Manufacturing method of vibrating diaphragm

Abstract

The invention relates to a manufacturing method of a vibrating diaphragm. The manufacturing method comprises the following steps: providing a base, a diaphragm, forming and cutting. The base is provided with a body part of which the center is provided with a through hole, an external connecting part arranged at the periphery of the body part and at least one connecting part connected between the body part and the external connecting part; the diaphragm is arranged at the central position of the through hole, and a distance is formed between the diaphragm and the body part; in the forming step, a dangling edge is formed between the body part and the membrane, and the dangling edge extends into the connecting groove to form an extending part; the cutting step is used for cutting off the connecting part and the extending part so as to form the vibrating diaphragm through the body part, the diaphragm and the dangling edge; the base can be clamped by a mechanical arm and the like through the external connecting part, so that the effect of automatic production is achieved, and the production yield and efficiency are further improved.

Description

Technical Field

[0001] The present invention relates to a diaphragm, and more particularly to a method for manufacturing the diaphragm capable of improving production yield and efficiency. Background Art

[0002] The diaphragm is mainly used in speakers to produce sound through vibration. The diaphragm includes a diaphragm formed in the center and a spring arm formed on the periphery of the diaphragm. The diaphragm is used to connect to the voice coil so that when the voice coil interacts with the magnet, the diaphragm is driven by the voice coil and the spring arm produces an up and down amplitude effect, thereby producing sound.

[0003] The existing diaphragms can be divided into two types when they are formed: adhesive type and injection molding type. The adhesive type diaphragm is mainly assembled by bonding the diaphragm and the elastic arm. The injection molding type diaphragm is formed by forming the elastic arm on the diaphragm by injection molding.

[0004] However, no matter the diaphragm is formed by the above-mentioned pasting method or injection molding method, it is often difficult to produce it by an automated method after forming it. Therefore, it is easy to cause a decrease in yield and poor production efficiency during the production process.

[0005] Therefore, how to provide a method for manufacturing a diaphragm that can improve production efficiency and yield is a problem to be solved by the present invention. Summary of the invention

[0006] The main purpose of the present invention is to provide a method for manufacturing a diaphragm, and in particular, a method for manufacturing a diaphragm that can improve production efficiency and yield through automated production.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a method for manufacturing a diaphragm, which comprises: providing a base, providing a diaphragm, a molding step, and a cutting step. The base is composed of a main body, an external connection part, and a connecting part. The center of the main body has a through hole. The external connection part is arranged at the periphery of the main body and is connected to each other through the connecting part, and a connecting groove connected to the through hole is formed on the external connection part and the connecting part. The diaphragm is used to be arranged at the central position of the through hole and a distance is formed between the main body. The molding step refers to molding a hanging edge between the main body and the diaphragm, so as to connect the main body and the diaphragm through the hanging edge, and the hanging edge extends to the connecting groove to form an extension part. The cutting step refers to performing a cutting operation at the connection between the main body and the connecting part to simultaneously cut off the connecting part and the extension part, so as to form the diaphragm through the main body, the diaphragm and the hanging edge.

[0008] In one embodiment, the suspension edge further includes a first joint portion connected to the diaphragm, a second joint portion connected to the main body, and an elastic portion located between the first joint portion and the second joint portion, and the elastic portion is located at the position of the spacing.

[0009] In one embodiment, the extension portion is formed by extending from the second joint portion to the connecting groove.

[0010] In one embodiment, the suspension edge is formed by injection molding using a silicone material.

[0011] In one embodiment, the base is integrally formed of plastic material.

[0012] In one embodiment, the membrane is formed of a material selected from plastic or metal.

[0013] In one embodiment, after the diaphragm is formed, a first cut surface is formed on the side of the main body at a position opposite to the connecting portion.

[0014] In one embodiment, after the diaphragm is formed, a second cut surface is formed on the side edge of the hanging edge at a position opposite to the extension portion.

[0015] In one embodiment, a plurality of protrusions are formed on the external connection portion.

[0016] In one embodiment, a plurality of positioning holes are formed on the external connection portion.

[0017] The advantage of the present invention over the prior art is that, through the provision of the base, the present invention can enable the base to be transported by automated production machines such as robotic arms, thereby automating production and greatly improving production yield and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional exploded view of the present invention.

[0019] Figure 2 It is a cross-sectional view of the base in the present invention.

[0020] Figure 3 It is a cross-sectional view of the mold in the present invention.

[0021] Figure 4 It is a three-dimensional diagram after the injection molding step in the present invention.

[0022] Figure 5 for Figure 4 Cross-sectional view of .

[0023] Figure 6 It is a three-dimensional diagram of the diaphragm in the present invention.

[0024] Figure 7 for Figure 6 Cross-sectional view of .

[0025] Description of reference numerals:

[0026] 10 Base

[0027] 11 Main body part

[0028] 12 External parts

[0029] 121 raised part

[0030] 122 Positioning hole

[0031] 13. Connection

[0032] 14 Through hole

[0033] 15 Connecting groove

[0034] 20 Diaphragm

[0035] 30 Overhang

[0036] 31 First joint

[0037] 32 Second joint

[0038] 33 Elastic part

[0039] 34 Extension

[0040] 40 Mould

[0041] 41 Molding Space

[0042] 50 Diaphragm

[0043] 51 First section

[0044] 52 Second section DETAILED DESCRIPTION

[0045] In order to further understand the techniques, means and effects adopted by the present invention to achieve the predetermined objectives, the preferred feasible embodiments are listed here and described in detail with reference to the accompanying drawings. It is believed that the objectives, features and advantages of the present invention can be deeply and specifically understood thereby.

[0046] like Figures 1 to 7 As shown, the present invention provides a method for manufacturing a diaphragm, wherein the diaphragm manufactured by the manufacturing method is mainly used in a micro speaker. The manufacturing method comprises: providing a base 10, providing a diaphragm 20, a forming step for forming a suspension edge 30, and a cutting step.

[0047] First, the base 10 is integrally formed by injection molding of plastic material, and the base 10 is composed of a main body 11, an external part 12 and at least one connecting part 13. The main body 11 has a through hole 14 in the center; the external part 12 is arranged on the periphery of the main body 11; and the connecting part 13 is used to connect the main body 11 and the external part 12, and a connecting groove 15 connected to the through hole 14 is formed on the external part 12 and the connecting part 13. In this embodiment, the main body 11 is annular, and four connecting parts 13 are arranged between the main body 11 and the external part 12. These connecting parts 13 are equidistantly distributed between the main body 11 and the external part 12, and the connecting grooves 15 connected to the through hole 14 are formed on two of the connecting parts 13.

[0048] The diaphragm 20 can be made of plastic material or metal material. In this embodiment, the diaphragm 20 is formed of plastic material.

[0049] In the molding step, the base 10 and the diaphragm 20 are placed in a mold 40 (which is a prior art and will not be described in detail) in order to position the diaphragm 20 at the center of the through hole 14, and to form a spacing between the diaphragm 20 and the main body 11, and to form a molding space 41 in the mold 40, and then inject a silicone material into the molding space 41 by injection molding, and after the silicone material is cooled and solidified, the hanging edge 30 can be formed in the molding space 41. After molding, the hanging edge 30 includes a first joint portion 31 connected to the diaphragm 20, a second joint portion 32 connected to the main body 11, and an elastic portion 33 located between the first joint portion 31 and the second joint portion 32, and at least one extension portion 34 extending from the second joint portion 32 toward the connecting groove 15, and the elastic portion 33 is located at the position of the spacing. In this embodiment, since the base 10 is provided with two connecting grooves 15 , the suspension edge 30 is also provided with two extending portions 34 , and each extending portion 34 is formed corresponding to each connecting groove 15 .

[0050] In the cutting step, after the hanging edge 30 is formed between the base 10 and the diaphragm 20, the base 10 is taken out of the mold 40, and then the cutting operation is performed at the connection between the main body 11 and the connecting portion 13 to simultaneously cut off each of the connecting portions 13 and each of the extending portions 34, thereby forming a diaphragm 50 through the main body 11, the diaphragm 20 and the hanging edge 30.

[0051] It is worth mentioning that since the diaphragm 50 in this embodiment is formed by cutting off the base 10, a first cut surface 51 formed by cutting off each connecting portion 13 will be formed on the outer side of the main body 11, and a second cut surface 52 formed by cutting off each extending portion 34 will also be formed on the outer side of the second joint portion 32. In this way, the recognition of the diaphragm 50 can be increased.

[0052] In addition, in this embodiment, in order to improve the effect of automated production, the external portion 12 of the base 10 is mainly provided with a plurality of protrusions 121 protruding from the surface of the external portion 12, and the external portion 12 is also provided with a plurality of positioning holes 122 penetrating the external portion 12, so that when the base 10 is placed in the mold 40, a robot arm (which belongs to the prior art and will not be described in detail) can be used to clamp the base 10 through the protrusions 121, and the base 10 can be effectively fixed in the mold 40 through the positioning holes 122. After the cantilever 30 is formed, the base 10 can be clamped by the robot arm, so that the base 10 is taken out of the mold 40, thereby achieving the effect of fully automated production, thereby effectively improving production efficiency and yield.

[0053] It is worth mentioning that since the diaphragm 50 made by the present invention is mainly used in micro speakers, the volume of the diaphragm 50 is quite small. After the base 10 with the external portion 12 is formed on the periphery of the main body 11, the robot arm does not need to directly clamp the main body 11, but only needs to clamp the protrusions 121 on the external portion 12. In this way, the diaphragm 50 can be prevented from being damaged by the robot arm, thereby effectively significantly increasing the production yield.

[0054] The above is a detailed description and drawings of the preferred embodiments of the present invention, and is not intended to limit the present invention. The entire scope of the present invention shall be subject to the following patent scope, and all embodiments and approximate structures of the spirit of the patent scope and similar variations thereof shall be included in the present invention.

Claims

1. A method for manufacturing a diaphragm, characterized in that: The manufacturing method comprises: A base is provided, the base is composed of a main body, an external connection part and at least one connecting part, the main body has a through hole in the center, the external connection part is arranged on the periphery of the main body and connected to each other through the connecting part, and a connecting groove is formed on the external connection part and the connecting part and is connected to the through hole; Providing a diaphragm, the diaphragm is used to be arranged at the central position of the through hole and to form a distance between the diaphragm and the main body; a molding step, forming a hanging edge between the main body and the diaphragm, so as to connect the main body and the diaphragm through the hanging edge, and the hanging edge extends into the connecting groove to form an extension portion; and A cutting step is performed to cut off the connection between the main body and the connecting part, and the connecting part and the extending part are cut off at the same time, so as to form the diaphragm through the main body, the diaphragm and the hanging edge.

2. The method for manufacturing a diaphragm according to claim 1, wherein: The hanging edge also includes a first joint part connected to the diaphragm, a second joint part connected to the main body, and an elastic part located between the first joint part and the second joint part, and the elastic part is located at the position of the spacing.

3. The method for manufacturing a diaphragm according to claim 2, wherein: The extension portion is formed by extending from the second joint portion to the connecting groove.

4. The method for manufacturing a diaphragm according to claim 2, wherein: The hanging edge is formed by injection molding using silicone material.

5. The method for manufacturing a diaphragm according to claim 1, wherein: The base is integrally formed of plastic material.

6. The method for manufacturing a diaphragm according to claim 1, wherein: The diaphragm is formed of one of plastic and metal materials.

7. The method for manufacturing a diaphragm according to claim 1, wherein: After the diaphragm is formed, a first cut surface is formed at a side edge of the main body portion at a position opposite to the connecting portion.

8. The method for manufacturing a diaphragm according to claim 1, wherein: After the diaphragm is formed, a second cut surface is formed on the side edge of the hanging edge at a position opposite to the extending portion.

9. The method for manufacturing a diaphragm according to claim 1, wherein: A plurality of protrusions are formed on the external connection portion.

10. The method for manufacturing a diaphragm according to claim 1, wherein: A plurality of positioning holes are formed on the external connection portion.

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