CN110293744B - Printing plate fixing method, printing method and printing equipment - Google Patents
Printing plate fixing method, printing method and printing equipment Download PDFInfo
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- CN110293744B CN110293744B CN201910717033.0A CN201910717033A CN110293744B CN 110293744 B CN110293744 B CN 110293744B CN 201910717033 A CN201910717033 A CN 201910717033A CN 110293744 B CN110293744 B CN 110293744B
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- 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
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- 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
- B41M3/003—Printing processes to produce particular kinds of printed work, e.g. patterns on optical devices, e.g. lens elements; for the production of optical devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
Abstract
The embodiment of the invention discloses a printing plate fixing method, a printing method and printing equipment. The printing plate fixing method is used for fixing a printing plate on a printing roller and comprises the following steps: coating photosensitive glue on the printing roller; overlaying the printing plate on the photosensitive glue; fixing the edge of the printing plate on a preset position of the printing roller by adopting a fastening structure; and curing the photosensitive adhesive. The embodiment of the invention solves the problem that the existing mode of only fixing the printing plate at the edge is easy to generate the position offset after printing, can better prevent the position offset generated after the printing plate is printed for a long time, ensures the printing precision and is beneficial to improving the printing quality and the printing efficiency.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a printing plate fixing method, a printing method and printing equipment.
Background
In the process of manufacturing a liquid crystal display panel, there is a Polyimide (PI) coating process. The PI coating process aims to uniformly coat a layer of PI on an array substrate or a color film substrate of a liquid crystal display panel according to a design area, and further preliminarily form a film for liquid crystal molecule alignment. The quality of alignment affects the quality of the image of the lcd panel.
Fig. 1 is a schematic structural diagram of a prior art printing device, and referring to fig. 1, the prior art printing device for coating PI generally comprises a nozzle 11, a scraper 12, a printing roller 14 and an anilox roller 13, wherein the printing roller 14 fixes a printing plate 10, PI liquid is coated on the anilox roller 13 through the cooperation of the nozzle 11 and the scraper 12, and the anilox roller 13 is in contact with and presses the printing plate 10 in a color spreading process, so that PI is also transferred to the printing plate 10. Meanwhile, the printing plate 10 is provided with a raised printing area corresponding to each printing area on the array substrate or the mother plate of the color film substrate, and the PI liquid can be transferred to the preset areas of each array substrate and the color film substrate by the rotation of the printing roller.
However, the existing printing apparatus only fixes the edge of the printing plate on the printing roller when fixing the printing plate. And the printing plate is made of flexible resin materials, so that after long-term board hanging printing, the printing plate can deviate in position, so that deviation exists in a printing area, and the produced alignment films on the array substrate and the color film substrate deviate. And the board is hung again and the position of adjustment printing plate, although can guarantee printing quality, but also influenced the efficiency of printing greatly to still can produce the problem of printing skew.
Disclosure of Invention
The invention provides a printing plate fixing method, a printing method and printing equipment, which are used for avoiding the displacement of a printing plate in the printing process and ensuring the accuracy of a printing area.
In a first aspect, an embodiment of the present invention provides a printing plate fixing method for fixing a printing plate on a printing roller, including:
coating photosensitive glue on the printing roller;
overlaying the printing plate on the photosensitive glue;
fixing the edge of the printing plate on a preset position of the printing roller by adopting a fastening structure;
and curing the photosensitive adhesive.
Further, the fastening structure comprises a fastening strip and screws, a plurality of screw holes are distributed on the fastening strip, and the printing plate comprises a first edge and a second edge which are opposite and parallel to the central axis of the printing roller; fixing the edge of the printing plate on the preset position of the printing roller by adopting a fastening structure, comprising:
placing the fastening strips on the first and second edges of the printing plate, respectively;
and the screw penetrates through the screw hole and the printing plate and is fixed on the preset position of the printing roller, and the fastening strip and the printing roller are clamped and fixed on the first edge and the second edge of the printing plate.
Furthermore, the fastening strip comprises a plurality of sub fastening strips, and a plurality of screw holes are distributed on the sub fastening strips; placing the fastening strips on the first and second edges of the printing plate, respectively, comprising:
placing the sub-fastening strips on the first and second edges of the printing plate, respectively, and the sub-fastening strips on the same edge extend along the same straight line in sequence;
wherein the sub-fastening strips on the first edge correspond one-to-one with the sub-fastening strips on the second edge.
Further, the printing plate comprises a plurality of printing areas arranged in an array, the plurality of printing areas arranged in the array comprise a plurality of printing area columns, and the vertical projection of each sub-fastening strip in the row direction covers the vertical projection of an integral number of printing area columns in the row direction.
Further, the number of the sub-fastening strips positioned on the same side is 2-3.
Further, after fixing the edge of the printing plate on the preset position of the printing roller by adopting a fastening structure, the method further comprises the following steps:
testing the printing position of the printing plate;
when the printing position of the printing plate deviates, adjusting the fastening structure to enable the fastening structure to drive the printing plate to a target printing position of the printing roller;
and fixing the edge of the printing plate on the target printing position by using the fastening structure.
Further, the fastening structure comprises a fastening strip and screws, the fastening strip comprises a plurality of sub-fastening strips, and a plurality of screw holes are distributed on the sub-fastening strips; the sub-fastening strips on the first edge correspond to the sub-fastening strips on the second edge one to one, the printing plate comprises a plurality of locking adjustment partitions, and two opposite sub-fastening strips correspond to one locking adjustment partition;
when the printing position of the printing plate deviates, the fastening structure is adjusted to drive the printing plate to the target printing position of the printing roller, and the method comprises the following steps:
when the printing position of the printing plate has deviation, determining the locking adjustment subarea corresponding to the deviation;
and adjusting the sub fastening strips corresponding to the locking adjustment subareas to enable the sub fastening strips to drive the printing plate of the locking adjustment subareas to the target printing position.
In a second aspect, the embodiment of the present invention further provides a printing method for printing an alignment film of a liquid crystal panel, including the printing plate fixing method according to any one of the first aspect.
Further, still include:
printing alignment films on the array substrate or the color film substrate in batch by using the printing plate;
and after the batch printing is finished, heating the photosensitive adhesive and removing the fastening structure, and taking down the printing plate from the printing roller.
In a third aspect, an embodiment of the present invention further provides a printing apparatus, which prints an alignment film of a liquid crystal panel by using the printing method according to the second aspect, where the printing apparatus includes a table, an anilox roller, a printing roller, a curing light source, and a heating device;
the machine table is used for fixing a printing substrate, the anilox roller is used for transferring alignment liquid to a printing plate of the printing roller, and the printing roller is used for impressing the alignment liquid of the printing plate to the surface of the printing substrate;
the curing light source irradiates the printing roller, and the heating device is arranged inside the printing roller to heat the printing roller.
According to the printing plate fixing method, the printing method and the printing equipment provided by the embodiment of the invention, the printing roller is coated with the photosensitive adhesive, then the printing plate is covered on the photosensitive adhesive, then the edge of the printing plate is fixed on the preset position of the printing roller by using the fastening structure, finally the photosensitive adhesive is cured by ultraviolet light, the edge of the printing plate can be fixed by using the fastening structure, the whole printing plate is bonded on the printing roller by using the photosensitive adhesive, the whole fixing of the printing plate is realized, the offset of the printing plate in the printing process is well limited, and the problem that the position offset is easily generated after the printing in the conventional mode of only fixing the printing plate at the edge is solved. The embodiment of the invention can better prevent the position deviation of the printing plate after long-term printing, ensure the printing precision and contribute to improving the printing quality and the printing efficiency.
Drawings
FIG. 1 is a schematic view of a prior art printing apparatus;
FIG. 2 is a flow chart of a method of fixing a printing plate according to an embodiment of the present invention;
FIG. 3 is a schematic view showing a structure of a printing plate fixed to a printing roll in the printing plate fixing method shown in FIG. 2;
FIG. 4 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention;
FIG. 5 is a flow chart of yet another method of fixing a printing plate according to an embodiment of the present invention;
FIG. 6 is a schematic view showing a structure in which a printing plate is fixed to a printing roller in the printing plate fixing method shown in FIG. 5;
FIG. 7 is a schematic view of a printing plate according to another embodiment of the present invention mounted on a printing roll;
FIG. 8 is a flow chart of another printing method provided by embodiments of the present invention;
fig. 9 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention.
The method comprises the following steps of 1-printing roller center shaft, 10-printing plate, 101-first edge, 102-second edge, 11-nozzle, 12-scraper, 13-anilox roller, 14-printing roller, 15-adjusting roller, 151-hook, 16-machine table, 17-curing light source, 18-heating device, 100-printing area, 110-printing area column, 21-fastening strip, 211-sub-fastening strip, 210-screw hole, 22-screw, 200-locking adjusting partition and 30-printing substrate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 2 is a flow chart of a printing plate fixing method according to an embodiment of the present invention, fig. 3 is a schematic structural diagram of a printing plate fixed on a printing roller in the printing plate fixing method shown in fig. 2, and referring to fig. 2-3, the printing plate fixing method is used for fixing a printing plate 10 on a printing roller 14, and specifically includes:
and S110, coating photosensitive adhesive on the printing roller.
The curing principle of the photosensitive adhesive is that a photoinitiator (or photosensitizer) in a photosensitive adhesive curing material generates active free radicals or cations after absorbing ultraviolet light under the irradiation of ultraviolet light, and initiates monomer polymerization, crosslinking and grafting chemical reaction, so that the adhesive is converted from a liquid state to a solid state within several seconds. It should be noted here that the printing roller 14 is not coated with all of the photosensitive paste, but is coated only in the area where the printing roller 14 holds the printing plate 10 to bond the printing plate 10 and the printing roller 14. Moreover, the area of the printing roller 14 for fixing the printing plate 10 does not need to be completely coated with the photosensitive adhesive, and the photosensitive adhesive can be coated in a glue line manner under the condition of ensuring the bonding effect, and the trend of the glue line can be adjusted by a person skilled in the art according to the actual bonding effect.
And S120, covering the printing plate on the photosensitive glue.
The printing plate 10 is generally made of a flexible resin material, and the front surface of the printing plate 10 is distributed with a plurality of raised printing areas 100 for printing the PI liquid in the corresponding printing areas of the substrate, while the back surface of the printing plate is covered with a photosensitive glue.
S130, fixing the edge of the printing plate on a preset position of a printing roller by adopting a fastening structure;
since the printing area 100 is distributed in the middle area of the printing plate 10, when the printing plate is fixed to the printing roller by the fastening structure, only the edge position can be fixed, and the displacement of the entire printing plate is limited by the fixation of the edge position. Meanwhile, the edge fixing printing plate 10 can prevent the substrate from being damaged by the fastening structure in the printing process.
And S140, curing the photosensitive adhesive.
The process of curing the photosensitive adhesive only needs to start the ultraviolet lamp, and the liquid photosensitive adhesive is rapidly cured into a film shape within a period of several seconds to dozens of seconds by utilizing the ultraviolet light of the ultraviolet lamp. At this time, the film-shaped photosensitive adhesive fixes the printing plate and the printing roller, and the printing plate can be prevented from being displaced during printing.
According to the printing plate fixing method provided by the embodiment of the invention, the printing plate is coated on the printing roller, then the printing plate is covered on the photosensitive adhesive, then the edge of the printing plate is fixed on the preset position of the printing roller by using the fastening structure, finally the photosensitive adhesive is cured by ultraviolet light, the edge of the printing plate can be fixed by using the fastening structure, and the whole printing plate is bonded on the printing roller by using the photosensitive adhesive, so that the whole fixing of the printing plate is realized, the offset of the printing plate in the printing process is well limited, and the problem that the position offset is easily generated after the printing in the conventional mode of only fixing the printing plate at the edge is solved. The method for fixing the printing plate can better prevent the printing plate from shifting after long-term printing, ensure the printing precision and contribute to improving the printing quality and the printing efficiency. It should be noted that, compared with a mechanical fixing mode, the photosensitive adhesive is used for fixing the printing plate, so that the area for bonding and fixing is large and uniform, the fixing performance is strong, each area of the printing plate can be bonded, the problem of position deviation can be avoided even in long-term printing, and the phenomenon that the printing and fixing are caused by the influence of the outside (such as a machine table, water and electricity) can not occur. In addition, the photosensitive adhesive is uniformly bonded and fixed, so that the printing uniformity can be ensured, and the damage to the printing area of the printing plate and the influence on the printing effect caused by a mechanical fixing structure can be avoided.
In the above embodiment, preferably, the fastening structure employs a combination of a fastening strip and a screw. Referring to fig. 3, wherein the fastening structure includes a fastening strip 21 and screws 22, a plurality of screw holes 210 are distributed on the fastening strip 21, and the printing plate 10 includes opposite first and second sides 101 and 102 parallel to the central axis 1 of the printing roller. In the above embodiment, S130, fixing the edge of the printing plate at the preset position of the printing roller by using a fastening structure specifically includes:
s131, respectively placing the fastening strips 21 on the first edge 101 and the second edge 102 of the printing plate 10;
s132, the screw 22 is inserted through the screw hole 210 and the printing plate 10 and fixed on the preset position of the printing roller, and the fastening strip 21 clamps and fixes the first edge 101 and the second edge 102 of the printing plate with the printing roller.
Wherein, the printing roller is provided with screw holes corresponding to the printing positions of the printing plate 10, the screw 22 is inserted into the screw hole on the printing roller after passing through the screw hole 210 on the fastening strip 21 and the printing plate 10, and at this time, the fastening strip 21 and the printing roller clamp and fix the printing plate 10 through the screw. And, the screw holes on the printing roll preliminarily define the preliminary position of the printing plate on the printing roll. The screw holes 210 on the fastening strip 21 can be uniformly distributed, and the screws 22 can provide a more uniform fastening force when fixing the edge of the printing plate 10 through the fastening strip 21, thereby preventing the local area of the edge of the printing plate 10 from being deviated.
In order to avoid that the printing plate still has printing deviation with the corresponding substrate when the printing plate is fixed on the printing roller through the fastening structure, namely, the printing area on the printing plate has deviation with the printing area on the substrate. Further, after fixing the edge of the printing plate on the preset position of the printing roller by adopting a fastening structure, the method further comprises the following steps:
s133, testing the printing position of the printing plate;
the testing process is essentially a process of printing the printing plate on the substrate, and the edge of the printing plate is fixed by the fastening structure, so that the fixation of the printing plate in the printing process can be basically ensured. At the moment, the printing roller is driven to rotate, PI liquid on the printing plate can be transferred to a printing area of the substrate, and whether the printing position of the printing plate has deviation or not and the deviation can be determined by measuring the position of the PI liquid on the substrate.
And S134, when the printing position of the printing plate deviates, adjusting the fastening structure to enable the fastening structure to drive the printing plate to the target printing position of the printing roller.
The deviations occurring at this point are relatively small, since the printing plate has already undergone a relatively accurate alignment process when being fixed to the printing roller with the fastening arrangement. In the adjusting process, the fastening structure is only required to be properly moved, and the fastening structure drives the printing plate to move so as to compensate the deviation. Fig. 4 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention, and referring to fig. 4, the printing apparatus includes an adjusting roller 15, a hook 151 is disposed on the adjusting roller 15 corresponding to a screw hole 210 on a fastening strip 21, and when the fastening strip 21 is adjusted, the hook 151 on the adjusting roller 15 can be hung on the screw hole 210 that needs to be adjusted in position. The fastening strips 21 can be quantitatively adjusted by rotating the adjusting rollers 15 with a torque wrench, so that the fastening strips 21 pull the printing plate 10 with a quantitative pulling force, thereby achieving the adjustment of the position of the printing plate 10.
In addition, the adjustment here does not require the printing plate to be removed from the printing roller, but only adjusts some positions of the error first edge or second edge, so that the printing plate is not consumed, the elastic failure of the printing plate can be avoided, and the printing precision can be ensured.
And S135, fixing the edge of the printing plate on the target printing position by adopting a fastening structure.
After the fastening structure is adjusted to move the printing plate to the target printing position, the printing plate can be fixed by the fastening structure again to ensure the fixation of the printing plate and the printing roller.
Further, an embodiment of the present invention further provides a printing plate fixing method, fig. 5 is a flowchart of another printing plate fixing method provided by an embodiment of the present invention, fig. 6 is a schematic diagram of a structure of a printing plate fixed on a printing roller in the printing plate fixing method shown in fig. 5, referring to fig. 5 and fig. 6, wherein the fastening structure includes a fastening strip 21 and a screw 22, the fastening strip 21 includes a plurality of sub-fastening strips 211, a plurality of screw holes 210 are distributed on the sub-fastening strips 211, and the printing plate 10 includes a first side 101 and a second side 102 opposite to each other and parallel to the central axis 1 of the printing roller. The printing plate fixing method includes:
s210, coating photosensitive adhesive on a printing roller;
s220, covering the printing plate on the photosensitive adhesive;
s230, respectively placing a plurality of sub-fastening strips on the first edge and the second edge of the printing plate, wherein the sub-fastening strips on the same edge sequentially extend along the same straight line;
the fact that the sub-fastening strips 211 located on the same side extend along the same straight line in sequence means that at least two sub-fastening strips 211 are distributed on the first side 101 and the second side 102 respectively, and the sub-fastening strips 211 can fasten the sub-areas on each side by fixing the sub-areas of the first side 101 and the second side 102, so that the problem of insufficient local fastening force is avoided. And, preferably, the number of the sub-fastening strips positioned at the same side may be set to 2 to 3. At this time, the number of the sub-fastening strips is small, on one hand, local fastening can be increased, and meanwhile, the installation process of the sub-fastening strips can be properly reduced, and the complexity of the fixing step is avoided.
And S240, passing a screw through the screw hole and the printing plate and fixing the screw on a preset position of the printing roller, wherein the sub fastening strip and the printing roller clamp and fix the first edge and the second edge of the printing plate.
And S250, curing the photosensitive adhesive.
Fig. 7 is a schematic view of a structure for fixing a printing plate on a printing roller according to another embodiment of the present invention, and referring to fig. 7, alternatively, when fixing the printing plate using the sub-fastening strips 211, the sub-fastening strips 211 on the first side 101 may be arranged to correspond to the sub-fastening strips 211 on the second side 102 one by one.
And, with continued reference to the above figures, two sub-fastening strips 211 opposing each other on the printing plate form a locking adjustment partition 200. The printing plate includes a plurality of printing areas 100 arranged in an array, which includes a plurality of printing area columns 110. Optionally, the perpendicular projection of each sub-fastening strip 211 in the row direction covers an integer number of the perpendicular projections of the printed area columns 110 in the row direction. And, after the screw 22 is passed through the screw hole 210 and the printing plate 10 and fixed on the preset position of the printing roller, the sub fastening strip 211 clamps and fixes the first side 101 and the second side 102 of the printing plate 10 with the printing roller, further comprising:
s241, when the printing position of the printing plate 10 deviates, determining a locking adjustment subarea 200 corresponding to the deviation;
and S242, adjusting the sub fastening strips 211 corresponding to the locking adjustment subareas 200, so that the sub fastening strips 211 drive the printing plate 10 of the locking adjustment subareas 200 to a target printing position.
When the sub fastening strips 211 are adjusted, the adjusting roller 15 shown in fig. 4 may also be used, and after the locking adjusting partition 200 is determined, the hooks 151 on the adjusting roller 15 may be hung on the screw holes 210 of the sub fastening strips 211 corresponding to the locking adjusting partition 200. The printing plate 10 in the lock adjustment section 200 is moved by the sub-fastening strips 211, thereby finely adjusting a partial area of the printing plate 10. Further, the number and positions of the screw holes 210 formed in the sub-fastening strip 211 are preferably distributed in the middle and both ends of the sub-fastening strip, and at this time, when the sub-fastening strip 211 is adjusted by the hooks 151 of the adjusting roller 15, the sub-fastening strip 211 can be further adjusted by regions. For example, if the determined locking adjustment section 200 has a deviation from the upper right corner, only the screw hole 210 at the right end of the first edge 101 may be adjusted specifically.
The embodiment of the invention also provides a printing method for printing the alignment film of the liquid crystal display panel, and the printing method comprises any one of the printing plate fixing methods provided in the above embodiments. In addition, since the printing method employs the printing plate fixing method as described above, the same technical effects as those of the printing plate fixing method described above can be achieved.
Further, an embodiment of the present invention further provides a printing method, and fig. 8 is a flowchart of another printing method provided in an embodiment of the present invention, and with reference to fig. 1 and 8, the printing method includes:
s310, coating photosensitive glue on the printing roller;
s320, covering the printing plate on the photosensitive adhesive;
s330, fixing the edge of the printing plate on a preset position of the printing roller by adopting a fastening structure;
s340, curing the photosensitive adhesive;
the above steps can fix the printing plate on the printing roller to prepare for printing. At this time, the printing plate is fixed at a predetermined position of the printing roller, and a printing area thereon corresponds to a printing area on the substrate to be printed.
S350, printing alignment films on the array substrate or the color film substrate in batch by using a printing plate;
the process comprises the sequential transfer printing of PI liquid from an anilox roller to a printing roller to an array substrate or a color film substrate, and the PI liquid is printed on the array substrate or the color film substrate, so that the alignment film is formed.
And S360, after the batch printing is finished, heating the photosensitive adhesive and removing the fastening structure, and taking down the printing plate from the printing roller.
The process of heating can be realized through setting up heating device in lithography apparatus, specifically can set up the heating wire in the inside of printing roller, and the photosensitive glue of solidification on the heating wire heating printing roller to reduce the viscidity of photosensitive glue, so that tear off the photosensitive glue. In addition, the process can be used as a step of replacing the printing plate, and the printing plate is taken off from the printing roller so as to replace other types of printing plates.
Corresponding to the printing method shown in fig. 8, an embodiment of the present invention further provides a printing apparatus, which can print the liquid crystal alignment film by using the printing method shown in fig. 8. Fig. 9 is a schematic structural diagram of a printing apparatus provided in an embodiment of the present invention, and referring to fig. 9, the printing apparatus includes a machine table 16, an anilox roller 13, a printing roller 14, a curing light source 17, and a heating device 18; the machine table 16 is used for fixing the printing substrate 30, the anilox roller 13 is used for transferring the alignment liquid to the printing plate 10 of the printing roller 14, and the printing roller 14 is used for imprinting the alignment liquid of the printing plate 10 to the surface of the printing substrate 30; the curing light source 17 irradiates the printing roller 14, and the heating device 18 is provided inside the printing roller 14 to heat the printing roller 14.
In the fixing of the printing plate 10, the curing light source 17 is used to cure the photosensitive paste coated on the printing roller 14, so that the printing plate 10 is fixed on the printing roller 14. The light emitting wavelength of the curing light source 17 should correspond to the curing wavelength of the photosensitive glue. For example, when the light-curable adhesive is an ultraviolet light-curable adhesive, the curing light source 17 may be an ultraviolet lamp having a light-emitting wavelength of 365 nm. A heating device 18 is provided inside the printing roller 14 to release the printing plate 10, and the heating device 18 can reduce the adhesion of the photosensitive paste cured on the printing roller 14, thereby facilitating the removal of the printing plate 10. The heating device 18 may be a heating wire disposed inside the printing roller 14 or an electric heating bulb having a heating wire structure, etc., and those skilled in the art can design the heating device according to actual needs without limitation.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in more detail by the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the spirit of the present invention.
Claims (8)
1. A printing plate fixing method for fixing a printing plate on a printing roller, comprising:
coating photosensitive glue on the printing roller;
overlaying the printing plate on the photosensitive glue;
fixing the edge of the printing plate on a preset position of the printing roller by adopting a fastening structure;
curing the photosensitive adhesive;
wherein after the edge of the printing plate is fixed on the preset position of the printing roller by adopting a fastening structure, the method further comprises the following steps:
testing the printing position of the printing plate;
when the printing position of the printing plate deviates, adjusting the fastening structure to enable the fastening structure to drive the printing plate to a target printing position of the printing roller;
fixing the edge of the printing plate on the target printing position by using the fastening structure;
wherein the printing plate comprises opposing first and second edges parallel to the central axis of the printing roller; the fastening structure comprises a fastening strip and screws, the fastening strip comprises a plurality of sub-fastening strips, a plurality of screw holes are distributed on the sub-fastening strips, and the fastening strips are respectively arranged on the first edge and the second edge of the printing plate; the sub-fastening strips on the first edge correspond to the sub-fastening strips on the second edge one to one, the printing plate comprises a plurality of locking adjustment partitions, and two opposite sub-fastening strips correspond to one locking adjustment partition;
when the printing position of the printing plate deviates, the fastening structure is adjusted to drive the printing plate to the target printing position of the printing roller, and the method comprises the following steps:
when the printing position of the printing plate has deviation, determining the locking adjustment subarea corresponding to the deviation;
and adjusting the sub fastening strips corresponding to the locking adjustment subareas to enable the sub fastening strips to drive the printing plate of the locking adjustment subareas to the target printing position.
2. The printing plate fixing method according to claim 1, wherein fixing the edge of the printing plate at a predetermined position of the printing roller using a fastening structure comprises:
and the screw penetrates through the screw hole and the printing plate and is fixed on the preset position of the printing roller, and the fastening strip and the printing roller are clamped and fixed on the first edge and the second edge of the printing plate.
3. The printing plate fixing method according to claim 2, wherein the fastening strip includes a plurality of sub-fastening strips on which a plurality of screw holes are distributed; placing the fastening strips on the first and second edges of the printing plate, respectively, comprising:
the sub-fastening strips are placed on the first and second edges of the printing plate, respectively, and the sub-fastening strips on the same edge extend along the same straight line in sequence.
4. The printing plate fixing method according to claim 3, wherein the printing plate includes a plurality of printing areas arranged in an array, the plurality of printing areas arranged in an array includes a plurality of printing area columns, and a vertical projection of each of the sub-fastening strips in the row direction covers a vertical projection of an integral number of the printing area columns in the row direction.
5. A printing plate fixing method according to claim 3, wherein the number of the sub-fastening strips located on the same side is 2 to 3.
6. A printing method for printing an alignment film of a liquid crystal panel, comprising the printing plate fixing method according to any one of claims 1 to 5.
7. The printing method of claim 6, further comprising:
printing alignment films on the array substrate or the color film substrate in batch by using the printing plate;
and after the batch printing is finished, heating the photosensitive adhesive and removing the fastening structure, and taking down the printing plate from the printing roller.
8. A printing device, characterized in that the liquid crystal panel alignment film is printed by the printing method according to claim 6, and the printing device comprises a machine table, an anilox roller, a printing roller, a curing light source and a heating device;
the machine table is used for fixing a printing substrate, the anilox roller is used for transferring alignment liquid to a printing plate of the printing roller, and the printing roller is used for impressing the alignment liquid of the printing plate to the surface of the printing substrate;
the curing light source irradiates the printing roller, and the heating device is arranged inside the printing roller to heat the printing roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717033.0A CN110293744B (en) | 2019-08-05 | 2019-08-05 | Printing plate fixing method, printing method and printing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717033.0A CN110293744B (en) | 2019-08-05 | 2019-08-05 | Printing plate fixing method, printing method and printing equipment |
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| CN110293744A CN110293744A (en) | 2019-10-01 |
| CN110293744B true CN110293744B (en) | 2021-12-07 |
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| CN201910717033.0A Active CN110293744B (en) | 2019-08-05 | 2019-08-05 | Printing plate fixing method, printing method and printing equipment |
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| US8141483B2 (en) * | 2008-08-25 | 2012-03-27 | Lg. Display Co. Ltd. | Printing plate and method of printing an alignment film using the same |
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