CN112549399A - High-pressure forming process for battery cover - Google Patents
High-pressure forming process for battery cover Download PDFInfo
- Publication number
- CN112549399A CN112549399A CN202011407318.3A CN202011407318A CN112549399A CN 112549399 A CN112549399 A CN 112549399A CN 202011407318 A CN202011407318 A CN 202011407318A CN 112549399 A CN112549399 A CN 112549399A
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- China
- Prior art keywords
- printing
- plate
- battery cover
- transfer printing
- pressure forming
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000007639 printing Methods 0.000 claims abstract description 47
- 238000010023 transfer printing Methods 0.000 claims abstract description 43
- 239000003921 oil Substances 0.000 claims abstract description 17
- 239000002199 base oil Substances 0.000 claims abstract description 16
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims abstract description 12
- 238000009713 electroplating Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims abstract description 7
- 238000004080 punching Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims description 10
- 239000000805 composite resin Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 238000007790 scraping Methods 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/045—Drying sheets, e.g. between two printing stations by radiation
- B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a high-pressure forming process of a battery cover, belonging to the technical field of battery shells, and the high-pressure forming process of the battery cover comprises the following steps: taking a plate with the thickness of less than 0.8mm, punching a positioning hole and printing characters and/or patterns; printing transparent oil on the plate, and then transferring lines on the UV transfer printing mold; then electroplating treatment is carried out, and black base oil is printed for three times; ensuring no dust points and foreign matters, and then printing demolding oil; and then carrying out high-pressure forming, cutting, UV spraying and UV irradiation to obtain a finished product of the battery cover. According to the battery cover high-pressure forming process provided by the invention, the printed lines are clear and bright, and have obvious layering and three-dimensional sense, the high-pressure forming process is adopted for shaping after the printing is finished, the color and the uniformity of the obtained lines are higher, and the generation of bad problems such as burrs, hands scraping and the like can be effectively improved.
Description
Technical Field
The invention belongs to the technical field of battery shells, and particularly relates to a high-pressure forming process for a battery cover.
Background
Batteries have become the main energy source of wireless equipment in modern life, and the batteries are used for supplying energy when the batteries are small enough to be used as remote controllers and mobile phones and large enough to be used as cars and buses. In order to ensure that the battery can provide a continuous and stable current for the device, a stable environment needs to be provided for the device, and interference from the outside to the battery is also avoided, so that a battery shell is arranged. The battery case is fabricated by designing a battery cover to be openable and closable in order to facilitate the replacement of the battery. Unlike the battery covers of large-scale devices such as vehicles, which are hidden inside, battery covers of electronic devices are usually located on the housings of electronic devices, and therefore, the battery covers have high requirements on color, effect and hand feel in addition to performance requirements on the protection function of the battery covers. At present, about five main processes for preparing the battery cover are available, firstly, the battery cover is formed by injection molding by using the raw materials after color matching; secondly, spraying after injection molding by using primary-color raw materials; thirdly, printing is carried out again on the basis of the second type; fourthly, sticking a film after injection molding of the primary color raw material; fifthly, preparing by adopting an IML process. The battery cover prepared by the methods is attractive in appearance, but the structure of the product is limited by the characteristics of raw material injection molding and IML (in-mold labeling) processes, so that the problems of increased thickness of the whole machine after installation, increased cost, scratching of the periphery of the battery cover after assembly and the like occur.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: provides a process for preparing a battery cover which is beautiful, light, thin and smooth.
In order to solve the technical problems, the invention adopts the technical scheme that: the high-pressure forming process of the battery cover comprises the following steps of:
step 1, taking a plate with the thickness of less than 0.8mm, punching a positioning hole and printing characters and/or patterns;
step 2, printing transparent oil on the surface of the plate to be subjected to grain transfer printing, and then transferring the grains on the UV transfer printing die onto the plate;
step 3, electroplating the surface with the UV transfer printing lines, and printing black base oil for three times;
step 4, checking the surface of the plate obtained in the step 3, ensuring no dust points and foreign matters, and then printing demolding oil;
and 5, carrying out high-pressure forming on the plate obtained in the step 4, then cutting, carrying out UV spraying on the cut male die surface, and then carrying out UV irradiation to obtain a finished product of the battery cover.
The invention has the beneficial effects that: according to the battery cover high-pressure forming process, the lines are printed by utilizing UV transfer printing after the transparent oil is printed, and electroplating treatment is carried out after the UV transfer printing, so that the obtained lines are clear and bright and have obvious layering and three-dimensional effects; after printing is finished, a high-pressure forming process is adopted for shaping, the color and the uniformity of the obtained lines are higher, and the generation of bad problems such as burrs, hand scraping and the like can be effectively improved; the battery cover high-pressure forming process provided by the invention can be carried out on extremely thin plates, and the problems of product thickness and weight increase after processing can be avoided.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.
The invention provides a high-pressure forming process of a battery cover, which comprises the following steps:
step 1, taking a plate with the thickness of less than 0.8mm, punching a positioning hole and printing characters and/or patterns;
step 2, printing transparent oil on the surface of the plate to be subjected to grain transfer printing, and then transferring the grains on the UV transfer printing die onto the plate through UV transfer printing;
step 3, electroplating the surface with the UV transfer printing lines, and printing three times of black base oil on the surface with the UV transfer printing lines;
step 4, checking the surface of the plate obtained in the step 3, ensuring no dust points and foreign matters, and then printing demolding oil;
and 5, performing high-pressure forming on the plate obtained in the step 4, then cutting, performing UV spraying on the cut convex die surface (the reverse side of the printing surface), and then performing UV irradiation to obtain a finished product of the battery cover.
From the above description, the beneficial effects of the present invention are: according to the battery cover high-pressure forming process, the lines are printed by utilizing UV transfer printing after the transparent oil is printed, and electroplating treatment is carried out after the UV transfer printing, so that the obtained lines are clear and bright and have obvious layering and three-dimensional effects; the high-pressure forming process is adopted for shaping after printing is finished, compared with the traditional method of shaping and printing, the obtained lines are higher in color and uniformity, and the generation of bad problems such as burrs, hand scraping and the like can be effectively improved; the battery cover high-pressure forming process provided by the invention can be carried out on extremely thin plates, and although other existing processes can achieve effects similar or similar to those of the products obtained in the application, the method can change the plate structure, so that the thickness of the obtained products is increased, and the weight is increased.
Further, the step 2 is as follows: and carrying out plane UV transfer printing on one surface of the plate to be subjected to grain transfer printing, then carrying out four-color printing, and then carrying out the grain transfer printing on the UV transfer printing die on the plate.
From the above description, it can be seen that the printing by the method of step 3 can effectively avoid the problem of fine mesh printing after printing the transparent oil, and the defect of insufficient adhesion of the four-color printing can be effectively improved by the planar UV transfer printing.
Further, the plate is a resin plate or a resin composite plate. Such as PC board, PMMA board, etc.
Further, the thickness of the black base oil printed in step 3 is 2-6um each time; and (3) baking after printing black base oil every time, wherein the baking temperature is 80 ℃, the time for baking for the first time and the second time is 20min, and the time for baking for the third time is 1 h.
Further, the pressure of the high-pressure molding in the step 5 is 60-80kg, the temperature is 280-320 ℃, and the time is 38-42 s.
Further, the UV irradiation time in step 5 is 10-13s, and the energy is 750-2。
Example 1:
a high-pressure forming process for a battery cover comprises the following steps:
step 1, taking a PC plate with the thickness of 0.6mm, punching a positioning hole and printing a logo;
step 2, printing transparent oil on the surface of the plate to be subjected to grain transfer printing, and then transferring the grains on the UV transfer printing die onto the plate through UV transfer printing;
step 3, electroplating the surface with the UV transfer printing lines, and printing three times of black base oil on the surface with the UV transfer printing lines; the thickness of the black base oil printed for three times is 4 um, 4 um and 5 um; baking after printing black base oil every time, wherein the baking temperature is 80 ℃, the time for the first baking and the second baking is 20min, and the time for the third baking is 1 h;
step 4, checking the surface of the plate obtained in the step 3, ensuring no dust points and foreign matters, and then printing demolding oil;
step 5, performing high-pressure forming on the plate obtained in the step 4, then cutting, performing UV spraying on the cut convex die surface (the reverse side of the printing surface), and then performing UV irradiation to obtain a finished product of the battery cover; the pressure of high-pressure molding is 60kg, the temperature is 320 ℃, and the time is 40 s; the UV irradiation time was 10s and the energy was 900mJ/cm2。
The PC board can be transparent or opaque.
Example 2:
a high-pressure forming process for a battery cover comprises the following steps:
step 1, taking a PMMA plate with the thickness of less than 0.5mm, punching a positioning hole and printing a logo;
step 2, printing transparent oil on the surface of the plate to be subjected to grain transfer printing, and then transferring the grains on the UV transfer printing die onto the plate through UV transfer printing;
step 3, electroplating the surface with the UV transfer printing lines, and printing three times of black base oil on the surface with the UV transfer printing lines; the thickness of the black base oil printed for three times is 3 um, 6um and 2 um; baking after printing black base oil every time, wherein the baking temperature is 80 ℃, the time for the first baking and the second baking is 20min, and the time for the third baking is 1 h;
step 4, checking the surface of the plate obtained in the step 3, ensuring no dust points and foreign matters, and then printing demolding oil;
step 5, performing high-pressure forming on the plate obtained in the step 4, and then cutting and performing UV irradiation to obtain a finished product of the battery cover; the pressure of high-pressure molding is 80kg, the temperature is 280 ℃, and the time is 38 s; the UV irradiation time was 13s and the energy was 750mJ/cm2。
Example 3:
a high-pressure forming process for a battery cover comprises the following steps:
step 1, taking a PMMA plate with the thickness of less than 0.45mm, punching a positioning hole and printing a logo;
step 2, carrying out plane UV transfer printing on one surface of the plate to be subjected to grain transfer printing, then carrying out four-color printing, and then carrying out grain transfer printing on the UV transfer printing mold on the plate;
step 3, electroplating the surface with the UV transfer printing lines, and printing three times of black base oil on the surface with the UV transfer printing lines; the thickness of the black base oil printed for the third time is 2um, 4 um and 6 um; baking after printing black base oil every time, wherein the baking temperature is 80 ℃, the time for the first baking and the second baking is 20min, and the time for the third baking is 1 h;
step 4, checking the surface of the plate obtained in the step 3, ensuring no dust points and foreign matters, and then printing demolding oil;
step 5, performing high-pressure forming on the plate obtained in the step 4, then cutting, performing UV spraying on the cut convex die surface (the reverse side of the printing surface), and then performing UV irradiation to obtain a finished product of the battery cover; the pressure of high-pressure molding is 70kg, the temperature is 300 ℃, and the time is 40 s; the UV irradiation time was 12s and the energy was 820mJ/cm2。
In conclusion, according to the battery cover high-pressure forming process provided by the invention, the lines are printed by using UV transfer printing after the transparent oil is printed, and then electroplating treatment is carried out after the UV transfer printing, so that the obtained lines are clear and bright and have obvious layering and three-dimensional effects; adopt high pressure forming technology to finalize the design after the printing is accomplished, the colour and the degree of consistency of gained line are higher, and can effectively improve the production of bad problems such as deckle edge, scraping the hand.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or directly or indirectly applied to the related technical field are included in the scope of the present invention.
Claims (6)
1. The high-pressure forming process of the battery cover is characterized by comprising the following steps of:
step 1, taking a plate with the thickness of less than 0.8mm, punching a positioning hole and printing characters and/or patterns;
step 2, printing transparent oil on the surface of the plate to be subjected to grain transfer printing, and then transferring the grains on the UV transfer printing die onto the plate;
step 3, electroplating the surface with the UV transfer printing lines, and printing black base oil for three times;
step 4, checking the surface of the plate obtained in the step 3, ensuring no dust points and foreign matters, and then printing demolding oil;
and 5, carrying out high-pressure forming on the plate obtained in the step 4, then cutting, carrying out UV spraying on the cut male die surface, and then carrying out UV irradiation to obtain a finished product of the battery cover.
2. The high-pressure molding process of a battery cover according to claim 1, wherein the step 2 is: and carrying out plane UV transfer printing on one surface of the plate to be subjected to grain transfer printing, then carrying out four-color printing, and then carrying out the grain transfer printing on the UV transfer printing die on the plate.
3. The high-pressure molding process of a battery cover according to claim 1, wherein the plate is a resin plate or a resin composite plate.
4. The high-pressure molding process of a battery cover according to claim 1, wherein the thickness of the black base ink printed in step 3 is 2-6um each time; after printing black base oil, baking is carried out at the baking temperature of 80 ℃.
5. The high-pressure molding process for battery covers as claimed in claim 1, wherein the pressure of the high-pressure molding in step 5 is 60-80kg, the temperature is 280-320 ℃, and the time is 38-42 s.
6. The battery cover high pressure molding process of claim 1Characterized in that the UV irradiation time in the step 5 is 10-13s, and the energy is 750-2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407318.3A CN112549399A (en) | 2020-12-04 | 2020-12-04 | High-pressure forming process for battery cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407318.3A CN112549399A (en) | 2020-12-04 | 2020-12-04 | High-pressure forming process for battery cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112549399A true CN112549399A (en) | 2021-03-26 |
Family
ID=75048201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011407318.3A Pending CN112549399A (en) | 2020-12-04 | 2020-12-04 | High-pressure forming process for battery cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112549399A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819089A (en) * | 2017-11-20 | 2018-03-20 | 福建省石狮市通达电器有限公司 | A kind of manufacture craft and its former of 3D battery covers |
| CN110493987A (en) * | 2019-08-12 | 2019-11-22 | Oppo广东移动通信有限公司 | Housing unit, the method and electronic equipment for preparing housing unit |
| CN111816810A (en) * | 2020-07-17 | 2020-10-23 | 东莞市中泰精密科技有限公司 | Flash sand process for composite plate of mobile phone battery cover |
-
2020
- 2020-12-04 CN CN202011407318.3A patent/CN112549399A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819089A (en) * | 2017-11-20 | 2018-03-20 | 福建省石狮市通达电器有限公司 | A kind of manufacture craft and its former of 3D battery covers |
| CN110493987A (en) * | 2019-08-12 | 2019-11-22 | Oppo广东移动通信有限公司 | Housing unit, the method and electronic equipment for preparing housing unit |
| CN111816810A (en) * | 2020-07-17 | 2020-10-23 | 东莞市中泰精密科技有限公司 | Flash sand process for composite plate of mobile phone battery cover |
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