Novel bonding jig for voice coil and voice diaphragm assembly

Abstract

The utility model provides a novel voice coil and voice diaphragm assembly bonding jig which comprises a base and a positioning die, the positioning die comprises an inserting rod and a positioning disc, an annular sleeving groove is formed in the periphery of the bottom of the positioning disc, a positioning circular truncated cone is arranged in the center of the top of the base, an inserting hole is formed in the center of the positioning circular truncated cone, and the bottom of the positioning disc is connected with a height limiting table. A voice diaphragm is placed at the top of a base, a positioning hole sleeves a positioning round table, the periphery of a connecting ring is coated with glue, a voice coil framework sleeves an annular sleeving groove, then an insertion rod of a positioning die is inserted into an insertion hole of the base until the bottom of a height limiting table is in contact with the top of the positioning round table, and during baking, a product is baked on a bonding jig. As the voice coil and the voice diaphragm are exposed, the heat of the oven can be directly transmitted to the product and the glue, the curing efficiency of the glue can be improved, the glue is more fully and uniformly cured, the bonding effect is improved, the baking time can be saved, the production cost is reduced, and the productivity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of production fixtures for voice coil and diaphragm assemblies, and particularly refers to an adhesive fixture for a new type of voice coil and diaphragm assembly. Background Art

[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 electrodynamic loudspeaker. It can also be said to be the heart of the loudspeaker. As shown in the attached Figure 4 figure, a voice coil and diaphragm assembly 3 on the market is composed of a diaphragm 30 and a voice coil 31. A positioning hole 302 is provided in the center of the diaphragm 30. It is necessary to use glue to bond the skeleton 310 to the outer ring of the connecting ring 300. In order to conveniently bond the skeleton 310 accurately to the connecting ring 300, an adhesive fixture is required. The existing adhesive fixture fits the entire voice coil and diaphragm into the fixture. For models that do not require high-temperature baking of the glue, there is no problem using this type of fixture. However, when producing glue models that need to be fixed by high-temperature baking, since the glue used to bond the diaphragm and the voice coil is wrapped inside the fixture, the heat of the oven is not easily introduced into the interior of the fixture, resulting in poor baking effect of the glue. Eventually, the product has poor adhesion, and it is easy to have the situation of the voice coil and the diaphragm falling off. The defective rate is high, the baking time needs to be extended, the production cost is increased, and the production capacity is reduced. Summary of the Invention

[0003] The problem to be solved by the utility model is to provide an adhesive fixture for a new type of voice coil and diaphragm assembly, which can expose the product, facilitate the baking and curing of the glue, and improve the baking efficiency.

[0004] To solve the above technical problems, an adhesive fixture for a new type of voice coil and diaphragm assembly provided by the utility model includes a base and a positioning die. The positioning die includes an insertion rod and a positioning disc arranged on the insertion rod. An annular fitting groove is provided on the bottom periphery of the positioning disc. A positioning round table is provided at the center of the top of the base. A jack with a clearance fit with the insertion rod is provided at the center of the positioning round table. A limited high platform is connected to the bottom of the positioning disc.

[0005] Preferably, a limiting post is arranged on the top surface of the base.

[0006] Preferably, an air collecting cavity is arranged inside the base. An air channel communicating with the air collecting cavity is arranged at the bottom of the base. Vacuum pores communicating with the air collecting cavity are evenly distributed on the top of the base.

[0007] Preferably, an exhaust hole is arranged through the center of the insertion rod.

[0008] The beneficial effects of the present utility model are as follows: The present utility model provides an adhesive fixture for a novel voice coil and diaphragm assembly. The positioning round table is set to match the positioning hole, and the annular fitting groove is set to match the voice coil skeleton. When in use, place the diaphragm on the top of the base, let the positioning hole sleeve on the positioning round table, and apply glue along the outer periphery of the connecting ring. Then, sleeve the voice coil skeleton on the annular fitting groove. The bottom end of the voice coil skeleton extends beyond the bottom end face of the positioning disc. Next, insert the insertion rod of the positioning die into the jack of the base until the bottom of the limiting platform contacts the top of the positioning round table. The voice coil skeleton will be sleeved on the connecting ring, thus completing the assembly of the voice coil and the diaphragm. During baking, the product is baked on the adhesive fixture. Since the voice coil and the diaphragm are both exposed, the heat of the oven can directly reach the product and the glue, which can improve the curing efficiency of the glue. The glue cures more fully and evenly, improving the bonding effect, saving baking time, reducing production costs, and increasing production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. shows a schematic structural view of the base and the positioning die of the present utility model in a separated state.

[0010] Figure 2 FIG. shows a schematic structural view of the base and the positioning die of the present utility model in a combined state.

[0011] Figure 3 FIG. shows a cross-sectional view of the use effect of the adhesive fixture and the voice coil and diaphragm assembly of the present utility model.

[0012] Figure 4 FIG. shows an exploded structural view of the voice coil and diaphragm assembly of the present utility model.

[0013] Reference numeral description: Base 1, positioning round table 10, jack 11, limiting column 12, air collecting cavity 13, air duct 14, vacuum hole 15, positioning die 2, insertion rod 20, exhaust hole 200, positioning disc 21, annular fitting groove 210, limiting platform 22, voice coil and diaphragm assembly 3, diaphragm 30, connecting ring 300, limiting notch 301, positioning hole 302, voice coil 31, skeleton 310. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] To make the objectives, 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 accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure.

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

[0016] Reference Figures 1 - 4 。

[0017] The utility model provides an adhesive fixture for a novel voice coil and diaphragm assembly, which comprises a base 1 and a positioning die 2. The positioning die 2 includes an insertion rod 20 and a positioning disc 21 arranged on the insertion rod 20. An annular fitting groove 210 is arranged on the bottom periphery of the positioning disc 21. A positioning frustum 10 is arranged at the center of the top of the base 1, and a jack 11 which is in clearance fit with the insertion rod 20 is arranged at the center of the positioning frustum 10. A limiting platform 22 is connected to the bottom of the positioning disc 21.

[0018] The specific working principle is that the positioning frustum 10 is set to match the positioning hole 302, and the annular fitting groove 210 is set to match the skeleton 310. When in use, the diaphragm 30 is placed on the top of the base 1 and the positioning hole 302 is sleeved on the positioning frustum 10, and glue is coated on the outer periphery of the connecting ring 300. Then the skeleton 310 is sleeved on the annular fitting groove 210, and the bottom end of the skeleton 310 extends beyond the bottom end face of the positioning disc 21. Then the insertion rod 20 of the positioning die 2 is inserted into the jack 11 of the base 1 until the bottom of the limiting platform 22 contacts the top of the positioning frustum 10. The skeleton 310 will be sleeved on the connecting ring 300, thus completing the assembly of the voice coil 31 and the diaphragm 30. When baking, the product is baked on the adhesive fixture. Since the voice coil 31 and the diaphragm 30 are both exposed, the heat of the oven can be directly transmitted to the product and the glue, which can improve the curing efficiency of the glue. The glue is cured more fully and evenly, improving the bonding effect, saving the baking time, reducing the production cost and increasing the production capacity.

[0019] Based on the above embodiment, a limiting post 12 is arranged on the top surface of the base 1. In order to facilitate the positioning of the diaphragm 30, a limiting notch 301 can be arranged on the diaphragm 30. When the diaphragm 30 is placed on the base 1, the limiting notch 301 is stuck on the limiting post 12 to prevent the diaphragm 30 from rotating during glue coating.

[0020] Based on the above embodiment, an air collecting cavity 13 is arranged inside the base 1, an air duct 14 communicating with the air collecting cavity 13 is arranged at the bottom of the base 1, and vacuum holes 15 communicating with the air collecting cavity 13 are evenly distributed on the top of the base 1. The bottom end of the air duct 14 is connected to an air pipe. After the diaphragm 30 is placed on the base 1, by evacuating the air collecting cavity 13, the diaphragm 30 can be adsorbed on the base 1, avoiding the floating of the diaphragm 30 during the assembly process and ensuring the accurate assembly position of the voice coil 31 and the diaphragm 30.

[0021] Based on the above embodiment, an exhaust hole 200 is arranged through the center of the insertion rod 20. When the insertion rod 20 of the positioning die 2 is inserted into the jack 11, it is convenient for the air in the jack 11 to be discharged through the exhaust hole 200, facilitating the insertion of the insertion rod 20.

[0022] The above embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A novel bonding fixture for voice coil and membrane assembly, characterized in that: It comprises a base and a positioning mold, wherein the positioning mold comprises an insertion rod and a positioning disk arranged on the insertion rod, the bottom circumference of the positioning disk is provided with an annular fitting groove, the top center of the base is provided with a positioning table, the center of the positioning table is provided with a socket that matches the clearance of the insertion rod, and the bottom of the positioning disk is connected to a limited height platform.

2. A novel bonding jig for voice coil and membrane assembly according to claim 1, characterized in that: A limiting column is arranged on the top surface of the base.

3. A novel bonding jig for voice coil and membrane assembly according to claim 2, characterized in that: An air collecting cavity is arranged inside the base, an air channel communicating with the air collecting cavity is arranged at the bottom of the base, and vacuum air holes communicating with the air collecting cavity are evenly distributed on the top of the base.

4. A novel bonding jig for voice coil and membrane assembly according to claim 3, characterized in that: An exhaust hole is provided through the center of the insertion rod.

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