CN108650611B - Diaphragm preparation method, diaphragm and loudspeaker - Google Patents
Diaphragm preparation method, diaphragm and loudspeaker Download PDFInfo
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- CN108650611B CN108650611B CN201810554430.6A CN201810554430A CN108650611B CN 108650611 B CN108650611 B CN 108650611B CN 201810554430 A CN201810554430 A CN 201810554430A CN 108650611 B CN108650611 B CN 108650611B
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- silica gel
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- titanium powder
- fluid state
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a diaphragm preparation method, which comprises the following steps: preheating silica gel to a fluid state; mixing the silica gel in a fluid state with a reinforcing agent, and stirring to uniformly mix the silica gel with the reinforcing agent; and curing and molding the uniformly mixed silica gel to prepare the vibrating diaphragm. The invention also discloses a vibrating diaphragm and a loudspeaker. The invention realizes that the rigidity of the vibrating diaphragm is enhanced on the premise of not increasing the thickness of the vibrating diaphragm.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to a vibrating diaphragm preparation method, a vibrating diaphragm and a loudspeaker.
Background
With the development of the electronic industry, the speaker has been widely used as a sound generating device of various electronic products. The diaphragm is one of the key components of a loudspeaker, and plays a critical role in the quality of the loudspeaker. At present, the common diaphragm in the market has the advantages of high plasticity, easy processing and low cost, but the rigidity is poor, and if the better rigidity is to be obtained, the thickness of the diaphragm needs to be increased. That is, the diaphragm is poor in rigidity or too thick, and cannot achieve the characteristics of rigidity and thickness.
Disclosure of Invention
The invention mainly aims to provide a diaphragm preparation method, a diaphragm and a loudspeaker, and aims to solve the technical problem that the diaphragm in the prior art cannot give consideration to both rigidity and thickness.
In order to achieve the above object, the present invention provides a method for preparing a diaphragm, comprising the steps of:
preheating silica gel to a fluid state;
mixing the silica gel in a fluid state with a reinforcing agent, and stirring to uniformly mix the silica gel with the reinforcing agent;
and curing and molding the uniformly mixed silica gel to prepare the vibrating diaphragm.
Preferably, the reinforcing agent is titanium powder, and before mixing the silica gel in a fluid state with the reinforcing agent, the method further comprises:
carrying out surface treatment on the titanium powder;
the mixing of the silica gel in a fluid state with the reinforcing agent specifically comprises:
and mixing the silica gel in a fluid state with the titanium powder after surface treatment.
Preferably, the surface treatment of the titanium powder specifically includes:
adding a fluxing agent into the titanium powder;
the step of mixing the silica gel in a fluid state with the titanium powder subjected to surface treatment specifically comprises the following steps:
and mixing the silica gel in a fluid state with the titanium powder added with the fluxing agent.
Preferably, after the silica gel in a fluid state is mixed with the titanium powder added with the fluxing agent, the method further comprises the following steps:
and heating the mixed silica gel, the fluxing agent and the titanium powder.
Preferably, after the silica gel in a fluid state is mixed with the titanium powder added with the fluxing agent, the method further comprises the following steps:
and carrying out ultrasonic treatment on the mixed silica gel, the fusion agent and the titanium powder.
Preferably, after the silica gel in a fluid state is mixed with the titanium powder added with the fluxing agent, the method further comprises the following steps:
and heating and ultrasonically treating the mixed silica gel, the fusion agent and the titanium powder.
Preferably, the fluxing agent comprises polyvinyl alcohol, polypropylene glycol and the reinforcing agent further comprises a glass fiber material.
Preferably, the mixing the silica gel in a fluid state with the reinforcing agent and stirring specifically includes:
the silica gel and the reinforcing agent which are in a fluid state are alternately added into the reactor and stirred at a corresponding stirring speed, wherein the adjusting frequency of the stirring speed and the curing speed of the silica gel are in a positive correlation relationship.
In addition, in order to achieve the above purpose, the invention further provides a diaphragm, and the diaphragm is prepared by the diaphragm preparation method.
In addition, in order to achieve the above object, the present invention also provides a speaker including the diaphragm as described above.
According to the scheme provided by the invention, the silica gel is preheated to be in a fluid state, then the silica gel in the fluid state is mixed with the reinforcing agent, stirring is carried out, the silica gel and the reinforcing agent are uniformly mixed, the uniformly mixed silica gel is cured and formed, and the vibrating diaphragm is prepared by the cured and formed silica gel. Because the reinforcing agent with high strength is mixed in the cured and molded silica gel, the rigidity of the vibrating diaphragm is enhanced on the premise of not increasing the thickness of the vibrating diaphragm.
Drawings
FIG. 1 is a schematic flow chart of a diaphragm manufacturing method according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart of a diaphragm manufacturing method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of a diaphragm preparation method according to a third embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a preparation method of a vibrating diaphragm.
Referring to fig. 1, fig. 1 is a schematic flow chart of a diaphragm preparation method according to a first embodiment of the present invention. In this embodiment, the preparation method of the diaphragm includes the following steps:
step S10, preheating the silica gel to a fluid state;
step S20, mixing the silica gel in a fluid state with an enhancer, and stirring to uniformly mix the silica gel with the enhancer;
and step S30, curing and molding the uniformly mixed silica gel to prepare the diaphragm.
The diaphragm, one of the key components of a speaker, greatly affects the quality of the speaker. The vibrating diaphragm is an element sensitive to magnetic field change, when an electric signal passes through the coil, the magnetic field changes to cause the stressed deformation of the vibrating diaphragm, and the vibrating diaphragm vibrates at a high speed due to the quick change of the electric signal and then transmits the vibration of the vibrating diaphragm to air, so that sound waves are generated. At present, the common diaphragm in the market has the advantages of high plasticity, easy processing and low cost, but the rigidity is poor, and if the better rigidity is to be obtained, the thickness of the diaphragm needs to be increased. That is, the diaphragm is poor in rigidity or too thick, and cannot achieve the characteristics of rigidity and thickness.
In order to take account of the rigidity and thickness of the diaphragm, in this embodiment, a diaphragm preparation method is provided, and when the diaphragm is prepared, the raw material silica gel of the diaphragm is preheated first until the silica gel is preheated to a fluid state.
And after the silica gel is heated to a fluid state, mixing the silica gel in the fluid state with a corresponding reinforcing agent, and stirring. Wherein, the reinforcing agent comprises titanium powder, glass fiber materials and other materials with higher strength. The silica gel and the reinforcing agent are uniformly mixed by stirring.
For example, after the silica gel is heated to a fluid state, the silica gel in the fluid state is mixed with titanium powder, and stirring is performed to uniformly mix the silica gel with the titanium powder.
After the silica gel and the reinforcing agent are uniformly mixed, curing and molding the uniformly mixed silica gel so as to prepare the vibrating diaphragm by using the cured and molded silica gel. For example, the solidified and shaped silica gel is cut to prepare the diaphragm with the required specification.
According to the scheme provided by the embodiment, the silica gel is preheated to be in a fluid state, then the silica gel in the fluid state is mixed with the reinforcing agent, stirring is carried out, the silica gel and the reinforcing agent are uniformly mixed, the uniformly mixed silica gel is cured and formed, and the vibrating diaphragm is prepared by the cured and formed silica gel. Because the reinforcing agent with high strength is mixed in the cured and molded silica gel, the rigidity of the vibrating diaphragm is enhanced on the premise of not increasing the thickness of the vibrating diaphragm.
Further, as shown in fig. 2, a second embodiment of the diaphragm manufacturing method of the present invention is provided. The difference between the second embodiment of the diaphragm preparation method and the first embodiment of the diaphragm preparation method is that, in the second embodiment of the diaphragm preparation method, taking titanium powder as an example as a reinforcing agent, before the step S20, the method further includes:
step S40, performing surface treatment on the titanium powder;
the step S20 includes:
and step S21, mixing the silica gel in a fluid state with the titanium powder after surface treatment, and stirring to uniformly mix the silica gel with the titanium powder.
In this embodiment, the diaphragm is prepared by taking titanium powder as an example of the reinforcing agent. Because the specific surface area of the titanium powder is large, agglomeration is easily caused after the titanium powder and the silica gel are mixed, so that the mixing is not uniform, and the rigidity of the prepared vibrating diaphragm cannot be well improved. Therefore, in order to further effectively improve the rigidity of the prepared diaphragm, in this embodiment, before the silica gel in a fluid state is mixed with the titanium powder as the reinforcing agent, the titanium powder is subjected to surface treatment, and then the silica gel in the fluid state is mixed with the titanium powder after the surface treatment, and stirring is performed, so that the silica gel and the titanium powder are uniformly mixed.
Optionally, the step S40 includes:
step a, adding a fluxing agent into the titanium powder;
the step S21 includes:
and b, mixing the silica gel in a fluid state with the titanium powder added with the fluxing agent.
Optionally, in order to sufficiently and uniformly mix the titanium powder and the silica gel, a fluxing agent with low surface energy is added to the titanium powder before the silica gel in a fluid state is mixed with the titanium powder. The fluxing agent includes, but is not limited to, polyvinyl alcohol, polypropylene alcohol, and the like.
Then, the silica gel preheated to the fluid state is mixed with the titanium powder added with the fluxing agent and stirred. The silica gel and the titanium powder are fully and uniformly mixed under the action of the fusion agent, so that the situation that the rigidity of the prepared vibrating diaphragm cannot be well improved due to the fact that the silica gel and the titanium powder are not uniformly mixed is avoided.
Further, in order to ensure that the silica gel and the titanium powder are fully and uniformly mixed, the fluxing agent is pretreated before being added into the titanium powder, so that the content of hydroxyl in the fluxing agent is increased. For example, taking polyvinyl alcohol as a fluxing agent, the hydroxyl content of the polyvinyl alcohol is increased by pretreating the polyvinyl alcohol with hydrogen peroxide. The hydroxyl content in the polyvinyl alcohol is high, so that the fusion of the polyvinyl alcohol and the fluid silica gel is enhanced, and the uniform mixing of the silica gel and the titanium powder is enhanced.
Optionally, in an implementation example, after the step b, the method further includes:
and c, heating the mixed silica gel, the fusion agent and the titanium powder.
In order to further enable the silica gel and the titanium powder to be fully and uniformly mixed, in one implementation example, after the silica gel preheated to the fluid state is mixed with the titanium powder added with the fusion agent, the silica gel, the fusion agent and the titanium powder which are mixed are not only continuously stirred, but also subjected to heating treatment, and a hydrogen bond is formed through a grafting reaction of the fusion agent and the silica gel during heating, so that the fusion of the fusion agent and the silica gel in the fluid state is enhanced, and further, the uniform mixing of the silica gel and the titanium powder is enhanced. For example, still taking the fusion agent as polyvinyl alcohol as an example, the mixed silica gel, polyvinyl alcohol and titanium powder are heated, and the polyvinyl alcohol and the silica gel are subjected to a grafting reaction during heating to form a hydrogen bond, so that the fusion of the polyvinyl alcohol and the fluid silica gel is enhanced, and the uniform mixing of the silica gel and the titanium powder is enhanced.
Optionally, in another implementation example, after the step b, the method further includes:
and d, carrying out ultrasonic treatment on the mixed silica gel, the fusion agent and the titanium powder.
In another embodiment, after the silica gel preheated to the fluid state is mixed with the titanium powder added with the fluxing agent, not only is the stirring continuously performed, but also the ultrasonic treatment is performed on the mixed silica gel, the fluxing agent and the titanium powder, and the fusion agent and the silica gel are subjected to the ultrasonic interface fusion after the ultrasonic treatment, so that the fusion of the fluxing agent and the fluid state silica gel is enhanced, and the uniform mixing of the silica gel and the titanium powder is further enhanced. For example, taking the fusion agent as polyvinyl alcohol as an example, the ultrasonic treatment is performed on the mixed silica gel, polyvinyl alcohol and titanium powder, and the polyvinyl alcohol can fully react with the silica gel through the ultrasonic interface fusion of the polyvinyl alcohol and the silica gel, so as to finally achieve the purpose of fixing the titanium powder and uniformly dispersing the titanium powder in the silica gel.
Optionally, the treatment time for performing ultrasonic treatment on the mixed silica gel, fluxing agent and titanium powder is preset. For example, the treatment time period of the ultrasonic treatment is set to 3 to 12 hours.
Optionally, in another implementation example, after the step b, the method further includes:
and e, heating and ultrasonically treating the mixed silica gel, the fusion agent and the titanium powder.
In another embodiment, after the silica gel preheated to the fluid state is mixed with the titanium powder added with the fluxing agent, not only the silica gel, the fluxing agent and the titanium powder are continuously stirred, but also the mixed silica gel, the fluxing agent and the titanium powder are subjected to heating treatment, and the mixed silica gel, the fluxing agent and the titanium powder are simultaneously subjected to ultrasonic treatment, so that the fusion of the fluxing agent and the silica gel in the fluid state is further enhanced through the heating treatment and the ultrasonic treatment, and further the uniform mixing of the silica gel and the titanium powder is enhanced.
After the silica gel and the titanium powder are uniformly mixed, curing and molding the uniformly mixed silica gel so as to prepare the vibrating diaphragm by using the cured and molded silica gel.
According to the scheme provided by the embodiment, before the silica gel in the fluid state is mixed with the titanium powder serving as the reinforcing agent, the titanium powder is subjected to surface treatment, and then the silica gel in the fluid state is mixed with the titanium powder subjected to surface treatment, so that the silica gel and the titanium powder are fully and uniformly mixed, and the vibrating diaphragm is prepared by adopting the silica gel subjected to curing molding, so that the rigidity of the vibrating diaphragm is further enhanced.
Further, as shown in fig. 3, a third embodiment of the diaphragm manufacturing method of the present invention is provided. The difference between the third embodiment of the diaphragm preparation method and the first embodiment of the diaphragm preparation method or the second embodiment of the diaphragm preparation method is that, in the third embodiment of the diaphragm preparation method, the step S20 includes:
step S22, the silica gel that will be fluid state with the reinforcing agent is in turn added to the reactor to adopt corresponding stirring rate to stir, so that the silica gel with the reinforcing agent misce bene, wherein, stirring rate' S adjustment frequency with the solidification rate of silica gel is positive correlation.
In this embodiment, in order to further ensure that the silica gel is sufficiently and uniformly mixed with the reinforcing agents such as titanium powder and glass fiber materials, the silica gel and the reinforcing agents in the fluid state are alternately added to the reactor and stirred in the process of mixing the silica gel and the reinforcing agents in the fluid state after the silica gel is preheated to the fluid state, so that the silica gel and the reinforcing agents are sufficiently and uniformly mixed.
Optionally, during the stirring process, the stirring is performed at a corresponding stirring rate, which is not fixed. For example, the stirring rate may optionally be adjusted according to the distribution state of the reinforcing agent in the silica gel, and the stirring rate is higher when the distribution of the reinforcing agent in the silica gel is more uneven, that is, more dispersed; while the more uniform the distribution of the reinforcing agent in the silica gel, the lower the stirring rate.
Optionally, the adjusting frequency of the stirring speed is in positive correlation with the curing speed of the silica gel, the stirring speed is continuously reduced in the stirring process, the adjusting frequency of the stirring speed is in positive correlation with the curing speed of the silica gel, and the reducing frequency of the stirring speed is determined according to the curing speed of the silica gel, so that the phenomenon that bubbles are generated due to the fact that the stirring speed is too fast or too slow is avoided, and the bubbles are not emitted, and the bubbles can seriously affect the uniform mixing effect of reinforcing agents such as titanium powder, glass fiber materials and the like in the silica gel. Therefore, the uniform mixing effect of the reinforcing agent and the silica gel is further improved by adjusting the stirring speed, so that the rigidity of the vibrating diaphragm prepared by the silica gel is improved.
According to the scheme provided by the embodiment, the silica gel in a fluid state and the reinforcing agent are alternately added into the reactor, and the stirring is carried out at the corresponding stirring speed, so that the uniform mixing effect of the reinforcing agent and the silica gel is further improved, and the rigidity of the vibrating diaphragm prepared by the silica gel is further improved.
The invention also provides a vibrating diaphragm.
The specific preparation operation of the diaphragm provided by the present invention can be described in reference to the above embodiments of the diaphragm preparation method, and is not described herein again.
According to the scheme provided by the embodiment, the silica gel is preheated to be in a fluid state, then the silica gel in the fluid state is mixed with the reinforcing agent, stirring is carried out, the silica gel and the reinforcing agent are uniformly mixed, the uniformly mixed silica gel is cured and molded, and the vibrating diaphragm is prepared by the cured and molded silica gel. Because the reinforcing agent with high strength is mixed in the cured and molded silica gel, the rigidity of the vibrating diaphragm is enhanced on the premise of not increasing the thickness of the vibrating diaphragm.
The invention also provides a loudspeaker.
The loudspeaker provided by the invention comprises the vibrating diaphragm, the vibrating diaphragm is the vibrating diaphragm provided by the invention, the vibrating diaphragm is prepared by adopting the vibrating diaphragm preparation method provided by the invention, the concrete preparation operation can refer to the embodiment of the vibrating diaphragm preparation method, and the details are not repeated herein.
In the scheme provided by this embodiment, the diaphragm of the speaker is prepared by preheating silica gel to a fluid state, then mixing the silica gel in the fluid state with a reinforcing agent, stirring the mixture to uniformly mix the silica gel with the reinforcing agent, curing and molding the uniformly mixed silica gel, and using the cured and molded silica gel. Because the reinforcing agent with high strength is mixed in the curing-molding silica gel, the rigidity of the vibrating diaphragm is enhanced on the premise of not increasing the thickness of the vibrating diaphragm, the performance of the vibrating diaphragm is also improved, and the quality of the loudspeaker adopting the vibrating diaphragm is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A diaphragm preparation method is characterized by comprising the following steps:
preheating silica gel to a fluid state;
will be the fluid state silica gel mixes with the reinforcing agent to stir, so that silica gel with the reinforcing agent misce bene, wherein, the reinforcing agent is titanium powder, will be the fluid state silica gel still includes before mixing with the reinforcing agent:
carrying out surface treatment on the titanium powder;
the mixing of the silica gel in a fluid state with the reinforcing agent specifically comprises:
mixing the silica gel in a fluid state with the titanium powder after surface treatment;
and curing and molding the uniformly mixed silica gel to prepare the vibrating diaphragm.
2. The method for preparing a diaphragm according to claim 1, wherein the step of performing surface treatment on the titanium powder specifically comprises:
adding a fluxing agent into the titanium powder;
the step of mixing the silica gel in a fluid state with the titanium powder subjected to surface treatment specifically comprises the following steps:
and mixing the silica gel in a fluid state with the titanium powder added with the fluxing agent.
3. The method for preparing a diaphragm according to claim 2, wherein the step of mixing the silica gel in a fluid state with the titanium powder added with the fluxing agent further comprises:
and heating the mixed silica gel, the fluxing agent and the titanium powder.
4. The method for preparing a diaphragm according to claim 2, wherein the step of mixing the silica gel in a fluid state with the titanium powder added with the fluxing agent further comprises:
and carrying out ultrasonic treatment on the mixed silica gel, the fusion agent and the titanium powder.
5. The method for preparing a diaphragm according to claim 2, wherein the step of mixing the silica gel in a fluid state with the titanium powder added with the fluxing agent further comprises:
and heating and ultrasonically treating the mixed silica gel, the fusion agent and the titanium powder.
6. The method for preparing a diaphragm of claim 2, wherein the fluxing agent comprises polyvinyl alcohol, polypropylene alcohol, and the reinforcing agent further comprises a glass fiber material.
7. The diaphragm preparation method of any one of claims 1 to 6, wherein the mixing and stirring of the silica gel in a fluid state with a reinforcing agent specifically comprises:
the silica gel and the reinforcing agent which are in a fluid state are alternately added into the reactor and stirred at a corresponding stirring speed, wherein the adjusting frequency of the stirring speed and the curing speed of the silica gel are in a positive correlation relationship.
8. A diaphragm, characterized in that the diaphragm is manufactured by the diaphragm manufacturing method according to any one of claims 1 to 7.
9. A loudspeaker comprising a diaphragm as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554430.6A CN108650611B (en) | 2018-05-31 | 2018-05-31 | Diaphragm preparation method, diaphragm and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554430.6A CN108650611B (en) | 2018-05-31 | 2018-05-31 | Diaphragm preparation method, diaphragm and loudspeaker |
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| Publication Number | Publication Date |
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| CN108650611A CN108650611A (en) | 2018-10-12 |
| CN108650611B true CN108650611B (en) | 2020-10-02 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203675306U (en) * | 2013-07-17 | 2014-06-25 | 嵊州市天乐电声科技有限公司 | Loudspeaker vibration diaphragm for mobile phone and tablet computer |
| CN105025428A (en) * | 2014-04-30 | 2015-11-04 | 福建省辉锐材料科技有限公司 | Loudspeaker diaphragm preparation method |
| CN205029853U (en) * | 2015-10-27 | 2016-02-10 | 歌尔声学股份有限公司 | Silica gel vibrating diaphragm and speaker |
| CN206461767U (en) * | 2016-12-28 | 2017-09-01 | 歌尔股份有限公司 | Silica gel vibrating diaphragm and sound-producing device monomer |
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