A high-efficiency bonding fixture for voice coil diaphragm support components

Abstract

This utility model provides a high-efficiency bonding fixture for a voice coil diaphragm support assembly, comprising an upper mold and a lower mold. The top of the lower mold has a first annular limiting part, a second annular limiting part, and a third annular limiting part arranged sequentially from the inside to the outside. A skeleton limiting groove is formed between the first and second annular limiting parts, and a support limiting groove is formed between the second and third annular limiting parts. The bottom of the upper mold has a circular receiving groove, a spherical groove, and an annular groove, with an annular pressing part along the outer edge of the annular groove. The voice coil and support are placed in the skeleton limiting groove and the support limiting groove, respectively. Then, glue is applied to the top of the skeleton and the top plate. The upper mold is then fitted onto the lower mold. The top of the skeleton is bonded to the inner edge of the bottom of the spherical diaphragm, and the annular bonding part is bonded to the top of the top plate. This eliminates the need to manufacture two different fixtures, saving fixture costs, simplifying the operation process, saving manpower, and improving product concentricity.

Description

Technical Field

[0001] This utility model relates to the field of voice coil production fixture technology, and more particularly to a high-efficiency bonding fixture for a voice coil diaphragm support assembly. Background Technology

[0002] The voice coil and diaphragm are important components of a loudspeaker, as shown in the attached diagram. Figure 5 , 6 The voice coil diaphragm support assembly 3 shown mainly consists of a diaphragm 30, a frame 31, and a support 32. A coil is wound around the frame 31 to form a voice coil. The diaphragm 30 includes a spherical diaphragm 300, an annular diaphragm 301 disposed on the outer edge of the spherical diaphragm 300, and an annular adhesive portion 302 disposed on the outer edge of the annular diaphragm 301. The top of the frame 31 needs to be bonded to the bottom inner edge of the spherical diaphragm 300. The support 32 includes a top plate 320 and an annular portion 321 connected to the bottom of the top plate 320. The center of the top plate 320 is provided with a through hole that matches the spherical diaphragm 300. The frame 31 passes through the through hole and the annular adhesive portion 302 is bonded to the top plate 320. A wiring ear plate 322 is provided on each side of the top plate 320. The two leads of the voice coil need to be soldered to the two wiring ear plates 322 respectively. Currently, in the production of this voice coil diaphragm support assembly 3, the diaphragm 30 is first bonded to the frame 31, and then the diaphragm 30 is bonded to the support 32. This step-by-step bonding process results in poor concentricity. Furthermore, it requires two types of bonding fixtures: one for bonding the diaphragm to the voice coil, and another for bonding the diaphragm assembly to the support. This two-stage process also wastes labor costs. Summary of the Invention

[0003] The problem to be solved by this utility model is to provide an efficient bonding fixture for voice coil diaphragm support components, which simplifies the operation process and saves manpower.

[0004] To solve the above technical problems, a high-efficiency bonding fixture for a voice coil diaphragm support assembly provided by this utility model is provided, comprising an upper mold and a lower mold; the top of the lower mold is provided with a first annular limiting part, a second annular limiting part, and a third annular limiting part in sequence from the inside to the outside, a skeleton limiting groove is formed between the first annular limiting part and the second annular limiting part, and a support limiting groove is formed between the second annular limiting part and the third annular limiting part; the bottom of the upper mold is provided with a circular receiving groove that fits with the outer ring of the third annular limiting part with a clearance, a spherical groove is provided at the top center of the circular receiving groove, an annular groove is provided on the outer edge of the spherical groove, and an annular pressing part is provided on the outer edge of the annular groove.

[0005] Preferably, both sides of the lower mold are provided with cut surfaces.

[0006] Preferably, the bottom two sides of the skeleton limiting groove are provided with clearance grooves.

[0007] Preferably, the top of the upper mold is provided with a slot, and the bottom of the slot is provided with a number of air holes that communicate with the spherical groove.

[0008] Preferably, a first limiting post is provided at the bottom of the bracket limiting groove, and a second limiting post is provided on both sides of the bottom of the frame limiting groove.

[0009] The beneficial effects of this utility model are as follows: This utility model provides a high-efficiency bonding fixture for a voice coil and diaphragm support assembly. The spherical groove and annular groove on the upper mold are respectively matched with the spherical membrane and annular membrane of the diaphragm. The diaphragm is placed in the upper mold, and the spherical membrane and annular membrane are respectively located on the spherical groove and annular groove. The skeleton of the voice coil and the annular part of the support are respectively placed in the skeleton limiting groove and the support limiting groove. Then, glue is applied to the top of the skeleton and the top plate. The upper mold is then fitted onto the lower mold, and the lower mold is fitted into the circular receiving groove. The top of the skeleton is bonded to the bottom inner edge of the spherical membrane, and the annular bonding part is bonded to the top of the top plate. The fixture is placed in an oven in the closed state to bake, so that the glue can be cured, thus achieving the bonding and fixing between the diaphragm and the voice coil, and between the diaphragm and the support. There is no need to make two kinds of fixtures, saving fixture costs, simplifying the operation process, saving manpower, and improving product concentricity. Attached Figure Description

[0010] Figure 1 A schematic diagram illustrating the external structure of this utility model in the mold-open state is shown.

[0011] Figure 2 A cross-sectional view of the present invention in the mold-closed state is shown as an example.

[0012] Figure 3 A schematic diagram illustrating the structure of the upper mold of this utility model is shown.

[0013] Figure 4 A schematic diagram illustrating the structure of the lower mold of this utility model is shown.

[0014] Figure 5 This is a schematic diagram of the structure of the voice coil diaphragm support assembly of the present invention from a first perspective.

[0015] Figure 6 This is a schematic diagram of the second view of the voice coil diaphragm support assembly of the present invention.

[0016] Reference numerals: Upper mold 1, circular receiving groove 10, spherical groove 11, annular groove 12, annular pressing part 13, slot 14, air hole 140, Lower mold 2, first annular limiting part 20, second annular limiting part 21, third annular limiting part 22, skeleton limiting groove 23, bracket limiting groove 24, cut surface 25, clearance groove 26, first limiting post 27, second limiting post 28, voice coil diaphragm bracket assembly 3, diaphragm 30, spherical diaphragm 300, annular diaphragm 301, annular bonding part 302, skeleton 31, lead wire 310, bracket 32, top plate 320, arc-shaped notch 320a, annular part 321, wiring ear plate 322. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure.

[0018] Based on the embodiments described in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0019] refer to Figures 1-6 .

[0020] This utility model provides a high-efficiency bonding fixture for a voice coil diaphragm support assembly, comprising an upper mold 1 and a lower mold 2. The top of the lower mold 2 is provided with a first annular limiting part 20, a second annular limiting part 21, and a third annular limiting part 22 arranged sequentially from the inside to the outside. A skeleton limiting groove 23 is formed between the first annular limiting part 20 and the second annular limiting part 21, and a support limiting groove 24 is formed between the second annular limiting part 21 and the third annular limiting part 22. The bottom of the upper mold 1 is provided with a circular receiving groove 10 that fits with the outer ring of the third annular limiting part 22. A spherical groove 11 is provided at the top center of the circular receiving groove 10. An annular groove 12 is provided on the outer edge of the spherical groove 11, and an annular pressing part 13 is provided on the outer edge of the annular groove 12.

[0021] The specific operating principle is as follows: the spherical groove 11 and annular groove 12 on the upper mold are respectively matched and set with the spherical diaphragm 300 and annular diaphragm 301 of the diaphragm 30. The diaphragm 30 is placed in the upper mold 1, and the spherical diaphragm 300 and annular diaphragm 301 will be located on the spherical groove 11 and annular groove 12 respectively. The voice coil skeleton 31 and the annular part 321 of the bracket 32 ​​are respectively placed in the skeleton limiting groove 23 and the bracket limiting groove 24. Then, glue is applied to the top of the skeleton 31 and the top plate 320, and then... The upper mold 1 is fitted onto the lower mold 2, which is then fitted into the circular receiving groove 10. The top of the frame 31 is bonded to the bottom inner edge of the spherical diaphragm 300, and the annular bonding part 302 is bonded to the top of the top plate 320. The fixture is placed in an oven while still closed to allow the glue to cure, thus achieving the bonding and fixing between the diaphragm 30 and the voice coil, and between the diaphragm 30 and the support 32. This eliminates the need to manufacture two different fixtures, saving fixture costs, simplifying the operation process, saving manpower, and improving product concentricity.

[0022] Based on the above embodiments, both sides of the lower mold 2 are provided with cut surfaces 25 to facilitate the placement and removal of the bracket 32 ​​on the bracket limiting groove 24.

[0023] Based on the above embodiments, both sides of the bottom of the skeleton limiting groove 23 are provided with clearance grooves 26, which can avoid the wiring ear plate 322.

[0024] Based on the above embodiments, the top of the upper mold 1 is provided with a slot 14, and the bottom of the slot 14 is provided with a plurality of air holes 140 communicating with the spherical groove 11. A round tube can be inserted into the slot 14, and one end of the round tube is connected to the output end of the vacuum generator through a flexible tube, so that the air holes 140 can be vacuumed. After the diaphragm 30 is placed in the upper mold 1, the diaphragm 30 can be positioned to ensure that the diaphragm 30 is placed in an accurate position and to avoid the diaphragm 30 shifting before bonding.

[0025] Based on the above embodiments, a first limiting post 27 is provided at the bottom of the bracket limiting groove 24, and second limiting posts 28 are provided on both sides of the bottom of the skeleton limiting groove 23. An arc-shaped notch 320a matching the first limiting post 27 can be provided on one side of the top 320 of the bracket 32. When the bracket 32 ​​is placed on the bracket limiting groove 24, the arc-shaped notch 320a is aligned with the first limiting post 27 so that the first limiting post 27 is located on the arc-shaped notch 320a, preventing the bracket 32 ​​from rotating on the bracket limiting groove 24. When the voice coil skeleton 31 is placed on the skeleton limiting groove 23, the two leads of the voice coil are locked on one side of the two second limiting posts 28, preventing the voice coil from rotating on the skeleton limiting groove 23, so that the positions of the diaphragm 30 and the bracket 32 ​​are fixed, making it convenient to solder the two leads of the voice coil to the two connecting ear plates 322 respectively.

[0026] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A voice coil diaphragm suspension assembly efficient bonding jig, characterized in that, The device includes an upper mold and a lower mold. The top of the lower mold has a first annular limiting part, a second annular limiting part, and a third annular limiting part arranged sequentially from the inside to the outside. A skeleton limiting groove is formed between the first annular limiting part and the second annular limiting part, and a support limiting groove is formed between the second annular limiting part and the third annular limiting part. The bottom of the upper mold has a circular receiving groove that fits with the outer ring of the third annular limiting part with a clearance. A spherical groove is provided at the top center of the circular receiving groove, and an annular groove is provided on the outer edge of the spherical groove. An annular pressing part is provided on the outer edge of the annular groove.

2. The voice coil diaphragm suspension assembly high-efficiency bonding jig according to claim 1, wherein, Both sides of the lower mold are provided with cut surfaces.

3. The voice coil diaphragm suspension assembly high-efficiency bonding jig of claim 2, wherein, Both sides of the bottom of the skeleton limiting groove are provided with clearance grooves.

4. The voice coil diaphragm suspension assembly high-efficiency bonding jig of claim 3, wherein, The top of the upper mold is provided with a slot, and the bottom of the slot is provided with a number of air holes that communicate with the spherical groove.

5. The voice coil diaphragm suspension assembly high efficiency bonding fixture of claim 4, wherein, The bottom of the bracket limiting groove is provided with a first limiting post, and the bottom sides of the frame limiting groove are provided with second limiting posts.

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