CN111923626A - Cover plate glass inking method - Google Patents
Cover plate glass inking method Download PDFInfo
- Publication number
- CN111923626A CN111923626A CN202010784774.3A CN202010784774A CN111923626A CN 111923626 A CN111923626 A CN 111923626A CN 202010784774 A CN202010784774 A CN 202010784774A CN 111923626 A CN111923626 A CN 111923626A
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- Prior art keywords
- pad printing
- steel plate
- glass
- rubber head
- cover plate
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- 239000005357 flat glass Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000007649 pad printing Methods 0.000 claims abstract description 191
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 145
- 239000010959 steel Substances 0.000 claims abstract description 145
- 229920001971 elastomer Polymers 0.000 claims abstract description 117
- 239000011521 glass Substances 0.000 claims abstract description 70
- 238000007639 printing Methods 0.000 claims abstract description 30
- 238000010023 transfer printing Methods 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000005530 etching Methods 0.000 claims description 62
- 239000006059 cover glass Substances 0.000 claims description 38
- 238000003825 pressing Methods 0.000 claims description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000000741 silica gel Substances 0.000 claims description 13
- 229910002027 silica gel Inorganic materials 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 11
- 229920002545 silicone oil Polymers 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 102220518048 NAD-dependent protein deacetylase sirtuin-1_S47A_mutation Human genes 0.000 claims description 4
- 102220370916 c.136T>G Human genes 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 150000001993 dienes Chemical group 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 239000004848 polyfunctional curative Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005507 spraying Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007641 inkjet printing Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003854 Surface Print Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000006121 base glass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/34—Printing on other surfaces than ordinary paper on glass or ceramic surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
- B41F17/001—Pad printing apparatus or machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/12—Transfer pictures or the like, e.g. decalcomanias
-
- 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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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Toxicology (AREA)
- Ceramic Engineering (AREA)
- Textile Engineering (AREA)
- Vascular Medicine (AREA)
- Printing Methods (AREA)
Abstract
The invention relates to the field of 3D cover plate glass, and particularly discloses an inking method of cover plate glass, which comprises the following steps of S1, manufacturing a pad printing rubber head according to the size and the shape of the cover plate glass; s2, manufacturing a transfer printing steel plate according to the size and the shape of the cover plate glass and the inking area of the cover plate glass; s3, mounting the pad printing rubber head, the pad printing steel plate, an oil cup filled with ink and the glass cover plate on a pad printing machine; and S4, starting the pad printing machine to ink the glass cover plate. According to the invention, the cover plate glass is inked by using a transfer printing inking mode, the defects of large solvent volatilization pollution and large solvent consumption caused by a spraying scheme are overcome, the cost is greatly reduced, the overall color effect is uniform and consistent, the printing position of the ink can be accurately controlled within +/-0.03 mm, and the thickness of the ink is controlled within +/-0.002 mm.
Description
Technical Field
The invention relates to the field of 3D cover plate glass, in particular to an inking method of cover plate glass.
Background
3D cover plate glass mainly used cell-phone cover shell, the middle frame mainly used cell-phone front panel links up the region with the back lid in the middle of, compares with traditional 2.5D glass, ceramic cover plate and metal backplate, and 3D glass can make the display area of screen increase, can prevent the glare, has strong third dimension, has more aesthetic feeling and degree of grasp, and the performance is more superior. 3D glass is expected to be widely used in 3C products such as tablet computers, smart phones, smart watches, instrument panels and other wearable products's screen apron and backplate in the future. With the coming of the 5G era and the era of the full-face screen of the mobile phone glass, the attention of the 3D cover plate glass and the glass middle frame is continuously promoted.
Inkjet printing technology is currently one of the most promising printing technologies for 3D inking. However, because the inkjet printer is extremely complex, the development process of the inkjet printer relates to mechanical platform OEM production, hardware development, prototype assembly, logic unit writing, software development, complete machine integration test and the like, so that the inkjet printer has strong specialization, long development period, large demand change, difficulty in refining the test work and the like. Therefore, the development of an ink jet printer cannot be successful in a short period of time, and must be gradually completed in the form of multi-stage development. In addition 3D's novel product, its printing degree of difficulty is big, and printing ink thickness management and control difficulty, customer increase with each other to the requirement of product, when 3D product surface printing ink thickness reaches the requirement, still guarantee that the whole colour effect of 3D product is even unanimous, just can reach customer's requirement. Furthermore, there are three major disadvantages of ink jetting: the solvent volatilization pollution is large, the solvent consumption is large, and the equipment and the maintenance cost are expensive, so that the problem is always solved. Therefore, there is a need for an inking method for 3D cover glass that improves the spray solution with respect to the disadvantages of high solvent evaporation contamination and high solvent consumption, and that is substantially less costly.
Disclosure of Invention
The invention provides a method for inking cover glass, and solves the technical problems that when the traditional ink jet printing technology is used for inking the cover glass, the solvent volatilization pollution is large, the solvent consumption is large, and the cost is high. In order to solve the technical problems, the invention provides an inking method of cover plate glass, which comprises the following steps:
s1, manufacturing a pad printing rubber head according to the size and the shape of the cover plate glass;
s2, manufacturing a pad printing steel plate according to the size, the shape and the inking area of the cover plate glass;
s3, mounting the pad printing rubber head, the pad printing steel plate, the oil cup filled with ink and the glass cover plate on a pad printing machine;
and S4, starting the pad printing machine to ink the glass cover plate.
This basic scheme uses the mode of bat printing inking to the glass of lapping, produce the mode of deformation in order to bear the seal through gluing the head and carry out the bat printing to glass of lapping, the position that can accurate management and control printing ink printing is within 0.03 millimeter, printing ink thickness control is within 0.002 millimeter, improved because printing ink has mobility, traditional ink jet mode printing ink easily flows and produces printing ink thickness change on the glass surface, the printing ink that the inkjet process received the environment cleanliness factor problem great and produced is inhomogeneous, the relatively poor problem of inking effect. And the invention carries on the inking by way of printing, compared with spraying scheme (the solvent that brings volatilizes and pollutes greatly and the solvent consumption is great), the consumption amount and volatility of the ink are relatively smaller, can lower costs.
Further, the step S1 specifically includes the steps of:
s11, manufacturing a rubber head mould according to the size and the shape of the cover plate glass;
s12, preparing the silica gel and the silicone oil according to a first preset proportion, and uniformly stirring;
s13, standing for a first preset time period, adding an olefin hardener into the mixture of the silica gel and the silicone oil according to a second preset proportion, and fully stirring;
s14, after standing for a second preset time period, pouring a mixture of the silica gel, the silicone oil and the hardening agent into the rubber head mold;
and S15, covering a wood board, standing for a third preset time period, and demolding the rubber head mold to obtain the transfer printing rubber head.
The rubber head mold is manufactured according to the size and the shape of the cover plate glass, so that the pad printing rubber head can just cover the cover plate glass, and the accuracy of the size and the shape of a pad printing pattern is guaranteed.
Furthermore, the first preset proportion is that the mass ratio of the silica gel to the silicone oil is 100: 20-60;
the second preset proportion is 1.6% -2.0% of the mass of the mixture of the silica gel and the silica oil;
the first preset time period is 4-6 minutes;
the second preset time period is 5-7 minutes;
the third preset time period is 3-4 hours.
This scheme is passed through first predetermined proportion is equipped with the solution preparation with the second predetermined proportion and is glued the head for the first soft or hard degree of gluing of producing is moderate, and the deformation degree that the bat printing glue head produced when contact glass apron is moderate, lets glue the head when producing deformation, can cover glass apron completely, and printing ink is colored evenly.
Further, the step S2 specifically includes the steps of:
s21, manufacturing a film according to the size, the shape and the inking area of the cover plate glass;
s22, cleaning the steel plate with Tianna water or developing water, and pouring the prepared photosensitive paste on the etched surface of the steel plate after dust removal;
s23, placing the steel plate on a sizing machine to rotate, so that the photosensitive paste uniformly covers the etched surface of the steel plate;
s24, placing the steel plate coated with the photosensitive paste into an oven to be baked according to the first baking condition;
s25, after the steel plate is cooled, placing a film at the position of the steel plate needing to be etched, covering the steel plate with glass, and exposing the steel plate for a fourth preset time period, wherein the position of the steel plate needing to be etched is determined according to the shape and the size of the cover plate glass and the inking area;
s26, taking off the glass, and washing the steel plate with developing water for a fifth preset time period;
s27, washing the steel plate with clean water, drying the steel plate, covering the positions of the steel plate, which are not etched, with gummed paper, and then filling sand holes in the positions of the steel plate, which are etched;
s28, pouring the etching solution into the steel plate, etching for a sixth preset time period, and controlling the etching depth within a preset etching depth range;
and S29, washing the etching solution on the surface of the steel plate by water, tearing off the gummed paper, and wiping the photosensitive paste on the surface of the steel plate by using plate washing water to obtain the final steel plate, namely the transfer printing steel plate.
According to the scheme, the film is manufactured according to the size and the shape of the cover plate glass and the inking area, and the steel plate is etched, so that the etching area of the steel plate corresponds to the pattern of the cover plate glass, and the accuracy of the size and the shape of the pad printing pattern is guaranteed.
Further, in the present invention,
the photosensitive paste is alkadiene or phenolic resin;
the first baking condition is that the baking temperature is 160 +/-10 ℃ and the baking time is 18 +/-2 minutes;
the fourth preset time period is 10-40 seconds;
the fifth preset time period is 30-60 seconds;
the sixth preset time period is 1-5 minutes;
the preset etching depth range is 8-20 microns.
According to the scheme, the steel plate is etched through the preset etching time period and the preset etching depth range, the printing ink can sufficiently flow into the pad printing steel plate etching area, the problem that the rubber head is uneven in oil taking and further the problem that the coloring is uneven is solved.
Further, the step S4 specifically includes the steps of:
s41, attaching the transfer printing steel plate to the lower part of the oil cup; the oil cup moves to the pad printing steel plate etching area; opening the oil cup to enable ink to flow into the etching area of the transfer printing steel plate; closing the oil cup;
s42, moving the oil cup to a non-etching area of the transfer printing steel plate, and extending out the transfer printing steel plate; the pad printing rubber head is pressed down at a first pressing speed, when the pad printing rubber head is away from the pad printing steel plate by a first distance, the pad printing rubber head is pressed down at a second pressing speed, the pad printing rubber head is pressed down to an etching area of the pad printing steel plate to take ink, and the pad printing rubber head is kept for a seventh preset time period;
s43, lifting the pad printing rubber head at a first lifting speed, retracting the pad printing steel plate, and moving the oil cup to a steel plate etching area;
s44, pressing down the pad printing rubber head at a third pressing-down speed, and when the pad printing rubber head is away from the cover glass by a second distance, blowing hot air to the pad printing rubber head by an air blowing device at a first temperature, pressing down at a fourth pressing-down speed simultaneously, so that the ink on the pad printing rubber head is printed on the cover glass of the base, and keeping the pressure for an eighth preset time period;
and S45, lifting the pad printing rubber head at a second lifting speed, and then completing the first pad printing of the cover glass.
Furthermore, the first pressing speed is 1500-2000 rpm;
the first distance is 20-50 mm;
the second pressing speed is 10-40 r/min;
the seventh preset time period is 0.5-1 second;
the first rising speed is 20-200 r/min;
the third descending speed is 1500-2000 r/min;
the second distance is 20-50 mm;
the first temperature is 40-60 ℃;
the fourth pressing speed is 10-40 r/min;
the eighth preset time period is 0.5-2 seconds;
the second rising speed is 20-200 r/min.
The pad printing pressing speed of the pad printing rubber head is divided into two sections, the pad printing speed is ensured, the speed of the rubber head is not too high when the rubber head is in contact with the cover plate glass, the pad printing rubber head is kept for a certain period of time when ink is taken from an etching area of a pad printing steel plate and when the pad printing rubber head is printed on the cover plate glass, and the cover plate glass can be fully inked; when the pad printing rubber head is away from the cover plate glass by a second distance, the air blowing device blows hot air out of the pad printing rubber head, so that the cover plate glass can be fully inked and the ink can be dried in time when the inking is completed.
Furthermore, the cover plate glass is 3D cover plate glass, and the size and the shape of the pad printing surface of the pad printing rubber head, the contact surface of the pad printing steel plate and the printing bearing surface of the 3D cover plate glass are the same;
the step S4 further includes the steps of:
S46A, repeating the steps S41-S45 to finish secondary pad printing of the 3D cover plate glass;
S47A, baking the 3D cover plate glass under a second baking condition, wherein the second baking condition is that the baking temperature is 160 +/-10 ℃ and the baking time is 30 +/-5 minutes.
According to the scheme, after the first pad printing is finished, the cover plate glass is subjected to second pad printing, so that the problem that the printing ink is not completely covered on the glass cover plate during the first inking process, and the pattern is not completely printed on the glass cover plate is solved; after the pad printing and inking are finished, the cover plate glass is sent into an oven to be baked for color fixation, and the cover plate glass is prevented from fading in the subsequent using process.
Further, the cover glass is a glass middle frame; the shape of the pad printing rubber head is as follows: the size of the transfer printing rubber head is smaller than that of the glass middle frame, so that the outer side wall of the transfer printing rubber head can just be in full contact with the inner side wall of the glass middle frame; the size and the shape of the pad printing surface of the pad printing rubber head are the same as those of the pad printing steel plate etching area, so that the convex part of the pad printing rubber head can be just contacted with the steel plate etching area;
the step S4 further includes the steps of:
S46B, repeating the steps S41-S45 to finish secondary pad printing on the cover plate glass;
S47B, baking the glass middle frame under a third baking condition;
S48B, after the glass middle frame is turned over for 180 degrees, performing pad printing on the glass middle frame twice according to the steps S41-S45;
and S49B, baking the glass middle frame under a fourth baking condition.
This scheme is after twice to glass center bat printing, and 180 the bat printing is twice again of upset, avoids the bat printing to glue the head when not overturning the bat printing, glues the head and can't make glass center inside wall adhere to printing ink completely, especially the problem that lack the printing ink can appear in the center below, overturns after the bat printing again and bat printing makes printing ink cover to the center inside wall completely.
Furthermore, the third baking condition is that the baking temperature is 160 +/-10 ℃, and the baking time is 3-6 minutes; the fourth baking condition is that the baking temperature is 160 +/-10 ℃ and the baking time is 30 +/-5 minutes.
Drawings
FIG. 1 is a flow chart illustrating the steps of a method for inking a cover glass according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a pad printing head according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of a steel plate etching area provided in example 1 of the present invention;
fig. 4 is a flowchart of step S4 in fig. 1 according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of initial positions of a pad printing glue head, a pad printing steel plate, an oil cup in an etching area of the pad printing steel plate and a glass cover plate according to an embodiment of the invention;
FIG. 6 is a schematic view of the initial positions of the pad printing head, the pad printing steel plate, the ink cup in the etching area of the pad printing steel plate and the glass cover plate step S42 according to the embodiment of the invention;
FIG. 7 is a schematic view of the pad printing head, the pad printing steel plate, the ink cup in the etching area of the pad printing steel plate and the end position of the glass cover plate step S42 according to the embodiment of the invention;
FIG. 8 is a schematic view of the pad printing head, the pad printing steel plate, the ink cup in the etching area of the pad printing steel plate and the end position of the glass cover plate step S43 according to the embodiment of the invention;
FIG. 9 is a schematic view of a pre-pad 3D cover glass provided in example 1 of the present disclosure;
FIG. 10 is a diagram illustrating the effect of the pad printed 3D cover glass according to example 1 of the present invention;
fig. 11 is a schematic structural view of a pad printing head according to embodiment 2 of the present invention;
FIG. 12 is a schematic view of an etched area of a steel plate provided in example 2 of the present invention;
fig. 13 is a flowchart of step S4 in fig. 1 according to embodiment 2 of the present invention;
FIG. 14 is a schematic view of a glass middle frame before pad printing provided in example 2 of the present invention;
FIG. 15 is an illustration of the effect of the glass middle frame after pad printing provided in example 2 of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which are given solely for the purpose of illustration and are not to be construed as limitations of the invention, including the drawings which are incorporated herein by reference and for illustration only and are not to be construed as limitations of the invention, since many variations thereof are possible without departing from the spirit and scope of the invention.
Example 1
When the cover glass is 3D cover glass, the inking method comprises the following steps:
the cover plate glass needs to be cleaned before being inked, the cover plate glass is transferred to an inserting frame ultrasonic machine to be cleaned, and parameters are set to be 40-110 ℃/40-60 kHz/60-120 s. As shown in fig. 1, a flowchart of the steps of the method for inking a cover glass according to an embodiment of the present invention includes the steps of:
s1, manufacturing a pad printing rubber head according to the size and the shape of the cover plate glass;
s2, manufacturing a pad printing steel plate according to the size and the shape of the cover plate glass and the inking area of the cover plate glass;
s3, mounting the pad printing rubber head, the pad printing steel plate, the oil cup filled with ink and the glass cover plate on a pad printing machine;
and S4, starting the pad printing machine to ink the glass cover plate.
The step S1 of manufacturing the pad printing head specifically includes the steps of:
s11, manufacturing a rubber head mold according to the size and the shape of the 3D cover plate glass, thoroughly cleaning the rubber head mold, and placing the rubber head mold in a horizontal place; s12, silica gel according to mass ratio: pouring silicone oil =100: 20-60 into a measuring cup, and uniformly stirring; s13, standing for 4-6 minutes, adding an olefin hardener accounting for 1.6-2.0% of the mixture of the silica gel and the silica oil, and fully and uniformly stirring; s14, standing for 5-7 minutes, and pouring a mixture of the silica gel, the silicone oil and the hardening agent into a rubber head mold; s15, covering a wood plate, and demoulding the rubber head after 3-4 hours to finish the manufacturing.
The structure of the pad printing rubber head for pad printing the cover glass is shown in figure 2.
The step S2 of manufacturing the transfer printing steel plate comprises the following specific steps:
s21, designing and manufacturing a film according to the size and the shape of the cover plate glass and the inking area; s22, cleaning the steel plate by using Tianna water or developing water, and pouring the prepared photosensitive paste (alkadiene or phenolic resin) on the etched surface of the steel plate after dust removal; s23, placing the steel plate on a sizing machine to rotate, and enabling the photosensitive paste to uniformly cover the etched surface of the steel plate; s24, placing the steel plate coated with the photosensitive paste into an oven to bake (160 +/-10 ℃ for 18 +/-2 minutes); s25, after the steel plate is cooled, placing a film at a position, needing to be etched, of the steel plate, covering the steel plate with glass, and exposing the steel plate for 10-40 seconds, wherein the position, needing to be etched, of the steel plate is determined according to the shape and the size of the cover plate glass and an inking area, as shown in figure 3, a position 1 is an etching area, and a position 2 is a non-etching area; s26, taking down the glass, and washing the steel plate for 30-60 seconds by using developing water; s27, cleaning the steel plate by using clean water, drying the water of the steel plate by blowing, covering the position of the non-etching area by using adhesive paper, and then filling sand holes in the etching area; s28, pouring etching liquid for etching for 1-5 minutes, and controlling the etching depth to be 8-20 micrometers; s29, washing the etching solution with water, tearing off the gummed paper, wiping the photosensitive paste with plate washing water, and finishing the manufacturing of the steel plate.
The specific steps of step S3 are: preparing an etched steel plate, attaching the steel plate to an oil cup after a matched oil cup is filled with ink, installing the steel plate on a pad printing machine, fixing the oil cup, and enabling the steel plate to move back and forth below the oil cup. The pad printing rubber head is arranged on a clamp above the steel plate, the base is fixed below the pad printing steel plate, glass is placed on the base, the steel plate extends out, and the distance between a rubber head clamp platform and the fixed base is 250-350 mm. The initial positions of the pad printing rubber head, the oil cup, the pad printing steel plate and the glass cover plate are shown in figure 5, wherein 1 is a steel plate etching area, 3 is the pad printing rubber head, 4 is the oil cup, 5 is the pad printing steel plate, and 6 is the glass cover plate, when the initial position is reached, the pad printing rubber head is positioned right above the glass cover plate, the steel plate is positioned between the pad printing rubber head and the glass cover plate, the pad printing steel plate is attached below the oil cup, and the steel plate is in a retraction state at the moment.
The inking step S4, as shown in fig. 4, includes the steps of:
s41, attaching the transfer printing steel plate to the lower part of the oil cup; the oil cup moves to the pad printing steel plate etching area; opening the oil cup to enable ink to flow into the etching area of the transfer printing steel plate; closing the oil cup;
s42, moving the oil cup to the non-etching area of the transfer printing steel plate, and extending out the transfer printing steel plate; at the moment, the positions of the pad printing rubber head, the oil cup, the pad printing steel plate and the glass cover plate are shown in figure 6, and the etching area of the pad printing steel plate is positioned right below the rubber head; pressing down the pad printing rubber head at a first pressing speed, pressing down the pad printing rubber head at a second pressing speed when the pad printing rubber head is away from the steel plate by a first distance, pressing down the pad printing rubber head to an etching area of the pad printing steel plate to take ink, and maintaining the pressure for a seventh preset time period; at this time, the positions of the pad printing rubber head, the oil cup, the pad printing steel plate and the glass cover plate are shown in figure 7;
s43, lifting the pad printing rubber head at a first lifting speed, retracting the pad printing steel plate, and moving the oil cup to an etching area of the pad printing steel plate; at this time, the positions of the pad printing rubber head, the oil cup, the pad printing steel plate and the glass cover plate are shown in figure 8, and the pad printing rubber head bears and prints ink in an etching area of the pad printing steel plate;
s44, pressing down the pad printing rubber head at a third pressing-down speed, and when the pad printing rubber head is away from the cover glass by a second distance, blowing hot air to the pad printing rubber head by an air blowing device at a first temperature, pressing down at a fourth pressing-down speed simultaneously, so that the ink on the pad printing rubber head is printed on the cover glass of the base, and keeping the pressure for an eighth preset time period;
and S45, lifting the pad printing rubber head at a second lifting speed, and then completing the first pad printing of the cover glass.
S46A, repeating the steps S41-S45 to finish secondary pad printing of the 3D cover plate glass;
S47A, baking the 3D cover plate glass under a second baking condition.
The inking step S4 specifically includes: s41, attaching the transfer printing steel plate to the lower part of the oil cup; opening the oil cup to enable ink to flow into the etching area of the pad printing steel plate, and closing the oil cup; s42, removing an oil cup, descending the rubber head to begin to take oil, wherein the descending speed is 1500-2000 rpm (first descending speed), when the rubber head is 20-50 mm away from the steel plate (first distance), the descending speed is reduced to 10-40 rpm (second descending speed), and after the rubber head is completely contacted with the steel plate etching area, the rubber head stays for 0.5-1 second (seventh preset time period) to finish oil taking; s43, after oil extraction is finished, the rubber head rises at a rising speed of 20-200 r/min (first rising speed), and meanwhile, the steel plate retracts; s44, descending the rubber head at a third descending speed of 1500-2000 rpm, when the rubber head is 20-50 mm away from the base glass (second distance), blowing hot air at 40-60 ℃ (first temperature) by an air blowing device fixed at the position opposite to the rubber head, and simultaneously reducing the descending speed of the rubber head to 10-40 rpm (fourth descending speed), wherein the rubber head is pressed down and deformed after being completely contacted with the glass cover plate on the base, stays for 0.5-2 seconds (eighth preset time period), and the ink on the rubber head is printed on the glass cover plate on the base; s45, raising the rubber head to the initial position at a raising speed of 20-200 revolutions per minute (second raising speed) to finish one-time pad printing; S46A, repeating the steps once, and performing pad printing for the second time; S47A, taking down the transfer printing product which is finished twice, and baking under a second baking condition, wherein the baking temperature is 160 +/-10 ℃, and the baking time is 30 +/-5 minutes.
Fig. 9 is a schematic view of pad printing front cover plate glass provided in embodiment 1 of the present invention, and fig. 10 is a diagram of an effect of pad printing rear cover plate glass provided in embodiment 1 of the present invention.
Example 2
When the cover glass is a glass middle frame, the step before pad printing twice (i.e., the step before step S45) is the same as that of example 1, the pad printing rubber head structure of the pad printing glass middle frame is as shown in fig. 11, and fig. 12 is a schematic diagram of a steel plate etching area, where position 1 is an etching area and position 2 is a non-etching area. As shown in fig. 13, the inking step S4 includes:
s41, attaching the transfer printing steel plate to the lower part of the oil cup; the oil cup moves to the pad printing steel plate etching area; opening the oil cup to enable ink to flow into the etching area of the transfer printing steel plate; closing the oil cup;
s42, moving the oil cup to the pad printing steel plate non-etching area; the pad printing rubber head is pressed down at a first pressing speed, when the pad printing rubber head is away from the pad printing steel plate by a first distance, the pad printing rubber head is pressed down at a second pressing speed, the pad printing rubber head is pressed down to an etching area of the pad printing steel plate to take ink, and the pad printing rubber head is kept for a seventh preset time period;
s43, lifting the pad printing rubber head at a first lifting speed, retracting the pad printing steel plate, and moving the oil cup to an etching area of the pad printing steel plate;
s44, pressing down the pad printing rubber head at a third pressing-down speed, and when the pad printing rubber head is away from the cover glass by a second distance, blowing hot air to the pad printing rubber head by an air blowing device at a first temperature, pressing down at a fourth pressing-down speed simultaneously, so that the ink on the pad printing rubber head is printed on the cover glass of the base, and keeping the pressure for an eighth preset time period;
and S45, lifting the pad printing rubber head at a second lifting speed, and then completing the first pad printing of the cover glass.
S46B, repeating the steps S41-S45 to finish secondary pad printing on the cover plate glass;
S47B, baking the glass middle frame under a third baking condition;
S48B, after the glass middle frame is turned over for 180 degrees, performing pad printing on the glass middle frame twice according to the steps S41-S45;
and S49B, baking the glass middle frame under a fourth baking condition.
The first pressing speed is 1500-2000 r/min; the first distance is 20-50 mm; the second pressing speed is 10-40 r/min; the seventh preset time period is 0.5-1 second; the first rising speed is 20-200 r/min; the third descending speed is 1500-2000 r/min; the second distance is 20-50 mm; the first temperature is 40-60 ℃; the fourth pressing speed is 10-40 r/min; the eighth preset time period is 0.5-2 seconds; the second rising speed is 20-200 r/min; the third baking condition is that the baking temperature is 160 +/-10 ℃, and the baking time is 3-6 minutes; the fourth baking condition is that the baking temperature is 160 +/-10 ℃ and the baking time is 30 +/-5 minutes.
Different from the embodiment 1, after the second pad printing is completed, the glass middle frame needs to be baked under the baking conditions that the baking temperature is 160 +/-10 ℃ and the baking time is 3-6 minutes, then the glass middle frame needs to be turned over by 180 degrees, the glass middle frame is pad printed twice according to the steps S41-S45, and after the pad printing is completed, the glass middle frame is baked under the baking conditions that the baking temperature is 160 +/-10 ℃ and the baking time is 30 +/-5 minutes.
The pad printing rubber head oil taking area in the example is the outer side wall of the rubber head, the size of the rubber head is smaller than that of the middle frame by a circle, and in the pad printing process, the inner side wall of the middle frame is in ink contact with the outer side wall of the rubber head to finish pad printing. The 180-degree turnover is needed because the rubber head cannot enable the inner side wall to be completely attached with ink once when single-side pad printing is carried out, particularly ink shortage can occur at the lowest part, at the moment, the middle frame is turned over for 180 degrees, and the other side which is not completely attached with ink is subjected to pad printing. And the two sides are subjected to pad printing to ensure that the ink in the whole middle frame area is completely attached without light leakage.
Fig. 14 is a schematic view of a glass middle frame before pad printing provided in embodiment 2 of the present invention, and fig. 15 is an effect view of the glass middle frame after pad printing provided in embodiment 2 of the present invention, wherein an ink area of the glass middle frame is an inner side wall of the middle frame.
The cover plate glass inking method provided by the embodiment of the invention mainly comprises the steps of S1, manufacturing a pad printing rubber head according to the size and the shape of the cover plate glass; s2, manufacturing a pad printing steel plate according to the size and the shape of the cover plate glass and the inking area of the cover plate glass; s3, mounting the pad printing rubber head, the pad printing steel plate, the oil cup filled with ink and the glass cover plate on a pad printing machine; and S4, starting the pad printing machine to ink the glass cover plate. According to the invention, the cover plate glass is inked by using a transfer printing inking mode, the defects of large solvent volatilization pollution and large solvent consumption caused by a spraying scheme are overcome, the cost is greatly reduced, the overall color effect is uniform and consistent, the printing position of the ink can be accurately controlled within +/-0.03 mm, and the thickness of the ink is controlled within +/-0.002 mm.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A method of inking a cover glass, comprising the steps of:
s1, manufacturing a pad printing rubber head according to the size and the shape of the cover plate glass;
s2, manufacturing a pad printing steel plate according to the size, the shape and the inking area of the cover plate glass;
s3, mounting the pad printing rubber head, the pad printing steel plate, the oil cup filled with ink and the glass cover plate on a pad printing machine;
and S4, starting the pad printing machine to ink the glass cover plate.
2. The method for inking a cover glass according to claim 1, wherein the step S1 specifically includes the steps of:
s11, manufacturing a rubber head mould according to the size and the shape of the cover plate glass;
s12, preparing the silica gel and the silicone oil according to a first preset proportion, and uniformly stirring;
s13, standing for a first preset time period, adding an olefin hardener into the mixture of the silica gel and the silicone oil according to a second preset proportion, and fully stirring;
s14, after standing for a second preset time period, pouring a mixture of the silica gel, the silicone oil and the hardening agent into the rubber head mold;
and S15, covering a wood board, standing for a third preset time period, and demolding the rubber head mold to obtain the transfer printing rubber head.
3. A method of inking a cover glass according to claim 2, wherein:
the first preset proportion is that the mass ratio of the silica gel to the silicone oil is 100: 20-60;
the second preset proportion is 1.6% -2.0% of the mass of the mixture of the silica gel and the silica oil;
the first preset time period is 4-6 minutes;
the second preset time period is 5-7 minutes;
the third preset time period is 3-4 hours.
4. The method for inking a cover glass according to claim 1, wherein the step S2 specifically includes the steps of:
s21, manufacturing a film according to the size, the shape and the inking area of the cover plate glass;
s22, cleaning the steel plate with Tianna water or developing water, and pouring the prepared photosensitive paste on the etched surface of the steel plate after dust removal;
s23, placing the steel plate on a sizing machine to rotate, so that the photosensitive paste uniformly covers the etched surface of the steel plate;
s24, placing the steel plate coated with the photosensitive paste into an oven to be baked according to the first baking condition;
s25, after the steel plate is cooled, placing a film at the position of the steel plate needing to be etched, covering the steel plate with glass, and exposing the steel plate for a fourth preset time period, wherein the position of the steel plate needing to be etched is determined according to the shape and the size of the cover plate glass and the inking area;
s26, taking off the glass, and washing the steel plate with developing water for a fifth preset time period;
s27, washing the steel plate with clean water, drying the steel plate, covering the positions of the steel plate, which are not etched, with gummed paper, and then filling sand holes in the positions of the steel plate, which are etched;
s28, pouring the etching solution into the steel plate, etching for a sixth preset time period, and controlling the etching depth within a preset etching depth range;
and S29, washing the etching solution on the surface of the steel plate by water, tearing off the gummed paper, and wiping the photosensitive paste on the surface of the steel plate by using plate washing water to obtain the final steel plate, namely the transfer printing steel plate.
5. The method of inking a cover glass according to claim 4, wherein:
the photosensitive paste is alkadiene or phenolic resin;
the first baking condition is that the baking temperature is 160 +/-10 ℃ and the baking time is 18 +/-2 minutes;
the fourth preset time period is 10-40 seconds;
the fifth preset time period is 30-60 seconds;
the sixth preset time period is 1-5 minutes;
the preset etching depth range is 8-20 microns.
6. The method for inking a cover glass according to claim 1, wherein the step S4 specifically includes the steps of:
s41, attaching the transfer printing steel plate to the lower part of the oil cup; the oil cup moves to the pad printing steel plate etching area; opening the oil cup to enable ink to flow into the etching area of the transfer printing steel plate; closing the oil cup;
s42, moving the oil cup to a non-etching area of the transfer printing steel plate, and extending out the transfer printing steel plate; the pad printing rubber head is pressed down at a first pressing speed, when the pad printing rubber head is away from the pad printing steel plate by a first distance, the pad printing rubber head is pressed down at a second pressing speed, the pad printing rubber head is pressed down to an etching area of the pad printing steel plate to take ink, and the pad printing rubber head is kept for a seventh preset time period;
s43, lifting the pad printing rubber head at a first lifting speed, retracting the pad printing steel plate, and moving the oil cup to an etching area of the pad printing steel plate;
s44, pressing down the pad printing rubber head at a third pressing-down speed, and when the pad printing rubber head is away from the cover glass by a second distance, blowing hot air to the pad printing rubber head by an air blowing device at a first temperature, pressing down at a fourth pressing-down speed simultaneously, so that the ink on the pad printing rubber head is printed on the cover glass of the base, and keeping the pressure for an eighth preset time period;
and S45, lifting the pad printing rubber head at a second lifting speed, and then completing the first pad printing of the cover glass.
7. The method of inking a cover glass according to claim 6, wherein:
the first pressing speed is 1500-2000 r/min;
the first distance is 20-50 mm;
the second pressing speed is 10-40 r/min;
the seventh preset time period is 0.5-1 second;
the first rising speed is 20-200 r/min;
the third descending speed is 1500-2000 r/min;
the second distance is 20-50 mm;
the first temperature is 40-60 ℃;
the fourth pressing speed is 10-40 r/min;
the eighth preset time period is 0.5-2 seconds;
the second rising speed is 20-200 r/min.
8. The method for inking a cover glass according to claim 6, wherein the cover glass is a 3D cover glass, and the pad printing surface of the pad printing head, the contact surface of the pad printing steel plate and the printing surface of the 3D cover glass are the same in size and shape;
the step S4 further includes the steps of:
S46A, repeating the steps S41-S45 to finish secondary pad printing of the 3D cover plate glass;
S47A, baking the 3D cover plate glass under a second baking condition, wherein the second baking condition is that the baking temperature is 160 +/-10 ℃ and the baking time is 30 +/-5 minutes.
9. The method of inking a cover glass according to claim 6, wherein:
the cover plate glass is a glass middle frame; the shape of the pad printing rubber head is as follows: the size of the transfer printing rubber head is smaller than that of the glass middle frame, so that the outer side wall of the transfer printing rubber head can just be in full contact with the inner side wall of the glass middle frame; the size and the shape of the pad printing surface of the pad printing rubber head are the same as those of the pad printing steel plate etching area, so that the convex part of the pad printing rubber head can be just contacted with the steel plate etching area;
the step S4 further includes the steps of:
S46B, repeating the steps S41-S45 to finish secondary pad printing on the cover plate glass;
S47B, baking the glass middle frame under a third baking condition;
S48B, after the glass middle frame is turned over for 180 degrees, performing pad printing on the glass middle frame twice according to the steps S41-S45;
and S49B, baking the glass middle frame under a fourth baking condition.
10. A method of inking a cover glass according to claim 9, wherein: the third baking condition is that the baking temperature is 160 +/-10 ℃, and the baking time is 3-6 minutes; the fourth baking condition is that the baking temperature is 160 +/-10 ℃ and the baking time is 30 +/-5 minutes.
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| CN202010784774.3A CN111923626A (en) | 2020-08-06 | 2020-08-06 | Cover plate glass inking method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561642A (en) * | 2021-07-08 | 2021-10-29 | Tcl华星光电技术有限公司 | Paste pad printing mechanism |
| CN113625832A (en) * | 2021-08-09 | 2021-11-09 | 京东方杰恩特喜科技有限公司 | Manufacturing method of display panel, electronic device and storage medium |
| CN113625832B (en) * | 2021-08-09 | 2024-05-28 | 京东方杰恩特喜科技有限公司 | Display panel manufacturing method, electronic device and storage medium |
-
2020
- 2020-08-06 CN CN202010784774.3A patent/CN111923626A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561642A (en) * | 2021-07-08 | 2021-10-29 | Tcl华星光电技术有限公司 | Paste pad printing mechanism |
| CN113625832A (en) * | 2021-08-09 | 2021-11-09 | 京东方杰恩特喜科技有限公司 | Manufacturing method of display panel, electronic device and storage medium |
| CN113625832B (en) * | 2021-08-09 | 2024-05-28 | 京东方杰恩特喜科技有限公司 | Display panel manufacturing method, electronic device and storage medium |
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