Flexographic printing machine and operation method thereof

Abstract

The invention belongs to the technical field of flexographic printing machines, and particularly relates to a flexographic printing machine and an operation method thereof.The flexographic printing machine comprises an unwinding component and a winding component, the unwinding component is arranged at the front end of a frame, the winding component is arranged at the tail end of the frame, a primary printing component and a secondary printing component are vertically arranged in the frame, and a dust removal component is arranged in the frame; the dust removal component is located between the unwinding component and the primary printing component, dust of a printing material pulled out of the unwinding component is removed through the dust removal component, the printing material is subjected to primary printing through the primary printing component after dust removal, and then is subjected to secondary printing through the secondary printing component; after printing is completed, the printing material is rolled up by the rolling part, dust on the printing material is cleaned through the dust cleaning part, and the situation that the dust is attached to the printing material, and the subsequent printing effect is affected is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of flexographic printing machines, and in particular relates to a flexographic printing machine and an operating method thereof. Background Art

[0002] In the existing flexographic printing process, due to the dust on the printing material, in the subsequent printing process, the dust remains between the printing material and the ink, affecting the appearance and printing effect. The flexographic printing machine is not equipped with a dust cleaning component;

[0003] For example, the patent application number is CN202111231488.5, a flexographic printing machine and its operating method, system, flexographic mold, and sleeve. The flexographic printing machine has a embossing roller carrying a sleeve or a flexographic embossing roller and a counter-pressure roller forming a printing gap therewith, and the sleeve has at least one flexographic mold, wherein a web consisting of a printing material is printed in the printing gap and the conveying speed of the web is adjusted, and the adjustment is automatically performed according to the dot density of the flexographic mold, that is, the location-related density of the printing protrusions of the flexographic mold, or data derived therefrom through computing technology, or according to the channel of the flexographic mold or the embossing roller or data derived therefrom through computing technology. However, the disadvantage of this technical solution is that there is no cleaning component, and the dust on the printing material cannot be cleaned off, affecting the printing effect. Summary of the invention

[0004] The object of the present invention is to provide a flexographic printing machine and an operating method thereof to solve the problems in the prior art. The specific technical scheme is as follows:

[0005] A flexographic printing machine comprises a reeling component and a reeling component, wherein the reeling component is arranged at the front end of a frame, and the reeling component is arranged at the rear end of the frame, a primary printing component and a secondary printing component are arranged vertically in the frame, a dust cleaning component is arranged in the frame, and the dust cleaning component is located between the reeling component and the primary printing component.

[0006] Furthermore, the unwinding component includes two support arms, one end of each support arm is rotatably connected to the frame, and the other end of each support arm is provided with a limiting component, which limits the printing material roll to the opening at the end of the support arm, and the limiting component and the support arm are rotatably connected to the printing material roll.

[0007] Furthermore, the limiting component includes a bracket, the bracket is fixed on the support arm, a slider is slidably connected in the bracket, a spring is provided between the bracket and the slider, a rotating wheel is rotatably connected in the bracket, the slider is clamped in an opening on the rotating wheel, and the printing material roll is rotatably connected to the rotating wheel.

[0008] Furthermore, the frame is fixedly connected to the cylinder, the output end of the cylinder is connected to the support arm, two guide rollers 1 are rotatably connected between the two support arms, and a guide roller 2 is fixed between the two support arms. The printing material pulled out from the printing material roll passes through the two guide rollers 1 and 2 and enters the cleaning component.

[0009] Furthermore, the cleaning component includes two upper cleaning wheels and two lower cleaning wheels, the two upper cleaning wheels are located on the upper side of the printing material, and the two lower cleaning wheels are located on the lower side of the printing material, the ends of the two upper cleaning wheels are driven by a belt, and the ends of the two lower cleaning wheels are driven by a belt, the end of one of the upper cleaning wheels is engaged with the end of the lower cleaning wheel directly below it through gears, and one of the lower cleaning wheels is driven by motor 1, and motor 1 is fixed to the outer wall of the frame.

[0010] Furthermore, two guide rollers three are rotatably connected in the frame, and impression roller one and impression roller two are rotatably connected in the frame, one end of impression roller one is connected to motor two, and the other end of impression roller two is connected to motor five, and motor two and motor five are both fixed on the outer wall of the frame. The printing material passes through the two guide rollers three, passes between the primary printing component and impression roller one to be printed once, and then passes between the secondary printing component and impression roller two to be printed twice.

[0011] Furthermore, two guide rollers four are rotatably connected in the frame, and the printing material passing between the two guide rollers four is dried by two sets of hot air blowers, which are respectively installed on both sides of the inner wall of the frame;

[0012] The winding component includes a winding support arm, one end of which is fixed to the frame, and the other end of the frame is provided with a groove, in which a winding drum is rotatably connected, and the dried printing material is wound on the winding drum, and the end of the winding drum is connected to a driving motor, and the driving motor is fixed to the winding support arm.

[0013] Furthermore, the primary printing component includes a shell, which is fixed on the frame. An ink groove is provided at the bottom of the shell, a screen roller is rotatably connected inside the shell, a scraper is provided on the side of the screen roller, and the scraper is fixed to the shell by fixing screws. Arc grooves are provided on both sides of the shell, a roller bracket is slidably connected inside the arc groove, a printing plate roller is rotatably connected inside the roller bracket, a pressure cover is inserted into the shell, and the pressure cover is fixed to the shell by a pressure plate, and a spring 2 is provided between the shell and the pressure plate.

[0014] Further, the roller bracket includes an end kit, the end kit slides in the arc groove, the end of the end kit is threadedly connected to the fixing nut, and the roller bracket is rotatably connected in the end kit;

[0015] The printing plate cylinder comprises an inner column, which rotates in the end sleeve, the end of the inner column is connected to the output end of the motor six, the motor six is ​​fixed on the end sleeve, a sleeve is sleeved on the outer side of the inner column, and a flexographic printing die is arranged on the outer side of the sleeve.

[0016] A method for operating a flexographic printing machine, applicable to any of the above-mentioned flexographic printing machines, comprises the following steps:

[0017] S1. The printing material roll is mounted on the unwinding component, and the printing material pulled out from the printing material roll passes through two guide rollers 1 and 2 and enters the dust cleaning component;

[0018] S2. The cleaning component cleans the upper and lower surfaces of the printing material. The cleaned printing material passes through two guide rollers 3, passes between the primary printing component and the impression roller 1, is printed once, and passes between the secondary printing component and the impression roller 2, is printed twice;

[0019] S3. After printing, the printing material is dried by a hot air blower and then rolled up by a winding component.

[0020] The advantages of the present invention are:

[0021] 1. The printing material pulled out from the unwinding part passes through the dust cleaning part to clean the dust. After the dust on the printing material is cleaned, it passes through the primary printing part for the first printing, and then passes through the secondary printing part for the second printing. After printing, the printing material is rolled up by the winding part, and the dust on the printing material is cleaned by the dust cleaning part to prevent dust from adhering to the printing material and affecting subsequent printing.

[0022] 2. Each group of hot air blowers includes two hot air blowers, and the two hot air blowers are arranged in parallel between two guide rollers 4. The two hot air blowers increase the drying stroke of the printing material and improve the drying effect of the printing material.

[0023] 3. After the printing material is printed by the primary printing component, the printing material moves upward from the lower end of the guide roller 5, and moves upward between the flexographic die 1 and the impression roller 3, so that the flexographic die 1 prints ink on the other side of the printing material, thereby completing the switching of the primary printing component printing on one side of the printing material and the secondary printing component printing on the other side of the printing material. The switching between printing on the same side and printing on both sides is convenient and fast, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 The overall structure of the present invention is shown in FIG. Figure 3 ;

[0027] Figure 4 for Figure 1 A partial enlarged view of

[0028] Figure 5 It is a schematic diagram of the structure of the runner of the present invention;

[0029] Figure 6 The structure of the one-time printing component of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 7 The structure of the one-time printing component of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 8 The structure of the one-time printing component of the present invention is shown in FIG. Figure 3 ;

[0032] Fig. 9 The structure of the one-time printing component of the present invention is shown in FIG. Figure 4 ;

[0033] Fig.10 The structure of the one-time printing component of the present invention is shown in FIG. Figure 5 ;

[0034] Fig.11 The secondary printing component structure of the present invention is shown in FIG. Figure 1 ;

[0035] Fig.12 The secondary printing component structure of the present invention is shown in FIG. Figure 2 ;

[0036] Fig.13 The secondary printing component structure of the present invention is shown in FIG. Figure 3 ;

[0037] Fig.14 The secondary printing component structure of the present invention is shown in FIG. Figure 4 ;

[0038] Fig.15 The secondary printing component structure of the present invention is shown in FIG. Figure 5 ;

[0039] Description of the markings in the figure:

[0040] Support arm 1; printing material roll 2; bracket 3; spring 14; slider 5; rotating wheel 6; cylinder 7; frame 8; guide roller 19; guide roller 210; upper dust cleaning wheel 11; lower dust cleaning wheel 12; motor 13; primary printing component 14; shell 1401; ink tank 1402; anilox roller 1403; scraper 1404; fixing screw 1405; arc groove 1406; inner column 1407; sleeve 1408; flexographic printing die 1409; end kit 1410; fixing nut 1411; motor 6 1412; pressure cover 1413; pressure plate 1414; spring 2 1415; secondary printing component 15; shell 1 501; ink tank 1502; scraper 1503; impression roller 3 1504; motor 7 1505; anilox roller 1506; arc groove 1507; guide roller 5 1508; inner column 1509; sleeve 1510; flexographic die 1511; end kit 1512; fixing nut 1513; motor 8 1514; pressure cover 1515; pressure plate 1516; spring 3 1517; control panel 16; guide roller 3 17; impression roller 1 18; impression roller 2 19; guide roller 4 20; hot air blower 21; winding arm 22; winding drum 23; motor 2 24; motor 5 25. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] Embodiment 1

[0044] like Figure 1-15 As shown, a flexographic printing machine includes an unwinding component and a rewinding component, wherein the unwinding component is arranged at the front end of a frame 8, and the rewinding component is arranged at the rear end of the frame 8, a primary printing component 14 and a secondary printing component 15 are arranged vertically in the frame 8, and a dust cleaning component is arranged in the frame 8, and the dust cleaning component is located between the unwinding component and the primary printing component 14;

[0045] The working principle of the above technical solution is as follows: the printing material pulled out from the unwinding component is cleaned of dust by the cleaning component. After the dust on the printing material is cleaned, it is passed through the primary printing component 14 for the first printing, and then passed through the secondary printing component 15 for the second printing. After printing, the printing material is rolled up by the winding component, and the dust on the printing material is cleaned by the cleaning component to prevent dust from adhering to the printing material and affecting subsequent printing.

[0046] Embodiment 2

[0047] like Figure 1-15 As shown, the unwinding component includes two support arms 1, one end of each of the two support arms 1 is rotatably connected to the frame 8, and the other end of each of the two support arms 1 is provided with a limiting component, which limits the printing material roll 2 to the opening at the end of the support arm 1, and the limiting component and the support arm 1 are both rotatably connected to the printing material roll 2;

[0048] The limiting component includes a bracket 3, the bracket 3 is fixed on the support arm 1, a slider 5 is slidably connected in the bracket 3, a spring 4 is provided between the bracket 3 and the slider 5, a rotating wheel 6 is rotatably connected in the bracket 3, the slider 5 is clamped in an opening 1 on the rotating wheel 6, and the printing material roll 2 is rotatably connected to the rotating wheel 6;

[0049] The frame 8 is fixedly connected to the cylinder 7, the output end of the cylinder 7 is connected to the support arm 1, two guide rollers 1 9 are rotatably connected between the two support arms 1, and a guide roller 2 10 is fixed between the two support arms 1. The printing material pulled out from the printing material roll 2 passes through the two guide rollers 1 9 and the guide roller 2 10 and enters the dust cleaning component;

[0050] The working principle of the above technical solution is as follows: the slider 5 is pulled backward to compress the spring 14, and the rotating wheel 6 is rotated to cause the opening 1 on the rotating wheel 6 to coincide with the opening on the support arm 1, so that the printing material roll 2 can be removed or replaced. When the replaced printing material roll 2 is put back into the opening on the support arm 1, the rotating wheel 6 is rotated to stagger the opening 1 on the rotating wheel 6 with the support arm 1 until the rotating wheel 6 rotates to have its opening 1 facing the slider 5. Under the action of the elastic force of the spring 14, the slider 5 is driven to move forward, and the slider 5 is clamped in the opening 1 on the rotating wheel 6 to prevent the rotating wheel 6 from rotating at will, and then the two ends of the printing material roll 2 are limited in the openings on the support arm 1.

[0051] Starting the cylinder 7 can drive the support arm 1 and the frame 8 to rotate, thereby adjusting the up and down movement of the printing material roll 2, thereby changing the height of the printing material roll 2, and the printing material pulled out from the printing material roll 2 passes through two guide rollers 1 9 and guide roller 2 10 into the cleaning component.

[0052] Embodiment 3

[0053] like Figure 1-15 As shown, the cleaning component includes two upper cleaning wheels 11 and two lower cleaning wheels 12, the two upper cleaning wheels 11 are located on the upper side of the printing material, and the two lower cleaning wheels 12 are located on the lower side of the printing material. The ends of the two upper cleaning wheels 11 are driven by a belt, and the ends of the two lower cleaning wheels 12 are driven by a belt. The end of one of the upper cleaning wheels 11 is meshed with the end of the lower cleaning wheel 12 directly below it through a gear transmission, and one of the lower cleaning wheels 12 is driven by a motor 13, and the motor 13 is fixed to the outer wall of the frame 8;

[0054] The working principle of the above technical solution is as follows: the starting motor 13 drives the lower cleaning wheel 12 to rotate, and drives the other lower cleaning wheel 12 to rotate through the belt. Since the end of one of the upper cleaning wheels 11 is meshed with the end of the lower cleaning wheel 12 directly below it through gear transmission, the rotation of the lower cleaning wheel 12 drives the upper cleaning wheel 11 above it to rotate, and the upper cleaning wheel 11 drives the other upper cleaning wheel 11 to rotate through the belt, and then drives the two upper cleaning wheels 11 and the two lower cleaning wheels 12 to rotate. The two upper cleaning wheels 11 and the two lower cleaning wheels 12 clean the dust on the upper and lower sides of the printing material, and the dust under the printing material falls directly on the ground, and the dust on the printing material slides off when the back of the printing material is tilted or moved vertically;

[0055] The purpose of the upper cleaning wheel 11 and the lower cleaning wheel 12 is to separate dust from the printing material to prevent the dust from affecting subsequent printing.

[0056] Embodiment 4

[0057] like Figure 1-15 As shown, two guide rollers 3 17 are rotatably connected in the frame 8, and an impression roller 18 and an impression roller 2 19 are rotatably connected in the frame 8. The end of the impression roller 18 is connected to the motor 24, and the end of the impression roller 2 19 is connected to the motor 5 25. The motor 24 and the motor 5 25 are both fixed on the outer wall of the frame 8. The printing material passes through the two guide rollers 3 17, passes between the primary printing component 14 and the impression roller 1 18, and is printed once, and then passes between the secondary printing component 15 and the impression roller 2 19, and is printed twice.

[0058] The frame 8 has two guide rollers 20 rotatably connected therein, and the printing material passing between the two guide rollers 20 is dried by two sets of hot air blowers 21, which are respectively installed on both sides of the inner wall of the frame 8;

[0059] The winding component includes a winding arm 22, one end of which is fixed to the frame 8, and the other end of the frame 8 is provided with a groove, in which a winding drum 23 is rotatably connected, and the dried printing material is wound on the winding drum 23, and the end of the winding drum 23 is connected to a driving motor, and the driving motor is fixed to the winding arm 22;

[0060] The working principle of the above technical solution is: each group of hot air fans 21 includes two hot air fans 21, and the two hot air fans 21 are arranged in parallel between the two guide rollers 20. The two hot air fans 21 increase the drying stroke of the printing material and increase the drying effect of the printing material.

[0061] Embodiment 5

[0062] like Figure 1-15 As shown, the primary printing component 14 includes a shell 1401, the shell 1401 is fixed on the frame 8, an ink tank 1402 is provided at the bottom of the shell 1401, an anilox roller 1403 is rotatably connected in the shell 1401, a scraper 1404 is provided on the side of the anilox roller 1403, and the scraper 1404 is fixed to the shell 1401 by fixing screws 1405, arc grooves 1406 are provided on both sides of the shell 1401, a roller bracket is slidably connected in the arc groove 1406, and a printing plate roller is rotatably connected in the roller bracket, a pressure cover 1413 is plugged into the shell 1401, and the pressure cover 1413 is fixed to the shell 1401 by a pressure plate 1414, and a spring 1415 is provided between the shell 1401 and the pressure plate 1414;

[0063] The roller bracket includes an end kit 1410, which slides in the arc groove 1406, and the end of the end kit 1410 is threadedly connected to the fixing nut 1411, and the roller bracket is rotatably connected in the end kit 1410;

[0064] The plate cylinder includes an inner column 1407, the inner column 1407 rotates in the end set 1410, the end of the inner column 1407 is connected to the output end of the motor 1412, the motor 1412 is fixed on the end set 1410, the outer side of the inner column 1407 is sleeved with a sleeve 1408, and the outer side of the sleeve 1408 is provided with a flexographic printing die 1409;

[0065] The working principle of the above technical solution is as follows: ink is stored in the ink tank 1402, half of the volume of the anilox roller 1403 is located in the ink in the ink tank 1402, and the other half of the volume of the anilox roller 1403 is located above the ink tank 1402, the anilox roller 1403 is connected to the driving mechanism, the driving mechanism drives the anilox roller 1403 to rotate, the anilox roller 1403 covers the outer surface of the anilox roller 1403 with ink, the scraper 1404 scrapes off the excess ink on the anilox roller 1403, so that the ink on the outer surface of the anilox roller 1403 is evenly distributed, the anilox roller 1403 is attached to the flexographic die 1409, the anilox roller 1403 prints the ink on the flexographic die 1409, and the printing material moves upward between the flexographic die 1409 and the impression cylinder 18;

[0066] The motor 6 1412 is started to drive the inner column 1407 to rotate, drive the sleeve 1408 to rotate, drive the flexographic mold 1409 to rotate along with the sleeve 1408, start the motor 24, drive the impression cylinder 18 to rotate, the impression cylinder 18 is pressed against one side of the printing material, the flexographic mold 1409 is pressed against the other side of the printing material, and ink is printed on the printing material;

[0067] The fixing screw 1405 is rotated to separate the lower end of the screw 1405 from the scraper 1404, and the scraper 1404 can be moved, thereby changing the distance between the front end of the scraper 1404 and the anilox roller 1403, thereby changing the ink thickness on the anilox roller 1403. After adjusting the scraper 1404, the screw 1405 is rotated again to make the front end of the screw 1405 abut against the scraper 1404, so that the scraper 1404 cannot move at will, thereby completing the adjustment of the scraper 1404.

[0068] The fixing nuts 1411 on both sides of the housing 1401 are rotated to drive the end kit 1410 and the fixing nuts 1411 to rotate in a threaded manner, so that the fixing nuts 1411 are separated from the outer wall of the housing 1401, so that the end kit 1410 can slide in the arc groove 1406, thereby changing the position of the plate cylinder, thereby changing the distance between the flexographic die 1409 and the impression cylinder 18, and thus adaptively adjusting according to different thicknesses of the printing material. After the adjustment is completed, the fixing nuts 1411 are rotated again, so that the fixing nuts 1411 are threadedly connected with the end kit 1410, and the fixing nuts 1411 are tightly attached to the outer wall of the housing 1401 to prevent the end kit 1410 from being unable to move at will;

[0069] The fixing nuts 1411 on both sides of the housing 1401 are rotated to drive the end kit 1410 and the fixing nuts 1411 to rotate in a threaded manner, so that the fixing nuts 1411 are separated from the outer wall of the housing 1401, and the end kit 1410 can slide in the arc groove 1406, thereby changing the position of the printing plate cylinder, pulling the pressure plate 1414, driving the second spring 1415 to be compressed, driving the front end of the pressure plate 1414 to separate from the pressure cover 1413, pulling up the pressure cover 1413, taking out the pressure cover 1413, and then taking out the printing plate cylinder, and then separating the end kit 1410 from the inner column 1407, sliding the sleeve 1408 and the flexographic die 1409 from the inner column 1407 to take them out, so as to facilitate the cleaning and replacement of the sleeve 1408 and the flexographic die 1409;

[0070] The sleeve 1408 is sleeved on the outside of the inner column 1407. A protrusion is provided on the outside of the inner column 1407, and a concave groove is provided inside the sleeve 1408. The protrusion and the concave groove are engaged with each other to prevent the sleeve 1408 and the inner column 1407 from rotating at will.

[0071] Embodiment 6

[0072] like Figure 1-15 As shown, the secondary printing component 15 includes a housing 1501, the housing 1501 is located above the housing 1401 and fixed on the frame 8, an ink tank 1502 is provided at the bottom of the housing 1501, an anilox roller 1506 is rotatably connected in the housing 1501, a scraper 1503 is provided on the side of the anilox roller 1506, the scraper 1503 is fixed to the housing 1501 by a fixing screw, and arc grooves 1502 are provided at both ends of the housing 1501. 7. The arc groove 1507 is slidably connected with an end kit 1512, the end of the end kit 1512 is threadedly connected with a fixing nut 1513, the end of the end kit 1512 is rotatably connected with an inner column 1509, the inner column 1509 is provided with a sleeve 1510 on the outer sleeve, and a flexographic die 1511 is provided on the outer sleeve 1510, the inner column 1509 is connected with the output end of the motor 8 1514, and the motor 8 1514 is fixed on the end kit 1512;

[0073] A pressure cover 1515 is inserted into the housing 1501, and the pressure cover 1515 is pressed and fixed on the housing 1501 by a pressure plate 1516. A spring 3 1517 is provided between the housing 1501 and the pressure plate 1516.

[0074] The lower end of the housing 1501 is rotatably connected to a guide roller 5 1508, and the side of the housing 1501 is rotatably connected to an impression roller 3 1504, and the impression roller 3 1504 is connected to the output end of the motor 7 1505, and the motor 7 1505 is fixed on the housing 1501;

[0075] The working principle of the above technical solution is as follows: after the printing material is printed by the primary printing unit 14, it continues to move upward, the printing material moves upward between the flexographic die 1511 and the impression roller 2 19, the anilox roller 1506 rotates, and the ink in the ink tank 1502 is transferred to the flexographic die 1511, the flexographic die 151 prints the ink on the printing material, and the primary printing unit 14 and the secondary printing unit 15 print two colors of ink on the same side of the printing material;

[0076] If the primary printing part 14 is to be printed on one side of the printing material and the secondary printing part 15 is to be printed on the other side of the printing material, the scraper 1503 on the left side of the anilox roller 1506 is removed, and the scraper 1503 is inserted into the housing 1501 on the right side of the anilox roller 1506, and the fixing nuts 1513 on both sides of the housing 1501 are rotated to drive the end sleeve 1512 and the fixing nuts 1513 to rotate, so that the fixing nuts 1513 and the housing 1501 are connected. 01 outer wall is separated, so that the end kit 1512 can slide in the arc groove 1507, and the end kit 1512 is slid to the other end of the arc groove 1507, and the fixing nut 1513 is rotated again, so that the fixing nut 1513 is closely attached to the outer surface of the shell 1501, so that the end kit 1512 is fixed on the shell 1501 and cannot move freely in the arc groove 1507. At this time, the second impression roller 19 stops running, and the third impression roller 1504 starts;

[0077] After the printing material is printed by the primary printing unit 14, the printing material moves upward from the lower end of the guide roller 5 1508, and moves upward between the flexographic printing die 1 1511 and the impression roller 3 1504, so that the flexographic printing die 1 1511 prints ink on the other side of the printing material, thereby completing the switching of the primary printing unit 14 printing on one side of the printing material and the secondary printing unit 15 printing on the other side of the printing material;

[0078] The switch between printing on the same side and printing on both sides is quick and easy, saving time and effort.

[0079] Embodiment 7

[0080] like Figure 1-15 As shown, a method for operating a flexographic printing machine is applicable to a flexographic printing machine described in any one of the above items, comprising the following steps:

[0081] S1. The printing material roll 2 is installed on the unwinding component, and the printing material pulled out from the printing material roll 2 passes through two guide rollers 9 and guide roller 2 10 and enters the dust cleaning component;

[0082] S2. The cleaning component cleans the upper and lower surfaces of the printing material. The cleaning printing material passes through two guide rollers 17, passes between the primary printing component 14 and the impression cylinder 18, is printed once, and passes between the secondary printing component 15 and the impression cylinder 2 19, is printed twice;

[0083] S3. After printing, the printing material is dried by the hot air blower 21 and then reeled by the reeling member;

[0084] The working principle of the above technical solution is as follows: the printing material roll 2 is installed on the unwinding component, the printing material pulled out from the printing material roll 2 passes through two guide rollers 1 9 and guide roller 2 10 and enters the cleaning component, the cleaning component cleans the upper and lower surfaces of the printing material, the cleaning printing material passes through two guide rollers 3 17, and then passes through the primary printing component 14 and the impression roller 1 18 to be printed once, and then passes through the secondary printing component 15 and the impression roller 2 19 to be printed twice, and the printing material after printing is dried by the hot air blower 21, and then is wound up by the winding component.

[0085] Embodiment 8

[0086] like Figure 1-15 As shown, it also includes a control panel 16, which is arranged on the outer wall of the frame 8, and the cylinder 7, motor 11, motor 6 1412, motor 7 1505, motor 8 1514, hot air blower 21, motor 24 and motor 5 25 are all electrically connected to the control panel 16;

[0087] The working principle of the above technical solution is: the operation and stop of the flexographic printing press can be controlled by the control panel 16 .

[0088] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A flexographic printing press, characterized in that: The invention comprises an unwinding component and a rewinding component, wherein the unwinding component is arranged at the front end of a frame (8), and the rewinding component is arranged at the rear end of the frame (8). A primary printing component (14) and a secondary printing component (15) are arranged vertically in the frame (8), and a dust cleaning component is arranged in the frame (8), and the dust cleaning component is located between the unwinding component and the primary printing component (14).

2. A flexographic printing press according to claim 1, characterized in that: The unwinding component comprises two support arms (1), one end of each of the two support arms (1) is rotatably connected to the frame (8), and the other end of each of the two support arms (1) is provided with a limiting component, which limits the printing material roll (2) to an opening at the end of the support arm (1), and the limiting component and the support arm (1) are both rotatably connected to the printing material roll (2).

3. A flexographic printing press according to claim 2, characterized in that: The limiting component comprises a bracket (3), the bracket (3) is fixed on the support arm (1), a slider (5) is slidably connected inside the bracket (3), a spring (4) is provided between the bracket (3) and the slider (5), a rotating wheel (6) is rotatably connected inside the bracket (3), the slider (5) is clamped in an opening (1) on the rotating wheel (6), and the printing material roll (2) is rotatably connected to the rotating wheel (6).

4. A flexographic printing press according to claim 3, characterized in that: The frame (8) is fixedly connected to the cylinder (7); the output end of the cylinder (7) is connected to the support arm (1); two guide rollers (9) are rotatably connected between the two support arms (1); a guide roller (10) is fixed between the two support arms (1); the printing material pulled out from the printing material roll (2) passes through the two guide rollers (9) and the guide roller (10) and enters the dust cleaning component.

5. The flexographic printing machine according to claim 1, characterized in that: The cleaning component comprises two upper cleaning wheels (11) and two lower cleaning wheels (12), the two upper cleaning wheels (11) are located on the upper side of the printing material, and the two lower cleaning wheels (12) are located on the lower side of the printing material, the ends of the two upper cleaning wheels (11) are driven by a belt, and the ends of the two lower cleaning wheels (12) are driven by a belt, the end of one of the upper cleaning wheels (11) is meshed with the end of the lower cleaning wheel (12) directly below it through a gear transmission, and one of the lower cleaning wheels (12) is driven by a motor 1 (13), and the motor 1 (13) is fixed on the outer wall of the frame (8).

6. A flexographic printing press according to claim 5, characterized in that: Two guide rollers three (17) are rotatably connected in the frame (8), and an impression roller one (18) and an impression roller two (19) are rotatably connected in the frame (8). The end of the impression roller one (18) is connected to a motor two (24), and the end of the impression roller two (19) is connected to a motor five (25). Both the motor two (24) and the motor five (25) are fixed on the outer wall of the frame (8). The printing material passes through the two guide rollers three (17), passes between the primary printing component (14) and the impression roller one (18), is printed once, and then passes between the secondary printing component (15) and the impression roller two (19), is printed twice.

7. A flexographic printing press according to claim 6, characterized in that: The frame (8) is rotatably connected to two guide rollers (20) inside the frame (8), and the printing material passing between the two guide rollers (20) is blown dry by two sets of hot air blowers (21), and the two sets of hot air blowers (21) are respectively installed on both sides of the inner wall of the frame (8); The winding component comprises a winding support arm (22), one end of which is fixed on the frame (8), and the other end of the frame (8) is provided with a groove, in which a winding drum (23) is rotatably connected, and the dried printing material is wound on the winding drum (23), and the end of the winding drum (23) is connected to a driving motor, and the driving motor is fixed on the winding support arm (22).

8. A flexographic printing machine according to claim 7, characterized in that: The primary printing component (14) comprises a shell (1401), the shell (1401) is fixed on the frame (8), an ink tank (1402) is provided at the bottom of the shell (1401), a screen roller (1403) is rotatably connected in the shell (1401), a scraper (1404) is provided on the side of the screen roller (1403), the scraper (1404) is fixed to the shell (1401) by fixing screws (1405), arc grooves (1406) are provided on both sides of the shell (1401), a roller bracket is slidably connected in the arc groove (1406), a printing plate roller is rotatably connected in the roller bracket, a pressure cover (1413) is plugged into the shell (1401), the pressure cover (1413) is fixed to the shell (1401) by pressing a pressure plate (1414), and a spring 2 (1415) is provided between the shell (1401) and the pressure plate (1414).

9. A flexographic printing press according to claim 8, characterized in that: The roller bracket comprises an end sleeve (1410), the end sleeve (1410) slides in the arc groove (1406), the end of the end sleeve (1410) is threadedly connected to the fixing nut (1411), and the roller bracket is rotatably connected in the end sleeve (1410); The printing plate cylinder includes an inner column (1407), the inner column (1407) rotates in an end sleeve (1410), the end of the inner column (1407) is connected to the output end of motor six (1412), the motor six (1412) is fixed on the end sleeve (1410), the outer side of the inner column (1407) is provided with a sleeve (1408), and the outer side of the sleeve (1408) is provided with a flexographic printing mold (1409).

10. A method for operating a flexographic printing press, applicable to a flexographic printing press according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The printing material roll (2) is mounted on the unwinding component, and the printing material pulled out from the printing material roll (2) passes through two guide rollers 1 (9) and guide roller 2 (10) and enters the dust cleaning component; S2. The cleaning component cleans the upper and lower surfaces of the printing material. The cleaned printing material passes through two guide rollers (17), passes between the primary printing component (14) and the impression roller (18) to be printed once, and then passes between the secondary printing component (15) and the impression roller (19) to be printed twice. S3. After printing, the printing material is dried by a hot air blower (21) and then rolled up by a rolling component.

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