A high-fidelity color printing device and process flow

Abstract

The present application relates to a high-fidelity color printing device and a process flow, belonging to the technical field of printing devices. It includes a machine body for printing on a printing substrate. An inlet and an outlet are provided on the machine body. A conveyor belt is lapped at the outlet of the machine body. A carrier table is provided at the transmission end of the conveyor belt. Baffles are provided on both sides of the conveyor belt. The baffles are arranged along the length direction of the conveyor belt. The inside of the baffles is hollow. A first air outlet hole is opened on the side wall of the baffle facing the conveyor belt. The first air outlet hole is inclined downward. A first air supply pipe is connected to the baffle. One end of the first air supply pipe is communicated with the inside of the baffle, and the other end is connected to an air pump. The present application has the effects of reducing the phenomenon of smudging on the back of the printing substrate and strengthening the management of semi-finished products after printing.

Description

Technical Field

[0001] The present application relates to the technical field of printing equipment, and in particular to a high-fidelity color printing equipment and process flow. Background Art

[0002] People have found that the color gamut of printing with red, green and blue inks is small, mainly because the color saturation of secondary colors is low. When the opposite color inks of red, green and blue, namely cyan, magenta and yellow inks, are used, a larger color gamut can be obtained. Therefore, this color becomes a plate-making printing color. For decades, CMYK four-color printing has become a treasure in the printing industry and is often used. However, with the rapid development of science and technology, personalized production methods and products with higher added value have become fashionable. In the process of enjoying more and more personalized services in other industries, customers of printing plants will also ask for personalized services from printing plants. However, the traditional four-color printing field is still like an iron barrel, and no personalized changes have been seen. Faced with the limitations of the color gamut of four-color printing, since the existing paper and ink cannot fully reproduce the color gamut of natural color originals, in order to improve the saturation of certain colors on the printed matter, by printing pure and bright red, green, blue and purple on the basis of C, M, Y and K four colors, the printed image can produce a more natural contrast and a fresher sense of color. This printing method is called high-fidelity printing. For example, when printing a picture with strawberries, you can add red and green plates to make the bright red of the strawberry fruit and the green of the leaves appear purer and more realistic, and the whole picture appears vivid and bright.

[0003] During the entire printing process, the substrates are stacked together after the initial printing to facilitate the subsequent remaining printing processes. The present application believes that adjacent substrates are stacked together, resulting in a defect in which the back of the substrates are stained. Summary of the invention

[0004] In order to reduce the phenomenon of dirt on the back of the substrate and strengthen the management of semi-finished products after printing, the present application provides a high-fidelity color printing equipment and process flow.

[0005] In a first aspect, the present application provides a high-fidelity color printing device, which adopts the following technical solution:

[0006] A high-fidelity color printing device comprises a body for printing substrates, wherein a feed port and a discharge port are arranged on the body, a conveyor belt is overlapped at the discharge port of the body, a carrying platform is arranged at the conveying end of the conveyor belt, baffles are arranged on both sides of the conveyor belt, the baffles are arranged along the conveying length direction, the baffles are hollow inside, a first air outlet is opened on the side wall of the baffle facing the conveyor belt, the first air outlet is opened obliquely downward, a first air supply pipe is connected to the baffle, one end of the first air supply pipe is connected to the inside of the baffle, and the other end is connected to an air pump.

[0007] By adopting the above technical solution, the machine body prints the substrate, and the printed substrate is moved to the conveyor belt, and the conveyor belt conveys the substrate to the carrier. During the conveying process of the substrate, the air pump supplies air to the inside of the baffle through the first air supply pipe, and the gas is blown onto the substrate through the first air outlet, thereby accelerating the drying speed of the semi-finished substrate. At the same time, the downward blowing of the gas cooperates with the friction between the substrate and the conveyor belt, which can reduce the phenomenon of misalignment of the substrate conveying position.

[0008] Optionally, a powder spraying mechanism is arranged next to the supporting platform, and the powder spraying assembly includes a supporting plate, a second air supply pipe and an opening assembly, the supporting plate is located on the side of the supporting platform away from the conveyor belt, the supporting plate abuts against the side wall of the supporting platform, the interior of the supporting plate is hollow, and a second air outlet is opened on the side wall of the supporting plate facing the supporting platform, one end of the second air supply pipe is connected to the interior of the supporting plate, and the other end is connected to the air pump, and the opening assembly is used to control whether the second air outlet is blocked; a first hydraulic cylinder for lifting the supporting platform is arranged at the bottom of the supporting platform.

[0009] By adopting the above technical solution, the first hydraulic cylinder controls the lifting and lowering of the carrier platform, so that more semi-finished substrates can be stacked on the carrier platform. The existence of the carrier plate limits the substrates conveyed by the conveyor belt. Powder is added inside the carrier plate, and the air pump sprays powder on the semi-finished substrates on the carrier platform through the second air supply pipe and the second air outlet. Large-particle powder is used to help separate substrates, such as paper, thereby allowing more oxygen to enter and facilitate the drying of the substrates.

[0010] Optionally, a stirring assembly is provided on the supporting plate, and the stirring assembly includes a driving motor, a stirring rod and a stirring blade. The driving motor is vertically fixed on the top of the supporting plate, one end of the stirring rod is fixedly connected to the rotating shaft of the driving motor, and the other end penetrates through the top of the supporting plate and penetrates deep into the interior of the supporting plate and is fixedly connected to the stirring blade.

[0011] By adopting the above technical solution, the stirring component can continuously stir the powder inside the carrier plate to prevent the powder from being deposited at the bottom of the carrier plate, making it easier to spray the powder on the substrate.

[0012] Optionally, the stirring rod and the stirring blade are both hollow inside, and the internal space of the stirring rod is connected with the internal space of the stirring blade, a third air outlet is provided on the stirring blade, an air inlet is provided on the stirring rod, an inflation ring is ringed on the stirring rod and the inflation ring covers the air inlet, the inflation ring is rotatably connected to the stirring rod, the inflation ring is hollow inside and has inflation holes on the inner wall, one end of the second air supply pipe is connected to the interior of the inflation ring, and the other end is connected to the air pump.

[0013] By adopting the above technical scheme, the air pump is fully utilized, and the gas is passed through the stirring rod to the stirring blade through the second air supply pipe, and finally ejected from the third air outlet, which not only provides air pressure and gas for spraying the powder inside the carrier plate, but also disturbs the powder inside the carrier plate, and cooperates with the stirring blade to achieve double disturbance; the existence of the inflation ring allows the gas to be intermittently filled into the carrier plate, which on the one hand cooperates with the intermittent opening characteristics of the opening component, and on the other hand cooperates with the characteristics of the printing material falling onto the carrier platform in an orderly manner.

[0014] Optionally, the opening assembly includes a cylinder and a closing plate, the cylinder is vertically fixed on the top of the supporting plate, the piston rod of the cylinder passes through the top wall of the supporting plate and is fixedly connected to the closing plate located inside the supporting plate, and the closing plate is close to the inner wall of the supporting plate where the second air outlet is opened.

[0015] By adopting the above technical solution, the cylinder is started, and the piston rod drives the closing plate to move in the vertical direction, so that the second air outlet is in an open or blocked state.

[0016] Optionally, the supporting platform is provided with a first vertical plate which is slidably arranged and a second vertical plate which is fixedly arranged, the first vertical plate slides in a direction approaching or away from the second vertical plate, and the connecting line between the first vertical plate and the second vertical plate is perpendicular to the conveying direction of the substrate by the conveyor belt; a clearance hole is provided on the supporting platform, the clearance hole is provided along the conveying direction of the substrate by the conveyor belt, and the clearance hole opens through the vertical side wall of the supporting platform close to one end of the supporting plate.

[0017] By adopting the above technical solution, the first vertical plate, the second vertical plate and the supporting plate are limited in three directions within the same horizontal plane of the supporting platform, which has a limiting effect on the substrates on the supporting platform, ensuring the neatness of the substrates after stacking. The opening of the clearance holes makes it easier for subsequent equipment to take away the substrates stacked on the supporting platform, such as a forklift.

[0018] Optionally, a second hydraulic cylinder and a third hydraulic cylinder are arranged under the supporting platform. The second hydraulic cylinder and the third hydraulic cylinder are distributed on both sides of the first hydraulic cylinder and are used to control the first hydraulic cylinder to swing, and the swinging direction swings along the direction of the line connecting the first vertical plate and the second vertical plate; the top of the first hydraulic cylinder is fixedly connected to the bottom of the supporting platform.

[0019] By adopting the above technical solution, the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are used to realize the swinging of the supporting platform, and the first vertical plate and the second vertical plate clamp the stacked substrates on the supporting platform. At this time, the stacked substrates are tilted as a whole, which facilitates the powder on the substrates to slide off.

[0020] Optionally, a scraper is slidably arranged on the first vertical plate, and the scraper moves in a direction close to or away from the supporting platform. A long hole is opened on the first vertical plate, and the length direction of the long hole is opened along the moving direction of the scraper. One end of the scraper is located on the side of the first vertical plate away from the second vertical plate, and the other end of the scraper passes through the long hole and protrudes out of the first vertical plate.

[0021] By adopting the above technical solution, the moving scraper has the effect of moving the edges of the stacked substrates, and cooperates with the substrates in an inclined state to make the powder on the substrates slide off better.

[0022] Optionally, the end of the scraper facing the substrate is blade-shaped, the scraper is hollow inside, a fourth air outlet is opened on the scraper, the fourth air outlet is located at the blade-shaped end of the scraper, and a third air supply pipe is connected between the scraper and the air pump.

[0023] By adopting the above technical solution, when the scraper moves the edge of the substrate, gaps are created between adjacent substrates, and air is blown into the gaps to further cause the powder on the substrate to fall off.

[0024] In a second aspect, the present application provides a process flow for applying a high-fidelity color printing device, using the following technical solution:

[0025] A process flow for applying a high-fidelity color printing device includes the following steps:

[0026] S1. Place the substrate into the machine and start the air pump;

[0027] S2, after the substrate is conveyed to the carrier by the conveyor belt, the powder spraying mechanism is started;

[0028] S3, moving the first vertical plate, and the first vertical plate cooperates with the second vertical plate to clamp the substrate on the carrying platform;

[0029] S4, as the substrates are stacked upward, the first hydraulic cylinder drives the load-bearing platform to descend;

[0030] S5, starting the second hydraulic cylinder and the third hydraulic cylinder to tilt the entire load platform, and moving the scraper to move the edge of the stacked load;

[0031] S6. After the scraper has finished moving, the first hydraulic cylinder returns to a vertical state.

[0032] By adopting the above technical solution, the substrate is air-dried before arriving at the carrier. When the substrate arrives at the carrier and is stacked, the powder spraying mechanism sprays particles between adjacent substrates so that there are gaps between adjacent substrates to facilitate oxygen entry, so that the substrate can be dried as quickly as possible, thereby reducing the phenomenon of dirt on the back of the substrate and enhancing the management of semi-finished products after printing.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. The setting of the baffle and the air pump enables the first drying of the printing substrate before it reaches the carrying platform, reducing the phenomenon of smudging on the back of the printing substrate when the printing substrates are stacked;

[0035] 2. The powder spraying mechanism sprays particles between adjacent printing substrates, creating a gap between adjacent printing substrates to facilitate the entry of oxygen and enabling the printing substrates to dry as soon as possible, reducing the phenomenon of smudging on the back of the printing substrates;

[0036] 3. The scraper cooperates with the air pump to blow air between the stacked printing substrates, not only facilitating the blowing off of the powder between the printing substrates but also performing a second drying operation on the printing substrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a front structural schematic diagram of an embodiment of the present application;

[0038] Figure 2 is a back structural schematic diagram of an embodiment of the present application

[0039] Figure 3 is Figure 1 a partial enlarged schematic diagram of part A in

[0040] Figure 4 is a partial structural sectional view highlighting the internal structure of the carrier plate;

[0041] Figure 5 is Figure 4 a partial enlarged schematic diagram of part B in

[0042] Figure 6 is Figure 4 a partial enlarged schematic diagram of part C in

[0043] Description of the reference numerals: 1, body; 11, feed inlet; 12, discharge outlet; 13, conveyor belt; 2, baffle; 21, first air outlet hole; 3, carrying platform; 31, first hydraulic cylinder; 32, second hydraulic cylinder; 33, third hydraulic cylinder; 34, first vertical plate; 341, long strip hole; 35, second vertical plate; 36, relief hole; 4, powder spraying mechanism; 41, carrier plate; 411, second air outlet hole; 42, second air delivery pipe; 43, opening component; 431, closing plate; 432, cylinder; 5, air pump; 51, first air delivery pipe; 6, stirring component; 61, drive motor; 62, stirring rod; 621, air inlet hole; 63, stirring blade; 631, third air outlet hole; 7, inflation ring; 71, inflation hole; 8, scraper; 81, fourth air outlet hole; 82, third air delivery pipe; 83, servo motor; 84, screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The following will further elaborate on this application in conjunction with the accompanying drawings. Figures 1-6 A further detailed description of this application will be given below.

[0045] An embodiment of this application discloses a high-fidelity color printing device.

[0046] Referring to Figure 1 and Figure 2 , a high-fidelity color printing device includes a machine body 1. An inlet 11 and an outlet 12 are provided on the machine body 1. A conveyor belt 13 and an air pump 5 are arranged on one side of the outlet 12 of the machine body 1. A first air supply pipe 51 is arranged between the conveyor belt 13 and the air pump 5. The conveyor belt 13 transports the printing substrate. During transportation, the conveyor belt 13 cooperates with the air pump 5 and the first air supply pipe 51 to perform a drying process on the printing substrate, so that the printing substrate can be dried as soon as possible, reducing the phenomenon that the back sides of adjacent printing substrates are smeared when stacked.

[0047] Referring to Figure 1 and Figure 2 , the conveyor belt 13 is inclined, and the inclination direction is inclined downward along the direction away from the machine body 1. Two baffles 2 are arranged on the conveyor belt 13. The baffles 2 are arranged along the length direction of the conveyor belt 13. Along the direction perpendicular to the conveyance direction of the printing substrate, the baffles 2 are distributed on both sides of the self-carrier surface of the conveyor belt 13. The baffles 2 are hollow. A first air outlet hole 21 is opened on the side wall of the baffle 2 facing the self-carrier surface of the conveyor belt 13. The first air outlet hole 21 is inclined downward along the direction close to the conveyor belt 13. One end of the first air supply pipe 51 is connected to the air pump 5, and the other end is communicated with the inside of the baffle 2.

[0048] Referring to Figure 1 and Figure 2 , a carrier platform 3 is arranged at the conveying end of the conveyor belt 13. A first hydraulic cylinder 31, a second hydraulic cylinder 32 and a third hydraulic cylinder 33 are arranged at the bottom of the carrier platform 3. Along the direction perpendicular to the conveyance direction of the printing substrate, the second hydraulic cylinder 32 and the third hydraulic cylinder 33 are distributed on both sides of the first hydraulic cylinder 31. Below the carrier platform 3 is a cushion table or the factory floor. The piston end of the first hydraulic cylinder 31 is fixedly connected to the bottom surface of the carrier platform 3. The body of the first hydraulic cylinder 31 is hinged to the factory floor, and the hinge axis is arranged along the conveyance direction of the load; the piston ends of the second hydraulic cylinder 32 and the third hydraulic cylinder 33 are both hinged to the outer wall of the body of the first hydraulic cylinder 31, and the hinge axis is arranged along the conveyance direction of the load. The body of the second hydraulic cylinder 32 and the body of the third hydraulic cylinder 33 are both hinged to the factory floor, and the hinge axis is arranged along the conveyance direction of the load.

[0049] Referring to Figure 1, a clearance hole 36 is provided on the carrying platform 3, and the length direction of the clearance hole 36 is provided along the conveying direction of the load, and the end away from the conveyor belt 13 opens the vertical side wall of the carrying platform 3. A first vertical plate 34 and a second vertical plate 35 are provided on the top of the carrying platform 3, and along the vertical conveying direction of the load, the first vertical plate 34 and the second vertical plate 35 are distributed at the top edge of the carrying platform 3, and the second vertical plate 35 is fixedly connected to the carrying platform 3, and the first vertical plate 34 is slidably connected to the carrying platform 3, and the sliding direction slides in the direction of approaching or moving away from the second vertical plate 35. The method adopted in this embodiment is to set a driving electric cylinder on the side of the first vertical plate 34 away from the second vertical plate 35, and the driving electric cylinder is fixed to the top of the carrying platform 3, so as to realize the horizontal sliding of the first vertical plate 34 relative to the top of the carrying platform 3.

[0050] refer to Figure 1 and Figure 3 , a long hole 341 is provided on the first vertical plate 34, and the long hole 341 is provided in the vertical direction. A scraper 8 is provided on the first vertical plate 34, and one end of the scraper 8 is located on the side of the first vertical plate 34 away from the second vertical plate 35, and the other end of the scraper 8 is blade-shaped and protrudes from the first vertical plate 34 after passing through the long hole 341. The scraper 8 is C-shaped in this embodiment, and two parallel strips are provided corresponding to the long holes 341. At this time, one end of the scraper 8 passes through one of the long holes 341, and the other end is located on the side of the first vertical plate 34 away from the second vertical plate 35 and crosses to the other long hole 341 and passes through the long hole 341 there. A servo motor 83 is fixed on the first vertical plate 34, and a screw 84 is fixed on the end of the rotating shaft of the servo motor 83, and the screw 84 passes through the scraper 8, and the screw 84 is fixedly connected to the scraper 8, and the outer wall of the scraper 8 located in the long hole 341 abuts against the inner wall of the long hole 341.

[0051] refer to Figure 1 and Figure 3 The scraper 8 is hollow inside, and a fourth air outlet 81 is provided at the blade-shaped end of the scraper 8. A third air supply pipe 82 is connected between the scraper 8 and the air pump 5. When the first vertical plate 34 is in a vertical state, the blade of the scraper 8 is in a horizontal state.

[0052] refer to Figure 1 and Figure 4A powder spraying mechanism 4 is provided on the side of the carrying platform 3 away from the conveyor belt 13, and the powder spraying mechanism 4 includes a carrying plate 41, a second air supply pipe 42 and an opening component 43. The carrying plate 41 is fixedly connected to the factory floor, and the side wall of the carrying plate 41 abuts against the vertical side wall of the carrying platform 3. The interior of the carrying plate 41 is hollow, and a second air outlet 411 is provided on the side wall of the carrying plate 41 facing the carrying platform 3. The opening component 43 includes a cylinder 432 and a closing plate 431. The cylinder 432 is vertically fixed on the top of the carrying plate 41, and the closing plate 431 is located inside the carrying plate 41. The piston rod of the cylinder 432 penetrates the top wall of the carrying plate 41 and is fixedly connected to the closing plate 431. The closing plate 431 is close to the inner wall of the carrying plate 41, and the closing plate 431 blocks the second air outlet 411.

[0053] refer to Figure 4 and Figure 5 A stirring assembly 6 is provided on the supporting plate 41, and the stirring assembly 6 includes a driving motor 61, a stirring rod 62 and a stirring blade 63. The driving motor 61 is vertically fixed on the top of the supporting plate 41, and the stirring blade 63 is located inside the supporting plate 41. One end of the stirring rod 62 is fixedly connected to the rotating shaft of the driving motor 61, and the other end passes through the top wall of the supporting plate 41 and is fixedly connected to the stirring blade 63. A third air outlet 631 is opened on the top surface of the stirring blade 63.

[0054] refer to Figure 4 and Figure 6 The stirring rod 62 is surrounded by an air ring 7, and an air inlet hole 621 is provided on the stirring rod 62. The air inlet hole 621 is blocked by the air ring 7. An air inlet hole 71 is provided on the inner wall of the air ring 7. The stirring rod 62 rotates relative to the air inlet ring 7. During the rotation of the stirring rod 62, the air inlet hole 71 and the air inlet hole 621 overlap. The air ring 7, the stirring rod 62 and the stirring blade 63 are all hollow inside. One end of the second air supply pipe 42 is connected to the air pump 5, and the other end is connected to the inside of the air ring 7.

[0055] The embodiments of the present application also disclose a high-fidelity color printing device and process flow.

[0056] The following steps are involved:

[0057] S1, put the printing material into the machine body 1 from the feed port 11, send it out from the discharge port 12 after the first printing, and then fall on the conveyor belt 13, start the air pump 5, and the first air outlet 21 sprays gas to air-dry the printing material;

[0058] S2, after the substrate is conveyed to the carrier platform 3 by the conveyor belt 13, the powder spraying mechanism 4 is started, and the powder spraying mechanism 4 sprays powder onto the substrate, and subsequent substrates are stacked, so that particles exist between adjacent substrates, thereby increasing the gap between adjacent substrates;

[0059] S3, moving the first vertical plate 34, and the first vertical plate 34 cooperates with the second vertical plate 35 to clamp the substrate on the carrying platform 3;

[0060] S4, as the printing substrates are stacked upward, the first hydraulic cylinder 31 drives the carrying platform 3 to descend, so that the carrying plate 41 can always receive the printing substrates moved onto the carrying platform 3, thus limiting the position of the printing substrates;

[0061] S5, start the second hydraulic cylinder 32 and the third hydraulic cylinder 33 to tilt the whole support platform 3, move the scraper 8 to move the edge of the stacked support, and at the same time, the fourth air outlet 81 sprays gas to further dry the substrate and blow off the powder particles between the substrates;

[0062] S6 , after the scraper 8 has finished moving, the first hydraulic cylinder 31 returns to a vertical state, and the first hydraulic cylinder 31 lifts the carrying platform 3 , so that the forklift can take away the substrate on the carrying platform 3 from the clearance hole 36 .

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-fidelity color printing device, comprising a body (1) for printing a substrate, the body (1) being provided with a feed inlet (11) and a discharge outlet (12), Features: A conveyor belt (13) is overlapped at the discharge port (12) of the machine body (1), a carrying platform (3) is arranged at the conveying end of the conveyor belt (13), baffles (2) are arranged on both sides of the conveyor belt (13), the baffles (2) are arranged along the conveying direction, the inside of the baffles (2) is hollow, a first air outlet (21) is opened on the side wall of the baffle (2) facing the conveyor belt (13), the first air outlet (21) is opened obliquely downward, a first air supply pipe (51) is connected to the baffle (2), one end of the first air supply pipe (51) is connected to the inside of the baffle (2), and the other end is connected to the air pump (5); a powder spraying mechanism (4) is arranged next to the carrying platform (3), and the powder spraying mechanism (4) includes a carrying plate (41), a second An air supply pipe (42) and an opening component (43), a bearing plate (41) is located on the side of the bearing platform (3) away from the conveyor belt (13), the bearing plate (41) is in contact with the side wall of the bearing platform (3), the interior of the bearing plate (41) is hollow, a second air outlet (411) is provided on the side wall of the bearing plate (41) facing the bearing platform (3), one end of the second air supply pipe (42) is connected to the interior of the bearing plate (41), and the other end is connected to the air pump (5), and the opening component (43) is used to control whether the second air outlet (411) is blocked; a first hydraulic cylinder (31) for lifting the bearing platform (3) is provided at the bottom of the bearing platform (3); a stirring component (6) is provided on the bearing plate (41), and the stirring component (6) comprises a driving motor (61), a stirring rod (62) and a stirring blade (63), wherein the driving motor (61) is vertically fixed on the top of the supporting plate (41), one end of the stirring rod (62) is fixedly connected to the rotating shaft of the driving motor (61), and the other end penetrates through the top of the supporting plate (41) and penetrates into the interior of the supporting plate (41) and is fixedly connected to the stirring blade (63); the stirring rod (62) and the stirring blade (63) are both hollow inside, and the internal space of the stirring rod (62) is connected to the internal space of the stirring blade (63), a third air outlet (631) is provided on the stirring blade (63), an air inlet (621) is provided on the stirring rod (62), and an inflation ring (7) is sleeved on the stirring rod (62) and The inflation ring (7) blocks the air inlet hole (621), the inflation ring (7) is rotatably connected to the stirring rod (62), the interior of the inflation ring (7) is hollow and an inflation hole (71) is provided on the inner wall, one end of the second air supply pipe (42) is connected to the interior of the inflation ring (7), and the other end is connected to the air pump (5); the opening component (43) comprises a cylinder (432) and a closing plate (431), the cylinder (432) is vertically fixed on the top of the supporting plate (41), the piston rod of the cylinder (432) penetrates the top wall of the supporting plate (41) and is fixedly connected to the closing plate (431) located inside the supporting plate (41), and the closing plate (431) is closely attached to the inner wall of the supporting plate (41) on which the second air outlet hole (411) is provided.

2. A high-fidelity color printing device according to claim 1, Features: The carrier platform (3) is provided with a first vertical plate (34) which is slidably mounted and a second vertical plate (35) which is fixedly mounted. The first vertical plate (34) slides in a direction approaching or moving away from the second vertical plate (35). The connecting line between the first vertical plate (34) and the second vertical plate (35) is perpendicular to the conveying direction of the conveyor belt (13) for the substrate. The carrier platform (3) is provided with a clearance hole (36). The clearance hole (36) is provided along the conveying direction of the conveyor belt (13) for the substrate. The clearance hole (36) opens through the vertical side wall of the carrier platform (3) at one end close to the carrier plate (41).

3. A high-fidelity color printing device according to claim 2, Features: A second hydraulic cylinder (32) and a third hydraulic cylinder (33) are arranged below the bearing platform (3); the second hydraulic cylinder (32) and the third hydraulic cylinder (33) are distributed on both sides of the first hydraulic cylinder (31) and are used to control the first hydraulic cylinder (31) to swing; the swing direction swings along the direction of the line connecting the first vertical plate (34) and the second vertical plate (35); the top of the first hydraulic cylinder (31) is fixedly connected to the bottom of the bearing platform (3).

4. A high-fidelity color printing device according to claim 3, Features: A scraper (8) is slidably arranged on the first vertical plate (34), and the scraper (8) moves in a direction close to or away from the supporting platform (3). A long hole (341) is opened on the first vertical plate (34), and the length direction of the long hole (341) is opened along the moving direction of the scraper (8). One end of the scraper (8) is located on the side of the first vertical plate (34) away from the second vertical plate (35), and the other end of the scraper (8) passes through the long hole (341) and then protrudes out of the first vertical plate (34).

5. A high-fidelity color printing device according to claim 4, Features: The end of the scraper (8) facing the substrate is blade-shaped, the scraper (8) is hollow inside, a fourth air outlet (81) is provided on the scraper (8), and the fourth air outlet (81) is located at the blade-shaped end of the scraper (8), and a third air supply pipe (82) is connected between the scraper (8) and the air pump (5).

6. The process flow of the high-fidelity color printing device according to claim 5, Features: The following steps are involved: S1, placing the printing material into the machine body (1) and starting the air pump (5); S2, after the printing material is conveyed to the carrier platform (3) by the conveyor belt (13), the powder spraying mechanism (4) is started; S3, moving the first vertical plate (34), so that the first vertical plate (34) cooperates with the second vertical plate (35) to clamp the printing material on the carrying platform (3); S4, as the printing substrates are stacked upward, the first hydraulic cylinder (31) drives the carrying platform (3) to descend; S5, starting the second hydraulic cylinder (32) and the third hydraulic cylinder (33) to tilt the entire support platform (3), and moving the scraper (8) to move the edge of the stacked printing substrates; S6. After the scraper (8) has finished moving, the first hydraulic cylinder (31) returns to a vertical state.

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