CN116728977B - Ceramic ink-jet printer and ceramic ink-jet printing method - Google Patents
Ceramic ink-jet printer and ceramic ink-jet printing method Download PDFInfo
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- CN116728977B CN116728977B CN202311009669.2A CN202311009669A CN116728977B CN 116728977 B CN116728977 B CN 116728977B CN 202311009669 A CN202311009669 A CN 202311009669A CN 116728977 B CN116728977 B CN 116728977B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007641 inkjet printing Methods 0.000 title claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 132
- 239000007788 liquid Substances 0.000 claims abstract description 77
- 238000007493 shaping process Methods 0.000 claims abstract description 53
- 238000007639 printing Methods 0.000 claims abstract description 48
- 238000001035 drying Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 238000004513 sizing Methods 0.000 claims description 9
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 4
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 230000008602 contraction Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001723 curing Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000011416 infrared curing Methods 0.000 description 1
- 210000001161 mammalian embryo Anatomy 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000010020 roller printing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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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
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
- B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
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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
- B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
- B41J11/00222—Controlling the convection means
-
- 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
-
- 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
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
-
- 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
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/007—Digital printing on surfaces other than ordinary paper on glass, ceramic, tiles, concrete, stones, etc.
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0082—Digital printing on bodies of particular shapes
- B41M5/0088—Digital printing on bodies of particular shapes by ink-jet printing
Abstract
The invention discloses a ceramic ink-jet printer and a ceramic ink-jet printing method, and relates to the technical field of ceramics, wherein the ceramic ink-jet printer comprises a frame, an ink-jet printing device and a driving device; the multistage spray head of the spray printing device comprises a first spray pipe, a second spray pipe and a third spray pipe which are coaxially arranged in sequence from inside to outside; an ink flow channel is arranged in the first spray pipe; a shaping liquid flow channel is arranged between the first spray pipe and the second spray pipe; a hot air flow channel is arranged between the second spray pipe and the third spray pipe; the multiple stages of spray heads are driven by the driving device to displace according to a set path, so that printing ink, shaping liquid and/or hot air are sprayed to the designated position of the ceramic blank. The invention optimizes and improves the nozzle structure of the ceramic ink-jet printer, adopts a mode of mutually nesting a plurality of spray pipes to form the multi-stage nozzle with different flow passages, and ensures that the multi-stage nozzle has the function of spraying different media, thereby overcoming the defects of complex structure and single function of the traditional ceramic ink-jet printer.
Description
Technical Field
The invention relates to the technical field of ceramics, in particular to a ceramic ink-jet printer and a ceramic ink-jet printing method.
Background
The ceramic ink-jet printing technology is a novel technology combining ceramic surface decoration technology and computer technology, and utilizes the full-automatic computer numerical control technology to control an ink-jet printer, and the designed file information is directly printed on the ceramic surface by the multicolor ceramic ink through the ink-jet printer, so that the pattern decoration effect with vivid texture and rich colors is realized. Compared with the traditional rubber roller printing type ceramic printing, the ceramic ink-jet printing technology can automatically generate complex decorative patterns by a computer, does not need complex work such as printing plates, engraving rollers, blending glaze slurry and the like, and has the advantages of simple process, high efficiency, high precision and the like.
Such as the technical scheme disclosed in the patent with publication number of CN111036444B, the existing ceramic ink-jet printing equipment mostly has the problems of complex structure and single function. For example, after the ceramic green body is printed with a pattern, the ceramic green body needs to be calcined in a high-temperature furnace at 1100-1300 ℃ for about 30 minutes, however, most of pigments used in the conventional ink-jet printer ink are organic pigments, and the organic pigments are decomposed when directly exposed to a high temperature of 300 ℃ or more for several minutes before being cured and shaped, so that the printed pattern is blurred, and therefore, the printed pattern of the ceramic green body needs to be dried or cured before being calcined. However, in the prior art, a drying or curing mechanism is not generally arranged in the ceramic ink-jet printing device, so that people cannot process the ceramic ink-jet printing device without additionally configuring corresponding equipment, great inconvenience is brought to ceramic production, and the burden of enterprises is increased.
In addition, in the prior art, when the ink is directly sprayed on the surface of the ceramic blank body by an ink-jet printer, the ink can diffuse and bloom along the capillary holes on the surface, so that the edge of a spray pattern of a product is virtual and blurred, and especially the product with deeper color and larger ink usage amount is more obvious, which seriously affects the definition of the ceramic ink-jet printing and restricts the development and application of the ceramic ink-jet printing technology.
Disclosure of Invention
The invention provides a ceramic ink-jet printer and a ceramic ink-jet printing method, which mainly aim to solve the technical problems of complex structure, single function, poor ink-jet printing effect and low definition of the traditional ceramic ink-jet printer.
The invention adopts the following technical scheme:
a ceramic ink-jet printer comprises a frame, a jet printing device and a driving device; the machine frame is provided with a turntable for placing ceramic blanks; the jet printing device comprises a multi-stage spray head, wherein the multi-stage spray head comprises a first spray pipe, a second spray pipe and a third spray pipe which are coaxially arranged in sequence from inside to outside; an ink flow channel is arranged in the first spray pipe; a shaping liquid flow channel is arranged between the first spray pipe and the second spray pipe; a hot air flow channel is arranged between the second spray pipe and the third spray pipe; the multistage spray heads are driven by the driving device to displace according to a set path, so that printing ink, shaping liquid and/or hot air are sprayed to the appointed position of the ceramic blank.
Further, the inner wall port of the first spray pipe is in a straight pipe shape, and the outer wall port of the first spray pipe is in a contracted shape; and the ports of the inner wall and the outer wall of the second spray pipe and the third spray pipe are contracted.
Further, the outer contraction angle G of the first nozzle is smaller than the outer contraction angle H of the second nozzle and the outer contraction angle K of the third nozzle.
Further, the jet printing device also comprises a feeding mechanism, wherein the feeding mechanism comprises a shaping liquid storage tank, a hot air source and a plurality of ink boxes; each multi-stage spray head is provided with a feed box, and the feed box is provided with a mounting cavity for mounting the ink box, a liquid storage cavity communicated with the shaping liquid storage tank and a hot air cavity communicated with the hot air source.
Further, the jet printing device further comprises infrared lamps, and the plurality of infrared lamps are driven by the driving device to displace according to a set path, so that infrared rays are irradiated to the appointed position of the ceramic blank.
A method of ceramic inkjet printing comprising the steps of:
s1, placing a ceramic blank on a rotary table of a ceramic ink-jet printer, so that the rotary table drives the ceramic blank to rotate at a constant speed;
s2, adjusting the rotating speed of the turntable to V 1 The second spray pipe and the third spray pipe of the multi-stage spray head are opened, and meanwhile, the multi-stage spray head is driven by the driving device to displace according to a set path, so that the shaping liquid is uniformly sprayed to a designated position of the ceramic blank body, and the shaping liquid on the surface of the ceramic blank body is dried by hot air;
s3, adjusting the rotating speed of the turntable to V 2 And opening the first spray pipe and the third spray pipe of the multi-stage spray head, and simultaneously driving the multi-stage spray head to displace according to a set path through a driving device, so that the printing ink is uniformly sprayed onto the surface of the dried shaping liquid, and the printing ink on the surface of the shaping liquid is dried through hot air, so that a spray printing pattern is formed.
Further, in step S2, the drying temperature of the sizing solution is 120-180 ℃; in step S3, the ink is dried at a temperature of 140-200deg.C.
Further, the shaping liquid comprises the following components: 6-9 parts of carboxymethyl cellulose, 90-98 parts of water and 0.1-0.9 part of sodium tripolyphosphate.
A method of ceramic inkjet printing, characterized by: the method comprises the following steps:
s1, placing a ceramic blank on a rotary table of a ceramic ink-jet printer, so that the rotary table drives the ceramic blank to rotate at a constant speed;
s2, adjusting the rotating speed of the turntable to V 1 A second spray pipe of the multi-stage spray head is opened, and the multi-stage spray head is driven to displace according to a set path through a driving device, so that the shaping liquid is uniformly sprayed to a designated position of the ceramic blank;
s3, adjusting the rotating speed of the turntable to V 2 A third spray pipe of the multi-stage spray head is opened, and the multi-stage spray head is driven by a driving device to displace according to a set path, so that the shaping liquid on the surface of the ceramic blank body is dried by uniformly sprayed hot air;
s4, adjusting the rotating speed of the turntable to V 3 The first spray pipe and the third spray pipe of the multi-stage spray head are opened, and meanwhile, the multi-stage spray head is driven by the driving device to displace according to a set path, so that the printing ink is uniformly sprayed onto the surface of the dried shaping liquid, and the printing ink on the surface of the shaping liquid is preliminarily dried by hot air, so that a jet printing pattern is formed;
s5, adjusting the rotating speed of the turntable to V 4 The infrared lamp is started, and meanwhile, the driving device drives the infrared lamp to displace according to a set path, so that infrared rays are irradiated to the surface of the ceramic blank through the infrared lamp, and the spray printing pattern on the surface of the ceramic blank is solidified.
Further, in step S3, the drying temperature of the setting liquid is 120-180 ℃; in step S4, the primary drying temperature of the ink is 140-180 ℃; in step S5, the curing temperature of the ink is 150-200 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention optimizes and improves the spray head structure of the ceramic ink-jet printer, adopts a mode of mutually nesting a plurality of spray pipes to form the multi-stage spray head with different flow passages, adopts an arrangement mode of ink, sizing liquid and hot air to measure each flow passage from inside to outside, and thus, the multi-stage spray head has the function of spraying different media, thereby overcoming the defects of complex structure and single function of the traditional ceramic ink-jet printer.
2. The invention provides the conception of the shaping liquid and the component proportion of the shaping liquid, and can inhibit the fluidity of the printing ink by the shaping liquid, so that the printing ink is shaped rapidly, the phenomenon of transverse diffusion is avoided, the jet printing pattern with vivid effect, high definition and high color saturation is ensured to be formed, and the quality of ceramic jet printing is improved fundamentally.
3. The ceramic ink-jet printing method provided by the invention fully utilizes the structural advantages of the multi-stage spray head, and the multi-stage spray head is driven by the driving device to displace according to the set path, so that the ink, the shaping liquid and/or the hot air can be sprayed to the designated position of the ceramic blank according to the set procedure, the process is simple, the operation is convenient, and the control difficulty of the ceramic ink-jet printing method is effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a ceramic inkjet printer according to a first embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a multi-stage showerhead according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a jet printing apparatus and a driving apparatus according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a jet printing apparatus according to a first embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a jet printing apparatus according to a second embodiment of the present invention.
In the figure: 1-a frame; 10-ceramic embryo body; 11-a turntable; 2-jet printing device; 21-a multi-stage spray head; 211-a first nozzle; 212-a second nozzle; 213-a third nozzle; 214-ink flow channels; 215-a sizing liquid flow channel; 216-hot air flow passage; 22-infrared lamps; 3-a driving device; a 31-L-shaped mounting plate; 32-a three-dimensional sliding mechanism; 321-a first screw pair; 322-a second screw pair; 323-third screw pair; 324-riser; 325-cross plate; 326-a connection plate; 327-guiding assembly.
Detailed Description
Specific embodiments of the present invention will be described below with reference to the accompanying drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details.
Embodiment one:
referring to fig. 1 and 2, the present embodiment provides a ceramic inkjet printer including a frame 1, a jet printing device 2, and a driving device 3; the frame 1 is provided with a turntable 11 for placing the ceramic blank 10; the jet printing device 2 comprises a multi-stage nozzle 21, wherein the multi-stage nozzle 21 comprises a first spray pipe 211, a second spray pipe 212 and a third spray pipe 213 which are coaxially arranged in sequence from inside to outside; an ink flow channel 214 is arranged in the first spray pipe 211; a shaping liquid flow passage 215 is arranged between the first spray pipe 211 and the second spray pipe 212; a hot air flow passage 216 is arranged between the second spray pipe 212 and the third spray pipe 213; the multiple stage spray heads 21 are driven by the driving device 3 to displace according to a set path, so that ink, shaping liquid and/or hot air are sprayed to the designated positions of the ceramic blank 10. According to the embodiment, the structure of the spray head of the traditional ceramic ink-jet printer is optimized and improved, a plurality of spray pipes are mutually nested to form a multi-stage spray head with different flow channels, and the flow channels are counted from inside to outside in an arrangement mode of ink, sizing liquid and hot air, so that the multi-stage spray head has the function of spraying different mediums.
Referring to fig. 2, the inner wall port of the first nozzle 211 is straight, so that the ink can be precisely and yet precisely ejected onto the designated position of the ceramic green body 10. The outer wall ports of the first nozzle 211 are contracted, and the inner and outer wall ports of the second nozzle 212 and the third nozzle 213 are also contracted, so that it is possible to ensure that the ejected setting liquid and hot air are effectively covered in the designated area of the jet pattern. Specifically, the present embodiment sets the outer contraction angle G of the first nozzle 211 smaller than the outer contraction angle H of the second nozzle 212 and the outer contraction angle K of the third nozzle 213.
Referring to fig. 1 and 2, the jet printing apparatus 2 further includes a feeding mechanism (not shown in the drawings), which includes a forming liquid storage tank, a hot air source, and a plurality of ink cartridges; specifically, each multi-stage nozzle 21 is provided with a feed box, and a mounting cavity for mounting the ink cartridge is arranged in the feed box, and is provided with a liquid storage cavity communicated with a shaping liquid storage tank and a hot air cavity communicated with a hot air source. All the feed boxes are communicated with the same shaping liquid storage tank and the same hot air source, the one-to-many feed mode can ensure the feed consistency of shaping liquid and hot air, and the control and operation of discharging are convenient. Each feed box is provided with an independent ink box, so that the color of the ink can be flexibly adjusted according to the requirements of jet printing patterns, and the printing of different color patterns can be finished at one time.
Referring to fig. 1, 3 and 4, the driving device 3 includes an L-shaped mounting plate 31 and a three-dimensional sliding mechanism 32, one side of the L-shaped mounting plate 31 is fixedly connected to the three-dimensional sliding mechanism 32, and a plurality of multi-stage nozzles 21 are arranged on the other side. Preferably, the three-dimensional sliding mechanism 32 includes a first screw pair 321, a second screw pair 322, a third screw pair 323, a riser 324, a cross plate 325, and a connection plate 326; the vertical plate 324 is vertically arranged on the table top of the frame 1 in a front-back sliding way through the first screw rod pair 321; the cross plate 325 is arranged on the vertical plate 324 in a vertically sliding way through the second screw pair 322; the connection plate 326 is provided on the cross plate 325 so as to be slidable left and right by a third screw pair 323; the L-shaped mounting plate 31 is fixedly disposed on the connection plate 326. In addition, each screw pair is further provided with a guide assembly 327, so that smooth operation of the three-dimensional sliding mechanism 32 can be ensured. The action of the driving device 3 is specifically controlled by a control box (not shown in the figure), the control box can collect information such as the shape, the outline, the humidity and the like of the ceramic blank body through accessories such as a visual sensor and the like, and the information is converted into control parameters of the driving device 3 based on the design requirements (jet printing patterns, process parameters and the like) of workers, so that the multistage nozzle 21 is controlled to displace according to a set path.
Referring to fig. 1 to 4, the working method of the ceramic inkjet printer provided in this embodiment includes the following steps:
s1, placing the ceramic blank 10 on a rotary table 11 of a ceramic ink-jet printer, so that the rotary table 11 drives the ceramic blank 10 to rotate at a constant speed.
S2, adjusting the rotating speed of the turntable 11 to V 1 The second spray pipe 212 and the third spray pipe 213 of the multi-stage spray head 21 are opened, and simultaneously the multi-stage spray head 21 is driven by the driving device 3 to displace according to a set path, so that the shaping liquid is uniformly sprayed to a designated position of the ceramic green body 10, and the shaping liquid on the surface of the ceramic green body 10 is dried by hot air. In this step, the working time of the second nozzle 212 and the third nozzle 213 are different, and the specific setting principle is as follows: after the forming liquid is sprayed according to the set quantity, the second spray pipe 212 is closed immediately; after the drying of the setting liquid is ensured, the third nozzle 213 is closed again.
S3, adjusting the rotating speed of the turntable 11 to V 2 The first spray pipe 211 and the third spray pipe 213 of the multi-stage spray head 21 are opened, and meanwhile, the multi-stage spray head 21 is driven by the driving device 3 to displace according to a set path, so that the ink is uniformly sprayed onto the surface of the dried shaping liquid, and the ink on the surface of the shaping liquid is dried by hot air, so that a spray printing pattern is formed; in this step, the working time of the first nozzle 211 and the third nozzle 213 are different, and the specific setting principle is as follows: after the ink is ejected according to the set amount, the first nozzle 211 is closed immediately; after the ink is ensured to be dried, the third nozzle 213 is closed again.
It has been found that the main reason for the diffusion of the ceramic ink-jet printing pattern is that the pressed ceramic body 10 is relatively dense, has poor ink absorption, and the wettability of the inside of the ceramic body 10 is higher than that of the surface, so that the liquid ink cannot be absorbed by the ceramic body 10 rapidly in the wetting process, but is diffused and scattered laterally. Based on this, the invention proposes the inventive concept of forming liquid, namely, before ink-jet printing, spraying a layer of forming liquid on the surface of the ceramic blank 10, drying the forming liquid, and then spraying ink on the dried forming liquid, so that the ink is formed rapidly, and the phenomenon of transverse diffusion is avoided. It can be seen that the nature of the setting liquid is to inhibit the fluidity of the ink, thereby achieving the effect of rapid setting. As a preferable scheme, the shaping liquid comprises the following components: 6-9 parts of carboxymethyl cellulose, 90-98 parts of water and 0.1-0.9 part of sodium tripolyphosphate. The carboxymethyl cellulose, water and sodium tripolyphosphate are mixed according to a proportion, and are added into a ball mill for stirring and grinding, so that the shaping liquid can be formed, the manufacturing method is simple, and the operation is easy.
Referring to fig. 2, the flow paths of the multi-stage nozzle 21 are respectively an ink flow path 214, a shaping liquid flow path 215 and a hot air flow path 216 from inside to outside, so that in step S2, by adjusting the rotation speed of the turntable 11 and the displacement path of the multi-stage nozzle 21, it is ensured that a layer of shaping liquid is uniformly covered in a specified spray pattern area. In step S3, the proper rotational speed of the turntable and the displacement path of the multi-stage nozzle 21 are readjusted to ensure that the ink is precisely ejected onto the surface of the ceramic green body 10 covered with the sizing liquid. Because the hot air flow channel 216 is located at the outermost side of the multi-stage spray head 21, the sprayed hot air can effectively wrap the shaping liquid or ink therein, thereby rapidly drying the shaping liquid or ink on the basis of preventing the shaping liquid or ink from being out-diffused. Preferably, the drying temperature of the setting liquid is generally controlled to 120-180 ℃, and the drying temperature of the ink is generally controlled to 140-200 ℃. The practice proves that the ink can be finally formed into a complete spray printing pattern after being dried by hot air, and the subsequent procedures of spraying overglaze, high-temperature calcination and the like can not cause the phenomena of fading, decomposition, distortion and the like of the ink, thereby effectively ensuring the definition of the spray printing pattern.
Embodiment two:
referring to fig. 5, unlike the first embodiment, the jet printing apparatus 2 of the present embodiment further includes infrared lamps 22, and the plurality of infrared lamps 22 are driven by the driving device 2 to displace along a set path, so as to irradiate infrared rays to a specified position of the ceramic blank 10. Specifically, the L-shaped mounting plate 31 is provided with a plurality of infrared lamps 22 arranged below the multi-stage head 21.
Referring to fig. 1 to 5, the working method of the ceramic inkjet printer provided in this embodiment includes the following steps:
s1, placing the ceramic blank 10 on a rotary table 11 of a ceramic ink-jet printer, so that the rotary table 11 drives the ceramic blank 10 to rotate at a constant speed.
S2, adjusting the rotating speed of the turntable 11 to V 1 The second nozzle 212 of the multi-stage nozzle 21 is opened, and the multi-stage nozzle 21 is driven to displace according to a set path by the driving device 3, so that the shaping liquid is uniformly sprayed to the designated position of the ceramic blank 10. After the injection of the setting liquid in the set amount, the second nozzle 212 is closed immediately.
S3, adjusting the rotating speed of the turntable 11 to V 2 The third spray pipe 213 of the multi-stage spray head 21 is opened, and simultaneously the multi-stage spray head 21 is driven to displace according to a set path by the driving device 3, so that the shaping liquid on the surface of the ceramic blank 10 is dried by uniformly sprayed hot air. After the setting liquid is dried, the third spray pipe 213 is closed.
S4, adjusting the rotating speed of the turntable 11 to V 3 The first spray pipe 211 and the third spray pipe 213 of the multi-stage spray head 21 are opened, and simultaneously the multi-stage spray head 21 is driven by the driving device 3 to displace according to a set path, so that the ink is uniformly sprayed onto the surface of the dried sizing liquid, and the ink on the surface of the sizing liquid is preliminarily dried by hot air, so that a spray printing pattern is formed. In this step, the first nozzle 211 and the third nozzle 213 are operated for the same time, and after the ink is ejected by a set amount, the first nozzle 211 and the third nozzle 213 are closed immediately so as to perform the next step.
S5, adjusting the rotating speed of the turntable 11 to V 4 The infrared lamp is turned on, and meanwhile, the driving device 3 drives the infrared lamp 22 to displace according to a set path, so that the infrared lamp 22 irradiates infrared rays to the surface of the ceramic blank 10, and the spray printing pattern on the surface of the ceramic blank 10 is solidified.
In this embodiment, the injection and drying of the shaping liquid are separately performed in two steps, so that the injection area of the shaping liquid and the drying area of the hot air can be controlled more precisely and simply by adjusting the rotation speed of the turntable 11 and the displacement path of the multi-stage nozzle 21. Preferably, the drying temperature of the hot air in step S3 is 120-180 ℃.
In the process of ink spraying, hot air mainly plays roles in assisting ink shaping and primary drying, and after the ink is sprayed, the ink can be thoroughly dried, solidified and shaped by adopting an infrared curing mode. Preferably, the preliminary drying temperature of the ink in step S4 is 140 to 180 ℃ and the curing temperature of the ink in step S5 is 150 to 200 ℃.
The foregoing is merely illustrative of specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the design concept shall fall within the scope of the present invention.
Claims (7)
1. A ceramic inkjet printer, characterized by: comprises a frame, a jet printing device and a driving device; the machine frame is provided with a turntable for placing ceramic blanks; the jet printing device comprises a multi-stage spray head, wherein the multi-stage spray head comprises a first spray pipe, a second spray pipe and a third spray pipe which are coaxially arranged in sequence from inside to outside; an ink flow channel is arranged in the first spray pipe; a shaping liquid flow channel is arranged between the first spray pipe and the second spray pipe; a hot air flow channel is arranged between the second spray pipe and the third spray pipe; the inner wall port of the first spray pipe is in a straight pipe shape, and the outer wall port of the first spray pipe is in a contracted shape; the ports of the inner wall and the outer wall of the second spray pipe and the third spray pipe are contracted; the external shrinkage angle G of the first spray pipe is smaller than the external shrinkage angle H of the second spray pipe and the external shrinkage angle K of the third spray pipe; the multistage spray heads are driven by the driving device to displace according to a set path, so that printing ink, shaping liquid and/or hot air are sprayed to the appointed position of the ceramic blank; the shaping liquid comprises the following components: 6-9 parts of carboxymethyl cellulose, 90-98 parts of water and 0.1-0.9 part of sodium tripolyphosphate.
2. A ceramic inkjet printer according to claim 1 wherein: the jet printing device also comprises a feeding mechanism, wherein the feeding mechanism comprises a shaping liquid storage tank, a hot air source and a plurality of ink boxes; each multi-stage spray head is provided with a feed box, and the feed box is provided with a mounting cavity for mounting the ink box, a liquid storage cavity communicated with the shaping liquid storage tank and a hot air cavity communicated with the hot air source.
3. A ceramic inkjet printer according to claim 1 wherein: the jet printing device further comprises infrared lamps, and the infrared lamps are driven by the driving device to displace according to a set path, so that infrared rays are irradiated to the appointed position of the ceramic blank.
4. A ceramic inkjet printing method according to any one of claims 1 to 3 wherein: the method comprises the following steps:
s1, placing a ceramic blank on a rotary table of a ceramic ink-jet printer, so that the rotary table drives the ceramic blank to rotate at a constant speed;
s2, adjusting the rotating speed of the turntable to V 1 The second spray pipe and the third spray pipe of the multi-stage spray head are opened, and meanwhile, the multi-stage spray head is driven by the driving device to displace according to a set path, so that the shaping liquid is uniformly sprayed to a designated position of the ceramic blank body, and the shaping liquid on the surface of the ceramic blank body is dried by hot air;
s3, adjusting the rotating speed of the turntable to V 2 And opening the first spray pipe and the third spray pipe of the multi-stage spray head, and simultaneously driving the multi-stage spray head to displace according to a set path through a driving device, so that the printing ink is uniformly sprayed onto the surface of the dried shaping liquid, and the printing ink on the surface of the shaping liquid is dried through hot air, so that a spray printing pattern is formed.
5. A method of ceramic inkjet printing according to claim 4 wherein: in the step S2, the drying temperature of the sizing liquid is 120-180 ℃; in step S3, the ink is dried at a temperature of 140-200deg.C.
6. A ceramic inkjet printing method according to claim 3 wherein: the method comprises the following steps:
s1, placing a ceramic blank on a rotary table of a ceramic ink-jet printer, so that the rotary table drives the ceramic blank to rotate at a constant speed;
s2, regulating the rotating speed of the turntableIs formed into V 1 A second spray pipe of the multi-stage spray head is opened, and the multi-stage spray head is driven to displace according to a set path through a driving device, so that the shaping liquid is uniformly sprayed to a designated position of the ceramic blank;
s3, adjusting the rotating speed of the turntable to V 2 A third spray pipe of the multi-stage spray head is opened, and the multi-stage spray head is driven by a driving device to displace according to a set path, so that the shaping liquid on the surface of the ceramic blank body is dried by uniformly sprayed hot air;
s4, adjusting the rotating speed of the turntable to V 3 The first spray pipe and the third spray pipe of the multi-stage spray head are opened, and meanwhile, the multi-stage spray head is driven by the driving device to displace according to a set path, so that the printing ink is uniformly sprayed onto the surface of the dried shaping liquid, and the printing ink on the surface of the shaping liquid is preliminarily dried by hot air, so that a jet printing pattern is formed;
s5, adjusting the rotating speed of the turntable to V 4 The infrared lamp is started, and meanwhile, the driving device drives the infrared lamp to displace according to a set path, so that infrared rays are irradiated to the surface of the ceramic blank through the infrared lamp, and the spray printing pattern on the surface of the ceramic blank is solidified.
7. A method of ceramic inkjet printing according to claim 6 wherein: in the step S3, the drying temperature of the sizing liquid is 120-180 ℃; in step S4, the primary drying temperature of the ink is 140-180 ℃; in step S5, the curing temperature of the ink is 150-200 ℃.
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| CN116728977A (en) | 2023-09-12 |
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