CN108748857B

CN108748857B - Method for processing micro loudspeaker assembly

Info

Publication number: CN108748857B
Application number: CN201810548907.XA
Authority: CN
Inventors: 牛小龙; 徐相英; 姜晓飞
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2020-10-09
Anticipated expiration: 2038-05-31
Also published as: CN108748857A

Abstract

The invention provides a processing method of a micro loudspeaker assembly, which comprises the following steps: protective layers are arranged on the male die and the female die at positions corresponding to the mesh cloth; arranging mesh cloth between the protective layers, performing injection molding on the mesh cloth, and then performing pressure maintaining and curing; the male die and the female die are disassembled, and the protective layer is attached to the surface of the screen cloth; and removing the protective layer attached to the surface of the mesh cloth by adopting an ultrasonic solvent cleaning mode. By utilizing the method and the device, the problem that the mesh cloth is broken due to high temperature in the processing process can be solved.

Description

Method for processing micro loudspeaker assembly

Technical Field

The invention relates to the technical field of acoustoelectric technology, in particular to a method for processing a micro loudspeaker assembly.

Background

The micro-speaker is one kind of speaker, and miniaturization is one of the mainstream trends of speaker development today, and the micro-speaker that is small in size, light in weight brings the good quality sense of hearing enjoyment to the consumer. The screen cloth has important significance for preventing dust of the loudspeaker and improving the acoustic performance and the like as one of important structures of the loudspeaker, and the acoustic performance of the loudspeaker is directly influenced by the quality of the screen cloth in the loudspeaker processing process. At present, the mesh cloth is usually processed into the plastic part of the loudspeaker by adopting an injection molding process, but the defects of mesh breakage and the like are often caused due to high temperature and the like, and the yield of the final finished product is seriously influenced.

Therefore, the invention provides a new processing technology, and the condition that the mesh is broken due to high temperature is reduced in the mesh processing process.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a method for processing a micro-speaker assembly, so as to solve the problem that the mesh fabric is broken due to high temperature during the processing.

The invention provides a processing method of a micro loudspeaker assembly, which comprises the following steps: protective layers are arranged on the male die and the female die at positions corresponding to the mesh cloth; arranging mesh cloth between the protective layers, performing injection molding on the mesh cloth, and then performing pressure maintaining and curing; the male die and the female die are disassembled, and the protective layer is attached to the surface of the screen cloth; and removing the protective layer attached to the surface of the mesh cloth by adopting an ultrasonic solvent cleaning mode.

In addition, it is preferable that the protective layer is disposed at a position corresponding to the male mold and the female mold by vapor deposition or spin coating.

In addition, it is preferable that the protective layer is a high-temperature and high-molecular material and is dissolved in an organic solvent.

Preferably, a hot runner is provided to the male mold and the female mold, and the hot runner dries and cures the protective layer.

In addition, the preferable scheme is that two ends of the mesh cloth are provided with the nonporous thickened nylon, and the nonporous thickened nylon and the plastic raw material are injected together.

In addition, the preferable scheme is that the opening rate of the mesh cloth is 1% -30%, and the pore diameter of the mesh cloth is 0.2-0.5 mm

According to the technical scheme, the mesh is embedded into the injection molding raw material, and the protective layer is arranged on the surface of the mesh, so that the mesh is prevented from being broken due to high temperature in the processing process.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.

Drawings

Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

FIG. 1 is a flow chart illustrating a method of manufacturing a micro-speaker assembly according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a protective layer arrangement according to an embodiment of the invention;

FIG. 3 is a schematic view of an injection molded web according to an embodiment of the present invention;

FIG. 4 is a schematic illustration showing the male mold and the female mold disassembled according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of cleaning a passivation layer according to an embodiment of the invention.

Wherein the reference numerals include: 1. male die, 2 female die, 3 protective layer, 4 mesh, 5 non-porous thickening nylon, 6 injection molding raw material.

The same reference numbers in all figures indicate similar or corresponding features or functions.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.

Aiming at the problem that the existing mesh cloth is broken due to high temperature in the processing process, the invention provides the processing method of the micro-speaker assembly.

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

To illustrate the method of manufacturing a micro-speaker assembly according to the present invention, fig. 1 shows a flow of the method of manufacturing a micro-speaker assembly according to an embodiment of the present invention.

As shown in fig. 1, the method for processing a micro-speaker assembly according to the present invention includes:

s110: protective layers are arranged on the male die and the female die at positions corresponding to the mesh cloth;

s120: arranging mesh cloth between the protective layers, performing injection molding on the mesh cloth, and then performing pressure maintaining and curing;

s130: the male die and the female die are disassembled, and the protective layer is attached to the surface of the screen cloth;

s140: and removing the protective layer attached to the surface of the mesh cloth by adopting an ultrasonic solvent cleaning mode.

The detailed processing method of the micro-speaker assembly is described in detail with reference to fig. 2 to 5, and the specific processing steps are described in detail.

Step S110 is combined with the embodiment shown in fig. 2, considering that in the injection molding process, in order to prevent the mesh from contacting the high temperature during injection molding, avoidance is often added at the corresponding position of the mold, but it is difficult to avoid the high temperature injection molding raw material contacting the mesh, therefore, the protective layer 3 is disposed at the position of the mesh corresponding to the mold, wherein the protective layer 3 is disposed at the corresponding position of the male mold 1 and the female mold 2 by vapor deposition or spin coating. The protective layer 3 is a high-temperature and high-molecular resistant material and is dissolved in an organic solvent.

Note that, a hot runner is provided on the surface layers of the male mold 1 and the female mold 2, and the hot runner can evaporate a solvent (acetone, ethanol, or the like) at a high speed to the protective layer 3 by preheating, and dry the protective layer 3 to cure the same.

Step S120, with reference to the embodiment shown in fig. 3, closing the male mold 1 and the female mold 2 to complete injection molding, pressure maintaining, and curing, that is: after the protective layers 3 of the male die 1 and the female die 2 are made, the mesh cloth 4 is sucked and placed at the corresponding position (between the two protective layers 3) by a manipulator, and the injection molding action is completed.

Wherein, need to explain, be provided with sclausura thickening nylon 5 at the both ends of screen cloth 4, sclausura thickening nylon 5 moulds plastics together with plastic raw materials 6, promptly: the mesh cloth 4 contacting with the injection molding raw material 6 is made of non-porous thickened nylon 5, so that the mesh cloth can be effectively embedded into the injection molding raw material 6.

In order to effectively protect the mesh cloth 4 and prevent the mesh cloth 4 from breaking, the aperture ratio of the mesh cloth 4 is 1% -30%, the aperture of the mesh cloth is 0.2-0.5 mm, and in application, the mesh cloth with the aperture ratio suitable for practical conditions is selected.

Step S130, with reference to the embodiment shown in fig. 4, opening the mold to protect the surface of the mesh 4, i.e.: after injection molding, the male mold 1 and the female mold 2 are removed after pressure holding and curing, and as can be seen from fig. 4 \22014inthe example, the protective layers 3 are attached to both sides of the mesh fabric 4.

Step S140, with reference to the embodiment shown in fig. 5, after the injection molding is completed, the mold is disassembled, and the protective layer 3 attached to the surface of the mesh 4 is removed by using an ultrasonic solvent cleaning method. Because the protective layer 3 is a high-temperature and high-molecular resistant material and is dissolved in an organic solvent, the protective layer 3 can be easily removed from the mesh cloth by means of an ultrasonic solvent.

According to the processing method of the micro-speaker assembly, the mesh is embedded into the injection molding raw material, and the protective layer is arranged on the surface of the mesh, so that the mesh is prevented from being broken due to high temperature in the processing process.

The method of manufacturing a micro-speaker assembly according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the method of manufacturing the micro-speaker assembly of the present invention described above without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.

Claims

1. A method of manufacturing a micro-speaker assembly, comprising:

protective layers are arranged on the male die and the female die at positions corresponding to the mesh cloth;

arranging mesh cloth between the protective layers, performing injection molding on the mesh cloth, and then performing pressure maintaining and curing;

the male die and the female die are disassembled, and the protective layer is attached to the surface of the mesh cloth;

cleaning the protective layer attached to the surface of the mesh cloth by adopting an ultrasonic solvent cleaning mode;

the protective layer is made of high-temperature-resistant high polymer materials and is dissolved in an organic solvent;

the two ends of the mesh cloth are provided with non-porous thickened nylon, and the non-porous thickened nylon and the plastic raw material are injected together.

2. The method of manufacturing a micro-speaker assembly as claimed in claim 1,

the protective layer is arranged at the corresponding position of the male die and the female die through vapor deposition or spin coating.

3. The method of manufacturing a micro-speaker assembly as claimed in claim 1,

and hot runners are arranged on the male die and the female die and are used for drying and curing the protective layer.

4. The method of manufacturing a micro-speaker assembly as claimed in claim 1,

the aperture ratio of the mesh cloth is 1% -30%, and the aperture of the mesh cloth is 0.2-0.5 mm.