Printing ink stirring and circulating device of photogravure press

Abstract

The utility model relates to the technical field of printing machine accessories, in particular to an ink stirring and circulating device of a photogravure press, which comprises a stirring cylinder and a circulating pipe, an ink cylinder is arranged at the front end of the stirring cylinder, an ink supplementing port is arranged at the front end of the ink cylinder, and a circulating seat is arranged in front of the upper part of the outer surface of the ink cylinder. And a U-shaped pipe is arranged at the rear end of the circulating seat. According to the printing ink stirring and circulating device of the photogravure press, impurities, particles and other foreign matter can be finely filtered out through the filter box during ink circulation, a high-quality pure ink source is provided, the definition and quality of printed patterns are improved, stable connection is achieved through the fixing protruding blocks and the fixing holes, disassembly and replacement are convenient, and therefore the filtering effect is guaranteed; meanwhile, the rotating rod, the stirring blades and the scraping pieces are arranged, the motor can drive the rotating rod and the stirring blades to fully stir ink during ink discharging, the scraping pieces scrape the ink on the inner wall to improve the fluidity, the situation that the ink is condensed to affect the printing quality is avoided, and the problem that an existing device discharges condensed ink is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of printing machine accessories, and in particular to an ink stirring and circulation device for a gravure printing machine. Background Technology

[0002] In the field of gravure printing, the state of the ink plays a crucial role in printing quality. Traditional ink stirring and circulation devices in gravure printing machines have many problems. Even if the ink stirring and circulation devices of current gravure printing machines have a simple filtration function, they are difficult to filter impurities and particles in detail during the ink circulation process. As a result, the ink often contains foreign matter, which seriously affects the clarity and quality of the printed pattern and easily leads to various printing defects. In terms of stirring function, some existing devices cannot properly handle residual ink when discharging ink because condensed ink easily adheres to the inner wall of the stirring cylinder, resulting in insufficient stirring. Therefore, we have introduced a new ink stirring and circulation device for gravure printing machines. Utility Model Content

[0003] The main objective of this invention is to provide an ink stirring and circulation device for a gravure printing machine, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An ink stirring and circulation device for a gravure printing machine includes a stirring cylinder and a circulation pipe. An ink cartridge is located at the front end of the stirring cylinder, and an ink replenishment port is located at the front end of the ink cartridge. A circulation seat is located at the front upper part of the outer surface of the ink cartridge, and a U-shaped tube is located at the rear end of the circulation seat. First connectors are located at the rear right end of the U-shaped tube and the left end of the circulation pipe. A stirring mechanism is located at the rear end of the stirring cylinder. Sealing grooves are located on the facing surfaces of the two first connectors. Connecting seats are located at the front and rear outer surfaces of the two first connectors. Fixing holes are located inside the four connecting seats. A filter device is movably installed between the two first connectors. A first ink discharge pipe is located at the lower end of the circulation pipe. A solenoid valve is located at the front end of the first ink discharge pipe, and a micro pump is located at the rear end of the first ink discharge pipe. A second ink discharge pipe is located at the rear end of the micro pump. An ink discharge seat is located at the rear lower part of the outer surface of the stirring cylinder, and the other end of the second ink discharge pipe is fixedly connected to the ink discharge seat.

[0006] Preferably, the filtering device includes a filter box, with connecting pipes at both the left and right ends of the filter box. A second connector is fixedly installed at the end of each of the two connecting pipes furthest from the filter box. An annular sealing gasket is provided at the end of each of the two second connectors furthest from the connecting pipes. Two connecting blocks are provided at the end of each of the two second connectors furthest from the connecting pipes. A spring is fixedly installed inside each of the four connecting blocks via an inner groove. A guide block is movably installed inside each of the four connecting blocks via an inner groove. A fixing protrusion is fixedly installed at the end of each of the four guide blocks furthest from the spring.

[0007] Preferably, the filter box is movably engaged with the upper part of the outer surface of the ink cartridge via a positioning block.

[0008] Preferably, the second connector is positioned left-right corresponding to the first connector, and the filter box is sealed together with the two sealing grooves by an annular sealing gasket.

[0009] Preferably, the connecting block corresponds to the connecting seat, the connecting block is movably engaged inside the connecting seat, the fixing protrusion is movably engaged inside the fixing hole by a spring and a guide block, and the U-shaped tube is connected to the inside of the circulation tube through the filter box.

[0010] Preferably, the stirring mechanism includes a motor, a rotating rod is fixedly installed at the output end of the motor, three sets of stirring blades are provided on the outer surface of the rotating rod, a mounting plate is provided at one end of each of the three sets of stirring blades near the inner wall of the stirring cylinder, and a scraper is provided at one end of each of the three mounting plates away from the stirring blades.

[0011] Preferably, the front part of the stirring mechanism penetrates the rear wall of the stirring cylinder and extends into the interior of the stirring cylinder, and the three sets of stirring blades are arranged in an equidistant ring array, with the scraper blades in active contact with the inner surface of the stirring cylinder.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By installing the filter device between the U-shaped tube and the circulation tube, the filter box can finely filter the ink during the ink circulation process, effectively removing impurities and particles. The filtered ink is purer, providing a high-quality ink source for subsequent printing work, which helps improve the clarity and quality of printed patterns and avoids printing defects caused by impurities in the ink. The filter device is stably connected by fixing protrusions and fixing holes. After long-term use, the fixing protrusions can be disassembled and replaced by applying external force to disengage them from the fixing holes. This facilitates the maintenance and upgrading of the filter device, ensuring the continuity and stability of the filtration effect, and thus continuously providing high-quality ink for printing work.

[0014] 2. By incorporating a rotating rod, stirring blades, and scraper, when ink needs to be discharged, the residual ink is re-input into the ink cartridge and stirring drum. The motor then drives the rotating rod and stirring blades to thoroughly stir the ink, preventing it from condensing. Simultaneously, the scraper, rotating with the stirring blades, scrapes off the ink adhering to the inner wall of the stirring drum, further enhancing the stirring effect and ink flowability. This ensures that the ink output by the device remains in a good liquid state, avoiding the impact of ink condensation on printing quality and solving the problem of condensed ink being discharged when existing devices are first used. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an ink stirring and circulation device for a gravure printing machine according to the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of the stirring cylinder of an ink stirring and circulation device for a gravure printing machine according to the present invention.

[0017] Figure 3 This is a schematic diagram of the overall structure of the filter device of the ink stirring and circulation device of a gravure printing machine according to the present invention;

[0018] Figure 4 This is a schematic diagram of the overall structure of the stirring mechanism of the ink stirring and circulation device of a gravure printing machine according to the present invention.

[0019] In the diagram: 1. Stirring drum; 2. Ink cartridge; 3. Ink filling port; 4. Circulation seat; 5. U-shaped tube; 6. Filter device; 61. Filter box; 62. Connecting pipe; 63. Second connector; 64. Annular sealing gasket; 65. Connecting block; 66. Spring; 67. Guide block; 68. Fixing protrusion; 7. Circulation pipe; 8. Stirring mechanism; 81. Motor; 82. Rotating rod; 83. Stirring blade; 84. Mounting plate; 85. Scraper; 9. First connector; 10. Sealing groove; 11. Connecting seat; 12. Fixing hole; 13. Solenoid valve; 14. First ink discharge pipe; 15. Micro pump; 16. Second ink discharge pipe; 17. Ink discharge seat. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] An ink stirring and circulation device for a gravure printing machine includes a stirring cylinder 1 and a circulation pipe 7. An ink cylinder 2 is located at the front end of the stirring cylinder 1, and an ink replenishment port 3 is located at the front end of the ink cylinder 2. A circulation seat 4 is located at the front upper part of the outer surface of the ink cylinder 2, and a U-shaped tube 5 is located at the rear end of the circulation seat 4. First connectors 9 are located at the rear right end of the U-shaped tube 5 and the left end of the circulation pipe 7. A stirring mechanism 8 is located at the rear end of the stirring cylinder 1. Sealing grooves 10 are provided on the facing surfaces of the two first connectors 9. Sealing grooves 10 are provided on the front and outer surfaces of the two first connectors 9. Each of the four connectors 11 has a connecting seat 11 at the rear. Each of the four connectors 11 has a fixing hole 12 inside. A filter device 6 is movably installed between the two first connectors 9. A first ink discharge pipe 14 is provided at the lower end of the circulation pipe 7. A solenoid valve 13 is provided at the front end of the first ink discharge pipe 14. A micro pump 15 is provided at the rear end of the first ink discharge pipe 14. A second ink discharge pipe 16 is provided at the rear end of the micro pump 15. An ink discharge seat 17 is provided at the lower rear of the outer surface of the stirring cylinder 1. The other end of the second ink discharge pipe 16 is fixedly connected to the ink discharge seat 17.

[0025] In this embodiment, the filter device 6 includes a filter box 61. Connecting pipes 62 are provided at both the left and right ends of the filter box 61. Second connectors 63 are fixedly installed at the ends of the two connecting pipes 62 furthest from the filter box 61. An annular sealing gasket 64 is provided at the ends of the two second connectors 63 furthest from the connecting pipes 62. Two connecting blocks 65 are provided at the ends of the two second connectors 63 furthest from the connecting pipes 62. Springs 66 are fixedly installed inside the four connecting blocks 65 via inner grooves. Guide blocks 67 are movably installed inside the four connecting blocks 65 via inner grooves. A fixing protrusion 68 is fixedly installed at one end away from the spring 66; the filter box 61 is movably engaged with the upper part of the outer surface of the ink cartridge 2 through the positioning block; the second connector 63 is positioned left and right corresponding to the first connector 9, and the filter box 61 is sealed and engaged with the two sealing grooves 10 respectively through the annular sealing gasket 64; the connecting block 65 is positioned corresponding to the connecting seat 11, and the connecting block 65 is movably engaged with the inside of the connecting seat 11; the fixing protrusion 68 is movably engaged with the inside of the fixing hole 12 through the spring 66 and the guide block 67; the U-shaped tube 5 is connected to the inside of the circulation tube 7 through the filter box 61.

[0026] Through the above scheme: when it is necessary to connect the filter device 6 to other components, the second connector 63 corresponds to the first connector 9 in the left and right positions. The filter box 61 is sealed and snapped together with the two sealing grooves 10 by the annular sealing gasket 64, which can ensure the sealing of the connection and prevent ink leakage. The connecting block 65 corresponds to the connecting seat 11 in the position. The connecting block 65 is movably snapped into the inside of the connecting seat 11. During the snapping process, the fixing protrusion 68 will be squeezed, the spring 66 will be compressed, and the guide block 67 will move in the inner groove of the connecting block 65. When the fixing protrusion 68 reaches the position of the fixing hole 12, the spring 66 restores its elastic deformation and pushes the guide block 67, so that the fixing protrusion 68 is movably snapped into the inside of the fixing hole 12, thereby realizing the stable connection of the filter device 6 to other components. Finally, the U-shaped tube 5 is connected to the inside of the circulation tube 7 through the filter box 61. The ink can be filtered through the filter box 61 and then circulate in the device.

[0027] In this embodiment, the stirring mechanism 8 includes a motor 81, and a rotating rod 82 is fixedly installed at the output end of the motor 81. Three sets of stirring blades 83 are provided on the outer surface of the rotating rod 82. Each of the three sets of stirring blades 83 is provided with a mounting plate 84 at one end near the inner wall of the stirring cylinder 1, and a scraper 85 is provided at one end of each mounting plate 84 away from the stirring blades 83. The front part of the stirring mechanism 8 penetrates the rear wall of the stirring cylinder 1 and extends into the interior of the stirring cylinder 1. The three sets of stirring blades 83 are arranged in an equally spaced ring array, and the scraper 85 is in active contact with the inner surface of the stirring cylinder 1.

[0028] With the above scheme: when the motor 81 is powered on and started, its output end drives the rotating rod 82 to rotate. Since the outer surface of the rotating rod 82 is provided with three sets of stirring blades 83 arranged in an equally spaced ring array, the rotation of the rotating rod 82 will cause the stirring blades 83 to stir the ink in the stirring cylinder 1, ensuring that the ink is mixed evenly and preventing the ink from condensing. At the same time, during the stirring process, the scraper 85 will scrape along the inner wall of the stirring cylinder 1 as the stirring blades 83 rotate, scraping off the ink adhering to the inner wall of the stirring cylinder 1, further ensuring the stirring effect and the fluidity of the ink.

[0029] It should be noted that this utility model is an ink stirring and circulation device for a gravure printing machine. During use, the filter device 6 is installed between the U-shaped tube 5 and the circulation tube 7. During installation, the second connector 63 corresponds to the first connector 9. The filter box 61 is sealed and engaged with the two sealing grooves 10 by the annular sealing gasket 64 to prevent ink leakage. The connecting block 65 corresponds to the connecting seat 11. When the connecting block 65 is engaged, the fixing protrusion 68 is squeezed, which compresses the spring 66. The guide block 67 moves in the groove of the connecting block 65. When the fixing protrusion 68 reaches the fixing hole 12, the spring 66 returns to its original shape and pushes the guide block 67, so that the fixing protrusion 68 is engaged in the fixing hole 12. Hole 12 ensures a secure connection. Finally, the U-shaped tube 5 connects to the inside of the circulation tube 7 via the filter box 61. During the entire operation of the device, the ink circulates within the U-shaped tube 5, filter box 61, and circulation tube 7. As the ink flows through the filter box 61, it undergoes fine filtration, effectively removing any impurities, particles, or other foreign matter. The filtered ink is purer, providing a high-quality ink source for subsequent printing. When the device needs to discharge ink, first close the solenoid valve 13, then open the micro pump 15. At this time, the first ink tube 14 and any residual ink within it will be reintroduced into the ink cartridge 2 and the stirring cylinder 1 for re-stirring. The stirring process is controlled by the controller to start the motor 81. After the motor 81 is powered on, its output end drives the rotating rod 82 to rotate, which in turn causes the stirring blades 83 to fully stir the ink in the stirring drum 1, ensuring uniform mixing and preventing coagulation. At the same time, the scraper 85 scrapes along the inner wall of the stirring drum 1 as the stirring blades 83 rotate, scraping off the ink adhering to the inner wall, further improving the stirring effect and the fluidity of the ink. Meanwhile, fresh liquid ink is transported from the ink outlet seat 17 at the bottom of the stirring drum 1 to the first ink outlet pipe 14. After being fully stirred and filtered, the ink can be discharged normally after the solenoid valve 13 is opened. When the device stops working... During operation, if there is residual ink in the first ink tube 14 and the micro pump 15, the solenoid valve 13 is closed and the micro pump 15 is turned on to return the residual ink to the ink cartridge 2 and the stirring cylinder 1, realizing the circulation of ink. This allows the stirring mechanism 8 in the stirring cylinder 1 to re-stir the ink. Combined with the continuous filtration of the ink by the filter device 6, the output ink is always liquid and pure, effectively solving the problem that the ink discharged by the existing device is in a condensed state when it is first used, which affects the printing quality. After long-term use, the two fixing protrusions 68 can be pressed by external force to disengage them from the two fixing holes 12, so that the filter box 61 can be disassembled and replaced.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ink agitator circulation device for a gravure printing machine comprising an agitator cylinder (1) and a circulation pipe (7), characterized in that: The front end of the stirring barrel (1) is provided with an ink cylinder (2), the front end of the ink cylinder (2) is provided with an ink supplementing opening (3), the front upper surface of the ink cylinder (2) is provided with a circulating seat (4), the rear end of the circulating seat (4) is provided with a U-shaped pipe (5), the right end of the rear end of the U-shaped pipe (5) and the left end of the circulating pipe (7) are both provided with a first connecting head (9), the rear end of the stirring barrel (1) is provided with a stirring mechanism (8), the opposite faces of the two first connecting heads (9) are both provided with a sealing groove (10), the front and rear outer surfaces of the two first connecting heads (9) are both provided with a connecting seat (11), the interiors of the four connecting seats (11) are all provided with a fixing hole (12), the filter device (6) is movably arranged between the two first connecting heads (9), the lower end of the circulating pipe (7) is provided with a first ink discharging pipe (14), the front end of the first ink discharging pipe (14) is provided with an electromagnetic valve (13), the rear end of the first ink discharging pipe (14) is provided with a micro pump (15), the rear end of the micro pump (15) is provided with a second ink discharging pipe (16), the lower rear surface of the stirring barrel (1) is provided with an ink discharging seat (17), the other end of the second ink discharging pipe (16) is fixedly connected with the ink discharging seat (17). The filter device (6) comprises a filter box (61), the left and right ends of the filter box (61) are both provided with a connecting pipe (62), the ends, away from the filter box (61), of the two connecting pipes (62) are both fixedly provided with a second connecting head (63), the ends, away from the connecting pipes (62), of the two second connecting heads (63) are both provided with an annular sealing gasket (64), the ends, away from the connecting pipes (62), of the two second connecting heads (63) are both provided with two connecting blocks (65), the interiors of the four connecting blocks (65) are all fixedly provided with a spring (66) through an inner groove, the interiors of the four connecting blocks (65) are all movably provided with a guide block (67) through an inner groove, and the ends, away from the springs (66), of the four guide blocks (67) are all fixedly provided with a fixed protruding block (68).

2. An ink agitator-circulator for a gravure printing press as claimed in claim 1, wherein: The filter box (61) is movably clamped on the upper surface of the ink cylinder (2) through the positioning block.

3. An ink agitator-circulator for a gravure printing press as claimed in claim 1, wherein: The positions of the second connecting heads (63) correspond to the positions of the first connecting heads (9) left and right, and the filter box (61) is clamped together with the two sealing grooves (10) through the annular sealing gaskets (64) respectively.

4. An ink agitator circulating device for a gravure printing machine according to claim 1, wherein: The positions of the connecting blocks (65) correspond to the positions of the connecting seats (11), the connecting blocks (65) are movably clamped in the interiors of the connecting seats (11), the fixed protruding blocks (68) are movably clamped in the interiors of the fixing holes (12) through the springs (66) and the guide blocks (67), and the U-shaped pipe (5) is connected with the interior of the circulating pipe (7) through the filter box (61).

5. An ink agitator circulating device for a gravure printing machine according to claim 1, wherein: The stirring mechanism (8) comprises a motor (81), the output end of the motor (81) is fixedly installed with a rotating rod (82), the outer surface of the rotating rod (82) is provided with three groups of stirring blades (83), one end of the three groups of stirring blades (83) close to the inner wall of the stirring barrel (1) is provided with a mounting plate (84), and the other end of the three mounting plates (84) away from the stirring blades (83) is provided with a scraping piece (85).

6. An ink agitator circulating device for a gravure printing machine according to claim 5, wherein: The front part of the stirring mechanism (8) penetrates through the rear barrel wall of the stirring barrel (1) and extends to the inside of the stirring barrel (1), the three groups of stirring blades (83) are arranged in equidistance annular array respectively, and the scraping piece (85) is in movable contact with the inner surface of the stirring barrel (1).

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