CN106358132A - Tone tuning cotton and manufacturing process thereof - Google Patents
Tone tuning cotton and manufacturing process thereof Download PDFInfo
- Publication number
- CN106358132A CN106358132A CN201610241130.3A CN201610241130A CN106358132A CN 106358132 A CN106358132 A CN 106358132A CN 201610241130 A CN201610241130 A CN 201610241130A CN 106358132 A CN106358132 A CN 106358132A
- Authority
- CN
- China
- Prior art keywords
- tuning
- tuning cotton
- cotton
- hot pressing
- sheet material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
Abstract
The invention discloses tone tuning cotton and a manufacturing process thereof, and belongs to the technical field of tone tuning cotton. The tone tuning cotton is divided into three kinds including ultra-micropore tone tuning cotton for low-frequency-stage tone tuning, micropore tone tuning cotton for middle-frequency-stage tone tuning and a film-structure tone tuning cotton for high-frequency-stage tone tuning; the aperture of the ultra-micropore tone tuning cotton is 0.03-0.05 mm; the aperture of the micropore tone tuning cotton is 0.1-0.5 mm; the aperture of the film-structure tone tuning cotton is 0.8-1.5 mm; and the diaphragm rate is 50-80%. The tone tuning cotton is mainly made by a hot-pressing process, any additives are not added, and the product is widely used for the fields of high degree of reduction to audio frequency including generation type electronic products such as a mobile phone, a television, a game machine, a computer, a hi-fi audio, a Bluetooth audio, earphones and the like.
Description
Technical field
The present invention relates to tuning cotton technical field, specifically, it is tuning cotton and its processing technology.
Background technology
After 2008, with electronic product increasingly miniaturization, product is increasingly gentlier thinner, in electronic product
The design requirement more and more higher of phonation unit, traditional tuning material can not meet requirement.It is based on this situation,
See the particular/special requirement of tuning silk floss material, I is concentrated on studies, and went forward side by side and inter-trade material is carried out repeatedly
Experiment, finally develops tuning cotton material.
The tuning principle of tuning silk floss material: sounding body produces vibrations and produces sound with windage, in specific space
Sound frequency is different, in order to adjust the audio frequency producing in particular space, is improved in specific sky using tuning silk floss material
Interior audio frequency, virtual increase space makes sound more mellow and fuller.Tuning silk floss material is not advising by different-diameter
Then aperture structure formed material, sounding body produce audio frequency and acoustic pressure, by different frequencies and acoustic pressure compress into
Tuning silk floss material, due to the moment Repeated Compression in specific space and release, the sky in irregular loose structure
Between transient absorption and release acoustic pressure audio frequency, suitable tuning silk floss aperturing under, adjust audio frequency frequency virtual
Increase space.Herba Cladoniae verticillatae is made to produce the effect of big audio amplifier.
In low-frequency range, the big acoustic absorptivity of density is high, and frequency is higher than 500hz, and density is to acoustic absorptivity
Impact very little, this is because for same material, the density increasing material can make its flow resistance increase so that its
Low frequency absorption coefficient raises, and the change of medium, high frequency acoustic absorptivity is less, or even reduces.The shadow to acoustic absorptivity for the thickness
Sound is big compared with density.The increase of thickness, from high frequency to low frequency offset, its low frequency absorption coefficient improves resonant frequency, right
During the larger 500～1250hz of noise contribution, its acoustic absorptivity is higher, and the change of high frequency acoustic absorptivity is less.With
The increase of sample thickness, sound sucting band width is also substantially widened, in actual applications, should according to the spectral characteristic of noise,
The thickness of reasonably select material.Sum up through the application in different acoustic products for many years for this, in particular space,
The filling rate of sound-absorbing material be spatial dimension 60%～80% between, highly for certain height 80%～90% it
Between preferably, and the species of tuning cotton of the prior art is single, and needs in its processing technology to add additive, makes work
Skill is complicated.
Content of the invention
The invention provides tuning cotton and its processing technology.
Tuning cotton and its processing technology are it is characterised in that tuning cotton is divided into three kinds: for the ultra micro of low-frequency range tuning
Hole tuning cotton, the micropore tuning cotton for Mid Frequency tuning, the membrane structure tuning cotton for high band tuning, described super
The aperture of micropore tuning cotton is 0.03～0.05mm, and the aperture of described micropore tuning cotton is 0.1～0.5mm, described film
The aperture of structure tuning cotton is 0.8～1.5mm, and barrier film rate is 50～80%；Its processing technology is as follows:
Step (1), raw material is carried out physics cutting formation and treats hot pressing sheet material by the compression factor according to raw material, treats hot pressing sheet material
Thickness is 2～30mm；
Step (2), the thickness according to treating hot pressing sheet material sets the pressure of hot press, hot pressing time, temperature, frock parameter,
Carry out hot pressing；
Step (3), sheet material complete for step (2) hot pressing is naturally cooled to room temperature so as to solidify.
Step (4), it is 30mm that the sheet material that step (3) solidification is completed adopts measuring head diameter, precision is the thickness of 0.01mm
Degree instrument carries out Thickness sensitivity；
Step (5), is packed by the sheet material of step (4) Thickness sensitivity.
Further, the raw material in described step (1) is polyurethane sponge or tripolycyanamide sponge；Wherein make super
The raw material that micropore tuning cotton adopts is tripolycyanamide sponge, makes micropore tuning cotton, the raw material of membrane structure tuning cotton employing
For polyurethane sponge.
Further, the compression factor in described step (1) is 1:1～15:1.
Further, the pressure limit in described step (2) be 10～300kg, hot pressing time scope be 5～90s,
Temperature is 180～300 DEG C, frock is 0.1～6mm, and described pressure, hot pressing time, temperature, frock are all with treating
The increase of hot pressing sheet thickness and increase.
Further, described frock refers to the thickness reaching needed for sheet material after hot pressing.
Further, in the solidification process in described step (3), during the solidification of the sheet material with polyurethane sponge as raw material
Between be 6h, the hardening time of the sheet material with tripolycyanamide sponge as raw material as 72h, with tripolycyanamide sponge as raw material
Sheet material can produce resilience during solidification.
Compared with prior art, the positive effect of the present invention is:
1st, technical process is relatively simple, it is easy to accomplish, it is easy to control.
2nd, by adopting heat pressing process, any additive need not in manufacturing process, be added.
3rd, tuning cotton not of the same race, the classification of refinement tuning cotton can be selected according to frequency noise scope, improve tuning
The noise reduction of cotton.
Brief description:
Fig. 1 is low-frequency spectra (fr) figure:
Fig. 2 is resonant frequency (imp) figure；
Fig. 3 is harmonic amplitude (thd) figure.
Labelling in accompanying drawing 1,2,3 is respectively as follows: a. not using tuning cotton curve；B. using tuning cotton curve
Specific embodiment
The present invention provides tuning cotton and its processing technology, for make the purpose of the present invention, technical scheme and better clear,
Clearly, the present invention is described in more detail below.It should be appreciated that specific embodiment described herein is only in order to solve
Release the present invention, and without with limit the present invention.
Specific embodiment one:
Step (1), raw material is carried out physics cutting formation and treats hot pressing sheet material by compression ratio (5:1) example according to polyurethane sponge,
Treat hot pressing sheet material thickness be 10mm；
Step (2), the thickness according to treating hot pressing sheet material set the pressure 30～40kg of hot press, hot pressing time 15s～30s,
200 DEG C～215 DEG C of temperature, frock 2mm parameter, carry out hot pressing；
Step (3), sheet material complete for step (2) hot pressing is naturally cooled to room temperature, so that it is solidified through 6h, and obtaining thickness is
2mm, aperture is the micropore tuning cotton of 0.1～0.5mm.
Step (4), it is 30mm that the sheet material that step (3) solidification is completed adopts measuring head diameter, precision is the thickness of 0.01mm
Degree instrument carries out Thickness sensitivity；
Step (5), is packed by the sheet material of step (4) Thickness sensitivity.
Specific embodiment two:
Step (1), raw material is carried out physics cutting formation and treats hot pressing piece by compression ratio (5:1) example according to melamine material
Material, treats that the thickness of hot pressing sheet material is 10mm；
Step (2), the thickness according to treating hot pressing sheet material set the pressure 30kg～60kg of hot press, hot pressing time 40s～60s,
260 DEG C～280 DEG C of temperature, frock 1.8mm parameter, carry out hot pressing；
Step (3), sheet material complete for step (2) hot pressing is naturally cooled to room temperature, so that its resilience is solidified through 72h, obtains
Thickness is 2mm, and aperture is the ultramicropore tuning cotton of 0.03～0.05mm.
Step (4), it is 30mm that the sheet material that step (3) solidification is completed adopts measuring head diameter, precision is the thickness of 0.01mm
Degree instrument carries out Thickness sensitivity；
Step (5), is packed by the sheet material of step (4) Thickness sensitivity.
The tuning principle of tuning cotton of the present invention:
Should be adjusted using irregularly ultra-fine hole (diameter is in 0.05～0.03mm) tuning silk floss when low-frequency range adjusts,
Principle is that low frequency wavelength is longer, is effectively compressed in loose structure medium wavelength and has discharged；When Mid Frequency adjusts
Tuning using microcellular structure (diameter 0.1～0.5mm) is continuous, and principle is that intermediate frequency wavelength passes through aperture frame in aperture
Triboabsorption improves the audio frequency effect of Mid Frequency；The sound frequency of high band is higher, is also the frequency being also easy to produce high frequency distortion
Section, is also easy to produce most according to the complexity of space structure, using membrane structure, (diameter is in 1.5～0.8mm, barrier film rate
50～80%) tuning silk floss material is adjusted, and principle is that higher frequency upper wavelength is short, and it passes through larger aperture
Loss to acoustic pressure is less, by barrier film, the frequency of high frequency is absorbed simultaneously, thus being adjusted to high frequency.
The tuning cotton that specific embodiment one or two is made puts into generation cavity body under same experiment condition, compares and puts into
Tuning cotton there is cavity with do not put into tuning cotton there is cavity to the energy transient absorption of sound wave and release conditions, such as
Shown in Fig. 1,2,3:
Fig. 1 shows to have smoothed using the curve of low frequency end after tuning cotton, improves part effect.This effect is equivalent to
The effect that part cavity is increased, Herba Cladoniae verticillatae produces the effect of big sound equipment；
Fig. 2 shows to have carried out mobile and amount of decrease using the frequency of low frequency end after tuning cotton, so that audio frequency is reduced more preferably more steady
Fixed.The effect of this effect is that audio frequency is more they tended to dextrorotation Boeing frequency percent reduction height, the more mellow and fuller effect of sound.
Fig. 3 shows to be decreased obviously using the amplitude of low frequency end after tuning cotton, and the curve of low frequency end is smoother.This effect is
The effect that the secondary interference that audio frequency produces when playing reduces.Sound is made to be affected to reduce by limited space.
Therefore, tuning cotton is put into generation cavity, by its consumption to the energy transient absorption of sound wave and release, rise
To the effect expanding the volume of cavity, and then reduce the low frequency (its effect be equal to cavity is expanded) of whole module,
Simultaneously because its sensitivity of consumption of energy has declined, thus improving frequency.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, and
Without departing from the spirit or essential characteristics of the present invention, the present invention can be realized in other specific forms.Cause
This, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the present invention
Scope limited by claims rather than described above, it is intended that the equivalency that will fall in claim
All changes in implication and scope are included in the present invention.
Claims (6)
1. tuning cotton and its processing technology are it is characterised in that tuning cotton is divided into three kinds: for the ultramicropore of low-frequency range tuning
Tuning cotton, the micropore tuning cotton for Mid Frequency tuning, the membrane structure tuning cotton for high band tuning, described ultra micro
The aperture of hole tuning cotton is 0.03～0.05mm, and the aperture of described micropore tuning cotton is 0.1～0.5mm, described film knot
The aperture of structure tuning cotton is 0.8～1.5mm, and barrier film rate is 50～80%；Its processing technology is as follows:
Step (1), raw material is carried out physics cutting formation and treats hot pressing sheet material by the compression factor according to raw material, treats hot pressing sheet material
Thickness is 2～30mm；
Step (2), the thickness according to treating hot pressing sheet material sets the pressure of hot press, hot pressing time, temperature, frock parameter,
Carry out hot pressing；
Step (3), sheet material complete for step (2) hot pressing is naturally cooled to room temperature so as to solidify.
Step (4), it is 30mm that the sheet material that step (3) solidification is completed adopts measuring head diameter, precision is the thickness of 0.01mm
Degree instrument carries out Thickness sensitivity；
Step (5), is packed by the sheet material of step (4) Thickness sensitivity.
2. tuning cotton according to claim 1 and its processing technology are it is characterised in that in described step (1)
Raw material is polyurethane sponge or tripolycyanamide sponge；The raw material wherein making the employing of ultramicropore tuning cotton is tripolycyanamide sea
Silk floss, makes micropore tuning cotton, the raw material of membrane structure tuning cotton employing is polyurethane sponge.
3. tuning cotton according to claim 1 and its processing technology are it is characterised in that pressure in described step (1)
Contracting ratio is 1:1～15:1.
4. tuning cotton according to claim 1 and its processing technology are it is characterised in that pressure in described step (2)
Power scope is 10～300kg, hot pressing time scope is 5～90s, temperature is 180～300 DEG C, frock is 0.1～6mm,
Described pressure, hot pressing time, temperature, frock all increase with the increase treating hot pressing sheet thickness.
5. tuning cotton according to claim 4 and its processing technology are it is characterised in that described frock refers to through hot pressing
The thickness reaching needed for sheet material afterwards.
6. tuning cotton according to claim 1 and its processing technology are it is characterised in that consolidating in described step (3)
During change, the hardening time of the sheet material with polyurethane sponge as raw material as 6h, with tripolycyanamide sponge as raw material
The hardening time of sheet material is 72h, and the sheet material with tripolycyanamide sponge as raw material can produce resilience during solidification.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610241130.3A CN106358132B (en) | 2016-04-19 | 2016-04-19 | A kind of manufacture craft of tuning cotton |
| CN201910507670.5A CN110248305B (en) | 2016-04-19 | 2016-04-19 | Tuning cotton and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610241130.3A CN106358132B (en) | 2016-04-19 | 2016-04-19 | A kind of manufacture craft of tuning cotton |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910507670.5A Division CN110248305B (en) | 2016-04-19 | 2016-04-19 | Tuning cotton and manufacturing process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106358132A true CN106358132A (en) | 2017-01-25 |
| CN106358132B CN106358132B (en) | 2019-09-17 |
Family
ID=57843192
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610241130.3A Active CN106358132B (en) | 2016-04-19 | 2016-04-19 | A kind of manufacture craft of tuning cotton |
| CN201910507670.5A Active CN110248305B (en) | 2016-04-19 | 2016-04-19 | Tuning cotton and manufacturing process thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910507670.5A Active CN110248305B (en) | 2016-04-19 | 2016-04-19 | Tuning cotton and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106358132B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110191386A (en) * | 2019-05-31 | 2019-08-30 | 歌尔科技有限公司 | A kind of external earphone |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0729289A2 (en) * | 1995-02-23 | 1996-08-28 | Teijin Limited | Speaker damper and production method thereof |
| CN102967042A (en) * | 2012-11-29 | 2013-03-13 | 株洲时代新材料科技股份有限公司 | Sound-absorbing composite and preparation method thereof |
| CN104853303A (en) * | 2015-04-14 | 2015-08-19 | 歌尔声学股份有限公司 | Method for preparing silica gel diaphragm and silica gel diaphragm |
| CN105244017A (en) * | 2015-11-19 | 2016-01-13 | 滨州市鸿泰顺意工贸有限公司 | Sound-absorbing cotton making process |
| CN105430589A (en) * | 2015-10-30 | 2016-03-23 | 歌尔声学股份有限公司 | Sound absorbing assembly and manufacturing method thereof |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5504281A (en) * | 1994-01-21 | 1996-04-02 | Minnesota Mining And Manufacturing Company | Perforated acoustical attenuators |
| JP2001302991A (en) * | 2000-04-20 | 2001-10-31 | Lintec Corp | Adhesive tape for painting |
| CN101742371A (en) * | 2008-11-12 | 2010-06-16 | 潍坊歌尔电子有限公司 | Microphone capable of suppressing wind noise |
| CN201450572U (en) * | 2009-07-16 | 2010-05-05 | 徐江 | Sound box |
| EP2424270B1 (en) * | 2010-08-23 | 2014-05-21 | Knowles Electronics Asia PTE. Ltd. | Loudspeaker system with improved sound |
| CN203181224U (en) * | 2013-03-18 | 2013-09-04 | 东莞市佳宏通讯科技有限公司 | Automatic sticking structure for loudspeaker damping cloth |
| CN203233522U (en) * | 2013-04-26 | 2013-10-09 | 易力声科技(深圳)有限公司 | In-ear earphone |
| CN203554661U (en) * | 2013-10-30 | 2014-04-16 | 周建国 | Earphone |
| CN204539462U (en) * | 2015-03-24 | 2015-08-05 | 歌尔声学股份有限公司 | Microspeaker |
| CN204795558U (en) * | 2015-06-09 | 2015-11-18 | 惠阳东亚电子制品有限公司 | Audio amplifier is with passive low frequency radiation |
| CN204733337U (en) * | 2015-06-29 | 2015-10-28 | 中山奥凯华泰电子有限公司 | The sound-producing device of sound mechanism is regulated with armstrong's patent |
| CN105007551B (en) * | 2015-08-13 | 2017-04-19 | 深圳市韶音科技有限公司 | Method for improving sound quality of bone conduction earphone and bone conduction earphone |
| US9743189B2 (en) * | 2016-01-05 | 2017-08-22 | Apple Inc. | Microspeaker with improved high frequency extension |
-
2016
- 2016-04-19 CN CN201610241130.3A patent/CN106358132B/en active Active
- 2016-04-19 CN CN201910507670.5A patent/CN110248305B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0729289A2 (en) * | 1995-02-23 | 1996-08-28 | Teijin Limited | Speaker damper and production method thereof |
| CN102967042A (en) * | 2012-11-29 | 2013-03-13 | 株洲时代新材料科技股份有限公司 | Sound-absorbing composite and preparation method thereof |
| CN104853303A (en) * | 2015-04-14 | 2015-08-19 | 歌尔声学股份有限公司 | Method for preparing silica gel diaphragm and silica gel diaphragm |
| CN105430589A (en) * | 2015-10-30 | 2016-03-23 | 歌尔声学股份有限公司 | Sound absorbing assembly and manufacturing method thereof |
| CN105244017A (en) * | 2015-11-19 | 2016-01-13 | 滨州市鸿泰顺意工贸有限公司 | Sound-absorbing cotton making process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110191386A (en) * | 2019-05-31 | 2019-08-30 | 歌尔科技有限公司 | A kind of external earphone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106358132B (en) | 2019-09-17 |
| CN110248305B (en) | 2021-07-09 |
| CN110248305A (en) | 2019-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204498371U (en) | Speaker diaphragm and be provided with the loud speaker of this oscillating plate | |
| CN102724605A (en) | Virtual bass enhancement processing method | |
| CN204795558U (en) | Audio amplifier is with passive low frequency radiation | |
| CN204392531U (en) | Microphone device | |
| CN106358132A (en) | Tone tuning cotton and manufacturing process thereof | |
| CN206585739U (en) | A kind of bass boosting sound box | |
| CN206620288U (en) | Sound-producing device module | |
| CN103306049A (en) | Preparation method of acupuncturing 3D sound-absorbing body | |
| CN203618111U (en) | Loudspeaker with multi-layer rear cavity | |
| CN204465857U (en) | Dynamic iron unit | |
| CN106535015A (en) | Microphone channel structure | |
| CN207802339U (en) | A kind of sound-producing device module | |
| CN206640790U (en) | A kind of dual-drive speaker for tablet personal computer | |
| CN202617336U (en) | Loudspeaker diaphragm and dome loudspeaker | |
| EP2444964B1 (en) | Method for manufacturing a sound absorbing body and resulting sound absorbing body | |
| CN205946128U (en) | Many passive benzvalene form bass enhancement audio amplifiers | |
| CN206272797U (en) | A kind of microphone channel structure | |
| CN101778324A (en) | Loudspeaker vibration sound film | |
| CN203813949U (en) | Ultra-wideband composite diaphragm without adhesive layer | |
| CN203393862U (en) | Wideband sound absorbing wall | |
| CN203912177U (en) | Loudspeaker module | |
| CN2938664Y (en) | Multi-mode super-bass loudspeaker box | |
| CN203872333U (en) | In-ear earphone horn | |
| CN108238775A (en) | A kind of preparation method of loud speaker sound-absorbing material | |
| CN204305328U (en) | A kind of diaphragm structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170125 Assignee: Tianjin Yuanhaixing Sponge Co., Ltd. Assignor: Yin Donghai Contract record no.: X2019990000261 Denomination of invention: Manufacturing process of tone tuning cotton Granted publication date: 20190917 License type: Common License Record date: 20191219 |