CN103391498A - Composite sound film structure and composite technology thereof - Google Patents
Composite sound film structure and composite technology thereof Download PDFInfo
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- CN103391498A CN103391498A CN2012101408451A CN201210140845A CN103391498A CN 103391498 A CN103391498 A CN 103391498A CN 2012101408451 A CN2012101408451 A CN 2012101408451A CN 201210140845 A CN201210140845 A CN 201210140845A CN 103391498 A CN103391498 A CN 103391498A
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- film
- retainer ring
- heat bonding
- pen
- bonding glue
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Abstract
The invention relates to the technical field of sound films, in particular to a composite sound film structure which comprises an engineering thin film and a composite sheet arranged at the bottom of the engineering thin film in a composite mode. A thin film fixing ring is formed at the edge of the bottom of the engineering thin film through heat bonding glue in a heat press mode. The thin film fixing ring is a PET thin film fixing ring or a PEN thin film fixing ring. Due to the fact that the PET thin film and the PEN thin film have the advantages of being easy to form, free of rust or oxidation, small in thickness, low in cost, convenient to operate and the like. Thus, compared with an existing composite sound film which is strengthened with a fixing ring or a paper ring, the PET thin film fixing ring or the PEN thin film fixing ring is used by the composite sound film, and the composite sound film has the advantages of being stable in performance, low in production cost, simple in production technology, small in thickness, stable in appearance, capable of not machining a third party and the like. In addition, the invention further discloses a composite technology of the composite sound film, wherein the composite technology is simple and low in production cost.
Description
Technical field
The present invention relates to sound membrane technology field, relate in particular to a kind of structure and combination process thereof of compound voice diaphragm.
Background technology
At present, the sound film that Microspeaker uses (also claim tibial membrane or vibrating reed, below describe general designation sound film) is generally following type structure:
1, combine with hot-forming machine hot-formingly with two or more thin-film material (such as engineering films such as PET, PEI, PEN, PEEK, PAR) is overlapping, then the semi-finished product sound film of forming is cut (die-cut) audio film list product.The shortcoming of this sound film is, due to the thickness of the thin-film material that generally is used as the sound film all very thin (several microns～tens microns between), so, its single sound film is very soft, also be easier to distortion, cause overall dimension unstable, inconvenient rear operation is produced use in enormous quantities, and it is also very little that the sound film bears power.
2, thin-film material (such as engineering films such as PET, PEI, PEN, PEEK, PAR) is hot-forming with hot-forming machine, again the semi-finished product sound film of forming is pasted on sound film part the glue-coated film of a slice, foil or veneer plate (this process is referred to as compound), then cut (die-cut) audio film list product.The shortcoming of this sound film is, owing to film, foil or veneer plate, doing compound, although making the sound film bear power increases, but due to compound be the larger materials of some density, therefore sound film own wt is increased greatly, sensitivity when the sound film is vibrated is influential, particularly veneer thickness is the same, but the quality of its diverse location and different types of wood (weight) alters a great deal, each characteristic and the sensitivity of the composite membrane of this kind structure is variant, particularly the veneer rear variation of making moist is larger, therefore be not suitable for promoting.
3, on the basis of above-mentioned two kinds of composite membranes again between its external diameter and external diameter zone add a becket or paper ring and reinforce, be commonly called as the band composite membrane.although this sound film has solved very soft shortcoming in the 1st kind of sound film by adding a retainer ring, but cost also increases greatly, particularly add becket (overwhelming majority adds copper ring at present), becket must be given the third party processing, and understand easy oxidation after the moulding of becket high temperature hot pressing and get rusty, simultaneously must frontly first to becket, divide direction and spraying glue and the loaded down with trivial details techniques such as dry hot-forming, increased simultaneously the structural thickness of sound film, small size to present Microspeaker pursuit, the design of thin thickness is an obstruction, make microminiaturization and the paper ring is comparatively unstable and more difficult.
Summary of the invention
The object of the invention is to provide for the deficiencies in the prior art a kind of stable performance, production cost than low, production technology is simple, thickness is little, the structure of the compound voice diaphragm of dimensional stability and combination process thereof.
To achieve these goals, the invention provides a kind of structure of compound voice diaphragm, comprise the engineering film, be compound in the composite sheet of described engineering film bottom, the bottom margin of described engineering film is hot-forming by heat bonding glue a film retainer ring, and described film retainer ring is the PET(PETG) film retainer ring or PEN(PEN) the film retainer ring.
Preferably, described composite sheet is the slim foamed sheet (TK-ONX-SHEET) of two-sided aluminizing paper tinsel.
Preferably, described composite sheet also can be adjustable sound paper.
Preferably, the thickness of described PET film retainer ring or PEN film retainer ring is 30～300 microns.
Preferably, described engineering film is TPU(thermoplastic polyurethane elastic rubber) film.
Preferably, described engineering film also can be the PEI(polyetherimide resin) film.
Correspondingly, the present invention also provides a kind of combination process of compound voice diaphragm, and this combination process comprises the following steps:
A, carry out PET film or PEN film hot-forming, then single face sprays heat bonding glue, after the heat bonding glue dries, the internal diameter of die-cut PET film retainer ring or PEN film retainer ring, then be coated with heat bonding glue one and put into faceup the relevant position of sound film molding mold;
B, with composite sheet single face spraying heat bonding glue, after the heat bonding glue dries, be die-cut into and need compound size, then be coated with heat bonding glue one and put into faceup the relevant position of sound film molding mold;
C, through on the film retainer ring of steps A and on the composite sheet through step B, cover a TPU film or PEI film, make the bottom of TPU film or PEI film prop up the heat bonding glue of film retainer ring and composite sheet, then by the extrusion forming of heating of hot-forming machine, enter the cooling down typing after completing the extrusion forming process of heating, pressure relief and the demoulding after cooling down typing, carry out external diameter with cutting die to PET film retainer ring or PEN film retainer ring after the demoulding die-cut.
Preferably, in described steps A, the temperature of PET film or PEN film hot compacting is 150～170 degree.
Preferably, heat in the described step C temperature of extrusion forming is that 100～110 degree, pressure are 6 kilograms/square centimeter.
Preferably, in described step C cooling down to reach temperature be 50～70 pressure relief while spending and the demouldings.
Beneficial effect of the present invention is: the structure of compound voice diaphragm of the present invention, it comprises the engineering film, is compound in the composite sheet of engineering film bottom, the bottom margin of engineering film is hot-forming by heat bonding glue a film retainer ring, and the film retainer ring is PET film retainer ring or PEN film retainer ring.Because PET film and PEN film have easy moulding, can not get rusty or oxidation, the characteristics such as thickness is little, cost is low, convenient working, therefore, compare with the compound voice diaphragm that existing employing becket or paper ring are reinforced, compound voice diaphragm of the present invention adopts PET film retainer ring or PEN film retainer ring, have stable performance, production cost than low, production technology is simple, thickness is little, dimensional stability, need not be to advantages such as third party's processing.In addition, the combination process of compound voice diaphragm of the present invention is simple, production cost is low.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1 compound voice diaphragm.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
please refer to Fig. 1, Fig. 2, Fig. 3, the invention provides a kind of structure of compound voice diaphragm, comprise engineering film 1, be compound in the composite sheet 2 of engineering film 1 bottom, the bottom margin of engineering film 1 is hot-forming by heat bonding glue 3 a film retainer ring 4, film retainer ring 4 makes the Stability Analysis of Structures of compound voice diaphragm integral body, be not easy to distortion, wherein, in the present embodiment, film retainer ring 4 is PET film retainer ring 4 or PEN film retainer ring 4, PET film retainer ring 4 or PEN film retainer ring 4 have stable performance, production cost is lower, production technology is simple, thickness is little, dimensional stability, need not be to advantages such as third party's processing.
In the present embodiment, composite sheet 2 is the slim foamed sheet of two-sided aluminizing paper tinsel, the density of slim foamed sheet (TK-ONX-SHEET) is very little and have very stable hardness, can anti-certain high temperature, be not subjected to humidity effect, after two-sided aluminizing paper tinsel, performance is more stable simultaneously, is well suited for doing the sound film composite material, also extremely be convenient to produce in enormous quantities, be conducive to the sound film the range expansion, improve the sound film bear power and sound film vibration life etc.
As preferred scheme, the thickness of PET film retainer ring 4 of the present invention or PEN film retainer ring 4 is 30～300 microns, so that sound membrane structure of the present invention is applied to Microspeaker.
In the present embodiment, engineering film 1 is the TPU film, the composite membrane that the TPU film can replace the engineering films such as PET, PEI, PEN, PEEK, PAR 1 to form, because this material of TPU can deliquescing under certain temperature, and can remain unchanged at normal temperatures, and have good elasticity and damping, therefore comparatively be suitable for and be the engineering film 1 of sound film.Wherein, the engineering film 1 in the present embodiment is provided with the outstanding limit 11 of annular, and composite sheet 2 is positioned at outstanding limit 11, and film retainer ring 4 is positioned at outside outstanding limit 11.
Corresponding to top product embodiments, the embodiment of the present invention also provides a kind of combination process of compound voice diaphragm, and this combination process comprises the following steps:
A, making film retainer ring 4, carry out PET film or PEN film hot-forming, then single face spraying heat bonding glue 3, after heat bonding glue 3 dryings, the internal diameter 41 of die-cut PET film retainer ring 4 or PEN film retainer ring 4, certainly, the internal diameter 41 of PET film retainer ring 4 or PEN film retainer ring 4 is matched with the outside on outstanding limit 11, then, one of the heat bonding glue 3 that is coated with of PET film retainer ring 4 or PEN film retainer ring 4 is faced up, put into the relevant position of sound film molding mold;
B, make composite sheet 2, with composite sheet 2 single face spraying heat bonding glue 3, after heat bonding glue 3 dryings, be die-cut into and need compound size, composite sheet 2 and the inboard on outstanding limit 11 are mated, then, composite sheet 2 is coated with one of heat bonding glue 3 to face up, put into the relevant position of sound film molding mold, make PET film retainer ring 4 or PEN film retainer ring 4 round composite sheet 2, and PET film retainer ring 4 or PEN film retainer ring 4 is positioned at same level with composite sheet 2, wherein, the composite sheet 2 of the present embodiment is the slim foamed sheet of two-sided aluminizing paper tinsel,
C, fabrication film 1, on the process film retainer ring 4 of steps A and on the composite sheet 2 through step B, cover a TPU film (the engineering film 1 that is the present embodiment is the TPU film), make the bottom of TPU film prop up the heat bonding glue 3 of film retainer ring 4 and composite sheet 2, then by the extrusion forming of heating of hot-forming machine, enter the cooling down typing after completing the extrusion forming process of heating, pressure relief and the demoulding after the cooling down typing, with cutting die, PET film retainer ring 4 or PEN film retainer ring 4 are carried out external diameter 42 after the demoulding die-cut, the production of namely completing sound film list product is compound.
As preferred scheme, in steps A, the temperature of PET film or PEN film hot compacting is 150～170 degree; The temperature of extrusion forming of heating in step C is that 100～110 degree, pressure are 6 kilograms/square centimeter; In step C, to reach temperature be 50～70 pressure relief while spending and the demouldings to cooling down.
The difference of the present embodiment and embodiment 1 is, engineering film 1 is the PEI film, to meet the demand of particular types loudspeaker.Other structure and the production technology of the present embodiment are identical with embodiment 1, do not repeat them here.
The difference of the present embodiment and embodiment 1 is, composite sheet 2 is adjustable sound paper, to meet the demand of particular types loudspeaker.Other structure and the production technology of the present embodiment are identical with embodiment 1, do not repeat them here.
Should be noted that finally; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although with reference to preferred embodiment, the present invention has been done to explain; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not break away from essence and the scope of technical solution of the present invention.
Claims (10)
1. the structure of a compound voice diaphragm, comprise the engineering film, be compound in the composite sheet of described engineering film bottom, it is characterized in that: the bottom margin of described engineering film is hot-forming by heat bonding glue a film retainer ring, and described film retainer ring is PET film retainer ring or PEN film retainer ring.
2. the structure of compound voice diaphragm according to claim 1, it is characterized in that: described composite sheet is the slim foamed sheet of two-sided aluminizing paper tinsel.
3. the structure of compound voice diaphragm according to claim 1, it is characterized in that: described composite sheet is adjustable sound paper.
4. the structure of compound voice diaphragm according to claim 1, it is characterized in that: the thickness of described PET film retainer ring or PEN film retainer ring is 30～300 microns.
5. the structure of the described compound voice diaphragm of according to claim 1 to 4 any one, it is characterized in that: described engineering film is the TPU film.
6. the structure of the described compound voice diaphragm of according to claim 1 to 4 any one, it is characterized in that: described engineering film is the PEI film.
7. the combination process of a compound voice diaphragm, is characterized in that, this combination process comprises the following steps:
A, carry out PET film or PEN film hot-forming, then single face sprays heat bonding glue, after the heat bonding glue dries, the internal diameter of die-cut PET film retainer ring or PEN film retainer ring, then be coated with heat bonding glue one and put into faceup the relevant position of sound film molding mold;
B, with composite sheet single face spraying heat bonding glue, after the heat bonding glue dries, be die-cut into and need compound size, then be coated with heat bonding glue one and put into faceup the relevant position of sound film molding mold;
C, through on the film retainer ring of steps A and on the composite sheet through step B, cover a TPU film or PEI film, make the bottom of TPU film or PEI film prop up the heat bonding glue of film retainer ring and composite sheet, then by the extrusion forming of heating of hot-forming machine, enter the cooling down typing after completing the extrusion forming process of heating, pressure relief and the demoulding after cooling down typing, carry out external diameter with cutting die to PET film retainer ring or PEN film retainer ring after the demoulding die-cut.
8. the combination process of compound voice diaphragm according to claim 7 is characterized in that: in described steps A, the temperature of PET film or PEN film hot compacting is 150～170 degree.
9. the combination process of compound voice diaphragm according to claim 7 is characterized in that: the temperature of the extrusion forming of heating in described step C is that 100～110 degree, pressure are 6 kilograms/square centimeter.
10. the combination process of compound voice diaphragm according to claim 7 is characterized in that: in described step C, to reach temperature be 50～70 pressure relief while spending and the demouldings to cooling down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101408451A CN103391498A (en) | 2012-05-08 | 2012-05-08 | Composite sound film structure and composite technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101408451A CN103391498A (en) | 2012-05-08 | 2012-05-08 | Composite sound film structure and composite technology thereof |
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| CN103391498A true CN103391498A (en) | 2013-11-13 |
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| CN2012101408451A Pending CN103391498A (en) | 2012-05-08 | 2012-05-08 | Composite sound film structure and composite technology thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320741A (en) * | 2014-10-22 | 2015-01-28 | 李亚宁 | Audio frequency device with graphene composite sound film |
| CN108430028A (en) * | 2018-04-03 | 2018-08-21 | 苏州倍声声学技术有限公司 | Vibrating diaphragm forming jig and forming method |
| CN115091122A (en) * | 2022-05-31 | 2022-09-23 | 东莞涌韵音膜有限公司 | Production process of L-shaped plastic support sound film |
-
2012
- 2012-05-08 CN CN2012101408451A patent/CN103391498A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320741A (en) * | 2014-10-22 | 2015-01-28 | 李亚宁 | Audio frequency device with graphene composite sound film |
| CN108430028A (en) * | 2018-04-03 | 2018-08-21 | 苏州倍声声学技术有限公司 | Vibrating diaphragm forming jig and forming method |
| CN108430028B (en) * | 2018-04-03 | 2024-04-23 | 苏州倍声声学技术有限公司 | Diaphragm forming jig and forming method |
| CN115091122A (en) * | 2022-05-31 | 2022-09-23 | 东莞涌韵音膜有限公司 | Production process of L-shaped plastic support sound film |
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Application publication date: 20131113 |