CN109819389B - Vibrating diaphragm forming die - Google Patents
Vibrating diaphragm forming die Download PDFInfo
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- CN109819389B CN109819389B CN201811629652.6A CN201811629652A CN109819389B CN 109819389 B CN109819389 B CN 109819389B CN 201811629652 A CN201811629652 A CN 201811629652A CN 109819389 B CN109819389 B CN 109819389B
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- width
- diaphragm
- vibrating diaphragm
- straight side
- forming die
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Abstract
The invention relates to a vibrating diaphragm forming die which comprises a vibrating diaphragm forming die seat and a die head matched with the vibrating diaphragm forming die seat, wherein the vibrating diaphragm forming die seat comprises a base and a corrugated rim forming part arranged on the base, the corrugated rim forming part comprises two long straight side parts arranged oppositely at intervals, two short straight side parts arranged oppositely and a corner part connecting the long straight side parts and the short straight side parts, and the width of the long straight side parts and/or the short straight side parts is gradually widened from the middle to the two ends. According to the diaphragm forming die provided by the invention, the width of the folded ring forming part is compensated, namely, the width of the straight edge part is gradually widened from the middle part to the two ends, so that when a diaphragm material with a larger shrinkage rate is formed, the structure can compensate the width of the inner diameter part of the folded ring of the diaphragm, the width of the curved surface of the folded ring of the whole diaphragm is kept consistent, and the problems of poor pure tone, asymmetric amplitude, poor performance and the like of the diaphragm are avoided.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of electroacoustic product processing molds, in particular to a vibrating diaphragm forming mold.
[ background of the invention ]
The diaphragm is an important component of the micro-speaker, which plays a crucial role in the sound reproduction performance of the micro-speaker, and determines the quality of the electrical-to-acoustic conversion of the speaker. The diaphragm is typically formed by placing the diaphragm between a forming die holder and a die head and then pressing the diaphragm at high temperature.
The whole curved surface width of the corrugated rim of the conventional diaphragm forming die structural design is consistent, and the defects of the structure are as follows: to the great vibrating diaphragm material of shrinkage factor after the shaping, can appear vibrating diaphragm edge internal diameter and contract, the straight line becomes the pitch arc, leads to edge width inconsistent problem, to conventional product, this will lead to its pure tone bad, the amplitude is asymmetric, the poor scheduling problem of performance.
Therefore, it is necessary to provide a new diaphragm forming mold to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a vibrating diaphragm forming die, which solves the technical problem that the width of a corrugated rim of a vibrating diaphragm manufactured by the vibrating diaphragm forming die in the related art is inconsistent.
In order to solve the technical problem, the invention provides a diaphragm forming die, which comprises a diaphragm forming die seat and a die head matched with the diaphragm forming die seat, wherein the diaphragm forming die seat comprises a base and a corrugated rim forming part arranged on the base, the corrugated rim forming part comprises two long straight side parts arranged at intervals oppositely, two short straight side parts arranged oppositely and a corner part connecting the long straight side parts and the short straight side parts, and the width of the long straight side parts and/or the short straight side parts is gradually widened from the middle to the two ends.
Preferably, the width of the long straight side portion gradually increases from the middle thereof to both ends, and the width of the short straight side portion is maintained from the middle thereof to both ends.
Preferably, the width of the long straight side portion is constant from the middle thereof to both ends thereof, and the width of the short straight side portion is gradually increased from the middle thereof to both ends thereof.
Preferably, the outer side of the long straight side portion and/or the short straight side portion is a straight side, the inner side of the long straight side portion and/or the short straight side portion is an arc side, and the distance from the arc side to the straight side gradually increases from the middle to the two ends.
The invention has the beneficial effects that: according to the diaphragm forming die provided by the invention, the width of the folded ring forming part is compensated, namely, the width of the straight edge part is gradually widened from the middle part to the two ends, so that when a diaphragm material with a larger shrinkage rate is formed, the structure can compensate the width of the inner diameter part of the folded ring of the diaphragm, the width of the curved surface of the folded ring of the whole diaphragm is kept consistent, and the problems of poor pure tone, asymmetric amplitude, poor performance and the like of the diaphragm are avoided.
[ description of the drawings ]
FIG. 1 is an exploded perspective view of a diaphragm forming mold according to the present invention;
fig. 2 is a front view of a diaphragm forming mold base according to the present invention.
[ detailed description ] embodiments
The present invention will be described in further detail with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the present invention provides a diaphragm forming mold 100, which includes a diaphragm forming mold base 1 and a mold head 2 matched with the diaphragm forming mold base 1, wherein the diaphragm forming mold base 1 and the mold head 2 are assembled, and a plastic material is pressurized at a high temperature to form a diaphragm.
The diaphragm forming mold base 1 comprises a base 11 and a corrugated rim forming part 12 arranged on the base 11, wherein the corrugated rim forming part 12 comprises two long straight edge parts 121 arranged oppositely at intervals, two short straight edge parts 122 arranged oppositely and a corner part 123 connected with the long straight edge parts 121 and the short straight edge parts 122. The region of the base 11 surrounded by the corrugated rim forming part 12 is a vibrating diaphragm dome forming region.
Since the diaphragm material with a large shrinkage rate shrinks when the diaphragm is formed, which causes the straight edge portion of the edge to bend, in order to improve the problem, the width of the long straight edge portion 121 of the present invention gradually widens from the middle thereof to the two ends, that is, the middle width a is smaller than the two ends width a, and the difference between the middle width and the two ends width is the compensation width. The structure can compensate the width size of the inner diameter of the corrugated ring of the vibrating diaphragm, so that the width of the curved surface of the corrugated ring of the whole vibrating diaphragm is kept consistent, and the problems of poor pure tone, asymmetric amplitude, poor performance and the like of the vibrating diaphragm can be avoided.
In the embodiment of the present invention, the width of the short straight side portion 122 is constant from the middle thereof to both ends. Of course, the width of the short straight-side portion 122 may also gradually increase from the middle thereof to both ends, the width of the long straight-side portion 121 may be kept constant from the middle thereof to both ends, or the widths of the long straight-side portion 121 and the short straight-side portion 122 may both gradually increase from the middle thereof to both ends, which may be selected according to actual needs, but this is all within the protection scope of the present invention.
Specifically, the outer side of the long straight edge portion 121 and/or the short straight edge portion 122 is a straight edge, and the inner side thereof is an arc edge, and the distance from the arc edge to the straight edge gradually increases from the middle to both ends.
The invention has the beneficial effects that: according to the diaphragm forming die provided by the invention, the width of the folded ring forming part is compensated, namely, the width of the straight edge part is gradually widened from the middle part to the two ends, so that when a diaphragm material with a larger shrinkage rate is formed, the structure can compensate the width of the inner diameter part of the folded ring of the diaphragm, the width of the curved surface of the folded ring of the whole diaphragm is kept consistent, and the problems of poor pure tone, asymmetric amplitude, poor performance and the like of the diaphragm are avoided.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a vibrating diaphragm forming die, its include vibrating diaphragm forming die seat and with vibrating diaphragm forming die seat complex mould head, a serial communication port, vibrating diaphragm forming die seat include the frame with set up in roll over ring shaping portion on the frame, roll over ring shaping portion including the long straight limit portion that two opposite intervals set up, two short straight limit portion that set up and connect long straight limit portion with the bight of short straight limit portion, long straight limit portion and/or the width of short straight limit portion widens gradually so that when the shaping vibrating diaphragm from wherein to both ends direction, can compensate the ring of rolling over of vibrating diaphragm internal diameter department width size, makes the ring of rolling over of vibrating diaphragm curved surface width keeps unanimous.
2. The mold for molding a diaphragm according to claim 1, wherein the width of the long straight side portion gradually increases from the middle thereof toward the two ends, and the width of the short straight side portion is constant from the middle thereof toward the two ends.
3. The mold for molding a diaphragm according to claim 1, wherein the width of the long straight side portion is constant from the middle thereof to both ends, and the width of the short straight side portion gradually increases from the middle thereof to both ends.
4. The mold for molding a diaphragm according to claim 1, wherein the long straight side portion and/or the short straight side portion has a straight side on an outer side and an arc side on an inner side, and a distance from the arc side to the straight side gradually increases from a middle to both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629652.6A CN109819389B (en) | 2018-12-28 | 2018-12-28 | Vibrating diaphragm forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629652.6A CN109819389B (en) | 2018-12-28 | 2018-12-28 | Vibrating diaphragm forming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109819389A CN109819389A (en) | 2019-05-28 |
| CN109819389B true CN109819389B (en) | 2021-05-14 |
Family
ID=66601502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811629652.6A Expired - Fee Related CN109819389B (en) | 2018-12-28 | 2018-12-28 | Vibrating diaphragm forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109819389B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021134247A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Diaphragm forming mold |
| WO2021134227A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Diaphragm forming die |
| WO2021134230A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Diaphragm forming mold |
| CN111918198B (en) * | 2020-07-06 | 2022-03-01 | 瑞声新能源发展(常州)有限公司科教城分公司 | Vibrating diaphragm forming process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201657289U (en) * | 2010-01-26 | 2010-11-24 | 歌尔声学股份有限公司 | Micro acoustic generator |
| CN104168533B (en) * | 2014-08-26 | 2018-11-09 | 歌尔股份有限公司 | Vibrating diaphragm molding die seat and include the mold base vibrating diaphragm molding die |
| CN204539451U (en) * | 2015-03-24 | 2015-08-05 | 歌尔声学股份有限公司 | The diaphragm of loudspeaker |
| CN105721996B (en) * | 2016-04-08 | 2020-01-14 | 深圳精拓创新科技有限公司 | Sound production structure unit, earphone comprising sound production structure unit and driving sound production method |
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2018
- 2018-12-28 CN CN201811629652.6A patent/CN109819389B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN109819389A (en) | 2019-05-28 |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210514 Termination date: 20211228 |