CN113580731B - Environment-friendly printing device and method - Google Patents
Environment-friendly printing device and method Download PDFInfo
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- CN113580731B CN113580731B CN202110872387.XA CN202110872387A CN113580731B CN 113580731 B CN113580731 B CN 113580731B CN 202110872387 A CN202110872387 A CN 202110872387A CN 113580731 B CN113580731 B CN 113580731B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/02—Rotary lithographic machines for offset printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
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- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention discloses a green environment-friendly printing device and a printing method in the field of packaging and printing, and the green environment-friendly printing device comprises a printing plate roller arranged on a rack, wherein a dampening mechanism and an ink supply mechanism are arranged on the printing plate roller, the dampening mechanism is connected with a water storage bin fixed on the rack, the ink supply mechanism comprises an ink supply bin and a cooling bin, the ink supply bin is positioned in the cooling bin, two ends of the cooling bin are respectively communicated with the water storage bin and the dampening mechanism through a first communicating pipe and a second communicating pipe, the cooling bin is also provided with a control mechanism, and the control mechanism controls the flow of water entering the cooling bin from the water storage bin according to the viscosity of ink in the ink supply bin. The invention can not only utilize the water in the dampening mechanism to cool the printing ink, but also avoid the influence on the printing quality caused by the over-low viscosity of the printing ink due to the temperature rise; the viscosity change of the printing ink can be measured in real time in the printing process, the temperature of the printing ink is automatically adjusted, the printing ink is ensured to have proper viscosity and fluidity, manual adjustment is avoided, the labor intensity of workers is reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the field of package printing, and particularly relates to a green environment-friendly printing device and a printing method.
Background
Lithographic printing is a common printing method, which uses the principle that water and oil are not mixed to make the print portion retain a layer of oil film rich in grease, while the plate surface on the non-print portion can absorb proper water.
During the printing process, the viscosity and the fluidity of the ink change along with the change of temperature. The higher the temperature, the lower the viscosity and the greater the fluidity. The viscosity and the fluidity of the ink have great relation with the production process and the quality of printed products. The ink has too high viscosity and too low fluidity, so that the ink is not smoothly and uniformly spread, and the ink color on the printing surface is not uniform; the ink has too low viscosity and too high fluidity, so that the prints cannot be accurately transferred, the image-text layers are not clear, the ink color is not full, the color is not bright, and the quality of the printed products is reduced. Therefore, the viscosity and fluidity of the ink need to be properly adjusted during the production process. The currently common method is to externally connect a cooling mechanism to reduce the temperature and reduce the viscosity of the ink, and simultaneously continuously stir the ink to improve the fluidity of the ink by utilizing the thixotropy of the ink. However, such adjustment requires an additional cooling mechanism, which increases the cost, and because of the different properties of different inks, the temperature and the ink stirring speed need to be manually readjusted when the external temperature changes or the ink is replaced, which increases the labor intensity of workers and reduces the production efficiency.
Therefore, there is a need to provide an environment-friendly printing apparatus and a printing method, which can not only cool the ink by using the water in the dampening mechanism, but also avoid the influence of the too low viscosity of the ink caused by the temperature rise on the printing quality; the viscosity change of the printing ink can be measured in real time in the printing process, the temperature of the printing ink is automatically adjusted, the printing ink is ensured to have proper viscosity and fluidity, manual adjustment is avoided, the labor intensity of workers is reduced, and the production efficiency is improved.
Disclosure of Invention
The invention aims to provide a green environment-friendly printing device and a printing method, which aim to solve the problems of the prior art in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a green type printing device, is including installing the version roller in the frame, be provided with on the version roller and be used for the dampening mechanism of version roller dampening and supply the ink mechanism for the version roller supplies the ink, dampening mechanism links to each other with the water storage storehouse of fixing in the frame, supply ink mechanism including supplying china ink storehouse and cooling bin, supply china ink storehouse to be located the cooling bin, the both ends in cooling bin still are provided with control mechanism on the cooling bin through first communicating pipe, second communicating pipe intercommunication water storage storehouse, dampening mechanism respectively, control mechanism gets into the flow of cooling bin water by the water storage storehouse according to supplying the viscosity control of ink in the ink storehouse.
As a further scheme of the invention, the control mechanism comprises a measuring unit for measuring the viscosity of the ink in the ink supply bin, the measuring unit comprises a screw rod which is rotatably arranged in the ink supply bin along the length direction of the ink supply bin, the screw rod is externally connected with a power supply, a threaded sleeve is in threaded connection with the screw rod, and a stirring plate for stirring the ink is rotatably arranged at the lower end of the threaded sleeve; the stirring plate is fixedly installed on the rotating shaft, and the rotating shaft is rotatably installed on the lower end face of the threaded sleeve.
As a further scheme of the invention, the control mechanism further comprises an adjusting unit, and the adjusting unit is used for adjusting the flow of water entering the cooling bin from the water storage bin; the adjusting unit includes that fixed mounting rotates epaxial cam, the cam has two mutual symmetries in the bellying of axis of rotation axis, it has the pinch-off blades still to slidable mounting on the bulkhead in cooling bin, and fixed mounting has clamping part on the pinch-off blades, clamping part changes the pipe diameter of first communicating pipe through pressing from both sides tight first communicating pipe.
As a further scheme of the invention, the cooling bin is obliquely arranged, and one end of the cooling bin close to the first communicating pipe is higher than one end of the cooling bin close to the second communicating pipe.
As a further scheme of the invention, the first communicating pipe is a rubber pipeline.
As a further scheme of the invention, the printing plate roller is arranged on a roller changing mechanism, the roller changing mechanism comprises a sun wheel which is rotatably arranged on a rack, planetary wheels which are arranged along the axial outer side of the sun wheel at intervals are meshed with the sun wheel, and the planetary wheels are connected through a planetary carrier; the printing plate roller and the planet roller are coaxially arranged; a gear ring is arranged on the outer side of the planet wheel and internally meshed with the planet wheel; a switching cylinder is also fixedly arranged on the rack, a switching block is fixedly arranged on the switching cylinder, and the switching block is vertically and slidably arranged on the rack; still slidable mounting has the first fixed block that is used for fixed planet carrier respectively in the frame for the second fixed block of fixed ring gear, the switching piece drives first fixed block, the fixed planet carrier of second fixed block, ring gear respectively.
As a further scheme of the invention, a washing mechanism for cleaning the replaced printing plate roller is arranged in the water storage bin; the upper end of the water storage bin is in a bell mouth shape; the flushing mechanism comprises an extrusion plate vertically and slidably mounted in the water storage bin, the extrusion plate is fixedly connected with a driving plate arranged below the water storage bin through a connecting rod, and the driving plate is positioned on the revolution path of the printing plate roller; the connecting rod penetrates through the bottom surface of the water storage bin, and a first compression spring is arranged between the extrusion plate and the bottom surface of the water storage bin; a washing head is arranged at the bottom end of the water storage bin and points to the replaced printing plate roller; and the squeezing plate squeezes water in the water storage bin to wash the replaced printing plate roller through the washing head.
In a further aspect of the present invention, a recovery unit for recovering the ink and the water under flushing is provided below the flushing unit.
The invention also provides a green environment-friendly printing method, which mainly comprises the following steps:
s1: when printing, a water storage bin is filled with water, a planet carrier is fixed on a first fixing block, the water in the water storage bin enters a dampening mechanism through a cooling bin in an ink supply mechanism, a motor is started, the dampening mechanism damps a printing plate roller, the ink supply mechanism supplies ink to the printing plate roller after dampening, and the printing plate roller rotates to imprint printing ink on paper between a rubber roller and a stamping roller through the rubber roller;
s2: when the roller is changed, the first fixing block is unlocked, the second fixing block fixes the gear ring, the printing plate roller starts to be switched, and the washing mechanism washes the changed printing plate roller in the switching process;
s3: after the roller changing is finished, the second fixing block is unlocked, the planet carrier is fixed by the first fixing block, the printing is continued, and the circular reciprocating motion is realized.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can not only utilize the water in the dampening mechanism to cool the printing ink, but also avoid the influence on the printing quality caused by the over-low viscosity of the printing ink due to the temperature rise; the viscosity change of the printing ink can be measured in real time in the printing process, the temperature of the printing ink is automatically adjusted, the printing ink is ensured to have proper viscosity and fluidity, manual adjustment is avoided, the labor intensity of workers is reduced, and the production efficiency is improved.
2. According to the invention, the viscosity change of the ink in the ink supply bin is judged through the rotation angle change of the rotating shaft, so that the waste of printing raw materials caused by manual direct trial printing observation of a printed matter is avoided, and the printing cost is reduced. The invention can measure the viscosity change of the printing ink in real time during printing, avoids manual observation, reduces the labor intensity of workers, improves the efficiency, and avoids the waste of printing raw materials caused by the fact that the workers do not observe and adjust in time.
3. The flow of water entering the cooling bin from the water storage bin is controlled by changing the pipe diameter of the first communicating pipe, when the viscosity of the ink is higher, the flow of the water is reduced, the cooling effect of the cooling bin is reduced, the temperature of the ink is increased, the viscosity is reduced, and the phenomenon that the ink is not smoothly distributed and is not uniform on a printing surface due to too high viscosity of the ink is avoided; when the viscosity of the ink is smaller, the flow of water is increased, the cooling effect of the cooling bin is improved, the temperature of the ink is reduced, the viscosity is increased, the phenomena that the print cannot be accurately transferred due to too small viscosity of the ink, the image-text layers are unclear, the ink color is not full, the color is not bright and the quality of a printed product is reduced are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2 according to the present invention;
FIG. 4 is a schematic structural view of a water storage bin, an ink supply mechanism and a dampening mechanism of the present invention;
FIG. 5 is an enlarged view of a portion B of FIG. 4 in accordance with the present invention;
FIG. 6 is an enlarged view of a portion C of FIG. 4 in accordance with the present invention;
FIG. 7 is a cross-sectional view of a reservoir, ink supply mechanism and dampening mechanism of the present invention;
FIG. 8 is an enlarged view of a portion D of FIG. 7 in accordance with the present invention;
FIG. 9 is a schematic view of the structure of the measuring unit of the present invention;
FIG. 10 is a process flow chart of an environment-friendly printing method according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-printing plate roller, 2-rubber roller, 3-embossing roller, 4-dampening mechanism, 5-ink supply mechanism, 51-ink supply bin, 52-cooling bin, 53-first communicating pipe, 54-second communicating pipe, 6-water storage bin, 61-extrusion plate, 62-connecting rod, 63-driving plate, 64-first compression spring, 65-flushing head, 7-control mechanism, 71-measuring unit, 711-screw rod, 712-screw sleeve, 713-stirring plate, 714-rotating shaft, 72-adjusting unit, 721-cam, 722-bulge, 723-clamping plate, 724-clamping part, 8-roller changing mechanism, 81-sun gear, 82-planet gear, 83-planet carrier, 84-gear ring, 85-switching cylinder, 86-switching block, 87-first fixed block and 85-second fixed block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, an environment-friendly printing apparatus includes a printing plate roller 1 mounted on a frame, a dampening mechanism 4 for dampening the printing plate roller 1 and an ink supply mechanism 5 for supplying ink to the printing plate roller 1 are disposed on the printing plate roller 1, the dampening mechanism 4 is connected to a water storage bin 6 fixed on the frame, the ink supply mechanism 5 includes an ink supply bin 51 and a cooling bin, the ink supply bin 51 is located in the cooling bin, two ends of the cooling bin are respectively communicated with the water storage bin 6 and the dampening mechanism 4 through a first communicating pipe 53 and a second communicating pipe 54, a control mechanism is further disposed on the cooling bin, and the control mechanism 7 controls the flow of water entering the cooling bin from the water storage bin 6 according to the viscosity of ink in the ink supply bin 51.
During the printing process, the viscosity and the fluidity of the ink change along with the change of temperature. The higher the temperature, the lower the viscosity and the greater the fluidity. The viscosity and the fluidity of the ink have great relation with the production process and the quality of printed products. The ink has too high viscosity and too low fluidity, so that the ink is not smoothly and uniformly spread, and the ink color on the printing surface is not uniform; the ink has too low viscosity and too high fluidity, so that the prints cannot be accurately transferred, the image-text layers are not clear, the ink color is not full, the color is not bright, and the quality of the printed products is reduced. Therefore, the viscosity and fluidity of the ink need to be properly adjusted during the production process. The currently common method is to externally connect a cooling mechanism to reduce the temperature and reduce the viscosity of the ink, and simultaneously continuously stir the ink to improve the fluidity of the ink by utilizing the thixotropy of the ink. However, such adjustment requires an additional cooling mechanism, which increases the cost, and because of the different properties of different inks, the temperature and the ink stirring speed need to be manually readjusted when the external temperature changes or the ink is replaced, which increases the labor intensity of workers and reduces the production efficiency.
When the invention works, as shown in fig. 1, 2 and 5, firstly, a water storage bin 6 is filled with water, an ink supply bin 51 is filled with ink, the water in the water storage bin 6 enters a dampening mechanism 4 through a cooling bin in an ink supply mechanism 5, a motor is started, the dampening mechanism 4 damps a printing plate roller 1, the ink supply mechanism 5 supplies ink to the printing plate roller 1 after dampening, and the printing plate roller 1 rotates to imprint the ink on paper positioned between a rubber roller and a stamping roller 3 through the rubber roller 2, so that printing is finished. Because the ink supply reservoir 51 is located within the cooling reservoir 52. When the water storage bin 6 supplies water to the dampening mechanism 4, the water firstly enters the cooling bin from the water storage bin 6 through the first communicating pipe 53, and then the water enters the dampening mechanism 4 from the cooling bin through the second communicating pipe 54. Water can be supplied the temperature to storehouse 51 in cooling bin 52 when the process cooling bin, avoids supplying the printing ink in the storehouse 51 to make viscosity reduce because of the high temperature, makes the trace transfer inaccurately, influences printing quality. During printing, the control mechanism 7 adjusts the flow rate of water passing through the cooling chamber 52 in real time according to the viscosity of the ink in the ink supply box, and ensures that the ink in the ink supply chamber 51 maintains proper viscosity by controlling the temperature. When the viscosity of the ink is too low, the flow rate of the water passing through the cooling bin 52 is increased, the cooling effect is enhanced, the temperature of the ink is reduced, and the viscosity is increased; when the viscosity of the ink is too high, the flow rate of the water passing through the cooling chamber 52 is reduced, the cooling effect is weakened, the temperature of the ink is increased, and the viscosity is reduced. The invention can not only utilize the water in the dampening mechanism 4 to cool the printing ink, but also avoid the problem that the viscosity of the printing ink is too low due to the rise of the temperature, thereby influencing the printing quality; the viscosity change of the printing ink can be measured in real time in the printing process, the temperature of the printing ink is automatically adjusted, the printing ink is ensured to have proper viscosity and fluidity, manual adjustment is avoided, the labor intensity of workers is reduced, and the production efficiency is improved.
As a further aspect of the present invention, the control mechanism 7 includes a measuring unit 71 for measuring viscosity of the ink in the ink supply chamber 51, the measuring unit 71 includes a screw 711 rotatably installed in the ink supply chamber 51 along the length direction of the ink supply chamber 51, the screw 711 is externally connected with a power supply, a threaded sleeve 712 is threadedly connected to the screw 711, and a stirring plate 713 for stirring the ink is rotatably installed at the lower end of the threaded sleeve 712; the stir plate 713 is fixedly mounted on a rotating shaft 714, and the rotating shaft 714 is rotatably mounted on the lower end surface of the threaded sleeve 712.
The present invention requires real-time measurement of the viscosity of the ink in the ink supply cartridge. As shown in fig. 6 and 9, in the present invention, during printing, the screw 711 of the external power source rotates to drive the screw 712 on the screw 711 to reciprocate in the ink supply bin 51, and the ink is continuously stirred by the stirring plate, so as to improve the fluidity thereof. As shown in fig. 9, the stirring plate is rotatably mounted at the lower end of the screw sleeve 712, when the screw sleeve 712 reciprocates, the stirring plate moves along with the screw sleeve 712, if the viscosity of the ink is too high, the resistance of the stirring plate during the movement is large, and the rotation angle of the stirring plate fixedly mounted on the rotating shaft 714 is also large; if the viscosity of the ink is too low, the resistance of the stirring plate during movement is small, and the rotation angle of the stirring plate and the rotating shaft 714 is small. The invention judges the viscosity change of the ink in the ink supply bin 51 through the rotation angle change of the rotating shaft 714, avoids the waste of printing raw materials caused by manual direct trial printing observation of printed matters, and reduces the printing cost. The invention can measure the viscosity change of the printing ink in real time during printing, avoids manual observation, reduces the labor intensity of workers, improves the efficiency, and avoids the waste of printing raw materials caused by the fact that the workers do not observe and adjust in time.
As a further scheme of the present invention, the control mechanism 7 further comprises an adjusting unit 72, wherein the adjusting unit 72 is used for adjusting the flow rate of water entering the cooling bin from the water storage bin 6; the adjusting unit 72 includes a cam 721 fixedly installed on the rotating shaft 714, the cam 721 has two protrusions 722 symmetrical to the axis of the rotating shaft 714, a clamping plate 723 is further slidably installed on the wall of the cooling chamber, a clamping portion 724 is fixedly installed on the clamping plate 723, and the clamping portion 724 changes the pipe diameter of the first communicating pipe 53 by clamping the first communicating pipe 53.
The present invention can adjust the temperature of the ink in the ink supply reservoir 51 by controlling the flow of water through the cooling reservoir. As shown in fig. 7 and 8, when the present invention is in operation, if the viscosity of the ink is too high, the rotation angle of the rotating shaft 714 is large, the rotation angle of the cam 721 fixed to the rotating shaft 714 is also large, and the displacement distance of the convex part 722 of the cam 721 upwards jacking up the clamping plate 723 is also large, because the clamping part 724 on the clamping plate 723 clamps and changes the pipe diameter of the first communicating pipe 53, at this time, the reduction of the pipe diameter of the first communicating pipe 53 is large, and the flow rate of the passing water is reduced, so the cooling effect of the cooling chamber 52 is reduced, the temperature of the ink is increased, and the viscosity is reduced; similarly, when the viscosity of the ink is too low, the rotation angle of the cam 721 is reduced, the displacement distance of the boss 722 for lifting up the clamping plate 723 is also reduced, the pipe diameter of the first communication pipe 53 is increased, and the flow rate of the passing water is increased, so that the cooling effect of the cooling chamber 52 is improved, the temperature of the ink is reduced, and the viscosity is increased. The invention can adjust the temperature of the printing ink in real time according to the viscosity of the printing ink and adjust the viscosity of the printing ink. The flow of water entering the cooling bin from the water storage bin 6 is controlled by changing the pipe diameter of the first communicating pipe 53, when the viscosity of the ink is higher, the flow of the water is reduced, the cooling effect of the cooling bin is reduced, the temperature of the ink is increased, the viscosity is reduced, and the phenomenon that the ink is not smoothly distributed and is not uniform on a printing surface due to too high viscosity of the ink is avoided; when the viscosity of the ink is smaller, the flow of water is increased, the cooling effect of the cooling bin is improved, the temperature of the ink is reduced, the viscosity is increased, the phenomena that the print cannot be accurately transferred due to too small viscosity of the ink, the image-text layers are unclear, the ink color is not full, the color is not bright and the quality of a printed product is reduced are avoided.
As a further scheme of the present invention, the cooling bin 52 is disposed obliquely, and one end of the cooling bin close to the first communicating pipe 53 is higher than one end close to the second communicating pipe 54. The purpose of this arrangement is to facilitate the flow of water within the cooling chamber and to enhance the cooling effect of the cooling chamber 52.
As a further aspect of the present invention, the first communication pipe 53 is a rubber pipe. The purpose of this arrangement is to make the first communication pipe 53 elastic.
As a further scheme of the invention, the printing plate roller 1 is mounted on a roller changing mechanism 8, the roller changing mechanism 8 comprises a sun gear 81 which is rotatably mounted on a rack, planetary gears 82 are arranged at intervals along the axial outer side of the sun gear 81 and are externally meshed with the sun gear 81, and the planetary gears 82 are connected through a planetary carrier 83; the printing plate roller 1 and the planet roller are coaxially arranged; a gear ring 84 is arranged outside the planetary gear 82, and the gear ring 84 is internally meshed with the planetary gear 82; a switching cylinder 85 is further fixedly arranged on the rack, a switching block 86 is fixedly mounted on the switching cylinder 85, and the switching block 86 is vertically and slidably mounted on the rack; the frame is also provided with a first fixed block 87 for fixing the planet carrier 83 and a second fixed block 88 for fixing the gear ring 84 in a sliding manner, and the switching block 86 drives the first fixed block 87 and the second fixed block 88 to fix the planet carrier 83 and the gear ring 84 respectively.
The invention can also automatically change the printing plate roller 1, thereby improving the printing efficiency. As shown in fig. 1 and 3, in the present invention, at the time of printing, the switching cylinder 85 is extended, the switching block 86 drives the first fixed block 87 to move and clamp the carrier 83, and the printing plate roller 1 starts to rotate and print; when the printing plate roller 1 is changed, the switching cylinder 85 is contracted, the first fixing block 87 is unlocked, the switching block 86 drives the second fixing block 88 to fix the ring gear 84, and at this time, the printing plate roller 1 revolves while rotating, and the roller change is started. The automatic roller changing machine can automatically change rollers without manual replacement, reduces the labor intensity of workers and improves the printing efficiency.
As a further scheme of the invention, a flushing mechanism for cleaning the replaced printing plate roller 1 is arranged in the water storage bin 6; the upper end of the water storage bin 6 is in a bell mouth shape; the flushing mechanism comprises a squeezing plate 61 vertically and slidably mounted in the water storage bin 6, the squeezing plate 61 is fixedly connected with a driving plate 63 arranged below the water storage bin 6 through a connecting rod 62, and the driving plate 63 is positioned on the revolution path of the printing plate roller 1; the connecting rod 62 penetrates through the bottom surface of the water storage bin 6, and a first compression spring 64 is arranged between the extrusion plate 61 and the bottom surface of the water storage bin 6; the bottom end of the water storage bin 6 is provided with a washing head 65, and the washing head 65 points to the replaced printing plate roller 1; the squeezing plate 61 squeezes water in the water storage bin 6 to wash the replaced printing plate roller 1 through the washing head 65.
The invention can also clean the changed printing plate roller 1 while changing the roller, thereby avoiding manual cleaning. As shown in fig. 7, in the present invention, when the roll is changed, the printing plate roll 1 revolves while rotating, the printing plate roll 1 presses the driving plate 63 during the revolution, the driving plate 63 moves upward to drive the pressing plate 61 to move upward through the connecting rod 62, the first compression spring 64 is stretched, the pressing plate 61 moves upward because the upper end of the water storage tank 6 is a bell mouth, and water enters between the pressing plate 61 and the bottom surface of the water storage tank 6. The rotation of the printing plate roller 1 continues, the pressing plate 61 presses the water therebelow under the restoring force of the first compression spring 64, the water is squeezed out from the washing head 65, and the printing plate roller 1 is cleaned, and since the printing plate roller 1 rotates and revolves simultaneously, the washing head 65 can clean the entire circumferential direction of the printing plate roller 1. And (5) circulating and reciprocating. According to the invention, water in the water storage bin 6 is not only supplied to the dampening mechanism 4 for dampening, but also used for cooling ink in the ink supply bin 51, and can be used for cleaning the replaced printing plate roller 1 in time, so that the influence of solidification of the ink on the printing plate roller 1 on next printing is avoided, equipment is prevented from being damaged, the cost is saved, and the environment is protected.
In a further aspect of the present invention, a recovery unit for recovering the ink and the water under flushing is provided below the flushing unit. Because the oil and the water are not compatible, the water and the printing ink recovered by the recovery mechanism can be separated and reused, so that the environment is protected, and the cost is saved.
The invention also provides a green environment-friendly printing method, which mainly comprises the following steps:
s1: when printing, water is filled in the water storage bin 6, the planet carrier 83 is fixed by the first fixing block 87, the water in the water storage bin 6 enters the dampening mechanism 4 through the cooling bin in the ink supply mechanism 5, the motor is started, the dampening mechanism 4 damps the printing plate roller 1, the ink supply mechanism 5 supplies ink to the printing plate roller 1 after dampening, and the printing plate roller 1 rotates to imprint printing ink on paper between the rubber roller 2 and the embossing roller 3 through the rubber roller 2;
s2: during roll changing, the first fixing block 87 is unlocked, the second fixing block 88 fixes the gear ring 84, the printing plate roll 1 starts to be switched, and the washing mechanism washes the changed printing plate roll 1 in the switching process;
s3: after the roller changing is finished, the second fixing block 88 is unlocked, the planet carrier 83 is fixed by the first fixing block 87, and the printing is continued and the cycle is repeated.
Claims (7)
1. The green environment-friendly printing device is characterized in that: the automatic dampening device comprises a printing plate roller (1) installed on a rack, wherein a dampening mechanism (4) used for dampening the printing plate roller (1) and an ink supply mechanism (5) used for supplying ink to the printing plate roller (1) are arranged on the printing plate roller (1), the dampening mechanism (4) is connected with a water storage bin (6) fixed on the rack, the ink supply mechanism (5) comprises an ink supply bin (51) and a cooling bin, the ink supply bin (51) is located in the cooling bin, two ends of the cooling bin are respectively communicated with the water storage bin (6) and the dampening mechanism (4) through a first communicating pipe (53) and a second communicating pipe (54), a control mechanism is further arranged on the cooling bin, and the control mechanism (7) controls the flow of water entering the cooling bin from the water storage bin (6) according to the viscosity of ink in the ink supply bin (51);
the control mechanism (7) comprises a measuring unit (71) for measuring the viscosity of the ink in the ink supply bin (51), the measuring unit (71) comprises a screw (711) which is rotatably installed in the ink supply bin (51) along the length direction of the ink supply bin (51), the screw (711) is externally connected with a power supply, a threaded sleeve (712) is in threaded connection with the screw (711), and a stirring plate (713) for stirring the ink is rotatably installed at the lower end of the threaded sleeve (712); the stirring plate (713) is fixedly arranged on a rotating shaft (714), and the rotating shaft (714) is rotatably arranged on the lower end face of the threaded sleeve (712);
the control mechanism (7) further comprises an adjusting unit (72), and the adjusting unit (72) is used for adjusting the flow of water entering the cooling bin from the water storage bin (6); the adjusting unit (72) comprises a cam (721) fixedly mounted on the rotating shaft (714), the cam (721) is provided with two protrusions (722) which are symmetrical to the axis of the rotating shaft (714), the wall of the cooling bin is further provided with a clamping plate (723) in a sliding manner, the clamping plate (723) is fixedly provided with a clamping portion (724), and the clamping portion (724) changes the pipe diameter of the first communicating pipe (53) by clamping the first communicating pipe (53).
2. The green environmental protection type printing apparatus according to claim 1, wherein: the cooling bin (52) is obliquely arranged, and one end, close to the first communicating pipe (53), in the cooling bin is higher than one end, close to the second communicating pipe (54).
3. The green environmental protection type printing device according to claim 2, wherein: the first communicating pipe (53) is a rubber pipeline.
4. The green environmental protection type printing apparatus according to claim 3, wherein: the printing plate roller (1) is arranged on a roller changing mechanism (8), the roller changing mechanism (8) comprises a sun wheel (81) which is rotatably arranged on a rack, planetary wheels (82) are arranged at intervals along the axial outer side of the sun wheel (81) and are meshed with the sun wheel (81), and the planetary wheels (82) are connected through a planetary carrier (83); the printing plate roller (1) and the planetary roller are coaxially arranged; a gear ring (84) is arranged on the outer side of the planetary gear (82), and the gear ring (84) is internally meshed with the planetary gear (82); a switching cylinder (85) is also fixedly arranged on the rack, a switching block (86) is fixedly arranged on the switching cylinder (85), and the switching block (86) is vertically and slidably arranged on the rack; the rack is also provided with a first fixing block (87) for fixing the planet carrier (83) and a second fixing block (88) for fixing the gear ring (84) in a sliding manner, and the switching block (86) drives the first fixing block (87) and the second fixing block (88) to fix the planet carrier (83) and the gear ring (84) respectively.
5. The green environmental protection type printing device according to claim 4, wherein: a flushing mechanism for cleaning the replaced printing plate roller (1) is arranged in the water storage bin (6); the upper end of the water storage bin (6) is in a bell mouth shape; the flushing mechanism comprises a squeezing plate (61) vertically and slidably mounted in the water storage bin (6), the squeezing plate (61) is fixedly connected with a driving plate (63) arranged below the water storage bin (6) through a connecting rod (62), and the driving plate (63) is positioned on the revolution path of the printing plate roller (1); the connecting rod (62) penetrates through the bottom surface of the water storage bin (6), and a first compression spring (64) is arranged between the extrusion plate (61) and the bottom surface of the water storage bin (6); a washing head (65) is arranged at the bottom end of the water storage bin (6), and the washing head (65) points to the replaced printing plate roller (1); the squeezing plate (61) squeezes water in the water storage bin (6) to wash the replaced printing plate roller (1) through the washing head (65).
6. The green environmental protection type printing apparatus according to claim 5, wherein: and a recovery mechanism for recovering the ink and the water which are washed is arranged below the washing mechanism.
7. An environment-friendly printing method, which is suitable for the printing device of any one of claims 5 to 6, and is characterized in that: the method mainly comprises the following steps:
s1: when printing, water is filled in a water storage bin (6), a planet carrier (83) is fixed by a first fixing block (87), the water in the water storage bin (6) enters a dampening mechanism (4) through a cooling bin in an ink supply mechanism (5), a motor is started, the dampening mechanism (4) damps a printing plate roller (1), the ink supply mechanism (5) supplies ink to the printing plate roller (1) after dampening, and the printing plate roller (1) rotates to imprint ink on paper between a rubber roller (2) and a stamping roller (3) through the rubber roller (2);
s2: when the roller is changed, the first fixing block (87) is unlocked, the second fixing block (88) is used for fixing the gear ring (84), the printing plate roller (1) starts to be switched, and the washing mechanism washes the changed printing plate roller (1) in the switching process;
s3: and after the roller changing is finished, the second fixing block (88) is unlocked, the planet carrier (83) is fixed by the first fixing block (87), and the printing is continued and the cycle is repeated.
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| CN114834151B (en) * | 2022-05-23 | 2023-10-20 | 浙江卡游科技有限公司 | Pressure-sensitive adhesive printing device |
| CN115352179B (en) * | 2022-08-17 | 2024-03-19 | 浙江创丰环保科技有限公司 | Continuous high-efficiency color steel plate transfer printing equipment |
| CN115257150B (en) * | 2022-08-31 | 2023-06-16 | 浙江中特机械科技股份有限公司 | Multifunctional machine set type flexographic printing machine |
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