CN105826487A - Shaping apparatus and method for wrapping film used for softly-wrapped large-diameter cylindrical battery core - Google Patents
Shaping apparatus and method for wrapping film used for softly-wrapped large-diameter cylindrical battery core Download PDFInfo
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- CN105826487A CN105826487A CN201510928683.1A CN201510928683A CN105826487A CN 105826487 A CN105826487 A CN 105826487A CN 201510928683 A CN201510928683 A CN 201510928683A CN 105826487 A CN105826487 A CN 105826487A
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- Prior art keywords
- packaging film
- battery core
- precompressed mechanism
- large diameter
- precompressed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/005—Devices for making primary cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to a shaping apparatus and method for a wrapping film used for a softly-wrapped large-diameter cylindrical battery core. The shaping apparatus comprises an upper pressing mechanism, a pre-pressing mechanism and a shaping mechanism, wherein the upper pressing mechanism is arranged above the pre-pressing mechanism and used for pressing a wrapping film put on the pre-pressing mechanism; the upper pressing mechanism and the pre-pressing mechanism both can move up and down along a direction perpendicular to the upper surface of the pre-pressing mechanism; the pre-pressing mechanism is provided with a first channel allowing the shaping mechanism to extend; the upper pressing mechanism is provided with a second channel (i.e., a mold cavity) corresponding to the first channel; the shaping mechanism comprises more or more than two mold cores used for shaping of the wrapping film; a cutting tool is arranged between two adjacent mold cores; and the height of the cutting tool in the direction perpendicular to the upper surface of the pre-pressing mechanism is greater than the height of the shaping mechanism. The shaping apparatus for the wrapping film used for the softly-wrapped large-diameter cylindrical battery core is ingenious in structure and can overcome the problem that a conventional wrapping film used for the softly-wrapped large-diameter cylindrical battery core is prone to damage and easily causes leakage of an electrolyte.
Description
Technical field
The present invention relates to cell art, especially relate to forming device and the method for a kind of Soft Roll cylinder with large diameter battery core packaging film.
Background technology
The diameter of Soft Roll cylinder with large diameter battery core is more than or equal to 18mm, and the shaping of its packaging film is the most all a difficult problem for industry.Soft Roll cylinder with large diameter battery core packaging film generally uses drawing when shaping, compensate not yet with packaging film, existing packaging film manufacturing process is bigger to packaging film damage, use drawing that packaging film can be caused thinning, therefore the easy impaired leakage of packaging film, therefore the technology barrier of Soft Roll cylinder with large diameter battery core packaging film hampers the extensive application of Soft Roll cylinder with large diameter battery core always.
Development and the raising of people's living standard along with battery technology, the electronic equipments such as digital product, electric tool and power toy are increasing to the capacity requirement of Soft Roll cylinder with large diameter battery core, therefore it is required that the diameter of Soft Roll cylinder with large diameter battery core is increasing, i.e. the diameter of Soft Roll cylinder with large diameter battery core packaging film also requires that increasing.But, use the Soft Roll the thinnest more cracky of cylinder with large diameter battery core packaging film prepared by existing packaging film forming device and method, cause the more and more easily leakage of Soft Roll cylinder with large diameter battery core.It is, therefore, desirable to provide the forming device of new Soft Roll cylinder with large diameter battery core packaging film and method, so that Soft Roll cylinder with large diameter battery core packaging film is difficult to impaired leakage.
Summary of the invention
It is an object of the invention to provide the forming device of a kind of structure Soft Roll cylinder with large diameter battery core packaging film cleverly, it is possible to the problem solving the current Soft Roll cylinder with large diameter easily damaged leakage of battery core packaging film.
The forming device of a kind of Soft Roll cylinder with large diameter battery core packaging film, including upper press mechanism, precompressed mechanism and builder；Upper press mechanism is arranged at above precompressed mechanism, is positioned over the packaging film in precompressed mechanism for compacting；Upper press mechanism all can move up and down along the direction vertical with the upper surface of precompressed mechanism with precompressed mechanism；Precompressed mechanism is provided with the first passage stretched out for builder；Upper press mechanism is provided with the second channel (i.e. die cavity) corresponding with first passage；Builder includes the core rod of two or more shaping for packaging film；It is provided with cutting tool between adjacent two core rods of core rod；The cutting tool height in the direction vertical with the upper surface of precompressed mechanism is higher than the height of builder.
Further, core rod is formed as smooth arc-shaped surface towards the top of upper press mechanism.The top of builder is formed as smooth arc-shaped surface, therefore when using builder to form packaging film, makes packaging film be configured to semi-cylindrical form.
Further, cutting tool includes the cutter hub through precompressed mechanism；Cutter hub is formed as sharp knife shape towards the top of upper press mechanism.
Further, also include being arranged at the fixed mechanism below precompressed mechanism；The lifting assembly for making precompressed mechanism move up and down it is provided with between precompressed mechanism and fixed mechanism.
Further, lifting assembly is spring assembly.Using spring as the lifting assembly of precompressed mechanism, when upper press mechanism Xia Ya precompressed mechanism, precompressed mechanism is pressed downward against contracting spring assembly；When upper press mechanism departs from precompressed mechanism, precompressed mechanism automatically returns to initial position under the action of the spring.Therefore, use spring assembly as the lifting assembly of precompressed mechanism, it is possible to simplify the up and down motion of precompressed mechanism, it is not necessary to extra machinery or electronic installation control the motion of precompressed mechanism, simplify structure, also save cost.
Further, also include through fixed mechanism and the positioning component of precompressed mechanism；Upper press mechanism is provided with the location fit part matched with positioning component.
The present invention also provides for the manufacturing process of a kind of Soft Roll cylinder with large diameter battery core packaging film, is applied to the forming device of above-mentioned Soft Roll cylinder with large diameter battery core packaging film；Including step:
Step a, packaging film is cut by cutting tool；
Step b, packaging film is formed by builder；And
Step c, the redundance of the packaging film after excision shaping.
Further, before step a, initialization step is also included: make precompressed mechanism be positioned at initial position, packaging film to be formed is lain against the upper surface of precompressed mechanism；Wherein, initial position makes the upper surface of precompressed mechanism be higher than builder and the height of cutting tool, and the lower surface of the upper surface of precompressed mechanism and upper press mechanism is across preset distance.
Further, step a specifically includes step: make press mechanism move downward towards the direction of precompressed mechanism, until upper press mechanism is pressed under precompressed mechanism, makes cutting tool cut packaging film.
Further, step b specifically includes step: after packaging film is cut by cutting tool, and upper press mechanism continues to press under precompressed mechanism, makes builder stretch out from the first passage of precompressed mechanism and forms packaging film.
The forming device of the Soft Roll cylinder with large diameter battery core packaging film of the present invention and manufacturing process possess following beneficial effect:
1) packaging film cuts before forming, so packaging film is shaping into can sufficiently be compensated, therefore packaging film will cause packaging film thinning because of drawing, punching press when shaping, thus the packaging film of the shaping of the present invention is particularly suited for Soft Roll cylinder with large diameter battery core, possess the feature being difficult to impaired leakage, may advantageously facilitate the progress of Soft Roll cylinder with large diameter battery core；
2) top of builder is formed as smooth arc-shaped surface, therefore packaging film can be made to be configured to semi-cylindrical form when using builder to form packaging film；
3) using spring as the lifting assembly of precompressed mechanism, when upper press mechanism Xia Ya precompressed mechanism, precompressed mechanism is pressed downward against contracting spring assembly；When upper press mechanism departs from precompressed mechanism, precompressed mechanism automatically returns to initial position under the action of the spring.Therefore, use spring assembly as the lifting assembly of precompressed mechanism, it is possible to simplify the up and down motion of precompressed mechanism, it is not necessary to extra machinery or electronic installation control the motion of precompressed mechanism, simplify structure, also save cost.
Accompanying drawing explanation
Fig. 1 is the profile of the forming device of the Soft Roll cylinder with large diameter battery core packaging film of an embodiment.
Fig. 2 is the profile during forming device cutting packaging film of Soft Roll cylinder with large diameter battery core packaging film in Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the forming device of the Soft Roll cylinder with large diameter battery core packaging film profile when packaging film shapes in Fig. 1.
Fig. 5 is the partial enlarged drawing of Fig. 4.
Fig. 6 is the front schematic view of the packaging film after shaping.
Fig. 7 is the A-A face schematic diagram of the packaging film after the shaping of Fig. 6.
Fig. 8 is the B-B face schematic diagram of the packaging film after the shaping of Fig. 6.
Description of reference numerals: 1 is upper press mechanism, 11 is cope match-plate pattern, and 12 is mold cavity plate, and 13 is location fit part, 14 is second channel (i.e. die cavity), and 15 is fourth lane, and 2 is precompressed mechanism, and 21 is first passage, 23 is third channel, and 3 is builder, and 31 is core rod, 32 is smooth arc-shaped surface, and 4 is fixed mechanism, and 41 is lower bolster, 42 is solid model plate, and 5 is cutting tool, and 6 is packaging film, 61 accommodate chamber for battery core, and 7 is lifting assembly, and 8 is positioning component.
Detailed description of the invention
Below in conjunction with specific embodiment and accompanying drawing, forming device and the manufacturing process of Soft Roll cylinder with large diameter battery core packaging film of the present invention are described in further detail.
As shown in Figure 1 to Figure 3, in a preferred embodiment, the forming device of the Soft Roll cylinder with large diameter battery core packaging film of the present invention includes press mechanism, precompressed mechanism, builder and fixed mechanism.Wherein, upper press mechanism, precompressed mechanism and fixed mechanism set gradually from top to bottom.
Fixed mechanism includes lower bolster and solid model plate.Lower bolster and solid model plate are fixed with each other by modes such as screws.Builder includes the core rod of two or more shaping for packaging film.Preferably, the quantity of core rod is even number, thus two core rods can shape a piece of packaging film, for a Soft Roll cylinder with large diameter battery core.One end of builder is fixing with the solid model plate of fixed mechanism to be connected.Core rod is formed as smooth arc-shaped surface towards the top of upper press mechanism.The top of builder is formed as smooth arc-shaped surface, therefore when using builder that packaging film is formed, packaging film can be made to be configured to semi-cylindrical form, thus can form, after the packaging film doubling of the semi-cylindrical form formed by two core rods, the cylindrically shaped packaging film being used for packing Soft Roll cylinder with large diameter battery core.
The upper surface of precompressed mechanism is formed as smooth surface, is used for placing packaging film.The first passage stretched out for builder it is configured at preformer.Across certain interval between first passage and builder, to ensure the builder up and down motion at first passage.It is provided with cutting tool between two adjacent core rods.The cutting tool height in the direction vertical with the upper surface of precompressed mechanism is higher than builder height in the direction.Cutting tool includes the cutter hub through precompressed mechanism.One end away from upper press mechanism of cutter hub is fixed in the solid model plate of fixed mechanism, is formed as sharp knife shape near one end of upper press mechanism.Correspondingly, it is configured to the third channel stretched out for cutting tool at preformer, is formed with the fourth lane matched with third channel at upper press mechanism.Therefore, cutting tool can be used for the cutting before packaging film shapes to packaging film, packaging film is pullled so that packaging film can reduce when shaping and causes packaging film lower thickness, thus packaging film is not easy impaired leakage, the packaging film that therefore this forming device shapes is particularly suited for Soft Roll cylinder with large diameter battery core.
Precompressed mechanism can move up and down along the direction vertical with the upper surface of precompressed mechanism.The lifting assembly for making precompressed mechanism move up and down it is provided with between precompressed mechanism and fixed mechanism.Preferably, lifting assembly uses spring assembly.Using spring as the lifting assembly of precompressed mechanism, when upper press mechanism Xia Ya precompressed mechanism, precompressed mechanism is pressed downward against contracting spring assembly；When upper press mechanism departs from precompressed mechanism, precompressed mechanism automatically returns to initial position under the action of the spring.Therefore, use spring assembly as the lifting assembly of precompressed mechanism, it is possible to simplify the up and down motion of precompressed mechanism, it is not necessary to extra machinery or electronic installation control the motion of precompressed mechanism, simplify structure, also save cost.
The forming device of Soft Roll cylinder with large diameter battery core packaging film also includes that, through fixed mechanism and the positioning component of precompressed mechanism, positioning component extend out to precompressed mechanism upper surface.The location fit part matched with positioning component it is provided with at upper press mechanism.Preferentially, location fit part is positioning chamber, stretches into for positioning component.By arranging positioning component and location fit part, be conducive to upper press mechanism and the location of precompressed mechanism and cooperation, improve positioning precision, thus improve the effectiveness that packaging film shapes.
Upper press mechanism is positioned over the packaging film in precompressed mechanism for compacting.Upper press mechanism includes cope match-plate pattern and mold cavity plate.Cope match-plate pattern and mold cavity plate are fixed with each other by screw.Upper press mechanism can move up and down along the direction vertical with the upper surface of precompressed mechanism, thus realizes the compacting to packaging film and release.Upper press mechanism is provided with the second channel (i.e. die cavity) corresponding with first passage, and when pressing under upper press mechanism is to precompressed mechanism, the second channel (i.e. die cavity) of press mechanism is stretched at the top (i.e. core rod) of builder, thus forms packaging film.
The present invention also provides for the manufacturing process of a kind of Soft Roll cylinder with large diameter battery core packaging film, and this manufacturing process is to be applied to above-mentioned Soft Roll cylinder with large diameter battery core packaging film forming device.Specifically include following steps:
Step S1, initializes forming device.As it is shown in figure 1, make precompressed mechanism be positioned at initial position, packaging film to be formed is lain against the upper surface of precompressed mechanism.Wherein, initial position makes the upper surface of precompressed mechanism be higher than builder and the height of cutting tool, and the lower surface of the upper surface of precompressed mechanism and upper press mechanism is across preset distance.
Step S2, cutting step.As shown in Figures 2 and 3, make press mechanism move downward towards the direction of precompressed mechanism, until upper press mechanism is pressed under precompressed mechanism, make cutting tool that packaging film to be cut.
Step S3, forming step.As shown in Figure 4 and Figure 5, after cutting packaging film, upper press mechanism continues to press under precompressed mechanism, makes builder stretch out from the first passage of precompressed mechanism and forms packaging film.
Step S4, shaping step.Packaging film after shaping takes out, and as shown in Fig. 7 to Fig. 8, the packaging film after shaping is formed with battery core for accommodating battery core and accommodates chamber, packaging film is carried out doubling to wrap up battery core along cutting position, is packaged packaging film.
In sum, the forming device of the Soft Roll cylinder with large diameter battery core packaging film of the present invention and manufacturing process are particularly suited for the shaping of Soft Roll cylinder with large diameter battery core packaging film, packaging film is before forming owing to being cut packaging film, therefore packaging film can sufficiently be compensated in forming process, thus packaging film will not be pullled and make packaging film thinning in forming process by packaging film.Therefore, the packaging film that the forming device of the present invention and manufacturing process shape is difficult to impaired leakage, and quality is improved.
Term " first " that the present invention uses, " second ", " the 3rd ", " the 4th " etc., be all easy for describing and the expression way that uses, there is no particular meaning.
Carry out although the description of this invention combines embodiments above, but, those skilled in the art can carry out many replacement, modifications and variations according to above-mentioned content, be apparent from.Therefore, all such replacements, improve and change in the spirit and scope being included in appended claims.
Claims (10)
1. the forming device of a Soft Roll cylinder with large diameter battery core packaging film, it is characterised in that include press mechanism, precompressed mechanism and builder；Described upper press mechanism is arranged at above described precompressed mechanism, is positioned over the packaging film in described precompressed mechanism for compacting；Described upper press mechanism all can move up and down along the direction vertical with the upper surface of described precompressed mechanism with precompressed mechanism；Described precompressed mechanism is provided with the first passage stretched out for described builder；Described upper press mechanism is provided with the second channel corresponding with described first passage；Described builder includes the core rod of two or more shaping for described packaging film；It is provided with cutting tool between adjacent two core rods of described core rod；The described cutting tool height in the direction vertical with the upper surface of described precompressed mechanism is higher than the height of described builder.
The forming device of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 1, it is characterised in that described core rod is formed as smooth arc-shaped surface towards the top of described upper press mechanism.
The forming device of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 1, it is characterised in that described cutting tool includes the cutter hub through described precompressed mechanism；Described cutter hub is formed as sharp knife shape towards the top of described upper press mechanism.
The forming device of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 1, it is characterised in that also include being arranged at the fixed mechanism below described precompressed mechanism；The lifting assembly for making described precompressed mechanism move up and down it is provided with between described precompressed mechanism and described fixed mechanism.
The forming device of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 4, it is characterised in that described lifting assembly is spring assembly.
The forming device of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 1, it is characterised in that also include through described fixed mechanism and the positioning component of precompressed mechanism；Described upper press mechanism is provided with the location fit part matched with described positioning component.
7. a manufacturing process for Soft Roll cylinder with large diameter battery core packaging film, is applied to the forming device of Soft Roll cylinder with large diameter battery core packaging film as claimed in claim 1；It is characterized in that, including step:
Step a, packaging film is cut by described cutting tool；
Step b, described packaging film is formed by described builder；And
Step c, the redundance of the packaging film after excision shaping.
The manufacturing process of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 7, it is characterized in that, initialization step was also included: make precompressed mechanism be positioned at initial position, packaging film to be formed is lain against the upper surface of precompressed mechanism before described step a；Wherein, described initial position makes the upper surface of precompressed mechanism be higher than builder and the height of cutting tool, and the lower surface of the upper surface of precompressed mechanism and upper press mechanism is across preset distance.
The manufacturing process of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 7, it is characterized in that, described step a specifically includes step: make described upper press mechanism move downward towards the direction of described precompressed mechanism, until upper press mechanism is pressed under precompressed mechanism, make cutting tool that packaging film to be cut.
The manufacturing process of Soft Roll cylinder with large diameter battery core packaging film the most according to claim 8, it is characterized in that, described step b specifically includes step: after packaging film is cut by described cutting tool, described upper press mechanism continues to press under described precompressed mechanism, makes builder stretch out from the first passage of precompressed mechanism and forms packaging film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510928683.1A CN105826487B (en) | 2015-12-15 | 2015-12-15 | The forming device and method of Soft Roll cylinder with large diameter battery core packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510928683.1A CN105826487B (en) | 2015-12-15 | 2015-12-15 | The forming device and method of Soft Roll cylinder with large diameter battery core packaging film |
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| Publication Number | Publication Date |
|---|---|
| CN105826487A true CN105826487A (en) | 2016-08-03 |
| CN105826487B CN105826487B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510928683.1A Active CN105826487B (en) | 2015-12-15 | 2015-12-15 | The forming device and method of Soft Roll cylinder with large diameter battery core packaging film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379503A (en) * | 2017-08-29 | 2017-11-24 | 东莞市久森新能源有限公司 | Aluminum plastic film process for stamping and diel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201623185U (en) * | 2010-04-28 | 2010-11-03 | 惠州市德赛聚能电池有限公司 | Dedicated die of battery flexible packaging forming die |
| CN201936923U (en) * | 2010-12-17 | 2011-08-17 | 珠海汉格能源科技有限公司 | Cell aluminum-plastic membrane forming device |
| CN103072845A (en) * | 2013-01-21 | 2013-05-01 | 浙江欧德申自动化设备有限公司 | Film pressing mechanism for storage battery pole group coating machine |
| CN203006599U (en) * | 2013-01-21 | 2013-06-19 | 浙江欧德申自动化设备有限公司 | Film cutting mechanism of storage battery plate group coating machine |
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2015
- 2015-12-15 CN CN201510928683.1A patent/CN105826487B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201623185U (en) * | 2010-04-28 | 2010-11-03 | 惠州市德赛聚能电池有限公司 | Dedicated die of battery flexible packaging forming die |
| CN201936923U (en) * | 2010-12-17 | 2011-08-17 | 珠海汉格能源科技有限公司 | Cell aluminum-plastic membrane forming device |
| CN103072845A (en) * | 2013-01-21 | 2013-05-01 | 浙江欧德申自动化设备有限公司 | Film pressing mechanism for storage battery pole group coating machine |
| CN203006599U (en) * | 2013-01-21 | 2013-06-19 | 浙江欧德申自动化设备有限公司 | Film cutting mechanism of storage battery plate group coating machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107379503A (en) * | 2017-08-29 | 2017-11-24 | 东莞市久森新能源有限公司 | Aluminum plastic film process for stamping and diel |
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| CN105826487B (en) | 2019-04-09 |
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