or gear and rack transmissions. Its purpose is to dynamically adjust the support state according to the rotation state of the positioning support 6, thereby avoiding obstruction to the normal rotation of the positioning support 6.

[0055] In detail, the mounting slot 43 provides a concealed and stable mounting foundation for the support mechanism 7 by setting support grooves 44 on both sides of the positioning support 6. This design not only ensures the smoothness of the positioning support 6 during rotation but also reserves sufficient space for subsequent support actions. When not in operation, the support mechanism 7 is completely retracted within the support grooves 44, ensuring no additional resistance to the rotation of the positioning support 6. When the positioning support 6 rotates to the headphone speaker mounting position facing upwards, the support mechanism 7 automatically extends based on the rotational position trigger, providing bidirectional support and limiting to the side walls of the positioning support 6. This real-time response mechanism can immediately form a rigid constraint during headphone speaker installation, effectively suppressing lateral deflection caused by external forces, thereby maintaining the precise positioning of the headphone body. Through the above technical solution, the stability and repeatability of the headphone speaker installation process are significantly improved, providing a reliable guarantee for high-precision automated assembly.

[0056] For further details, please refer to Figures 3-6 As shown, the drive mechanism 5 includes a drive motor fixedly installed inside the main frame 1. The output end of the drive motor is fixedly connected to a drive spindle 51. Multiple drive connecting rods 52 are fixedly installed on the upper outer periphery of the drive spindle 51. The drive connecting rods 52 are fixedly connected to the inner wall of the drive through hole 42. When the drive motor drives the drive spindle 51 to rotate, the positioning base 4 is driven to rotate through the connection of the drive connecting rods 52.

[0057] Specifically, this technical solution effectively solves the accuracy and stability problems during the rotation of the positioning base 4 by optimizing the structural design of the drive mechanism 5. The drive motor is fixed inside the main frame 1, using the main frame 1 as the overall support structure to avoid interference from external vibrations or displacements on the drive source, thus maintaining the continuity of power output during startup and operation. The output end of the drive motor is rigidly connected to the drive spindle 51, ensuring direct and backlash-free power transmission, which is particularly important for high-precision positioning, as any slight loosening of the connection may be amplified into installation errors. Multiple drive linkages 52 are fixed to the upper outer periphery of the drive spindle 51, and the linkages are evenly distributed in a ring. This design disperses the driving force onto the positioning base 4, avoiding local twisting or deflection caused by single-point force, thereby improving the synchronicity and stability of the rotation of the positioning base 4. In addition, the drive linkages 52 are rigidly fixed to the inner wall of the drive through hole 42, preventing relative sliding or loosening, and ensuring that the rotation of the drive spindle 51 is accurately transmitted to the positioning base 4. When the drive motor drives the drive spindle 51 to rotate, it drives the positioning base 4 to rotate through the drive linkage 52. This linkage transmission mechanism uses a multi-point distributed rigid connection to efficiently convert the rotational motion of the motor into the precise rotation of the positioning base 4, achieving low-error motion transmission, providing a stable positioning reference for the headphones, and ultimately ensuring the accuracy of speaker installation.

[0058] Based on this, the design of the aforementioned drive mechanism 5 and the structure of the positioning base 4 work in close coordination. The annular distribution of the drive linkage 52 and its connection with the drive through hole 42 not only improves the rotational stability of the positioning base 4 but also avoids local stress concentration by distributing the force, thereby further enhancing the overall reliability of the equipment. This design not only solves the problems of positional deviation and wobbling during rotation but also provides a solid technical foundation for the precise installation of the headphone speaker.

[0059] For further details, please refer to Figures 3-9As shown, the positioning support 6 includes a support body 61, with support connecting shafts 64 at both ends of the support body 61. The support connecting shafts 64 are rotatably mounted on the side wall of the mounting groove 43. One end of the support body 61 is provided with an earphone positioning groove 62 for positioning and placing an earphone, and the other end of the support body 61 is provided with a speaker mounting groove 63 for mounting a speaker. The earphone positioning groove 62 and the speaker mounting groove 63 are connected. A positioning component 65 for clamping the earphone is provided on the support body 61. The support connecting shafts 64 are located near the drive mechanism 5. A linkage gear 67 is fixedly installed in the drive through hole 42 through the side wall of the mounting groove 43. The drive mechanism 5 also includes an annular rack 53 fixedly installed on the main frame 1. The annular rack 53 is located in the drive through hole 42 and meshes with multiple sets of linkage gears 67. When the drive motor drives the positioning base 4 to rotate, the rotation of the positioning base 4 synchronously drives the linkage gear 67 to mesh with the annular rack 53, thereby synchronously driving the support connecting shaft 64 and the support body 61 to rotate, realizing the flipping drive of the support body 61.

[0060] In detail, the above solution solves the problem of asynchronous flipping of the positioning support 6 when the positioning base 4 rotates by integrating the structural design of the positioning support 6 and the gear meshing drive mechanism. The support connecting shafts 64 at both ends of the support body 61 provide the basis for the flipping movement, while the connection design between the earphone positioning slot 62 and the speaker mounting slot 63 ensures that the earphone can naturally change its orientation after flipping, avoiding errors that may be caused by repositioning. The application of the positioning component 65 on the support body 61 further enhances the stability of the earphone during installation. More importantly, the meshing design of the linkage gear 67 and the ring rack 53 utilizes the fixed constraint characteristics of the ring rack 53 to efficiently convert the translational movement of the positioning base 4 into the precise rotation of the support body 61, thereby achieving high-precision control of 180-degree flipping. This design not only ensures the stability of the flipping process but also significantly improves repeatability, providing a reliable positioning guarantee for the high-precision installation of the earphone speaker. In addition, the combination of this solution with the rotation mechanism of the positioning base 4 further optimizes the overall operating efficiency of the equipment, demonstrating the ingenuity of the technical solution.

[0061] For further details, please refer to Figures 3-9As shown, the positioning component 65 includes two sets of positioning slide plates 651 slidably disposed on the surface of the support body 61 at the end where the earphone positioning groove 62 is located. The two sets of bidirectional lead screws 652 are symmetrically distributed with respect to the earphone positioning groove 62. The lower end of the positioning slide plate 651 is provided with a groove that matches the earphone body. The bidirectional lead screws 652 are rotatably mounted on both sides of the support body 61. The bidirectional lead screws 652 are symmetrically provided with threads in opposite directions. The bidirectional lead screws 652 are threadedly connected to two sets of lead screw sliders 653. The two sets of lead screw sliders 653 are fixedly connected to the positioning slide plate 651 on the same side. One end of the bidirectional lead screw 652 is provided with a linkage mechanism 66 that is drivenly connected to the support connecting shaft 64.

[0062] Specifically, the positioning slide plate 651 is a component used to clamp the headphones. It can be made of a plate-like structure with elastic or rigid materials, and its purpose is to ensure the stability of the headphones when the speaker is installed. The bidirectional lead screw 652 can be understood as a transmission device capable of synchronous movement in opposite directions or back-to-back. It can achieve diverse transmission effects by setting different pitches or diameters of thread structures. In practical applications, the lead screw slider 653 is a sliding component used in conjunction with the bidirectional lead screw 652. It can be made of metal or high-strength plastic and its purpose is to convert rotational motion into linear motion, thereby driving the positioning slide plate 651 to clamp or release. Furthermore, the linkage mechanism 66 is a device for transmitting power. It can be implemented using gears, belts, or other mechanical transmission methods, and its purpose is to transmit the rotational input of the support connecting shaft 64 to the bidirectional lead screw 652.

[0063] Specifically, this solution addresses the core issue of automatic clamping and release of the headphones during installation by designing the positioning component to be linked to the rotation of the support. When the support body 61 rotates to the position where the headphone speaker is facing upwards, the rotation of the support connecting shaft 64 drives the bidirectional lead screw 652 via the linkage mechanism 66. Utilizing the opposite direction of the threaded joints, the lead screw slider 653 moves towards each other, thereby causing the positioning slide plate 651 to clamp the headphones. This design fully utilizes the rotational motion during the installation process as the driving source, eliminating the need for an additional independent driving device and simplifying the system structure. Simultaneously, when the support body 61 rotates in the reverse direction after installation, the reverse rotation of the support connecting shaft 64 synchronously drives the bidirectional lead screw 652 to rotate in the reverse direction, causing the lead screw slider 653 to move backwards, releasing the headphones for removal. This symmetrical layout ensures a uniform distribution of clamping force, preventing the headphones from tilting due to force on one side, and significantly improving the stability and positioning accuracy of the installation process. In addition, the lower end of the positioning slide plate 651 is provided with a groove that matches the headphone body. Based on the irregular arc structure of the headphone, it ensures a tight fit to the surface when clamped, avoiding displacement caused by uneven force during installation.

[0064] The above technical solution not only realizes the automatic clamping and releasing function of the headphones during the installation process, but also effectively avoids manual intervention or additional control steps, significantly improving production efficiency and reducing equipment complexity.

[0065] For further details, please refer to Figures 3-9 As shown, the linkage mechanism 66 includes a pulley 661 fixedly installed at one end of the bidirectional lead screw 652 and a pulley 663 fixedly installed on the outer periphery of the support connecting shaft 64. The pulley 661 and the pulley 663 are connected by a transmission belt 662. When the support connecting shaft 64 rotates under the drive of the drive mechanism 5, it synchronously drives the bidirectional lead screw 652 to rotate through the transmission connection of the positioning support 6. Then, using the lead screw transmission principle, it synchronously drives the two sets of positioning slide plates 651 to move towards or away from each other. After the earphone is placed face down in the earphone positioning slot 62, the support body 61 rotates while driving the two sets of positioning slide plates 651 to move towards the earphone, fixing and clamping the earphone in the earphone positioning slot 62, ensuring the stability of the earphone during speaker installation. When the speaker is installed, the support body 61 rotates in the opposite direction, which synchronously drives the two sets of positioning slide plates 651 to slide in opposite directions, ensuring that the installation robot 3 can take out the earphone after the speaker is installed.

[0066] Specifically, the linkage mechanism 66 refers to a device that transmits power through mechanical linkage, which can be implemented using other forms of power transmission structures such as gear transmission and chain transmission. Pulley 661 serves as the starting point of power transmission, and its position ensures the directness and efficiency of power transmission. Pulley 663 is fixed to the outer circumference of the support connecting shaft 64, its purpose being to convert the rotational motion of the support into the rotation of the pulleys, avoiding the introduction of an additional drive source. The transmission belt 662 connects the two pulleys, its purpose being to achieve slip-free synchronous transmission, ensuring the continuity and stability of power transmission during rotation.

[0067] Specifically, this solution addresses the technical defect of the positioning slides not being able to move automatically and synchronously during the support's rotation through a mechanical linkage design between pulleys and a transmission belt. Pulley 1 (661) is fixed to one end of the bidirectional lead screw (652), ensuring that the screw's rotation directly responds to the support's action. Pulley 2 (663) is fixed to the outer circumference of the support connecting shaft (64), converting the support's rotational motion into pulley rotation, making the support's rotation itself the trigger source for the clamping action. The transmission belt (662) connects the two pulleys, achieving slip-free synchronous transmission, ensuring the continuity and stability of power transmission during rotation, and preventing clamping timing deviations due to slippage. When the support connecting shaft (64) rotates under the action of the drive mechanism (5), it synchronously drives the bidirectional lead screw (652) to rotate through the transmission connection of the positioning support (6). The key to this synchronization mechanism lies in the direct coupling between the support rotation and the lead screw rotation, eliminating the need for an independent control system, thereby ensuring the accuracy of the two sets of positioning slides (651) moving towards or away from each other according to the direction of the lead screw thread. After the earphone is placed face down in the positioning slot, the support body 61 rotates while simultaneously moving the positioning slide plate 651 toward the earphone. This synchronized clamping action benefits from the linkage between the support rotation and the lead screw rotation, ensuring a strict match between the clamping process and the support rotation angle, preventing the earphone from shifting due to inertia or vibration during a 180-degree flip. Similarly, when the support body 61 rotates in the opposite direction, it simultaneously causes the positioning slide plate 651 to separate and slide. This reverse linkage mechanism ensures that the release action and the timing of the pick-up are precisely matched, preventing damage to the earphone due to clamping residue when the installation robot 3 picks it up. Overall, this linkage mechanism directly converts the core action of support rotation into clamping / releasing power, eliminating the problem of the clamping action and rotation process being disconnected in the original solution, and significantly improving the reliability of earphone positioning.

[0068] Furthermore, this solution forms an organic whole with the positioning component 65 and the positioning support 6. The clamping action is directly triggered by the rotation of the support, achieving stable clamping of the headphones during rotation. This effectively solves the problem of unstable clamping of headphones during rotation and improves the speaker installation accuracy. At the same time, this solution requires no additional drive source, simplifies the equipment structure, and improves the reliability and operating efficiency of the system.

[0069] For further details, please refer to Figures 10-11 As shown, the support mechanism 7 includes a support sleeve 71 slidably disposed in the support groove 44. The support sleeve 71 is connected to the bottom of the support groove 44 through multiple return springs 72. A sliding support plate 73 is provided on one side of the support sleeve 71. The support mechanism 7 also includes a gear shaft 74 rotatably mounted on the side wall of the mounting groove 43. A connecting gear 75 is fixedly mounted on the gear shaft 74. Two sets of connecting racks 76 are meshed on the gear shaft 74. The two sets of connecting racks 76 are arranged in a circular array with the gear shaft 74 as the center. The two sets of connecting racks 76 are respectively fixedly connected to the sliding support plate 73 on the same side.

[0070] When the positioning support 6 rotates to the position where the headphone speaker is installed facing upwards, the rotation of the gear shaft 74 drives the connecting gear 75 to rotate. The gear and rack meshing transmission drives the connecting racks 76 and the support sleeves 71 on both sides to move towards the positioning support 6, so that the support sleeves 71 on both sides are pressed against the side wall of the positioning support 6, ensuring the stability of the headphone speaker installation. After the installation is completed, the support sleeves 71 retract back into the support groove 44 under the elastic action of the return spring 72, avoiding interference with the rotation of the positioning support 6.

[0071] Specifically, the support sleeve 71 refers to a component capable of linear reciprocating motion within the support groove 44. It can be implemented using a slider structure made of metal or high-strength plastic, and its purpose is to provide stable lateral support for the positioning support 6. The return spring 72 can be understood as an elastic element, specifically a helical spring, leaf spring, or other elastic device with similar function, and its purpose is to provide automatic reset capability for the support sleeve 71. In practical applications, the sliding support plate 73 refers to the intermediate carrier for transmitting force. It can be implemented using rigid plates or structural components with reinforcing ribs, and its purpose is to ensure uniform distribution of the supporting force.

[0072] In detail, the gear shaft 74, as the core transmission component, converts the rotational motion of the positioning support 6 into linear displacement through rotation. When the positioning support 6 rotates to a specific position, its rotational motion is converted into synchronous rotation of the gear shaft 74 through a linkage mechanism, which in turn precisely drives the connecting rack 76 to move through the meshing transmission of the connecting gear 75 and the connecting rack 76. This mechanical linkage design based on rotation angle not only eliminates the complexity of external control but also ensures the synchronicity of the supports on both sides through the distribution of the ring array of connecting racks 76. Crucially, the gear and rack meshing transmission directly converts the rotation angle of the positioning support 6 into linear displacement of the support sleeve 71, allowing the support sleeve 71 to automatically extend and press against the side wall when the positioning support 6 reaches the installation position, providing immediate and uniform support force.

[0073] Through the above technical solution, the support mechanism 7 achieves precise synchronization with the rotation of the positioning support 6, fundamentally solving the problem of automatic triggering and resetting of the support action. This design effectively prevents minor deflection of the positioning support 6 during installation, significantly improving the positioning accuracy and overall stability of the headphone speaker installation. Simultaneously, this solution works organically with components such as the positioning base 4 and the drive mechanism 5, ensuring the smoothness and reliability of the entire installation process through a mechanical linkage mechanism, thereby improving the overall performance of the equipment.

[0074] For further details, please refer to Figures 10-11As shown, the support mechanism 7 includes a drive rod 77 fixedly mounted on the support connecting shaft 64 and a drive sleeve 78 fixedly mounted on one of the support sleeves 71 within the mounting groove 43. The drive sleeve 78 is provided with a drive groove that cooperates with the drive rod 77. When the drive rod 77 rotates with the support connecting shaft 64 and comes into contact with the drive sleeve 78, the drive rod 77 is inserted into the drive groove of the drive sleeve 78. Subsequently, as the drive rod 77 continues to rotate with the support connecting shaft 64, it will drive the support sleeve 71 with the drive sleeve 78 to slide outward. The other set of support sleeves 71 will move synchronously relative to each other under the action of the connecting gear 75 and the connecting rack 76, so that the outward sliding of the support sleeves 71 is synchronized with the rotation of the positioning support 6. Conversely, when the drive rod 77 gradually separates from the drive sleeve 78, the support sleeves 71 on both sides gradually retract into the support groove 44 under the action of the return spring 72.

[0075] Specifically, the drive rod 77 refers to the transmission component directly fixed to the support connecting shaft 64. It can be implemented using a rigid metal rod to ensure that the driving action is completely consistent with the rotation of the positioning support 6. The drive sleeve 78 refers to the mating component set on the support sleeve 71. It can be implemented using a sleeve structure with a precision-machined drive groove. Its purpose is to trigger the extension action of the support sleeve 71 through its cooperation with the drive rod 77. The return spring 72 refers to the elastic element connecting the support sleeve 71 and the bottom of the support groove 44. It can be implemented using a compression spring or a tension spring. Its purpose is to automatically return the support sleeve 71 to its original position.

[0076] In detail, this solution directly fixes the drive rod 77 to the support connecting shaft 64, ensuring that the rotation of the drive rod 77 is completely synchronized with the rotation of the positioning support 6. When the positioning support 6 rotates to the headphone speaker mounting position facing upwards, the drive rod 77 contacts the drive sleeve 78 and inserts into the drive groove, thus precisely triggering the extension action of the support sleeve 71. As the drive rod 77 continues to rotate, the rotational kinetic energy of the support connecting shaft 64 directly drives the single-sided support sleeve 71 to slide outwards, reducing errors in the transmission process. The other set of support sleeves 71 achieves synchronous relative movement through the meshing of the connecting gear 75 and the connecting rack 76, ensuring a uniform distribution of support force on both sides and effectively preventing the positioning support 6 from deflecting when the speaker is under installation force. The outward sliding of the support sleeve 71 is synchronized with the rotation of the positioning support 6, ensuring that the support remains stable throughout the entire installation process. When the drive rod 77 separates from the drive sleeve 78, the return spring 72 causes the support sleeve 71 to smoothly retract back into the groove, avoiding interference with the subsequent rotation of the positioning support 6. The overall design precisely binds the support action with the rotation position of the positioning support 6 through mechanical coupling, which significantly improves the synchronization accuracy and stability of the support mechanism 7 and provides a reliable guarantee for high-precision speaker installation.

[0077] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision mounting and positioning device for headphone speakers, characterized in that: include: The main frame (1) serves as the installation support for the positioning device, and an installation drive (2) is fixedly installed on it. An installation robot (3) for installing the headphone speaker is installed on the installation drive (2). The positioning base (4) is set at the upper end of the main frame (1), and multiple positioning supports (6) arranged in a ring array are provided on it. The positioning supports (6) are used to position the headphone body so that the headphone body can be fixed for subsequent speaker installation. The drive mechanism (5) is used to drive the positioning base (4) to rotate and adjust the position of the positioning support (6) to facilitate the installation of the robot (3) to install the headphone speaker; When it is necessary to install the speaker of the earphone, the initial orientation of the positioning support (6) is upward. The earphone speaker is placed on the positioning support (6) with the installation position facing down. After the positioning support (6) clamps the earphone, the driving mechanism (5) drives the positioning base (4) to rotate in the forward direction. While the positioning base (4) rotates, the positioning support (6) rotates. After the positioning support (6) with the earphone is installed rotates 180 degrees, the earphone speaker installation position faces upward. Then, the installation robot (3) installs the speaker onto the earphone. After the earphone speaker is installed, the driving mechanism (5) drives the positioning base (4) to rotate in the reverse direction. At the same time, the positioning support (6) rotates in the reverse direction. After the positioning support (6) with the installed earphone is installed rotates 180 degrees in the reverse direction, the main body of the earphone faces upward. Then, the installation robot (3) takes out the installed earphone and puts in a new earphone for installation. The positioning base (4) includes a base body (41) in the form of a disc. The center of the base body (41) is provided with a drive through hole (42) connected to the drive mechanism (5). The disc surface of the base body (41) is provided with a plurality of mounting slots (43) for mounting the positioning support (6). The positioning support (6) is rotatably mounted in the mounting slot (43). The drive mechanism (5) includes a drive motor fixedly installed inside the main frame (1). The output end of the drive motor is fixedly connected to a drive spindle (51). Multiple drive connecting rods (52) are fixedly installed on the upper outer periphery of the drive spindle (51). The drive connecting rods (52) are fixedly connected to the inner wall of the drive through hole (42). When the drive motor drives the drive spindle (51) to rotate, the positioning base (4) is driven to rotate through the connection of the drive connecting rods (52). The positioning support (6) includes a support body (61), and both ends of the support body (61) are provided with support connecting shafts (64). The support connecting shafts (64) are rotatably mounted on the side wall of the mounting groove (43). One end of the support body (61) is provided with an earphone positioning groove (62) for positioning and placing earphones, and the other end of the support body (61) is provided with a speaker mounting groove (63) for mounting speakers. The earphone positioning groove (62) and the speaker mounting groove (63) are connected. The support body (61) is provided with a positioning component (65) for clamping earphones. The support connecting shaft (64) near the drive mechanism (5) passes through the side wall of the mounting groove (43) and extends into the drive through hole (42) to be fixedly installed with a linkage gear (67). The drive mechanism (5) also includes an annular rack (53) fixedly mounted on the main frame (1). The annular rack (53) is located in the drive through hole (42) and meshes with multiple sets of linkage gears (67). When the drive motor drives the positioning base (4) to rotate, the rotation of the positioning base (4) synchronously drives the linkage gear (67) to mesh with the ring rack (53), thereby synchronously driving the support connecting shaft (64) and the support body (61) to rotate, so as to realize the flipping drive of the support body (61).

2. The high-precision mounting and positioning device for earphone speakers according to claim 1, characterized in that: The installation drive (2) includes a transverse guide rail (21) and a transverse lead screw (22) fixedly mounted on the upper end of the main frame (1). The transverse guide rail (21) and the transverse lead screw (22) are arranged parallel to each other on both sides of the positioning base (4). A longitudinal support (23) is slidably mounted on the transverse guide rail (21). The transverse lead screw (22) is used to drive the longitudinal support (23) to slide on the transverse guide rail (21). A longitudinal lead screw (24) is fixedly mounted on the longitudinal support (23). A longitudinal slide (25) is connected to the longitudinal lead screw (24). The installation robot (3) is fixedly mounted on the longitudinal slide (25). The transverse lead screw (22) and the longitudinal lead screw (24) are used to adjust the position of the longitudinal slide (25) in the transverse and longitudinal directions, thereby ensuring that the installation robot (3) can adjust different positions to install the headphone speaker.

3. The high-precision mounting and positioning device for earphone speakers according to claim 1, characterized in that: The mounting groove (43) is provided with support grooves (44) on both sides of the positioning support (6) along the length direction. A support mechanism (7) for supporting the positioning support (6) is slidably provided at the support groove (44). The support mechanism (7) is slidably retracted in the support groove (44). When the positioning support (6) is rotated to the headphone speaker installation position facing upward, the support mechanism (7) extends out of the support groove (44) to support and limit the side wall of the positioning support (6) to prevent the positioning support (6) from deflecting during the headphone speaker installation process.

4. The earphone speaker high-precision installation and positioning device according to claim 1, characterized in that: The positioning component (65) includes two sets of positioning slide plates (651) slidably disposed on the surface of the support body (61) at one end where the headphone positioning groove (62) is located. Two sets of bidirectional lead screws (652) are symmetrically distributed around the headphone positioning groove (62). The lower end of the positioning slide plate (651) is provided with a groove that matches the headphone body. Both sides of the support body (61) are rotatably mounted with bidirectional lead screws (652). The bidirectional lead screws (652) are symmetrically provided with threads in opposite directions. Two sets of lead screw sliders (653) are threadedly connected to the bidirectional lead screws (652). The two sets of lead screw sliders (653) are fixedly connected to the positioning slide plate (651) on the same side. One end of the bidirectional lead screw (652) is provided with a linkage mechanism (66) that is drivenly connected to the support connecting shaft (64).

5. The earphone speaker high-precision installation and positioning device according to claim 4, characterized in that: The linkage mechanism (66) includes a pulley one (661) fixedly installed at one end of the bidirectional lead screw (652) and a pulley two (663) fixedly installed on the outer periphery of the support connecting shaft (64). The pulley one (661) and the pulley two (663) are connected by a transmission belt (662). When the support connecting shaft (64) rotates under the drive of the drive mechanism (5), it synchronously drives the bidirectional lead screw (652) to rotate through the transmission connection of the positioning support (6), thus synchronously driving the lead screw according to the lead screw transmission principle. Two sets of positioning slides (651) move towards each other or away from each other, placing the earphone face down in the earphone positioning slot (62). As the support body (61) rotates, it drives the two sets of positioning slides (651) to move towards the earphone, fixing the earphone in the earphone positioning slot (62) to ensure the stability of the earphone during speaker installation. When the speaker is installed, the support body (61) rotates in the opposite direction, which simultaneously drives the two sets of positioning slides (651) to slide in opposite directions, ensuring that the installation robot (3) can remove the earphone after the speaker is installed.

6. The earphone speaker high-precision installation and positioning device according to claim 3, characterized in that: The support mechanism (7) includes a support sleeve (71) slidably disposed in the support groove (44). The support sleeve (71) is connected to the bottom of the support groove (44) through multiple return springs (72). A sliding support plate (73) is provided on one side of the support sleeve (71). The support mechanism (7) also includes a gear shaft (74) rotatably mounted on the side wall of the mounting groove (43). A connecting gear (75) is fixedly mounted on the gear shaft (74). Two sets of connecting racks (76) are meshed on the gear shaft (74). The two sets of connecting racks (76) are arranged in a circular array with the gear shaft (74) as the center. The two sets of connecting racks (76) are respectively fixedly connected to the sliding support plate (73) on the same side. When the positioning support (6) rotates to the position where the headphone speaker is installed facing upwards, the gear shaft (74) rotates to drive the connecting gear (75) to rotate. The gear and rack meshing transmission drives the connecting racks (76) and support sleeves (71) on both sides to move toward the positioning support (6), so that the support sleeves (71) on both sides are pressed against the side wall of the positioning support (6), ensuring the stability of the headphone speaker installation. After the installation is completed, the support sleeves (71) retract back into the support groove (44) under the elastic action of the return spring (72), avoiding interference with the rotation of the positioning support (6).

7. The earphone speaker high-precision installation and positioning device according to claim 6, characterized in that: The support mechanism (7) includes a drive rod (77) fixedly mounted on the support connecting shaft (64) and a drive sleeve (78) fixedly mounted on one of the support sliding sleeves (71) in the mounting groove (43). The drive sleeve (78) is provided with a drive groove that cooperates with the drive rod (77). When the drive rod (77) rotates with the support connecting shaft (64) and comes into contact with the drive sleeve (78), the drive rod (77) is inserted into the drive groove of the drive sleeve (78). Subsequently, the drive rod (77) continues to rotate with the support connecting shaft (64). As the shaft (64) rotates, it will drive the support sleeve (71) with the drive sleeve (78) to slide outward. Another set of support sleeves (71) will move synchronously relative to each other under the action of the connecting gear (75) and the connecting rack (76), so that the outward sliding of the support sleeve (71) is synchronized with the rotation of the positioning support (6). Conversely, when the drive rod (77) gradually separates from the drive sleeve (78), the support sleeves (71) on both sides will gradually retract into the support groove (44) under the action of the return spring (72).

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