CN113103771A - Braille printing equipment and preparation method of Braille printed matter - Google Patents
Braille printing equipment and preparation method of Braille printed matter Download PDFInfo
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- CN113103771A CN113103771A CN202110463931.5A CN202110463931A CN113103771A CN 113103771 A CN113103771 A CN 113103771A CN 202110463931 A CN202110463931 A CN 202110463931A CN 113103771 A CN113103771 A CN 113103771A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/32—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0085—Using suction for maintaining printing material flat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/145—Arrangement thereof
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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
- B41M3/16—Braille printing
Abstract
The invention discloses a Braille printing device and a preparation method of Braille printed matters, comprising a paper feeding unit, a conveying device, a visual positioning system, a printing device, a curing device and a paper collecting unit; the printing device consists of at least one printing nozzle and a printing nozzle control system; the printing nozzle moves back and forth along the X direction of the Braille printing equipment in a straight line way; the printing nozzle control system can control the number of ink jet holes and the ink output of all the printing nozzles. The Braille printing equipment and the preparation method of the Braille printed matter can realize the printing preparation of Braille dots and images with large width and high height by feeding paper once, realize the preparation of Braille images with different tactility such as frosting, textures and the like, have small quantity of printing spray heads, low cost, high printing speed and high efficiency, have large height-diameter ratio of the printed Braille dots, and have smooth and mellow Braille dots.
Description
Technical Field
The invention relates to the field of Braille printing, in particular to Braille printing equipment and a preparation method of Braille printed matters.
Background
The traditional braille printing generally adopts a mechanical striker imprinter, and a striker impacts a kraft paper with specific strength to form raised braille points on the paper surface. The mode has high requirement on paper, kraft paper with enough high strength is required, the price of the paper is higher, braille points are easy to grind flat, and a pattern image can hardly be manufactured by a mechanical marking mode, so that the application of braille is limited.
CN101549592A discloses a printing device for preparing braille by using a dispensing device, which prints braille dots line by using the transverse movement of a piezoelectric glue spraying valve, and can realize the printing of double rows of braille dots by one reciprocating, wherein the volume of each braille dot sprayed is 0.3-1 mu L, and the dot height is more than 0.3 mm. The Braille printing method can print Braille on common paper. However, this method is only suitable for printing braille, and cannot produce graphic images and other image effects, and the printing speed is slow, and industrial production equipment cannot be formed.
CN105818545A discloses a printing system and method of robot 3D bump braille, utilizes omnidirectional wheel robot to drive 3D and beats printer head and move, can print figure, braille, characters etc. realizes that chinese character and braille print simultaneously, realizes the comparison of bright blind. The 3D printing head used in the method is still a glue dispensing needle, the glue discharging amount is large, the precision is poor, only thick lines can be printed, and high-precision braille printing cannot be realized due to the poor positioning precision of the omnidirectional wheel robot.
CN202071517U discloses an apparatus for printing braille by ink jet, which utilizes a piezoelectric nozzle to spray ink drops onto a medium to form braille dots by solidification. The printing device comprises at least two printing modules, and each printing module is lifted layer by layer and prints layer by layer until the required height of the Braille point is formed. The device has high printing speed and regular Braille dot outline. However, because the ink output of the piezoelectric nozzle is limited, the printing height of each layer is limited, and if the high printing is realized, a plurality of printing modules are needed; if wide-width printing is to be realized, each printing module needs to be spliced by a plurality of spray heads, and the price of the piezoelectric spray heads is high, so that the cost of the equipment is extremely high for realizing high-speed wide-width braille printing.
CN101665024A discloses an inkjet printing apparatus and method applicable to braille, raised printing, wherein the height of the inkjet print head can be moved to achieve high printing by passing the medium through a single printing and curing station multiple times or placing several printing and curing stations in succession in sequence. According to the method, the single-row spray head needs the medium to pass through the printing area and the curing area for multiple times, paper deformation can be caused by printing and curing each time and feeding and discharging paper, especially secondary printing can not be carried out on low-gram-weight paper, the requirement on the base material is high, and the printing efficiency is greatly reduced by feeding and discharging paper again. If a plurality of print-cured areas are placed in succession, the cost rises greatly.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a braille printing apparatus, which can print braille dots and images in a large format and at a high height by one-time paper feeding, and which has a small number of printing nozzles, a low cost, a high printing speed, and a high efficiency.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a Braille printing apparatus includes a paper feeding unit, a printing device, a conveying device, a vision positioning system, a curing device, and a paper delivery unit.
The conveying device conveys the printing stock to the paper receiving unit through the printing device and the curing device along the Y direction of the Braille printing equipment; the printing device can limit the printing area of the Braille printing equipment and consists of at least one printing nozzle and a printing nozzle control system; the printing nozzle moves back and forth along the X direction of the Braille printing equipment in a straight line way; the printing nozzle control system can control the number of ink jet holes and the ink output of all printing nozzles; the printing spray heads are installed in a splicing mode, and the length of the printing spray heads is larger than that of the printing stock in the Y direction.
The curing device is UV solidification, the curing device contains 3 curing light sources, and curing light source 051 and curing light source 052 are connected with printing the shower nozzle respectively, and the position is respectively in the both sides of printing the shower nozzle, and is parallel with printing the shower nozzle, apart from printing shower nozzle 10 ~ 20cm, and the solidification light intensity is 1 ~ 5W/cm2(ii) a Solidified light source 053 for printing device and delivery sheetThe elements span above the conveyer and the curing light intensity is 10-30W/cm2。
The lengths of the curing light source 051 and the curing light source 052 are the same and are greater than the length of the printing spray head; the length of the curing light source 053 is greater than the length of the printing stock in the X direction.
The height between the curing light source 051 and the height between the curing light source 052 and the printed material are the same and are 1-5 cm; the height of the curing light source 053 from the printing stock is 5-10 cm.
The printing nozzle is provided with a light source protection device to ensure that light emitted by the curing device can not irradiate the printing nozzle.
The conveying device is provided with an air suction hole which can adsorb the printing stock to the conveying device; the density of the air suction holes in the printing area on the conveying device is larger than that of other areas, the maximum air suction amount of the printing area is guaranteed, printing stock can be well adsorbed, the printing spray head is prevented from being scratched by the printing stock, meanwhile, the heights of the curing light sources 051 and 052 can be reduced, and the curing efficiency is improved.
The visual positioning system is positioned above the printing device, can scan the whole printing area, accurately adjusts the printing position, and has to have an angular line when accurate positioning overprinting is needed.
Another object of the present invention is to provide a method of preparing a braille print using the above braille printing apparatus. When the first layer is printed, the curing light source 051 and the curing light source 052 are sequentially switched on and off along with the moving direction of the printing nozzle, the printing nozzle control system controls a small number of spray holes of the printing nozzle to discharge ink, and the ink prints a thin frosted substrate on a printing stock; when the middle layer is printed, the curing light source 051 and the curing light source 052 are sequentially switched on and off along with the moving direction of the printing nozzle, all the jet holes of the printing nozzle are completely discharged with ink, the ink discharge amount is adjusted to be maximum, and images or characters are quickly piled up; when the last layer is printed, all the spray holes of the printing spray head are completely sprayed with ink, the ink discharge amount is adjusted to be minimum, the curing light source 051 and the curing light source 052 are closed, the curing light source 053 is opened, enough leveling time is ensured, the surface of the Braille point is smooth and mellow, and the height-diameter ratio of the printed Braille point is large.
The preparation method of the braille printed matter comprises the following steps:
1) and (3) transmission: conveying the printing stock to a conveying device through a paper feeding unit, and conveying the printing stock to a printing area through the conveying device;
2) visual positioning and file transmission: in the printing area, the visual positioning system automatically scans the position of a printing stock, and adjusts the position of a file to be printed according to the position of the printing stock so as to make the position of the printed file consistent with that of the printing stock;
3) printing and pre-curing: printing braille on a printing stock according to the content of the file, and pre-curing and molding the printed ink by using a curing light source 051 and a curing light source 052;
4) curing and drying: after printing, the conveying device conveys the printing stock to a curing light source 053 for complete curing and drying;
5) and recovering the printing stock through the paper collecting unit.
The ink is photocuring ink, and the photocuring ink is a low-energy surface after being cured, and the surface energy is 30-50 mN/m.
The prepolymer of the photo-curing ink is at least one of an organic silicon acrylate prepolymer, a fluorocarbon prepolymer or a fluorosilicone prepolymer.
The printing height of the braille points of the braille printed matter is 0.1-0.5 mm, and the height-diameter ratio of the braille points is 0.6-0.8.
Compared with the prior art, the invention has the following advantages:
1) according to the Braille printing equipment, the printing nozzle is used for printing back and forth in the X direction of the Braille printing equipment to realize quick accumulation of Braille characters, multiple times of paper feeding and paper discharging superposition printing are not needed, and the printing efficiency is high;
2) the braille printing equipment can realize large-format and high-height printing only by one row of printing nozzles, and has simple structure and low cost;
3) the printing nozzle of the Braille printing equipment only moves in the X direction of the Braille printing equipment, so that the fluctuation of the Braille printing equipment in the Y direction can be avoided, and the positioning precision is high;
4) the invention controls by layered ink discharging and two curing modes, the forming utilization rate of ink drops is high, the ink consumption is less, high adhesive force on different materials can be realized, the surface of the printed braille dot is smooth and mellow, and the touch feeling is good.
5) The invention adopts the light-cured ink with low surface energy, the ink is not easy to diffuse when the layer-by-layer printing is carried out, the height-diameter ratio of the braille dots is large, the identification of the small-dot braille can be realized, and the paper and the ink are saved.
Drawings
FIG. 1 is a schematic view of a Braille printing apparatus of the present invention;
FIG. 2 is a schematic view of a printing apparatus and curing apparatus of the present invention;
wherein: 01-a paper feeding unit; 02-a printing device; 03-a transfer device; 04-a visual positioning system; 05-a curing device; 06-paper collecting unit; 021-print head; 022-print head control system; 051-curing the light source; 052-curing light source; 053-curing light source; 010-Braille printing apparatus; 011-printing stock.
Detailed Description
The invention is further described below with reference to the figures and examples.
The Braille printing equipment, as shown in figures 1-2, comprises a paper feeding unit 01, a printing device 02, a conveying device 03, a visual positioning system 04, a curing device 05 and a paper collecting unit 06. The conveying device 03 conveys the printing stocks 011 to the paper delivery unit 06 through the printing device 02 and the curing device 05 along the direction of the Braille printing device 010Y; the printing device 02, which is capable of defining the printing zone of the braille printing apparatus 010, is composed of at least one printing nozzle 021 and a printing nozzle control system 022; the printing nozzle 021 moves back and forth along the direction of the Braille printing device 010X in a straight line; the printing nozzle control system 022 can control the number of ink jet holes and the ink output amount of all the printing nozzles 021; the printing spray heads 021 are installed in a splicing mode, and the length of the printing spray heads 021 is larger than that of the printing stock 011 in the Y direction.
In this embodiment, 5 printing nozzles 021 are arranged in a row in a staggered manner, the printing nozzles 021 are connected to a printing nozzle control system 022, and the printing nozzle control system 022 can control the inkjet orifices of the 5 printing nozzles 021Number and ink output. The curing device 05 is a UV curing device, and the curing device 05 is composed of a curing light source 051, a curing light source 052 and a curing light source 053. The curing light source 051 and the curing light source 052 are respectively arranged at two sides of the printing spray nozzle 021, have the same length, are positioned in parallel with the printing spray nozzle 021, have the length slightly larger than the length of the printing spray nozzle 021, have the distance of 15cm from the printing spray nozzle 021 and have the curing light intensity of 3W/cm2(ii) a A curing light source 053 arranged between the printing device 02 and the delivery unit 06 and extending above the conveyer 03 and having a length greater than 011X direction length of the printing stock and a curing light intensity of 18W/cm2(ii) a The height between the curing light source 051 and the curing light source 052 and the printed material 011 is 1.5cm, and the height between the curing light source 053 and the printed material 011 is 6 cm; the printing nozzle 021 is provided with a light source protection device so as to ensure that light emitted by the curing device cannot irradiate the printing nozzle 021; the light intensity of the curing light source 051 and the light intensity of the curing light source 052 are lower, and the curing light sources are ink pre-curing light sources, so that the printed ink can be immediately molded, diffusion cannot occur, and meanwhile, the printing nozzle 021 cannot be damaged due to small light intensity; the power of the curing light source 053 is high, and the ink on the printing stock 011 is finally completely cured at the moment. When the printing nozzle 021 moves along the direction of the Braille printing device 010X, the curing light source 051 is turned on, and the curing light source 052 is turned off; when the printing nozzle 021 returns to printing, the curing light source 052 is turned on, and the curing light source 051 is turned off; when the substrate 011 passes through the curing light source 053, it is in an on state; when the non-substrate 011 passes, it is in an off state. 3 curing light sources are matched for use, when the printer works, the curing light source 051 and the curing light source 052 can be turned on, the ink is ensured to be cured and formed quickly, and the printing and stacking efficiency is improved; and the curing light source 051 and the curing light source 052 are not turned on, so that the leveling time is prolonged, and the smoothness of the surface of the ink drop is improved.
The printing stock 011 is conveyed to the conveying device 03 through a paper feeding unit 01, the paper feeding unit 01 is connected with one end of the conveying device 03, and the paper feeding unit 01 can be a paper feeding flying-in type; the conveying device 03 conveys the printing stock 011 to a printing area, and the conveying device 03 is provided with an air suction hole which can adsorb the printing stock 011 to the conveying device 03; the density of the air suction holes in the printing area of the conveying device 03 is twice that of other areas.
In the printing area, the visual positioning system 04 is located above the printing device 02 and automatically scans the position of the printing stock 011, the visual positioning system 04 can be a camera with a visual positioning function, the camera can detect a positioning angle line at the edge of the printing stock 011, and the position and the angle of the printing area which should be adjusted are calculated according to the coordinate where the positioning angle line is located, so that even if the printing stock 011 deviates from the original position, the printing device 02 can still accurately print on the printing stock 011. Therefore, when precise positioning overprinting is required, the printing stock 011 must be provided with a positioning angle line. The paper receiving unit 06 is connected with the other end of the conveying device 03, the printed and cured braille sample is conveyed to the paper receiving unit 06 by the conveying device 03, and one braille printed sample is manufactured.
The preparation method of the braille printed matter, print 3 layers altogether, while printing in the first layer, print shower nozzle 021 moves along the printing apparatus 010X direction of the braille, the solidified light source 051 is opened, the solidified light source 052 is closed, print shower nozzle control system 022 controls the jet orifice of the shower nozzle 021 to go out the ink quantity minimum, print shower nozzle 021 only one quarter of jet orifices go out the ink, the ink prints the very thin dull polish substrate on the stock 011; when the second layer is printed, the printing nozzle 021 returns in the direction of the Braille printing device 010X, the curing light source 051 is closed, the curing light source 052 is opened, all the jet holes of the printing nozzle 021 are all jetted, the ink output is adjusted to be maximum, and the images or characters are quickly piled up; when the third layer is printed, the printing spray nozzle 021 moves along the direction of the Braille printing device 010X, all the spray holes of the printing spray nozzle 021 are all used for discharging ink, the ink discharge amount is adjusted to be minimum, the curing light source 051 and the curing light source 052 are closed, the curing light source 053 is opened, enough leveling time is guaranteed, the surface of a Braille point is smooth and mellow, and the height-diameter ratio of the printed Braille point is large.
The ink is light-cured ink, and the light-cured ink has a low-energy surface after being cured, and the surface energy is 45 mN/m. The prepolymer of the photo-curing ink is an organic silicon acrylate prepolymer.
The printed Braille printed matter prepared by the embodiment has the Braille printing height of 0.31mm and the height-diameter ratio of 0.68.
Claims (10)
1. A Braille printing apparatus, characterized in that the Braille printing apparatus (010) comprises a paper feeding unit (01), a printing device (02), a conveying device (03), a vision positioning system (04), a curing device (05) and a paper collecting unit (06); the conveying device (03) conveys the printing stocks (011) to a paper delivery unit (06) along the Y direction of the Braille printing device (010) through the printing device (02) and the curing device (05); the printing device (02) is capable of defining a printing zone of a Braille printing apparatus (010) and is composed of at least one print jet (021) and a print jet control system (022); the printing spray head (021) moves back and forth along the X direction of the Braille printing equipment (010) in a straight line way; the printing spray head control system (022) can control the number of ink jet holes and the ink output amount of all printing spray heads (021); the printing spray head (021) is installed in a splicing mode, and the length of the printing spray head (021) is larger than that of the printing stock (011) in the Y direction.
2. A braille printing device according to claim 1, characterized in that the curing means (05) are UV-curing; the curing device (05) is provided with 3 curing light sources, the curing light sources 051 and 052 are respectively connected with the printing spray head (021), the positions of the curing light sources are respectively arranged on two sides of the printing spray head (021) and are parallel to the printing spray head (021), the distance between the curing light sources and the printing spray head (021) is 10-20 cm, and the curing light intensity is 1-5W/cm2(ii) a The curing light source 053 spans above the conveying device (03) between the printing device (02) and the paper collecting unit (06), and the curing light intensity is 10-30W/cm2。
3. A braille printing device according to claim 2, characterized in that the curing light source 051 and the curing light source 052 have the same length and are greater than the print nozzle (021) length; the length of the curing light source 053 is larger than the length of the printing stock (011) in the X direction.
4. A braille printing device according to claim 2, characterized in that the height of the curing light source 051 and the curing light source 052 from the substrate (011) are the same and 1-5 cm; the height of the curing light source 053 from the printing stock (011) is 5-10 cm.
5. A braille printing device according to claim 1, characterized in that the printing nozzle (021) has a light source protection to ensure that light emitted by the curing device (05) does not impinge on the printing nozzle (021).
6. A braille printing device according to claim 1, characterized in that the conveying device (03) is provided with suction openings for sucking the substrate (011) onto the conveying device (03); the density of the air suction holes in the printing area of the conveying device (03) is higher than that of other areas.
7. A braille printing device according to claim 1, characterized in that the visual positioning system (04) allows fine adjustment of the printing position, the substrate (011) having to be provided with a corner line when a precise positioning of the overprint is required.
8. The preparation method of the braille printed matter is characterized by comprising the following steps of:
1) and (3) transmission: conveying the printing material (011) to a conveying device (03) through a paper feeding unit (01), and conveying the printing material (011) to a printing area through the conveying device (03);
2) visual positioning and file transmission: in a printing area, the visual positioning system (04) automatically scans the position of a printing stock (011), and adjusts the position of a file to be printed according to the position of the printing stock (011) to ensure that the positions of the printed file and the printing stock (011) are consistent;
3) printing and pre-curing: braille printing is carried out on a printing stock (011) according to the content of the file, and pre-curing molding is carried out on the printed ink by using a curing light source 051 and a curing light source 052;
4) curing and drying: after printing, the conveying device (03) conveys the printing stock (011) to a curing light source 053 for complete curing and drying;
5) the printing material (011) is recovered by a delivery unit (06).
9. The method for preparing a braille print according to claim 8, characterized in that the ink in step 3) is a photo-curing ink which after curing is a low energy surface with a surface energy of 30-50 mN/m; the prepolymer of the photo-curing ink is at least one of an organic silicon acrylate prepolymer, a fluorocarbon prepolymer or a fluorosilicone prepolymer.
10. A preparation method of a Braille printed matter according to claim 8, characterized in that the printing height of the Braille dots of the Braille printed matter is 0.1-0.5 mm, and the height-diameter ratio of the Braille dots is 0.6-0.8.
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| CN109476154A (en) * | 2017-06-02 | 2019-03-15 | 北京美科艺数码科技发展有限公司 | A kind of inkjet printing methods |
| CN207643957U (en) * | 2017-10-20 | 2018-07-24 | 兰州交通大学 | A kind of novel Braille printing device |
| CN108569059A (en) * | 2018-03-06 | 2018-09-25 | 中国科学院化学研究所 | Braille printing product and preparation method thereof |
| CN108674030A (en) * | 2018-05-22 | 2018-10-19 | 北京博源恒芯科技股份有限公司 | Ink jet printing device and method |
| CN212267014U (en) * | 2020-05-13 | 2021-01-01 | 苏州锐发打印技术有限公司 | Ink jet print head and ink jet printing apparatus |
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Application publication date: 20210713 |