CN110450557B - Glass cover plate ink-jet processing method and ink-jet device thereof - Google Patents
Glass cover plate ink-jet processing method and ink-jet device thereof Download PDFInfo
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- CN110450557B CN110450557B CN201810433682.3A CN201810433682A CN110450557B CN 110450557 B CN110450557 B CN 110450557B CN 201810433682 A CN201810433682 A CN 201810433682A CN 110450557 B CN110450557 B CN 110450557B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/007—Digital printing on surfaces other than ordinary paper on glass, ceramic, tiles, concrete, stones, etc.
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
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Abstract
The invention relates to the technical field of electronic product accessory processing, in particular to an ink-jet processing method and an ink-jet device for a glass cover plate. The glass cover plate ink-jet processing method comprises the following steps: performing at least two times of ink spraying on the glass cover plate in the temperature range of 40-70 ℃, and maintaining the glass cover plate to have different temperatures while performing each time of ink spraying so as to perform pre-drying treatment on the sprayed ink; after the pre-drying treatment is finished, forming a pre-cured ink layer with a preset thickness on the glass cover plate; the glass cover plate with the pre-cured ink layer is baked to form the ink layer, the baking temperature is 80-170 ℃, the ink sprayed on the glass cover plate is pre-dried before the ink is baked, the viscosity of the ink is increased, the ink is prevented from overflowing everywhere, particularly the ink at the bent part of the glass cover plate flows, and the quality of the formed ink layer is ensured; the heating plate is arranged on the ink-jet device, so that the pre-drying treatment of the sprayed ink is convenient.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of electronic product accessory processing, in particular to an ink jet processing method and an ink jet device for a glass cover plate.
[ background of the invention ]
With the development of science and technology and the instant demand of people for office work and entertainment, handheld electronic equipment is more and more popular with people, such as handheld electronic equipment like tablet computers and mobile phones. The electronic equipment industry is changing day by day, develops 2.5 structure apron from the plane apron, and present develops 3D apron from 2.5 apron, and 3D apron develops into the curved surface all around from original bilateral curved surface moreover.
The technology of the bilateral curved surface or the peripheral curved surface has great challenges to ink jet printing coatings, and the problems of uneven ink and poor spraying quality are easy to occur, so that the ink jet processing technology of the glass cover plate needs to be improved to improve the spraying quality of the glass cover plate.
[ summary of the invention ]
In order to overcome the technical problem that the quality of a sprayed ink layer is poor due to the defects of the existing spraying process for the glass cover plate, the invention provides an ink-jet processing method for the glass cover plate and an ink-jet device thereof, which are used for improving the quality of the ink layer formed on the glass cover plate by spraying.
In order to solve the above technical problems, the present invention provides a technical solution as follows: the inkjet processing method of the 3D curved glass cover plate comprises the following steps:
performing at least two times of ink spraying on the glass cover plate in the temperature range of 40-70 ℃, and maintaining the glass cover plate to have different temperatures while performing each time of ink spraying so as to perform pre-drying treatment on the sprayed ink; after the pre-drying treatment is finished, forming a pre-cured ink layer with a preset thickness on the glass cover plate; and baking the glass cover plate with the pre-cured ink layer to form the ink layer, wherein the baking temperature is 80-170 ℃.
Preferably, the glass cover plate comprises a 3D curved glass cover plate and a glass rear cover plate.
Preferably, the pre-drying treatment time is kept for 2-10min after the ink spraying is finished, and the volatilization amount of the sprayed ink is 40-60%.
Preferably, the pre-drying treatment comprises at least the following two stages:
a first heating stage: heating at 40-55 deg.C for 1-3 min;
a second heating stage: the heating temperature is 55-70 deg.C, and the heating time is 5-9 min.
Preferably, in each heating stage, the heating temperature has a temperature rise rate of 0.2 ℃/S-2 ℃/S.
Preferably, after the glass cover plate is subjected to the baking treatment, the method further comprises the following steps: spraying and printing primer on one side of the glass cover plate with the ink layer, and carrying out heat treatment on the glass cover plate sprayed with the primer, wherein the heat treatment temperature is as follows: the heat treatment time is 10-50min at the temperature of 120 ℃ and 170 ℃.
Preferably, the sprayed ink at least comprises one or more of yellow ink, magenta ink, cyan ink or black ink, and the primer comprises resin substances.
Preferably, after the heat treatment of the primed glass cover plate, the following steps are included: cooling the glass cover plate, performing laser etching on the glass cover plate after cooling, setting an IR hole, a camera hole, a logo or repairing a window area frame, performing ultrasonic cleaning on the glass cover plate after performing laser etching, and cleaning and removing primer remained in the laser etching area; and then, printing an IR hole or a camera hole or a product logo on the glass cover plate by adopting a silk-screen printing or pad printing method.
In order to solve the above technical problems, the present invention provides an ink jet device for a glass cover plate, which comprises an ink jet positioning fixture, an ink jet module and a control module; the ink-jet positioning jig is used for fixing the glass cover plate; the ink-jet positioning jig comprises a bearing piece, wherein the bearing piece comprises a supporting plate and a heating plate, a placing part used for bearing a glass cover plate is arranged on the supporting plate, the heating plate is arranged on the supporting plate and is far away from one side of the placing part, after the glass cover plate is placed into the placing part, the control module is connected with and controls the heating plate to heat, and the ink-jet module is controlled to spray ink to the glass cover plate by the control module.
Preferably, the control module comprises a temperature control module and a spraying program control module, the temperature control module is used for adjusting and controlling the heating temperature and the heating time of the positioning jig, and the spraying program control module is used for controlling the spraying amount and the spraying times of the ink jet module.
Compared with the prior art, the glass cover plate is subjected to ink spraying for multiple times, the glass cover plate is maintained to have different temperatures while each time of ink spraying is carried out, and the sprayed ink is subjected to pre-drying treatment; carry out the spraying many times to printing ink, less printing ink of spraying at every turn, can guarantee to finally form the homogeneity on the printing ink layer of glass apron, the spraying volume of avoiding printing ink once is more, the printing ink spraying is inhomogeneous, the relatively poor problem of quality on the printing ink layer that leads to forming, and the spraying corresponds the predrying process of different temperature ranges each time, the better solvent part that makes in the printing ink volatilizes, increase the consistency of printing ink, printing ink overflow everywhere before avoiding toasting the glass apron, especially the flow of glass apron flexion part printing ink, the homogeneity on the printing ink layer that the influence toasted after formation, the quality of 3D curved surface glass apron after the spraying processing is accomplished is improved.
After the ink spraying is finished, the pre-drying treatment time is kept for 2-10min, the volatilization amount of the sprayed ink is 40-60%, and the good pre-drying treatment of the ink layer is further ensured.
In each heating stage, the heating temperature has a heating rate of 0.2 ℃/S-2 ℃/S. The heating temperature is gradually increased at a set speed, so that the phenomenon that the ink layer is heated unevenly due to the fact that the heating temperature is increased too much at one time and the property of the ink layer formed on the glass cover plate is influenced is avoided.
In another embodiment of the present invention, an ink jet device for a glass cover plate includes an ink jet positioning fixture, an ink jet module and a control module. Inkjet positioning jig includes a hot plate, the setting of hot plate can be fine carries out heat treatment to glass apron, simultaneously control module can set up the hot plate and have different heating temperature and heat time according to the nature of the different printing ink of spraying and the actual need of product, improves and forms the quality of the printing ink layer on the glass apron.
The control module is set to comprise a temperature control module and a spraying program control module, the temperature control module is used for adjusting and controlling the heating temperature and the heating time of the positioning jig, and the spraying program control module is used for controlling the spraying amount and the spraying times of the ink jet module. The quality of the ink sprayed on the glass cover plate is better regulated and controlled by the temperature control module, and meanwhile, the quality of the formed ink layer can be well controlled by the spraying amount and the spraying times under the control of the setting of the spraying program control module.
[ description of the drawings ]
FIG. 1 is a flow chart of a method for inkjet processing a 3D curved glass cover plate according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a method of ink-jet processing of a glass rear cover according to a second embodiment of the present invention;
FIG. 3 is a schematic view of the entire structure of an ink jet device for a glass cover plate according to a third embodiment of the present invention;
FIG. 4 is a schematic view of an overall structure of an inkjet positioning fixture according to a third embodiment of the present invention;
fig. 5 is a schematic view showing the overall structure of a carrier in a third embodiment of the present invention;
FIG. 6 is a block diagram of the connection between the control module and the inkjet positioning fixture according to the third embodiment of the present invention;
fig. 7 is a schematic view showing the overall structure of a carrier in another embodiment of the third embodiment of the present invention;
FIG. 8 is an enlarged view of portion A of FIG. 4;
FIG. 9 is an enlarged view of portion B of FIG. 4;
FIG. 10 is a top view of an inkjet positioning fixture according to a third embodiment of the present invention;
FIG. 11 is a cross-sectional view taken in the direction B-B of FIG. 10;
fig. 12 is a cross-sectional view of the positioning rib of the inkjet positioning jig provided in a stepped shape.
Description of reference numerals:
10. an ink-jet positioning jig; 20. an ink jet module; 30. a control module; 301. A temperature control module; 302. a spraying program control module; 40. a positioning frame; 401. a fixing plate; 4011. a through hole; 402. positioning the edge; 4021. a first layer; 4022. a second layer; 403. an opening; 404. positioning a plate; 4041. positioning holes; 405. an electrical output interface; 406. a power supply input port; 407. a fixed part; 4071. a positioning area; 50. a carrier; 501. a placement section; 5011. fixing the rod; 5012. adjusting a rod; 5013. a side wall; 502. a support plate; 503. a recessed port; 504. a support plate; 505. a groove; 506. adjusting a rod; 507. a limiting plate; 508. heating plates; 509. an electrical connection portion; 5010. a control unit; 100. Glass apron ink jet equipment.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a first embodiment of the present invention provides an inkjet processing method for a 3D curved glass cover plate, which includes the following steps:
s1: providing a 3D curved glass cover plate;
s2: performing ink spraying on the 3D curved glass cover plate at the temperature range of 40-70 ℃ at least twice, and maintaining different temperatures of the 3D curved glass cover plate while performing ink spraying each time so as to perform pre-drying treatment on the sprayed ink;
s3: after the pre-drying treatment is finished, forming a pre-cured ink layer with a preset thickness on the 3D curved glass cover plate;
s4: and baking the 3D curved glass cover plate with the pre-cured ink layer to form the ink layer, wherein the baking temperature is 80-170 ℃.
The plurality of 3D curved surface glass cover plates can be uniformly placed on the ink-jet positioning jig. In the step S2, the inkjet positioning fixture may be used to heat the 3D curved glass placed thereon and keep a certain pre-drying temperature range unchanged. The pre-drying temperature, time and heating rate are all controllable.
In step S2, the ink to be sprayed includes at least one or more of yellow ink, magenta ink, cyan ink, and black ink. Each ink corresponds to at least one ink spraying operation. The 3D curved glass cover plate is maintained to have different pre-drying temperatures while each ink spraying is carried out, the pre-drying temperature corresponding to each ink spraying can be increased to a preset pre-drying temperature range before each ink spraying, or the pre-drying temperature can be increased to the preset pre-drying temperature range during the spraying process.
In some specific embodiments, the pre-drying treatment of the 3D curved glass cover plate by performing ink spraying for a plurality of times and setting different pre-drying temperatures to be gradually increased comprises the following steps:
setting the spraying speed of the ink to be 1-5 times/min, the spraying thickness of the ink each time to be 0.5-1.5 mu m, and the spraying times to be at least 2 times; and the number of the first and second groups,
utilizing the ink-jet positioning jig to carry out pre-drying treatment on the ink, wherein the pre-drying treatment comprises a plurality of heating stages corresponding to ink spraying, and the pre-drying treatment at least comprises the following two stages:
a first heating stage: heating at 40-55 deg.C for 1-3 min;
a second heating stage: the heating temperature is 55-70 deg.C, and the heating time is 5-9 min.
The pre-drying treatment described above comprises a plurality of heating stages corresponding to the ink spraying, which can be understood as: one heating stage for each ejection of ink.
In some other embodiments, the sprayed ink is further processed while maintaining the pre-drying process for 2-10min after the ink spraying is finished.
Right 3D curved surface glass carries out printing ink spraying many times, and less printing ink of spraying at every turn can guarantee to finally form the homogeneity on 3D curved surface glass's printing ink layer, and it is more to avoid the spraying volume of printing ink once, and the printing ink spraying is inhomogeneous, leads to the relatively poor problem of quality on the printing ink layer that forms.
Particularly, the 3D glass cover plate is firstly soaked by the first-time sprayed ink, so that the adhesion between the ink and the 3D curved glass is increased; meanwhile, the first stage is provided with a lower heating temperature, so that the printing ink is dried to a certain extent to avoid overflowing of the printing ink, the adhesion of the 3D curved glass to the printing ink is further enhanced, and the uniformity of a printing ink coating is better ensured.
With the second spraying or the subsequent successive multiple ink spraying, the thickness of the ink layer becomes thicker and thicker, so that the second stage is set to be higher corresponding to the heating temperature of the heating stage after the first spraying, the solvent of the ink layer is better volatilized, the viscosity of the ink sprayed on the 3D curved glass is increased, and the ink is prevented from overflowing everywhere. Through the pre-drying treatment of the ink in the two heating stages, the volatilization amount of the volatile solvent contained in the ink sprayed on the 3D curved glass cover plate is 50-65%.
In each heating stage, the heating temperature has a heating rate of 0.2 ℃/S-2 ℃/S. The heating temperature is gradually increased at a set speed, so that the phenomenon that the ink layer is heated unevenly due to the fact that the heating temperature is increased too much at one time and the property of the ink layer formed on the 3D curved glass cover plate is influenced is avoided.
The temperature set in step S2 is set according to the ink characteristics, such as the ink viscosity, baking parameters, baking time, etc., and the thickness of the ink to be sprayed, wherein the ink viscosity can be adjusted by controlling the diluent ratio. Of course, the temperature can also be set according to the characteristics of the actual product. Specifically, the method comprises the following steps.
In some other embodiments, the number of times the ink is sprayed may be only one, that is, when a single ink color is required for the product, the ink is sprayed only once. When the ink is sprayed only once, the pre-drying treatment of the ink only corresponds to one heating stage.
In step S3, after the pre-drying process is completed, the thickness of the pre-cured ink layer formed on the 3D curved glass cover plate is 3 μm to 8 μm.
In the step S4, the 3D curved glass cover plate with the pre-cured ink layer formed thereon is taken down from the positioning fixture and baked, and the pre-cured ink layer is further baked to form the ink layer, wherein the baking temperature is 80-170 ℃. The method specifically comprises the following operations:
placing the 3D glass cover plate taken down from the positioning jig on a fixing frame to fix the 3D glass cover plate, wherein the fixing frame is an existing clamp or other frame bodies capable of fixing the 3D glass cover plate, and no specific limitation is made herein;
and placing the fixing frame bearing the 3D glass cover plate in a baking device, and baking the 3D glass cover plate with the pre-cured ink layer, wherein the baking temperature is set to be 80-170 ℃. The baking device can be a baking box, a baking machine or other baking equipment with adjustable and controllable temperature.
In step S4, the baking of the 3D curved glass cover plate with the pre-cured ink layer is to further dry the remaining solvent in the pre-cured ink layer, so that the pre-cured ink layer is dried to form an ink layer, and the ink layer is more attached to the electronic product.
In some specific embodiments, after the baking process is performed on the 3D curved glass cover plate in step S4, the method further includes the following steps: spraying and printing primer on one side of the 3D curved glass cover plate where the ink layer is formed, and carrying out heat treatment on the 3D curved glass cover plate sprayed with the primer, wherein the heat treatment temperature is as follows: the heat treatment time is 10-50min at the temperature of 120 ℃ and 170 ℃.
The main component of the spray primer is resin substances, specifically, acrylic resin substances, and the main function of the spray primer is to increase the dyne value of the ink layer formed on the 3D curved surface glass cover plate, the dyne value of the ink layer, namely, the characteristic value of the surface tension coefficient of the ink layer, wherein the larger the dyne value of the ink layer is, the smaller the surface tension coefficient of the corresponding ink layer is, so that the bonding performance of the 3D curved surface glass cover plate and the electronic equipment is better increased.
After the primer is sprayed, the 3D curved glass cover plate after the primer is sprayed needs to be subjected to heat treatment, the primer is cured in the process of hot processing, and the ink layer formed on the 3D curved glass cover plate after baking is further cured, so that in the process of curing the primer, the ink layer formed on the 3D curved glass cover plate and the primer have a certain mutual fusion effect, and the quality of the finally formed 3D curved glass cover plate is ensured.
After the 3D curved surface glass cover plate sprayed with the primer is subjected to heat treatment, the method further comprises the following steps: the method comprises the following steps of cooling the 3D curved surface glass cover plate, carrying out laser etching on the 3D curved surface glass cover plate after cooling, setting IR holes, camera holes, logo or window area frame repairing, carrying out ultrasonic cleaning on the 3D curved surface glass cover plate after carrying out laser etching, and cleaning and removing residual primer in a laser etching area.
The main equipment that laser radium carving used is laser marking machine, at first adjusts laser wavelength and power for the printing ink layer absorbs the laser of specific wavelength, and the priming paint layer can't absorb the laser of this specific wavelength, lets the printing ink layer absorb laser energy and makes its temperature rise, thereby makes the radium carving district that needs sculpture IR hole or make a video recording hole in the printing ink layer get rid of by the burning, thereby forms IR hole or make a video recording hole. After the IR holes or the camera holes are formed, the 3D curved glass cover plate needs to be further placed in an ultrasonic cleaning machine to clean and remove the primer which is not removed by the laser in the laser etching area.
After laser etching and cleaning are completed, the method further comprises the following steps: and printing a logo related to the product on the 3D curved glass cover plate by adopting a silk-screen printing or transfer printing method.
After the logo of the product is printed on the 3D curved glass cover plate by adopting a silk-screen or transfer printing method, the method further comprises the following steps: and spraying an AF film on the surface of the 3D curved glass cover plate, which is far away from the surface where the ink layer is formed, by adopting a spraying or vacuum coating mode, wherein the AF film has the characteristics of good oil solubility and water solubility, the water drop angle can reach 117 degrees, and the fingerprint resistance effect of the 3D curved glass cover plate can be well improved.
In this embodiment, the method includes the following specific steps:
s1: ink-jet printing and pre-drying treatment: in the ink-jet printing ink area of the 3D curved glass cover plate, a design drawing is slightly larger than a standard drawing, a window area in the middle is transparent, various colors can be printed, black is taken as an example, the printing of full color can be realized by adopting CMYK (four-color mode printing) in principle, the ink-jet positioning jig for fixing the 3D curved glass cover plate is made of metal materials with good heat conductivity, a heating pad is arranged below the ink-jet positioning jig, the uniformity of the whole plate is better, the temperature is 40-70 ℃, the ink overflow is prevented, and the temperature can be adjusted according to the ink property;
s2: pre-baking: baking for 5-10 minutes in a baking oven at 80-170 ℃ to pre-cure the ink;
s3: spraying a primer: spraying and printing primer on the printing ink, wherein the printing ink is basically transparent, the printing ink dyne value is mainly increased and can reach more than 38, and the 3D glass cover plate and the display screen can be conveniently attached;
s4: baking: baking at the temperature of 120 ℃ and 170 ℃ to cure the ink and the primer, wherein the ink and the primer are both IR ink (the IR ink is ink which can selectively absorb light with different wavelengths), and the ink can be cured by heating;
s5: laser etching: and adjusting laser power, and enabling the ink to absorb laser energy to heat and burn, wherein the absorption wavelength of the primer is inconsistent with that of the ink, and the laser cannot be removed. Processing an IR hole (infrared sensing hole) and a camera hole in the ink area;
s6: ultrasonic cleaning: cleaning the 3D curved surface glass cover plate by adopting a cleaning agent with a special proportion, and removing primer residues which are not removed in the laser etching area;
s7: and (3) silk-screen printing: printing Logo or other patterns on glass by adopting a traditional screen printing method or a pad printing method, wherein a printing area can be slightly larger than a Logo area or a pattern area;
s8: coating an AF film: an AF film is plated on the surface, which is not sprayed with the printing ink, of the 3D curved glass cover plate in a spraying or vacuum coating mode, so that the fingerprint resistance effect is improved; when the spraying is adopted, the device can be placed on a specific positioning jig, and AF is prevented from being sprayed to the surface sprayed with the printing ink to influence the dyne value.
S9: and (7) packaging and delivering.
Referring to fig. 2, in a second embodiment of the present invention, a method for processing a glass back cover plate P10 is provided:
the processing method P10 of the glass back cover plate specifically comprises the following steps:
step P11: plating NCVM film on glass rear cover: the NCVM refers to a non-conductive electroplated layer which does not influence mobile phone signals, and generally indium (In) or tin (Sn) is plated to ensure that the film layer has good light transmission;
step P12: ink-jet printing a colored pattern on the NCVM film of the glass rear cover;
step P13: pre-baking to form a pre-cured colorful pattern layer: baking in a baking line at 80-170 ℃ to solidify the color ink pattern;
step P14: laser etching: engraving laser engraving areas such as Logo, product model, manufacturer information and the like on the rear cover;
step P15: printing required ink (including white) on the laser etching area;
step P16: spraying white ink and baking to form a white ink layer;
step P17: spraying black ink and baking to form a black ink layer;
step P18: and (7) packaging and delivering.
Before the step P11, the method further includes fixing the rear glass cover on an inkjet positioning fixture.
Between the above steps P11 and P12, the ink sprayed on the glass rear cover is subjected to a pre-drying process while the ink is sprayed while maintaining the temperature of the glass rear cover in the range of 40 to 70 c, wherein the temperature control manner is the same as that of the first embodiment.
Similarly, between steps P14 and P15, the method further comprises the step of pre-drying the ink sprayed on the glass rear cover while spraying the ink while maintaining the temperature of the glass rear cover in the range of 40-70 ℃.
And between steps P16 and P17 further comprising: and spraying the ink on the glass rear cover with the white ink layer formed, maintaining the temperature range of the glass rear cover at 40-70 ℃, and pre-drying the ink sprayed on the glass rear cover.
Referring to fig. 3, a third embodiment of the present invention provides an ink jet apparatus 100 for a glass cover plate, which is used for performing ink jet processing on the glass cover plate, wherein the ink jet apparatus 100 for a glass cover plate comprises an ink jet positioning fixture 10, an ink jet module 20 and a control module 30. The ink-jet positioning jig 10 is used for fixing the glass cover plate and has a heating effect at the same time so as to heat the glass cover plate, the ink-jet module 20 is used for spraying ink on the glass cover plate, the control module 30 is connected and controls the ink-jet module 20 to spray the ink on the glass cover plate, and meanwhile the control module 30 regulates and controls the ink-jet positioning jig 10 to heat.
Referring to fig. 4, the inkjet positioning fixture 10 is used for fixing the glass cover plate, the inkjet positioning fixture 10 includes a positioning frame 40 capable of being fixedly connected to the inkjet module 20 and a bearing member 50 for bearing the glass cover plate, the bearing member 50 includes a placing portion 501 for bearing the glass cover plate and a heating plate 508 for heating the glass cover plate, and the heating plate 508 is disposed on one side of the supporting plate 502 away from the placing portion 501. The positioning frame 40 is provided with a fixing portion 407 for fixing the carrier 50. The carrier 50 is detachably engaged with the fixing portion 407.
Referring to fig. 5, the control module 30 includes a temperature control module 301 and a spraying program control module 302, wherein the temperature control module 301 is connected to the inkjet positioning fixture 10 and is used for adjusting and controlling the heating temperature and the heating time of the inkjet positioning fixture 10. The spraying program control module 302 is connected to the ink jet module 20 and is used for controlling the ink spraying speed and the ink spraying amount of the ink jet module 20.
After the glass cover plate is placed in the placing part 501, the control module 30 regulates and controls the temperature control module 301 to heat the temperature of the heating plate 508 to 30-40 ℃, the control module 30 is connected with the spraying program control module 302 to control the ink-jet module 20 to spray ink on the glass cover plate, meanwhile, the control module 30 controls the ink-jet positioning jig 10 to heat the glass cover plate, so that the temperature of the glass cover plate is raised to 40-70 ℃, the ink-jet positioning jig 10 finishes pre-drying treatment on the ink sprayed on the glass cover plate, partial thinner in the ink is volatilized, the viscosity of the ink is increased, the ink is prevented from overflowing around the glass cover plate, and a pre-cured ink layer with the thickness of 3-8 mu m is formed.
Specifically, the spraying program control module 302 is further configured to regulate and control the spraying amount and the spraying frequency of each spraying of the ink by the ink jet module 20, so as to better ensure the quality of the formed ink layer.
Meanwhile, the temperature control module 301 of the control module 30 is further configured to regulate and control the processing time of the pre-drying process of the glass cover plate and the processing temperatures of different processing stages.
The ink-jet positioning jig can be used for effectively and accurately controlling the temperature of the glass cover plate, so that the quality of an ink layer formed by spraying can be improved.
It is right glass apron carries out printing ink spraying many times, and less printing ink of spraying at every turn can guarantee to finally form the homogeneity on the printing ink layer of glass apron, and the spraying volume of avoiding printing ink once is more, and the printing ink spraying is inhomogeneous, leads to the relatively poor problem of quality on the printing ink layer that forms. Meanwhile, the temperature control module 301 regulates and controls the pre-drying and heating stages with different heating temperatures and heating times to correspond to ink spraying, so that the pre-curing treatment effect on the ink is further increased.
Referring to fig. 6 again, the supporting member 50 includes a supporting plate 502 and a heating plate 508, the supporting plate 502 is provided with a placing portion 501 for supporting a glass cover plate, and the heating plate 508 is disposed on a side of the supporting plate 502 away from the placing portion 501.
In some specific embodiments, the placing portion 501 is a groove 505 formed on the supporting plate 502, and the shape of the groove 505 matches with the outer contour and size of the glass cover plate. Specifically, the placing section 501 may be provided in a square shape. In order to enable the placing portion 501 to be better adapted to glass cover plates of different types of electronic devices, if more 3D glass cover plates are used in the field of existing electronic devices, the periphery of the placing portion 501 may be provided with a cambered surface with a certain radian, so that the 3D glass cover plates are placed inside the placing portion 501 in a fitting manner.
Referring to fig. 7, in some other embodiments of the present invention, the placing portion 501 includes a plurality of fixing bars 5011, and the placing portion 501 is formed by fixing a plurality of fixing bars 5011 on the supporting plate 502. The support plate 502 includes an X-direction and a Y-direction. The placing portions 501 are arranged in an array O × P, i.e., placing portions 501 in O rows and P columns are arranged. Specifically, the longitudinal direction of the placement portion 501 corresponds to the X direction of the support plate 502, and the row direction of the placement portion 501 corresponds to the Y direction of the support plate. Specifically, the value of O is 1 or 2, and the value of P is greater than or equal to 1. In order to make the placing portion 501 better adapted to glass covers of different sizes, the fixing bars 5011 along the Y direction and near the edge side of the supporting plate 502 have slidability, and the size of the placing portion 501 is adjusted by sliding the position of the fixing bars 5011. The fixing rod 5011 in the X direction is connected with an adjusting lever 5012, and the adjusting lever 5012 is slidably connected to the support plate 502. The position of the fixing rod 5011 in the Y direction is adjusted by pulling the position of the adjusting rod 5012, so that the size of the placing part 501 is adjusted, and glass cover plates of different sizes can be conveniently fixed.
With reference to fig. 7, the heating plate 508 is disposed on a side away from the placing portion 501, i.e., on a side of the supporting plate 502 away from the placing portion 501. The heating plate 508 may be fixed on the supporting plate 502 by means of adhesion, or may be detachably connected on the supporting plate 502 by means of screw connection or the like.
The carrier 50 is further provided with an electrical connection portion 509 electrically connected to the heating plate 508, the electrical connection portion 509 is disposed on the supporting plate 502, and the electrical connection portion 509 is elastically stretchable on the supporting plate 502. Specifically, one end of the electrical connection part 509 is fixed in the supporting plate 502 by an elastic member (not shown) and electrically connected to the heating plate 508, and the other end thereof can be exposed out of the end surface of the supporting plate 502. When the electrical connection portion 509 is pressed, the electrical connection portion 509 can be accommodated in the supporting plate 502, and when the elastic member is in a relaxed state, the electrical connection portion 509 exposes the end portion of the supporting plate 502. The electrical connection part 509 is elastically connected to the support plate 502, so that the electrical connection part 509 can be conveniently connected with an external circuit.
The outside of the carrier 50 is also provided with a control portion 5010 for adjusting the heating temperature of the heater plate 508. Specifically, the control portion 5010 may be a button or a knob or other member.
The glass cover plate can be well heated by the heating plate 508, and in the ink jet processing process of the glass cover plate, the heating plate 508 is heated to a certain temperature, so that the ink sprayed on the glass cover plate is dried more quickly, the ink is prevented from overflowing everywhere, the uniformity of an ink jet coating formed by drying is ensured, and meanwhile, the production efficiency is well improved.
Further, the control portion 5010 can be used to adjust the temperature of the heating plate 508 according to the nature of the ink to be sprayed on the glass cover plate, so as to better ensure the quality of the coating layer formed by spraying on the glass cover plate.
Referring to fig. 1, 8 and 9, the fixing portion 407 is provided with an electrical output interface 405 corresponding to the electrical connection portion 509. The positioning frame 40 is provided with a power supply circuit (not shown) connected to the corresponding electrical output interface 405 of each fixing portion 407. When the carrier 50 is placed in the fixing portion 407, the electrical connection portions 509 are inserted into the corresponding electrical output interfaces 405 to achieve electrical conduction.
Referring to fig. 10 and 11, the positioning frame 40 includes a fixing plate 401. The fixing portion 407 includes a plurality of positioning ribs 402, the fixing portion 407 is formed by fixing the plurality of positioning ribs 402 on the fixing plate 401, and the fixing portion 407 includes a positioning area M. Depending on the specific shape of the carrier 50, the fixing portion 407 may be configured as a rectangle or a square, or configured as another shape, as long as it is suitable for carriers 50 of different shapes, specifically, when the carrier 50 is placed on the fixing portion 407, the positioning rib 402 fixes the carrier 50 in the positioning area M in the fixing portion 407.
Referring to fig. 12, in some preferred embodiments, in order to enable the fixing portion 407 to be adapted to carriers 50 with different specifications, the positioning rib 402 may be provided in a multi-layer stepped form. As shown in fig. 9, the positioning ribs 402 include a first layer 4021 adjacent to the fixing plate 401 and a second layer 4022 on the first layer 4021, and the positioning regions M1 enclosed by the positioning ribs 402 of the first layer 4021 have a smaller size than the positioning regions M2 enclosed by the positioning ribs 402 of the second layer 4022.
It will be appreciated that the positioning ribs 402 may be provided in more than two layers to better accommodate carriers 50 of different sizes.
In some specific embodiments, a plurality of through holes 4011 penetrating through the fixing plate 401 are formed in the fixing plate 401 at positions corresponding to the positioning regions M1 or M2, and the through holes 4011 can reduce the weight of the positioning frame 40 and save the material for manufacturing the positioning frame 40.
In some other embodiments, the fixing portion 407 may also be a clamp disposed on the positioning frame 40, and the carrier 50 is clamped by the clamp when the carrier 50 is placed on the positioning frame 40. In addition, the fixing portion 407 may be a limiting groove opened above the positioning frame 40 and recessed below the fixing plate 401, and the shape of the limiting groove matches with the size of the bearing 50.
Referring to fig. 4 again, at least one opening 403 is disposed at a connection position of two adjacent positioning ribs 402, and the opening 403 is used to assist in picking and placing the carrier 50.
The positioning frame 40 further includes a plurality of positioning plates 404, the positioning plates 404 are provided with positioning holes 4041, and the positioning frame 40 is fixed on the glass cover plate ink jet device 100 through the positioning holes 4041 to perform ink jet processing on the glass cover plate.
The positioning frame 40 further includes a power input port 406 disposed on a side wall of the positioning frame 40, and the power input port 406 is connected to an external power source, so that a power supply line of the positioning frame 40 is in a conducting state, and when the supporting member 50 is placed in the fixing portion 407, the heating plate 508 is powered.
The specific steps of fixing the glass cover plate to be fixed by using the inkjet positioning jig 10 and then placing the glass cover plate on the inkjet device 100 for inkjet processing are as follows:
firstly, a glass cover plate needing ink jet processing is placed in a placing part 501 of the bearing member 50, and the glass cover plate is fixed by the placing part 501;
then, the carrier 50 carrying the glass cover plate is placed in the fixing portion 407 of the positioning frame 40, at this time, the electrical connection portion 509 of the carrier 50 is inserted into the electrical output interface 405 disposed on the positioning frame 40, so that electrical conduction is achieved between the electrical connection portion 509 and the electrical output interface 405;
then, the positioning frame 40 carrying the bearing 50 is placed on the glass cover plate ink jet device 100, and the positioning frame 40 is fixed on the glass cover plate ink jet device 100 through the positioning hole 4041 of the positioning frame 40;
before the glass cover plate is subjected to ink jet by the glass cover plate ink jet device 100, the positioning frame 40 heats the heating plate 508 through the power input port 406, so that the temperature of the heating plate 508 is raised, and then the glass cover plate ink jet device 100 is started to perform ink jet processing on the glass cover plate;
after the ink is jetted to the glass cover plate, the heating plate 508 continuously heats the glass cover plate, after the ink sprayed on the glass cover plate by the glass cover plate ink jet device 100 is dried, the positioning frame 40 is taken out from the glass cover plate ink jet device 100, the ink to be jetted after the ink jetting process is performed is taken out from the bearing member 50, and finally, the positioning frame 40 and the bearing member 50 are cleaned.
Compared with the prior art, the method has the advantages that the glass cover plate is subjected to ink spraying for multiple times, the glass cover plate is maintained to have different temperatures while each time of ink spraying is carried out, and the sprayed ink is subjected to pre-drying treatment; carry out the spraying many times to printing ink, less printing ink of spraying at every turn, can guarantee to finally form the homogeneity on the printing ink layer of glass apron, the spraying volume of avoiding printing ink once is more, the printing ink spraying is inhomogeneous, the relatively poor problem of quality on the printing ink layer that leads to forming, and the spraying corresponds the predrying process of different temperature ranges each time, better make the solvent part in the printing ink volatilize, increase the consistency of printing ink, printing ink overflow everywhere before avoiding toasting the glass apron, the homogeneity on the printing ink layer that the influence toasted after formation, the quality of 3D curved surface glass apron after the processing of improvement spraying is accomplished.
After the ink spraying is finished, the pre-drying treatment time is kept for 2-10min, the volatilization amount of the sprayed ink is 40-60%, and the good pre-drying treatment of the ink layer is further ensured.
In each heating stage, the heating temperature has a heating rate of 0.2 ℃/S-2 ℃/S. The heating temperature is gradually increased at a set speed, so that the phenomenon that the ink layer is heated unevenly due to the fact that the heating temperature is increased too much at one time and the property of the ink layer formed on the glass cover plate is influenced is avoided.
In another embodiment of the present invention, an ink jet device for a glass cover plate includes an ink jet positioning fixture, an ink jet module and a control module. Inkjet positioning jig includes a hot plate, the setting of hot plate can be fine carries out heat treatment to glass apron, simultaneously control module can set up the hot plate and have different heating temperature and heat time according to the nature of the different printing ink of spraying and the actual need of product, improves and forms the quality of the printing ink layer on the glass apron.
The control module is set to comprise a temperature control module and a spraying program control module, the temperature control module is used for adjusting and controlling the heating temperature and the heating time of the positioning jig, and the spraying program control module is used for controlling the spraying amount and the spraying times of the ink jet module. The quality of the ink sprayed on the glass cover plate is better regulated and controlled by the temperature control module, and meanwhile, the quality of the formed ink layer can be well controlled by the spraying amount and the spraying times under the control of the setting of the spraying program control module.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The glass cover plate ink-jet processing method is characterized in that: the method comprises the following steps:
performing at least two times of ink spraying on the glass cover plate in the temperature range of 40-70 ℃, and maintaining the glass cover plate to have different temperatures while performing each time of ink spraying so as to perform pre-drying treatment on the sprayed ink; after the pre-drying treatment is finished, forming a pre-cured ink layer with a preset thickness on the glass cover plate; and baking the glass cover plate with the pre-cured ink layer to form the ink layer, wherein the baking temperature is 80-170 ℃, the pre-drying time is 2-10min, the volatilization amount of the sprayed ink is 40-60%, the pre-drying treatment comprises a plurality of heating stages corresponding to ink spraying, and each ink spraying corresponds to one heating stage.
2. The glass cover inkjet processing method of claim 1, wherein: the glass cover plate comprises a 3D curved surface glass cover plate and a glass rear cover plate.
3. The glass cover inkjet processing method of claim 2, wherein: the pre-drying treatment at least comprises the following two stages:
a first heating stage: heating at 40-55 deg.C for 1-3 min;
a second heating stage: the heating temperature is 55-70 deg.C, and the heating time is 5-9 min.
4. The glass cover plate inkjet processing method according to claim 3, wherein: in the first heating stage and the second heating stage, the heating temperature has a heating rate of 0.2 ℃/S-2 ℃/S.
5. The glass cover inkjet processing method of claim 1, wherein: after the glass cover plate is baked, the method further comprises the following steps: spraying and printing primer on one side of the glass cover plate on which the ink layer is formed, and carrying out heat treatment on the glass cover plate on which the primer is sprayed, wherein the heat treatment temperature is as follows: the heat treatment time is 10-50min at the temperature of 120 ℃ and 170 ℃.
6. The glass cover plate inkjet processing method according to claim 5, wherein: the sprayed ink at least comprises one or more of yellow ink, magenta ink, cyan ink or black ink, and the primer comprises resin substances.
7. The glass cover plate inkjet processing method according to claim 6, wherein: after the glass cover plate sprayed with the primer is subjected to heat treatment, the method further comprises the following steps: cooling the glass cover plate, performing laser etching on the glass cover plate after cooling, setting an IR hole, a camera hole, a logo or repairing a window area frame, performing ultrasonic cleaning on the glass cover plate after performing laser etching, and cleaning and removing primer remained in the laser etching area; and then, printing an IR hole or a camera hole or a product logo on the glass cover plate by adopting a silk-screen printing or pad printing method.
8. Glass apron inkjet device, it is used for carrying out inkjet for the glass apron and handles, its characterized in that: the glass cover plate ink-jet device comprises an ink-jet positioning jig, an ink-jet module and a control module; the ink-jet positioning jig is used for fixing the glass cover plate; inkjet positioning jig holds the piece including holding, it includes a backup pad and hot plate to hold the piece, be provided with a plurality of portions of placing that are used for bearing glass apron on the backup pad, the portion of placing is the recess, the hot plate sets up keep away from on the backup pad one side of the portion of placing glass apron is put into after the portion of placing, control module connects and controls the hot plate heating, control module connection control inkjet module spouts the oil ink to glass apron, the portion of placing is provided with the location area, the size of location area with the size phase-match of glass apron.
9. The glass cover ink jet device of claim 8, wherein: the control module comprises a temperature control module and a spraying program control module, the temperature control module is used for adjusting and controlling the heating temperature and the heating time of the positioning jig, and the spraying program control module is used for controlling the spraying amount and the spraying times of the ink jet module.
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| CN110978826A (en) * | 2019-11-29 | 2020-04-10 | 深圳市星三力光电科技有限公司 | Production method of integrated black cover plate |
| KR102645392B1 (en) * | 2021-07-28 | 2024-03-11 | 한국다이요잉크 주식회사 | Method for manufacturing curved cover member for electronic device |
| CN116080292A (en) * | 2022-12-09 | 2023-05-09 | 合肥金龙浩科技有限公司 | Ink-jet printing process of 3D vehicle-mounted glass |
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