Printing device and green printing process based on fluorescent anti-counterfeiting ink

Abstract

The invention relates to the field of ink printing, and in particular to a printing device based on fluorescent anti-counterfeiting ink, and also to a green printing process based on fluorescent anti-counterfeiting ink, comprising a conveyor frame, on which a feeding roller and a winding roller for placing bills are arranged, a fixed guide roller is also arranged on the conveyor frame and between the feeding roller and the winding roller, a printing unit and a drying unit are sequentially arranged on the conveyor frame from the feeding roller to the winding roller, a supporting plate is arranged on the conveyor frame, a shell is arranged below the supporting plate, flattening mechanisms are arranged on both sides of the bottom of the shell, and an air suction mechanism is also arranged in the shell. The invention guides the bills through the flattening mechanism, so that the bills are laid flatly on the surface of the supporting platform, thereby causing the bills to be printed intact, and the air suction mechanism absorbs the waste gas generated by the ink, thereby avoiding operating injuries to the human body, thereby achieving both qualified printing of the bills and absorption of the waste gas, ensuring the quality of the bills, and improving the printing effect of the bills.

Description

Technical Field

[0001] The invention relates to the field of ink printing, in particular to a printing device based on fluorescent anti-counterfeiting ink, and also to a green printing process based on fluorescent anti-counterfeiting ink. Background Art

[0002] When printing bills, anti-counterfeiting printing mainly involves spraying ink directly on the relevant area of ​​the bill to be printed, waiting for the ink to dry after coding, and then putting the bill away. Bills are generally packaged in rolls, and the bills need to be unfolded for anti-counterfeiting printing. The unfolded bills are prone to bending under the action of stress, which affects the quality of printing in an uneven state, and easily causes overlapping of printed content and skewed printed patterns, affecting the quality of bills. At the same time, this printing method cannot print continuously and uninterruptedly, and has low work efficiency. In addition, the printed bills are mostly dried naturally, which takes a long time, affecting the subsequent rolling progress, and the existing printing devices often generate and emit a lot of exhaust gas during printing, which will cause certain harm to production personnel if used for a long time.

[0003] The currently disclosed Chinese patent CN201710659605.5 discloses an anti-counterfeiting printing device and method, comprising a printing table, a paper feeding roller is connected to the inlet of the printing table, a first pressure roller is arranged at the inlet end of the printing table, a positioning block is arranged on the right side of the first pressure roller, a screw is arranged on the positioning block, a screw hole corresponding to the screw is arranged on the printing table, a printing press is arranged above the positioning block, a photoelectric sensor is arranged on the right side of the positioning block, a drying chamber is arranged on the right side of the photoelectric sensor, a fan is arranged at the top of the drying chamber, a partition is arranged at the lower end of the fan, a through hole is arranged on the partition, a proofreading chamber is arranged on the right side of the drying chamber, an ultraviolet lamp and a high-speed camera are arranged inside the proofreading chamber, a punching device is arranged on the right side of the proofreading chamber, a second pressure roller is arranged on the right side of the punching device, and a winding roller is connected to the outlet of the printing table.

[0004] According to the above patent, a positioning block is provided on the printing table of the patent to fix the position of the printing paper and improve the printing accuracy of the printing press. At the same time, the fixing block cooperates with the first pressure roller to make the printing paper smoother and not curled. However, the fixing of the printing paper in the patent is easy to damage the printing paper and the positioning block by friction, and the patent does not have the effect of green printing. Therefore, there is a need for a device that can ensure that the printing paper is not damaged, ensure the flatness of the printing paper during printing, and can absorb the exhaust gas. Summary of the invention

[0005] In view of the problems existing in the prior art, a printing device based on fluorescent anti-counterfeiting ink is provided. The present invention guides the bill through a flattening mechanism, prompting the bill to be laid flatly on the surface of a supporting platform, thereby resulting in the bill being printed intact, and absorbs the waste gas generated by the ink through an air suction mechanism to avoid operating injuries to the human body. This not only achieves qualified printing of the bill, but also achieves absorption of the waste gas, thereby ensuring the quality of the bill and improving the printing effect of the bill.

[0006] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0007] The present invention provides a printing device based on fluorescent anti-counterfeiting ink, comprising a conveyor frame, on which a feeding roller and a winding roller for placing bills are arranged, a fixed guide roller is also arranged on the conveyor frame and located between the feeding roller and the winding roller, and a printing unit and a drying unit are sequentially arranged on the conveyor frame from the feeding roller to the winding roller; a supporting plate for supporting the bill is arranged on the conveyor frame and located between two fixed guide rollers, a shell is arranged below the supporting plate, flattening mechanisms for adjusting the degree of adhesion of the bill on the supporting plate are arranged on both sides of the bottom of the shell, and an air suction mechanism for sucking gas generated during ink printing is also arranged in the shell.

[0008] Preferably, the leveling mechanism is provided with two movable guide rollers, which are symmetrically arranged on both sides of the shell, and the axial direction of the movable guide roller is parallel to the axial direction of the fixed guide roller. The bill is in a state of bypassing the movable guide roller, the fixed guide roller, the fixed guide roller and the movable guide roller in sequence. A buffer is provided on each movable guide roller, and the two movable guide rollers can move along the edge direction of the conveying frame. The conveying frame is provided with a movable member for driving the two movable guide rollers to move relative to each other.

[0009] Preferably, a partition is provided in the shell and located in the middle thereof, and a suction area and a blowing area are formed in the shell through the partition, the suction area corresponds to the printing unit, and the blowing area corresponds to the drying unit.

[0010] Preferably, the air suction mechanism is provided with two air grooves, which are symmetrically arranged on both sides of the upper end of the shell, an air duct is connected between the air groove and the air suction area of ​​the shell, and an air suction fan is provided in the air suction area of ​​the shell.

[0011] Preferably, a filter plate is provided in the air suction area of ​​the shell and between the air suction fan and the partition plate, and a feeding port is provided on the shell and at a portion corresponding to the air suction area.

[0012] Preferably, a connecting pipe connecting the air suction area and the air blowing area is provided at the bottom of the shell, and a heating wire is provided in the air blowing area of ​​the shell.

[0013] Preferably, a plurality of air holes are evenly formed on the supporting plate.

[0014] Preferably, the buffer is provided with a rectangular frame, the end of the movable guide roller is arranged in the rectangular frame, the end axis of the movable guide roller is connected to a slider, the slider can move in the rectangular frame, both ends of the slider have guide rods extending outward through the rectangular frame, the rectangular frame is provided with a guide opening for the guide rod to pass through, and buffer springs mounted on the guide rods are provided between both sides of the slider and the rectangular frame.

[0015] Preferably, the movable part is provided with a guide rail, which has two guide rails, and the two guide rails are fixedly arranged on the conveying frame in parallel with each other. The rectangular frame is slidably arranged between the two guide rails, and a track groove cooperating with the guide rail is opened on the rectangular frame. A bidirectional screw drive is provided on the conveying frame and between the two corresponding rectangular frames, and a threaded sleeve is connected between the two threaded segments on the bidirectional screw drive and the corresponding rectangular frames.

[0016] The present invention also provides a green printing process based on fluorescent anti-counterfeiting ink, comprising the following steps:

[0017] S1, the two movable guide rollers are driven by the moving parts to move relative to each other, so that the bills are laid flat on the supporting plate;

[0018] S2, the reel reels up the bill;

[0019] S3, the printing unit prints fluorescent anti-counterfeiting ink on the bill;

[0020] S4, absorbing the gas printed by the ink into the shell through the suction mechanism;

[0021] S5, the drying unit dries the bill.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention guides the bill through the flattening mechanism, so that the bill is laid flat on the surface of the supporting platform, so that the bill is printed intact, and the exhaust gas generated by the ink is absorbed by the suction mechanism to avoid operating injuries to the human body. It not only achieves qualified printing of the bill, but also realizes the absorption of the exhaust gas, ensures the quality of the bill, and improves the printing effect of the bill.

[0024] 2. The present invention uses the relative driving of two movable guide rollers by the moving part so that the two movable guide rollers tighten the bill, prompting the bill to remain flat on the supporting plate, and the buffer part has a buffering effect on the contact between the movable guide roller and the bill, thereby achieving effective printing of the bill, ensuring the quality of the bill, and avoiding damage to the bill.

[0025] 3. The present invention separates the interior of the shell through the partition, so that the exhaust gas is introduced into the suction area, while the blowing area dissipates the heat to the surface of the bill, which not only absorbs the exhaust gas, but also dries the bill, avoiding the exhaust gas from affecting the external environment and causing harm to people, thereby improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present application;

[0027] Figure 2 is a cross-sectional view of the present application;

[0028] Figure 3 is a three-dimensional structural cross-sectional view of the present application;

[0029] Figure 4 It is a partial three-dimensional structural schematic diagram of the present application;

[0030] Figure 5 It is a three-dimensional structural schematic diagram of the leveling mechanism of the present application;

[0031] Figure 6 yes Figure 5 A magnified schematic diagram of point A;

[0032] Figure 7 It is a three-dimensional structural schematic diagram of the support plate, shell and suction mechanism of the present application;

[0033] Figure 8 is a top view of the support plate, shell and suction mechanism of the present application;

[0034] Fig. 9 yes Figure 8 A three-dimensional structural cross-sectional view at BB;

[0035] Fig.10 yes Figure 8 Cross-sectional view of the three-dimensional structure at CC.

[0036] The numbers in the figure are:

[0037] 1-Conveyor rack;

[0038] 11- unloading roller;

[0039] 12- reel;

[0040] 13-fixed guide roller;

[0041] 2- Printing unit;

[0042] 3- Drying unit;

[0043] 4-support plate; 41-air hole;

[0044] 5- housing;

[0045] 51- partition; 511- air suction area; 5111- feeding port; 512- blowing area;

[0046] 52-connecting pipe;

[0047] 53- heating wire;

[0048] 6-Leveling mechanism;

[0049] 61- movable guide roller;

[0050] 62-buffer; 621-rectangular frame; 622-slider; 6221-guide rod; 623-buffer spring;

[0051] 63-moving part; 631-guide rail; 632-bidirectional screw drive; 6321-threaded sleeve;

[0052] 7-Suction mechanism;

[0053] 71- air tank; 711- trachea;

[0054] 72-Suction fan;

[0055] 73-filter plate;

[0056] 8-Bills. DETAILED DESCRIPTION

[0057] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0058] See also Figure 1-Figure 10 As shown, a printing device based on fluorescent anti-counterfeiting ink comprises a conveyor frame 1, on which a feeding roller 11 and a winding roller 12 for placing a bill 8 are provided, a fixed guide roller 13 is also provided on the conveyor frame 1 and located between the feeding roller 11 and the winding roller 12, and a printing unit 2 and a drying unit 3 are sequentially provided on the conveyor frame 1 from the feeding roller 11 to the winding roller 12; a supporting plate 4 for supporting the bill 8 is provided on the conveyor frame 1 and located between the two fixed guide rollers 13, a shell 5 is provided below the supporting plate 4, and flattening mechanisms 6 for adjusting the degree of adhesion of the bill 8 on the supporting plate 4 are provided on both sides of the bottom of the shell 5, and an air suction mechanism 7 for sucking gas generated during ink printing is also provided in the shell 5.

[0059] When printing the bill 8, first, the rolled bill 8 is placed on the unwinding roller 11, one end of the bill 8 is passed around the fixed guide roller 13 and the leveling mechanism 6 and connected to the winding roller 12, then, the leveling mechanism 6 lays the portion of the bill 8 that passes around the supporting plate 4 flat on the surface of the supporting plate 4, so that the bill 8 remains flat during the transportation process, and as the bill 8 is rolled up, the printing unit 2 prints fluorescent anti-counterfeiting ink on the bill 8. During the printing of the bill 8, the suction mechanism 7 absorbs the waste gas generated by the ink into the shell 5 to prevent the waste gas from affecting the external environment, and as the printed portion of the bill 8 passes through the drying unit 3, the printed portion of the bill 8 is still flat on the supporting plate 4, and the drying unit 3 dries the printed portion, and finally, the winding roller 12 gradually rolls up the bill 8 to complete the overall printing of the same batch of bills 8.

[0060] See also Figure 2-Figure 6 As shown, the leveling mechanism 6 is provided with two movable guide rollers 61, which are symmetrically arranged on both sides of the shell 5. The axial direction of the movable guide roller 61 is parallel to the axial direction of the fixed guide roller 13. The bill 8 is in a state of bypassing the movable guide roller 61, the fixed guide roller 13, the fixed guide roller 13 and the movable guide roller 61 in sequence. A buffer 62 is provided on each movable guide roller 61. Both movable guide rollers 61 can move along the edge direction of the conveying frame 1. The conveying frame 1 is provided with a movable member 63 for driving the two movable guide rollers 61 to move relative to each other.

[0061] When the leveling mechanism 6 is driven, due to the setting of the two movable guide rollers 61, the bill 8 passes by the bottom of the movable guide roller 61 and comes out from the top of the fixed guide roller 13. Therefore, the relative movement of the two movable guide rollers 61 can cause the bill 8 to be tightened. The movable member 63 drives the two movable guide rollers 61 to move toward the direction of the shell 5, and the bill 8 supported on the surface of the supporting plate 4 is tightened. Since a buffer member 62 is provided between the movable guide roller 61 and the movable member 63, the bill 8 will not be crushed by the movable guide roller 61, which not only completes the leveling of the bill 8 on the surface of the supporting plate 4, but also ensures the integrity of the bill 8.

[0062] See also Figure 2 , Figure 3 and Fig. 9 As shown, a partition 51 is provided in the shell 5 and located in the middle thereof, and a suction area 511 and a blowing area 512 are formed in the shell 5 by the partition 51 . The suction area 511 corresponds to the printing unit 2 , and the blowing area 512 corresponds to the drying unit 3 .

[0063] When the suction mechanism is driven, since the shell 5 is divided into a suction area 511 and a blowing area 512 by the partition 51, and the printing unit 2 corresponds to the suction area 511, the suction mechanism sucks the waste gas generated by the ink into the suction area 511 in the shell 5, and the blowing area 512 corresponds to the drying unit 3, causing the heat to be blown away to the surface of the bill 8.

[0064] See also Figure 7-10 As shown, the air suction mechanism 7 is provided with an air groove 71. There are two air grooves 71. The two air grooves 71 are symmetrically arranged on both sides of the upper end of the shell 5. An air pipe 711 is connected between the air groove 71 and the suction area 511 of the shell 5. An air suction fan 72 is provided in the suction area 511 of the shell 5.

[0065] When the suction mechanism 7 is started, the suction fan 72 is started, and the suction fan 72 gathers the exhaust gas in the air groove 71 through the air pipe 711, and sucks it into the suction area 511 through the air pipe 711 to absorb the exhaust gas, thereby ensuring a good state of the external environment.

[0066] See also Figure 7 , Fig. 9 and Fig.10 As shown, a filter plate 73 is provided in the suction area 511 of the shell 5 and between the suction fan 72 and the partition plate 51 , and a feeding port 5111 is provided on the shell 5 and at a portion corresponding to the suction area 511 .

[0067] When the exhaust gas is sucked into the suction area 511, the air cleaning agent is added into it through the feeding port 5111 and mixed with the exhaust gas, thereby purifying the exhaust gas and finally obtaining pure gas, while the waste residue in the exhaust gas is blocked on the filter plate 73, and the filtered gas will not affect the external environment.

[0068] See also Fig. 9 As shown, a connecting pipe 52 connecting the air suction area 511 and the air blowing area 512 is provided at the bottom of the shell 5 , and a heating wire 53 is provided in the air blowing area 512 of the shell 5 .

[0069] When the filtered gas is in the suction area 511, the connecting pipe 52 is connected to the external air pump to pump the filtered gas into the blowing area 512. The filtered gas passes through the heating wire 53, so that the filtered gas is heated, thereby applying heat to the surface of the bill 8, and together with the drying unit 3, the upper and lower surfaces of the bill 8 are dried together to achieve a rapid drying effect, thereby avoiding the situation where the printed part is not dry when the bill 8 is rolled up, resulting in printing overlap and affecting the printing effect.

[0070] See also Figure 7-10 As shown, a plurality of air holes 41 are evenly formed on the supporting plate 4 .

[0071] When the suction fan 72 draws air, since the support plate 4 has a plurality of air holes 41, the suction fan 72 draws air through the air holes 41, so that the bill 8 is adsorbed on the support plate 4, further ensuring the flatness of the surface of the bill 8 on the support plate 4. After the connecting pipe 52 blows the filtered air to the support plate 4, the filtered air is heated and acts on the lower surface of the bill 8 through the air holes 41, which further dries the bill 8.

[0072] See also Figure 4-Figure 6 As shown, the buffer member 62 is provided with a rectangular frame 621, the end of the movable guide roller 61 is arranged in the rectangular frame 621, the end of the movable guide roller 61 is axially connected to a slider 622, the slider 622 can move in the rectangular frame 621, both ends of the slider 622 have guide rods 6221 extending outward through the rectangular frame 621, the rectangular frame 621 is provided with a guide opening for the guide rod 6221 to pass through, and buffer springs 623 mounted on the guide rods 6221 are provided between both sides of the slider 622 and the rectangular frame 621.

[0073] When the two movable guide rollers 61 move to squeeze the bill 8 inward, the movable member 63 drives the rectangular frame 621 to move. Since the movable guide roller 61 and the rectangular frame 621 are connected via a guide rod 6221, and a buffer spring 623 is sleeved on the guide rod 6221, the movable guide roller 61 will obtain a buffering effect when squeezing the bill 8, thereby avoiding crushing the bill 8.

[0074] See also Figure 5 and Figure 6 As shown, the movable member 63 is provided with a guide rail 631, which has two guide rails 631. The two guide rails 631 are fixedly arranged on the conveying frame 1 in parallel with each other, and the rectangular frame 621 is slidably arranged between the two guide rails 631. The rectangular frame 621 is provided with a track groove that cooperates with the guide rail 631. A bidirectional screw driver 632 is provided on the conveying frame 1 and between the two corresponding rectangular frames 621. A threaded sleeve 6321 is connected between the two threaded segments on the bidirectional screw driver 632 and the corresponding rectangular frames 621.

[0075] When the moving member 63 drives the two corresponding rectangular frames 621 to move simultaneously, the bidirectional screw driver 632 drives the two threaded sleeves 6321 to move inward synchronously, thereby driving the two rectangular frames 621 to move synchronously. Since the rectangular frame 621 is located between the two guide rails 631, it guides the movement of the rectangular frame 621, and finally completes the leveling of the bill 8 on the support platform.

[0076] The green printing process based on fluorescent anti-counterfeiting ink includes the following steps:

[0077] S1, the two movable guide rollers 61 are driven by the moving member 63 to move relative to each other, so that the bill 8 is laid flat on the supporting plate 4;

[0078] S2, the reel 12 reels the bill 8;

[0079] S3, the printing unit 2 prints the bill 8 with fluorescent anti-counterfeiting ink;

[0080] S4, the gas printed by the ink is absorbed into the housing 5 through the suction mechanism 7;

[0081] S5, the drying unit 3 dries the bill 8.

[0082] The present invention guides the bill 8 through the flattening mechanism 6, so that the bill 8 is laid evenly on the surface of the supporting platform, thereby causing the bill 8 to be printed intact, and absorbs the waste gas generated by the ink through the suction mechanism 7 to avoid operating injuries to the human body. This not only achieves qualified printing of the bill 8, but also achieves absorption of the waste gas, thereby ensuring the quality of the bill 8 and improving the printing effect of the bill 8.

[0083] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A printing device based on fluorescent anti-counterfeiting ink, comprising a conveyor frame (1), wherein a feeding roller (11) and a winding roller (12) are provided on the conveyor frame (1) for placing bills (8), a fixed guide roller (13) is provided on the conveyor frame (1) and located between the feeding roller (11) and the winding roller (12), and a printing unit (2) and a drying unit (3) are provided on the conveyor frame (1) in sequence from the feeding roller (11) to the winding roller (12); It is characterized in that A support plate (4) for supporting the bill (8) is provided on the conveying frame (1) and between two fixed guide rollers (13); a shell (5) is provided below the support plate (4); flattening mechanisms (6) for adjusting the degree of adhesion of the bill (8) on the support plate (4) are provided on both sides of the bottom of the shell (5); and an air suction mechanism (7) for sucking gas generated during ink printing is also provided in the shell (5); A partition (51) is provided in the housing (5) and at a middle position thereof, and a suction area (511) and a blowing area (512) are formed in the housing (5) through the partition (51), the suction area (511) corresponds to the printing unit (2), and the blowing area (512) corresponds to the drying unit (3); The air suction mechanism (7) is provided with an air groove (71), the air groove (71) having two air grooves (71), the two air grooves (71) being symmetrically arranged on both sides of the upper end of the shell (5), an air pipe (711) being connected between the air groove (71) and the air suction area (511) of the shell (5), and an air suction fan (72) being arranged in the air suction area (511) of the shell (5); A filter plate (73) is provided in the air suction area (511) of the shell (5) and between the air suction fan (72) and the partition plate (51), and a feeding port (5111) is provided on the shell (5) and in a portion corresponding to the air suction area (511); A connecting pipe (52) connecting the air suction area (511) and the air blowing area (512) is provided at the bottom of the shell (5), and a heating wire (53) is provided in the air blowing area (512) of the shell (5).

2. The printing device based on fluorescent anti-counterfeiting ink according to claim 1, characterized in that: The leveling mechanism (6) is provided with two movable guide rollers (61), the two movable guide rollers (61) are symmetrically arranged on both sides of the housing (5), the axis direction of the movable guide roller (61) is parallel to the axis direction of the fixed guide roller (13), the bill (8) is in a state of bypassing the movable guide roller (61), the fixed guide roller (13), the fixed guide roller (13) and the movable guide roller (61) in sequence, each movable guide roller (61) is provided with a buffer (62), the two movable guide rollers (61) are both capable of moving along the edge direction of the conveying frame (1), and the conveying frame (1) is provided with a moving member (63) for driving the two movable guide rollers (61) to move relative to each other.

3. The printing device based on fluorescent anti-counterfeiting ink according to claim 1, characterized in that: A plurality of air holes (41) are evenly arranged on the supporting plate (4).

4. The printing device based on fluorescent anti-counterfeiting ink according to claim 2, characterized in that: The buffer member (62) is provided with a rectangular frame (621), the end of the movable guide roller (61) is arranged in the rectangular frame (621), the end of the movable guide roller (61) is axially connected to a slider (622), the slider (622) can move in the rectangular frame (621), both ends of the slider (622) are provided with guide rods (6221) extending outward through the rectangular frame (621), the rectangular frame (621) is provided with guide openings for the guide rods (6221) to pass through, and buffer springs (623) sleeved on the guide rods (6221) are provided between both sides of the slider (622) and the rectangular frame (621).

5. The printing device based on fluorescent anti-counterfeiting ink according to claim 2, characterized in that: The moving member (63) is provided with a guide rail (631), the guide rail (631) having two guide rails (631) being fixedly arranged on the conveying frame (1) in parallel with each other, the rectangular frame (621) being slidably arranged between the two guide rails (631), the rectangular frame (621) being provided with a track groove cooperating with the guide rail (631), a bidirectional screw driver (632) being provided on the conveying frame (1) and between the two corresponding rectangular frames (621), and a threaded sleeve (6321) being connected between the two threaded segments on the bidirectional screw driver (632) and the corresponding rectangular frames (621).

6. A green printing process based on fluorescent anti-counterfeiting ink, applied to a printing device based on fluorescent anti-counterfeiting ink as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1, driving two movable guide rollers (61) to move relative to each other through a moving member (63), so as to enable the bill (8) to be laid evenly on the supporting plate (4); S2, a reel (12) reels the bill (8); S3, the printing unit (2) prints fluorescent anti-counterfeiting ink on the bill (8); S4, absorbing the gas printed by the ink into the housing (5) through the suction mechanism (7); S5, the drying unit (3) dries the bill (8).

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