CN104943187B - The preparation method and die apparatus of composite polymer material sound enclosure - Google Patents
The preparation method and die apparatus of composite polymer material sound enclosure Download PDFInfo
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- CN104943187B CN104943187B CN201510377057.8A CN201510377057A CN104943187B CN 104943187 B CN104943187 B CN 104943187B CN 201510377057 A CN201510377057 A CN 201510377057A CN 104943187 B CN104943187 B CN 104943187B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The preparation method that the present invention provides composite polymer material sound enclosure, including designing a model, completing the steps such as mould, mix, injection, vacuum forming, oil removing, perforate, assembling, in the preparation method of the present invention, the steps such as dispensing mixing, injection, assembling are carried out in vacuum environment, can effectively prevent from producing gas inside resin sound equipment case；In resin sound equipment case preparation method, in injection and number of assembling steps, using the same vacuum, ensure that the material density of whole sound equipment case is the same, and the good airproof performance between backboard, casing；The present invention also provides die apparatus, including carriage and turning device, and the accuracy of mould closed orientation is realized using the carriage of rack-and-pinion；Mould can be spun upside down by turning device, prevent the single load bearing inside mold cavity, the problem of further preventing mold cavity deformation, and dispensing can be made rapidly and uniformly to be covered with whole mold cavity.
Description
Technical field
The making of the production technical field, especially composite polymer material sound enclosure of sound equipment case of the present invention
The die apparatus used in method and manufacturing process.
Background technology
In a set of acoustic product, the effect of sound box is extremely important：1) it can separate the acoustically radiating before and after loudspeaker
Penetrate, prevent them from interfering；2) resonance to loudspeaker damps, and improves transient state sound to reduce the non-linear distortion of sound
Should；3) the low frequency sound reproduction performance of broadening loudspeaker, and the sensitivity for increasing low frequency radiation makes sound more dulect etc..
A good sound enclosure from which type of material and technique to being manufactured, to its acoustical quality and aesthetic appearance
It is to play very big influence.Resin has used as a kind of new material in stereo set, but hard crisp due to resin material
Property, make the sealing property of the sound equipment case of assembling completion bad, easily produce the problem of gas leakage.
The content of the invention
For it is above-mentioned in the prior art the defects of, the present invention solves the sealing problem of existing resin sound equipment case.
In order to achieve the above object, the present invention provides following technical scheme：
The preparation method of composite polymer material sound enclosure, including,
Step S101：Design a model, model includes backboard and casing；
Step S102：Mould is completed, organic silica gel, organic silica gel solidification is respectively applied in the model surface of backboard and casing
Organic silica gel mould is formed, the turning inside organic silica gel mold cavity after the solidification opens up clean-out hatch, and is having
Gypsum mold is set outside machine silica gel mould；In this step, two backboard, casing moulds are formed.
Organic silica gel mould can viscosity, after it use a period of time, interior surface occurs that certain dispensing remains,
Particularly in the place of turning angle, conveniently and efficiently die cavity inside can be cleaned by opening up clean-out hatch.
Step S103：Mixes, resin, colorant and decorating objects are mixed, make it stir to form raw material,
Curing agent is added, the weight of curing agent is the 0.5% of raw material weight, and resin is unsaturated polyester resin or epoxy resin；
Step S104：Injection, by made of dispensing implantation step S102 made of step S103 in mould；
Step S105：Vacuum forming, step S104 mould is put into vacuum tank, make vacuum in vacuum tank for-
0.15MPa, after dispensing curing molding, mould is taken out, be stripped, form embryo；By solidifying in vacuum environment, make dispensing
In air be moved out.
Step S106：Oil removing, pH value is used to clean embryo for 14 sodium hydroxide solvent；Removed by sodium hydroxide solvent
The spot on embryo surface.
Step S107：Perforate, perforate is carried out to embryo using numerical control device, the position in hole is accurate to 0.1mm；By position
It is accurate to 0.1mm and effectively solves resin sound enclosure and the accurate problem of electronic component assembling.
Step S108：Assembling, the step S107 backboards completed and casing is bonded by resin, resin and step
The resin used in S103 is the same, and the audio amplifier after bonding is put into vacuum tank, and it is -0.15MPa to make the vacuum in vacuum tank,
Taken out after natural gum solidification to be bonded.
In this step, bonded using the resin of phase same material, and will be carried on the back using vacuum the same in vacuum forming
Plate and casing are glued together, and ensure that the material density of whole sound equipment case is the same.Simultaneously because material and backboard, case that bonding uses
Body is the same, therefore backboard, casing can be made effectively to link into an integrated entity, and improves the sealing of backboard, case member, solve because
Casing structural and the problem of cause gas leakage.
In the preferred embodiment of the present invention, also include after the step S108：
Step S109, sanding and polishing, audio amplifier surface is polished with 2000# superfine sand paper, is then polished, sprays,
Colored drawing.
In the preferred embodiment of the present invention, the decorating objects used in step s 103 be natural ore powder,
Wood, cement, leaf, crystal, the one or more of cobblestone or natural crystal, the wood, cement, crystal, cobblestone or
Natural crystal is 10-100 mesh.Decorating objects are not limited to above-mentioned material, for the excessive rigid decorating objects of its particle size
Need to be smashed to 10-100 mesh, be such as soft decorating objects, such as leaf, rope, can smash, can not also smash.
In the preferred embodiment of the present invention, step S103 includes：
Step S1031, the raw material after resin and colorant are stirred, carry out membrane degassing；This step makes in raw material
Air can be discharged effectively.
Step S1032, curing agent is put into vacuum tank and is de-gassed, and vacuum is -0.2MPa；This step makes curing agent
In air can effectively discharge.
Step S1033, by the raw material after above-mentioned steps degassing process and curing agent in the environment that vacuum is -0.2MPa
It is well mixed, form dispensing.This step ensures that in mixed process mixing liquid will not be mixed into new air.
In the preferred embodiment of the present invention, in step S104, by dispensing in the bar that vacuum is -0.15MPa
Injected under part in mould, the flow velocity that dispensing is controlled during injection is 1-1.5kg/min.This step, in vacuum environment
Dispensing is injected, prevents new air to be mixed into, and control the flow velocity of injection.Through overtesting, if speed is more than 1.5kg/min, match somebody with somebody
The die cavity that material has little time to fill full mould just overflows from cast gate；If speed is less than 1kg/min, the duration of pouring can be caused too long,
The viscosity of dispensing can be increasing, so as to cause the appearance of stomata.
In the preferred embodiment of the present invention, step S105 includes：
Step S1051, is heated to mould, its temperature is reached 80-85 DEG C；
Step S1052, mould being put into vacuum tank, adjustment vacuum is -0.5MPa, after continuing 20-40min, then will be true
Reciprocal of duty cycle is adjusted to -0.15MPa, and after dispensing curing molding, mould is taken out, the demoulding.In this step, higher vacuum is first set
Degree, ensure that air can be ejected fully before curing in dispensing, then be adjusted to relatively low vacuum, make the resin after solidification close
Degree can reach 1.25g/cm3More than, resonance, the echo of sound equipment case are reduced, makes its tonequality full clean, bass dive.
In the preferred embodiment of the present invention, in step S108,
Audio amplifier after bonding is put into vacuum tank, adjustment vacuum is -0.5MPa, after continuing 5-20min, then by vacuum
Degree is adjusted to -0.15MPa, is taken out after natural gum solidification to be bonded.
The vacuum that this step uses makes the resin and backboard, the resin density one of casing of bonding as step S105
Sample, ensure that seamless, sealing is realized in the connection between backboard, casing.
The present invention also provides a kind of die apparatus, suitable for the making side of above-mentioned composite polymer material sound enclosure
Method, in addition to carriage, the carriage include gear and rack, and the gypsum mold includes left mould, right mould, described
Gear is set on left mould, the bottom surface of the right mould and/or top surface, and the gear is flexibly connected with the rack.Using gear teeth
Bar positions the closing position of gypsum mold exactly, so as to be accurately positioned the closure position of organic silica gel mould inside gypsum mold
Put, and control the closing speed of mould exactly.Meanwhile in the design of upper and lower mould, due to the effect of gravity, the die cavity of lower mould
Easily extend out deformation.The problem of using left and right mould the die cavity of gypsum mold being avoided to be easily deformed.
In the preferred embodiment of the present invention, the quantity of carriage is one or two.When gypsum mold
When size is smaller, using single carriage, the carriage is arranged among bottom surface and/or the top surface of left and right mould.If stone
The size of cream mould is larger, using double carriages, respectively symmetrically is arranged on bottom surface and/or the both ends of top surface.
In the preferred embodiment of the present invention, in addition to turning device, turning device include restocking, undercarriage, turned
Axle, runner, restocking are connected with the undercarriage by elastomeric element, and rotating shaft is arranged on restocking or undercarriage, rotating shaft and the runner
Internal diameter connects.It will close rear mold by restocking, undercarriage and clamp, mould is spun upside down, prevented inside mold cavity
Single load bearing, the problem of further preventing mold cavity deformation.Meanwhile during dispensing injects mould, mould can also be entered
Row upset, makes dispensing rapidly and uniformly be covered with whole mold cavity.
Beneficial effects of the present invention are：
1) in resin sound equipment case preparation method of the invention, the step such as dispensing mixing, injection, assembling is in vacuum environment
Carry out, can effectively prevent from producing gas inside resin sound equipment case；
2) in resin sound equipment case preparation method, in injection and number of assembling steps, using the same vacuum, whole sound equipment is ensured
The material density of case is the same, and the good airproof performance between backboard, casing；
3) die apparatus provided by the invention, it can avoid what the die cavity of gypsum mold was easily deformed from asking using left and right mould
Topic；
4) mould can be spun upside down by turning device, prevents the single load bearing inside mold cavity, enter one
The problem of step prevents mold cavity deformation, and dispensing can be made rapidly and uniformly to be covered with whole mold cavity.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the Making programme of resin sound equipment case in one embodiment of the present invention；
Fig. 2 is the structural representation of die apparatus in one embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing of the present invention, technical scheme is clearly and completely described, it is clear that institute
The embodiment of description is only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, belongs to this hair
The scope of bright protection.
In one embodiment of the present invention, there is provided the preparation method of composite polymer material sound enclosure, such as Fig. 1
It is shown, including：
Step S101：Design a model, model includes backboard and casing；
Step S102：Mould is completed, organic silica gel, organic silica gel solidification is respectively applied in the model surface of backboard and casing
Organic silica gel mould is formed, the turning inside organic silica gel mold cavity after the solidification opens up clean-out hatch, and is having
Fixed gypsum outside machine silica gel mould；
Step S103：Mixes, resin, colorant and decorating objects are mixed, make it stir to form raw material,
Curing agent is added, the weight of curing agent is the 0.5% of raw material weight, and resin is unsaturated polyester resin or epoxy resin；Its
In, decorating objects can be natural ore powder, cement, wood, leaf, crystal, cobblestone or natural crystal etc..Using ornament
Body can form organic textured pattern on resin.For the excessive rigid decorating objects of its particle size need to be smashed to
10-100 mesh.
Step S104：Injection, by made of dispensing implantation step S102 made of step S103 in mould；
Step S105：Vacuum forming, step S104 mould is put into vacuum tank, make vacuum in vacuum tank for-
0.15MPa, after dispensing curing molding, mould is taken out, be stripped, form embryo；By solidifying in vacuum environment, make dispensing
In air be moved out.
Step S106：Oil removing, pH value is used to clean embryo for 14 sodium hydroxide solvent；Removed by sodium hydroxide solvent
The spot on embryo surface.
Step S107：Perforate, perforate is carried out to embryo using numerical control device, the position in hole is accurate to 0.1mm；
Step S108：Assembling, the step S107 backboards completed and casing is bonded by resin, resin and step
The resin used in S103 is the same, and the audio amplifier after bonding is put into vacuum tank, and it is -0.15MPa to make the vacuum in vacuum tank,
Taken out after natural gum solidification to be bonded；
Step S109, sanding and polishing, audio amplifier surface is polished with 2000# superfine sand paper, is then polished, sprays,
Colored drawing.
In order to ensure not produce stomata inside the resin sound equipment case produced, in a kind of preferred embodiment of the present invention
In, step S103 includes：
Step S1031, the raw material after resin and colorant are stirred, carry out membrane degassing；
Step S1032, curing agent is put into vacuum tank and is de-gassed, and vacuum is -0.2MPa；
Step S1033, by the raw material after above-mentioned steps degassing process and curing agent in the environment that vacuum is -0.2MPa
It is well mixed, form dispensing.
In order to prevent dispensing from during mould is injected, producing new gas, in one kind side of being preferable to carry out of the present invention
In formula, in step S104, dispensing is injected in mould under conditions of vacuum is -0.15MPa, controlled during injection
The flow velocity of dispensing processed is 1-1.5kg/min.
In order to ensure that the resin density after solidification can reach 1.25g/cm3More than, so as to ensure the sound equipment produced
Case can reduce resonance, echo, make tonequality full clean, bass dive, in the preferred embodiment of the present invention, in step
Rapid S105 includes：
Step S1051, is heated to mould, its temperature is reached 80-85 DEG C；
Step S1052, mould being put into vacuum tank, adjustment vacuum is -0.5MPa, after continuing 10-30min, then will be true
Reciprocal of duty cycle is adjusted to -0.15MPa, and after dispensing curing molding, mould is taken out, the demoulding.
In step S108,
Audio amplifier after bonding is put into vacuum tank, adjustment vacuum is -0.5MPa, after continuing 5-20min, then by vacuum
Degree is adjusted to -0.15MPa, is taken out after natural gum solidification to be bonded.
The present invention also provides die apparatus, suitable for the preparation method of above-mentioned composite polymer material sound enclosure, such as
Fig. 2, gypsum mold include left mould 1, right mould (not shown), set gear 3.2, gear respectively on the bottom surface of left mould 1 and top surface
3.1, gear is set respectively on the bottom surface of right mould and top surface.The gear set on left and right mould can be flexibly connected with rack 4.
If the longest dimension of gypsum mold is more than 30cm, in the both sides of the bottom surface of left and right mould, top surface slip can be set to fill respectively
Put, to improve the stabilization of its open-close module.Also include turning device, turning device includes restocking 6.1, undercarriage 6.2, rotating shaft 7, turned
Wheel 5, restocking 6.1 is connected with undercarriage 6.2 by spring 8, and rotating shaft 7 is arranged on restocking 6.1, and rotating shaft 7 is connected with the internal diameter of runner 5.
When in use, restocking, undercarriage are clipped in the top surface of Guan Bi mould, bottom surface to turning device respectively, and are pressed from both sides Guan Bi mould by spring
Tightly, motor driven runner rotates, and then drives the rotating shaft being connected with runner to be rotated around the center of circle of runner, realizes Guan Bi mould
Upset.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (9)
1. the preparation method of composite polymer material sound enclosure, it is characterised in that including,
Step S101：Design a model, model includes backboard and casing；
Step S102：Mould is completed, organic silica gel is respectively applied in the model surface of backboard and casing, organic silica gel is formed by curing
Organic silica gel mould, the turning inside organic silica gel mold cavity after the solidification opens up clean-out hatch, and has described
Gypsum mold is set outside machine silica gel mould；
Step S103：Mix, resin, colorant and decorating objects are mixed, make it stir to form raw material, then added
Enter curing agent, the weight of curing agent is the 0.5% of raw material weight, and the resin is unsaturated polyester resin or epoxy resin；
Step S103 includes：
Step S1031, the raw material after resin and colorant are stirred, carry out membrane degassing；
Step S1032, curing agent is put into vacuum tank and is de-gassed, and vacuum is -0.2MPa；
Step S1033, the raw material after above-mentioned steps degassing process and curing agent are mixed in the environment that vacuum is -0.2MPa
Uniformly, dispensing is formed；
Step S104：Injection, by made of dispensing implantation step S102 made of step S103 in mould；
Step S105：Vacuum forming, step S104 mould is put into vacuum tank, make vacuum in vacuum tank for-
0.15MPa, after dispensing curing molding, mould is taken out, be stripped, form embryo；
Step S106：Oil removing, pH value is used to clean embryo for 14 sodium hydroxide solvent；
Step S107：Perforate, perforate is carried out to embryo using numerical control device, the position in hole is accurate to 0.1mm；
Step S108：Assembling, the step S107 backboards completed and casing is bonded by resin, the resin and step
The resin used in S103 is the same, and the audio amplifier after bonding is put into vacuum tank, and it is -0.15MPa to make the vacuum in vacuum tank,
Taken out after natural gum solidification to be bonded.
2. the preparation method of composite polymer material sound enclosure according to claim 1, it is characterised in that in institute
Also include after stating step S108：
Step S109, sanding and polishing, audio amplifier surface is polished with 2000# superfine sand paper, is then polished, sprays, colored drawing.
3. the preparation method of composite polymer material sound enclosure according to claim 1 or 2, it is characterised in that
The decorating objects used in step S103 are the one of natural ore powder, wood, cement, leaf, crystal, cobblestone or natural crystal
Kind is a variety of, and the wood, crystal, cobblestone or natural crystal are 10-100 mesh.
4. the preparation method of composite polymer material sound enclosure according to claim 3, it is characterised in that the step
In rapid S104, dispensing is injected in mould under conditions of vacuum is -0.15MPa, dispensing is controlled during injection
Flow velocity is 1-1.5kg/min.
5. the preparation method of composite polymer material sound enclosure according to claim 4, it is characterised in that the step
Rapid S105 includes：
Step S1051, is heated to mould, its temperature is reached 80-85 DEG C；
Step S1052, mould is put into vacuum tank, adjustment vacuum is -0.5MPa, after continuing 20-40min, then by vacuum
- 0.15MPa is adjusted to, after dispensing curing molding, mould is taken out, is stripped.
6. according to the preparation method of any described composite polymer material sound enclosures of claim 3-5, it is characterised in that
In the step S108,
Audio amplifier after the bonding is put into vacuum tank, adjustment vacuum is -0.5MPa, after continuing 5-20min, then by vacuum
Degree is adjusted to -0.15MPa, is taken out after natural gum solidification to be bonded.
7. die apparatus, suitable for the preparation method of composite polymer material sound enclosure described in claim 1, its feature exists
In：Also include carriage, the carriage includes gear and rack, and the gypsum mold includes left mould, right mould, described
Gear is set on left mould, the bottom surface of the right mould and/or top surface, and the gear is flexibly connected with the rack.
8. die apparatus according to claim 7, it is characterised in that：The quantity of the carriage is one or two.
9. the die apparatus according to claim 7 or 8, it is characterised in that：Also include turning device, the turning device bag
Restocking, undercarriage, rotating shaft, runner are included, the restocking is connected with the undercarriage by elastomeric element, and the rotating shaft is arranged on described
Frame or undercarriage, the rotating shaft are connected with the internal diameter of the runner.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377057.8A CN104943187B (en) | 2015-07-01 | 2015-07-01 | The preparation method and die apparatus of composite polymer material sound enclosure |
| PCT/CN2016/086697 WO2017000818A1 (en) | 2015-07-01 | 2016-06-22 | Mould for hollow-structured box body of polymer audio device and audio device box body manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377057.8A CN104943187B (en) | 2015-07-01 | 2015-07-01 | The preparation method and die apparatus of composite polymer material sound enclosure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104943187A CN104943187A (en) | 2015-09-30 |
| CN104943187B true CN104943187B (en) | 2017-12-05 |
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| CN201510377057.8A Active CN104943187B (en) | 2015-07-01 | 2015-07-01 | The preparation method and die apparatus of composite polymer material sound enclosure |
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| WO (1) | WO2017000818A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943187B (en) * | 2015-07-01 | 2017-12-05 | 陈建新 | The preparation method and die apparatus of composite polymer material sound enclosure |
| CN113997473B (en) * | 2021-10-28 | 2023-10-10 | 泉州市国科自动化科技有限公司 | Environment-friendly resin artwork production process and production line thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4676731A (en) * | 1986-01-29 | 1987-06-30 | E-W Mold & Tool Co., Inc. | Injection mold with side and end core locks for forming a partitioned container |
| CN2334566Y (en) * | 1998-08-21 | 1999-08-25 | 海畅实业有限公司 | Mould for making ceramic decoration articles with short bevel densily covered on blank surface |
| US7107601B2 (en) * | 2000-06-14 | 2006-09-12 | Canon Kabushiki Kaisha | Foam molding method and apparatus |
| CN100493233C (en) * | 2005-05-11 | 2009-05-27 | 李一明 | Manufacture method of sound box of imitating stone |
| TW201241050A (en) * | 2011-04-07 | 2012-10-16 | Au Optronics Corp | Manufacturing method of plastic box |
| CN203460370U (en) * | 2013-09-09 | 2014-03-05 | 深圳随尔精密科技有限公司 | Simple and easy mould with baffle |
| CN204367265U (en) * | 2013-12-17 | 2015-06-03 | 上海海维斯特汽车设计有限公司 | automobile silica gel mould structure |
| CN104320733A (en) * | 2014-09-30 | 2015-01-28 | 陈正盛 | Structure body, earphones using the structure body, and sound box using the structure body |
| CN104943187B (en) * | 2015-07-01 | 2017-12-05 | 陈建新 | The preparation method and die apparatus of composite polymer material sound enclosure |
-
2015
- 2015-07-01 CN CN201510377057.8A patent/CN104943187B/en active Active
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2016
- 2016-06-22 WO PCT/CN2016/086697 patent/WO2017000818A1/en active Application Filing
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| Publication number | Publication date |
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| WO2017000818A1 (en) | 2017-01-05 |
| CN104943187A (en) | 2015-09-30 |
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