WO2006001292A1 - スピーカ用振動板の生産設備、それを用いたスピーカ用振動板の製造法およびスピーカ用振動板 - Google Patents
スピーカ用振動板の生産設備、それを用いたスピーカ用振動板の製造法およびスピーカ用振動板 Download PDFInfo
- Publication number
- WO2006001292A1 WO2006001292A1 PCT/JP2005/011413 JP2005011413W WO2006001292A1 WO 2006001292 A1 WO2006001292 A1 WO 2006001292A1 JP 2005011413 W JP2005011413 W JP 2005011413W WO 2006001292 A1 WO2006001292 A1 WO 2006001292A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- speaker
- manufacturing
- pressure
- compressed air
- Prior art date
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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
Definitions
- Speaker diaphragm production equipment speaker diaphragm manufacturing method using the same, and speaker diaphragm
- the present invention relates to a speaker diaphragm used in various types of audio equipment, and more particularly to a production facility for a diaphragm made of resin and a method for manufacturing a speaker diaphragm.
- FIG. 8 is a cross-sectional view showing a speaker diaphragm using this type of conventional grease.
- the diaphragm 87 has a hole for fitting and coupling a voice coil (not shown) at the center, and an edge portion which is a coupling portion for coupling the diaphragm 87 to a frame (not shown) on the periphery.
- the structure with 89 which is the most common configuration.
- a method of manufacturing a speaker diaphragm using such a resin those having a relatively large diameter and a large thickness are manufactured by an injection molding method.
- the injection molding method can handle complex shapes with high accuracy, but it is difficult to mold thin ones, and it is long and requires a long molding time, resulting in poor productivity. There is a problem.
- a method of molding with a mold using a resin film is generally used.
- a method of forming a resin film using a mold there is a method using a pair of male and female molds processed to form a resin film into a predetermined diaphragm shape, There is a method that performs pressure forming or vacuum forming using a single mold that has been processed to form a diaphragm shape.
- FIG. 9 is a manufacturing process diagram showing a conventional method for manufacturing a speaker diaphragm in which pressure forming is performed using a single mold.
- FIG. 10 is a block diagram showing a conventional speaker diaphragm production facility 300.
- a conventional production facility includes a mold 8 that forms a diaphragm in a predetermined shape, and
- a discharge valve 5 which is a discharger of compressed air.
- the conventional production facility 300 includes a booster 1, a supply air 2, a booster 1, a pressure control valve 4, a discharge valve 5, a supply air 6, a stage 7, a mold 8, a heater 9, It has a temperature sensor 10, a heating block 11, and a pressure sensor 12.
- the conventional method for manufacturing a speaker diaphragm that performs pressure-air forming using the above-mentioned one mold while pressing has the following problems.
- a sheet-shaped film prepared in advance It is difficult to achieve complex shapes and precision because of the molding of rumming material.
- strict management of the molding time and molding temperature was necessary.
- the present invention solves the above-mentioned problems, and even a diaphragm having a complicated shape can be molded with high accuracy without causing problems such as tearing, improving performance as a speaker and good productivity.
- An object of the present invention is to provide an excellent speaker diaphragm that can be compatible.
- a speaker diaphragm production facility and a speaker diaphragm manufacturing method using the same include a speaker diaphragm that forms a film by pressure forming and obtains the diaphragm.
- this production facility when a sheet-like film material is molded along a mold, the pressure and flow rate of compressed air are controlled in multiple stages.
- the pressure and flow rate of the compressed air at the time of pressure forming are controlled stepwise to form a sheet-like film material.
- the pressure and flow rate of the compressed air at the time of pressure forming are controlled stepwise to form a sheet-like film material.
- FIG. 1 is a block diagram showing a diaphragm production facility according to an embodiment of the present invention.
- FIG. 2 is a manufacturing process diagram of a diaphragm according to an embodiment of the present invention.
- FIG. 3 is a manufacturing process diagram of a diaphragm according to another embodiment of the present invention. 4] FIG. 4 is a cross-sectional view of the diaphragm according to the embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a speaker according to an embodiment of the present invention.
- FIG. 6 is a cross-sectional view of an essential part of the electronic apparatus in one embodiment of the present invention.
- FIG. 7 is a cross-sectional view of an apparatus according to an embodiment of the present invention.
- FIG. 8 is a cross-sectional view of a conventional diaphragm.
- FIG. 9 is a manufacturing process diagram of a conventional diaphragm.
- FIG. 10 is a block diagram showing a conventional diaphragm production facility.
- the pressurization process is stepwise by using the production equipment having the multistage pressurization control device according to the present invention.
- the present invention relates to a manufacturing method for forming a speaker diaphragm while controlling. By the manufacturing method of the present invention, even a complicated diaphragm shape can be molded with high accuracy.
- the multistage pressurization control apparatus is an apparatus that can control the pressure and flow rate of compressed air in multiple stages.
- a method of multi-step control it can be set freely, such as a method of gradually lowering without being limited to a method of increasing step by step, or repeating high and low, and according to the control pattern!
- the optimal pattern can be set according to the characteristics of the material to be molded. In the following description, the most general step-by-step control will be mainly described.
- the manufacturing method of the present invention it is possible to eliminate the tearing of the sheet-like film material, and it is possible to realize improvement in the dimensional and shape stability, quality and reliability of the diaphragm.
- Sarako can realize good characteristics such as sound pressure frequency characteristics and distortion characteristics of speakers using these diaphragms. Furthermore, since the thickness of the diaphragm can be set thin, a diaphragm suitable for downsizing and high sound pressure of the speaker can be obtained.
- the production equipment of the present invention can control the pressure and flow rate of the compressed air according to the physical properties and moldability of the film material to be used, so that it can be molded without difficulty and the residual stress can be reduced. be able to. Therefore, it is possible to eliminate the tearing of the sheet-like film material and reduce the springback force to return to the original sheet shape, thereby reducing the size of the diaphragm. Improvements in method, shape stability, quality and reliability can be realized.
- the present invention can provide an excellent speaker diaphragm capable of realizing improvement in performance and quality, and further can provide an electronic device or apparatus equipped with these speakers. Target value is very great.
- FIG. 1 is a block diagram showing speaker diaphragm production equipment 100 according to Embodiment 1 of the present invention. The same symbols are used for elements having the same functions as conventional equipment.
- a production facility 100 includes a mold 8 that forms at least a diaphragm 17 in a predetermined shape, a discharge valve 5 that is a discharger of compressed air, and a multistage pressurization control device 13. Is included.
- the difference between the production facility 100 and the conventional production facility 300 is that a multistage pressurization control device 13 capable of controlling the pressure of compressed air is provided.
- the manufacturing equipment 100 of the present embodiment includes a booster 1, supply air 2, booster 3, discharge valve 5, supply air 6, stage 7, mold 8, heater 9, temperature sensor 10, heating block 1 1 A pressure sensor 12 and a multi-stage pressurization control device 13 capable of controlling the pressure of the compressed air.
- the production facility 100 includes the multi-stage pressurization control device 13 to arbitrarily set the pressure of the compressed air during the injection of the compressed air. Can do. That is, the pressure and pressurization time can be freely adjusted.
- step S211 a sheet-like film material is prepared as a vibration plate material.
- step S201 the mold 8 and the heating block 1 are monitored with the temperature sensor 10.
- step S202 the prepared sheet-like film material is staged in the production facility 100.
- step S203 the stage is heated with the film material heated by heating the mold.
- steps S204 to S206 molding is performed along the mold 8 by gradually increasing the pressure using the air pressure of the supply air 6.
- the pressure sensor 12 is used for motoring and the pressure is maintained at an appropriate level for each stage.
- step S207 the mold 8 is cooled.
- step 208 the mold 8 is cooled while monitoring the temperature with the temperature sensor 10, and the mold is opened when the shape of the formed film is stabilized.
- step 209 the diaphragm molded article is taken out by releasing from the mold 8.
- the outer shape of the diaphragm is punched by a punching die to obtain the diaphragm 17.
- the compressed air pressure is always maintained at a constant value, whereas the manufacturing method of the first embodiment is used to compress the compressed air. Molding is performed by controlling the pressure stepwise.
- the primary compression is performed at a low pressure. Inject air, then inject secondary compressed air at medium pressure, then inject tertiary compressed air at high pressure, gradually increase the pressure, and step by step control Is effective.
- breakage is likely to occur by controlling the pressure of compressed air in multiple stages.
- the load applied to the material can be reduced and the material can be prevented from breaking.
- the temperature control of the compressed air is more effective by setting the optimum temperature for the material to be molded while interlocking with the pressure of the compressed air, and the molding is performed with higher accuracy. It becomes possible.
- the material temperature can be further set to an optimum value by providing step S222 for heating and forming the film before the pressure forming.
- step S222 for heating and forming the film before the pressure forming.
- a method of raising the temperature of the film material by means of heating with a mold that is, a heater for heating the mold can be used.
- a preheating step may be provided in advance, and a film material may be directly heated using an infrared heating device, a hot air heating device, or the like.
- the manufacturing method in which the pressure of compressed air is gradually increased in three stages has been described.
- the present invention is not limited to this embodiment, and it is effective if the pressure of compressed air is two or more. It is.
- the multi-step control method for the pressure of the compressed air can be freely set to be a method of gradually decreasing without being limited to a method of gradually increasing the pressure step by step or repeating the height. It is desirable to set the control pattern to an optimum pattern according to the characteristics of the material to be molded.
- the manufacturing method of the second embodiment has the same effect as the method of forming by controlling the pressure of the compressed air in steps.
- the multistage pressurization control device 13 is used to control the flow rate of the compressed air in multiple stages instead of controlling the pressure in multiple stages. In other words, it is a manufacturing method in which the pressurization time is changed and controlled under a constant pressure.
- the production facility 100 is a production facility that uses the multistage pressurization control device 13 to perform the flow rate control step by step.
- compressed air having different pressures is injected in steps S204 to S206.
- compressed air having different flow rates is injected in steps S204 to S206. Since controlling the flow rate changes the holding time at a predetermined pressure, the predetermined pressure is applied for a different time in each of steps S204 to S206.
- the pressure and flow rate of compressed air can be finely controlled according to the physical properties and formability of the film material to be processed. I can do it. As a result, even a thin film can be formed without difficulty and the residual stress can be reduced.
- the maximum pressure of the compressed air is set to 0.8 MPa or more for molding. Therefore, it is possible to form a sheet-like film material more strongly along the mold, and it is possible to accurately form even complex and deep diaphragm shapes. Stability can also be improved.
- a cooling device may be provided in the mold.
- the thickness of the diaphragm is between 3 ⁇ m and 500 ⁇ m, if it is thin, a great effect can be obtained on material breakage. If it is thick, its formability and productivity are high. Has the effect of improving
- injection molding is more suitable than film molding.
- the heating temperature at the time of forming the diaphragm is preferably 100 ° C or higher and 400 ° C or lower.
- the cooling temperature at the time of forming the diaphragm is preferably 80 ° C or higher and 300 ° C or lower. [0080] This is a temperature range in which the shape of the diaphragm molded using the film material can be stably maintained, and after the mold force is taken out, the shape after molding cannot be retained by the springback. This is the temperature range necessary to bring out the performance of the diaphragm after molding.
- the material of the diaphragm is produced by using the production method of the present invention for a film mainly composed of wholly aromatic polyimide resin or a film mainly composed of polyethylene naphthalate resin.
- the method can have a great effect.
- Film materials using engineering plastics such as a film mainly composed of wholly aromatic polyimide resin and a film material mainly composed of polyethylene naphthalate resin are generally very excellent materials as acoustic materials. It is. However, the molding process is very difficult, and the material has poor moldability and productivity, so that it has been difficult to use as a diaphragm in the past. By applying the manufacturing method of the present invention to such a material, its moldability and productivity are greatly improved, and performance as a diaphragm and productivity can be improved.
- the material can be rapidly cooled, the cooling time can be shortened to improve the cooling efficiency, and the productivity of the diaphragm can be improved.
- the material can be gradually cooled, and the crystallization of the material can be stabilized, so that excellent physical properties as a diaphragm can be ensured.
- Embodiment 3 an example of manufacturing a speaker diaphragm using the present invention will be described.
- FIG. 3 shows speaker vibrations obtained by the manufacturing method described in the first embodiment of the present invention. Board 17.
- a sheet-shaped film material is molded by controlling the pressure and flow rate of compressed air in stages by the method for manufacturing a speaker diaphragm of the present invention. It was possible to obtain a diaphragm having a complicated shape and a deep shape.
- the manufacturing method of the present invention is applied using a film mainly composed of wholly aromatic polyimide resin or an engineering plastic film mainly composed of polyethylene naphthalate resin as the material of the diaphragm.
- a more reliable diaphragm can be obtained by manufacturing the diaphragm.
- Embodiment 4 an example will be described in which a speaker for a speaker is manufactured using the manufacturing method described in Embodiment 1 or 2 of the present invention, and a speaker is manufactured using the diaphragm 17.
- FIG. 5 shows a cross-sectional view of a speaker according to an embodiment of the present invention.
- a magnetized magnet 51 is sandwiched between an upper plate 52 and a yoke 53 to constitute a magnetic circuit 54.
- the frame 56 is coupled to the yoke 53 of the magnetic circuit 54, the diaphragm 57 of the present invention is bonded to the peripheral portion of the frame 56, and the voice coil 58 for driving the diaphragm 57 is coupled to the diaphragm 57. is doing.
- the voice coil 58 is coupled so as to fit into the magnetic gap 55 of the magnetic circuit 54 to constitute a speaker.
- the diaphragm 17 is manufactured using the manufacturing method described in the first or second embodiment. In other words, even with complex and deep diaphragms, the dimensional accuracy is high and the film material is not torn. .
- the speaker can achieve low distortion and high linearity.
- a high performance speaker capable of reproducing a favorable sound quality can be realized.
- the usage range of the diaphragm 17 is not limited to the speaker. Any converter can be used.
- Embodiment 5 an electronic device on which the speaker diaphragm manufactured in Embodiment 3 is mounted will be described.
- FIG. 6 shows a cross-sectional view of a main part of a mobile phone that is an electronic apparatus according to an embodiment of the present invention. That is, a mobile phone 80 equipped with a speaker 30 that is an electroacoustic change is shown.
- the cellular phone 80 includes a speaker 30 on which the speaker diaphragm manufactured in the third embodiment is mounted, and an electronic circuit 40 including a means for amplifying an electric signal input to the speaker 30.
- Each component and module such as a display module 60 such as a liquid crystal is mounted inside the outer case 70.
- FIG. 7 shows a cross-sectional view of an automobile 90, which is an apparatus including moving means according to an embodiment of the present invention.
- an automobile 90 is configured by incorporating a speaker 30 mounted with the speaker diaphragm produced in Embodiment 3 into a rear tray.
- a diaphragm using a film material having excellent heat resistance can be formed. Therefore, it is possible to realize a speaker suitable for being mounted on an automobile having a severe use environment.
- the loudspeaker diaphragm according to the present invention is a diaphragm for an electroacoustic transducer and an electric force such as a spin force used in various acoustic devices that require high sound quality and improved productivity and quality of the diaphragm. It can also be applied to applications such as acoustic transducers, various electronic devices, and various devices.
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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)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/568,556 US20080000716A1 (en) | 2004-06-28 | 2005-06-22 | Production Facility for Speaker Diaphragm, Method of Manufacturing Speaker Diaphragm Using the Production Facility, and Speaker Diaphragm |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004189175A JP2006013986A (ja) | 2004-06-28 | 2004-06-28 | スピーカ用振動板の製造方法およびこの製造方法によるスピーカ用振動板ならびにこのスピーカ用振動板を用いたスピーカおよび電子機器および装置 |
JP2004-189175 | 2004-06-28 | ||
JP2004189174A JP2006013985A (ja) | 2004-06-28 | 2004-06-28 | スピーカ用振動板の生産設備およびこの生産設備により生産されたスピーカ用振動板およびこのスピーカ用振動板を用いたスピーカ |
JP2004-189174 | 2004-06-28 |
Publications (1)
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WO2006001292A1 true WO2006001292A1 (ja) | 2006-01-05 |
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ID=35781758
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PCT/JP2005/011413 WO2006001292A1 (ja) | 2004-06-28 | 2005-06-22 | スピーカ用振動板の生産設備、それを用いたスピーカ用振動板の製造法およびスピーカ用振動板 |
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US (1) | US20080000716A1 (ja) |
WO (1) | WO2006001292A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106060754A (zh) * | 2016-06-30 | 2016-10-26 | 陈定五 | 灯具微孔反射板在生产喇叭振动膜上的应用及其生产方法 |
WO2022110374A1 (zh) * | 2020-11-27 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | 一种音膜成型装置及成型方法 |
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CN101304622A (zh) * | 2007-05-09 | 2008-11-12 | 富准精密工业(深圳)有限公司 | 电声装置的音膜结构及其制备方法 |
TWI461071B (zh) * | 2008-12-08 | 2014-11-11 | The Manufacturing Method of Composite Material Cantilever Type Chip Shock Absorber | |
CN105592397B (zh) * | 2013-10-19 | 2018-07-06 | 宁波高新区起兴机电有限公司 | 一种耳机振膜材料的制备方法 |
CN105763986B (zh) * | 2013-10-19 | 2018-09-25 | 宁波高新区起兴机电有限公司 | 一种耳机振膜材料的制备方法 |
TWI790680B (zh) * | 2021-07-13 | 2023-01-21 | 煌傑金屬複合材料科技股份有限公司 | 鋁基複合材料振膜的製造方法及其製品 |
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JPS55162696A (en) * | 1979-06-06 | 1980-12-18 | Matsushita Electric Ind Co Ltd | Manufacture for speaker diaphragm plate |
JPH03239098A (ja) * | 1990-02-16 | 1991-10-24 | Victor Co Of Japan Ltd | スピーカ用振動板の製造方法並びにその製造用金型 |
JPH06293056A (ja) * | 1992-12-03 | 1994-10-21 | Air Prod And Chem Inc | 耐浸透性容器の製造方法 |
JPH07101953B2 (ja) * | 1986-06-27 | 1995-11-01 | 宇部興産株式会社 | 音響機器用振動板 |
JPH08340593A (ja) * | 1995-06-12 | 1996-12-24 | Onkyo Corp | スピーカ用振動板及びその製造方法 |
JP2003220643A (ja) * | 2002-01-29 | 2003-08-05 | Nissan Motor Co Ltd | 中空体成形装置および中空体成形方法 |
JP2003276074A (ja) * | 2002-03-25 | 2003-09-30 | Nissha Printing Co Ltd | プレフォームフィルムの製造方法とプレフォームフィルムの製造装置 |
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US7104780B2 (en) * | 2003-03-21 | 2006-09-12 | Husky Injection Molding Systems Limited | Platen mounted post mold cooling apparatus and method |
US7112249B2 (en) * | 2003-09-30 | 2006-09-26 | General Motors Corporation | Hot blow forming control method |
US20070152379A1 (en) * | 2005-12-13 | 2007-07-05 | 2Phase Technologies, Inc. | Systems and methods for transforming reformable materials into solid objects |
-
2005
- 2005-06-22 US US11/568,556 patent/US20080000716A1/en not_active Abandoned
- 2005-06-22 WO PCT/JP2005/011413 patent/WO2006001292A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS55162696A (en) * | 1979-06-06 | 1980-12-18 | Matsushita Electric Ind Co Ltd | Manufacture for speaker diaphragm plate |
JPH07101953B2 (ja) * | 1986-06-27 | 1995-11-01 | 宇部興産株式会社 | 音響機器用振動板 |
JPH03239098A (ja) * | 1990-02-16 | 1991-10-24 | Victor Co Of Japan Ltd | スピーカ用振動板の製造方法並びにその製造用金型 |
JPH06293056A (ja) * | 1992-12-03 | 1994-10-21 | Air Prod And Chem Inc | 耐浸透性容器の製造方法 |
JPH08340593A (ja) * | 1995-06-12 | 1996-12-24 | Onkyo Corp | スピーカ用振動板及びその製造方法 |
JP2003220643A (ja) * | 2002-01-29 | 2003-08-05 | Nissan Motor Co Ltd | 中空体成形装置および中空体成形方法 |
JP2003276074A (ja) * | 2002-03-25 | 2003-09-30 | Nissha Printing Co Ltd | プレフォームフィルムの製造方法とプレフォームフィルムの製造装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN106060754A (zh) * | 2016-06-30 | 2016-10-26 | 陈定五 | 灯具微孔反射板在生产喇叭振动膜上的应用及其生产方法 |
WO2022110374A1 (zh) * | 2020-11-27 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | 一种音膜成型装置及成型方法 |
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