Environment-friendly printing ink diluting device

Abstract

The utility model discloses an environment-friendly printing ink diluting device which comprises a rack, an ink groove is fixedly connected to the interior of the rack, an ink feeding roller, a plate roller and a pressing roller are rotationally connected to the interior of the rack, an ink diluting barrel and a motor are fixedly connected to the interior of the rack, the outer wall of the ink diluting barrel is fixedly communicated with a short pipe, and the outer wall of the short pipe is fixedly communicated with the motor. One end of the short pipe is fixedly communicated with the outer wall of the printing ink groove, and the top of the printing ink diluting barrel is fixedly connected with an end cover. The piston type extrusion structure is adopted, ink is directly pushed from the ink diluting barrel to the ink groove, the design of a long pipeline is avoided, residues of the ink on parts such as an elbow and a valve are effectively reduced, and waste and cross contamination risks are reduced; the end cover is tightly matched with the printing ink diluting barrel to form a closed space, so that a diluting agent (especially an organic solvent) is prevented from being volatilized in the stirring process, VOCs emission is reduced, the environment-friendly requirement is met, and meanwhile raw material loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ink dilution technology, and in particular to an environmentally friendly printing ink dilution device. Background Technology

[0002] Ink flowability is an indispensable factor in the printing process. Ink with poor flowability is difficult to distribute evenly during printing, resulting in unclear printed patterns or blurry edges. Printing presses require thinners to ensure the smoothness of color printing because diluted ink has better flowability and can better adapt to the requirements of printing equipment. Thinners can reduce ink viscosity, prevent peeling, and improve ink workability.

[0003] In existing technologies, diluted ink is typically transported via external pipelines. These pipelines are complex and long, leading to the accumulation of high-viscosity ink at bends, valves, and other points. This long-term accumulation of residual ink not only results in waste but can also contaminate subsequent inks of different colors due to drying, affecting print quality. Most dilution equipment uses open mixing tanks or simple covered structures, allowing diluents (especially organic solvents) to easily evaporate into the air during mixing. This not only increases raw material loss but also causes VOC concentrations in the working environment to exceed standards. Therefore, we propose an environmentally friendly printing ink dilution device to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an environmentally friendly printing ink dilution device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An environmentally friendly printing ink dilution device includes a frame, an ink tank fixedly connected inside the frame, an inking roller, a printing roller, and a pressure roller rotatably connected inside the frame, an ink dilution tank and a motor fixedly connected inside the frame, a short pipe fixedly connected to the outer wall of the ink dilution tank, one end of the short pipe being fixedly connected to the outer wall of the ink tank, an end cap fixedly connected to the top of the ink dilution tank, an electric push rod fixedly connected to the top of the end cap, a metal plate fixedly connected to the bottom of the output end of the electric push rod, a circular piston fixedly connected to the bottom of the metal plate, and a dilution assembly inside the ink dilution tank.

[0007] Preferably, the dilution assembly includes a spline shaft, a spline sleeve is fixedly connected to the top of the motor output end, a spring is fixedly connected inside the spline sleeve, the top of the spring is fixedly connected to the bottom of the spline shaft, a movable rod is fixedly connected to the top of the spline shaft, and two stirring rods are fixedly connected to the outer wall of the movable rod, thereby diluting the ink by setting the dilution assembly.

[0008] Preferably, the bottom of the ink roller is located inside the ink tank, both stirring rods are located inside the ink dilution tank, and an electronic valve is fixedly installed on the outer wall of the short tube. The stirring rods are used to stir and mix the ink and diluent, thereby accelerating the dilution effect. The opening and closing of the short tube is controlled by the electronic valve.

[0009] Preferably, the top of the end cap is provided with a sliding hole, and the inner wall of the sliding hole is slidably connected to the outer wall of the output end of the electric push rod, so that the electric push rod and the circular piston are configured to form a feeding effect.

[0010] Preferably, the outer wall of the circular piston is slidably connected to the inner wall of the ink dilution tank.

[0011] Preferably, the inner wall of the frame and the bottom of the ink dilution tank are provided with through holes, and the inner wall of the through holes is rotatably connected to the outer wall of the spline shaft.

[0012] Preferably, a bearing is fixedly sleeved on the outer wall of the spline shaft, and the outer ring of the bearing is fixedly connected to the inner wall of the frame, so that the spline sleeve can rotate by means of the bearing.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution employs a piston-type extrusion structure, directly pushing ink from the ink dilution tank to the ink trough, avoiding long pipeline designs and effectively reducing ink residue at bends, valves, and other locations, thus lowering waste and the risk of cross-contamination. The end cap fits tightly with the ink dilution tank, forming a closed space to prevent the diluent (especially organic solvents) from evaporating during stirring, reducing VOC emissions and meeting environmental protection requirements, while also reducing raw material loss. The splined shaft and movable rod design allows the stirring rod to rotate continuously during ink discharge, ensuring uniform mixing without requiring machine downtime for switching, thereby improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of an environmentally friendly printing ink dilution device proposed in this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of an environmentally friendly printing ink dilution device proposed in this utility model;

[0018] Figure 3 This utility model proposes an environmentally friendly printing ink dilution device. Figure 2 A magnified structural diagram of part A in the diagram;

[0019] Figure 4 This is a partial three-dimensional structural diagram of an environmentally friendly printing ink dilution device proposed in this utility model.

[0020] In the diagram: 1. Frame; 2. Ink tank; 3. Inking roller; 4. Printing roller; 5. Pressure roller; 6. Ink dilution tank; 7. End cap; 8. Electric push rod; 9. Circular piston; 10. Motor; 11. Spline sleeve; 12. Spring; 13. Spline shaft; 14. Movable rod; 15. Stirring rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figures 1-4 As shown, an environmentally friendly printing ink dilution device is disclosed, comprising a frame 1, an ink tank 2 fixedly connected inside the frame 1, an inking roller 3, a printing roller 4 and a pressure roller 5 rotatably connected inside the frame 1 via existing roller bearings, the bottom of the inking roller 3 being located inside the ink tank 2, the inking roller 3, the printing roller 4 and the pressure roller 5 being on the same vertical horizontal plane, an ink dilution tank 6 and a motor 10 fixedly connected inside the frame 1, a short pipe fixedly communicating with the outer wall of the ink dilution tank 6, one end of the short pipe being fixedly communicating with the outer wall of the ink tank 2, and an electronic valve fixedly installed on the outer wall of the short pipe.

[0023] An end cap 7 is fixedly connected to the top of the ink dilution tank 6 by existing bolts. A rubber sealing ring is added to the contact surface between the end cap 7 and the ink dilution tank 6. An electric push rod 8 is fixedly connected to the top of the end cap 7. A sliding hole is opened on the top of the end cap 7. The inner wall of the sliding hole is slidably connected to the outer wall of the output end of the electric push rod 8. A metal plate is fixedly connected to the bottom of the output end of the electric push rod 8. A circular piston 9 is fixedly connected to the bottom of the metal plate. The outer wall of the circular piston 9 is slidably connected to the inner wall of the ink dilution tank 6. The operation of the electric push rod 8 drives the metal plate and the circular piston 9 to move up and down.

[0024] The ink dilution tank 6 is equipped with a dilution assembly, which includes a splined shaft 13. The inner wall of the frame 1 and the bottom of the ink dilution tank 6 are both provided with through holes. The inner wall of the through holes is rotatably connected to the outer wall of the splined shaft 13. A bearing is fixedly sleeved on the outer wall of the splined shaft 13. The outer ring of the bearing is fixedly connected to the inner wall of the frame 1. When the splined shaft 13 rotates, the bearing assists in stabilizing its rotation. An existing mechanical seal is added to the inner wall of the through holes.

[0025] A spline sleeve 11 is fixedly connected to the top of the output end of the motor 10. A spring 12 is fixedly connected inside the spline sleeve 11. The top of the spring 12 is fixedly connected to the bottom of the spline shaft 13. When the circular piston 9 moves upward, the spring 12 drives the spline shaft 13 and the movable rod 14 to move upward through the compression force. The top of the spline shaft 13 is fixedly connected to the movable rod 14. Two stirring rods 15 are fixedly connected to the outer wall of the movable rod 14. Both stirring rods 15 are located inside the ink dilution tank 6.

[0026] Working principle: In use, open end cap 7 and pour ink and thinner into ink dilution tank 6, then close end cap 7. Motor 10 drives spline sleeve 11 to rotate. The rotation of spline sleeve 11, through its internal keyway, drives spline shaft 13 to rotate synchronously. The rotation of spline shaft 13 drives movable rod 14 and two stirring rods 15 to rotate. The two stirring rods 15 stir and mix the ink and thinner, achieving the dilution effect. After dilution, electric push rod 8 drives metal plate and circular piston 9 downwards. Circular piston 9... The downward movement causes the ink inside the ink dilution tank 6 to flow into the ink tank 2 (electronic valve opens). When the bottom of the circular piston 9 presses against the top of the movable rod 14, the movable rod 14 is pressed downward. The downward movement of the movable rod 14 causes the spline shaft 13 to move downward along the keyway inside the spline sleeve 11, while the spring 12 is compressed. Without affecting continuous stirring and dilution, the ink is pushed into the ink tank 2. The ink flow path is short, reducing the amount of ink accumulating in the short tube. At the same time, the evaporation of the diluent is reduced by the sealing of the end cap 7.

[0027] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the electric push rod 8, the motor 10, and the electronic valve to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by technical personnel based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.

[0028] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly printing ink dilution device, comprising a frame (1), characterized in that, The machine frame (1) is fixedly connected to an ink tank (2). The machine frame (1) is rotatably connected to an ink roller (3), a printing roller (4), and a pressure roller (5). The machine frame (1) is fixedly connected to an ink dilution tank (6) and a motor (10). The outer wall of the ink dilution tank (6) is fixedly connected to a short pipe, one end of which is fixedly connected to the outer wall of the ink tank (2). The top of the ink dilution tank (6) is fixedly connected to an end cap (7). The top of the end cap (7) is fixedly connected to an electric push rod (8). The bottom of the output end of the electric push rod (8) is fixedly connected to a metal plate. The bottom of the metal plate is fixedly connected to a circular piston (9). The ink dilution tank (6) is equipped with a dilution assembly.

2. The environmentally friendly printing ink dilution device according to claim 1, characterized in that, The dilution assembly includes a spline shaft (13), a spline sleeve (11) is fixedly connected to the top of the output end of the motor (10), a spring (12) is fixedly connected inside the spline sleeve (11), the top of the spring (12) is fixedly connected to the bottom of the spline shaft (13), a movable rod (14) is fixedly connected to the top of the spline shaft (13), and two stirring rods (15) are fixedly connected to the outer wall of the movable rod (14).

3. The environmentally friendly printing ink dilution device according to claim 2, characterized in that, The bottom of the ink roller (3) is located inside the ink tank (2), and the two stirring rods (15) are located inside the ink dilution tank (6). An electronic valve is fixedly installed on the outer wall of the short tube.

4. The environmentally friendly printing ink dilution device according to claim 1, characterized in that, The top of the end cap (7) is provided with a sliding hole, and the inner wall of the sliding hole is slidably connected to the outer wall of the output end of the electric push rod (8).

5. The environmentally friendly printing ink dilution device according to claim 1, characterized in that, The outer wall of the circular piston (9) is slidably connected to the inner wall of the ink dilution tank (6).

6. The environmentally friendly printing ink dilution device according to claim 2, characterized in that, The inner wall of the frame (1) and the bottom of the ink dilution tank (6) are both provided with through holes, and the inner wall of the through holes is rotatably connected to the outer wall of the spline shaft (13).

7. The environmentally friendly printing ink dilution device according to claim 2, characterized in that, The outer wall of the spline shaft (13) is fixedly fitted with a bearing, and the outer ring of the bearing is fixedly connected to the inner wall of the frame (1).

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