Printing machine cleaning device

Abstract

The utility model relates to the technical field of printing machines, in particular to a printing machine cleaning device which comprises two supporting plates, a printing roller and an absorption roller arranged below the side of the printing roller are further rotationally connected between the two supporting plates, the absorption roller abuts against the roller face of the printing roller, and a lifting assembly and an ink supply groove are further arranged between the two supporting plates. The lifting assembly comprises an ink supply groove and a lifting assembly body. By means of the replaceable absorption roller and the replaceable ink supply roller, when the printing roller needs to be cleaned, the absorption roller and the ink supply groove are synchronously replaced, the ink cavity is filled with cleaning water, then the printing roller is cleaned, and the remaining cleaning water on the ink cavity and the roller face of the printing roller is absorbed by replacing the absorption roller with the large diameter. And the surface of the printing roller is ensured to be clean, the normal absorption roller is replaced again, other kinds of printing ink are introduced into the printing ink cavity, printing is conducted, then cleaning and replacement of the printing ink in the printing machine are completed, the cleaning time is shortened, and the cleaning water consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically to a printing press cleaning device. Background Technology

[0002] A printing press is a device that uses an ink fountain roller to transfer ink to a printing roller, and then uses the printing roller to transfer the ink to a carrier, thereby achieving the reproduction of text and patterns. During operation, the ink fountain roller and the printing roller contain the same type of ink. When it is necessary to replace the printing ink or the printing roller, the ink on the printing roller, ink fountain roller, and ink fountain must be emptied and cleaned. Since the printing roller is usually located in the center of the equipment, if it is cleaned without disassembling it, the cleaning water will drip onto the ground or into the ink fountain. Moreover, the internal space of the equipment is small, making it inconvenient for manual entry and cleaning. Therefore, it requires a long cleaning time, which affects output.

[0003] Therefore, a new technical solution is needed to address the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a printing press cleaning device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A printing press cleaning device includes two support plates, and a printing roller and an absorption roller disposed below the printing roller are rotatably connected between the two support plates. The absorption roller abuts against the roller surface of the printing roller. A lifting assembly and an ink supply trough are also provided between the two support plates. The upper surface of the ink supply trough has an inwardly recessed ink cavity. The absorption roller is detachably connected to the upper surface of the ink supply trough, and part of the roller surface of the absorption roller extends into the ink cavity. The lifting assembly drives the ink supply trough to move up and down and is detachably connected to it.

[0006] By adopting the above technical solution, the structure that uses the lifting component to drive the ink supply tank and the absorption roller to move up and down, and the structure that allows the ink supply tank and the support plate to be detachably connected, when ink needs to be transferred to the printing roller, the structure that allows the absorption roller to abut against the surface of the printing roller is used to transfer the ink in the ink chamber to the printing roller, thereby completing the normal printing operation. When the ink needs to be replaced, the ink supply tank and the absorption roller are removed from the equipment, and then an ink supply tank containing cleaning water in another ink chamber is installed. The contact between the absorption roller and the printing roller, as well as the cleaning water in the ink chamber, cleans the surface of the printing roller. After cleaning, an ink supply tank containing other types of ink is installed.

[0007] The present invention is further configured such that: the ink supply tank includes a first tank and a second tank, each having an ink cavity; the number of lifting components is several; and the two lifting components are detachably connected to the lower ends of the first tank and the second tank respectively; and adjacent first tanks and second tanks are slidably connected.

[0008] By adopting the above technical solution and utilizing the sliding connection structure between the first and second grooves, the pressure of the two absorption rollers on the printing roller surface can be adjusted, thereby controlling the ink application effect of the absorption rollers on the printing roller, and further increasing the ink application effect through two ink application processes.

[0009] The present invention is further configured such that: the lifting assembly includes a fixed plate fixedly connected to the support plate, a lifting screw is threadedly connected to the fixed plate, and a first connecting plate or a second connecting plate is rotatably connected to the upper end of the lifting screw, and the upper ends of the first connecting plate and the second connecting plate are detachably connected to the bottom wall of the ink supply tank.

[0010] By adopting the above technical solution, the upper ends of the first connecting plate and the second connecting plate are firstly separated from the bottom wall of the ink supply tank, and then the lifting assembly is used to drive the individual first or second slot to move up and down. After adjusting the corresponding height, the upper ends of the first connecting plate and the second connecting plate are then fixed to the bottom wall of the ink supply tank, thereby increasing its stability in a stable state. When the lifting screw stops rotating, the threaded connection structure can self-lock the first slot, that is, the gravity applied by the first slot to the lifting screw cannot drive the lifting screw to move downward, thereby increasing the height control effect of the ink supply tank.

[0011] The present invention is further configured such that: a lower shaft is fixedly connected to the end face of the absorption roller, extending through its axis; bearings are fixedly connected to both ends of the lower shaft; a recess for accommodating the bearing is also provided on the side of the first and second grooves where ink cavities are formed; a pressure plate is detachably connected to the recesses on the first and second grooves; and the bearing is located between the pressure plate and the first and second grooves.

[0012] By adopting the above technical solution, the bearing and the ink supply tank are detachably connected by bolts and a pressure plate. The bearing itself is used to make the lower shaft and the ink supply tank rotate. At the same time, the ink supply tank can drive the lower shaft and the absorption roller to move up and down.

[0013] The present invention is further configured such that the absorption roller is made of flexible sponge material.

[0014] By adopting the above technical solution, the flexible water-absorbing structure of the absorption roller enables it to absorb ink and then transfer it to the printing roller surface. At the same time, the elastic deformation structure of the absorption roller allows excess ink to be squeezed out when the absorption roller is squeezed, further increasing the amount of ink on the printing roller surface and improving the printing effect.

[0015] The present invention is further configured as follows: an adjusting block is slidably connected to the inner wall of an adjusting groove at the end of the support plate away from the ink supply groove; the adjusting block has an internal thread running vertically through it; an adjusting screw that meshes with the internal thread is rotatably connected to the adjusting groove; an adjusting pulley is rotatably connected to the end of the adjusting block away from the support plate; an upper shaft is fixedly connected to the axis of the printing roller; a first pulley is fixedly connected to the end of the upper shaft in the same direction as the absorption roller; several first pulleys are connected to the adjusting pulley via belts; and a sliding groove is provided on the support plate for the lower shaft to move up and down.

[0016] By adopting the above technical solution, the structure in which several first pulleys and adjusting pulleys are connected by belt power can make the printing roller and the absorption roller rotate in the same direction during cleaning, that is, the contact positions of the printing roller and the absorption roller move in opposite directions, thereby further increasing the cleaning effect of the absorption roller on the printing roller.

[0017] The present invention is further configured such that the diameter of the absorption roller is larger than the diameter of the inner wall of the ink cavity.

[0018] By adopting the above technical solution, when the remaining cleaning water in the printing roller and ink chamber needs to be cleaned after cleaning, the cleaning water in the ink chamber is absorbed by the absorption roller with a larger diameter, which facilitates the subsequent pouring of ink and printing, reduces the number of workers changing ink supply tanks, reduces labor intensity, and increases work efficiency.

[0019] In summary, this utility model has the following beneficial effects:

[0020] By using replaceable absorber rollers and ink supply rollers, when the printing roller needs cleaning, the absorber roller and ink supply tank are replaced simultaneously, and the ink chamber is filled with cleaning water to clean the printing roller. Then, by replacing with a larger diameter absorber roller, the remaining cleaning water in the ink chamber and on the surface of the printing roller is absorbed, ensuring that the surface of the printing roller is clean. Then, a normal absorber roller is replaced again, and other types of ink are introduced into the ink chamber for printing. This completes the cleaning and replacement of ink in the printing press, reducing the time spent on cleaning and replacement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the first groove in this utility model;

[0024] Figure 4 This is a schematic diagram of the adjustment groove in this utility model;

[0025] Figure 5This is a schematic diagram of the structure of the adjustment block in this utility model.

[0026] In the picture:

[0027] 11. Support plate; 12. Printing roller; 13. First groove; 14. Second groove; 15. Absorption roller; 16. First connecting plate; 17. Second connecting plate; 18. Lifting screw; 19. Fixing plate; 20. Pressing plate; 21. Bearing; 22. First pulley; 23. Lower shaft; 24. Belt; 25. Adjusting groove; 26. Adjusting screw; 27. Adjusting block; 28. Internal thread; 29. ​​Adjusting pulley; 30. Servo motor; 31. Ink chamber; 33. Lifting assembly; 34. Upper shaft. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings of the embodiments thereof. Example

[0029] This is a printing press cleaning device, such as Figures 1 to 5As shown, the system includes two support plates 11, with a printing roller 12 and an absorption roller 15 located below the printing roller 12 rotatably connected between them. The absorption roller 15 abuts against the roller surface of the printing roller 12. A lifting assembly 33 and an ink supply trough are also provided between the two support plates 11. The upper surface of the ink supply trough has an inwardly recessed ink cavity 31. The absorption roller 15 is detachably connected to the upper surface of the ink supply trough, and part of the roller surface of the absorption roller 15 extends into the ink cavity 31. The lifting assembly 33 drives the ink supply trough to move up and down and is detachably connected to it. Each ink supply trough includes an ink cavity. The first groove 13 and the second groove 14 of the 31 have several lifting components 33, and the two lifting components 33 are detachably connected to the lower ends of the first groove 13 and the second groove 14 respectively. Adjacent first grooves 13 and second grooves 14 are slidably connected. The lifting component 33 includes a fixed plate 19 fixedly connected to the support plate 11. A lifting screw 18 is threadedly connected to the fixed plate 19. A first connecting plate 16 or a second connecting plate 17 is rotatably connected to the upper end of the lifting screw 18. The upper ends of the first connecting plate 16 and the second connecting plate 17 are detachably connected to the bottom wall of the ink supply tank. The absorption roller 15 A lower shaft 23, extending along its axis, is fixedly connected to the end face. Bearings 21 are fixedly connected to both ends of the lower shaft 23. The side of the first groove 13 and the second groove 14 where the ink chamber 31 is located also has a recess to accommodate the bearing 21. A pressure plate 20 is detachably connected to the recess on the first groove 13 and the second groove 14. The bearing 21 is located between the pressure plate 20 and the first groove 13 and the second groove 14. The absorption roller 15 is made of flexible sponge material. An adjustment block 27 is slidably connected to the inner wall of the adjustment groove 25 at the end of the support plate 11 away from the ink supply groove. The block 27 has an internal thread 28 that runs vertically through it. An adjusting screw 26 that meshes with the internal thread 28 is rotatably connected to the adjusting groove 25. An adjusting pulley 29 is rotatably connected to the end of the adjusting block 27 away from the support plate 11. An upper shaft 34 is fixedly connected to the axis of the printing roller 12. A first pulley 22 is fixedly connected to one end of the upper shaft 34 and the absorption roller 15 in the same direction. Several first pulleys 22 are poweredly connected to the adjusting pulley 29 through a belt 24. A sliding groove is provided on the support plate 11 for the lower shaft 23 to move up and down. The diameter of the absorption roller 15 is larger than the inner wall diameter of the ink cavity 31.

[0030] During printing, the lifting assembly 33 is adjusted to change the position of the first slot 13 and the second slot 14. First, the upper ends of the first connecting plate 16 and the second connecting plate 17 are disconnected from the bottom wall of the ink supply tank. Then, the lifting screw 18 is rotated. Utilizing the threaded connection between the lifting screw 18 and the fixing plate 19, and the fixed connection between the fixing plate 19 and the support plate 11, the lifting screw 18 moves up and down when rotated. The upper end of the lifting screw 18 is rotatably connected to either the first connecting plate 16 or the second connecting plate 17. During movement, the lifting screw 18 drives the first connecting plate 16 or the second connecting plate 17 to move synchronously. The first connecting plate 16 or the second connecting plate 17 is detachably connected to the ink supply tank by screws. At this time, the first connecting plate 16 and the second connecting plate 17 abut against the ink supply tank, thereby driving the ink supply tank to move upward. When the first connecting plate 16 and the second connecting plate 17 move downward, the ink supply tank moves downward under its own gravity. The groove provided on the ink supply tank is used for the bearing 21 to engage, and the connection is further achieved through the clamping plate 20 and screws. The groove opening is blocked, meaning the clamping plate 20 fixes the outer ring of the bearing 21 to the ink supply trough. The inner ring of the bearing 21 is fixedly connected to the lower shaft 23, which in turn is fixedly connected to the absorption roller 15. This allows the absorption roller 15 to rotate while the ink supply trough moves up and down. When the ink supply trough reaches the upper position, the absorption roller 15 abuts against the surface of the printing roller 12. At this time, ink is stored in the ink cavity 31. Part of the absorption roller 15 extends into the ink cavity 31, and the surface of the absorption roller 15 also abuts against the surface of the printing roller 12. The structure transfers the ink in the ink chamber 31 to the surface of the printing roller 12. At the same time, the structure of the first groove 13 and the second groove 14, which can slide at different heights, is used to move the first groove 13 or the second groove 14 through different lifting components 33. This causes a difference in the contact pressure between the absorption roller 15 on the first groove 13 and the second groove 14 and the surface of the printing roller 12, thereby making each absorption roller 15 perform different ink brushing effects on the surface of the printing roller 12. The use of two different absorption rollers 15 further enhances the ink brushing effect on the printing roller 12.

[0031] When it is necessary to change to a different type of ink and print, first rotate the lifting screw 18 in the reverse direction, which will drive the ink supply tank downward, thereby causing the absorption roller 15 to move downward away from the printing roller 12. Loosen the screws at the positions of the first connecting plate 16 and the second connecting plate 17, thus completing the disassembly of the lifting screw 18 from the ink supply tank. At this time, the ink supply tank continues to apply pressure to several first connecting plates 16 and second connecting plates 17 under the influence of gravity, using the first connecting plates 16 and second connecting plates 17 to support the ink supply tank. Then manually remove the ink supply tank and place the clean ink supply tank on the first connecting plates 16 and second connecting plates 17. Tighten the screws to complete the connection between the clean ink supply tank and the lifting screw 18. Then, introduce cleaning water into the ink chamber 31 of the clean ink supply tank. The cleaning water is then submerged above the lowest point of the clean absorber roller 15. The lifting screw 18 is then rotated, moving the ink supply trough upwards and bringing the absorber roller 15 into contact with the printing roller 12. The servo motor 30 is then activated, driving the upper shaft 34 to rotate, which in turn rotates the printing roller 12. When the printing roller 12 contacts the absorber roller 15 and rotates, and the contact pressure between the absorber roller 15 and the printing roller 12 is less than the contact pressure during printing, the cleaning water is transferred to the printing roller 12. This cleaning water dissolves the ink on the printing roller 12 surface, completing the initial cleaning. The belt 24 is then fitted onto the first pulley 22 and the adjusting pulley 29, and the adjusting screw 26 is rotated. 6 engages with the internal thread 28 on the adjusting block 27, causing the adjusting block 27 to move up and down. The adjusting block 27 then drives the adjusting pulley 29 to move, thereby controlling the circumference of the closed connection line between several first pulleys 22 and adjusting pulley 29, i.e., adjusting the tension of the belt 24, so that the first pulleys 22 and adjusting pulleys 29 are poweredly connected. When the printing roller 12 rotates, the belt 24 drives the remaining first pulleys 22 and adjusting pulleys 29 to rotate in the same direction, i.e., their rotation directions are the same, thereby causing the contact surfaces of the printing roller 12 and the absorption roller 15 to move in opposite directions, i.e., the printing roller 12 and the absorption roller 15 move relative to each other. The absorption roller 15 is used to wash the roller surface of the printing roller 12, further increasing the cleaning effect. Then, the screws at the position of the clamping plate 20 are loosened, thereby allowing the bearing to... Remove bearing 21 and absorber roller 15 from the ink supply tank, drain the cleaning water from ink chamber 31, and then place absorber roller 15, which has a diameter larger than that of ink chamber 31, into the recess on the ink supply tank. Tighten the screws and fix the outer ring of bearing 21 to the ink supply tank through clamping plate 20. At this time, when printing roller 12 drives absorber roller 15 to rotate, the dry absorber roller 15 absorbs the cleaning water on the inner wall of ink chamber 31 and the surface of printing roller 12. Then remove absorber roller 15 from ink supply tank and replace it with absorber roller 15 of appropriate diameter. Then introduce ink into ink chamber 31 and adjust the height of first groove 13 and second groove 14. At this time, belt 24 can be removed or belt 24 can be kept stationary to complete the cleaning of printing roller 12 and the replacement of different types of ink.

[0032] The first connecting plate 16 and the second connecting plate 17 are adapted to the shape of the bottom wall of the first groove 13, thereby increasing the effect of the lifting screw 18 driving the first groove 13 to move.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A printing press cleaning device, comprising two support plates (11), wherein a printing roller (12) and an absorption roller (15) disposed below the side of the printing roller (12) are rotatably connected between the two support plates (11), the absorption roller (15) abutting against the roller surface of the printing roller (12), characterized in that: A lifting assembly and an ink supply trough are also provided between the two support plates (11). The upper surface of the ink supply trough has an inwardly recessed ink cavity (31). The absorption roller (15) is detachably connected to the upper surface of the ink supply trough, and part of the roller surface of the absorption roller (15) extends into the ink cavity (31). The lifting assembly (33) drives the ink supply trough to move up and down and is detachably connected to it.

2. The printing press cleaning device according to claim 1, characterized in that: The ink supply tank includes a first tank (13) and a second tank (14) each having an ink cavity (31). There are several lifting components (33), and the two lifting components (33) are detachably connected to the lower ends of the first tank (13) and the second tank (14), respectively. The adjacent first tank (13) and second tank (14) are slidably connected.

3. The printing press cleaning device according to claim 2, characterized in that: The lifting assembly (33) includes a fixed plate (19) fixedly connected to the support plate (11), and a lifting screw (18) is threadedly connected to the fixed plate (19). The upper end of the lifting screw (18) is rotatably connected to a first connecting plate (16) or a second connecting plate (17). The upper ends of the first connecting plate (16) and the second connecting plate (17) are detachably connected to the bottom wall of the ink supply tank.

4. A printing press cleaning device according to claim 3, characterized in that: The absorber roller (15) is fixedly connected to a lower shaft (23) that runs through it along its axis. The two ends of the lower shaft (23) are fixedly connected to bearings (21). The first groove (13) and the second groove (14) have ink cavities (31) on one side, and recesses are provided to accommodate the bearings (21). The recesses on the first groove (13) and the second groove (14) are detachably connected to a pressure plate (20). The bearings (21) are located between the pressure plate (20) and the first groove (13) and the second groove (14).

5. A printing press cleaning device according to claim 4, characterized in that: The absorption roller (15) is made of flexible sponge material.

6. A printing press cleaning device according to claim 5, characterized in that: The support plate (11) is fixedly connected to an adjustment groove (25) at one end away from the ink supply trough. An adjustment block (27) is slidably connected to the inner wall of the adjustment groove (25). An internal thread (28) is provided on the adjustment block (27) that runs through the upper and lower parts. An adjustment screw (26) that meshes with the internal thread (28) is rotatably connected to the adjustment groove (25). An adjustment pulley (29) is rotatably connected to one end of the adjustment block (27) away from the support plate (11). An upper shaft (34) is fixedly connected to the axis of the printing roller (12). A first pulley (22) is fixedly connected to one end of the upper shaft (34) and the absorption roller (15) in the same direction. Several first pulleys (22) and adjustment pulleys (29) are poweredly connected by a belt (24). A sliding groove is provided on the support plate (11) for the lower shaft (23) to move up and down.

7. A printing press cleaning device according to claim 6, characterized in that: The diameter of the absorption roller (15) is larger than the inner wall diameter of the ink cavity (31).

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