Steering mechanism of voice coil cotton thread welding machine

Abstract

The utility model provides a steering mechanism of a voice coil cotton thread welding machine, which comprises a mounting vertical plate, a turntable rotationally connected to the mounting vertical plate, a turntable driving motor arranged on the mounting vertical plate and in driving connection with the turntable, and a plurality of tensioning rotating mechanisms uniformly distributed on the turntable, the tensioning rotating mechanism comprises a main shaft, a tensioning movable rod, a rotating connector and a reset spring, the main shaft comprises a rotating sleeve rotationally connected to the rotating disc and arc-shaped tensioning pieces evenly distributed at one end of the rotating sleeve, and the tensioning movable rod is movably arranged in the main shaft and comprises a connecting rod and a circular truncated cone part connected to one end of the connecting rod; a contact inclined plane is arranged on the inner wall of one end of the outer side of each arc-shaped tensioning piece and abuts against the side wall of the circular truncated cone part, the rotary joint is fixedly connected to the other end of the connecting rod, and the reset spring is arranged on the connecting rod in a sleeving mode and abuts against the position between the rotary sleeve and the rotary joint, so that the welding efficiency of cotton threads can be effectively improved, and manpower is saved; the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of voice coil processing equipment, especially a steering mechanism of a voice coil cotton thread welding machine. Background Technique

[0002] A voice coil is a coil that passes an electric current in a loudspeaker and is an important part of the mechanical wave system of an electro-dynamic loudspeaker. It can also be said to be the heart of the loudspeaker. The voice coil mainly consists of a skeleton, a voice diaphragm, and a coil. During production, the coil needs to be wound around the skeleton. The connecting lines between the two ends of the coil and the center of the skeleton are 180°. When welding the cotton thread, a cotton thread needs to be welded to one end of the coil first, and then the voice coil is rotated 180° and another cotton thread is welded to the other end of the coil. Currently, the welding of voice coil cotton threads is mainly manually operated, with low welding efficiency, prone to problems of material accumulation, affecting the production efficiency of voice coils, requiring a large amount of manpower, and increasing labor costs. Summary of the Invention

[0003] The problem to be solved by the utility model is to provide a steering mechanism of a voice coil cotton thread welding machine to improve welding efficiency and save manpower.

[0004] To solve the above technical problems, a steering mechanism of a voice coil cotton thread welding machine provided by the utility model includes a mounting vertical plate, a turntable rotatably connected to the mounting vertical plate, a turntable driving motor arranged on the mounting vertical plate and drivingly connected to the turntable, and a plurality of tensioning and rotating mechanisms evenly distributed on the turntable. The tensioning and rotating mechanism includes a main shaft, a tensioning movable rod, a rotary joint, and a return spring. The main shaft includes a rotating sleeve rotatably connected to the turntable and a plurality of arc-shaped tensioning pieces evenly distributed at one end of the rotating sleeve. The tensioning movable rod is movably arranged in the main shaft and includes a connecting rod and a frustum portion connected to one end of the connecting rod. A contact inclined surface is arranged on the inner wall of the outer end of the arc-shaped tensioning piece, and the contact inclined surface abuts against the side wall of the frustum portion. The rotary joint is fixedly connected to the other end of the connecting rod, and the return spring is sleeved on the connecting rod and abuts between the rotating sleeve and the rotary joint.

[0005] Preferably, a plurality of positioning components are arranged on the mounting vertical plate. The positioning component includes a positioning cylinder fixedly connected to the mounting vertical plate and a positioning rod fixedly connected to the output shaft of the positioning cylinder. Through holes corresponding to the tensioning and rotating mechanisms are arranged on the turntable in a circular array. The through holes are matched with the positioning rods, and the positioning rods can be inserted into the through holes under the drive of the positioning cylinder.

[0006] Preferably, a flange mounting hole is penetrated through the mounting vertical plate. An installation flange is arranged on the flange mounting hole. A rotating shaft is fixedly connected to the center of the turntable. The installation flange and the rotating shaft are connected through a bearing, and the output shaft of the turntable driving motor is fixedly connected to one end of the rotating shaft.

[0007] The beneficial effects of the present utility model are as follows: The present utility model provides a steering mechanism for a voice coil cotton thread welding machine. When it is necessary to put the voice coil on the main shaft of the current tensioning and rotating mechanism, push the tensioning movable rod forward to separate the side wall of the frustum from the contact inclined surface, and each arc-shaped tensioning piece will elastically recover. At this time, the voice coil can be put on the main shaft. After releasing the tensioning movable rod, the tensioning movable rod will reset under the elastic force of the return spring, and the side wall of the frustum will abut against the contact inclined surface, causing the arc-shaped tensioning pieces to expand outwards, and the voice coil is tensioned and positioned. At this time, cotton thread can be welded to one end of the coil; when it is necessary to weld cotton thread to the other end of the coil, by driving the rotary joint to rotate 180°, the main shaft and the voice coil can be driven to rotate 180° synchronously, and the other end of the coil is turned over. At this time, cotton thread can be welded to the other end of the coil. Multiple voice coils can be placed on the turntable at the same time to avoid material accumulation, which can effectively improve the welding efficiency of cotton thread, save labor, and reduce production costs. Description of the Drawings

[0008] Figure 1 Illustrates the external structure schematic diagram of the present utility model.

[0009] Figure 2 Illustrates the cross-sectional view of the present utility model.

[0010] Figure 3 Illustrates the left view of the present utility model.

[0011] Figure 4 Illustrates the exploded structure schematic diagram of the tensioning and rotating mechanism of the present utility model.

[0012] Figure 5 Illustrates the present utility model Figure 2 The partial enlarged structure schematic diagram of part A in it.

[0013] Explanation of the reference numerals in the drawings: mounting vertical plate 1, flange mounting hole 10, mounting flange 11, turntable 2, through hole 20, rotating shaft 21, turntable driving motor 3, tensioning and rotating mechanism 4, main shaft 40, rotating sleeve 400, arc-shaped tensioning piece 401, contact inclined surface 402, tensioning movable rod 41, connecting rod 410, frustum 411, rotary joint 42, return spring 43, positioning assembly 5, positioning cylinder 50, positioning rod 51. Detailed Embodiment

[0014] To make the purposes, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure.

[0015] Based on the embodiments of the present disclosure described, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present disclosure.

[0016] Reference Figures 1 - 5 。

[0017] The utility model provides a steering mechanism for a voice coil cotton thread welding machine, which includes a mounting vertical plate 1, a turntable 2 rotatably connected to the mounting vertical plate 1, a turntable driving motor 3 arranged on the mounting vertical plate 1 and drivingly connected to the turntable 2, and a plurality of tensioning and rotating mechanisms 4 evenly distributed on the turntable 2. The tensioning and rotating mechanism 4 includes a main shaft 40, a tensioning movable rod 41, a rotary joint 42, and a return spring 43. The main shaft 40 includes a rotary sleeve 400 rotatably connected to the turntable 2 and arc-shaped tensioning pieces 401 evenly distributed at one end of the rotary sleeve 400. The tensioning movable rod 41 is movably arranged in the main shaft 40. The tensioning movable rod 41 includes a connecting rod 410 and a frustum portion 411 connected to one end of the connecting rod 410. A contact inclined surface 402 is arranged on the inner wall of the outer end of the arc-shaped tensioning piece 401, and the contact inclined surface 402 abuts against the side wall of the frustum portion 411. The rotary joint 42 is fixedly connected to the other end of the connecting rod 410. The return spring 43 is sleeved on the connecting rod 410 and abuts between the rotary sleeve 400 and the rotary joint 42.

[0018] Its working principle is that when it is necessary to put the voice coil on the main shaft 40 of the current tensioning and rotating mechanism 4, push the tensioning movable rod 41 forward to separate the side wall of the frustum portion 411 from the contact inclined surface 402, and each arc-shaped tensioning piece 401 will elastically recover. At this time, the voice coil can be put on the main shaft 40. After releasing the tensioning movable rod 41, the tensioning movable rod 41 will reset under the elastic force of the return spring 43, and the side wall of the frustum portion 411 will abut against the contact inclined surface 402, causing the arc-shaped tensioning piece 401 to expand outwards, and the voice coil is tensioned and positioned. At this time, the cotton thread can be welded to one end of the coil; when it is necessary to weld the cotton thread to the other end of the coil, by driving the rotary joint 42 to rotate 180°, the main shaft 40 and the voice coil can be driven to rotate 180° synchronously, and the other end of the coil is turned over. At this time, the cotton thread can be welded to the other end of the coil. In order to improve the degree of automation, a tensioning and rotating drive mechanism can be equipped on the cotton thread welding machine. The tensioning and rotating drive mechanism mainly consists of a cylinder and a motor. A joint matching the inner circle of the rotary sleeve 400 is installed on the output shaft of the motor, and vacuum pores are arranged on the surface of the joint. The cylinder drives the motor to move back and forth to connect the joint to the rotary sleeve 400 and position it by vacuum adsorption. When the cylinder works, it can drive the tensioning movable rod 41 to move back and forth. When the motor works, it can drive the main shaft 40 to rotate to turn the coil 180°. Multiple voice coils can be placed on the turntable 2 at the same time to avoid material accumulation, which can effectively improve the welding efficiency of the cotton thread, save labor, and reduce production costs.

[0019] Based on the above embodiments, a plurality of positioning components 5 are arranged on the installation vertical plate 1. The positioning component 5 includes a positioning cylinder 50 fixedly connected to the installation vertical plate 1 and a positioning rod 51 fixedly connected to the output shaft of the positioning cylinder 50. Through holes 20 corresponding to the tensioning rotation mechanism 4 are arranged on the turntable 2 in an annular array. The through holes 20 are matched with the positioning rod 51, and the positioning rod 51 can be inserted into the through holes 20 under the drive of the positioning cylinder 50. When the turntable driving motor 3 works, it can drive the turntable 2 to rotate. The rotation angle of the turntable 2 each time should be matched with the angle between two adjacent tensioning rotation mechanisms 4. When the turntable 2 stops rotating, the positioning rod 51 is driven by the positioning cylinder 50 to be inserted into the through hole 20, so as to position the turntable 2, avoid the rotation of the turntable 2 during the cotton thread welding, and ensure the accurate welding position.

[0020] Based on the above embodiments, flange mounting holes 10 are arranged through the installation vertical plate 1. An installation flange 11 is arranged on the flange mounting holes 10. A rotating shaft 21 is fixedly connected to the center of the turntable 2. The installation flange 11 and the rotating shaft 21 are connected through a bearing. The output shaft of the turntable driving motor 3 is fixedly connected to one end of the rotating shaft 21, which can improve the rotation stability of the turntable 2.

[0021] The above embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A steering mechanism of a voice coil cotton thread welding machine, characterized in that, It includes an installation vertical plate, a turntable rotatably connected to the installation vertical plate, a turntable driving motor arranged on the installation vertical plate and drivingly connected to the turntable, and a plurality of tensioning and rotating mechanisms evenly distributed on the turntable. The tensioning and rotating mechanism includes a main shaft, a tensioning movable rod, a rotary joint, and a return spring. The main shaft includes a rotary sleeve rotatably connected to the turntable and arc-shaped tensioning pieces evenly distributed at one end of the rotary sleeve. The tensioning movable rod is movably arranged in the main shaft. The tensioning movable rod includes a connecting rod and a frustum portion connected to one end of the connecting rod. A contact inclined surface is arranged on the inner wall of the outer end of the arc-shaped tensioning piece, and the contact inclined surface abuts against the side wall of the frustum portion. The rotary joint is fixedly connected to the other end of the connecting rod. The return spring is sleeved on the connecting rod and abuts between the rotary sleeve and the rotary joint.

2. The steering mechanism of a voice coil cotton thread welding machine according to claim 1, characterized in that, A plurality of positioning components are arranged on the installation vertical plate. The positioning component includes a positioning cylinder fixedly connected to the installation vertical plate and a positioning rod fixedly connected to the output shaft of the positioning cylinder. Through holes corresponding to the tensioning and rotating mechanism are arranged in a circular array on the turntable. The through holes are matched with the positioning rods, and the positioning rods can be inserted into the through holes under the drive of the positioning cylinder.

3. The steering mechanism of a voice coil cotton thread welding machine according to claim 2, characterized in that, Flange mounting holes are arranged through the installation vertical plate, and an installation flange is arranged on the flange mounting holes. A rotating shaft is fixedly connected to the center of the turntable, and the installation flange and the rotating shaft are connected through a bearing. The output shaft of the turntable driving motor is fixedly connected to one end of the rotating shaft.

Images