CN105142093A - BMC netty loudspeaker box mask including wood fibers and injection molding process - Google Patents
BMC netty loudspeaker box mask including wood fibers and injection molding process Download PDFInfo
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- CN105142093A CN105142093A CN201510553734.7A CN201510553734A CN105142093A CN 105142093 A CN105142093 A CN 105142093A CN 201510553734 A CN201510553734 A CN 201510553734A CN 105142093 A CN105142093 A CN 105142093A
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Abstract
The invention provides a BMC netty loudspeaker box mask including wood fibers, which is made by BMC plastic and wood fibers through injection molding in one time, wherein meshes of the netty loudspeaker box mask are through holes. The invention also provides an injection molding process for the BMC netty loudspeaker box mask including the wood fibers. According to the BMC netty loudspeaker box mask including the wood fibers, the plastic mesh panel includes the wood fibers, so that the original tone quality of a loudspeaker can be greatly reserved, and the plastic material also can play a good role in protecting the loudspeaker.
Description
Technical field
The present invention relates to a kind of netted sound box cover of BMC containing wood-fibred and injection molding process.
Background technology
Widely used sound box mesh cover in the market, large multiaction also rests in dust-proof, attractive in appearance and protective effect.But because guard has the density degree of different materials, thickness and mesh different, therefore, can have a certain impact to the sound that audio amplifier inside trumpet sends, especially guard has certain attenuation to treble portion.On the material of guard, be exactly nothing but various fiber material, or metal, plastics.Softer fiber material, less on the impact of sound, but relative, also weaker to the protection of loudspeaker unit under certain situation, once pierce through or destroy sound very influenced.Harder metal, plastics etc., be substantially exactly with dust-proof, protected as main application, many times do not relate to and sound quality directly considered.
And the making of existing plastics or sound box mesh cover goods is not one-shot forming, plastic net cover, on plastic board shaping in advance, carries out punching press boring; Metal net mask generally takes etching and processing method to carry out hole processing, processing method poor stability, not environmentally.And the hole of netted audio amplifier cover reaches several ten thousand or even several ten thousand, adopt this secondary operations technique, production efficiency is low, and cost is higher.
Summary of the invention
The object of the invention is to overcome defect of the prior art, a kind of netted sound box cover of BMC containing wood-fibred and injection molding process are provided.
For achieving the above object, the invention provides a kind of netted sound box cover of BMC containing wood-fibred, it is by BMC plastics and wood-fibred single injection-molded, and the mesh of netted sound box cover is through hole.
The present invention also provides the injection molding process of the above-mentioned netted sound box cover of BMC containing wood-fibred, comprises the steps:
1) mould is cleared up, matched moulds after upper/lower die inner surface uniform application release agent; Release agent is beneficial to the demoulding and ensures that die surface is bright and clean;
2) by after liquid thermosetting resin and wood pulp Homogeneous phase mixing, short glass fiber is added according to certain ratio, and the formation premix that stirs, then premix is stored in resin container for subsequent use, and heating and thermal insulation and Keep agitation are carried out to the premix in resin container; Tank body holding temperature is set, to ensure the mobility of resin; Do not stop in tank body in heating process to stir, precipitate to prevent fiber;
3) curing agent is stored in curing agent tank for subsequent use;
4) by injector injection mo(u)lding: arrange injection parameters, described injection parameters comprises: pressure parameter, time parameter, temperature parameter; Premix and curing agent input in the barrel of injector from resin container and curing agent tank by conveying pipeline respectively, helical screw agitator in barrel makes premix and curing agent be uniformly mixed to form compound, by injection head, compound is injected in mould gum-injecting port again, pressurize, cooling, curing molding, goods are taken out in last die sinking.
Preferably, described upper/lower die matched moulds forms the injecting cavity being used for the netted sound box cover of injection moulding horizontal; Described upper/lower die is respectively equipped with puts draw point for the formation of netted the perpendicular of face shield mesh, and mold perpendicular puts draw point and the perpendicular of bed die puts draw point one_to_one corresponding; The mold of matched moulds state erects puts that draw point and corresponding bed die are perpendicular to be put draw point and connect and the coaxial heart at die parting line place.
Preferably, described injector is provided with the pressure control device for controlling injection pressure.
Preferably, by vacuum aid grouting, the premix after stirring is sucked in resin container.
Preferably, by vacuum aid grouting, curing agent is sucked in curing agent tank.
Preferably, in injection moulding process, mould is heated, shorten curing time.
The present invention is containing the netted sound box cover of BMC of wood-fibred, and its plastic cement mesh sheet contains wood fibre, and both can retain the original tonequality of audio amplifier largely, its plastic cement material can play a very good protection to loudspeaker again.
The present invention is containing the injection molding process of the netted sound box cover of BMC of wood-fibred, in advance by the BMC raw material of liquid state and wood-fibred Homogeneous phase mixing, the preset draw point identical with mesh quantity of dies cavity (injecting cavity) thickness direction (reserved mesh position), is injected into compound in mould and forms overall composite mesh sound box mesh cover.Utilize the netted sound box cover that this technique is made, intensity is high, and resistance to ag(e)ing is good.And present invention process solves a shaping difficult problem for netted sound box cover, the cost needed for operational process of craft is low, man-hour is few, can effectively enhance productivity, and the time of an injection moulding product needed is only several seconds to tens seconds, without the need to carrying out secondary operations.Production cost saves 55%, production process environmental sound, without toxic gas volatilization, plays a good role to environmental protection.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of present invention process equipment;
Fig. 2 is the schematic diagram of mould.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The technical scheme that the present invention specifically implements is:
As shown in Figure 1 and Figure 2, the invention provides a kind of netted sound box cover of BMC containing wood-fibred, it is by BMC plastics and wood-fibred single injection-molded, and the mesh of netted sound box cover is through hole.
The present invention also provides the injection molding process of the above-mentioned netted sound box cover of BMC containing wood-fibred, comprises the steps:
1) mould 1 is cleared up, matched moulds after upper/lower die 11,12 inner surface uniform application release agent; Release agent is beneficial to the demoulding and ensures that die surface is bright and clean;
2) by after liquid thermosetting resin and wood pulp Homogeneous phase mixing, short glass fiber is added according to certain ratio, and the formation premix that stirs, then premix is stored in resin container 2 for subsequent use, and heating and thermal insulation and Keep agitation are carried out to the premix in resin container 2; Tank body holding temperature is set, to ensure the mobility of resin; Do not stop in tank body in heating process to stir, precipitate to prevent fiber;
3) curing agent is stored in curing agent tank 3 for subsequent use;
4) by injector injection mo(u)lding: arrange injection parameters, described injection parameters comprises: pressure parameter, time parameter, temperature parameter; Premix and curing agent input in the barrel 5 of injector from resin container 2 and curing agent tank 3 by conveying pipeline 4 respectively, helical screw agitator in barrel 5 makes premix and curing agent be uniformly mixed to form compound, by injection head 6, compound is injected in mould 1 gum-injecting port again, pressurize, cooling, curing molding, goods are taken out in last die sinking.
Described upper/lower die 11,12 matched moulds forms the injecting cavity 13 being used for the netted sound box cover of injection moulding horizontal; Described upper/lower die 11,12 is respectively equipped with puts draw point 110,120 for the formation of the perpendicular of netted face shield mesh, and the perpendicular draw point 110 of putting of mold 11 puts draw point 120 one_to_one corresponding with the perpendicular of bed die 12; The mold of matched moulds state erects puts that draw point 110 and corresponding bed die are perpendicular to be put draw point 120 and connect and the coaxial heart at die parting line 14 place.
Described injector is provided with the pressure control device 7 for controlling injection pressure.
By vacuum aid grouting, the premix after stirring is sucked in resin container 2.
By vacuum aid grouting, curing agent is sucked in curing agent tank 3.
In injection moulding process, mould 1 is heated, shorten curing time.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1., containing the netted sound box cover of BMC of wood-fibred, it is characterized in that, by BMC plastics and wood-fibred single injection-molded, the mesh of netted sound box cover is through hole.
2. contain the injection molding process of the netted sound box cover of BMC of wood-fibred described in claim 1, it is characterized in that, comprise the steps:
1) mould is cleared up, matched moulds after upper/lower die inner surface uniform application release agent;
2) by after liquid thermosetting resin and wood pulp Homogeneous phase mixing, short glass fiber is added according to certain ratio, and the formation premix that stirs, then premix is stored in resin container for subsequent use, and heating and thermal insulation and Keep agitation are carried out to the premix in resin container;
3) curing agent is stored in curing agent tank for subsequent use;
4) by injector injection mo(u)lding: arrange injection parameters, described injection parameters comprises: pressure parameter, time parameter, temperature parameter; Premix and curing agent input in the barrel of injector from resin container and curing agent tank by conveying pipeline respectively, helical screw agitator in barrel makes premix and curing agent be uniformly mixed to form compound, by injection head, compound is injected in mould gum-injecting port again, pressurize, cooling, curing molding, goods are taken out in last die sinking.
3. injection molding process according to claim 2, is characterized in that, described upper/lower die matched moulds forms the injecting cavity being used for the netted sound box cover of injection moulding horizontal; Described upper/lower die is respectively equipped with puts draw point for the formation of netted the perpendicular of face shield mesh, and mold perpendicular puts draw point and the perpendicular of bed die puts draw point one_to_one corresponding; The mold of matched moulds state erects puts that draw point and corresponding bed die are perpendicular to be put draw point and connect and the coaxial heart at die parting line place.
4. injection molding process according to claim 3, is characterized in that, described injector is provided with the pressure control device for controlling injection pressure.
5. injection molding process according to claim 4, is characterized in that, the premix after stirring is sucked in resin container by vacuum aid grouting.
6. injection molding process according to claim 5, is characterized in that, is sucked in curing agent tank by curing agent by vacuum aid grouting.
7. injection molding process according to claim 6, is characterized in that, in injection moulding process, heats mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553734.7A CN105142093B (en) | 2015-09-02 | 2015-09-02 | The netted sound box covers of BMC and injection molding process containing wood-fibred |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553734.7A CN105142093B (en) | 2015-09-02 | 2015-09-02 | The netted sound box covers of BMC and injection molding process containing wood-fibred |
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| Publication Number | Publication Date |
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| CN105142093A true CN105142093A (en) | 2015-12-09 |
| CN105142093B CN105142093B (en) | 2018-06-08 |
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| CN201510553734.7A Active CN105142093B (en) | 2015-09-02 | 2015-09-02 | The netted sound box covers of BMC and injection molding process containing wood-fibred |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231445A (en) * | 2016-07-25 | 2016-12-14 | 广东欧珀移动通信有限公司 | The processing technique of mesh enclosure support, mesh enclosure support and audio amplifier |
| CN108084681A (en) * | 2017-12-29 | 2018-05-29 | 宁波市镇海科比特音响有限公司 | A kind of casing of loudspeaker box composite material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW367285B (en) * | 1996-11-29 | 1999-08-21 | Chao Feng Electronic Co Ltd | Mold rinsing improvement for thermoset resin injection molding |
| US20090062413A1 (en) * | 2003-10-24 | 2009-03-05 | Crane Building Products Llc | Composition of fillers with plastics for producing superior building materials |
| CN101563201A (en) * | 2006-12-19 | 2009-10-21 | 巴塞尔聚烯烃意大利有限责任公司 | Multilayer laminated material having at least one glass layer |
| CN101610375A (en) * | 2009-06-26 | 2009-12-23 | 深圳创维－Rgb电子有限公司 | The manufacture method of a kind of television set hot stamping speaker net and hot stamping decorating parts |
| CN101769421A (en) * | 2008-12-29 | 2010-07-07 | 陶春有 | Wood fiber composite engineering material and production method of product thereof |
| CN201821477U (en) * | 2010-10-18 | 2011-05-04 | 王佩君 | Sound box mesh cover |
-
2015
- 2015-09-02 CN CN201510553734.7A patent/CN105142093B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW367285B (en) * | 1996-11-29 | 1999-08-21 | Chao Feng Electronic Co Ltd | Mold rinsing improvement for thermoset resin injection molding |
| US20090062413A1 (en) * | 2003-10-24 | 2009-03-05 | Crane Building Products Llc | Composition of fillers with plastics for producing superior building materials |
| CN101563201A (en) * | 2006-12-19 | 2009-10-21 | 巴塞尔聚烯烃意大利有限责任公司 | Multilayer laminated material having at least one glass layer |
| CN101769421A (en) * | 2008-12-29 | 2010-07-07 | 陶春有 | Wood fiber composite engineering material and production method of product thereof |
| CN101610375A (en) * | 2009-06-26 | 2009-12-23 | 深圳创维－Rgb电子有限公司 | The manufacture method of a kind of television set hot stamping speaker net and hot stamping decorating parts |
| CN201821477U (en) * | 2010-10-18 | 2011-05-04 | 王佩君 | Sound box mesh cover |
Non-Patent Citations (1)
| Title |
|---|
| 贺光玉: "先进复合材料在汽车工业中的应用", 《汽车零部件》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231445A (en) * | 2016-07-25 | 2016-12-14 | 广东欧珀移动通信有限公司 | The processing technique of mesh enclosure support, mesh enclosure support and audio amplifier |
| CN108084681A (en) * | 2017-12-29 | 2018-05-29 | 宁波市镇海科比特音响有限公司 | A kind of casing of loudspeaker box composite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105142093B (en) | 2018-06-08 |
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