CN108453473B - Environment-friendly forming process of liquid crystal display cover - Google Patents
Environment-friendly forming process of liquid crystal display cover Download PDFInfo
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- CN108453473B CN108453473B CN201810222325.2A CN201810222325A CN108453473B CN 108453473 B CN108453473 B CN 108453473B CN 201810222325 A CN201810222325 A CN 201810222325A CN 108453473 B CN108453473 B CN 108453473B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/16—Letters, numerals, or other symbols adapted for permanent fixing to a support
- G09F7/165—Letters, numerals, or other symbols adapted for permanent fixing to a support obtained by a treatment of the support
Abstract
The environment-friendly forming process of the liquid crystal display cover comprises the following steps: the method comprises the following steps of feeding, punch forming, CNC, polishing, flatness shaping, sand blasting, anode coloring and screen printing, wherein three times of punching processes with different patterns are adopted, so that a exquisite logo effect with balanced matte and bright effects is obtained; meanwhile, the process of comprehensively irradiating by ultraviolet light, infrared light and visible red light and printing metal powder infrared ink on the semi-dry pattern is adopted, so that the whole manufacturing process is more environment-friendly, and meanwhile, the pattern can be ensured to have exquisite effect and anti-counterfeiting capability.
Description
Technical Field
The invention relates to the field of energy-saving and environment-friendly manufacturing, in particular to an energy-saving and environment-friendly forming process of a liquid crystal display cover.
Background
The manufacturing process of the liquid crystal display cover is quite energy-saving and environment-friendly at present, and when a product is formed, only a CNC (computer numerical control) process is usually carried out and then a stamping process is carried out, so that the CNC process needs longer processing time and consumes energy; in addition, when the product is used for stamping a logo, the logo has poor effect, and the matte effect and the bright effect are difficult to balance; in addition, the pattern printing of the existing product is not environment-friendly enough, the image is not exquisite enough, the pattern firmness is not enough, and the product is easy to decolor, so that the appearance of the product is damaged.
Disclosure of Invention
In order to solve the technical problem, the invention provides an environment-friendly forming process of a liquid crystal display cover, which adopts a mode of firstly stamping and then CNC, and can save the processing time; adopting a three-time continuous stamping process to obtain a exquisite logo effect with balanced matte and bright effects; the semi-dry ink with expected melt degree can be obtained by adopting the process of comprehensive irradiation of ultraviolet light, infrared light and visible red light; the process of printing the metal powder infrared ink on the semi-dry ink pattern is adopted, so that the printed pattern has exquisite effect, anti-counterfeiting capability and firmness, and the whole manufacturing process is more environment-friendly by adopting the UV ink.
In order to achieve the above object, the present invention provides an environment-friendly process for forming a liquid crystal display cover, comprising the steps of:
a feeding process: feeding a reel-shaped aluminum sheet by a conveyor, wherein the grain direction of the aluminum sheet is parallel to the long edge direction of the aluminum sheet, the long edge direction is the feeding direction, and coating a film on the single surface of a product by a film coating machine by adopting UV (ultraviolet) light curing equipment;
the punch forming process comprises the steps of 1) punching the aluminum sheet into the shape of the shell by adopting a 110-tonnage punch press and blanking all around, and punching the aluminum sheet with the shape of the shell by adopting a convex punching male die; 2) adopting soft material test operation before a mold for stamping the LOGO is opened, predicting and verifying the springback coefficient for 2-3 times, carrying out first stamping by adopting a stamping head with a protruded curve-shaped grain on the surface, then carrying out second stamping by adopting a stamping head with a sunken diamond-shaped grain on the surface, and finally carrying out third stamping by adopting a stamping head with a smooth surface, so that the LOGO is stamped out gradually from shallow to deep, and the dark pattern of the LOGO has the effect of balancing the matte effect and the bright effect in subsequent processing; 3) pre-bending four sides of the shell by adopting a 110-tonnage punch press for 70 degrees, forming a bending male die according to a pressing line, pre-bending four sides of the shell by adopting a 160-tonnage punch press for 90 degrees, forming the bending male die according to a negative gap of the pressing line, and finally pushing a negative angle to the shell by adopting the 110-tonnage punch press, wherein the side edge back-off angle is 20 degrees; 4) shaping the flatness of a product by adopting a high-strength adhesive for punching an upper die and a lower die;
a CNC procedure, namely processing each size of the product to a specified thickness and shape, and milling an anode hanging point on the bending of the product, wherein the width of the anode hanging point is 0.5mm, the length of the anode hanging point is 30mm, and the depth of the anode hanging point is 0.3 mm;
a grinding process, namely grinding the periphery of the product and the surface of a master die, grinding and repairing scratches on the surface of the product caused by stamping and CNC (computer numerical control) processes, adopting a grinding plate as a sand paper fine grinding surface, limiting when the periphery of a grinding jig of the sand paper fine grinding surface is ground, avoiding damage to the periphery edge, and then carrying out flatness shaping;
sand blasting and anode coloring, wherein metal sand is adopted for sand blasting on the front side and the back side, the back side is firstly sprayed, the front side is then sprayed, an anode color plate is provided, anode coloring is carried out after specific colors are confirmed by tests, and finally laser etching is carried out to break oxygen;
a silk-screen printing process, namely printing a pattern on a printing surface by using UV ink, irradiating the UV ink for 0.2 second by using ultraviolet light, infrared light and visible red light after printing is finished, wherein the proportions of the ultraviolet light, the infrared light and the visible red light are respectively 50%, 30% and 20%, so that the ink is in a semi-dry state suitable for further printing, then printing metal powder infrared ink on the semi-dry pattern by using a silk-screen printer, so that the UV ink and the metal powder infrared ink are fused, drying and curing the whole printed pattern by using illumination with the proportions of the ultraviolet light and the visible red light of respectively 60% and 40%, and then curing the printed matter by using hot air;
an automatic gluing process, wherein 45S of glue dispensing, 8S of taking, 90S of hot pressing and 30S of taking are carried out, and the deformation direction of the deformation degree control is temporarily determined to be right side up; the long side of the stamping section is less than 0.8 mm; broadside <0.6 mm; the long side of the sand blasting section is less than 1.0 mm; broadside <0.8 mm; the length of the assembly segment is less than or equal to 1.0 mm; broadside ≦ 0.8 mm;
and an assembling step of assembling the glued lid.
Compared with the prior art, the method has the advantages that the mode of firstly stamping and then CNC is adopted, so that the processing time can be saved; adopting a three-time continuous stamping process to obtain a exquisite logo effect with balanced matte and bright effects; the semi-dry ink in the expected molten state can be obtained by adopting the process of comprehensive irradiation of ultraviolet light, infrared light and visible red light in corresponding proportion; the process of printing the metal powder infrared ink on the semi-dry ink pattern is adopted, so that the printed pattern has exquisite effect, anti-counterfeiting capability and firmness, and the whole manufacturing process is more environment-friendly by adopting the UV ink.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An environment-friendly forming process of a liquid crystal display cover comprises the following steps:
a feeding process: feeding a reel-shaped aluminum sheet by a conveyor, wherein the grain direction of the aluminum sheet is parallel to the long edge direction of the aluminum sheet, the long edge direction is the feeding direction, and coating a film on the single surface of a product by a film coating machine by adopting UV (ultraviolet) light curing equipment;
the punch forming process comprises the steps of 1) punching the aluminum sheet into the shape of the shell by adopting a 110-tonnage punch press and blanking all around, and punching the aluminum sheet with the shape of the shell by adopting a convex punching male die; 2) adopting soft material test operation before a mold for stamping the LOGO is opened, predicting and verifying the springback coefficient for 2-3 times, carrying out first stamping by adopting a stamping head with a protruded curve-shaped grain on the surface, then carrying out second stamping by adopting a stamping head with a sunken diamond-shaped grain on the surface, and finally carrying out third stamping by adopting a stamping head with a smooth surface, so that the LOGO is stamped out gradually from shallow to deep, and the dark pattern of the LOGO has the effect of balancing the matte effect and the bright effect in subsequent processing; 3) pre-bending four sides of the shell by adopting a 110-tonnage punch press for 70 degrees, forming a bending male die according to a pressing line, pre-bending four sides of the shell by adopting a 160-tonnage punch press for 90 degrees, forming the bending male die according to a negative gap of the pressing line, and finally pushing a negative angle to the shell by adopting the 110-tonnage punch press, wherein the side edge back-off angle is 20 degrees; 4) shaping the flatness of a product by adopting a high-strength adhesive for punching an upper die and a lower die;
a CNC procedure, namely processing each size of the product to a specified thickness and shape, and milling an anode hanging point on the bending of the product, wherein the width of the anode hanging point is 0.5mm, the length of the anode hanging point is 30mm, and the depth of the anode hanging point is 0.3 mm;
a grinding process, namely grinding the periphery of the product and the surface of a master die, grinding and repairing scratches on the surface of the product caused by stamping and CNC (computer numerical control) processes, adopting a grinding plate as a sand paper fine grinding surface, limiting when the periphery of a grinding jig of the sand paper fine grinding surface is ground, avoiding damage to the periphery edge, and then carrying out flatness shaping;
sand blasting and anode coloring, wherein metal sand is adopted for sand blasting on the front side and the back side, the back side is firstly sprayed, the front side is then sprayed, an anode color plate is provided, anode coloring is carried out after specific colors are confirmed by tests, and finally laser etching is carried out to break oxygen;
a silk-screen printing process, namely printing a pattern on a printing surface by using UV ink, irradiating the UV ink for 0.2 second by using ultraviolet light, infrared light and visible red light after printing is finished, wherein the proportions of the ultraviolet light, the infrared light and the visible red light are respectively 50%, 30% and 20%, so that the ink is in a semi-dry state suitable for further printing, then printing metal powder infrared ink on the semi-dry pattern by using a silk-screen printer, so that the UV ink and the metal powder infrared ink are fused, drying and curing the whole printed pattern by using illumination with the proportions of the ultraviolet light and the visible red light of respectively 60% and 40%, and then curing the printed matter by using hot air;
an automatic gluing process, wherein 45S of glue dispensing, 8S of taking, 90S of hot pressing and 30S of taking are carried out, and the deformation direction of the deformation degree control is temporarily determined to be right side up; the long side of the stamping section is less than 0.8 mm; broadside <0.6 mm; the long side of the sand blasting section is less than 1.0 mm; broadside <0.8 mm; the length of the assembly segment is less than or equal to 1.0 mm; broadside ≦ 0.8 mm;
and an assembling step of assembling the glued lid.
In the invention, a mode of firstly stamping and then CNC is adopted, so that a workpiece can be bent by an angle in advance, and the time for machining radian by CNC is reduced; the method is a great innovation of the application by adopting a process of continuously stamping the LOGO for three times, patterns of stamping heads used in the previous two times are different, a stamping head without patterns is used in the last time, and the LOGO can be continuously stamped for three times, so that a delicate LOGO effect with balanced matte and bright effects can be obtained through tests; the application has the advantages that the semi-dry ink in the expected melting state can be obtained by adopting the process of comprehensive irradiation of ultraviolet light, infrared light and visible red light in a corresponding proportion, the invention is another great innovation of the application, the technology of the comprehensive irradiation for curing the UV ink is not available in the prior drying and curing, and the application finds that the infrared light and the visible red light are added into the ultraviolet light, so that the drying effect is better, the drying effect of the ink can be better controlled, and the ink can be kept in a state which is beneficial to processing; and the process of printing the metal powder infrared ink on the semi-dry ink pattern enables the printed pattern to have a metal effect, the firmness of the ink is greatly improved, and when the printed pattern is irradiated by infrared light, extra anti-counterfeiting capacity can be obtained under the action of the infrared ink, and the whole manufacturing process is more environment-friendly due to the adoption of UV ink and no organic ink.
In the description, each part is described in a progressive manner, each part is emphasized to be different from other parts, and the same and similar parts among the parts are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. An environment-friendly forming process of a liquid crystal display cover comprises the following steps:
a feeding process: feeding a reel-shaped aluminum sheet by a conveyor, wherein the grain direction of the aluminum sheet is parallel to the long edge direction of the aluminum sheet, the long edge direction is the feeding direction, and coating a film on the single surface of a product by a film coating machine by adopting UV (ultraviolet) light curing equipment;
the punch forming process comprises the steps of 1) punching the aluminum sheet into the shape of the shell by adopting a 110-tonnage punch press and blanking all around, and punching the aluminum sheet with the shape of the shell by adopting a convex punching male die; 2) adopting soft material test operation before a mold for stamping the LOGO is opened, predicting and verifying the springback coefficient for 2-3 times, carrying out first stamping by adopting a stamping head with a protruded curve-shaped grain on the surface, then carrying out second stamping by adopting a stamping head with a sunken diamond-shaped grain on the surface, and finally carrying out third stamping by adopting a stamping head with a smooth surface, so that the LOGO is stamped out gradually from shallow to deep, and the dark pattern of the LOGO has the effect of balancing the matte effect and the bright effect in subsequent processing; 3) pre-bending four sides of the shell by adopting a 110-tonnage punch press for 70 degrees, forming a bending male die according to a pressing line, pre-bending four sides of the shell by adopting a 160-tonnage punch press for 90 degrees, forming the bending male die according to a negative gap of the pressing line, and finally pushing a negative angle to the shell by adopting the 110-tonnage punch press, wherein the side edge back-off angle is 20 degrees; 4) shaping the flatness of a product by adopting a high-strength adhesive for punching an upper die and a lower die;
a CNC procedure, namely processing each size of the product to a specified thickness and shape, and milling an anode hanging point on the bending of the product, wherein the width of the anode hanging point is 0.5mm, the length of the anode hanging point is 30mm, and the depth of the anode hanging point is 0.3 mm;
a grinding process, namely grinding the periphery of the product and the surface of a master die, grinding and repairing scratches on the surface of the product caused by stamping and CNC (computer numerical control) processes, adopting a grinding plate as a sand paper fine grinding surface, limiting when the periphery of a grinding jig of the sand paper fine grinding surface is ground, avoiding damage to the periphery edge, and then carrying out flatness shaping;
sand blasting and anode coloring, wherein metal sand is adopted for sand blasting on the front side and the back side, the back side is firstly sprayed, the front side is then sprayed, an anode color plate is provided, anode coloring is carried out after specific colors are confirmed by tests, and finally laser etching is carried out to break oxygen;
a silk-screen printing process, namely printing a pattern on a printing surface by using UV ink, irradiating the UV ink for 0.2 second by using ultraviolet light, infrared light and visible red light after printing is finished, wherein the proportions of the ultraviolet light, the infrared light and the visible red light are respectively 50%, 30% and 20%, so that the ink is in a semi-dry state suitable for further printing, then printing metal powder infrared ink on the semi-dry pattern by using a silk-screen printer, so that the UV ink and the metal powder infrared ink are fused, drying and curing the whole printed pattern by using illumination with the proportions of the ultraviolet light and the visible red light of respectively 60% and 40%, and then curing the printed matter by using hot air;
an automatic gluing process, wherein 45S of glue dispensing, 8S of taking, 90S of hot pressing and 30S of taking are carried out, and the deformation direction of the deformation degree control is temporarily determined to be right side up; the long side of the stamping section is less than 0.8 mm; broadside <0.6 mm; the long side of the sand blasting section is less than 1.0 mm; broadside <0.8 mm; the length of the assembly segment is less than or equal to 1.0 mm; broadside ≦ 0.8 mm;
and an assembling step of assembling the glued lid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810222325.2A CN108453473B (en) | 2018-03-16 | 2018-03-16 | Environment-friendly forming process of liquid crystal display cover |
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| CN201810222325.2A CN108453473B (en) | 2018-03-16 | 2018-03-16 | Environment-friendly forming process of liquid crystal display cover |
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| CN108453473B true CN108453473B (en) | 2020-10-09 |
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| CN109967977A (en) * | 2019-04-11 | 2019-07-05 | 重庆百钰顺科技有限公司 | Notebook computer shell Forging Technology |
| CN113199207B (en) * | 2021-03-22 | 2022-08-23 | 东莞溪河精密技术有限公司 | Metal sheet processing technology and communication equipment |
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| JP2948297B2 (en) * | 1990-10-09 | 1999-09-13 | 東芝タンガロイ株式会社 | Screen printing sample holder and metallizing method using the same |
| JPH05138536A (en) * | 1991-11-21 | 1993-06-01 | Tsuboman:Kk | Grinding wheel and manufacture thereof |
| JP2931719B2 (en) * | 1992-07-09 | 1999-08-09 | 株式会社金陽社 | Printing roller and manufacturing method thereof |
| GB0322485D0 (en) * | 2003-09-25 | 2003-10-29 | Disperse Ltd | Process for the preparation of surface coatings or dry films |
| CN2743955Y (en) * | 2004-11-12 | 2005-11-30 | 陈见国 | Forming structure of metal panel key |
| KR100841225B1 (en) * | 2006-11-09 | 2008-06-26 | 주식회사 파인디앤씨 | Manufacturing method of the housing for lcd module and housing made by the same |
| CN101491870A (en) * | 2008-01-24 | 2009-07-29 | 劲百企业有限公司 | LCD panel frame production method |
| CN101635117B (en) * | 2008-07-25 | 2015-06-10 | 鸿富锦精密工业（深圳）有限公司 | Metal identification piece manufacturing method |
| CN103813670A (en) * | 2012-11-13 | 2014-05-21 | 鸿富锦精密工业（深圳）有限公司 | Metal casing and pattern fabrication method |
| CN104551562B (en) * | 2014-12-16 | 2017-02-22 | 广东欧珀移动通信有限公司 | Processing method of metal middle frame mobile phone shell structure |
| CN105057978B (en) * | 2015-07-21 | 2017-08-25 | 深圳市旺鑫精密工业有限公司 | It is a kind of can die casting mobile phone shell production technology in the mould of anodic oxidation |
| CN105072228A (en) * | 2015-09-06 | 2015-11-18 | 深圳市中联讯科技有限公司 | Mobile phone surface shell and processing method thereof |
| CN106670730A (en) * | 2016-07-07 | 2017-05-17 | 深圳天珑无线科技有限公司 | Manufacturing technology of metal battery cover of cellphone |
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Effective date of registration: 20211222 Address after: 224200 Electronic Information Industry Park No. 9, Anfeng Town, Dongtai City, Yancheng City, Jiangsu Province Patentee after: JIANGSU JIEBANG ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 215300 No. 15, Lais Road, high tech Zone, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: KUNSHAN JER ELECTRONIC TECHNOLOGY Co.,Ltd. |
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