Offset printing machine with ink adjustment

Abstract

The utility model provides a kind of offset press with ink adjustment, belong to offset press field, including offset press body, ink roll and ink barrel, the inside fixed mounting of offset press body is used for adjusting ink amount adjusting assembly, the inside rotatory mounting of ink barrel is used for mixing ink stirring assembly, the side fixed mounting of adjusting assembly is used for the ink outlet assembly for supplementary regulation ink amount;The utility model is equipped with adjusting assembly, so that ink amount regulation is more accurate and stable, can effectively guarantee the consistency of printed matter ink color in large quantities printing, reduces the quality fluctuation caused by human experience difference, significantly improves the quality and efficiency of printing, accurate ink regulation can not only reduce the waste of ink, also effectively reduce printing cost, while uniform mixing makes the viscosity and fluidity of ink stable, to enhance transferability and adhesion in printing process, ensure printing effect.

Description

Technical Field

[0001] This utility model relates to the field of offset printing machines, and more specifically, to an offset printing machine with ink adjustment. Background Technology

[0002] Offset printing press is a type of planographic printing press. During printing, the image is first printed from the printing plate onto the rubber roller, and then transferred from the rubber roller onto the paper. Offset printing presses are widely used in the printing and manufacturing of various paper products and packaging boxes.

[0003] A search revealed that Chinese patent CN216153324U discloses "An Offset Printing Machine," comprising: an offset printing machine body, a printing chamber within the machine body, and a printing cylinder rotatably mounted within the printing chamber. By utilizing upper and lower horizontal shafts to drive multiple agitator rods mounted on them, the ink can be effectively agitated, preventing sedimentation or stratification, ensuring uniform ink concentration, and improving printing quality. By controlling the intermittent up-and-down reciprocating motion of the sealing baffle, the intermittent quantitative ink discharge can be controlled, preventing excessive or insufficient ink discharge from affecting printing quality. This solves the problems of existing offset printing machines, which cannot control the intermittent quantitative ink discharge, where excessive or insufficient ink discharge affects printing quality, and lack ink agitation function, leading to stratification or sedimentation after prolonged standing, resulting in uneven ink concentration and reduced printing quality. However, it still has the following drawbacks: (1) The control method of intermittent up-and-down reciprocating motion of the sealing baffle may cause deviation in the output volume due to mechanical wear after long-term use, making it difficult to accurately control the output volume of ink each time.

[0004] (2) The stirring rod is rotated by only the upper and lower horizontal shafts. The stirring range and force may be insufficient, and the stirring effect on high viscosity inks is limited. There may be local precipitation or uneven concentration.

[0005] Therefore, an offset printing machine with ink adjustment is proposed. Utility Model Content

[0006] The purpose of this invention is to address the problem that the existing control method of intermittent up-and-down reciprocating motion of the sealing baffle may lead to deviations in the output volume due to mechanical wear after long-term use, making it difficult to accurately control the ink output volume each time. This invention provides an offset printing machine with ink adjustment to solve the above problems.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: The present invention is as follows: an offset printing machine with ink adjustment, comprising an offset printing machine body, an ink roller and an ink tank, wherein an adjustment component for adjusting the amount of ink is fixedly installed on the inner side of the offset printing machine body, a stirring component for mixing ink is rotatably installed inside the ink tank, and an ink dispensing component for assisting in adjusting the amount of ink is fixedly installed on one side of the adjustment component. The adjustment assembly includes a mounting plate bolted to the top of the offset printing machine. A first motor is fixedly connected to the bottom of the mounting plate. A screw is installed at the output end of the first motor. An ink collection box is slidably mounted on the screw via a slider. An ink fountain knife is provided on the ink collection box, and the other side of the ink fountain knife is in contact with the outer periphery of the ink roller.

[0008] As a preferred technical solution of this utility model, the stirring assembly includes a second motor fixedly connected to one side of the ink barrel, the output end of the second motor is fitted with a rotating shaft, the rotating shaft is located inside the ink barrel, and a stirring rod is provided on the outside of the rotating shaft, and a crossbar is fixedly connected to the other end of the stirring rod.

[0009] As a preferred technical solution of this utility model, the ink dispensing assembly includes a vertical plate bolted to one side of the mounting plate, a liquid pump fixedly installed on one side of the vertical plate, the inlet of the liquid pump being connected to one side of the ink tank through a pipe, the outlet of the liquid pump being threadedly connected to an ink dispensing pipe, and a flow control valve being provided on the ink dispensing pipe.

[0010] As a preferred technical solution of this utility model, the other end of the ink outlet tube is provided through one side of the ink collection box, and a limiting groove is provided on one side of the mounting plate and the screw is located in the limiting groove.

[0011] As a preferred technical solution of this utility model, the crossbars are distributed in three groups on the outside of the stirring rod, and the outer wall of each crossbar is in close contact with the inner wall of the ink barrel.

[0012] As a preferred technical solution of this utility model, a slag discharge port is provided through the bottom of the ink barrel, and a sealing cap is threaded to the other end of the slag discharge port.

[0013] As a preferred technical solution of this utility model, an ink filling tube is provided through the top of the mounting plate, and one end of the ink filling tube is connected to the inside of the ink tank. The ink tank is embedded in the inner side of the mounting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The adjustable components make ink volume adjustment more precise and stable, which can effectively ensure the consistency of ink color in mass printing, reduce quality fluctuations caused by differences in human experience, and significantly improve printing quality and efficiency. In addition, precise ink adjustment can not only reduce ink waste, but also effectively reduce printing costs. 2. The set stirring components continuously stir the ink to ensure that the pigments, resins and other components in the ink are evenly suspended, preventing uneven color and pipeline blockage caused by sedimentation. At the same time, it reduces the contact between the ink surface and air, avoiding skinning. Uniform mixing stabilizes the viscosity and fluidity of the ink, thereby improving the transfer and adhesion during the printing process and ensuring the printing effect. In addition, the design of the crossbar closely fitting the barrel wall eliminates the stirring dead corners, so that the ink in all areas of the barrel can be fully mixed, which greatly improves the stirring efficiency. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the offset printing machine with ink adjustment provided by this utility model; Figure 2 A schematic diagram of the adjustment component structure of the offset printing machine with ink adjustment provided by this utility model; Figure 3 A schematic diagram of the stirring assembly structure of the offset printing machine with ink adjustment provided by this utility model; Figure 4 A schematic diagram of the ink output assembly of an offset printing press with ink adjustment provided by this utility model; Figure 5 This is a partial structural diagram of the offset printing machine with ink adjustment provided by this utility model.

[0016] The diagram shows: 1. Offset printing machine body; 2. Ink roller; 3. Ink tank; 4. Adjustment assembly; 401. Mounting plate; 402. First motor; 403. Screw; 404. Ink collection box; 405. Ink fountain knife; 5. Stirring assembly; 501. Second motor; 502. Rotating shaft; 503. Stirring rod; 504. Crossbar; 6. Ink dispensing assembly; 601. Vertical plate; 602. Liquid pump; 603. Ink dispensing pipe; 604. Flow control valve; 7. Limiting groove; 8. Slag discharge port; 9. Sealing cover; 10. Ink filling pipe. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0018] Example: Figures 1-4 As shown, this embodiment proposes an offset printing machine with ink adjustment, including an offset printing machine body 1, an ink roller 2 and an ink tank 3. An adjustment component 4 for adjusting the amount of ink is fixedly installed on the inner side of the offset printing machine body 1. A stirring component 5 for mixing ink is rotatably installed inside the ink tank 3. An ink dispensing component 6 for assisting in adjusting the amount of ink is fixedly installed on one side of the adjustment component 4. The adjustment assembly 4 includes a mounting plate 401 bolted to the top of the offset printing machine. A first motor 402 is fixedly connected to the bottom of the mounting plate 401. A screw 403 is installed at the output end of the first motor 402. An ink collection box 404 is slidably mounted on the screw 403 via a slider. An ink fountain knife 405 is provided on the ink collection box 404, and the other side of the ink fountain knife 405 is in contact with the outer periphery of the ink roller 2. When the ink volume needs to be adjusted, the first motor 402 is started, which drives the screw 403 to rotate. The slider moves linearly through the internal thread that matches the screw 403. The movement of the slider causes the position of the ink collection box 404 to change, thereby precisely adjusting the relative position of the ink fountain blade 405 with respect to the ink roller 2 below. When the ink fountain blade 405 is close to the ink roller 2, the gap becomes smaller and the ink output decreases; conversely, when the ink fountain blade 405 is away from the ink roller 2, the gap becomes larger and the ink output increases accordingly. By adjusting the gap width between the ink fountain blade 405 and the ink roller 2, the ink layer thickness on the ink roller 2 can be effectively controlled.

[0019] like Figure 3 As shown, the stirring assembly 5 includes a second motor 501 fixedly connected to one side of the ink tank 3. A rotating shaft 502 is mounted on the output end of the second motor 501. The rotating shaft 502 is located inside the ink tank 3, and a stirring rod 503 is mounted on the outer side of the rotating shaft 502. A crossbar 504 is fixedly connected to the other end of the stirring rod 503. After the second motor 501 is started, its output end drives the rotating shaft 502 to rotate. During rotation, the rotating shaft 502 drives the outer stirring rod 503 to rotate synchronously, thereby effectively shearing and agitating the ink in the ink tank 3. Simultaneously, the rotation of the stirring rod 503 drives the crossbar 504 to rotate synchronously. The crossbar 504 effectively scrapes off the viscous ink adhering to the tank wall and reintroduces it into the main circulation system, greatly reducing ink residue and waste on the tank wall while ensuring that all ink is fully mixed, thus improving the mixing effect.

[0020] like Figure 3 and Figure 4 As shown, the ink dispensing assembly 6 includes a vertical plate 601 bolted to one side of the mounting plate 401. A liquid pump 602 is fixedly installed on one side of the vertical plate 601. The inlet of the liquid pump 602 is connected to one side of the ink tank 3 through a pipe. The outlet of the liquid pump 602 is threadedly connected to an ink dispensing pipe 603, and a flow control valve 604 is installed on the ink dispensing pipe 603. When the offset printing machine needs to perform printing operations, the liquid pump 602 is started. The liquid pump 602 draws ink from the ink tank 3 through the pipe. Then, the ink flows into the ink dispensing pipe 603 through the outlet of the liquid pump 602, and then into the collection box through the ink dispensing pipe 603. The flow control valve 604 is electrically connected to the controller on the offset printing machine. By flexibly adjusting the flow of the flow control valve 604, different printing needs can be met, effectively avoiding ink waste and reducing printing costs.

[0021] like Figure 2 , Figure 4 and Figure 5 As shown, the other end of the ink outlet tube 603 is inserted through one side of the ink collection box 404. A limiting groove 7 is formed on one side of the mounting plate 401, and the screw 403 is located in the limiting groove 7. The ink outlet tube 603 directly delivers ink to the ink collection box 404, completing the ink supply closed loop. The limiting groove 7 ensures the stability and straightness of the screw 403 during operation, guaranteeing the precision and smoothness of the adjustment movement.

[0022] like Figure 3 As shown, three sets of crossbars 504 are distributed on the outside of the stirring rod 503, and the outer wall of each crossbar 504 is in close contact with the inner wall of the ink container 3. When the crossbars 504 rotate, they can scrape off the viscous ink adhering to the container wall and carry it into the main circulation, which greatly reduces ink residue and waste on the container wall, while ensuring that all ink can participate in the mixing, thus improving the stirring effect and ink utilization rate.

[0023] like Figure 3 and Figure 5 As shown, a slag discharge port 8 is provided through the bottom of the ink tank 3, and a sealing cap 9 is threaded to the other end of the slag discharge port 8. When it is necessary to clean the ink tank or change to a different color ink, the residual ink and cleaning solution in the tank can be conveniently and thoroughly discharged by opening the sealing cap 9, which greatly saves time and manpower.

[0024] like Figures 1-5 As shown, an ink filling tube 10 is provided through the top of the mounting plate 401, and one end of the ink filling tube 10 communicates with the interior of the ink tank 3, which is embedded inside the mounting plate 401. The ink filling tube 10 provides a convenient ink filling channel without opening the entire device.

[0025] Working Principle: This utility model provides an offset printing machine with ink adjustment. The specific operating steps are as follows: Step 1: Add the required ink to the ink tank 3 through the ink filling tube 10 at the top of the mounting plate 401. Start the second motor 501, whose output end drives the rotating shaft 502 to rotate. During the rotation of the rotating shaft 502, the outer stirring rod 503 rotates synchronously, thereby effectively shearing and stirring the ink in the ink tank 3. At the same time, the stirring rod 503 rotates, driving the crossbar 504 to rotate synchronously. The crossbar 504 effectively scrapes off the viscous ink adhering to the tank wall and carries it back into the main circulation system; Step 2: When the offset printing machine needs to perform printing operations, start the liquid pump 602. The liquid pump 602 draws ink from the ink tank 3 through the pipeline. Then, the ink flows into the ink outlet pipe 603 through the outlet of the liquid pump 602, and then through the ink outlet pipe 60... 3. The ink enters the collection box. The flow control valve 604 is electrically connected to the controller on the offset printing machine. By flexibly adjusting the flow of the flow control valve 604, different printing needs can be met, effectively avoiding ink waste and reducing printing costs. Step 3: When it is necessary to adjust the amount of ink, the first motor 402 is started. This motor drives the screw 403 to rotate. The slider achieves linear movement through the internal thread that matches the screw 403. The movement of the slider causes the position of the ink collection box 404 to change, thereby precisely adjusting the relative position of the ink fountain knife 405 with respect to the ink roller 2 below. When the ink fountain knife 405 is close to the ink roller 2, the gap becomes smaller and the amount of ink output decreases. Conversely, when the ink fountain knife 405 is away from the ink roller 2, the gap increases and the amount of ink output increases accordingly. By adjusting the gap width between the ink fountain knife 405 and the ink roller 2, the thickness of the ink layer on the ink roller 2 can be effectively controlled.

[0026] All technical features in this embodiment can be freely combined according to actual needs.

[0027] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An offset printing machine with ink adjustment, comprising an offset printing machine body (1), an ink roller (2), and an ink tank (3), characterized in that, An adjustment component (4) for adjusting the amount of ink is fixedly installed on the inner side of the offset printing machine body (1), a stirring component (5) for mixing ink is rotatably installed inside the ink tank (3), and an ink dispensing component (6) for assisting in adjusting the amount of ink is fixedly installed on one side of the adjustment component (4). The adjustment assembly (4) includes a mounting plate (401) bolted to the top of the offset printing machine. A first motor (402) is fixedly connected to the bottom of the mounting plate (401). A screw (403) is installed at the output end of the first motor (402). An ink collection box (404) is slidably mounted on the screw (403) via a slider. An ink fountain knife (405) is provided on the ink collection box (404), and the other side of the ink fountain knife (405) is in contact with the outer periphery of the ink roller (2).

2. The offset printing machine with ink adjustment according to claim 1, characterized in that, The stirring assembly (5) includes a second motor (501) fixedly connected to one side of the ink tank (3). The output end of the second motor (501) is fitted with a rotating shaft (502). The rotating shaft (502) is located inside the ink tank (3), and a stirring rod (503) is provided on the outside of the rotating shaft (502). The other end of the stirring rod (503) is fixedly connected to a crossbar (504).

3. The offset printing machine with ink adjustment according to claim 1, characterized in that, The ink dispensing assembly (6) includes a vertical plate (601) bolted to one side of the mounting plate (401). A liquid pump (602) is fixedly installed on one side of the vertical plate (601). The inlet of the liquid pump (602) is connected to one side of the ink tank (3) through a pipe. The outlet of the liquid pump (602) is threadedly connected to an ink dispensing pipe (603). A flow control valve (604) is provided on the ink dispensing pipe (603).

4. The offset printing machine with ink adjustment according to claim 3, characterized in that, The other end of the ink outlet tube (603) is connected through one side of the ink collection box (404), and a limiting groove (7) is opened on one side of the mounting plate (401) and the screw (403) is located in the limiting groove (7).

5. An offset printing machine with ink adjustment according to claim 2, characterized in that, The crossbars (504) are distributed in three groups on the outside of the stirring rod (503), and the outer wall of each crossbar (504) is in close contact with the inner wall of the ink barrel (3).

6. An offset printing machine with ink adjustment according to claim 1, characterized in that, The bottom of the ink barrel (3) is provided with a slag discharge port (8), and the other end of the slag discharge port (8) is threaded with a sealing cap (9).

7. An offset printing machine with ink adjustment according to claim 1, characterized in that, The top of the mounting plate (401) is provided with an ink filling tube (10) and one end of the ink filling tube (10) is connected to the inside of the ink tank (3). The ink tank (3) is embedded in the inner side of the mounting plate (401).

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